Adjusting mechanism for air spring, air spring, air suspension system and vehicle

Abstract

The utility model discloses an adjusting mechanism used for an air spring, the air spring, an air suspension system and a vehicle, and the adjusting mechanism used for the air spring comprises a main chamber; a sub-chamber; the air plug comprises a communicating piece and an adjusting column, the communicating piece is provided with a communicating channel for communicating the main cavity with the auxiliary cavity, and the adjusting column is in threaded fit with the communicating piece, so that the adjusting column can move between a first position and a second position in the first direction when rotating, the communicating channel is cut off when the adjusting column is located at the first position, and the adjusting column is located at the second position; and the adjusting column opens the communication channel at the second position. The adjusting mechanism for the air spring can meet the requirements of different cavities, flexible switching of the single cavity and the double cavities of the air spring is achieved, and therefore the damping performance of an air suspension system is improved, and a vehicle can run more stably.

Description

Technical Field

[0001] The utility model relates to the field of air springs, in particular to an adjusting mechanism for an air spring, an air spring, an air suspension system and a vehicle. Background Art

[0002] At present, the air spring structure is divided into single-chamber and multi-chamber. The single-chamber has only one main chamber, and the multi-chamber air spring has a double-chamber or three-chamber structure, most of which are double-chamber structures. The two chambers of the existing double-chamber air spring are generally connected by a control valve, and the control system adjusts the air spring stiffness by opening and closing.

[0003] However, since the existing valve body structure is relatively complex, there is a lack of a simpler structure to control the on-off of the main and auxiliary chambers of the air spring, so as to switch the single and double chambers of the air spring according to demand. Utility Model Content

[0004] The utility model aims to provide an adjustment mechanism for an air spring, an air spring, an air suspension system and a vehicle, so that a secondary chamber in the air spring can be activated or closed according to requirements.

[0005] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention.

[0006] In the first aspect, the utility model provides an adjustment mechanism for an air spring, comprising: a main chamber; a sub-chamber; an air plug, including a connecting piece and an adjusting column, the connecting piece being provided with a connecting passage connecting the main chamber and the sub-chamber, the adjusting column being threadedly engaged with the connecting piece so that the adjusting column can move between a first position and a second position along a first direction when rotated, wherein the adjusting column blocks the connecting passage when in the first position, and opens the connecting passage when in the second position.

[0007] According to the adjustment mechanism for the air spring provided by the first aspect of the utility model, the position of the adjustment column in the air plug is adjusted to control the opening and closing of the air plug, thereby connecting or separating the main chamber and the sub-chamber, thereby realizing flexible switching of the single and double chambers of the air spring, so that the air spring can adapt to different cavity requirements, thereby improving the shock absorbing performance of the air suspension system and making the vehicle run more smoothly.

[0008] In one embodiment, the connecting channel includes a first outlet connected to the main chamber and a second outlet connected to the sub-chamber. The inner peripheral wall of the connecting channel is provided with a boss, and the boss encloses and forms the first outlet, or the boss cooperates with the inner peripheral wall of the connecting channel to form the first outlet. When the adjusting column is in the first position, it abuts against the boss along the first direction to block the first outlet.

[0009] In one embodiment, the adjusting column is guided and matched with the inner peripheral wall of the communicating channel along the first direction, and the second outlet is provided on the inner peripheral wall of the communicating channel.

[0010] In one embodiment, the second outlet is opened along a second direction, and the second direction is perpendicular to the first direction.

[0011] In one embodiment, the boss is annular and encloses a first outlet. The adjusting column includes an air guide portion and an elastic seal. The elastic seal is arranged at the end of the air guide portion close to the first outlet. When the adjusting column is in the first position, the elastic seal abuts against the boss to block the first outlet.

[0012] In one embodiment, the elastic seal includes a sealing base and an annular buffer protrusion. The sealing base is connected to the air guide portion. The buffer protrusion is formed on a side of the sealing base close to the boss. When the adjustment column is in the first position, the buffer protrusion abuts against the edge of the first outlet.

[0013] In one embodiment, the elastic sealing member is sleeved on the end of the air guiding portion close to the first outlet.

[0014] In one embodiment, the adjusting column includes an adjusting portion and an air guiding portion which are connected to each other, the adjusting portion is at least partially located outside the connecting passage, and the air guiding portion is used to block or open the connecting passage.

