Tail apron board assembly, vehicle rear structure and vehicle

Abstract

The utility model provides a tail apron board assembly, a vehicle rear structure and a vehicle. The tail skirt plate assembly comprises a tail skirt inner plate, a tail skirt outer plate, a back door lock pin fixing plate and a stand column inner plate; at least part of the stand column inner plate is attached to the surface of the tail skirt inner plate, a first cavity is defined by at least part of the stand column inner plate, the tail skirt inner plate and the back door lock pin fixing plate, and a second cavity is defined by the side, away from the first cavity, of the back door lock pin fixing plate and the tail skirt outer plate. At least two of the tail skirt inner plate, the tail skirt outer plate, the back door lock pin fixing plate and the stand column inner plate are connected in a riveted mode. The cavity structure is jointly defined by the stand column inner plate, the tail skirt inner plate, the tail skirt outer plate and the back door lock pin fixing plate, parts are connected in a riveting mode, the structural strength and rigidity are improved, and the safety of a whole vehicle is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle components, in particular to a tail skirt assembly, a vehicle rear structure and a vehicle. Background Art

[0002] As an important component of the vehicle's rear structure, the vehicle's rear skirt assembly plays a vital role in the bending stiffness and torsional stiffness of the entire vehicle. Therefore, how to improve the connection strength of the rear skirt assembly and thereby ensure the stability of the vehicle body structure is of great significance.

[0003] In the related art, the tail skirt assembly is composed of a plurality of stamped steel parts, which are welded to each other to form the tail skirt assembly, and then welded to the vehicle body by overall assembly.

[0004] In the related art, residual stress is generated during the cooling process of welding, which causes deformation of the material around the weld, affects the welding strength, and further affects the structural strength of the tail skirt assembly. Utility Model Content

[0005] In view of the above problems, embodiments of the present invention provide a tail skirt assembly, a vehicle rear structure and a vehicle to solve the problem of poor structural strength of the tail skirt assembly in the related art.

[0006] The embodiment of the utility model provides a tail skirt assembly, including a tail skirt inner plate, a tail skirt outer plate, a back door lock pin fixing plate and a pillar inner plate;

[0007] At least a portion of the pillar inner panel is attached to the surface of the tail skirt inner panel, at least a portion of the pillar inner panel and the tail skirt inner panel are surrounded by the tail door lock pin fixing plate to form a first cavity, a side of the tail door lock pin fixing plate facing away from the first cavity is surrounded by the tail skirt outer panel to form a second cavity, and at least two of the tail skirt inner panel, the tail skirt outer panel, the tail door lock pin fixing plate and the pillar inner panel are riveted together.

[0008] Optionally, the tail skirt assembly further includes a first reinforcement member;

[0009] The first reinforcement is riveted to the bottom of the tail skirt outer panel along the gravity direction, and a fastener is provided on the first reinforcement, and the fastener is used to be connected to the rear bumper.

[0010] Optionally, a positioning hole is provided on the outer panel of the tail skirt.

[0011] Optionally, a locking hole and a positioning protrusion are provided on the inner plate of the tail skirt, the locking hole passes through the inner plate of the tail skirt along the thickness direction, the positioning protrusion is close to the locking hole, and a reinforcing rib is also provided on the inner plate of the tail skirt.

[0012] Optionally, the tail skirt assembly is an aluminum tail skirt assembly.

[0013] The embodiment of the utility model further provides a vehicle rear structure, comprising a rear floor and any one of the above-mentioned tail skirt assembly;

[0014] The rear floor is riveted to the bottom of the tail skirt outer plate along the gravity direction.

[0015] Optionally, the vehicle rear structure further includes a first anti-collision beam, a second anti-collision beam and a reinforcement beam;

[0016] The first anti-collision beam is connected to one side of the rear floor, an end of the first anti-collision beam is connected to one of the pillar inner panels, the second anti-collision beam is connected to the other side of the rear floor, an end of the second anti-collision beam is connected to another pillar inner panel, the reinforcement beam is arranged on the first surface of the rear floor, the reinforcement beam is connected between the first anti-collision beam and the second anti-collision beam, and an extension direction of the reinforcement beam is perpendicular to an extension direction of the first anti-collision beam and the second anti-collision beam.

[0017] Optionally, the vehicle rear structure further comprises at least one first reinforcement plate;

[0018] The first reinforcing plate is connected to the first anti-collision beam and / or the second anti-collision beam on a side away from the rear floor, the first reinforcing plate is connected to the pillar inner plate, and the first reinforcing plate is used to connect the side panel assembly.

