Electric control valve, air spring, active suspension and vehicle

Abstract

The utility model relates to an electric control valve, an air spring, an active suspension and a vehicle. The electric control valve comprises a shell, a transmission terminal and a sealing seat, and the transmission terminal is located at the axial end of the shell; the sealing seat is arranged at one end, close to the transmission terminal, of the shell, and the sealing seat is in sealing connection with the transmission terminal and the shell. According to the electric control valve, the sealing seat is connected with the transmission terminal and the shell in the sealed mode so that the interior of the shell can be isolated from the outside, it can be prevented that outside impurities or water invades and influences normal work of important components such as a coil in the shell, the sealing performance of the electric control valve is improved, and the electric control valve has higher reliability.

Description

Technical Field

[0001] The present application relates to the field of electronically controlled valves, and in particular to an electronically controlled valve, an air spring, an active suspension and a vehicle. Background Art

[0002] The electronically controlled valve controls the opening and closing of the valve by electric means to connect or separate the closed cavity. In a closed cavity such as an air spring, the airbag includes a main air chamber and a secondary air chamber. The electronically controlled valve is arranged between the main air chamber and the secondary air chamber to control the stiffness of the air spring.

[0003] The electric control valve contains multiple components that work together to achieve functions. There are gaps between the components. External impurities or moisture can easily penetrate into the electric control valve through the gaps, affecting the normal operation of important components such as the coil. Utility Model Content

[0004] In view of the above technical problems, the purpose of the present application is to provide an electrically controlled valve capable of sealing a coil, an air spring comprising the electrically controlled valve, an active suspension comprising the electrically controlled valve or the air spring, and a vehicle comprising the electrically controlled valve or the air spring or the active suspension. Specifically, the present application provides the following technical solutions:

[0005] In a first aspect, an embodiment of the present application provides an electrically controlled valve, comprising a shell, a transmission terminal and a sealing seat, wherein the transmission terminal is located at one axial end of the shell; the sealing seat is arranged at one end of the shell close to the transmission terminal, and the sealing seat is respectively sealed and connected to the transmission terminal and the shell.

[0006] The sealing seat of the electric control valve of the present application is sealed with the transmission terminal and the shell respectively to reliably isolate the inside of the shell from the outside world, thereby preventing the intrusion of external impurities or moisture from affecting the normal operation of important components such as the coil, improving the sealing performance of the electric control valve and making it more reliable.

[0007] In one embodiment, the sealing seat is sleeved on the periphery of the transmission terminal, and the electrically controlled valve includes a first sealing member, which is arranged between the inner circumference of the sealing seat and the outer circumference of the transmission terminal to seal the transmission terminal and the sealing seat.

[0008] In this embodiment, the sealing seat is sealed and connected to the transmission terminal through the first sealing member, thereby improving the sealing effect and ensuring the normal operation of important components such as the coil.

[0009] In one embodiment, the first sealing member is a sealing ring, and a groove is provided on the inner circumference of the sealing seat and / or the outer circumference of the transmission terminal, and the groove is used to accommodate the sealing ring.

[0010] In this embodiment, at least one of the inner circumference of the sealing seat and the outer circumference of the transmission terminal is provided with a groove, the groove can accommodate the sealing ring, and the sealing seat is sealed and connected to the transmission terminal through the sealing ring, thereby sealing the receiving cavity.

[0011] In one embodiment, the first sealing member is a sealant, a gap is left between the inner circumference of the sealing seat and the outer circumference of the transmission terminal, and the sealant fills the gap to seal the transmission terminal and the sealing seat.

[0012] In this embodiment, the sealant fills the gap between the inner circumference of the sealing seat and the outer circumference of the transmission terminal, so that the sealing seat is sealed and connected to the transmission terminal through the sealant, and the sealed receiving cavity can also be realized.

[0013] In one embodiment, the outer circumference diameter of the transmission terminal is larger than the inner circumference diameter of the sealing seat in a natural state, and the sealing seat is elastically deformed and sleeved on the transmission terminal to achieve sealing.

[0014] In this embodiment, the size of the outer circumference of the transmission terminal is larger than the size of the inner circumference of the sealing seat. When the sealing seat is installed on the transmission terminal, the sealing seat undergoes elastic deformation, and the sealing seat and the transmission terminal have an interference fit, which can also make the sealing seat and the transmission terminal sealed and connected, thereby realizing a sealed receiving cavity.

[0015] In one embodiment, the electrically controlled valve comprises a second sealing member, which is disposed between the sealing seat and the housing to seal the housing and the sealing seat.

[0016] In this embodiment, the sealing seat is sealed and connected to the housing through the second sealing member, thereby improving the sealing effect and ensuring the normal operation of important components such as the coil.

[0017] In one embodiment, the sealing seat is sleeved outside the shell, and the second sealing member is located between the inner circumference of the sealing seat and the outer circumference of the shell.

[0018] In this embodiment, the sealing seat is sleeved outside the shell, a second sealing member is provided between the inner circumference of the sealing seat and the outer circumference of the shell, and the sealing seat is sealedly connected to the shell through the second sealing member to seal the inside of the shell.

