Mounting assembly, Macpherson air spring strut assembly and vehicle

Abstract

The utility model provides a mounting assembly, a Macpherson air spring strut assembly and a vehicle. The mounting assembly comprises a lower mounting seat, an upper mounting seat and a mounting plate. And the lower mounting seat is used for being fixed with a spring body. And the upper mounting seat is fixed with the lower mounting seat. And the mounting plate is arranged on the outer side of the lower mounting seat in a sleeving manner. And 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 mounting assembly, the Macpherson air spring strut assembly and the vehicle are simple in structure and high in stability.

Description

Technical Field

[0001] The present application relates to the technical field of vehicles, and particularly to a mounting assembly, a MacPherson air spring strut assembly and a vehicle. Background Art

[0002] With the substantial increase in people's demand for vehicles, the requirements for vehicle comfort and handling are also getting higher and higher, and MacPherson air springs have been widely used in the technical field of vehicles.

[0003] A MacPherson air spring utilizes the high air pressure, compressibility, and air charging and discharging properties of sealed air to achieve static load bearing and dynamic rebound functions, has the functions of buffering shock and reducing vibration, realizes the consistency of the natural frequency of the vehicle body, and improves riding comfort. At the same time, a MacPherson air spring also needs to undertake the steering function during vehicle driving: relative rotation occurs with vehicle body components when the vehicle steers. Therefore, the rotational connection mode between the MacPherson air spring and the vehicle body has become a difficult point in this technical field.

[0004] Therefore, it is necessary to provide an improved mounting assembly, a MacPherson air spring strut assembly and a vehicle to solve the above problems. Utility Model Content

[0005] The present application provides a mounting assembly, a MacPherson air spring strut assembly and a vehicle with a simple structure and strong stability.

[0006] The present application discloses a mounting assembly, including a lower mounting seat, an upper mounting seat and a mounting plate. The lower mounting seat is used to be fixed to the spring body, the upper mounting seat is fixed to the lower mounting seat, and the mounting plate is sleeved outside the lower 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.

[0007] Further, the mounting plate includes a clamping portion located between the upper bearing assembly and the lower bearing assembly. A first annular groove is formed above the clamping portion to accommodate the upper bearing assembly, and a second annular groove is formed below the clamping portion to accommodate the lower bearing assembly.

[0008] Further, the mounting plate further includes a bent portion extending upward from the inner side of the clamping portion and a first limiting portion extending upward from the outer side of the clamping portion; the clamping portion, the bent portion, the first limiting portion and the upper mounting seat together form the first annular groove.

[0009] Further, the mounting plate further includes a second limiting portion extending downward from the outer side of the clamping portion; the lower mounting seat includes a lower blocking portion protruding radially outward, and the clamping portion, the second limiting portion and the lower blocking portion together form the second annular groove.

[0010] Further, the mounting plate includes a protruding portion disposed around the clamping portion, and a plurality of second fasteners are provided on the protruding portion.

[0011] Further, the upper bearing assembly includes a first seat ring fixed to the upper mounting seat, a second seat ring fixed to the mounting plate, and a first sliding ring disposed between the first seat ring and the second seat ring; the lower bearing assembly includes a third seat ring fixed to the mounting plate, a fourth seat ring fixed to the lower mounting seat, and a second sliding ring disposed between the third seat ring and the fourth seat ring.

[0012] Further, the mounting assembly further includes a sealing cover cooperating with the lower mounting seat. The upper mounting seat includes an annular crimping portion and a connecting portion. The crimping portion is located above the lower mounting seat and the sealing cover, and the connecting portion is disposed opposite to the clamping portion.

[0013] Further, the outer side of the connecting portion is bent downward to form an outer blocking portion, and a first limiting portion corresponding to the outer blocking portion is provided on the mounting plate. The outer blocking portion and the first limiting portion jointly limit the upper bearing assembly.

[0014] The present application also discloses a MacPherson air spring strut assembly, including a spring body, a damper rod assembly, and the mounting assembly as described above. The mounting assembly is disposed at the upper part of the spring body, and the damper rod assembly is disposed at the lower part of the spring body.

[0015] Further, the spring body includes a lower end seat, and the lower end seat is connected to the damper rod assembly; an eccentric receiving hole is provided on the lower end seat, and the spring body and the damper rod assembly are inclined.

[0016] Further, an additional air chamber assembly is further included. The additional air chamber assembly is fixed to the upper part of the mounting assembly and is connected to the spring body through the mounting assembly.

[0017] Further, the mounting assembly further includes a sealing cover fixed to the additional air chamber assembly, and a gas passage is formed between the sealing cover and the additional air chamber assembly.

[0018] Further, a first seal and a second seal are provided between the sealing cover and the additional air chamber assembly, and the first seal and the second seal are respectively located on both sides of the gas passage.

[0019] Further, a secondary air chamber is formed within the additional air chamber assembly, and a communication chamber communicating with the spring body is formed within the sealing cover; several first ventilation holes are provided on one side of the secondary air chamber close to the sealing cover, and several second ventilation holes are provided on one side of the communication chamber close to the additional air chamber assembly, and the second ventilation holes communicate with the first ventilation holes.

[0020] The present application also discloses a vehicle, including the MacPherson air spring strut assembly as described above.

[0021] By providing the installation assembly connecting the spring body and the damper rod assembly, and respectively arranging the upper bearing assembly and the lower bearing assembly on the upper and lower sides of the mounting plate, the relative rotation between the mounting plate and the upper mounting seat and the lower mounting seat is realized, so that the MacPherson air spring strut assembly can rotate relative to the vehicle body when the vehicle turns. The relative rotation structure of the MacPherson air spring strut assembly of the present application is simple and the connection is reliable. At the same time, since the mounting plate is not connected to the main air chamber within the spring body, there is no need to consider the airtightness problem during the rotation of the mounting plate, effectively reducing the design and manufacturing difficulty.

