Vehicle door hinge and vehicle

Abstract

The utility model relates to a vehicle door hinge and a vehicle, and the vehicle door hinge comprises a vehicle door connecting part, a hinge shaft and a limiting part; the hinge shaft comprises a shaft part, a ball head and a supporting part arranged in the circumferential direction of the shaft part, the ball head is coaxially arranged at one end of the shaft part, the peripheral wall of the ball head is of a spherical surface structure, the diameter of the ball head is larger than that of the shaft part, and a first spherical surface is arranged on the side, facing the ball head, of the supporting part and is concentric with the ball head; a mounting hole is formed in the vehicle door connecting part, the ball head is located in the mounting hole, a second spherical surface is arranged at the end, facing the supporting part, of the vehicle door connecting part, and the first spherical surface and the second spherical surface are concentrically attached; the limiting part is arranged in the mounting hole and is used for limiting the separation of the ball head and the mounting hole. According to the vehicle door hinge, self-adaptive change of the axis can be achieved, and the situations that due to errors generated in the manufacturing and assembling process, the vehicle door hinge is not coaxial, opening and closing of a vehicle door are affected, and a hinge shaft deforms and even fractures are avoided.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, specifically to a door hinge and a vehicle. Background Technology

[0002] Door hinges are one of the more critical components in a vehicle's opening and closing system. They primarily connect the door to the vehicle body, allowing the door to rotate relative to the body and thus open and close. In addition, door hinges also provide support for the door.

[0003] The door hinge includes a door connecting part, a body connecting part, and a hinge shaft. The door connecting part is fixed to the door, the body connecting part is fixed to the body, one end of the hinge shaft is rotatably connected to the door connecting part, and the other end of the hinge shaft is fixed to the body connecting part. Specifically, the body connecting part is provided with a fixing hole, and the hinge shaft passes through the fixing hole and is fixed to the body connecting part.

[0004] The same car door is connected to the body by two door hinges. The hinge axis of the door hinge and the body connection part are installed on the body and cannot be adjusted. When the manufacturing tolerance of the body is large, the axis of the hinge axis of the two door hinges may not be collinear, and the coaxiality of the axis of the mounting hole of the two door connection parts may also be deviated. As a result, the two door hinges are not coaxial when installed, which will affect the opening and closing of the door. This may cause the two hinge axes to bend, deform or even break during the opening and closing of the door.

[0005] Therefore, how to provide a door hinge that can avoid the door opening and closing being affected, the hinge shaft being deformed or even broken due to misalignment of the door hinge is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0006] The purpose of this application is to provide a door hinge and vehicle that can achieve adaptive axis change, avoiding situations where door opening and closing are affected, hinge axis is deformed or even broken due to errors in manufacturing and assembly processes that cause misalignment of the door hinge.

[0007] To solve the above-mentioned technical problems, this application provides a car door hinge, including a car door connecting part and a hinge shaft; the hinge shaft includes a shaft part, a ball head, and a support part arranged circumferentially along the shaft part, the ball head is coaxially disposed at one end of the shaft part, the outer peripheral wall of the ball head has a spherical structure, and the diameter of the ball head is larger than the diameter of the shaft part, the support part has a first spherical surface on the side facing the ball head, the first spherical surface is concentric with the ball head; the car door connecting part has a mounting hole, the ball head is located in the mounting hole, the end of the car door connecting part facing the support part has a second spherical surface, the first spherical surface and the second spherical surface are concentrically fitted.

