A rear floor assembly and vehicle

Abstract

The application discloses a rear floor assembly and a vehicle. The rear floor assembly comprises a general floor having a first surface and a second surface arranged oppositely, a floor framework connected with the first surface, the floor framework and the first surface cooperating to form two first energy absorption cavities arranged at intervals in a first direction, a first reinforcing member connected with the second surface and cooperating with the second surface to form a second energy absorption cavity between the two first energy absorption cavities in the first direction, and a second reinforcing member connected with the second surface and cooperating with the second surface to form a third energy absorption cavity, one of the two first energy absorption cavities being located between the second energy absorption cavity and the third energy absorption cavity in the first direction. Thus, a plurality of energy absorption cavities arranged at intervals in the first direction and alternately arranged on the first surface and the second surface on both sides of the general floor are formed, so that the structural strength of the rear floor assembly can be effectively improved, and the impact performance of the rear floor assembly can be improved.

Description

Technical Field

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

[0002] As occupants place increasingly higher demands on the collision safety of electric vehicles, the vehicle floor, as the foundation of the vehicle body structure, bears the weight of vehicle accessories and passenger cargo, while also withstanding the loads, vibrations, impacts, and torques generated during the movement of the car.

[0003] The rear floor assembly is part of the vehicle floor and is the first contact structure in a rear-end collision. Therefore, the structure of the rear floor assembly is particularly important and needs further improvement to enhance its impact performance. Utility Model Content

[0004] The main objective of this application is to provide a rear floor assembly and vehicle that addresses the aforementioned technical problems existing in the prior art.

[0005] To address the aforementioned problems, this application provides a rear floor assembly comprising a main floor, a floor frame, a first reinforcing member, and a second reinforcing member. The main floor has a first surface and a second surface disposed opposite to each other. The floor frame is connected to the first surface, and the floor frame and the first surface cooperate to form two first energy-absorbing cavities spaced apart in a first direction. The first reinforcing member is connected to the second surface and cooperates with the second surface to form a second energy-absorbing cavity located between the two first energy-absorbing cavities in the first direction. The second reinforcing member is connected to the second surface and cooperates with the second surface to form a third energy-absorbing cavity, and one of the two first energy-absorbing cavities is located between the second energy-absorbing cavity and the third energy-absorbing cavity in the first direction.

[0006] In some embodiments, the floor frame includes a protruding body and two rear recesses, the two rear recesses being spaced apart in a second direction and connected to one end of the protruding body in a first direction. Each rear recess includes a first bottom wall and a second bottom wall connected to each other. The end of the first bottom wall away from the second bottom wall is connected to the protruding body. The first bottom wall extends upward in a third direction, and the second bottom wall extends in the first direction away from the protruding body. A second reinforcing member corresponds to the first bottom wall and the second bottom wall in the second direction, wherein the first direction, the second direction, and the third direction intersect each other.

[0007] In some embodiments, the total floor includes a luggage compartment floor, which includes a first vertical plate and a first horizontal plate that are bent and connected. The first vertical plate extends upward in a third direction, and the first horizontal plate extends in a first direction. One end of the first vertical plate away from the first horizontal plate is connected to a protruding body, and the two ends of the second reinforcement member in the first direction are respectively connected to the first vertical plate and the first horizontal plate.

[0008] In some embodiments, the rear recess includes a rear end plate located on the side of the rear recess near the trunk floor. The rear end plate and a first vertical plate protrude from the second bottom wall at the end of the third direction away from the protruding body, and a first horizontal plate is connected to the end of the rear end plate at the end of the third direction away from the protruding body.

[0009] In some embodiments, the second reinforcing member includes a main body plate and a connecting plate. The two ends of the connecting plate are respectively connected to the main body plate and the first vertical plate. The end of the main body plate away from the connecting plate is connected to the first horizontal plate. The main body plate is opposite to and spaced apart from the first vertical plate in a first direction. The main body plate has a storage opening that penetrates the two opposing surfaces of the main body plate.

[0010] In some embodiments, the connecting plate is provided with a reinforcing groove corresponding to the storage opening.

[0011] In some embodiments, the total floor includes two cover plates located at both ends of the total floor in a second direction. The two cover plates and the floor frame form two fourth energy-absorbing cavities spaced apart in the second direction, and two first energy-absorbing cavities are located between the two fourth energy-absorbing cavities in the second direction.

[0012] In some embodiments, a reinforcing step is provided at the end of the cover plate away from the rear recess, and the reinforcing step is provided at the opposite end of the two cover plates in a second direction.

[0013] In some embodiments, the floor frame includes a front end plate, and the cover plate has a front end notch at the position corresponding to the reinforcing step and the floor frame. The front end plate covers the front end notch to connect the cover plate and the floor frame. The structural strength of the front end plate is less than the structural strength of the floor frame.

