A back door assembly and a vehicle

Abstract

The utility model relates to automobile back door technical field especially, and it is a kind of back door assembly and automobile.The back door assembly of the utility model, including back door outer plate, back door trim and tail light, back door trim is connected in back door outer plate by first installation structure, and first positioning structure is equipped between back door trim and back door outer plate, for limiting the relative position of both, tail light is connected in back door outer plate by second installation structure, and second positioning structure is equipped between tail light and back door outer plate, for limiting the relative position of both.The back door assembly of the utility model ensures back door trim and tail light all with back door outer plate as positioning reference by first positioning structure and second positioning structure, for ensuring installation accuracy, so that the gap distribution between back door trim, tail light and back door outer plate is even, and it is favorable for beautiful appearance.

Description

Technical Field

[0001] This utility model relates to the field of automotive tailgate technology, and in particular to a tailgate assembly and an automobile. Background Technology

[0002] Due to limitations in tailgate outer panel molding technology, a tailgate trim panel needs to be added to the tailgate area to meet styling requirements. Typically, the upper part of the tailgate trim panel is fitted with the tailgate outer panel with a clearance fit, while the lower part is fitted with the taillights with a clearance fit. In actual vehicles, this upper and lower clearance fit method makes it difficult to ensure installation precision. Utility Model Content

[0003] The purpose of this utility model is to solve the problem of difficulty in ensuring installation accuracy between the tailgate trim panel, taillight, and tailgate outer panel.

[0004] To address the aforementioned problems, this utility model proposes a tailgate assembly, including a tailgate outer panel, a tailgate trim panel, and a taillight. The tailgate trim panel is connected to the tailgate outer panel via a first mounting structure, and a first positioning structure is provided between the tailgate trim panel and the tailgate outer panel to limit their relative positions. The taillight is connected to the tailgate outer panel via a second mounting structure, and a second positioning structure is provided between the taillight and the tailgate outer panel to limit their relative positions.

[0005] Optionally, the first positioning structure includes a first positioning pin and a first positioning hole. One of the tailgate trim panel and the tailgate outer panel is provided with the first positioning pin, and the other is provided with the first positioning hole. During installation, the first positioning pin passes through the first positioning hole. The second positioning structure includes a second positioning pin and a second positioning hole. One of the taillight and the tailgate outer panel is provided with the second positioning pin, and the other is provided with the second positioning hole. During installation, the second positioning pin passes through the second positioning hole.

[0006] Optionally, one of the taillights and the tailgate trim panel is provided with a third positioning pin, and the other is provided with a third positioning hole; during installation, the third positioning pin is inserted into the third positioning hole to limit the relative position between the taillights and the tailgate trim panel.

[0007] Optionally, the first mounting structure includes a mounting part, a fixing plate, and a first buckle. A portion of the tailgate trim panel protrudes relative to another portion to form the mounting part. The taillight is provided with a fixing plate, which is fixedly connected to the mounting part by the first buckle.

[0008] Optionally, the first buckle includes a first snap-fit ​​portion and a second snap-fit ​​portion. The first buckle is snapped to the mounting portion via the first snap-fit ​​portion and snapped to the fixing plate via the second snap-fit ​​portion.

[0009] Optionally, the second mounting structure includes a second buckle and a second snap-fit ​​hole. One of the tailgate trim panel and the tailgate outer panel is provided with a second buckle, and the other is provided with a second snap-fit ​​hole. The second buckle is snapped into the second snap-fit ​​hole to define the relative position between the tailgate trim panel and the tailgate outer panel.

[0010] The rear door assembly of this utility model also includes fasteners and fixing members. The outer panel of the rear door and the trim panel of the rear door are respectively provided with a first mounting hole for fasteners to pass through and a second mounting hole for fixing members to pass through. The fixing member is provided with a connecting hole for fasteners to pass through. The fixing member is snapped into the second mounting hole. The fasteners pass through the first mounting hole and the connecting hole in sequence and are fixedly connected to the fixing member to define the relative position between the outer panel of the rear door and the trim panel of the rear door.

[0011] Optionally, the tailgate assembly of this utility model also includes a rear windshield, a sealing element is sandwiched between the tailgate trim panel and the rear windshield, and a first buffer element is sandwiched between the tailgate trim panel and the tailgate outer panel.

[0012] Optionally, the taillights are equipped with reinforcing ribs, and a second buffer is sandwiched between the reinforcing ribs and the tailgate trim panel.

