A vehicle door hinge and vehicle

Abstract

The application relates to the technical field of automobile parts, and particularly provides a vehicle door hinge and a vehicle, the vehicle door hinge comprising a hinge body page and a hinge pin shaft, the hinge body page is provided with a first pin shaft hole, the hinge pin shaft comprises a body matching section, the body matching section is arranged in the first pin shaft hole, the body matching section comprises an axially connected concave section and a first convex section, the first convex section is located at the front end of the concave section, the first convex section is tightly matched with the inner wall of the first pin shaft hole, the axial length of the first convex section is L1, the diameter of the first convex section is D1, and the ratio of D1 and L1 is 1.5+ / -0.2. The axial length and the diameter of the first convex section have the ratio range, the relationship between the diameter and the axial length of the first convex section is balanced in the geometric shape, the first convex section forms a short and thick columnar structure, the contact area and the interference fit friction force between the first convex section and the first pin shaft hole are increased, and the Z-direction pull-off force of the hinge can meet the side collision requirement.

Description

Technical Field

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

[0002] In the side impact test of the door hinge, the Z-direction pull-out force of the hinge was only 15.92KN, which made the hinge risk of detaching from the door relatively high, affecting the door's collision performance and potentially causing safety issues in consumer market feedback. Utility Model Content

[0003] The purpose of this application is to provide a door hinge and a vehicle that improves the Z-axis pull-out force of the hinge, reduces the risk of the hinge detaching from the door, optimizes the door's collision performance, and minimizes safety issues.

[0004] To solve the above-mentioned technical problems, this application provides a door hinge, including a hinge body leaf and a hinge pin, wherein:

[0005] The hinge body panel has a first pin hole. The hinge pin includes a body fitting section that passes through the interior of the first pin hole. The body fitting section includes an axially connected concave section and a first convex section. The first convex section is located at the front end of the concave section. The first convex section is fastened to the inner wall of the first pin hole. The axial length of the first convex section is L1, and the diameter of the first convex section is D1. The ratio of D1 to L1 ranges from 1.5 ± 0.2.

[0006] In the door hinge of this application, the concave section is used to cooperate with fasteners to fix the hinge body panel and the hinge pin. The first convex section is located at the front end of the concave section and is tightly fitted with the inner wall of the first pin hole. The ratio of the diameter to the axial length of the first convex section has the above-mentioned range, which balances the relationship between the diameter and the axial length of the first convex section in terms of geometry. The first convex section forms a short and thick columnar structure, which increases the contact area between the first convex section and the first pin hole and the interference fit friction, improves the Z-direction pull-out force of the hinge pin, increases the anti-detachment force between the hinge pin and the hinge body panel, reduces the risk of hinge detachment and door detachment, optimizes door collision performance, and avoids safety problems as much as possible.

[0007] Optionally, the value of L1 is 7mm-9mm.

[0008] Optionally, the value of L1 is 8mm and the value of D1 is 11mm.

[0009] Optionally, the hinge body panel has a fastening hole that communicates with the first pin hole. The axis of the fastening hole and the axis of the first pin hole form an angle. The door hinge also includes a fastener that partially passes through the fastening hole and abuts against the peripheral wall of the recess.

[0010] Optionally, the door hinge further includes a hinge door leaf, the hinge door leaf including a hinge door leaf body and a bushing, the hinge door leaf body having a mounting hole, the bushing being at least partially installed inside the mounting hole, the bushing forming a second pin hole, the hinge pin further including a door mating section, the door mating section being rotatably disposed inside the second pin hole.

[0011] Optionally, the bushing includes a shaft segment with folded portions at both ends that fold outward in a radial direction. The shaft segment is installed inside the mounting hole, and the folded portions abut against the corresponding end walls of the hinge door leaf body.

[0012] Optionally, the hinge pin has a recessed section that is recessed radially inward, and the door hinge further includes a washer that fits into the recessed section and abuts against the end wall of the hinge door leaf facing away from the hinge body leaf.

[0013] Optionally, the hinge pin includes a protruding section with a diameter larger than the diameters of the first pin hole and the second pin hole, and the protruding section is clamped between the opposite end walls of the hinge body panel and the hinge door panel.

[0014] Optionally, the hinge pin further includes a guide section located at the front end of the first convex section, the diameter of which gradually decreases in a direction away from the first convex section.

[0015] This application also provides a vehicle including the aforementioned door hinge.

