JP2003106024A - Latch device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize a latch device permitting to use the same component even though a plurality of products of different dimensions are to be produced. SOLUTION: An operation lever is provided on a base body 9, a support shaft 26 is supported by a shaft supporting portion provided at the inner surface side of the base body 9, a drive 39 is extended from the support shaft 26 in an almost radius direction, a follower plate 46 having a predetermined dimension in almost parallel direction relative to the center shaft of the rotation of the latch claw 34 is protruded and the drive arm 39 is directly contacted to the follower plate 46, the drive arm 39 is pushed and rotated to a required operation position by an operation force applied to the operation lever so as to make it possible to push and rotate the drive arm 39 by the operation force applied to the operation lever thereby constituting the latch device capable of driving the latch claw 34.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a latch device applicable to drawers, locker doors, and the like.

[0002]

2. Description of the Related Art As a latch device of this type, for example, an operating lever is provided in a recess for a handle provided on a drawer end plate, and a spindle of the operating lever is rotated to a shaft support part provided on the inner surface side of the end plate. The drive arm is supported as much as possible, and the drive arm is made to project substantially downward from one end of this support shaft, and the drive arm can be rotated by the operation force applied to the operation lever to directly or indirectly drive the latch pawl. Have been developed. That is, the latch claw in this type of latch device is rotatably attached to the inner surface side of the end plate in a state where an elastic force is applied in a certain rotation direction by a spring, and the drawer is retracted to the storage position. At this stage, the tip of the latch claw is automatically engaged with the mooring portion provided on the inner surface of the side wall of the furniture body. Then, the drive arm is rotated forward by pulling the operation lever toward you,
By directly or indirectly driving the latch claw with the tip portion of the drive arm, the locked state by the latch claw can be released.

[0003]

By the way, when manufacturing and selling furniture and the like, in order to meet the needs of users,
It is desirable to prepare various variations in size and design. On the other hand, if a large variety of products are to be prepared, there is a problem that the number of types of parts also increases, resulting in an increase in manufacturing cost.

In the above-mentioned example, when preparing a plurality of variations in the size of the drawer to which the latch device is applied, it is necessary to manufacture components of the latch device having a plurality of sizes. Be forced. In other words, because the vertical dimension of the drawer and the like differ, the distance between the operating lever and the latch mechanism also differs, so it is necessary to change the dimensions of the components of the latch device according to the dimensions of the drawer. there were.

In view of such a problem, the present invention has an object to realize a latch device that can use the same constituent parts even when manufacturing a plurality of products of different sizes.

[0006]

In order to solve the above problems, a latch device according to the present invention is provided with an operating lever and a support shaft rotatably supported by a base body, and a rotation shaft of the support shaft. And a latch claw rotatably supported about a substantially vertical axis, wherein the drive arm extends from the support shaft in a substantially radial direction, and the latch claw rotates together with the latch claw. A driven plate having a predetermined dimension in a direction substantially parallel to the rotation axis of the drive unit, and the drive arm is brought into contact with the driven plate at an arbitrary position within the range of the predetermined dimension and added to the operation lever. The operation arm is configured to rotate the drive arm to a desired operation position to drive the latch claw. If it looks like this,
By appropriately setting the dimensions of the drive arm and the driven plate, the distance (in the rotation axis direction of the latch pawl) between the support lever support shaft and the latch pawl can be made flexible without changing the dimensions of these parts. Can be changed to That is, it is possible to more freely design the size of a product such as furniture to which the latch device is applied, without giving special consideration to the arrangement position of the operation lever or the arrangement position of the latch mechanism. It is also possible to implement the latch device using the same components for products of different sizes.

In the above structure, instead of the driven plate, a driven member having a contact portion having a predetermined dimension in a direction substantially parallel to the rotation axis of the latch claw and an arm portion extending in a substantially vertical direction is used as the latch claw. It may be provided so as to rotate together therewith, and the drive arm may abut against the contact portion of the driven member.

