A double-layer reinforcement structure for automotive door hinges

Abstract

This utility model relates to the field of automotive parts technology, specifically a double-layer reinforced structure for automotive door hinges. The utility model includes a first mounting foot and a second mounting foot. Two screws are threaded into the second mounting foot, with a hexagonal head fixedly connected to one end of each screw. A groove is formed on the surface of the hexagonal head. A fixing plate is fixedly connected to the surface of the second mounting foot. Two hollow tubes are fixedly connected to both sides of the fixing plate. A sliding rod is slidably connected to the inner wall of each hollow tube. A limit block is fixedly connected to one end of each sliding rod, and the inner wall of the groove is slidably connected to the limit block. Springs are fixedly connected to both sides of the fixing plate, with one end of each spring fixedly connected to the limit block. The springs are sleeved on the arc surfaces of the hollow tubes and sliding rods. This design solves the problem that traditional single-screw automotive door hinges, under conditions of frequent door opening and closing and vehicle vibration, are prone to loosening due to uneven stress, potentially leading to door sagging and wobbling.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, and in particular to a double-layer reinforcement structure for automotive door hinges. Background Technology

[0002] Automotive door hinges are the connecting devices between car doors and the car body, used to realize the opening and closing of the doors. They also bear the weight of the doors, transmit loads, and ensure the positioning accuracy of the doors. In the current automotive manufacturing industry, as a key component connecting the doors and the car body, the performance of door hinges directly affects the safety and stability of the vehicle. In terms of fastening methods, most traditional car door hinges use a single screw to fix them to the second mounting foot. This method is inadequate when facing the complex forces generated by the frequent opening and closing of the doors. During the opening and closing process, the doors not only bear their own weight but also experience impact forces and vibration loads from different directions due to factors such as acceleration, deceleration, and bumpy road conditions. The single screw has to bear these external forces alone, which makes it easy for it to gradually loosen due to uneven force distribution. After the screw loosens, the connection stability between the door and the car body decreases significantly, and the door is prone to sagging and shaking. This seriously affects the door's sealing and sound insulation, leading to increased interior noise, air leakage, and water leakage, greatly reducing the driving and riding experience.

[0003] Regarding the above-mentioned and existing related technologies, the inventor believes that the following defects often exist: In the case of traditional single-screw fixed car door hinges, the screw is prone to loosening due to uneven force under the conditions of frequent opening and closing of the car door and vehicle bumps and vibrations, which may cause the car door to sink and shake; therefore, a double-layer reinforced structure for car door hinges is proposed to address the above problems. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing automotive door hinges that are fixed with a single screw. Under conditions of frequent door opening and closing and vehicle vibration, the screw is prone to loosening due to uneven stress, which may lead to the door sagging and shaking. Therefore, a double-layer reinforced structure for automotive door hinges is proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a double-layer reinforced structure for an automotive door hinge, comprising a first mounting foot and a second mounting foot. Two screws are threaded into the second mounting foot, and one end of each screw is fixedly connected to a hexagonal head. A groove is formed on the surface of the hexagonal head. A fixing plate is fixedly connected to the surface of the second mounting foot. Two hollow tubes are fixedly connected to both sides of the fixing plate. A sliding rod is slidably connected to the inner wall of the hollow tube. A limit block is fixedly connected to one end of the sliding rod. The inner wall of the groove is slidably connected to the limit block. Springs are fixedly connected to both sides of the fixing plate. One end of each spring is fixedly connected to the limit block. The springs are sleeved on the arc surfaces of the hollow tubes and the sliding rods.

[0006] The aforementioned components achieve the following effects: they provide a stronger fastening force compared to traditional single-screw fastening by using a threaded connection with double screws inside the second mounting foot. At the same time, the components consisting of hollow tubes, sliding rods, limiting blocks, and springs on both sides of the fixing plate can reduce the risk of screw loosening due to vibration during frequent opening and closing of the car door by utilizing the cooperation between the limiting block and the hexagonal head groove when the screw is subjected to external impact. This enhances the stability of the connection between the hinge and the car door and body, and effectively prevents the car door from sinking or shaking.

