阅读说明：本技术 餐具清洗机 (Tableware cleaning machine ) 是由 则竹克哉 于 2021-06-29 设计创作，主要内容包括：本发明提供一种能够实现锁定机构的节省空间化的餐具清洗机。餐具清洗机(1)具备：壳体(9)、清洗槽(7)、门体(70)以及锁定机构(5)。锁定机构具有：被卡合部(95),其设置于壳体开口的内周缘；直动卡合部(20),其以能够在与被卡合部能够卡合的卡合位置、与从被卡合部隔离开的隔离位置之间进行直动的方式被支撑于门体,并朝向卡合位置被施力；操作部(51),其以能够摆动的方式被支撑于门体,接受从锁定状态朝向未锁定状态进行切换的手动操作而围绕摆动轴心进行摆动；以及凸轮部(53),其设置成能够与操作部成一体地进行摆动,并将操作部的摆动传递给直动卡合部,而使直动卡合部从卡合位置朝向隔离位置进行直动。(The invention provides a tableware washing machine capable of saving space of a locking mechanism. A dish washing machine (1) is provided with: a housing (9), a cleaning tank (7), a door body (70), and a lock mechanism (5). The lock mechanism has: an engaged portion (95) provided on the inner peripheral edge of the opening of the housing; a linear movement engaging part (20) which is supported on the door body in a linear movement manner between an engaging position capable of engaging with the engaged part and an isolating position isolated from the engaged part, and is applied with force towards the engaging position; an operation unit (51) which is supported by the door body in a swingable manner, and which swings around a swing axis upon receiving a manual operation for switching from a locked state to an unlocked state; and a cam part (53) which is provided so as to be capable of swinging integrally with the operation part, and which transmits the swinging of the operation part to the linear movement engagement part so as to linearly move the linear movement engagement part from the engagement position to the separation position.)

1. A dish washing machine (1), the dish washing machine (1) comprising: a housing (9) having a housing opening (9H) with a front side opened; a cleaning tank (7) which is housed in the housing (9) and can house an object to be cleaned (TW 1); a door body (70) that is provided in front of the cleaning tank (7) and that is movable between a closed position at which the casing opening (9H) is closed and an open position at which the casing opening (9H) is open; and a lock mechanism (5) that switches between a locked state in which the door body (70) is held at the closed position and an unlocked state in which the door body is not held at the closed position,

it is characterized in that the preparation method is characterized in that,

the lock mechanism (5) has: an engaged portion (95) provided on the inner peripheral edge of the housing opening (9H); a linear movement engaging portion (20) which is supported by the door body (70) so as to be linearly movable between an engaging position where the linear movement engaging portion can engage with the engaged portion (95) and a spaced position where the linear movement spaced from the engaged portion (95) is spaced, and which is biased toward the engaging position; an operation unit (51) which is swingably supported by the door body (70), and which is swung about a swing axis (X50) upon receiving a manual operation for switching from the locked state to the unlocked state; and a cam portion (53) that is provided so as to be capable of swinging integrally with the operation portion (51), and that transmits the swinging movement of the operation portion (51) to the linear movement engagement portion (20) so as to cause the linear movement engagement portion (20) to perform linear movement from the engagement position toward the separation position.

2. Dishwasher (1) according to claim 1,

the linear motion engaging part (20) performs linear motion in a linear motion direction along the swing axis (X50),

the cam portion (53) includes a cam surface (53A), the cam surface (53A) is a curved surface extending along the circumferential direction of the swing axis (X50) toward the opposite side of the engaged portion (95) in the linear motion direction, and the cam surface (53A) is formed to be spaced apart from the engaged portion (95) in the linear motion direction as the swing progresses,

the linear motion engagement section (20) includes: and an abutting portion (23) that can abut against the cam surface (53A) from the side opposite to the engaged portion (95) in the linear motion direction.

3. Dishwasher (1) according to claim 2,

the engaged portion (95) is provided with: a side end edge (91) extending in the vertical direction at least in one of the horizontal direction among the inner peripheral edges of the housing opening (9H),

the direction of the linear motion is the left-right direction,

the door body (70) includes: a door opening (70H) provided in a side surface (71) facing the engaged portion (95) in the closed position,

the linear movement engagement portion (20) can be engaged with the engaged portion (95) by protruding from the door opening (70H) when moved to the engagement position.

4. Dishwasher (1) according to claim 2 or 3,

the linear motion engagement section (20) includes: a plate member in which a linear motion engagement portion main body (21) and the contact portion (23) are formed in a flat plate shape, wherein the linear motion engagement portion main body (21) extends in the linear motion direction and is engageable with the engaged portion (95), the contact portion (23) is connected to the linear motion engagement portion main body (21) on the opposite side of the engaged portion (95) in the linear motion direction and changes the orientation thereof, and protrudes toward the engaged portion (95) in the linear motion direction and is capable of coming into contact with the cam surface (53A),

the operation portion (51) and the cam portion (53) are formed integrally.

5. Dishwasher (1) according to one of claims 2 to 4,

the lock mechanism (5) has: a lock monitoring means (38) for monitoring whether or not the linear motion engagement section (20) is in the engagement position,

the door body (70) has: a support frame (10) for supporting the operation part (51) in a manner of swinging,

the support frame (10) is integrally provided with: guide sections (12A, 12B) for guiding the linear motion engagement section (20) in the linear motion direction, and a holding section (18) for holding the lock monitoring mechanism (38).

Technical Field

The present invention relates to a dishwasher.

Background

An example of a conventional dish washing machine is disclosed in japanese patent laid-open publication No. 2016-. As shown in fig. 1 to 4 of the publication, the dishwasher includes a housing, a washing tub, a door, and a lock mechanism.

The housing has a housing opening with a front opened. The cleaning tank is accommodated in the housing and can accommodate an object to be cleaned. The door body is integrated with the cleaning tank which can be pulled out from the shell body, and is arranged in front of the cleaning tank. The door body is movable between a closed position at which the case opening is closed and an open position at which the case opening is opened. The locking mechanism can be switched to: a locked state in which the door is held at the closed position, and an unlocked state in which the door is not held at the closed position.

