Vehicle body rear shock absorber mounting structure and vehicle

Abstract

The invention provides a vehicle body rear shock absorber mounting structure. The vehicle body rear shock absorber mounting structure comprises a rear wheel cover assembly, a C column assembly, a shelf connecting assembly and a shock absorber mounting assembly. The shelf connecting assembly and the rear wheel cover assembly are both fixedly connected with the C column assembly in the Y direction of the vehicle body, the shelf connecting assembly and the shock absorber mounting assembly are both fixedly connected with the rear wheel cover assembly, and the shock absorber mounting assembly is fixedly connected with the shelf connecting assembly. Wherein the rear wheel cover assembly comprises a wheel cover inner plate and a wheel cover outer plate which are connected into a whole in a matched mode, the wheel cover inner plate is provided with a weight reduction clearance area, and the shock absorber installation assembly is connected with the boundary of the weight reduction clearance area in a matched mode. According to the vehicle body rear shock absorber mounting structure, the strength and rigidity of the connecting structure of the shock absorber mounting assembly are improved, the NVH performance and the driving comfort degree of a vehicle are improved, the material redundancy of a wheel cover inner plate can be reduced, the weight of the wheel cover inner plate can be reduced, and therefore the light weight index of the vehicle is promoted.

Description

Technical Field

[0001] The invention belongs to the technical field of vehicle body structures, and in particular relates to a vehicle body rear shock absorber mounting structure. Background Art

[0002] The main function of the rear shock absorber mounting structure is to provide a mounting point for the rear shock absorber to meet the structural stiffness and strength performance requirements of the rear excitation source area of ​​the vehicle. Fig.14 and Fig.15 The structure shown is composed of main parts such as a rear wheel housing outer panel 10', a rear wheel housing inner panel 20', a rear shock absorber support 30', a rear shock absorber support upper reinforcement plate 40', a C-pillar connecting plate 50', and a C-pillar lower connecting plate 60'. The rear wheel housing inner panel 20' and the rear wheel housing outer panel 10' are matched and connected to form an integral wheel package, the rear shock absorber support 30' is matched and connected to the top area of ​​the rear wheel housing inner panel 20' to form a shock absorber mounting point, and the C-pillar lower connecting plate 60' is connected to the rear wheel housing inner panel 20', and the C-pillar connecting plate 50' is connected to the rear wheel housing outer panel 10' to realize Z-direction force transmission to the C-pillar.

[0003] The above-mentioned structural form currently used mainly has the following defects: first, the rigidity of the rear shock absorber installation area is relatively weak. Under bumpy road conditions, the excitation source will be transmitted to the cab along the rear wheel cover area, resulting in obvious road noise, affecting the vehicle's NVH performance and riding comfort; second, the rear shock absorber support is directly connected to the inner panel of the rear wheel cover, and the two are not effectively integrated in structure, resulting in redundant material waste and heavy weight, which is not conducive to achieving the vehicle's lightweight indicators. Summary of the invention

[0004] An embodiment of the present invention provides a vehicle body rear shock absorber mounting structure, which aims to improve the NVH performance and ride comfort of the vehicle and promote the vehicle to achieve lightweight indicators.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: to provide a vehicle body rear shock absorber mounting structure, including a rear wheel cover assembly, a C-pillar assembly, a storage plate connecting assembly, and a shock absorber mounting assembly; the storage plate connecting assembly and the rear wheel cover assembly are both fixedly connected to the C-pillar assembly along the Y direction of the vehicle body, the storage plate connecting assembly and the shock absorber mounting assembly are both fixedly connected to the rear wheel cover assembly, and the shock absorber mounting assembly is fixedly connected to the storage plate connecting assembly; wherein, the rear wheel cover assembly includes a wheel cover inner plate and a wheel cover outer plate that are matched and connected as one, a weight reduction and air avoidance area is provided on the wheel cover inner plate, and the shock absorber mounting assembly is matched and connected to the boundary of the weight reduction and air avoidance area.

[0006] In one possible implementation, the shelf plate connecting assembly, the wheel arch inner plate and the shock absorber mounting assembly together form a closed load-bearing cavity, and the shock absorber mounting assembly divides the load-bearing cavity into at least two linked load-bearing chambers along the Y direction of the vehicle body, one of which is a shock absorber mounting chamber suitable for accommodating a shock absorber connector.

[0007] In some embodiments, the shelf board connection assembly includes a shelf board connection top plate, a shelf board front connection plate and a shelf board lower connection plate spaced apart along the X direction of the vehicle body; the shock absorber mounting assembly includes a shock absorber support located below the shelf board connection top plate, a support upper reinforcement plate fixedly connected to the upper part of the shock absorber support, and a support lower reinforcement plate fitted and fixed to the inner plate of the wheel housing and located below the side of the shock absorber support;

[0008] Among them, the shock absorber support is matched and connected with the boundary of the weight reduction and air avoidance area, the front connecting plate of the shelf plate, the top plate of the shelf plate, the lower connecting plate of the shelf plate, the shock absorber support and the inner plate of the wheel arch are matched and connected in sequence to form a load-bearing cavity; the upper reinforcing plate of the support and the top plate of the shelf plate are fixedly connected along the Z direction of the vehicle body, and the upper reinforcing plate of the support, the shock absorber support and the top plate of the shelf plate together form a shock absorber installation chamber.

