Vehicle body structure of vehicle and vehicle

Abstract

The invention relates to a vehicle body structure of a vehicle and the vehicle, the vehicle body structure of the vehicle comprises a floor panel, a seat framework cross beam extending in the front-back direction of the vehicle and extending in the left-right direction of the vehicle, the seat framework cross beam is located above the floor panel, a longitudinal beam is located below the floor panel, and the longitudinal beam comprises a main body beam; a cavity is at least formed by the main body beam, a reinforcing piece connected with an inner wall plate of the main body beam is arranged in the cavity, the reinforcing piece comprises a first reinforcing plate, at least part of the first reinforcing plate and the floor panel are arranged side by side, and a cavity is at least formed between a bottom plate of the main body beam and the first reinforcing plate. The first reinforcing plate and the floor panel are correspondingly provided with first mounting holes restrained by the first fasteners, and the seat framework cross beam is connected with the first reinforcing plate through the first fasteners. Reinforcement in the z direction is formed in the main body beam, and the torsion resistance in the z direction is improved. And the connection strength of the seat framework cross beam is improved.

Description

Technical Field

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

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

[0003] At present, the crossbeams of the seat frame are generally arranged on the floor panel. Since the floor panel is a flat structure, the supporting performance of the seat is poor and the torsional rigidity is insufficient. In the event of a collision, the rear floor is prone to sideways deformation, and the crossbeams of the seat frame cannot effectively share the impact force of the chassis and cannot effectively protect the safety of the occupants. Summary of the invention

[0004] Based on this, it is necessary to provide a vehicle body structure to achieve the purpose of improving the torsional rigidity of the seat frame crossbeam.

[0005] The present application provides a vehicle body structure, including a floor panel, a seat frame crossbeam extending along the front-to-rear direction of the vehicle and along the left-to-right direction of the vehicle, the seat frame crossbeam is located above the floor panel, the longitudinal beam is located below the floor panel, and the longitudinal beam includes a main body beam, at least a cavity is formed in the main body beam, a reinforcement connected to the inner wall plate of the main body beam is arranged in the cavity, the reinforcement includes a first reinforcement plate at least partially arranged side by side with the floor panel, a cavity is formed between the bottom plate of the main body beam and at least the first reinforcement plate, the first reinforcement plate and the floor panel are correspondingly provided with first mounting holes constrained by first fasteners, and the seat frame crossbeam is connected to the first reinforcement plate via the first fastener.

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

[0007] In one embodiment, the reinforcement member also includes a second reinforcement plate located below the first reinforcement plate and a connecting plate connecting the first reinforcement plate and the second reinforcement plate, and at least a portion of the second reinforcement plate is arranged side by side with the bottom plate of the main beam and 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 reinforcements, which are arranged in sequence along the length direction of the longitudinal beam. The two reinforcements are defined as a first reinforcement and a second reinforcement, and the main structure of the first reinforcement and the main structure of the second reinforcement have the same longitudinal cross-section shape; or, the main structure of one of the first reinforcement and the second reinforcement has a C-shaped longitudinal cross-section, and the main structure of the other has a Z-shaped longitudinal cross-section.

[0010] In one of the embodiments, a shock absorber and a subframe are provided below the longitudinal beam, and a second mounting hole constrained by a second fastener is provided in the second reinforcing plate of the first reinforcing member and the bottom plate of the main beam respectively, and the subframe is connected to the first reinforcing member via the second fastener, and a connecting hole for connecting the shock absorber is provided in the second reinforcing plate of the second reinforcing member and the bottom plate of the main beam respectively.

[0011] In one embodiment, there are two reinforcement members, which are arranged in sequence along the length direction of the longitudinal beam. A reinforcement frame is provided between the two reinforcement members. A cavity is enclosed between the reinforcement frame and the bottom plate of the main beam. At least one reinforcement member is connected to the reinforcement frame.

[0012] In one embodiment, the two reinforcements are respectively defined as a first reinforcement and a second reinforcement, the connecting plate of the first reinforcement is defined as a first connecting plate, the reinforcement frame includes a third reinforcement plate 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 through a second fastener, the bottom plate of the main beam is provided with a first through hole for a portion of the second fastener to pass through, the portion of the second fastener passing through the first through hole is defined as an upper portion, and the upper portion is located between the first connecting plate and the third reinforcement plate.