[0022] 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

[0023] The drawings here are incorporated into the specification and form a part of this specification, showing embodiments consistent with this specification, and are used together with the specification to explain the principles of this specification.

[0024] Figure 1 is a perspective view of the first embodiment of the MacPherson air spring strut assembly of the present application.

[0025] Figure 2 is Figure 1 a cross-sectional view of the MacPherson air spring strut assembly in

[0026] Figure 3 is Figure 2 a partial enlarged view of part A in

[0027] Figure 4 is Figure 2 a partial enlarged view of the upper part of the MacPherson air spring strut assembly in

[0028] Figure 5 is Figure 2 a partial enlarged view of the additional air chamber assembly and the installation assembly in

[0029] Figure 6 is a cross-sectional view of the upper mounting seat of the installation assembly of the present application.

[0030] Figure 7 It is a top view of the upper mounting seat of the mounting component of the present application.

[0031] Figure 8 It is a sectional view of the lower mounting seat of the mounting component of the present application.

[0032] Figure 9 It is a top view of the lower mounting seat of the mounting component of the present application.

[0033] Figure 10 It is an assembly schematic diagram of the upper mounting seat and the lower mounting seat of the mounting component of the present application.

[0034] Figure 11 It is Figure 2 A partial enlarged view at position B in

[0035] Figure 12 It is Figure 2 A partial enlarged view at position C in

[0036] Figure 13 It is a three-dimensional view of the second embodiment of the MacPherson air spring strut assembly of the present application.

[0037] Figure 14 It is Figure 13 A sectional view of the MacPherson air spring strut assembly in

[0038] Figure 15 It is Figure 14 A partial enlarged view of

[0039] Explanation of the reference numerals in the drawings:

[0040] 100, spring body; 110, main air chamber; 120, upper top seat; 121, support body; 122, end plate; 123, first clamping part; 124, first clamping ring; 125, push ring; 130, lower end seat; 131, receiving hole; 132, second clamping part; 133, second clamping ring; 140, bladder; 150, dust cover;

[0041] 200. Mounting assembly; 210. Lower mounting base; 211. Lower blocking part; 212. Upper connecting part; 213. Lower connecting part; 2131. Fourth seal; 214. Positioning hole; 215. Mounting main ring; 220. Sealing cover; 220'. Sealing cover; 221. Communication cavity; 221'. Communication cavity; 222. First sealing part; 2221. First seal; 2222. First step surface; 2223. First sealing surface; 2224. Mounting bolt; 223. Second sealing part; 2231. Second seal; 2232. Second step surface; 2233. Second sealing surface; 2234. Second vent hole; 2235. Limit block; 224. Third sealing part; 2241. Third seal; 2241'. Third seal; 2242. Third step surface; 2242'. Third step surface; 2243. Third sealing surface; 2243'. Third sealing surface; 225. Contact part; 225'. Contact part; 230. Upper mounting base; 231. Crimping part; 2311. Positioning set screw; 232. Connecting part; 2321. Outer blocking part; 233. Reinforcing rib; 234. Through hole; 240. Mounting plate; 241. Clamping part; 242. Bending part; 243. First limiting part; 244. Second limiting part; 245. Protruding part; 2451. Lug; 246. Second fastener; 247. First annular groove; 248. Second annular groove; 250. Upper bearing assembly; 251. First raceway ring; 252. Second raceway ring; 253. First sliding ring; 254. First buffer; 260. Lower bearing assembly; 261. Third raceway ring; 262. Fourth raceway ring; 263. Second sliding ring; 264. Second buffer; 270. Mounting groove;

[0042] 300. Damper rod assembly; 310. Piston rod; 311. Fourth fastener; 312. Fifth seal; 313. Sealing gasket; 320. Oil storage cylinder; 330. Top rubber; 340. Buffer block; 350. Damper sealing cover;

[0043] 400. Additional air chamber assembly; 410. Auxiliary air chamber; 420. Inner wall; 421. Accommodation space; 430. Outer wall; 440. Support wall; 450. Connection wall; 460. Solenoid valve; 470. First vent hole; 480. Adapter cavity.

[0044] 500. Longitudinal axis. Detailed implementation manners

[0045] Exemplary embodiments will be described in detail herein, and examples thereof are shown in the accompanying drawings. When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this specification. On the contrary, they are merely examples of devices and methods consistent with some aspects of this specification as detailed in the appended claims.

[0046] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit this specification. Unless otherwise defined, the technical terms or scientific terms used in this specification should have the ordinary meaning as understood by those of ordinary skill in the art to which this application pertains. The terms "first", "second", and similar terms used in this specification and the appended claims do not denote any order, quantity, or importance, but are only used to distinguish different components. Similarly, terms such as "a" or "an" do not denote a quantity limitation, but rather denote the presence of one. "Plurality" or "several" means two or more. Unless otherwise specified, terms such as "front", "rear", "lower", and / or "upper" are for ease of description only and are not limited to one position or a spatial orientation. The terms "comprising" or "including" and similar terms mean that the elements or items appearing before "comprising" or "including" cover the elements or items listed after "comprising" or "including" and their equivalents, and do not exclude other elements or items. The terms "connected" or "coupled" and similar terms are not limited to physical or mechanical connections, and may include electrical connections, whether direct or indirect.

[0047] 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 "said" used in this specification and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

[0048] Next, the embodiments of this application will be described in detail.

[0049] As Figures 1 to 2 shown, this 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.

[0050] The mounting assembly 200 is disposed on the upper part of the spring body 100, and the damper rod assembly 300 is disposed on the lower part of the spring body 100. The additional air chamber assembly 400 is disposed on the upper part of the mounting assembly 200 and is connected to the spring body 100 through the mounting assembly 200. The mounting assembly 200 is hermetically connected to both the spring body 100 and the additional air chamber assembly 400. 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 inside the spring body 100, and a sub-air chamber 410 is formed inside the additional air chamber assembly 400. The sub-air chamber 410 can be selectively communicated with the main air chamber 110.

