Rear floor assembly, vehicle body assembly and vehicle

Abstract

The utility model relates to the technical field of rear floors, and provides a rear floor assembly, a vehicle body assembly and a vehicle, and the rear floor assembly comprises two rear longitudinal beams and a plurality of sleeve pieces. The two rear longitudinal beams are arranged in a spaced mode, the casing pipe pieces are arranged on the rear longitudinal beams in a penetrating mode in the first direction, the casing pipe pieces are arranged in the extending direction of the rear longitudinal beams in a spaced mode, and the casing pipe pieces are used for allowing the connecting pieces to be arranged in a penetrating mode and connected with an upper vehicle body. According to the rear floor assembly, when the rear floor assembly is connected with the upper vehicle body, the rear longitudinal beam of the rear floor assembly is connected with the upper vehicle body by penetrating the connecting pieces through the corresponding sleeve pieces, and therefore when the rear floor assembly needs to be decoupled from the upper vehicle body, only the connecting pieces need to be taken down from the corresponding sleeve pieces, and the rear longitudinal beam of the rear floor assembly is connected with the upper vehicle body. Therefore, decoupling of the rear longitudinal beam and the upper vehicle body can be achieved, and the whole process is rapid and efficient.

Description

Technical Field

[0001] The utility model relates to the technical field of rear floors, and in particular provides a rear floor assembly, a vehicle body assembly and a vehicle. Background Art

[0002] The rear floor assembly is a crucial component of the vehicle's chassis structure, typically located at the rear. It primarily includes the rear floor, rear anti-collision beam, and supporting structure. Its primary functions include: structural support, providing strength and overall stability to the rear of the vehicle; safety protection, absorbing impact and protecting occupants in the event of a collision; and mounting components, providing a location for the rear suspension and exhaust systems.

[0003] However, the rear floor assembly and the upper body are usually connected by welding, which also makes it impossible for the rear floor assembly to be decoupled from the upper body. Utility Model Content

[0004] The purpose of the utility model is to provide a rear floor assembly, a body assembly and a vehicle, aiming to solve the problem that the existing rear floor assembly is difficult to decouple from the upper body.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] In a first aspect, an embodiment of the present application provides a rear floor assembly, comprising:

[0007] At least two rear longitudinal beams; each of the rear longitudinal beams is arranged at intervals, and,

[0008] A plurality of sleeve members; the sleeve members are passed through along a first direction and connected to the rear longitudinal beam, and the sleeve members are spaced apart along the extending direction of the rear longitudinal beam, and the sleeve members are used for the connecting member to pass through and be connected to the upper body.

[0009] Beneficial effects of the present invention: The rear floor assembly provided by the present invention, when connected to the upper body, realizes the connection between the rear longitudinal beam of the rear floor assembly and the upper body by passing the corresponding sleeve parts through the connecting parts. In this way, when it is necessary to decouple from the upper body, it is only necessary to remove each connecting part from the corresponding sleeve part to realize the decoupling of the rear longitudinal beam and the upper body. The overall process is fast and efficient.

[0010] In some embodiments, the rear longitudinal beam has a head end and a tail end opposite to the head end; at least one of the sleeve members is disposed near the head end; and at least another sleeve member is disposed near the tail end.

[0011] By adopting the above technical solution, the layout position of each sleeve member on the corresponding rear longitudinal beam also follows the principle of arranging at least one of the sleeve members near the head end of the rear longitudinal beam, and at least another sleeve member near the tail end of the rear longitudinal beam, so as to improve the stability of the connection between the head and tail ends of the rear longitudinal beam and the upper body.

[0012] In some embodiments, the rear floor assembly includes a rear cross beam, opposite ends of which are respectively connected to corresponding rear longitudinal beams; wherein at least two sleeve members are located at positions where the rear longitudinal beams are connected to the rear cross beam.

[0013] By adopting the above technical solution, the rear cross beam is connected to the rear longitudinal beam and encloses a frame structure to improve the structural stability of the rear floor assembly. In addition, the setting position of the rear cross beam usually corresponds to the position of the cross beam of the upper body. Therefore, at least two sleeve members are provided at the position where the rear longitudinal beam is connected to the rear cross beam to further improve the connection strength between the rear longitudinal beam and the upper body.

[0014] In some embodiments, the rear cross beam and the rear longitudinal beam are integrally formed; and / or,

[0015] There are two rear cross beams, and the connection between the rear cross beam and the rear longitudinal beam is a smooth transition.

[0016] By adopting the above technical solution, the rear cross member and rear longitudinal member can be formed through integrated hot pressing to improve the production efficiency of the rear floor assembly, as well as the dimensional accuracy of the components and the sealing stability of the connection with other body structures, thereby reducing the corresponding cost investment; furthermore, the smooth transition at the connection between the two can reduce stress concentration and improve structural strength.

