Lock-case-free low-cost backrest lock
By canceling the design of the lock shell, using rotatable locking assembly and lock body assembly, combined with the stop assembly and lock body torsion spring, the challenges of traditional seat back lock cost and production efficiency are solved, achieving low cost and high efficiency. Safe seat back lock system.
Patent Information
- Application Number
- CN202520054061.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-10
- Publication Date
- 2025-02-25
- Estimated Expiration
- 2035-01-10
AI Technical Summary
Traditional seat back locks have challenges in cost, production efficiency and safety, especially in the new energy vehicle market, car companies are increasingly strict in cost control of parts.
Design a low-cost backrest lock without lock shell. By canceling the setting of the lock shell, it adopts the structure of the cover plate, lock assembly and lock body assembly. The lock assembly and lock body assembly can be rotatably installed on the cover plate surface, combined with stopping The components and lock body torsion springs enable unlocking and locking functions.
Reduces production costs, simplifies structural design, improves production efficiency, and ensures the safety and reliability of locks.
Smart Images
Figure CN222522517U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a lock, in particular to a low-cost backrest lock without a lock shell. Background Art
[0002] With the development of the global automobile industry, consumers have higher and higher requirements for the comfort, safety and cost-effectiveness of automobiles. As one of the key components in the interior of the car that most directly affects the comfort and safety of passengers, the design and function of seats are becoming increasingly important in automobile manufacturing. The comfort and flexibility of automobile seats need to be further improved, while also requiring reasonable cost control.
[0003] At present, with the increasing market demand for low-cost, high-reliability seat systems, traditional seat back locks often face certain challenges in terms of cost, production efficiency and safety. Especially in the context of increasingly fierce competition in the new energy vehicle market, automakers are increasingly strict with the cost control of parts. The need to design a low-cost, efficient, safe and easy-to-produce seat back lock system has become an important direction of market demand. Therefore, a low-cost back lock without a lock shell is needed, which has low manufacturing cost and is easy to produce.
[0004] In view of the above reasons, how to reduce production costs is exactly the issue considered in this application. Utility Model Content
[0005] In view of the shortcomings of the prior art, a low-cost backrest lock without a lock shell is provided, which has low manufacturing cost and is easy to produce.
[0006] To achieve the above-mentioned purpose, the following technical solution is provided: a low-cost backrest lock without a lock shell, comprising a cover plate, a locking assembly and a lock body assembly, wherein both the locking assembly and the lock body assembly can be rotatably mounted on the surface of the cover plate, the locking assembly is used to limit the unlocking of the lock body assembly, the lock body assembly is connected to a lock body torsion spring, one end of the lock body torsion spring is connected to the cover plate, and the other end cooperates with the lock body assembly to drive the lock body assembly to unlock.
[0007] The locking assembly is connected with a stop assembly, and the stop assembly is used to limit the rotation of the lock body assembly. The stop assembly rotates coaxially with the locking assembly.
[0008] The cover plate is fixedly connected with a first rotating shaft and a second rotating shaft, the first rotating shaft is used for installing the lock body assembly, and the second rotating shaft is used for installing the stop assembly and the locking assembly.
[0009] The cover plate is made of metal, and the first rotating shaft and the second rotating shaft are riveted on the cover plate.
[0010] In summary, the above technical solution has the following beneficial effects: compared with the traditional closed backrest lock, in addition to the cover plate, an additional lock shell is required. On the one hand, the lock shell and the cover plate form a closed space to play a protective role. On the other hand, when the stopper assembly and the lock body assembly are separately arranged, a larger installation space is required, and the stopper assembly and the locking assembly are arranged on the same horizontal plane. However, in actual use, since the backrest lock is directly installed at the rotation position of the backrest, the cover plate can directly form a closed space with the backrest, which can also play a protective role, and the elimination of the lock shell can also reduce the production cost. In addition, since the locking assembly is a component that limits the lock body assembly to unlock or lock, and the stopper assembly is used as a connecting medium, space can be saved by setting the stopper assembly and the locking assembly to rotate coaxially, so that the actual volume of the cover plate can be further reduced, thereby achieving the purpose of low manufacturing cost and easy production.
