Vehicle body structure and vehicle

Abstract

This application relates to a vehicle body structure and a vehicle. The vehicle body structure includes a floor panel, seat frame crossbeams extending along the longitudinal direction of the vehicle and along the lateral direction of the vehicle. The seat frame crossbeams are located above the floor panel, and longitudinal beams are located below the floor panel. The longitudinal beams include a main beam, and at least one cavity is formed by the main beam. A reinforcing member connected to the inner wall panel of the main beam is disposed in the cavity. The reinforcing member includes a first reinforcing plate arranged at least partially parallel to the floor panel. A cavity is formed between the bottom plate of the main beam and the first reinforcing plate. The first reinforcing plate and the floor panel have corresponding first mounting holes constrained by first fasteners. The seat frame crossbeams are connected to the first reinforcing plate by the first fasteners. The main beam forms a z-direction reinforcement, improving the torsional resistance in the z-direction. The connection strength of the seat frame crossbeams is increased.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and in particular to a vehicle body structure and a vehicle. Background Technology

[0002] Car seats are an important part of a car. While ensuring the comfort of passengers, seats should also maintain sufficient strength to reduce the injury to passengers caused by vehicle deformation in the event of a collision.

[0003] Currently, the crossbeams of the seat frame are generally arranged on the floor panel. Since the floor panel is a flat structure, it has poor support performance for the seat and insufficient torsional stiffness. In the event of a collision, the rear floor is prone to tilting and deformation. Furthermore, the crossbeams of the seat frame cannot effectively distribute the impact force of the chassis and cannot effectively protect the safety of the occupants. Summary of the Invention

[0004] Therefore, it is necessary to provide a vehicle body structure to improve the torsional stiffness of the seat frame crossbeam.

[0005] This application provides a vehicle body structure, including a floor panel, a seat frame crossbeam extending along the front-rear direction of the vehicle and along the left-right direction of the vehicle, the seat frame crossbeam being located above the floor panel, the longitudinal beam being located below the floor panel, and the longitudinal beam including a main beam, at least forming a cavity within the main beam, the cavity being provided with a reinforcing member connected to the inner wall plate of the main beam, the reinforcing member including at least a first reinforcing plate arranged parallel to the floor panel, the bottom plate of the main beam forming a cavity at least between itself and the first reinforcing plate, the first reinforcing plate and the floor panel having corresponding first mounting holes constrained by first fasteners, the seat frame crossbeam being connected to the first reinforcing plate through the first fasteners.

[0006] In one embodiment, the main beam has a U-shaped cross-section, and the main beam and the floor panel enclose the cavity.

[0007] In one embodiment, the reinforcing member further includes a second reinforcing plate located below the first reinforcing plate and a connecting plate connecting the first and second reinforcing plates. At least a portion of the second reinforcing plate is arranged side by side with the bottom plate of the main beam and is connected to the bottom plate.

[0008] In one embodiment, the first reinforcing plate, the connecting plate, and the second reinforcing plate form a main structure with a C-shaped longitudinal section; or, the first reinforcing plate, the connecting plate, and the second reinforcing plate form a main structure with a Z-shaped longitudinal section.

[0009] In one embodiment, there are two reinforcing members arranged sequentially along the length of the longitudinal beam. The two reinforcing members are defined as a first reinforcing member and a second reinforcing member. The main structure of the first reinforcing member and the main structure of the second reinforcing member have the same longitudinal cross-sectional shape. Alternatively, the main structure of one of the first reinforcing member and the second reinforcing member has a C-shaped longitudinal cross-section, and the main structure of the other has a Z-shaped longitudinal cross-section.

[0010] In one embodiment, a shock absorber and a subframe are provided below the longitudinal beam. The second reinforcing plate of the first reinforcing member has a second mounting hole corresponding to the bottom plate of the main beam, which is constrained by a second fastener. The subframe is connected to the first reinforcing member through the second fastener. The second reinforcing plate of the second reinforcing member has a connection hole corresponding to the bottom plate of the main beam, which is connected to the shock absorber.

[0011] In one embodiment, there are two reinforcing members arranged sequentially along the length of the longitudinal beam. A reinforcing frame is provided between the two reinforcing members, and a cavity is formed between the reinforcing frame and the bottom plate of the main beam. At least one of the reinforcing members is connected to the reinforcing frame.

