JP3028846U - Latch device - Google Patents

Abstract

(57) An object of the present invention is to provide a latching device in which the locking lock is not accidentally released even when another object collides with the tip of the operation lever. SOLUTION: An operating lever 3 is connected to bearing plate portions 2 of a base plate 1 by a first pivot shaft 4, and a latch arm 5 is connected to a second pivot shaft 6.
Is connected to the operation lever 3 with the guide plate portion 10 of the base plate 1.
The protruding plate portion 1 of the lock plate 11 in the slot 13 of
2 and 12 are fitted and inserted into the lock plate 20 of the receiving plate 19 fixed to the operation lever 3, and the lock cutout 21 is provided so that the lock cutout 21 and the projecting plate 12 are engaged with each other by sliding the compression coil spring 18. A push plate 14 which is held by a dynamic urging force and which is used to release the engagement is arranged in the back side cavity portion 9 of the operation lever 3.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

 The present invention relates to a latching device used for a device storage box or the like.

[0002]

[Prior art]

 In the conventional latching device disclosed in Japanese Utility Model Laid-Open No. 61-176375, the base end portion of the operating lever is connected to the bearing plate portion projecting from one end portion of the base plate by the first pivot, and the base end portion of the latch arm is provided. Part is connected to the intermediate part of the operating lever by the second pivot, and the second axis is locked by the latch in the locked and locked state where the hook part at the tip of the latch arm is engaged by the locking end of the latch. The first axis and the second axis are arranged so as to be closer to the base plate than the straight line passing through the end and the first axis.

In this conventional device, since there is no means for locking the operation lever on the base plate, another object collides with the tip of the operation lever, and the operation lever is pulled up and rotated about the first axis. When it is pushed, there is a risk that the engagement between the latch arm and the catch will be unintentionally released, and the locking of the wing body with respect to the fixed frame will be accidentally released.

[0004]

[Problems to be solved by the device]

 SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a latching device in which the locking / locking is not accidentally released even if another instrument collides with the tip of the operating lever.

[0005]

[Means for Solving the Problems]

 Referring to the reference numerals in the accompanying drawings, the latch device of the present invention will be described with reference to the bearing plate portions 2 and 2 projecting from one end portion of the base plate 1 and the base end portion of the operation lever 3 being the first. It is connected by a pivot 4, and the base end of the latch arm 5 is connected by the second pivot 6 to the intermediate portion of the operating lever 3, and the tip hook 7 of the latch arm 5 is engaged with the locking end 8a of the catch 8. In the locked and locked state, the first pivot shaft 4 and the second pivot shaft 6 are moved so that the second pivot shaft 6 comes closer to the base plate 1 side than the straight line passing through the locking end portion 8a of the receiving metal 8 and the first pivot shaft 4. Deploy.

At the other end of the base plate 1, guide plate portions 10 and 10 which enter the back side cavity portion 9 of the operation lever 3 are provided in a protruding manner, and the protruding plate portions 12 and 12 of the lock plate 11 are slidably fitted. The slots 13 and 13 to be inserted are provided in the guide plate portions 10 and 10 in the length direction of the base plate 1, and the base end portion of the push plate 14 fixed to the lock plate 11 is close to the finger hooking end portion 3a of the operation lever 3. Let me place it.

The spring support plate portion 15 at the tip of the push plate 14 is slidably inserted into the through hole 17 of the spring receiving plate 16 protruding from the intermediate portion of the base plate 1 and fitted to the spring support plate portion 15. The coil spring 18 is compressed between the end surface 14a of the push plate 14 and the spring receiving plate portion 16 so that the projecting plate portion 12 abuts the inner wall surface 13a of the slot 13 farther from the first pivot 4. The push plate 14 is biased by sliding.

Locking plate portions 20 and 20 projecting from the back side cavity 9 are provided on a receiving plate 19 fixed to the operation lever 3, and a lock plate 11 is provided on a side edge portion of the locking plate portions 20 and 20. The locking cutouts 21 and 21 are provided to engage and disengage the protruding plate parts 12 and 12, and the tip end of each locking plate part 20 is brought into sliding contact with the edge surface 12a of the protruding plate part 12 of the lock plate 11 to 1 A cam slope 22 for sliding the lock plate 11 along the slot 13 toward the inner wall surface 13b closer to the pivot 4 is provided adjacent to the lock cutout 21.

The base plate 1 is fixed to, for example, a wing tie 25, and the receiving metal 8 is fixed to a fixed frame 26. When the wing body 25 is closed and locked by the fixed frame 26, the operation lever 3 is laid down toward the base plate 1, and the second pivot 6 is locked by the catch 8 as shown in FIG. It is closer to the base plate 1 than the straight line passing through the end 8a and the first pivot 4. The guide plate portions 10, 10 of the base plate 1 are inserted into the back side cavity portion 9 of the operation lever 3, and the locking plate portions 20, 20 of the receiving plate 19 fixed to the operation lever 3 are the guide plate portions 10, 20. It faces the outside of 10.

