Rear floor framework of vehicle and vehicle

Abstract

The rear floor framework of the vehicle comprises a first longitudinal beam and a second longitudinal beam, the first longitudinal beam and the second longitudinal beam are oppositely arranged in a spaced mode in the first direction, the first longitudinal beam is provided with a plurality of first protruding sections, the second longitudinal beam is provided with a plurality of second protruding sections, and the first protruding sections correspond to the second protruding sections in a one-to-one mode. The length of the first protruding section protruding out of the first longitudinal beam is equal to the length of the corresponding second protruding section protruding out of the second longitudinal beam. And the plurality of connecting cross beams are respectively connected between the first convex sections and the corresponding second convex sections. The first protruding sections and the second protruding sections are arranged, and the first protruding sections and the second protruding sections are connected with the first longitudinal beam and the second longitudinal beam through the integrated thermal forming process correspondingly, so that the first longitudinal beam and the second longitudinal beam have high strength and rigidity; the risk of stress concentration at the connecting positions of the first longitudinal beam, the second longitudinal beam and the connecting cross beam is reduced, the supporting strength of the rear floor framework of the vehicle is improved, and then the overall stability and safety of the vehicle are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a rear floor frame of a vehicle and a vehicle having the same. Background Art

[0002] The rear floor frame is a vehicle component whose function is to bear the vehicle load and support the body frame, while taking into account the body stiffness, strength and safety performance. It is the basis of vehicle suspension, driving stability and comfort.

[0003] In the related art, stress concentration is prone to occur at the connection between the rear floor longitudinal beam and the connecting cross beam of the rear floor frame, the load is large, the strength and rigidity of the rear floor longitudinal beam are not high, the risk of cracking is prone to occur, and the vehicle stability is poor. In addition, the existing rear floor frame structure is complex, the assembly efficiency is low, and the cost is high. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a rear floor frame of a vehicle, reduce the risk of stress concentration at the connection between the first longitudinal beam, the second longitudinal beam and the connecting cross beam, and improve the supporting strength of the rear floor frame of the vehicle.

[0005] The utility model further provides a vehicle.

[0006] According to the embodiment of the utility model, the rear floor frame of the vehicle includes: a first longitudinal beam and a second longitudinal beam, the first longitudinal beam and the second longitudinal beam are arranged opposite to each other and spaced apart along a first direction, the side of the first longitudinal beam facing the second longitudinal beam has a plurality of first protruding sections protruding toward the second longitudinal beam, the plurality of first protruding sections are arranged in sequence along the second direction, the side of the second longitudinal beam facing the first longitudinal beam has a plurality of second protruding sections protruding toward the first longitudinal beam, the plurality of second protruding sections are arranged in sequence along the second direction, the plurality of first protruding sections and the plurality of second protruding sections correspond one to one, the length of the first protruding section protruding from the first longitudinal beam is equal to the length of the corresponding second protruding section protruding from the second longitudinal beam, and the first direction and the second direction are perpendicular; a plurality of connecting cross beams, the plurality of connecting cross beams are respectively connected between the corresponding first protruding sections and the corresponding second protruding sections.

[0007] According to the rear floor frame of the vehicle in the embodiment of the utility model, a plurality of first protruding sections and second protruding sections are arranged, and the first protruding sections and the second protruding sections are respectively connected to the first longitudinal beam and the second longitudinal beam through an integrated hot forming process, so that the first longitudinal beam and the second longitudinal beam have higher strength and rigidity, and the vehicle load can be dispersed to the entire rear floor frame, thereby reducing the risk of stress concentration at the connection between the first longitudinal beam, the second longitudinal beam and the connecting cross beam, thereby reducing the risk of cracking at the connection between the first longitudinal beam, the second longitudinal beam and the connecting cross beam, improving the supporting strength of the rear floor frame of the vehicle, and further improving the overall stability and safety of the vehicle. In addition, the rear floor frame of the present application has a simple structure and is easy to assemble, which is beneficial to improving assembly efficiency and also beneficial to reducing the production cost of the rear floor frame.

