Vehicle body rear longitudinal beam assembly and vehicle

Abstract

The utility model relates to the technical field of vehicle body structures, and discloses a vehicle body rear longitudinal beam assembly and a vehicle. The vehicle body rear longitudinal beam assembly comprises a first rear longitudinal beam section and a second rear longitudinal beam section, and the first end of the first rear longitudinal beam section is connected with a vehicle body rear floor assembly; the first end part of the second rear longitudinal beam section is connected with a rear anti-collision beam, the second end part of the second rear longitudinal beam section is overlapped with the second end part of the first rear longitudinal beam section, the overlapping length of the second end part of the second rear longitudinal beam section and the second end part of the first rear longitudinal beam section in the axial direction of the first rear longitudinal beam section is adjustable, and the second end part of the second rear longitudinal beam section and the first rear longitudinal beam section are connected under different overlapping lengths; the utility model provides a vehicle body rear longitudinal beam assembly and a vehicle. The problem that the development period of the vehicle body rear longitudinal beam assembly is long can be solved or improved.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle body structures, and in particular to a vehicle body rear longitudinal beam assembly and a vehicle. Background Art

[0002] Consumers' demands and preferences for cars will change over time, such as changes in aesthetic trends in car appearance and increased requirements for interior space. This requires car manufacturers to launch new models that meet consumer needs in a short period of time in order to maintain continued competitiveness.

[0003] When adjusting the appearance and interior space of a car, it is inevitable to make corresponding adjustments to the rear longitudinal beam of the vehicle body. However, the change in the length of the rear longitudinal beam of the vehicle body requires redevelopment, optimization of the design model of the rear longitudinal beam of the vehicle body, and re-manufacturing of production molds and other related equipment. This will greatly increase the development cycle of the entire vehicle, affect the development progress of the entire vehicle, and fail to meet the timely needs of the market. Utility Model Content

[0004] In view of this, the present application provides a vehicle body rear longitudinal beam assembly and a vehicle to solve or improve the problem of long development cycle of the vehicle body rear longitudinal beam assembly.

[0005] On the one hand, the present application provides a vehicle body rear longitudinal beam assembly, including a first rear longitudinal beam section and a second rear longitudinal beam section, wherein the first end of the first rear longitudinal beam section is connected to the vehicle body rear floor assembly; the first end of the second rear longitudinal beam section is connected to the rear anti-collision beam, wherein the second end of the second rear longitudinal beam section overlaps with the second end of the first rear longitudinal beam section, and the overlapping length of the two along the axial direction of the first rear longitudinal beam section is adjustable, and they remain connected at different overlapping lengths.

[0006] The vehicle body rear longitudinal beam assembly includes a first rear longitudinal beam section and a second rear longitudinal beam section, and the first rear longitudinal beam section and the second rear longitudinal beam section are overlapped along the axial direction of the first rear longitudinal beam section and can be fixedly connected in different overlapping states, thereby realizing the length adjustment of the vehicle body rear longitudinal beam assembly. Therefore, there is no need to optimize the design model of the vehicle body rear longitudinal beam and re-manufacture production molds and other related equipment, thereby shortening the development cycle of the whole vehicle, accelerating the development progress of the whole vehicle, and thus meeting the timely needs of the market.

[0007] In an optional embodiment, one of the first rear longitudinal beam segment and the second rear longitudinal beam segment is provided with a plurality of first connecting portions, and the other is provided with at least one second connecting portion; wherein the plurality of first connecting portions are distributed at intervals along the axial direction of the first rear longitudinal beam segment, and one first connecting portion is connected to one second connecting portion to form a connecting pair, and there is at least one connecting pair.

[0008] In an optional embodiment, the first connecting portion includes a plurality of first connecting holes, which are arranged at intervals along the circumference of the first rear longitudinal beam segment; the second connecting portion includes a plurality of second connecting holes, which are arranged at intervals along the circumference of the second rear longitudinal beam segment, and the plurality of first connecting holes in one first connecting portion correspond one-to-one to the plurality of second connecting holes in one second connecting portion, and are connected by fasteners.

[0009] In an optional embodiment, the second end portion of the second rear longitudinal beam segment is inserted into the second end portion of the first rear longitudinal beam segment.

