Suspension system and vehicle

Abstract

The utility model provides a suspension system and a vehicle. The suspension system comprises a frame, a plate spring assembly, a shock absorber and a first mounting bracket. The shock absorber and the plate spring assembly are respectively connected with the frame, and the first mounting bracket is made of a composite material and is connected with the shock absorber and the plate spring assembly. According to the suspension system provided by the invention, the plate spring assembly is connected with the shock absorber through the first mounting bracket, so that the stability of a vehicle body structure can be improved, the damage of road surface vibration to the plate spring assembly and the shock absorber is reduced, and the service life of the shock absorber and the plate spring assembly is prolonged; the first mounting bracket is made of a composite material, so that the weight of the suspension system can be reduced.

Description

Technical Field

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

[0002] The suspension system of a vehicle generally includes structures such as a vehicle frame, an axle, a leaf spring, and a shock absorber, which is the main structure of the vehicle and accounts for most of the vehicle's weight. The leaf spring is an elastic element, and its main function is to bear the vehicle weight and reduce the vibration and impact generated by the uneven road surface during vehicle driving. The shock absorber is arranged between the vehicle frame and the axle, and is mainly used to control the spring vibration and elastic rebound caused by the uneven road surface during vehicle driving, thereby improving the stability, comfort, and safety of the vehicle.

[0003] With the continuous development of technology, more and more functions are integrated into vehicles. However, when existing vehicles drive on poor road conditions, large vibrations are likely to occur, which can cause damage to the leaf spring and the shock absorber, resulting in the failure of the leaf spring and the shock absorber; at the same time, the overall vehicle weight is relatively heavy, which is not conducive to the lightweight development of the vehicle. Summary of the Utility Model

[0004] The purpose of the present application is to provide a suspension system and a vehicle that are light in weight and have a stable structure.

[0005] The present application provides a suspension system, including: a vehicle frame, a leaf spring assembly, a shock absorber, and a first mounting bracket; the shock absorber and the leaf spring assembly are respectively connected to the vehicle frame, and the first mounting bracket is made of a composite material and connects the shock absorber and the leaf spring assembly.

[0006] Further, the first mounting bracket includes a first connecting portion and a mounting portion that are connected to each other; the first connecting portion is fixedly integrated with the leaf spring assembly, and the mounting portion is pivotally connected to the shock absorber shaft.

[0007] Further, the leaf spring assembly includes a leaf spring, the leaf spring includes a first end and a second end that are opposite to each other, the first end and the second end are respectively connected to the vehicle frame, and the first connecting portion is connected to the leaf spring and is located between the first end and the second end.

[0008] Further, the leaf spring assembly further includes a first fixing member fixed to the leaf spring, the first fixing member includes a first fixing portion, and at least part of the first connecting portion is located between the leaf spring and the first fixing portion.

[0009] Further, the leaf spring assembly further includes a first cushion plate located between the first connecting portion and the leaf spring, the first cushion plate is made of a non-metallic material or a metallic material with a non-metallic material provided on the surface in contact with the leaf spring.

[0010] Further, the leaf spring assembly further includes a second backing plate located between the first fixing portion and the first connecting portion. The second backing plate is made of a non-metallic material or made of a metallic material with a non-metallic material provided on its surface.

[0011] Further, the leaf spring assembly further includes a second fixing member. The second fixing member includes a second fixing portion, and the leaf spring is located between the second fixing portion and the first connecting portion.

[0012] Further, the leaf spring assembly further includes a third backing plate located between the leaf spring and the second fixing portion. The third backing plate is made of a non-metallic material or made of a metallic material with a non-metallic material provided on the surface in contact with the leaf spring.

[0013] Further, the leaf spring is made of a composite material.

[0014] This application also provides a vehicle, including the above suspension system.

[0015] For the suspension system provided in this application, the leaf spring assembly and the shock absorber are connected through the first mounting bracket, which can improve the stability of the vehicle body structure, reduce the damage to the leaf spring assembly and the shock absorber caused by road vibrations, and improve the service life of the shock absorber and the leaf spring assembly; the first mounting bracket is made of a composite material, which can reduce the weight of the suspension system. It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit this specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings here are incorporated into the specification and form a part of this specification, showing the embodiments in line with this specification, and are used together with the specification to explain the principles of this specification.

[0017] Figure 1 is a schematic diagram of the suspension system of this application, where only a part of the vehicle frame is shown.