[0017] In some embodiments, the rear cross beam close to the head end has a first straight portion facing the head end, and each of the rear longitudinal beams has a second straight portion connected to the first straight portion.

[0018] By adopting the above technical solution and the design of the straight portion, the difficulty of hot stamping can be reduced and the production and processing efficiency can be improved.

[0019] In some embodiments, the rear longitudinal beam includes a beam body bent to form a receiving groove and a cover plate covering the beam body and sealing the open end of the receiving groove, and the sleeve member is sequentially passed through the beam body and the cover plate.

[0020] By adopting the above technical solution, the rear longitudinal beam is a hollow beam structure formed by the beam body with the accommodating groove and the cover plate, which is lighter in weight, has higher structural strength, and is more convenient when installing the sleeve.

[0021] In some embodiments, the sleeve member includes a tube body and a flange formed at at least one end of the tube body, and the flange abuts against the beam body or the cover plate.

[0022] By adopting the above technical solution, the flange is connected to the beam body or the cover plate to achieve the connection between the entire sleeve and the rear longitudinal beam.

[0023] In some embodiments, the cover plate is arranged on the beam body at an angle.

[0024] By adopting the above technical solution, the inclined cover plate can allow rainwater or accumulated water to pass through quickly, thereby reducing the probability of liquid accumulation in the inner cavity of the rear longitudinal beam.

[0025] In some embodiments, the rear longitudinal beam has an energy absorbing section, a main structure section, and a sealing connection section connected in sequence along the extension direction, the rear floor assembly includes a collision longitudinal beam, the collision longitudinal beam is connected to the energy absorbing section, and the sealing connection section is used to connect to the chemical cabin.

[0026] By adopting the above technical solution, the structural strength of the rear longitudinal beam is differentiated and set, which is more conducive to connection with the upper body and the anti-collision structure.

[0027] In some embodiments, the rear floor assembly further includes a mounting crossbeam provided on the corresponding rear crossbeam, wherein the mounting crossbeam is located on a side of the rear crossbeam facing the upper vehicle body.

[0028] By adopting the above technical solution, additional mounting crossbeams are provided to increase the connection points with the upper vehicle body, while at the same time, corresponding protection is provided for the one-piece rear crossbeam and rear longitudinal beam.

[0029] In a second aspect, an embodiment of the present application further provides a vehicle body assembly, comprising:

[0030] A chemical cabin, the chemical cabin comprising a threshold beam, the threshold beam having a top surface and an inner side surface connected to the top surface;

[0031] the aforementioned rear floor assembly;

[0032] a first connecting member, the first connecting member passing through the top surface along a first direction and connected to a rear longitudinal beam of the rear floor assembly;

[0033] The second connecting member is passed through the rear longitudinal beam of the rear floor assembly along a second direction and is connected to the inner side surface. The first direction and the second direction are arranged at an angle.

[0034] Beneficial effects of the present invention: The vehicle body assembly provided by the present invention connects the chemical cabin and the rear floor assembly by setting connecting parts in two directions, which not only satisfies the requirement of detachability but also improves the problem of poor stability of the connection between the two.

[0035] In a third aspect, an embodiment of the present application further provides a vehicle comprising the above-mentioned body assembly.

[0036] Beneficial effects of the present invention: The vehicle provided by the present invention, based on the above-mentioned vehicle body assembly, is easier to disassemble and assemble the rear floor assembly and the chemical cabin, making it easier to maintain the chemical cabin separately. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0038] Figure 1 A top view of the rear floor assembly provided in an embodiment of the present utility model;

[0039] Figure 2 for Figure 1 Cross-section at AA in the middle;

[0040] Figure 3 An exploded view of the rear floor assembly provided in an embodiment of the present utility model;

[0041] Figure 4 A top view of a vehicle body assembly provided by an embodiment of the present utility model;

[0042] Figure 5 for Figure 4 Cross-section at the middle BB;

[0043] Figure 6 A schematic structural diagram of a vehicle provided in an embodiment of the present utility model.

[0044] Among them, the reference numerals in the figures are:

[0045] 1000, vehicle;

[0046] 100, body assembly; 200, wheels; 300, battery device; 400, motor;

[0047] 10. Rear floor assembly; 11. Rear longitudinal beam; 12. Sleeve; 11a. Head end; 11b. Tail end; 12. Rear cross beam; 12a. First straight portion; 11c. Second straight portion; 111. Beam body; 112. Cover plate; 121. Tube body; 122. Flanged edge; 11d. Energy absorption section; 11e. Main structure section; 11f. Sealed connection section; 13. Collision longitudinal beam; 14. Mounting cross beam; 11g. First beam body; 11h. First beam extension;

[0048] 20. Chemical chamber; 21. Door sill beam; 21a. Top surface; 21b. Inner surface; 211. Second beam main body; 212. Second beam extension;

[0049] 30. First connecting member; 40. Second connecting member;

[0050] X, first direction; Y, second direction; Z, third direction. DETAILED DESCRIPTION

[0051] The following describes in detail embodiments of the present invention, examples of which 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 intended to explain the present invention, and should not be construed as limiting the present invention.

