Valve element assembly, electric valve, air suspension and vehicle

Abstract

The utility model provides a valve element assembly, an electric valve, an air suspension and a vehicle. The valve element assembly comprises a valve rod and a valve element. A first limiting part and a first flange are arranged at one end of the valve rod in the axial direction. The first turnup and the first limiting part are arranged at intervals in the axial direction. The valve rod is sleeved with the valve element. At least part of the valve element is located between the first limiting part and the first flanging. The first limiting part and the first flanging are suitable for limiting the valve element in the axial direction. The structure is simple, the number of parts is reduced, the service life is prolonged, and the stability is improved.

Description

Technical Field

[0001] The utility model generally relates to the technical field of vehicle suspension, and more specifically to a valve core component, an electric valve, an air suspension and a vehicle. Background Art

[0002] The electric valve in the related art is located in the air spring and divides the interior of the air spring into a main air chamber and a secondary air chamber. The electric valve is connected in series between the main air chamber and the secondary air chamber to adjust the open and closed state between the main air chamber and the secondary air chamber. The electric valve in the related art usually needs to be provided with a limit member to prevent the valve core and other components from detaching from the valve stem. This increases the number of parts, resulting in a complex structure of the electric valve, and the limit member is prone to loosening after long-term use, thereby reducing the service life of the electric valve. Utility Model Content

[0003] A series of simplified concepts are introduced in the utility model content section, which will be further described in detail in the detailed implementation section. The utility model content section of the utility model does not mean to attempt to define the key features and essential technical features of the technical solution claimed for protection, nor does it mean to attempt to determine the scope of protection of the technical solution claimed for protection.

[0004] In order to at least partially solve the above problems, the utility model provides a valve core assembly in a first aspect for an electric valve in an air suspension, the valve core assembly comprising:

[0005] A valve stem, wherein one end of the valve stem along the axial direction is provided with a first limit portion and a first flange, and the first flange and the first limit portion are spaced apart along the axial direction; and

[0006] A valve core is sleeved on the outside of the valve stem, at least part of the valve core is located between the first limiting portion and the first flange, and the first limiting portion and the first flange are suitable for limiting the valve core in the axial direction.

[0007] According to the valve core assembly of the first aspect of the utility model, the valve core can be prevented from moving relative to the valve stem in the axial direction of the valve stem by providing the first limit portion and the first flange on the valve stem. The utility model has a simple structure, which not only reduces the number of parts, but also helps to improve service life and stability.

[0008] Optionally, a second limiting portion and a second flange are formed at the other end of the valve stem along the axial direction, and the first flange and the first limiting portion are spaced apart along the axial direction.

[0009] The valve core assembly also includes:

[0010] The core iron is sleeved on the outside of the valve stem, at least part of the core iron is located between the second limiting portion and the second flange, and the second limiting portion and the second flange are suitable for axially limiting the core iron.

[0011] Optionally, the valve core assembly further includes:

[0012] A sealing gasket is disposed between the first flange and the valve core, and is suitable for sealing a first opening of the electric valve.

[0013] Optionally, the valve core assembly further includes:

[0014] A fixing gasket is connected between the first flange and the sealing gasket, and the outer diameter of the fixing gasket is smaller than the outer diameter of the sealing gasket.

[0015] Optionally, the valve core assembly further includes an anti-collision member connected to an end surface of the valve core away from the sealing gasket along the axial direction.

[0016] A second aspect of the utility model provides an electric valve for an air suspension, the electric valve comprising:

[0017] ontology; and

[0018] The valve core assembly is movably arranged in the axial direction inside the body.

[0019] According to the electric valve of the second aspect of the utility model, by applying the above-mentioned valve core assembly, the structure is simpler, which not only reduces the number of parts but also helps to improve the service life and stability.

[0020] Optionally, the electric valve further comprises a valve seat, which is arranged inside the body and divides the inside of the body into a first chamber and a second chamber;

[0021] The valve stem passes through the valve seat and extends to the first cavity and the second cavity;

[0022] The valve core assembly also includes a core iron, which is located in the first cavity and fixedly connected to the valve stem, and the valve core is located in the second cavity and fixedly connected to the valve stem.

[0023] Optionally, the electric valve further comprises an elastic return member, wherein the elastic return member is connected between the core iron, one of the valve core and the valve seat, so as to apply a return force along the axial direction to the valve stem through the core iron and one of the valve core.

