Rear longitudinal beam assembly, automobile rear structure and automobile

Abstract

The invention discloses a rear longitudinal beam assembly, an automobile rear structure and an automobile, and belongs to the technical field of automobile manufacturing, the rear longitudinal beam assembly comprises a rear longitudinal beam body, a lap joint edge is arranged on the side wall of the rear longitudinal beam body, the lap joint edge extends in the length direction of the rear longitudinal beam body, the lap joint edge is located in the middle of the rear longitudinal beam body in the height direction, and the lap joint edge is located in the middle of the rear longitudinal beam body. A boundary area is formed on the side wall of the rear longitudinal beam body from the top to the lap joint edge, and the boundary area serves as the boundary of the storage space in the vehicle width direction. The automobile rear structure comprises a rear floor panel assembly and two rear longitudinal beam assemblies, wherein the rear floor panel assembly is lapped on the lapped edge of the two rear longitudinal beam assemblies and is fixedly connected with the lapped edge of the two rear longitudinal beam assemblies. The automobile adopts the automobile rear structure. The overlapping edge is arranged on the side wall of the rear longitudinal beam, the top wall originally serving as the overlapping area is changed into the side wall area, the edge of the rear floor panel does not need to be drawn, the side wall of the rear longitudinal beam can serve as the boundary of the storage space in the vehicle width direction, and it can be guaranteed that the width of the storage space is maximized.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile manufacturing, and particularly to a rear longitudinal beam assembly, an automobile rear structure and an automobile. Background Art

[0002] With the development of the times, people's demand for the rear space of automobiles has gradually increased, and it is required to have a larger space under the condition of the same-level body. However, the existing rear longitudinal beam and rear floor structures known to the inventor sacrifice a large amount of storage space for stacking performance. For example, Figure 19 As shown in the schematic diagram of the connection structure of the traditional rear longitudinal beam and the traditional rear floor, the edge of the traditional rear floor 7 is mainly lapped and fixed on the top wall of the traditional rear longitudinal beam 8. Since the rear floor is usually thin, in order to ensure the structural strength, it is necessary to extend the vertical line part of the edge of the traditional rear floor 7 outward, and make the angle of the outward extension of the vertical line part as large as possible. The larger the extension angle, the smaller the storage space formed by the traditional rear floor 7 in the vehicle width direction, and it is difficult to meet people's requirements for the storage space. Summary of the Invention

[0003] The purpose of the present invention is to solve the above technical problems, and provide a rear longitudinal beam assembly, an automobile rear structure and an automobile. A lapping edge is provided on the side wall of the rear longitudinal beam, changing the top wall originally used as the lapping area of the rear longitudinal beam to the side wall area. The edge of the rear floor panel assembly does not need to be extended anymore, and the side wall of the rear longitudinal beam will be used as the boundary of the storage space in the vehicle width direction, instead of the extension part of the rear floor as the boundary, thereby not occupying the storage space and ensuring the maximization of the width of the storage space.

[0004] To achieve the above purpose, the present invention provides the following solution: The present invention discloses a rear longitudinal beam assembly, including a rear longitudinal beam body. A lapping edge for lapping the rear floor panel assembly is provided on the side wall of the rear longitudinal beam body. The lapping edge extends along the length direction of the rear longitudinal beam body, and the lapping edge is located in the middle of the height direction of the rear longitudinal beam body. The side wall of the rear longitudinal beam body forms a boundary area from the top to the lapping edge, and the boundary area serves as the boundary of the storage space formed by the rear floor panel assembly in the vehicle width direction.

[0005] Preferably, the rear longitudinal beam body includes a rear longitudinal beam upper plate and a rear longitudinal beam lower plate. The rear longitudinal beam upper plate and the rear longitudinal beam lower plate are buckled and fixedly connected to each other. There is a hollow cavity between the rear longitudinal beam upper plate and the rear longitudinal beam lower plate. A downward bent edge is provided on one side of the rear longitudinal beam upper plate, and an upward bent edge is provided on one side of the rear longitudinal beam lower plate. The upward bent edge and the downward bent edge are correspondingly bent to form an upper fitting edge and a lower fitting edge for fitting. The lapping edge is formed by the fitting and fixed connection of the upper fitting edge and the lower fitting edge.

[0006] Preferably, a front section reinforcing plate and a rear section reinforcing plate are respectively provided on the front half section and the rear half section of the bottom wall of the rear longitudinal beam body. The front section reinforcing plate is used for fixedly connecting with the front cross beam assembly of the rear floor, and the rear section reinforcing plate is used for fixedly connecting with the rear cross beam assembly of the rear floor.

[0007] An automobile rear structure is also disclosed, which includes a rear floor panel assembly and two rear longitudinal beam assemblies. The two rear longitudinal beam assemblies are symmetrically arranged. The rear floor panel assembly is placed on the overlapping edges of the two rear longitudinal beam assemblies and fixedly connected.