[0052] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship 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 device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0053] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0054] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0055] In the vehicle body field, the rear floor assembly is a crucial component of the vehicle chassis structure, typically located at the rear of the vehicle. It primarily includes the rear floor, rear anti-collision beam, and supporting structure. Its primary functions include: structural support, providing structural strength and overall stability at the rear of the vehicle; safety protection, absorbing impact forces and protecting occupants in the event of a collision; and mounting components, providing a location for the rear suspension and exhaust systems.

[0056] However, the rear floor assembly and the upper body are usually connected by welding, which also makes it impossible for the rear floor assembly to be decoupled from the upper body.

[0057] In view of this, the present application provides a rear floor assembly, which adds multiple sleeve parts, and each sleeve part is arranged at intervals along the extension direction of the rear longitudinal beam. The sleeve parts are used to form a corresponding mounting hole structure to meet the needs of the connecting parts to pass through and connect with the upper body. In this way, when the rear floor assembly needs to be decoupled from the upper body, it is only necessary to remove the connecting parts from the corresponding sleeve parts.

[0058] First, please refer to Figure 1 and Figure 2 An embodiment of the present application provides a rear floor assembly 10 including a rear longitudinal beam 11 and a sleeve member 12 .

[0059] Here, the rear longitudinal beam 11 is a beam structure extending longitudinally within the rear floor assembly 10 and is also the beam structure that connects to the upper vehicle body. Typically, there are two rear longitudinal beams 11, spaced apart along the width of the vehicle body. Of course, there may be more than two rear longitudinal beams 11, each spaced apart along the width of the vehicle body. The sleeve 12 is a tubular structural member that mates with a connector, such as a screw, pin, or rivet. Once connected to the rear longitudinal beam 11, its location on the rear longitudinal beam 11 serves as the connection point with the upper vehicle body.

[0060] The sleeve members 12 are passed through along the first direction X and connected to the rear longitudinal beam 11 , and the sleeve members 12 are spaced apart along the extending direction of the rear longitudinal beam 11 . The sleeve members 12 are used for the connecting members to pass through and connect to the upper body.

[0061] It is understood that the sleeve 12 should be able to penetrate the rear longitudinal beam 11. Therefore, the first direction X can be the thickness direction of the rear longitudinal beam 11, as well as a direction forming an angle with the thickness direction of the rear longitudinal beam 11. Furthermore, after the sleeve 12 is penetrated, it is connected to the rear longitudinal beam 11, and the two can be connected by welding. Alternatively, after the sleeve 12 is penetrated, it can be connected to the rear longitudinal beam 11 by riveting.

[0062] The extending direction of the rear longitudinal beam 11 may refer to the length direction of the rear longitudinal beam 11 . Since the rear longitudinal beam 11 has structural curvature, etc., the extending direction may also refer to the elongation direction of the rear longitudinal beam 11 .

[0063] In order to improve the connection stability between the rear longitudinal beam 11 and the upper body, a plurality of sleeve members 12 should be provided on the rear longitudinal beam 11, and should be spaced apart along the extension direction of the rear longitudinal beam 11. For example, the spacing between two adjacent sleeve members 12 can be set between 200 mm and 300 mm, and as many sleeve members 12 as possible should be provided within this spacing range.

[0064] Of course, according to actual use requirements, at least two sleeve members 12 can be set at the same connection point. For example, each sleeve member 12 is arranged along the width direction of the rear longitudinal beam 11.

[0065] The rear floor assembly 10 provided by the present invention, when connected to the upper body, connects the rear longitudinal beam 11 of the rear floor assembly 10 to the upper body by passing the corresponding sleeve members 12 through the connecting members. In this way, when it is necessary to decouple the rear floor assembly 10 from the upper body, it is only necessary to remove the respective connecting members from the corresponding sleeve members 12 to achieve decoupling of the rear longitudinal beam 11 from the upper body. The overall process is fast and efficient.

[0066] Please refer to Figure 1 In some embodiments, the rear longitudinal beam 11 has a head end 11a and a tail end 11b opposite to the head end 11a; among each sleeve member 12, at least one sleeve member 12 is arranged near the head end 11a; and at least another sleeve member 12 is arranged near the tail end 11b.

