Air spring, air suspension assembly, and vehicle

Abstract

The application discloses an air spring, an air suspension assembly and a vehicle. The air spring comprises a piston assembly, a base and an air bag connected between the piston assembly and the base, a main chamber is defined between the piston assembly, the base and the air bag, at least one auxiliary chamber is defined in the piston assembly, and the auxiliary chamber is selectively communicated with the main chamber. According to the air spring provided by the embodiment of the application, the auxiliary chamber in the piston assembly is selectively communicated with the main chamber, so that the stiffness of the air spring is adjustable, the air spring can be used for the controllability and comfort of the vehicle, and the user experience and product competitiveness are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, in particular to an air spring, an air suspension assembly and a vehicle. BACKGROUND

[0002] In the related art, the air spring is a single-cavity structure, that is, the space inside the air spring forms a cavity. Such a single-cavity air spring can only realize one stiffness curve. When the air spring is used in a vehicle, the handling and comfort of the vehicle cannot be well balanced, and it is difficult to meet the needs of the vehicle manufacturer and users. SUMMARY

[0003] The present application aims to at least solve one of the above technical problems in the prior art. To this end, the present application provides an air spring, the stiffness of which is adjustable.

[0004] The present application also provides an air suspension assembly having the above air spring.

[0005] The present application also provides a vehicle having the above air suspension assembly.

[0006] According to the air spring of the embodiments of the present application, the piston assembly, the base and the air bag define a main cavity therebetween, at least one secondary cavity is defined in the piston assembly, and the secondary cavity is selectively communicated with the main cavity.

[0007] According to the air spring of the embodiments of the present application, the secondary cavity in the piston assembly is selectively communicated with the main cavity to realize adjustable stiffness of the air spring, so that the air spring can balance the handling and comfort of the vehicle, and improve user experience and product competitiveness.

[0008] According to some embodiments of the present application, the piston assembly comprises a piston body connected with the air bag, at least one secondary cavity being defined in the piston body; and electromagnetic valves arranged in the piston body, the number of the electromagnetic valves corresponding to the number of the secondary cavities, the electromagnetic valves being used to control whether the corresponding secondary cavities are communicated with the main cavity.

[0009] Further, a plurality of secondary cavities are defined in the piston body, and the volume of each secondary cavity is different.

[0010] Further, the electromagnetic valves are arranged along the radial direction of the air spring.

[0011] According to some embodiments of the present application, the piston body comprises a piston cover and a piston wall extending from one end of the piston cover to the base, the piston wall comprises an inner wall and an outer wall connected to each other, the outer wall is located radially outside the inner wall, and at least one of the auxiliary chambers is defined between the outer wall and the inner wall.

[0012] Further, the air bag is connected to the outer wall, and the air spring further comprises a piston profile sleeve, the piston profile sleeve is sleeved radially outside the outer wall, and at least part of the piston profile sleeve is located between the air bag and the outer wall.

[0013] According to some embodiments of the present application, the air spring further comprises an upper cover, the upper cover is arranged on the side of the piston assembly away from the base, and the upper cover is rotatably connected to the piston assembly.

[0014] According to some embodiments of the present application, the piston assembly is further provided with an air inlet joint, the air inlet joint is in communication with the main chamber.

[0015] According to another aspect of the embodiments of the present application, an air suspension assembly comprises the air spring described above.

[0016] According to the embodiments of the present application, the piston assembly of the air spring defines at least one auxiliary chamber, and the auxiliary chamber is selectively communicated with the main chamber to realize adjustable stiffness of the air spring, so that the air spring can balance the controllability and comfort of the vehicle, and improve the user experience and product competitiveness.

[0017] According to another aspect of the embodiments of the present application, a vehicle comprises the air suspension assembly described above.

[0018] According to the embodiments of the present application, the piston assembly of the air spring defines at least one auxiliary chamber, and the auxiliary chamber is selectively communicated with the main chamber to realize adjustable stiffness of the air spring, so that the air spring can balance the controllability and comfort of the vehicle, and improve the user experience and product competitiveness.

