Vehicle

Abstract

The utility model provides a vehicle. The vehicle comprises a vehicle body; a lower back door; the lower back door is connected with the automobile body through the hinge assembly; the hinge assembly comprises a first connecting piece and a second connecting piece, one end of the first connecting piece is rotationally connected with the automobile body, the other end of the first connecting piece is rotationally connected with the lower back door, one end of the second connecting piece is rotationally connected with the automobile body, and the other end of the second connecting piece is rotationally connected with the lower back door. And the length of the first connecting piece is not equal to that of the second connecting piece. In the initial stage of opening of the lower back door, the top of the lower back door can be rapidly away from the face, used for abutting against the top of the lower back door, on the automobile body, so that the problem that the top of the lower back door is prone to friction with the automobile body can be solved, and then the problem that abrasion is prone to being caused under the long-term use condition is solved.

Description

Technical Field

[0001] This application relates to the technical field of vehicles, and particularly relates to a vehicle. Background Art

[0002] At present, vehicles have been widely popularized in ordinary families and integrated into people's daily lives, and the frequency of people using vehicles for travel is increasing. The rear door of a vehicle, also known as the tailgate, is usually provided at the rear of the vehicle body and is used to cover the trunk of the vehicle. According to the different connection positions of the rear door and the vehicle body, the rear door can be divided into an upper rear door and a lower rear door.

[0003] In a traditional vehicle with a lower rear door, the lower rear door is usually connected to the vehicle body through a single-axis hinge. During the opening or closing process of the lower rear door, the top of the lower rear door is prone to rubbing against the vehicle body, and it is likely to cause wear in the case of long-term use. Utility Model Content

[0004] This application provides a vehicle that can improve the problem that the top of the lower rear door is prone to rubbing against the vehicle body when the lower rear door is opened or closed.

[0005] A vehicle includes: a vehicle body; a lower rear door; a hinge assembly, the lower rear door is connected to the vehicle body through the hinge assembly so that the lower rear door can be opened and closed in a manner of flipping relative to the vehicle body; wherein, the hinge assembly includes a first connecting member and a second connecting member, one end of the first connecting member is rotatably connected to the vehicle body, and the other end is rotatably connected to the lower rear door, one end of the second connecting member is rotatably connected to the vehicle body, and the other end is rotatably connected to the lower rear door, and the length of the first connecting member is not equal to the length of the second connecting member.

[0006] In this application, under the action of the hinge assembly, the lower rear door will first move from the closed position to the intermediate position, and the attitude of the lower rear door at the intermediate position is the same as that at the closed position, that is, the lower rear door will move downward and backward at the same time. In this way, at the initial stage of opening the lower rear door, the top of the lower rear door will quickly move away from the surface of the vehicle body that is used to abut against the top of the lower rear door. Therefore, the problem that the top of the lower rear door is prone to rubbing against the vehicle body can be improved, and further the problem that it is likely to cause wear in the case of long-term use can be improved.

[0007] In some embodiments, the hinge assembly further includes a vehicle body mounting member and a rear door mounting member, the vehicle body mounting member is fixedly connected to the vehicle body, the rear door mounting member is fixedly connected to the lower rear door, the two ends of the first connecting member are respectively connected to the vehicle body mounting member and the rear door mounting member at a first hinge point and a second hinge point, and the two ends of the second connecting member are respectively connected to the vehicle body mounting member and the rear door mounting member at a third hinge point and a fourth hinge point.

[0008] In some embodiments, the rear door mounting member has a first mating surface that fits against the bottom of the lower rear door; when the lower rear door is in the closed state, the first mating surface forms an angle with the horizontal direction, and the angle is greater than or equal to 5° and less than or equal to 40°.

[0009] In some embodiments, the rear door mounting member includes a first main body portion and a first flange connected to the top of the first main body portion. The top surface of the first flange forms the first mating surface, and the second hinge point and the fourth hinge point are located on the first main body portion.

[0010] In some embodiments, the first connecting member and the second connecting member are located on the same side of the first main body portion in the thickness direction; the first main body portion has a second mating surface that mates with the first connecting member and a third mating surface that mates with the second connecting member, and the second mating surface and the third mating surface are parallel to each other and non-coplanar.

[0011] In some embodiments, the first main body portion includes a first sub-segment, a first bending segment, and a second sub-segment connected in sequence. The second mating surface is located on the first sub-segment, and the third mating surface is located on the second sub-segment.

