Rear floor framework structure and vehicle

Abstract

The utility model provides a rear floor framework structure and a vehicle, the rear floor framework structure comprises rear floor longitudinal beam rear sections which are respectively arranged on the left side and the right side, and the rear floor longitudinal beam rear section on each side is provided with a longitudinal beam rear section front part and a longitudinal beam rear section rear part which are connected together; auxiliary frame mounting points are arranged on the front portions of the longitudinal beam rear sections on the two sides, the thickness of the front portion of each longitudinal beam rear section is larger than that of the rear portion of each longitudinal beam rear section, or the thickness of the front portion of each longitudinal beam rear section is the same as that of the rear portion of each longitudinal beam rear section, and a reinforcing plate is arranged on the inner side of the front portion of each longitudinal beam rear section. According to the rear floor framework structure, the thickness of the front portion of each side longitudinal beam rear section is larger than that of the rear portion of each longitudinal beam rear section, or the thickness of the front portion of each side longitudinal beam rear section is the same as that of the rear portion of each side longitudinal beam rear section, and the reinforcing plates are arranged on the inner sides of the front portions of the longitudinal beam rear sections, so that the front portions of the longitudinal beam rear sections form stable areas. And a collision collapse deformation area is formed at the rear part of the longitudinal beam rear section, so that the collision performance of the rear floor longitudinal beam rear section is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a rear floor skeleton structure; at the same time, the utility model also relates to a vehicle provided with the rear floor skeleton structure. Background Technique

[0002] The rear floor skeleton structure is an important part of the vehicle body bottom structure. Especially in the design of a load-bearing vehicle body, the rear floor skeleton is welded to the floor panel to jointly bear the weight and various loads of the whole vehicle. The floor skeleton beam is the main load-bearing structure of the rear floor skeleton, generally in the form of a closed frame to form a complete force system.

[0003] During the driving of the vehicle, the rear floor skeleton structure needs to transfer various loads (such as engine power, braking force, etc.) to other parts of the vehicle body to ensure the stability and safety of the whole vehicle. In the event of a collision, the rear floor skeleton structure can absorb and disperse the collision energy to reduce the injury to the occupants. At present, the structural design of the rear floor skeleton, especially the rear floor longitudinal beam, is unreasonable, resulting in its inability to provide good stiffness support for the subframe mounting points, which is not conducive to improving the installation of the subframe. In addition, the rear floor longitudinal beam structure also has problems of poor collision force transmission and energy absorption effects, which is not conducive to improving the collision safety of the vehicle. Content of the Utility Model

[0004] In view of this, the utility model aims to propose a rear floor skeleton structure to facilitate the installation of the subframe and improve the collision performance.

[0005] To achieve the above object, the technical solution of the utility model is realized as follows:

[0006] A rear floor skeleton structure includes rear sections of rear floor longitudinal beams respectively arranged on the left and right sides, and the rear section of each rear floor longitudinal beam has a front part of the longitudinal beam rear section and a rear part of the longitudinal beam rear section connected together; wherein, subframe mounting points are arranged on the front parts of the longitudinal beam rear sections on both sides, and the thickness of the front part of the longitudinal beam rear section on each side is greater than the thickness of the rear part of the longitudinal beam rear section, or the thickness of the front part of the longitudinal beam rear section and the rear part of the longitudinal beam rear section on each side is the same, and a reinforcing plate is arranged inside the front part of each longitudinal beam rear section.

[0007] Furthermore, a rear floor cross beam is connected between the rear sections of the rear floor longitudinal beams on both sides, and the rear sections of the rear floor longitudinal beams on both sides and the rear floor cross beam are connected to form an I-shaped structure.

[0008] Furthermore, the rear floor cross beam is connected between the front parts of the longitudinal beam rear sections on both sides, and subframe mounting brackets are respectively arranged on the front parts of the longitudinal beam rear sections on both sides, and the subframe mounting points are arranged on the subframe mounting brackets.

[0009] Further, each side of the subframe mounting bracket includes a first mounting plate connected between the front part of the rear section of the longitudinal beam and the rear floor cross beam, and a second mounting plate connected between the first mounting plate and the front part of the rear section of the longitudinal beam; a cavity is formed among the first mounting plate, the second mounting plate, the front part of the rear section of the longitudinal beam and the rear floor cross beam.

