阅读说明：本技术 带顶板倾斜功能的桌子 (Table with top plate tilting function ) 是由 千田启资 森永祐辅 泷野达也 善田阳一 于 2019-09-05 设计创作，主要内容包括：在能够将顶板锁定在预定角度以下的任意的倾斜角度、能够通过使该顶板超过所述预定角度地倾斜来解除该锁定的带顶板倾斜功能的桌子中,消除在欲在能够锁定的顶板使用区域的上限附近锁定顶板时容易导致误操作这样的课题。对能够将顶板(5)锁定在预定角度(α)以下的任意的倾斜角度、能够通过使该顶板(5)超过所述预定角度(α)地倾斜来解除该锁定、能够维持该锁定解除状态直到所述顶板(5)返回到原来的初始角度(γ)的带顶板倾斜功能的桌子(D)采用如下的构成：具备用于使所述顶板(5)在到达了所述预定角度(α)的位置暂且停止的停止机构(8)。(In a table with a top plate tilting function, which can lock a top plate at an arbitrary tilting angle equal to or less than a predetermined angle and can release the locking by tilting the top plate beyond the predetermined angle, a problem that an erroneous operation is easily caused when the top plate is to be locked in the vicinity of the upper limit of a use area of the top plate that can be locked is solved. A table (D) with a top plate tilting function, which can lock a top plate (5) at an arbitrary tilt angle equal to or less than a predetermined angle (alpha), can release the locking by tilting the top plate (5) beyond the predetermined angle (alpha), and can maintain the unlocked state until the top plate (5) returns to the original initial angle (gamma), is configured as follows: a stop mechanism (8) is provided for temporarily stopping the top plate (5) at a position where the top plate reaches the predetermined angle (alpha).)

1. A table with a top plate tilting function, capable of locking a top plate at an arbitrary tilt angle equal to or smaller than a predetermined angle, releasing the locking by tilting the top plate beyond the predetermined angle, maintaining the unlocked state until the top plate returns to an original initial angle,

the table with the top plate tilting function includes a stop mechanism for temporarily stopping the top plate at a position where the top plate reaches the predetermined angle.

2. The table with top plate tilting function according to claim 1,

the top board is supported by the table main body in a state of being capable of tilting over a top board use area from the initial angle to the predetermined angle and a lock release area having a larger inclination than the predetermined angle,

the stop mechanism includes an elastic body that elastically biases the top plate in a direction in which the inclination angle decreases only in the lock release region.

3. The table with top plate tilting function according to claim 2,

the stop mechanism includes a pair of members that perform a relative operation in accordance with a tilting operation of the top plate, a 1 st colliding body provided to one of the pair of members, and a 2 nd colliding body provided to the other of the pair of members and forcibly stopped at a predetermined waiting position on the other member by an urging force of the elastic body, and is configured such that the 1 st colliding body is separated from the 2 nd colliding body in the top plate use region, the two colliding bodies abut in a state where the top plate reaches the predetermined angle, and the 2 nd colliding body is relatively pressed by the 1 st colliding body in the lock release region and is separated from the predetermined waiting position while overcoming an elastic urging force of the elastic body.

4. The table with top plate tilting function according to claim 2,

the stop mechanism includes a pair of members whose opposing separation distance increases as the inclination angle of the top plate increases, and an elastic body stretched between the two members, and is configured such that tension does not act on the elastic body in the top plate use region, and tension acts on the elastic body throughout the lock release region from the stage when the predetermined angle is reached.

5. The table with top plate tilting function according to claim 1,

the top board is supported by the table main body in a state of being capable of tilting over a top board use area from the initial angle to the predetermined angle and a lock release area having a larger inclination than the predetermined angle,

the stop mechanism includes a pair of members that perform a relative motion in accordance with a tilting motion of the top plate, a cam groove provided in one of the pair of members, and a cam follower provided in the other of the pair of members, and the cam groove includes a tilt allowing portion that guides the cam follower in the top plate use area, an engaging portion that engages with the cam follower when the top plate reaches the predetermined angle, and a lock releasing portion that guides the cam follower in the lock releasing area.

6. The table with top plate tilting function according to claim 1,

the top board is supported by the table main body in a state of being capable of tilting over a top board use area from the initial angle to the predetermined angle and a lock release area having a larger inclination than the predetermined angle,

the stop mechanism includes a pair of members that perform relative movement in accordance with a tilting movement of the top plate, a fixed installation body that is fixedly provided to one of the pair of members, a locking body that is provided to the other of the pair of members and is movable between a locking position where the locking body can be brought into contact with the fixed installation body and a retracted position where the locking body cannot be brought into contact with the fixed installation body, and a push-type latch mechanism that selectively holds the locking body at either one of the locking position and the retracted position.

7. The table with top plate tilting function according to claim 1,

the top board is supported by the table main body in a state of being capable of tilting over a top board use area from the initial angle to the predetermined angle and a lock release area having a larger inclination than the predetermined angle,

the stop mechanism includes a pair of members that perform relative movement in accordance with the tilting movement of the top plate, a movable stopper provided to one of the pair of members so as to be capable of changing its posture, and an engaging body provided to the other of the pair of members so as to engage with the movable stopper, the engaging body includes a stopper guide portion that guides the movable stopper in the top plate use area, an engaging portion that engages the movable stopper when the predetermined angle is reached, a stopper receiving portion that receives the movable stopper while changing the posture of the movable stopper in the lock release area, and a posture correcting portion that guides the movable stopper to the stopper guide portion while changing the posture of the movable stopper in the stopper receiving portion when the top plate is returned from the lock release area to the top plate use area.

Technical Field

The present invention relates to a table with a top board tilting function that can lock a top board at a desired angular position.

Background

Conventionally, as such a table, a table with a tilt function is known as follows: the top plate is locked at an arbitrary tilt angle equal to or smaller than a predetermined angle by a ratchet mechanism, and the locking is released when the top plate is larger than the predetermined angle (see, for example, patent document 1).