[0010] In an optional embodiment, a side wall opening for demoulding is provided on the side wall surface of the first rear longitudinal beam segment.

[0011] In an optional embodiment, a connecting plate is further included, which is connected to the first rear longitudinal beam section, and the connecting plate at least partially covers the side wall opening. The second rear longitudinal beam section is connected to the connecting plate at a portion corresponding to the side wall opening.

[0012] In an optional embodiment, the vehicle body further includes a rear floor assembly, and the first rear longitudinal beam section is integrally formed with the vehicle body rear floor assembly.

[0013] In an optional embodiment, a bumper bracket is further included, and a flange is provided at one end of the second rear longitudinal beam section away from the first rear longitudinal beam section, and the flange is suitable for connecting to the rear anti-collision beam, and the bumper bracket includes a first bent portion and a second bent portion connected to each other, the end of the first bent portion away from the second bent portion is connected to a portion of the second rear longitudinal beam section away from the flange, the portion of the second bent portion close to the first bent portion is connected to an edge portion of the flange, and the end of the second bent portion away from the first bent portion is suitable for connecting to the bumper.

[0014] In an optional embodiment, the number of the connection pairs is not less than two; and / or the number of the first connection parts is 3 to 6; and / or the number of the second connection parts is 3 to 6.

[0015] On the other hand, the present application also provides a vehicle, comprising a vehicle body, a rear anti-collision beam and a vehicle body rear longitudinal beam assembly in any one of the above-mentioned embodiments, wherein two vehicle body rear longitudinal beam assemblies are provided and are spaced apart along the width direction of the vehicle body, the first rear longitudinal beam section is connected to the vehicle body, and the rear anti-collision beam is connected to the rear section of the rear total longitudinal beam.

[0016] Beneficial effects: Since the vehicle includes the vehicle body rear longitudinal beam assembly, it has the same effects as the vehicle body rear longitudinal beam assembly and will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific implementation methods of this application or the technical solutions in related technologies, the following is a brief introduction to the drawings required for use in the specific implementation methods or related technical descriptions. Obviously, the drawings described below are some implementation methods of this application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0018] Figure 1 This is a schematic structural diagram of a vehicle body rear longitudinal beam assembly installed on a vehicle body according to an embodiment of the present application;

[0019] Figure 2 This is a schematic structural diagram of a vehicle body rear longitudinal beam assembly according to an embodiment of the present application;

[0020] Figure 3 This is an exploded view of the longitudinal beam assembly of a vehicle body according to an embodiment of the present application from the orthoaxial side;

[0021] Figure 4 This is an exploded view of the reverse-axle side of a vehicle body rear longitudinal beam assembly according to an embodiment of the present application;

[0022] Figure 5 This is a reverse-axis side view of a vehicle body rear longitudinal beam assembly according to an embodiment of the present application;

[0023] Figure 6 This is an axonometric view of a front section of a vehicle body rear longitudinal beam assembly and a vehicle body rear floor assembly according to an embodiment of the present application;

[0024] Figure 7 This is a transverse axle view of a vehicle body rear longitudinal beam assembly from another perspective according to an embodiment of the present application;

[0025] Figure 8 This is a schematic structural diagram of a bumper bracket in a vehicle body rear longitudinal beam assembly according to an embodiment of the present application.

[0026] Description of reference numerals:

[0027] 1. First rear longitudinal beam section; 2. Second rear longitudinal beam section; 3. Connecting plate; 4. Rear floor assembly; 5. Bumper bracket; 6. Rear anti-collision beam; 7. Rear trailer hook mounting area; 8. Vehicle body;

[0028] 11. First connection portion; 12. Side wall opening; 21. Second connection portion; 22. Flange; 23. Fourth connection portion; 31. Third connection portion; 51. First bending portion; 52. Second bending portion;

[0029] 111. First connecting hole; 211. Second connecting hole. DETAILED DESCRIPTION

[0030] To make the purpose, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of this application.

