Back door structure and vehicle

Abstract

The utility model provides a back door structure and a vehicle, the back door structure comprises a back door inner plate, a back door outer plate and a mounting plate, the back door inner plate comprises an inner connecting part and an inner main body part which are connected; the back door outer plate comprises an outer connecting part and an outer main body part which are connected, the outer connecting part is connected with the inner connecting part, and the outer main body part and the inner main body part are spaced; the mounting plate comprises a middle connecting part connected between the outer connecting part and the inner connecting part, a first mounting part connected to the inner main body part and spaced from the outer main body part, a second mounting part connected to the outer main body part and spaced from the inner main body part, and a third mounting part connected to the inner main body part and spaced from the outer main body part, which are connected in sequence; the first installation part and the inner main body part are jointly used for being connected with a rear windshield wiper motor and a vibration absorber which are located on the side, back to the first installation part, of the inner main body part. The middle of the second mounting part hunches up towards the outer connecting part to form a cavity with the outer main body part, so that the rigidity of the back door structure is improved, and the problem of cracking of the back door inner plate is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicle parts, and in particular relates to a back door structure and a vehicle. Background Art

[0002] The tailgate structure is generally provided with a rear wiper motor and a vibration absorber. The rear wiper motor and the vibration absorber on the current tailgate structure are arranged far apart, and the forces on the rear wiper motor and the vibration absorber are dispersed, which is not easy to cause resonance of the components in the tailgate structure, and the structural strength and rigidity requirements of the mounting plate on the tailgate structure are relatively low. However, with the increasing requirements for lightweight and compact tailgate structures in recent years, the rear wiper motor and the vibration absorber need to be installed at close distances on the mounting plate with a compact arrangement, resulting in a large mass and concentrated mass in the middle of the mounting plate. The top of the mounting plate is welded to the tailgate inner panel and the tailgate outer panel, and the bottom end is connected to the tailgate outer panel by expansion glue. Due to the strong vibration of the vibration absorber, the mounting plate, the tailgate inner panel and the tailgate outer panel are easily caused to resonate, resulting in problems such as cracking of the tailgate inner panel. Utility Model Content

[0003] The utility model aims to provide a tailgate structure and a vehicle, aiming to solve the technical problem that the tailgate inner panel is prone to cracking due to the compact arrangement of the rear wiper motor and the vibration absorber in the current related tailgate structure.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0005] In a first aspect, a back door structure is provided, comprising a back door inner panel, a back door outer panel and a mounting plate.

[0006] The back door inner plate comprises an inner connecting portion and an inner main body portion which are sequentially connected along a first direction;

[0007] The back door outer panel comprises an outer connecting portion and an outer main body portion which are sequentially connected along a first direction, wherein the outer connecting portion is connected to the inner connecting portion, and the outer main body portion is spaced apart from the inner main body portion;

[0008] The mounting plate includes an intermediate connecting portion, a first mounting portion, a second mounting portion and a third mounting portion which are sequentially connected along a first direction, the intermediate connecting portion is connected between the outer connecting portion and the inner connecting portion, the first mounting portion is connected to the inner main body portion and is spaced apart from the outer main body portion, the second mounting portion is in a U-shape arched toward the outer main body portion, the second mounting portion is connected to the outer main body portion and is spaced apart from the inner main body portion, the third mounting portion is connected to the inner main body portion and is spaced apart from the outer main body portion, and the first mounting portion and the inner main body portion are used together to be connected to a rear wiper motor and a vibration absorber located on a side of the inner main body portion facing away from the first mounting portion.

[0009] In one embodiment of the first aspect, the outer main body portion includes a first outer main body segment, a second outer main body segment and a third outer main body segment which are sequentially connected along a first direction, the first outer main body segment is connected to the external connecting portion, the first outer main body segment and the third outer main body segment are both arched away from the inner main body portion, and the second mounting portion is connected to the second outer main body segment.

[0010] In one embodiment of the first aspect, the second mounting portion includes a first reinforcement segment, a second reinforcement segment and a third reinforcement segment connected in sequence along the first direction, the first reinforcement segment is connected to the first mounting portion, the third reinforcement segment is connected to the third mounting portion, the first reinforcement segment and the third reinforcement segment are both roughly flat-plate-shaped, the first reinforcement segment, the second reinforcement segment and the third reinforcement segment are jointly arranged to form a U-shaped structure, and the second reinforcement segment is connected to the second outer main body segment.