If the drive arm is provided with a projecting portion that projects in a direction substantially parallel to the support shaft, the projecting portion makes contact with the driven plate or the contact portion of the driven member. By changing the distance between the support shaft of the operating lever and the latch claw, the physical effect on the function of the latch device is small, and the versatility of the parts is further enhanced.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a wagon 1 in which a latch device according to the present invention is applied to drawers 2, 3, and 4.

As shown in FIG. 2, the drawer 3 has a body portion 7 made of sheet metal that forms a storage space, a back plate 8 made of sheet metal joined to the front end of the body portion 7 by welding, and the like. End plate 9 which is a base body made of synthetic resin detachably attached to the front side of 8
And is provided. The drawers 2 and 4 also have a configuration similar to that of the drawer 3, with the exception of exceptions described later. As shown in FIGS. 2 and 3, the back plate 8 has a base end side horizontal piece 11 that extends forward at the upper edge, and a base end side horizontal piece 11.
Upright piece 12 that rises upward from the front edge of the upright piece, and upright piece 1
2 is provided with a front end side horizontal piece 13 extending forward from the upper edge, a lower piece 14 extending forward is provided on a lower edge, and a base end side protruding piece extending forward on a side edge is further provided. 15
And a side piece 16 extending outward from the front edge of the proximal end side protruding piece 15, and a front end side protruding piece 17 extending forward from the outer edge of the side piece 16.

As shown in FIG. 4, the end plate 9 has a face plate portion 21 having a recess 20 for a handle, an upper wall portion 22 extending rearward from an upper edge of the face plate portion 21, and a face plate portion 21. Is a flat-casing type having a lower wall portion 23 extending rearward from a lower edge of the face plate and a side wall portion 24 extending rearward from a side edge of the face plate portion 21 and integrally molded of synthetic resin. ing.
An operating lever 25 for operating the latch claw is provided in the recess 20. A support shaft 26 of the operating lever 25 is attached to the end plate 9
Shaft support portions 27, 28, 29 provided so as to project on the inner surface of the
It is rotatably supported by 30, 31, 32. Further, the latch claw support portion 33 provided on the inner surface side of one end portion of the end plate 9
While rotatably supporting the base end portion 35 of the latch claw 34, and projecting the tip end portion 36 of the latch claw 34 to the outside through the transparent window 37 provided on the side piece 16 of the back plate 8.
When the drawer 3 is retracted to the storage position, the latch claw 3
4 is configured to engage with the mooring portion 38 provided on the inner surface of the side wall of the sleeve body 6, and is configured to release the state in which the latch claw 34 is engaged with the mooring portion 38 by operating the operation lever 25. is doing.

