A vehicle floor assembly and a vehicle

Abstract

This application discloses a vehicle floor assembly and a vehicle. The vehicle floor assembly includes: a floor panel, a reinforcing bracket, and a reinforcing frame. The floor panel includes a first main surface and a second main surface disposed opposite to each other. The reinforcing bracket is disposed on the first main surface. The reinforcing frame is disposed on the second main surface. The reinforcing bracket includes a mounting protrusion for mounting a vehicle seat. The mounting protrusion cooperates with the first main surface to form a first reinforcing cavity. The reinforcing frame cooperates with the second main surface to form a second reinforcing cavity. The orthographic projection of the second reinforcing cavity on the first main surface and the orthographic projection of the first reinforcing cavity on the first main surface at least partially overlap. Through the above embodiment, the strength of the reinforcing bracket is enhanced, effectively improving the strength of the entire frame structure.

Description

Technical Field

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

[0002] In the field of automotive component technology, the design of many bracket structures is often involved to enable the installation of components. These bracket structures often require a reasonable frame structure for support in order to withstand greater installation strength.

[0003] Existing technologies include designs for floor support structures that can accommodate the installation of some components, but the overlapping design of the frame structure is unreasonable, resulting in low stability of the entire frame structure and weak overall structural strength. Utility Model Content

[0004] The main objective of this application is to provide a vehicle floor assembly and a vehicle to solve the technical problem of weak structural strength of vehicle floors in the prior art.

[0005] To address the aforementioned technical problems, this application provides a vehicle floor assembly, comprising: a floor panel, a reinforcing bracket, and a reinforcing frame. The floor panel includes a first main surface and a second main surface disposed opposite to each other. The reinforcing bracket is disposed on the first main surface, and the reinforcing frame is disposed on the second main surface. The reinforcing bracket includes a mounting protrusion for mounting a vehicle seat. The mounting protrusion cooperates with the first main surface to form a first reinforcing cavity, and the reinforcing frame cooperates with the second main surface to form a second reinforcing cavity. The orthographic projection of the second reinforcing cavity on the first main surface and the orthographic projection of the first reinforcing cavity on the first main surface at least partially overlap.

[0006] In one embodiment, the number of mounting protrusions is at least two, and the at least two mounting protrusions are spaced apart in the direction in which the second reinforcing cavity extends.

[0007] In one embodiment, the reinforcing bracket includes a first reinforcing protrusion located between two mounting protrusions in the direction of extension of the second reinforcing cavity. The first reinforcing protrusion cooperates with the first main surface to form a third reinforcing cavity. The height of the reinforcing protrusion protruding from the first main surface is lower than the height of each mounting protrusion protruding from the first main surface.

[0008] In one embodiment, the cross-section of the first reinforcing cavity on a reference plane perpendicular to the first main surface is trapezoidal, and the side length of the cavity cross-section closer to the first main surface is greater than the side length of the cavity cross-section farther from the first main surface.

[0009] In one embodiment, the reinforcing bracket includes a second reinforcing protrusion, which cooperates with the first main surface to form a fourth reinforcing cavity. The fourth reinforcing cavity and the first reinforcing cavity are spaced apart, and the height of the second reinforcing protrusion from the first main surface is higher than the height of each mounting protrusion from the first main surface.

[0010] In one embodiment, the reinforcing frame includes a transverse frame and two longitudinal frames, the transverse frame being connected between the two longitudinal frames, and the transverse frame cooperating with the second main surface to form a second reinforcing cavity.

[0011] In one embodiment, the floor panel overlaps both the transverse frame and two longitudinal frames.

[0012] In one embodiment, each longitudinal frame is formed with a recessed groove extending in the direction of the longitudinal frame, and the floor panel overlaps the edge of the recessed groove near the transverse frame.

[0013] In one embodiment, the groove opening faces the side where the floor panel is located, and the groove of each longitudinal frame is connected to the second reinforcing cavity.

[0014] To address the aforementioned issues, this application provides a vehicle that includes the vehicle floor assembly described above.