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

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

[0015] In one of the embodiments, a shock absorber is disposed below the longitudinal beam, and a connecting hole for connecting the shock absorber is correspondingly provided on the second reinforcing plate of the second reinforcing member and the bottom plate of the main beam.

[0016] In one embodiment, there are two longitudinal beams, which are arranged at intervals along the left-right direction of the vehicle, each longitudinal beam corresponds to at least one reinforcement member, and the left and right ends of the seat frame cross beam are respectively connected to the first reinforcement plate on the corresponding side through the first fastener.

[0017] In one embodiment, the main beam includes two side panels arranged at intervals along the left-right direction of the vehicle, the left and right edges of the bottom plate are connected to the side panels on the corresponding sides, and the reinforcement includes a mounting plate fixedly connected to the inner wall surface of at least one of the side panels, and the mounting plate is connected to the first reinforcement plate.

[0018] The present application also provides a vehicle, which includes a body structure, and the body structure is the body structure described in any one of the above embodiments.

[0019] Compared with the prior art, in the vehicle body structure provided by the present application, a reinforcement is arranged in a cavity, and the cavity is formed by at least a main beam, the reinforcement is connected to the inner wall plate of the main beam, and a cavity is formed between the first reinforcement plate of the reinforcement and the bottom plate of the main beam. The existence of the cavity forms a z-direction reinforcement in the main beam, thereby improving the torsion resistance in the z-direction. When the seat frame crossbeam is connected to the floor panel and the reinforcement by the first fastener, the installation point of the seat frame crossbeam is integrated on the reinforcement, thereby increasing the connection strength of the seat frame crossbeam and improving the support performance for the seat. In addition, the seat frame crossbeam is connected to the longitudinal beam, which can also form a supporting force transmission effect on the longitudinal beam, thereby improving the torsional stiffness of the seat frame crossbeam, and better ensuring the safety of the occupants when a collision occurs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 A three-dimensional diagram of a part of the vehicle body structure of an embodiment of the present application;

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

[0023] Figure 3 for Figure 1 A top view of the middle structure;

[0024] Figure 4 It is a front view (front view) of a part of the structure of the vehicle body structure of an embodiment of the present application;

[0025] Figure 5 for Figure 1 A partial structural diagram of

[0026] Figure 6 for Figure 3 A top view of the middle structure;

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

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

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

[0030] Fig.10 for Figure 2 Schematic diagram of the local structure;

[0031] Fig.11 for Figure 5 A cross-sectional view of

[0032] Fig.12 for Figure 5 Cross-sectional view of the middle structure.

[0033] Figure numerals: 100, first annular structure; 101, second annular structure; 102, annular support reinforcement structure; 11, floor panel; 12, cross beam on rear floor; 13, floor cross beam; 21, left longitudinal beam; 22, right longitudinal beam; 20, main beam; 200, chamber; 201, bottom plate; 2011, first through hole; 202, side plate; 203, bent plate; 204, cavity; 41, first reinforcement; 411, first connecting plate; 42, second reinforcement; 421, second connecting plate; 400, cavity; 401, first reinforcement plate; 402, second reinforcement plate; 403, mounting plate; 404, first mounting hole; 405, second mounting hole; 406, connecting hole; 407, second fastener; 43, reinforcement frame; 431, third reinforcement plate; 44, fourth reinforcement plate; 45, recessed portion; 46, clamping groove; 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 DESCRIPTION

[0034] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0035] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may also be a centered component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a centered component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right", "side", "top", "bottom" and similar expressions used in the specification of this application are only used to describe the various example structural parts and elements of the present application, but these terms are used here only for the purpose of convenience of explanation, and are determined based on the example orientations shown in the accompanying drawings, and do not represent the only implementation method. Since the embodiments disclosed in the application can be set in different directions, these terms indicating directions are only for illustration and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

[0036] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0037] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediate medium. Moreover, a first feature being “above”, “above” or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below” or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in 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 form an angle with the axial direction.

[0039] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more related listed items.

[0040] See also Figures 1 to 12 As shown, the present application provides a vehicle body structure. The vehicle body structure includes a floor panel 11, a longitudinal beam and a seat frame cross beam 8. The seat frame cross beam 8 extends along the left-right direction of the vehicle. The longitudinal beam extends along the front-back direction of the vehicle, and the longitudinal beam is located below the floor panel 11.

