Miniature light-weight seat backrest lock

Abstract

The utility model discloses a miniature light-weight seat backrest lock which comprises a metal lock box, a protective cover is installed on the surface of the metal lock box, positioning bolts are rotatably installed on the two sides of the protective cover, a first lock plate is rotatably installed on one side of the interior of the metal lock box, a second lock plate is rotatably installed on the other side of the interior of the metal lock box, and a locking groove is formed in one side of the metal lock box. A first limiting groove is formed in one side of the locking groove, a first extrusion part is arranged on one side of the first limiting groove, a second limiting groove is formed in one side of the second locking piece, and a second extrusion part is arranged on one side of the second limiting groove. The backrest lock has the advantages that through mutual transmission between the first locking plate and the second locking plate, after rotation, the side surface of the first extrusion part can be matched with the second limiting groove, the side surface of the second extrusion part can be matched with the first limiting groove, free opening and closing of the backrest lock are achieved, and the backrest lock is simple, compact, easy to operate and high in practicability. And not only is the assembly complexity in the manufacturing process reduced, but also the material cost and the production cost are effectively reduced.

Description

A miniature lightweight seat back lock Technical Field

[0001] This utility model relates to the field of lock technology, specifically to a miniature lightweight seat back lock. Background Technology

[0002] In automotive seating systems, to ensure the seat back can be fixed and adjusted in different usage states and to guarantee passenger safety and comfort, a dedicated backrest lock device is usually installed on one side of the seat back. This backrest lock ensures that the seat back remains stable during normal driving, preventing swaying that could affect passenger experience or even endanger driving safety; at the same time, it can be reliably unlocked when it is necessary to adjust the seat back angle or fold it, thus meeting diverse usage needs.

[0003] However, existing car seat backrest locks have a relatively complex structure, typically composed of multiple parts. The assembly relationships between these parts are intricate, increasing the difficulty of the manufacturing process and placing high demands on the machining precision of the components. This complex structure results in a larger and heavier overall size and weight for the backrest lock. Furthermore, due to the complex structure and numerous parts, the raw material procurement, processing, and assembly costs of existing backrest locks are relatively high. In addition, the complex structure increases the probability of product quality problems, leading to higher after-sales maintenance costs and further increasing the overall cost of using car seat backrest locks.

[0004] No effective solutions have yet been proposed to address the problems in the relevant technologies. Summary of the Invention

[0005] In view of the problems in the related technologies, this utility model proposes a miniature lightweight seat back lock to overcome the above-mentioned technical problems existing in the existing related technologies.

[0006] Therefore, the specific technical solution adopted by this utility model is as follows:

[0007] A miniature lightweight seat back lock includes a metal lock box with a protective cover on its surface. Positioning bolts are rotatably mounted on both sides of the protective cover. A first locking plate is rotatably mounted on one side of the interior of the metal lock box, and a second locking plate is rotatably mounted on the other side. A locking groove is opened on one side of the metal lock box, and a limiting groove is provided on one side of the locking groove. A pressing part is provided on one side of the limiting groove. A second limiting groove is provided on one side of the second locking plate, and a pressing part is provided on one side of the limiting groove.

[0008] Furthermore, in order to achieve mutual transmission between the first locking plate and the second locking plate, a metal hook is connected to one end of the first locking plate, and a pull handle is connected to one end of the second locking plate. A telescopic spring is installed between the metal hook and the pull handle.

[0009] Furthermore, in order to achieve a noise reduction effect when locking the lock bar, a rubber block is installed on one side of the protective cover.

[0010] Furthermore, in order to maintain the open or closed state when the lock is switched on or off, the side surface of the first pressing part cooperates with the second limiting groove, and the side surface of the second pressing part cooperates with the first limiting groove.

[0011] Furthermore, in order to limit the rotation angle of the first and second locking plates, limit baffles are connected to both sides of the metal lock box.

[0012] Furthermore, in order to reduce wear during the rotation of the first and second locking plates, gaskets are installed between the first and second locking plates and the metal lock box.

[0013] Furthermore, to facilitate the tightening of the positioning bolt, a tightening groove is provided on the top of the positioning bolt.