More specifically, the lock mechanism includes: an engaged portion, a swing shaft, an engaging portion, and an operating portion. The engaged portion is provided at an upper end edge of an inner peripheral edge of the opening of the housing. The swing shaft, the engagement portion, and the operation portion are integrally formed. The swing shaft is swingably supported by the door body. The engaging portion is swingable about a swing shaft between an engaging position where the engaging portion can be engaged with the engaged portion and a spaced position spaced from the engaged portion, and is biased toward the engaging position. The operation unit receives: the engagement portion is swung from the engagement position to the spaced position by swinging about a swing shaft by a manual operation for switching from the locked state to the unlocked state.

According to this dishwasher, when the door is in the closed position, the engagement portion that is biased to swing to the engagement position engages with the engaged portion, and the lock mechanism is thereby switched to the locked state. On the other hand, the operation portion is swung upon receiving a manual operation, and the engagement portion is swung to the spaced position, whereby the lock mechanism is switched to the unlocked state.

However, according to the conventional dishwasher described above, it is difficult to reduce the occupied space for the engaging portion to swing between the engaging position and the spaced position, and therefore it is difficult to achieve space saving of the lock mechanism.

Disclosure of Invention

Therefore, it is one of the non-limiting objects of the present invention to provide a dish washing machine capable of saving the space of the lock mechanism. This object is achieved by the means of claim 1. Further developments of the invention are described in the dependent claims.

The dish washing machine of the present invention comprises: a housing having a housing opening with a front opened; a cleaning tank which is accommodated in the housing and can accommodate an object to be cleaned; a door body that is provided in front of the cleaning tank and is movable between a closed position at which the opening of the casing is closed and an open position at which the opening of the casing is opened; and a lock mechanism that switches between a locked state in which the door is held at the closed position and an unlocked state in which the door is not held at the closed position, wherein the lock mechanism includes: a clamped part arranged on the inner periphery of the shell opening; a linear movement engaging portion that is supported by the door body so as to be linearly movable between an engaging position at which the linear movement engaging portion is engageable with the engaged portion and a spaced position spaced apart from the engaged portion, and that is biased toward the engaging position; an operation portion that is swingably supported by the door body, and that is swung about a swing axis upon receiving a manual operation for switching from the locked state to the unlocked state; and a cam portion provided so as to be capable of swinging integrally with the operation portion, and transmitting the swinging of the operation portion to the linear movement engagement portion so as to linearly move the linear movement engagement portion from the engagement position toward the isolation position.

According to the dishwasher of the present invention, when the door body is in the closed position, the linear movement engagement portion that is urged to be linearly moved to the engagement position is engaged with the engaged portion, and thereby the lock mechanism is switched to the locked state. On the other hand, the operation portion is swung in response to the manual operation, and the linear movement engagement portion is linearly moved to the spaced position by the cam portion, whereby the lock mechanism is switched to the unlocked state.

Here, according to the dishwasher, the cam portion swings integrally with the operation portion, and the linear movement engagement portion performs linear movement. The occupied space for the linear movement of the linear movement engagement portion can be smaller than: the engagement portion of the conventional dishwasher occupies a space for swinging.

Therefore, according to the dish washing machine of the present invention, the space saving of the lock mechanism can be realized.

In another aspect of the present invention, it is preferable that the linear motion engagement portion linearly moves in a linear motion direction along the pivot axis. Preferably, the cam portion includes a cam surface that is a curved surface extending in a circumferential direction of the swing shaft center toward a side opposite to the engaged portion in the linear motion direction, and that is formed to be spaced apart from the engaged portion in the linear motion direction as the swing progresses. Preferably, the linear motion engagement portion includes: and an abutting portion capable of abutting against the cam surface from the opposite side to the engaged portion in the linear movement direction.

With this specific configuration, the occupied space for the linear motion engaging portion to perform linear motion between the engaging position and the spaced position can be further reduced. Further, with this configuration, when the linear movement engaging portion is brought into sliding contact with the engaged portion and is linearly moved temporarily toward the spaced position, the contact portion is separated only from the cam surface and the operating portion does not swing, so that generation of abnormal noise from the operating portion can be suppressed.

In another aspect of the present invention, it is preferable that the engaged portion is provided with: and a side edge extending in the vertical direction at least in one of the left and right directions of the inner peripheral edge of the opening of the housing. The linear motion direction is preferably the left-right direction. Preferably, the door body includes: and a door opening provided on a side surface facing the engaged portion in a state where the door opening is in the closed position. Preferably, the linear movement engaging portion is movable to an engaging position, and protrudes from the door opening to be engageable with the engaged portion.

When a user moves the door body to the open position, the user can hardly see the side surface of the door body. With this configuration, the door opening provided on the side surface of the door and the linear movement engagement portion protruding from the door opening are difficult to visually recognize by the user, and therefore, the appearance can be improved.

In another aspect of the present invention, it is preferable that the linear motion engagement portion includes: the linear motion engaging portion main body is formed as a flat plate member extending in a linear motion direction and engageable with the engaged portion, and the abutting portion is connected to the linear motion engaging portion main body on a side opposite to the engaged portion in the linear motion direction and changes its orientation, and protrudes toward the engaged portion side in the linear motion direction and is engageable with the cam surface. Preferably, the operation portion and the cam portion are integrally formed.

With this specific configuration, the occupied space for the linear motion engaging portion to perform linear motion between the engaging position and the spaced position can be further reduced.

In another aspect of the present invention, it is preferable that the lock mechanism includes: and a lock monitoring mechanism for monitoring whether the linear motion engagement portion is in the engagement position. The door body preferably has: a support frame for supporting the operation part to be capable of swinging. Preferably, the support frame is integrally formed with: a guide portion for guiding the linear motion engagement portion along the linear motion direction, and a holding portion for holding the lock monitoring mechanism.