[0011] In one embodiment of the first aspect, the second mounting portion is fixedly connected to the second outer body segment by means of expansion glue.

[0012] In one embodiment of the first aspect, the second mounting portion and the second outer main body section are locked by a locking member, and the locking member is used to lock the outer decorative panel located on the side of the outer main body portion facing away from the inner main body portion to the second outer main body section.

[0013] In one of the embodiments of the first aspect, a avoidance hole is formed on the inner main body and is directly opposite to the locking member in the second direction.

[0014] In one embodiment of the first aspect, the second outer body segment is substantially in the shape of a flat plate, and the second reinforcement segment is substantially in the shape of a flat plate and is in close contact with the second outer body segment.

[0015] In one embodiment of the first aspect, a length of the second reinforcement segment in the first direction is equal to a length of the second outer body segment in the first direction.

[0016] In one embodiment of the first aspect, the first reinforcement section is perpendicular to the second reinforcement section.

[0017] In a second aspect, a vehicle is provided, comprising a tailgate structure as described in the above embodiments.

[0018] The technical effect of the utility model compared with the prior art is as follows: the back door structure realizes the support of the inner main body by the first mounting part through the connection between the first mounting part and the inner main body and the connection between the second mounting part and the outer main body; the first mounting part and the inner main body are overlapped in the second direction to increase the thickness of the back door structure at the connection with the rear wiper motor and the vibration absorber, so as to enhance the structural strength of the back door structure and withstand the gravity of the rear wiper motor and the vibration absorber; the second mounting part is arched toward the outer main body through the middle part and forms a U-shape, and the first mounting part and the third mounting part are both connected to the inner mounting part to form a cavity with the outer main body; the arched structure of the second mounting part can improve the structural strength of the second mounting part, and the structural strength of the back door inner plate is improved by connecting the back door inner plate with the first mounting part and the third mounting part, so that the back door structure is more stable and the rigidity of the back door structure is improved, thereby improving the natural frequency of the back door structure itself, reducing or eliminating the resonance between the back door structure and the vibration absorber, and further reducing or eliminating the problem of cracking of the back door inner plate caused by concentrated force on the inner main board and strong vibration of the vibration absorber. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments of the utility model or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a three-dimensional structural diagram of the back door structure provided by an embodiment of the utility model;

[0021] Figure 2 This is a three-dimensional structural diagram of the connection between the back door structure and the exterior trim provided by the embodiment of the utility model;

[0022] Figure 3 yes Figure 1 A three-dimensional structural diagram of a back door inner panel of a back door structure;

[0023] Figure 4 yes Figure 1 A three-dimensional structural diagram of a back door outer panel of a back door structure in FIG.

[0024] Figure 5 yes Figure 1 A three-dimensional structural diagram of the mounting plate of the back door structure;

[0025] Figure 6 yes Figure 2 A cross-sectional view of the connection between the back door structure and the exterior trim panel.

[0026] Description of reference numerals:

[0027] 10. Back door inner panel; 101. Avoidance hole; 11. Inner connecting part; 12. Inner main body; 121. Inner bending section; 122. Inner fitting section; 20. Back door outer panel; 201. First connecting hole; 21. Outer connecting part; 22. Outer main body; 221. First outer main section; 222. Second outer main section; 223. Third outer main section; 30. Mounting plate; 301. Second connecting hole; 31. Middle connecting part; 32. First mounting part; 321. Middle bending section; 322. Middle fitting section; 33. Second mounting part; 331. First reinforcement section; 332. Second reinforcement section; 333. Third reinforcement section; 34. Third mounting part; 40. Locking member; 91. Rear wiper assembly; 92. Vibration absorber; 921. Mounting seat; 93. Exterior panel. DETAILED DESCRIPTION

[0028] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0029] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0030] 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 the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0031] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" 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 the present invention can be understood according to specific circumstances.

[0032] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0033] An embodiment of the utility model provides a tailgate structure and a vehicle, wherein the vehicle comprises the tailgate structure.

