Body-in-white structure

Abstract

The utility model relates to the technical field of automobiles, in particular to a body-in-white structure. The body-in-white structure comprises an air window upper cross beam assembly, a floor assembly, a right side wall assembly, a left side wall assembly, a rear wall assembly and a top cover assembly, and further comprises a right side wall flow guide cover, a left side wall flow guide cover, a floor expansion module, a right side wall expansion module, a left side wall expansion module and a top cover expansion module. The floor expansion module, the right side wall expansion module, the left side wall expansion module and the top cover expansion module can be spliced in the length direction of the body-in-white structure, the right side wall flow guide cover is arranged on the right side wall assembly, and the left side wall flow guide cover is arranged on the left side wall assembly. According to the vehicle body, the length of the vehicle body can be increased by splicing the multiple expansion modules, meanwhile, the right side wall fairing and the left side wall fairing are arranged on the two sides of the vehicle body, wind resistance of the vehicle can be reduced, energy consumption of the vehicle is reduced, and the running speed is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of automobiles, in particular to a body-in-white structure. Background Art

[0002] With the development of social economy and the improvement of user demand, spacious and comfortable cab space is becoming more and more popular among users. Many commercial vehicle brands have launched large sleeper and large space models as selling points. The body in white is the skeleton of the entire cab, and its size directly determines the space of the cab. A larger body in white facilitates the overall layout of the vehicle body, so it is urgent to develop a cab body in white with larger size and space.

[0003] In the prior art, the body-in-white structure of commercial vehicles mostly adopts a modular design, that is, the body-in-white is divided into modules such as the front panel, floor, side panel, rear panel, and roof. While keeping the module boundary conditions unchanged, each module is designed separately. By assembling the modules, it is easy to realize personalized customization of the body-in-white to meet the different needs of users. However, after the length of the body-in-white is extended, the volume of the vehicle increases, and the wind resistance of the vehicle increases during driving, resulting in increased energy consumption of the vehicle and reduced driving speed.

[0004] Therefore, there is an urgent need for a body-in-white structure to solve the above technical problems. Utility Model Content

[0005] The utility model aims to provide a body-in-white structure, which can reduce wind resistance while extending the body length.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] A body-in-white structure comprises: a windshield upper crossbeam assembly, a floor assembly, a right side surround assembly, a left side surround assembly, a rear surround assembly and a top cover assembly, wherein the windshield upper crossbeam assembly is connected to the top cover assembly, the two ends of the right side surround assembly and the left side surround assembly are respectively connected to the floor assembly and the top cover assembly, the floor assembly, the right side surround assembly, the left side surround assembly and the top cover assembly are all connected to the rear surround assembly, the body-in-white structure further comprises a right side surround air deflector, a left side surround air deflector, a floor expansion module, a right side surround expansion module, a left side surround expansion module and a top cover expansion module, the floor expansion module, the right side surround expansion module, the left side surround expansion module and the top cover expansion module can be spliced ​​along the length direction of the body-in-white structure, the right side surround air deflector is arranged on the right side surround assembly, and the left side surround air deflector is arranged on the left side surround assembly.

[0008] As a preferred technical solution for the above-mentioned body-in-white structure, the floor extension module includes a left floor rear panel, a middle floor rear panel and a right floor rear panel, the left floor rear panel and the right floor rear panel are respectively connected to both sides of the middle floor rear panel, and the two ends of the left floor rear panel, the middle floor rear panel and the right floor rear panel are respectively connected to the floor assembly and the rear enclosure assembly.

[0009] As an optimal technical solution for the above-mentioned body-in-white structure, the right side enclosure extension module includes a right side enclosure rear outer panel and a right side enclosure rear inner panel, the right side enclosure rear outer panel is connected to the right side enclosure rear inner panel, the two ends of the right side enclosure rear outer panel and the right side enclosure rear inner panel are respectively connected to the right side enclosure assembly and the rear enclosure assembly, and the bottoms of the right side enclosure rear outer panel and the right side enclosure rear inner panel are both connected to the right floor rear panel, and the right side enclosure air deflector is arranged on the right side enclosure rear outer panel.