[0016] The vehicle in this application includes the aforementioned door hinge, and therefore has the same technical effect as the aforementioned door hinge, which will not be repeated here. Attached Figure Description

[0017] Figure 1 A partial axial cross-sectional view of a specific embodiment of the door hinge provided in this application;

[0018] Figure 2 for Figure 1 A schematic diagram of the structure of the door hinge and the hinge pin in a car door hinge;

[0019] Figure 3 for Figure 2 Schematic diagram of the structure of the central hinge pin;

[0020] Figure 4 for Figure 1 Anti-detachment performance curve of car door hinges;

[0021] in, Figures 1-3 The accompanying figure labels are as follows:

[0022] 1-Hinge body panel;

[0023] 2-Hinge pin; 21-Concave section; 22-First convex section; 23-Door mating section; 24-Guide section; 25-Concave section; 26-Protruding section; 27-Second convex section;

[0024] 3-Fasteners;

[0025] 4-Hinge door leaf; 41-Hinge door leaf body; 42-Bushing; 421-Shaft segment; 422-Folding part; 4a-First connecting hole;

[0026] 5-Gasket. Detailed Implementation

[0027] 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.

[0028] by Figure 1 Taking the perspective of [the specific example], during the assembly process of the hinge pin 2 and the first pin hole, the end that first passes through the first pin hole is the front end of the hinge pin 2, and the end that passes through the first pin hole later is the rear end of the hinge pin 2.

[0029] Please refer to Figures 1-4 , Figure 1 A partial axial cross-sectional view of a specific embodiment of the door hinge provided in this application;

[0030] Figure 2 for Figure 1 A schematic diagram of the structure of the door hinge and the hinge pin in a car door hinge; Figure 3 for Figure 2 Schematic diagram of the structure of the central hinge pin; Figure 4 for Figure 1 Anti-detachment performance curve of car door hinges.

[0031] This embodiment provides a vehicle door hinge, including a hinge body panel 1 and a hinge pin 2, wherein:

[0032] The hinge body panel 1 has a first pin hole. The hinge pin 2 includes a body fitting section, which passes through the inside of the first pin hole. The body fitting section includes an axially connected concave section 21 and a first convex section 22. The first convex section 22 is located at the front end of the concave section 21. The first convex section 22 is fastened to the inner wall of the first pin hole. The axial length of the first convex section 22 is L1, and the diameter of the first convex section 22 is D1. The ratio of D1 to L1 ranges from 1.5 ± 0.2.

[0033] In this embodiment of the door hinge, the concave section 21 is used to cooperate with the fastener 3 to fix the hinge body panel 1 and the hinge pin 3. The first convex section 22 is located at the front end of the concave section 21 and is tightly fitted with the inner wall of the first pin hole. The ratio of the diameter to the axial length of the first convex section 22 has the above-mentioned range, which balances the relationship between the diameter and axial length of the first convex section 22 in terms of geometry. The first convex section 22 forms a short and thick columnar structure, which increases the contact area and interference fit friction between the first convex section 22 and the first pin hole, improves the Z-direction pull-out force of the hinge pin 2, increases the anti-detachment force between the hinge pin 2 and the hinge body panel 1, reduces the risk of the hinge coming off and the door falling off, optimizes the door collision performance, and avoids safety problems as much as possible.

[0034] The value of L1 ranges from 7mm to 9mm, and the ratio of D1 to L1 ranges from 1.5 ± 0.2, meaning the value of D1 ranges from 9.1mm to 15.3mm. Verification shows that when L1 < 7mm and D1 < 9.1mm, the hinge's Z-axis pull-out force cannot meet the side impact requirements, and there is still a risk of the hinge detaching and the door falling off. Conversely, when L1 > 9mm and D1 > 15.3mm, it creates structural redundancy while ensuring the hinge's anti-detachment performance, leading to increased weight and cost of the hinge and poor economic efficiency. Therefore, the axial length and diameter of the first convex segment 22 have the above-mentioned ranges, which ensures that the hinge's Z-axis pull-out force meets the side impact requirements, reduces the risk of hinge detachment and door falling off, optimizes door collision performance, and minimizes safety issues, while also avoiding structural redundancy, reducing the weight and cost of the door hinge, and improving economic efficiency.

