Rear floor assembly and vehicle
By setting upper and lower reinforcements in the rear floor assembly to form a snap-fit structure, the structural strength and energy absorption problems during rear-end collisions are solved, thereby improving the safety performance of the entire vehicle.
Patent Information
- Application Number
- CN202510860411.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-24
- Publication Date
- 2025-09-23
AI Technical Summary
In the prior art, the structural design of the rear part of the vehicle body has not been able to effectively solve or has not been able to effectively solve specific problems.
A rear floor assembly is provided, comprising a rear floor frame assembly, a reinforcement panel and a reinforcement component. Upper and lower reinforcements are provided in the intersection area of the reinforcement panel to form an upper and lower buckling structure, thereby enhancing the collision performance of the rear of the vehicle.
It improves the structural strength and collision performance of the rear of the vehicle, effectively absorbs collision energy, and improves the safety performance of the entire vehicle.
Smart Images
Figure CN120681240A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of vehicle technology, and in particular to a rear floor assembly and a vehicle. Background Art
[0002] With the rapid development of new energy vehicles, people are increasingly concerned about driving safety. Rear-end collisions are the most common type of accident, making the structural safety design of the rear end of the vehicle particularly important. Improving rear-end collision performance through effective structural design, and thereby effectively improving the safety performance of the entire vehicle, is a pressing issue. Summary of the Invention
[0003] The present application provides a rear floor assembly and a vehicle to improve the collision performance of the rear of the vehicle.
[0004] To solve the above technical problems, the first technical solution provided in this application is: a rear floor assembly, including a rear floor frame assembly, a reinforcement panel and at least one reinforcement component; the reinforcement panel includes a horizontal portion extending along the length direction of the vehicle and a vertical portion extending along the height direction of the vehicle, the horizontal portion and the vertical portion are arranged at an angle, and the horizontal portion is connected to one side of the rear floor frame assembly in the length direction of the vehicle through the vertical portion; the reinforcement component includes an upper reinforcement and a lower reinforcement, the upper reinforcement is connected to the side of the reinforcement panel in the height direction of the vehicle facing the rear floor frame assembly, and the lower reinforcement is connected to the side of the reinforcement panel in the height direction away from the rear floor frame assembly, the upper reinforcement and the reinforcement panel jointly define an upper reinforcement cavity, the lower reinforcement and the reinforcement panel jointly define a lower reinforcement cavity, and the upper reinforcement cavity and the lower reinforcement cavity respectively cover the intersection area of the horizontal portion and the vertical portion from both sides of the reinforcement panel.
[0005] According to one embodiment of the present application, along the length direction of the vehicle, the upper reinforcement cavity extends beyond the end of the reinforcement panel and covers a portion of the rear floor frame assembly, and the upper reinforcement cavity extends in an arc shape as a whole, and the upper reinforcement member protrudes away from the intersection area of the horizontal portion and the vertical portion as a whole and extends in an arc shape.
[0006] According to one embodiment of the present application, the upper reinforcement cavity extends along the length direction of the vehicle to the end of the reinforcement panel toward the rear floor frame assembly, the upper reinforcement extends in a plane as a whole, and the upper reinforcement is respectively arranged at an angle with the horizontal portion and the vertical portion.
[0007] According to one embodiment of the present application, along the length direction of the vehicle, the lower reinforcement extends from one end of the reinforcement panel to the other end, and correspondingly, the lower reinforcement cavity also extends from one end of the reinforcement panel to the other end; and / or, along the length direction of the vehicle, the upper reinforcement is connected to the intersection area of the horizontal portion and the vertical portion of the reinforcement panel and is spaced apart from the end of the reinforcement panel away from the rear floor frame assembly.
[0008] According to one embodiment of the present application, at least one of the upper reinforcement and the lower reinforcement is overlapped with the rear floor frame assembly.
[0009] According to one embodiment of the present application, a plurality of reinforcement assemblies are arranged at intervals along the width direction of the vehicle, and the plurality of reinforcement assemblies include a first reinforcement assembly, a second reinforcement assembly and a third reinforcement assembly, and the first reinforcement assembly is located in the middle of the reinforcement panel in the width direction of the vehicle, and the second reinforcement assembly and the third reinforcement assembly are respectively located on both sides of the first reinforcement assembly; the first reinforcement assembly includes a first upper reinforcement member and a first lower reinforcement member, the first upper reinforcement member and the reinforcement panel jointly define a first upper reinforcement cavity, and the first lower reinforcement member and the reinforcement panel jointly define a first lower reinforcement cavity; the second reinforcement assembly includes a second upper reinforcement member and a second lower reinforcement member, the second upper reinforcement member and the reinforcement panel jointly define a second upper reinforcement cavity, and the second lower reinforcement member and the reinforcement panel jointly define a second lower reinforcement cavity; the third reinforcement assembly includes a third upper reinforcement member and a third lower reinforcement member, the third upper reinforcement member and the reinforcement panel jointly define a third upper reinforcement cavity, and the third lower reinforcement member and the reinforcement panel jointly define a third lower reinforcement cavity.
[0010] According to one embodiment of the present application, along the length direction of the vehicle, the first upper reinforcement cavity extends beyond the end of the reinforcement panel and covers a portion of the rear floor frame assembly, and the second upper reinforcement cavity and the third upper reinforcement cavity extend to the end of the reinforcement panel.
[0011] According to one embodiment of the present application, the cross-section of the first lower reinforcing cavity in the vehicle height direction is larger than the cross-section of the second lower reinforcing cavity and the cross-section of the third lower reinforcing cavity in the vehicle height direction.
[0012] According to one embodiment of the present application, the rear floor assembly also includes an anti-collision beam assembly, which includes an anti-collision beam body and anti-collision beam connectors respectively connected to the two ends of the anti-collision beam body, and the anti-collision beam assembly is connected to the rear floor frame assembly through the anti-collision beam connector; the anti-collision beam body extends in an arc shape along the width direction of the vehicle; and / or, an anti-collision reinforcement cavity is formed inside the anti-collision beam connector; and / or, in the length direction of the vehicle, the surface of the anti-collision beam body facing away from the reinforcement panel is concave to form a collision energy absorption cavity.
[0013] In order to solve the above technical problems, the second technical solution provided in this application is: a vehicle, comprising a rear floor assembly of any of the above solutions.