[0010] As a preferred technical solution for the above-mentioned body-in-white structure, the left side enclosure extension module includes a left side enclosure rear outer panel and a left side enclosure rear inner panel, the left side enclosure rear outer panel is connected to the left side enclosure rear inner panel, the two ends of the left side enclosure rear outer panel and the left side enclosure rear inner panel are respectively connected to the left side enclosure assembly and the rear enclosure assembly, and the bottoms of the left side enclosure rear outer panel and the left side enclosure rear inner panel are both connected to the left floor rear panel, and the left side enclosure air deflector is arranged on the left side enclosure rear outer panel.

[0011] As a preferred technical solution for the above-mentioned body-in-white structure, the top cover extension module includes a left rear top cover, a right rear top cover and a center rear top cover, the left rear top cover and the right rear top cover are respectively connected to the two sides of the center rear top cover, and the two ends of the left rear top cover, the right rear top cover and the center rear top cover are respectively connected to the top cover assembly and the rear enclosure assembly.

[0012] As a preferred technical solution of the above-mentioned body-in-white structure, the body-in-white structure also includes a roof beam assembly and two extension beams, the roof beam assembly is connected to the roof assembly, and the two extension beams are respectively connected to both sides of the roof beam assembly.

[0013] As a preferred technical solution of the above-mentioned body-in-white structure, the body-in-white structure also includes a middle cross beam of the roof, a rear cross beam of the roof and two rear side cross beams of the roof, the two ends of the middle cross beam of the roof and the rear cross beam of the roof are respectively connected to the two extension beams, and the two rear side cross beams of the roof are respectively connected to the two extension beams.

[0014] As a preferred technical solution of the above-mentioned body-in-white structure, the body-in-white structure also includes a left bracket 27 and a right bracket, the right bracket is arranged between the right side air deflector and the right side enclosure assembly, and the left bracket 27 is arranged between the left side air deflector and the left side enclosure assembly.

[0015] As a preferred technical solution for the above-mentioned body-in-white structure, the right side expansion module and the left side expansion module are both provided with a plurality of reinforcing ribs.

[0016] As a preferred technical solution of the above-mentioned body-in-white structure, the rear enclosure assembly includes a rear enclosure outer panel and a rear enclosure inner panel, the rear enclosure outer panel is connected to the rear enclosure inner panel, and the rear enclosure outer panel is provided with an air intake passage.

[0017] Beneficial effects of the utility model:

[0018] The utility model provides a body-in-white structure. The body-in-white structure includes: a windshield upper crossbeam assembly, a floor assembly, a right side surround assembly, a left side surround assembly, a rear surround assembly and a top cover assembly. The windshield upper crossbeam assembly is connected to the top cover assembly. The two ends of the right side surround assembly and the left side surround assembly are respectively connected to the floor assembly and the top cover assembly. The floor assembly, the right side surround assembly, the left side surround assembly and the top cover assembly are all connected to the rear surround assembly. The body-in-white structure also includes a right side surround air deflector, a left side surround air deflector, a floor expansion module, a right side surround expansion module, a left side surround expansion module and a top cover expansion module. The floor expansion module, the right side surround expansion module, the left side surround expansion module and the top cover expansion module can be spliced ​​along the length direction of the body-in-white structure. The right side surround air deflector is arranged on the right side surround assembly, and the left side surround air deflector is arranged on the left side surround assembly. The body can increase the length of the body by splicing a plurality of expansion modules. At the same time, the right side surround air deflector and the left side surround air deflector are arranged on both sides of the body, which can reduce the wind resistance of the vehicle, reduce the energy consumption of the vehicle, and increase the driving speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0020] Figure 1 A schematic structural diagram of a body-in-white structure provided by an embodiment of the utility model;

[0021] Figure 2 A schematic diagram of the structure of the connection between the right side enclosure assembly and the right side enclosure fairing provided in an embodiment of the utility model;

[0022] Figure 3 A schematic diagram of the structure of the connection between the left side enclosure assembly and the left side enclosure air deflector provided in an embodiment of the utility model;

