CN220396350U - Guide seat, rigidity conversion valve, air spring, suspension system and vehicle - Google Patents

Abstract

The present disclosure relates to a guide holder, a rigidity conversion valve, an air spring, a suspension system and a vehicle, the guide holder is used for the rigidity conversion valve, the guide holder is used for guiding the movement of a valve core of the rigidity conversion valve, the guide holder is suitable for being arranged in a guide holder accommodating cavity of the rigidity conversion valve, and the guide holder is arranged to be capable of being in interference fit with the guide holder accommodating cavity in the axial direction of the valve core. Therefore, the coaxiality of the valve core and the guide seat can be ensured, the valve core is prevented from being eccentric in the valve opening and closing process, the smoothness and reliability of the valve core for opening or closing the valve opening can be improved, the valve opening can be completely closed, and the internal leakage performance of the rigidity conversion valve can be improved. Moreover, the valve core can be prevented from generating friction with other structures of the rigidity conversion valve due to eccentricity, and the service life of the rigidity conversion valve is prolonged. In addition, the guide seat can be prevented from falling off in the carrying process.

Description

Guide seat, rigidity conversion valve, air spring, suspension system and vehicle

Technical Field

The disclosure relates to the technical field of stiffness conversion valves, in particular to a guide seat, a stiffness conversion valve, an air spring, a suspension system and a vehicle.

Background

In the related art, the stiffness conversion valve comprises a valve core and a valve rod, wherein the valve rod is connected with the valve core, and the valve core can be driven to approach or separate from the valve port through axial movement of the valve rod so as to open or close the valve port. However, during the movement of the spool, the spool may shift, resulting in the axial movement of the spool being affected, thereby affecting the smoothness and reliability of the opening or closing of the valve port by the spool. In addition, the valve core offset and the valve seat generate friction, and the service life of the rigidity conversion valve can be influenced.

Disclosure of Invention

It is an object of the present disclosure to provide a guide holder, a stiffness conversion valve, an air spring, a suspension system, and a vehicle, with which the problems existing in the related art can be at least partially solved.

In order to achieve the above object, the present disclosure provides a guide holder for a stiffness conversion valve, the guide holder is used for guiding movement of a valve core of the stiffness conversion valve, the guide holder is suitable for being arranged in a guide holder accommodating cavity of the stiffness conversion valve, and the guide holder is arranged to be capable of being in interference fit with the guide holder accommodating cavity in an axial direction of the valve core.

Optionally, a connecting portion is disposed on the guide seat, and the connecting portion is configured to be disposed in a groove of the guide seat accommodating cavity, and the connecting portion is configured to be capable of being in interference fit with the groove in an axial direction of the valve element.

Optionally, in the axial direction of the valve core, the interference between the side wall of the connecting part and the side wall of the groove is 0.01-0.1 cm.

Optionally, the connection portion is configured as an annular protrusion and the groove is configured as an annular groove.

Optionally, the guide holder comprises a guide sleeve and a body for supporting the guide sleeve; the body comprises a first part and a second part which are connected, the first part is positioned in the guide sleeve, the second part is provided with a protruding part protruding out of the guide sleeve in the radial direction of the valve core, and the protruding part is configured as the connecting part; the guide sleeve is used for guiding the valve core.

Optionally, the first portion is a first annular structure, the second portion is a second annular structure, and an inner peripheral wall of the second annular structure is connected with an outer peripheral wall of the first annular structure.

Optionally, the guide sleeve comprises two half bodies and a connecting column; the two half bodies are arranged at intervals and oppositely along the axial direction of the valve core, and the two half bodies are connected through the connecting column; the body is clamped between the two half bodies, and a through hole for the connecting column to pass through is formed in the body.

Optionally, each half comprises a first annular portion and a second annular portion connected to the periphery of the first annular portion and directed towards the first annular portion of the other half; the second portion is clamped between the two second annular portions; the two first annular parts are respectively provided with a first hole, the body is provided with a second hole, the second holes and the two first holes jointly define a guide hole, and the guide hole is used for allowing a valve core of the stiffness conversion valve to pass through and guiding movement of the valve core.

Optionally, the first hole coincides with the central axis of the second hole, and the diameter of the first hole is smaller than the diameter of the second hole.

Optionally, the guide sleeve has a first abutment surface and a second abutment surface, and the first abutment surface and the second abutment surface are arranged at intervals along the axial direction of the valve core; the first abutting surface is used for being in sealing contact with a first sealing surface in the guide seat accommodating cavity, and the second abutting surface is used for being in sealing contact with a second sealing surface in the guide seat accommodating cavity.