[0067] It is understood that the front end 11a of the rear longitudinal beam 11 refers to the end facing the front of the vehicle, and the front end 11a is also the end connected to other vehicle body structures such as the chemical chamber. The rear end 11b of the rear longitudinal beam 11 refers to the end facing the rear of the vehicle, and the rear end 11b is also the end connected to other vehicle body structures such as the anti-collision beam. In addition, the area near the end of the rear longitudinal beam 11 should refer to the area from the two end surfaces of the rear longitudinal beam 11 to the rear longitudinal beam 11 itself. For example, it can refer to the area from the end surface of the rear longitudinal beam 11 to the area on the rear longitudinal beam 11 ranging from 200mm to 500mm.

[0068] In a design that is decoupled from the upper body, the front end 11a and the rear end 11b of the rear longitudinal beam 11 need to be connected to the upper body to improve the connection stability between the two. Therefore, it is necessary to provide at least one sleeve member 12 near the front end 11a of the rear longitudinal beam 11, and at least one sleeve member 12 near the rear end 11b of the rear longitudinal beam 11.

[0069] For example, a sleeve member 12 is provided near the head end 11 a of the rear longitudinal beam 11 , and at the same time, a sleeve member 12 is provided near the tail end 11 b of the rear longitudinal beam 11 .

[0070] Of course, in other embodiments, a plurality of sleeve members 12 may be provided near the head end 11 a of the rear longitudinal beam 11 , and a plurality of sleeve members 12 may also be provided near the tail end 11 b of the rear longitudinal beam 11 .

[0071] In this way, the layout position of each sleeve member 12 on the corresponding rear longitudinal beam 11 also follows the principle of arranging at least one of the sleeve members 12 close to the head end 11a of the rear longitudinal beam 11, and at least another sleeve member 12 close to the tail end 11b of the rear longitudinal beam 11, so as to improve the stability of the connection between the front and rear ends of the rear longitudinal beam 11 and the upper body.

[0072] Please refer to Figures 1 to 3 In some embodiments, the rear floor assembly 10 includes a rear cross beam 12 , the opposite ends of which are respectively connected to the corresponding rear longitudinal beams 11 ; wherein, at least two sleeve members 12 are located at the position where the rear longitudinal beams 11 are connected to the rear cross beam 12 .

[0073] It is understood that the rear cross beam 12 and the rear longitudinal beams 11 enclose a frame structure to enhance the overall structural stability of the rear floor assembly 10. There can be multiple rear cross beams 12, and each rear cross beam 12 is disposed transversely between two rear longitudinal beams 11.

[0074] The location of the rear cross member 12 on the rear longitudinal member 11 generally corresponds to the location of the cross member of the upper vehicle body. That is, a connection point with the upper vehicle body may also be provided on the rear cross member 12. Therefore, the sleeve member 12 provided in the area where the rear longitudinal member 11 and the rear cross member 12 are connected may be connected to the cross member of the upper vehicle body to further increase the stability of the connection between the rear floor assembly 10 and the upper vehicle body.

[0075] For example, two sleeves 12 are provided in the area where the first rear cross beam 12 is connected to the rear longitudinal beam 11 and close to the head end 11a of the rear longitudinal beam 11, and the corresponding sleeves 12 are passed through the connecting piece to connect to the cross beam of the upper body.

[0076] In this way, the rear cross member 12 is connected to the rear longitudinal members 11 and encloses them to form a frame structure to improve the structural stability of the rear floor assembly 10. In addition, the setting position of the rear cross member 12 usually corresponds to the position of the cross member of the upper body. Therefore, at least two sleeve members 12 are provided at the position where the rear longitudinal members 11 and 12 are connected to further improve the connection strength between the rear longitudinal members 11 and the upper body.

[0077] Please refer to Figure 3 In some embodiments, the rear cross member 12 and the rear longitudinal member 11 are integrally formed; and / or

[0078] There are two rear cross beams 12 , and the connection between the rear cross beam 12 and the rear longitudinal beam 11 is a smooth transition.

[0079] It can be understood that the rear cross beam 12 and the rear longitudinal beam 11 can be integrated into an integrated design through an integrated hot pressing or stamping process, and the connection between the rear cross beam 12 and the rear longitudinal beam 11 is a smooth transition, which means that the connection between the rear cross beam 12 and the rear longitudinal beam 11 is formed with corresponding arc edges for transition.

[0080] In this way, the rear cross member 12 and the rear longitudinal member 11 can be integrally formed by hot pressing to improve the production efficiency of the rear floor assembly 10, as well as the dimensional accuracy of the components and the sealing stability of the connection with other vehicle body structures, thereby reducing the corresponding cost investment; furthermore, the smooth transition at the connection between the two can reduce stress concentration and improve structural strength.

[0081] Please refer to Figure 3 In some embodiments, the rear cross beam 12 close to the head end 11a has a first straight portion 12a facing the head end 11a, and each rear longitudinal beam 11 has a second straight portion 11c connected to the first straight portion 12a.

