Rear wall assembly for vehicle and vehicle with same

Abstract

The utility model discloses a rear wall assembly for a vehicle and the vehicle with the rear wall assembly. The rear wall assembly comprises a rear floor cross beam and a rear panel, the rear bumper is provided with an accommodating cavity which is opened towards the rear floor cross beam, and at least part of the top surface of the rear bumper is constructed to be a treading surface; the metal plate support is connected with the rear floor cross beam, the metal plate support extends towards the rear bumper to form a supporting part, and the supporting part is contained in the containing cavity; the supporting part abuts against the upper cavity wall of the containing cavity, and the projection of the supporting part and the projection of the treading face in the height direction of the vehicle are overlapped. According to the rear wall assembly designed by the utility model, the supporting part of the metal plate bracket is propped against the upper cavity wall of the accommodating cavity, and the projection of the supporting part and the projection of the treading surface in the height direction of the vehicle are overlapped, so that the bearing capacity of the rear bumper is improved, and the rear bumper is prevented from being damaged due to the fact that a user treads on the rear bumper.

Description

Technical Field

[0001] The utility model relates to the field of vehicles, in particular to a rear enclosure component for a vehicle and a vehicle having the rear enclosure component. Background Art

[0002] In the related art, a sheet metal bracket is provided on the rear floor cross beam of the vehicle, and the sheet metal bracket is suitable for providing a mounting position for the rear bumper. The rear bumper is connected to the rear floor cross beam through the sheet metal bracket. In the prior art, the sheet metal bracket is connected to a portion of the top wall of the rear bumper, but the above arrangement will result in poor bearing capacity of the top of the rear bumper, so that the rear bumper does not have a stepping function, and the user's car experience is poor. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to propose a rear bumper assembly for a vehicle. According to the rear bumper assembly designed by the utility model, the support portion of the sheet metal bracket is stopped against the upper cavity wall of the accommodating cavity, and the projection of the support portion and the treading surface in the height direction of the vehicle overlaps, thereby improving the bearing capacity of the rear bumper, avoiding damage to the rear bumper caused by users stepping on it, and improving the user's vehicle experience.

[0004] The utility model also provides a vehicle with the rear enclosure assembly.

[0005] According to the utility model, the rear enclosure assembly includes: a rear floor cross beam; a rear bumper, the rear bumper is provided with a accommodating cavity open toward the rear floor cross beam, and at least a portion of the top surface of the rear bumper is constructed as a treading surface; a sheet metal bracket, the sheet metal bracket is connected to the rear floor cross beam, the sheet metal bracket extends toward the rear bumper to form a supporting portion, and the supporting portion is accommodated in the accommodating cavity; wherein the supporting portion is stopped against the upper cavity wall of the accommodating cavity, and the support portion overlaps with the projection of the treading surface in the vehicle height direction.

[0006] According to the rear enclosure assembly of the utility model, by making the supporting portion of the sheet metal bracket abut against the upper cavity wall of the accommodating cavity, and the projection of the supporting portion and the treading surface in the height direction of the vehicle overlap, the force on the treading surface is transmitted to the rear floor crossbeam through the sheet metal bracket, thereby preventing the rear bumper from directly transmitting the force on the bearing surface to the rear floor crossbeam, thereby preventing the treading surface from collapsing and causing damage to the rear bumper, improving the bearing capacity of the treading surface, and allowing the rear bumper to have a treading function, thereby making it more convenient for users to get on and off the vehicle, thereby improving the user experience of the vehicle.

[0007] According to some embodiments of the present invention, the portion where the sheet metal bracket is connected to the rear floor cross beam is constructed as a connecting portion, the dimension of the connecting portion in the vehicle length direction is L1, and the dimension of the supporting portion in the vehicle length direction is L2, satisfying: 1 / 5≤L1 / L2≤2 / 3.

[0008] According to some embodiments of the utility model, the sheet metal bracket is constructed in plurality, the plurality of sheet metal brackets are spaced apart in the width direction of the vehicle, and a support plate is provided between the support portions of the plurality of sheet metal brackets and the upper cavity wall of the accommodating cavity.