[0009] Exemplarily, the upper reinforcement plate of the support is a semi-closed box-shaped structure, which includes a first mounting mating surface fixedly attached to the shock absorber support, a second mounting mating surface fixedly attached to the top plate connected to the shelf plate along the Z direction, and a Z-direction supporting surface transitionally connected between the first mounting mating surface and the second mounting mating surface;

[0010] Among them, a shock absorber connector is provided on the first mounting mating surface, and both ends of the first mounting mating surface are provided with first folded edges bent upward, and both ends of the Z-direction supporting surface are respectively provided with second folded edges overlapped and fixed with one of the first folded edges.

[0011] For example, an inner plate reinforcement plate is provided on the inner plate of the wheel housing, the inner plate reinforcement plate is located between the front connecting plate of the shelf plate and the lower connecting plate of the shelf plate, and the upper boundary is connected to the top connecting plate of the shelf plate;

[0012] Among them, the shelf plate connecting top plate, the shelf plate front connecting plate, the shelf plate lower connecting plate, the support reinforcement plate, the wheel house inner plate and the inner plate reinforcement plate together form a shelf plate connecting chamber, and the shelf plate connecting chamber has a port in the upward direction of the vehicle body Y, and a connecting support plate is sealed in the port.

[0013] In one possible implementation, an X-axis support frame is provided in the shelf board connection chamber, one end of the X-axis support frame is fixedly connected to the inner plate reinforcement plate, and the other end is fixedly connected to the front connection plate of the shelf board, and the X-axis support frame divides at least part of the space in the shelf board connection chamber into two upper and lower superimposed load-bearing cavities.

[0014] In some embodiments, the connecting support plate includes a first flange that is fit and fixed to the top plate of the shelf board, a second flange that is fit and fixed to the front connecting plate of the shelf board, and two third flanges that are respectively fit and fixed at different positions of the inner plate reinforcement plate, wherein one of the third flanges is arranged opposite to the first flange, and the other third flange is arranged opposite to the second flange.

[0015] Exemplarily, the C-pillar assembly includes a C-pillar inner panel, the lower boundary of the C-pillar inner panel, the upper boundary of the wheel house outer panel, and the shock absorber support, which are overlapped and fixed together along the Y direction of the vehicle body; a C-pillar lower connecting plate is provided on the C-pillar inner panel, and the upper and lower ends of the C-pillar lower connecting plate are bent to form a groove-shaped structure that is recessed toward the outer side of the vehicle body along the Y direction, wherein a first bent surface located at the upper end of the C-pillar lower connecting plate is fit and fixed to the C-pillar inner panel, and a second bent surface located at the lower end of the C-pillar lower connecting plate is fit and fixed to the top plate of the shelf plate.

[0016] For example, the weight-reducing and air-avoiding area extends from the middle of the top surface of the wheel arch inner panel to the upper edge of the wheel arch inner panel to form an open surrounding boundary; part of the boundary of the shock absorber mounting assembly located in the weight-reducing and air-avoiding area is matched and connected with the open surrounding boundary, and the remaining boundary of the shock absorber mounting assembly exposed outside the open surrounding boundary is matched and connected with the wheel arch outer panel.

[0017] The beneficial effect of the vehicle body rear shock absorber mounting structure provided by the present invention is that compared with the prior art, in the vehicle body rear shock absorber mounting structure of the present invention, the shock absorber mounting assembly is connected to the storage plate connecting assembly on the basis of being connected to the rear wheel cover assembly, and the storage plate connecting assembly is also connected to the C-pillar assembly and the rear wheel cover assembly, and the storage plate connecting assembly can be used for collaborative load-bearing, thereby improving the strength and rigidity of the connection structure of the shock absorber mounting assembly, thereby reducing the vibration energy transmission sensitivity of the excitation source area, thereby reducing the road noise in the vehicle, and improving the vehicle's NVH performance and driving comfort; in addition, by arranging a weight-reducing and air-avoiding area on the wheel cover inner panel, and then matching and connecting the shock absorber mounting assembly with the wheel cover inner panel along the boundary of the weight-reducing and air-avoiding area to achieve structural integration, on the basis of ensuring the surface integrity of the wheel cover inner panel, the material redundancy of the wheel cover inner panel can be reduced, and the weight of the wheel cover inner panel can be reduced, thereby promoting the vehicle to achieve lightweight indicators, especially for high-performance and low-weight models, which can significantly enhance their market competitiveness.

[0018] An embodiment of the present invention further provides a vehicle, comprising the above-mentioned vehicle body rear shock absorber mounting structure.

[0019] Since the vehicle provided by the present invention adopts the above-mentioned vehicle body rear shock absorber mounting structure, it has the same beneficial effects as the above-mentioned vehicle body rear shock absorber mounting structure, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1A schematic diagram of the axle-side structure of the rear shock absorber mounting structure of the vehicle body provided by an embodiment of the present invention based on the perspective of the vehicle body exterior;

[0021] Figure 2 For along Figure 1 Schematic diagram of the cross-section structure along the AA line;

[0022] Figure 3 Schematic diagram of the axle-side structure of the rear shock absorber mounting structure of the vehicle body provided by the embodiment of the present invention based on the perspective of the interior of the vehicle body Figure 1 ;

[0023] Figure 4 Schematic diagram of the connection structure between the shock absorber support and the reinforcement plate on the support in an embodiment of the present invention;

[0024] Figure 5 Schematic diagram of the axle-side structure of the rear shock absorber mounting structure of the vehicle body provided by the embodiment of the present invention based on the perspective of the interior of the vehicle body Figure 2 ;

[0025] Figure 6 A schematic diagram of the three-dimensional structure of a reinforcing plate on a support used in an embodiment of the present invention;

