Vehicle body rear structure and vehicle

Abstract

The utility model provides a vehicle body rear structure and a vehicle. The vehicle body rear structure comprises rear shock absorption towers arranged on the left side and the right side respectively, a first cross beam connected between the rear shock absorption towers on the two sides, and rear cabin rear longitudinal beams connected to the rear portions of the rear shock absorption towers on the two sides respectively. The rear shock absorption towers on the two sides are integrally formed, a power assembly suspension mounting support is arranged on the first cross beam, the first cross beam is connected between the rear cabin rear longitudinal beams on the two sides, and the first cross beam, the first cross beam, the rear shock absorption towers on the two sides and the rear cabin rear longitudinal beams on the two sides are connected to form an annular structure. According to the vehicle body rear structure, the rear shock absorption towers on the two sides are integrally formed, and the first cross beam, the second cross beam, the rear shock absorption towers on the two sides and the rear cabin rear longitudinal beams on the two sides are connected to form the annular structure, so that the rigidity of a power assembly suspension mounting point can be improved by means of the characteristic of high strength of the annular structure; the arrangement stability of the power assembly in the vehicle can be improved, and the quality of the whole vehicle can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a vehicle body rear structure. Meanwhile, the utility model also relates to a vehicle provided with the vehicle body rear structure. Background Art

[0002] In vehicles with rear-mounted powertrains, such as high-performance vehicles with low streamlined bodies, the rear-mounted powertrain is generally mounted on a beam structure in the rear compartment of the vehicle body through suspension. However, due to the current layout of the beam structure in the rear compartment of the vehicle body, there is still a lack of connection between the beams, which easily limits the increase in the stiffness of the powertrain suspension installation point, is not conducive to improving the stability of the powertrain installation, and affects the overall quality of the vehicle. Utility Model Content

[0003] In view of this, the utility model aims to provide a vehicle body rear structure to improve the installation stability of the powertrain.

[0004] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0005] A vehicle body rear structure, comprising rear shock towers disposed on left and right sides, a first crossbeam connected between the rear shock towers on both sides, and rear longitudinal beams of a rear cabin respectively connected to rear portions of the rear shock towers on each side;

[0006] The rear shock absorber towers on both sides are integrally formed, a powertrain suspension mounting bracket is provided on the cabin cross beam, and a second cross beam is connected between the rear longitudinal beams of the rear cabins on both sides, and the first cross beam, the second cross beam, the rear shock absorber towers on both sides and the rear longitudinal beams of the rear cabins on both sides are connected to form an annular structure.

[0007] Furthermore, the rear shock tower on each side has a connection end protruding backwards, and the end of the connection end is provided with a connection groove, and the front end of the rear longitudinal beam of the rear cabin on each side is connected to the connection groove on the corresponding side.

[0008] Further, the connecting groove has an upper connecting wall and a lower connecting wall arranged opposite to each other, and a side connecting wall located on one side of the rear longitudinal beam of the rear cabin;

[0009] The upper connecting wall, the lower connecting wall and the side connecting wall are all connected to the rear longitudinal beam of the rear cabin.

[0010] Further, at least one of the upper connecting wall, the lower connecting wall and the side connecting wall is connected to the rear longitudinal beam of the rear compartment through a riveted structure; and / or,

[0011] At least one of the upper connecting wall, the lower connecting wall and the side connecting wall is welded to the rear longitudinal beam of the rear compartment.

[0012] Further, at least one of the upper connecting wall and the lower connecting wall is triangular; and / or,

[0013] In the left-right direction of the whole vehicle, the side connecting wall is located on the side of the rear longitudinal beam of the rear compartment facing the interior of the vehicle.

[0014] Further, the first cross beam is connected to the ends of the rear ends of the rear longitudinal beams of the rear cabin on both sides; and / or,

[0015] At least one of the rear longitudinal beams of the rear compartment on both sides, the first cross beam and the second cross beam is made of extruded profile.

[0016] Furthermore, the rear shock absorber towers on both sides are integrally cast, and are annular in shape, and each of the rear shock absorber towers is provided with a through hole for the transmission shaft to pass through, a shock absorber mounting portion, and a plurality of swing arm mounting portions;

[0017] The shock absorber mounting portion is located at the top of the rear shock absorber tower, and a plurality of swing arm mounting portions are arranged around the through hole.

