Novel automobile door lock rear buckle fixing structure
By incorporating a limiting post, a connecting groove, a nylon rubber ring, and a latex buffer pad, the design solves the problems of easy loosening of the rear latch of the car door lock and inconvenient installation and disassembly. This achieves stability of the fixed structure and a buffering effect, improving the safety of the car door and production efficiency.
Patent Information
- Application Number
- CN202520417320.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-11
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2035-03-11
AI Technical Summary
The existing car door lock rear latch fixing structure is prone to loosening, inconvenient to install and disassemble, and has poor impact resistance, affecting the safety and reliability of the car door.
The design incorporates a limiting post, a mating groove, a nylon rubber ring, and a latex buffer pad. The limiting post and the mounting nut are screwed together, and the friction of the nylon rubber ring prevents loosening. Combined with the latex buffer pad absorbing impact, it achieves rapid positioning and a cushioning effect.
It improves the stability of the door lock latch, simplifies the installation and disassembly process, enhances the safety and reliability of the door, and extends its service life.
Smart Images

Figure CN223854030U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to automobile parts technical field, concretely to a novel automobile door lock back buckle fixing structure. BACKGROUND
[0002] The automobile door lock back buckle is an important part for ensuring the firm and safe closing of the door. In the prior art, the common automobile door lock back buckle fixing structure adopts a simple bolt connection mode. During the driving of the automobile, the bolt is prone to loosening due to the influence of the driving bump, which leads to the unstable fixing of the door lock back buckle and further affects the normal closing and opening of the door, thereby reducing the safety and reliability of the door.
[0003] The traditional structure is relatively cumbersome during the installation and dismounting process, needs professional tools to calibrate alignment, not only increases the difficulty and cost of the automobile maintenance and maintenance, but also is not favorable for the efficient assembly in the automobile production process, and meanwhile the fixing structure has defects in the aspect of the impact force when the door is closed, which is prone to causing the damage of the back buckle and shortening the service life of the part. UTILITY MODEL CONTENT
[0004] The utility model provides a novel automobile door lock back buckle fixing structure, has the advantages such as fixed structure stability, easy installation and dismounting and good buffering effect, to solve the problems such as easy loosening of the prior automobile door lock back buckle fixing structure, inconvenient installation and dismounting and poor impact force bearing capacity.
[0005] To realize the above-mentioned purpose, the utility model provides the following technical scheme: a novel automobile door lock back buckle fixing structure, including the car body door frame and the car door part body arranged at one side of the car body door frame, further including back buckle assembly, installation assembly, anti-loosening assembly, buckle assembly and switch assembly, wherein:
[0006] The car body door frame is provided with a door groove, and the door groove is welded with a fixed plate;
[0007] The back buckle assembly includes a clasp ring, the clasp ring is welded on a clasp plate, the bottom surface of the clasp plate is welded with a plurality of limiting columns, one end of the limiting column is provided with a screw thread, and a butt joint groove is arranged between the limiting columns;
[0008] The fixed plate is provided with a butt joint protrusion, the butt joint protrusion is embedded and matched with the butt joint groove, a latex buffer pad is arranged between the fixed plate and the clasp plate, the anti-loosening assembly includes a nylon rubber ring, the nylon rubber ring is attached to one end of the inner wall of the mounting nut, and a loosening pad is arranged between the mounting nut and the car body door frame.
[0009] As a preferred technical scheme of the utility model, the mounting nut is embedded and screw-coupled with the limiting column, and the limiting column penetrates through the car body door frame and the fixed plate.
[0010] As a preferred technical scheme of the utility model, the buckle assembly comprises two rotating discs symmetrically arranged up and down, and the rotating discs are embedded with rotating shafts at the central parts and are rotationally matched.
[0011] As a preferred technical scheme of the utility model, the rotating disc and the rotating shaft are fixedly connected through a torsion spring, and the rotating shaft is welded on the door body.
