Automobile door hinge support device

By using a main support frame and reinforcing ribs made of cast aluminum alloy, combined with multi-bolt connections and soft rubber air hoses, the problems of fatigue fracture and complex installation of traditional car door hinge brackets are solved, achieving high strength and simplified installation.

CN224093196UActive Publication Date: 2026-04-07JIANGSU DINGTU MASCH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-18
Publication Date
2026-04-07

AI Technical Summary

Technical Problem

Traditional car door hinge brackets are prone to fatigue fracture due to stress concentration. Their connection structure is complex and inconvenient to maintain, affecting the smoothness of door opening and closing and their service life.

Method used

The main support frame and reinforcing rib assembly are made of one-piece cast aluminum alloy, combined with multi-bolt connections and soft rubber air hoses, to achieve lightweight and high strength, simplify the installation process and improve fatigue resistance.

Benefits of technology

It improves the fatigue resistance and installation accuracy of the door hinges, reduces maintenance costs, and ensures smooth opening and closing of the doors and their service life.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224093196U_ABST
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Abstract

The utility model relates to the technical field of automobile door supports, in particular to an automobile door hinge support device which comprises a body support, a first butt-joint plate, a second butt-joint plate, a welding assembly and a reinforcing rib assembly, the first butt-joint plate is fixedly welded to the top of the body support, the welding assembly comprises a welding plate, the welding plate is arranged in a triangular shape, and the reinforcing rib assembly is arranged on the body support. The top of the welding plate is fixedly connected with a second butt joint plate through an aluminum plate, and the reinforcing rib assembly comprises a set of supporting plates. According to the automobile door hinge, the main body support, the reinforcing rib assembly and the welding assembly are arranged to form an integrated structure, the aluminum alloy casting structure is adopted, the requirement for the support of the automobile door hinge with light weight and high strength is met, the anti-fatigue performance of an automobile door is improved in cooperation with multi-bolt connection, the installation process is simplified, and meanwhile the maintenance cost is reduced.
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Description

Technical Field

[0001] This utility model relates to the field of car door bracket technology, specifically to a car door hinge bracket device. Background Technology

[0002] Car doors provide access for drivers and passengers, isolate them from external interference, and mitigate side impacts to some extent, protecting occupants. The aesthetics of a car are also related to the design of its doors. The quality of a car door is primarily reflected in its impact resistance, sealing performance, and ease of opening and closing, as well as other functional indicators. Impact resistance is particularly important because in a side collision, the buffer distance is very short, easily injuring occupants.

[0003] During the production of car doors, the door needs to be connected to the vehicle body. Traditional automotive door hinge brackets are mostly made of single-layer steel sheet by stamping, which is prone to fatigue fracture due to stress concentration after long-term use. At the same time, the connection structure between the hinge and the vehicle body and door is complex, requiring high installation precision and making maintenance inconvenient. In existing technologies, the buffering performance and deformation resistance of the hinge brackets are insufficient, affecting the smoothness of door opening and closing and its service life.

[0004] In view of this, we propose a car door hinge bracket device. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides an automotive door hinge bracket device.

[0006] The technical solution of this utility model is:

[0007] A car door hinge bracket device includes a main bracket, a first mating plate, a second mating plate, a welding assembly, and a reinforcing rib assembly. The first mating plate is fixedly welded to the top of the main bracket. The welding assembly includes a welding plate, which is triangularly arranged. The top of the welding plate is fixedly connected to the second mating plate via an aluminum plate. The reinforcing rib assembly includes a set of support plates. The main bracket and the first mating plate are made of integral cast aluminum alloy. The main bracket includes a set of cast blocks and a first connecting part connected to the right side of the cast blocks. The surface of the first connecting part has an adjustment opening.

[0008] As a preferred technical solution, the welding plate is fixedly connected to the surface of the support plate by a fixing bolt, a connecting rod is fixedly connected to the bottom front side of the support plate, a limiting plate is provided at the front end of the connecting rod, a screw hole is opened inside the connecting rod, and an adjusting shaft is rotatably connected inside the screw hole.

[0009] As a preferred technical solution, the adjusting shaft is threadedly connected to the inside of the adjusting opening, and the casting block forms an integral structure with the reinforcing rib assembly through the connection between the adjusting opening and the adjusting shaft.

[0010] As a preferred technical solution, a circular hole is provided on the rear side of the inner side of the adjustment opening, and a set of adjustment nuts are threaded into the inner side of the circular hole.

