Vehicle and rear floor assembly

Abstract

According to the vehicle and the rear floor assembly, a rear floor assembly and a seat installation framework are integrated, a support does not need to be arranged, the occupied space is small, and a first floor section, located below the seat framework, of the rear floor assembly can be partially or completely arranged within the height range of the seat installation framework; in this way, a large space can be provided below the first floor section away from the seat installation framework, arrangement of other parts such as a battery can be optimized, installation of the seat installation framework is not limited by other structures of the seat, installation is easy and convenient, the position accuracy is high, follow-up seat installation in place is facilitated, and the installation efficiency is improved. The comfort of passengers is improved, and then the performance of the whole vehicle is improved.

Description

Technical Field

[0001] This application relates to the field of vehicles, and in particular to a vehicle and a rear floor assembly. Background Technology

[0002] Currently, rear floor structures mainly include components such as floor panels, rear wheel arches, rear bulkheads, and beam structures. There are generally two types of rear floor structures: one is an all-steel rear floor structure, where the floor is assembled from individual components (mainly including floor panels, rear wheel arches, rear bulkheads, and beam structures), with each component connected by welding and the joints sealed with adhesive. The other type is a split rear floor structure with small cast aluminum parts, which uses some cast aluminum components (such as rear longitudinal beams and rear floor crossbeams) to achieve weight reduction.

[0003] After the rear floor structure, welded into a single unit, arrives on site, it is then fixedly connected to the seat mounting frame at the bottom of the seat assembly to form a component. The rear floor structure requires the design of a bracket structure that cooperates with the seat mounting frame in the seat assembly. The structure is relatively complex, requires a large amount of space, and restricts the layout of other components in the vehicle.

[0004] Therefore, how to overcome the above-mentioned defects in the prior art is a technical problem that needs to be solved by those skilled in the art. Summary of the Invention

[0005] The purpose of this application is to provide a vehicle and a rear floor assembly in which the seat mounting frame and the rear floor component are integrated into one unit, which is conducive to forming a continuous structural path, improving the stress performance of the rear floor assembly, and thus improving the overall performance of the vehicle.

[0006] This application provides a rear floor assembly, characterized in that it includes the following components:

[0007] The rear floor assembly includes at least a first longitudinal beam, a second longitudinal beam, and at least one crossbeam, one end of which is connected to the first longitudinal beam and the other end of which is connected to the second longitudinal beam;

[0008] A seat mounting frame, which is integrated with the rear floor assembly;

[0009] The rear floor assembly also includes a first floor section corresponding to the seat mounting frame, the first floor section being at least partially located within the height range of the seat mounting frame.

[0010] In this embodiment, the seat mounting frame and the rear floor assembly are integrated into one unit, eliminating the need for a bracket and occupying minimal space. The first floor section corresponding to the seat frame can be installed close to the seat mounting frame, placing it partially or entirely within the height range of the seat mounting frame. This provides ample space below the seat mounting frame in the first floor section, facilitating the optimization of the arrangement of other components such as the battery. Furthermore, the installation of the seat mounting frame in this embodiment is not limited by other seat structures, making installation simple, convenient, and highly accurate, which is beneficial for subsequent seat installation, improving passenger comfort, and ultimately enhancing overall vehicle performance.

[0011] When the rear floor assembly in this embodiment is formed by die casting, the number of parts can be greatly reduced, production time can be saved, and production efficiency can be improved. Furthermore, the components formed by die casting are conducive to forming a continuous structural path and improving structural performance.

[0012] In one example, the first floor section is fixedly connected to or integrally formed with the first longitudinal beam and the second longitudinal beam on both sides, and a portion of the first floor section protrudes toward the seat mounting frame to extend into the height range of the seat mounting frame.

