Air spring, suspension system and vehicle

Abstract

The invention discloses an air spring, a suspension system and a vehicle. The air spring comprises a main cavity and an auxiliary cavity, partition pieces are arranged in the auxiliary cavity so as to divide the auxiliary cavity into a plurality of sub-cavities, and any one or more of the sub-cavities are configured to be selectively communicated with the main cavity. According to the air spring, the one or more branch cavities are arranged to communicate with the main cavity, adjustment of multiple rigidities of the air spring can be achieved, the adjustment modes of the rigidities of the air spring are diversified, and then the air spring meets multiple use requirements.

Description

Technical Field

[0001] This invention relates to the field of automotive technology, and more specifically, to an air spring, a suspension system having the air spring, and a vehicle having the suspension system. Background Technology

[0002] An air spring consists of a main chamber and a secondary chamber. The stiffness of the air spring is adjusted by connecting or disconnecting the secondary chamber from the main chamber. However, the method of adjusting the stiffness of an air spring is limited and cannot meet a variety of usage requirements. Summary of the Invention

[0003] The present invention aims to at least partially solve one of the aforementioned technical problems in the prior art. To this end, the present invention proposes an air spring with diverse methods for adjusting its stiffness, capable of meeting various application requirements.

[0004] The present invention further proposes a suspension system having the aforementioned air spring.

[0005] The present invention also proposes a vehicle having the above-described suspension system.

[0006] An air spring according to an embodiment of the present invention includes a main chamber and a secondary chamber. A partition is provided in the secondary chamber to divide the secondary chamber into a plurality of sub-chambers. Any one or more of the plurality of sub-chambers are configured to selectively communicate with the main chamber.

[0007] According to an embodiment of the present invention, by configuring one or more sub-chambers to communicate with the main chamber, the air spring can achieve various stiffness adjustments, thereby diversifying the adjustment methods of the air spring stiffness and enabling the air spring to meet various usage requirements.

[0008] According to some embodiments of the present invention, the air spring further includes a driving member and a connecting member, the connecting member being disposed between the secondary chamber and the main chamber, and the connecting member having a first connecting hole, the driving member being used to drive the connecting member to move so that the first connecting hole communicates with at least one of the secondary chambers.

[0009] According to some embodiments of the present invention, the air spring further includes a driving member and a connecting member, the connecting member being disposed between the secondary chamber and the main chamber, and the connecting member having a first connecting hole, and the secondary chamber having a second connecting hole, the driving member being used to drive the connecting member to move so that the first connecting hole corresponds to or partially corresponds to the second connecting hole in at least one of the secondary chambers.

[0010] According to some embodiments of the present invention, there are multiple first connecting holes, and the multiple first connecting holes and the multiple second connecting holes of the sub-chambers are configured to communicate with each other in a one-to-one correspondence.

[0011] According to some embodiments of the present invention, the number of the first connecting holes is M, and the number of the sub-chambers is N, where M≥N≥2.

[0012] According to some embodiments of the present invention, a plurality of the first communication holes are configured to communicate with n of the sub-chambers, where n≤N.

[0013] According to some embodiments of the present invention, N≥3.

[0014] According to some embodiments of the present invention, at least two of the compartments have different volumes.

[0015] According to some embodiments of the present invention, the separator is provided in multiple forms.

[0016] According to some embodiments of the present invention, the air spring further includes a support member and an air bladder, the air bladder being connected to the support member, a portion of the main chamber being formed within the support member, and another portion of the main chamber being formed within the air bladder.

[0017] According to some embodiments of the present invention, the air spring further includes a sealing structure having a sealing channel, wherein the first communicating hole is adapted to communicate with the chamber through the sealing channel.

[0018] According to some embodiments of the present invention, the sealing structure includes an outer structural member, an inner structural member, a sealing spring, and a sealing membrane. The sealing channel is formed inside the outer structural member. A guide hole extending axially along the sealing structure is provided inside the outer structural member. The inner structural member is axially movable within the guide hole. The sealing membrane is installed on the outer structural member, and the end of the inner structural member abuts against the sealing membrane. One end of the sealing spring abuts against the outer structural member or the support member, and the other end of the sealing spring abuts against the inner structural member, so that the sealing membrane is tightly attached to the connecting member.

[0019] According to some embodiments of the present invention, the support member includes a support column, and the connecting member is sleeved on the support column by a bearing so that the connecting member can rotate about the axis of the support column.

[0020] According to some embodiments of the present invention, the support member includes a support platform, the support platform being disposed opposite to the connecting member, and a thrust bearing being provided between the connecting member and the support platform.

[0021] According to some embodiments of the present invention, the driving member includes a motor and a driving gear, the motor being used to drive the driving gear to rotate, and the connecting member including a driven gear, the driven gear meshing with the driving gear for transmission; or, the driving member includes a motor and a worm, the motor being used to drive the worm to rotate, and the connecting member including a worm wheel, the worm wheel meshing with the worm for transmission.

[0022] According to some embodiments of the present invention, each of the sub-chambers has a second connecting hole, and the second connecting holes corresponding to the plurality of sub-chambers are evenly distributed in the circumference of the air spring, M>N; the connecting member has an initial position and a partially connected position, in the initial position, the second connecting holes of the plurality of sub-chambers are all connected to the corresponding first connecting holes; in the partially connected position, n sub-chambers are connected to the corresponding first connecting holes, n<N.

[0023] According to some embodiments of the present invention, the connecting member is provided with a plurality of first connecting holes, and the central angle between two adjacent first connecting holes includes one or more of 15°, 30°, 45°, and 60°.

[0024] According to a second aspect of the present invention, the suspension system includes the air spring described above.

[0025] According to the suspension system of the present invention, the air spring can achieve multiple stiffness adjustments by configuring one or more sub-chambers to communicate with the main chamber, thereby diversifying the adjustment methods of the air spring stiffness and enabling the air spring to meet various usage requirements.

[0026] A vehicle according to a third aspect of the present invention includes the suspension system described above.

[0027] According to an embodiment of the present invention, the air spring of the suspension system can achieve multiple stiffness adjustments by configuring one or more sub-chambers to communicate with the main chamber, thereby diversifying the adjustment methods of the air spring stiffness and enabling the air spring to meet various usage requirements.