[0041] like Figure 1 As shown, there are two longitudinal beams, which are arranged at intervals along the left-right direction of the vehicle. The following description takes one of the longitudinal 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) of the vehicle is the y direction, and the up-down direction (vertical direction) of the vehicle is the z direction.

[0042] The longitudinal beam includes a main beam 20, and the cavity 200 is formed at least by the main beam 20. In some embodiments, the cross section of the main beam 20 is in a "mouth" shape, 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. Figure 6 to Figure 12 As shown, a cavity 200 is formed between the main beam 20 and the floor panel 11, and a reinforcement member connected to the inner wall plate of the main beam 20 is arranged in the cavity 200, and the reinforcement member includes a first reinforcement plate 401, and at least a part of the first reinforcement plate 401 is arranged side by side with the floor panel 11. A cavity 204 is formed between the bottom plate 201 of the main beam 20 and at least the first reinforcement plate 401, and the first reinforcement plate 401 and the floor panel 11 are correspondingly provided with a first mounting hole 404 constrained by a first fastener, and the seat frame crossbeam 8 is connected to the first reinforcement plate 401 through the first fastener.

[0044] It is understandable that the reinforcement is arranged in the chamber 200 surrounded by the main beam 20 and the floor panel 11, and is connected to the inner wall plate of the main beam 20. A cavity 204 is formed between the first reinforcement plate 401 of the reinforcement and the bottom plate 201 of the main beam 20. The existence of the cavity 204 forms a z-direction reinforcement in the main beam 20, which improves the torsion resistance in the z direction. When the seat frame crossbeam 8 is connected to the floor panel 11 and the reinforcement by the first fastener, the installation point of the seat frame crossbeam 8 is integrated on the reinforcement inside the main beam by the first fastener, which increases the connection strength of the seat frame crossbeam 8 and improves the support performance of the seat. In addition, the seat frame crossbeam 8 is connected to the longitudinal beam, which can also form a supporting force transmission effect on the longitudinal beam, improve the torsional stiffness of the seat frame crossbeam 8 in the y direction, and better ensure the safety of the occupants when a collision occurs.

[0045] In this embodiment, the left and right ends of the seat frame cross beam 8 are connected to the first reinforcing plate 401 and the longitudinal beam on the corresponding side by the first fastener. It can be understood that the strength of the overall connection of the seat frame cross beam 8 is increased to better support the seat. The seat frame cross beam 8 is connected to the longitudinal beams on the left and right sides, which can form a supporting force transmission effect on the longitudinal beams on the left and right sides, and improve the torsional stiffness of the seat frame cross beam 8 in the y direction.

[0046] Specifically, Figure 1 and Figure 3 As shown, both ends of the seat frame cross beam 8 are provided with mounting frames 81, and the mounting frames 81 are connected to the first reinforcing plate 401 and the longitudinal beam on the corresponding side through the first fastener. Obviously, the seat frame cross beam 8 and the mounting frames 81 are both components of the seat frame.

[0047] The reinforcement member further includes a second reinforcement plate 402 located below the first reinforcement plate 401 and a connecting plate connecting the first reinforcement plate 401 and the second reinforcement plate 402. At least part of the second reinforcement plate 402 is arranged side by side with the bottom plate 201 of the main beam 20 and connected to the bottom plate 201. It can be understood that the existence of the second reinforcement plate 402 further increases the strength of the main beam 20, thereby improving the torsional rigidity of the seat frame cross beam 8 in the z direction and the supporting performance of 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 can be understood that the shape of the above-mentioned main structure ensures that the z-direction reinforcement is formed in the main beam 20, thereby improving the torsion resistance in the z-direction.

[0049] In this embodiment, there are two reinforcing members, which are arranged in sequence along the length direction of the longitudinal beam. It can be understood that the existence of the two reinforcing members further increases the strength of the longitudinal beam, and better ensures the torsional rigidity of the seat frame cross beam 8 and the supporting performance of the seat.

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

[0051] It should be noted that the above C-shape includes but is not limited to the standard C-shape, including both the standard C-shape and the C-shape similar to the standard C-shape. For example, the connecting plate is arranged vertically, and the first reinforcing plate 401 and the second reinforcing plate 402 are both perpendicular to the connecting plate. For another example, the connecting plate is arranged obliquely, and the first reinforcing plate 401 and the second reinforcing plate 402 are arranged in parallel.

