CN223331167U - Solenoid valve and pneumatic comfort system - Google Patents

Abstract

The utility model relates to an electromagnetic valve and a pneumatic comfort system, wherein the electromagnetic valve comprises a valve body, a coil, a first valve core and a second valve core, the valve body is provided with a conduction chamber, a first medium opening, a second medium opening and a third medium opening, the first medium opening, the second medium opening and the third medium opening are communicated with the conduction chamber, the coil is wound on the valve body, the first valve core comprises a first permanent magnet, the first valve core can be used for closing or opening the first medium opening in a displacement mode under the excitation action of the coil, the second valve core comprises a second permanent magnet which is homopolar and opposite to the first permanent magnet, and the second valve core can be used for closing or opening the second medium opening in a displacement mode under the excitation action of the coil. The electromagnetic valve provided by the utility model is provided with the single coil, the first valve core is controlled to be displaced to open or close the first medium opening according to the electrified state of the coil, the second valve core is controlled to be displaced to open or close the second medium opening, the conduction relation among the first medium opening, the second medium opening and the third medium opening is controlled, and the functions of inflation, deflation and pressure maintaining can be realized.

Description

Solenoid valve and pneumatic comfort system

Technical Field

The utility model relates to the technical field of electromagnetic valves, in particular to an electromagnetic valve and a pneumatic comfort system.

Background

The existing two-position three-way electromagnetic valve only has the functions of inflation and deflation, but can not realize pressure maintaining, is suitable for a pneumatic massage system only needing the functions of inflation and deflation, and has great application limitation in a pneumatic comfort system comprising a pneumatic waist support system and the like which need the pressure maintaining function. The pneumatic waist support system mainly relies on three-position three-way electromagnetic valves to perform inflation, deflation and pressure maintaining operations on the waist support air bag, so that the waist support function is adjusted, and comfort experience of waist support is provided for a user.

The three-position three-way electromagnetic valve is provided with two sections of valve bodies, wherein each section of valve body is internally provided with a valve core, and each section of valve body is respectively wound with a coil. The two sections of valve bodies are communicated with each other to form a complete gas control channel system.

The three-position three-way electromagnetic valve has the inflating process that an air inlet and an inflating port are arranged on one section of valve body, when the valve core in the section of valve body displaces and opens the air inlet, the valve core of the other section of valve body is controlled to close the air leakage port, so that air can flow into the inflating port through the air inlet and then be conveyed to an air utilization unit (such as a waist support air bag), and the inflating function is realized.

The pressure maintaining process of the three-position three-way electromagnetic valve is that when the valve core of one section of valve body closes the air inlet and the valve core of the other section of valve body also closes the air outlet, the gas in the gas utilization unit cannot flow out, so that the gas in the waist support gas bag is kept stable, and the pressure maintaining function is realized.

When the valve core of one section of valve body closes the air inlet, the valve core of the other section of valve body is controlled to open the air leakage port, and at the moment, the gas in the gas utilization unit (such as a waist support air bag) can flow out to the atmosphere through the gas charging port and the air leakage port in sequence, so that the air leakage operation is completed.

Therefore, in order to realize the three functions of inflating, deflating and pressure maintaining of the waist support air bag, two groups of coils are required to be respectively subjected to excitation control, and the two valve cores are driven to perform corresponding actions. In terms of control program, the parameters such as excitation time and intensity of the two groups of coils are precisely coordinated so as to ensure that the two valve cores can accurately act according to different requirements of inflation, deflation and pressure maintaining. For example, when the valve is inflated, the valve core of one section of valve body is ensured to accurately open the air inlet, and the valve core of the other section of valve body is simultaneously used for accurately closing the air outlet, so that the control procedure is extremely complicated due to the fact that the multiple components cooperate and precise control is required.

In addition, due to the structural design of two groups of coils and two valve bodies, the hardware cost is correspondingly increased. On one hand, the purchase cost, the manufacturing process cost and the like of the coils are accumulated, the energy consumption of the two groups of coils is higher during working, on the other hand, in order to ensure that the two valve cores can accurately act, a more precise processing process and a higher-quality material are possibly needed, the manufacturing cost of the valve body and the whole electromagnetic valve is further improved, and on the other hand, the structural design of the two groups of coils and the two valve bodies makes the structural volume of the whole three-position three-way electromagnetic valve large. In addition, the complex control program consumes more manpower and material resources in the development and debugging process, thereby indirectly increasing the cost.

Disclosure of utility model

The utility model provides an electromagnetic valve and a pneumatic comfort system for overcoming the problems that in the prior art, the application of a two-position three-way electromagnetic valve in the pneumatic comfort system comprising a pneumatic waist support system is limited, and the three-position three-way electromagnetic valve has a complex structure, a complex working control program, high cost and the like.