[0008] Preferably, it further includes a front cross beam assembly of the rear floor and a rear cross beam assembly of the rear floor, both of which are used for supporting the rear floor panel assembly. The front cross beam assembly of the rear floor is fixedly connected with the front section reinforcing plate in the rear longitudinal beam assembly, and the rear cross beam assembly of the rear floor is fixedly connected with the rear section reinforcing plate in the rear longitudinal beam assembly. Both the front cross beam assembly of the rear floor and the rear cross beam assembly of the rear floor are fixedly connected with the rear floor panel assembly.

[0009] Preferably, the front cross beam assembly of the rear floor includes a front cross beam of the rear floor. At both ends of the middle cross beam of the rear floor, a right connecting plate of the front cross beam and a left connecting plate of the front cross beam are respectively installed. The right connecting plate of the front cross beam is fixedly connected with the front section reinforcing plate of one of the rear longitudinal beam assemblies, and the left connecting plate of the front cross beam is fixedly connected with the front section reinforcing plate of the other rear longitudinal beam assembly. The rear cross beam assembly of the rear floor includes a rear cross beam of the rear floor. At both ends of the rear cross beam of the rear floor, a right connecting plate of the rear cross beam and a left connecting plate of the rear cross beam are respectively installed. The right connecting plate of the rear cross beam is fixedly connected with the rear section reinforcing plate of one of the rear longitudinal beam assemblies, and the left connecting plate of the rear cross beam is fixedly connected with the rear section reinforcing plate of the other rear longitudinal beam assembly.

[0010] Preferably, it further includes an inner panel assembly of the rear enclosure fixedly connected to the rear end of the rear floor panel assembly. A rear connecting plate is provided at the rear end of the rear longitudinal beam body. The inner panel assembly of the rear enclosure is fixedly connected with the rear connecting plate.

[0011] Preferably, the rear floor panel assembly includes a front plate section of the rear floor, an upper cross beam of the rear floor, and a rear plate section of the rear floor. A sunken groove section is formed in the middle of the rear plate section of the rear floor. The front plate section of the rear floor is fixedly connected with the overlapping edge. The rear connecting plate and the inner panel assembly of the rear enclosure are fixedly connected. The front end of the overlapping edge extends to the front end of the rear longitudinal beam body, and the rear end of the overlapping edge extends to the rear connecting plate. There is a placement distance between the rear connecting plate and the rear section reinforcing plate. There is a hollow area between the inner panel assembly of the rear enclosure and the rear cross beam assembly of the rear floor. The groove section passes through the hollow area.

[0012] Preferably, the rear inner panel assembly includes a middle section of the rear inner panel, with a left connecting plate of the rear inner panel and a right connecting plate of the rear inner panel respectively installed at both ends of the middle section of the rear inner panel. The middle section of the rear inner panel is fixedly connected to the rear section of the rear floor panel, the left connecting plate of the rear inner panel is fixedly connected to the rear connecting plate of one of the rear longitudinal beam assemblies, and the right connecting plate of the rear inner panel is fixedly connected to the rear connecting plate of the other rear longitudinal beam assembly.

[0013] An automobile is also disclosed, which adopts the above-mentioned rear structure of the automobile.

[0014] The present invention has achieved the following technical effects compared with the prior art:

[0015] In the present invention, a lapping edge is provided on the side wall of the rear longitudinal beam. The original lapping area on the top wall of the rear longitudinal beam is changed to the side wall of the rear longitudinal beam, and the lapping area is moved downward. At this time, after the edge of the rear floor panel assembly is lapped and fixed with the lapping edge, the edge of the rear floor panel assembly does not need to be drawn again. At this time, the side wall of the rear longitudinal beam body from the lapping edge to the top will be used as the boundary area, and this boundary area will be used as the boundary in the vehicle width direction of the storage space formed by the rear floor panel assembly, rather than the drawn area of the rear floor panel assembly as the boundary. Furthermore, it will not occupy the storage space formed by the rear floor panel assembly, and the maximum space size of the storage space in the vehicle body width can be ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0017] Figure 1 It is a top perspective structural schematic diagram of the rear structure of the automobile in the embodiment of the present invention;

[0018] Figure 2 It is a bottom perspective structural schematic diagram of the rear structure of the automobile in the embodiment of the present invention;

[0019] Figure 3 For Figure 1 detailed marking schematic diagram;

[0020] Figure 4 It is a bottom structural schematic diagram of the rear structure of the automobile in the embodiment of the present invention;

[0021] Figure 5 It is a left side view structural schematic diagram of the rear structure of the automobile in the embodiment of the present invention;

[0022] Figure 6Schematic right side view structure of the rear part structure of the vehicle in the embodiment of the present invention;

[0023] Figure 7 Schematic three-dimensional structure of the rear part structure (without the rear floor panel assembly) of the vehicle in the embodiment of the present invention;

[0024] Figure 8 Schematic top three-dimensional structure of the left and right rear longitudinal beams and the front and rear cross beams assembly of the rear floor in the embodiment of the present invention;

[0025] Figure 9 Schematic bottom view structure of the left and right rear longitudinal beams and the front and rear cross beams assembly of the rear floor in the embodiment of the present invention;

[0026] Figure 10 Schematic top three-dimensional structure of the left rear longitudinal beam assembly in the embodiment of the present invention;

