Rear floor assembly and vehicle

Abstract

The application discloses a rear floor assembly and a vehicle, the rear floor assembly comprises a vehicle body floor, the vehicle body floor is provided with a pit and a spare tire pit for mounting a charging device, the pit and the spare tire pit are communicated, the bottom surface of the pit is higher than the bottom surface of the spare tire pit, and the bottom surface of the pit is connected with the inner side surface of the spare tire pit. The rear floor assembly of the application sets the pit connected with the spare tire pit on the vehicle body floor, and the bottom surface of the pit is higher than the bottom surface of the spare tire pit, so that the stamping depth at the joint position of the spare tire pit and the pit is reduced, the stamping angle is reduced, the distance between the stamping edge and the edge of the bottom surface of the spare tire pit is reduced, the internal space size of the spare tire pit in the arrangement direction of the pit and the spare tire pit is increased, and enough anti-collision distance can be reserved for the charging device mounted in the spare tire pit, the anti-collision reliability is improved, and the charging device is prevented from being damaged due to extrusion.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, in particular to a rear floor assembly and a vehicle. BACKGROUND

[0002] In the rear floor position of a pure electric vehicle or a hybrid vehicle, the spare tire is cancelled compared with a traditional vehicle, and a charging device is arranged instead, that is, the original spare tire pit is used to accommodate the charging device. However, the front and rear sizes of the spare tire pit in the related art are small, and when the rear part of the vehicle is hit, the charging device arranged in the spare tire pit is easily squeezed and damaged. SUMMARY

[0003] The present application aims to at least solve one of the technical problems in the related art. To this end, an embodiment of the present application provides a rear floor assembly, which sets a communicating pit and a spare tire pit on a vehicle body floor, the bottom surface of the pit is higher than the bottom surface of the spare tire pit, and the bottom surface of the pit is connected to the inner side surface of the spare tire pit. Therefore, the position where the spare tire pit and the pit meet is taken as the stamping starting surface of the bottom surface of the pit, compared with the stamping of the spare tire pit directly from the surface of the vehicle body floor in the related art, the stamping depth of the position where the spare tire pit and the pit meet is reduced, thereby reducing the stamping angle, and further reducing the distance between the stamping edge (the connection between the bottom surface of the pit and the side surface of the spare tire pit) and the bottom edge of the spare tire pit, so that the internal space size of the spare tire pit can be increased in the direction of the arrangement of the pit and the spare tire pit, and further a sufficient anti-collision distance can be reserved for the charging device arranged in the spare tire pit, thereby improving the anti-collision reliability and avoiding the damage of the charging device caused by squeezing.

[0004] An embodiment of the present application further provides a vehicle.

[0005] The rear floor assembly of the embodiment of the present application comprises a vehicle body floor, the vehicle body floor is provided with a pit and a spare tire pit for mounting a charging device, the pit and the spare tire pit are communicated, the bottom surface of the pit is higher than the bottom surface of the spare tire pit, and the bottom surface of the pit is connected to the inner side surface of the spare tire pit.

[0006] The rear floor assembly of the embodiment of the present application, the vehicle body floor is partially stamped to form the pit and the spare tire pit, the pit and the spare tire pit are connected, the bottom surface of the pit is higher than the bottom surface of the spare tire pit, and the bottom surface of the pit is connected to the inner side surface of the spare tire pit. Therefore, compared with the stamping starting surface of the surface of the vehicle body floor, the pit is set, and the stamping starting surface is the bottom surface of the pit, the stamping depth of the side where the spare tire pit and the pit meet is reduced, thereby reducing the stamping angle, and further reducing the distance between the stamping edge (the connection between the bottom surface of the pit and the side surface of the spare tire pit) and the bottom edge of the spare tire pit, so that a sufficient anti-collision distance can be reserved for the charging device arranged in the spare tire pit, thereby improving the anti-collision reliability and avoiding the damage of the charging device caused by squeezing.

[0007] In some embodiments, the size of the recess along a first direction is equal to the size of the spare tire pit along the first direction, the first direction being the extension direction of the joint between the recess and the spare tire pit.