[0018] Figure 2 is Figure 1 an enlarged view of the part shown in the dotted box.

[0019] Figure 3 is Figure 1 a schematic diagram of the leaf spring assembly and the first mounting bracket shown.

[0020] Figure 4 is Figure 3 a cross-sectional view of the first mounting bracket shown.

[0021] Figure 5 is Figure 4 a cross-sectional view of the first mounting bracket along the A-A direction shown.

[0022] Figure 6 is Figure 3 a cross-sectional view of the schematic diagram shown in

[0023] Figure 7 is Figure 3 a schematic diagram of the first fixing member and the second fixing member shown in

[0024] Figure 8 is Figure 3 a schematic diagram of the first backing plate shown in

[0025] Figure 9 is Figure 8 a sectional view of the first backing plate along the B-B direction shown in

[0026] Explanation of reference numerals: 1, vehicle frame; 11, cross beam; 12, longitudinal beam; 2, leaf spring assembly; 201, first end; 202, second end; 21, leaf spring; 211, first leaf spring; 212, second leaf spring; 22, first fixing member; 221, first fixing portion; 222, first extending portion; 223, first fixing bolt; 224, first weight-reducing hole; 23, second fixing member; 231, second fixing portion; 232, second extending portion; 233, second fixing bolt; 234, second weight-reducing hole; 24, first backing plate; 241, backing plate body; 242, buffer portion; 25, second backing plate; 26, third backing plate; 27, third fixing member; 271, second connecting portion; 272, third fixing portion; 28, U-bolt; 3, shock absorber; 4, first mounting bracket; 41, first connecting portion; 42, mounting portion; 421, receiving cavity; 43, connecting shaft; 44, bushing; 5, second mounting bracket; 6, inclined backing plate; 7, limiting member; 8, limiting bracket; 9, hanger ear. Detailed implementation manners

[0027] Next, the embodiments of this specification will be described in detail.

[0028] Here, in conjunction with the drawings, the technical solutions in the embodiments (or "implementation manners") of this application will be clearly and completely described. When the following description involves the drawings, unless otherwise indicated, the same numerals in different drawings represent the same or similar elements.

[0029] If there are terms related to directional indication or positional relationship in the embodiments of the present application (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial direction, radial direction, circumferential direction, etc.), such terms are only used to explain the relative positional relationship, movement conditions, etc. between components in a specific posture (as shown in the attached drawings); if the specific posture changes, the directional indication or positional relationship will also change accordingly. In addition, the terms "first", "second", etc. involved in the embodiments of the present application are only for the purpose of convenient description and cannot be construed as indicating or implying relative importance.

[0030] Please refer Figure 1 As shown, the present application provides an integrated leaf spring suspension system for a shock absorber composite mounting plate, including: a vehicle frame 1, a leaf spring assembly 2, a shock absorber 3, and a first mounting bracket 4. The shock absorber 3 and the leaf spring assembly 2 are respectively connected to the vehicle frame 1, and the first mounting bracket 4 is made of a composite material and connects the shock absorber 3 and the leaf spring assembly 2.

[0031] In the integrated leaf spring suspension system for a shock absorber composite mounting plate provided by the present application, the leaf spring assembly is integrally fixed to the first mounting bracket, and the shock absorber is connected to the axle through the first mounting bracket, reducing the damage to the leaf spring assembly and the shock absorber caused by road surface vibration and improving the service life of the shock absorber and the leaf spring assembly; the first mounting bracket is made of a composite material, which can reduce the weight of the suspension system.

[0032] The vehicle frame 1 includes at least a pair of longitudinal beams 12 and a plurality of cross beams 11 disposed between the pair of longitudinal beams 12. The leaf spring assembly 2 and the shock absorber 3 are respectively connected to the longitudinal beams 12. The leaf spring assembly 2 is located below the longitudinal beams 12, one end of the shock absorber 3 is connected to the first mounting bracket 4, and the other end is connected to the longitudinal beam 12. The first mounting bracket 4 is located below the leaf spring assembly 2 and can act as a backing plate, reducing the impact and vibration transmission between the leaf spring assembly 2 and the vehicle frame 1, improving the NVH (Noise-Vibration-Hashness) performance of the suspension system, and at the same time, eliminating the need for an additional backing plate, reducing the number of components and the assembly workload, reducing weight and improving the assembly beat.

