Vehicle body rear structure, vehicle body assembly and vehicle

Abstract

The vehicle body rear structure comprises a door ring reinforcing plate, the door ring reinforcing plate comprises a top beam, a C column, a wheel cover beam and a bottom beam, the top beam extends in the front-back direction of the vehicle, the C column extends in the up-down direction of the vehicle, the upper end of the C column is connected with the rear end of the top beam, and the bottom beam extends in the front-back direction of the vehicle. In the direction from front to back, the wheel cover beam inclines upwards, the upper end of the wheel cover beam is connected with the lower end of the column C, the lower end of the wheel cover beam is connected with the rear end of the bottom beam, the column D is located behind the column C and connected with the column C, and the front surface of the column D is attached to and connected with the rear surface of the column C on the same side. According to the vehicle body rear structure and the door ring reinforcing plate, a coherent force transmission path is formed, the force transmission path is optimized, therefore, impact force borne by the vehicle body rear structure can be effectively absorbed and dispersed, and through the multi-channel force transmission path, the problem that due to the fact that impact loads are excessively concentrated, local structure damage or connection failure is caused is effectively solved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular to a vehicle body rear structure, a vehicle body assembly and a vehicle. Background Art

[0002] The strength of the rear body structure is crucial for the rear suspension spring, rear shock absorber and rear subframe. However, in the prior art, the force transmission path formed between the components of the rear body is unreasonable, which easily leads to excessive local force, resulting in structural damage or connection failure, affecting the overall reliability of the vehicle. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a vehicle body rear structure, wherein the door ring reinforcement plate of the vehicle body rear structure forms a coherent force transmission path, effectively absorbs and disperses the impact force received by the vehicle body assembly, and realizes a multi-channel force transmission path, effectively avoiding the problem of local structural damage or connection failure caused by excessive concentration of impact load.

[0004] The present invention also provides a vehicle body assembly, wherein the vehicle comprises the above-mentioned rear vehicle body structure.

[0005] The present invention also provides a vehicle, comprising the above-mentioned body assembly.

[0006] A vehicle body rear structure according to an embodiment of the present invention is used for a vehicle and includes: a door knocker reinforcement plate, the door knocker reinforcement plate includes a top beam, a C-pillar, a wheel arch beam and a bottom beam, the top beam extends in the front-to-back direction of the vehicle, the C-pillar extends in the up-down direction of the vehicle and the upper end is connected to the rear end of the top beam, the bottom beam extends in the front-to-back direction of the vehicle, and in the direction from front to back, the wheel arch beam is inclined upward, the upper end of the wheel arch beam is connected to the lower end of the C-pillar, and the lower end of the wheel arch beam is connected to the rear end of the bottom beam; a D-pillar, the D-pillar is located behind the C-pillar and connected to the C-pillar, and the front surface of the D-pillar portion is in contact with and connected to the rear surface of the C-pillar on the same side.

[0007] According to the rear structure of the vehicle body of the embodiment of the present invention, the door ring reinforcement plate includes a top beam, a C-pillar, a wheel cover beam and a bottom beam, the top beam extends along the front-to-back direction of the vehicle, extends along the up-down direction of the vehicle through the C-pillar and the upper end is connected to the rear end of the top beam, the bottom beam extends along the front-to-back direction of the vehicle, in the direction from front to back, the wheel cover beam is inclined upward, the upper end of the wheel cover beam is connected to the lower end of the C-pillar, and the lower end of the wheel cover beam is connected to the rear end of the bottom beam, so that the upper and lower vehicle bodies are connected and connected, so that the door ring reinforcement plate forms a continuous force transmission path, optimizes the force transmission path, and can effectively absorb and disperse the impact force received by the rear structure of the vehicle body, reduce the concentration of the impact force resulting in excessive local force and partial structural damage, and improve the bending and torsional rigidity and durability reliability of the rear structure of the vehicle body. At the same time, the D-pillar is located behind the C-pillar and connected to the C-pillar, and the front surface of the D-pillar part is attached and connected to the rear surface of the C-pillar on the same side, so that the impact force received by the C-pillar or the D-pillar can be transmitted between the two, and the impact force received by the rear structure of the vehicle body can be further absorbed and dispersed. In addition, by implementing multi-channel force transmission paths, the problem of local structural damage or connection failure caused by excessively concentrated impact loads can be effectively avoided, further improving reliability.

[0008] In some embodiments of the present invention, the D-pillar includes a first section and a second section, the first section is located above the second section, the front surface of the first section is in contact with and connected to the rear surface of the C-pillar on the same side, and the second section is spaced apart from the C-pillar.

[0009] In some embodiments of the present invention, the first section includes a first inner panel and a first outer panel arranged and connected along the left-right direction of the vehicle, the C-pillar includes a C-pillar inner panel and a C-pillar outer panel arranged and connected along the left-right direction, the front surface of the first inner panel is bonded to and connected to the rear surface of the C-pillar inner panel on the same side, and the front surface of the first outer panel is bonded to and connected to the rear surface of the C-pillar outer panel on the same side.

[0010] In some embodiments of the present invention, in a direction from top to bottom, the D-pillar is inclined toward the rear.

[0011] In some embodiments of the present invention, the door knocker reinforcement plate is a one-piece piece.

[0012] The vehicle body assembly according to the embodiment of the present invention comprises the above-mentioned vehicle body rear structure, wherein the number of the vehicle body rear structures is two, and the two vehicle body rear structures are spaced apart in the left-right direction of the vehicle.

[0013] According to the vehicle body assembly of the embodiment of the present invention, a vehicle body rear structure is provided, and two vehicle body rear structures are spaced apart in the left-right direction of the vehicle so that the two vehicle body rear structures form a symmetrical force transmission structure, and a coherent force transmission path is formed through the door ring reinforcement plate, and the force transmission path is optimized, so that the impact force on the vehicle body rear structure can be effectively absorbed and dispersed, and the concentration of impact force can be reduced to reduce the damage to some structures caused by excessive local force, thereby improving the bending and torsional rigidity and durability reliability of the vehicle body assembly. At the same time, the impact force received by the C-pillar or D-pillar can be transmitted between the two to further absorb and disperse the impact force received by the vehicle body rear structure. In addition, the multi-channel force transmission path is realized to effectively avoid solving the problem of local structural damage or connection failure caused by excessive concentration of impact load, and further improve reliability.

[0014] In some embodiments of the present invention, it also includes: a first cross beam of the top cover, the first cross beam of the top cover extends along the left-right direction and is located between the two door knocker reinforcement plates, the upper ends of the two C-pillars are respectively connected to the two ends of the length direction of the first cross beam of the top cover, and the upper ends of the two D-pillars are respectively connected to the two ends of the length direction of the first cross beam of the top cover.

[0015] In some embodiments of the present invention, it also includes: a second cross beam of the top cover, the second cross beam of the top cover extends along the left-right direction and is located between the two door knocker reinforcement plates, the second cross beam of the top cover is located in front of the first cross beam of the top cover and is separated from the first cross beam of the top cover, and the two ends of the second cross beam of the top cover in the length direction are respectively connected to the two top beams.

