Body-in-white frame structure and vehicle

Abstract

The invention provides a body-in-white frame structure and a vehicle, and relates to the technical field of vehicle parts, the body-in-white frame structure comprises a side wall framework assembly and a floor framework assembly, the side wall framework assembly comprises a single door ring structure, a closed ring body, a rear wheel cover outer plate assembly and a doorsill beam which are connected in sequence, and the doorsill beam is connected to the lower end of the single door ring structure; the closed ring body and the rear wheel cover outer plate assembly are located on the side, facing the rear of the vehicle, of the single-door ring structure, the rear wheel cover outer plate assembly is located below the closed ring body, and a closed ring is defined by the rear wheel cover outer plate assembly and the closed ring body. Threshold beams are connected to the left end and the right end of the front floor framework assembly respectively, the left end and the right end of the rear floor framework assembly are connected to the corresponding rear wheel cover outer plate assemblies respectively, and the rear floor framework assembly and the closed ring body are both castings. Therefore, the vehicle body structure can be simplified, a plurality of closed collision force transmission paths are formed on the side wall framework assembly to transmit and absorb collision energy, and the safety performance is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle parts, and more particularly, to a body-in-white frame structure and a vehicle. Background Art

[0002] Currently, traditional body structures are mainly formed by welding multiple cold-stamped parts together. The number of parts is relatively large, the structure is relatively complex, and there are non-closed-loop collision force transmission paths or limited covered collision force transmission paths. When being impacted, it is easy to cause poor force transmission or even force transmission interruption, resulting in poor collision safety performance of the vehicle body. Summary of the Invention

[0003] The problem to be solved by the present invention is: how to optimize the production process of the vehicle body structure and improve the safety performance of the vehicle body structure.

[0004] To solve the above problems, the present invention provides a body-in-white frame structure and a vehicle.

[0005] In a first aspect, the present invention provides a body-in-white frame structure, including a floor skeleton assembly and a side wall skeleton assembly. The two ends of the floor skeleton assembly in the left-right direction of the vehicle body are respectively connected to the side wall skeleton assembly:

[0006] The side wall skeleton assembly includes a single-door ring structure, a closed ring body, a rear wheelhouse outer panel assembly, and a sill beam connected in sequence. The sill beam is connected to the lower end of the single-door ring structure. The single-door ring structure and the closed ring body form a closed ring structure. The closed ring body and the rear wheelhouse outer panel assembly are located on the side of the single-door ring structure facing the rear of the vehicle. The rear wheelhouse outer panel assembly is located below the closed ring body and encloses a closed ring with the closed ring body. The single-door ring structure encloses a first door opening, and the single-door ring structure, the closed ring body, the rear wheelhouse outer panel assembly, and the sill beam together enclose a second door opening;

[0007] The floor skeleton assembly includes a front floor skeleton assembly and a rear floor skeleton assembly. The two ends of the front floor skeleton assembly in the left-right direction of the vehicle body are respectively connected to the sill beam. The two ends of the rear floor skeleton assembly in the left-right direction of the vehicle body are respectively connected to the corresponding rear wheelhouse outer panel assemblies. Both the rear floor skeleton assembly and the closed ring body are castings.

[0008] Optionally, the single-door ring structure includes a door ring outer panel. The door ring outer panel includes an A-pillar outer panel and a B-pillar outer panel. The upper end of the A-pillar outer panel is welded to the upper end of the B-pillar outer panel, and the lower end of the A-pillar outer panel is welded to the lower end of the B-pillar outer panel. The upper end of the B-pillar outer panel extends rearward in the front-rear direction of the vehicle body and is connected to the closed ring body. The door ring outer panel is obtained by integrally hot stamping the blank pieces of the A-pillar outer panel and the B-pillar outer panel after welding.

[0009] Optionally, the single door ring structure further includes a door ring inner plate connected to the inner side of the door ring outer plate. The door ring inner plate includes an upper section of the door ring inner plate, a lower section of the A-pillar inner plate disposed opposite to the lower section of the A-pillar outer plate, and a middle section of the B-pillar inner plate disposed opposite to the middle section of the B-pillar outer plate. The upper section of the door ring inner plate includes an upper section of the A-pillar inner plate and an upper section of the B-pillar inner plate. The upper section of the door ring inner plate is obtained by integrally hot stamping the blank pieces of the upper section of the A-pillar inner plate and the upper section of the B-pillar inner plate after welding. The lower section of the A-pillar inner plate and the middle section of the B-pillar inner plate are respectively connected to the sill beam.

[0010] Optionally, the closed ring body includes an upper section of the C-pillar, an upper section of the D-pillar, and a reinforcing plate that are sequentially connected to form a closed ring structure. The connection between the upper section of the C-pillar and the reinforcing plate and the connection between the upper section of the D-pillar and the reinforcing plate are respectively connected to the outer panel assembly of the rear wheel housing.

[0011] Optionally, the outer panel assembly of the rear wheel housing includes a lower section of the C-pillar, a lower section of the D-pillar, and an outer panel of the rear wheel housing that are respectively connected to the rear floor frame assembly. The lower section of the C-pillar is connected to the sill beam and is connected to the connection between the upper section of the C-pillar and the reinforcing plate. The lower section of the D-pillar is connected to the connection between the upper section of the D-pillar and the reinforcing plate. And the lower section of the C-pillar and the lower section of the D-pillar are respectively connected to the outer panel of the rear wheel housing.

[0012] Optionally, the body-in-white frame structure further includes a roof frame assembly. The roof frame assembly includes a front roof cross member and a rear roof cross member. The two ends of the front roof cross member in the left-right direction of the vehicle body are respectively connected to the upper ends of the corresponding single door ring structures. The two ends of the rear roof cross member in the left-right direction of the vehicle body are respectively connected to the corresponding closed ring bodies.

[0013] Optionally, the roof frame assembly further includes an integrally formed skylight reinforcing ring and a roof middle cross member disposed between the front roof cross member and the rear roof cross member. The two ends of the roof middle cross member in the left-right direction of the vehicle body are respectively connected to the corresponding closed ring bodies. The skylight reinforcing ring is disposed between the front roof cross member and the roof middle cross member. The two ends of the skylight reinforcing ring in the front-rear direction of the vehicle body are respectively connected to the front roof cross member and the roof middle cross member. The two ends of the skylight reinforcing ring in the left-right direction of the vehicle body are respectively connected to the corresponding single door ring structures.