[0051] The MacPherson 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 inclined with respect to the longitudinal axis 500.

[0052] Please refer to Figure 2 、 Figure 3 、 Figure 11 and Figure 12 together. The spring body 100 includes an upper mount 120, a lower end seat 130, a bladder 140, and a dust cover 150. The upper mount 120 is disposed on the upper part of the spring body 100 and is fixedly connected to the mounting assembly 200. The lower end seat 130 is disposed on the lower part of the spring body 100 and is fixedly connected to the damper rod assembly 300. The upper end of the bladder 140 is hermetically connected to the upper mount 120, and the lower end is hermetically connected to the lower end seat 130, forming the main air chamber 110. The dust cover 150 is located outside the bladder 140.

[0053] The upper mount 120 includes a support body 121, an end plate 122, a first crimping portion 123, a first crimping ring 124, and a push ring 125. The support body 121 is fixed to the mounting assembly 200, and a fourth seal 2131 is provided between them. The end plate 122 extends radially from the outer end of the support body 121, and the outer side of the end plate 122 is hermetically connected to the dust cover 150.

[0054] The first crimping portion 123 extends longitudinally from the bottom of the support body 121. A serrated groove is provided on the outer side of the first crimping portion 123, and one end of the bladder 140 is overlapped outside the serrated groove. It can be understood that the "outer side" in the present application refers to the side away from the longitudinal axis 500. The first crimping ring 124 is sleeved outside the bladder 140 to press one end of the bladder 140 against the outside of the first crimping portion 123, realizing the sealed connection between the bladder 140 and the upper mount 120. The push ring 125 is disposed at the bottom of the end plate 122 and is located outside the first crimping portion 123. After the bladder 140 is inflated, it abuts against the push ring 125 and folds.

[0055] 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, such that the vertical cross-sectional shape of the push ring 125 forms a sharp angle. Among them, the position of the sharp angle is inserted into a bent portion of the bladder 140. The outer ring abuts against a part of the bladder 140 after bending, playing a supporting role for the bladder 140. The second bend of the bladder 140 is completed on the outer ring. According to the force-bearing situation of the bladder 140, its bending position can be achieved at any position on the outer ring. To avoid damage to the bladder 140 caused by the sharp angle, the sharp angle is rounded off.

[0056] The push ring 125 plays a role in supporting the bladder 140. Under the action of the push ring 125, the bend of the bladder 140 at the bent portion forms an S shape, enabling it to more easily and conveniently counteract the force on the bladder 140. The push ring 125 is fixedly connected to the upper top seat 120 by means of welding, interference fit, snap connection, etc.

[0057] On the upper part of the lower end seat 130, there are provided a second crimping portion 132 and a second crimping ring 133. On the outside of the second crimping portion 132, there are provided serrated grooves. The other end of the bladder 140 is overlapped and arranged outside the serrated grooves. The second crimping ring 133 is sleeved on the bladder 140 to press the other end of the bladder 140 outside the second crimping portion 132, achieving the sealed connection between the bladder 140 and the lower end seat 130.

[0058] The upper top seat 120 plays a role in supporting the bladder 140 and the dust cover 150 and transmitting the force of the bladder 140; the bladder 140 rolls on the lower end seat 130, playing a role in changing the characteristics of the air spring during the movement process. The first crimping ring 124 and the second crimping ring 133 respectively play a sealing role between the bladder 140 and the upper top seat 120, and between the bladder 140 and the lower end seat 130. The lower end seat 130 is connected to the oil storage cylinder 320, playing a supporting role for the air spring main body, and changing the characteristics of the air spring by changing the shape of the contact between the lower end seat 130 and the bladder 140.

[0059] The lower end seat 130 is inclined with respect to the damper rod assembly 300. Specifically, an eccentrically arranged receiving hole 131 is provided 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 inclined with respect to each other. The receiving hole 131 is used to receive the damper rod assembly 300. After assembly, the central axis of the receiving hole 131 lies on the longitudinal axis 500, and thus the central axis of the lower end seat 130 is also inclined with respect to the longitudinal axis 500, further causing the lower part of the spring body 100 to be offset from the longitudinal axis 500. Moreover, the lower end seat 130 and the damper rod assembly 300 are at a certain inclination angle, such 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 MacPherson air spring assembly can provide a certain lateral force to meet the requirement of the damper rod assembly 300 for lateral force, providing protection for the damper rod assembly 300 and preventing premature damage to the damper rod assembly 300.

[0060] During vehicle movement, the bladder 140 moves on the lower end seat 130 along the longitudinal axis 500 to achieve vehicle bounce. Folds are generated on both the upper and lower sides of the bladder 140, which can improve the connection strength and connection stability between the bladder 140 and the upper end seat 120, increase the elasticity and deformation ability of the spring body 100, and contribute to improving the buffering effect, shock absorption ability, and anti-disturbance performance of the MacPherson air spring strut assembly. At the same time, the stress and damage suffered by the spring body 100 can be reduced, thereby extending the service life.

[0061] Specifically, in this embodiment, when the bladder 140 is subjected to a tensile force, it can reduce the bending to lower the acting force between the bladder 140 and the upper end seat 120. When the bladder 140 is subjected to a compressive force, it can increase the bending to lower the acting force between the bladder 140 and the upper end seat 120. That is to say, whether it is a compressive force or a tensile force, a certain degree of cancellation is achieved through the change in bending, thereby preventing the acting force from being applied to the connection between the bladder 140 and the upper end seat 120, and thus improving the connection strength and connection stability between the bladder 140 and the upper end seat 120.

