Anti-rolling upper vehicle body structure of non-bearing type off-road vehicle

Abstract

The invention relates to an anti-rolling upper vehicle body structure of a non-bearing type off-road vehicle, which comprises a vehicle body side wall assembly comprising a column A, a column B, a column C and a column D; the automobile body top cover assembly comprises a top cover front cross beam assembly, a skylight reinforcing ring assembly, a top cover middle cross beam assembly and a top cover rear cross beam assembly; the vehicle body floor assembly comprises a front floor front cross beam, a front floor rear cross beam, a rear floor middle cross beam and a rear coaming assembly which are sequentially arranged from front to back; the top cover front cross beam assembly and the front floor front cross beam are fixedly connected with the A column and jointly define a first annular frame. The skylight reinforcing ring assembly and the front floor rear cross beam are fixedly connected with the B column and jointly define a second annular frame. And the top cover middle cross beam assembly and the rear floor middle cross beam are fixedly connected with the column C correspondingly and jointly define a third annular frame, the top cover rear cross beam assembly and the rear coaming assembly are fixedly connected with the column D correspondingly and jointly define a fourth annular frame, and the collision and rolling safety performance of the whole vehicle is improved.

Description

Technical Field

[0001] This application relates to the technical field of non-load-bearing vehicle bodies, and particularly to an upper body structure for anti-rollover of a non-load-bearing off-road vehicle. Background Art

[0002] During off-road driving, the vehicle faces complex and changeable road conditions, and rollover accidents occur frequently. For non-load-bearing off-road vehicles, since the body is separated from the frame and the frame bears the main load, its existing structure still has deficiencies in anti-rollover, which may lead to serious casualties and vehicle damage. The body strength requirements of off-road vehicles are usually higher to cope with complex and harsh off-road road conditions. The anti-rollover performance of off-road vehicles is an important indicator to ensure the safety of passengers. Summary of the Invention

[0003] The embodiments of this application provide an upper body structure for anti-rollover of a non-load-bearing off-road vehicle to solve the problem of insufficient strength in anti-rollover of the body structure of non-load-bearing off-road vehicles in related technologies.

[0004] The embodiments of this application provide an upper body structure for anti-rollover of a non-load-bearing off-road vehicle, including: The body side panel assembly, there are two groups of the body side panel assemblies and they are symmetrically arranged. The body side panel assembly is sequentially divided into an A-pillar, a B-pillar, a C-pillar, and a D-pillar from front to back; The body roof panel assembly, the body roof panel assembly is located at the top of the two groups of body side panel assemblies and is fixedly connected to each other. The body roof panel assembly includes a roof front crossbeam assembly, a skylight reinforcement ring assembly, a roof middle crossbeam assembly, and a roof rear crossbeam assembly arranged in sequence from front to back; The body floor assembly, the body floor assembly is located at the bottom of the two groups of body side panel assemblies and is fixedly connected to each other. The body floor assembly includes a front floor front crossbeam, a front floor rear crossbeam, a rear floor middle crossbeam, and a rear panel assembly arranged in sequence from front to back; The roof front crossbeam assembly and the front floor front crossbeam are respectively fixedly connected to the A-pillar and jointly enclose a first annular frame. The skylight reinforcement ring assembly and the front floor rear crossbeam are respectively fixedly connected to the B-pillar and jointly enclose a second annular frame; The roof middle crossbeam assembly and the rear floor middle crossbeam are respectively fixedly connected to the C-pillar and jointly enclose a third annular frame. The roof rear crossbeam assembly and the rear panel assembly are respectively fixedly connected to the D-pillar and jointly enclose a fourth annular frame.

[0005] In some embodiments, the vehicle body side wall assembly includes an outer side wall panel and an inner side wall panel. A front door opening hot stamping door ring located in the areas of the A-pillar and B-pillar is connected between the outer side wall panel and the inner side wall panel. The front door opening hot stamping door ring includes a B-pillar reinforcement plate, an upper A-pillar beam, a sill reinforcement plate, and an A-pillar vertical plate that are welded end to end and then hot pressed into shape. The thicknesses of the B-pillar reinforcement plate and the upper A-pillar beam are both greater than the thicknesses of the sill reinforcement plate and the A-pillar vertical plate. An integrally hot-pressed B-pillar patch plate is adhesively connected to the inner side of the B-pillar reinforcement plate, and the thickness of the B-pillar patch plate is greater than the thickness of the B-pillar reinforcement plate.

[0006] In some embodiments, the inner side wall panel includes an upper A-pillar inner panel. The upper A-pillar inner panel and the upper A-pillar beam are welded to each other to form a cavity structure. An A-pillar hot gas inflation tube beam is connected inside the cavity structure formed by the upper A-pillar inner panel and the upper A-pillar beam. The A-pillar hot gas inflation tube beam is welded to the upper A-pillar beam or the upper A-pillar inner panel, and a first connection bracket for supporting the A-pillar hot gas inflation tube beam is further connected to the upper A-pillar inner panel.

[0007] In some embodiments, the inner side wall panel includes a B-pillar inner panel. The B-pillar inner panel and the B-pillar reinforcement plate are welded to each other to form a cavity structure. A B-pillar inner panel reinforcement plate connected between the B-pillar inner panel and the B-pillar reinforcement plate is provided inside the cavity structure formed by the B-pillar inner panel and the B-pillar reinforcement plate, and the B-pillar inner panel reinforcement plate divides the cavity structure into a double-cavity structure.

[0008] In some embodiments, a C-pillar reinforcement plate located in the C-pillar area is connected between the outer side wall panel and the inner side wall panel. The inner side wall panel includes a CD-pillar inner panel that is welded to the C-pillar reinforcement plate to form a cavity structure. An upper C-pillar hot gas inflation tube beam and a lower C-pillar hot gas inflation tube beam are provided inside the cavity structure formed by the C-pillar reinforcement plate and the CD-pillar inner panel, and the upper C-pillar hot gas inflation tube beam and the lower C-pillar hot gas inflation tube beam are welded to each other through a C-pillar intermediate connection tube beam. The upper C-pillar hot gas inflation tube beam, the lower C-pillar hot gas inflation tube beam, and the C-pillar intermediate connection tube beam are all welded to the C-pillar reinforcement plate, and a CD-pillar inner panel reinforcement plate located inside the cavity structure formed by the C-pillar reinforcement plate and the CD-pillar inner panel is connected to the CD-pillar inner panel.