[0016] In some embodiments of the present invention, it also includes: a wheel cover assembly, wherein there are two wheel cover assemblies and they are respectively located under the two C-pillars and respectively connected to the two C-pillars, the wheel cover assembly is located behind the bottom beam on the same side and is connected to the bottom beam on the same side, and the upper surface of the wheel cover assembly part and the lower surface of the wheel cover beam part on the same side are fitted and connected.

[0017] In some embodiments of the present invention, the present invention further includes: a longitudinal beam, wherein two longitudinal beams extend along the front-to-back direction, the two longitudinal beams are spaced apart along the left-right direction, and the two longitudinal beams are respectively connected to the two wheel cover assemblies; a sill beam, wherein two sill beams extend along the front-to-back direction, the two longitudinal beams are spaced apart along the left-right direction and are respectively located in front of the two longitudinal beams, the inner surface of the sill beam is connected to the front end of the longitudinal beam on the same side, and the outer surface of the sill beam is connected to the front end of the bottom beam on the same side.

[0018] In some embodiments of the present invention, the invention further includes: a rear enclosure assembly, which is located behind the D-pillar, and the two ends of the rear enclosure assembly along the left-right direction are respectively connected to the two D-pillars; a rear floor, which is located below the rear enclosure assembly, and the rear end of the rear floor is connected to the rear enclosure assembly, and along the left-right direction, the rear floor is located between the two longitudinal beams and is respectively connected to the two longitudinal beams.

[0019] In some embodiments of the present invention, the wheel arch assembly includes a wheel arch outer panel and a wheel arch plate, the wheel arch outer panel semi-surrounding the upper end of the wheel arch plate and being connected, the wheel arch outer panel being connected to the bottom beam and the C-pillar on the same side, the upper surface of the wheel arch outer panel portion and the lower surface of the wheel arch beam portion on the same side being fitted and connected, and the body assembly also includes: a side enclosure inner panel, the side enclosure inner panels being two and being located on the sides of the two door ring reinforcement plates facing each other, the two side enclosure inner panels being respectively connected to the two door ring reinforcement plates, the side enclosure inner panels being located above the wheel arch outer panel on the same side and being connected to the wheel arch outer panel on the same side; an upper cross beam for the rear seat, the upper cross beam for the rear seat extending along the left-right direction and being located between the two wheel arch assemblies, the two ends of the upper cross beam for the rear seat being respectively connected to the front ends of the two wheel arch outer panels in the length direction.

[0020] In some embodiments of the present invention, the wheel arch assembly also includes a wheel arch bracket and a wheel arch support plate, the wheel arch bracket is located on the inner side of the wheel arch plate and extends along the up and down direction, the outer surface of the upper end of the wheel arch bracket is connected to the wheel arch outer panel, and the inner surface of the lower end of the wheel arch bracket is connected to the upper end of the wheel arch support plate, and the body assembly also includes: an upper cross beam on the rear floor, the cross beam on the rear floor extends along the left and right direction of the vehicle and is located between the two wheel arch assemblies, and the two ends of the cross beam on the rear floor in the length direction are respectively connected to the lower ends of the two wheel arch support plates.

[0021] In some embodiments of the present invention, the wheel arch assembly further includes a wheel arch outer reinforcement plate, which is arranged opposite to the wheel arch bracket and located on the outer side of the wheel arch plate, and the upper end of the wheel arch outer reinforcement plate is connected to the C-pillar.

[0022] In some embodiments of the present invention, it also includes: a rear suspension spring mounting assembly, wherein the number of the rear suspension spring mounting assemblies is two and they are respectively located below the two longitudinal beams, the two rear suspension spring mounting assemblies are respectively connected to the two longitudinal beams, the suspension spring mounting assembly includes a rear suspension spring support plate and a rear suspension spring mounting bracket, one end of the rear suspension spring support plate is connected to the longitudinal beam, and the other end is connected to the rear suspension spring mounting bracket, and the rear suspension spring mounting bracket is used to install the rear suspension of the vehicle.

[0023] A vehicle according to an embodiment of the present invention includes the above-mentioned body assembly.

[0024] According to the vehicle of the embodiment of the present invention, a body assembly is provided, and two rear body structures are spaced apart in the left-right direction of the vehicle, so that the two rear body structures form a symmetrical force transmission structure, and a coherent force transmission path is formed through the door ring reinforcement plate, and the force transmission path is optimized, so that the impact force on the rear body structure can be effectively absorbed and dispersed, and the concentration of impact force can be reduced to reduce the damage to some structures caused by excessive local force, thereby improving the bending and torsional rigidity and durability reliability of the vehicle. At the same time, the impact force received by the C-pillar or D-pillar can be transmitted between the two, further absorbing and dispersing the impact force received by the rear body structure. In addition, the multi-channel force transmission path is realized to effectively avoid solving the problem of local structural damage or connection failure caused by excessive concentration of impact load, and further improve reliability.

[0025] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0027] Figure 1 is a structural diagram of a vehicle body assembly according to an embodiment of the present invention;

[0028] Figure 2 is a partial structural diagram of a vehicle body assembly according to an embodiment of the present invention;

[0029] Figure 3 is a side view of a door knocker reinforcement plate according to an embodiment of the present invention;

[0030] Figure 4 is a side view of a vehicle body assembly structure according to an embodiment of the present invention;

[0031] Figure 5 is a partial structural diagram of a vehicle body assembly according to an embodiment of the present invention;

[0032] Figure 6 is a structural diagram of a vehicle body assembly from another perspective according to an embodiment of the present invention;

[0033] Figure 7 is a partial structural diagram of a vehicle body assembly from another perspective according to an embodiment of the present invention;

[0034] Figure 8 is a top view of a vehicle body assembly according to an embodiment of the present invention.

[0035] Reference numerals:

[0036] 100. Body assembly;

[0037] 1. Door knocker reinforcement plate; 11. Top beam; 12. C-pillar; 13. Wheel housing beam; 14. Bottom beam;

[0038] 2. D-pillar; 21. first section; 22. second section;

[0039] 3. Wheel cover assembly; 31. Wheel cover outer plate; 32. Wheel cover plate; 33. Wheel cover bracket; 34. Wheel cover support plate; 35. Wheel cover outer reinforcement plate; 36. Wheel cover connecting plate;

[0040] 41. Longitudinal beam; 42. Door sill beam; 43. Rear floor; 44. Side inner panel; 45. Rear floor upper crossbeam; 46. Rear floor lower crossbeam;

[0041] 5. Rear enclosure assembly; 51. Rear enclosure connecting plate; 52. Rear enclosure cross beam;

[0042] 61. Rear seat upper crossbeam; 62. Rear seat lower crossbeam;

[0043] 7. Rear suspension spring mounting assembly; 71. Rear suspension spring support plate; 72. Rear suspension spring mounting bracket;

[0044] 81. The first cross beam of the top cover; 82. The second cross beam of the top cover;

[0045] 91. Rear floor reinforcement plate; 92. Spare tire support beam. DETAILED DESCRIPTION

[0046] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0047] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying 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 a limitation on the present invention. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0048] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] Hereinafter, a vehicle body rear structure according to an embodiment of the present invention will be described with reference to the accompanying drawings.

