Chassis and vehicle

Abstract

The utility model discloses a chassis and a vehicle. The chassis comprises a longitudinal beam, a front support and a rear support which are arranged at an interval in the front-back direction are arranged on the longitudinal beam; the rear axle assembly comprises a rear axle part and a plate spring part, the front end of the plate spring part is fixedly connected with the front support, a spring eye is arranged at the rear end of the plate spring part, and the spring eye is arranged on the rear support in a winding mode and can rotate relative to the rear support. Therefore, the front end of the plate spring piece is fixedly connected with the front support, and the spring eye at the rear end of the plate spring piece is wound on the rear support and can rotate relative to the rear support, so that not only can the stability of the whole installation and arrangement of the plate spring piece be ensured, but also the plate spring piece can be prevented from being damaged when the plate spring piece is elastically deformed. The rear end of the plate spring piece can correspondingly rotate relative to the rear support, so that a better damping and buffering effect can be achieved, force transmission between the longitudinal beam and the plate spring piece is more balanced, and then the loading capacity and the damping performance of the chassis structure can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a chassis and a vehicle. Background Art

[0002] With the development of technology and the improvement of users' living standards, vehicles have become an essential means of transportation for people. The main function of the front suspension system of a vehicle chassis is to transmit the force and torque between the wheels and the frame, and to relieve the impact force and vibration transmitted from the road surface to the frame or the body. The suspension spring of the vehicle chassis uses its own elastic deformation to bear the bouncing of the axle.

[0003] In the related art, the connection between the suspension spring of the vehicle chassis and the chassis is a rigid connection and cannot move relatively. In this way, the suspension spring can only buffer and damp vibration through its own deformation, and the damping performance is poor. In addition, when the external force on the vehicle chassis is large, the connection between the suspension spring and the chassis is relatively easy to break or loosen, and the stability of the suspension spring is poor. Summary of the Utility Model

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. For this reason, an object of the utility model is to provide a chassis, the leaf spring connecting structure of which is simpler and more reliable, which can effectively improve the damping effect of the vehicle and enhance the comfort of the vehicle.

[0005] The utility model further provides a vehicle.

[0006] According to the chassis of the utility model, it includes: longitudinal beams, the longitudinal beams extend in the front-back direction and there are two of them, the two longitudinal beams are spaced apart in the left-right direction, and front supports and rear supports are arranged on the longitudinal beams at intervals in the front-back direction; a rear axle assembly, the rear axle assembly includes a rear axle part and a leaf spring part, the rear axle part extends in the left-right direction, the left and right ends of the rear axle part are adapted to be connected to the left and right rear wheels of the vehicle, the leaf spring part extends in the front-back direction and there are two of them, the two leaf spring parts are respectively located on the outer sides of the two longitudinal beams far away from each other in the left-right direction, the front end of the leaf spring part is fixedly connected to the front support, and a spring eye is arranged at the rear end of the leaf spring part, and the spring eye is wound around the rear support and can rotate relative to the rear support.

[0007] Thus, by fixedly connecting the front end of the leaf spring part to the front support, and winding the spring eye at the rear end of the leaf spring part around the rear support and making it rotatable relative to the rear support, such a setting can not only ensure the stability of the overall installation of the leaf spring part, but also when the leaf spring part undergoes elastic deformation, the rear end of the leaf spring part can rotate correspondingly relative to the rear support, so as to play a better damping and buffering role on the rear axle part, make the force transmission between the longitudinal beam and the leaf spring part more balanced, and further improve the load capacity and damping performance of the chassis structure.

[0008] In some examples of the present utility model, the rear support includes a first sub - support and a second sub - support. The upper end of the first sub - support is connected to the longitudinal beam. The lower end of the first sub - support extends forward and downward and is connected to the lower end of the second sub - support. The second sub - support is bent relative to the first sub - support. The upper end of the second sub - support extends forward and upward and is rotatably connected to the rear end of the leaf spring member.

[0009] In some examples of the present utility model, a buffer bushing extending in the left - right direction is provided at the upper end of the second sub - support, and the ear is rotatably wound around the buffer bushing.

[0010] In some examples of the present utility model, an included angle α is formed between the first sub - support and the second sub - support, and α satisfies the relation: 0° < α < 90°.

