Chassis frame, chassis assembly, vehicle

Abstract

The application discloses a chassis frame, a chassis assembly and a vehicle, and relates to the technical field of chassis frames.The chassis frame comprises a middle frame, a front subframe assembly and a rear subframe assembly, the front subframe assembly is connected to the front side of the middle frame, and the rear subframe assembly is connected to the rear side of the middle frame; the front subframe assembly comprises a front subframe and a front shock absorber tower seat, and the front shock absorber tower seat is arranged on the front subframe; the rear subframe assembly comprises a rear subframe and a rear shock absorber tower seat, and the rear shock absorber tower seat is arranged on the rear subframe.The chassis frame according to the embodiment of the application is integrated into a whole through mutual connection of the middle frame, the front subframe assembly and the rear subframe assembly, the rigidity and the strength of the chassis frame as a whole can be improved, the fatigue endurance performance and the collision safety performance of the chassis frame can be improved, and therefore the overall performance of the vehicle can be improved.

Description

Technical Field

[0001] This invention relates to the field of vehicles, and more particularly to a chassis frame, chassis assembly, and vehicle. Background Technology

[0002] In related technologies, the rigidity and strength of the vehicle chassis frame are relatively low, making it difficult to efficiently achieve the desired fatigue durability and collision safety performance. Therefore, improvements are needed. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a chassis frame in which the central frame, the front subframe assembly, and the rear subframe assembly are interconnected and integrated into a whole, which can improve the overall rigidity and strength of the chassis frame, and improve the fatigue durability and collision safety performance of the chassis frame, thereby improving the overall vehicle performance.

[0004] The present invention also proposes a chassis assembly having the above-described chassis frame.

[0005] The present invention also proposes a vehicle having the above-described chassis assembly.

[0006] According to a first aspect of the present invention, a chassis frame includes: a central frame; a front subframe assembly connected to the front side of the central frame and including a front subframe and a front shock absorber tower mount, the front shock absorber tower mount being disposed on the front subframe; and a rear subframe assembly connected to the rear side of the central frame and including a rear subframe and a rear shock absorber tower mount, the rear shock absorber tower mount being disposed on the rear subframe.

[0007] According to the chassis frame of the present invention, by connecting the front subframe assembly to the front side of the middle frame and the rear subframe assembly to the rear side of the middle frame, the middle frame, the front subframe assembly, and the rear subframe assembly are integrated into a whole through mutual connection. The middle frame, the front subframe assembly, and the rear subframe assembly can simultaneously disperse the action of external forces and resist the action of external forces, thereby improving the overall rigidity and strength of the chassis frame, enhancing the fatigue durability and collision safety performance of the chassis frame, and thus improving the overall vehicle performance.

[0008] According to some embodiments of the present invention, the front subframe includes a front subframe body, the front subframe body includes a front anti-collision crossbeam, two front longitudinal beams and a nacelle lower frame, the front shock absorber tower is connected to the upper surface of the front longitudinal beam, the nacelle lower frame is connected to the front side of the middle frame, the nacelle lower frame includes a front bulkhead crossbeam and two nacelle longitudinal beams, the front anti-collision crossbeam is located in front of the nacelle lower frame, the two front longitudinal beams are connected between the front anti-collision crossbeam and the front bulkhead crossbeam and are spaced apart in the left-right direction, and the two nacelle longitudinal beams are connected between the front bulkhead crossbeam and the middle frame and are spaced apart in the left-right direction.

[0009] According to some embodiments of the present invention, the front subframe includes a front subframe body and a front subframe lower support, the front subframe body is connected to the middle frame, and the front subframe lower support is connected to the lower side of the front subframe body.

[0010] According to some optional embodiments of the present invention, the front subframe lower support is connected to the middle frame.

[0011] According to some optional embodiments of the present invention, the front subframe body includes a front anti-collision crossbeam, two front longitudinal beams, and a lower engine compartment frame. The lower engine compartment frame is connected to the front side of the middle frame. The front anti-collision crossbeam is located in front of the lower engine compartment frame. The two front longitudinal beams are connected between the front anti-collision crossbeam and the lower engine compartment frame and are spaced apart in the left-right direction. The lower support of the front subframe is connected to the lower side of the front longitudinal beams and / or the lower side of the lower engine compartment frame.

[0012] According to some optional embodiments of the present invention, the front subframe lower support includes one or more lower engine compartment crossbeams spaced apart in the longitudinal direction, the lower engine compartment crossbeams being connected to the lower side of the front longitudinal beams, each of the lower engine compartment crossbeams extending in the left-right direction, and the left and right ends of the lower engine compartment crossbeams being respectively connected to the two front longitudinal beams.

[0013] According to some optional embodiments of the present invention, the front subframe lower support includes a plurality of lower engine compartment crossbeams spaced apart in the longitudinal direction and a first reinforcing longitudinal beam, wherein the first reinforcing longitudinal beam connects adjacent lower engine compartment crossbeams.

[0014] According to some optional embodiments of the present invention, the front subframe lower support includes a second reinforcing longitudinal beam, and the second reinforcing longitudinal beam is connected between the lower cabin crossbeam adjacent to the central frame and the central frame.

[0015] According to some embodiments of the present invention, the rear subframe includes a rear subframe body, the rear subframe body includes a rear anti-collision crossbeam, two rear longitudinal beams and a rear floor frame, the rear floor frame is connected to the middle frame, the rear anti-collision crossbeam is located behind the rear floor frame, the two rear longitudinal beams are connected between the rear floor frame and the rear anti-collision crossbeam and are spaced apart in the left-right direction; the rear floor frame includes a rear floor front crossbeam, a rear floor rear crossbeam and two rear floor longitudinal beams, the two rear floor longitudinal beams are spaced apart in the left-right direction, the rear floor front crossbeam and the rear floor rear crossbeam are both connected between the two rear floor longitudinal beams and are spaced apart in the front-rear direction, and the rear shock absorber tower is connected to the upper surface of the rear floor longitudinal beams.