[0033] The suspension system provided by the present application further includes a second mounting bracket 5, and the second mounting bracket 5 connects the longitudinal beam 12 and the shock absorber 3. The second mounting bracket 5 is connected to one end of the shock absorber 3, and the second mounting bracket 5 is fixed to the longitudinal beam 12 by bolts or rivets, thereby connecting the shock absorber 3 and the longitudinal beam 12.

[0034] The second mounting bracket 5 can also be fixed to the longitudinal beam 12 by welding, and the present application does not limit this.

[0035] Please refer Figures 1 to 5As shown, the first mounting bracket 4 includes a first connecting portion 41 and a mounting portion 42 that are connected to each other. The first connecting portion 41 is fixedly integrated with the leaf spring assembly 2, and the mounting portion 42 is axially connected to the shock absorber 3.

[0036] The mounting portion 42 and the first connecting portion 41 are made of a composite material, which is a glass fiber and epoxy resin composite material. It has the advantages of light weight and high fatigue life, and can improve the light weight of the suspension system. At the same time, the glass fiber and epoxy resin composite material has excellent corrosion resistance, which can effectively enhance the corrosion resistance to oil, acid, salt, etc., thereby improving the service life.

[0037] In other embodiments, the composite material can also be carbon fiber material or basalt material, etc. The present application does not limit this.

[0038] The mounting portion 42 and the first connecting portion 41 are integrally formed and extend from the first connecting portion 41 to one side. The first mounting bracket 4 further includes a connecting shaft 43. The connecting shaft 43 is disposed on the mounting portion 42, and the shock absorber 3 is connected to the mounting portion 42 through the connecting shaft 43.

[0039] A receiving cavity 421 is formed in the mounting portion 42 for receiving the connecting shaft 43. The first mounting bracket 4 further includes a bushing 44. The bushing 44 is sleeved outside the connecting shaft 43 and is located in the receiving cavity 421, thereby improving the force condition of the connecting shaft 43 in the receiving cavity 421 and enhancing the wear resistance of the connecting shaft 43.

[0040] In some embodiments, the bushing 44 is a metal steel sleeve. In other embodiments, the bushing 44 can also be made of other non-metallic materials. The present application does not limit this.

[0041] Please refer Figures 1 to 3 As shown, the leaf spring assembly 2 includes a leaf spring 21. The leaf spring 21 includes a first end 201 and a second end 202 that are opposite to each other. The first end 201 and the second end 202 are respectively connected to the vehicle frame 1. The first connecting portion 41 is fixedly integrated with the leaf spring 21 and is located between the first end 201 and the second end 202. Specifically, the first connecting portion 41 is located at the middle position of the leaf spring 21.

[0042] The leaf spring 21 is made of a composite material, which is a glass fiber and epoxy resin composite material. This composite material has a light weight, and its density is only one-fourth of that of a steel plate, which can improve the light weight of the suspension system. This composite material has a high fatigue life and can improve the service life of the leaf spring 21. At the same time, the glass fiber and epoxy resin composite material has excellent corrosion resistance, which can effectively enhance the corrosion resistance to oil, acid, salt, etc., thereby improving the service life.

[0043] In other embodiments, the composite material can also be carbon fiber material, basalt material, etc., and the present application does not limit this.

[0044] The leaf spring 21 and the first mounting bracket 4 of the present application can be made of the same composite material, or can be made of different composite materials respectively, and the present application does not limit this.

[0045] For the suspension system provided by the present application, both the leaf spring 21 and the first mounting bracket 4 are made of composite materials. Compared with the leaf spring 21 and the first mounting bracket 4 made of steel materials in the traditional way, the weight can be reduced by more than 72%, thereby improving the lightweight degree and braking performance of the suspension system, increasing the comfort of the suspension system while reducing the damage to the road surface, making the suspension system have both practicability and economy.

[0046] The leaf spring assembly 2 further includes third fixing members 27. There are two third fixing members 27 and they are respectively located at both ends of the leaf spring 21, and are used to connect the first end 201 and the second end 202 of the leaf spring 21 to the vehicle frame 1 respectively. The third fixing member 27 is made of metal.