[0018] Further, the shock absorber mounting portion includes a shock absorber mounting boss provided on the rear shock absorber tower, and the shock absorber mounting boss is provided with a shock absorber mounting hole;

[0019] Each of the swing arm mounting parts comprises a swing arm mounting boss arranged on the rear shock absorber tower, and a swing arm mounting hole is arranged on the swing arm mounting boss.

[0020] Furthermore, the rear shock absorber tower is provided with a reinforcing rib connected to the shock absorber mounting boss, and the reinforcing rib is arranged along the height direction of the rear shock absorber tower.

[0021] Compared with the prior art, the utility model has the following advantages:

[0022] The rear vehicle body structure described in the utility model is achieved by integrally forming the rear shock towers on both sides, and connecting the first cross beam, the second cross beam, the rear shock towers on both sides and the rear longitudinal beams of the rear compartment on both sides to form an annular structure. By taking advantage of the high strength of the annular structure, the rigidity of the powertrain suspension mounting point can be increased, which helps to improve the stability of the powertrain arrangement in the vehicle and is beneficial to improving the quality of the entire vehicle.

[0023] In addition, by providing a connection groove on the rear shock tower and connecting the front end of the rear longitudinal beam of the rear cabin to the connection groove, the connection between the rear longitudinal beam of the rear cabin and the rear shock tower can be facilitated, and the reliability of the connection between them can be ensured. By connecting the upper and lower connection walls and the side connection walls of the connection groove to the rear longitudinal beam of the rear cabin, the end of the rear longitudinal beam of the rear cabin can be facilitated to enter the connection groove through a three-sided connection method, and the supporting effect on the rear longitudinal beam of the rear cabin can be improved, thereby ensuring the reliability of the connection between the rear longitudinal beam of the rear cabin and the rear shock tower.

[0024] Secondly, riveting and welding the connecting walls to the rear longitudinal beam of the rear cabin is easy to operate and can also ensure the reliability of the connection. By setting the upper and lower connecting walls in a triangle, the structural strength of the triangle can be increased by taking advantage of its high structural strength; and the side connecting wall is located on the side of the rear longitudinal beam of the rear cabin facing the vehicle interior, which can play a role of lateral support when the vehicle is hit by a side collision, helping to improve the ability to cope with side collisions.

[0025] In addition, by connecting the second cross beam to the end of the rear longitudinal beam of the rear cabin, it can be used as a rear anti-collision beam at the rear of the vehicle body, thereby achieving multiple uses and giving full play to the setting effect of the rear anti-collision beam; and making the rear longitudinal beam of the rear cabin and each cross beam use extruded profiles, it is beneficial to the preparation of each beam body and can also ensure the structural strength of each beam body.

[0026] By configuring the rear shock absorber tower to be ring-shaped and arranging a shock absorber mounting portion and a swing arm mounting portion thereon, the high strength of the ring structure can be utilized to increase the structural strength of the rear shock absorber tower. This also facilitates the integrated design of the mounting structure on the shock absorber tower, helping to reduce the difficulty of designing and preparing the mounting structure.

[0027] In addition, the shock absorber mounting part and the swing arm mounting part adopt a mounting boss with mounting holes arranged on the rear shock absorber tower, which has a simple structure, is easy to form, and is also conducive to the installation operation of the shock absorber and the swing arm. By providing a reinforcing rib connected to the shock absorber mounting boss and arranged along the height direction of the rear shock absorber tower, the stiffness of the shock absorber mounting point can be increased, which can improve the reliability of the shock absorber installation.

[0028] Another object of the present invention is to provide a vehicle, wherein the vehicle is provided with the vehicle body rear structure as described above.

[0029] The vehicle described in the utility model has all the beneficial effects of the above-mentioned rear body structure, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0031] Figure 1 This is a schematic structural diagram of the rear vehicle body structure according to an embodiment of the utility model;

[0032] Figure 2 It is a structural schematic diagram of the rear vehicle body structure according to an embodiment of the utility model at another viewing angle;

[0033] Figure 3 It is a structural schematic diagram of the rear vehicle body structure according to an embodiment of the utility model at another viewing angle;

[0034] Figure 4 It is a structural schematic diagram of the rear shock tower according to an embodiment of the utility model;

[0035] Figure 5 It is a structural schematic diagram of the rear shock tower according to an embodiment of the utility model from another perspective;

[0036] Figure 6 This is a schematic structural diagram of the first crossbeam described in an embodiment of the utility model;

[0037] Figure 7 This is a diagram of the assembly state of the rear longitudinal beam and the connecting bracket of the rear cabin according to the embodiment of the utility model;

[0038] Figure 8 It is a structural schematic diagram of the connecting bracket described in an embodiment of the utility model.