[0012] In one embodiment, the two reinforcing members are defined as a first reinforcing member and a second reinforcing member, respectively. The connecting plate of the first reinforcing member is defined as a first connecting plate. The reinforcing frame includes a third reinforcing plate that is parallel to and connected to the first connecting plate. The vehicle body structure also includes a subframe located below the longitudinal beam. The subframe is connected to the main beam by a second fastener. The bottom plate of the main beam has a first through hole through which a portion of the second fastener passes. The portion of the second fastener that passes through the first through hole is defined as the upper portion. The upper portion is located between the first connecting plate and the third reinforcing plate.

[0013] In one embodiment, a groove for accommodating the upper portion is formed between the third reinforcing plate and the first connecting plate, the groove extending along the height direction of the vehicle.

[0014] In one embodiment, the third reinforcing plate is fixedly connected to the corresponding positions of the first connecting plate on both sides of the clamping groove; or, at least one of the third reinforcing plate and the first connecting plate has a recessed portion formed in a direction away from each other, and the clamping groove is formed between the recessed portion and the corresponding position of the other plate.

[0015] In one embodiment, a shock absorber is provided below the longitudinal beam, and the second reinforcing plate of the second reinforcing member has a connecting hole corresponding to the bottom plate of the main beam for connecting the shock absorber.

[0016] In one embodiment, there are two longitudinal beams, which are spaced apart along the left and right direction of the vehicle. Each longitudinal beam has at least one reinforcing member. The left and right ends of the seat frame crossbeam are respectively connected to the first reinforcing plate on the corresponding side through the first fastener.

[0017] In one embodiment, the main beam includes two side plates spaced apart along the left-right direction of the vehicle, the left and right edges of the bottom plate are connected to the corresponding side plates, and the reinforcing member includes a mounting plate fixedly connected to the inner wall surface of at least one of the side plates, the mounting plate being connected to the first reinforcing plate.

[0018] This application also provides a vehicle, which includes a body structure, wherein the body structure is the body structure described in any of the above embodiments.

[0019] Compared with existing technologies, in the vehicle body structure provided in this application, the reinforcing member is housed within a cavity, which is formed by at least the main beam. The reinforcing member is connected to the inner wall panel of the main beam, and a cavity is formed between the first reinforcing plate of the reinforcing member and the bottom plate of the main beam. The presence of the cavity provides reinforcement in the z-direction within the main beam, improving torsional resistance in the z-direction. When the seat frame crossbeam is connected to the floor panel and the reinforcing member via the first fastener, the mounting point of the seat frame crossbeam is integrated onto the reinforcing member, increasing the connection strength of the seat frame crossbeam and improving the support performance for the seat. Furthermore, the connection between the seat frame crossbeam and the longitudinal beams also provides support and force transmission to the longitudinal beams, improving the torsional stiffness of the seat frame crossbeam and better ensuring occupant safety in the event of a collision. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a perspective view of a portion of the vehicle body structure according to an embodiment of this application;

[0022] Figure 2 This is a top view of a portion of the vehicle body structure according to an embodiment of this application;

[0023] Figure 3 for Figure 1 Top view of the middle section of the structure;

[0024] Figure 4 This is a front view (front view) of a portion of the vehicle body structure according to an embodiment of this application;

[0025] Figure 5 for Figure 1 Partial structural diagram;

[0026] Figure 6 for Figure 3 Top view of the middle section of the structure;

[0027] Figure 7 for Figure 6 A cross-sectional view along the AA direction;

[0028] Figure 8 for Figure 3 Left view of the middle section structure;

[0029] Figure 9 for Figure 8 A cross-sectional view along the BB direction;

[0030] Figure 10 for Figure 2 A schematic diagram of a partial structure;

[0031] Figure 11 for Figure 5 A sectional view;

[0032] Figure 12 for Figure 5 A cross-sectional view of the middle section of the structure.