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

[0015] Compared with the prior art, the rear floor assembly provided in this application includes a main floor, a floor frame, a first reinforcing member, and a second reinforcing member. The main floor has a first surface and a second surface arranged opposite to each other. The floor frame is connected to the first surface, and the floor frame and the first surface cooperate to form two first energy-absorbing cavities spaced apart in a first direction. The first reinforcing member is connected to the second surface and cooperates with the second surface to form a second energy-absorbing cavity located between the two first energy-absorbing cavities in the first direction. The second reinforcing member is connected to the second surface and cooperates with the second surface to form a third energy-absorbing cavity. One of the two first energy-absorbing cavities is located between the second energy-absorbing cavity and the third energy-absorbing cavity in the first direction. Through the above embodiment, two spaced-apart first energy-absorbing cavities are formed on one side of the first surface of the main floor, a second energy-absorbing cavity located between the two first energy-absorbing cavities is formed on one side of the second surface of the main floor, and a third energy-absorbing cavity is also formed on one side of the second surface of the main floor, located on the side of one of the first energy-absorbing cavities away from the second energy-absorbing cavity. This forms a plurality of energy-absorbing cavities spaced apart in the first direction and alternately arranged on the first and second surfaces on both sides of the main floor, thereby effectively improving the structural strength of the rear floor assembly and enhancing the impact performance of the rear floor assembly. 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 a structure of an embodiment of the rear floor assembly provided in this application;

[0018] Figure 2 yes Figure 1 The diagram shows the disassembled structure of the rear floor assembly.

[0019] Figure 3 yes Figure 1 The rear floor assembly shown is a cross-sectional view along the AA direction;

[0020] Figure 4 yes Figure 2 A schematic diagram of one embodiment of the floor frame shown;

[0021] Figure 5 yes Figure 2 A schematic diagram of the structure of one embodiment of the total floor shown;

[0022] Figure 6 yes Figure 5 A schematic diagram of one embodiment of the luggage compartment floor is shown;

[0023] Figure 7 yes Figure 4 The diagram shows an enlarged disassembly structure of the floor frame at the dashed box I.

[0024] Figure 8 yes Figure 2 A schematic diagram of an embodiment of the third reinforcing member is shown;

[0025] Figure 9 yes Figure 1 The rear floor assembly shown is a cross-sectional view along the BB direction;

[0026] Figure 10 yes Figure 5 The enlarged structural schematic diagram of the total floor slab at the dashed box O is shown.

[0027] Figure 11 yes Figure 1 The diagram shows an enlarged structural schematic of the rear floor assembly at point P (dashed box).

[0028] Reference numerals: Rear floor assembly 10; Total floor 100; First surface 110; Second surface 120; Luggage compartment floor 130; First vertical plate 131; First horizontal plate 132; Cover plate 140; Fourth energy-absorbing cavity 150; Reinforcing step 160; Intermediate connecting floor 170; Cockpit floor 180; Floor frame 200; First energy-absorbing cavity 210; Protruding main body 220; Rear recess 230; First bottom wall 231; Rear end plate 232; Second bottom wall 233; Front recess 240; Front notch 241; First reinforcing member 300; Second energy-absorbing cavity 310; Second reinforcing member 400; Third energy-absorbing cavity 410; Main body plate 420; Storage opening 421; Connecting plate 430; Reinforcing groove 431; First direction X; Second direction Y; Third direction Z. Detailed Implementation

[0029] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0031] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly indicating the number, specific order, or primary and secondary relationship of the indicated technical features.

[0032] 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.

[0033] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0034] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0035] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0036] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0037] As occupants place increasingly higher demands on the crash safety of electric vehicles, the vehicle floor, as the foundation of the vehicle body structure, bears the weight of vehicle accessories, passengers, and cargo, while also withstanding the loads, vibrations, impacts, and torques generated during vehicle movement. The rear floor assembly, being part of the vehicle floor and the first point of contact in a rear-end collision, is particularly important, yet its structure still requires further improvement to enhance impact performance.

[0038] To address the related technical problems, this application provides a vehicle that includes a rear floor assembly. One end of the rear floor assembly is connected to two spaced-apart sill beams, and the end of the rear floor assembly away from the sill beams can be connected to a rear bumper beam. When the vehicle is impacted from the rear, the rear bumper beam can transmit the impact force to the rear floor assembly, which then transmits the impact force to the vehicle body through the sill beams. This effectively absorbs the impact force and reduces the risk of the impact force intruding into the interior space of the vehicle.

[0039] To address the related technical problems, this application also provides a rear floor assembly, for details please refer to [link / reference needed]. Figures 1 to 3 , Figure 1 This is a structural schematic diagram of an embodiment of the rear floor assembly provided in this application. Figure 2 yes Figure 1 The diagram shows the disassembled structure of the rear floor assembly. Figure 3 yes Figure 1 The rear floor assembly shown is a cross-sectional view along the AA direction.

[0040] The rear floor assembly 10 includes a main floor 100, a floor frame 200, a first reinforcing member 300, and a second reinforcing member 400. The main floor 100 has a first surface 110 and a second surface 120 disposed opposite to each other. The floor frame 200 is connected to the first surface 110, and the floor frame 200 and the first surface 110 cooperate to form two first energy-absorbing cavities 210 spaced apart in the first direction X. The first reinforcing member 300 is connected to the second surface 120 and cooperates with the second surface 120 to form a second energy-absorbing cavity 310 located between the two first energy-absorbing cavities 210 in the first direction X. The second reinforcing member 400 is connected to the second surface 120 and cooperates with the second surface 120 to form a third energy-absorbing cavity 410. One of the two first energy-absorbing cavities 210 is located between the second energy-absorbing cavity 310 and the third energy-absorbing cavity 410 in the first direction X.