[0082] It can be understood that the first straight portion 12 a refers to a portion of the rear cross beam 12 that has a straight structure or a flat plate structure. Similarly, the second straight portion 11 c refers to a portion of the rear longitudinal beam 11 that has a straight structure or a flat plate structure.

[0083] Since the first straight portion 12a and the second straight portion 11c are connected, the connection area between the rear cross beam 12 and the two rear longitudinal beams 11 close to the head end 11a is also straight. In this way, it can be directly stamped or punched during the one-piece molding process. Compared with the traditional rear longitudinal beam 11 or rear cross beam 12 that adopts the middle stamping to form a flange structure, the straight portion design can reduce the difficulty of hot stamping and improve production and processing efficiency.

[0084] Please refer to Figure 2 and Figure 3In some embodiments, the rear longitudinal beam 11 includes a beam body 111 that is bent to form a receiving groove and a cover plate 112 that is covered on the beam body 111 and sealed at the open end of the receiving groove, and the sleeve 12 is sequentially passed through the beam body 111 and the cover plate 112.

[0085] It can be understood that the cross-sectional shape of the beam body 111 formed by bending to form the accommodating groove is U-shaped or similar to U-shaped, and the cover plate 112 is covered on the beam body 111 and blocks the open end of the accommodating groove, that is, the rear longitudinal beam 11 has a hollow beam structure.

[0086] The connection method between the beam body 111 and the cover plate 112 includes but is not limited to welding, threaded connection, riveting, etc.

[0087] Specifically, a straight plate can be bent multiple times to form a beam body 111 with a receiving groove. The beam body 111 should include a bottom end and a side end connected to the bottom end, and the cover plate 112 is covered on the side wall.

[0088] Furthermore, opposite ends of the sleeve 12 are connected to the bottom end and the cover plate 112 .

[0089] In this way, the rear longitudinal beam 11 is a hollow beam structure formed by the beam body 111 with the accommodating groove and the cover plate 112 , which is lighter in weight, has higher structural strength, and is more convenient when installing the sleeve member 12 .

[0090] Please refer to Figure 2 In some embodiments, the sleeve 12 includes a tube body 121 and a flange 122 formed at at least one end of the tube body 121 , and the flange 122 abuts against the beam body 111 or the cover plate 112 .

[0091] It can be understood that the tube body 121 is used for the connection piece to pass through, and the flange 122 is used to form corresponding connection points with the beam body 111 or the cover plate 112.

[0092] For example, the flange 122 may be formed at one end of the tube body 121 , or the flanges 122 may be provided at both opposite ends of the tube body 121 .

[0093] Specifically, the flange 122 can be formed at one end of the tube body 121, and the flange 122 is clamped on the beam body 111 or the cover plate 112, and then the flange 122 is connected to the beam body 111 or the cover plate 112 by spot welding.

[0094] By adopting the above technical solution, the flange 122 is connected to the beam body 111 or the cover plate 112 to achieve the connection between the entire sleeve 12 and the rear longitudinal beam 11 .

[0095] Please refer to Figure 2In some embodiments, the cover plate 112 is arranged on the beam body 111 at an angle.

[0096] It can be understood that the cover plate 112 is arranged at an angle, which means that in normal use, the plane where the cover plate 112 is located is inclined at an angle to the horizontal plane. Here, taking the passenger compartment of the vehicle body as a spatial reference, the cover plate 112 can be higher on the outside and lower on the inside, that is, the cover plate 112 is tilted downward toward one end of the passenger compartment, or the cover plate 112 can also be lower on the outside and higher on the inside, that is, the cover plate 112 is tilted downward away from the end of the passenger compartment.

[0097] For example, as shown in the figure, the plane where the cover plate 112 is located forms an angle a with the horizontal plane, and the angle a ranges from 2° to 10°. Optionally, the angle a ranges from 2° to 5°.

[0098] In this way, the inclined cover plate 112 can allow rainwater or accumulated water to pass through quickly, thereby reducing the probability of liquid accumulation in the inner cavity of the rear longitudinal beam 11 .

[0099] Please refer to Figure 1 and Figure 3 In some embodiments, the rear longitudinal beam 11 has an energy absorbing section 11d, a main structure section 11e, and a sealed connection section 11f that are sequentially connected along the extension direction. The rear floor assembly 10 includes a collision longitudinal beam 13, which is connected to the energy absorbing section 11d. The sealed connection section 11f is used to connect to the chemical cabin.

