Coil assembly, solenoid valve, air spring, active suspension, and vehicle

Abstract

A coil assembly, a solenoid valve, an air spring, an active suspension, and a vehicle. The coil assembly is applied to the solenoid valve. The coil assembly comprises a coil member and a terminal; the coil member is provided with a boss; the terminal is arranged at one axial end of the coil member; the terminal is provided with a limiting groove; and the boss is in anti-rotation fit with the limiting groove.

Description

Coil assemblies, solenoid valves, air springs, active suspensions and vehicles

[0001] This disclosure claims priority to the Chinese patent application filed with the China Patent Office on December 27, 2023, with application number 202311836232.6 and application name “Coil assembly, solenoid valve, air spring, active suspension and vehicle”, the entire contents of which are incorporated by reference in this disclosure. Technical Field

[0002] The present disclosure belongs to the technical field of control valves, and in particular relates to a coil assembly, a solenoid valve, an air spring, an active suspension, and a vehicle. Background Art

[0003] A solenoid valve is an industrial device controlled by electromagnetics. It is a basic component for fluid automation and is classified as an actuator, not limited to hydraulics or pneumatics. Solenoid valves can be used in conjunction with different circuits to achieve the desired control, thereby adjusting the direction, flow rate, speed, and other parameters of the medium. Due to the high precision and stability of solenoid valve control, they are widely used in automobile production and modification. However, during the assembly process of the terminals and coils, the assembly consistency of the terminals and coils is poor, that is, the directional consistency of the terminals and coils after assembly is poor. The terminals and coils are prone to relative rotation, resulting in poor stability of the terminals and coils after assembly, making it difficult to achieve subsequent automated assembly. Summary of the Invention

[0004] In response to the shortcomings of the existing technology, the present disclosure provides a coil assembly, solenoid valve, air spring, active suspension and vehicle that can reduce the relative rotation angle between the terminal and the coil to improve the consistency of the terminal and coil assembly, thereby facilitating automated assembly.

[0005] In one aspect, the present disclosure provides a coil assembly for use in a solenoid valve, comprising:

[0006] a coil member, wherein the coil member is provided with a boss;

[0007] The terminal is arranged at one axial end of the coil component, the terminal is provided with a limiting groove, and the boss is engaged with the limiting groove to prevent rotation.

[0008] In a possible embodiment, the coil assembly further includes a magnetic ring, which is arranged between the coil component and the terminal. The magnetic ring is provided with a positioning groove, and the boss passes through the positioning groove and cooperates with the limit groove to prevent rotation.

[0009] In a possible implementation manner, the peripheral side wall of the boss contacts the inner side wall of the positioning groove, and the peripheral side wall of the boss also contacts the inner side wall of the limiting groove.

[0010] In one possible embodiment, the coil component includes a winding post, which includes a first end plate and a column that are fixedly connected, and the column is used to wind the wire group of the coil component; the first end plate is arranged at one end of the column close to the terminal, and a portion of the first end plate protrudes outward radially along the column; a first wire threading groove is provided on the peripheral side wall of the first end plate, and the wire group is passed through the first wire threading groove.

[0011] In a possible implementation manner, the first wire threading groove includes at least one first side surface, and the first side surface is not parallel to the central axis of the winding column.

[0012] In a possible embodiment, the first wire threading groove includes a first side surface and a second side surface that are oppositely arranged, the first side surface is inclined relative to the central axis of the first end plate, the second side surface is inclined relative to the central axis of the first end plate, and the inclination direction of the first side surface is the same as the inclination direction of the second side surface.

[0013] In a possible implementation manner, the boss is provided at an end of the first end plate facing away from the column, the boss is provided with a second wire threading groove, and the wire group passes through the second wire threading groove.

[0014] In a possible embodiment, the boss includes a first part and a second part, the first part is connected to the first end plate; the second part is connected to the first part, and the extension direction of the second part is set at an angle to the extension direction of the first part to form the second wire threading groove.

[0015] In a possible implementation manner, two bosses are provided, and the two bosses are arranged opposite to each other along the diameter direction of the winding rod.

[0016] In a possible implementation manner, the two bosses have different structures.

[0017] On the other hand, the present disclosure also provides a solenoid valve, including a shell, a valve body assembly and the above-mentioned coil assembly, the shell has a receiving cavity, the coil assembly and the valve body assembly are received in the receiving cavity, and the coil assembly is sleeved on the outside of the valve body assembly.

[0018] In one possible embodiment, the valve body assembly includes a valve core, which includes a main body, a buffer portion and a first sealing portion. The buffer portion is arranged at an end of the main body close to the terminal, and the first sealing portion is arranged at an end of the main body away from the terminal.

[0019] In a possible implementation manner, the valve core further includes a connecting portion, which connects the buffer portion and the first sealing portion into one.

[0020] In a possible implementation manner, the valve core further includes a second sealing portion, which is provided on a peripheral side wall of the main body portion, and the connecting portion connects the buffer portion, the first sealing portion, and the second sealing portion into one body.

[0021] In one possible implementation, the valve body assembly includes a valve seat;

[0022] Wherein, one of the valve seat and the coil component is provided with a first connecting groove, and the other is provided with a first limiting column, and the first limiting column is received in the first connecting groove.