[0047] The traditional leaf spring 21 will form eyelets at the first end 201 and the second end 202, and the eyelets at the first end 201 and the second end 202 are respectively connected to the vehicle frame 1 through pin shafts. Since the leaf spring 21 is made of composite material, compared with metal materials, the shear strength of the composite material is insufficient, and the leaf spring 21 is prone to break when stressed at the eyelets. Therefore, in the present application, the third fixing member 27 is used to replace the eyelets formed by the leaf spring 21, and the first end 201 and the second end 202 of the leaf spring 21 are respectively connected to the vehicle frame 1, which can play a protective role for the leaf spring 21 and prevent the leaf spring 21 from breaking due to a large shear force.

[0048] The third fixing member 27 includes an integrally formed third fixing portion 272 and a second connecting portion 271. The third fixing portion 272 is U-shaped, and the two side edges of the U-shaped portion of the third fixing portion 272 are respectively fixed to two opposite end faces of the first end 201 or the second end 202 of the leaf spring 21 by bolts or riveting to connect the third fixing member 27 to the first end 201 or the second end 202 of the leaf spring 21.

[0049] The first end 201 of the leaf spring 21 is a fixed end, and the opposite second end 202 is a movable end. The suspension system further includes a hanger 9. The second connecting portion 271 of the third fixing member 27 connected to the first end 201 of the leaf spring 21 is connected to the vehicle frame 1 through a fixing bracket. The second connecting portion 271 of the third fixing member 27 connected to the second end 202 of the leaf spring 21 is connected to the vehicle frame 1 through the hanger 9, so that the second connecting portion 271 can drive the second end 202 of the leaf spring 21 to rotate by rotating around the vehicle frame 1 through the hanger 9.

[0050] The leaf spring 21 is a single-layer leaf spring. Therefore, compared with the traditional automotive leaf spring composed of multiple leaf spring plates, there is no need to design accessories to fix or guide the multiple leaf spring plates, thereby reducing the mass of the suspension system and improving the lightweight level of the suspension system.

[0051] Please refer Figure 2 , Figure 3 , Figure 6 and Figure 7 As shown, the leaf spring assembly 2 further includes a first fixing member 22 fixed to the leaf spring 21. The first fixing member 22 includes a first fixing portion 221, and at least a part of the first connecting portion 41 is located between the leaf spring 21 and the first fixing portion 221.

[0052] In the embodiment of the present application, the first fixing member 22 further includes a first fixing bolt 224. A first through hole (not shown in the figure) for the first fixing bolt 224 to penetrate is provided on the first fixing portion 221, and the first fixing bolt 224 passes through the first through hole to fix the first fixing portion 221 to the leaf spring 21.

[0053] In other embodiments, the first fixing portion 221 can also be fixed to the first connecting portion 41 by welding, bonding or connecting with a protective bracket, and the present application does not limit this.

[0054] A plurality of first weight-reducing holes 223 are provided on the first fixing portion 221 to reduce the weight of the first fixing portion 221, thereby improving the lightweight level of the suspension system.

[0055] The leaf spring assembly 2 further includes a first cushion plate 24 located between the first connecting portion 41 and the leaf spring 21. The first cushion plate 24 is used to reduce the stress concentration on the contact surface between the first connecting portion 41 and the leaf spring 21, thereby improving the service life of the first connecting portion 41 and the leaf spring 21; the first cushion plate 24 can also block the friction between the first connecting portion 41 and the leaf spring 21, thereby improving the NVH performance of the suspension system.

[0056] The leaf spring assembly 2 further includes a second fixing member 23. The second fixing member 23 includes a second fixing portion 231, and the leaf spring 21 is located between the second fixing portion 231 and the first connecting portion 41.

[0057] In the embodiment of the present application, the second fixing member 23 further includes a second fixing bolt 234. A second through hole (not shown in the figure) for the second fixing bolt 234 to penetrate is provided on the second fixing portion 231, and the second fixing bolt 234 passes through the second through hole to fix the second fixing portion 231 to the leaf spring 21.

[0058] In other embodiments, the second fixing portion 231 can also be fixed to the leaf spring 21 by bonding, welding or connecting with a protective bracket, and the present application does not limit this.

[0059] A plurality of second weight reduction holes 233 are provided on the second fixing portion 231 to reduce the weight of the second fixing portion 231, thereby improving the lightweight level of the suspension system.