[0016] According to some embodiments of the present invention, the rear subframe includes a rear subframe body, the rear subframe body including a rear anti-collision crossbeam, two rear longitudinal beams and a rear floor frame, the rear floor frame being connected to the middle frame, the rear anti-collision crossbeam being located behind the rear floor frame, and the two rear longitudinal beams being connected between the rear floor frame and the rear anti-collision crossbeam and spaced apart in the left-right direction; the rear floor frame includes a rear floor front crossbeam, a rear floor rear crossbeam and two rear floor longitudinal beams, the two rear floor longitudinal beams being spaced apart in the left-right direction, the rear floor front crossbeam and the rear floor rear crossbeam being connected between the two rear floor longitudinal beams and spaced apart in the front-rear direction; the rear subframe includes a rear floor support, one end of the rear floor support being connected to the rear longitudinal beam and the other end being connected to the rear floor rear crossbeam.

[0017] According to some embodiments of the present invention, the rear subframe includes a rear subframe body, the rear subframe body including a rear anti-collision crossbeam, two rear longitudinal beams and a rear floor frame, the rear floor frame being connected to the central frame, the rear anti-collision crossbeam being located behind the rear floor frame, and the two rear longitudinal beams being connected between the rear floor frame and the rear anti-collision crossbeam and spaced apart in the left-right direction; the rear floor frame includes a rear floor front crossbeam, a rear floor rear crossbeam and two rear floor longitudinal beams, the two rear floor longitudinal beams being spaced apart in the left-right direction, the rear floor front crossbeam and the rear floor rear crossbeam being connected between the two rear floor longitudinal beams and spaced apart in the front-rear direction; the rear floor frame includes one or more rear floor secondary longitudinal beams spaced apart in the left-right direction, the rear floor secondary longitudinal beams being connected between the rear floor front crossbeam and the rear floor rear crossbeam.

[0018] According to some embodiments of the present invention, the rear floor frame includes a rear floor crossbeam connected between the rear floor longitudinal beam and the rear floor secondary longitudinal beam.

[0019] According to some optional embodiments of the present invention, the rear subframe further includes a third reinforcing longitudinal beam, one end of which is connected to the central frame and the other end of which is connected to the front crossbeam of the rear floor.

[0020] According to some embodiments of the present invention, the rear subframe includes a rear subframe body and a rear subframe lower support, wherein the rear subframe lower support is connected to the lower side of the rear subframe body.

[0021] According to some optional embodiments of the present invention, the rear subframe body includes a rear anti-collision crossbeam, two rear longitudinal beams, and a rear floor frame. The rear floor frame is connected to the middle frame. The rear anti-collision crossbeam is located behind the rear floor frame. The two rear longitudinal beams are connected between the rear floor frame and the rear anti-collision crossbeam and are spaced apart in the left-right direction. The rear floor frame includes a rear floor front crossbeam, a rear floor rear crossbeam, and two rear floor longitudinal beams. The two rear floor longitudinal beams are spaced apart in the left-right direction. The rear floor front crossbeam and the rear floor rear crossbeam are both connected between the two rear floor longitudinal beams and are spaced apart in the front-rear direction. The lower support of the rear subframe includes a rear floor lower reinforcing beam, which is connected to the lower side of the rear floor rear crossbeam.

[0022] According to some optional embodiments of the present invention, the rear subframe lower support includes a rear floor lower support beam, one end of which is connected to the rear floor lower reinforcing beam and the other end of which is connected to the rear floor front crossbeam.

[0023] According to some optional embodiments of the present invention, the central frame includes two door sills, a front floor crossbeam, at least one seat crossbeam, and a rear floor crossbeam. The two door sills are spaced apart in the left-right direction, and the front floor crossbeam, at least one seat crossbeam, and the rear floor crossbeam are spaced apart in the front-rear direction. The front floor crossbeam is connected to the front subframe, and the rear floor crossbeam is connected to the rear subframe.

[0024] According to a second aspect of the present invention, a chassis assembly includes: a chassis frame as described in a first aspect of the present invention; a front suspension assembly disposed on the front subframe assembly; a rear suspension assembly disposed on the rear subframe assembly; and a power battery pack disposed on the central frame.

[0025] According to an embodiment of the present invention, the chassis assembly is provided with a chassis frame. This chassis frame connects the front subframe assembly to the front side of the central frame and the rear subframe assembly to the rear side of the central frame, thereby integrating the central frame, the front subframe assembly, and the rear subframe assembly into a whole through mutual connection. The central frame, the front subframe assembly, and the rear subframe assembly can simultaneously disperse the action of external forces and resist the action of external forces, thereby improving the overall rigidity and strength of the chassis frame. This can improve the fatigue durability and collision safety performance of the chassis frame, thereby improving the overall vehicle performance.

[0026] A vehicle according to a third aspect of the present invention includes: a chassis assembly according to a second aspect of the present invention; and a vehicle body disposed on the chassis assembly.

[0027] According to an embodiment of the present invention, a chassis assembly is provided in which the chassis frame is connected to the front side of the central frame by connecting the front subframe assembly to the front side of the central frame and the rear subframe assembly to the rear side of the central frame, so that the central frame, the front subframe assembly and the rear subframe assembly are integrated into a whole by interconnection. The central frame, the front subframe assembly and the rear subframe assembly can simultaneously disperse the action of external forces and resist the action of external forces, thereby improving the overall rigidity and strength of the chassis frame, thereby improving the fatigue durability performance, collision safety performance and other aspects of the chassis frame, and further improving the overall vehicle performance.

[0028] According to some embodiments of the present invention, the vehicle body is directly connected to the chassis frame.

[0029] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0030] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0031] Figure 1 This is a three-dimensional structural schematic diagram of a chassis frame according to some embodiments of the present invention;

[0032] Figure 2 yes Figure 1 A three-dimensional structural diagram of the mid-chassis frame from another angle;

[0033] Figure 3 This is a three-dimensional structural schematic diagram of a chassis assembly according to some embodiments of the present invention;

[0034] Figure 4 yes Figure 3A three-dimensional structural diagram of the chassis assembly from another angle;

[0035] Figure 5 This is a schematic diagram of the connection between the vehicle body and the chassis frame of a vehicle according to some embodiments of the present invention.