[0023] In a possible embodiment, the valve body assembly also includes a base, which is arranged on a side of the valve seat away from the coil component, and one of the valve seat and the base is provided with a second connecting groove, and the other is provided with a second limiting column, and the second limiting column is accommodated in the second connecting groove.

[0024] In a possible embodiment, the valve body assembly includes a valve seat and a movable iron core, the movable iron core is provided with a chamfer at one end close to the valve seat, and the valve seat is provided with a flare at one end close to the movable iron core, and the chamfer cooperates with the flare.

[0025] On the other hand, the present disclosure further provides an air spring, comprising a main air chamber, a secondary air chamber and the above-mentioned solenoid valve, wherein the solenoid valve is used to control the on-off between the main air chamber and the secondary air chamber.

[0026] On the other hand, the present disclosure further provides an active suspension, comprising the above-mentioned air spring or the above-mentioned solenoid valve.

[0027] On the other hand, the present disclosure further provides a vehicle, comprising the above-mentioned active suspension or the above-mentioned air spring or the above-mentioned solenoid valve.

[0028] The coil assembly, solenoid valve, air spring, active suspension and vehicle provided by the present invention are prevented from rotating by the boss of the coil component and the limit groove of the terminal. The limit groove is used to limit the boss, thereby reducing the angle of relative rotation between the coil component and the terminal. This is beneficial to improving the consistency between the coil component and the terminal after assembly, and is beneficial to the automated assembly of the coil assembly, thereby improving the assembly efficiency of the coil assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] To more clearly illustrate the technical solutions of the embodiments of the present disclosure, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some implementation methods provided by the embodiments of the present disclosure. For those of ordinary skill in the art, other drawings can be derived from these drawings without inventive effort.

[0030] FIG1 is a structural diagram of a solenoid valve provided by an embodiment of the present disclosure;

[0031] FIG2 is a cross-sectional view of a solenoid valve provided in one embodiment of the present disclosure;

[0032] FIG3 is an assembly diagram of a coil assembly provided in one embodiment of the present disclosure;

[0033] FIG4 is a cross-sectional view of a coil assembly provided in one embodiment of the present disclosure;

[0034] FIG5 is a structural diagram of a terminal provided by an embodiment of the present disclosure;

[0035] FIG6 is a structural diagram of a magnetic conductive ring provided by an embodiment of the present disclosure;

[0036] FIG7 is a structural diagram of a coil component provided by an embodiment of the present disclosure;

[0037] FIG8 is a front view of a coil component provided in one embodiment of the present disclosure;

[0038] FIG9 is a partial enlarged view of the solenoid valve at position A shown in FIG2 ;

[0039] FIG10 is a cross-sectional view of a valve core provided in accordance with an embodiment of the present disclosure;

[0040] FIG11 is a cross-sectional view of another solenoid valve provided in one embodiment of the present disclosure;

[0041] FIG12 is a partial enlarged view of the solenoid valve at position B shown in FIG2 ;

[0042] FIG13 is a schematic structural diagram of a vehicle provided in accordance with an embodiment of the present disclosure. DETAILED DESCRIPTION

[0043] The following will be combined with the accompanying drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present disclosure.

[0044] The following descriptions of the various embodiments are provided with reference to the accompanying drawings to illustrate specific embodiments in which the present disclosure may be implemented. The directional terms mentioned in the description of the present disclosure, such as "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "top", "side", "bottom", "top wall", "side wall", "bottom wall", "inner side wall", "outer side wall", "length direction", "width direction", "height direction", etc., are only used to refer to the directions in the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the present disclosure, and are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the present disclosure. In the description of the present disclosure, for example, "first", "second", "third", "fourth", etc., are only used to distinguish the objects described and do not have any order or technical meaning. In the description of the present disclosure, the "connection" and "coupling" involved, unless otherwise specified, include direct connection (coupling) and indirect connection (coupling). It should be understood that in the description of the present disclosure, "axial" and "radial" are both relative to the axial direction and radial direction of the solenoid valve in the drawings of the present disclosure.

[0045] The structure of the solenoid valve provided by the present invention is described in detail below with reference to the accompanying drawings:

[0046] Please refer to Figures 1 and 2. Figure 1 is a structural diagram of a solenoid valve provided in one embodiment of the present disclosure, and Figure 2 is a cross-sectional view of a solenoid valve provided in one embodiment of the present disclosure.

[0047] This embodiment provides a solenoid valve 100, which includes a housing 10, a terminal 20, a magnetic ring 30, a coil member 40, a valve body assembly 50, and a seal 60. The coil member 40 includes a boss 41 and a winding post 42, and the valve body assembly 50 includes a valve seat 51, a base 52, a movable iron core 53, a valve core 54, a connecting rod 55, and a magnetic isolation tube 56. The terminal 20, the magnetic ring 30, and the coil member 40 form a coil assembly 234.

[0048] Please refer to Figures 1 to 8, Figure 3 is an assembly diagram of a coil assembly provided by an embodiment of the present disclosure, Figure 4 is a cross-sectional view of a coil assembly provided by an embodiment of the present disclosure, Figure 5 is a structural diagram of a terminal provided by an embodiment of the present disclosure, Figure 6 is a structural diagram of a magnetic ring provided by an embodiment of the present disclosure, Figure 7 is a structural diagram of a coil component provided by an embodiment of the present disclosure, and Figure 8 is a front view of a coil component provided by an embodiment of the present disclosure.