[0039] Description of reference numerals:

[0040] 1. Rear shock tower; 2. Rear longitudinal beam of rear cabin; 3. First cross beam; 4. Second cross beam; 5. Powertrain suspension mounting bracket; 6. Connecting frame; K. Through hole;

[0041] 101, shock absorber avoidance groove; 1011, shock absorber mounting boss; 1012, reinforcing rib; 102, swing arm avoidance groove; 1021, swing arm mounting boss; 103, connecting groove; 1031, upper connecting wall; 1032, lower connecting wall; 1033, side connecting wall; 104, reinforcing rib;

[0042] 301, middle part; 302, end part;

[0043] 601, main board; 602, side board. DETAILED DESCRIPTION

[0044] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0045] In the description of the present invention, it should be noted that if there are terms such as "upper", "lower", "inner", "outer" and the like indicating orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, if there are terms such as "first" and "second", they are also used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0046] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installation", "connection", "connection" and "connector" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.

[0047] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0048] The present embodiment relates to a vehicle body rear structure, including rear shock towers 1 arranged on the left and right sides, a first crossbeam 3 connected between the rear shock towers 1 on the two sides, and rear cabin rear longitudinal beams 2 respectively connected to the rear of the rear shock towers 1 on each side. The rear shock towers 1 on both sides are integrally formed, a powertrain suspension mounting bracket 5 is provided on the first crossbeam 3, and a second crossbeam 4 is connected between the rear cabin rear longitudinal beams 2 on both sides, and the first crossbeam 3, the second crossbeam 4, the rear shock towers 1 on both sides, and the rear cabin rear longitudinal beams 2 on both sides are connected to form a ring structure.

[0049] The rear vehicle body structure of the present embodiment is achieved by integrally forming the rear shock towers 1 on both sides, and connecting the first cross beam 3, the second cross beam 4, the rear shock towers 1 on both sides and the rear longitudinal beams 2 of the rear compartment on both sides to form an annular structure. By taking advantage of the high strength of the annular structure, the rigidity of the powertrain suspension mounting point can be increased, which helps to improve the stability of the powertrain arrangement in the vehicle and is beneficial to improving the quality of the entire vehicle.

[0050] Based on the above overall introduction, an exemplary structure of the rear vehicle body structure of this embodiment is referred to as Figures 1 to 3 As shown in , the first cross beam 3 is higher than the second cross beam 4 in the height direction of the vehicle, so as to facilitate the installation of the power assembly from the top angle of the power assembly, which can facilitate the installation and arrangement of the power assembly. Here, in order to facilitate the understanding of this embodiment, the structure of the rear shock tower 1 is first introduced, and its specific structure is referred to Figure 4 and Figure 5As shown in , both rear shock absorber towers 1 are integrally cast and are annular, and each rear shock absorber tower 1 is provided with a through hole K for the transmission shaft to pass through, a shock absorber mounting portion and a plurality of swing arm mounting portions. In addition, the shock absorber mounting portion is located at the top of the rear shock absorber tower 1, and the plurality of swing arm mounting portions are arranged around the through hole K.

[0051] In this embodiment, the rear shock tower 1 is integrally cast, which can facilitate the preparation of the rear shock tower 1, reduce the preparation cost, and ensure the structural strength of the rear shock tower 1. By setting the rear shock tower 1 in a ring shape and arranging a shock absorber mounting portion and a swing arm mounting portion on the rear shock tower 1, not only can the structural strength of the rear shock tower 1 be increased by utilizing the high strength of the ring structure, but it can also facilitate the preparation of the rear shock tower 1 and reduce the preparation cost. At the same time, it can also facilitate the integrated design of the installation structure on the rear shock tower 1, which helps to reduce the difficulty of designing and preparing the installation structure, and can improve the comprehensive performance of the rear shock tower 1.

[0052] Specifically, combined with Figure 4 and Figure 5 As shown in , the through hole K for the transmission shaft to pass through is roughly a long hole extending in the vertical direction of the vehicle. The rear shock tower 1 is arranged in the shape of the through hole K, and a protruding portion protruding upward is provided on the top of the rear shock tower 1, and the protruding portion is used to connect with the vehicle cabin. In addition, as shown in Figure 3 As shown in , the rear shock tower 1 is provided with a side plate arranged along its edge, so that the rear shock tower 1 has a good structural strength. In addition, the side plate extends to one side of the vehicle interior to improve the aesthetics of the rear shock tower 1 and also reduce the occupied space.

