Vehicle body structure and vehicle

Abstract

The utility model relates to a vehicle body structure and a vehicle, the vehicle body structure is provided with a cavity group, and any three cavities in the cavity group are communicated; the at least three cavities in the cavity group in the vehicle body structure are communicated with one another, so that the torsional rigidity of the vehicle body structure is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, in particular to a vehicle body structure and a vehicle. BACKGROUND

[0002] The torsional stiffness of a vehicle body is crucial for a vehicle. A vehicle body with high torsional stiffness can better maintain the integrity of the vehicle cabin and reduce the risk of injury to the occupants in a collision. In an emergency maneuver or in a dangerous situation, good torsional stiffness helps to avoid uncontrolled rollover or loss of control of the vehicle. However, the existing vehicle body structure has the problem of insufficient torsional stiffness. SUMMARY

[0003] The embodiments of the present application provide a vehicle body structure and a vehicle to improve the torsional stiffness of the vehicle body structure and at least partially solve the above technical problems.

[0004] To achieve the above-mentioned purpose, according to a first aspect of the present application, a vehicle body structure is provided, the rear wall assembly, the side wall assembly and the roof assembly of the vehicle body structure are mutually overlapped to form a cavity group, the cavity group includes a plurality of cavities, and any three cavities are communicated.

[0005] Optionally, the cavity group includes a first cavity, and the first cavity is formed in the rear wall assembly.

[0006] Optionally, the rear wall assembly includes a rear wall upper front cross beam and a rear wall upper rear cross beam, and the rear wall upper front cross beam and the rear wall upper rear cross beam surround to form the first cavity.

[0007] Optionally, the cavity group includes a second cavity, and the second cavity is formed by the rear wall assembly and the side wall assembly.

[0008] Optionally, the rear wall assembly includes a rear wall panel cross beam connecting plate and an upper section of the connecting plate, and the side wall assembly includes a rear wheel cover outer panel; wherein the rear wall panel cross beam connecting plate, the upper section of the connecting plate and the rear wheel cover outer panel surround to form the second cavity.

[0009] Optionally, the cavity group includes a third cavity, and the third cavity is formed in the roof assembly.

[0010] Optionally, the roof assembly includes a roof rear cross beam, a roof reinforcing plate and a roof rear cross beam upper plate, and the roof rear cross beam, the roof reinforcing plate and the roof rear cross beam upper plate surround to form the third cavity.

[0011] Optionally, the cavity group includes a fourth cavity, and the fourth cavity is formed in the side wall assembly.

[0012] Optionally, the side wall assembly includes a front connecting plate in the middle of the side wall, a rear connecting plate at the upper part of the side wall, and an inner panel of the rear wheel housing; wherein, the front connecting plate in the middle of the side wall, the rear connecting plate at the upper part of the side wall, and the inner panel of the rear wheel housing surround to form the fourth cavity.

[0013] Optionally, the cavity group includes a fifth cavity, and the fifth cavity is formed within the rear wall assembly.

[0014] Optionally, the rear wall assembly includes a front lower cross member of the rear wall and a rear lower cross member of the rear wall, and the front lower cross member of the rear wall and the rear lower cross member of the rear wall surround to form the fifth cavity.

[0015] Optionally, the vehicle body structure further includes a sixth cavity, and the sixth cavity is formed within the floor assembly.

[0016] Optionally, a floor assembly is further included, and the floor assembly includes a cab floor, a rear vehicle body structure floor, and a front cross member of the vehicle body structure floor, and the front cross member of the vehicle body structure floor and the cab floor and the rear vehicle body structure floor surround to form the sixth cavity.

[0017] Optionally, the cavity group is annular.

[0018] Optionally, the cavity group includes a first cavity group and at least one second cavity group, and the first cavity group and at least one of the second cavity groups are independently arranged.

[0019] Optionally, the cavity group includes a first cavity group, and the first cavity group is annular.

[0020] Optionally, the first cavity group includes a first annular cavity and a second annular cavity that are interconnected.

[0021] Optionally, the first annular cavity and the second annular cavity are each in a "square" shape, and the first cavity group is in a "day" shape.

[0022] Optionally, the first annular cavity and the second annular cavity are arranged in the height direction of the vehicle body structure.

[0023] Optionally, the first cavity group includes a first annular cavity, and the first annular cavity includes opposite first and third cavities, and two opposite second cavities; wherein, both ends of the first cavity are respectively connected to both ends of the third cavity through the second cavities.

[0024] Optionally, the first cavity group includes a second annular cavity, and the second annular cavity includes opposite first and fifth cavities, and two relatively arranged fourth cavities; wherein, both ends of the first cavity are respectively connected to both ends of the fifth cavity through the fourth cavities.

[0025] Optionally, the cavity set includes a seventh cavity formed in the side wall assembly.

[0026] Optionally, the side wall assembly includes a C-pillar assembly and a rear wheelhouse outer panel, the C-pillar assembly and the rear wheelhouse outer panel surrounding to form the seventh cavity.

[0027] Optionally, the cavity set includes an eighth cavity formed in the side wall assembly.

