Rear body structure and vehicle

Abstract

The present application discloses a rear body structure and a vehicle. The rear body structure includes an inner rear quarter panel, a C-pillar reinforcement plate, a longitudinal rear quarter reinforcement plate, an outer reinforcement plate of the rear wheel housing, and a rear suspension spring mounting bracket. One end of the outer reinforcement plate of the rear wheel housing is connected to the rear suspension spring mounting bracket, and the other end is provided with a first support arm and a second support arm. The first support arm is connected to the C-pillar reinforcement plate, and the second support arm is connected to the longitudinal rear quarter reinforcement plate. The inner rear quarter panel is connected between the longitudinal rear quarter reinforcement plate and the C-pillar reinforcement plate. The rear suspension spring mounting bracket, the outer reinforcement plate of the rear wheel housing, the C-pillar reinforcement plate, the longitudinal rear quarter reinforcement plate, and the inner rear quarter panel together form an inverted A-shaped multi-channel force transmission structure. The inverted A-shaped multi-channel force transmission structure formed around the triangular window effectively transmits the impact loads of the rear shock absorber and the rear suspension spring tower to the upper body, with diverse force transmission paths, solving the problems of overly concentrated impact loads and cracking of the overlapping weld joints.

Description

Technical Field

[0001] This application relates to the technical field of vehicle body structures, and particularly to a rear body structure and a vehicle. Background Art

[0002] With the rapid development of vehicle technology, people's requirements for vehicle performance are getting higher and higher. The quality of the main body structure of the vehicle body directly affects the performance of the whole vehicle. Especially, the force on the rear body structure is relatively complex, directly bearing the impact force of the chassis on the rear suspension mounting structure, the impact force of the shock absorber on the vehicle body, the impact force of the spring on the tower seat, the collision force of the rear collision on the vehicle body, etc. The quality of the rear body structure directly affects the stiffness, strength, frame opening deformation, bending and torsion modes, durability and reliability, rear collision, and NVH performance of the vehicle body. At the same time, it will directly affect the collision safety, durability and reliability, and riding comfort of the whole vehicle.

[0003] Currently, due to the existence of the triangular window in the rear body structure, the outer reinforcement structures of the rear wheelhouse are independent of each other, with less structural correlation, and it is impossible to form an up-and-down coherent multi-channel force transmission structure from the spring tower seat to the roof cross member. The force transmission path has poor penetration and an unreasonable force transmission path, and the overlapping weld joints are prone to cracking. Summary of the Invention

[0004] The embodiments of this application provide a rear body structure and a vehicle, which can at least solve the problems of unreasonable force transmission path and easy cracking of overlapping weld joints.

[0005] The rear body structure provided by the embodiments of this application includes an inner rear quarter panel, a C-pillar reinforcement, a longitudinal rear quarter reinforcement, an outer rear wheelhouse reinforcement, and a rear suspension spring mounting bracket; one end of the outer rear wheelhouse reinforcement is connected to the rear suspension spring mounting bracket, and the other end is provided with a first support arm and a second support arm. The first support arm is connected to the C-pillar reinforcement, and the second support arm is connected to the longitudinal rear quarter reinforcement. The inner rear quarter panel is connected between the longitudinal rear quarter reinforcement and the C-pillar reinforcement. The rear suspension spring mounting bracket, the outer rear wheelhouse reinforcement, the C-pillar reinforcement, the longitudinal rear quarter reinforcement, and the inner rear quarter panel together form an inverted A-shaped multi-channel force transmission structure.

[0006] In some embodiments, the rear body structure further includes a D-pillar upper reinforcement and a C / D-pillar joint connecting plate. One end of the longitudinal rear quarter reinforcement overlaps and aligns with the second support arm, and the other end overlaps with the D-pillar upper reinforcement; one end of the C-pillar reinforcement overlaps and aligns with the first support arm, and the other end overlaps with the C / D-pillar joint connecting plate.

[0007] In some embodiments, the rear body structure further includes a roof auxiliary cross member, a rear roof cross member, a rear longitudinal beam, a first lower rear floor cross member, and a second lower rear floor cross member; the inverted A-shaped multi-channel force transmission structure, the C / D pillar joint connection plate, the roof auxiliary cross member, the rear roof cross member, the upper D-pillar reinforcement plate, the rear longitudinal beam, the first lower rear floor cross member, and the second lower rear floor cross member together form an integral inverted A-shaped outer ring structure.