[0013] This utility model also proposes an automobile, including the aforementioned tailgate assembly.

[0014] Compared with the prior art, the technical solution of this utility model has the following advantages: The tailgate assembly of this utility model ensures that the tailgate trim panel and the taillight are positioned with the tailgate outer panel as the positioning reference through the first positioning structure and the second positioning structure, so as to ensure the installation accuracy, make the gap between the tailgate trim panel, the taillight and the tailgate outer panel uniformly distributed, and are conducive to aesthetics. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a first-view structural schematic diagram of the rear door assembly of this utility model.

[0017] Figure 2 This is a structural schematic diagram of the rear door assembly of this utility model from a second perspective.

[0018] Figure 3 This is a schematic diagram of the structure of the rear door trim panel and taillight of this utility model.

[0019] Figure 4This is a schematic cross-sectional view of the rear tailgate assembly of this utility model along direction AA.

[0020] Figure 5 This is a partially enlarged schematic diagram of the rear door trim panel and taillights of this utility model.

[0021] Figure 6 This is a BB-direction sectional view of the rear tailgate assembly of this utility model.

[0022] Figure 7 This is a DD-direction sectional view of the rear tailgate assembly of this utility model.

[0023] Figure 8 This is a partial enlarged view of point E on the back door trim panel of this utility model.

[0024] Figure 9 This is a CC-direction cross-sectional view of the rear door assembly of this utility model.

[0025] Figure 10 This is a schematic diagram of the structure of the first buckle of this utility model.

[0026] Figure 11 This is a partially enlarged schematic diagram of point F of the taillight of this utility model.

[0027] In the picture: 1-Back door trim panel; 11-First positioning pin; 12-Second positioning pin; 13-Third positioning pin; 14-Mounting part; 141-Mounting plate; 141a-Snap-fit ​​groove; 142-Side panel; 142a-Mounting groove; 143-Guide part; 15-Second mounting hole; 16-Trimmed panel edge; 2-Outer panel of the rear door; 21-First positioning hole; 23-Upper section of the outer panel; 231-Avoidance groove; 24-Middle section of the outer panel; 25-Lower section of the outer panel; 3-Taillight; 31-Third positioning hole; 32-Fixing plate; 321-First snap-fit ​​hole; 33-Reinforcing rib; 4-First buckle; 41-First snap-fit ​​part; 411-Connecting post; 412-First snap-fit ​​plate; 413-Second snap-fit ​​plate; 42-Second snap-fit ​​part; 421-Hook; 422-Connecting arm; 5-Second buckle; 61-Fasteners; 62-Fixing components; 71 - Rear windshield; 72 - Camera; 81-Seal; 82-First buffer; 83-Second buffer. Detailed Implementation

[0028] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely some, not all, of the embodiments of this utility model. Based on the description of this utility model, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model.

[0029] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connection," "setting," "installation," etc., should be interpreted broadly. For example, "connection" 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 mean that two components are internally connected. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0030] The terms “upper,” “lower,” “left,” “right,” “front,” “back,” “center,” “top,” “bottom,” “inner,” “outer,” “vertical,” “horizontal,” “clockwise,” “counterclockwise,” “axial,” “radial,” and “circumferential” indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of description and simplification, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] The terms “first”, “second”, etc., are used merely to distinguish elements with similar properties, not to indicate or imply relative importance or a specific order.

[0032] The terms “including,” “comprising,” or any other variations thereof are intended to cover non-exclusive inclusion, which includes not only the elements listed but also other elements not expressly listed.

[0033] The terms "an embodiment," "as an example," or "in an example," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which may be included in at least one embodiment or example of this application. These illustrative expressions do not necessarily refer to the same embodiment, nor are they independent or alternative embodiments mutually exclusive with other embodiments. Where there is no conflict, the embodiments and features described in these embodiments can be combined in a suitable manner.

[0034] Please see Figure 1 and Figure 2This utility model provides a tailgate assembly, including a tailgate outer panel 2, a tailgate trim panel 1, a taillight, and a rear windshield 71. The tailgate trim panel 1 is connected to the tailgate outer panel 2 via a first mounting structure, and a first positioning structure is provided between the tailgate trim panel 1 and the tailgate outer panel 2 to limit their relative positions. The taillight 3 is connected to the tailgate outer panel 2 via a second mounting structure, and a second positioning structure is provided between the taillight 3 and the tailgate outer panel 2 to limit their relative positions.