[0028] Optionally, the side wall assembly includes a wheelhouse inner panel reinforcement and a shock absorber seat panel, the wheelhouse inner panel reinforcement and the shock absorber seat panel surrounding to form the eighth cavity.

[0029] Optionally, the cavity set includes a ninth cavity formed in the side wall assembly.

[0030] Optionally, the side wall assembly includes a body structure left rear upright inner panel and a body structure rear upright reinforcement panel, the body structure left rear upright inner panel and the body structure rear upright reinforcement panel surrounding to form the ninth cavity.

[0031] Optionally, the cavity set includes a tenth cavity formed in the side wall assembly.

[0032] Optionally, the side wall assembly includes a body structure front cross beam, a body structure rear cross beam and a rear wheelhouse inner panel, the body structure front cross beam, the body structure rear cross beam and the rear wheelhouse inner panel surrounding to form the tenth cavity.

[0033] Optionally, the cavity set includes an eleventh cavity formed in a floor assembly.

[0034] Optionally, the floor assembly includes a rear body structure floor and a rear longitudinal beam assembly, the rear body structure floor and the rear longitudinal beam assembly surrounding to form the eleventh cavity.

[0035] Optionally, the cavity set includes at least one second cavity set, each of the second cavity sets being annular.

[0036] Optionally, there are two side wall assemblies, each of the side wall assemblies being provided with a corresponding second cavity set.

[0037] Optionally, the second cavity set is in the shape of a "sun" character.

[0038] Optionally, the second cavity set includes a plurality of communicating cavities in communication with each other, wherein the plurality of communicating cavities are oppositely arranged in the length direction of the body structure.

[0039] Optionally, the rear wall assembly comprises a rear wall upper rear cross beam, the side wall assembly comprises a side wall upper rear connecting plate, and an overlapping area is formed between the rear wall upper rear cross beam and the side wall upper rear connecting plate, and the rear wall upper rear cross beam and the side wall upper rear connecting plate are welded in the overlapping area.

[0040] Optionally, the rear wall assembly comprises a rear wall upper front cross beam, the side wall assembly comprises a side wall upper front connecting plate, and the rear wall upper front cross beam is welded with the side wall upper front connecting plate; wherein a welding via hole is formed on the side wall upper front connecting plate, and the welding via hole is arranged corresponding to the overlapping area.

[0041] Optionally, the side wall assembly comprises at least one side wall joint, and the side wall joint is provided with a V-shaped connecting structure at the lap joint; the rear wall assembly is provided with a V-shaped matching structure; wherein the V-shaped connecting structure and the V-shaped matching structure are matched to enable the side wall joint to be inserted into the rear wall assembly.

[0042] According to the second aspect of the present application, a vehicle is also provided, comprising the vehicle body structure according to any one of the above embodiments.

[0043] In the vehicle body structure of the embodiments of the present application, the cavity group is arranged in the vehicle body structure, and at least three cavities in the cavity group are communicated with each other, so as to improve the torsional stiffness of the vehicle body structure, and the problem of insufficient torsional stiffness of the existing vehicle body structure is solved.

[0044] Other features and advantages of the present application will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0045] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0046] In order to more completely understand the present application and its beneficial effects, the following will be described in conjunction with the drawings, wherein the same reference numerals in the following description represent the same parts.

[0047] Figure 1 is a schematic view of the overall structure of the vehicle body structure provided in the exemplary embodiments of the present disclosure;

[0048] Figure 2 is a front view of the rear wall assembly in the vehicle body structure provided in the exemplary embodiments of the present disclosure;

[0049] Figure 3is a rear view of a rear quarter assembly of a vehicle body structure provided in an exemplary embodiment of the present disclosure;

[0050] Figure 4 is a cross-sectional view of a vehicle body structure at A-A section provided in an exemplary embodiment of the present disclosure; Figure 1

[0051] Figure 5 is a cross-sectional view of a vehicle body structure at B-B section provided in an exemplary embodiment of the present disclosure; Figure 1

[0052] Figure 6 is a cross-sectional view of a vehicle body structure at C-C section provided in an exemplary embodiment of the present disclosure; Figure 1

[0053] Figure 7 is a cross-sectional view of a vehicle body structure at D-D section provided in an exemplary embodiment of the present disclosure; Figure 1

[0054] Figure 8 is a cross-sectional view of a vehicle body structure at E-E section provided in an exemplary embodiment of the present disclosure; Figure 1

[0055] Figure 9 is a cross-sectional view of a vehicle body structure at F-F section provided in an exemplary embodiment of the present disclosure; Figure 1

[0056] Figure 10 is a structural view of a vehicle body structure at a lower front side wall panel and a lower rear side wall panel provided in an exemplary embodiment of the present disclosure;

[0057] Figure 11 is a cross-sectional view of a vehicle body structure at G-G section provided in an exemplary embodiment of the present disclosure;

[0058] Figure 12 is a side view of a side wall panel framework of a side wall assembly of a vehicle body structure provided in an exemplary embodiment of the present disclosure;

