阅读说明：本技术 具有水净化功能的排水头，水净化滤芯和水龙头装置 (Drainage head with water purification function, water purification filter core and faucet device ) 是由 高城寿雄 白武史考 于 2018-01-10 设计创作，主要内容包括：[目的]提供一种水净化滤芯,该水净化滤芯阻止关于排水的错误识别。[解决方案]排水头8包括：切换机构,其能够在原水排出与净化水排出之间切换从排出口带来的排水；调节构件RG1,其能够在第一状态J1和第二状态J2之间相互转换,在第一状态J1下阻止从原水排出切换到净化水排出,并且在第二状态J2下允许从原水排出切换到净化水排出；水净化滤芯PC1,其包括使调节构件RG1从第一状态J1转换到第二状态J2的解除调节部分DR1。当未附接水净化滤芯PC1时,调节构件RG1处于第一状态J1。当附接水净化滤芯PC1时,调节构件RG1处于第二状态J2。([ Objective ] to provide a water purification cartridge which prevents erroneous recognition regarding drainage. [ solution ] A drain head 8 includes: a switching mechanism capable of switching the water discharge from the discharge port between the raw water discharge and the purified water discharge; a regulation member RG1 that is mutually switchable between a first state J1 and a second state J2, that prevents switching from raw water discharge to purified water discharge in the first state J1, and that allows switching from raw water discharge to purified water discharge in the second state J2; water purification cartridge PC1, which comprises a de-regulation portion DR1 which switches regulation member RG1 from a first state J1 to a second state J2. When water purification cartridge PC1 is not attached, regulation member RG1 is in first state J1. When water purification cartridge PC1 is attached, regulating member RG1 is in second state J2.)

1. A discharge head having a water purification function, characterized by comprising:

an outlet port;

a switching mechanism capable of switching the water discharge from the discharge port between raw water discharge and purified water discharge;

an adjustment member that is mutually switchable between a first state that prevents the switching mechanism from switching from the raw water discharge to the purified water discharge and a second state that allows the switching mechanism to switch from the raw water discharge to the purified water discharge;

a water purification cartridge including a release adjustment portion that transitions the adjustment member from the first state to the second state; and

a water purification cartridge receiving part, wherein

When the water purification cartridge is not attached to the cartridge receiving portion, the adjustment member is in the first state, and

the release adjustment portion places the adjustment member in the second state when the water purification cartridge is attached to the cartridge receiving portion.

2. The underdrain head of claim 1, wherein

The adjustment member includes a switching adjustment portion that is located at a first position in the first state and at a second position in the second state,

when located at the first position, the switching regulation portion abuts on an interlock abutment portion that moves in conjunction with movement of the switching mechanism and that moves in conjunction with movement of the switching mechanism in a process of switching from the raw water discharge to the purified water discharge by the switching mechanism, and

when located at the second position, the switching regulation portion does not abut on the interlock abutment portion in the process of switching from the raw water discharge to the purified water discharge.

3. The drain head according to claim 1 or 2, wherein the adjustment member is shifted from the first state to the second state by the release adjustment portion abutting on the adjustment member.

4. A drain head according to any of claims 1-3, wherein,

the adjustment member is rotatably fixed, and

the mutual transition between the first state and the second state is achieved by rotating the adjustment member.

5. A faucet assembly, characterized in that it comprises a discharge head according to any one of claims 1 to 4.

6. A water purification cartridge, characterized in that it is attachable to a water discharge head having a water purification function,

the drainage head includes:

an outlet port;

a switching mechanism capable of switching the water discharge from the discharge port between raw water discharge and purified water discharge;

an adjustment member that is mutually switchable between a first state that prevents the switching mechanism from switching from the raw water discharge to the purified water discharge and a second state that allows the switching mechanism to switch from the raw water discharge to the purified water discharge; and

a water purification cartridge receiving part, and

the water purification cartridge comprises:

a water purification function part; and

an adjustment releasing portion that switches the adjustment member from the first state to the second state.

7. The water purification cartridge of claim 6, wherein the release adjustment portion abuts the adjustment member to transition the adjustment member from the first state to the second state.

8. The water purification cartridge according to claim 6 or 7, wherein the release regulating portion is a downstream-side end face of the water purification cartridge.

9. Water purification cartridge according to any one of claims 6 to 8, wherein,

the water purification cartridge further includes a connection terminal portion forming a downstream side end portion of the water purification cartridge,

the water purification cartridge receiving part includes an insertion part into which the connection terminal part is inserted,

the connection terminal portion includes a gap-forming portion that forms a gap between the connection terminal portion and the insertion portion, and

the gap forming portion has an end surface which is the release regulating portion.

10. The water purification cartridge of claim 9, wherein

The connection terminal portion further includes: an O-ring provided on an upstream side of the release regulation portion; and a wall portion provided between the release regulation portion and the O-ring, and

the release adjustment portion includes a radially outermost portion that is located inward in the radial direction with respect to a radially outermost portion of the wall portion.

Technical Field

The present invention relates to a water discharge head having a water purification function, a water purification cartridge (cartridge) and a faucet device.

Background

A drain head is known which includes a water purification cartridge and has a water purification function. JP3454756B2 discloses a shower head having a water purification function and capable of switching between a raw water flow path not passing through a water purification cartridge and a purified water flow path passing through the water purification cartridge.

Reference list

Patent document

Patent document 1: JP3454756B2

Disclosure of Invention

Problems to be solved by the invention

This type of drain head or a faucet device equipped with the same includes a manipulation portion that can switch between raw water discharge and purified water discharge. Examples of the manipulation portion include a button, a lever, and a dial. Some faucet devices may further include a display portion showing whether the raw water discharge or the purified water discharge is selected.

The user can recognize whether the raw water discharge or the purified water discharge is selected by the manipulation, display, and the like thereof. The water purification cartridge may not be inserted into the faucet due to memory errors, etc. Even in this case, the user may erroneously recognize that the water purification cartridge has been inserted and continue to use the faucet. That is, although the raw water is actually discharged, the user may erroneously think that the purified water is discharged.

An object of the present invention is to provide a drain head and a water purification cartridge capable of preventing erroneous recognition about drain.

Solution to the problem

The preferred water discharge head with water purification function comprises: a water outlet; a switching mechanism capable of switching the water discharge from the discharge port between the raw water discharge and the purified water discharge; a regulation member that is mutually switchable between a first state that prevents the switching mechanism from switching from raw water discharge to purified water discharge and a second state that allows the switching mechanism to switch from raw water discharge to purified water discharge; a water purification cartridge including a release regulating portion that switches the regulating member from a first state to a second state; a water purification cartridge receiving section. When the water purification cartridge is not attached to the cartridge receiving portion, the adjustment member is in the first state. When the water purification cartridge is attached to the cartridge receiving portion, the adjustment portion is released to place the adjustment member in the second state.

Preferably, the adjustment member includes a switching adjustment portion that is located at the first position in the first state and at the second position in the second state. Preferably, in the process of switching from the raw water discharge to the purified water discharge by the switching mechanism, the switching regulation portion located at the first position abuts on an interlock abutment portion that moves in conjunction with the movement of the switching mechanism. Preferably, the switching regulation portion located at the second position does not abut on the interlock abutment portion in a process of switching from the raw water discharge to the purified water discharge by the switching mechanism.

Preferably, the adjustment member is shifted from the first state to the second state by the release adjustment portion abutting on the adjustment member.

Preferably, the adjustment member is rotatably fixed. Preferably, the mutual transition between the first state and the second state is achieved by rotating the adjustment member.

The preferred faucet assembly includes a drain head.

A preferred water purification cartridge is attachable to a water discharge head having a water purification function, the water discharge head comprising: an outlet port; a switching mechanism capable of switching the water discharge from the discharge port between the raw water discharge and the purified water discharge; a regulation member that is mutually switchable between a first state that prevents the switching mechanism from switching from raw water discharge to purified water discharge and a second state that allows the switching mechanism to switch from raw water discharge to purified water discharge; a water purification cartridge receiving section. Preferably, the water purification cartridge includes a water purification function portion and a release regulation portion for switching the regulation member from the first state to the second state.

Preferably, the release regulating portion switches the regulating member from the first state to the second state by abutting on the regulating member.

Preferably, the relief portion is a downstream side end face of the water purification cartridge.

Preferably, the water purification cartridge includes a connection terminal portion forming a downstream side end portion of the water purification cartridge. Preferably, the water purification cartridge receiving part includes an insertion part into which the connection terminal part is inserted. Preferably, the connection terminal portion includes a gap forming portion that forms a gap between the connection terminal portion and the insertion portion. Preferably, the gap forming portion has an end surface which is a release regulating portion.

Preferably, the connection terminal portion further includes: an O-ring provided on an upstream side of the release regulation portion; a wall portion disposed between the release adjustment portion and the O-ring. Preferably, the release regulating portion includes a radially outermost portion that is located inward in the radial direction with respect to a radially outermost portion of the wall portion.

Advantageous effects of the invention

Erroneous recognition about drainage is prevented.

Drawings

Fig. 1 is a perspective view of a faucet device according to a first embodiment.

Fig. 2 is a front view of a drain head in the faucet assembly of fig. 1.

Fig. 3(a) is a cross-sectional view taken along line a-a in fig. 2, and fig. 3(B) is a cross-sectional view taken along line B-B in fig. 2. Fig. 3(a) and 3(b) are cross-sectional views illustrating a raw water discharge state.

Fig. 4(a) is a cross-sectional view taken along line a-a in fig. 3(a), and fig. 4(B) is a cross-sectional view taken along line B-B in fig. 3 (a).

Fig. 5(a) is a cross-sectional view corresponding to fig. 3(a), and shows a purified water discharge state. Fig. 5(b) is a cross-sectional view corresponding to fig. 3(b), and shows a purified water discharge state.

Fig. 6(a) is a cross-sectional view corresponding to fig. 4(a), and shows a purified water discharge state. Fig. 6(b) is a cross-sectional view corresponding to fig. 4(b), and shows a purified water discharge state.

Fig. 7 is an exploded perspective view of the faucet assembly of fig. 1.

Fig. 8(a) is an enlarged cross-sectional view illustrating a raw water discharge state of the water discharge head according to the first embodiment, and fig. 8(b) is an enlarged cross-sectional view illustrating a switching prevention state. Fig. 8(a) and 8(b) are cross-sectional views showing a state where the water purification cartridge is not attached.

Fig. 9(a) is an enlarged cross-sectional view showing a raw water discharge state of the water discharge head according to the first embodiment, and fig. 9(b) is an enlarged cross-sectional view showing a switching prevention state. Fig. 9(a) and 9(b) are cross-sectional views showing a state where the water purification cartridge is not attached.

Fig. 10(a) is an enlarged cross-sectional view of a portion of fig. 3 (b). Fig. 10(b) is an enlarged cross-sectional view of a portion of fig. 5 (b).

Fig. 11(a) and 11(b) are cross-sectional views showing a state immediately before the water purification cartridge is attached in place. The cross section of fig. 11(a) is taken at the same position as fig. 3 (a). The cross section of fig. 11(b) is taken at the same position as fig. 3 (b).

Fig. 12(a) is a perspective view of an adjustment member according to the first embodiment, fig. 12(b) is a plan view of the adjustment member, and fig. 12(c) is a side view of the adjustment member.

Fig. 13(a) is a perspective view of a ball retainer according to the first embodiment, fig. 13(b) is a plan view of the ball retainer, and fig. 13(c) is a side view of the ball retainer.

Fig. 14(a) is a perspective view of a water purification cartridge according to first to fourth embodiments, fig. 14(b) is a side view of the water purification cartridge, and fig. 14(c) is a plan view of the water purification cartridge.

Fig. 15 is a perspective view of a faucet device according to a second embodiment.

Fig. 16 is a front view of a drain head in the faucet assembly of fig. 15.

Fig. 17 is a cross-sectional view taken along line a-a in fig. 16.

Fig. 18 is a cross-sectional view taken along line a-a in fig. 17.

Fig. 19 is a cross-sectional view corresponding to fig. 17, and shows a purified water discharge state.

Fig. 20 is a cross-sectional view taken along line a-a in fig. 19.

Fig. 21 is an exploded perspective view of the faucet assembly of fig. 15.

Fig. 22(a) is an enlarged cross-sectional view showing a raw water discharge state of a drain head according to the second embodiment, fig. 22(b) is an enlarged cross-sectional view showing a switching prevention state of the drain head, and fig. 22(a) and 22(b) are cross-sectional views showing a state where a water purification cartridge is not attached.

Fig. 23(a) is an enlarged cross-sectional view showing a raw water discharge state of a drain head according to the second embodiment, fig. 23(b) is an enlarged cross-sectional view showing a switching prevention state of the drain head, and fig. 23(a) and 23(b) are cross-sectional views showing a state where a water purification cartridge is not attached.

Fig. 24(a) is an enlarged cross-sectional view of a part of fig. 17, and fig. 24(b) is an enlarged cross-sectional view of a part of fig. 19.

Fig. 25(a) is a perspective view of an adjustment member according to the second embodiment, fig. 25(b) is a plan view of the adjustment member, and fig. 25(c) is a side view of the adjustment member.

Fig. 26 is a perspective view of a faucet device according to a third embodiment.

Fig. 27(a) is a front view of a drain head according to the third embodiment in a raw water discharge state; fig. 27(b) is a front view of the water discharge head disposed at the switching prevention position, and fig. 27(c) is a front view of the water discharge head in a purified water discharge state.

Fig. 28 is a cross-sectional view of the drain head according to the third embodiment in a raw water discharge state.

Fig. 29 is a cross-sectional view of the drain head according to the third embodiment in a purified water discharge state.

Fig. 30(a) is an enlarged cross-sectional view of a drain head according to a third embodiment in a raw water discharge state; fig. 30(b) is an enlarged cross-sectional view of the drain head in the switch-preventing state. Fig. 30(a) and 30(b) are cross-sectional views showing a state where the water purification cartridge is not attached.

Fig. 31 is a perspective view of a faucet device according to a fourth embodiment.

Fig. 32(a) is a side view of the drain head according to the fourth embodiment in a raw water discharge state, and fig. 32(b) is a side view of the drain head in a purified water discharge state. Fig. 32(a) and 32(b) show a state in which the cover of the head is removed.

Fig. 33 is a cross-sectional view of a water discharge head according to a fourth embodiment, showing a raw water discharge state.

Fig. 34 is a cross-sectional view of the water discharge head according to the fourth embodiment, showing a purified water discharge state.

Fig. 35(a) is an enlarged cross-sectional view of the drain head according to the fourth embodiment in a raw water discharge state, and fig. 35(b) is an enlarged cross-sectional view of the drain head in a switching prevention state. Fig. 35(a) and 35(b) are cross-sectional views showing a state where the water purification cartridge is not attached.

