Vehicle door hinge and vehicle
By arranging the plastic-coated limiter on the limit matching surface of the door hinge, the problem of paint film damage during the stamping process of the existing door hinge is solved, achieving a higher service life and better lightweight and safety. balance.
Patent Information
- Application Number
- CN202421050118.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-13
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-05-13
AI Technical Summary
When making the existing door hinges in stamping process, the stamping edges are used to collide with the forged or cast hinges, which cannot guarantee the integrity of the hinge paint film, resulting in rust problems and affecting the appearance and service life.
The forged first connecting piece and the stamped second connecting piece are used, and the limiting piece is set on the limiting matching surface. The plastic coating layer of the limiting piece is used for limiting protection when the limit is collided, so as to avoid hinge paint film. damaged.
It effectively reduces the rigid impact during collision limit, avoids damage to the hinge paint film, increases the service life of the hinge, and finds a balance between lightweight and safety.
Smart Images
Figure CN222376254U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of vehicle parts, and in particular to a door hinge and a vehicle. Background Art
[0002] As people's quality of life improves, higher requirements are placed on the comfort of cars, and the selection of auto parts requires more consideration between car lightweight and car safety. As the hinge connecting the door to the body, the door hinge plays a key role in the comfort of opening and closing the door. Currently, the common door hinges on the market are divided into two types: cast hinges and stamped hinges. Based on the difference in forging and stamping processes, the thickness, weight and mechanical properties of the two types of hinges are different. Generally speaking, cast hinges are much thicker than stamped hinges.
[0003] Therefore, the prior art proposes to use a combination of forging and stamping to make door hinges in order to find a balance between vehicle lightweight and vehicle safety. However, when both the conventional female hinge and male hinge are forged or cast, the matching surface can be machined to limit the maximum opening. However, when one of the hinges is made by stamping, if the stamping edge is directly used to collide with the other hinge to limit the position, the integrity of the hinge paint film cannot be guaranteed, resulting in rust after use, affecting the appearance and service life of the hinge. Utility Model Content
[0004] In view of the above problems, an embodiment of the present application provides a door hinge and a vehicle, which can provide position limiting protection for the hinge at the limit matching surface of the hinge to avoid damage to the hinge paint film.
[0005] According to one aspect of an embodiment of the present application, a vehicle door hinge is provided, comprising: a first connecting member, which is formed by forging; a second connecting member, which is formed by stamping, and the second connecting member is hinged to the first connecting member; and a limiting member, which has a first end and a second end arranged opposite to each other, the first end is provided with a plastic coating layer, and the second end is detachably fixed to the first connecting member or the second connecting member; wherein, when the second end is fixed to the first connecting member, the second connecting member is limited in position when it is rotated to contact with the first end; and when the second end is fixed to the second connecting member, the first connecting member is limited in position when it is rotated to contact with the first end.
[0006] In an exemplary embodiment of the present application, the second end includes at least one plug, and the first connecting member or the second connecting member is provided with a socket corresponding to the plug, and the plug can be axially movably inserted in the socket.
[0007] In an exemplary embodiment of the present application, the pin is connected to the socket by interference fit.
[0008] In an exemplary embodiment of the present application, a plurality of annular protrusions are provided on the surface of the plug, and the annular protrusions are arranged around the circumference of the plug and spaced apart in the axial direction of the plug, wherein the outer diameter of the annular protrusions is slightly larger than the aperture of the hole.
[0009] In an exemplary embodiment of the present application, the latch further defines a hollow cavity, and the hollow cavity is arranged along the axial direction of the latch.
[0010] In an exemplary embodiment of the present application, the radial cross-sectional shape of the insertion hole is elliptical or approximately elliptical.
[0011] In an exemplary embodiment of the present application, the second end is a threaded column, the first connecting member or the second connecting member is provided with a threaded hole corresponding to the threaded column, and the threaded column is threadedly matched with the threaded hole.
