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 a rear wheel cover, a rear shock absorber support arranged in the rear wheel cover and a C column reinforcing plate arranged on the upper portion of the rear wheel cover. The rear shock absorber support is connected with the rear wheel cover and arranged along the rear wheel cover in the vertical direction of the whole vehicle, the top of the rear shock absorber support is connected with the C column reinforcing plate, and the bottom of the rear shock absorber support is connected with the rear floor longitudinal beam. The C column reinforcing plate extends in the vertical direction of the whole vehicle and is connected with the rear side window. According to the vehicle body rear structure, the rear shock absorber support is arranged along the rear wheel cover in the up-down direction of the whole vehicle, the top of the rear shock absorber support is connected with the C column reinforcing plate, and the bottom of the rear shock absorber support is connected with the rear floor longitudinal beam, so that the mounting strength of the rear shock absorber is improved; in addition, the force transmission performance of the vehicle body rear structure, the vehicle body collision strength and the torsional rigidity are improved, and then the rear wheel cover is prevented from collapsing towards the interior of the compartment during collision.

Description

Technical Field

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

[0002] The rear wheelhouse and the rear shock absorber mounting bracket are important components in the automobile body structure, and they each perform different functions and roles. The wheelhouse is a component in the automobile body structure, mainly located at the rear of the vehicle, covering and protecting the rear wheel and its related components. The rear wheelhouse can effectively protect key components such as the rear wheel, braking system, and suspension system from being eroded and damaged by the external environment, such as mud, sand, etc. The design of the rear wheelhouse also takes into account the overall aesthetics of the vehicle, making the rear of the vehicle look more coordinated and beautiful through smooth lines and shapes. The shock absorber mounting bracket provides a stable mounting point for the rear shock absorber, ensuring that the rear shock absorber can be correctly installed on the vehicle body and play its due shock absorption role.

[0003] However, in the prior art, the cooperation effect between the rear wheelhouse and the rear shock absorber mounting bracket and the surrounding components is not ideal, resulting in a low installation strength of the rear shock absorber, so that the force transmitted from the shock absorber to the mounting bracket cannot be better transmitted to the upper part of the vehicle body, and it cannot prevent the collapse into the passenger compartment well during a side collision, resulting in a poor collision force transmission effect and a low torsional stiffness of the whole vehicle, which is not conducive to the safety of the vehicle. Summary of the Utility Model

[0004] In view of this, the utility model aims to provide a rear body structure to improve the force transmission performance and collision safety.

[0005] To achieve the above object, the technical solution of the utility model is realized as follows:

[0006] A rear body structure includes a rear wheelhouse, a rear shock absorber support disposed inside the rear wheelhouse, and a C-pillar reinforcement disposed above the rear wheelhouse; the rear shock absorber support is connected to the rear wheelhouse and is arranged along the rear wheelhouse in the up-and-down direction of the whole vehicle, and the top of the rear shock absorber support is connected to the C-pillar reinforcement, and the bottom of the rear shock absorber support is connected to the rear floor longitudinal beam; the C-pillar reinforcement extends in the up-and-down direction of the whole vehicle, and the C-pillar reinforcement is connected to the rear side window.

[0007] Further, the rear floor longitudinal beam includes a longitudinal beam body, an inner plate of the front section of the longitudinal beam, a front cover plate of the longitudinal beam, and a middle cover plate of the longitudinal beam. The inner plate of the front section of the longitudinal beam is provided at the top of the longitudinal beam body, and the front cover plate of the longitudinal beam and the middle cover plate of the longitudinal beam are provided on the side of the longitudinal beam body close to the outside of the vehicle. The front cover plate of the longitudinal beam and the middle cover plate of the longitudinal beam are arranged at intervals in the front-rear direction of the whole vehicle. The rear shock absorber support is connected between the front cover plate of the longitudinal beam and the middle cover plate of the longitudinal beam, and a cavity is formed by enclosing between the rear shock absorber support, the longitudinal beam body, and the inner plate of the front section of the longitudinal beam.

[0008] Further, a flange is provided at the bottom of the rear shock absorber support, and the flange is connected to the longitudinal beam body in the up-down direction of the whole vehicle; and / or, the top of the rear shock absorber support is connected to the rear wheel housing and the C-pillar reinforcement plate in the up-down direction of the whole vehicle.

[0009] Further, the rear wheel housing includes an inner plate of the rear wheel housing and an outer plate of the rear wheel housing that are snap-connected to form an installation space. The rear shock absorber support is arranged along the inner plate of the rear wheel housing, and the top of the rear shock absorber support extends to the outer plate of the rear wheel housing and is connected to the outer plate of the rear wheel housing and the C-pillar reinforcement plate in the up-down direction of the whole vehicle.

[0010] Further, a protrusion is provided at the lower part of the rear shock absorber support. The protrusion protrudes toward the side away from the rear wheel housing, and a groove is formed on the protrusion. The groove communicates with the cavity.

