Vehicle body rear structure and vehicle

Abstract

The present application relates to the technical field of vehicle parts, and provides a rear body structure and a vehicle, the rear body structure comprising an upper body and a lower body, the upper body comprising a hat shelf, a hat shelf cross beam, a rear quarter and a first reinforcing part, the rear quarter being arranged on both sides of the upper body along the left-right direction, the lower body comprising a rear wheel cover and a C-ring cross beam, the rear wheel cover being arranged on both sides of the lower body along the left-right direction and being connected with the corresponding rear quarter, the C-ring cross beam extending upward at both ends along the left-right direction to the corresponding rear wheel cover, the hat shelf cross beam extending downward at both ends along the left-right direction to the corresponding rear wheel cover and being overlapped with both ends of the C-ring cross beam along the left-right direction, the first reinforcing part being arranged above the hat shelf and on the inner side of the rear quarter and corresponding to the rear quarter, both ends of the first reinforcing part along the up-down direction being connected with the hat shelf and the corresponding rear quarter, so that the rigidity of the upper body and the overlapping part of the upper and lower bodies can be improved, and the road noise problem can be improved.

Description

Technical Field

[0001] This invention relates to the field of vehicle component technology, and more specifically, to a rear structure of a vehicle body and a vehicle. Background Technology

[0002] With the continuous development of the new energy vehicle market, more and more consumers are paying attention to the driving and riding experience, which has prompted continuous innovation and upgrading of new energy vehicles. To satisfy the desire for a wide field of vision and enhanced passenger enjoyment, automakers often design traditional sheet metal roofs with transparent glass, creating an unobstructed screen visual experience. While the need for a wider field of vision reduces the design of roof sheet metal beams, it often reduces passenger comfort. NVH performance (noise, vibration, and harshness) is an indicator of comfort and is the most easily perceived performance characteristic by consumers. For electric vehicles, the lack of engine noise masking makes road noise the most easily perceived in-car noise factor for drivers and passengers, and thus a crucial indicator of NVH performance.

[0003] Currently, when a car is driving on the road, the tires receive excitations from different road surfaces. These road excitations are transmitted to the car body through the suspension, causing vibrations in the body panels, sunroof, and rear windshield. In the existing rear structure of a car body, the upper body has relatively weak rigidity, and the joint between the upper and lower body is also relatively weak, which makes the rear of the car body prone to noise problems due to vibration. Summary of the Invention

[0004] The problem addressed by this invention is: how to improve the rigidity of the rear structure of a vehicle body to reduce vibration and improve noise levels.

[0005] To solve the above problems, the present invention provides a rear vehicle structure, including an upper body and a lower body. The upper body includes a coat rack, a coat rack crossbeam, a rear side panel, and a first reinforcing member. The rear side panel is disposed on both sides of the upper body along the left-right direction of the vehicle. The lower body includes a rear wheel cover and a C-ring crossbeam. The rear wheel cover is disposed on both sides of the lower body along the left-right direction and is connected to the corresponding rear side panel.

[0006] The C-ring crossbeam extends upward from both ends in the left-right direction to the corresponding rear wheel arches, and the coat rack crossbeam extends downward from both ends in the left-right direction to the corresponding rear wheel arches, and overlaps with the C-ring crossbeam from both ends in the left-right direction.

[0007] The first reinforcing member is located on the inner side of the rear side panel and above the coat rack, and is correspondingly arranged with the rear side panel. The two ends of the first reinforcing member along the vertical direction of the vehicle are respectively connected to the coat rack and the corresponding rear side panel.

[0008] Optionally, the first reinforcing member includes a first reinforcing body, a first supporting part, and a second supporting part. The first supporting part and the second supporting part are respectively disposed at both ends of the first reinforcing body along the vertical direction, and the first supporting part is connected to the corresponding part of the rear side panel for connection with the rear windshield, and the second supporting part is connected to the coat rack.

[0009] Optionally, the first reinforcing member further includes a third support portion, which is disposed at both ends of the first reinforcing body along the front-rear direction of the vehicle and connected to the corresponding rear side panel, and the first support portion, the third support portion and the second support portion are arranged sequentially along the vertical direction.

[0010] Optionally, the rear side panel includes a side beam, an inner side panel, and an inner C-pillar panel. The inner C-pillar panel is connected to the lower end of the inner side panel, and the side beam is disposed opposite to the inner side panel and connected to the outer side of the inner side panel.

[0011] The upper body also includes a first side panel outer reinforcing plate disposed opposite to the end of the coat rack crossbeam in the left-right direction and / or a second side panel outer reinforcing plate disposed opposite to the side panel inner plate. The first side panel outer reinforcing plate overlaps the outer side of the side beam and the rear wheel arch, and together with the coat rack crossbeam, forms a first cavity. The second side panel outer reinforcing plate overlaps the outer side of the side beam and the rear wheel arch, and together with the side panel inner plate and the C-pillar inner plate, forms a second cavity.

[0012] Optionally, the upper body further includes a rear crossbeam of the windshield and a second reinforcing member. The two ends of the coat rack along the front-rear direction of the vehicle are respectively connected to the coat rack crossbeam and the rear crossbeam of the windshield. One end of the second reinforcing member along the front-rear direction is connected to the coat rack crossbeam, and the other end is connected to the overlap between the coat rack and the rear crossbeam of the windshield.

[0013] Optionally, the rear wheel cover includes an outer wheel cover and an inner wheel cover. The inner wheel cover is provided with a first shock absorber mounting seat and a second shock absorber mounting seat. The first shock absorber mounting seat and the second shock absorber mounting seat are formed by the inner wheel cover being recessed towards the side where the outer wheel cover is located.

[0014] Optionally, the first shock absorber mounting base includes a first mounting surface and a plurality of first side surfaces. The plurality of first side surfaces are connected sequentially from end to end along the circumference of the first mounting surface. One end of each of the plurality of first side surfaces is connected to the first mounting surface, and the other end is connected to the inner wheel cover. Adjacent two first side surfaces are set at an obtuse angle.

[0015] And / or, the second shock absorber mounting base includes a second mounting surface, a second side surface, and a plurality of third side surfaces. The second side surface and the plurality of third side surfaces are connected sequentially end to end along the circumference of the second mounting surface. One end of the second side surface and the plurality of third side surfaces are respectively connected to the second mounting surface, and the other end is respectively connected to the inner wheel cover. The second side surface extends along the vertical direction, and two adjacent third side surfaces are arranged at right angles. The second side surface is parallel to the calibration side surface. The calibration side surface is the third side surface that is opposite to the second side surface among the plurality of third side surfaces.

[0016] Optionally, the lower body further includes a seat crossbeam and a middle floor. The two ends of the middle floor along the left-right direction are respectively connected to the corresponding rear wheel arches. The two ends of the middle floor along the front-rear direction of the vehicle are respectively connected to the seat crossbeam and the C-ring crossbeam. The middle floor is provided with a boss structure, which is formed by the middle floor protruding upward. The seat crossbeam and the boss structure are provided with seat mounting seats for mounting seats.