[0010] Further, each side of the reinforcing plate includes a first part connected to the front part of the rear section of the longitudinal beam on the same side, and a second part connected to the end of the rear floor cross beam; the first part is arranged following the shape of the front part of the rear section of the longitudinal beam, and the second part is arranged following the shape of the end of the rear floor cross beam.

[0011] Further, the front parts of the rear sections of the longitudinal beams on both sides and the rear floor cross beam are integrally formed, and / or the front parts of the rear sections of the longitudinal beams on each side are laser welded to the rear parts of the longitudinal beams on the same side.

[0012] Further, the rear sections of the rear floor longitudinal beams on both sides and the rear floor cross beam are integrally formed.

[0013] Further, it further includes the front sections of the rear floor longitudinal beams respectively arranged on the left and right sides, and the rear sections of the rear floor longitudinal beams are respectively connected to the rear ends of the front sections of the rear floor longitudinal beams on the same side.

[0014] Further, shock absorber spring mounting points are provided on the front sections of the rear floor longitudinal beams on both sides, and the rear sections of the rear floor longitudinal beams on each side are connected behind the shock absorber spring mounting points on the same side.

[0015] Compared with the prior art, the present utility model has the following advantages:

[0016] For the rear floor skeleton structure of the present utility model, by arranging the subframe mounting points at the front part of the rear section of the longitudinal beam, and the thickness of the front part of the rear section of the longitudinal beam on each side is greater than the thickness of the rear part of the rear section of the longitudinal beam, or the thickness of the front part of the rear section of the longitudinal beam and the rear part of the rear section of the longitudinal beam on each side is the same, and a reinforcing plate is provided on the inner side of the front part of each rear section of the longitudinal beam, a stable area is formed at the front part of the rear section of the longitudinal beam, and a collision collapse and deformation area is formed at the rear part of the rear section of the longitudinal beam, which can not only provide stiffness support for the subframe mounting points, but also facilitate the realization of the design of stable front part and energy absorption by deformation of the rear part of the rear section of the longitudinal beam, thereby facilitating the improvement of the collision performance of the rear section of the rear floor longitudinal beam, and the structure of the entire rear section of the rear floor longitudinal beam is simple and easy to arrange and implement.

[0017] In addition, the rear floor crossbeam and the front part of the rear floor longitudinal beam form an I-shaped structure, which can utilize the advantage of the good effect of the I-shaped structure in receiving and transmitting collision forces, thereby enhancing the overall stability. Moreover, the collision force on the rear section of the rear floor longitudinal beam can also be dispersed and transmitted along the left-right direction of the vehicle body through the rear floor crossbeam. By respectively arranging subframe mounting brackets at the front part of the rear section of the longitudinal beam and setting the subframe mounting points on the subframe mounting brackets, it is beneficial to the installation of the subframe on the rear section of the rear floor longitudinal beam. The structures of the first mounting plate and the second mounting plate are simple and easy to arrange and implement. The setting of the cavities between the first mounting plate, the second mounting plate, the front part of the rear section of the longitudinal beam, and the rear floor crossbeam not only facilitates the installation of the subframe, but also can improve the structural strength at the subframe mounting points and the absorption effect of collision forces.

[0018] In addition, the first part of the reinforcing plate is formed to follow the shape of the front part of the rear section of the longitudinal beam, and the second part is formed to follow the shape of the end of the rear floor crossbeam, which is beneficial to improving the strength effect of the front part of the rear section of the longitudinal beam and further enhancing the stiffness support effect on the subframe mounting points. The front parts of the rear sections of the two longitudinal beams and the rear floor crossbeam are integrally formed, which is beneficial to improving the connection strength and processing efficiency among the three; the laser welding connection between the front part of the rear section of the longitudinal beam and the rear part of the rear section of the longitudinal beam has the advantages of being easy to implement and having a good connection effect.