[0028] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of an air spring according to an embodiment of the present invention;

[0030] Figure 2 yes Figure 1 A magnified view of a portion of point A in the middle;

[0031] Figure 3 yes Figure 1 A magnified view of a portion of point B in the middle;

[0032] Figure 4 This is a three-dimensional schematic diagram of the upper support base;

[0033] Figure 5 This is a three-dimensional schematic diagram of the upper cover of the upper support base;

[0034] Figure 6 This is a three-dimensional schematic diagram of the drive component mounted on the lower cover of the upper support base;

[0035] Figure 7 This is a schematic diagram of a connecting member according to an embodiment of the present invention;

[0036] Figure 8 yes Figure 7 A cross-sectional view of the connecting component shown;

[0037] Figure 9 This is a schematic diagram of a driving component according to an embodiment of the present invention;

[0038] Figure 10 This is a schematic diagram of an air spring according to an embodiment of the present invention;

[0039] Figure 11 This is a schematic diagram of a connecting member according to another embodiment of the present invention;

[0040] Figure 12 This is a schematic diagram showing the arrangement angles of multiple second connecting holes;

[0041] Figure 13 This is a schematic diagram of the connecting parts in their initial position;

[0042] Figure 14 This is a schematic diagram of the connecting component in a position rotated 15° counterclockwise;

[0043] Figure 15 This is a schematic diagram of the connecting parts being rotated 30° counterclockwise;

[0044] Figure 16 This is a schematic diagram of the connecting parts being rotated 45° counterclockwise;

[0045] Figure 17 This is a schematic diagram of the connecting component at a position rotated 15° clockwise;

[0046] Figure 18 This is a schematic diagram of the connecting component at a position rotated 30° clockwise;

[0047] Figure 19 This is a schematic diagram of the connecting component at a position rotated 45° clockwise;

[0048] Figure 20 This is a schematic diagram of the connecting component in a position rotated 60° clockwise;

[0049] Figure 21 This is a schematic diagram of a suspension system according to an embodiment of the present invention;

[0050] Figure 22 This is a schematic diagram of a vehicle according to an embodiment of the present invention.

[0051] Figure label:

[0052] Vehicle 1000, Suspension System 100, Air Spring 10, Support Component 1, Upper Support Seat 1a, Piston 1b, Partition Plate 11, Second Connecting Hole 111, First Type Second Connecting Hole 1111, Second Type Second Connecting Hole 1112, Third Type Second Connecting Hole 1113, Main Chamber 12, Auxiliary Chamber 13, First Sub-Cavity 131, Second Sub-Cavity 132, Third Sub-Cavity 133, Upper Cover 14, Partition 141, Lower Cover 15, Support Column 16, Shoulder 161, Axial Retaining Ring 162, Support Platform 17. First limiting protrusion 171, welding stud 18, airbag 2, connecting part 3, first connecting hole 31, first type first connecting hole 311, second type first connecting hole 312, third type first connecting hole 313, driven gear 32, second limiting protrusion 33, sealing structure 4, outer structural part 41, guide hole 411, inner structural part 42, sealing spring 43, sealing membrane 44, sealing channel 45, driving part 5, motor 51, driving gear 52, bearing 6, thrust bearing 7, protective cylinder 8, dust cover 9. Detailed Implementation

[0053] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0054] In the description of this invention, the terms "first," "second," "primary," and "secondary" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first," "second," "primary," or "secondary" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0055] The following is combined with Figures 1-22 The air spring 10, the suspension system 100 having the air spring 10, and the vehicle 1000 having the suspension system 100 are described in detail according to embodiments of the present invention.

[0056] Reference Figure 1 , Figure 4 As shown, the air spring 10 according to an embodiment of the present invention includes a main chamber 12 and a secondary chamber 13. A partition 141 is provided within the secondary chamber 13 to divide it into multiple sub-chambers. Any one or more of these sub-chambers are configured to selectively communicate with the main chamber 12. Specifically, one sub-chamber can be connected to the main chamber 12, while the remaining sub-chambers are not connected; all sub-chambers can be simultaneously connected to the main chamber 12; or some sub-chambers can be simultaneously connected to the main chamber 12, while others are not connected. This allows for various stiffness variations in the air spring 10, thereby meeting different application requirements.

[0057] Two adjacent chambers are separated by a partition 141, preventing communication between them. Optionally, the partition 141 can be a rigid partition or a flexible partition.

[0058] According to an embodiment of the present invention, the air spring 10 can achieve multiple stiffness adjustments by configuring one or more sub-chambers to communicate with the main chamber 12, thereby diversifying the stiffness adjustment methods of the air spring 10 and enabling the air spring 10 to meet various usage requirements.

[0059] In some embodiments of the present invention, the air spring 10 further includes a driving member 5 and a connecting member 3. The connecting member 3 is disposed between the secondary chamber 13 and the main chamber 12, and a first connecting hole 31 is provided on the connecting member 3. The driving member 5 is used to drive the connecting member 3 to move so that the first connecting hole 31 communicates with at least one sub-chamber. When the first connecting hole 31 communicates with the sub-chamber, the sub-chamber can communicate with the main chamber 12.

[0060] In some embodiments of the present invention, reference is made to... Figure 1 , Figures 7-8 As shown, the air spring 10 also includes a driving member 5 and a connecting member 3. The connecting member 3 is disposed between the secondary chamber 13 and the main chamber 12, and has a first connecting hole 31. A second connecting hole 111 is provided in the secondary chamber. The driving member 5 is used to drive the connecting member 3 to move so that the first connecting hole 31 corresponds or partially corresponds with the second connecting hole 111 in at least one secondary chamber. When the first connecting hole 31 corresponds or partially corresponds with the second connecting hole 111, the secondary chamber with the second connecting hole 111 can be connected to the main chamber 12.

[0061] In some embodiments of the present invention, reference is made to... Figure 4As shown, the secondary chamber 13 includes multiple sub-chambers, each with a second connecting hole 111. This allows each sub-chamber to connect with the main chamber 12 when its second connecting hole 111 is connected to the first connecting hole 31. When there are enough sub-chambers, the stiffness of the air spring 10 can be adjusted infinitely or nearly infinitely.