[0023] Figure 4 A schematic diagram of the structure of the floor assembly provided in the embodiment of the utility model Figure 1 ;

[0024] Figure 5 A schematic diagram of the structure of the floor assembly provided in the embodiment of the utility model Figure 2 ;

[0025] Figure 6 A schematic diagram of the structure of the connection between the floor reinforcement beam and the floor expansion module provided in the embodiment of the utility model Figure 1 ;

[0026] Figure 7 A schematic diagram of the structure of the connection between the floor reinforcement beam and the floor expansion module provided in the embodiment of the utility model Figure 2 ;

[0027] Figure 8 A schematic diagram of the structure of the right side panel assembly provided by an embodiment of the utility model;

[0028] Fig. 9 A schematic diagram of the structure of a left side panel assembly provided in an embodiment of the utility model;

[0029] Fig.10 A schematic diagram of the structure of a rear enclosure assembly provided in an embodiment of the utility model;

[0030] Fig.11 A schematic diagram of the structure of the top cover assembly provided in the embodiment of the utility model Figure 1 ;

[0031] Fig.12 A schematic diagram of the structure of the top cover assembly provided in the embodiment of the utility model Figure 2 ;

[0032] Fig.13 A schematic diagram of the structure of a roof beam assembly provided in an embodiment of the utility model;

[0033] Fig.14 A schematic diagram of the structure of the expansion beam provided in the embodiment of the utility model;

[0034] Fig.15 A schematic diagram of the structure of the top cover assembly and the top cover expansion module connected to each other according to an embodiment of the utility model Figure 1 ;

[0035] Fig.16 A schematic diagram of the structure of the top cover assembly and the top cover expansion module connected to each other according to an embodiment of the utility model Figure 2 ;

[0036] Fig.17 A side view of the connection between the left side enclosure assembly and the left side enclosure fairing provided in an embodiment of the utility model;

[0037] Fig.18 A side view of the connection between the right side enclosure assembly and the right side enclosure fairing provided by an embodiment of the utility model;

[0038] Fig.19 A schematic structural diagram of the left side rear inner panel provided in an embodiment of the utility model.

[0039] In the figure:

[0040] 1. Windshield upper beam assembly;

[0041] 2. Floor assembly; 201. Floor front crossbeam assembly; 202. Floor middle plate; 203. Left floor front plate; 204. Middle floor front plate; 205. Right floor front plate; 206. Floor reinforcement beam;

[0042] 3. Right side enclosure assembly; 31. Right side enclosure front outer panel; 32. Right side enclosure front inner panel;

[0043] 4. Left side panel assembly; 41. Left side panel front outer panel; 42. Left side panel front inner panel;

[0044] 5. Rear enclosure assembly; 51. Rear enclosure outer panel; 52. Rear enclosure inner panel;

[0045] 6. Top cover assembly; 61. Front top cover; 62. Left front side top cover; 63. Right front side top cover; 64. Middle front top cover; 65. Rear top cover;

[0046] 7. Right side air deflector; 8. Left side air deflector; 9. Left floor rear panel; 10. Middle floor rear panel; 11. Right floor rear panel; 12. Right side rear outer panel; 13. Right side rear inner panel; 14. Left side rear outer panel; 15. Left side rear inner panel; 16. Left rear side top cover; 17. Right rear side top cover; 18. Middle rear side top cover; 19. Extension beam; 20. Front longitudinal beam of top cover; 21. Front cross beam of top cover; 22. Middle reinforcement beam of top cover; 23. Middle cross beam of top cover; 24. Rear cross beam of top cover; 25. Rear cross beam of top cover; 26. Right bracket; 27. Left bracket. DETAILED DESCRIPTION

[0047] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0048] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0050] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0051] like Figure 1 As shown, the utility model provides a body-in-white structure. The body-in-white structure includes: a windshield upper crossbeam assembly 1, a floor assembly 2, a right side panel assembly 3, a left side panel assembly 4, a rear panel assembly 5 and a top cover assembly 6, wherein the windshield upper crossbeam assembly 1 is connected to the top cover assembly 6, the right side panel assembly 3 and the left side panel assembly 4 are respectively connected to the floor assembly 2 and the top cover assembly 6, and the floor assembly 2, the right side panel assembly 3, the left side panel assembly 4 and the top cover assembly 6 are all connected to the rear panel assembly 5.