[0013] In one example, both the first and second longitudinal beams include connected sidewalls, bottom walls, and top walls. Along the width direction of the rear floor assembly, the top wall includes connected first horizontal segments, second horizontal segments, and inclined segments. The inclined segments connect the first and second horizontal segments. The first horizontal segments are connected to the sidewalls. The seat mounting frame has two frame longitudinal beams arranged along the width direction of the rear floor assembly. The frame longitudinal beams are supported on the inclined segments and / or the second horizontal segments on the corresponding sides. The two ends of the first floor segment are connected to the two first horizontal segments.

[0014] In one example, the first floor section is fixed or formed onto the seat mounting frame.

[0015] In one example, the seat mounting frame includes a first longitudinal beam, a second longitudinal beam, a first crossbeam, and a second crossbeam, which together form a frame. The first longitudinal beam is located on the first longitudinal beam, and the second longitudinal beam is located on the second longitudinal beam. The seat mounting frame is a frame structure, and the frame structure includes two longitudinal beams arranged along the width direction of the rear floor assembly. The two longitudinal beams are respectively supported by the first longitudinal beam and the second longitudinal beam, and the first floor section is connected to the inner peripheral wall of the frame.

[0016] In one example, at least one intermediate beam is provided between the two longitudinal beams of the frame, the intermediate beam dividing the frame into at least two sub-frames, the first floor section including at least two segments, and the inner peripheral wall of each sub-frame being connected to one of the segments.

[0017] In one example, both the first longitudinal beam and the second longitudinal beam include connected sidewalls, bottom walls, and top walls. Along the width direction of the rear floor assembly, the top wall includes connected first horizontal segments, second horizontal segments, and inclined segments. The inclined segments are connected between the first horizontal segments and the second horizontal segments. The first horizontal segments are connected to the sidewalls. The frame longitudinal beams are supported by the inclined segments and the second horizontal segments.

[0018] In one example, the second horizontal segment is further provided with an upwardly bent segment on the side away from the inclined segment.

[0019] In one example, the two frames of the seat mounting frame include a first frame crossbeam and a second frame crossbeam, the first frame crossbeam being located in front of the second frame crossbeam, and the upper surfaces of the first and second longitudinal beams having convex walls, the convex walls being fitted and connected to the outer side wall of the first frame crossbeam away from the second frame crossbeam.

[0020] In one example, along the longitudinal direction, the rear floor assembly includes a first section and a second section, the first section being lower in height than the second section, the seat mounting frame being integrated into the second section, the seat mounting frame being a seat mounting frame for the third row of seats in the vehicle, and the first section also having a mounting structure for mounting the second row of seats in the vehicle.

[0021] Furthermore, this application also provides a vehicle, including:

[0022] There are at least three rows of seats arranged longitudinally;

[0023] The rear floor assembly described in any of the above embodiments, wherein the seat mounting frame is the seat mounting frame for the third row of seats in the vehicle.

[0024] In this embodiment, the vehicle has the aforementioned rear floor assembly, and therefore the vehicle also has the aforementioned technical effects of the rear floor assembly. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the rear floor assembly provided in an embodiment of this application;

[0026] Figure 2 for Figure 1 Sectional view AA of the structure shown;

[0027] Figure 3This is a schematic diagram of the structure of a rear floor assembly provided in another embodiment of this application;

[0028] Figure 4 for Figure 3 Another schematic diagram of the rear floor assembly shown;

[0029] Figure 5 for Figure 3 A schematic diagram of the rear floor assembly from the side view.

[0030] Figure 6 for Figure 3 A bottom view of the rear floor assembly shown.

[0031] Figure 7 for Figure 3 Enlarged view of point A in the rear floor assembly;

[0032] Figure 8 for Figure 3 The diagram shows an enlarged view of point B in the rear floor assembly.