[0050] like Figure 1-Figure 7 As shown, a vehicle body rear structure according to an embodiment of the present invention is used for a vehicle, and the vehicle body rear structure includes a door ring reinforcement plate 1 and a D-pillar 2 .

[0051] Among them, the door knocker reinforcement plate 1 includes a top beam 11, a C-pillar 12, a wheel arch beam 13 and a bottom beam 14. The top beam 11 extends along the front-to-back direction of the vehicle, the C-pillar 12 extends along the up-down direction of the vehicle and the upper end is connected to the rear end of the top beam 11, and the bottom beam 14 extends along the front-to-back direction of the vehicle. In the direction from front to rear, the wheel arch beam 13 is inclined upward, the upper end of the wheel arch beam 13 is connected to the lower end of the C-pillar 12, and the lower end of the wheel arch beam 13 is connected to the rear end of the bottom beam 14.

[0052] It can be understood that the top beam 11 of the door knocker reinforcement plate 1 is suitable for connecting to the top structure of the rear structure of the vehicle body (such as the first cross beam 81 of the roof or the second cross beam 82 of the roof, etc.), the bottom beam 14 of the door knocker reinforcement plate 1 is suitable for connecting to the bottom structure of the rear structure of the vehicle body (such as the rear floor 43, the upper cross beam 61 of the rear seat or the upper cross beam 45 of the rear floor, etc.), and the wheel cover beam 13 of the door knocker reinforcement plate 1 is suitable for connecting to the wheel cover assembly 3 of the rear structure of the vehicle body, and the upper end of the C-pillar 12 of the door knocker reinforcement plate 1 is connected to the top beam 11, the lower end of the C-pillar 12 is connected to the wheel cover beam 13, and the lower end of the wheel cover beam 13 is connected to the rear end of the bottom beam 14, so that the upper and lower vehicle bodies are connected, so that the door knocker reinforcement plate 1 forms a continuous force transmission path, optimizes the force transmission path, and can effectively absorb and disperse the impact force on the rear structure of the vehicle body, reduce the concentration of impact force resulting in excessive local force and damage to some structures, and improve the bending and torsional stiffness and durability reliability of the rear structure of the vehicle body.

[0053] For example, when the top of the rear structure of the vehicle body is subjected to an impact force, the impact force is transmitted along the top beam 11 to the C-pillar 12, the wheel arch beam 13 and the bottom beam 14 in sequence to itself and the structure connected to itself, thereby effectively absorbing and dispersing the impact force from the top; or, when the side of the rear structure of the vehicle body is subjected to an impact force, the impact force is transmitted along the C-pillar 12 and the wheel arch beam 13 to the top beam 11 and the bottom beam 14 themselves and the structure connected to themselves, thereby effectively absorbing and dispersing the impact force from the side; or, when the bottom of the rear structure of the vehicle body is subjected to an impact force, the impact force is transmitted along the bottom beam 14 to the wheel arch beam 13, the C-pillar 12 and the top beam 11 in sequence to itself and the structure connected to itself, thereby effectively absorbing and dispersing the impact force from the bottom.

[0054] The D-pillar 2 is located behind the C-pillar 12 and connected to the C-pillar 12, and the front surface of the D-pillar 2 is in contact with and connected to the rear surface of the C-pillar 12 on the same side. Thus, a force transmission path between the C-pillar 12 and the D-pillar 2 is realized by such an arrangement, so that the impact force received by the C-pillar 12 or the D-pillar 2 can be transmitted between the two, further absorbing and dispersing the impact force received by the rear structure of the vehicle body, reducing the structural damage caused by excessive local force due to the concentration of the impact force, and improving the overall resistance of the rear structure of the vehicle body.

[0055] At the same time, by fitting and connecting the front surface of the D-pillar 2 with the rear surface of the C-pillar 12 on the same side, the connection and contact area between the C-pillar 12 and the D-pillar 2 in the up and down directions is effectively increased, and the force transmission path between the C-pillar 12 and the D-pillar 2 is further guaranteed, thereby effectively suppressing the torsional deformation resistance of the rear structure of the vehicle using the rear structure of the vehicle body, effectively reducing the deformation of the tailgate and the sunroof frame, greatly improving the bending and torsional stiffness and bending and torsional mode of the vehicle body, improving the rear seat ride comfort, and improving the reliability of the vehicle using the rear structure of the vehicle body.

[0056] In addition, the rear structure of the vehicle body uses a multi-channel force transmission path to effectively avoid the problem of local structural damage or connection failure caused by excessively concentrated impact loads, further improving reliability.

[0057] It should be noted that the left and right directions of the present application are the left and right sides on both sides in the vehicle width direction, the front and rear directions are the front and rear sides on both sides in the vehicle length direction, and the front side is the side close to the front of the vehicle, and the rear side is the side close to the rear of the vehicle, and the up and down directions are the upper and lower sides on both sides in the vehicle height direction. The upper side is the side close to the roof, and the lower side is the side close to the roof. At the same time, the inside and outside are based on the inside and outside directions when the door ring reinforcement plate 1 is arranged on the vehicle. For example, the front direction of the vehicle is the front, and the rear direction is the rear. When the door ring reinforcement plate 1 is arranged on the vehicle, the side where the two door ring reinforcement plates 1 are close to each other is the inside, and the side where the two door ring reinforcement plates 1 are away from each other is the outside.

[0058] According to the rear vehicle body structure of the embodiment of the present invention, the door knocker reinforcement plate 1 includes a top beam 11, a C-pillar 12, a wheel arch beam 13 and a bottom beam 14. The top beam 11 extends in the front-to-rear direction of the vehicle, extends in the up-and-down direction of the vehicle through the C-pillar 12 and the upper end is connected to the rear end of the top beam 11. The bottom beam 14 extends in the front-to-rear direction of the vehicle. In the direction from front to rear, the wheel arch beam 13 is inclined upward, the upper end of the wheel arch beam 13 is connected to the lower end of the C-pillar 12, and the lower end of the wheel arch beam 13 is connected to the rear end of the bottom beam 14, so that the upper and lower vehicle bodies are connected, so that the door knocker reinforcement plate 1 forms a continuous force transmission path, optimizes the force transmission path, and can effectively absorb and disperse the impact force on the rear structure of the vehicle body, reduce the concentration of impact force resulting in excessive local force and damage to some structures, and improve the bending and torsional rigidity and durability reliability of the rear structure of the vehicle body. At the same time, since the D-pillar 2 is located behind the C-pillar 12 and connected to the C-pillar 12, the front surface of the D-pillar 2 part is attached to and connected to the rear surface of the C-pillar 12 on the same side, so that the impact force received by the C-pillar 12 or the D-pillar 2 can be transmitted between the two, further absorbing and dispersing the impact force received by the rear structure of the vehicle body. In addition, the multi-channel force transmission path is realized to effectively avoid the problem of local structural damage or connection failure caused by excessive concentration of impact load, further improving reliability.