[0011] In some examples of the present utility model, the chassis further includes a battery rear cross - beam. The battery rear cross - beam extends in the left - right direction and is connected to the two longitudinal beams. The battery rear cross - beam is disposed adjacent to the rear sides of the two longitudinal beams. The battery rear cross - beam is adapted to be connected to a battery, and the rear supports are disposed at both ends of the battery rear cross - beam in the left - right direction.

[0012] In some examples of the present utility model, a first through - hole is provided on the front support, and a second through - hole is provided at the front end of the leaf spring member. At least a part of one side of the front support adjacent to the longitudinal beam in the left - right direction protrudes away from the longitudinal beam in the left - right direction, so as to form an avoidance space with the longitudinal beam. The fastener passes through the first through - hole and the second through - hole and the end thereof extends into the avoidance space. The end of the fastener located in the avoidance space is fixedly connected to the front support.

[0013] In some examples of the present utility model, the fastener is a bolt, and a nut is provided on the part of the front support corresponding to the avoidance space. The nut is connected to the rod portion of the bolt.

[0014] In some examples of the present utility model, the front support includes an upper mounting bracket and a lower mounting bracket. The first through - hole is provided on the lower mounting bracket. The lower mounting bracket is connected to the side wall of the longitudinal beam in the left - right direction. The upper mounting bracket is disposed above the lower mounting bracket and is at least partially connected to the upper side of the longitudinal beam. The upper mounting bracket is fixedly connected to the lower mounting bracket.

[0015] In some examples of the present utility model, a transition protrusion is provided at the edge of the upper mounting bracket adjacent to the lower mounting bracket. The transition protrusion covers the lower mounting bracket and is connected to the lower mounting bracket.

[0016] A vehicle according to an embodiment of the present invention includes the chassis described above.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 is a schematic diagram of a chassis according to an embodiment of the present invention;

[0020] Figure 2 is a schematic diagram of a chassis according to an embodiment of the present invention;

[0021] Figure 3 is a schematic diagram of a chassis according to an embodiment of the present invention;

[0022] Figure 4 is a partial schematic diagram of a chassis according to an embodiment of the present invention;

[0023] Figure 5 is a partial cross-sectional view of a chassis according to an embodiment of the present invention;

[0024] Figure 6 is a partial cross-sectional view of a chassis according to an embodiment of the present invention;

[0025] Figure 7 is a partial schematic diagram of a chassis according to an embodiment of the present invention.

[0026] Reference numerals:

[0027] 100, chassis;

[0028] 10, longitudinal beam; 101, front support; 102, rear support; 103, avoidance space;

[0029] 1011, nut; 1013, upper mounting bracket; 1014, lower mounting bracket; 1015, transition protrusion; 1021, first sub-support; 1022, second sub-support; 10221, buffer bushing;

[0030] 30, rear axle assembly; 301, rear axle part; 302, leaf spring part; 3021, spring eye;

[0031] 40, fastener; 401, head; 402, rod part;

[0032] 50, battery rear cross beam;

[0033] 60. Shock absorber; 601. First end; 602. Second end; 603. First mounting bracket of the shock absorber; 604. Second mounting bracket of the shock absorber; 605. Mounting sleeve

[0034] 6031. First sub-bracket part; 6032. Second sub-bracket part; 6041. Third sub-bracket part; 6042. Fourth sub-bracket part; 6043. Fifth sub-bracket part Detailed implementation manner

[0035] The embodiments of the present invention will be described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention will be described in detail below

[0036] Reference will be made below Figures 1-7 to describe the chassis 100 according to an embodiment of the present invention. The chassis 100 can be applied to a vehicle

[0037] Combined with Figures 1-7 as shown, the chassis 100 according to the present invention mainly includes: longitudinal beams 10 and rear axle assembly 30. Among them, the longitudinal beams 10 extend in the front-rear direction and there are two of them. The two longitudinal beams 10 are spaced apart in the left-right direction. Front supports 101 and rear supports 102 are arranged at intervals in the front-rear direction on the longitudinal beams 10. The longitudinal beams 10 can not only provide reliable support and mounting points for other components, but also be used to buffer road surface excitation and collision energy, can play a certain protective role for the components installed on or around the longitudinal beams 10, and can ensure the stability and reliability of the vehicle chassis 100

[0038] Further, the rear axle assembly 30 includes a rear axle part 301 and a leaf spring part 302. Among them, the rear axle part 301 extends in the left-right direction, and the left and right ends of the rear axle part 301 are adapted to be connected to the left and right rear wheels of the vehicle. In this way, it can not only provide reliable support and mounting points for the left and right rear wheels of the vehicle, but also transmit the power from the engine or motor to the left and right rear wheels through the rear axle part 301, and can ensure the normal driving function of the vehicle