[0011] As a preferred technical solution, the left side of the casting block is provided with an integral vehicle body connecting plate. The outer front and rear surfaces of the vehicle body connecting plate are provided with a first door connecting bolt and a second door connecting bolt. The first door connecting bolt and the second door connecting bolt are threadedly connected to the inside of the vehicle body connecting plate through holes opened in the vehicle body connecting plate.

[0012] As a preferred technical solution, the first docking plate and the second docking plate are fixedly connected with two sets of soft rubber air tubes.

[0013] As a preferred technical solution, the adjusting nut includes a self-lubricating coating to reduce metal-to-metal friction.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This utility model features an integrated structure consisting of a main support frame, reinforcing ribs, and welding components. Through its aluminum alloy casting structure, it achieves the requirements for lightweight and high-strength door hinge support. Combined with multi-bolt connections, it improves the fatigue resistance of the door, simplifying the installation process and reducing maintenance costs.

[0016] This utility model, through the setting of a soft rubber air tube between the first and second docking plates at the top, ensures that the slight differences in the docking of different car doors are not compromised during installation. This makes the door frame more secure after installation and can adapt to different degrees of door opening during actual use, further reducing door fatigue. Attached Figure Description

[0017] Figure 1 This is one of the structural schematic diagrams of the present utility model (overall connecting part);

[0018] Figure 2 This is a structural schematic diagram of the present invention (the connection part between the main support and the reinforcing rib assembly).

[0019] Figure 3 This is a schematic diagram of the reinforcing rib assembly structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the main support structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the docking plate assembly structure of this utility model.

[0022] In the diagram: 1. Main support frame; 10. Casting block; 11. First connecting part; 12. Adjustment opening; 13. Adjusting nut; 14. Vehicle body connecting plate; 15. First door connecting bolt; 16. Second door connecting bolt; 2. Reinforcing rib assembly; 20. Support plate; 201. Fixing bolt; 21. Connecting rod; 22. Limiting plate; 220. Adjusting shaft; 3. Welding assembly; 30. Welding plate; 4. First connecting plate; 5. Second connecting plate; 6. Soft rubber air hose. 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] Please see Figures 1 to 5 A car door hinge bracket device includes a main bracket 1, a first docking plate 4, a second docking plate 5, a welding assembly 3, and a reinforcing rib assembly 2. The main bracket 1 has a first docking plate 4 fixedly welded to its top. The welding assembly 3 includes a welding plate 30 arranged in a triangular shape. The top of the welding plate 30 is fixedly connected to the second docking plate 5 via an aluminum plate. The reinforcing rib assembly 2 includes a set of support plates 20. The main bracket 1 and the first docking plate 4 are made of integrally cast aluminum alloy. The main bracket 1 includes a set of cast blocks 10 and a first connecting part 11 connected to the right side of the cast blocks 10. The surface of the first connecting part 11 has an adjustment opening 12.

[0025] It should be added that the surface of the main support 1 is anodized and has a thickness of 3-5mm. The main support is made of 6061-T6 aluminum alloy. In terms of specific structure, the welding plate 30 needs to be installed at the joint between the vehicle body and the door by welding, and the support plate 20 is placed in front of the welding plate 30.

[0026] In a preferred embodiment, the welding plate 30 is fixedly connected to the surface of the support plate 20 by a fixing bolt 201. A connecting rod 21 is fixedly connected to the bottom front side of the support plate 20. A limiting plate 22 is provided at the front end of the connecting rod 21. A screw hole is opened inside the connecting rod 21, and an adjusting shaft 220 is rotatably connected inside the screw hole.

[0027] In a preferred embodiment, the adjusting shaft 220 is threadedly connected to the inside of the adjusting opening 12, and the casting block 10 forms an integral structure with the reinforcing rib assembly 2 through the connection between the adjusting opening 12 and the adjusting shaft 220.

[0028] It is worth noting that after the welding plate 30 and the support plate 20 are fully connected, the adjusting shaft 220 is inserted into the adjusting opening 12 and rotated to make the casting block 10, the support plate 20, and the welding plate 30 integrally connected. At this time, the connection is completed, and the operator rotates the adjusting shaft 220 to ensure that it can be used normally.

[0029] As a preferred embodiment, a circular hole is provided on the rear side of the inner side of the adjustment opening 12, and a set of adjustment nuts 13 are threadedly connected inside the circular hole.

[0030] In practical use, after the adjustment shaft 220 is inserted into the adjustment opening 12 and installed, the operator needs to adjust the torsional resistance of the adjustment shaft 220 by adjusting the adjusting nut 13. The adjustment process is achieved by turning the adjusting nut 13 to make it press against the surface of the adjustment shaft 220.