[0008] In some embodiments of the present invention, along the second direction, the length dimension of the connecting beam and the corresponding first protruding section connecting area is L1, and the length dimension of the connecting beam and the corresponding second protruding section connecting area is L2, satisfying the relationship: L1=L2.

[0009] In some embodiments of the present invention, the first protruding section and the corresponding second protruding section have the same structure.

[0010] In some embodiments of the present invention, at least one connecting beam is formed with a reinforcement structure.

[0011] In some embodiments of the present invention, a top wall of the first longitudinal beam and / or a top wall of the second longitudinal beam is formed with a collapsed structure, and the collapsed structure extends along the spacing direction between the first longitudinal beam and the second longitudinal beam.

[0012] In some embodiments of the present invention, a collapse structure is formed between at least two adjacent connecting beams along the second direction.

[0013] In some embodiments of the present invention, the top wall of the first longitudinal beam and / or the top wall of the second longitudinal beam is recessed toward the bottom of the rear floor frame to form a groove structure, and the groove structure is configured as a collapsed structure.

[0014] In some embodiments of the present invention, the first longitudinal beam includes a first sub-longitudinal beam and a second sub-longitudinal beam connected to each other, and the second longitudinal beam includes a third sub-longitudinal beam and a fourth sub-longitudinal beam connected to each other. Along the first direction, the first sub-longitudinal beam and the second sub-longitudinal beam are respectively opposite to the third sub-longitudinal beam and the fourth sub-longitudinal beam; along the second direction, the length of the first sub-longitudinal beam is equal to the length of the third sub-longitudinal beam, and the length of the second sub-longitudinal beam is equal to the length of the fourth sub-longitudinal beam.

[0015] In some embodiments of the present invention, along the first direction, the length dimension of the connection area between the first sub-longitudinal beam and the second sub-longitudinal beam is L3, and the length dimension of the connection area between the third sub-longitudinal beam and the fourth sub-longitudinal beam is L4, satisfying the relationship: L3=L4.

[0016] A vehicle according to an embodiment of the utility model comprises the rear floor frame of the vehicle of the above embodiment.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 is a schematic diagram of the rear floor frame structure according to an embodiment of the utility model;

[0020] Figure 2 This is a schematic structural diagram of the rear floor frame from another angle according to an embodiment of the utility model;

[0021] Figure 3 is an exploded view of a rear floor frame according to an embodiment of the utility model;

[0022] Reference numerals:

[0023] Rear floor frame 100;

[0024] First longitudinal beam 1;

[0025] A first protruding section 11; a first sub-longitudinal beam 12; a second sub-longitudinal beam 13;

[0026] Second longitudinal beam 2;

[0027] The second protruding section 21; the third sub-longitudinal beam 22; the fourth sub-longitudinal beam 23;

[0028] Connecting beam 3; reinforcing structure 31;

[0029] Collapse structure 4. DETAILED DESCRIPTION

[0030] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0031] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0032] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0033] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or can communicate with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] Reference below Figure 1-Figure 3 A rear floor frame 100 according to an embodiment of the present invention is described.

[0035] like Figure 1-Figure 3 As shown, a rear floor frame 100 of a vehicle according to an embodiment of the utility model comprises: a first longitudinal beam 1 and a second longitudinal beam 2, the first longitudinal beam 1 and the second longitudinal beam 2 are arranged opposite to each other and spaced apart along a first direction, a side of the first longitudinal beam 1 facing the second longitudinal beam 2 has a plurality of first protruding sections 11 protruding toward the second longitudinal beam 2, the plurality of first protruding sections 11 are arranged sequentially along the second direction, a side of the second longitudinal beam 2 facing the first longitudinal beam 1 has a plurality of second protruding sections 21 protruding toward the first longitudinal beam 1, the plurality of second protruding sections 21 are arranged sequentially along the second direction, the plurality of first protruding sections 11 and the plurality of second protruding sections 21 correspond one to one, the length of the first protruding section 11 protruding from the first longitudinal beam 1 is equal to the length of the corresponding second protruding section 21 protruding from the second longitudinal beam 2, and the first direction and the second direction are perpendicular; a plurality of connecting cross beams 3, the plurality of connecting cross beams 3 are respectively connected between the corresponding first protruding sections 11 and the corresponding second protruding sections 21.

