JPS6012847Y2 - drawer latch device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a drawer latch device installed in a desk or the like.

Hitherto, various structures have been proposed as this type of latch device, but all of them require an operation to unlock the drawer with the latch body in addition to the drawer operation when pulling out the drawer, or The reality is that the structure is complicated and the latch body is unstable in locking the drawer.

The present invention has been made in view of the above-mentioned circumstances, and provides a drawer latch device that allows one-touch operation of pulling out and storing a drawer, has a simple structure, and can effectively lock the drawer. be.

Next, one embodiment will be described with reference to the drawings.

In the figure, 1 is a top plate, and 2 is a drawer supported under the top plate 1 via appropriate support means so as to be freely drawn forward (leftward in FIG. 1).

A handle 3 bent forward in an inverted shape is connected to the upper edge of the front wall of the drawer 2, and inside the handle 3 is a latch body separately molded from synthetic resin. 4 and a latch operating body 5 are positioned at the center position in the width direction of the drawer 2 and are supported via a support shaft 6 horizontally suspended within the handle 3 so as to be vertically movable.

That is, as shown in FIG. 5, the latch body 4 has a support part 7 in which an insertion hole through which the support shaft 6 is inserted is formed at the distal end thereof, a vertical engagement surface 8a on the front surface, and a rearward downward direction on the rear surface. It is formed in a shape including an engaging part 8 formed on a slanted cam surface 8b and protruding from the support part 7, and a connecting part 9 vertically provided from the support part 7, Moreover, the latch operation body 5 is
A support part 10 having a front end formed with an insertion hole through which the support shaft 6 is inserted, which is slightly inclined downwardly at the rear, a connecting part 11 hanging down from the rear end of the support part 10, and a lower end of the connecting part 11. The support part 10 and the connecting part 11 to be connected to the support part 10 are cut out at the center in the width direction, and the latch body 4 has a width slightly wider than the width of the latch body 4. It is formed into a shape with an insertion groove 13 formed therein.

Both bodies 4 and 5 are such that the connecting portion 9 of the latch body 4 directly faces the front surface of the connecting portion 11 of the latch operating body 5, and the latch body 4
The rear end portion of the support portion 7 and the engagement portion 8 of the latch operation body 5 are supported on the support shaft 6 via the support portion 7.10 so as to be freely movable up and down, with the rear end portion of the support portion 7 and the engagement portion 8 protruding from the insertion groove 13 of the latch operation body 5. There is.

Further, the latch operating body 5 is normally suspended on the support shaft 6 such that the front surface of the operating portion 12 is flush with the front surface of the handle 3 in the vertical direction.

Further, an insertion hole 14 is formed at the joint between the front wall of the drawer 2 and the top wall of the handle 3, through which the latch body 4 is inserted so that the joint 8 is flanged onto the top wall of the handle 3. A spring 15 is interposed between the front surface of the connecting portion 9 of the latch body 4 and the rear surface of the front wall of the handle 3 to bias the latch body 4 so as to project upward from the insertion hole 14. Therefore, in the latch body 4, the engagement surface 8a of the engagement portion 8 is normally connected to the insertion hole 14.
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Alternatively, the upper surface of the support part 7 is held biased in the engagement position (FIG. 1 position) in which the upper surface of the support part 7 is locked with the lower surface of the upper wall of the handle 3,
In this state, the connecting portion 9 of the latch body is merely in contact with the connecting portion 11 of the latch operating body 5 in the above-described suspended state by pressing it.

Then, when the latch operating body 5 is rotated forward from the state where the latch body 4 is biased and held in the engagement position, first, both the connecting parts 9 and 11 are mutually moved in the direction of the rotational force. When engaged, the bodies 4 and 5 are connected so as to rotate together, and in this state, the bodies 4 and 5 resist the spring 15 so that the engaging portion 8 is almost completely removed from the insertion hole 14. The state is changed to the retracted disengaged position (FIG. 2 position).

The lower end edge of the front wall of the handle 3 is bent inward to form a locking portion 3a, so that the latch body 4 can prevent the forward rotational displacement of the latch operating body 5. It is devised so that it can be regulated at the position shown in FIG. 2, which is the disengagement position.

Furthermore, the handle 3 is provided with a locking pin 16 that locks and restricts the latch operating body 5 from being unexpectedly rotated rearward from the normal state shown in FIG.

