Vehicle body

Abstract

A vehicle body comprises a top cover assembly, a bottom assembly and two side wall assemblies. The side wall assembly comprises a side wall outer plate, a side wall connecting upper rib, a side wall connecting lower rib, a side wall middle rib and a plurality of side wall reinforcing ribs, the side wall connecting upper rib, the side wall middle rib and the side wall connecting lower rib are sequentially arranged, the side wall reinforcing ribs are arranged between the side wall connecting upper rib and the side wall middle rib, the side wall reinforcing ribs are connected to the side wall connecting upper rib and the side wall middle rib, and the side wall connecting upper rib is connected with the side wall connecting lower rib. The plurality of side wall reinforcing ribs are arranged between the side wall middle rib and the side wall connecting lower rib, and are connected with the side wall middle rib and the side wall connecting lower rib; the bottom assembly comprises a floor and a plurality of bottom beams, the bottom beams are arranged on the bottom face of the floor, and the two ends of each bottom beam are connected to the two side wall connecting lower ribs correspondingly. The top cover assembly comprises a top cover outer plate and a plurality of top beams, the top beams are arranged on the bottom face of the top cover outer plate, and the two ends of the top beams are connected to the two side wall connecting upper ribs respectively. In conclusion, the strength and rigidity of the vehicle body are high.

Description

Technical Field

[0001] The invention relates to the technical field of automobile structures, in particular to a vehicle body. Background Art

[0002] At present, in the body of a car, a cavity for accommodating passengers and articles is formed between the side panels, the floor and the roof. The above three can provide protection for the passengers and articles in the cavity. Among them, the side panels are structures in which the outer panels and the inner panels form a cavity (such as Figure 1 and Figure 2 ), the components are connected by overlapping plate parts and then welding or riveting. This body structure is light in weight, but has low strength and rigidity. During driving, the body of the car may swing, resulting in unstable driving and a high possibility of damage in the event of an accident. Summary of the invention

[0003] The object of the present invention is to provide a vehicle body structure to solve the technical problem that in the prior art vehicle body, the structure formed by the side panels, floor and roof has low strength and rigidity, resulting in unstable driving and a high possibility of damage in the event of an accident.

[0004] In order to achieve the above object, the present invention provides a vehicle body, comprising a top cover assembly, a bottom assembly and two side enclosure assemblies, wherein the two side enclosure assemblies are arranged opposite to each other and spaced apart in the left-right direction, and the top cover assembly and the bottom assembly are spaced apart between the two side enclosure assemblies from top to bottom;

[0005] The side enclosure component comprises a side enclosure outer plate, a side enclosure connecting upper rib, a side enclosure connecting lower rib, a side enclosure middle rib and a plurality of side enclosure reinforcing ribs, the side enclosure connecting upper rib, the side enclosure middle rib, the side enclosure connecting lower rib and the side enclosure reinforcing rib are arranged on the side of the side enclosure outer plate relative to the other side enclosure component, the side enclosure connecting upper rib, the side enclosure middle rib and the side enclosure connecting lower rib are arranged in sequence from top to bottom, a plurality of the side enclosure reinforcing ribs are arranged in a spaced manner between the side enclosure connecting upper rib and the side enclosure middle rib along the front-to-back direction, the top end and the bottom end of the side enclosure reinforcing rib are respectively connected to the side enclosure connecting upper rib and the side enclosure middle rib, a plurality of the side enclosure reinforcing ribs are arranged in a spaced manner between the side enclosure middle rib and the side enclosure connecting lower rib along the front-to-back direction, the top end and the bottom end of the side enclosure reinforcing rib are respectively connected to the side enclosure middle rib and the side enclosure connecting lower rib;

[0006] The bottom assembly includes a floor and a plurality of bottom beams, wherein the plurality of bottom beams are arranged at intervals on the bottom surface of the floor along the front-rear direction, and the two ends of the bottom beams along the left-right direction are respectively connected to the side enclosure connecting lower ribs of the two side enclosure assemblies;

[0007] The top cover assembly includes a top cover outer plate and a plurality of top beams, wherein the plurality of top beams are arranged at intervals along the front-rear direction on the bottom surface of the top cover outer plate, and the two ends of the top beams along the left-right direction are respectively connected to the side enclosure connecting upper ribs of the two side enclosure assemblies.

[0008] Optionally, the side enclosure center ribs include an arched center rib plate and two overlapping center rib plates, the arched center rib plate arches in a direction away from the side enclosure outer plate, the two overlapping center rib plates are respectively arranged on both sides of the arched center rib plate in a vertical direction and connected to the arched center rib plate, and the overlapping center rib plates are connected to the side enclosure outer plate;

[0009] The side enclosure connecting upper ribs include a first overlapping upper rib plate, a first extended upper rib plate, a second extended upper rib plate, and a second overlapping upper rib plate connected in sequence, the side of the first overlapping upper rib plate is connected to the side enclosure outer plate, the first extended upper rib plate, the second extended upper rib plate and the side enclosure outer plate form a first cavity, the second overlapping upper rib plate, the side enclosure outer plate and the top cover outer plate are overlapped and connected, the first extended upper rib plate is provided with a plurality of liquid leakage through holes at intervals along the front-to-back direction, the side enclosure connecting upper ribs also include a plurality of upper rib reinforcement plates corresponding to the liquid leakage through holes one by one, the upper rib reinforcement plates are provided on the side of the first extended upper rib plate relative to the side enclosure outer plate, and the upper rib reinforcement plates are provided around the corresponding liquid leakage through holes;

[0010] The side enclosure connecting lower ribs include a first vertical lower rib plate, a second vertical lower rib plate and a horizontal lower rib plate, wherein the first vertical lower rib plate is arranged on the bottom surface of the horizontal lower rib plate close to the side enclosure outer plate, the second vertical lower rib plate is arranged on the top surface of the horizontal lower rib plate away from the side enclosure outer plate, and the side surface of the second vertical lower rib plate away from the side enclosure outer plate is connected to the floor;

[0011] The side enclosure reinforcement rib comprises a reinforcement arch plate and two reinforcement lap plates, the reinforcement arch plate is arched in the direction away from the side enclosure outer panel, the reinforcement arch plate and the side enclosure outer panel form a second cavity, the two reinforcement lap plates are respectively arranged on both sides of the reinforcement arch plate along the front-rear direction and are connected to the reinforcement arch plate, the side surfaces of the reinforcement lap plates are connected to the side enclosure outer panel, the reinforcement lap plates are overlapped on the arched middle rib plate and the overlapped middle rib plate, and are connected to the arched middle rib plate and the overlapped middle rib plate, the top surface of the reinforcement lap plate of the side enclosure reinforcement rib located above is connected to the second extended upper rib plate, the second cavity of the side enclosure reinforcement rib is connected to the first cavity, the bottom surface of the side enclosure reinforcement rib located below is connected to the top surface of the horizontal lower rib plate, and the side surfaces of the side enclosure reinforcement rib are connected to the side surfaces of the second vertical lower rib plate close to the side enclosure outer panel.

[0012] Optionally, the overlapped middle rib plate and the side outer panel located at the top are connected by shock-absorbing adhesive, and the overlapped middle rib plate and the side outer panel located at the bottom are connected by welding;

[0013] The side surface of the first overlapping upper rib plate is connected to the side outer panel by a shock-absorbing adhesive, and the second overlapping upper rib plate, the side outer panel and the top cover outer panel are connected by welding;

[0014] The top surface of the horizontal lower rib plate is welded to the bottom surface of the side reinforcement rib located below, and the side surface of the second vertical lower rib plate is welded to the floor;

[0015] The reinforcing lap plate and the side enclosure outer panel are connected by shock-absorbing adhesive, and the reinforcing lap plate is welded to the arched middle rib plate and the overlapping middle rib plate. The top surface of the reinforcing lap plate of the side enclosure reinforcement rib located above is welded to the second extended upper rib plate, and the bottom surface of the side enclosure reinforcement rib located below is welded to the top surface of the horizontal lower rib plate, and the side surface of the side enclosure reinforcement rib is welded to the side surface of the second vertical lower rib plate close to the side enclosure outer panel.

[0016] Optionally, the side enclosure assembly further comprises a wheel housing connecting rib, the wheel housing connecting rib being arranged on a side of the side enclosure outer panel relative to the other side enclosure assembly, the wheel housing connecting rib being located below the side enclosure middle rib, the top end of the wheel housing connecting rib being connected to the side enclosure middle rib, and the wheel housing connecting rib being connected to the side enclosure outer panel relative to the side of the side enclosure outer panel;

[0017] The side enclosure assembly further comprises a side enclosure lap plate, a wheel house notch is provided on the bottom surface of the side enclosure outer plate corresponding to the wheel house connecting rib, the side enclosure lap plate is arranged along the wheel house notch and extends toward the direction of the other side enclosure assembly;

[0018] The vehicle body also includes two wheel cover assemblies corresponding to the side enclosure assemblies one by one, the wheel cover assemblies being arranged corresponding to the wheel cover notches, the wheel cover assembly including a wheel cover inner panel and a wheel cover outer panel, the wheel cover inner panel including a wheel cover inner lap panel and a wheel cover inner extension panel connected in sequence, the wheel cover outer panel including a first wheel cover outer lap panel, a first wheel cover outer extension panel, a second wheel cover outer extension panel and a second wheel cover outer lap panel connected in sequence, the wheel cover inner lap panel, the first wheel cover outer lap panel and the wheel cover connecting ribs overlapping and connected, the wheel cover inner extension panel extending obliquely downward in a direction away from the side enclosure outer panel, the wheel cover inner extension panel being connected to the floor, the first wheel cover outer extension panel extending in a direction close to the side enclosure outer panel, the second wheel cover outer extension panel extending downward, the second wheel cover outer lap panel extending in a direction away from the side enclosure outer panel, and the bottom surface of the second wheel cover outer lap panel being connected to the bottom surface of the side enclosure lap panel.