[0036] The rear floor frame 100 includes a first longitudinal beam 1 and a second longitudinal beam 2. The first longitudinal beam 1 and the second longitudinal beam 2 are arranged opposite to each other and spaced apart along a first direction. Figure 1 The first longitudinal beam 1 and the second longitudinal beam 2 can be extended along the second direction of the vehicle. Figure 1 The Y direction in the figure is the length direction of the vehicle. The first direction is perpendicular to the second direction, that is, the X direction is perpendicular to the Y direction.

[0037] The first longitudinal beam 1 may have a plurality of first protruding sections 11 on the side facing the second longitudinal beam 2, for example, the first protruding sections 11 may have 2, 3 or more, and the present application takes the case where two first protruding sections 11 are provided as an example for explanation, the first protruding sections 11 may extend toward the second longitudinal beam 2, and the plurality of first protruding sections 11 are arranged in sequence along the second direction. The second longitudinal beam 2 may have a plurality of second protruding sections 21 on the side facing the first longitudinal beam 1, for example, the second protruding sections 21 may have 2, 3 or more, and the present application takes the case where two second protruding sections 21 are provided as an example for explanation, the second protruding sections 21 may extend toward the first longitudinal beam 1, and the plurality of second protruding sections 21 are arranged in sequence along the second direction. The plurality of first protruding sections 11 and the plurality of second protruding sections 21 correspond one to one, and it can be understood that one first protruding section 11 and one second protruding section 21 are arranged in correspondence along the first direction.

[0038] The length of the first protruding section 11 protruding from the first longitudinal beam 1 is equal to the length of the corresponding second protruding section 21 protruding from the second longitudinal beam 2, which is beneficial to ensuring the structural strength of the rear floor frame 100 and also beneficial to making the rear floor frame 100 structurally symmetrical along the first direction. In addition, it can balance the structural strength of the connection between the first longitudinal beam 1, the second longitudinal beam 2 and the connecting cross beam 3, make the rear floor frame 100 evenly stressed, avoid obvious stress-intolerant points (i.e., positions that are prone to breakage), reduce the risk of cracking caused by unbalanced stress at the connection between the first longitudinal beam 1, the second longitudinal beam 2 and the connecting cross beam 3 on both sides, and thereby improve the overall stability and safety of the vehicle.

[0039] A plurality of connecting crossbeams 3 are respectively connected between the corresponding first protruding sections 11 and the corresponding second protruding sections 21, and the connecting crossbeams 3 are connected to the corresponding first protruding sections 11 and the corresponding second protruding sections 21. Specifically, one end of the connecting crossbeam 3 can be connected to the first protruding section 11 of the first longitudinal beam 1, and the other end of the connecting crossbeam 3 can be connected to the second protruding section 21 of the second longitudinal beam 2. By constructing the first longitudinal beam 1 and the second longitudinal beam 2 to have the first protruding section 11 and the second protruding section 21, respectively, and connecting the connecting crossbeam 3 to the corresponding first protruding section 11 and the corresponding second protruding section 21, the structural strength of the rear floor frame 100 can be improved, and the durability of the rear floor frame 100 can also be improved, so that the rear floor frame 100 can meet the structural strength requirements of the vehicle body, and the rear floor frame 100 of this structural form has low noise, low vibration frequency, and small vibration amplitude when in use, which is conducive to improving the NVH performance of the vehicle.

