Suspension system and vehicle

Abstract

The utility model relates to a suspension system and a vehicle, the suspension system comprises two composite material plate springs and a connecting piece, the two composite material plate springs are mutually spaced in a first direction, and the composite material plate springs are configured to be connected with a vehicle body of the vehicle; the connecting piece is arranged between the two composite material plate springs and connected with the two composite material plate springs, and the two ends of the connecting piece are configured to be connected with wheels correspondingly; the suspension system provided by the embodiment of the utility model can show different rigidity characteristics under different load requirements of the vehicle, so that the damping capacity of the vehicle is improved, and the comfort level of a driver and passengers is improved.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a suspension system and a vehicle. Background Art

[0002] In the related art, vehicles use leaf springs as suspension components of the vehicle. The leaf springs provide an elastic connection between the vehicle's axles and frame, thereby reducing the bumpy discomfort caused by uneven roads during vehicle operation and ensuring the normal driving of the vehicle. However, the stiffness of the leaf springs is fixed and cannot meet the shock absorption requirements of vehicles with different loads, affecting the comfort of the driver and passengers. Utility Model Content

[0003] The embodiments of the present application provide a suspension system and a vehicle, which improve the shock absorption capability of the vehicle to enhance the comfort of passengers and at least partially solve the above-mentioned technical problems.

[0004] In order to achieve the above objectives, according to a first aspect of the present application, a suspension system is provided, comprising:

[0005] two composite leaf springs, the two composite leaf springs being spaced apart from each other in a first direction, the composite leaf springs being configured to be connected to a body of a vehicle; and

[0006] The connecting member is arranged between the two composite leaf springs and connected to the two composite leaf springs, and both ends of the connecting member are respectively configured to be connected to the wheels.

[0007] In some embodiments, at least a portion of the connecting member is bent in the extending direction of the connecting member.

[0008] In some embodiments, the connector includes:

[0009] A connector body connected to the two composite leaf springs; and

[0010] The two first mounting portions are connected to the connector body. The first mounting portion is located on one side of the composite leaf spring in the first direction. The first mounting portion is configured to be connected to a wheel of a vehicle.

[0011] In some embodiments, the connector body comprises:

[0012] two first sub-segments, respectively connected to the two composite leaf springs;

[0013] a second sub-segment disposed between the two first sub-segments; an extension axis of the second sub-segment and an extension axis of the first sub-segment not being on the same straight line; and

[0014] There are two curved segments, at least part of which is curved, and the second sub-segment is connected to the two first sub-segments via the two curved segments.

[0015] In some embodiments, the connector body has a cavity extending along an extension direction of the connector body.

[0016] In some embodiments, the composite leaf spring is a single-piece leaf spring structure.

[0017] In some embodiments, the suspension system includes:

[0018] a connecting portion, the connecting portion being fixedly connected to the connecting piece, a mounting space being defined between the connecting portion and the connecting piece, and at least a portion of the composite leaf spring being located within the mounting space;

[0019] The pressure-bearing portion is at least partially located in the installation space, and the pressure-bearing portion is arranged on the composite leaf spring and contacts the connecting portion.

[0020] In some embodiments, the pressure-bearing portion is a die-casting part.

[0021] In some embodiments, a mounting structure is further included, the mounting structure being configured to mount the composite leaf spring to a body of a vehicle.

[0022] In some embodiments, the mounting structure includes:

[0023] at least one second mounting portion mounted on one end of the composite leaf spring; and

[0024] at least one mounting bracket configured to be coupled to a body of a vehicle;

[0025] Wherein, the second mounting portion is rotatably connected to the mounting bracket.

[0026] In some embodiments, the mounting structure further includes a third mounting portion, one end of the third mounting portion is rotatably connected to the second mounting portion, and the other end of the third mounting portion is rotatably connected to the mounting bracket.

[0027] In some embodiments, the composite leaf spring is a variable rate leaf spring.

[0028] In some embodiments, the composite leaf spring is made of carbon fiber reinforced plastic and glass fiber reinforced plastic.

[0029] According to a second aspect of the present application, a vehicle is provided, comprising a suspension system.