[0060] The leaf spring 21 includes a first leaf spring 211 and a second leaf spring 212. The first leaf spring 211 and the second leaf spring 212 are integrally formed. The first leaf spring 211 and the second leaf spring 212 are butt-jointed at the head and tail, and are fixed by the first fixing portion 221 and the second fixing portion 231 to form a leaf spring 21. The first leaf spring 211 and the second leaf spring 212 are integrally formed and then fixed by the second fixing portion 231, which can provide a more uniform stress distribution, help reduce the fatigue degree of the leaf spring 21 during long-term use, and extend its service life.

[0061] In other embodiments, the first leaf spring 211 and the second leaf spring 212 may also be integrally formed, and the present application does not limit this.

[0062] The leaf spring assembly 2 further includes a U-bolt 28. The suspension system further includes an axle (not shown in the figure). The U-bolt 28 is located at the middle position of the leaf spring 21 and is used to fix the leaf spring 21 and the first mounting bracket 4 to the axle.

[0063] One end of the U-bolt 28 abuts against the second fixing portion 231, and the other end is fixed to the axle by a bolt. In the present application, two U-bolts 28 are provided. In other embodiments, only one U-bolt 28 may also be provided, and the present application does not limit this.

[0064] The suspension system further includes a limiting member 7 and a limiting bracket 8. The limiting member 7 is fixed to the second fixing portion 231 by the U-bolt 28 and is located between the vehicle frame 1 and the leaf spring assembly 2. The limiting bracket 8 is fixed to the vehicle frame 1 by riveting, which limits the maximum stroke that the leaf spring 21 can compress when being pressed, thereby ensuring that when the suspension system encounters relatively large vibrations, the leaf spring 21 will not be compressed excessively and damaged, thereby improving the service life of the leaf spring 21.

[0065] The first fixing member 22 further includes first extending portions 222 extending from both sides of the first fixing portion 221. The second fixing member 23 further includes second extending portions 232 extending from both sides of the second fixing portion 231. When the U-bolt 28 fixes the leaf spring 21 and the first mounting bracket 4 to the axle, the first extending portions 222 and the second extending portions 232 come into contact with the U-bolt 28, which can bear the vertical force generated by the U-bolt 28, protect the leaf spring 21 and the first mounting bracket 4, thereby improving the service life of the leaf spring 21 and the first mounting bracket 4, and avoiding the misalignment of the leaf spring 21 and the first mounting bracket 4 due to vibrations or other reasons during use.

[0066] The first extension part 222 is not in contact with the second extension part 232, and there is a certain gap between the first extension part 222 and the second extension part 232. In this application, there are four first extension parts 222 and four second extension parts 232 respectively, so as to correspond to the two U-shaped bolts 28. There is a gap between the first extension parts 222 on the same side, and there is also a gap between the second extension parts 232 on the same side, thereby reducing the weight of the first fixing part 22 and the second fixing part 23 and improving the lightweight level of the leaf spring suspension system.

[0067] In other embodiments, there may be only two first extension parts 222 and two second extension parts 232 respectively. There is only one first extension part 222 and one second extension part 232 left on one side of the first fixing part 221 and the second fixing part 231 and they are in contact with the two U-shaped bolts 28 respectively. This application does not limit this.

[0068] In the suspension system provided by this application, the first fixing part 22 and the second fixing part 23 are integrally formed and independent of each other. In other embodiments, the first fixing part 22 and the second fixing part 23 may also be integrally formed, and are fixed to the leaf spring 21 and the first mounting bracket 4 on both sides respectively. This application does not limit this.

[0069] The leaf spring assembly 2 further includes a second cushion plate 25 located between the first fixing part 221 and the first connecting part 41 and a third cushion plate 26 located between the second fixing part 231 and the leaf spring 21.

[0070] The second cushion plate 25 is used to reduce the stress between the first fixing part 221 and the first connecting part 41 and improve the service life of the first connecting part 41; at the same time, the second cushion plate 25 can isolate the friction between the first fixing part 221 and the first connecting part 41 and improve the NVH level of the suspension system.

[0071] The third cushion plate 26 is used to reduce the stress between the second fixing part 231 and the leaf spring 21 and improve the service life of the leaf spring 21; at the same time, the third cushion plate 26 isolates the friction between the second fixing part 231 and the leaf spring 21 and improves the NVH level of the suspension system.

[0072] The first cushion plate 24, the second cushion plate 25 and the third cushion plate 26 are all made of non-metallic materials or made of metallic materials with non-metallic materials provided on the surface.