[0011] Further, corresponding to the rear shock absorber support, a first reinforcing member is provided on the side of the rear wheel housing close to the inside of the vehicle. The first reinforcing member is connected to the rear wheel housing and the rear shock absorber support, and the first reinforcing member extends in the up-down direction of the whole vehicle. The top of the first reinforcing member is connected to the rear side window and the C-pillar reinforcement plate, and the bottom of the first reinforcing member is connected to the rear floor longitudinal beam.

[0012] Further, a connecting member is provided between the first reinforcing member and the rear floor longitudinal beam. The connecting member extends in the left-right direction of the whole vehicle and is connected to the rear floor cross beam.

[0013] Further, a second reinforcing member is connected between the first reinforcing member and the rear side window. From bottom to top, the second reinforcing member is inclined backward, and the connecting member, the rear side window, and the first reinforcing member are connected to form a triangular structure.

[0014] Further, the rear shock absorber support includes a support body provided with a shock absorber installation portion, and a support plate provided on the support body. The support plate is arranged corresponding to the shock absorber installation portion and has an avoidance groove for avoiding the shock absorber. An avoidance hole communicating with the avoidance groove is provided on the support body.

[0015] Compared with the prior art, the utility model has the following advantages:

[0016] In the body rear structure of the utility model, the rear shock absorber support is connected to the rear wheelhouse, and is arranged along the rear wheelhouse in the up-and-down direction of the whole vehicle. In addition, the top of the rear shock absorber support is connected to the C-pillar reinforcement plate, and the bottom of the rear shock absorber support is connected to the rear floor longitudinal beam. This not only helps to improve the installation strength of the rear shock absorber, but also helps to improve the force transmission performance, body collision strength and torsional stiffness of the body rear structure, and thus helps to prevent the rear wheelhouse from collapsing into the carriage during a collision.

[0017] In addition, the arrangement of the longitudinal beam body, the inner plate of the front section of the longitudinal beam, the front cover plate of the longitudinal beam and the middle cover plate of the longitudinal beam, the connection of the rear shock absorber support between the front cover plate of the longitudinal beam and the middle cover plate of the longitudinal beam, and the cavities formed by the cooperation of multiple components can further improve the force transmission effect of the rear shock absorber to the rear floor longitudinal beam, and help the force to be transmitted and dispersed along the front and rear directions of the whole vehicle through the rear floor longitudinal beam; the top of the rear shock absorber support is connected to the rear wheelhouse and the C-pillar reinforcement plate in the up-and-down direction of the whole vehicle, which helps to ensure that the force from the rear shock absorber is transmitted to the C-pillar reinforcement plate and then transmitted to the upper part of the vehicle body through components such as the rear side window. The rear shock absorber bracket is connected to the longitudinal beam body in the up-and-down direction through a flanging, which can improve the structural strength of the rear shock absorber support, and at the same time facilitate the connection between the rear shock absorber bracket and the longitudinal beam body, and can increase the strength and torsional stiffness of the body rear part.

[0018] In addition, the inner plate of the rear wheelhouse and the outer plate of the rear wheelhouse, and the top of the rear shock absorber support extends to the outer plate of the rear wheelhouse and is connected to the outer plate of the rear wheelhouse and the C-pillar reinforcement plate in the up-and-down direction of the whole vehicle, which can improve the setting firmness, and at the same time facilitate the connection with the C-pillar reinforcement plate, and thus helps to disperse and transmit the collision force upward. The setting of the protrusions and grooves on the rear shock absorber support helps to improve the structural strength of the rear shock absorber support, and at the same time helps to transmit the collision force to the rear floor longitudinal beam.

[0019] Furthermore, by setting the first reinforcement member, and connecting the rear shock absorber support to the first reinforcement member to transmit the collision force to the first reinforcement member, part of the external force can be transmitted to the C-pillar reinforcement plate and the rear side window through the first reinforcement member. A connecting member is arranged between the first reinforcement member and the rear floor longitudinal beam, so that part of the external force can be transmitted to the rear floor cross beam through the connecting member and be transmitted and dispersed along the left and right directions of the whole vehicle, which can avoid the rear wheelhouse from collapsing into the carriage. The setting of the second reinforcement member between the first reinforcement member and the rear side window, and the connection of the second reinforcement member with the rear side window and the first reinforcement member to form a triangular structure can transmit the external force to other parts such as the rear side window and then to the D-pillar through the second reinforcement member for dispersion. The setting of the support body and the support plate in the shock absorber support is easy to arrange and implement, and helps to improve the strength of the shock absorber support.

[0020] In addition, another object of the present utility model is to provide a vehicle, on which the rear body structure as described above is provided.