[0053] In addition, as a preferred embodiment, in this embodiment, in the left and right directions of the vehicle, Figure 1 and Figure 4 As shown in , the shock absorber mounting part and each swing arm mounting part are arranged on the side of the rear shock absorber tower 1 facing the outside of the vehicle, and a plurality of reinforcing ribs 104 are arranged on the side of the rear shock absorber tower 1 facing the inside of the vehicle. By arranging the reinforcing ribs 104 on the rear shock absorber tower 1, the structural strength of the rear shock absorber tower 1 can be increased, the reliability of the vehicle suspension installation in the vehicle body can be improved, and the overall rigidity of the vehicle body can also be improved. In addition, as a preferred embodiment, the reinforcing ribs 104 are connected to the above-mentioned side plates, and are multiple interlaced and connected, so as to better improve the structural strength of the rear shock absorber tower 1.

[0054] Specifically, combined with Figure 4 and Figure 5As shown in , the swing arm mounting parts of this embodiment are five and are arranged at intervals along the circumference of the through hole K. It is understandable that, in specific implementation, the number of swing arm mounting parts can be adjusted accordingly according to design requirements. In addition, as a specific embodiment, the shock absorber mounting part of this embodiment includes a shock absorber mounting boss 1011 arranged on the rear shock absorber tower 1, and the shock absorber mounting boss 1011 is provided with a shock absorber mounting hole. The shock absorber mounting boss 1011 is arranged on the above-mentioned protruding part, and in order to improve the installation stability of the shock absorber, as shown in FIG. Figure 4 As shown in , the shock absorber mounting bosses 1011 of each shock absorber mounting portion are two oppositely arranged.

[0055] In addition, as a further embodiment, Figure 4 and Figure 5 As shown in , the rear shock absorber tower 1 is provided with a shock absorber avoidance groove 101, and the shock absorber mounting boss 1011 is located in the shock absorber avoidance groove 101. The provision of the shock absorber avoidance groove 101 is not only conducive to the installation and arrangement of the shock absorber on the rear shock absorber tower 1, but also makes each shock absorber mounting boss 1011 located in the shock absorber avoidance groove 101, which also helps to reduce the protruding height of the shock absorber mounting boss 1011, reduce the overall volume of the rear shock absorber tower 1, and facilitate its arrangement in the vehicle.

[0056] In addition, as a further embodiment, in combination with Figure 4 As shown in , the rear shock absorber tower 1 is provided with a reinforcing rib 1012 connected to the shock absorber mounting boss 1011, and the reinforcing rib 1012 is arranged along the height direction of the rear shock absorber tower 1. The reinforcing rib 1012 is arranged one-to-one with the shock absorber mounting boss 1011. In this embodiment, by providing the reinforcing rib 1012 connected to the shock absorber mounting boss 1011 and arranged along the height direction of the rear shock absorber tower 1, the stiffness of the shock absorber mounting point can be increased, and the reliability of the shock absorber installation can be improved. In order to further improve the installation reliability of the shock absorber, the reinforcing rib 1012 of this embodiment is triangular, so as to utilize the high strength of the triangular structure to further improve the reinforcement effect.

[0057] Continue to refer to Figure 4 As shown in , each swing arm mounting part of this embodiment includes a swing arm mounting boss 1021 disposed on the rear shock absorber tower 1, and a swing arm mounting hole is provided on the swing arm mounting boss 1021. The swing arm mounting part of this embodiment adopts a swing arm mounting boss 1021 with a swing arm mounting hole disposed on the rear shock absorber tower 1, which has a simple structure, is easy to form, and is also conducive to the installation operation of the swing arm. In addition, in order to improve the installation firmness of the swing arm, as shown in FIG. Figure 1 As shown in , as a preferred embodiment, each swing arm mounting portion includes two swing arm mounting bosses 1021 arranged opposite to each other.