[0036] Figure label:

[0037] 100. Chassis frame;

[0038] 1. Mid-frame; 11. Threshold; 111. Left sill; 12. Seat crossbeam; 13. Front floor front crossbeam; 14. Front floor rear crossbeam;

[0039] 2. Front subframe assembly; 21. Front subframe; 211. Front subframe main body; 4. Front anti-collision crossbeam; 5. Front longitudinal beam; 6. Engine compartment lower frame; 61. Bulkhead crossbeam; 62. Engine compartment longitudinal beam; 212. Front subframe lower support; 7. Engine compartment lower crossbeam; 8. First reinforcing longitudinal beam; 9. Second reinforcing longitudinal beam; 22. Front shock absorber tower;

[0040] 3. Rear subframe assembly; 31. Rear subframe; 311. Rear subframe main body; 40. Rear bumper crossbeam; 50. Rear longitudinal beam; 60. Rear floor frame; 63. Rear floor front crossbeam; 64. Rear floor rear crossbeam; 65. Rear floor longitudinal beam; 66. Rear floor secondary longitudinal beam; 67. Rear floor minor crossbeam; 68. Third reinforcing longitudinal beam; 312. Rear floor rear support; 313. Rear subframe lower support; 80. Rear floor lower reinforcing beam; 90. Rear floor lower support beam; 32. Rear shock absorber tower mount;

[0041] 200. Chassis assembly;

[0042] 10. Power battery pack;

[0043] 20. Front suspension assembly;

[0044] 30. Rear suspension assembly;

[0045] 300. Vehicle body. Detailed Implementation

[0046] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0047] The following is for reference. Figures 1-4 A chassis frame 100 according to an embodiment of the present invention is described.

[0048] In embodiments of the present invention, the following front-to-back direction refers to the length direction of the vehicle, the left-to-right direction refers to the width direction of the vehicle, and the up-down direction refers to the height direction of the vehicle.

[0049] refer to Figures 1-4 According to a first aspect of the present invention, a chassis frame 100 includes a central frame 1, a front subframe assembly 2, and a rear subframe assembly 3. The front subframe assembly 2 is connected to the front side of the central frame 1, and the rear subframe assembly 3 is connected to the rear side of the central frame 1. By connecting the central frame 1, the front subframe assembly 2, and the rear subframe assembly 3 together into a single unit, the overall rigidity and strength of the chassis frame 100 can be improved. The front subframe assembly 2 includes a front subframe 21 and a front shock absorber tower mount 22. The front shock absorber tower mount 22 is disposed on the front subframe 21, and the front shock absorber tower mount 22 helps to improve the damping effect of the front shock absorber, thereby improving the ride comfort of the vehicle. The rear subframe assembly 3 includes a rear subframe 31 and a rear shock absorber tower 32. The rear shock absorber tower 32 is located on the rear subframe 31 and helps to improve the shock absorption effect of the rear shock absorber, thereby improving the ride comfort of the vehicle. By placing the front shock absorber tower 22 on the front subframe 21 and the rear shock absorber tower 32 on the rear subframe 31, and integrating the front shock absorber tower 22 and the rear shock absorber tower 32 into the chassis frame 100, this arrangement is more modular and helps to improve the assembly efficiency of the vehicle.

[0050] According to an embodiment of the present invention, the chassis frame 100 connects the front subframe assembly 2 to the front side of the middle frame 1 and the rear subframe assembly 3 to the rear side of the middle frame 1, thereby integrating the middle frame 1, the front subframe assembly 2, and the rear subframe assembly 3 into a whole through mutual connection. The middle frame 1, the front subframe assembly 2, and the rear subframe assembly 3 can simultaneously disperse the action of external forces and resist the action of external forces, thereby improving the overall rigidity and strength of the chassis frame 100, and improving the fatigue durability performance and collision safety performance of the chassis frame 100, thereby improving the overall vehicle performance.

[0051] refer to Figures 1-4 According to some embodiments of the present invention, the front subframe 21 includes a front subframe body 211, the front subframe body 211 includes a front anti-collision crossbeam 4, two front longitudinal beams 5 and a lower engine compartment frame 6, the front shock absorber tower 22 is connected to the upper surface of the front longitudinal beams 5, the lower engine compartment frame 6 is connected to the front side of the middle frame 1, the lower engine compartment frame 6 includes a front bulkhead crossbeam 61 and two engine compartment longitudinal beams 62, the front anti-collision crossbeam 4 is located in front of the lower engine compartment frame 6, the two front longitudinal beams 5 are connected between the front anti-collision crossbeam 4 and the front bulkhead crossbeam 61 and are spaced apart in the left and right direction, and the two engine compartment longitudinal beams 62 are connected between the front bulkhead crossbeam 61 and the middle frame 1 and are spaced apart in the left and right direction.

[0052] By including a front anti-collision crossbeam 4, two front longitudinal beams 5, and a lower engine compartment frame 6 in the front subframe body 211, the front anti-collision crossbeam 4, the two front longitudinal beams 5, and the two engine compartment longitudinal beams 62 of the lower engine compartment frame 6 can improve the rigidity and strength of the chassis frame 100 in the front and rear directions. The front anti-collision crossbeam 4 can absorb external impacts on the front side of the chassis frame 100. The two front longitudinal beams 5 and the lower engine compartment frame 6 can also disperse external impacts together with the front anti-collision crossbeam 4, reducing the adverse effects on the chassis frame 100 when the front side of the chassis frame 100 is subjected to external forces, so as to avoid damage to the chassis frame 100 (such as deformation or breakage), and improve the stability of the chassis frame 100 during use. Furthermore, the two longitudinal beams 62 of the lower frame 6 of the engine compartment can stably connect the main body 211 of the front subframe to the middle frame 1, improve the uniformity of rigidity and strength between the front subframe 21 and the middle frame 1, and reduce the occurrence of local severe deformation or breakage of the chassis frame 100.