In order to solve the technical problems, the technical scheme of the utility model is as follows:

According to an object of the present utility model, there is provided a solenoid valve comprising:

The valve body is provided with a conduction chamber, a first medium opening, a second medium opening and a third medium opening which are communicated with the conduction chamber;

a coil wound around the valve body;

The first valve core is arranged in the conduction chamber and comprises a first permanent magnet, the first valve core can be used for closing or opening the first medium opening in a displacement mode under the excitation action of the coil, and

The second valve core is arranged in the conduction chamber, comprises a second permanent magnet, and is homopolar opposite to the first permanent magnet, and can be used for closing or opening the second medium opening in a displacement mode under the excitation action of the coil;

The solenoid valve has a first conductive state in which the coil is in a first conductive state to cause the first spool to displace to open the first medium opening and the second spool to displace to close the second medium opening so that the first medium opening is conductive to the third medium opening, a second conductive state in which the coil is in a second conductive state to cause the first spool to displace to close the first medium opening and the second spool to displace to open the second medium opening so that the second medium opening is conductive to the third medium opening, and a third conductive state in which the coil is in a third conductive state to cause the first spool to displace to close the first medium opening and the second spool to displace to close the second medium opening so that the first medium opening, the second medium opening and the third medium opening are conductive to each other.

In some optional implementations, the valve further comprises a first reset element, wherein the first reset element is arranged in the conducting chamber and elastically drives the first valve core to close or open the first medium opening.

In some optional implementations, the valve further comprises a second reset element, wherein the second reset element is arranged in the conducting chamber and elastically drives the second valve core to close or open the second medium opening.

In some alternative implementations, the device further comprises a first reset element, a second reset element and a support, wherein the support is arranged in the conducting chamber and is positioned between the first valve core and the second valve core, a first end of the first reset element is in operative connection with the support, a second end of the first reset element is in operative connection with the first valve core, the first reset element elastically drives the first valve core to seal the first medium opening, a second end of the second reset element is in operative connection with the support, a first end of the second reset element is in operative connection with the second valve core, and the second reset element elastically drives the second valve core to seal the second medium opening.

In some optional implementations, a first positioning groove corresponding to the first end of the first reset element is provided on the bracket, and the first end of the first reset element is positioned in the first positioning groove.

In some alternative implementations, a second positioning groove corresponding to the second end of the second reset element is provided on the bracket, and the second end of the second reset element is positioned in the second positioning groove.

In some optional implementations, the bracket is movably disposed in the conducting chamber, and the first reset element and the second reset element have the same elastic coefficient.

In some optional implementations, the bracket is disposed in the conducting chamber in a limiting manner, and the elastic coefficient of the first reset element is greater than the elastic coefficient of the second reset element.

In some alternative implementations, the device further comprises a reset element, wherein the reset element is arranged in the conducting chamber, and the reset element elastically drives the first valve core to close the first medium opening and elastically drives the second valve core to close the second medium opening.

According to another object of the present utility model, there is provided a pneumatic comfort system comprising:

a plurality of air bags;

an air supply unit;

And a solenoid valve according to any one of the above, the air supply unit being connected to the air bag through the solenoid valve;

Wherein the air supply unit is in fluid communication with the first or second media opening of the valve body and the air bag is in fluid communication with the third media opening of the valve body.

Compared with the prior art, the technical scheme of the utility model has the beneficial effects that:

The electromagnetic valve provided by the utility model is provided with a single coil, and the first valve core and the second valve core which are controlled by coil excitation. According to the electrified state of the coil, exciting controls the first valve core to displace to open the first medium opening, and simultaneously enables the second valve core to displace to close the second medium opening so as to enable the first medium opening to be communicated with the third medium opening, or exciting controls the second valve core to displace to open the second medium opening, and simultaneously enables the first valve core to displace to close the first medium opening so as to enable the second medium opening to be communicated with the third medium opening, or exciting controls the first valve core to displace to close the first medium opening and enables the second valve core to displace to close the second medium opening so as to enable the first medium opening, the second medium opening and the third medium opening to be closed and communicated. Realize the on-off relation between accurate control first medium opening, second medium opening and the third medium opening, compare traditional two tee bend solenoid valve, can realize aerifing, air leakage and pressurize function, and compare traditional three tee bend solenoid valve, when can realize stable regulation and control to aerify, air leakage, pressurize, reduce the setting of coil and valve body, the cost is reduced and the space occupancy who reduces whole valve structure, and application scope is wider.

The pneumatic comfort system provided by the utility model adopts the electromagnetic valve to communicate the air supply unit and the air bag so as to control the inflation, deflation or pressure maintaining of the air bag, and can realize accurate control on the air flow based on the electromagnetic valve, thereby realizing stable pressure regulation on the air bag and ensuring that the pneumatic comfort system has better function regulation effect.

The foregoing description is only an overview of the present utility model, and is intended to be implemented in accordance with the teachings of the present utility model, as it is to be understood that the following detailed description of the utility model is intended to provide a better understanding of the present utility model, as it is presented herein, along with the foregoing and other objects, features and advantages of the utility model.