[0052] Specifically, Figure 2 and Figure 3As shown, the body-in-white structure also includes a right side air deflector 7, a left side air deflector 8, a floor expansion module, a right side expansion module, a left side expansion module and a top cover expansion module. The floor expansion module, the right side expansion module, the left side expansion module and the top cover expansion module can be spliced ​​along the length direction of the body-in-white structure. The right side air deflector 7 is arranged on the right side assembly 3, and the left side air deflector 8 is arranged on the left side assembly 4. The body can increase the body length by splicing multiple expansion modules. At the same time, the right side air deflector 7 and the left side air deflector 8 are arranged on both sides of the body, which can reduce the wind resistance of the vehicle, reduce the energy consumption of the vehicle, and increase the driving speed.

[0053] Furthermore, there is a surface difference between the length extension module and the basic module of the cab, and the surface difference between the two is used for the installation of the right side air deflector 7 and the left side air deflector 8. It can be seen that after the white body after length expansion is installed with the right side air deflector 7 and the left side air deflector 8, the appearance and user perception of the entire cab will not be affected by the extension module, and the shape of the cab remains consistent; at the same time, the body structure retains the basic structure of the original white body, and the white body design carried out on this basis has a short design pattern cycle, low investment, and strong universality.

[0054] Alternatively, if Figures 4 to 7 As shown, the floor extension module includes a left floor rear panel 9, a middle floor rear panel 10 and a right floor rear panel 11. The left floor rear panel 9 and the right floor rear panel 11 are respectively connected to the two sides of the middle floor rear panel 10. The two ends of the left floor rear panel 9, the middle floor rear panel 10 and the right floor rear panel 11 are respectively connected to the floor assembly 2 and the rear enclosure assembly 5. Specifically, the floor assembly 2 includes a floor front cross beam assembly 201, a floor middle plate 202, a left floor front plate 203, a left floor rear plate 9, a middle floor front plate 204, a middle floor rear plate 10, a right floor front plate 205, a right floor rear plate 11 and a floor reinforcement beam 206. The left floor rear plate 9 is connected to the left floor front plate 203, the middle floor rear plate 10 is connected to the floor middle plate 202, the right floor rear plate 11 is connected to the right floor front plate 205, and the edge profile of one end of the floor extension module is the same as the edge profile of the floor assembly 2 to ensure the flatness of the connection; the edge profile of the other end of the floor extension module is the same as the edge profile of the rear enclosure assembly 5 to ensure the uniformity of the overlapping edge with the rear enclosure assembly 5; the floor reinforcement beam 206 is arranged on the floor middle plate 202, and is used to improve the pedaling stiffness of the floor assembly 2 after the length is extended, so as to ensure the overall modality of the body in white. Exemplarily, in this embodiment, four floor reinforcement beams 206 are provided, two floor reinforcement beams 206 are arranged at intervals in the middle floor plate 202, and the other two floor reinforcement beams 206 are arranged in the left floor rear plate 9 and the right floor rear plate 11 respectively. Of course, in some other embodiments, the number of floor reinforcement beams 206 is determined according to actual needs.

[0055] Furthermore, the floor reinforcement beam 206 is a "J"-shaped beam structure, and each floor reinforcement beam 206 is connected to the floor assembly 2 through two overlapping edges, the overlapping edge width is 25mm, and the overlapping edge length of the floor reinforcement beam 206 is the spacing between the longitudinal beam structures of the left and right floor assemblies 2; the overlapping edge length of the left and right floor reinforcement beams 206 is the distance between the longitudinal beam structures of the left and right floor assemblies 2 and the side perimeter boundary of the side floor. The overlapping edges are connected by spot welding, and the spacing between the welding points is 40mm-60mm, which ensures the reliability of the connection structure while ensuring the production cycle.