[0031] As a preferred embodiment, the left side of the casting block 10 is provided with an integral vehicle body connecting plate 14. The front and rear outer surfaces of the vehicle body connecting plate 14 are provided with a first door connecting bolt 15 and a second door connecting bolt 16. The first door connecting bolt 15 and the second door connecting bolt 16 are threadedly connected to the inside of the vehicle body connecting plate 14 through the holes opened in the vehicle body connecting plate 14.

[0032] As a preferred embodiment, the first docking plate 4 and the second docking plate 5 are fixedly connected with two sets of soft rubber air pipes 6.

[0033] As a preferred embodiment, the adjusting nut 13 includes a self-lubricating coating to reduce metal-to-metal friction.

[0034] It is worth noting that, in the overall installation, the first door connecting bolt 15 and the second door connecting bolt 16 are connected to the opening on the door surface. After the first connecting plate 4 and the second connecting plate 5 are installed, they are welded to their respective positions by welding. At this time, the soft rubber air tube 6 is assembled.

[0035] When using this utility model, the bracket first requires connecting its various components. First, the welding plate 30 is installed to the junction of the vehicle body and the door using welding. The support plate 20 is then placed in front of the welding plate 30. After the welding plate 30 and support plate 20 are fully connected, the adjusting shaft 220 is inserted into the adjusting opening 12 and rotated to integrally connect the casting block 10, support plate 20, and welding plate 30. At this point, the connection is complete. The operator rotates the adjusting shaft 220 to ensure normal operation. After the adjusting shaft 220 is inserted into the adjusting opening 12 and installed, the personnel need to adjust the torsional resistance of the adjusting shaft 220 by adjusting the adjusting nut 13. The adjustment process is achieved by turning the adjusting nut 13 to make it press against the surface of the adjusting shaft 220. Then, the first door connecting bolt 15 and the second door connecting bolt 16 are connected to the opening on the door surface. After the first connecting plate 4 and the second connecting plate 5 are installed, they are welded to their respective positions by welding. At this time, the soft rubber air pipe 6 is assembled, and the installation of the door and the vehicle body is completed.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A car door hinge bracket device, comprising a main bracket (1), a first mating plate (4), a second mating plate (5), a welding assembly (3), and a reinforcing rib assembly (2), characterized in that: The top of the main support (1) is fixedly welded with a first docking plate (4), the welding assembly (3) includes a welding plate (30), the welding plate (30) is triangularly arranged, the top of the welding plate (30) is fixedly connected with a second docking plate (5) by an aluminum plate, the reinforcing rib assembly (2) includes a set of support plates (20); the main support (1) and the first docking plate (4) are made of integral cast aluminum alloy, the main support (1) includes a set of casting blocks (10) and a first connecting part (11) connected to the right side of the casting blocks (10), and the surface of the first connecting part (11) is provided with an adjustment opening (12).

2. The automobile door hinge bracket device as described in claim 1, characterized in that: The welding plate (30) is fixedly connected to the surface of the support plate (20) by a fixing bolt (201). A connecting rod (21) is fixedly connected to the bottom front side of the support plate (20). A limiting plate (22) is provided at the front end of the connecting rod (21). A screw hole is opened inside the connecting rod (21), and an adjusting shaft (220) is rotatably connected inside the screw hole.

3. The automobile door hinge bracket device as described in claim 2, characterized in that: The adjusting shaft (220) is threaded into the interior of the adjusting opening (12), and the casting block (10) is integrated with the reinforcing rib assembly (2) through the connection between the adjusting opening (12) and the adjusting shaft (220).

4. The automobile door hinge bracket device as described in claim 1, characterized in that: The inner rear side of the adjustment opening (12) is provided with a round hole, and a set of adjustment nuts (13) are threaded into the inside of the round hole.

5. The automobile door hinge bracket device as described in claim 1, characterized in that: The casting block (10) has an integral vehicle body connecting plate (14) on its left side. The front and rear surfaces of the vehicle body connecting plate (14) are provided with a first door connecting bolt (15) and a second door connecting bolt (16). The first door connecting bolt (15) and the second door connecting bolt (16) are threadedly connected to the inside of the vehicle body connecting plate (14) through the holes opened in the vehicle body connecting plate (14).

6. The automobile door hinge bracket device as described in claim 1, characterized in that: The first docking plate (4) and the second docking plate (5) are fixedly connected with two sets of soft rubber air tubes (6).

7. The automobile door hinge bracket device as described in claim 4, characterized in that: The adjusting nut (13) contains a self-lubricating coating to reduce metal-to-metal friction.