[0040] Thus, by providing a plurality of first protruding sections 11 and second protruding sections 21, and the first protruding sections 11 and second protruding sections 21 are respectively connected to the first longitudinal beam 1 and the second longitudinal beam 2 through an integrated hot forming process, the first longitudinal beam 1 and the second longitudinal beam 2 have high strength and rigidity, and the vehicle load can be dispersed to the entire rear floor frame 100, reducing the risk of stress concentration at the connection between the first longitudinal beam 1, the second longitudinal beam 2 and the connecting cross beam 3, thereby reducing the risk of cracking at the connection between the first longitudinal beam 1, the second longitudinal beam 2 and the connecting cross beam 3, improving the supporting strength of the rear floor frame 100 of the vehicle, and thus improving the overall stability and safety of the vehicle. In addition, the rear floor frame 100 of the present application has a simple structure and is easy to assemble, which is conducive to improving assembly efficiency and reducing the production cost of the rear floor frame 100.

[0041] In some embodiments of the present invention, Figure 1 and Figure 3 As shown, along the second direction, the length dimension of the connection area between the connecting beam 3 and the corresponding first protruding section 11 is L1, and the length dimension of the connection area between the connecting beam 3 and the corresponding second protruding section 21 is L2, satisfying the relationship: L1=L2.

[0042] Among them, along the second direction, the length dimension of the connection area between the connecting beam 3 and the corresponding first protruding section 11 can be L1, the length dimension of the connection area between the connecting beam 3 and the corresponding second protruding section 21 can be L2, and the length dimension of the connection area between the connecting beam 3 and the corresponding first protruding section 11 and the length dimension of the connection area between the connecting beam 3 and the corresponding second protruding section 21 can satisfy the relationship: L1 = L2. Such a setting is conducive to ensuring the structural strength of the rear floor frame 100, and can balance the structural strength of the connection between the first longitudinal beam 1, the second longitudinal beam 2 and the connecting beam 3, so that the rear floor frame 100 is evenly stressed, avoiding obvious intolerant points (i.e., positions that are prone to breakage), reducing the risk of cracking caused by uneven stress at the connection between the first longitudinal beam 1, the second longitudinal beam 2 and the connecting beam 3 on both sides, thereby improving the overall stability and safety of the vehicle.

[0043] In some embodiments of the present invention, Figure 1 and Figure 3 As shown, the first protruding section 11 and the corresponding second protruding section 21 have the same structure.

[0044] Among them, the structures of the first protruding section 11 and the corresponding second protruding section 21 can be the same. For example, the first protruding section 11 can be set to a "J"-shaped structure, and the second protruding section 21 can be set to the same "J"-shaped structure. The same structure of the first protruding section 11 and the corresponding second protruding section 21 can make the structural strength of the first protruding section 11 and the corresponding second protruding section 21 balanced, which is more conducive to making the rear floor frame 100 evenly stressed, avoiding obvious stress-intolerant points (i.e., positions that are prone to breakage), reducing the risk of cracking on one side caused by unbalanced stress between the first protruding section 11 and the corresponding second protruding section 21, and thereby improving the overall stability and safety of the vehicle.

[0045] In some embodiments of the present invention, Figure 1-Figure 3 As shown, at least one connecting crossbeam 3 is formed with a reinforcement structure 31 .

[0046] Among them, at least one connecting crossbeam 3 may be formed with a reinforcement structure 31, for example: one connecting crossbeam 3 may be formed with a reinforcement structure 31, or multiple connecting crossbeams 3 may be formed with reinforcement structures 31. This application takes multiple connecting crossbeams 3 formed with reinforcement structures 31 as an example for explanation. Specifically, the reinforcement structure 31 may be set as a reinforcing rib structure, or the important force-bearing part of the connecting crossbeam 3 may be locally thickened to achieve a reinforcement effect, but this application is not limited thereto, as long as at least one connecting crossbeam 3 is formed with a reinforcement structure 31. The connecting crossbeam 3 is formed with a reinforcement structure 31, which is conducive to improving the structural strength of the connecting crossbeam 3, reducing the risk of cracking of the connecting crossbeam 3, and further improving the overall stability and safety of the vehicle.