[0031] In related technologies, when adjusting the appearance and interior space of a car, it is inevitable to make corresponding adjustments to the rear longitudinal beam of the car body. However, the change in the length of the rear longitudinal beam of the car body requires redevelopment, optimization of the design model of the rear longitudinal beam of the car body, and re-manufacturing of production molds and other related equipment. This will greatly increase the development cycle of the entire vehicle, affect the development progress of the entire vehicle, and fail to meet the timely needs of the market.

[0032] Therefore, the present application provides a vehicle body rear longitudinal beam assembly and a vehicle to solve or improve the problem of long development cycle of the vehicle body rear longitudinal beam assembly.

[0033] The following combination Figures 1 to 8 , describing the embodiments of the present application.

[0034] According to an embodiment of the present application, on the one hand, a vehicle body rear longitudinal beam assembly is provided, such as Figures 1 to 2 As shown, it includes a first rear longitudinal beam section 1 and a second rear longitudinal beam section 2, the first end of the first rear longitudinal beam section 1 is connected to the vehicle body rear floor assembly 4 by welding or bolting; the first end of the second rear longitudinal beam section 2 is connected to the rear anti-collision beam 6 by welding or bolting, wherein the second end of the second rear longitudinal beam section 2 overlaps with the second end of the first rear longitudinal beam section 1, and the overlapping length of the two along the axial direction of the first rear longitudinal beam section 1 is adjustable, and they remain connected at different overlapping lengths.

[0035] It should be noted that "the second end portion of the second rear longitudinal beam segment 2 overlaps with the second end portion of the first rear longitudinal beam segment 1", which means that along the axial direction of the first rear longitudinal beam segment 1, the first end portion of the first rear longitudinal beam segment 1 and the second end portion of the second rear longitudinal beam segment 2 have an overlapping area. As for the length and width of the overlapping area, they can be selected and set according to actual needs.

[0036] "The overlapping length of the two along the axial direction of the first rear longitudinal beam segment 1 is adjustable, and they remain connected at different overlapping lengths", such as Figures 3 and 4As shown, the relative position of the second rear longitudinal beam section 2 and the first rear longitudinal beam section 1 along the axial direction of the first rear longitudinal beam section 1 can be adjusted first, and then the overlapping area of ​​the second end portion of the second rear longitudinal beam section 2 and the second end portion of the first rear longitudinal beam section 1 can be connected by welding or bolting to achieve adjustment of the length of the vehicle body rear longitudinal beam assembly; specifically, the second rear longitudinal beam section 2 is moved a distance in the direction closer to the first rear longitudinal beam section 1 and then connected; alternatively, the second rear longitudinal beam section 2 is moved a distance in the direction away from the first rear longitudinal beam section 1 and then connected.

[0037] In this embodiment, if Figures 1 to 4 As shown, the vehicle body rear longitudinal beam assembly includes a first rear longitudinal beam section 1 and a second rear longitudinal beam section 2, and the first rear longitudinal beam section 1 and the second rear longitudinal beam section 2 are overlapped along the axial direction of the first rear longitudinal beam section 1, and can be fixedly connected in different overlapping states, thereby realizing the length adjustment of the vehicle body rear longitudinal beam assembly. Therefore, there is no need to optimize the design model of the vehicle body rear longitudinal beam and re-manufacture production molds and other related equipment, thereby shortening the development cycle of the whole vehicle, accelerating the development progress of the whole vehicle, and thus meeting the timely needs of the market.

[0038] In one embodiment, Figures 3 and 4 As shown, one of the first rear longitudinal beam segment 1 and the second rear longitudinal beam segment 2 is provided with a plurality of first connecting portions 11, and the other is provided with at least one second connecting portion 21; wherein, the plurality of first connecting portions 11 are distributed at intervals along the axial direction of the first rear longitudinal beam segment 1, and one first connecting portion 11 is connected to one second connecting portion 21 to form a connecting pair, and there is at least one connecting pair, preferably, there are not less than two connecting pairs; and / or, the number of the first connecting portions 11 is 3 to 6; and / or, the number of the second connecting portions 21 is 3 to 6.

[0039] It should be noted that the first connection part 11 and the second connection part 21 can be any matching structure that can achieve connection; for example, the first connection part 11 and the second connection part 21 are specifically holes connected by bolts; for example, the first connection part 11 and the second connection part 21 can be platform surfaces required for welding, or planes required for bonding, such as frosted surfaces.