[0012] In an exemplary embodiment of the present application, the threaded surface of the threaded column or the threaded hole is coated with thread fastening glue.
[0013] In an exemplary embodiment of the present application, the first connecting member has a first limiting surface, the second connecting member has a second limiting surface arranged corresponding to the first limiting surface, and the second end is detachably fixed to the first limiting surface or the second limiting surface; wherein, when the second end is fixed to the first limiting surface, the second connecting member is limited when it rotates until the second limiting surface contacts the first end; when the second end is fixed to the second limiting surface, the first connecting member is limited when it rotates until the first limiting surface contacts the first end.
[0014] According to a second aspect of an embodiment of the present application, a vehicle is provided, comprising a vehicle body, a door and any of the above-mentioned door hinges, wherein a first connecting member is connected to the vehicle body, a second connecting member is connected to the door, and a limiting member is arranged on the first connecting member.
[0015] The present application manufactures hinge accessories through different forming processes, which can effectively reduce production costs and vehicle weight, and balance the lightweight and safety requirements of the vehicle; and sets limiters between the hinges, and uses the plastic coating of the limiters to provide limit protection when the hinges are limited by collision, thereby reducing the rigid impact during collision limitation, thereby avoiding damage to the hinge paint film, and helping to increase the service life of the hinge.
[0016] The above description is only an overview of the technical solution of the embodiment of the present application. In order to more clearly understand the technical means of the embodiment of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the embodiment of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.
[0018] Figure 1 A schematic structural diagram of a vehicle door hinge according to the first embodiment of the present application is shown;
[0019] Figure 2 A schematic diagram showing the maximum opening angle of the door hinge according to the first embodiment of the present application is shown;
[0020] Figure 3 A cross-sectional view of a vehicle door hinge according to the first embodiment of the present application is shown;
[0021] Figure 4 An exploded view of the door hinge according to the first embodiment of the present application is shown;
[0022] Figure 5 A schematic diagram of the structure of the position limiting member described in the first embodiment of the present application is shown;
[0023] Figure 6 A schematic structural diagram of a vehicle door hinge according to a second embodiment of the present application is shown;
[0024] Figure 7 A schematic structural diagram of the position limiting member described in the second embodiment of the present application is shown.
[0025] Description of Figure Numbers:
[0026] 1-first connecting member, 11-first limiting surface, 111-insertion hole, 12-hinge seat,
[0027] 2-second connecting member, 21-second limiting surface, 22-articulated arm,
[0028] 3-limiting member, 31-first end, 311-plastic coating layer, 32-second end, 321-pin, 3211-annular protrusion, 3212-hollow cavity, 322-threaded column,
[0029] 4-shaft, 5-bushing.
[0030] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION
[0031] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this application will be more comprehensive and complete and fully convey the concept of the example embodiments to those skilled in the art.
[0032] In addition, described feature, structure or characteristic can be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present application. However, those skilled in the art will appreciate that the technical scheme of the present application can be put into practice without one or more of the specific details, or other methods, components, devices, steps, etc. can be adopted. In other cases, known methods, devices, realizations or operations are not shown or described in detail to avoid blurring the various aspects of the application.
[0033] The present application is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the technical features involved in the various embodiments of the present application described below can be combined with each other as long as they do not conflict with each other. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be understood as limiting the present application.