[0012] As a preferred technical scheme of the utility model, the rotating disc is provided with a plurality of gear teeth on one side, the gear teeth are provided with arc grooves on one side, and the arc grooves are symmetrically arranged up and down.
[0013] As a preferred technical scheme of the utility model, the switch assembly comprises a locking plate, the locking plate is fixedly connected with a spring on one side, the spring is nested on the outer side of a sliding shaft, the locking plate is penetrated by the sliding shaft and is slidingly matched.
[0014] As a preferred technical scheme of the utility model, the other end of the sliding shaft is fixedly connected with a door handle, and the door handle is embedded in the door body and is rotationally matched.
[0015] Compared with the prior art, the utility model provides a novel automobile door lock rear buckle fixing structure, has the following beneficial effects: the utility model discloses a nylon rubber ring and a lock washer, effectively improves the locking performance of the fixing structure, reduces the nut loosening caused by vibration, ensures that the door lock rear buckle always maintains a firm fixed state, improves the safety and reliability of the door, the novel design of the limiting column, the butt joint groove and the butt joint block realizes quick positioning during the installation and dismounting of the buckle ring, is more simple and fast, reduces the automobile maintenance and maintenance difficulty, improves the automobile production assembly efficiency, and the setting of the latex buffer pad can effectively absorb the impact force generated when the door is closed, reduces the impact on the fixing plate, prolongs the service life of the door lock rear buckle. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 It is the whole structure schematic view of the utility model;
[0017] Figure 2 It is the rear buckle assembly structure diagram of the utility model;
[0018] Figure 3 It is the installation assembly structure schematic view of the utility model;
[0019] Figure 4 It is the lock washer assembly structure diagram of the utility model;
[0020] Figure 5 It is the buckle assembly structure schematic view of the utility model;
[0021] Figure 6 It is the novel structure diagram of the switch assembly of the utility model.
[0022] In the diagram: 1. Door frame; 11. Door groove; 2. Door body; 3. Rear latch assembly; 31. Buckle ring; 32. Buckle plate; 33. Limiting post; 34. Connecting groove; 4. Mounting assembly; 41. Fixing plate; 42. Connecting protrusion; 43. Latex buffer pad; 44. Mounting nut; 5. Anti-loosening assembly; 51. Nylon rubber ring; 52. Anti-loosening pad; 6. Clip assembly; 61. Turntable; 62. Rotating shaft; 63. Torsion spring; 64. Gear tooth; 65. Arc groove; 7. Switch assembly; 71. Locking plate; 72. Spring; 73. Sliding shaft; 74. Door handle. 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. Example 1
[0024] Please see Figures 1-6 This utility model discloses a novel automotive door lock rear latch fixing structure, including a vehicle door frame 1 and a door body 2 disposed on one side of the vehicle door frame 1, and also including a rear latch assembly 3, a mounting assembly 4, an anti-loosening assembly 5, a snap-fit assembly 6, and a switch assembly 7, wherein:
[0025] The vehicle body door frame 1 is provided with a door groove 11, and a fixing plate 41 is welded to the door groove 11;
[0026] Please refer to the appendix. Figure 2 The rear buckle assembly 3 includes a buckle ring 31, which is welded to the buckle plate 32. A number of limiting posts 33 are welded to the bottom surface of the buckle plate 32. One end of the limiting post 33 is provided with a thread, and a mating groove 34 is provided between the limiting posts 33.
[0027] Please refer to the appendix. Figure 4 The fixing plate 41 is provided with a mating protrusion 42, which is embedded in the mating groove 34. A latex buffer pad 43 is installed between the fixing plate 41 and the buckle plate 32. The anti-loosening component 5 includes a nylon rubber ring 51, which is attached to one end of the inner wall of the mounting nut 44. An anti-loosening pad 52 is provided between the mounting nut 44 and the vehicle body door frame 1. Specifically, the latex buffer pad 43 absorbs and buffers the impact force generated when the door is closed, reducing the direct impact on the buckle plate 32 and the fixing plate 41, and improving the service life of the rear buckle component 3.