[0014] The beneficial effects of this application are:
[0015] The rear floor assembly and the vehicle having the same provided by the present application have upper and lower reinforcements forming an upper and lower relative snap-fitting structure in the intersection area of the horizontal portion and the vertical portion of the reinforcement panel. The upper and lower snap-fitting structures can comprehensively improve the collision performance of the rear floor assembly in the reinforcement panel area, effectively improving the structural strength of the entire rear floor assembly. At the same time, the upper reinforcement cavity jointly defined by the upper reinforcement and the reinforcement panel and the lower reinforcement cavity jointly defined by the lower reinforcement and the reinforcement panel respectively cover the intersection area of the horizontal portion and the vertical portion from both sides of the reinforcement panel. The intersection area of the horizontal portion and the vertical portion of the reinforcement panel can be reinforced by the upper reinforcement cavity and the lower reinforcement cavity, which can effectively absorb energy when a collision occurs at the rear of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present application. Those skilled in the art can also derive other drawings based on these drawings without inventive work, among which:
[0017] Figure 1 is a schematic diagram of the exploded structure of an embodiment of the rear floor assembly provided by the present application;
[0018] Figure 2 is a schematic top view of the rear floor assembly according to an embodiment of the present application;
[0019] Figure 3 is a bottom view structural schematic diagram of an embodiment of a rear floor assembly provided by the present application;
[0020] Figure 4 yes Figures 1 to 3 A three-dimensional schematic diagram of the assembly structure of the reinforcement panel and reinforcement components in the rear floor assembly;
[0021] Figure 5 yes Figure 4 A schematic diagram of a three-dimensional structure from another perspective;
[0022] Figure 6 yes Figure 2 and Figure 3 A partial schematic diagram of the AA section;
[0023] Figure 7 yes Figure 3 A partial schematic diagram of the BB section;
[0024] Figure 8 yes Figure 3 A partial schematic diagram of the CC section;
[0025] Figure 9 yes Figure 2Schematic diagram of the structure after removing the reinforcement panel and rear floor panel;
[0026] Figure 10 yes Figure 9 Partial schematic diagram of the middle DD section;
[0027] Figure 11 yes Figures 1 to 3 as well as Figure 9 A schematic diagram of the three-dimensional structure of the first longitudinal beam or the second longitudinal beam;
[0028] Figure 12 yes Figure 11 a schematic diagram of an exploded structure of the first longitudinal beam or the second longitudinal beam;
[0029] Figure 13 yes Figure 11 a top view of the first longitudinal beam or the second longitudinal beam;
[0030] Figure 14 yes Figure 13 Partial schematic diagram of the EE section;
[0031] Figure 15 yes Figures 1 to 3 A schematic diagram of the three-dimensional structure of the anti-collision beam assembly in the rear floor assembly;
[0032] Figure 16 yes Figure 15 Schematic diagram of the exploded structure of the anti-collision beam assembly;
[0033] Figure 17 yes Figure 15 A schematic top view of an anti-collision beam assembly;
[0034] Figure 18 yes Figure 17 Partial schematic diagram of the FF section;
[0035] Figure 19 yes Figure 17 Partial schematic diagram of the GG section.
[0036] Description of reference numerals:
[0037] 10. Anti-collision beam assembly; 101. Anti-collision beam assembly end plate; 102. Anti-collision beam upper plate; 103. Anti-collision beam lower plate; 104. Anti-collision beam body; 1043. Collision energy absorption cavity; 105. Longitudinal beam assembly connecting bolts; 106. Anti-collision beam assembly welding area; 107. Anti-collision beam connecting piece; 20. Longitudinal beam assembly; 20a. First longitudinal beam; 20b. Second longitudinal beam; 201. First longitudinal beam reinforcement plate; 202. Second longitudinal beam reinforcement plate; 203. Longitudinal beam end plate; 204. First longitudinal beam outer plate; 205. Second longitudinal beam outer plate; 206. Longitudinal beam connecting bolts; 30. Second lower reinforcement; 40. First lower reinforcement; 50. Third lower reinforcement; 60. Second upper reinforcement; 70. First upper reinforcement; 80. Third upper reinforcement Strengthening member; 90, reinforcing panel; 91, horizontal part; 92, vertical part; 100, rear floor frame assembly; 110, rear floor panel; 120, collision reinforcement flange; 130, first lower reinforcement cavity; 140, first upper reinforcement cavity; 150, second lower reinforcement cavity; 160, second upper reinforcement cavity; 170, third lower reinforcement cavity; 180, third upper reinforcement cavity; 190, second longitudinal beam reinforcement cavity; 200, first longitudinal beam reinforcement cavity; 210, anti-collision reinforcement cavity; 300, reinforcement assembly; 310, upper reinforcement; 320, lower reinforcement; 301, upper reinforcement cavity; 302, lower reinforcement cavity; 300a, first reinforcement assembly; 300b, second reinforcement assembly; 300c, third reinforcement assembly. DETAILED DESCRIPTION
[0038] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.
[0039] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.
[0040] This application provides a rear floor assembly. In one embodiment, please refer to Figures 1 to 3 , Figure 1 is a schematic diagram of the exploded structure of an embodiment of the rear floor assembly provided by this application, Figure 2 is a schematic top view of the rear floor assembly according to an embodiment of the present invention. Figure 3This is a bottom view of the rear floor assembly of the present invention, which comprises a rear floor frame assembly 100, a reinforcement panel 90 and at least one reinforcement component 300; Figure 4 and Figure 5 , Figure 4 yes Figures 1 to 3 A perspective diagram of the assembly structure of the reinforcement panel 90 and the reinforcement component 300 in the rear floor assembly, Figure 5 yes Figure 4 Schematic diagram of the three-dimensional structure from another perspective, the reinforcement panel 90 includes a horizontal portion 91 extending along the length direction of the vehicle and a vertical portion 92 extending along the height direction of the vehicle, the horizontal portion 91 and the vertical portion 92 are arranged at an angle, and the horizontal portion 91 is connected to one side of the rear floor frame assembly 100 in the length direction of the vehicle through the vertical portion 92; the reinforcement assembly 300 includes an upper reinforcement 310 and a lower reinforcement 320, the upper reinforcement 310 is connected to the side of the reinforcement panel 90 facing the rear floor frame assembly 100 in the height direction of the vehicle, and the lower reinforcement 320 is connected to the side of the reinforcement panel 90 facing away from the rear floor frame assembly 100 in the height direction of the vehicle, Figures 6 to 8 , Figure 6 yes Figure 2 and Figure 3 A partial schematic diagram of the AA section, Figure 7 yes Figure 3 A partial schematic diagram of the BB section, Figure 8 yes Figure 3 The upper reinforcement 310 and the reinforcement panel 90 together define an upper reinforcement cavity 301, and the lower reinforcement 320 and the reinforcement panel 90 together define a lower reinforcement cavity 302. The upper reinforcement cavity 301 and the lower reinforcement cavity 302 respectively cover the intersection area of the horizontal portion 91 and the vertical portion 92 from both sides of the reinforcement panel 90.
[0041] For the convenience of explanation, in each of the drawings, the length direction of the vehicle is denoted as the X direction, the width direction of the vehicle is denoted as the Y direction, and the height direction of the vehicle is denoted as the Z direction.