[0017] Optionally, the lower body also includes a rear longitudinal beam corresponding to the rear wheel arch, the rear longitudinal beam being connected to the inner side of the corresponding rear wheel arch, the two ends of the C-ring crossbeam along the left and right direction being respectively connected to the corresponding rear longitudinal beam, the rear longitudinal beam being provided with a spring seat and a seventh reinforcing rib, the spring seat being located at the lower end of the rear longitudinal beam, and the seventh reinforcing rib being located directly above the spring seat.

[0018] To address the aforementioned problems, the present invention also provides a vehicle including the rear body structure described above.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The rear structure of the vehicle body of the present invention can be improved by extending the left and right ends of the coat rack beam of the upper body downward to the rear wheel arch, and extending the left and right ends of the C-ring beam of the lower body upward to the rear wheel arch, so that the left and right ends of the coat rack beam and the left and right ends of the C-ring beam respectively overlap on the rear wheel arch, thereby forming a complete and closed force transmission loop, thereby improving the torsional stiffness of the rear structure of the vehicle body and improving the durability and road noise performance of the rear structure of the vehicle body. In addition, the rigidity of the upper body can be improved by installing a first reinforcing member on the inner side of the rear side panel and above the coat rack. At the same time, the upper and lower ends of the first reinforcing member are connected to the coat rack and the corresponding rear side panel, respectively, so that the first reinforcing member is connected to the closed force transmission loop. This can improve the rigidity of the joint between the upper and lower body. Moreover, the first reinforcing member, together with the coat rack crossbeam and C-ring crossbeam that form the closed force transmission loop, form a key force transmission path that can transmit forces in the vertical and horizontal directions. This can effectively suppress the vibration of the upper body in the vertical and horizontal directions and further improve the road noise problem. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the rear structure of the vehicle body in an embodiment of the present invention;

[0022] Figure 2 This is a structural schematic diagram of the rear structure of the vehicle body from another perspective in an embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of the first reinforcing member in an embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the structure of the first reinforcing member assembled between the rear side panel and the coat rack in an embodiment of the present invention;

[0025] Figure 5 This is a schematic diagram of the upper body structure at the rear crossbeam of the windshield in an embodiment of the present invention;

[0026] Figure 6 This is a schematic diagram of the structure of the rear side panel facing outwards in an embodiment of the present invention;

[0027] Figure 7 This is a schematic diagram of the structure of the rear side panel facing the vehicle interior in an embodiment of the present invention;

[0028] Figure 8 This is a schematic diagram of the structure of the first cavity formed by the first side reinforcement plate and the coat rack beam in an embodiment of the present invention;

[0029] Figure 9 This is a schematic diagram of the structure when the third reinforcing member is connected to the inner side panel and the inner C-pillar panel in an embodiment of the present invention;

[0030] Figure 10This is a schematic diagram of the structure of the coat rack, coat rack crossbeam, windshield rear crossbeam, and second reinforcing member during assembly in an embodiment of the present invention;

[0031] Figure 11 This is a schematic diagram of the lower vehicle body at the rear wheel arch in an embodiment of the present invention;

[0032] Figure 12 This is a structural schematic diagram of the lower vehicle body at the rear wheel arch in another perspective of an embodiment of the present invention;

[0033] Figure 13 This is a schematic diagram of the lower vehicle body in an embodiment of the present invention;

[0034] Figure 14 This is a top view of the lower body structure in an embodiment of the present invention;

[0035] Figure 15 This is a structural schematic diagram of the lower vehicle body from another perspective in an embodiment of the present invention;

[0036] Figure 16 This is a schematic diagram of the spring seat in an embodiment of the present invention;

[0037] Figure 17 This is a schematic diagram of the lower vehicle body at the spring seat in an embodiment of the present invention.

[0038] Explanation of reference numerals in the attached figures:

[0039] 1. Upper body; 11. Coat rack; 112. Speaker mounting point; 12. Coat rack crossbeam; 13. Rear side panel; 131. Side beam; 132. Side panel inner panel; 133. C-pillar inner panel; 134. Third reinforcing member; 14. First reinforcing member; 141. First reinforcing body; 142. First support part; 143. Second support part; 144. Third support part; 15. First side panel outer reinforcing plate; 16. Second side panel outer reinforcing plate; 17. Rear windshield crossbeam; 18. Second reinforcing member; 19. Bridging member; 191. First bridging member; 192. Second bridging member;

[0040] 2. Lower body; 21. Rear wheel cover; 211. Outer wheel cover; 212. Inner wheel cover; 213. First shock absorber mounting seat; 2131. First mounting surface; 2132. First side surface; 214. Second shock absorber mounting seat; 2141. Second mounting surface; 2142. Second side surface; 2143. Third side surface; 215. First reinforcing rib; 216. Second reinforcing rib; 22. C-ring crossbeam; 221. Web plate; 23. Seat crossbeam; 24. Middle floor; 241. Floor body; 242. First connecting part; 243. Boss structure; 244 245. Third reinforcing rib; 246. Fourth reinforcing rib; 247. Fifth reinforcing rib; 248. Sixth reinforcing rib; 2471. Z-shaped reinforcing rib; 2472. U-shaped reinforcing rib; 25. Seat mounting base; 26. Rear longitudinal beam; 261. Spring seat; 2611. Seat body; 2612. Circular rib; 2613. L-shaped rib; 262. Seventh reinforcing rib; 2621. Vertical rib plate; 2622. Transverse rib plate; 263. Rear subframe mounting point; 27. Rear crossbeam; 271. Crossbeam body; 272. Second connecting part; 28. Eighth reinforcing rib. Detailed Implementation

[0041] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0042] In the attached figures, the Z-axis represents the vertical direction, i.e., the up-down position, with the positive direction of the Z-axis (i.e., the direction the arrow points) representing upwards and the negative direction representing downwards. The X-axis represents the horizontal direction and is designated as the front-back position, with the positive direction of the X-axis representing the front side and the negative direction representing the back side. The Y-axis represents the left-right position, with the positive direction of the Y-axis representing the left side and the negative direction representing the right side. It should be noted that the aforementioned representations of the Z-axis, Y-axis, and X-axis are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

[0043] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in sequences other than those illustrated or described herein.