[0014] The beneficial effects of this utility model are as follows: through the mutual transmission between the first locking piece and the second locking piece, the side surface of the first pressing part can be engaged with the second limiting groove after rotation, or the side surface of the second pressing part can be engaged with the first limiting groove, so as to realize the free opening and closing of the seat back lock. The operation method is simple and the lock body structure is simple and compact. It not only reduces the assembly complexity in the manufacturing process, but also effectively reduces material costs and production costs. The miniature and lightweight design occupies little space and is easy to install and disassemble. The portable opening and closing method can effectively improve the user experience. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 is a schematic diagram of the surface structure of a miniature lightweight seat back lock when closed according to an embodiment of the present utility model;

[0017] Figure 2 is a schematic diagram of the surface structure of a miniature lightweight seat back lock when it is opened according to an embodiment of the present invention.

[0018] Figure 3 is a schematic internal cross-sectional view of a miniature lightweight seat back lock when it is opened according to an embodiment of the present utility model;

[0019] Figure 4 is a schematic internal cross-sectional view of a miniature lightweight seat back lock when it is closed, according to an embodiment of the present utility model.

[0020] Figure 5 is an internal cross-sectional side view of a miniature lightweight seat back lock according to an embodiment of the present invention.

[0021] Figure 6 is an internal side view of a miniature lightweight seat back lock according to an embodiment of the present invention.

[0022] In the picture:

[0023] 1. Metal lock box; 2. Protective cover; 3. Positioning bolt; 4. First locking plate; 5. Second locking plate; 6. Locking groove; 7. Limiting groove one; 8. Pressing part one; 9. Limiting groove two; 10. Pressing part two; 11. Metal hook; 12. Pull handle; 13. Telescopic spring; 14. Rubber block; 15. Limiting baffle; 16. Gasket; 17. Tightening groove. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] According to an embodiment of this utility model, a miniature lightweight seat back lock is provided. Embodiment 1:

[0026] As shown in Figures 1-6, a miniature lightweight seat back lock according to an embodiment of the present invention includes a metal lock box 1. A protective cover 2 is installed on the surface of the metal lock box 1. A pair of positioning bolts 3 are rotatably installed on both sides of the protective cover 2, and one end of the positioning bolts 3 slides through the metal lock box 1. A first locking plate 4 is rotatably installed on one side of the interior of the metal lock box 1, and a second locking plate 5 is rotatably installed on the other side. The first locking plate 4 and the second locking plate 5 are rotatably connected to the positioning bolts 3. A locking groove 6 is opened on one side of the metal lock box 1 for placing the locking rod and locking the locking rod. A limiting groove 7 is provided on one side of the locking groove 6, and a pressing part 8 is provided on one side of the limiting groove 7. The pressing part 8 is a metal protrusion on one side of the first locking plate 4. A limiting groove 9 is provided on one side of the second locking plate 5, and a pressing part 10 is provided on one side of the limiting groove 9. The pressing part 10 is a metal protrusion on one side of the second locking plate 5.

[0027] As shown in Figures 1-6, one end of the first locking plate 4 is connected to a metal hook 11, and one end of the second locking plate 5 is connected to a pull handle 12. A telescopic spring 13 is installed between the metal hook 11 and the pull handle 12. By pulling the handle 12, the second locking plate 5 can rotate inside the metal lock box 1. After rotating, the second locking plate 5 can pull the first locking plate 4 to rotate through the telescopic spring 13, realizing the mutual transmission between the first locking plate 4 and the second locking plate 5. A rubber block 14 is installed on one side of the surface of the protective cover 2. When the locking rod is pressed into the locking groove 6, the contact with the rubber block 14 can eliminate the noise when the locking rod is locked. The side surface of the pressing part 18 cooperates with the limiting groove 2 9, and the side surface of the pressing part 2 10 cooperates with the limiting groove 7. When the pressing part 18 When the locking part is installed in the limiting groove 2 9, the limiting groove 2 9 blocks and limits the rotation of the first locking piece 4, so that the locking groove 6 is in the open state, making it convenient to press and lock the locking rod. When the pressing part 2 10 is installed in the limiting groove 1 7, the locking groove 6 is in the closed state, and the pressing part 2 10 can limit the rotation of the first locking piece 4, realizing the limiting and locking of the locking rod. Limiting baffles 15 are connected to both sides of the metal lock box 1 to limit the rotation angle of the first locking piece 4 and the second locking piece 5. Gaskets 16 are installed between the first locking piece 4 and the second locking piece 5 and the metal lock box 1 to reduce the wear of the first locking piece 4 and the second locking piece 5 when they rotate. The top of the positioning bolt 3 has a screwing groove 17 to facilitate the screwing and unscrewing of the positioning bolt 3.

