Hing assemblies for left and right tailgates of automobiles

Abstract

This utility model discloses a hinge assembly for the left and right rear doors of an automobile, including a first door hinge support and a second door hinge support. The joint between the first and second door hinge supports is hinged by a positioning rivet. The outer end surface of the first door hinge support is provided with a lubricating oil storage protrusion. The inner surface of the lubricating oil storage protrusion is provided with a lubricating oil guide channel. The lubricating oil guide channel penetrates the inner surface of the insertion hole of the positioning rivet. The outer surface of the lubricating oil storage protrusion is threadedly connected to a threaded mounting cover. The surface of the threaded mounting cover is provided with a feed hole. A convex plug is slidably engaged at the feed hole of the threaded mounting cover. By adopting the lubricating oil storage protrusion structure at the first door hinge support, lubricating oil can be stored. The lubricating oil enters the positioning rivet through the lubricating oil guide channel for rotational lubrication, which is convenient for lubrication, easy for adding lubricating oil for maintenance, and convenient for use.

Description

Technical Field

[0001] This utility model relates to the field of hinge assemblies for left and right tailgates of automobiles, and more specifically, to hinge assemblies for left and right tailgates of automobiles. Background Technology

[0002] Automotive hinges, also known as door hinges or door hinges, are mechanical devices used to connect two solid objects and allow them to rotate relative to each other. In automobiles, hinges are mainly used to connect doors, hoods, trunk lids, and fuel tank caps, ensuring they can open and close smoothly. Automotive hinges play a crucial role, ensuring easy entry and exit for drivers and passengers. Door hinges connect the door to the body, and in addition to enabling normal opening and closing, they also provide a buffering effect, reducing noise when closing the door. The installation of door hinges requires extremely strict standards. The mounting surfaces of the body and door must be flat to ensure precise installation. If bolts are used for fixing, the dimensions of the mounting holes must be precise and stable. During installation, all components must fit tightly without looseness or wobbling. Furthermore, the durability of the door hinges is also critical. Throughout the vehicle's lifespan, the hinges must maintain good performance, ensuring they continue to function normally after repeated opening and closing. Therefore, high-quality automotive hinges play a vital role in improving the vehicle's user experience and ensuring passenger safety.

[0003] The existing automotive hinges have a one-piece molded joint, which makes lubrication inconvenient over time. This leads to wear and noise issues, and lubrication can only be applied externally during maintenance, which is inconvenient and hinders subsequent servicing. Utility Model Content

[0004] To address the problems existing in the prior art, the purpose of this utility model is to provide a hinge assembly for the left and right tailgates of automobiles. By adopting a lubricating oil storage protrusion structure at the first door hinge support, lubricating oil can be stored. The lubricating oil enters the positioning rivet through the lubricating oil guide channel for rotational lubrication, which facilitates lubrication, lubrication oil addition and maintenance, and is convenient to use.

[0005] To solve the above problems, the present invention adopts the following technical solution.

[0006] A hinge assembly for the left and right tailgates of an automobile includes a first door hinge support and a second door hinge support. The joint between the first and second door hinge supports is hinged by a locating rivet. The outer surface of the first door hinge support has a lubricating oil storage protrusion, and the inner surface of the lubricating oil storage protrusion has a lubricating oil guide channel. The lubricating oil guide channel penetrates the inner surface of the insertion hole of the locating rivet. A threaded mounting cap is threadedly connected to the outer surface of the lubricating oil storage protrusion. The surface of the cover has a feed hole, and a convex plug is slidably engaged with the feed hole of the threaded cover. A T-shaped locating pin is fixedly connected to the inner surface of the threaded cover. The outer surface of the convex plug is slidably sleeved on the outer surface of the T-shaped locating pin. A spring is sleeved on the outer surface of the T-shaped locating pin. By setting a lubricating oil storage protrusion structure at the first door hinge support, lubricating oil can be stored. The lubricating oil enters the locating pin through the lubricating oil guide channel for rotational lubrication, which is convenient for lubrication, easy for adding lubricating oil for maintenance, and convenient for use.

[0007] Furthermore, one end of the spring is pressed against the inner surface of the T-shaped locating pin, and the other end is pressed against the outer surface of the convex plug.

[0008] Furthermore, the T-shaped locating pin is fixedly connected to the left and right sides of the inner end of the threaded mounting cover.

[0009] Furthermore, the convex plug has through holes on its left and right sides. The through holes are circular holes, and the outer surface of the T-shaped positioning pin slides through the inner surface of the through hole.

[0010] Furthermore, the convex plug adopts a convex circular block structure, and its outer end surface is set as a spherical bulging surface structure.

