Multi-gear locking mechanism of automobile backrest lock

Abstract

The utility model discloses an automobile backrest lock multi-gear locking mechanism which comprises a cover plate, a handle and a base, the base comprises a mounting seat and a mounting part, the handle is rotatably connected to the mounting seat, a locking head, a first locking plate, a locking hook and a second locking plate are rotatably connected to the interior of the mounting part, inserting grooves are formed in the outer wall of one side of the cover plate and the outer wall of one side of the mounting part, and the first locking plate and the second locking plate are inserted into the inserting grooves. A plurality of guide columns are fixedly mounted in the mounting part, positioning holes are formed in the outer wall of one side of the cover plate, and the cover plate is connected to the guide columns through screws and the positioning holes. According to the multi-gear locking mechanism of the automobile backrest lock, the mounting base and the mounting part of the base are designed to be of an integrated structure, assembling is simpler, the overall strength is higher, and therefore the reliability is higher after assembling is completed, the first locking plate, the locking head, the second locking plate and the locking hook can stably rotate in the mounting part, and the locking effect is better. The shaking generated by the mounting part and the mounting seat during rotation is reduced, so that the abnormal sound in the running process of the vehicle can be reduced as much as possible.

Description

Technical Field

[0001] The utility model relates to the technical field of rear seat backrest locks for automobiles, and particularly to a multi-stage locking mechanism for an automobile backrest lock. Background Art

[0002] In the field of automobile seats, for automobile seats equipped with seat backrest locks, generally, after unlocking, the backrest can be directly reclined. At present, for automobile seat backrest locks on the market, by changing the backrest lock structure, two-stage angle adjustment of the seat backrest has been realized.

[0003] In the prior art, the lock cover of the backrest lock and the outer shell of the handle are connected by a split structure to reduce costs. Due to the use of a split structure for installation, there is an assembly error between each part during assembly, resulting in a large cumulative error after assembly and low overall strength. Furthermore, during driving, the lock cover and the outer shell of the handle shake and generate abnormal noises, affecting the driving experience. Therefore, a multi-stage locking mechanism for an automobile backrest lock is proposed, aiming to solve the problems in the prior art that there is an assembly error between the lock cover and the handle, resulting in a large cumulative error after assembly and low overall strength, and furthermore, during driving, the lock cover and the outer shell of the handle shake and generate abnormal noises. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a multi-stage locking mechanism for an automobile backrest lock, aiming to solve the problems in the prior art that there is an assembly error between the lock cover and the handle, resulting in a large cumulative error after assembly and low overall strength, and furthermore, during driving, the lock cover and the outer shell of the handle shake and generate abnormal noises.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] An automotive backrest lock multi - stage locking mechanism includes a cover plate and a handle, and also includes a base. The base includes a mounting seat and a mounting portion. The handle is rotatably connected to the mounting seat. Inside the mounting portion, a locking head, a first locking plate, a locking hook, and a second locking plate are rotatably connected. Insertion grooves are provided on the outer walls of one side of the cover plate and the mounting portion. Inside the mounting portion, a first rivet and a second rivet are provided. The locking head and the first locking plate are both rotatably connected to the first rivet, and the locking hook and the second locking plate are rotatably connected to the second rivet. One ends of the locking hook and the second locking plate are both in contact with one end of the handle. A first torsion spring is provided between the locking head and the mounting portion, and a second torsion spring is provided between the second locking plate and the mounting portion. A tension spring is provided inside the mounting portion. One end of the second locking plate is connected to the inner wall of the mounting portion through the tension spring. A number of guide posts are fixedly installed inside the mounting portion. A positioning hole is provided on the outer wall of one side of the cover plate, and the cover plate is connected to the guide posts through screws and the positioning hole.

[0007] Preferably, it further includes a movable plate. The movable plate is rotatably connected to the outer wall of the second rivet, and one end of the movable plate is in contact with the handle.