[0019] In one embodiment, at least a portion of an end surface of the sealing seat abuts against the housing, and the second sealing member is located between the end surface of the sealing seat and the outer surface of the housing.

[0020] In this embodiment, one end of the sealing seat abuts against the shell, and a second sealing member is provided between the end surface of the abutting end and the outer surface of the shell. The sealing seat is sealed to the shell through the second sealing member to seal the inside of the shell.

[0021] In one embodiment, the electric control valve includes a coil and a valve body. The valve body is disposed in a shell. The inner wall of the shell and the outer wall of the valve body are spaced apart from each other to form a receiving cavity. The coil is located in the receiving cavity and is electrically connected to the transmission terminal.

[0022] In one embodiment, the electrically controlled valve includes a third sealing member, which surrounds the valve body and is located at an end of the valve body away from the transmission terminal, and is used to seal the valve body and the housing.

[0023] In this embodiment, the end of the valve body away from the transmission terminal is sealed and connected to the shell through a third seal, which improves the sealing effect of the accommodating cavity, ensures that the inside of the shell is isolated from the outside, and enables important components such as the coil inside the shell to work normally.

[0024] In one embodiment, the electrically controlled valve includes a valve core, and the valve body includes a valve cavity for accommodating the valve core. The coil controls the valve core to slide in the valve cavity by turning on and off electricity to open or close the electrically controlled valve.

[0025] In this embodiment, a coil is provided on the outer wall of the valve body, and a valve core is provided inside the valve body. When the coil is energized, a magnetic field is generated to drive the valve core to slide. The valve core slides in the valve cavity by switching the coil on and off to open or close the electric control valve, thereby realizing the on and off of the electric control valve.

[0026] In the second aspect, an embodiment of the present application also provides an air spring, which includes an airbag and the above-mentioned electric control valve. The airbag includes a main air chamber and an auxiliary air chamber. The electric control valve is arranged between the main air chamber and the auxiliary air chamber, and is used to separate or connect the main air chamber and the auxiliary air chamber in the air spring, thereby realizing the adjustment of the stiffness of the air spring.

[0027] The air spring of the present application has improved sealing performance of the air spring and has higher reliability because the above-mentioned electric control valve is adopted.

[0028] In a third aspect, an embodiment of the present application further provides an active suspension, and the active suspension includes the above-mentioned air spring or the above-mentioned electronically controlled valve.

[0029] In a fourth aspect, an embodiment of the present application further provides a vehicle, the vehicle comprising the above-mentioned active suspension or the above-mentioned air spring or the above-mentioned electronically controlled valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the internal cross-section of an electrically controlled valve provided in one embodiment of the present application;

[0031] Figure 2 This is a schematic diagram of the structure of an electrically controlled valve provided in one embodiment of the present application;

[0032] Figure 3A schematic diagram of the structure of the electric control valve in another direction provided in one embodiment of the present application;

[0033] Figure 4 A partial cross-sectional schematic diagram of an electrically controlled valve provided in one embodiment of the present application;

[0034] Figure 5 A partial schematic diagram of a partial cross section of an electric control valve provided in an embodiment of the present application;

[0035] Figure 6 A partial schematic diagram of a partial cross section of an electric control valve provided in another embodiment of the present application;

[0036] Figure 7 A partial schematic diagram of a partial cross section of an electric control valve provided in another embodiment of the present application;

[0037] Figure 8 A partial schematic diagram of a partial cross section of an electric control valve provided in another embodiment of the present application;

[0038] Fig. 9 A partial schematic diagram of a partial cross section of an electric control valve provided in another embodiment of the present application;

[0039] Fig.10 It is a partial schematic diagram of a partial cross section of an electric control valve provided in another embodiment of the present application. DETAILED DESCRIPTION

[0040] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present application are given in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thoroughly and comprehensively understood.

[0041] The following descriptions of the embodiments are with reference to the attached diagrams to illustrate specific embodiments that the present application can be used to implement. The serial numbers for the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in the present application, unless otherwise specified, include direct and indirect connections (couplings). The directional terms mentioned in the present application, such as "upper", "lower", "front", "back", "left", "right", "inside", "outside", "side", etc., are only with reference to the directions of the attached drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the present application, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0043] The present application relates to a vehicle, which includes an active suspension or an air spring or an electric control valve, wherein the active suspension includes the above-mentioned air spring or electric control valve, and the air spring includes an airbag and an electric control valve. There is gas in the airbag, and the elastic effect of the air spring is achieved by utilizing the compressibility of the gas. The airbag includes a main air chamber and a secondary air chamber, and the main air chamber is mainly used to bear external loads and compress the internal gas. The secondary air chamber is used to adjust the stiffness of the air spring. When the main air chamber is connected to the secondary air chamber, the volume in the main air chamber increases, and the internal gas is more easily compressed, so that the stiffness of the air spring is reduced.

[0044] The electric control valve of the present application is arranged between the main air chamber and the auxiliary air chamber to connect or separate the main air chamber and the auxiliary air chamber, thereby changing the stiffness of the air spring.