[0026] Figure 7 For along Figure 3 Schematic diagram of the cross-section structure along the BB line;

[0027] Figure 8 A schematic diagram of the three-dimensional structure of the vehicle body rear shock absorber mounting structure provided by an embodiment of the present invention when the storage plate connecting the top plate is removed;

[0028] Fig. 9 A structural schematic diagram of a shelf connecting assembly provided by an embodiment of the present invention from a main perspective;

[0029] Fig.10 For along Fig. 9 Schematic diagram of the cross-section structure of the CC line;

[0030] Fig.11 A schematic diagram of the three-dimensional structure of the connection support plate used in an embodiment of the present invention;

[0031] Fig.12 For along Figure 5 Schematic diagram of the cross-section structure of the middle DD line;

[0032] Fig.13 A schematic diagram of the structure of a wheel housing inner plate used in an embodiment of the present invention;

[0033] Fig.14 It is a structural schematic diagram of the vehicle body rear shock absorber installation structure adopted in the prior art based on the external perspective of the vehicle body;

[0034] Fig.15This is a structural schematic diagram of the vehicle body rear shock absorber installation structure adopted in the prior art based on the perspective of the interior of the vehicle body.

[0035] In the figure: 10, rear wheel housing assembly; 11, wheel housing inner plate; 110, weight reduction and air avoidance area; 1101, open and surrounding boundary; 111, inner plate reinforcement plate; 12, wheel housing outer plate; 121, outer plate reinforcement plate; 20, C-pillar assembly; 21, C-pillar inner plate; 221, first bending surface; 22, C-pillar lower connecting plate; 222, second bending surface; 30, shelf board connecting assembly; 31, shelf board connecting top plate; 32, shelf board front connecting plate; 33, shelf board lower connecting plate; 40, shock absorber mounting assembly; 41. shock absorber support; 42. upper reinforcement plate of support; 421. first mounting mating surface; 4211. first folding edge; 422. second mounting mating surface; 423. Z-direction support surface; 4231. second folding edge; 43. lower reinforcement plate of support; 50. load-bearing cavity; 51. shock absorber mounting chamber; 52. shelf plate connecting chamber; 521. connecting support plate; 5211. first flange; 5212. second flange; 5213. third flange; 522. X-direction support frame; 60. shock absorber connecting piece;

[0036] 10', rear wheel housing outer panel; 20', rear wheel housing inner panel; 30', rear shock absorber support; 40', rear shock absorber support upper reinforcement plate; 50', C-pillar connecting plate; 60', C-pillar lower connecting plate. DETAILED DESCRIPTION

[0037] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0038] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or indirectly on the other element. It should be understood that the terms "upper", "lower", "front", "rear", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0039] The following descriptions involving "X direction", "Y direction" and "Z direction" are all in reference to the length, width and height of the vehicle body, among which "X direction" refers to the length direction of the vehicle body, "Y direction" refers to the width direction of the vehicle body, and "Z direction" refers to the height direction of the vehicle body.

[0040] Please also read Figures 1 to 13Now, the vehicle body rear shock absorber mounting structure provided by the present invention is described. The vehicle body rear shock absorber mounting structure includes a rear wheel cover assembly 10, a C-pillar assembly 20, a storage plate connecting assembly 30, and a shock absorber mounting assembly 40; the storage plate connecting assembly 30 and the rear wheel cover assembly 10 are both fixedly connected to the C-pillar assembly 20 along the Y direction of the vehicle body, the storage plate connecting assembly 30 and the shock absorber mounting assembly 40 are both fixedly connected to the rear wheel cover assembly 10, and the shock absorber mounting assembly 40 is fixedly connected to the storage plate connecting assembly 30; wherein, the rear wheel cover assembly 10 includes a wheel cover inner plate 11 and a wheel cover outer plate 12 which are matched and connected as one body, a weight reduction and air avoidance area 110 is provided on the wheel cover inner plate 11, and the shock absorber mounting assembly 40 is matched and connected to the boundary of the weight reduction and air avoidance area 110.

[0041] It should be noted that the fixed connection in this embodiment can be a screw connection or a riveted fixation method, or a welding fixation method; wherein, in the vehicle body layout, since the C-pillar assembly 20 is located above the shelf board connection assembly 30, the rear wheel cover assembly 10 is located below the shelf board connection assembly 30, and the main body of the shock absorber mounting assembly 40 is connected to the wheel cover inner plate 11, which is also located below the shelf board connection assembly 30, the C-pillar assembly 20 can be fixedly connected to the shelf board connection assembly 30 and the rear wheel cover assembly 10 based on their respective connection points, and the shelf board assembly is fixedly connected to the rear wheel cover assembly 10 at another matching connection point. Finally, the shock absorber mounting assembly 40 is connected to the shelf plate connecting assembly 30. Based on the above connection structure, the vibration excitation source of the shock absorber mounting assembly 40 can not only be transmitted upward to the C-pillar assembly 20 through the rear wheel cover assembly 10, but also can be transmitted to the C-pillar assembly 20 through the shelf plate connecting assembly 30, which can not only improve the strength and stiffness performance of the shelf plate connecting assembly 30, but also increase the force transmission path to the C-pillar assembly 20, relieve the pressure of the rear wheel cover assembly 10, and make the rear wheel cover assembly 10 and the shelf plate connecting assembly 30 work together to bear the force, thereby reducing the vibration energy transmission sensitivity of the excitation source area at the rear of the vehicle body, thereby reducing the noise inside the vehicle and improving driving comfort.