[0019] Optionally, the vehicle rear structure further includes a towing hook;

[0020] The support hook is arranged on the first anti-collision beam or the second anti-collision beam, the support hook is close to the second surface of the rear floor, and the support hook is used to support the wire harness.

[0021] An embodiment of the utility model further provides a vehicle, comprising any one of the vehicle rear structures described above.

[0022] The tail skirt assembly provided by the embodiment of the utility model has the following advantages:

[0023] First, compared with the related art, the inner plate of the pillar and the inner plate of the tail skirt are partially fitted, which increases the connection area. The connection between the inner plate of the pillar and the inner plate of the tail skirt is surrounded by the back door lock pin fixing plate to form a first cavity. At the same time, the back door lock pin fixing plate and the outer plate of the tail skirt are surrounded by the second cavity. The cavity structure makes the connection between the inner plate of the tail skirt, the outer plate of the tail skirt, the back door lock pin fixing plate and the inner plate of the pillar stable. In addition, the inner plate of the tail skirt, the outer plate of the tail skirt, the back door lock pin fixing plate and the inner plate of the pillar are assembled into a whole through riveting technology. Compared with welding technology, the structural strength and rigidity are improved. At the same time, the errors caused by multi-process welding deformation and tolerance accumulation are eliminated, and the precision of parts and connection consistency are improved.

[0024] Secondly, the positioning holes opened on the outer panel of the tail skirt are used to position the clamps welded between the rear structure of the vehicle and the outer panel of the side panel to ensure reliable positioning of the clamps and unified reference. They can also be used for pre-positioning to reduce installation errors.

[0025] Third, the lock hole of the inner plate of the tail skirt is surrounded by positioning protrusions, which are immediately printed to facilitate the installer to find the installation position in a timely and accurate manner, improve the installation consistency of the tailgate lock pin, and ensure the stability of the tailgate opening and closing force. In addition, the inner plate of the tail skirt is provided with reinforcing ribs to enhance the installation strength of the tailgate lock.

[0026] Fourth, the tail skirt assembly is made of aluminum, which effectively reduces the weight of the vehicle and achieves the goal of lightweighting.

[0027] The vehicle rear structure provided by the embodiment of the utility model has the following advantages:

[0028] First, the rear section of the rear floor is riveted to the tail skirt assembly, which improves the structural strength and rigidity.

[0029] Secondly, the first anti-collision beam and the second anti-collision beam are connected on both sides of the rear floor, the reinforcement beam is connected between the first anti-collision beam and the second anti-collision beam, and the reinforcement beam and the first anti-collision beam and the second anti-collision beam form an I-shaped reinforcement structure, which improves the anti-collision strength on both sides of the rear floor and the bearing capacity of the rear floor.

[0030] Third, a support hook is added to the lower part of the anti-collision beam to support the high-voltage wiring harness and place the wiring harness safely.

[0031] Fourth, the second reinforcement plate is arranged on the lower surface of the rear floor to provide an installation and fixing point for the battery pack, effectively connecting the battery pack and the rear floor to prevent the battery pack from shaking. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0033] Figure 1It is a schematic diagram of the rear structure of a vehicle provided by an embodiment of the utility model;

[0034] Figure 2 It is an exploded view of the rear structure of a vehicle provided by an embodiment of the utility model;

[0035] Figure 3 This utility model embodiment Figure 1 Schematic diagram along direction A;

[0036] Figure 4 This utility model embodiment Figure 1 Schematic diagram along direction B;

[0037] Figure 5 This utility model embodiment Figure 4 Schematic diagram along CC direction;

[0038] Figure 6 This utility model embodiment Figure 4 Schematic diagram along the DD direction.

[0039] Description of reference numerals:

[0040] 1-pillar inner plate, 11-weight reduction hole, 2-tail skirt inner plate, 21-lock hole, 22-positioning protrusion, 23-reinforcement rib, 3-back door lock pin fixing plate, 31-first cavity, 32-second cavity, 4-tail skirt outer plate, 41-positioning hole, 41a-main positioning hole, 41b-secondary positioning hole, 5-first reinforcement, 51-fastener, 6-rear floor, 71-first anti-collision beam, 711-support hook, 72-second anti-collision beam, 73-reinforcement beam, 8-first reinforcement plate, 9-second reinforcement plate. DETAILED DESCRIPTION

[0041] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the tail skirt assembly, the rear structure of the vehicle and the vehicle provided by the present invention are further described in detail below in combination with the accompanying drawings and specific implementation methods.