[0049] In a specific embodiment, the housing 10 has a receiving cavity 11 extending axially therethrough. The housing 10 also includes a first end 10a and a second end 10b disposed axially opposite each other, with the receiving cavity 11 extending axially therethrough. The coil assembly 234 and the valve body assembly 50 are disposed within the receiving cavity 11, with the coil assembly 234 being sleeved over the valve body assembly 50. A portion of the terminal 20 is fixed within the receiving cavity 11 and positioned at the first end 10a of the housing 10, while another portion extends from the first end 10a of the housing 10 into the receiving cavity 11. The magnetic ring 30 is disposed within the receiving cavity 11 and is positioned on one side of the portion of the terminal 20 positioned within the receiving cavity 11. The coil member 40 is housed within the receiving cavity 11 and is positioned on the side of the magnetic ring 30 facing away from the terminal 20. The coil member 40 passes through the magnetic ring 30 and is connected to the terminal 20, thereby axially connecting the terminal 20, the magnetic ring 30, and the coil member 40. The magnetic ring 30 concentrates and enhances the magnetic field, making it more concentrated and evenly distributed. It also shields against external magnetic interference, protecting internal components from the effects of the field. A portion of the valve body assembly 50 is movably disposed within the receiving chamber 11, while another portion of the valve body assembly 50 extends from the second end 10b of the housing 10 into the receiving chamber 561. Both the coil member 40 and the magnetic ring 30 are sleeved around the valve body assembly 50 within the receiving chamber 11.

[0050] Among them, the terminal 20 has a limiting groove 21, a boss 41 is provided on the coil component 40, and a positioning groove 31 is provided on the magnetic ring 30. The boss 41 passes through the positioning groove 31 of the magnetic ring 30 and extends from the side of the magnetic ring 30 close to the terminal 20. The boss 41 extending from the positioning groove 31 of the magnetic ring 30 is accommodated in the limiting groove 21. The positioning groove 31 and the limiting groove 21 are both used to limit the boss 41.

[0051] In the solenoid valve 100 provided by the present invention, the coil assembly 234 passes through the positioning groove 31 of the magnetic ring 30 through the boss 41 of the coil component 40, and the boss 41 is also accommodated in the limiting groove 21 of the terminal 20, the boss 41 is engaged with the positioning groove 31 to prevent rotation, and the boss 41 is also engaged with the limiting groove 21 to prevent rotation. The positioning groove 31 and the limiting groove 21 are both used to limit the boss 41, thereby reducing the relative rotation angle between the coil component 40, the magnetic ring 30 and the terminal 20, which is beneficial to improving the assembly consistency between the coil component 40, the magnetic ring 30 and the terminal 20 of the coil assembly 234, that is, the structural stability between the coil component 40, the magnetic ring 30 and the terminal 20 of the coil assembly 234 is better after the assembly is completed, which is beneficial to the automated assembly of the components of the coil assembly 234 and the solenoid valve 100, thereby improving the assembly efficiency of the coil assembly 234 and the solenoid valve 100.

[0052] Furthermore, a portion of the circumferential sidewall of the boss 41 contacts the inner sidewall of the limiting groove 21, and another portion of the circumferential sidewall of the boss 41 contacts the inner sidewall of the positioning groove 31. The circumferential sidewall of the boss 41, the inner sidewall of the limiting groove 21, and the inner sidewall of the positioning groove 31 completely limit the relative rotation angle between the coil member 40, the magnetic ring 30, and the terminal 20 of the coil assembly 234, further improving the assembly consistency among the coil member 40, the magnetic ring 30, and the terminal 20 of the coil assembly 234.

[0053] Exemplarily, the boss 41 has an interference fit with the inner wall of the positioning groove 31 , and the boss 41 also has an interference fit with the inner wall of the limiting groove 21 , so that the coil component 40 , the magnetic ring 30 and the terminal 20 of the coil assembly 234 are firmly connected through the boss 41 .

[0054] It is understandable that in some other embodiments, the magnetic ring 30 can be omitted, the boss 41 is accommodated in the limiting groove 21 and cooperates with the limiting groove 21 to prevent rotation, and the limiting groove 21 is used to limit the boss 41, and the present disclosure does not impose any restrictions on this. By the boss 41 of the coil member 40 and the limiting groove 21 of the terminal 20 to prevent rotation, the limiting groove 21 is used to limit the boss 41, thereby reducing the angle of relative rotation between the coil member 40 and the terminal 20, which is conducive to improving the consistency between the coil member 40 and the terminal 20 after assembly, and is conducive to the automated assembly of such coil assembly 234, thereby improving the assembly efficiency of such coil assembly 234.

[0055] In this embodiment, there are two bosses 41, which are arranged opposite each other in the radial direction of the coil member 40. This corresponds to the fact that there are also two positioning grooves 31 on the magnetic conductive ring 30 and two limiting grooves 21 on the terminal 20. The two bosses 41 penetrate the two positioning grooves 31 and are received in the two limiting grooves 21, respectively, to improve the stability of the connection and limiting between the terminal 20, the magnetic conductive ring 30, and the coil member 40.