[0008] In some embodiments, the rear suspension spring mounting bracket is connected to the rear longitudinal beam, the C-pillar reinforcement plate is connected to one end of the C / D pillar joint connection plate, the other end of the C / D pillar joint connection plate is connected to the upper D-pillar reinforcement plate, the rear quarter longitudinal reinforcement plate is connected to the upper D-pillar reinforcement plate, the roof auxiliary cross member and the rear roof cross member are spaced apart from each other and are both connected between the two C / D pillar joint connection plates, the first lower rear floor cross member and the second lower rear floor cross member are spaced apart from each other and are both connected between the two rear longitudinal beams.

[0009] In some embodiments, the rear body structure further includes a lower D-pillar reinforcement plate and a rear quarter transverse reinforcement plate. The lower D-pillar reinforcement plate and the upper D-pillar reinforcement plate are respectively located at opposite ends of the D-pillar; both ends of the rear quarter transverse reinforcement plate are respectively connected to the lower D-pillar reinforcement plate and the rear quarter longitudinal reinforcement plate, and the rear quarter inner panel, the rear quarter transverse reinforcement plate, and the rear quarter longitudinal reinforcement plate together form an X-shaped C / D pillar connection structure.

[0010] In some embodiments, the rear body structure further includes a front rear quarter inner panel reinforcement plate, a front wheelhouse reinforcement plate, an upper rear floor cross member, a rear rear quarter inner panel reinforcement plate, a rear wheelhouse reinforcement plate, a second lower rear floor cross member, and a wheelhouse transverse reinforcement plate; the front rear quarter inner panel reinforcement plate, the front wheelhouse reinforcement plate, the upper rear floor cross member, the rear rear quarter inner panel reinforcement plate, the rear wheelhouse reinforcement plate, the second lower rear floor cross member, and the wheelhouse transverse reinforcement plate together form an H-shaped multi-channel force transmission structure.

[0011] In some embodiments, the rear body structure further includes a C / D pillar joint connection plate; both ends of the upper rear floor cross member are respectively connected to one end of the front wheelhouse reinforcement plate, the other end of the front wheelhouse reinforcement plate is connected to the front rear quarter inner panel reinforcement plate, both ends of the second lower rear floor cross member are respectively connected to one end of the rear wheelhouse reinforcement plate, the other end of the rear wheelhouse reinforcement plate is connected to the rear rear quarter inner panel reinforcement plate; both the front rear quarter inner panel reinforcement plate and the rear rear quarter inner panel reinforcement plate are connected to the C / D pillar joint connection plate; one end of the wheelhouse transverse reinforcement plate is connected to the front wheelhouse reinforcement plate, and the other end is connected to the rear wheelhouse reinforcement plate.

[0012] In some embodiments, the rear body structure further includes a C / D pillar joint connecting plate, a roof auxiliary crossmember, a rear roof crossmember, and an upper reinforcement plate of the D pillar. The roof auxiliary crossmember and the rear roof crossmember are spaced apart from each other and are both connected between the two C / D pillar joint connecting plates. The H-shaped multi-channel force transmission structure, the C / D pillar joint connecting plate, the roof auxiliary crossmember, the rear roof crossmember, and the upper reinforcement plate of the D pillar together form an integrated H-shaped inner ring structure.

[0013] In some embodiments, the H-shaped multi-channel force transmission structure on one side, the inverted A-shaped multi-channel force transmission structure on the other side, the C / D pillar joint connecting plate, the roof auxiliary crossmember, and the rear roof crossmember together form an integrated inner and outer ring structure.

[0014] The vehicle according to the embodiment of the present application includes the rear body structure according to any one of the above embodiments.

[0015] In the rear body structure and the vehicle of the present application, the inverted A-shaped multi-channel force transmission structure formed by the rear suspension spring mounting bracket, the outer reinforcement plate of the rear wheel housing, the C-pillar reinforcement plate, the longitudinal reinforcement plate of the rear side panel, and the inner panel of the rear side panel enables the impact loads of the rear shock absorber and the rear suspension spring tower to be effectively transmitted to the upper vehicle body. The force transmission path is diversified, solving the problems of overly concentrated impact loads and cracking of overlapping weld joints. At the same time, the upper and lower vehicle bodies are coherently connected and the force transmission path is complete, which is beneficial to improving the bending and torsion stiffness, bending and torsion modes, and durability and reliability of the whole vehicle.

[0016] The additional aspects and advantages of the embodiments of the present application will be partially given in the following description, partially become apparent from the following description, or be understood through the practice of the embodiments of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, wherein:

[0018] Figure 1 is a three-dimensional schematic diagram of the rear body structure according to some embodiments of the present application;

[0019] Figure 2 is Figure 1 a partial structural schematic diagram of the rear body structure shown in FIG.

[0020] Figure 3 is Figure 1 a partial structural schematic diagram of the rear body structure shown in FIG.

[0021] Figure 4 is a schematic diagram showing Figure 3 the inverted A-shaped multi-channel force transmission structure formed in FIG.