[0053] refer to Figures 1-4 According to some embodiments of the present invention, the front subframe 21 includes a front subframe body 211 and a front subframe lower support 212. The front subframe body 211 is connected to the middle frame 1, so that the front subframe 21 can be stably connected to the middle frame 1. The front subframe lower support 212 is connected to the lower side of the front subframe body 211. By setting the front subframe body 211 and the front subframe lower support 212, the front subframe body 211 and the front subframe lower support 212 can be used to support the front suspension system of the vehicle and connect the vehicle body 300, etc., eliminating the need for additional functional modules attached to the front subframe 21 for support, which helps to reduce the overall weight of the vehicle, achieve vehicle lightweighting, and thereby improve the vehicle's acceleration, braking, handling, and range performance. The front subframe body 211 and the front subframe lower support 212 can improve the rigidity and strength of the chassis frame 100 in the vertical direction, so as to improve the uniformity of the overall rigidity and strength of the front subframe 21 and reduce or avoid defects such as local cracks, local deformation or local breakage in the front subframe body 211 or the front subframe lower support 212 during the use of the chassis frame 100.

[0054] Optionally, the front subframe body 211 and the front subframe lower support 212 can be used to support the double wishbone suspension system, and the front shock absorber tower 22 is used to improve the damping effect of the shock absorber in the double wishbone suspension system.

[0055] refer to Figures 1-4 According to some optional embodiments of the present invention, the lower support 212 of the front subframe is connected to the middle frame 1. By connecting the lower support 212 of the front subframe to the middle frame 1, the connection strength between the front subframe 21 and the middle frame 1 can be further improved, avoiding connection failure between the front subframe 21 and the middle frame 1 during the use of the chassis frame 100.

[0056] refer to Figures 1-4 According to some optional embodiments of the present invention, the front subframe body 211 includes a front anti-collision crossbeam 4, two front longitudinal beams 5, and a lower engine compartment frame 6. The lower engine compartment frame 6 is connected to the front side of the middle frame 1. The front anti-collision crossbeam 4 is located in front of the lower engine compartment frame 6. The two front longitudinal beams 5 are connected between the front anti-collision crossbeam 4 and the lower engine compartment frame 6 and are spaced apart in the left-right direction. The front subframe lower support 212 is connected to the lower side of the front longitudinal beams 5. By connecting the front subframe lower support 212 to the lower side of the front longitudinal beams 5, the front subframe lower support 212 can strengthen and support the front longitudinal beams 5 in the vertical direction, thereby improving the stiffness and strength of the two front longitudinal beams 5 in the vertical direction, and thus improving the stiffness and strength of the front subframe body 211 in the vertical direction, as well as the overall stiffness and strength of the front subframe 211.

[0057] refer to Figures 1-4 According to some optional embodiments of the present invention, the front subframe body 211 includes a front anti-collision crossbeam 4, two front longitudinal beams 5, and a lower engine compartment frame 6. The lower engine compartment frame 6 is connected to the front side of the middle frame 1. The front anti-collision crossbeam 4 is located in front of the lower engine compartment frame 6. The two front longitudinal beams 5 are connected between the front anti-collision crossbeam 4 and the lower engine compartment frame 6 and are spaced apart in the left-right direction. The front subframe lower support 212 is connected to the lower side of the front longitudinal beams 5 and / or the lower side of the lower engine compartment frame 6. By connecting the front subframe lower support 212 to the lower side of the lower engine compartment frame 6, the front subframe lower support 212 can strengthen and support the lower engine compartment frame 6 in the vertical direction, thereby improving the rigidity and strength of the lower engine compartment frame 6, and thus improving the rigidity and strength of the front subframe body 211 in the vertical direction, as well as the overall rigidity and strength of the front subframe 21.

[0058] refer to Figures 1-4 According to some optional embodiments of the present invention, the front subframe lower support 212 includes one or more lower engine compartment crossbeams 7 spaced apart in the longitudinal direction. The lower engine compartment crossbeams 7 are connected to the lower side of the front longitudinal beams 5. Each lower engine compartment crossbeam 7 extends in the left-right direction, and its left and right ends are respectively connected to two front longitudinal beams 5. By providing one or more lower engine compartment crossbeams 7 extending in the left-right direction, the rigidity and strength of the front subframe lower support 212 and the overall rigidity and strength of the front subframe 21 can be improved. During the use of the chassis frame 100, the lower engine compartment crossbeams 7 can be used to resist the lateral loads in the left-right direction generated by the front suspension system on the front subframe 21, reducing or avoiding cracks, deformation, breakage, etc. in the front subframe 21.

[0059] refer to Figures 1-4According to some optional embodiments of the present invention, the front subframe lower support 212 includes a plurality of lower engine compartment crossbeams 7 spaced apart in the longitudinal direction and a first reinforcing longitudinal beam 8, with the first reinforcing longitudinal beam 8 connecting adjacent lower engine compartment crossbeams 7. By providing the first reinforcing longitudinal beam 8, the stiffness and strength of the front subframe lower support 212 in the longitudinal direction can be improved. During the use of the chassis frame 100, the first reinforcing longitudinal beam 8 can be used to resist the longitudinal load in the longitudinal direction generated by the front suspension system on the front subframe 21, reducing or avoiding cracks, deformation, breakage, etc. of the front subframe 21. When the front side of the chassis frame 100 is subjected to a high-speed collision, the first reinforcing longitudinal beam 8 can absorb the energy generated by the collision, reducing the degree of crushing deformation of the front subframe 21.

