McPherson air spring strut assembly and vehicle

Abstract

The present application provides a McPherson air spring strut assembly and a vehicle. The McPherson air spring strut assembly includes a spring body, a mounting assembly, a damper rod assembly and an additional air chamber assembly, wherein the damper rod assembly is arranged at the lower part of the spring body, the mounting assembly is arranged at the upper part of the spring body, and the additional air chamber assembly is arranged at the upper part of the mounting assembly; a main air chamber is formed in the spring body, and a secondary air chamber is formed in the additional air chamber assembly, and the main air chamber can be connected to the secondary air chamber. The McPherson air spring strut assembly and the vehicle of the present application have adjustable stiffness, and have strong comfort and stability.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a McPherson air spring strut assembly and a vehicle. Background Art

[0002] As people's demand for vehicles has increased significantly, the requirements for vehicle comfort and handling have become higher and higher, and air springs have been widely used in the field of vehicle technology.

[0003] Air springs use the high pressure, compressibility, and releaseability of sealed air to achieve static load bearing and dynamic rebound. They have the functions of alleviating impact and reducing vibration, achieving consistency of the vehicle body's natural frequency, and improving ride comfort. The stiffness performance of air springs is mainly adjusted by matching and adjusting the volume change rate and the effective pressure-bearing area change rate of the air spring.

[0004] Traditional single-chamber air springs do not have a mechanism to adjust the volume of the air chamber. The volume of the air chamber cannot be adjusted during use, resulting in a higher stiffness of the air spring and reduced driving comfort and smoothness. In actual use, it is impossible to design reasonable air spring parameters within a limited space to adapt to complex and changeable driving conditions, and the advantages of air springs cannot be brought into play.

[0005] Therefore, it is necessary to provide an improved McPherson air spring strut assembly and a vehicle to solve the above problems. Summary of the invention

[0006] The present application provides a McPherson air spring strut assembly with adjustable stiffness and a vehicle.

[0007] The present application discloses a McPherson air spring strut assembly, comprising a spring body, a mounting assembly, a damper rod assembly and an additional air chamber assembly, wherein the damper rod assembly is arranged at the lower part of the spring body, the mounting assembly is arranged at the upper part of the spring body, and the additional air chamber assembly is arranged at the upper part of the mounting assembly; a main air chamber is formed in the spring body, a secondary air chamber is formed in the additional air chamber assembly, and the main air chamber can be communicated with the secondary air chamber.

[0008] Furthermore, it also includes a solenoid valve, which is arranged inside the additional air chamber assembly and is used to control the connection and disconnection of the auxiliary air chamber and the main air chamber.

[0009] Furthermore, the additional air chamber assembly includes an inner wall and an outer wall, and the auxiliary air chamber is formed between the inner wall and the outer wall.

[0010] Furthermore, the mounting assembly includes a lower mounting seat and a sealing cover, the upper end of the lower mounting seat is fixed to the sealing cover, and the lower end of the lower mounting seat is connected to the spring body; the additional air chamber assembly is fixed on the sealing cover, a connecting cavity is formed in the sealing cover, and the auxiliary air chamber is connected to the main air chamber through the connecting cavity.

[0011] Furthermore, a plurality of first vent holes are provided on a side of the auxiliary air chamber close to the sealing cover; a plurality of second vent holes are provided on a side of the connecting cavity close to the additional air chamber assembly, and the second vent holes are connected to the first vent holes.

[0012] Furthermore, an annular transition cavity is formed between the sealing cover and the additional air chamber assembly, and the transition cavity is communicated with the first vent hole and the second vent hole respectively.

[0013] Furthermore, the sealing cover includes a first sealing portion and a second sealing portion extending from top to bottom, the side surface of the first sealing portion forms a first sealing surface, the top surface of the second sealing portion forms a second step surface, and the first sealing surface, the second step surface and the additional air chamber assembly together form the transition cavity.

[0014] Furthermore, the mounting assembly further comprises an upper mounting seat, and the sealing cover is fixed on the lower mounting seat via the upper mounting seat; the upper mounting seat covers the outer sides of the lower mounting seat and the sealing cover.

[0015] Furthermore, the mounting assembly also includes a mounting plate rotatably connected to the lower mounting seat and the upper mounting seat; a second fastener is provided on the mounting plate.

[0016] Furthermore, a lower end seat is provided at the lower part of the spring body, and the lower end seat is connected to the damper rod assembly; a receiving hole for receiving the damper rod assembly is provided on the lower end seat, and the receiving hole is eccentrically arranged.

[0017] The present application also discloses a vehicle, comprising the MacPherson air spring strut assembly as described above.

[0018] The McPherson air spring strut assembly and vehicle of the present application are provided with an additional air chamber assembly. The auxiliary air chamber in the additional air chamber assembly can be connected to the main air chamber in the spring body, so that the overall air chamber volume of the McPherson air spring can be changed, and the stiffness of the McPherson air spring strut assembly can be adjusted, thereby improving the stability and comfort of the McPherson air spring strut assembly in different application scenarios.

[0019] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the specification and, together with the description, serve to explain the principles of the specification.

[0021] Figure 1 It is a stereoscopic diagram of the first embodiment of the McPherson air spring strut assembly of the present application.

[0022] Figure 2 yes Figure 1 Cross-sectional view of the McPherson air spring strut assembly.

[0023] Figure 3 yes Figure 2 A partial enlarged view of point A in the middle.

[0024] Figure 4 yes Figure 2 A partial enlarged view of the upper part of the middle McPherson air spring strut assembly.

[0025] Figure 5 yes Figure 2 A partial enlarged view of the additional air chamber assembly and mounting components.

[0026] Figure 6 It is a cross-sectional view of the upper mounting seat of the mounting assembly of the present application.

[0027] Figure 7 It is a top view of the upper mounting seat of the mounting assembly of the present application.

[0028] Figure 8 It is a cross-sectional view of the lower mounting seat of the mounting assembly of the present application.

[0029] Fig. 9 It is a top view of the lower mounting base of the mounting assembly of the present application.

[0030] Fig.10 It is a schematic diagram of the assembly of the upper mounting seat and the lower mounting seat of the mounting assembly of this application.

[0031] Fig.11 yes Figure 2 A partial enlarged view of point B in the middle.

[0032] Fig.12 yes Figure 2 A partial enlarged view of point C in the middle.

[0033] Fig.13 It is a stereoscopic diagram of the second embodiment of the McPherson air spring strut assembly of the present application.