[0022] Figure 5 is a schematic diagram of the outer ring structure of the rear body structure of some embodiments of the present application;

[0023] Figure 6 is a display of Figure 5 the integrated inverted A-shaped outer ring structure formed therein;

[0024] Figure 7 is a display of Figure 3 the X-shaped C / D pillar connection structure formed therein;

[0025] Figure 8 is a schematic diagram of the inner ring structure of the rear body structure of some embodiments of the present application;

[0026] Figure 9 is a display of Figure 8 the integrated H-shaped inner ring structure formed therein;

[0027] Figure 10 is a schematic diagram of the inner and outer ring structures of the rear body structure of some embodiments of the present application;

[0028] Figure 11 is a display of Figure 10 the integrated inner and outer ring structure formed therein;

[0029] Figure 12 is a three-dimensional schematic diagram of a vehicle of some embodiments of the present application.

[0030] Description of main component symbols:

[0031] Rear body structure 100, inverted A-shaped multi-channel force transmission structure 101, integrated inverted A-shaped outer ring structure 102, X-shaped C / D pillar connection structure 103, H-shaped multi-channel force transmission structure 105, integrated H-shaped inner ring structure 107, integrated inner and outer ring structure 109;

[0032] Middle floor 1, rear wheel arch 2, outer panel of rear wheel arch 16, rear door lock catch mounting plate 20, rear floor 21, lower cross beam of middle floor 25; Inner panel of rear side panel 12, longitudinal reinforcement plate of rear side panel 15;

[0033] Outer reinforcement plate of rear wheel arch 26, first support arm 261, second support arm 263, rear suspension spring mounting bracket 19;

[0034] C / D pillar joint connection plate 10, upper reinforcement plate of D pillar 11; Auxiliary cross beam of roof 5, rear cross beam of roof 9, rear longitudinal beam 17, first lower cross beam of rear floor 24, second lower cross beam of rear floor 23;

[0035] C-pillar reinforcement plate 18, D-pillar lower reinforcement plate 13, rear side panel transverse reinforcement plate 14; front reinforcement plate 3 of the rear side panel inner plate, front reinforcement plate 4 of the rear wheel housing, upper cross member 22 of the rear floor, rear reinforcement plate 7 of the rear side panel inner plate, rear reinforcement plate 8 of the rear wheel housing, transverse reinforcement plate 6 of the rear wheel housing. Detailed implementation mode

[0036] The following further describes the implementation mode of the present application in conjunction with the accompanying drawings. The same or similar reference numerals in the drawings always represent the same or similar elements or elements with the same or similar functions.

[0037] In addition, the implementation mode of the present application described below in conjunction with the accompanying drawings is exemplary and is only used to explain the implementation mode of the present application, and cannot be understood as a limitation of the present application.

[0038] In the present application, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature may be that the first feature is directly above or obliquely above the second feature, or simply means that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "under" the second feature may be that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower horizontal height than the second feature.

[0039] Please refer to Figure 1 , Figure 3 and Figure 4 , the rear body structure 100 of the implementation mode of the present application includes a rear side panel inner plate 12, a C-pillar reinforcement plate 18, a rear side panel longitudinal reinforcement plate 15, an outer reinforcement plate 26 of the rear wheel housing, and a rear suspension spring mounting bracket 19. One end of the outer reinforcement plate 26 of the rear wheel housing is connected to the rear suspension spring mounting bracket 19, and the other end is provided with a first support arm 261 and a second support arm 263. The first support arm 261 is connected to the C-pillar reinforcement plate 18, the second support arm 263 is connected to the rear side panel longitudinal reinforcement plate 15, the rear side panel inner plate 12 is connected between the rear side panel longitudinal reinforcement plate 15 and the C-pillar reinforcement plate 18, and the rear suspension spring mounting bracket 19, the outer reinforcement plate 26 of the rear wheel housing, the C-pillar reinforcement plate 18, the rear side panel longitudinal reinforcement plate 15 and the rear side panel inner plate 12 together form an inverted A-shaped multi-channel force transmission structure 101.

[0040] In the rear vehicle body structure 100 of the present application, the inverted A-shaped multi-channel force transmission structure 101 formed by the rear suspension spring mounting bracket 19, the rear wheel housing outer reinforcement plate 26, the C-pillar reinforcement plate 18, the rear side panel longitudinal reinforcement plate 15 and the rear side panel inner plate 12 effectively transmits the impact load of the rear shock absorber and the rear suspension spring tower seat to the upper vehicle body, and the force transmission path is diversified, which solves the problems of excessive concentration of impact loads and cracking of lap welds. At the same time, the upper and lower vehicle bodies are connected and the force transmission path is complete, which is beneficial to improving the bending and torsional stiffness, bending and torsional mode and durability reliability of the whole vehicle.