[0019] Additional aspects and advantages of the present application will be given in part in the following description, will become apparent in part from the following description, or will be learned by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a perspective view of an air spring according to an embodiment of the present application;

[0021] Figure 2 is a structural schematic view of an air spring according to an embodiment of the present application;

[0022] Figure 3 is a sectional view of an air spring according to an embodiment of the present application;

[0023] Figure 4 is a schematic view of an air spring according to an embodiment of the present application in a first working state;

[0024] Figure 5 is a schematic view of an air spring according to an embodiment of the present application in a second working state;

[0025] Figure 6 is a schematic view of an air spring according to an embodiment of the present application in a third working state;

[0026] Figure 7 is a schematic view of an air spring according to an embodiment of the present application in a fourth working state.

[0027] Reference Signs:

[0028] piston assembly 1, piston body 11, piston cover 111, air inlet joint 1111, piston wall 112, inner wall 1121, outer wall 1122, electromagnetic valve 12, first electromagnetic valve 12a, second electromagnetic valve 12b, piston section sleeve 13, base 2, air bag 3, main chamber 4, auxiliary chamber 5, first auxiliary chamber 5a, second auxiliary chamber 5b, upper cover 6, protective sleeve 71, dust cover 72, buckling ring 8, push ring 9, air spring 10. DETAILED DESCRIPTION

[0029] Embodiments of the present application are described below in detail with reference to the accompanying drawings, wherein the same or similar components are denoted by the same or similar reference numerals throughout the drawings. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and should not be understood as limiting the present application.

[0030] In the description of the present application, it should be understood that the terms "thickness", "upper", "lower", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be understood as limiting the present application.

[0031] In addition, the terms "first", "second" are only used for descriptive purposes, and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified.

[0032] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integrated; can be mechanical connection, or electrical connection or can be communicated with each other; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0033] The following will be described in detail Figures 1-7 The air spring 10, air suspension assembly and vehicle according to the embodiments of the present application.

[0034] Referring to Figures 1-3 As shown in the figure, the air spring 10 comprises a piston assembly 1, a base 2 and an air bag 3 connected between the piston assembly 1 and the base 2, and a main chamber 4 is defined between the piston assembly 1, the base 2 and the air bag 3, the air spring 10 can be used in a vehicle, the air spring 10 is suitable for connecting the swing arm and the frame of the vehicle, compressed air can be filled in the main chamber 4 to utilize the compressibility of air to achieve the elastic connection of the swing arm and the subframe through the air spring 10, and the air spring 10 can bear and transmit vertical load, and mitigate and inhibit the impact caused by uneven road surface.

[0035] At least one sub-chamber 5 is defined in the piston assembly 1, and the sub-chamber 5 is selectively communicated with the main chamber 4. It can be understood that one or more sub-chambers 5 can be defined in the piston assembly 1, the effective working volume of the air spring 10 is the sum of the volume of the main chamber 4 and the volume of the sub-chamber 5 communicated with the main chamber 4, and the effective working volume of the air spring 10 is negatively correlated with the stiffness of the air spring 10, so that by controlling whether the sub-chamber 5 is communicated with the main chamber 4, the stiffness of the air spring 10 can be adjusted.

[0036] When all the sub-chambers 5 are not communicated with the main chamber 4, the volume of the main chamber 4 is the effective working volume of the air spring 10, at this time the effective working volume of the air spring 10 is the smallest and the stiffness is the largest. When all the sub-chambers 5 are communicated with the main chamber 4, the sum of the volume of the main chamber 4 and the volume of all the sub-chambers 5 communicated with the main chamber 4 is the effective working volume of the air spring 10, at this time the effective working volume of the air spring 10 is the largest and the stiffness is the smallest. When the number of the sub-chambers 5 is multiple, by controlling the number of the sub-chambers 5 communicated with the main chamber 4, the stiffness of the air spring 10 can be adjusted between the maximum stiffness and the minimum stiffness to meet the requirements of the stiffness of the air spring 10 under different working conditions, so that the air spring 10 has multiple stiffness curves to balance the controllability and comfort of the vehicle, and the same vehicle can have multiple styles in the whole vehicle performance tuning, thereby increasing the product competitiveness.