[0028] To facilitate understanding of the above-mentioned technical solutions of this utility model, the working principle or operation method of this utility model in actual process will be described in detail below.

[0029] In summary, with the help of the above-mentioned technical solution of this utility model, in actual use, the telescopic spring 13 enables the first locking plate 4 and the second locking plate 5 to drive each other within the metal lock box 1. When the pressing part 1 8 is installed in the limiting groove 2 9, the limiting groove 2 9 blocks and limits the rotation of the first locking plate 4, so that the locking groove 6 is in the open state. At this time, the locking rod to be locked is pressed into the locking groove 6, so that the locking rod pushes the first locking plate 4 upward. After the first locking plate 4 is pushed, it moves towards the limiting groove 2 9 and the second locking plate 5 through the pressing part 1 8, so that the second locking plate 5 rotates. After that, the pressing part 1 8 slides past the limiting groove 2 9. The second groove 9 and the second pressing part 10 are connected so that the second pressing part 10 enters the limiting groove 7 on one side of the first pressing part 8. At this time, the first locking piece 4, after being rotated, can close the locking groove 6 and limit and lock the internal locking rod. The elastic force of the telescopic spring 13 can maintain this state. When it is necessary to remove the locking rod, the second locking piece 5 is rotated by pulling the handle 12, so that the second pressing part 10 slides out of the limiting groove 1. The elastic force of the telescopic spring 13 can drive the first locking piece 4 to rotate, so that the first pressing part 8 slides back into the limiting groove 9. At the same time, the locking groove 6 opens, so that the locking rod can be easily removed from the locking groove 6.

[0030] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A miniature lightweight seat back lock, characterized in that, The device includes a metal lock box (1), a protective cover (2) installed on the surface of the metal lock box (1), positioning bolts (3) rotatably installed on both sides of the protective cover (2), a first locking plate (4) rotatably installed on one side of the interior of the metal lock box (1), a second locking plate (5) rotatably installed on the other side, a locking groove (6) is opened on one side of the metal lock box (1), a limiting groove one (7) is provided on one side of the locking groove (6), a pressing part one (8) is provided on one side of the limiting groove one (7), a limiting groove two (9) is provided on one side of the second locking plate (5), and a pressing part two (10) is provided on one side of the limiting groove two (9).

2. A micro lightweight seat backrest lock according to claim 1, characterized in that, One end of the first locking plate (4) is connected to a metal hook (11), and one end of the second locking plate (5) is connected to a pull handle (12). A telescopic spring (13) is installed between the metal hook (11) and the pull handle (12).

3. The micro lightweight seat backrest lock according to claim 1, characterized in that, A rubber block (14) is installed on one side of the surface of the protective cover (2).

4. A miniature lightweight seat back lock according to claim 1, characterized in that, The side surface of the extrusion part 1 (8) is engaged with the limiting groove 2 (9), and the side surface of the extrusion part 2 (10) is engaged with the limiting groove 1 (7).

5. The micro lightweight seat backrest lock according to claim 1, characterized in that, Limiting baffles (15) are connected to both sides of the metal lock box (1).

6. The micro lightweight seat backrest lock according to claim 1, characterized in that, Gaskets (16) are installed between the first locking plate (4) and the second locking plate (5) and the metal lock box (1).

7. A miniature lightweight seat back lock according to claim 1, characterized in that, The top of the positioning bolt (3) has a screwing groove (17).

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