[0040] Specifically, multiple first connecting parts 11 can be arranged at intervals on the first rear longitudinal beam segment 1, and the second connecting part 21 is arranged on the second rear longitudinal beam segment 2. Of course, the number of second connecting parts 21 can also be multiple, and multiple second connecting parts 21 are arranged at intervals on the second rear longitudinal beam segment 2 along the axial direction of the first rear longitudinal beam segment 1.

[0041] It is also possible to arrange multiple first connection parts 11 at intervals on the second rear longitudinal beam segment 2, and the second connection part 21 is arranged on the first rear longitudinal beam segment 1. Of course, the number of second connection parts 21 can also be multiple, and multiple second connection parts 21 are arranged on the second rear longitudinal beam segment 2 at intervals along the axial direction of the second rear longitudinal beam segment 2.

[0042] In this embodiment, if Figures 3 and 4 As shown, a plurality of first connecting portions 11 are provided at intervals on the first rear longitudinal beam segment 1, and a plurality of second connecting portions 21 are provided at intervals along the axial direction of the first rear longitudinal beam segment 1 on the second rear longitudinal beam segment 2. One first connecting portion 11 is connected to one second connecting portion 21 to form a connecting portion, and the number of connecting portions is at least one, thereby achieving fixed connection after the relative positions of the first rear longitudinal beam segment 1 and the second rear longitudinal beam segment 2 are adjusted. The solution is simple and easy to implement.

[0043] In a specific embodiment, Figures 3 and 4 As shown, the first connection portion 11 includes a plurality of first connection holes 111, which are arranged at intervals along the circumference of the first rear longitudinal beam segment 1; the second connection portion 21 includes a plurality of second connection holes 211, which are arranged at intervals along the circumference of the second rear longitudinal beam segment 2. The plurality of first connection holes 111 in a first connection portion 11 corresponds one-to-one to the plurality of second connection holes 211 in a second connection portion 21, and are connected by fasteners.

[0044] It should be noted that, although multiple first connecting holes 111 are arranged at intervals along the circumference of the first rear longitudinal beam segment 1, the first connecting holes 111 are not necessarily arranged on the first rear longitudinal beam segment 1. The first connecting holes 111 can be arranged on the first rear longitudinal beam segment 1 or on the second rear longitudinal beam segment 2; similarly, although multiple second connecting holes 211 are arranged at intervals along the circumference of the second rear longitudinal beam segment 2, the second connecting holes 211 are not necessarily arranged on the second rear longitudinal beam segment 2. The second connecting holes 211 can be arranged on the second rear longitudinal beam segment 2 or on the first rear longitudinal beam segment 1. Of course, the first connecting holes 111 and the second connecting holes 211 cannot be located on the first rear longitudinal beam segment 1 or on the second rear longitudinal beam connecting segment at the same time.

[0045] Specifically, the fastener can be any one of a rivet, a bolt and a bolt nut, and the rivet can be specifically a rivet, etc.; if the fastener is a rivet or a bolt nut, the first connecting hole 111 and the second connecting hole 211 can be through holes; if the fastener is a bolt, the hole in the first connecting hole 111 and the second connecting hole 211 close to the nut of the bolt is a threaded hole.

[0046] It should be noted that if Figures 3 and 4As shown, the centers of the multiple first connection holes 111 in the first connection part 11 are not necessarily in the same plane. A part of them may be in one plane and the other part in another plane, that is, the multiple first connection holes 111 are bent in the circumferential direction of the first rear longitudinal beam section 1; the centers of the multiple second connection holes 211 in the second connection part 21 are not necessarily in the same plane. A part of them may be in one plane and the other part in another plane, that is, the multiple second connection holes 211 are bent in the circumferential direction of the second rear longitudinal beam section 2.

