A low-wear engine hood hinge structure

Abstract

The utility model discloses a low abrasion's engine cover hinge structure, including two long arms, at least two bushings, at least one short arm and at least two rivets, still include at least two for reducing the abrasion of bushing and long arm bottom end's washer, the inside surface of rivet bottom end is formed with flange portion, after rivet is in passing through bushing inner wall surface and primary assembly hole, make long arm and short arm each other articulate, wherein, the horizontal gap between the outer periphery of bushing flat end and the inner wall of flange portion is equipped with, and the top surface of flange portion is equipped with primary vertical gap between the bottom surface of short arm, the washer is set up on the outer periphery of bushing another end, and the washer is between long arm and bushing, wherein, the second vertical gap between the bottom surface of long arm and another end of bushing is equipped with, and the falling particle of flange portion is blocked to bushing abrasion, makes the falling particle fall in horizontal gap, avoids its floating to the car, thereby influence paint surface appearance.

Description

Technical Field

[0001] This utility model relates to the technical field of engine components, and in particular to a low-wear engine hood hinge structure. Background Technology

[0002] In the traditional engine hood hinge structure, refer to Figure 2 As shown, the hinged long and short arms will wear down during repeated rotations, causing wear on the bushings and reducing the assembly quality of the engine hood. Furthermore, foreign objects generated by wear may fall into the normally operating equipment, affecting the overall operation, causing the vehicle to fail inspection, and increasing maintenance costs.

[0003] Therefore, based on the above-mentioned technical problems, this application proposes an engine hood hinge structure with low wear, low maintenance cost, and high operational stability. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide an engine hood hinge structure with low wear, low maintenance cost, and high operational stability.

[0005] To achieve the above objectives, this utility model provides a low-wear engine hood hinge structure, comprising two long arms, at least two bushings, at least one short arm, and at least two rivets. It also includes at least two washers for reducing wear between the bushings and the bottom ends of the long arms. An annular flange is formed on the inner surface of the bottom end of each rivet, wherein the flange and the inner surface of the bottom end of the rivet together form a groove. Each long arm has at least one primary mounting hole, and each end of the short arm has a secondary mounting hole. The bushings pass through... On the secondary assembly hole, after the rivet passes through the inner wall of the bushing and the primary assembly hole, the long arm and the short arm are hinged together, and the flattened end of the bushing contacts the groove. A horizontal gap is provided between the outer peripheral surface of the flattened end of the bushing and the inner wall of the flange. A primary vertical gap is provided between the bottom end of the short arm and the top end of the flange. The washer is fitted on the outer peripheral surface of the other end of the bushing and is located between the long arm and the bushing. A secondary vertical gap is provided between the bottom end of the long arm and the other end of the bushing.

[0006] Furthermore, the distance between the top of the flattened end of the bushing and the other end is greater than the thickness of the short arm, but less than the sum of the thicknesses of the washer and the short arm.

[0007] Furthermore, the gasket is made of polytetrafluoroethylene.

[0008] Furthermore, the horizontal gap is 0.5 mm, and both the first-level and second-level vertical gaps are 0.3 mm.

[0009] Furthermore, the thickness of the flattened end of the bushing is greater than the height of the flange.

[0010] Furthermore, the diameter of the inner wall of the washer is slightly larger than the diameter of the outer circumference of the other end of the bushing.

[0011] The present invention adopts the above-described solution, and its beneficial effects are as follows:

[0012] By adding washers and improving the structure of the bushing, direct contact between the two is avoided, maintaining a relative distance between the long arm and the bushing, thereby reducing bushing wear and subsequent maintenance costs. Secondly, by optimizing the rivets and setting flanges to effectively block falling particles, and collecting particles that fall off the bushing due to wear through horizontal gaps, such particles are prevented from falling into the working environment, ensuring the accuracy (pass rate) of vehicle inspections and improving production efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the hood hinge in this embodiment.

[0014] Figure 2 This is a cross-sectional schematic diagram of a traditional machine cover hinge structure.

[0015] Figure 3 This is a schematic diagram of the long arm, short arm, and the engagement of the long arm of the rivet in this embodiment.

[0016] Among them, 1-long arm, 11-primary assembly hole, 2-bulb, 3-short arm, 31-secondary assembly hole, 4-rivet, 41-flange, 42-groove, 5-washer, 6-horizontal clearance, 7-primary vertical clearance, 8-secondary vertical clearance. Detailed Implementation

[0017] To facilitate understanding of this utility model, a more complete description of it is provided below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of the utility model. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0018] See appendix Figure 1 , 3As shown, in this embodiment, a low-wear engine hood hinge structure includes two long arms 1, at least two, preferably four bushings 2, at least two, preferably two short arms 3, and at least two, preferably four rivets 4. It also includes at least two, preferably four washers 5 (the number of washers 5, bushings 2, and rivets 4 used are equal) to reduce wear between the bushings 2 and the bottom ends of the long arms 1. An annular flange 41 is formed on the inner surface of the bottom end of the rivet 4, wherein the flange 41 and the inner surface of the bottom end of the rivet 4 together form a groove 42. The long arms 1 have at least one, preferably two, primary mounting holes 11, and each end of the short arms 3 has a secondary mounting hole 31. The bushings 2 pass through the secondary mounting holes 31. After the rivets 4 pass through the inner wall of the bushing 2 and the primary mounting holes 11, the long arms 1 and short arms 3 are hinged together (the two long arms 1 are connected by the short arms 3), and the flattened end of the bushing 2 contacts the groove 42. It should be noted that, see Appendix Figure 2 As shown (position B is the high-frequency wear point of the bushing), unlike the traditional machine cover hinge structure, where both ends of the bushing 2 are flattened, in this embodiment, one end of the bushing 2 is a flattened end, and the other end is a vertical end perpendicular to the flattened end (no further flattening is required). The bottom end of the rivet 4 has a boss, and the other end is an unprocessed vertical state. After the rivet 4 passes through the inner wall of the bushing 2 and the first-level assembly hole 11, the other end of the rivet 4 is riveted to securely hinge the long arm 1 and the short arm 3.