[0045] See also Figure 1 , Figure 2 and Figure 3 ,in, Figure 1 The internal cross-sectional diagram of the electric control valve 100 provided in one embodiment of the present application is illustrated; Figure 2 The schematic diagram of the structure of the electric control valve 100 provided in one embodiment of the present application is shown; Figure 3 A schematic diagram of the structure of the electric control valve 100 provided in one embodiment of the present application in another direction is illustrated.

[0046] The electric control valve 100 provided in the present application includes a shell 50, a transmission terminal 20 and a sealing seat 60. The transmission terminal 20 is located at one axial end of the shell 50. The sealing seat 60 is arranged at one end of the shell 50 facing the transmission terminal 20. The sealing seat 60 is sealed and connected to the transmission terminal 20 and the shell 50 respectively. The sealing seat 60 separates the interior of the shell 50 from the outside.

[0047] Specifically, in one embodiment, the electric control valve 100 includes a housing 50, a valve body 10, a coil 40, a transmission terminal 20 and a sealing seat 60. The valve body 10 is roughly columnar. The housing 50 is arranged outside the valve body 10. The housing 50 has a receiving cavity 51. The valve body 10 is received and fixed in the receiving cavity 51 of the housing 50. The outer wall of the valve body 10 and the inner wall of the housing 50 are spaced from each other to form a receiving cavity. The coil 40 is located in the receiving cavity and is wound on the outer wall of the valve body 10. The transmission terminal 20 is arranged along the spiral axial direction of the coil 40 and is located at one end of the axial direction of the valve body 10. One end of the transmission terminal 20 is electrically connected to the coil 40, and the other end can extend out of the housing 50 to connect to the power supply so that the coil 40 is conductive to the power supply.

[0048] In one embodiment, if Figure 1 As shown, the electric control valve 100 further includes a valve core 30, and the coil 40 can be powered on and off to control the valve core 30 to slide in the valve cavity 13 of the valve body 10 to open or close the electric control valve 100. The valve body 10 includes a valve port 11 and an opening 12, and the valve port 11 and the opening 12 are respectively connected to the valve cavity 13, the valve port 11 is located at one end of the valve body 10 away from the transmission terminal 20, and the opening 12 is located on the outer side wall of the valve body 10, and the valve core 30 includes an iron core 31 and a connecting rod 32, and the iron core 31 is located at one end of the valve core 30 facing the transmission terminal 20, and the iron core 31 is fixedly connected to the valve body 10 through the connecting rod 32.

[0049] It can be understood that when the power is turned on, the current passes through the coil 40 and forms a magnetic field, which can magnetize the iron core 31 at one end of the valve core 30, and the magnetized iron core 31 slides under the action of the magnetic field. The direction of the current in the control coil 40 can control the sliding direction of the iron core 31 in the valve cavity 13. The iron core 31 slides toward the valve port 11 under the action of the magnetic field, thereby realizing the sliding of the valve core 30. The size of the end face of the valve core 30 is larger than the size of the valve port 11, and the end face of the valve core 30 can completely cover the valve port 11, so that the valve port 11 is separated from the opening 12, thereby closing the electric control valve 100.

[0050] When the power is off, the coil 40 is not energized, and the valve core 30 fails to completely cover the valve port 11. At this time, the valve port 11 and the opening 12 are connected to each other. Therefore, controlling the position of the valve core 30 relative to the valve port 11 can control the on-off of the electric control valve 100, thereby separating or connecting the valve port 11 and the opening 12. The valve port 11 and the opening 12 are respectively connected to two relatively independent air chambers in the airbag, that is, controlling the on-off of the electric control valve 100 can achieve the connection or separation of the two relatively independent air chambers.

[0051] The sealing seat 60 is disposed at one end of the housing 50 facing the transmission terminal 20, and the sealing seat 60 is sealed and connected to the transmission terminal 20 and the housing 50 respectively. In this way, the end of the receiving cavity close to the transmission terminal 20 can be reliably sealed. It can be understood that in one embodiment, Figure 1 As shown, the sealing seat 60 is sealed and connected to the shell 50 and the transmission terminal 20 respectively, and the outer wall of the valve body 10 is provided with a third sealing member 73, and the third sealing member 73 is sealed and connected between the outer wall of the valve body 10 and the inner wall of the shell 50, so that the receiving cavity is sealed, thereby isolating the receiving cavity from the outside.

[0052] During the operation of the air spring, one of the air chambers needs to bear the load, namely the main air chamber, and the other air chamber is the auxiliary air chamber. When the load gradually increases, the volume of the main air chamber decreases, and the gas inside the main air chamber is compressed. When the load gradually decreases, the volume of the main air chamber increases, and the compression rate of the gas inside the main air chamber decreases. When the electric control valve 100 is closed, the main air chamber is separated from the auxiliary air chamber, the volume of the main air chamber is smaller, and the stiffness of the air spring is larger. When the electric control valve 100 is opened, the main air chamber is connected to the auxiliary air chamber, the volume of the main air chamber is larger, and the gas is more easily compressed, making the stiffness of the air spring smaller.