[0024] Optionally, the elastic reset member is arranged between the core iron and the valve seat.

[0025] The electric valve also includes an anti-collision member, wherein

[0026] The anti-collision member is connected to the end surface of the valve seat facing the valve core along the axial direction; and / or

[0027] The anti-collision member is connected to an end surface of the valve core facing the valve seat along the axial direction.

[0028] Optionally, the body is provided with a first opening and a second opening, the first opening extends along the axial direction and communicates with the second cavity and the outside of the body, and the second opening extends along the radial direction of the valve stem and communicates with the second cavity and the outside of the body;

[0029] The valve core assembly is movably arranged along the axial direction between an open position and a closed position. The valve core assembly located at the open position allows the first opening to communicate with the second opening, and the valve core assembly located at the closed position prevents the first opening from communicating with the second opening.

[0030] Optionally, the valve seat is provided with an accommodating groove;

[0031] The electric valve further comprises:

[0032] A guide washer is fixed to the accommodating groove and is suitable for being sleeved on the outside of the valve core. The guide washer is used for sealingly cooperating with the outer peripheral surface of the valve core.

[0033] Optionally, the valve core divides the second cavity into a first accommodating cavity and a second accommodating cavity, and at least one of the valve core and the valve stem forms a balancing flow channel, and the balancing flow channel connects the first accommodating cavity and the second accommodating cavity.

[0034] A third aspect of the utility model provides an air suspension, the air suspension comprising:

[0035] an air spring, the air spring comprising a main air chamber and a secondary air chamber; and

[0036] The above-mentioned electric valve is arranged inside the air spring, and has a first opening and a second opening. One of the first opening and the second opening is connected to the main air chamber, and the other of the first opening and the second opening is connected to the auxiliary air chamber. The electric valve is configured to be able to control the on-off of the air path between the main air chamber and the auxiliary air chamber.

[0037] According to the air suspension of the third aspect of the utility model, an electric valve is provided between the main air chamber and the auxiliary air chamber of the air spring, thereby adjusting the on-off of the air path between the main air chamber and the auxiliary air chamber. Since the electric valve has a simple and reliable structure, it is beneficial to the stability of the air suspension in operation for a longer period of time.

[0038] A fourth aspect of the utility model provides a vehicle, the vehicle comprising the above-mentioned electric valve or the above-mentioned air suspension.

[0039] According to the vehicle of the fourth aspect of the utility model, by applying the above-mentioned electric valve or air suspension, the stability and reliability of the vehicle's vibration reduction performance can be improved, which is beneficial to improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The following drawings of the embodiments of the present invention are used as part of the present invention for understanding the present invention. The drawings show the embodiments of the present invention and their descriptions, and are used to explain the principles of the present invention. In the drawings,

[0041] Figure 1 A three-dimensional view of an electric valve according to a preferred embodiment of the utility model;

[0042] Figure 2 for Figure 1 Another perspective view of the electric valve shown;

[0043] Figure 3 for Figure 1 A cross-sectional view of the electric valve shown;

[0044] Figure 4 is a cross-sectional view of a valve stem according to a preferred embodiment of the utility model;

[0045] Figure 5 is a cross-sectional view of a core iron according to a preferred embodiment of the utility model;

[0046] Figure 6 is a cross-sectional view of a valve seat according to a preferred embodiment of the utility model;

[0047] Figure 7 for Figure 3 A schematic diagram of the structure of the guide washer;

[0048] Figure 8 is a cross-sectional view of a valve core assembly according to a preferred embodiment of the utility model; and

[0049] Fig. 9 It is a cross-sectional view of a valve core assembly according to another preferred embodiment of the utility model.

[0050] Description of reference numerals:

[0051] 100: body 100a: first cavity

[0052] 100b: second chamber 100c: first receiving chamber

[0053] 100d: second accommodating chamber 100e: first opening

[0054] 100f: Second opening 100g: Coil accommodating chamber

[0055] 101: base 102: housing

[0056] 103: Sealing seat 104: Magnetic isolation tube

[0057] 105: Magnetic ring 106: Electrical terminal

[0058] 110: valve stem 111: first limiter

[0059] 112: second limiting portion 113: first flange

[0060] 114: Second flange 115: Axial hole

[0061] 116: radial hole 117: first balancing channel

[0062] 120: core iron 121: first connection hole

[0063] 121a: first positioning portion 131: valve core

[0064] 132: Sealing gasket 133: Fixed gasket

[0065] 134: Anti-collision part 140: Valve seat

[0066] 141: Accommodating groove 142: Second connecting hole

[0067] 142a: second positioning portion 150: elastic return member

[0068] 160: Guide washer 170: Coil component

[0069] 180: Valve core assembly

[0070] 210: Valve stem 231: Valve core

[0071] 231a: first via hole 232: sealing gasket

[0072] 232a: second via hole 233: fixing pad

[0073] 233a: third via hole 235: second balancing channel DETAILED DESCRIPTION

[0074] In the following description, a large number of specific details are given to provide a more thorough understanding of the present invention. However, it is obvious to those skilled in the art that the present invention can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present invention, some technical features known in the art are not described.

[0075] In order to fully understand the implementation of the present invention, a detailed structure will be presented in the following description. Obviously, the implementation of the implementation of the present invention is not limited to the specific details familiar to those skilled in the art.

[0076] It should be understood that the purpose of the terms used herein is only to describe specific embodiments and is not intended to limit the present invention, and the singular forms "a", "an" and "said / the" are also intended to include plural forms, unless the context clearly indicates otherwise. When the terms "comprise" and / or "include" are used in this specification, it indicates the presence of the features, integral bodies, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integral bodies, steps, operations, elements, components and / or combinations thereof.

[0077] Ordinal numbers such as "first" and "second" cited in the present invention are merely identifiers and do not have any other meaning, such as a specific order. Moreover, for example, the term "first component" itself does not imply the existence of a "second component", and the term "second component" itself does not imply the existence of a "first component". It should be noted that the terms "upper", "lower", "front", "back", "left", "right", "inner", "outer" and similar expressions used in the present invention are for illustrative purposes only and are not limiting.

[0078] Hereinafter, specific embodiments of the present invention will be described in more detail with reference to the accompanying drawings. These drawings show representative embodiments of the present invention and are not intended to limit the present invention.

[0079] The utility model provides a vehicle. The vehicle includes an air suspension. The air suspension includes an electric valve and an air spring (not shown). The electric valve is arranged inside the air spring. The electric valve is connected in series in an air path between a main air chamber and a secondary air chamber to adjust the on-off state of the air path between the main air chamber and the secondary air chamber.

[0080] See below Figures 1 to 9 The examples shown are used to explain the present invention in detail.

[0081] The electric valve according to the utility model includes a body 100 and a valve core assembly 180 located inside the body 100. The valve core assembly 180 includes a valve stem 110, a core iron 120 and a valve core 131. The valve stem 110 is movably arranged inside the body 100 along its own axial direction. The axial direction of the valve stem 110 can be parallel to the axial direction of the body 100. A first limit portion 111 and a first flange 113 are provided at one end of the valve stem 110. A second limit portion 112 and a second flange 114 are provided at the other end of the valve stem 110. The first limit portion 111 and the second limit portion 112 are both located on the outer peripheral surface of the valve stem 110. The second limit portion 112 and the first limit portion 111 are arranged at intervals in the axial direction. The first flange 113 and the second flange 114 are respectively located at the two ends of the valve stem 110 along the axial direction. Specifically, the end of the valve stem 110 close to the second limit portion 112 along the axial direction is formed with a second flange 114. The end of the valve stem 110 close to the first limit portion 111 in the axial direction is formed with a first flange 113. The core iron 120 is sleeved on the outside of the valve stem 110. The valve core 131 is sleeved on the outside of the valve stem 110. At least part of the valve core 131 is located between the first limit portion 111 and the first flange 113. The first limit portion 111 and the first flange 113 limit the valve core 131 in the axial direction. At least part of the core iron 120 is located between the second limit portion 112 and the second flange 114. The second limit portion 112 and the second flange 114 limit the core iron 120 in the axial direction.

[0082] According to the valve core assembly 180 of the present invention, by setting a first limit portion 111 and a first flange 113 on the valve stem 110, the valve core 131 can be prevented from moving axially relative to the valve stem 110. The present invention has a simple structure, which not only reduces the number of parts, but also helps to improve service life and stability.

[0083] By providing a second limit portion 112 and a second flange 114 on the valve stem 110, the core iron 120 can be prevented from moving axially relative to the valve stem 110, thereby making the structure of the valve core assembly 180 simpler and further improving its service life and stability.