[0033] Reference numerals: 100, First annular structure; 101, Second annular structure; 102, Annular support reinforcement structure; 11, Floor panel; 12, Rear floor crossbeam; 13, Floor crossbeam; 21, Left longitudinal beam; 22, Right longitudinal beam; 20, Main beam; 200, Chamber; 201, Base plate; 2011, First through hole; 202, Side plate; 203, Bending plate; 204, Cavity; 41, First reinforcing member; 411, First connecting plate; 42, Second reinforcing member; 421, Second connecting plate; 400. Cavity; 401. First reinforcing plate; 402. Second reinforcing plate; 403. Mounting plate; 404. First mounting hole; 405. Second mounting hole; 406. Connecting hole; 407. Second fastener; 43. Reinforcing frame; 431. Third reinforcing plate; 44. Fourth reinforcing plate; 45. Recess; 46. Gap; 5. Shock absorber; 6. Subframe; 8. Seat frame crossbeam; 81. Mounting frame; 9. Rear panel; 900. Third annular structure; 901. Fourth annular structure; 91. Chassis. Detailed Implementation

[0034] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0035] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," "side," "top," "bottom," and similar expressions used in this application's specification are merely for describing various exemplary structural parts and elements of this application. However, their use herein is for illustrative purposes only and is determined based on the exemplary orientations shown in the accompanying drawings, and does not represent the only possible implementation. Since the embodiments disclosed in this application can be arranged in different orientations, these terms indicating orientation are for illustrative purposes only and should not be considered as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0037] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0038] It should be noted that "axial arrangement" means that the overall arrangement direction is along the axial direction, including but not limited to axial extension, and may be at an angle to the axial direction.

[0039] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items.

[0040] See Figures 1-12 As shown, this application provides a vehicle body structure. The body structure includes a floor panel 11, longitudinal beams, and seat frame crossbeams 8. The seat frame crossbeams 8 extend along the left-right direction of the vehicle. The longitudinal beams extend along the front-rear direction of the vehicle and are located below the floor panel 11.

[0041] like Figure 1 As shown, there are two longitudinal beams, spaced apart along the left-right direction of the vehicle. The following explanation uses one of these beams as an example. The front-to-back direction (length direction) of the vehicle is the x-direction, the left-to-right direction (width direction) is the y-direction, and the up-down direction (vertical direction) is the z-direction.

[0042] The aforementioned longitudinal beam includes a main beam 20, which at least forms the aforementioned cavity 200. In some embodiments, the cross-section of the main beam 20 is U-shaped, and the cavity 200 is formed inside the main beam 20.

[0043] In this embodiment, the cross-section of the main beam 20 is U-shaped. Specifically, as shown... Figures 6-12 As shown, a cavity 200 is formed between the main beam 20 and the floor panel 11. A reinforcing member connected to the inner wall panel of the main beam 20 is disposed within the cavity 200. The reinforcing member includes a first reinforcing plate 401, at least a portion of which is arranged side-by-side with the floor panel 11. A cavity 204 is formed between the bottom plate 201 of the aforementioned main beam 20 and at least the first reinforcing plate 401. The first reinforcing plate 401 and the floor panel 11 are respectively provided with first mounting holes 404 that are constrained by first fasteners. The seat frame crossbeam 8 is connected to the first reinforcing plate 401 via the first fasteners.

[0044] Understandably, the reinforcing member is located within the cavity 200 formed by the main beam 20 and the floor panel 11, and is connected to the inner wall panel of the main beam 20. A cavity 204 is formed between the first reinforcing plate 401 of the reinforcing member and the bottom plate 201 of the main beam 20. The presence of the cavity 204 provides reinforcement in the z-direction within the main beam 20, improving torsional resistance in the z-direction. When the seat frame crossbeam 8 is connected to the floor panel 11 and the reinforcing member via the first fastener, the mounting point of the seat frame crossbeam 8 is integrated into the reinforcing member inside the main beam via the first fastener, increasing the connection strength of the seat frame crossbeam 8 and improving the support performance for the seat. Furthermore, the seat frame crossbeam 8 is connected to the longitudinal beam, providing support and force transmission to the longitudinal beam, improving the torsional stiffness of the seat frame crossbeam 8 in the y-direction, and better ensuring occupant safety in the event of a collision.