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

[0053] A shock absorber 5 and a subframe 6 are provided below the longitudinal beam. In other embodiments, a second mounting hole constrained by a second fastener 407 is provided in the second reinforcing plate 402 of the second reinforcing member 42 and the bottom plate 201 of the main beam 20, respectively. The subframe 6 is connected to the second reinforcing member 42 via the second fastener 407, and a connecting hole for connecting the shock absorber 5 is provided in the second reinforcing plate 402 of the first reinforcing member 41 and the bottom plate 201 of the main beam 20, respectively.

[0054] In this embodiment, if Figure 7 As shown, the second reinforcing plate 402 of the first reinforcing member 41 and the bottom plate 201 of the main beam 20 are provided with a second mounting hole 405 constrained by the second fastener 407, and the second mounting hole 405 on the bottom plate of the main beam 20 is a first through hole 2011. Figure 7 and Fig.11 As shown, the subframe 6 is connected to the first reinforcement member 41 via the second fastener 407. Fig.12 As shown, the second reinforcing plate 402 of the second reinforcing member 42 and the bottom plate 201 of the main beam 20 are provided with connecting holes 406 for connecting the shock absorber 5 .

[0055] It is understandable that if Fig.10 and Fig.12 As shown, the installation positions of the shock absorber 5 and the subframe 6 and the corresponding reinforcements, as well as the installation positions of the seat frame crossbeam 8 and the two reinforcements form an annular support reinforcement structure 102. This annular support reinforcement structure 102 can enhance the support strength of each installation position. Since the shock absorber 5 is arranged between the chassis 91 and the longitudinal beam, the impact force of the chassis can be more effectively dispersed to the upper part of the vehicle body, that is, the impact force on the upper part of the vehicle body is reduced, thereby improving the force transmission efficiency.

[0056] In this embodiment, if Figure 7 and Fig.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 enclosed between the reinforcing frame 43 and the bottom plate 201 of the main beam 20, and at least one reinforcing member is connected to the reinforcing frame 43. It can be understood that the existence of the reinforcing frame 43 improves the strength of the connected reinforcing member, that is, improves the strength of the longitudinal beam, and at the same time improves the strength and torsional rigidity of the seat frame cross beam 8 connected to the longitudinal beam.

[0057] like Figure 7 and Fig.10 As shown, the connecting plate of the first reinforcement 41 is defined as the first connecting plate 411, and the connecting plate of the second reinforcement 42 is defined as the second connecting plate 421. The reinforcement frame 43 includes a third reinforcement plate 431 parallel to and connected to the first connecting plate 411. The sub-frame 6 is connected to the main beam 20 through the second fastener 407, and the part of the second fastener 407 passing through the first through hole 2011 is defined as the upper part, and the upper part is located between the first connecting plate 411 and the third reinforcement plate 431. It can be understood that the part of the second fastener 407 that realizes the connection between the sub-frame 6 and the main beam 20 is located between the third reinforcement 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 help improve the reliability of the connection between the sub-frame 6 and the longitudinal beam.

[0058] like Figure 7 , Fig. 9 and Fig.10As shown, in this embodiment, a fourth reinforcing plate 44 is fixedly connected to the upper plate 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, and the fourth reinforcing plate 44 is provided with a second through hole for the second fastener 407 to pass through at a position corresponding to the second mounting hole 405. It can be understood that the existence of the fourth reinforcing plate 44 improves the strength of the longitudinal beam, further improves the reliability of the installation of the subframe 6 and the torsional rigidity of the seat frame crossbeam 8.

[0059] Furthermore, if Fig.10 As shown, a clip groove 46 for accommodating the upper part is formed between the third reinforcing plate 431 and the first connecting plate 411, and the clip groove 46 extends along the height direction of the vehicle. It can be understood that the existence of the clip groove 46 can reduce the probability of the second fastener 407 moving and avoid the second fastener 407 to facilitate the installation of the second fastener 407.

[0060] There are many ways to form the clamping groove 46. In one embodiment, the plate surface of the third reinforcing plate 431 facing the first connecting plate 411 is defined as the first plate surface, and the plate 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 toward the side away from each other to form a recessed area, and the aforementioned clamping 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 a direction away from each other to form a recessed portion 45, and a clamping groove 46 is formed between the recessed portion 45 and the corresponding position of the other plate. Among them, in one embodiment, the recessed portion 45 is formed only on the third reinforcing plate 431, and the aforementioned clamping 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 aforementioned clamping 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 Fig.10 As shown, a recessed portion 45 is formed on both the third reinforcing plate 431 and the first connecting plate 411 , and the aforementioned clamping groove 46 is formed between the two recessed portions 45 .