[0034] Specifically, see Figure 1 and Figure 2 The vehicle includes a vehicle body and a back door. The back door is connected to the rear side of the vehicle body and can be covered on the trunk. The back door includes the back door structure, a rear window, a rear wiper assembly 91, a vibration absorber 92 and an exterior panel 93. The back door structure is equipped with a rear window. The rear wiper assembly 91 includes a rear wiper body and a rear wiper motor. The rear wiper motor and the vibration absorber 92 are both installed on the back door structure. The rear wiper body is connected to the output end of the rear wiper motor and fits the rear window. The rear wiper motor can drive the rear wiper body to swing on the rear window. The vibration absorber 92 is connected to a mounting seat 921. The vibration absorber 92 is fixedly connected to the back door structure through the mounting seat 921 to increase the connection area and connection stability. The vibration absorber 92 is generally called a back door damper. Its working principle is to use hydraulic or pneumatic damping to achieve the effect of smooth and slow closing of the back door, which can improve the closing safety of the back door and extend the service life of the back door. The exterior panel 93 is installed on the outside of the tailgate structure to play a decorative role, wherein the exterior panel 93 and the tailgate structure are fixedly connected via a locking member 40, which may be a screw, and the exterior panel 93 may be used to connect the vehicle lights.

[0035] The back door structure includes a back door inner panel 10, a back door outer panel 20 and a mounting plate 30. The back door inner panel 10 is connected to the back door outer panel 20. When the back door of the vehicle is closed, the back door inner panel 10 is located on the inner side of the back door outer panel 20. The mounting plate 30 is connected between the back door inner panel 10 and the back door outer panel 20. The back door inner panel 10, the back door outer panel 20 and the mounting plate 30 are all flat plates formed by bending, shaping or stamping. The rear wiper motor and the vibration absorber 92 are both connected to the back door inner panel 10 and are arranged compactly to meet the compact requirements of the back door structure.

[0036] In the following embodiments, the first direction is the negative direction of the Z axis in the figure, the second direction is the positive direction of the X axis in the figure, and the second direction is perpendicular to the first direction. When the tailgate of the vehicle is closed, the side located in the positive direction of the Z axis represents the upper side, the side located in the negative direction of the Z axis represents the lower side, the side located in the positive direction of the X axis represents the outer side, the side located in the negative direction of the X axis represents the inner side, the side located in the positive direction of the Y axis represents the left side, and the side located in the negative direction of the Y axis represents the right side.

[0037] Please combine Figure 3The back door inner panel 10 includes an inner connecting portion 11 and an inner main body portion 12 which are sequentially connected along a first direction. Figure 4 The back door outer panel 20 includes an outer connecting portion 21 and an outer main body portion 22 which are sequentially connected along a first direction. The outer connecting portion 21 is connected to the inner connecting portion 11 , and the outer main body portion 22 is spaced apart from the inner main body portion 12 .

[0038] The inner connecting portion 11 extends approximately in the up-down direction, and the inner main body 12 is bent inward relative to the inner connecting portion 11. The outer connecting portion 21 extends approximately in the up-down direction, and the outer main body 22 is bent outward relative to the outer connecting portion 21. The outer connecting portion 21 is parallel to the inner connecting portion 11 and abuts against it, and the two can be connected by screws. In this way, the inner main body 12 and the outer main body 22 together form a mounting cavity, and the arrangement of the inner main body 12 and the outer main body 22 bent in opposite directions can improve the structural strength of the outer shell formed by the back door inner panel 10 and the back door outer panel 20.

[0039] Please combine Figure 5 The mounting plate 30 includes an intermediate connecting portion 31, a first mounting portion 32, a second mounting portion 33 and a third mounting portion 34 which are sequentially connected along a first direction.

[0040] The middle connection part 31 is connected between the outer connection part 21 and the inner connection part 11 , wherein the outer connection part 21 , the middle connection part 31 and the inner connection part 11 can be connected in sequence by screws.

[0041] The first mounting portion 32 is connected to the inner body portion 12 and spaced apart from the outer body portion 22 . The second mounting portion 33 is connected to the outer body portion 22 and spaced apart from the inner body portion 12 . The third mounting portion 34 is connected to the inner body portion 12 and spaced apart from the outer body portion 22 .

