Trunk hinge structure for passenger car

By using a sliding guide structure between the guide block and the guide plate, and the design of a sponge wiper, the problems of easy deformation and dust accumulation in car trunk hinges during frequent opening and closing are solved, thereby improving the stability and reliability of the hinges.

CN224300645UActive Publication Date: 2026-05-29ZHEJIANG LONGJI AUTO PARTS

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHEJIANG LONGJI AUTO PARTS
Filing Date
2025-06-13
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing car trunk hinges are prone to bending and deformation during frequent opening and closing, have insufficient structural strength, and lack effective protection, leading to the adhesion of dust and impurities, which affects their service life and normal function.

Method used

The sliding guide structure of guide blocks and guide plates enhances the overall strength of the electric hinge rod and output shaft. Dust is cleaned by wiping the output shaft surface with a sponge. Combined with the bolt connection for easy disassembly and assembly, the hinge's stability and maintainability are ensured.

Benefits of technology

It improves the smoothness of luggage door opening and closing, extends the service life of hinges, reduces wear and tear and the probability of failure, and enhances user experience and reliability.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN224300645U_ABST
    Figure CN224300645U_ABST
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Abstract

The utility model relates to passenger car luggage compartment hinge technical field especially passenger car luggage compartment hinge structure, its technical scheme includes: electric hinge pole, be equipped with output shaft on the electric hinge pole, the outer surface both ends of electric hinge pole all are fixedly installed with the guide plate, the output shaft is fixedly installed with the connecting frame, the both ends of connecting frame all are welded with the reinforcing frame, the first mounting block and second mounting block are sleeved on the electric hinge pole, the first mounting block and second mounting block all are equipped with the fixed frame, the inner wall of fixed frame is installed with the sponge wipe, the one end of reinforcing frame away from connecting frame is welded with the guide block, the guide block sliding sleeve is connected in the guide plate, the first mounting block and second mounting block are fixedly installed on the electric hinge pole through the bolt, the utility model satisfies passenger car luggage compartment hinge use, can strengthen when using, avoid the bending that causes opening and closing for a long time, and can clean and maintain the shaft body when opening and closing.
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Description

Technical Field

[0001] This utility model relates to the field of passenger car trunk hinge technology, specifically to passenger car trunk hinge structure. Background Technology

[0002] In modern automotive manufacturing, the trunk hinge, as a core functional component connecting the trunk door to the vehicle body, plays a decisive role in ensuring smooth opening and closing of the trunk door. Based on the structural design and functional requirements of different vehicle models, hinges are mainly divided into several types, including side hinges, bottom hinges, top hinges, electric hinges, and dual hinges. These diverse hinge types, through ingenious mechanical structure design, provide users with a convenient trunk experience, meeting the differentiated needs of various vehicles in terms of spatial layout, appearance, and usage scenarios.

[0003] A search revealed that patent CN221590759U discloses a car trunk hinge. While this device prevents the trunk door hinge from colliding with the trunk body during use, thus avoiding dents or paint damage over time, it still has technical flaws. Firstly, its structural strength design is insufficient. Under frequent opening and closing operations and alternating loads, it is prone to bending and deformation, affecting the smoothness and positioning accuracy of the trunk door. Secondly, due to the lack of an effective protective structure, dust, grit, and other impurities easily adhere to the hinge output shaft surface during daily use and opening / closing. These foreign objects not only exacerbate frictional wear between moving parts, shortening the hinge's lifespan, but may also cause jamming, affecting the normal function of the trunk door. Therefore, there is an urgent need to optimize and improve the structural design of existing car trunk hinges to enhance their performance and reliability. Utility Model Content

[0004] In view of the shortcomings of the prior art, this utility model provides a passenger car trunk hinge structure, which solves the problems mentioned in the background art.

[0005] The solution to the above-mentioned technical problems provided by this utility model is as follows:

[0006] A passenger car trunk hinge structure includes an electric hinge rod, on which an output shaft is provided;

[0007] Guide plates are fixedly installed at both ends of the outer surface of the electric hinge rod, and a connecting frame is fixedly installed on the output shaft. Reinforcing frames are welded to both ends of the connecting frame.

[0008] The electric hinge rod is fitted with a first mounting block and a second mounting block. Both the first mounting block and the second mounting block are provided with a fixing frame. A sponge is fitted to the inner wall of the fixing frame.

[0009] Based on the above technical solution, the present invention can be further improved as follows.

[0010] Furthermore, the rear end face of the electric hinge rod is provided with a fixing plate, and a mounting screw is sleeved inside the fixing plate.

[0011] The beneficial effects of adopting the above-mentioned further solutions are:

[0012] By installing screws through the fixing plate, the electric hinge rod can be securely fixed to the trunk or body of a passenger car.

[0013] Furthermore, a guide block is welded to one end of the reinforcing frame away from the connecting frame, and the guide block is slidably sleeved inside the guide plate.