In this case, the operation portion is supported by the support frame, and the guide portion formed on the support frame guides the linear motion of the linear motion engagement portion in the linear motion direction, so that it is possible to suppress variation in the positional relationship between the cam portion that swings integrally with the operation portion and the linear motion engagement portion. As a result, it is possible to smoothly perform: the cam portion transmits the swing of the operation portion to the linear movement engagement portion to cause the linear movement engagement portion to perform a linear movement. Further, since the guide portion and the holding portion are integrally formed in the support frame, if it is assumed that one of the guide portion and the holding portion is formed in the support frame and the other of the guide portion and the holding portion is formed in a member different from the support frame, and then they are assembled, the configuration of the present invention can suppress: the deviation of the positional relationship between the linear motion engagement portion guided by the guide portion and the lock monitoring mechanism held by the holding portion. As a result, the lock monitoring mechanism can accurately monitor whether or not the linear motion engagement portion is at the engagement position.

Other aspects and advantages of the invention will become apparent from the following description and the appended drawings, illustrating by way of example the embodiments disclosed herein, and the description and the drawings in their entirety disclosing the inventive concepts.

Drawings

Fig. 1 is a schematic cross-sectional view of a dishwasher according to an embodiment, showing a state in which a washing tub is at a storage position and a door body is at a closing position.

Fig. 2 is a schematic cross-sectional view similar to fig. 1, showing a state in which the cleaning tank and the door body slide forward from the storage position and the door body is in the open position.

Fig. 3 is a partial perspective view showing a front portion of the wash tank, an upper portion of the door body, and an engaged portion of the case opening.

Fig. 4 is a perspective view mainly showing a handle, a linear motion engagement portion, and a support frame that supports these components, the handle, the linear motion engagement portion, and the support frame being formed integrally with an operation portion, a swing shaft, and a cam portion.

Fig. 5 is a perspective view showing the handle and the linear motion engagement portion.

Fig. 6 (a) is a partial front view showing a state in which the operation portion is not manually operated and the linear movement engagement portion is at the engagement position, and fig. 6 (b) is a partial front view showing a state in which the operation portion is manually operated and swung and the linear movement engagement portion is linearly moved to the spaced position.

Description of the figures

1 … dishwasher; 9H … shell opening; 9 … a housing; TW1 … items to be washed (dishes); 7 … cleaning tank; 70 … door body; 5 … locking mechanism; 95 … are engaged; 20 … linear motion engaging part; x50 … swing axis; 51 … operation part; 53 … cam portion; 53A … cam surface; 23 … abutment; 91 … side edge of shell opening; 71 … a side surface of the door body facing the engaged portion in a closed position; 70H … door opening; 21 … straight-acting clamping part main body; 38 … lock monitoring mechanism (lock sensor); 39 … force applying spring; 39a … one end of a biasing spring; 10 … support frame; 12A, 12B … guide; 18 … holding part; 39B … the other end of the biasing spring; 19 … spring catch.

Detailed Description

Embodiments according to the present invention will be described below with reference to the drawings.

Examples

As shown in fig. 1, a dish washing machine 1 according to embodiment 1 is an example of a specific embodiment of the dish washing machine according to the present invention. The dishwasher 1 is a washer of a front surface pull type provided below a ceiling CT1 of a built-up kitchen.

In the present embodiment, the side of the combination kitchen facing the housing 9, i.e., the left side of the paper in fig. 1, is defined as the front of the housing 9, and the opposite side, i.e., the right side of the paper in fig. 1, is defined as the rear of the housing 9. The side directed to the left in a state where the user faces the casing 9, that is, the depth side in fig. 1, is defined as the left side of the casing 9, and the side directed to the right, that is, the front side of the paper in fig. 1, is defined as the right side of the casing 9. The front-back direction, the left-right direction, and the up-down direction shown in each of fig. 2 and later are shown as corresponding to fig. 1.

Casing, washing tank, door body and lid

As shown in fig. 1, dishwasher 1 includes a casing 9, a washing tub 7, a door 70, and a lid 8.

The housing 9 is a substantially box-shaped body. The upper portion of the housing 9 is covered with a ceiling CT 1. The housing 9 has a housing opening 9H. The case opening 9H is open over a wide range from the upper end to the lower end of the front portion of the case 9, and communicates the inside of the case 9 with the outside.

As shown in fig. 1 to 3, washing tub 7 is a substantially box-shaped body, and is partitioned into an internal space for washing tableware TW1 by front wall 7F, left and right side walls, and a rear wall. Further, cleaning tank 7 has opening 7H which opens the upper part of the internal space thereof.

Door 70 is integrally assembled to front wall 7F of washing tub 7 from the front, and is provided in front of washing tub 7. The front surface 70F of the door 70 is a flat surface extending in the vertical direction and the horizontal direction, and constitutes an appearance surface that can be reached by the eyes of a user in the built-up kitchen. A door protruding portion 78 and a door upper surface cover 79 are provided at the upper end of the door 70.

The door projection 78 projects forward and upward from an upper portion of the front surface 70F of the door 70, extends in the left-right direction, and projects in the left-right direction from the left and right ends of the front surface 70F of the door 70. A recess 78D is formed in the center of the front surface of the door body protrusion 78 in the left-right direction so as to be recessed rearward.

As shown in fig. 4, the door 70 includes a support frame 10 made of resin and provided inside a door protruding portion 78. The support frame 10 extends from the left to the right of the door body protrusion 78 in the left-right direction, and reinforces the door body protrusion 78.

As shown in fig. 1 to 3, door upper surface cover 79 extends in the front-rear direction so as to connect the lower end of the rear surface of door protruding portion 78 to the upper end of front wall 7F of washing tub 7, extends in the left-right direction so as to connect the upper end of left side surface 71 and the upper end of right side surface of door 70, and covers door 70 from above.

Cleaning tank 7 is housed in case 9. The position of cleaning tank 7 shown in fig. 1 is a storage position. The door 70 closes the case opening 9H in a state where the cleaning tank 7 is at the storage position. The position of the door 70 shown in fig. 1 is a closing position.

A slide rail mechanism, not shown, is disposed between the left and right side walls of cleaning tank 7 and the left and right inner wall surfaces of casing 9. As shown in fig. 2, cleaning tub 7 and door 70 are slidable with respect to case 9 by the slide rail mechanism. The door body 70 slides forward from the housing 9 together with the cleaning tub 7, and opens the housing opening 9H.