Drawings

The drawings are only for purposes of illustrating embodiments and are not to be construed as limiting the utility model. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:

fig. 1 is a schematic perspective view of a solenoid valve according to an embodiment of the present utility model along a first view angle;

fig. 2 is a schematic perspective view of a solenoid valve according to a second view angle according to an embodiment of the present utility model;

FIG. 3 is a top view of a solenoid valve according to an embodiment of the present utility model;

FIG. 4 is a cross-sectional view taken along the A-A plane of FIG. 3;

FIG. 5 is a schematic diagram of a pneumatic comfort system provided by an embodiment of the present utility model;

Wherein, the

10. A valve body;

101. A conduction chamber; 102, a first medium opening, 103, a second medium opening, 104, a third medium opening, 105, and a clamping groove;

110. Pins;

20. A coil;

30. 301, a first sealing element;

40. 401, a second sealing element;

50. A first reset element;

60. a second reset element;

70. A bracket;

80. 801, air inlet channel;

810. A third seal;

90. 901, inflating channel;

100. an air bag;

200. and an air supply unit.

The drawings are for illustrative purposes only and should not be construed as limiting the present patent, and certain components of the drawings may be omitted, enlarged or reduced in order to better illustrate the present embodiment, and do not represent the actual product size, and it may be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted, that the same or similar reference numerals correspond to the same or similar components, and that the terms describing the positional relationship in the drawings are for illustrative purposes only and should not be construed as limiting the present patent.

Detailed Description

It should be noted that, in the case of no conflict, the embodiments of the present utility model and the technical features of the embodiments may be combined with each other, and the detailed description in the specific embodiments should be interpreted as an explanation of the gist of the present utility model and should not be construed as unduly limiting the present utility model.

In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the specific technical solutions of the present utility model will be described in further detail below with reference to the accompanying drawings in the embodiments of the present utility model. The following examples are illustrative of the utility model and are not intended to limit the scope of the utility model.

In embodiments of the present utility model, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the embodiments of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

Furthermore, in the embodiments of the present utility model, the terms "left," "right," and the like are defined relative to the orientation in which the components are schematically illustrated in the drawings, and it should be understood that these directional terms are relative concepts, which are used for the description and clarity of the drawings, and which may be varied accordingly with respect to the orientation in which the components are illustrated in the drawings.

In the embodiments of the present utility model, unless explicitly specified and limited otherwise, the term "connected" shall be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral unit, and may be directly connected or indirectly connected through an intermediary.

In embodiments of the present utility model, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion. Without further limitation, an element defined by the phrase "comprising one does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

In embodiments of the utility model, words such as "exemplary" or "such as" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "e.g." in an embodiment of the present utility model is not to be taken as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion.

The embodiment of the utility model provides a solenoid valve for solving the problems of complex structure, complex working control program, high cost and the like of the three-position three-way solenoid valve in the prior art.

An electromagnetic valve according to an embodiment of the present utility model, as shown in fig. 1 to 4, includes a valve body 10, a coil 20, a first valve core 30, and a second valve core 40.

Wherein the valve body 10 is provided with a through chamber 101 and a first medium opening 102, a second medium opening 103 and a third medium opening 104 communicating with the through chamber 101.

The coil 20 is wound around the valve body 10.

The first valve core 30 is arranged in the conducting chamber 101, the first valve core 30 comprises a first permanent magnet, and the first valve core 30 can be displaced to close or open the first medium opening 102 under the excitation action of the coil 20.

The second valve core 40 is disposed in the conducting chamber 101, the second valve core 40 includes a second permanent magnet, the second permanent magnet faces the first permanent magnet in the same polarity, and the second valve core 40 can displace to close or open the second medium opening 103 under the excitation action of the coil 20.

The solenoid valve has a first conductive state in which the coil 20 is in a first energized state to displace the first spool 30 to open the first medium opening 102 and the second spool 40 to displace the second medium opening 103 so that the first medium opening 102 is in communication with the third medium opening 104, a second conductive state in which the coil 20 is in a second energized state to displace the first spool 30 to close the first medium opening 102 and the second spool 40 to open the second medium opening 103 so that the second medium opening 103 is in communication with the third medium opening 104, and a third conductive state in which the coil 20 is in a third energized state to displace the first spool 30 to close the first medium opening 102 and the second spool 40 to close the second medium opening 103 so that the first medium opening 102, the second medium opening 103, and the third medium opening 104 are in off communication.

This embodiment can be understood that when the solenoid valve makes the coil 20 in the first energized state, the coil 20 generates a magnetic field, the first valve core 30 is caused to displace and open the first medium opening 102 by the excitation action, and simultaneously the excitation action causes the second valve core 40 to displace and close the second medium opening 103, so that the first medium opening 102 and the third medium opening 104 are conducted, at this time, the solenoid valve can be in an inflated state, when the solenoid valve makes the coil 20 in the second energized state, the coil 20 generates a magnetic field, and simultaneously the excitation action causes the first valve core 30 to displace and close the first medium opening 102, and simultaneously the excitation action causes the second valve core 40 to displace and open the second medium opening 103, so that the second medium opening 103 and the third medium opening 104 are conducted, at this time, the solenoid valve can be in a deflated state, and when the coil 20 is in the third energized state, the first valve core 30 is caused to displace and close the second medium opening 102, the second medium opening 103 and the third medium opening 104 are turned off, at this time, the solenoid valve is in a pressure maintaining state.