[0034] Fig.14 yes Fig.13 Cross-sectional view of the McPherson air spring strut assembly.

[0035] Fig.15yes Fig.14 A partial enlarged view of .

[0036] Description of Figure Numbers:

[0037] 100, spring body; 110, main air chamber; 120, upper top seat; 121, support body; 122, end plate; 123, first buckling portion; 124, first buckling ring; 125, push ring; 130, lower end seat; 131, receiving hole; 132, second buckling portion; 133, second buckling ring; 140, bladder skin; 150, dust cover;

[0038] 200, installation assembly; 210, lower mounting seat; 211, lower stopper; 212, upper connecting part; 213, lower connecting part; 2131, fourth sealing member; 214, positioning hole; 215, main ring installation; 220, sealing cover; 220', sealing cover; 221, connecting cavity; 221', connecting cavity; 222, first sealing part; 2221, first sealing member; 2222, first step surface; 2223, first sealing surface; 2224, mounting bolt; 223, second sealing part; 2231, second sealing member; 2232, second step surface; 2233, second sealing surface; 2234, second vent hole; 2235, stopper; 224, third sealing part; 2241, third sealing member; 2241', third sealing member; 2242, third step surface; 2242', third step surface; 2243, third Sealing surface; 2243', third sealing surface; 225, abutment portion; 225', abutment portion; 230, upper mounting seat; 231, crimping portion; 2311, positioning top screw; 232, connecting portion; 2321, outer stop portion; 233, reinforcing rib; 234, through hole; 240, mounting plate; 241, clamping portion; 242, bending portion; 243, first limiting portion; 244, second limiting portion; 245, protruding portion ; 2451, lug; 246, second fastener; 247, first annular groove; 248, second annular groove; 250, upper bearing assembly; 251, first seat ring; 252, second seat ring; 253, first sliding ring; 254, first buffer; 260, lower bearing assembly; 261, third seat ring; 262, fourth seat ring; 263, second sliding ring; 264, second buffer; 270, mounting groove;

[0039] 300, damper rod assembly; 310, piston rod; 311, fourth fastener; 312, fifth sealing member; 313, sealing gasket; 320, oil storage cylinder; 330, top glue; 340, buffer block; 350, damper sealing cover;

[0040] 400, additional air chamber assembly; 410, auxiliary air chamber; 420, inner wall; 421, accommodating space; 430, outer wall; 440, supporting wall; 450, connecting wall; 460, solenoid valve; 470, first vent hole; 480, adapter chamber.

[0041] 500. Longitudinal axis. DETAILED DESCRIPTION

[0042] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementations described in the following exemplary embodiments do not represent all implementations consistent with this specification. Instead, they are merely examples of devices and methods consistent with some aspects of this specification as detailed in the appended claims.

[0043] The terms used in this application are only for the purpose of describing specific embodiments and are not intended to limit this specification. Unless otherwise defined, the technical terms or scientific terms used in this specification should be understood by people with ordinary skills in the field to which this application belongs. The words "first", "second" and similar words used in this specification and claims do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "one" do not indicate a quantitative limit, but indicate the existence of one. "Multiple" or "several" means two or more. Unless otherwise specified, words such as "front", "rear", "lower" and / or "upper" are only for the convenience of explanation and are not limited to one position or one spatial orientation. Words such as "include" or "comprise" mean that the elements or objects appearing in front of "include" or "comprise" include the elements or objects listed after "include" or "comprise" and their equivalents, and do not exclude other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, and can include electrical connections, whether direct or indirect.

[0044] The terms used in this specification are for the purpose of describing specific embodiments only and are not intended to limit this specification. The singular forms "a", "the" and "the" used in this specification and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0045] Next, the embodiments of the present application are described in detail.

[0046] like Figure 1 to Figure 2As shown, the present application provides a MacPherson air spring strut assembly, including a spring body 100 , a mounting assembly 200 , a damper rod assembly 300 and an additional air chamber assembly 400 .

[0047] The mounting assembly 200 is arranged at the upper part of the spring body 100, and the damper rod assembly 300 is arranged at the lower part of the spring body 100. The additional air chamber assembly 400 is arranged at the upper part of the mounting assembly 200 and is connected with the spring body 100 through the mounting assembly 200. The mounting assembly 200 and the spring body 100 and the additional air chamber assembly 400 are all sealed. The mounting assembly 200 is fixedly connected to the vehicle body, and the lower end of the damper rod assembly 300 is fixedly connected to the steering knuckle of the vehicle. A main air chamber 110 is formed in the spring body 100, and a secondary air chamber 410 is formed in the additional air chamber assembly 400. The secondary air chamber 410 can be selectively connected with the main air chamber 110.

[0048] The McPherson air spring strut assembly of the present application has a longitudinal axis 500. The central axes of the mounting assembly 200, the damper rod assembly 300 and the additional air chamber assembly 400 all coincide with the longitudinal axis 500. The central axis of the spring body 100 is arranged obliquely to the longitudinal axis 500.

[0049] Please also refer to Figure 2 , Figure 3 , Fig.11 and Fig.12 The spring body 100 includes an upper top seat 120, a lower end seat 130, a bladder skin 140 and a dust cover 150. The upper top seat 120 is arranged at the upper part of the spring body 100 and is fixedly connected to the mounting assembly 200. The lower end seat 130 is arranged at the lower part of the spring body 100 and is fixedly connected to the damper rod assembly 300. The upper end of the bladder skin 140 is sealed and connected to the upper top seat 120, and the lower end is sealed and connected to the lower end seat 130 to form a main air chamber 110. The dust cover 150 is located outside the bladder skin 140.

[0050] The upper seat 120 includes a seat body 121, an end plate 122, a first buckling portion 123, a first buckling ring 124 and a push ring 125. The seat body 121 is fixed to the mounting assembly 200, and a fourth sealing member 2131 is provided therebetween. The end plate 122 radially extends from the outer end of the seat body 121, and the outer side of the end plate 122 is sealed and connected to the dust cover 150.

[0051] The first buckling portion 123 extends longitudinally from the bottom of the support body 121. A serrated groove is provided on the outer side of the first buckling portion 123, and one end of the bladder skin 140 is overlapped and arranged outside the serrated groove. It can be understood that the "outside" of the present application refers to the side away from the longitudinal axis 500. The first buckling ring 124 is sleeved on the outside of the bladder skin 140, pressing one end of the bladder skin 140 to the outside of the first buckling portion 123, thereby achieving a sealed connection between the bladder skin 140 and the upper seat 120. The push ring 125 is provided at the bottom of the end plate 122, located on the outer side of the first buckling portion 123. After being inflated, the bladder skin 140 abuts against the push ring 125 and folds over.