[0033] Appendix Figures 1 to 8 Marker explanation:

[0034] 1. Rear floor assembly; 101. First longitudinal beam; 1-1. Bottom wall; 1-2. Side wall; 1-3. Top wall; 1-31. First horizontal section; 1-33. Second horizontal section; 1-32. Inclined section; 1-34. Bending section; 1011. First flange; 102. Second longitudinal beam; 1021. Second flange; 103. First crossbeam; 104. Second crossbeam; 105. Third crossbeam; 106. First reinforcing beam; 107. Second reinforcing beam; 108. First rear wheel arch; 109 Second rear wheel cover; 110 Reinforcing rib plate; 10A Subframe mounting bracket; 10B Spring mounting bracket; 10D Sill plate interface; 10E Shock absorber mounting bracket; 10F Longitudinal beam interface; 10H Rear motor grounding mounting bracket; 10L Power supply unit mounting bracket; 10G Battery mounting bracket; 1111 First floor section; 11111 First segment; 11112 Second segment; 11113 Third segment; 11114 Fourth segment;

[0035] 2 Seat mounting frame; 201 First frame crossbeam; 202 Second frame crossbeam; 203 First frame longitudinal beam; 204 Second frame longitudinal beam; 205 Intermediate beam; 20A Mounting structure; 21 First sub-frame; 22 Second sub-frame; 23 Third sub-frame; 24 Fourth sub-frame. Detailed Implementation

[0036] To enable those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0037] Please refer to Figures 1 to 8 , Figure 1This is a schematic diagram of the rear floor assembly provided in an embodiment of this application; Figure 2 for Figure 1 Sectional view AA of the structure shown; Figure 3 This is a schematic diagram of the structure of a rear floor assembly provided in another embodiment of this application; Figure 4 for Figure 3 Another schematic diagram of the rear floor assembly shown; Figure 5 for Figure 3 A schematic diagram of the rear floor assembly from the side view. Figure 6 for Figure 3 A bottom view of the rear floor assembly shown. Figure 7 for Figure 3 Enlarged view of point A in the rear floor assembly; Figure 8 for Figure 3 The diagram shows an enlarged view of point B in the rear floor assembly. Figure 2 The dashed line in the middle indicates the connection position of the first floor section 1111.

[0038] The vehicle provided in this application embodiment includes a subframe, a rear floor assembly, and wheels. A subframe mounting bracket is provided on the rear floor assembly, and the subframe is connected to the subframe mounting bracket. The subframe and the rear floor assembly jointly support the wheels, which are typically four in number, but can also have more. The vehicle usually has at least two rows of seats; this article takes a vehicle with three rows of seats (a seven-seater) as an example to further introduce the technical solution and its effects. This article defines the side where the steering wheel is located as the front, and correspondingly, the direction away from the steering wheel (rear) is defined as the rear. From front to rear, the three rows of seats are defined as the first row, second row, and third row. The number and arrangement of the seats can be specifically set according to the vehicle model.

[0039] This application provides a rear floor assembly, including a rear floor component 1 and a seat mounting frame 2, wherein the rear floor component 1 and the seat mounting frame 2 are integrated into one piece. The components of the rear floor component 1 can be integrally formed by die casting. The rear floor component 1 includes at least a first longitudinal beam 101, a second longitudinal beam 102, and at least one crossbeam, one end of which is connected to the first longitudinal beam 101, and the other end of which is connected to the second longitudinal beam 102. The length direction of the first longitudinal beam 101 and the second longitudinal beam 102 is along the length direction of the vehicle; the length direction of the vehicle is defined as longitudinal, and the width direction of the vehicle is defined as transverse. The first longitudinal beam 101 and the second longitudinal beam 102 are arranged along the width direction of the vehicle. Each crossbeam extends transversely. The number and specific structure of the crossbeams can be determined according to the specific vehicle structure. Figure 1 The diagram shows three crossbeams, from front to back: second crossbeam 104, third crossbeam 105, and first crossbeam 103. Of course, the number of crossbeams is not limited to those shown in this diagram; any number that meets the usage requirements is acceptable.