[0059] Figure 13 is an isometric view of a side wall panel framework of a side wall assembly of a vehicle body structure provided in an exemplary embodiment of the present disclosure;

[0060] Figure 14 is a cross-sectional view of a vehicle body structure at H-H section provided in an exemplary embodiment of the present disclosure;

[0061] Figure 15 is a cross-sectional view of a vehicle body structure at L-L section provided in an exemplary embodiment of the present disclosure. ​​​​​​

[0062] Reference signs:

[0063] 1. Body structure;

[0064] 2. Cavity group; 21, first cavity; 22, second cavity; 23, first annular cavity; 24, second annular cavity; 201, first cavity; 202, second cavity; 203, third cavity; 204, fourth cavity; 205, fifth cavity; 206, sixth cavity; 207, seventh cavity; 208, eighth cavity; 209, ninth cavity; 210, tenth cavity; 211, eleventh cavity;

[0065] 3. Rear quarter assembly; 31, upper front beam of rear quarter; 32, upper rear beam of rear quarter; 33, rear quarter panel beam connecting plate; 34, upper section of connecting plate; 35, lower front beam of rear quarter; 36, lower rear beam of rear quarter; 37, panel body;

[0066] 4. Side wall assembly; 41, middle front connecting plate of side wall; 42, upper rear connecting plate of side wall; 43, inner panel of rear wheel cover; 44, C column assembly; 45, outer panel of rear wheel cover; 46, inner panel reinforcing plate of wheel cover; 47, shock absorber seat plate; 48, inner panel of left rear stand column of body structure; 49, reinforcing plate of rear stand column of body structure; 71, front beam of body structure; 72, rear beam of body structure; 73, lower front connecting plate of side wall; 74, lower rear connecting plate of side wall; 75, upper front connecting plate of side wall;

[0067] 5. Roof assembly; 51, rear beam of roof; 52, reinforcing plate of roof; 53, upper plate of rear beam of roof;

[0068] 6. Floor assembly; 61, floor of driver's cabin; 62, floor of rear body structure; 63, front beam of floor of body structure; 64, rear longitudinal beam assembly;

[0069] 7. Upper rear quarter assembly; 8, lower rear quarter assembly; 9, welding through hole; 10, side wall joint; 11, V-shaped connecting structure; 12, notch; 13, V-shaped matching structure. DETAILED DESCRIPTION

[0070] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0071] According to the first aspect of the present application, please refer to Figure 1 、 Figure 2 、 Figure 3The rear wall assembly 3, the side wall assembly 4 and the roof assembly 5 of the vehicle body structure provided by the present disclosure are connected to each other to form a cavity group 2, which includes a plurality of cavities, and any three of the cavities are connected to each other.

[0072] In the embodiment, the cavity group 2 is arranged in the vehicle body structure 1, and at least three cavities in the cavity group 2 are connected to each other, so as to improve the torsional stiffness of the vehicle body structure 1 and solve the problem of insufficient torsional stiffness of the existing vehicle body structure.

[0073] In an embodiment, referring to Figure 5 , the vehicle body structure 1 includes the rear wall assembly 3, and the rear wall assembly 3 has the first cavity 201.

[0074] It can be understood that the first cavity 201 is formed by the rear wall assembly 3, and the first cavity 201 is used to improve the torsional stiffness of the vehicle body structure 1.

[0075] In an embodiment, the rear wall assembly 3 includes a rear wall upper front cross beam 31 and a rear wall upper rear cross beam 32, and the rear wall upper front cross beam 31 and the rear wall upper rear cross beam 32 surround to form the first cavity 201.

[0076] It can be understood that the rear wall upper front cross beam 31 and the rear wall upper rear cross beam 32 surround to form the first cavity 201, and the first cavity 201 is used to improve the torsional stiffness of the vehicle body structure 1.

[0077] In an embodiment, referring to Figure 7 , the vehicle body structure 1 further includes a side wall assembly 4, the rear wall assembly 3 includes a rear wall panel cross beam connecting plate 33 and an upper connecting plate section 34, and the side wall assembly 4 includes a rear wheel cover outer panel 45; wherein the rear wall panel cross beam connecting plate 33, the upper connecting plate section 34 and the rear wheel cover outer panel 45 surround to form the second cavity 202.

[0078] It can be understood that the rear wall panel cross beam connecting plate 33, the upper connecting plate section 34 and the rear wheel cover outer panel 45 surround to form the second cavity 202, and the second cavity 202 is used to improve the torsional stiffness of the vehicle body structure 1.

[0079] In an embodiment, the vehicle body structure 1 includes a roof assembly 5, and the roof assembly 5 has the third cavity 203.

[0080] In an embodiment, referring to Figure 4 , the roof assembly 5 includes a roof rear cross beam 51, a roof reinforcing plate 52 and a roof rear cross beam upper plate 53, and the roof rear cross beam 51, the roof reinforcing plate 52 and the roof rear cross beam upper plate 53 surround to form the third cavity 203.