[0042] It should be understood that the reason why the weight-reducing and air-avoiding area 110 is provided on the wheel arch inner panel 11 and fixedly connected to the shock absorber mounting assembly 40 in the present embodiment is that if the wheel arch inner panel 11 still adopts the conventional structure, the shock absorber mounting assembly 40 will cover a part of the wheel arch inner panel 11, and this part of the area actually has no practical effect on the structural strength and rigidity, and belongs to the structural redundant area. Therefore, the material of the redundant area is removed (actually, the material is not removed after the entire wheel arch inner panel 11 is processed, but there is no material in this area when the wheel arch inner panel 11 is processed and formed) to form the weight-reducing and air-avoiding area 110.

[0043] Specifically, the boundary of the weight-reducing and air-avoiding area 110 formed on the wheel arch inner panel 11 is overlapped and matched with the main boundary of the shock absorber mounting assembly 40, and then they are welded and fixed to achieve structural integration of the two. There are two forms here. One is that the boundary of the weight-reducing and air-avoiding area 110 is a closed boundary, that is, the area is a hole-type structure. In this case, the shock absorber mounting assembly 40 is connected to the boundary of the weight-reducing and air-avoiding area 110 to completely block the area, thereby ensuring the surface integrity of the wheel arch inner panel 11; the other is that the boundary of the weight-reducing and air-avoiding area 110 is an open boundary, that is, the area extends to the boundary of the wheel arch inner panel 11 to form a U-shaped structure. In this case, the shock absorber mounting assembly 40 is connected to the boundary of the weight-reducing and air-avoiding area 110 to ensure the surface integrity of the wheel arch inner panel 11. At the same time, the part of the shock absorber mounting assembly 40 that exposes the boundary of the area can form a matching connection with the wheel arch outer panel 12, which is beneficial to further improve the connection strength and rigidity between the shock absorber mounting assembly 40 and the rear wheel arch assembly 10.

[0044] Compared with the prior art, the vehicle body rear shock absorber mounting structure provided in the present embodiment is characterized in that the shock absorber mounting assembly 40 is connected to the storage plate connecting assembly 30 on the basis of being connected to the rear wheel cover assembly 10, and the storage plate connecting assembly 30 is also connected to the C-pillar assembly 20 and the rear wheel cover assembly 10, and the storage plate connecting assembly 30 can be used for collaborative load bearing, thereby improving the strength and rigidity of the connection structure of the shock absorber mounting assembly 40, thereby reducing the vibration energy transmission sensitivity of the excitation source area, thereby reducing the road noise in the vehicle, and improving the NVH performance and driving comfort of the vehicle; in addition, by providing a weight-reducing and air-avoiding area 110 on the wheel cover inner panel 11, and then matching and connecting the shock absorber mounting assembly 40 with the wheel cover inner panel 11 along the boundary of the weight-reducing and air-avoiding area 110 to achieve structural integration, on the basis of ensuring the surface integrity of the wheel cover inner panel 11, the material redundancy of the wheel cover inner panel 11 can be reduced, and the weight of the wheel cover inner panel 11 can be reduced, thereby promoting the vehicle to achieve lightweight indicators, especially for high-performance and low-weight models, which can significantly improve their market competitiveness.

[0045] In some embodiments, see Figures 1 to 10 The storage plate connecting assembly 30, the wheel house inner plate 11 and the shock absorber mounting assembly 40 together form a closed load-bearing cavity 50, and the shock absorber mounting assembly 40 divides the load-bearing cavity 50 into at least two linked load-bearing chambers along the Y direction of the vehicle body, one of which is a shock absorber mounting chamber 51 suitable for accommodating the shock absorber connector 60.

[0046] It should be noted that since the load-bearing cavity 50 is a closed structure, the shock absorber installation chamber 51 located inside the load-bearing cavity 50 is also a closed structure. In order to meet the installation operation requirements of the shock absorber, the shock absorber connecting piece 60 can be welded to the inner wall of the shock absorber installation chamber 51 using a projection weld nut, and a through hole aligned with the projection weld nut is opened on the inner wall of the shock absorber installation chamber 51, so that bolts can be inserted from outside the cavity into the cavity and screwed together with the projection weld nut to complete the fixation of the shock absorber.

[0047] On the basis that the closed load-bearing cavity 50 itself has high structural strength and rigidity, the load-bearing cavity 50 can be divided into two or more chambers by connecting the shock absorber mounting assembly 40 with the shelf plate connecting assembly 30, which not only can further improve the overall structural strength and rigidity of the load-bearing cavity 50, but also the shock absorber mounting chamber 51 can disperse and transfer the vibration energy to other chambers after being vibrated by the shock absorber, thereby realizing multi-cavity linkage load-bearing and reducing the sensitivity of vibration energy transmission.

[0048] In this example, see Figure 2 and Figure 7 The shelf connecting assembly 30 includes a shelf connecting top plate 31, a shelf front connecting plate 32 and a shelf lower connecting plate 33 spaced apart along the X direction of the vehicle body; the shock absorber mounting assembly 40 includes a shock absorber support 41 located below the shelf connecting top plate 31, a support upper reinforcing plate 42 fixedly connected to the shock absorber support 41, and a support lower reinforcing plate 43 fixedly fixed to the wheel house inner plate 11 and located below the shock absorber support 41; wherein, the shock absorber The shock absorber support 41 is matched and connected with the boundary of the weight-reducing and air-avoiding area 110, and the front connecting plate 32 of the shelf plate, the connecting top plate 31 of the shelf plate, the lower connecting plate 33 of the shelf plate, the shock absorber support 41 and the inner plate 11 of the wheel arch are matched and connected in sequence to form a load-bearing cavity 50; the upper reinforcing plate 42 of the support and the connecting top plate 31 of the shelf plate are fixedly connected along the Z direction of the vehicle body, and the upper reinforcing plate 42 of the support, the shock absorber support 41 and the connecting top plate 31 of the shelf plate together form a shock absorber installation chamber 51.