According to a second aspect of the present disclosure, there is provided a stiffness conversion valve comprising a valve housing, a valve spool, and the guide seat described above;

the guide seat accommodating cavity is formed in the valve shell, and the guide seat is in interference fit with the guide seat accommodating cavity in the axial direction of the valve core;

the valve core is positioned in the valve shell, a valve port is formed on the valve shell, and the valve core is used for being matched with the valve port to close or open the valve port.

Optionally, the valve housing includes a base, and the stiffness conversion valve further includes a valve seat; the valve seat and the base together define the guide seat accommodating cavity.

Optionally, the rigidity conversion valve further comprises a valve rod, core iron, a valve seat and a magnetism isolating pipe; the valve rod penetrates through a through hole in the valve seat, and the valve core is connected with the core iron through the valve rod;

the magnetic isolation tube is sleeved outside the core iron, and one end of the magnetic isolation tube is connected with the valve seat;

the guide seat is provided with a guide hole for the valve core to pass through;

the gap between the outer side wall of the core iron and the inner side wall of the magnetism isolating pipe is a first gap, the gap between the outer side wall of the valve core and the side wall of the guide hole is a second gap, and the gap between the outer side wall of the valve rod and the side wall of the through hole is a third gap;

wherein, in the radial direction of the valve element, the first gap, the second gap, and the third gap satisfy the following relationship:

the width of the second gap < the width of the first gap < the width of the third gap.

According to a third aspect of the present disclosure, there is provided an air spring comprising a housing and the stiffness conversion valve described above, the stiffness conversion valve being disposed within the housing;

the inside of casing is provided with main air chamber and vice air chamber, main air chamber with vice air chamber passes through the gas passage intercommunication, the rigidity change-over valve is used for realizing opening and cuting of gas passage.

According to a fourth aspect of the present disclosure, there is provided a suspension system including the air spring described above.

According to a fifth aspect of the present disclosure, there is provided a vehicle including: the suspension system described above, or,

the air spring; alternatively, the stiffness conversion valve described above.

Because the guide seat is in interference fit with the guide seat accommodating cavity in the axial direction of the valve core, the installation reliability of the guide seat in the guide seat accommodating cavity can be ensured. The guide seat is beneficial to effectively guiding the valve core, ensuring the coaxiality of the valve core and the guide seat, avoiding the eccentric phenomenon of the valve core in the valve opening switching process, ensuring the smooth movement of the valve core in the rigidity conversion valve, improving the smoothness and reliability of opening or closing the valve opening of the valve core, completely closing the valve opening and improving the internal leakage performance of the rigidity conversion valve.

Moreover, as the coaxiality of the valve core and the guide seat can be ensured, the valve core can be prevented from generating friction with other structures of the rigidity conversion valve due to eccentricity, so that the protection effect on the valve core and the valve seat can be achieved, and the service life of the rigidity conversion valve can be prolonged.

In addition, because the guide seat is in interference fit with the guide seat accommodating cavity in the axial direction of the valve core, the assembly process is simplified, and the guide seat can be prevented from falling off in the carrying process. The assembly is formed by interference fit, the risk of loose piece loss in the carrying process is avoided, and automatic production of the rigidity conversion valve can be easily realized.

Additional features and advantages of the present disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings are included to provide a further understanding of the disclosure, and are incorporated in and constitute a part of this specification, illustrate the disclosure and together with the description serve to explain, but do not limit the disclosure. In the drawings:

FIG. 1 is a schematic longitudinal cross-sectional view of a stiffness conversion valve provided by one embodiment of the present disclosure, with a valve spool in a position to close a valve port;

fig. 2 is a schematic perspective view of a guide holder according to an embodiment of the present disclosure;

FIG. 3 is a schematic cross-sectional view of a rod guide provided in one embodiment of the present disclosure;

fig. 4 is a schematic perspective view of a guide sleeve of a guide holder according to an embodiment of the present disclosure;

fig. 5 is a schematic perspective view of a body of a guide holder according to an embodiment of the present disclosure;

FIG. 6 is a schematic front view of a body of a guide shoe provided by one embodiment of the present disclosure;

FIG. 7 is a schematic cross-sectional view of a valve seat and seat provided in accordance with one embodiment of the present disclosure in an assembled state;

FIG. 8 is a schematic cross-sectional view of a valve seat provided by one embodiment of the present disclosure;

fig. 9 is a schematic cross-sectional view of a base provided by an embodiment of the present disclosure.