[0081] It can be understood that the roof rear cross beam 51, the roof reinforcing plate 52, and the roof rear cross beam upper plate 53 in the roof assembly 5 surround to form a third cavity 203, and the third cavity 203 is used to improve the torsional stiffness of the vehicle body structure 1.

[0082] It should be noted that the third cavity 203 is in communication with the first cavity 201 and the second cavity 202, so that the cavities of the roof assembly 5 are in communication with the cavities of the rear wall assembly 3, further improving the torsional stiffness of the vehicle body structure 1.

[0083] In an embodiment, referring to Figure 8 , the vehicle body structure 1 comprises two side wall assemblies 4, and each of the side wall assemblies 4 has a corresponding fourth cavity 204.

[0084] It can be understood that the fourth cavity 204 improves the torsional stiffness of the vehicle body structure 1.

[0085] In an embodiment, the side wall assembly 4 comprises a side wall middle part front connecting plate 41, a side wall upper part rear connecting plate 42, and a rear wheel cover inner plate 43; wherein the side wall middle part front connecting plate 41, the side wall upper part rear connecting plate 42, and the rear wheel cover inner plate 43 surround to form the fourth cavity 204.

[0086] It can be understood that the fourth cavity 204 is formed in the side wall assembly 4, and the torsional stiffness of the vehicle body structure 1 is improved through the fourth cavity 204.

[0087] In an embodiment, referring to Figure 6 , Figure 8 , Figure 9 , the vehicle body structure 1 comprises a rear wall assembly 3, the rear wall assembly 3 has a fifth cavity 205, and the rear wall assembly 3 comprises a rear wall lower front cross beam 35 and a rear wall lower rear cross beam 36, and the rear wall lower front cross beam 35 and the rear wall lower rear cross beam 36 surround to form the fifth cavity 205.

[0088] It can be understood that the fifth cavity 205 improves the torsional stiffness of the vehicle body structure 1.

[0089] In an embodiment, the vehicle body structure 1 further comprises a floor assembly 6, the floor assembly 6 comprises a driver's cabin floor 61, a rear vehicle body structure floor 62, and a vehicle body structure floor front cross beam 63, and the vehicle body structure floor front cross beam 63 surrounds the driver's cabin floor 61 and the rear vehicle body structure floor 62 to form the sixth cavity 206.

[0090] It can be understood that the sixth cavity 206 improves the torsional stiffness of the vehicle body structure 1.

[0091] In an embodiment, the vehicle body structure 1 has a cavity group 2, and the cavity group 2 is annular.

[0092] The cavity group 2 comprises a plurality of cavities arranged in a ring shape.

[0093] It can be understood that the torsional stiffness of the vehicle body structure in the height direction is improved by arranging the cavity group 2 in a ring shape.

[0094] In an embodiment, the cavity group 2 comprises a first cavity group 21 and at least one second cavity group 22, and the first cavity group 21 and the at least one second cavity group 22 are arranged independently.

[0095] It can be understood that the first cavity group 21 and the at least one second cavity group 22 can both improve the torsional stiffness of the vehicle body structure.

[0096] In an embodiment, the cavity group 2 comprises a first cavity group 21, and the first cavity group 21 is arranged in a ring shape.

[0097] It can be understood that the torsional stiffness of the vehicle body structure in the height direction is improved by arranging the first cavity group 21 in a ring shape.

[0098] In an embodiment, the first cavity group 21 forms a "day" shape.

[0099] The first cavity group 21 is in a "day" shape, which is conducive to further improving the torsional stiffness of the vehicle body structure.

[0100] In an embodiment, referring to Figure 9 , the first cavity group 21 comprises a first ring-shaped cavity 23 and a second ring-shaped cavity 24 that are in communication with each other.

[0101] It can be understood that the first ring-shaped cavity 23 and the second ring-shaped cavity 24 are in communication to form the first cavity group 21, and the first ring-shaped cavity 23 and the second ring-shaped cavity 24 improve the torsional stiffness of the vehicle body structure.

[0102] In an embodiment, referring to Figure 9 , the first ring-shaped cavity 23 and the second ring-shaped cavity 24 are arranged in the height direction of the vehicle body structure 1.

[0103] It can be understood that the first ring-shaped cavity 23 and the second ring-shaped cavity 24 are arranged in the height direction and in communication with each other, thereby improving the torsional stiffness of the vehicle body structure in the height direction.

[0104] In an embodiment, the first cavity group 21 comprises a first ring-shaped cavity 23.

[0105] It can be understood that the first ring-shaped cavity 23 is used to improve the torsional stiffness of the vehicle body structure.

[0106] In an embodiment, referring to Figure 9 , the first annular cavity 23 comprises opposite first cavities 201 and third cavities 203, and two opposite second cavities 202; wherein the two ends of the first cavities 201 are communicated with the two ends of the third cavities 203 through the second cavities 202 respectively.

[0107] It can be understood that the first cavities 201, the second cavities 202 and the third cavities 203 are communicated with each other, thereby further improving the torsional stiffness of the pickup truck.

[0108] In an embodiment, the first cavity group 21 comprises a second annular cavity 24.