[0021] For the vehicle of the present utility model, by providing the rear body structure as described above, it is beneficial to improve the collision safety of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings forming a part of the present utility model are used to provide a further understanding of the present utility model. The schematic embodiments and descriptions thereof of the present utility model are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0023] Figure 1 is a schematic structural view of the rear body structure according to an embodiment of the present utility model from a first perspective;

[0024] Figure 2 is a schematic structural view of the rear body structure according to an embodiment of the present utility model from a second perspective;

[0025] Figure 3 is a schematic structural view of the rear body structure according to an embodiment of the present utility model from a third perspective;

[0026] Figure 4 is a schematic structural view of the inner panel of the rear wheel housing and the longitudinal beam of the rear floor according to an embodiment of the present utility model;

[0027] Figure 5 is a schematic structural view of the longitudinal beam of the rear floor according to an embodiment of the present utility model;

[0028] Figure 6 is a schematic structural view of the support body according to an embodiment of the present utility model from a first perspective;

[0029] Figure 7 is a schematic structural view of the support body according to an embodiment of the present utility model from a first perspective;

[0030] Figure 8 is a schematic structural view of the support plate according to an embodiment of the present utility model;

[0031] Figure 9 is a schematic structural view of the first reinforcing member, the second reinforcing member and the rear side window according to an embodiment of the present utility model;

[0032] Figure 10 is a schematic structural view of the first reinforcing member and the second reinforcing member in a connected state according to an embodiment of the present utility model;

[0033] Figure 11 is a schematic structural view of the connecting member according to an embodiment of the present utility model.

[0034] Description of the reference numerals in the drawings:

[0035] 1, Rear wheel housing; 2, Rear floor longitudinal beam; 3, Rear side window; 4, C-pillar reinforcement plate; 5, Rear shock absorber support; 6, First reinforcement member; 7, Second reinforcement member; 8, Connecting member;

[0036] 101, Outer panel of the rear wheel housing; 102, Inner panel of the rear wheel housing;

[0037] 200, Cavity; 201, Main body of the longitudinal beam; 202, Inner plate of the front section of the longitudinal beam; 203, Front cover plate of the longitudinal beam; 204, Middle cover plate of the longitudinal beam;

[0038] 301, C-pillar; 302, D-pillar;

[0039] 501, Main body of the support; 5011, Protrusion; 5012, Flange; 5013, Avoidance hole; 5015, Mounting hole; 502, Support plate; 5021, Avoidance groove; 5022, Matching hole;

[0040] 601, First connection hole;

[0041] 801, Upward flange; 8011, Second connection hole; 802, Third connection hole; 803, Side flange. Detailed implementation manners

[0042] It should be noted that, without conflict, the embodiments and the features in the embodiments of the present utility model can be combined with each other.

[0043] In the description of the present utility model, it should be noted that the orientation terms such as "upper, lower, left, right, front, and rear" used in this embodiment are defined based on the up-down direction, left-right direction, and front-rear direction of the vehicle. Among them, the up-down direction of the vehicle is also the height direction (Z direction) of the vehicle, the front-rear direction of the vehicle is also the length direction (X direction) of the vehicle, and the left-right direction of the vehicle is also the width direction (Y direction) of the vehicle. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0044] In addition, in the description of the present utility model, unless otherwise clearly defined, the terms "installation", "connection", "connection", and "connecting member" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood in combination with the specific situations.

[0045] The present utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0046] This embodiment relates to a rear body structure, aiming to solve the problem that the cooperation effect between the rear wheelhouse 1 and the rear shock absorber mounting bracket and their surrounding components in the prior art is not ideal, resulting in a low installation strength of the rear shock absorber, so that the force transmitted by the shock absorber to the mounting bracket cannot be better transmitted to the upper part of the vehicle body, and it cannot well prevent the collapse into the passenger compartment during a side impact.

[0047] In terms of the overall structure, the rear body structure includes a rear wheelhouse 1, a rear shock absorber support 5 disposed inside the rear wheelhouse 1, and a C-pillar reinforcement plate 4 disposed above the rear wheelhouse 1. The rear shock absorber support 5 is connected to the rear wheelhouse 1, is arranged along the rear wheelhouse 1 in the up-and-down direction of the whole vehicle, the top of the rear shock absorber support 5 is connected to the C-pillar reinforcement plate 4, and the bottom of the rear shock absorber support 5 is connected to the rear floor longitudinal beam 2; the C-pillar reinforcement plate 4 extends in the up-and-down direction of the whole vehicle, and the C-pillar reinforcement plate 4 is connected to the rear side window 3.

[0048] In the rear body structure described in this embodiment, the rear shock absorber support 5 is connected to the rear wheelhouse 1 and is arranged along the rear wheelhouse 1 in the up-and-down direction of the whole vehicle, and the top of the rear shock absorber support 5 is connected to the C-pillar reinforcement plate 4, and the bottom of the rear shock absorber support 5 is connected to the rear floor longitudinal beam 2, which not only helps to improve the installation strength of the rear shock absorber, but also helps to improve the force transmission performance, body collision strength and torsional stiffness of the rear body structure, and further helps to prevent the rear wheelhouse 1 from collapsing into the passenger compartment during a collision.