[0035] In some embodiments, the tailgate assembly of this utility model further includes a camera 72. Please refer to... Figure 3 Optionally, the taillights are segmented taillights, that is, there are two taillights, each consisting of a taillight 3. The two taillights 3 are spaced apart along the left and right sides of the car and are located below the tailgate trim panel 1. The camera 72 is located between the two taillights 3.

[0036] In some embodiments, the first positioning structure includes a first positioning pin 11 and a first positioning hole 21. One of the tailgate trim panel 1 and the tailgate outer panel 2 is provided with the first positioning pin 11, and the other is provided with the first positioning hole 21. During installation, the first positioning pin 11 passes through the first positioning hole 21. The second positioning structure includes a second positioning pin 12 and a second positioning hole. One of the taillight 3 and the tailgate outer panel 2 is provided with the second positioning pin 12, and the other is provided with the second positioning hole. During installation, the second positioning pin 12 passes through the second positioning hole. Both the tailgate trim panel 1 and the taillight 3 use the tailgate outer panel 2 as a positioning reference to ensure installation accuracy and make the gaps between the tailgate trim panel 1, the taillight 3, and the tailgate outer panel 2 evenly distributed, which is beneficial to aesthetics. It should be noted that, in another embodiment, the first positioning structure includes a guide post and a guide groove. One of the guide post and the guide groove is provided on the tailgate trim panel 1, and the other is provided on the tailgate outer panel 2, to define the relative position between the tailgate trim panel 1 and the tailgate outer panel 2. Alternatively, the first positioning structure includes at least two magnets with opposite polarities. The at least two magnets are fixed to the rear door trim panel 1 and the rear door outer panel 2 by means of snap-fitting, adhesive bonding, etc. During installation, the at least two magnets cooperate with each other to define the relative positions of the rear door trim panel 1 and the rear door outer panel 2.

[0037] Please combine Figure 4 and Figure 5 In one embodiment, the rear door trim panel 1 is provided with two first positioning pins 11 spaced apart, and the rear door outer panel 2 is provided with two first positioning holes 21 that cooperate with the two first positioning pins 11. One of the two first positioning holes 21 is a circular hole, and the other is an oblong hole. The circular hole provides precise positioning, while the oblong hole facilitates installation. Understandably, the projection of the first positioning pin 11 along its axial direction can also be circular or polygonal, etc. The second positioning structure is roughly the same as the first positioning structure, and will not be described in detail here.

[0038] One of the rear door trim panel 1 and the taillight 3 is provided with a third positioning pin 13, and the other is provided with a third positioning hole 31. The third positioning hole 31 can be a rectangular hole or an oblong hole, which can prevent rotation and enhance stability, thereby improving positioning accuracy. Please refer to Figure 5 and Figure 6 Optionally, the tailgate trim panel 1 is provided with a number of third positioning pins 13. For example, the tailgate trim panel 1 is provided with four third positioning pins 13, and the two taillights 3 are respectively provided with two third positioning holes 31. The third positioning pins 13 are inserted into the third positioning holes 31 to limit the relative position of the tailgate trim panel 1 and the taillights 3 in the direction perpendicular to the axis of the third positioning pins 13. This helps to ensure that the gap between each taillight 3 of the segmented taillight and the surrounding parts is evenly distributed, thereby improving the installation accuracy.

[0039] The first positioning pin 11, the second positioning pin 12, and the third positioning pin 13 can be fixedly connected to the tailgate trim panel 1 by at least one of the following connection methods: snap-fit, adhesive bonding, threaded connection, and fastener 61 connection; or at least one of the first positioning pin 11, the second positioning pin 12, and the third positioning pin 13 can be integrally formed with the tailgate trim panel 1.

[0040] In some embodiments, the tailgate trim panel 1 is fixedly connected to the tailgate outer panel 2 by at least one connection method, namely fastener 61 and snap-fit, and the taillight 3 is fixedly connected to the tailgate trim panel 1 by snap-fit ​​and fixed to the tailgate outer panel 2 by the tailgate trim panel 1.

[0041] Please combine Figure 7 One of the tailgate trim panel 1 and the taillight 3 is provided with a first clip 4, and the other is provided with a first snap-fit ​​hole 321. Optionally, the first clip 4 is fixed to the tailgate trim panel 1 by snap-fit, fastener 61 connection, or threaded connection. There are at least two first clips 4, spaced apart on the tailgate trim panel 1. This helps ensure precise matching between the taillight 3 and the tailgate trim panel 1 during installation, improving the appearance quality. Figure 3 As shown, optionally, four first buckles 4 are provided at intervals along the width direction of the vehicle on the tailgate panel 1 to improve the stability and reliability of the connection, making the connection between the taillight 3 and the tailgate panel 1 more secure, thereby preventing the taillight 3 from loosening or falling off due to vibrations generated during vehicle operation.