[0019] Furthermore, the rear sections of the two rear floor longitudinal beams and the rear floor crossbeam are integrally formed, which not only facilitates improving the processing efficiency and reducing the production cost, but also is beneficial to enhancing the structural strength and is conducive to the rear floor skeleton to disperse and transmit collision forces. The shock absorber spring mounting points provided on the front section of the rear floor longitudinal beam are beneficial to the installation of the shock absorber springs.

[0020] In addition, another object of the present invention is to provide a vehicle, in which the rear floor skeleton structure as described above is provided in the vehicle body.

[0021] For the vehicle of the present invention, by providing the rear floor skeleton structure as above, it is beneficial to improve the collision safety of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings forming a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0023] Figure 1 is a schematic structural diagram of the rear floor skeleton structure according to an embodiment of the present invention on the vehicle body;

[0024] Figure 2 is a schematic structural diagram of the rear floor skeleton structure according to an embodiment of the present invention;

[0025] Figure 3Schematic diagram of a partial structure of the rear floor skeleton structure according to an embodiment of the present utility model from one perspective;

[0026] Figure 4 Schematic diagram of a partial structure of the rear floor skeleton structure according to an embodiment of the present utility model from another perspective;

[0027] Figure 5 Schematic diagram of the reinforcing plate according to an embodiment of the present utility model;

[0028] Figure 6 Schematic diagram of the subframe mounting bracket according to an embodiment of the present utility model.

[0029] Explanation of reference numerals:

[0030] 1. Rear section of rear floor longitudinal beam; 2. Rear floor cross beam; 3. Reinforcing plate; 4. Subframe mounting bracket; 5. Front section of rear floor longitudinal beam; 6. Rear floor;

[0031] 101. Front part of rear section of longitudinal beam; 102. Rear part of rear section of longitudinal beam;

[0032] 301. First part; 302. Second part;

[0033] 401. First mounting plate; 402. Second mounting plate; 4021. Upward flange; 4022. Side flange; 403. Subframe mounting point;

[0034] 501. Shock absorber spring mounting point. Detailed implementation manners

[0035] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0036] In the description of the present utility model, it should be noted that if terms indicating orientation or positional relationship such as "upper", "lower", "inner", "back", etc. appear, they are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, if terms such as "first" and "second" appear, they are also only for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0037] The present utility model will be described in detail below with reference to the drawings and in combination with embodiments.

[0038] This embodiment relates to a rear floor skeleton structure, aiming to solve the problems in the prior art that the support effect of the rear floor skeleton on the subframe mounting point 403 is poor, and the transmission and absorption effects of collision forces are poor.

[0039] In terms of overall structure, the rear floor frame structure of this embodiment includes rear sections 1 of the rear floor longitudinal beams disposed on the left and right sides, and each side rear section 1 of the rear floor longitudinal beams has a longitudinal beam rear section front portion 101 and a longitudinal beam rear section rear portion 102 connected together. Among them, the front sections 101 of the longitudinal beams on both sides are provided with sub-frame mounting points 403, and the thickness of the front sections 101 of the longitudinal beams on each side is greater than the thickness of the longitudinal beam rear section rear portion 102, or the thickness of the front sections 101 of the longitudinal beams on each side and the longitudinal beam rear section rear portion 102 are the same, and a reinforcing plate 3 is provided on the inner side of the front sections 101 of the longitudinal beams.

[0040] The rear floor skeleton structure described in this embodiment is achieved by arranging the subframe mounting point 403 at the front portion 101 of the rear section of the longitudinal beam, and the thickness of the front portion 101 of the rear section of each side longitudinal beam is greater than the thickness of the rear portion 102 of the rear section of the longitudinal beam, or the thickness of the front portion 101 of the rear section of each side longitudinal beam is the same as that of the rear portion 102 of the rear section of the longitudinal beam, and a reinforcing plate 3 is provided on the inner side of the front portion 101 of the rear section of each longitudinal beam, so that the front portion 101 of the rear section of the longitudinal beam forms a stable area, and the rear portion 102 of the rear section of the longitudinal beam forms a collision crushing deformation area, which can not only provide rigidity support for the subframe mounting point 403, but also facilitate the realization of the structure of the front portion 101 of the rear section of the longitudinal beam to stabilize the rear deformation and energy absorption, thereby facilitating the improvement of the collision performance of the rear section 1 of the rear floor longitudinal beam, and the structure of the entire rear floor longitudinal beam rear section 1 is simple and easy to arrange and implement.

