Vehicle rear cabin lower structure and vehicle

Abstract

The utility model provides a vehicle rear cabin lower structure and a vehicle. The vehicle rear cabin lower structure comprises a first cross beam connected between the bottoms of rear shock absorption towers on the left side and the right side, and rear cabin lower longitudinal beam assemblies connected between the rear shock absorption towers on the sides and a vehicle cabin. Wherein each side rear cabin lower longitudinal beam assembly comprises a rear cabin lower longitudinal beam connected with the vehicle cabin and a connecting beam connected between the rear cabin lower longitudinal beam and the rear shock absorption tower, the connecting beam extends towards the upper rear portion and is connected to the middle of the rear shock absorption tower, and a second cross beam is connected between the rear cabin lower longitudinal beams on the two sides. According to the lower structure of the rear cabin of the vehicle, the first cross beam and the second cross beam are arranged, transverse supporting of the two cross beams can be utilized, the overall rigidity of the lower portion of the rear cabin can be improved, meanwhile, the connecting beam extends towards the upper rear portion, and rear collision force at the rear shock absorption tower can be transmitted in the direction pointing to the lower portion of the cabin conveniently; intruding of the rear cabin into the cabin can be reduced, and the rear collision safety can be improved.

Description

Technical Field

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

[0002] The low streamlined body is a car design feature that combines a low body with streamlined design elements. It can not only improve the performance and fuel efficiency of the vehicle, but also enhance the beauty and dynamism of the vehicle. Among them, the low body design helps to lower the center of gravity and enhance the stability and handling of the vehicle, while the streamlined body design changes or guides the airflow by making the body curve smoother, rounder and more fluid, making it easier for the oncoming air to pass through the body. However, the rear cabin of vehicles with low streamlined bodies still has the problem of low rigidity and large intrusion into the cabin during rear-end collisions, which is not conducive to improving rear-end collision safety. Utility Model Content

[0003] In view of this, the utility model aims to provide a lower structure of a vehicle rear cabin to reduce the intrusion of the rear cabin into the cabin during a rear-end collision and improve rear-end collision safety.

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

[0005] A vehicle rear cabin lower structure, comprising a first crossbeam connected between the bottoms of left and right rear shock absorber towers, and a rear cabin lower longitudinal beam assembly connected between the rear shock absorber towers on each side and the vehicle cabin;

[0006] The rear cabin lower longitudinal beam assembly on each side includes a rear cabin lower longitudinal beam connected to the vehicle cabin, and a connecting beam connected between the rear cabin lower longitudinal beam and the rear shock absorber tower, the connecting beam extends rearward and upward and is connected to the middle part of the rear shock absorber tower, and a second cross beam is connected between the rear cabin lower longitudinal beams on both sides.

[0007] Further, the first crossbeam and the second crossbeam are arranged in parallel; and / or,

[0008] The second cross beam is arranged close to the rear ends of the lower longitudinal beams of the rear compartment on both sides.

[0009] Furthermore, reinforcing longitudinal beams are respectively connected between the second cross beam and the bottoms of the rear shock towers on both sides.

[0010] Further, the front ends of the reinforcing longitudinal beams on both sides are arranged close to the middle of the second cross beam in the left-right direction; and / or,

[0011] Each of the reinforced longitudinal beams is connected to the second cross beam via a connecting bracket.

[0012] Further, the rear shock absorber towers on both sides are provided with connecting grooves, the rear end of the connecting beam on each side is connected to the connecting groove on the corresponding side, and the rear shock absorber tower and the connecting beam are connected by welding and / or riveting; and / or,

[0013] The rear ends of the lower longitudinal beams of the rear compartment on both sides are provided with insertion grooves, and the front ends of the connecting beams on each side are inserted into the insertion grooves on the corresponding sides.