[0042] Reference Figures 1 to 4 The embodiment of the utility model provides a tail skirt assembly, including a tail skirt inner panel 2, a tail skirt outer panel 4, a back door lock pin fixing plate 3 and a pillar inner panel 1; at least a portion of the pillar inner panel 1 is attached to the surface of the tail skirt inner panel 2, at least a portion of the pillar inner panel 1 and the tail skirt inner panel 2, and the back door lock pin fixing plate 3 are surrounded to form a first cavity 31, and the side of the back door lock pin fixing plate 3 away from the first cavity 31 is surrounded to form a second cavity 32 with the tail skirt outer panel 4, and at least two of the tail skirt inner panel 2, the tail skirt outer panel 4, the back door lock pin fixing plate 3 and the pillar inner panel 1 are riveted together.

[0043] Specifically, if Figure 1 As shown, the tail skirt assembly includes a tail skirt inner plate 2, a tail skirt outer plate 4, a back door lock pin fixing plate 3 and a pillar inner plate 1. The tail skirt inner plate 2 faces the inside of the vehicle, and the tail skirt outer plate 4 faces the outside of the vehicle. The back door lock pin fixing plate 3 is a back door lock pin reinforcement plate, which is used to install a nut. The position of the nut corresponds to the position of the lock hole 21 on the tail skirt inner plate 2, and is used to penetrate and fix the back door lock pin. The back door lock pin fixing plate 3 can strengthen the fixing strength of the lock pin. The pillar inner plate 1 includes a C-pillar inner plate or a D-pillar inner plate, depending on the vehicle model. The pillar inner plate 1 of this embodiment is a D-pillar inner plate, that is, a connecting column between the roof of the rear part of the vehicle body and the vehicle floor. This embodiment takes the lower section of the pillar inner panel 1 as an example. The pillar inner panel 1 is provided in two pieces, which are located on both sides of the vehicle. Along the Y direction, each side of the tail skirt inner panel 2 is riveted to a pillar inner panel 1, and part of the pillar inner panel 1 is attached to the outer surface of the tail skirt inner panel 2, that is, by expanding the contact area between the pillar inner panel 1 and the tail skirt inner panel 2, the connection strength is improved. It should be noted that Figure 5 In order to clearly show the structure of the pillar inner plate 1 and the tail skirt inner plate 2, a certain gap is left between the two. In the actual embodiment, the two are attached to each other. In the figure, a riveted structure is shown between the pillar inner plate 1 and the tail skirt inner plate 2, which is used to connect the pillar inner plate 1 and the tail skirt inner plate 2.

[0044] like Figure 5 As shown in the cross-sectional diagram, at the two side edges of the tail skirt inner plate 2 and the tail skirt outer plate 4 along the Y direction, the part of the pillar inner plate 1 attached to the tail skirt inner plate 2 and the back door lock pin fixing plate 3 encloses a first cavity 31, and the back door lock pin fixing plate 3 and the tail skirt outer plate 4 enclose a second cavity 32. When subjected to impact force, the cavity structure provides a certain buffer space to avoid excessive displacement and deformation between parts, which is conducive to improving structural strength and stability. Figure 6As shown in the cross-sectional schematic diagram, in the middle of the tail skirt inner plate 2 and the tail skirt outer plate 4 along the Y direction, a first cavity 31 is formed between the tail skirt inner plate 2 and the back door lock pin fixing plate 3, and a second cavity 32 is formed between the back door lock pin fixing plate 3 and the tail skirt outer plate 4. Therefore, compared with the related art in which only the tail skirt inner plate 2, the tail skirt outer plate 4, and the back door lock pin fixing plate 3 are formed to form a cavity structure, the pillar inner plate 1 of this embodiment is formed together with the above three to form a cavity structure, which effectively improves the strength and rigidity of the pillar inner plate 1 and the tail skirt plate assembly. Along the Z direction, the upper and lower sides of the cavity structure are the connection positions between the parts, and at least two of the tail skirt inner plate 2, the tail skirt outer plate 4, the back door lock pin fixing plate 3 and the pillar inner plate 1 are riveted and connected at this position. This example adopts the process of riveting the tail skirt inner plate 2, the tail skirt outer plate 4, the back door lock pin fixing plate 3 and the pillar inner plate 1 at the same time. On the left side along the Y direction, the tail skirt inner plate 2, the tail skirt outer plate 4, the back door lock pin fixing plate 3 are riveted to the left pillar inner plate 1, and on the right side along the Y direction, the tail skirt inner plate 2, the tail skirt outer plate 4, the back door lock pin fixing plate 3 are riveted to the right pillar inner plate 1. Compared with the related technology of welding connection, the riveted connection does not produce the risk of weld deformation, and improves the structural strength and rigidity. At the same time, it eliminates the errors caused by multi-process welding deformation and tolerance accumulation, improves the accuracy of parts and connection consistency, and the accuracy of holes or surfaces can be improved by 0.2mm as a whole, improving the gap error of interior decoration installation and improving the appearance quality.