[0052] The push ring 125 includes an inner ring and an outer ring. One end of the inner ring is connected to one end of the outer ring, so that the vertical cross-section of the push ring 125 forms a sharp corner, wherein the position of the sharp corner is inserted into a bend of the capsule skin 140, and the outer ring abuts against a part of the capsule skin 140 after the bend, and plays a supporting role for the capsule skin 140. The second bend of the capsule skin 140 is completed on the outer ring. According to the stress of the capsule skin 140, the external bend can be realized at any position on the outer ring. In order to avoid the sharp corner from damaging the capsule skin 140, the sharp corner is rounded.

[0053] The push ring 125 plays a role in supporting the bladder skin 140. Under the action of the push ring 125, the bladder skin 140 is bent into an S shape at the bend, so that it is easier and more convenient to offset the force of the bladder skin 140. The push ring 125 is fixedly connected to the upper top seat 120 by welding, interference fit, snap connection, etc.

[0054] The lower end seat 130 is provided with a second buckling portion 132 and a second buckling ring 133 on the upper part. A sawtooth groove is provided on the outer side of the second buckling portion 132, and the other end of the bladder skin 140 is overlapped and arranged outside the sawtooth groove. The second buckling ring 133 is sleeved with the bladder skin 140 to press the other end of the bladder skin 140 outside the second buckling portion 132, thereby achieving a sealed connection between the bladder skin 140 and the lower end seat 130.

[0055] The upper top seat 120 supports the bladder skin 140 and the dust cover 150 and transmits the force of the bladder skin 140; the bladder skin 140 rolls on the lower end seat 130, which changes the characteristics of the air spring during movement. The first buckle ring 124 and the second buckle ring 133 respectively seal between the bladder skin 140 and the upper top seat 120, and between the bladder skin 140 and the lower end seat 130. The lower end seat 130 is connected to the oil storage cylinder 320, which supports the main body of the air spring and changes the shape of the contact between the lower end seat 130 and the bladder skin 140, thereby changing the characteristics of the air spring.

[0056] The lower end seat 130 is arranged at an angle with respect to the damper rod assembly 300. Specifically, an eccentrically arranged receiving hole 131 is arranged on the lower end seat 130, and the central axis of the receiving hole 131 is offset from the central axis of the lower end seat 130, and the two are arranged at an angle. The receiving hole 131 is used to receive the damper rod assembly 300. After assembly, the central axis of the receiving hole 131 is located on the longitudinal axis 500, and the central axis of the lower end seat 130 is therefore also inclined relative to the longitudinal axis 500, thereby causing the lower part of the spring body 100 to be offset from the longitudinal axis 500. In addition, the lower end seat 130 and the damper rod assembly 300 are arranged at a certain angle, so that the central axis of the spring body 100 does not coincide with the central axis of the damper rod assembly 300 (i.e., the longitudinal axis 500). In this way, the McPherson air spring assembly can provide a certain lateral force to meet the lateral force requirement of the damper rod assembly 300 , provide protection for the damper rod assembly 300 , and avoid premature damage of the damper rod assembly 300 .

[0057] During the movement of the vehicle, the bladder skin 140 moves on the lower end seat 130 along the longitudinal axis 500 to achieve the bouncing of the vehicle. The bladder skin 140 is folded on both the upper and lower sides, which can improve the connection strength and connection stability between the bladder skin 140 and the upper top seat 120, increase the elasticity and deformation capacity of the spring body 100, and help improve the buffering effect, shock absorption capacity and anti-disturbance of the McPherson air spring strut assembly. At the same time, the stress and damage to the spring body 100 can be reduced, thereby extending the service life.

[0058] Specifically, in this embodiment, when the bladder skin 140 is subjected to a tensile force, the force between the bladder skin 140 and the upper top seat 120 can be reduced by reducing the bend. When the bladder skin 140 is subjected to an extrusion force, the force between the bladder skin 140 and the upper top seat 120 can be reduced by increasing the bend. In other words, whether it is an extrusion force or a tensile force, both are offset to a certain extent by the change of the bend, thereby avoiding the force acting on the connection between the bladder skin 140 and the upper top seat 120, thereby improving the connection strength and connection stability between the bladder skin 140 and the upper top seat 120.

[0059] The dust cover 150 is a bellows, one end of which is connected or clamped to the outer side of the end plate 122, and the other end of which is connected or clamped to the bottom of the lower end seat 130. The dust cover 150 can expand or contract with the up and down movement of the lower end seat 130, and can prevent impurities or foreign matter from entering the lower end seat 130, thereby avoiding damage to the bladder skin 140 caused by external wear.

[0060] Please also refer to Figure 4 and Figure 5The mounting assembly 200 is disposed on the upper part of the spring body 100, and the mounting assembly 200 includes a rotating assembly and a mounting plate 240 sleeved on the rotating assembly. The rotating assembly includes a lower mounting seat 210, a sealing cover 220, an upper mounting seat 230 and a mounting plate 240. The mounting plate 240 is fixedly connected to the vehicle body, and the spring body 100, the damper rod assembly 300 and the rotating assembly can rotate relative to the mounting plate 240.

[0061] The lower end of the lower mounting seat 210 is fixedly connected to the spring body 100, and the upper end is fixedly connected to the upper mounting seat 230. The sealing cover 220 is fixed to the lower mounting seat 210 through the upper mounting seat 230. The mounting plate 240 is sleeved on the outer side of the lower mounting seat 210 and connected to the vehicle body to fix the McPherson air spring strut assembly to the vehicle body. An upper bearing assembly 250 is arranged between the upper mounting seat 230 and the mounting plate 240, and a lower bearing assembly 260 is arranged between the mounting plate 240 and the lower mounting seat 210.

[0062] Please also refer to Figure 8 and Fig. 9 The lower mounting seat 210 includes a lower stopper 211 radially protruding outward and a main mounting ring 215. The lower stopper 211 is arranged on the outer wall of the middle part of the main mounting ring 215. The main mounting ring 215 includes an upper connecting portion 212 extending upward from the inner side of the lower stopper 211 and a lower connecting portion 213 extending downward from the inner side of the lower stopper 211. The upper end of the lower stopper 211 is slidably matched with the lower bearing assembly 260, and the lower end is fitted with the upper top seat 120. The upper connecting portion 212 is sleeved on the outer side of the sealing cover 220 and is further fixed to the sealing cover 220 by being fixed to the upper mounting seat 230. The lower connecting portion 213 is fixed to the spring body 100.