[0062] Reference Figure 1 , Figure 4 , Figures 7-8 As shown, when the connecting member 3 moves to a position where the first connecting hole 31 corresponds to or partially corresponds to the second connecting hole 111, the first connecting hole 31 and the second connecting hole 111 are connected. The connecting member 3 can connect the sub-chamber corresponding to the second connecting hole 111 to the main chamber 12. Air can circulate between the main chamber 12 and the sub-chamber, increasing the air chamber volume inside the air spring 10 and reducing its stiffness. When the connecting member 3 moves to a position where the first connecting hole 31 and the second connecting hole 111 are completely misaligned, the sub-chamber corresponding to the second connecting hole 111 is isolated from the main chamber 12. Air cannot circulate between the main chamber 12 and the sub-chamber, reducing the air chamber volume inside the air spring 10 and increasing its stiffness. By changing the air chamber volume inside the air spring 10, the stiffness of the air spring 10 can be changed, thus adapting to different working conditions.

[0063] Optionally, the connecting member 3 is disposed within the main chamber 12 and / or the auxiliary chamber 13. Specifically, the connecting member 3 can be disposed only within the main chamber 12, only within the auxiliary chamber 13, or in both the main chamber 12 and the auxiliary chamber 13. The position of the connecting member 3 is flexible, allowing for convenient placement in suitable locations according to actual needs, thus offering a high degree of design freedom. Figure 1 In the example, the connecting element 3 is located inside the main chamber 12.

[0064] After the air spring 10 is applied to the vehicle 1000, different stiffnesses can be selected for different operating conditions. For example, when turning, to improve handling and reduce body roll, the stiffness of the air spring 10 needs to be increased. For instance, the connecting member 3 is moved so that the first connecting hole 31 is completely offset from the second connecting hole 111 of the sub-chamber, closing the air passage between the main chamber 12 and the sub-chamber, reducing the air chamber volume, and thus increasing the stiffness of the air spring 10. When the road surface is flat and the vehicle speed is slow, the comfort mode is selected, and the stiffness of the air spring 10 needs to be reduced. That is, the connecting member 3 is moved so that the first connecting hole 31 is connected to at least one second connecting hole 111, opening the air passage between the main chamber 12 and the corresponding sub-chamber, increasing the air chamber volume, and thus reducing the stiffness of the air spring 10. Furthermore, when the air spring 10 is used in the whole vehicle, adjusting the stiffness of the air spring 10 can make the air spring 10 adapt to different road conditions, such as the flat road conditions of urban roads and the bumpy road conditions of mountain roads, ensuring good handling stability and ride comfort of the vehicle 1000, which is conducive to improving the user's driving experience.

[0065] The plane perpendicular to the axis of the connecting member 3 is called the reference plane. It can be understood that "the first connecting hole 31 corresponds or partially corresponds to the second connecting hole 111" means that the projection of the first connecting hole 31 on the reference plane and the projection of the second connecting hole 111 on the reference plane overlap at least partially. "The first connecting hole 31 and the second connecting hole 111 are completely offset" means that the projection of the first connecting hole 31 on the reference plane and the projection of the second connecting hole 111 on the reference plane have no overlapping area.

[0066] Optionally, the shape of the first connecting hole 31 can be as follows: Figure 7 , Figures 12-20 The circle shown can also be like... Figure 11 The triangle shown can also be other shapes not shown in the figure, such as rhombus, trapezoid, etc.

[0067] According to an embodiment of the present invention, the air spring 10 can achieve communication between the main chamber 12 and the sub-chamber by moving the connecting member 3 to connect the first connecting hole 31 and the second connecting hole 111, and can achieve mutual isolation between the main chamber 12 and the sub-chamber by moving the connecting member 3 to completely offset the first connecting hole 31 and the second connecting hole 111, thereby achieving adjustment of the stiffness of the air spring 10. In related technologies, air springs typically use a stiffness switching valve to achieve communication or disconnection between the sub-chamber and the main chamber. Due to the presence of the stiffness switching valve, the air spring has a complex structure and a large volume, which limits its application in vehicles. The air spring 10 according to the embodiment of the present invention uses a movable connecting member 3 to replace the function of the stiffness switching valve in related technologies, which simplifies the structure of the air spring 10 and helps to improve the reliability of the air spring 10.

[0068] In some embodiments of the present invention, there are multiple first connecting holes 31, and the multiple first connecting holes 31 and the multiple second connecting holes 111 of the sub-chambers are configured to communicate with each other in a one-to-one correspondence. For example, in Figure 4 , Figure 7 In the example shown, there are 12 first connecting holes 31 and three sub-chambers. Each sub-chamber has a second connecting hole 111, which can be connected to or completely offset from the first connecting holes 31.

[0069] In some embodiments of the present invention, the connecting member 3 has a plurality of first connecting holes 31 corresponding to each sub-chamber, and the connecting member 3 has a fully connected state in which all sub-chambers are connected to the main chamber 12, and a partially connected state in which a portion of the sub-chambers are connected to the main chamber 12. (Refer to...) Figure 4 , Figure 7 , Figures 11-12 As shown, the secondary chamber 13 includes three sub-chambers: a first sub-chamber 131, a second sub-chamber 132, and a third sub-chamber 133. The area on the connecting member 3 corresponding to the first sub-chamber 131 is designated as the first region C1, the area corresponding to the second sub-chamber 132 is designated as the second region C2, and the area corresponding to the third sub-chamber 133 is designated as the third region C3. The first region C1 is a fan-shaped area defined by dashed lines L1-L2, the second region C2 is a fan-shaped area defined by dashed lines L2-L3, and the third region C3 is a fan-shaped area defined by dashed lines L3-L1. The first connecting hole 31 in the first region C1 corresponding to the first sub-chamber 131 is a first-type first connecting hole 311; the first connecting hole 31 in the second region C2 corresponding to the second sub-chamber 132 is a second-type first connecting hole 312; and the first connecting hole 31 in the third region C3 corresponding to the third sub-chamber 133 is a third-type first connecting hole 313.