That is, in such a table, the top plate can be locked at an arbitrary tilt angle equal to or smaller than a predetermined angle by the tilt lock mechanism using the ratchet, and the lock can be released by tilting the top plate beyond the predetermined angle, and the lock released state can be maintained until the top plate returns to the original initial angle.

However, in such a configuration, there is a problem that it is difficult to lock the top plate at an inclination angle close to the predetermined angle. Specifically, if the top plate is gradually tilted from an initial angle of horizontal or nearly horizontal, the top plate is intermittently locked by, for example, the action of a ratchet mechanism or the like, and if the hand is released at a desired tilt angle, the locking is completed at a position near the lock position. However, the conventional configuration cannot recognize whether or not the top plate reaches the predetermined angle by the user. Therefore, it may also happen that the top plate is operated beyond a predetermined angle.

If the roof panel is erroneously operated to exceed the predetermined angle against the intention, the lock release state is maintained, and the roof panel needs to be returned to the original angle and operated again from the beginning.

Disclosure of Invention

Problems to be solved by the invention

The present invention is intended to solve the above-described problem, i.e., the problem that an erroneous operation is likely to occur when the top panel is to be locked near the upper limit of the lockable top panel use region.

Means for solving the problems

The table with a top board tilting function according to the invention described in claim 1 can lock the top board at an arbitrary tilt angle equal to or smaller than a predetermined angle, and can release the lock by tilting the top board beyond the predetermined angle, and can maintain the unlocked state until the top board returns to the original initial angle.

In the present invention, "stop" refers to the following concept: the case of completely stopping the motion is also included, and the case of applying resistance to suppress the motion is also included.

According to the table with a top board tilt function described in claim 1, in the table with a top board tilt function described in claim 2, the top board is supported by the table main body in a state in which the top board can tilt (tilt) over a top board use region from the initial angle to the predetermined angle and a lock release region having a tilt larger than the predetermined angle, and the stop mechanism includes an elastic body that elastically biases the top board in a tilt angle decreasing direction only in the lock release region.

The table with a top plate tilting function according to claim 2 is the table with a top plate tilting function according to claim 3 of the invention, wherein the stop mechanism includes a pair of members which perform a relative movement in accordance with a tilting operation of the top plate, a 1 st colliding body (japanese: a breaking body) provided on one of the pair of members, and a 2 nd colliding body which is provided on the other of the pair of members and is forcibly stopped at a predetermined waiting (japanese: waiting) position on the other member by an urging force of the elastic body, the stop mechanism is configured such that the 1 st colliding body is separated from the 2 nd colliding body in the top plate use region, the two colliding bodies abut in a state where the top plate reaches the predetermined angle, and the 2 nd colliding body is relatively pressed by the 1 st colliding body in the lock release region while overcoming an elastic urging force of the elastic body The position is left.

According to the table with a top plate tilting function described in claim 2, in the table with a top plate tilting function of the invention described in claim 4, the stop mechanism includes a pair of members whose relative separation distance increases as the tilting angle of the top plate increases, and an elastic body stretched between the two members, and the stop mechanism is configured such that tension does not act on the elastic body in the top plate use region, and tension acts on the elastic body throughout the lock release region from the time when the predetermined angle is reached.

According to the table with a top plate tilting function described in claim 1, in the table with a top plate tilting function of the invention described in claim 5, the top plate is supported by a table main body in a state of being tiltable over a top plate use area from the initial angle to the predetermined angle and a lock release area having a larger inclination than the predetermined angle, the stop mechanism includes a pair of members that perform a relative motion in accordance with a tilting motion of the top plate, a cam groove provided in one of the pair of members, and a cam follower provided in the other of the pair of members, the cam groove includes a tilt allowing portion that guides the cam follower in the top plate use area, an engaging portion that engages with the cam follower when the top plate reaches the predetermined angle, and a lock release portion that guides the cam follower in the lock release area of the top plate And (4) a section.

According to the table with a top plate tilting function described in claim 1, in the table with a top plate tilting function of the invention described in claim 6, the top plate is supported by the table main body in a state of being tiltable over a top plate use region from the initial angle to the predetermined angle and a lock release region having a larger tilt than the predetermined angle, the stop mechanism includes a pair of members that perform a relative motion in accordance with the tilting motion of the top plate, a fixed installation body fixedly provided to one of the pair of members, a locking body provided to the other of the pair of members and movable between a locking position where the locking body can be brought into contact with the fixed installation body and a retracted position where the locking body cannot be brought into contact with the fixed installation body, and a push latch (push latch) mechanism that selectively holds the locking body at either one of the locking position and the retracted position, the stop mechanism is configured such that the fixed installation body abuts against and is locked to the locking body at the predetermined angle, and the locking state is released, whereby the push-type latch mechanism retracts the locking body to the retracted position, and the tilting of the top plate to the unlock region can be allowed.

According to the table with a top plate tilting function described in claim 1, in the table with a top plate tilting function described in claim 7, the top plate is supported by a table main body in a state capable of tilting over a top plate use region from the initial angle to the predetermined angle and a lock release region having a tilt larger than the predetermined angle, the stop mechanism includes a pair of members that perform a relative movement in accordance with the tilting movement of the top plate, a movable stopper (japanese: can be limited コマ) provided in one of the pair of members so as to be capable of changing a posture, and an engaging body provided in the other of the pair of members so as to engage with the movable stopper, the engaging body includes a guide portion that guides the movable stopper in the top plate use region, and an engaging portion that engages with the movable stopper when the movable stopper reaches the predetermined angle, A stopper receiving portion that receives the movable stopper while changing the posture of the movable stopper in the lock release region, and a posture correction portion that guides the movable stopper to a stopper guide portion while changing the posture of the movable stopper in the stopper receiving portion when returning the top plate from the lock release region to the top plate use region.

ADVANTAGEOUS EFFECTS OF INVENTION

According to the present invention, it is possible to provide a table with a top board tilting function as follows: whether or not the top plate reaches a predetermined angle relating to the unlocking can be recognized, and the top plate can be easily locked at a desired angular position without causing an erroneous operation.