[0063] A fourth seal 2131 is provided between the lower mounting seat 210 and the upper top seat 120 to isolate the main air chamber 110 from the outside. Specifically, the lower connecting portion 213 is provided with an annular groove, and the fourth seal 2131 is placed in the annular groove. During assembly, the lower mounting seat 210 is inserted into the inner cavity of the upper top seat 120, and the fourth seal 2131 is located between the lower connecting portion 213 and the support body 121 to achieve sealing between the mounting assembly 200 and the spring body 100. At the same time, a limiting device is provided between the lower mounting seat 210 and the upper top seat 120 to prevent the two from rotating relative to each other. The fourth seal 2131 is basically a static seal.

[0064] A connecting cavity 221 is formed in the sealing cover 220, and the auxiliary air chamber 410 is connected to the main air chamber 110 through the connecting cavity 221. A gas channel is formed between the sealing cover 220 and the additional air chamber assembly 400. The first sealing member 2221 and the second sealing member 2231 are respectively located on both sides of the gas channel, ensuring the sealing of the auxiliary air chamber 410 and the connecting cavity 221.

[0065] The sealing cover 220 includes a first sealing portion 222, a second sealing portion 223 and a third sealing portion 224 extending sequentially from top to bottom. The first sealing portion 222 protrudes into the additional air chamber assembly 400, and includes a first step surface 2222 disposed laterally and a first sealing surface 2223 extending downward from the first step surface 2222. The first sealing surface 2223 is provided with an annular groove and is in contact with the inner wall 420, and the first sealing member 2221 is disposed in the annular groove between the first sealing surface 2223 and the inner wall 420.

[0066] The second sealing portion 223 is connected to the lower end of the first sealing portion 222, and includes a second step surface 2232 radially extending from the first sealing surface 2223 and a second sealing surface 2233 extending downward from the second step surface 2232. The gas channel passes through the second step surface 2232. The second sealing surface 2233 is provided with an annular groove and is in contact with the support wall 440 of the additional air chamber assembly 400, and the second sealing member 2231 is provided in the annular groove between the second sealing surface 2233 and the support wall 440.

[0067] The third sealing portion 224 extends from the lower end of the second sealing portion 223 into the lower mounting seat 210, and includes a third step surface 2242 radially extending from the second sealing surface 2233 and a third sealing surface 2243 extending downward from the third step surface 2242. The upper mounting seat 230 is crimped on the third sealing portion 224, and the third step surface 2242 is located below the crimping portion 231 of the upper mounting seat 230. Under the buckling action of the upper mounting seat 230, the sealing cover 220 and the lower mounting seat 210 are fixed. The third sealing surface 2243 is provided with an annular groove and fits with the upper connecting portion 212, and the third sealing member 2241 is provided in the annular groove between the third sealing surface 2243 and the upper connecting portion 212. The lower end of the third sealing portion 224 abuts against the top glue 330 to limit the deformation of the top glue 330. The third sealing member 2241 is basically a static seal.

[0068] In this embodiment, the first seal 2221, the second seal 2231 and the third seal 2241 are all arranged on one side of the sealing surface extending longitudinally of the sealing cover 220. Through the interference fit of the three seals with the sealing cover 220, the additional air chamber assembly 400 and the lower mounting seat 210 in the circumferential direction, on the one hand, the sealing of the sealing cover 220, the additional air chamber assembly 400 and the lower mounting seat 210 is achieved, ensuring that the air chamber inside the McPherson air spring strut assembly is isolated from the outside world, preventing liquid, gas or other substances from leaking or penetrating from the connection. On the other hand, the longitudinal relative displacement between the sealing cover 220 and the additional air chamber assembly 400, and the sealing cover 220 and the lower mounting seat 210 can be effectively prevented, thereby improving the connection effect and ensuring the stability and reliability of the connection between the three.

[0069] In some cases, the seal may also have other settings, such as: the first seal 2221 can be set between the connecting wall 450 of the additional air chamber assembly 400 and the first step surface 2222; the second seal 2231 can be set between the additional air chamber assembly 400 and the second step surface 2232; the third seal 2241 can be set between the third step surface 2242 and the crimping portion 231 of the upper mounting seat 230.

[0070] Please also refer to Figure 6 , Figure 7 and Fig.10 The upper mounting seat 230 covers the outer sides of the lower mounting seat 210 and the sealing cover 220 and is located above the mounting plate 240, fixing the sealing cover 220 on the lower mounting seat 210. The inner side of the upper mounting seat 230 and the outer side of the upper connecting portion 212 are provided with corresponding threads, and the upper mounting seat 230 is sleeved and fixed with the lower mounting seat 210 through the threads.

[0071] The upper mounting seat 230 includes a crimping portion 231, a connecting portion 232 and a plurality of reinforcing ribs 233. The crimping portion 231 and the connecting portion 232 are both annularly arranged. The crimping portion 231 is located above the lower mounting seat 210 and the sealing cover 220. The positioning top screw 2311 passes through the crimping portion 231 from top to bottom and is embedded in the upper connecting portion 212 to further fix the upper mounting seat 230 to the lower mounting seat 210. At the same time, the bottom of the crimping portion 231 abuts against the sealing cover 220 to press the sealing cover 220 tightly into the lower mounting seat 210.

[0072] The connecting portion 232 is arranged at the periphery of the crimping portion 231 and is slidably matched with the upper bearing assembly 250. The height of the connecting portion 232 is lower than the height of the crimping portion 231. The outer side of the connecting portion 232 is bent downward to form an outer stop 2321 to limit the upper bearing assembly 250. A plurality of reinforcing ribs 233 are arranged on the upper surface of the connecting portion 232 and extend radially, and are gradually inclined downward from the inside to the outside, so that the structural strength of the upper mounting seat 230 is improved.

[0073] One end of the connecting portion 232 is provided with an internal thread, and the outer stopper 2321 is provided at one side of the other end of the connecting portion 232. The upper end of the outer wall of the main mounting ring 215 is provided with an external thread matching the internal thread. The internal thread on the connecting portion 232 matches the external thread on the main mounting ring 215, so that the threaded connection between the connecting portion 232 and the main mounting ring 215 can be achieved, thereby achieving the threaded connection between the upper mounting seat 230 and the lower mounting seat 210.