[0034] like Figures 1 to 3As shown, this embodiment provides a door hinge, including a first connecting member 1, a second connecting member 2 and a stopper 3, wherein the first connecting member 1 is formed by forging; the second connecting member 2 is formed by stamping, and the second connecting member 2 and the first connecting member 1 are hinged to each other; the stopper 3 has a first end 31 and a second end 32 arranged opposite to each other, the first end 31 is provided with a plastic coating layer 311, and the plastic coating layer 311 can be made of nylon materials such as PA6 or PVC type materials to ensure its hardness and toughness; the second end 32 can be detachably fixed to the first connecting member 1 or the second connecting member 2: when the second end 32 of the stopper 3 is fixed to the first connecting member 1, the first The connecting member 1 rotates around the hinge until the first end 31 of the limiting member 3 contacts the second connecting member 2, or the second connecting member 2 rotates around the hinge until the second connecting member 2 contacts the first end 31 of the limiting member 3, so that the relative rotation between the first connecting member 1 and the second connecting member 2 stops, that is, the rotation limit is achieved; similarly, when the second end 32 of the limiting member 3 is fixed to the second connecting member 2, the first connecting member 1 rotates around the hinge until it contacts the first end 31 of the limiting member 3, or the second connecting member 2 rotates around the hinge until the first end 31 of the limiting member 3 contacts the first connecting member 1, so that the relative rotation between the first connecting member 1 and the second connecting member 2 stops, that is, the rotation limit is achieved. In this way, by arranging the limiting member 3 between the hinges formed by different processes, and using the plastic coating 311 of the limiting member 3 to provide limiting protection when the hinge is limited by collision, the rigid impact during the collision limit can be effectively reduced, thereby avoiding damage to the hinge paint film, which is beneficial to improving the service life of the hinge.
[0035] For example, Figures 1 to 4 As shown, in this embodiment, the first connecting member 1 and the second connecting member 2 are hingedly connected through the rotating shaft 4 and the bushing 5, wherein a hinge seat 12 is arranged on one side of the first connecting member 1, and two hinge arms 22 are arranged corresponding to the hinge seat 12 of the second connecting member 2. After the bushing 5 is installed on the hinge arm 22, the two hinge arms 22 are placed on both sides of the hinge seat 12 respectively, and the rotating shaft 4 passes through the hinge arm 22 and the bushing 5 and is riveted to the hinge seat 12, so as to realize the hinge connection between the first connecting member 1 and the second connecting member 2. At this time, the first connecting member 1 and the second connecting member 2 can rotate relative to each other around the rotating shaft 4. In this embodiment, the second end 32 of the limiting member 3 is fixedly connected to the first connecting member 1, and the first end 31 thereof is correspondingly located on the rotation movement route of the second connecting member 2. When the second connecting member 2 is rotated to contact the first end 31 of the limiting member 3, the rotation limit of the second connecting member 2 is realized. In this way, the plastic coating layer 311 of the first end 31 can effectively reduce the rigid impact of the second connecting member 2 when it collides and limits, thereby avoiding damage to the hinge paint film.
[0036] It can be understood that the above-mentioned plastic coating layer 311 serves as a buffer configuration of the limiter 3. It can be set at the end of the first end 31, or it can be coated on the entire structure of the limiter 3 including the second end 32, or the limiter 3 can be directly made of nylon materials such as PA6 or PVC type materials.
[0037] Furthermore, if Figures 1 to 4 As shown, the first connecting member 1 has a first limiting surface 11, the second connecting member 2 has a second limiting surface 21 arranged corresponding to the first limiting surface 11, and the second end 32 of the limiting member 3 is detachably fixed to the first limiting surface 11 or the second limiting surface 21: when the second end 32 of the limiting member 3 is fixed to the first limiting surface 11, the first connecting member 1 rotates around the hinge until the first end 31 of the limiting member 3 contacts the second limiting surface 21, or the second connecting member 2 rotates around the hinge until the second limiting surface 21 contacts the first limiting surface 11 of the limiting member 3. Similarly, when the second end 32 of the stopper 3 is fixed to the second limit surface 21, the first connection member 1 rotates around the hinge until the first limit surface 11 contacts the first end 31 of the stopper 3, or the second connection member 2 rotates around the hinge until the first end 31 of the stopper 3 contacts the first limit surface 11, so that the relative rotation of the first connection member 1 and the second connection member 2 stops, that is, the rotation limit is achieved. In this way, by arranging the stopper 3 between the limit matching surfaces of the hinge, the torque transmission can be better carried out, the rigid impact during the collision limit is further reduced, and the hinge paint film is prevented from being damaged, which is conducive to improving the service life of the hinge.
