Hinge structure for automobile
By introducing a combination of damping sleeves and fasteners into the automotive hinge structure, the problem of unstable connection caused by excessively fast tailgate rotation speed was solved, achieving a stable connection and adaptability between the tailgate and the vehicle body.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-31
- Publication Date
- 2026-03-31
AI Technical Summary
When a car tailgate is opened, excessive power from the pneumatic hydraulic cylinder causes the tailgate to rotate too quickly, affecting the stability of the connection between the tailgate and the car body.
It adopts a combination structure of damping sleeve and fixing component. The friction is increased by multiple stripes of the damping sleeve, and the friction is adjusted by turning the rod and compressing the spring to achieve relative rotation between the rotating part and the fixed part, which can adapt to different environments.
It improves the stability of opening and closing the tailgate, ensures the stability of the connection between the tailgate and the vehicle body, and adapts to environmental changes in different situations.
Smart Images

Figure CN224064161U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of automotive parts technology, and in particular to a hinge structure for automobiles. Background Technology
[0002] When a car's interior doors, hood, and tailgate are installed, they are typically connected to the vehicle body via hinges, allowing them to rotate. During the opening process, one end of the tailgate rises from below, while the other end, connected to the body via a hinge, rotates. However, when the tailgate opens, it rotates under the influence of a pneumatic hydraulic cylinder. Excessive power from the cylinder can cause the tailgate to rotate too quickly, loosening the connection between the tailgate and the body, thus reducing stability between them. Utility Model Content
[0003] The purpose of this utility model is to provide a hinge structure for automobiles, addressing the shortcomings and deficiencies of existing technologies.
[0004] To achieve the above objectives, the present invention adopts the following technical solution:
[0005] It includes a fixed seat and a rotating seat. A connecting rod is fixedly connected to one side wall of the fixed seat. One end of the rotating seat rotates around the circumference of the connecting rod. A damping sleeve is fixedly fitted around the circumference of the connecting rod. One end of the rotating seat is fitted around the outer circumference of the damping sleeve. The outer circumference of the damping sleeve has multiple stripes evenly distributed around its periphery.
[0006] Preferably, the side wall of the fixed seat is provided with a locking spring, and a plurality of locking grooves are evenly opened circumferentially on the side wall of one end of the rotating seat, and the inner side of the outer end of the locking spring is engaged and fixed in the locking groove.
[0007] Preferably, the width of the inner side of the outer end of the locking spring gradually decreases from the outside to the inside.
[0008] Preferably, the rotating seat includes a mounting part and a rotating part, one end of the rotating part is rotatably connected to one end of the mounting part, and a fixing member is provided between the other end of the rotating part and the mounting part, the fixing member fixing the rotating part and the mounting part.
[0009] Preferably, the fixing member includes a tightening rod and a fixing nut. One end of the tightening rod passes through the side wall of one end of the rotating part and the side wall of the mounting part. The fixing nut is threadedly rotatably connected to one end of the tightening rod and abuts against the side wall of the mounting part.
[0010] Preferably, the outer end of the screwing rod has a manual screwing block.
[0011] Preferably, a compression spring is sleeved on the circumferential side of the screwing rod, and the compression spring is located between the rotating part and the mounting part.
[0012] In summary, the present application includes at least one of the following beneficial technical effects:
[0013] 1. During the process of opening the tailgate, the rotating part rotates as the tailgate rotates, causing relative rotation between the rotating part and the fixed part. Under the action of the damping sleeve, the rotation efficiency between the fixed part and the rotating part is reduced, and multiple stripes are provided on the outer circumferential side of the damping sleeve to increase the friction between the damping sleeve and the rotating part, so as not to affect the connection between the tailgate and the vehicle body, and improve the stability of opening or closing the tailgate;
[0014] 2. Driving the screwing rod to rotate can change the distance between the rotating part and the mounting part, causing the friction between the damping sleeve and the rotating part to change. Under the resilience of the compression spring, the rotating part and the mounting part move away from each other, and under the limitation of the screwing rod and the fixing nut, maintain the corresponding positional relationship, so that the hinge structure can adapt to different environmental conditions. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 is a schematic structural view of the hinge of the present utility model;
[0016] Figure 2 is an exploded view of the hinge of the present utility model;
[0017] Figure 3 is an exploded view of the hinge from another perspective of the present utility model.
[0018] In the figure: 1, fixed seat; 2, rotating seat; 3, connecting rod; 4, damping sleeve; 5, stripe; 6, locking elastic piece; 7, connecting piece; 8, locking block; 9, locking groove; 10, guiding surface; 11, mounting part; 12, rotating part; 13, fixing piece; 14, screwing rod; 15, fixing nut; 16, manual screwing block; 17, compression spring. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0019] The following further describes the present utility model with reference to the accompanying drawings.
[0020] The embodiment of the present application discloses a hinge structure for an automobile.
[0021] Referring to Figure 1 , it includes a fixed seat 1 and a rotating seat 2. The vertical cross-section of the fixed seat 1 is in a "U" shape. First through holes are respectively formed on both side walls at one end of the fixed seat 1, and a connecting rod 3 is fixedly connected and penetrated in the first through holes. A damping sleeve 4 is fixedly sleeved on the circumferential side of the connecting rod 3, and one end of the rotating seat 2 is rotatably connected to the outer circumferential side of the damping sleeve 4.