[0074] By threading the upper mounting seat 230 and the lower mounting seat 210, when the upper bearing assembly 250 or the lower bearing assembly 260 in the mounting groove 270 wears the upper mounting seat 230 or the lower mounting seat 210, causing the gap in the mounting groove 270 to increase, the gap can be adjusted by adjusting the threaded connection position between the upper mounting seat 230 and the lower mounting seat 210, so that the mounting plate 240 will not vibrate in the mounting groove 270, thereby reducing the occurrence of abnormal noise.

[0075] Furthermore, the upper mounting seat 230 is provided with a plurality of through holes 234 , and the lower mounting seat 210 is provided with a plurality of positioning holes 214 . The positioning screws 2311 pass through the through holes 234 and are inserted into the positioning holes 214 for rotational positioning between the upper mounting seat 230 and the lower mounting seat 210 .

[0076] In this embodiment, the upper mounting seat 230 has a plurality of through holes 234, and the lower mounting seat 210 has a plurality of positioning holes 214. After the upper mounting seat 230 and the lower mounting seat 210 are rotated into place through threaded connection, the through holes 234 correspond to the positioning holes 214, and the positioning top screws 2311 pass through the through holes 234 and are inserted into the positioning holes 214, which limit the relative rotation between the upper mounting seat 230 and the lower mounting seat 210, thereby preventing the threaded connection between the upper mounting seat 230 and the lower mounting seat 210 from loosening.

[0077] In this embodiment, the through hole 234 may be a straight hole or a threaded hole, or an internal thread that matches the positioning screw 2311 may be provided in the positioning hole 214 .

[0078] In an optional embodiment, the circle formed by the centers of all the positioning holes 214 and the circle formed by the centers of all the through holes 234 are concentric circles and have the same radius; Figure 7 As shown, the centers of adjacent through holes 234 reach the angle α formed by the centers of the concentric circles, as shown in FIG. Fig. 9 As shown, the angle β formed by the center of the adjacent positioning hole 214 to the center of the concentric circle, the relationship between the angle α and the angle β is:

[0079] α≠β.

[0080] Since the upper mounting seat 230 and the lower mounting seat 210 are threadedly connected, after the upper bearing assembly 250 or the lower bearing assembly 260 is worn, the relative position between the upper mounting seat 230 and the lower mounting seat 210 needs to be adjusted to reduce the gap. Therefore, the fixed position between the upper mounting seat 230 and the lower mounting seat 210 after relative rotation is not fixed.

[0081] In order to ensure that the positioning screw 2311 can pass through the through hole 234 and be inserted into the positioning hole 214 to achieve the rotation limit between the upper mounting seat 230 and the lower mounting seat 210, in this embodiment, the angle α and the angle β are set to be different, such as Figure 7 and Fig. 9 As shown, such a setting makes it possible for any through hole 234 to correspond to any positioning hole 214 at any position after the upper mounting seat 230 and the lower mounting seat 210 rotate relative to each other. At this time, the positioning top screw 2311 can be inserted into the corresponding through hole 234 and positioning hole 214.

[0082] That is to say, as long as there is a through hole 234 corresponding to the positioning hole 214 and a positioning screw 2311 can be inserted, the rotational positioning between the upper mounting seat 230 and the lower mounting seat 210 can be achieved.

[0083] The mounting plate 240 is installed between the upper mounting seat 230 and the lower mounting seat 210 and is rotatably connected to the two. Specifically, a mounting groove 270 is formed outside between the upper mounting seat 230 and the lower mounting seat 210, and one end of the mounting plate 240 is arranged in the mounting groove 270. The mounting groove 270 includes a first annular groove 247 and a second annular groove 248. The main mounting ring 215, the lower stopper 211, the connecting portion 232 and the outer stopper 2321 together constitute the mounting groove 270, and the mounting plate 240 passes between the outer stopper 2321 and the lower stopper 211 and is inserted into the mounting groove 270.

[0084] An upper bearing assembly 250 is disposed between the upper mounting seat 230 and the mounting plate 240, and a first annular groove 247 for accommodating the upper bearing assembly 250 is formed between the mounting plate 240 and the connecting portion 232. A lower bearing assembly 260 is disposed between the mounting plate 240 and the lower mounting seat 210, and a second annular groove 248 for accommodating the lower bearing assembly 260 is formed between the mounting plate 240 and the lower stopper 211.

[0085] Specifically, the top height of the mounting plate 240 is lower than the top height of the lower mounting seat 210. The mounting plate 240 includes a clamping portion 241, a bending portion 242, a first limiting portion 243, a second limiting portion 244, and a protruding portion 245. The clamping portion 241 is located between the upper bearing assembly 250 and the lower bearing assembly 260. The first annular groove 247 is located above the clamping portion 241, and the second annular groove 248 is located below the clamping portion 241.

[0086] The bending portion 242 extends upward from the inner side of the clamping portion 241. The first limiting portion 243 extends upward from the outer side of the clamping portion 241. The first limiting portion 243 and the outer stop portion 2321 are arranged correspondingly, and the two together limit the upper bearing assembly 250. The connecting portion 232 is arranged opposite to the clamping portion 241. In this way, the clamping portion 241, the bending portion 242, the first limiting portion 243, the connecting portion 232 and the outer stop portion 2321 together form a first annular groove 247. The second limiting portion 244 extends downward from the outer side of the clamping portion 241. The lower stop portion 211 is arranged opposite to the clamping portion 241. In this way, the clamping portion 241, the second limiting portion 244 and the lower stop portion 211 together form a second annular groove 248.

[0087] The protrusion 245 is disposed on the periphery of the clamping portion 241 and is provided with a plurality of second fasteners 246 for connecting with the vehicle body. The protrusion 245 extends radially outward to form a plurality of lugs 2451. The second fasteners 246 are passed through the lugs 2451.

[0088] It is understandable that, in the extension direction of the longitudinal axis 500, the mounting plate 240 is located in the middle of the mounting assembly 200, and is pressed by the upper bearing assembly 250, the upper mounting seat 230 and other components above, and supported by the lower bearing assembly 260, the lower stop 211 and other components below. In this way, when the mounting plate 240 is connected to the vehicle body, it can better absorb and disperse external forces, so that the connection stability between the entire McPherson air spring and the vehicle body is improved, and the separation of the air spring and the vehicle body caused by excessive vehicle body movement intensity is avoided.