[0041] The present application is described in detail below with reference to the accompanying drawings.

[0042] Please also read Figure 1 and Figure 2 The rear vehicle body structure 100 includes a middle floor 1, a rear wheel housing 2, a front reinforcement plate of a rear side panel inner plate 3, a front reinforcement plate of a rear wheel housing 4, an auxiliary cross beam of a roof 5, a transverse reinforcement plate of a rear wheel housing 6, a rear reinforcement plate of a rear side panel inner plate 7, a rear reinforcement plate of a rear wheel housing 8, a rear cross beam of a roof 9, a C / D-pillar joint connecting plate 10, an upper reinforcement plate of a D-pillar 11, a rear side panel inner plate 12, a lower reinforcement plate of a D-pillar 13, a transverse reinforcement plate of a rear side panel 14, a longitudinal reinforcement plate of a rear side panel 15, an outer panel of a rear wheel housing 16, a rear longitudinal beam 17, a C-pillar reinforcement plate 18, a rear suspension spring mounting bracket 19, a rear door lock mounting plate 20, a rear floor 21, an upper cross beam of a rear floor 22, a first lower cross beam of a rear floor 24, a second lower cross beam of a rear floor 23, a lower cross beam of a middle floor 25, and an outer reinforcement plate of a rear wheel housing 26.

[0043] The middle floor 1 is located in the vehicle 1000 ( Figure 12 The rear floor 21 is located at the rear of the bottom of the vehicle 1000, the rear floor upper cross beam 22 is located at the rear of the bottom of the vehicle 1000, the rear floor first lower cross beam 24 is located at the rear of the bottom of the vehicle 1000, the rear floor second lower cross beam 23 is located at the rear of the bottom of the vehicle 1000, and is closer to the rear of the vehicle than the rear floor first lower cross beam 24, and the middle floor lower cross beam 25 is located at the middle of the bottom of the vehicle 1000. The middle floor 1 is connected to the middle floor lower cross beam 25. The rear floor 21 is installed between the rear floor first lower cross beam 24 and the rear floor second lower cross beam 23, and between the rear floor second lower cross beam 23 and the rear of the vehicle. The rear floor upper cross beam 22 and the rear floor first lower cross beam 24 correspond to each other in the height direction of the vehicle 1000, and the rear floor cross beam 22 is closer to the top of the vehicle 1000 than the rear floor first lower cross beam 24. That is, in the height direction of the vehicle 1000, the projection of the rear floor upper cross beam 22 and the projection of the rear floor first lower cross beam 24 at least partially overlap, or even completely overlap. Thus, in the direction from the front to the rear of the vehicle, the middle floor 1, the middle floor lower cross beam 25, the rear floor first lower cross beam 24 (the rear floor upper cross beam 22), part of the rear floor 21, the rear floor second lower cross beam 23, and the remaining rear floor 21 are arranged in sequence.

[0044] The top cover auxiliary cross beam 5 and the top cover rear cross beam 9 are located at the top of the vehicle 1000 and are spaced apart from each other. The structures on both sides of the vehicle 1000 are basically symmetrically arranged, that is, the number of the rear wheel housings 2, the front reinforcing plate 3 of the inner panel of the rear side panel, the front reinforcing plate 4 of the rear wheel housing, the transverse reinforcing plate 6 of the rear wheel housing, the rear reinforcing plate 7 of the inner panel of the rear side panel, the rear reinforcing plate 8 of the rear wheel housing, the C / D pillar joint connecting plate 10, the upper reinforcing plate 11 of the D pillar, the inner panel 12 of the rear side panel, the lower reinforcing plate 13 of the D pillar, the transverse reinforcing plate 14 of the rear side panel, the longitudinal reinforcing plate 15 of the rear side panel, the outer panel 16 of the rear wheel housing, the rear longitudinal beam 17, the C pillar reinforcing plate 18, the rear suspension spring mounting bracket 19, the rear door lock catch mounting plate 20, and the outer reinforcing plate 26 of the rear wheel housing is two, and one is distributed on each side of the vehicle 1000. Among them, the rear wheel housing 2 is used to cover the rear wheels of the vehicle 1000, and the outer panel 16 of the rear wheel housing is arranged on the rear wheel housing 2 and is located on the outer side of the vehicle 1000.

[0045] Please refer to Figure 3 and Figure 4 In some embodiments, the rear suspension spring mounting bracket 19, the outer reinforcing plate 26 of the rear wheel housing, the C pillar reinforcing plate 18, the longitudinal reinforcing plate 15 of the rear side panel, and the inner panel 12 of the rear side panel together form an inverted A-shaped multi-channel force transmission structure 101. It should be noted that an inverted A-shaped multi-channel force transmission structure 101 is formed on each side of the vehicle 1000, and the two inverted A-shaped multi-channel force transmission structures 101 can be symmetric about the central axis of the vehicle 1000 in the length direction.