Fig. 36 is a side view of the adjustment member according to the first embodiment, showing the first state and the second state of the adjustment member.

Fig. 37 is an enlarged cross-sectional view of the drainage head according to the first embodiment.

Fig. 38 is the same enlarged cross-sectional view as fig. 37.

Detailed Description

The present invention will be described in detail based on preferred embodiments with reference to the accompanying drawings as appropriate.

Unless otherwise specified, the radial direction in the present disclosure refers to the radial direction of water purification cartridge PC1 attached in place. The axial direction in this disclosure refers to the axial direction of water purification cartridge PC1 attached in place, unless otherwise noted.

Unless otherwise specified, the upstream side in the present disclosure refers to the upstream side of the water flow, and the downstream side in the present disclosure refers to the downstream side of the water flow.

[ first embodiment ]

Fig. 1 is a perspective view of a faucet device 2 according to a first embodiment. The faucet assembly 2 is mounted on a kitchen sink (not shown in the figures). A visually unrecognizable portion, i.e., a portion located inside the kitchen sink, is omitted in fig. 1. The faucet device 2 can be installed in, for example, a bathroom or a toilet, in addition to a kitchen.

The faucet assembly 2 includes a body portion 4, a lever handle 6 and a discharge head 8. The faucet device 2 is a so-called single-lever type faucet. The temperature of the discharged water can be adjusted by the left-right pivoting movement of the lever handle 6. The amount of discharged water can be adjusted by the up-and-down pivoting movement of the lever handle 6. A valve mechanism capable of adjusting the temperature and amount of discharged water is housed inside the body portion 4. Such valve mechanisms are known.

Although not shown in the drawings, the faucet apparatus including the faucet device 2 includes a hot water inlet pipe and a water inlet pipe. The hot water inlet pipe is connected to a pipe extending from the water heater, for example. The water inlet pipe is connected to a water supply pipe that does not pass through the water heater, for example.

Hot water is introduced into the hot water inlet pipe. Heated by a water heater. Non-heated water is introduced into the water inlet pipe. The valve mechanism adjusts the mixing ratio between the hot water and the water. The temperature of the discharged water can be adjusted by the mixing ratio. Hereinafter, hot water, non-hot water, and a mixture of hot water and non-hot water are also simply referred to as "water".

The water discharge head 8 includes a water inlet portion 10, a switching portion 12, a manipulation portion 14, a water shape adjusting portion 16, a display portion 20 and a discharge port 22. In the present embodiment, the manipulation portion 14 is a button. The water inlet portion 10 also serves as a gripping portion.

The water shape adjusting portion 16 can change the shape of the discharged water (water shape). The water shape adjusting part 16 includes a water shape adjusting lever 18. The water shape can be changed by manipulating the water shape adjusting lever 18. The water shape adjustment lever 18 may be manipulated by selecting one of a shower water shape, a straight water shape, or an intermediate water shape therebetween.

The drain head 8 includes a raw water flow path and a purified water flow path. When the raw water flow path is selected, raw water is discharged from the discharge port 22. Such a state of discharging raw water is also referred to as a raw water discharge state. When the purified water flow path is selected, the purified water is discharged from the discharge port 22. This state of discharging purified water is also referred to as a purified water discharge state.

The switching portion 12 includes a switching mechanism capable of switching between purified water discharge and raw water discharge by manipulating the manipulation portion 14. The switching mechanism will be described later in detail.

Fig. 2 is a front view of the drain head 8. Fig. 3(a) is a cross-sectional view taken along line a-a in fig. 2. Fig. 3(B) is a cross-sectional view taken along line B-B in fig. 2. Fig. 4(a) is a cross-sectional view taken along line a-a in fig. 3 (a). Fig. 4(B) is a cross-sectional view taken along line B-B in fig. 3 (a).

The manipulation portion 14 functions as a switch button. The manipulation portion 14 is pressed to switch between the flow paths. Each time the manipulation part 14 is pressed, switching is performed between the raw water flow path and the purified water flow path. In other words, each time the manipulation portion 14 is pressed, switching is performed between the raw water discharge state and the purified water discharge state. As described later, the switching mechanism includes a thrust lock mechanism operated by an alternate action. This push lock enables the operating portion 14 to function as a push button. Each depression of the push button 14 effects a reciprocal transformation between the protruding position and the depressed position of the push button 14.

The position where the manipulation section 14 is located when discharging the raw water is also referred to as a raw water discharge position. In the present embodiment, the raw water discharge position is a protruding position. The position where the handling portion 14 is located when purified water is discharged is also referred to as a purified water discharge position. In the present embodiment, the purified water discharge position is a pressed-down position.

In the present disclosure, the direction in which the button 14 is pressed is also referred to as a front-rear direction. Pressing moves the button 14 backwards. The protruding position is located on the front side with respect to the pressed-down position. Once the push button 14 is pressed to the maximum depressed position, the mutual switching between the projected position and the depressed position is effected. The maximum depression position is located on the rear side with respect to the depression position. When the button 14 located at the protruding position is pressed, the button 14 stops at the depressed position once the button 14 is moved to the maximum depressed position. The switching operation position is set at or immediately before the maximum depression position. When the button 14 reaches the switching operation position, switching is performed, and then the button 14 is shifted to the depressed position. The button 14 is kept in the depressed position even after the depression of the release button 14. When the button 14 located at the depressed position is pressed, the button 14 stops at the protruding position after the button 14 is once moved to the maximum depressed position (switching operation position). The push button 14 is held in the protruding position even after the pressing of the release button 14.

Fig. 1, 2, 3(a), 3(b), 4(a) and 4(b) show the push button 14 in the protruding position. In the drain head 8, when the push button 14 is located at the protruding position, the raw water flow path is selected. In the drain head 8, when the push button 14 is located at the protruding position, the raw water is discharged. Alternatively, when the button 14 is located at the protruding position, the purified water may be discharged.

Fig. 5(a) and 5(b) are cross-sectional views of the drain head 8 when the button 14 is in the depressed position. The cross section of fig. 5(a) is taken at the same position as fig. 3 (a). The cross section of fig. 5(b) is taken at the same position as fig. 3 (b). Fig. 6(a) is a cross-sectional view taken along line a-a in fig. 5 (a). Fig. 6(B) is a cross-sectional view taken along line B-B in fig. 5 (a).

Fig. 5(a), 5(b), 6(a) and 6(b) show the button 14 in a depressed position. In the drain head 8, when the button 14 is in the depressed position, the purified water flow path is selected. In the drain head 8, when the push button 14 is located at the depressed position, purified water is discharged. Alternatively, when the button 14 is located at the protruding position, the raw water may be discharged.

Fig. 7 is an exploded perspective view of the drain head 8.

As shown in fig. 7, the water discharge head 8 includes a water purification cartridge PC 1. A water purification cartridge PC1 is disposed inside the outer cylindrical portion 24. The above-mentioned water inlet portion (grip portion) 10 includes an outer cylindrical portion 24 and a water purification cartridge PC 1.

A raw water flow path WG is formed outside the water purification cartridge PC1 (refer to, for example, the cross-sectional view of fig. 3 (a)). A purified water flow path WJ (refer to, for example, the cross-sectional view of fig. 3 (a)) is formed in the water purification cartridge PC 1. In the raw water discharge state, the raw water flows through the raw water flow path WG, then passes through the raw water flow path WG within the switching mechanism, and then is discharged from the discharge port 22. On the other hand, in the purified water discharge state, in the process of raw water flowing into the water purification cartridge PC1 from the outside of the water purification cartridge PC1, the raw water is filtered by the permeable portion 26 inside the water purification cartridge PC1 to become purified water. The purified water flows through the purified water flow path WJ in the water purification cartridge PC1 and the purified water flow path WJ in the switching mechanism, and is then discharged from the discharge port 22. The permeable part 26 is an example of a water purification function part.

The water discharge head 8 includes a head body 28, an upper head cover 30, and a lower head cover 32.

The switching portion 12 of the drainage head 8 includes a thrust lock mechanism 34. The thrust lock mechanism 34 is housed in the head body 28. The thrust lock mechanism 34 includes a first switch member 36, a second switch member 38, a switch ring 40, a switch shaft 42, a coil spring 44, a switch cover 46, and an O-ring 48. The switching shaft 42 includes push rods 50 and 51, and a button holder 52. The switch cover 46 includes a rear base portion 56 and a slit 58. The switching ring 40 is fixed to the front side of the switching cover 46. The switching shaft 42 moves in the front-rear direction under the guidance of the slit 58. The second switch 38 moves together with the switch shaft 42. The second switch 38 and the switch shaft 42 move in the front-rear direction (forward-backward movement) in conjunction with the pressing of the manipulation portion 14. The coil spring 44 biases the switching cover 46 and the switching shaft 42 toward the respective directions so that the switching cover 46 and the switching shaft 42 are away from each other. The first switch member 36 is rotated by pressing the button each time, thereby enabling the button to be held in two different positions.

The thrust lock mechanism 34 effects an alternating action. The above JP3454756B2 also employs a thrust lock mechanism similar to the present embodiment. Conventionally, as a so-called thrust lock mechanism operated by an alternate action, a heart cam mechanism, a rotary cam mechanism, and a ratchet cam mechanism are known. All of these mechanisms are well known. For example, one of these mechanisms may be used as the thrust lock mechanism 34.

The discharge head 8 includes a water shape changing assembly 70. The water shape changing assembly 70 includes the above-described water shape adjusting part 16, the water shape adjusting lever 18, and the discharge port 22. The water shape changing assembly 70 further includes a valve seat forming portion 80.

The switching mechanism of the water discharge head 8 includes the above-described operating portion 14, the first valve Vl and the second valve V2. The drainage state is switched by opening or closing both valves.

The first valve V1 includes a valve seat 101a, a first valve body 101b, a ball retainer 101c and an elastic body 101 d. The first valve V1 is a ball valve. The first valve body 101b is a ball. The valve seat 101a is an opening edge of a circular hole. The valve seat 101a is formed on the valve seat forming portion 80. The ball 101b is held by the ball holder 101 c. The ball retainer 101c is open downward. The elastic body 101d is disposed between the upper portion of the ball holder 101c and the ball 101 b. The elastic body 101d is a coil spring. The elastic body 101d always biases the ball 101b toward the valve seat 101a side.

The second valve V2 includes a valve seat 102a, a second valve body 102b, a ball retainer 102c and an elastomeric body 102 d. The second valve V2 is a ball valve. The second valve body 102b is a ball. The valve seat 102a is an opening edge of a circular hole. The valve seat 102a is formed on the valve seat forming portion 80. The ball 102b is held by a ball holder 102 c. The ball retainer 102c is open downward. The elastic body 102d is disposed between the upper portion of the ball retainer 102c and the ball 102 b. The elastic body 102d is a coil spring. The elastic body 102d always biases the ball 102b toward the valve seat 102a side.

The push rod 50 of the switching shaft 42 has an end portion connected to the ball holder 101 c. The push rod 51 of the switching shaft 42 has an end portion connected to the ball retainer 102 c. The ball holder 101c and the ball holder 102c move in the front-rear direction together with the switching shaft 42. The ball 101b moves in the front-rear direction together with the ball holder 101 c. The ball 102b moves in the front-rear direction together with the ball holder 102 c. The switching shaft 42 moves in the front-rear direction together with the manipulation portion 14.

The valve seat 101a and the valve seat 102a are arranged side by side in a direction substantially perpendicular to the front-rear direction. However, the front-rear direction positions of these valve seats 101a, 102a are (slightly) different from each other. The valve seat 101a is located on the rear side with respect to the valve seat 102 a.

When the operating portion 14 is located at the projecting position, the ball 102b is fitted in the valve seat 102a to close the second valve V2. In this case, the center of the ball 101b is located outside the center of the valve seat 101a, and thus the first valve V1 is opened. In this state, the raw water is discharged. The second valve V2 is a valve for closing the flow path of the purified water.

When the operating portion 14 is located at the depressed position, the ball 101b is fitted in the valve seat 101a to close the first valve V1. In this case, the center of the ball 102b is located outside the center of the valve seat 102a, and thus the second valve V2 is opened. In this state, purified water is discharged. The first valve V1 is a valve for closing the raw water flow path.

The discharge head 8 comprises an adjustment member RG 1. When the water purification cartridge PC1 is not attached, the regulation member RG1 prevents switching to the purified water discharge state.

The discharge head 8 includes a biasing member 104. The biasing member 104 biases the regulator member RG1 such that the regulator member RG1 is in a first state J1 (described below). In the present embodiment, the biasing member 104 is a torsion spring (torsion coil spring). Thus, the adjusting member RG1 is biased to be in the first state J1.

The ball retainer 102c includes an interlock abutment LC 1. The interlocking abutting portion LC1 is a rod-like portion whose rear end is a free end. The interlocking abutting portion LC1 moves in conjunction with the movement of the operating portion 14. The interlocking abutting portion LC1 moves in the front-rear direction according to the manipulation of the manipulation portion 14. When the interlocking abutting portion LC1 is prevented from moving, the manipulation portion 14 cannot move. When the interlocking abutting portion LC1 is prevented from moving, the operating portion 14 cannot be operated.

In fig. 3(a), 3(b), 4(a) and 4(b), the manipulation portion 14 is located at the protruding position. When the manipulation part 14 is located at the protruding position, the water discharge head 8 is in the raw water discharge state. In fig. 5(a), 5(b), 6(a) and 6(b), the manipulation portion 14 is located at the depressed position. When the handle portion 14 is in the depressed position, the water discharge head 8 is in a purified water discharge state. In all these figures, a water purification cartridge PC1 is attached to (a suitable location of) the discharge head 8. A water purification cartridge PC1 is attached to the cartridge receiving portion. In the drain head 8, the cartridge receiving portion is a portion extending from the interior of the outer cylindrical portion 24 to the interior of the head body 28. By attaching the water purification cartridge PC1 to (a suitable location of) the cartridge receiving portion, the water purification cartridge PC1 is able to perform its function (produce purified water).

Fig. 8(a), fig. 8(b), fig. 9(a) and fig. 9(b) are cross-sectional views in which water purification cartridge PC1 is not attached to the cartridge receiving portion. The cross-sections of fig. 8(a) and 8(b) are taken at the same positions as fig. 3 (b). The cross-sections of fig. 9(a) and 9(b) are taken at the same positions as fig. 4 (b).

In fig. 8(a) and 9(a), the manipulation portion 14 is located at the protruding position. In fig. 8(b) and 9(b), the manipulation portion 14 is located at the switch preventing position. The switching prevention position refers to a position that prevents the manipulation of the manipulation portion 14 to the purified water discharge state.