[0084] According to the electric valve of the present invention, by applying the valve core assembly 180, the structure is simpler, which can not only reduce the number of parts but also help to improve the service life and stability.

[0085] See also Figure 3 , Figure 4 , Figure 8 as well as Fig. 9For example, the valve stem 110 is configured as a variable diameter rod. The first limit portion 111 and the second limit portion 112 may be steps formed between two adjacent cylindrical surfaces with different outer diameters on the outer surface of the valve stem 110. The flange may be manufactured after the core iron 120 and the valve core 131 are installed on the valve stem 110. The structural form and specific shape of the flange are not limited herein.

[0086] See also Figure 3 and Figure 6 In addition, the electric valve may further include a valve seat 140. The valve seat 140 is disposed inside the body 100 and divides the inside of the body 100 into a first chamber 100a and a second chamber 100b. The valve stem 110 passes through the valve seat 140 and extends to the first chamber 100a and the second chamber 100b. The core iron 120 is located in the first chamber 100a. The core iron 120 is fixed relative to the valve stem 110 and can move axially in the first chamber 100a following the valve stem 110. The valve core 131 is located in the second chamber 100b. The valve core 131 is fixed relative to the valve stem 110 and can move axially in the second chamber 100b following the valve stem 110.

[0087] See also Figure 3 In addition, the electric valve may further include an elastic reset member 150. The elastic reset member 150 is connected between one of the core iron 120 and the valve core 131 and the valve seat 140 to apply an axial elastic force to the valve stem 110 through one of the core iron 120 and the valve core 131.

[0088] See also Figures 3 to 6 For example, the elastic return member 150 can be configured as a compression spring. The core iron 120 has a first connecting hole 121 for passing the valve stem 110. The end of the first connecting hole 121 facing the valve seat 140 in the axial direction is set as a first positioning portion 121a. The first positioning portion 121a is used to position one end of the compression spring. The valve seat 140 has a second connecting hole 142 for passing the valve stem 110. The end of the second connecting hole 142 facing the core iron 120 in the axial direction is set as a second positioning portion 142a. The second positioning portion 142a is used to position the other end of the compression spring. The first positioning portion 121a and the second positioning portion 142a can be configured as positioning holes.

[0089] See also Figures 3 to 6 as well as Figure 8 and Fig. 9 For example, the elastic reset member 150 is disposed between the core iron 120 and the valve seat 140. The electric valve may further include an anti-collision member 134. The anti-collision member 134 is used to prevent the valve core 131 from directly and rigidly colliding with the valve seat 140. In other words, the anti-collision member 134 is used to buffer the impact force of the valve core 131 on the valve seat 140.

[0090] In an example not shown, the impactor is connected to an end surface of the valve seat that faces the valve core in the axial direction.

[0091] exist Figure 3 , Figure 8 as well as Fig. 9 In another example shown, the impactor 134 is connected to the end surface of the valve core 131 close to the valve seat 140 in the axial direction.

[0092] Furthermore, the anti-collision member 134 is an anti-collision gasket, and specifically, it can be a gasket made of elastic metal sheet.

[0093] See also Figures 1 to 3 For example, the body 100 is provided with a first opening 100e and a second opening 100f. The first opening 100e extends in the axial direction and communicates with the second cavity 100b and the outside of the body 100. The second opening 100f extends in the radial direction of the valve stem 110 and communicates with the second cavity 100b and the outside of the body 100. The valve core assembly 180 is movably arranged between an open position and a closed position in the axial direction. The valve core assembly 180 in the open position allows the first opening 100e to communicate with the second opening 100f. The valve core assembly 180 in the closed position blocks at least one of the first opening 100e and the second opening 100f to prevent the first opening 100e from communicating with the second opening 100f.

[0094] exist Figure 3 In the example shown, when the valve core assembly 180 is in the closed position, the valve core assembly 180 seals the first opening 100e.

[0095] See also Figure 3 and Figure 8 In addition, the valve core assembly 180 may further include a sealing gasket 132 and a fixed gasket 133. The sealing gasket 132 is configured as a soft elastic member. The sealing gasket 132 is connected to the end of the valve core 131 facing the first opening 100e in the axial direction. The outer diameter of the sealing gasket 132 is larger than the inner diameter of the first opening 100e. The sealing gasket 132 is used to seal the first opening 100e when the valve core assembly 180 is in the closed position. The fixed gasket 133 is connected to the end of the sealing gasket 132 facing the first opening 100e in the axial direction. The outer diameter of the fixed gasket 133 is smaller than the inner diameter of the first opening 100e.