Description of the reference numerals

A 100-stiffness switching valve; 10-valve core; 20-a guide seat; 21-a connection; 22-a guide sleeve; 221-half; 2211—a first annular portion; 2212—a second annular portion; 222-connecting column; 223-first hole; 23-body; 231-a first part; 232-a second part; 233-vias; 234-a second hole; 24-guiding holes; 201-a first abutment surface; 202-a second abutment surface; 30-a guide seat accommodating cavity; 31-grooves; 32-a first sealing surface; 33-a second sealing surface; 40-valve housing; 41-a base; 411-first opening; 412-a second opening; 413-step surfaces; 42-a housing; 43-sealing seat; a 50-coil assembly; 51-coil; 52-terminal; 53-magnetic ring; 61-valve stem; 62-core iron; 63-valve seat; 631-a through hole; 632-a fixed part; 64-elastic members; 65-magnetism isolating pipe; 71-crash pad; 72-sealing gasket; 80-a spool receiving chamber; 90-valve port.

Detailed Description

Specific embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the disclosure, are not intended to limit the disclosure.

In the description of the present disclosure, it should be understood that the terms "upper," "lower," and the like indicate an orientation or a positional relationship defined based on the drawing direction shown in the drawings, and are merely for convenience of description and simplification of the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, and a specific orientation configuration and operation, and thus should not be construed as limiting the present disclosure, and furthermore, the terms "inner and outer" refer to the inside and outside of the corresponding structural profile. In addition, the terms "first," "second," etc. are merely intended to distinguish one element from another element, and are not sequential or important.

In the description of the present disclosure, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "connected," and "mounted" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through intermediate pieces. The specific meaning of the terms in this disclosure will be understood by those of ordinary skill in the art as the case may be.

As mentioned above, in the related art, since eccentricity may occur during movement of the spool, axial movement of the spool is affected, which affects smoothness and reliability of opening or closing the valve port of the spool, and affects the service life of the stiffness conversion valve. For the rigidity conversion valve, if the axial movement of the valve core is not smooth or the valve port is closed with a problem, the reliability of the rigidity conversion valve is affected, and the failure of the rigidity conversion can be caused, so that the service life of the rigidity conversion valve is affected.

The stiffness conversion valve is a valve for converting the stiffness of an application object (such as a suspension system), and in an air spring of the suspension system of a vehicle, the stiffness conversion valve may be employed to communicate a main air chamber and an auxiliary air chamber of the air spring, or to intercept communication of the main air chamber and the auxiliary air chamber (even if the main air chamber and the auxiliary air chamber of the air spring are not communicated), thereby enabling the suspension system to realize conversion between different stiffnesses.

In view of this, as shown in fig. 1 to 9, the present disclosure provides a guide seat, a stiffness conversion valve including the guide seat, and an air spring including the stiffness conversion valve, where the stiffness conversion valve may be an electric valve, a mechanical valve, a pneumatic valve, and the like, and the present disclosure is not limited thereto.

The air spring can further comprise a shell, the stiffness conversion valve can be arranged in the shell, a main air chamber and an auxiliary air chamber are arranged in the shell, the main air chamber and the auxiliary air chamber are communicated through an air channel, the stiffness conversion valve is used for realizing the opening and the cutting of the air channel, the stiffness of the air spring can be changed by controlling the opening and the cutting of the air channel through the stiffness conversion valve, and therefore the suspension system can realize the stiffness conversion. The construction and operation of air springs are well known to those skilled in the art and will not be described in detail herein.

As shown in fig. 1, the stiffness conversion valve may include a valve housing, the stiffness conversion valve 100 having a spool receiving chamber 80, and the spool 10 may be located in the spool receiving chamber 80, wherein the spool receiving chamber 80 may be defined by a valve seat and a seat of the stiffness conversion valve, the valve housing having a valve port 90 formed thereon, the spool 10 being adapted to cooperate with the valve port 90 to close or open the valve port 90.

As shown in fig. 1 to 9, the guide holder 20 provided in the present disclosure is used for a stiffness conversion valve, the guide holder 20 is adapted to be disposed in a guide holder accommodating cavity 30 of the stiffness conversion valve 100, the guide holder 20 is used for guiding movement of a valve core 10 of the stiffness conversion valve 100, for example, referring to fig. 1 to 3, a guide hole 24 may be provided on the guide holder 20, the guide hole 24 is used for passing through the valve core 10 of the stiffness conversion valve 100 and guiding movement of the valve core 10, and the guide holder 20 is disposed so as to be capable of interference fit with the guide holder accommodating cavity 30 in an axial direction of the valve core 10.