Fig. 10(a) is an enlarged cross-sectional view of a portion of fig. 3 (b). Fig. 10(b) is an enlarged cross-sectional view of a portion of fig. 5 (b).

For convenience of explanation, in the present disclosure, a state in which the water purification cartridge PC1 is not attached to the cartridge receiving portion is also referred to as an unattached state. In addition, the state in which the water purification cartridge PC1 is attached to the cartridge receiving portion is also referred to as an attached state. Fig. 8(a), 8(b), 9(a) and 9(b) are cross-sectional views showing an unattached state. Fig. 10(a) and 10(b) are cross-sectional views showing the attached state.

The state of the adjusting member RG1 in the attached state is different from the state of the adjusting member RG1 in the unattached state. In the unattached state as shown in fig. 8(a), 8(b), 9(a) and 9(b), the adjusting member RG1 is in the first state J1. In the attached state as shown in fig. 10(a) and 10(b), the adjusting member RG1 is in the second state J2.

In the present embodiment, the difference between the states of the regulation member RG1 is caused by the difference in the posture of the regulation member RG 1. The biasing member 104 biases the adjusting member RG1 such that the adjusting member RG1 is in the first posture. Therefore, in the unattached state, the regulation member RG1 is in the first posture (see fig. 8(a) and 8 (b)). In the attached state, the regulation member RG1 is in the second posture (see fig. 10(a) and 10 (b)). The difference in posture is achieved by rotation. Water purification cartridge PC1 is attached to the cartridge receiving portion such that the downstream side end face of water purification cartridge PC1 abuts against adjustment member RG1, thereby rotating adjustment member RG 1. This rotation changes the state of the regulation member RG1 from the first state J1 (first posture) to the second state J2 (second posture). The behavior of the regulating member RG1 will be described in detail later.

As described above, the biasing member 104 biases the regulating member RG1 toward the first state J1 side. Therefore, when water purification cartridge PC1 is inserted while resisting the biasing force of biasing member 104 to set regulation member RG1 to second state J2, biasing member 104 presses water purification cartridge PC1 in the separation direction. The separation direction is a direction from the connection terminal portion 140 toward the rear formation portion 142 (see fig. 14 (b)). Thus, separation of water purification cartridge PC1 is facilitated. Although adhesion may occur between water purification cartridge PC1 and O-ring 162 attached thereto, which may cause difficulty in separation of water purification cartridge PC1, biasing member 104 helps to address such difficulty. Therefore, regulation member RG1 has an effect of promoting separation of water purification cartridge PC1 (separation promoting effect).

As shown in fig. 10(a) and 10(b), when water purification cartridge PC1 is attached to set regulation member RG1 to second state J2, interlock abutment portion LC1 does not contact regulation member RG1 regardless of the position of manipulation portion 14. When the regulation member RG1 is set to the second state J2, the regulation member RG1 does not prevent the switch from the raw water discharge to the purified water discharge. When the regulation member RG1 is in the second state J2, transition from the raw water discharge state (fig. 10(a)) to the purified water discharge state (fig. 10(b)) is achieved.

Meanwhile, when water purification cartridge PC1 is not attached and regulation member RG1 is in first state J1, interlock abutment portion LC1 abuts on regulation member RG1 during the process of switching from raw water discharge to purified water discharge (see fig. 8(b) and 9 (b)). When the manipulation portion 14 located at the protruding position is pressed, the interlock abutment portion LC1 abuts on the regulation member RG1 before the manipulation portion 14 reaches the pressed-down position. This abutment prevents the operating portion 14 from being pressed further deeply. When the regulation member RG1 is in the first state J1, the regulation member RG1 prevents switching from raw water discharge to purified water discharge. When the regulation member RG1 is in the first state J1, the transition from the raw water discharge state (fig. 10(a)) to the purified water discharge state (fig. 10(b)) is prevented. When the regulation member RG1 is in the first state J1, the manipulation portion 14 is prevented from moving from the raw water discharge position to the purified water discharge position.

In order to activate the above-described thrust lock mechanism to switch the drainage state, the operating portion 14 needs to be pressed deeply beyond the depression position. In other words, an "overtravel" is required to switch the drainage state. The position of the manipulation portion 14 when pressed as deeply as possible is also referred to as a maximum depression position. The distance between the projecting position and the depressed position in the steering direction is represented by Xmm, and the distance of the over-stroke in the steering direction is represented by Y mm. The Y mm is the distance between the depressed position and the maximum depressed position. Therefore, the maximum movable distance of the manipulation section 14 is (X + Y) mm. In this example, X is 4mm and Y is 2 mm. Note that the manipulation direction refers to a moving direction of the manipulation portion 14.

The switch preventing position may be located between the protruding position and the depressed position. That is, the switching prevention position may be located within a range of Xmm. Alternatively, the switch-inhibiting position may be located within the range of over-travel. That is, the switch inhibiting position may be located between the depressed position and the maximum depressed position. In other words, the switching prevention position may be located within a range of Y mm. However, the manipulation portion 14 needs to be prevented from moving before switching by the thrust lock mechanism. That is, the operating portion 14 needs to prevent switching before reaching the above-described switching operation position. From the viewpoint of the certainty of preventing switching, the switching prevention position is preferably located between the protruding position and the depressed position.

Fig. 11(a) and 11(b) are cross-sectional views showing a state immediately before the water purification cartridge PC1 is attached in place. The cross section of fig. 11(a) is taken at the same position as fig. 3 (a). The cross section of fig. 11(b) is taken at the same position as fig. 3 (b).

As described above, in the unattached state, the regulation member RG1 is set to the first state J1. In fig. 11(a) and 11(b), the regulating member RG1 is also in the first state J1. During the process of attaching water purification cartridge PC1, the downstream side end face EF1 of water purification cartridge PC1 abuts on regulation member RG 1. Fig. 11(a) and 11(b) show a state in which the end face EF1 is almost in contact with the regulation member RG 1. From this state, the water purification cartridge PC1 is inserted further toward the downstream side (see solid arrows in fig. 11(a) and 11 (b)). This insertion causes end face EF1 to press and rotate adjustment member RG 1. This rotation changes the state of the regulation member RG1 from the first state J1 (fig. 11(a) and 11(b)) to the second state J2 (fig. 10(a) and 10 (b)).

Fig. 12(a) is a perspective view of the adjustment member RGl. Fig. 12(b) is a plan view of the regulation member RG 1. Fig. 12(c) is a side view of the regulation member RG 1.

The adjusting member RG1 includes a shaft portion 110, a release adjustment abutting portion 112, and a switch adjusting portion 114. The regulation member RG1 also includes the first state maintaining portion 116. The shaft portion 110 is a rotational axis of the adjustment member RG 1.

The first state maintaining portion 116 abuts on the adjacent portion by the biasing force of the biasing member 104, thereby maintaining the regulating member RG1 in the first state J1. The adjacent portion refers to a member adjacent to the regulation member RG 1. That is, all such members may be adjacent portions.

The release-adjustment abutment portion 112 is located on one side of the shaft portion 110, and the switching adjustment portion 114 is located on the other side of the shaft portion 110. In the first state J1 (see fig. 11(a) and 11(b)), the deregulating abutment portion 112 is located on the upstream side (rear side) of the shaft portion 110, and the switching regulating portion 114 is located on the downstream side (front side) of the shaft portion 110.

As the release-regulation abutment portion 112, a first release-regulation abutment portion 112a and a second release-regulation abutment portion 112b are provided. The first release adjusting abutment portion 112a is an end of the protruding portion 118 that protrudes from the first position of the shaft portion 110. The second release adjusting abutment portion 112b is an end portion of the protruding portion 120 that protrudes from the second position of the shaft portion 110.

The adjustment member RG1 includes a U-shaped portion 122 that extends from one location of the shaft portion 110 to another location of the shaft portion 110. The switching adjustment portion 114 is provided on the U-shaped portion 122. The first state maintaining portion 116 is an end surface of a projection 124 projecting from the U-shaped portion 122.

Fig. 13(a) is a perspective view of the ball retainer 102 c. The ball retainer 102c includes the ball receiving portion 130 and the aforementioned interlocking abutment LC 1. The ball receiving portion 130 is a cylindrical portion that opens downward. The ball 102b is accommodated in the ball accommodation portion 130. The interlocking abutting portion LC1 is a rod-like portion protruding from the ball receiving portion 130. The interlock abutment portion LC1 extends in the front-rear direction. Interlock abutment LC1 has end face 132. The end face 132 is a rear end face of the interlock abutment portion LC 1.

As shown in fig. 8(b), in the unattached state, (the end surface 132 of) the interlock abutment portion LC1 abuts on (the switch regulation portion 114 of) the regulation member RG1 in the first state J1 during the process of moving the manipulation section 14 from the raw water discharge position to the purified water discharge position. This abutment prevents further rearward movement of the interlock abutment LC 1. This abutment prevents the operating portion 14 from being pressed further deeply. Therefore, the handling portion 14 cannot be disposed at the purified water discharge position.

Meanwhile, as shown in fig. 10(b), in the attached state, (the end surface 132 of) the interlock abutment portion LC1 does not abut on (the switch regulation portion 114 of) the regulation member RG1 in the second state J2 during the process of moving the manipulation section 14 from the raw water discharge position to the purified water discharge position. Therefore, the interlock abutting portion LC1 can be moved further rearward to reach the purified water discharge position.

Fig. 14(a) is a perspective view of the water purification cartridge PC 1. Fig. 14(b) is a side view of water purification cartridge PC 1. Fig. 14(c) is a front view of water purification cartridge PC 1. Fig. 14(c) shows the water purification cartridge PC1 as viewed from the downstream side.

The water purification cartridge PC1 includes the above-described permeable part 26, a connection terminal part 140 provided at a front end part of the permeable part 26, and a rear formation part 142 provided at a rear end part of the permeable part 26. The connection terminal portion 140 is made of resin. The entirety of the connection terminal portion 140 is integrally formed as a one-piece member. The connection terminal portions 140 are formed of resin in one piece. The connection terminal portion 140 is coaxial with the permeable portion 26. The posterior forming section 142 is coaxial with the permeable section 26. Note that, as described above, the permeable portion 26 is one example of a water purification function portion (a portion that performs a water purification function). Water purification cartridge PC1 need not include permeable portion 26.

The connection terminal portion 140 is disposed on the downstream side of the permeable portion 26. The inside of the connection terminal portion 140 is an empty space. This empty space serves as a purified water flow path WJ. That is, the connection terminal portion 140 includes the purified water flow path WJ inside the connection terminal portion 140. The end portion of the connection terminal portion 140 is an end portion EF1 on the downstream side of the water purification cartridge PC 1.

The permeable section 26 has a cylindrical shape. The permeable section 26 includes an empty space therein. This empty space serves as a purified water flow path WJ. For example, the permeable section 26 may include an outer filter layer and an inner filter layer. Water purification material may be disposed between the outer and inner filtration layers. For example, the main component of the water purification material is activated carbon. For example, nonwoven fabrics are used for the outer and inner filter layers. The outer and/or inner filter layers may be made of an antimicrobial ceramic. The outer filter layer and/or the inner filter layer may employ an ion exchanger. The outer filter layer may be composed of multiple layers. The inner filter layer may be composed of multiple layers.

The rear forming portion 142 closes the rear side of the permeable portion 26. Meanwhile, the connection terminal 140 is permeable to water. The internal empty space of the connection terminal part 140 is the purified water flow path WJ. The purified water generated by passing through the permeable portion 26 passes through the connection terminal portion 140 and then reaches the switching portion 12.

The connection terminal portion 140 includes a first cylindrical portion 150. The connection terminal portion 140 further includes a second cylindrical portion 152. The connection terminal part 140 further includes a third cylindrical part 154. The second cylindrical portion 152 is located on the downstream side of the third cylindrical portion 154. The first cylindrical portion 150 is located on the downstream side of the second cylindrical portion 152. The second cylindrical portion 152 is located between the first cylindrical portion 150 and the third cylindrical portion 154. The first cylindrical portion 150 is coaxial with the second cylindrical portion 152. The second cylindrical portion 152 is coaxial with the third cylindrical portion 154. The central axis of the first cylindrical portion 150 coincides with the central axis of the water purification cartridge PC 1. The central axis of the second cylindrical portion 152 coincides with the central axis of the water purification cartridge PC 1. The central axis of the third cylindrical portion 154 coincides with the central axis of the water purification cartridge PC 1.

The connection terminal portion 140 includes a maximum outer diameter portion. In the present embodiment, the largest outer diameter portion of the connection terminal portion 140 is the third cylindrical portion 154. The maximum outer diameter portion (third cylindrical portion 154) covers a downstream side end portion of the permeable portion 26.

The third cylindrical portion 154 has an outer diameter greater than the outer diameter of the second cylindrical portion 152. A stepped surface 156 is formed between the third cylindrical portion 154 and the second cylindrical portion 152. The step surface 156 extends in the radial direction of the water purification cartridge PC 1. The outer diameter of the second cylindrical portion 152 is greater than the outer diameter of the first cylindrical portion 150. A stepped surface 158 is formed between the second cylindrical portion 152 and the first cylindrical portion 150. The stepped surface 158 extends in the radial direction of the water purification cartridge PC 1.

The first cylindrical portion 150 includes a flange 160 and an O-ring 162. An O-ring 162 is attached to the outer surface of the first cylindrical portion 150. The flange 160 extends in the radial direction of the water purification cartridge PC 1. The flange 160 is located on the downstream side of the O-ring 162. The flange 160 supports an O-ring 162 from the downstream side.

As mentioned above, the water purification cartridge PC1 comprises an end face EF1 on the downstream side. End face EF1 is the end face of first cylindrical portion 150. End face EF1 abuts on protruding portions 118 and 120 of adjustment member RG1, thereby rotating adjustment member RG 1. The axis of rotation of this rotation is the shaft portion 110. This rotation causes the state of the regulating member RG1 to transition from the first state J1 to the second state J2.

[ second embodiment ]

Fig. 15 is a perspective view of a faucet assembly 200 according to a second embodiment. The faucet assembly 200 is mounted to a kitchen sink (not shown). A visually unrecognizable portion, that is, a portion located inside the kitchen sink is omitted in fig. 15. The faucet assembly 200 may be installed to, for example, a bathroom or a toilet, in addition to a kitchen.

The faucet assembly 200 includes a body portion 204, a lever handle 206, and a drain head 208. The faucet assembly 200 is a so-called single-lever type faucet. The temperature of the discharged water can be adjusted by the left and right pivoting movement of the lever handle 206. The amount of water discharged can be adjusted by the upward and downward pivoting movement of the lever handle 206. A valve mechanism capable of adjusting the temperature and amount of discharged water is housed inside the body portion 204. Such valve mechanisms are known. Although not shown in the drawings, the faucet apparatus including the faucet device 200 includes a hot water inlet pipe and a water inlet pipe.