[0042] Specifically, please combine Figure 6 The first mounting portion 32 is bent inward relative to the middle connecting portion 31 and abuts against the inner main body 12. The second mounting portion 33 is bent outward relative to the first mounting portion 32 and the third mounting portion 34 and abuts against the outer main body 22. The middle portion of the second mounting portion 33 is arched outward. The first mounting portion 32 and the inner main body 12, the second mounting portion 33 and the outer main body 22, and the third mounting portion 34 and the inner main body 12 can be fixedly connected by one or more of screws, rivets and expansion glue. Among them, the rear wiper motor and the vibration absorber 92 are connected to the side of the inner main body 12 that is away from the first mounting portion 32, and are directly opposite to the first mounting portion 32 in the second direction. The first mounting portion 32 and the inner main body 12 are connected to the rear wiper motor and the vibration absorber 92 together.

[0043] The back door structure realizes the support of the first mounting portion 32 to the inner main body 12 by connecting the first mounting portion 32 to the inner main body 12 and connecting the second mounting portion 33 to the outer main body 22. The first mounting portion 32 and the inner main body 12 overlap in the second direction to increase the thickness of the back door structure at the connection with the rear wiper motor and the vibration absorber 92, so as to enhance the structural strength of the back door structure to withstand the gravity of the rear wiper motor and the vibration absorber 92. The second mounting portion 33 arches toward the outer main body 22 through the middle portion to form a U shape, and the first mounting portion 32 and the third mounting portion 34 are both connected to the inner main body 12. The mounting parts are connected to form a cavity with the outer main body 22, and the arched structure of the second mounting part 33 can improve the structural strength of the second mounting part 33, and the structural strength of the back door inner panel 10 is improved by connecting the back door inner panel 10 with the first mounting part 32 and the third mounting part 34, so that the back door structure is more stable, and the rigidity of the back door structure is improved, thereby increasing the inherent frequency of the back door structure itself, reducing or eliminating the resonance between the back door structure and the vibration absorber 92, and further reducing or eliminating the problem of cracking of the back door inner panel 10 caused by concentrated force on the inner main board and strong vibration of the vibration absorber 92.

[0044] Optional, see Figure 6 , the middle connecting portion 31, the inner connecting portion 11 and the outer connecting portion 21 all extend along the first direction. Figure 5 The first mounting portion 32 includes an intermediate bending section 321 and an intermediate bonding section 322 which are sequentially connected along the first direction. The intermediate bending section 321 connects the intermediate connecting portion 31 and the intermediate bonding section 322. The intermediate bending section 321 is bent relative to the intermediate connecting portion 31 in a direction away from the back door outer panel 20. The intermediate bonding section 322 extends substantially along the first direction. Figure 3 The inner main body 12 includes an inner bending section 121 and an inner fitting section 122 which are sequentially connected along the first direction. The inner bending section 121 connects the inner connecting portion 11 and the inner fitting section 122. The inner bending section 121 is bent relative to the inner connecting portion 11 in a direction away from the back door outer panel 20. The inner fitting section 122 extends substantially along the first direction. The middle fitting section 322 is parallel to and fitted with the inner fitting section 122. The middle fitting section 322 is fixedly connected with the inner fitting section 122. The rear wiper motor and the vibration absorber 92 are both connected to the inner fitting section 122. In this way, the middle fitting section 322 is overlapped with the inner fitting section 122 and is both connected to the rear wiper motor and the vibration absorber 92, which increases the structural thickness of the back door structure where the rear wiper motor and the vibration absorber 92 are connected, thereby improving the stability of the back door structure. Specifically, the rear wiper motor and the vibration absorber 92 are connected by screws passing through the middle fitting section 322 and the inner fitting section 122 .

[0045] In some embodiments, see Figure 4 and Figure 6The outer main body portion 22 includes a first outer main body segment 221, a second outer main body segment 222 and a third outer main body segment 223 which are sequentially connected along a first direction. The first outer main body segment 221 is connected to the outer connecting portion 21. The first outer main body segment 221 and the third outer main body segment 223 are both arched back to the inner main body portion 12. The second mounting portion 33 is connected to the second outer main body segment 222. In this way, the outer main body 22 is bent at least at the connection between the first outer main body section 221 and the second outer main body section 222 and at the connection between the third outer main body section 223 and the second outer main body section 222, thereby improving the structural rigidity of the tailgate outer panel 20. At this time, the tailgate outer panel 20 is arched at the first outer main body section 221 toward the direction away from the tailgate inner panel 10, and the tailgate inner panel 10 is arched at the first mounting portion 32 toward the direction away from the tailgate outer panel 20. The tailgate outer panel 20 at the first outer main body section 221 and the tailgate inner panel 10 at the first mounting portion 32 are jointly arranged to form a cavity, thereby improving the structural rigidity of the tailgate structure at the rear wiper motor and the vibration absorber 92.