[0009] According to some embodiments of the utility model, the support plate is connected to the rear floor cross beam, the rear floor cross beam is provided with a first guide portion extending in the length direction of the vehicle, and the support plate is provided with a second guide portion extending in the length direction of the vehicle, and the first guide portion cooperates with the second guide portion.

[0010] According to some embodiments of the present invention, one of the first guide portion and the second guide portion is configured as a guide pin, and the other of the first guide portion and the second guide portion is configured as a guide hole.

[0011] According to some embodiments of the utility model, a surface of the support plate facing the support portion is provided with a plurality of guide grooves extending in the length direction of the vehicle and corresponding one-to-one to the plurality of support portions, and at least parts of the plurality of support portions are respectively accommodated in the plurality of guide grooves.

[0012] According to some embodiments of the present invention, the support plate is fixed to the sheet metal bracket in the height direction of the vehicle by a first fastener, and the sheet metal bracket is fixed to the rear floor cross beam in the height direction of the vehicle by a second fastener.

[0013] According to some embodiments of the present invention, the utility model further comprises: an extension portion, which is arranged on the support portion and extends in the vehicle width direction, and the extension portion is suitable for abutting against the support plate.

[0014] According to some embodiments of the present invention, a buffer is provided between the support plate and the upper cavity wall of the accommodating cavity.

[0015] A vehicle according to another embodiment of the present invention will be briefly described below.

[0016] The vehicle according to the utility model includes the rear enclosure assembly described in any one of the above embodiments. Since the vehicle according to the utility model is provided with the rear enclosure assembly of the above embodiments, the rear bumper of the vehicle has a stepping function, which can enhance the user's vehicle experience.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] 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:

[0019] Figure 1 is a structural schematic diagram of a rear enclosure assembly according to an embodiment of the utility model;

[0020] Figure 2 is a side view of a rear enclosure assembly according to an embodiment of the utility model;

[0021] Figure 3 It is a schematic diagram of the assembly of the support plate, the rear floor crossbeam and the sheet metal bracket according to an embodiment of the utility model;

[0022] Figure 4 is a schematic diagram of the connection between the rear floor crossbeam and the sheet metal bracket according to an embodiment of the utility model;

[0023] Figure 5 It is a schematic diagram of the connection between the support plate and the sheet metal bracket according to an embodiment of the utility model;

[0024] Figure 6 It is a bottom view of the connection between the support plate, the rear floor crossbeam and the sheet metal bracket according to an embodiment of the utility model.

[0025] Reference numerals: 1, rear enclosure assembly;

[0026] 10. rear floor crossbeam; 11. guide hole; 12. first threaded hole;

[0027] 20. Rear bumper; 21. Tread surface;

[0028] 30. Sheet metal bracket; 31. Supporting part; 32. Connecting part;

[0029] 40. Support plate; 41. Guide pin. DETAILED DESCRIPTION

[0030] 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 only used to explain the present invention, and cannot be understood as limiting the present invention.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships 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 referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0032] 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 at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0033] 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, an electrical connection, or can communicate with each other; 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.

[0034] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0035] In the related art, a sheet metal bracket is provided on the rear floor cross beam of the vehicle, and the sheet metal bracket is suitable for providing a mounting position for the rear bumper. The rear bumper is connected to the rear floor cross beam through the sheet metal bracket. In the prior art, the sheet metal bracket is connected to a portion of the top wall of the rear bumper, but the above arrangement will result in poor bearing capacity of the top of the rear bumper, so that the rear bumper does not have a stepping function, and the user's car experience is poor.

[0036] Reference below Figure 1-Figure 6 A rear wall assembly 1 for a vehicle according to an embodiment of the present invention is described.

[0037] like Figure 1-Figure 6 As shown, the rear enclosure assembly 1 according to the utility model includes: a rear floor cross beam 10, a rear bumper 20 and a sheet metal bracket 30, the rear bumper 20 is provided with a accommodating cavity open toward the rear floor cross beam 10, at least a portion of the top surface of the rear bumper 20 is constructed as a tread surface 21, the sheet metal bracket 30 is connected to the rear floor cross beam 10, the sheet metal bracket 30 extends toward the rear bumper 20 to form a supporting portion 31, and the supporting portion 31 is accommodated in the accommodating cavity; wherein the supporting portion 31 abuts against the upper cavity wall of the accommodating cavity, and the projection of the supporting portion 31 and the tread surface 21 in the vehicle height direction overlaps.