[0070] Reference Figure 11 As shown, there are multiple first-type first connecting holes 311, multiple second-type first connecting holes 312, and multiple third-type first connecting holes 313. The multiple first-type first connecting holes 311 are arranged at unequal intervals along the circumference of the connecting member 3, the multiple second-type first connecting holes 312 are arranged at unequal intervals along the circumference of the connecting member 3, and the multiple third-type first connecting holes 313 are arranged at unequal intervals along the circumference of the connecting member 3. The first-type first connecting holes 311, the second-type first connecting holes 312, and the third-type first connecting holes 313 can be distributed along the same circular path.

[0071] Reference Figures 4-5 As shown, the second connecting hole 111 corresponding to the first sub-chamber 131 is a first type of second connecting hole 1111, the second connecting hole 111 corresponding to the second sub-chamber 132 is a second type of second connecting hole 1112, and the second connecting hole 111 corresponding to the third sub-chamber 133 is a third type of second connecting hole 1113.

[0072] Optionally, each sub-chamber has one or more second connecting holes 111. When the second connecting hole 111 of a sub-chamber communicates with the first connecting hole 31, communication between the sub-chamber and the main chamber 12 is achieved. In some embodiments of the invention, each sub-chamber has one second connecting hole 111, and the second connecting holes 111 corresponding to multiple sub-chambers are evenly distributed circumferentially on the air spring 10. Figures 4-5 In the example, there is one of each of the first type of second connecting hole 1111, the second type of second connecting hole 1112, and the third type of second connecting hole 1113. These three connecting holes are evenly distributed at 120° intervals around the circumference of the air spring 10. M > N, meaning the number of first connecting holes 31 is greater than the number of second connecting holes 111.

[0073] In some embodiments not shown in the figure, each sub-chamber may have multiple second communication holes 111.

[0074] In some embodiments of the present invention, the connecting member 3 has an initial position and a partially connected position. In the initial position, such as... Figure 13 As shown, the second connecting holes 111 of the multiple compartments are all connected to the corresponding first connecting holes 31; at partial connection locations, such as... Figures 14-20 As shown, n sub-chambers are connected to the corresponding first connecting hole 31, where n < N. That is, at the partially connected positions, some sub-chambers are connected to the corresponding first connecting hole 31, while other sub-chambers are not connected to the first connecting hole 31.

[0075] Figure 7 and Figures 11-12 The upper surface of the connecting member 3 is shown. The upper surface of the connecting member 3 is mainly divided into three regions: region C1, region C2, and region C3. These three regions correspond to three sub-chambers. The connecting member 3 has at least eight positions during its movement, corresponding to angles as follows: Figure 7 , Figures 11-12 As shown, the hole position indicated by the arrow indicates that the sub-chamber is connected to the main chamber 12 at this position, while the other solid positions indicated by the arrow (non-hole positions) indicate that the sub-chamber is not connected to the main chamber 12 at this position.

[0076] Reference Figures 12-20 As shown, the projection positions of the three second connecting holes 111 on the connecting member 3 are as follows: Figure 7 , Figures 11-20 As shown by the arrow, the main chamber 12 can be disconnected from different sub-chambers by the drive component 5, which in turn drives the connecting component 3 to rotate at different angles, thereby changing the volume of the air spring 10 and thus changing the stiffness of the air spring 10. The multi-chamber air spring 10 of the present invention can provide a variety of stiffness gradients.

[0077] The connecting member 3 is provided with a plurality of first connecting holes 31, and the central angle between two adjacent first connecting holes 31 along the circumferential direction includes one or more of 15°, 30°, 45°, and 60°. (Refer to...) Figure 12 As shown, the connecting member 3 has 12 first connecting holes 31, and the central angle between two adjacent first connecting holes 31 can be 15°, 30°, 45°, or 60°. Taking three sub-chambers as an example, by rotating the connecting member 3 by different angles, eight different stiffnesses can be provided. Specifically:

[0078] (1) When the connecting member 3 is in the initial design (stiffness mode 1) position, such as Figure 4 and Figure 13 As shown, all three sub-chambers are connected to the main chamber 12. The first type of second connecting hole 1111 of the first sub-chamber 131 is connected to the first connecting hole 31 at the corresponding position V1-1. The second type of second connecting hole 1112 of the second sub-chamber 132 is connected to the first connecting hole 31 at the corresponding position V2-1. The third type of second connecting hole 1113 of the third sub-chamber 133 is connected to the first connecting hole 31 at the corresponding position V3-1. The main chamber 12 is connected to all three sub-chambers. The volume of the main chamber 12 is V0, the volume of the first sub-chamber 131 is V1, the volume of the second sub-chamber 132 is V2, and the volume of the third sub-chamber 133 is V3. At this time, the volume of the chambers participating in the operation is V0+V1+V2+V3, which is the fully open state of the chambers.

[0079] (2) The drive component 5 is activated, causing the connecting component 3 to rotate counterclockwise by 15° (stiffness mode 2). The drive component 5 then stops, and the connecting component 3 reaches the desired position. Figure 14 The positions shown are denoted as V1-2 / V2-2 / V3-2. At this time, the first type of second connecting hole 1111 of the first sub-chamber 131 is connected to the first connecting hole 31 at the corresponding position V1-2, the second type of second connecting hole 1112 of the second sub-chamber 132 is connected to the first connecting hole 31 at the corresponding position V2-2, and the third type of second connecting hole 1113 of the third sub-chamber 133 is not connected to the corresponding position V3-2. The volume of the chambers involved in the operation is V0+V1+V2.

[0080] (3) The driving component 5 drives the connecting component 3 to rotate clockwise / counterclockwise by different angles, disconnecting the main chamber 12 from different sub-chambers, changing the volume of the air spring 10, and thus changing the stiffness of the air spring 10. The positions of the connecting component 3 in stiffness modes 3-stiffness modes 8 are shown in [reference needed]. Figures 15-20 .

[0081] The three chambers can provide eight different stiffness states, as summarized in Table 1.

[0082] Table 1 shows the connection between the three sub-chambers and the main chamber 12.

[0083]

[0084] Wherein, V0 represents the volume of the main chamber 12, V1 represents the volume of the first sub-chamber 131, V2 represents the volume of the second sub-chamber 132, V3 represents the volume of the third sub-chamber 133, "open" means that the corresponding sub-chamber is connected to the main chamber 12, and "closed" means that the corresponding sub-chamber is isolated from the main chamber 12.