After the assembly is completed, the guide holder 20 is in interference fit with the guide holder accommodating cavity 30 in the axial direction of the valve core 10, for example, referring to fig. 1 to 3, the connecting portion 21 is in interference fit with the groove 31 in the axial direction of the valve core 10, and since the guide holder 20 is in interference fit with the guide holder accommodating cavity 30 in the axial direction of the valve core 10, the reliability of the installation of the guide holder 20 in the guide holder accommodating cavity 30 can be ensured. The guide seat 20 is beneficial to effectively guiding the valve core 10, ensuring the coaxiality of the valve core 10 and the guide seat 20 (such as the guide hole 24), avoiding the eccentric phenomenon of the valve core 10 in the valve opening and closing process, further being beneficial to ensuring the smooth movement of the valve core 10 in the stiffness conversion valve 100, improving the smoothness and reliability of opening or closing the valve opening 90 of the valve core 10, completely closing the valve opening 90 and improving the internal leakage performance of the stiffness conversion valve 100.

Moreover, since the coaxiality of the valve core 10 and the guide seat (such as the guide hole 24) can be ensured, friction between the valve core 10 and other structures (such as the valve seat 63 in fig. 1) of the rigidity conversion valve 100 due to eccentricity can be avoided, so that the protection effect on the valve core 10 and the valve seat 63 can be achieved, and the service life of the rigidity conversion valve 100 can be prolonged. Meanwhile, under the condition of ensuring that the valve core 10 is free from eccentricity, friction between structures (such as the valve rod 61 and the core iron 62 in fig. 1) connected with the valve core 10 and other structures (such as the magnetism isolating pipe 65 in fig. 1) of the rigidity conversion valve 100 is also ensured, and the rigidity conversion valve 100 is further protected.

In addition, because the guide seat 20 and the guide seat accommodating cavity 30 are in interference fit, the assembly process is simplified, the assembly is realized by adopting the interference fit, the risk of loose and piece loss in the carrying process is avoided, the automatic production of the rigidity conversion valve 100 can be easily realized, and the situation that the guide seat 20 falls and is lost or becomes dirty in the carrying process is avoided.

In order to facilitate the above-mentioned interference fit between the rod guide 20 and the rod guide receiving chamber 30, as shown in fig. 1 to 3, in one embodiment of the present disclosure, a groove 31 is formed in the rod guide receiving chamber 30, a connection portion 21 is provided on the rod guide 20, the connection portion 21 is configured to be disposed in the groove 31 of the rod guide receiving chamber 30, and the connection portion 21 is configured to be capable of interference fit with the groove 31 in the axial direction of the valve core 10. In this way, the guide seat 20 and the guide seat accommodating cavity 30 form interference fit in the axial direction of the valve core 10, so that the coaxiality of the valve core 10 and the guide hole 24 can be ensured, and the valve core 10 can be effectively prevented from generating eccentricity.

It will be appreciated that in order to ensure that the spool 10 can move while also ensuring coaxiality of the spool 10, the side walls of the pilot hole 24 and the outer side walls of the spool 10 can have smaller sized gaps.

It will be appreciated that in other embodiments of the present disclosure, guide grooves may be provided on the guide holder 20 instead of the guide holes 24 to guide the valve cartridge 10. The guide holder 20 may not be provided with the above-described connecting portion 21 alone, and the guide bush 22 shown in fig. 3, for example, may be interference-fitted with the guide holder accommodating chamber 30 in the axial direction of the valve element 10.

The present disclosure does not limit the interference between the connecting portion 21 and the groove 31 in the axial direction of the valve element 10, as long as the reliability of the connection between the two can be ensured. In one embodiment of the present disclosure, in the axial direction of the valve core 10, the interference between the side wall of the connecting portion 21 and the side wall of the groove 31 is 0.01-0.1 cm, that is, in the axial direction of the valve core 10, the single-side interference between the side wall of the connecting portion 21 and the side wall of the groove 31 matched with the same is 0.01-0.1 cm, that is, the installation of the connecting portion 21 and the groove 31 is convenient, and the connection reliability of the two can be ensured.

Optionally, the connection portion 21 is configured as an annular protrusion, the groove 31 is configured as an annular groove, and the connection portion 21 and the groove 31 are designed as an adaptive annular structure, so that the contact area between the connection portion 21 and the groove 31 can be increased while the processing is facilitated, and the connection reliability of the connection portion 21 and the groove 31 is improved.