Locking notches 21 and 21 of the locking plate portions 20 and 20 are engaged with the overhanging plate portions 12 and 12 of the lock plate 11 which are inserted into the slots 13 and 13 of the guide plate portions 10 and 10. ing. Since each protruding plate portion 12 is biased by the coil spring 18 toward the slot inner wall surface 13a farther from the first pivot 4, the lock notch 21 and the protruding plate portion 12 are firmly engaged with each other. The operation lever 3 is held and locked to the base plate 1 by locking. Therefore, the wing body 25 is maintained in a locked state with respect to the fixed frame 26.

In order to unlock the lock and release the wing body 20, the push plate 14 integrated with the lock plate 11 is pushed along the slot 13 of the guide plate portion 10 toward the first pivot 4 side with a fingertip. Good. Since the projecting plate portion 12 of the lock plate 11 slides on the opposite side of the slot 13 toward the inner wall surface 13b by a predetermined stroke, the projecting plate portion 12 escapes from the lock cutout 21 of the lock plate 20. The locking and locking of the operation lever 3 with respect to the base plate 1 is released.

Therefore, while the push plate 14 is held at the pushed-in position, a finger is hung on the finger-hooking end 3a to pull up the operation lever 3 about the first pivot 4 and rotate it. Pushing of the push plate 14 is released when the operation lever 3 is rotated to an angle at which the lock notch 21 and the projecting plate portion 12 are not re-engaged. When the push is released, the lock plate 11 is automatically returned to the position where the projecting plate portion 12 contacts the inner wall surface 13a of the slot by the action of the coil spring 18.

By further pulling up and rotating the operation lever 3 with respect to the base plate 1, the second pivot 6 moves to the front of the base plate 1, so that the latch arm 5 tilted about the second pivot 6 is rotated. The tip hook portion 7 is disengaged from the locking end portion 8a of the receiving metal 8. As a result, the locking and locking of the wing body 25 with respect to the fixed frame 26 is released, and the wing body 25 is operated to be released by pulling the operating lever 3 or another prepared handle.

After the required work is completed, the wing body 20 is closed, and then the operation lever 3 is pushed down and rotated about the first pivot 4, so that the tip hook portion 7 of the latch arm 5 is fixed to the fixed frame 21. The second pivot 6 is located closer to the base plate 1 than the straight line passing through the locking end 8a of the receiving metal 8 and the first pivot 4 while approaching the locking end 8a of the receiving metal 8 while slidingly contacting the face plate 33. When it comes, the tip hook portion 7 deeply engages with the locking end portion 8a, and the wing body 25 is locked and locked to the fixed frame 26.

At the final stage of the pushing down rotation of the operating lever 3, the cam slope 22 of the lock plate 20 slides on the edge 12 a of the overhang plate 12 of the lock plate 11 to move the lock plate 11 to the first position. It is slid toward the inner wall surface 13b closer to the pivot 4. When the pushing down rotation of the operation lever 3 is completed, the overhanging plate portion 12 comes to the position facing the opening end of the lock notch 21, and at that moment, the overhanging plate portion 12 is locked by the bias of the coil spring 18. 21 is automatically engaged, and the operating lever 3 is again restrained against the base plate 1.

[0016]

[Embodiment of device]

 In the illustrated embodiment, the base plate 1 is fixed to the wing body 25 by fasteners 277 such as screws passing through the four mounting holes 23, and the catch 8 is a fastener such as screws passing through the two mounting holes 24. It is fixed to the fixed frame 26 by 28. A pair of upper and lower bearing plate portions 2 of the base plate 1 are projected and a transverse pivot 4 is fitted into the right end portions of a pair of upper and lower side wall plate portions 34 and 34 of the operating lever 3. The transverse pivot 6 is fitted into the middle portion of the upper and lower side wall plate portions 34, 34 of the operating lever 3 and the left end portions of the pair of upper and lower side wall plate portions 35, 35 of the latch arm 5.

Although the lock plate 11 and the push plate 14 can be manufactured integrally, in the illustrated embodiment, the lock plate 11 and the push plate 14 are bonded to each other by spot welding and fixed by a spot welding, and a fixing tool 29 such as a rivet. Are connected further. The spring receiving plate 16 can be made integrally with the base plate 1 by cutting and raising, but in this embodiment, the blade receiving plate 16 and the base plate 1 are made as separate members and the positioning of the base plate 1 is performed. After fitting the positioning hole 31 of the spring receiving plate 16 to the protrusion 30, the spring receiving plate 16 is fixed to the base plate with screws 32.