[0047] In some embodiments of the present invention, Figure 2 As shown, a top wall of the first longitudinal beam 1 and / or a top wall of the second longitudinal beam 2 is formed with a crush structure 4 , and the crush structure 4 extends along the spacing direction between the first longitudinal beam 1 and the second longitudinal beam 2 .

[0048] The top wall of the first longitudinal beam 1 or the top wall of the second longitudinal beam 2 is formed with a collapse structure 4, or the top wall of the first longitudinal beam 1 and the top wall of the second longitudinal beam 2 are both formed with a collapse structure 4, and the collapse structure 4 may be a collapse groove or a collapse hole structure. This application takes the top wall of the first longitudinal beam 1 and the top wall of the second longitudinal beam 2 as an example for explanation, and the collapse structure 4 may extend along the spacing direction of the first longitudinal beam 1 and the second longitudinal beam 2. By setting the collapse structure 4, when the vehicle is hit from behind, the collapse structure 4 can collapse and absorb energy to reduce the collision force transmitted to the front side of the vehicle, reduce the force transmitted to the passenger compartment, and also reduce the impact force on the passengers in the passenger compartment, which is beneficial to improving the safety of the vehicle, and when the vehicle is provided with a battery pack, it can reduce the impact force on the battery pack.

[0049] In some embodiments of the present invention, Figure 2 As shown, a collapse structure 4 is formed between at least two adjacent connecting beams 3 along the second direction.

[0050] Among them, along the second direction, a crush structure 4 may be formed between at least two adjacent connecting beams 3, for example: along the second direction, a crush structure 4 may be formed between at least two adjacent connecting beams 3, or, along the second direction, a crush structure 4 is formed between the frontmost connecting beam 3 and the front end of the corresponding longitudinal beam, and a crush structure 4 is formed between the rearmost connecting beam 3 and the rear end of the corresponding longitudinal beam. This application takes the example that the crush structure 4 is formed between the frontmost connecting beam 3 and the front end of the corresponding longitudinal beam, between two adjacent connecting beams 3, and between the rearmost connecting beam 3 and the rear end of the corresponding longitudinal beam. When the vehicle collides, the crush structure 4 can collapse to absorb energy to reduce the collision force of the vehicle, and can also reduce the impact force on the passengers in the passenger compartment, which is conducive to further improving the safety of the vehicle.

[0051] In some embodiments of the present invention, Figure 2 As shown, the top wall of the first longitudinal beam 1 and / or the top wall of the second longitudinal beam 2 is recessed toward the bottom of the rear floor frame 100 to form a groove structure, and the groove structure is configured as a collapse structure 4 .

[0052] The top wall of the first longitudinal beam 1 or the top wall of the second longitudinal beam 2 is recessed toward the bottom of the rear floor frame 100 to form a groove structure, or the top wall of the first longitudinal beam 1 and the top wall of the second longitudinal beam 2 are recessed toward the bottom of the rear floor frame 100 to form a groove structure, and the groove structure is configured as a collapse structure 4, which can simplify the collapse structure 4 and facilitate the arrangement of the collapse structure 4. When the vehicle collides, the groove structure can collapse to absorb energy to further reduce the collision force of the vehicle, and can also reduce the impact force on the passengers in the passenger compartment, which is conducive to further improving the safety of the vehicle.

[0053] In some embodiments of the present invention, Figure 1 and Figure 3 As shown, the first longitudinal beam 1 includes a first sub-longitudinal beam 12 and a second sub-longitudinal beam 13 connected to each other, and the second longitudinal beam 2 includes a third sub-longitudinal beam 22 and a fourth sub-longitudinal beam 23 connected to each other. Along the first direction, the first sub-longitudinal beam 12 and the second sub-longitudinal beam 13 are opposite to the third sub-longitudinal beam 22 and the fourth sub-longitudinal beam 23 respectively; along the second direction, the length of the first sub-longitudinal beam 12 is equal to the length of the third sub-longitudinal beam 22, and the length of the second sub-longitudinal beam 13 is equal to the length of the fourth sub-longitudinal beam 23.