[0044] Combination Figure 1 and Figure 2As shown, this embodiment of the invention provides a rear vehicle structure, including an upper body 1 and a lower body 2. The upper body 1 includes a coat rack 11, a coat rack crossbeam 12, a rear side panel 13, and a first reinforcing member 14. The rear side panel 13 is located on both sides of the upper body 1 along the left-right direction of the vehicle. The lower body 2 includes a rear wheel arch 21 and a C-ring crossbeam 22. The rear wheel arch 21 is located on both sides of the lower body 2 along the left-right direction and is connected to the corresponding rear side panel 13. The two ends of the C-ring crossbeam 22 extend upward to the corresponding rear wheel arch 21 along the left-right direction, and the two ends of the coat rack crossbeam 12 extend downward to the corresponding rear wheel arch 21 along the left-right direction, and overlap with the two ends of the C-ring crossbeam 22 along the left-right direction. The first reinforcing member 14 is located inside the rear side panel 13 and above the coat rack 11, and is correspondingly arranged with the rear side panel 13. The two ends of the first reinforcing member 14 along the up-down direction of the vehicle are connected to the coat rack 11 and the corresponding rear side panel 13, respectively.

[0045] It should be noted that the vehicle's left and right directions are... Figure 1 In the Y-axis direction, the vertical direction of the vehicle is... Figure 1 In the Z-axis direction, correspondingly, the vehicle's forward and backward direction is... Figure 1 In the X-axis direction.

[0046] Specifically, each of the left and right rear sides of the vehicle body is provided with a rear side panel 13 and a rear wheel arch 21, and the left and right rear wheel arches 21 are respectively connected to the corresponding rear side panels 13. The left and right ends of the coat rack 11 are respectively connected to the left and right rear side panels 13 of the upper body 1. The coat rack crossbeam 12 is usually connected to the lower end of the coat rack 11, and the left and right ends of the coat rack crossbeam 12 are also respectively connected to the left and right rear side panels 13 of the upper body 1. The middle part of the coat rack crossbeam 12 is usually set along the left and right direction of the vehicle, while the left and right ends of the coat rack crossbeam 12 extend downward to the rear wheel arch 21 and are connected to the side of the rear wheel arch 21 facing the inside of the vehicle (i.e., the inner side of the rear wheel arch 21). At the same time, the left and right ends of the coat rack crossbeam 12 are respectively connected to the rear wheel arch 21. The C-ring crossbeam 22 is located below the coat rack crossbeam 12, and the middle part of the C-ring crossbeam 22 usually extends along the left and right direction of the vehicle. The left and right ends of the C-ring crossbeam 22 extend upward to the rear wheel arch 21 and overlap with the coat rack crossbeam 12 on the side of the rear wheel arch 21 facing inward, so that the coat rack crossbeam 12 of the upper body 1 and the C-ring crossbeam 22 of the lower body 2 overlap on the rear wheel arch 21, forming a complete and closed force transmission loop. Figure 2(The bolded lines represent the closed force transmission loop). Additionally, a first reinforcing member 14 is provided on the inner side of the rear panel 13 and above the coat rack 11, with the first reinforcing member 14 corresponding to the rear panel 13. That is, a first reinforcing member 14 is provided at each of the left and right ends of the coat rack 11, and the first reinforcing member 14 is located within the area enclosed by the rear panel 13 and the coat rack 11. Simultaneously, the upper end of the first reinforcing member 14 is connected to the inner side of the corresponding rear panel 13, and the lower end of the first reinforcing member 14 is connected to the coat rack 11.

[0047] In this embodiment, the left and right ends of the coat rack beam 12 of the upper vehicle body 1 can be extended downward to the rear wheel arch 21, and the left and right ends of the C-ring beam 22 of the lower vehicle body 2 can be extended upward to the rear wheel arch 21. The left and right ends of the coat rack beam 12 and the left and right ends of the C-ring beam 22 can be overlapped on the rear wheel arch 21 to form a complete and closed force transmission loop, thereby improving the torsional stiffness of the rear structure of the vehicle body and improving the durability and road noise performance of the rear structure of the vehicle body. In addition, the rigidity of the upper body 1 can be improved by setting a first reinforcing member 14 on the inner side of the rear side panel 13 and above the coat rack 11. At the same time, the upper and lower ends of the first reinforcing member 14 are respectively connected to the coat rack 11 and the corresponding rear side panel 13, so that the first reinforcing member 14 is connected to the closed force transmission loop, thereby improving the rigidity of the joint between the upper body 1 and the lower body 2. Moreover, the first reinforcing member 14, together with the coat rack crossbeam 12 and the C-ring crossbeam 22 that form the closed force transmission loop, together form a key force transmission path that can transmit force in the vertical and horizontal directions, thereby effectively suppressing the vibration of the upper body 1 in the vertical and horizontal directions and further improving the road noise problem.

[0048] Furthermore, the lower body 2 is made of cast aluminum in one piece. This reduces the weight of the lower body 2 and achieves a lightweight design.

[0049] Optionally, combined Figure 3 and Figure 4 As shown, the first reinforcing member 14 includes a first reinforcing body 141, a first supporting part 142 and a second supporting part 143. The first supporting part 142 and the second supporting part 143 are respectively disposed at both ends of the first reinforcing body 141 in the vertical direction. The first supporting part 142 is connected to the corresponding rear side panel 13 for connection with the rear windshield, and the second supporting part 143 is connected to the coat rack 11.

[0050] In this embodiment, the first reinforcing body 141 can be a flat plate structure, or an L-shaped or U-shaped plate structure, etc., and the first support portion 142 and the second support portion 143 can be a flanged structure or a support foot structure. For example, Figure 3The document provides an example where the first reinforcing body 141 has a U-shaped plate structure, the first support portion 142 has a flanged structure, and the second support portion 143 has a support foot structure. The first support portion 142 and the second support portion 143 are typically located on the side of the first reinforcing body 141 facing the vehicle interior, i.e., outside the area enclosed by the rear side panel 13, the first reinforcing body 141, and the coat rack 11, to facilitate assembly using welded connections. The rear side panel 13, for example, the inner side panel 132 (described later), typically has an adhesive surface for bonding the rear windshield, and the first support portion 142 is supported at the lower end of this adhesive surface, allowing the first reinforcing member 14 to further provide vertical support to the rear windshield, reducing rear windshield vibration and further improving noise levels.

[0051] Optionally, combined Figure 3 and Figure 4 As shown, the first reinforcing member 14 also includes a third support portion 144. The third support portion 144 is disposed at both ends of the first reinforcing body 141 along the front-rear direction of the vehicle and connected to the corresponding rear side panel 13. The first support portion 142, the third support portion 144 and the second support portion 143 are arranged sequentially along the vertical direction.

[0052] In this embodiment, similar to the first support portion 142 and the second support portion 143, the third support portion 144 can be a flanged structure or a support foot structure. Thus, by providing the third support portion 144 at both the front and rear ends of the first reinforcing body 141 and connecting the third support portion 144 to the corresponding rear side panel 13, the first reinforcing member 14 can provide support to the rear side panel 13 in the left-right direction. This not only ensures the stability of the connection between the first reinforcing member 14 and the rear side panel 13 but also further improves the support strength of the first reinforcing member 14.