[0014] Furthermore, a first connecting plate and / or a second connecting plate are connected between the first cross beam and the rear shock towers on each side;

[0015] The first connecting plate is arranged horizontally and connected between the first cross beam and the bottom of the rear shock tower;

[0016] The second connecting plate is arranged vertically and connected between the side of the first cross beam and the connecting boss on the inner side of the rear shock absorber tower, and the inner side of the rear shock absorber tower is the side of the rear shock absorber tower facing the inside of the vehicle in the left and right direction of the whole vehicle.

[0017] Furthermore, powertrain suspension mounting brackets are respectively provided on the lower longitudinal beams of the rear cabin on both sides, and the powertrain suspension mounting brackets are integrally formed on the lower longitudinal beams of the rear cabin.

[0018] Further, at least one of the first crossbeam, the second crossbeam and the connecting beam is made of extruded profile; and / or,

[0019] The rear cabin lower longitudinal beam is formed by casting.

[0020] Compared with the prior art, the utility model has the following advantages:

[0021] The lower structure of the rear cabin of the vehicle described in the utility model arranges a first cross beam between the rear shock-absorbing towers on both sides and a second cross beam between the lower longitudinal beams of the rear cabin on both sides. The lateral support of the two cross beams can be used to increase the overall rigidity of the lower part of the rear cabin. At the same time, the rearward and upward extension of the connecting beam is also beneficial to the transmission of the rear impact force at the rear shock-absorbing tower in the direction pointing to the bottom of the cabin, which can reduce the intrusion of the rear cabin into the cabin and help improve the rear impact safety.

[0022] In addition, setting the first crossbeam and the second crossbeam in parallel can provide better lateral support effect, which is beneficial to avoid the instability of the rear cabin structure during side collision; and setting the second crossbeam close to the rear end of the lower longitudinal beams of the rear cabin on both sides can leave a larger space between the second crossbeam and the cabin for other related vehicle parts. By setting the reinforced longitudinal beam, not only can the connection between the lower longitudinal beams of the rear cabin on each side and the rear shock tower be strengthened by the reinforced longitudinal beam, thereby improving the overall rigidity of the lower part of the rear cabin, but also it can increase the force transmission channel when the vehicle collides, which helps to improve the collision force transmission effect.

[0023] Secondly, by arranging the front ends of the reinforced longitudinal beams on both sides close to the middle of the second cross beam, the reinforced longitudinal beams on both sides can be arranged in an "eight" shape, which is beneficial to improving the reinforcement effect of the reinforced longitudinal beams; and the reinforced longitudinal beams are connected to the second cross beam through the connecting bracket, which can facilitate the connection between the reinforced longitudinal beams and the second cross beam.

[0024] By setting a connecting groove on the rear shock absorber tower, the connection between the connecting beam and the rear shock absorber tower can be facilitated, and the rear shock absorber tower and the connecting beam are connected by welding and riveting, which is easy to operate and can also ensure the connection strength; by setting an insertion groove at the rear end of the rear cabin lower longitudinal beam, the connection between the rear cabin lower longitudinal beam and the connecting beam can be facilitated, and the reliability of the connection between them can be increased.

[0025] In addition, by arranging the first connecting plate and the second connecting plate between the first cross beam and the rear shock absorber tower, the reliability of the connection between the first cross beam and the rear shock absorber tower can be increased, so that the first and second connecting plates are arranged horizontally and vertically respectively, and can also be strengthened in the horizontal and vertical directions at the same time, which can achieve a good connection strengthening effect.

[0026] In addition, by arranging the powertrain suspension mounting bracket on the lower longitudinal beam of the rear cabin, the installation arrangement of the powertrain in the rear cabin of the vehicle can be facilitated, and the reliability of the installation of the powertrain suspension mounting bracket can be ensured. The beam bodies are made of extruded profiles or cast, which can facilitate the preparation of the beam bodies and ensure their structural strength.

[0027] Another object of the present invention is to provide a vehicle, wherein the rear cabin of the vehicle is provided with the vehicle rear cabin lower structure as described above.

[0028] 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;

[0029] 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.

[0030] The vehicle described in the utility model can reduce the intrusion of the rear cabin into the cabin by providing the vehicle rear cabin lower structure as described above, which helps to improve rear collision safety.