[0062] The dust cover 150 is a corrugated pipe, one end of which is connected or clamped to the outside of the end plate 122, and one end of which is connected or clamped to the bottom of the lower end seat 130. The dust cover 150 can expand or contract along with the up and down movement of the lower end seat 130, and can prevent impurities or foreign objects from entering the lower end seat 130, avoiding damage to the bladder 140 caused by external wear.

[0063] Please also refer to Figure 4 and Figure 5, The mounting assembly 200 is disposed on the upper part of the spring body 100. 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.

[0064] 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 on the lower mounting seat 210 through the upper mounting seat 230. The mounting plate 240 is sleeved on the outside of the lower mounting seat 210 and is connected to the vehicle body to fix the MacPherson air spring strut assembly to the vehicle body. An upper bearing assembly 250 is provided between the upper mounting seat 230 and the mounting plate 240, and a lower bearing assembly 260 is provided between the mounting plate 240 and the lower mounting seat 210.

[0065] Please refer to Figure 8 and Figure 9 , The lower mounting seat 210 includes a lower blocking portion 211 and a mounting main ring 215 that radially protrude outward. The lower blocking portion 211 is disposed on the outer wall of the middle part of the mounting main ring 215. The mounting main ring 215 includes an upper connecting portion 212 extending upward from the inner side of the lower blocking portion 211 and a lower connecting portion 213 extending downward from the inner side of the lower blocking portion 211. The upper end of the lower blocking portion 211 is in sliding fit with the lower bearing assembly 260, and the lower end is in contact with the upper top seat 120. The upper connecting portion 212 is sleeved on the outside 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.

[0066] 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 the sealing of 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 relative rotation between the two. The fourth seal 2131 is basically a static seal.

[0067] A communication cavity 221 is formed inside the sealing cover 220. The auxiliary air chamber 410 is communicated with the main air chamber 110 through the communication cavity 221. A gas passage is formed between the sealing cover 220 and the additional air chamber assembly 400. The first seal 2221 and the second seal 2231 are respectively located on both sides of the gas passage to ensure the sealing between the auxiliary air chamber 410 and the communication cavity 221.

[0068] The sealing cover 220 includes a first sealing portion 222, a second sealing portion 223, and a third sealing portion 224 that extend sequentially from top to bottom. The first sealing portion 222 protrudes into the additional air chamber assembly 400 and includes a first stepped surface 2222 disposed horizontally and a first sealing surface 2223 extending downward from the first stepped surface 2222. The first sealing surface 2223 is provided with an annular groove and fits against the inner wall 420, and the first seal 2221 is disposed in the annular groove between the first sealing surface 2223 and the inner wall 420.

[0069] The second sealing portion 223 is connected to the lower end of the first sealing portion 222 and includes a second stepped surface 2232 extending radially from the first sealing surface 2223 and a second sealing surface 2233 extending downward from the second stepped surface 2232. The gas passage passes through the second stepped surface 2232. The second sealing surface 2233 is provided with an annular groove and fits against the support wall 440 of the additional air chamber assembly 400, and the second seal 2231 is disposed in the annular groove between the second sealing surface 2233 and the support wall 440.

[0070] 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 stepped surface 2242 extending radially from the second sealing surface 2233 and a third sealing surface 2243 extending downward from the third stepped surface 2242. The upper mounting seat 230 is crimped onto the third sealing portion 224, and the third stepped surface 2242 is located below the crimping portion 231 of the upper mounting seat 230. Under the crimping action of the upper mounting seat 230, the sealing cover 220 is fixed to the lower mounting seat 210. The third sealing surface 2243 is provided with an annular groove and fits against the upper connecting portion 212, and the third seal 2241 is disposed 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 rubber 330 to limit the deformation of the top rubber 330. The third seal 2241 is substantially a static seal.

[0071] In this embodiment, the first seal 2221, the second seal 2231, and the third seal 2241 are all disposed on one side of the sealing surface extending longitudinally of the sealing cover 220. Through the interference fit in the circumferential direction of the three seals with the sealing cover 220, the additional air chamber assembly 400, and the lower mounting seat 210 respectively, on the one hand, the sealing between 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 MacPherson air spring strut assembly is isolated from the outside world and preventing liquid, gas, or other substances from leaking or penetrating into the connection. On the other hand, the longitudinal relative displacement between the sealing cover 220 and the additional air chamber assembly 400, and between the sealing cover 220 and the lower mounting seat 210 can be effectively prevented, improving the connection effect and ensuring the stability and reliability of the connection among the three.

[0072] In some cases, the seals may also be arranged otherwise. For example, the first seal 2221 may be arranged between the connecting wall 450 of the additional air chamber assembly 400 and the first step surface 2222; the second seal 2231 may be arranged between the additional air chamber assembly 400 and the second step surface 2232; the third seal 2241 may be arranged between the third step surface 2242 and the crimping portion 231 of the upper mounting seat 230.

[0073] Please also refer to Figure 6 、 Figure 7 and Figure 10 , the upper mounting seat 230 covers the outside of the lower mounting seat 210 and the seal cover 220 and is located above the mounting plate 240, and the seal cover 220 is fixed to the lower mounting seat 210. Corresponding threads are provided on the inner side of the upper mounting seat 230 and the outer side of the upper connecting portion 212, and the upper mounting seat 230 is sleeved and fixed to the lower mounting seat 210 through the threads.

[0074] The upper mounting seat 230 includes a crimping portion 231, a connecting portion 232 and a plurality of reinforcing ribs 233. Both the crimping portion 231 and the connecting portion 232 are arranged in a ring shape. The crimping portion 231 is located above the lower mounting seat 210 and the seal cover 220. The positioning set 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 seal cover 220 to press the seal cover 220 tightly in the lower mounting seat 210.