The discharge head 208 includes a water inlet portion 210, a switching portion 212, a manipulation portion 214, a water shape adjusting portion 216, a display portion 220, and a discharge port 222. In the present embodiment, the manipulation portion 214 is a button. The water inlet portion 210 also serves as a gripping portion. In the present embodiment, the display portion 220 is a side surface of the button 214. Since which state is selected, the raw water discharge state or the purified water discharge state can be recognized by the appearance of the side surface, which is also an example of the display portion. The water shape adjusting portion 216 may change the shape of the discharged water (water shape).

The drain head 208 includes a raw water flow path and a purified water flow path. When the raw water flow path is selected, raw water is discharged from the discharge port 222. The state in which the raw water is discharged in this way is also referred to as a raw water discharge state. When the purified water flow path is selected, the purified water is discharged from the discharge port 222. This state of discharging purified water is also referred to as a purified water discharge state.

The switching part 212 includes a switching mechanism that can switch between purified water discharge and raw water discharge by manipulating the manipulation part 214. The switching mechanism will be described later in detail.

Fig. 16 is a front view of the discharge head 208. Fig. 17 is a cross-sectional view taken along line a-a in fig. 16. Fig. 18 is a cross-sectional view taken along line a-a in fig. 17.

The manipulation portion 214 functions as a switch button. The manipulation portion 214 is pressed to switch between the flow paths. Each time the manipulation part 214 is pressed, switching is performed between the raw water flow path and the purified water flow path. In other words, each time the manipulation portion 14 is pressed, switching is performed between the raw water discharge state and the purified water discharge state. As in the first embodiment described above, the switching mechanism includes a thrust lock mechanism operated by an alternate action. This push lock enables the manipulation portion 214 to function as a button. Each depression of the button 214 toggles the button 214 between the protruding and depressed positions.

In the present embodiment, the raw water discharge position is a protruding position. In the present embodiment, the purified water discharge position is a pressed-down position.

Pressing moves the button 214 rearward. The protruding position is located on the front side with respect to the pressed-down position. Once the button 214 is pressed to the maximum depressed position, the mutual conversion between the projected position and the depressed position is achieved. The maximum depression position is located on the rear side with respect to the depression position. When the button 214 located at the protruding position is pressed, the button 214 stops at the depressed position once the button 214 is moved to the maximum depressed position. The button 214 remains in the depressed position even after the depression of the release button 214. When the button 214 located at the depressed position is pressed, the button 214 stops at the protruding position once the button 214 is moved to the maximum depressed position. The button 214 remains in the protruding position even after the pressing of the release button 214.

Fig. 15-18 show the button 214 in a protruding position. In the drain head 208, when the button 214 is located at the protruding position, the raw water flow path is selected. In the drain head 208, when the button 214 is located at the protruding position, raw water is drained.

Fig. 19 and 20 are cross-sectional views of the drain head 208 when the button 214 is in the depressed position. The cross-section of fig. 19 is taken at the same location as fig. 17. Fig. 20 is a cross-sectional view taken along line a-a in fig. 19.

In the drain head 208, when the button 214 is located at the protruding position, the purified water flow path is selected. In the drain head 208, when the button 214 is in the depressed position, purified water is discharged.

Fig. 21 is an exploded perspective view of the drain head 208.

As shown in fig. 21, the drain head 208 includes a water purification cartridge PC 1. The water purification cartridge PC1 is the same as used in the first embodiment. The above-mentioned water inlet portion (grip portion) 210 includes an outer cylindrical portion 224 and a water purification cartridge PC1 disposed within the outer cylindrical portion 224.

As shown in fig. 17 to 20, a raw water flow path WG is formed outside the water purification cartridge PC1, and a purified water flow path WJ is formed inside the water purification cartridge PC 1. In the raw water discharge state, the raw water flows through the raw water flow path WG, then passes through the switching mechanism, and then is discharged from the discharge port 222. On the other hand, in the purified water discharge state, during the passage of the raw water through the water purification cartridge PC1, the raw water becomes purified water by the function of the water purification functional portion (permeable portion 26) of the water purification cartridge PC 1. The purified water flows through the purified water flow path WJ in the water purification cartridge PC1 and the purified water flow path WJ in the switching mechanism, and is then discharged from the discharge port 222.

The discharge head 208 includes a head body 228, an upper head cover 230, and a lower head cover 232.

The switching portion 212 of the discharge head 208 includes a thrust locking mechanism 234. A thrust lock mechanism 234 is housed in the head body 228. The thrust locking mechanism 234 includes a first switch member 236, a second switch member 238, a switch ring 240, a switch shaft 242, a coil spring 244, a switch cover 246 and an O-ring 248. The switching shaft 242 includes a push rod 250 and a button holder 252. The switch cover 246 includes a back bottom portion 256 and a slit 258. The switching ring 240 is fixed to the front side of the switching cover 246. The switching shaft 242 moves in the front-rear direction under the guidance of the slit 258. The second switch 238 moves together with the switch shaft 242. The second switch 238 and the switch shaft 242 move in the front-rear direction (forward-backward movement) in conjunction with the pressing of the manipulation portion 214. The coil springs 244 bias the switch cover 246 and the switch shaft 242 toward respective directions in which the switch cover 246 and the switch shaft 242 are away from each other. The first switching member 236 is rotated by pressing the button each time, thereby enabling the button to be held at two different positions. The thrust locking mechanism 234 performs an alternate function as in the first embodiment described above.

The discharge head 208 includes a water shape changing assembly 270. The water shape changing assembly 270 includes the water shape regulating portion 216 and the discharge port 222 described above. The water shape changing assembly 270 further includes a valve seat forming portion 280.

The switching mechanism of the discharge head 208 includes the above-described operating portion 214, the first valve Vl, and the second valve V2. The drainage state is switched by opening or closing both valves.

The first valve V1 includes a valve seat 301a, a first valve body 301b, a ball retainer 301c and an elastic body 301 d. The first valve V1 is a ball valve. The first valve body 301b is a ball. The valve seat 301a is an opening edge of the circular hole. The valve seat 301a is formed on the valve seat forming portion 280. The ball 301b is held by the ball holder 301 c. The ball retainer 301c is open downward. The elastic body 301d is disposed between the upper portion of the ball holder 301c and the ball 301 b. The elastic body 301d is a coil spring. The elastic body 301d always biases the ball 301b toward the valve seat 301a side.

The second valve V2 includes a valve seat 302a (see fig. 19 and 20), a second valve body 302b, and a shaft body 302 c. The second valve V2 is a spool valve. The second valve body 302b is an O-ring. The valve seat 302a is an inclined surface formed at the peripheral edge of the opening of the flow path hole (see fig. 19 and 20). The inclined surface is a rearward facing surface. The O-ring 302b is attached to the shaft body 302 c. The shaft body 302c is connected to the switching shaft 242 through the medium of the ball retainer 301 c. The shaft body 302c moves in the front-rear direction together with the switching shaft 242. The switching shaft 242 is connected to the manipulation portion 214. The shaft body 302c moves in the front-rear direction together with the manipulation portion 214 (button).

The shaft body 302c includes an interlock abutment LC 2. The interlock abutment portion LC2 is the rear end portion of the shaft body 302 c. The interlocking abutting portion LC2 moves in the front-rear direction according to the manipulation of the manipulating portion 214.

The push rod 250 of the switching shaft 242 has an end connected to the ball retainer 301c (see fig. 18 and 20). The ball holder 301c moves in the front-rear direction together with the switching shaft 242. The ball holder 301c moves in the front-rear direction together with the manipulation portion 214.

When the operating portion 214 is located at the protruding position, the center of the ball 301b is located outside the center of the valve seat 301a, and thus the first valve V1 is opened. Meanwhile, when the manipulation portion 214 is located at the protruding position, the O-ring 302b attached to the shaft body 302c abuts on the valve seat 302a (see fig. 17 and 18). This abutment closes the second valve V2. In this state, the raw water is discharged. The second valve V2 is a valve for closing the flow path of the purified water.

When the operating portion 214 is located at the depressed position, the ball 301b is fitted into the valve seat 301a to close the first valve V1. In this case, the O-ring 302b attached to the shaft body 302c is located at a position separated from the valve seat 302a (see fig. 19 and 20). In this state, purified water is discharged. The first valve V1 is a valve for closing the raw water flow path.

As shown in the enlarged portion of fig. 21, the discharge head 208 includes a regulating member RG 2. When the water purification cartridge PC1 is not attached, the regulation member RG2 prevents switching to the purified water discharge state.

As shown in the enlarged portion of fig. 21, the drain head 208 includes a biasing member 304. The biasing member 304 biases the adjusting member RG2 such that the adjusting member RG2 is in the first state. In the present embodiment, the biasing member 304 is a torsion spring (torsion coil spring).

In fig. 17 and 18, the manipulation portion 214 is located at the protruding position. When the manipulation part 214 is located at the protruding position, the drain head 208 is in a raw water discharge state. In fig. 19 and 20, the manipulation portion 214 is located at the depressed position. When the operating portion 214 is in the depressed position, the drain head 208 is in a purified water discharge state. In all of these figures, a water purification cartridge PC1 is attached to (a suitable location of) the discharge head 208. A water purification cartridge PC1 is attached to the cartridge receiving portion. In the drain head 208, the cartridge receiving portion is the portion that extends from the interior of the outer cylindrical portion 224 to the interior of the head body 228. By attaching the water purification cartridge PC1 to (a suitable location of) the cartridge receiving portion, the water purification cartridge PC1 is able to perform its function (generate purified water).

Fig. 22(a), 22(b), 23(a) and 23(b) are cross-sectional views showing an unattached state. In fig. 22(a) and 23(a), the manipulation portion 214 is located at the protruding position. In fig. 22(b) and 23(b), the manipulation portion 214 is located at the switch preventing position. In fig. 22(b) and 23(b), the drainage head 208 is in a switching prevention state. The switching prevention state refers to a state in which the interlock abutment portion LC2 abuts on the regulation member RG2 and thus movement is prevented.

Fig. 24(a) is an enlarged cross-sectional view of a portion of fig. 17. Fig. 24(b) is an enlarged cross-sectional view of a part of fig. 19. Fig. 24(a) and 24(b) are cross-sectional views showing the attached state. In fig. 24(a), the manipulation portion 214 is located at the protruding position. In fig. 24(b), the manipulation portion 214 is located at the depressed position.

The state of the adjusting member RG2 in the attached state differs from the state of the adjusting member RG2 in the unattached state. In the unattached state as shown in fig. 22(a), 22(b), 23(a) and 23(b), the adjusting member RG2 is in the first state J1. In the attached state shown in fig. 24(a) and 24(b), the adjusting member RG2 is in the second state J2.

In the present embodiment, the difference between the states of the regulation member RG2 is caused by the difference in the posture of the regulation member RG 2. The biasing member 304 biases the adjusting member RG2 such that the adjusting member RG2 is in the first posture. Therefore, in the unattached state, the regulation member RG2 is in the first posture (see fig. 22 (a)). In the attached state, the regulation member RG1 is in the second posture (see fig. 24 (a)). The difference in posture is achieved by rotation. Attaching water purification cartridge PC1 to the cartridge receiving portion causes end face EF1 of water purification cartridge PC1 to abut against regulating member RG2, thereby rotating regulating member RG 2. This rotation changes the state of the regulation member RG2 from the first state J1 (first posture) to the second state J2 (second posture).

As shown in fig. 24(a), when the water purification cartridge PC1 is attached to set the regulation member RG2 to the second state J2 and the manipulation portion 214 is located at the raw water discharge position, the interlock abutment portion LC2 (the rear end portion of the shaft body 302c) does not abut on the regulation member RG 2.

As shown in fig. 24(b), when water purification cartridge PC1 is attached to set regulation member RG2 to second state J2 and manipulation portion 214 is located at the purified water discharge position, interlock abutment portion LC2 may abut on regulation member RG 2. However, the regulation member RG2 in the second state J2 cannot prevent the interlocking abutment portion LC2 (the rear end portion of the shaft body 302c) from moving rearward. In this case, the regulation member RG2 is pressed by the interlock abutment portion LC2 (the rear end portion of the shaft body 302c) and (slightly) rotated, but does not interfere with the rearward movement of the interlock abutment portion LC2 (the rear end portion of the shaft body 302 c). Therefore, when the regulation member RG2 is in the second state J2, the regulation member RG2 does not prevent the switch from the raw water discharge to the purified water discharge. When the regulation member RG2 is in the second state J2, a transition from the raw water discharge state to the purified water discharge state is achieved.

Meanwhile, when the water purification cartridge PC1 is not attached and the regulation member RG2 is in the first state J1, the interlock abutment portion LC2 (the rear end portion of the shaft body 302c) abuts on the regulation member RG2 during the process of switching from raw water discharge to purified water discharge (see fig. 22(b) and 23 (b)). When the manipulation portion 214 located at the protruding position is pressed, the interlock abutment portion LC2 abuts on the regulation member RG2 before the manipulation portion 214 reaches the pressed-down position. This abutment prevents the operating portion 214 from being pressed further deeply. When in the first state J1, the regulation member RG2 is in a state (posture) capable of receiving the manipulation force transmitted from the manipulation portion 214 to the interlock abutment portion LC2 (shaft body 302 c). As shown in fig. 23(b), inserting a part of the regulation member RG2 into a recessed portion r1 provided on the rear end face of the shaft body 302c allows the regulation member RG2 to stably support the shaft body 302c (interlocking abutment portion LC 2).

Therefore, when the regulation member RG2 is in the first state J1, the regulation member RG2 prevents switching from raw water discharge to purified water discharge. When the regulation member RG2 is in the first state J1, the transition from the raw water discharge state to the purified water discharge state is prevented. When the regulation member RG2 is in the first state J1, the manipulation portion 214 is prevented from moving from the raw water discharge position to the purified water discharge position.

The posture of the regulation member RG2 in fig. 24(a) is different from the posture of the regulation member RG2 in fig. 24 (b). However, these postures cannot prevent the interlocking abutting portion LC2 (manipulating portion 214) from moving to the purified water discharge position. Thus, both of these postures are in the second state J2.

Fig. 25(a) is a perspective view of the regulation member RG 2. Fig. 25(b) is a plan view of the regulation member RG 2. Fig. 25(c) is a side view of the regulation member RG 2.