[0030] In the technical solution of the present application, the suspension system includes two composite leaf springs and a connecting member, the two composite leaf springs are spaced apart from each other in a first direction, and the composite leaf springs are configured to be connected to the body of the vehicle; the connecting member is arranged between the two composite leaf springs and connected to the two composite leaf springs, and the two ends of the connecting member are respectively configured to be connected to the wheels; that is, in the embodiment of the present application, by providing interconnected connecting members and composite leaf springs, the force exerted on the wheel during driving is transmitted to the composite leaf spring via the connecting member, and then transmitted to the body of the vehicle. Since the composite leaf spring will undergo corresponding deformation under different loads, the composite leaf spring will exhibit different stiffness characteristics, thereby improving the shock absorption ability of the vehicle and thereby improving the comfort of the driver and passengers.

[0031] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] To more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present application. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0033] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings, wherein the same drawing numbers represent the same parts in the following description.

[0034] Figure 1 is a schematic diagram of the overall structure of a suspension system provided in an exemplary embodiment of the present application;

[0035] Figure 2 is a schematic diagram of the assembly of a suspension system and a vehicle body provided in an exemplary embodiment of the present application;

[0036] Figure 3 is a schematic structural diagram of a suspension system provided in an exemplary embodiment of the present application;

[0037] Figure 4 is an exploded schematic diagram of the assembly of a composite leaf spring and a connecting member provided in an exemplary embodiment of the present application;

[0038] Figure 5 It is an exploded schematic diagram of the cooperation between the composite leaf spring, the connecting member and the pressure-bearing portion provided in an exemplary embodiment of the present application.

[0039] Figure 6 is a schematic diagram of the overall structure of a composite leaf spring provided in an exemplary embodiment of the present application;

[0040] Figure 7 is a schematic diagram of the overall structure of a composite leaf spring provided in an exemplary embodiment of the present application;

[0041] Figure 8 1 is a schematic diagram of assembling a composite leaf spring and a vehicle body provided in an exemplary embodiment of the present application;

[0042] Figure 9 1 is a schematic diagram of assembling a composite leaf spring and a vehicle body provided in an exemplary embodiment of the present application;

[0043] Figure 10 is a schematic structural diagram of a mounting bracket provided in an exemplary embodiment of the present application;

[0044] Figure 11 is a schematic diagram of the assembly of the mounting bracket and the vehicle body provided in an exemplary embodiment of the present application;

[0045] Figure 12 is a schematic diagram of the assembly of the mounting bracket and the vehicle body provided in an exemplary embodiment of the present application;

[0046] Figure 13 is a schematic diagram of the assembly of a composite leaf spring and a mounting bracket provided in an exemplary embodiment of the present application;

[0047] Figure 14 for Figure 2 A magnified schematic diagram of point A in the middle;

[0048] Figure 15 It is a schematic diagram of the assembly of the suspension system provided in an exemplary embodiment of the present application and the vehicle body.

[0049] Description of reference numerals:

[0050] 1. Composite leaf spring; 11. Composite leaf spring body; 12. Protective portion; 2. Connector; 21. Connector body; 211. First sub-segment; 212. Second sub-segment; 213. Bending section; 22. First mounting portion; 3. Cavity; 31. Connecting portion; 32. Fitting portion; 33. Pressure-bearing portion; 4. First groove; 5. First convex portion; 6. Second groove; 7. Second convex portion; 8. Mounting structure; 81. Second mounting portion; 82. Mounting bracket; 83. Third mounting portion; 9. Shock-absorbing structure; 10. Abutment; 13. Mounting space. DETAILED DESCRIPTION

[0051] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0052] This application proposes a suspension system. Figures 1 to 15 Some embodiments of the present application are shown in the accompanying drawings. In the drawings, the Y direction is a first direction, the Z direction is a second direction, and the X direction is a third direction. The X, Y, and Z directions intersect with each other, and the following description will be based on the first direction Y, the second direction Z, and the third direction X.

[0053] The suspension system of the present application is applied to a vehicle, and the type of vehicle in the embodiments of the present application is not limited. The vehicle may be an engineering vehicle, a heavy-duty vehicle, or a passenger vehicle, etc.; similarly, the present application does not limit the power source of the vehicle. The vehicle may be a fuel vehicle, a plug-in hybrid vehicle, or a new energy vehicle, etc.