[0075] The connecting portion 232 is arranged on the periphery of the crimping portion 231 and is in sliding fit 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 retaining portion 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 inside to outside, so that the structural strength of the upper mounting seat 230 is improved.

[0076] One end of the connecting portion 232 is provided with an internal thread, and the outer retaining portion 2321 is arranged on one side of the other end of the connecting portion 232. The upper end of the outer wall of the mounting main ring 215 is provided with an external thread matching the internal thread. The internal thread on the connecting portion 232 is matched with the external thread on the mounting main ring 215, and the threaded connection between the connecting portion 232 and the mounting main ring 215 can be realized, so as to realize the threaded connection between the upper mounting seat 230 and the lower mounting seat 210.

[0077] By threadedly connecting 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 does not vibrate in the mounting groove 270, thereby reducing the occurrence of abnormal noise.

[0078] Further, a plurality of through holes 234 are provided on the upper mounting seat 230, and a plurality of positioning holes 214 are provided on the lower mounting seat 210. The positioning set screw 2311 passes through the through hole 234 and is inserted into the positioning hole 214 to rotationally position between the upper mounting seat 230 and the lower mounting seat 210.

[0079] 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 threadedly connected and rotated in place, the through holes 234 correspond to the positioning holes 214, and the positioning set screw 2311 passes through the through hole 234 and is inserted into the positioning hole 214, playing a role in restricting 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.

[0080] In this embodiment, the through hole 234 can be set as a straight hole or a threaded hole. Or, the positioning hole 214 can also be provided with an internal thread that cooperates with the positioning set screw 2311.

[0081] In an alternative 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; as Figure 7 shown, the included angle α formed by the center of an adjacent through hole 234 reaching the center of the concentric circle, as Figure 9 shown, and the included angle β formed by the center of an adjacent positioning hole 214 reaching the center of the concentric circle, the relationship between the included angle α and the included angle β is:

[0082] α≠β.

[0083] Since the upper mounting seat 230 and the lower mounting seat 210 are threadedly connected, after the wear of the upper mounting bearing 9 or the lower mounting bearing 13, it is necessary to adjust the relative position between the upper mounting seat 230 and the lower mounting seat 210 to reduce the gap. Therefore, the fixed position after the relative rotation between the upper mounting seat 230 and the lower mounting seat 210 is not fixed.

[0084] To ensure that the positioning set screw 2311 can pass through the through hole 234 and insert into the positioning hole 214 to achieve rotational limit between the upper mounting base 230 and the lower mounting base 210, in this embodiment, the angles of the included angle α and the included angle β are set to be different, such as Figure 7 and Figure 9 shown. In this setting method, after the upper mounting base 230 and the lower mounting base 210 rotate relative to each other, any through hole 234 and any positioning hole 214 may correspond to each other at any position. At this time, insert the positioning set screw 2311 into the corresponding through hole 234 and positioning hole 214.

[0085] That is to say, as long as one through hole 234 corresponds to the positioning hole 214 and a positioning set screw 2311 can be inserted, the rotational positioning between the upper mounting base 230 and the lower mounting base 210 can be achieved.

[0086] The mounting plate 240 is installed between the upper mounting base 230 and the lower mounting base 210 and is rotatably connected to both. Specifically, an installation groove 270 is formed outside between the upper mounting base 230 and the lower mounting base 210, and one end of the mounting plate 240 is arranged in the installation groove 270. The installation groove 270 includes a first annular groove 247 and a second annular groove 248. The installation main ring 215, the lower blocking portion 211, the connecting portion 232 and the outer blocking portion 2321 jointly form the installation groove 270, and the mounting plate 240 is inserted into the installation groove 270 through between the outer blocking portion 2321 and the lower blocking portion 211.

[0087] An upper bearing assembly 250 is arranged between the upper mounting base 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 arranged between the mounting plate 240 and the lower mounting base 210, and a second annular groove 248 for accommodating the lower bearing assembly 260 is formed between the mounting plate 240 and the lower blocking portion 211.

[0088] Specifically, the top height of the mounting plate 240 is lower than the top height of the lower mounting base 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.

[0089] The bent 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 is correspondingly arranged with the outer blocking portion 2321, and the two jointly 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 bent portion 242, the first limiting portion 243, the connecting portion 232, and the outer blocking portion 2321 jointly form the first annular groove 247. The second limiting portion 244 extends downward from the outer side of the clamping portion 241. The lower blocking 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 blocking portion 211 jointly form the second annular groove 248.

[0090] The protruding portion 245 is arranged 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 protruding portion 245 extends radially outward to form a plurality of lugs 2451. The second fasteners 246 are passed through the lugs 2451.

[0091] It can be understood that in the extending direction of the longitudinal axis 500, the mounting plate 240 is located at the middle position of the mounting assembly 200. The upper part thereof is pressed by components such as the upper bearing assembly 250 and the upper mounting seat 230, and the lower part is supported by components such as the lower bearing assembly 260 and the lower blocking portion 211. In this way, when the mounting plate 240 is connected to the vehicle body, external forces can be better absorbed and dispersed, improving the connection stability between the entire MacPherson air spring and the vehicle body, and avoiding the separation of the air spring from the vehicle body caused by excessive vehicle body movement intensity.

[0092] The upper bearing assembly 250 is arranged between the upper mounting seat 230 and the mounting plate 240 and transmits the axial force and rotational force between the two. The upper bearing assembly 250 includes a first seat ring 251 fixed to the upper mounting seat 230, a second seat ring 252 fixed to the mounting plate 240, and a first sliding ring 253 arranged between the first seat ring 251 and the second seat ring 252. Specifically, the first seat ring 251 is relatively fixed to the connecting portion 232, and the second seat ring 252 is relatively fixed to the clamping portion 241. The first seat ring 251 and the second seat ring 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 realize relative rotation around the longitudinal axis 500 through the upper bearing assembly 250.