[0041] Based on the above overall introduction, the rear floor frame structure described in this embodiment is an exemplary structure such as Figure 1 and Figure 2 As shown in . The rear floor longitudinal beam rear section 1 is respectively arranged at the left and right sides of the rear part of the rear floor 6. The cross section of the rear floor longitudinal beam rear section 1 is roughly "L" shaped, with the transverse part located at the top and the longitudinal part located at the inner side of the transverse part, and a first cavity is defined between the rear floor longitudinal beam rear section 1 and the rear floor 6. Here, the structure of the rear floor longitudinal beam rear section 1 is simple, and the setting of the first cavity is also conducive to improving the transmission and absorption effect of the rear floor longitudinal beam rear section 1 on the collision force.

[0042] As a preferred embodiment, Figure 2 As shown in the figure, the rear floor cross beam 2 is connected between the rear sections 1 of the rear floor longitudinal beams on both sides, and the rear sections 1 of the rear floor longitudinal beams on both sides are connected with the rear floor cross beam 2 to form an I-shaped structure. The I-shaped structure here has the characteristics of good collision force bearing and dispersion effect, which is not only conducive to enhancing the connection strength and stability of the rear sections 1 of the rear floor longitudinal beams on both sides and the rear floor cross beam 2, but also conducive to the collision force on the rear section 1 of the rear floor longitudinal beam being transmitted along the left and right direction of the whole vehicle through the rear floor cross beam 2, which is conducive to enriching the transmission path of the collision force.

[0043] Specifically in terms of the structure, the cross-section of the rear floor crossbeam 2 is in a "ji" shape, and a second cavity is formed between the rear floor crossbeam 2 and the rear floor 6 to enhance the transmission and absorption effect of the collision force of the rear floor crossbeam 2 in the left-right direction of the whole vehicle. In addition, the width of the end of the rear floor crossbeam 2 is gradually widened along the direction close to the rear section 1 of the rear floor longitudinal beam at the same end, which is beneficial to enhancing the connection firmness between the rear floor crossbeam 2 and the rear section 1 of the rear floor longitudinal beam and the structural stability during use.

[0044] As a preferred implementation manner, the rear floor crossbeam 2 is connected between the front parts 101 of the rear sections of the two side longitudinal beams, and subframe mounting brackets 4 are respectively provided on the front parts 101 of the rear sections of the two side longitudinal beams, and subframe mounting points 403 are provided on the subframe mounting brackets 4. Here, connecting the rear floor crossbeam 2 between the front parts 101 of the rear sections of the longitudinal beams is beneficial to further improving the structural stability of the front parts 101 of the rear sections of the longitudinal beams and the supporting performance of the subframe mounting points 403. By arranging the subframe mounting points 403 on the subframe mounting brackets 4, it is beneficial to the installation of the rear subframe on the rear section 1 of the rear floor longitudinal beam and also has good installation stability.

[0045] As a feasible implementation manner, the front parts 101 of the rear sections of the two side longitudinal beams and the rear floor crossbeam 2 can be integrally formed, for example, which is beneficial to improving the connection strength and processing efficiency among the three. Specifically in implementation, the front parts 101 of the rear sections of the two side longitudinal beams and the rear floor crossbeam 2 are preferably integrally hot formed. During the integral hot forming process, the front parts 101 of the rear sections of the two side longitudinal beams and the rear floor crossbeam 2 are formed at a high temperature state, and higher forming accuracy and surface quality can be obtained. The integral hot forming processing method helps to reduce structural defects, thereby being beneficial to improving the reliability and stability of the structures of the front parts 101 of the rear sections of the two side longitudinal beams and the rear floor crossbeam 2.