More specifically, the operating lever 25 is
As shown in FIG. 5, it is a curved plate that hangs downward, and the front end 251 shown in FIG. 1 is formed by increasing the thickness of the tip. Then, the finger inserted into the recess 20 for the handle can be hung on the back surface 25a side. A drive arm 39 for driving the latch claw 34 is integrally provided at one end 26 a of the support shaft 26 of the operation lever 25 so as to be orthogonal to the axis of the support shaft 26. At the tip of the drive arm 39, a protrusion 391 that protrudes in a direction substantially parallel to the support shaft 26 of the operation lever 25 is provided. As shown in FIGS. 5 to 8, the shaft support portion 27 that rotatably supports the one end 26a side of the support shaft 26 has a shaft holding groove 27a that is opened rearward. Reference numeral 27a denotes a first bulge portion 27c having a partially arcuate shaft holding portion 27b formed in the inner side and a first stop step portion 27f formed on the one side of the lower opening end portion on the inner side.
And the second stop step 27e is formed on the other side of the opening end and on the back side.
And a second bulge portion 27d provided with. The corresponding portion 26b of the support shaft 26 rotatably supported by the shaft support portion 27 has a cylindrical shape that is rotatably engaged with the shaft holding portion 27b.
A first cutout portion 26g and a second cutout portion 26c are formed. The first cutout portion 26g is provided on the lower surface side of the support shaft 26 in a state where the support shaft 26 is in the assembly rotation posture B shown by the dotted line in FIG. In the operating position D, the first stop for engaging the first stop step portion 27f and preventing the support shaft 26 from coming off the shaft support portion 27.
A retaining step 26h is formed. The stop mechanism 7 is the first
It comprises a stop step portion 27f and a first retaining step portion 26h. The second cutout portion 26c is for allowing the support shaft 26 to be inserted into the shaft holding groove 27a.
The second stop step portion 27 is provided at one end on the back side of the cutout portion 26c.
In the non-operating position D, which will be described later in relation to e, the spindle 2
A second retaining step 26d is formed to prevent 6 from coming off from the shaft support 27. That is, the second stop mechanism 8
Is composed of a second stop step portion 27e and a second retaining step portion 26d. The second shaft support portion 28 is a plate-shaped member having a U-shaped shaft holding groove 28a that is open rearward.
The intermediate shaft support portions 29, 30, 31 are respectively the support shaft 26.
Is a plate-like member having a shape capable of slidingly supporting the outer peripheral quarter arc portion. The shaft support portion 32 that supports the other end 26e of the support shaft 26 is a cylindrical portion 32a that can support the entire circumference of the support shaft 26.
Is equipped with. A pair of protrusions 26f are provided at a center portion of the support shaft 26 in the left-right direction so as to protrude at a predetermined interval, and the protrusions 26f are brought into contact with both side surfaces of the center shaft support portion 30. The horizontal movement of the operating lever 25 is prevented.

In order to mount the support shaft 26 on the end plate 9, first, the support shaft 26 is held in the assembly rotational posture B shown by the imaginary line in FIG. 5 and the solid line in FIG. 6, and then the other end 26e. Is inserted into the cylindrical portion 32a of the shaft support portion 32, and then the one end 26a side of the support shaft 26 is moved forward to push the corresponding portion 26b into the shaft holding groove 27a of the shaft support portion 27.
In this assembly rotation posture B, the second cutout portion 2
Since 6c corresponds to the second bulge portion 27d, the corresponding portion 26b of the support shaft 26 can be engaged with the shaft holding portion 27b of the shaft holding groove 27a by a slight elastic deformation of the member. In this state, the support shaft 26 can be rotated in the use rotation area A between the non-operating position D shown in FIG. 7 and the operating position C shown by the solid line in FIG. The non-operation position D is a position where the protrusion 391 of the drive arm 39 contacts the latch claw 34 in a state where no operation force is applied to the operation lever 25, and the operation position C is the position where the operation lever 25 is moved forward. It is the position where you can no longer pull after pulling. At the non-operating position D, the first retaining step 26h of the support shaft 26 comes into contact with or comes close to the first stop step 27f of the shaft support 27, as shown in FIG.
Rotation of the support shaft 26 out of the use rotation region A is prohibited, and the support shaft 26 cannot fall off the shaft support portion 27.
Further, in the operation position C, as shown in FIG.
The second stopper step 26d of the second stop step 2 of the shaft support 27
The supporting shaft 26 cannot come off from the shaft support portion 27 because it comes into contact with or approaches 7e. In this embodiment,
In this non-operating position D, the front surface 25 of the operating lever 25
1 and the front surface 9a of the end plate 9 are set to be flush with each other.