[0093] Further, the upper bearing assembly 250 further includes a first buffer member 254 disposed between the second seat ring 252 and the mounting plate 240. One side of the first buffer member 254 close to the second seat ring 252 is in contact with the second seat ring 252. A protrusion is provided on one side of the first buffer member 254 close to the mounting plate 240 to abut against the mounting plate 240. The first buffer member 254 can be set as an elastic structure to absorb noise or vibration from the upper mounting seat 230 and the mounting plate 240, improve the NVH performance, and make the connection of the upper bearing assembly 250 more stable.

[0094] 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 between the two. The lower bearing assembly 260 includes a third seat ring 261 fixed to the mounting plate 240, a fourth seat ring 262 fixed to the lower mounting seat 210, and a second sliding ring 263 disposed between the third seat ring 261 and the fourth seat ring 262. Specifically, the third seat ring 261 is relatively fixed to the clamping portion 241, and the fourth seat ring 262 is relatively fixed to the lower blocking portion 211. The third seat ring 261 and the fourth seat ring 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.

[0095] When the MacPherson air spring strut assembly is stressed, 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 blocking portion 211 receives the force from the upper top seat 120 and abuts upward against the lower bearing assembly 260. Therefore, the MacPherson air spring strut assembly of the present application places higher requirements on the stiffness, sliding smoothness and force transmission path of the lower bearing assembly 260. In this embodiment, the cross-section of the third seat ring 261 and the fourth seat ring 262 in the longitudinal direction is L-shaped. The radially extending section is disposed between the lower blocking portion 211 and the clamping portion 241, and the longitudinally extending section is disposed between the upper connecting portion 212 and the bending portion 242. The second sliding ring 263 is radially disposed. In this way, the lower mounting seat 210 and the mounting plate 240 can transmit forces in both the longitudinal and transverse directions, making their relative rotation more stable.

[0096] Further, the lower bearing assembly 260 further includes a second buffer member 264 disposed between the mounting plate 240 and the third seat ring 261. The upper and lower sides of the second buffer member 264 are respectively in contact with the mounting plate 240 and the third seat ring 261. The second buffer member 264 can be set as an elastic structure to absorb noise or vibration from the mounting plate 240 and the lower mounting seat 210, improve the NVH performance, and make the connection of the lower bearing assembly 260 more stable.

[0097] By providing the upper bearing assembly 250 and the lower bearing assembly 260, the mounting plate 240 can rotate relative to the upper mounting seat 230 and the lower mounting seat 210 about the longitudinal axis 500. Since the upper mounting seat 230, the lower mounting seat 210 and the sealing cover 220 are fixed to each other, the mounting plate 240 and the sealing cover 220 will also rotate relative to each other about the longitudinal axis 500. Both the upper bearing assembly 250 and the lower bearing assembly 260 are plain bearings, which can effectively reduce the torsional force during the movement of the MacPherson air spring assembly, increase the rotation angle to ±45°, and can operate stably within the first annular groove 247 and the second annular groove 248 without disengaging outward. Both the upper bearing assembly 250 and the lower bearing assembly 260 are pre-compressed to generate a certain preloading force.

[0098] 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.

[0099] The piston rod 310 and the oil storage cylinder 320 extend into the main air chamber 110 from the receiving hole 131. The top rubber 330 is press-fitted into the inner cavity of the lower mounting seat 210 with an interference fit and is fixed to the upper end of the piston rod 310 by a fourth fastener 311. The upper end of the piston rod 310 is fixed inside the lower mounting seat 210 through the top rubber 330. During the driving of the vehicle, the swing of the damper rod assembly 300 is realized through the deformation of the top rubber 330. The top of the top rubber 330 abuts against the sealing cover 220 through the abutting portion 225, preventing excessive deformation of the top rubber 330.

[0100] The oil storage cylinder 320 wraps around the lower part of the piston rod 310 and is connected to the lower end seat 130. The oil storage cylinder 320 at least partially defines a damping chamber for containing a certain amount of damping fluid. An annular groove is provided at the lower part of the lower end seat 130, and a fifth seal 312 and a sealing gasket 313 are placed in the annular groove to achieve a sealed connection with the oil storage cylinder 320, isolating the main air chamber 110 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 their relative rotation, making the lower end seat 130 and the oil storage cylinder 320 relatively fixed.

[0101] The buffer block 340 is press-fitted into the lower part of the lower mounting seat 210 with an interference fit to achieve buffering and limiting during the vehicle bounce. The damper sealing cover 350 is press-fitted onto the oil storage cylinder 320 with an interference fit.

[0102] 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 secondary 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 from the secondary air chamber 410. The connecting wall 450 is arranged radially to connect the annular inner wall 420. The inner side of the inner wall 420 encloses a receiving space 421, the receiving space 421 is located above the connecting wall 450, and the first step surface 2222 is located below the connecting wall 450.

[0103] The solenoid valve 460 is disposed in the receiving space 421 and is used to control the on-off between the main air chamber 110 and the secondary air chamber 410. When the connection between the main air chamber 110 and the secondary air chamber 410 is disconnected, the MacPherson air spring strut assembly is set as a single chamber, and at this time, only the main air chamber 110 is used to achieve the stiffness adjustment and buffering and vibration reduction effects of the air spring. When the main air chamber 110 is in communication with the secondary air chamber 410, the MacPherson air spring strut assembly is set as a double chamber, and at this time, the main air chamber 110 and the secondary air chamber 410 act together to improve the vibration reduction effect through a larger air chamber space. By providing the additional air chamber assembly 400, the double-chamber setting of the MacPherson air spring strut assembly is realized, and the two-stage variable stiffness of the air spring is further achieved, improving the flexibility and comfort of the MacPherson air spring strut assembly.