[0049] The shelf board connecting top plate 31 mainly supports and connects the end of the shelf board body, so it is connected to the wheel house inner plate 11 in a horizontal or nearly horizontal state, and the shelf board front connecting plate 32 is fixedly connected to the front end of the shelf board connecting top plate 31 and is in a state of extending obliquely downward. The shelf board connecting top plate 31 is connected to the shelf board lower connecting plate 33 near its own rear end, so the shelf board lower connecting plate 33 is located directly below the shelf board connecting top plate 31 and is in a state of extending downward. As a result, the three are enclosed as a whole to form a semi-enclosed space with the opening facing downward, and the downward open mouth of the semi-enclosed space can be blocked by the wheel house inner plate 11 to form a load-bearing cavity 50. It should be understood that the weight-reducing and air-avoiding areas 110 at the mouth of the semi-enclosed space are relative, so the shock absorber support 41 is also It plays the role of sealing the semi-enclosed space, thereby allowing the upper reinforcing plate 42 of the support to extend upward inside the load-bearing cavity 50 and be fixed in the Z direction to the top plate 31 connected to the shelf plate, so that the upper reinforcing plate 42 of the support is used to separate the shock absorber installation chamber 51 inside the load-bearing cavity 50, and obtain a high-strength structure with multi-cavity linkage load-bearing; in addition, since the surface of the wheel cover inner panel 11 located on the side of the shock absorber support 41 is a downward inclined surface (equivalent to the side wall of the wheel cover), and in order to improve the structural strength of the inner wheel cover located on the side of the weight-reducing and air-avoiding area 110, the lower reinforcing plate 43 of the support is fitted and fixed on the wheel cover inner panel 11. Based on the requirement of fitting and matching with the surface of the wheel cover inner panel 11, the lower reinforcing plate 43 of the support is actually located on the lower side of the shock absorber support 41, thereby forming a Z-direction support for the shock absorber support 41.

[0050] Please note that Figure 4 , Figure 6 and Figure 7 The support upper reinforcement plate 42 used in this embodiment is a semi-closed box-type structure, which includes a first mounting mating surface 421 that is fitted and fixed to the shock absorber support 41, a second mounting mating surface 422 that is fitted and fixed to the top plate 31 of the shelf plate along the Z direction, and a Z-direction support surface 423 that is transitionally connected between the first mounting mating surface 421 and the second mounting mating surface 422; wherein, a shock absorber connector 60 is provided on the first mounting mating surface 421, and both ends of the first mounting mating surface 421 are provided with a first folded edge 4211 that is bent upward, and both ends of the Z-direction support surface 423 are respectively provided with a second folded edge 4231 that is overlapped and fixed with one of the first folded edges 4211.

[0051] By setting the first mounting mating surface 421, the mating area with the shock absorber support 41 can be increased, thereby reducing the stress concentration of the shock absorber support 41. Similarly, by setting the second mounting mating surface 422, the mating area with the top plate 31 connected to the shelf plate can be increased, thereby avoiding local stress concentration at the connection position of the shelf plate and the top plate 31, thereby improving the overall structural strength and rigidity of the load-bearing cavity 50. At the same time, in order to improve the structural strength and rigidity of the support upper reinforcement plate 42 itself, folding structures are respectively provided at both ends of the first mounting mating surface 421 and the Z-direction support surface 423 for connection, that is, the first folding edge 4211 and the second folding edge 4231 are overlapped and fixed together, and specifically, the two can be welded and fixed, so that the support upper reinforcement plate 42 forms a semi-closed box shape in structure, thereby improving its bearing capacity.

[0052] Furthermore, in this embodiment, the first mounting mating surface 421 and the shock absorber support 41 are fixed by welding after being fitted together, and the second mounting mating surface 422 and the shelf connecting top plate 31 are fixed by screwing after being fitted together.

[0053] Some possible implementations include: Figures 9 to 11 An inner panel reinforcement plate 111 is provided on the wheel house inner panel 11, and the inner panel reinforcement plate 111 is located between the shelf board front connecting plate 32 and the shelf board lower connecting plate 33, and the upper boundary is connected to the shelf board connecting top plate 31; wherein, the shelf board connecting top plate 31, the shelf board front connecting plate 32, the shelf board lower connecting plate 33, the support reinforcement plate, the wheel house inner panel 11 and the inner panel reinforcement plate 111 together form a shelf board connecting chamber 52, and the shelf board connecting chamber 52 has a port in the upward direction of the vehicle body Y, and a connecting support plate 521 is sealed in the port.

[0054] It should be understood that the shelf connecting chamber 52 is actually the remaining space inside the load-bearing chamber 50 after removing the space occupied by the shock absorber installation chamber 51. Figure 8 understand.

[0055] The function of the inner panel reinforcement plate 111 is, on the one hand, to improve the strength of the wheel arch inner panel 11, and on the other hand, to serve as the Z-direction support structure of the shelf plate connecting chamber 52. In order to ensure the structural strength and stiffness performance of the shelf plate connecting chamber 52 itself, the port of the shelf plate connecting chamber 52 is blocked by a connecting support plate 521 to form a closed cavity structure, which can not only improve the Z-direction force transmission support stiffness and strength of the shelf plate connecting top plate 31 to the reinforcing plate 42 on the support, but also improve the multi-cavity linkage load-bearing effect, reduce the vibration energy transmission sensitivity of the shock absorber support 41, and thus improve the NVH performance of the whole vehicle.