[0040] To improve the strength of the rear floor assembly 1, the rear floor assembly 1 may also include a reinforcing structure, which may include flanges, reinforcing ribs, or reinforcing beams, etc. Figure 1 As shown, the first longitudinal beam 101 and the second longitudinal beam 102 have a first flange 1011 and a second flange 1021 respectively on their relatively distant sides. The first longitudinal beam 101 and the second longitudinal beam 102 can be hollow structures, with reinforcing ribs 110 arranged inside. A reinforcing beam can be provided between the second crossbeam 104 and the third crossbeam 105. The figure shows that the reinforcing beam includes a first reinforcing beam 106 and a second reinforcing beam 107. The second reinforcing beam connects the third crossbeam 105 and the second crossbeam 104, and the first reinforcing beam connects the second reinforcing beam and the second crossbeam 104, forming a roughly triangular structure to improve structural strength. The second crossbeam 104 has a first reinforcing beam 106 and a second reinforcing beam 107 at both ends. The reinforcing structure can be placed in areas where the component's strength is relatively weak to enhance the strength of that location. The form of the reinforcing structure is not limited to that described herein; it can be reasonably set according to the overall structure.

[0041] Each component in the rear floor assembly 1 can be made of aluminum.

[0042] In this embodiment, the seat typically includes a seat cushion, a backrest, and the aforementioned seat mounting frame 2. The upper surface of the seat cushion serves as the seating surface, and the seat mounting frame 2 is located below the seat cushion for securing it to the vehicle. Specifically, the seat mounting frame...

[0043] The frame 2 is provided with at least one mounting structure 20A for mounting a seat, to directly or indirectly fix the seat cushion. The mounting structure 20A can be disposed on the upper surface of the seat mounting frame 2 for easy installation. The mounting structure 20A can be directly formed on the seat mounting frame 2, or it can be disposed on the seat mounting frame 2 by machining or riveting. The rear floor assembly also includes a floor 111. Specifically, the floor 111 includes a first floor section 1111, which is used to seal the space corresponding to the seat mounting frame 2. That is, the first floor section 1111 is disposed corresponding to the seat mounting frame 2. In this embodiment, at least part of the first floor section 1111 can be located within the height range of the seat mounting frame 2. That is, at least part of the upper surface of the first floor section 1111 can be higher than the lowest position of the seat mounting frame 2, and can be partially or completely located within the height range of the seat mounting frame 2.

[0044] In this embodiment, the seat mounting frame 2 is integrated with the rear floor assembly 1, eliminating the need for a bracket on the rear floor assembly and saving height space. This allows for the installation height of the first floor section 1111 to be at least partially located within the height range of the seat mounting frame 2. Compared to the prior art where the first floor section 1111 is completely below the seat mounting frame 2, this provides more space away from the seat mounting frame 2, facilitating optimized placement of other components such as the battery. Furthermore, the installation of the seat mounting frame 2 in this embodiment is not limited by other seat structures, making installation simple, convenient, and highly accurate, which is beneficial for subsequent seat installation, improving passenger comfort and ultimately enhancing overall vehicle performance. In one example, the first floor section 1111 can also be integrally formed with the rear floor assembly 1, for example, the first floor section 1111 can be integrally formed or fixedly connected to the first longitudinal beams 101 and second longitudinal beams 102 on both sides. Please refer to [link to relevant documentation]. Figure 1 In the first floor section 1111, a portion of the plate protrudes towards the seat mounting frame 2 to extend into the height range of the seat mounting frame 2. Figure 1 Although the specific structure of the first floor section 1111 is not shown in the above description of this application, those skilled in the art can fully understand or implement the above technical solution.

[0045] This allows the floor 111 to be a single structure, and the rear floor component 1 can be integrally formed by casting, resulting in a compact structure and simpler molding process.

[0046] Of course, the first floor section 1111 can be directly formed on the seat mounting frame 2, that is, the first floor section 1111 can be integrally formed with the seat mounting frame 2 through a casting process.