[0085] In some embodiments of the present invention, the number of first connecting holes 31 is M, and the number of chambers is N, where M ≥ N ≥ 2. For example, in Figure 4 In the example, M = 12 and N = 3. In other embodiments, M can also be other values, such as 6, 9, 15, 18, etc., and N can also be other values, such as 2, 4, 5, 8, etc. The number of first connecting holes 31 is not less than the number of chambers, thereby ensuring that the chambers can be connected to different first connecting holes 31 when the connecting member 3 is rotated at a certain angle.

[0086] In some embodiments of the present invention, a plurality of first communication holes 31 are configured to communicate with n sub-chambers, where n ≤ N. For example, in one state, referring to... Figures 14-20 As shown, some sub-chambers have second connecting holes 111 that are connected to the main chamber 12 through corresponding first connecting holes 31, while the second connecting holes 111 of other sub-chambers are completely offset from the first connecting holes 31, and these sub-chambers are not connected to the main chamber 12.

[0087] In some embodiments of the present invention, N ≥ 3. That is, the number of chambers N is at least three, for example, N can be 3, 4, 5 or more, thereby making the stiffness adjustment range of the air spring 10 wider.

[0088] In some embodiments of the present invention, at least two sub-chambers have different volumes. Therefore, when sub-chambers with different volumes are connected to the main chamber 12, the air spring 10 can have different stiffnesses, further enriching the methods for adjusting the stiffness of the air spring 10.

[0089] In other embodiments of the invention, all chambers have the same volume, which reduces the difficulty of manufacturing and adjusting the stiffness of the air spring 10.

[0090] In some embodiments of the invention, the partition 141 is provided in multiple ways, thereby dividing the sub-chamber 13 into multiple sub-chambers.

[0091] In some alternative embodiments of the invention, the secondary chamber 13 may have only one sub-chamber.

[0092] In some embodiments of the present invention, the air spring 10 further includes a support member 1 and an airbag 2, the airbag 2 being connected to the support member 1, a portion of the main chamber 12 being formed in the support member 1, and another portion of the main chamber 12 being formed in the airbag 2.

[0093] Support member 1 includes a partition plate 11, which divides the internal space of the air spring 10 into at least a main chamber 12 and a secondary chamber 13. The secondary chamber 13 is further divided into multiple sub-chambers by partition member 141. The main chamber 12 is located on one side of the partition plate 11, and the secondary chamber 13 is located on the other side of the partition plate 11. Figures 1-2 As shown, the main chamber 12 is located below the partition plate 11, the secondary chamber 13 is located above the partition plate 11, and the partition member 141 is connected to the partition plate 11 and extends upward. The partition plate 11 has a second connecting hole 111, which connects the spaces on both sides of the partition plate 11. (Refer to...) Figures 4-5 Each compartment is provided with a second connecting hole 111.

[0094] The airbag 2 is connected to the support member 1. The airbag 2 is used to store gas, and its interior has an airbag space that forms part of and is connected to the main chamber 12. The airbag 2 is made of a material with certain elastic deformation properties, such as rubber or silicone. When the gas in the main chamber 12 is compressed, the airbag 2 can deform, thereby providing nonlinear elastic force and achieving the effects of cushioning and vibration reduction.

[0095] In some embodiments of the present invention, the air spring 10 further includes a sealing structure 4 having a sealing channel 45, wherein the first connecting hole 31 is adapted to communicate with the chamber through the sealing channel 45. (See also...) Figures 1-2 As shown, the sealing structure 4 is disposed between the connecting member 3 and the partition plate 11, and the first connecting hole 31 and the second connecting hole 111 are adapted to be connected through the sealing channel 45. The sealing structure 4 can prevent internal leakage between the main chamber 12 and the sub-chamber of the air spring 10, so that the stiffness of the air spring 10 is clearly distinguished when the connection state between the sub-chamber and the main chamber 12 is changed.

[0096] In some embodiments of the present invention, the sealing structure 4 is fixed to the partition plate 11, and the sealing channel 45 is always in communication with the second connecting hole 111. When assembling the air spring 10, the sealing structure 4 and the support member 1 can be assembled first, and then the assembly of the sealing structure 4 and the support member 1 can be assembled with other components. Since the sealing channel 45 is always in communication with the second connecting hole 111, when the first connecting hole 31 is in communication with the sealing channel 45, the first connecting hole 31 and the second connecting hole 111 can be connected; when the first connecting hole 31 is isolated from the sealing channel 45, the first connecting hole 31 and the second connecting hole 111 are also isolated.

[0097] Similarly, the plane perpendicular to the axis of the connecting member 3 is the reference plane. "The first connecting hole 31 is connected to the sealing channel 45" means that the projection of the first connecting hole 31 on the reference plane and the projection of the sealing channel 45 on the reference plane overlap at least partially. "The first connecting hole 31 is isolated from the sealing channel 45" means that the projection of the first connecting hole 31 on the reference plane and the projection of the sealing channel 45 on the reference plane have no overlapping area.

[0098] In some embodiments of the present invention, reference is made to... Figures 1-2 , Figure 10 As shown, the sealing structure 4 is a membrane sealing structure, including an outer structural member 41, an inner structural member 42, a sealing spring 43, and a sealing membrane 44. A sealing channel 45 is formed inside the outer structural member 41. A guide hole 411 is provided inside the outer structural member 41, extending axially along the sealing structure 4. The inner structural member 42 is axially movable within the guide hole 411. The sealing membrane 44 is installed on the outer structural member 41, and the end of the inner structural member 42 abuts against the sealing membrane 44. One end of the sealing spring 43 abuts against the outer structural member 41 or the support member 1, and the other end abuts against the inner structural member 42, so that the sealing membrane 44 adheres tightly to the connecting member 3. By using the sealing spring 43 to control the compression of the sealing membrane 44, the reliability of the sealing membrane 44 adhering tightly to the connecting member 3 can be guaranteed. The sealing spring 43 always applies an elastic force to the sealing membrane 44 to ensure that the sealing membrane 44 adheres tightly to the connecting member 3.