[0046] Specifically, one end of the longitudinal reinforcing plate 15 of the rear side panel is overlapped and aligned with the second support arm 263, and the other end is overlapped with the upper reinforcing plate 11 of the D pillar; one end of the C pillar reinforcing plate 18 is overlapped and aligned with the first support arm 261, and the other end is overlapped with the C / D pillar joint connecting plate 10. In the embodiment of the present application, the rear suspension spring mounting bracket 19, the outer reinforcing plate 26 of the rear wheel housing, the C pillar reinforcing plate 18, the longitudinal reinforcing plate 15 of the rear side panel, and the inner panel 12 of the rear side panel together form an inverted A-shaped multi-channel force transmission structure 101, surrounding the triangular window, so that the impact loads of the rear shock absorber and the rear suspension spring tower seat are effectively transmitted to the upper vehicle body, the force transmission paths are diversified, the problem of over-concentrated impact loads and cracking of the overlapping solder joints is solved, and at the same time, the upper and lower vehicle bodies are coherently connected and the force transmission path is complete, which is beneficial to improving the bending and torsion stiffness, bending and torsion modes and durability and reliability of the whole vehicle.

[0047] Please refer to Figures 3 to 6 In some embodiments, the inverted A-shaped multi-channel force transmission structure 101, the C / D pillar joint connecting plate 10, the top cover auxiliary cross beam 5, the top cover rear cross beam 9, the upper reinforcing plate 11 of the D pillar, the rear longitudinal beam 17, the first lower cross beam 24 of the rear floor, and the second lower cross beam 23 of the rear floor together form an integral inverted A-shaped outer ring structure 102.

[0048] Specifically, the rear suspension spring mounting bracket 19 of the inverted A-shaped multi-channel force transmission structure 101 is connected to the rear longitudinal beam 17. The C-pillar reinforcement plate 18 of the inverted A-shaped multi-channel force transmission structure 101 is connected to one end of the C / D pillar joint connecting plate 10. The other end of the C / D pillar joint connecting plate 10 is connected to the upper D-pillar reinforcement plate 11. The rear side wall longitudinal reinforcement plate 15 is connected to the upper D-pillar reinforcement plate 11. The roof auxiliary cross beam 5 and the roof rear cross beam 9 are spaced apart from each other and are both connected between the two C / D pillar joint connecting plates 10. The first rear floor lower cross beam 24 and the second rear floor lower cross beam 23 are spaced apart from each other and are both connected between the two rear longitudinal beams 17.

[0049] Please refer to Figure 3 and Figure 7 , in some embodiments, the lower D-pillar reinforcement plate 13 and the upper D-pillar reinforcement plate 11 are respectively located at opposite ends of the D-pillar. The two ends of the rear side wall transverse reinforcement plate 14 are respectively connected to the lower D-pillar reinforcement plate 13 and the rear side wall longitudinal reinforcement plate 15. The rear side wall inner panel 12, the rear side wall transverse reinforcement plate 14 and the rear side wall longitudinal reinforcement plate 15 together form an X-shaped C / D pillar connection structure 103.

[0050] In the embodiments of the present application, the X-shaped C / D pillar connection structure 103 formed by the rear side wall inner panel 12, the rear side wall transverse reinforcement plate 14 and the rear side wall longitudinal reinforcement plate 15 establishes a force transmission path between the C and D pillars, which can effectively transmit the collision load suffered by the vehicle body during a rear collision, reduce the deformation of the rear part of the vehicle body, and protect the battery pack from being squeezed. At the same time, the X-shaped C / D pillar connection structure 103 and the inverted A-shaped multi-channel force transmission structure 101 support the corner area of the upper D-pillar reinforcement plate 11 through the rear side wall longitudinal reinforcement plate 15, which can not only reduce the deformation of the tailgate and the skylight frame opening, but also greatly improve the bending and torsion stiffness and bending and torsion modes of the vehicle body, and improve the rear row ride comfort.

[0051] Please refer to Figure 8 and Figure 9 , in some embodiments, the front rear side wall inner panel reinforcement plate 3, the front wheel well reinforcement plate 4, the upper rear floor cross beam 22, the rear rear side wall inner panel reinforcement plate 7, the rear wheel well reinforcement plate 8, the second rear floor lower cross beam 23, and the wheel well transverse reinforcement plate 6 together form an H-shaped multi-channel force transmission structure 105. It should be noted that the two H-shaped multi-channel force transmission structures 105 on both sides of the vehicle 1000 share one upper rear floor cross beam 22 and one second rear floor lower cross beam 23.