[0015] In one embodiment, the adjusting portion and the air guiding portion are integrally formed.

[0016] In one embodiment, the outer peripheral wall of the adjustment part is provided with an adjustment thread, and the inner peripheral wall of the connecting channel is provided with an internal thread that cooperates with the adjustment thread, and the thread cooperation between the adjustment column and the connecting piece is achieved through the cooperation between the adjustment thread and the internal thread.

[0017] In one embodiment, the adjustment mechanism of the air spring includes a driving assembly, and the driving assembly is used to drive the adjustment part to rotate.

[0018] In one embodiment, a limiting step is formed at the connection between the adjustment portion and the air guide portion, the connecting piece is provided with a first limiting portion, and when the adjustment column is located at the first position, the limiting step abuts against the first limiting portion along the first direction.

[0019] In one embodiment, a second limiting portion is provided on the inner peripheral wall of the communication channel, and a third limiting portion is provided on the adjusting column. When the adjusting column is located at the second position, the third limiting portion abuts against the second limiting portion along the first direction.

[0020] In one embodiment, the adjusting column is provided with a fourth limiting portion, and when the adjusting column is located at the first position, the fourth limiting portion abuts against the second limiting portion along the first direction.

[0021] In one embodiment, the adjustment column is a limiting groove, at least a portion of the second limiting portion is located in the limiting groove, and two opposite groove walls of the limiting groove constitute the third limiting portion and the fourth limiting portion respectively.

[0022] In one embodiment, the connecting piece is provided with a limiting hole and a limiting pin, the limiting hole penetrates to the connecting channel along the second direction, and the limiting pin at least partially extends into the connecting channel through the limiting hole to form a second limiting portion.

[0023] In one embodiment, a sealing groove is provided on the outer periphery of the adjusting column, and a sealing ring is provided in the sealing groove.

[0024] The air spring provided by the utility model controls the on-off of the air plug by adjusting the position of the adjusting column, thereby connecting or separating the main chamber and the sub-chamber, and realizing flexible switching of the single and double chambers of the air spring, so that the air spring can adapt to different cavity requirements, thereby improving the shock absorption performance of the air suspension system and making the vehicle run more smoothly.

[0025] In a second aspect, the utility model provides an air spring, comprising the adjustment mechanism for the air spring according to the first aspect.

[0026] According to the air spring provided in the second aspect of the utility model, through the setting of the adjustment mechanism of the air spring, the adjustment of the air plug realizes the opening and closing of the main and sub-chambers, and realizes flexible control of the single and double chambers of the air spring, thereby widening the stiffness adjustment range of the air spring and improving its shock absorption performance.

[0027] In a third aspect, the utility model provides an air suspension system, which includes an air pump and an air spring as in the second aspect, wherein the main chamber is connected to the air pump.

[0028] According to the air spring air suspension system provided by the third aspect of the utility model, the switchable dual-chamber design of the air spring enables it to have a wider stiffness adjustment range, thereby improving the stability of the air suspension and making the air suspension system's shock absorption performance stronger and more stable.

[0029] In a fourth aspect, the utility model provides a vehicle, which includes the air suspension system of the third aspect.

[0030] According to the vehicle provided by the fourth aspect of the utility model, the air suspension system can effectively control the stiffness adjustment range according to the vehicle conditions and driving conditions, thereby improving the shock absorption performance of the vehicle, thereby making the vehicle run more smoothly and comfortably. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0032] Figure 1This is a schematic diagram of the appearance of an air plug provided in an embodiment of the present application;

[0033] Figure 2 is a schematic diagram of an adjustment column provided in an embodiment of the present application in a first position;

[0034] Figure 3 is a schematic diagram of an adjustment column provided in an embodiment of the present application in a second position;

[0035] Figure 4 It is a schematic diagram of a main chamber and a secondary chamber separation state provided in an embodiment of the present application;

[0036] Figure 5 It is a schematic diagram of the conduction state of the main and auxiliary chambers provided in an embodiment of the present application;

[0037] Reference numerals:

[0038] 1. Connecting piece, 11. Connecting channel, 111. First outlet, 112. Second outlet, 113. Boss, 12. Limiting hole, 13. First limiting portion, 14. Second limiting portion, 2. Adjusting column, 21. Adjusting portion, 211. Adjusting thread, 22. Air guide portion, 23. Elastic sealing piece, 231. Sealing base, 232. Buffering protrusion, 24. Limiting step, 25. Third limiting portion, 26. Fourth limiting portion, 27. Sealing ring, 3. Main chamber, 4. Sub-chamber, 5. Air inlet, x, first direction, y, second direction. DETAILED DESCRIPTION