[0035] Specifically, L1 can be 7mm, 7.5mm, 8mm, 8.5mm, 9mm, etc., and D1 can be 9.1mm, 10.5mm, 12mm, 13.6mm, 15.3mm. When L1 is 7mm and D1 is 9.1mm, the weight and cost of the door hinge are minimized while ensuring its anti-detachment performance, resulting in the best economy. When H1 is 9mm and D1 is 15.3mm, the anti-detachment performance of the door hinge is optimized while ensuring its economy, minimizing the possibility of the hinge coming off and the door falling off. When L1 is 7.5mm, 8mm, or 8.5mm, and D1 is 10.5mm, 12mm, or 13.6mm, a balance can be achieved between the anti-detachment performance and economy of the door hinge, improving the overall performance of the door hinge.

[0036] In some embodiments of this application, L1 is 8mm and D1 is 11mm, combined with Figure 4 It is understood that when the axial length and diameter of the first protrusion 22 have these values, the Z-direction pull-out force of the door hinge in this embodiment is increased to more than 25KN, which meets the requirements of the new side impact regulations.

[0037] In this embodiment, the material of the hinge pin 2 is ML20MnTiB.

[0038] Among them, ML20MnTiB, also known as cold heading steel, has the advantages of good comprehensive mechanical properties and high structural strength. Using this material for hinge pin 2 can improve its structural strength, reduce the possibility of hinge pin 2 breaking, and further improve the structural reliability of the door hinge.

[0039] like Figure 2 As shown, in this embodiment, the body fitting section also includes a second convex section 27. The first convex section 22 and the second convex section 27 are connected to the two ends of the concave section 21. The second convex section 27 is fastened to the inner wall of the first pin hole. Thus, the opposite end walls of the first convex section 22 and the second convex section 27 form a limiting wall. The inner end of the fastener 3 is located between the two limiting walls, thereby achieving axial limiting of the hinge pin 2.

[0040] Please continue to refer to this. Figure 1 In this embodiment, the hinge body panel 1 has a fastening hole, which is connected to the first pin hole. The axis of the fastening hole and the axis of the first pin hole have an included angle. The door hinge also includes a fastener 3, which is partially inserted inside the fastening hole and abuts against the peripheral wall of the recess 21.

[0041] As set above, the hinge body page 1 has a fastening hole to accommodate the fastener 3. The fastening hole is connected to the first pin hole, so that the inner end of the fastener 3 can enter the first pin hole and press against the recess 21. There is an angle between the axis of the fastening hole and the axis of the first pin hole. Specifically, in this embodiment, the axis of the fastening hole and the axis of the first pin hole are perpendicular to each other. The clamping force of the fastener 3 can act radially on the hinge pin 2, so as to reliably fix the hinge pin 2 and the fastener 3.

[0042] It is understandable that due to machining errors, the axis of the fastening hole and the axis of the first pin hole are not necessarily completely perpendicular in practice. It is also acceptable for the included angle between the axis of the fastening hole and the axis of the first pin hole to be slightly greater than or slightly less than 90°, as long as the hinge pin 2 and the fastener 3 can be reliably fixed.

[0043] In this embodiment, the fastener 3 is inserted into the fastening hole. Specifically, the outer wall of the fastener 3 is provided with an external thread, and the inner wall of the fastening hole is provided with a matching internal thread. The fastener 3 and the fastening hole are screwed together to ensure that the position of the fastener 3 inside the fastening hole is reliable, and that the fastener 3 can continuously and stably apply a clamping force to the hinge pin 2, thus ensuring the reliable fixation of the hinge pin 2 and the fastener 3.

[0044] Furthermore, in this embodiment, the door hinge also includes a hinge door leaf 4, which includes a hinge door leaf body 41 and a bushing 42. The hinge door leaf body 41 has a mounting hole, and the bushing 42 is at least partially installed inside the mounting hole. A second pin hole is formed inside the bushing 42. The hinge pin 2 also includes a door mating section 23, which is rotatably disposed inside the second pin hole.

[0045] In this embodiment, the door mating section 23 is rotatably inserted inside the second pin hole. Specifically, the door mating section 23 and the second pin hole are axially mutually restrained to prevent the hinge pin 2 from dislodging from the second pin hole. Simultaneously, the door mating section 23 can rotate within the second pin hole, allowing the door to rotate relative to the vehicle body, thus opening or closing the door. In this embodiment, the bushing 42 is at least partially installed inside the mounting hole, and the interior of the bushing 42 forms the second pin hole. The bushing 42 reduces wear on the hinge pin 2, minimizing abnormal door wobbling after prolonged use and ensuring the door's positional accuracy.