[0053] It can be understood that controlling the magnitude of the current passing through the coil 40 can control the electromagnetic force on the iron core 31, control the position of the valve core 30 relative to the valve port 11, and thus change the size of the connecting flow channel between the valve port 11 and the opening 12. By controlling the size of the connecting flow channel between the main air chamber and the auxiliary air chamber, the pressure difference when the gas flows between the air chambers can be changed, and the stiffness of the air spring can also be changed. At this time, the stiffness of the air spring is between the stiffness of the air spring when the electric control valve 100 is fully opened and the stiffness of the air spring when the electric control valve 100 is closed.

[0054] The outer wall of the valve body 10 of the electric control valve 100 of the present application can be provided with a coil 40, and a valve core 30 can be provided inside the valve body 10. When the coil 40 is energized, a magnetic field is generated to drive the valve core 30 to slide. By turning the coil 40 on and off, the valve core 30 is controlled to cover or open the valve port 11, so as to realize the on and off of the electric control valve 100.

[0055] As the working time of the air spring increases, external impurities or moisture can easily penetrate into the interior of the electric control valve 100 through the gaps between the components of the electric control valve 100, which may affect the normal operation of important components such as the coil 40, thereby reducing the reliability of the air spring.

[0056] The sealing seat 60 of the electric control valve 100 of the present application is sealed and connected to the transmission terminal 20 and the shell 50 respectively to seal the receiving cavity and isolate the receiving cavity from the outside world. This can prevent external impurities or moisture from invading and affecting the normal operation of important components such as the coil 40, thereby improving the sealing performance of the electric control valve 100 and making it more reliable.

[0057] It should be pointed out that the electric control valve 100 of the present application can be applied to the above-mentioned air spring as a component for separating airbags and adjusting the volume of the main air chamber in the airbag. However, the electric control valve 100 is not limited to be used only in air springs. In other sealing systems that need to separate or connect closed spaces, the electric control valve 100 of the present application is also applicable and has better sealing performance.

[0058] See also Figure 4 A partial cross-sectional schematic diagram of an electrically controlled valve 100 provided in one embodiment of the present application is shown.

[0059] In one embodiment, if Figure 4 As shown, the sealing seat 60 can be at least partially located outside the shell 50, and the sealing seat 60 is sleeved on the periphery of the transmission terminal 20. The electric control valve 100 includes a first sealing member 71, and the first sealing member 71 is arranged between the inner circumference of the sealing seat 60 and the outer circumference of the transmission terminal 20, so that the sealing seat 60 is sealed and connected with the transmission terminal 20, thereby improving the sealing effect of the receiving cavity and preventing external impurities or moisture from invading the receiving cavity through the gap between the sealing seat 60 and the transmission terminal 20, thereby affecting the normal operation of important components such as the coil 40 in the receiving cavity.

[0060] See also Figure 5 and Figure 6 ,in, Figure 5 A partial schematic diagram of a partial cross section of an electric control valve 100 provided in one embodiment of the present application is illustrated; Figure 6 A partial schematic diagram of a partial cross section of an electric control valve 100 provided in another embodiment of the present application is illustrated.

[0061] In one embodiment, if Figure 5 and Figure 6 As shown, the first sealing member 71 is a first sealing ring 711. A groove is provided on the inner circumferential surface of the sealing seat 60. The groove is used to accommodate the first sealing ring 711. The first sealing ring 711 is sleeved outside the transmission terminal 20 and fills the groove and the gap between the sealing seat 60 and the transmission terminal 20 to achieve a sealed connection between the sealing seat 60 and the transmission terminal 20.

[0062] In another embodiment, a groove is provided on the outer circumferential surface of the transmission terminal 20 , and the groove is used to accommodate the first sealing ring 711 to achieve a sealed connection between the sealing seat 60 and the transmission terminal 20 .

[0063] In another embodiment, the inner circumferential surface of the sealing seat 60 and the outer circumferential surface of the transmission terminal 20 are both provided with grooves, and the groove of the sealing seat 60 and the groove of the transmission terminal 20 at least partially overlap along the length direction of the transmission terminal 20, and a first sealing ring 711 is provided in the groove to achieve a sealed connection between the sealing seat 60 and the transmission terminal 20.

[0064] In another embodiment, the inner circumference of the sealing seat 60 and the outer circumference of the transmission terminal 20 are both provided with grooves, and the grooves of the sealing seat 60 and the grooves of the transmission terminal 20 are both provided with first sealing rings 711 to achieve a sealed connection between the sealing seat 60 and the transmission terminal 20.

[0065] In some embodiments, Figure 5 and Figure 6As shown, the sealing seat 60 is sleeved on the outside of the transmission terminal 20, and the sealing seat 60 and the transmission terminal 20 are at least partially in contact with each other. A first sealing ring 711 is provided between the sealing seat 60 and the transmission terminal 20, so that the sealing seat 60 and the transmission terminal 20 are sealed and connected.

[0066] In other embodiments, the sealing seat 60 is sleeved on the outside of the transmission terminal 20, and the sealing seat 60 and the transmission terminal 20 are spaced apart from each other. A first sealing ring 711 is provided between the sealing seat 60 and the transmission terminal 20 to fill at least part of the gap, so that the sealing seat 60 and the transmission terminal 20 can also be sealed and connected.