[0060] refer to Figures 1-4 According to some optional embodiments of the present invention, the front subframe lower support 212 includes a second reinforcing longitudinal beam 9, which connects the lower engine compartment crossbeam 7 adjacent to the central frame 1 to the central frame 1. By providing the second reinforcing longitudinal beam 9, the stiffness and strength of the front subframe lower support 212 in the longitudinal direction can be improved. During the use of the chassis frame 100, the second reinforcing longitudinal beam 9 can be used to resist the longitudinal load in the longitudinal direction generated by the front suspension system on the front subframe 21, reducing or avoiding cracks, deformation, fractures, etc. of the front subframe 21. When the front side of the chassis frame 100 is subjected to a high-speed collision, the second reinforcing longitudinal beam 9 can absorb the energy generated by the collision, reducing the degree of crushing deformation of the front subframe 21. Furthermore, the second reinforcing longitudinal beam 9 connects the lower crossbeam 7 of the engine compartment adjacent to the central frame 1 and the central frame 1. The lower support 212 of the front subframe is connected to the central frame 1 via the second reinforcing longitudinal beam 9. The second reinforcing longitudinal beam 9 can improve the connection strength between the front subframe 21 and the central frame 1, so that the stiffness and strength among the various parts of the chassis frame 100 are more uniform. During the use of the chassis frame 100, connection failure at the connection between the front subframe 21 and the central frame 1 is avoided. When the front of the chassis frame 100 suffers a high-speed collision, the central frame can also disperse and absorb some of the energy generated by the collision, further reducing the degree of crushing deformation of the front subframe 21.

[0061] refer to Figures 1-4According to some embodiments of the present invention, the rear subframe 31 includes a rear subframe body 311, which includes a rear anti-collision crossbeam 40, two rear longitudinal beams 50, and a rear floor frame 60. The rear floor frame 60 is connected to the middle frame 1. The rear anti-collision crossbeam 40 is located behind the rear floor frame 60. The two rear longitudinal beams 50 are connected between the rear floor frame 60 and the rear anti-collision crossbeam 40 and are spaced apart in the left-right direction. The rear floor frame 60 includes a rear floor front crossbeam 63, a rear floor rear crossbeam 64, and two rear floor longitudinal beams 65. The two rear floor longitudinal beams 65 are spaced apart in the left-right direction. The rear floor front crossbeam 63 and the rear floor rear crossbeam 64 are both connected between the two rear floor longitudinal beams 65 and are spaced apart in the front-rear direction. The rear shock absorber tower 32 is connected to the upper surface of the rear floor longitudinal beams 65. By including a rear anti-collision crossbeam 40, two rear longitudinal beams 50, and a rear floor frame 60 in the rear subframe body 311, the rear anti-collision crossbeam 40, two rear longitudinal beams 50, and rear floor frame 60 can improve the rigidity and strength of the chassis frame 100 in the front and rear directions. The rear anti-collision crossbeam 40 can absorb external impacts on the rear side of the chassis frame 100. The two rear longitudinal beams 50 and the rear floor frame 60 can also disperse external impacts together with the rear anti-collision crossbeam 40, reducing the adverse effects on the chassis frame 100 when the rear side of the chassis frame 100 is subjected to external forces, so as to avoid damage to the chassis frame 100 (such as deformation or breakage), and improve the stability of the chassis frame 100 during use. The two rear floor longitudinal beams 50 of the rear floor frame 60 can disperse external impacts together with the rear anti-collision crossbeam 40 and the two rear longitudinal beams 50. The two rear floor longitudinal beams 65 of the rear floor frame 60 can stably connect the rear subframe body 311 to the middle frame 1, improve the uniformity of rigidity and strength between the rear subframe 31 and the middle frame 1, and reduce the occurrence of local severe deformation or breakage of the chassis frame 100.

[0062] refer to Figures 1-4According to some embodiments of the present invention, the rear subframe 31 includes a rear subframe body 311, which includes a rear anti-collision crossbeam 40, two rear longitudinal beams 50, and a rear floor frame 60. The rear floor frame 60 is connected to the middle frame 1. The rear anti-collision crossbeam 40 is located behind the rear floor frame 60. The two rear longitudinal beams 50 are connected between the rear floor frame 60 and the rear anti-collision crossbeam 40 and are spaced apart in the left-right direction. The rear floor frame 60 includes a rear floor front crossbeam 63, a rear floor rear crossbeam 64, and two rear floor longitudinal beams 65. The two rear floor longitudinal beams 65 are spaced apart in the left-right direction. The rear floor front crossbeam 63 and the rear floor rear crossbeam 64 are both connected between the two rear floor longitudinal beams 65 and are spaced apart in the front-rear direction. The rear subframe 31 includes a rear floor support 312, one end of which is connected to the rear longitudinal beam 50 and the other end of which is connected to the rear floor rear crossbeam 64. By setting the rear floor support 312, the rear floor support 312 can simultaneously strengthen the rear longitudinal beam 50 and the rear floor crossbeam 64, thereby enhancing the rigidity and strength of the rear longitudinal beam 50 and the rear floor frame 60, and also strengthening the connection strength between the rear longitudinal beam 50 and the rear floor frame 60.

[0063] refer to Figures 1-4 According to some embodiments of the present invention, the rear subframe 31 includes a rear subframe body 311, which includes a rear anti-collision crossbeam 40, two rear longitudinal beams 50, and a rear floor frame 60. The rear floor frame 60 is connected to the middle frame 1. The rear anti-collision crossbeam 40 is located behind the rear floor frame 60. The two rear longitudinal beams 50 are connected between the rear floor frame 60 and the rear anti-collision crossbeam 40 and are spaced apart in the left-right direction. The rear floor frame 60 includes a rear floor front crossbeam 63, a rear floor rear crossbeam 64, and two rear floor longitudinal beams 65. The two rear floor longitudinal beams 65 are spaced apart in the left-right direction. The rear floor front crossbeam 63 and the rear floor rear crossbeam 64 are both connected between the two rear floor longitudinal beams 65 and are spaced apart in the front-rear direction. The rear floor frame 60 includes one or more rear floor secondary longitudinal beams 66 spaced apart in the left-right direction. The rear floor secondary longitudinal beams 66 are connected between the rear floor front crossbeam 63 and the rear floor rear crossbeam 64. By setting one or more rear floor sub-longitudinal beams 66, the rear floor sub-longitudinal beams 66 provide support and reinforcement to the rear floor front crossbeam 63 and rear floor rear crossbeam 64, thereby improving the rigidity and strength of the rear floor frame 60. They can also work with the two rear floor longitudinal beams 65 to disperse and resist external impacts in the longitudinal direction. During the use of the chassis frame 100, the rear floor sub-longitudinal beams 66 can reduce or prevent deformation, cracks, and breakage of the rear floor frame 60.