[0056] Alternatively, if Figure 8 As shown, the right side enclosure expansion module includes a right side enclosure rear outer panel 12 and a right side enclosure rear inner panel 13, the right side enclosure rear outer panel 12 is connected to the right side enclosure rear inner panel 13, the two ends of the right side enclosure rear outer panel 12 and the right side enclosure rear inner panel 13 are respectively connected to the right side enclosure assembly 3 and the rear enclosure assembly 5, and the bottoms of the right side enclosure rear outer panel 12 and the right side enclosure rear inner panel 13 are both connected to the right floor rear panel 11, and the right side enclosure air deflector 7 is arranged on the right side enclosure rear outer panel 12. Specifically, the right side enclosure assembly 3 includes a right side enclosure front outer panel 31 and a right side enclosure front inner panel 32, the right side enclosure rear outer panel 12 is connected to the right side enclosure front outer panel 31, the right side enclosure rear inner panel 13 is connected to the right side enclosure front inner panel 32, the right side enclosure front outer panel 31 is connected to the right side enclosure front inner panel 32, the distance between the right side enclosure rear outer panel 12 and the right side enclosure rear inner panel 13 is the same as the distance between the right side enclosure front outer panel 31 and the right side enclosure front inner panel 32, ensuring the flatness of the connection; the rear edge contour of the right side enclosure extension module is the same as the edge contour of the rear enclosure assembly 5, ensuring the uniformity of the overlapping edge with the rear enclosure assembly 5.

[0057] Alternatively, if Fig. 9 As shown, the left side enclosure extension module includes a left side enclosure rear outer panel 14 and a left side enclosure rear inner panel 15, the left side enclosure rear outer panel 14 is connected to the left side enclosure rear inner panel 15, the two ends of the left side enclosure rear outer panel 14 and the left side enclosure rear inner panel 15 are respectively connected to the left side enclosure assembly 4 and the rear enclosure assembly 5, and the bottoms of the left side enclosure rear outer panel 14 and the left side enclosure rear inner panel 15 are both connected to the left floor rear plate 9, and the left side enclosure air deflector 8 is arranged on the left side enclosure rear outer panel 14. Specifically, the left side enclosure assembly 4 includes a left side enclosure front outer panel 41 and a left side enclosure front inner panel 42, the left side enclosure front outer panel 41 and the left side enclosure front inner panel 42 are connected, the distance between the left side enclosure rear outer panel 14 and the left side enclosure rear inner panel 15 is the same as the distance between the left side enclosure front outer panel 41 and the left side enclosure front inner panel 42, so as to ensure the flatness of the connection; the rear edge contour of the left side enclosure extension module is the same as the edge contour of the rear enclosure assembly 5, so as to ensure the uniformity of the overlap edge with the rear enclosure assembly 5.

[0058] Alternatively, if Fig.10 As shown, the rear enclosure assembly 5 includes a rear enclosure outer panel 51 and a rear enclosure inner panel 52 . The rear enclosure outer panel 51 is connected to the rear enclosure inner panel 52 . The rear enclosure outer panel 51 is provided with an air intake passage to enhance the aesthetics of the rear enclosure assembly 5 .

[0059] Alternatively, if Fig.11 and Fig.12 As shown, the top cover extension module includes a left rear top cover 16, a right rear top cover 17 and a middle rear top cover 18, the left rear top cover 16 and the right rear top cover 17 are respectively connected to the two sides of the middle rear top cover 18, and the two ends of the left rear top cover 16, the right rear top cover 17 and the middle rear top cover 18 are respectively connected to the top cover assembly 6 and the rear enclosure assembly 5. Specifically, the top cover assembly 6 includes a front top cover 61, a left front top cover 62, a right front top cover 63, a middle front top cover 64 and a rear top cover 65, the left rear top cover 16 is connected to the left front top cover 62, the right rear top cover 17 is connected to the right front top cover 63, and the middle rear top cover 18 is connected to the middle front top cover 64, and the rear edge profile of the top cover extension module is the same as the edge profile of the rear enclosure assembly 5, so as to ensure the uniformity of the overlap edge with the rear enclosure assembly 5.