[0053] Optionally, combined Figure 2 , Figures 6 to 8 As shown, the rear side panel 13 includes a side beam 131, a side panel inner plate 132, and a C-pillar inner plate 133. The C-pillar inner plate 133 is connected to the lower end of the side panel inner plate 132. The side beam 131 is arranged opposite to the side panel inner plate 132 and is connected to the outside of the side panel inner plate 132. The upper body 1 also includes a first side panel outer reinforcing plate 15 and / or a second side panel outer reinforcing plate 16 arranged opposite to the end of the coat rack crossbeam 12 in the left and right direction. The first side panel outer reinforcing plate 15 overlaps the side beam 131 and the rear wheel arch 21 and forms a first cavity with the coat rack crossbeam 12. The second side panel outer reinforcing plate 16 overlaps the side beam 131 and the rear wheel arch 21 and forms a second cavity together with the side panel inner plate 132 and the C-pillar inner plate 133.

[0054] In this context, the outer side of the inner side panel 132 refers to the side of the inner side panel 132 facing outwards from the vehicle. Similarly, the outer side of the rear wheel arch 21 refers to the side of the rear wheel arch 21 facing outwards from the vehicle, and the outer side of the side beam 131 refers to the side of the side beam 131 facing outwards from the vehicle. Correspondingly, the inner side of the inner side panel 132 refers to the side of the inner side panel 132 facing inwards from the vehicle, the inner side of the rear wheel arch 21 refers to the side of the rear wheel arch 21 facing inwards from the vehicle, and the inner side of the side beam 131 refers to the side of the side beam 131 facing inwards from the vehicle.

[0055] Specifically, the rear side panel 13 is typically composed of an inner panel and an outer panel. The side beam 131 forms the outer panel of the rear side panel 13, and the inner panel 132 of the side panel and the inner panel 133 of the C-pillar form the inner panel of the rear side panel 13. A first outer reinforcing plate 15 of the side panel is connected to the outside of the inner panel 132 of the side panel and forms a first cavity with the coat rack crossbeam 12. A second outer reinforcing plate 16 of the side panel is connected to the outside of the inner panel 132 of the side panel and the inner panel 133 of the C-pillar and forms a second cavity with the inner panel 132 of the side panel and the inner panel 133 of the C-pillar. When the inner side panel 132 extends downward from the side beam 131 to connect with the outer wheel cover 211 of the rear wheel cover 21 (described later), the first outer side panel reinforcement plate 15 is connected to the outside of the inner side panel 132, and the left and right ends of the coat rack beam 12 are respectively connected to the inside of the corresponding inner side panel 132. At this time, the inner side panel 132 extends between the first outer side panel reinforcement plate 15 and the coat rack beam 12, so that the inner side panel 132 and the coat rack beam 12 form a first cavity. At this time, it is equivalent to the first outer side panel reinforcement plate 15 forming a first cavity through the inner side panel 132 and the coat rack beam 12. When the inner side panel 132 does not extend to connect with the outer wheel cover 211, the inner side panel 132 is located above the first outer side panel reinforcement plate 15 and the coat rack beam 12. At this time, the first outer side panel reinforcement plate 15 and the coat rack beam 12 form a first cavity. Furthermore, the upper end of the first side panel outer reinforcing plate 15 overlaps the outer side of the side beam 131, and the lower end overlaps the outer wheel cover 211 of the rear wheel cover 21. Similarly, the upper end of the second side panel outer reinforcing plate 16 overlaps the outer side of the side beam 131, and the lower end overlaps the outer wheel cover 211 of the rear wheel cover 21.

[0056] In this embodiment, a first side panel reinforcement plate 15 can be provided on the outer side of the rear side panel 13, and the first side panel reinforcement plate 15 and the coat rack crossbeam 12 can be used to form a first cavity, so that the rear side panel 13 and the coat rack crossbeam 12 form a cavity beam structure at the first side panel reinforcement plate 15. Alternatively, a second side panel reinforcement plate 16 can be provided on the outer side of the rear side panel 13, and the second side panel reinforcement plate 16, the inner side panel 132 and the C-pillar inner panel 133 can be used to form a second cavity, so that the rear side panel 13 forms a cavity beam at the second side panel reinforcement plate 16. The structure allows for improved bending and torsional resistance of the upper body 1 by utilizing the cavity beam structure. Simultaneously, by attaching the first side panel outer reinforcing plate 15 to the outer side of the side beam 131 and the rear wheel arch 21, the stiffness of the upper body 1 in the lateral direction is increased. And / or, by attaching the second side panel outer reinforcing plate 16 to the outer side of the side beam 131 and the rear wheel arch 21, the stiffness of the upper body 1 in the vertical direction is increased. Furthermore, the connection stiffness between the upper body 1 and the lower body 2 is also improved, further suppressing vibration of the rear structure of the vehicle body and improving vehicle durability and road noise.

[0057] Furthermore, combined Figure 9 As shown, the rear side panel 13 also includes a third reinforcing member 134. The second side panel outer reinforcing plate 16, the side panel inner plate 132 and the C-pillar inner plate 133 form a cavity. The third reinforcing member 134 is disposed in the cavity and connected to the connection between the side panel inner plate 132 and the C-pillar inner plate 133.

[0058] In this embodiment, a third reinforcing member 134 is provided at the connection between the inner C-pillar panel 133 and the inner side panel 132 of the rear side panel 13 to enhance the rigidity of the C-pillar joint, thereby improving the rigidity of the upper body 1.

[0059] Optionally, combined Figure 5 and Figure 10 As shown, the upper body 1 also includes a rear crossbeam 17 of the windshield and a second reinforcing member 18. The two ends of the coat rack 11 in the front-rear direction of the vehicle are respectively connected to the coat rack crossbeam 12 and the rear crossbeam 17 of the windshield. One end of the second reinforcing member 18 in the front-rear direction is connected to the coat rack crossbeam 12, and the other end is connected to the joint between the coat rack 11 and the rear crossbeam 17 of the windshield.

[0060] In this embodiment, the front end of the coat rack 11 overlaps the upper end of the coat rack crossbeam 12, and the rear end of the coat rack 11 overlaps the lower end of the windshield rear crossbeam 17. A second reinforcing member 18 extends in the front-to-back direction and is connected to the lower end of the coat rack 11. The second reinforcing member 18 can be one or more, for example... Figure 10The example given shows two second reinforcing members 18, arranged symmetrically from left to right. Furthermore, the front end of each second reinforcing member 18 connects to the coat rack crossbeam 12, and the rear end connects to the overlap between the coat rack 11 and the rear windshield crossbeam 17. This allows the coat rack 11, the second reinforcing members 18, and the rear windshield crossbeam 17 to form an I-shaped structure, improving the overall rigidity and modal characteristics of the coat rack 11, thereby mitigating road noise. Additionally, when the coat rack 11 has a speaker mounting point 112, this I-shaped structure provides a high-rigidity mounting point for the woofer, preventing sheet metal vibration during speaker operation and improving the user experience.