[0031] In addition, 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 structural strength of the rear shock absorber tower can be increased by utilizing the high strength of the ring structure; at the same time, it is also conducive to the integrated design of the mounting structure on the shock absorber tower, which helps to reduce the difficulty of designing and preparing the mounting structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] 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:

[0033] Figure 1 This is a schematic structural diagram of the lower structure of the vehicle rear compartment according to an embodiment of the utility model;

[0034] Figure 2 It is a structural schematic diagram of the lower structure of the vehicle rear compartment according to an embodiment of the utility model from another perspective;

[0035] Figure 3 It is a structural schematic diagram of the lower structure of the vehicle rear compartment according to an embodiment of the utility model from another perspective;

[0036] Figure 4 It is a structural schematic diagram of the lower structure of the vehicle rear compartment according to an embodiment of the utility model from another perspective;

[0037] Figure 5 This is a schematic diagram of the structure of the lower longitudinal beam of the rear cabin according to an embodiment of the utility model;

[0038] Figure 6 This is a schematic structural diagram of the lower longitudinal beam of the rear cabin according to an embodiment of the utility model from another perspective;

[0039] Figure 7 This is a schematic diagram of the structure of the connecting beam according to an embodiment of the utility model;

[0040] Figure 8 This is a schematic diagram of the structure of the connecting bracket according to an embodiment of the utility model;

[0041] Fig. 9 It is a partial structural schematic diagram of the lower structure of the rear compartment of a vehicle according to an embodiment of the utility model;

[0042] Fig.10 It is a partial structural schematic diagram of the lower structure of the rear compartment of the vehicle according to the embodiment of the utility model at another viewing angle;

[0043] Fig.11 It is a structural schematic diagram of the rear shock tower according to an embodiment of the utility model;

[0044] Fig.12 It is a schematic structural diagram of the rear shock tower described in an embodiment of the utility model from another perspective.

[0045] Description of reference numerals:

[0046] 1. Rear shock tower; 2. Lower longitudinal beam of rear cabin; 3. First cross beam; 4. Second cross beam; 5. Connecting beam; 6. Strengthening longitudinal beam; 7. Connecting bracket; 8. First connecting plate; 9. Second connecting plate; 10. Vehicle cabin; K. Through hole;

[0047] 101, shock absorber avoidance groove; 1011, shock absorber mounting boss; 1012, reinforcement rib; 102, swing arm avoidance groove; 1021, swing arm mounting boss; 103, connecting groove; 104, connecting column; 105, reinforcement rib; 106, mounting column; 107, connecting boss;

[0048] 201, insertion slot; 202, powertrain suspension mounting frame; 2021, mounting plate; 2022, bottom plate; 2023, rib plate;

[0049] 701. Slot. DETAILED DESCRIPTION

[0050] 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.

[0051] 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.

[0052] 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.

[0053] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0054] The present embodiment relates to a lower structure of a vehicle rear cabin, including a first crossbeam 3 connected between the bottoms of the left and right rear shock towers 1, and a rear cabin lower longitudinal beam assembly connected between the rear shock towers 1 on each side and the vehicle cabin. The rear cabin lower longitudinal beam assembly on each side includes a rear cabin lower longitudinal beam 2 connected to the vehicle cabin 10, and a connecting beam 5 connected between the rear cabin lower longitudinal beam 2 and the rear shock tower 1, the connecting beam 5 extends rearward and upward and is connected to the middle of the rear shock tower 1, and a second crossbeam 4 is connected between the rear cabin lower longitudinal beams 2 on both sides.

[0055] The lower structure of the rear cabin of the vehicle in this embodiment can increase the overall rigidity of the lower part of the rear cabin by using the lateral support of the two crossbeams by arranging the first crossbeam 3 between the rear shock towers 1 on both sides and the second crossbeam 4 between the lower longitudinal beams 2 of the rear cabin on both sides. At the same time, by extending the connecting beam 5 backward and upward, it is also beneficial for the rear impact force at the rear shock tower 1 to be transmitted in the direction pointing to the lower part of the cabin, which can reduce the intrusion of the rear cabin into the cabin and help improve the safety of rear impact.