[0007] Preferably, the arc surface of the limiting block is fixedly connected to a lever plate.

[0008] The effect achieved by the above-mentioned components is that, by setting up the lever, when installing or removing the screws of the car door hinge, the sliding of the limit block can be controlled directly by moving the lever, eliminating the need to find small tools to insert into the hexagonal head groove or to pry the limit block by hand, greatly reducing the difficulty of operation.

[0009] Preferably, several anti-slip protrusions are fixedly connected to both sides of the lever, and the several anti-slip protrusions are evenly distributed in a linear array on both sides of the lever.

[0010] The effect achieved by the above components is as follows: by setting anti-slip protrusions, the friction between the lever and the fingers is increased, allowing the hand to apply force more steadily and improving the smoothness of the hinge installation and disassembly process.

[0011] Preferably, both the first mounting foot and the second mounting foot are provided with a plurality of reinforcing ribs, which are evenly distributed in a linear array within the first mounting foot and the second mounting foot, and the reinforcing ribs are made of aluminum alloy.

[0012] The effect achieved by the above components is that, by setting reinforcing ribs, the deformation resistance of the mounting feet can be improved compared to structures without reinforcing ribs, thus ensuring the long-term stable operation of the hinge.

[0013] Preferably, the surfaces of both the first mounting foot and the second mounting foot are coated with an anti-corrosion coating, which is a graphene layer.

[0014] The aforementioned components achieve the following effects: by applying an anti-corrosion coating, they effectively block the penetration of corrosive media such as oxygen, water vapor, and chloride ions, and resist the erosion of harsh chemical environments such as strong acids and strong alkalis, significantly slowing down the corrosion process of the metal substrate and maintaining the integrity of the structure.

[0015] Preferably, the outer side of the anti-corrosion coating is coated with a wear-resistant coating, which is a polyetheretherketone layer.

[0016] The effect achieved by the above components is that by setting a wear-resistant coating, frictional wear can be effectively resisted, the wear rate of the hinge surface can be significantly reduced, the frequency of hinge replacement due to wear can be reduced, and the service life of the device can be improved.

[0017] The beneficial effects of this utility model are: In this application, the threaded connection method of double screws inside the second mounting foot provides stronger fastening force compared to the traditional single screw fixing. At the same time, the components consisting of hollow tubes, sliding rods, limit blocks, and springs on both sides of the fixing plate can reduce the risk of screw loosening due to vibration during frequent opening and closing of the car door by utilizing the cooperation of the limit block and the hexagonal head groove when the screw is subjected to external impact. This enhances the stability of the connection between the hinge and the car door and body, and effectively prevents the car door from sinking or shaking. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of this utility model; Figure 2 For this practical application Figure 1 Partial structural diagram; Figure 3 This is a schematic diagram of the anti-slip protrusions in this practical application; Figure 4 This is a schematic diagram of the coating structure on the surface of the mounting feet in this utility model.

[0019] Legend: 1. First mounting foot; 2. Second mounting foot; 3. Screw; 4. Hex head; 5. Fixing plate; 6. Hollow tube; 7. Slide rod; 8. Limiting block; 9. Spring; 10. Pulley; 11. Anti-slip protrusions; 12. Reinforcing rib; 13. Anti-corrosion coating; 14. Wear-resistant coating. Detailed Implementation