[0011] In addition, the cover plate is usually made of high-strength plastic and other materials, but when it needs to be connected to a backrest chair with special functions, higher strength is required. At this time, it is necessary to strengthen the connection strength between the first rotating shaft and the second rotating shaft and the cover plate by riveting, but plastic material is not suitable for riveting, so the cover plate is made of metal material;
[0012] The utility model reduces production cost by eliminating the lock shell, and then coaxially rotates the stop assembly and the locking assembly, thereby reducing the actual volume of the cover plate, further reducing manufacturing cost, and the low cost makes it easier to produce on an assembly line. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a three-dimensional structural schematic diagram of a low-cost backrest lock without a lock shell;
[0014] Figure 2 It is an exploded view of the utility model.
[0015] Reference numerals: 1, cover plate; 2, stop assembly; 3, locking assembly; 4, lock body assembly;
[0016] 11. Groove; 12. Plastic coating of cover plate;
[0017] 21. Stop hook; 22. Stop torsion spring; 23. Second rotating shaft; 24. Limiting member; 25. Convex ring; 26. Retaining edge;
[0018] 31. Locking plate; 32. Locking torsion spring; 33. Eccentric wheel; 34. Baffle;
[0019] 41. Lock leaf; 42. Lock body torsion spring; 43. First rotating shaft; 44. Boss. DETAILED DESCRIPTION
[0020] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. The same parts are represented by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the accompanying drawings, and the words "bottom surface" and "top surface", "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively.
[0021] Reference Figure 1-2 As shown, a low-cost backrest lock without a lock shell includes a cover plate 1, a locking assembly 3 and a lock body assembly 4. The locking assembly 3 and the lock body assembly 4 can be rotatably installed on the surface of the cover plate 1. The locking assembly 3 is used to limit the unlocking of the lock body assembly 4. The lock body assembly 4 is connected to a lock body torsion spring 42. One end of the lock body torsion spring 42 is connected to the cover plate 1, and the other end cooperates with the lock body assembly 4 to drive the lock body 4 assembly to unlock.
[0022] The locking assembly 3 is connected to the stopping assembly 2 . The stopping assembly 2 is used to limit the rotation of the lock body assembly 4 . The stopping assembly 2 rotates coaxially with the locking assembly 3 .
[0023] The cover plate 1 is fixedly connected with a first rotating shaft 43 and a second rotating shaft 23 . The first rotating shaft 43 is used for installing the lock body assembly 4 , and the second rotating shaft 23 is used for installing the stop assembly 2 and the locking assembly 3 .
[0024] The cover plate 1 is made of metal, and the first rotating shaft 43 and the second rotating shaft 23 are both riveted on the cover plate 1 .
[0025] Compared with the traditional closed backrest lock, in addition to the cover plate 1, an additional lock shell is required. On the one hand, the lock shell and the cover plate 1 form a closed space to play a protective role. On the other hand, the stop assembly 2 and the lock body assembly 4 need a larger installation space when they are separately arranged, and the stop assembly 2 and the locking assembly 3 are arranged on the same horizontal plane. However, in actual use, since the backrest lock is directly installed at the rotation position of the backrest, the cover plate 1 can directly form a closed space with the backrest, which can also play a protective role, and the elimination of the lock shell can also reduce the production cost. In addition, since the locking assembly 3 is a component that limits the lock body assembly 4 to unlock or lock, and the stop assembly 2 is used as a connecting medium, it is possible to save space by setting the stop assembly 2 and the locking assembly 3 to rotate coaxially, so that the actual volume of the cover plate 1 can be further reduced, thereby achieving the purpose of low manufacturing cost and easy production.
[0026] In addition, the cover plate 1 is usually made of high-strength plastic or other materials, but when it needs to be connected to a backrest chair with special functions, higher strength is required. In this case, it is necessary to strengthen the connection strength between the first rotating shaft 43 and the second rotating shaft 23 and the cover plate 1 by riveting, but plastic material is not suitable for riveting, so the cover plate 1 is made of metal material;
[0027] The utility model reduces production costs by eliminating the lock shell, and then coaxially rotates the stop assembly 2 and the locking assembly 3, thereby reducing the actual volume of the cover plate 1, further reducing manufacturing costs, and the low cost makes it easier to produce on an assembly line.
