Two-gear lock of automobile seat

Abstract

The utility model relates to an automobile seat two-gear lock which comprises a shell, a clamping jaw and a pawl, a lock bolt advancing groove is formed in the shell, the clamping jaw is arranged in the shell in a rotating mode and loads torque through a first torsion spring, a first spring bolt and a second spring bolt are formed on the clamping jaw, and the pawl is arranged on the shell. The pawl is rotationally arranged in the shell and matched with the clamping jaw, torque is loaded through the second torsional spring, and the limiting block is arranged on the shell and located in the tail end of the lock bolt advancing groove. According to the two-gear lock of the automobile seat, different adjusting angles of the backrest of the seat can be achieved by replacing the limiting blocks with different lengths to be matched with the lock bolts with different opening sizes, parts in the lock body do not need to be adjusted and replaced, the development cost is reduced, and the service life of the lock body is prolonged due to the buffering effect of the limiting blocks.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile and motorcycle accessories, in particular to a two-speed lock for an automobile seat. Background Art

[0002] The two-stage car seat lock is installed in the car seat backrest. Through the locking function at two points, the car seat backrest can present two different tilt angles to meet the needs of passengers. However, the car seat backrest angle adjustment achieved by the two-stage car seat lock is two fixed tilt angles. If the seat back adjustment to other tilt angles is to be met, a large number of structural parts in the lock body need to be replaced, which makes the development cost high.

[0003] In view of the above problems, the present invention makes improvements. Utility Model Content

[0004] The utility model provides a two-stage lock for a car seat, which solves the above-mentioned problems existing in the prior art during use.

[0005] The technical solution of the utility model is achieved in this way:

[0006] A two-speed lock for a car seat comprises a shell, a claw and a pawl, wherein a bolt travel groove is provided on the shell, the claw is rotatably arranged in the shell and a torque is loaded through a first torsion spring, a locking groove is provided on the claw, the pawl is rotatably arranged in the shell and cooperates with the claw and a torque is loaded through a second torsion spring, and a limit block is also included, wherein the limit block is arranged on the shell and located at the end of the bolt travel groove.

[0007] Preferably, the shell is provided with a plug-in hole located at one side of the end of the lock bolt travel groove, and the limit block is formed with a mushroom-shaped plug-in post matching the plug-in hole, and the limit block penetrates the lock bolt travel groove to allow the plug-in post to be inserted into the plug-in hole.

[0008] Preferably, a limiting groove is provided on the limiting block, and the shell is inserted into the limiting groove.

[0009] Preferably, the claw is fixedly connected to a column located on one side of the pawl, and a first locking plate coaxial with the pawl and loaded with torque through a third torsion spring is rotatably arranged in the shell. In the locked state, the end of the first locking plate is located on the swing path of the column.

[0010] Preferably, a second locking piece coaxial with the pawl and loaded with torque through a fourth torsion spring is rotatably disposed in the housing, and in a locked state, an end of the second locking piece is located on the swinging path of the pawl.

[0011] Preferably, a baffle plate loaded with torque by a fifth torsion spring is rotatably arranged in the shell, and an abutment protrusion is formed on the side of the baffle plate. When in the unlocked state, the baffle plate swings into the locking bolt travel groove so that the abutment protrusion abuts against the claw.

[0012] Preferably, a first clamping surface in an arc shape with the rotation center of the clamping claw as the center of the circle is formed on the inner wall of the locking groove.

[0013] Preferably, a reinforcing rib is formed on the shell and is located on one side of the claw.

[0014] To sum up, the beneficial effect of the utility model is that by replacing limit blocks of different lengths and matching lock bolts of different openings, the sliding stroke of the lock bolt in the lock bolt travel groove can be adjusted, thereby adjusting the inclination angle of the car seat back when locked, to meet the different needs of passengers without replacing the internal parts of the lock body, thereby reducing the development cost, and the limit block limits the sliding of the lock bolt in the lock bolt travel groove, and when the lock bolt slides to abut against the limit block, the passenger is reminded to release the drive part to lock, which is convenient for adjusting the car seat back, and the limit block provides a buffering effect on the sliding of the lock bolt when the car seat back angle is adjusted, thereby avoiding direct collision between the lock bolt and the shell when the first gear enters the second gear, thereby extending the service life of the lock body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 It is an exploded schematic diagram of the utility model;

[0018] Figure 3 It is a schematic diagram of the structure of the housing and the limit block in the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the baffle in the utility model;

[0020] Figure 5 It is a schematic diagram of the structure of the utility model after removing part of the housing in the first gear locking state;

[0021] Figure 6 It is a schematic diagram of the structure of the utility model after a part of the shell is removed in the unlocked state.