[0008] If errors occur due to processing or assembly, resulting in misalignment of the two door hinges connected to the same door, in the installed state, there will be a certain angular deviation between the axis of the hinge shaft and the axis of the mounting hole. The axis of the mounting hole in the door connection will not be collinear with the axis of the hinge shaft. In the installed state, the door connection will wobble at a certain angle relative to the hinge shaft. Specifically, the entire door connection will wobble around the center of the ball joint. Simultaneously, the second spherical surface and the first spherical surface will also slide relative to each other. Since the first spherical surface, the second spherical surface, and the ball joint are concentric, the door connection can still rotate relative to the hinge shaft around its axis in the wobble state, ensuring that the normal opening and closing of the door is not affected. The hinge shaft will not bend or deform due to uneven force. Long-term opening and closing of the door will also ensure the structural stability of the door hinge, effectively extending its service life.

[0009] Furthermore, even under yaw conditions, the first spherical surface can still provide stable support for the second spherical surface, thereby ensuring the stability of the door support.

[0010] In other words, the door hinge provided in this application, through the setting of the ball head, the first spherical surface and the second spherical surface, can achieve adaptive change of the axis. Even if errors occur during processing or assembly, causing the door connecting part and the hinge axis to be out of axis in the installed state, the door connecting part can still rotate stably around the axis of the hinge axis relative to the hinge axis. This avoids the situation where the hinge axis deforms or even breaks due to uneven force during the opening and closing of the door due to errors, ensuring the stability of the hinge axis and extending its service life, thereby improving the user experience.

[0011] Optionally, it may also include a bushing disposed within the mounting hole and located between the wall of the mounting hole and the ball head.

[0012] Optionally, the bushing has a flange structure extending outward in the circumferential direction at one end facing the support, and the flange structure is sandwiched between the first spherical surface and the second spherical surface.

[0013] Optionally, it also includes a limiting part, which is disposed in the mounting hole and is used to prevent the ball head from disengaging from the mounting hole.

[0014] Optionally, it also includes a limiting member, wherein the side wall of the door connecting part is provided with a limiting hole communicating with the mounting hole, the limiting member passes through the limiting hole and is fixed to the side wall of the door connecting part, and the end of the limiting member extends into the mounting hole to form the limiting part.

[0015] Optionally, the number of the limiting members is at least three, and each of the limiting members is arranged at circumferential intervals along the mounting hole.

[0016] Optionally, the end face of the limiting member facing the mounting hole is a curved surface structure.

[0017] Optionally, the bushing is also sandwiched between the limiting part and the ball head.

[0018] Optionally, the mounting hole is a blind hole.

[0019] Optionally, the end of the ball head away from the hinge axis has a planar structure.

[0020] This application also provides a vehicle, including a body, a door, and a door hinge as described above. The door hinge further includes a body connecting portion. The door is fixed to the door connecting portion, and the body connecting portion is fixed to the body. The body connecting portion is provided with a fixing hole, and one end of the shaft portion away from the ball head passes through the fixing hole and is fixed to the fixing hole.

[0021] Vehicles equipped with the aforementioned door hinges have similar technical effects to those of the aforementioned door hinges, and will not be described in detail here to save space. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the door hinge provided in the embodiment of this application;

[0023] Figure 2 yes Figure 1 Exploded view;

[0024] Figure 3 It is an axial sectional view of the door connection part with the hinge shaft installed coaxially.

[0025] Figure 4 It is an axial sectional view of the door connection part with the hinge shaft installed in a non-axial installation state.

[0026] Figure 5 It is an axial sectional view of the door connection part in a non-axial installation state where the mounting hole and the hinge shaft are not aligned.

[0027] Attachment Figures 1-5 The reference numerals in the attached figures are explained as follows:

[0028] 1. Door connecting part, 11. Mounting hole, 12. Second spherical surface, 13. Threaded hole, 14. Connecting hole;

[0029] 2. Hinge shaft, 21. Shaft portion, 22. Ball head, 221. Planar structure, 23. Support portion, 231. First spherical surface;

[0030] 3 limit bolts;

[0031] 4. Bushings;

[0032] 5. Flanged structure;

[0033] 6. Limiting part. Detailed Implementation

[0034] To enable those skilled in the art to better understand the technical solutions of this application, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] Door hinges are one of the more critical components in a vehicle's opening and closing system. They primarily connect the door to the vehicle body, allowing the door to rotate relative to the body and thus open and close. In addition, door hinges also provide support for the door.