[0012] In some embodiments, the vehicle body mounting member includes a second main body portion and a second flange connected to one side of the second main body portion. The second flange is connected to the vehicle body, and the first hinge point and the third hinge point are located on the second main body portion.

[0013] In some embodiments, the first connecting member and the second connecting member are located on the same side of the second main body portion in the thickness direction; the second main body portion has a fourth mating surface that mates with the first connecting member and a fifth mating surface that mates with the second connecting member, and the fourth mating surface and the fifth mating surface are parallel to each other and non-coplanar.

[0014] In some embodiments, the second main body portion includes a third sub-segment, a second bending segment, and a fourth sub-segment connected in sequence. The fourth mating surface is located on the third sub-segment, and the fifth mating surface is located on the fourth sub-segment.

[0015] In some embodiments, the lower rear door includes an outer rear door panel and an inner rear door panel. The inner rear door panel is connected to the outer rear door panel, and the rear door mounting member is fixedly connected to the inner rear door panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic structural diagram of a lower rear door and a hinge assembly provided by an embodiment of the present application;

[0017] Figure 2Schematic structural diagram of a hinge assembly provided by an embodiment of the present application;

[0018] Figure 3 Simplified schematic diagram of the movement trajectory of a hinge assembly provided by an embodiment of the present application;

[0019] Figure 4 Schematic structural diagram of a hinge assembly provided by an embodiment of the present application with the vehicle body mounting member removed;

[0020] Figure 5 Schematic structural diagram of a hinge assembly provided by an embodiment of the present application with the rear door mounting member removed.

[0021] The descriptions of the reference numerals in the figures are as follows:

[0022] 200 - lower rear door, 210 - outer rear door panel, 220 - inner rear door panel;

[0023] 300 - hinge assembly, 310 - vehicle body mounting member, 311 - second main body portion, 312 - second flanging, 3111 - fourth mating surface, 3112 - fifth mating surface, 3113 - third sub - segment, 3114 - second bending segment, 3115 - fourth sub - segment, 320 - rear door mounting member, 321 - first mating surface, 322 - first main body portion, 323 - first flanging, 3221 - second mating surface, 3222 - third mating surface, 3223 - first sub - segment, 3224 - first bending segment, 3225 - second sub - segment, 330 - first connecting member, 340 - second connecting member. Detailed implementation manners

[0024] In order to make the objectives, technical solutions and advantages of the present application more clear and understandable, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0025] In the description of the present application, it should be understood that unless otherwise clearly specified and limited, if there are terms such as "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only for illustrative purposes and cannot be understood as a limitation of this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0026] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as implying or suggesting relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this application, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0027] In the description of this application, unless otherwise clearly specified and limited, terms such as "mounted", "connected", "joined", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0028] Currently, vehicles have been widely popularized in ordinary families and integrated into people's daily lives, and the frequency of people using vehicles for travel is getting higher and higher. The rear door of a vehicle is also called a tailgate, which is usually arranged at the rear of the vehicle body and used to cover the trunk of the vehicle. According to the different connection positions of the rear door and the vehicle body, the rear door can be divided into an upper rear door and a lower rear door.

[0029] In a traditional vehicle with a lower rear door, the lower rear door is usually connected to the vehicle body through a single-axis hinge. During the opening or closing process of the lower rear door, the top of the lower rear door is prone to friction with the vehicle body, and it is prone to wear in the case of long-term use.

[0030] To solve the above technical problems, an embodiment of this application provides a vehicle. As Figure 1 and Figure 2 shown, the vehicle includes a vehicle body (not shown in the figure), a lower rear door 200, and a hinge assembly 300. The lower rear door 200 is connected to the vehicle body through the hinge assembly 300 so that the lower rear door 200 can be opened and closed in a manner of flipping relative to the vehicle body. Among them, the hinge assembly 300 includes a first connecting member 330 and a second connecting member 340. One end of the first connecting member 330 is rotatably connected to the vehicle body, and the other end is rotatably connected to the lower rear door 200. One end of the second connecting member 340 is rotatably connected to the vehicle body, and the other end is rotatably connected to the lower rear door 200. The length of the first connecting member 330 is not equal to the length of the second connecting member 340.

