Vehicle and rear cabin frame structure thereof

Abstract

The utility model provides a vehicle and a rear cabin frame structure thereof. The rear cabin frame structure of the vehicle comprises rear shock absorption towers arranged on the left side and the right side respectively, and an upper cross beam, a middle cross beam and a lower cross beam which are connected between the rear shock absorption towers on the two sides. The rear shock absorption towers on the two sides are integrally formed, the upper cross beam is connected between the tops of the rear shock absorption towers on the two sides, the lower cross beam is connected between the bottoms of the rear shock absorption towers on the two sides, and the middle cross beam is located between the upper cross beam and the lower cross beam. The upper cross beam, the middle cross beam and the lower cross beam are connected through the rear shock absorption towers on the two sides to form a plurality of annular structures. According to the vehicle rear cabin frame structure, the upper cross beam, the middle cross beam and the lower cross beam are arranged between the rear shock absorption towers on the two sides, the rigidity of the rear portion of the vehicle body can be improved, meanwhile, through connection of the rear shock absorption towers on the two sides, a plurality of annular structures are formed between the cross beams, and the rigidity of the rear portion of the vehicle body can be improved by means of the characteristic that the annular structures are large in strength. Therefore, the collision force can be transmitted and dispersed, and the collision safety 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 rear cabin frame structure. Meanwhile, the utility model also relates to a vehicle provided with the vehicle rear cabin frame structure. Background Art

[0002] In existing vehicles, especially those with rear engines, there is generally no lateral connection between the rear shock towers on both sides of the rear of the vehicle body, or they are indirectly connected by means of a crossbeam between the longitudinal beams at the rear of the vehicle body. This not only reduces the rigidity of the rear of the vehicle body, but also makes the collision force transmission channel relatively single when the vehicle collides, which is not conducive to the dispersion of collision force transmission, thereby limiting the improvement of the safety of the entire vehicle. Utility Model Content

[0003] In view of this, the utility model aims to propose a vehicle rear cabin frame structure to increase the rigidity of the rear part of the vehicle body and help to transmit and disperse the collision force.

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

[0005] A vehicle rear cabin frame structure, comprising rear shock absorbing towers arranged on left and right sides, and an upper crossbeam, a middle crossbeam and a lower crossbeam connected between the rear shock absorbing towers on both sides;

[0006] The rear shock absorber towers on both sides are integrally formed, and the upper cross beam is connected between the tops of the rear shock absorber towers on both sides, the lower cross beam is connected between the bottoms of the rear shock absorber towers on both sides, and the middle cross beam is located between the upper cross beam and the lower cross beam;

[0007] The upper cross beam, the middle cross beam and the lower cross beam are connected to the rear shock towers on both sides to form a plurality of annular structures.

[0008] 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;

[0009] 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.

[0010] 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;

[0011] 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.

[0012] 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.

[0013] Furthermore,

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

[0015] The first connecting plate is arranged horizontally and connected between the lower cross beam and the bottom of the rear shock absorber tower, and a swing arm mounting portion is provided at a connection position between the rear shock absorber tower and the first connecting plate;

[0016] The second connecting plate is arranged vertically and connected between the side of the lower 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] Further, the upper cross beam is connected to the top surface of the rear shock absorbing tower on each side, and / or the lower cross beam is connected to the bottom surface of the rear shock absorbing tower on each side.

[0018] Furthermore, a powertrain suspension mounting bracket is provided on the middle cross beam.

[0019] Furthermore, the rear shock towers on both sides are provided with connecting grooves, and the ends of the middle cross beam are embedded in the connecting grooves; and / or,

[0020] The center cross beam has end portions connected to the rear shock towers on each side, and a middle portion located between the end portions on both sides. The powertrain suspension mounting bracket is arranged on the middle portion, and the contour of each end portion projected in the left and right direction of the whole vehicle is larger than the contour of the middle portion projected in the left and right direction of the whole vehicle.

[0021] Furthermore, at least one of the upper crossbeam, the middle crossbeam and the lower crossbeam is made of extruded profile.