Further, the front end of the lower wall of the top plate 1 has an engagement recess into which the engagement portion 8 of the latch body 4 when placed in the engagement position protrudes, and the engagement surface 8a thereof can engage. 17 are formed.

Therefore, the latch body 4, the latch operation body 5, and the engagement recess 17 are arranged centrally in the width direction of the drawer 2.

With the above configuration, the drawer 2 can be placed in the retracted state (first
When drawing the drawer 2 forward from the state shown in the figure, all you have to do is hook your finger on the operating portion 12 of the latch operating body 5 and pull out the drawer 2 as it is.

That is, when you hook your finger on the operating part 12 of the latch operating body 5 and pull it forward, the latch operating body 5 is rotated forward to a position where it is locked with the locking part 3a of the handle 3, and then Accordingly, the latch body 4 integrally connected to the latch operating body 5 via the connecting parts 9 and 11 is displaced to the disengagement position, and the engaging part 8 is disengaged from the engaging recess 17 of the top plate 1. is,
The drawer 3 is unlocked (FIG. 2).

Therefore, by continuing to pull the latch operating body 5, that is, the operating portion 12 forward in this state, the drawer 2 is pulled out.

In this way, by simply pulling the latch operation body 5 forward, the operation of releasing the locking action of the latch body 4 of the drawer 2 and the operation of pulling out the drawer 2 can be easily performed with one touch.

Moreover, when the drawer 2 is to be retracted, the handle 3 of the drawer 2 can be simply pushed backward.

That is, when the handle 3 of the drawer 2 is pushed, the front edge of the lower wall of the top plate 1 collides with the cam surface 8b of the latch body 4, and the cam surface 8b is relatively released downward. , the latch body 4, that is, the upper end of the engaging part 8 is pushed downward by the spring 1 under the lower wall of the top plate 1.
5 and then slid along the lower wall surface of the top plate 1 (Fig. 3).

At this time, regardless of the displacement of the latch body 4, the operating portion 12 of the latch operating body 5 does not protrude from the front surface of the handle 3 and is flush with the front surface of the handle 3. There is no need to worry about pressing the button 12, but even if the operating section 12 is pressed by mistake, an unexpected situation will not occur because the bodies 4 and 5 are not integrated.

That is, if the bodies 4 and 5 are integrated, and if the operating part 12 is pulled out while pushing and the latch body 2 is retracted, the latch body 4 will naturally be held in an unmovable position from the engaged position. 1. Due to the above-mentioned collision with the top plate 1, the escape of the cam surface 8b (and the sliding of the upper end of the engaging part 8) may not occur smoothly, and the latch body 4 may collide strongly with the top plate 1 and be damaged. In such a case, there is a risk that the latch device may be damaged.

However, in the latch device according to the present invention, the picture bodies 4 and 5 are separate bodies, and only when the latch body 4 is moved down toward the disengaged position.
5 are configured to be integrally connected by the engagement of the connecting portions 9 and 11. Therefore, even when the drawer 2 is retracted by accidentally pushing the operation portion 12 as described above, the lower movement of the latch body 4 is prevented. is not hindered except by the bias of the spring 15, so there is a risk that the cam surface 8b will strongly collide with the top plate 1 and be damaged, or that the upper end of the engaging portion 8 may be prevented from sliding toward the top plate 1. There isn't.

In the above-mentioned embodiment, for example, in the state shown in FIG. 3 where the engaging part 8 is sliding, when the operating part 12 is pushed, the lower end of the insertion groove 13 pushes up the latch body 8.
A situation may occur in which the upper end of the engaging portion 8 is strongly pressed against the top plate 1, but in such a situation, the latch operating body 5 is rotated further backward to the state shown in FIG. 3 due to the locking action of the locking pin 16. This is prevented by restricting the dynamic displacement.

Such a means for restricting rearward rotation of the latch operating body 5 is as follows:
Regardless of the locking pin 16, the upper surface of the support portion 10 and the handle 3
This may be done by engagement with the lower surface of the earthen wall, or engagement between the rear surface of the connecting body 11 and the front surface of the front wall of the drawer 2, or the like.

In short, it is sufficient to prevent the latch body 4 from being moved upward in conjunction with the operation of the latch operation body 5.