[0052] Specifically, both ends of the rear floor upper cross member 22 are respectively connected to one end of the front reinforcement plate 4 of the rear wheel housing. The other end of the front reinforcement plate 4 of the rear wheel housing is connected to the front reinforcement plate 3 of the inner panel of the rear side member. Both ends of the second lower cross member 23 of the rear floor are respectively connected to one end of the rear reinforcement plate 8 of the rear wheel housing. The other end of the rear reinforcement plate 8 of the rear wheel housing is connected to the rear reinforcement plate 7 of the inner panel of the rear side member. The front reinforcement plate 3 of the inner panel of the rear side member and the rear reinforcement plate 7 of the inner panel of the rear side member are both connected to the C / D pillar joint connection plate 10. One end of the transverse reinforcement plate 6 of the rear wheel housing is connected to the front reinforcement plate 4 of the rear wheel housing, and the other end is connected to the rear reinforcement plate 8 of the rear wheel housing.

[0053] In the embodiment of the present application, the front reinforcement plate 3 of the inner panel of the rear side member, the front reinforcement plate 4 of the rear wheel housing, the rear floor upper cross member 22, the rear reinforcement plate 7 of the inner panel of the rear side member, the rear reinforcement plate 8 of the rear wheel housing, the second lower cross member 23 of the rear floor, and the transverse reinforcement plate 6 of the rear wheel housing together form an H-shaped multi-channel force transmission structure 105, which effectively strengthens the local lap joint structure of the rear wheel housing 2, improves the dynamic stiffness of the rear suspension shock absorber mounting point and NVH performance such as the vibration transmission path, and improves the rear row ride comfort. At the same time, the H-shaped multi-channel force transmission structure 105 establishes a force transmission path between the rear floor 21 and the roof cross members (including the rear roof cross member 9 and the roof auxiliary cross member 5), making the upper and lower vehicle bodies coherent and improving the body bending and torsional stiffness and durability reliability.

[0054] Please continue to refer to Figure 8 and Figure 9 , in some embodiments, the H-shaped multi-channel force transmission structure 105, the C / D pillar joint connection plate 10, the roof auxiliary cross member 5, the rear roof cross member 9, and the upper reinforcement plate 11 of the D pillar together form an integrated H-shaped inner ring structure 107.

[0055] In the embodiment of the present application, two H-shaped multi-channel force transmission structures 105 are integrated together through the transverse reinforcement plate 6 of the rear wheel housing to form an integrated H-shaped inner ring structure 107. The integrated H-shaped inner ring structure 107 integrates the entire rear body, making the force transmission path of the entire rear body more coherent and closely combined, and greatly improving the vehicle bending and torsional stiffness, durability reliability, and NVH performance.

[0056] In addition, the integrated H-shaped inner ring structure 107 and the integrated inverted A-shaped outer ring structure 102 are correspondingly arranged. That is, the C-pillar reinforcement plate 18 in the integrated inverted A-shaped outer ring structure 102 corresponds to the front reinforcement plate 3 of the rear side inner panel in the integrated H-shaped inner ring structure 107; the longitudinal reinforcement plate 15 of the rear side in the integrated inverted A-shaped outer ring structure 102 corresponds to the rear reinforcement plate 7 of the rear side inner panel in the integrated H-shaped inner ring structure 107; the integrated inverted A-shaped outer ring structure 102 and the integrated H-shaped inner ring structure 107 share a second lower cross member 23 of the rear floor; the first lower cross member 24 of the rear floor in the integrated inverted A-shaped outer ring structure 102 corresponds to the upper cross member 22 of the rear floor in the integrated H-shaped inner ring structure 107, and the correspondingly positioned components are separated by a partition plate (not shown in the figure). The integrated H-shaped inner ring structure 107 and the integrated inverted A-shaped outer ring structure 102 are arranged inside and outside, with an internal and external combination and corresponding layout, making the force transmission path of the entire rear body more diversified, the rear body structure optimized, and more conducive to the improvement of the vehicle's bending and torsion stiffness, bending and torsion modal performance, rear collision performance, NVH performance, rear row ride comfort, and overall vehicle durability and reliability.

[0057] Please refer to Figure 10 and Figure 11 , in some embodiments, the H-shaped multi-channel force transmission structure on one side, the inverted A-shaped multi-channel force transmission structure on the other side, the C / D-pillar joint connecting plate 10, the roof auxiliary cross member 5, and the roof rear cross member 9 together form an integrated inner and outer ring structure 109. The integrated inner and outer ring structure 109 further diversifies the force transmission path of the entire rear body, optimizes the rear body structure, and is more conducive to the improvement of the vehicle's bending and torsion stiffness, bending and torsion modal performance, rear collision performance, NVH performance, rear row ride comfort, and overall vehicle durability and reliability.

