Vehicle rear structure and vehicle

Abstract

Disclosed in the present application are a vehicle rear structure and a vehicle. In the vehicle rear structure, a quarter window area running through a side wall inner panel is provided on the side wall inner panel, and a D-pillar reinforcement panel, a roof crossmember and a roof rail outer panel are connected on an upper side of the quarter window area to form a first force transmission path; a first outer member and a first inner member are both fixed to a lower side of the quarter window area and located on outer and inner sides of the side wall inner panel, respectively; a C-pillar reinforcement upper panel is fixed on the outer side of the side wall inner panel, an upper end of the C-pillar reinforcement upper panel is fixedly connected to the roof rail outer panel, and the C-pillar reinforcement upper panel has a part extending from a front side of the quarter window area to a lower side of the quarter window area and fixedly connected to the first outer member; the C-pillar reinforcement upper panel, the first outer member and the first inner member are provided with openings facing the side wall inner panel; the side wall inner panel encloses a first outer cavity and a second outer cavity from front to back with the C-pillar reinforcement upper panel and the first outer member, and the side wall inner panel further encloses a first inner cavity with the first inner member; and on the front and rear sides of the second outer cavity and the first inner cavity, the first inner member, the side wall inner panel and the first outer member form a laminated structure, and are fixedly connected at the laminated structure.

Description

Rear structure, vehicle

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on January 31, 2024, with application number 202410139712.5 and application name “Vehicle Rear Structure, Vehicle”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to, but is not limited to, the technical field of vehicle structures, and in particular to a vehicle rear structure and a vehicle. Background Art

[0003] From the front to the rear, the vehicle's body structure forms a C-ring. In related art, this ring comprises at least portions of two opposing C-pillar assemblies and a roof cross member. Ideally, the C-ring should resemble a parallelogram with rounded corners. In vehicle design, the structural strength and design rationality of the C-ring are crucial factors in determining vehicle performance, including force transmission efficiency and torsional performance (e.g., torsional modes and torsional stiffness).

[0004] However, the current C-ring structure will lead to poor performance in terms of force transmission efficiency, stiffness, and torsional performance of the vehicle body. Summary of the Invention

[0005] The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.

[0006] The embodiments of the present application provide a vehicle rear structure and a vehicle. The following introduces various aspects of the embodiments of the present application.

[0007] In a first aspect, the present application provides a vehicle rear structure, comprising a side panel inner panel, a C-pillar reinforcement upper panel, a first outer member, a first inner member, a D-pillar reinforcement panel, a roof cross member, and a roof longitudinal beam outer panel; the side panel inner panel is provided with a rear quarter window area extending therethrough, the D-pillar reinforcement panel, the roof cross member, and the roof longitudinal beam outer panel are connected at the upper side of the rear quarter window area to form a first force transmission path; the first outer member and the first inner member are both fixed to the lower side of the rear quarter window area and are respectively located on the outer and inner sides of the side panel inner panel; the C-pillar reinforcement upper panel is fixed to the outer side of the side panel inner panel, the upper end of the C-pillar reinforcement upper panel is fixedly connected to the roof longitudinal beam outer panel, and the C-pillar reinforcement upper panel has a portion extending from the front side of the rear quarter window area to the lower side of the rear quarter window area and fixedly connected to the first outer member;

[0008] The C-pillar reinforcement upper plate, the first outer member and the first inner member all have a structure with an opening facing the side panel inner plate, and the first inner member is arranged opposite to the opening of the first outer member; the side panel inner plate respectively forms a first outer cavity and a second outer cavity with the C-pillar reinforcement upper plate and the first outer member from front to back, and the side panel inner plate also forms a first inner cavity with the first inner member; on the front and rear sides of the second outer cavity and the first inner cavity, the first inner member, the side panel inner plate and the first outer member form a stacked structure, and the three are fixedly connected at the stacked structure.

[0009] Optionally, the D-pillar reinforcement plate, the roof crossbeam and the top longitudinal beam outer panel are connected on the upper side of the rear corner window area to form an L-shaped first force transmission path; the first outer member and the C-pillar reinforcement upper panel are connected to form a Y-shaped second force transmission path, and the second force transmission path is connected to the first force transmission path through the C-pillar reinforcement upper panel; the upper part of the side panel inner panel is connected to the top longitudinal beam outer panel and the D-pillar reinforcement plate, and the first inner member and the side panel inner panel are connected to form a third force transmission path, and the third force transmission path is connected to the first force transmission path.