[0109] It can be understood that the second annular cavity 24 improves the torsional stiffness of the vehicle body structure 1.

[0110] In an embodiment, referring to Figure 6 , Figure 8 , Figure 9 , the second annular cavity 24 comprises opposite first cavities 201 and fifth cavities 205, and two opposite fourth cavities 204; wherein the two ends of the first cavities 201 are communicated with the two ends of the fifth cavities 205 through the fourth cavities 204 respectively.

[0111] It can be understood that the first cavities 201, the fourth cavities 204 and the fifth cavities 205 are communicated with each other, thereby making the second annular cavity 24 better improve the torsional stiffness of the vehicle body structure 1.

[0112] In an embodiment, the cavity group 2 comprises at least one second cavity group 22, and each second cavity group 22 is annular.

[0113] Wherein, referring to Figure 12 and Figure 13 , the second cavity group 22 is located in the side panel framework in the side wall assembly 4.

[0114] It can be understood that the second cavity group 22 is annular to improve the torsional stiffness of the vehicle body structure 1.

[0115] In an embodiment, the vehicle body structure 1 comprises at least one side wall assembly 4, and each side wall assembly 4 is provided with a corresponding second cavity group 22.

[0116] It can be understood that the side wall assembly 4 comprises the second cavity group 22, and the second cavity group 22 improves the torsional stiffness of the side wall assembly 4.

[0117] In an embodiment, referring to Figure 14 and Figure 15The second cavity group 22 is in the shape of a "sun".

[0118] It can be understood that the second cavity group 22 is in the shape of a "sun", which further improves the torsional stiffness of the side wall assembly 4.

[0119] In an embodiment, the second cavity group 22 comprises a plurality of communicating cavities which are in communication with each other, wherein the plurality of communicating cavities are oppositely arranged in the length direction of the vehicle body structure 1.

[0120] It can be understood that the plurality of communicating cavities in the second cavity group 22 are in communication with each other and oppositely arranged in the length direction of the vehicle body structure 1, thereby further improving the torsional stiffness of the side wall assembly 4 in the length direction, and greatly reducing the structural redundancy.

[0121] In an embodiment, referring to Figure 14 the side wall assembly 4 further comprises a C-pillar assembly 44 and a rear wheelhouse outer panel 45, and the plurality of communicating cavities comprises a seventh cavity 207, and the C-pillar assembly 44 and the rear wheelhouse outer panel 45 surround the seventh cavity 207.

[0122] It can be understood that the seventh cavity 207 located in the side wall assembly 4 is used to improve the torsional stiffness of the side wall assembly 4.

[0123] In an embodiment, referring to Figure 14 the side wall assembly 4 further comprises a wheelhouse inner panel reinforcement 46 and a shock absorber seat plate 47, and the plurality of communicating cavities comprises an eighth cavity 208, and the wheelhouse inner panel reinforcement 46 and the shock absorber seat plate 47 surround the eighth cavity 208.

[0124] It can be understood that the eighth cavity 208 located in the side wall assembly 4 is used to improve the torsional stiffness of the side wall assembly 4.

[0125] In an embodiment, referring to Figure 14 the side wall assembly 4 further comprises a vehicle body structure left rear upright inner panel 48 and a vehicle body structure rear upright reinforcement 49, and the plurality of communicating cavities comprises a ninth cavity 209, and the vehicle body structure left rear upright inner panel 48 and the vehicle body structure rear upright reinforcement 49 surround the ninth cavity 209.

[0126] It can be understood that the ninth cavity 209 located in the side wall assembly 4 is used to improve the torsional stiffness of the side wall assembly 4.

[0127] In an embodiment, referring to Figure 15Further comprising a side wall assembly 4, the side wall assembly 4 comprising a front body structure cross beam 71, a rear body structure cross beam 72 and a rear wheel cover inner plate 43, the plurality of communication cavities comprising a tenth cavity 210, the front body structure cross beam 71, the rear body structure cross beam 72 and the rear wheel cover inner plate 43 surrounding to form the tenth cavity 210.

[0128] It can be understood that the tenth cavity 210 located in the side wall assembly 4 is used to improve the torsional stiffness of the side wall assembly 4.

[0129] In an embodiment, referring to Figure 15 Further comprising a floor assembly 6, the floor assembly 6 comprising a rear body structure floor 62 and a rear longitudinal beam assembly 64, the plurality of communication cavities comprising an eleventh cavity 211, the rear body structure floor 62 and the rear longitudinal beam assembly 64 surrounding to form the eleventh cavity 211.

[0130] It can be understood that the eleventh cavity 211 located in the floor assembly 6 is used to improve the torsional stiffness of the floor assembly 6 and the body structure.

[0131] In an embodiment, further comprising a rear wall assembly 3, the rear wall assembly 3 comprising a rear wall upper rear cross beam 32, the side wall assembly 4 comprising a side wall upper rear connecting plate 42, an overlapping area being formed between the rear wall upper rear cross beam 32 and the side wall upper rear connecting plate 42, and the rear wall upper rear cross beam 32 and the side wall upper rear connecting plate 42 being welded in the overlapping area.