[0039] Further, the leaf spring parts 302 extend in the front-rear direction and there are two of them. The two leaf spring parts 302 are respectively located on the outer sides of the two longitudinal beams 10 that are far away from each other in the left-right direction. In this way, it can not only provide enough space for the deformation of the leaf spring parts 302, can avoid the contact between the leaf spring parts 302 and other components due to elastic deformation under force, resulting in component wear or damage, but also facilitate the subsequent inspection and maintenance of the leaf spring parts 302, can improve the maintenance efficiency of the leaf spring parts 302, reduce the maintenance cost of the leaf spring parts 302. In addition, it can also avoid occupying the space between the two longitudinal beams 10, can provide more layout space for other components of the vehicle, and can make the overall layout of the vehicle more compact and reasonable

[0040] Furthermore, the front end of the leaf spring member 302 is fixedly connected to the front support 101. A spring eye 3021 is provided at the rear end of the leaf spring member 302. The spring eye 3021 is wound around the rear support 102 and is rotatable relative to the rear support 102. In this way, the front end of the leaf spring member 302 can be fixed within the front support 101, and the rear end of the leaf spring member 302 can be rotatably connected to the longitudinal beam 10. Thus, not only can the normal working performance of the leaf spring member 302 be ensured to guarantee the vibration damping effect of the vehicle, but also a certain supporting effect can be provided by the leaf spring member 302. The leaf spring member 302, the longitudinal beam 10, and the rear axle member 301 jointly maintain the structural strength and stability at the rear of the vehicle.

[0041] Furthermore, when a force acts on the leaf spring member 302, the leaf spring member 302 will undergo elastic deformation to absorb external energy. When the acting force disappears, the steel plate will return to its original shape. When the vehicle is traveling on an uneven road surface, the bumps on the road surface will cause the wheels to bounce up and down. The leaf spring member 302 can absorb and buffer a part of the impact and vibration from the road surface through its own deformation, enabling the wheels to fit the road surface as much as possible, reducing the vibration transmitted to the vehicle body, and improving the riding comfort of the vehicle and the safety of the goods in the vehicle. While the leaf spring member 302 is deforming, the rear end of the leaf spring member 302 can rotate accordingly. In this way, not only can the leaf spring member 302 buffer and damp the force through deformation, but also buffer and damp through rotation. Additionally, this can ensure the stability of the connection between the rear end of the leaf spring member 302 and the front support 101, thereby improving the stability of the connection between the leaf spring member 302 and the longitudinal beam 10 and preventing the connection between the leaf spring member 302 and the front support 101 and the rear support 102 from breaking.

[0042] Combined with Figure 1 、 Figure 2 、 Figure 3 and Figure 6As shown in the figure, the rear support 102 includes a first sub - support 1021 and a second sub - support 1022. The upper end of the first sub - support 1021 is connected to the longitudinal beam 10. The lower end of the first sub - support 1021 extends forward and downward and is connected to the lower end of the second sub - support 1022. The second sub - support 1022 is bent relative to the first sub - support 1021. The upper end of the second sub - support 1022 extends forward and upward and is rotatably connected to the rear end of the leaf spring member 302. With such a setting, through the arrangement of the first sub - support 1021 and the second sub - support 1022, the flexibility of the connection between the rear end of the leaf spring member 302 and the rear support 102 can be improved. Thus, not only can the rear support 102 flexibly cooperate with the movement of the leaf spring member 302 to ensure the good working performance of the leaf spring member 302 and improve the vibration damping effect of the chassis 100 structure, but also the stress at the rear support 102 can be dispersed through the rotation of the first sub - support 1021 and the second sub - support 1022, which can improve the stability and reliability of the chassis 100 structure. In addition, it is also convenient for the installation and disassembly of the rear end of the leaf spring member 302 and for the subsequent inspection and maintenance of the leaf spring member 302.

[0043] In some embodiments of the present utility model, when the leaf spring member 302 is elastically deformed under an external force, it can push the rear support 102 to rotate around the rear support 102.