[0056] In some embodiments, Fig.10As shown, an X-axis support frame 522 is provided in the above-mentioned shelf board connecting chamber 52, one end of the X-axis support frame 522 is fixedly connected to the inner plate reinforcement plate 111, and the other end is fixedly connected to the shelf board front connecting plate 32, and the X-axis support frame 522 divides at least part of the space in the shelf board connecting chamber 52 into two upper and lower superimposed load-bearing cavities.

[0057] By arranging an X-direction support frame 522 inside the shelf board connecting chamber 52, an X-direction force transmission support can be formed between the shelf board front connecting plate 32 and the inner plate reinforcing plate 111. On the one hand, the structural strength and rigidity of the shelf board connecting chamber 52 in the X-direction of the vehicle body can be improved. On the other hand, the shelf board connecting chamber 52 can be separated into upper and lower parts, thereby forming a multi-cavity structure with upper and lower superimposed loads, thereby reducing the transmission sensitivity of vibration energy.

[0058] Specifically, see Fig. 9 and Fig.11 In this embodiment, the optional structure of the connecting support plate 521 is that the connecting support plate 521 includes a first flange 5211 that is fixedly attached to the shelf board connecting top plate 31, a second flange 5212 that is fixedly attached to the shelf board front connecting plate 32, and two third flanges 5213 that are respectively fixedly attached to different positions of the inner plate reinforcement plate 111, wherein one of the third flanges 5213 is arranged opposite to the first flange 5211, and the other third flange 5213 is arranged opposite to the second flange 5212.

[0059] The connecting support plate 521 is able to achieve a fit and fixation with the four walls of the shelf board connecting chamber 52 based on its four flange structures, wherein the first flange 5211 is fit and welded to the top wall of the chamber, i.e. the shelf board connecting top plate 31, the second flange 5212 is fit and welded to the front wall of the chamber, i.e. the shelf board front connecting plate 32, and the two third flanges 5213 are fit and welded to the bottom wall and the rear wall of the shelf board connecting chamber 52, respectively. It should be noted that in this embodiment, the inner plate reinforcement plate 111 has a reinforced bending area, and the two bent wall surfaces of the bending area are respectively formed as the bottom wall and the rear wall of the shelf board connecting chamber 52.

[0060] It should be understood that the first flange 5211 and the third flange 5213 arranged opposite thereto can be folded in the same direction or in opposite directions, and the second flange 5212 and the third flange 5213 arranged opposite thereto can be folded in the same direction or in opposite directions. It is preferred to adopt a structural form of relative flange reverse folding, thereby, the connecting support plate 521 forms a Z-shaped cross-sectional structure based on the first flange 5211 and the relative third flange 5213, and the connecting support plate 521 also forms a Z-shaped cross-sectional structure based on the second flange 5212 and the relative third flange 5213, so that the connecting support plate 521 can have a reinforcing effect on the shelf plate connecting chamber 52 in the X direction, the Y direction, and the Z direction, thereby improving the structural strength and rigidity of the shelf plate connecting chamber 52.

[0061] Combined with this Figure 5 and Fig.12 Understand the structure and connection method of the above-mentioned C-pillar assembly 20. The C-pillar assembly 20 includes a C-pillar inner panel 21. The lower boundary of the C-pillar inner panel 21, the upper boundary of the wheel house outer panel 12, and the shock absorber support 41 are overlapped and fixed together along the Y direction of the vehicle body; a C-pillar lower connecting plate 22 is provided on the C-pillar inner panel 21, and the upper and lower ends of the C-pillar lower connecting plate 22 are bent to form a groove-shaped structure recessed toward the outer side of the vehicle body along the Y direction, wherein a first bent surface 221 located at the upper end of the C-pillar lower connecting plate 22 is fit and fixed to the C-pillar inner panel 21, and a second bent surface 222 located at the lower end of the C-pillar lower connecting plate 22 is fit and fixed to the top plate 31 of the shelf plate connection.

[0062] It should be understood here that the C-pillar assembly 20 includes but is not limited to only the C-pillar inner panel 21, and there can be two connection situations. One is that when the boundary of the weight reduction and air avoidance area 110 is an open boundary, the lower boundary of the C-pillar inner panel 21, the upper boundary of the wheel arch outer panel 12, and the shock absorber support 41 are overlapped and fixed together along the Y direction of the vehicle body. The other is that when the boundary of the weight reduction and air avoidance area 110 is a closed boundary, at this time, the upper boundary of the wheel arch inner panel 11 replaces the shock absorber support 41 and the lower boundary of the C-pillar inner panel 21, that is, the upper boundary of the wheel arch outer panel 12, are connected as a whole.

[0063] Specifically, the upper boundary of the wheel arch outer panel 12 overlaps and is welded to the lower boundary of the C-pillar inner panel 21 in the Y direction, and the shock absorber support 41 is attached to and is welded to the wheel arch outer panel 12 in the Y direction, wherein the upper boundary of the shock absorber support 41 may overlap or not overlap with the lower boundary of the C-pillar inner panel 21 in the Z direction.