[0058] In addition, in order to further improve the use effect of the rear shock tower 1, as Figure 1 As shown in , as a further embodiment, a swing arm avoidance groove 102 is provided on the rear shock absorber tower 1, and a swing arm mounting boss 1021 is located in the swing arm avoidance groove 102. Such a design is not only conducive to the installation and arrangement of the swing arm on the rear shock absorber tower 1, but also helps to reduce the protruding height of the swing arm mounting boss 1021, which can reduce the overall volume of the rear shock absorber tower 1 and facilitate its arrangement in the vehicle.

[0059] Here, it should be noted that, in addition to setting the shock absorber avoidance groove 101 and the swing arm avoidance groove 102 at the same time as above, it is also possible to only set the shock absorber avoidance groove 101 according to design requirements, that is, in this case, the swing arm mounting boss 1021 protrudes toward the outside of the vehicle relative to the rear shock absorber tower 1. In addition, it is also possible to only set the swing arm avoidance groove 102 according to design requirements, that is, in this case, the shock absorber mounting boss 1011 protrudes toward the outside of the vehicle relative to the rear shock absorber tower 1. This setting will obviously increase the space occupied by the rear shock absorber tower 1 on the whole vehicle.

[0060] In addition, as a preferred embodiment, Figure 4 As shown in , each side rear shock tower 1 has a connection end protruding backwards, and the end of the connection end is provided with a connection groove 103, and the front end of the rear longitudinal beam 2 of each side rear cabin is connected to the connection groove 103 of the corresponding side. In this embodiment, by providing the connection groove 103 on the rear shock tower 1 and connecting the front end of the rear longitudinal beam 2 of the rear cabin to the connection groove 103, the connection between the rear longitudinal beam 2 of the rear cabin and the rear shock tower 1 can be facilitated, and the reliability of the connection between them can also be ensured.

[0061] Continue to refer to Figure 4 As shown in , as a preferred embodiment, the connection groove 103 has an upper connection wall 1031 and a lower connection wall 1032 arranged opposite to each other, and a side connection wall 1033 located on one side of the rear longitudinal beam 2 of the rear cabin. In addition, the upper connection wall 1031, the lower connection wall 1032 and the side connection wall 1033 are all connected to the rear longitudinal beam 2 of the rear cabin. With such an arrangement, the rear longitudinal beam 2 of the rear cabin can be connected to three sides of the connection groove 103, which is conducive to the end of the rear longitudinal beam 2 of the rear cabin entering the connection groove 103, and the reliability of the connection between the rear longitudinal beam 2 of the rear cabin and the rear shock tower 1 can also be ensured by supporting the rear longitudinal beam 2 of the rear cabin.

[0062] Furthermore, as a feasible implementation, at least one of the upper connecting wall 1031, the lower connecting wall 1032 and the side connecting wall 1033 is connected to the rear longitudinal beam 2 of the rear cabin by a riveting structure. Alternatively, at least one of the upper connecting wall 1031, the lower connecting wall 1032 and the side connecting wall 1033 is connected to the rear longitudinal beam 2 of the rear cabin by welding. In addition, in addition to these two connection schemes, at least one of the upper connecting wall 1031, the lower connecting wall 1032 and the side connecting wall 1033 can also be connected to the rear longitudinal beam 2 of the rear cabin by a riveting structure, and at the same time, at least one of the upper connecting wall 1031, the lower connecting wall 1032 and the side connecting wall 1033 can be connected to the rear longitudinal beam 2 of the rear cabin by welding.

[0063] In this embodiment, as a preferred embodiment, the upper connecting wall 1031, the lower connecting wall 1032 and the side connecting wall 1033 are connected to the rear longitudinal beam 2 of the rear cabin by riveting and welding at the same time, so as to ensure the firmness of the connection between the rear longitudinal beam 2 of the rear cabin and the connecting groove 103, that is, the rear shock tower 1, which is beneficial to improving the overall structural strength of the rear part of the vehicle body.

[0064] As a further embodiment, at least one of the upper connecting wall 1031 and the lower connecting wall 1032 is triangular. Figure 1 and Figure 4 As shown in , as a preferred embodiment, the upper connecting wall 1031 and the lower connecting wall 1032 of this embodiment are both triangular, so as to increase their own structural strength by taking advantage of the high strength of the triangular structure, thereby improving the connection strength between them and the rear longitudinal beam 2 of the rear cabin. In addition, as a preferred embodiment, Figure 1 and Figure 4 As shown in the figure, in the left and right direction of the vehicle, the side connecting wall 1033 is located on the side of the rear longitudinal beam 2 of the rear compartment facing the vehicle interior. Such arrangement can play a role of lateral support when the vehicle is hit sideways, which helps to improve the side collision response capability.