[0008] Preferably, a first notch is provided on the outer wall of one side of the cover plate, and a first bend is provided on the inner wall of one side of the cover plate.

[0009] Preferably, an arc - shaped guide piece is fixedly installed on the outer wall of one side of the first locking head. A plug - in slot is provided on the outer wall of one side of the locking head, and one side of the arc - shaped guide piece is located outside the plug - in slot.

[0010] Preferably, a mounting groove is provided on the outer wall of the handle, and a prompt block is provided inside the mounting groove.

[0011] In the above - mentioned technical solution, an automotive backrest lock multi - stage locking mechanism provided by the present utility model has the following beneficial effects:

[0012] In this utility model, the mounting seat and the mounting part of the base are designed as an integral structure. During assembly, it is simpler and has higher overall strength. Therefore, after assembly, it has a higher reliability. A locking head and a first locking plate are rotatably arranged inside the mounting part. The locking head and the first locking plate are rotated to one side by a first torsion spring, and the locking hook is rotated to one side by a second torsion spring. The locking hook rotates in the opposite direction to the locking head and the first locking plate, so that the locking head, the first locking plate and the locking hook can be abutted against each other. When the lock buckle is inserted into the locking head, it abuts against the locking head and the first locking plate, and drives the locking head and the first locking plate to rotate, so that the second locking plate abuts against the locking head. The lock buckle is located inside the locking head to achieve locking. It can make the first locking plate, the locking head, the second locking plate and the locking hook rotate stably inside the mounting part, reduce the shaking generated by the mounting part and the mounting seat during rotation, and thus can minimize the abnormal noise during vehicle driving as much as possible. Description of the Drawings

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings.

[0014] Figure 1 It is a schematic diagram of the overall three-dimensional structure provided by the embodiment of the present utility model;

[0015] Figure 2 It is a schematic diagram of the assembled structure in the initial state provided by the embodiment of the present utility model;

[0016] Figure 3 It is a schematic diagram of the assembled structure in the first-gear locking state provided by the embodiment of the present utility model;

[0017] Figure 4 It is an exploded view of the first-gear locking state provided by the embodiment of the present utility model;

[0018] Figure 5 It is a schematic diagram of the structure in the first-gear locking state provided by the embodiment of the present utility model;

[0019] Figure 6 It is a schematic diagram of the structure in the second-gear locking state provided by the embodiment of the present utility model;

[0020] Figure 7 It is an exploded view of the second-gear locking state provided by the embodiment of the present utility model;

[0021] Figure 8 It is a schematic diagram of the state of removing the locking hook in the second-gear locking state provided by the embodiment of the present utility model;

[0022] Figure 9Schematic diagram of removing the second locking plate in the second - gear locking state provided by the embodiment of the present utility model.

[0023] Explanation of reference numerals:

[0024] 1. Cover plate; 11. Positioning hole; 12. First notch; 13. First bend; 2. Knob; 22. Prompt block; 3. Base; 31. Mounting seat; 32. Mounting part; 321. First rivet; 322. Second rivet; 33. Locking head; 331. Arc - shaped guide piece; 332. Insertion slot; 34. First locking plate; 35. Locking hook; 36. Second locking plate; 361. Abutting part; 37. Guide post; 38. Movable plate; 381. Abutting port; 4. Insertion groove. Detailed implementation manners

[0025] In order to enable those skilled in the art to better understand the technical solutions of the present utility model, the present utility model will be further introduced in detail below with reference to the drawings.