[0054] The first longitudinal beam 1 includes a first sub-longitudinal beam 12 and a second sub-longitudinal beam 13 connected to each other. The first sub-longitudinal beam 12 and the second sub-longitudinal beam 13 can be connected by welding or by clamping, but the present application is not limited thereto. The first sub-longitudinal beam 12 and the second sub-longitudinal beam 13 can also be connected by other means, as long as the first sub-longitudinal beam 12 and the second sub-longitudinal beam 13 are connected. The second longitudinal beam 2 includes a third sub-longitudinal beam 22 and a fourth sub-longitudinal beam 23 connected to each other. The third sub-longitudinal beam 22 and the fourth sub-longitudinal beam 23 can be connected by welding or by clamping, but the present application is not limited thereto. The third sub-longitudinal beam 22 and the fourth sub-longitudinal beam 23 can also be connected by other means, as long as the third sub-longitudinal beam 22 and the fourth sub-longitudinal beam 23 are connected.

[0055] Along the first direction, the first sub-longitudinal beam 12 and the second sub-longitudinal beam 13 are respectively opposite to the third sub-longitudinal beam 22 and the fourth sub-longitudinal beam 23, that is, the first sub-longitudinal beam 12 and the third sub-longitudinal beam 22 are arranged correspondingly, and the second sub-longitudinal beam 13 and the fourth sub-longitudinal beam 23 are arranged correspondingly. Along the second direction, the length of the first sub-longitudinal beam 12 is equal to the length of the third sub-longitudinal beam 22, and the length of the second sub-longitudinal beam 13 is equal to the length of the fourth sub-longitudinal beam 23, which is conducive to symmetrically arranging the first longitudinal beam 1 and the second longitudinal beam 2, thereby symmetrically arranging the rear floor frame 100, balancing the forces on both sides of the rear floor frame 100, reducing the risk of cracking on one side caused by uneven forces on both sides of the rear floor frame 100, and thus improving the overall stability and safety of the vehicle.

[0056] In some embodiments of the present invention, Figure 1 and Figure 3As shown, along the first direction, the length dimension of the connection area between the first sub-longitudinal beam 12 and the second sub-longitudinal beam 13 is L3, and the length dimension of the connection area between the third sub-longitudinal beam 22 and the fourth sub-longitudinal beam 23 is L4, satisfying the relationship: L3=L4.

[0057] Among them, along the first direction, the length dimension of the connection area between the first sub-longitudinal beam 12 and the second sub-longitudinal beam 13 is L3, and the length dimension of the connection area between the third sub-longitudinal beam 22 and the fourth sub-longitudinal beam 23 is L4, which satisfies the relationship: L3=L4, that is, the lengths of the connection areas on the front and rear sides of the rear floor frame 100 are the same. Such a setting is conducive to making the strength of the front and rear positions of the rear floor frame 100 uniform, making the front and rear sides of the rear floor frame 100 balanced in force, reducing the risk of fracture of the front connection area or the rear connection area due to the different strengths of the front and rear parts of the rear floor frame 100, thereby improving the overall stability and safety of the vehicle.

[0058] The vehicle according to the embodiment of the utility model includes the rear floor frame 100 of the vehicle of the above embodiment. By providing a plurality of first protruding sections 11 and second protruding sections 21, and the first protruding sections 11 and second protruding sections 21 are respectively connected to the first longitudinal beam 1 and the second longitudinal beam 2 through an integrated thermoforming process, the first longitudinal beam 1 and the second longitudinal beam 2 have high strength and rigidity, and the vehicle load can be dispersed to the entire rear floor frame 100, reducing the risk of stress concentration at the connection between the first longitudinal beam 1, the second longitudinal beam 2 and the connecting cross beam 3, thereby reducing the risk of cracking at the connection between the first longitudinal beam 1, the second longitudinal beam 2 and the connecting cross beam 3, improving the supporting strength of the rear floor frame 100 of the vehicle, and further improving the overall stability and safety of the vehicle.