The adjusting member RG2 includes a shaft portion 310, a release adjustment abutting portion 312, and a switch adjusting portion 314. The shaft portion 310 is a rotational axis of the adjustment member RG 2. The release adjustment abutment portion 312 is located on one side of the shaft portion 310, and the switching adjustment portion 314 is located on the other side of the shaft portion 310. In the first state J1 (see fig. 22(a) and 23(b)), the deregulating abutment portion 312 is located on the upstream side (rear side) of the shaft portion 310, and the switching regulating portion 314 is located on the downstream side (front side) of the shaft portion 310.

As the release-regulation abutment portion 312, a first release-regulation abutment portion 312a and a second release-regulation abutment portion 312b are provided. The first release adjustment abutment portion 312a is an end of the projection portion 318 that projects from the first position of the shaft portion 310. The second release adjusting abutment portion 312b is an end portion of the protruding portion 320 that protrudes from the second position of the shaft portion 310.

The regulation member RG2 also includes a first state retaining portion 316. The first state maintaining portion 316 abuts on the adjacent portion by the biasing force of the biasing member 304, thereby maintaining the regulating member RG2 in the first state J1.

The switching adjustment portion 314 is provided on an end portion of the protruding extension portion 322 extending from the shaft portion 310. The switching adjustment portion 314 includes a boss 324 and support portions 326 provided on the left and right sides of the boss 324. When the regulating member RG2 prevents the interlocking abutting portion LC2 (the shaft body 302c) from moving, the boss 324 is inserted into the protruding portion r1 of the shaft body 302c, and therefore the support portions 326 on the left and right sides of the boss 324 abut on the rear end surface of the shaft body 302c (see fig. 23 (b)). Therefore, the regulation member RG2 stably abuts on the rear end portion of the shaft body 302c, thereby reliably preventing the movement of the shaft body 302 c.

[ third embodiment ]

Fig. 26 is a perspective view of a faucet assembly 400 according to a third embodiment. The faucet assembly 400 is attached to a kitchen sink (not shown). A visually unrecognizable portion, that is, a portion located inside the kitchen sink is omitted in fig. 26.

Faucet assembly 400 includes a body portion 404, a lever handle 406, and a drain head 408. The faucet assembly 400 is a so-called single-lever type faucet. The temperature of the discharged water can be adjusted by the left-right pivoting movement of the lever handle 406. The amount of water discharged can be adjusted by the up-and-down pivoting movement of the lever handle 406. A valve mechanism capable of adjusting the temperature and amount of discharged water is housed inside the body portion 404. Although not shown in the drawings, the faucet apparatus including the faucet device 400 includes a hot water inlet pipe and a water inlet pipe.

The drain head 408 includes a water inlet portion 410, a switching portion 412, a manipulating portion 414, a water shape adjusting portion 416, a display portion 420 and a drain 422. In the present embodiment, the manipulation portion 414 is a dial. The manipulation part 414 is rotated to perform switching between raw water discharge and purified water discharge. In the present disclosure, the drain head 408 is also referred to as a dial drain head. Dial heads are known.

In the present embodiment, the display portion 420 is a display window. The indication in the display window allows the user to determine whether the raw water discharge state or the purified water discharge state is selected. The water shape adjusting portion 416 can change the shape of the discharged water (water shape).

The drain head 408 includes a raw water flow path and a purified water flow path. When the raw water flow path is selected, raw water is discharged from the discharge port 422. When the purified water flow path is selected, the purified water is discharged from the discharge port 422.

The switching part 412 includes a switching mechanism capable of switching between purified water discharge and raw water discharge by manipulating (rotating manipulation) the manipulating part 414. The switching mechanism will be described later in detail.

Fig. 27(a), 27(b) and 27(c) are front views of the drain head 408. Fig. 27(a) is a front view showing a raw water discharge state. Fig. 27(b) is a front view showing a switching prevention state. Fig. 27(c) is a front view showing a purified water discharge state.

Fig. 28 is a cross-sectional view taken along line a-a in fig. 27 (a). Fig. 28 is a cross-sectional view showing a raw water discharge state. Fig. 29 is a cross-sectional view taken along line a-a in fig. 27 (c). Fig. 29 is a cross-sectional view showing a purified water discharge state.

The manipulation portion 414 functions as a switch dial. The manipulation portion 414 is rotated to switch between the flow paths. The manipulation part 414 is rotated to switch between the raw water flow path and the purified water flow path. The manipulating part 414 is located at the first rotation position in the raw water discharge state (see fig. 27 (a)). The manipulation portion 414 is located at the second rotation position in the purified water discharge state (see fig. 27 (c)). In the present embodiment, the angle θ between the first rotational position and the second rotational position is 90 degrees. In the present embodiment, switching between the raw water discharge state and the purified water discharge state is performed by rotating the manipulation portion 414 by the angle θ (90 degrees).

The discharge head 408 includes: a cam mechanism 430 capable of converting rotation of the manipulating portion 414 into movement in the front-rear direction; and a shaft body 432 that is moved in the front-rear direction by the cam mechanism 430. As shown in fig. 29, the shaft body 432 includes a shaft portion 432a, a disk portion 432b, a rear inflow port 432c, a main flow path 432d, and a branch flow path 432 e. The shaft body 432 also includes an interlock abutment LC 3. The interlock abutment portion LC3 is a rear end face of the shaft body 432.

The disk portion 432b includes a purified water outlet 432f and a raw water outlet 432 g. The branch flow path 432e connects the main flow path 432d and the purified water outlet 432 f. The main flow path 432d opens rearward through the rear inflow port 432 c. The purified water outlet 432f is provided at one position in the circumferential direction of the disk portion 432 b. The raw water outflow port 432g is provided at one position in the circumferential direction of the disk portion 432 b. The purified water outlet 432f is different in position in the circumferential direction from the raw water outlet 432 g.

Meanwhile, the adjacent portion adjacent to the shaft body 432 includes: a support hole 440 that supports the shaft body 432 to allow the shaft body 432 to move in the front-rear direction; a disc opposing portion 442; a flow path aperture 444. Regardless of how the steering portion 414 is steered, the adjacent portions are fixed.

The cam mechanism 430 moves the shaft body 432 forward and backward according to the rotation of the manipulation part 414. When the manipulating portion 414 is located at the raw water discharge position or at the purified water discharge position, the disk portion 432b of the shaft body 432 abuts on the disk opposing portion 442. The position of the shaft body 432 at this time is also referred to as a reference position hereinafter. When the manipulation part 414 is located between the raw water discharge position and the purified water discharge position, the disk part 432b is located at a position separated from the disk opposing part 442. That is, when the manipulation part 414 is located between the raw water discharge position and the purified water discharge position, the shaft body 432 is located at the rear side with respect to the reference position.

The shaft body 432 rotates together with the manipulation part 414. That is, the shaft body 432 rotates together with the manipulation portion 414 while moving in the front-rear direction according to the rotation of the manipulation portion 414.

In the purified water discharge state, the purified water outlet 432f of the shaft body 432 is placed on the flow path hole 444 (see fig. 29). In this case, the raw water outflow port 432g is closed by the tray facing portion 442. As a result, the purified water flowing through the purified water flow path WJ in the water purification cartridge PC1 passes through the main flow path 432d, the purified water outlet 432f and the flow path hole 444, and is then discharged from the discharge port 422.

In the raw water discharge state, the raw water outflow port 432g of the shaft body 432 is placed on the flow path hole 444 (see fig. 28). In this case, the purified water outlet 432f is closed by the disc opposing portion 442. As a result, the purified water flowing through the purified water flow path WJ inside the water purification cartridge PC1 is stopped, and the raw water flowing through the raw water flow path WG located outside the water purification cartridge PC1 passes through the raw water outflow port 432g and the flow path hole 444 and is then discharged from the discharge port 422.

Therefore, the switching mechanism according to the third embodiment is an outflow port selection mechanism using a disk portion and a disk opposing portion that rotate together with a manipulation portion (dial). The cam mechanism is incorporated into the outflow port selection mechanism so that the disk portion and the disk opposing portion are positioned apart from each other when the manipulation portion 414 is positioned between the raw water discharge state and the purified water discharge position. This spacing between the disk portion and the disk opposing portion prevents a high water pressure that would otherwise be applied when both the raw water discharge and the purified water discharge are stopped.

As shown in fig. 28 and 29, the drain head 408 includes an adjustment member RG 3. When the water purification cartridge PC1 is not attached, the regulation member RG3 prevents switching to the purified water discharge state.

Although not shown in the drawings, the drain head 408 includes a biasing member. The biasing member biases the adjusting member RG3 such that the adjusting member RG3 is in the first state.

As shown in fig. 28 and 29, in the attached state, the adjusting member RG3 is in the second state J2. In the second state J2, the adjusting member RG3 never hinders the movement of the shaft body 432 in the front-rear direction. Even when the shaft body 432 is located at the rearmost position, since the front end portion of the regulating member RG3 is inserted into the main flow path 432d from the rear flow inlet 432c (see fig. 29), the regulating member RG3 in the second state J2 does not hinder the movement of the shaft body 432. As a result, the transition from the raw water discharge state to the purified water discharge state is achieved.

Fig. 30(a) and 30(b) are cross-sectional views showing an unattached state. In fig. 30(a), the manipulation section 414 is located at the raw water discharge position. In fig. 30(b), the manipulation portion 414 is located at the switch preventing position. As described above, the switching prevention position refers to a position located between the raw water discharge position and the purified water discharge position, and at which the manipulation portion 414 is prevented from being manipulated toward the purified water discharge state.

Fig. 27(b) described above shows the manipulation portion 414 located at the switch prevention position. Fig. 27(a) shows the manipulation part 414 at the raw water discharge position, and fig. 27(c) shows the manipulation part 414 at the purified water discharge position. Therefore, the raw water discharge position, the purified water discharge position, and the switching prevention position are concepts including the rotational position in the circumferential direction.

As shown in fig. 30(a), in the unattached state, the adjusting member RG3 is in the first state J1. Meanwhile, as described above, in the attached state, the regulation member RG3 is in the second state J2 (see fig. 28 and 29).

In the present embodiment, the difference between the states of the regulation member RG3 is caused by the difference in the posture of the regulation member RG 3. The difference in posture is achieved by rotation. Attaching water purification cartridge PC1 to the cartridge receiving portion causes end face EF1 of water purification cartridge PC1 to abut against regulating member RG3, thereby rotating regulating member RG 3. This rotation changes the state of the regulation member RG3 from the first state J1 (first posture) to the second state J2 (second posture).

When the water purification cartridge PC1 is not attached and the regulation member RG3 is in the first state J1, the interlock abutment portion LC3 (the rear end surface of the shaft body 432) abuts on the switch regulation portion of the regulation member RG2 during the process of switching from raw water discharge to purified water discharge (see fig. 30 (b)). When the manipulation portion 414 is rotated from the raw water discharge position, the interlock abutment portion LC3 abuts on the switching regulation portion 460 of the regulation member RG3 before the manipulation portion 414 reaches the purified water discharge position. The switching regulation portion 460 is a front end portion of the regulation member RG3 in the first state J1. This abutment prevents the manipulation portion 414 from further rotating toward the purified water discharge position side.

When in the first state Jl, the regulation member RG3 is in a state (posture) capable of receiving the manipulation force transmitted from the manipulation portion 414 to the interlock abutment portion LC3 (the shaft body 432). As shown in fig. 30(b), the tip end portion of the regulation member RG3 is caught by an angular portion formed by the rear end surface LC3 of the shaft body 432 and the inner peripheral surface 450 of the adjacent portion, and thus, the regulation member RG3 is prevented from rotating and stably supports the rear end surface of the shaft body 432.

Therefore, when the regulation member RG3 is in the first state J1, the regulation member RG3 prevents switching from raw water discharge to purified water discharge. When the regulation member RG3 is in the first state J1, the transition from the raw water discharge state to the purified water discharge state is prevented. When the regulation member RG3 is in the first state J1, the manipulation portion 414 is prevented from rotating from the raw water discharge position to the purified water discharge position.

[ fourth embodiment ]

Fig. 31 is a perspective view of a faucet assembly 600 according to a fourth embodiment. The faucet assembly 600 is mounted to a kitchen sink (not shown). A visually unrecognizable portion, that is, a portion located inside the kitchen sink is omitted in fig. 31.

Faucet assembly 600 includes a body portion 604, a lever handle 606 and a drain head 608. The faucet assembly 600 is a so-called single-lever type faucet. The temperature of the discharged water can be adjusted by the left-right pivoting movement of the lever handle 606. The amount of water discharged can be adjusted by the up-and-down pivoting movement of the lever handle 606. A valve mechanism capable of adjusting the temperature and amount of discharged water is accommodated inside the body portion 604. Although not shown in the drawings, the faucet apparatus including the faucet device 600 includes a hot water inlet pipe and a water inlet pipe.

The discharge head 608 includes a water inlet portion 610, a switching portion 612, a manipulation portion 614, a water shape adjustment portion 616, a display portion 620, and a discharge port 622. In the present embodiment, the manipulation portion 614 is a lever. The manipulation section 614 is manipulated (rotated) to switch between the discharge of raw water and the discharge of purified water. In the present disclosure, the drain head 608 is also referred to as a rod type drain head. Because the lever 614 is located on one side of the switching portion 612, the discharge head 608 is also referred to as a side lever discharge head. Such side-lever heads are known.

In the present embodiment, the display portion 620 is a display window. The indication in the display window allows the user to determine whether the raw water discharge state or the purified water discharge state is selected. The water shape adjustment portion 616 includes a water shape adjustment lever 618. The shape of the discharged water (water shape) can be changed by manipulating the water shape adjusting lever 618.

The drain head 608 includes a raw water flow path and a purified water flow path. When the raw water flow path is selected, raw water is discharged from the discharge port 622. When the purified water flow path is selected, the purified water is discharged from the discharge port 622.

The switching portion 612 includes a switching mechanism capable of switching between purified water discharge and raw water discharge by manipulating the manipulating portion 614 (rotational manipulation of the side lever). The switching mechanism will be described later in detail.

Fig. 32(a) and 32(b) are side views showing a part of the drain 608. Fig. 32(a) is a side view showing a raw water discharge state. Fig. 32(b) is a side view showing a purified water discharge state. Note that in fig. 32(a), 32(b), and fig. 33 and 34 described below, the cover that covers the switching portion 612 and the water shape adjusting portion 616 is omitted.

The manipulation portion 614 functions as a switch lever. The manipulation portion 614 is rotated to switch between the flow paths. The manipulation part 614 is rotated to switch between the raw water flow path and the purified water flow path. The manipulating part 614 is located at the first rotation position in the raw water discharging state (see fig. 32 (a)). The manipulating portion 614 is located at the second rotational position in the purified water discharging state (see fig. 32 (b)). In the present embodiment, the angle θ between the first rotational position and the second rotational position is 90 degrees. The switching between the raw water discharge state and the purified water discharge state is performed by rotating the manipulation portion 614 by the angle θ (90 degrees).