[0039] In the following description, a large number of specific details are given to provide a more thorough understanding of the utility model. In the description of the utility model, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description. Unless otherwise stated, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0040] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0041] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0042] In order to be able to understand the features and technical contents of the embodiments of the utility model in more detail, the implementation of the embodiments of the utility model is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the utility model. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0043] Refer to the following Figure 1-Figure 5 An adjustment mechanism for an air spring, an air spring, an air suspension system, and a vehicle according to some embodiments of the present application are described.

[0044] like Figure 1-5As shown, in the first aspect of the utility model, an adjustment mechanism for an air spring is provided, comprising: a main chamber 3; a sub-chamber 4; an air plug, comprising a connecting piece 1 and an adjusting column 2, wherein the connecting piece 1 is provided with a connecting passage 11 connecting the main chamber 3 and the sub-chamber 4, and the adjusting column 2 is threadedly matched with the connecting piece 1, so that the adjusting column 2 can move between a first position and a second position along a first direction x when rotating, wherein the adjusting column 2 blocks the connecting passage 11 when in the first position, and opens the connecting passage 11 when in the second position. By adjusting the position of the adjusting column 2, the control of the on-off of the air plug is realized, and the flexible switching of the single and double chambers of the air spring is realized, thereby connecting or separating the main chamber 3 and the sub-chamber 4, so that the air spring can be adapted to different chamber requirements, thereby improving the shock absorption performance of the air suspension system and making the vehicle run more smoothly.

[0045] Specifically, during the air spring shock absorption process, the air spring body is divided into two parts: the main chamber 3 and the sub-chamber 4. The gas enters the main chamber 3 from the air spring air inlet 5, and the main chamber 3 and the sub-chamber 4 are connected and disconnected through the air plug, so as to control the gas channel of the air spring cavity, and then change the volume of the utilized cavity to provide different stiffness. Specifically, when the adjusting column 2 is in the first position, the connecting channel 11 is blocked, and the air plug is blocked, and the main chamber 3 is separated from the sub-chamber 4. At this time, the air spring is only supplied with air through the main chamber 3, and the air supply volume is relatively small, the stiffness is large, and the controllability is good; when the adjusting column 2 is in the second position, the connecting channel 11 is opened, and the air plug is connected, and the air spring is supplied with air by the main chamber 3 and the sub-chamber 4 at the same time, and then the air supply volume is composed of the main chamber 3 and the sub-chamber 4, and the air supply volume is relatively large, so the stiffness is small and the comfort is good.

[0046] For further information, please refer to Figure 3 The adjusting column 2 is threadedly matched with the connecting piece 1 to move along the first direction x, wherein the first direction x is the direction guided by the thread, which is the axial direction of the air plug in this embodiment. The adjusting column 2 can open or block the first outlet 111 by moving in the first direction x.

[0047] The adjustment mechanism for the air spring provided in this embodiment controls the on-off of the air plug by adjusting the position of the adjustment column 2, thereby connecting or separating the main chamber 3 and the sub-chamber 4, and realizing flexible switching of the single and double chambers of the air spring, so that the air spring can adapt to different cavity requirements, thereby improving the shock absorption performance of the air suspension system and making the vehicle run more smoothly.

[0048] In one embodiment, if Figure 2The connecting passage 11 includes a first outlet 111 connected to the main chamber 3 and a second outlet 112 connected to the sub-chamber 4. The inner peripheral wall of the connecting passage 11 is provided with a boss 113. The boss 113 encloses and forms the first outlet 111, or the boss 113 cooperates with the inner peripheral wall of the connecting passage 11 to form the first outlet 111. When the adjusting column 2 is in the first position, it abuts against the boss 113 along the first direction x to block the first outlet 111.

[0049] Specifically, the first outlet 111 is opened in the axial direction, which is consistent with the moving direction of the adjusting column 2. The first outlet 111 can be a through hole shape formed by the boss 113 extending inwardly from the inner peripheral wall of the connecting piece to form an annular shape, or can be other shapes formed by the boss 113 extending inwardly from the inner peripheral wall of the connecting piece to form an annular shape, as long as the boss 113 can abut against the adjusting column 2 moving in the first direction x, and the first outlet 111 can be blocked by the adjusting column 2 at this time.