[0047] In the specific implementation process, the first connecting portion 11 is provided on the first rear longitudinal beam segment 1, and the second connecting portion 21 is provided on the second rear longitudinal beam segment 2 as an example; specifically, there are four first connecting portions 11, specifically A1, B1, C1 and D1, and the first connecting holes 111 in A1, B1, C1 and D1 are all through holes; four second connecting portions 21 are provided on the second rear longitudinal beam segment 2, specifically A2, B2, C2 and D2; the second connecting portions in A2, B2, C2 and D2 are The holes 211 are all threaded holes. Any one of A1, B1, C1 and D1 can be connected to any one of A2, B2, C2 and D2, and three length adjustments can be achieved. For example, when A2 is connected to A1 and D2 is connected to D1, the rear longitudinal beam assembly of the vehicle body is in the shortest state; when A2 is connected to B1 and C2 is connected to D1, the rear longitudinal beam assembly of the vehicle body is in another length state; and when A2 is connected to C1 and B2 is connected to D1, the rear longitudinal beam assembly of the vehicle body is in the longest state.

[0048] In this embodiment, if Figures 3 and 4 As shown, the first connection portion 11 includes a plurality of first connection holes 111, and the plurality of first connection holes 111 are arranged at circumferential intervals on the first rear longitudinal beam segment 1, and the second connection portion 21 includes a plurality of second connection holes 211, and the plurality of second connection holes 211 are arranged at circumferential intervals on the second rear longitudinal beam segment 2. By connecting the plurality of first connection holes 111 in the first connection portion 11 with the plurality of second connection holes 211 in the second connection portion 21 in a one-to-one correspondence, the connection strength between the first rear longitudinal beam segment 1 and the second rear longitudinal beam segment 2 can be enhanced; and the first connection portion 11 and the second connection portion 21 are connected by fasteners. After the vehicle is rear-ended, only the second rear longitudinal beam segment 2, the rear anti-collision beam 6 and the rear bumper need to be removed and replaced, which can reduce maintenance costs and improve maintenance efficiency.

[0049] In one embodiment, Figure 5As shown, the second end portion of the second rear longitudinal beam section 2 is inserted into the second end portion of the first rear longitudinal beam section 1. Specifically, the outer surface of the second end portion of the second rear longitudinal beam section 2 inserted into the first rear longitudinal beam section 1 is in sliding contact with the inner surface of the second end portion of the first rear longitudinal beam section 1. In this embodiment, by inserting the second rear longitudinal beam section 2 into the first rear longitudinal beam section 1, not only the integrity of the second rear longitudinal beam section 2 and the first rear longitudinal beam section 1 is strengthened, the deformation resistance of the vehicle body rear longitudinal beam assembly is improved, and the structural setting is simple, which is convenient for connection.

[0050] In some embodiments not shown, one side surface of the second rear longitudinal beam segment 2 is overlapped and connected with one side surface of the first rear longitudinal beam segment 1. Although this method can also achieve length adjustment of the rear longitudinal beam assembly, the overall deformation resistance of the rear longitudinal beam assembly is poor.

[0051] In a specific embodiment, Figure 4 As shown, a side wall opening 12 for demoulding is provided on the side wall surface of the first rear longitudinal beam section 1, which is used for demoulding structures such as reinforcement ribs located in the first rear longitudinal beam section 1; preferably, the side wall opening 12 faces one side in the width direction of the vehicle body.

[0052] In this embodiment, by providing a side wall opening 12 on one side of the first rear longitudinal beam segment 1 , it is possible to facilitate the production of the first rear longitudinal beam segment 1 through a casting process, and to facilitate demoulding and the like.

[0053] In one embodiment, Figure 4 As shown, the vehicle body rear longitudinal beam assembly also includes a connecting plate 3, which is connected to the first rear longitudinal beam segment 1 by welding or bolting. The connecting plate 3 at least partially covers the side wall opening 12, and the portion of the second rear longitudinal beam segment 2 corresponding to the side wall opening 12 is connected to the connecting plate 3 by bolting.

[0054] It should be noted that the area of ​​the connecting plate 3 can be adaptively adjusted according to the specific layout of the connection points between the connecting plate 3 and the second rear longitudinal beam section 2, and is also affected by the thickness of the connecting plate 3. For example, if the thickness of the connecting plate 3 is relatively large, its area can be set relatively small, and fewer connection points can be arranged; for example, if the thickness of the connecting plate 3 is relatively small, its area can be set relatively large, and more connection points can be arranged.