[0009] In some embodiments, a D-pillar reinforcement plate is connected to the CD-pillar inner panel in the D-pillar area. A rear water trough bracket is connected between the D-pillar reinforcement plate and the outer side wall panel, and the D-pillar reinforcement plate, the outer side wall panel, and the rear water trough bracket are connected to each other to form an outer cavity structure. Inside the outer cavity structure formed by the connection of the D-pillar reinforcement plate, the outer side panel, and the rear gutter bracket, a D-pillar inner support plate is connected. A D-pillar inner support plate reinforcement plate is connected to the D-pillar inner support plate, and the D-pillar inner support plate and the D-pillar inner support plate reinforcement plate together form an inner cavity structure.

[0010] In some embodiments: The front roof crossmember assembly includes a front roof crossmember and an outer front roof crossmember panel. The front roof crossmember and the outer front roof crossmember panel are welded to each other and form a cavity structure inside. The front roof crossmember is made of hot-formed steel material, and the outer front roof crossmember panel is made of high-strength steel plate material; The outer side panel assembly is provided with a front roof crossmember connecting plate for connecting with the front roof crossmember assembly. The two ends of the front roof crossmember assembly are fixedly connected to the front roof crossmember connecting plate by welding and / or bolts.

[0011] In some embodiments: The sunroof reinforcement ring assembly includes a front sunroof reinforcement ring, a left sunroof reinforcement ring, a rear sunroof reinforcement ring, and a right sunroof reinforcement ring that are connected end to end in sequence. The front sunroof reinforcement ring, the left sunroof reinforcement ring, the rear sunroof reinforcement ring, and the right sunroof reinforcement ring are all formed by stamping high-strength steel plates; The front end of the sunroof reinforcement ring assembly is connected to the front roof crossmember assembly by spot welding and / or bolts, and the rear end of the sunroof reinforcement ring assembly is connected to the middle roof crossmember assembly by spot welding and / or bolts; The outer side panel assembly is provided with a front sunroof reinforcement ring connecting plate that is connected to the left and right sides of the middle part of the sunroof reinforcement ring assembly by spot welding and / or bolts, and a rear sunroof reinforcement ring connecting plate that is connected to both sides of the middle roof crossmember assembly by spot welding and / or bolts.

[0012] In some embodiments: The rear roof crossmember assembly includes a rear roof crossmember and an outer rear roof crossmember panel. The rear roof crossmember and the outer rear roof crossmember panel are welded to each other and form a cavity structure inside. The rear roof crossmember is made of hot-formed steel material, and the outer rear roof crossmember panel is made of high-strength steel plate material; The outer side panel assembly is provided with a D-pillar reinforcement plate for connecting with the rear roof crossmember assembly. The two ends of the rear roof crossmember assembly are fixedly connected to the D-pillar reinforcement plate by welding and / or bolts.

[0013] In some embodiments: The vehicle body roof assembly further includes a roof outer panel, and the roof outer panel covers the tops of the front roof crossmember assembly, the sunroof reinforcement ring assembly, the middle roof crossmember assembly, and the rear roof crossmember assembly and is welded to each other.

[0014] The beneficial effects brought by the technical solution provided by this application include: The embodiment of the present application provides an upper body structure for a non - load - bearing off - road vehicle to prevent rollover. Since the upper body structure for a non - load - bearing off - road vehicle to prevent rollover in the present application is provided with a body side - wall assembly, there are two sets of the body side - wall assemblies which are symmetrically arranged. The body side - wall assembly is sequentially divided into an A - pillar, a B - pillar, a C - pillar and a D - pillar from front to back; a body roof assembly, which is located at the top of the two sets of body side - wall assemblies and is fixedly connected to each other. The body roof assembly includes a roof front cross - beam assembly, a skylight reinforcement ring assembly, a roof middle cross - beam assembly and a roof rear cross - beam assembly arranged sequentially from front to back; a body floor assembly, which is located at the bottom of the two sets of body side - wall assemblies and is fixedly connected to each other. The body floor assembly includes a front floor front cross - beam, a front floor rear cross - beam, a rear floor middle cross - beam and a rear panel assembly arranged sequentially from front to back; the roof front cross - beam assembly and the front floor front cross - beam are respectively fixedly connected to the A - pillar and jointly form a first annular frame, the skylight reinforcement ring assembly and the front floor rear cross - beam are respectively fixedly connected to the B - pillar and jointly form a second annular frame; the roof middle cross - beam assembly and the rear floor middle cross - beam are respectively fixedly connected to the C - pillar and jointly form a third annular frame, and the roof rear cross - beam assembly and the rear panel assembly are respectively fixedly connected to the D - pillar and jointly form a fourth annular frame.