[0056] Furthermore, the structures of the two protrusions 41 can be designed to be different, so that the coil assembly 234 has a fool-proof function during assembly, which is beneficial to improving the accuracy of assembly of the coil assembly 234.

[0057] It can be understood that in some other embodiments, the number of bosses 41 can be one, three, four, etc., the number of positioning grooves 31 on the corresponding magnetic ring 30 can also be one, three, four, etc., and the number of limiting grooves 21 on the corresponding terminal 20 can also be one, three, four, etc., as long as the number of bosses 41, positioning grooves 31 and limiting grooves 21 is equal, and each boss 41 can pass through a corresponding positioning groove 31 and be accommodated in a corresponding limiting groove 21. The present disclosure does not impose any restrictions on this.

[0058] Please refer to Figures 1 to 7. In a specific embodiment, the limiting groove 21 is provided on the peripheral side wall of the terminal 20, that is, the opening of the limiting groove 21 is located on the peripheral side wall of the terminal 20, the limiting groove 21 extends along the axial direction of the terminal 20, and the limiting groove 21 passes through the end surface of the terminal 20 close to the end of the magnetic ring 30, so that the boss 41 can be received in the limiting groove 21 after being passed through the positioning groove 31. The positioning groove 31 is provided on the peripheral side wall of the magnetic ring 30, that is, the opening of the positioning groove 31 is located on the peripheral side wall of the magnetic ring 30, and the positioning groove 31 axially passes through the end surfaces of the magnetic ring 30 at opposite ends along the axial direction, so that the boss 41 can pass through the magnetic ring 30 and extend from the magnetic ring 30.

[0059] Referring to Figures 2 to 7, in a specific embodiment, the coil member 40 includes a winding post 42, which is received in the receiving cavity 11. The magnetic ring 30 is disposed between the winding post 42 and the terminal 20. A boss 41 is disposed at one end of the winding post 42 close to the magnetic ring 30. A buckle 411 is disposed on the end of the boss 41 facing away from the winding post 42. The terminal 20 is provided with a slot 22, and the buckle 411 engages with the slot 22. The buckle 411 on the boss 41 engages with the slot 22 of the terminal 20, thereby securing the coil member 40 and the terminal 20. Moreover, due to the engagement of the buckle 411 and the slot 22, the relative axial movement between the coil member 40 of the coil assembly 234 and the terminal 20 is restricted, and the magnetic ring 30 sandwiched between the winding post 42 and the terminal 20 can also be relatively fixed, that is, the axial movement of the magnetic ring 30 relative to the coil member 40 is restricted, and the axial movement of the magnetic ring 30 relative to the terminal 20 is restricted. Thus, by engaging the buckle 411 on the boss 41 with the slot 22 on the terminal 20, the relative axial movement between the coil member 40, the magnetic ring 30, and the terminal 20 of the coil assembly 234 can be restricted, which helps to improve the stability of the axial connection of the coil assembly 234.

[0060] Referring to Figures 2 to 7 , in a specific embodiment, the winding post 42 includes a first end plate 421, a column 422, and a second end plate 423. The first end plate 421 and the second end plate 423 are disposed at opposite ends of the column 422 in the axial direction. The first end plate 421 is disposed at the end of the column 422 closest to the terminal 20. The column 422 is used to wind the wire assembly 43 of the coil member 40. The magnetic ring 30 is disposed between the first end plate 421 and the terminal 20. A portion of the first end plate 421 protrudes radially outward from the column 422. For example, the radial dimension of the first end plate 421 may be larger than the radial dimension of the column 422. The boss 41 is disposed at the end of the first end plate 421 facing away from the column 422. A first wire threading groove 4211 is provided on the peripheral sidewall of the first end plate 421, through which the wire assembly 43 passes. By providing a first threading slot 4211 on the first end plate 421, the wire assembly 43 wound around the column 422 can pass through the first threading slot 4211 and extend into the terminal 20, thereby facilitating connection between the wire assembly 43 and an external power source via the terminal 20, thereby enabling the wire assembly 43 to be energized to form an electromagnetic field. Furthermore, the provision of the first threading slot 4211 prevents the wire assembly 43 from being exposed outside the peripheral sidewall of the first end 10a, thereby reducing damage to the wire assembly 43 caused by friction between the wire assembly 43 and other structures, thereby increasing the service life of the wire assembly 43.

[0061] It is understandable that in some other embodiments, the second end plate 423 of the winding post 42 can be omitted to simplify the structure of the winding post 42 and the coil assembly 234, and the present disclosure does not limit this.

[0062] In this embodiment, the first end plate 421, the column 422, and the second end plate 423 are all annular in shape. The radial dimension of the first end plate 421 is larger than the radial dimension of the column 422, and the radial dimension of the second end plate 423 is larger than the radial dimension of the column 422. By making the radial dimension of the first end plate 421 larger than the radial dimension of the column 422, and the radial dimension of the second end plate 423 larger than the radial dimension of the column 422, the winding stability of the wire assembly 43 of the coil member 40 on the column 422 is improved.

[0063] It is understandable that in some other embodiments, the first end plate 421, the column 422 and the second end plate 423 can be prisms or other shapes, and the size relationship between the first end plate 421, the column 422 and the second end plate 423 can be other relationships, which is not limited in this disclosure.