[0015] Compared with the prior art, the vehicle floor assembly of this application includes: a floor panel, a reinforcing bracket, and a reinforcing frame. The floor panel includes a first main surface and a second main surface disposed opposite to each other. The reinforcing bracket is disposed on the first main surface; the reinforcing frame is disposed on the second main surface. The reinforcing bracket includes a mounting protrusion for mounting a vehicle seat. The mounting protrusion cooperates with the first main surface to form a first reinforcing cavity, and the reinforcing frame cooperates with the second main surface to form a second reinforcing cavity. The orthographic projection of the second reinforcing cavity on the first main surface and the orthographic projection of the first reinforcing cavity on the first main surface at least partially overlap. Through the above embodiment, the mounting protrusion cooperates with the first main surface to form the first reinforcing cavity, and the reinforcing frame cooperates with the second main surface to form the second reinforcing cavity. Furthermore, the orthographic projection of the second reinforcing cavity on the first main surface and the orthographic projection of the first reinforcing cavity on the first main surface at least partially overlap. This effectively enhances the overall structural strength of the vehicle floor assembly through the first and second reinforcing cavities and their relative positional relationship. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of one embodiment of the vehicle provided in this application;

[0018] Figure 2 This is a schematic diagram of the structure of one embodiment of the vehicle floor assembly provided in this application;

[0019] Figure 3 This is a schematic diagram of the disassembled structure of the vehicle floor assembly provided in this application;

[0020] Figure 4 yes Figure 2 The diagram shows a cross-sectional view of the vehicle floor assembly along the AA direction.

[0021] Figure 5 yes Figure 2 The diagram shows a cross-sectional view of the vehicle floor assembly along the BB direction.

[0022] Figure 6 This is a structural schematic diagram of the reinforcing frame of the vehicle floor assembly provided in this application.

[0023] The reference numerals are as follows: vehicle 1; vehicle floor assembly 10; floor panel 100; first main surface 110; second main surface 120; reinforcing bracket 200; mounting protrusion 210; first reinforcing cavity 211; first reinforcing protrusion 220; second reinforcing protrusion 230; third reinforcing cavity 221; fourth reinforcing cavity 231; reinforcing frame 300; transverse frame 310; second reinforcing cavity 311; longitudinal frame 320; recessed groove 321. Detailed Implementation

[0024] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. It is understood that the specific embodiments described herein are only for explaining this application and not for limiting it. Furthermore, it should be noted that, for ease of description, only the parts related to this application are shown in the accompanying drawings, not all structures. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0025] The terms "first," "second," and "third" in this application are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationships and movements between components in a specific orientation (as shown in the figures). If the specific orientation changes, the directional indications also change accordingly. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or devices.

[0026] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0027] In the field of automotive component technology, the design of many bracket structures is often involved to enable the installation of components. These bracket structures often require a reasonable frame structure for support in order to withstand greater installation strength.

[0028] In related technologies, there are designs for floor support structures that can accommodate the installation of some components, but the overlapping design of the frame structure is unreasonable, the stability of the entire frame structure is not high, and the overall structural strength is weak.

[0029] To address at least one technical problem existing in related technologies, this application provides a vehicle floor assembly and a vehicle, see [link to relevant documentation]. Figure 1 , Figure 1 This is a schematic diagram of an embodiment of the vehicle provided in this application.

[0030] The vehicle includes a vehicle floor assembly 10, which serves as part of the vehicle's body structure and supports other components. The vehicle can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. Taking a new energy vehicle as an example, a battery device is installed inside the vehicle, which can be located at the bottom, front, or rear of the vehicle. The battery device can be used to power the vehicle; for example, it can serve as the vehicle's operating power source or mains power source.

[0031] See Figures 2 to 5 , Figure 2 This is a structural schematic diagram of one embodiment of the vehicle floor assembly provided in this application. Figure 3 This is a schematic diagram of the disassembled structure of the vehicle floor assembly provided in this application. Figure 4 yes Figure 2 The diagram shown is a cross-sectional view of the vehicle floor assembly along the AA direction. Figure 5 yes Figure 2 The diagram shows a cross-sectional view of the vehicle floor assembly along the BB direction.

[0032] The vehicle floor assembly 10 includes a floor panel 100, a reinforcing bracket 200, and a reinforcing frame 300. The floor panel 100 includes a first main surface 110 and a second main surface 120 disposed opposite to each other. The reinforcing bracket 200 is disposed on the first main surface 110. The reinforcing frame 300 is disposed on the second main surface 120. The reinforcing bracket 200 includes a mounting protrusion 210 for mounting a vehicle seat. The mounting protrusion 210 cooperates with the first main surface 110 to form a first reinforcing cavity 211. The reinforcing frame 300 cooperates with the second main surface 120 to form a second reinforcing cavity 311. The orthographic projection of the second reinforcing cavity 311 on the first main surface 110 and the orthographic projection of the first reinforcing cavity 211 on the first main surface 110 at least partially overlap.