[0028] The mounting nut 44 is engaged with the limiting post 33 by a screw thread, and the limiting post 33 passes through the vehicle body door frame 1 and the fixing plate 41.
[0029] In the embodiment, the nylon rubber ring 51 on the mounting nut 44 strengthens the friction between the mounting nut 44 and the limiting column 33, avoids the rotation of the mounting nut 44 under shaking, and cooperates with the anti-loosening pad 52 to effectively prevent the loosening between the limiting column 33 and the mounting nut 44 caused by shaking. Embodiment two
[0030] Based on the above embodiment 1, please refer to the attached Figure 5 And Figure 6 The buckle assembly 6 includes two rotating discs 61 symmetrically arranged up and down, and the rotating discs 61 are embedded with rotating shafts 62 at the center parts and are rotationally matched.
[0031] The rotating discs 61 are fixedly connected with the rotating shafts 62 through torsion springs 63, and the rotating shafts 62 are welded on the door part body 2.
[0032] The rotating disc 61 is provided with a plurality of gear teeth 64 on one side, and the gear teeth 64 are provided with arc grooves 65 on one side. The upper and lower arc grooves 65 are symmetrically arranged. Specifically, when the gear teeth 64 rotate with the rotating disc 61, the gear teeth 64 synchronously drive the locking plate 71 to compress the spring 72, so that the locking plate 71 is finally popped into the arc grooves 65.
[0033] The switch assembly 7 includes the locking plate 71, and the locking plate 71 is fixedly connected with the spring 72 on one side. The spring 72 is nested on the outside of the sliding shaft 73, and the locking plate 71 is penetrated and slidably matched with the sliding shaft 73.
[0034] The other end of the sliding shaft 73 is fixedly connected with the door handle 74, and the door handle 74 is embedded in the door part body 2 and is rotationally matched. Specifically, the door handle 74 drives the locking plate 71 to be inclined into the gap between the arc grooves 65 through the sliding shaft 73, so that the rotating disc 61 loses the resistance to rotation.
[0035] In the embodiment, the clasp 31 extrudes the arc grooves 65 of the rotating disc 61 to make the upper and lower rotating discs 61 rotate synchronously. The clasp 31 enters between the arc grooves 65 from one side of the rotating disc 61, and the locking plate 71 enters between the arc grooves 65 from the other side due to the gap generated under the action of the spring 72. At this time, the locking plate 71 clamps the arc grooves 65, prevents the rotating disc 61 from rotating, and the arc grooves 65 cover the clasp 31, thereby realizing the locking of the door part body 2.
[0036] The working principle and use process of the utility model: first, during installation, the latex buffer pad 43 is embedded on the surface of the fixed plate 41, then the clasp ring 31 is picked up to pass the limiting column 33 on the buckle plate 32 into the fixed plate 41, meanwhile, the butt joint lug 42 on the fixed plate 41 and the butt joint groove 34 on the buckle plate 32 are quickly spliced and fixed in position, after the clasp ring 31 is placed stably, the anti-loose pad 52 is sleeved on the limiting column 33, meanwhile, the mounting nut 44 is screw-tightened with the limiting column 33, the nylon rubber ring 51 on the mounting nut 44 strengthens the friction force between the mounting nut 44 and the limiting column 33, avoids the rotary movement of the mounting nut 44 under shaking, and the anti-loose pad 52 can effectively prevent the loosening between the limiting column 33 and the mounting nut 44 caused by shaking;
[0037] When the door is closed, the door part body 2 drives the buckle assembly 6 to move to the clasp ring 31, the clasp ring 31 extrudes the arc groove 65 of the rotating disc 61 to make the upper and lower rotating discs 61 rotate synchronously, when the rotating disc 61 rotates, the torsion spring 63 is deformed to store elastic potential energy, the clasp ring 31 enters between the arc grooves 65 from one side of the rotating disc 61, and the locking plate 71 generates a gap from the other side to enter between the arc grooves 65 under the action of the spring 72, at this time, the locking plate 71 clamps the arc grooves 65, prevents the rotating disc 61 from rotating back, and the arc grooves 65 sleeve the clasp ring 31 to realize the locking of the door part body 2, when the door is closed, the impact force is first absorbed and buffered by the latex buffer pad 43, the direct impact on the buckle plate 32 and the fixed plate 41 is reduced, and the service life of the rear buckle assembly 3 is improved;
[0038] When the door needs to be opened, the door handle 74 is rotated, the door handle 74 drives the locking plate 71 to tilt and enter the gap between the arc grooves 65 through the slide shaft 73, thereby making the rotating disc 61 lose the resistance force of rotating back, the torsion spring 63 drives the rotating disc 61 to rotate back outward at the same time, the circular resistance ring formed by the arc grooves 65 is opened, and the clasp ring 31 can be moved out to realize the opening of the door.