[0022] Compared with the prior art, the utility model has the following advantages:

[0023] The vehicle rear cabin frame structure described in the utility model can provide sufficient lateral support between the rear shock-absorbing towers on both sides by arranging upper, middle and lower three cross beams between the rear shock-absorbing towers on both sides, thereby improving the rigidity of the rear part of the vehicle body. At the same time, by connecting the rear shock-absorbing towers on both sides, a plurality of annular structures are formed between the cross beams, and the high strength of the annular structure can be utilized to increase the rigidity of the rear part of the vehicle body, which helps to disperse the collision force and is beneficial to improving the collision safety of the whole vehicle.

[0024] In addition, by making the rear shock absorber tower annular and arranging the shock absorber mounting part and the swing arm mounting part thereon, the structural strength of the rear shock absorber tower can be increased by utilizing the high strength of the annular structure, and it is also conducive to realizing 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. The shock absorber mounting part and the swing arm mounting part use mounting bosses with mounting holes arranged on the rear shock absorber tower, which have a simple structure, are easy to form, and are also conducive to the installation operation of the shock absorber and the swing arm.

[0025] Secondly, 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, and the reliability of the shock absorber installation can be improved. By providing a first connecting plate and a second connecting plate between the lower cross beam and the rear shock absorber tower, the reliability of the connection between the lower 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 longitudinal directions at the same time, which can achieve a good connection reinforcement effect; and, by making the connection position of the first connecting plate and the rear shock absorber tower close to one of the swing arm mounting parts, the stiffness of the swing arm mounting point can also be increased, and the stability of the swing arm installation can be improved.

[0026] In addition, the upper and lower cross beams are connected to the top and bottom surfaces of the rear shock tower, respectively, which is conducive to the arrangement of the upper and lower cross beams and the connection between the upper and lower cross beams and the rear shock tower, and is also conducive to avoiding surrounding parts and reducing the difficulty of arranging vehicle parts. By arranging a powertrain suspension mounting bracket on the middle cross beam, it is convenient to realize the arrangement of the powertrain in the body of the rear-mounted model.

[0027] In addition, by providing a connection groove on the rear shock tower and embedding the end of the middle cross beam into the connection groove, the reliability of the connection between the middle cross beam and the rear shock towers on both sides can be increased; and by making the projection contour of the middle end portion of the middle cross beam larger than the projection contour of the middle portion, the larger cross-sectional size of the end portion of the middle cross beam can be used to increase the stability of the connection with the rear shock tower. Using extruded profiles for each cross beam can facilitate its preparation and ensure its structural strength.

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

[0029] The vehicle described in the utility model has all the beneficial effects of the above-mentioned vehicle rear cabin frame 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 structural schematic diagram of a vehicle rear cabin frame structure according to an embodiment of the utility model;

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

[0033] Figure 3 It is a structural schematic diagram of the vehicle rear cabin frame 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 It is a partial structural schematic diagram of the vehicle rear cabin frame structure according to an embodiment of the utility model;

[0037] Figure 7 It is a partial structural schematic diagram of the vehicle rear cabin frame structure according to an embodiment of the utility model at another viewing angle;

[0038] Figure 8 This is a schematic structural diagram of the middle cross beam described in an embodiment of the utility model;

[0039] Fig. 9 It is a structural schematic diagram of a powertrain suspension mounting bracket according to an embodiment of the utility model;

[0040] Fig.10 It is a schematic structural diagram of the powertrain suspension mounting bracket described in an embodiment of the utility model from another perspective.

[0041] Description of reference numerals:

[0042] 1. Rear shock tower; 2. Upper crossbeam; 3. Middle crossbeam; 4. Lower crossbeam; 5. First connecting plate; 6. Second connecting plate; 7. Powertrain suspension mounting bracket; K. Through hole;

[0043] 101, shock absorber avoidance groove; 1011, shock absorber mounting boss; 1012, reinforcement rib; 102, swing arm avoidance groove; 1021, swing arm mounting boss; 103, front mounting groove; 104, rear mounting groove; 105, reinforcement rib; 106, mounting column; 107, connecting groove; 108, connecting boss;

[0044] 301, middle part; 302, end part;

[0045] 701. Connecting ear; 702. Groove. DETAILED DESCRIPTION

[0046] 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.