[0033] The vehicle floor assembly can be used as part of the vehicle body structure. The floor panel 100 can be part of the vehicle chassis. The floor panel 100 can be plate-shaped and may have strip-shaped protrusions. The specific shape can be determined according to the actual situation. The first main surface 110 and the second main surface 120 of the floor panel 100 can be two surfaces of the floor panel 100 in the thickness direction. The first main surface 110 and the second main surface 120 can be understood as the two surfaces of the floor panel 100 with the largest area and arranged opposite to each other. It should be noted that the first main surface 110 and the second main surface 120 are not necessarily flat in an absolute sense. They can be two side surfaces of the floor panel 100 opposite to each other, such as the first main surface 100 and / or the second main surface 120 having an uneven shape.

[0034] The reinforcing bracket 200 can be a shell structure with protrusions of different shapes and sizes. These protrusions form different cavity structures with the floor panel 100, enhancing the strength of the reinforcing bracket 200. The inner wall of the reinforcing bracket 200 may also be provided with transition reinforcing ribs, further improving its strength and rigidity and reducing the risk of deformation. The protrusions are spaced with varying sizes; for example, two larger protrusions may be spaced between a relatively smaller one, or two smaller protrusions may be spaced between a relatively larger one. The reinforcing bracket 200 can be fixed to the first main surface of the floor panel 100 by welding, snap-fitting, or screwing. The mounting protrusions 210 on the reinforcing bracket 200 and the first main surface of the floor panel 100 form a first reinforcing cavity 211. The number, shape, and size of the mounting protrusions 210 can be set according to actual conditions, and their positions can be evenly or non-evenly distributed on the reinforcing bracket 200.

[0035] The reinforcing frame 300 is located on the side of the floor panel away from the reinforcing bracket 200, that is, the reinforcing frame 300 is located on the second main surface of the floor panel 100 to cooperate with the second main surface to form a second reinforcing cavity 311. The first reinforcing cavity 211 and the second reinforcing cavity 311 are designed to face each other, that is, the orthographic projection of the second reinforcing cavity 311 on the first main surface and the orthographic projection of the first reinforcing cavity 211 on the first main surface at least partially overlap, thereby effectively enhancing the overall structural strength of the vehicle floor assembly 10 through the first reinforcing cavity 211 and the second reinforcing cavity 311 and the relative positional relationship between them.

[0036] Furthermore, the number of mounting protrusions 210 is at least two, and the at least two mounting protrusions 210 are spaced apart in the direction of extension of the second reinforcing cavity 311. That is, the reinforcing bracket 200 includes at least two mounting protrusions 210, wherein the two mounting protrusions 210 are spaced apart along the extension direction of the second reinforcing cavity 311. In other words, at least two mounting protrusions 210 are arranged on one side of the reinforcing bracket 200, the arrangement direction is consistent with the extension direction of the second reinforcing cavity 311, and adjacent mounting protrusions are spaced apart. The mounting protrusions 210 are provided on the reinforcing bracket 200, which is expected to withstand greater pressure. The top of the mounting protrusion 210, that is, the side away from the floor panel 100, may have a hole through which automotive components can be installed. Such automotive components may include, but are not limited to, related fixing structures of vehicle seats. The automotive components can be inserted into the first reinforcing cavity 211 through the hole to be fixed to the reinforcing bracket 200.