[0014] Optionally, the body-in-white frame structure further includes a front engine compartment skeleton assembly, which includes a windshield lower trim panel, two engine compartment longitudinal beams, two shock towers, and a cross bar arranged in the left-right direction of the vehicle body. The shock tower is a cast aluminum part, the lower end of the shock tower is connected to the corresponding engine compartment longitudinal beam, both ends of the cross bar are respectively connected to the upper ends of the two shock towers, both ends of the cross bar are also connected to the windshield lower trim panel, and both ends of the windshield lower trim panel in the left-right direction of the vehicle body are respectively connected to the corresponding single-door ring structure.

[0015] Optionally, the front engine compartment skeleton assembly further includes a front engine compartment side reinforcement plate. The opposite ends of the front engine compartment side reinforcement plate are respectively connected to the engine compartment longitudinal beam and the single-door ring structure, and the front engine compartment side reinforcement plate, the engine compartment longitudinal beam, and the single-door ring structure enclose a closed ring structure. The shock tower is located within the area enclosed by the closed ring structure and is connected to the front engine compartment side reinforcement plate.

[0016] In a second aspect, the present invention provides a vehicle including the body-in-white frame structure as described above.

[0017] The beneficial effects of the body-in-white frame structure and the vehicle of the present invention are as follows: The connection between the front floor skeleton assembly in the floor skeleton assembly and the sill beam in the side wall skeleton assembly can be realized to achieve the connection between the side wall skeleton assembly and the front half of the floor skeleton assembly. At the same time, by designing both the rear floor skeleton assembly in the floor skeleton assembly and the closed ring body in the side wall skeleton assembly as integral castings, not only can the structural strength of the rear half of the body-in-white frame structure be improved, providing higher safety protection for rear passengers, but also the vehicle body weight can be reduced and the number of parts can be decreased, thereby simplifying the vehicle body structure and improving the integration of the vehicle body. Moreover, by setting the side wall skeleton assembly to include a single-door ring structure, a closed ring body, an outer wheelhouse panel assembly, and a sill beam connected in sequence, designing the closed ring body as a closed ring structure, enclosing the first door opening with the single-door ring structure, and jointly enclosing the second door opening with the single-door ring structure, the closed ring body, the outer wheelhouse panel assembly, and the sill beam, four closed longitudinal rings are formed on the side wall skeleton assembly. In this way, when the vehicle is subjected to a frontal collision, the frontal collision force can be transmitted to the longitudinal rings, and these four closed longitudinal rings can be used as collision force transmission paths to transmit collision energy, facilitating the body-in-white frame structure to better absorb collision energy and improving the safety performance of the body-in-white frame structure. Description of the Drawings

[0018] Figure 1 It is a structural schematic diagram of the body-in-white frame structure in an embodiment of the present invention;

[0019] Figure 2 It is a structural schematic diagram of the body-in-white frame structure from another perspective in an embodiment of the present invention;

[0020] Figure 3 It is a schematic structural diagram of another perspective of the body-in-white frame structure in the embodiment of the present invention;

[0021] Figure 4 It is a schematic structural diagram of the body-in-white frame structure at the closed loop in the embodiment of the present invention;

[0022] Figure 5 It is a bottom view schematic diagram of the body-in-white frame structure in the embodiment of the present invention;

[0023] Figure 6 It is a schematic structural diagram of the rear half part of the body-in-white frame structure in the embodiment of the present invention;

[0024] Figure 7 It is a schematic structural diagram of the body-in-white frame structure at the front engine compartment skeleton assembly in the embodiment of the present invention;

[0025] Figure 8 It is a schematic structural diagram of the front engine compartment skeleton assembly at the shock tower in the embodiment of the present invention;

[0026] Figure 9 It is a schematic distribution diagram of the longitudinal rings in the "cocoon" - type loop of the body-in-white frame structure in the embodiment of the present invention;

[0027] Figure 10 It is a schematic distribution diagram of the transverse rings in the "cocoon" - type loop of the body-in-white frame structure in the embodiment of the present invention;

[0028] Figure 11 It is a schematic distribution diagram of the vertical rings in the "cocoon" - type loop of the body-in-white frame structure in the embodiment of the present invention

[0029] Figure 12 It is a schematic diagram of the force transmission route of the body-in-white frame structure in the embodiment of the present invention.

[0030] Explanation of reference numerals:

[0031] 1. Floor skeleton assembly; 11. Front floor skeleton assembly; 111. Middle channel longitudinal beam; 112. Front floor seat cross beam; 12. Rear floor skeleton assembly; 121. Rear floor skeleton; 1211. Front rear floor cross beam; 1212. Rear floor seat cross beam; 1213. Rear rear floor cross beam; 122. Front rear floor panel; 123. Inner panel of rear wheel housing

[0032] 2. Side frame assembly; 21. Single door ring structure; 211. Door ring outer panel; 2111. A-pillar outer panel; 2111a. A-pillar outer panel upper section; 2111b. A-pillar outer panel lower section; 2112. B-pillar outer panel; 2112a. B-pillar outer panel upper section; 2112b. B-pillar outer panel middle section; 2112c. B-pillar outer panel lower section; 212. Door ring inner panel; 2121. Door ring inner panel upper section; 21 21a, upper section of the inner panel of the A-pillar; 2121b, upper section of the inner panel of the B-pillar; 2122, lower section of the inner panel of the A-pillar; 2123, middle section of the inner panel of the B-pillar; 22, door sill beam; 23, closed ring body; 231, upper section of the C-pillar; 232, upper section of the D-pillar; 233, reinforcement plate; 234, connecting part; 24, rear wheel housing outer panel assembly; 241, lower section of the C-pillar; 242, lower section of the D-pillar; 243, rear wheel housing outer panel;

[0033] 3. Top cover frame assembly; 31. Top cover front crossbeam; 32. Top cover rear crossbeam; 33. Skylight reinforcement ring; 34. Top cover middle crossbeam;

[0034] 4. Front cabin frame assembly; 41. Windshield lower trim; 42. Cabin longitudinal beam; 43. Shock tower; 44. Lateral tie rod; 441. Tie rod body; 442. Connecting rod; 45. Front cabin side reinforcement plate;

[0035] 5. Rear lower beam. DETAILED DESCRIPTION

[0036] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. Although certain embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be interpreted as being limited to the embodiments described herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the drawings and embodiments of the present invention are only for exemplary purposes and are not intended to limit the scope of protection of the present invention.