[0049] Based on the above overall introduction, an exemplary structure of the rear body structure described in this embodiment is as shown in Figures 1 to 3 As shown. Among them, the rear floor longitudinal beam 2 extends along the front-rear direction of the whole vehicle, the rear wheelhouse 1 is located outside the rear floor longitudinal beam 2, and the bottom inside the rear wheelhouse 1 is connected to the rear floor longitudinal beam 2. As a preferred embodiment, as shown in Figure 4 and Figure 5 As shown, the rear floor longitudinal beam 2 includes a longitudinal beam body 201, and an inner longitudinal beam front section 202, a longitudinal beam front cover 203 and a longitudinal beam middle cover 204. The inner longitudinal beam front section 202 is disposed on the top of the longitudinal beam body 201, and the longitudinal beam front cover 203 and the longitudinal beam middle cover 204 are disposed on the side of the longitudinal beam body 201 close to the outside of the vehicle. Among them, the longitudinal beam front cover 203 and the longitudinal beam middle cover 204 are spaced along the front-rear direction of the whole vehicle, the rear shock absorber support 5 is connected between the longitudinal beam front cover 203 and the longitudinal beam middle cover 204, and a cavity 200 is formed between the rear shock absorber support 5 and the longitudinal beam body 201 and the inner longitudinal beam front section 202.

[0050] In this embodiment, the longitudinal beam body 201, the inner plate 202 of the front section of the longitudinal beam, the front cover plate 203 of the longitudinal beam, and the middle cover plate 204 of the longitudinal beam are arranged. The rear shock absorber support 5 is connected between the front cover plate 203 and the middle cover plate 204 of the longitudinal beam, and the cavity 200 formed by the cooperation of multiple components can further improve the force transmission effect of the rear shock absorber to the rear floor longitudinal beam 2, which is beneficial to the transmission and dispersion of force along the longitudinal direction of the whole vehicle through the rear floor longitudinal beam 2.

[0051] Specifically, structurally, as Figure 4 and Figure 5 shown in, the longitudinal beam body 201 has a bottom part located at the bottom, and a side part connected to the inner side of the bottom part and extending upward. The inner plate 202 of the front section of the longitudinal beam is connected between the top of the side part and the inner side of the rear wheel housing 1, and the cross-section formed by the longitudinal beam body 201 and the inner plate 202 of the front section of the longitudinal beam is in a horizontally arranged "U" shape, and the opening of the "U" shape faces outward. The front cover plate 203 of the longitudinal beam is connected between the front part of the bottom part of the longitudinal beam body 201 and the outer side of the inner plate 202 of the front section of the longitudinal beam to block the opening between the two. The middle cover plate 204 of the longitudinal beam is connected between the rear part of the bottom part of the longitudinal beam body 201 and the outer side of the inner plate 202 of the front section of the longitudinal beam to block the opening between the two.

[0052] In this embodiment, the bottom of the rear shock absorber support 5 is connected between the front cover plate 203 and the middle cover plate 204 of the longitudinal beam, and is connected to both the bottom part of the longitudinal beam body 201 and the inner plate 202 of the front section of the longitudinal beam, thereby blocking the opening between the front cover plate 203 and the middle cover plate 204 of the longitudinal beam and facilitating the formation of the above-mentioned cavity 200. Among them, more collision energy can be absorbed through the cavity 200, reducing the transmission of energy to the occupant compartment, thereby protecting the safety of the occupants. This energy absorption effect is achieved through the deformation of the cavity 200 and the fracture of the material, which can significantly reduce the harm caused by the collision to the occupants. At the same time, the cavity 200 can be used as a collision buffer zone, absorbing the collision energy through its deformation and reducing the impact on the occupant compartment.

[0053] As a feasible connection method, the front and rear sides of the bottom of the rear shock absorber support 5 are respectively lapped on the front cover plate 203 and the middle cover plate 204 of the longitudinal beam, and the rear shock absorber support 5 and the front cover plate 203 and the middle cover plate 204 of the longitudinal beam are all welded by CO2 shielded arc welding. CO2 shielded arc welding is a widely used welding technology, and its advantages are mainly reflected in high welding efficiency, good welding quality, low cost, simple operation, and good protection effect, which is beneficial to ensuring the connection firmness between the rear shock absorber support 5 and the front cover plate 203 and the middle cover plate 204 of the longitudinal beam.

[0054] As a feasible implementation manner, a flanging 5012 is provided at the bottom of the rear shock absorber support 5. The flanging 5012 is connected to the longitudinal beam body 201 in the up-and-down direction of the whole vehicle. The rear shock absorber bracket is connected to the longitudinal beam body 201 in the up-and-down direction of the whole vehicle through the flanging 5012, which can improve the structural strength of the rear shock absorber support 5. At the same time, it is also convenient for the rear shock absorber bracket to be connected to the longitudinal beam body 201, and can increase the strength and torsional stiffness of the rear part of the vehicle body. As Figure 4 and Figure 6 shown in, the flanging 5012 is folded outward relative to the bottom of the rear shock absorber support 5 and overlaps on the bottom part. The flanging 5012 and the bottom part are connected together by spot welding. Spot welding here has the advantages of fast welding speed, low welding cost, and high strength of the weld points formed by spot welding, and can meet the connection requirements of most structural parts.