[0036] The door hinge includes a door connecting part 1, a body connecting part, and a hinge shaft 2. The door connecting part 1 is fixed to the door, the body connecting part is fixed to the body, one end of the hinge shaft 2 is rotatably connected to the door connecting part 1, and the other end of the hinge shaft 2 is also fixed to the body connecting part. Specifically, the body connecting part is provided with a fixing hole, and the hinge shaft 2 passes through the fixing hole and is fixed to the body connecting part.

[0037] There are two door hinges connecting the car door and the car body. These two door hinges are arranged at intervals along the height direction. Theoretically, the hinge axis 2 of the two door hinges should be set coaxially so that the door can open and close smoothly. However, in the actual production process, due to processing, assembly and other reasons, the coaxiality of the hinge axis 2 of the two door hinges may not meet the requirements. If the hinge axis 2 of the two door hinges is not coaxial, the opening and closing force of the door will be affected. At the same time, it will cause the hinge axis 2 to bend and deform during the opening and closing of the door. After long-term use, it may lead to the breakage of the hinge axis 2.

[0038] Therefore, this application provides a door hinge that can avoid problems such as deformation or even damage caused by the misalignment of the hinge axes 2 of the two door hinges.

[0039] Specifically, such as Figures 1-3 As shown, the hinge shaft 2 includes a shaft portion 21, a ball head 22, and a support portion 23. The ball head 22 is located at one end of the shaft portion 21 and is coaxially arranged with the shaft portion 21. The outer peripheral wall of the ball head 22 has a spherical structure, and the diameter of the ball head 22 is larger than the diameter of the shaft portion 21, that is, the ball head 22 protrudes outward in the radial direction relative to the shaft portion 21. The support portion 23 is arranged circumferentially along the outer peripheral wall of the shaft portion 21. The side of the support portion 23 facing the ball head 22 has a first spherical surface 231, which is concentric with the ball head 22. The end of the shaft portion 21 away from the ball head 22 passes through a fixing hole and is fixed to the vehicle body connection portion.

[0040] The door connecting part 1 is provided with a mounting hole 11. The end of the door connecting part 1 facing the support part 23 is provided with a second spherical surface 12. The ball head 22 is installed in the mounting hole 11. The ball head 22, the first spherical surface 231 and the second spherical surface 12 are concentric. The first spherical surface 231 and the second spherical surface 12 can fit together. The support part 23 provides support for the door connecting part 1, thereby providing support for the door and ensuring the stability of the door installation.

[0041] The door hinge also includes a limiting part 6, which is located inside the mounting hole 11. The limiting part 6 can limit the ball head 22, making the position of the ball head 22 within the mounting hole 11 stable. This prevents the ball head 22 from moving along one side of the axial support part 23 of the mounting hole 11, ensuring the installation stability between the hinge shaft 2 and the door connection part 1. This also prevents the door from shaking during opening and closing, thereby improving the vehicle's NVH (Noise, Vibration, Harshness) performance.

[0042] like Figure 3 In the axial cross-sectional view of the door hinge shown, the maximum diameter of the ball head 22 is located at line A, and the connection between the ball head 22 and the shaft 21 is located at line B. The limiting part 6 can limit the ball head 22 in the axial direction of the shaft 21 at the position between line A and line B to ensure that the ball head 22 is stable in the mounting hole 11.

[0043] If the machining and assembly tolerances are all within the error range, and the two door hinges are coaxially positioned in the installed state, such as... Figure 3 As shown, the axis of mounting hole 11 is collinear with the axis of hinge shaft 2.