[0042] Please see Figure 5 and Figure 8In one embodiment, the tailgate trim panel 1 and the taillight 3 are respectively provided with a mounting portion 14 and a fixing plate 32. Optionally, the taillight 3 protrudes upward from its surface generally along the height direction of the vehicle to form the fixing plate 32, or the fixing plate 32 is fixed to the taillight 3 by means of fastener 61 or adhesive bonding, etc. The fixing plate 32 is provided with the aforementioned first snap-fit ​​hole 321. The mounting portion 14 is generally rectangular shell-shaped or trapezoidal shell-shaped, and the portion of the tailgate trim panel 1 corresponding to the fixing plate 32 protrudes towards the fixing plate 32 relative to its other portion to form the mounting portion 14. During installation, the first buckle 4 snaps into the mounting portion 14 and passes through the first snap-fit ​​hole 321 to snap into the fixing plate 32.

[0043] Please see Figure 7 and Figure 10 In one embodiment, the first latch 4 includes a first latching portion 41 and a second latching portion 42, the first latching portion 41 and the second latching portion 42 being fixedly connected to the mounting portion 14 and the fixing plate 32 respectively (e.g., Figure 5 (As shown). Specifically, the first snap-fit ​​part 41 includes a columnar connecting post 411, and the two opposite ends of the connecting post 411 are respectively provided with a first snap-fit ​​plate 412 and a second snap-fit ​​plate 413. Optionally, the connecting post 411 protrudes from its circumferential surface to form two spaced-apart first snap-fit ​​plates 412 and second snap-fit ​​plates 413.

[0044] like Figure 10 As shown in a specific example provided in this application, the second latching portion 42 includes a hook 421 and a connecting arm 422. Specifically, the connecting post 411 of the first latching portion 41 protrudes from its end face to form the connecting arm 422, and the connecting arm 422 protrudes from its surface to form the hook 421. Optionally, the surface of the hook 421 adopts a rounded transition, that is, the thickness of the hook 421 gradually decreases from the end near the connecting arm 422 to the end away from the connecting arm 422. The number of second latching portions 42 can be one or more, for example, four second latching portions 42, which can improve the connection stability and reliability. In addition, during installation and disassembly, the rounded transition of the hook 421 and the provision of multiple second latching portions 42 help prevent the taillight 3 from cracking due to stress concentration.

[0045] Installation section 14 (e.g.) Figure 8 (As shown) includes a receiving cavity formed by a mounting plate 141 and a side plate 142 for accommodating a first latch 4. The side plate 142 has a mounting groove 142a for the first latch 4 to pass into the receiving cavity. The mounting plate 141 has a snap-fit ​​groove 141a communicating with the receiving cavity. The mounting groove 142a and the snap-fit ​​groove 141a are interconnected. The connecting post 411 of the first snap-fit ​​portion 41 passes through the snap-fit ​​groove 141a. When the first latch is installed on the mounting portion 14, the first snap-fit ​​plate 412 and the second snap-fit ​​plate 413 are located inside and outside the receiving cavity, respectively.

[0046] Optionally, the mounting portion 14 of the back door trim panel 1 protrudes from the inner surface of the snap-fit ​​groove 141a to form a guide portion 143. Specifically, the guide portion 143 includes a top surface and a first guide surface and a second guide surface disposed on opposite sides of the top surface. Both the first guide surface and the second guide surface are inclined relative to the top surface. The first guide surface and the second guide surface are respectively used to guide the first buckle 4 to slide into or out of the snap-fit ​​groove 141a during installation and disassembly, thereby facilitating installation.

[0047] During installation, the second snap-fit ​​plate 413 of the first snap-fit ​​part 41 passes through the mounting groove 142a and slides into the snap-fit ​​groove 141a along the guide part 143. Subsequently, the connecting post 411 of the first snap-fit ​​part 41 passes through the snap-fit ​​groove 141a. At this time, the first snap-fit ​​plate 412 and the second snap-fit ​​plate 413 are respectively located on opposite sides of the mounting plate 141, so that the first snap-fit ​​part 41 cooperates with the mounting plate 141 to realize the functions of limiting and snapping.