[0026] Please refer to Figure 1 —9, a multi - gear locking mechanism for an automobile backrest lock, including a cover plate 1 and a knob 2, further including a base 3. The base 3 includes a mounting seat 31 and a mounting part 32. The knob 2 is rotatably connected to the mounting seat 31. Inside the mounting part 32, a locking head 33, a first locking plate 34, a locking hook 35 and a second locking plate 36 are rotatably connected. Insertion grooves 4 are provided on the outer walls of one side of the cover plate 1 and the mounting part 32. Inside the mounting part 32, a first rivet 321 and a second rivet 322 are provided. The locking head 33 and the first locking plate 34 are both rotatably connected to the first rivet 321. The locking hook 35 and the second locking plate 36 are rotatably connected to the second rivet 322. One ends of the locking hook 35 and the second locking plate 36 are both abutted against one end of the knob 2. A first torsion spring is provided between the locking head 33 and the mounting part 32. A second torsion spring is provided between the first locking plate 34 and the mounting part 32. A tension spring is provided inside the mounting part 32. One end of the second locking plate 36 is connected to the inner wall of the mounting part 32 through the tension spring. A plurality of guide posts 37 are fixedly installed inside the mounting part 32. A positioning hole 11 is provided on the outer wall of one side of the cover plate 1. The cover plate 1 is connected to the guide posts 37 through screws and the positioning hole 11.

[0027] Specifically, as Figure 1 shown, the base 3 includes a mounting seat 31 and a mounting part 32. The mounting seat 31 and the mounting part 32 are integrally injection - molded parts, that is, the base 3 is integrally injection - molded. Using the integrally injection - molded base 3 can greatly improve the overall strength, so that during subsequent use, the deformation between the mounting part 32 and the mounting seat 31 can be reduced, and further the abnormal noise generated by the shaking of the mounting part 32 and the mounting seat 31 during vehicle driving can be reduced.

[0028] Furthermore, as Figure 7 shown, a first rivet 321 and a second rivet 322 are installed on the outer wall of one side of the installation part 32. Insertion grooves 4 are formed on the outer walls of both the installation part 32 and one side of the cover plate 1. The first rivet 321 and the second rivet 322 are respectively located on both sides of the insertion groove 4. Among them, the locking head 33 and the first locking plate 34 are both rotatably connected to the first rivet 321, and the locking hook 35 and the second locking plate 36 are both rotatably connected to the second rivet 322. A through groove is formed on the outer wall of one side of the mounting base 31, and the through groove connects the mounting base 31 and the installation part 32. One end of the handle 2 passes through the through groove and is located inside the installation part 32. A first torsion spring is arranged between the locking head 33 and the installation part 32, and a second torsion spring is arranged between the second locking plate 36 and the installation part 32. The first torsion spring drives the locking head 33 to rotate towards the outside of the insertion groove 4, and the second torsion spring drives the second locking plate 36 to rotate towards the outside of the insertion groove 4, so that the second locking plate 36 and the locking head 33 can keep abutting against each other.

[0029] Furthermore, as Figure 5 shown, a tension spring is connected to the inner wall of one side of the installation part 32, and the other end of the tension spring is connected to one end of the locking hook 35. The tension spring drives the end of the locking hook 35 close to the locking head 33 to rotate towards the outside of the insertion groove 4, so as to drive the locking hook 35 to abut against the end of the first locking plate 34.

[0030] As an embodiment provided by the present utility model, as Figure 5 shown, a guide post 37 is arranged on the inner wall of one side of the installation part 32, and a plurality of positioning holes 11 are formed on the outer wall of one side of the cover plate 1. The cover plate 1 is threadedly connected to the guide post 37 through screws and the positioning holes 11. The cover plate 1 and the installation part 32 are connected through screws and the guide post 37, which can enhance the connection strength between the cover plate 1 and the installation part 32 and prevent the cover plate 1 and the installation part 32 from loosening.