[0065] It is understandable that, in addition to setting the upper connecting wall 1031 and the lower connecting wall 1032 in a triangular shape, they can also be set in a rectangular or other shape according to design requirements. In addition, in addition to locating the side connecting wall 1033 on the side of the rear longitudinal beam 2 of the rear compartment facing the vehicle interior, it is also feasible to locate the side connecting wall 1033 on the side of the rear longitudinal beam 2 of the rear compartment facing the vehicle exterior.

[0066] In addition, as a preferred embodiment, the structure of the first crossbeam 3 of this embodiment is as follows: Figure 6As shown in , the first cross beam 3 has an end portion 302 connected to each side rear shock tower 1, and a middle portion 301 located between the end portions 302 on both sides. The powertrain suspension mounting bracket 5 is arranged on the middle portion 301, and the outline of each end portion 302 projected in the left and right direction of the whole vehicle is larger than the outline of the middle portion 301 projected in the left and right direction of the whole vehicle. In this embodiment, by making the projection outline of the end portion 302 of the first cross beam 3 larger than the projection outline of the middle portion 301, the larger cross-sectional size of the end portion of the first cross beam 3 can be used to increase the stability of the connection between it and the rear shock tower 1.

[0067] like Figure 6 As shown in , in order to further improve the lateral support effect of the first cross beam 3, a plurality of cavities arranged at intervals are formed on the end portion 302, and correspondingly, a cavity connected to some of the cavities is provided on the middle portion 301. Such an arrangement can also make the first cross beam 3 have a higher structural strength and better connection reliability with the rear shock tower 1.

[0068] In addition, combined Figure 1 and Figure 2 As shown in the figure, as a preferred embodiment, the second cross beam 4 of this embodiment is connected to the ends of the rear ends of the rear longitudinal beams 2 of the rear compartment on both sides. This design allows the second cross beam 4 to be used as a rear anti-collision beam at the rear of the vehicle body, thereby achieving multiple uses and giving full play to the setting effect of the rear anti-collision beam. Figure 7 As shown in the figure, as a preferred embodiment, the cross section of the rear longitudinal beam 2 of the rear compartment of this embodiment is rectangular, and its interior is divided into a plurality of cavities arranged at intervals along the vertical direction of the vehicle. Such a design can not only improve the structural strength of the rear longitudinal beam 2 of the rear compartment, but also facilitate the transmission of collision force.

[0069] At this time, in order to facilitate the connection between the second cross beam 4 and the rear longitudinal beam 2 of the rear cabin, the Figure 3 and Figure 7 As shown in FIG. 4 , a connecting frame 6 is provided at the front end of the second cross beam 4. An exemplary structure of the connecting frame 6 is as follows: Figure 8 As shown in , it includes a main board 601, and two side panels 602 arranged at the front end of the main board 601, and an insertion space for inserting the rear longitudinal beam 2 of the rear cabin is formed between the two side panels 602. In addition, in order to facilitate the connection between the side panels 602 and the main board 601 and the rear longitudinal beam 2 of the rear cabin, the side panels 602 are roughly "L" shaped, and this structure can also make the side panels 602 have good structural strength. In addition, the side panels 602 and the main board 601, the main board 601 and the second cross beam 4, and the second cross beam 4 and the rear longitudinal beam 2 of the rear cabin are connected by at least one of screw connection, riveting and welding.

[0070] Here, it should be noted that, in addition to connecting the second cross beam 4 to the ends of the rear ends of the rear compartment rear longitudinal beams 2 on both sides, it is also feasible to connect the second cross beam 4 between the rear compartment rear longitudinal beams 2 on both sides.

[0071] In addition, as a further embodiment, at least one of the rear longitudinal beams 2, the first cross beam 3 and the first cross beam 3 of the rear compartment on both sides adopts an extruded profile. Among them, in this embodiment, as a preferred embodiment, the rear longitudinal beams 2, the first cross beam 3 and the first cross beam 3 of the rear compartment on both sides all adopt an extruded profile, and can generally be made of extruded aluminum profiles. In this embodiment, the rear longitudinal beam 2 and each cross beam of the rear compartment adopt an extruded profile, which can facilitate the preparation of each beam body and ensure the structural strength of each beam body.