[0047] When the rear floor assembly 1 in this embodiment is formed by die casting, the number of parts can be greatly reduced, production time can be saved, and production efficiency can be improved. Furthermore, the assembly formed by die casting is conducive to forming a continuous structural path and improving structural performance.

[0048] In this embodiment, the components of the seat mounting frame 2 and the components of the rear floor assembly 1 are integrally formed by die casting. That is, the components of the seat mounting frame 2 and the rear floor assembly 1 are formed by die casting to achieve integration. In this embodiment, the components of the seat mounting frame 2 and the components of the rear floor assembly 1 form a single, integrated component to the greatest extent possible. The structural path of this integrated component is interrupted as little as possible, resulting in good performance and eliminating the need for subsequent assembly, thus improving the overall vehicle assembly efficiency.

[0049] In this embodiment, the components of the seat mounting frame 2 can be made of aluminum.

[0050] In another embodiment, to reduce the difficulty of die casting, the seat mounting frame 2 and the rear floor assembly 1 are separate structures. The components of the seat mounting frame 2 are assembled or formed into a single structure through die casting, and then integrated with the rear floor assembly 1 during the die casting process. In this embodiment, the components of the seat mounting frame 2 can be pre-formed through machining or die casting, and then the seat mounting frame 2 is placed into the casting mold cavity of the rear floor assembly 1. Simultaneously with the die casting of the rear floor assembly, the connection between the seat mounting frame 2 and the rear floor assembly 1 is completed, forming them into a single unit.

[0051] Of course, the seat mounting frame 2 and the rear floor assembly 1 can also be connected as a single unit by at least one of the following methods: screwing, self-piercing riveting (SPR), flow-drill riveting (FDS), or welding. Those skilled in the art can reasonably choose the specific connection location. This connection method offers high flexibility, allowing adjustment of the relative positions of the seat mounting frame 2 and the rear floor assembly 1 to improve the installation accuracy after integration.

[0052] In this embodiment, the rear floor assembly 1 is also die-cast to form as many mounting seats as possible to meet the needs of the vehicle design, eliminating the need for subsequent assembly. The types of mounting seats can be determined according to the specific structure of the vehicle. For example, mounting seats can include main frame mounting structures, such as: shock absorber mounting seat 10E, subframe mounting seat 10A, spring seat mounting seat 10B, rear motor grounding mounting seat 10H, battery mounting seat 10G, or power device mounting seat 10L. Of course, mounting seats can also include interior trim panels, brackets, a series of electronic modules, vehicle tools, cup holders, and other non-main frame mounting structures.

[0053] Among them, a block can be die-cast at the corresponding position of the rear floor assembly 1, and a shock absorber mounting seat 10E, a subframe mounting seat 10A, a spring seat mounting seat 10B, a rear motor grounding mounting seat 10H, a battery mounting seat 10G, or a power supply device mounting seat 10L can be formed on the block.

[0054] In addition, the rear floor assembly 1 can also be directly formed with longitudinal beam interface 10F and sill interface 10D by die casting process.

[0055] To improve the integration of the rear floor assembly 1, a first rear wheel arch 108 can be formed on the upper surface of the first longitudinal beam 101, and a second rear wheel arch 109 can be formed on the upper surface of the second longitudinal beam 102. The first rear wheel arch 108 and the second rear wheel arch 109 have roughly the same structure and are symmetrically arranged along the longitudinal plane of the vehicle center.

[0056] The seat mounting frame 2 also has various structures. The following text presents one specific structural form of the seat mounting frame 2.

[0057] In this embodiment, the seat mounting frame 2 includes two longitudinal beams and two transverse beams, which together form a frame structure. The first floor section 1111 is connected to the inner peripheral wall of the frame structure. In this embodiment, the first floor section 1111 can be an integral structure, which is relatively simple in structure and molding process.