[0054] See also Figures 1 to 3 In some embodiments of the present application, the suspension system includes two composite leaf springs 1, which are spaced apart from each other in a first direction Y and are connected to the body of the vehicle; wherein the composite leaf spring 1 has a certain elasticity and is connected to the body and wheels of the vehicle, playing a role of shock absorption and buffering to ensure the stability of the vehicle during driving.

[0055] In some embodiments of the present application, the composite leaf spring 1 is extended along the third direction X.

[0056] In some embodiments of the present application, the suspension system further includes a connector 2, which is disposed between and connected to the two composite leaf springs 1, and the two ends of the connector 2 are respectively connected to the wheels of the vehicle; that is, the composite leaf spring 1 is connected to the wheels of the vehicle through the connector 2.

[0057] In the technical solution of the present application, the vehicle body and the vehicle wheels are connected by a composite leaf spring 1 and a connector 2, wherein the composite leaf spring 1 has a variable stiffness characteristic, that is, it can undergo corresponding deformation under different loads, thereby exhibiting different stiffness characteristics. In this way, the shock absorption capacity of the suspension system can be improved to improve the comfort of the driver and passengers.

[0058] In some embodiments of the present application, the composite leaf spring 1 is a single-piece leaf spring structure and is made of composite material. The composite leaf spring 1 can be made of carbon fiber reinforced plastic, glass fiber reinforced plastic, etc. Compared with the steel leaf spring supported by multiple steel plates stacked in the related technology, it has the advantages of light weight, corrosion resistance, adjustable elasticity, long fatigue life, and smaller space occupation.

[0059] In addition, the composite leaf spring 1 can be designed as a single-piece structure, which can also reduce the relative movement between components and reduce the risk of abnormal noise during vehicle driving.

[0060] In some embodiments of the present application, in the extension direction of the connector 2, at least a portion of the connector 2 is curved; by setting at least a portion of the connector 2 to be curved, the connector 2 can be twisted and bent when subjected to force. When the wheel at one end of the connector 2 bounces due to bumps, the connector 2 will generate a torsional torque due to its own elastic deformation, and then transmit the torsional torque to the wheel at the other end of the connector 2, so that the wheel at the other end of the connector 2 will also produce a certain movement, but due to the stiffness limitation of the connector 2, the amplitude of the mutual influence of the movement of the wheels at both ends of the connector 2 is small; that is, the curved setting of at least a portion of the connector 2 can improve the handling stability of the vehicle, so as to improve the stability of the vehicle during driving.

[0061] It is understandable that the structural arrangement of the composite leaf spring 1 and the connector 2 enables the suspension system to achieve an elastic connection between the vehicle body and the wheels, thereby significantly improving the vehicle's driving comfort, stability and load-bearing capacity.

[0062] In some embodiments of the present application, the connector 2 includes a connector body 21 and two first mounting portions 22, the connector body 21 is connected to two composite leaf springs 1; the two first mounting portions 22 are connected to the connector body 21, the first mounting portion 22 is located on one side of the composite leaf spring 1 in the first direction Y, and the first mounting portion 22 is configured to be connected to the wheel of the vehicle; such an arrangement makes the installation position of the wheel of the vehicle closer to the body of the vehicle in the second direction Z than the connector body 21, thereby effectively reducing the height of the vehicle chassis.

[0063] In some embodiments of the present application, a brake and a hub bearing are mounted on the first mounting portion 22 , and a wheel of the vehicle is mounted on the hub bearing.

[0064] See also Figure 3In some embodiments of the present application, the connector body 21 includes two first sub-segments 211, a second sub-segment 212, and two curved segments 213. The two first sub-segments 211 are respectively connected to the two composite leaf springs 1; the second sub-segment 212 is disposed between the two first sub-segments 211; the extension axis of the second sub-segment 212 is not co-linear with the extension axis of the first sub-segment 211, that is, the second sub-segment 212 is spaced apart from the first sub-segment 211 in the third direction X; and at least a portion of the curved segments 213 is curved, with the second sub-segment 212 connecting the two first sub-segments 211 via the two curved segments 213. This arrangement ensures that the connector body 21 can undergo torsional and bending deformation while also providing sufficient space on the vehicle chassis for components such as the motor and engine.