[0100] It can be understood that the energy-absorbing section 11d is used to connect to the collision longitudinal beam 13. The material of the energy-absorbing section 11d should be medium-thick high-strength steel to meet the energy absorption and collapse requirements during a collision. The main structural section 11e is the main part of the rear longitudinal beam 11, connecting the energy-absorbing section 11d and the sealing connection section 11f. The material of the main structural section 11e should be medium-thick hot-formed steel to provide the necessary installation positions for various components in the chassis and provide support for the bending and torsional rigidity of the entire vehicle. The sealing connection section 11f is used to connect to the chemical chamber in the middle section of the vehicle body. The material of the sealing connection section 11f should be thin-thick steel to achieve weight reduction while also meeting the corresponding sealing requirements.

[0101] In this way, the structural strength of the rear longitudinal beam 11 is differentiated and set, which is more conducive to the connection with the upper body and the anti-collision structure.

[0102] Please refer to Figure 2 and Figure 3 In some embodiments, the rear floor assembly 10 further includes a mounting cross member 14 disposed on the corresponding rear cross member 12 .

[0103] It can be understood that the mounting crossbeam 14 is a beam structure connected to the rear crossbeam 12, which is located between the rear crossbeam 12 and the upper body. Similarly, corresponding connection points are set on the mounting crossbeam 14 to achieve simultaneous connection between the rear crossbeam 12 and the mounting crossbeam 14 and the upper body.

[0104] In this way, the mounting cross member 14 is added to increase the connection points with the upper vehicle body, and at the same time, provides corresponding protection for the integrally formed rear cross member 12 and rear longitudinal member 11 .

[0105] Below, the rear floor assembly 10 provided in an embodiment of the present application will be described in detail according to specific implementation methods.

[0106] Please refer to Figures 1 to 3 The rear floor assembly 10 includes a rear longitudinal beam 11 , a rear cross beam 12 , a mounting cross beam 14 and a plurality of sleeve members 12 .

[0107] Two rear longitudinal beams 11 are spaced apart along the width of the vehicle body. Each sleeve 12 extends through the rear longitudinal beam 11 along a first direction X. Each sleeve 12 is spaced apart along the extension direction of the rear longitudinal beam 11. The sleeves 12 are used to pass connectors through and connect to the upper vehicle body. Furthermore, the spacing between adjacent sleeves 12 is set between 200 mm and 300 mm, with as many sleeves 12 as possible being provided within this spacing range.

[0108] The rear longitudinal beam 11 has a head end 11a and a tail end 11b opposite to the head end 11a. Among the sleeve members 12, one sleeve member 12 is provided near the head end 11a of the rear longitudinal beam 11, and one sleeve member 12 is also provided near the tail end 11b of the rear longitudinal beam 11.

[0109] The opposite ends of the rear cross beam 12 are connected to the corresponding rear longitudinal beams 11. At least two sleeves 12 are located at the connection between the rear longitudinal beams 11 and the rear cross beam 12. The rear cross beam 12 and the rear longitudinal beam 11 are integrally formed. There are two rear cross beams 12, and the connection between the rear cross beam 12 and the rear longitudinal beam 11 forms a smooth transition.

[0110] The rear cross member 12 close to the head end 11 a has a first straight portion 12 a facing the head end 11 a , and each rear longitudinal member 11 has a second straight portion 11 c connected to the first straight portion 12 a .

[0111] The rear longitudinal beam 11 comprises a beam body 111 bent to form a receiving groove, and a cover plate 112 that covers the beam body 111 and seals the open end of the receiving groove. The sleeve 12 is sequentially inserted through the beam body 111 and the cover plate 112. The sleeve 12 comprises a tube 121 and a flange 122 formed at at least one end of the tube 121. The flange 122 abuts against the beam body 111 or the cover plate 112. The cover plate 112 is inclined relative to the beam body 111. The plane of the cover plate 112 forms an angle a with the horizontal plane, and the angle a ranges from 2° to 5°.

[0112] The rear longitudinal beam 11 has an energy-absorbing section 11d, a main structure section 11e and a sealing connection section 11f connected in sequence along the extension direction. The rear floor assembly 10 includes a collision longitudinal beam 13, which is connected to the energy-absorbing section 11d. The sealing connection section 11f is used to connect to the chemical cabin.

[0113] The mounting cross member 14 is mounted on the side of the rear cross member 12 facing the upper vehicle body to increase the connection points between the rear floor assembly 10 and the upper vehicle body.

[0114] Second, please refer to Figure 4 and Figure 5 The embodiment of the present application also provides a vehicle body assembly 100 , including a chemical cabin 20 , a rear floor assembly 10 , a first connecting member 30 , and a second connecting member 40 .

[0115] Among them, the chemical chamber 20 is the structural part of the body assembly 100 corresponding to the vehicle passenger compartment, and is also the structural part for installing the battery device; the rear floor assembly 10 is the structural part of the body assembly 100 corresponding to the rear of the vehicle; the first connecting member 30 and the second connecting member 40 mainly play the role of connecting the chemical chamber 20 and the rear floor assembly 10. The structural forms of the first connecting member 30 and the second connecting member 40 can be the same, of course, they can also be different. For example, the first connecting member 30 and the second connecting member 40 are both screws, or screw-like structures, or the first connecting member 30 and the second connecting member 40 can also be pins or rivets, etc.