Drawings

Fig. 1 is an overall perspective view illustrating a table according to a first embodiment of the present invention.

Fig. 2 is a side sectional view showing a main part of the table of the embodiment.

Fig. 3 is an explanatory view of the operation of the table of this embodiment.

Fig. 4 is an exploded perspective view showing the table of the embodiment.

Fig. 5 is an explanatory view of the operation of the stop mechanism of the table according to the embodiment.

Fig. 6 is an explanatory view of the operation of the stop mechanism of the table according to the embodiment.

Fig. 7 is an explanatory view of the operation of the stop mechanism of the table according to the embodiment.

Fig. 8 is an explanatory view of the operation of the stop mechanism of the table according to the embodiment.

Fig. 9 is a side sectional view showing a main part of a table according to a second embodiment of the present invention.

Fig. 10 is an explanatory view of the operation of the stop mechanism of the table according to the embodiment.

Fig. 11 is an explanatory view of the operation of the stop mechanism of the table according to the embodiment.

Fig. 12 is a side sectional view showing a main part of a table according to a third embodiment of the present invention.

Fig. 13 is an explanatory view of the operation of the stop mechanism of the table according to the embodiment.

Fig. 14 is an explanatory view of the operation of the stop mechanism of the table according to the embodiment.

Fig. 15 is an explanatory view of the operation of the stop mechanism of the table according to the embodiment.

Fig. 16 is an explanatory view of the operation of the stop mechanism of the table according to the embodiment.

Fig. 17 is an explanatory view of the operation of the stop mechanism of the table according to the embodiment.

Fig. 18 is an explanatory view of the operation of the stop mechanism of the table according to the embodiment.

Fig. 19 is a side sectional view showing a main part of a table according to a fourth embodiment of the present invention.

Fig. 20 is an explanatory view of the operation of the stop mechanism of the table according to the embodiment.

Fig. 21 is an explanatory view of the operation of the stop mechanism of the table according to the embodiment.

Fig. 22 is an explanatory view of the operation of the stop mechanism of the table according to the embodiment.

Fig. 23 is an explanatory view of the operation of the stop mechanism of the table according to the embodiment.

Fig. 24 is a side sectional view showing a main part of a table according to a fifth embodiment of the present invention.

Fig. 25 is an explanatory view of the operation of the stop mechanism of the table according to the embodiment.

Fig. 26 is an explanatory view of the operation of the stop mechanism of the table according to the embodiment.

Fig. 27 is an explanatory view of the operation of the stop mechanism of the table according to the embodiment.

Fig. 28 is an explanatory view of the operation of the stop mechanism of the table according to the embodiment.

Description of the reference numerals

D. Table with top plate tilting function from D2 to D5 …

5 … Top Panel

8. W8, X8, Y8, Z8 … stop mechanism

Alpha … predetermined angle

Initial angle of gamma …

Detailed Description

< first embodiment >

A first embodiment of the present invention will be described with reference to fig. 1 to 8.

As shown in fig. 1, the table D of this embodiment has a pair of use areas A, B arranged face to face.

One use area a is formed between the left leg 1L and the right leg 1R, and as shown in fig. 1 and 4, the legs 1L and 1R are connected by 2 cross members 2 and 3, and a top plate 5 and a sub-top plate 6 disposed beside the top plate 5 are provided between the legs 1L and 1R. The top panel 5 is supported by the table main body DD in a state of being tiltable over a top panel use region R1 that extends from the initial angle γ to the predetermined angle α and a lock release region R2 that is inclined at a larger angle than the predetermined angle α. As shown in fig. 3 and 4, the side end portions 6a of the sub-roof 6 on the roof 5 side are supported by the intermediate vertical frame 4 supported by the left and right legs 1L, 1R in a state of floating from the floor surface F. The intermediate vertical frame 4 serves to support the top plate 5 and the sub-top plate 6, and is supported by the legs 1L and 1R via the cross members 2 and 3, as shown in fig. 4. That is, in this table D, the top plate 5 is tiltably supported by a table main body DD configured by mainly including the left and right legs 1L, 1R, the front and rear cross members 2, 3, and the intermediate vertical frame 4. The details will be described below.

As shown in fig. 4, each of the left and right legs 1L and 1R is a portal member including a pair of front and rear leg stays 11 and a vertical frame 12 spanning between upper ends of the leg stays 11, and an adjuster 13 is provided at a lower end of each leg stay 11. As shown in fig. 4, 2 cross members 2 and 3 are erected in parallel with a space in the front-rear direction between the legs 1L and 1R, and the intermediate vertical frame 4 is supported by the cross members 2 and 3.

As shown in fig. 4, the front cross member 2 is a square tubular member located between the front end and the back end of the use area a and bridging between the legs 1L and 1R.

As shown in fig. 8, the rear cross member 3 is a square tubular member located near the inner end in the use area a and bridging between the legs 1L, 1R.

As shown in fig. 4, the intermediate vertical frame 4 includes a cantilever support 41 (japanese: piece support ち receiving け) extending forward from the front cross member 2, and a both-end support 42 (japanese: support ち receiving け) rigidly connecting the front cross member 2 and the rear cross member 3 at left and right positions corresponding to the cantilever support 41. At the extended end of the cantilever support 41, a right tilt hinge 52 is provided, which will be described later.

The top plate 5 is tiltable at least from the initial angle γ to a predetermined angle α, and as shown in fig. 2 and 3, a left side end portion 5a of the top plate 5 is pivotally supported by one leg 1L via a left tilt hinge 51, and a right side end portion 5b is pivotally supported by the middle vertical frame 4 via a right tilt hinge 52. Specifically, as shown in fig. 2 to 4, the top panel 5 includes a top panel main body 53 that can be tilted, and a tray (tray)54 provided on the back side of the top panel main body 53.