[0038] In some embodiments, the sheet metal bracket 30 may have a first connecting surface facing the rear floor cross beam 10 in the length direction of the vehicle, a second connecting surface opposite to the first connecting surface is formed on the rear floor cross beam 10, and the first connecting surface is connected to the second connecting surface to connect the sheet metal bracket 30 to the rear floor cross beam 10; or the sheet metal bracket 30 may have a first connecting surface facing the rear floor cross beam 10 in the height direction of the vehicle, a second connecting surface opposite to the first connecting surface is formed on the rear floor cross beam 10, and the first connecting surface is connected to the second connecting surface to connect the sheet metal bracket 30 to the rear floor cross beam 10, and there is no limitation here. The sheet metal bracket 30 extends in the length direction of the vehicle in a direction away from the vehicle body. The portion of the sheet metal bracket 30 protruding from the rear floor cross beam 10 in the length direction of the vehicle is configured as a support portion 31. The rear bumper 20 has a receiving cavity open toward the rear floor cross beam 10. The support portion 31 is received in the receiving cavity and abuts against the upper cavity wall of the receiving cavity. At least a portion of the top surface of the rear bumper 20 is configured as a tread surface 21. In the height direction of the vehicle, the support portion 31 overlaps with the projection of the tread surface 21.

[0039] In some embodiments, the sheet metal bracket arranged on the rear floor cross beam is only used to provide a mounting position for the rear bumper to facilitate the installation of the rear bumper. The length of the portion of the sheet metal bracket protruding from the rear floor cross beam is short and cannot completely cover the treading surface of the rear bumper, resulting in a good bearing capacity of the overlapping portion of the treading surface and the sheet metal bracket in the height direction, and a poor bearing capacity of the non-overlapping portion of the treading surface and the sheet metal bracket in the height direction. When the user steps on the portion where the treading surface does not overlap with the projection of the sheet metal bracket in the height direction, the user's gravity will be directly transmitted to the rear floor cross beam through the rear bumper, causing the treading surface to collapse, and then causing damage to the bumper.

[0040] It can be understood that, in the rear enclosure assembly 1 of the present application, the support portion 31 abuts against the upper cavity wall of the accommodating cavity and the support portion 31 overlaps with the projection of the tread surface 21 in the height direction of the vehicle, that is, the tread surface 21 can be fully supported on the support portion 31, so that the tread surface 21 can transfer the user's gravity to the support portion 31, and the support portion 31 transfers the user's gravity to the rear floor beam 10, thereby preventing the user's gravity from being directly transferred to the rear floor beam 10 through the rear bumper 20, that is, the user can be supported on the tread surface 21 without causing the tread surface 21 to collapse, thereby avoiding damage to the rear bumper 20.

[0041] According to the rear enclosure assembly 1 involved in the utility model, by making the support portion 31 of the sheet metal bracket 30 abut against the upper cavity wall of the accommodating cavity, and the projection of the support portion 31 and the tread surface 21 in the height direction of the vehicle overlap, the force on the tread surface 21 is transmitted to the rear floor cross beam 10 through the sheet metal bracket 30, thereby preventing the rear bumper 20 from directly transmitting the force on the bearing surface 21 to the rear floor cross beam 10, thereby preventing the tread surface 21 from collapsing and causing damage to the rear bumper 20, and improving the bearing capacity of the tread surface 21, so that the rear bumper 20 can have a treading function, thereby making it more convenient for users to get on and off the vehicle, and improving the user experience of the vehicle.