[0019] Optionally, it also includes multiple threshold assemblies, two of which are respectively arranged on both sides of the wheel cover assembly along the front-to-back direction, the threshold assembly includes a threshold inner panel and a wheel cover connecting plate, the threshold inner panel is arranged on the side of the side panel outer panel facing the other side panel assembly, the threshold inner panel and the side panel outer panel form a third cavity, the wheel cover connecting plate is arranged in the third cavity, the top of the threshold inner panel, the top of the wheel cover connecting plate, the reinforcing arch plate and the floor are overlapped and connected, the top of the threshold inner panel, the top of the wheel cover connecting plate and the bottom of the side panel outer panel are overlapped and connected, one side of the threshold inner panel along the front-to-back direction, one side of the wheel cover connecting plate along the front-to-back direction and the second wheel cover outer extension plate are overlapped and connected.

[0020] Optionally, the side enclosure assembly further comprises a B-pillar enclosure assembly, two side enclosure connecting upper ribs and two side enclosure connecting lower ribs, the B-pillar enclosure assembly is arranged on the side of the side enclosure outer plate relative to the other side enclosure assembly, the two side enclosure connecting upper ribs are respectively arranged on both sides of the top of the B-pillar enclosure assembly along the front-rear direction, and the two side enclosure connecting lower ribs are respectively arranged on both sides of the bottom of the B-pillar enclosure assembly along the front-rear direction;

[0021] The B-pillar panel assembly includes a B-pillar inner panel and a B-pillar reinforcement panel, the B-pillar inner panel and the side panel outer panel form a fourth cavity, and the B-pillar reinforcement panel is arranged in the fourth cavity;

[0022] The B-pillar inner plate includes a B-pillar inner main plate, two B-pillar inner upper connecting plates and two B-pillar inner lower connecting plates, the two B-pillar inner upper connecting plates are respectively arranged on two side surfaces of the top of the B-pillar inner main plate relative to the front-rear direction, and the two B-pillar inner lower connecting plates are respectively arranged on two side surfaces of the bottom of the B-pillar inner main plate relative to the front-rear direction;

[0023] The B-pillar reinforcement plate includes a B-pillar reinforcement main plate, two B-pillar reinforcement upper connecting plates and two B-pillar reinforcement lower connecting plates, the two B-pillar reinforcement upper connecting plates are respectively arranged on two side surfaces of the top of the B-pillar reinforcement main plate relative to the front-rear direction, and the two B-pillar reinforcement lower connecting plates are respectively arranged on two side surfaces of the bottom of the B-pillar reinforcement main plate relative to the front-rear direction;

[0024] One side of the B-pillar inner main board along the front-to-back direction, one side of the B-pillar reinforcement main board along the front-to-back direction and the side enclosure outer panel overlap and are connected, the other side of the B-pillar inner main board along the front-to-back direction is built and connected to the other side of the B-pillar reinforcement main board along the front-to-back direction, the top of the B-pillar inner main board, the top of the B-pillar reinforcement main board and the top of the side enclosure outer panel overlap and are connected, the bottom of the B-pillar inner main board, the bottom of the B-pillar reinforcement main board and the bottom of the side enclosure outer panel overlap and are connected, the front end of the side enclosure middle rib is connected to the side of the B-pillar inner main board, the B-pillar inner upper connecting plate, the B-pillar reinforcement upper connecting plate and the side enclosure connection upper rib correspond to each other, the B-pillar inner upper connecting plate, the B-pillar reinforcement upper connecting plate and the side enclosure connection upper rib overlap and are connected, the B-pillar inner lower connecting plate, the B-pillar reinforcement lower connecting plate and the side enclosure connection lower rib correspond to each other, the B-pillar inner lower connecting plate, the B-pillar reinforcement lower connecting plate and the side enclosure connection lower rib overlap and are connected.

[0025] Optionally, the side enclosure outer panel, one side of the top cover outer panel along the left-right direction and one side of the top beam along the left-right direction overlap and are connected at a first top connection, the side enclosure outer panel, the side enclosure connection upper rib and the top beam overlap and are connected at a second top connection, and the portion of the side enclosure outer panel and the portion of the top beam located between the first top connection and the second top connection form a fifth cavity.

[0026] Optionally, it also includes a plurality of top connecting bolts, the side outer panel, the top cover outer panel and the top beam are connected by welding at a first top connection, and the side outer panel, the side outer panel connection rib and the top beam are connected at a second top connection by a plurality of top connecting bolts spaced apart in the front-to-back direction.

[0027] Optionally, the roof assembly further includes an upper rear beam extending in the left-right direction, the upper rear beam being arranged on the bottom surface of the rear portion of the roof outer panel, the upper rear beam including a first rear beam outer panel and a first rear beam inner panel, the first rear beam outer panel and the first rear beam inner panel being in an L-shaped structure, the first rear beam outer panel and the first rear beam inner panel enclosing a sixth cavity, the front portion of the first rear beam outer panel being arranged and connected to the top portion of the first rear beam inner panel, and the rear portion of the first rear beam inner panel being arranged and connected to the bottom portion of the first rear beam outer panel;

[0028] The bottom assembly also includes a lower rear beam, the lower rear beam is arranged on the bottom surface of the rear part of the floor, the lower rear beam includes a second rear beam reinforcement plate, a second rear beam inner plate and a second rear beam outer plate extending in the left-right direction, the second rear beam inner plate and the second rear beam outer plate are arranged in sequence from front to back, the floor cover is arranged on the top surfaces of the second rear beam outer plate and the second rear beam inner plate, the floor, the second rear beam inner plate and the second rear beam outer plate form a seventh cavity, the second rear beam reinforcement plate is arranged in the seventh cavity, the bottom of the second rear beam outer plate is built and connected to the bottom of the second rear beam inner plate, the second rear beam reinforcement plate is respectively built and connected to the side surface of the second rear beam outer plate relative to the second rear beam inner plate and the side surface of the second rear beam inner plate relative to the second rear beam outer plate, the top of the second rear beam inner plate and the top of the second rear beam outer plate are connected to the bottom surface of the floor;

[0029] The side panel assembly further includes a D-pillar panel assembly, which is arranged on the side of the side panel outer plate relative to the other side panel assembly and is located on one side of the upper rear beam and the lower rear beam in the left-right direction;

[0030] The D-pillar panel assembly includes a D-pillar inner panel, a D-pillar reinforcement panel and a D-pillar outer panel which are sequentially arranged from the inside to the outside, the front of the top of the D-pillar outer panel is connected to the rear of the side panel outer panel, and the top of the D-pillar outer panel is connected to the side of the first rear beam outer panel relative to the left and right directions relative to the side of the other side panel assembly;

[0031] The D-pillar inner plate comprises a D-pillar inner main plate, a first upper connecting plate in the D-pillar and a second upper connecting plate in the D-pillar, wherein the first upper connecting plate in the D-pillar is arranged in front of the top of the D-pillar inner main plate, the second upper connecting plate in the D-pillar is arranged on the side of the top of the D-pillar inner main plate relative to the other side enclosure component, the front portion of the first upper connecting plate in the D-pillar is laid on and connected to the rear end of the side enclosure connecting upper rib, one end of the second upper connecting plate in the D-pillar relative to the left and right direction is laid on and connected to one end of the first rear beam inner plate relative to the left and right direction, and the side of the D-pillar inner plate is connected to the floor;

[0032] The D-pillar reinforcement plate is constructed and connected to the D-pillar outer plate and the D-pillar inner main plate.

[0033] Optionally, it also includes a plurality of bottom connecting bolts;

[0034] The D-pillar reinforcement plate includes a D-pillar reinforcement main plate, a D-pillar reinforcement first upper connecting plate and a D-pillar reinforcement second upper connecting plate, wherein the D-pillar reinforcement first upper connecting plate is arranged in front of the top of the D-pillar reinforcement main plate, and the D-pillar reinforcement second upper connecting plate is arranged on the side of the top of the D-pillar reinforcement main plate relative to the other side enclosure component;

[0035] The D-pillar reinforcement main plate is laid and connected to the D-pillar outer plate and the D-pillar inner main plate, the front portion of the D-pillar reinforcement first upper connecting plate, the front portion of the first upper connecting plate in the D-pillar and the rear end of the side enclosure connecting upper rib overlap and connect, and one end of the D-pillar reinforcement second upper connecting plate relative to the left and right direction, one end of the second upper connecting plate in the D-pillar relative to the left and right direction and one end of the first rear beam inner plate relative to the left and right direction overlap and connect;

[0036] The front of the bottom of the D-pillar reinforcement main plate, the rear of the top of the side panel outer plate and the front of the bottom of the D-pillar inner main plate are overlapped and connected, and the side surfaces of the bottom of the D-pillar reinforcement main plate relative to the left and right directions, the side surfaces of the D-pillar inner main plate relative to the left and right directions, the rear of the second rear beam reinforcement plate, and the side surfaces of the second rear beam outer plate relative to the left and right directions are overlapped and connected by a plurality of bottom connection bolts spaced apart in the vertical direction.