[0028] Furthermore, the lock body assembly 4 also includes a lock leaf 41 , and one end of the lock body torsion spring 42 away from the cover plate 1 abuts against the lock leaf 41 , and the lock leaf 41 is used to realize the unlocking and locking functions.
[0029] Furthermore, the lock body assembly 4 also includes a first rotating shaft 43 , the first rotating shaft 43 is fixedly connected to the cover plate 1 , the lock body torsion spring 42 is sleeved on the first rotating shaft 43 , and the lock leaf 41 is rotatably connected to the first rotating shaft 43 .
[0030] Furthermore, the stop assembly 2 includes a stop hook 21 and a stop torsion spring 22, the two ends of the stop torsion spring 22 are respectively abutted against the cover plate 1 and the stop hook 21, the stop hook 21 is used to cooperate with the lock leaf 41 to realize the unlocking function, the stop torsion spring 22 is sleeved on the second rotating shaft 23, and the stop hook 21 is rotationally connected to the second rotating shaft 23.
[0031] Furthermore, the stop assembly 2 also includes a limiting member 24, which includes a convex ring 25 and a retaining edge 26. The limiting member 24 is connected to the upper end of the stop torsion spring 22, the stop torsion spring 22 is sleeved on the convex ring 25, and the retaining edge 26 is used to limit the deformation or movement of the stop torsion spring 22.
[0032] Furthermore, the locking assembly 3 includes a locking plate 31 and a locking torsion spring 32. The two ends of the locking torsion spring 32 are respectively abutted against the cover plate 1 and the locking plate 31. The locking torsion spring 32 is used to drive the locking plate 31 to abut against the locking leaf 41 and limit the locking leaf 41 from being unlocked. The locking torsion spring 32 is sleeved on the second rotating shaft 23, and the locking plate 31 is rotationally connected to the second rotating shaft 23.
[0033] Furthermore, the locking assembly 3 further includes an eccentric wheel 33, which is fixedly connected to the locking piece 31, and the lock body assembly 4 further includes a boss 44, which is fixedly connected to the locking leaf 41;
[0034] When locked, the eccentric wheel 33 cooperates with the boss 44 to form a tolerance space.
[0035] Furthermore, the locking assembly 3 also includes a baffle 34, and the baffle 34 is fixedly connected to the locking piece 31;
[0036] When the baffle 34 abuts against the stop hook 21, the stop hook 21 drives the locking plate 31 to rotate;
[0037] Furthermore, the cover plate 1 is provided with a groove 11 or a through hole for connecting the end of the lock body torsion spring 42 .
[0038] Furthermore, the cover plate 1 is also fixedly connected with a cover plate overmolding 12 .
[0039] Compared with the traditional closed backrest lock, the lock adopts a structure without the lock shell, and directly fixes the lock body torsion spring 42, the stop torsion spring 22 and the locking torsion spring 32 to the cover plate 1, so that the overall structure is simpler and lighter, but the functions can be fully covered, which plays the role of eliminating the lock shell and reducing production costs;
[0040] The stop hook 21 and the lock leaf 41 assembly are the core structure. With the engagement of the stop torsion spring 22 and the mentioned torsion spring, the unlocking and locking functions can be realized. When locking, the eccentric wheel 33 and the lock leaf 41 boss 44 structure cooperate, thereby providing a larger tolerance space for the lock bolt. At the same time, the unlocking process of the lock leaf 41 can perfectly match the motion trajectory of the seat flipping, ensuring reliable locking and avoiding the situation of asynchronous locking.