[0044] In some embodiments of the present utility model, the first sub - support 1021 can be an open structure in the shape of a "U". The connection structure between the first sub - support 1021 and the second sub - support 1022 can be a structure combined with a circular sleeve and a bushing. The first sub - support 1021 is welded to the circumference of the circular sleeve. The connection between the leaf spring member 302 and the first sub - support 1021 can also be achieved through a structure combined with a bushing and a circular sleeve. The connection between the second sub - support 1022 and the circumference of the circular sleeve can also adopt a welded fixed connection method. Further, the bushing is press - fitted into the circular sleeve, and through the torsional deformation of the bushing, the rotational movement of the leaf spring member 302 and the rear support 102 is realized, reducing the impact and vibration during driving.

[0045] In some embodiments of the present utility model, the structure combined with a circular sleeve and a bushing can also be adopted between the front support 101 and the front end of the leaf spring member 302.

[0046] Combined Figure 6As shown, a buffer bushing 10221 extending in the left - right direction is provided at the upper end of the second sub - support 1022, and the ear 3021 is rotatably wound around the buffer bushing 10221. Specifically, by providing the buffer bushing 10221 at the upper end of the second sub - support 1022 and rotatably winding the ear 3021 around the buffer bushing 10221, on the one hand, the wear of the rear end of the leaf spring member 302 rotatably connected to the rear support 102 can be reduced, and the stability of the connection between the leaf spring member 302 and the rear support 102 can be improved. On the other hand, when a force acts on the buffer bushing 10221, the buffer bushing 10221 can also play a certain role in buffering and vibration reduction, which can further improve the vibration reduction performance of the leaf spring member 302.

[0047] Combined with Figure 1 、 Figure 3 and Figure 6 As shown, an included angle α is formed between the first sub - support 1021 and the second sub - support 1022, and α satisfies the relationship: 0° < α < 90°. Specifically, by setting the included angle between the first sub - support 1021 and the second sub - support 1022 within a reasonable range, it can be prevented that the included angle α is too large and the second sub - support 1022 extends approximately in the front - rear direction, resulting in jamming or even inability to rotate normally when the ear 3021 at the rear end of the leaf spring member 302 is wound around the second sub - support 10221. In this way, the stability and smoothness of the rotation of the leaf spring member 302 relative to the rear support can be improved.

[0048] Combined with Figure 1 As shown, the chassis 100 further includes a battery rear cross - beam 50. The battery rear cross - beam 50 extends in the left - right direction and is connected to the two longitudinal beams 10. The battery rear cross - beam 50 is disposed adjacent to the rear sides of the two longitudinal beams 10. The battery rear cross - beam 50 is adapted to be connected to the battery, and the rear support 102 is disposed at both ends of the battery rear cross - beam 50 in the left - right direction. Specifically, by providing the battery rear cross - beam 50 at the rear sides of the two longitudinal beams 10, connecting both ends of the battery rear cross - beam 50 to the two longitudinal beams 10 respectively, and making the battery rear cross - beam 50 adapted to be connected to the battery, not only can the structural design of the chassis 100 be optimized, the rationality and stability of the chassis 100 structure be ensured, but also an installation position and a protection function can be provided for the battery, and the stability and safety of the battery during vehicle driving can be ensured.

[0049] Furthermore, by respectively arranging the rear supports 102 at the left and right ends of the battery rear crossbeam 50, and rotatably connecting the rear ends of the two leaf spring members 302 to the left and right ends of the battery rear crossbeam 50 respectively, not only can the connection between the rear ends of the two leaf spring members 302 and the longitudinal beam 10 be realized through the battery rear crossbeam 50, making the force and layout of the chassis 100 structure more balanced and reasonable, but also it helps to ensure the good working performance of the leaf spring members 302.

[0050] Furthermore, a first through-hole is provided on the front support 101, and a second through-hole is provided at the front end of the leaf spring member 302, which can ensure the rationality of the structural arrangement and simplify the subsequent fixing process of the front end of the leaf spring member 302.