[0064] Furthermore, the first threading groove 4211 includes a first side surface 4212 and a second side surface 4213 that are arranged opposite to each other. The first side surface 4212 is inclined relative to the central axis of the first end plate 421, and the second side surface 4213 is inclined relative to the central axis of the first end plate 421. The inclination direction of the first side surface 4212 relative to the central axis of the first end plate 421 is the same as the inclination direction of the second side surface 4213 relative to the central axis of the first end plate 421. By tilting the first threading groove 4211 relative to the central axis of the first end plate 421, the wire group 43 can be easily passed through the first threading groove 4211 along the winding direction, and the stress generated between the end of the first threading groove 4211 and the inner wall of the first threading groove 4211 can be reduced, thereby reducing the risk of the wire group 43 breaking when passing through the first threading groove 4211. Specifically, the inclination direction of the first wire threading groove 4211 is close to the winding direction of the wire group 43 on the column 422, so that when the wire group 43 is passing through the first wire threading groove 4211, the inclination angle between the side wall that the wire group 43 first contacts with the first wire threading groove 4211 is an obtuse angle, which can reduce the stress on the wire group 43 when passing through the first wire threading groove 4211.

[0065] It can be understood that in some other embodiments, only the first side surface 4212 of the first wire threading groove 4211 is not parallel to the central axis of the winding post 42, for example, only the first side surface 4212 is inclined relative to the central axis of the first end plate 421 or the winding post 42, and the second side surface 4213 of the first wire threading groove 4211 can be parallel to the central axis of the first end plate 421 or the winding post 42, and the present disclosure does not impose any restrictions on this.

[0066] Referring to Figures 1 to 8, in a specific embodiment, the boss 41 is provided at the end of the first end plate 421 facing away from the column 422. The boss 41 is provided with a second threading groove 412, and the wire group 43 passes through the second threading groove 412. The design of the second threading groove 412 allows the wire group 43, which passes through the first threading groove 4211, to pass through the second threading groove 412 to the side of the edge of the boss 41 facing away from the first end plate 421 and then pass out, thereby reducing the risk of wear between the wire group 43 and other structures outside the coil assembly 234.

[0067] It is understandable that the second threading groove 412 can be a through hole or a slot-shaped hole provided on the edge of the boss 41. It only needs to ensure that the second threading groove 412 radially penetrates the boss 41, and the present disclosure does not impose any restrictions on this.

[0068] Specifically, the boss 41 includes a first portion 413 and a second portion 414. The first portion 413 is connected to the first end plate 421. The second portion 414 is connected to the first portion 413. The second portion 414 extends at an angle to the first portion 413 to form a second threading groove 412. The second portion 414 is configured to prevent the wire assembly 43 from passing through the second threading groove 412 to the edge of the boss 41 facing away from the first end plate 421 from moving toward the edge of the first end plate 421, thereby improving the stability of the wire assembly 43 within the coil assembly 234.

[0069] It is understandable that in some other embodiments, the second threading groove 412 is not limited to being set at the connection between the boss 41 and the first end plate 421. The second threading groove 412 can be set at other positions of the boss 41, and the present disclosure does not limit this.

[0070] It can be understood that in some other embodiments, the first part 413 is not limited to extending in the axial direction, and the second part 414 is not limited to extending in the radial direction. It is only necessary to ensure that the extension direction of the first part 413 and the extension direction of the second part 414 form an angle. At the same time, the angle formed by the first part 413 and the second part 414 forms a second wire threading groove 412, and the present disclosure does not impose any restrictions on this.

[0071] Please refer to Figures 2 and 9. Figure 9 is a partial enlarged view of the solenoid valve shown in Figure 2 at point A. In a specific embodiment, the valve body assembly 50 includes a valve seat 51 and a base 52. The valve seat 51 is axially connected between the second end plate 423 and the base 52. The valve seat 51 is fixed within the receiving cavity 11 of the housing 10. The peripheral sidewall of the valve seat 51 is sealed to the inner sidewall of the housing 10. The base 52 is received in the receiving cavity 11 and is fixedly connected to the housing 10.

[0072] In this embodiment, the valve seat 51 has a first connecting groove 511 and a second connecting groove 512 arranged along the axial direction of the valve seat 51. The second end plate 423 has a first limiting post 4231, which is received in the first connecting groove 511. The base 52 has a second limiting post 521, which is received in the second connecting groove 512. Through the design of the first limiting post 4231, the second limiting post 521, the first connecting groove 511, and the second connecting groove 512, since the first connecting groove 511 is located on the valve seat 51 and the first limiting post 4231 is located on the second end plate 423, after the first limiting post 4231 is received in the first connecting groove 511, relative rotation between the second end plate 423 and the valve seat 51 is limited, which helps to improve the stability of the connection between the coil component 40 and the valve seat 51 and the consistency after assembly. At the same time, since the second connecting groove 512 is located on the valve seat 51 and the second limiting post 521 is located on the base 52, the second limiting post 521 is received in the second connecting groove 512 to limit relative rotation between the base 52 and the valve seat 51, thereby improving the stability of the connection between the base 52 and the valve seat 51 and the consistency of the assembly. Thus, this embodiment limits the relative rotation between the coil member 40, the valve seat 51, and the base 52, which helps ensure the assembly consistency of the coil member 40, the valve seat 51, and the base 52, thereby facilitating the automated assembly of the other components of the solenoid valve 100.