[0022] Referring to Figure 2 and Figure 3 Multiple stripes 5 are uniformly and integrally formed on the outer periphery of the damping sleeve 4. These stripes 5 increase the friction between the rotating seat 2 and the damping sleeve 4, thereby reducing the rotational speed of the rotating seat 2 and the fixed seat 1. The rotating part 12 rotates with the tailgate, causing relative rotation between the rotating part 12 and the fixed part. Under the action of the damping sleeve 4, the rotational efficiency between the fixed part and the rotating part 12 is reduced. Furthermore, the multiple stripes 5 on the outer periphery of the damping sleeve 4 increase the friction between the damping sleeve 4 and the rotating part 12, thus not affecting the connection between the tailgate and the vehicle body.
[0023] A groove is provided on one side wall of the outer end of the fixed base 1. A locking spring 6 is integrally embedded and fixed in the groove. The locking spring 6 includes a connecting piece 7 and a locking block 8. One end of the connecting piece 7 is integrally set at the bottom of the groove. The locking block 8 is integrally set on the inner side wall of the outer end of the connecting piece 7. Multiple locking grooves 9 are evenly provided on the side wall of the rotating base 2. The locking block 8 is snapped and fixed in the locking groove 9. Guide surfaces 10 are provided on the corresponding two sides of the locking block 8 so that the width of the locking block 8 gradually decreases from the outside to the inside.
[0024] The rotating seat 2 includes a mounting part 11 and a rotating part 12. The rotating part 12 is arc-shaped. One end of the rotating part 12 is rotatably connected to one end of the mounting part 11. Two fixing members 13 are evenly placed between the other end of the rotating part 12 and the mounting part 11. The fixing member 13 includes a tightening rod 14 and a fixing nut 15. One end of the tightening rod 14 is integrally provided with a manual tightening block 16. The fixing nut 15 is embedded and fixed in the inner side wall of the mounting part 11. One end of the tightening rod 14 passes through the side wall of the rotating part 12 and the mounting part 11 in sequence, and then is threadedly rotatably connected to the fixing nut 15.
[0025] A compression spring 17 is sleeved around the circumference of the turning rod 14. One end of the compression spring 17 abuts against the inner wall of the rotating part 12, and the other end abuts against the outer wall of the mounting part 11. Driving the turning rod 14 to rotate changes the distance between the rotating part 12 and the mounting part 11, thereby changing the friction between the damping sleeve 4 and the rotating part 12. Under the rebound of the compression spring 17, the rotating part 12 and the mounting part 11 are moved away from each other, and under the constraint of the turning rod 14 and the fixing nut 15, the corresponding positional relationship is maintained, so that the hinge structure can adapt to different environments.
[0026] The above description is only a preferred embodiment of the present utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model patent application are included in the scope of the present utility model patent application.
Claims
1. A hinge structure for a vehicle, comprising a fixed seat (1) and a rotating seat (2), one end of the fixed seat (1) being provided with a connecting rod (3) penetrating through the side wall, and one end of the rotating seat (2) being rotatable around the circumferential side of the connecting rod (3), characterized in that: The connecting rod (3) is sleeved and fixed with a damping sleeve (4) on the peripheral side, one end of the rotating seat (2) is sleeved on the outer peripheral side of the damping sleeve (4), and the outer peripheral side of the damping sleeve (4) is uniformly provided with a plurality of stripes (5) in the circumferential direction.
2. The hinge structure for a vehicle according to claim 1, characterized by The side wall of the fixed seat (1) is provided with a locking spring (6), the side wall of one end of the rotating seat (2) is uniformly provided with a plurality of locking grooves (9) in the circumferential direction, and the inner side of the outer end of the locking spring (6) is clamped and fixed in the locking groove (9).
3. The hinge structure for a vehicle according to claim 2, wherein The inner side of the outer end of the locking spring (6) gradually decreases in width from outside to inside.
4. The hinge structure for a vehicle according to claim 1, characterized by The rotating seat (2) comprises a mounting portion (11) and a rotating portion (12), one end of the rotating portion (12) is rotatably connected to one end of the mounting portion (11), a fixing member (13) is arranged between the other end of the rotating portion (12) and the mounting portion (11), and the fixing member (13) fixes the rotating portion (12) and the mounting portion (11).
5. The hinge structure for a vehicle according to claim 4, wherein The fixing member (13) comprises a twisting rod (14) and a fixing nut (15), one end of the twisting rod (14) penetrates the side wall of one end of the rotating portion (12) and the side wall of the mounting portion (11), and the fixing nut (15) is threadedly rotatably connected to one end of the twisting rod (14) and abuts against the side wall of the mounting portion (11).
6. The hinge structure for a vehicle according to claim 5, wherein The outer end of the twisting rod (14) is provided with a manual twisting block (16).
7. The hinge structure for a vehicle according to claim 5, characterized by The peripheral side of the twisting rod (14) is sleeved with a compression spring (17), and the compression spring (17) is located between the rotating portion (12) and the mounting portion (11).