The present disclosure is not limited to the specific structure of the guide holder 20, and alternatively, as shown in fig. 1 to 4, the guide holder 20 includes a guide sleeve 22 and a body 23 for supporting the guide sleeve 22, the body 23 includes a first portion 231 and a second portion 232 connected to each other, the first portion 231 is located inside the guide sleeve 22, the second portion 232 has a protrusion protruding from the guide sleeve 22 in the radial direction of the valve core 10, the protrusion is configured as a connection portion 21, and the guide sleeve 22 is used for guiding the valve core 10.

Here, the body 23 corresponds to a skeleton of the guide holder 20, and the first portion 231 provided in the guide sleeve 22 may support the guide sleeve 22, and the guide sleeve 22 is used for guiding the valve core 10. Thus, the hardness and strength of the material of the body 23 may be greater than those of the guide sleeve 22 when the material is selected. For example, the body material 23 may be a metal or plastic member, and the material of the guide sleeve 22 may be rubber, silicone, or the like.

Alternatively, as shown in fig. 2, 5 and 6, in one embodiment of the present disclosure, the first portion 231 is a first annular ring structure, the second portion 232 is a second annular ring structure, and an inner peripheral wall of the second annular ring structure is connected to an outer peripheral wall of the first annular ring structure, that is, the body 23 of the guide holder 20 is configured as an annular ring structure formed by connecting two sleeves. So designed, when the assembly of the body 23 and the guide sleeve 22 is completed, the portion of the second portion 232 protruding from the outer side wall of the guide sleeve 22 may be configured as an annular connecting portion 21, so as to improve the reliability of the connection between the guide seat 20 and the groove 31.

Alternatively, as shown in fig. 2 to 6, in one embodiment of the present disclosure, the guide sleeve 22 includes two half bodies 221 and a connection post 222, the two half bodies 221 are spaced apart and oppositely arranged along the axial direction of the valve core 10, the two half bodies 221 are connected by the connection post 222, the body 23 is clamped between the two half bodies 221, and a through hole 233 through which the connection post 222 passes is provided on the body 23. Referring to fig. 1, 3 and 4, the guide sleeve 22 is formed in a plane symmetrical structure, the plane being perpendicular to the axial direction of the valve cartridge 10, and the structure is simple.

Alternatively, as shown in fig. 4 to 6, the second portion 231 of the body 23 is clamped between the two halves 221, and the via 233 is provided on the second portion 231.

It will be appreciated that in other embodiments of the present disclosure, the via 233 may be disposed on the second portion 231 of the body 23.

Alternatively, as shown in fig. 4, the number of the connection posts 222 may be plural, and the plurality of connection posts 222 may be circumferentially equally spaced around the central axis of the half body 221 in a ring-shaped structure. The number of the through holes 233 may be plural and corresponds to the connection pillars 222 one by one.

Alternatively, as shown in fig. 3 and 4, each half body 221 includes a first annular portion 2211 and a second annular portion 2212, the second annular portion 2212 is connected to the periphery of the first annular portion 2211 and directed to the first annular portion 2211 of the other half body 221, the second portion 232 of the body 23 is clamped between the two second annular portions 2212, the first portion 231 of the body may be located between the two first annular portions 2211 in the axial direction of the valve core 10, the two first annular portions 2211 are respectively provided with a first hole 223, the body 23 is provided with a second hole 234, and the second hole 234 and the two first holes 223 together define the above-mentioned guide hole 24. By designing the half body 221 to include the first annular portion 2211 and the second annular portion 2212, the guide hole 24 may be defined by the first annular portion 2211, or the body 23 may be clamped by the second annular portion 2212, so that the reliability of the installation of the body 23 and the guide bush 22 is ensured.

As mentioned above, the hardness of the guide bush 22 is small relative to the body 23, and damage to the valve element 10 is not easily caused when the guide bush contacts the valve element 10. In order to allow the valve cartridge 10 to axially move in the guide hole 24, the outer side wall of the valve cartridge 10 is in contact with the inner wall of the hole on the guide sleeve 22, but not in contact with the inner wall of the body 23 as much as possible, as shown in fig. 3, in one embodiment of the present disclosure, the first hole 223 coincides with the central axis of the second hole 234, and the diameter of the first hole 223 is smaller than the diameter of the second hole 234. In this way, when the valve element 10 moves axially in the guide hole 24, even if the valve element 10 contacts the inner wall of the guide hole 24, it contacts the two first holes 223, but does not contact the second holes 234, and thus, the protection function of the valve element 10 can be played.