[0038] It can be understood that the first limiting surface 11 of the above-mentioned first connecting member 1 is located within the rotation coverage range of the second connecting member 2, and the second limiting surface 21 corresponds to the first limiting surface 11 being located within the rotation coverage range of the first connecting member 1. When the hinge is not provided with a limiting member 3, the first connecting member 1 and the second connecting member 2 can also achieve rotation limitation through the surface contact between the first limiting surface 11 and the second limiting surface 21 after they are rotated to a certain angle. When the hinge is provided with a limiting member 3, in particular, the limiting member 3 is provided between the limiting matching surfaces. For example, in the present embodiment, the second end 32 of the limiting member 3 is fixedly connected to the first limiting surface 11, and the first end 31 thereof corresponds to the rotational movement route of the second limiting surface 21. When the second connecting member 2 is rotated until the second limiting surface 21 contacts the first end 31 of the limiting member 3, the rotational limitation of the second connecting member 2 is achieved. At this time, the door hinge reaches the maximum opening angle. In this way, the setting position of the limiting member 3 can be found according to the original limiting contact path, and the torque transmission can be optimized, thereby further reducing the rigid impact during collision limitation and avoiding damage to the hinge paint film.
[0039] In some embodiments, Figures 3 to 5As shown, the second end 32 includes at least one latch 321, and the first connector 1 or the second connector 2 is provided with a socket 111 corresponding to the latch 321, and the latch 321 is inserted into the socket 111 so as to be axially movable. The stopper 3 is detachably fixedly connected to the first connector 1 or the second connector 2 by the insertion connection, and when the stopper 3 needs to be replaced due to wear of the plastic coating 311 or the need to adjust the height of the stopper 3 to change the maximum opening angle of the hinge, the stopper 3 can be disassembled and assembled conveniently and quickly, thereby improving the production or maintenance efficiency.
[0040] For example, Figure 4 and Figure 5 As shown, in this embodiment, the second end 32 includes two spaced-apart pins 321, and two corresponding insertion holes 111 are provided on the first limiting surface 11 of the first connecting member 1. The pins 321 are correspondingly inserted into the two insertion holes 111, thereby completing the detachable fixed connection of the second end 32 to the first limiting surface 11. At the same time, the design of the two pins 321 can avoid relative rotation between the limiting member 3 and the first connecting member 1, thereby improving the connection stability.
[0041] Furthermore, if Figure 3 As shown, in this embodiment, the above-mentioned plug hole 111 can be designed as a through hole, which can prevent the electrophoresis liquid from accumulating in the plug hole 111 when the first connecting member 1 is subjected to electrophoresis.
[0042] Furthermore, in this embodiment, the latch pin 321 may be connected to the insertion hole 111 by interference fit to improve the connection stability between the limiting member 3 and the corresponding connecting member and prevent the limiting member 3 from falling off from the insertion hole 111 .
[0043] In some embodiments, Figure 5 As shown, the surface of the latch pin 321 is provided with a plurality of annular protrusions 3211, and the annular protrusions 3211 can be made of nylon materials such as PA6 or PVC type materials; in the present embodiment, the surface of the latch pin 321 is provided with three annular protrusions 3211, and the annular protrusions 3211 are arranged around the circumference of the latch pin 321 and are arranged at intervals in the axial direction of the latch pin 321, and the outer diameter of the annular protrusions 3211 is slightly larger than the aperture of the socket 111, so that the annular protrusions 3211 can be used to achieve an interference fit connection between the latch pin 321 and the socket 111, thereby effectively improving the connection stability between the latch pin 321 and the socket 111.
[0044] In some embodiments, Figure 5 As shown, the latch 321 is further defined with a hollow cavity 3212, and the hollow cavity 3212 is arranged along the axial direction of the latch 321. The arrangement of the hollow cavity 3212 can improve the structural elasticity of the latch 321, thereby ensuring smooth assembly of the latch 321 and the socket 111, and facilitating their assembly and disassembly.