[0037] The Z axis in the drawings represents the vertical direction, that is, the up and down position, and the positive direction of the Z axis represents the top, and the reverse direction of the Z axis represents the bottom; the X axis in the drawings represents the horizontal direction, and is designated as the front and back position, and the positive direction of the X axis represents the front side, and the reverse direction of the X axis represents the back side; the Y axis in the drawings represents the left and right position, and the positive direction of the Y axis represents the left side, and the reverse direction of the Y axis represents the right side. It should also be noted that the aforementioned Z axis, Y axis, and X axis are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0038] As used herein, the term "including" and its variations are open-ended, that is, "including but not limited to"; the term "based on" means "at least partially based on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments"; the term "optionally" means "optional embodiment". The relevant definitions of other terms will be given in the following description. It should be noted that the concepts such as "first" and "second" mentioned in the present invention are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0039] It should be noted that the modifications of "one" and "multiple" mentioned in the present invention are illustrative rather than restrictive. Those skilled in the art should understand that, unless otherwise clearly specified in the context, it should be understood as "one or more".

[0040] In the related art, the traditional body structure is mainly formed by welding multiple cold stamping parts. The number of parts is large, the structure is relatively complex, and there is a non-closed-loop collision force transmission path or the covered collision force transmission path is limited. When being impacted, it is easy to cause poor force transmission or even force transmission interruption, resulting in poor collision safety performance of the body.

[0041] In view of the problems existing in the above-mentioned related art, the present invention provides a white body frame structure and a vehicle.

[0042] Combined Figure 1 、 Figure 9 and Figure 12 As shown, a white body frame structure provided by an embodiment of the present invention includes a floor skeleton assembly 1 and a side wall skeleton assembly 2. The two ends of the floor skeleton assembly 1 in the left-right direction of the vehicle body are respectively connected to the side wall skeleton assembly 2:

[0043] The side wall skeleton assembly 2 includes a single door ring structure 21, a closed ring body 23, a rear wheel housing outer panel assembly 24 and a sill beam 22 connected in sequence. The sill beam 22 is connected to the lower end of the single door ring structure 21. The single door ring structure 21 and the closed ring body 23 form a closed ring structure. The closed ring body 23 and the rear wheel housing outer panel assembly 24 are located on one side of the single door ring structure 21 facing the rear of the vehicle. The rear wheel housing outer panel assembly 24 is located below the closed ring body 23 and encloses a closed ring with the closed ring body 23. And the single door ring structure 21 encloses a first door opening, and the single door ring structure 21, the closed ring body 23, the rear wheel housing outer panel assembly 24 and the sill beam 22 jointly enclose a second door opening;

[0044] The floor skeleton assembly 1 includes a front floor skeleton assembly 11 and a rear floor skeleton assembly 12. At both ends of the front floor skeleton assembly 11 in the left - right direction of the vehicle body, sill beams 22 are respectively connected. At both ends of the rear floor skeleton assembly 12 in the left - right direction of the vehicle body, they are respectively connected to the corresponding outer wheelhouse panel assemblies 24. And both the rear floor skeleton assembly 12 and the closed ring body 23 are castings.

[0045] It should be noted that the left - right direction of the vehicle body refers to Figure 1 the Y - axis direction in Figure 1 and is abbreviated as the left - right direction. Correspondingly, the front - rear direction of the vehicle body refers to Figure 1 the X - axis direction in

[0046] and is abbreviated as the front - rear direction. The front direction of the vehicle refers to the positive direction of the X - axis, the rear direction of the vehicle refers to the negative direction of the X - axis, and the up - down direction of the vehicle body refers to Figure 9 the Z - axis direction in Figure 9 and is abbreviated as the up - down direction. Figure 9 Specifically, on each of the left and right sides of the floor skeleton assembly 1, there is a side - wall skeleton assembly 2. In the side - wall skeleton assembly 2, the single - door - ring structure 21 is connected to the floor skeleton assembly 1 through the sill beam 22. Moreover, both the single - door - ring structure 21 and the closed ring body 23 are in a closed - loop structure, and the outer wheelhouse panel assembly 24 is in an open - loop structure. The opening of this open - loop structure faces upward, that is, the outer wheelhouse panel assembly 24 is a non - closed loop structure, but the outer wheelhouse panel assembly 24 and, for example, a reinforcing plate 233 in the closed ring body 23 form a closed loop structure. The single - door - ring structure 21 itself can enclose a first door opening, and, for example, the B - pillar in the single - door - ring structure 21, the upper part of the C - pillar 231 in the closed ring body 23, the lower part of the C - pillar 241 in the outer wheelhouse panel assembly 24, and the rear half of the sill beam 22 together enclose a second door opening. Among them, the first door opening is used for installing the front door, and the second door opening is used for installing the rear door. This structure of the side - wall skeleton assembly 2 enables four closed longitudinal rings (i.e., ring - like structures with the center line approximately in the Y - axis direction) to be distributed on the side - wall skeleton assembly 2, and the left and right two side - wall skeleton assemblies 2 enable eight closed longitudinal rings to be formed on the body - in - white frame structure. Among them, the single - door - ring structure 21 in a closed - loop structure constitutes the first longitudinal ring (i.e., Figure 9 ring A in Figure 9 ), which is also the ring enclosing the first door opening. The B - pillar part of the single - door - ring structure 21, the upper part of the C - pillar 231 of the closed ring body 23, the lower part of the C - pillar 241 of the outer wheelhouse panel assembly 24, and the sill beam 22 form the second longitudinal ring (i.e., Figure 9In the ring C), the outer panel assembly 24 of the rear wheelhouse and, for example, the reinforcing plate 233 in the closed ring body 23 form a fourth longitudinal ring. In addition, both the rear floor skeleton assembly 12 in the floor skeleton assembly 1 and the closed ring body 23 in the side wall skeleton assembly 2 are castings with an integral structure. In practical applications, they are usually designed as cast aluminum parts, that is, the rear floor skeleton assembly 12 and the closed ring body 23 are two separate parts, rather than being formed by welding multiple component plates.