[0047] 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.

[0048] 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.

[0049] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0050] In view of the fact that in existing rear-engine vehicles, the rear shock towers 1 on both sides of the rear of the vehicle body are generally not horizontally connected, or are indirectly connected by means of a crossbeam between the longitudinal beams at the rear of the vehicle body, which not only reduces the rigidity of the rear of the vehicle body, but also makes the collision force transmission channel relatively single when the vehicle collides. This embodiment specifically proposes a new type of vehicle rear cabin frame structure, which includes rear shock towers 1 arranged on the left and right sides, and an upper crossbeam 2, a middle crossbeam 3 and a lower crossbeam 4 connected between the rear shock towers 1 on both sides.

[0051] The rear shock towers 1 on both sides are integrally formed, and the upper cross beam 2 is connected between the tops of the rear shock towers 1 on both sides, the lower cross beam 4 is connected between the bottoms of the rear shock towers 1 on both sides, and the middle cross beam 3 is located between the upper cross beam 2 and the lower cross beam 4. In addition, the upper cross beam 2, the middle cross beam 3 and the lower cross beam 4 are connected to the rear shock towers 1 on both sides to form a plurality of annular structures.

[0052] The vehicle rear cabin frame structure of this embodiment can provide sufficient lateral support between the rear shock towers 1 on both sides by arranging the upper, middle and lower three cross beams between the rear shock towers 1 on both sides, thereby improving the rigidity of the rear part of the vehicle body. At the same time, by connecting the rear shock towers 1 on both sides, a plurality of annular structures are formed between the cross beams, and the high strength of the annular structure can be used to increase the rigidity of the rear part of the vehicle body, which helps to disperse the collision force and improve the collision safety of the whole vehicle.

[0053] Based on the above overall introduction, an exemplary structure of the vehicle rear cabin frame structure of this embodiment is referred to as Figures 1 to 3 As shown in the figure, only the improved parts of this embodiment are shown, and other parts can refer to the prior art. And, in order to further increase the rigidity of the rear part of the vehicle body, Figure 1 As shown in the figure, the upper cross beam 2 and the lower cross beam 4 are arranged correspondingly in the vertical direction of the whole vehicle, and the middle cross beam 3 protrudes toward the rear side of the vehicle relative to the upper cross beam 2 and the lower cross beam 4. Since the upper cross beam 2, the lower cross beam 4 and the middle cross beam 3 are all connected to the rear shock towers 1 on both sides, here, in order to facilitate understanding of this embodiment, the structure of the rear shock tower 1 is now introduced.

[0054] Combination Figure 3 and Figure 4 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. Moreover, 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.

[0055] In this embodiment, by making the rear shock tower 1 integrally formed and annular, and arranging the shock absorber mounting portion and the swing arm mounting portion on the rear shock tower 1, not only can the strength of the shock tower structure be increased by utilizing the high strength of the annular structure, but it can also facilitate the preparation of the shock tower 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.

[0056] Moreover, the rear shock absorber tower 1 of this embodiment is integrally cast, which not only can utilize the characteristics of the casting process to facilitate the preparation of the rear shock absorber tower 1 and reduce the preparation cost, but also can ensure the structural strength of the rear shock absorber tower 1, and is conducive to achieving the weight reduction of the rear shock absorber tower 1, which is conducive to the lightweight design of the vehicle. In the specific implementation, the rear shock absorber tower 1 can generally be cast aluminum.

[0057] Specifically, combined with Figure 4 and Figure 5As 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 Figure 4 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.

[0058] In addition, as a preferred embodiment, in this embodiment, in the left and right directions of the vehicle, Figure 4 and Figure 5 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 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. In addition, as a preferred embodiment, the reinforcing ribs 105 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.

[0059] Specifically, combined with Figure 1 and Figure 4 As 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 FIG. 1 , there are two shock absorber mounting bosses 1011 arranged opposite to each other.