[0037] Compared with the prior art, the vehicle body according to the embodiment of the present invention has the following beneficial effects:

[0038] In the vehicle body of the present invention, two side panel assemblies are arranged opposite to each other and at intervals in the left-right direction, and the top cover assembly and the bottom assembly are arranged at intervals between the two side panel assemblies from top to bottom, and the above four components form a cavity that can accommodate passengers and objects. Further, in the side panel assemblies, the side panel connecting upper ribs, the side panel middle ribs and the side panel connecting lower ribs are arranged at intervals in sequence from top to bottom on the side panel outer panel, and a plurality of side panel reinforcing ribs are arranged between the side panel connecting upper ribs and the side panel middle ribs. The side panel reinforcing ribs are connected to the side panel outer panel, the side panel connecting upper ribs and the side panel middle ribs, and a plurality of side panel reinforcing ribs are arranged between the side panel middle ribs and the side panel connecting lower ribs. The side panel reinforcing ribs are connected to the side panel outer panel, the side panel middle ribs and the side panel connecting lower ribs, so that the side panel connecting upper ribs, the side panel middle ribs and the side panel connecting lower ribs form a plurality of closed connected ring structures on the side panel outer panel. Further, in the bottom assembly, the plurality of side panel connecting upper ribs, the side panel middle ribs and the side panel connecting lower ribs are arranged on the floor surface. The two ends of the bottom beam along the left and right directions are respectively connected to the side panel connecting lower ribs of the side panel assemblies on both sides, so that the bottom beam and the side panel connecting lower ribs form a plurality of closed connected ring structures. Furthermore, in the top cover assembly, the multiple top beams arranged on the bottom surface of the top cover outer panel are respectively connected to the side panel connecting upper ribs of the side panel assemblies on both sides, so that the top beam and the side panel connecting upper ribs form a plurality of closed connected ring structures. Furthermore, the top beam, the bottom beam and the side panel reinforcement ribs form a plurality of closed connected ring structures. In summary, the vehicle body of the present invention is connected by a plurality of connecting ribs on the side panel outer panel, the top cover outer panel and the floor to form ring structures located on multiple planes. These ring structures can effectively enhance the strength and rigidity of the vehicle body, so that the vehicle body can effectively resist external force, reduce deformation caused by external force and reduce the probability of damage caused by deformation, so as to ensure smooth driving and high driving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a front view of the side panel in the prior art.

[0040] Figure 2 for Figure 1 Cross-sectional view of ZZ.

[0041] Figure 3 It is a structural schematic diagram of the vehicle body of the present invention.

[0042] Figure 4 This is a schematic structural diagram of the vehicle body of the present invention cut in half and ignoring the floor, side outer panels and roof outer panels.

[0043] Figure 5 It is a top view of the vehicle body of the present invention.

[0044] Figure 6 for Figure 5 Sectional view of AA.

[0045] Figure 7 for Figure 6 A partial enlarged view of part B in the middle.

[0046] Figure 8 for Figure 7 Cross-section of the CC (showing only the side reinforcement ribs and side outer panels).

[0047] Fig. 9 for Figure 7 Cross-section of the middle DD (showing only the side center rib and side outer panel).

[0048] Fig.10 for Figure 6 A partial enlarged view of the middle E part

[0049] Fig.11 for Fig.10 A cross-sectional view of the FF.

[0050] Fig.12 for Fig.10 Cross-section diagram of GG.

[0051] Fig.13 for Figure 6 A partial enlarged view of the middle H section (the viewing angle has changed to a certain extent).

[0052] Fig.14 for Fig.13 Sectional view of II.

[0053] Fig.15 for Fig.13 Cross-sectional view of JJ.

[0054] Fig.16 It is a schematic diagram of the structure of the B-pillar panel assembly.

[0055] Fig.17 It is a schematic diagram of the structure of the inner panel of the B-pillar.

[0056] Fig.18 Schematic diagram of the structure of the B-pillar reinforcement plate.

[0057] Fig.19 for Figure 6 Sectional view of KK.

[0058] Fig. 20 for Figure 6 Cross-sectional view of LL.

[0059] Fig.21 for Figure 5 Cross-sectional view of MM.

[0060] Fig. 22 Schematic diagram of the structure at the D-pillar panel assembly (ignoring the roof outer panel and floor).

[0061] Fig.23 This is an exploded view of the D-pillar panel assembly.

[0062] Fig.24 It is a schematic diagram of the structure of the upper part of the D-pillar outer panel (looking from the outside to the inside).

[0063] Fig.25 Schematic diagram of the structure of the upper part of the D-pillar inner panel (looking from the inside to the outside).

[0064] Fig.26 Schematic diagram of the structure of the upper part of the D-pillar reinforcement plate (viewed from the inside to the outside).

[0065] Fig. 27 The rear view shows the upper portion of the D-pillar panel assembly.

[0066] Fig.28 for Fig. 27 Cross-sectional view of NN.

[0067] Fig.29 This is an exploded view of the D-pillar panel assembly from another perspective.

[0068] Fig.30 The rear view shows the lower portion of the D-pillar panel assembly.

[0069] Fig.31 for Fig.30 Cross-sectional view of OO.

[0070] Fig.32 for Fig.30 Cross-sectional view of PP.

[0071] Fig.33 for Fig.32 A partial enlarged view of the middle Q section.

[0072] Figure numerals: 1, side enclosure assembly; 11, side enclosure outer plate; 111, wheel house notch; 12, side enclosure connection upper rib; 121, first lap upper rib plate; 122, second lap upper rib plate; 123, first extended upper rib plate; 1231, liquid leakage through hole; 124, second extended upper rib plate; 125, upper rib reinforcement plate; 126, first cavity; 13, side enclosure connection lower rib; 131, first vertical lower rib plate; 132, second vertical lower rib plate; 133, horizontal lower rib plate; 14, side enclosure reinforcement rib; 141, reinforcement arch plate; 142, reinforcement lap plate; 1 43. Second cavity; 15. Side center rib; 151. Arched center rib plate; 152. Overlap center rib plate; 16. Wheel housing connection rib; 17. Side lap plate; 18. B-pillar panel assembly; 181. B-pillar inner panel; 1811. B-pillar inner main panel; 1812. B-pillar inner upper connecting plate; 1813. B-pillar inner lower connecting plate; 182. B-pillar reinforcement plate; 1821. B-pillar reinforcement main panel; 1822. B-pillar reinforcement upper connecting plate; 1823. B-pillar reinforcement lower connecting plate; 183. Fourth cavity; 19. D-pillar panel assembly; 191. D-pillar inner panel; 191 1. D-pillar inner main board; 1912. D-pillar inner first upper connecting plate; 1913. D-pillar inner second upper connecting plate; 192. D-pillar reinforcement plate; 1921. D-pillar reinforcement main board; 1922. D-pillar reinforcement first upper connecting plate; 1923. D-pillar reinforcement second upper connecting plate; 193. D-pillar outer board; 2. Bottom assembly; 21. Floor; 22. Bottom beam; 23. Lower rear beam; 231. Second rear beam reinforcement plate; 232. Second rear beam inner plate; 233. Second rear beam outer plate; 234. Seventh cavity; 3. Top cover assembly; 31. Top cover outer plate; 32. Top beam ; 33. Upper rear beam; 331. First rear beam outer plate; 332. First rear beam inner plate; 333. Sixth cavity; 4. Wheel cover assembly; 41. Wheel cover inner plate; 411. Wheel cover inner lap plate; 412. Wheel cover inner extension plate; 42. Wheel cover outer plate; 421. First wheel cover outer lap plate; 422. Second wheel cover outer lap plate; 423. First wheel cover outer extension plate; 424. Second wheel cover outer extension plate; 5. Door sill assembly; 51. Door sill inner plate; 52. Wheel cover connecting plate; 53. Third cavity; 6. Top connecting bolt; 7. Bottom connecting bolt; 8. Fifth cavity. DETAILED DESCRIPTION

[0073] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0074] In the description of the present invention, it should be understood that the orientations or positional relationships indicated by the terms "top", "bottom", "inside", "outside", "circumferential", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0075] 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 the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0076] like Figures 3 to 33 As shown, a vehicle body of the present invention comprises a top cover assembly 3, a bottom assembly 2 and two side enclosure assemblies 1, wherein the two side enclosure assemblies 1 are arranged opposite to each other and spaced apart in the left-right direction, and the top cover assembly 3 and the bottom assembly 2 are spaced apart between the two side enclosure assemblies 1 from top to bottom;

[0077] The side enclosure assembly 1 comprises a side enclosure outer panel 11, a side enclosure connecting upper rib 12, a side enclosure connecting lower rib 13, a side enclosure middle rib 15 and a plurality of side enclosure reinforcing ribs 14, wherein the side enclosure connecting upper rib 12, the side enclosure middle rib 15, the side enclosure connecting lower rib 13 and the side enclosure reinforcing rib 14 are arranged on the side of the side enclosure outer panel 11 relative to the other side enclosure assembly 1, and the side enclosure connecting upper rib 12, the side enclosure middle rib 15 and the side enclosure connecting lower rib 13 are arranged in sequence from top to bottom. The side enclosure reinforcing ribs 14 are arranged at intervals between the side enclosure connecting upper ribs 12 and the side enclosure middle ribs 15 along the front-to-back direction, and the top and bottom ends of the side enclosure reinforcing ribs 14 are respectively connected to the side enclosure connecting upper ribs 12 and the side enclosure middle ribs 15, and a plurality of the side enclosure reinforcing ribs 14 are arranged at intervals between the side enclosure middle ribs 15 and the side enclosure connecting lower ribs 13 along the front-to-back direction, and the top and bottom ends of the side enclosure reinforcing ribs 14 are respectively connected to the side enclosure middle ribs 15 and the side enclosure connecting lower ribs 13;

[0078] The bottom assembly 2 includes a floor 21 and a plurality of bottom beams 22, wherein the plurality of bottom beams 22 are arranged at intervals on the bottom surface of the floor 21 along the front-rear direction, and the two ends of the bottom beams 22 along the left-right direction are respectively connected to the side enclosure connecting lower ribs 13 of the two side enclosure assemblies 1;

[0079] The top cover assembly 3 includes a top cover outer panel 31 and a plurality of top beams 32 , wherein the plurality of top beams 32 are arranged at intervals along the front-to-rear direction on the bottom surface of the top cover outer panel 31 , and the two ends of the top beams 32 along the left-to-right direction are respectively connected to the side enclosure connecting upper ribs 12 of the two side enclosure assemblies 1 .