[0055] As Figure 1 and Figure 2 shown in, the rear side window 3 has a rear side window inner panel arranged in a closed loop. Among them, the front side part of the rear side window 3 extends in the up-and-down direction of the whole vehicle, and the C-pillar 301 of the vehicle body is formed. The top part and the rear part of the rear side window 3 are arranged in a smooth arc shape and form the D-pillar 302 of the vehicle body. In this embodiment, the top of the rear shock absorber support 5 is connected to the rear wheel housing 1 and the C-pillar reinforcement plate 4 in the up-and-down direction of the whole vehicle. Such a setting is conducive to ensuring that the force from the rear shock absorber is transmitted to the C-pillar reinforcement plate 4 and is transmitted to the upper part of the vehicle body through parts such as the rear side window 3, thereby facilitating the improvement of the force transmission performance of the rear part of the vehicle body. Among them, the C-pillar 301 reinforcement member is located outside the rear side window inner panel and has a first part located outside the front side part and a second part extending downward from the rear bottom of the rear side window 3.

[0056] In addition, the structure of the rear wheel housing 1 in this embodiment is as Figures 1 to 3 shown in. The rear wheel housing 1 includes a rear wheel housing inner panel 102 and a rear wheel housing outer panel 101 that are snap-connected and form an installation space. The rear shock absorber support 5 is arranged along the rear wheel housing inner panel 102, and the top of the rear shock absorber support 5 extends to the rear wheel housing outer panel 101 and is connected to the rear wheel housing outer panel 101 and the C-pillar reinforcement plate 4 in the up-and-down direction of the whole vehicle. Among them, the rear wheel housing inner panel 102 and the rear wheel housing outer panel 101, and the top of the rear shock absorber support 5 extend to the rear wheel housing outer panel 101 and are connected to the rear wheel housing outer panel 101 and the C-pillar reinforcement plate 4 in the up-and-down direction of the whole vehicle, which can improve the setting firmness, and is also convenient for connecting to the C-pillar reinforcement plate 4, and further facilitates the upward dispersion and transmission of the collision force.

[0057] In this embodiment, the rear shock absorber support 5 is disposed in the middle of the outer side of the inner panel 102 of the rear wheel housing. The top of the rear shock absorber support 5 extends outward toward the vehicle exterior and is connected to the top of the outer panel 101 of the rear wheel housing. Such an arrangement not only helps improve the connection strength between the inner panel 102 and the outer panel 101 of the rear wheel housing, but also helps increase the connection area between the rear shock absorber support 5 and the rear wheel housing 1, thereby improving the installation reliability of the rear shock absorber support 5 on the rear wheel housing 1.

[0058] As Figure 3 shown in the figure, the rear side window 3 is located at the top of the rear wheel housing 1. Among them, the C-pillar 301, as the front side part of the rear side window 3, extends along the vehicle height direction. The rear reinforcement plate of the C-pillar 301 is located on the outer side of the C-pillar 301 and extends downward to the front side of the inner panel 102 of the rear wheel housing. The top of the rear shock absorber support 5 is disposed opposite to the rear reinforcement plate of the C-pillar 301 upward at the top of the inner panel 102 of the rear wheel housing, which is conducive to the connection of the three in the up and down direction of the vehicle body.

[0059] In this embodiment, the top of the rear shock absorber support 5 is connected to the C-pillar reinforcement plate 4, and the bottom is connected to the rear floor longitudinal beam 2, so that the rear shock absorber support 5 can play a role of connecting the upper and lower parts, making the rear shock absorber support 5, the rear floor longitudinal beam 2 and the C-pillar reinforcement plate 4 form a firm whole, which is conducive to increasing the strength of the rear part of the vehicle body and improving the torsional stiffness of the vehicle body. In addition, the force transmitted by the rear shock absorber can be transmitted upward through the rear shock absorber support 5 to the C-pillar reinforcement plate 4, and through the C-pillar reinforcement plate 4 to the rear side window 3, and then continue to be transmitted to the upper part of the vehicle body.

[0060] As a preferred embodiment, a protrusion 5011 is provided at the lower part of the rear shock absorber support 5. The protrusion 5011 protrudes away from the rear wheel housing 1, and a groove is formed on the protrusion 5011. The groove communicates with the cavity 200. Here, the protrusion 5011 preferably extends along the height direction of the rear shock absorber support 5, which is conducive to improving the structural strength of the rear shock absorber support 5 and also conducive to transmitting the collision force to the rear floor longitudinal beam 2.