[0064] refer to Figures 1-4According to some embodiments of the present invention, the rear floor frame 60 includes a rear floor crossbeam 67, which connects the rear floor longitudinal beam 65 and the rear floor secondary longitudinal beam 66. For example, the rear floor frame 60 includes two rear floor crossbeams 67. By providing the rear floor crossbeams 67, the rear floor longitudinal beam 65 and the rear floor secondary longitudinal beam 66 can be reinforced, thereby increasing the rigidity and strength of the rear floor frame 60, and thus increasing the rigidity and strength of the rear subframe 31. During the use of the chassis frame 100, the rear floor crossbeams 67 can be used to resist the lateral loads in the left-right direction generated by the rear suspension system on the rear subframe 31, reducing or avoiding cracks, deformation, breakage, etc. in the rear subframe 31.

[0065] refer to Figures 1-4 According to some optional embodiments of the present invention, the rear subframe 31 further includes a third reinforcing longitudinal beam 68. For example, the rear subframe 31 includes two third reinforcing longitudinal beams 68. One end of the third reinforcing longitudinal beam 68 is connected to the central frame 1, and the other end of the third reinforcing longitudinal beam 68 is connected to the front crossbeam 63 of the rear floor. By providing the third reinforcing longitudinal beam 68, the stiffness and strength of the rear floor frame of the rear subframe 31 in the longitudinal direction can be improved. During the use of the chassis frame 100, the third reinforcing longitudinal beam 68 can be used to resist the longitudinal load in the longitudinal direction generated by the front suspension system on the rear subframe 31, reducing or avoiding cracks, deformation, breakage, etc. of the rear subframe 31. When the rear side of the chassis frame 100 is subjected to a high-speed collision, the third reinforcing longitudinal beam 68 can absorb the energy generated by the collision, reducing the degree of crush deformation of the rear subframe 31. The rear floor frame 60 is connected to the central frame 1 via a third reinforcing longitudinal beam 68. The third reinforcing longitudinal beam 68 enhances the connection strength between the rear subframe 31 and the central frame 1, resulting in more uniform stiffness and strength across the various parts of the chassis frame 100. This prevents connection failure at the junction of the rear subframe 31 and the central frame 1 during the use of the chassis frame 100. In the event of a high-speed collision at the rear of the chassis frame 100, the central frame can also disperse and absorb some of the energy generated by the collision, further reducing the degree of crushing deformation of the rear subframe 31.

[0066] refer to Figures 1-4According to some embodiments of the present invention, the rear subframe 31 includes a rear subframe body 311 and a rear subframe lower support 313, the rear subframe lower support 313 being connected to the lower side of the rear subframe body 311. By providing the rear subframe body 311 and the rear subframe lower support 313, the rear subframe body 311 and the rear subframe lower support 313 can be used to support the rear suspension system of the vehicle and connect the vehicle body 300, etc., eliminating the need for additional functional modules for support, which helps to reduce the overall weight of the vehicle, achieve vehicle lightweighting, and thereby improve the vehicle's acceleration, braking, handling, and driving range performance. The rear subframe main body 311 and the rear subframe lower support 313 can improve the rigidity and strength of the chassis frame 100 in the vertical direction, so as to improve the uniformity of the overall rigidity and strength of the rear subframe 31 and avoid defects such as local cracks, local deformation or local breakage in the rear subframe main body 311 or the rear subframe lower support 313 during the use of the chassis frame 100.

[0067] Optionally, the rear subframe body 311 and the rear subframe lower support 313 can be used to support the rear-drive five-link suspension system, and the rear shock absorber tower 32 is used to improve the damping effect of the shock absorber in the rear-drive five-link suspension system.

[0068] refer to Figures 1-4 According to some optional embodiments of the present invention, the rear subframe body 311 includes a rear anti-collision crossbeam 40, two rear longitudinal beams 50, and a rear floor frame 60. The rear floor frame 60 is connected to the middle frame 1. The rear anti-collision crossbeam 40 is located behind the rear floor frame 60. The two rear longitudinal beams 50 are connected between the rear floor frame 60 and the rear anti-collision crossbeam 40 and are spaced apart in the left-right direction. The rear floor frame 60 includes a rear floor front crossbeam 63, a rear floor rear crossbeam 64, and two rear floor longitudinal beams 65. The two rear floor longitudinal beams 65 are spaced apart in the left-right direction. The rear floor front crossbeam 63 and the rear floor rear crossbeam 64 are both connected between the two rear floor longitudinal beams 65 and are spaced apart in the front-rear direction. The rear subframe lower support 313 includes a rear floor lower reinforcing beam 80, which is connected to the lower side of the rear floor rear crossbeam 64. By setting the rear floor lower reinforcing beam 80, the rigidity and strength of the rear floor lower support can be improved. The rear floor lower reinforcing beam 80 is connected to the lower side of the rear floor rear crossbeam 64. The rear subframe lower support 313 can strengthen and support the rear floor frame 60 in the vertical direction through the rear floor lower reinforcing beam 80, which can improve the vertical rigidity and strength of the rear floor frame 60 of the rear subframe 31, thereby improving the overall rigidity and strength of the rear subframe 31. During the use of the chassis frame 100, when the rear side of the chassis frame 100 is subjected to a high-speed collision, the rear floor lower reinforcing beam 80 can protect the suspension system and other components located on the rear subframe 31 from or reduce the damage caused by the collision.