[0008] In some embodiments, the recess is located at the front side of the spare tire pit in the front-rear direction of the vehicle body, the rear floor assembly further comprises a rear cross beam, the rear cross beam is located at the front side of the spare tire pit in the front-rear direction of the vehicle body and extends along the first direction, and the rear cross beam is arranged at the back of the recess, the rear cross beam is connected with the back of the recess and the outer side of the spare tire pit.

[0009] In some embodiments, the rear cross beam comprises a front support plate and a rear support plate arranged opposite and spaced apart in the front-rear direction of the vehicle body, the front support plate is away from the spare tire pit relative to the rear support plate, and the front support plate is located at the side of the recess away from the spare tire pit and connected with the vehicle body floor, the rear support plate is connected with the back of the bottom wall of the recess, and in the height direction of the vehicle body, the size of the front support plate is greater than the size of the rear support plate.

[0010] In some embodiments, the end surface of the rear support plate in contact with the vehicle body floor comprises a flat section and an inclined section in the first direction, both ends of the flat section are provided with the inclined section, the flat section extends horizontally, and the inclined section extends obliquely towards the direction close to the vehicle body floor in the direction away from the flat section.

[0011] In some embodiments, the rear floor assembly further comprises a cover plate, the cover plate extends along the first direction and is connected with the vehicle body floor, the cover plate can cover the opening of the recess, and a cavity is formed between the cover plate and the recess.

[0012] In some embodiments, the cover plate comprises an upper connecting plate, a vertical plate and a lower connecting plate, the upper connecting plate and the lower connecting plate are arranged horizontally, and the vertical plate is arranged vertically, one side of the upper connecting plate is connected with the vehicle body floor and located at the side of the recess away from the spare tire pit, one end of the vertical plate is connected with the other side of the upper connecting plate, one side of the lower connecting plate is connected with the other end of the vertical plate, and the lower connecting plate is connected with the bottom surface of the recess.

[0013] In some embodiments, the connection between the upper connecting plate and the vehicle body floor is opposite to the connection between the front support plate and the vehicle body floor, and the connection between the lower connecting plate and the vehicle body floor is opposite to the connection between the rear support plate and the vehicle body floor.

[0014] In some embodiments, the rear floor assembly further includes a mounting plate and a reinforcing plate. The mounting plate is disposed in the spare tire pit and connected to both the bottom surface and the front inner surface of the spare tire pit, and the mounting plate is spaced apart from the bottom surface of the spare tire pit. The mounting plate can be used for a charging and distribution device. The reinforcing plate is disposed on the rear crossbeam and connected to the front outer surface of the spare tire pit.

[0015] In some embodiments, the connection between the reinforcing plate and the front outer side of the spare tire pit is opposite to the connection between the mounting plate and the front inner side of the spare tire pit.

[0016] The vehicle of this invention includes the rear floor assembly described in the above embodiments.

[0017] In the vehicle of this embodiment, by employing the aforementioned rear floor assembly, a recess and a spare tire recess are formed by partial stamping of the vehicle floor. The recess and the spare tire recess are connected, with the bottom surface of the recess higher than the bottom surface of the spare tire recess. The bottom surface of the recess is connected to the inner surface of the spare tire recess. Therefore, compared to using the surface of the vehicle floor as the stamping starting surface, by setting a recess and using the bottom surface of the recess as the stamping starting surface, the stamping depth at the position adjacent to the recess is reduced. This reduces the distance between the bottom edge of the recess and the bottom edge of the spare tire recess, thereby increasing the internal space size of the spare tire recess in the direction of the arrangement of the recess and the spare tire recess. This allows sufficient anti-collision distance to be reserved for charging and distribution devices, such as those mounted in the spare tire recess, improving anti-collision reliability, preventing damage to the charging and distribution devices due to compression, and improving vehicle safety performance. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the rear floor assembly according to an embodiment of the present invention.

[0019] Figure 2 This is a bottom view of the rear floor assembly according to an embodiment of the present invention.

[0020] Figure 3 This is a cross-sectional view of the rear floor assembly according to an embodiment of the present invention.

[0021] Figure 4 This is an exploded view of the rear floor assembly according to an embodiment of the present invention.