[0059] In some embodiments of the present invention, the door knocker reinforcement plate 1 is an integral part. Thus, the force transmission coherence and continuity of the force transmission path formed by the door knocker reinforcement plate 1 are further ensured by such a configuration. At the same time, the number of weld overlaps can be effectively reduced, the weld cracking problem can be avoided, the durability and reliability of the rear structure of the vehicle body can be further improved, and the reliability of the vehicle using the rear structure of the vehicle body can be improved.

[0060] In some embodiments of the present invention, Figure 1-Figure 4 As shown, the D-pillar 2 includes a first section 21 and a second section 22, the first section 21 is located above the second section 22, the front surface of the first section 21 is attached to and connected to the rear surface of the C-pillar 12 on the same side, and the second section 22 is spaced apart from the C-pillar 12; that is, the first section 21 is connected to the C-pillar 12 in the front-to-back direction, and the first section 21 and the C-pillar 12 are also directly connected to each other in the up-down direction. Thus, through such an arrangement, a force transmission path between the C-pillar 12 and the first section 21 is realized, for example, the impact force received by the C-pillar 12 can be transmitted to the first section 21 and then transmitted to the second section 22 via the first section 21, thereby achieving the dispersion of the impact force received by the C-pillar 12, and avoiding the situation where the local stress concentration of the C-pillar 12 causes cracking and other structural damage to a limited extent, thereby improving the reliability of the rear structure of the vehicle body.

[0061] At the same time, since the D-pillar 2 needs to be connected to the rear enclosure assembly 5 of the rear structure of the vehicle body, and the front surface of the first section 21 is fitted and connected to the rear surface of the C-pillar 12 on the same side, it is separated from the C-pillar 12 by the second section 22, ensuring that the lower end of the second section 22 can be connected to the rear enclosure assembly 5, thereby improving the practicality and reliability of the rear structure of the vehicle body.

[0062] In some embodiments of the present invention, the first section 21 includes a first inner panel and a first outer panel arranged and connected along the left-right direction of the vehicle, the C-pillar 12 includes a C-pillar 12 inner panel and a C-pillar 12 outer panel arranged and connected along the left-right direction, the front surface of the first inner panel is bonded to and connected to the rear surface of the C-pillar 12 inner panel on the same side, and the front surface of the first outer panel is bonded to and connected to the rear surface of the C-pillar 12 outer panel on the same side.

[0063] It can be understood that the upper end of the inner plate of the C-pillar 12 and the upper end of the outer plate of the C-pillar 12 are connected to the side beam, and the lower end of the inner plate of the C-pillar 12 and the lower end of the outer plate of the C-pillar 12 are connected to the wheel arch beam 13. The structural strength of the C-pillar 12 is effectively improved by the inner plate of the C-pillar 12 and the outer plate of the C-pillar 12, and the structural strength of the first section 21 is effectively improved by the first inner plate and the first outer plate. At the same time, the front surface of the first inner plate is fitted and connected to the rear surface of the inner plate of the C-pillar 12 on the same side, and the front surface of the first outer plate is fitted and connected to the rear surface of the outer plate of the C-pillar 12 on the same side, which further ensures the force transmission path between the C-pillar 12 and the first section 21, thereby improving the overall reliability.

[0064] In some embodiments of the present invention, Figure 1-Figure 4 As shown, in the direction from top to bottom, the D-pillar 2 is tilted toward the rear. Thus, through such an arrangement, the front surface of the upper part of the D-pillar 2 is fitted and connected to the rear surface of the C-pillar 12 on the same side. Since the D-pillar 2 needs to be connected to the rear enclosure component 5 of the rear structure of the vehicle body, through such an arrangement, the lower end of the D-pillar 2 can be connected to the rear enclosure component 5, thereby improving the practicality and reliability of the rear structure of the vehicle body. At the same time, in the direction from top to bottom, the arrangement of the D-pillar 2 tilting toward the rear helps to improve the aerodynamic performance of the vehicle, reduce wind resistance, and improve fuel economy.

[0065] The vehicle body assembly 100 according to an embodiment of the present invention will be described below.

[0066] The vehicle body assembly 100 according to the embodiment of the present invention includes a vehicle body rear structure, and the vehicle body rear structure is two, and the two vehicle body rear structures are spaced apart in the left-right direction of the vehicle. It can be understood that there are two door ring reinforcement plates 1 spaced apart in the left-right direction of the vehicle, there are two D-pillars 2 extending in the up-down direction, and the two D-pillars 2 are respectively located behind the two C-pillars 12 and are respectively connected to the two C-pillars 12.

[0067] According to the vehicle body assembly 100 of the embodiment of the present invention, a vehicle body rear structure is provided, and two vehicle body rear structures are spaced apart in the left-right direction of the vehicle so that the two vehicle body rear structures form a symmetrical force transmission structure, and a coherent force transmission path is formed through the door ring reinforcement plate 1, and the force transmission path is optimized, so that the impact force on the vehicle body rear structure can be effectively absorbed and dispersed, and the concentration of impact force can be reduced to reduce the damage to some structures caused by excessive local force, thereby improving the bending and torsional rigidity and durability reliability of the vehicle body assembly 100. At the same time, the impact force received by the C-pillar 12 or the D-pillar 2 can be transmitted between the two to further absorb and disperse the impact force received by the vehicle body rear structure. In addition, the multi-channel force transmission path is realized to effectively avoid solving the problem of local structural damage or connection failure caused by excessive concentration of impact load, and further improve reliability.

[0068] In some embodiments of the present invention, Figure 1-Figure 7 As shown, the vehicle body assembly 100 also includes a wheel cover assembly 3, which is in two pieces and is respectively located below two C-pillars 12 and connected to the two C-pillars 12, the wheel cover assembly 3 is located behind the bottom beam 14 on the same side and is connected to the bottom beam 14 on the same side, and the upper surface of the wheel cover assembly 3 and the lower surface of the wheel cover beam 13 on the same side are fitted and connected.

[0069] Therefore, through such an arrangement, a force transmission path between the wheel cover assembly 3 and the C-pillar 12 and a force transmission path between the wheel cover assembly 3 and the wheel cover beam 13 are realized, thereby realizing a force transmission path between the wheel cover assembly 3 and the door ring reinforcement plate 1, and further realizing the dispersion of the impact force received by the wheel cover assembly 3 or the door ring reinforcement plate 1, thereby improving the reliability of the vehicle body assembly 100.

[0070] In some embodiments of the present invention, Figure 1-Figure 7 As shown, the vehicle body assembly 100 further includes a longitudinal beam 41 and a sill beam 42. The longitudinal beam 41 extends in the front-to-back direction and is in two pieces, the two longitudinal beams 41 are spaced apart in the left-right direction, and the two longitudinal beams 41 are respectively connected to the two wheel housing assemblies 3; the sill beam 42 extends in the front-to-back direction and is spaced apart in the left-right direction and is respectively located in front of the two longitudinal beams 41; the inner surface of the sill beam 42 is connected to the front end of the longitudinal beam 41 on the same side, and the outer surface of the sill beam 42 is connected to the front end of the bottom beam 14 on the same side.