[0061] Furthermore, combined Figure 5 As shown, the upper body 1 also includes a bridging component 19, which is located at both ends of the rear crossbeam 17 of the windshield in the left-right direction. One end of the bridging component 19 is connected between the inner wheel cover 212 and the outer wheel cover 211 of the rear wheel cover 21, and the other end is connected to the end of the rear crossbeam 17 of the windshield in the left-right direction.

[0062] In this embodiment, the rear crossbeam 17 of the windshield is connected to the rear wheel arch 21 via a bridging member 19, so that the rear structure of the vehicle body forms an inverted U-shaped force transmission path at the rear crossbeam 17 of the windshield. Figure 5 The bolded lines (representing the inverted U-shaped force transmission path) can improve the overlap stiffness between the upper body 1 and the lower body 2, suppress vibration of the rear structure of the vehicle body, and improve vehicle durability and road noise. Moreover, by connecting one end of the bridging member 19 between the inner wheel cover 212 and the outer wheel cover 211 of the rear wheel cover 21, the connection between the bridging member 19 and the rear wheel cover 21 is strengthened by using the inner wheel cover 212 and the outer wheel cover 211 to hold the bridging member 19.

[0063] Furthermore, the bridging member 19 is connected to the side panel of the rear side panel 13 facing inward.

[0064] In this embodiment, a side panel can be installed at the rear crossbeam 17 of the windshield, and the bridging member 19 can be connected to the side panel to further improve the overlap rigidity of the upper body 1 and the lower body 2. Alternatively, the inner side panel 132 can be extended to connect with the outer wheel cover 211, such as... Figure 6 As shown, at this time, the inner side panel 132 is also equivalent to the outer side panel of the rear side panel 13. By connecting the bridging member 19 to the side of the inner side panel 132 facing the inside of the vehicle, the bridging member 19 is connected to the outer side panel, thereby further improving the overlap rigidity of the upper body 1 and the lower body 2.

[0065] Furthermore, combined Figure 6As shown, the bridging component 19 includes a first bridging component 191 and a second bridging component 192. One end of the first bridging component 191 is connected between the inner wheel cover 212 and the outer wheel cover 211, and the other end of the first bridging component 191 is connected to one end of the second bridging component 192. The other end of the second bridging component 192 is connected to the end of the rear crossbeam 17 of the windshield in the left-right direction. In this way, by adopting a segmented design for the bridging component 19, segmented production and processing are facilitated, reducing molding difficulty and increasing production efficiency.

[0066] Optionally, combined Figure 2 and Figure 11 As shown, the rear wheel cover 21 includes an outer wheel cover 211 and an inner wheel cover 212. The inner wheel cover 212 is provided with a first shock absorber mounting seat 213 and a second shock absorber mounting seat 214. The first shock absorber mounting seat 213 and the second shock absorber mounting seat 214 are formed by recesses in the inner wheel cover 212 toward the side where the outer wheel cover 211 is located. In this way, by forming the shock absorber mounting seat in a recessed manner on the inner wheel cover 212, the inner wheel cover 212 has a recessed platform structure at the shock absorber mounting seat, thereby improving the stiffness at the shock absorber mounting point.

[0067] Furthermore, combined Figure 11 As shown, the first shock absorber mounting base 213 and the second shock absorber mounting base 214 are provided with a first reinforcing rib 215 on the side opposite to the outer wheel cover 211.

[0068] In this embodiment, the first shock absorber mounting base 213 and the second shock absorber mounting base 214 are typically provided with shock absorber mounting holes. The first reinforcing rib 215 can be a cross-shaped rib, a vertical rib, or a combination of a cross-shaped rib and a vertical rib, such as... Figure 11 As shown, the cross-shaped ribs are typically positioned on the mounting surface of the shock absorber mounting base and are arranged circumferentially along the mounting hole of the shock absorber, while the vertical ribs are typically positioned on the vertically oriented side of the shock absorber mounting base. Thus, by providing first reinforcing ribs 215, such as cross-shaped ribs and vertical ribs, within the cavity of the shock absorber mounting base, the dynamic stiffness of the shock absorber mounting point is improved.

[0069] Furthermore, combined Figure 12 As shown, the inner wheel cover 212 is provided with a second reinforcing rib 216 on the side facing the outer wheel cover 211. The second reinforcing rib 216 is connected to the side of the second shock absorber mounting base 214 away from the first shock absorber mounting base 213.

[0070] In this embodiment, the first shock absorber mounting base 213 is typically located in front of the second shock absorber mounting base 214. The second reinforcing rib 216 is typically a Z-shaped reinforcing rib, and multiple Z-shaped reinforcing ribs are usually provided. These multiple Z-shaped reinforcing ribs are connected sequentially in the vertical direction, with the front end of the Z-shaped reinforcing rib connected to the side of the second shock absorber mounting base 214 away from the first shock absorber mounting base 213, and the rear end of the Z-shaped reinforcing rib connected to the rear end of the inner wheel cover 212. In this way, by providing second reinforcing ribs 216, such as Z-shaped reinforcing ribs, on the side of the inner wheel cover 212 facing the outer wheel cover 211, the dynamic stiffness of the shock absorber mounting point is further improved.

[0071] Optionally, combined Figure 12 As shown, the first shock absorber mounting base 213 includes a first mounting surface 2131 and a plurality of first side surfaces 2132. The plurality of first side surfaces 2132 are connected sequentially end to end along the circumference of the first mounting surface 2131. One end of each of the plurality of first side surfaces 2132 is connected to the first mounting surface 2131, and the other end is connected to the inner wheel cover 212. Adjacent first side surfaces 2132 are arranged at an obtuse angle. And / or, the second shock absorber mounting base 214 includes a second mounting surface 2141, second side surfaces 2142, and a plurality of third side surfaces 2143. The second side surfaces 2141... 42 and multiple third side surfaces 2143 are connected sequentially from end to end along the circumference of the second mounting surface 2141. One end of the second side surface 2142 and multiple third side surfaces 2143 are respectively connected to the second mounting surface 2141, and the other end is respectively connected to the inner wheel cover 212. The second side surface 2142 extends in the vertical direction, and two adjacent third side surfaces 2143 are arranged at right angles. The second side surface 2142 is parallel to the calibration side. The calibration side is the third side surface 2143 among the multiple third side surfaces 2143 that is arranged opposite to the second side surface 2142.