[0047] In this embodiment, the body-in-white frame structure can be achieved by connecting the front floor skeleton assembly 11 in the floor skeleton assembly 1 with the sill beam 22 in the side wall skeleton assembly 2 to realize the connection between the side wall skeleton assembly 2 and the front half of the floor skeleton assembly 1. At the same time, by designing both the rear floor skeleton assembly 12 in the floor skeleton assembly 1 and the closed ring body 23 in the side wall skeleton assembly 2 as castings with an integral structure, not only can the structural strength of the rear half of the body-in-white frame structure be improved, providing higher safety protection for rear passengers, but also the vehicle body weight can be reduced, the number of components can be decreased, thereby simplifying the vehicle body structure and improving the integration degree of the vehicle body. Moreover, by setting the side wall skeleton assembly 2 to include a single-door ring structure 21, a closed ring body 23, an outer panel assembly 24 of the rear wheelhouse, and a sill beam 22 connected in sequence, and designing the closed ring body 23 as a closed ring structure, enclosing the first door opening with the single-door ring structure 21, and enclosing the second door opening with the single-door ring structure 21, the closed ring body 23, the outer panel assembly 24 of the rear wheelhouse, and the sill beam 22 together, four closed longitudinal rings are formed on the side wall skeleton assembly 2. In this way, when the vehicle is subjected to a frontal collision, the frontal collision force can be transmitted to the longitudinal rings (as shown by the yellow arrows on the side wall skeleton in Figure 12 ), so that these four closed longitudinal rings can be used as collision force transmission paths to transmit collision energy, facilitating the body-in-white frame structure to better absorb collision energy and improving the safety performance of the body-in-white frame structure.

[0048] Furthermore, the sill beam 22 can be an aluminum profile structure. Compared with the traditional sill beam structure formed by welding inner and outer sheet metal parts, it not only endows the sill beam 22 with higher structural strength, thereby improving the collision performance of the vehicle body side wall, but also can further reduce the number of vehicle body parts and improve the integration degree.

[0049] Optionally, in combination with Figure 2 and Figure 3As shown, the single-door ring structure 21 includes a door ring outer panel 211. The door ring outer panel 211 includes an A-pillar outer panel 2111 and a B-pillar outer panel 2112. The upper end of the A-pillar outer panel 2111 is welded to the upper end of the B-pillar outer panel 2112, and the lower end of the A-pillar outer panel 2111 is welded to the lower end of the B-pillar outer panel 2112. The upper end of the B-pillar outer panel 2112 extends rearward in the vehicle body's front-rear direction and is connected to the closed ring body 23. Moreover, the door ring outer panel 211 is obtained by integrally hot stamping the blank pieces of the A-pillar outer panel 2111 and the B-pillar outer panel 2112 after welding them together.

[0050] In this alternative embodiment, the single-door ring structure 21 is composed of a door ring outer panel 211 and a door ring inner panel 212 (introduced later). Among them, the door ring outer panel 211 is an integral structure, and there is a cavity between the door ring outer panel 211 and the door ring inner panel 212. Specifically, the door ring outer panel 211 includes an A-pillar outer panel 2111 and a B-pillar outer panel 2112. Among them, the upper end of the B-pillar outer panel 2112 extends towards the rear of the vehicle to the closed ring body 23. The A-pillar outer panel 2111 includes an upper section 2111a and a lower section 2111b of the A-pillar outer panel, and the B-pillar outer panel 2112 includes an upper section 2112a, a middle section 2112b, and a lower section 2112c of the B-pillar outer panel. When manufacturing the door ring outer panel 211, blanks of the upper section 2111a of the A-pillar outer panel, the lower section 2111b of the A-pillar outer panel, the upper section 2112a of the B-pillar outer panel, the middle section 2112b of the B-pillar outer panel, and the lower section 2112c of the B-pillar outer panel can be first cut from a steel coil, and then the blanks of the upper section 2111a of the A-pillar outer panel, the lower section 2111b of the A-pillar outer panel, the upper section 2112a of the B-pillar outer panel, the middle section 2112b of the B-pillar outer panel, and the lower section 2112c of the B-pillar outer panel are subjected to laser welding or spot welding to form a door ring outer panel substrate, and then the door ring outer panel substrate is integrally hot-stamped to obtain the door ring outer panel 211 with an integral structure. In this way, the door ring outer panel 211 is a hot-stamped part. Compared with a cold-stamped part, a hot-stamped part has higher structural strength, thereby improving the collision performance of the door ring outer panel 211 and even the single-door ring structure 21. In addition, the door ring outer panel 211 formed by hot stamping can not only further improve the degree of integration, reduce the number of parts, but also reduce the number of solder joints and weld seams. At the same time, it can also reduce the number of molds or gauges, reduce the welding process of loose parts in the factory, shorten the factory production line, increase the utilization rate of the factory, reduce the number of workers and working hours, and reduce production costs. Moreover, since the lower end of the single-door ring structure 21 is wrapped on the sill beam 22, if the door ring outer panel 211 and the door ring inner panel 212 are integrally set as an integral structure, it is not convenient to assemble the white body on the fixture. Therefore, in this embodiment, the door ring outer panel 211 is adopted with an integral structure, so that when assembling the white body, the door ring inner panel 212 can be first assembled between the sill beam 22 and the roof cross member, and then the door ring outer panel 211 is pushed along the left-right direction towards the door ring inner panel 212 for assembly on the left or right side of the white body, so as to simplify the movement track of the fixture and improve the convenience of assembling the white body.