[0015] Therefore, the upper body structure for a non - load - bearing off - road vehicle to prevent rollover in the present application is provided with a roof front cross - beam assembly, a skylight reinforcement ring assembly, a roof middle cross - beam assembly and a roof rear cross - beam assembly which are respectively connected to the A - pillar, B - pillar, C - pillar and D - pillar on the body roof assembly, and a front floor front cross - beam, a front floor rear cross - beam, a rear floor middle cross - beam and a rear panel assembly which are respectively connected to the A - pillar, B - pillar, C - pillar and D - pillar on the body floor assembly. The roof front cross - beam assembly and the front floor front cross - beam are respectively fixedly connected to the A - pillar and jointly form a first annular frame, the skylight reinforcement ring assembly and the front floor rear cross - beam are respectively fixedly connected to the B - pillar and jointly form a second annular frame; the roof middle cross - beam assembly and the rear floor middle cross - beam are respectively fixedly connected to the C - pillar and jointly form a third annular frame, and the roof rear cross - beam assembly and the rear panel assembly are respectively fixedly connected to the D - pillar and jointly form a fourth annular frame. The first annular frame, the second annular frame, the third annular frame and the fourth annular frame form a good force - transmission path for the upper body structure, significantly improve the anti - deformation ability of the vehicle in a rollover accident, enhance the structural strength of the upper body structure, and improve the collision and rollover safety performance of the whole vehicle. Brief Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following - described drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0017] Figure 1 Schematic structural diagram of an embodiment of the present application; Figure 2 Exploded structural view of an embodiment of the present application without the body floor assembly; Figure 3 Schematic structural diagram of the hot - formed door ring in the front door opening and the hot - gas - inflated tube beam of the A - pillar in an embodiment of the present application; Figure 4 Schematic structural diagram of the body side - wall assembly and the body roof assembly in an embodiment of the present application; Figure 5 For an embodiment of the present application Figure 4 Cross - sectional view along the D - D direction in; Figure 6 For an embodiment of the present application Figure 4 Cross - sectional view along the E - E direction in; Figure 7 For an embodiment of the present application Figure 4 Cross - sectional view along the F - F direction in; Figure 8 For an embodiment of the present application Figure 4 Cross - sectional view along the G - G direction in; Figure 9 For an embodiment of the present application Figure 4 Cross - sectional view along the H - H direction in; Figure 10 For an embodiment of the present application Figure 4 Cross - sectional view along the I - I direction in; Figure 11 For an embodiment of the present application Figure 4 Cross - sectional view along the J - J direction in; Figure 12 Schematic structural diagram of the upper - segment hot - gas - inflated tube beam of the C - pillar, the lower - segment hot - gas - inflated tube beam of the C - pillar, the intermediate connecting tube beam of the C - pillar and the C - pillar reinforcement plate in an embodiment of the present application; Figure 13 Partial schematic structural diagram of the inner panel of the upper A - pillar and the hot - formed door ring in the front door opening in an embodiment of the present application; Figure 14 For an embodiment of the present application Figure 13 Cross - sectional view along the K - K direction in; Figure 15 Partial schematic structural diagram of the body side - wall assembly and the body roof assembly in an embodiment of the present application; Figure 16 Partial schematic structural diagram of the front roof cross - beam assembly, the skylight reinforcement ring assembly and the body side - wall assembly in an embodiment of the present application; Figure 17 Partial schematic structural diagram of the skylight reinforcement ring assembly, the middle roof cross - beam assembly and the body side - wall assembly in an embodiment of the present application; Figure 18Schematic diagram of the skylight reinforcement ring assembly and the roof middle crossbeam assembly according to an embodiment of the present application; Figure 19 According to an embodiment of the present application Figure 16 Cross-sectional view along the A-A direction in the embodiment; Figure 20 According to an embodiment of the present application Figure 16 Cross-sectional view along the B-B direction in the embodiment; Figure 21 According to an embodiment of the present application Figure 16 Cross-sectional view along the C-C direction in the embodiment.

[0018] Reference numerals: 1. Outer side panel; 2. Hot-formed door ring for front door opening; 3. Hot gas expansion tube beam for A-pillar; 4. First connecting bracket; 5. Upper inner panel of A-pillar; 6. Connecting plate for front roof crossbeam; 7. Inner panel of B-pillar; 8. Reinforcement plate for inner panel of B-pillar; 9. Reinforcement plate for C-pillar; 10. Hot gas expansion tube beam for upper section of C-pillar; 11. Hot gas expansion tube beam for lower section of C-pillar; 12. Inner panel of CD-pillar; 13. Inner support plate for D-pillar; 14. Reinforcement plate for inner support plate for D-pillar; 15. Reinforcement plate for D-pillar; 16. Rear water trough bracket; 17. Outer roof panel; 18. Outer panel of front roof crossbeam; 19. Front roof crossbeam; 20. Skylight reinforcement ring assembly; 21. Front connecting plate of skylight reinforcement ring; 22. Rear connecting plate of skylight reinforcement ring; 23. Rear roof crossbeam; 24. Outer panel of rear roof crossbeam; 25. Bolt; 26. Nut; 27. Lower inner panel of A-pillar; 28. A-pillar; 29. B-pillar; 30. C-pillar; 31. D-pillar; 32. Front roof crossbeam assembly; 33. Roof middle crossbeam assembly; 34. Rear roof crossbeam assembly; 35. Front floor crossbeam; 36. Rear crossbeam of front floor; 37. Middle crossbeam of rear floor; 38. Rear bulkhead assembly; 39. Reinforcement plate for B-pillar; 40. Upper side beam of A-pillar; 41. Threshold reinforcement plate; 42. Vertical plate of A-pillar; 43. Patch plate for B-pillar; 44. Intermediate connecting tube beam for C-pillar; 45. Second connecting bracket; 46. Third connecting bracket; 47. Door hinge reinforcement plate; 48. Reinforcement plate for inner panel of CD-pillar. Detailed implementation manners

[0019] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0020] An upper body structure for rollover prevention of a non - load - bearing off - road vehicle is provided in an embodiment of the present application, which can solve the problem of insufficient strength of the body structure of a non - load - bearing off - road vehicle in terms of rollover resistance in the related art.

[0021] See Figure 1 As shown, an upper body structure for rollover prevention of a non - load - bearing off - road vehicle is provided in an embodiment of the present application, including: The body side - wall assembly, with two groups of the body side - wall assembly symmetrically arranged. One group is the left body side - wall assembly, and the other group is the right body side - wall assembly. The left body side - wall assembly and the right body side - wall assembly are successively divided into an A - pillar 28, a B - pillar 29, a C - pillar 30, and a D - pillar 31 from front to back. A front door opening is formed between the A - pillar 28 and the B - pillar 29, a rear door opening is formed between the B - pillar 29 and the C - pillar 30, and a corner window opening is formed between the C - pillar 30 and the D - pillar 31.

[0022] The body roof assembly, which is located on the top of the left body side - wall assembly and the right body side - wall assembly and is fixedly connected to each other. The body roof assembly includes a roof front cross - beam assembly 32, a skylight reinforcement ring assembly 20, a roof middle cross - beam assembly 33, and a roof rear cross - beam assembly 34 arranged successively from front to back. The top of the roof front cross - beam assembly 32, the skylight reinforcement ring assembly 20, the roof middle cross - beam assembly 33, and the roof rear cross - beam assembly 34 is covered with a roof outer panel 17 and they are welded to each other.

[0023] The body floor assembly, which is located at the bottom of the left body side - wall assembly and the right body side - wall assembly and is fixedly connected to each other. The body floor assembly includes a front floor front cross - beam 35, a front floor rear cross - beam 36, a rear floor middle cross - beam 37, and a rear panel assembly 38 arranged successively from front to back. The top of the front floor front cross - beam 35, the front floor rear cross - beam 36, the rear floor middle cross - beam 37, and the rear panel assembly 38 is covered with a floor skin.