[0067] See also Figure 7 and Figure 8 ,in, Figure 7 A partial schematic diagram of a partial cross section of an electric control valve 100 provided in another embodiment of the present application is shown; Figure 8 A partial schematic diagram of a partial cross section of an electric control valve 100 provided in another embodiment of the present application is illustrated.

[0068] In one embodiment, if Figure 7 As shown, the first sealing member 71 is a first sealant 712 , and the inner circumference of the sealing seat 60 and the outer circumference of the transmission terminal 20 are spaced apart from each other. The first sealant 712 can fill the gap between the sealing seat 60 and the transmission terminal 20 to achieve a sealed connection between the sealing seat 60 and the transmission terminal 20 .

[0069] In another embodiment, if Figure 8 As shown, the inner circumference of the sealing seat 60 fits with the outer circumference of the transmission terminal 20 , and the outer circumference of the transmission terminal 20 is provided with a groove, and the first sealant 712 is filled in the groove to achieve a sealed connection between the sealing seat 60 and the transmission terminal 20 .

[0070] In another embodiment, the inner circumference of the sealing seat 60 and the outer circumference of the transmission terminal 20 are spaced from each other, and a groove is provided on the outer circumference of the transmission terminal 20, and the first sealant 712 is filled in the groove and the gap between the sealing seat 60 and the transmission terminal 20 to achieve a sealed connection between the sealing seat 60 and the transmission terminal 20. Compared with only filling the gap between the sealing seat 60 and the transmission terminal 20, providing the groove can increase the thickness of the first sealant 712, thereby improving the sealing effect of the first sealant 712.

[0071] In other embodiments, grooves may be provided on the inner circumference of the sealing seat 60 and / or the outer circumference of the transmission terminal 20, and the first sealant 712 is filled in the grooves and gaps to achieve a sealed connection with a better sealing effect.

[0072] It can be understood that the larger the size of the grooves on the inner circumference of the sealing seat 60 and the outer circumference of the transmission terminal 20 along the length direction of the transmission terminal 20, the better the sealing effect obtained after the first sealant 712 fills the grooves. Fig. 9 and Fig.10 ,in, Fig. 9 A partial schematic diagram of a partial cross section of an electric control valve 100 provided in another embodiment of the present application is shown; Fig.10 A partial schematic diagram of a partial cross section of an electric control valve 100 provided in another embodiment of the present application is illustrated.

[0073] In one embodiment, if Fig. 9 and Fig.10 As shown, the outer circumferential surface diameter of the transmission terminal 20 is larger than the inner circumferential surface diameter of the sealing seat 60 in a natural state. The sealing seat 60 is an elastic component. After the sealing seat 60 is elastically deformed, it is sleeved on the periphery of the transmission terminal 20. The sealing seat 60 and the transmission terminal 20 are interference fit to achieve a sealed connection between the sealing seat 60 and the transmission terminal 20.

[0074] In another embodiment, the transmission terminal 20 is an elastic component. After the transmission terminal 20 is elastically deformed, the sealing seat 60 is sleeved on the periphery of the transmission terminal 20. The sealing seat 60 and the transmission terminal 20 are interference fit to achieve a sealed connection between the sealing seat 60 and the transmission terminal 20.

[0075] In another embodiment, the transmission terminal 20 and the sealing seat 60 are both elastic components. After the sealing seat 60 is sleeved on the transmission terminal 20, the transmission terminal 20 and the sealing seat 60 are both elastically deformed to achieve a sealed connection between the sealing seat 60 and the transmission terminal 20.

[0076] In a preferred embodiment, the transmission terminal 20 and the sealing seat 60 are made of a material with good elasticity such as plastic.

[0077] In one embodiment, if Figure 4 As shown, the electric control valve 100 includes a second sealing member 72, which is arranged between the sealing seat 60 and the shell 50, so that the sealing seat 60 and the shell 50 are sealed and connected, thereby improving the sealing effect of the receiving cavity and preventing external impurities or moisture from invading the receiving cavity through the gap between the sealing seat 60 and the shell 50, thereby affecting the normal operation of important components such as the coil 40 in the receiving cavity.

[0078] It should be noted that there are two matching modes between the sealing seat 60 and the shell 50 . One matching mode is that the sealing seat 60 is sleeved on the outside of the shell 50 , and the other matching mode is that the end surface of the sealing seat 60 abuts against the shell 50 .

[0079] Based on different matching modes, the second sealing member 72 is disposed at different positions. For the matching mode of "the sealing seat 60 is at least partially sleeved on the outside of the housing 50", specifically, in this embodiment, the sealing seat 60 is sleeved outside the housing 50, and the second sealing member 72 is located between the inner circumference of the sealing seat 60 and the outer circumference of the housing 50, so as to achieve a sealed connection between the sealing seat 60 and the housing 50.

[0080] In one embodiment, if Figure 5 As shown, the inner circumference of the sealing seat 60 is at least partially in contact with the outer circumference of the housing 50, the second sealing member 72 is a second sealing ring 721, a groove is provided on the inner circumference of the sealing seat 60, the groove is used to accommodate the second sealing ring 721, the second sealing ring 721 is sleeved outside the housing 50 and fills the groove to achieve a sealed connection between the sealing seat 60 and the housing 50. In another embodiment, a groove is provided on the outer circumference of the housing 50, the groove is used to accommodate the second sealing ring 721, so as to achieve a sealed connection between the sealing seat 60 and the housing 50.