[0069] refer to Figures 1-4 According to some optional embodiments of the present invention, the rear subframe lower support 313 includes a rear floor lower support beam 90. For example, the rear subframe lower support 313 includes two rear floor lower support beams 90, one end of which is connected to the rear floor lower reinforcing beam 80 and the other end is connected to the rear floor front crossbeam 63. By providing the rear floor lower support beams 90, the stiffness and strength of the rear subframe 31 in the longitudinal and lateral directions can be improved. During the use of the chassis frame 100, when the rear side of the chassis frame 100 is subjected to a high-speed collision, the rear floor lower support beams 90 can absorb the energy generated by the collision, reduce the degree of crushing deformation of the rear subframe 31, thereby protecting the rear suspension system and other components located on the rear subframe 31 from or mitigating damage after a collision.

[0070] refer to Figures 1-4 According to some optional embodiments of the present invention, the central frame 1 includes two door sills 11, a front floor crossbeam 13, at least one seat crossbeam 12, and a rear floor crossbeam 14. The two door sills 11 are spaced apart in the left-right direction, for example, the door sills 11 are formed as extruded parts. The front floor crossbeam 13, at least one seat crossbeam 12, and the rear floor crossbeam 14 are spaced apart in the front-rear direction. The front floor crossbeam 13 is connected to the front subframe 21, and the rear floor crossbeam 14 is connected to the rear subframe 31. For example, the central frame 1 includes one seat crossbeam 12; for example, the central frame 1 includes two or more seat crossbeams 12. By providing the seat crossbeams 12, support is provided for the seats installed in the vehicle, improving the stability and comfort of the seats. By providing the front floor crossbeam 13 and the rear floor crossbeam 14, it is convenient to form a connection between the central frame 1 and the front subframe 21 and the rear subframe 31. The middle frame 1 has a simple structure and is easy to design and adjust. By adjusting the dimensions of the middle frame 1 in the front and rear directions, the chassis frame 100 can be matched with more different vehicle models.

[0071] refer to Figures 3-4 According to a second aspect embodiment of the present invention, the chassis assembly 200 includes the aforementioned chassis frame 100, power battery pack 10, front suspension assembly 20, and rear suspension assembly 30. The front suspension assembly 20 is disposed on the front subframe assembly 2, the rear suspension assembly 30 is disposed on the rear subframe assembly 3, and the power battery pack 10 is disposed on the central frame 1. For example, the power battery pack 10 includes multiple storage units (e.g., battery cells), which are evenly arranged along the front-rear direction on the central frame 1. This arrangement unifies the arrangement of the storage units, simplifies the complexity of the wiring in the power battery pack 10, and for example simplifies the complexity of the wiring connecting the storage units. When a cooling system is required to dissipate heat from the power battery pack 10, the selection of the location and the method of setting up the cooling system are also simpler.

[0072] According to the chassis assembly 200 of the present invention, by setting the aforementioned chassis frame 100, the chassis frame 100 connects the front subframe assembly 2 to the front side of the middle frame 1 and the rear subframe assembly 3 to the rear side of the middle frame 1, so that the middle frame 1, the front subframe assembly 2, and the rear subframe assembly 3 are integrated into a whole by interconnection. The middle frame 1, the front subframe assembly 2, and the rear subframe assembly 3 can simultaneously disperse the action of external forces and resist the action of external forces, thereby improving the overall rigidity and strength of the chassis frame 100, and improving the fatigue durability performance, collision safety performance, etc. of the chassis frame 100, thereby improving the overall vehicle performance.

[0073] According to a third aspect of the present invention, a vehicle includes the chassis assembly 200 described above, and a body 300 is disposed on the chassis assembly 200.

[0074] According to an embodiment of the present invention, the vehicle is equipped with the aforementioned chassis assembly 200. The chassis frame 100 of the chassis assembly 200 connects the front subframe assembly 2 to the front side of the central frame 1 and the rear subframe assembly 3 to the rear side of the central frame 1, thus integrating the central frame 1, the front subframe assembly 2, and the rear subframe assembly 3 into a single unit. The central frame 1, the front subframe assembly 2, and the rear subframe assembly 3 can simultaneously disperse and resist the effects of external forces, improving the overall rigidity and strength of the chassis frame 100. This enhances the fatigue durability and collision safety performance of the chassis frame 100, and further improves the overall vehicle performance. Furthermore, the high degree of integration of the central frame 1, the front subframe assembly 2, and the rear subframe assembly 3 into a single unit improves assembly efficiency during vehicle production. The chassis frame design also reduces vehicle weight and cost, while improving overall vehicle rigidity, strength, fatigue durability, collision safety, and NVH performance.

[0075] refer to Figure 5According to some embodiments of the present invention, the vehicle body 300 is directly connected to the chassis frame 100. By directly connecting the vehicle body 300 and the chassis frame 100, the vehicle body 300 and the chassis frame 100 form an integral unit, allowing the vehicle body 300 and the chassis frame 100 to jointly bear the various functional components of the vehicle; and the integral formation of the vehicle body 300 and the chassis frame 100 can make the stress on various parts of the vehicle more even, which is beneficial to improving the overall performance of the vehicle. For example, the vehicle body 300 includes a left side outer panel and a left B-pillar inner panel, and the sill 11 of the chassis frame 100 includes a left sill 111. The left side outer panel is connected to one side of the left sill 111 of the chassis frame 100 by fasteners (e.g., FDS connecting screws), and the left B-pillar inner panel is also connected to the other side of the left sill 111 of the chassis frame 100 by fasteners (e.g., FDS connecting screws).

[0076] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0077] In the description of this invention, "first feature" and "second feature" may include one or more of the features.

[0078] In the description of this invention, "a plurality of" means two or more.

[0079] In the description of this invention, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or it may include the first and second features not being in direct contact but being in contact through another feature between them.

[0080] In the description of this invention, the terms "above," "over," and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicating that the first feature is at a higher horizontal level than the second feature.

[0081] Other configurations of the present invention, such as ... and ..., and operations, are known to those skilled in the art and will not be described in detail here.