[0056] Based on the above overall introduction, an exemplary structure of the vehicle rear compartment lower structure of this embodiment is referred to as follows: Figures 1 to 3 As shown in , the first crossbeam 3 and the second crossbeam 4 of this embodiment are arranged in parallel. Such an arrangement can make the first crossbeam 3 and the second crossbeam 4 have a better lateral support effect, which is conducive to preventing the rear cabin structure from becoming unstable during a side collision. In addition, combined with Figure 1 and Figure 3 As shown in , as a preferred embodiment, the second cross beam 4 is arranged near the rear end of the lower longitudinal beams 2 of the rear compartment on both sides. With this design, a large space is left between the second cross beam 4 and the vehicle cabin 10 to facilitate other related vehicle components.

[0057] It should be noted that, in addition to arranging the first cross beam 3 and the second cross beam 4 in parallel, it is also feasible to form a certain angle between the two. In addition, in addition to arranging the second cross beam 4 close to the rear end of the rear cabin lower longitudinal beams 2 on both sides, the second cross beam 4 can also be arranged near the middle or front end of the rear cabin lower longitudinal beams 2 on both sides.

[0058] Here, in order to facilitate understanding of this embodiment, the structure of the rear compartment lower longitudinal beam 2 is first introduced, and based on the fact that the rear compartment lower longitudinal beam 2 is generally arranged symmetrically on the left and right of the vehicle, the following is combined with Figure 5 and Figure 6 Only one side of the rear compartment lower longitudinal beam 2 is shown in the figure. Specifically, a groove with a notch facing the outside of the vehicle is formed on the rear compartment lower longitudinal beam 2, and the groove extends along the length direction of the rear compartment lower longitudinal beam 2. In addition, in order to improve the structural strength of the rear compartment lower longitudinal beam 2, a plurality of staggered ribs are provided in the groove, and each rib is supported between the upper and lower side walls of the groove, thereby improving the strength of the rear compartment lower longitudinal beam 2 in the vertical direction of the whole vehicle.

[0059] In addition, as a further embodiment, a powertrain suspension mounting bracket 202 is respectively provided on the lower longitudinal beams 2 of the rear compartment on both sides, and the powertrain suspension mounting bracket 202 is integrally formed on the lower longitudinal beams 2 of the rear compartment. Figure 5 and Figure 6 As shown in , the powertrain suspension mounting bracket 202 of this embodiment includes two mounting plates 2021 arranged at intervals along the front-rear direction of the vehicle, and a bottom plate 2022 disposed between the bottoms of the two mounting plates 2021. In addition, to improve the mounting strength, a rib plate 2023 is disposed between each side mounting plate 2021 and the rear compartment lower longitudinal beam 2. The powertrain can be connected to the two mounting plates 2021 by fasteners such as bolts.

[0060] In addition, in order to facilitate connection with the connecting beam 5, as Figure 1 and Figure 5 As shown, the rear ends of the lower longitudinal beams 2 of the rear compartment on both sides are provided with insertion slots 201, and the front ends of the connecting beams 5 on each side are inserted into the insertion slots 201 on the corresponding side. Figure 1 and Figure 3 As shown in the figure, the front end of the connecting beam 5 is inserted into the insertion slot 201 and is welded to the edge of the insertion slot 201. The rear compartment lower longitudinal beam 2 of this embodiment adopts the above structure, which is not only conducive to lightweight design, but also has good structural strength, which is conducive to improving the overall strength and rigidity of the rear compartment side structure of the vehicle.

[0061] At this time, in order to further improve the overall strength and rigidity of the rear compartment side structure of the vehicle, Figure 7 As shown in , the interior of the connecting beam 5 is divided into a plurality of cavities, each of which extends along its length direction, so that the connecting beam 5 has a better structural strength, thereby being able to improve the supporting effect between the rear shock tower 1 and the lower longitudinal beam 2 of the rear cabin.