[0051] Furthermore, the fastener 40 includes a head 401 and a rod portion 402. The rod portion 402 passes through the first through-hole and the second through-hole. The head 401 is arranged at the first end of the rod portion 402 and is located on the side of the front support 101 away from the longitudinal beam 10 in the left-right direction. At least part of the side of the front support 101 adjacent to the longitudinal beam 10 in the left-right direction protrudes towards the side away from the longitudinal beam 10 in the left-right direction, so as to form a clearance space 103 with the longitudinal beam 10. The second end of the rod portion 402 extends into the clearance space 103 and is fixedly connected to the front support 101. Specifically, by passing the rod portion 402 of the fastener 40 through the first through-hole and the second through-hole in sequence, the front end of the leaf spring member 302 is fixed on the front support 101, and the head 401 of the fastener 40 is arranged at the first end of the rod portion 402 and is located on the side of the front support 101 away from the longitudinal beam 10 in the left-right direction. This not only makes the connection between the front end of the leaf spring member 302 and the front support 101 simple, direct, stable and reliable, can prevent the fastener 40 from loosening or falling off, but also is convenient for the installation and disassembly of the front end of the leaf spring member 302, and is convenient for the subsequent inspection and maintenance of the leaf spring member 302.

[0052] In addition, at least part of the side of the front support 101 adjacent to the longitudinal beam 10 in the left-right direction protrudes towards the side away from the longitudinal beam 10 in the left-right direction, so as to form a clearance space 103 with the longitudinal beam 10. The second end of the rod portion 402 extends into the clearance space 103 and is fixedly connected to the front support 101. This can improve the structural strength of the connection between the leaf spring member 302 and the front support 101, effectively avoid the situation that the connection between the leaf spring member 302 and the front support 101 is deformed or fractured due to stress concentration, and can improve the stability and reliability of the connection between the leaf spring member 302 and the front support 101.

[0053] In some embodiments of the present utility model, components such as a drive shaft, a main reducer and a differential can be arranged in the rear axle member 301 to ensure the normal driving of the vehicle.

[0054] In some embodiments of the present utility model, the avoidance space 103 presents an open structure in the shape of a "U".

[0055] In some embodiments of the present utility model, the connection between the rear axle member 301 and the leaf spring member 302 can be achieved through the cooperation of a "U-shaped" bolt and the supporting tile member.

[0056] In some embodiments of the present utility model, the rear axle member 301 is located below the two longitudinal beams 10 and is spaced from the two longitudinal beams 10. Buffer limit blocks are respectively arranged on the parts of the two longitudinal beams 10 corresponding to the rear axle member 301, and the buffer limit blocks are selectively in extrusion limit fit with the rear axle member 301.

[0057] In some embodiments of the present utility model, the distance between the front support 101 and the rear support 102 in the front-rear direction can be adjusted according to the length of the leaf spring member 302, so that the structure of the chassis 100 is suitable for the installation of the leaf spring member 302 and is suitable for the vehicle requirements of different vehicle models or the same vehicle model under different load conditions.

[0058] Combined Figure 1 and Figure 5 As shown, the fastener is a bolt. A nut 1011 is arranged on the part of the front support 101 corresponding to the avoidance space 103, and the nut 1011 is connected to the rod part of the bolt. Specifically, by arranging the nut 1011 on the part of the front support 101 corresponding to the avoidance space 103 and connecting the nut 1011 to the second end of the rod part 402, the fastener 40 can be prevented from shifting, the fixing effect of the fastener 40 on the front support 101 and the leaf spring member 302 can be improved, the stability and reliability of the connection between the front support 101 and the leaf spring member 302 can be improved. In addition, the convenience of installation and disassembly of the leaf spring member 302 can be ensured.

[0059] Combined Figure 1 、 Figure 3 and Figure 4 As shown, the front support 101 includes an upper mounting bracket 1013 and a lower mounting bracket 1014. The first through hole is arranged on the lower mounting bracket 1014. The lower mounting bracket 1014 is connected to the side wall of the longitudinal beam 10 in the left-right direction. The upper mounting bracket 1013 is arranged above the lower mounting bracket 1014 and is at least partially connected to the upper side of the longitudinal beam 10. The upper mounting bracket 1013 and the lower mounting bracket 1014 are fixedly connected.

[0060] With such a setting, the upper mounting bracket 1013 and the lower mounting bracket 1014 are connected and fixed together to form the front support 101, and the first through hole is arranged on the lower mounting bracket 1014. Further, the lower mounting bracket 1014 is connected to the side wall of the longitudinal beam 10 in the left-right direction, and the upper mounting bracket 1013 is arranged above the lower mounting bracket 1014 and is at least partially connected to the upper side of the longitudinal beam 10. In this way, not only can the installation function of the front support 101 be realized in a very small layout space, but also the stability and reliability of the connection between the front support 101 and the longitudinal beam 10 can be ensured. The front support 101 can effectively disperse and bear the loads from all directions, the front support 101 can be prevented from deforming or being damaged, and the front support 101 can maintain good stability under the action of external forces.