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

[0062] The first fastener and the second fastener 407 may be screws or bolts, or may be in other forms.

[0063] like Fig. 9 and Fig.10As shown, the main beam 20 includes two side panels 202 arranged at intervals along the left and right directions of the vehicle, the left and right side edges of the bottom plate 201 are connected to the side panels 202 on the corresponding sides, and the reinforcement includes a mounting plate 403 fixedly connected to the inner wall surface of at least one side panel 202, and the mounting plate 403 is connected to the first reinforcement plate 401. Exemplarily, there may be one, two, or even more than two 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, and improves the strength and rigidity of the longitudinal beam in the y direction. The reinforcement designed in this way improves the overall strength and rigidity of the longitudinal beam, and further ensures the torsional rigidity of the seat frame crossbeam 8.

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

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

[0066] The above-mentioned fixed connection can be fixed by welding or fixed by a connector or a combination of the two, or other fixing methods. In this embodiment, it is mainly fixed by welding, and this application will not be described in detail.

[0067] like Figure 1 to Figure 4 As shown, the vehicle body structure further includes a cross beam 12 on the rear floor, and both longitudinal beams extend along the front-rear direction of the vehicle. The longitudinal beam on the left is defined as the left longitudinal beam 21, and the longitudinal beam on the right is defined as the right longitudinal beam 22. The cross beam 12 on the rear floor is located above the rear floor panel 11 and extends along the left-right direction of the vehicle. The seat frame cross beam 8 is located behind the cross beam 12 on the rear floor, and the seat frame cross beam 8 is connected with the left longitudinal beam 21, the cross beam 12 on the rear floor, and the right longitudinal beam 22 in sequence to form a first annular structure 100. In other words, the left and right ends of the seat frame cross beam 8 and the cross beam 12 on the rear floor are respectively connected with the left longitudinal beam 21 and the right longitudinal beam 22. With such a design, the first annular structure 100 is formed.

[0068] It can be understood that the first annular structure 100 is connected to the rear floor crossbeam 12 through the seat frame crossbeam 8. On the one hand, it increases the overall rigidity of the vehicle body structure and reduces the deformation of the vehicle body when a collision occurs. On the other hand, it further disperses the collision impact force, which can further improve the collision force transmission effect at the rear of the vehicle body and enhance collision safety.

[0069] like Figure 2 As shown, the vehicle body structure further 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 the floor crossbeam 13 is sequentially connected with the left longitudinal beam 21, the seat frame crossbeam 8 and the right longitudinal beam 22 to form a second annular structure 101. In other words, the left and right ends of the floor crossbeam 13 are respectively connected with the left longitudinal beam 21 and the right longitudinal beam 22, and the left and right ends of the seat frame crossbeam 8 are respectively connected with the left longitudinal beam 21 and the right longitudinal beam 22, so that the second annular structure 101 is formed.

[0070] It can be understood that the seat frame crossbeam 8 and the floor crossbeam 13 are connected to the left longitudinal beam 21 and the right longitudinal beam 22, which can support the left longitudinal beam 21 and the right longitudinal beam 22 in the y direction, improve the torsional rigidity of the left longitudinal beam 21 and the right longitudinal beam 22 in the y direction; and improve the rigidity of the body structure. In addition, the existence of the second annular structure 101 can further disperse and transmit the collision impact force, further improve the collision force transmission effect of the rear part of the body, and improve the collision safety.

[0071] The above-mentioned vehicle body structure also includes a rear panel 9 located behind the floor cross beam 13, and the rear panel 9 is arranged along the left-right direction of the vehicle, and the left and right ends of the rear panel 9 are respectively connected to the left longitudinal beam 21 and the right longitudinal beam 22, so that the rear panel 9 is connected to the left longitudinal beam 21, the floor cross beam 13 and the right longitudinal beam 22 in sequence to form a third annular structure 900; and / or, the rear panel 9 is connected to the left longitudinal beam 21, the seat frame cross beam 8 and the right longitudinal beam 22 in sequence to form a fourth annular structure 901.