[0046] In some embodiments, see Figure 5 and Figure 6 The second mounting portion 33 includes a first reinforcement section 331, a second reinforcement section 332 and a third reinforcement section 333 which are sequentially connected along the first direction. The first reinforcement section 331 is connected to the first mounting portion 32, and the third reinforcement section 333 is connected to the third mounting portion 34. The first reinforcement section 331 and the third reinforcement section 333 are both substantially flat-plate-shaped. The first reinforcement section 331, the second reinforcement section 332 and the third reinforcement section 333 together form a U-shaped structure, and the second reinforcement section 332 is connected to the second outer main body section 222. The flat-plate-shaped first reinforcement section 331 and the third reinforcement section 333 can improve the supporting effect of the second mounting portion 33 on the back door outer panel 20, limit the shaking between the back door inner panel 10 and the back door outer panel 20, thereby improving the structural rigidity of the back door structure at the second mounting portion 33, and improving the natural frequency of the back door structure.

[0047] In some embodiments, the second mounting portion 33 is fixedly connected to the second outer body segment 222 by expansion glue. The fixing glue can be provided at multiple areas between the second mounting portion 33 and the second outer body segment 222 to improve the fixing effect.

[0048] In some embodiments, see Figure 2 , the second mounting portion 33 and the second outer main body section 222 are locked by the locking member 40. However, if the locking member 40 is to be installed, a avoidance hole 101 that is directly opposite to the locking member 40 in the second direction needs to be opened on the back door outer panel 20. The operator or the manipulator extends into the mounting cavity through the avoidance hole 101 to install and lock the locking member 40. The opening of the avoidance hole 101 will inevitably reduce the structural rigidity of the back door outer panel 20. In this regard, in this embodiment, the second mounting portion 33 and the second outer main body section 222 can be locked by the locking member 40. Please refer to the embodiment of the present invention. Figure 6 The locking member 40 is used to lock the outer trim panel 93 located on the side of the outer body part 22 facing away from the inner body part 12 to the second outer body section 222, that is, the locking member 40 is the locking member 40 on the back door for connecting the outer trim panel 93 and the back door structure. At this time, the inner body part 12 is provided with an avoidance hole 101 facing the locking member 40 in the second direction to avoid the operator's hand or the manipulator. Compared with the mounting plate 30 on the back door structure in the current related art, the mounting plate 30 in this embodiment is provided with a second mounting portion 33 that can cover the connection area of ​​the locking member 40. In this way, the original locking member 40 on the back door structure in the current related art can be used to fix the mounting plate 30 and the back door inner plate 10. The avoidance hole 101 is also the original avoidance hole 101 on the back door structure in the current related art. It is not necessary to open another avoidance hole 101 on the back door outer plate 20, thereby ensuring the structural rigidity of the back door outer plate 20.

[0049] Optional, see Figure 3 and Figure 4 The second outer main body section 222 is provided with a first connection hole 201, the second reinforcement section 332 is provided with a second connection hole 301, and the locking member 40 is sequentially passed through the first connection hole 201 and the second connection hole 301. The locking member 40 may be a screw.

[0050] It should be noted that, in this embodiment, the second mounting portion 33 and the second outer main body section 222 can be fixedly connected by the locking member 40 and the expansion glue, so as to further improve the connection stability between the mounting plate 30 and the back door inner panel 10. In other embodiments, only the locking member 40 or only the expansion glue can be used between the second mounting portion 33 and the second outer main body section 222, which is not limited here.

[0051] In some embodiments, see Figure 5 and Figure 6 The second outer main body section 222 is roughly flat-plate-shaped, and the second reinforcement section 332 is roughly flat-plate-shaped. The second outer main body section 222 is parallel to the second reinforcement section 332 and fits with each other. In this way, the contact area between the second mounting portion 33 and the second outer main body section 222 is increased, thereby improving the connection stability between the mounting plate 30 and the tailgate outer panel 20, thereby improving the rigidity of the tailgate structure.