[0022] In the figure: 1. shell; 11. locking bolt travel groove; 12. plug-in hole; 13. reinforcing rib; 2. claw; 21. first torsion spring; 22. locking groove; 23. first clamping surface; 24. column; 3. pawl; 31. second torsion spring; 4. limit block; 41. plug-in pile; 42. limit groove; 5. first locking plate; 51. third torsion spring; 6. second locking plate; 61. fourth torsion spring; 7. baffle; 71. abutment protrusion; 72. fifth torsion spring; 8. locking bolt; 9. driving member. DETAILED DESCRIPTION

[0023] The following will be combined with the attached embodiment of the utility model Figure 1-6 , clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] As shown in the figure, a two-speed lock for a car seat includes a shell 1, a claw 2 and a pawl 3. The shell 1 is provided with a bolt travel groove 11. The claw 2 is rotatably arranged in the shell 1 and loaded with torque through a first torsion spring 21. A locking groove 22 is provided on the claw 2. The pawl 3 is rotatably arranged in the shell 1 to cooperate with the claw 2 and loaded with torque through a second torsion spring 31. It also includes a limit block 4 made of elastic material. The limit block 4 is arranged on the shell 1 at the end of the bolt travel groove 11.

[0025] Specifically, the limit block 4 is arranged on the shell 1: the shell 1 is provided with a plug-in hole 12 located on one side of the end of the lock bolt travel groove 11, and the limit block 4 is formed with a mushroom-shaped plug-in post 41 matching the plug-in hole 12, and the limit block 4 is inserted into the lock bolt travel groove 11 so that the plug-in post 41 is inserted into the plug-in hole 12.

[0026] Specifically, the structure of the cooperation between the pawl 3 and the claw 2 is as follows: a column 24 located on one side of the pawl 3 is fixedly connected to the claw 2, and a first locking plate 5 coaxial with the pawl 3 and loaded with torque through a third torsion spring 51 is rotatably arranged in the shell 1; when in the locked state, the end of the first locking plate 5 is located on the swinging path of the column 24 to limit the column 24 as the claw 2 swings.

[0027] In the above structure, a driving member 9 is swingably provided on the shell 1, which is located on one side of the end of the pawl 3 and the first locking piece 5. The lock body cooperates with the lock bolt 8 fixedly installed on the car seat back to realize the locking of the car seat back angle adjustment. When the angle of the car seat back is adjusted, the swinging driving member 9 drives the first locking piece 5 to swing and releases the limit on the column 24. The lock bolt 8 enters the lock bolt travel groove 11 through the notch of the lock bolt travel groove 11 to force the claw 2 to swing. When one side of the lock bolt 8 is stuck in the locking groove 22, the lock bolt 8 is limited and locked through the locking groove 22. After the driving member 9 is released and the lock is dropped, the first locking piece 5 swings under the action of the second torsion spring 31 so that the end of the first locking piece 5 is located on the path of the column 24 swinging with the claw 2, 24 and swing to apply a limit to the swing of the claw 2, so that the lock bolt 8 is maintained in the locking groove 22, so that the car seat back is stably maintained at the tilt angle of the first gear. When the tilt angle of the car seat back is further adjusted, the driving member 9 is swung to make the driving member 9 drive the first locking piece 5 and the pawl 3 to swing in sequence. The first locking piece 5 first swings so that its end leaves the swing path of the column 24 and releases the limit on the column 24. The pawl 3 then swings to move the column 24 and then drives the claw 2 to swing, so that the lock bolt 8 is disengaged from the locking groove 22. At this time, the lock bolt 8 can slide to the end in the lock bolt travel groove 11 to the position against the limit block 4. At this time, the driving member 9 is released and the lock is dropped. The pawl 3 and the first locking piece 5 are respectively locked at the second torsion spring The locking pawl 2 is then released from the locking groove 22 and the locking pawl 3 is released from the locking groove 22. The locking pawl 3 is then released from the locking groove 22 and the locking pawl 2 is released from the locking groove 22. 4 limits the sliding of the lock bolt 8 in the lock bolt travel groove 11, and when the lock bolt 8 slides to abut against the limit block 4, it reminds the passenger to release the driving member 9 to lock, which is convenient for adjusting the operation of the car seat backrest, and the limit block 4 provides a buffering effect on the sliding of the lock bolt 8 when the car seat backrest angle is adjusted, avoiding the direct collision between the lock bolt 8 and the shell 1 when the first gear enters the second gear, thereby extending the service life of the lock body, and by replacing the limit blocks 4 of different lengths and matching the lock bolts 8 with different openings (i.e., the distance between the two sides of the lock bolt 8), the sliding stroke of the lock bolt 8 in the lock bolt travel groove 11 can be adjusted, thereby adjusting the tilt angle of the car seat back when locked, meeting the different needs of passengers, without having to replace the internal parts of the lock body, reducing the development cost, and,The limit block 4 is fastened to the housing 1 by the cooperation between the plug-in pile 41 and the plug-in hole 12, which is very convenient for the disassembly and assembly of the limit block 4 and the housing 1, and it is convenient to replace the limit block 4 of different lengths.

