High-strength welding-free full-plastic-coated lock hook seat lock
By combining a weld-free design with a detachable buffer block, the high production cost and poor adaptability of traditional lock hook structures are solved, achieving high strength and flexibility of the lock hook and improving the stability and comfort of the seat lock.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ANHUI HENGGUO AUTO PARTS CO LTD
- Filing Date
- 2025-06-25
- Publication Date
- 2026-05-01
AI Technical Summary
Traditional welded locking hook structures have high production costs and poor flexibility. The buffer block installation method is inconvenient to replace and has poor adaptability, which affects the stability and comfort of the seat.
The design adopts a welding-free approach, connecting the locking hook with a central shaft rivet. Combined with a detachable buffer block and bolt connection, it enables flexible rotation of the locking hook and replacement of the buffer block, enhancing the load-bearing capacity and buffering performance of the locking hook.
It improves the stability and deformation resistance of the locking hook, reduces noise, enhances the adaptability and service life of the seat lock, and facilitates maintenance and replacement of the buffer block.
Smart Images
Figure CN224184151U_ABST
Abstract
Description
A high-strength, weld-free, fully plastic-encased lock hook for seats. Technical Field
[0001] This utility model relates to the field of seat lock technology, specifically to a high-strength, weld-free, fully plastic-coated lock hook seat lock. Background Technology
[0002] With the rapid development of the automotive industry, the safety and comfort of car seats have gradually become a focus of attention for both consumers and manufacturers. As an important component of car seats, the design and performance of seat locks directly affect the seat's usability and safety. Seat locks not only need to ensure the stability and sturdiness of the seat under various working conditions, but also need to possess good durability and reliability to meet users' high requirements for safety and comfort.
[0003] While traditional welded locking hook structures possess a certain level of strength, their manufacturing process requires specialized welding equipment and techniques, increasing production costs and limiting product flexibility and maintainability. Furthermore, the buffer block, as a key functional component, primarily absorbs the impact force when the locking hook closes, reduces noise, improves structural stability, and enhances overall user comfort. In traditional designs, buffer blocks are often installed using fixed or adhesive methods. While this achieves a certain degree of cushioning, it reveals numerous problems in actual use: for example, the cushioning material ages and cannot be replaced after long-term use; different usage scenarios have varying cushioning performance requirements, leading to poor adaptability; and maintenance and replacement are difficult.
[0004] No effective solutions have yet been proposed to address the problems in the relevant technologies. Summary of the Invention
[0005] In response to the problems in related technologies, this utility model proposes a high-strength, weld-free, fully encased plastic lock hook seat lock to overcome the aforementioned technical problems existing in the existing related technologies.
[0006] Therefore, the specific technical solution adopted by this utility model is as follows:
[0007] A high-strength, weld-free, fully plastic-coated seat lock includes a base, a cover plate on top of the base, a first lock hook and a second lock hook between the base and the cover plate, the first lock hook and the second lock hook being connected between the base and the cover plate by a central shaft rivet, a mounting seat connected below the cover plate, the mounting seat having a mounting groove inside, a buffer block on one side of the mounting groove, a mounting block on one side of the buffer block, and a mounting hole on the mounting block, the cover plate being connected to the mounting seat by bolts, the bolts being connected through the mounting holes.
[0008] Furthermore, a buffer block is located on one side of the first locking hook.
[0009] Furthermore, in order to enable the first locking hook to rotate, a locking plate is provided above the second locking hook. The locking plate is sleeved on the outside of the central shaft rivet. One end of the locking plate is connected to a connecting post, and a return spring is connected to the connecting post. The other end of the return spring is connected to the first locking hook.
[0010] Furthermore, a bushing is fitted on the outside of one of the central shaft rivets, and a torsion spring is fitted on the outside of the bushing.
[0011] Furthermore, one end of the torsion spring is hooked onto the cover plate, and the other end is hooked onto the second locking hook.
[0012] Furthermore, the bushing is located above the locking plate.
[0013] Furthermore, in order to drive the first hook to rotate when the second hook rotates, one side of the first hook abuts against the second hook and the locking plate.