[0099] The outer structural member 41 is generally cylindrical, and the inner sidewall of the outer structural member 41 defines a sealing channel 45. In some embodiments, the inner structural member 42, the sealing spring 43, and the sealing membrane 44 are first assembled with the outer structural member 41, and then the outer structural member 41 is fixedly connected to the support member 1.

[0100] In some embodiments of the present invention, reference is made to... Figures 1-3 As shown, the support member 1 includes a support column 16, and the connecting member 3 is sleeved on the support column 16 via a bearing 6, so that the connecting member 3 can rotate around the axis of the support column 16. By setting the bearing 6, it is beneficial to eliminate the negative impacts such as abnormal noise that may be caused by the rotation of the connecting member 3. At the same time, it reduces the friction force generated by the rotation, which helps to reduce the energy consumption of the drive member 5.

[0101] Reference Figures 2-3As shown, the support column 16 is also provided with a shoulder 161 and an axial retaining ring 162. The support column 16 has a retaining ring groove. The inner side of the axial retaining ring 162 is embedded in the retaining ring groove, and the outer side of the axial retaining ring 162 protrudes from the support column 16. One end of the bearing 6 is in a stop-fitting engagement with the shoulder 161, and the other end of the bearing 6 is in a stop-fitting engagement with the axial retaining ring 162. The shoulder 161 and the axial retaining ring 162 work together to limit the axial position of the bearing 6 and prevent the bearing 6 from falling off the support column 16.

[0102] It is understandable that the support column 16 is a stepped shaft, and the "shoulder 161" of the support column 16 refers to the part on the support column 16 where the cross-sectional dimensions change. The shoulder 161 can position one side of the inner ring of the bearing 6 in the axial direction, and the axial retaining ring 162 can position the other side of the inner ring of the bearing 6 in the axial direction. The inner ring of the bearing 6 is sandwiched between the shoulder 161 and the axial retaining ring 162.

[0103] Specifically, the axial retaining ring 162 can be a snap ring, which is a non-full-circle annular structure. The snap ring opening can be adjusted by external force to facilitate the snap ring being engaged in or removed from the retaining ring groove.

[0104] In some embodiments of the present invention, reference is made to... Figures 1-3 As shown, the support member 1 includes a support platform 17, which is disposed opposite to the connecting member 3. A thrust bearing 7 is provided between the connecting member 3 and the support platform 17. By providing the thrust bearing 7, it is beneficial to eliminate the negative impacts such as abnormal noise that may be caused by the rotation of the connecting member 3. At the same time, it reduces the friction force generated by the rotation, which helps to reduce the energy consumption of the drive member 5.

[0105] Reference Figures 2-3 As shown, the support platform 17 is provided with a first limiting protrusion 171, which is used to position one radial side of the thrust bearing 7. The connecting member 3 is provided with a second limiting protrusion 33, which is used to position the other radial side of the thrust bearing 7. (Refer to...) Figures 2-3 As shown, the first limiting protrusion 171 positions the thrust bearing 7 radially outward, and the second limiting protrusion 33 positions the thrust bearing 7 radially inward.

[0106] In some embodiments of the present invention, reference is made to... Figures 1-2 , Figure 6 , Figure 9 As shown, the driving member 5 is disposed within the main chamber 12, and the driving member 5 is used to drive the connecting member 3 to rotate around the central axis of the connecting member 3. Thus, the driving member 5 can drive the connecting member 3 to a position where the sub-chamber is connected to the main chamber 12, or drive the connecting member 3 to a position where the sub-chamber is isolated from the main chamber 12.

[0107] In some embodiments of the present invention, the driving member 5 includes a motor 51 and a driving gear 52, the motor 51 driving the driving gear 52 to rotate, and the connecting member 3 includes a driven gear 32, which meshes with the driving gear 52 for transmission. (See reference...) Figures 1-2 , Figure 6 , Figure 9 As shown, the driving gear 52 is mounted on the output shaft of the motor 51. When the output shaft of the motor 51 rotates, it drives the driving gear 52 to rotate. When the driving gear 52 rotates, it drives the driven gear 32 to rotate. The driven gear 32 is disposed on the outer circumferential surface of the connecting member 3. In this way, when the driven gear 32 rotates, it can drive the connecting member 3 to rotate synchronously, thereby making the first connecting hole 31 connected to the second connecting hole 111 or completely offset. At this time, the axis of the output shaft of the motor 51 can be aligned with the axis of the air spring 10, for example, both can be arranged vertically, making full use of vertical space.

[0108] Alternatively, in some embodiments of the present invention, the driving component 5 includes a motor 51 and a worm gear. The motor 51 drives the worm gear to rotate, and the connecting component 3 includes a worm wheel that meshes with the worm gear for transmission. Specifically, the worm gear is connected to the output shaft of the motor 51. When the output shaft of the motor 51 rotates, it drives the worm gear to rotate, and when the worm gear rotates, it drives the worm wheel to rotate. The worm wheel is disposed on the outer circumferential surface of the connecting component 3. In this way, when the worm wheel rotates, it can drive the connecting component 3 to rotate synchronously, thereby making the first connecting hole 31 connected to or completely offset from the second connecting hole 111. At this time, the axis of the output shaft of the motor 51 can be perpendicular to the axis of the air spring 10. For example, the axis of the air spring 10 is arranged vertically, and the axis of the output shaft of the motor 51 is arranged horizontally, making full use of the horizontal space.

[0109] In some other embodiments of the present invention, the driving member 5 includes a motor 51 and some other types of transmission mechanisms, such as belts, chains, etc., to transmit the driving force of the motor 51 to the connecting member 3, thereby driving the connecting member 3 to rotate.

[0110] Optionally, there is one motor 51. The rotation angle of the connecting member 3 is controlled by one motor 51 to realize the connection or disconnection between multiple sub-chambers and the main chamber 12, change the volume of gas involved in the operation, and thus realize the function of variable stiffness of air spring 10.

[0111] In some embodiments of the present invention, reference is made to... Figure 1 As shown, the support member 1 is an upper support seat 1a. The upper support seat 1a has a body connection structure for connecting with the body. Through the body connection structure, the upper support seat 1a can be connected to the body, thereby realizing the connection between the air spring 10 and the body.