[0027] Figure 11 Another perspective top three-dimensional structure of the left rear longitudinal beam assembly in the embodiment of the present invention;

[0028] Figure 12 Schematic inner side view structure of the left rear longitudinal beam assembly in the embodiment of the present invention;

[0029] Figure 13 Schematic top view structure of the left rear longitudinal beam assembly in the embodiment of the present invention;

[0030] Figure 14 Schematic bottom view structure of the left rear longitudinal beam assembly in the embodiment of the present invention;

[0031] Figure 15 Diagram showing the positional relationship between the rear structure of the vehicle and components such as the motor in the embodiment of the present invention;

[0032] Figure 16 Cross-sectional view of the front section of the rear floor and the corresponding left rear longitudinal beam assembly in the embodiment of the present invention;

[0033] Figure 17 Cross-sectional view of the front section of the rear floor and the corresponding left rear longitudinal beam assembly in the embodiment of the present invention;

[0034] Figure 18 Diagram showing the connection relationship between the upper plate and the lower plate of the rear longitudinal beam in the embodiment of the present invention;

[0035] Figure 19 Diagram showing the connection relationship between the traditional rear longitudinal beam and the traditional rear floor.

[0036] Explanation of reference numerals:

[0037] 1. Rear floor panel assembly; 100. Front section of the rear floor; 101. Upper cross beam of the rear floor; 102. Rear section of the rear floor;

[0038] 2. Rear inner panel assembly; 200. Middle section of rear inner panel; 201. Left connecting plate of rear inner panel; 202. Right connecting plate of rear inner panel;

[0039] 3. Left rear longitudinal beam assembly; 300. Lower plate of left rear longitudinal beam; 301. Upper plate of left rear longitudinal beam; 302. End plate of left rear longitudinal beam; 303. Rear connecting plate of left rear longitudinal beam; 304. Front reinforcement plate of left rear longitudinal beam; 305. Rear reinforcement plate of left rear longitudinal beam; 306. Lapping edge of left rear longitudinal beam; 307. Boundary area of left rear longitudinal beam;

[0040] 4. Right rear longitudinal beam assembly; 400. Lower plate of right rear longitudinal beam; 401. Upper plate of right rear longitudinal beam; 402. End plate of right rear longitudinal beam; 403. Rear connecting plate of right rear longitudinal beam; 404. Front reinforcement plate of right rear longitudinal beam; 405. Rear reinforcement plate of right rear longitudinal beam; 406. Lapping edge of right rear longitudinal beam;

[0041] 5. Front cross beam assembly of rear floor; 500. Middle cross beam of rear floor; 501. Left connecting plate of front cross beam; 502. Right connecting plate of front cross beam; 503. Left reinforcement plate of front cross beam; 504. Right reinforcement plate of front cross beam;

[0042] 6. Rear cross beam assembly of rear floor; 600. Rear cross beam of rear floor; 601. Left connecting plate of rear cross beam; 602. Right connecting plate of rear cross beam;

[0043] 7. Traditional rear floor; 8. Traditional rear longitudinal beam. Detailed implementation mode

[0044] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0045] Embodiment 1

[0046] This embodiment provides a rear longitudinal beam assembly, as Figures 1 to 19As shown, it includes the rear longitudinal beam body. There is a lapping edge on the side wall of the rear longitudinal beam body (the lapping edge can refer to the left rear longitudinal beam lapping edge 306 and the right rear longitudinal beam lapping edge 406). The lapping edge extends along the length direction of the rear longitudinal beam body, and the lapping edge is located in the middle of the rear longitudinal beam body in the height direction (not necessarily the middle position, as long as it is between the top and bottom of the side wall of the rear longitudinal beam body). The lapping edge is used for the edge of the rear floor panel assembly 1 to be lapped. After lapping, the rear floor panel assembly 1 and the lapping edge are fixedly connected. The fixed connection generally adopts a welding method. Of course, other connection methods such as riveting or bolt connection are not excluded. Since the edge of the rear floor panel assembly 1 will be directly lapped and fixed with the lapping edge (which can refer to the left rear longitudinal beam lapping edge 306 and the right rear longitudinal beam lapping edge 406), the edge of the rear floor panel assembly 1 does not need to be drawn again. At this time, the part of the side wall of the rear longitudinal beam body from the top to the lapping edge will be used as the boundary area (which can refer to the left rear longitudinal beam boundary area 307 in the left rear longitudinal beam assembly 3). This boundary area will be used as the boundary of the storage space formed by the rear floor panel assembly 1 in the vehicle width direction, rather than the drawn part of the rear floor panel assembly 1 as the boundary, thus not encroaching on the storage space formed by the rear floor panel assembly 1 and ensuring that the storage space has the largest space size in the vehicle body width.