[0132] It can be understood that the overlapping area is formed between the rear wall upper rear cross beam 32 and the side wall upper rear connecting plate 42, and the rear wall upper rear cross beam 32 and the side wall upper rear connecting plate 42 are fixedly connected by welding in the overlapping area, so as to improve the torsional stiffness of the body structure 1.

[0133] In an embodiment, referring to Figure 11 The rear wall assembly 3 comprises a rear wall upper front cross beam 31, the side wall assembly 4 comprises a side wall upper front connecting plate 75, and the rear wall upper front cross beam 31 and the side wall upper front connecting plate 75 are welded; wherein a welding through hole 9 is formed on the side wall upper front connecting plate 75, and the welding through hole 9 is arranged corresponding to the overlapping area.

[0134] It can be understood that the welding through hole 9 corresponds to the overlapping area to realize the spot welding process of the overlapping area; compared with the prior art which can only perform carbon dioxide shield welding from one side, the embodiment performs spot welding process on the overlapping area from both sides of the overlapping area through the welding through hole 9, and the sealing effect of the embodiment is better.

[0135] In an embodiment, referring to Figure 10Further comprising a side wall assembly 4, the side wall assembly 4 comprising a side wall lower front connecting plate 73, the side wall lower front connecting plate 73 being formed with a notch 12 at an edge of the side wall lower front connecting plate 73, the notch 12 being used for filling sealant to a welding position of the side wall assembly 4 and the floor assembly 6.

[0136] It can be understood that the notch 12 formed at the edge of the side wall lower front connecting plate 73 is used for filling sealant to the welding position of the side wall assembly 4 and the floor assembly 6, the sealant is used to enhance the sealing performance of the connection position of the side wall assembly 4 and the floor assembly 6, to isolate the inside and outside of the cab, to realize normal sealant filling of the welding position of the side wall assembly 4 and the floor assembly 6 without affecting the external sealing, and to reduce the risk of rust in the cavity of the side wall assembly 4 and the floor assembly 6.

[0137] In an embodiment, the sealant is located on the inner side of the side wall assembly 4, and the sealant covers at least the welding position of the side wall assembly 4 and the floor assembly 6.

[0138] It can be understood that the sealant covers at least the welding position of the side wall assembly 4 and the floor assembly 6 to improve the sealing performance.

[0139] In an embodiment, referring to Figure 11 Further comprising a side wall assembly 4 and a rear wall assembly 3, the side wall assembly 4 comprising at least one side wall joint 10, the side wall joint 10 being provided with a V-shaped connecting structure 11 at the lap joint; the rear wall assembly 3 being provided with a V-shaped matching structure 13; wherein the V-shaped connecting structure 11 and the V-shaped matching structure 13 are matched to enable the side wall joint 10 to be inserted into the rear wall assembly 3.

[0140] It can be understood that the V-shaped connecting structure 11 and the V-shaped matching structure 13 are matched to facilitate the lateral pushing of the side wall assembly 4 to realize installation, thereby reducing the difficulty of the lateral pushing of the side wall assembly 4.

[0141] In an embodiment, further comprising a rear wall assembly 3, the rear wall assembly 3 comprising a panel body 37, a rear wall lower front cross beam 35, and a rear wall lower rear cross beam 36, the panel body 37 being integrally formed with the rear wall lower front cross beam 35 or the rear wall lower rear cross beam 36.

[0142] It can be understood that the panel body 37 is integrally formed with the rear wall lower front cross beam 35 or the rear wall lower rear cross beam 36 to simplify the process and reduce the cost.

[0143] In an embodiment, the thickness of the side wall joint 10 is greater than the thickness of other positions of the side wall assembly 4.

[0144] It can be understood that the stress at the side wall joint 10 is greater, and by setting the thickness at the side wall joint 10 to be thicker, the side wall joint 10 can withstand greater stress.

[0145] In an embodiment, the mounting steps of the vehicle body structure are as follows: first, the rear wall lower assembly 8 is welded with the floor assembly 6, the side wall joint 10 is welded with the rear wall assembly 3 along with the side wall assembly 4, and then the welding is completed in the total assembly process.

[0146] The rear wall lower assembly 8 is composed of a rear wall lower front cross beam 35, a side wall lower front connecting plate 73, a side wall lower rear connecting plate 74, and a rear wall lower rear cross beam 36.

[0147] In the total assembly process, after the rear wall lower assembly 8 is positioned along with the floor assembly 6, the rear wall lower assembly 8 is first pushed into the side wall assembly 4 laterally, and then pushed into the rear wall upper assembly 7 from back to front.

[0148] The rear wall assembly 3 includes the rear wall upper assembly 7 and the rear wall lower assembly 8.

[0149] It can be understood that by reasonably setting the welding sequence, the welding of the roof assembly 5, the rear wall assembly 3, the side wall assembly 4, and the floor assembly 6 is realized without modifying the production line, thereby saving costs.