[0089] The upper bearing assembly 250 is disposed between the upper mounting seat 230 and the mounting plate 240 and transmits the axial force and the rotational force therebetween. The upper bearing assembly 250 includes a first race 251 fixed to the upper mounting seat 230, a second race 252 fixed to the mounting plate 240, and a first sliding ring 253 disposed between the first race 251 and the second race 252. Specifically, the first race 251 is relatively fixed to the connecting portion 232, and the second race 252 is relatively fixed to the clamping portion 241. The first race 251 and the second race 252 can rotate relative to each other around the longitudinal axis 500 through the first sliding ring 253. The upper mounting seat 230 and the mounting plate 240 can achieve relative rotation around the longitudinal axis 500 through the upper bearing assembly 250.

[0090] Furthermore, the upper bearing assembly 250 further includes a first buffer 254 disposed between the second seat ring 252 and the mounting plate 240. The first buffer 254 is fitted with the second seat ring 252 on one side close to the second seat ring 252. A protrusion is provided on the first buffer 254 on one side close to the mounting plate 240 to abut against the mounting plate 240. The first buffer 254 can be provided as an elastic structure to absorb noise or vibration from the upper mounting seat 230 and the mounting plate 240, improve NVH performance, and make the connection of the upper bearing assembly 250 more stable.

[0091] The lower bearing assembly 260 is disposed between the mounting plate 240 and the lower mounting seat 210 and transmits the axial force, radial force and rotational force therebetween. The lower bearing assembly 260 includes a third race 261 fixed to the mounting plate 240, a fourth race 262 fixed to the lower mounting seat 210, and a second sliding ring 263 disposed between the third race 261 and the fourth race 262. Specifically, the third race 261 is relatively fixed to the clamping portion 241, and the fourth race 262 is relatively fixed to the lower stopper 211. The third race 261 and the fourth race 262 can rotate relative to each other around the longitudinal axis 500 through the second sliding ring 263. The mounting plate 240 and the lower mounting seat 210 can achieve relative rotation around the longitudinal axis 500 through the lower bearing assembly 260.

[0092] When the McPherson air spring strut assembly is subjected to force, the force from the suspension is transmitted to the lower mounting seat 210 via the damper rod assembly 300 and the spring body 100. The lower stopper 211 receives force from the upper top seat 120 and abuts against the lower bearing assembly 260 upward. Therefore, the McPherson air spring strut assembly of the present application puts forward higher requirements on the rigidity, sliding smoothness and force transmission path of the lower bearing assembly 260. In this embodiment, the third seat ring 261 and the fourth seat ring 262 have an L-shaped cross-section in the longitudinal direction, a radially extending section is arranged between the lower stopper 211 and the clamping portion 241, a longitudinally extending section is arranged between the upper connecting portion 212 and the bending portion 242, and the second sliding ring 263 is arranged radially. In this way, the lower mounting seat 210 and the mounting plate 240 can transmit force in both the longitudinal and transverse directions, so that the relative rotation between the two is more stable.

[0093] Furthermore, the lower bearing assembly 260 further includes a second buffer 264 disposed between the mounting plate 240 and the third race 261, and the upper and lower sides of the second buffer 264 are respectively in contact with the mounting plate 240 and the third race 261. The second buffer 264 can be configured as an elastic structure to absorb noise or vibration from the mounting plate 240 and the lower mounting seat 210, improve NVH performance, and make the connection of the lower bearing assembly 260 more stable.

[0094] By providing the upper bearing assembly 250 and the lower bearing assembly 260, the mounting plate 240 can generate relative rotation relative to the upper mounting seat 230 and the lower mounting seat 210 around the longitudinal axis 500. Since the upper mounting seat 230, the lower mounting seat 210 and the sealing cover 220 are fixed, the mounting plate 240 and the sealing cover 220 can also generate relative rotation around the longitudinal axis 500. The upper bearing assembly 250 and the lower bearing assembly 260 are both plane bearings, which can effectively reduce the torsional force when the McPherson air spring assembly moves, and increase the rotation angle to ±45°, and can work stably in the first annular groove 247 and the second annular groove 248 without detaching outward. The upper bearing assembly 250 and the lower bearing assembly 260 are both pre-compressed, thereby generating a certain preload force.

[0095] The damper rod assembly 300 is disposed at the lower part of the spring body 100 and partially extends into the spring body 100 , and includes a piston rod 310 , an oil storage cylinder 320 , a top rubber 330 , a buffer block 340 and a damper sealing cover 350 .

[0096] The piston rod 310 and the oil storage cylinder 320 extend from the receiving hole 131 into the main air chamber 110. The top rubber 330 is pressed into the inner cavity of the lower mounting seat 210 by interference fit and fixed to the upper end of the piston rod 310 by the fourth fastener 311. The upper end of the piston rod 310 is fixed to the inside of the lower mounting seat 210 by the top rubber 330. During the driving process of the vehicle, the damper rod assembly 300 is swung by the deformation of the top rubber 330. The top of the top rubber 330 abuts against the sealing cover 220 through the abutment portion 225, which prevents the top rubber 330 from being excessively deformed.

[0097] The oil storage cylinder 320 is wrapped around the lower part of the piston rod 310 and connected to the lower end seat 130. The oil storage cylinder 320 at least partially defines a certain amount of damping fluid and a damping chamber. The lower part of the lower end seat 130 is provided with an annular groove, and the fifth seal 312 and the sealing gasket 313 are placed in the annular groove to achieve a sealed connection with the oil storage cylinder 320, so that the main air chamber 110 is isolated from the outside. The fifth seal 312 is basically a static seal. At the same time, a limiting device is provided between the lower end seat 130 and the oil storage cylinder 320 to limit the relative rotation of the two, so that the lower end seat 130 and the oil storage cylinder 320 are relatively fixed.

[0098] The buffer block 340 is pressed into the lower part of the lower mounting seat 210 by interference, so as to achieve buffering and position limiting during the vehicle bouncing process. The damper sealing cover 350 is pressed onto the oil storage cylinder 320 by interference.