[0047] In an embodiment, as Figures 1 to 19 shown, the rear longitudinal beam body includes a rear longitudinal beam upper plate and a rear longitudinal beam lower plate. The rear longitudinal beam lower plate can refer to the left rear longitudinal beam lower plate 300 and the right rear longitudinal beam lower plate 400, and the rear longitudinal beam upper plate can refer to the left rear longitudinal beam upper plate 301 and the right rear longitudinal beam upper plate 401. The rear longitudinal beam upper plate and the rear longitudinal beam lower plate are mutually buckled and fixedly connected. The fixed connection generally adopts a welding method. Of course, other connection methods such as riveting or bolt connection are not excluded. There is a hollow cavity between the rear longitudinal beam upper plate and the rear longitudinal beam lower plate. There is a downward bending edge on one side of the rear longitudinal beam upper plate, and there is an upward bending edge on one side of the rear longitudinal beam lower plate. The upward bending edge is bent to form an upward fitting edge, and the downward bending edge is bent to form a downward fitting edge. The upward fitting edge and the downward fitting edge correspond to each other. After the upward fitting edge and the downward fitting edge are mutually attached and fixedly connected, a lapping edge (which can refer to the left rear longitudinal beam lapping edge 306 and the right rear longitudinal beam lapping edge 406) can be formed. The fixed connection generally adopts a welding method. Of course, other connection methods such as riveting or bolt connection are not excluded.

[0048] In this embodiment, there are the following advantages:

[0049] 1. Reduce the stamping difficulty: The traditional rear longitudinal beam 8 is U-shaped. After the traditional rear floor 7 is buckled on the traditional rear longitudinal beam 8, in order to ensure that the rear longitudinal beam body has sufficient strength, the U-shaped opening depth of the traditional rear longitudinal beam 8 has sufficient depth (i.e., the dimension in the height direction). This requires deep drawing of the sheet metal of the traditional rear longitudinal beam 8, and high-strength steel is generally used for the traditional rear longitudinal beam 8, so the risk of deep drawing cracking is large. In this embodiment, since the overlapping edge is located in the middle of the height, compared with the top wall of the traditional rear longitudinal beam 8 as the overlapping area, with the same height of the rear longitudinal beam body, the overlapping position is relatively lowered. Therefore, the fitting edge of the upper plate of the rear longitudinal beam is lowered, and the fitting edge of the lower plate of the rear longitudinal beam is also lowered, making the overall shape of both similar to a "zigzag" structure. This makes the opening depth of the lower plate of the rear longitudinal beam shallower (the dimension in the height direction is reduced), the drawing depth is reduced, and the cracking risk is reduced, so the stamping difficulty is reduced.

[0050] 2. Increase the width of the storage space: After the upper plate of the rear longitudinal beam and the lower plate of the rear longitudinal beam are buckled, the formed overlapping edge (reference can be made to the overlapping edge 306 of the left rear longitudinal beam) is lowered compared with the overlapping area of the traditional rear floor 7 and the traditional rear longitudinal beam 8. At this time, it is not necessary for the traditional rear floor 7 to be drawn downward to serve as the boundary in the vehicle body width direction of the storage space, but the boundary in the vehicle body width direction of the storage space of the upper plate of the rear longitudinal beam (reference can be made to the boundary area 307 of the left rear longitudinal beam). Therefore, the size of the vehicle body width direction of the storage space is relatively increased.

[0051] 3. Increase the stiffness advantage: Stiffness is a basic physical quantity used to describe the elastic deformation form of a structure under the action of external forces. The greater the stiffness, the smaller the deformation of the structure under the same external force, and the better the strength and stability of the structure. For the design of the automotive longitudinal beam structure, there are many limitations. There are the rear seat space, storage space, spare tire placement space, vehicle tool space, etc. inside the vehicle squeezing outward, while there are the tire, suspension, rear subframe, motor, wiring pipes, etc. outside the vehicle squeezing inward; so we need to design a rigid structure that can meet the vehicle body performance requirements in a limited space.

[0052] When designing the forward structure, we can adjust the cross-section at the key positions, and then calculate the stiffness of the structure through the cross-section. Therefore, by comparing the stiffness of this rear longitudinal beam assembly and the traditional rear longitudinal beam structure (traditional rear longitudinal beam 7 and traditional rear floor 8), we can judge whether the structure proposed in this patent has advantages:

[0053] For the stiffness of the rigid structure, we can calculate it through the formula where K represents stiffness, 48 is a constant, E is Young's modulus (which is a fixed value in the case where this rear longitudinal beam assembly and the traditional rear longitudinal beam structure use the same material), and I yis the moment of inertia when a force is applied from above (which can be obtained by measurement), and L is the longitudinal length of the part, which is set to be equal here. In summary, the structural cross-section size and overlap position of this rear longitudinal beam assembly are adjusted during the design process. The material of this rear longitudinal beam assembly and the traditional rear longitudinal beam structure is the same. Only I y A variable, so put it into the formula without changing other variables, I y The larger it is, the greater the stiffness K is.

[0054] After measurement, Figure 19 The traditional rear longitudinal beam structure is measured and found to be y =2.058×10 6 mm4; Figure 18 The measurement of the rear longitudinal beam assembly of Zhongben shows that I y =2.118×10 6 mm4, which is larger than the traditional rear longitudinal beam structure. Therefore, the K value of the present rear longitudinal beam assembly is larger, so the structural rigidity of the present rear longitudinal beam assembly is advantageous over the traditional rear longitudinal beam structure.