[0061] Specifically, as Figure 6 shown in the figure, there are two protrusions 5011 arranged at intervals in the front-rear direction of the vehicle body on the rear shock absorber support 5. The groove is located on the side of the protrusion 5011 facing the cavity 200. By arranging the protrusion 5011 to extend along the up and down direction of the vehicle body, it is also conducive to further improving the force transmission performance and efficiency of the rear shock absorber support 5 to the top and bottom. At the same time, the cooperation of the two protrusions 5011 has an enhanced strength effect for replacement. In addition, the setting of the groove also increases the volume of the cavity 200, which is conducive to further improving the collision energy absorption capacity and force transmission performance of the cavity 200. Of course, in specific implementation, the number of protrusions 5011 can also be increased or decreased according to the use requirements.

[0062] AsFigures 6 to 8 As shown, in this embodiment, the rear shock absorber support 5 includes a support body 501 provided with a shock absorber mounting portion, and a support plate 502 provided on the support body 501. Among them, the support plate 502 is arranged corresponding to the shock absorber mounting portion and has an avoidance groove 5021 for avoiding the shock absorber. An avoidance hole 5013 communicating with the avoidance groove 5021 is provided on the support body 501. The arrangement of the support body 501 and the support plate 502 here is not only easy to arrange and implement, but also conducive to improving the strength of the rear shock absorber support 5.

[0063] In terms of the detailed structure, referring to Figures 6 to 8 As shown, the middle part of the support plate 502 has an avoidance groove 5021 recessed towards the vehicle interior, and the support plate 502 also has a connecting portion arranged along the circumference of the avoidance groove 5021. The avoidance hole 5013 is located in the middle of the support body 501. The avoidance hole 5013 and the avoidance groove 5021 cooperate with each other to be able to avoid the shock absorber. In addition, the support plate 502 is specifically connected to the support body 501 by welding through the connecting portion. The structure of the support plate 502 in this embodiment is simple, convenient for processing and forming, and has a good use effect. In addition, a mounting hole 5015 for mounting the rear shock absorber is provided on the support body 501, and a mating hole 5022 is provided on the support plate 502, and each mating hole 5022 and the corresponding mounting hole 5015 are arranged in one-to-one correspondence.

[0064] As a preferred embodiment, as Figure 2 As shown, corresponding to the rear shock absorber support 5, a first reinforcing member 6 is provided on the inner side of the rear wheel arch 1 close to the vehicle interior. The first reinforcing member 6 is connected to the rear wheel arch 1 and the rear shock absorber support 5, and the first reinforcing member 6 extends along the up-and-down direction of the whole vehicle. The top of the first reinforcing member 6 is connected to the rear side window 3 and the C-pillar reinforcement plate 4, and the bottom of the first reinforcing member 6 is connected to the rear floor longitudinal beam 2. Here, the setting of the connection relationship between the first reinforcing member 6 and the surrounding components is conducive to transmitting the collision force to the first reinforcing member 6, and part of the external force can be transmitted to the C-pillar reinforcement plate 4 and the rear side window 3 through the first reinforcing member 6, so as to further improve the dispersion and transmission effect of the collision force and the acting force generated by the rear shock absorber.

[0065] In terms of the specific structure, the first reinforcing member 6 is in the shape of a plate, which is arranged on the inner side of the inner panel 102 of the rear wheel arch. The top of the first reinforcing member 6 overlaps the inner sides of the rear side window 3 and the C-pillar reinforcement plate 4, and the three are connected together by welding. Such a setting is not only conducive to improving the connection strength of the top of the first reinforcing member 6, but also can improve the connection strength between the rear side window 3 and the C-pillar reinforcement plate 4, so that the connection part of the first reinforcing member 6, the rear side window 3 and the C-pillar reinforcement plate 4 has a high load-bearing effect and force transmission effect when transmitting force.

[0066] In this embodiment, the bottom end of the first reinforcing member 6 is spaced above the rear floor longitudinal beam 2. To facilitate the connection between the first reinforcing member 6 and the rear floor longitudinal beam 2, as Figure 2 shown in Figure 2 , a connecting member 8 is provided between the first reinforcing member 6 and the rear floor longitudinal beam 2. The connecting member 8 extends in the left-right direction of the vehicle body, and the connecting member 8 is connected to the rear floor cross beam. The setting of the connecting member 8 here not only allows a part of the external force to be transmitted to the rear floor cross beam through the connecting member 8 and dispersed in the left-right direction of the vehicle body, avoiding the rear wheel housing 1 from collapsing into the compartment, but also enables the force transmitted from the rear shock absorber support 5 to be transmitted to the rear floor longitudinal beam 2 through the first reinforcing member 6 and the connecting member 8, so that the force can be dispersed and transmitted forward and backward through the rear floor longitudinal beam 2.