[0059] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0060] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A rear floor frame of a vehicle, characterized in that: include: A first longitudinal beam and a second longitudinal beam, the first longitudinal beam and the second longitudinal beam are arranged opposite to each other and spaced apart along a first direction, a side of the first longitudinal beam facing the second longitudinal beam has a plurality of first protruding sections protruding toward the second longitudinal beam, the plurality of first protruding sections are arranged sequentially along a second direction, a side of the second longitudinal beam facing the first longitudinal beam has a plurality of second protruding sections protruding toward the first longitudinal beam, the plurality of second protruding sections are arranged sequentially along the second direction, the plurality of first protruding sections correspond to the plurality of second protruding sections one by one, a length of the first protruding section protruding from the first longitudinal beam is equal to a length of the corresponding second protruding section protruding from the second longitudinal beam, and the first direction is perpendicular to the second direction; A plurality of connecting cross beams, wherein the plurality of connecting cross beams are respectively connected between corresponding first protruding sections and corresponding second protruding sections; The first protruding section and the second protruding section are respectively connected to the first longitudinal beam and the second longitudinal beam through an integrated hot forming process.

2. The rear floor frame of a vehicle according to claim 1, characterized in that: Along the second direction, the length dimension of the connection area between the connecting beam and the corresponding first protruding section is L1, and the length dimension of the connection area between the connecting beam and the corresponding second protruding section is L2, satisfying the relationship: L1=L2.

3. The rear floor frame of a vehicle according to claim 1, characterized in that: The first protruding section and the corresponding second protruding section have the same structure.

4. The rear floor frame of a vehicle according to claim 1, characterized in that: At least one of the connecting beams is formed with a reinforcement structure.

5. The rear floor frame of a vehicle according to claim 1, characterized in that: A top wall of the first longitudinal beam and / or a top wall of the second longitudinal beam is formed with a crush structure, and the crush structure extends along a spacing direction between the first longitudinal beam and the second longitudinal beam.

6. The rear floor frame of a vehicle according to claim 5, characterized in that: Along the second direction, the collapse structure is formed between at least two adjacent connecting beams.

7. The rear floor frame of a vehicle according to claim 5, characterized in that: The top wall of the first longitudinal beam and / or the top wall of the second longitudinal beam is recessed toward the bottom of the rear floor frame to form a groove structure, and the groove structure is configured as the collapsed structure.

8. The rear floor frame of a vehicle according to any one of claims 1 to 7, characterized in that: The first longitudinal beam comprises a first sub-longitudinal beam and a second sub-longitudinal beam connected to each other, the second longitudinal beam comprises a third sub-longitudinal beam and a fourth sub-longitudinal beam connected to each other, and along the first direction, the first sub-longitudinal beam and the second sub-longitudinal beam are respectively opposite to the third sub-longitudinal beam and the fourth sub-longitudinal beam; Along the second direction, the length of the first sub-longitudinal beam is equal to the length of the third sub-longitudinal beam, and the length of the second sub-longitudinal beam is equal to the length of the fourth sub-longitudinal beam.

9. The rear floor frame of a vehicle according to claim 8, characterized in that: Along the first direction, the length dimension of the connection area between the first sub-longitudinal beam and the second sub-longitudinal beam is L3, and the length dimension of the connection area between the third sub-longitudinal beam and the fourth sub-longitudinal beam is L4, satisfying the relationship: L3=L4.

10. A vehicle, characterized in that: The invention comprises a rear floor frame of a vehicle according to any one of claims 1 to 9.

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