[0073] It can be understood that in some other embodiments, a limiting column can be set on the valve seat 51, and at the same time, a connecting groove can be set at a position corresponding to the second end plate 423, and a connecting groove can be set at a corresponding position on the base 52; or, a connecting groove and a limiting column can be set on the valve seat 51, and at the same time, a connecting groove / limiting column can be set at a position corresponding to the second end plate 423, and a limiting column / connecting groove can be set at a corresponding position on the base 52. The present disclosure does not impose any restrictions on this.

[0074] It can be understood that in some other embodiments, the valve seat 51 is only provided with a first connecting groove 511, which cooperates with the first limiting column 4231 corresponding to the coil component 40, that is, the first limiting column 4231 is accommodated in the first connecting groove 511 to connect the valve seat 51 and the coil component 40; or the valve seat 51 is only provided with a second connecting groove 512, which cooperates with the second limiting column 521 provided on the base 52, that is, the second limiting column 521 is accommodated in the second connecting groove 512 to connect the valve seat 51 and the base 52.

[0075] Referring to Figure 2, in a specific embodiment, the valve body assembly 50 further includes a movable iron core 53, a valve core 54, a connecting rod 55, and a magnetic isolation tube 56. The movable iron core 53 is axially movably disposed within the receiving chamber 11. The movable iron core 53 and the base 52 are disposed on opposite sides of the valve seat 51 along the axial direction. The valve core 54 is axially movably disposed between the valve seat 51 and the base 52, and the valve core 54 is used to seal the base 52. The connecting rod 55 axially movably penetrates the valve seat 51 and is connected between the movable iron core 53 and the valve core 54. The magnetic isolation tube 56 is received within the receiving chamber 11 and has a receiving chamber 561 and an opening connected to the receiving chamber 561. The opening is fixedly mounted on the end of the valve seat 51 facing away from the base 52. The movable iron core 53 is received within the receiving chamber 561 and is axially movable within the receiving chamber 561.

[0076] The movable iron core 53 is a magnetic body, and the coil member 40 provides a magnetic force to the movable iron core 53 when energized, causing the movable iron core 53 to move axially within the accommodating cavity 561. In the solenoid valve 100 provided in this embodiment, the coil member 40 generates an electromagnetic field when energized. Under the influence of the electromagnetic field generated by the coil member 40, the magnetic movable iron core 53 moves from top to bottom along the axial direction of the solenoid valve 100, sealing the valve core 54 with the base 52. The valve core 54 then blocks the fluid passage in the base 52, thereby closing the valve.

[0077] Please refer to Figures 2 and 10. Figure 10 is a cross-sectional view of a valve core provided in an embodiment of the present disclosure. In some embodiments, in order to reduce the impact of the valve core 54 on the base 52, an elastic member 57 is provided between the moving iron core 53 and the valve seat 51, and the elastic clip is elastically compressed between the moving iron core 53 and the valve seat 51. The elastic member 57 is elastically compressed between the moving iron core 53 and the valve seat 51. When the moving iron core 53 drives the valve core 54 to move toward the base 52, the elastic force of the elastic member 57 can buffer the movement speed of the valve core 54 toward the base 52, thereby reducing the impact of the valve core 54 on the base 52, reducing damage to the valve core 54 and the base 52, and helping to improve the service life of the solenoid valve 100.

[0078] Furthermore, the valve core 54 includes a body portion 541, a buffer portion 542, a first sealing portion 544, and a second sealing portion 543. The buffer portion 542 is provided on the end surface of the valve core 54 near one end of the connecting rod 55. The buffer portion 542 is used to contact the valve seat 51 during the axial movement of the valve core 54, thereby reducing the impact speed and impact force between the valve core 54 and the valve seat 51, thereby extending the service life of the valve seat 51 and the valve core 54. The second sealing portion 543 is provided on the circumferential side wall of the valve core 54. The second sealing portion 543 is used to maintain a sealed connection between the circumferential side wall of the valve core 54 and the inner side wall of the valve seat 51, thereby preventing fluid from leaking between the circumferential side wall of the valve core 54 and the inner side wall of the valve seat 51, which is beneficial to ensuring the working performance of the solenoid valve 100. The first sealing portion 544 is disposed on the end surface of the valve core 54 facing away from the connecting rod 55. The first sealing portion 544 is used to block the flow path of the valve seat 51 when the valve core 54 contacts the base 52, thereby achieving the valve closing function of the solenoid valve 100. The buffer portion 542, the second sealing portion 543, and the first sealing portion 544 are integrally structured. That is, the buffer portion 542, the second sealing portion 543, and the first sealing portion 544 are integrally integrated into the body portion 541 of the valve core 54, which helps to reduce the difficulty of manufacturing the valve core 54 and thereby improve the processing efficiency of the valve core 54.

[0079] In this embodiment, the valve core 54 further includes a connecting portion 545 , which connects the buffer portion 542 , the first sealing portion 544 , and the second sealing portion 543 into a whole.