[0112] Optionally, in some embodiments of the present invention, reference is made to... Figure 1As shown, the vehicle body connection structure is a welded stud 18. The upper support seat 1a is provided with one or more welded studs 18, and the upper support seat 1a is fixedly connected to the frame of the vehicle 1000 through the welded studs 18.

[0113] Figures 1-3 The diagram shows one of the sub-chambers connected to the main chamber 12. Motor 51 starts and controls the rotation of the drive gear 52. The drive gear 52 meshes with the driven gear 32 on the outer circumference of the connecting member 3. As the drive gear 52 rotates, it drives the connecting member 3 to rotate. When the connecting member 3 rotates to a certain position, motor 51 stops, and the position of the connecting member 3 reaches the desired position. Figures 1-3 As shown: Figure 2 In the middle, the connecting member 3 has a first connecting hole 31, the sealing structure 4 has a sealing channel 45, and the support member 1 has a second connecting hole 111. The first connecting hole 31, the sealing channel 45, and the second connecting hole 111 connect the main chamber 12 with a sub-chamber, changing the air chamber volume and thus changing the stiffness of the air spring 10; Figure 3 In this case, the connecting member 3 has no first connecting hole 31 at this position, and the main chamber 12 is not connected to the other auxiliary chamber 13.

[0114] According to an embodiment of the present invention, the air spring 10 connects or isolates the main chamber 12 from the sub-chambers via the driving member 5 and the connecting member 3. The driving member 5 and the connecting member 3 occupy relatively little space, reducing the spatial boundary of the multi-chamber air spring 10. This results in higher utilization of the air spring 10 in the vehicle and provides multiple stiffness gradients, significantly improving the applicability and functional completeness of the air spring 10. Furthermore, by rationally setting the position of the first connecting hole 31 on the connecting member 3, the control logic for changing the stiffness of the air spring 10 is simplified.

[0115] Reference Figure 21 As shown, the suspension system 100 according to a second aspect embodiment of the present invention includes the air spring 10 of the above embodiment.

[0116] According to an embodiment of the present invention, the suspension system 100 has an air spring 10 that can be adjusted in various ways by configuring one or more sub-chambers to communicate with the main chamber 12, thereby making the air spring 10 adjustable in various ways and thus enabling the air spring 10 to meet various usage requirements.

[0117] In some embodiments of the present invention, reference is made to... Figure 1As shown, the air spring 10 also includes a piston 1b. The upper support 1a has an opening. The first end (e.g., the upper end) of the airbag 2 is connected to the circumferential outer wall of the opening of the upper support 1a. The connection between the first end of the airbag 2 and the upper support 1a can be sealed using an auxiliary structure. The auxiliary structure can be a sealant, a sealing ring, or a clamp. The clamp tightens the airbag 2 onto the circumferential outer wall of the opening of the upper support 1a, facilitating the formation of the main chamber 12 as a sealed cavity for storing high-pressure gas. The second end (e.g., the lower end) of the airbag 2 is fixedly and sealed to the piston 1b. The inner cavity of the piston 1b is connected to the airbag space. In this way, the airbag space and the internal space of the piston 1b both participate in forming the main chamber 12, forming a complete air chamber.

[0118] In some embodiments of the present invention, reference is made to... Figure 1 As shown, the air spring 10 also includes a protective cylinder 8, the first end of the piston 1b extends into the protective cylinder 8, and the second end of the airbag 2 is connected to and sealed to the first end of the piston 1b.

[0119] In some embodiments of the present invention, the air spring 10 further includes a shock absorber (not shown in the figure). The shock absorber includes a housing and a telescopic rod. The telescopic rod and the housing are axially movable relative to each other. The second end of the piston 1b is connected to and sealed to the housing. One end of the housing can extend into the piston 1b. The positions of the piston 1b and the housing are relatively fixed. One end of the telescopic rod is fixedly connected to the upper support seat 1a. The other end of the telescopic rod extends into the housing. The housing can be connected to the wheel hub of the vehicle 1000. During the driving of the vehicle 1000, when the wheel hub of the vehicle 1000 encounters a bumpy road surface, the telescopic rod of the shock absorber slides relative to the housing, thereby further compressing the high-pressure gas in the main chamber 12 or causing the high-pressure gas to act on the airbag 2 to expand the airbag 2, thereby providing nonlinear elastic force to the vehicle 1000 frame and wheel hub to achieve the effect of shock absorption and buffering.

[0120] In some embodiments of the present invention, reference is made to... Figure 1 , Figures 4-6 As shown, the upper support 1a includes an upper cover 14 and a lower cover 15. A secondary chamber 13 is formed within the upper cover 14, and the lower cover 15 is connected to the upper cover 14. The airbag 2 is also connected to the lower cover 15. Optionally, the lower cover 15 and the upper cover 14 can be welded together to form a complete upper support 1a. The upper cover 14 includes a partition plate 11 and a partition member 141. The partition member 141 is connected to the partition plate 11, and by providing the partition member 141, the secondary chamber 13 inside the upper cover 14 is divided into multiple sub-chambers. Figures 4-5 In the example, the three partitions 141 cooperate with the partition plate 11 to divide the secondary chamber 13 inside the upper cover 14 into three sub-chambers. The three sub-chambers are the first sub-chamber 131, the second sub-chamber 132, and the third sub-chamber 133 mentioned above. (Refer to...) Figure 6As shown, the drive unit 5 can be installed in the lower cover 15.

[0121] Reference Figure 1 As shown, a dust cover 9 is provided at the end of the protective cylinder 8 away from the upper support 1a. The dust cover 9 is a corrugated sleeve with elastic telescopic function. When the shock absorber housing and piston 1b move along the telescopic rod, the dust cover 9 expands and contracts synchronously. The dust cover 9 can prevent dust and water, protect the piston 1b and part of the air bag 2, and prevent dust, liquid and debris from entering the space between the protective cylinder 8 and the piston 1b and contacting, contaminating or even damaging the piston 1b and air bag 2.