[0045] In this embodiment, the left and right ends of the aforementioned seat frame crossbeam 8 are respectively connected to the corresponding first reinforcing plate 401 and longitudinal beam via first fasteners. This increases the overall strength of the seat frame crossbeam 8, providing better support for the seat. The connection between the seat frame crossbeam 8 and the longitudinal beams on both sides creates a supporting force transmission effect on the longitudinal beams, improving the torsional stiffness of the seat frame crossbeam 8 in the y-direction.

[0046] Specifically, such as Figure 1 and Figure 3 As shown, both ends of the aforementioned seat frame crossbeam 8 are provided with mounting brackets 81. The mounting brackets 81 are connected to the corresponding side's first reinforcing plate 401 and longitudinal beam via first fasteners. Obviously, the aforementioned seat frame crossbeam 8 and mounting brackets 81 are both components of the seat frame.

[0047] The aforementioned reinforcing components also include a second reinforcing plate 402 located below the first reinforcing plate 401 and a connecting plate connecting the first reinforcing plate 401 and the second reinforcing plate 402. At least a portion of the second reinforcing plate 402 is arranged side-by-side with and connected to the bottom plate 201 of the main beam 20. It is understood that the presence of the second reinforcing plate 402 further increases the strength of the main beam 20, thereby improving the torsional stiffness of the seat frame crossbeam 8 in the z-direction and its support performance for the seat.

[0048] In one embodiment, the first reinforcing plate 401, the connecting plate, and the second reinforcing plate 402 form a main structure with a C-shaped longitudinal section. In another embodiment, the first reinforcing plate 401, the connecting plate, and the second reinforcing plate 402 form a main structure with a Z-shaped longitudinal section. It is understood that the shape of the aforementioned main structure ensures reinforcement in the Z-direction within the main beam 20, thereby improving torsional resistance in the Z-direction.

[0049] In this embodiment, there are two reinforcing members, arranged sequentially along the length of the longitudinal beam. It is understood that the presence of these two reinforcing members further increases the strength of the longitudinal beam, better ensuring the torsional stiffness of the seat frame crossbeam 8 and its support performance for the seat.

[0050] like Figures 6-12 As shown, two reinforcing members are defined as a first reinforcing member 41 and a second reinforcing member 42. In one embodiment, the main body structure of the first reinforcing member 41 and the main body structure of the second reinforcing member 42 have the same longitudinal cross-sectional shape. In this embodiment, as... Figure 7 and Figure 10 As shown, the longitudinal section of the main structure of one of the first reinforcing member 41 and the second reinforcing member 42 is C-shaped, and the longitudinal section of the main structure of the other is Z-shaped. That is, the longitudinal section of the main structure of the first reinforcing member 41 is C-shaped, and the longitudinal section of the main structure of the second reinforcing member 42 is Z-shaped. Alternatively, the longitudinal section of the main structure of the second reinforcing member 42 is C-shaped, and the longitudinal section of the main structure of the first reinforcing member 41 is Z-shaped.

[0051] It should be noted that the aforementioned C-shape includes, but is not limited to, the standard C-shape, including both the standard C-shape and C-shapes similar to the standard C-shape. For example, the connecting plate is arranged vertically, and both the first reinforcing plate 401 and the second reinforcing plate 402 are perpendicular to the connecting plate. Alternatively, the connecting plate may be arranged at an angle, while the first reinforcing plate 401 and the second reinforcing plate 402 are arranged in parallel.

[0052] The aforementioned Z-shape includes, but is not limited to, the standard Z-shape, including both the standard Z-shape and Z-shapes similar to the standard Z-shape. For example, the connecting plate is arranged vertically, and both the first reinforcing plate 401 and the second reinforcing plate 402 are perpendicular to the connecting plate.

[0053] A shock absorber 5 and a subframe 6 are provided below the aforementioned longitudinal beam. In some other embodiments, the second reinforcing plate 402 of the second reinforcing member 42 is provided with a second mounting hole corresponding to the bottom plate 201 of the main beam 20, which is constrained by the second fastener 407. The subframe 6 is connected to the second reinforcing member 42 through the second fastener 407. The second reinforcing plate 402 of the first reinforcing member 41 is provided with a connecting hole corresponding to the bottom plate 201 of the main beam 20, which is used to connect the shock absorber 5.