Fig. 33 is a cross-sectional view of the drain head 608 in a raw water discharge state. Fig. 34 is a cross-sectional view of the drain head 608 in a purified water discharge state.

The switching mechanism of the discharge head 608 includes a rotating portion 630 that rotates together with the steering portion 614. The rotating portion 630 has a cylindrical shape as a whole. The rotating part 630 includes an empty space therein. The rotating portion 630 includes a flow path hole 632 extending through a wall of the rotating portion 630 between an outer surface and an inner surface thereof. The rotating portion 630 further includes a protruding portion p4 and a recessed portion r4 adjacent to the protruding portion p 4. As shown in fig. 33 and 34, the rotating portion has a two-layer structure including an outer layer and an inner layer. The concave portion r4 is formed by providing an outer layer removed portion in which a part of the outer layer in the two-layer structure is removed. Protrusions are formed on the outer surface of the inner layer at positions corresponding to the positions of the removed portions of the outer layer. The projection is a projection p 4.

The adjacent portion adjacent to the spinning portion 630 includes a purified water outlet 634, and through the purified water outlet 634, the purified water having passed through the inside of the water purification cartridge PC1 is discharged toward the spinning portion 630.

In the raw water discharge state, the flow path hole 632 is not placed on the purified water outlet 634, and the purified water outlet 634 is closed by the rotating part 630 (see fig. 33). In this state, the flow path hole 632 communicates with the raw water flow path WG. Therefore, the purified water is stopped, and the raw water flows into the inside of the rotation part 630 from the flow path hole 632 and then is discharged from the discharge port 622.

In the purified water discharge state, the flow path hole 632 is placed on the purified water outlet 634 (see fig. 34). In this state, the flow path hole 632 does not communicate with the raw water flow path WG. Accordingly, the raw water stops, and the purified water flows into the inside of the rotation part 630 from the flow path hole 632 and is then discharged from the discharge port 622.

The rotating portion 630 includes an interlock abutment LC 4. The interlock abutting portion LC4 is the above-described protruding portion p 4.

As shown in fig. 33 and 34, the drain head 608 includes an adjustment member RG 4. When the water purification cartridge PC1 is not attached, the regulation member RG3 prevents switching to the purified water discharge state.

Although not shown in the figures, the drain 608 includes a biasing member. The biasing member biases the adjusting member RG4 such that the adjusting member RG4 is in the first state.

As shown in fig. 33 and 34, in the attached state, the adjusting member RG4 is in the second state J2. In the second state J2, the adjusting member RG4 never hinders the movement (rotation) of the rotating portion 630. In the second state J2, (the front end portion of) the regulation member RG4 is located at a position separated from the rotating portion 630. Therefore, the regulation member RG4 does not affect the rotation of the rotating portion 630. As a result, the transition from the raw water discharge state to the purified water discharge state is achieved.

Fig. 35(a) and 35(b) are cross-sectional views showing an unattached state. In fig. 35(a), the manipulation portion 614 is located at the raw water discharge position. In fig. 35(b), the manipulating portion 614 is located at the switch preventing position.

As shown in fig. 35(a), in the unattached state, the regulation member RG4 is in the first state Jl. Meanwhile, in the attached state as described above, the regulation member RG4 is in the second state J2 (see fig. 33 and 34).

In the present embodiment, the difference between the states of the regulation member RG4 is caused by the difference in the posture of the regulation member RG 4. The difference in posture is achieved by rotation. Attaching water purification cartridge PC1 to the cartridge receiving portion causes end face EF1 of water purification cartridge PC1 to abut against regulating member RG4, thereby rotating regulating member RG 4. This rotation changes the state of the regulation member RG4 from the first state J1 (first posture) to the second state J2 (second posture). This rotation is performed so as to raise the tip end portion of the adjusting member RG 4.

In the unattached state and the raw water discharge state, when the regulation member RG4 is in the first state Jl, the front end portion of the regulation member RG4 is inserted into the recessed portion r4 (see fig. 35 (a)). When the manipulating portion 614 is rotated from this state to the purified water discharge position, the switching regulation portion 660 of the regulation member RG4 abuts on the projection portion p4 (interlock abutment portion LC 4). At this time, as shown in fig. 35(b), the switching regulation portion 660 of the regulation member RG4 is sandwiched between the protruding portion p4 and the adjacent portion. Therefore, the manipulation portion 614 cannot be further rotated toward the purified water discharge position side. The switching regulation portion 660 is a front end portion of the regulation member RG4 in the first state J1.

When in the first state Jl and abutting on the protruding portion p4, the regulating member RG4 is in a state capable of receiving the manipulation force transmitted from the manipulation portion 614 to the interlocking abutting portion LC4 (protruding portion p 4). As described above, the switching regulation portion 660 of the regulation member RG4 is sandwiched between the protruding portion p4 and the adjacent portion, which prevents the regulation member RG4 from rotating and enables the regulation member RG4 to stably support the protruding portion p 4.

Therefore, when the regulation member RG4 is in the first state Jl, the regulation member RG4 prevents switching from raw water discharge to purified water discharge. When the regulation member RG4 is in the first state J1, the transition from the raw water discharge state to the purified water discharge state is prevented. When the regulation member RG4 is in the first state J1, the manipulation portion 614 is prevented from rotating from the raw water discharge position to the purified water discharge position.

[ first to fourth embodiments ]

As described above, the above embodiments respectively include: a switching mechanism capable of switching water discharge from the discharge port between raw water discharge and purified water discharge; an adjustment member; a water purification filter element. The adjustment member is capable of undergoing a mutual transition between a first state J1 and a second state J2.

In the above embodiment, the transition between the first state J1 and the second state J2 is achieved by rotating the adjustment member. The method of this transition is not limited to rotation of the adjustment member. The transition may be realized, for example, by moving (parallel movement), moving involving rotation, or the like instead of rotation. The change between the first state J1 and the second state J2 is not limited, and only the respective purposes of the first state J1 and the second state J2 need to be achieved. That is, the first state J1 only needs to prevent the switching mechanism from switching from raw water discharge to purified water discharge, and the second state J2 only needs to allow the switching mechanism to switch from raw water discharge to purified water discharge.

The water purification cartridge PC1 includes a release regulating portion that changes the state of the regulating member from the first state J1 to the second state J2. In the above embodiment, the release regulating portion is the downstream-side end face EF1 of the water purification cartridge PC 1. Needless to say, the release regulating portion is not limited to the end face EF 1. Any portion of water purification cartridge PC1 may become the deregulating portion. In the above embodiment, the release regulating portion of the water purification cartridge PC1 directly abuts on the regulating member. In view of facilitating the direct abutment of the release regulating portion on the regulating member, the release regulating portion is preferably (a part of) the connection terminal portion 140, and more preferably the end face EF 1. However, the release regulating portion does not necessarily have to abut directly on the regulating member. In this case, the degree of freedom in design of the position where the release adjustment portion is provided is further improved.

Examples of the case where the release regulating portion does not directly abut on the regulating member include the following configurations (a) and (b). (a) The drain head includes a coupling portion connected to the regulating member. The release adjustment portion abuts on the coupling portion. The state of the coupling portion is changed by the release of the state of the adjustment portion abutting on the coupling portion, and the state of the adjustment member is changed from the first state J1 to the second state J2 in conjunction with the change of the state of the coupling portion.

(b) The drainage head includes: a detection portion capable of detecting the presence of the release adjustment portion; an actuator that actuates the adjustment member. When the release of the adjustment portion is detected by the detection portion, the adjustment member is actuated by the actuator, which transitions the state of the adjustment member from the first state J1 to the second state J2.

For example, the joining portion in the configuration (a) may be a structure like a button (projection). For example, the detecting portion in the configuration (b) may be a detector that electrically or magnetically detects the release adjusting portion.

The embodiments discussed above each include a biasing member that biases the adjustment member to the first state Jl. The biasing member reliably enables the adjustment member to be brought into the first state in the unattached state. The biasing member need not be present. It is only required that the adjustment member is in the first state J1 in the unattached state. For example, the adjustment member may be brought into the first state J1 by gravity acting on the adjustment member.

The adjustment member includes a switching adjustment portion that is located at a first position in the first state J1 and at a second position in the second state J2. In the above-described embodiment, the front end portion (the end portion on the manipulating portion side) of the adjusting member in the first state J1 is the switching adjusting portion. In the adjusting member, the position of the switching adjusting portion is not limited.

In the above-described embodiment, the change in the posture of the adjustment member causes the switching adjustment portion to be in the first position or the second position.

Fig. 36 is a side view showing the rotation of the adjustment member RGl according to the first embodiment. The regulation member is rotated about the rotation center line Z1, which moves the switch regulation portion 114 on a circle centered on the rotation center line Z1. This movement changes the position of the switching adjustment portion 114. The position of the switching regulation portion 114 in the first state J1 is the first position PS 1. The position of the switching regulation portion 114 in the second state J2 is a second position PS 2.

As described above, the manner of mutual conversion between the first state Jl and the second state J2 is not limited to the rotation of the adjustment member. The conversion may be achieved by moving (parallel movement, etc.) the adjustment member. For example, the adjustment member may slide to perform the conversion. Therefore, the difference between the first position PS1 and the second position PS1 is not limited to the difference in position on a single circular arc.

In the switching process from the raw water discharge to the purified water discharge performed by the switching mechanism, the switching regulation portion 114 located at the first position PS1 abuts on the interlock abutment portion LC1, and the interlock abutment portion LC1 moves in conjunction with the movement of the switching mechanism. Note that, in one embodiment, the first position PS1 may be set at one position, or may be set at a plurality of positions.

As described above, the adjusting member RG1 according to the first embodiment includes the first state retaining portion 116. The first state maintaining portion 116 abuts on the adjacent portion AJ1 using the biasing force of the biasing member 104, thereby maintaining the regulating member RG1 in the first state J1. Even when the switching regulation portion 114 is pressed by the interlock abutment portion LC1, the abutment of the first state retaining portion 116 on the adjacent portion AJ1 stably maintains the first state J1. Therefore, switching to the purified water discharge state is reliably prevented (see fig. 36). Adjacent portion AJ1 is the portion adjacent to modulating member RG 1.

The adjusting member RG1 is biased by the biasing member 104 in a first rotational direction in which the adjusting member RG1 transitions from the second state J2 to the first state J1. The abutment force of the interlock abutment portion LC1 acts in the direction in which the regulation member RG1 rotates in the first rotational direction. However, this rotation is hindered by the abutment between the first state maintaining portion 116 and the adjacent portion AJ 1. On the other hand, regulation member RG1 abuts on relief portion DR1 of water purification cartridge PC1, thereby rotating in the second rotational direction in which regulation member RG1 shifts from first state J1 toward second state J2. In the adjusting member RG1 in the second state J2, the pressing force of the release adjusting portion DR1 is balanced with the biasing force of the biasing member 104. Therefore, the second state J2 is stably maintained. Further, as described above, the biasing force of the biasing member 104 causes the regulating member RG1 to achieve the separation promoting effect.

The member forming the interlocking abutment portion is not limited. The interlocking abutment portion moves in conjunction with the movement of the switching mechanism. The interlocking abutment portion moves in conjunction with the movement of the operating portion. The interlock abutment portion may be a member included in the switching mechanism, or may be a member not included in the switching mechanism. The manipulation portion is prevented from being manipulated toward the purified water discharge state side by preventing the interlocking abutting portion from moving toward the purified water discharge state side.

During the switching process from the raw water discharge to the purified water discharge by the switching mechanism, the switching regulation portion 114 located at the second position PS2 does not abut on the interlock abutment portion LC 1. Note that in one embodiment, the second position PS2 may be set at one position, or may be set at a plurality of positions.

In view of achieving the mutual conversion between the first state J1 and the second state J2 with a simple structure, the adjustment member is preferably fixed in a rotatable manner. The mutual transition between the first state J1 and the second state J2 is preferably achieved by a rotation of the adjustment member.

As described above, in the above embodiment, the release regulation portion of the water purification cartridge PC1 is the end face EF1 on the downstream side. When the water purification cartridge PC1 is attached in place, the release regulating portion switches the regulating member from the first state J1 to the second state J2.

As shown in fig. 14(a) and 14(c), the release regulation portion DR1 (end face EF1) is an annular surface. The relief portion DR1 is a surface extending in the circumferential direction of the water purification cartridge PC 1. The relief portion DR1 is an annular surface coaxial with the water purification cartridge PC 1. The relief portion DR1 is a flat surface. The releasing regulation portion DR1 extends along a plane perpendicular to the center line of the water purification cartridge PC 1.

The overall length of water purification cartridge PC1 will vary due to manufacturing tolerances. This change causes a change in the axial direction position of the release regulating portion DR1 (end face EF1) in the attached state. This axial direction refers to the axial direction of the water purification cartridge PC 1.

The deviation in the axial direction position of release regulation portion DR1 hinders the abutment between release regulation portion DR1 and the release regulation abutment portion of regulation member RG 1. However, since release regulation portion DR1 is annularly provided, even when the axial direction position of release regulation portion DR1 is deviated, the abutment between release regulation portion DR1 and regulation member RG1 is easily maintained. In other words, even when the posture (angle) of regulating member RG1 is slightly changed, the abutment between release regulating portion DR1 and regulating member RG1 is easily maintained. Therefore, the second state J2 is surely achieved.

In the second state J2, the two positions of regulating member RG1 abut on the deregulating portion DR 1. One position of abutment is the deregulating abutment portion 118 (first deregulating abutment portion 112a), and the other position of abutment is the deregulating abutment portion 120 (second deregulating abutment portion 112b) (see fig. 12 (b)). Therefore, the stability and reliability of the abutment are enhanced, so that the second state J2 is reliably maintained.

Fig. 37 is an enlarged cross-sectional view of the water discharge head 8 according to the first embodiment. Fig. 37 is a cross-sectional view showing the vicinity of the downstream side end portion of the water purification cartridge PC 1.

As described above, the water purification cartridge PC1 includes the connection terminal portion 140. The cartridge receiving portion of the drain head 8 includes an insertion portion 800, and the connection terminal portion 140 is inserted into the insertion portion 800. The insertion portion 800 refers to a portion adjacent to the outside in the radial direction of the connection terminal portion 140. The radial direction refers to the radial direction of the water purification cartridge PC 1. In the embodiment of fig. 37, the insertion portion 800 is constructed of multiple members.