[0048] In some embodiments, one of the rear door trim panel 1 and the rear door outer panel 2 is provided with a second buckle 5, and the other is provided with a second snap-fit ​​hole. The second buckle 5 snaps into the second snap-fit ​​hole to define the relative position between the rear door trim panel 1 and the rear door outer panel 2. Please refer to [link to relevant documentation]. Figure 5 Optionally, the tailgate trim panel 1 is provided with a plurality of second clips 5 spaced apart along the width direction of the vehicle, and the second clips 5 are located on the upper part of the tailgate trim panel 1, that is, in the area of ​​the tailgate trim panel 1 near the rear windshield 71. The spaced arrangement of the multiple second clips 5 helps to ensure the consistency of the gap between the upper part of the tailgate trim panel 1 and the rear windshield 71, thereby ensuring installation accuracy. The structure and arrangement of the second clips 5 are roughly the same as those of the first clips 4, and will not be described again here.

[0049] Please see Figure 9 In one embodiment, the rear door assembly of this utility model further includes a fastener 61 and a fixing member 62. The outer rear door panel 2 and the rear door trim panel 1 are respectively provided with a first mounting hole and a second mounting hole 15, which are used for fastener 61 and fixing member 62 to pass through. The structure of the fixing member 62 is roughly the same as that of the first snap-fit ​​portion 41 of the first buckle 4, and will not be described in detail here. Optionally, the fixing member 62 is pre-inserted into the second mounting hole 15 of the rear door trim panel 1 and snaps into the rear door trim panel 1. In this embodiment, the fastener 61 is a bolt, and the fixing member 62 is provided with a connecting hole for the bolt to pass through. The inner surface of the connecting hole is provided with an internal thread. The bolt passes through the first mounting hole and the connecting hole in sequence and is threadedly connected to the fixing member 62 to limit the relative position between the outer rear door panel 2 and the rear door trim panel 1, thereby improving the stability and reliability of the connection.

[0050] In some embodiments, the tailgate outer panel 2 includes an upper outer panel 23, a middle outer panel 24, and a lower outer panel 25. The upper outer panel 23 and the lower outer panel 25 are respectively fixed to opposite sides of the middle outer panel 24 along the height direction of the vehicle for easy installation. Optionally, the upper part of the middle outer panel 24 overlaps with the lower part of the upper outer panel 23, and the lower part of the middle outer panel 24 overlaps with the upper part of the lower outer panel 25. It is understood that the middle outer panel 24 can be fixedly connected to the upper outer panel 23 and the lower outer panel 25 respectively by welding, riveting, fastener 61 connection, or integral connection.

[0051] Please continue reading. Figure 9 In one embodiment, the tailgate trim panel 1 includes a trim panel fold 16, which is located on the side of the tailgate trim panel 1 near the rear windshield 71. In this embodiment, the portion of the upper section 23 of the outer panel near the rear windshield 71 is recessed relative to the other portion of the trim panel away from the trim panel fold 16 to form a clearance groove 231 for avoiding the trim panel fold 16. During installation, the trim panel fold 16 extends into the clearance groove 231, and the end of the trim panel fold 16 facing the front of the vehicle is located on the front side of the lower end of the rear windshield 71, improving waterproof performance and enhancing aesthetics.

[0052] In some embodiments, a seal 81 is provided between the trim panel fold 16 and the rear windshield 71. The seal 81 can be made of a rubber strip or sealant. The rubber strip fills the gap between the rear windshield 71 and the trim panel fold 16 to achieve a sealing effect and firmly fix the rear windshield 71 to a preset position. When the vehicle is in motion, the rubber strip prevents the rear windshield 71 from shifting due to vibration or other reasons and provides a buffer for the rear windshield 71, preventing the rear windshield 71 from contacting the tailgate trim panel 1, thereby reducing noise and improving comfort.

[0053] Optionally, a first buffer member 82 is provided between the trim panel edge 16 and the upper part 23 of the outer panel of the tailgate outer panel 2. The first buffer member 82 can be made of materials such as foam, felt, or rubber. During vehicle operation, by clamping the first buffer member 82 between the trim panel edge 16 and the upper part 23 of the outer panel, contact between the tailgate trim panel 1 and the tailgate outer panel 2 can be avoided, thereby preventing abnormal noise and improving the stability of the connection. Optionally, the first buffer member 82 is pre-fixed to the lower surface of the trim panel edge 16 by means of adhesive bonding or fastener 61 connection, thereby facilitating installation.