[0014] The beneficial effects of adopting the above-mentioned further solutions are:

[0015] The guide block and guide plate form a sliding guide structure, which can precisely constrain the movement trajectory of the connecting frame during the opening and closing of the suitcase, preventing wobbling and deviation, thus ensuring smooth opening and closing of the suitcase and improving the user experience. In addition, the connecting reinforcement frame enhances the overall strength of the electric hinge rod and output shaft, enabling the output shaft to withstand greater loads, extending the service life of the hinge, and reducing wear and failures caused by structural instability.

[0016] Furthermore, the first mounting block and the second mounting block are connected by bolts, and a nut is threaded onto the bolt.

[0017] The beneficial effects of adopting the above-mentioned further solutions are:

[0018] The bolt and nut combination connection method makes the assembly and disassembly of the first and second mounting blocks simple and easy. When it is necessary to replace the sponge or clean or repair components such as the mounting bracket, simply unscrew the nuts and remove the bolts to quickly separate the two mounting blocks, greatly improving maintenance efficiency.

[0019] Furthermore, the first mounting block and the second mounting block are fixedly mounted on the electric hinge rod by bolts.

[0020] The beneficial effects of adopting the above-mentioned further solutions are:

[0021] The first and second mounting blocks are bolted to the electric hinge rod, ensuring stability of the mounting blocks during hinge operation. The stable mounting blocks provide a reliable support base for the mounting bracket and the sponge, ensuring the sponge remains in contact with the output shaft, continuously performing its cleaning function. This effectively reduces wear on the output shaft caused by dust and impurities, improving the overall performance and reliability of the hinge.

[0022] Furthermore, a mounting bracket is fixedly installed on the fixed frame, and one end of the mounting bracket opposite to the fixed frame is fixedly installed on the first mounting block and the second mounting block.

[0023] The beneficial effects of adopting the above-mentioned further solutions are:

[0024] The mounting bracket provides support points for the fixing frame, enhancing its structural strength and stability.

[0025] This utility model provides a hinge structure for a passenger car trunk. It has the following advantages:

[0026] Through the sliding engagement of the guide block and the guide plate, the movement trajectory of the connecting frame during the opening and closing of the suitcase is precisely constrained, avoiding the wobbling and misalignment problems that are common in traditional hinges. This precise guiding mechanism not only improves the user experience but also effectively reduces component wear caused by unstable movement, extending the hinge's lifespan.

[0027] The reinforced frame significantly enhances the overall structural strength of the electric hinge rod and output shaft, enabling it to withstand greater loads. This design reduces the risk of structural deformation during frequent opening and closing of the luggage compartment, ensuring long-term stable operation of the hinge.

[0028] The first and second mounting blocks are connected by bolts, facilitating quick disassembly and assembly. This design makes maintenance tasks such as replacing the sponge and cleaning and repairing the mounting bracket efficient and simple, reducing usage and time costs and improving product maintainability.

[0029] A sponge is attached to the surface of the output shaft, continuously removing dust and impurities during hinge movement. This innovative design effectively reduces wear on the output shaft and lowers the probability of failure due to foreign matter accumulation, thereby improving the reliability and stability of the entire hinge system. Attached Figure Description

[0030] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and are used to explain the present invention, but do not constitute an undue limitation of the present invention.

[0031] In the attached diagram:

[0032] Figure 1 This is a front view schematic diagram of the present invention;

[0033] Figure 2 This is a side view of the present invention;

[0034] Figure 3 This is a cross-sectional schematic diagram of the guide plate of this utility model;

[0035] Figure 4 This is a schematic diagram of the installation of the first mounting block of this utility model.

[0036] The attached diagram lists the components represented by each number as follows:

[0037] 1. Electric hinge rod; 101. Fixing plate; 102. Output shaft; 2. Connecting frame; 201. Reinforcing frame; 202. Guide plate; 203. Guide block; 3. First mounting block; 301. Bolt; 302. Second mounting block; 303. Sponge; 304. Fixing frame; 305. Mounting frame. Detailed Implementation

[0038] 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.

[0039] Please see Figures 1 to 4 As shown, the embodiments provided by this utility model are as follows:

[0040] Example 1: A passenger car trunk hinge structure, including an electric hinge rod 1, on which an output shaft 102 is provided;

[0041] Guide plates 202 are fixedly installed on both ends of the outer surface of the electric hinge rod 1, and a connecting frame 2 is fixedly installed on the output shaft 102. Reinforcing frames 201 are welded to both ends of the connecting frame 2.

[0042] The electric hinge rod 1 is fitted with a first mounting block 3 and a second mounting block 302. Both the first mounting block 3 and the second mounting block 302 are provided with a fixing frame 304. A sponge wiper 303 is fitted to the inner wall of the fixing frame 304.

[0043] The rear end face of the electric hinge rod 1 is provided with a fixing plate 101, and a mounting screw is sleeved inside the fixing plate 101. By passing the mounting screw through the fixing plate 101, the electric hinge rod 1 can be firmly fixed to the trunk or body of the passenger car.