[0080] In the above technical solution, the two side enclosure components 1 are arranged opposite to each other and spaced apart in the left-right direction, the top cover component 3 and the bottom component 2 are spaced apart from each other between the two side enclosure components 1 from top to bottom, and the above four components enclose a cavity that can accommodate passengers and items. Further, in the side enclosure component 1, the side enclosure connecting upper rib 12, the side enclosure middle rib 15 and the side enclosure connecting lower rib 13 are spaced apart from each other on the side enclosure outer plate 11 from top to bottom, and a plurality of side enclosure reinforcing ribs 14 are arranged on the side enclosure connecting upper rib 12 and the side enclosure middle rib 15. The side enclosure reinforcement ribs 14 are connected to the side enclosure outer panel 11, the side enclosure connection upper ribs 12 and the side enclosure middle ribs 15, and multiple side enclosure reinforcement ribs 14 are arranged between the side enclosure middle ribs 15 and the side enclosure connection lower ribs 13. The side enclosure reinforcement ribs 14 are connected to the side enclosure outer panel 11, the side enclosure middle ribs 15 and the side enclosure connection lower ribs 13, so that the side enclosure connection upper ribs 12, the side enclosure middle ribs 15 and the side enclosure connection lower ribs 13 form multiple closed connected ring structures on the side enclosure outer panel 11. Further, in the bottom component 2, its The multiple bottom beams 22 arranged on the ground of the floor 21 are respectively connected to the side enclosure connecting lower ribs 13 of the side enclosure assemblies 1 on both sides at both ends in the left and right directions, so that the bottom beams 22 and the side enclosure connecting lower ribs 13 form a plurality of closed connected annular structures. Furthermore, in the top cover assembly 3, the multiple top beams 32 arranged on the bottom surface of the top cover outer panel 31 are respectively connected to the side enclosure connecting upper ribs 12 of the side enclosure assemblies 1 on both sides at both ends in the left and right directions, so that the top beams 32 and the side enclosure connecting upper ribs 12 form a plurality of closed connected annular structures. Further, the top beams 32, the bottom beams 22 and the side enclosure reinforcing ribs 14 form a plurality of closed connected annular structures. In summary, the vehicle body of the present invention is connected through the side enclosure outer panel 11, the top cover outer panel 31 and the multiple connecting ribs on the floor 21 to form annular structures located on multiple planes. These annular structures can effectively enhance the strength and rigidity of the vehicle body, so that the vehicle body can effectively resist external forces, reduce deformation caused by external forces and reduce the probability of damage caused by deformation, so that driving is smooth and safe.

[0081] Furthermore, the top beam 32, the bottom beam 22 and the side panel reinforcement ribs 14 of the two side panel assemblies 1 can be arranged correspondingly so that the vehicle body has a better force-bearing structure and improves its strength and rigidity.

[0082] Further, such as Figure 4 , 6, 7, 8, 9, 10, 11 and 12, the side enclosure center rib 15 includes a raised center rib plate 151 and two overlapping center rib plates 152, the raised center rib plate 151 is raised in a direction away from the side enclosure outer panel 11, the two overlapping center rib plates 152 are respectively arranged on both sides of the raised center rib plate 151 along the vertical direction, and are connected to the raised center rib plate 151, the overlapping center rib plate 152 is connected to the side enclosure outer panel 11; the side enclosure connecting upper rib 12 includes a first overlapping upper rib plate 121, a first extended upper rib plate 123, a second extended upper rib plate 124 and a second overlapping upper rib plate 122 which are connected in sequence, the side surface of the first overlapping upper rib plate 121 is connected to the side enclosure outer panel 11, the first extended upper rib plate 123, The second extended upper rib plate 124 and the side enclosure outer panel 11 enclose a first cavity 126, the second overlapped upper rib plate 122, the side enclosure outer panel 11 and the top cover outer panel 31 overlap and are connected, the first extended upper rib plate 123 is provided with a plurality of leakage holes 1231 spaced apart in the front-to-back direction, the side enclosure connecting upper rib 12 also includes a plurality of upper rib reinforcement plates 125 corresponding to the leakage holes 1231 one by one, the upper rib reinforcement plates 125 are provided on the side of the first extended upper rib plate 123 relative to the side enclosure outer panel 11, and the upper rib reinforcement plates 125 are provided around the corresponding leakage holes 1231; the side enclosure connecting lower rib 13 includes a first vertical lower rib plate 131, a second vertical lower rib plate 132 and a horizontal lower rib plate 1 33, the first vertical lower rib plate 131 is arranged on the bottom surface of the horizontal lower rib plate 133 close to the side outer panel 11, the second vertical lower rib plate 132 is arranged on the top surface of the horizontal lower rib plate 133 away from the side outer panel 11, and the side of the second vertical lower rib plate 132 away from the side outer panel 11 is connected to the floor 21; the side enclosure reinforcement rib 14 includes a reinforcement arched plate 141 and two reinforcement lap plates 142, the reinforcement arched plate 141 is arched in the direction away from the side outer panel 11, the reinforcement arched plate 141 and the side outer panel 11 surround a second cavity 143, the two reinforcement lap plates 142 are respectively arranged on both sides of the reinforcement arched plate 141 along the front-rear direction, and are connected to the reinforcement A strong arched plate 141, the side of the reinforced lap plate 142 is connected to the side outer panel 11, the reinforced lap plate 142 is overlapped on the arched middle rib plate 151 and the overlapped middle rib plate 152, and is connected to the arched middle rib plate 151 and the overlapped middle rib plate 152, the top surface of the reinforced lap plate 142 of the side enclosure reinforcement rib 14 located above is connected to the second extended upper rib plate 124, the second cavity 143 of the side enclosure reinforcement rib 14 is connected to the first cavity 126, the bottom surface of the side enclosure reinforcement rib 14 located below is connected to the top surface of the horizontal lower rib plate 133, and the side of the side enclosure reinforcement rib 14 is connected to the side of the second vertical lower rib plate 132 close to the side outer panel 11;The shapes and interconnected relationships of the aforementioned side enclosure connecting upper ribs 12, side enclosure connecting lower ribs 13, side enclosure middle ribs 15 and multiple side enclosure reinforcing ribs 14 can effectively enhance the strength and rigidity of the side enclosure assembly 1. Furthermore, the electrophoresis liquid can be discharged through the first cavity 126 and the second cavity 143. The liquid leakage through hole 1231 is conducive to electrophoresis liquid leakage and weight reduction, and can be used for hoisting. ;

[0083] Furthermore, the overlapped middle rib plate 152 located at the top and the side outer panel 11 are connected by shock-absorbing glue, and the overlapped middle rib plate 152 located at the bottom and the side outer panel 11 are welded; the side of the first overlapped upper rib plate 121 is connected to the side outer panel 11 by shock-absorbing glue, and the second overlapped upper rib plate 122, the side outer panel 11 and the top cover outer panel 31 are connected by welding; the top surface of the horizontal lower rib plate 133 is welded to the bottom surface of the side reinforcement rib 14 located below, and the side of the second vertical lower rib plate 132 is welded to the floor 21; the reinforced lap plate 142 and the side outer panel 11 are connected by shock-absorbing glue, and the reinforced lap plate 142 is welded to the arched middle rib plate 15 1 and the overlapping middle rib plate 152, the top surface of the reinforcing lap plate 142 of the side enclosure reinforcement rib 14 located above is welded to the second extended upper rib plate 124, the bottom surface of the side enclosure reinforcement rib 14 located below is welded to the top surface of the horizontal lower rib plate 133, and the side surface of the side enclosure reinforcement rib 14 is welded to the side surface of the second vertical lower rib plate 132 close to the side enclosure outer panel 11; wherein, the vibration of the side enclosure outer panel 11 can be effectively absorbed by connecting with the shock-absorbing adhesive, and no traces that affect the visual effect are exposed on the outer side surface of the side enclosure outer panel 11. Furthermore, the outer side surface of the overlapping middle rib plate 152 located below corresponding to the position of the side enclosure outer panel 11 is provided with other equipment shielding, so the welding connection is used here.