[0042] The rear floor frame assembly 100 forms the main framework of the rear floor assembly. It can be die-cast in one piece and made of aluminum or magnesium alloy, offering high structural strength and effective load-bearing capabilities. For example, a rear floor panel 110 is attached to the inside of the rear floor frame assembly 100. The rear floor panel 110 can be snap-fitted to the top of the rear floor frame assembly 100, with the portion of the rear floor panel 110 that overlaps the rear floor frame assembly 100 located below the upper reinforcement 310.
[0043] The reinforcement panel 90 serves to connect the upper reinforcement 310 and the lower reinforcement 320. At the same time, the reinforcement panel 90 is connected to the rear floor frame assembly 100 to form a structural frame, which comprehensively improves the collision performance. The reinforcement panel 90 can be a large-area plate. The reinforcement panel 90 can also be used as a storage function. For example, the horizontal portion 91 and the vertical portion 92 of the reinforcement panel 90 together form a storage space for luggage. The intersection area of the horizontal portion 91 and the vertical portion 92 can be arranged in an arc shape to better transfer collision energy. In some embodiments, along the length direction of the vehicle, a collision reinforcement flange 120 can be provided at one end of the reinforcement panel 90 away from the rear floor frame assembly 100, which can effectively increase the collision contact area during a rear collision of the vehicle, thereby better bearing the load.
[0044] The upper and lower reinforcements 310 and 320 form a vertically opposed interlocking structure at the intersection of the horizontal portion 91 and the vertical portion 92 of the reinforcement panel 90. This interlocking structure comprehensively improves the collision performance of the rear floor assembly within the reinforcement panel 90, effectively enhancing the structural strength of the entire rear floor assembly. For example, the upper and lower reinforcements 310 and 320 may be made of hot-formed steel.
[0045] The intersection area of the horizontal portion 91 and the vertical portion 92 of the reinforcement panel 90 may be understood as the root of the reinforcement panel 90 .
[0046] The upper reinforcement cavity 301 defined by the upper reinforcement 310 and the reinforcement panel 90 is used to absorb collision energy when a collision occurs at the rear of the vehicle. The lower reinforcement cavity 302 defined by the lower reinforcement 320 and the reinforcement panel 90 is used to absorb collision energy when a collision occurs at the rear of the vehicle. The upper reinforcement cavity 301 and the lower reinforcement cavity 302 respectively cover the intersection area of the horizontal portion 91 and the vertical portion 92 from both sides of the reinforcement panel 90. The intersection area of the horizontal portion 91 and the vertical portion 92 of the reinforcement panel 90 is the root of the reinforcement panel 90, which is reinforced by the interlocking upper reinforcement cavity 301 and the lower reinforcement cavity 302, and can effectively absorb energy when a collision occurs at the rear of the vehicle.
[0047] Figure 2 and Figure 3 The arrow in the figure indicates the direction of the rear collision of the vehicle.
[0048] In the rear floor assembly provided in the present application, the upper reinforcement 310 and the lower reinforcement 320 form an upper and lower relative snap-fitting structure at the intersection of the horizontal portion 91 and the vertical portion 92 of the reinforcement panel 90. The upper and lower snap-fitting structure can comprehensively improve the collision performance of the rear floor assembly in the reinforcement panel 90 area, effectively improving the structural strength of the entire rear floor assembly. At the same time, the upper reinforcement cavity 301 jointly defined by the upper reinforcement 310 and the reinforcement panel 90 and the lower reinforcement cavity 302 jointly defined by the lower reinforcement 320 and the reinforcement panel 90 respectively cover the intersection of the horizontal portion 91 and the vertical portion 92 from both sides of the reinforcement panel 90. The intersection of the horizontal portion 91 and the vertical portion 92 of the reinforcement panel 90 can be reinforced by the upper reinforcement cavity 301 and the lower reinforcement cavity 302, which can effectively absorb energy when a collision occurs at the rear of the vehicle.
[0049] In the related art, no reinforcement is provided at the root of the reinforcement panel 90 or a reinforcement is provided only on one side of the root of the reinforcement panel 90. The root strength of the reinforcement panel 90 is low and cannot effectively resist the collision energy. However, the present application provides reinforcements on both sides of the root of the reinforcement panel 90, namely an upper reinforcement 310 and a lower reinforcement 320. The upper reinforcement 310 and the lower reinforcement 320 are buckled together to form a double frame structure at the root of the reinforcement panel 90, which can improve the structural strength of the root of the reinforcement panel 90 and effectively resist the collision energy. The upper reinforcement 310 and the lower reinforcement 320 correspondingly form two energy-absorbing cavities located at the root of the reinforcement panel 90, namely an upper reinforcement cavity 301 and a lower reinforcement cavity 302, which can effectively absorb the collision energy at the root of the reinforcement panel 90.
[0050] The upper side referred to in the present application refers to the side of the horizontal portion 91 of the reinforcing panel 90 facing the rear floor frame assembly 100 in the height direction of the vehicle, the lower side referred to in the present application refers to the side of the horizontal portion 91 of the reinforcing panel 90 facing away from the rear floor frame assembly 100 in the height direction of the vehicle, and the rear side referred to in the present application refers to the side of the reinforcing panel 90 facing away from the rear floor frame assembly 100 in the length direction of the vehicle.
[0051] The connection involved in this application can be, but is not limited to, welding, snap-fitting, bolt connection and other connection methods.
[0052] In some embodiments, along the length direction of the vehicle, the upper reinforcement cavity 301 extends beyond the end of the reinforcement panel 90 and covers a portion of the rear floor frame assembly 100, and the upper reinforcement cavity 301 extends in an arc shape as a whole, and the upper reinforcement 310 is protruded away from the intersection area of the horizontal portion 91 and the vertical portion 92 and extends in an arc shape as a whole.
[0053] In this embodiment, the upper reinforcement 310 extends in an arc shape as a whole. Correspondingly, the upper reinforcement cavity 301 also extends in an arc shape and extends beyond the end of the reinforcement panel 90 and covers a portion of the rear floor frame assembly 100. In this way, the remaining energy transmitted from the lower reinforcement cavity 302 can be induced to turn and transmitted according to the arc trend of the upper reinforcement cavity 301. Firstly, it can effectively absorb energy, so that the collision energy is weakened during the turning process, and secondly, it can effectively transfer the remaining energy to the rear floor frame assembly 100.
[0054] In some embodiments, along the length direction of the vehicle, the upper reinforcement cavity 301 extends to the end of the reinforcement panel 90 toward the rear floor frame assembly 100, the upper reinforcement 310 extends in a plane as a whole, and the upper reinforcement 310 is respectively arranged at an angle to the horizontal portion 91 and the vertical portion 92.