[0055] In one embodiment, if Figures 1 to 19 As shown, the front half of the bottom wall of the rear longitudinal beam body is provided with a front section reinforcement plate (refer to the front section reinforcement plate 304 of the left rear longitudinal beam and the front section reinforcement plate 404 of the right rear longitudinal beam), and the front section reinforcement plate is used for fixing the rear floor front cross beam assembly 5, and the fixing connection generally adopts welding, and of course other connection methods such as riveting or bolting are not excluded. The rear half of the bottom wall of the rear longitudinal beam body is provided with a rear section reinforcement plate (refer to the rear section reinforcement plate 305 of the left rear longitudinal beam and the rear section reinforcement plate 405 of the right rear longitudinal beam), and the rear section reinforcement plate is used for fixing the rear floor rear cross beam assembly 6, and the fixing connection generally adopts welding, and of course other connection methods such as riveting or bolting are not excluded.

[0056] Further, in one embodiment, if Figures 1 to 19 As shown, the front section reinforcement plate and the rear section reinforcement plate are respectively arranged at the front half and the rear half of the lower plate of the rear longitudinal beam.

[0057] In one embodiment, if Figures 1 to 19 As shown, a rear connecting plate is provided at the rear end of the rear longitudinal beam body (refer to the rear connecting plate 303 of the left rear longitudinal beam and the rear connecting plate 403 of the right rear longitudinal beam), and the rear connecting plate is used for fixing the rear inner panel assembly 2. The fixing connection is generally carried out by welding, and of course other connection methods such as riveting or bolting are not excluded.

[0058] Further, in one embodiment, if Figures 1 to 19 As shown, the rear connecting plate is arranged at the rear end of the upper plate of the rear longitudinal beam.

[0059] In one embodiment, if Figures 1 to 19As shown, a rear end plate is provided on the outer side of the rear end of the rear longitudinal beam body. Reference can be made to the left rear longitudinal beam end plate 302 and the right rear longitudinal beam end plate 402.

[0060] Furthermore, in one embodiment, as Figures 1 to 19 shown, the rear end plate is provided on the outer side of the rear end of the upper plate of the rear longitudinal beam. For example, the left rear longitudinal beam end plate 302 is provided on the left side of the left rear longitudinal beam upper plate 301, and the right rear longitudinal beam end plate 402 is provided on the right side of the right rear longitudinal beam upper plate 401.

[0061] Embodiment 2

[0062] This embodiment provides an automotive rear structure, as Figures 1 to 19 shown, including a rear floor panel assembly 1 and two rear longitudinal beam assemblies in Embodiment 1. The two rear longitudinal beam assemblies are symmetrically arranged, and the overlapping edges of the two rear longitudinal beam assemblies face each other. One of the two rear longitudinal beam assemblies is a left rear longitudinal beam assembly 3, and the other is a right rear longitudinal beam assembly 4. The left edge of the rear floor panel assembly 1 is lapped on the left rear longitudinal beam overlapping edge 306 of the left rear longitudinal beam assembly 3 and fixedly connected, and the right edge of the rear floor panel assembly 1 is lapped on the right rear longitudinal beam overlapping edge 406 of the right rear longitudinal beam assembly 4 and fixedly connected. The aforementioned fixed connection generally adopts a welding method. Of course, other connection methods such as riveting or bolt connection are not excluded.

[0063] Since the overlapping edge has moved from the top wall of the original rear longitudinal beam assembly to the middle part of the side wall, the overlapping part of the rear floor panel assembly 1 and the rear longitudinal beam assembly has been moved downward accordingly. At this time, the part of the side wall of the left rear longitudinal beam assembly 3 from the top to the left rear longitudinal beam overlapping edge 306 forms a left rear longitudinal beam boundary area 307, and the part of the side wall of the right rear longitudinal beam assembly 4 from the top to the right rear longitudinal beam overlapping edge 406 forms a right rear longitudinal beam boundary area. The left rear longitudinal beam boundary area 307, the right rear longitudinal beam boundary area, and the rear floor panel assembly 1 together form a passenger and storage space. The left rear longitudinal beam boundary area 307 and the right rear longitudinal beam boundary area are the boundaries of the passenger and storage space. Compared with the overlapping method of the upper surfaces of the traditional rear floor 7 and the traditional longitudinal beam upper plate 8, the passenger and storage space formed by this automotive rear structure is larger.