[0046] When the front parts 101 of the rear sections of the two side longitudinal beams and the rear floor crossbeam 2 are integrally formed, the front part 101 of each side longitudinal beam rear section and the rear part 102 of the longitudinal beam rear section can be connected by laser welding, for example. Laser welding can use a high-energy laser beam to locally heat the front part 101 of the longitudinal beam rear section and the rear part 102 of the longitudinal beam rear section to achieve rapid melting and solidification, thereby significantly shortening the welding cycle and further improving the production efficiency. In addition, specifically in implementation, according to the design requirements, the thicknesses of the front part 101 of the longitudinal beam rear section and the rear part 102 of the longitudinal beam rear section can be made the same, and a reinforcing plate 3 can be further provided. Of course, the thickness of the front part 101 of the longitudinal beam rear section can also be made greater than the thickness of the rear part 102 of the longitudinal beam rear section.

[0047] As another feasible implementation, in this embodiment, the rear sections 1 of the longitudinal beams on both sides of the rear floor and the rear floor cross beam 2 can be integrally formed, for example. This not only helps improve processing efficiency and reduce production costs, but also helps improve structural strength and facilitates the rear floor skeleton structure to disperse and transmit collision forces. During specific implementation, the rear sections 1 of the longitudinal beams on both sides and the rear floor cross beam 2 are also preferably integrally hot formed. At this time, the thicknesses of the rear sections 1 of the longitudinal beams on both sides and the rear floor cross beam 2 can be the same, and a reinforcing plate 3 is provided. Alternatively, the thicknesses of the rear sections 1 of the longitudinal beams on both sides and the rear floor cross beam 2 can also be different, which can be determined according to requirements. During specific implementation, for example, the thicknesses of the three can be made different through processes such as differential thickness plates.

[0048] During specific implementation, when the thicknesses of the front part 101 and the rear part 102 of the rear section of the longitudinal beam are the same, the thickness of both can be between 1.2 mm and 1.5 mm. For example, the thickness of both can be 1.2 mm, 1.3 mm, 1.4 mm, or 1.5 mm, and the preferred thickness is 1.4 mm. When the thickness of the front part 101 of the rear section of the longitudinal beam is greater than the thickness of the rear part 102 of the rear section of the longitudinal beam, the thickness of the front part 101 of the rear section of the longitudinal beam is between 1.6 mm and 2 mm, and the thickness of the rear part 102 of the rear section of the longitudinal beam is between 1.2 mm and 1.5 mm. The thickness of the front part 101 of the rear section of the longitudinal beam can be, for example, 1.6 mm, 1.7 mm, 1.8 mm, 1.9 mm, or 2 mm, and the preferred values are 1.6 mm or 1.8 mm. The thickness of the rear part 102 of the rear section of the longitudinal beam can be, for example, 1.2 mm, 1.3 mm, 1.4 mm, or 1.5 mm, and the preferred value is 1.4 mm. Of course, during specific implementation, the thickness values of the front part 101 and the rear part 102 of the rear section of the longitudinal beam can both be determined according to usage requirements and are not limited to the specific values above, as long as the thickness values meet the usage requirements.

[0049] As a preferred implementation, as Figure 4 and Figure 5 shown, each side reinforcing plate 3 includes a first part 301 connected to the front part 101 of the rear section of the longitudinal beam on the same side and a second part 302 connected to the end of the rear floor cross beam 2. Among them, the first part 301 is arranged conforming to the front part 101 of the rear section of the longitudinal beam, and the second part 302 is arranged conforming to the end of the rear floor cross beam 2.

[0050] It should be noted that the first part 301 being configured to conform to the front part 101 of the rear section of the longitudinal beam means that their shapes and specifications are the same, that is, the first part 301 covers the inner side of the entire front part 101 of the rear section of the longitudinal beam. The second part 302 being configured to conform to the rear part 102 of the rear section of the longitudinal beam means that their shapes and specifications are the same, and the second part 302 covers the inner side of the rear part 102 of the rear section of the longitudinal beam. In this way, the thickness of the cooperation between the front part 101 of the rear section of the longitudinal beam and the reinforcement plate 3 is greater than the thickness of the rear part 102 of the rear section of the longitudinal beam, thereby making the front structure of the rear floor rear longitudinal beam 1 stable, and the rear part absorbs energy by means of collapse.