[0055] In this embodiment, the upper reinforcement cavity 301 formed corresponding to the upper reinforcement member 310 can absorb the collision energy transmitted by the lower reinforcement cavity 302, thereby achieving effective energy absorption.
[0056] When there are multiple upper reinforcements 310, some of the upper reinforcements 310 may extend in an arc shape as a whole, and other upper reinforcements 310 may extend in a plane as a whole, or all of the upper reinforcements 310 may extend in an arc shape as a whole, or all of the upper reinforcements 310 may extend in a plane as a whole.
[0057] In some embodiments, the lower reinforcement member 320 and the upper reinforcement cavity 301 partially overlap along the extension direction of the root of the reinforcement panel 90 . This structure can further improve the structural strength of the root of the reinforcement panel 90 .
[0058] In some embodiments, along the length direction of the vehicle, the lower reinforcement member 320 extends from one end of the reinforcement panel 90 to the other end, and correspondingly, the lower reinforcement cavity 302 also extends from one end of the reinforcement panel 90 to the other end.
[0059] In this embodiment, the lower reinforcement 320 and the lower reinforcement cavity 302 penetrate the entire area of the reinforcement panel 90 in the longitudinal direction of the vehicle, which can effectively improve the structural strength of the reinforcement panel 90 in the longitudinal direction of the vehicle and effectively absorb energy in the collision direction.
[0060] When there are multiple lower reinforcements 320, along the length direction of the vehicle, a portion of the lower reinforcements 320 and the corresponding lower reinforcement cavities 302 may extend from one end of the reinforcement panel 90 to the other end, or all of the lower reinforcements 320 and the corresponding lower reinforcement cavities 302 may extend from one end of the reinforcement panel 90 to the other end.
[0061] In some embodiments, along the length direction of the vehicle, the upper reinforcement 310 is connected to the intersection of the horizontal portion 91 and the vertical portion 92 of the reinforcement panel 90 and is spaced apart from an end of the reinforcement panel 90 away from the rear floor frame assembly 100 .
[0062] In this embodiment, the upper reinforcement 310 is located only at the base of the reinforcement panel 90, rather than extending through the entire length of the reinforcement panel 90. This is because the base of the reinforcement panel 90 is weaker than other areas and has a lower ability to resist collision energy, requiring greater reinforcement. Therefore, the upper reinforcement 310 is located only at the base of the reinforcement panel 90 to improve the structural strength and collision resistance of the base of the reinforcement panel 90. In other embodiments, the upper reinforcement 310 may extend along the length of the vehicle to the end of the reinforcement panel 90 away from the rear floor frame assembly 100.
[0063] In some embodiments, at least one of the upper reinforcement 310 and the lower reinforcement 320 is overlapped with the rear floor frame assembly 100 .
[0064] Exemplarily, the upper reinforcement 310 overlaps the rear floor frame assembly 100, while the lower reinforcement 320 does not overlap the rear floor frame assembly 100; or the upper reinforcement 310 does not overlap the rear floor frame assembly 100, while the lower reinforcement 320 overlaps the rear floor frame assembly 100; or both the upper reinforcement 310 and the lower reinforcement 320 overlap the rear floor frame assembly 100.
[0065] When both the upper reinforcement 310 and the lower reinforcement 320 are overlapped with the rear floor frame assembly 100 , the collision energy transfer effect is better, so it is preferred that both the upper reinforcement 310 and the lower reinforcement 320 are overlapped with the rear floor frame assembly 100 .
[0066] When there are multiple upper reinforcements 310 and lower reinforcements 320, some of the upper reinforcements 310 and lower reinforcements 320 may be overlapped with the rear floor frame assembly 100, while other parts of the upper reinforcements 310 and lower reinforcements 320 are not overlapped with the rear floor frame assembly 100, or all of the upper reinforcements 310 and lower reinforcements 320 may be overlapped with the rear floor frame assembly 100.
[0067] In this embodiment, at least one of the upper reinforcement 310 and the lower reinforcement 320 is overlapped with the rear floor frame assembly 100, thereby enabling the transfer of collision energy between the upper reinforcement 310 and the rear floor frame assembly 100, as well as the transfer of collision energy between the lower reinforcement 320 and the rear floor frame assembly 100. That is, when a collision occurs at the rear of the vehicle, the collision energy is transferred from the reinforcement panel 90 to the rear floor frame assembly 100, and the collision energy transferred by the reinforcement panel 90 can also be transferred to the rear floor frame assembly 100 by at least one of the upper reinforcement 310 and the lower reinforcement 320, further achieving effective transfer and reduction of collision energy.
[0068] In some embodiments, multiple reinforcement assemblies 300 are arranged at intervals along the width direction of the vehicle, and the multiple reinforcement assemblies 300 include a first reinforcement assembly 300a, a second reinforcement assembly 300b and a third reinforcement assembly 300c, and the first reinforcement assembly 300a is located in the middle of the reinforcement panel 90 in the width direction of the vehicle, and the second reinforcement assembly 300b and the third reinforcement assembly 300c are respectively located on both sides of the first reinforcement assembly 300a.
[0069] See also Figure 9 , Figure 9 yes Figure 2 Schematic diagram of the structure after removing the reinforcement panel 90 and the rear floor panel 110, the first reinforcement assembly 300a includes a first upper reinforcement 70 and a first lower reinforcement 40, the first upper reinforcement 70 and the reinforcement panel 90 together define a first upper reinforcement cavity 140, and the first lower reinforcement 40 and the reinforcement panel 90 together define a first lower reinforcement cavity 130.
[0070] Since the first reinforcement assembly 300a is located in the middle of the reinforcement panel 90 in the width direction of the vehicle, the first upper reinforcement 70 and the first lower reinforcement 40 of the first reinforcement assembly 300a are used to improve the structural strength of the middle of the reinforcement panel 90 in the width direction of the vehicle, and can also enable the first upper reinforcement cavity 140 and the first lower reinforcement cavity 130 to be located in the middle of the reinforcement panel 90 in the width direction of the vehicle, which can effectively face the collision energy and then effectively absorb energy.
[0071] Along the length direction of the vehicle, the first lower reinforcement 40 and the first lower reinforcement cavity 130 may extend from one end of the reinforcement panel 90 to the other end to maximize the reinforcement effect of the first lower reinforcement 40 and the first lower reinforcement cavity 130 on the reinforcement panel 90 .
[0072] The second reinforcement assembly 300 b includes a second upper reinforcement 60 and a second lower reinforcement 30 . The second upper reinforcement 60 and the reinforcement panel 90 together define a second upper reinforcement cavity 160 . The second lower reinforcement 30 and the reinforcement panel 90 together define a second lower reinforcement cavity 150 .