[0096] exist Figure 3 and Figure 8 In the example shown, a sealing groove may be provided at the end of the valve core 131 facing the sealing gasket 132. The sealing gasket 132 is accommodated in the sealing groove. A fixing groove may be provided at the end of the sealing gasket 132 facing the fixing gasket 133. The fixing groove accommodates the fixing gasket 133. By such an arrangement, the axial dimension of the valve core 131 can be reduced, which is conducive to miniaturization of the axial dimension of the electric valve.

[0097] See also Figure 3 and Figure 8 Furthermore, the end surface of the valve core 131 facing the base 101, the end surface of the sealing gasket 132 facing the base 101, and the surface of the fixing gasket 133 facing away from the valve core 131 are arranged flush.

[0098] Optionally, when the valve core assembly 180 is in the closed position, the core iron 120 is spaced apart from the valve seat 140 in the axial direction (see Figure 3 ). When the valve core assembly 180 is in the open position, the core iron 120 is axially spaced from the end wall of the first chamber 100a facing the valve seat 140. This is beneficial to protecting the core iron 120, thereby increasing the service life of the core iron 120.

[0099] See also Figure 3 and Figure 6 For example, an accommodating groove 141 is provided at the end of the valve seat 140 facing the first opening 100e in the axial direction. The electric valve may further include a guide washer 160. The guide washer 160 is fixedly connected to the inner wall of the accommodating groove 141. The guide washer 160 is sleeved on the outside of the valve core 131. The guide washer 160 is used to seal and fit to the outer peripheral surface of the valve core 131. The guide washer 160 is axially guided and fit to the valve core 131, that is, the valve core 131 can slide relative to the guide washer 160 in the axial direction.

[0100] exist Figure 3 and Figure 6 In the example shown, an annular groove extending in the circumferential direction is formed on the inner wall of the receiving groove 141 of the valve seat 140. The guide washer 160 is installed in the annular groove.

[0101] See also Figure 3 For example, a coil accommodating chamber 100g is formed inside the body 100. The coil accommodating chamber 100g is located outside the first chamber 100a. The electric valve may further include a coil component 170. The coil component 170 is located in the coil accommodating chamber 100g. The coil component 170 is configured to apply a magnetic field force to the core iron 120 in an energized state, so that the core iron 120 drives the valve core 131 to move axially via the valve stem 110.

[0102] See also Figure 3 Further, the valve core 131 divides the second chamber 100b into a first accommodating chamber 100c and a second accommodating chamber 100d. At least one of the valve core 131 and the valve stem 110 forms a balancing flow channel. The balancing flow channel is connected to the first accommodating chamber 100c and the second accommodating chamber 100d to balance the pressure difference between the first accommodating chamber 100c and the second accommodating chamber 100d.

[0103] exist Figure 3 and Figure 8In the example shown, the valve stem 110 is formed with a first balancing flow channel 117, which is connected to the first accommodating chamber 100c and the second accommodating chamber 100d. The first balancing flow channel 117 includes an axial hole 115 and a radial hole 116. The axial hole 115 is configured to extend from the end of the valve stem 110 extending to the second accommodating chamber 100d along the axial direction of the valve stem 110 to the portion of the valve stem 110 corresponding to the first accommodating chamber 100c. The radial hole 116 is configured to extend from the end of the axial hole 115 away from the second accommodating chamber 100d along the radial direction of the valve stem 110 to the first accommodating chamber 100c.

[0104] exist Fig. 9 In another example shown, the valve core 231, the sealing gasket 232 and the fixed gasket 233 form a second balancing flow channel 235. The second balancing flow channel 235 is connected to the first accommodating chamber 100c and the second accommodating chamber 100d. The valve core 231 is provided with a first through hole 231a extending axially. The sealing gasket 232 is provided with a second through hole 232a extending axially. The fixed gasket 233 is provided with a third through hole 233a extending axially. The first through hole 231a, the second through hole 232a and the third through hole 233a are connected in sequence along the axial direction to form the second balancing flow channel 235. The valve stem 210 in the figure is provided with a blind hole only along the axial direction at the end, so as to be processed into a flanging structure by stamping or the like.