[0072] In this embodiment, for the first shock absorber mounting base 213, the first mounting surface 2131 of the first shock absorber mounting base 213 is usually provided with mounting holes for mounting shock absorbers. The multiple first side surfaces 2132 of the first shock absorber mounting base 213 are connected sequentially from end to end along the circumference of the first mounting surface 2131, and two adjacent first side surfaces 2132 are set at an obtuse angle, so that the first shock absorber mounting base 213 is roughly conical in shape. Thus, the high stiffness of the conical structure can be used to improve the stiffness of the first shock absorber mounting base 213, thereby improving the dynamic stiffness of the shock absorber mounting point. For the second shock absorber mounting base 214, the second mounting surface 2141 of the second shock absorber mounting base 214 is also usually provided with mounting holes for mounting shock absorbers. The second side 2142 and multiple third side 2143 of the second shock absorber mounting base 214 are connected sequentially from end to end along the circumference of the second mounting surface 2141. Moreover, the second side 2142 and one of the multiple third side 2143 are arranged opposite to each other and parallel to each other. Two adjacent third side 2143 are arranged at right angles, so that the second shock absorber mounting base 214 is roughly S-shaped. Thus, the higher stiffness of the S-shaped structure can be used to improve the stiffness of the first shock absorber mounting base 213, thereby improving the dynamic stiffness of the shock absorber mounting point.

[0073] Furthermore, combined Figure 11 and Figure 12 As shown, at least one first side 2132 of the first shock absorber mounting base 213 is located on the web 221 of the C-ring beam 22. This makes the front end face of the first shock absorber mounting base 213 coplanar with the rear end face of the C-ring beam 22, thereby utilizing the C-ring beam 22 to improve the stiffness of the first shock absorber mounting base 213.

[0074] Optionally, combined Figure 13 and Figure 14 As shown, the lower body 2 also includes a seat crossbeam 23 and a middle floor 24. The two ends of the middle floor 24 in the left and right directions are respectively connected to the corresponding rear wheel arches 21. The two ends of the middle floor 24 in the front and rear directions of the vehicle are respectively connected to the seat crossbeam 23 and the C-ring crossbeam 22. The middle floor 24 is provided with a boss structure 243, which is formed by the middle floor 24 protruding upward. The seat crossbeam 23 and the boss structure 243 are provided with seat mounting seats 25, which are used to install seats.

[0075] In this embodiment, the seat mounting base 25 is typically used to mount the seat slide rail. There are typically eight seat mounting bases 25 (i.e., seat mounting points): four on the seat crossbeam 23, two on the boss structure 243, and two on other parts of the middle floor 24. The two seat mounting bases 25 on the boss structure 243 and the two on other parts of the middle floor 24 correspond to the four seat mounting bases 25 on the seat crossbeam 23. Thus, by providing seat mounting bases 25 on the seat crossbeam 23 and the middle floor 24, mounting points for the seat are provided. Simultaneously, by placing some of the seat mounting bases 25 on the boss structure 243, the dynamic stiffness of the seat mounting points is improved.

[0076] Furthermore, combined Figure 13 and Figure 15 As shown, the boss structure 243 is provided with a third reinforcing rib 244 and / or a fourth reinforcing rib 245. The third reinforcing rib 244 is provided on the side of the boss structure 243 facing the inside of the vehicle and is arranged along the circumference of the boss structure 243. The fourth reinforcing rib 245 is provided on the side of the boss structure 243 facing the outside of the vehicle.

[0077] Specifically, the third reinforcing rib 244 is typically an arc-shaped rib. For the third reinforcing rib 244 located at the rear end of the boss structure 243, it connects to both the boss structure 243 and the C-ring crossbeam 22. For the third reinforcing ribs 244 located at the front end and both sides of the boss structure 243, they connect to the middle floor 24. The fourth reinforcing rib 245 is typically a combination of multiple triangular ribs and multiple quadrilateral ribs, and the fourth reinforcing rib 245 is typically located at the bottom of the surface where the seat mounting base 25 is located.

[0078] In this embodiment, a third reinforcing rib 244, such as a circular arc rib, can be provided on the side of the boss structure 243 facing inwards, and the third reinforcing rib 244 can be arranged along the circumference of the boss structure 243 to ensure the connection rigidity of the boss structure 243. And / or, by providing a fourth reinforcing rib 245, such as a combination of multiple triangular ribs and multiple quadrilateral ribs, on the side of the boss structure 243 facing outwards, the overall rigidity of the boss structure 243 can be improved. At the same time, the rigidity of the seat mounting point on the boss structure 243 can also be improved, thereby improving the seat mode, improving the vibration problem of the vehicle at high speeds, and effectively reducing the intrusion of the seat back in the case of trunk impact, thus improving the safety of rear passengers.

[0079] Furthermore, combined Figure 13 and Figure 14As shown, the middle floor 24 has multiple fifth reinforcing ribs 246 extending in the front-rear direction on the side facing the vehicle interior. That is, the fifth reinforcing ribs 246 have a straight reinforcing rib structure, and the height of the straight reinforcing rib structure is typically set at about 3mm. This is to improve the rigidity and modal characteristics of the middle floor 24.

[0080] Furthermore, combined Figure 13 and Figure 15 As shown, the middle floor 24 includes a floor body 241 and a first connecting part 242. A boss structure 243 is provided on the floor body 241. The two ends of the first connecting part 242 in the front-back direction are respectively connected to the floor body 241 and the C-ring beam 22. The protrusion height of the first connecting part 242 relative to the floor body 241 increases from the end of the first connecting part 242 connected to the floor body 241 to the end of the first connecting part 242 connected to the C-ring beam 22.

[0081] In this embodiment, the rear end of the boss structure 243 may or may not be connected to the front end of the first connecting part 242. In practical applications, it is generally preferred that the boss structure 243 is connected to the first connecting part 242. The protrusion height of the first connecting part 242 refers to the dimension of the first connecting part 242 in the vertical direction. The protrusion height of the first connecting part 242 increases from one end where the first connecting part 242 is connected to the floor body 241 to one end where the first connecting part 242 is connected to the C-ring crossbeam 22, that is, the protrusion height of the first connecting part 242 increases from front to back. In this way, the middle floor 24 protrudes upward at the first connecting part 242 to provide a larger assembly space for the lower end of the lower body 2, which facilitates the installation of chassis accessories.

[0082] Furthermore, combined Figure 15 As shown, a sixth reinforcing rib 247 is provided on the side of the first connecting part 242 facing outward. The sixth reinforcing rib 247 includes a plurality of Z-shaped reinforcing ribs 2471 and a plurality of U-shaped reinforcing ribs 2472. The plurality of Z-shaped reinforcing ribs 2471 and the plurality of U-shaped reinforcing ribs 2472 are arranged in the left-right direction and are arranged from one end of the first connecting part 242 in the left-right direction to the other end. The Z-shaped reinforcing ribs 2471 extend from one end of the first connecting part 242 connected to the floor body 241 to one end of the first connecting part 242 connected to the C-ring crossbeam 22.