[0022] Figure 5 This is a schematic diagram of the structure of the rear crossbeam of the rear floor assembly according to an embodiment of the present invention.

[0023] Figure 6 This is a schematic diagram of the structure of the vehicle floor of the rear floor assembly according to an embodiment of the present invention.

[0024] Figure 7 This is a schematic diagram of the structure of the mounting plate of the rear floor assembly according to an embodiment of the present invention.

[0025] Figure 8This is a schematic diagram of the structure of the reinforcing plate of the rear floor assembly according to an embodiment of the present invention.

[0026] Figure 9 This is a schematic diagram of the assembly of the rear crossbeam and reinforcing plate of the rear floor assembly according to an embodiment of the present invention.

[0027] Figure 10 This is an exploded view of the assembly of the rear crossbeam of the rear floor assembly with the vehicle floor according to an embodiment of the present invention.

[0028] Figure 11 This is a comparative schematic diagram of the rear floor assembly of this invention and the rear floor assembly in related technologies regarding the assembly position of the charging device.

[0029] Figure label:

[0030] Vehicle body floor 1, dent 11, spare tire pit 12, rear crossbeam 2, front support plate 21, rear support plate 22, straight section 221, inclined section 222, cover plate 3, upper connecting plate 31, upright plate 32, lower connecting plate 33, mounting plate 4, body 41, connecting plate 42, reinforcing plate 5, tail plate 6, charging device 7. Detailed Implementation

[0031] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0032] like Figures 1-11 As shown, the rear floor assembly of this embodiment includes a vehicle floor 1. The vehicle floor 1 is provided with a recess 11 and a spare tire pit 12 for installing a charging device 7. The recess 11 and the spare tire pit 12 are connected. The bottom surface of the recess 11 is higher than the bottom surface of the spare tire pit 12, and the bottom surface of the recess 11 is in contact with the inner surface of the spare tire pit 12.

[0033] It should be noted that, compared to traditional models, the spare tire is not installed in the rear floor of pure electric or hybrid vehicles. The spare tire pit can be used to protect components such as charging and distribution devices. However, the original spare tire pit of the vehicle is too small in the front-rear direction. During a rear-end collision, the charging and distribution device is easily damaged by the rear compression due to the small safety distance between it and the rear of the vehicle.

[0034] In addition, when the spare tire recess is stamped, its inner side will tilt inward (an inevitable result of stamping). The greater the stamping depth, the greater the degree of inclination of the inner side. The difference between the edge of the stamping starting position and the edge of the bottom of the recess formed after stamping is also greater. That is, taking the surface of a unit area as the stamping surface, it can be seen that the greater the stamping depth, the smaller the internal space size of the spare tire recess formed by stamping.

[0035] For ease of understanding, taking a recess 11 on the front side of the spare tire pit 12 as an example, due to the structure of the rear crossbeam 2 and other components, the maximum extension dimension of the spare tire pit 12 in the front-rear direction (the front-rear dimension at the opening) cannot be changed. The starting point for this application is to solve the technical problem by increasing the internal space of the spare tire pit 12 while keeping the maximum extension dimension constant. Specifically, the distance between the rear edge of the recess 11 and the vehicle tailgate 6 is a fixed value L; the distance between the rear edge of the recess 11 and the front edge of the bottom surface of the spare tire pit 12 is L1; and the distance between the front edge of the bottom surface of the spare tire pit 12 and the vehicle tailgate 6 is L2. Therefore, L = L1 + L2. That is, the larger L1 is, the smaller L2 is. According to the stamping principle, the greater the stamping depth, the larger the stamping radius, and the larger L1 is. Therefore, by reducing the stamping depth, L1 can be reduced, thereby increasing L2, and thus increasing the space of the spare tire pit 12. (Reference) Figure 11 This application ( Figure 11 -b) Compared to existing technologies ( Figure 11 -a) The internal space of the spare tire pit 12 is increased, and the charging device 7 can be moved forward relatively to leave a sufficient safety distance behind it.

