A type of anti-offset car door hinge

By introducing an auxiliary block and a threaded connection between the locking bolt and a limiting block and a limiting groove in the automotive door hinge, the problem of door hinge shifting under impact or heavy pressure is solved, improving connection stability and safety.

CN224432285UActive Publication Date: 2026-06-30WUHU LUOFENG MACHINERY MANUFACTURING CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
WUHU LUOFENG MACHINERY MANUFACTURING CO LTD
Filing Date
2025-06-23
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Existing car door hinges are prone to shifting and deformation when subjected to impacts or heavy pressure, which affects safe use.

Method used

A structure including a frame base plate, stiffening plate, convex shaft, hinge shaft, concave cylinder, reinforcing plate, auxiliary block, docking block and locking bolt is designed. The auxiliary block fits and docks with the inner side of the frame, and the locking bolt is threaded to the docking groove to enhance the connection stability. The limit block and the limit groove provide additional limit function through rotational cooperation.

Benefits of technology

It improves the connection between the car door hinge and the frame, prevents misalignment, and enhances service life and safety.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model belongs to the field of automotive door hinge technology, specifically relating to an anti-displacement automotive door hinge, including a chassis base plate and a reinforcing plate connected to the surface of the chassis base plate. A convex shaft is connected to the top of the reinforcing plate, and a hinge shaft is provided on one side of the convex shaft. A concave cylinder is connected to one end of the hinge shaft near the convex shaft, and a reinforcing plate is connected to one side of the hinge shaft. The other end of the reinforcing plate is connected to the door base plate. An auxiliary block is connected to the bottom surface of the chassis base plate. This utility model achieves a more secure connection between the automotive door hinge and the chassis by fitting the auxiliary block from the inside of the chassis, making the mating block on the surface of the auxiliary block align with the chassis base plate. This enhances the tight force between the automotive door hinge and the chassis, ensuring that the automotive door hinge will not shift when subjected to impact or heavy pressure, thus extending the service life of the automotive door hinge.
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Description

Technical Field

[0001] This utility model belongs to the field of automotive door hinge technology, specifically relating to an automotive door hinge that can prevent offset. Background Technology

[0002] As a crucial component of the car body, automotive door hinges play a vital role in connecting the door to the body and ensuring the door's proper opening and closing. Automotive door hinges can be categorized into various types based on their manufacturing process, function, and structure: By manufacturing process: stamping type, profile type, casting type, stamping profile combination type, etc. By function: simple hinges and limiter hinges. Limiter hinges can be further subdivided into cantilever toothed self-limiting type, closed self-limiting type, torsion spring self-limiting type, intermediate toothed self-limiting type, etc. By structure: integral type, detachable type, four-bar type, etc.

[0003] If you find that your car door hinges are not opening or closing smoothly or have other problems during use, you may need to adjust them. Adjustment methods typically include adjusting the hinge's fixing screws and changing the position of the hinge arm. Most car door hinges on the market use bolts that pass through the body and connect to the car frame or door. However, this installation method alone makes the door hinge prone to shifting when subjected to impacts or heavy pressure, leading to deformation and affecting subsequent safe use. Utility Model Content

[0004] The purpose of this utility model is to provide an anti-displacement car door hinge, which aims to solve the problem that in the existing car door hinges on the market, the car door hinges are all connected to the frame or door by bolts passing through the body. However, this installation method alone makes the car door hinge displace when it is hit or subjected to heavy pressure, which leads to a certain degree of deformation of the car door hinge and affects the subsequent safe use.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an anti-deviation car door hinge, comprising a frame base plate and a reinforcing plate connected to the surface of the frame base plate, wherein a convex shaft is connected to the top of the reinforcing plate, a hinge shaft is provided on one side of the convex shaft, a concave cylinder is connected to one end of the hinge shaft near the convex shaft, a reinforcing plate is connected to one side of the hinge shaft, and a door base plate is connected to the other end of the reinforcing plate;

[0006] An auxiliary block is connected to the bottom surface of the chassis base plate. A mating block is connected to the surface of the auxiliary block near the chassis base plate. A locking bolt is connected through the surface of the mating block. A mating groove is formed on the surface of the chassis base plate near the mating block.

[0007] As a preferred embodiment of the anti-deviation automotive door hinge of this utility model, the bottom surface of the auxiliary block is provided with an extension plate, and the inner side of the auxiliary block is in contact with the inner wall of the vehicle frame.

[0008] As a preferred embodiment of the anti-displacement automotive door hinge of this utility model, the locking bolt is threadedly connected to the mating block, and the diameter of the locking bolt is larger than the longitudinal dimension of the mating groove.

[0009] As a preferred embodiment of the anti-deviation automotive door hinge of this utility model, the surface size of the docking block is adapted to the inner wall size of the docking groove, and the auxiliary block docks with the docking groove on the surface of the vehicle frame floor plate through the docking block.

[0010] As a preferred embodiment of the anti-deviation automotive door hinge of this utility model, the surface of the convex shaft is connected to a limiting block, and the inner wall of the concave cylinder is provided with a limiting groove, wherein the limiting block and the limiting groove form a rotational fit structure.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This invention connects the auxiliary block to the frame from the inside, making the connecting block on the surface of the auxiliary block connect with the frame base plate. This makes the connection between the car door hinge and the frame more secure, increases the tight force between the car door hinge and the frame, and ensures that the car door hinge will not shift when subjected to impact or heavy pressure, thus extending the service life of the car door hinge. Attached Figure Description

[0013] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0014] Figure 1 This is a schematic diagram of the overall structure of the automobile door hinge of this utility model;

[0015] Figure 2 This is a bottom view schematic diagram of the automotive door hinge structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the exploded structure of the auxiliary block of this utility model;

[0017] Figure 4 This is a schematic diagram of the cross-sectional structure of the concave cylinder of this utility model.