[0045] In addition, if Figure 1 As shown, a weight-reducing hole 11 is provided on the pillar inner plate 1 to reduce the weight of the parts. The thickness of the pillar inner plate 1 is 1 mm to 1.2 mm, and the thickness of the tail skirt inner plate 2 is 1 mm to 1.2 mm to ensure structural strength.

[0046] The rear skirt panel assembly provided in the embodiment of the utility model comprises a pillar inner panel 1, a rear skirt inner panel 2, a rear skirt outer panel 4 and a tailgate lock pin fixing plate 3 which are jointly arranged to form a cavity structure, and the parts are connected by riveting, thereby improving the structural strength and rigidity and enhancing the safety of the entire vehicle.

[0047] Optionally, refer to Figure 1 and Figure 3 The tail skirt assembly also includes a first reinforcement 5; the first reinforcement 5 is riveted to the bottom of the tail skirt outer panel 4 along the gravity direction, and a fastener 51 is provided on the first reinforcement 5, and the fastener 51 is used to connect with the rear bumper.

[0048] Specifically, if Figure 1 and Figure 3 As shown, the first reinforcement member 5, i.e., the reinforcement bracket, is riveted to the bottom of the tail skirt outer panel 4. In this embodiment, two first reinforcement members 5 are provided, which are located on both sides of the tail skirt outer panel 4 along the Y direction. The fastener 51 is a pull rivet nut, which is used to connect with the rear bumper to effectively fix and adjust the rear bumper.

[0049] Optionally, refer to Figure 4 A positioning hole 41 is provided on the tail skirt outer plate 4.

[0050] Specifically, if Figure 4 As shown, positioning holes 41 are provided on both sides of the tail skirt outer panel 4 along the Y direction, and the positioning holes 41 are divided into a main positioning hole 41a and a secondary positioning hole 41b. The clamp used to position the welding between the rear structure of the vehicle and the side panel ensures reliable positioning of the clamp and a unified reference. It can also be used for pre-positioning to reduce installation errors.

[0051] Optionally, refer to Figure 1 A locking hole 21 and a positioning protrusion 22 are provided on the tail skirt inner plate 2 . The locking hole 21 passes through the tail skirt inner plate 2 along the thickness direction, and the positioning protrusion 22 is close to the locking hole 21 .

[0052] Specifically, if Figure 1 As shown, a through lock hole 21 is provided on the tail skirt inner plate 2, and the lock hole 21 corresponds to the nut installation position on the back door lock pin fixing plate 3. The positioning protrusion 22 is immediately printed. In this embodiment, there are four positioning protrusions 22, which are respectively located on the upper side, lower side, left side and right side of the lock hole 21, so that the operator can find the position of the lock hole 21 and the lock pin installation position in time and accurately when installing the back door lock pin, thereby improving the installation consistency of the back door lock pin. At the same time, the stability of the back door opening and closing force is ensured.

[0053] Optionally, refer to Figure 1 The tail skirt inner plate 2 is also provided with reinforcing ribs 23 .

[0054] Specifically, if Figure 1 As shown, the tail skirt inner plate 2 is provided with reinforcing ribs 23 to improve the structural strength of the tail skirt inner plate 2. Part of the reinforcing ribs 23 is close to the lock hole 21, which strengthens the installation strength of the back door lock.

[0055] Optionally, the tail skirt assembly is an aluminum tail skirt assembly.

[0056] Specifically, each part of the rear skirt assembly is made of aluminum, which ensures structural strength while reducing the weight of the vehicle and achieving a lightweight body effect.

[0057] Reference Figure 1 and Figure 2 The embodiment of the utility model further provides a vehicle rear structure, including a rear floor 6 and the tail skirt assembly described in any one of the above embodiments; the rear floor 6 is riveted to the bottom of the tail skirt outer panel 4 along the gravity direction.