[0051] In this embodiment, an exemplary structure of the subframe mounting bracket 4 is as Figure 6 shown in the figure. Each side subframe mounting bracket 4 includes a first mounting plate 401 connected between the front part 101 of the rear section of the longitudinal beam and the rear floor cross beam 2, and a second mounting plate 402 connected between the first mounting plate 401 and the front part 101 of the rear section of the longitudinal beam. A cavity is formed among the first mounting plate 401, the second mounting plate 402, the front part 101 of the rear section of the longitudinal beam, and the rear floor cross beam 2. Here, the structures of the first mounting plate 401 and the second mounting plate 402 are simple and easy to arrange and implement. The setting of the cavity among the first mounting plate 401, the second mounting plate 402, the front part 101 of the rear section of the longitudinal beam, and the rear floor cross beam 2 not only facilitates the installation of the subframe, but also can improve the structural strength at the subframe mounting point 403 and the absorption effect of the collision force.

[0052] Specifically in terms of the structure, still referring to Figure 6 the figure shown, the first mounting plate 401 is convex downward relative to the rear section of the rear floor longitudinal beam 1, and an open cavity is formed between the first mounting plate 401, the front part 101 of the rear section of the longitudinal beam, and the rear floor cross beam 2 with the opening facing outward. The second mounting plate 402 is arranged on the outer side of each first mounting plate 401 corresponding to each opening to facilitate the formation of the above-mentioned cavity. For the convenience of the installation of the second mounting plate 402, the top of the second mounting plate 402 is provided with an upwardly turned-up flange 4021, and the bottom is provided with a downwardly turned-up flange that turns towards the first mounting plate 401. Among them, the second mounting plate 402 is welded to the front part 101 of the rear section of the longitudinal beam through the upwardly turned-up flange 4021 and is welded to the inner side of the bottom of the first mounting plate 401 through the downwardly turned-up flange.

[0053] In addition, to further improve the strength of the subframe mounting bracket 4, at least one side of the second mounting plate 402 is also provided with a side flange 4022 that turns towards the first mounting plate 401, and the second mounting plate 402 is welded to the first mounting plate 401 through the side flange 4022. In this embodiment, the structures of the flanges on the second mounting plate 402 are simple, easy to process and form, and have good use effects.

[0054] The subframe mounting point 403 in this embodiment includes a mounting hole that penetrates the bottom of the first mounting plate 401 and is provided with a downward flanging, and has a simple structure and is convenient for processing and forming. Of course, in addition to using the mounting hole, the subframe mounting point 403 can also adopt other structures that are conducive to mounting the subframe on the subframe mounting bracket 4, as long as the use requirements are met. Furthermore, in addition to adopting the structural form of the cooperation of the first mounting plate 401 and the second mounting plate 402, the subframe mounting bracket 4 in this embodiment can also adopt an integral structural form, as long as the use requirements are met.

[0055] As Figure 1 As shown in [the figure], the rear floor skeleton structure of this embodiment further includes front sections 5 of rear floor longitudinal beams provided on both the left and right sides, and the rear sections 1 of each rear floor longitudinal beam are respectively connected to the rear ends of the front sections 5 of the rear floor longitudinal beams on the same side. The collision force transmitted from the front end of the vehicle body can be respectively transmitted backward through the front sections 5 of the rear floor longitudinal beams to the rear sections 1 of the rear floor longitudinal beams. Further, shock absorber spring mounting points 501 are provided on the front sections 5 of the rear floor longitudinal beams on both sides, and the rear sections 1 of each side of the rear floor longitudinal beam are connected behind the shock absorber spring mounting points 501 on the same side. Here, the shock absorber spring mounting points 501 provided on the front sections 5 of the rear floor longitudinal beams are conducive to the installation of the shock absorber springs.

[0056] The rear floor skeleton structure of this embodiment, by optimizing the structure, thickness relationship, and forming method of the rear section 1 of the rear floor longitudinal beam and the rear floor cross beam 2, is conducive to improving the support strength of the rear section 1 of the rear floor longitudinal beam for the subframe mounting point 403, as well as the transmission and dispersion effects of the collision force. The collision force can also be absorbed by the collapse of the rear part 102 of the rear section of the longitudinal beam, thereby improving the service performance of the rear floor skeleton structure in terms of the installation of the subframe and the dispersion and transmission effects of the collision force.