[0024] The roof front cross - beam assembly 32 and the front floor front cross - beam 35 are respectively fixedly connected to the A - pillar 28 and jointly form a first annular frame. The skylight reinforcement ring assembly 20 and the front floor rear cross - beam 36 are respectively fixedly connected to the B - pillar 29 and jointly form a second annular frame. The roof middle cross - beam assembly 33 and the rear floor middle cross - beam 37 are respectively fixedly connected to the C - pillar 30 and jointly form a third annular frame. The roof rear cross - beam assembly 34 and the rear panel assembly 38 are respectively fixedly connected to the D - pillar 31 and jointly form a fourth annular frame.

[0025] In the non - load - bearing off - road vehicle anti - roll upper body structure according to the embodiments of the present application, a roof front cross - member assembly 32, a skylight reinforcement ring assembly 20, a roof middle cross - member assembly 33, and a roof rear cross - member assembly 34 are provided on the body roof assembly, which are respectively connected to the A - pillar 28, B - pillar 29, C - pillar 30, and D - pillar 31. On the body floor assembly, a front floor front cross - beam 35, a front floor rear cross - beam 36, a rear floor middle cross - beam 37, and a rear panel assembly 38 are provided, which are respectively connected to the A - pillar 28, B - pillar 29, C - pillar 30, and D - pillar 31.

[0026] The roof front cross - member assembly 32 and the front floor front cross - beam 35 are respectively fixedly connected to the A - pillar 28 and jointly form a first annular frame. The skylight reinforcement ring assembly 20 and the front floor rear cross - beam 36 are respectively fixedly connected to the B - pillar 29 and jointly form a second annular frame. The roof middle cross - member assembly 33 and the rear floor middle cross - beam 37 are respectively fixedly connected to the C - pillar 30 and jointly form a third annular frame. The roof rear cross - member assembly 34 and the rear panel assembly 38 are respectively fixedly connected to the D - pillar 31 and jointly form a fourth annular frame.

[0027] The first annular frame, second annular frame, third annular frame, and fourth annular frame formed by the non - load - bearing off - road vehicle anti - roll upper body structure according to the embodiments of the present application form a good force - transmission path for the upper body structure, significantly improving the anti - deformation ability of the vehicle in a roll - over accident, enhancing the structural strength of the upper body structure, and improving the collision and roll - over safety performance of the whole vehicle.

[0028] In some alternative embodiments: Refer to Figures 1 to 3 As shown, the embodiments of the present application provide a non - load - bearing off - road vehicle anti - roll upper body structure. The body side - wall assembly of this upper body structure includes an outer side - wall panel 1 and an inner side - wall panel. A front - door - opening hot - formed door ring 2 is connected between the outer side - wall panel 1 and the inner side - wall panel in the area of the A - pillar 28 and B - pillar 29. The front - door - opening hot - formed door ring 2 includes a B - pillar reinforcement plate 39, an A - pillar upper side beam 40, a sill reinforcement plate 41, and an A - pillar vertical plate 42, which are welded end - to - end and then hot - formed.

[0029] The thicknesses of both the B - pillar reinforcement plate 39 and the A - pillar upper side beam 40 are greater than the thicknesses of the sill reinforcement plate 41 and the A - pillar vertical plate 42. The thicknesses of the B - pillar reinforcement plate 39 and the A - pillar upper side beam 40 are preferably hot - formed steel plates with a thickness of 1.5 mm. The thicknesses of the sill reinforcement plate 41 and the A - pillar vertical plate 42 are preferably hot - formed steel plates with a thickness of 1.2 mm. In order to further increase the anti - roll performance of the B - pillar 29, a B - pillar patch plate 43 formed by integral hot - pressing is adhesively connected to the inner side of the B - pillar reinforcement plate 39. The thickness of the B - pillar patch plate 43 is greater than the thickness of the B - pillar reinforcement plate 39. The thickness of the B - pillar patch plate 43 is preferably a hot - formed steel plate with a thickness of 1.8 mm. The B - pillar patch plate 43 is first connected to the B - pillar reinforcement plate 39 by spot welding and finally hot - formed.

[0030] In some alternative embodiments: Refer to Figure 2 , Figure 4 and Figure 5 As shown, the embodiment of the present application provides an upper body structure for a non - load - bearing off - road vehicle to prevent rollover. The inner side panel of the side wall of this upper body structure includes the upper inner panel 5 of the A - pillar. The upper inner panel 5 of the A - pillar is welded to the upper side beam 40 of the A - pillar to form a cavity structure. An A - pillar hot gas - inflation tube beam 3 is connected inside the cavity structure formed by the upper inner panel 5 of the A - pillar and the upper side beam 40 of the A - pillar. The A - pillar hot gas - inflation tube beam 3 is welded to the upper side beam 40 of the A - pillar or the upper inner panel 5 of the A - pillar. A first connection bracket 4 for supporting the A - pillar hot gas - inflation tube beam 3 is also connected to the upper inner panel 5 of the A - pillar.

[0031] In the embodiment of the present application, an A - pillar hot gas - inflation tube beam 3 is added inside the cavity structure formed by the upper inner panel 5 of the A - pillar and the upper side beam 40 of the A - pillar. The material of the A - pillar hot gas - inflation tube beam 3 is D1800HF AS(15 / 15) t1.6. The A - pillar hot gas - inflation tube beam 3 first pre - forms a regular tube, then seals both ends after heating, and injects high - pressure gas to form. Plug - weld holes are opened on the upper side beam 40 of the A - pillar, and the A - pillar hot gas - inflation tube beam 3 and the upper side beam 40 of the A - pillar are connected by CO2 shielded arc welding. The cross - section of the A - pillar hot gas - inflation tube beam 3 is an irregular quadrilateral, and the profile is designed according to the profile changes of the upper side beam 40 of the A - pillar and the upper inner panel 5 of the A - pillar. There are laser - cut positioning holes, interior trim panel, wiring harness, water pipe buckle avoidance holes, painting and electro - deposition holes, etc. on the A - pillar hot gas - inflation tube beam 3.

[0032] Refer to Figure 13 and Figure 14 As shown, the inner side panel of the side wall in the embodiment of the present application further includes the lower inner panel 27 of the A - pillar. The lower inner panel 27 of the A - pillar is welded to the sill reinforcement plate 41 and the A - pillar vertical plate 42 to jointly form a cavity structure. Inside the cavity formed by the mutual welding connection of the lower inner panel 27 of the A - pillar, the sill reinforcement plate 41 and the A - pillar vertical plate 42, a door hinge reinforcement plate 47 is provided on the inner side of the A - pillar vertical plate 42. The door hinge reinforcement plate 47 is welded to the A - pillar vertical plate 42 in a mutually - fitting manner, and the door hinge reinforcement plate 47 is used to enhance the structural strength of the A - pillar vertical plate 42 for installing the vehicle door hinge.