[0099] The additional air chamber assembly 400 includes an inner wall 420, an outer wall 430, a support wall 440, a connecting wall 450, and a solenoid valve 460 located inside the additional air chamber assembly 400. A sealed auxiliary air chamber 410 is formed between the inner wall 420 and the outer wall 430. The support wall 440 is disposed at the lower end of the additional air chamber assembly 400 and protrudes out of the auxiliary air chamber 410. The connecting wall 450 is radially disposed to connect the annular inner wall 420. The inner side of the inner wall 420 encloses an accommodating space 421, which is located above the connecting wall 450, and the first step surface 2222 is located below the connecting wall 450.

[0100] The solenoid valve 460 is used to control the connection and disconnection of the main air chamber 110 and the auxiliary air chamber 410. When the main air chamber 110 and the auxiliary air chamber 410 are disconnected, the McPherson air spring strut assembly is a single-chamber setting, and only the main air chamber 110 is used to adjust the stiffness and buffer the vibration reduction effect of the air spring. When the main air chamber 110 is connected to the auxiliary air chamber 410, the McPherson air spring strut assembly is a double-chamber setting, and the main air chamber 110 and the auxiliary air chamber 410 work together to improve the vibration reduction effect through a larger air chamber space. By setting the additional air chamber assembly 400, the double-chamber setting of the McPherson air spring strut assembly is realized, and the two-stage variable stiffness of the air spring is further realized, which improves the flexibility and comfort of the McPherson air spring strut assembly.

[0101] The shape of the additional air chamber assembly 400 is not restricted and can be flexibly designed according to actual needs. In this embodiment, the walls of the additional air chamber assembly 400 and the cavity formed therein are arranged symmetrically along the circumferential direction of the longitudinal axis 500. The inner wall 420 and the outer wall 430 are both cylindrical and coaxially arranged, and the accommodating space 421 is a columnar space. By providing a circumferentially symmetrical additional air chamber assembly 400, it is possible to achieve a balance in air pressure and a balance in load distribution, so that the force of the McPherson air spring strut assembly is more balanced, further improving comfort and stability, and avoiding deformation or imbalance caused by uneven load distribution. The additional air chamber assembly 400 is made of plastic as a whole, which reduces the weight of the entire vehicle without affecting the performance of the McPherson air spring strut assembly.

[0102] The additional air chamber assembly 400 is fixed to the sealing cover 220. The sealing cover 220 and the additional air chamber assembly 400 can be fixed by snapping or by fasteners. In this embodiment, the sealing cover 220 and the additional air chamber assembly 400 are fixed by mounting bolts 2224. The mounting bolts 2224 pass through the connecting wall 450 and the first step surface 2222 from top to bottom and are embedded in the first sealing portion 222 to fix the additional air chamber assembly 400 to the sealing cover 220.

[0103] A plurality of first vent holes 470 are provided on one side of the auxiliary air chamber 410 close to the sealing cover 220. A plurality of second vent holes 2234 are provided on one side of the connecting cavity 221 close to the additional air chamber assembly 400, and the second vent holes 2234 are connected to the first vent holes 470. The first vent holes 470 and the second vent holes 2234 are evenly distributed around the circumference of the longitudinal axis 500.

[0104] Furthermore, a sealed annular transition cavity 480 is formed between the sealing cover 220 and the additional air chamber assembly 400, and the transition cavity 480 is respectively connected to the first vent hole 470 and the second vent hole 2234. The transition cavity 480 provides a buffer space for gas exchange between the first vent hole 470 and the second vent hole 2234. In the actual assembly process, the first vent hole 470 and the second vent hole 2234 do not need to be precisely aligned to achieve efficient gas flow, which expands the design space and improves assembly efficiency.

[0105] Specifically, the outer end of the second step surface 2232 protrudes upward to form a stopper 2235. The stopper 2235 abuts against the additional air chamber assembly 400, so that a gap is generated in the longitudinal direction between the second step surface 2232 and the additional air chamber assembly 400. The second step surface 2232, the stopper 2235, the first sealing surface 2223 and the additional air chamber assembly 400 together form a transfer cavity 480.

[0106] The gas channel of this embodiment is formed by the first vent hole 470, the second vent hole 2234 and the transfer cavity 480. It can be understood that this embodiment only provides one arrangement of the gas channel. In other cases, those skilled in the art can provide other designs for the specific structure of the gas channel according to actual needs, as long as the communication between the main gas chamber 110 and the auxiliary gas chamber 410 can be achieved.

[0107] The bottom of the additional air chamber assembly 400 is arranged close to the top of the upper mounting seat 230, making the overall structure of the McPherson air spring strut assembly more compact, saving space, reducing costs, while improving the response speed and energy transfer efficiency of the air spring, making the stiffness adjustment of the air spring more flexible and efficient, and having higher stability.

[0108] Compared with the first embodiment, the McPherson air spring strut assembly of the second embodiment is only differently designed in the structure of the sealing cover 220', and the additional air chamber assembly 400 is omitted. Therefore, only the sealing cover 220' is described here, and other parts are not repeated.

[0109] like Fig.13 , Fig.14 and Fig.15As shown, the sealing cover 220 ′ is located in the lower mounting seat 210 and cooperates with the upper mounting seat 230 to seal the upper end of the MacPherson air spring strut assembly. A connecting cavity 221 ′ is formed in the sealing cover 220 ′, and the connecting cavity 221 ′ is connected to the main air chamber 110 .

[0110] A third sealing member 2241' is provided between the sealing cover 220' and the lower mounting seat 210. Specifically, in the present embodiment, the sealing cover 220' comprises a third step surface 2242' arranged transversely and a third sealing surface 2243' extending downwardly from the third step surface 2242'. The height of the third step surface 2242' is not higher than the height of the top end of the lower mounting seat 210. With such an arrangement, the upper mounting seat 230 can also be simultaneously pressed against the third step surface 2242' when being fixed to the lower mounting seat 210, so as to limit the sealing cover 220' and crimp the sealing cover 220' onto the lower mounting seat 210. The third sealing surface 2243' is in contact with the upper connecting portion 212, and the third sealing member 2241' is provided between the third sealing surface 2243' and the upper connecting portion 212. The third sealing member 2241' is basically a static seal.

[0111] Furthermore, a longitudinally extending abutment portion 225' is provided at the bottom of the sealing cover 220', and the abutment portion 225' abuts against the damper rod assembly 300 to limit the longitudinal movement of the damper rod assembly 300. A limiter (not shown in the figure) is provided between the lower mounting seat 210 and the sealing cover 220', and the limiter is used to limit the relative rotation between the lower mounting seat 210 and the sealing cover 220'.