[0073] The second upper reinforcement 60 and the second lower reinforcement 30 are used to enhance the structural strength of the side portion of the reinforcement panel 90. The second upper reinforcement cavity 160 and the second lower reinforcement cavity 150 are used to transfer collision energy from the rear end of the vehicle, effectively absorbing the energy during a rear-end side collision. For example, the second reinforcement assembly 300b can be located at one-third of the width of the reinforcement panel 90 in the vehicle's width direction, so that the first upper reinforcement cavity 140 and the first lower reinforcement cavity 130 are also located at one-third of the width of the reinforcement panel 90 in the vehicle's width direction. This location is the point of maximum load-bearing in a rear-end side collision, effectively receiving the energy from the rear-end side collision and effectively absorbing the energy.
[0074] Along the length direction of the vehicle, the second lower reinforcement 30 and the second lower reinforcement cavity 150 may extend from one end of the reinforcement panel 90 to the other end to maximize the reinforcement effect of the second lower reinforcement 30 and the second lower reinforcement cavity 150 on the reinforcement panel 90 .
[0075] The third reinforcement assembly 300 c includes a third upper reinforcement 80 and a third lower reinforcement 50 . The third upper reinforcement 80 and the reinforcement panel 90 together define a third upper reinforcement cavity 180 . The third lower reinforcement 50 and the reinforcement panel 90 together define a third lower reinforcement cavity 170 .
[0076] The third upper reinforcement 80 and the third lower reinforcement 50 are used to enhance the structural strength of the side portion of the reinforcement panel 90. The third upper reinforcement cavity 180 and the third lower reinforcement cavity 170 are used to transfer collision energy from the rear end of the vehicle, effectively absorbing energy during a rear end side collision. For example, the third upper reinforcement 80 and the third lower reinforcement 50 of the third reinforcement assembly 300c can be located at two-thirds of the width of the reinforcement panel 90 in the vehicle width direction. This allows the third upper reinforcement cavity 180 and the third lower reinforcement cavity 170 to also be located at two-thirds of the width of the reinforcement panel 90 in the vehicle width direction. This location is the point of maximum load-bearing during a rear end side collision, effectively transmitting the collision energy from the rear end of the vehicle and effectively absorbing the energy.
[0077] The third lower reinforcement member 50 and the third lower reinforcement cavity 170 may extend from one end of the reinforcement panel 90 to the other end, so as to maximize the reinforcement effect of the third lower reinforcement member 50 and the third lower reinforcement cavity 170 on the reinforcement panel 90 .
[0078] The three groups of reinforcement components 300 of this embodiment can effectively improve the structural strength of the reinforcement panel 90, and the upper reinforcement cavity 301 and the lower reinforcement cavity 302 of the three groups of reinforcement components 300 can effectively absorb the energy of the rear collision of the vehicle.
[0079] In other embodiments, the number of reinforcement assemblies 300 may be other than three, such as two or four. Furthermore, the specific positions of the reinforcement assemblies 300 on the reinforcement panel 90 along the width direction of the vehicle may be selected as needed, and are not limited to the arrangement in this embodiment where one reinforcement assembly 300 is positioned in the middle of the reinforcement panel 90 and the other two reinforcement assemblies 300 are positioned at one-third and two-thirds of the reinforcement panel 90, respectively.
[0080] In some embodiments, along the length direction of the vehicle, the first upper reinforcement cavity 140 extends beyond the end of the reinforcement panel 90 and covers a portion of the rear floor frame assembly 100 , and the second upper reinforcement cavity 160 and the third upper reinforcement cavity 180 extend to the end of the reinforcement panel 90 .
[0081] In this embodiment, the extension length of the first upper reinforcing cavity 140 is greater than the extension length of the second upper reinforcing cavity 160 and the third upper reinforcing cavity 180, and is more suitable for the middle part of the reinforcing panel 90 in the width direction of the vehicle as the maximum load-bearing area. The first upper reinforcing cavity 140 can effectively transfer larger collision energy to the rear floor frame assembly 100.
[0082] Correspondingly, along the length direction of the vehicle, the first upper reinforcement 70 extends beyond the end of the reinforcement panel 90 and covers a portion of the rear floor frame assembly 100 , so that the first upper reinforcement cavity 140 extends beyond the end of the reinforcement panel 90 and covers a portion of the rear floor frame assembly 100 .
[0083] The second upper reinforcement 60 and the third upper reinforcement 80 extend to the end of the reinforcement panel 90, so that the second upper reinforcement cavity 160 and the third upper reinforcement cavity 180 extend to the end of the reinforcement panel 90. The second upper reinforcement 60 can further extend to overlap the rear floor frame assembly 100 to improve the collision energy transfer effect between the reinforcement panel 90 and the rear floor frame assembly 100.
[0084] As an example, the first upper reinforcement member 70 is protruded as a whole away from the intersection area of the horizontal portion 91 and the vertical portion 92 of the reinforcement panel 90 and extends in an arc shape, so that the first upper reinforcement cavity 140 extends in an arc shape as a whole. In this way, the residual energy transmitted from the first lower reinforcement cavity 130 can be induced to turn and transmitted according to the arc trend of the first upper reinforcement cavity 140. Firstly, it can effectively absorb energy so that the collision energy is weakened during the turning process, and secondly, it can effectively transfer the residual energy to the rear floor frame assembly 100.
[0085] The second upper reinforcement 60 and the third upper reinforcement 80 extend in a plane as a whole, and the second upper reinforcement 60 and the third upper reinforcement 80 are both arranged at an angle to the horizontal portion 91 and the vertical portion 92 of the reinforcement panel 90. The second upper reinforcement cavity 160 formed corresponding to the second upper reinforcement 60 can absorb the collision energy transmitted by the second lower reinforcement cavity 150, and the third upper reinforcement cavity 180 formed corresponding to the third upper reinforcement 80 can absorb the collision energy transmitted by the third lower reinforcement cavity 170, thereby achieving effective energy absorption.
[0086] In other embodiments, the shapes and sizes of the second upper reinforcement 60 and the third upper reinforcement 80 may be set to be the same as those of the first upper reinforcement 70 , so that the second upper reinforcement cavity 160 and the third upper reinforcement cavity 180 also extend in an arc shape as a whole.
[0087] In some embodiments, the cross-section of the first lower reinforcement cavity 130 in the vehicle height direction is larger than the cross-sections of the second lower reinforcement cavity 150 and the third lower reinforcement cavity 170 in the vehicle height direction.
[0088] The cross sections of the first lower reinforcement cavity 130 , the second lower reinforcement cavity 150 , and the third lower reinforcement cavity 170 are cross sections perpendicular to the width direction of the vehicle.