[0041] The main floor 100 is the bottom plate of the vehicle's interior space, used to support various components installed inside the vehicle. The side of the main floor 100 closest to the vehicle's interior space is a first surface 110, and the side opposite to the first surface 110 is a second surface 120. The main floor 100 may have multiple spaced-apart ribs to improve its structural strength.

[0042] The floor frame 200 is connected to the first surface 110 of the main floor 100. The floor frame 200 provides a support framework for the main floor 100, enabling it to have sufficient support to bear the various components of the vehicle's interior space. The floor frame 200 and the first surface 110 form two first energy-absorbing cavities 210 spaced apart in a first direction X, which can be understood as the vehicle's longitudinal direction. As an example, the floor frame 200 can be a single die-cast part. The floor frame 200 itself forms two first structural grooves spaced apart in the first direction X, with the openings of the two first structural grooves facing the first surface 110 of the main floor 100. The main floor 100 covers the floor frame 200, thereby forming two first energy-absorbing cavities 210 spaced apart in the first direction X. By forming two spaced-apart first structural grooves on the floor frame 200, both the lightweight purpose of the floor frame 200 and its superior structural strength can be achieved. As another example, the main floor 100 itself can form two cavity structures spaced apart in the first direction X. The main floor 100 covers the floor frame 200, thereby forming two first energy-absorbing cavities 210 spaced apart in the first direction X. Both first energy-absorbing cavities 210 can extend in the second direction Y, such that the two first energy-absorbing cavities 210 extending in the second direction Y are spaced apart in the first direction X, so that the area of ​​the first energy-absorbing cavities 210 in the second direction Y is larger, resulting in better impact performance of the rear floor assembly 10. Here, the second direction Y can be understood as the left-right direction of the vehicle.

[0043] The first reinforcing member 300 is located between the two first energy-absorbing cavities 210 in the first direction X, and the first reinforcing member 300 also forms a second energy-absorbing cavity 310 with the second surface 120 of the total floor 100, such that the second energy-absorbing cavity 310 is located between the two first energy-absorbing cavities 210 in the first direction X. The first reinforcing member 300 may extend in the second direction Y and may be connected from one end of the total floor 100 to the other end, so that the second energy-absorbing cavity 310 also extends in the second direction Y. Exemplarily, the first reinforcing member 300 may serve as a seat crossbeam, which may include a crossbeam body plate and two crossbeam connecting plates. The crossbeam body plate is spaced apart from the total floor 100 in the third direction Z, which can be understood as the height direction of the vehicle. The two crossbeam connecting plates are respectively fixed to both ends of the crossbeam body plate in the first direction X, and the ends of the two crossbeam connecting plates away from the crossbeam body plate are connected to the second surface 120 of the total floor 100 to form the second energy-absorbing cavity 310. The crossbeam body plate may be provided with mounting holes for fixing the seat. In some embodiments, the number of first reinforcing members 300 may be two or more. For example, the number of first reinforcing members 300 may be two, and both first reinforcing members 300 may be disposed on the second surface 120 and spaced apart in the first direction X. The two first reinforcing members 300 may also be located between the two first energy-absorbing cavities 210 in the first direction X, thereby forming two second energy-absorbing cavities 310 located between the two first energy-absorbing cavities 210 in the first direction X. Of course, one of the two first reinforcing members 300 may be located on the second surface 120 and the other on the first surface 110.

[0044] The second reinforcement 400 and the second surface 120 of the main floor 100 form a third energy-absorbing cavity 410, and one of the two first energy-absorbing cavities 210 is located between the second energy-absorbing cavity 310 and the third energy-absorbing cavity 410 in the first direction X. As an example, the third energy-absorbing cavity 410 may be located on the side of the first energy-absorbing cavity 210 near the sill beam that is away from the second energy-absorbing cavity 310 in the first direction X, that is, the third energy-absorbing cavity 410 is closer to the center of the vehicle in the first direction X, so that the first energy-absorbing cavity 210 near the sill beam is located between the second energy-absorbing cavity 310 and the third energy-absorbing cavity 410 in the first direction X. As another example, the third energy-absorbing cavity 410 may be located on the side of the first energy-absorbing cavity 210 further away from the sill beam that is away from the second energy-absorbing cavity 310 in the first direction X, that is, the third energy-absorbing cavity 410 is closer to the rear of the vehicle in the first direction X. When subjected to a rear-end collision, the collision energy is absorbed in a graded collapse manner by the third energy-absorbing cavity 410, the second energy-absorbing cavity 310 and the two first energy-absorbing cavities 210 spaced apart in the first direction X and spaced apart on both sides of the total floor 100, thereby fully absorbing the collision energy.