[0018] In the diagram: 1. Frame base plate; 2. Reinforcing plate; 3. Convex shaft; 4. Hinge shaft; 5. Concave cylinder; 6. Reinforcing plate; 7. Door base plate; 8. Auxiliary block; 9. Connecting block; 10. Locking bolt; 11. Connecting groove; 12. Limiting block; 13. Limiting groove. Detailed Implementation

[0019] 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.

[0020] Please see Figure 1-4 The present invention provides the following technical solution: a car door hinge that can prevent displacement, including a frame base plate 1 and a reinforcing plate 2 connected to the surface of the frame base plate 1. A convex shaft 3 is connected to the top of the reinforcing plate 2, a hinge shaft 4 is provided on one side of the convex shaft 3, a concave cylinder 5 is connected to one end of the hinge shaft 4 near the convex shaft 3, a reinforcing plate 6 is connected to one side of the hinge shaft 4, and a car door base plate 7 is connected to the other end of the reinforcing plate 6.

[0021] An auxiliary block 8 is connected to the bottom surface of the frame base plate 1. A mating block 9 is connected to the surface of the auxiliary block 8 near the frame base plate 1. A locking bolt 10 is connected through the surface of the mating block 9. A mating groove 11 is opened on the surface of the frame base plate 1 near the mating block 9.

[0022] Preferably, the bottom surface of the auxiliary block 8 is provided with an extension plate, and the inner side of the auxiliary block 8 is in contact with the inner wall of the frame.

[0023] In practical use, the auxiliary block 8 ensures stable installation of the car door hinges and prevents them from shifting.

[0024] Preferably, the locking bolt 10 is threadedly connected to the mating block 9, and the diameter of the locking bolt 10 is larger than the longitudinal dimension of the mating groove 11.

[0025] In practical use, the use of locking bolts 10 avoids the need to install and fix the auxiliary block 8.

[0026] Preferably, the surface dimensions of the docking block 9 are adapted to the inner wall dimensions of the docking groove 11, and the auxiliary block 8 docks with the docking groove 11 on the surface of the chassis base plate 1 through the docking block 9.

[0027] In practical use, the auxiliary block 8 can be easily connected by connecting the docking block 9 with the docking slot 11.

[0028] Preferably, the surface of the convex shaft 3 is connected to the limiting block 12, and the inner wall of the concave cylinder 5 is provided with a limiting groove 13, and the limiting block 12 and the limiting groove 13 form a rotating fit structure.

[0029] In practical use, by rotating the limiting block 12 and the limiting groove 13, the car door hinge can have a certain limiting function, thereby improving safety.

[0030] The working principle of this utility model is as follows: First, the auxiliary block 8 is fitted and connected from the inside of the frame, so that the connecting block 9 on the surface of the auxiliary block 8 is connected with the frame base plate 1. Then, the locking bolt 10 is passed through the connecting groove 11 and screwed into the connecting block 9. After that, the original bolts on the surface of the frame base plate 1 are fixed, thereby making the connection between the car door hinge and the frame more secure and increasing the tight force between the car door hinge and the frame. This ensures that the car door hinge will not shift when subjected to impact or heavy pressure, thus improving the service life of the car door hinge. In addition, when the concave cylinder 5 on one side of the hinge shaft 4 rotates along the convex shaft 3, it drives the limiting block 12 on the surface of the convex shaft 3 to rotate along the limiting groove 13 on the inner wall of the concave cylinder 5, thereby giving the car door hinge a certain limiting function and further improving the safety of the car door hinge.

[0031] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A car door hinge with anti-offset capability, comprising a frame base plate (1) and a reinforcing plate (2) connected to the surface of the frame base plate (1), characterized in that: The top of the stiffening plate (2) is connected to a convex shaft (3), a hinge shaft (4) is provided on one side of the convex shaft (3), a concave cylinder (5) is connected to one end of the hinge shaft (4) near the convex shaft (3), a reinforcing plate (6) is connected to one side of the hinge shaft (4), and a door bottom plate (7) is connected to the other end of the reinforcing plate (6). An auxiliary block (8) is connected to the bottom surface of the frame base plate (1). A mating block (9) is connected to the surface of the auxiliary block (8) near the frame base plate (1). A locking bolt (10) is connected through the surface of the mating block (9). A mating groove (11) is opened on the surface of the frame base plate (1) near the mating block (9).

2. The anti-deviation automotive door hinge according to claim 1, characterized in that: The bottom surface of the auxiliary block (8) is provided with an extension plate, and the inner side of the auxiliary block (8) is in contact with the inner wall of the frame.

3. The anti-displacement automotive door hinge according to claim 1, characterized in that: The locking bolt (10) is threadedly connected to the mating block (9), and the diameter of the locking bolt (10) is greater than the longitudinal dimension of the mating groove (11).

4. The anti-offset automotive door hinge according to claim 1, characterized in that: The surface dimensions of the docking block (9) are adapted to the inner wall dimensions of the docking groove (11), and the auxiliary block (8) docks with the docking groove (11) on the surface of the chassis base plate (1) through the docking block (9).

5. The anti-deviation automotive door hinge according to claim 1, characterized in that: The surface of the convex shaft (3) is connected to a limiting block (12), and the inner wall of the concave cylinder (5) is provided with a limiting groove (13). The limiting block (12) and the limiting groove (13) form a rotating fit structure.