[0105] The utility model also provides an air suspension. The air suspension includes an air spring and the above-mentioned electric valve. The air spring includes a main air chamber and a secondary air chamber. The electric valve is arranged inside the air spring. The electric valve has a first opening 100e and a second opening 100f. One of the first opening 100e and the second opening 100f is connected to the main air chamber. The other of the first opening 100e and the second opening 100f is connected to the secondary air chamber. The electric valve is equivalent to being connected in series between the main air chamber and the secondary air chamber. The electric valve is configured to close the air path between the main air chamber and the secondary air chamber in a power-on state, and to open the air path between the main air chamber and the secondary air chamber in a power-off state.

[0106] According to the air suspension of the utility model, an electric valve is arranged between the main air chamber and the auxiliary air chamber of the air spring, so as to adjust the connection and closing of the air path between the main air chamber and the auxiliary air chamber. Since the electric valve has a simple and reliable structure, it is beneficial to the stability of the air suspension in operation for a longer time.

[0107] The utility model also provides a vehicle, which comprises the electric valve or the air suspension.

[0108] According to the vehicle of the utility model, by applying the above-mentioned electric valve or air suspension, the stability and reliability of the vehicle's vibration reduction performance can be improved, which is beneficial to improving the user experience.

[0109] See also Figures 1 to 9 According to the utility model, the electric valve for vehicle is used to be arranged in the air spring and divide the air spring into the main air chamber and the auxiliary air chamber. The electric valve includes a body 100, a valve core 131, a coil assembly, a valve stem 110, a spring and a core iron 120. The body 100 includes a valve seat 140, a shell 102, a magnetic isolation tube 104, a magnetic conductive ring 105 and a sealing seat 103; the coil assembly includes a coil component 170 and an electrical terminal 106. A second cavity 100b is formed between the valve seat 140 and the base 101. The valve core 131 is placed in the second cavity. The valve core 131 is connected to the core iron 120 through the valve stem 110. The spring is placed between the core iron 120 and the valve seat 140. The magnetic isolation tube 104 is externally arranged outside the core iron 120 and connected to the valve seat 140. The magnetic conductive ring 105 is placed between the coil component 170 and the electrical terminal 106. The coil component 170 is connected to the electrical terminal 106 and then sleeved on the outside of the magnetic isolation tube 104. The base 101, valve seat 140, magnetic isolation tube 104, magnetic ring 105, valve stem 110, spring, core iron 120 and coil assembly are assembled together through the housing 102. At the same time, the sealing seat 103 is fixed to the outer periphery of the housing 102 and the coil assembly.

[0110] When powered on, the coil component 170 generates a magnetic field to drive the core iron 120 to move toward the base 101 and seal the valve core 131 with the base 101, thereby achieving the purpose of closing the air path between the main air chamber and the auxiliary air chamber of the air spring.

[0111] The sealing gasket 132 is placed between the valve core 131 and the fixing plate. The valve stem 110 passes through the valve core 131. The valve stem 110 abuts against the upper end surface of the valve core 131 through the first limit portion 111. The end of the valve stem 110 is formed into a flange by processing to abut against the fixing gasket 133. The valve stem 110, the sealing gasket 132, the valve core 131 and the fixing gasket 133 are fixed to each other.

[0112] A ring is arranged on the valve seat 140 and placed in the inner balancing groove. When the valve core 131 moves in the valve seat 140 , it will be guided and sealed by the guide gasket 160 .

[0113] In order to ensure the smooth opening and closing of the valve core assembly 180, a pressure balance hole such as the above-mentioned balance flow channel can be added to any part such as the valve stem 110 and the valve core 131. According to actual conditions, the valve core 131 can be considered to be provided with a shrinkage or other structural form to further fix the sealing gasket.

[0114] The structure is easy to install, the sealing gasket 132 is not easy to fall off, the product is more reliable, the parts are conventional parts, and the processing technology is also simple.

[0115] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art in the technical field of the present invention. The terms used herein are only for describing specific implementation purposes and are not intended to limit the present invention. Terms such as "setting" appearing in this article may indicate that one component is directly attached to another component, or that one component is attached to another component through an intermediate. Features described in this article in one embodiment may be applied to another embodiment alone or in combination with other features, unless the feature is not applicable in the other embodiment or otherwise specified.

[0116] The utility model has been described through the above embodiments, but it should be understood that the above embodiments are only for the purpose of example and description, and are not intended to limit the utility model to the described embodiments. It can be understood by those skilled in the art that more variations and modifications can be made according to the teachings of the utility model, and these variations and modifications all fall within the scope of the protection claimed by the utility model.