Moreover, even if the drawer 2 is retracted while pushing the latch operating body 5, that is, the operating part 12, as described above, the upper end of the engaging part 8 of the latch body 4 will slide while being pressed strongly against the lower wall surface of the top plate 1. Therefore, the storage operation of the drawer 2 can be performed smoothly, and the top plate 1 on which the engaging portion 8 slides
There is also less risk of damage to the lower wall surface.

However, even if the paint on the bottom wall surface of the top plate 1 were to peel off or be accidentally scratched due to the sliding of the engaging portion 8 during long-term use, the bottom wall surface would remain in a position that is normally invisible, and the appearance would be affected. It never gets worse.

Then, when the handle 3 (or the operating part 12 of the latch operating body 5) is further pushed to bring the drawers 1 and 2 to the storage position, the latch body 4 is moved upward by the spring 15 and enters the engagement recess 17 and engages. (Figure 1).

In this stored state, at the center of the drawer 2 in the width direction,
The engagement surface 8a of the latch body 4 is engaged with the front end of the engagement recess 17, and the drawer 2 is reliably and stably locked in the stored position without being accidentally pulled forward.

In addition, when stored, the operation section 12 of the latch operation body 5
Since the handle 3 does not protrude from the front surface of the handle 3, it has a good appearance.

It should be noted that the latch device according to the present invention is not limited to the above-mentioned embodiment. The force may be maintained so that it does not naturally rotate forward from this state. If this is done, the latch operation body 5 can be used to lower the latch body 4 without any trouble, and the drawer 2 can be opened. This is advantageous because the latch operating body 5 does not shake unexpectedly when it is inserted.

In any case, as is clear from the above explanation, according to the latch device of the present invention, the drawer operation of the drawer locked by the latch body can be performed extremely easily with one touch without performing a separate unlocking operation. And it can be done easily.

In addition, since the launch device of the present invention has the latch body, latch operating body, and engaging recess centrally arranged in the widthwise center of the drawer, the entire device can be miniaturized and the structure can be simplified. It can be effectively stored and deployed within a limited handle.

Furthermore, because the engaging recess is formed and secured using the bottom wall of the top plate, the number of parts is greatly reduced, which reduces the cost and production of the device and the entire furniture equipped with it. This is extremely advantageous.

Furthermore, the operating force acting position of the latch operating body, the operating force transmission position from the latch operating body to the latch body, and the engaging position of the latch body to the engagement recess are close to each other, and the locking action by the latch body is Since this is done at the center of the width of the drawer, it is possible to ensure sufficient strength and excellent durability without making the picture body unnecessarily large.
To lock a drawer reliably and stably.

Furthermore, when the drawer is in the retracted state, the latch operating body does not protrude from the handle, giving it a good appearance.

Further, since the latch body and the latch operating body are separate bodies, and the picture body is integrally connected only when the latch operating body is used to move the latch body downward toward the disengaged position, Even when the latch operation body is operated during the drawer storage operation, the latch body will not be damaged due to strong collision with the top plate, and the durability of the device itself can be improved. Even if a hand or the like touches the latch body in the pulled out state, the latch body easily moves down and retracts into the handle, so there is little risk of injury and is safe.

[Brief explanation of the drawing]

1 to 3 are longitudinal side views showing an embodiment of the latch device according to the present invention (the cross section is taken along the line ■-I in FIG. 4). The figure shows the unlocked state.
Figure 3 shows the storage operation state, and Figure 4 is a front view of the same section (the cross section is along the line IV-IV in Figure 1).
, FIG. 5 is an exploded perspective view of the main parts. 1...! ...Top plate, 2...Drawer, 3...
...Handle, 4...Latch body, 5...
Latch operation body, 15... Spring (biasing), 17.
...Engagement recess.

Claims (1)

[Scope of utility model registration request] A latch body biased to protrude upward from the upper surface of the handle is provided in the handle of the drawer so as to be movable up and down, and an engagement recess is provided in which the latch body protrudes upward and engages in the storage position of the drawer. , provided on the lower surface of the front edge of the top plate, and in the handle of the drawer, is separate from the latch body, and is engaged and connected to the latch body only in the direction of moving the latch body downward. A latch operation body is provided for disengaging the engagement recess, and the latch body, the latch operation body, and the engagement protrusion are arranged centrally in the width direction of the drawer. Drawer latch device.