[0062] In addition, in order to facilitate the connection between the connecting beam 5 and the rear shock tower 1, as shown in FIG. Figure 1 As shown in , both sides of the rear shock tower 1 are provided with a connection groove 103, the rear end of the connection beam 5 on each side is connected to the connection groove 103 on the corresponding side, and the rear shock tower 1 and the connection beam 5 are connected by welding and riveting. It is worth mentioning that, in addition to providing the connection groove 103 on the rear shock tower 1 to connect with the connection beam 5, the connection groove 103 may not be provided on the rear shock tower 1, and the connection beam 5 may be butt-connected to the rear end surface of the rear shock tower 1. In addition, in addition to connecting the rear shock tower 1 and the connection beam 5 by welding and riveting at the same time, the two may also be connected by welding or riveting only.

[0063] As a further embodiment, in combination Figures 1 to 3As shown in the figure, reinforcing longitudinal beams 6 are respectively connected between the second cross beam 4 and the bottom of the rear shock towers 1 on both sides. In this embodiment, by providing the reinforcing longitudinal beams 6, not only can the connection between the lower longitudinal beams 2 of the rear cabin on each side and the rear shock towers 1 be strengthened by the reinforcing longitudinal beams 6, thereby improving the overall rigidity of the lower part of the rear cabin, but also a force transmission channel can be added when the vehicle collides, which helps to improve the collision force transmission effect.

[0064] As a preferred embodiment, the cross section of the reinforcing longitudinal beam 6 is rectangular for ease of processing and manufacturing. Of course, in specific implementation, the cross section of the reinforcing longitudinal beam 6 can also be set to a circular shape or other shapes. Figures 1 to 3 As shown in , as a further embodiment, the front ends of the two side reinforcing longitudinal beams 6 are arranged close to the middle of the left and right direction of the second cross beam 4. In this way, the two side reinforcing longitudinal beams 6 can be arranged in an "eight" shape, which is conducive to improving the reinforcing effect of the reinforcing longitudinal beams 6.

[0065] As a preferred embodiment, Figure 1 and Figure 2 As shown in the figure, each reinforced longitudinal beam 6 of this embodiment is connected to the second cross beam 4 through a connecting bracket 7. This design can facilitate the connection between the reinforced longitudinal beam 6 and the second cross beam 4. In order to improve the connection firmness between the reinforced longitudinal beam 6 and the second cross beam 4, as a preferred embodiment, Figure 8 As shown in FIG. , the structure of the connecting bracket 7 of this embodiment is as follows: Figure 8 As shown in , a slot 701 adapted to the front end of the reinforcing longitudinal beam 6 is formed at its rear end, and the front end is connected to the second cross beam 4.

[0066] In addition, in order to improve the connection effect between the reinforcing longitudinal beam 6 and the second cross beam 4, as a further implementation method, the cross section of the connecting bracket 7 is gradually increased from the back to the front. In this way, the connection area between the connecting bracket 7 and the second cross beam 4 can be increased, and the two are specifically connected by bolts. At the same time, the front end of the reinforcing longitudinal beam 6 is inserted into the slot 701 and welded to the connecting bracket 7, wherein the connection method between the connecting bracket 7 and the reinforcing longitudinal beam 6 and the second cross beam 4 can be adjusted according to design requirements. In addition, in this embodiment, in order to further improve the connection strength, such as Figure 8 As shown in , a plurality of ribs are provided on the connecting bracket 7 to further improve the structural strength of the connecting bracket 7 , thereby improving the connection strength between the reinforcing longitudinal beam 6 and the second cross beam 4 .

[0067] Combination Figures 1 to 3 ,as well as Fig. 9 and Fig.10As shown in , as a preferred embodiment, the cross section of the first cross beam 3 of this embodiment is flat, and the cross section is roughly in the shape of a long strip extending along the front-to-back direction of the vehicle. This design can not only increase the connection area between the first cross beam 3 and the rear shock tower 1, so as to better increase the overall rigidity of the rear part of the vehicle body. At the same time, it can also fully reduce the space occupied by the first cross beam 3 in the upper and lower directions of the vehicle, which is conducive to the installation of other components on the vehicle body.