[0046] like Figure 1As shown, in this embodiment, the bushing 42 has a shaft segment 421, and both ends of the shaft segment 421 have folded portions 422 that fold outward in a radial direction. The shaft segment 421 is installed inside the mounting hole of the hinge door body 41. The folded portions 422 abut against the corresponding end walls of the hinge door body 41 to achieve axial positioning of the bushing 42 and the hinge door body 41, ensuring the reliability of the connection between the bushing 42 and the hinge door body 41.

[0047] Furthermore, in this embodiment, the hinge pin 2 has a recessed section 25 that is recessed radially inward, and the door hinge also includes a washer 5, which is fitted into the recessed section 25. The washer 5 abuts against the end wall of the hinge door page 4 facing away from the hinge body page 1.

[0048] The recessed section 25 can achieve axial limiting connection between the gasket 5 and the hinge pin 2, ensuring reliable connection between the gasket 5 and the hinge pin 2. The gasket 5 abuts against the end wall of the hinge door page 4 facing away from the hinge body page 1. The gasket 5 can also limit the hinge body page 1 and prevent the hinge door page 4 from coming off from the rear end of the hinge pin 2.

[0049] Depend on Figure 1 As can be seen, in this embodiment, the gasket 5 actually abuts against the folded portion at the corresponding end of the bushing 42, thereby the bushing 42 can also reduce the wear of the gasket 5.

[0050] In addition, such as Figure 1 As shown, in this embodiment, the hinge pin 2 includes a protruding section 26, the diameter of which is larger than the diameter of the first pin hole and the second pin hole. The protruding section 26 is clamped between the opposite end walls of the hinge body page 1 and the hinge door page 4.

[0051] Thus, the protruding section 26 and the shim 5 work together to achieve the axial limiting connection between the hinge pin 2 and the hinge body page 1, ensuring the reliable connection between the hinge pin 2 and the hinge body page 1.

[0052] Please continue to refer to this. Figure 2 In this embodiment, the hinge pin 2 includes a guide section 24, which is located at the front end of the first convex section 22, and the diameter of the guide section 24 gradually decreases in the direction away from the first convex section 22.

[0053] As set up above, the guide section 24 can play a guiding role, making it easier for the hinge pin 2 to enter the interior of the first pin hole during assembly, thereby improving the assembly efficiency of the door hinge.

[0054] This embodiment also provides a vehicle including the aforementioned door hinge.

[0055] The vehicle described herein includes the aforementioned door hinges, and therefore has the same technical effect as the aforementioned door hinges, which will not be repeated here.

[0056] The vehicle includes a body and doors. The door hinge body page 1 is connected to the body, and the door hinge door page 4 is connected to the door, thereby realizing the hinge connection between the body and the door.

[0057] In this embodiment, the hinged door leaf 4 and the door are fixedly connected by a connector, specifically, as shown below. Figure 3 As shown, the hinged door panel 4 has a first connecting hole 4a, and the door is provided with a second connecting hole. The connector passes through the second connecting hole provided in the door and the first connecting hole 4a provided in the hinged door panel 4 in sequence to realize the connection between the door and the hinged door panel 4.

[0058] Of course, in practice, the hinged door panel 4 and the door are not limited to the above connection methods. In other embodiments of this application, the hinged door panel 4 and the door are fixed by welding, and the connection is reliable.

[0059] Similarly, the hinge body panel 1 and the body can also be fixedly connected by a connector. For example, the hinge body panel 1 has a third connecting hole, and the body has a corresponding fourth connecting hole. The connector passes through the fourth connecting hole in the body and the third connecting hole in the hinge body panel 1 in sequence to achieve the connection between the hinge body panel 1 and the body.

[0060] In some other embodiments of this application, the hinged body panel 1 and the body can also be fixed by welding.

[0061] In the description of this application, it should be understood that the terms "length", "front", "rear", "inner", "outer", "axial", "radial", 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.

[0062] 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.