[0071] Thus, through such a setting, the force transmission path between the wheel cover assembly 3 and the longitudinal beam 41, the force transmission path between the sill beam 42 and the bottom beam 14, and the force transmission path between the sill beam 42 and the longitudinal beam 41 are realized, thereby realizing the force transmission path between the wheel cover assembly 3, the door ring reinforcement plate 1, the longitudinal beam 41 and the sill beam 42, and then achieving the dispersion of the impact force received by the wheel cover assembly 3, the door ring reinforcement plate 1, the longitudinal beam 41 and the sill beam 42, thereby improving the reliability of the body assembly 100. At the same time, for hybrid vehicles or pure electric vehicles using the body assembly 100, the collision load received by the body assembly 100 during the rear collision is effectively transmitted through such a setting, reducing the deformation of the rear part of the body, and protecting the battery pack from being squeezed.

[0072] For example, the impact force received by the door knocker reinforcement plate 1 can be transmitted along the wheel arch beam 13 to the wheel arch assembly 3 and the door sill beam 42, and then transmitted from the wheel arch assembly 3 to the longitudinal beam 41 and from the door sill beam 42 to the longitudinal beam 41, thereby dispersing the impact force received by the door knocker reinforcement plate 1 and improving the reliability of the vehicle body assembly 100; or, the impact force received by the longitudinal beam 41 can be transmitted along the door sill beam 42 and the wheel arch assembly 3 to the door knocker reinforcement plate 1, thereby dispersing the impact force received by the longitudinal beam 41 and improving the reliability of the vehicle body assembly 100.

[0073] In some embodiments of the present invention, Figure 1-Figure 7 As shown, the vehicle body assembly 100 further includes a rear enclosure component 5 and a rear floor 43. The rear enclosure component 5 is located behind the D-pillar 2, and the two ends of the rear enclosure component 5 along the left-right direction are respectively connected to the two D-pillars 2, and the rear floor 43 is located below the rear enclosure component 5, and the rear end of the rear floor 43 is connected to the rear enclosure component 5. Along the left-right direction, the rear floor 43 is located between the two longitudinal beams 41 and is respectively connected to the two longitudinal beams 41.

[0074] Thus, through such an arrangement, a force transmission path is realized between the D-pillar 2 and the rear enclosure assembly 5, the rear enclosure assembly 5 and the rear floor 43, and the rear floor 43 and the longitudinal beam 41, thereby realizing a force transmission path between the D-pillar 2, the rear enclosure assembly 5, the rear floor 43 and the longitudinal beam 41, and then achieving the dispersion of the impact force received by the D-pillar 2, the rear enclosure assembly 5, the rear floor 43 and the longitudinal beam 41, thereby improving the reliability of the body assembly 100. At the same time, for hybrid vehicles or pure electric vehicles using the body assembly 100, such an arrangement effectively transmits the collision load received by the body assembly 100 during the rear collision process, reduces the deformation of the rear part of the body, and protects the battery pack from being squeezed.

[0075] For example, the impact force received by the C-pillar 12 can be transmitted along the D-pillar 2 to the rear enclosure assembly 5, and then from the rear enclosure assembly 5 to the rear floor 43, and then from the rear floor 43 to the longitudinal beam 41, thereby dispersing the impact force received by the door ring reinforcement plate 1 and improving the reliability of the vehicle body assembly 100; or, the impact force received by the longitudinal beam 41 can be transmitted along the rear floor 43, the rear enclosure assembly 5, and the D-pillar 2 in sequence to the door ring reinforcement plate 1, thereby dispersing the impact force received by the longitudinal beam 41 and improving the reliability of the vehicle body assembly 100.

[0076] Furthermore, the rear enclosure assembly 5 includes a rear enclosure connecting plate 51 and a rear enclosure cross beam 52. The rear enclosure cross beam 52 extends in the left-right direction and the lower end is connected to the upper end of the rear floor 43. There are two rear enclosure connecting plates 51 extending in the up-down direction. The upper ends of the two rear enclosure connecting plates 51 are respectively connected to the lower ends of the two D-pillars 2, and the lower ends of the two rear enclosure connecting plates 51 are connected to the upper end of the rear enclosure cross beam 52. Therefore, the impact force received by the D-pillar 2 can be transmitted along the rear enclosure connecting plate 51 to the rear enclosure cross beam 52, and then from the rear enclosure cross beam 52 to the rear floor 43, further optimizing the force transmission path.

[0077] In some embodiments of the present invention, Figure 6-Figure 8 As shown, the vehicle body assembly 100 also includes a rear suspension spring mounting assembly 7. There are two rear suspension spring mounting assemblies 7, which are respectively located below the two longitudinal beams 41. The two rear suspension spring mounting assemblies 7 are respectively connected to the two longitudinal beams 41. The suspension spring mounting assembly includes a rear suspension spring support plate 71 and a rear suspension spring mounting bracket 72. One end of the rear suspension spring support plate 71 is connected to the longitudinal beam 41, and the other end is connected to the rear suspension spring mounting bracket 72. The rear suspension spring mounting bracket 72 is used to install the rear suspension of the vehicle. Therefore, the connection between the rear suspension and the two longitudinal beams 41 is achieved through such a setting, thereby realizing the installation of the rear suspension of the vehicle using the vehicle body assembly 100.

[0078] In some embodiments, Figure 1-Figure 8 As shown, the impact force received by the longitudinal beam 41 can be transmitted along the sill beam 42 and the wheel cover assembly 3 to the door ring reinforcement plate 1, and the impact force received by the longitudinal beam 41 can also be transmitted to the door ring reinforcement plate 1 along the rear floor 43, the rear enclosure assembly 5, and the D-pillar 2 in sequence, thereby realizing a continuous multi-channel force transmission structure of the body assembly 100 from bottom to top, which can effectively transmit the chassis load, so that the impact load of the rear suspension spring mounting assembly 7 is effectively transmitted to the body assembly 100, which is beneficial to improving the bending-torsional stiffness, bending-torsional mode and durability reliability of the whole vehicle, and through the multi-channel force transmission path, it is effectively avoided to solve the problem of local structural damage or connection failure caused by excessive concentration of impact loads, further improve reliability, and can greatly reduce the market complaint rate and vehicle maintenance costs.

[0079] Furthermore, the vehicle also includes a rear shock absorber and a rear subframe connected to the longitudinal beam 41. The impact force received by the longitudinal beam 41 can be transmitted along the body assembly 100 to achieve dispersion of the impact force, and the chassis load can be effectively transmitted, so that the impact load of the rear shock absorber and the rear subframe is effectively transmitted to the body assembly 100, which is beneficial to improving the bending and torsional stiffness, bending and torsional mode and durability reliability of the whole vehicle.

[0080] In some embodiments of the present invention, Figure 1-Figure 5 As shown, the wheel house assembly 3 includes a wheel house outer panel 31 and a wheel house plate 32, the wheel house outer panel 31 semi-surrounds the upper end of the wheel house plate 32 and is connected, the wheel house outer panel 31 is connected to the same side bottom beam 14 and the same side C-pillar 12, the upper surface of the wheel house outer panel 31 and the lower surface of the wheel house beam 13 on the same side are fitted and connected, the body assembly 100 also includes a side inner panel 44 and a rear seat upper cross beam 61, there are two side inner panels 44 and are located on the side of the two door ring reinforcement plates 1 facing each other, the two side inner panels 44 are respectively connected to the two door ring reinforcement plates 1, the side inner panels 44 are located above the same side wheel house outer panel 31 and are connected to the same side wheel house outer panel 31, the rear seat upper cross beam 61 extends in the left and right direction and is located between the two wheel house assemblies 3, and the two ends of the rear seat upper cross beam 61 in the length direction are respectively connected to the front ends of the two wheel house outer panels 31.