[0065] At the same time, since the connector body 21 has an avoidance function in the third direction X, it is not easy for the connector body 21 to interfere with the components such as the motor and engine installed on the chassis of the vehicle in the second direction Z, thereby allowing the suspension system to have sufficient range of motion in the second direction Z.

[0066] In some embodiments of the present application, the third direction X is from the front to the rear of the vehicle. In one embodiment of the present application, the second sub-segment 212 can be located closer to the front of the vehicle than the first sub-segment 211; in another embodiment of the present application, the second sub-segment 212 can be located closer to the rear of the vehicle than the first sub-segment 211.

[0067] See also Figure 1 In some embodiments of the present application, the connector body 21 has a cavity 3, which extends along the extension direction of the connector body 21; in this embodiment, the connector body 21 is made by an internal high-pressure forming process, and the connector body 21 is made of high-strength material to ensure the structural strength of the connector body 21 while reducing the weight of the connector body 21.

[0068] See also Figure 4 In some embodiments of the present application, the suspension system includes a connecting portion 31, which is fixedly connected to the connecting member 2. There is an installation space 13 between the connecting portion 31 and the connecting member 2, and at least a portion of the composite leaf spring 1 is located in the installation space 13; that is, in this embodiment, the mutual cooperation between the connecting portion 31 and the connecting member 2 can achieve the fixation between the connecting member 2 and the composite leaf spring 1.

[0069] In some embodiments of the present application, the connecting portion 31 is fixedly connected to the connector body 21 .

[0070] In some embodiments of the present application, the suspension system further includes a mating portion 32 , and the connecting portion 31 is fixed to the mating portion 32 , so that the connecting portion 31 is fixed to the connector body 21 .

[0071] In some embodiments of the present application, the connecting portion 31 is a U-shaped bolt, and the matching portion 32 is a nut; the inner side of the U-shaped nut forms an installation space 13 .

[0072] In one embodiment of the present application, a through hole is provided on the connecting member 2, the composite leaf spring 1 is placed in the installation space 13 in the U-shaped bolt, and then the U-shaped bolt is passed through the through hole on the connecting member 2 and cooperated with the nut to achieve relative fixation of the connecting member 2 and the composite leaf spring 1.

[0073] In some embodiments of the present application, the connector 2 includes a connector body 21, which is located on the side of the composite leaf spring 1 away from the vehicle body in the second direction Z, wherein the second direction Z is the direction of gravity, and the connector body 21 will be separated from the composite leaf spring 1 under the influence of gravity.

[0074] In some embodiments of the present application, at least a portion of the connecting portion 31 is arranged on the side of the composite leaf spring 1 facing away from the connector 2; in this manner, the connecting portion 31 connected to the composite leaf spring 1 is arranged on the side of the composite leaf spring 1 close to the vehicle body, and thus will not fall off the composite leaf spring 1 due to the influence of gravity, and thus when the connecting portion 31 is connected to the connector body 21, the composite leaf spring 1 and the connector body 21 can be fastened.

[0075] In some embodiments of the present application, the suspension system further includes a pressure-bearing portion 33, at least part of which is located in the installation space 13, and the pressure-bearing portion 33 is arranged on the composite leaf spring 1 and contacts the connecting portion 31; wherein, the pressure-bearing portion 33 is arranged on the side of the composite leaf spring 1 facing away from the connector body 21, and the pressure-bearing portion 33 is located between the connecting portion 31 and the composite leaf spring 1. When the connector body 21 and the composite leaf spring 1 are fixed to each other, the connecting portion 31 and the mating portion 32 can apply pressure to the pressure-bearing portion 33, thereby making the pressure-bearing portion 33 and the composite leaf spring 1 more firmly fit and fixed together, and the size of the pressure-bearing portion 33 is larger than that of the connecting portion 31, so that the contact area and friction between the pressure-bearing portion 33 and the composite leaf spring 1 are increased compared with the contact area and friction between the connecting portion 31 and the composite leaf spring 1, thereby improving the reliability and stability of the connection between the connector body 21 and the composite leaf spring 1.