[0031] The utility model has an integrated structure design of the mounting seat 31 and the mounting portion 32 of the base 3, which is simpler to assemble and has a higher overall strength. Therefore, it has a higher reliability after the assembly is completed. The locking head 33 and the first locking plate 34 are rotatably arranged inside the mounting portion 32. The locking head 33 and the first locking plate 34 are rotated to one side by the first torsion spring, and the locking hook 35 is rotated to one side by the second torsion spring. The locking hook 35 and the locking head 33 and the first locking plate 34 keep rotating in the opposite direction, so that the locking head 33, the first locking plate 34 and the locking hook 33 can be locked. 5 abuts against each other. When the lock buckle is inserted into the locking head 33, it abuts against the locking head 33 and the first locking plate 34, and drives the locking head 33 and the first locking plate 34 to rotate, so that the second locking plate 36 abuts against the locking head 33. The lock buckle is located inside the locking head 33 to achieve locking, which can make the first locking plate 34, the locking head 33, the second locking plate 36, and the locking hook 35 rotate stably inside the mounting portion 32, reduce the shaking of the mounting portion 32 and the mounting seat 31 during rotation, and thus can minimize the abnormal noise during the driving of the vehicle.

[0032] As a further embodiment provided by the present utility model, Figure 4 As shown, it also includes a movable plate 38. Preferably, the movable plate 38 is rotatably connected to the outer wall of the second rivet 322, and one end of the movable plate 38 abuts against one end of the grab handle 2, so that the movable plate 38 can be driven by the grab handle 2 to keep rotating. An abutment interface 381 is provided on the outer wall of one side of the movable plate 38, and the abutment interface 381 can abut against the outer wall of one side of the locking head 33. When in use, when it is necessary to adjust to the second gear locking, the abutment interface 381 on the movable plate 38 can abut against the outer wall of the locking head 33, so that the locking head 33 remains fixed and the second gear locking state is achieved.

[0033] As a further embodiment provided by the utility model, Figure 3 As shown, a first notch 12 is provided on the outer wall on one side of the cover plate 1, and a first bend 13 is provided on the inner wall on one side of the cover plate 1. Preferably, the first bend 13 is provided on one side of the insertion groove 4 on the cover plate 1, which can enhance the strength of the insertion groove 4 on the cover plate 1 to ensure the service life.

[0034] As a further embodiment provided by the utility model, an installation groove is opened on the outer wall of the handle 2, and a prompt block 22 is arranged inside the installation groove. Preferably, the prompt block 22 is secondary injection molded, and the prompt block 22 and the handle 2 are injection molded with different color materials, replacing the pad printing method used in the prior art, and can prevent fading after long-term use.

[0035] In the initial state, if Figure 2 and Figure 3As shown, under the action of the first torsion spring, the locking head 33 is driven to abut against the guide post 37 inside the mounting portion 32, so that the insertion slot 332 formed on the locking head 33 overlaps with the insertion slot 4 on the cover plate 1 and the mounting portion 32, and the end of the arc-shaped guide piece 331 mounted on the locking head 33 is located inside the insertion slot 4, enabling the locking tongue to be smoothly inserted into the locking head 33 when inserted and abutting against the locking head 33 to drive the locking head 33 to rotate;

[0036] As Figure 1 — Figure 5 shown, when the locking tongue is inserted into the insertion slot 332 inside the locking head 33, the locking tongue can abut against the first locking plate 34, and then while pushing the locking head 33 to rotate, the first locking plate 34 is also pushed to rotate. During the process of the locking tongue pushing the locking head 33 to rotate, the second locking plate 36 is driven to rotate by the outer wall of the arc-shaped structure of the locking head 33, and the locking hook 35 keeps rotating under the drive of the first locking plate 34. There is an abutting portion 361 provided on the outer wall of the second locking plate 36. When the locking head 33 rotates and the second locking plate 36 abuts against the edge of the slot opening of the insertion slot 4 on the locking head 33, under the action of the second torsion spring, the second locking plate 36 is driven to rotate, and the abutting portion 361 on the second locking plate 36 abuts against the edge of the insertion slot 4 on the locking head 33, thereby fixing the locking head 33 and further fixing the position of the locking tongue. As Figure 5 shown, at this time the locking tongue is in the first gear state.