[0081] Therefore, through such an arrangement, a force transmission path is realized between the side inner panel 44 and the door ring reinforcement plate 1, the side inner panel 44 and the wheel house outer panel 31, and the wheel house outer panel 31 and the upper cross beam 61 of the rear seat, thereby realizing a force transmission path between the side inner panel 44, the door ring reinforcement plate 1, the wheel house outer panel 31 and the upper cross beam 61 of the rear seat, and then achieving the dispersion of the impact force received by the side inner panel 44, the door ring reinforcement plate 1, the wheel house outer panel 31 and the upper cross beam 61 of the rear seat, thereby improving the reliability of the body assembly 100.

[0082] For example, when the door ring reinforcement plate 1 is subjected to an impact force, the impact force is transmitted to the side panel inner panel 44, and then transmitted from the side panel inner panel 44 to the wheel house outer panel 31, and then transmitted from the wheel house outer panel 31 to the cross beam 61 on the rear seat, thereby dispersing the impact force on the door ring reinforcement plate 1 and improving the reliability of the vehicle body assembly 100.

[0083] Furthermore, the vehicle body assembly 100 further includes a rear seat lower cross beam 62, which is located below the rear seat upper cross beam 61 and is arranged opposite to the rear seat upper cross beam 61, and is connected to the rear seat upper cross beam 61. Thus, the rear seat lower cross beam 62 is buckled with the rear seat upper cross beam 61 in the up-down direction, thereby further improving the structural strength and dispersing the impact force transmitted to the rear seat upper cross beam 61.

[0084] In some embodiments of the present invention, Figure 1-Figure 5As shown, the wheel cover assembly 3 also includes a wheel cover bracket 33 and a wheel cover support plate 34. The wheel cover bracket 33 is located on the inner side of the wheel cover plate 32 and extends in the up and down directions. The outer surface of the upper end of the wheel cover bracket 33 is connected to the wheel cover outer plate 31, and the inner surface of the lower end of the wheel cover bracket 33 is connected to the upper end of the wheel cover support plate 34. The vehicle body assembly 100 also includes a rear floor cross beam 45. The rear floor cross beam 45 extends in the left and right directions of the vehicle and is located between the two wheel cover assemblies 3. The two ends of the rear floor cross beam 45 in the length direction are respectively connected to the lower ends of the two wheel cover support plates 34.

[0085] Thus, through such an arrangement, a force transmission path is realized between the wheel housing bracket 33 and the wheel housing outer panel 31, the wheel housing bracket 33 and the wheel housing support plate 34, and the wheel housing support plate 34 and the cross beam 45 on the rear floor, thereby realizing a force transmission path between the wheel housing outer panel 31, the wheel housing bracket 33, the wheel housing support plate 34 and the cross beam 45 on the rear floor, thereby realizing the dispersion of the impact force received by the wheel housing outer panel 31, the wheel housing bracket 33, the wheel housing support plate 34 and the cross beam 45 on the rear floor, thereby improving the reliability of the vehicle body assembly 100. For example, the impact force received by the wheel housing outer panel 31 is transmitted along the wheel housing bracket 33 and the wheel housing support plate 34 to the cross beam 45 on the rear floor.

[0086] At the same time, the upper crossbeam 45 on the rear floor is located behind the upper crossbeam 61 of the rear seats. Due to the force transmission paths between the side inner panel 44 and the door ring reinforcement plate 1, the side inner panel 44 and the wheel house outer panel 31, and the wheel house outer panel 31 and the upper crossbeam 61 of the rear seats, when the door ring reinforcement plate 1 is subjected to impact force, the impact force is transmitted to the side inner panel 44, and then from the side inner panel 44 to the wheel house outer panel 31, and then divided into two force transmission paths, from the wheel house outer panel 31 to the upper crossbeam 61 of the rear seats and from the wheel house outer panel 31, the wheel house bracket 33, and the wheel house support plate 34 to the rear floor crossbeam 45, effectively avoiding the problem of local structural damage or connection failure caused by excessive concentration of impact loads, and further improving reliability.

[0087] Furthermore, the wheel cover assembly 3 further includes a wheel cover connecting plate 36, which is located inside the wheel cover plate 32 and extends in the up-down direction, the outer surface of the upper end of the wheel cover bracket 33 is connected to the wheel cover outer plate 31, and the inner surface of the lower end of the wheel cover bracket 33 is connected to the rear floor 43. This arrangement also realizes the force transmission path between the wheel cover outer plate 31, the wheel cover connecting plate 36 and the rear floor 43, which is divided into three force transmission paths after being transmitted from the side inner plate 44 to the wheel cover outer plate 31, further avoiding the problem of local structural damage or connection failure caused by excessive concentration of impact load, and further improving reliability.

[0088] Furthermore, the vehicle body assembly 100 further includes a rear floor lower cross beam 46, which is located below the rear floor upper cross beam 45 and is disposed opposite to the rear floor upper cross beam 45, and is connected to the rear floor upper cross beam 45. Thus, the rear floor lower cross beam 46 and the rear floor upper cross beam 45 are buckled in the up-and-down direction, thereby further improving the structural strength and dispersing the impact force transmitted to the rear seat upper cross beam 61.

[0089] In some embodiments of the present invention, Figure 1-Figure 5 As shown, the wheel housing assembly 3 further includes a wheel housing outer reinforcement plate 35, which is arranged opposite to the wheel housing bracket 33 and is located outside the wheel housing plate 32, and the upper end of the wheel housing outer reinforcement plate 35 is connected to the C-pillar 12. Thus, through such an arrangement, a force transmission path between the wheel housing outer reinforcement plate 35 and the C-pillar 12 is realized, thereby achieving the dispersion of the impact force received by the wheel housing outer reinforcement plate 35 and the C-pillar 12, thereby improving the reliability of the vehicle body assembly 100.

[0090] Specifically, the lower end of the wheel housing outer reinforcement plate 35 is connected to the longitudinal beam 41. Thus, a force transmission path is realized between the wheel housing outer reinforcement plate 35 and the longitudinal beam 41, thereby realizing a force transmission path between the C-pillar 12, the wheel housing outer reinforcement plate 35 and the longitudinal beam 41, and then realizing the dispersion of the impact force received by the C-pillar 12, the wheel housing outer reinforcement plate 35 and the longitudinal beam 41, thereby improving the reliability of the vehicle body assembly 100. For example, when the door ring reinforcement plate 1 is subjected to an impact force, the impact force is transmitted along the C-pillar 12 to the wheel housing outer reinforcement plate 35, and then transmitted from the wheel housing outer reinforcement plate 35 to the longitudinal beam 41, thereby realizing the dispersion of the impact force received by the door ring reinforcement plate 1, thereby improving the reliability of the vehicle body assembly 100.