[0037] Furthermore, the reinforcing bracket 200 includes a first reinforcing protrusion 220 located between two mounting protrusions 210 in the direction extending from the second reinforcing cavity 311. The first reinforcing protrusion 220 forms a third reinforcing cavity 221 in conjunction with the first main surface. The height of the first reinforcing protrusion 220 protruding from the first main surface is lower than the height of each mounting protrusion 210 protruding from the first main surface. The first reinforcing protrusions 220 are arranged on the side of the reinforcing bracket 200 away from the reinforcing frame 300, aligned with the direction of extension of the second reinforcing cavity 311, and positioned between the two mounting protrusions 210. The first reinforcing protrusion 220 and the first main surface of the floor panel 100 form the third reinforcing cavity 221, which is located between the two first reinforcing cavities 211 formed by the mounting protrusions 210. Specifically, the height of the mounting protrusion 210 protruding from the reinforcing bracket 200 is greater than the height of the first reinforcing cavity 211 protruding from the reinforcing bracket 200, and the upper and lower side lengths of the cross-section of the first reinforcing protrusion 220 on the reference plane perpendicular to the first main surface are smaller than the side lengths of the cross-section of the mounting protrusion 210 on the reference plane perpendicular to the first main surface. That is, the volume of the first reinforcing cavity 211 formed by the mounting protrusion 210 and the first main surface of the floor panel 100 is greater than the volume of the third reinforcing cavity formed by the first reinforcing protrusion 220 and the first main surface of the floor panel 100. The larger volume of the first reinforcing cavity 211 formed by the mounting bracket makes it easier to install heavier seats. The volume of the third reinforcing cavity 221 formed by the first reinforcing protrusion 220 is relatively smaller than that of the first reinforcing cavity 211, and it is located in the middle of the first reinforcing cavity 211. This can enhance the force transmission path between the two mounting protrusions 210, improve the force transmission continuity between the cavities, and at the same time, reducing the volume of the first mounting protrusion 210 can reduce manufacturing difficulty and save manufacturing costs. In some other embodiments, the height of the first reinforcing protrusion 220 may be flush with or higher than the height of the mounting protrusion 210, meaning that the volume of the first reinforcing cavity 211 may be equal to or less than the volume of the third reinforcing cavity 221.

[0038] In some embodiments, the first reinforcing cavity 211 has a trapezoidal cross-section on a reference plane perpendicular to the first main surface, with the side length of the cavity cross-section near the first main surface being greater than the side length of the cavity cross-section away from the first main surface. The mounting protrusion 210 is approximately prism-shaped with a relatively flat top surface, meaning that the top of the protrusion away from the first main surface of the floor panel 100 provides a stable support surface for the installation of the seat. The cross-section of the mounting protrusion 210 is trapezoidal, and its cross-section is the first reinforcing cavity 211 formed perpendicular to the first main surface of the floor panel 100. The side of the trapezoidal cavity near the first main surface of the floor panel 100 has a side length greater than the side length away from the first main surface, meaning the lower base of the trapezoid is longer than the upper base. When the smaller upper top of the mounting protrusion 210 transitions to its larger lower base, i.e., the lower base of the trapezoid is longer than the upper base, the stability of the trapezoid increases. The mounting protrusion 210, with its approximate quadrangular prism shape, forms a first reinforcing cavity 211 with the first main surface of the floor panel 100. This cavity smoothly transmits and disperses pressure loads, reducing stress concentration and thus enhancing the strength of the reinforcing bracket 200. The first reinforcing protrusion 220 is located between the two mounting protrusions 210. The third reinforcing cavity 221 formed by the first reinforcing protrusion 220 and the floor panel 100 has a similar shape to the first reinforcing cavity 211, and its cross-section on a reference plane perpendicular to the first main surface is also trapezoidal. Since the first reinforcing protrusion 220 is not used for mounting components, the volume of the third reinforcing cavity 221 is smaller than that of the first reinforcing cavity 211. In other embodiments, the structure and size of the mounting protrusion 210 are not limited, and the cross-section may include, but is not limited to, one or more combinations of rectangles, polygons, or approximate polygons.