[0060] Alternatively, if Fig.13 As shown, the body-in-white structure also includes a roof beam assembly and two extension beams 19. The roof beam assembly is connected to the roof assembly 6, and the two extension beams 19 are respectively connected to the two sides of the roof beam assembly. Specifically, the extension beam 19 is the rear longitudinal beam of the roof, and the roof beam assembly includes the front longitudinal beam 20 of the roof, the front cross beam 21 of the roof, and the middle reinforcing beam 22 of the roof. The two extension beams 19 are respectively connected to the front longitudinal beams 20 of the roof on the left and right sides of the vehicle body to increase the length of the vehicle body.

[0061] Furthermore, the body-in-white structure also includes a roof middle cross beam 23, a roof rear cross beam 24 and two roof rear side cross beams 25. The two ends of the roof middle cross beam 23 and the roof rear cross beam 24 are respectively connected to the two extension beams 19, which can improve the stability of the body-in-white structure; the two roof rear side cross beams 25 are respectively connected to the two extension beams 19 and are arranged parallel to the roof front side cross beam 21 to ensure the overall modality of the body.

[0062] Furthermore, if Fig.14 As shown, the rear longitudinal beam of the roof needs to be redesigned as the length of the body-in-white is extended. The reinforcement beam is designed under the skin of the roof assembly 6 to transmit the force of the roof assembly 6 and improve the strength of the body-in-white. The rear cross beam 24 of the roof is a "J"-shaped beam structure. The lower surface of the rear longitudinal beam of the roof overlaps with the middle reinforcement beam 22 of the roof at position Ⅰ, the upper surface overlaps with the middle front roof 64 at position Ⅱ, the upper surface overlaps with the middle rear roof 18 at position Ⅲ, the rear surface overlaps with the rear roof 65 at position Ⅳ, and the rear surface overlaps with the rear roof 65 at position Ⅴ. The rear surface overlaps with the inner surface of the rear enclosure inner panel 52. Position VI does not contact with any sheet metal surface and is an overlapping avoidance part that avoids the overlapping surface of the middle front top cover 64 and the middle rear top cover 18. Position VII is a fixed bracket welded on the beam of the rear top cover 65, which is used to fix the top of the right side air deflector 7 and the top of the left side air deflector 8, thereby improving the aesthetics of the cab and reducing the drag coefficient. At the same time, butyl tape is pasted around the bolt holes to ensure the sealing of the top cover assembly 6.

[0063] Furthermore, if Fig.15 and Fig.16 As shown, the front upper surface of the middle front top cover 64 overlaps the front top cover 61, and the left and right upper surfaces of the middle front top cover 64 overlap the left front side top cover 62 and the right front side top cover 63 respectively. The lower surface of the middle front top cover 64 overlaps the upper surface of the rear top cover 65. The rear top cover 65 of the body-in-white after the length expansion is moved backward, and the top cover expansion module is arranged above the original overlapping edge. Specifically, the middle rear top cover 18 is first connected above the original overlapping edge, and there is a 5mm gap between the left front side top cover 62 and the middle rear top cover 18 to avoid overlapping. Then the left rear side top cover 16 and the right rear side top cover 17 are overlapped on both sides. There are only two layers of overlapping edges and three layers of overlapping edges on the overlapping edges, avoiding the existence of four layers of overlapping edges, thereby improving the feasibility of the process. The middle rear top cover 18 overlaps with the right rear side top cover 17 at two places. The rear part of the middle rear top cover 18 overlaps the upper part of the front part of the middle rear top cover 18 , and the right rear side top cover 17 overlaps the upper part of the middle rear top cover 18 .