[0050] Optionally, the boss 113 can be enclosed into a circular, square, triangular or other irregularly shaped through hole to form the first outlet, or can be extended inward from the inner circumferential wall of the connecting channel 11 to form other shapes, which is not limited by the present application.

[0051] In this embodiment, the second outlet 112 is connected to the sub-chamber 4. During the movement of the adjusting column 2, the main chamber 3 and the sub-chamber 4 can be connected only when the first outlet 111 and the second outlet 112 are opened at the same time.

[0052] In one embodiment, the adjusting column 2 cooperates with the inner peripheral wall of the connecting channel 11 along the first direction x, and the second outlet 112 is opened on the inner peripheral wall of the connecting channel 11. Specifically, when the adjusting column 2 is in the first position, the outer peripheral wall of the adjusting column 2 cooperates with the inner peripheral wall of the connecting channel 11 to block the second outlet 112; when the adjusting column 2 moves from the first position to the second position, the end of the adjusting column 2 gradually moves outward, at which time the outer peripheral wall of the adjusting column 2 gradually cannot completely cover the second outlet 112, and an opening appears between the second outlet 112 and the outer peripheral wall of the adjusting column 2, and the opening gradually increases with the movement of the adjusting column 2 until the adjusting column 2 reaches the second position, and the second outlet 112 is fully opened. The adjusting column 2 cooperates with the inner peripheral wall of the connecting channel 11, and the second outlet 112 is opened on the movement path of the adjusting column 2, so that the adjusting column 2 can open the second outlet 112 while moving along the first direction x.

[0053] In one embodiment, if Figure 3, the second outlet 112 is opened along the second direction y, and the second direction y is perpendicular to the first direction x, so that the second outlet 112 is connected with the sub-chamber 4. It is worth noting that the above is only one optional embodiment of the utility model, and the second direction y is not limited to being perpendicular to the first direction x, and can also be other directions that enable the connecting channel 11 to communicate with the sub-chamber 4, such as obliquely intersecting with the first direction x, or the second outlet 112 can be other non-linear shapes.

[0054] In one embodiment, referring to Figure 2-3 The boss 113 is annular and encloses a hole-shaped first outlet 111. The adjusting column 2 includes an air guide portion 22 and an elastic seal 23. The elastic seal 23 is arranged at the end of the air guide portion 22 close to the first outlet 111. When the adjusting column 2 is in the first position, the elastic seal 23 abuts against the boss 113 to block the first outlet 111. At this time, the elastic member produces a certain deformation to form a seal, thereby blocking the gas in the main chamber 3.

[0055] Optionally, the elastic seal 23 can also be set on the boss 113. In this case, the end of the air guide portion 22 close to the first outlet 111 is a hard structure. When the adjusting column 2 is located at the first position, the air guide portion 22 and the elastic seal 23 on the boss 113 abut against each other. At this time, the elastic seal 23 on the boss 113 is deformed, thereby forming a seal for the first outlet 111 and blocking the gas in the main chamber 3.

[0056] Please refer to Figure 3 In one embodiment, the elastic seal 23 includes a sealing base 231 and an annular buffer protrusion 232. The sealing base 231 is connected to the air guide 22. The buffer protrusion 232 is formed on the side of the sealing base 231 close to the boss 113. Its shape matches the circular first outlet 111. When the adjustment column 2 is in the first position, the buffer protrusion 232 abuts against the edge of the first outlet 111 and produces a certain deformation, and cooperates with the sealing base to form a seal for the first outlet 111. It should be noted that the number of the annular buffer protrusion 232 can be multiple, and multiple rings with different diameters can achieve multi-layer sealing for the first outlet 111 to improve the sealing effect.

[0057] Optionally, the elastic seal 23 can also be an annular sealing ring directly fixed to the outer peripheral wall of the air guide part 22. When the adjusting column 2 is in the first position, the air guide part 22 abuts against the boss 113 to block the first outlet 111, and the sealing ring is interference fit with the connecting channel 11 on the outer peripheral wall of the air guide part 22 to achieve sealing and prevent gas leakage.