[0084] Further, such as Figure 6 , 13As shown in FIG. 14 , the side enclosure assembly 1 further includes a wheel housing connecting rib 16, the wheel housing connecting rib 16 is disposed on the side of the side enclosure outer panel 11 relative to the other side enclosure assembly 1, the wheel housing connecting rib 16 is located below the side enclosure middle rib 15, the top end of the wheel housing connecting rib 16 is connected to the side enclosure middle rib 15, and the wheel housing connecting rib 16 is connected to the side enclosure outer panel 11 relative to the side of the side enclosure outer panel 11; the side enclosure assembly 1 further includes a side enclosure lap plate 17, the side enclosure outer panel 11 The bottom surface of the wheel housing is provided with a wheel housing notch 111 corresponding to the wheel housing connecting rib 16, and the side enclosure lap plate 17 is arranged along the wheel housing notch 111 and extends toward the other side enclosure assembly 1; the vehicle body also includes two wheel housing assemblies 4 corresponding to the side enclosure assemblies 1 one by one, the wheel housing assemblies 4 are arranged corresponding to the wheel housing notch 111, the wheel housing assembly 4 includes a wheel housing inner plate 41 and a wheel housing outer plate 42, the wheel housing inner plate 41 includes a wheel housing inner lap plate 411 and a wheel housing inner extension plate 41 connected in sequence 2, the wheel house outer panel 42 includes a first wheel house outer lap plate 421, a first wheel house outer extension plate 423, a second wheel house outer extension plate 424 and a second wheel house outer lap plate 422 which are connected in sequence, the wheel house inner lap plate 411, the first wheel house outer lap plate 421 and the wheel house connecting rib 16 are overlapped and connected, the wheel house inner extension plate 412 extends obliquely downward in a direction away from the side outer panel 11, the wheel house inner extension plate 412 is connected to the floor 21, the first wheel house outer extension plate 423 is connected to the second wheel house outer extension plate 424 and the second wheel house outer lap plate 422 are connected in sequence, the wheel house inner lap plate 411, the first wheel house outer lap plate 421 and the wheel house connecting rib 16 are overlapped and connected, the wheel house inner extension plate 412 extends obliquely downward in a direction away from the side outer panel 11, the wheel house inner extension plate 412 is connected to the floor 21, the first wheel house outer extension plate The extension plate 423 extends toward the direction approaching the side enclosure outer panel 11, the second wheel house outer extension plate 424 extends downward, the second wheel house outer lap plate 422 extends toward the direction away from the side enclosure outer panel 11, and the bottom surface of the second wheel house outer lap plate 422 is connected to the bottom surface of the side enclosure lap plate 17; wherein, the wheel house inner panel 41 and the wheel house outer panel 42 are used to accommodate wheels. Furthermore, through the above-mentioned shape and connection relationship, the side enclosure assembly 1 has better strength and rigidity at the wheel house assembly 4.

[0085] Further, such as Figure 6 and 15As shown, it also includes a plurality of sill assemblies 5, two of which are respectively arranged on both sides of the wheel cover assembly 4 along the front-to-back direction, the sill assembly 5 includes a sill inner panel 51 and a wheel cover connecting panel 52, the sill inner panel 51 is arranged on the side of the side enclosure outer panel 11 facing the other side enclosure assembly 1, the sill inner panel 51 and the side enclosure outer panel 11 enclose a third cavity 53, the wheel cover connecting panel 52 is arranged in the third cavity 53, the top of the sill inner panel 51, the top of the wheel cover connecting panel 52, the reinforcing arched panel 141 and the floor 21 overlap and are connected, the top of the sill inner panel 51, the top of the wheel cover connecting panel 52 and the bottom of the side enclosure outer panel 11 overlap and are connected, one side of the sill inner panel 51 along the front-to-back direction, one side of the wheel cover connecting panel 52 along the front-to-back direction and the second wheel cover outer extension panel 424 overlap and are connected; so as to further improve the strength and rigidity of the side enclosure assembly 1 at the wheel cover assembly 4.

[0086] Further, such as Figures 16 to 20As shown, the side enclosure assembly 1 also includes a B-pillar enclosure assembly 18, two side enclosure connecting upper ribs 12 and two side enclosure connecting lower ribs 13, the B-pillar enclosure assembly 18 is arranged on the side of the side enclosure outer panel 11 relative to the other side enclosure assembly 1, the two side enclosure connecting upper ribs 12 are respectively arranged on both sides of the top of the B-pillar enclosure assembly 18 along the front-to-back direction, and the two side enclosure connecting lower ribs 13 are respectively arranged on both sides of the bottom of the B-pillar enclosure assembly 18 along the front-to-back direction; the B-pillar enclosure assembly 18 includes a B-pillar inner panel 181 and a B-pillar reinforcement plate 182, the B-pillar inner panel 181 and the side enclosure outer panel 11 enclose a fourth cavity 183, and the B-pillar reinforcement plate 182 is arranged in the fourth cavity 183; the B-pillar The inner plate 181 includes a B-pillar inner main board 1811, two B-pillar inner upper connecting plates 1812 and two B-pillar inner lower connecting plates 1813, the two B-pillar inner upper connecting plates 1812 are respectively arranged on the two side surfaces of the top of the B-pillar inner main board 1811 relative to the front-rear direction, and the two B-pillar inner lower connecting plates 1813 are respectively arranged on the two side surfaces of the bottom of the B-pillar inner main board 1811 relative to the front-rear direction; the B-pillar reinforcement plate 182 includes a B-pillar reinforcement main board 1821, two B-pillar reinforcement upper connecting plates 1822 and two B-pillar reinforcement lower connecting plates 1823, the two B-pillar reinforcement upper connecting plates 1822 are respectively arranged on the two side surfaces of the top of the B-pillar reinforcement main board 1821 relative to the front-rear direction, the two B The column reinforcement lower connecting plate 1823 is respectively arranged on the two side surfaces of the bottom of the B-pillar reinforcement main plate 1821 relative to the front-to-back direction; one side of the B-pillar inner main plate 1811 along the front-to-back direction, one side of the B-pillar reinforcement main plate 1821 along the front-to-back direction and the side outer panel 11 are overlapped and connected, the other side of the B-pillar inner main plate 1811 along the front-to-back direction is overlapped and connected to the other side of the B-pillar reinforcement main plate 1821 along the front-to-back direction, the top of the B-pillar inner main plate 1811, the top of the B-pillar reinforcement main plate 1821 and the top of the side outer panel 11 are overlapped and connected, the bottom of the B-pillar inner main plate 1811, the bottom of the B-pillar reinforcement main plate 1821 and the bottom of the side outer panel 11 are overlapped and connected The front end of the side enclosure middle rib 15 is connected to the side of the main board 1811 inside the B-pillar, the upper connecting plate 1812 inside the B-pillar, the upper connecting plate 1822 reinforced by the B-pillar and the upper connecting rib 12 of the side enclosure are in one-to-one correspondence, the upper connecting plate 1812 inside the B-pillar, the upper connecting plate 1822 reinforced by the B-pillar and the upper connecting rib 12 of the side enclosure are overlapped and connected, the lower connecting plate 1813 inside the B-pillar, the lower connecting plate 1823 reinforced by the B-pillar and the lower connecting rib 13 of the side enclosure are in one-to-one correspondence, the lower connecting plate 1813 inside the B-pillar, the lower connecting plate 1823 reinforced by the B-pillar and the lower connecting rib 13 of the side enclosure are overlapped and connected; the B-pillar assembly forms an "I"-shaped structure to strengthen the strength and rigidity of the side enclosure assembly 1 at the B-pillar;Furthermore, the B-pillar inner lower connecting plate 1813 and the B-pillar reinforced lower connecting plate 1823 can also be set up and connected to the rocker inner plate 51 and the wheel house connecting plate 52 to further enhance the strength and rigidity of the lower part of the side enclosure assembly 1. ;

[0087] Further, such as Fig.21 As shown, the side enclosure outer panel 11, one side of the top cover outer panel 31 along the left-right direction and one side of the top beam 32 along the left-right direction are overlapped at the first top connection and connected, the side enclosure outer panel 11, the side enclosure connection upper rib 12 and the top beam 32 are overlapped at the second top connection and connected, and the portion of the side enclosure outer panel 11 and the portion of the top beam 32 located between the first top connection and the second top connection form a fifth cavity 8, which are overlapped and connected to each other to improve the connection strength and rigidity of the top cover assembly 3 and the side enclosure assembly 1; wherein, the first top connection is recessed inward to form a water flow trough.

[0088] Further, such as Fig.21 As shown, it also includes a plurality of top connecting bolts 6. The side outer panel 11, the top cover outer panel 31 and the top beam 32 are connected by welding at the first top connection. The side outer panel 11, the side connecting upper rib 12 and the top beam 32 are connected at the second top connection by a plurality of top connecting bolts 6 arranged at intervals along the front-to-back direction. By combining bolt connection with welding, the installation and welding are facilitated while effectively enhancing the local stiffness and strength here.