[0091] At the same time, the wheel arch bracket 33 is located on the inner side of the wheel arch plate 32, and the wheel arch outer reinforcement plate 35 is arranged opposite to the wheel arch bracket 33 and is located on the outer side of the wheel arch plate 32, so that the wheel arch outer reinforcement plate 35 and the wheel arch bracket 33 are reversed inside and outside to form an internal and external multi-channel force transmission path, further avoiding the problem of local structural damage or connection failure caused by excessive concentration of impact loads, and further improving reliability.

[0092] In addition, the wheel cover assembly 3 composed of the wheel cover outer plate 31, the wheel cover plate 32, the wheel cover bracket 33, the wheel cover support plate 34 and the wheel cover outer reinforcement plate 35 is buckled inside and outside, and the components are connected and connected, which effectively strengthens the structural strength of the wheel cover assembly 3 and the door ring reinforcement plate 1, the threshold beam 42, the longitudinal beam 41 and the rear floor 43 connected to the wheel cover assembly 3, so that the upper and lower car bodies are connected and connected, and at the same time, the entire force transmission path is diversified, so that the structure of the body assembly 100 is optimized, and the bending and torsional stiffness, bending and torsional modal performance, rear collision performance, NVH performance, rear row riding comfort performance and vehicle durability reliability of the whole vehicle are greatly improved. At the same time, through such an internal and external buckling structure, the body assembly 100 can effectively resist the side collision force and disperse and transmit the impact force. In addition, the NVH performance such as the stiffness of the rear suspension spring mounting assembly 7 and the vibration transmission path is improved, and the rear row riding comfort is improved.

[0093] In some embodiments of the present invention, Figure 1-Figure 6 As shown, the vehicle body assembly 100 further includes a first roof cross beam 81. The first roof cross beam 81 extends in the left-right direction and is located between the two door ring reinforcement plates 1, the upper ends of the two C pillars 12 are respectively connected to the two ends of the length direction of the first roof cross beam 81, and the upper ends of the two D pillars 2 are respectively connected to the two ends of the length direction of the first roof cross beam 81.

[0094] Thus, through such an arrangement, a force transmission path is realized between the C-pillar 12 and the first cross beam 81 of the roof, and between the D-pillar 2 and the first cross beam 81 of the roof, so that the impact force received by the C-pillar 12, the D-pillar 2 and the first cross beam 81 of the roof is dispersed, thereby improving the reliability of the vehicle body assembly 100. For example, the impact force received by the first cross beam 81 of the roof is transmitted to the C-pillar 12 and the D-pillar 2 respectively, thereby achieving the dispersion of the impact force received by the first cross beam 81 of the roof, and improving the reliability of the vehicle body assembly 100.

[0095] At the same time, through the force transmission path between the door ring reinforcement plate 1, the wheel arch outer panel 31 and the upper cross beam 61 of the rear seat, an annular force transmission path is realized between the first cross beam 81 of the top cover, the door ring reinforcement plate 1, the wheel arch outer panel 31 and the upper cross beam 61 of the rear seat. The annular structure makes the force transmission path a continuous closed-loop path, further optimizing the force transmission path of the body assembly 100, further improving the structural strength of the body assembly 100, and greatly improving the bending and torsional stiffness, durability reliability and NVH performance of the whole vehicle.

[0096] In some embodiments of the present invention, Figure 1-Figure 6As shown, the vehicle body assembly 100 further includes a second roof cross beam 82. The second roof cross beam 82 extends in the left-right direction and is located between the two door ring reinforcement plates 1. The second roof cross beam 82 is located in front of the first roof cross beam 81 and is spaced apart from the first roof cross beam 81. Both ends of the second roof cross beam 82 in the length direction are connected to the two roof beams 11 respectively.

[0097] Thus, through such an arrangement, a force transmission path between the side beam and the second cross beam 82 of the roof is realized, so that the impact force on the side beam and the second cross beam 82 of the roof is dispersed, thereby improving the reliability of the vehicle body assembly 100. At the same time, because the second cross beam 82 of the roof is located in front of the first cross beam 81 of the roof and is separated from the first cross beam 81 of the roof, when the upper end of the vehicle body assembly 100 is subjected to an impact force, it can be dispersed to the first cross beam 81 of the roof and the second cross beam 82 of the roof, and transmitted along the first cross beam 81 of the roof to the door ring reinforcement plate 1 and the D-pillar 2 and along the second cross beam 82 of the roof to the door ring reinforcement plate 1, thereby achieving the dispersion of the impact force on the upper end of the vehicle body assembly 100, thereby improving the reliability of the vehicle body assembly 100.

[0098] At the same time, through the force transmission path between the D-pillar 2, the rear enclosure component 5, the rear floor 43 and the longitudinal beam 41, an annular force transmission path is realized between the second cross beam 82 of the top cover, the pillar, the rear enclosure component 5, the rear floor 43 and the longitudinal beam 41. The annular structure makes the force transmission path a continuous closed-loop path, further optimizing the force transmission path of the body assembly 100, further improving the structural strength of the body assembly 100, and greatly improving the bending and torsional stiffness, durability reliability and NVH performance of the whole vehicle.

[0099] In some embodiments, Figure 8 As shown, the vehicle body assembly 100 further includes a rear floor reinforcement plate 91 and a spare tire support cross beam 92. The spare tire support cross beam 92 extends in the left-right direction, is located behind the rear floor lower cross beam 46 and is connected to the rear floor lower cross beam 46 through two longitudinal beams 41 respectively. The rear floor reinforcement plate 91 extends in the front-to-back direction and is located below the rear floor 43. The front end of the rear floor reinforcement plate 91 is connected to the spare tire support cross beam 92. Thus, a force transmission path is realized between the spare tire support cross beam 92 and the rear floor lower cross beam 46, the rear floor lower cross beam 46 and the rear floor reinforcement plate 91, and the rear floor reinforcement plate 91 and the rear floor 43, thereby realizing a force transmission path between the spare tire support cross beam 92, the rear floor lower cross beam 46, the rear floor reinforcement plate 91 and the rear floor 43, thereby dispersing the impact force on the spare tire support cross beam 92, the rear floor lower cross beam 46, the rear floor reinforcement plate 91 and the rear floor 43, and improving the reliability of the vehicle body assembly 100.

[0100] Next, a vehicle according to an embodiment of the present invention will be described.

[0101] A vehicle according to an embodiment of the present invention includes a body assembly 100 .

[0102] According to the vehicle of the embodiment of the present invention, a body assembly 100 is provided, and two rear body structures are spaced apart in the left-right direction of the vehicle, so that the two rear body structures form a symmetrical force transmission structure, and a coherent force transmission path is formed through the door ring reinforcement plate 1, and the force transmission path is optimized, so that the impact force on the rear body structure can be effectively absorbed and dispersed, and the concentration of impact force can be reduced to reduce the damage to some structures caused by excessive local force, thereby improving the bending and torsional rigidity and durability reliability of the vehicle. At the same time, the impact force received by the C-pillar 12 or the D-pillar 2 can be transmitted between the two, further absorbing and dispersing the impact force received by the rear body structure. In addition, the multi-channel force transmission path is realized to effectively avoid solving the problem of local structural damage or connection failure caused by excessive concentration of impact load, and further improve reliability.