[0072] Of course, in addition to making the rear longitudinal beams 2 of the rear compartment on both sides, the first cross beam 3 and the first cross beam 3 all of them using extruded profiles, they can also be made using machining technology or other processes.

[0073] The rear vehicle body structure of this embodiment can increase the rigidity of the powertrain suspension mounting point by adopting the above structure, which helps to improve the stability of the powertrain layout in the vehicle and is beneficial to improving the quality of the entire vehicle.

[0074] In addition, the present embodiment also relates to a vehicle, in which the vehicle is provided with the above-mentioned rear vehicle body structure.

[0075] The vehicle of this embodiment has all the beneficial effects of the above-mentioned rear vehicle body structure, which will not be described in detail here.

[0076] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A vehicle body rear structure, characterized in that: It comprises rear shock absorbing towers (1) arranged on the left and right sides, a first crossbeam (3) connected between the rear shock absorbing towers (1) on the two sides, and rear longitudinal beams (2) of the rear cabin respectively connected to the rear parts of the rear shock absorbing towers (1) on each side; The rear shock absorber towers (1) on both sides are integrally formed, a powertrain suspension mounting bracket (5) is provided on the first cross beam (3), and a second cross beam (4) is connected between the rear longitudinal beams (2) of the rear cabin on both sides, and the first cross beam (3), the second cross beam (4), the rear shock absorber towers (1) on both sides and the rear longitudinal beams (2) of the rear cabin on both sides are connected to form an annular structure.

2. The vehicle body rear structure according to claim 1, characterized in that: The rear shock tower (1) on each side has a connection end protruding backwards, and a connection groove (103) is provided at the end of the connection end. The front end of the rear longitudinal beam (2) of the rear cabin on each side is connected to the connection groove (103) on the corresponding side.

3. The vehicle body rear structure according to claim 2, characterized in that: The connecting groove (103) comprises an upper connecting wall (1031) and a lower connecting wall (1032) arranged opposite to each other, and a side connecting wall (1033) located on one side of the rear longitudinal beam (2) of the rear cabin; The upper connecting wall (1031), the lower connecting wall (1032) and the side connecting wall (1033) are all connected to the rear longitudinal beam (2) of the rear cabin.

4. The rear vehicle body structure according to claim 3, characterized in that: At least one of the upper connecting wall (1031), the lower connecting wall (1032) and the side connecting wall (1033) is connected to the rear longitudinal beam (2) of the rear compartment via a riveted structure; and / or, At least one of the upper connecting wall (1031), the lower connecting wall (1032) and the side connecting wall (1033) is welded to the rear longitudinal beam (2) of the rear compartment.

5. The vehicle body rear structure according to claim 3, characterized in that: At least one of the upper connecting wall (1031) and the lower connecting wall (1032) is in a triangular shape; and / or, In the left-right direction of the entire vehicle, the side connecting wall (1033) is located on the side of the rear longitudinal beam (2) of the rear compartment facing the interior of the vehicle.

6. The vehicle body rear structure according to claim 1, characterized in that: The second cross beam (4) is connected to the ends of the rear ends of the rear longitudinal beams (2) of the rear compartment on both sides; and / or, At least one of the rear longitudinal beams (2) of the rear compartment, the first cross beam (3) and the second cross beam (4) on both sides is made of extruded profiles.

7. The vehicle body rear structure according to any one of claims 1 to 6, characterized in that: The rear shock absorber towers (1) on both sides are integrally cast and are annular in shape. Each of the rear shock absorber towers (1) is provided with a through hole (K) for the transmission shaft to pass through, a shock absorber mounting portion, and a plurality of swing arm mounting portions. The shock absorber mounting portion is located at the top of the rear shock absorber tower (1), and a plurality of swing arm mounting portions are arranged around the through hole (K).

8. The vehicle body rear structure according to claim 7, characterized in that: The shock absorber mounting portion comprises a shock absorber mounting boss (1011) arranged on the rear shock absorber tower (1), and a shock absorber mounting hole is provided on the shock absorber mounting boss (1011); Each of the swing arm mounting parts comprises a swing arm mounting boss (1021) arranged on the rear shock absorber tower (1), and a swing arm mounting hole is provided on the swing arm mounting boss (1021).

9. The vehicle body rear structure according to claim 8, characterized in that: The rear shock absorber tower (1) is provided with a reinforcing rib (1012) connected to the shock absorber mounting boss (1011), and the reinforcing rib (1012) is arranged along the height direction of the rear shock absorber tower (1).

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

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