[0033] The upper part of the A - pillar 28 in the embodiment of the present application is composed of the outer side panel 1 of the side wall, the upper inner panel 5 of the A - pillar, the hot - formed door ring 2 of the front door opening, and the A - pillar hot gas - inflation tube beam 3. Compared with the traditional body - in - white structure, the A - pillar hot gas - inflation tube beam 3 is added. Moreover, the upper inner panel 5 of the A - pillar, the hot - formed door ring 2 of the front door opening, and the A - pillar hot gas - inflation tube beam 3 all adopt hot - formed materials, which greatly improves the anti - deformation ability of the A - pillar 28 during rollover and can significantly reduce the deformation of the A - pillar 28. At the same time, the lower part of the A - pillar 28 is composed of the outer side panel 1 of the side wall, the lower inner panel 27 of the A - pillar, the hot - formed door ring 2 of the front door opening, and the door hinge reinforcement plate 47. Both the lower inner panel 27 of the A - pillar and the hot - formed door ring 2 of the front door opening adopt hot - formed materials.

[0034] In some alternative embodiments: Refer to Figure 2 、 Figure 4 and Figure 6 As shown, the embodiment of the present application provides an upper body structure for anti-rollover of a non-load-bearing off-road vehicle. The inner side panel of the side wall of the upper body structure includes an inner B-pillar panel 7, and the inner B-pillar panel 7 and a B-pillar reinforcement plate 39 are welded to each other to form a cavity structure. An inner B-pillar reinforcement plate 8 connected between the inner B-pillar panel 7 and the B-pillar reinforcement plate 39 is provided in the cavity structure formed by the inner B-pillar panel 7 and the B-pillar reinforcement plate 39, and the inner B-pillar reinforcement plate 8 divides the cavity structure into a double-cavity structure.

[0035] The B-pillar 29 in the embodiment of the present application is composed of an outer side panel 1, a hot-formed door ring 2 at the front door opening, an inner B-pillar panel 7, and an inner B-pillar reinforcement plate 8. A B-pillar patch plate 43 with a thickness of 1.8 mm is designed at the B-pillar reinforcement plate 39 of the hot-formed door ring 2 at the front door opening. At the same time, compared with the traditional B-pillar structure, the inner B-pillar reinforcement plate 8 is added, thus forming a B-pillar structure with a double cavity, greatly improving the strength and stiffness of the B-pillar 29.

[0036] In some alternative embodiments: Refer to Figure 2 、 Figure 4 、 Figure 9 and Figure 12 As shown, the embodiment of the present application provides an upper body structure for anti-rollover of a non-load-bearing off-road vehicle. A C-pillar reinforcement plate 9 is connected between the outer side panel 1 and the inner side panel of the upper body structure in the C-pillar area, and the inner side panel further includes a CD-pillar inner panel 12 that is welded to the C-pillar reinforcement plate 9 to form a cavity structure. A C-pillar upper hot gas inflation tube beam 10 and a C-pillar lower hot gas inflation tube beam 11 are provided in the cavity structure formed by the C-pillar reinforcement plate 9 and the CD-pillar inner panel 12, and the C-pillar upper hot gas inflation tube beam 10 and the C-pillar lower hot gas inflation tube beam 11 are welded and connected through a C-pillar intermediate connecting tube beam 44.

[0037] The upper end of the C-pillar upper hot gas inflation tube beam 10 is connected to the top of the C-pillar reinforcement plate 9 through a second connecting bracket 45, and the middle of the C-pillar lower hot gas inflation tube beam 11 is connected to the bottom of the C-pillar reinforcement plate 9 through a third connecting bracket 46. The C-pillar upper hot gas inflation tube beam 10, the C-pillar lower hot gas inflation tube beam 11, and the C-pillar intermediate connecting tube beam 44 are all welded to the C-pillar reinforcement plate 9, and a CD-pillar inner panel reinforcement plate 48 located in the cavity structure formed by the C-pillar reinforcement plate 9 and the CD-pillar inner panel 12 is connected to the CD-pillar inner panel 12.

[0038] The C-pillar 30 of the embodiment of the present application is composed of an outer side panel 1, a C-pillar reinforcement plate 9, and an inner CD-pillar panel 12. Compared with the traditional C-pillar structure of a body-in-white, a hot gas-expanded tube beam 10 in the upper part of the C-pillar, a hot gas-expanded tube beam 11 in the lower part of the C-pillar, and a middle connecting tube beam 44 of the C-pillar are further added in the cavity of the C-pillar 30. The hot gas-expanded tube beam 10 in the upper part of the C-pillar, the hot gas-expanded tube beam 11 in the lower part of the C-pillar, and the middle connecting tube beam 44 of the C-pillar are made of high-strength steel, first welded into a tube by high-frequency welding, and then formed by a tube bending process.

[0039] The upper end of the hot gas-expanded tube beam 10 in the upper part of the C-pillar is connected to a second connecting bracket 45 by CO2 shielded arc welding, and the middle and lower parts are connected to the C-pillar reinforcement plate 9 by CO2 shielded arc welding. The middle part of the hot gas-expanded tube beam 11 in the lower part of the C-pillar is connected to a third connecting bracket 46 by CO2 shielded arc welding. The upper end of the hot gas-expanded tube beam 11 in the lower part of the C-pillar is connected to the C-pillar reinforcement plate 9 by CO2 shielded arc welding, and the lower end is connected to the C-pillar reinforcement plate 9 by CO2 shielded arc welding.

[0040] Notches are cut at both ends of the middle connecting tube beam 44 of the C-pillar. The notches at both ends of the middle connecting tube beam 44 of the C-pillar connect the hot gas-expanded tube beam 10 in the upper part of the C-pillar and the hot gas-expanded tube beam 11 in the lower part of the C-pillar by CO2 shielded arc welding, playing a role in strengthening the strength and rigidity of the C-pillar 30, which can greatly improve the top compressive resistance and reduce the injury to the rear passengers during a rollover.