[0072] It can be understood that the existence of the third annular structure 900 and / or the fourth annular structure 901 improves the rigidity of the vehicle body structure, can disperse and transmit the rear collision impact force, can further improve the collision force transmission effect of the rear of the vehicle body, and can enhance collision safety.

[0073] The existence of the first to fourth annular structures improves the overall rigidity of the vehicle body structure and forms multiple collision force transmission paths. The collision force input from the rear panel is dispersed and transmitted along the multiple annular structures to reach the rear seat area. In other words, the impact force can be transmitted forward. For details of the force transmission path, see Figure 3The direction indicated by the arrow.

[0074] The present application also discloses a vehicle, comprising the above-mentioned vehicle body structure.

[0075] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described 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 above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the scope of patent protection of the present application shall be subject to the attached claims.

Claims

1. A vehicle body structure, comprising a floor panel (11), a longitudinal beam extending along the front-rear direction of the vehicle, and a seat frame cross beam (8) extending along the left-right direction of the vehicle, wherein the seat frame cross beam (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 body beam (20), and a chamber (200) is formed by at least the main body beam (20), characterized in that: The chamber (200) is provided with a reinforcement member connected to the inner wall plate of the main beam (20), the reinforcement member includes a first reinforcement plate (401) at least partially arranged side by side with the floor panel (11), a cavity (204) is formed between the bottom plate (201) of the main beam (20) and at least the first reinforcement plate (401), the first reinforcement plate (401) and the floor panel (11) are provided with corresponding first mounting holes (404) constrained by a first fastener, and the seat frame crossbeam (8) is connected to the first reinforcement plate (401) via the first fastener.

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

3. The vehicle body structure according to claim 1, characterized in that: The reinforcement member also includes a second reinforcement plate (402) located below the first reinforcement plate (401) and a connecting plate connecting the first reinforcement plate (401) and the second reinforcement plate (402), and at least a portion of the second reinforcement 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 reinforcement members, which are arranged in sequence along the length direction of the longitudinal beam. The two reinforcement members are defined as a first reinforcement member (41) and a second reinforcement member (42). The main structure of the first reinforcement member (41) and the main structure of the second reinforcement member (42) have the same longitudinal cross-sectional shape; or, the main structure of one of the first reinforcement member (41) and the second reinforcement member (42) has a C-shaped longitudinal cross-sectional shape, and the main structure of the other has a Z-shaped longitudinal cross-sectional shape.

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

7. The vehicle body structure according to claim 3, characterized in that: There are two reinforcing members, which are arranged in sequence along the length direction of the longitudinal beam; a reinforcing frame (43) is provided between the two reinforcing members; a cavity (400) is enclosed between the reinforcing frame (43) and the bottom plate (201) of the main beam (20); and 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 reinforcements are defined as a first reinforcement (41) and a second reinforcement (42) respectively, the connecting plate of the first reinforcement (41) is defined as a first connecting plate (411), the reinforcement frame (43) includes a third reinforcement plate (431) arranged 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) via a second fastener (407), a first through hole (2011) is provided on the bottom plate (201) of the main beam (20) for part of the second fastener (407) to pass through, the part of the second fastener (407) passing through the first through hole (2011) is defined as an upper part, and the upper part is located between the first connecting plate (411) and the third reinforcement plate (431).

9. The vehicle body structure according to claim 8, characterized in that: 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.

10. The vehicle body structure according to claim 9, characterized in that: The positions of the third reinforcing plate (431) located on the left and right sides of the clamping groove (46) are fixedly connected to the corresponding positions of the first connecting plate (411); or, At least one of the third reinforcing plate (431) and the first connecting plate (411) is partially recessed in a direction away from the other to form a recessed portion (45), and the clamping groove (46) is formed between the recessed portion (45) and a 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 arranged at intervals along the left-right direction of the vehicle, and each longitudinal beam corresponds to at least one reinforcing member. The left and right ends of the seat frame cross beam (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 body beam (20) comprises two side panels (202) arranged at intervals along the left-right direction of the vehicle, the left and right side edges of the bottom plate (201) are connected to the side panels (202) on the corresponding sides, and the reinforcement comprises a mounting plate (403) fixedly connected to the inner wall surface of at least one of the side panels (202), and the mounting plate (403) is connected to the first reinforcement plate (401).

13. A vehicle, comprising a vehicle 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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