Backrest lock

Abstract

The utility model relates to a backrest lock, which comprises a cover plate, a stop hook and a lock blade, the stop hook is rotatably arranged on the cover plate, the lock blade comprises a connecting part, a mounting part and a lock hook, a tension spring is connected between the connecting part and one end of the stop hook on the same side, and the cover plate is provided with a lock groove corresponding to the motion trail of the lock hook. The lock hook and the lock groove form an opened or closed locking cavity, and the door lock is characterized in that the locking cavity is provided with a buffer device, so that abnormal sound is eliminated, and noise is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of automobile accessories, specifically relates to a backrest lock. BACKGROUND

[0002] The existing backrest lock usually includes a cover plate, a stop hook rotatably arranged on the cover plate, and a lock leaf, the lock leaf comprises a connecting portion, a mounting portion and a lock hook, a tension spring is arranged between the connecting portion and one end of the stop hook on the same side, the cover plate is provided with a lock slot corresponding to the movement track of the lock hook, the lock hook and the lock slot form a locking cavity for locking the lock bolt, since the locking cavity is larger than the lock bolt, the lock bolt will run in the locking cavity and produce abnormal sound, and the cover plate and the lock hook are both metal parts, when locking the lock bolt, impact will occur and loud noise will be produced. SUMMARY

[0003] The utility model relates to the technical problem that the utility model wants to solve is in view of the deficiency of above -mentioned prior art,

[0004] Provide a backrest lock, eliminate abnormal sound, reduce noise.

[0005] In order to realize the above-mentioned purpose, the utility model provides the following technical scheme: a backrest lock, including cover plate, the stop hook rotatably arranged on the cover plate and the lock leaf, the lock leaf includes connecting portion, mounting portion and lock hook, the connecting portion and one end of the stop hook on the same side are connected with the tension spring, the cover plate is provided with the lock slot corresponding to the movement track of the lock hook, the lock hook and the lock slot constitute the locking cavity that opens or closes, it is characterized by: the locking cavity is equipped with buffer device.

[0006] The utility model further provides: the buffer device includes buffer block, and the buffer block is placed in the locking cavity.

[0007] The utility model with above-mentioned characteristics: buffer block buffering, reduce noise, improve certain friction force simultaneously, prevent the lock bolt from running and produce abnormal sound.

[0008] The utility model further provides: the cover plate is equipped with buffer block box, the buffer block box is arranged on one side of the lock slot, and the buffer block is inserted into the buffer block box.

[0009] The utility model further provides: the buffer block includes the plug-in part of buffer block box plug-in adaptation and the buffer part in the lock slot.

[0010] The utility model with above-mentioned characteristics: buffer block detachable connection, facilitate dismounting.

[0011] The utility model further provides: the buffer block is of flexible material.

[0012] The utility model with above-mentioned characteristics: can absorb impact force.

[0013] The utility model further provides: the buffer block is rubber material quality.

[0014] The utility model of the above-mentioned characteristics: also can adopt polyurethane or polyester and so on material, preferably rubber, can absorb the impact force and reduce noise, can also provide certain friction force to prevent the lock bolt to run and produce abnormal sound.

[0015] The utility model has the advantages of eliminating abnormal sound and reducing noise.

[0016] The utility model will be further explained in detail in connection with the drawings and examples. DESCRIPTION OF DRAWINGS

[0017] Figure 1 For the three-dimensional schematic of the utility model embodiment Figure 1 .

[0018] Figure 2 For the three-dimensional schematic of the utility model embodiment Figure 2 .

[0019] Figure 3 For the three-dimensional schematic of the utility model embodiment buffer block. SPECIFIC EMBODIMENT

[0020] As shown in Figure 1 —— Figure 3 A backrest lock, including cover plate 1, the stop hook 2 of rotation setting on cover plate 1 and lock leaf 3, the lock leaf 3 includes connecting portion 301, installation portion 302 and lock hook 303, connecting portion 301 with the same side one end between stop hook 2 is connected with pull spring 4, the cover plate is set with lock slot 5 corresponding lock hook 303 movement track, lock hook 303 and lock slot 5 constitute the locking cavity 6 of opening or closing, the locking cavity 6 is equipped with buffer device, the buffer device includes buffer block 7, the buffer block 7 is placed in locking cavity 6, cover plate 1 is equipped with buffer block box 8, the buffer block box 8 is set up in lock slot 5 one side, the buffer block 7 is inserted in buffer block box 8, the buffer block 7 includes with the insertion of buffer block box 8 Insertion portion 701 and the buffer portion 702 of being placed in lock slot 5, the buffer block 7 is flexible material, the buffer block 7 is preferably rubber material quality.

Claims

1. A backrest lock, comprising a cover plate, a stop hook rotatably mounted on the cover plate, and a lock leaf, wherein the lock leaf includes a connecting part, a mounting part, and a lock hook, a tension spring is connected between the connecting part and one end of the stop hook on the same side, and a lock groove is formed on the cover plate corresponding to the movement trajectory of the lock hook, the lock hook and the lock groove forming an opening or closing locking cavity, characterized in that: The locking cavity is provided with a buffering device.

2. The backrest lock according to claim 1, characterized in that: The buffering device comprises a buffering block which is arranged in the locking cavity.

3. A backrest lock according to claim 2, characterised in that: The cover plate is provided with a buffering block box which is arranged at one side of the locking slot and the buffering block is inserted into the buffering block box.

4. A backrest lock according to claim 3, characterised in that: The buffering block comprises an insertion part which is adapted to be inserted into the buffering block box and a buffering part which is arranged in the locking slot.

5. A backrest lock according to claim 2 or 3 or 4, characterised in that: The buffering block is made of flexible material.

6. A backrest lock according to claim 5, characterised in that: The buffering block is made of rubber.

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