On the other hand, the latch claw 34, as shown in FIG. 5, is provided with a rod-shaped base end portion 35 having shaft portions 41 and 42 having small diameters at both ends, and protruding rearward from the base end portion 35. It is provided with a front end portion 36 having a hole 44 and a driven plate 46 protruding inward from the base end portion 35 and integrally molded of synthetic resin. The base end portion 35 of the latch claw 34 is attached to the latch claw support portion 33 in a direction substantially orthogonal to the forward / backward direction of the drawer 3. That is, the latch claw support 33
As shown in FIG. 5, upper and lower support walls 47 and 48, which are provided so as to project rearward from the inner surface of the end plate 9 and rotatably support the base end portion 35 of the latch claw 34, and the support walls 47 and 48. The rear wall 50 is provided between the rear ends 47 and 48 and has a notch 49 for allowing the front end portion 36 of the latch claw 34 to pass, and the rear wall 50 and the support walls 47 and 48 are provided on the outer edge side. It has a box shape with an outer side wall 51 and is opened inward. The upper and lower support walls 47, 48 have concave portions 47a, 48a, and the concave portions 47a, 48a, respectively.
48a is provided with guide surfaces 47b and 48b for guiding the shaft portions 41 and 42 of the latch claw 34, and the upper support wall 47 is provided.
The guide surface 47b is inclined so as to gradually lower toward the concave portion 47a. To attach the base end portion 35 of the latch claw 34 to the latch pawl support portion 33, first, the latch pawl 34 is positioned inside the latch pawl support portion 33, and then the base end portion 35 below The shaft portion 42 is inserted into the recessed portion 48a while being guided by the guide surface 48b of the lower support wall 48, and then the upper shaft portion 41 of the base end portion 35 is rubbed against the guide surface 47b of the upper support wall 47. While inserting it, it is inserted into the concave portion 47a. That is, since the guide surface 47b is inclined as described above, by strongly pressing the shaft portion 41 while rotating the latch claw 34, the support wall 47 and the like are temporarily elastically deformed and the shaft portion 41 is deformed. Engages with the recessed portion 47a of the support wall 47. 2 to 4, the shaft portions 41 and 42 are recessed portions 4 of the upper and lower support walls 47 and 48.
7a and 48a are shown to be engaged with each other. Reference numeral 52 is a spring that elastically biases the latch claw 34 in the engaging direction of the latch pawl 34, that is, in the direction of outward rotation. In this way, on the rear side of the driven plate 46 of the latch claw 34 mounted on the latch claw support 33,
A protruding portion 391 of a drive arm 39 provided so as to protrude from the support shaft 26 of the operation lever 25 is brought into contact with the driven plate 46 as a contact portion.

With the operation lever 25 and the latch claw 34 assembled, the end plate 9 is mounted so as to cover the back plate 8. Specifically, the upper wall portion 22 of the mirror plate 9 is rotatably and rotatably locked by the locking means 55, and the lower wall portion 23 of the mirror plate 9 is attached to the lower piece 14 of the back plate 8 on the back side of the mirror plate 9. It is fastened via elastic engaging means 56 which are engaged with each other by utilizing the approaching rotation operation with respect to the plate 8. Latching means 55
As shown in FIG. 2, a bent hole 57 continuously formed from a portion of the back plate 8 near the upper edge of the standing piece 12 to a portion of the front side horizontal piece 13 near the rear edge thereof, and the upper wall portion 22 of the end plate 9. And a plate-like hooking claw 58 which is provided so as to project downward from the insertion hole and is inserted into the bending hole 57. The thickness dimension of the hooking claw 58 is an assembly in which the end plate 9 is tilted backward. In the preparatory posture, it can be slantedly fitted into the bending hole 57 from the upper rear side, and in the assembled posture in which it stands upright, the front end of the front surface thereof is in close contact with the front end edge of the bending hole 57 and the rear end portion thereof is It is set so that it can be brought into close contact with the front surface of the standing piece 12.

As shown in FIGS. 2 and 4, the elastic engaging means 56 is provided with a window hole 59 provided in the lower wall portion 23 of the end plate 9 and a rear edge of the window hole 59 provided in the window hole 59. A tongue-shaped engaging claw 61 that is elastically deformable in the vertical direction, and an engaging recess 62 provided in the lower piece 14 of the back plate 8.
The engaging claw 61 is engaged with the engaging recess 62 of the back plate 8 by utilizing the temporary elastic deformation of the member.