[0051] In other embodiments, the outer panel 211 of the door ring further includes a sill reinforcement plate (not shown in the figure) extending in the front-rear direction of the vehicle body. The lower ends of the outer panel 2111 of the A-pillar and the outer panel 2112 of the B-pillar are respectively welded to both ends of the sill reinforcement plate in the front-rear direction of the vehicle body. The outer panel 211 of the door ring is obtained by integrally hot stamping the blank pieces of the outer panel 2111 of the A-pillar, the outer panel 2112 of the B-pillar, and the sill reinforcement plate. That is to say, in this embodiment, the lower end of the outer panel 2112 of the B-pillar does not extend to the lower end of the outer panel 2111 of the A-pillar in the front-rear direction of the vehicle body, that is, there is a gap between the lower end of the outer panel 2111 of the A-pillar and the lower end of the outer panel 2112 of the B-pillar, and it is necessary to connect them through the sill reinforcement plate.

[0052] Further, the outer panel 211 of the door ring further includes a reinforcement structure (not shown in the figure). The reinforcement structure is welded to the inner side of the blank piece of at least one of the outer panel 2111 of the A-pillar, the outer panel 2112 of the B-pillar, and the sill reinforcement plate, and is hot stamped together with the blank pieces of the outer panel 2111 of the A-pillar, the outer panel 2112 of the B-pillar, and the sill reinforcement plate to obtain the outer panel 211 of the door ring. In this way, by adding a reinforcement structure inside the outer panel 211 of the door ring, the rigidity and strength of the single door ring structure 21 are further improved, and thus the side impact safety performance of the side wall frame assembly 2 is improved.

[0053] Optionally, as shown in Figure 2 the single door ring structure 21 further includes an inner panel 212 of the door ring connected to the inner side of the outer panel 211 of the door ring. The inner panel 212 of the door ring includes an upper section 2121 of the inner panel of the door ring, a lower section 2122 of the inner panel of the A-pillar disposed opposite to the lower section of the outer panel 2111 of the A-pillar, and a middle section 2123 of the inner panel of the B-pillar disposed opposite to the middle section of the outer panel 2112 of the B-pillar. The upper section 2121 of the inner panel of the door ring includes an upper section 2121a of the inner panel of the A-pillar and an upper section 2121b of the inner panel of the B-pillar. The upper section 2121 of the inner panel of the door ring is obtained by integrally hot stamping the blank pieces of the upper section 2121a of the inner panel of the A-pillar and the upper section 2121b of the inner panel of the B-pillar. The lower section 2122 of the inner panel of the A-pillar and the middle section 2123 of the inner panel of the B-pillar are respectively connected to the sill beam 22.

[0054] In this alternative embodiment, the upper section 2121a of the A-pillar inner panel and the lower section 2122 of the A-pillar inner panel form the A-pillar inner panel, the upper section 2121b of the B-pillar inner panel and the middle section 2123 of the B-pillar inner panel form the B-pillar inner panel, the outer panel 2111 of the A-pillar and the A-pillar inner panel form the A-pillar of the vehicle body side panel, and the outer panel 2112 of the B-pillar and the B-pillar inner panel form the B-pillar of the vehicle body side panel. When manufacturing the upper section 2121 of the door ring inner panel, the strip materials of the upper section 2121a of the A-pillar inner panel and the upper section 2121b of the B-pillar inner panel can be cut from the steel coil first, and then the strip materials of the upper section 2121a of the A-pillar inner panel and the upper section 2121b of the B-pillar inner panel are subjected to laser welding or spot welding to form the substrate of the upper section of the door ring inner panel, and then the substrate of the upper section of the door ring inner panel is integrally hot-stamped to obtain the upper section 2121 of the door ring inner panel with an integrated structure. In this way, the upper section 2121 of the door ring inner panel is also a hot-stamped forming part, which can improve the structural strength of the door ring inner panel 212, thereby improving the collision performance of the single door ring structure 21. Moreover, the degree of integration can be increased, the number of parts can be reduced. At the same time, the number of solder joints and weld seams can be reduced, the number of molds or gauges can be reduced, the welding process of loose parts in the factory can be reduced, the factory production line can be shortened, and the production cost can be reduced.

[0055] Further, the lower section 2122 of the A-pillar inner panel and the middle section 2123 of the B-pillar inner panel are also hot-stamped forming parts. In this way, the structural strength of the door ring inner panel 212 can be further improved.

[0056] Optionally, as shown in Figure 2 and Figure 4 , the closed ring body 23 includes the upper section 231 of the C-pillar, the upper section 232 of the D-pillar and the reinforcing plate 233 that are sequentially connected to form a closed ring structure. The connection between the upper section 231 of the C-pillar and the reinforcing plate 233 and the connection between the upper section 232 of the D-pillar and the reinforcing plate 233 are respectively connected to the outer panel assembly 24 of the rear wheel housing.

[0057] In this alternative embodiment, the upper section 231 of the C-pillar, the upper section 232 of the D-pillar and the reinforcing plate 233 form a closed third longitudinal ring, that is, the closed ring body 23 constitutes the third longitudinal ring. In this way, the structural stability and collision performance of the vehicle body side panel can be improved. Moreover, by connecting, for example, the lower section 241 of the C-pillar of the outer panel assembly 24 of the rear wheel housing to the connection between the upper section 231 of the C-pillar and the reinforcing plate 233, and connecting, for example, the lower section 242 of the D-pillar of the outer panel assembly 24 of the rear wheel housing to the connection between the upper section 232 of the D-pillar and the reinforcing plate 233, the connection between the closed ring body 23 and the outer panel assembly 24 of the rear wheel housing can be ensured to have a high structural strength, thereby improving the structural stability and collision performance of the vehicle body side panel.

[0058] Optionally, as shown in Figure 2 and Figure 4As shown, the outer panel assembly 24 of the rear wheel housing includes the lower part 241 of the C-pillar, the lower part 242 of the D-pillar, and the outer panel 243 of the rear wheel housing, which are respectively connected to the rear floor frame assembly 12. The lower part 241 of the C-pillar is connected to the sill beam 22 and is connected to the connection part of the upper part 231 of the C-pillar and the reinforcement plate 233. The lower part 242 of the D-pillar is connected to the connection part of the upper part 232 of the D-pillar and the reinforcement plate 233, and the lower part 241 of the C-pillar and the lower part 242 of the D-pillar are respectively connected to the outer panel 243 of the rear wheel housing.