[0058] Specifically, if Figure 1 and Figure 2As shown, the rear vehicle structure includes a rear floor 6 and a tail skirt assembly. The rear section of the rear floor 6 is riveted to the bottom of the outer tail skirt panel 4. During the assembly process, first, each part of the tail skirt assembly, including the inner tail skirt panel 2, the outer tail skirt panel 4, the back door lock pin fixing plate 3, and the inner pillar panel 1, is connected by riveting, and some parts of the rear section of the rear floor 6 are also connected by riveting. Subsequently, the rear section of the rear floor 6 and the tail skirt assembly are riveted together, avoiding errors caused by welding deformation and tolerance accumulation in multiple processes, and improving the part accuracy and connection consistency.

[0059] Optionally, referring to Figure 1 and Figure 2 , the rear vehicle structure further includes a first anti-collision beam 71, a second anti-collision beam 72, and a reinforcing beam 73. The first anti-collision beam 71 is connected to one side of the rear floor 6, and the end of the first anti-collision beam 71 is connected to one of the inner pillar panels 1. The second anti-collision beam 72 is connected to the other side of the rear floor 6, and the end of the second anti-collision beam 72 is connected to the other inner pillar panel 1. The reinforcing beam 73 is disposed on the first surface of the rear floor 6, and the reinforcing beam 73 is connected between the first anti-collision beam 71 and the second anti-collision beam 72. The extending direction of the reinforcing beam 73 is perpendicular to the extending directions of the first anti-collision beam 71 and the second anti-collision beam 72.

[0060] Specifically, as Figure 1 and Figure 2 shown, a first anti-collision beam 71 is riveted to one side of the rear floor 6, and a second anti-collision beam 72 is riveted to the other side. The cross-sections of the first anti-collision beam 71 and the second anti-collision beam 72 are in the shape of a "day character", which can improve the structural strength and impact resistance. The front end of the first anti-collision beam 71 is connected to the inner pillar panel 1 on one side, and the front end of the second anti-collision beam 72 is connected to the inner pillar panel 1 on the other side. Therefore, the anti-collision beams communicate and connect the inner pillar panel 1 and the rear floor 6, effectively dispersing the impact force. The reinforcing beam 73 is riveted to the first surface of the rear floor 6, that is, the upper surface of the rear floor 6, and the reinforcing beam 73 is connected between the first anti-collision beam 71 and the second anti-collision beam 72. In this embodiment, the length of the reinforcing beam 73 is 800 mm to 900 mm, the width is 100 to 110 mm, and the thickness is 2.0 mm to 2.5 mm, ensuring the structural strength and bearing capacity of the reinforcing beam 73. When an impact force is applied to any one of the anti-collision beams, the reinforcing beam 73 can effectively transfer and disperse the force. The reinforcing beam 73 extends along the Y direction, and the first anti-collision beam 71 and the second anti-collision beam 72 both extend along the X direction, that is, the reinforcing beam 73 and the first anti-collision beam 71 and the second anti-collision beam 72 form a "worker" shaped reinforcement structure, improving the anti-collision strength on both sides of the rear floor and the bearing capacity of the rear floor, effectively ensuring the safety of the vehicle body structure.

[0061] Optionally, referring to Figure 1 and Figure 2The vehicle rear structure also includes at least one first reinforcing plate 8; the first reinforcing plate 8 is connected to the first anti-collision beam 71 and / or the second anti-collision beam 72 on the side away from the rear floor 6, the first reinforcing plate 8 is connected to the pillar inner panel 1, and the first reinforcing plate 8 is used to connect the side panel assembly.

[0062] Specifically, if Figure 1 and Figure 2 As shown, there is at least one first reinforcing plate 8. In this embodiment, two first reinforcing plates 8 are provided. One of the first reinforcing plates 8 is connected to the outer side of the first anti-collision beam 71, and the other first reinforcing plate 8 is connected to the outer side of the second anti-collision beam 72. The first reinforcing plate 8 is used to connect the side enclosure assembly, and the connection method between the first reinforcing plate 8 and the side enclosure assembly is welding. That is, the first reinforcing plate 8 connects the pillar inner plate 1 and the rear section of the rear floor 6, forming a complete vehicle rear structure.

[0063] Optionally, refer to Figure 1 The rear structure of the vehicle further includes a hook 711; the hook 711 is disposed on the first anti-collision beam 71 or the second anti-collision beam 72, the hook 711 is close to the second surface of the rear floor 6, and the hook 711 is used to support the wiring harness.

[0064] Specifically, if Figure 1 As shown, a support hook 711 is provided at the lower portion of the first anti-collision beam 71 or the second anti-collision beam 72 for supporting the high-voltage wire harness and thereby safely placing the wire harness.