[0052] Optional, see Figure 5 and Figure 6 The length of the second reinforcement section 332 in the first direction is equal to the length of the second outer main section 222 in the first direction, so as to maximize the contact area between the mounting plate 30 and the tail door outer panel 20, improve the connection stability between the mounting plate 30 and the tail door outer panel 20, and further enhance the rigidity of the tail door structure.

[0053] Optional, see Figure 5 and Figure 6 The first reinforcement section 331 is perpendicular to the second reinforcement section 332 . The first reinforcement section 331 can provide a greater supporting force at this angle, and it is convenient to process the second mounting portion 33 on the mounting plate 30 .

[0054] The above descriptions are only some specific embodiments of the utility model, and only specifically describe the technical principles of the utility model. These descriptions are only for explaining the principles of the utility model and cannot be interpreted as limiting the protection scope of the utility model in any way. Based on the explanation here, any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model, and other specific implementation methods of the utility model that can be associated with the technicians in this field without creative work, should be included in the protection scope of the utility model.

Claims

1. A back door structure, characterized in that: include: The back door inner plate comprises an inner connecting portion and an inner main body portion which are sequentially connected along a first direction; The back door outer panel comprises an outer connecting portion and an outer main body portion which are sequentially connected along a first direction, wherein the outer connecting portion is connected to the inner connecting portion, and the outer main body portion is spaced apart from the inner main body portion; The mounting plate includes an intermediate connecting portion, a first mounting portion, a second mounting portion and a third mounting portion which are sequentially connected along a first direction, the intermediate connecting portion being connected between the outer connecting portion and the inner connecting portion, the first mounting portion being connected to the inner main body portion and being spaced apart from the outer main body portion, the second mounting portion being in a U-shape arched toward the outer main body portion, the second mounting portion being connected to the outer main body portion and being spaced apart from the inner main body portion, the third mounting portion being connected to the inner main body portion and being spaced apart from the outer main body portion, and the first mounting portion and the inner main body portion being used together to be connected to a rear wiper motor and a vibration absorber located on a side of the inner main body portion facing away from the first mounting portion.

2. The back door structure according to claim 1, characterized in that: The outer main body portion includes a first outer main body segment, a second outer main body segment and a third outer main body segment connected in sequence along a first direction, the first outer main body segment is connected to the outer connecting portion, the first outer main body segment and the third outer main body segment are both arched away from the inner main body portion, and the second mounting portion is connected to the second outer main body segment.

3. The back door structure according to claim 2, characterized in that: The second mounting portion includes a first reinforcement segment, a second reinforcement segment and a third reinforcement segment connected in sequence along the first direction, the first reinforcement segment is connected to the first mounting portion, the third reinforcement segment is connected to the third mounting portion, the first reinforcement segment and the third reinforcement segment are both roughly flat-plate-shaped, the first reinforcement segment, the second reinforcement segment and the third reinforcement segment are jointly arranged to form a U-shaped structure, and the second reinforcement segment is connected to the second outer main body segment.

4. The back door structure according to claim 3, characterized in that: The second mounting portion is fixedly connected to the second outer main body section by means of expansion glue.

5. The back door structure according to claim 3 or 4, characterized in that: The second mounting portion and the second outer main body section are locked by a locking member, and the locking member is used to lock the outer decorative panel located on the side of the outer main body portion facing away from the inner main body portion to the second outer main body section.

6. The back door structure according to claim 5, characterized in that: The inner main body is provided with an avoidance hole which is directly opposite to the locking member in the second direction.

7. The back door structure according to claim 3, characterized in that: The second outer main body section is substantially in the shape of a flat plate, and the second reinforcement section is substantially in the shape of a flat plate and is in close contact with the second outer main body section.

8. The back door structure according to claim 7, characterized in that: A length of the second reinforcement segment in the first direction is equal to a length of the second outer body segment in the first direction.

9. The back door structure according to claim 7, characterized in that: The first reinforcement section is perpendicular to the second reinforcement section.

10. A vehicle, characterized in that: It comprises a back door structure as claimed in any one of claims 1 to 9.

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