[0010] Optionally, the vehicle further comprises a second outer member and a second inner member, both located at the lower rear side of the rear quarter window area; the second outer member is located at the rear side of the first outer member, the second inner member is located at the rear side of the first inner member, the second outer member and the second inner member both have a structure with an opening facing the side panel inner plate, and the second inner member and the second outer member are arranged opposite to the opening; the side panel inner plate, at different positions thereof, respectively forms a third outer cavity and a second inner cavity with the second outer member and the second inner member;

[0011] The second outer member, the side panel inner plate and the second inner member form a stacked structure at the front and rear sides of the third outer cavity and the second inner cavity, and are fixedly connected at the stacked structure.

[0012] Optionally, the first inner part is aligned with the opening of the first outer part; the second inner part is aligned with the opening of the second outer part; the rear structure of the vehicle also includes a wheel arch outer panel, and the second outer part and the first outer part are fixedly connected to the wheel arch outer panel at their respective lower ends.

[0013] Optionally, a portion of the D-pillar reinforcement plate extends rearward and downward along the rear corner window area; this portion of the D-pillar reinforcement plate is fixedly connected to the upper end of the second outer member; the second outer member, the D-pillar reinforcement plate and the roof crossbeam are connected to form a fourth force transmission path; the fourth force transmission path has a direction that bypasses the rear corner window area from the rear side of the rear corner window area.

[0014] Optionally, it also includes a D-pillar inner panel; the D-pillar inner panel is fixedly connected to the roof crossbeam; the upper end of the second inner part is fixedly connected to the D-pillar inner panel; the second inner part, the D-pillar inner panel and the roof crossbeam are connected to form a fifth force transmission path; the fifth force transmission path has a direction that bypasses the rear corner window area from the rear side of the rear corner window area.

[0015] Optionally, it also includes a wheel arch inner panel; the lower end of the first inner component and the lower end of the second inner component are both fixedly connected to the wheel arch inner panel; on the wheel arch inner panel, a first convex groove and a second convex groove are formed extending from the outside toward the inside, the upper end of the first convex groove is the connection point between the lower end of the first inner component and the wheel arch inner panel, and the upper end of the second convex groove is the connection point between the lower end of the second inner component and the wheel arch inner panel.

[0016] Optionally, it also includes a functional bracket configured to provide a mounting point for the seat assembly, the functional bracket being located between the first inner part and the second inner part and fixedly connected to the first inner part and the second inner part; the first inner part, the second inner part and the functional bracket are connected to form an H-shaped structure.

[0017] Optionally, the functional bracket is also fixedly connected to the side inner panel; the connection between the functional bracket and the first inner part, the connection between the functional bracket and the second inner part, and the connection between the functional bracket and the side inner panel are respectively located at three different ends of the functional bracket; these three different ends are the rear end, the front end and the end close to the outside of the vehicle of the functional bracket.

[0018] In a second aspect, the present application also provides a vehicle comprising any of the above rear vehicle structures.

[0019] In summary, by designing a force transmission path including a first outer part and a C-pillar reinforcement upper plate near the rear corner window area, the force can be transmitted and consumed bypassing the rear corner window area. The present application can minimize the reduction in the vehicle body's force transmission efficiency caused by the inherent structure (i.e., the roof crossbeam and the C-pillar assembly are staggered in the front-to-rear direction) to ensure the vehicle body's force transmission efficiency; further, by forming three cavity structures near the rear corner window area, the present application can also ensure the vehicle body's torsional performance and stiffness; further, by arranging the first inner part, the first outer part and the C-pillar reinforcement upper plate, the present application can also ensure that the vehicle has good stiffness.

[0020] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the following specifically cites a preferred embodiment and describes it in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] FIG1 is a schematic diagram of the rear structure of a vehicle according to an embodiment of the present application.

[0022] FIG2 is an exploded view of the rear structure of the vehicle in an embodiment of the present application.

[0023] FIG3 is a comparison diagram of the side panel inner panel, the first outer member, the second outer member and the C-pillar reinforcement upper panel before and after assembly in an embodiment of the present application.

[0024] FIG4 is a schematic diagram 1 of the main force transmission path formed near the rear quarter window area in an embodiment of the present application (wherein the force transmission path is marked with a dotted line).

[0025] FIG5 is a second schematic diagram of the rear structure of the vehicle in an embodiment of the present application.

[0026] FIG6 is a second schematic diagram of the main force transmission path formed near the rear quarter window area in an embodiment of the present application (wherein the force transmission path is marked with a dotted line).

[0027] FIG7 is a partial schematic diagram of the rear structure of the vehicle in an embodiment of the present application.