[0083] Specifically, the sixth reinforcing rib 247 is a combination of Z-shaped reinforcing ribs 2471 and U-shaped reinforcing ribs 2472. The Z-shaped reinforcing ribs 2471 and U-shaped reinforcing ribs 2472 are arranged in a left-right direction. Multiple Z-shaped reinforcing ribs 2471 and multiple U-shaped reinforcing ribs 2472 can be arranged alternately, or multiple Z-shaped reinforcing ribs 2471 can be concentrated in the part of the first connecting portion 242 corresponding to the boss structure 243, while multiple U-shaped reinforcing ribs 2472 can be arranged in other parts of the first connecting portion 242, such as... Figure 15 As shown, the specific arrangement order of the multiple Z-shaped reinforcing ribs 2471 and multiple U-shaped reinforcing ribs 2472 is not specified here.

[0084] In this embodiment, since there is a large height difference between the C-ring crossbeam 22 and the floor body 241, a sixth reinforcing rib 247, for example composed of a Z-shaped reinforcing rib 2471 and a U-shaped reinforcing rib 2472, is provided on the side of the first connecting part 242 facing outwards. This allows the C-ring crossbeam 22 and the middle floor 24 to be further connected through the sixth reinforcing rib 247, thereby improving the connection stiffness between the middle floor 24 and the C-ring crossbeam 22 and ensuring the stiffness continuity of the rear structure of the vehicle body in the front-rear direction. Moreover, by arranging the sixth reinforcing rib 247 from one end of the first connecting part 242 in the left-right direction to the other end, the sixth reinforcing rib 247 can be supported in the left-right direction to the front mounting point of the rear subframe, further improving the dynamic stiffness of the middle floor 24 and improving vibration isolation performance.

[0085] Optionally, combined Figure 13 , Figure 15 and Figure 17 As shown, the lower body 2 also includes a rear longitudinal beam 26 corresponding to the rear wheel cover 21. The rear longitudinal beam 26 is connected to the inner side of the corresponding rear wheel cover 21. The two ends of the C-ring crossbeam 22 in the left and right directions are respectively connected to the corresponding rear longitudinal beam 26. The rear longitudinal beam 26 is provided with a spring seat 261 and a seventh reinforcing rib 262. The spring seat 261 is located at the lower end of the rear longitudinal beam 26, and the seventh reinforcing rib 262 is located directly above the spring seat 261.

[0086] In this embodiment, each of the rear longitudinal beams 26 on the left and right sides of the lower body 2 is provided with a spring seat 261 for mounting shock absorber springs. The seventh reinforcing rib 262 is typically composed of two vertical ribs 2621 and at least one horizontal rib 2622. The horizontal rib 2622 is located between the two vertical ribs 2621, and both ends of the horizontal rib 2622 are connected to the two vertical ribs 2621 respectively. In this way, by providing a seventh reinforcing rib 262, for example composed of vertical ribs 2621 and horizontal ribs 2622, at the lower end of the spring seat 261, the dynamic stiffness of the spring mounting point is improved, thereby improving the dynamic stiffness of the chassis attachment point and the vehicle's vibration isolation performance, and improving road noise.

[0087] Furthermore, combined Figure 16As shown, the spring seat 261 includes a seat body 2611, a plurality of annular ribs 2612 and a plurality of L-shaped ribs 2613. The seat body 2611 is provided with spring mounting holes for mounting shock-absorbing springs. The seat body 2611 and the plurality of annular ribs 2612 are coaxially arranged. The plurality of annular ribs 2612 are arranged at radial intervals along the annular ribs 2612. The plurality of L-shaped ribs 2613 are arranged circumferentially along the annular ribs 2612. The L-shaped ribs 2613 include a vertical section and a horizontal section. The vertical section of the L-shaped ribs 2613 is arranged on the seat body 2611 in the up-down direction. The horizontal section of the L-shaped ribs 2613 is arranged radially along the annular ribs 2612 and intersects with the plurality of annular ribs 2612.

[0088] In this embodiment, the annular ribs 2612 are typically circular, and multiple annular ribs 2612 form a concentric circle structure. The vertical section of the L-shaped ribs 2613 is disposed on the seat body 2611, and the horizontal section of the L-shaped ribs 2613 intersects with multiple annular ribs 2612. This allows the spring seat 261 to employ a reinforcing rib structure with intersecting annular ribs 2612 and L-shaped ribs 2613 to further enhance the dynamic stiffness of the spring mounting point.

[0089] Furthermore, combined Figure 15 As shown, the lower end of the rear longitudinal beam 26 is also provided with a rear subframe mounting point 263 for mounting the rear suspension.

[0090] In this embodiment, there are typically four rear subframe mounting points 263, two on each of the left and right rear longitudinal beams 26. These two rear subframe mounting points 263 are positioned one in front of the other on the rear longitudinal beams 26, and are referred to as the front mounting point and the rear mounting point, respectively. The front mounting point is typically located at the left and right ends of the first connecting portion 242 of the center floor 24. This arrangement allows the lower body 2 to integrate not only seat mounting points but also rear suspension mounting points, achieving a high degree of integration of the lower body 2.

[0091] Furthermore, combined Figure 13 and Figure 14 As shown, the lower body 2 also includes a rear crossbeam 27. The rear crossbeam 27 includes a crossbeam body 271 and a second connecting part 272. The second connecting part 272 is provided at both ends of the crossbeam body 271 in the left-right direction and is connected to the corresponding rear longitudinal beam 26. The two ends of the rear longitudinal beam 26 in the front-rear direction are respectively connected to the C-ring crossbeam 22 and the second connecting part 272. The cross-sectional area of ​​the second connecting part 272 increases from the first end to the second end. The first end of the second connecting part 272 is the end where the second connecting part 272 is connected to the crossbeam body 271, and the second end of the second connecting part 272 is the end where the second connecting part 272 is connected to the rear longitudinal beam 26.

[0092] In this embodiment, the rear crossbeam 27 typically extends in the left-right direction, and its left and right ends are respectively connected to the rear ends of the rear longitudinal beams 26 on the left and right sides of the lower body 2. By increasing the cross-sectional area of ​​the second connecting portion 272 of the rear crossbeam 27 from the first end to the second end, the left and right ends of the rear crossbeam 27 are made into a trumpet-shaped structure, that is, the overlap between the rear crossbeam 27 and the rear longitudinal beam 26 is a trumpet-shaped overlap, which can improve the overlap stiffness and further improve the dynamic stiffness of the rear subframe mounting point 263.

[0093] Furthermore, combined Figure 15 As shown, the lower ends of the seat crossbeam 23, the C-ring crossbeam 22 and the rear crossbeam 27 are provided with an eighth reinforcing rib 28 extending in the left and right direction.

[0094] In this embodiment, an eighth reinforcing rib 28 is provided on the side of the seat crossbeam 23, C-ring crossbeam 22, and rear crossbeam 27 facing outwards. The eighth reinforcing rib 28 is typically a combination of V-shaped, X-shaped, and straight ribs. The V-shaped, X-shaped, and straight ribs are arranged in a left-right direction, and the arrangement order of the V-shaped, X-shaped, and straight ribs is not specifically limited. Thus, by providing an eighth reinforcing rib 28, such as V-shaped, X-shaped, and straight ribs, at the lower end of the seat crossbeam 23, C-ring crossbeam 22, and rear crossbeam 27, the rigidity of the seat crossbeam 23, C-ring crossbeam 22, and rear crossbeam 27 is improved, and the dynamic rigidity of the seat mounting point is also increased.