[0044] If errors occur due to processing or assembly, resulting in the two door hinges connected to the same door being misaligned, then in the installed state, there will be a certain angular deviation between the axis of hinge axis 2 and the axis of mounting hole 11. Figure 4 and Figure 5 As shown, the axis of the mounting hole 11 of the door connecting part 1 is not collinear with the axis of the hinge shaft 2. In the installed state, the door connecting part 1 will wobble at a certain angle relative to the hinge shaft 2. Specifically, the door connecting part 1 as a whole wobbles around the center of the ball head 22. At the same time, the second spherical surface 12 and the first spherical surface 231 also slide relative to each other. Since the first spherical surface 231, the second spherical surface 12 and the ball head 22 are concentric, the door connecting part 1 can still rotate relative to the hinge shaft 2 around the axis of the hinge shaft 2 in the wobble state, so as to ensure that the normal opening and closing of the door is not affected, and the hinge shaft 2 will not bend or deform due to uneven force. Long-term opening and closing of the door can also ensure the structural stability of the door hinge and effectively extend its service life.

[0045] Furthermore, even under swaying conditions, the first spherical surface 231 can still provide stable support for the second spherical surface 12, thereby ensuring the stability of the door support.

[0046] In other words, the door hinge provided in this embodiment, through the setting of ball head 22, first spherical surface 231 and second spherical surface 12, can achieve adaptive change of axis. Even if errors occur during processing or assembly, causing the door connecting part 1 and hinge shaft 2 to be out of axis in the installation state, the door connecting part 1 can still rotate stably around the axis of the hinge shaft 2 relative to the hinge shaft 2. This avoids the situation where the hinge shaft 2 deforms or even breaks due to uneven force during the opening and closing of the door due to errors, ensuring the stability of the hinge shaft 2 and extending its service life, thereby improving the user experience.

[0047] Preferably, such as Figure 2 and Figure 3 As shown, the ball head 22 has a spherical structure only on its outer wall surface along the circumferential direction of the hinge axis 2, and the end of the ball head 22 away from the hinge axis 2 has a planar structure 221. Of course, the end of the ball head 22 away from the hinge axis 2 can also be made into a spherical structure, and no specific restriction is made here. When the end of the ball head 22 away from the hinge axis 2 is made into a planar structure 221, the requirement for the axial length of the mounting hole 11 can be reduced, thereby reducing the overall size and achieving the purpose of miniaturization.

[0048] like Figure 2 and Figure 3 As shown, the door hinge also includes a bushing 4, which is located inside the mounting hole 11 and between the inner wall of the mounting hole 11 and the ball head 22. The bushing 4 is preferably made of copper wire mesh and polytetrafluoroethylene, which has a low coefficient of friction and good wear resistance. The bushing 4 can prevent the ball head 22 and the inner wall of the mounting hole 11 from directly contacting and rotating relative to each other, thereby avoiding direct friction between the two, reducing wear, and effectively extending service life.

[0049] like Figure 2 , Figure 4 and Figure 5 As shown, the bushing 4 has a cylindrical structure. Furthermore, the end of the bushing 4 facing the mounting hole 11, that is, the end facing the support part 23, is also provided with a flange structure 5 extending outward in the circumferential direction. The flange structure 5 is sandwiched between the first spherical surface 231 and the second spherical surface 12. The flange structure 5 can avoid direct contact friction between the first spherical surface 231 and the second spherical surface 12, reduce wear, and thus extend the service life.

[0050] Of course, a wear-resistant layer can also be set separately and laid between the first spherical surface 231 and the second spherical surface 12. Wear resistance is achieved by the flange structure 5 set at the end of the bushing 4, which simplifies the overall structure, simplifies disassembly and assembly operations, and ensures the stability of the overall structure.