[0058] Please refer to Figure 12 , the embodiment of the present application also provides a vehicle 1000, and the vehicle 1000 includes the rear body structure 100 of any one of the above embodiments. Among them, the vehicle 1000 can be, but is not limited to, a fuel vehicle, a pure electric vehicle, or a hybrid vehicle, etc.

[0059] Please combine Figure 1 and Figure 2 , the vehicle 1000 of the present application has the following advantages:

[0060] First, the inverted A-shaped multi-channel force transmission structure 101 formed by the rear suspension spring mounting bracket 19, the rear wheel housing outer reinforcement plate 26, the C-pillar reinforcement plate 18, the rear side panel longitudinal reinforcement plate 15 and the rear side panel inner plate 12 effectively transmits the impact load of the rear shock absorber and the rear suspension spring tower seat to the upper body, and the force transmission path is diversified, which solves the problem of excessive concentration of impact load and cracking of lap welding points. At the same time, the upper and lower bodies are connected and the force transmission path is complete, which is conducive to improving the bending and torsional stiffness, bending and torsional mode and durability reliability of the whole vehicle;

[0061] Second, the X-shaped C / D-pillar connection structure 103 formed by the rear side inner panel 12, the rear side transverse reinforcement panel 14 and the rear side longitudinal reinforcement panel 15 establishes a force transmission path between the C and D pillars, which can effectively transmit the collision load on the vehicle body during a rear collision, reduce the deformation of the rear body, and protect the battery pack from being squeezed;

[0062] Third, the inverted A-shaped multi-channel force transmission structure 101 and the X-shaped C / D-pillar connection structure 103 support the corner area of the D-pillar through the rear side longitudinal reinforcement plate 15, which can not only reduce the deformation of the tailgate and the sunroof frame, but also greatly improve the body bending and torsional rigidity and bending and torsional mode, and improve the rear seat comfort;

[0063] Fourth, the H-shaped multi-channel force transmission structure 105 effectively strengthens the lap joint structure of the rear wheel housing 2, improves the NVH performance such as the rear suspension shock absorber installation point rigidity and vibration transmission path, and improves the rear seat riding comfort. At the same time, the H-shaped multi-channel force transmission structure 105 establishes a force transmission path between the rear floor 21 and the roof crossbeam, making the upper and lower body connected, improving the body bending and torsional rigidity and durability reliability;

[0064] Fifth, the inverted A-shaped multi-channel force transmission structure 101 and the H-shaped multi-channel force transmission structure 105 respectively form an integrated inverted A-shaped outer ring structure and an integrated H-shaped inner ring structure with the rear floor upper crossbeam 22, the rear floor lower crossbeam, the roof rear crossbeam 9, and the roof auxiliary crossbeam 5, one inside and one outside, making the entire rear body force transmission path more coherent and closely integrated, greatly improving the vehicle's bending and torsional stiffness, durability reliability and NVH performance.

[0065] In the description of this specification, the description with reference to terms such as "certain embodiments", "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0066] In addition, the terms "first" and "second" are used only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of the said features. In the description of this application, "a plurality" means at least two, such as two, three, unless otherwise specifically defined.

[0067] Although the embodiments of this application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting this application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of this application. The scope of this application is defined by the claims and their equivalents.

Claims

1. A rear body structure, characterized in that, Comprising: Inner rear quarter panel, C-pillar reinforcement plate, longitudinal rear quarter reinforcement plate, outer reinforcement plate of rear wheel housing, and rear suspension spring mounting bracket; One end of the outer reinforcement plate of the rear wheel housing is connected to the rear suspension spring mounting bracket, and the other end is provided with a first support arm and a second support arm. The first support arm is connected to the C-pillar reinforcement plate, the second support arm is connected to the longitudinal rear quarter reinforcement plate, the inner rear quarter panel is connected between the longitudinal rear quarter reinforcement plate and the C-pillar reinforcement plate, and the rear suspension spring mounting bracket, the outer reinforcement plate of the rear wheel housing, the C-pillar reinforcement plate, the longitudinal rear quarter reinforcement plate, and the inner rear quarter panel together form an inverted A-shaped multi-channel force transmission structure; The number of the inverted A-shaped multi-channel force transmission structures is two, and the two inverted A-shaped multi-channel force transmission structures are symmetrically arranged with respect to the central axis of the vehicle in the length direction.

2. The rear body structure according to claim 1, characterized in that, Further comprising: Upper D-pillar reinforcement plate, one end of the longitudinal rear quarter reinforcement plate is lapped and aligned with the second support arm, and the other end is lapped with the upper D-pillar reinforcement plate; And C / D-pillar joint connecting plate, one end of the C-pillar reinforcement plate is lapped and aligned with the first support arm, and the other end is lapped with the C / D-pillar joint connecting plate.