Although not shown, when cleaning tub 7 and door 70 slide further forward of casing 9 from the positions shown in fig. 2, they become: almost the entire opening 7H of cleaning tub 7 is exposed from casing 9, and this state becomes: the door 70 opens the case opening 9H in a wide range. The position of the door 70 shown in fig. 2 and the position of the door 70 slid further forward from the position shown in fig. 2 are open positions.

As shown in fig. 1 and 2, lid 8 is disposed at an upper portion in case 9, and can close and open opening 7H of cleaning tank 7. Lid 8 is moved up and down between the position shown in fig. 1 and the following positions in conjunction with the sliding of cleaning tank 7 by an unillustrated linkage mechanism: a position where the cleaning tank 7 is allowed to slide as shown in fig. 2 by being lifted from the position shown in fig. 1.

As shown in fig. 1, in a state where the cleaning tank 7 is at the storage position, the case opening 9H is closed, and the opening 7H is closed by the lid body 8.

As shown in fig. 2, in a state where cleaning tank 7 is slid forward from casing 9, opening 7H exposed to the outside of casing 9 is opened by lid 8 left in casing 9. Accordingly, the user can store tableware TW1 in washing tub 7 through opening 7H, or can take tableware TW1 out of washing tub 7.

Tableware TW1 is, for example: tableware such as teabowls, plates and glasses, or tableware such as chopsticks, spoons and forks. The dish TW1 is an example of the "object to be washed" of the present invention.

As shown in fig. 1, provided in the housing 9 are: a water supply pipe P1, a water supply solenoid valve 69, and a water discharge pipe P2. Water supply pipe P1 is used to supply water from a water supply source, not shown, provided outside dish washing machine 1 into washing tub 7. The water supply solenoid valve 69 opens and closes a water supply pipe P1 to switch between supply and stop of water to the washing tub 7. The drain pipe P2 is used to drain the washing water in the washing tub 7 to the outside of the dish washing machine 1.

A water storage portion 7P for storing washing water is provided at the bottom of washing tub 7. Further, a dish basket 7C is disposed in washing tub 7. The tableware TW1 is placed in the tableware basket 7C.

The cleaning tank 7 is provided with an exhaust passage 7E. The exhaust passage 7E is opened at an upper portion of the front surface 70F of the door body 70 and communicates with the outside of the cleaning tank 7. The air in the cleaning tank 7 is discharged to the outside of the machine, that is, to the front of the casing 9 through the exhaust passage 7E.

Locking mechanism

As shown in fig. 1 to 6, the dish washing machine 1 further includes a lock mechanism 5. The lock mechanism 5 is switched to: a locked state in which the door 70 is held at the closed position in a state in which the wash tub 7 is at the storage position, and an unlocked state in which the door 70 is not held at the closed position.

As shown in fig. 1 to 3 and 6, the lock mechanism 5 includes an engaged portion 95. The engaged portion 95 is provided with: an upper portion of a side end edge 91 extending in the vertical direction on the left side among the inner peripheral edges of the housing opening 9H.

More specifically, as shown in fig. 3, the side end edge 91 of the case opening 9H is formed of a metal member having a substantially W-shaped cross section. The engaged portion 95 is formed at: the right end among the side edges 91 protrudes toward the rear side and is a rear end and an upper end of a flat plate-shaped portion extending in the up-down direction.

In addition, a part of cleaning tank 7 and a part of door 70 shown by a solid line in fig. 3 correspond to positions of cleaning tank 7 and door 70 shown in fig. 2. A part of cleaning tank 7 and a part of door 70 shown by a two-dot chain line in fig. 3 correspond to positions of cleaning tank 7 and door 70 shown in fig. 1.

The door body 70 includes a door body opening 70H. As shown by the two-dot chain line in fig. 3, in a state where wash tub 7 is at the storage position and door 70 is at the closing position, the upper portion of left side face 71 of door 70 is opposed to engaged portion 95. The door opening 70H is a substantially rectangular hole provided in an upper portion of the left side face 71 of the door 70.

Further, the lock mechanism 5 includes: the linear motion engagement portion 20 shown in fig. 3 to 6, the lock sensor 38 and the biasing spring 39 shown in fig. 4 and 6, and the handle 50 shown in fig. 1, 2, and 4 to 6. The lock sensor 38 is an example of the "lock monitoring mechanism" of the present invention.

As shown in fig. 4 and 5, the linear motion engagement portion 20 includes: the linear motion engagement portion main body 21 and the contact portion 23 are formed as flat plate members.

The linear motion engagement portion main body 21 extends in a linear motion direction, which is a left-right direction. The left end of the linear motion engagement portion main body 21 is covered with a cap 25 made of resin. The left side of the cap 25 is: the curved shape is curved to the right side in a substantially circular arc shape as it goes to the rear.

The contact portion 23 is connected to the linear movement engagement portion main body 21 on the opposite side to the engaged portion 95 in the linear movement direction. The contact portion 23 extends from the right end of the linear motion engagement portion main body 21 so as to change its direction to the forward direction. The contact portion 23 extends so that its direction changes from forward to left, and a contact projection 23A having a substantially semicircular shape is formed on the left end of the contact portion 23.

Further, the linear movement engagement portion 20 includes: a sensor pressing portion 28 and a spring locking portion 29. The sensor pressing portion 28 is formed at the lower end of a plate-shaped piece that protrudes further downward from a portion that protrudes forward from the middle portion in the lateral direction of the linear engagement portion main body 21 and extends in the front-rear direction. The spring locking portion 29 is formed by a hole and a cutout formed in the middle portion of the plate-like piece in the vertical direction and arranged in parallel in the front-rear direction.

The flat plate member on which the linear movement engagement portion main body 21, the contact portion 23, the sensor pressing portion 28, and the spring locking portion 29 are formed is made of metal in the present embodiment. This makes it possible to easily manufacture the flat plate member by punching or pressing a metal plate such as a steel plate.

As shown in fig. 4, guide portions 12A and 12B are integrally formed on the support frame 10. The guide portions 12A and 12B are formed at the left portion of the support frame 10 and project rearward from positions away from each other in the left-right direction.