[0051] like Figures 1-3 As shown, it also includes a limiting member 3, and the side wall of the door connecting part 1 is also provided with a limiting hole 13. The limiting hole 13 is connected to the mounting hole 11. The limiting member 3 can pass through the limiting hole 13 and be fixed to the side wall of the door connecting part 1. The end of the limiting member 3 extends into the mounting hole 11 and forms the aforementioned limiting part 6. The limiting part 6 is formed by the end of the limiting member 3, which has a simple structure and is convenient for disassembly and assembly.

[0052] Furthermore, the end of the limiting member 3 can abut against the bushing 4, causing the bushing 4 to protrude radially inward to form the aforementioned limiting part 6. In other words, the bushing 4 is also sandwiched between the limiting part 6 and the ball head 22, avoiding direct contact between the limiting part 6 and the hinge shaft 2, reducing friction and wear, and extending service life.

[0053] In this embodiment, the specific structure of the limiting member 3 and the limiting hole 13 is not limited. For example, the limiting member 3 can be set as a limiting bolt and the limiting hole 13 can be set as a threaded hole. During installation, the end of the limiting member 3 can be inserted into the limiting hole 13, and the limiting member 3 can be screwed in so that the end of the limiting member 3 extends into the mounting hole 11. During this process, the end of the limiting member 3 can press against the outer wall of the bushing 4. As the limiting member 3 rotates, the end of the limiting member 3 continues to squeeze the bushing 4, causing the bushing 4 to deform and bulge inward radially to limit the ball head 22.

[0054] Alternatively, the outer peripheral wall of the limiting member 3 and the inner peripheral wall of the limiting hole 13 can be respectively provided with snap-fit ​​structures, such as mutually compatible snap-fit ​​protrusions and snap-fit ​​grooves. After the limiting member 3 passes through the limiting hole 13, it can be snap-fitted and fixed through the snap-fit ​​structure.

[0055] There is no limit to the number of limiting parts 6, such as Figure 2 As shown, there are three limiting members 3, that is, there are three limiting parts 6. Each limiting part 6 is arranged at intervals along the circumference of the mounting hole 11, and the position of each limiting part 6 is at the same position in the length direction of the hinge shaft 2, so as to ensure the limiting stability of each limiting part 6 on the hinge shaft 2.

[0056] Of course, in this embodiment, the number of limiting parts 6 can be four or more to ensure limiting stability. The surface of the end of the limiting member 3 facing the mounting hole 11 is a curved structure, that is, the end surface of the limiting member 3 is smooth, avoiding the presence of sharp corners at the end of the limiting member 3, thereby avoiding damage to the bushing 4 during installation.

[0057] Of course, in this embodiment, the specific structure of the limiting part 6 is not limited. For example, after the bushing 4 and the hinge shaft 2 are assembled, the limiting part 6 is provided on the outside of the bushing 4, so that the bushing 4 protrudes radially inward to form a convex part, and a concave part corresponding to the convex part is formed on the outside of the bushing 4. The limiting part 6 is at least partially located in the concave part to ensure the shape of the concave and convex parts, thereby ensuring the limiting stability of the hinge shaft 2. In this case, the limiting part 6 can be a plurality of convex blocks arranged circumferentially along the bushing 4, or it can be a ring-shaped part arranged circumferentially along the bushing 4. The limiting part 6, the bushing 4 and the hinge shaft 2 are integrally formed into an assembly, and then the assembly is installed as a whole with the door connection part 1. In the installed state, the limiting part 6 can abut against the inner wall of the mounting hole 11 to ensure the shape stability of the concave and convex parts, thereby ensuring the stability of the limiting effect.

[0058] By setting a limiting member 3 and a limiting hole 13 in the door connecting part 1, the limiting part 6 is formed at the end of the limiting member 3, which simplifies the assembly operation.

[0059] like Figures 3-5 As shown, the mounting hole 11 is a blind hole. Of course, the mounting hole 11 can also be set as a through hole that passes through the door connecting part 1. When the mounting hole 11 is set as a blind hole, there is no need to set up a sealing structure, which can prevent external paint and other substances from entering the mounting hole 11, thereby simplifying the overall structure and simplifying the installation operation.