[0045] Through the above-described embodiments, two spaced-apart first energy-absorbing cavities 210 are formed on one side of the first surface 110 of the main floor 100, a second energy-absorbing cavity 310 located between the two first energy-absorbing cavities 210 is formed on one side of the second surface 120 of the main floor 100, and a third energy-absorbing cavity 410 located on one side of the second surface 120 of the main floor 100, on the side away from the second energy-absorbing cavity 310 of one of the first energy-absorbing cavities. This forms a plurality of energy-absorbing cavities spaced apart in the first direction X and alternately arranged on the first surface 110 and the second surface 120 on both sides of the main floor 100, thereby effectively improving the structural strength of the rear floor assembly 10 and enhancing the impact performance of the rear floor assembly 10.

[0046] See Figure 4 , Figure 4 yes Figure 2 The diagram shows a structural schematic of one embodiment of the floor frame.

[0047] In some embodiments, the floor frame 200 includes a protruding body 220 and two rear recesses 230. The two rear recesses 230 are spaced apart in the second direction Y and connected to one end of the protruding body 220 in the first direction X. Each rear recess 230 includes a first bottom wall 231 and a second bottom wall 233 connected to each other. The end of the first bottom wall 231 away from the second bottom wall 233 is connected to the protruding body 220. The first bottom wall 231 extends in the third direction Z, and the second bottom wall 233 extends in the first direction X in a direction away from the protruding body 220. The second reinforcing member 400 corresponds to the first bottom wall 231 and the second bottom wall 233 in the second direction Y, wherein the first direction X, the second direction Y, and the third direction Z intersect each other.

[0048] The floor frame 200 includes a protruding main body 220 and two rear recesses 230. The two rear recesses 230 are spaced apart in the second direction Y and can be connected to the end of the protruding main body 220 away from the sill beam in the first direction X. The rear recesses 230 can form a supporting frame for the luggage storage space. The rear recesses 230 are provided with a first bottom wall 231 and a second bottom wall 233. One end of the first bottom wall 231 is connected to the protruding main body, and the first bottom wall 231 is oriented away from the protruding main body 220 in the third direction Z. The second bottom wall 233 is connected at one end to the end of the first bottom wall 231 away from the protruding body 220 in the first direction X. The second bottom wall 233 extends in the direction away from the protruding body 220 in the first direction X. The third direction Z may not be perpendicular to the first direction X, and the angle between the third direction Z and the first direction X may be an obtuse angle. That is, the angle formed between the first bottom wall 231 and the protruding body 220 is an obtuse angle, thereby reducing the local stress between the first bottom wall 231 and the protruding body 220. Of course, in some other embodiments, the third direction Z may also be perpendicular to the first direction X. Thus, the first bottom wall 231 and the second bottom wall 233 are interconnected. The first bottom wall 231 extends in the third direction Z, and the second bottom wall 233 extends in the first direction X, so that the rear recess 230 and the protruding body 220 have a height difference, and the second bottom wall 230 is lower than the protruding body 220, so that the rear recess 230 and the protruding body 220 form an uneven structure, thereby improving the structural strength of the floor frame 200 and increasing the volume of the luggage compartment storage space. In addition, the second reinforcing member 400 is disposed in the rear recess 230 and corresponds to the first bottom wall 231 and the second bottom wall 233, thereby forming a third energy-absorbing cavity 410 occupying part of the luggage compartment storage space. The third energy-absorbing cavity 410, the first energy-absorbing cavity 210 and the second energy-absorbing cavity 310 are arranged sequentially in the third direction Z, which can further improve the impact performance of the rear floor assembly 10. In this embodiment, the dimension between the ends of the two rear recesses 230 that are away from the protruding body 220 can be greater than the dimension of the protruding body 220 in the second direction Y, thereby further increasing the volume of the luggage storage space.

[0049] In some embodiments, the floor frame 200 further includes two front recesses 240, which are spaced apart in the second direction Y. One end of each front recess 240 is connected in the first direction X to the end of the protruding body 220 away from the rear recess 230. Each front recess 240 may include a third bottom wall and a fourth bottom wall. One end of the third bottom wall is connected to the protruding body 220 and extends in the third direction Z away from the protruding body 220. One end of the fourth bottom wall is connected to the third bottom wall, and the other end of the fourth bottom wall extends in the first direction X away from the protruding body 220. This is to ensure that portions of the two recesses 240 are spaced apart from the protruding body 220 in the third direction Z and are lower than the protruding body 220. The two front recesses 240 may also be lower than the two rear recesses 230 in the third direction Z, thereby lowering the vehicle's center of gravity and making the vehicle more stable. A first structural groove is provided between the portions of the two front recesses 240 that are lower than the portions of the protruding body 220, and the protruding body 220 is provided with another first structural groove. The two first structural grooves and the first surface 110 of the total floor 100 form two first energy-absorbing cavities 210, and the first energy-absorbing cavity 210 located between the two front recesses 240 is lower than the other first energy-absorbing cavity 210 in the third direction Z. A cabin space is also formed on the side of the total floor 100 away from the front recesses 240. Thus, the floor frame 200, the first reinforcing member 300 and the second reinforcing member 400 and the total floor 100 form a plurality of energy-absorbing cavities with varying heights in the third direction Z: third energy-absorbing cavity 410 - one of the first energy-absorbing cavities 210 - second energy-absorbing cavity 310 - another first energy-absorbing cavity 210, thereby further improving the structural strength of the rear floor assembly 10. In this embodiment, the dimension between the ends of the two front recesses 240 away from the protruding body 220 can be greater than the dimension of the protruding body 220 in the second direction Y, thereby further increasing the volume of the luggage storage space.