[0042] According to some embodiments of the present invention, Figure 1-Figure 6 As shown, the portion where the sheet metal bracket 30 is connected to the rear floor cross beam 10 is constructed as a connecting portion 32, the dimension of the connecting portion 32 in the vehicle length direction is L1, and the dimension of the supporting portion 31 in the vehicle length direction is L2, satisfying: 1 / 5≤L1 / L2≤2 / 3. Therefore, the above-mentioned arrangement can ensure the bearing capacity of the supporting portion 31, thereby ensuring the bearing capacity of the rear bumper 20, and further enabling the rear bumper 20 to have a stepping function. It can be understood that the length ratio of the connection part 32 and the support part 31 can be set according to the rigidity of the sheet metal bracket 30, and the projection of the support part 31 and the tread surface 21 in the height direction overlap, that is, the length dimension of the support part 31 is a constant value. When the rigidity of the sheet metal bracket 30 is relatively large, L1 / L2=2 / 3 can be set, thereby shortening the length dimension of the connection part 32, thereby reducing the weight of the sheet metal bracket 30 and achieving lightweight vehicle. When the rigidity of the sheet metal bracket 30 is relatively small, L1 / L2=1 / 5 can be set. At this time, the connection strength between the connection part 32 and the rear bumper 20 is increased to improve the bearing capacity of the support part 31, thereby ensuring that the support part 31 will not deform when transmitting the force from the bearing surface, thereby ensuring the bearing capacity of the rear bumper 20.

[0043] According to some embodiments of the present invention, Figure 1-Figure 6As shown, the sheet metal bracket 30 is constructed in multiple numbers, and the multiple sheet metal brackets 30 are spaced apart in the width direction of the vehicle, and a support plate 40 is arranged between the support parts 31 of the multiple sheet metal brackets 30 and the upper cavity wall of the accommodating cavity. It can be understood that in the width direction of the vehicle, multiple sheet metal brackets 30 are arranged on the rear floor cross beam 10, and the multiple sheet metal brackets 30 are arranged at intervals. Therefore, the weight of the sheet metal bracket 30 can be reduced by the above, thereby achieving lightweight of the vehicle, and at the same time, the production cost of the sheet metal bracket 30 can be reduced. A support plate 40 is arranged between the support parts 31 of the multiple sheet metal brackets 30 and the upper cavity wall of the accommodating cavity. The support plate 40 can prevent the user from stepping on the adjacent sheet metal brackets 30, thereby preventing the tread surface 21 from collapsing and causing damage to the rear bumper 20. It is worth mentioning that the support plate 40 can be constructed as a plastic plate or a wooden plate, etc., which is not limited here.

[0044] According to some embodiments of the present invention, Figure 1-Figure 6 As shown, the support plate 40 is connected to the rear floor cross beam 10, and the rear floor cross beam 10 is provided with a first guide portion extending in the length direction of the vehicle, and the support plate 40 is provided with a second guide portion extending in the length direction of the vehicle, and the first guide portion cooperates with the second guide portion.

[0045] In the related art, a plurality of first through holes are arranged on the support plate, and a first threaded hole corresponding to the plurality of first through holes is arranged on the rear floor beam. First bolts are respectively arranged in sequence for the first through holes and the first threaded holes on the support plate and the rear floor beam to realize the connection between the support plate and the rear floor beam.

[0046] In the present application, by providing the first guide portion and the second guide portion, the support plate 40 and the rear floor cross beam 10 can be pre-positioned and matched, thereby improving the connection efficiency between the support plate 40 and the rear floor cross beam 10. At the same time, the cooperation between the first guide portion and the second guide portion can avoid the support plate 40 from being deflected when assembling the support plate 40, thereby preventing the multiple first through holes and the corresponding multiple first threaded holes 12 from being deflected, thereby further improving the connection efficiency between the support plate 40 and the rear floor cross beam 10.

[0047] According to some embodiments of the present invention, Figure 1-Figure 6As shown, one of the first guide portion and the second guide portion is configured as a guide pin 41, and the other of the first guide portion and the second guide portion is configured as a guide hole 11. In some embodiments, in the longitudinal direction of the vehicle, a positioning pin 41 is provided on the surface of the rear floor cross beam 10 facing the support plate 40, and the positioning pin 41 extends toward the support plate 40. A guide hole 11 corresponding to the guide pin 41 is provided on the surface of the support plate 40 facing the rear floor cross beam 10. When connecting the support plate 40 and the rear floor cross beam 10, the guide pin 41 is first aligned with the guide hole 11, and then the support plate 40 is pushed toward the rear floor cross beam 10. In the process of pushing the support plate 10, the guide hole 11 can limit the movement of the guide pin 41 so that when the support plate 40 and the rear floor cross beam 10 stop, the multiple first through holes on the support plate 40 can correspond one by one to the multiple first threaded holes on the rear floor cross beam 10, thereby improving the connection efficiency of the support plate 40 and the rear floor cross beam 10.