[0073] In other embodiments, the first cushion plate 24, the second cushion plate 25 and the third cushion plate 26 may also be made of different materials. This application does not limit this.

[0074] Please refer to Figure 6 、 Figure 8 and Figure 9As shown, the first backing plate 24 includes a backing plate body 241 and a buffer portion 242. The buffer portion 242 surrounds the periphery of the backing plate body 241. In some embodiments, the buffer portion 242 is made of rubber material, and the backing plate body 241 is made of metal material. In some embodiments, the buffer portion 242 is fixed to the backing plate body 241 by processes such as vulcanization.

[0075] The stress at the two ends of the first backing plate 24, the first connecting portion 41, and the leaf spring 21 is the most concentrated. Therefore, buffer portions 242 are provided at both ends of the first backing plate 24. The buffer portions 242 are in contact with the first connecting portion 41 and the leaf spring 21. The buffer portions 242 are relatively soft in texture and can reduce the damage caused to the first connecting portion 41 and the leaf spring 21 due to stress concentration, thereby increasing the service life of the first connecting portion 41 and the leaf spring 21.

[0076] The second backing plate 25 and the third backing plate 26 have the same structure as the first backing plate 24, and thus will not be elaborated in this application.

[0077] Please refer Figure 3 and Figure 6 As shown, the suspension system provided by this application further includes an inclined backing plate 6. The inclined backing plate 6 is disposed between the axle and the first connecting portion 41. The inclined backing plate 6 can reduce the impact and vibration transmission between the leaf spring 21, the first mounting bracket 4, and the axle, thereby reducing the bumpiness and vibration inside the vehicle, and helping to protect the leaf spring 21 and the first mounting bracket 4 from being damaged by excessive impact, and increasing the service life of the leaf spring 21 and the first mounting bracket 4.

[0078] This application also provides a vehicle including the above suspension system. The vehicles described in this application include heavy commercial vehicles, light commercial vehicles, ordinary automobiles, etc., and this application does not make any restrictions on this.

[0079] It should be noted that the technical solutions or technical features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of this application is not limited to the precise structures described in the above embodiments and shown in the drawings; any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of this application shall be included within the scope of protection of this application.

Claims

1. A suspension system, characterized in that, Comprising: A vehicle frame, a leaf spring assembly, a shock absorber, and a first mounting bracket; The shock absorber and the leaf spring assembly are respectively connected to the vehicle frame, and the first mounting bracket is made of a composite material and connects the shock absorber and the leaf spring assembly.

2. The suspension system according to claim 1, characterized in that, The first mounting bracket includes a first connecting portion and a mounting portion connected to each other; the first connecting portion is fixedly integrated with the leaf spring assembly, and the mounting portion is connected to the shock absorber shaft.

3. The suspension system according to claim 2, wherein, The leaf spring assembly includes a leaf spring, the leaf spring includes opposite first and second ends, the first end and the second end are respectively connected to the vehicle frame, and the first connecting portion is connected to the leaf spring and is located between the first end and the second end.

4. The suspension system according to claim 3, wherein, The leaf spring assembly further includes a first fixing member fixed to the leaf spring, the first fixing member includes a first fixing portion, and at least a part of the first connecting portion is located between the leaf spring and the first fixing portion.

5. The suspension system according to claim 4, characterized in that, The leaf spring assembly further includes a first spacer located between the first connecting portion and the leaf spring, the first spacer is made of a non-metallic material or a metallic material and has a non-metallic material provided on a surface in contact with the leaf spring.

6. The suspension system according to claim 4, characterized in that, The leaf spring assembly further includes a second spacer located between the first fixing portion and the first connecting portion, the second spacer is made of a non-metallic material or a metallic material and has a non-metallic material provided on a surface in contact with the leaf spring.

7. The suspension system according to claim 4, characterized in that The leaf spring assembly further includes a second fixing member, the second fixing member includes a second fixing portion, and the leaf spring is located between the second fixing portion and the first connecting portion.

8. The suspension system according to claim 7, wherein, The leaf spring assembly further includes a third spacer located between the leaf spring and the second fixing portion, the third spacer is made of a non-metallic material or a metallic material and has a non-metallic material provided on a surface in contact with the leaf spring.

9. The suspension system according to any one of claims 2 to 8, characterized in that, The leaf spring is made of a composite material.

10. A vehicle, characterized in that, Including the suspension system according to any one of claims 1-9.

Images