The first energized state of the coil 20 may be a state in which the coil 20 is energized with a forward current, the second energized state of the coil 20 may be a state in which the coil 20 is energized with a reverse current, the third energized state of the coil 20 may be a state in which the coil 20 is not energized, or the coil 20 may be in a de-energized state.

In this embodiment, as a preferred embodiment, the coil 20 is wound on the outer wall of the valve body 10, and the coil 20 and the first and second valve spools 30 and 40 may be concentrically disposed, or axis-parallel disposed, and the winding area of the coil 20 on the valve body 10 corresponds to the conduction chamber 101 of the valve body 10. Further, it can be confirmed that the first spool 30 and the second spool 40 are located on both sides of the bisector of the coil 20 in the direction orthogonal to the axial direction thereof, respectively, in the axial direction of the first spool 30 and the second spool 40. The first valve core 30 and the second valve core 40 are movably arranged in the conduction chamber 101 of the valve body 10, a certain gap exists between the first valve core 30 and the second valve core 40 and the inner wall of the conduction chamber 101 of the valve body 10, the first medium opening 102 and the second medium opening 103 are respectively arranged at two opposite ends of the conduction chamber 101 of the valve body 10 and respectively serve as an air inlet and an air outlet, and the third medium opening 104 is formed in the side wall of the valve body 10 and serves as an air charging opening. When inflated, gas entering from the first medium opening 102 passes through the gap between the first valve element 30 and the inner wall of the conduction chamber 101 and the gap between the second valve element 40 and the inner wall of the conduction chamber 101, and enters the third medium opening 104. During venting, the gas of the third medium opening 104 is discharged from the second medium opening 103 through the conducting chamber 101. In the pressure maintaining state, the first valve element 30 and the second valve element 40 close the first medium opening 102 and the second medium opening 103, respectively. Under different energization states, the coil 20 excites the first valve core 30 and the second valve core 40 to displace, so as to control the on-off between the first medium opening 102 and the third medium opening 104, and between the second medium opening 103 and the third medium opening 104.

In addition, in this embodiment, as a preferred embodiment, a wire groove is provided on the outer wall of the valve body 10, the wire groove being provided around the outer wall of the valve body 10, and the coil 20 being wound in the wire groove. The two ends of the coil 20 are connected with pins 110, so as to be connected with a power supply through the pins 110.

As an alternative embodiment of the present utility model, the first valve core 30 may be entirely permanent magnets, that is, entirely first permanent magnets, or partially permanent magnets, that is, including first permanent magnets, and when the first valve core 30 is partially permanent magnets, that is, the first permanent magnets are provided as partial members on the first valve core 30. Accordingly, the second valve core 40 may be entirely permanent magnets, that is, entirely second permanent magnets, or partially permanent magnets, that is, include second permanent magnets, when the second valve core 40 is partially permanent magnets, that is, the second permanent magnets are provided as partial components on the second valve core 40. The first valve core 30 includes a first permanent magnet, the second valve core 40 includes a second permanent magnet, and the first permanent magnet and the second permanent magnet are homopolar opposite, so that the first valve core 30 and the second valve core 40 will be excited to move in the same direction under the current state of the coil 20, so that the first medium opening 102 and the second medium opening 103 have different open/close states, for example, when the coil 20 is excited to apply forward current, the first valve core 30 and the second valve core 40 are excited to move in the direction approaching the second medium opening 103, the first valve core 30 opens the first medium opening 102 and the second valve core 40 closes the second medium opening 103, or when the coil 20 is excited to apply reverse current, the first valve core 30 and the second valve core 40 are excited to move in the direction approaching the first medium opening 102, the first valve core 30 closes the first medium opening 102 and the second valve core 40 opens the second medium opening 103.

According to the electromagnetic valve provided by the embodiment of the utility model, the single coil 20 is arranged, and according to the electrified state of the coil 20, the excitation controls the first valve core 30 to displace to open the first medium opening 102, simultaneously enables the second valve core 40 to displace to close the second medium opening 103 so as to enable the first medium opening 102 to be conducted with the third medium opening 104, or the excitation controls the second valve core 40 to displace to open the second medium opening 103, simultaneously enables the first valve core 30 to displace to close the first medium opening 102 so as to enable the second medium opening 103 to be conducted with the third medium opening 104, or the excitation controls the first valve core 30 to displace to close the first medium opening 102 and enables the second valve core 40 to displace to close the second medium opening 103 so as to enable the first medium opening 102, the second medium opening 103 and the third medium opening 104 to be cut off and conducted. Realize the on-off relation between accurate control first medium opening 102, second medium opening 103 and the third medium opening 104, compare traditional two tee bend solenoid valve, can realize aerifing, air leakage and pressurize function, and compare traditional three tee bend solenoid valve, when can realize stable regulation and control to aerify, air leakage, pressurize, reduce the setting of coil and valve body, the space occupancy of cost and reduction whole valve structure, and application scope is wider, all is suitable for pneumatic massage system, pneumatic waist support braced system etc..