[0048] In other embodiments, in the length direction of the vehicle, a guide hole 11 is provided on the surface of the rear floor beam 10 facing the support plate 40, and a guide pin 41 extending toward the rear floor beam 10 is provided on the surface of the support plate 40 facing the rear floor beam 10. When assembling the support plate 40, the guide hole 11 can limit the movement of the guide pin 41, so that the support plate 40 can be quickly and accurately assembled to the rear floor beam 10, thereby improving the connection efficiency between the support plate 40 and the rear floor beam 10.

[0049] According to some embodiments of the present invention, Figure 1-Figure 6 As shown, the surface of the support plate 40 facing the support portion 31 is provided with a plurality of guide grooves extending in the vehicle length direction and corresponding to the plurality of support portions 31 one by one, and at least parts of the plurality of support portions 31 are respectively received in the plurality of guide grooves. It can be understood that the multiple support portions 31 extend along the length direction of the vehicle, and the surface of the support plate 40 facing the support portion 31 is provided with multiple guide grooves extending in the length direction of the vehicle, and the multiple support portions 31 are respectively received in the multiple guide grooves, and the extension direction of the support portion 31 is the same as the extension direction of the guide groove. When installing the support plate 40, the support plate 40 can be overlapped on the multiple support portions 31 first, and the multiple support portions 31 are respectively received in the corresponding multiple guide grooves. At this time, the support plate 40 is pushed toward the rear floor cross beam 10. In the process of pushing the support plate 40, the guide groove moves along the extension direction of the support portion 31, that is, the support portion 31 can guide the movement of the guide groove. Therefore, the support portion 31 cooperates with the guide groove to guide the movement of the support plate 40, so that when the support plate 40 stops against the rear floor cross beam 10, the multiple first through holes on the support plate 40 correspond one-to-one with the multiple first threaded holes 12 on the rear floor cross beam 10, thereby improving the connection efficiency between the support plate 40 and the rear floor cross beam 10.

[0050] According to some embodiments of the present invention, Figure 1-Figure 6 As shown, the support plate 40 is fixed to the sheet metal bracket 30 in the height direction of the vehicle by a first fastener, and the sheet metal bracket 30 is fixed to the rear floor cross member 10 in the height direction of the vehicle by a second fastener.

[0051] In some embodiments, the connecting portion 32 is connected to the rear floor cross beam 10 in the height direction of the vehicle, a second through hole extending in the height direction is provided on the support plate 40, a second threaded hole corresponding to the second through hole is provided on the sheet metal bracket 30, the first fastener can be constructed as a second bolt, the second bolt passes through the second through hole and is threadedly connected to the second threaded hole to fix the sheet metal bracket 30 to the support plate 40, thereby improving the assembly stability of the support plate 40; the sheet metal bracket 30 is provided with a third through hole extending in the height direction, a third threaded hole corresponding to the third through hole is provided on the rear floor cross beam 10, the second fastener can be constructed as a third bolt, the third bolt passes through the third through hole and is threadedly connected to the third threaded hole to fix the sheet metal bracket 30 to the rear floor cross beam 10.

[0052] According to some embodiments of the present invention, Figure 1-Figure 6 As shown, the rear enclosure assembly 1 further includes: an extension portion, which is disposed on the support portion 31 and extends in the vehicle width direction, and is suitable for abutting against the support plate 40 .

[0053] It can be understood that the support portion 31 extends in the length direction of the vehicle, and an extension portion is provided on the support portion 31 and extends in the width direction of the vehicle. The support portion 31 and the extension portion are both suitable for abutting against the support plate 40. The extension portion can increase the contact area between the sheet metal bracket 30 and the support plate 40, that is, the extension portion can increase the supporting area of ​​the sheet metal bracket 30 for the support plate 40, thereby improving the bearing capacity of the support plate 40, thereby improving the bearing capacity of the tread surface 21. At the same time, the support area of ​​the sheet metal bracket 30 for the support plate 40 is increased, so that the support plate 40 can be more stably supported on the support portion 31, thereby improving the installation stability of the support plate 40.