[0050] See Figure 5 and Figure 6 , Figure 5 yes Figure 2 The diagram shows a structural schematic of one embodiment of the total floor. Figure 6 yes Figure 5 A schematic diagram of one embodiment of the luggage compartment floor is shown.

[0051] In some embodiments, the total floor 100 includes a luggage floor 130, which includes a first vertical plate 131 and a first horizontal plate 132 that are bent and connected. The first vertical plate 131 extends in a third direction Z, and the first horizontal plate 132 extends in a first direction X. One end of the first vertical plate 131 away from the first horizontal plate 132 is connected to a protruding body 220, and the two ends of the second reinforcing member 400 in the first direction X are respectively connected to the first vertical plate 131 and the first horizontal plate 132.

[0052] The main floor 100 includes a luggage compartment floor 130, which includes a first vertical plate 131 and a first horizontal plate 132 that are bent and connected. The two ends of the first vertical plate 131 and the first horizontal plate in the second direction Y are connected to the corresponding rear recesses 230. One end of the first vertical plate 131 in the first direction X can be connected to the protruding body 220. The end of the first vertical plate 131 away from the protruding body 220 can be extended in the third direction Z in a direction away from the first reinforcing member 300. One end of the first horizontal plate 132 is connected to the end of the first vertical plate 131 away from the protruding body 220. The end of the first horizontal plate 132 away from the first vertical plate 131 can be extended in the first direction X in a direction away from the protruding body 220. The connection between the first horizontal plate 132 and the first vertical plate 131 can be bent to reduce local stress and improve the structural strength of the connection between the first horizontal plate 132 and the first vertical plate 131. The second reinforcing member 400 is connected to the first vertical plate 131 and the first horizontal plate 132 at both ends in the first direction X, thereby further improving the structural strength of the luggage compartment floor 130 and reducing the risk of deformation and damage to the luggage compartment floor 130.

[0053] Furthermore, the size of the second reinforcing member 400 in the third direction Z can be equal to or greater than the size of the trunk floor 130 in the third direction Z, so that the size of the third energy-absorbing cavity 410 in the third direction Z is equal to or greater than the size of the trunk floor 130, thereby giving the third energy-absorbing cavity 410 a larger coverage area over the rear end of the rear floor assembly 10 in the third direction Z, which can improve the impact performance of the rear floor assembly 10.

[0054] Of course, in some other embodiments, the second reinforcing member 400 may be connected only to the first vertical plate 131 to form the third energy absorption cavity 410; or the second reinforcing member 400 may be connected only to the first horizontal plate 132 to form the third energy absorption cavity 410.

[0055] In some embodiments, the main floor 100 further includes an intermediate connecting floor 170 and a cabin floor 180. The intermediate connecting floor 170 is connected to the luggage compartment floor 130 and the cabin floor 180 at its two ends in the first direction X, respectively. The intermediate connecting floor 170 is correspondingly connected to the protruding body 220, and the cabin floor 180 is correspondingly connected to the two front recesses 240. Specifically, the cabin floor 180 includes a curvedly connected second vertical plate and a second horizontal plate. One end of the second vertical plate is connected to the protruding body 220 and extends in the third direction Z. One end of the second horizontal plate is connected to the end of the second vertical plate away from the protruding body 220 and extends in the first direction X away from the protruding body 220, thereby forming a cabin space on the side of the second horizontal plate and the second vertical plate away from the floor frame 200. The curved connection between the second horizontal plate and the second vertical plate can reduce local stress and improve the structural strength of the connection between the second horizontal plate and the second vertical plate. In some embodiments, the number of second reinforcement members 400 may be two, with one second reinforcement member 400 disposed on the trunk floor 130 and the other second reinforcement member 400 disposed on the cabin floor 180, thereby further improving the impact performance of the rear floor assembly 10.

[0056] See Figure 7 , Figure 7 yes Figure 4 The diagram shows an enlarged disassembly structure of the floor frame at the dashed box I.

[0057] In some embodiments, the rear recess 230 includes a rear end plate 232 located on the side of the rear recess 230 near the trunk floor 130. The rear end plate 232 and the first vertical plate 131 protrude from the second bottom wall 233 at the end of the third direction Z away from the protruding body 220. The first horizontal plate 132 is connected to the end of the rear end plate 232 away from the protruding body 220 in the third direction Z.