[0082] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0083] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A chassis frame, characterized in that, include: Mid-frame; A front subframe assembly, connected to the front side of the central frame and including a front subframe and a front shock absorber tower, the front shock absorber tower being disposed on the front subframe; The rear subframe assembly is connected to the rear side of the central frame and includes a rear subframe and a rear shock absorber tower, wherein the rear shock absorber tower is disposed on the rear subframe. The rear subframe includes a rear subframe body, which includes a rear anti-collision crossbeam, two rear longitudinal beams, and a rear floor frame. The rear floor frame is connected to the central frame. The rear anti-collision crossbeam is located behind the rear floor frame. The two rear longitudinal beams are connected between the rear floor frame and the rear anti-collision crossbeam and are spaced apart in the left-right direction. The rear floor frame includes a rear floor front crossbeam, a rear floor rear crossbeam, and two rear floor longitudinal beams. The two rear floor longitudinal beams are spaced apart in the left-right direction. The rear floor front crossbeam and the rear floor rear crossbeam are both connected between the two rear floor longitudinal beams and are spaced apart in the front-rear direction. The rear shock absorber tower is connected to the upper surface of the rear floor longitudinal beams.

2. The chassis frame according to claim 1, characterized in that, The front subframe includes a front subframe body, which includes a front anti-collision crossbeam, two front longitudinal beams, and a nacelle lower frame. The front shock absorber tower is connected to the upper surface of the front longitudinal beams. The nacelle lower frame is connected to the front side of the central frame. The nacelle lower frame includes a front bulkhead crossbeam and two nacelle longitudinal beams. The front anti-collision crossbeam is located in front of the nacelle lower frame. The two front longitudinal beams are connected between the front anti-collision crossbeam and the front bulkhead crossbeam and are spaced apart in the left-right direction. The two nacelle longitudinal beams are connected between the front bulkhead crossbeam and the central frame and are spaced apart in the left-right direction.

3. The chassis frame according to claim 1, characterized in that, The front subframe includes a front subframe body and a front subframe lower support. The front subframe body is connected to the central frame, and the front subframe lower support is connected to the lower side of the front subframe body.

4. The chassis frame according to claim 3, characterized in that, The lower support of the front subframe is connected to the middle frame.

5. The chassis frame according to claim 3, characterized in that, The front subframe body includes a front anti-collision crossbeam, two front longitudinal beams, and a lower engine compartment frame. The lower engine compartment frame is connected to the front side of the middle frame. The front anti-collision crossbeam is located in front of the lower engine compartment frame. The two front longitudinal beams are connected between the front anti-collision crossbeam and the lower engine compartment frame and are spaced apart in the left-right direction. The lower support of the front subframe is connected to the lower side of the front longitudinal beams and / or the lower side of the lower engine compartment frame.

6. The chassis frame according to claim 5, characterized in that, The front subframe lower support includes one or more lower cabin crossbeams spaced apart in the longitudinal direction. The lower cabin crossbeams are connected to the lower side of the front longitudinal beams. Each lower cabin crossbeam extends in the left-right direction, and the left and right ends of the lower cabin crossbeams are respectively connected to the two front longitudinal beams.

7. The chassis frame according to claim 6, characterized in that, The front subframe lower support includes multiple lower cabin crossbeams spaced apart along the front-rear direction and a first reinforcing longitudinal beam, with the first reinforcing longitudinal beam connecting adjacent lower cabin crossbeams.

8. The chassis frame according to claim 6, characterized in that, The front subframe lower support includes a second reinforcing longitudinal beam, and the second reinforcing longitudinal beam is connected between the lower crossbeam of the cabin adjacent to the central frame and the central frame.

9. The chassis frame according to claim 1, characterized in that, The rear subframe includes a rear floor support, one end of which is connected to the rear longitudinal beam and the other end of which is connected to the rear floor crossbeam.

10. The chassis frame according to claim 1, characterized in that, The rear floor frame includes one or more rear floor sub-longitudinal beams spaced apart in the left-right direction, the rear floor sub-longitudinal beams being connected between the rear floor front crossbeam and the rear floor rear crossbeam.

11. The chassis frame according to claim 10, characterized in that, The rear floor frame includes a rear floor crossbeam, which is connected between the rear floor longitudinal beam and the rear floor secondary longitudinal beam.

12. The chassis frame according to claim 10, characterized in that, The rear subframe also includes a third reinforcing longitudinal beam, one end of which is connected to the central frame, and the other end of which is connected to the front crossbeam of the rear floor.

13. The chassis frame according to claim 1, characterized in that, The rear subframe includes a rear subframe body and a rear subframe lower support, with the rear subframe lower support connected to the lower side of the rear subframe body.

14. The chassis frame according to claim 13, characterized in that, The lower support of the rear subframe includes a rear floor lower reinforcing beam, which is connected to the lower side of the rear floor crossbeam.

15. The chassis frame according to claim 14, characterized in that, The rear subframe lower support includes a rear floor lower support beam, one end of which is connected to the rear floor lower reinforcing beam and the other end is connected to the rear floor front crossbeam.

16. The chassis frame according to any one of claims 1-15, characterized in that, The central frame includes two door sills, a front floor crossbeam, at least one seat crossbeam, and a rear floor crossbeam. The two door sills are spaced apart in the left-right direction, and the front floor crossbeam, at least one seat crossbeam, and the rear floor crossbeam are spaced apart in the front-rear direction. The front floor crossbeam is connected to the front subframe, and the rear floor crossbeam is connected to the rear subframe.

17. A chassis assembly, characterized in that, include: Chassis frame according to any one of claims 1-16; The front suspension assembly is located on the aforementioned front subframe assembly; The rear suspension assembly is located on the rear subframe assembly; The power battery pack is located in the central frame.

18. A vehicle, characterized in that, include: Chassis assembly as claimed in claim 17; The vehicle body is mounted on the chassis assembly.

19. The vehicle according to claim 18, characterized in that, The vehicle body is directly connected to the chassis frame.

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