[0054] According to some embodiments of the present invention, Figure 1-Figure 6 As shown, a buffer is provided between the support plate 40 and the upper cavity wall of the accommodating cavity. It is understandable that when the vehicle is driving on a bumpy road, the support plate 40 may collide with the upper cavity wall of the accommodating cavity and produce abnormal noise. The buffer can prevent the support plate 40 from contacting the upper cavity wall of the accommodating cavity, thereby reducing the abnormal noise when the vehicle is driving and improving the driving experience of the user. Preferably, the buffer can be constructed of non-woven fabric.

[0055] The vehicle according to the present utility model is briefly described below.

[0056] The vehicle according to the utility model is provided with the rear enclosure assembly 1 of the above-mentioned embodiment. Since the vehicle according to the utility model is provided with the rear enclosure assembly 1 described in any one of the above-mentioned embodiments, the rear bumper 20 of the vehicle has a stepping function, which can enhance the user's vehicle experience.

[0057] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0058] Although embodiments of the present invention have been shown and described above, changes, modifications, substitutions and variations may be made to the embodiments described above.

Claims

1. A rear enclosure assembly for a vehicle, characterized in that: include: rear floor cross member (10); A rear bumper (20), the rear bumper (20) being provided with a receiving cavity open toward the rear floor cross beam (10), and at least a portion of a top surface of the rear bumper (20) being configured as a tread surface (21); a sheet metal bracket (30), the sheet metal bracket (30) being connected to the rear floor cross beam (10), the sheet metal bracket (30) extending toward the rear bumper (20) to form a support portion (31), and the support portion (31) being received in the accommodating cavity; in The support portion (31) abuts against an upper cavity wall of the accommodating cavity, and the projection of the support portion (31) and the tread surface (21) in the vehicle height direction overlaps.

2. The rear wall assembly for a vehicle according to claim 1, characterized in that: The portion where the sheet metal bracket (30) is connected to the rear floor cross beam (10) is configured as a connecting portion (32), the dimension of the connecting portion (32) in the vehicle length direction is L1, and the dimension of the supporting portion (31) in the vehicle length direction is L2, satisfying: 1 / 5≤L1 / L2≤2 / 3.

3. The rear wall assembly for a vehicle according to claim 1, characterized in that: The sheet metal brackets (30) are constructed in plurality, and the plurality of sheet metal brackets (30) are spaced apart in the width direction of the vehicle, and a support plate (40) is provided between the support portions (31) of the plurality of sheet metal brackets (30) and the upper cavity wall of the accommodating cavity.

4. The rear wall assembly for a vehicle according to claim 3, characterized in that: The support plate (40) is connected to the rear floor cross beam (10), the rear floor cross beam (10) is provided with a first guide portion extending in the length direction of the vehicle, the support plate (40) is provided with a second guide portion extending in the length direction of the vehicle, and the first guide portion cooperates with the second guide portion.

5. The rear wall assembly for a vehicle according to claim 4, characterized in that: One of the first guide portion and the second guide portion is configured as a guide pin (41), and the other of the first guide portion and the second guide portion is configured as a guide hole (11).

6. The rear wall assembly for a vehicle according to claim 3, characterized in that: The support plate (40) is provided with a plurality of guide grooves extending in the vehicle length direction and corresponding one-to-one to the plurality of support portions (31) on a surface facing the support portion (31), and at least parts of the plurality of support portions (31) are respectively accommodated in the plurality of guide grooves.

7. The rear wall assembly for a vehicle according to claim 3, characterized in that: The support plate (40) is fixed to the sheet metal bracket (30) in the height direction of the vehicle via a first fastener, and the sheet metal bracket (30) is fixed to the rear floor cross beam (10) in the height direction of the vehicle via a second fastener.

8. The rear wall assembly for a vehicle according to claim 3, characterized in that: Also includes: An extension portion is provided on the support portion (31) and extends in the vehicle width direction, and the extension portion is suitable for abutting against the support plate (40).

9. The rear wall assembly for a vehicle according to claim 3, characterized in that: A buffer is provided between the support plate (40) and the upper cavity wall of the accommodating cavity.

10. A vehicle, characterized in that: A rear panel assembly (1) for a vehicle comprising the embodiment of any one of claims 1 to 9.

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