[0116] Specifically, the chemical chamber 20 includes a sill beam 21 having a top surface 21a and an inner side surface 21b connected to the top surface 21a. The sill beam 21 is the longitudinal beam portion of the chemical chamber 20 and is disposed along the length of the vehicle body assembly 100. Typically, there are two sill beams 21, spaced apart along the width of the vehicle body assembly 100. At the connection point, the sill beams 21 correspond to the rear longitudinal beam 11 of the rear floor assembly 10.

[0117] Of course, the chemical cabin 20 may further include a plurality of cross beams connected to the two door sill beams 21 .

[0118] The first connecting member 30 passes through the top surface 21a along the first direction X and is connected to the rear longitudinal beam 11 of the rear floor assembly 10;

[0119] The second connecting member 40 passes through the rear longitudinal beam 11 of the rear floor assembly 10 along the second direction Y and is connected to the inner side surface 21 b . The first direction X and the second direction Y are arranged at an angle.

[0120] It can be understood that the first direction X corresponds to the plane of the top surface 21a, i.e., the first direction X is set at an angle to the plane of the top surface 21a, and the second direction Y corresponds to the plane of the inner side surface 21b, i.e., the second direction Y is set at an angle to the plane of the inner side surface 21b. For example, in normal use, the top surface 21a of the inner side surface 21b is horizontal, and the inner side surface 21b of the inner side surface 21b is vertical. In this case, the first direction X can be perpendicular to the top surface 21a, i.e., the first direction X can be the direction in which the chemical chamber 20 is separated from the rear longitudinal beam 11, and the second direction Y can be perpendicular to the inner side surface 21b, i.e., the second direction Y can be horizontal. Of course, in actual applications, the first direction X may not be completely perpendicular to the plane of the top surface 21a, and the second direction Y may not be completely perpendicular to the plane of the inner side surface 21b. Therefore, the angle between the first direction X and the second direction Y can range from approximately 45 degrees to 135 degrees.

[0121] Please refer to Figure 5 During assembly and disassembly, the rear longitudinal member 11 includes a first main member portion 11g and a first extension portion 11h connected to the main member portion 11g. The first main member portion 11g abuts the inner side surface 21b, and the first extension portion 11h abuts the top end surface 21a. The first extension portion 11h of the rear longitudinal member 11 should abut the top end surface 21a of the sill beam 21, and the first main member portion 11g should abut or be positioned close to the inner side surface 21b of the sill beam 21. A first connector 30 extends along the first direction X and connects the first extension portion 11h to the top end surface 21a of the sill beam 21. A second connector 40 extends along the second direction Y and connects the first main member portion 11g to the inner side surface 21b of the sill beam 21. This ensures that the sill beam 21 is connected to the rear longitudinal member 11 in two directions, enhancing connection stability and strength. At the same time, after the first connecting member 30 and the second connecting member 40 are removed, the chemical cabin 20 is separated from the rear floor assembly 10 to meet the needs of separate maintenance.

[0122] The vehicle body assembly 100 provided by the present invention connects the chemical cabin 20 and the rear floor assembly 10 by arranging connectors from two directions, which not only satisfies the requirement of detachability but also improves the problem of poor stability of the connection between the two.

[0123] Please refer to Figure 5 In some embodiments, the sill beam 21 includes a second beam main body portion 211 and a second beam extension portion 212 provided on the second beam main body portion 211. The connection between the second beam extension portion 212 and the second beam main body portion 211 forms a step structure. The first beam main body portion 11g is placed at the step structure. The second beam extension portion 212 has an inner side surface 21b and a top end surface 21a.

[0124] It can be understood that the second beam main body 211 is the main part of the door sill beam 21, and the space enclosed by the second beam main body 211 is used for placing the battery device. The second beam extension 212 is distinguished from the second beam main body 211, and is protruded outwardly from the extension of the second beam main body 211. The second beam extension 212 mainly serves to connect with the rear longitudinal beam 11, that is, the second beam extension 212 has an inner side surface 21b that is adapted to connect with the first beam extension 11h and a top end surface 21a that is adapted to connect with the first beam main body 11g.

[0125] The step structure formed at the connection between the second beam extension 212 and the second beam main body 211 means that in the second direction Y, the width of the second beam extension 212 is smaller than the width of the second beam main body 211, thereby forming a step-like structure. This also satisfies the requirement of utilizing the space formed by the step structure to accommodate the first beam main body 11g, thereby reducing the degree of overlap between the first beam main body 11g and the second beam main body 211 in the second direction Y, thereby reducing the size restriction of the battery device in the second direction Y, that is, reserving more accommodation space in the width direction of the vehicle body assembly 100 for accommodating the battery device.