[0028] FIG8 is an AA cross-sectional view in an embodiment of the present application.

[0029] FIG9 is an enlarged view of the arrow ① in FIG8 in the embodiment of the present application.

[0030] FIG10 is an enlarged view of the arrow ② in FIG8 in the embodiment of the present application.

[0031] FIG11 is a third schematic diagram of the rear structure of the vehicle in an embodiment of the present application.

[0032] FIG12 is a schematic diagram of the assembled first inner component, the functional bracket, and the second inner component in an embodiment of the present application.

[0033] Figure 13 is a comparison diagram of the first inner part, functional bracket and second inner part connected into an H-shaped structure in an embodiment of the present application before and after assembly with the side inner panel, second outer part and first outer part (the side inner panel is hidden).

[0034] Explanation of the reference numerals: 1-roof crossbeam, 2-side inner panel, 3-C-pillar reinforcement upper panel, 4-first outer part, 5-first inner part, 6-D-pillar reinforcement panel, 7-roof longitudinal beam outer panel, 8-first outer cavity, 9-second outer cavity, 10-first inner cavity, 11-C-pillar reinforcement lower panel, 12-wheel house outer panel, 13-D-pillar inner panel, 14-wheel house inner panel, 15-first convex channel, 16-second outer part, 17-second inner part, 18-convex rib, 19-second convex channel, 20-third outer cavity, 21-second inner cavity, 22-functional bracket. DETAILED DESCRIPTION

[0035] The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0036] The terms "first," "second," and the like in the description and claims of this application are used to distinguish similar objects, but not necessarily to describe a particular sequence or order.

[0037] In the description of this application, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediary. In some cases, when expressing that something is fixedly connected to something else, the specific connection method may also include an integral connection. For those skilled in the art, the specific meanings of the above terms can be understood based on the specific circumstances.

[0038] The terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside", "outside" and the like in this application indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are directions or positional relationships in which the products of this application are usually placed when in use. They are only for the convenience and simplification of description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on this application.

[0039] When used in this application, the terms "comprises," "comprising," or any other variations thereof, are intended to cover a non-exclusive inclusion that may include elements other than the listed elements and may also include additional elements not specifically listed.

[0040] In the description of this specification, the reference terms "one embodiment", "some embodiments", "exemplarily", "specific example", "optionally", "further", "more detailed description", "preferably", "also provided with", "also including" or "some examples" mean 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 application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0041] It should be noted that in the description of this application, the orientation or position relationship indicated by the term "end" etc. is based on the orientation or position relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0042] From the front to the rear, the vehicle's body structure forms a C-ring. In related art, this ring comprises at least portions of two opposing C-pillar assemblies and a roof cross member. Ideally, the C-ring should resemble a parallelogram with rounded corners. In vehicle design, the structural strength and design rationality of the C-ring are crucial factors in determining vehicle performance, including force transmission efficiency and torsional performance (e.g., torsional modes and torsional stiffness).

[0043] Research has found that for most vehicle models with rear quarter window areas (i.e., areas for translucent rear quarter window installations), if the roof crossbeam and C-pillar assembly are staggered along the vehicle's fore-aft direction, coupled with the styling limitations imposed by the rear quarter window area, the C-ring will exhibit a structural defect of transitional discontinuity, resulting in reduced force transmission efficiency and stiffness, as well as reduced torsional performance. Therefore, it is necessary to design a reasonable rear vehicle structure tailored to the discontinuous C-ring characteristics of such vehicle models, thereby maximizing force transmission efficiency, stiffness, and torsional performance. The following detailed description of the vehicle in the embodiments of this application is provided in conjunction with the accompanying drawings.

[0044] As shown in Figures 1 and 2, this embodiment provides a vehicle having a triangular rear quarter window at the rear. The left and right rear portions of the vehicle adopt a substantially identical design. Taking the right rear portion of the vehicle as an example, the right rear portion of the vehicle is provided with a C-pillar assembly, a D-pillar assembly, and a roof crossbeam 1, which is located diagonally behind the C-pillar assembly. In other words, the roof crossbeam 1 and the C-pillar assembly are staggered in the front-to-back direction, which results in the C-ring in this embodiment not having an ideal shape, but instead having a structural defect of a discontinuous transition. To address this, the rear structure of the vehicle in this embodiment adopts the following design:

[0045] As shown in Figures 3 and 5 , in addition to the aforementioned roof cross member 1, the rear portion of the vehicle also includes a side panel inner panel 2, a C-pillar reinforcement upper panel 3 (part of the C-pillar assembly), a first outer member 4, a first inner member 5, a D-pillar reinforcement panel 6 (part of the D-pillar assembly), and a roof longitudinal beam outer panel 7. The side panel inner panel 2 has a quarterlight area extending therethrough. The D-pillar reinforcement panel 6, the roof cross member 1, and the roof longitudinal beam outer panel 7 connect to form a first force transmission path above the quarterlight area. The first outer member 4 and the first inner member 5 are both fixed to the bottom side of the quarterlight area, located on the outer and inner sides of the side panel inner panel 2, respectively. The C-pillar reinforcement upper panel 3 is fixed to the outside of the side panel inner panel 2, with its upper end fixedly connected to the roof longitudinal beam outer panel 7. A portion of the C-pillar reinforcement upper panel 3 extends from the front of the quarterlight area to the bottom side of the quarterlight area and is fixedly connected to the first outer member 4.

[0046] It should be noted here that the side panel inner panel 2 of this embodiment is sometimes also referred to as the C-pillar inner panel, but it can be understood that only a part of the side panel inner panel 2 of this embodiment belongs to the C-pillar assembly.

[0047] Please refer to Figures 7 and 8. The C-pillar reinforcement upper plate 3, the first outer member 4 and the first inner member 5 all have a structure with an opening facing the side inner panel 2, and the first inner member 5 is arranged opposite to the opening of the first outer member 4; based on these opening arrangements, the side inner panel 2, from front to back, respectively forms two cavities, a first outer cavity 8 and a second outer cavity 9 with the C-pillar reinforcement upper plate 3 and the first outer member 4, and the side inner panel 2 and the first inner member 5 form a first inner cavity 10; as shown in Figures 8, 9 and 10, on the front and rear sides of the second outer cavity 9 and the first inner cavity 10, the first inner member 5, the side inner panel 2 and the first outer member 4 form a stacked structure, and the three are fixedly connected at the stacked structure.

[0048] Based on the above structure, when the vehicle is subjected to force, the force can be transmitted along the first outer member 4 to the C-pillar reinforcement upper plate 3, and then transmitted to the first force transmission path through the C-pillar reinforcement upper plate 3. Therefore, it can be understood that when force (due to vehicle movement) is transmitted from the bottom of the vehicle to the vicinity of the rear quarterlight area, the force can be transmitted and dissipated along the path of "first outer member 4 - C-pillar reinforcement upper plate 3 - roof longitudinal beam outer panel 7 - D-pillar reinforcement plate 6 - roof cross member 1", bypassing the rear quarterlight area, thereby ensuring the vehicle body's force transmission efficiency.

[0049] Furthermore, because the first inner member 5, first outer member 4, and C-pillar reinforcement upper panel 3, along with the side panel inner 2, respectively, enclose a first inner cavity 10, a second outer cavity 9, and a first outer cavity 8, and the first inner member 5 and first outer member 4 are positioned with their openings facing each other, this embodiment forms three cavity structures near the rear quarterlight area. It can be understood that the formation of these cavities enhances the torsional performance and rigidity of the vehicle body. Furthermore, because the first inner member 5, side panel inner 2, and first outer member 4 form a stacked structure and are fixedly connected at this stacked structure, it can be understood that the first inner member 5, side panel inner 2, first outer member 4, and C-pillar reinforcement upper panel 3 exhibit excellent stability, reliability, and modal properties, ensuring excellent rigidity of the vehicle body.

[0050] For the above vehicle, the following is a more detailed example setup:

[0051] Please continue to refer to Figure 8. The openings of the first inner member 5 and the first outer member 4 are opposite to each other, and the openings are basically aligned with each other. At the front and rear sides of the first outer cavity 8 and the first inner cavity 10, that is, at the points indicated by arrows ① and ②, as shown in Figures 9 and 10, the first outer member 4, the side inner panel 2 and the second outer member 16 form a stacked structure of three layers in total, and the first outer member 4, the side inner panel 2 and the second outer member 16 are welded together at the stacked structure.

[0052] Referring back to Figures 1 and 2 , the aforementioned roof longitudinal outer panel 7 extends in the front-to-rear direction, while the aforementioned roof cross member 1 extends in the left-to-right direction. A portion of the aforementioned D-pillar reinforcement plate 6 is located between the roof cross member 1 and the roof longitudinal outer panel 7, extending rearward and downward from this portion along the upper edge of the rear quarterlight area. In this embodiment, at the right rear portion of the vehicle, the D-pillar reinforcement plate 6, the roof cross member 1, and the roof longitudinal outer panel 7 connect above the rear quarterlight area to form an L-shaped first force transmission path (the L-shaped dashed line in Figure 1 near the first force transmission path is used to emphasize the direction of the first force transmission path).