[0041] The cover plate 1, the first rotating shaft 43 and the second rotating shaft 23 are fixed to form the main external frame of the lock body. The two rotating shafts are mainly used as the rotation centers of the stop hook 21, the locking plate 31 and the locking leaf 41. During installation, the locking plate 31, the stop hook 21 and the locking leaf 41 need to be calculated respectively, so as to design matching stop torsion springs 22, lifting torsion springs and locking torsion springs 32 to provide the necessary torque. The grooves 11 are mainly distributed at the fixing places on both sides of the cover plate 1 and the bottom of the cover plate. The stop torsion springs 22, lifting torsion springs and locking torsion springs 32 are respectively fixed in different grooves 11;
[0042] The limiting member 24 at the upper end of the torsion spring of the stop hook 21 is mainly used to limit the movement of the torsion spring in space. When the lock bolt moves into the backrest lock to form a lock, the lock bolt will hit the cover plate 1, and the cover plate plastic package 12 can play a good role in buffering and silencing.
[0043] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.
Claims
1. A low-cost backrest lock without a lock shell, characterized in that: It includes a cover plate, a locking assembly, and a lock body assembly. The locking assembly and the lock body assembly can be rotatably installed on the cover plate. The locking assembly is used to limit the unlocking of the lock body assembly. The lock body assembly is connected to a lock body torsion spring. One end of the lock body torsion spring is connected to the cover plate, and the other end cooperates with the lock body assembly to drive the lock body assembly to unlock.
2. A low-cost backrest lock without a lock shell according to claim 1, characterized in that: The locking assembly is connected to a stop assembly, and the stop assembly is used to limit the rotation of the lock body assembly. The stop assembly rotates coaxially with the locking assembly.
3. A low-cost backrest lock without a lock shell according to claim 2, characterized in that: The cover plate is provided with a groove or a through hole for connecting the end of the lock body torsion spring.
4. A low-cost backrest lock without a lock shell according to claim 3, characterized in that: The cover plate is fixedly connected with a first rotating shaft and a second rotating shaft, the first rotating shaft is used for installing the lock body assembly, and the second rotating shaft is used for installing the stop assembly and the locking assembly.
5. A low-cost backrest lock without a lock shell according to claim 4, characterized in that: The cover plate is made of metal, and the first rotating shaft and the second rotating shaft are riveted on the cover plate.
6. A low-cost backrest lock without a lock shell according to any one of claims 2 to 4, characterized in that: The lock body assembly includes a lock leaf, one end of the lock body torsion spring away from the cover plate abuts against the lock leaf, the lock leaf is used to achieve unlocking and locking functions, the lock body torsion spring is sleeved on the first rotating shaft, and the lock leaf is rotatably connected to the first rotating shaft.
7. A low-cost backrest lock without a lock shell according to claim 6, characterized in that: The stop assembly includes a stop hook and a stop torsion spring, the two ends of the stop torsion spring are respectively abutted against the cover plate and the stop hook, the stop hook is used to cooperate with the lock leaf to realize the unlocking function, the stop torsion spring is sleeved on the second rotating shaft, and the stop hook is rotatably connected to the second rotating shaft.
8. A low-cost backrest lock without a lock shell according to claim 7, characterized in that: The stop assembly also includes a limiting member, which includes a convex ring and a retaining edge. The limiting member is connected to the upper end of the stop torsion spring, the stop torsion spring is sleeved on the convex ring, and the retaining edge is used to limit the deformation or movement of the stop torsion spring.
9. A low-cost backrest lock without a lock shell according to claim 8, characterized in that: The locking assembly includes a locking plate and a locking torsion spring. The two ends of the locking torsion spring are respectively abutted against the cover plate and the locking plate. The locking torsion spring is used to drive the locking plate to abut against the lock body assembly and limit the unlocking of the lock body assembly. The locking torsion spring is sleeved on the second rotating shaft, and the locking plate is rotatably connected to the second rotating shaft.
10. A low-cost backrest lock without a lock shell according to claim 9, characterized in that: The locking assembly further includes an eccentric wheel, which is fixedly connected to the locking plate; the lock body assembly further includes a boss, which is fixedly connected to the locking blade; and / or, The locking assembly also includes a baffle, which is fixedly connected to the locking piece; When the baffle plate abuts against the stop hook, the stop hook drives the locking plate to rotate.