[0103] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0104] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A vehicle body rear structure, used for a vehicle, characterized in that: include: A door knocker reinforcement plate, the door knocker reinforcement plate comprising a top beam, a C-pillar, a wheel cover beam and a bottom beam, the top beam extending in the front-to-back direction of the vehicle, the C-pillar extending in the up-down direction of the vehicle and having an upper end connected to a rear end of the top beam, the bottom beam extending in the front-to-back direction of the vehicle, the wheel cover beam tilting upward in the direction from front to back, the upper end of the wheel cover beam connected to a lower end of the C-pillar, and the lower end of the wheel cover beam connected to a rear end of the bottom beam; A D-pillar is located behind the C-pillar and connected to the C-pillar, and a front surface of the D-pillar portion is in contact with and connected to a rear surface of the C-pillar on the same side.

2. The vehicle body rear structure according to claim 1, characterized in that: The D-pillar includes a first section and a second section, the first section is located above the second section, a front surface of the first section is in contact with and connected to a rear surface of the C-pillar on the same side, and the second section is spaced apart from the C-pillar.

3. The vehicle body rear structure according to claim 2, characterized in that: The first section includes a first inner panel and a first outer panel arranged and connected along the left-right direction of the vehicle, and the C-pillar includes a C-pillar inner panel and a C-pillar outer panel arranged and connected along the left-right direction, a front surface of the first inner panel is bonded to and connected to a rear surface of the C-pillar inner panel on the same side, and a front surface of the first outer panel is bonded to and connected to a rear surface of the C-pillar outer panel on the same side.

4. The vehicle body rear structure according to claim 1, characterized in that: In a direction from top to bottom, the D-pillar is inclined toward the rear.

5. The vehicle body rear structure according to claim 1, characterized in that: The door ring reinforcement plate is an integral piece.

6. A vehicle body assembly, characterized in that: It comprises the vehicle body rear structure according to any one of claims 1 to 5, wherein the number of the vehicle body rear structures is two, and the two vehicle body rear structures are spaced apart in the left-right direction of the vehicle.

7. The vehicle body assembly according to claim 6, characterized in that: Also includes: The first cross beam of the top cover extends along the left-right direction and is located between the two door knocker reinforcement plates, the upper ends of the two C-pillars are respectively connected to the two ends of the first cross beam of the top cover in the length direction, and the upper ends of the two D-pillars are respectively connected to the two ends of the first cross beam of the top cover in the length direction.

8. The vehicle body assembly according to claim 7, characterized in that: Also includes: A second cross beam of the top cover extends along the left-right direction and is located between the two door knocker reinforcement plates. The second cross beam of the top cover is located in front of the first cross beam of the top cover and is spaced apart from the first cross beam of the top cover. Both ends of the second cross beam of the top cover in the length direction are respectively connected to the two top beams.

9. The vehicle body assembly according to claim 6, characterized in that: Also includes: Wheel cover assembly, there are two wheel cover assemblies and they are respectively located under the two C-pillars and connected to the two C-pillars, the wheel cover assembly is located behind the bottom beam on the same side and connected to the bottom beam on the same side, the upper surface of the wheel cover assembly part and the lower surface of the wheel cover beam part on the same side are fitted and connected.

10. The vehicle body assembly according to claim 9, characterized in that: Also includes: A longitudinal beam, the longitudinal beam extending along the front-rear direction and being two in number, the two longitudinal beams being spaced apart along the left-right direction, and the two longitudinal beams being connected to the two wheel house assemblies respectively; A threshold beam, wherein the threshold beams are two and extend along the front-rear direction, the two longitudinal beams are spaced apart along the left-right direction and are respectively located in front of the two longitudinal beams, the inner surface of the threshold beam is connected to the front end of the longitudinal beam on the same side, and the outer surface of the threshold beam is connected to the front end of the bottom beam on the same side.

11. The vehicle body assembly according to claim 10, characterized in that: Also includes: A rear enclosure component, the rear enclosure component is located behind the D-pillar, and the two ends of the rear enclosure component along the left-right direction are respectively connected to the two D-pillars; A rear floor, the rear floor is located below the rear enclosure assembly, a rear end of the rear floor is connected to the rear enclosure assembly, and along the left-right direction, the rear floor is located between the two longitudinal beams and is respectively connected to the two longitudinal beams.

12. The vehicle body assembly according to claim 11, characterized in that: The wheel cover assembly includes a wheel cover outer panel and a wheel cover plate, wherein the wheel cover outer panel half surrounds and is connected to the upper end of the wheel cover plate, the wheel cover outer panel is connected to the bottom beam and the C-pillar on the same side, and the upper surface of the wheel cover outer panel part and the lower surface of the wheel cover beam part on the same side are fitted and connected, and the vehicle body assembly also includes: Side enclosure inner panels, the side enclosure inner panels are two and are located on the sides of the two door ring reinforcement panels facing each other, the two side enclosure inner panels are respectively connected to the two door ring reinforcement panels, and the side enclosure inner panels are located above the wheel house outer panel on the same side and are connected to the wheel house outer panel on the same side; The rear seat upper cross beam extends along the left-right direction and is located between the two wheel cover assemblies, and the two ends of the rear seat upper cross beam in the length direction are respectively connected to the front ends of the two wheel cover outer panels.

13. The vehicle body assembly according to claim 12, characterized in that: The wheel cover assembly further includes a wheel cover bracket and a wheel cover support plate, wherein the wheel cover bracket is located inside the wheel cover plate and extends along the up-down direction, the outer surface of the upper end of the wheel cover bracket is connected to the wheel cover outer plate, and the inner surface of the lower end of the wheel cover bracket is connected to the upper end of the wheel cover support plate, and the vehicle body assembly further includes: A cross beam on the rear floor extends along the left-right direction of the vehicle and is located between the two wheel cover assemblies, and both ends of the cross beam on the rear floor in the length direction are respectively connected to the lower ends of the two wheel cover support plates.

14. The vehicle body assembly according to claim 13, characterized in that: The wheel cover assembly also includes a wheel cover outer reinforcement plate, which is arranged opposite to the wheel cover bracket and located on the outside of the wheel cover plate, and the upper end of the wheel cover outer reinforcement plate is connected to the C-pillar.

15. The vehicle body assembly according to claim 10, characterized in that: Also includes: A rear suspension spring mounting assembly, wherein there are two rear suspension spring mounting assemblies and the rear suspension spring mounting assemblies are respectively located below the two longitudinal beams, the two rear suspension spring mounting assemblies are respectively connected to the two longitudinal beams, the suspension spring mounting assembly comprises a rear suspension spring support plate and a rear suspension spring mounting bracket, one end of the rear suspension spring support plate is connected to the longitudinal beam, and the other end is connected to the rear suspension spring mounting bracket, and the rear suspension spring mounting bracket is used to install the rear suspension of the vehicle.

16. A vehicle, characterized in that: Comprising a vehicle body assembly according to any one of claims 6-15.

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