[0067] Specifically in terms of structure, as Figure 11 shown in Figure 11 , the cross section of the connecting member 8 is in a "ji" shape with the opening facing downwards. The outer end of the connecting member 8 is provided with an upwardly folded upper flange 801 and side flanges 803 located on the front and rear sides of the connecting member 8. Among them, the upper flange 801 is lapped on the inner side of the bottom of the first reinforcing member 6 and is connected to the first reinforcing member 6 through fasteners. Specifically, when connecting, a plurality of first connection holes 601 are provided at the bottom of the first reinforcing member 6 at intervals in the front-rear direction of the vehicle body, and second connection holes 8011 corresponding to the first connection holes 601 one by one are provided on the upper flange 801. Fasteners such as bolts can be used. The bolts pass through the corresponding first connection holes 601 and second connection holes 8011 and are connected to nuts, so that the connecting member 8 and the first reinforcing member 6 can be connected together.

[0068] To further improve the connection strength between the first reinforcing member 6 and the inner panel 202 of the front section of the longitudinal beam, as Figure 11 shown in Figure 11 , two third connection holes 802 are provided on the connecting member 8 at intervals near the upper flange 801. The connecting member 8 is connected to the inner panel 202 of the front section of the longitudinal beam through bolts and nuts passing through the third connection holes 802 and the inner panel 202 of the front section of the longitudinal beam.

[0069] In addition, the outer ends of the two side flanges 803 are both lapped on the inner panel 202 of the front section of the longitudinal beam. Fourth connection holes are provided on both of them and penetrate through in the up-down direction of the vehicle body. The connecting member 8 and the rear floor longitudinal beam 2 are also connected together through bolts and nuts passing through both of them. In this embodiment, the connecting member 8 and the first reinforcing member 6 are connected in the left-right direction of the vehicle body, and the connecting member 8 and the rear floor longitudinal beam 2 are connected in the up-down direction of the vehicle body. In this way, it is beneficial to improve the connection strength and force transmission stability among the connecting member 8, the first reinforcing member 6, and the rear floor longitudinal beam 2. The connecting member 8 in this embodiment is also welded to the rear floor cross beam through the two side flanges 803. The structure of the connecting member 8 is simple, easy to process and form, and has good connection and force transmission effects.

[0070] As a preferred embodiment, asFigure 9 and Figure 10 As shown in Figure 10 , a second reinforcement member 7 is connected between the first reinforcement member 6 and the rear side window 3. From bottom to top, the second reinforcement member 7 is arranged obliquely backward and is connected to the rear side window 3 and the first reinforcement member 6 to form a triangular structure. Here, the external force can be transmitted to other parts such as the rear side window 3 and then to the D-pillar 302 through the second reinforcement member 7 for dispersion. At the same time, the characteristic of high stability of the triangle can also be utilized to improve the connection stability among the first reinforcement member 6, the second reinforcement member 7, and the rear floor longitudinal beam 2.

[0071] In specific implementation, the second connecting member 8 is strip-shaped. Its bottom is lapped on the rear side of the middle part of the first reinforcement member 6 and is welded to the first reinforcement member 6. The top of the second connecting member 8 is lapped on the rear end of the bottom of the rear side window 3 and is welded to the rear side window 3. In addition, in this embodiment, a first cavity is formed between the first reinforcement member 6 and the inner panel 102 of the rear wheel housing, a second cavity is formed between the second reinforcement member 7 and the inner panel 102 of the rear wheel housing, and the bottom of the rear side window 3 has a third cavity. Among them, the first cavity, the second cavity, and the third cavity are also arranged in a triangle, so that the absorption and transmission and dispersion effects of the collision force by the three cavities can be improved.

[0072] In this embodiment, the rear wheel housing 1 and the rear shock absorber support 5 are interrelated and cooperate with each other in the vehicle body structure. The rear wheel housing 1 provides an installation space and a protection barrier for the rear shock absorber and its mounting support, while the rear shock absorber support 5 ensures that the rear shock absorber can be correctly installed on the vehicle body and play its role. The two together constitute an important support and shock absorption system at the rear of the vehicle, which is of great significance for improving the driving stability and ride comfort of the vehicle.

[0073] For the vehicle body rear structure described in this embodiment, by optimizing the connection relationship among the rear shock absorber support 5, the rear floor longitudinal beam 2, the rear side window 3 and other peripheral components, it is beneficial to improve the torsional stiffness of the vehicle body and the force transmission performance of the rear shock absorber support 5 to the upper part of the vehicle body, so as to enhance the anti-collision performance at the rear wheel housing 1. When a collision occurs to the vehicle body, the external collision force is transmitted to the rear shock absorber support 5 through components such as the outer panel 101 of the rear wheel housing and the C-pillar reinforcement plate 4. Part of the force is transmitted downward from the rear shock absorber support 5 to the rear floor longitudinal beam 2, and part of the force is transmitted to the first reinforcement member 6 and the second reinforcement member 7, and then is transmitted to the rear floor cross beam through the rear floor longitudinal beam 2 and the connecting member 8, so that the external collision force is dispersed to different components, thus avoiding the rear wheel housing 1 from collapsing into the compartment.