[0041] In some alternative embodiments: Refer to Figure 2 、 Figure 4 、 Figure 10 As shown, the embodiment of the present application provides an upper body structure for a non-load-bearing off-road vehicle to prevent rollover. An inner D-pillar reinforcement plate 15 in the D-pillar area is connected to the inner CD-pillar panel 12 of the upper body structure. A rear water trough bracket 16 is connected between the D-pillar reinforcement plate 15 and the outer side panel 1. The D-pillar reinforcement plate 15, the outer side panel 1, and the rear water trough bracket 16 are connected to each other to form an outer cavity structure. An inner D-pillar support plate 13 is connected inside the outer cavity structure formed by the D-pillar reinforcement plate 15, the outer side panel 1, and the rear water trough bracket 16 being connected to each other. A D-pillar inner support plate reinforcement plate 14 is connected to the inner D-pillar support plate 13. The inner D-pillar support plate 13 and the D-pillar inner support plate reinforcement plate 14 together form an inner cavity structure.

[0042] In order to increase the rollover prevention performance of the rear part of the vehicle in the embodiment of the present application, compared with the traditional D-pillar structure, an inner D-pillar support plate 13 and a D-pillar inner support plate reinforcement plate 14 are further added inside the outer cavity structure formed by the D-pillar reinforcement plate 15, the outer side panel 1, and the rear water trough bracket 16 being connected to each other, thus forming a double-cavity structure. The upper part of the inner D-pillar support plate 13 and the D-pillar inner support plate reinforcement plate 14 is connected to the D-pillar reinforcement plate 15, and the two sides are connected to the D-pillar reinforcement plate 15 from top to bottom. Its lower part is connected to the lower body assembly by two M8 bolts. Through the double-cavity D-pillar structure design, the rollover prevention ability of the rear part of the vehicle can be greatly improved, and the deformation of the rear part of the vehicle during a rollover can be reduced.

[0043] In some alternative embodiments: Refer to Figure 1 , Figure 2 , Figure 4 , Figure 7 As shown, the embodiment of the present application provides an upper body structure for a non-load-bearing off-road vehicle to prevent rollover. The front roof crossbeam assembly 32 of the upper body structure includes a front roof crossbeam 19 and an outer panel 18 of the front roof crossbeam. The front roof crossbeam 19 and the outer panel 18 of the front roof crossbeam are welded to each other and form a cavity structure inside. The front roof crossbeam 19 is made of hot-formed steel material, and the outer panel 18 of the front roof crossbeam is made of high-strength steel plate material.

[0044] Refer to Figure 15 , Figure 16 and Figure 19 As shown, on the inner panel 5 of the A-pillar of the outer panel assembly of the side wall, there is a front roof crossbeam connecting plate 6 connected to the front roof crossbeam assembly 32. Both ends of the front roof crossbeam assembly 32 are fixedly connected to the front roof crossbeam connecting plate 6 by welding and / or bolts. The front roof crossbeam 19 is made of hot-formed material, and it is designed with a ceiling mounting hole, a wire harness mounting hole, a sun visor fixing point, a front dome light mounting hole, a welding positioning hole, a painting process hole, etc. Both ends of the front roof crossbeam 19 are connected to the front roof crossbeam connecting plate 6 by spot welding and bolts 25. The rear part of the front roof crossbeam 19 is connected to the skylight reinforcement ring assembly 20 and the outer panel 17 of the roof by welding points.

[0045] The outer panel 18 of the front roof crossbeam is made of high-strength steel plate. The length of the outer panel 18 of the front roof crossbeam is longer than that of the front roof crossbeam 19. The extended parts at both ends of the outer panel 18 of the front roof crossbeam are welded to the upper side beam 40 of the A-pillar and the front roof crossbeam connecting plate 6. Through such a closed cavity design and connection method, the rollover prevention ability of the front part of the vehicle body can be greatly improved, the deformation of the front roof crossbeam assembly 32 can be reduced, and the injury to the occupants can be reduced.

[0046] The connection position between the front roof crossbeam 19 and the A-pillar 28 in the embodiment of the present application is fixedly connected through the front roof crossbeam connecting plate 6. The front roof crossbeam connecting plate 6 is made of hot-formed material with a thickness of 1.8 mm, and the overall structure is in a "V" shape. Both ends of the front roof crossbeam 19 are connected to the front roof crossbeam connecting plate 6 by welding points and bolts 25. The length of the outer panel 18 of the front roof crossbeam is longer than that of the front roof crossbeam 19, and the extended parts at both ends are welded to the upper side beam 40 of the A-pillar and the front roof crossbeam connecting plate 6. Such a structural design can greatly improve the strength and stiffness at the connection between the front roof crossbeam 19 and the A-pillar 28, and reduce the deformation at the connection during rollover.

[0047] In some alternative embodiments: Refer to Figure 2 , Figure 8 , Figures 15 to 18 , Figure 20 andFigure 21 As shown in the figure, an upper body structure for preventing rollover of a non-load-bearing off-road vehicle is provided in an embodiment of the present application. The sunroof reinforcement ring assembly 20 of the upper body structure includes a front sunroof reinforcement ring, a left sunroof reinforcement ring, a rear sunroof reinforcement ring, and a right sunroof reinforcement ring that are sequentially connected end to end. The front sunroof reinforcement ring, the left sunroof reinforcement ring, the rear sunroof reinforcement ring, and the right sunroof reinforcement ring are all formed by stamping high-strength steel plates. The sunroof reinforcement ring assembly 20 and the outer roof panel 17 are welded to each other to form an annular cavity structure. The front end of the sunroof reinforcement ring assembly 20 is connected to the front roof cross member assembly 32 by spot welding and / or bolts 25, and the rear end of the sunroof reinforcement ring assembly 20 is connected to the middle roof cross member assembly 33 by spot welding and / or bolts 25.

[0048] The outer side panel assembly is provided with a front sunroof reinforcement ring connecting plate 21 that is connected to the left and right sides of the middle part of the sunroof reinforcement ring assembly 20 by spot welding and / or bolts 25, and a rear sunroof reinforcement ring connecting plate 22 that is connected to both sides of the middle roof cross member assembly 33 by spot welding and / or bolts 25. The front part of the sunroof reinforcement ring assembly 20 is connected to the front roof cross member assembly 32 by spot welding and bolts 25, and two nuts 26 are welded to the left and right sides respectively to facilitate the connection between the front sunroof reinforcement ring connecting plate 21 and the upper part of the B-pillar 29. Such a design can greatly improve the strength and stiffness of the connection at the upper part of the B-pillar 29. The two sides of the rear end of the sunroof reinforcement ring assembly 20 are connected to the C-pillar 30.