[0058] In some embodiments of the present invention, Figure 2 , 3The adjusting column 2 includes an adjusting portion 21 and an air guide portion 22 which are connected. The adjusting portion 21 is at least partially located outside the connecting passage 11 so that a tool or a driving motor can be combined with the adjusting portion 21 to rotate the adjusting column 2. The air guide portion 22 is used to block or open the connecting passage 11.

[0059] Specifically, the connection method between the adjusting part 21 and the air guiding part 22 can be a fixed connection and a rotating connection. When the two are fixedly connected, the air guiding part 22 rotates with the rotation of the adjusting part 21, and the two rotate together along the thread to achieve displacement in the first direction x; when the two are rotatingly connected, the air guiding part 22 will not rotate with the rotation of the adjusting part 21, and the two only transmit along the first direction x, which can achieve position switching while reducing the friction between the air guiding part 22 and the inner wall of the connecting piece 1, preventing it from being lost during repeated movement between the first position and the second position, thereby ensuring the sealing effect and durability of the air plug.

[0060] Optionally, the regulating portion 21 and the air guiding portion 22 may be integrally formed to save production costs.

[0061] Optionally, the adjusting portion 21 and the air guiding portion 22 may also be connected in a rotational manner using a ball head, a bearing connection, or the like, so as to prevent the air guiding portion 22 from being damaged by rotational friction.

[0062] In one embodiment, if Figure 2 The outer peripheral wall of the adjusting portion 21 is provided with an adjusting thread 211, and the inner peripheral wall of the connecting passage 11 is provided with an internal thread that cooperates with the adjusting thread 211. The internal thread and the adjusting thread 211 are screwed together to realize the connection and cooperation between the adjusting column 2 and the connecting piece 1, so that the adjusting column 2 can move inside the connecting piece 1 through external rotation. It should be noted that the position of the adjusting thread 211 is not limited to the outer peripheral wall of the adjusting portion 21. The above is only an embodiment. The adjusting thread 211 can also be set on the outer periphery of the air guide portion 22, so that the adjusting column 2 and the connecting piece 1 can be threadedly matched to achieve relative movement.

[0063] In one embodiment, the air spring adjustment mechanism includes a driving assembly, which is used to drive the adjustment part 21 to rotate. The driving assembly can be a driving motor, which is connected to the adjustment part 21. After receiving the adjustment instruction, the driving assembly can adjust the opening of the air plug in real time according to different vehicle operation conditions.

[0064] Optionally, the end of the adjusting portion 21 may be a hexagonal prism, a triangular prism, a quadrangular prism or other shapes. By arranging a driving tool of matching shape outside the adjusting portion 21, or by engaging it with a driving component, the adjusting portion 21 may be rotated to move the position of the adjusting column 2 in the connecting piece 1.

[0065] In one embodiment, if Figure 2A limiting step 24 is formed at the connection between the adjusting portion 21 and the air guiding portion 22. Since the threaded section of the adjusting portion 21 and the air guiding portion 22 are both cylindrical, and the diameter of the adjusting portion 21 is slightly larger than that of the air guiding portion 22, a step, i.e., a limiting step 24, is formed at the connection between the two. Correspondingly, a first limiting portion 13 is provided on the inner wall of the connecting piece 1. When the adjusting column 2 is in the first position, the limiting step 24 abuts against the first limiting portion 13 along the first direction x. The first limiting portion 13 can be used as a positioning reference to ensure that the adjusting column 2 can abut against the correct position when moving toward the first opening, so as to prevent the air guiding portion 22 and the boss 113 from being over-compressed and causing loss. This positioning method helps to ensure the sealing performance and durability of the air plug.

[0066] Optional, see Figure 2 , a second limiting portion 14 is provided on the inner circumferential wall of the communication channel 11, and the second limiting portion 14 protrudes from the inner circumferential wall of the communication channel 11, and the adjusting column 2 is provided with a third limiting portion 25, and when the adjusting column 2 is located at the second position, the third limiting portion 25 abuts against the second limiting portion 14 along the first direction x. This positioning method limits the outward rotation stroke of the adjusting portion 21, and can prevent the adjusting column 2 from being excessively rotated out and out of cooperation with the connecting member 1 while ensuring that the second outlet 112 is fully opened.