[0060] In addition, as a further embodiment, Figure 1 and Figure 4 As shown in , a shock absorber avoidance groove 101 is provided on the rear shock absorber tower 1, and a 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 shock absorber tower, but also allows each mounting boss to be located in the avoidance groove, which helps to reduce the protruding height of the mounting boss, reduce the overall volume of the shock absorber tower, and facilitate its arrangement in the vehicle.

[0061] Continue to refer to Figure 1 and Figure 4As 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.

[0062] In addition, in order to further improve the use effect of the rear shock tower 1, as Figure 4 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 mounting boss, which can reduce the overall volume of the rear shock absorber tower 1 and facilitate its arrangement in the vehicle.

[0063] 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.

[0064] In addition, combined with Figure 1 and Figure 4 As shown in , in order to facilitate the connection between the rear shock absorber tower 1 and the rear cabin in front of it, two front mounting grooves 103 arranged vertically and spaced apart are provided at the front end of the rear shock absorber tower 1. Correspondingly, a rear mounting groove 104 is provided at the rear end of the rear shock absorber tower 1 to facilitate the connection between the rear shock absorber tower 1 and the longitudinal beam behind it. In addition, as shown in Figure 4 and Figure 5 As shown in , as a further embodiment, connection grooves 107 are provided on the rear shock towers 1 on both sides, and the ends of the middle cross beam 3 are embedded in the connection grooves 107 .

[0065] In this embodiment, by providing a connection groove 107 on the rear shock tower 1, the end of the middle cross beam 3 is embedded in the connection groove 107, which can increase the reliability of the connection between the middle cross beam 3 and the rear shock towers 1 on both sides. Figure 5 As shown in , in order to further improve the connection strength of the middle cross beam 3, a plurality of reinforcing ribs 105 arranged in a staggered manner are provided in the connection groove 107 to improve the structural strength of this part of the rear shock tower 1, thereby improving the connection strength between the rear shock tower 1 and the middle cross beam 3.

[0066] In addition, as a further embodiment, in combination with Figure 1 and 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.

[0067] As a preferred embodiment, at least one of the upper cross beam 2, the middle cross beam 3 and the lower cross beam 4 is made of extruded profile. In this way, in this embodiment, each cross beam is made of extruded profile, which is convenient for its preparation and can also ensure its structural strength. In addition, as a preferred embodiment, the upper cross beam 2, the middle cross beam 3 and the lower cross beam 4 of this embodiment are all made of extruded profile, and generally extruded aluminum profile can be used. It should be noted that in addition to making the upper cross beam 2, the middle cross beam 3 and the lower cross beam 4 all made of extruded profile, they can also be made by machining technology.

[0068] Combination Figures 1 to 3 As shown in , as a preferred embodiment, the upper crossbeam 2 is connected to the top surface of the rear shock tower 1 on each side, and at the same time, the lower crossbeam 4 is connected to the bottom surface of the rear shock tower 1 on each side. Such a configuration facilitates the connection between the upper and lower crossbeams 4 and the rear shock tower 1, and is also conducive to avoiding surrounding components and reducing the difficulty of arranging the components of the whole vehicle. Of course, in addition to connecting the upper crossbeam 2 to the top surface of the rear shock tower 1 on each side, it can also be connected to the side of the rear shock tower 1. Similarly, in addition to connecting the lower crossbeam 4 to the bottom surface of the rear shock tower 1 on each side, it can also be connected to the side of the rear shock tower 1. In addition, in order to facilitate processing and manufacturing, the cross-section of the upper crossbeam 2 of this embodiment is rectangular. Of course, in addition to setting the cross-section of the upper crossbeam 2 to a rectangular shape, it is also feasible to set it to a circular shape or other shapes.

[0069] As a preferred embodiment, Figure 6 and Figure 7 As shown in , the cross section of the lower cross beam 4 of this embodiment is flat, and the cross section is roughly in the shape of a long strip extending along the front-rear direction of the vehicle. This design can not only increase the connection area between the lower cross beam 4 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 lower cross beam 4 in the upper and lower directions of the vehicle, which is conducive to the installation of other components on the vehicle body.