[0061] In some embodiments of the present invention, the upper mounting bracket 1013 and the lower mounting bracket 1014 can be connected by welding. In this way, not only can the stability and reliability of the connection between the upper mounting bracket 1013 and the lower mounting bracket 1014 be ensured, but also no additional connecting parts are required, and the structure of the front support 101 can be prevented from being complicated. In addition, the front support 101 and the longitudinal beam 10 can also be connected by welding, which can ensure the firm and reliable connection between the front support 101 and the longitudinal beam 10 while ensuring the simple structure of the chassis 100.

[0062] In some embodiments of the present invention, the front support 101 is a box-type cavity buckling structure.

[0063] In some embodiments of the present invention, the structures of the upper mounting bracket 1013 and the lower mounting bracket 1014 can be appropriately adjusted and optimized according to actual needs.

[0064] Combined Figure 1 、 Figure 3 and Figure 4 As shown, a transition protrusion 1015 is arranged at the edge of the upper mounting bracket 1013 adjacent to the lower mounting bracket 1014, and the transition protrusion 1015 covers the lower mounting bracket 1014 and is connected to the lower mounting bracket 1014. Specifically, by arranging the transition protrusion 1015 at the edge of the upper mounting bracket 1013 adjacent to the lower mounting bracket 1014, the transition protrusion 1015 covers the lower mounting bracket 1014 and is connected to the lower mounting bracket 1014. In this way, not only can the connection strength between the upper mounting bracket 1013 and the lower mounting bracket 1014 be improved, and the coherence of the structure of the front support 101 be ensured, but also the continuity and stability of the connection between the front support 101 and the longitudinal beam 10 can be improved. The transmission of the acting force between the upper mounting bracket 1013, the lower mounting bracket 1014, and the longitudinal beam 10 can be made more balanced, the fatigue performance of the lap joint between the upper mounting bracket 1013 and the lower mounting bracket 1014 can be improved, and the load capacity and reliability of the front support 101 can be improved.

[0065] In some embodiments of the present utility model, the battery can be placed between the rear axle member 301 and the battery rear crossbeam 50.

[0066] Combined with Figure 1 , Figure 2 and Figure 3 As shown in , the chassis 100 further includes shock absorbers 60. The first end 601 of the shock absorber 60 is connected to the rear axle member 301, the second end 602 of the shock absorber 60 is rotatably connected to the mounting sleeve 605, the mounting sleeve 605 is connected to the longitudinal beam 10, and there are two shock absorbers 60. The two shock absorbers 60 are arranged in one-to-one correspondence with the two longitudinal beams 10. Specifically, the first end 601 of the shock absorber 60 is connected to the rear axle member 301, the second end 602 of the shock absorber 60 is connected to the mounting sleeve 605, and the mounting sleeve 605 is connected to the longitudinal beam 10. In this way, not only can the shock absorber 60 be stably and reliably fixed between the rear axle member 301 and the longitudinal beam 10, ensuring the rationality and reliability of the chassis 100 structure, but also a certain supporting effect can be provided for the longitudinal beam 10, preventing the longitudinal beam 10 from deforming or twisting, and improving the stability of the chassis 100 structure.

[0067] Furthermore, there are two shock absorbers 60, and the two shock absorbers 60 are arranged in one-to-one correspondence with the two longitudinal beams 10, which can ensure the normal working performance of the shock absorbers 60, thereby absorbing or attenuating the vibration energy transmitted to the shock absorber 60 structure, effectively reducing the vibration energy transmitted from the chassis 100 structure to the vehicle body, and improving the stability and comfort of the vehicle.

[0068] Furthermore, the shock absorber 60 is connected to the rear axle member 301, and the rear axle member 301 is connected to the leaf spring member 302, so that there is also a connection relationship between the shock absorber 60 and the leaf spring member 302. By rotatably connecting the second end 602 of the shock absorber 60 to the mounting sleeve 605, the shock absorber 60 can well adapt to the movement of the rear axle member 301 and the deformation of the leaf spring member 302, and the vehicle body can maintain a relatively stable posture during driving.