A gate-shaped guide is formed on the upper surface of the guide portion 12A. The portion of the linear motion engagement portion main body 21 close to the cap 25 is inserted into the gate-shaped guide of the guide portion 12A. A pair of front and rear protrusions are formed on the upper surface of the guide portion 12B. The portion of the linear movement engagement portion main body 21 close to the contact portion 23 is sandwiched by the pair of projections of the guide portion 12B. The guide portions 12A and 12B guide the linear motion engagement portion 20 in the linear motion direction.

Although not shown, inside the door body protrusion 78, there are provided: and a restricting member that protrudes downward from a position above the guide portions 12A and 12B and restricts the floating of the linear engagement portion 20.

The position of the linear motion engagement portion 20 shown in fig. 3, 4, and 6 (a) is a position of linear motion to the leftmost side. The position of the linear motion engagement portion 20 shown in fig. 3, 4, and 6 (a) is an engagement position. The engagement position of the linear movement engagement portion 20 is a position capable of engaging with the engaged portion 95.

As shown in fig. 3, the left end of the linear motion engaging portion main body 21 in the linear motion engaging portion 20 linearly moved to the engaging position protrudes from the door opening 70H in a state of being covered with the cap 25. As shown by the two-dot chain line in fig. 3, in a state where the cleaning tank 7 is at the storage position and the door body 70 is at the closing position, the left end of the linear movement engaging portion main body 21 in the linear movement engaging portion 20 linearly moved to the engaging position engages with the engaged portion 95 with the cap 25 interposed therebetween. Fig. 6 (a) also shows: the left end of the linear movement engagement portion main body 21 is engaged with the engaged portion 95 with the cap 25 interposed therebetween.

In a state where cleaning tub 7 is at the storage position and door 70 is at the closing position, lock mechanism 5 is switched to: the door body 70 is held in a locked state at the closing position.

The position of the linear movement engaging portion 20 shown in fig. 6 (b) is a position of linear movement to the rightmost side. The position of the linear motion engagement portion 20 shown in fig. 6 (b) is a spaced position. The isolation positions of the linear motion engagement portion 20 are: the linear movement engagement portion 20 is spaced apart from the engaged portion 95.

When the linear movement engagement portion 20 linearly moves to the isolation position, the lock mechanism 5 is switched to: there is no unlocked state that holds the door body 70 at the closed position.

In this way, the linear movement engagement portion 20 is supported by the support frame 10 of the door body 70 so as to be linearly movable between the engagement position and the isolation position.

As shown in fig. 4 and 6, the holding portion 18 is integrally formed on the support frame 10. The holding portion 18 is configured to: includes a plate-like piece 18A projecting downward from the guide portion 12A, a pair of left and right locking claws 18B projecting forward from the plate-like piece, and a positioning shaft 18C.

As shown in fig. 6, the spring locking portion 19 is integrally formed on the plate-like piece 18A of the support frame 10. The spring locking portion 19 is formed by ribs protruding from the upper and left portions of the plate-like piece 18A, and a hole formed so as to penetrate the ribs.

The lock sensor 38 is held by the holding portion 18 of the support frame 10 via the plate-shaped piece 18A, the pair of left and right locking claws 18B, and the positioning shaft 18C. The lock sensor 38 is a microswitch that connects or disconnects a plurality of internal contacts by being pressed by a monitor protrusion 38A provided on the right side surface.

The biasing spring 39 is a tension coil spring, and has one end 39A locked to the spring locking portion 29 of the linear movement engaging portion 20 and the other end 39B locked to the spring locking portion 19 of the support frame 10. The biasing spring 39 biases the linear movement engagement portion 20 to the left side toward the engagement position.

As shown in fig. 6 (a), when the linear movement engaging portion 20 biased by the biasing spring 39 linearly moves to the engaging position, the sensor pressing portion 28 of the linear movement engaging portion 20 presses the monitor protrusion 38A of the lock sensor 38. Accordingly, the lock sensor 38 monitors: the linear movement engagement portion 20 is in the engagement position.

As shown in fig. 6 (b), when the linear motion engagement portion 20 linearly moves to the spaced position against the biasing force of the biasing spring 39, the sensor pressing portion 28 of the linear motion engagement portion 20 is separated from the monitoring protrusion 38A of the lock sensor 38. Accordingly, the lock sensor 38 monitors: the linear movement engagement portion 20 is not in the engagement position.

As shown in fig. 4 and 5, the handle 50 is a resin-made integral member in which the operation portion 51, the swing shaft 52, and the cam portion 53 are integrally formed. The handle 50 can be easily manufactured by injection molding of a thermoplastic resin or the like.

The swing shaft 52 is a cylindrical shaft centered on a swing shaft center X50 extending in the left-right direction. The linear movement direction of the linear movement engaging portion 20 is a direction along the swing axis X50.

As shown in fig. 4, wall portions 17A and 17B are formed at the center in the left-right direction of the support frame 10 so as to protrude upward and extend in a flat plate shape along the front-rear direction. The front portions of the wall portions 17A, 17B constitute: the left and right inner walls of the recess 78D of the door body protrusion 78. The rear portions of the wall portions 17A and 17B support the swing shaft 52 rotatably about a swing axis X50 via semicircular recesses.

Wall portions 17C and 17D are formed on the support frame 10 on the outer side in the left-right direction than wall portions 17A and 17B, and in parallel with wall portions 17A and 17B. The wall portions 17C and 17D position the swing shaft 52 by sandwiching the swing shaft 52 in the left-right direction.

Although not shown, the door body protrusion 78 includes: a restricting member for restricting the floating of the swing shaft 52, the restricting member being configured to: the wall portions 17A and 17B protrude downward from positions above the wall portions 17A and 17B toward semicircular recesses of the wall portions 17A and 17B.

In this way, the operation portion 51 and the cam portion 53 integrally formed on the swing shaft 52 are swingably supported by the support frame 10 of the door body 70.

The operation portion 51 is connected to the swing shaft 52 in a range sandwiched between the wall portions 17A and 17B of the support frame 10 in the left-right direction. The operation portion 51 is formed as: the direction thereof is a curved shape which changes from the swing shaft 52 toward the upper side and the front side and then toward the lower side.