[0126] In other embodiments, since the first beam main body portion 11g of the rear longitudinal beam 11 is mainly housed in the step structure, the degree of interference of the first beam main body portion 11g on the second beam main body portion 211 in the second direction Y is smaller. At the same time, in the third direction Z (the third direction Z is perpendicular to both the first direction X and the second direction Y, and the third direction Z is the same as the length direction of the vehicle body assembly 100, and is also the extension direction of the door sill beam 21), the rear longitudinal beam 11 also affects the overall space of the chemical cabin 20. Therefore, the battery device also has a larger installation space in the second direction, and thus a battery device with larger capacity and size can be installed.

[0127] Thirdly, please refer to Figure 6 , an embodiment of the present application also provides a vehicle 1000 , including the above-mentioned body assembly 100 .

[0128] The vehicle 1000 to which the technical solution described in the embodiment of the present application is applicable includes a fuel vehicle, a gas vehicle or a new energy vehicle, wherein the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc.

[0129] The vehicle 1000 provided by the present invention has the above-mentioned body assembly 100 , and the rear floor assembly 10 and the chemical cabin 20 are easier to assemble and disassemble, so that the chemical cabin 20 can be maintained separately.

[0130] Of course, the vehicle 1000 provided in this application also includes wheels 200 connected to the body assembly 100, a battery device 300 and a motor 400 arranged on the body assembly 100, the battery device 300 is used to supply power to the motor 400, and the motor 400 is used to drive the wheels 200 to rotate.

[0131] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A rear floor assembly, characterized in that: include: at least two rear longitudinal members; The rear longitudinal beams are spaced apart from each other, and multiple casing pieces; Each of the sleeve members is passed through along a first direction and connected to the rear longitudinal beam, and each of the sleeve members is spaced apart along the extending direction of the rear longitudinal beam. The sleeve members are used for the connecting member to pass through and be connected to the upper body.

2. The rear floor assembly according to claim 1, characterized in that: The rear longitudinal beam has a head end and a tail end opposite to the head end; at least one of the sleeve members is disposed near the head end; and at least another sleeve member is disposed near the tail end.

3. The rear floor assembly according to claim 2, characterized in that: The rear floor assembly includes a rear cross beam, and opposite ends of the rear cross beam are respectively connected to the corresponding rear longitudinal beams; wherein at least two sleeve members are located at the position where the rear longitudinal beams are connected to the rear cross beam.

4. The rear floor assembly according to claim 3, characterized in that: The rear cross beam and the rear longitudinal beam are integrally formed; and / or, There are two rear cross beams, and the connection between the rear cross beam and the rear longitudinal beam is a smooth transition.

5. The rear floor assembly according to claim 4, characterized in that: The rear cross beam close to the head end has a first straight portion facing the head end, and each of the rear longitudinal beams has a second straight portion connected to the first straight portion.

6. The rear floor assembly according to any one of claims 1 to 5, characterized in that: The rear longitudinal beam includes a beam body bent to form a receiving groove and a cover plate covered on the beam body and sealed at the open end of the receiving groove. The sleeve member is sequentially passed through the beam body and the cover plate.

7. The rear floor assembly according to claim 6, characterized in that: The sleeve member includes a tube body and a flange formed at at least one end of the tube body, wherein the flange abuts against the beam body or the cover plate.

8. The rear floor assembly according to claim 6, characterized in that: The cover plate is arranged on the beam body in an inclined manner.

9. The rear floor assembly according to any one of claims 1 to 5, characterized in that: The rear longitudinal beam has an energy absorbing section, a main structure section and a sealing connection section which are sequentially connected along the extension direction. The rear floor assembly includes a collision longitudinal beam which is connected to the energy absorbing section. The sealing connection section is used to connect to the chemical cabin.

10. The rear floor assembly according to any one of claims 3 to 5, characterized in that: The rear floor assembly further includes a mounting crossbeam provided on the corresponding rear crossbeam, wherein the mounting crossbeam is located on a side of the rear crossbeam facing the upper vehicle body.

11. A vehicle body assembly, characterized in that: include: A chemical cabin, the chemical cabin comprising a threshold beam, the threshold beam having a top surface and an inner side surface connected to the top surface; The rear floor assembly according to any one of claims 1 to 10; a first connecting member, the first connecting member passing through the top surface along a first direction and connected to a rear longitudinal beam of the rear floor assembly; The second connecting member is passed through the rear longitudinal beam of the rear floor assembly along a second direction and is connected to the inner side surface. The first direction and the second direction are arranged at an angle.

12. A vehicle, characterized in that: Comprising the vehicle body assembly as claimed in claim 11.

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