[0037] As Figure 3 — Figure 9 shown, when it is necessary to adjust from the first gear state to the second gear state, first the handle 2 needs to be rotated. When the handle 2 rotates, the end of the handle 2 located inside the mounting portion 32 synchronously drives the locking hook 35, the second locking plate 36, and the movable plate 38 to rotate. At this time, the locking head 33 is in a movable state. Then, by driving the locking tongue to slide downward along the insertion slot 4, the locking head 33 and the first locking plate 34 are further driven to rotate until the locking tongue is located at the bottom of the insertion slot 4. While the locking head 33 rotates, under the action of the second torsion spring, the movable plate 38 abuts against the arc-shaped outer wall of the locking head 33 to prevent the locking head 33 from resetting. At this time, it is in the second gear locking state;

[0038] When unlocking is required, rotate the handle 2 to unlock the locking head 33, and then take out the locking tongue. At this time, under the action of the first torsion spring, the locking head 33 resets.

[0039] Those skilled in the art can understand that other similar connection methods can also implement the present utility model. For example, methods such as welding, bonding, or screwing.

[0040] Only some exemplary embodiments of the present utility model have been described by way of illustration. Without doubt, for those of ordinary skill in the art, the described embodiments can be modified in various different ways without departing from the spirit and scope of the present utility model. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present utility model.

Claims

1. A multi-stage locking mechanism for a car backrest lock, comprising a cover plate (1) and a handle (2), characterized in that: The cover plate (1) and the mounting portion (32) are provided with an insertion groove (4). The mounting portion (32) is provided with a first rivet (321) and a second rivet (322). The locking head (33) and the first locking plate (34) are both rotatably connected to the first rivet (321). The locking hook (35) and the second locking plate (36) are both rotatably connected to the mounting portion (32). The outer wall of one side of the cover plate (1) and the mounting portion (32) is provided with an insertion groove (4). The mounting portion (32) is provided with a first rivet (321) and a second rivet (322). The locking head (33) and the first locking plate (34) are both rotatably connected to the first rivet (321). The locking hook (35) and the second locking plate (36) are both rotatably connected to the second rivet (321). A rivet (322), one end of the locking hook (35) and the second locking plate (36) are both in contact with one end of the grab handle (2), a first torsion spring is provided between the locking head (33) and the mounting portion (32), a second torsion spring is provided between the second locking plate (36) and the mounting portion (32), a tension spring is provided inside the mounting portion (32), one end of the second locking plate (36) is connected to the inner wall of the mounting portion (32) through the tension spring, a plurality of guide columns (37) are fixedly installed inside the mounting portion (32), a positioning hole (11) is provided on the outer wall of one side of the cover plate (1), and the cover plate (1) is connected to the guide column (37) through a screw and the positioning hole (11).

2. The multi-stage locking mechanism for a vehicle backrest lock according to claim 1, characterized in that: It also comprises a movable plate (38), wherein the movable plate (38) is rotatably connected to the outer wall of the second rivet, and one end of the movable plate (38) is kept in contact with the grab handle (2).

3. The multi-stage locking mechanism for a vehicle backrest lock according to claim 1, characterized in that: A first notch (12) is provided on the outer wall of one side of the cover plate (1), and a first bend (13) is provided on the inner wall of one side of the cover plate (1).

4. The multi-stage locking mechanism for a vehicle backrest lock according to claim 1, characterized in that: An arc-shaped guide piece (331) is fixedly mounted on the outer wall of one side of the locking head (33), an insertion groove (332) is provided on the outer wall of one side of the locking head (33), and one side of the arc-shaped guide piece (331) is located outside the insertion groove (332).

5. The multi-stage locking mechanism for a vehicle backrest lock according to claim 1, characterized in that: An installation groove is provided on the outer wall of the handle (2), and a prompt block (22) is arranged inside the installation groove.

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