[0064] In one embodiment, as Figures 1 to 19As shown in the figure, the rear structure of the vehicle further includes a front rear floor crossmember assembly 5 and a rear rear floor crossmember assembly 6. Both the front rear floor crossmember assembly 5 and the rear rear floor crossmember assembly 6 are used to support the rear floor panel assembly 1. The front half and the rear half of the left rear longitudinal beam assembly 3 are respectively provided with a front left rear longitudinal beam reinforcement plate 304 and a rear left rear longitudinal beam reinforcement plate 305. The front half and the rear half of the right rear longitudinal beam assembly 4 are respectively provided with a front right rear longitudinal beam reinforcement plate 404 and a rear right rear longitudinal beam reinforcement plate 405. The left end of the front rear floor crossmember assembly 5 is fixedly connected to the front left rear longitudinal beam reinforcement plate 304, and the right end of the front rear floor crossmember assembly 5 is fixedly connected to the front right rear longitudinal beam reinforcement plate 404. The left end of the rear rear floor crossmember assembly 6 is fixedly connected to the rear left rear longitudinal beam reinforcement plate 305, and the right end of the rear rear floor crossmember assembly 6 is fixedly connected to the rear right rear longitudinal beam reinforcement plate 405. The above-mentioned fixed connections generally adopt welding methods. Of course, other connection methods such as riveting or bolt connection are not excluded. The left rear longitudinal beam assembly 3, the right rear longitudinal beam assembly 4, the front rear floor crossmember assembly 5 and the rear rear floor crossmember assembly 6 form an integral skeleton, ensuring the performance of the rear part of the vehicle body and providing installation conditions for functional components.

[0065] In an embodiment, as Figures 1 to 19 shown, the front rear floor crossmember assembly 5 includes a middle rear floor crossmember 500. The left and right ends of the middle rear floor crossmember 500 are respectively installed with a left front crossmember connecting plate 501 and a right front crossmember connecting plate 502. The right front crossmember connecting plate 502 is fixedly connected to the front right rear longitudinal beam reinforcement plate 404 of the right rear longitudinal beam assembly 4, and the left front crossmember connecting plate 501 is fixedly connected to the front left rear longitudinal beam reinforcement plate 304 of the left rear longitudinal beam assembly 3. The above-mentioned fixed connections generally adopt welding methods. Of course, other connection methods such as riveting or bolt connection are not excluded.

[0066] The rear rear floor crossmember assembly 6 includes a rear rear floor crossmember 600. The left and right ends of the rear rear floor crossmember 600 are respectively installed with a left rear crossmember connecting plate 601 and a right rear crossmember connecting plate 602. The right rear crossmember connecting plate 602 is fixedly connected to the rear right rear longitudinal beam reinforcement plate 405 of the right rear longitudinal beam assembly 4, and the left rear crossmember connecting plate 601 is fixedly connected to the rear left rear longitudinal beam reinforcement plate 305 of the left rear longitudinal beam assembly 3. The above-mentioned fixed connections generally adopt welding methods. Of course, other connection methods such as riveting or bolt connection are not excluded.

[0067] In an embodiment, as Figures 1 to 19 shown, the left end and the right end inside the middle rear floor crossmember 500 are respectively provided with a left front crossmember reinforcement plate 503 and a right front crossmember reinforcement plate 504.

[0068] In an embodiment, as Figures 1 to 19As shown, the rear structure of the vehicle further includes an inner rear panel assembly 2. The inner rear panel assembly 2 is fixedly connected to the rear end of the rear floor panel assembly 1. A rear connecting plate 303 of the left rear longitudinal beam is provided at the rear end of the left rear longitudinal beam assembly 3, and a rear connecting plate 403 of the right rear longitudinal beam is provided at the rear end of the right rear longitudinal beam assembly 4. The left end of the inner rear panel assembly 2 is fixedly connected to the rear connecting plate 303 of the left rear longitudinal beam, and the right end of the inner rear panel assembly 2 is fixedly connected to the rear connecting plate 403 of the right rear longitudinal beam. The above-mentioned fixed connection generally adopts a welding method, and of course, other connection methods such as riveting or bolt connection are not excluded.

[0069] Further, in an embodiment, as Figures 1 to 19 shown, the left rear longitudinal beam assembly 3 includes a left rear longitudinal beam lower plate 300 and a left rear longitudinal beam upper plate 301, and the left rear longitudinal beam lower plate 300 and the left rear longitudinal beam upper plate 301 are buckled and fixedly connected to each other. A front reinforcing plate 304 of the left rear longitudinal beam and a rear reinforcing plate 305 of the left rear longitudinal beam are respectively arranged in the front half and the rear half of the left rear longitudinal beam lower plate 300. The rear connecting plate 303 of the left rear longitudinal beam is arranged at the rear end of the left rear longitudinal beam upper plate 301. The above-mentioned fixed connection generally adopts a welding method, and of course, other connection methods such as riveting or bolt connection are not excluded.

[0070] The right rear longitudinal beam assembly 4 includes a right rear longitudinal beam lower plate 400 and a right rear longitudinal beam upper plate 401, and the right rear longitudinal beam lower plate 400 and the right rear longitudinal beam upper plate 401 are buckled and fixedly connected to each other. A front reinforcing plate 404 of the right rear longitudinal beam and a rear reinforcing plate 405 of the right rear longitudinal beam are respectively arranged in the front half and the rear half of the right rear longitudinal beam lower plate 400. The rear connecting plate 403 of the right rear longitudinal beam is arranged at the rear end of the right rear longitudinal beam upper plate 401. The above-mentioned fixed connection generally adopts a welding method, and of course, other connection methods such as riveting or bolt connection are not excluded.