[0011] Furthermore, the threaded mounting cover adopts a hexagonal concave cover structure, and its outer surface is set as a hexagonal boss structure.

[0012] Furthermore, mounting holes are provided on the surfaces of the first door hinge support and the second door hinge support.

[0013] Compared with existing technologies, the advantages of this utility model are:

[0014] (1) By adopting a lubricating oil storage protrusion structure at the first door hinge support seat, lubricating oil can be stored. It enters the positioning rivet through the lubricating oil guide channel for rotational lubrication, which is convenient for lubrication, easy to add lubricating oil for maintenance, and convenient to use. Attached Figure Description

[0015] Figure 1 This is a first schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a second schematic diagram of the overall structure of this utility model;

[0017] Figure 3 This is a first cross-sectional view of the overall structure of this utility model;

[0018] Figure 4 This is a second cross-sectional view of the overall structure of this utility model;

[0019] Figure 5 This is an enlarged schematic diagram of point A in this utility model;

[0020] Figure 6 This is a partial structural diagram of the threaded mounting cover of this utility model;

[0021] Figure 7 This is a partial structural diagram of the convex plug of this utility model.

[0022] Explanation of the labels in the diagram:

[0023] 1 First door hinge support, 2 Second door hinge support, 3 Positioning rivet, 4 Lubricating oil storage protrusion, 5 Lubricating oil guide channel, 6 Threaded mounting cover, 7 Protruding plug, 8 T-shaped positioning pin, 9 Spring. Detailed Implementation

[0024] 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.

[0025] Example 1: Please refer to Figure 1-7The hinge assembly for the left and right tailgates of a car includes a first door hinge support 1 and a second door hinge support 2. The joint between the first door hinge support 1 and the second door hinge support 2 is hinged by a positioning rivet 3. The outer end surface of the first door hinge support 1 is provided with a lubricating oil storage protrusion 4. The inner surface of the lubricating oil storage protrusion 4 is provided with a lubricating oil guide channel 5. The lubricating oil guide channel 5 passes through the inner surface of the insertion hole of the positioning rivet 3. The outer surface of the lubricating oil storage protrusion 4 is threadedly connected to a threaded mounting cap 6. The surface of the cover 6 is provided with a feed hole, and a convex plug 7 is slidably engaged with the feed hole of the threaded cover 6. A T-shaped locating pin 8 is fixedly connected to the inner surface of the threaded cover 6. The outer surface of the convex plug 7 is slidably sleeved on the outer surface of the T-shaped locating pin 8. A spring 9 is sleeved on the outer surface of the T-shaped locating pin 8. By adopting a lubricating oil storage convex structure at the first door hinge support, lubricating oil can be stored. It enters the locating pin through the lubricating oil guide channel for rotational lubrication, which is convenient for lubrication, easy to add lubricating oil for maintenance, and convenient to use.

[0026] One end of the spring 9 is pressed against the inner surface of the T-shaped locating pin 8, and the other end is pressed against the outer surface of the convex plug 7. The spring 9 can press the convex plug 7 to close inside the threaded mounting cover 6. After it closes, the convex plug 7 is firmly sealed and will not leak lubricating oil.

[0027] T-shaped locating pins 8 are fixedly connected to the left and right sides of the inner end of the threaded mounting cover 6; the convex plug 7 can be sleeved and supported outside the T-shaped locating pins 8 for sliding, and the T-shaped locating pins 8 distributed on both sides can support the convex plug 7 to slide from both sides, which provides sliding positioning support and improves the stability during sliding.

[0028] The convex plug 7 has through holes on both sides. The through holes are round holes, and the outer surface of the T-shaped positioning pin 8 slides through the inner surface of the through hole. The convex plug 7 can be tightly fitted onto the T-shaped positioning pin 8 and slide without shaking. The structure is firm and has great support.

[0029] The convex plug 7 adopts a convex circular block structure, and its outer end surface is set as a spherical bulging surface structure; it can be snapped into the threaded installation cap for positioning, and its seal is stable. The bulging part makes it easy to push open the convex plug 7 after the lubricating oil bottle nozzle is snapped in.

[0030] The threaded mounting cover 6 adopts a hexagonal concave cover structure, and its outer surface is set as a hexagonal protrusion structure; this facilitates the installation of the threaded mounting cover 6. When in use, it is turned by inserting a wrench into the threaded mounting cover 6, which is convenient for installation. The surfaces of the first door hinge support 1 and the second door hinge support 2 are provided with mounting holes; the two sets of mounting holes are distributed on the surfaces of the first door hinge support 1 and the second door hinge support 2, which ensures stability during installation.