[0058] A rear end plate 232 is provided on the side of the rear recess 230 near the trunk floor 130. One end of the trunk floor 130 is connected to one side of the rear end plate 232. Specifically, the end of the rear end plate 232 away from the protruding body 220 in the third direction Z protrudes from the second bottom wall 233, and the first vertical plate 131 also protrudes from the second bottom wall 233. The first horizontal plate 132 is connected to the end of the rear end plate 232 away from the protruding body 220. This increases the size of the trunk storage space in the third direction Z, thereby increasing the volume of the trunk storage space.

[0059] The rear recess 230 can be composed of a bottom wall (the bottom wall being the entirety of the first bottom wall 231 and the second bottom wall 233) and side walls connected to both ends of the bottom wall in the second direction Y. To increase the size of the luggage storage space in the third direction Z, a rear end plate 232 connected to the luggage floor 130 needs to be provided on one side of the side wall near the luggage floor 130, and the rear end plate 232 needs to protrude from the bottom wall. However, this arrangement is somewhat redundant at the rear end plate 232. Therefore, a rear notch can be provided at the position corresponding to the rear recess 230 and the rear end plate 232, that is, the side wall near the luggage floor 130 can be canceled or partially canceled to form a rear notch, so that the rear end plate 232 covers the rear notch and connects with the first bottom wall 231 and the second bottom wall 233, thereby reducing the weight of the rear recess 230 and achieving the purpose of lightweighting.

[0060] In this embodiment, the rear end plate 232 may have a third flange at one end in the third direction Z away from the protruding body 220 and at the other end in the first direction X near the protruding body 220. The first vertical plate 131 and the first horizontal plate 132 overlap the third flange, thereby making the connection between the rear end plate 232 and the trunk floor 130 more secure. In addition, the second reinforcing member 400 may also have a connecting contact angle at each end in the second direction Y. One end of the connecting contact angle is connected to the second reinforcing member 400, and the other end of the connecting contact angle is disposed opposite to and connected to the side of the rear end plate 232, thereby making the connection between the second reinforcing member, the trunk floor and the rear recess more stable, and can also be cushioned by the connecting contact angle when impacted.

[0061] See Figure 8 , Figure 8 yes Figure 2 A schematic diagram of one embodiment of the third reinforcing member is shown.

[0062] In some embodiments, the second reinforcing member 400 includes a main body plate 420 and a connecting plate 430. The two ends of the connecting plate 430 are respectively connected to the main body plate 420 and the first vertical plate 131. The end of the main body plate 420 away from the connecting plate 430 is connected to the first horizontal plate 132. The main body plate 420 is opposite to and spaced apart from the first vertical plate 131 in the first direction X. The main body plate 420 is provided with a storage opening 421 that penetrates the two opposing surfaces of the main body plate 420.

[0063] The second reinforcing member 400 includes a main body plate 420 and a connecting plate 430. The main body plate 420 is positioned opposite and spaced apart from the first vertical plate 131 in the second direction Y, away from the protruding main body 220. The connecting plate 430 is positioned opposite and spaced apart from the first horizontal plate 132 in the third direction Z, closer to the first reinforcing member 300. One end of the main body plate 420 in the third direction Z is connected to the first horizontal plate 132, and the other end of the main body plate 420 in the third direction Z is connected to the connecting plate 430. The end of the connecting plate 430 away from the main body plate 420 is connected to the first vertical plate 131. Further, the first vertical plate 131 is provided with a first flange in the first direction X, through which the first vertical plate 131 can be connected to the protruding main body 220. The end of the connecting plate 430 near the first vertical plate 131 is provided with a second flange in the first direction X, which can overlap the side of the first flange away from the protruding main body 220, thereby improving the connection stability between the second reinforcing member 400 and the luggage compartment floor 130. In addition, the main body panel 420 is provided with a storage opening 421 that penetrates the two opposite surfaces of the main body panel 420 in the first direction X. The storage opening 421 connects the third energy-absorbing cavity 410 between the second reinforcing member 400 and the first vertical plate 131 with the trunk storage space. Thus, while improving the impact performance of the rear floor assembly 10 through the second reinforcing member 400, the third energy-absorbing cavity 410 can also be used as a hidden storage space to improve the utilization rate of the vehicle interior space. The number of storage openings 421 can be two or more, and the specific number of storage openings 421 can be set according to the actual situation.

[0064] In some embodiments, the connecting plate 430 is provided with a reinforcing groove 431 corresponding to the storage opening 421.

[0065] The connecting plate 430 includes a reinforcing groove 431, which can be correspondingly arranged with the storage opening 421 in the first direction X. The reinforcing groove 431 can be recessed in the third direction Z towards the main plate 420, or it can be protruding in the third direction Z away from the main plate 420, thereby improving the structural strength of the second reinforcing member 400. In this embodiment, the reinforcing groove 431 may include a groove body and a plurality of reinforcing parts. The groove body is recessed in the connecting plate 430, and the plurality of reinforcing parts are spaced apart along the periphery of the groove body. The plurality of reinforcing grooves 431 are in the same direction as the recess of the groove body, thereby further improving the structural strength of the second reinforcing member 400. The number of reinforcing grooves 431 can also be multiple, and the number of reinforcing grooves 431 can be the same as or more than the number of storage openings 421. As an example, the number of reinforcing grooves 431 is the same as the number of storage openings 421, with one reinforcing groove 431 corresponding to one storage opening 421. As another example, the number of reinforcing grooves 431 is greater than the number of storage openings 421, and one storage opening 421 can correspond to multiple reinforcing grooves 431 in the first direction X.