[0054] In one embodiment, a second buffer 83 is sandwiched between the taillight 3 and the tailgate trim panel 1. The second buffer 83 is sheet-shaped and made of materials such as felt, foam, or rubber. Please refer to [link to relevant documentation]. Figure 11Specifically, the taillight 3 is equipped with a reinforcing rib 33, which helps to improve structural strength. The second buffer 83 is sandwiched between the reinforcing rib 33 and the tailgate trim panel 1. During vehicle operation, the second buffer 83 can prevent collisions and friction between the reinforcing rib 33 of the taillight 3 and the tailgate trim panel 1, improve the stability of the connection, and prevent abnormal noises.

[0055] This utility model also proposes an automobile, including the aforementioned tailgate assembly.

[0056] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.

Claims

1. A tailgate assembly, characterized in that: The device includes a tailgate outer panel (2), a tailgate trim panel (1), and a taillight (3). The tailgate trim panel (1) is connected to the tailgate outer panel (2) through a first mounting structure, and a first positioning structure is provided between the tailgate trim panel (1) and the tailgate outer panel (2) to limit their relative positions. The taillight (3) is connected to the tailgate outer panel (2) through a second mounting structure, and a second positioning structure is provided between the taillight (3) and the tailgate outer panel (2) to limit their relative positions.

2. The tailgate assembly according to claim 1, characterized in that: The first positioning structure includes a first positioning pin (11) and a first positioning hole (21). One of the tailgate trim panel (1) and the tailgate outer panel (2) is provided with the first positioning pin (11), and the other is provided with the first positioning hole (21). The second positioning structure includes a second positioning pin (12) and a second positioning hole. One of the taillight (3) and the tailgate outer panel (2) is provided with the second positioning pin (12), and the other is provided with the second positioning hole. During installation, the first positioning pin (11) passes through the first positioning hole (21), and the second positioning pin (12) passes through the second positioning hole.

3. The tailgate assembly according to claim 1, characterized in that: The taillight (3) and the tailgate trim panel (1) are provided with a third positioning pin (13) and a third positioning hole (31). During installation, the third positioning pin (13) passes through the third positioning hole (31) to define the relative position between the taillight (3) and the rear door trim panel (1).

4. The tailgate assembly according to claim 1, characterized in that: The first mounting structure includes a mounting part (14), a fixing plate (32) and a first buckle (4). A portion of the rear door trim panel (1) protrudes from the other portion to form the mounting part (14). The taillight (3) is provided with the fixing plate (32). The fixing plate (32) is fixedly connected to the mounting part (14) by the first buckle (4).

5. The tailgate assembly according to claim 4, characterized in that: The first buckle (4) includes a first snap-fit ​​part (41) and a second snap-fit ​​part (42). The first buckle (4) is snapped to the mounting part (14) through the first snap-fit ​​part (41) and snapped to the fixing plate (32) through the second snap-fit ​​part (42).

6. The tailgate assembly according to claim 1, characterized in that: The second mounting structure includes a second buckle (5) and a second snap-fit ​​hole. One of the back door trim panel (1) and the back door outer panel (2) is provided with the second buckle (5), and the other is provided with the second snap-fit ​​hole. The second buckle (5) is snapped into the second snap-fit ​​hole to limit the relative position between the back door trim panel (1) and the back door outer panel (2).

7. The tailgate assembly according to claim 1, characterized in that: It also includes fasteners (61) and fasteners (62). The outer panel (2) of the back door and the trim panel (1) of the back door are respectively provided with a first mounting hole for the fasteners (61) to pass through and a second mounting hole (15) for the fasteners (62) to pass through. The fasteners (62) are provided with a connecting hole for the fasteners (61) to pass through. The fasteners (62) are snapped into the second mounting hole (15). The fasteners (61) pass through the first mounting hole and the connecting hole in sequence and are fixedly connected to the fasteners (62) to define the relative position between the outer panel (2) of the back door and the trim panel (1).

8. The tailgate assembly according to claim 1, characterized in that: It also includes a rear windshield (71), a sealing element (81) is sandwiched between the tailgate trim panel (1) and the rear windshield (71), and a first buffer element (82) is sandwiched between the tailgate trim panel (1) and the tailgate outer panel (2).

9. The tailgate assembly according to claim 1, characterized in that: A second buffer (83) is sandwiched between the taillight (3) and the tailgate trim panel (1).

10. A car, characterized in that: Includes the rear tailgate assembly as described in any one of claims 1-9.

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