[0045] In some embodiments, Figure 4 and Figure 5 As shown, the radial cross-section of the socket 111 is elliptical or approximately elliptical, and the second end 32 of the pin 321 is set to correspond to the shape of the socket 111. In this way, the processing accuracy requirements of the second end 32 and the socket 111 can be reduced, and the assemblability of the two can be improved.
[0046] Since the door hinge reaches the maximum opening angle when the first connecting member 1 or the second connecting member 2 rotates to contact the stopper 3, the size and height of the stopper 3 itself will affect the maximum opening angle of the hinge. Figure 6 and Figure 7 As shown, the second end 32 can also be a threaded column 322, and the first connecting member 1 or the second connecting member 2 is provided with a threaded hole (not shown in the figure) corresponding to the threaded column 322, and the threaded column 322 is threadedly connected with the threaded hole. In this way, the setting height of the limit member 3 on the first connecting member 1 or the second connecting member 2 can be controlled by adjusting the screw-in depth of the threaded column 322, thereby achieving the purpose of adjusting the maximum opening angle of the hinge.
[0047] For example, Figure 6 and Figure 7 As shown, in this embodiment, the hinged connection method of the first connecting member 1 and the second connecting member 2 is the same as the aforementioned, and a threaded hole (not shown in the figure) is provided on the first limiting surface 11 of the first connecting member 1, and the limiting member 3 can be selected as a bolt of M6 specification, and the size of the threaded hole corresponds to the size of the bolt. The end of the bolt corresponds to the first end 31 of the limiting member 3, and the threaded column 322 of the bolt corresponds to the second end 32 of the limiting member 3. The first end 31 is subjected to plastic coating treatment to be provided with a plastic coating layer 311, and then its threaded column 322 is screwed into the threaded hole located on the first limiting surface 11, so as to realize the matching connection between the limiting member 3 and the first connecting member 1. When the limiter 3 is installed, a height gap of 1.5mm is reserved between the limiter 3 and the first limiter surface 11. In this way, by opening and closing the hinge, it can be confirmed whether the maximum opening angle of the hinge is smaller or larger due to precision reasons. When the maximum opening angle of the hinge is larger, there is a risk of collision between the vehicle body and the door after the hinge is installed on the vehicle body. Therefore, the limiter 3 can be rotated out counterclockwise, and the maximum opening angle of the door is reduced; when the maximum opening angle of the hinge is smaller, the limiter 3 is rotated in clockwise, and the maximum opening angle of the door is increased. In this embodiment, the reference value of the rotation amount of the limiter 3 can be set as: the height of the first end 31 of the limiter 3 changes by 0.1mm, and the maximum opening angle of the hinge changes by 1°. In this way, the pitch of the second end 32 of the limiter 3 is designed to be 1mm, so the actual adjustment angle of rotating the limiter 3 one circle is about 10°, which can effectively meet the installation requirements of the door hinge in multiple vehicle models and the angle adjustment requirements in daily use.
[0048] It is understandable that in other embodiments, the plastic coating layer 311 of the bolt may also be configured to cover the entire structure of the limiter 3 including the threaded column 322 of the second end 32, or the bolt may be directly made of nylon materials such as PA6 or PVC type materials.
[0049] Furthermore, in this embodiment, the threaded hole may also be designed as a through hole, so that the electrophoresis liquid can be prevented from accumulating in the threaded hole when the first connecting member 1 is subjected to electrophoresis.
[0050] In some embodiments, thread fastener can also be coated on the threaded surface of the threaded column 322 or the threaded hole to further improve the connection stability between the threaded column 322 and the threaded hole, prevent the hinge angle from changing due to its own rotation after the limit member 3 is adjusted to the specified position, and prevent the angle from changing due to door pressure and body vibration during daily use.