[0053] Please continue to refer to Figures 2 and 3. The aforementioned side panel inner panel 2, first outer member 4 and C-pillar reinforcement upper panel 3 are all special-shaped bodies; the side panel inner panel 2 is welded to the top longitudinal beam outer panel 7 and the D-pillar reinforcement panel 6 at its upper part; the first outer member 4 has a structure in which its middle part bulges toward the outside of the vehicle, and its upper end and most of the front and rear edges are welded to the side panel inner panel 2; the C-pillar reinforcement upper panel 3 has an uneven concave shape, and its upper end is located in front of the front edge of the rear corner window area. It is welded to the top longitudinal beam outer panel 7 at its upper end, and has a direction extending downward from its upper end along the front edge of the rear corner window area; the part of the C-pillar reinforcement upper panel 3 located in the front side of the rear corner window area is welded to the front of the side panel inner panel 2, and the C-pillar reinforcement upper panel 3 is welded to most of the front edge of the first outer member 4 and the side panel inner panel 2 at its middle and lower end, on the lower side of the rear corner window area.

[0054] From the above, it can be seen that, as shown in Figure 4, the first outer part 4, the C-pillar reinforcement upper plate 3 and the top longitudinal beam outer plate 7 are actually connected to form a Y-shaped second force transmission path (the direction of the second force transmission path is emphasized by a dotted line in Figure 4. For the convenience of viewing the figure, the dotted line is pulled out of the structural diagram and indicated by the two-way arrow ③). The second force transmission path is connected to the aforementioned L-shaped first force transmission path through the C-pillar reinforcement upper plate 3.

[0055] Illustratively, the right rear portion of the vehicle is further provided with a C-pillar reinforcement lower plate 11 located below the C-pillar reinforcement upper plate 3. It is understood that the C-pillar reinforcement upper plate 3 and the C-pillar reinforcement lower plate 11 are welded together and form part of the rear door frame structure. As shown in FIG1 , the vehicle also illustratively includes a wheelhouse outer panel 12 located below the first outer member 4 and secured to the lower end of the first outer member 4 (e.g., by at least one of welding, screwing, or riveting) to further enhance the vehicle body's force transmission efficiency.

[0056] Continuing with Figure 5, similar to the first outer member 4, the first inner member 5, which faces the opening of the first outer member 4, is also a special-shaped member. The first inner member 5 has a central portion that protrudes toward the vehicle interior, with its upper end and most of its front and rear edges welded to the side panel inner panel 2. Referring to Figures 2, 5, and 11, a D-pillar inner panel 13 is also located at the right rear of the vehicle. This D-pillar inner panel 13 is located inboard of the D-pillar reinforcement plate 6 and is welded to the D-pillar reinforcement plate 6, the side panel inner panel 2, and the roof cross member 1. Returning to Figures 5 and 6, the first inner member 5 forms a third arc-shaped force transmission path with the side panel inner panel 2 (the third force transmission path is highlighted by a dashed line in Figure 6; for ease of viewing, the dashed line is drawn outside the structural diagram and indicated by the double-headed arrow ④). This third force transmission path connects to the first force transmission path. When force is applied from the vehicle's underbody, the force is transmitted and dissipated along the third force transmission path.

[0057] Illustratively, the vehicle also includes a wheelhouse inner panel 14 (specifically, cast aluminum). The first inner member 5 is secured to the wheelhouse inner panel 14 at its lower end (e.g., by at least one of welding, screwing, or riveting) to further enhance the vehicle body's force transmission efficiency. Illustratively, a first protrusion 15 is formed on the wheelhouse inner panel 14, extending inward from the outside. The upper end of the first protrusion 15 connects the lower end of the first inner member 5 and the wheelhouse inner panel 14. It will be appreciated that the provision of the first protrusion 15 facilitates improved force transmission efficiency from the vehicle underbody to the first inner member 5, as well as the secure connection between the first inner member 5 and the wheelhouse inner panel 14.