In the third electrical conduction state (the power-off state) of the coil 20, the first valve core 30 closes the first medium opening 102 and the second valve core 40 closes the second medium opening 103, specifically, the first electrical conduction state may be realized by the homopolar repulsive interaction of the first permanent magnet of the first valve core 30 and the second permanent magnet of the second valve core 40, wherein the first valve core 30 is displaced away from the second valve core 40 under the magnetic repulsive force to close the first medium opening 102, and the second valve core 40 is displaced away from the first valve core 30 under the magnetic repulsive force to close the second medium opening 103. Alternatively, in the third energized state (the de-energized state) of the coil 20, the first valve element 30 may close the first medium opening 102 and the second valve element 40 may close the second medium opening 103 by the action of the reset element.

In some alternative embodiments, the solenoid valve further comprises a first reset element 50, the first reset element 50 being disposed within the pass-through chamber 101 to resiliently actuate the first valve spool 30 to close or open the first media opening 102.

In the present embodiment, the first reset element 50 is optional but not limited to a spring, in that the first valve element 30 can be displaced to close or open the first medium opening 102 under the excitation of the coil 20, and the first reset element 50 can elastically drive the first valve element 30 to close or open the first medium opening 102.

Based on the functions of the first reset element 50 described above, the setting position of the first reset element 50 includes two cases:

First, the first reset element 50 may be disposed between the first valve core 30 and the second valve core 40, and in a normal state (a state in which the coil 20 is not supplied with current), elastically drives the first valve core 30 to close the first medium opening 102. At this time, a first stopper may be provided between the first valve body 30 and the second valve body 40 so that both ends of the first return element 50 are respectively abutted against the first valve body 30 and the first stopper.

In the present embodiment, the first resisting member may be provided as a movable member or a fixed member, which is disposed in the conduction chamber 101 and between the first valve element 30 and the second valve element 40.

When the first resisting member is provided as a movable member, the specific structure of the first resisting member can be seen from a bracket 70 described later, and the first resisting member can be displaced in the conducting chamber 101 under the forcing of the first valve core 30 and/or the second valve core 40 according to different energizing states of the coil 20.

When the first resisting member is configured as a fixing member, the specific structure thereof may be a limiting table extending and protruding from the inner wall of the conducting chamber 101 toward the axial direction of the conducting chamber 101, and two ends of the first reset element 50 are respectively abutted against the first valve core 30 and the limiting table.

Second, the first reset element 50 may be further disposed between the first valve core 30 and the inner wall of the valve body 10 provided with the first medium opening 102, and in a normal state (a state in which no current is applied to the coil 20), the first valve core 30 is elastically driven to open the first medium opening 102. At this time, both ends of the first reset element 50 are respectively abutted against the first valve element 30 and the inner wall of the valve body 10 where the first medium opening 102 is opened.

In some alternative embodiments, the solenoid valve further comprises a second reset element 60, the second reset element 60 being disposed within the pass through chamber 101 to resiliently actuate the second valve spool 40 to close or open the second media opening 103.

In the present embodiment, the second reset element 60 is optional but not limited to a spring, in view of the fact that the second valve core 40 can be displaced to close or open the second medium opening 103 under the excitation of the coil 20, and the second reset element 60 can elastically drive the second valve core 40 to close or open the second medium opening 103.

Based on the functions of the second reset element 60 described above, the setting position of the second reset element 60 includes two cases:

First, the second reset element 60 may be disposed between the first valve core 30 and the second valve core 40, and in a normal state (a state in which the coil 20 is not supplied with current), elastically drives the second valve core 40 to close the second medium opening 103. At this time, a second stopper may be provided between the first valve body 30 and the second valve body 40 so that both ends of the second return element 60 are respectively abutted against the second valve body 40 and the second stopper.

In the present embodiment, the second resisting member may be provided as a movable member or a fixed member, which is disposed in the conduction chamber 101 and between the first valve element 30 and the second valve element 40.

When the second resisting member is provided as a movable member, the specific structure thereof can be seen from the bracket 70 described later, and the second resisting member can be displaced in the conduction chamber 101 under the forcing of the first valve core 30 and/or the second valve core 40 according to different energizing states of the coil 20.

When the second resisting member is configured as a fixing member, the specific structure thereof may be a limiting table extending and protruding from the inner wall of the conducting chamber 101 toward the axial direction of the conducting chamber 101, and two ends of the second reset element 60 are respectively abutted against the second valve core 40 and the limiting table.