[0036] The inventors of this application, through the above-mentioned stamping principle, provide a recess 11 on the vehicle floor 1 that is adjacent to the spare tire pit 12, and the bottom surface of the recess 11 is higher than the bottom surface of the spare tire pit 12 and is connected to the side of the spare tire pit 12. Since the height between the bottom surface of the recess 11 and the bottom surface of the spare tire pit 12 is small, that is, the stamping depth is small, L1 can be reduced, thereby increasing the front and rear dimensions of the spare tire pit 12 and improving the safety distance for collision avoidance.

[0037] In the rear floor assembly of this invention, a recess and a spare tire recess are formed by partial stamping of the vehicle floor. The recess and the spare tire recess are connected, and the bottom surface of the recess is higher than the bottom surface of the spare tire recess. The bottom surface of the recess is in contact with the inner side surface of the spare tire recess. Therefore, compared with using the surface of the vehicle floor as the stamping starting surface, by setting the recess and using the bottom surface of the recess as the stamping starting surface, the stamping depth of the side where the spare tire recess and the recess meet is reduced, thereby reducing the stamping angle. This reduces the distance between the stamping edge (the connection between the bottom surface of the recess and the side surface of the spare tire recess) and the bottom edge of the spare tire recess. As a result, sufficient anti-collision distance can be reserved for charging and distribution devices such as those installed in the spare tire recess, improving anti-collision reliability and preventing damage to the charging and distribution devices due to compression.

[0038] Furthermore, the dimension of the recess 11 along the first direction is equal to the dimension of the spare tire recess 12 along the first direction, where the first direction is the extending direction at the connection between the recess 11 and the spare tire recess 12. Specifically, as shown... Figure 3As shown, the recess 11 extends along the width of the vehicle body, and the front side of the spare tire recess 12 is connected to the recess 11. That is, the stamping depth of the front side of the spare tire recess 12 is small, and the spatial dimension of the spare tire recess 12 in the front-rear direction is increased. The installation position of the charging and distribution device can be moved forward relatively, thereby increasing its distance from the tailgate 6 and the collision safety distance is large.

[0039] In some embodiments, such as Figure 2 and Figure 3 As shown, the rear floor assembly also includes a rear crossbeam 2, which is located in front of the spare tire well 12 and extends along a first direction in the longitudinal direction of the vehicle body. The rear crossbeam 2 is disposed on the back side of the recess 11, and is connected to both the back side of the recess 11 and the outer side of the spare tire well 12. Thus, the rear crossbeam 2 can support the vehicle floor 1, providing sufficient rigidity for the vehicle floor 1.

[0040] Furthermore, such as Figure 5 As shown, the rear crossbeam 2 includes a front support plate 21 and a rear support plate 22 arranged opposite to each other and spaced apart in the longitudinal direction of the vehicle body. The front support plate 21 is farther away from the spare tire pit 12 relative to the rear support plate 22, and the front support plate 21 is located on the side of the recess 11 away from the spare tire pit 12 and is connected to the vehicle floor 1. The rear support plate 22 is connected to the back side of the bottom wall of the recess 11. In the height direction of the vehicle body, the size of the front support plate 21 is larger than the size of the rear support plate 22. Thus, the front and rear support plates 22 and the rear support plate 22 can be fitted with the contour of the recess 11 to ensure good contact between the rear crossbeam 2 and the vehicle floor 1.

[0041] Optionally, such as Figure 5 As shown, the end face of the rear support plate 22 that contacts the vehicle floor 1 includes a straight section 221 and an inclined section 222 in the first direction. Both ends of the straight section 221 are provided with inclined sections 222. The straight section 221 extends horizontally, and the inclined sections 222 extend inclinedly towards the vehicle floor 1 in a direction away from the straight section 221. Therefore, when the rear support plate 22 is supported at the recess 11, the straight section 221 can fit against the bottom wall of the recess 11, and the inclined sections 222 tilt upwards to match the side walls of the recess 11. That is, the overall contour of the outer side and bottom surface of the recess 11 is concave, and the overall contour of the straight section 221 and the inclined sections 222 on both sides are also concave, thereby improving the fit between the rear support plate 22 and the recess 11 and ensuring the support effect.