Claims
1. A novel automobile door lock rear buckle fixing structure, comprising a vehicle body door frame (1) and a vehicle door part body (2) arranged on one side of the vehicle body door frame (1), characterized in that, Also include the back buckle assembly (3), installation assembly (4), anti-loose assembly (5), buckle assembly (6) and switch assembly (7), wherein: The vehicle body door frame (1) is provided with a door groove (11), and the door groove (11) is welded with a fixing plate (41); The rear buckle assembly (3) comprises a buckle ring (31), the buckle ring (31) is welded on the buckle plate (32), the bottom surface of the buckle plate (32) is welded with a plurality of limiting columns (33), one end of the limiting column (33) is provided with a thread, and the limiting column (33) is provided with a butt joint groove (34) between the limiting column (33); The fixing plate (41) is provided with a butt protrusion (42), the butt protrusion (42) is embedded with the butt joint groove (34), the fixing plate (41) and the buckle plate (32) are provided with a latex buffer pad (43) between them, the anti-loose assembly (5) comprises a nylon rubber ring (51), the nylon rubber ring (51) is attached to one end of the inner wall of the mounting nut (44), the mounting nut (44) and the vehicle body door frame (1) are provided with an anti-loose pad (52) between them.
2. The novel fixing structure of the rear buckle of the automobile door lock according to claim 1, characterized in that: The mounting nut (44) and the limiting column (33) are embedded and screw fitted, and the limiting column (33) penetrates the vehicle body door frame (1) and the fixing plate (41).
3. The novel fixing structure of the rear buckle of the automobile door lock according to claim 2, characterized in that: The buckle assembly (6) comprises two rotating discs (61) symmetrically arranged above and below, the rotating disc (61) is embedded with a rotating shaft (62) at the center part and is rotationally fitted.
4. The novel fixing structure of the rear catch of the automobile door lock according to claim 3, characterized in that: The rotating disc (61) and the rotating shaft (62) are fixedly connected through a torsion spring (63), and the rotating shaft (62) is welded on the vehicle door part body (2).
5. The novel fixing structure of the rear catch of the automobile door lock according to claim 4, characterized in that: One side of the rotating disc (61) is provided with a plurality of gear teeth (64), one side of the gear tooth (64) is provided with an arc groove (65), and the arc grooves (65) are symmetrically arranged above and below.
6. The novel fixing structure of the rear catch of the automobile door lock according to claim 1, characterized in that: The switch assembly (7) comprises a locking plate (71), one side of the locking plate (71) is fixedly connected with a spring (72), the spring (72) is nested on the outer side of a sliding shaft (73), and the locking plate (71) is penetrated by the sliding shaft (73) and is slidingly fitted.
7. The novel fixing structure of the rear catch of the automobile door lock according to claim 6, characterized in that: The other end of the sliding shaft (73) is fixedly connected with a door handle (74), and the door handle (74) is embedded in the vehicle door part body (2) and is rotationally fitted.