[0054] In this embodiment, such as Figure 7 As shown, the second reinforcing plate 402 of the first reinforcing member 41 has a second mounting hole 405 corresponding to the bottom plate 201 of the main beam 20, which is constrained by the second fastener 407. The second mounting hole 405 on the bottom plate of the main beam 20 is a first through hole 2011. Figure 7 and Figure 11 As shown, the subframe 6 is connected to the first reinforcing member 41 via a second fastener 407. Figure 12 As shown, the second reinforcing plate 402 of the second reinforcing member 42 has a connecting hole 406 for connecting the shock absorber 5, which corresponds to the bottom plate 201 of the main beam 20.

[0055] It is understandable that if Figure 10 and Figure 12 As shown, the installation positions of the shock absorber 5 and the subframe 6 with the corresponding reinforcement members, as well as the installation positions of the seat frame crossbeam 8 with the two reinforcement members, form a ring-shaped support reinforcement structure 102. This ring-shaped support reinforcement structure 102 can strengthen the support strength of each installation position. Since the shock absorber 5 is located between the chassis 91 and the longitudinal beam, it can more effectively disperse the impact force of the chassis to the upper part of the vehicle body, thereby reducing the impact force on the upper part of the vehicle body and improving the force transmission efficiency.

[0056] In this embodiment, such as Figure 7 and Figure 10 As shown, a reinforcing frame 43 is provided between the two reinforcing members. The reinforcing frame 43 is fixedly connected to the floor panel 11 and the main beam 20. A cavity 400 is formed between the reinforcing frame 43 and the bottom plate 201 of the main beam 20. At least one reinforcing member is connected to the reinforcing frame 43. It can be understood that the presence of the reinforcing frame 43 increases the strength of the connected reinforcing members, that is, increases the strength of the longitudinal beam, and at the same time increases the strength and torsional stiffness of the seat frame crossbeam 8 connected to the longitudinal beam.

[0057] like Figure 7 and Figure 10 As shown, the connecting plate of the first reinforcing member 41 is defined as the first connecting plate 411, and the connecting plate of the second reinforcing member 42 is defined as the second connecting plate 421. The aforementioned reinforcing frame 43 includes a third reinforcing plate 431 that is parallel to and connected to the first connecting plate 411. The subframe 6 is connected to the main beam 20 via a second fastener 407. The portion of the second fastener 407 that protrudes from the first through hole 2011 is defined as the upper portion, which is located between the first connecting plate 411 and the third reinforcing plate 431. It can be understood that the portion of the second fastener 407 that connects the subframe 6 and the main beam 20 is located between the third reinforcing plate 431 and the first connecting plate 411, which can strengthen the second fastener 407, reduce the probability of the second fastener 407 moving, and improve the reliability of the connection between the subframe 6 and the longitudinal beam.

[0058] like Figure 7 , Figure 9 and Figure 10As shown, in this embodiment, a fourth reinforcing plate 44 is fixedly connected to the upper surface of the bottom plate 201 of the main beam 20. The second reinforcing plate 402 of the first reinforcing member 41 is fixedly connected to the fourth reinforcing plate 44. The fourth reinforcing plate 44 has a second through hole at the position corresponding to the second mounting hole 405 for the second fastener 407 to pass through. It can be understood that the presence of the fourth reinforcing plate 44 improves the strength of the longitudinal beam, further improving the reliability of the subframe 6 installation and the torsional stiffness of the seat frame crossbeam 8.

[0059] Furthermore, if Figure 10 As shown, a clamping groove 46 for accommodating the upper portion is formed between the third reinforcing plate 431 and the first connecting plate 411, and the clamping groove 46 extends along the height direction of the vehicle. It can be understood that the presence of the clamping groove 46 reduces the probability of the second fastener 407 moving, while also allowing the second fastener 407 to be avoided to facilitate its installation.