[0020] Reference Figure 1 , Figure 2 Diagram and Figure 4As shown, this utility model provides a technical solution: a double-layer reinforced structure for an automotive door hinge, including a first mounting foot 1 and a second mounting foot 2. Two screws 3 are threaded into the second mounting foot 2, and one end of each screw 3 is fixedly connected to a hexagonal head 4. A groove is formed on the surface of the hexagonal head 4. A fixing plate 5 is fixedly connected to the surface of the second mounting foot 2. Two hollow tubes 6 are fixedly connected to both sides of the fixing plate 5. A sliding rod 7 is slidably connected to the inner wall of the hollow tube 6. A limit block 8 is fixedly connected to one end of each sliding rod 7. The inner wall of the groove is slidably connected to the limit block 8. Springs 9 are fixedly connected to both sides of the fixing plate 5. One end of each spring 9 is fixedly connected to the limit block 8. The springs 9 are sleeved on the arc surfaces of the hollow tubes 6 and the sliding rods 7. The hinge is secured by the second mounting foot 2. The threaded connection of the double screws 3 inside foot 2 provides stronger fastening force compared to the traditional single screw 3 fixing. Meanwhile, the assembly consisting of hollow tubes 6, sliding rods 7, limiting blocks 8, and springs 9 on both sides of the fixing plate 5 can reduce the risk of screw 3 loosening due to vibration during frequent opening and closing of the car door when the screw 3 is subjected to external impact. This is achieved by utilizing the cooperation between the limiting block 8 and the groove of the hexagonal head 4, enhancing the stability of the hinge connection to the car door and body, and effectively preventing the door from sinking or shaking. A lever 10 is fixedly connected to the arc surface of the limiting block 8. By setting the lever 10, the sliding of the limiting block 8 can be directly controlled by moving the lever 10 when installing or removing the car door hinge screw 3, eliminating the need to search for small tools to insert into the hexagonal head. The 4 grooves or direct hand-operated limit block 8 greatly reduce the difficulty of operation. Several anti-slip protrusions 11 are fixedly connected to both sides of the lever 10. These anti-slip protrusions 11 are evenly distributed in a linear array on both sides of the lever 10. By setting the anti-slip protrusions 11, the friction between the lever 10 and the fingers is increased, allowing for a more stable application of force and improving the smoothness of hinge installation and disassembly. Several reinforcing ribs 12 are provided inside the first mounting foot 1 and the second mounting foot 2. These reinforcing ribs 12 are evenly distributed in a linear array within the first mounting foot 1 and the second mounting foot 2. The reinforcing ribs 12 are made of aluminum alloy. By setting the reinforcing ribs 12, compared to a structure without reinforcing ribs 12, the reinforcing ribs 12 can better support the mounting foot. The improved deformation resistance ensures long-term stable operation of the hinge. Both the first mounting foot 1 and the second mounting foot 2 are coated with an anti-corrosion coating 13, which is a graphene layer. By setting the anti-corrosion coating 13, the penetration of corrosive media such as oxygen, water vapor and chloride ions is effectively blocked, and the erosion of harsh chemical environments such as strong acids and strong alkalis is resisted. This significantly slows down the corrosion process of the metal substrate and maintains the integrity of the structure. The outer side of the anti-corrosion coating 13 is coated with a wear-resistant coating 14, which is a polyetheretherketone layer. By setting the wear-resistant coating 14, friction wear is effectively resisted, the wear rate of the hinge surface is significantly reduced, the frequency of hinge replacement due to wear is reduced, and the service life of the device is improved.