[0089] Further, such as Figures 22 to 33As shown, the roof assembly 3 also includes an upper rear beam 33 extending in the left-right direction, the upper rear beam 33 is arranged on the bottom surface of the rear part of the roof outer panel 31, the upper rear beam 33 includes a first rear beam outer panel 331 and a first rear beam inner panel 332, the first rear beam outer panel 331 and the first rear beam inner panel 332 are in an L-shaped structure, the first rear beam outer panel 331 and the first rear beam inner panel 332 surround a sixth cavity 333, the front part of the first rear beam outer panel 331 is erected and connected to the top of the first rear beam inner panel 332, the rear part of the first rear beam inner panel 332 is erected and connected to the The bottom of the first rear beam outer plate 331; the bottom component 2 also includes a lower rear beam 23, the lower rear beam 23 is arranged on the bottom surface of the rear part of the floor 21, the lower rear beam 23 includes a second rear beam reinforcement plate 231, a second rear beam inner plate 232 extending in the left-right direction and a second rear beam outer plate 233, the second rear beam inner plate 232 and the second rear beam outer plate 233 are arranged in sequence from front to back, the floor 21 is covered on the top surface of the second rear beam outer plate 233 and the second rear beam inner plate 232, the floor 21, the second rear beam inner plate 232 and the second rear beam outer plate 233 form a The seventh cavity 234, the second rear beam reinforcement plate 231 is arranged in the seventh cavity 234, the bottom of the second rear beam outer plate 233 is built and connected to the bottom of the second rear beam inner plate 232, the second rear beam reinforcement plate 231 is built and connected to the side of the second rear beam outer plate 233 relative to the second rear beam inner plate 232 and the side of the second rear beam inner plate 232 relative to the second rear beam outer plate 233, the top of the second rear beam inner plate 232 and the top of the second rear beam outer plate 233 are connected to the bottom surface of the floor 21; the side enclosure assembly 1 also includes D A pillar panel assembly 19, wherein the D-pillar panel assembly 19 is arranged on the side of the side panel outer panel 11 relative to the other side panel assembly 1, and is located on one side of the upper rear beam 33 and the lower rear beam 23 in the left-right direction; the D-pillar panel assembly 19 comprises a D-pillar inner panel 191, a D-pillar reinforcement panel 192 and a D-pillar outer panel 193 arranged in sequence from the inside to the outside, the front of the top of the D-pillar outer panel 193 is connected to the rear of the side panel outer panel 11, and the top of the D-pillar outer panel 193 is connected to the side of the first rear beam outer panel 331 relative to the left-right direction relative to the side of the other side panel assembly 1;The D-pillar inner plate 191 includes a D-pillar inner main plate 1911, a first upper connecting plate 1912 in the D-pillar, and a second upper connecting plate 1913 in the D-pillar. The first upper connecting plate 1912 in the D-pillar is arranged in front of the top of the D-pillar inner main plate 1911. The second upper connecting plate 1913 in the D-pillar is arranged on the side of the top of the D-pillar inner main plate 1911 relative to the other side of the side panel assembly 1. The front part of the first upper connecting plate 1912 in the D-pillar is set up and connected to the side panel connecting upper rib 12. At the rear end, the second upper connecting plate 1913 in the D-pillar is built and connected to one end of the first rear beam inner plate 332 in the left-right direction, and the side of the D-pillar inner plate 191 is connected to the floor 21; the D-pillar reinforcement plate 192 is built and connected to the D-pillar outer plate 193 and the D-pillar inner main plate 1911; the above structure and connection relationship make the D-pillar panel assembly 19, the upper rear beam 33 and the lower rear beam 23 form a closed ring structure, so as to have good strength and rigidity. ;

[0090] Further, such as Figures 22 to 33 As shown, it also includes a plurality of bottom connecting bolts 7; the D-pillar reinforcement plate 192 includes a D-pillar reinforcement main plate 1921, a D-pillar reinforcement first upper connecting plate 1922 and a D-pillar reinforcement second upper connecting plate 1923, the D-pillar reinforcement first upper connecting plate 1922 is arranged in front of the top of the D-pillar reinforcement main plate 1921, and the D-pillar reinforcement second upper connecting plate 1923 is arranged on the top of the D-pillar reinforcement main plate 1921 relative to the side of the other side panel assembly 1; the D-pillar reinforcement main plate 1921 is built and connected to the D-pillar outer plate 193 and the D-pillar inner main plate 1911, the front part of the D-pillar reinforcement first upper connecting plate 1922, the front part of the D-pillar inner first upper connecting plate 1912 and the rear end of the side panel connection upper rib 12 are overlapped and connected, and the D-pillar reinforcement second upper connecting plate 1923 is relative to one end in the left and right direction, the second upper connecting plate in the D-pillar 1913 is overlapped and connected with one end of the first rear beam inner plate 332 relative to the left and right directions; the front of the bottom of the D-pillar reinforcement main plate 1921, the rear of the top of the side panel outer plate 11 and the front of the bottom of the D-pillar inner main plate 1911 are overlapped and connected, the side of the bottom of the D-pillar reinforcement main plate 1921 relative to the left and right directions, the side of the D-pillar inner main plate 1911 relative to the left and right directions, the rear of the second rear beam reinforcement plate 231, and the side of the second rear beam outer plate 233 relative to the left and right directions are overlapped and connected by multiple bottom connecting bolts 7 arranged at intervals in the vertical direction; through the above-mentioned structure and connection relationship, the upper and lower parts of the D-pillar inner plate 191 and the upper and lower parts of the D-pillar reinforcement plate 192 form a three-way connection structure to further increase the connection strength and rigidity of the top and bottom ends of the D-pillar panel assembly 19.

[0091] Furthermore, the specific connection methods of fixed setting and fixed connection refer to the relative position relationship of two components that can be fixedly connected, including fixing by connecting parts, fixing by welding, fixing by adhesives, fixing by integral molding, and fixing by snap connections.

[0092] Furthermore, the specific connection method of the detachable connection refers to that the two connected parts can be disassembled and assembled repeatedly and multiple times without being damaged or seriously deformed, including fixation by a connecting piece and fixation by a snap connection.

[0093] Furthermore, the connecting parts include fasteners, straps, ties, pneumatic connecting elements, hydraulic connecting elements, flange plates, Velcro, and buttons.

[0094] In summary, the embodiment of the present invention provides a vehicle body, and its technical effects are as follows:

[0095] In the vehicle body of the present invention, two side enclosure components 1 are arranged opposite to each other in the left-right direction and at intervals, and the top cover component 3 and the bottom component 2 are arranged at intervals between the two side enclosure components 1 from top to bottom, and the above four components enclose a cavity that can accommodate passengers and items. Further, in the side enclosure component 1, the side enclosure connecting upper rib 12, the side enclosure middle rib 15 and the side enclosure connecting lower rib 13 are arranged at intervals on the side enclosure outer plate 11 from top to bottom, and a plurality of side enclosure reinforcing ribs 14 are arranged on the side enclosure connecting upper rib 12 and the side enclosure middle rib 15. The side enclosure reinforcement ribs 14 are connected to the side enclosure outer panel 11, the side enclosure connection upper ribs 12 and the side enclosure middle ribs 15, and multiple side enclosure reinforcement ribs 14 are arranged between the side enclosure middle ribs 15 and the side enclosure connection lower ribs 13. The side enclosure reinforcement ribs 14 are connected to the side enclosure outer panel 11, the side enclosure middle ribs 15 and the side enclosure connection lower ribs 13, so that the side enclosure connection upper ribs 12, the side enclosure middle ribs 15 and the side enclosure connection lower ribs 13 form multiple closed connected ring structures on the side enclosure outer panel 11. Further, in the bottom component 2, its The multiple bottom beams 22 arranged on the ground of the floor 21 are respectively connected to the side enclosure connecting lower ribs 13 of the side enclosure assemblies 1 on both sides at both ends in the left and right directions, so that the bottom beams 22 and the side enclosure connecting lower ribs 13 form a plurality of closed connected annular structures. Furthermore, in the top cover assembly 3, the multiple top beams 32 arranged on the bottom surface of the top cover outer panel 31 are respectively connected to the side enclosure connecting upper ribs 12 of the side enclosure assemblies 1 on both sides at both ends in the left and right directions, so that the top beams 32 and the side enclosure connecting upper ribs 12 form a plurality of closed connected annular structures. Further, the top beams 32, the bottom beams 22 and the side enclosure reinforcing ribs 14 form a plurality of closed connected annular structures. In summary, the vehicle body of the present invention is connected through the side enclosure outer panel 11, the top cover outer panel 31 and the multiple connecting ribs on the floor 21 to form annular structures located on multiple planes. These annular structures can effectively enhance the strength and rigidity of the vehicle body, so that the vehicle body can effectively resist external forces, reduce deformation caused by external forces and reduce the probability of damage caused by deformation, so that driving is smooth and safe.