[0058] Referring back to Figures 1 and 3 , the vehicle also includes a second outer member 16 located at the lower rear side of the rear quarterlight area. This second outer member 16 is located behind the first outer member 4 and outside the side panel inner panel 2. It is a special-shaped member with its center portion protruding toward the vehicle's exterior, and its upper end and most of its front and rear edges welded to the side panel inner panel 2. For example, the upper end of the second outer member 16 is welded to the D-pillar reinforcement 6, while the lower end of the second outer member 16 is secured to the wheelhouse outer panel 12 (e.g., by at least one of welding, screwing, or riveting). As shown in Figure 4 , the second outer member 16, the D-pillar reinforcement 6, and the roof cross member 1 form an arcuate fourth force transmission path (the fourth force transmission path is emphasized by a dashed line in Figure 4 ; for ease of illustration, the dashed line is drawn outside the structural diagram and indicated by the double-headed arrow ⑤). When force is applied from the vehicle's underbody, the force is transmitted and dissipated along this fourth force transmission path.

[0059] In combination with the design of the aforementioned first outer component 4 and the C-pillar reinforcement upper plate 3, it can be seen that on the outer surface of the vehicle body, force transmission paths are respectively provided on the front and rear sides of the corner window area; on the front side of the corner window area, there is specifically a Y-shaped second force transmission path, which bypasses the rear corner window area from the front side and is connected to the first force transmission path; on the rear side of the corner window area, there is specifically an arc-shaped fourth force transmission path, which has a direction of bypassing the rear corner window area from the rear side of the rear corner window area.

[0060] Please continue to refer to Figure 5. The vehicle also includes a second inner member 17 located at the lower rear side of the rear quarter window area. The second inner member 17 is located behind the first inner member 5 and on the inner side of the side panel 2. It is a special-shaped member with its middle portion protruding toward the inside of the vehicle and most of its front and rear edges welded to the side panel 2. The upper end of the second inner member 17 is welded to the D-pillar inner panel 13.

[0061] As shown in Figure 6, the second inner part 17, the D-pillar inner panel 13 and the roof crossbeam 1 are connected to form a fifth force transmission path (the direction of the fifth force transmission path is emphasized by a dotted line in Figure 6. For the convenience of viewing the figure, the dotted line is pulled outside the structural diagram and indicated by the two-way arrow ⑥). When force is transmitted from the bottom of the vehicle, the force can be transmitted and consumed along the fifth force transmission path.

[0062] Please continue to refer to Figure 5. Similar to the first inner part 5, the lower end of the second inner part 17 is exemplarily fixedly connected to the wheel house inner panel 14 (by at least one of welding, screwing or riveting, for example); on the wheel house inner panel 14, two spaced ridges 18 are formed on the wheel house inner panel 14, extending from the outside to the inside, and these two ridges 18 form a second ridge 19. The upper end of the second ridge 19 is the connection between the lower end of the second inner part 17 and the wheel house inner panel 14; such a configuration is conducive to improving the force transmission efficiency from the bottom of the vehicle to the first inner part 5, and the stability of the connection between the first inner part 5 and the wheel house inner panel 14.

[0063] In addition, combined with the design of the aforementioned first inner part 5, it can be seen that on the inner surface of the vehicle body, force transmission paths are respectively provided on the front and rear sides of the corner window area; on the front side of the corner window area, there is specifically an arc-shaped third force transmission path, which bypasses the rear corner window area from the front side of the rear corner window area and is connected to the first force transmission path; on the rear side of the corner window area, there is specifically a fifth force transmission path, which has a direction of bypassing the rear corner window area from the rear side of the rear corner window area.

[0064] Continuing to refer to Figures 7 and 8 , to ensure torsional performance and rigidity of the vehicle body, the second outer member 16 and the second inner member 17 each have an opening facing the side inner panel 2. The second inner member 17 and the second outer member 16 are positioned opposite each other, with their openings substantially aligned. The side inner panel 2, at different locations, forms a third outer cavity 20 and a second inner cavity 21 with the second outer member 16 and the second inner member 17. Similarly to the design of the first inner member 5 and the first outer member 4, the second outer member 16, the side inner panel 2, and the second inner member 17 form a three-layer stacked structure in front of and behind the third outer cavity 20 and the second inner cavity 21, and are welded together at this stacked structure.

[0065] Thus, combined with the aforementioned arrangement of the first outer cavity 8, the second outer cavity 9, and the first inner cavity 10, it can be seen that the first outer cavity 8, the second outer cavity 9, and the third outer cavity 20 are arranged sequentially from front to back on the outer side of the side panel inner panel 2, while the first inner cavity 10 and the second inner cavity 21 are arranged sequentially from front to back on the inner side of the side panel inner panel 2. In this embodiment, the design of the first inner member 5, the first outer member 4, and the C-pillar reinforcement upper plate 3 is equivalent to strengthening the vehicle's C-ring structure, while the arrangement of the second inner member 17 and the second outer member 16 is equivalent to strengthening the vehicle's D-ring structure.