[0068] In order to further enhance the lateral support function of the first crossbeam 3, continue to refer to Figure 6 and Figure 7 As shown in , a plurality of partition ribs are arranged in the first cross beam 3, and the partition ribs divide the interior of the first cross beam 3 into a plurality of sub-cavities arranged in sequence along the front-rear direction of the vehicle. Such an arrangement not only makes the first cross beam 3 have a good structural strength, but also can further improve the overall rigidity of the rear part of the vehicle body.

[0069] Combination Figure 1 , Fig. 9 and Fig.10 As shown, in this embodiment, as a further implementation, a first connecting plate 8 and a second connecting plate 9 are connected between the first cross beam 3 and each side rear shock tower 1. The first connecting plate 8 is arranged horizontally and connected between the first cross beam 3 and the bottom of the rear shock tower 1. Specifically, Figure 6 and Figure 7 As shown in FIG. 1 , as a preferred embodiment, the first connecting plate 8 of this embodiment is triangular in shape, so as to utilize the high strength of the triangular structure to further increase its connection strengthening capability.

[0070] In addition, in order to facilitate the connection between the first connecting plate 8 and the rear shock tower 1, as shown in FIG. Fig. 9 and 10 As shown in , a downwardly extending mounting post 106 is provided at the bottom of the rear shock tower 1, and the first connecting plate 8 is connected between the mounting post 106 and the bottom of the first cross beam 3. Moreover, as a specific embodiment, a threaded hole is provided on the mounting post 106, one end of the first connecting plate 8 is welded to the bottom of the first cross beam 3, and the other end is screwed to the mounting post 106 by bolts.

[0071] Here, it should be noted that the shape of the first connecting plate 8 is not limited to the triangle shown in the figure. In specific implementation, the first connecting plate 8 can be set to a rectangular, circular or other shape according to design requirements. In addition, the connection shape between the first connecting plate 8 and the first crossbeam 3 and the mounting column 106 is not limited to the above method, and it can also be adjusted according to design requirements.

[0072] In addition, combined Figure 1 and Fig.12As shown in , the second connecting plate 9 of this embodiment is arranged vertically and connected between the side of the first cross beam 3 and the connecting boss 107 on the inner side of the rear shock absorber tower 1, and the inner side of the rear shock absorber tower 1 is the side of the rear shock absorber tower 1 facing the inside of the vehicle in the left-right direction of the vehicle. Figure 4 As shown in , as a preferred embodiment, the second connecting plate 9 of this embodiment is triangular in shape, so as to utilize the high strength of the triangular structure to further increase its connection strengthening capability. In addition, in order to facilitate the connection with the second connecting plate 9, a mounting block protruding toward the inner side of the vehicle is provided on the rear shock tower 1, and the top end of the second connecting plate 9 is screwed to the mounting block, and the bottom end thereof is riveted to the first cross beam 3 by rivets.

[0073] Here, it should be noted that the shape of the second connecting plate 9 is not limited to the triangle shown in the figure. In specific implementation, the second connecting plate 9 can be set to a rectangular, circular or other shape according to design requirements. In addition, the connection shape between the second connecting plate 9 and the first crossbeam 3 and the mounting column 106 is not limited to the above-mentioned method, and it can also be adjusted according to design requirements. In addition, it should also be mentioned that in addition to designing the first connecting plate 8 and the second connecting plate 9 at the same time, only the first connecting plate 8 or the second connecting plate 9 can be set according to design requirements.