[0028] In addition, a limiting groove 42 is provided on the limiting block 4 , and the housing 1 is inserted into the limiting groove 42 , thereby strengthening the firmness of the limiting block 4 being fixedly connected to the housing 1 .

[0029] In addition, a second locking plate 6 is rotatably arranged in the shell 1, which is coaxial with the pawl 3 and loaded with torque through a fourth torsion spring 61. When in the locked state, the end of the second locking plate 6 is located on the swinging path of the claw 2 to limit the swinging of the claw 2. The limiting effect of the swinging of the claw 2 by the second locking plate 6 is strengthened to prevent the claw 2 from swinging due to the force and causing the locking bolt 8 to fall out of the locking groove 22, thereby strengthening the stability of the car seat back after being adjusted into place. When unlocking, the driving member 9 can also drive the second locking plate 6 to swing and release the limit on the claw 2.

[0030] In addition, a baffle plate 7 loaded with torque by a fifth torsion spring 72 is rotatably arranged in the housing 1, and an abutment protrusion 71 is formed on the side of the baffle plate 7. When in the unlocked state, the baffle plate 7 swings into the bolt travel groove 11 so that the abutment protrusion 71 abuts against the claw 2. Figure 6 The locking cam 71 is pressed against the locking cam 72 to release the locking cam 22, and the locking cam 22 is locked.

[0031] In addition, a first clamping surface 23 in an arc shape with the rotation center of the claw 2 as the center is formed on the inner wall of the locking groove 22. When the lock bolt 8 is stuck in the locking groove 22 and is subjected to the action of external force and has a tendency to slide outward and unlock, the force exerted on the first clamping surface 23 is obliquely directed to the lower right relative to the swinging path of the claw 2, so that the lock bolt 8 is in close contact with the first clamping surface 23, making it difficult for the lock bolt 8 to unlock, thereby improving the positive strength of the lock body.

[0032] In addition, a reinforcing rib 13 is formed on the shell 1 on one side of the claw 2. The reinforcing rib 13 improves the strength of the shell 1 and makes the shell 1 closer to the claw 2. When performing a lateral strength test on the lock body, it can support the claw 2, thereby improving the lateral strength of the lock body.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A two-speed lock for a car seat, comprising a housing (1), a claw (2) and a pawl (3), wherein the housing (1) is provided with a bolt travel groove (11), the claw (2) is rotatably disposed in the housing (1) and is loaded with torque via a first torsion spring (21), the claw (2) is provided with a locking groove (22), the pawl (3) is rotatably disposed in the housing (1) and is matched with the claw (2) and is loaded with torque via a second torsion spring (31), characterized in that: It also comprises a limit block (4), wherein the limit block (4) is arranged on the housing (1) and located within the end of the lock bolt travel groove (11).

2. The two-stage car seat lock according to claim 1, characterized in that: The housing (1) is provided with a plug-in hole (12) located at one end of the bolt travel groove (11), and the limit block (4) is formed with a mushroom-shaped plug-in post (41) matching the plug-in hole (12). The limit block (4) penetrates into the bolt travel groove (11) so that the plug-in post (41) is inserted into the plug-in hole (12).

3. The two-stage car seat lock according to claim 2, characterized in that: The limiting block (4) is provided with a limiting groove (42), and the housing (1) is snapped into the limiting groove (42).

4. The two-stage car seat lock according to claim 1, characterized in that: The claw (2) is fixedly connected to a column (24) located on one side of the pawl (3); a first locking piece (5) coaxial with the pawl (3) and loaded with torque via a third torsion spring (51) is rotatably arranged in the housing (1); in a locked state, an end of the first locking piece (5) is located on a swinging path of the column (24).

5. The two-speed lock for a car seat according to claim 1, characterized in that: A second locking plate (6) is rotatably disposed in the housing (1) and is coaxial with the ratchet pawl (3) and loaded with torque via a fourth torsion spring (61); the end of the second locking plate (6) is located on the swinging path of the claw (2).

6. The two-stage car seat lock according to claim 1, characterized in that: A baffle (7) loaded with torque via a fifth torsion spring (72) is rotatably disposed in the housing (1), and an abutment protrusion (71) is formed on the side of the baffle (7). In an unlocked state, the baffle (7) swings into the lock bolt travel groove (11) so that the abutment protrusion (71) abuts against the claw (2).

7. The two-speed car seat lock according to claim 1, characterized in that: A first clamping surface (23) in the shape of an arc with the rotation center of the clamping claw (2) as the center of the circle is formed on the inner wall of the locking groove.

8. The two-stage car seat lock according to claim 1, characterized in that: The housing (1) is provided with a reinforcing rib (13) located on one side of the claw (2).

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