[0037] According to the air spring 10 of the embodiment of the present application, at least one sub-chamber 5 is defined in the piston assembly 1, and the sub-chamber 5 is selectively communicated with the main chamber 4, so that the stiffness of the air spring 10 is adjustable, and the air spring 10 can balance the controllability and comfort of the vehicle, and improve the user experience and product competitiveness.

[0038] In some embodiments of the present application, referring to Figures 1-3 As shown in the figure, the piston assembly 1 comprises a piston body 11 and solenoid valves 12, the piston body 11 is connected with the air bag 3, the main chamber 4 is defined among the piston body 11, the base 2 and the air bag 3, at least one sub-chamber 5 is defined in the piston body 11, the solenoid valves 12 are arranged in the piston body 11, the number of the solenoid valves 12 corresponds to the number of the sub-chambers 5, and the solenoid valves 12 are used to control whether the corresponding sub-chambers 5 are communicated with the main chamber 4. The number of the sub-chambers 5 defined in the piston body 11 can be one, two or more than two, and the arrangement of multiple sub-chambers 5 can realize more accurate and rich stiffness control of the air spring 10.

[0039] For example, referring to Figures 1-7 As shown in the figure, two sub-chambers 5 are defined in the piston body 11, the two sub-chambers 5 are respectively a first sub-chamber 5a and a second sub-chamber 5b, the piston assembly 1 is further respectively provided with a first solenoid valve 12a corresponding to the first sub-chamber 5a and a second solenoid valve 12b corresponding to the second sub-chamber 5b, when the first solenoid valve 12a is in an open state, the first sub-chamber 5a is communicated with the main chamber 4, when the first solenoid valve 12a is in a closed state, the first sub-chamber 5a is disconnected with the main chamber 4, when the second solenoid valve 12b is in an open state, the second sub-chamber 5b is communicated with the main chamber 4, and when the second solenoid valve 12b is in a closed state, the second sub-chamber 5b is disconnected with the main chamber 4.

[0040] When the vehicle passes through a rugged road, the wheel jump stroke is large, the vibration frequency is low, and large stiffness is needed to suppress the roll and improve the stability of the vehicle, at this time, the first solenoid valve 12a and / or the second solenoid valve 12b are closed, so that the air spring 10 obtains a higher spring stiffness.

[0041] When the vehicle passes through a gravel road or an unpaved road, the wheel jump stroke is small, the vibration frequency is high, and small stiffness is needed to improve the comfort, at this time, the first solenoid valve 12a and the second solenoid valve 12b are opened, so that the stiffness of the air spring 10 reaches the minimum.

[0042] When the vehicle is in the working condition of driving on a highway, rapid lane changing and emergency avoidance, the vehicle body needs sufficient support stiffness to ensure safety, at this time, the first solenoid valve 12a and the second solenoid valve 12b are closed, so that the stiffness of the air spring 10 reaches the maximum.

[0043] When the vehicle is in a sudden acceleration, sudden braking, sharp turn or other working conditions, the first solenoid valve 12a and the second solenoid valve 12b are closed to instantly increase the stiffness of the air spring 10, suppress pitch and roll, and improve the vehicle's handling stability and comfort.

[0044] In some embodiments of the present invention, the piston body 11 defines multiple sub-chambers 5, each of which has a different volume. This allows the air spring 10 to have a different stiffness when each sub-chamber 5 is connected to the main chamber 4. This helps increase the number of gradients for adjusting the stiffness of the air spring 10 to meet the stiffness requirements of the air spring 10 under different road conditions and vehicle operating conditions. It should be noted that the volume of each sub-chamber 5 can be adjusted according to calibration requirements, and the volumes of the multiple sub-chambers 5 defined by the piston body 11 can also be set to be the same to meet the design requirements of different vehicle models.