As shown in fig. 1, the operation portion 51 is disposed in the recess 78D of the door body protrusion 78. As shown in fig. 2, the operation unit 51 swings in the operation direction R1 about a swing axis X50 in response to a manual operation by a user for switching the lock mechanism 5 from the locked state to the unlocked state: the user inserts a hand into the recess 78D and grips the distal end of the operation portion 51 while pushing it upward.

As shown in fig. 4 and 5, the cam portion 53 is connected to the left end of the swing shaft 52. The cam portion 53 protrudes downward and rearward from the swing shaft 52, and includes: a cam surface 53A formed at the front end of the cam portion 53.

As shown in fig. 5 and 6, the cam surface 53A is: a curved surface extending in the circumferential direction of the swing axis X50 toward the right side opposite to the engaged portion 95 in the linear motion direction. The rear end 53A2 of the cam surface 53A is spaced apart from the engaged portion 95 in the linear movement direction and is spaced apart to the right with respect to the front end 53A1 of the cam surface 53A.

That is, the cam surface 53A extends in the circumferential direction of the pivot axis X50 while being inclined with respect to the pivot axis X50. As shown in fig. 6 (a) and (b), the cam surface 53A is formed by: the operation portion is swung in the operation direction R1 of the operation portion 51 in response to the manual operation of the user, and is spaced from the engaged portion 95 in the linear movement direction.

The abutment projection 23A of the linear movement engaging portion 20 can abut against the cam surface 53A from the right side, which is the opposite side to the engaged portion 95 in the linear movement direction.

As shown in fig. 6 (a), in a state where the operation portion 51 is not operated by a manual operation and is not swung, the contact projection 23A of the linear movement engagement portion 20 at the engagement position is in contact with the tip 53A1 of the cam surface 53A.

As shown in fig. 6 (b), when the operation unit 51 is manually operated and swung in the operation direction R1, the contact protrusion 23A of the linear movement engagement portion 20 is pressed rightward while sliding in contact from the front end 53A1 of the cam surface 53A toward the rear end 53A2, and stops in contact with the rear end 53A2 of the cam surface 53A. In this way, the cam portion 53 transmits the swing of the operation portion 51 to the linear movement engagement portion 20 via the cam surface 53A and the abutment projection 23A of the abutment portion 23, so that the linear movement engagement portion 20 linearly moves from the engagement position to the spaced position. As a result, the lock mechanism 5 is switched from the locked state to the unlocked state.

When the manual operation is not received by the operation unit 51 in the state shown in fig. 6 (b), the linear motion engagement unit 20 biased by the biasing spring 39 moves linearly from the spaced position to the engagement position as shown in fig. 6 (a). As a result, the lock mechanism 5 is switched from the unlocked state to the locked state. At this time, the contact projection 23A of the linear movement engagement portion 20 slides from the rear end 53A2 of the cam surface 53A toward the front end 53A1 while pressing the cam surface 53A leftward, and stops in a state of being in contact with the front end 53A1 of the cam surface 53A. In this way, the cam portion 53 transmits the linear movement of the linear movement engagement portion 20 toward the engagement position to the operation portion 51 via the abutment projection 23A of the abutment portion 23 and the cam surface 53A, and returns the operation portion 51 to the original position.

Further, as shown by the solid line in fig. 3, when cleaning tub 7 and door body 70 are slid rearward of housing 9 without manually operating operation unit 51 from the state in which cleaning tub 7 and door body 70 are slid forward from housing 9, and cleaning tub 7 is returned to the storage position as shown by the two-dot chain line in fig. 3, cap 25 of linear movement engaging unit 20 is pressed rightward while being in sliding contact with the right end of side end edge 91. As a result, the linear movement engaging portion 20 linearly moves toward the spaced position against the biasing force of the biasing spring 39, and the cap 25 moves to a position rearward of the engaged portion 95 and is biased by the biasing spring 39 to return to the engaging position. At this time, the contact projection 23A of the contact portion 23 is temporarily separated to the right from the front end 53A1 of the cam surface 53A, and therefore the operation portion 51 does not swing.

Nozzle and pump

As shown in fig. 1, the dish washing machine 1 further includes a nozzle 61 and a pump 62. The nozzle 61 and the pump 62 are examples of the "cleaning device" of the present invention. The nozzle 61 is disposed in the cleaning tank 7. Pump 62 is assembled below water storage portion 7P of washing tub 7. The nozzle 61 and the pump 62 move together with the cleaning tank 7 when the cleaning tank 7 slides with respect to the housing 9.

Nozzle 61 can spray washing water into washing tub 7 from a plurality of spray holes. In order to reliably wash a plurality of dishes TW1 stacked in washing tub 7 or wash the inner wall surface of washing tub 7 or dish basket 7C, the spraying direction of nozzle 61 may be changed to various directions.

When pump 62 is operated in the normal direction, the cleaning water stored in water storage portion 7P of cleaning tub 7 is supplied to nozzle 61 and sprayed into cleaning tub 7. Since the sprayed washing water is stored in the water storage portion 7P, the washing water can be repeatedly supplied to the nozzle 61 by the pump 62. When pump 62 performs the reverse rotation operation, the washing water in washing tub 7 can be discharged to the outside of dishwasher 1 through residual filter 67 and drain pipe P2.

Heater, temperature sensor, drying fan, and water level sensor

The dish washing machine 1 further includes: a heater 63, a drying fan 68, a temperature sensor 31, and a water level sensor 34.

As shown in fig. 1, heater 63, drying fan 68, temperature sensor 31, and water level sensor 34 are also assembled to washing tub 7, and move together with washing tub 7 when washing tub 7 slides with respect to housing 9.

The heater 63 is disposed at the bottom of the water storage portion 7P. Heater 63 heats the cleaning water stored in water storage portion 7P of cleaning tub 7 or the air in cleaning tub 7.

By rotating drying fan 68 with heater 63 operating, heated air can be sent into washing tub 7 to dry tableware TW 1. The air sent into washing tub 7 by drying fan 68 is discharged to the outside of dishwasher 1 through exhaust passage 7E.