[0031] In this application, the lower back door 200 is connected to the vehicle body through a hinge assembly 300, enabling the lower back door 200 to rotate relative to the vehicle body. Among them, in the hinge assembly 300, both ends of the first connecting member 330 are in a rotational connection relationship with the vehicle body and the lower back door 200, and both ends of the second connecting member 340 are also in a rotational connection relationship with the vehicle body and the lower back door 200. Thus, a total of four hinge points are formed.

[0032] Since the lengths of the first connecting member 330 and the second connecting member 340 are not equal. In this way, when the first connecting member 330 and the second connecting member 340 rotate relative to the vehicle body, they will drive the lower back door 200 to move. During the movement, there is an intermediate position of the lower back door 200. When the lower back door 200 moves from the closed position to this intermediate position, the lower back door 200 will perform an approximately translational movement, and moreover, the posture of the lower back door 200 when it is in the intermediate position is the same as the posture when the lower back door 200 is in the closed position.

[0033] Figure 3 It is a movement trajectory diagram of a simplified structure of a hinge assembly 300 provided by an embodiment of this application. The following will be specifically described through the movement trajectory diagram.

[0034] As Figure 3 shown, denote the hinge point formed between one end of the first connecting member 330 and the vehicle body as the first hinge point O1, and the hinge point formed between the other end and the lower back door 200 as the second hinge point O2. Denote the hinge point formed between one end of the second connecting member 340 and the vehicle body as the third hinge point O3, and the hinge point formed between the other end and the lower back door 200 as the fourth hinge point O4.

[0035] The solid line represents the state of the hinge assembly 300 when the lower back door 200 is in the initial closed position, the dashed line represents the state of the hinge assembly 300 when the lower back door 200 is in the intermediate position, and the single dotted line represents the state of the hinge assembly 300 when the lower back door 200 is in a certain position between the intermediate position and the maximum open position.

[0036] The length between the first hinge point O1 and the second hinge point O2 is different from the length between the third hinge point O3 and the fourth hinge point O4 (for example, the length of the second connecting member 340 is less than the length of the first connecting member 330). Under the action of this structure, the lower back door 200 will have an intermediate position. Among them, the quadrilateral formed by O1, O2’, O4’ and O3 is the form of the hinge assembly 300 when the lower back door 200 is in the intermediate position. It can be seen from the figure that when the lower back door 200 moves from the closed position to the intermediate position, the attitude of the lower back door 200 when it is in the closed position is the same as that when it is in the intermediate position, that is, O2O4 and O2’O4’ are in a parallel state; when the lower back door 200 moves from the intermediate position to the open position, the lower back door 200 will gradually flip from this parallel attitude (O2O4 and O2’O4’ are parallel), that is, the lower back door 200 will gradually rotate from the intermediate position until the lower back door 200 is completely opened.

[0037] Based on the above process, in the present application, under the action of the hinge assembly 300, the lower back door 200 will first move from the closed position to the intermediate position, and the attitude of the lower back door 200 when it is in the intermediate position is the same as that when it is in the closed position, that is, the lower back door 200 will move downward and backward at the same time. In this way, at the initial stage of opening the lower back door 200, the top of the lower back door 200 will quickly move away from the surface on the vehicle body that abuts against the top of the lower back door 200. Therefore, the problem that the top of the lower back door 200 is prone to friction with the vehicle body can be improved, and further the problem of easy wear in the case of long-term use can be improved.

[0038] In some embodiments, as Figure 2 and Figure 3 shown, the hinge assembly 300 further includes a vehicle body mounting member 310 and a back door mounting member 320. The vehicle body mounting member 310 is fixedly connected to the vehicle body, and the back door mounting member 320 is fixedly connected to the lower back door 200. The two ends of the first connecting member 330 are respectively connected to the vehicle body mounting member 310 and the back door mounting member 320 at the first hinge point O1 and the second hinge point O2, and the two ends of the second connecting member 340 are respectively connected to the vehicle body mounting member 310 and the back door mounting member 320 at the third hinge point O3 and the fourth hinge point O4.