[0060] The first spherical surface 231 and the second spherical surface 12 slide together to ensure the sealing at this point and prevent external paint and other substances from entering the mounting hole 11. This eliminates the need for additional sealing components and simplifies the overall structure.

[0061] This application also provides a vehicle, which includes a body, doors, and door hinges as described above. Figure 1 and Figure 2 As shown, the door connecting part 1 of the door hinge is also provided with a connecting hole 14. The door connecting part 1 is connected and fixed to the door by connecting bolts. Similarly, the body connecting part can also be provided with corresponding connecting holes and connected and fixed to the body by connecting bolts. Specifically, the technical effect of this vehicle is similar to that of the door hinge described above, and will not be elaborated further here for the sake of brevity.

[0062] In the description of this application, it should be understood that the terms "length", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0063] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0064] The above are merely preferred embodiments of this application. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A car door hinge, characterized in that, Includes door connecting part (1) and hinge shaft (2); The hinge shaft (2) includes a shaft portion (21), a ball head (22), and a support portion (23) arranged circumferentially along the shaft portion (21). The ball head (22) is coaxially disposed at one end of the shaft portion (21). The outer peripheral wall of the ball head (22) has a spherical structure, and the diameter of the ball head (22) is larger than the diameter of the shaft portion (21). The support portion (23) has a first spherical surface (231) on the side facing the ball head (22), and the first spherical surface (231) is concentric with the ball head (22). The door connecting part (1) is provided with a mounting hole (11), the ball head (22) is located in the mounting hole (11), and the door connecting part (1) is provided with a second spherical surface (12) at one end facing the support part (23). The first spherical surface (231) and the second spherical surface (12) are concentrically fitted.

2. The door hinge according to claim 1, characterized in that, It also includes a bushing (4), which is disposed in the mounting hole (11) and located between the hole wall of the mounting hole (11) and the ball head (22).

3. The door hinge according to claim 2, characterized in that, The bushing (4) extends outward along the circumferential direction at one end facing the support (23) and is provided with a flange structure (5), which is sandwiched between the first spherical surface (231) and the second spherical surface (12).

4. The door hinge according to claim 2 or 3, characterized in that, It also includes a limiting part (6), which is disposed in the mounting hole (11) and is used to restrict the ball head (22) from disengaging from the mounting hole (11).

5. The door hinge according to claim 4, characterized in that, It also includes a limiting member (3), and the side wall of the door connecting part (1) is also provided with a limiting hole (13) communicating with the mounting hole (11). The limiting member (3) passes through the limiting hole (13) and is fixed to the side wall of the door connecting part (1). The end of the limiting member (3) extends into the mounting hole (11) and forms the limiting part (6).

6. The door hinge according to claim 5, characterized in that, The number of the limiting members (3) is at least three, and each of the limiting members (3) is arranged at circumferential intervals along the mounting hole (11).

7. The door hinge according to claim 6, characterized in that, The end face of the limiting member (3) facing the mounting hole (11) is a curved surface structure.

8. The door hinge according to claim 6, characterized in that, The bushing (4) is also sandwiched between the limiting part (6) and the ball head (22).

9. The door hinge according to any one of claims 1-3, characterized in that, The mounting hole (11) is a blind hole.

10. The door hinge according to any one of claims 1-3, characterized in that, The end of the ball head (22) away from the hinge axis (2) is a planar structure (221).

11. A vehicle, characterized in that, The vehicle includes a vehicle body, a door, and a door hinge as described in any one of claims 1-10. The door hinge further includes a vehicle body connection portion. The door is fixed to the door connection portion (1), the vehicle body connection portion is fixed to the vehicle body, the vehicle body connection portion is provided with a fixing hole, and one end of the shaft portion (21) away from the ball head (22) passes through the fixing hole and is fixed to the fixing hole.

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