[0089] In this embodiment, since the first lower reinforcing cavity 130 is located in the middle of the reinforcing panel 90 in the width direction of the vehicle, it is the maximum load-bearing area during a collision. The cross-sectional size of the first lower reinforcing cavity 130 is larger than the cross-sectional sizes of the second lower reinforcing cavity 150 and the third lower reinforcing cavity 170 on both sides thereof, and can better absorb larger collision energy.
[0090] In some embodiments, the rear floor assembly further includes a longitudinal beam assembly 20, which is connected to one side of the rear floor frame assembly 100 in the longitudinal direction of the vehicle. The longitudinal beam assembly 20 includes a first longitudinal beam 20a and a second longitudinal beam 20b extending along the longitudinal direction of the vehicle. The first longitudinal beam 20a and the second longitudinal beam 20b are respectively connected to the two ends of the rear floor frame assembly 100 in the width direction of the vehicle, and each reinforcement assembly 300 is located between the first longitudinal beam 20a and the second longitudinal beam 20b. The reinforcement panel 90 is connected between the first longitudinal beam 20a and the second longitudinal beam 20b.
[0091] The longitudinal beam assembly 20 is used to connect the rear floor frame assembly 100 with the anti-collision beam assembly 10 described below. When a rear-end collision occurs, the anti-collision beam assembly 10 serves as the first contact component, and the collision energy is transferred from the anti-collision beam assembly 10 to the longitudinal beam assembly 20, and then from the longitudinal beam assembly 20 to the rear floor frame assembly 100. Specifically, the first longitudinal beam 20a is connected to one of the anti-collision beam connectors 107 of the anti-collision beam assembly 10, and the second longitudinal beam 20b is connected to the other anti-collision beam connector 107 of the anti-collision beam assembly 10. The collision energy transmitted from the anti-collision beam body 104 of the anti-collision beam assembly 10 is transferred to the first longitudinal beam 20a and the second longitudinal beam 20b through the two anti-collision beam connectors 107, and then transferred from the first longitudinal beam 20a and the second longitudinal beam 20b to the rear floor frame assembly 100.
[0092] In addition, the first longitudinal beam 20a and the second longitudinal beam 20b also serve as the boundary of the area where the reinforcement panel 90 is located in the width direction of the vehicle. The first longitudinal beam 20a and the second longitudinal beam 20b can be effectively connected in the width direction of the vehicle through the reinforcement panel 90. When a collision occurs at the rear of the vehicle, the reinforcement panel 90 can realize the effective transfer of the collision energy in the width direction of the vehicle between the first longitudinal beam 20a and the second longitudinal beam 20b, thereby achieving effective resistance to the collision energy.
[0093] See also Figures 10 to 14 , Figure 10 yes Figure 9 Partial schematic diagram of the DD section, Figure 11 yes Figures 1 to 3 as well as Figure 9 A schematic diagram of the three-dimensional structure of the first longitudinal beam 20a or the second longitudinal beam 20b, Figure 12 yes Figure 11 A schematic diagram of the exploded structure of the first longitudinal beam 20a or the second longitudinal beam 20b, Figure 13 yes Figure 11 A top view of the first longitudinal beam 20a or the second longitudinal beam 20b, Figure 14 yes Figure 13 A partial schematic diagram of the EE section. In some embodiments, the first longitudinal beam 20a and the second longitudinal beam 20b both include a first longitudinal beam outer plate 204 and a second longitudinal beam outer plate 205. The first longitudinal beam outer plate 204 and the second longitudinal beam outer plate 205 together form the main frame of the first longitudinal beam 20a / the second longitudinal beam 20b. Exemplarily, the first longitudinal beam outer plate 204 and the second longitudinal beam outer plate 205 are both L-shaped plates. The first longitudinal beam outer plate 204 and the second longitudinal beam outer plate 205 are buckled together to form the first longitudinal beam 20a / the second longitudinal beam 20b which is an overall rectangular shape.
[0094] The first longitudinal beam outer panel 204 and the second longitudinal beam outer panel 205 can be connected to the rear floor frame assembly 100 via longitudinal beam connecting bolts 206. The longitudinal beam connecting bolts 206 can be located at positions where the first longitudinal beam outer panel 204 and the second longitudinal beam outer panel 205 are adjacent to the rear floor frame assembly 100, thereby achieving connection and fixation between the first longitudinal beam 20a / the second longitudinal beam 20b and the rear floor frame assembly 100.
[0095] In some embodiments, the first longitudinal beam 20a / the second longitudinal beam 20b further includes a first longitudinal beam reinforcement plate 201, a second longitudinal beam reinforcement plate 202, and a longitudinal beam end plate 203. Along the length direction of the vehicle, the longitudinal beam end plate 203 is connected to the first longitudinal beam outer plate 204 and the second longitudinal beam outer plate 205 at one end away from the rear floor frame assembly 100. The first longitudinal beam reinforcement plate 201 is located inside the first longitudinal beam 20a / the second longitudinal beam 20b, and the second longitudinal beam reinforcement plate 202 is located between the first longitudinal beam reinforcement plate 201 and the longitudinal beam end plate 203.
[0096] Among them, the first longitudinal beam reinforcement plate 201 is used to strengthen the structural strength of the first longitudinal beam 20a / second longitudinal beam 20b on the side close to the rear floor frame assembly 100, thereby improving the collision and obstacle avoidance capabilities of the first longitudinal beam 20a / second longitudinal beam 20b on the side close to the rear floor frame assembly 100.
[0097] The second longitudinal beam reinforcement plate 202 is used to strengthen the structural strength of the first longitudinal beam 20a / second longitudinal beam 20b on the side away from the rear floor frame assembly 100, thereby improving the collision and obstacle avoidance capability of the first longitudinal beam 20a / second longitudinal beam 20b on the side away from the rear floor frame assembly 100.
[0098] The first longitudinal beam reinforcement plate 201 is hidden in the cavity formed by the first longitudinal beam outer plate 204 and the second longitudinal beam outer plate 205; the second longitudinal beam reinforcement plate 202 extends from the cavity formed by the first longitudinal beam outer plate 204 and the second longitudinal beam outer plate 205 to the outside of the cavity. Specifically, the part of the second longitudinal beam reinforcement plate 202 located in the cavity formed by the first longitudinal beam outer plate 204 and the second longitudinal beam outer plate 205 fits the inner walls of the first longitudinal beam outer plate 204 and the second longitudinal beam outer plate 205, so that the second longitudinal beam reinforcement plate 202 has a large overlap with the first longitudinal beam outer plate 204 and the second longitudinal beam outer plate 205, which can effectively improve the connection strength. The part of the second longitudinal beam reinforcement plate 202 located outside the cavity formed by the first longitudinal beam outer plate 204 and the second longitudinal beam outer plate 205 forms a flange for connecting the longitudinal beam end plate 203.