[0064] Alternatively, if Fig.17 and Fig.18 As shown, the body-in-white structure also includes a left bracket 27 and a right bracket 26. The right bracket 26 is arranged between the right side enclosure air deflector 7 and the right side enclosure assembly 3, and the left bracket 27 is arranged between the left side enclosure air deflector 8 and the left side enclosure assembly 4. Specifically, three left brackets 27 are arranged on the left side of the vehicle body. The left bracket 27 is an "I"-shaped bracket. Three fixing points are designed on each left bracket 27. The three left brackets 27 are universal. One side of the left bracket 27 is connected to the left side enclosure rear inner panel 15 by spot welding, and the other side of the left bracket 27 is in contact with the left side enclosure rear outer panel 14. The fixed base of the left side enclosure air deflector 8 passes through the left side enclosure rear outer panel 14 and is connected to the left bracket 27 by bolts, so as to improve the aesthetics of the cab and reduce the wind resistance coefficient. Since the air intake grille of the air intake duct is designed at the rear of the right side enclosure, the width of the lower part of the right side enclosure rear inner panel 13 and the right side enclosure rear outer panel 12 is less than The width of the lower part of the left side rear inner panel 15 and the left side rear outer panel 14, three right brackets 26 are arranged on the right side of the vehicle body, the right bracket 26 is the same as the left bracket 27, the installation heights of the three right brackets 26 and the three left brackets 27 are arranged one by one, but two fixing points are designed on each right bracket 26, one side of the right bracket 26 is connected to the right side rear inner panel 13 by spot welding, and the other side of the right bracket 26 is in contact with the right side rear outer panel 12, the fixing base of the right side fairing 7 passes through the right side rear outer panel 12, and is connected to the right bracket 26 by bolts, so as to improve the aesthetics of the cab and reduce the drag coefficient.

[0065] Furthermore, there are two overlapping edges between one side of the right bracket 26 and the right rear inner plate 13, each overlapping edge is 140mm long and 20mm wide, connected by spot welding, and the welding point spacing is 40mm-60mm. Butyl tape is adhered to the overlapping surface of the other side of the right bracket 26, and the tape width is 16mm and the thickness is 2mm. It contacts the right rear outer plate 12 to prevent the wear of the sheet metal contact surface and play a role in vibration reduction and noise reduction. Compared with the direct design of reinforcing ribs on the sheet metal, this fixed structure has a lower protrusion on the right inner plate, reduces the difficulty of mold design, is more flexible in layout, and reduces the number of repeated mold openings. The opening direction of the right bracket 26 and the installation direction of the right side fairing 7 are both normal, which reduces manufacturing errors.

[0066] Alternatively, if Fig.19 As shown, the right side expansion module and the left side expansion module are both provided with a number of reinforcing ribs. Specifically, the left side rear inner panel 15 is designed with a plurality of transverse and vertical reinforcing ribs to ensure the modal state after the length of the white body is expanded, which is used for the transmission of the top force. The transverse reinforcing ribs are evenly distributed, which ensures the strength of the left side rear inner panel 15 and provides a fixing point for the interior and exterior decoration of the cab; the relative height difference between the two overlapping edges Ⅰ and Ⅱ of the left side rear inner panel 15 and each left bracket 27 is certain, so as to realize the versatility of the left bracket 27. The length of the overlapping edge is 240mm, the width is 20mm, and it is connected by spot welding, and the welding point spacing is 40mm-60mm. The outer surface at point III overlaps with the inner surface of the left side front inner panel 42, and the width of the overlapping edge is 30mm. The inner surface at point IV overlaps with the inner surface of the rear side inner panel 52, and the width of the overlapping edge is 30mm. The spacing between welding points on the overlapping edge is 40mm-60mm. The heights of the two overlapping surfaces in the left and right directions of the body-in-white are consistent, so that the length of the body-in-white can be extended without changing the existing structure.

[0067] In addition, the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention is described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. Body-in-white structure, including: The windshield upper crossbeam assembly (1), the floor assembly (2), the right side panel assembly (3), the left side panel assembly (4), the rear panel assembly (5) and the top cover assembly (6), wherein the windshield upper crossbeam assembly (1) is connected to the top cover assembly (6), the right side panel assembly (3) and the left side panel assembly (4) are respectively connected to the floor assembly (2) and the top cover assembly (6), and the floor assembly (2), the right side panel assembly (3), the left side panel assembly (4) and the top cover assembly (6) are all connected to the rear panel assembly (5). The vehicle body structure further comprises a right side air deflector (7), a left side air deflector (8), a floor expansion module, a right side expansion module, a left side expansion module and a top cover expansion module, wherein the floor expansion module, the right side expansion module, the left side expansion module and the top cover expansion module can be spliced ​​along the length direction of the vehicle body structure, the right side air deflector (7) is arranged on the right side air deflector assembly (3), and the left side air deflector (8) is arranged on the left side air deflector assembly (4).