[0060] There are several ways to form the groove 46. In one embodiment, the surface of the third reinforcing plate 431 facing the first connecting plate 411 is defined as the first plate surface, and the surface of the first connecting plate 411 facing the third reinforcing plate 431 is defined as the second plate surface. The first plate surface and / or the second plate surface are recessed in the direction away from each other to form a recessed area, and the groove 46 is formed between the recessed area and the other plate surface. In other embodiments, at least one of the third reinforcing plate 431 and the first connecting plate 411 is partially recessed in the direction away from each other to form a recessed portion 45, and the groove 46 is formed between the recessed portion 45 and the corresponding position of the other plate. In one embodiment, the recessed portion 45 is formed only on the third reinforcing plate 431, and the groove 46 is formed between the recessed portion 45 and the corresponding position of the first connecting plate 411. In another embodiment, the recessed portion 45 is formed only on the first connecting plate 411, and the groove 46 is formed between the recessed portion 45 and the corresponding position of the third reinforcing plate 431. In this embodiment, as... Figure 7 and Figure 10 As shown, both the third reinforcing plate 431 and the first connecting plate 411 have recesses 45, and the aforementioned groove 46 is formed between the two recesses 45.

[0061] Furthermore, the third reinforcing plate 431 is fixedly connected to the corresponding positions of the first connecting plate 411 on both sides of the clamping groove 46. In this way, while ensuring avoidance of the second fastener 407 and a certain degree of positioning, the strength of the first connecting plate 411 is improved.

[0062] The first and second fasteners 407 mentioned above can be screws or bolts, or other forms.

[0063] like Figure 9 and Figure 10As shown, the main beam 20 includes two side plates 202 spaced apart along the left-right direction of the vehicle. The left and right edges of the bottom plate 201 are connected to the corresponding side plates 202. The reinforcing member includes a mounting plate 403 fixedly connected to the inner wall of at least one side plate 202, and the mounting plate 403 is connected to the first reinforcing plate 401. Exemplarily, there may be one, two, or even more mounting plates 403. It can be understood that the presence of the mounting plate 403 increases the connection with the left and right walls of the main beam 20, improves the strength and stiffness of the longitudinal beam in the y-direction, and the reinforcing member designed in this way improves the overall strength and stiffness of the longitudinal beam, further ensuring the torsional stiffness of the seat frame crossbeam 8.

[0064] In one embodiment, mounting plates 403 are provided on both the left and right edges of the first reinforcing plates 401 of the first reinforcing member 41 and the second reinforcing member 42. The mounting plates 403 are fixed to the inner wall of the corresponding side plate 202 by welding. In another embodiment, mounting plates 403 are provided on the side edge of the first reinforcing plate 401 of the first reinforcing member 41 or the first reinforcing plate 401 of the second reinforcing member 42 near the seat frame crossbeam 8. The mounting plates 403 are fixed to the inner wall of the corresponding side plate 202 by welding. In this embodiment, mounting plates 403 are provided on both the left and right edges of the first reinforcing plate 401 of the first reinforcing member 41, and mounting plates 403 are provided on the side edge of the first reinforcing plate 401 of the second reinforcing member 42 near the seat frame crossbeam 8. The presence of the mounting plates 403 enables reinforcement of the longitudinal beam in the y-direction.

[0065] In addition, the top edges of the two side panels 202 extend in the left-right direction of the vehicle in a direction away from each other to form a bent plate 203, which is fixedly connected to the floor panel 11.

[0066] The aforementioned fixed connection can be achieved through welding, fixing with connectors, a combination of both, or other fixing methods. In this embodiment, welding is the primary method of fixing, which will not be described in detail here.

[0067] like Figures 1-4 As shown, the aforementioned vehicle body structure also includes a rear floor crossbeam 12. Both longitudinal beams extend along the longitudinal direction of the vehicle. The longitudinal beam located on the left is defined as the left longitudinal beam 21, and the longitudinal beam located on the right is defined as the right longitudinal beam 22. The rear floor crossbeam 12 is located above the rear floor panel 11 and extends along the left-right direction of the vehicle. The aforementioned seat frame crossbeam 8 is located behind the rear floor crossbeam 12, and the seat frame crossbeam 8, the left longitudinal beam 21, the rear floor crossbeam 12, and the right longitudinal beam 22 are sequentially connected to form a first annular structure 100. That is, the left and right ends of the seat frame crossbeam 8 and the rear floor crossbeam 12 are respectively connected to the left longitudinal beam 21 and the right longitudinal beam 22, thus forming the aforementioned first annular structure 100.