Claims

1. A valve core assembly, characterized in that: The valve core assembly comprises: A valve stem, wherein one end of the valve stem along the axial direction is provided with a first limit portion and a first flange, and the first flange and the first limit portion are spaced apart along the axial direction; and A valve core is sleeved on the outside of the valve stem, at least part of the valve core is located between the first limiting portion and the first flange, and the first limiting portion and the first flange are suitable for limiting the valve core in the axial direction.

2. The valve core assembly according to claim 1, characterized in that: The other end of the valve stem along the axial direction is provided with a second limiting portion and a second flange, and the first flange and the first limiting portion are spaced apart along the axial direction. The valve core assembly also includes: The core iron is sleeved on the outside of the valve stem, and at least part of the core iron is located between the second limiting portion and the second flange. The second limiting portion and the second flange are suitable for limiting the core iron in the axial direction.

3. The valve core assembly according to claim 1, characterized in that: The valve core assembly also includes: A sealing gasket is disposed between the first flange and the valve core, and is suitable for sealing a first opening of the electric valve.

4. The valve core assembly according to claim 3, characterized in that: The valve core assembly also includes: A fixed gasket is connected between the first flange and the sealing gasket, and the outer diameter of the fixed gasket is smaller than the outer diameter of the sealing gasket.

5. The valve core assembly according to claim 3, characterized in that: The valve core assembly further includes an anti-collision member connected to an end surface of the valve core away from the sealing gasket along the axial direction.

6. An electric valve for air suspension, characterized in that: The electric valve comprises a body; and According to the valve core assembly according to any one of claims 1 to 5, the valve core assembly is movably arranged in the interior of the body along the axial direction.

7. The electric valve according to claim 6, characterized in that: The electric valve further comprises a valve seat, which is arranged inside the body and divides the inside of the body into a first chamber and a second chamber; The valve stem passes through the valve seat and extends to the first cavity and the second cavity; The valve core assembly also includes a core iron, which is located in the first cavity and fixedly connected to the valve stem, and the valve core is located in the second cavity and fixedly connected to the valve stem.

8. The electric valve according to claim 7, characterized in that: The electric valve further includes an elastic return member connected between one of the core iron and the valve core and the valve seat so as to apply a return force along the axial direction to the valve stem through one of the core iron and the valve core.

9. The electric valve according to claim 8, characterized in that: The elastic return member is arranged between the core iron and the valve seat. The electric valve also includes an anti-collision member, wherein The anti-collision member is connected to the end surface of the valve seat facing the valve core along the axial direction; and / or The anti-collision member is connected to an end surface of the valve core facing the valve seat along the axial direction.

10. The electric valve according to any one of claims 7 to 9, characterized in that: The body is provided with a first opening and a second opening, the first opening extending along the axial direction and communicating with the second cavity and the outside of the body, and the second opening extending along the radial direction of the valve stem and communicating with the second cavity and the outside of the body; The valve core assembly is movably arranged along the axial direction between an open position and a closed position. The valve core assembly located at the open position allows the first opening to communicate with the second opening, and the valve core assembly located at the closed position prevents the first opening from communicating with the second opening.

11. The electric valve according to claim 10, characterized in that: The valve seat is provided with an accommodating groove; The electric valve further comprises: A guide washer is fixed to the accommodating groove and is suitable for being sleeved on the outside of the valve core. The guide washer is used for sealingly cooperating with the outer peripheral surface of the valve core.

12. The electric valve according to claim 10, characterized in that: The valve core divides the second cavity into a first accommodating cavity and a second accommodating cavity. At least one of the valve core and the valve stem forms a balancing flow channel, and the balancing flow channel connects the first accommodating cavity and the second accommodating cavity.

13. An air suspension, characterized in that: The air suspension comprises: an air spring, the air spring comprising a main air chamber and a secondary air chamber; and According to any one of claims 6 to 12, the electric valve is arranged inside the air spring, the electric valve has a first opening and a second opening, one of the first opening and the second opening is connected to the main air chamber, and the other of the first opening and the second opening is connected to the auxiliary air chamber, and the electric valve is configured to be able to control the on-off of the air path between the main air chamber and the auxiliary air chamber.

14. A vehicle, characterized in that: The vehicle comprises an electric valve as claimed in any one of claims 6 to 12 or an air suspension as claimed in claim 13 .

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