[0069] Combined with Figure 1 , Figure 2 and Figure 3 As shown in , both of the two shock absorbers 60 are located between the two leaf spring members 302 and are respectively spaced from the two leaf spring members 302 in the left-right direction. Specifically, by making both of the two shock absorbers 60 located between the two leaf spring members 302 and respectively spaced from the two leaf spring members 302 in the left-right direction, not only can the leaf spring members 302 and the shock absorbers 60 not interfere with each other when playing their roles, but also it is convenient for subsequent replacement and maintenance of the leaf spring members 302 and the shock absorbers 60.

[0070] Furthermore, although the leaf spring member 302 can buffer a part of the road surface impact, certain after-vibrations may occur during the rebound process. The shock absorber 60 can promptly suppress such after-vibrations, enabling the vehicle to more quickly return to a stable state after passing through a bumpy road surface. Thus, the leaf spring member 302 and the shock absorber 60 are spaced apart and cooperate with each other, and can jointly act to improve the ride comfort of the vehicle.

[0071] In some embodiments of the present utility model, when the vehicle is not started or the shock absorber 60 is not working, at this time, the shock absorber 60 is inclined at a certain angle relative to the horizontal plane of the vehicle body.

[0072] Combined with Figure 1 、 Figure 2 and Figure 7 As shown, the chassis 100 further includes a first shock absorber mounting bracket 603 and a second shock absorber mounting bracket 604. The first shock absorber mounting bracket 603 is L-shaped and includes a first sub-bracket portion 6031 and a second sub-bracket portion 6032. The first sub-bracket portion 6031 extends in the up-down direction and is connected to the mounting sleeve 605. The second sub-bracket portion 6032 is disposed at the lower end of the first sub-bracket portion 6031 and extends in the left-right direction. The first sub-bracket portion 6031 is connected to the longitudinal beam 10. With such a setting, the connection between the mounting sleeve 605 and the longitudinal beam 10 can be achieved through the first shock absorber mounting bracket 603, and the L-shaped structural design can improve the structural strength and load-bearing capacity of the first shock absorber mounting bracket 603, and can improve the stability and reliability of the connection between the mounting sleeve 605 and the longitudinal beam 10.

[0073] The second shock absorber mounting bracket 604 is U-shaped and includes a third sub-bracket portion 6041, a fourth sub-bracket portion 6042, and a fifth sub-bracket portion 6043. The third sub-bracket portion 6041 extends in the front-rear direction. The fourth sub-bracket portion 6042 and the fifth sub-bracket portion 6043 are respectively disposed on the front and rear sides of the third sub-bracket portion 6041 and both extend in the left-right direction. The lower ends of the third sub-bracket portion 6041, the fourth sub-bracket portion 6042, and the fifth sub-bracket portion 6043 are all connected to the longitudinal beam 10. The first shock absorber mounting bracket 603 is located between the fourth sub-bracket portion 6042 and the fifth sub-bracket portion 6043 and is spaced apart from the third sub-bracket portion 6041 in the left-right direction. The mounting sleeve 605 is connected to the third sub-bracket portion 6041, and the first shock absorber mounting bracket 603 is respectively connected to the fourth sub-bracket portion 6042 and the fifth sub-bracket portion 6043. With such a setting, the connection between the mounting sleeve 605 and the longitudinal beam 10 can also be achieved through the second shock absorber mounting bracket 604, and the U-shaped structural design can improve the structural strength and load-bearing capacity of the second shock absorber mounting bracket 604, and can improve the stability and reliability of the connection between the mounting sleeve 605 and the longitudinal beam 10.

[0074] Furthermore, by simultaneously providing a first mounting bracket and a second shock absorber mounting bracket 604 between the mounting sleeve 605 and the longitudinal beam 10, the connection between the mounting sleeve 605 and the longitudinal beam 10 can be made more stable and reliable, effectively preventing the connection between the mounting sleeve 605 and the longitudinal beam 10 from failing, resulting in the shock absorber 60 falling off or shifting. Thus, the stability and reliability of the shock absorber 60 can be effectively ensured, and the good working performance of the shock absorber 60 can be guaranteed.

[0075] In some embodiments of the present invention, the connection between the first shock absorber mounting bracket 603 and the longitudinal beam 10, and the connection between the second shock absorber mounting bracket 604 and the longitudinal beam 10 can both adopt a welding connection method. This can not only ensure the stability and reliability of the connection between the first shock absorber mounting bracket 603 and the longitudinal beam 10, and the connection between the second shock absorber mounting bracket 604 and the longitudinal beam 10, but also does not require any additional connecting parts, avoiding complicating the structure of the base.