[0039] In this embodiment, the vehicle body mounting member 310 is first fixedly connected to the vehicle body and then rotatably connected to the first connecting member 330 and the second connecting member 340. The rear door mounting member 320 is first fixedly connected to the lower rear door 200 and then rotatably connected to the first connecting member 330 and the second connecting member 340. In this way, the rotational connection of the first connecting member 330 and the second connecting member 340 relative to the vehicle body and the lower rear door 200 can be achieved. That is to say, the vehicle body mounting member 310, the first connecting member 330, the rear door mounting member 320, and the second connecting member 340 are connected in sequence and form four hinge points. Therefore, the hinge assembly 300 constitutes a four-bar linkage mechanism. During the movement of the hinge assembly 300, the vehicle body mounting member 310 connected to the vehicle body remains stationary and serves as the "frame" in the four-bar linkage mechanism. The first connecting member 330 and the second connecting member 340 are connected to the vehicle body mounting member 310, and the first connecting member 330 and the second connecting member 340 serve as the "rocking bars" in the four-bar linkage mechanism and can rotate around the vehicle body mounting member 310. The rear door mounting member 320 is connected to the lower rear door 100, and at the same time, the rear door mounting member 320 is respectively hinged to the other ends of the first connecting member 330 and the second connecting member 340. The rear door mounting member 320 serves as the "link" in the four-bar linkage mechanism.

[0040] It is easy to understand that the movement trajectory of the lower rear door 100 is the same as that of the rear door mounting member 320, and the attitude of the rear door mounting member 320 can also represent the attitude of the lower rear door 200. Through the hinge assembly 300 of the four-bar linkage mechanism, on the one hand, the movement of the lower rear door 200 between the closed position, the intermediate position, and the maximum opening position can be realized, which is beneficial to improving the problem that the top of the lower rear door 200 is prone to friction with the vehicle body, and further improving the problem of easy wear in the case of long-term use. On the other hand, it is beneficial to improve the convenience and reliability of the rotational connection between the first connecting member 330 and the second connecting member 340 and the vehicle body and the lower rear door 200.

[0041] In some embodiments, as Figure 2 shown, an installation surface is provided at the bottom of the lower rear door 200. The rear door mounting member 320 has a first mating surface 321. The rear door mounting member 320 is fixed to the installation surface, and the first mating surface 321 is in contact with the installation surface. By providing the installation surface and the first mating surface 321, it is beneficial to improve the reliability and stability of the connection between the lower rear door 200 and the rear door mounting member 320.

[0042] In some embodiments, when the lower back door 200 is in the closed state, the first mating surface 321 has an angle with the horizontal direction, and this angle is greater than or equal to 5° and less than or equal to 40°. The first mating surface 321 is in contact with the mounting surface, which means that the mounting surface also has an angle of 5° to 40° with the horizontal direction. Generally, taking the case where the mounting surface is located on the inner panel 200 of the back door as an example, in addition to forming the mounting surface, the inner panel 200 of the back door also has a vertical surface extending in the vertical direction. In this way, there is an angle of 95° to 135° between the mounting surface and the vertical surface. In this way, it is ensured that the inner panel 200 of the back door can be formed by existing sheet metal processing techniques and the above-mentioned vertical surface and mounting surface can be fabricated. That is to say, if the above angle is too small, the inner panel of the back door with the mounting surface and the vertical surface cannot be fabricated by existing sheet metal processing techniques.

[0043] In some embodiments, as Figure 1 shown, the lower back door 200 includes an outer panel 210 of the back door and an inner panel 220 of the back door. The inner panel 220 of the back door is connected to the outer panel 210 of the back door, and the back door mounting member 320 is fixedly connected to the inner panel 220 of the back door. Thus, the fixed installation of the back door mounting member 320 and the lower back door 200 can be achieved.

[0044] In some embodiments, as Figure 2 and Figure 4 shown, the back door mounting member 320 includes a first main body portion 322 and a first flanging 323 connected to the top of the first main body portion 322. The top surface of the first flanging 323 forms the first mating surface 321, and the second hinge point O2 and the fourth hinge point O4 are located on the first main body portion 322.

[0045] In this embodiment, the back door mounting member 320 is mainly composed of the first main body portion 322 and the first flanging 323, and the cross-section of the back door mounting member 320 is generally "L"-shaped. Further, the first mating surface 321 is formed on the top of the first flanging 323, and the second hinge point O2 and the fourth hinge point O4 are located on the first main body portion 322. That is to say, in this embodiment, the back door mounting member 320 is modularly divided. The first flanging 323 at the top is connected to the lower back door 200, and the first main body portion 322 is connected to the first connecting member 330 and the second connecting member 340. This is beneficial to improving the convenience of connection between the back door mounting member 320 and other structures. In addition, by bending the top of the back door mounting member 320, the ability of the back door mounting member 320 to resist external forces can also be enhanced, so that the back door mounting member 320 is not easily deformed. That is to say, the structural strength and structural stiffness of the back door mounting member 320 itself are enhanced.