[0039] In some embodiments, the reinforcing bracket 200 includes a second reinforcing protrusion 230, which forms a fourth reinforcing cavity 231 in conjunction with a first main surface. The fourth reinforcing cavity 231 and the first reinforcing cavity 211 are spaced apart. The height of the second reinforcing protrusion 230 protruding from the first main surface is higher than the height of each mounting protrusion 210 protruding from the first main surface. The fourth reinforcing cavity 231 formed by the second reinforcing protrusion 230 and the first main surface of the floor panel 100 is spaced apart from the first reinforcing cavity 211. The fourth reinforcing cavity 231 formed by the second reinforcing protrusion 230 and the first main surface of the floor panel 100, and the third reinforcing cavity 221 formed by the first reinforcing cavity 211 and the first main surface are also spaced apart. The height of the second reinforcing protrusion 230 protruding from the first main surface may be higher than the height of each mounting protrusion 210 protruding from the first main surface, i.e., the height of the fourth reinforcing cavity 231 formed by the second reinforcing protrusion 230 is higher than the height of the mounting protrusion 210, thereby creating a height difference. Since the fourth reinforcing cavity 231 does not have a reinforcing cavity on the second main surface of the floor panel 100, when the first reinforcing cavity 211 is under load, the fourth reinforcing cavity 231 will transmit pressure towards the first reinforcing cavity 211, thereby increasing the downward pressure on the first reinforcing cavity 211, enhancing the load-bearing capacity of the fourth reinforcing cavity 231, and improving the structural strength. In some other embodiments, the height of the second reinforcing protrusion 230 may be flush with or lower than the height of the mounting protrusion 210.

[0040] Combination Figure 6 , Figure 6 This is a structural schematic diagram of the reinforcing frame 300 of the vehicle floor assembly provided in this application.

[0041] The reinforcing frame 300 includes a transverse frame 310 and two longitudinal frames 320. The transverse frame 310 connects between the two longitudinal frames 320 and forms a second reinforcing cavity 311 with the second main surface. The reinforcing frame 300 is located below the second main surface of the floor panel 100 and includes one transverse frame 310 and two longitudinal frames 320, all of which can be integrally molded. The transverse frame 310 is located in the middle, connecting the two longitudinal frames 320, so that the reinforcing frame 300 forms an "I"-shaped structure. The transverse frame 310 and the second main surface of the floor panel 100 form the second reinforcing cavity 311, and the cross-section of the second reinforcing cavity 311 perpendicular to the floor panel 100 is rectangular. Furthermore, the second reinforcing cavity 311 partially overlaps with the first reinforcing cavity 211 and the third reinforcing cavity 221 in the direction perpendicular to the floor panel 100, and can be used to bear a large load on the reinforcing bracket 200, enhancing the support function. Meanwhile, the reinforcing frame 300 can increase the lateral stability of the reinforcing frame 300, prevent the overall structure from becoming unstable, and improve the overall stability of the entire vehicle floor assembly 10. In some other embodiments, the reinforcing frame 300 may include multiple longitudinally extending rod-shaped beams and multiple laterally extending rod-shaped beams. The frame structure is integrally formed or the different beams are fixedly connected by welding. The structural shape of the reinforcing frame 300 includes, but is not limited to, circular, rectangular, square, I-shaped, or any other irregular structure.

[0042] Furthermore, the floor panel simultaneously overlaps the transverse frame 310 and the two longitudinal frames 320. Specifically, the second main surface of the floor panel 100 overlaps the beam structure of the reinforcing frame 300, wherein the floor panel 100 may overlap all of the transverse frames 310 and the two longitudinal frames 320. Alternatively, the floor panel 100 may overlap all of the transverse frames 310 and a portion of the longitudinal frames 320. Or, the floor panel 100 may overlap a portion of the transverse frames 310 and a portion of the longitudinal frames 320. The simultaneous overlap of the floor panel 100 with the transverse frame 310 and the two longitudinal frames 320 can be understood as: the floor panel 100 overlaps all of the transverse frames 310 and a portion of the two longitudinal frames 320.

[0043] Furthermore, each longitudinal frame 320 is formed with a recessed groove extending in the direction of extension of the longitudinal frame 320, and the floor panel overlaps the edge of the recessed groove near the transverse frame 310. Specifically, the longitudinal frame 320 and transverse frame 310 of the reinforcing frame 300 have grooves respectively provided in the extension directions of the longitudinal frame 320 and transverse frame 310. The opening of the groove may face towards the floor panel 100, or it may face away from the floor panel 100. The floor panel 100 overlaps the edge of the recessed groove near the transverse frame 310, that is, the floor panel 100 overlaps all of the transverse frames 310, while the two sides of the floor panel 100 near the longitudinal frame 320 only overlap the edges of the longitudinal frame 320 near the transverse frame 310.