[0014] The beneficial effects of this utility model are as follows:
[0015] (1) This seat lock adopts a weld-free design. The first and second locking hooks are hinged to the base and cover plate by central shaft rivets. The overall structure is compact and the force is evenly distributed, which improves the load-bearing capacity and deformation resistance of the locking hooks, ensuring stability and safety during use. In addition, by setting an installation groove inside the mounting base, a buffer block is set on one side of the first locking hook, and the mounting block is detachably connected to the bolt. This design not only effectively absorbs the impact force generated when the locking hook closes and reduces noise, but also allows for the replacement of buffer blocks of different hardness or materials according to actual needs, improving the adaptability and service life of the product. Attached Figure Description
[0016] 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.
[0017] Figure 1 is a front view of a high-strength weld-free, fully plastic-encased lock hook seat lock according to an embodiment of the present utility model;
[0018] Figure 2 is a side view of a high-strength weld-free, fully plastic-encased lock hook seat lock according to an embodiment of the present utility model;
[0019] Figure 3 is a locking diagram of a high-strength weld-free fully plastic-encased lock hook seat lock according to an embodiment of the present utility model;
[0020] Figure 4 is an unlocking diagram of a high-strength, weld-free, fully plastic-coated lock hook seat lock according to an embodiment of the present invention.
[0021] In the picture:
[0022] 1. Base; 2. Cover plate; 3. First locking hook; 4. Second locking hook; 5. Central shaft rivet; 6. Torsion spring; 7. Mounting seat; 8. Mounting groove; 9. Buffer block; 10. Mounting block; 11. Bolt; 12. Mounting hole; 13. Locking plate; 14. Connecting column; 15. Return tension spring; 16. Bushing. Detailed Implementation
[0023] 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.
[0024] According to an embodiment of the present invention, a high-strength, weld-free, fully plastic-encased lock hook seat lock is provided.
[0025] Example 1
[0026] As shown in Figures 1-4, the high-strength weld-free, fully plastic-coated seat lock according to an embodiment of this utility model includes a base 1. The base 1 is the basic support structure of the entire seat lock device, made of high-strength metal materials (such as cold-rolled steel plate, zinc alloy, etc.), and coated with a layer of plastic material (such as ABS, PP, or TPE) to enhance its wear resistance, corrosion resistance, and noise reduction performance. A cover plate 2 is provided above the base 1. The cover plate 2 also adopts a fully plastic-coated design, which not only protects the internal mechanical structure but also effectively reduces friction noise between metal parts. The first locking hook 3 and the second locking hook 4 are connected between the base 1 and the cover plate 2 by a central shaft rivet 5. The first locking hook 3 and the second locking hook 4 can rotate around the central axis within a certain range to realize locking and unlocking actions. The central shaft rivet 5 is a key component connecting the first locking hook 3, the second locking hook 4, the base 1, and the cover plate 2, penetrating the entire locking hook assembly and connected by riveting. The lock hook is fixed between the base 1 and the cover plate 2 by pressing or fastening, allowing it to rotate flexibly around the axis. A mounting base 7 is connected below the cover plate 2, and the mounting base 7 has a mounting groove 8 inside. A buffer block 9 is provided on one side of the mounting groove 8. The main function of the buffer block 9 is to absorb the impact force generated during locking, reduce noise, and protect the lock hook from excessive wear. A mounting block 10 is provided on one side of the buffer block 9, and a mounting hole 12 is provided on the mounting block 10. The cover plate 2 is connected to the mounting base 7 by bolts 11, and the bolts 11 are connected through the mounting hole 12. The buffer block 9 is located on one side of the first lock hook 3. When installing the buffer block 9, the mounting block 10 on one side of the buffer block 9 can be placed inside the mounting groove 8, and then the bolts 11 can be used to pass through the cover plate 2, the mounting hole 12, and the mounting base 7 to fix the buffer block 8. This design realizes the detachability of the buffer block 9, which is convenient for replacement and maintenance, while ensuring the firmness of the connection.