It is understood that in embodiments of the present disclosure in which the first aperture 223 coincides with the central axis of the second aperture 234, the diameter of the first aperture 223 may also be not less than the diameter of the second aperture 234, which is not limited by the present disclosure.

In the present disclosure, in order to facilitate processing of the guide holder 20, processing costs are reduced. As an alternative embodiment, the guide sleeve 22 and the body 23 may be integrally formed (e.g., injection molded).

In order to avoid air leakage, referring to fig. 1, 3, 4, and 7 to 9, the guide sleeve 22 has a first abutment surface 201 and a second abutment surface 202, the first abutment surface 201 and the second abutment surface 202 being arranged at intervals in the axial direction of the valve element 10, the first abutment surface 201 being for sealing contact with the first sealing surface 32 in the accommodation chamber of the guide holder 20, and the second abutment surface 202 being for sealing contact with the second sealing surface 33 in the accommodation chamber of the guide holder 20.

As shown in fig. 1 and 7 to 9, the valve housing 40 includes a base 41, and the stiffness conversion valve 100 further includes a valve seat 63, and the valve seat 63 and the base 41 define a guide seat accommodating chamber 30 and a groove 31 therebetween. Optionally, the base 41 is provided with an annular step surface 413, and the valve seat 63 has an annular fixing portion 632 sealingly connected to the step surface 413. The step surface 413 is designed to support and limit the fixing portion 632, so that the valve seat 63 and the base 41 can be conveniently and rapidly assembled.

In the present disclosure, as shown in fig. 1, 4 to 9, a mounting hole is formed in the valve body 10 for coupling with the valve stem 61 of the stiffness conversion valve 100, such as welding or interference fit.

As shown in fig. 1, the stiffness conversion 100 may further include a crash pad 71 (also referred to as a cushion pad), and the crash pad 71 may be disposed at a first axial end of the spool 10 for contact with an inner wall of the spool receiving chamber 80. By providing the crash pad 71, the noise of the collision of the spool 10 with the inner wall of the spool accommodating chamber 80 (e.g., the upper inner wall in the drawing direction of fig. 1) can be reduced, and the spool 10 and the structure (e.g., the valve seat 63) in which the spool accommodating chamber 80 is constructed can be protected.

The crash pad 71 may be secured to the valve core 10 in any suitable manner, as the disclosure is not limited in this regard. Optionally, the valve core 10 is provided with a mounting groove, and the connection portion (e.g., the protrusion) on the crash pad 71 may be adhered or integrally formed (e.g., injection molded) in the mounting groove.

As shown in fig. 1, the stiffness conversion valve 100 may further include a gasket 72, where the gasket 72 is disposed at a second end of the valve core 10 axially opposite to the first end, and the gasket 72 is configured to seal the valve port 90 of the stiffness conversion valve 100 to ensure reliability of closing the valve port 90.

The gasket 72 may be secured to the valve core 10 in any suitable manner. Alternatively, in one embodiment of the present disclosure, a recess is provided on the second end surface of the valve element 10, and the recess may be in plug-fit with a protrusion on the gasket 72 to improve the reliability of the connection of the gasket 72 with the valve element 10. Alternatively, the male portion may be adhered or integrally formed (e.g., injection molded) within the female portion.

The present disclosure does not limit the specific structure of the stiffness conversion valve 100, alternatively, as shown in fig. 1, the valve housing 40 of the stiffness conversion valve 100 includes the base 41 and the housing 42, the stiffness conversion valve 100 further includes the coil assembly 50 and the valve body assembly including the valve stem 61 described above, the valve seat 63, and the spool 62 and the elastic member 64, the spool 62 is movably disposed inside the housing 42, the valve seat 63 and the base 41 are formed with the spool accommodating chamber 80 described above, the spool 10 is accommodated in the spool accommodating chamber 80, the valve stem 61 is inserted through the through hole 631 in the valve seat 63, the spool 10 is connected with the spool 62 through the valve stem 61, the coil assembly 50 is disposed outside the spool 62 for providing a magnetic force for moving the spool 62 toward the port, the elastic member 64 is connected between the spool 62 and the valve seat 63 for providing a restoring force to the spool 62, the base 41 is provided with the first opening 411 and the second opening 412, and the first opening 411 and the second opening 412 are communicated through the valve port 90.