The top plate main body 53 is a flat plate-shaped member having a flat top plate surface 53a, and as shown in fig. 2 and 3, a portion near the left end use end 5c is connected to the left leg 1L via the left oblique hinge 51 so as to be tiltable, and a portion near the right end use end 5c is connected to the middle vertical frame 4 via the right oblique hinge 52 so as to be tiltable. As shown in fig. 2, 3, and 5 to 8, the left tilt hinge 51 pivotally connects a fixed portion 511 of the vertical frame 12 fixed to the left leg 1L and a movable portion 512 attached to the lower surface 53b of the top plate main body 53 via a hinge shaft 513. As shown in fig. 4, the right tilt hinge 52 is pivotally connected to a fixed portion 521 provided integrally with the distal end of the arm support 41 in the support structure 4 and a movable portion 522 attached to the lower surface 53b of the top plate main body 53 via a hinge shaft 523.

The sub-roof 6 has a flat roof surface 6s, and as shown in fig. 2 to 4, the side end 6a on the roof 5 side (left side end) is supported by the intermediate vertical frame 4, and the right side end 6b is supported by the right leg 1R.

A tilt lock mechanism 7 for locking the tilt angle of the roof panel 5 in a plurality of stages is provided between the roof panel 5 and the rear cross member 3.

As shown in fig. 2 to 4, the tilt lock mechanism 7 includes a pair of arms 71 and 72 having base end portions 71a and 72a pivotally connected to each other so as to be relatively rotatable, a distal end portion 71b of one arm 71 is pivotally connected to the cross member 3 via a support base 73, and a distal end portion 72b of the other arm 72 is pivotally connected to the lower surface 53b of the top plate 5 via an attachment base 74. A ratchet mechanism, not shown, is incorporated between the base ends 71a and 72a of the arms 71 and 72, and when the top plate 5 is rotated from the horizontal initial angle γ toward the predetermined angle α, the top plate 5 can be locked so as not to tilt downward each time the top plate reaches a plurality of intermediate lock angles β shown in fig. 3. Further, by slightly rotating the top plate 5 upward beyond the predetermined angle α shown in fig. 3, the locked state of the ratchet mechanism is temporarily released, and the top plate 5 can be returned to the initial angle γ shown in fig. 3 at a time. Since the ratchet mechanism that performs such a function is a normal mechanism, a detailed description thereof will be omitted.

In this embodiment, a region from the initial angle γ to the predetermined angle α is referred to as a ceiling use region R1, and a region exceeding the predetermined angle α is referred to as an unlock region R2, and the following description will be given of the stop mechanism 8.

That is, the table D of this embodiment includes a stop mechanism 8 for temporarily stopping the top plate 5 at a position where it reaches the predetermined angle α.

The stop mechanism 8 is provided, for example, in the left tilt hinge 51, and includes a spring 81 as an elastic body that elastically biases the top plate 5 in the tilt angle decreasing direction only in the lock release region R2. That is, the stop mechanism 8 includes a pair of members (the fixed portion 511 and the movable portion 512 of the left tilt hinge 51) that perform relative movement in accordance with the tilting operation of the top plate 5, a 1 st colliding body (specifically, the pin 82) provided to the fixed portion 511, and a 2 nd colliding body (specifically, the rod 83) provided to the movable portion 512 and forcibly stopped at the predetermined waiting position m on the movable portion 512 by the urging force of the spring 81. The stop mechanism 8 is configured such that the pin 82 is separated from the lever 83 in the top plate use region R1, the pin 82 abuts against the lever 83 in a state where the top plate 5 reaches the predetermined angle α, and the lever 83 is relatively pressed by the pin 82 in the lock release region R2 and is separated downward from the predetermined waiting position m against the elastic force of the spring 81.

Specifically, the fixed portion 511 of the tilt hinge 51 is screwed to the left leg 1L, the upper half portion 511a is in a vertically standing flat plate shape, and the front end portion of the movable portion 512 is pivotally connected to the front end portion of the upper half portion 511a via a hinge shaft 513. A pin 82 is provided to protrude from the inner surface of the upper half 511 a.

The movable portion 512 of the tilt hinge 51 has a rising plate 515 parallel to the upper half 511a of the fixed portion 511, and a top plate attachment plate 516 is provided extending inward from the upper edge of the rising plate 515, and the rising plate 515 is pivotally connected to the fixed portion 511 via a hinge shaft 513. The upright plate 515 has a long hole 515a through which the pin 82 of the fixing portion 511 is inserted. The long hole 515a has an arc-shaped long hole shape so that the top panel 5 can tilt over the top panel use region R1 and the lock release region R2. The front end portion 83a of the lever 83 is pivoted to the rising plate 515 via a pivot shaft 84. The lever 83 is disposed so as to intersect the long hole 515a, includes an intermediate striking portion 83b that abuts against the pin 82 at a portion corresponding to the long hole 515a, and has a spring hook portion 83c at a rear end portion. The lever 83 is biased by a spring 81 stretched between the spring hooking portion 83c and a spring hooking pin 811 fixedly provided on the rising plate 515, and the lever 83 is rotated upward. Further, a locking shaft 85 that locks the upward movement of the lever 83 at the predetermined waiting position m is provided projecting from the rising plate 515, and the lever 83 is forcibly stopped at the predetermined waiting position m by the locking shaft 85 and the spring 81. The spring 81 is, for example, a tension coil spring, and is configured to set the lever 83 in advance so as to be able to exert an elastic biasing force even in a state where the lever 83 is forcibly stopped at the predetermined waiting position m. On the other hand, the top plate attachment plate 516 is provided with a screw hole 516a and screwed to the lower surface of the top plate 5.

The other use region B is also formed between the left leg 1L and the right leg 1R, and has a structure point-symmetrical to the one use region a in plan view.

Further, P is a panel P for shielding (japanese: hidden し) disposed at the boundary between the 1 st use area a and the 2 nd use area B. H is a wiring duct (duct) disposed below the panel P and usable from any of the use areas A, B.

Next, the operation of the table D will be described.