[0044] Furthermore, the groove openings face the side where the floor panel is located, and the grooves of each longitudinal frame 320 are connected to the second reinforcing cavity 311. Specifically, the groove openings face the side where the floor panel is located, meaning that the transverse frames 310 of the reinforcing frame 300, in a direction perpendicular to the floor panel 100, form a closed rectangular cross-section with the second main surface. The cross-sections of the two longitudinal frames 320 perpendicular to the floor panel 100 are U-shaped with openings facing the floor panel 100. The grooves of each longitudinal frame 320 are connected to the second reinforcing cavity 311, meaning that the grooves of the reinforcing frame 300 are interconnected, and the U-shaped cross-sections are located at both ends of the rectangular cross-section.

[0045] In summary, the mounting protrusion 210 forms a first reinforcing cavity 211 with the first main surface, and the reinforcing frame 300 forms a second reinforcing cavity 311 with the second main surface. The orthographic projection of the second reinforcing cavity 311 on the first main surface and the orthographic projection of the first reinforcing cavity 211 on the first main surface at least partially overlap. Thus, the overall structural strength of the vehicle floor assembly is effectively enhanced by the first reinforcing cavity 211 and the second reinforcing cavity 311 and their relative positional relationship.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A vehicle floor assembly (10) characterized by, The vehicle floor assembly (10) comprises: a floor panel (100) comprising a first major surface (110) and a second major surface (120) disposed opposite to each other; a reinforcing bracket (200) disposed on the first major surface (110); a reinforcing frame (300) disposed on the second major surface (120); wherein the reinforcing bracket (200) comprises a mounting protrusion (210) configured to mount a vehicle seat, the mounting protrusion (210) forms a first reinforcing cavity (211) with the first major surface (110), the reinforcing frame (300) forms a second reinforcing cavity (311) with the second major surface (120), and a projection of the second reinforcing cavity (311) on the first major surface (110) at least partially overlaps with a projection of the first reinforcing cavity (211) on the first major surface (110).

2. The vehicle floor assembly (10) of claim 1, characterized in that, The number of the mounting protrusions (210) is at least two, and the at least two mounting protrusions (210) are spaced apart in a direction in which the second reinforcing cavity (311) extends.

3. The vehicle floor assembly (10) of claim 2, characterized in that, The reinforcing bracket (200) comprises a first reinforcing protrusion (220) located between the two mounting protrusions (210) in the direction in which the second reinforcing cavity (311) extends, the first reinforcing protrusion (220) forms a third reinforcing cavity (221) with the first major surface (110), and a height of the first reinforcing protrusion (220) protruding from the first major surface (110) is lower than a height of each mounting protrusion (210) protruding from the first major surface (110).

4. The vehicle floor assembly (10) of claim 1, characterized by A cavity section of the first reinforcing cavity (211) on a reference plane perpendicular to the first major surface (110) is trapezoidal, and a length of a side of the cavity section close to the first major surface (110) is greater than a length of a side of the cavity section away from the first major surface (110).

5. The vehicle floor assembly (10) of claim 1, characterized by The reinforcing bracket (200) comprises a second reinforcing protrusion (230) forming a fourth reinforcing cavity (231) with the first major surface (110), the fourth reinforcing cavity (231) and the first reinforcing cavity (211) are spaced apart, and a height of the second reinforcing protrusion (230) protruding from the first major surface (110) is higher than the height of each mounting protrusion (210) protruding from the first major surface (110).

6. The vehicle floor assembly (10) according to any one of claims 1 to 5, characterized in that The reinforcing frame (300) comprises a transverse frame (310) and two longitudinal frames (320), the transverse frame (310) is connected between the two longitudinal frames (320), and the transverse frame (310) forms the second reinforcing cavity (311) with the second major surface (120).

7. The vehicle floor assembly (10) of claim 6, characterized by The floor panel (100) is simultaneously lapped on the transverse frame (310) and the two longitudinal frames (320).

8. The vehicle floor assembly (10) of claim 7, characterized by Each of the longitudinal frames (320) is formed with a recess groove (321) arranged in extension along a direction extending along the longitudinal frame (320), and the floor panel (100) is lapped at an edge of the recess groove (321) close to the transverse frame (310).

9. The vehicle floor assembly (10) of claim 8, characterized by The recess groove (321) has a groove opening facing a side where the floor panel (100) is located, and the recess groove (321) of each of the longitudinal frames (320) respectively communicates with the second reinforcing cavity (311).

10. A vehicle characterized by comprising: The vehicle comprises a vehicle floor assembly (10) according to any one of claims 1 to 9.

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