[0045] For example, refer to Figures 1-7 As shown, the multiple sub-chambers 5 include a first sub-chamber 5a and a second sub-chamber 5b, and the volume of the second sub-chamber 5b is larger than that of the first sub-chamber 5a. The volume of the main chamber 4 is V0, the volume of the first sub-chamber 5a is V1, and the volume of the second sub-chamber 5b is V2. By controlling whether the first sub-chamber 5a and the second sub-chamber 5b are connected to the main chamber 4, the air spring 10 can have four different effective working volumes, and the four different effective working volumes are: V0, V0+V1, V0+V2, and V0+V1+V2. The four different effective working volumes correspond to the four working states of the air spring 10, and the air spring 10 has different stiffness in each working state.

[0046] Reference Figure 4 As shown, when the air spring is in the first working state, the first solenoid valve 12a is closed, the second solenoid valve 12b is closed, the first sub-chamber 5a, the second sub-chamber 5b and the main chamber 4 are not connected, the effective working volume of the air spring 10 is V0, and the air spring 10 is in the highest stiffness state. At this time, the vehicle is in extreme sports mode and the vehicle has excellent handling.

[0047] Reference Figure 5 As shown, when the air spring is in the second working state, the first solenoid valve 12a is open, the second solenoid valve 12b is closed, the first sub-chamber 5a is connected with the main chamber 4, and the second sub-chamber 5b is not connected with the main chamber 4. The effective working volume of the air spring 10 is V0+V1, and the air spring 10 is in a medium to high stiffness state, which can be used for the vehicle's sport and comfort mode, and the vehicle has better handling.

[0048] Reference Figure 6As shown, when the air spring is in the third working state, the first electromagnetic valve 12a is closed, the second electromagnetic valve 12b is opened, the first auxiliary chamber 5a is not communicated with the main chamber 4, the second auxiliary chamber 5b is communicated with the main chamber 4, the effective working volume of the air spring 10 is V0+V2, and the air spring 10 is in a medium-low stiffness state, which can be used for a comfort and sports mode of the vehicle, and the comfort of the vehicle is better.

[0049] With reference to Figure 7 As shown, when the air spring is in the fourth working state, the first electromagnetic valve 12a is opened, the second electromagnetic valve 12b is opened, the first auxiliary chamber 5a and the second auxiliary chamber 5b are both communicated with the main chamber 4, the effective working volume of the air spring 10 is V0+V1+V2, and the air spring 10 is in a lowest stiffness state, at which time the vehicle is in an optimal comfort mode, and the comfort of the vehicle is excellent.

[0050] Therefore, by setting a smaller number of auxiliary chambers 5, the air spring 10 is adjusted to have more stiffness grades, so as to reduce the complexity of the structure of the air spring 10 and meet the needs of users in various use scenarios.

[0051] In some embodiments of the present application, with reference to Figures 1-3 As shown, the electromagnetic valve 12 is arranged along the radial direction of the air spring 10, that is, the axis of the electromagnetic valve 12 is located in the radial plane of the air spring 10 and passes through the axis of the air spring 10, so as to fully utilize the radial space of the air spring 10, reduce the occupied space of the electromagnetic valve 12 in the axial direction of the air spring 10, reduce the influence of the electromagnetic valve 12 on the external contour size of the air spring 10, and avoid the problem of insufficient space for arranging the electromagnetic valve 12 in the axial direction of the air spring 10.

[0052] In some embodiments of the present application, with reference to Figures 1-3 As shown, the piston body 11 includes a piston cover 111 and a piston wall 112, the piston wall 112 extends from one end of the piston cover 111 to the base 2, the piston wall 112 includes an inner wall 1121 and an outer wall 1122 connected in sequence, the outer wall 1122 is located on the radial outer side of the inner wall 1121, and at least one auxiliary chamber 5 is defined between the outer wall 1122 and the inner wall 1121, and the auxiliary chamber 5 is located on the radial outer side of the inner wall 1121, thereby facilitating reduction of the occupied space of the auxiliary chamber 5 in the axial direction of the air spring 10 and improving the space utilization of the air spring 10.