[0150] According to a second aspect of the present disclosure, a vehicle is provided, which includes the vehicle body structure 1 of any of the above embodiments, and has all the beneficial effects of the vehicle body structure 1 of any of the above embodiments, which will not be repeated here.

[0151] The vehicle can be a fuel vehicle, a plug-in hybrid vehicle, or a new energy vehicle, etc., which is not specifically limited by the present disclosure.

[0152] In the description of the present application, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0153] In the above embodiments, the description of each embodiment is focused on, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0154] The embodiments, implementation manners and related technical features of the present application can be combined, replaced with each other without conflict.

[0155] The above are only the preferred embodiments of the present application, and do not limit the present application in any form, but any simple modification, equivalent change and modification made to the above embodiments without departing from the technical solution of the present application and according to the technical essence of the present application are still within the scope of the technical solution of the present application.

Claims

1. A vehicle body structure characterized by comprising: The rear wall assembly (3), the side wall assembly (4) and the roof assembly (5) of the vehicle body structure are overlapped with each other to form a cavity group (2), the cavity group (2) comprises a plurality of cavities, and any three cavities are communicated.

2. The vehicle body structure (1) according to claim 1, characterized in that, The cavity group (2) comprises a first cavity (201), and the first cavity is formed in the rear wall assembly (3).

3. The vehicle body structure (1) according to claim 2, characterized in that, The rear wall assembly (3) comprises a rear wall upper front cross beam (31) and a rear wall upper rear cross beam (32), and the rear wall upper front cross beam (31) and the rear wall upper rear cross beam (32) surround to form the first cavity (201).

4. The vehicle body structure (1) according to claim 1, characterized in that, The cavity group (2) comprises a second cavity (202), and the second cavity (202) is formed by the rear wall assembly (3) and the side wall assembly (4).

5. The vehicle body structure (1) according to claim 4, characterized in that, The rear wall assembly (3) comprises a rear wall plate cross beam connecting plate (33) and an upper connecting plate (34), and the side wall assembly (4) comprises a rear wheel cover outer plate (45); wherein the rear wall plate cross beam connecting plate (33), the upper connecting plate (34) and the rear wheel cover outer plate (45) surround to form the second cavity (202).

6. The vehicle body structure (1) according to claim 1, characterized in that, The cavity group (2) comprises a third cavity (203), and the third cavity (203) is formed in the roof assembly (5).

7. The vehicle body structure (1) according to claim 6, characterized in that The roof assembly (5) comprises a roof rear cross beam, a roof reinforcing plate and a roof rear cross beam upper plate, and the roof rear cross beam, the roof reinforcing plate and the roof rear cross beam upper plate surround to form the third cavity (203).

8. The vehicle body structure (1) according to claim 1, characterized in that, The cavity group (2) comprises a fourth cavity (204), and the fourth cavity (204) is formed in the side wall assembly (4).

9. The vehicle body structure (1) according to claim 8, characterized in that The side wall assembly (4) comprises a side wall middle part front connecting plate (41), a side wall upper part rear connecting plate (42) and a rear wheel cover inner plate (43); wherein the side wall middle part front connecting plate (41), the side wall upper part rear connecting plate (42) and the rear wheel cover inner plate (43) surround to form the fourth cavity (204).

10. The vehicle body structure (1) according to claim 1, characterized in that, The cavity group (2) comprises a fifth cavity (205), and the fifth cavity (205) is formed in the rear wall assembly (3).

11. The vehicle body structure (1) according to claim 10, characterized in that The rear wall assembly (3) comprises a rear wall lower front cross beam (35) and a rear wall lower rear cross beam (36), and the rear wall lower front cross beam (35) and the rear wall lower rear cross beam (36) surround to form the fifth cavity (205).

12. The vehicle body structure (1) according to claim 1, characterized in that, The vehicle body structure (1) further comprises a floor assembly (6), and the vehicle body structure (1) further comprises a sixth cavity (206), and the sixth cavity (206) is formed in the floor assembly (6).

13. The vehicle body structure (1) according to claim 12, characterized in that The floor assembly (6) comprises a driver's cabin floor, a rear vehicle body structure floor and a vehicle body structure floor front cross beam (63), and the vehicle body structure floor front cross beam (63), the driver's cabin floor and the rear vehicle body structure floor surround to form the sixth cavity (206).

14. The body structure (1) according to claim 1, characterized in that The cavity group (2) is annular.

15. The vehicle body structure (1) according to claim 14, characterized in that The cavity group (2) comprises a first cavity group (21) and at least one second cavity group (22), and the first cavity group (21) and the at least one second cavity group (22) are independently arranged.

16. The vehicle body structure (1) according to claim 15, characterized in that The cavity group (2) comprises a first cavity group (21), and the first cavity group (21) is annular.

17. The vehicle body structure (1) according to claim 16, characterized in that The first cavity group (21) comprises a first annular cavity (23) and a second annular cavity (24) which are in communication with each other.

18. The vehicle body structure (1) according to claim 17, characterized in that The first annular cavity (23) and the second annular cavity (24) are respectively in the shape of a "mouth", and the first cavity group (21) is in the shape of a "sun".