[0046] In some embodiments, as Figure 2 and Figure 4As shown, the first connecting member 330 and the second connecting member 340 are located on the same side of the first main body portion 322 in the thickness direction. The first main body portion 322 has a second mating surface 3221 that mates with the first connecting member 330 and a third mating surface 3222 that mates with the second connecting member 340. The second mating surface 3221 and the third mating surface 3222 are parallel to each other and non-coplanar.

[0047] In this embodiment, the first connecting member 330 and the second connecting member 340 are located on the same side of the first main body portion 322 in the thickness direction. Thus, the size of the hinge assembly 300 in the thickness direction can be reduced, which is beneficial to the miniaturized design of the hinge assembly 300. In addition, the first connecting member 330 mates with the second mating surface 3221 of the first main body portion 322, and the second connecting member 340 mates with the third mating surface 3222 of the first main body portion 322. The second mating surface 3221 and the third mating surface 3222 are parallel to each other and non-coplanar. In this way, the first connecting member 330 and the second connecting member 340 can be offset from each other in the thickness direction of the hinge assembly 300, thereby avoiding interference between the first connecting member 330 and the second connecting member 340 during rotation.

[0048] In some embodiments, as Figure 2 and Figure 4 shown, the first main body portion 322 includes a first sub-segment 3223, a first bending segment 3224, and a second sub-segment 3225 that are sequentially connected. The second mating surface 3221 is located on the first sub-segment 3223, and the third mating surface 3222 is located on the second sub-segment 3225. By providing the first bending segment 3224, the first sub-segment 3223 and the second sub-segment 3225 are offset in the thickness direction of the hinge assembly 300, and the second mating surface 3221 and the third mating surface 3222 that are parallel to each other and non-coplanar can be constructed.

[0049] In some embodiments, as Figure 2 and Figure 5 shown, the vehicle body mounting member 310 includes a second main body portion 311 and a second flange 312 connected to one side of the second main body portion 311. The second flange 312 is connected to the vehicle body, and the first hinge point O1 and the third hinge point O3 are located on the second main body portion 311.

[0050] In this embodiment, the vehicle body mounting member 310 is mainly composed of a second main body portion 311 and a second flanging 312, and the cross-section of the vehicle body mounting member 310 is generally "L"-shaped. Further, the second flanging 312 is connected to the vehicle body, and the first hinge point O1 and the third hinge point O3 are located on the second main body portion 311. That is to say, in this embodiment, the vehicle body mounting member 310 is also modularized. The first flanging 323 on the side is connected to the vehicle body, and the second main body portion 311 is connected to the first connecting member 330 and the second connecting member 340, which is beneficial to improving the convenience of connection between the vehicle body mounting member 310 and other structures. In addition, bending the side of the vehicle body mounting member 310 can also enhance the structural strength and structural stiffness of the vehicle body mounting member 310 itself.

[0051] In some embodiments, as Figure 2 and Figure 5 shown, the first connecting member 330 and the second connecting member 340 are located on the same side of the second main body portion 311 in the thickness direction. The second main body portion 311 has a fourth mating surface 3111 that mates with the first connecting member 330 and a fifth mating surface 3112 that mates with the second connecting member 340. The fourth mating surface 3111 and the fifth mating surface 3112 are parallel to each other and non-coplanar.

[0052] In this embodiment, the first connecting member 330 and the second connecting member 340 are located on the same side of the second main body portion 311 in the thickness direction. In this way, the size of the hinge assembly 300 in the thickness direction can be reduced, which is beneficial to realizing the miniaturized design of the hinge assembly 300. In addition, the first connecting member 330 mates with the fourth mating surface 3111 of the second main body portion 311, and the second connecting member 340 mates with the fifth mating surface 3112 of the second main body portion 311. The fourth mating surface 3111 and the fifth mating surface 3112 are parallel to each other and non-coplanar. In this way, the first connecting member 330 and the second connecting member 340 can be staggered from each other in the thickness direction of the hinge assembly 300, thereby avoiding interference between the first connecting member 330 and the second connecting member 340 during rotation.