[0112] The present application also provides a vehicle, comprising the McPherson air spring strut assembly as described above.

[0113] The McPherson air spring strut assembly and vehicle of the present application are provided with an additional air chamber assembly 400. The auxiliary air chamber 410 in the additional air chamber assembly 400 can be connected with the main air chamber 110 in the spring body 100, so that the overall air chamber volume of the McPherson air spring can be changed, and the stiffness of the McPherson air spring strut assembly can be adjusted, thereby improving the stability and comfort of the McPherson air spring strut assembly in different application scenarios.

[0114] At the same time, by arranging the mounting assembly 200 on the upper part of the spring body 100 and the additional air chamber assembly 400 on the upper part of the mounting assembly 200, the additional air chamber assembly 400 will not affect the connection, sealing and movement relationship between the spring body 100 and the mounting assembly 200, and the overall structure of the McPherson air spring strut assembly is more compact and smooth. During the assembly process, it is only necessary to seal and connect the additional air chamber assembly 400 and the sealing cover 220, which greatly simplifies the assembly process of the additional air chamber assembly 400 and improves manufacturing efficiency.

[0115] Taking the first embodiment as an example, the McPherson air spring strut assembly of the present application includes the first seal 2221, the second seal 2231, the third seal 2241, the fourth seal 2131 and the fifth seal 312 from top to bottom, realizing the sealing of the additional air chamber assembly 400 and the mounting assembly 200, the sealing cover 220' in the mounting assembly 200 and the lower mounting seat 210, the mounting assembly 200 and the spring body 100, and the spring body 100 and the damper rod assembly 300, effectively isolating the main air chamber 110 and the auxiliary air chamber 410 from the outside. The five seals are all O-rings with strong sealing performance and are all static seals, which improve the sealing reliability while increasing the service life of the seals and reducing the use requirements of the seals.

[0116] In addition, the McPherson air spring strut assembly and the vehicle of the present application are provided with a mounting assembly 200 connecting the spring body 100 and the damper rod assembly 300, and an upper bearing assembly 250 and a lower bearing assembly 260 are respectively provided on the upper and lower sides of the mounting plate 240, so that the relative rotation of the mounting plate 240 and the upper mounting seat 230 and the lower mounting seat 210 is realized, so that the McPherson air spring strut assembly can rotate relative to the vehicle body when the vehicle turns. The relative rotation structure of the McPherson air spring strut assembly of the present application is simple and the connection is reliable. At the same time, since the mounting plate 240 is not directly connected to the main air chamber 110 in the spring body 100, there is no need to consider the air tightness problem when the mounting plate 240 rotates, which effectively reduces the difficulty of design and manufacturing.

[0117] The above is only a preferred implementation mode of the present application, and does not constitute any form of limitation to the present application. Although the present application has been disclosed as a preferred implementation mode as above, it is not used to limit the present application. Any technician familiar with this profession can make some changes or modify the technical contents disclosed above into equivalent implementation modes without departing from the scope of the technical solution of the present application. However, any simple modification, equivalent change and modification made to the above implementation modes based on the technical essence of the present application without departing from the content of the technical solution of the present application still fall within the scope of the technical solution of the present application.

Claims

1. A vehicle, characterized in that: The invention comprises a McPherson air spring strut assembly, wherein the McPherson air spring strut assembly comprises a spring body, a mounting assembly and a damper rod assembly, wherein the damper rod assembly is arranged at the lower part of the spring body, and the mounting assembly is arranged at the upper part of the spring body; the mounting assembly comprises a lower mounting seat, an upper mounting seat and a mounting plate rotatably connected to the lower mounting seat and the upper mounting seat; an upper bearing assembly is arranged between the upper mounting seat and the mounting plate, and a lower bearing assembly is arranged between the mounting plate and the lower mounting seat; the lower end of the lower mounting seat is connected to the spring body, and the upper end is connected to the upper mounting seat; the mounting plate is sleeved on the outer side of the lower mounting seat and connected to the vehicle body to fix the McPherson air spring strut assembly on the vehicle body.

2. The vehicle according to claim 1, characterized in that The McPherson air spring strut assembly has a longitudinal axis, and the central axis of the spring body is arranged obliquely to the longitudinal axis.

3. The vehicle according to claim 2, characterized in that The central axes of the mounting assembly and the damper rod assembly are both coincident with the longitudinal axis.

4. The vehicle according to claim 1, characterized in that The mounting assembly comprises a sealing cover, the upper end of the lower mounting seat is fixed to the sealing cover, and the upper mounting seat covers the outer sides of the lower mounting seat and the sealing cover.

5. The vehicle according to claim 4, characterized in that The lower mounting seat comprises a lower stop portion radially protruding outward and a mounting main ring. The lower stop portion is arranged on the outer wall of the middle portion of the mounting main ring. The upper end of the lower stop portion is slidably matched with the lower bearing assembly.

6. The vehicle according to claim 5, characterized in that The main mounting ring includes an upper connecting portion extending upward from the inner side of the lower stop portion and a lower connecting portion extending downward from the inner side of the lower stop portion. The upper connecting portion is sleeved on the outer side of the sealing cover and fixed to the upper mounting seat, and the lower connecting portion is fixed to the spring body.

7. The vehicle according to claim 1, characterized in that The mounting plate comprises a clamping portion located between the upper bearing assembly and the lower bearing assembly and a protruding portion arranged at the periphery of the clamping portion, wherein a second fastener is arranged on the protruding portion.

8. The vehicle according to claim 1, characterized in that The damper rod assembly is arranged at the lower part of the spring body and partially extends into the spring body. The damper rod assembly includes a piston rod and a top glue. The top glue is interference pressed into the inner cavity of the lower mounting seat, and the upper end of the piston rod is fixed to the inside of the lower mounting seat through the top glue.

9. The vehicle according to claim 1, characterized in that The upper mounting seat includes a crimping portion, a connecting portion and a plurality of reinforcing ribs, wherein the crimping portion is located above the lower mounting seat, the connecting portion is arranged at the periphery of the crimping portion, and the reinforcing ribs are arranged on the upper surface of the connecting portion and are gradually inclined downward from the inside to the outside.

10. The vehicle according to claim 1, characterized in that A lower end seat is provided at the lower part of the spring body, and the lower end seat is connected to the damper rod assembly; a receiving hole for receiving the damper rod assembly is provided on the lower end seat, and the receiving hole is eccentrically arranged.

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