The connection terminal portion 140 includes a gap forming portion 802, and the gap forming portion 802 forms a gap gp1 between the connection terminal portion 140 and the insertion portion 800. The gap forming portion 802 forms a downstream side end portion of the connection terminal portion 140. The gap forming portion 802 forms a downstream side end portion of the first cylindrical portion 150 (see fig. 14). The gap gp1 is located outside in the radial direction of the gap forming portion 802. The radial direction refers to the radial direction of the water purification cartridge PC 1. The gap gp1 exists over the entire circumference of the gap-forming portion 802. The end surface of the gap forming portion 802 is the above-described end surface EF 1. An end surface of the gap forming portion 802 is a release regulation portion DR 1.

The end face EF1 is a circumferentially continuous end face that is continuous entirely (360 °) in the circumferential direction of the water purification cartridge PC 1. The circumferentially continuous end face EF1 extends in a direction perpendicular to the axial direction. This structure enables the regulation member RG1 to abut on the end face EF1 and to function properly without a process of positional alignment in the circumferential direction between the water purification cartridge PC1 and the insertion portion 800 of the drain head 8. In other words, this structure enables the regulating member RG1 to abut on the end face EF1 and to function properly regardless of the positional relationship in the circumferential direction between the drain head 8 and the water purification cartridge PC1 attached thereto. The end face EF1 is preferably a surface that extends continuously in a direction perpendicular to the axial direction. However, the end face EF1 may include a recess and/or the like as long as the structure "enables the regulation member RG1 to abut on the end face EF1 and to function properly regardless of the positional relationship in the circumferential direction between the drain head 8 and the water purification cartridge PC1 attached thereto" is "such that the regulation member RG1 can abut on the end face EF1 and can function properly.

The end face EF1 is preferably a surface that abuts on the adjusting member RG 1. However, the abutment of the end face EF1 and the regulation member RG1 may be achieved by linear contact or point contact. Specifically, the abutment may be achieved by, for example, abutment between a ridge of the end face EF1 and a surface of the regulation member RG1, abutment between an edge of the end face EF1 and a ridge of the regulation member RG1, or abutment between points of the end face EF1 and the regulation member RG 1. Abutment between end face EF1 and regulating member RG1 may be achieved by surface contact, line contact or point contact.

As described above, the connection terminal portion 140 includes the O-ring 162 (see fig. 14). The O-ring 162 is located between the insertion portion 800 and the connection terminal portion 140 and seals a gap between the insertion portion 800 and the connection terminal portion 140. This sealing enables the connection terminal portion 140 to connect the purified water flow path WJ1 inside the connection terminal portion 140 with the purified water flow path WJ2 located on the downstream side with respect to the connection terminal portion 140 in a highly watertight manner.

As described above, the connection terminal portion 140 includes the flange 160 (see fig. 14). The flange 160 is disposed in the entire circumferential direction. The circumferential direction refers to the circumferential direction of the water purification cartridge PC1 (connection terminal part 140). The flange 160 is an example of a wall portion provided on the upstream side (end face EF1) of the release regulating portion DR 1. The flange 160 is an example of a wall portion provided between the deregulating portion DR1 and the O-ring 162 located on the upstream side of the deregulating portion DR 1. The wall portion 160 need not be provided in the entire circumferential direction. The wall portion 160 need not support an O-ring 162. For example, the wall portion 160 may be provided only at a position separated from the O-ring.

An O-ring 162 is disposed on the O-ring groove. The O-ring groove is an annularly continuous groove in the circumferential direction. The O-ring groove is a groove for receiving an O-ring provided on the upstream side of the wall portion 160. Here, E1, E2 and E3 are defined as follows. E1 is the groove width of the O-ring groove. E2 is the maximum width of the O-ring in a state where the O-ring is attached to the O-ring groove and the water purification cartridge is not attached to the cartridge receiving part. E3 is the maximum width of the O-ring in the state where the O-ring is attached to the O-ring groove and the water purification cartridge is attached to the cartridge receiving part. E1, E2 and E3 are widths measured in the axial direction of the water purification cartridge. E1 is preferably greater than E2. E1 is preferably greater than E3. These dimensional relationships help the O-ring move slightly within the O-ring groove when the water purification cartridge is attached to or detached from the cartridge receiving portion, whereby the O-ring is less likely to adhere to the O-ring groove or the cartridge receiving portion. As a result, the attachability and detachability of the water purification cartridge to the cartridge receiving part is improved.

The present embodiment uses an O-ring 162, the O-ring 162 being an annular packing having a circular cross-section. However, the O-ring 162 may be replaced by an O-ring having an elliptical cross-section. The cross-sectional shape of such annular filler is not limited. Examples of usable annular packings include a quadrangular packing having a quadrangular cross section, a U-shaped packing having a U-shaped cross section, a V-shaped packing having a V-shaped cross section, a Y-shaped packing having a Y-shaped cross section, and an X-shaped packing having an X-shaped cross section. From the viewpoint of ensuring water-tightness and preventing the annular packing from adhering to the water purification cartridge and other surrounding members in combination, it is preferable to use an O-ring, and it is particularly preferable to use an O-ring having a circular cross section.

In the present disclosure, a radially-direction outermost portion M1 of the release regulating portion DR1 is defined. The radially outermost portion M1 refers to a portion located outermost in the radial direction in the release portion DR 1. In the embodiment of fig. 37, the radially outermost portion M1 is the outer peripheral edge of the end face EF 1. The radial direction refers to the radial direction of the water purification cartridge PC1 (connection terminal part 140).

In the present disclosure, a radially outermost portion M2 of the wall portion 160 is defined. The radially outermost portion M2 refers to a portion located outermost in the radial direction in the wall portion 160. In the embodiment of fig. 37, the radially outermost portion M2 is the outer peripheral edge of the wall portion 160. The radial direction refers to the radial direction of the water purification cartridge PC1 (connection terminal part 140).

The radially-direction outermost portion M1 of the release regulating portion DR1 is located radially inward with respect to the radially-direction outermost portion M2.

The release regulating portion DRl is a portion abutting on the regulating member RGl. If damage or an unintentional recess were to be made to release-regulating portion DR1, it may not be possible to properly bring release-regulating portion DR1 into abutment with regulating member RG 1. For example, the abutment between release regulation portion DR1 and regulation member RG1 may be insufficient, or the rotation angle of regulation member RG1 may vary depending on the circumferential direction position (phase) of water purification cartridge PC 1. From this viewpoint, when the water purification cartridge PC1 is attached, it is preferable that collision between the release regulation portion DR1 and other members be avoided. In other words, the deregulation portion DR1 preferably has excellent crashworthiness.

However, such collision between the deregulating portion DR1 and other components is actually liable to occur. During the process of attaching water purification cartridge PC1 (e.g., replacing used water purification cartridge PC1 with a new water purification cartridge PC 1), water purification cartridge PC1 is inserted into the cartridge receiving portion. In this insertion, the release regulating portion DR1 is positioned most forward in the insertion direction. Therefore, other members (e.g., the insertion portion 800) are liable to collide with the release regulation portion DR 1.

From the viewpoint of collision avoidance, the connection terminal portion 140 preferably includes the above-described gap forming portion 802. The presence of the gap forming portion 802 positions the release regulating portion DR1 radially inward with respect to the abutting insertion portion 800, thereby enhancing crashworthiness.

From the viewpoint of collision avoidance, the connection terminal portion 140 preferably includes the above-described wall portion 160. As shown in fig. 37, a circumferential outer surface 804 is formed between the wall portion 160 and the release regulation portion DR 1. Gap gp1 is located radially outward of circumferential outer surface 804. The circumferential outer surface 804 has a constant diameter. The diameter of the circumferential outer surface 804 is equal to the diameter of the radially outermost portion M1 of the release adjusting portion DR 1.

From the viewpoint of collision avoidance, the wall portion 160 is preferably provided. Due to the presence of the wall portion 160, the possibility of collision between the wall portion 160 and other members during insertion of the water purification cartridge PC1 is higher than that between the deregulation portion DR1 and other members. The wall portion 160 can protect the release portion DR 1. Thus, crashworthiness is enhanced. From the viewpoint of collision avoidance, the radially-direction outermost portion M1 of the releasing regulation portion DR1 is preferably located radially inward with respect to the radially-direction outermost portion M2 of the wall portion 160.

The insertion portion 800 includes an inwardly projecting portion 810. The inwardly protruding part 810 protrudes inwardly in a radial direction. The inwardly projecting portion 810 is located on the downstream side with respect to the wall portion 160. The inwardly projecting portion 810 abuts on the wall portion 160. This abutment sets the position of the water purification cartridge PC 1.

In the present disclosure, a radially innermost portion M3 of the inwardly projecting portion 810 is defined. The radially innermost portion M3 refers to the portion located on the radially innermost side in the inwardly projecting portion 810. In the embodiment of fig. 37, the radially innermost portion M3 is the inner peripheral edge of the inwardly projecting portion 810. The radial direction refers to the radial direction of the water purification cartridge PC1 (connection terminal part 140).

From the viewpoint of collision avoidance, the radially-direction outermost portion M1 of the release regulating portion DR1 is preferably located radially inward with respect to the radially-direction innermost portion M3 of the inwardly projecting portion 810.

Fig. 38 shows the same cross section as fig. 37. The other reference numerals of fig. 37 are confusing and fig. 38 is shown for ease of understanding.

A double arrow D1 in fig. 38 shows the diameter of the virtual cylindrical surface passing through the radially outermost portion M1 of the deregulating portion DR 1. In the present embodiment, D1 is the outer diameter of end face EF 1. The virtual cylindrical surface in this disclosure is coaxial with the water purification cartridge PC 1.

The double arrow D2 in fig. 38 shows the diameter of the virtual cylindrical surface passing through the radially outermost portion M2 of the wall portion 160. In the present embodiment, D2 is the outer diameter of the outer peripheral edge of wall portion 160.

The double arrow D3 in fig. 38 shows the diameter of the virtual cylindrical surface passing through the radially innermost portion M3 of the inwardly projecting portion 810. In this embodiment, D3 is the inner diameter of inwardly projecting portion 810.

A double-headed arrow D4 in fig. 38 shows the diameter of the virtual cylindrical surface passing through the radially outermost portion M4 of the connection terminal portion 140. In the present embodiment, D4 is the outer diameter of the maximum outer diameter portion of the connection terminal portion 140. In the present embodiment, D4 is the outer diameter of the radially outermost portion M4. In the present embodiment, D4 is the outer diameter of the maximum outer diameter portion of the connection terminal portion 140. In this embodiment, D4 is the outer diameter of third cylindrical portion 154.

A double-headed arrow D5 in fig. 38 shows the diameter of a virtual cylindrical surface passing through the radially innermost portion M5 of the adjacent portion AJ2 opposite to the radially outermost portion M4 of the connection terminal portion 140. In this embodiment, D5 is the inside diameter of the portion of the cartridge receiving section opposite the radially outermost portion M4. In other words, in this embodiment, D5 is the inner diameter of the adjacent section AJ 2. The adjacent portion AJ2 is a portion adjacent to the radially outermost portion M4.

The opposing surface opposite to the outer surface of the gap forming portion 802 includes a radially innermost portion M6 (see fig. 37). The double arrow D6 in fig. 38 shows the diameter of the virtual cylindrical surface passing through the radially innermost portion M6. In the present embodiment, D6 is the inner diameter of the opposing surface opposite the outer surface of the gap-forming portion 802.

A double arrow D7 in fig. 38 shows a distance in the axial direction between the center of the O-ring 162 of the connection terminal portion and the release regulation portion DR 1.

Note that the units of D1 to D7 are mm.

From the viewpoint of avoiding a collision, the difference (D2-D1) is preferably larger. The difference (D2-D1) is preferably greater than or equal to 0.5mm, more preferably greater than or equal to 1.0mm, and still more preferably greater than or equal to 2.0 mm. Too small of D1 reduces the inner diameter of end face EF1, which results in a reduced purified water passage area. Such too small D1 is not preferred in view of water flow. From this viewpoint, the difference (D2-D1) is preferably less than or equal to 6.0mm, more preferably less than or equal to 5.0mm, and still more preferably less than or equal to 4.0 mm. In the present example, the difference (D2-D1) was 3.0 mm.

From the viewpoint of avoiding a collision, the difference (D3-D1) is preferably larger. The difference (D3-D1) is preferably greater than or equal to 0.1mm, more preferably greater than or equal to 0.5mm, and still more preferably greater than or equal to 0.8 mm. In view of the water flow rate, too small a D1 is not preferable. From this viewpoint, the difference (D3-D1) is preferably less than or equal to 3.0mm, more preferably less than or equal to 2.0mm, and still more preferably less than or equal to 1.5 mm. In the present example, the difference (D3-D1) was 1.0 mm.

As described above, the gap gp1 is preferably larger from the viewpoint of avoiding collision. From this viewpoint, the difference (D6-D1) is preferably greater than or equal to 0.2mm, more preferably greater than or equal to 0.5mm, and still more preferably greater than or equal to 1.0 mm. In view of the water flow rate, too small a D1 is not preferable. From this viewpoint, the difference (D6-D1) is preferably less than or equal to 6.0mm, more preferably less than or equal to 5.0mm, and still more preferably less than or equal to 4.0 mm. In the present example, the difference (D6-D1) was 2.0 mm.

As shown in fig. 37, a gap gp2 exists between the radially outermost portion M4 of the connection terminal portion 140 and the radially innermost portion M5 of the adjacent portion AJ 2. From the viewpoint of avoiding collision between the deregulating portion DR1 and other members, the gap gp2 is preferably smaller. The narrow gap gp2 prevents the position of water purification cartridge PC1 from deviating in the radial direction when water purification cartridge PC1 is inserted. Therefore, the crashworthiness between the regulation portion DR1 and other members is enhanced.

From the viewpoint of avoiding a collision, the difference (D5-D4) is preferably smaller than the difference (D6-D1).

The difference (D5-D4) is preferably larger from the viewpoint of increasing the flow rate of water in the raw water flow path WG. From this viewpoint, the difference (D5-D4) is preferably greater than or equal to 0.5mm, more preferably greater than or equal to 1.0mm, and still more preferably greater than or equal to 1.5 mm. When D5 is too large, the water discharge head and the water purification cartridge having the water purification function tend to become large in size. When D4 is too small, the flow rate of water in the purified water flow path WJ is liable to decrease, and/or the holding capacity of a purification material or the like decreases, which may result in a decrease in water purification performance. From these viewpoints, the difference (D5-D4) is preferably less than or equal to 5mm, more preferably less than or equal to 4mm, and still more preferably less than or equal to 3 mm. In the present example, the difference (D5-D4) was 2.0 mm.