[0067] Optionally, the adjusting column 2 is provided with a fourth limiting portion 26, and when the adjusting column 2 is located at the first position, the fourth limiting portion 26 abuts against the second limiting portion 14 along the first direction x. The cooperation between the fourth limiting portion 26 and the second limiting portion 14 limits the travel of the adjusting column 2 toward the first opening for a second time, thereby preventing the air guide portion 22 and the boss 113 from being over-compressed and causing loss.

[0068] Optionally, the adjusting column 2 is a limiting groove, at least part of the second limiting portion 14 is located in the limiting groove, and two opposite groove walls of the limiting groove respectively constitute a third limiting portion 25 and a fourth limiting portion 26. The cooperation between the limiting groove and the second limiting portion 14 limits the displacement stroke of the adjusting column 2 in both directions, which helps to ensure the sealing performance and durability of the air guide portion 22.

[0069] In one embodiment, see Figure 1 , Figure 2 The connecting piece 1 is provided with a limiting hole 12 and a limiting pin. The limiting hole 12 passes through the connecting channel 11 along the second direction y. The limiting pin at least partially extends into the connecting channel 11 through the limiting hole 12 to form a second limiting portion 14. When the adjusting column 2 moves to the first position or the second position, the limiting pin contacts the third limiting portion 25 and the fourth limiting portion 26 to prevent the adjusting column 2 from continuing to move.

[0070] In one embodiment, a sealing groove is opened on the outer periphery of the adjusting column 2, and a sealing ring 27 is arranged in the sealing groove. The adjusting column 2 is interference fit with the sealing ring 27 and the connecting piece 1 to prevent the gas from escaping from the gap. The sealing ring 27 is used to ensure the sealing of other parts inside the gas plug. The on-off of the gas plug can be controlled by controlling the on-off of the first outlet 111 and the second outlet 112, thereby controlling the conduction or separation of the main chamber 3 and the sub-chamber 4.

[0071] The air spring provided by the first aspect of the utility model realizes the opening and closing of the main and sub-cavities by setting an adjustable opening and closing air plug between the main chamber 3 and the sub-cavity 4, controls the gas passage in the inner cavity of the air spring body, thereby opening or closing the sub-cavity 4, and then changing the volume of the available cavity to adjust the chamber size and stiffness of the air spring. The air spring provided by the utility model controls the opening and closing of the air plug by adjusting the position of the air plug adjustment column 2, realizes the flexible switching of the single and double cavities of the air spring, and enables the air spring to adapt to different cavity requirements, thereby improving the shock absorption performance of the air suspension system and making the vehicle run more smoothly.

[0072] Second, please refer to Figure 4-5 The utility model provides an air spring, comprising an adjustment mechanism for an air spring as in the first aspect.

[0073] According to the air spring provided in the second aspect of the utility model, through the setting of the adjustment mechanism of the air spring, the adjustment of the air plug realizes the opening and closing of the main and sub-chambers, and realizes flexible control of the single and double chambers of the air spring, thereby widening the stiffness adjustment range of the air spring and improving its shock absorption performance.

[0074] In a third aspect, the utility model provides an air suspension system, which includes an air pump and an air spring as in the second aspect, wherein the main chamber 3 is connected to the air pump.

[0075] According to the air spring air suspension system provided by the third aspect of the utility model, the switchable dual-chamber design of the air spring enables it to have a wider stiffness adjustment range, thereby improving the stability of the air suspension and making the air suspension system's shock absorption performance stronger and more stable.

[0076] In a fourth aspect, the utility model provides a vehicle, which includes the air suspension system of the third aspect.

[0077] According to the vehicle provided by the fourth aspect of the utility model, the air suspension system can effectively control the stiffness adjustment range according to the vehicle conditions and driving conditions, thereby improving the shock absorption performance of the vehicle, thereby making the vehicle run more smoothly and comfortably.

[0078] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0079] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps described in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0080] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An adjustment mechanism for an air spring, characterized in that: include: main chamber; Sub-chamber; The air plug includes a connecting piece and an adjusting column, wherein the connecting piece is provided with a connecting passage connecting the main chamber and the sub-chamber, and the adjusting column is threadedly matched with the connecting piece so that the adjusting column can move between a first position and a second position along a first direction when rotating, wherein the adjusting column blocks the connecting passage when in the first position, and opens the connecting passage when in the second position.