[0059] In this alternative embodiment, the upper part 231 of the C-pillar and the lower part 241 of the C-pillar form the C-pillar of the vehicle body side wall, and the upper part 232 of the D-pillar and the lower part 242 of the D-pillar form the D-pillar of the vehicle body side wall. Moreover, the lower part 241 of the C-pillar, the lower part 242 of the D-pillar, the outer panel 243 of the rear wheel housing, and the reinforcement plate 233 form a closed fourth longitudinal ring, that is, the outer panel assembly 24 of the rear wheel housing and the reinforcement plate 233 form the fourth longitudinal ring. At the same time, by connecting the lower part 241 of the C-pillar to the sill beam 22, the B-pillar, C-pillar, and sill beam 22 of the vehicle body side wall enclose a closed second longitudinal ring. In this way, the structural stability and collision performance of the vehicle body side wall are improved.

[0060] Optionally, in combination Figure 1 As shown, the body-in-white frame structure further includes a roof frame assembly 3. The roof frame assembly 3 includes a front roof cross member 31 and a rear roof cross member 32. The left and right ends of the front roof cross member 31 are respectively connected to the upper ends of the corresponding single-door ring structures 21, and the left and right ends of the rear roof cross member 32 are respectively connected to the corresponding closed ring bodies 23. In this way, the connection between the roof frame assembly 3 and the side wall frame assembly 2 is realized.

[0061] Furthermore, a connection part 234 extends along the left-right direction of the vehicle body at the connection part of the upper part 231 of the C-pillar and the upper part 232 of the D-pillar, and the connection part 234 is connected to the rear roof cross member 32.

[0062] Optionally, in combination Figure 1 As shown, the roof frame assembly 3 further includes an integrally formed skylight reinforcement ring 33 and a roof middle cross member 34 provided between the front roof cross member 31 and the rear roof cross member 32. The two ends of the roof middle cross member 34 are respectively connected to the corresponding closed ring bodies 23. The skylight reinforcement ring 33 is arranged between the front roof cross member 31 and the roof middle cross member 34. The two ends of the skylight reinforcement ring 33 along the front-rear direction of the vehicle body are respectively connected to the front roof cross member 31 and the roof middle cross member 34, and the two ends of the skylight reinforcement ring 33 along the left-right direction of the vehicle body are respectively connected to the corresponding single-door ring structures 21. In this way, two transverse rings (that is, ring-shaped structures with the center line generally located in the Z-axis direction) are formed at the top of the body-in-white. Among them, the skylight reinforcement ring 33 forms the first transverse ring (that is, Figure 10 ring E in Figure 10in the ring F). When the vehicle is in a frontal collision, the frontal collision force can be transmitted to these two transverse rings (as shown by the yellow arrow at the roof in Figure 12 ), so that these two closed transverse rings can be used as a collision force transmission path to transmit the collision energy, facilitating the body-in-white frame structure to better absorb the collision energy and improving the safety performance of the body-in-white frame structure.

[0063] Furthermore, the front roof crossmember 31, the skylight reinforcement ring 33, the middle roof crossmember 34, and the rear roof crossmember 32 are hot stamping formed parts. In this way, the structural strength of the roof skeleton assembly 3 can be improved, and further the collision performance of the body-in-white can be improved.

[0064] Furthermore, as shown in combination with Figure 5 and Figure 6 , the rear floor skeleton assembly 12 includes an integrally connected rear floor skeleton 121, a rear floor front panel 122, and an inner rear wheelhouse panel 123. The inner rear wheelhouse panel 123 is connected to the inner side of the outer rear wheelhouse panel 243, and the rear floor skeleton 121 and the rear floor front panel 122 are respectively connected to the sill beam 22. In this way, by integrating the rear floor skeleton 121, the rear floor front panel 122, and the inner rear wheelhouse panel 123 from traditional sheet metal parts into an integrally cast aluminum part, the number of parts and the welding process can be reduced. At the same time, the weight of the rear floor skeleton assembly 12 can also be reduced, facilitating the lightweight design of the body-in-white.

[0065] Furthermore, as shown in combination with Figure 5 , the front floor skeleton assembly 11 includes a center tunnel longitudinal beam 111 and a front floor seat crossbeam 112. The front end of the center tunnel longitudinal beam 111 is connected to the engine bay longitudinal beams 42 (introduced later) on both sides, the rear end of the center tunnel longitudinal beam 111 is connected to the front floor seat crossbeam 112, and the two ends of the front floor seat crossbeam 112 are respectively connected to the sill beam 22. In this way, the rear sections of the engine bay longitudinal beams 42 on both sides, the front section of the center tunnel longitudinal beam 111, the sill beams 22 on both sides, and the front floor seat crossbeam 112 form a third transverse ring (i.e., Figure 10 the ring G in Figure 12 ). When the vehicle is in a side collision, the side collision force can be transmitted to the closed transverse ring (as shown by the blue arrow in

[0066] ), facilitating the body-in-white frame structure to better absorb the collision energy and improving the safety performance of the body-in-white frame structure. At the same time, the coverage range of the closed-loop collision force transmission path in the body-in-white can also be improved.

[0067] Furthermore, the center tunnel longitudinal beam 111 and the front floor seat crossbeam 112 are hot stamping formed parts. In this way, the structural strength of the front floor skeleton assembly 11 can be improved, and further the collision performance of the body-in-white can be improved. Figure 2 and Figure 6As shown, the body-in-white frame structure further includes a rear under crossmember 5. The left and right ends of the rear under crossmember 5 are respectively connected to the corresponding lower sections 242 of the D-pillars. The rear floor frame 121 includes a rear floor front crossmember 1211, a rear floor seat crossmember 1212, and a rear floor rear crossmember 1213 that are spaced apart in the vehicle's front-rear direction. The two ends of the rear floor seat crossmember 1212 respectively extend to the corresponding inner panels 123 of the rear wheel housings. Among them, in combination with Figure 9 As shown, the rear roof crossmember 32, the D-pillars on both left and right sides, and the rear under crossmember 5 form a closed vertical loop (i.e., a ring structure with the center line generally located in the X-axis direction), which is also the fifth vertical loop in the following text (i.e., Figure 11 the loop P in), the front floor seat crossmember 112, the rear floor front crossmember 1211, and the sill beams 22 on both left and right sides form a fourth horizontal loop (i.e., Figure 10 the loop H in), the rear floor front crossmember 1211, the rear under crossmember 5, and the inner panels 123 of the rear wheel housings on both left and right sides form a fifth horizontal loop (i.e., Figure 11 the loop J in). Thus, when the vehicle is subjected to a side impact, the side impact force can be transmitted to these two closed horizontal loops (as shown by the blue arrows in Figure 12 ), which is convenient for the body-in-white frame structure to better absorb the collision energy, improve the safety performance of the body-in-white frame structure. At the same time, it can also increase the coverage of the closed-loop collision force transmission path in the body-in-white, thereby improving the collision performance of the body-in-white.