3. The rear body structure according to claim 2, characterized in that, Further comprising a roof auxiliary cross beam, a roof rear cross beam, a rear longitudinal beam, a first lower rear floor cross beam, and a second lower rear floor cross beam; The inverted A-shaped multi-channel force transmission structure, the C / D-pillar joint connecting plate, the roof auxiliary cross beam, the roof rear cross beam, the upper D-pillar reinforcement plate, the rear longitudinal beam, the first lower rear floor cross beam, and the second lower rear floor cross beam together form an integrated inverted A-shaped outer ring structure.

4. The rear body structure according to claim 3, characterized in that, The rear suspension spring mounting bracket is connected to the rear longitudinal beam, one end of the C-pillar reinforcement plate is connected to one end of the C / D-pillar joint connecting plate, the other end of the C / D-pillar joint connecting plate is connected to the upper D-pillar reinforcement plate, the longitudinal rear quarter reinforcement plate is connected to the upper D-pillar reinforcement plate, the roof auxiliary cross beam and the roof rear cross beam are spaced apart from each other and are both connected between the two C / D-pillar joint connecting plates, and the first lower rear floor cross beam and the second lower rear floor cross beam are spaced apart from each other and are both connected between the two rear longitudinal beams.

5. The rear body structure according to claim 2, characterized in that, Further comprising: Lower D-pillar reinforcement plate, the lower D-pillar reinforcement plate and the upper D-pillar reinforcement plate are respectively located at opposite ends of the D-pillar; And Transverse rear quarter reinforcement plate, both ends of the transverse rear quarter reinforcement plate are respectively connected to the lower D-pillar reinforcement plate and the longitudinal rear quarter reinforcement plate; The inner rear quarter panel, the transverse rear quarter reinforcement plate, and the longitudinal rear quarter reinforcement plate together form an X-shaped C / D-pillar connection structure.

6. The rear body structure according to claim 1, characterized in that, Further comprising a front reinforcement plate of the inner rear quarter panel, a front reinforcement plate of the rear wheel housing, an upper rear floor cross beam, a rear reinforcement plate of the inner rear quarter panel, a rear reinforcement plate of the rear wheel housing, a second lower rear floor cross beam, and a transverse reinforcement plate of the rear wheel housing; The front reinforcement plate of the inner rear quarter panel, the front reinforcement plate of the rear wheel housing, the upper rear floor cross beam, the rear reinforcement plate of the inner rear quarter panel, the rear reinforcement plate of the rear wheel housing, the second lower rear floor cross beam, and the transverse reinforcement plate of the rear wheel housing together form an H-shaped multi-channel force transmission structure.

7. The rear body structure according to claim 6, characterized in that, Further comprising a C / D-pillar joint connecting plate; Both ends of the rear floor upper cross member are respectively connected to one end of the front reinforcement plate of the rear wheel housing, and the other end of the front reinforcement plate of the rear wheel housing is connected to the front reinforcement plate of the inner panel of the rear side panel; Both ends of the second lower cross member of the rear floor are respectively connected to one end of the rear reinforcement plate of the rear wheel housing, and the other end of the rear reinforcement plate of the rear wheel housing is connected to the rear reinforcement plate of the inner panel of the rear side panel; The front reinforcement plate of the inner panel of the rear side panel and the rear reinforcement plate of the inner panel of the rear side panel are both connected to the C / D pillar joint connection plate; one end of the transverse reinforcement plate of the rear wheel housing is connected to the front reinforcement plate of the rear wheel housing, and the other end is connected to the rear reinforcement plate of the rear wheel housing.

8. The rear body structure according to claim 6, characterized in that, It further includes: A C / D pillar joint connection plate, a roof auxiliary cross member, a roof rear cross member, and an upper reinforcement plate of the D pillar. The roof auxiliary cross member and the roof rear cross member are spaced apart from each other and are both connected between the two C / D pillar joint connection plates; The H-shaped multi-channel force transmission structure, the C / D pillar joint connection plate, the roof auxiliary cross member, the roof rear cross member, and the upper reinforcement plate of the D pillar jointly form an integral H-shaped inner ring structure.

9. The rear body structure according to claim 8, characterized in that, The H-shaped multi-channel force transmission structure on one side, the inverted A-shaped multi-channel force transmission structure on the other side, the C / D pillar joint connection plate, the roof auxiliary cross member, and the roof rear cross member jointly form an integral inner and outer ring structure.

10. A vehicle, characterized in that, It includes the rear body structure according to any one of claims 1-9.

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