[0070] In order to further improve the lateral support function of the lower cross beam 4, continue to refer to Figure 6 and Figure 7 As shown in , a plurality of partition ribs are provided in the lower cross beam 4, which divide the interior of the lower cross beam 4 into a plurality of sub-cavities arranged in sequence along the front-rear direction of the vehicle. Such a configuration not only makes the lower cross beam 4 have a better structural strength, but also can further increase the overall rigidity of the rear part of the vehicle body.

[0071] Combination Figures 3 to 7 As shown in , in this embodiment, as a further implementation, a first connecting plate 5 and a second connecting plate 6 are connected between the lower cross beam 4 and each side rear shock tower 1. The first connecting plate 5 is arranged horizontally and connected between the lower cross beam 4 and the bottom of the rear shock tower 1, and a swing arm mounting portion is provided at the connection position between the rear shock tower 1 and the first connecting plate 5. Specifically, as Figure 6 and Figure 7 As shown in FIG. 1 , as a preferred embodiment, the first connecting plate 5 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.

[0072] In addition, in order to facilitate the connection between the first connecting plate 5 and the rear shock tower 1, as shown in FIG. Figure 6 and Figure 7 As shown in FIG, a downwardly extending mounting column 106 is provided on the swing arm mounting boss 1021 at the bottom of the rear shock tower 1, and the first connecting plate 5 is connected between the mounting column 106 and the bottom of the lower cross beam 4. Moreover, as a specific embodiment, a threaded hole is provided on the mounting column 106, one end of the first connecting plate 5 is welded to the bottom of the lower cross beam 4, and the other end is screwed to the mounting column 106 by bolts.

[0073] Here, it should be noted that the shape of the first connecting plate 5 is not limited to the triangle shown in the figure. In specific implementation, the first connecting plate 5 can be set to a rectangular, circular or other shape according to design requirements. In addition, the connection shape between the first connecting plate 5 and the lower cross beam 4 and the mounting column 106 is not limited to the above method, and it can also be adjusted according to design requirements.

[0074] In addition, combined Figure 4 and Figure 7 As shown in , the second connecting plate 6 of this embodiment is arranged vertically and connected between the side of the lower cross beam 4 and the connecting boss 108 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 4As shown in , as a preferred embodiment, the second connecting plate 6 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, to facilitate connection with the second connecting plate 6, the connecting boss 108 protrudes toward the inner side of the vehicle, the top end of the second connecting plate 6 is screwed to the connecting boss 108, and the bottom end thereof is riveted to the lower cross beam 4 by rivets.

[0075] Here, it should be noted that the shape of the second connecting plate 6 is not limited to the triangle shown in the figure. In specific implementation, the second connecting plate 6 can be set to a rectangular, circular or other shape according to design requirements. In addition, the connection shape between the second connecting plate 6 and the lower cross beam 4 and the connecting boss 108 is not limited to the above-mentioned method, and it can also be adjusted according to design requirements. In addition, it is also necessary to mention that in addition to designing the first connecting plate 5 and the second connecting plate 6 at the same time, only the first connecting plate 5 or the second connecting plate 6 can be set according to design requirements.

[0076] In addition, in order to have better use effect, combined with Figures 1 to 3 As shown in , a powertrain suspension mounting bracket 7 is provided on the middle cross beam 3. In this embodiment, by providing the powertrain suspension mounting bracket 7 on the middle cross beam 3, it is convenient to realize the arrangement of the powertrain in the vehicle body of the rear-mounted vehicle. As a preferred embodiment, Figure 1 and 8 As shown in , the center cross member 3 of this embodiment 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 7 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.

[0077] In this embodiment, by making the projection outline of the end portion 302 of the middle cross beam 3 larger than the projection outline of the middle portion 301, the larger cross-sectional size of the end portion of the middle cross beam 3 can be used to increase the stability of the connection with the rear shock tower 1. Figure 7 As shown in , in order to further improve the lateral support effect of the middle cross beam 3, a plurality of cavities arranged at intervals are formed on the end portion 302. Correspondingly, a cavity connected to some of the cavities is provided on the middle portion 301. Such an arrangement can also make the middle cross beam 3 have a higher structural strength and better connection reliability with the rear shock tower 1.