[0104] The shape of the additional air chamber assembly 400 is not limited and can be flexibly designed according to actual needs. In this embodiment, each wall of the additional air chamber assembly 400 and the cavity formed inside it are symmetrically arranged along the circumferential direction of the longitudinal axis 500. Both the inner wall 420 and the outer wall 430 are cylindrical and coaxially arranged, and the receiving space 421 is a columnar space. By providing the circumferentially symmetric additional air chamber assembly 400, the balance of air pressure and the even distribution of load can be realized, making the MacPherson air spring strut assembly more evenly stressed, further improving the comfort and stability, and avoiding deformation or imbalance caused by uneven load distribution. The entire additional air chamber assembly 400 is made of plastic material, which does not affect the performance of the MacPherson air spring strut assembly while reducing the weight of the whole vehicle.

[0105] The additional air chamber assembly 400 is fixed on the sealing cover 220. The sealing cover 220 and the additional air chamber assembly 400 can be fixed by snap connection 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 on the sealing cover 220.

[0106] On one side of the auxiliary air chamber 410 close to the sealing cover 220, a plurality of first ventilation holes 470 are provided. On one side of the communication chamber 221 close to the additional air chamber assembly 400, a plurality of second ventilation holes 2234 are provided, and the second ventilation holes 2234 communicate with the first ventilation holes 470. Both the first ventilation holes 470 and the second ventilation holes 2234 are evenly distributed circumferentially around the longitudinal axis 500.

[0107] Furthermore, a sealed annular transfer chamber 480 is formed between the sealing cover 220 and the additional air chamber assembly 400. The transfer chamber 480 communicates with the first ventilation holes 470 and the second ventilation holes 2234 respectively. The transfer chamber 480 provides a buffer space for the gas exchange between the first ventilation holes 470 and the second ventilation holes 2234. During the actual assembly process, efficient gas flow can be achieved without the need for precise alignment between the first ventilation holes 470 and the second ventilation holes 2234, which expands the design space and improves the assembly efficiency.

[0108] Specifically, the outer end of the second step surface 2232 protrudes upward to form a limiting block 2235. The limiting block 2235 abuts against the additional air chamber assembly 400, creating a gap between the second step surface 2232 and the additional air chamber assembly 400 in the longitudinal direction. The second step surface 2232, the limiting block 2235, the first sealing surface 2223 and the additional air chamber assembly 400 together form the transfer chamber 480.

[0109] The gas passage in this embodiment is jointly formed by the first ventilation holes 470, the second ventilation holes 2234 and the transfer chamber 480. It can be understood that this embodiment only gives one setting method of the gas passage. In other cases, those skilled in the art can give other designs for the specific structure of the gas passage according to actual needs, as long as the communication between the main air chamber 110 and the auxiliary air chamber 410 can be satisfied.

[0110] The bottom of the additional air chamber assembly 400 is close to the top of the upper mounting seat 230, making the overall structure of the MacPherson air spring strut assembly more compact, saving space, reducing costs, and at the same time improving the response speed and energy transfer efficiency of the air spring, making the stiffness adjustment of the air spring more flexible and efficient with higher stability.

[0111] Compared with the first embodiment, the MacPherson air spring strut assembly in the second embodiment only has different designs in the structure of the sealing cover 220', and the additional air chamber assembly 400 is cancelled. Therefore, only the sealing cover 220' will be described here, and other parts will not be elaborated.

[0112] Such as Figure 13 、 Figure 14 and Figure 15As shown, the sealing cover 220' is located within the lower mounting base 210 and cooperates with the upper mounting base 230 to seal the upper end of the MacPherson air spring strut assembly. A communication cavity 221' is formed within the sealing cover 220', and the communication cavity 221' communicates with the main air chamber 110.

[0113] A third sealing member 2241' is provided between the sealing cover 220' and the lower mounting base 210. Specifically, in this embodiment, the sealing cover 220' includes a laterally disposed third step surface 2242' and a third sealing surface 2243' extending downward 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 base 210. With such a setting, when the upper mounting base 230 is fixed to the lower mounting base 210, it can also be simultaneously pressed against the third step surface 2242' to limit the sealing cover 220', and press and fix the sealing cover 220' to the lower mounting base 210. The third sealing surface 2243' fits with the upper connecting portion 212, and the third sealing member 2241' is disposed between the third sealing surface 2243' and the upper connecting portion 212. The third sealing member 2241' is substantially a static seal.

[0114] Further, a longitudinally extending abutting portion 225' is provided at the bottom of the sealing cover 220', and the abutting portion 225' abuts against the damper rod assembly 300 to limit the longitudinal movement of the damper rod assembly 300. A limiting member (not shown in the figure) is provided between the lower mounting base 210 and the sealing cover 220', and the limiting member is used to limit the relative rotation between the lower mounting base 210 and the sealing cover 220'.

[0115] The present application also provides a vehicle, including the MacPherson air spring strut assembly as described above.

[0116] By providing the additional air chamber assembly 400 in the MacPherson air spring strut assembly and vehicle of the present application, the auxiliary air chamber 410 within the additional air chamber assembly 400 can communicate with the main air chamber 110 within the spring body 100, changing the overall air chamber volume of the MacPherson air spring, and thus enabling adjustment of the stiffness of the MacPherson air spring strut assembly, enhancing the stability and comfort of the MacPherson air spring strut assembly in different application scenarios.

[0117] Meanwhile, by disposing the mounting assembly 200 at the upper part of the spring body 100 and the additional air chamber assembly 400 at the upper part of the mounting assembly 200, the additional air chamber assembly 400 does not affect the connection, sealing, and movement relationship between the spring body 100 and the mounting assembly 200 itself, and the overall structure of the MacPherson air spring strut assembly is also more compact and smooth. During the assembly process, only the additional air chamber assembly 400 needs to be sealed and connected to the sealing cover 220, greatly simplifying the assembly process of the additional air chamber assembly 400 and improving the manufacturing efficiency.