[0122] In some embodiments of the present invention, the air spring 10 further includes a shock absorber, the support member 1 is a piston, one end of the piston is connected to and sealed to the air bladder 2, and the other end of the piston is connected to and sealed to the housing of the shock absorber. A schematic diagram of the piston as the support member 1 is not shown in the figures; when the piston is the support member 1, its structure is similar to... Figure 1 The upper support seat 1a, which serves as the support member 1, is similar to the vibration damper connected to it. The vibration damper structure is the same as that mentioned in the above embodiment, and will not be described again here.

[0123] When the piston is used as support 1, the air spring 10 also includes an upper support seat, which has an upper support space and is connected to the air bladder space.

[0124] Reference Figure 22 As shown, a vehicle 1000 according to a third aspect embodiment of the present invention includes the suspension system 100 of the above embodiment.

[0125] According to an embodiment of the present invention, the air spring 10 of the vehicle 100 suspension system 10 can be configured to have one or more sub-chambers connected to the main chamber 12, thereby enabling the air spring 10 to adjust to various stiffnesses, making the adjustment methods of the air spring 10 more diverse, and thus enabling the air spring 10 to meet various usage requirements.

[0126] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0127] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0128] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0129] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An air spring (10), comprising a main chamber (12) and a secondary chamber (13), characterized in that, The sub-chamber (13) is provided with a partition (141) to divide the sub-chamber (13) into a plurality of sub-chambers, and any one or more of the plurality of sub-chambers are configured to selectively communicate with the main chamber (12).

2. The air spring (10) as claimed in claim 1, characterized in that, The air spring (10) further includes a driving member (5) and a connecting member (3). The connecting member (3) is disposed between the sub-chamber (13) and the main chamber (12), and the connecting member (3) is provided with a first connecting hole (31). The driving member (5) is used to drive the connecting member (3) to move so that the first connecting hole (31) communicates with at least one of the sub-chambers.

3. The air spring (10) as claimed in claim 1, characterized in that, The air spring (10) further includes a driving member (5) and a connecting member (3). The connecting member (3) is disposed between the secondary chamber (13) and the main chamber (12), and a first connecting hole (31) is provided on the connecting member (3). A second connecting hole (111) is provided in the secondary chamber. The driving member (5) is used to drive the connecting member (3) to move so that the first connecting hole (31) corresponds or partially corresponds with at least one second connecting hole (111) in the secondary chamber.

4. The air spring (10) as described in claim 3, characterized in that, There are multiple first connecting holes (31), and the multiple first connecting holes (31) and the multiple second connecting holes (111) of the sub-chambers are configured to be connected in a one-to-one correspondence.

5. The air spring (10) as described in claim 3, characterized in that, The number of the first connecting holes (31) is M, and the number of the sub-chambers is N, where M≥N≥2.

6. The air spring (10) as claimed in claim 5, characterized in that, Multiple first connecting holes (31) are configured to communicate with n of the sub-chambers, n≤N.

7. The air spring (10) as described in claim 5 or 6, characterized in that, N≥3。 8. The air spring (10) as claimed in claim 1, characterized in that, At least two of the said chambers have different volumes.

9. The air spring (10) as claimed in claim 1, characterized in that, The separator (141) is provided in multiple parts.

10. The air spring (10) as claimed in claim 2 or 3, characterized in that, The air spring (10) also includes a support (1) and an airbag (2), the airbag (2) being connected to the support (1), a portion of the main chamber (12) being formed within the support (1), and another portion of the main chamber (12) being formed within the airbag (2).

11. The air spring (10) as claimed in claim 10, characterized in that, The air spring (10) further includes a sealing structure (4) having a sealing channel (45), wherein the first connecting hole (31) is adapted to communicate with the sub-chamber through the sealing channel (45).

12. The air spring (10) as claimed in claim 11, characterized in that, The sealing structure (4) includes an outer structural member (41), an inner structural member (42), a sealing spring (43), and a sealing membrane (44). The sealing channel (45) is formed inside the outer structural member (41). The outer structural member (41) has a guide hole (411) extending axially along the sealing structure (4). The inner structural member (42) is axially movable within the guide hole (411). The sealing membrane (44) is installed on the outer structural member (41), and the end of the inner structural member (42) abuts against the sealing membrane (44). One end of the sealing spring (43) abuts against the outer structural member (41) or the support member (1), and the other end of the sealing spring (43) abuts against the inner structural member (42), so that the sealing membrane (44) is tightly attached to the connecting member (3).

13. The air spring (10) as claimed in claim 10, characterized in that, The support member (1) includes a support column (16), and the connecting member (3) is sleeved on the support column (16) through a bearing (6) so that the connecting member (3) can rotate around the axis of the support column (16).

14. The air spring (10) as claimed in claim 10, characterized in that, The support member (1) includes a support platform (17), which is disposed opposite to the connecting member (3), and a thrust bearing (7) is provided between the connecting member (3) and the support platform (17).

15. The air spring (10) as claimed in claim 2 or 3, characterized in that, The driving component (5) includes a motor (51) and a driving gear (52). The motor (51) drives the driving gear (52) to rotate. The connecting component (3) includes a driven gear (32), which meshes with the driving gear (52) for transmission; or, The driving component (5) includes a motor (51) and a worm gear. The motor (51) is used to drive the worm gear to rotate. The connecting component (3) includes a worm wheel, which meshes with the worm gear for transmission.

16. The air spring (10) as claimed in claim 5 or 6, characterized in that, Each of the sub-chambers has a second connecting hole (111), and the second connecting holes (111) corresponding to the plurality of sub-chambers are evenly distributed in the circumference of the air spring (10), M>N; The connecting element (3) has an initial position and a partially connected position. In the initial position, the second connecting holes (111) of the plurality of sub-chambers are all connected to the corresponding first connecting holes (31). In the partially connected position, n sub-chambers are connected to the corresponding first connecting holes (31), where n < N.

17. The air spring (10) as claimed in claim 16, characterized in that, The connecting member (3) is provided with a plurality of first connecting holes (31), and the central angle between two adjacent first connecting holes (31) includes one or more of 15°, 30°, 45°, and 60°.

18. A suspension system (100), characterized in that, Includes the air spring (10) according to any one of claims 1-17.

19. A vehicle (1000), characterized in that, Includes the suspension system (100) as described in claim 18.

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