In the state where the end plate 9 is attached to the back plate 8 in this manner, as shown in FIG. 3, the front end portion 36 of the latch claw 34 is provided with a transparent window 37 formed in the side piece 16 of the back plate 8. It penetrates and projects to the rear of the back plate 8, and the transparent window 37 is closed by the rear wall 50 of the latch claw support 33. With such a structure, when the drawer 3 is retracted to the storage position, the tip end portion 36 of the latch claw 34 comes into contact with the mooring portion 38 provided on the inner surface of the sleeve body 6 along the way. You will be guided inward. As a result, the latch claw 34 temporarily rotates inward against the elastic force of the spring 52 and then self-returns to its original position.
The holes 44 provided in the engaging member 6 engage with the mooring portion 38. Therefore, in this state, the drawer 3 is held in the retracted position and is not opened forward carelessly. When a finger is inserted into the recess 20 for the handle from this position and the operation lever 25 is pulled forward, the drive arm 3 provided on the support shaft 26 of the operation lever 25.
9 rotates forward, and the protrusion 391 pushes the driven plate 46 of the latch claw 34 forward. As a result, the tip end portion 36 of the latch claw 34 rotates inward against the elastic force of the spring 52, and the locked state due to the engagement between the latch claw 34 and the mooring portion 38 of the sleeve main body 6. It will be canceled. Therefore, the drawer 3 can be pulled out forward.

Although it is possible to operate as described above, the spindle 2 that supports the operating lever 25 of this latch device.
Since one end 26a side of 6 is supported by the shaft support portion 27 by the configuration shown in FIG. 6 to FIG. 8 described above, for example, in order for the carrier to lift the wagon 1, the hand is deeply inserted into the drawer handle recessed portion. Even when the operation lever 25 is strongly operated so as to be pushed backward while rotating in the direction opposite to the pulling operation, the first retaining step portion 26h of the support shaft 26 causes the shaft support portion 2 to move.
The first stop step portion 27f of No. 7 contacts the shaft support portion 27 of the support shaft 26 to prevent the support shaft 26 from falling off. Further, in this embodiment, even if the operation lever 25 is strongly pulled, the support shaft 26 does not come off from the shaft support portion 27. That is, from the operation position C (see the solid line in FIG. 8) in which the tip end portion 34 of the latch claw 34 is rotated to the innermost position and the drive arm 39 cannot be rotated further forward, the operation lever 25 is further moved.
When the tow is strongly pulled forward, the one end 26a side of the support shaft 26 is moved toward the other end 26 and the drive arm 39 by the reaction.
Although it tries to rotate backward with the tip of the shaft as a fulcrum, its backward movement is blocked by the second stopper step 26d hitting the second stop step 27e of the shaft support 27. Therefore, it is possible to reliably prevent the support shaft 26 from coming off the shaft support portion 27.

When the operating force is not applied to the operating lever 25, the drive arm 39 is prevented from rotating forward by the driven plate 46 of the latch claw 34, and the first retaining step portion 26h and the first retaining step portion 26h. Since the rearward rotation is also suppressed by the contact with or close proximity to the first stop step portion 27f, even if the drawer 3 is tilted or vibrated, the operation lever 25 does not hang and the appearance can be improved. Further, even if the operation lever is suddenly released from the pulling operation state or the like, the first retaining step 26h and the first stop step 27f
Since the rearward rotation is suppressed by abutting with the contact, it is possible to prevent a problem that a large metallic sound is generated due to the tip of the drive arm 39 hitting the upper plate of the drawer 3.