[0076] In some embodiments of the present application, the connecting portion 31 is a U-shaped bolt and is fixed on the pressure-bearing portion 33. A limiting groove is provided on the pressure-bearing portion 33, and at least a portion of the U-shaped bolt can be embedded in the limiting groove to limit the movement of the U-shaped bolt in the third direction X.

[0077] In some embodiments of the present application, the pressure-bearing portion 33 is a die-casting part and is manufactured by a die-casting process, so that the structural strength of the pressure-bearing portion 33 is higher, thereby increasing the service life of the pressure-bearing portion 33 .

[0078] See also Figure 5 In some embodiments of the present application, one of the pressure-bearing part 33 and the composite leaf spring 1 is provided with a first groove 4, and the other of the pressure-bearing part 33 and the composite leaf spring 1 is provided with a first protrusion 5, and the first protrusion 5 is embedded in the first groove 4; through the setting of the first protrusion 5 and the first groove 4, the relative displacement between the pressure-bearing part 33 and the composite leaf spring 1 can be limited, thereby reducing the risk of abnormal noise during driving of the vehicle.

[0079] In one embodiment of the present application, the first protrusion 5 is provided on the composite leaf spring 1 , and the first groove 4 is provided on the pressure-bearing portion 33 .

[0080] In another embodiment of the present application, the first protrusion 5 is provided on the pressure-bearing portion 33 , and the first groove 4 is provided on the composite leaf spring 1 .

[0081] In some embodiments of the present application, one of the connector 2 and the composite leaf spring 1 is provided with a second groove 6, and the other of the connector 2 and the composite leaf spring 1 is provided with a second protrusion 7, which is embedded in the second groove 6. The provision of the second groove 6 and the second protrusion 7 can limit the relative displacement of the composite leaf spring 1 and the connector 2, thereby reducing the risk of abnormal noise during vehicle driving.

[0082] In one embodiment of the present application, the second groove 6 is provided on the composite leaf spring 1 , and the second protrusion 7 is provided on the connecting member 2 .

[0083] In another embodiment of the present application, the second groove 6 is provided on the connecting member 2 , and the second protrusion 7 is provided on the composite leaf spring 1 .

[0084] See also Figures 6 and 7 In some embodiments of the present application, the composite leaf spring 1 includes a composite leaf spring body 11 and at least one protective portion 12, the composite leaf spring body 11 is configured to be connected to the vehicle body; the protective portion 12 is connected to the composite leaf spring body 11, and the protective portion 12 is located between the composite leaf spring body 11 and the pressure-bearing portion 33 or the connector body 21; wherein the protective portion 12 can protect the composite leaf spring body 11 to prevent damage to the composite leaf spring body 11.

[0085] See also Figure 7In some embodiments of the present application, protective portions 12 are provided on both sides of the composite leaf spring body 11 in the second direction Z to protect both sides of the composite leaf spring body 11 in the second direction Z to avoid damage to the composite leaf spring body 11.

[0086] In some embodiments of the present application, the first protrusion 5 and the second protrusion 7 are respectively provided on the two protection parts 12 .

[0087] See also Figures 8 and 9 In some embodiments of the present application, the suspension system further includes a mounting structure 8 , which is configured to mount the composite leaf spring 1 on a vehicle body.

[0088] The mounting structure 8 includes at least one second mounting portion 81 and at least one mounting bracket 82. The mounting portion 81 is mounted on one end of the composite leaf spring 1, and the mounting bracket 82 is configured to be connected to the vehicle body; wherein, the second mounting portion 81 is rotatably connected to the mounting bracket 82; that is, in this embodiment, the composite leaf spring 1 is connected to the mounting bracket 82 via the second mounting portion 81 to avoid direct contact between the composite leaf spring 1 and the mounting bracket 82, thereby reducing wear of the composite leaf spring 1 during use.

[0089] At the same time, the mounting bracket 82 and the vehicle body are not integrally formed and a certain gap is left between them after being connected, thereby buffering the vibration transmitted to the vehicle body via the ground.

[0090] In some embodiments of the present application, a second mounting portion 81 is provided at both ends of the composite leaf spring 1; accordingly, two mounting brackets 82 are provided and both are connected to the vehicle body to reduce wear of the composite leaf spring 1 during use.

[0091] The shapes of the two mounting brackets 82 can be the same or different, and are designed according to the installation positions of the two mounting brackets 82 on the vehicle body.