[0058] In this embodiment, two frame longitudinal beams can be supported on the first longitudinal beam 101 and the second longitudinal beam 102, respectively. The two frame longitudinal beams are defined as the first frame longitudinal beam 203 and the second frame longitudinal beam 204, respectively. The first frame longitudinal beam 203 is located on the first longitudinal beam 101; the second frame longitudinal beam 204 is located on the second longitudinal beam 102. Mounting structures 20A are provided on the first frame longitudinal beam 203 and the second frame longitudinal beam 204. The first frame longitudinal beam 203 is directly supported on the first longitudinal beam 101, and the second frame longitudinal beam 204 is directly supported on the second longitudinal beam 102, resulting in high support stability, which is beneficial to improving the stability of the vehicle after assembly.

[0059] In this embodiment, the two frame beams are defined as a first frame beam 201 and a second frame beam 202, respectively, extending approximately along the width (vehicle width) of the rear floor assembly. The first frame beam 201 is located in front of the second frame beam 202. The upper surfaces of the first and second longitudinal beams 101 and 102 have protruding walls 1012, which are fitted and connected to the outer side wall of the first frame beam 201 away from the second frame beam 202. The protruding walls 1012 can strengthen the structure and improve the stability of the first frame beam 201 after installation.

[0060] The convex wall 1012 can be welded to the outer wall of the first frame beam 201, or it can be die-cast. The shape of the convex wall 1012 can be reasonably set. Figure 7 The diagram shows that the convex wall 1012 is roughly triangular in shape, but it can also be other shapes.

[0061] Regarding the number of rear seats, at least one intermediate beam 205 is also provided between the first frame longitudinal beam 203 and the second frame longitudinal beam 204. Figure 1 and Figure 2 The diagram shows three intermediate beams 205, with the two ends of each intermediate beam 205 connected to the first frame crossbeam 201 and the second frame crossbeam 202, respectively. A mounting structure 20A is provided at one end of the intermediate beam 205 away from the first frame crossbeam 201. This satisfies the installation requirements of multiple rear seats.

[0062] The intermediate beam 205 divides the frame structure into at least two sub-frames. The first floor section includes at least two segments, and the inner peripheral wall of each sub-frame is connected to one segment. Figure 2 It is understood that in this embodiment of the application, there are three intermediate beams 205, and the structures of the three beams may be different or the same. The three intermediate beams 205 divide the frame structure into four sub-frames, namely: the first sub-frame 21, the second sub-frame 22, the third sub-frame 23, and the fourth sub-frame 24.

[0063] In the embodiment where the first floor section 1111 is fixed or formed on the seat mounting frame 2, the first floor section 1111 includes: a first segment 11111, a second segment 11112, a third segment 11113, and a fourth segment 11114. The first segment 11111 is installed on the inner peripheral wall of the first sub-frame 21, the second segment 11112 is installed on the inner peripheral wall of the second sub-frame 22, the third segment 11113 is installed on the inner peripheral wall of the third sub-frame 23, and the fourth segment 11114 is installed on the inner peripheral wall of the fourth sub-frame 24. In this embodiment, each segment can be integrally formed with each beam on the seat mounting frame 2 through a casting process. Of course, each segment can also be formed separately and fixed to the seat mounting frame 2 by welding or other methods. In this way, the fixed installation of the first floor section 1111 is achieved while meeting the usage requirements of the seat mounting frame 2.

[0064] To further improve the strength of the seat mounting frame 2, at least one end of the first frame longitudinal beam 203 has a flange, which is connected and fixed to the side wall of the first frame crossbeam 201 or the second frame crossbeam 202. In this example, the flange increases the strength of the first frame longitudinal beam 203 to a certain extent and increases the connection area between the first frame longitudinal beam 203 and the first frame crossbeam 201 or the second frame crossbeam 202, thereby improving the stability of the connection position.

[0065] Furthermore, in one specific example, the front end of the first frame longitudinal beam 203 has a flange, which is connected and fixed to the side wall of the first frame cross beam 201, and the first frame longitudinal beam 203 has a rear end extending longitudinally to form the second frame cross beam 202.