In the table D having such a configuration, the top plate 5 can be tilted by hooking and lifting a finger on the finger hooking portion 54a or the like located on the rear end side of the top plate 5. When the tilt angle of the top plate 5 is increased, the lowering of the top plate 5 is prohibited by the operation of the tilt lock mechanism 7 every time the intermediate lock angle β is reached, and therefore, the top plate 5 can be stopped at the appropriate intermediate lock angle β by just taking the hand away at the time when the desired tilt angle is reached. When the top plate 5 is further lifted to a position exceeding the predetermined angle α, the locked state by the tilt lock mechanism 7 is released, and the top plate 5 can be returned to the initial angle γ as the lowest point at a time.

In the table D, the top plate 5 is moved upward from the initial angle γ by the stop mechanism 8 and is temporarily stopped at the stage when the predetermined angle α is reached. That is, when the top plate 5 reaches the predetermined angle α, the pin 82 of the stop mechanism 8 abuts against the intermediate striking portion 83b of the lever 83 forcibly waiting at the predetermined waiting position m, and a large resistance acts at once on the tilting operation of the top plate 5. Therefore, the operator can recognize that the top panel 5 has reached the predetermined angle α, and when the tilting operation is stopped at this stage, the top panel 5 can be locked at the intermediate locking angle β set to the uppermost position. When the top panel 5 is raised beyond the predetermined angle α to the unlock region R2 against the biasing force of the spring 81 from this state, the locked state of the ratchet mechanism of the tilt lock mechanism 7 is temporarily unlocked, and the top panel 5 can be returned to the initial angle γ at a time as in the conventional art. Specifically, when the top panel 5 is moved upward beyond the predetermined angle α, the lever 83 waiting at the predetermined waiting position m is pressed downward by the pin 82, and the top panel 5 is allowed to tilt to the unlocking region R2. Fig. 5 shows a state where the top plate 5 is positioned at the initial angle γ, fig. 6 shows a state where the top plate 5 reaches the predetermined angle α, and fig. 7 and 8 show a state where the top plate 5 enters the unlock region R2. In fig. 5 to 8, only the left tilt hinge 51 provided in association with the stop mechanism 8 is drawn out. In this state, a gap S is formed between the lever 83 and the locking shaft 85. In this embodiment, a region between the maximum tilt angle, which is the top dead center of the tilt of the top plate 5, and the predetermined angle α is referred to as a lock release region R2, and the lock state of the ratchet mechanism of the tilt lock mechanism 7 is set to be released at any position in the lock release region R2.

In the table having such a configuration, when the top board 5 is tilted from the initial angle γ toward the predetermined angle α, the operator recognizes that the top board 5 has reached the upper limit of the top board use region R1 by the operation of the stop mechanism 8 at the stage when the predetermined angle α is reached. Therefore, the intermediate locking angle β set at the uppermost position of the ceiling use region R1 is also easily locked.

Further, since the stop mechanism 8 includes the spring 81 that elastically biases the top plate 5 in the inclination angle decreasing direction only in the unlock region R2, it is easy to set the magnitude of the impact when the predetermined angle α is reached to the optimum magnitude by the tension of the spring 81. In particular, in this embodiment, since the degree of impact is optimized by the preload setting of the spring 81, the operator can clearly recognize that the top plate 5 has reached the predetermined angle α.

Further, as a modification of this embodiment, the following modification is given. For example, in the present embodiment, the stop mechanism 8 is provided in association with only the left tilt hinge 51 side, but the stop mechanism 8 may be provided only on the right tilt hinge 52 side, or the stop mechanism 8 may be provided on both the left and right tilt hinges 51, 52.

Another modification of the first embodiment described above may be a configuration in which the 1 st colliding body (pin) is provided in the movable portion of the tilt hinge, and the 2 nd colliding body (rod) is provided in the fixed portion of the tilt hinge.

< second embodiment >

A second embodiment of the present invention will be described below with reference to fig. 9 to 11. Note that the same or corresponding portions as or to those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

In the first embodiment described above, the stop mechanism 8 is provided in association with the tilt hinge 51 disposed on the near side, but in the table D2 of the second embodiment, as shown in fig. 9, the stop mechanism W8 is provided in association with the tilt lock mechanism 7 which is the mechanism side.

As shown in fig. 9 to 11, the stop mechanism W8 includes a pair of members (specifically, the pivot end portions of the arms 71 and 72 of the tilt lock mechanism 7) whose relative separation distance increases as the tilt angle of the top plate 5 increases, and an elastic body (specifically, a spring W81) provided between the two arms 71 and 72 in a tensioned state, and the stop mechanism W8 is configured such that, as shown in fig. 10, tension does not act on the spring W81 in the top plate use region R1, and as shown in fig. 11, tension acts on the spring W81 throughout the lock release region R2 from the stage when the predetermined angle α is reached.

The spring W81 is, for example, a tension coil spring, and as shown in fig. 9 to 11, one end thereof is connected to the tip end portion 71b of one arm 71 via a wire W82, and the other end thereof is connected to the tip end portion 72b of the other arm 72 via a wire W83. In the state where the top panel 5 is located in the top panel use region R1, as shown in fig. 9 and 10, the lines W82 and W83 are in a relaxed state, and tension is set so as not to act on the spring W81, and at the stage where the top panel 5 is located at the predetermined angle α and the lock release region R2, as shown in fig. 11, the lines W82 and W83 are in a tensioned state, and an elastic biasing force by the spring W81 is generated. Fig. 9 to 11 show the tilt lock mechanism 7 provided in association with the stop mechanism W8, and the cross beam 3 and the ceiling plate 5 behind the tilt lock mechanism 7.

Even in the table having such a configuration, when the top panel 5 is tilted from the initial angle γ toward the predetermined angle α, the operator recognizes that the top panel 5 has reached the upper limit of the top panel use region R1 by the operation of the stop mechanism W8 at the stage when the predetermined angle α is reached. Therefore, the intermediate locking angle β set at the uppermost position of the ceiling use region R1 is also easily locked.

Further, since the stop mechanism W8 includes the spring W81 that elastically biases the top plate 5 in the inclination angle decreasing direction only in the unlock region R2, the magnitude of the impact when the predetermined angle α is reached can be set to an optimum magnitude by selecting the spring W81.