[0065] Optionally, refer to Figure 3 The vehicle rear structure also includes at least one second reinforcing plate 9; the second reinforcing plate 9 is arranged on the second surface of the rear floor 6, and the second reinforcing plate 9 is used to install the battery pack.

[0066] Specifically, if Figure 3 As shown, there is at least one second reinforcing plate 9, and in this embodiment, two second reinforcing plates 9 are arranged on both sides of the lower surface of the rear floor 6. The second reinforcing plate 9 provides a mounting and fixing point for the battery pack, effectively connecting the battery pack and the rear floor to prevent the battery pack from shaking.

[0067] An embodiment of the utility model further provides a vehicle, comprising the vehicle rear structure described in any one of the above embodiments, which improves the structural strength and rigidity, meets safety requirements, and realizes lightweight vehicle body.

[0068] The above description is only a specific implementation of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present invention, which should be included in the protection scope of the present invention.

[0069] It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention, and these improvements and modifications should also be regarded as within the scope of protection of the present invention.

[0070] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or terminal device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or terminal device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or terminal device including the elements.

[0071] The tail skirt assembly, the rear structure of the vehicle and the vehicle provided by the present invention are introduced in detail above. The principle and implementation mode of the present invention are explained in detail by using specific examples herein. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation mode and the scope of application. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A tail skirt assembly, characterized in that: It includes the tail skirt inner plate, tail skirt outer plate, back door lock pin fixing plate and pillar inner plate; At least a portion of the pillar inner panel is attached to the surface of the tail skirt inner panel, at least a portion of the pillar inner panel and the tail skirt inner panel are surrounded by the tail door lock pin fixing plate to form a first cavity, a side of the tail door lock pin fixing plate facing away from the first cavity is surrounded by the tail skirt outer panel to form a second cavity, and at least two of the tail skirt inner panel, the tail skirt outer panel, the tail door lock pin fixing plate and the pillar inner panel are riveted together.

2. The tail skirt assembly according to claim 1, characterized in that: The tail skirt assembly also includes a first reinforcement member; The first reinforcement is riveted to the bottom of the tail skirt outer panel along the gravity direction, and a fastener is provided on the first reinforcement, and the fastener is used to be connected to the rear bumper.

3. The tail skirt assembly according to claim 1, characterized in that: Positioning holes are provided on the outer plate of the tail skirt.

4. The tail skirt assembly according to claim 1, characterized in that: The tail skirt inner plate is provided with a locking hole and a positioning protrusion, the locking hole passes through the tail skirt inner plate along the thickness direction, the positioning protrusion is close to the locking hole, and the tail skirt inner plate is also provided with a reinforcing rib.

5. The tail skirt assembly according to claim 1, characterized in that: The tail skirt assembly is an aluminum tail skirt assembly.

6. A vehicle rear structure, characterized in that: It comprises a rear floor and a tail skirt assembly as claimed in any one of claims 1 to 5; The rear floor is riveted to the bottom of the tail skirt outer plate along the gravity direction.

7. The vehicle rear structure according to claim 6, characterized in that: The vehicle rear structure also includes a first anti-collision beam, a second anti-collision beam and a reinforcement beam; The first anti-collision beam is connected to one side of the rear floor, an end of the first anti-collision beam is connected to one of the pillar inner panels, the second anti-collision beam is connected to the other side of the rear floor, an end of the second anti-collision beam is connected to another pillar inner panel, the reinforcement beam is arranged on the first surface of the rear floor, the reinforcement beam is connected between the first anti-collision beam and the second anti-collision beam, and an extension direction of the reinforcement beam is perpendicular to an extension direction of the first anti-collision beam and the second anti-collision beam.

8. The vehicle rear structure according to claim 7, characterized in that: The vehicle rear structure also includes at least one first reinforcement plate; The first reinforcing plate is connected to the first anti-collision beam and / or the second anti-collision beam on a side away from the rear floor, the first reinforcing plate is connected to the pillar inner plate, and the first reinforcing plate is used to connect the side panel assembly.

9. The vehicle rear structure according to claim 7, characterized in that: The vehicle rear structure also includes a towing hook; The support hook is arranged on the first anti-collision beam or the second anti-collision beam, the support hook is close to the second surface of the rear floor, and the support hook is used to support the wire harness.

10. A vehicle, characterized in that: The vehicle rear structure comprises the vehicle rear structure according to any one of claims 6 to 9.

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