[0080] It can be understood that in some other embodiments, the connecting portion 545 only connects the second sealing portion 543 and the buffer portion 542 into one, and the first sealing portion 544 is provided separately; or, only the first sealing portion 544 and the buffer portion 542 are provided, and the second sealing portion 543 is omitted; or, only the second sealing portion 543 and the buffer portion 542 are provided, and the first sealing portion 544 is omitted. The present disclosure does not impose any restrictions on this.

[0081] Please refer to Figure 11, which is a cross-sectional view of another solenoid valve provided in accordance with an embodiment of the present disclosure. In a specific embodiment, a chamfer 531 is provided at one end of the movable iron core 53 near the connecting rod 55, and a flare 513 is provided at one end of the valve seat 51 near the movable iron core 53. The chamfer 531 of the movable iron core 53 is partially accommodated within the flare 513 of the valve seat 51. The movable iron core 53 can be inserted into the interior of the valve seat 51, thereby increasing the volume of the movable iron core 53 within the magnetic isolation tube 56 and the magnetic field force acting on the movable iron core 53. This helps to improve the sensitivity of the movable iron core 53 in driving the valve core 54 and the connecting rod 55 to move. Furthermore, the movable iron core 53 can be inserted into the interior of the valve seat 51, which helps to reduce the space for the movable iron core 53 to move axially, thereby reducing the axial assembly space of the solenoid valve 100 and facilitating the miniaturization of the solenoid valve 100 as a whole.

[0082] Please refer to Figures 2 and 12. Figure 12 is a partial enlarged view of the solenoid valve shown in Figure 2 at point B. In a specific embodiment, the housing 10 includes a first end 10a and a second end 10b arranged opposite to each other, the terminal 20 extends from the first end 10a, and the valve body assembly 50 extends from the second end 10b. The solenoid valve 100 also includes a seal 60, which is sleeved outside the first end 10a. The seal 60 is sealed to the outer wall of the housing 10 where the terminal 20 extends. The seal 60 is also sealed to the end face of the first end 10a. The seal 60 is also sealed to the peripheral side wall near the first end 10a. By providing the seal 60, the opening of the receiving chamber 11 at the first end 10a is sealed, which can prevent impurities in the environment from entering the receiving chamber 11 through the opening of the receiving chamber 11 at the first end 10a, thereby preventing impurities in the environment from contaminating the components in the receiving chamber 11.

[0083] Furthermore, the seal 60 has a first stepped surface 61, which is sealed to the end surface of the first end 10a via a sealing ring. The housing 10 has a second stepped surface 12, and the seal 60 is sleeved on the end surface of the first end 10a and is sealed to the second stepped surface 12 via a sealing ring. The double sealing of the first end 10a of the housing 10 by the seal 60 further improves the sealing effect of the receiving chamber 11 at the opening of the first end 10a, further preventing impurities in the environment from entering the receiving chamber 11 through the opening of the first end 10a, thereby preventing impurities in the environment from contaminating the components within the receiving chamber 11, and thus improving the service life of the solenoid valve 100.

[0084] Please refer to Figure 13. Some embodiments of the present disclosure provide an air spring 200, which includes a main air chamber 202, an auxiliary air chamber 204 and the above-mentioned solenoid valve 100. The solenoid valve 100 is suitable for being connected between the main air chamber 202 and the auxiliary air chamber 204 to control the on-off between the main air chamber 202 and the auxiliary air chamber 204, thereby realizing the switching of different stiffnesses of the air spring 200.

[0085] Some embodiments of the present disclosure provide an active suspension 300 including the aforementioned air spring 200 or the aforementioned solenoid valve 100 .

[0086] Some embodiments of the present disclosure provide a vehicle 400 including the active suspension 300 or the air spring 200 or the solenoid valve 100 described above.

[0087] It is understandable that in some other embodiments, the vehicle 400 includes the active suspension 300 , the active suspension 300 includes the air spring 200 , or the active suspension 300 includes the solenoid valve 100 , and the present disclosure is not limited thereto.

[0088] It can be understood that in some other embodiments, the vehicle 400 only includes an air spring 200, the air spring 200 includes a main air chamber 202, an auxiliary air chamber 204 and a solenoid valve 100, and the solenoid valve 100 is used to control the on-off between the main air chamber 202 and the auxiliary air chamber 204. The present disclosure does not limit this.

[0089] It is understood that in some other embodiments, the vehicle 400 includes the solenoid valve 100 .

[0090] In addition, the solenoid valve 100 can also be applied to other equipment, such as engineering machinery, etc., and the present disclosure does not limit this.

[0091] The above are some implementation methods of the present disclosure. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present disclosure. These improvements and modifications are also considered to be within the scope of protection of the present disclosure.

Claims

1. A coil assembly (234), applied to a solenoid valve (100), characterized in that, include: A coil component (40), wherein the coil component (40) is provided with a boss (41); A terminal (20), the terminal (20) being arranged at one axial end of the coil component (40), the terminal (20) being provided with a limiting groove (21), the boss (41) being engaged with the limiting groove (21) to prevent rotation.

2. The coil assembly (234) according to claim 1, characterized in that, The coil assembly (234) further comprises a magnetic conductive ring (30), wherein the magnetic conductive ring (30) is arranged between the coil component (40) and the terminal (20), the magnetic conductive ring (30) is provided with a positioning groove (31), the boss (41) passes through the positioning groove (31) and cooperates with the limit groove (21) to prevent rotation.