[0053] It should be noted that the outer wall 1122 can be connected with the inner wall 1121 at the bottom of the piston body 11 to define a sub-chamber 5, and the space between the inner wall 1121 and the outer wall 1122 can be divided into multiple sub-chambers 5 by at least one partition plate. The piston cover 111 is provided with a solenoid valve accommodating cavity in communication with the main chamber 4, the solenoid valve 12 is fixed in the solenoid valve accommodating cavity, the inner wall 1121 and the outer wall 1122 are sealingly connected towards one end of the base 2, and the inner wall 1121 and the outer wall 1122 towards one end of the piston cover 111 can be capped by the piston cover 111. The piston cover 111 is provided with a gas communication hole in communication with the sub-chamber 5 and the solenoid valve accommodating cavity, and the valve port of the solenoid valve 12 is used to control the opening and closing of the gas communication hole, so as to realize the control of whether the sub-chamber 5 is in communication with the main chamber 4.

[0054] In some embodiments of the present application, referring to Figure 2 and Figure 3 , the air bag 3 is connected with the outer wall 1122, and the air spring 10 further comprises a piston section sleeve 13, which is sleeved on the radially outer side of the outer wall 1122, and at least part of the piston section sleeve 13 is located between the air bag 3 and the outer wall 1122. By adjusting the shape and angle of the surface of the air bag 3 in contact with the piston section sleeve 13 through the parameters such as the shape and thickness of the outer peripheral surface of the piston section sleeve 13, the dynamic parameters of the air spring 10 can be controlled when the piston section sleeve 13 follows the piston assembly 1 to move up and down relative to the air bag 3. The piston section sleeve 13 and the outer wall 1122 can be detachably connected, and the air spring 10 can be adjusted by replacing the piston section sleeve 13, so as to reduce the design change cost of the air spring 10 when used for different vehicle models.

[0055] In some embodiments of the present application, referring to Figures 1-3 , the air spring 10 further comprises an upper cover 6, which is arranged on the side of the piston assembly 1 away from the base 2 and is rotatably connected with the piston assembly 1. When the air spring 10 is subjected to a torsional moment, the upper cover 6 can prevent the air bag 3 from being twisted and avoid the problem of excessive torsion angle of the air spring 10 due to suspension bouncing.

[0056] In some embodiments of the present application, the air spring 10 can be used in a vehicle with rear wheel steering function. The upper cover 6 is adapted to be connected with the vehicle frame, and the base 2 is adapted to be connected with the rear swing arm of the vehicle. When the rear wheel is steered, the upper cover 6 can rotate relative to the piston assembly 1 to avoid the air bag 3 from being twisted.

[0057] In some embodiments of the present application, referring to Figure 1 and Figure 2As shown, the piston assembly 1 is also provided with an air inlet joint 1111, which can be arranged on the piston cover 111 and is in communication with the main chamber 4. The main chamber 4 can be filled with air through the air inlet joint 1111 to elongate the air spring 10, thereby increasing the ground clearance of the vehicle and improving the passability of the vehicle. In addition, the gas in the main chamber 4 can also be discharged through the air inlet joint 1111 to shorten the air spring 10, thereby reducing the ground clearance of the vehicle and improving the stability of the vehicle.

[0058] In some embodiments of the present application, referring to Figures 1-3 As shown, the air spring 10 further comprises a sleeve 71 and a dust cover 72. The sleeve 71 is sleeved on the outside of the air bag 3 to limit the expansion outer diameter of the air bag 3. A clamping ring 8 can be arranged in the air bag 3, and the clamping ring 8 and the sleeve 71 can be clamped on the inner and outer sides of the air bag 3. The dust cover 72 can cover at least part of the structure of the sleeve 71, the piston assembly 1, the air bag 3 and the base 2. The dust cover 72 can be fixed to the sleeve 71 by a clamp. The dust cover 72 can be a multi-section structure to fully protect the air bag 3 and improve the service life of the air spring 10.

[0059] In some embodiments of the present application, referring to Figure 2 and Figure 3 As shown, the air spring 10 further comprises a push ring 9 arranged on the base 2 and used to support the bottom of the air bag 3, so that the bottom of the air bag 3 is separated from the edge of the base 2 to avoid wear of the air bag 3 and improve the service life of the air bag 3.