[0099] The longitudinal beam end plate 203 is used to achieve the connection and fixation between the first longitudinal beam 20a / the second longitudinal beam 20b and the anti-collision beam assembly 10. Specifically, the longitudinal beam end plate 203 can be a large-area steel plate, and the flange of the second longitudinal beam reinforcement plate 202 is welded and fixed to the longitudinal beam end plate 203. The anti-collision beam assembly end plate 101 of the anti-collision beam assembly 10 described below can be fixed to the longitudinal beam end plate 203 by the longitudinal beam assembly connecting bolts 105, thereby achieving the connection and fixation between the first longitudinal beam 20a / the second longitudinal beam 20b and the anti-collision beam assembly 10.
[0100] In some embodiments, a first longitudinal beam reinforcement cavity 200 is formed within the first and second longitudinal beams 20a, 20b. The first longitudinal beam reinforcement cavity 200 is formed by the first longitudinal beam outer panel 204, the second longitudinal beam outer panel 205, the second longitudinal beam reinforcement plate 202, and the longitudinal beam end panel 203. The first longitudinal beam reinforcement cavity 200 serves as the primary energy absorption area for the first and second longitudinal beams 20a, 20b. The cross-sectional area of the longitudinal beam end panel 203 is larger than that of the first longitudinal beam reinforcement cavity 200, thereby increasing the collision contact area between the first and second longitudinal beams 20a, 20b.
[0101] In some embodiments, the first longitudinal beam outer panel 204, the second longitudinal beam outer panel 205, the first longitudinal beam reinforcement plate 201 and the rear floor frame assembly 100 also jointly form a second longitudinal beam reinforcement cavity 190. The second longitudinal beam reinforcement cavity 190 is located on the side of the first longitudinal beam 20a / second longitudinal beam 20b close to the rear floor frame assembly 100, that is, the second longitudinal beam reinforcement cavity 190 is located at the root of the first longitudinal beam 20a / second longitudinal beam 20b, which can achieve attenuation of collision energy when it is transferred from the first longitudinal beam 20a / second longitudinal beam 20b to the rear floor frame assembly 100.
[0102] In some embodiments, the rear floor assembly further includes an anti-collision beam assembly 10, see Figures 15 to 19 , Figure 15 yes Figures 1 to 3 A schematic diagram of the three-dimensional structure of the anti-collision beam assembly 10 in the rear floor assembly, Figure 16 yes Figure 15 Schematic diagram of the exploded structure of the anti-collision beam assembly 10, Figure 17 yes Figure 15 A schematic top view of the anti-collision beam assembly 10 is provided. Figure 18 yes Figure 17 Partial schematic diagram of the FF section, Figure 19 yes Figure 17 A partial schematic diagram of the middle GG section shows that the anti-collision beam assembly 10 includes an anti-collision beam body 104 and anti-collision beam connectors 107 respectively connected to both ends of the anti-collision beam body 104. The anti-collision beam assembly 10 is connected to the rear floor frame assembly 100 through the anti-collision beam connector 107, and the anti-collision beam body 104 extends in an arc shape along the width direction of the vehicle.
[0103] Among them, the anti-collision beam body 104 of the anti-collision beam assembly 10 is the first contact component of the rear collision of the vehicle. For example, the anti-collision beam body 104 can be the first main load-bearing component under medium and low speed collision conditions. The anti-collision beam body 104 can be a high-strength steel plate. The cross-section of the anti-collision beam body 104 is "U"-shaped, so that the anti-collision beam body 104 has a high structural strength. The anti-collision beam body 104 extends in an arc shape along the width direction of the vehicle as a whole. When a collision occurs at the rear of the vehicle, the collision energy can be absorbed by the expansion and contraction deformation of the anti-collision beam body 104, thereby improving the collision performance.
[0104] The two anti-collision beam connectors 107 are respectively used to connect the first longitudinal beam 20a and the second longitudinal beam 20b, so that the collision energy of the anti-collision beam body 104 can be transmitted to the first longitudinal beam 20a and the second longitudinal beam 20b through the two anti-collision beam connectors 107, and then to the rear floor frame assembly 100. The structural framework formed by the anti-collision beam body 104, the two anti-collision beam connectors 107, the first longitudinal beam 20a, the second longitudinal beam 20b, and the rear floor frame assembly 100 can effectively transmit collision energy and achieve a gradual reduction in collision energy.
[0105] In some embodiments, the anti-collision beam connecting member 107 includes an anti-collision beam assembly end plate 101, an anti-collision beam upper plate 102 and an anti-collision beam lower plate 103. The anti-collision beam upper plate 102 and the anti-collision beam lower plate 103 are connected by upper and lower buckling in the height direction of the vehicle. Specifically, the anti-collision beam upper plate 102 and the anti-collision beam lower plate 103 have an overlapping area, which is the anti-collision beam assembly welding area 106. The anti-collision beam upper plate 102 and the anti-collision beam lower plate 103 are welded and fixed in this area. The anti-collision beam assembly end plate 101 can be welded. The anti-collision beam assembly end plate 101, the anti-collision beam upper plate 102, the anti-collision beam lower plate 103 and the anti-collision beam body 104 can be welded together to form an integrated anti-collision beam assembly 10, and the anti-collision beam assembly 10 is further connected to the first longitudinal beam 20a / the second longitudinal beam 20b through the longitudinal beam assembly connecting bolts 105.
[0106] In some embodiments, an anti-collision reinforcement cavity 210 is formed inside the anti-collision beam connector 107 , and the anti-collision reinforcement cavity 210 is formed by the anti-collision beam assembly end plate 101 , the anti-collision beam upper plate 102 , the anti-collision beam lower plate 103 and the anti-collision beam body 104 .
[0107] In some embodiments, the cross-sectional area of the first longitudinal beam reinforcement cavity 200 is larger than the cross-sectional area of the anti-collision reinforcement cavity 210. When a collision occurs at the rear of the vehicle, the collision energy is transferred from the anti-collision reinforcement cavity 210 to the first longitudinal beam reinforcement cavity 200, so that the collision energy can be absorbed in a decreasing manner, resulting in a good energy absorption effect.
[0108] In some embodiments, in the longitudinal direction of the vehicle, the surface of the anti-collision beam body 104 facing away from the reinforcement panel 90 is recessed to form a collision energy absorbing cavity 1043. The collision energy absorbing cavity 1043 further enhances the collision energy absorption effect. The collision energy absorbing cavity 1043 is formed by the recessed surface of the anti-collision beam body 104, so that the surface of the anti-collision beam body 104 facing away from the reinforcement panel 90 is a non-flat surface, which can improve the structural strength of the anti-collision beam body 104.