[0064] The C-pillar lower connecting plate 22 adopts a groove-shaped structure with bent ends. The first bent surface 221 can increase the fitting area with the C-pillar inner plate 21, and the second bent surface 222 can increase the fitting area with the shelf board connecting top plate 31, thereby reducing stress concentration at the connection position and improving the structural strength of the C-pillar lower connecting plate 22 itself, thereby improving the connection strength between the shelf board connecting top plate 31 and the C-pillar inner plate 21. The coordinated load-bearing of the C-pillar inner plate 21 and the C-pillar lower connecting plate 22 can promote the smoothness and dispersion of Z-direction force transmission, thereby reducing road noise. In addition, the outwardly concave groove-shaped structure can avoid the Y-direction space above the shelf board connecting plate, thereby improving the interior space of the vehicle body.

[0065] It should be noted that, in this embodiment, see Figure 1 , Figure 4 and Fig.13 The weight-reducing and air-avoiding area 110 extends from the middle of the top surface of the wheel house inner panel 11 to the upper edge of the wheel house inner panel 11 to form an open surrounding boundary 1101; the portion of the boundary of the shock absorber mounting assembly 40 located in the weight-reducing and air-avoiding area 110 is matched and connected with the open surrounding boundary 1101, and the remaining boundary of the shock absorber mounting assembly 40 exposed outside the open surrounding boundary 1101 is matched and connected with the wheel house outer panel 12.

[0066] Based on the open surrounding boundary 1101, a semicircular or U-shaped notch is actually formed on the top of the wheel arch inner panel 11. The notch, i.e., the weight-reducing and air-avoiding area 110, is a material-free area. Compared with the conventional wheel arch inner panel 11, it not only saves material costs, but also can significantly reduce the weight of the wheel arch inner panel 11, thereby contributing to the achievement of the lightweight index of the entire vehicle. In addition, the advantage of this structure is that it can utilize the open and environmentally friendly boundary to form an embracing connection and fix the shock absorber mounting assembly 40, while the portion of the shock absorber mounting assembly 40 exposed outside the open surrounding boundary 1101 can also form a matching connection with the wheel arch outer panel 12, thereby improving the integrated connection strength and stiffness between the shock absorber mounting assembly 40 and the rear wheel arch assembly 10, thereby improving the NVH performance of the entire vehicle.

[0067] For further information, see Figure 8 In this embodiment, an outer plate reinforcement plate 121 is provided on the boundary where the wheel house outer plate 12 is aligned with the open surrounding boundary 1101, and the boundary portion of the shock absorber mounting assembly 40 exposed outside the open surrounding boundary 1101 is matched and connected with the outer plate reinforcement plate 121. The outer plate reinforcement plate 121 can improve the strength of the connection structure between the wheel house outer plate 12 and the shock absorber mounting assembly 40, thereby improving the overall structural strength and stiffness performance.

[0068] Based on the same inventive concept, combined Figures 1 to 13 It is understood that an embodiment of the present application also provides a vehicle, including the above-mentioned vehicle body rear shock absorber mounting structure.

[0069] It should be noted that the vehicle in this embodiment can be a three-box sedan or an SUV.

[0070] Compared with the prior art, the vehicle provided by the present embodiment adopts the above-mentioned vehicle body rear shock absorber mounting structure, and the shock absorber mounting assembly 40 is connected to the storage plate connecting assembly 30 on the basis of being connected to the rear wheel cover assembly 10, and the storage plate connecting assembly 30 is also connected to the C-pillar assembly 20 and the rear wheel cover assembly 10, and the storage plate connecting assembly 30 can be used for collaborative load bearing, thereby improving the connection structure strength and rigidity of the shock absorber mounting assembly 40, thereby reducing the vibration energy transmission sensitivity of the excitation source area, thereby reducing the road noise in the vehicle, and improving the vehicle NVH performance and driving comfort; in addition, by providing a weight-reducing and air-avoiding area 110 on the wheel cover inner panel 11, and then matching and connecting the shock absorber mounting assembly 40 with the wheel cover inner panel 11 along the boundary of the weight-reducing and air-avoiding area 110 to achieve structural integration, on the basis of ensuring the surface integrity of the wheel cover inner panel 11, the material redundancy of the wheel cover inner panel 11 can be reduced, and the weight of the wheel cover inner panel 11 can be reduced, thereby promoting the vehicle to achieve lightweight indicators, especially for high-performance and low-weight models, which can significantly improve their market competitiveness.

[0071] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. The vehicle body rear shock absorber mounting structure is characterized by: The invention comprises a rear wheel cover assembly (10), a C-pillar assembly (20), a storage plate connecting assembly (30), and a shock absorber mounting assembly (40); the storage plate connecting assembly (30) and the rear wheel cover assembly (10) are both fixedly connected to the C-pillar assembly (20) along the Y direction of the vehicle body, the storage plate connecting assembly (30) and the shock absorber mounting assembly (40) are both fixedly connected to the rear wheel cover assembly (10), and the shock absorber mounting assembly (40) is fixedly connected to the storage plate connecting assembly (30); wherein the rear wheel cover assembly (10) comprises a wheel cover inner plate (11) and a wheel cover outer plate (12) which are matched and connected as one body, a weight reduction and air avoidance area (110) is provided on the wheel cover inner plate (11), and the shock absorber mounting assembly (40) is matched and connected to the boundary of the weight reduction and air avoidance area (110).

2. The vehicle body rear shock absorber mounting structure according to claim 1, characterized in that: The storage plate connecting assembly (30), the wheel house inner plate (11) and the shock absorber mounting assembly (40) together form a closed load-bearing cavity (50), and the shock absorber mounting assembly (40) divides the load-bearing cavity (50) into at least two linked load-bearing chambers along the Y direction of the vehicle body, one of which is a shock absorber mounting chamber (51) suitable for accommodating a shock absorber connector (60).