[0049] See Figure 20 and Figure 21 As shown in the figure, at the connection between the sunroof reinforcement ring assembly 20 and the B-pillar 29, a first connecting bracket 4 is welded to the connection of the A-pillar hot gas expansion tube beam 3 to the B-pillar 29, and two nuts 26 are welded to the first connecting bracket 4. Two nuts 26 are also welded to the left and right sides of the sunroof reinforcement ring assembly 20 respectively. The front sunroof reinforcement ring connecting plate 21 connects the sunroof reinforcement ring assembly 20 and the B-pillar 29 through four M6 bolts 25. The front sunroof reinforcement ring connecting plate 21 is made of hot-formed material. Through such a structural design, the connection strength and stiffness at the upper part of the B-pillar 29 are increased, and the deformation at the joint during rollover is reduced.

[0050] See Figure 17 As shown in the figure, at the connection position between the sunroof reinforcement ring assembly 20 and the C-pillar 30, two nuts 26 are welded to the two ends of the rear part of the sunroof reinforcement ring assembly 20 respectively, and two nuts 26 are also welded to the CD pillar inner panel 12 respectively. The rear sunroof reinforcement ring connecting plate 22 connects the upper part of the C-pillar 30, the rear part of the sunroof reinforcement ring assembly 20, and the middle roof cross member assembly 33 through four M6 bolts 25 respectively. The rear sunroof reinforcement ring connecting plate 22 is made of hot-formed material. Through such a structural design, the connection strength and stiffness at the upper part of the C-pillar 30 are increased, and the deformation at the joint during rollover is reduced.

[0051] In some alternative embodiments: SeeFigure 1 , Figure 2 , Figure 11 As shown in Figure 11 , an upper body structure for preventing rollover of a non-load-bearing off-road vehicle is provided in an embodiment of the present application. The roof rear crossbeam assembly 34 of the upper body structure includes a roof rear crossbeam 23 and an outer panel 24 of the roof rear crossbeam. The roof rear crossbeam 23 and the outer panel 24 of the roof rear crossbeam are welded to each other and form a cavity structure inside. The roof rear crossbeam 23 is made of hot-formed steel material, and the outer panel 24 of the roof rear crossbeam is made of high-strength steel plate material. A D-pillar reinforcement plate 15 connected to the roof rear crossbeam assembly 34 is provided on the inner plate 12 of the CD pillar of the outer panel assembly of the side wall. Both ends of the roof rear crossbeam assembly 34 are fixedly connected to the D-pillar reinforcement plate 15 by welding and / or bolts 25.

[0052] At the connection position of the roof rear crossbeam assembly 34 and the D-pillar 31, both ends of the outer panel 24 of the roof rear crossbeam are longer than the roof rear crossbeam 23. The outer panel 24 of the roof rear crossbeam and the D-pillar reinforcement plate 15 are connected by solder joints, and the roof rear crossbeam 23 and the D-pillar reinforcement plate 15 are connected by solder joints. In this way, a double connection is formed between the D-pillar 31 and the roof rear crossbeam assembly 34 at the connection, ensuring the strength and stiffness of the connection between the D-pillar 31 and the roof rear crossbeam assembly 34.

[0053] In the description of the present application, it should be noted that the orientation or positional relationship indicated by terms such as "upper" and "lower" is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application 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. Therefore, it should not be construed as a limitation to the present application. Unless otherwise clearly specified and defined, the terms "installation", "connection", and "connection" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0054] It should be noted that in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the phrase "comprising a..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0055] The above are only specific embodiments of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application will not be limited to these embodiments shown herein, but rather will conform to the broadest scope consistent with the principles and novel features claimed herein.

Claims

1. A non-load-bearing off-road vehicle upper body structure for anti-rollover, characterized in that, Including: A body side panel assembly, with two sets of the body side panel assembly arranged symmetrically with each other. The body side panel assembly is sequentially divided into an A-pillar (28), a B-pillar (29), a C-pillar (30), and a D-pillar (31) from front to back; A body roof panel assembly, which is located at the top of the two sets of body side panel assemblies and is fixedly connected to each other. The body roof panel assembly includes a roof front crossbeam assembly (32), a sunroof reinforcement ring assembly (20), a roof middle crossbeam assembly (33), and a roof rear crossbeam assembly (34) arranged sequentially from front to back; A body floor assembly, which is located at the bottom of the two sets of body side panel assemblies and is fixedly connected to each other. The body floor assembly includes a front floor front crossbeam (35), a front floor rear crossbeam (36), a rear floor middle crossbeam (37), and a rear panel assembly (38) arranged sequentially from front to back; The roof front crossbeam assembly (32) and the front floor front crossbeam (35) are respectively fixedly connected to the A-pillar (28) and jointly form a first annular frame. The sunroof reinforcement ring assembly (20) and the front floor rear crossbeam (36) are respectively fixedly connected to the B-pillar (29) and jointly form a second annular frame; The roof middle crossbeam assembly (33) and the rear floor middle crossbeam (37) are respectively fixedly connected to the C-pillar (30) and jointly form a third annular frame. The roof rear crossbeam assembly (34) and the rear panel assembly (38) are respectively fixedly connected to the D-pillar (31) and jointly form a fourth annular frame.

2. The upper body structure of a non-load-bearing off-road vehicle for anti-rollover as claimed in claim 1, wherein: The body side panel assembly includes a side panel outer plate (1) and a side panel inner plate. A front door opening hot stamping door ring (2) located in the areas of the A-pillar (28) and the B-pillar (29) is connected between the side panel outer plate (1) and the side panel inner plate. The front door opening hot stamping door ring (2) includes a B-pillar reinforcement plate (39), an A-pillar upper side beam (40), a sill reinforcement plate (41), and an A-pillar vertical plate (42) which are welded end to end and then hot-pressed into shape; The thicknesses of the B-pillar reinforcement plate (39) and the A-pillar upper side beam (40) are both greater than the thicknesses of the sill reinforcement plate (41) and the A-pillar vertical plate (42). A B-pillar patch plate (43) formed by integral hot pressing is adhesively connected to the inner side of the B-pillar reinforcement plate (39), and the thickness of the B-pillar patch plate (43) is greater than the thickness of the B-pillar reinforcement plate (39).