When the coil assembly 50 is in the de-energized state, the valve spool 10 may remain in a position to open the valve port 90 under the influence of the spring 64. When the valve port 90 needs to be closed, the coil assembly 50 can be electrified to generate a magnetic field, the elastic force of the elastic member 64 is overcome, the core iron 62 is driven to move towards the base 41 side, and the valve core 10 and the base 41 are sealed, so that the valve port 90 can be closed, and the first opening 411 and the second opening 412 are cut off. When the power to the coil assembly 50 is turned off, the core 62 can move in a direction away from the valve port 90 by the elastic member 64, and the valve port 90 is re-opened, so that the first opening 411 and the second opening 412 are communicated.

The elastic member 64 may be a spring, a spring plate, an elastic block, etc., which is not limited in this disclosure.

As shown in fig. 1, the coil assembly 50 may include a coil 51, a terminal 52, and a magnetically permeable ring 53, the valve housing 40 may further include a seal seat 43, and the valve core assembly may further include a magnetically isolated tube 65. The magnetism insulator 65 is sleeved outside the core iron 62, and the lower end of the magnetism insulator 65 is connected with the valve seat 63. The magnetic ring 53 is disposed between the terminal 52 and the coil 51, the coil 51 is electrically connected with the terminal 52, and is sleeved on the magnetism isolating tube 65, the sealing seat 43 is connected to the upper end of the casing 42, and the terminal 52 is disposed through the sealing seat 43 for being electrically connected with the power supply structure. In this manner, the base 41, the spool assembly and the coil assembly 50 may be combined together by the housing 42 while the seal seat 43 is fixed to the outer periphery of the housing 42 and the coil assembly 50. By providing the magnetism isolating pipe 65, the magnetic flux leakage of the iron core can be effectively reduced, and the efficiency and the sensitivity of the valve can be improved.

Referring to fig. 1, the gap between the outer sidewall of the core iron 62 and the inner sidewall of the magnetism insulator 65 of the stiffness conversion valve 100 is a first gap, the gap between the outer sidewall of the valve core 10 and the sidewall of the guide hole 24 is a second gap, and the gap between the outer sidewall of the valve rod 61 and the sidewall of the through hole 631 on the valve seat 63 is a third gap, wherein in the radial direction of the valve core 10, the first gap, the second gap and the third gap satisfy the following relationship, the width of the second gap < the width of the first gap < the width of the third gap, and the design is such that the collision problem of the core iron 62 and the magnetism insulator 65 during the movement process can be effectively avoided, and the width directions of the first gap, the second gap and the third gap are the same as the radial direction of the valve core 10.

In the present disclosure, the use scenario of the stiffness conversion valve 100 is not limited, and it may be applied to any suitable object, for example, the stiffness conversion valve 100 may be applied to an air spring, such that the main air chamber and the auxiliary air chamber of the air spring are connected and disconnected, or the stiffness conversion valve 100 may be applied to other structures on a vehicle adapted to convert stiffness using the stiffness conversion valve.

In an embodiment in which the stiffness conversion valve 100 is applied to an air spring, the first opening 411 may communicate with one of the main air chamber and the sub air chamber of the air spring, and the second opening 412 may communicate with the other of the main air chamber and the sub air chamber of the air spring. For example, the first opening 411 communicates with the sub air chamber, and the second opening 412 communicates with the main air chamber of the air spring, so that the communication or interception of the main air chamber and the sub air chamber can be achieved by driving the movement of the valve body 10.

It will be appreciated that the air spring of the present disclosure may be applied to an object, such as a strut of a vehicle door, in addition to being incorporated into a suspension system.

According to yet another aspect of the present disclosure, there is provided a suspension system including the air spring described above for placement between a body of a vehicle and an axle.

According to still another aspect of the present disclosure, there is provided a vehicle including any one of the stiffness conversion valve, the air spring, and the suspension system described above.

The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings, but the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solutions of the present disclosure within the scope of the technical concept of the present disclosure, and all the simple modifications belong to the protection scope of the present disclosure.

In addition, the specific features described in the foregoing embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, the present disclosure does not further describe various possible combinations.

Moreover, any combination between the various embodiments of the present disclosure is possible as long as it does not depart from the spirit of the present disclosure, which should also be construed as the disclosure of the present disclosure.

Claims (16)

1. The guide seat is used for guiding movement of a valve core of the stiffness conversion valve, and is suitable for being arranged in a guide seat accommodating cavity of the stiffness conversion valve, and the guide seat is arranged to be in interference fit with the guide seat accommodating cavity in the axial direction of the valve core.