[0074] In addition, this embodiment also relates to a vehicle, and the vehicle is provided with the vehicle body rear structure described above.

[0075] The vehicle described in this embodiment is provided with the rear body structure as above, which is conducive to improving the force transmission performance of the vehicle, effectively preventing the rear wheel housing 1 from collapsing into the carriage, and thus conducive to improving the safety of the vehicle.

[0076] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A vehicle body rear structure, characterized in that: It comprises a rear wheel cover (1), a rear shock absorber support (5) arranged in the rear wheel cover (1), and a C-pillar reinforcement plate (4) arranged on the upper part of the rear wheel cover (1); The rear shock absorber support (5) is connected to the rear wheel cover (1) and is arranged along the rear wheel cover (1) in the vertical direction of the whole vehicle, and the top of the rear shock absorber support (5) is connected to the C-pillar reinforcement plate (4), and the bottom of the rear shock absorber support (5) is connected to the rear floor longitudinal beam (2); The C-pillar reinforcement plate (4) extends in the up-down direction of the entire vehicle, and the C-pillar reinforcement plate (4) is connected to the rear side window (3).

2. The vehicle body rear structure according to claim 1, characterized in that: The rear floor longitudinal beam (2) comprises a longitudinal beam body (201), a longitudinal beam front section inner plate (202), a longitudinal beam front cover plate (203) and a longitudinal beam middle cover plate (204), wherein the longitudinal beam front section inner plate (202) is arranged on the top of the longitudinal beam body (201), and the longitudinal beam front cover plate (203) and the longitudinal beam middle cover plate (204) are arranged on a side of the longitudinal beam body (201) close to the outside of the vehicle; The longitudinal beam front cover plate (203) and the longitudinal beam middle cover plate (204) are arranged at intervals along the front-rear direction of the vehicle, the rear shock absorber support (5) is connected between the longitudinal beam front cover plate (203) and the longitudinal beam middle cover plate (204), and a cavity (200) is formed between the rear shock absorber support (5) and the longitudinal beam body (201) and the longitudinal beam front section inner plate (202).

3. The vehicle body rear structure according to claim 2, characterized in that: The bottom of the rear shock absorber support (5) is provided with a flange (5012), and the flange (5012) is connected to the longitudinal beam body (201) in the vertical direction of the whole vehicle; and / or, The top of the rear shock absorber support (5) is connected to the rear wheel cover (1) and the C-pillar reinforcement plate (4) in the upper and lower directions of the vehicle.

4. The rear vehicle body structure according to claim 3, characterized in that: The rear wheel cover (1) comprises a rear wheel cover inner plate (102) and a rear wheel cover outer plate (101) which are buckled and connected to form an installation space; The rear shock absorber support (5) is arranged along the rear wheel cover inner plate (102), and the top of the rear shock absorber support (5) extends to the rear wheel cover outer plate (101), and is connected to the rear wheel cover outer plate (101) and the C-pillar reinforcement plate (4) in the upper and lower directions of the vehicle.

5. The vehicle body rear structure according to claim 2, characterized in that: A protrusion (5011) is provided at the lower part of the rear shock absorber support (5), the protrusion (5011) protrudes toward a side away from the rear wheel cover (1), and a groove is formed on the protrusion (5011); The groove is communicated with the cavity (200).

6. The vehicle body rear structure according to claim 1, characterized in that: Corresponding to the rear shock absorber support (5), a first reinforcement member (6) is provided on a side of the rear wheel cover (1) close to the interior of the vehicle; The first reinforcement (6) is connected to the rear wheel cover (1) and the rear shock absorber support (5), and the first reinforcement (6) extends in the up-down direction of the vehicle, the top of the first reinforcement (6) is connected to the rear side window (3) and the C-pillar reinforcement plate (4), and the bottom of the first reinforcement (6) is connected to the rear floor longitudinal beam (2).

7. The vehicle body rear structure according to claim 6, characterized in that: A connecting member (8) is provided between the first reinforcing member (6) and the rear floor longitudinal beam (2), and the connecting member (8) extends in the left-right direction of the vehicle, and the connecting member (8) is connected to the rear floor cross beam.

8. The vehicle body rear structure according to claim 6, characterized in that: A second reinforcement member (7) is connected between the first reinforcement member (6) and the rear side window (3), and from bottom to top, the second reinforcement member (7) is arranged to be tilted backwards and connected with the rear side window (3) and the first reinforcement member (6) to form a triangular structure.

9. The vehicle body rear structure according to any one of claims 1 to 8, characterized in that: The rear shock absorber support (5) comprises a support body (501) provided with a shock absorber mounting portion, and a support plate (502) provided on the support body (501); The support plate (502) is arranged corresponding to the shock absorber installation portion and has an avoidance groove (5021) for avoiding the shock absorber, and the support body (501) is provided with an avoidance hole (5013) connected to the avoidance groove (5021).

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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