3. The coil assembly (234) according to claim 2, characterized in that, The peripheral side wall of the boss (41) contacts the inner side wall of the positioning groove (31), and the peripheral side wall of the boss (41) also contacts the inner side wall of the limiting groove (21).

4. The coil assembly (234) according to any one of claims 1 to 3, characterized in that, The coil component (40) includes a winding post (42), and the winding post (42) includes a first end plate (421) and a column (422) that are fixedly connected, and the column (422) is used to wind the wire group (43) of the coil component (40); the first end plate (421) is arranged at one end of the column (422) close to the terminal (20), and a part of the first end plate (421) protrudes outward along the radial direction of the column (422); a first threading groove (4211) is arranged on the peripheral side wall of the first end plate (421), and the wire group (43) is passed through the first threading groove (4211).

5. The coil assembly (234) according to claim 4, wherein, The first wire threading groove (4211) comprises at least one first side surface (4212), and the first side surface (4212) is not parallel to the central axis of the winding pole (42).

6. The coil assembly (234) according to claim 5, wherein, The first wire threading groove (4211) includes a first side surface (4212) and a second side surface (4213) which are arranged opposite to each other, the first side surface (4212) is inclined relative to the central axis of the first end plate (421), the second side surface (4213) is inclined relative to the central axis of the first end plate (421), and the inclination direction of the first side surface (4212) is the same as the inclination direction of the second side surface (4213).

7. The coil assembly (234) according to any one of claims 4 to 6, characterized in that, The boss (41) is arranged at one end of the first end plate (421) away from the column (422), and the boss (41) is provided with a second threading groove (412), and the wire group (43) is passed through the second threading groove (412).

8. The coil assembly (234) according to claim 7, wherein, The boss (41) includes a first part (413) and a second part (414), wherein the first part (413) is connected to the first end plate (421); the second part (414) is connected to the first part (413), and an extension direction of the second part (414) is arranged at an angle to an extension direction of the first part (413) to form the second threading groove (412).

9. The coil assembly (234) according to any one of claims 4 to 8, characterized in that Two bosses (41) are provided, and the two bosses (41) are arranged opposite to each other along the diameter direction of the winding pole (42).

10. The coil assembly (234) according to claim 9, wherein, The two bosses (41) have different structures.

11. A solenoid valve (100), characterized in that, It includes a housing (10), a valve body assembly (50), and a coil assembly (234) as described in any one of claims 1 to 10. The housing (10) has a receiving cavity (11). The coil assembly (234) and the valve body assembly (50) are received in the receiving cavity (11), and the coil assembly (234) is sleeved outside the valve body assembly (50).

12. The solenoid valve (100) according to claim 11, wherein, The valve body assembly (50) includes a valve core (54). The valve core (54) includes a body portion (541), a buffer portion (542), and a first sealing portion (544). The buffer portion (542) is provided at one end of the body portion (541) close to the terminal (20), and the first sealing portion (544) is provided at one end of the body portion (541) facing away from the terminal (20).

13. The solenoid valve (100) according to claim 12, characterized in that, The valve core (54) further includes a connecting portion (545). The connecting portion (545) connects the buffer portion (542) and the first sealing portion (544) into one body.

14. The solenoid valve (100) according to claim 13, characterized in that, The valve core (54) further includes a second sealing portion (543). The second sealing portion (543) is provided on the circumferential side wall of the body portion (541). The connecting portion (545) connects the buffer portion (542), the first sealing portion (544), and the second sealing portion (543) into one body.

15. The solenoid valve (100) according to any one of claims 11 to 14, characterized in that, The valve body assembly (50) includes a valve seat (51). Wherein, one of the valve seat (51) and the coil member (40) is provided with a first connecting groove (511), and the other is provided with a first limiting post (4231). The first limiting post (4231) is received in the first connecting groove (511).

16. The solenoid valve (100) according to claim 15, characterized in that, The valve body assembly (50) further includes a base (52). The base (52) is provided on a side of the valve seat (51) away from the coil member (40). One of the valve seat (51) and the base (52) is provided with a second connecting groove (512), and the other is provided with a second limiting post (521). The second limiting post (521) is received in the second connecting groove (512).

17. The solenoid valve (100) according to any one of claims 11 to 14, characterized in that, The valve body assembly (50) includes a valve seat (51) and a moving iron core (53). A chamfer (531) is provided at one end of the moving iron core (53) close to the valve seat (51), and a flared opening (513) is provided at one end of the valve seat (51) close to the moving iron core (53). The chamfer (531) cooperates with the flared opening (513).

18. An air spring (200), characterized in that, It includes a main air chamber (202), a secondary air chamber (204), and a solenoid valve (100) as described in any one of claims 11 to 17. The solenoid valve (100) is used to control the on-off between the main air chamber (202) and the secondary air chamber (204).

19. An active suspension (300), characterized in that, It includes an air spring (200) as described in claim 18 or a solenoid valve (100) as described in any one of claims 11 to 17.

20. A vehicle (400), characterized in that, It includes an active suspension (300) as described in claim 19, or an air spring (200) as described in claim 18, or a solenoid valve (100) as described in any one of claims 11 to 17.

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