2. The adjustment mechanism for an air spring according to claim 1, characterized in that: The connecting passage comprises a first outlet connected to the main chamber and a second outlet connected to the sub-chamber. The inner peripheral wall of the connecting passage is provided with a boss, and the boss encloses and forms the first outlet, or the boss cooperates with the inner peripheral wall of the connecting passage to form the first outlet. When the adjusting column is in the first position, it abuts against the boss along the first direction to block the first outlet.

3. The adjustment mechanism for an air spring according to claim 2, characterized in that: The adjusting column is guided and matched with the inner peripheral wall of the communicating channel along the first direction, and the second outlet is provided on the inner peripheral wall of the communicating channel.

4. The adjustment mechanism for an air spring according to claim 3, characterized in that: The second outlet is opened along a second direction, and the second direction is perpendicular to the first direction.

5. The adjustment mechanism for an air spring according to claim 2, characterized in that: The boss is annular and encloses the first outlet. The adjusting column includes an air guide portion and an elastic seal. The elastic seal is arranged at the end of the air guide portion close to the first outlet. When the adjusting column is located at the first position, the elastic seal abuts against the boss to block the first outlet.

6. The adjustment mechanism for an air spring according to claim 5, characterized in that: The elastic sealing member includes a sealing base and an annular buffer protrusion, the sealing base is connected to the air guide portion, the buffer protrusion is formed on a side of the sealing base close to the boss, and when the adjustment column is located at the first position, the buffer protrusion abuts against the edge of the first outlet.

7. The adjustment mechanism for an air spring according to claim 5, characterized in that: The elastic sealing member is sleeved on the end of the air guide portion close to the first outlet.

8. The adjustment mechanism for an air spring according to claim 1, characterized in that: The regulating column comprises a connected regulating portion and an air guiding portion, wherein the regulating portion is at least partially located outside the communicating channel, and the air guiding portion is used to block or open the communicating channel.

9. The adjustment mechanism for an air spring according to claim 8, characterized in that: The regulating portion and the air guiding portion are integrally formed.

10. The adjustment mechanism for an air spring according to claim 8, characterized in that: The outer peripheral wall of the adjustment part is provided with an adjustment thread (52), and the inner peripheral wall of the connecting channel is provided with an internal thread that cooperates with the adjustment thread. The thread cooperation between the adjustment thread and the internal thread is realized by the cooperation between the adjustment thread and the internal thread.

11. The adjustment mechanism for an air spring according to claim 10, characterized in that: The adjusting mechanism of the air spring comprises a driving assembly, and the driving assembly is used for driving the adjusting part to rotate.

12. The adjustment mechanism for an air spring according to claim 8, characterized in that: A limiting step is formed at the connection between the adjusting portion and the air guiding portion, the connecting piece is provided with a first limiting portion, and when the adjusting column is located at the first position, the limiting step abuts against the first limiting portion along the first direction.

13. The adjustment mechanism for an air spring according to claim 1, characterized in that: A second limiting portion is disposed on the inner peripheral wall of the communication channel, and a third limiting portion is disposed on the adjustment column. When the adjustment column is located at the second position, the third limiting portion abuts against the second limiting portion along the first direction.

14. The adjustment mechanism for an air spring according to claim 13, characterized in that: The adjusting column is provided with a fourth limiting portion. When the adjusting column is located at the first position, the fourth limiting portion abuts against the second limiting portion along the first direction.

15. The adjustment mechanism for an air spring according to claim 14, characterized in that: The adjusting column is provided with a limiting groove, at least a part of the second limiting portion is located in the limiting groove, and two opposite groove walls of the limiting groove respectively constitute the third limiting portion and the fourth limiting portion.

16. The adjustment mechanism for an air spring according to claim 15, characterized in that: The connecting piece is provided with a limiting hole and a limiting pin, the limiting hole penetrates the connecting channel along the second direction, and the limiting pin at least partially extends into the connecting channel through the limiting hole to form the second limiting portion.

17. The adjustment mechanism for an air spring according to claim 1, characterized in that: A sealing groove is provided on the outer periphery of the adjusting column, and a sealing ring is arranged in the sealing groove.

18. An air spring, characterized in that: Includes an adjustment mechanism for an air spring as described in any one of claims 1-17.

19. An air suspension system, characterized in that: The invention comprises an air pump and the air spring as claimed in claim 18, wherein the main chamber is in communication with the air pump.

20. A vehicle, characterized in that: Includes the air suspension system as claimed in claim 19.

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