[0042] Optionally, such as Figure 4 As shown, the rear floor assembly also includes a cover plate 3, which extends along a first direction and connects to the vehicle floor 1. The cover plate 3 covers the opening of the recess 11, and a cavity is formed between the cover plate 3 and the recess 11. Thus, the cover plate 3 can keep the surface of the vehicle floor 1 flat and prevent the recess 11 from being exposed.

[0043] Furthermore, such as Figure 3As shown, the cover plate 3 includes an upper connecting plate 31, a vertical plate 32, and a lower connecting plate 33. The upper connecting plate 31 and the lower connecting plate 33 are horizontally arranged, and the vertical plate 32 is vertically arranged. One side of the upper connecting plate 31 is connected to the vehicle floor 1 and is located on the side of the recess 11 away from the spare tire recess 12. One end of the vertical plate 32 is connected to the other side of the upper connecting plate 31, and one side of the lower connecting plate 33 is connected to the other end of the vertical plate 32. The lower connecting plate 33 is also connected to the bottom surface of the recess 11. Preferably, both the upper connecting plate 31 and the lower connecting plate 33 are fitted and connected to the vehicle floor 1.

[0044] Preferably, such as Figure 3 As shown, the connection between the upper connecting plate 31 and the vehicle floor 1 and the connection between the front support plate 21 and the vehicle floor 1 are opposite to each other, and the connection between the lower connecting plate 33 and the vehicle floor 1 and the connection between the rear support plate 22 and the vehicle floor 1 are opposite to each other.

[0045] Therefore, the cover plate 3, the rear crossbeam 2 and the vehicle floor 1 can be welded together to ensure the integrity of the rear crossbeam 2 structure and improve the structural strength of the rear floor assembly.

[0046] Furthermore, such as Figure 3 and Figure 4 As shown, the rear floor assembly also includes a mounting plate 4 and a reinforcing plate 5. The mounting plate 4 is located in the spare tire pit 12 and connected to the front inner side of the spare tire pit 12. The mounting plate 4 is spaced apart from the bottom surface of the spare tire pit 11. The reinforcing plate 5 is located on the rear crossbeam 2 and connected to the front outer side of the spare tire pit 12.

[0047] Preferably, such as Figure 8 and Figure 9 As shown, the reinforcing plate 5 is welded to the rear support plate 22, and the reinforcing plate 5 is a U-shaped cross-section structure with high structural rigidity.

[0048] Optionally, such as Figure 7 As shown, the mounting plate 4 includes a body 41 and a connecting plate 42. Both ends of the body 41 in the length direction are provided with connecting plates 42. The connecting plates 42 are bent upward relative to the body 41. The connecting plates 42 are attached to and connected to the inner side of the spare tire pit 12. The body 41 is provided with a connecting hole. The charging device 7 is provided on the body 41 and is connected to the body 41 through a connector passing through the connecting hole.

[0049] In other words, the mounting plate 4 is also a U-shaped structural component with high structural rigidity. Its two side plates (connecting plates) can be fitted and connected to the inner side of the spare tire pit 12, ensuring stable installation.

[0050] Preferably, such as Figure 3As shown, the connection between the reinforcing plate 5 and the front outer side of the spare tire pit 12 and the connection between the mounting plate 4 and the front inner side of the spare tire pit 12 are opposite. Thus, the rear crossbeam 2, the reinforcing plate 5, the vehicle floor 1, and the mounting plate 4 can be welded together as a whole. The reinforcing plate 5 can simultaneously support the vehicle floor 1 and the mounting plate 4, thereby improving the overall structural strength of the rear floor assembly.

[0051] The vehicle of this invention includes the rear floor assembly of the above embodiments.