[0066] Referring back to Figures 5 and 12 , the vehicle illustratively also includes a functional bracket 22 configured to provide a secure mounting point for a seat assembly (not shown) within the vehicle, and the aforementioned second inner member 17 also provides a secure mounting point for the seat assembly within the vehicle. Specifically, the seat assembly includes a retractor and a power striker for the seat adjustment mechanism. The protruding middle portion of the second inner member 17 provides a mounting point for the power striker for the seat adjustment mechanism. The functional bracket 22 is a special-shaped member, the rear portion of which provides a support structure for the retractor, and the front portion of which provides a mounting point for the retractor. It is understood that, depending on the specific needs of those skilled in the art, the functional bracket 22 can provide additional mounting points for the seat assembly. For example, in a possible embodiment, the seat assembly also includes a seat belt guide ring, and the front portion of the functional bracket 22 can also provide a mounting point for the seat belt guide ring.

[0067] As described above, the functional bracket 22 is illustratively positioned between the first inner member 5 and the second inner member 17, and is connected to the first inner member 5 and the second inner member 17 to form an H-shaped structure, as shown in Figure 13. It will be appreciated that this H-shaped structure, combined with the aforementioned arrangement of the C-pillar reinforcement upper panel 3, the first inner member 5, the second inner member 17, the first outer member 4, the second outer member 16, and the side panel inner 2, ensures a secure and reliable connection between the functional bracket 22 and the seat assembly. Furthermore, the H-shaped structure formed by the functional bracket 22 further enhances the structural stability of the aforementioned six components, thereby ensuring vehicle body force transmission efficiency, torsional performance, and rigidity.

[0068] It should be further explained that, based on the direct or indirect connection between the functional bracket 22 and the aforementioned six parts, the seat assembly also has a good modality.

[0069] Continuing with Figure 5, the functional bracket 22 is exemplarily secured as follows: the functional bracket 22 is welded to the first inner member 5 and the second inner member 17 at its front and rear ends, respectively, and to the side panel 2 at its end closest to the vehicle (i.e., the right end). As can be seen, the functional bracket 22's connections with the first inner member 5, the second inner member 17, and the side panel 2 effectively form a triangular spatial structure. This arrangement ensures the stability of the functional bracket 22.

[0070] In summary, by designing a force transmission path including the first outer part 4 and the C-pillar reinforcement upper plate 3 near the rear corner window area, the force can be transmitted and consumed bypassing the rear corner window area. The present application can minimize the reduction in the vehicle body's force transmission efficiency caused by the inherent structure (i.e., the roof cross beam 1 and the C-pillar assembly are staggered in the front-to-rear direction) to ensure the vehicle body's force transmission efficiency; further, by forming three cavity structures near the rear corner window area, the present application can also ensure the torsional performance and stiffness of the vehicle body; further, by arranging the first inner part 5, the first outer part 4 and the C-pillar reinforcement upper plate 3, the present application can also ensure that the vehicle has good stiffness.

[0071] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A vehicle rear structure, comprising a side inner panel (2), a C-pillar reinforcement upper panel (3), a first outer member (4), a first inner member (5), a D-pillar reinforcement panel (6), a roof cross beam (1) and a roof longitudinal beam outer panel (7); the side inner panel (2) is provided with a rear corner window area passing through it, the D-pillar reinforcement panel (6), the roof cross beam (1) and the roof longitudinal beam outer panel (7) are connected to form a first force transmission path on the upper side of the rear corner window area; the first outer member (4) and the first inner member (5) are both fixed to the lower side of the rear corner window area and are respectively located on the outer and inner sides of the side inner panel (2); the C-pillar reinforcement upper panel (3) is fixed to the outer side of the side inner panel (2), the upper end of the C-pillar reinforcement upper panel (3) is fixedly connected to the roof longitudinal beam outer panel (7), and the C-pillar reinforcement upper panel (3) has a portion extending from the front side of the rear corner window area to the lower side of the rear corner window area and fixedly connected to the first outer member (4); The C-pillar reinforcement upper plate (3), the first outer member (4) and the first inner member (5) all have a structure with an opening toward the side inner member (2), and the first inner member (5) is arranged opposite to the opening of the first outer member (4); the side inner member (2) respectively forms a first outer cavity (8) and a second outer cavity (9) with the C-pillar reinforcement upper plate (3) and the first outer member (4) from front to back, and the side inner member (2) also forms a first inner cavity (10) with the first inner member (5); on the front and rear sides of the second outer cavity (9) and the first inner cavity (10), the first inner member (5), the side inner member (2) and the first outer member (4) form a stacked structure, and the three are fixedly connected at the stacked structure.