[0066] See Figure 9 , Figure 9 yes Figure 1 The rear floor assembly shown is a cross-sectional view along the BB direction.

[0067] In some embodiments, the total floor 100 includes two cover plates 140 located at both ends of the total floor 100 in the second direction Y. The two cover plates 140 and the floor frame 200 form two fourth energy-absorbing cavities 150 spaced apart in the second direction Y. Two first energy-absorbing cavities 210 are located between the two fourth energy-absorbing cavities 150 in the second direction Y.

[0068] The main floor 100 includes two cover plates 140 located at both ends of the main floor 100 in the second direction Y, forming two fourth energy-absorbing cavities 150 spaced apart in the second direction Y with the floor frame 200. Exemplarily, the floor frame 200 has two second structural grooves spaced apart in the second direction Y, and two first structural grooves connected between the two second structural grooves in the second direction Y. Each of the two second structural grooves forms a fourth energy-absorbing cavity 150 with a cover plate 140, thus forming two fourth energy-absorbing cavities 150 spaced apart in the second direction Y. Two first energy-absorbing cavities 210 are located between the two fourth energy-absorbing cavities 150 in the second direction Y, thereby improving the structural strength and impact performance of the floor frame 200. Furthermore, the two first structural grooves and the two second structural grooves can communicate with each other, forming a U-shaped total cavity with the second surface 120. Upon impact, the impact force can circulate within the total cavity, effectively absorbing collision energy and further improving the impact performance of the rear floor assembly 10. The portion between the two first energy-absorbing chambers 210 and between the two fourth energy-absorbing chambers 150 of the floor frame 200 may be provided with a weight-reducing port. The weight-reducing port penetrates the floor frame 200 in the third direction Z, thereby enabling the floor frame 200 to have better structural strength while reducing the weight of the floor frame 200 to a large extent.

[0069] See Figure 10 , Figure 10 yes Figure 5 The diagram shows an enlarged structural schematic of the total floor at the dashed box O.

[0070] In some embodiments, a reinforcing step 160 is provided at one end of the cover plate 140 away from the rear recess 230, and the reinforcing step 160 is disposed at one end opposite to the two cover plates 140 in the second direction Y.

[0071] Each of the two cover plates 140 has a reinforcing step 160 at its end away from the rear recess 230, and the two reinforcing steps 160 are disposed at opposite ends of the two cover plates 140 in the second direction Y. Exemplarily, the reinforcing step 160 includes a first step surface, a second step surface, and a supporting surface. The first step surface is located at the end of the cover plate 140 in the third direction Z away from the floor frame 200. The supporting surface is connected to the end of the first step surface near the other cover plate 140 in the second direction Y, and is vertically disposed in the third direction Z. The second step surface is formed by at least a portion of the first step surface sinking towards the floor frame 200 in the third direction Z, and the second step surface is still spaced from the floor frame 200 in the third direction Z. Thus, the reinforcing step 160 can both improve the structural strength of the cover plate 140 and increase the volume of the cabin space. The number of reinforcing steps 160 can be multiple. Multiple reinforcing steps 160 can be sequentially arranged in the first direction X, away from the protruding body 220; alternatively, multiple reinforcing steps 160 can be sequentially arranged in the second direction Y, away from the other cover plate 140; or, some reinforcing steps 160 can be sequentially arranged in the first direction X, away from the protruding body 220, and some reinforcing steps 160 can be sequentially arranged in the second direction Y, away from the other cover plate 140. The arrangement of multiple reinforcing steps 160 can be determined according to actual needs. Therefore, providing multiple reinforcing steps 160 on the cover plate 140 can further improve the structural strength of the cover plate 140 and increase the volume of the cabin space.

[0072] See Figure 11 , Figure 11 yes Figure 1 The diagram shows an enlarged structural schematic of the rear floor assembly at point P (dashed box).

[0073] In some embodiments, the floor frame 200 includes a front end plate (not shown). The cover plate 140 has a front end notch 241 at the position where the reinforcing step 160 corresponds to the floor frame 200. The front end plate covers the front end notch 241 to connect the cover plate 140 and the floor frame 200. The structural strength of the front end plate is less than the structural strength of the floor frame 200.