[0068] Optionally, in combination with Figure 1 、 Figure 7 and Figure 8 As shown, the body-in-white frame structure further includes a front engine compartment frame assembly 4. The front engine compartment frame assembly 4 includes a windshield lower trim panel 41, two engine compartment longitudinal beams 42, two shock towers 43, and a cross bar 44 arranged in the vehicle's left-right direction. The shock towers 43 are cast aluminum parts. The lower ends of the shock towers 43 are connected to the corresponding engine compartment longitudinal beams 42. The two ends of the cross bar 44 are respectively connected to the upper ends of the two shock towers 43. The two ends of the cross bar 44 are also connected to the windshield lower trim panel 41. The two ends of the windshield lower trim panel 41 in the vehicle's left-right direction are respectively connected to the corresponding single-door ring structures 21. Among them, the windshield lower trim panel 41 refers to the water trough structure under the vehicle's front windshield. The two ends of the windshield lower trim panel 41 in the vehicle's left-right direction are respectively connected to the corresponding A-pillars.

[0069] In this alternative embodiment, the windshield lower garnish 41, the lower sections of the A-pillars on the left and right sides, the engine bay longitudinal beams 42 on the left and right sides, and the center tunnel longitudinal beam 111 enclose a closed loop structure. In this way, the coverage of the closed-loop collision force transmission path in the body-in-white is improved, thereby enhancing the collision performance of the body-in-white. Additionally, by arranging the cross tie rod 44 to connect the two shock towers 43, the structural stability of the front engine bay skeleton assembly 4 is enhanced. Moreover, by designing the shock tower 43 as a cast aluminum component, the structural strength of the shock tower 43 is increased and the weight of the shock tower 43 is reduced. At the same time, the proportion of cast aluminum components in the body-in-white can also be increased, thereby minimizing the weight of the body-in-white while ensuring the collision performance.

[0070] Combined with Figure 11 shown, the body-in-white frame structure has multiple longitudinal rings, multiple transverse rings, and multiple vertical rings. Among them, the vertical rings at least include the following five: the windshield lower garnish 41, the lower sections of the A-pillars on the left and right sides, the engine bay longitudinal beams 42 on the left and right sides, and the center tunnel longitudinal beam 111 form the first vertical ring (i.e., Figure 9 ring K in Figure 9 ), the front roof cross member 31, the B-pillars on the left and right sides, and the front floor seat cross beam 112 form the second vertical ring (i.e., Figure 9 ring L in Figure 9 ), the middle roof cross member 34, the C-pillars on the left and right sides, and the front rear floor cross beam 1211 form the third vertical ring (i.e., Figure 9 ring M in Figure 12 ), the middle roof cross member 34, the C-pillars on the left and right sides, the inner wheelhouse panels 123 on the left and right sides, and the rear floor seat cross beam 1212 form the fourth vertical ring (i.e.,

[0071] ring N in Figure 7 ), the rear roof cross member 32, the D-pillars on the left and right sides, and the lower rear body cross member 5 form the fifth vertical ring (i.e.,

[0072] ring P in Figure 7 andFigure 8 As shown, the front engine compartment frame assembly 4 further includes a front engine compartment side reinforcement plate 45. The two ends of the front engine compartment side reinforcement plate 45 in the front-rear direction of the vehicle body are respectively connected to the engine compartment longitudinal beam 42 and the single-door ring structure 21. Moreover, the front engine compartment side reinforcement plate 45, the engine compartment longitudinal beam 42, and the single-door ring structure 21 enclose a closed loop structure. The shock tower 43 is located within the area enclosed by this closed loop structure and is connected to the front engine compartment side reinforcement plate 45. In this way, the vibration force received by the shock tower 43 can be transmitted to the closed force transmission path enclosed by the front engine compartment side reinforcement plate 45, the engine compartment longitudinal beam 42, and the A-pillar for absorption, thereby reducing the vibration noise in the front engine compartment and improving the NVH performance of the whole vehicle.

[0073] Furthermore, the engine compartment longitudinal beam 42 is a hot stamping formed part. In this way, the structural strength of the engine compartment longitudinal beam 42 can be improved, and further the frontal collision performance of the white body can be enhanced.

[0074] A vehicle provided by an embodiment of the present invention includes the white body frame structure as described above.

[0075] The beneficial effects of the vehicle in this embodiment are the same as those of the above-mentioned white body frame structure, and will not be elaborated here.

[0076] Although the present invention is disclosed as above, the protection scope of the present invention is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications will all fall within the protection scope of the present invention.

Claims

1. A body-in-white frame structure, characterized in that: The vehicle comprises a floor frame assembly (1) and a side frame assembly (2), wherein the two ends of the floor frame assembly (1) along the left and right directions of the vehicle body are respectively connected to the side frame assembly (2): The side frame assembly (2) comprises a single door ring structure (21), a closed ring body (23), a rear wheel cover outer panel assembly (24) and a door sill beam (22) which are connected in sequence. The single door ring structure (21) and the closed ring body (23) are both closed ring structures. The door sill beam (22) is connected to the lower end of the single door ring structure (21). The closed ring body (23) and the rear wheel cover outer panel assembly (24) are located on the side of the single door ring structure (21) facing the rear direction of the vehicle. The rear wheel cover outer panel assembly (24) is located below the closed ring body (23) and forms a closed ring with the closed ring body (23). The single door ring structure (21) forms a first door opening. The single door ring structure (21), the closed ring body (23), the rear wheel cover outer panel assembly (24) and the door sill beam (22) together form a second door opening. The floor frame assembly (1) comprises a front floor frame assembly (11) and a rear floor frame assembly (12); the front floor frame assembly (11) is connected to the door sill beam (22) at both ends along the left and right directions of the vehicle body; the rear floor frame assembly (12) is connected to the corresponding rear wheel cover outer panel assembly (24) at both ends along the left and right directions of the vehicle body; and the rear floor frame assembly (12) and the closed ring body (23) are both castings.