In this embodiment, the end plate 9 serving as the base body is used.
Regarding the latch devices applied to the drawers 2 and 4 having different vertical dimensions, the operation lever 2 supported by the support shaft 26 is also used.
5, the latch claw 34 and the driven plate 46 are
It is possible to standardize parts by using the same one applied to. The driven plate 46 is the latch claw 3.
Since it has a predetermined dimension in the direction parallel to the rotation axis of 4, ie, in the vertical direction, it is possible to continuously displace the support shaft 26 in the vertical direction. FIG. 9A shows a state in which the drawer 4 having a large vertical dimension is provided with a latch device, and the protruding portion 391 of the drive arm 39 is attached to the driven plate 46.
Is applied to the upper end side of. FIG. 9B shows a state in which the drawer 2 having a small vertical dimension is provided with a latch device, and the protruding portion 391 of the drive arm 39 is applied to the lower end side of the driven plate 46. The difference in the contact position between the protrusion 391 and the driven plate 46 corresponds to the difference in the vertical dimension of the drawer 3. In addition, since the latch claw 34 is driven by pushing the driven plate 46 with the drive arm 39, as shown in FIG. 10, the distance between the support shaft 26, which is a force acting portion, and the protrusion 391 is constant. , Does not depend on the distance between the support shaft 26 of the operating lever 25 and the latch claw 34 (in the vertical direction). The non-operating position D and the operating position C are also between the support shaft 26 of the operating lever 25 and the latch claw 34 (in the vertical direction).
Independently of the distance, the conclusion is that even if the latch device is mounted on the drawers 2 and 4 of different dimensions using the same components used for the drawer 3, the protrusion 391 provided on the drive arm 39 As long as the driven plate 46 and the driven plate 46 are properly engaged with each other, the function as the latch device is not hindered.

Therefore, according to this embodiment, the operation lever 25 is provided on the end plate 9, and the support shaft 26 of the operation lever 25 is attached to the end plate 9.
Shaft support portions 27, 28, 29, 30, 3 provided on the inner surface side of the
1 and 32 are rotatably supported, and the drive arm 39 is extended from the support shaft 26 in a substantially radial direction.
Of the latch claw 34, which is rotatably supported by the latch claw support 33, rotates with the latch claw 34 and has a predetermined dimension substantially parallel to the rotation axis of the latch claw 34. The plate 46 is provided so as to project, the drive arm 39 is brought into contact with the driven plate 46 at an arbitrary position within the range of the predetermined size, and the drive arm 39 is operated by a required operation force by the operation lever 25. The latch device configured to drive the latch claw 34 by pressing and rotating it to the position D includes the drive arm 3
9 and the dimensions of the driven plate 46 are appropriately set to flexibly and continuously change the distance (in the rotation axis direction of the latch claw 34) between the support shaft 26 of the operation lever 25 and the latch claw 34. You will get it. Therefore, it is possible to freely set the distance between the position of the operation lever 25 serving as a puller and the position where the latch mechanism is arranged. That is, it is possible to more freely design the size of a product such as furniture to which the latch device is applied, and it is also possible to mount the latch device on products of different sizes by using the same constituent parts. Of course, the shape of the drive arm 39 and thus the support shaft 26
It also has an effect that it is not necessary to make the shape complicated.

A projecting portion 391 is provided at an extended end of the drive arm 39 so as to project in a direction substantially parallel to the support shaft 26. The projecting portion 391 abuts on the driven plate 46 so that the latch claw 34 is formed. Is configured to be able to drive the support shaft 26 of the operating lever 25.
The physical influence on the function of the latch device by changing the distance between the latch claw 34 and the
The versatility of parts is further enhanced.

The present invention is not limited to the embodiment described in detail above. In particular, the driven plate 46 that engages with the drive arm 39 does not necessarily have to be plate-shaped. As shown in FIGS. 11 (a) and 11 (b), a follower including a contact portion 46A1 having a predetermined dimension in a direction substantially parallel to the rotation axis of the latch claw 34 and an arm portion 46A2 extending in a substantially vertical direction. Even if the member 46A is provided at the base end portion 35 of the latch claw 34 so that the protrusion 391 of the drive arm 39 contacts the contact portion 46A1 of the driven member 46A, a latch device having the above-described effect is realized. be able to. Not limited to the one shown in FIG. 11,
A driven member 46A having an L shape, a T shape, or the like may be provided instead of the driven plate 46. Alternatively,
The driven member 46A may be configured by bending the linear body into an L-shape, a U-shape, a B-shape, or the like.