[0063] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0064] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0065] 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 vehicle door hinge, characterized in that, Includes a hinge body panel (1) and a hinge pin (2), wherein: The hinge body panel (1) has a first pin hole. The hinge pin (2) includes a body fitting section, which passes through the inside of the first pin hole. The body fitting section includes an axially connected concave section (21) and a first convex section (22). The first convex section (22) is located at the front end of the concave section (21). The first convex section (22) is fastened to the inner wall of the first pin hole. The axial length of the first convex section (22) is L1, and the diameter of the first convex section (22) is D1. The ratio of D1 to L1 is in the range of 1.5 ± 0.

2.

2. The door hinge according to claim 1, characterized in that, The value range of L1 is 7mm-9mm.

3. The door hinge according to claim 1 or 2, characterized in that, The value of L1 is 8mm, and the value of D1 is 11mm.

4. The door hinge according to any one of claims 1-2, characterized in that, The hinge body panel (1) has a fastening hole that is connected to the first pin hole. The axis of the fastening hole and the axis of the first pin hole have an angle. The door hinge also includes a fastener (3). The fastener (3) is partially inserted inside the fastening hole and abuts against the peripheral wall of the recess (21).

5. The door hinge according to claim 3, characterized in that, The hinge body panel (1) has a fastening hole that is connected to the first pin hole. The axis of the fastening hole and the axis of the first pin hole have an angle. The door hinge also includes a fastener (3). The fastener (3) is partially inserted inside the fastening hole and abuts against the peripheral wall of the recess (21).

6. The door hinge according to any one of claims 1-2, characterized in that, The door hinge also includes a hinge door leaf (4), which includes a hinge door leaf body (41) and a bushing (42). The hinge door leaf body (41) has a mounting hole, and the bushing (42) is at least partially installed inside the mounting hole. A second pin hole is formed inside the bushing (42). The hinge pin (2) also includes a door mating section (23), which is rotatably inserted inside the second pin hole.

7. The door hinge according to claim 3, characterized in that, The door hinge also includes a hinge door leaf (4), which includes a hinge door leaf body (41) and a bushing (42). The hinge door leaf body (41) has a mounting hole, and the bushing (42) is at least partially installed inside the mounting hole. A second pin hole is formed inside the bushing (42). The hinge pin (2) also includes a door mating section (23), which is rotatably inserted inside the second pin hole.

8. The door hinge according to claim 4, characterized in that, The door hinge also includes a hinge door leaf (4), which includes a hinge door leaf body (41) and a bushing (42). The hinge door leaf body (41) has a mounting hole, and the bushing (42) is at least partially installed inside the mounting hole. A second pin hole is formed inside the bushing (42). The hinge pin (2) also includes a door mating section (23), which is rotatably inserted inside the second pin hole.

9. The door hinge according to claim 6, characterized in that, The bushing (42) includes a shaft segment (421) with folded portions (422) at both ends that fold outward in a radial direction. The shaft segment (421) is installed inside the mounting hole, and the folded portions (422) abut against the corresponding end walls of the hinge door body (41).

10. The door hinge according to claim 6, characterized in that, The hinge pin (2) has a recessed section (25) that is recessed inward along the radial direction. The door hinge also includes a gasket (5), which is fitted onto the recessed section (25). The gasket (5) abuts against the end wall of the hinge door leaf (4) facing away from the hinge body leaf (1).

11. The door hinge according to claim 6, characterized in that, The hinge pin (2) includes a protruding section (26) with a diameter greater than that of the first pin hole and the second pin hole. The protruding section (26) is clamped between the opposite end walls of the hinge body panel (1) and the hinge door panel (4).

12. The door hinge according to claim 1, 2, 5, 7, 8, 9, 10 or 11, characterized in that, The hinge pin (2) further includes a guide section (24), which is located at the front end of the first convex section (22), and the diameter of the guide section (24) gradually decreases in the direction away from the first convex section (22).

13. The door hinge according to claim 3, characterized in that, The hinge pin (2) further includes a guide section (24), which is located at the front end of the first convex section (22), and the diameter of the guide section (24) gradually decreases in the direction away from the first convex section (22).

14. The door hinge according to claim 4, characterized in that, The hinge pin (2) further includes a guide section (24), which is located at the front end of the first convex section (22), and the diameter of the guide section (24) gradually decreases in the direction away from the first convex section (22).

15. The door hinge according to claim 6, characterized in that, The hinge pin (2) further includes a guide section (24), which is located at the front end of the first convex section (22), and the diameter of the guide section (24) gradually decreases in the direction away from the first convex section (22).

16. A vehicle, characterized in that, Includes the door hinge as described in any one of claims 1-15.

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