[0071] In an embodiment, as Figures 1 to 19As shown in the figure, the rear floor panel assembly 1 includes a rear floor front panel section 100, a rear floor upper crossmember 101, and a rear floor rear panel section 102 arranged in sequence. The middle part of the rear floor rear panel section 102 has a sunken groove section. The rear floor rear panel section 102 is fixedly connected to the rear inner panel assembly 2. The left edge of the rear floor front panel section 100 is lapped and fixed with the left rear longitudinal beam lapping edge 306, and the right edge of the rear floor front panel section 100 is lapped and fixed with the right rear longitudinal beam lapping edge 406. The front end of the left rear longitudinal beam lapping edge 306 extends to the front end of the left rear longitudinal beam assembly 3, and the rear end of the left rear longitudinal beam lapping edge 306 extends to the left rear longitudinal beam rear connecting plate 303. There is an installation spacing between the left rear longitudinal beam rear connecting plate 303 and the left rear longitudinal beam rear section reinforcement plate 305. The front end of the right rear longitudinal beam lapping edge 406 extends to the front end of the right rear longitudinal beam assembly 4, and the rear end of the right rear longitudinal beam lapping edge 406 extends to the right rear longitudinal beam rear connecting plate 403. There is an installation spacing between the right rear longitudinal beam rear connecting plate 403 and the right rear longitudinal beam rear section reinforcement plate 405. After the rear floor rear crossmember assembly 6 is installed on the right rear longitudinal beam rear section reinforcement plate 405 and the left rear longitudinal beam rear section reinforcement plate 305, an empty area can be formed between the rear floor rear crossmember assembly 6 and the rear inner panel assembly 2 under the action of the installation spacing, and the groove section in the middle of the rear floor rear panel section 102 passes through this empty area.

[0072] Among them, the rear floor front panel section 100, the rear floor upper crossmember 101, and the rear floor rear panel section 102 constitute the bottom limiting surface of the storage space, providing lower support for the storage space. The left rear longitudinal beam boundary area 307 of the left rear longitudinal beam assembly 3 is the left limit of the storage space, the right rear longitudinal beam boundary area of the right rear longitudinal beam assembly 4 is the right limiting surface of the storage space, and the rear inner panel assembly 2 is the rear boundary of the storage space. The storage space of the rear floor front panel section 100 and the rear floor upper crossmember 101 is the passenger compartment, the rear floor upper crossmember 101 and the rear floor rear panel section 102 are the luggage compartment, and the sunken groove section of the rear floor rear panel section 102 constitutes a secondary storage space, making full use of the space and further meeting consumers' needs for a large storage space.

[0073] In an embodiment, as Figures 1 to 19 shown, the rear inner panel assembly 2 includes a rear inner panel middle section 200. The left end and the right end of the rear inner panel middle section 200 are respectively installed with a rear inner panel left connecting plate 201 and a rear inner panel right connecting plate 202. The rear inner panel middle section 200 is fixedly connected to the rear floor rear panel section 102. The rear inner panel left connecting plate 201 is fixedly connected to the left rear longitudinal beam rear connecting plate 303 of the left rear longitudinal beam assembly 3, and the rear inner panel right connecting plate 202 is fixedly connected to the right rear longitudinal beam rear connecting plate 403 of the right rear longitudinal beam assembly 4. The above-mentioned fixed connection generally adopts a welding method, and of course, other connection methods such as riveting or bolt connection are not excluded.

[0074] In an embodiment, as Figures 1 to 19As shown in the figure, a left rear longitudinal beam end plate 302 is provided on the left side of the left rear longitudinal beam upper plate 301, and a right rear longitudinal beam end plate 402 is provided on the right side of the right rear longitudinal beam upper plate 401. The left connecting plate 201 of the inner rear panel is fixedly connected to the left rear longitudinal beam end plate 302, and the right connecting plate 202 of the inner rear panel is fixedly connected to the right rear longitudinal beam end plate 402. The above-mentioned fixed connection generally adopts the welding method, and of course, other connection methods such as riveting or bolt connection are not excluded.

[0075] Embodiment 3

[0076] This embodiment provides a vehicle, as Figures 1 to 19 shown, this vehicle adopts the vehicle rear structure in Embodiment 2. The vehicle is a new energy vehicle or a fuel vehicle.

[0077] In one embodiment, as Figures 1 to 19 shown, the vehicle is a new energy vehicle. The overlapping parts between the rear floor panel assembly 1 and the left rear longitudinal beam assembly 3, and between the rear floor panel assembly 1 and the right rear longitudinal beam assembly 4 are both in the middle area of the longitudinal beam. While avoiding the motor and the subframe, the height of the rear floor panel assembly 1 can be minimized to increase the storage space at the rear.