The receiving plate 19 and the operating lever 3 can be made as a single body, but in the present embodiment, they are made as separate bodies and are fixed to each other by spot welding. The receiving plate 19 is provided with a pair of upper and lower reinforcing plate portions 36, 36 into which the second pivot 6 is fitted and inserted. The push plate 14 is provided with a wide finger contact plate portion 14a bent to the back side.

[0019]

[Effect of device]

 As described above, in the latch device of the present invention, the base end portion of the operating lever 3 is connected to the bearing plate portions 2 and 2 at one end portion of the base plate 1 by the first pivot shaft 4, and the base end portion of the latch arm 5 is connected to the first end portion. 2 The protrusion plate portion 12 of the lock plate 11 connected to the intermediate portion of the operation lever 3 by the pivot 6 and fitted into the slots 13, 13 of the guide plate portions 10 1, 10 of the base plate 1 is fixed to the operation lever 3. By engaging the lock notches 21 and 21 of the lock plate portions 20 and 20 of the receiving plate 19 and holding this engagement by the sliding bias of the compression coil spring 18, the operation lever 3 is attached to the base plate 1. Since it can be locked and the push plate 14 for releasing the engagement between the lock plate 11 and the receiving plate 19 is arranged in the rear cavity 9 of the operation lever 3, Collision of other objects Is lifted rotated by engaging lock is prevented from being released accidentally operating lever 3 by.

[Brief description of drawings]

FIG. 1 is a front view of a latching device according to an embodiment of the present invention in a locked state.

FIG. 2 is a rear view of the latch device.

FIG. 3 is a bottom view of the latch device.

4 is a cross-sectional view taken along the line AA of FIG.

5 is a sectional view taken along line BB of FIG.

[Explanation of symbols]

 1 Base Plate 2 Bearing Plate Part 3 Operation Lever 4 First Axis 5 Latch Arm 6 Second Axis 7 Latch Arm Tip Hook 8 Receiving 8a Receiving Lock End 9 Operating Lever Rear Side Cavity 10 Base Plate Guide plate part 11 Lock plate 12 Overhang plate part of lock plate 13 Slot of guide plate part 14 Push plate 15 Spring support plate part of push plate 16 Spring receiving plate 17 Through hole of spring receiving plate 18 Compression coil spring 19 Receiving plate 20 Lock plate part of receiving plate 21 Lock notch of lock plate part 22 Slope part of cam of lock plate part

Claims (1)

[Scope of utility model registration request] 1. A base plate 1 is connected to a bearing plate portion 2, 2 protruding from one end portion of a base plate 1 by a first pivot shaft 4, and a base end portion of a latch arm 5 is connected by a second pivot shaft 6. When the second hook 6 is connected to the intermediate portion of the operating lever 3 and the hook portion 7 of the latch arm 5 is engaged with the engaging end portion 8a of the catch 8, the second pivot shaft 6 is engaged by the catch 8 The first plate should be located closer to the base plate 1 than the straight line passing through the end 8a and the first pivot 4.
The guide plate portion 1 in which the pivot shaft 4 and the second pivot shaft 6 are arranged and which is inserted into the rear side cavity portion 9 of the operation lever 3 at the other end portion of the base plate 1.
Slots 13 and 13 in which 0 and 10 are provided so that the projecting plate portions 12 and 12 of the lock plate 11 are slidably inserted.
The push plate 1 fixed to the lock plate 11 is provided with the guide plate portions 10 and 10 along the length direction of the base plate 1.
The spring support plate 16 is provided by arranging the base end part 4 of the switch 4 close to the finger-hanging end part 3a of the operation lever 3 and projecting the spring support plate part 15 at the tip part of the push plate 14 in the intermediate part of the base plate 1.
The coil spring 18, which is slidably inserted into the through hole 17 of the push plate 14 and is fitted to the spring support plate portion 15, is compressed between the end surface 14a of the push plate 14 and the spring receiving plate portion 16 so that the projecting plate portion 12 is moved to the first position. 1 The push plate 14 is slidably biased so as to come into contact with the inner wall surface 13a of the slot 13 farther from the pivot 4, and the money receiving plate 19 fixed to the operation lever 3 is provided.
Locking plate portions 20 and 20 projecting from the back side cavity portion 9 are provided in a protruding manner, and a lock plate 11 is provided at a side edge portion of the locking plate portions 20 and 20.
Locking notches 21 and 2 with which the protruding plate portions 12 and 12 of the
1 is provided, and the lock plate 1 is provided at the tip of each lock plate 20.
The cam slope portion 22 that slides in contact with the edge surface 12a of the projecting plate portion 12 and slides the lock plate 11 along the slot 13 toward the inner wall surface 13b closer to the first pivot 4.
The latching device provided adjacent to the lock notch 21.