2. The body-in-white structure according to claim 1, characterized in that: The floor extension module comprises a left floor rear panel (9), a middle floor rear panel (10) and a right floor rear panel (11); the left floor rear panel (9) and the right floor rear panel (11) are respectively connected to the two sides of the middle floor rear panel (10); and the two ends of the left floor rear panel (9), the middle floor rear panel (10) and the right floor rear panel (11) are respectively connected to the floor assembly (2) and the rear enclosure assembly (5).

3. The body-in-white structure according to claim 2, characterized in that: The right side enclosure expansion module comprises a right side enclosure rear outer panel (12) and a right side enclosure rear inner panel (13), wherein the right side enclosure rear outer panel (12) is connected to the right side enclosure rear inner panel (13), and the two ends of the right side enclosure rear outer panel (12) and the right side enclosure rear inner panel (13) are respectively connected to the right side enclosure assembly (3) and the rear enclosure assembly (5), and the bottoms of the right side enclosure rear outer panel (12) and the right side enclosure rear inner panel (13) are both connected to the right floor rear panel (11), and the right side enclosure air deflector (7) is arranged on the right side enclosure rear outer panel (12).

4. The body-in-white structure according to claim 2, characterized in that: The left side enclosure expansion module comprises a left side enclosure rear outer panel (14) and a left side enclosure rear inner panel (15), wherein the left side enclosure rear outer panel (14) is connected to the left side enclosure rear inner panel (15), and the two ends of the left side enclosure rear outer panel (14) and the left side enclosure rear inner panel (15) are respectively connected to the left side enclosure assembly (4) and the rear enclosure assembly (5), and the bottoms of the left side enclosure rear outer panel (14) and the left side enclosure rear inner panel (15) are both connected to the left floor rear panel (9), and the left side enclosure air deflector (8) is arranged on the left side enclosure rear outer panel (14).

5. The body-in-white structure according to claim 1, characterized in that: The top cover expansion module comprises a left rear top cover (16), a right rear top cover (17) and a middle rear top cover (18); the left rear top cover (16) and the right rear top cover (17) are respectively connected to the two sides of the middle rear top cover (18); and the two ends of the left rear top cover (16), the right rear top cover (17) and the middle rear top cover (18) are respectively connected to the top cover assembly (6) and the rear enclosure assembly (5).

6. The body-in-white structure according to claim 5, characterized in that: The body-in-white structure also includes a roof beam assembly and two extension beams (19), wherein the roof beam assembly is connected to the roof assembly (6), and the two extension beams (19) are respectively connected to two sides of the roof beam assembly.

7. The body-in-white structure according to claim 6, characterized in that: The body-in-white structure also includes a roof middle cross beam (23), a roof rear cross beam (24) and two roof rear side cross beams (25), the two ends of the roof middle cross beam (23) and the roof rear cross beam (24) are respectively connected to the two extension beams (19), and the two roof rear side cross beams (25) are respectively connected to the two extension beams (19).

8. The body-in-white structure according to any one of claims 1 to 7, characterized in that: The body-in-white structure further comprises a left bracket (27) and a right bracket (26), wherein the right bracket (26) is arranged between the right side air deflector (7) and the right side air deflector assembly (3), and the left bracket (27) is arranged between the left side air deflector (8) and the left side air deflector assembly (4).

9. The body-in-white structure according to any one of claims 1 to 7, characterized in that: The right side enclosure expansion module and the left side enclosure expansion module are both provided with a plurality of reinforcing ribs.

10. The body-in-white structure according to any one of claims 1 to 7, characterized in that: The rear enclosure assembly (5) comprises a rear enclosure outer panel (51) and a rear enclosure inner panel (52), wherein the rear enclosure outer panel (51) is connected to the rear enclosure inner panel (52), and the rear enclosure outer panel (51) is provided with an air intake passage.

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