19. The body structure (1) according to claim 18, characterized in that The first annular cavity (23) and the second annular cavity (24) are arranged in the height direction of the vehicle body structure (1).

20. The vehicle body structure (1) according to claim 16, characterized in that The first cavity group (21) comprises a first annular cavity (23) comprising a first cavity (201) and a third cavity (203) which are opposite to each other, and two second cavities (202) which are opposite to each other; wherein the two ends of the first cavity (201) are communicated with the two ends of the third cavity (203) through the second cavities (202).

21. The vehicle body structure (1) according to claim 16, characterized in that, The first cavity group (21) comprises a second annular cavity (24) comprising a first cavity (201) and a fifth cavity (205) which are opposite to each other, and two fourth cavities (204) which are opposite to each other; wherein the two ends of the first cavity (201) are communicated with the two ends of the fifth cavity (205) through the fourth cavities (204).

22. The body structure (1) according to claim 1, characterized in that The cavity group comprises a seventh cavity (207) formed in the side wall assembly (4).

23. The body structure (1) according to claim 22, characterized in that The side wall assembly (4) comprises a C-pillar assembly (44) and a rear wheel cover outer panel (45), and the C-pillar assembly (44) and the rear wheel cover outer panel (45) surround to form the seventh cavity (207).

24. The body structure (1) according to claim 1, characterized in that The cavity group comprises an eighth cavity (208) formed in the side wall assembly (4).

25. The body structure (1) according to claim 24, characterized in that The side wall assembly (4) comprises a wheel cover inner panel reinforcing plate (46) and a shock absorber seat plate (47), and the wheel cover inner panel reinforcing plate (46) and the shock absorber seat plate (47) surround to form the eighth cavity (208).

26. The body structure (1) according to claim 1, characterized in that The cavity group comprises a ninth cavity (209) formed in the side wall assembly (4).

27. The body structure (1) according to claim 26, characterized in that The side wall assembly (4) comprises a vehicle body structure left rear upright inner panel (48) and a vehicle body structure rear upright reinforcing plate (49), and the vehicle body structure left rear upright inner panel (48) and the vehicle body structure rear upright reinforcing plate (49) surround to form the ninth cavity (209).

28. A body structure (1) according to claim 1, characterized in that The cavity group comprises a tenth cavity (210) formed in the side wall assembly (4).

29. The body structure (1) according to claim 28, characterized in that The side wall assembly (4) comprises a vehicle body structure front cross beam (71), a vehicle body structure rear cross beam (72) and a rear wheel cover inner panel (43), and the vehicle body structure front cross beam (71), the vehicle body structure rear cross beam (72) and the rear wheel cover inner panel (43) surround to form the tenth cavity (210).

30. The body structure (1) according to claim 1, characterized in that The cavity group comprises an eleventh cavity (211) formed in the floor assembly (6).

31. The body structure (1) according to claim 30, characterized in that The floor assembly (6) comprises a rear body structure floor and a rear longitudinal beam assembly (64), and the rear body structure floor and the rear longitudinal beam assembly (64) surround to form the eleventh cavity (211).

32. A body structure (1) according to claim 1, characterized in that The cavity group (2) comprises at least one second cavity group (22), and each second cavity group (22) is annular.

33. The body structure (1) according to claim 32, characterized in that The side wall assembly is two, and each side wall assembly (4) is provided with a corresponding second cavity group (22).

34. The body structure (1) according to claim 32, characterized in that The second cavity group (22) is in the shape of a "sun".

35. A body structure (1) according to claim 32, characterized in that The second cavity group (22) comprises a plurality of communication cavities in communication with each other, and a plurality of the communication cavities are oppositely arranged in the length direction of the body structure (1).

36. A body structure (1) according to claim 1, characterized in that The rear wall assembly (3) comprises a rear wall upper rear cross beam (32), and the side wall assembly (4) comprises a side wall upper rear connecting plate (42), and an overlapping area is formed between the rear wall upper rear cross beam (32) and the side wall upper rear connecting plate (42), and the rear wall upper rear cross beam (32) and the side wall upper rear connecting plate (42) are welded in the overlapping area.

37. A body structure (1) according to claim 36, characterized in that The rear wall assembly (3) comprises a rear wall upper front cross beam (31), and the side wall assembly (4) comprises a side wall upper front connecting plate (75), and the rear wall upper front cross beam (31) and the side wall upper front connecting plate (75) are welded; wherein a welding through hole (9) is formed on the side wall upper front connecting plate (75), and the welding through hole (9) is arranged corresponding to the overlapping area.

38. A body structure (1) according to claim 1, characterized in that The side wall assembly (4) comprises at least one side wall joint (10), and the side wall joint (10) is provided with a V-shaped connecting structure (11) at the lap joint; the rear wall assembly (3) is provided with a V-shaped matching structure (13); wherein the V-shaped connecting structure (11) and the V-shaped matching structure (13) are matched to enable the side wall joint (10) to be inserted into the rear wall assembly (3).

39. A vehicle characterized by The body structure (1) comprises any one of claims 1 to 38.

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