[0092] See Figures 10 to 12 Since the two mounting brackets 82 are installed at different positions on the vehicle body, the shapes of the two mounting brackets 82 are also different.

[0093] In some embodiments of the present application, both mounting brackets 82 are made of a low-pressure aluminum alloy casting process, which not only meets the strength and durability requirements of various impacts generated by the vehicle under various working conditions, but also saves materials and reduces weight.

[0094] See also Figures 11 to 12 , Figure 11 is a cross-sectional view of one of the two mounting brackets 82 assembled with the vehicle body. Figure 11FIG. 8 is a cross-sectional view showing another one of the two mounting brackets 82 assembled with the vehicle body. Both mounting brackets 82 are mounted on the vehicle body by bolts.

[0095] See also Figure 9 In some embodiments of the present application, one of the two mounting brackets 82 can be integrally formed with the vehicle body. Such a configuration can reduce the complexity of bolting the mounting structure 8 to the vehicle body. The two mounting brackets 82 cooperate to mount the composite leaf spring 1 on the vehicle body, which can make the structure between the suspension system and the vehicle body more compact, thereby significantly improving the noise, vibration and harshness performance of the vehicle.

[0096] See also Figure 7 and Figure 13 In some embodiments of the present application, the mounting structure 8 further includes a third mounting portion 83, one end of the third mounting portion 83 is rotatably connected to the second mounting portion 81, and the other end of the third mounting portion 83 is rotatably connected to the mounting bracket 82; such a configuration can reduce the friction and wear between the composite leaf spring 1 and the mounting bracket 82, thereby significantly improving the durability and overall performance of the composite leaf spring 1.

[0097] In some embodiments of the present application, one of the two mounting brackets 82 is arranged near the front of the vehicle, and the other is arranged near the rear of the vehicle. A third mounting portion 83 is connected between the mounting bracket 82 arranged near the rear of the vehicle and the adjacent second mounting portion 81, and no third mounting portion 83 is arranged between the mounting bracket 82 arranged near the front of the vehicle and the adjacent second mounting portion 81. This arrangement is because the force borne by the end of the composite leaf spring 1 near the front of the vehicle is greater than the force borne by the end of the composite leaf spring 1 near the rear of the vehicle, and the end of the composite leaf spring 1 near the front of the vehicle needs to be fixed.

[0098] The main function of the third mounting portion 83 is to accommodate the displacement caused by the deformation of the composite leaf spring 1 when subjected to force, thereby ensuring the stability and reliability of the suspension system.

[0099] In some embodiments of the present application, the suspension system also includes a shock-absorbing structure 9, one end of the shock-absorbing structure 9 is connected to the connecting member 2, and the other end of the shock-absorbing structure 9 is connected to the body of the vehicle; by providing the shock-absorbing structure 9, the dynamic performance and stability of the vehicle are improved.

[0100] In some embodiments of the present application, the shock absorbing structure 9 is connected to the chassis of the vehicle.

[0101] In some embodiments of the present application, the shock absorbing structure 9 is a shock absorber.

[0102] The present application also provides a vehicle including a suspension system, wherein the suspension system is as described above. Since the vehicle adopts all the technical solutions of all the above embodiments, it has at least the beneficial effects brought by the technical solutions of the above embodiments, which will not be described in detail here.

[0103] There is no restriction on the type of vehicle in the embodiments of the present application. The vehicle may be an engineering vehicle, a heavy-duty vehicle, or a passenger vehicle, etc. Similarly, there is no restriction on the power source of the vehicle in the present application. The vehicle may be a fuel vehicle, a plug-in hybrid vehicle, or a new energy vehicle, etc.

[0104] See also Figure 14 In some embodiments of the present application, the vehicle further includes a top stop 10, which is mounted on the body of the vehicle; wherein at least a portion of the suspension system is arranged opposite to the top stop 10 in the second direction Z; wherein the top stop 10 can abut the suspension system in the second direction Z to prevent the suspension system from approaching the body of the vehicle, thereby avoiding interference and collision between the suspension system and the body of the vehicle.