The temperature sensor 31 is provided at a position below the heater 63 in the bottom of the water storage portion 7P. Temperature sensor 31 is located near heater 63 and monitors the temperature of the cleaning water stored in water storage unit 7P of cleaning tub 7 or the air in cleaning tub 7.

The water level sensor 34 is a float sensor provided in a water level monitoring tank 34A, and the water level monitoring tank 34A is disposed beside the water storage portion 7P of the washing tub 7. Water level monitoring tank 34A is connected to water storage unit 7P of washing tank 7 via communication pipe P3. The water level sensor 34 is used to monitor the level of the washing water in the washing tub 7.

Control unit and input/output unit

The dish washing machine 1 further includes: a control unit C1 and an input/output unit 40. The control portion C1 is disposed at a position of the door 70 that is lower than the door protruding portion 78 and the door upper surface cover 79. The input/output unit 40 is disposed on the upper surface of the door body protrusion 78. The controller C1 and the input/output unit 40 move together with the cleaning tank 7 when the cleaning tank 7 slides relative to the housing 9.

The control unit C1 is an electronic circuit unit including a CPU, a memory including storage elements such as ROM and RAM, an interface circuit that transmits and receives signals to and from a control target, a power supply circuit that controls power supply to the control target, and the like. The memory stores: programs and setting information for operating the dishwasher 1.

The controller C1 controls and operates the nozzle 61, the pump 62, the heater 63, and the drying fan 68, and receives monitoring signals from the temperature sensor 31, the water level sensor 34, and the lock sensor 38. The control unit C1 receives a monitoring signal from a sensor not shown, which includes, for example: a position sensor for monitoring whether the washing tub 7 is in the storage position.

As shown in fig. 3, the operation unit 40 includes: a plurality of knobs not shown for the user to perform input operations. Further, the display unit 47 includes: a display panel capable of displaying numbers, characters, and the like for transmitting various information to a user. The input/output unit 40 transmits the user's input operation to the control unit C1, and displays the information transmitted from the control unit C1.

As shown in fig. 1, in a state where the washing tub 7 is in the storage position, the entire input/output unit 40 is shielded by a ceiling CT1 of the built-up kitchen. This prevents the user from operating and visually confirming the input/output unit 40. As shown in fig. 2, when washing tub 7 and door 70 slide forward from casing 9, the entire input/output unit 40 moves forward from top panel CT1 of the built-up kitchen, and the user can operate and visually confirm input/output unit 40.

Cleaning action

According to the dish washing machine 1 configured as described above, the washing operation is performed in the following order. That is, since tableware TW1 to be washed is stored in washing tub 7, when a user inserts his/her hand into recessed portion 78D of door body protruding portion 78 and grips the front end of operation portion 51 while pushing it upward, linear movement engagement portion 20 linearly moves from the engagement position shown in fig. 6 (a) to the spaced position shown in fig. 6 (b), and lock mechanism 5 is switched from the locked state to the unlocked state. As a result, the user can slide washing tub 7 and door 70 forward from case 9.

Then, dish TW1 is stored in washing tub 7 pulled out by the user, and after the start of the washing operation is instructed by operating input/output unit 40, door 70 is pushed backward, and washing tub 7 is slid toward the storage position shown in fig. 1.

Then, the cap 25 of the linear movement engagement portion 20 is pressed rightward while being in sliding contact with the right end of the side end edge 91. As a result, the linear movement engaging portion 20 linearly moves toward the spaced position against the biasing force of the biasing spring 39, and the cap 25 moves to a position rearward of the engaged portion 95 and is biased by the biasing spring 39 to return to the engaging position. As a result, the lock mechanism 5 is switched from the unlocked state to the locked state. At this time, since the abutment projection 23A of the abutment portion 23 is separated from the cam surface 53A only temporarily, the operation portion 51 does not swing, and therefore, generation of abnormal noise from the operation portion 51 can be suppressed.

Further, the control unit C1 monitors that the cleaning tank 7 is in the storage position by a position sensor not shown, and that the linear movement engagement unit 20 is in the engagement position by the lock sensor 38, and executes the following operations on the condition that the monitoring is performed: and a washing operation of spraying washing water from nozzle 61 into washing tub 7 by operating nozzle 61 and pump 62. Then, controller C1 appropriately operates heater 63 and drying fan 68 in accordance with the progress of the washing operation, cleans dish TW1 in washing tub 7, and then dries dish TW1, thereby ending the washing operation.

Effect of action

According to the dishwasher 1 of the embodiment, in the state where the door 70 is at the closing position shown in fig. 1, as shown in fig. 6 (a), the linearly moving engaging portion 20 that is urged by the urging spring 39 to be linearly moved to the engaging position engages with the engaged portion 95, and thereby the lock mechanism 5 is switched to the locked state. On the other hand, as shown in fig. 6 (b), the operation portion 51 is swung in the operation direction R1 in response to the manual operation, and the linear movement engagement portion 20 is linearly moved to the spaced position by the cam portion 53, whereby the lock mechanism 5 is switched to the unlocked state.

Here, according to the dishwasher 1, the cam portion 53 swings integrally with the operation portion 51, and the linear motion engagement portion 20 linearly moves accordingly. The occupied space for the linear motion engaging portion 20 to perform linear motion between the engaging position and the spaced position (particularly, the occupied space in the front-rear direction and the vertical direction) can be smaller than: the engagement portion of the conventional dishwasher occupies a space for swinging between the engagement position and the isolation position.

Specifically, in the dishwasher 1, as shown in fig. 1 to 3, the lock mechanism 5 does not protrude rearward of the door body protrusion 78 and above the door body upper surface cover 79.

Therefore, according to the dishwasher 1 of the embodiment, the lock mechanism 5 can be reduced in space. Further, the occupied space for the linear movement of linear movement engagement portion 20 (especially, the occupied space in the front-rear direction and the vertical direction) can be made small, and the internal space for washing tableware TW1, which can be divided by washing tub 7, can be made large.