From the viewpoint of increasing the flow rate of water in the purified water flow path WJ and increasing the holding capacity of a purification material or the like to enhance the water purification performance, D4 is preferably larger. From this viewpoint, D4 is preferably greater than or equal to 20mm, more preferably greater than or equal to 25mm, and still more preferably greater than or equal to 27 mm. From the viewpoint of preventing the drain head having a water purification function and the water purification cartridge from becoming large in size, too large D4 is not preferable. From this viewpoint, D4 is preferably less than or equal to 40mm, more preferably less than or equal to 35mm, and still more preferably less than or equal to 32 mm. In this example, D4 is 29.5 mm.

The connection terminal portion 140 includes an abutment regulation (setting) portion 812 provided at a position in the axial direction of the water purification cartridge PC 1. In the embodiment of fig. 37, the abutment defining portion 812 is the wall portion 160.

When the water purification cartridge PC1 is inserted, the abutment regulation portion 812 may collide with the inwardly projecting portion 810. The water pressure of the purified water flowing downstream generates a force acting on the abutment prescribed portion 812. Therefore, the contact regulation portion 812 needs rigidity and strength. From this viewpoint, it is preferable to ensure that the abutment defining portion 812 is given an appropriate thickness in the axial direction. In addition, as described above, it is preferable that the gap gp1 be reliably provided, and the gap forming portion 802 be preferably provided to reliably provide the gap gp 1. From these viewpoints, D7 is preferably greater than or equal to 2.0mm, more preferably greater than or equal to 4.0mm, and still more preferably greater than or equal to 5.0 mm. In view of the reduction in size of the drain head, D7 is preferably less than or equal to 15.0mm, more preferably less than or equal to 10.0mm, and still more preferably less than or equal to 8.0 mm. In this example, D7 is 6.0 mm.

As described above, in the transition from the first state J1 to the second state J2, the adjusting member RG1 rotates about the rotational center line Z1. This rotation causes both end portions of regulating member RG1 (the deregulating abutting portion 112, the switching regulating portion 114) to move to respective positions apart from the center line Z2 of water purification cartridge PC1 (see fig. 38). Therefore, both end portions of the regulation member RG1 may be in contact with the adjacent portions AJ 1. If this contact occurs, the rotation of the regulation member RG1 is hindered, and therefore the second state J2 cannot be achieved. Furthermore, as mentioned above, the position of the end face EF1 may vary due to the length tolerance of the water purification cartridge PC 1. In order to achieve the second state J2 throughout the entire variation range, the second state J2 needs to be satisfied within a certain angular range. If the above contact occurs within a certain angular range, the rotation of regulating member RG1 is hindered, so that the number of defective water purification cartridges PC1 that cannot achieve second state J2 is increased.

To avoid these problems, the rotation center line Z1 is preferably disposed closer to the center line Z2. The distance between the center line of rotation Z1 and the center line Z2 is preferably less than or equal to 3.0mm, more preferably less than or equal to 2.0mm, and still more preferably less than or equal to 1.0 mm. The lower limit value of the distance between the rotation center line Z1 and the center line Z2 is 0 mm. In the present embodiment, the distance between the rotation center line Z1 and the center line Z2 is 0mm (see fig. 38).

When the rotation center line Z1 of the regulation member RG1 is disposed closer to the center line Z2, the release regulation portion DR1 abutting on the regulation member RG1 is also preferably disposed closer to the center line Z2. That is, in view of the abuttability of release regulation portion DR1 on regulation member RG1, D1 is preferably small. From this viewpoint, D1 is preferably less than or equal to 20.0mm, more preferably less than or equal to 16.0mm, and still more preferably less than or equal to 14.0 mm. From the viewpoint of water flow rate, D1 is preferably greater than or equal to 6.0mm, more preferably greater than or equal to 8.0mm, and still more preferably greater than or equal to 10.0 mm. In this example, D1 is 12.0 mm.

From the viewpoint of the abuttability and crashworthiness on the regulation member RG1, D1/D2 is preferably less than or equal to 0.95, more preferably less than or equal to 0.90, and still more preferably less than or equal to 0.85. From the viewpoint of water flow rate, D1/D2 is preferably greater than or equal to 0.60, more preferably greater than or equal to 0.70, and still more preferably greater than or equal to 0.75. In this example, D1/D2 was 0.80.

From the viewpoint of the abuttability and crashworthiness on the regulation member RG1, D1/D4 is less than or equal to 0.70, more preferably less than or equal to 0.60, and still more preferably less than or equal to 0.50. From the viewpoint of water flow rate, D1/D4 is preferably greater than or equal to 0.25, more preferably greater than or equal to 0.30, and still more preferably greater than or equal to 0.35. In this example, D1/D4 was 0.41.

Examples of the material of the regulating member include resin or metal. From the viewpoint of cost, when the material is metal, the process for manufacturing the regulating member is preferably sintering, casting or forging. When the material is a resin, a thermoplastic resin which is easily formable is preferably used. From the viewpoint of formability, more preferable examples include polyoxymethylene resin (POM), polyphenylene sulfide resin (PPS), acrylonitrile butadiene styrene resin (ABS), and polypropylene resin (PP). From the viewpoint of strength, polyphenylene sulfide resin (PPS) is particularly preferable.

Examples of the material of the release regulating portion of the water purification cartridge include resin and metal. From the viewpoint of cost, when the material is metal, the process for manufacturing the release regulating portion is preferably sintering, casting or forging. When the material is a resin, a thermoplastic resin which is easily formable is preferably used. From the viewpoint of formability, more preferable examples include polyoxymethylene resin (POM), polyphenylene sulfide resin (PPS), acrylonitrile butadiene styrene resin (ABS), and polypropylene resin (PP). From the viewpoints of formability and cost, acrylonitrile butadiene styrene resin (ABS) and polypropylene resin (PP) are particularly preferable.

After a predetermined period of use, the water purification cartridge PC1 is replaced with a new one without replacing the adjustment member. The regulating member which is repeatedly used for a long time preferably has high rigidity and high wear resistance. From this viewpoint, the material of the regulation member preferably has a longitudinal elastic modulus of 0.1GPa or more, more preferably 1.0GPa or more, and still more preferably 3.0GPa or more. In view of the above-described preferred materials, the longitudinal elastic modulus of the material of the regulation member is preferably less than or equal to 10GPa, more preferably less than or equal to 9GPa, and still more preferably less than or equal to 8 GPa. The longitudinal elastic modulus of the material of the regulating member is preferably greater than the longitudinal elastic modulus of the material of the relief-regulating portion of the water purification cartridge. The longitudinal elastic modulus is obtained from the relationship between tensile stress and strain amount. The longitudinal elastic modulus is a proportionality constant between the amount of strain and stress in the elastic range, also referred to as young's modulus. The longitudinal modulus of elasticity of typical materials is described in many documents and is known. If the literature fails to provide accurate values, the longitudinal modulus of elasticity can be measured according to ASTM D638. In the measurement, a test piece made of the same material as that of the member to be measured may be used.

In the above embodiment, the permeable portion 26 is configured to allow water to pass through the permeable portion 26 from the outer peripheral surface of the water purification cartridge PC1 to the inside of the water purification cartridge PC 1. However, the structure of the permeable portion is not limited to such an embodiment. For example, the outer peripheral surface of water purification cartridge PC1 may be formed with a water-impermeable circumferential wall, and the permeable portion may be provided inside the circumferential wall. In this case, water flows from the upstream-side end (rear end) of the water purification cartridge PC1 to the inside of the water purification cartridge PC1, passes through the permeable portion, and reaches the connection terminal portion 140. In this structure, through holes or the like are provided in the above-described rear forming portion 142, thereby allowing water to flow into the water purifying cartridge PC1 from the rear end thereof.

In the above embodiment, the water purification function portion is a permeable portion, and raw water passes through the permeable portion to generate purified water. As described above, the permeable part is one example of the water purification function part. Purified water may be produced without passing through the permeable portion. For example, the water purification cartridge may include a metal material that releases metal ions having a disinfecting, antibacterial, bactericidal or bacteria growth inhibiting effect, so that purified water can be generated.

The purified water in the present disclosure conceptually includes the following generated water (1) and (2):

(1) produced water obtained by removing substances, ions and the like contained in water using an absorbent, a filtration membrane or the like;

(2) to provide beneficial characteristics (e.g., disinfection effect by addition of metal ions, etc.), produced water is obtained by adding metal ions, electrons, substances, etc. to water.

Specifically, the purified water in the present disclosure conceptually includes water generated by the following function a and/or function B. In other words, the water purification function part in the present disclosure conceptually includes a function part having the following function a and/or function B.

[ function A ]

Function a represents one or more functions selected from the group consisting of functions a1, a2, A3, a4, and a5 below.

A1: the function of absorbing and removing substances contained in water by using an absorbent such as activated carbon.

A2: the function of filtering out substances contained in water by using a filtering material. Preferably, the filtering material is a filtering membrane such as a reverse osmosis membrane, an ultrafiltration membrane, a microfiltration membrane, a nanofiltration membrane, a porous hollow fiber membrane, or the like, and the function of filtering substances contained in water is achieved by the filtering membrane.

A3: a function of trapping and removing metal ions and the like contained in water using an ion exchange resin or the like.

A4: allowing the metal material to release metal ions having a disinfecting, antibacterial, bactericidal and/or bacterial growth inhibiting effect.

A5: allowing the metal material to release metal ions and allowing oxygen in the water to acquire electrons released together with the released metal ions, thereby generating a function of active oxygen.

Examples of substances to be removed from water for purification include chlorine, volatile organic compounds, agrochemicals, musty substances and heavy metals. Preferably removing one or more substances selected from chlorine, volatile organic compounds, agrochemicals, musty substances and heavy metals.

Examples of volatile organic compounds include chloroform, bromodichloromethane, dibromochloromethane, bromoform, tetrachloroethylene, trichloroethylene, 1,1, 1-trichloroethane and total trihalomethanes. One or more substances selected from the group consisting of chloroform, bromodichloromethane, dibromochloromethane, bromoform, tetrachloroethylene, trichloroethylene, 1,1, 1-trichloroethane and total trihalomethanes are preferably removed.

Examples of agrochemicals include 2-chloro-4, 6-bis (ethylamino) -1,3, 5-triazine. The 2-chloro-4, 6-bis (ethylamino) -1,3, 5-triazine is preferably removed.

Examples of the musty substances include 2-methylisoborneol, geosmin and phenol. One or more substances selected from 2-methylisoborneol, geosmin and phenol are preferably removed.

Examples of heavy metals include lead, mercury, copper, arsenic and cadmium. Preferably removing one or more substances selected from lead, mercury, copper, arsenic and cadmium.

Examples of the metal ions in function a4 include zinc ions and silver ions. Preferably releasing one or more ions selected from the group consisting of zinc ions and silver ions.

Examples of the bacteria in function a4 include colonic bacilli and staphylococci, and miscellaneous bacteria defined as common bacteria (included among common bacteria). It is preferred to achieve a disinfecting, antibacterial, bactericidal or bacterial growth inhibiting effect on one or more of those bacteria.

The active oxygen in function a5 may decompose organic substances such as bacteria. Examples of the bacteria include colonic bacilli and staphylococci, and miscellaneous bacteria defined as common bacteria (included among common bacteria). One or more of these bacteria are preferably decomposed.

In addition to suppressing the manufacturing cost of the water purification cartridge, the water purification cartridge preferably has a function a1 from the viewpoint of effectively removing chlorine and harmful substances. In addition to function a1, the water purification cartridge may also have one or more functions selected from the group consisting of functions a2, A3, a4 and a 5.

[ function B ]

Function B is a function of purifying water by using a filter material and/or a medium defined in "(vi) water purifier" in appendix 2 (on article 2) of miscellaneous finished product quality label regulation (revision date: 3/30/effective date: 4/1/2017). In other words, the water purification cartridge preferably comprises a water purification function which purifies water by using the filter material and/or medium defined in "(vi) water purifier" in appendix 2 (for article 2) of miscellaneous finished product quality label regulations (revision date: 3/30/effective date: 4/1/2017).

The water purification function portion having function a and/or function B may constitute a part of the purified water flow path, or may alternatively be provided in the purified water flow path, or further alternatively may be provided in a pool portion communicating with the purified water flow path.

The water purification cartridge may be of an integrated type in which the water purification cartridge is integrated as a whole so as not to be disassembled, or of a composite type in which the water purification cartridge is composed of a plurality of detachable members.

For example, a composite water purification cartridge may have a configuration including a cartridge body portion and an adapter member including a relief portion. The adapter member can be connectable to the cartridge body portion, or alternatively, can be non-connectable to the cartridge body portion. In other words, the adapter member may be attachable to the cartridge body portion, or alternatively, may not be attachable to the cartridge body portion. When the adapter member is attachable to the cartridge body portion, the adapter member may be removably attached to the cartridge body portion, or alternatively, may be non-removably attached to the cartridge body portion.

The configuration of the adapter member and the cartridge body portion is not limited. Examples of the configurations may include the following configurations B1 to B4.

B1: a construction in which the adapter members are attached to the cartridge body portion and then these in the attached state are attached to the cartridge receiving portion.

B2: a construction wherein the adapter member is first attached to the cartridge receiving portion and then the cartridge body portion is attached to the adapter member.

B3: a construction wherein the adapter member is attached to one portion of the cartridge receiving portion and then the cartridge body portion is attached to another portion of the cartridge receiving portion.

B4: a construction wherein the adapter member is first attached to one portion of the cartridge receiving portion and then the cartridge body portion is attached to the adapter member and another portion of the cartridge receiving portion.

In the above configurations B1-B4, the adapter member may be removably attached to the cartridge receiving portion, or alternatively, may be non-removably attached to the cartridge receiving portion. However, when the adapter member is non-removably attached to the cartridge receiving portion, the adjustment member remains in the second state. Accordingly, the adapter member is preferably removably attached to the cartridge receiving portion.

The present disclosure also provides other inventions not included in the inventions recited in the claims (including the independent claims). The modes, members, configurations, and the like described in the claims and the embodiments of the present disclosure are considered as inventions based on their respective advantageous effects.

The modes, members, configurations, and the like disclosed in the embodiments can be individually applied to all the inventions disclosed in the present disclosure, including the inventions recited in the claims, even if not all the modes, members, and configurations are included according to the embodiments.

INDUSTRIAL APPLICABILITY

The above described disclosure is applicable to universal faucets.

List of reference numbers

2. 200, 400, 600 tap device

4,204, 404, 604 body parts

6, 206, 406, 606 lever handle

8. 208, 408, 608 drainage head

14. 214, 414, 614 steering section

RG 1-RG 4 Regulation Member

DR 1-DR 4 deregulating moieties

LC 1-LC 4 interlocking abutting part

PC1 water purification filter element

140 connection terminal part of water purification cartridge

EF1 end face (downstream side end face of water purification filter PC 1)

J1 Regulation Member first State

J2 Regulation Member second State