The shapes and dimensions of the driven plate 46, the driven member 46A, and the drive arm 39 may be changed as needed. In the above embodiment, the latch claw 34 is driven by the protrusion 391 provided on the drive arm 39, but the protrusion 391 does not necessarily have to be provided. If the protrusion 391 is omitted and the latch claw 34 is driven by the drive arm 39 main body, the shape of the support shaft 26 can be made simpler.

Further, the latch device according to the present invention can be applied not only to the drawers 2, 3 and 4 of the wagon 1, but also to a drawer provided on a sleeve portion of a desk, a door of a rocker and the like. Needless to say. In addition, the specific configuration of each unit is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention.

[0026]

Since the present invention has the above-described structure, the distance between the operating lever and the latch mechanism can be freely set without using components of different sizes. It can be said that this is an implementation of a latch device that can be used. Then, it becomes possible to mount the latch device on products of different sizes by using the same components.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a perspective view showing the inner surface sides of the end plate and the back plate in the same embodiment.

FIG. 3 is a perspective view showing an outer surface side of a back plate in the same embodiment.

FIG. 4 is a perspective view showing an inner surface side of the end plate in the same embodiment.

FIG. 5 is an exploded perspective view showing an inner surface side of the end plate in the same embodiment.

FIG. 6 is an explanatory view showing assembly of the embodiment.

FIG. 7 is an explanatory view showing the assembly of the same embodiment.

FIG. 8 is an explanatory diagram showing an operation of the same embodiment.

FIG. 9 is a perspective view showing the inside of another drawer in the same embodiment.

FIG. 10 is an explanatory view showing the operation of the same embodiment.

FIG. 11 is a perspective view illustrating the configuration of a driven member.

[Explanation of symbols]

9 ... Base (end plate) 9a ... Front of substrate (front of end plate) 25 ... Operating lever 251 ... Front of operation lever 26 ... Spindle 27, 28, 29, 30, 31, 32 ... Shaft support 34 ... Latch claw 39 ... Drive arm 391 ... Projection 46 ... Follower plate 46A ... Follower member 46A1 ... hitting part 46A2 ... Arm part

Claims (3)

[Claims] 1. A support shaft provided with an operating lever and rotatably supported by a base body, and a latch claw rotatably supported about an axis substantially perpendicular to the rotation axis of the support shaft. In the latch device, a drive arm is extended from the support shaft in a substantially radial direction, and a driven plate having a predetermined size is protruded in a direction substantially parallel to a rotation axis of the latch claw by rotating with the latch claw. If the drive arm is provided, the drive arm is brought into contact with the driven plate at an arbitrary position within the predetermined size range, and the drive arm is rotated to a desired operation position by an operation force applied to the operation lever so that the latch pawl is moved. A latch device configured to be driven. 2. A support shaft provided with an operating lever and rotatably supported by the base body, and a latch claw rotatably supported about an axis substantially perpendicular to the rotation axis of the support shaft. A latch device, in which a drive arm is extended from the support shaft in a substantially radial direction and is rotated with the latch claw and has a predetermined dimension in a direction substantially parallel to a rotation axis of the latch claw and a substantially vertical direction. A driven member having an arm portion extending to the front is provided so as to protrude, the drive arm is applied to the contact portion at an arbitrary position within the range of the predetermined size, and the drive arm is moved by the operation force applied to the operation lever. A latch device configured to drive the latch claw by rotating it to a desired operation position. 3. The latch claw, wherein the drive arm includes a protrusion protruding substantially parallel to the support shaft, and the protrusion abuts on the driven plate or the contact portion of the driven member. The latch device according to claim 1 or 2, wherein the latch device is configured to be driven.