Second, the second reset element 60 may be further disposed between the second valve core 40 and the inner wall of the valve body 10 where the second medium opening 103 is formed, and in a normal state (a state where the coil 20 is not supplied with current), elastically drives the second valve core 40 to open the second medium opening 103. At this time, both ends of the second return element 60 are respectively abutted against the second valve body 40 and the inner wall of the valve body 10 where the second medium opening 103 is opened.

As a preferred embodiment, when the first and second stoppers are provided as movable members, the first and second stoppers may share the same bracket 70.

In some alternative embodiments, the solenoid valve further includes a first reset element 50, a second reset element 60, and a bracket 70. The support 70 is disposed in the conduction chamber 101 and is located between the first valve core 30 and the second valve core 40, the first end of the first reset element 50 is operatively connected to the support 70, the second end is operatively connected to the first valve core 30, the first reset element 50 elastically drives the first valve core 30 to close the first medium opening 102, the second end of the second reset element 60 is operatively connected to the support 70, the first end is operatively connected to the second valve core 40, and the second reset element 60 elastically drives the second valve core 40 to close the second medium opening 103.

The support 70 may be any material, such as a magnetically permeable material or a non-magnetically permeable material, preferably a non-magnetically permeable support, such as a plastic support, to reduce interference of magnetic repulsion between the first permanent magnet of the first valve element 30 and the second permanent magnet of the second valve element 40.

In this embodiment, as a preferred embodiment, the first reset element 50 is optionally but not limited to a spring, and a first positioning groove corresponding to a first end of the first reset element 50 is provided on the bracket 70, where the first end of the first reset element 50 is positioned in the first positioning groove, so as to limit the first reset element 50.

In some alternative embodiments, the second reset element 60 may be, but is not limited to, a spring, and a second positioning groove corresponding to a second end of the second reset element 60 is provided on the bracket 70, and the second end of the second reset element 60 is positioned in the second positioning groove, so as to limit the second reset element 60.

In some alternative embodiments, first and second detents are provided at opposite ends of the carrier 70, the first and second detents being coaxially disposed and separated by a dividing wall to simultaneously position the first and second reset elements 50, 60.

In this embodiment, the bracket 70 is movably disposed in the conducting chamber 101, and a certain gap exists between the bracket 70 and the inner wall of the conducting chamber 101 of the valve body 10 for allowing the gas to circulate. At this time, the first reset element 50 and the second reset element 60 have the same elastic coefficient.

In some alternative embodiments, the support 70 is disposed in the conducting chamber 101 in a limiting manner, at this time, a limiting table extends from the inner wall of the conducting chamber 101 near the second valve core 40 to the center of the conducting chamber 101 to limit the displacement distance of the support 70 in the direction of the second valve core 40, that is, the limiting table can limit the movement of the support 70 in the direction of the second medium opening 103, at this time, the elastic coefficient of the first reset element 50 is greater than that of the second reset element 60, and the support 70 and the limiting table isolate the first valve core 30 from the stress of the second valve core 40, so as to avoid the force generated by the high air pressure of the air inlet of the first medium opening 102 from being transmitted to the second valve core 40, and thus the second valve core 40 is not easy to open.

In some alternative embodiments, the solenoid valve further includes a reset element disposed within the pass-through chamber 101, the reset element resiliently driving the first spool 30 to close the first media opening 102 and resiliently driving the second spool 40 to close the second media opening 103.

That is, in the present embodiment, the reset element is provided between the first valve element 30 and the second valve element 40, both ends of the reset element are respectively abutted against the first valve element 30 and the second valve element 40, and in a normal state (a state in which the coil 20 is not energized), the reset element elastically drives the first valve element 30 to close the first medium opening 102 and elastically drives the second valve element 40 to close the second medium opening 103 at the same time.

In this embodiment, as a preferred embodiment, the reset element may be, but not limited to, a spring, and in order to implement limiting of the reset element, a bracket capable of limiting the reset element may be disposed between the first valve core 30 and the second valve core 40, the bracket is movably disposed in the conducting chamber 101, and the bracket is provided with a through hole penetrating through the bracket along the movement direction of the first valve core 30 and/or the second valve core 40, the reset element penetrates through the through hole of the bracket, and two ends of the reset element are respectively connected to the first valve core 30 and the second valve core 40.

In some alternative implementations, a limiting table may extend from a relative position between the first valve core 30 and the second valve core 40 of the conducting chamber 101 in the axial direction of the conducting chamber 101, where a length of the limiting table along a movement direction of the first valve core 30 and/or the second valve core 40 may be smaller than a compressed length of the reset element, and the limiting table is provided with a through hole penetrating through the limiting table along the movement direction of the first valve core 30 and/or the second valve core 40, and the reset element passes through the through hole of the limiting table, and two ends of the reset element are respectively connected to the first valve core 30 and the second valve core 40.

In this embodiment, as a preferred embodiment, a first sealing member 301 is disposed on an end face of the first valve element 30 facing the first medium opening 102, where the first sealing member 301 may be a rubber pad, and the first valve element 30 seals the first medium opening 102 through the first sealing member 301, so as to improve the sealing effect on the first medium opening 102.