[0055] Specifically, such as Figure 4 As shown, a plurality of third connection portions 31 are provided on the connecting plate 3 at axial intervals along the first rear longitudinal beam segment 1. Of course, at least one fourth connection portion 23 is provided on the second rear longitudinal beam segment 2, and the fourth connection portion 23 can be connected to any third connection portion 31. As for the specific structures of the third connection portion 31 and the fourth connection portion 23, reference can be made to the first connection portion 11 and the second connection portion 21.

[0056] In this embodiment, by providing the connecting plate 3 , the connection strength between the first rear longitudinal beam segment 1 and the second rear longitudinal beam segment 2 can be enhanced, thereby enhancing the deformation resistance of the rear longitudinal beam.

[0057] In one embodiment, Figure 6 As shown, the vehicle body rear longitudinal beam assembly also includes a vehicle body rear floor assembly 4, and the first rear longitudinal beam section 1 is integrally formed with the vehicle body rear floor assembly 4; specifically, the first rear longitudinal beam section 1 and the vehicle body rear floor assembly 4 are integrally cast aluminum parts; more specifically, two first rear longitudinal beam sections 1 and two second rear longitudinal beam sections 2 are respectively provided and correspondingly connected, and the two first rear longitudinal beam sections 1 are spaced apart along the width direction of the vehicle body and are integrally formed with the vehicle body rear floor assembly 4.

[0058] In this embodiment, by integrally forming the two first rear longitudinal beam sections 1 and the vehicle body rear floor assembly 4 , the deformation resistance of the entire vehicle can be improved, the number of parts of the entire vehicle can be reduced, and the assembly process of the vehicle body can be reduced.

[0059] In one embodiment, Figure 7 As shown, the rear longitudinal beam assembly of the vehicle body further includes a bumper bracket 5, and a flange 22 is provided at one end of the second rear longitudinal beam section 2 away from the first rear longitudinal beam section 1. The flange 22 is suitable for being connected to the rear anti-collision beam 6 by bolts, as shown in FIG. Figure 8 As shown, the bumper bracket 5 includes a first bent portion 51 and a second bent portion 52 connected to each other. Specifically, the first bent portion 51 and the second bent portion 52 are an integrated structure formed by sheet metal processing such as stamping and bending; the end of the first bent portion 51 away from the second bent portion 52 is connected to the portion of the second rear longitudinal beam section 2 away from the flange 22 by welding, and the portion of the second bent portion 52 close to the first bent portion 51 is connected to the edge of the flange 22 by welding, and the end of the second bent portion 52 away from the first bent portion 51 is suitable for being connected to the bumper by a snap-fit ​​connection or a bolt-thread connection.

[0060] In this embodiment, a triangular reinforcement structure is formed between the second rear longitudinal beam section 2 and the edge of the flange 22 by the first bent portion 51 of the bumper bracket 5, which can enhance the deformation resistance of the flange 22, thereby preventing the rear anti-collision beam 6 from exerting excessive force on the flange 22 due to excessive force on the rear trailer hook mounting portion 7 on the rear anti-collision beam 6 during the process of the vehicle towing other vehicles, thereby causing the flange 22 to deform and the rear anti-collision beam 6 to deform.

[0061] According to an embodiment of the present application, on the other hand, a vehicle is provided, such as Figure 1As shown, it includes a vehicle body 8, a rear anti-collision beam 6 and a vehicle body rear longitudinal beam assembly in any of the above-mentioned embodiments. There are two vehicle body rear longitudinal beam assemblies, which are spaced apart along the width direction of the vehicle body 8. The first rear longitudinal beam section 1 is connected to the vehicle body 8 through the vehicle body rear floor assembly 4, and the rear anti-collision beam 6 is connected to the rear section of the rear total longitudinal beam.

[0062] Specifically, the vehicles include sedans, SUVs and other vehicles, and are not limited to fuel vehicles, but also include new energy vehicles.

[0063] In this embodiment, since the vehicle includes a vehicle body rear longitudinal beam assembly, it has the same effect as the vehicle body rear longitudinal beam assembly and is not described in detail here.

[0064] Although the embodiments of the present application have been described with reference to the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present application, and such modifications and variations shall fall within the scope defined by the appended claims.