[0066] In addition, at least one end of the intermediate beam 205 has a flange, which is connected and fixed to the side wall of the first frame beam 201 or the second frame beam 202.

[0067] All of the above methods can achieve the purpose of improving the connection strength at the connection point.

[0068] In the above embodiments, both the first longitudinal beam 101 and the second longitudinal beam 102 include connected sidewalls 1-2, bottom walls 1-1, and top walls 1-3. Along the width direction of the rear floor assembly, the top wall 1-3 includes connected first horizontal segment 1-31, second horizontal segment 1-33, and inclined segment 1-32. The inclined segment 1-32 connects the first horizontal segment 1-31 and the second horizontal segment 1-33. The first horizontal segment 1-31 is connected to the sidewall 1-2. At least a portion of the frame longitudinal beam is simultaneously supported by the inclined segment 1-32 and the second horizontal segment 1-33. Of course, the frame longitudinal beam may also have sections that are supported only by the inclined segment 1-32 or the second horizontal segment 1-33, depending on the specific structure, as long as the fixing reliability of the seat mounting frame 2 can be satisfied.

[0069] To further increase the strength of the longitudinal beam, in one example, the second horizontal segment is also provided with an upwardly bent section 1-34 on the side away from the inclined segment.

[0070] In this embodiment, along the longitudinal direction, the rear floor assembly 1 includes a first section 1-1 and a second section 1-2. The height of the first section 1-1 is lower than that of the second section 1-2. The seat mounting frame 2 is integrated into the second section 1-2. The seat mounting frame 2 is the third row seat of the vehicle. The first section 1-1 also has a mounting structure for the second row seat of the vehicle. Figure 1 Looking at the middle, the first rear wheel cover 108 and the second rear wheel cover 109 are also roughly located in the second section 1-2.

[0071] from Figure 1 As can be seen, floor 111 also includes a second floor section 1112 and a third floor section 1113, both located in the first section 1-1. The second floor section 1112 is located below the second-row seats, and the third floor section 1113 is approximately located in front of the third-row seats, allowing passengers in the third row to place their feet in this section. The second floor section 1112 can be integrally cast with the first longitudinal beam 101 and the second longitudinal beam 102, or it can be formed separately and fixed to the corresponding position of the rear floor assembly by welding or screws. Similarly, the third floor section 1113 can be integrally cast with the first longitudinal beam 101 and the second longitudinal beam 102, or it can be formed separately and fixed to the corresponding position of the rear floor assembly by welding or screws.

[0072] This application also provides a vehicle including at least three rows of seats arranged longitudinally, and a rear floor assembly as described in any of the above claims, wherein the seat mounting frame 2 is the seat mounting frame 2 for the third row of seats of the vehicle.

[0073] The vehicle in this application includes the aforementioned rear floor assembly, and therefore the vehicle also has the aforementioned technical effects of the rear floor assembly.

[0074] For other vehicle structures described in this application embodiment, please refer to the prior art; they will not be elaborated upon here.

[0075] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. "Fixed connection" refers to a connection where the relative positional relationship remains unchanged after the connection.

[0076] The directional terms used in the embodiments of this application, such as "front" and "rear," are merely for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of this application, 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 the embodiments of this application. Furthermore, unless otherwise stated in this application, "multiple" as used in this application refers to two or more.

[0077] In the description of embodiments of this application, the term "comprising" or any other variations thereof is intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0078] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of this application. It should be noted that those skilled in the art can make several improvements and modifications to this application without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of the claims of this application.