[0044] A guide block 203 is welded to the end of the reinforcing frame 201 opposite to the connecting frame 2. The guide block 203 is slidably fitted inside the guide plate 202. The guide block 203 and the guide plate 202 form a sliding guide structure, which can precisely constrain the movement trajectory of the connecting frame 2 during the opening and closing of the suitcase, avoiding shaking or deviation, thereby ensuring the smooth opening and closing of the suitcase and improving the user experience. In addition, the connecting reinforcing frame 201 enhances the overall strength of the electric hinge rod 1 and the output shaft 102, enabling the output shaft 102 to withstand a larger load, extending the service life of the hinge, and reducing wear and failure caused by structural instability.

[0045] Example 2: To clean and maintain the hinge shaft during use and prevent dust and debris from adhering to it and affecting its operation, for example, Figures 1 to 4 As shown, this utility model also includes:

[0046] The first mounting block 3 and the second mounting block 302 are connected by bolts 301, with nuts threaded onto the bolts 301. This combination of bolts 301 and nuts makes the assembly and disassembly of the first mounting block 3 and the second mounting block 302 simple and easy. When it is necessary to replace the sponge 303, or to clean or repair components such as the mounting bracket 304, simply unscrew the nuts and remove the bolts 301 to quickly separate the two mounting blocks, greatly improving maintenance efficiency.

[0047] The first mounting block 3 and the second mounting block 302 are fixedly mounted on the electric hinge rod 1 by bolts 301. Fixing the first mounting block 3 and the second mounting block 302 to the electric hinge rod 1 by bolts 301 ensures that the mounting blocks remain stable during hinge operation. The stable mounting blocks provide a reliable support base for the fixing frame 304 and the sponge 303, ensuring that the sponge 303 always remains in contact with the output shaft 102, continuously performing its cleaning function. This effectively reduces wear on the output shaft 102 caused by the accumulation of dust and impurities, improving the overall performance and reliability of the hinge.

[0048] A mounting bracket 305 is fixedly installed on the fixed frame 304. One end of the mounting bracket 305 away from the fixed frame 304 is fixedly installed on the first mounting block 3 and the second mounting block 302. The mounting bracket 305 provides a support point for the fixed frame 304, enhancing the structural strength and stability of the fixed frame 304.

[0049] Working principle:

[0050] The electric hinge rod 1 serves as a power source, and through an internal drive mechanism, it causes the output shaft 102 to move up and down, providing power for the opening and closing of the suitcase.

[0051] When the output shaft 102 rotates, it drives the connecting frame 2 to move. The reinforcing frames 201 at both ends of the connecting frame 2 slide within the guide plate 202 via guide blocks 203. This sliding guide structure precisely constrains the movement trajectory of the connecting frame 2, ensuring that the suitcase opens and closes smoothly along a preset path.

[0052] The reinforcing frame 201 enhances the overall structural strength of the electric hinge rod 1 and the output shaft 102, enabling it to withstand the weight of the suitcase and its contents, and reducing the risk of structural deformation.

[0053] The mounting bracket 304, fixed to the first mounting block 3 and the second mounting block 302, continuously adheres to the surface of the output shaft 102 via a sponge wiper 303. During the rotation of the output shaft 102, the sponge wiper 303 removes dust and impurities from its surface, reducing wear.

[0054] When it is necessary to replace the sponge 303 or repair related parts, the first mounting block 3 and the second mounting block 302 can be quickly separated by removing the bolt 301, thus achieving convenient maintenance.

[0055] The electric hinge rod 1 is securely mounted to the trunk or vehicle body via a fixing plate 101 and mounting screws, ensuring the stability of the entire hinge system during operation.

[0056] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0057] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A passenger car trunk hinge structure, including an electric hinge rod (1), wherein the electric hinge rod (1) is provided with an output shaft (102), characterized in that: Guide plates (202) are fixedly installed on both ends of the outer surface of the electric hinge rod (1), and a connecting frame (2) is fixedly installed on the output shaft (102). Reinforcing frames (201) are welded to both ends of the connecting frame (2). The electric hinge rod (1) is fitted with a first mounting block (3) and a second mounting block (302). The first mounting block (3) and the second mounting block (302) are each provided with a fixing frame (304). A sponge wiper (303) is attached to the inner wall of the fixing frame (304).

2. The passenger vehicle trunk hinge structure according to claim 1, characterized in that: The rear end face of the electric hinge rod (1) is provided with a fixing plate (101), and the fixing plate (101) is fitted with a mounting screw.

3. The passenger vehicle trunk hinge structure according to claim 1, characterized in that: The reinforcing frame (201) has a guide block (203) welded to one end away from the connecting frame (2), and the guide block (203) is slidably sleeved in the guide plate (202).

4. The passenger vehicle trunk hinge structure according to claim 1, characterized in that: The first mounting block (3) and the second mounting block (302) are connected by bolts (301), and a nut is threaded onto the bolts (301).

5. The passenger vehicle trunk hinge structure according to claim 4, characterized in that: The first mounting block (3) and the second mounting block (302) are fixedly mounted on the electric hinge rod (1) by bolts (301).

6. The passenger vehicle trunk hinge structure according to claim 1, characterized in that: A mounting bracket (305) is fixedly installed on the fixed frame (304), and one end of the mounting bracket (305) away from the fixed frame (304) is fixedly installed on the first mounting block (3) and the second mounting block (302).