[0081] In another embodiment, the inner circumferential surface of the sealing seat 60 and the outer circumferential surface of the shell 50 are both provided with grooves, and the groove of the sealing seat 60 and the groove of the shell 50 at least partially overlap along the length direction of the shell 50, and a second sealing ring 721 is provided in the groove to achieve a sealed connection between the sealing seat 60 and the shell 50.

[0082] In another embodiment, the inner circumference of the sealing seat 60 and the outer circumference of the shell 50 are both provided with grooves, and the grooves of the sealing seat 60 and the grooves of the shell 50 are both provided with second sealing rings 721 to achieve a sealed connection between the sealing seat 60 and the shell 50.

[0083] In one embodiment, at least a portion of the inner circumference of the sealing seat 60 abuts against the housing 50, specifically, as Figure 6 As shown, the inner circumferential surface of the sealing seat 60 is provided with a step, the step abuts against the shell 50, and the step is provided with a groove, the groove is used to accommodate the second sealing ring 721, the second sealing ring 721 is sleeved outside the shell 50, and fills the groove and the gap between the sealing seat 60 and the shell 50 to achieve a sealed connection between the sealing seat 60 and the shell 50.

[0084] It is understandable that in one embodiment, a groove may be provided on the outer circumference of the housing 50 to accommodate the second sealing ring 721. In another embodiment, grooves may be provided on both the outer circumference of the housing 50 and the step surface of the sealing seat 60 to accommodate the second sealing ring 721.

[0085] In one embodiment, the inner circumference of the sealing seat 60 and the outer circumference of the housing 50 are spaced apart from each other, and the second sealing ring 721 can fill the gap between the sealing seat 60 and the housing 50 to achieve a sealed connection between the sealing seat 60 and the housing 50 .

[0086] In another embodiment, the inner circumference of the sealing seat 60 and the outer circumference of the housing 50 are spaced from each other, and one or more of the sealing seat 60 and the housing 50 is provided with a groove to accommodate the second sealing ring 721, and the second sealing ring 721 fills the groove and the gap between the sealing seat 60 and the housing 50, thereby achieving a sealed connection between the sealing seat 60 and the housing 50. In one embodiment, the second sealing member 72 is a second sealant 722, the inner circumference of the sealing seat 60 and the outer circumference of the housing 50 are at least partially fitted, and the inner circumference of the sealing seat 60 and / or the outer circumference of the housing 50 are provided with a groove, and the second sealant 722 is filled in the groove to achieve a sealed connection between the sealing seat 60 and the housing 50.

[0087] In one embodiment, if Figure 7 As shown, the inner circumference of the sealing seat 60 and the outer circumference of the housing 50 are spaced apart from each other, and the second sealant 722 can fill the gap between the sealing seat 60 and the housing 50 to achieve a sealed connection between the sealing seat 60 and the housing 50 .

[0088] In another embodiment, if Figure 8 As shown, the inner circumference of the sealing seat 60 and the outer circumference of the housing 50 are spaced from each other, and the inner circumference of the sealing seat 60 and / or the outer circumference of the housing 50 are provided with a groove, and the second sealant 722 is filled in the groove and the gap to achieve a sealed connection between the sealing seat 60 and the housing 50. Compared with only filling the gap between the sealing seat 60 and the housing 50, providing the groove can increase the thickness of the second sealant 722, thereby improving the sealing effect of the second sealant 722.

[0089] In one embodiment, if Fig.10 As shown, the diameter of the outer circumference of the shell 50 is larger than the diameter of the inner circumference of the sealing seat 60 in a natural state. The sealing seat 60 is an elastic component. After the sealing seat 60 is elastically deformed, it is sleeved on the outer periphery of the shell 50. The sealing seat 60 and the shell 50 are interference fit to achieve a sealed connection between the sealing seat 60 and the shell 50.

[0090] Regarding the matching mode of "the end face of the sealing seat 60 at least partially abuts against the shell 50", specifically, in the present embodiment, the end face of the sealing seat 60 at least partially abuts against the shell 50, and the second sealing member 72 is located between the end face of the sealing seat 60 and the outer surface of the shell to achieve a sealed connection between the sealing seat 60 and the shell 50.

[0091] In one embodiment, the second sealing member 72 is a second sealing ring 721, and a groove is provided on the end face of the sealing seat 60, the groove is used to accommodate the second sealing ring 721, and the second sealing ring 721 fills the groove and the gap between the sealing seat 60 and the shell 50 to achieve a sealed connection between the sealing seat 60 and the shell 50.

[0092] In another embodiment, a groove is provided on the outer surface of the housing 50 , and the groove is used to accommodate the second sealing ring 721 to achieve a sealed connection between the sealing seat 60 and the housing 50 .

[0093] In another embodiment, the end face of the sealing seat 60 and the outer surface of the shell 50 are both provided with grooves, and the groove of the sealing seat 60 and the groove of the shell 50 at least partially overlap in the radial direction of the sealing seat 60, and a second sealing ring 721 is provided in the groove to achieve a sealed connection between the sealing seat 60 and the shell 50.