Claims

1. A rear floor assembly characterized by, The application relates to a rear floor assembly (1) comprising at least a first longitudinal beam (101), a second longitudinal beam (102) and at least one cross beam, one end of the cross beam being connected to the first longitudinal beam (101) and the other end being connected to the second longitudinal beam (102); a seat mounting frame (2) integrated with the rear floor assembly (1); the rear floor assembly further comprising a first floor section corresponding to the seat mounting frame, the first floor section being at least partially located within the height range of the seat mounting frame. The first floor section (1111) is fixedly connected or integrally formed with the first longitudinal beam and the second longitudinal beam on both sides, and part of the plate body of the first floor section (1111) protrudes towards one side of the seat mounting frame (2) to extend into the height range area of the seat mounting frame (2). The first longitudinal beam (101) and the second longitudinal beam (102) each comprise a side wall (1-2), a bottom wall (1-1) and a top wall (1-3) connected in sequence, along the width direction of the rear floor assembly, the top wall (1-3) comprises a first horizontal section (1-31), a second horizontal section (1-33) and an inclined section (1-32) connected between the first horizontal section (1-31) and the second horizontal section (1-33), the first horizontal section (1-31) is connected with the side wall (1-2), two frame longitudinal beams of the seat mounting frame are arranged along the width direction of the rear floor assembly, the frame longitudinal beams are supported on the inclined section (1-32) or / and the second horizontal section (1-33) of the corresponding side, and both ends of the first floor section (1111) are connected to the two first horizontal sections (1-31). The first floor section (1111) is fixedly connected or integrally formed with the seat mounting frame (2).

2. The rear floor assembly of claim 1, wherein, The seat mounting frame comprises two frame longitudinal beams and two frame cross beams, which form a frame structure, and the first floor section (1111) is connected to the inner circumferential wall of the frame structure.

3. The rear floor assembly of claim 2, wherein, At least one intermediate beam (205) is further arranged between the two frame longitudinal beams, the intermediate beam (205) divides the frame structure into at least two sub-frames, and the first floor section (1111) comprises at least two sub-sections, and the inner circumferential wall of each sub-frame is connected with one of the sub-sections.

4. The rear floor assembly of claim 1, wherein, The first longitudinal beam (101) and the second longitudinal beam (102) each comprise a side wall (1-2), a bottom wall (1-1) and a top wall (1-3) connected in sequence, along the width direction of the rear floor assembly, the top wall (1-3) comprises a first horizontal section (1-31), a second horizontal section (1-33) and an inclined section (1-32) connected between the first horizontal section (1-31) and the second horizontal section (1-33), the first horizontal section (1-31) is connected with the side wall, and the frame longitudinal beam is at least partially supported on the inclined section (1-32) and the second horizontal section (1-33).

5. The rear floor assembly of claim 4, wherein, ​ 6. The rear floor assembly of claim 5, wherein, ​ 7. The rear floor assembly of claim 6, wherein, ​ 8. The rear floor assembly of claim 3 or 7, wherein, The second horizontal section (1-33) is further provided with a bending section (1-34) bending upward away from one side of the inclined section (1-32).

9. The rear floor assembly of claim 8, wherein, The seat mounting framework (2) comprises a first framework cross beam (201) and a second framework cross beam (2021), the first framework cross beam (201) is located in front of the second framework cross beam (202), the upper surfaces of the first longitudinal beam (101) and the second longitudinal beam (102) are provided with convex walls, and the convex walls are connected with the outer side walls of the side of the first framework cross beam (201) away from the second framework cross beam (202).

10. The rear floor assembly of any of claims 1-6, wherein, In the longitudinal direction, the rear floor assembly (1) comprises a first section (1-1) and a second section (1-2), the height of the first section is lower than that of the second section (1-2), the seat mounting framework (2) is integrated in the second section (1-2), the seat mounting framework (2) is the seat mounting framework (2) of the third-row seats of the vehicle, and the first section is further provided with a mounting structure for mounting the second-row seats of the vehicle.

11. A vehicle characterized by comprising: Comprise: At least three rows of seats are arranged in the longitudinal direction; The rear floor assembly in any one of claims 1 to 10, wherein the seat mounting framework (2) is the seat mounting framework (2) of the third-row seats of the vehicle.

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