In this embodiment, as a preferred embodiment, a second sealing member 401 is disposed on an end face of the second valve element 40 facing the second medium opening 103, where the second sealing member 401 may be a rubber pad, and the second valve element 40 seals the second medium opening 103 through the second sealing member 401, so as to improve the sealing effect on the second medium opening 103.

In this embodiment, as a preferred embodiment, a clamping groove 105 communicating with the second medium opening 103 is formed in the valve body 10, and noise-reducing cotton may be embedded in the clamping groove 105 to reduce noise and noise in the air leakage state of the electromagnetic valve.

This embodiment is a preferred embodiment, and the solenoid valve further includes an air inlet nozzle 80 and an air charging nozzle 90.

Wherein, the air inlet nozzle 80 is provided with an air inlet channel 801, and the air charging nozzle 90 is provided with an air charging channel 901.

In this embodiment, the air inlet nozzle 80 may be integrally formed with the end of the valve body 10 where the first medium opening 102 is located, and the air inlet channel 801 is in communication with the first medium opening 102, or the air inlet nozzle 80 may be formed with the first medium opening 102 and connected to the body portion of the conducting chamber 10 of the valve body 10 in a sealing manner by the third sealing member 810, that is, the first medium opening 102 is opened at the connection end of the air inlet nozzle 80 with the valve body 10 and is in communication with the air inlet channel 801, and is also in fluid communication with the conducting chamber 101. The connection relationship between the air inlet nozzle 80 and the valve body 10 can be optimized according to the actual molding requirement, and this embodiment will not be described in detail.

And the air inlet nozzle 80 is connected to the valve body 10, the air inlet channel 801 is in fluid communication with the first medium opening 102, so that the valve body 10 is in fluid communication with the air supply unit through the air inlet nozzle 80.

In addition, the charging nozzle 90 may be integrally formed with the end of the valve body 10 where the third medium opening 104 is located, and the charging channel 901 is in communication with the third medium opening 104, or the charging nozzle 90 may be formed with the third medium opening 104 and connected to the body portion of the conducting chamber 10 of the valve body 10 through the fourth sealing member in a sealing manner, that is, the third medium opening 104 is opened at the connection end of the charging nozzle 90 with the valve body 10 and is in communication with the charging channel 901, and is also in fluid communication with the conducting chamber 101. The connection relationship between the charging nozzle 90 and the valve body 10 can be optimized according to actual production requirements, and this embodiment will not be described in detail.

And inflation nozzle 90 is connected to valve body 10, inflation channel 901 is in fluid communication with third media opening 104, such that valve body 10 is in fluid communication with the air-using unit through inflation nozzle 90.

In addition, the embodiment of the utility model also provides a pneumatic comfort system, which can be a pneumatic massage system, a pneumatic waist support system or a pneumatic flank support system. Referring to fig. 5, the pneumatic comfort system includes a plurality of air bags 100, an air supply unit 200, and the solenoid valve according to any of the above embodiments, wherein the air supply unit 200 is connected to the air bags 100 through the solenoid valve.

Specifically, the air supply unit 200 is in fluid communication with the first medium opening 102 or the second medium opening 103 of the valve body 10, and the air bag 100 is in fluid communication with the third medium opening 104 of the valve body 10.

In this embodiment, when the inflation/deflation control of the pneumatic comfort system is performed, the third medium opening 104 is an inflation port connected to the air bag 100, the first medium opening 102 is an air inlet connected to the air supply unit 200, and the second medium opening 103 is an air discharge port.

In view of the above-described structure of the solenoid valve according to the embodiment, the air inlet nozzle 80 is provided at the end of the valve body 10 where the first medium opening 102 is located, and the air charging nozzle 90 is provided at the end of the valve body 10 where the third medium opening 104 is located, so that the air supply unit 200 is in fluid communication with the air inlet nozzle 80 through the air pipe, and the air bag 100 is in fluid communication with the air charging nozzle 90 through the air pipe.

When the solenoid valve makes the coil 20 in the first electrified state, the first valve core 30 is made to displace to open the first medium opening 102, and simultaneously makes the second valve core 40 to displace to close the second medium opening 103, so that the first medium opening 102 is conducted with the third medium opening 104, at this time, the air supply unit 200 inflates the air bag 100, when the coil 20 is in the third electrified state, the first valve core 30 is made to displace to close the first medium opening 102, and simultaneously makes the second valve core 40 to displace to close the second medium opening 103, so that the first medium opening 102, the second medium opening 103 and the third medium opening 104 are closed, at this time, the air bag 100 is in a pressure maintaining state, and when the solenoid valve makes the coil 20 in the second electrified state, the first valve core 30 is made to displace to close the first medium opening 102, and simultaneously the second valve core 40 is made to displace to open the second medium opening 103, so that the second medium opening 103 is conducted with the third medium opening 104, at this time, the air bag 100 leaks through the third medium opening 104 and the second medium opening 103.