[0109] This application also provides a vehicle including the aforementioned rear floor assembly. The specific structure of the rear floor assembly is similar to that of the aforementioned embodiments. Since this vehicle utilizes all of the technical solutions of these embodiments, it possesses at least all of the beneficial effects of the technical solutions of these embodiments, and therefore will not be further elaborated here. The vehicle may be a fuel-powered vehicle, a gas-powered vehicle, or a new energy vehicle. The new energy vehicle may be a pure electric vehicle, a hybrid vehicle, or an extended-range vehicle.
[0110] The terms "first", "second" and "third" in this application are used for descriptive purposes only and should not be understood as indicating the number of technical features indicated. Thus, the features defined as "first", "second" and "third" may explicitly or implicitly include at least one of such features. All directional indications in the embodiments of this application (such as up, down, left, right, front, back...) are only used to explain the relative positional relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.
[0111] The above description is merely an embodiment of the present application and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.
Claims
1. A rear floor assembly, characterized in that: include: rear floor frame assembly (100); A reinforcement panel (90) includes a horizontal portion extending in the longitudinal direction of the vehicle and a vertical portion extending in the height direction of the vehicle, wherein the horizontal portion (91) and the vertical portion (92) are arranged at an angle, and the horizontal portion (91) is connected to one side of the rear floor frame assembly (100) in the longitudinal direction of the vehicle through the vertical portion (92); At least one reinforcement assembly (300) includes an upper reinforcement member (310) and a lower reinforcement member (320), wherein the upper reinforcement member (310) is connected to a side of the reinforcement panel (90) facing the rear floor frame assembly (100) in the height direction of the vehicle, and the lower reinforcement member (320) is connected to a side of the reinforcement panel (90) facing away from the rear floor frame assembly (100) in the height direction of the vehicle, the upper reinforcement member (310) and the reinforcement panel (90) jointly define an upper reinforcement cavity (301), and the lower reinforcement member (320) and the reinforcement panel (90) jointly define a lower reinforcement cavity (302), and the upper reinforcement cavity (301) and the lower reinforcement cavity (302) respectively cover the intersection area of the horizontal portion (91) and the vertical portion (92) from both sides of the reinforcement panel (90).
2. The rear floor assembly according to claim 1, characterized in that: Along the length direction of the vehicle, the upper reinforcement cavity (301) extends beyond the end of the reinforcement panel (90) and covers a portion of the rear floor frame assembly (100), and the upper reinforcement cavity (301) extends in an arc shape as a whole, and the upper reinforcement (310) is protruded away from the intersection area of the horizontal portion (91) and the vertical portion (92) as a whole and extends in an arc shape.
3. The rear floor assembly according to claim 1, characterized in that: Along the length direction of the vehicle, the upper reinforcement cavity (301) extends to the end of the reinforcement panel (90) toward the rear floor frame assembly (100), the upper reinforcement (310) extends in a plane as a whole, and the upper reinforcement (310) is respectively arranged at an angle with the horizontal portion (91) and the vertical portion (92).
4. The rear floor assembly according to claim 1, characterized in that: Along the length direction of the vehicle, the lower reinforcement member (320) extends from one end of the reinforcement panel (90) to the other end, and correspondingly, the lower reinforcement cavity (302) also extends from one end of the reinforcement panel (90) to the other end; and / or, Along the length direction of the vehicle, the upper reinforcement (310) is connected to the intersection area of the horizontal portion (91) and the vertical portion (92) of the reinforcement panel (90) and is spaced apart from one end of the reinforcement panel (90) away from the rear floor frame assembly (100).
5. The rear floor assembly according to claim 1, characterized in that: At least one of the upper reinforcement (310) and the lower reinforcement (320) is overlapped with the rear floor frame assembly (100).
6. The rear floor assembly according to claim 1, characterized in that: Along the width direction of the vehicle, a plurality of the reinforcing assemblies (300) are arranged at intervals, and the plurality of the reinforcing assemblies (300) include a first reinforcing assembly (300a), a second reinforcing assembly (300b), and a third reinforcing assembly (300c), and the first reinforcing assembly (300a) is located in the middle of the reinforcing panel (90) in the width direction of the vehicle, and the second reinforcing assembly (300b) and the third reinforcing assembly (300c) are respectively located on both sides of the first reinforcing assembly (300a); The first reinforcement assembly (300a) includes a first upper reinforcement member (70) and a first lower reinforcement member (40), wherein the first upper reinforcement member (70) and the reinforcement panel (90) jointly define a first upper reinforcement cavity (140), and the first lower reinforcement member (40) and the reinforcement panel (90) jointly define a first lower reinforcement cavity (130); The second reinforcement assembly (300b) includes a second upper reinforcement member (60) and a second lower reinforcement member (30), wherein the second upper reinforcement member (60) and the reinforcement panel (90) together define a second upper reinforcement cavity (160), and the second lower reinforcement member (30) and the reinforcement panel (90) together define a second lower reinforcement cavity (150); The third reinforcement assembly (300c) includes a third upper reinforcement member (80) and a third lower reinforcement member (50), wherein the third upper reinforcement member (80) and the reinforcement panel (90) jointly define a third upper reinforcement cavity (180), and the third lower reinforcement member (50) and the reinforcement panel (90) jointly define a third lower reinforcement cavity (170).
7. The rear floor assembly according to claim 6, characterized in that: Along the length direction of the vehicle, the first upper reinforcement cavity (140) extends beyond the end of the reinforcement panel (90) and covers a portion of the rear floor frame assembly (100), and the second upper reinforcement cavity (160) and the third upper reinforcement cavity (180) extend to the end of the reinforcement panel (90).
8. The rear floor assembly according to claim 6, characterized in that: The size of the cross section of the first lower reinforcement cavity (130) in the height direction of the vehicle is larger than the size of the cross section of the second lower reinforcement cavity (150) in the height direction of the vehicle and the size of the cross section of the third lower reinforcement cavity (170) in the height direction of the vehicle.
9. The rear floor assembly according to claim 1, characterized in that: The rear floor assembly further includes: An anti-collision beam assembly (10) comprises an anti-collision beam body (104) and anti-collision beam connectors (107) respectively connected to both ends of the anti-collision beam body (104), wherein the anti-collision beam assembly (10) is connected to the rear floor frame assembly (100) via the anti-collision beam connectors (107); The anti-collision beam body (104) extends in an arc shape along the width direction of the vehicle; and / or, An anti-collision reinforcement cavity (210) is formed inside the anti-collision beam connecting member (107); and / or, In the longitudinal direction of the vehicle, the surface of the anti-collision beam body (104) facing away from the reinforcement panel (90) is recessed to form a collision energy absorbing cavity (1043).
10. A vehicle, characterized in that: The invention comprises the rear floor assembly according to any one of claims 1 to 9.