[0074] The floor frame 200 has a front notch 241 on its outer side wall away from the front end plate in the second direction Y. This front notch 241 is located at a position corresponding to the reinforcing step 160. That is to say, the portion of the outer side wall of the floor frame 200 corresponding to the reinforcing step 160 has a gap between it and the cover plate 140 in the third direction Z. The remaining portion of the floor frame 200, excluding the outer side wall, is connected to the cover plate 140. A front end plate is provided at the front notch 241 to connect part of the floor frame 200 and the cover plate 140. Because of the setting of the reinforcing step 160, the rear floor assembly 10 has sufficient structural strength at the reinforcing step 160. Therefore, a front notch 241 is provided at the position of the floor frame 200 corresponding to the reinforcing step 160, and the floor frame 200 and the cover plate 140 corresponding to the front notch 241 are connected by a front end plate with lower structural strength. The fact that the structural strength of the front end plate is less than that of the floor frame 200 can be understood as the thickness or mass of the front end plate being less than the thickness or mass of the rest of the floor frame 200. Therefore, the rear floor assembly 10 can have better structural strength while reducing its weight, achieving the goal of lightweighting. Of course, in other embodiments, the structural strength of the front end plate can also be greater than that of the floor frame 200, thereby further improving the structural strength of the corresponding parts of the floor frame 200 and the reinforcing step 160 without having to increase the thickness or mass of the entire board of the floor frame 200 to achieve the improvement of the structural strength of the corresponding parts.

[0075] In summary, two spaced-apart first energy-absorbing cavities 210 are formed on one side of the first surface 110 of the main floor 100, a second energy-absorbing cavity 310 is formed on one side of the second surface 120 of the main floor 100 located between the two first energy-absorbing cavities 210, and a third energy-absorbing cavity 410 is also formed on one side of the second surface 120 of the main floor 100, located on the side of one of the first energy-absorbing cavities 210 away from the second energy-absorbing cavity 310. This forms a plurality of energy-absorbing cavities spaced apart in the first direction X and alternately arranged on the first surface 110 and the second surface 120 on both sides of the main floor 100, thereby effectively improving the structural strength of the rear floor assembly 10 and enhancing the impact performance of the rear floor assembly 10.

[0076] 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 rear floor assembly, characterized in that, The rear floor assembly includes: The floor has a first surface and a second surface arranged opposite to each other; A floor frame is connected to the first surface, and the floor frame and the first surface cooperate to form two first energy-absorbing cavities spaced apart in a first direction; The first reinforcing member is connected to the second surface and cooperates with the second surface to form a second energy-absorbing cavity located between the two first energy-absorbing cavities in the first direction; The second reinforcing member is connected to the second surface and cooperates with the second surface to form a third energy-absorbing cavity, wherein one of the two first energy-absorbing cavities is located between the second energy-absorbing cavity and the third energy-absorbing cavity in the first direction.

2. The rear floor assembly according to claim 1, characterized in that, The floor frame includes a protruding main body and two rear recesses. The two rear recesses are spaced apart in a second direction and connected to one end of the protruding main body in the first direction. Each rear recess includes a first bottom wall and a second bottom wall connected to each other. The end of the first bottom wall away from the second bottom wall is connected to the protruding main body. The first bottom wall extends in a third direction, and the second bottom wall extends in the first direction away from the protruding main body. The second reinforcing member corresponds to the first bottom wall and the second bottom wall in the second direction, wherein the first direction, the second direction, and the third direction intersect each other.

3. The rear floor assembly according to claim 2, characterized in that, The main floor includes a luggage compartment floor, which includes a first vertical plate and a first horizontal plate that are bent and connected. The first vertical plate extends upward in the third direction, and the first horizontal plate extends in the first direction. The end of the first vertical plate away from the first horizontal plate is connected to the protruding body. The two ends of the second reinforcing member in the first direction are respectively connected to the first vertical plate and the first horizontal plate.

4. The rear floor assembly according to claim 3, characterized in that, The rear recess includes a rear end plate located on the side of the rear recess near the trunk floor. The rear end plate and the first vertical plate protrude from the second bottom wall at the end of the third direction away from the protruding body. The first horizontal plate is connected to the end of the rear end plate at the end of the third direction away from the protruding body.

5. The rear floor assembly according to claim 3, characterized in that, The second reinforcing member includes a main plate and a connecting plate. The two ends of the connecting plate are respectively connected to the main plate and the first vertical plate. The end of the main plate away from the connecting plate is connected to the first horizontal plate. The main plate is opposite to and spaced apart from the first vertical plate in the first direction. The main plate is provided with a storage opening penetrating the two opposite surfaces of the main plate.

6. The rear floor assembly according to claim 5, characterized in that, The connecting plate is provided with a reinforcing groove corresponding to the storage opening.

7. The rear floor assembly according to claim 2, characterized in that, The total floor includes two cover plates, which are located at both ends of the total floor in the second direction. The two cover plates and the floor frame form two fourth energy-absorbing cavities spaced apart in the second direction, and the two first energy-absorbing cavities are located between the two fourth energy-absorbing cavities in the second direction.

8. The rear floor assembly according to claim 7, characterized in that, The end of the cover plate away from the rear recess is provided with a reinforcing step, and the reinforcing step is provided at the opposite end of the two cover plates in the second direction.

9. The rear floor assembly according to claim 8, characterized in that, The floor frame includes a front end plate. The cover plate has a front end notch at the position corresponding to the reinforcing step and the floor frame. The front end plate covers the front end notch to connect the cover plate and the floor frame. The structural strength of the front end plate is less than the structural strength of the floor frame.

10. A vehicle, characterized in that, The vehicle includes the rear floor assembly as described in any one of claims 1 to 9.

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