[0076] In some embodiments of the present invention, the shock absorber 60 and the mounting sleeve 605 can both be provided with internal threaded holes, and the connection between the shock absorber 60 and the mounting sleeve 605 is achieved by bolts passing through the internal threaded holes.

[0077] In some embodiments of the present invention, the U-shaped part and the L-shaped part can be realized through manufacturing processes such as bending and machining, without incurring a large amount of stamping die costs, which can reduce the product development cost.

[0078] The vehicle according to the present invention may mainly include: the above-mentioned chassis 100. Specifically, since the structure of the chassis 100 is simpler, more direct, stable and reliable, and has good shock absorption performance, applying the chassis 100 to a vehicle can not only improve the smoothness and comfort of the vehicle, but also enhance the stability and reliability of the vehicle.

[0079] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0080] In the description of this specification, the descriptions with reference to the terms "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example.

[0081] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model, and the scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A chassis, characterized in that: include: A longitudinal beam, wherein the longitudinal beam is extended in the front-rear direction and is in two pieces, the two longitudinal beams are spaced apart from each other in the left-right direction, and the longitudinal beam is provided with a front support and a rear support spaced apart from each other in the front-rear direction; A rear axle assembly, the rear axle assembly includes a rear axle member and a leaf spring member, the rear axle member is extended in the left and right directions, the left and right ends of the rear axle member are suitable for being connected to the left and right rear wheels of the vehicle, the leaf spring member is extended in the front and rear directions and is two in number, the two leaf spring members are respectively located on the outsides of the two longitudinal beams that are away from each other in the left and right directions, the front end of the leaf spring member is connected and fixed to the front support, the rear end of the leaf spring member is provided with a coil ear, the coil ear is coiled on the rear support and can rotate relative to the rear support.

2. The chassis according to claim 1, characterized in that: The rear support includes a first sub-support and a second sub-support, the upper end of the first sub-support is connected to the longitudinal beam, the lower end of the first sub-support is extended toward the front and lower side and is connected to the lower end of the second sub-support, the second sub-support is bent relative to the first sub-support, the upper end of the second sub-support is extended toward the front and upper side and is rotatably connected to the rear end of the leaf spring member.

3. The chassis according to claim 2, characterized in that: A buffer bushing extending in the left-right direction is arranged at the upper end of the second sub-support, and the coiled ear is rotatably coiled on the buffer bushing.

4. The chassis according to claim 2, characterized in that: An angle α is formed between the first sub-support and the second sub-support, and α satisfies the relationship: 0°<α<90°.

5. The chassis according to claim 1, characterized in that: It also includes a battery rear cross beam, which extends in the left-right direction and is connected to the two longitudinal beams. The battery rear cross beam is arranged adjacent to the rear sides of the two longitudinal beams. The battery rear cross beam is suitable for being connected to the battery. The rear support is arranged at both ends of the battery rear cross beam in the left-right direction.

6. The chassis according to claim 1, characterized in that: The front support is provided with a first through hole, and the front end of the leaf spring is provided with a second through hole. The side of the front support adjacent to the longitudinal beam in the left-right direction is at least partially protruded in the left-right direction toward the side away from the longitudinal beam to form an escape space between the longitudinal beam, and the fastener passes through the first through hole and the second through hole and the end portion extends into the escape space. The fastener is located at the end portion of the escape space and is connected and fixed to the front support.

7. The chassis according to claim 6, characterized in that The fastener is a bolt, and a nut is provided on the front support corresponding to the portion in the avoidance space, and the nut is connected to the rod portion of the bolt.

8. The chassis according to claim 6, characterized in that: The front support includes an upper mounting bracket and a lower mounting bracket, the first through-hole is arranged on the lower mounting bracket, the lower mounting bracket is connected to the side walls of the longitudinal beam in the left and right directions, the upper mounting bracket is arranged above the lower mounting bracket and is at least partially connected to the upper side of the longitudinal beam, and the upper mounting bracket is connected and fixed to the lower mounting bracket.

9. The chassis according to claim 8, characterized in that The upper mounting bracket is provided with a transition protrusion on an edge adjacent to the lower mounting bracket, and the transition protrusion covers the lower mounting bracket and is connected to the lower mounting bracket.

10. A vehicle, characterized in that: A chassis comprising the chassis described in any one of claims 1-9.

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