[0027] As shown in Figures 1-4, a locking plate 13 is provided above the second locking hook 4. The locking plate 13 is sleeved on the outside of the central shaft rivet 5. One end of the locking plate 13 is connected to a connecting post 14, which is used to connect one end of the return spring 15 as a fulcrum for transmitting the spring force. The return spring 15 is connected to the connecting post 14. The other end of the return spring 15 is connected to the first locking hook 3. The return spring 15 can provide a reset force, so that the first locking hook 3 automatically returns to the initial position after unlocking. A bushing 16 is sleeved on the outside of one of the central shaft rivets 5. A torsion spring 6 is sleeved on the outside of the bushing 16, which provides a rotational reset force, so that the second locking hook 4 quickly returns to the closed state after unlocking. It works in conjunction with the return spring 15 to realize the automatic reset function of the double locking hook system. The bushing 16 is located above the locking plate 13. One end of the torsion spring 6 is hooked on the cover plate 2, and the other end is hooked on the second locking hook 4. One side of the first locking hook 3 abuts against the second locking hook 4 and the locking plate 13.
[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, when the user needs to lock the seat, by operating the external control mechanism (such as a lever or button), the locking plate 13 is rotated, causing the first locking hook 3 and the second locking hook 4 to rotate around the central shaft rivet 5. The first locking hook 3 and the second locking hook 4 rotate outwards respectively, causing the return spring 15 to extend and the torsion spring 6 to rotate. After the connecting component is placed between the first locking hook 3 and the second locking hook 4, the lever or button is then released, and the first locking hook 3 automatically returns to its initial position under the action of the return spring 15. The torsion spring 6 provides rotational reset force, causing the second locking hook 4 to quickly return to the closed state, thereby locking the connecting component. In addition, since the buffer block 9 is detachably connected by the mounting block 10 and the bolt 11, it can be easily replaced if it ages or wears after long-term use, ensuring that the lock always has good buffering performance and service life. At the same time, users can also choose buffer blocks 9 of different hardness or materials according to actual needs to adapt to different usage environments and load conditions.
[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 high-strength, weld-free, fully plastic-encased lock hook for seats, characterized in that: The device includes a base (1), a cover plate (2) on top of the base (1), a first locking hook (3) and a second locking hook (4) between the base (1) and the cover plate (2), the first locking hook (3) and the second locking hook (4) being connected between the base (1) and the cover plate (2) by a central shaft rivet (5), a mounting seat (7) being connected below the cover plate (2), a mounting groove (8) being provided inside the mounting seat (7), a buffer block (9) being provided on one side of the mounting groove (8), a mounting block (10) being provided on one side of the buffer block (9), a mounting hole (12) being provided on the mounting block (10), and the cover plate (2) being connected to the mounting seat (7) by a bolt (11), the bolt (11) being connected through the mounting hole (12).
2. The high-strength, weld-free, fully plastic-encased lock hook seat lock according to claim 1, characterized in that, The buffer block (9) is located on one side of the first locking hook (3).
3. A high-strength, weld-free, fully plastic-encased lock hook seat lock according to claim 1, characterized in that, A locking plate (13) is provided above the second locking hook (4). The locking plate (13) is sleeved on the outside of the central shaft rivet (5). One end of the locking plate (13) is connected to a connecting post (14). A return spring (15) is connected to the connecting post (14). The other end of the return spring (15) is connected to the first locking hook (3).
4. A high-strength, weld-free, fully plastic-encased lock hook seat lock according to claim 1, characterized in that, One of the central shaft rivets (5) is fitted with a bushing (16) on the outside, and a torsion spring (6) is fitted on the outside of the bushing (16).
5. A high-strength, weld-free, fully plastic-encased lock hook seat lock according to claim 1, characterized in that, One end of the torsion spring (6) is hooked on the cover plate (2), and the other end is hooked on the second locking hook (4).
6. A high-strength, weld-free, fully plastic-encased lock hook seat lock according to claim 1, characterized in that, The bushing (16) is located above the locking plate (13).
7. A high-strength, weld-free, fully plastic-encased lock hook seat lock according to claim 1, characterized in that, The first locking hook (3) abuts against the second locking hook (4) and the locking plate (13) on one side.