2. The body-in-white frame structure according to claim 1, characterized in that: The single door ring structure (21) comprises a door ring outer panel (211), the door ring outer panel (211) comprising an A-pillar outer panel (2111) and a B-pillar outer panel (2112), the upper end of the A-pillar outer panel (2111) is welded to the upper end of the B-pillar outer panel (2112), and the lower end of the A-pillar outer panel (2111) is welded to the lower end of the B-pillar outer panel (2112), the upper end of the B-pillar outer panel (2112) is extended along the front-rear direction of the vehicle body toward the rear direction of the vehicle body, and is connected to the closed ring body (23), and the door ring outer panel (211) is obtained by welding the A-pillar outer panel (2111) and the B-pillar outer panel (2112) together and then hot stamping the whole piece.

3. The body-in-white frame structure according to claim 2, characterized in that: The single door ring structure (21) further comprises a door ring inner plate (212) connected to the inner side of the door ring outer plate (211), the door ring inner plate (212) comprising an upper section of the door ring inner plate (2121), an A-pillar inner plate lower section (2122) arranged opposite to the lower section of the A-pillar outer plate (2111), and a B-pillar inner plate middle section (2123) arranged opposite to the middle section of the B-pillar outer plate (2112), the upper section of the door ring inner plate (2121) comprises an A-pillar inner panel upper section (2121a) and a B-pillar inner panel upper section (2121b), wherein the door ring inner panel upper section (2121) is obtained by hot stamping the material sheet of the A-pillar inner panel upper section (2121a) and the material sheet of the B-pillar inner panel upper section (2121b) after welding, and the A-pillar inner panel lower section (2122) and the B-pillar inner panel middle section (2123) are respectively connected to the door sill beam (22).

4. The body-in-white frame structure according to claim 1, characterized in that: The closed ring body (23) comprises a C-pillar upper section (231), a D-pillar upper section (232) and a reinforcing plate (233) which are sequentially connected to form a closed ring structure, and the connection between the C-pillar upper section (231) and the reinforcing plate (233) and the connection between the D-pillar upper section (232) and the reinforcing plate (233) are respectively connected to the rear wheel housing outer panel assembly (24).

5. The body-in-white frame structure according to claim 4, characterized in that: The rear wheel housing outer panel assembly (24) comprises a C-pillar lower section (241), a D-pillar lower section (242) and a rear wheel housing outer panel (243) respectively connected to the rear floor frame assembly (12); the C-pillar lower section (241) is connected to the door sill beam (22) and to the connection between the C-pillar upper section (231) and the reinforcing plate (233); the D-pillar lower section (242) is connected to the connection between the D-pillar upper section (232) and the reinforcing plate (233); and the C-pillar lower section (241) and the D-pillar lower section (242) are respectively connected to the rear wheel housing outer panel (243).

6. The body-in-white frame structure according to claim 1, characterized in that: It also includes a roof frame assembly (3), the roof frame assembly (3) including a roof front cross beam (31) and a roof rear cross beam (32), the two ends of the roof front cross beam (31) along the left and right directions of the vehicle body are respectively connected to the upper end of the corresponding single door ring structure (21), and the two ends of the roof rear cross beam (32) along the left and right directions of the vehicle body are respectively connected to the corresponding closed ring body (23).

7. The body-in-white frame structure according to claim 6, characterized in that: The roof frame assembly (3) further comprises an integrally formed sunroof reinforcement ring (33) and a roof middle crossbeam (34) arranged between the roof front crossbeam (31) and the roof rear crossbeam (32); the two ends of the roof middle crossbeam (34) along the left-right direction of the vehicle body are respectively connected to the corresponding closed ring body (23); the sunroof reinforcement ring (33) is arranged between the roof front crossbeam (31) and the roof middle crossbeam (34); the two ends of the sunroof reinforcement ring (33) along the front-rear direction of the vehicle body are respectively connected to the roof front crossbeam (31) and the roof middle crossbeam (34); and the two ends of the sunroof reinforcement ring (33) along the left-right direction of the vehicle body are respectively connected to the corresponding single door ring structure (21).

8. The body-in-white frame structure according to claim 1, characterized in that: The vehicle also includes a front cabin frame assembly (4), which includes a lower windshield trim panel (41), two cabin longitudinal beams (42), two shock towers (43), and a transverse tie rod (44) arranged along the left-right direction of the vehicle body. The shock tower (43) is a cast aluminum part. The lower end of the shock tower (43) is connected to the corresponding cabin longitudinal beam (42). The two ends of the transverse tie rod (44) are respectively connected to the upper ends of the two shock towers (43). The two ends of the transverse tie rod (44) are also connected to the lower windshield trim panel (41). The two ends of the lower windshield trim panel (41) along the left-right direction of the vehicle body are respectively connected to the corresponding single door ring structure (21).

9. The body-in-white frame structure according to claim 8, characterized in that: The front cabin frame assembly (4) further comprises a front cabin side reinforcement plate (45), opposite ends of the front cabin side reinforcement plate (45) are respectively connected to the cabin longitudinal beam (42) and the single door ring structure (21), and the front cabin side reinforcement plate (45), the cabin longitudinal beam (42) and the single door ring structure (21) form a closed ring structure, and the shock absorbing tower (43) is located in the area surrounded by the closed ring structure and is connected to the front cabin side reinforcement plate (45).

10. A vehicle, characterized in that: It comprises a body-in-white frame structure as claimed in any one of claims 1 to 9.

Images