[0057] In addition, this embodiment also relates to a vehicle, and the vehicle body of the vehicle is provided with the rear floor skeleton structure as described above.

[0058] For the vehicle described in this embodiment, by providing the rear floor skeleton structure as above, it is conducive to improving the collision safety of the vehicle.

[0059] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A rear floor frame structure, characterized in that: It comprises rear floor longitudinal beam rear sections (1) arranged on the left and right sides, and the rear floor longitudinal beam rear sections (1) on each side have a longitudinal beam rear section front portion (101) and a longitudinal beam rear section rear portion (102) connected together; Wherein, a subframe mounting point (403) is provided on the front portion (101) of the rear section of the longitudinal beam on both sides, and the thickness of the front portion (101) of the rear section of the longitudinal beam on each side is greater than the thickness of the rear portion (102) of the rear section of the longitudinal beam, or the thickness of the front portion (101) of the rear section of the longitudinal beam on each side is the same as the thickness of the rear portion (102) of the rear section of the longitudinal beam, and a reinforcing plate (3) is provided on the inner side of the front portion (101) of the rear section of each longitudinal beam.

2. The rear floor frame structure according to claim 1, characterized in that: A rear floor cross beam (2) is connected between the rear sections (1) of the rear floor longitudinal beams on both sides, and the rear sections (1) of the rear floor longitudinal beams on both sides are connected to the rear floor cross beam (2) to form an I-shaped structure.

3. The rear floor frame structure according to claim 2, characterized in that: The rear floor crossbeam (2) is connected between the front parts (101) of the rear sections of the longitudinal beams on both sides, and the front parts (101) of the rear sections of the longitudinal beams on both sides are respectively provided with subframe mounting brackets (4), and the subframe mounting brackets (4) are provided with the subframe mounting points (403).

4. The rear floor frame structure according to claim 3, characterized in that: The sub-frame mounting bracket (4) on each side comprises a first mounting plate (401) connected between the front portion (101) of the rear section of the longitudinal beam and the rear floor cross beam (2), and a second mounting plate (402) connected between the first mounting plate (401) and the front portion (101) of the rear section of the longitudinal beam; A cavity is formed between the first mounting plate (401), the second mounting plate (402), the front portion of the rear section of the longitudinal beam (101), and the rear floor cross beam (2).

5. The rear floor frame structure according to claim 3, characterized in that: The reinforcing plate (3) on each side comprises a first portion (301) connected to the front portion (101) of the rear section of the longitudinal beam on the same side, and a second portion (302) connected to the end of the rear floor cross beam (2); The first part (301) is arranged in conformity with the front part (101) of the rear section of the longitudinal beam, and the second part (302) is arranged in conformity with the end of the rear floor cross beam (2).

6. The rear floor frame structure according to claim 3, characterized in that: The front portion (101) of the rear section of the longitudinal beam on both sides is integrally formed with the rear floor cross beam (2), and / or, The front part (101) of the rear section of the longitudinal beam on each side is connected to the rear part (102) of the rear section of the longitudinal beam by laser welding.

7. The rear floor frame structure according to claim 3, characterized in that: The rear sections (1) of the rear floor longitudinal beams on both sides and the rear floor cross beams (2) are integrally formed.

8. The rear floor frame structure according to any one of claims 1 to 7, characterized in that: It also includes rear floor longitudinal beam front sections (5) arranged on the left and right sides, and each rear floor longitudinal beam rear section (1) is respectively connected to the rear end of the rear floor longitudinal beam front section (5) on the same side.

9. The rear floor frame structure according to claim 8, characterized in that: The front sections (5) of the rear floor longitudinal beams on both sides are provided with shock absorber spring mounting points (501), and the rear sections (1) of the rear floor longitudinal beams on each side are connected to the rear of the shock absorber spring mounting points (501) on the same side.

10. A vehicle, characterized in that: The vehicle body is provided with the rear floor frame structure according to any one of claims 1 to 9.

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