[0096] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A vehicle body, characterized in that: The invention comprises a top cover assembly (3), a bottom assembly (2) and two side enclosure assemblies (1), wherein the two side enclosure assemblies (1) are arranged opposite to each other and spaced apart in the left-right direction, and the top cover assembly (3) and the bottom assembly (2) are spaced apart between the two side enclosure assemblies (1) from top to bottom; The side enclosure assembly (1) comprises a side enclosure outer plate (11), an upper side enclosure connecting rib (12), a lower side enclosure connecting rib (13), a middle side enclosure rib (15) and a plurality of side enclosure reinforcing ribs (14); the upper side enclosure connecting rib (12), the middle side enclosure rib (15), the lower side enclosure connecting rib (13) and the side enclosure reinforcing rib (14) are arranged on a side of the side enclosure outer plate (11) relative to another side enclosure assembly (1); the upper side enclosure connecting rib (12), the middle side enclosure rib (15) and the lower side enclosure connecting rib (13) are arranged in sequence from top to bottom. A plurality of the side enclosure reinforcing ribs (14) are arranged at intervals along the front-to-back direction between the side enclosure connecting upper rib (12) and the side enclosure middle rib (15), and the top and bottom ends of the side enclosure reinforcing ribs (14) are respectively connected to the side enclosure connecting upper rib (12) and the side enclosure middle rib (15); a plurality of the side enclosure reinforcing ribs (14) are arranged at intervals along the front-to-back direction between the side enclosure middle rib (15) and the side enclosure connecting lower rib (13), and the top and bottom ends of the side enclosure reinforcing ribs (14) are respectively connected to the side enclosure middle rib (15) and the side enclosure connecting lower rib (13); The bottom assembly (2) comprises a floor (21) and a plurality of bottom beams (22), wherein the plurality of bottom beams (22) are arranged at intervals on the bottom surface of the floor (21) along the front-rear direction, and the two ends of the bottom beams (22) along the left-right direction are respectively connected to the side enclosure connecting lower ribs (13) of the two side enclosure assemblies (1); The top cover assembly (3) comprises a top cover outer plate (31) and a plurality of top beams (32), wherein the plurality of top beams (32) are arranged at intervals on the bottom surface of the top cover outer plate (31) along the front-rear direction, and the two ends of the top beam (32) along the left-right direction are respectively connected to the side enclosure connecting upper ribs (12) of the two side enclosure assemblies (1).

2. The vehicle body according to claim 1, characterized in that: The side enclosure center rib (15) comprises an arched center rib plate (151) and two overlapping center rib plates (152), wherein the arched center rib plate (151) arches in a direction away from the side enclosure outer plate (11), and the two overlapping center rib plates (152) are respectively arranged on both sides of the arched center rib plate (151) in a vertical direction and connected to the arched center rib plate (151), and the overlapping center rib plates (152) are connected to the side enclosure outer plate (11); The side enclosure connecting upper rib (12) comprises a first overlapping upper rib plate (121), a first extended upper rib plate (123), a second extended upper rib plate (124) and a second overlapping upper rib plate (122) which are connected in sequence, wherein the side surface of the first overlapping upper rib plate (121) is connected to the side enclosure outer plate (11), the first extended upper rib plate (123), the second extended upper rib plate (124) and the side enclosure outer plate (11) form a first cavity (126), and the second overlapping upper rib plate (122) and the side enclosure outer plate (11) form a first cavity (126). ) and the top cover outer plate (31) are overlapped and connected, the first extended upper rib plate (123) is provided with a plurality of leakage holes (1231) at intervals along the front-to-back direction, the side enclosure connecting upper rib (12) further comprises a plurality of upper rib reinforcement plates (125) corresponding one to one to the leakage holes (1231), the upper rib reinforcement plates (125) are provided on the side of the first extended upper rib plate (123) relative to the side enclosure outer plate (11), and the upper rib reinforcement plates (125) are provided around the corresponding leakage holes (1231); The side enclosure connecting lower ribs (13) include a first vertical lower rib plate (131), a second vertical lower rib plate (132) and a horizontal lower rib plate (133), wherein the first vertical lower rib plate (131) is arranged on the bottom surface of the horizontal lower rib plate (133) close to the side enclosure outer plate (11), the second vertical lower rib plate (132) is arranged on the top surface of the horizontal lower rib plate (133) away from the side enclosure outer plate (11), and the side surface of the second vertical lower rib plate (132) away from the side enclosure outer plate (11) is connected to the floor (21); The side enclosure reinforcement rib (14) comprises a reinforcement arch plate (141) and two reinforcement lap plates (142); the reinforcement arch plate (141) is arched in a direction away from the side enclosure outer plate (11); the reinforcement arch plate (141) and the side enclosure outer plate (11) enclose a second cavity (143); the two reinforcement lap plates (142) are respectively arranged on both sides of the reinforcement arch plate (141) along the front-rear direction and connected to the reinforcement arch plate (141); the side surfaces of the reinforcement lap plates (142) are connected to the side enclosure outer plate (11); the reinforcement lap plates (142) are overlapped on the arched middle rib plate (151) and the On the overlapping middle rib plate (152), and connected to the arched middle rib plate (151) and the overlapping middle rib plate (152), the top surface of the reinforcing lap plate (142) of the side enclosure reinforcement rib (14) located above is connected to the second extended upper rib plate (124), the second cavity (143) of the side enclosure reinforcement rib (14) is connected to the first cavity (126), the bottom surface of the side enclosure reinforcement rib (14) located below is connected to the top surface of the horizontal lower rib plate (133), and the side surface of the side enclosure reinforcement rib (14) is connected to the side surface of the second vertical lower rib plate (132) close to the side enclosure outer plate (11).

3. The vehicle body according to claim 2, characterized in that: The overlapped middle rib plate (152) and the side outer plate (11) located at the top are connected by shock-absorbing adhesive, and the overlapped middle rib plate (152) and the side outer plate (11) located at the bottom are connected by welding; The side surface of the first overlapping upper rib plate (121) is connected to the side outer panel (11) by means of shock-absorbing adhesive, and the second overlapping upper rib plate (122), the side outer panel (11) and the top cover outer panel (31) are connected by welding; The top surface of the horizontal lower rib plate (133) is welded to the bottom surface of the side enclosure reinforcement rib (14) located below, and the side surface of the second vertical lower rib plate (132) is welded to the floor (21); The reinforcing lap plate (142) and the side outer panel (11) are connected by shock-absorbing adhesive, and the reinforcing lap plate (142) is welded to the arched middle rib plate (151) and the overlapping middle rib plate (152). The top surface of the reinforcing lap plate (142) of the side enclosure reinforcing rib (14) located above is welded to the second extended upper rib plate (124), and the bottom surface of the side enclosure reinforcing rib (14) located below is welded to the top surface of the horizontal lower rib plate (133), and the side surface of the side enclosure reinforcing rib (14) is welded to the side surface of the second vertical lower rib plate (132) close to the side outer panel (11).

4. The vehicle body according to claim 2, characterized in that: The side enclosure assembly (1) further comprises a wheel housing connecting rib (16), wherein the wheel housing connecting rib (16) is arranged on a side of the side enclosure outer panel (11) relative to another side enclosure assembly (1), the wheel housing connecting rib (16) is located below the side enclosure middle rib (15), the top end of the wheel housing connecting rib (16) is connected to the side enclosure middle rib (15), and the wheel housing connecting rib (16) is connected to the side enclosure outer panel (11) relative to the side of the side enclosure outer panel (11); The side enclosure assembly (1) further comprises a side enclosure lap plate (17); a wheel house notch (111) is provided on the bottom surface of the side enclosure outer plate (11) corresponding to the wheel house connecting rib (16); the side enclosure lap plate (17) is arranged along the wheel house notch (111) and extends toward the other side enclosure assembly (1); The vehicle body also includes two wheel cover assemblies (4) corresponding to the side enclosure assemblies (1) one by one, the wheel cover assemblies (4) are arranged corresponding to the wheel cover notch (111), the wheel cover assembly (4) includes a wheel cover inner plate (41) and a wheel cover outer plate (42), the wheel cover inner plate (41) includes a wheel cover inner lap plate (411) and a wheel cover inner extension plate (412) connected in sequence, the wheel cover outer plate (42) includes a first wheel cover outer lap plate (421), a first wheel cover outer extension plate (423), a second wheel cover outer extension plate (424) and a second wheel cover outer lap plate (422) connected in sequence, the wheel cover inner lap plate (411), the first wheel cover outer extension plate (423), the second wheel cover outer extension plate (424) and the second wheel cover outer lap plate (422) connected in sequence A wheel arch outer lap plate (421) overlaps and is connected to the wheel arch connecting rib (16); the wheel arch inner extension plate (412) extends obliquely downward in a direction away from the side outer panel (11); the wheel arch inner extension plate (412) is connected to the floor (21); the first wheel arch outer extension plate (423) extends in a direction close to the side outer panel (11); the second wheel arch outer extension plate (424) extends downward; the second wheel arch outer lap plate (422) extends in a direction away from the side outer panel (11); the bottom surface of the second wheel arch outer lap plate (422) is connected to the bottom surface of the side outer lap plate (17).

5. The vehicle body according to claim 4, characterized in that: The vehicle further comprises a plurality of sill assemblies (5), wherein two of the sill assemblies (5) are respectively arranged on both sides of the wheel cover assembly (4) in the front-rear direction, the sill assembly (5) comprises a sill inner plate (51) and a wheel cover connecting plate (52), the sill inner plate (51) being arranged on a side of the side enclosure outer plate (11) facing the other side enclosure assembly (1), the sill inner plate (51) and the side enclosure outer plate (11) enclosing a third cavity (53), and the wheel cover connecting plate (52) being arranged in the third cavity (53). Inside, the top of the rocker inner panel (51), the top of the wheel house connecting plate (52), the reinforcing arch plate (141) and the floor (21) are overlapped and connected, the top of the rocker inner panel (51), the top of the wheel house connecting plate (52) and the bottom of the side outer panel (11) are overlapped and connected, and one side of the rocker inner panel (51) along the front-to-back direction, one side of the wheel house connecting plate (52) along the front-to-back direction and the second wheel house outer extension plate (424) are overlapped and connected.