[0052] In the vehicle of this embodiment, by employing the aforementioned rear floor assembly, the vehicle body floor 1 is partially stamped to form a recess 11 and a spare tire recess 12. The recess 11 and the spare tire recess 12 are connected, and the bottom surface of the recess 11 is higher than the bottom surface of the spare tire recess 12. The bottom surface of the recess 11 is in contact with the inner surface of the spare tire recess 12. Therefore, compared to using the surface of the vehicle body floor 1 as the stamping starting surface, by setting the recess 11 and using the bottom surface of the recess 11 as the stamping starting surface, the stamping depth at the position adjacent to the recess 11 is reduced. This reduces the distance between the bottom edge of the recess 11 and the bottom edge of the spare tire recess 12, thereby increasing the internal space size of the spare tire recess 12 in the direction in which the recess 11 and the spare tire recess 12 are arranged. This allows sufficient anti-collision distance to be reserved for charging and distribution devices, such as those installed in the spare tire recess 12, improving anti-collision reliability, preventing damage to the charging and distribution devices due to compression, and improving vehicle safety performance.

[0053] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to 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 invention.

[0054] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0055] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0056] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

Claims

1. A rear floor assembly characterized by, The rear floor assembly comprises a vehicle body floor provided with a recess and a spare tire pit for mounting a charging device, the spare tire pit is formed by stamping with the bottom surface of the recess as a stamping starting surface, the recess is communicated with the spare tire pit, the bottom surface of the recess is higher than the bottom surface of the spare tire pit, and the bottom surface of the recess is connected with the inner side surface of the spare tire pit.

2. The rear floor assembly of claim 1, wherein, The size of the recess along a first direction is equal to the size of the spare tire pit along the first direction, and the first direction is the extension direction of the connection part of the recess and the spare tire pit.

3. The rear floor assembly of claim 2, wherein, The recess is located in front of the spare tire pit in the front-rear direction of the vehicle body, and the rear floor assembly further comprises a rear cross beam located in front of the spare tire pit in the front-rear direction of the vehicle body and extending along the first direction, and the rear cross beam is arranged on the back surface of the recess, and the rear cross beam is connected with the back surface of the recess and the outer side surface of the spare tire pit.

4. The rear floor assembly of claim 3, wherein, The rear cross beam comprises front and rear support plates arranged opposite and spaced apart in the front-rear direction of the vehicle body, the front support plate is away from the spare tire pit relative to the rear support plate, and the front support plate is located on the side of the recess away from the spare tire pit and connected with the vehicle body floor, and the rear support plate is connected with the back surface of the bottom wall of the recess, and the size of the front support plate is greater than the size of the rear support plate in the height direction of the vehicle body.

5. The rear floor assembly of claim 4, wherein, The end surface of the rear support plate in contact with the vehicle body floor comprises a flat section and an inclined section in the first direction, both ends of the flat section are provided with the inclined section, the flat section extends horizontally, and the inclined section extends obliquely towards the direction close to the vehicle body floor away from the flat section.

6. The rear floor assembly of claim 4, wherein, Further comprising a cover plate extending along the first direction and connected with the vehicle body floor, the cover plate can cover the opening of the recess and form a cavity between the cover plate and the recess.

7. The rear floor assembly of claim 6, wherein, The cover plate comprises an upper connecting plate, a vertical plate and a lower connecting plate, the upper and lower connecting plates are arranged horizontally, and the vertical plate is arranged vertically, one side of the upper connecting plate is connected with the vehicle body floor and located on the side of the recess away from the spare tire pit, one end of the vertical plate is connected with the other side of the upper connecting plate, one side of the lower connecting plate is connected with the other end of the vertical plate, and the lower connecting plate is connected with the bottom surface of the recess.

8. The rear floor assembly of claim 7, wherein, The connection part of the upper connecting plate with the vehicle body floor is opposite to the connection part of the front support plate with the vehicle body floor, and the connection part of the lower connecting plate with the vehicle body floor is opposite to the connection part of the rear support plate with the vehicle body floor.

9. The rear floor assembly of claim 3, wherein, Further comprising a mounting plate arranged in the spare tire pit and connected with the front inner side surface of the spare tire pit, and the mounting plate is spaced apart from the bottom surface of the spare tire pit, and a reinforcing plate arranged on the rear cross beam and connected with the front outer side surface of the spare tire pit.

10. The rear floor assembly of claim 9, wherein, The connection part of the reinforcing plate with the front outer side surface of the spare tire pit is opposite to the connection part of the mounting plate with the front inner side surface of the spare tire pit.

11. A vehicle characterized by comprising: The rear floor assembly according to any one of claims 1-10.

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