3. The upper body structure of a non-load-bearing off-road vehicle for anti-rollover as claimed in claim 2, wherein: The side panel inner plate includes an A-pillar upper inner plate (5). The A-pillar upper inner plate (5) and the A-pillar upper side beam (40) are welded to each other to form a cavity structure. An A-pillar hot gas inflation tube beam (3) is connected in the cavity structure formed by the A-pillar upper inner plate (5) and the A-pillar upper side beam (40). The A-pillar hot gas inflation tube beam (3) is welded to the A-pillar upper side beam (40) or the A-pillar upper inner plate (5). A first connecting bracket (4) for supporting the A-pillar hot gas inflation tube beam (3) is also connected to the A-pillar upper inner plate (5).

4. The upper body structure for rollover prevention of a non - load - bearing off - road vehicle as claimed in claim 2, wherein: The inner side panel includes a B - pillar inner panel (7), and the B - pillar inner panel (7) is welded to the B - pillar reinforcement plate (39) to form a cavity structure. A B - pillar inner panel reinforcement plate (8) connected between the B - pillar inner panel (7) and the B - pillar reinforcement plate (39) is provided in the cavity structure formed by the B - pillar inner panel (7) and the B - pillar reinforcement plate (39), and the B - pillar inner panel reinforcement plate (8) divides the cavity structure into a double - cavity structure.

5. The upper body structure for rollover prevention of a non - load - bearing off - road vehicle as claimed in claim 2, wherein: A C - pillar reinforcement plate (9) is connected between the outer side panel (1) and the inner side panel in the C - pillar area. The inner side panel includes a CD - pillar inner panel (12) which is welded to the C - pillar reinforcement plate (9) to form a cavity structure; In the cavity structure formed by the C - pillar reinforcement plate (9) and the CD - pillar inner panel (12), a C - pillar upper hot - formed tube beam (10) and a C - pillar lower hot - formed tube beam (11) are provided. The C - pillar upper hot - formed tube beam (10) and the C - pillar lower hot - formed tube beam (11) are welded together through a C - pillar intermediate connecting tube beam (44); The C - pillar upper hot - formed tube beam (10), the C - pillar lower hot - formed tube beam (11) and the C - pillar intermediate connecting tube beam (44) are all welded to the C - pillar reinforcement plate (9). A CD - pillar inner panel reinforcement plate (48) is connected to the CD - pillar inner panel (12) in the cavity structure formed by the C - pillar reinforcement plate (9) and the CD - pillar inner panel (12).

6. The upper body structure for rollover prevention of a non - load - bearing off - road vehicle as claimed in claim 5, wherein: The CD - pillar inner panel (12) is connected to a D - pillar reinforcement plate (15) in the D - pillar area. A rear water - trough bracket (16) is connected between the D - pillar reinforcement plate (15) and the outer side panel (1). The D - pillar reinforcement plate (15), the outer side panel (1) and the rear water - trough bracket (16) are connected to form an outer cavity structure; A D - pillar inner support plate (13) is connected in the outer cavity structure formed by the connection of the D - pillar reinforcement plate (15), the outer side panel (1) and the rear water - trough bracket (16). A D - pillar inner support plate reinforcement plate (14) is connected to the D - pillar inner support plate (13), and the D - pillar inner support plate (13) and the D - pillar inner support plate reinforcement plate (14) together form an inner cavity structure.

7. The upper body structure for rollover prevention of a non - load - bearing off - road vehicle as claimed in claim 1, wherein: The front roof cross - beam assembly (32) includes a front roof cross - beam (19) and a front roof cross - beam outer panel (18). The front roof cross - beam (19) and the front roof cross - beam outer panel (18) are welded to each other and form a cavity structure inside. The front roof cross - beam (19) is made of hot - formed steel material, and the front roof cross - beam outer panel (18) is made of high - strength steel plate material; The outer side panel assembly is provided with a front roof cross member connecting plate (6) connected to the front roof cross member assembly (32). Both ends of the front roof cross member assembly (32) are fixedly connected to the front roof cross member connecting plate (6) by welding and / or bolts (25).

8. The upper body structure for anti-rollover of a non-load-bearing off-road vehicle according to claim 1, characterized in that: The skylight reinforcing ring assembly (20) includes a front skylight reinforcing ring, a left skylight reinforcing ring, a rear skylight reinforcing ring, and a right skylight reinforcing ring that are sequentially connected end to end. The front skylight reinforcing ring, the left skylight reinforcing ring, the rear skylight reinforcing ring, and the right skylight reinforcing ring are all formed by stamping high-strength steel plates; The front end of the skylight reinforcing ring assembly (20) is connected to the front roof cross member assembly (32) by spot welding and / or bolts (25), and the rear end of the skylight reinforcing ring assembly (20) is connected to the middle roof cross member assembly (33) by spot welding and / or bolts (25); The outer side panel assembly is provided with a front skylight reinforcing ring connecting plate (21) connected to the left and right sides of the middle part of the skylight reinforcing ring assembly (20) by spot welding and / or bolts (25), and a rear skylight reinforcing ring connecting plate (22) connected to both sides of the middle roof cross member assembly (33) by spot welding and / or bolts (25).

9. The upper body structure for anti-rollover of a non-load-bearing off-road vehicle according to claim 1, characterized in that: The rear roof cross member assembly (34) includes a rear roof cross member (23) and a rear roof cross member outer panel (24). The rear roof cross member (23) and the rear roof cross member outer panel (24) are welded to each other and form a cavity structure inside. The rear roof cross member (23) is made of hot-formed steel material, and the rear roof cross member outer panel (24) is made of high-strength steel plate material; The outer side panel assembly is provided with a D-pillar reinforcement plate (15) connected to the rear roof cross member assembly (34). Both ends of the rear roof cross member assembly (34) are fixedly connected to the D-pillar reinforcement plate (15) by welding and / or bolts (25).

10. The upper body structure for anti-rollover of a non-load-bearing off-road vehicle according to claim 1, characterized in that: The vehicle body roof assembly further includes a roof outer panel (17). The roof outer panel (17) covers the tops of the front roof cross member assembly (32), the skylight reinforcing ring assembly (20), the middle roof cross member assembly (33), and the rear roof cross member assembly (34) and is welded to each other.

Images