In addition, if the stop mechanism W8 is provided, the number of parts is small, the implementation is easy, and the desk can be relatively easily attached to an existing desk without the stop mechanism.

< third embodiment >

A third embodiment of the present invention will be described below with reference to fig. 12 to 18. Note that the same or corresponding portions as or to those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

The stop mechanism X8 of the third embodiment is provided on the right and left tilt hinges 51, 52 arranged on the front side. Here, the stop mechanisms X8 provided in association with the left and right tilt hinges 51 and 52 are arranged in bilateral symmetry and have the same configuration. Hereinafter, the stop mechanism X8 provided in association with the left tilt hinge 51 will be described specifically as a representative example.

As shown in fig. 12, the stop mechanism X8 includes a pair of members (specifically, the fixed portion 511 and the movable portion 512 of the tilt hinge 51) that perform relative movement in association with the tilting movement of the top plate 5, a cam groove X81 provided in the movable portion 512, and a cam follower X82 provided in the fixed portion 511, and the cam groove X81 includes a tilt allowing portion X81a that guides the cam follower X82 in the top plate use region R1, a locking portion X81b that temporarily locks the cam follower X82 when the top plate 5 reaches the predetermined angle α, and a lock releasing portion X81c that guides the cam follower X82 in the lock releasing region R2.

As shown in fig. 12 to 18, the inclination allowance portion X81a of the cam groove X81 is a member having an arc-shaped long hole shape centering on the axial center of the hinge shaft 513, and the cam follower X82 having a shaft shape moves in the inclination allowance portion X81a in the vertical direction in accordance with the inclination of the top plate 5. The locking portion X81b is formed at the lower end of the inclination allowing portion X81 a. The unlocking portion X81c is continuous with the lower end portion of the tilt allowing portion X81a and provided on the front side of the tilt allowing portion X81a, and the cam follower X82 locked to the locking portion X81b moves forward relatively to move to the upper end portion of the unlocking portion X81 c. A structure for relatively moving the cam follower X82 locked to the locking portion X81b forward is provided in the tilt hinge 51. That is, the hinge shaft 513 fixed to the movable portion 512 moves forward and backward in the long hole 511X provided in the fixed portion 511, and the cam follower X82 moves forward and backward relative to the cam groove X81.

The operation of the table D3 according to this embodiment will be described below. When the top plate 5 is tilted from the initial angle γ toward the predetermined angle α, the stop mechanism X8, specifically, the cam follower X82 abuts against and is locked to the locking portion X81b of the cam groove X81 at the stage when the top plate reaches the predetermined angle α, and the operator recognizes that the top plate 5 has reached the upper limit of the top plate use region R1. When the top plate 5 is tilted further upward from the predetermined angle α, the cam follower X82 is guided by the edge of the locking portion X81b of the cam groove X81, and the entire top plate 5 slightly slides rearward. As a result, the cam follower X82 is guided to the unlocking portion X81c of the cam groove X81, and the tilt of the top plate 5 to the unlocking region R2 is allowed, whereby the lock of the tilt lock mechanism 7 is released. Fig. 13 is a view of the tilt hinge 51 in a state where the top plate 5 is positioned at the initial angle γ as viewed from the inside, and fig. 14 is a view of the tilt hinge 51 in this state as viewed from the inside. Fig. 15 is a view of the tilt hinge 51 in a state where the top plate 5 is positioned at the predetermined angle α as viewed from the inside, and fig. 16 is a view of the tilt hinge 51 in this state as viewed from the inside. Fig. 17 is a view of the tilt hinge 51 in a state where the top panel 5 enters the unlock region R2 and reaches the maximum tilt angle, and fig. 18 is a view of the tilt hinge 51 in this state, as viewed from the inside.

In the table having such a configuration, since the operator recognizes that the top plate 5 has reached the upper limit of the top plate use region R1 by the cam follower X82 abutting against and being locked in the locking portion X81b of the cam groove X81, even if the operator strongly performs the tilting operation, it is possible to more reliably prevent the error from exceeding the predetermined angle α, and to easily lock the intermediate locking angle β set at the uppermost position of the top plate use region R1.

In addition, as a modification of this embodiment, a cam groove is provided in the fixed portion, and a cam follower is provided in the movable portion.

< fourth embodiment >

A fourth embodiment of the present invention will be described below with reference to fig. 19 to 23. Note that the same or corresponding portions as or to those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

The stop mechanism Y8 of the fourth embodiment is provided in association with the tilt hinge 51 disposed on the front side, as in the first embodiment.

As shown in fig. 19 to 23, the stop mechanism Y8 includes a pair of members (specifically, the fixed portion 511 and the movable portion 512 of the tilt hinge 51) that are relatively movable in accordance with the tilting operation of the top plate 5, a fixed installation body (the upper fixed installation pin 81) fixedly provided to the fixed portion 511 of the tilt hinge 51, a locking body Y82 provided to the movable portion 512 of the tilt hinge 51 and movable between a locking position k where the locking body Y82 can be brought into contact with the upper fixed installation pin Y81 and a retracted position t where the locking body Y82 cannot be brought into contact with the fixed installation pin Y81, and a push-type latch mechanism Y83 that selectively holds the locking body Y82 at either the locking position k or the retracted position t, the stop mechanism Y8 is configured such that a fixed installation pin Y81 above a predetermined angle α abuts against and is locked to a locking body Y82, and by releasing the locked state, thus, the locking body Y82 is retracted to the retracted position t by the push latch mechanism Y83, and tilting of the ceiling 5 to the unlock region R2 can be permitted.

The upper fixing pin Y81 protrudes from the fixing portion 511 of the tilt hinge 51 and penetrates through the long hole 512a provided in the movable portion 512. The long hole 512a is curved in an arc shape centering on the hinge shaft 513 of the tilt hinge 51.