Claims

1. A vehicle body rear longitudinal beam assembly, characterized in that: include: A first rear longitudinal beam section (1), wherein a first end portion of the first rear longitudinal beam section (1) is connected to a vehicle body rear floor assembly (4); A second rear longitudinal beam section (2), wherein the first end of the second rear longitudinal beam section (2) is connected to the rear anti-collision beam (6), wherein the second end of the second rear longitudinal beam section (2) overlaps with the second end of the first rear longitudinal beam section (1), and the overlapping length of the two along the axial direction of the first rear longitudinal beam section (1) is adjustable, and the two are connected in different overlapping states.

2. The vehicle body rear longitudinal beam assembly according to claim 1, characterized in that: One of the first rear longitudinal beam section (1) and the second rear longitudinal beam section (2) is provided with a plurality of first connecting portions (11), and the other is provided with at least one second connecting portion (21); Wherein, a plurality of first connecting portions (11) are distributed at intervals along the axial direction of the first rear longitudinal beam section (1), and one of the first connecting portions (11) is connected to one of the second connecting portions (21) to form a connecting pair, and there is at least one connecting pair.

3. The vehicle body rear longitudinal beam assembly according to claim 2, characterized in that: The first connecting portion (11) comprises a plurality of first connecting holes (111), and the plurality of first connecting holes (111) are arranged at intervals along the circumference of the first rear longitudinal beam section (1); The second connecting portion (21) includes a plurality of second connecting holes (211), and the plurality of second connecting holes (211) are arranged at intervals along the circumference of the second rear longitudinal beam section (2). The plurality of first connecting holes (111) in one first connecting portion (11) corresponds one-to-one to the plurality of second connecting holes (211) in one second connecting portion (21), and are connected by fasteners.

4. The vehicle body rear longitudinal beam assembly according to any one of claims 1 to 3, characterized in that: The second end portion of the second rear longitudinal beam section (2) is inserted into the second end portion of the first rear longitudinal beam section (1).

5. The vehicle body rear longitudinal beam assembly according to claim 4, characterized in that: A side wall opening (12) for demoulding is provided on the side wall surface of the first rear longitudinal beam section (1).

6. The vehicle body rear longitudinal beam assembly according to claim 5, characterized in that: The invention also includes a connecting plate (3), the connecting plate (3) being connected to the first rear longitudinal beam section (1), the connecting plate (3) at least partially covering the side wall opening (12), and the portion of the second rear longitudinal beam section (2) corresponding to the side wall opening (12) being connected to the connecting plate (3).

7. The vehicle body rear longitudinal beam assembly according to any one of claims 1 to 3, characterized in that: It also includes a vehicle body rear floor assembly (4), wherein the first rear longitudinal beam section (1) and the vehicle body rear floor assembly (4) are integrally formed.

8. The vehicle body rear longitudinal beam assembly according to any one of claims 1 to 3, characterized in that: The invention also includes a bumper bracket (5), wherein a flange (22) is provided at one end of the second rear longitudinal beam section (2) away from the first rear longitudinal beam section (1), and the flange (22) is suitable for connecting with the rear anti-collision beam (6); the bumper bracket (5) includes a first bent portion (51) and a second bent portion (52) connected to each other, wherein the end of the first bent portion (51) away from the second bent portion (52) is connected to a portion of the second rear longitudinal beam section (2) away from the flange (22), and the portion of the second bent portion (52) close to the first bent portion (51) is connected to an edge portion of the flange (22), and the end of the second bent portion (52) away from the first bent portion (51) is suitable for connecting with the bumper.

9. The vehicle body rear longitudinal beam assembly according to claim 2 or 3, characterized in that: There are no less than two connecting pairs; and / or, the number of the first connecting parts (11) is 3 to 6; And / or, the number of the second connecting parts (21) is 3 to 6.

10. A vehicle, characterized in that: include: Vehicle body (8); rear anti-collision beam (6); The vehicle body rear longitudinal beam assembly according to any one of claims 1 to 9, wherein two vehicle body rear longitudinal beam assemblies are provided and are spaced apart along the width direction of the vehicle body (8), the first rear longitudinal beam section (1) is connected to the vehicle body (8), and the rear anti-collision beam (6) is connected to the second rear longitudinal beam section (2).

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