[0105] In one embodiment of the present application, the stopper 10 is opposed to the composite leaf spring 1 in the second direction Z. In another embodiment of the present application, the stopper 10 is opposed to the connecting member 2 in the second direction Z. In yet another embodiment of the present application, the stopper 10 is disposed opposite the pressure-bearing portion 33 in the second direction Z. Furthermore, the stopper 10 can also be disposed opposite one or more components of the suspension system in the second direction Z to limit the movement of the suspension system in the second direction Z toward the vehicle body.

[0106] In addition, the abutting member 10 can also limit and prevent friction between the wheel connected to the connecting member 2 and the mudguard.

[0107] In some embodiments of the present application, vulcanized rubber is further provided on the side of the top support member 10 close to the suspension system. The vulcanized rubber can prevent the suspension system and the top support member 10 from colliding and producing abnormal noise, and at the same time avoid the risk of further compression and breakage of the composite leaf spring 1.

[0108] See also Figure 15 In some embodiments of the present application, the push member 10 and the pressure-bearing portion 33 are arranged relative to each other in the second direction Z to limit the limit of movement of the suspension system toward the vehicle body in the second direction Z, thereby avoiding interference and collision between the suspension system and the vehicle body.

[0109] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0110] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0111] The embodiments, implementation methods and related technical features of the present application can be combined and replaced with each other unless there is any conflict.

[0112] The above are merely preferred embodiments of the present application and do not constitute any form of limitation to the present application. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application are still within the scope of the technical solution of the present application.

Claims

1. A suspension system, characterized in that: include: two composite leaf springs, the two composite leaf springs being spaced apart from each other in a first direction, the composite leaf springs being configured to be connected to a body of a vehicle; and A connecting member is disposed between the two composite leaf springs and connected to the two composite leaf springs, and both ends of the connecting member are respectively configured to be connected to wheels.

2. The suspension system according to claim 1, wherein: In the extension direction of the connecting member, at least a portion of the connecting member is bent.

3. The suspension system according to claim 1, wherein: The connecting piece includes: A connector body connected to the two composite leaf springs; and Two first mounting portions are connected to the connector body, the first mounting portion is located on one side of the composite leaf spring in the first direction, and the first mounting portion is configured to be connected to a wheel.

4. The suspension system according to claim 3, characterized in that The connector body comprises: two first sub-segments, connected to the two composite leaf springs respectively; a second subsegment, disposed between two of the first subsegments; an extension axis of the second subsegment and an extension axis of the first subsegment are not on the same straight line; and Two curved segments, at least part of which is curved, and the second sub-segment is connected to the two first sub-segments via the two curved segments.

5. The suspension system according to claim 3, wherein: The connector body has a cavity, and the cavity extends along the extension direction of the connector body.

6. The suspension system according to claim 1, wherein: The composite leaf spring is a single-piece leaf spring structure.

7. The suspension system according to claim 1, wherein: The suspension system comprises: a connecting portion, the connecting portion being fixedly connected to the connecting member, a mounting space being defined between the connecting portion and the connecting member, and at least a portion of the composite leaf spring being located within the mounting space; A pressure-bearing portion, at least a portion of which is located in the installation space, and the pressure-bearing portion is provided on the composite leaf spring and in contact with the connecting portion.

8. The suspension system according to claim 7, wherein: The pressure-bearing part is a die-casting part.

9. The suspension system according to claim 1, wherein: Also included is a mounting structure configured to mount the composite leaf spring to a body of a vehicle.

10. The suspension system according to claim 9, wherein: The mounting structure includes: at least one second mounting portion mounted on one end of the composite leaf spring; and at least one mounting bracket configured to couple to a body of a vehicle; Wherein, the second mounting portion is rotatably connected to the mounting bracket.

11. The suspension system according to claim 10, wherein: The mounting structure further includes a third mounting portion, one end of the third mounting portion is rotatably connected to the second mounting portion, and the other end of the third mounting portion is rotatably connected to the mounting bracket.

12. The suspension system according to any one of claims 1 to 11, characterized in that: The composite leaf spring is a variable stiffness leaf spring.

13. The suspension system according to any one of claims 1 to 11, characterized in that: The composite material leaf spring is made of carbon fiber reinforced plastic and glass fiber reinforced plastic.

14. A vehicle, characterized in that: Comprising a suspension system as claimed in any one of claims 1 to 13.

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