[0068] Understandably, the first annular structure 100 is connected to the rear floor crossbeam 12 via the seat frame crossbeam 8. On the one hand, this increases the overall rigidity of the vehicle body structure and reduces the degree of deformation of the vehicle body in the event of a collision. On the other hand, it further disperses and transmits the impact force of the collision, which can further improve the impact force transmission effect at the rear of the vehicle body and enhance collision safety.

[0069] like Figure 2 As shown, the aforementioned vehicle body structure also includes a floor crossbeam 13 located behind the seat frame crossbeam 8. The floor crossbeam 13 extends along the left-right direction of the vehicle and is sequentially connected to the left longitudinal beam 21, the seat frame crossbeam 8, and the right longitudinal beam 22 to form a second annular structure 101. That is, the left and right ends of the floor crossbeam 13 are connected to the left longitudinal beam 21 and the right longitudinal beam 22, respectively, while the left and right ends of the seat frame crossbeam 8 are connected to the left longitudinal beam 21 and the right longitudinal beam 22, respectively. This design forms the aforementioned second annular structure 101.

[0070] Understandably, both the seat frame crossbeam 8 and the floor crossbeam 13 are connected to the left longitudinal beam 21 and the right longitudinal beam 22, providing y-direction support for the left and right longitudinal beams 21 and 22, thus improving their torsional stiffness in the y-direction; furthermore, this enhances the rigidity of the vehicle body structure. In addition, the presence of the second annular structure 101 further disperses and transmits collision impact forces, further improving the collision force transmission effect at the rear of the vehicle body and enhancing collision safety.

[0071] The aforementioned vehicle body structure also includes a rear bulkhead 9 located behind the floor crossbeam 13. The rear bulkhead 9 is arranged along the left-right direction of the vehicle, and the left and right ends of the rear bulkhead 9 are connected to the left longitudinal beam 21 and the right longitudinal beam 22, respectively. Thus, the rear bulkhead 9 is sequentially connected with the left longitudinal beam 21, the floor crossbeam 13 and the right longitudinal beam 22 to form a third annular structure 900; and / or, the rear bulkhead 9 is sequentially connected with the left longitudinal beam 21, the seat frame crossbeam 8 and the right longitudinal beam 22 to form a fourth annular structure 901.

[0072] Understandably, the presence of the aforementioned third annular structure 900 and / or fourth annular structure 901 increases the rigidity of the vehicle body structure, can disperse and transmit the impact force of a rear collision, can further improve the impact force transmission effect at the rear of the vehicle body, and can enhance collision safety.

[0073] The presence of the first to fourth annular structures mentioned above improves the overall rigidity of the vehicle body structure and creates multiple collision force transmission paths. The collision force input from the rear panel is dispersed and transmitted along these multiple annular structures to the rear seat area. In other words, the impact force can be transmitted forward. For details of the force transmission paths, please refer to [link to details]. Figure 3The direction indicated by the middle arrow.

[0074] This application also discloses a vehicle including the aforementioned body structure.

[0075] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0076] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the patent protection scope of this application should be determined by the appended claims.

Claims

1. A vehicle body structure, comprising a floor panel (11), a longitudinal beam extending along the longitudinal direction of the vehicle, and a seat frame crossbeam (8) extending along the lateral direction of the vehicle, wherein the seat frame crossbeam (8) is located above the floor panel (11), the longitudinal beam is located below the floor panel (11), and the longitudinal beam includes a main beam (20), at least the main beam (20) forming a cavity (200), characterized in that, The cavity (200) is provided with a reinforcing member connected to the inner wall panel of the main beam (20). The reinforcing member includes a first reinforcing plate (401) arranged at least partially alongside the floor panel (11). The bottom plate (201) of the main beam (20) forms a cavity (204) with the first reinforcing plate (401). The first reinforcing plate (401) and the floor panel (11) are respectively provided with a first mounting hole (404) constrained by a first fastener. The seat frame crossbeam (8) is connected to the first reinforcing plate (401) through the first fastener.

2. The vehicle body structure according to claim 1, characterized in that: The main beam (20) has a U-shaped cross-section, and the main beam (20) and the floor panel (11) enclose the cavity (200).

3. The vehicle body structure according to claim 1, characterized in that: The reinforcing member also includes a second reinforcing plate (402) located below the first reinforcing plate (401) and a connecting plate connecting the first reinforcing plate (401) and the second reinforcing plate (402). At least part of the second reinforcing plate (402) is arranged side by side with the bottom plate (201) of the main beam (20) and is connected to the bottom plate (201).