[0053] In some embodiments, as Figure 2 and Figure 5 shown, the second main body portion 311 includes a third sub-segment 3113, a second bending segment 3114, and a fourth sub-segment 3115 that are connected in sequence. The fourth mating surface 3111 is located on the third sub-segment 3113, and the fifth mating surface 3112 is located on the fourth sub-segment 3115. By providing the second bending segment 3114, the third sub-segment 3113 and the fourth sub-segment 3115 are offset in the thickness direction of the hinge assembly 300, and the fourth mating surface 3111 and the fifth mating surface 3112 that are parallel to each other and non-coplanar can be constructed.

[0054] In some of these embodiments, as Figure 2 、Figure 4 and Figure 5 As shown in Figure 5 , along the thickness direction of the hinge assembly 300, the first connecting member 330 and the second connecting member 340 are located between the first main body portion 321 and the second main body portion 311. One end of the first connecting member 330 is engaged with the second mating surface 3221, and the other end is engaged with the fourth mating surface 3111. One end of the second connecting member 340 is engaged with the third mating surface 3222, and the other end is engaged with the fifth mating surface 3112. In this way, it is beneficial to reduce the size of the hinge assembly 300 in the thickness direction, improve the structural compactness between various components, and thus facilitate the realization of the miniaturized design of the hinge assembly 300.

[0055] The above content is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application can easily think of changes or substitutions, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A vehicle, characterized in that: include: Car body; Lower back door; a hinge assembly, through which the lower back door is connected to the vehicle body so that the lower back door can be opened and closed in a flipping manner relative to the vehicle body; Wherein, the hinge assembly includes a first connecting member and a second connecting member, one end of the first connecting member is rotatably connected to the vehicle body, and the other end is rotatably connected to the lower tailgate, one end of the second connecting member is rotatably connected to the vehicle body, and the other end is rotatably connected to the lower tailgate, and the length of the first connecting member is not equal to the length of the second connecting member.

2. The vehicle according to claim 1, characterized in that The hinge assembly also includes a body mounting member and a tailgate mounting member, the body mounting member is fixedly connected to the body, the tailgate mounting member is fixedly connected to the lower tailgate, the two ends of the first connecting member are respectively connected to the body mounting member and the tailgate mounting member at a first hinge point and a second hinge point, and the two ends of the second connecting member are respectively connected to the body mounting member and the tailgate mounting member at a third hinge point and a fourth hinge point.

3. The vehicle according to claim 2, characterized in that The back door mounting member has a first mating surface, and the first mating surface is in contact with the bottom of the lower back door; When the lower tailgate is in a closed state, the first mating surface has an angle with the horizontal direction, and the angle is greater than or equal to 5° and less than or equal to 40°.

4. The vehicle according to claim 3, characterized in that The back door mounting component includes a first main body and a first flange connected to the top of the first main body, the top surface of the first flange forms the first mating surface, and the second hinge point and the fourth hinge point are located in the first main body.

5. The vehicle according to claim 4, characterized in that The first connecting member and the second connecting member are located on the same side of the first main body along the thickness direction; The first main body has a second mating surface mating with the first connecting member and a third mating surface mating with the second connecting member, and the second mating surface and the third mating surface are parallel to each other and not coplanar.

6. The vehicle according to claim 5, characterized in that The first main body portion includes a first sub-segment, a first bending segment, and a second sub-segment connected in sequence. The second mating surface is located in the first sub-segment, and the third mating surface is located in the second sub-segment.

7. The vehicle according to claim 2, characterized in that The vehicle body mounting component includes a second main body and a second flange connected to one side of the second main body, the second flange is connected to the vehicle body, and the first hinge point and the third hinge point are located on the second main body.

8. The vehicle according to claim 7, characterized in that The first connecting member and the second connecting member are located on the same side of the second main body along the thickness direction; The second main body has a fourth mating surface mating with the first connecting member and a fifth mating surface mating with the second connecting member, and the fourth mating surface and the fifth mating surface are parallel to each other and not coplanar.

9. The vehicle according to claim 8, characterized in that The second main body portion includes a third sub-segment, a second bending segment and a fourth sub-segment which are connected in sequence. The fourth mating surface is located in the third sub-segment, and the fifth mating surface is located in the fourth sub-segment.

10. The vehicle according to claim 2, characterized in that The lower back door comprises a back door outer panel and a back door inner panel, the back door inner panel is connected to the back door outer panel, and the back door mounting member is fixedly connected to the back door inner panel.

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