The locking body Y82 integrally includes: an intermediate pivot portion Y821 pivoted to the movable portion 512 of the tilt hinge 51 via a pivot shaft Y820, a 1 st pivot arm Y822 extending forward from the intermediate pivot portion Y821, a 2 nd pivot arm Y823 extending upward from the intermediate pivot portion Y821, and a 3 rd pivot arm Y824 extending rearward from the intermediate pivot portion Y821. A pressing protrusion Y825 that abuts against a pressing rod Y831 of a push latch mechanism Y83 described later is provided to protrude upward at the distal end portion Y822 of the 1 st pivoting arm. A locking claw Y826 that abuts the upper fixed installation pin Y81 at the locking position k is provided at the tip end portion of the 2 nd rotating arm Y823. At the tip end portion of the 3 rd rotating arm Y824, a weight (japanese: ) Y827 is provided for biasing the locking body Y82 to rotate the locking body Y82 clockwise in the figure. The locking body Y82 is in a state where the locking claw Y826 can intersect the long hole 512a and lock the upper fixed installation pin Y81 at the locking position k, and is in a state where the locking claw Y826 is disengaged from the long hole 512a and allows the upper fixed installation pin Y81 to pass through at the retracted position t.

The push-type latch mechanism Y83 is a normal mechanism as shown in, for example, japanese patent application laid-open No. 2008-255567, and includes a body Y832 attached to an attachment portion 512t of the movable portion 512 of the tilt hinge 51, and a push-in rod Y831 held by the body Y832 and capable of performing a protruding and retracting operation from a retracted position p to a protruding position q. Further, a biasing spring, not shown, that elastically biases the press-in rod Y831 in the direction of the protruding position q, a heart cam mechanism, not shown, that controls the protruding and recessed state of the press-in rod Y831, and the like are housed in the body Y832. Then, when the press-in rod Y831 is press-fitted into the body Y832, even if the press-in force is released by the action of the heart cam mechanism, the press-in rod Y831 is locked in the retracted position p, and when the press-in rod Y831 located in the retracted position p is press-fitted again, the lock is released and the press-in rod Y831 protrudes to the protruding position q by the elastic force of the urging spring. Since the structure in the body Y832 is a normal structure, a detailed description thereof will be omitted. The tip of the pressing projection Y825 of the locking body Y82 abuts against the tip of the press-in rod Y831 of the push-type latch mechanism Y83. Further, a lower fixed installation pin Y84 is provided projecting from the fixed portion 511 of the tilt hinge 51, and the lower fixed installation pin Y84 is used to push up the 1 st rotating arm Y822 of the locking body Y82 relatively and press-fit the press-fit rod Y831 of the push-type latch mechanism Y83 when the top plate 5 is returned to the initial angle γ.

The operation of the table D4 according to this embodiment will be described below. Fig. 19 and 20 show a state in which the top plate 5 is returned to the initial angle γ. In this state, the locking body Y82 is held at the locking position k, and the locking claw Y826 is stopped at a position to block the long hole 512 a. Further, the pushing protrusion Y825 of the locked body Y82 pushes and the pushing rod Y831 of the push-type latch mechanism Y83 is pushed and locked at the retracted position p. When the top plate 5 is tilted from this state, the upper fixed installation pin Y81 moves relatively along the elongated hole 512a, and when the top plate 5 reaches the predetermined angle α, the upper fixed installation pin Y81 is locked by the locking claw Y826 of the locking body Y82 as shown in fig. 21, and the tilting operation of the top plate 5 is temporarily stopped. The locking body Y82 is relatively rotated clockwise in the figure by the collision force at the time of locking, the press-in rod Y831 of the push-type latch mechanism Y83 is pressed a slight distance, and the locked state of the push-type latch mechanism Y83 is released. That is, when the external force disappears, the press-in rod Y831 can be in a state of protruding outward. Therefore, immediately after stopping the top panel 5 at the predetermined angle α, the upward movement of the top panel 5 is stopped and the operating force is relaxed, the push-in rod Y831 of the push-type latch mechanism Y83 protrudes from the state shown by the imaginary line in fig. 22, the locking body Y82 is rotated counterclockwise in the figure, and the locking body Y82 is retracted to the retracted position t as shown by the solid line in fig. 22. As a result, the locking claw Y826 can move to a position separated from the elongated hole 512a, and the upper fixedly provided pin Y81 can move to the lower end side of the elongated hole 512 a. In other words, as shown in fig. 23, the top panel 5 can be rotated within the lock release region R2 beyond the predetermined angle α until the maximum inclination angle is reached. When the top plate 5 is returned to the initial angle γ in the unlocked state of the tilt lock mechanism, the lower surface of the 1 st pivoting arm Y822 of the locking body Y82 located at the retracted position in the state immediately before the return is relatively pushed up by the lower fixedly provided pin Y84, and at the stage of returning to the initial angle γ, the locking body Y82 is returned to the locking position k and the press-in rod Y831 of the push-type latch mechanism Y83 is press-fitted and locked at the retracted position p, so that the state shown in fig. 19 and 20 is the original state. Fig. 19 to 22 show only the left tilt hinge 51 provided in association with the stop mechanism Y8 and the top plate 5 to which the tilt hinge 51 is attached. In addition, the fixing portion 511 of the tilt hinge 51 is indicated by an imaginary line.

Even in the table having such a configuration, when the top panel 5 is tilted from the initial angle γ toward the predetermined angle α, the operator recognizes that the top panel 5 has reached the upper limit of the top panel use region R1 by the operation of the stop mechanism Y8 at the stage when the predetermined angle α is reached. Therefore, the intermediate locking angle β set at the uppermost position of the ceiling use region R1 is also easily locked.

As a modification of the fourth embodiment, a configuration is given in which the fixed installation body is provided in the movable portion of the tilt hinge, and the locking body is provided in the fixed portion of the tilt hinge.

< fifth embodiment >

A fifth embodiment of the present invention will be described below with reference to fig. 24 to 28. Note that the same or corresponding portions as or to those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

As shown in fig. 24, the table D5 according to the fifth embodiment is provided with a stop mechanism Z8 associated with the tilt lock mechanism 7 as a mechanism side.