2. The guide holder according to claim 1, wherein a connecting portion is provided on the guide holder, the connecting portion is configured to be disposed in a groove of the guide holder accommodating chamber, and the connecting portion is configured to be capable of interference fit with the groove in an axial direction of the valve element.

3. The guide holder according to claim 2, wherein an interference between a side wall of the connecting portion and a side wall of the groove in an axial direction of the spool is 0.01 to 0.1cm.

4. The guide shoe of claim 2, wherein the connection is configured as an annular protrusion and the recess is configured as an annular groove.

5. The guide shoe of any one of claims 2-4, wherein the guide shoe comprises a guide sleeve and a body for supporting the guide sleeve;

the body comprises a first part and a second part which are connected, the first part is positioned in the guide sleeve, the second part is provided with a protruding part protruding out of the guide sleeve in the radial direction of the valve core, and the protruding part is configured as the connecting part;

the guide sleeve is used for guiding the valve core.

6. The guide shoe of claim 5, wherein the first portion is a first annular structure and the second portion is a second annular structure, an inner peripheral wall of the second annular structure being connected to an outer peripheral wall of the first annular structure.

7. The guide shoe of claim 5, wherein the guide sleeve comprises two halves and a connecting post;

the two half bodies are arranged at intervals and oppositely along the axial direction of the valve core, and the two half bodies are connected through the connecting column;

the body is clamped between the two half bodies, and a through hole for the connecting column to pass through is formed in the body.

8. The guide shoe of claim 7, wherein each half comprises a first annular portion and a second annular portion, the second annular portion being connected to a periphery of the first annular portion and directed toward a first annular portion of the other half;

the second portion is clamped between the two second annular portions;

the two first annular parts are respectively provided with a first hole, the body is provided with a second hole, the second holes and the two first holes jointly define a guide hole, and the guide hole is used for allowing a valve core of the stiffness conversion valve to pass through and guiding movement of the valve core.

9. The guide shoe of claim 8, wherein the first bore coincides with a central axis of the second bore and the diameter of the first bore is smaller than the diameter of the second bore.

10. The guide shoe of claim 5, wherein the guide sleeve has a first abutment surface and a second abutment surface, the first abutment surface and the second abutment surface being spaced apart along an axial direction of the spool;

the first abutting surface is used for being in sealing contact with a first sealing surface in the guide seat accommodating cavity, and the second abutting surface is used for being in sealing contact with a second sealing surface in the guide seat accommodating cavity.

11. A stiffness conversion valve characterized by comprising a valve housing, a valve spool and a guide seat according to any one of claims 1-10;

the guide seat accommodating cavity is formed in the valve shell, and the guide seat is in interference fit with the guide seat accommodating cavity in the axial direction of the valve core;

the valve core is positioned in the valve shell, a valve port is formed on the valve shell, and the valve core is used for being matched with the valve port to close or open the valve port.

12. The stiffness conversion valve according to claim 11 wherein the valve housing includes a base, the stiffness conversion valve further including a valve seat;

the valve seat and the base together define the guide seat accommodating cavity.

13. The stiffness conversion valve according to claim 11 further comprising a valve stem, a core iron, a valve seat, and a magnetic separator;

the valve rod penetrates through a through hole in the valve seat, and the valve core is connected with the core iron through the valve rod;

the magnetic isolation tube is sleeved outside the core iron, and one end of the magnetic isolation tube is connected with the valve seat;

the guide seat is provided with a guide hole for the valve core to pass through;

the gap between the outer side wall of the core iron and the inner side wall of the magnetism isolating pipe is a first gap, the gap between the outer side wall of the valve core and the side wall of the guide hole is a second gap, and the gap between the outer side wall of the valve rod and the side wall of the through hole is a third gap;

wherein, in the radial direction of the valve element, the first gap, the second gap, and the third gap satisfy the following relationship:

the width of the second gap < the width of the first gap < the width of the third gap.

14. An air spring comprising a housing and the stiffness conversion valve according to claim 12 or 13, the stiffness conversion valve being provided in the housing;

the inside of casing is provided with main air chamber and vice air chamber, main air chamber with vice air chamber passes through the gas passage intercommunication, the rigidity change-over valve is used for realizing opening and cuting of gas passage.

15. A suspension system comprising an air spring according to claim 14.

16. A vehicle, characterized by comprising:

the suspension system of claim 15, or,

the air spring of claim 14; or,

a stiffness conversion valve according to claim 12 or 13.