4. The vehicle body structure according to claim 3, characterized in that: The first reinforcing plate (401), the connecting plate, and the second reinforcing plate (402) form a main structure with a C-shaped longitudinal section; or, the first reinforcing plate (401), the connecting plate, and the second reinforcing plate (402) form a main structure with a Z-shaped longitudinal section.

5. The vehicle body structure according to claim 4, characterized in that: There are two reinforcing members, which are arranged sequentially along the length of the longitudinal beam. The two reinforcing members are defined as the first reinforcing member (41) and the second reinforcing member (42). The main structure of the first reinforcing member (41) and the main structure of the second reinforcing member (42) have the same longitudinal cross-sectional shape; or, the main structure of one of the first reinforcing member (41) and the second reinforcing member (42) has a C-shaped longitudinal cross-section and the main structure of the other has a Z-shaped longitudinal cross-section.

6. The vehicle body structure according to claim 5, characterized in that: A shock absorber (5) and a subframe (6) are provided below the longitudinal beam. The second reinforcing plate (402) of the first reinforcing member (41) and the bottom plate (201) of the main beam (20) are respectively provided with a second mounting hole (405) that is constrained by the second fastener (407). The subframe (6) is connected to the first reinforcing member (41) through the second fastener (407). The second reinforcing plate (402) of the second reinforcing member (42) and the bottom plate (201) of the main beam (20) are respectively provided with a connecting hole for connecting the shock absorber (5).

7. The vehicle body structure according to claim 3, characterized in that: There are two reinforcing members, which are arranged sequentially along the length of the longitudinal beam. A reinforcing frame (43) is provided between the two reinforcing members. A cavity (400) is formed between the reinforcing frame (43) and the bottom plate (201) of the main beam (20). At least one of the reinforcing members is connected to the reinforcing frame (43).

8. The vehicle body structure according to claim 7, characterized in that: The two reinforcing members are defined as the first reinforcing member (41) and the second reinforcing member (42), respectively. The connecting plate of the first reinforcing member (41) is defined as the first connecting plate (411). The reinforcing frame (43) includes a third reinforcing plate (431) that is parallel to and connected to the first connecting plate (411). The vehicle body structure also includes a subframe (6) located below the longitudinal beam. The subframe (6) is connected to the main beam (20) by a second fastener (407). The bottom plate (201) of the main beam (20) has a first through hole (2011) through which a portion of the second fastener (407) passes. The portion of the second fastener (407) that passes through the first through hole (2011) is defined as the upper portion. The upper portion is located between the first connecting plate (411) and the third reinforcing plate (431).

9. The vehicle body structure according to claim 8, characterized in that: A groove (46) for accommodating the upper portion is formed between the third reinforcing plate (431) and the first connecting plate (411), the groove (46) extending along the height direction of the vehicle.

10. The vehicle body structure according to claim 9, characterized in that: The third reinforcing plate (431) is fixedly connected to the corresponding positions of the first connecting plate (411) on both the left and right sides of the clamping groove (46); or, At least one of the third reinforcing plate (431) and the first connecting plate (411) has a recessed portion (45) formed in a direction away from each other, and the groove (46) is formed between the recessed portion (45) and the corresponding position of the other plate.

11. The vehicle body structure according to claim 1, characterized in that: There are two longitudinal beams, which are spaced apart along the left and right direction of the vehicle. Each longitudinal beam has at least one reinforcing member. The left and right ends of the seat frame crossbeam (8) are respectively connected to the first reinforcing plate (401) on the corresponding side through the first fastener.

12. The vehicle body structure according to any one of claims 1 to 11, characterized in that: The main beam (20) includes two side plates (202) spaced apart along the left and right directions of the vehicle. The left and right edges of the bottom plate (201) are connected to the corresponding side plates (202). The reinforcing member includes a mounting plate (403) fixedly connected to the inner wall of at least one of the side plates (202). The mounting plate (403) is connected to the first reinforcing plate (401).

13. A vehicle, comprising a body structure, characterized in that, The vehicle body structure is the vehicle body structure according to any one of claims 1 to 12.

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