[0078] Specific examples are used in the present invention to elaborate on the principles and implementation manners of the present invention. The descriptions of the above embodiments are only used to help understand the method and its core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manners and application scopes. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. A rear longitudinal beam assembly, characterized in that: It includes a rear longitudinal beam body, and the side walls of the rear longitudinal beam body are provided with overlapping edges for overlapping the rear floor panel assembly, the overlapping edges extend along the length direction of the rear longitudinal beam body, the overlapping edges are located in the middle of the rear longitudinal beam body in the height direction, and the side walls of the rear longitudinal beam body form a boundary area from the top to the overlapping edges, and the boundary area serves as the boundary of the passenger and storage space formed by the rear floor panel assembly in the vehicle width direction.

2. The rear longitudinal beam assembly according to claim 1, characterized in that: The rear longitudinal beam body comprises an upper plate and a lower plate, which are interlocked and fixedly connected with each other, and a hollow cavity is provided between the upper plate and the lower plate, a lower bent edge is provided on one side of the upper plate, and an upper bent edge is provided on one side of the lower plate, and the upper bent edge and the lower bent edge are correspondingly bent to form an upper bonding edge and a lower bonding edge for bonding, and the overlapping edge is formed by bonding and fixedly connecting the upper bonding edge and the lower bonding edge.

3. The rear longitudinal beam assembly according to claim 1, characterized in that: The front and rear halves of the bottom wall of the rear longitudinal beam body are respectively provided with a front reinforcement plate and a rear reinforcement plate, wherein the front reinforcement plate is used for fixed connection with the rear floor front cross beam assembly, and the rear reinforcement plate is used for fixed connection with the rear floor rear cross beam assembly.

4. A rear structure of an automobile, characterized in that: It comprises a rear floor panel assembly and two rear longitudinal beam assemblies as described in any one of claims 1 to 3, wherein the two rear longitudinal beam assemblies are symmetrically arranged, and the rear floor panel assembly is overlapped on the overlapping edges of the two rear longitudinal beam assemblies and fixedly connected.

5. The rear structure of an automobile according to claim 4, characterized in that: It also includes a rear floor front cross beam assembly and a rear floor rear cross beam assembly, both of which are used to support the rear floor panel assembly. The rear floor front cross beam assembly is fixedly connected to the front section reinforcement plate in the rear longitudinal beam assembly described in claim 3, and the rear floor rear cross beam assembly is fixedly connected to the rear section reinforcement plate in the rear longitudinal beam assembly described in claim 3. The rear floor front cross beam assembly and the rear floor rear cross beam assembly are both fixedly connected to the rear floor panel assembly.

6. The rear structure of an automobile according to claim 5, characterized in that: The front cross beam assembly of the rear floor includes a front cross beam of the rear floor, and a front cross beam right connecting plate and a front cross beam left connecting plate are respectively installed at both ends of the cross beam of the rear floor, the front cross beam right connecting plate is fixedly connected to the front section reinforcement plate of one of the rear longitudinal beam assemblies, and the front cross beam left connecting plate is fixedly connected to the front section reinforcement plate of the other rear longitudinal beam assembly; the rear cross beam assembly of the rear floor includes a rear cross beam of the rear floor, and a rear cross beam right connecting plate and a rear cross beam left connecting plate are respectively installed at both ends of the rear cross beam of the rear floor, the rear cross beam right connecting plate is fixedly connected to the rear section reinforcement plate of one of the rear longitudinal beam assemblies, and the rear cross beam left connecting plate is fixedly connected to the rear section reinforcement plate of the other rear longitudinal beam assembly.

7. The rear structure of an automobile according to claim 6, characterized in that: It also includes a rear enclosure inner panel assembly fixedly connected to the rear end of the rear floor panel assembly, a rear connecting plate is provided at the rear end of the rear longitudinal beam body, and the rear enclosure inner panel assembly is fixedly connected to the rear connecting plate.

8. The rear structure of an automobile according to claim 7, characterized in that: The rear floor panel assembly includes a rear floor front panel section, a rear floor upper cross beam and a rear floor rear panel section, the rear floor rear panel section has a sunken groove section in the middle, the rear floor front panel section is fixedly connected to the overlapping edge, the rear connecting plate and the rear enclosure inner panel assembly are fixedly connected, the front end of the overlapping edge extends to the front end of the rear longitudinal beam body, the rear end of the overlapping edge extends to the rear connecting plate, there is a placement spacing between the rear connecting plate and the rear section reinforcement plate, there is a hollow area between the rear enclosure inner panel assembly and the rear floor rear cross beam assembly, the hollow area is for the groove section to pass through.

9. The automobile rear structure according to claim 8, characterized in that: The rear enclosure inner panel assembly includes a rear enclosure inner panel middle section, and a rear enclosure inner panel left connecting plate and a rear enclosure inner panel right connecting plate are respectively installed at both ends of the rear enclosure inner panel middle section, the rear enclosure inner panel middle section is fixedly connected to the rear panel section of the rear floor, the rear enclosure inner panel left connecting plate is fixedly connected to the rear connecting plate of one of the rear longitudinal beam assemblies, and the rear enclosure inner panel right connecting plate is fixedly connected to the rear connecting plate of the other rear longitudinal beam assembly.

10. An automobile, characterized in that: The rear structure of an automobile as claimed in any one of claims 4 to 9 is adopted.

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