3. The vehicle body rear shock absorber mounting structure according to claim 2, characterized in that: The shelf connecting assembly (30) comprises a shelf connecting top plate (31), a shelf front connecting plate (32) and a shelf lower connecting plate (33) spaced apart along the X direction of the vehicle body; the shock absorber mounting assembly (40) comprises a shock absorber support (41) located below the shelf connecting top plate (31), a support upper reinforcing plate (42) fixedly connected above the shock absorber support (41), and a support lower reinforcing plate (43) fitted and fixed to the wheel house inner plate (11) and located below the shock absorber support (41); The shock absorber support (41) is matched and connected with the boundary of the weight-reducing and air-avoiding area (110); the front connecting plate (32) of the shelf plate, the connecting top plate (31) of the shelf plate, the lower connecting plate (33) of the shelf plate, the shock absorber support (41) and the inner plate (11) of the wheel arch are matched and connected in sequence to form the load-bearing cavity (50); the upper reinforcing plate (42) of the support and the connecting top plate (31) of the shelf plate are fixedly connected along the Z direction of the vehicle body, and the upper reinforcing plate (42) of the support, the shock absorber support (41) and the connecting top plate (31) of the shelf plate together form the shock absorber installation chamber (51).

4. The vehicle body rear shock absorber mounting structure according to claim 3, characterized in that: The support upper reinforcement plate (42) is a semi-enclosed box-shaped structure, comprising a first mounting mating surface (421) fixedly fitted with the shock absorber support (41), a second mounting mating surface (422) fixedly fitted with the top plate (31) connected to the shelf plate along the Z direction, and a Z-direction supporting surface (423) transitionally connected between the first mounting mating surface (421) and the second mounting mating surface (422); The first mounting mating surface (421) is provided with the shock absorber connecting member (60), and both ends of the first mounting mating surface (421) are provided with first folded edges (4211) bent upward, and both ends of the Z-direction supporting surface (423) are respectively provided with second folded edges (4231) overlapped and fixed with one of the first folded edges (4211).

5. The vehicle body rear shock absorber mounting structure as claimed in claim 3, characterized in that: An inner plate reinforcement plate (111) is provided on the wheel housing inner plate (11), and the inner plate reinforcement plate (111) is located between the shelf board front connection plate (32) and the shelf board lower connection plate (33), and the upper boundary is connected to the shelf board connection top plate (31); The shelf board connecting top plate (31), the shelf board front connecting plate (32), the shelf board lower connecting plate (33), the support reinforcement plate, the wheel house inner plate (11) and the inner plate reinforcement plate (111) together form a shelf board connecting chamber (52), and the shelf board connecting chamber (52) has a port in the upward direction of the vehicle body Y, and a connecting support plate (521) is sealed in the port.

6. The vehicle body rear shock absorber mounting structure according to claim 5, characterized in that: An X-direction support frame (522) is provided in the shelf board connection chamber (52), one end of the X-direction support frame (522) is fixedly connected to the inner plate reinforcement plate (111), and the other end is fixedly connected to the shelf board front connection plate (32), and the X-direction support frame (522) divides at least part of the space in the shelf board connection chamber (52) into two upper and lower superimposed load-bearing cavities.

7. The vehicle body rear shock absorber mounting structure according to claim 5, characterized in that: The connecting support plate (521) comprises a first flange (5211) fitted and fixed to the shelf board connecting top plate (31), a second flange (5212) fitted and fixed to the shelf board front connecting plate (32), and two third flanges (5213) respectively fitted and fixed to different positions of the inner plate reinforcing plate (111), wherein one of the third flanges (5213) is arranged opposite to the first flange (5211), and the other third flange (5213) is arranged opposite to the second flange (5212).

8. The vehicle body rear shock absorber mounting structure as claimed in claim 3, characterized in that: The C-pillar assembly (20) comprises a C-pillar inner plate (21), the lower boundary of the C-pillar inner plate (21), the upper boundary of the wheel house outer plate (12), and the shock absorber support (41) are overlapped and fixed together along the Y direction of the vehicle body; a C-pillar lower connecting plate (22) is provided on the C-pillar inner plate (21), and the upper and lower ends of the C-pillar lower connecting plate (22) are bent to form a groove-shaped structure that is recessed toward the outer side of the vehicle body along the Y direction, wherein a first bending surface (221) located at the upper end of the C-pillar lower connecting plate (22) is fitted and fixed to the C-pillar inner plate (21), and a second bending surface (222) located at the lower end of the C-pillar lower connecting plate (22) is fitted and fixed to the top plate (31) of the shelf plate connection.

9. The vehicle body rear shock absorber mounting structure according to any one of claims 1 to 8, characterized in that: The weight-reducing and air-avoiding area (110) extends from the middle of the top surface of the wheel house inner panel (11) to the upper edge of the wheel house inner panel (11) to form an open surrounding boundary (1101); the partial boundary of the shock absorber mounting assembly (40) located in the weight-reducing and air-avoiding area (110) is matched and connected with the open surrounding boundary (1101), and the remaining boundary of the shock absorber mounting assembly (40) exposed outside the open surrounding boundary (1101) is matched and connected with the wheel house outer panel (12).

10. A vehicle, characterized in that It comprises a vehicle body rear shock absorber mounting structure as described in any one of claims 1 to 9.

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