[0118] Taking Embodiment 1 as an example, the MacPherson air spring strut assembly of the present application includes, from top to bottom, a first seal 2221, a second seal 2231, a third seal 2241, a fourth seal 2131, and a fifth seal 312, realizing the sealing between 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-ring seals, with strong sealing performance and all being static seals, improving the sealing reliability while increasing the service life of the seals and reducing the requirements for the use of the seals.

[0119] In addition, the MacPherson 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 arranged on the upper and lower sides of the mounting plate 240, realizing the relative rotation of the mounting plate 240 with the upper mounting seat 230 and the lower mounting seat 210, so that the MacPherson air spring strut assembly can rotate relative to the vehicle body when the vehicle turns. The relative rotation structure of the MacPherson air spring strut assembly of the present application is simple and the connection is reliable. At the same time, since the mounting plate 240 has no direct connection with the main air chamber 110 in the spring body 100, there is no need to consider the airtightness problem when the mounting plate 240 rotates, effectively reducing the design and manufacturing difficulty.

[0120] The above description is only a preferred embodiment of the present application and does not impose any form of limitation on the present application. Although the present application has been disclosed above in a preferred embodiment, it is not intended to limit the present application. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to make it an equivalent embodiment with equivalent changes within the scope of the technical solution of the present application. However, as long as the content does not depart from the technical solution of the present application, any simple modification, equivalent change, and modification made to the above embodiment based on the technical essence of the present application still fall within the scope of the technical solution of the present application.

Claims

1. An installation component, characterized in that, It includes a lower mounting base, an upper mounting base and a mounting plate. The lower mounting base is used to be fixed to the spring body. The upper mounting base is fixed to the lower mounting base. The mounting plate is sleeved outside the lower mounting base. An upper bearing assembly is arranged between the upper mounting base and the mounting plate, and a lower bearing assembly is arranged between the mounting plate and the lower mounting base.

2. The mounting assembly according to claim 1, wherein The mounting plate includes a clamping portion located between the upper bearing assembly and the lower bearing assembly. A first annular groove is formed above the clamping portion to accommodate the upper bearing assembly, and a second annular groove is formed below the clamping portion to accommodate the lower bearing assembly.

3. The mounting assembly according to claim 2, characterized in that, The mounting plate further includes a bent portion extending upward from the inner side of the clamping portion and a first limiting portion extending upward from the outer side of the clamping portion. The clamping portion, the bent portion, the first limiting portion and the upper mounting base together form the first annular groove.

4. The mounting assembly according to claim 2, wherein The mounting plate further includes a second limiting portion extending downward from the outer side of the clamping portion. The lower mounting base includes a lower blocking portion protruding radially outward. The clamping portion, the second limiting portion and the lower blocking portion together form the second annular groove.

5. The mounting assembly according to claim 2, characterized in that, The mounting plate includes a protruding portion arranged around the clamping portion, and a plurality of second fasteners are provided on the protruding portion.

6. The mounting assembly according to claim 1, characterized in that, The upper bearing assembly includes a first seat ring fixed to the upper mounting base, a second seat ring fixed to the mounting plate, and a first sliding ring arranged between the first seat ring and the second seat ring. The lower bearing assembly includes a third seat ring fixed to the mounting plate, a fourth seat ring fixed to the lower mounting base, and a second sliding ring arranged between the third seat ring and the fourth seat ring.

7. The mounting assembly according to claim 2, wherein The mounting assembly further includes a sealing cover cooperating with the lower mounting base. The upper mounting base includes an annular crimping portion and a connecting portion. The crimping portion is located above the lower mounting base and the sealing cover, and the connecting portion is arranged opposite to the clamping portion.

8. The mounting assembly according to claim 7, wherein The outer side of the connecting portion is bent downward to form an outer blocking portion. A first limiting portion corresponding to the outer blocking portion is arranged on the mounting plate. The outer blocking portion and the first limiting portion together limit the upper bearing assembly.

9. A MacPherson air spring strut assembly, characterized in that, It includes a spring body, a damper rod assembly and the mounting assembly according to any one of claims 1-8. The mounting assembly is arranged on the upper part of the spring body, and the damper rod assembly is arranged on the lower part of the spring body.

10. The MacPherson air spring strut assembly according to claim 9, characterized in that, The spring body includes a lower end seat, and the lower end seat is connected to the damper rod assembly. An eccentric receiving hole is provided on the lower end seat, and the spring body and the damper rod assembly are arranged obliquely.

11. The MacPherson air spring strut assembly according to claim 9, characterized in that, It further includes an additional air chamber assembly. The additional air chamber assembly is fixed to the upper part of the mounting assembly and is connected to the spring body through the mounting assembly.

12. The MacPherson air spring strut assembly according to claim 11, characterized in that, The mounting assembly further includes a sealing cover fixed to the additional air chamber assembly, and a gas passage is formed between the sealing cover and the additional air chamber assembly.

13. The MacPherson air spring strut assembly according to claim 12, characterized in that, A first seal and a second seal are arranged between the sealing cover and the additional air chamber assembly. The first seal and the second seal are respectively located on both sides of the gas passage.

14. The MacPherson air spring strut assembly according to claim 12, characterized in that, A secondary air chamber is formed within the additional air chamber assembly, and a communication chamber communicating with the spring body is formed within the sealing cover. A plurality of first ventilation holes are provided on one side of the secondary air chamber close to the sealing cover, and a plurality of second ventilation holes are provided on one side of the communication chamber close to the additional air chamber assembly. The second ventilation holes communicate with the first ventilation holes.

15. A vehicle, characterized in that, Comprising a MacPherson air spring strut assembly according to any one of claims 9-14.

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