6. The vehicle body according to claim 1, characterized in that: The side panel assembly (1) further comprises a B-pillar panel assembly (18), two side panel connecting upper ribs (12) and two side panel connecting lower ribs (13); the B-pillar panel assembly (18) is arranged on the side of the side panel outer plate (11) relative to the other side panel assembly (1); the two side panel connecting upper ribs (12) are respectively arranged on both sides of the top of the B-pillar panel assembly (18) along the front-rear direction; and the two side panel connecting lower ribs (13) are respectively arranged on both sides of the bottom of the B-pillar panel assembly (18) along the front-rear direction; The B-pillar panel assembly (18) comprises a B-pillar inner panel (181) and a B-pillar reinforcement panel (182), the B-pillar inner panel (181) and the side panel outer panel (11) enclose a fourth cavity (183), and the B-pillar reinforcement panel (182) is disposed in the fourth cavity (183); The B-pillar inner plate (181) comprises a B-pillar inner main plate (1811), two B-pillar inner upper connecting plates (1812) and two B-pillar inner lower connecting plates (1813), wherein the two B-pillar inner upper connecting plates (1812) are respectively arranged on two side surfaces of the top of the B-pillar inner main plate (1811) relative to the front-rear direction, and the two B-pillar inner lower connecting plates (1813) are respectively arranged on two side surfaces of the bottom of the B-pillar inner main plate (1811) relative to the front-rear direction; The B-pillar reinforcement plate (182) comprises a B-pillar reinforcement main plate (1821), two B-pillar reinforcement upper connecting plates (1822) and two B-pillar reinforcement lower connecting plates (1823), wherein the two B-pillar reinforcement upper connecting plates (1822) are respectively arranged on two side surfaces of the top of the B-pillar reinforcement main plate (1821) relative to the front-rear direction, and the two B-pillar reinforcement lower connecting plates (1823) are respectively arranged on two side surfaces of the bottom of the B-pillar reinforcement main plate (1821) relative to the front-rear direction; One side of the B-pillar inner main board (1811) along the front-to-back direction, one side of the B-pillar reinforcement main board (1821) along the front-to-back direction and the side enclosure outer panel (11) are overlapped and connected, the other side of the B-pillar inner main board (1811) along the front-to-back direction is overlapped and connected to the other side of the B-pillar reinforcement main board (1821) along the front-to-back direction, the top of the B-pillar inner main board (1811), the top of the B-pillar reinforcement main board (1821) and the top of the side enclosure outer panel (11) are overlapped and connected, the bottom of the B-pillar inner main board (1811), the bottom of the B-pillar reinforcement main board (1821) and the bottom of the side enclosure outer panel (11) are overlapped and connected, and the side enclosure middle rib ( The front end of 15) is connected to the side of the main board (1811) inside the B-pillar, the upper connecting plate (1812) inside the B-pillar, the upper connecting plate (1822) reinforced by the B-pillar and the upper connecting rib (12) of the side enclosure are in one-to-one correspondence, the upper connecting plate (1812) inside the B-pillar, the upper connecting plate (1822) reinforced by the B-pillar and the upper connecting rib (12) of the side enclosure are overlapped and connected, the lower connecting plate (1813) inside the B-pillar, the lower connecting plate (1823) reinforced by the B-pillar and the lower connecting rib (13) of the side enclosure are in one-to-one correspondence, the lower connecting plate (1813) inside the B-pillar, the lower connecting plate (1823) reinforced by the B-pillar and the lower connecting rib (13) of the side enclosure are overlapped and connected.

7. The vehicle body according to claim 1, characterized in that The side enclosure outer panel (11), one side of the top cover outer panel (31) along the left-right direction and one side of the top beam (32) along the left-right direction overlap and are connected at a first top connection; the side enclosure outer panel (11), the side enclosure connecting upper rib (12) and the top beam (32) overlap and are connected at a second top connection; the portion of the side enclosure outer panel (11) and the portion of the top beam (32) located between the first top connection and the second top connection form a fifth cavity (8).

8. The vehicle body according to claim 7, characterized in that: The invention also comprises a plurality of top connection bolts (6); the side outer panel (11), the top cover outer panel (31) and the top beam (32) are connected at a first top connection by welding; and the side outer panel (11), the side connection upper rib (12) and the top beam (32) are connected at a second top connection by a plurality of top connection bolts (6) arranged at intervals in the front-rear direction.

9. The vehicle body according to claim 1, characterized in that: The roof assembly (3) further comprises an upper rear beam (33) extending in the left-right direction, the upper rear beam (33) being arranged on the bottom surface of the rear portion of the roof outer plate (31), the upper rear beam (33) comprising a first rear beam outer plate (331) and a first rear beam inner plate (332), the first rear beam outer plate (331) and the first rear beam inner plate (332) being in an L-shaped structure, the first rear beam outer plate (331) and the first rear beam inner plate (332) enclosing a sixth cavity (333), the front portion of the first rear beam outer plate (331) being arranged and connected to the top portion of the first rear beam inner plate (332), and the rear portion of the first rear beam inner plate (332) being arranged and connected to the bottom portion of the first rear beam outer plate (331); The bottom assembly (2) further comprises a lower rear beam (23), the lower rear beam (23) being arranged on the bottom surface of the rear part of the floor (21), the lower rear beam (23) comprising a second rear beam reinforcement plate (231), a second rear beam inner plate (232) extending in the left-right direction, and a second rear beam outer plate (233), the second rear beam inner plate (232) and the second rear beam outer plate (233) being arranged in sequence from front to back, the floor (21) being covered on the top surfaces of the second rear beam outer plate (233) and the second rear beam inner plate (232), the floor (21), the second rear beam inner plate (232) and the second rear beam outer plate (233) ) are surrounded by a seventh cavity (234), the second rear beam reinforcement plate (231) is arranged in the seventh cavity (234), the bottom of the second rear beam outer plate (233) is laid on and connected to the bottom of the second rear beam inner plate (232), the second rear beam reinforcement plate (231) is respectively laid on and connected to the side surface of the second rear beam outer plate (233) relative to the second rear beam inner plate (232) and the side surface of the second rear beam inner plate (232) relative to the second rear beam outer plate (233), the top of the second rear beam inner plate (232) and the top of the second rear beam outer plate (233) are connected to the bottom surface of the floor (21); The side enclosure assembly (1) further comprises a D-pillar enclosure assembly (19), wherein the D-pillar enclosure assembly (19) is arranged on a side of the side enclosure outer panel (11) relative to another side enclosure assembly (1) and is located on one side of the upper rear beam (33) and the lower rear beam (23) in the left-right direction; The D-pillar panel assembly (19) comprises a D-pillar inner panel (191), a D-pillar reinforcement panel (192) and a D-pillar outer panel (193) which are arranged in sequence from the inside to the outside, the front of the top of the D-pillar outer panel (193) is connected to the rear of the side panel outer panel (11), and the top of the D-pillar outer panel (193) is connected to the side of the first rear beam outer panel (331) relative to the left and right directions relative to the side of the other side panel assembly (1); The D-pillar inner plate (191) comprises a D-pillar inner main plate (1911), a first upper connecting plate (1912) in the D-pillar and a second upper connecting plate (1913) in the D-pillar, wherein the first upper connecting plate (1912) in the D-pillar is arranged in front of the top of the D-pillar inner main plate (1911), the second upper connecting plate (1913) in the D-pillar is arranged on the side of the top of the D-pillar inner main plate (1911) relative to the other side enclosure component (1), the front part of the first upper connecting plate (1912) in the D-pillar is laid on and connected to the rear end of the side enclosure connecting upper rib (12), the second upper connecting plate (1913) in the D-pillar is laid on and connected to the end of the first rear beam inner plate (332) relative to the left and right directions, and the side of the D-pillar inner plate (191) is connected to the floor (21); The D-pillar reinforcement plate (192) is mounted on and connected to the D-pillar outer plate (193) and the D-pillar inner main plate (1911).

10. The vehicle body according to claim 9, characterized in that Also includes a plurality of bottom connecting bolts (7); The D-pillar reinforcement plate (192) comprises a D-pillar reinforcement main plate (1921), a D-pillar reinforcement first upper connecting plate (1922) and a D-pillar reinforcement second upper connecting plate (1923), wherein the D-pillar reinforcement first upper connecting plate (1922) is arranged in front of the top of the D-pillar reinforcement main plate (1921), and the D-pillar reinforcement second upper connecting plate (1923) is arranged on the side of the top of the D-pillar reinforcement main plate (1921) relative to the other side enclosure component (1); The D-pillar reinforcement main plate (1921) is laid on and connected to the D-pillar outer plate (193) and the D-pillar inner main plate (1911); the front portion of the D-pillar reinforcement first upper connecting plate (1922), the front portion of the D-pillar inner first upper connecting plate (1912) and the rear end of the side enclosure connecting upper rib (12) overlap and are connected; one end of the D-pillar reinforcement second upper connecting plate (1923) relative to the left and right directions, one end of the D-pillar inner second upper connecting plate (1913) relative to the left and right directions and one end of the first rear beam inner plate (332) relative to the left and right directions overlap and are connected; The front of the bottom of the D-pillar reinforcement main plate (1921), the rear of the top of the side outer plate (11) and the front of the bottom of the D-pillar inner main plate (1911) overlap and are connected, and the side of the bottom of the D-pillar reinforcement main plate (1921) relative to the left and right directions, the side of the D-pillar inner main plate (1911) relative to the left and right directions, the rear of the second rear beam reinforcement plate (231) and the side of the second rear beam outer plate (233) relative to the left and right directions overlap and are connected through a plurality of bottom connection bolts (7) arranged at intervals in the vertical direction.

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