[0031] In use, the first door hinge support 1 and the second door hinge support 2 are hinged together by a positioning rivet 3. The outer surface of the first door hinge support 1 is provided with a lubricating oil storage protrusion 4. A lubricating oil guide channel 5 is formed on the inner surface of the lubricating oil storage protrusion 4, penetrating the inner surface of the insertion hole of the positioning rivet 3. During use, the lubricating oil storage protrusion 4 has a storage space to store lubricating grease, which flows through the lubricating oil guide channel 5. The lubricant can be inserted into the insertion hole to lubricate the positioning rivet 3 and the hinge. The lubrication is convenient and can reach the inside of the hinge. The lubricant storage protrusion 4 is located at the top, which can lubricate evenly from top to bottom. The outer surface of the lubricant storage protrusion 4 is connected to the threaded mounting cover 6 by a thread. The surface of the threaded mounting cover 6 has a feed hole. The feed hole of the threaded mounting cover 6 is slidably engaged with the convex plug 7. The threaded mounting cover 6 can block the lubricant storage protrusion 4, and the convex plug 7 can block the feed hole. It has strong sealing performance.

[0032] A T-shaped locating pin 8 is fixedly connected to the inner surface of the threaded mounting cover 6. The outer surface of the convex plug 7 slides onto the outer surface of the T-shaped locating pin 8. A spring 9 is fitted onto the outer surface of the T-shaped locating pin 8. One end of the spring 9 presses against the inner surface of the T-shaped locating pin 8, and the other end presses against the outer surface of the convex plug 7. The spring 9 can compress the convex plug 7 to close inside the threaded mounting cover 6. After closing, the convex plug 7 provides a firm and airtight seal, preventing lubricant leakage. In use, the convex plug 7 adopts a convex circular block structure, and its outer end surface is set as a spherical bulging surface structure. It can be locked into the threaded installation cap for positioning, and its sealing is stable. The bulging part makes it easy for the lubricating oil bottle nozzle to be locked in, and the convex plug 7 can be pushed open. After the lubricating oil bottle nozzle pushes open the convex plug 7, lubricating oil can be squeezed in and stored in the lubricating oil storage convex opening 4 for easy feeding. After feeding, the lubricating oil bottle is pulled out, and its convex plug 7 is squeezed back by the spring 9 to re-seal.

Claims

1. A hinge assembly for a left or right back door of a vehicle, comprising a first door hinge support seat (1) and a second door hinge support seat (2), characterized in that: The first door hinge support (1) and the second door hinge support (2) are hinged at the joint by a positioning rivet (3). The outer end surface of the first door hinge support (1) is provided with a lubricating oil storage protrusion (4). The inner surface of the lubricating oil storage protrusion (4) is provided with a lubricating oil guide channel (5). The lubricating oil guide channel (5) passes through the inner surface of the insertion hole of the positioning rivet (3). The outer surface of the lubricating oil storage protrusion (4) is connected to a threaded mounting cover (6) by a thread. The surface of the threaded mounting cover (6) is provided with a feed hole. A convex plug (7) is slidably engaged at the feed hole of the threaded mounting cover (6). A T-shaped positioning pin (8) is fixedly connected to the inner surface of the threaded mounting cover (6). The outer surface of the convex plug (7) is slidably sleeved on the outer surface of the T-shaped positioning pin (8). A spring (9) is sleeved on the outer surface of the T-shaped positioning pin (8).

2. The hinge assembly for left and right back doors of an automobile according to claim 1, characterized in that: One end of the spring (9) is pressed against the inner surface of the T-shaped locating pin (8), and the other end is pressed against the outer surface of the convex plug (7).

3. The hinge assembly for the left and right tailgates of an automobile according to claim 1, characterized in that: The T-shaped locating pin (8) is fixedly connected to the left and right sides of the inner end of the threaded mounting cover (6).

4. The hinge assembly for left and right back doors of an automobile according to claim 1, characterized in that: The convex plug (7) has through holes on its left and right sides. The through holes are circular holes, and the outer surface of the T-shaped positioning pin (8) slides through the inner surface of the through hole.

5. The hinge assembly for left and right back doors of an automobile according to claim 1, characterized in that: The convex plug (7) adopts a convex circular block structure, and its outer end surface is set as a spherical bulging surface structure.

6. The hinge assembly for left and right back doors of an automobile according to claim 1, characterized in that: The threaded mounting cover (6) adopts a hexagonal concave cover structure, and its outer surface is set as a hexagonal boss structure.

7. The hinge assembly for left and right back doors of an automobile according to claim 1, characterized in that: Mounting holes are provided on the surfaces of the first door hinge support (1) and the second door hinge support (2).

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