[0019] See appendix Figure 3 As shown, further, a horizontal gap 6 is provided between the outer peripheral surface of the flattened end of the bushing 2 and the inner wall of the flange 41. The distance of the horizontal gap 6 is preferably 0.5 mm. The thickness of the flattened end of the bushing 2 is greater than the height of the flange 41, thereby providing a vertical gap 7 between the bottom end face of the short arm 3 and the top end face of the flange 41. The washer 5 is fitted on the outer peripheral surface of the other end of the bushing 2, and the washer 5 is located between the long arm 1 and the bushing 2. The distance from the top of the flattened end of the bushing 2 to the other end is greater than the thickness of the short arm 3, but less than the sum of the thicknesses of the washer 5 and the short arm 3, thereby providing a vertical gap 7 between the bottom end face of the long arm 1 and the bushing 2. A secondary vertical gap 8 is provided between the other ends of 2. The primary vertical gap 7 and the secondary vertical gap 8 are preferably both 0.3mm. Specifically, when the coating on the bushing 2 produces detached particles due to rotational wear, the flange 41 effectively blocks the detached particles, and the horizontal gap 6 receives the detached particles, preventing the particles from scattering onto the vehicle and affecting the paint appearance and vehicle inspection. Secondly, by setting the primary vertical gap 7 and the secondary vertical gap 8, direct contact between the long arm 1 and the short arm 3 and the rivet 4 is avoided, thus preventing metal-to-metal friction noise, making it easier for users to judge whether the operating condition of the hood hinge structure is normal.

[0020] Furthermore, the material of gasket 5 is preferably polytetrafluoroethylene (PTFE). PTFE has the advantages of wear resistance, high temperature resistance, and corrosion resistance, which can effectively reduce rotational wear between it and the long arm 1, avoid the shedding of particles due to rotational wear with the long arm 1, reduce maintenance costs, and adapt to most engine working environments, thereby ensuring the normal operation of the mechanism.

[0021] See appendix Figure 3 As shown, the diameter of the inner wall of the washer 5 is slightly larger than the diameter of the outer circumference of the other end of the bushing 2, thus ensuring that the washer 5 can be fitted onto the outer circumference of the other end of the bushing 2. Furthermore, between the long arm 1 and the bushing 2, unlike the traditional hood hinge structure where the bushing 2 on the long arm 1 and the short arm 3 are in direct contact, causing wear on one end of the bushing 2 due to rotation, the coating on the bushing 2 wears off and the detached particles scatter onto the vehicle, affecting the paint appearance and causing the vehicle to fail inspection, by maintaining a relative distance between the long arm 1 and the short arm 3 (the specific distance is set according to the actual technical requirements), wear between the long arm 1 and the bushing 2 is avoided, ensuring the vehicle's inspection pass rate and reducing maintenance costs.

[0022] The embodiments described above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any way. Any modifications or alterations made by those skilled in the art to the technical solution of this utility model without departing from its scope are equivalent embodiments of this utility model. Therefore, all equivalent changes made based on the concept of this utility model without departing from its scope should be covered within the protection scope of this utility model.

Claims

1. A low-wear engine hood hinge structure, comprising two long arms (1), at least two bushings (2), at least one short arm (3), and at least two rivets (4), characterized in that: It also includes at least two washers (5) for reducing wear between the bushing (2) and the bottom end of the long arm (1). An annular flange (41) is formed on the inner side of the bottom end of the rivet (4), wherein the flange (41) and the inner side of the bottom end of the rivet (4) together form a groove (42). The long arm (1) is formed with at least one primary mounting hole (11), and secondary mounting holes (31) are formed on both ends of the short arm (3). The bushing (2) passes through the secondary mounting holes (31). After the rivet (4) passes through the inner wall of the bushing (2) and the primary mounting hole (11), the wear between the bushing (2) and the rivet (4) is reduced. The long arm (1) and the short arm (3) are hinged to each other, and the flattened end of the bushing (2) contacts the groove (42). A horizontal gap (6) is provided between the outer peripheral surface of the flattened end of the bushing (2) and the inner wall of the flange (41). A first-level vertical gap (7) is provided between the bottom end surface of the short arm (3) and the top end surface of the flange (41). The washer (5) is fitted on the outer peripheral surface of the other end of the bushing (2), and the washer (5) is between the long arm (1) and the bushing (2). A second-level vertical gap (8) is provided between the bottom end surface of the long arm (1) and the other end of the bushing (2).

2. The low-wear engine hood hinge structure according to claim 1, characterized in that: The distance between the top of the flattened end of the bushing (2) and the other end is greater than the thickness of the short arm (3) and less than the sum of the thicknesses of the washer (5) and the short arm (3).

3. The low-wear engine hood hinge structure according to claim 1, characterized in that: The washer (5) is made of polytetrafluoroethylene.

4. The low-wear engine hood hinge structure according to claim 1, characterized in that: The horizontal gap (6) is 0.5 mm, and the first-level vertical gap (7) and the second-level vertical gap (8) are both 0.3 mm.

5. The low-wear engine hood hinge structure according to claim 1, characterized in that: The thickness of the flattened end of the bushing (2) is greater than the height of the flange (41).

6. The low-wear engine hood hinge structure according to claim 1, characterized in that: The diameter of the inner wall of the washer (5) is slightly larger than the diameter of the outer circumference of the other end of the bushing (2).

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