[0051] In addition, in another embodiment, a vehicle is provided, comprising a vehicle body, a vehicle door, and the vehicle door hinge of the above embodiment, wherein the first connecting member 1 formed by forging in the vehicle door hinge is connected to the vehicle body, the second connecting member 2 formed by stamping is connected to the vehicle door, and the stopper 3 is arranged on the first connecting member 1, so that the weight of the vehicle door can be reduced and the comfort of opening and closing the vehicle door can be effectively improved. For other structures and working principles of the vehicle door hinge, please refer to the above description of the embodiment of the vehicle door hinge. Since the vehicle door hinge has the above technical effects, the vehicle having the vehicle door hinge should also have the corresponding technical effects, which will not be repeated here.
[0052] It is understood that in this application, unless otherwise clearly specified and limited, the terms "assembly", "connection" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0053] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. "Multiple" means two or more, unless otherwise clearly and specifically defined. And the description of the terms "some embodiments", "exemplarily", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application.
[0054] The schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without contradicting each other.
[0055] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can modify, replace and modify the above embodiments within the scope of the present application. Therefore, any changes or modifications made in accordance with the claims and description of the present application should fall within the scope of the patent of this application.
Claims
1. A vehicle door hinge, characterized in that: include: A first connecting member, wherein the first connecting member is formed by forging; A second connecting member, the second connecting member is formed by stamping, and the second connecting member and the first connecting member are hinged to each other; and A limiting member, wherein the limiting member has a first end and a second end disposed opposite to each other, the first end is provided with a plastic coating layer, and the second end is detachably fixed to the first connecting member or the second connecting member; Wherein, when the second end is fixed to the first connecting member, the second connecting member is limited when it rotates to contact with the first end; When the second end is fixed to the second connecting member, the first connecting member is limited when it rotates to contact with the first end.
2. The vehicle door hinge according to claim 1, characterized in that: The second end includes at least one plug pin, and the first connecting member or the second connecting member is provided with a plug hole corresponding to the plug pin, and the plug pin is inserted into the plug hole in an axially movable manner.
3. The vehicle door hinge according to claim 2, characterized in that: The plug is connected to the socket by interference fit.
4. The vehicle door hinge according to claim 3, characterized in that: A plurality of annular protrusions are provided on the surface of the latch pin, and the annular protrusions are arranged around the circumference of the latch pin and are arranged at intervals in the axial direction of the latch pin; Wherein, the outer diameter of the annular protrusion is slightly larger than the aperture of the insertion hole.
5. The vehicle door hinge according to claim 4, characterized in that: The latch pin further defines a hollow cavity, and the hollow cavity is arranged along the axial direction of the latch pin.
6. The vehicle door hinge according to claim 5, characterized in that: The radial cross-section of the insertion hole is elliptical or approximately elliptical.
7. The vehicle door hinge according to claim 1, characterized in that: The second end is a threaded column, and the first connecting member or the second connecting member is provided with a threaded hole corresponding to the threaded column, and the threaded column is threadedly matched with the threaded hole.
8. The vehicle door hinge according to claim 7, characterized in that: The threaded surface of the threaded column or the threaded hole is coated with thread fastening glue.
9. The vehicle door hinge according to any one of claims 1 to 8, characterized in that: The first connecting member has a first limiting surface, the second connecting member has a second limiting surface arranged corresponding to the first limiting surface, and the second end is detachably fixed to the first limiting surface or the second limiting surface; Wherein, when the second end is fixed to the first limiting surface, the first connecting member or the second connecting member is limited when it rotates until the second limiting surface contacts the first end; When the second end is fixed to the second limiting surface, the first connecting member or the second connecting member is limited when it rotates until the first limiting surface contacts the first end.
10. A vehicle, characterized in that: It comprises a vehicle body, a vehicle door and a door hinge as described in any one of claims 1 to 9, wherein the first connecting member is connected to the vehicle body, the second connecting member is connected to the vehicle door, and the limiting member is arranged on the first connecting member.