As shown in fig. 24 to 28, the stop mechanism Z8 includes a pair of members (specifically, the arms 71 and 72 of the tilt lock mechanism 7) that perform relative movement in accordance with the tilting movement of the top plate 5, a movable stopper Z81 provided on one arm 71 so as to be capable of changing its posture, and an engaging body Z82 provided on the other arm 71 so as to engage with the movable stopper Z81, the engaging body Z82 includes a stopper guide portion Z82a that guides the movable stopper Z81 in the top plate use region R1, a locking portion Z82b that locks the movable stopper Z81 at a stage when the predetermined angle α is reached, a stopper receiving portion Z82c that receives the movable stopper Z81 while changing the posture of the movable stopper Z81 in the lock release region R2, and a posture correcting portion Z82d that guides the movable stopper Z81 to the stopper guide portion Z82a while changing the posture of the movable stopper Z81 in the stopper receiving portion Z82c when returning the top plate 5 from the lock release region R2 to the top plate use region R1.

The movable stopper Z81 is a rectangular (japanese: short -shaped) member having a center portion rotatably supported by one of the arms 71 via a support shaft Z811, and has, for example, V-shaped recessed portions Z81a at both ends.

The engaging body Z82 is a flat plate-shaped member integrally including a wide bent portion Z821, an inner narrow bent portion Z822, an extending portion Z823, and an outer narrow bent portion Z824, the wide bent portion Z821 being fixedly provided to the base end portion 72a of the other arm 72, being fixed to the arm 72, and being bent with the center 70 of the tilt lock mechanism as the center of curvature, the inner narrow bent portion Z822 being provided continuously with one end of the wide bent portion Z821 and being bent with the center 70 of the tilt lock mechanism as the center of curvature, the extending portion Z823 extending from the tip of the inner narrow bent portion Z822 in the outer diameter direction, and the outer narrow bent portion Z824 extending from the extending end of the extending portion Z823 in the circumferential direction. The stopper guide portion Z82a is formed on the outer edge of the wide bent portion Z821, the locking portion Z82b is formed on the tip of the outer narrow bent portion Z824, the stopper receiving portion Z82c is a bay-shaped (japanese: a shape of a river drawn in り) member partitioned by the inner narrow bent portion Z822, the extending portion Z823, and the outer narrow bent portion Z824, and the posture correcting portion Z82d is formed by obliquely cutting off the outer edge of the wide bent portion Z821 on the side of the inner narrow bent portion Z822.

The operation of the table D5 according to this embodiment will be described below. Fig. 24 and 25 show a state in which the top plate 5 is returned to the initial angle γ. In this state, the movable stopper Z81 is in sliding contact with the stopper guide portion Z82a of the engaging body Z82. When the top plate 5 is gradually tilted from this state, the movable stopper Z81 moves relative to the stopper guide portion Z82a, which is the outer edge of the wide curved portion Z821, while sliding in contact therewith, and allows tilting of the top plate 5. When the top plate 5 reaches the predetermined angle α, as shown in fig. 26, the recessed portion Z81a at one end of the movable stopper Z81 abuts on and is locked in the locking portion Z82b that is the tip of the outer narrow bent portion Z824, and the top plate 5 is stopped at the predetermined angle α. When the top plate 5 is slightly returned downward from the stopped state, as shown in fig. 27, the recessed portion Z81a at the other end of the movable stopper Z81 abuts on the end portion of the wide bent portion Z821 to slightly correct the posture. That is, the rotation is made to a slight degree until the recessed portion 81a at one end does not touch the engaging portion Z82 b. When the top plate 5 is tilted upward again, one side surface of the movable stopper Z81 largely changes its posture while abutting against the locking portion Z82b, and the movable stopper Z81 enters the stopper receiving portion Z82 c. By this operation, as shown in fig. 28, the top panel 5 can be rotated beyond the predetermined angle α until the lock release region R2, that is, until the maximum tilt angle is reached. When the top plate 5 is returned in the direction of the initial angle γ, first, the movable stopper Z81 is rotated counterclockwise in the figure by the guiding action of the posture correction unit Z82d and returned to the original posture in sliding contact with the stopper guide portion Z82a also in the stopper receiving portion Z82c, and is moved toward the initial angle γ shown in fig. 24 and 25 while being in sliding contact with the stopper guide portion Z82a while maintaining this posture.

Even in the table having such a configuration, when the top panel 5 is tilted from the initial angle γ toward the predetermined angle α, the operator recognizes that the top panel 5 has reached the upper limit of the top panel use region R1 by the operation of the stop mechanism Z8 at the stage when the predetermined angle α is reached. Therefore, the intermediate locking angle β set at the uppermost position of the ceiling use region R1 is also easily locked.

In addition, in such a table, since the number of movable parts is reduced, durability can be improved.

< other embodiment >

The present invention is not limited to the above-described embodiments.

For example, in the above-described embodiments, the present invention is applied to a table in which a pair of use areas are arranged facing each other and 1 top plate or 2 top plates are provided in each use area, but the present invention can be applied to all tables having a top plate tilting function capable of locking a top plate at an arbitrary tilt angle equal to or smaller than a predetermined angle and releasing the locking by tilting the top plate beyond the predetermined angle even if the table is another table having a top plate tilting function, and the lock released state can be maintained until the top plate returns to the original initial angle. Examples thereof include a table having only 1 top board, a table having a plurality of use areas arranged in parallel in the width direction and having 1 top board arranged in each use area, and a table having a plurality of pairs of use areas arranged in pairs and facing each other and also arranged in parallel in the width direction.

The top plate may be a top plate having a tray at the rear of the top plate main body as in the first to third embodiments, or may be a top plate having no tray as in the fourth to fifth embodiments. That is, the tray may be omitted in the first to third embodiments, and conversely, the tray may be disposed rearward of the top panel main body in the fourth to fifth embodiments. In other embodiments, it is also arbitrary whether or not the tray is provided behind the top plate main body.

In addition, various modifications can be made within a range not to impair the gist of the present invention.