[0095] Another embodiment of the present invention provides a vehicle including the rear body structure as described above.

[0096] The beneficial effects of the vehicle in this embodiment compared to the prior art are the same as those of the rear body structure described above, and will not be repeated here.

[0097] While the present invention has been disclosed above, its scope of protection is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the scope of protection of the present invention.

Claims

1. A rear structure of a vehicle body, characterized in that, The vehicle includes an upper body (1) and a lower body (2). The upper body (1) includes a coat rack (11), a coat rack crossbeam (12), a rear side panel (13), and a first reinforcing member (14). The rear side panel (13) is located on both sides of the upper body (1) along the left-right direction of the vehicle. The lower body (2) includes a rear wheel cover (21) and a C-ring crossbeam (22). The rear wheel cover (21) is located on both sides of the lower body (2) along the left-right direction and is connected to the corresponding rear side panel (13). The C-ring beam (22) extends upward from both ends in the left and right directions to the corresponding rear wheel cover (21), and the coat rack beam (12) extends downward from both ends in the left and right directions to the corresponding rear wheel cover (21), and overlaps with both ends of the C-ring beam (22) in the left and right directions. The first reinforcing member (14) is located on the inner side of the rear side panel (13) and above the coat rack (11), and is correspondingly arranged with the rear side panel (13). The first reinforcing member (14) is connected to the coat rack (11) and the corresponding rear side panel (13) at both ends along the vertical direction of the vehicle. The lower body (2) also includes a seat crossbeam (23) and a middle floor (24). The two ends of the middle floor (24) along the left and right directions are respectively connected to the corresponding rear wheel arches (21). The two ends of the middle floor (24) along the front and rear directions of the vehicle are respectively connected to the seat crossbeam (23) and the C-ring crossbeam (22). The middle floor (24) is provided with a boss structure (243). The boss structure (243) is formed by the middle floor (24) protruding upward. The seat crossbeam (23) and the boss structure (243) are provided with seat mounting seats (25). The seat mounting seats (25) are used to install seats.

2. The rear structure of the vehicle body according to claim 1, characterized in that, The first reinforcing member (14) includes a first reinforcing body (141), a first support part (142), and a second support part (143). The first support part (142) and the second support part (143) are respectively disposed at both ends of the first reinforcing body (141) along the vertical direction. The first support part (142) is connected to the corresponding rear side panel (13) for connecting with the rear windshield. The second support part (143) is connected to the coat rack (11).

3. The rear structure of the vehicle body according to claim 2, characterized in that, The first reinforcing member (14) further includes a third support (144), which is disposed at both ends of the first reinforcing body (141) along the front-rear direction of the vehicle and connected to the corresponding rear side panel (13). The first support (142), the third support (144) and the second support (143) are arranged sequentially along the up-down direction.

4. The rear structure of the vehicle body according to claim 1, characterized in that, The rear side panel (13) includes a side beam (131), a side panel inner plate (132), and a C-pillar inner plate (133). The C-pillar inner plate (133) is connected to the lower end of the side panel inner plate (132). The side beam (131) is arranged opposite to the side panel inner plate (132) and is connected to the outside of the side panel inner plate (132). The upper body (1) also includes a first side outer reinforcing plate (15) disposed opposite to the end of the coat rack beam (12) in the left-right direction and / or a second side outer reinforcing plate (16) disposed opposite to the side inner plate (132). The first side outer reinforcing plate (15) overlaps the outside of the side beam (131) and the rear wheel cover (21) and forms a first cavity with the coat rack beam (12). The second side outer reinforcing plate (16) overlaps the outside of the side beam (131) and the rear wheel cover (21) and forms a second cavity together with the side inner plate (132) and the C-pillar inner plate (133).

5. The rear structure of the vehicle body according to claim 1, characterized in that, The upper body (1) also includes a rear windshield crossbeam (17) and a second reinforcing member (18). The coat rack (11) overlaps the coat rack crossbeam (12) and the rear windshield crossbeam (17) at both ends along the front-rear direction of the vehicle. The second reinforcing member (18) is connected at one end along the front-rear direction to the coat rack crossbeam (12) and at the other end to the overlap of the coat rack (11) and the rear windshield crossbeam (17).

6. The rear structure of the vehicle body according to claim 1, characterized in that, The rear wheel cover (21) includes an outer wheel cover (211) and an inner wheel cover (212). The inner wheel cover (212) is provided with a first shock absorber mounting seat (213) and a second shock absorber mounting seat (214). The first shock absorber mounting seat (213) and the second shock absorber mounting seat (214) are formed by the inner wheel cover (212) being recessed towards the side where the outer wheel cover (211) is located.

7. The rear structure of the vehicle body according to claim 6, characterized in that, The first shock absorber mounting base (213) includes a first mounting surface (2131) and a plurality of first side surfaces (2132). The plurality of first side surfaces (2132) are connected end to end along the circumference of the first mounting surface (2131). One end of the plurality of first side surfaces (2132) is connected to the first mounting surface (2131) and the other end is connected to the inner wheel cover (212). Adjacent two first side surfaces (2132) are set at an obtuse angle. And / or, the second shock absorber mounting base (214) includes a second mounting surface (2141), a second side surface (2142), and a plurality of third side surfaces (2143). The second side surface (2142) and the plurality of third side surfaces (2143) are connected end to end along the circumference of the second mounting surface (2141). One end of the second side surface (2142) and the plurality of third side surfaces (2143) are respectively connected to the second mounting surface (2141), and the other end is respectively connected to the inner wheel cover (212). The second side surface (2142) extends along the vertical direction, and two adjacent third side surfaces (2143) are arranged at right angles. The second side surface (2142) is parallel to the calibration side. The calibration side is the third side surface (2143) that is opposite to the second side surface (2142) among the plurality of third side surfaces (2143).

8. The rear structure of the vehicle body according to claim 1, characterized in that, The lower body (2) also includes a rear longitudinal beam (26) corresponding to the rear wheel cover (21). The rear longitudinal beam (26) is connected to the inner side of the corresponding rear wheel cover (21). The two ends of the C-ring crossbeam (22) along the left and right directions are respectively connected to the corresponding rear longitudinal beam (26). The rear longitudinal beam (26) is provided with a spring seat (261) and a seventh reinforcing rib (262). The spring seat (261) is located at the lower end of the rear longitudinal beam (26), and the seventh reinforcing rib (262) is located directly above the spring seat (261).

9. A vehicle, characterized in that, Includes the rear structure of the vehicle body as described in any one of claims 1-8.

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