[0074] In addition, as a further embodiment, at least one of the first crossbeam 3, the second crossbeam 4 and the connecting beam 5 is made of extruded profile. As a preferred embodiment, the first crossbeam 3, the second crossbeam 4 and the connecting beam 5 of this embodiment are all made of extruded profile. This design allows each crossbeam and the connecting beam 5 to be made of extruded profile, which is convenient for preparation and can also ensure its structural strength. Moreover, as a preferred embodiment, the first crossbeam 3, the second crossbeam 4 and the connecting beam 5 of this embodiment can generally be made of extruded aluminum profile. It should be noted that in addition to making the first crossbeam 3, the second crossbeam 4 and the connecting beam 5 all of extruded profiles, they can also be made by other conventional methods such as machining processes.

[0075] In addition, as a preferred embodiment, the rear compartment lower longitudinal beam 2 of this embodiment is cast to facilitate preparation and ensure structural strength. Of course, in addition to casting the rear compartment lower longitudinal beam 2, other conventional methods such as machining can also be used.

[0076] The lower structure of the vehicle rear compartment of the present embodiment can reduce the intrusion of the rear compartment into the vehicle cabin 10 by adopting the above structure, which helps to improve rear collision safety.

[0077] In addition, the present embodiment also relates to a vehicle, in which the rear cabin of the vehicle is provided with the above vehicle rear cabin lower structure.

[0078] Among them, as a preferred embodiment, combined with Figure 1 and Fig.11 and Fig.12 As shown in , the rear shock absorber towers 1 on both sides of this embodiment are integrally cast, and are annular, and are respectively 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 on each rear shock absorber tower 1. 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.

[0079] The rear shock absorber tower 1 of this embodiment is cast, which not only can utilize the characteristics of the casting molding process to facilitate the preparation of the rear shock absorber tower 1 and reduce the preparation cost. In addition, the structural strength of the rear shock absorber tower 1 can be ensured, and the weight of the rear shock absorber tower 1 can be reduced, which is beneficial to the lightweight design of the vehicle. In the specific implementation, the rear shock absorber tower 1 can generally be cast aluminum.

[0080] Specifically, combined with Fig.11 and Fig.12 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 10. In addition, as shown in Fig.12 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 door to improve the aesthetics of the rear shock tower 1 and also reduce the occupied space.

[0081] In addition, as a preferred embodiment, in this embodiment, in the left and right directions of the vehicle, Fig.11 and Fig.12 As shown in the figure, the middle part of the front end of the rear shock absorber tower 1 is provided with the above-mentioned connecting groove 103 for connecting with the connecting beam 5. In addition, 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 105 are arranged on the side of the rear shock absorber tower 1 facing the inside of the vehicle. By arranging the reinforcing ribs 105 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.

[0082] Furthermore, as a preferred embodiment, the reinforcing ribs 105 are connected to the side plates and are multiple and interwoven, so as to improve the structural strength of the rear shock tower 1. In addition, in order to facilitate connection with the reinforcing longitudinal beam 6, as shown in FIG. Fig.11 As shown in , a connecting column 104 is provided at the bottom of the rear shock tower 1 , and the connecting columns 104 are two spaced apart, and the rear end of the reinforcing longitudinal beam 6 is connected to the connecting column 104 .

[0083] Specifically, combined with Fig.11 and Fig.12As 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 1 As shown in , the shock absorber mounting bosses 1011 of each shock absorber mounting portion are two oppositely arranged.

[0084] In addition, as a further embodiment, Fig.11 and Fig.12 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 avoidance groove 101, reduce the overall volume of the rear shock absorber tower 1, and facilitate its arrangement in the vehicle.

[0085] In addition, as a further embodiment, in combination with Fig.11 and Fig.12 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.

[0086] Continue to refer to Fig.11 and Fig.12 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.

[0087] In addition, in order to further improve the use effect of the rear shock tower 1, as Fig.11 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.

[0088] 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, only the shock absorber avoidance groove 101 can be set according to design requirements, that is, in this case, the swing arm mounting boss 1021 protrudes to the side outside the vehicle relative to the swing arm mounting boss 1021. In addition, only the swing arm avoidance groove 102 can be set according to design requirements, that is, in this case, the shock absorber mounting boss 1011 protrudes to the side outside the vehicle relative to the swing arm mounting boss 1021. This setting will obviously increase the space occupied by the swing arm mounting boss 1021 on the entire vehicle.