In the dishwasher 1, as shown in fig. 5 and 6, the linear motion engagement portion 20 linearly moves in the linear motion direction along the swing axis X50. The cam portion 53 includes a cam surface 53A extending from one end 53A1 to the other end 53A 2. The cam surface 53A is: a curved surface extending along the circumferential direction of the pivot axis X50 toward the right side opposite to the engaged portion 95 in the linear motion direction. In addition, the cam surface 53A is formed such that: the operating portion 51 is separated to the right from the engaged portion 95 in the linear motion direction as it swings in the operating direction R1. The linear motion engagement portion 20 includes an abutment portion 23. The contact portion 23 can contact the cam surface 53A from the right side, which is the opposite side to the engaged portion 95 in the linear motion direction, by the contact protrusion 23A. With such a specific configuration, the occupied space for the linear motion engaging portion 20 to perform linear motion between the engaging position and the spaced position can be further reduced. Further, according to this configuration, even if the cap 25 slides on the side edge 91 when the cleaning tank 7 is returned to the storage position, the linearly moving engagement portion 20 is linearly moved toward the spaced position temporarily, the contact projection 23A of the contact portion 23 is temporarily separated from the cam surface 53A only, and the operation portion 51 does not swing. As a result, in the dish washing machine 1, the occurrence of abnormal noise in the operation unit 51 can be suppressed.

In the dish washing machine 1, as shown in fig. 3, the engaged portion 95 is provided with: a side edge 91 extending in the vertical direction on the left side among the inner peripheral edges of the housing opening 9H. The linear motion direction of the linear motion engagement portion 20 is the left-right direction. The door 70 includes a door opening 70H, and the door opening 70H is provided in: and a side surface 71 facing the engaged portion 95 in the closed position. Then, the linear movement engagement portion 20 is moved to the engagement position, and protrudes from the door opening 70H, and can be engaged with the engaged portion 95. When the user moves the door 70 to the open position, the user hardly sees the side face 71 of the door 70. Thus, according to this configuration, it is difficult for the user to visually recognize the door opening 70H provided in the side face 71 of the door 70 and the linear movement engagement portion 20 protruding from the door opening 70H, and therefore, the appearance can be improved.

In the dishwasher 1, the linear motion engagement portion 20 includes: the linear motion engagement portion main body 21 and the contact portion 23 are formed as flat plate members. The operation portion 51 and the cam portion 53 are integrally formed. With such a specific configuration, the occupied space for the linear motion engaging portion 20 to perform linear motion between the engaging position and the spaced position can be further reduced. Further, since the plate member on which the linear motion engagement portion main body 21 and the abutting portion 23 are formed is made of metal, the linear motion engagement portion 20 that achieves a required strength can be easily manufactured by punching or pressing a metal plate. Further, since the operation portion 51 and the cam portion 53 are integral members made of resin, the operation portion 51 and the cam portion 53 having complicated shapes can be easily manufactured by injection molding or the like. As a result, the manufacturing cost can be reduced.

In the dish washing machine 1, as shown in fig. 4 and 6, the lock mechanism 5 includes a lock sensor 38. The door body 70 has a support frame 10. Further, the support frame 10 is integrally formed with: guide portions 12A and 12B for guiding the linear motion engagement portion 20 in the linear motion direction, and a holding portion 18 for holding the lock sensor 38. According to this configuration, since the operation unit 51 is supported by the support frame 10 and the guide portions 12A and 12B formed in the support frame 10 guide the linear motion of the linear motion engagement portion 20 in the linear motion direction, it is possible to suppress variation in the positional relationship between the cam portion 53 that swings integrally with the operation unit 51 and the linear motion engagement portion 20. As a result, it is possible to smoothly perform: the cam portion 53 transmits the swing of the operation portion 51 to the linear motion engagement portion 20 to linearly move the linear motion engagement portion 20. Further, since the guide portions 12A, 12B and the holding portion 18 are formed integrally with the support frame 10, if it is assumed that one of the guide portions 12A, 12B and the holding portion 18 is formed on the support frame 10 and the other of the guide portions 12A, 12B and the holding portion 18 is formed on a member different from the support frame 10, and then they are assembled, the configuration of the present invention can suppress: the deviation of the positional relationship between the sensor pressing portion 28 of the linear movement engaging portion 20 guided by the guide portions 12A and 12B and the monitoring projection 38A of the lock monitoring mechanism 38 held by the holding portion 18. As a result, the lock sensor 38 can accurately monitor whether or not the linear motion engagement portion 20 is in the engagement position. Further, the guide portions 12A and 12B, the holding portion 18, and the spring locking portion 19 are integrally formed in the support frame 10 made of resin that supports the operation portion 51, so that the number of components can be reduced, and therefore, the manufacturing cost can be reduced.

As described above, although the present invention has been described with reference to the embodiments, the present invention is not limited to the embodiments, and it goes without saying that the present invention can be applied by appropriately changing the embodiments without departing from the spirit thereof.

In the embodiment, the operation portion 51 and the cam portion 53 are an integral member, but the present invention is not limited to this configuration. For example, the cam portion may be a separate component and may be assembled to the operation portion.

In the embodiment, the linear movement direction of the linear movement engaging portion 20 is the left-right direction, but the present invention is not limited to this configuration. For example, the linear motion direction of the linear motion engagement portion may be the vertical direction.

In the embodiment, although in the lock mechanism 5, the engaged portion 95 is provided: the side edge 91 extending in the vertical direction on the left side among the inner peripheral edges of the housing opening 9H is provided with 1 set of the linear movement engaging portion 20 and the cam portion 53 corresponding to the engaged portion 95, but the present invention is not limited to this configuration. For example, similarly to the engaged portion 95, another 1 set of the linear movement engaging portion and the cam portion may be provided in the same manner as the linear movement engaging portion 20 and the cam portion 53 corresponding to the engaged portion, while the engaged portion is also provided at the side end edge extending in the vertical direction on the right side among the inner peripheral edges of the housing opening 9H.

In the embodiment, although dishwasher 1 is a drawer type dishwasher in which door 70 is slid forward from casing 9 together with washing tub 7, the present invention is not limited to this configuration. For example, the present invention also includes a front opening type dishwasher in which only the door body is pulled down forward.