[0094] In another embodiment, the inner circumference of the sealing seat 60 and the outer circumference of the shell 50 are both provided with grooves, and the grooves of the sealing seat 60 and the grooves of the shell 50 are both provided with second sealing rings 721 to achieve a sealed connection between the sealing seat 60 and the shell 50.

[0095] In one embodiment, the second sealing member 72 is a second sealant 722 , and a gap is left between the end surface of the sealing seat 60 and the outer surface of the shell 50 . The second sealant 722 can fill the gap to achieve a sealed connection between the sealing seat 60 and the shell 50 .

[0096] In another embodiment, a gap is left between the end surface of the sealing seat 60 and the outer surface of the housing 50, and a groove is provided on the end surface of the sealing seat 60 and / or the outer surface of the housing 50, and the second sealant 722 is filled in the groove and the gap to achieve a sealed connection between the sealing seat 60 and the housing 50. Compared with only filling the gap between the sealing seat 60 and the housing 50, providing the groove can increase the thickness of the second sealant 722, thereby improving the sealing effect of the second sealant 722.

[0097] The specific development of the various embodiments described above can enable the sealing seat 60 to be sealed and connected to the housing 50, thereby improving the sealing effect of the receiving cavity and further achieving a sealed receiving cavity.

[0098] In some embodiments, the sealing connection method between the sealing seat 60 and the transmission terminal 20 and the sealing connection method between the sealing seat 60 and the shell 50 can be arbitrarily combined, so that the sealing seat 60 is sealedly connected to the transmission terminal 20 and the shell 50 respectively, thereby improving the sealing effect of the receiving cavity.

[0099] In one embodiment, the electric control valve 100 includes a coil 40 and a valve body 10. The valve body 10 is disposed in a receiving cavity 51 of a shell 50. The inner wall of the shell 50 and the outer wall of the valve body 10 are spaced apart from each other to form a receiving cavity. The coil 40 is located in the receiving cavity, and the coil 40 is electrically connected to the transmission terminal 20.

[0100] In one embodiment, if Figure 1As shown, the electrically controlled valve 100 includes a third sealing member 73 , which surrounds the outer wall of the valve body 10 and is located at an end of the valve body 10 away from the transmission terminal 20 . The third sealing member 73 is used to seal the valve body 10 and the housing 50 .

[0101] In one embodiment, if Figure 1 As shown, the electric control valve 100 includes a third seal 73, and the outer wall of the valve body 10 includes an opening 12. The opening 12 is located at the end of the coil 40 away from the transmission terminal 20. The third seal 73 is located between the coil 40 and the opening 12. The third seal 73 seals the valve body 10 and the shell 50, so that the accommodating cavity is isolated from the outside.

[0102] In one embodiment, the third sealing member 73 may be a sealing ring and / or a sealant to achieve a sealed connection between the valve body 10 and the housing 50. In another embodiment, the outer side wall of the valve body 10 may also be interference-connected with the inner side wall of the housing 50 to achieve a sealed connection between the valve body 10 and the housing 50.

[0103] In one embodiment, the transmission terminal 20 includes a transmission member, one end of which is connected to the coil 40 , and the other end of which extends in a direction away from the coil 40 and is connected to a power source.

[0104] In one embodiment, the transmission terminal 20 includes a power slot, which is located at one end of the transmission terminal 20 away from the valve body 10 and is used to connect a power source. The coil 40 can be connected to the power slot through a transmission member.

[0105] In one embodiment, if Figure 1 As shown, the electrically controlled valve 100 includes a valve core 30 , and the valve body 10 includes a valve cavity 13 for accommodating the valve core 30 . The coil 40 controls the valve core 30 to slide in the valve cavity 13 by switching on and off electricity to open or close the electrically controlled valve 100 .

[0106] In another embodiment, the valve core 30 includes an iron core 31, which is fixedly connected to the valve core 30, and the coil 40 is energized to generate a magnetic field and magnetize the iron core 31. The magnetized iron core 31 can slide under the action of the magnetic field and drive the valve core 30 to slide in the valve cavity 13 to open or close the electric control valve 100.

[0107] In another embodiment, if Figure 1 As shown, the valve core 30 includes an iron core 31 and a connecting rod 32, one end of the connecting rod 32 is fixedly connected to the valve core 30, and the other end is fixedly connected to the iron core 31. The connecting rod 32 is used to drive the valve core 30 to slide toward the valve port 11 following the iron core 31 to cover the valve port 11 and realize the closing of the electric control valve 100.

[0108] In one embodiment, if Figure 1As shown, the electric control valve 100 includes a spring 80 , one end of the spring 80 abuts against the iron core 31 , and the other end abuts against the valve body 10 . The spring 80 serves as an elastic connecting member between the valve body 10 and the iron core 31 , and is used to drive the iron core 31 to reset.