2. The vehicle rear structure according to claim 1, wherein: The D-pillar reinforcement plate (6), the roof crossbeam (1) and the top longitudinal beam outer plate (7) are connected on the upper side of the rear corner window area to form the first L-shaped force transmission path; the first outer member (4) and the C-pillar reinforcement upper plate (3) are connected to form a Y-shaped second force transmission path, and the second force transmission path is connected to the first force transmission path through the C-pillar reinforcement upper plate (3); the upper part of the side inner plate (2) is connected to the top longitudinal beam outer plate (7) and the D-pillar reinforcement plate (6), and the first inner member (5) and the side inner plate (2) are connected to form a third force transmission path, and the third force transmission path is connected to the first force transmission path.

3. The vehicle rear structure according to claim 1 or 2, wherein: The vehicle further comprises a second outer member (16) and a second inner member (17) both located at the lower rear side of the rear corner window area; the second outer member (16) is located at the rear side of the first outer member (4), the second inner member (17) is located at the rear side of the first inner member (5), the second outer member (16) and the second inner member (17) both have a structure with an opening facing the side inner panel (2), and the second inner member (17) is arranged opposite to the opening of the second outer member (16); the side inner panel (2) forms a third outer cavity (20) and a second inner cavity (21) with the second outer member (16) and the second inner member (17) at different positions thereof; On the front and rear sides of the third outer cavity (20) and the second inner cavity (21), the second outer member (16), the side inner panel (2) and the second inner member (17) form a stacked structure and are fixedly connected at the stacked structure.

4. The vehicle rear structure according to claim 3, wherein: The first inner part (5) is arranged to be aligned with the opening of the first outer part (4); the second inner part (17) is arranged to be aligned with the opening of the second outer part (16); the rear structure of the vehicle also includes a wheel arch outer panel (12), and the second outer part (16) and the first outer part (4) are fixedly connected to the wheel arch outer panel (12) at their respective lower ends.

5. The vehicle rear structure according to claim 3 or 4, wherein: A portion of the D-pillar reinforcement plate (6) extends rearward and downward along the rear corner window area; this portion of the D-pillar reinforcement plate (6) is fixedly connected to the upper end of the second outer member (16); the second outer member (16), the D-pillar reinforcement plate (6) and the roof crossbeam (1) are connected to form a fourth force transmission path; the fourth force transmission path has a direction of bypassing the rear corner window area from the rear side of the rear corner window area.

6. The vehicle rear structure according to claim 3 or 4, wherein: The invention also includes a D-pillar inner panel (13); the D-pillar inner panel (13) is fixedly connected to the roof cross beam (1); the upper end of the second inner member (17) is fixedly connected to the D-pillar inner panel (13); the second inner member (17), the D-pillar inner panel (13) and the roof cross beam (1) are connected to form a fifth force transmission path; the fifth force transmission path has a direction of bypassing the rear corner window area from the rear side of the rear corner window area.

7. The vehicle rear structure according to claim 3 or 4, wherein: It also includes a wheel house inner panel (14); the lower end of the first inner member (5) and the lower end of the second inner member (17) are fixedly connected to the wheel house inner panel (14); on the wheel house inner panel (14), a first convex channel (15) and a second convex channel (19) are formed on the wheel house inner panel (14) protruding from the outside to the inside, the upper end of the first convex channel (15) is the connection point between the lower end of the first inner member (5) and the wheel house inner panel (14), and the upper end of the second convex channel (19) is the connection point between the lower end of the second inner member (17) and the wheel house inner panel (14).

8. The vehicle rear structure according to claim 3 or 4, wherein: The invention also includes a functional bracket (22) configured to provide a mounting point for the seat assembly, wherein the functional bracket (22) is located between the first inner part (5) and the second inner part (17) and is fixedly connected to the first inner part (5) and the second inner part (17); the first inner part (5), the second inner part (17) and the functional bracket (22) are connected to form an H-shaped structure.

9. The vehicle rear structure according to claim 7, wherein: The functional bracket (22) is also fixedly connected to the side inner panel (2); the connection between the functional bracket (22) and the first inner part (5), the connection between the functional bracket (22) and the second inner part (17), and the connection between the functional bracket (22) and the side inner panel (2) are respectively located at three different ends of the functional bracket (22); the three different ends are the rear end, the front end and the end close to the outside of the vehicle of the functional bracket (22).

10. A vehicle, wherein: The vehicle comprises the rear vehicle structure according to any one of claims 1 to 9.

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