[0021] Working principle: The car door hinge connects to the car door and body via the first mounting foot 1 and the second mounting foot 2. The double screws 3 inside the second mounting foot 2 are designed as a basic reinforcement layer. During installation, the two screws 3 pass through the threaded holes of the second mounting foot 2 and engage with the corresponding threaded structure on the car body or door. Compared to the traditional single screw 3, the double screw 3 threaded connection provides stronger fastening force, evenly distributing the weight of the car door and the tensile and shear forces generated during opening and closing, reducing the load on a single screw 3 and minimizing the risk of loosening. Based on this, the limiting assembly consisting of the fixing plate 5, hollow tube 6, slide rod 7, limiting block 8, and spring 9 forms a second layer of reinforcement. When the car door... When the screw 3 is subjected to external impact due to opening and closing or vehicle vibration, the elastic potential energy of the spring 9 will always push the limiting block 8 into the groove of the hexagonal head 4, thereby reducing the possibility of the screw 3 loosening due to vibration during frequent opening and closing of the door. This further enhances the stability of the hinge connection and achieves a threaded connection method using two screws 3 inside the second mounting foot 2. Compared with the traditional single screw 3 fixing, this provides a stronger fastening force. At the same time, the components consisting of the hollow tube 6, slide rod 7, limiting block 8, and spring 9 on both sides of the fixing plate 5 can reduce the loosening of the screw due to vibration during frequent opening and closing of the door by utilizing the cooperation between the limiting block 8 and the groove of the hexagonal head 4 when the screw 3 is subjected to external impact. 3. To mitigate the risk of loosening, enhance the stability of the hinge connection to the door and body, effectively preventing the door from sinking or wobbling. When it is necessary to remove screw 3, the sliding of the limiting block 8 can be easily controlled by moving the lever 10. The anti-slip protrusions 11 linearly distributed on both sides of the lever 10 increase the friction between the hand and the lever 10, ensuring a stable grip during operation. Pushing the lever 10 overcomes the spring force of the spring 9, and the lever 10 drives the limiting block 8 to slide out of the groove of the hexagonal head 4. The limiting block 8 will squeeze the slide rod 7, and then the slide rod 7 will slide in the hollow tube 6, releasing the limitation on screw 3. Using a tool to rotate the hexagonal head 4, screw 3 can be quickly loosened, significantly improving assembly efficiency. The first mounting foot 1 and the second mounting foot 2... The aluminum alloy reinforcing ribs 12 inside the mounting foot 2 are arranged in a linear array to form an integrated support structure with the mounting foot body. The aluminum alloy material has high strength and lightweight characteristics, which can reduce the overall weight of the hinge, effectively disperse stress, and enhance the deformation resistance of the mounting foot. The graphene anti-corrosion coating 13 tightly covers the surface of the first and second mounting feet, isolating them from corrosive media such as oxygen, water vapor, and chloride ions. At the same time, it resists acid and alkali corrosion due to its chemical inertness. With its self-healing properties, it prevents the spread of corrosion when the coating is damaged. The polyetheretherketone wear-resistant coating 14 on the outside further enhances the protective ability, which can resist the friction wear caused by frequent opening and closing of the car door, reduce wear, and maintain the integrity of the structure.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art will be able to understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A double-layer reinforced structure of an automobile door hinge comprising a first mounting leg (1) and a second mounting leg (2), characterized in that: The second mounting foot (2) has two screws (3) inserted into its internal thread. One end of each screw (3) is fixedly connected to a hexagonal head (4). The surface of the hexagonal head (4) has a groove. The surface of the second mounting foot (2) is fixedly connected to a fixing plate (5). Two hollow tubes (6) are fixedly connected to both sides of the fixing plate (5). A sliding rod (7) is slidably connected to the inner wall of the hollow tube (6). One end of the sliding rod (7) is fixedly connected to a limit block (8). The inner wall of the groove is slidably connected to the limit block (8). Springs (9) are fixedly connected to both sides of the fixing plate (5). One end of the spring (9) is fixedly connected to the limit block (8). The spring (9) is sleeved on the arc surface of the hollow tube (6) and the sliding rod (7).

2. The double-layer reinforced structure of a vehicle door hinge according to claim 1, characterized in that: The arc surface of the limiting block (8) is fixedly connected to the lever plate (10).

3. The double reinforced structure of a vehicle door hinge according to claim 2, wherein: The dial plate (10) has several anti-slip protrusions (11) fixedly connected to both sides, and the several anti-slip protrusions (11) are evenly distributed in a linear array on both sides of the dial plate (10).

4. The double reinforced structure of a vehicle door hinge according to claim 1, wherein: The first mounting foot (1) and the second mounting foot (2) are each provided with a plurality of reinforcing ribs (12). The plurality of reinforcing ribs (12) are evenly distributed in a linear array within the first mounting foot (1) and the second mounting foot (2). The reinforcing ribs (12) are aluminum alloy layers.

5. The double reinforced structure of a vehicle door hinge according to claim 1, wherein: The surfaces of the first mounting foot (1) and the second mounting foot (2) are coated with an anti-corrosion coating (13), which is a graphene layer.

6. The double reinforced structure of a vehicle door hinge according to claim 5, wherein: The outer side of the anti-corrosion coating (13) is coated with a wear-resistant coating (14), which is a polyether ether ketone layer.

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