[0109] Under the action of the magnetic field, the iron core 31 drives the valve core 30 to slide toward the valve port 11, and the distance between the iron core 31 and the valve body 10 gradually decreases, causing the spring 80 to compress. When the valve core 30 completely covers the valve port 11, the spring 80 is compressed to the limit position. After the coil 40 is powered off, the iron core 31 is not affected by the magnetic field force, and the spring 80 drives the iron core 31 to move away from the valve port 11. The spring 80 returns to its initial state and drives the iron core 31 back to its initial position.

[0110] It can be understood that changing the stiffness of the spring 80 can change the stiffness of the air spring. During the sliding process of the iron core 31 toward the valve port 11, the iron core 31 is acted upon by the electromagnetic force and the spring force provided by the spring 80, and the directions of the electromagnetic force and the spring force are opposite. As the iron core 31 slides, the spring force will gradually increase. When the electromagnetic force and the spring force are the same in magnitude, the iron core 31 is in a balanced state. The valve core 30 slides a certain distance toward the valve port 11, but has not completely covered the valve port 11. At this time, the connecting flow channel connecting the valve port 11 and the opening 12 is smaller than the connecting flow channel in the initial state.

[0111] Therefore, changing the stiffness of the spring 80 can change the size of the communicating flow channel, thereby changing the pressure difference when the gas flows between the air chambers, and can also change the stiffness of the air spring.

[0112] In one embodiment, if Figure 1 As shown, the electric control valve 100 includes a magnetic ring 90, which is at least partially embedded in the outer wall of the valve body 10. The magnetic ring 90 is arranged side by side with the coil 40 and is located at the end of the coil 40 away from the valve port 11. The magnetic ring 90 is used to increase the magnetic field generated by the coil 40.

[0113] In addition, the present application also provides an active suspension, including the above-mentioned air spring or the above-mentioned electronically controlled valve.

[0114] The present application also provides a vehicle, comprising the above-mentioned active suspension or the above-mentioned air spring or the above-mentioned electronically controlled valve.

[0115] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

Claims

1. An electrically controlled valve, characterized in that: include: A housing, a transmission terminal and a sealing seat, wherein the transmission terminal is located at one axial end of the housing; The sealing seat is arranged at one end of the shell facing the transmission terminal, and the sealing seat is sealed and connected to the transmission terminal and the shell respectively.

2. The electrically controlled valve according to claim 1, characterized in that: The sealing seat is sleeved on the periphery of the transmission terminal. The electrically controlled valve comprises a first sealing member, which is arranged between the inner circumference of the sealing seat and the outer circumference of the transmission terminal to seal the sealing seat and the transmission terminal.

3. The electrically controlled valve according to claim 2, characterized in that: The first sealing member is a sealing ring, and a groove is provided on the inner circumference of the sealing seat and / or the outer circumference of the transmission terminal, and the groove is used to accommodate the sealing ring.

4. The electrically controlled valve according to claim 2, characterized in that: The first sealing member is a sealant, and a gap is left between the inner circumference of the sealing seat and the outer circumference of the transmission terminal. The sealant fills the gap to seal the transmission terminal and the sealing seat.

5. The electrically controlled valve according to claim 1, characterized in that: The outer circumferential surface diameter of the transmission terminal is larger than the inner circumferential surface diameter of the sealing seat in a natural state, and the sealing seat is elastically deformed and sleeved on the transmission terminal to achieve sealing.

6. The electrically controlled valve according to any one of claims 1 to 5, characterized in that: The electrically controlled valve comprises a second sealing member, which is arranged between the sealing seat and the housing to seal the sealing seat and the housing.

7. The electrically controlled valve according to claim 6, characterized in that: The sealing seat is at least partially sleeved outside the shell, and the second sealing member is located between the inner circumference of the sealing seat and the outer circumference of the shell; or At least a portion of the end surface of the sealing seat abuts against the housing, and the second sealing member is located between the end surface of the sealing seat and the outer surface of the housing.

8. The electrically controlled valve according to claim 1, characterized in that: The electric control valve also includes a coil and a valve body. The valve body is arranged in the shell. The inner wall of the shell and the outer wall of the valve body are spaced apart from each other to form a receiving cavity. The coil is located in the receiving cavity and is electrically connected to the transmission terminal.

9. The electrically controlled valve according to claim 8, characterized in that: The electrically controlled valve comprises a third sealing member, which surrounds the valve body and is located at an end of the valve body away from the transmission terminal. The third sealing member is used for sealing the valve body and the housing.

10. The electrically controlled valve according to claim 8, characterized in that: The electrically controlled valve comprises a valve core, the valve body comprises a valve cavity for accommodating the valve core, and the coil controls the valve core to slide in the valve cavity by switching on and off electricity to open or close the electrically controlled valve.

11. An air spring, characterized in that: It comprises an airbag and the electrically controlled valve according to any one of claims 1 to 10, wherein the airbag comprises a main air chamber and a secondary air chamber, and the electrically controlled valve is arranged between the main air chamber and the secondary air chamber.

12. An active suspension, characterized in that: It comprises the air spring according to claim 11 or the electrically controlled valve according to any one of claims 1-10.

13. A vehicle, characterized in that: It comprises the active suspension as claimed in claim 12, the air spring as claimed in claim 11, or the electrically controlled valve as claimed in any one of claims 1-10.

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