[0078] As a specific implementation, the structure of the powertrain suspension mounting bracket 7 of this embodiment is as follows: Fig. 9 and Fig.10As shown in FIG. 1 , the front end has a groove 702 adapted to be set in the middle cross beam 3, and the rear end has two connecting ears 701 arranged opposite to each other, and each connecting ear 701 is provided with a connecting hole. The rear end of the middle cross beam 3 is embedded in the groove 702 and is welded to the powertrain suspension mounting bracket 7, and the powertrain suspension can be connected to the two connecting ears 701 by bolts. Of course, the structure of the powertrain suspension mounting bracket 7 is not limited to Fig. 9 The structure shown in can be adjusted accordingly according to design requirements.

[0079] The vehicle rear cabin frame structure of the present embodiment can improve the rigidity of the rear part of the vehicle body by adopting the above structure. At the same time, by connecting the rear shock towers 1 on both sides, multiple ring structures are formed between the cross beams. The high strength of the ring structure can also be used to increase the rigidity of the rear part of the vehicle body, which helps to disperse the collision force and improve the collision safety of the whole vehicle.

[0080] In addition, the present embodiment also relates to a vehicle, in which the vehicle rear cabin frame structure as described above is provided.

[0081] The vehicle of this embodiment has all the beneficial effects of the above-mentioned vehicle rear cabin frame structure, which will not be repeated here.

[0082] 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 cabin frame structure, characterized in that: It comprises rear shock absorbing towers (1) arranged on the left and right sides, and an upper crossbeam (2), a middle crossbeam (3) and a lower crossbeam (4) connected between the rear shock absorbing towers (1) on the two sides; The rear shock absorbing towers (1) on both sides are integrally formed, and the upper cross beam (2) is connected between the tops of the rear shock absorbing towers (1) on both sides, the lower cross beam (4) is connected between the bottoms of the rear shock absorbing towers (1) on both sides, and the middle cross beam (3) is located between the upper cross beam (2) and the lower cross beam (4); The upper cross beam (2), the middle cross beam (3) and the lower cross beam (4) are connected to the rear shock towers (1) on both sides to form a plurality of annular structures.

2. The vehicle rear cabin frame structure according to claim 1, 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).

3. The vehicle rear cabin frame structure according to claim 2, 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).

4. The vehicle rear cabin frame structure according to claim 3, 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).

5. The vehicle rear cabin frame structure according to claim 2, characterized in that: A first connecting plate (5) and / or a second connecting plate (6) are connected between the lower cross beam (4) and the rear shock tower (1) on each side; The first connecting plate (5) is arranged horizontally and connected between the lower cross beam (4) and the bottom of the rear shock absorber tower (1), and a swing arm mounting portion is provided at the connection position between the rear shock absorber tower (1) and the first connecting plate (5); The second connecting plate (6) is arranged vertically and connected between the side of the lower cross beam (4) and the connecting boss (108) 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.

6. The vehicle rear cabin frame structure according to claim 1, characterized in that: The upper cross beam (2) is connected to the top surface of the rear shock absorber tower (1) on each side, and / or the lower cross beam (4) is connected to the bottom surface of the rear shock absorber tower (1) on each side.

7. The vehicle rear cabin frame structure according to claim 1, characterized in that: A powertrain suspension mounting bracket (7) is provided on the middle cross beam (3).

8. The vehicle rear cabin frame structure according to claim 7, characterized in that: The rear shock towers (1) on both sides are provided with connection grooves (107), and the ends of the middle cross beam (3) are embedded in the connection grooves (107); and / or, The center cross beam (3) comprises an end portion (302) connected to the rear shock tower (1) on each side, and a middle portion (301) located between the end portions (302) on both sides, the powertrain suspension mounting bracket (7) is arranged on the middle portion (301), and the contour of each end portion (302) projected in the left-right direction of the whole vehicle is larger than the contour of the middle portion (301) projected in the left-right direction of the whole vehicle.

9. The vehicle rear cabin frame structure according to any one of claims 1 to 8, characterized in that: At least one of the upper crossbeam (2), the middle crossbeam (3) and the lower crossbeam (4) is made of extruded profile.

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

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