[0089] The vehicle of this embodiment can reduce the intrusion of the rear compartment into the cabin by providing the vehicle rear compartment lower structure as described above, which helps to improve rear collision safety.

[0090] 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 rear compartment lower structure, characterized in that: It comprises a first cross beam (3) connected between the bottoms of the left and right rear shock absorber towers (1), and a rear cabin lower longitudinal beam assembly connected between the rear shock absorber towers (1) on each side and the vehicle cabin (10); The rear cabin lower longitudinal beam assembly on each side comprises a rear cabin lower longitudinal beam (2) connected to the vehicle cabin, and a connecting beam (5) connected between the rear cabin lower longitudinal beam (2) and the rear shock absorber tower (1), wherein the connecting beam (5) extends rearward and upward and is connected to the middle of the rear shock absorber tower (1), and a second cross beam (4) is connected between the rear cabin lower longitudinal beams (2) on both sides.

2. The vehicle rear compartment lower structure according to claim 1, characterized in that: The first crossbeam (3) and the second crossbeam (4) are arranged in parallel; and / or, The second cross beam (4) is arranged close to the rear ends of the rear compartment lower longitudinal beams (2) on both sides.

3. The vehicle rear compartment lower structure according to claim 1, characterized in that: Reinforced longitudinal beams (6) are respectively connected between the second cross beam (4) and the bottoms of the rear shock towers (1) on both sides.

4. The vehicle rear compartment lower structure according to claim 3, characterized in that: The front ends of the reinforcing longitudinal beams (6) on both sides are arranged close to the middle of the second cross beam (4) in the left-right direction; and / or, Each of the reinforcing longitudinal beams (6) is connected to the second cross beam (4) via a connecting bracket (7).

5. The vehicle rear compartment lower structure according to claim 1, characterized in that: The rear shock absorbing towers (1) on both sides are provided with connection grooves (103), the rear end of the connection beam (5) on each side is connected to the connection groove (103) on the corresponding side, and the rear shock absorbing tower (1) and the connection beam (5) are connected by welding and / or riveting; and / or, The rear ends of the rear compartment lower longitudinal beams (2) on both sides are provided with insertion grooves (201), and the front ends of the connecting beams (5) on each side are inserted into the insertion grooves (201) on the corresponding side.

6. The vehicle rear compartment lower structure according to claim 1, characterized in that: A first connecting plate (8) and / or a second connecting plate (9) are connected between the first cross beam (3) and the rear shock tower (1) on each side; The first connecting plate (8) is arranged horizontally and connected between the first cross beam (3) and the bottom of the rear shock tower (1); The second connecting plate (9) is arranged vertically and connected between the side of the first cross beam (3) and the connecting boss (107) on the inner side of the rear shock absorber tower (1), and the inner side of the rear shock absorber tower (1) is the side of the rear shock absorber tower (1) facing the inside of the vehicle in the left-right direction of the vehicle.

7. The vehicle rear compartment lower structure according to claim 1, characterized in that: Powertrain suspension mounting brackets (202) are respectively provided on the rear cabin lower longitudinal beams (2) on both sides, and the powertrain suspension mounting brackets (202) are integrally formed on the rear cabin lower longitudinal beams (2).

8. The vehicle rear compartment lower structure according to any one of claims 1 to 7, characterized in that: At least one of the first crossbeam (3), the second crossbeam (4) and the connecting beam (5) is made of extruded profile; and / or, The rear cabin lower longitudinal beam (2) is cast.

9. A vehicle, characterized in that: The vehicle rear compartment lower structure according to any one of claims 1 to 8 is provided in the rear compartment of the vehicle.

10. The vehicle according to claim 9, characterized in that: The rear shock absorbing towers (1) on both sides are integrally cast and are annular in shape, and each rear shock absorbing tower (1) is provided with a through hole (K) for the transmission shaft to pass through, and 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).

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