[0060] According to another aspect of the embodiments of the present application, the air suspension assembly comprises the air spring 10 of the above-mentioned embodiments.

[0061] According to the air suspension assembly of the embodiments of the present application, at least one auxiliary chamber 5 is defined in the piston assembly 1 of the air spring 10, and the auxiliary chamber 5 is selectively communicated with the main chamber 4 to realize adjustable stiffness of the air spring 10, so that the air spring 10 can balance the controllability and comfort of the vehicle and improve the user experience and product competitiveness.

[0062] In some embodiments of the present application, the air suspension assembly further comprises a controller and a plurality of vehicle sensors. The controller is in communication connection with the electromagnetic valve 12 and each vehicle sensor. The plurality of vehicle sensors can be used to detect the height of the vehicle body, the driving speed of the vehicle, the acceleration of the vehicle and the like. The controller performs millisecond-level operation according to the signal input of each vehicle sensor to quickly judge the current road condition or use condition, thereby actively and intelligently controlling the opening and closing of the electromagnetic valve 12 of the air spring 10 to change the stiffness of the air spring 10 by opening and closing the electromagnetic valve 12, so that the stiffness of the air spring 10 quickly adapts to the front road condition or use condition, thereby improving the driving experience of the vehicle.

[0063] According to another aspect of the present application, a vehicle comprises the air suspension assembly of the above embodiment.

[0064] According to the vehicle of the present application, at least one sub-chamber 5 is defined in the piston assembly 1 of the air spring 10, and the sub-chamber 5 is selectively communicated with the main chamber 4, so that the stiffness of the air spring 10 is adjustable, and the air spring 10 can balance the handling and comfort of the vehicle, and improve the user experience and product competitiveness.

[0065] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example" or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in the present specification.

[0066] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. An air spring, characterized in that , comprising: a piston assembly, a base and an air bag connected between the piston assembly and the base, wherein a main chamber is defined between the piston assembly, the base and the air bag; The piston assembly comprises: a piston body connected to the airbag, wherein a sub-chamber is defined in the piston body; Solenoid valves, the solenoid valves being provided on the piston body, the number of the solenoid valves corresponding to the number of the sub-cavities, the solenoid valves being used to control whether the corresponding sub-cavities are in communication with the main chamber; A plurality of sub-chambers are defined in the piston body, and each sub-chamber has a different volume; The solenoid valve is arranged along the radial direction of the air spring; The piston body includes a piston cover and a piston wall, wherein the piston wall extends from one end of the piston cover toward the base, and the piston wall includes an inner wall and an outer wall connected to each other, wherein the outer wall is arranged radially outward of the inner wall; The outer wall is connected to the inner wall at the bottom of the piston body to define a space, and the inner wall and the outer wall are connected by at least one partition plate to divide the space between the inner wall and the outer wall into a plurality of sub-chambers, and the piston cover is provided with a solenoid valve accommodating chamber connected to the main chamber, and the solenoid valve is fixed in the solenoid valve accommodating chamber, and the inner wall and the outer wall are sealed and connected at one end facing the base, and the inner wall and the outer wall are covered by the piston cover at one end facing the piston cover, and the piston cover is provided with a gas connecting hole connecting the sub-chamber and the solenoid valve accommodating chamber, and the valve port of the solenoid valve is used to control the opening and closing of the gas connecting hole, thereby controlling whether the sub-chamber is connected to the main chamber.

2. The air spring according to claim 1, wherein: The airbag is connected to the outer wall. The air spring further comprises a piston truncated sleeve, which is arranged radially outside the outer wall, and at least a portion of the piston truncated sleeve is located between the airbag and the outer wall.

3. The air spring according to claim 1, wherein: It also includes an upper cover, which is arranged on a side of the piston assembly away from the base, and the upper cover is rotatably connected to the piston assembly.

4. The air spring according to claim 1, wherein: The piston assembly is further provided with an air intake joint, which is communicated with the main chamber.

5. An air suspension assembly, characterized in that: The invention comprises an air spring according to any one of claims 1 to 4.

6. A vehicle characterized by , including the air suspension assembly according to claim 5.

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