The first energized state of the coil 20 may be a state in which the coil 20 is energized with a forward current, the second energized state of the coil 20 may be a state in which the coil 20 is energized with a reverse current, the third energized state of the coil 20 may be a state in which the coil 20 is not energized, or the coil 20 may be in a de-energized state.

In a preferred embodiment, the air supply unit 200 includes an air pump, an air compressor, or an air storage device, such as a gas cylinder or air tank. In other preferred embodiments, the solenoid valve and air supply unit 200 may also be a pump valve integrated structure integrating an air valve and an air pump.

According to the pneumatic comfort system provided by the embodiment of the utility model, the electromagnetic valve is adopted to communicate the air supply unit 200 and the air bag 100 so as to control the inflation, deflation or pressure maintaining of the air bag 100, and the adopted electromagnetic valve has a simple structure, so that the accurate control of the air flow can be realized, and the stable pressure regulation of the air bag 100 is realized, so that the pneumatic comfort system has a better function regulation effect.

The foregoing embodiment numbers of the present utility model are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments. The foregoing is merely a preferred embodiment of the present utility model and is merely exemplary of the present utility model and is not intended to limit the scope of the present utility model. Other variations or modifications of the various aspects will be apparent to persons skilled in the art from the foregoing description, and it is not necessary nor intended to be exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims (10)

1. A solenoid valve, comprising:

A valve body (10) provided with a conduction chamber (101), a first medium opening (102), a second medium opening (103), and a third medium opening (104) that communicate with the conduction chamber (101);

a coil (20) wound around the valve body (10);

a first valve core (30) arranged in the conduction chamber (101), wherein the first valve core (30) comprises a first permanent magnet, the first valve core (30) can be used for closing or opening the first medium opening (102) in a displacement mode under the excitation action of the coil (20), and

The second valve core (40) is arranged in the conduction chamber (101), the second valve core (40) comprises a second permanent magnet, and the second permanent magnet and the first permanent magnet are homopolar and opposite to each other, and the second valve core (40) can be used for closing or opening the second medium opening (103) in a displacement mode under the excitation action of the coil (20);

The solenoid valve has a first conductive state in which the coil (20) is in a first conductive state to cause the first spool (30) to displace and open the first medium opening (102) and the second spool (40) to displace and close the second medium opening (103), a first conductive state in which the first medium opening (102) is in communication with the third medium opening (104), and a second conductive state in which the coil (20) is in a second conductive state to cause the first spool (30) to displace and close the first medium opening (102) and the second spool (40) to displace and open the second medium opening (103) so that the second medium opening (103) is in communication with the third medium opening (104), and a second conductive state in which the coil (20) is in a third conductive state to cause the first spool (30) to displace and close the first medium opening (102) and the second spool (40) to displace and close the second medium opening (103) so that the first medium opening (102) is in communication with the third medium opening (104).

2. The solenoid valve according to claim 1, further comprising a first return element (50), said first return element (50) being disposed within said pass-through chamber (101), said first spool (30) being elastically driven to close or open said first media opening (102).

3. The electromagnetic valve according to claim 1, further comprising a second return element (60), wherein the second return element (60) is disposed in the conducting chamber (101), and wherein the second valve element (40) is elastically driven to close or open the second medium opening (103).

4. The solenoid valve of claim 1 further including a first reset element (50), a second reset element (60) and a bracket (70), said bracket (70) disposed within said pass-through chamber (101) and positioned between said first spool (30) and said second spool (40), said first reset element (50) operatively connected at a first end to said bracket (70) and at a second end to said first spool (30), said first reset element (50) resiliently driving said first spool (30) to close said first media opening (102), said second reset element (60) operatively connected at a second end to said bracket (70), said first end operatively connected to said second spool (40), said second reset element (60) resiliently driving said second spool (40) to close said second media opening (103).

5. The solenoid valve according to claim 4, characterized in that said bracket (70) is provided with a first positioning groove corresponding to a first end of said first return element (50), said first end of said first return element (50) being positioned in said first positioning groove.

6. The solenoid valve according to claim 4, characterized in that said bracket (70) is provided with a second positioning groove corresponding to a second end of said second return element (60), said second end of said second return element (60) being positioned in said second positioning groove.

7. The solenoid valve according to any one of claims 4 to 6, characterized in that said support (70) is movably arranged in said pass-through chamber (101) and said first return element (50) and said second return element (60) have the same elastic coefficient.

8. The solenoid valve according to any one of claims 4 to 6, characterized in that said bracket (70) is disposed in said pass-through chamber (101) with a higher elastic coefficient of said first return element (50) than that of said second return element (60).

9. The solenoid valve of claim 1 further including a reset element disposed within said pass-through chamber (101) and resiliently driving said first spool (30) to close said first media opening (102) and resiliently driving said second spool (40) to close said second media opening (103).

10. A pneumatic comfort system, comprising:

A plurality of air bags (100);

a gas supply unit (200);

and a solenoid valve according to any one of claims 1 to 9, said air supply unit (200) being connected to said air bag (100) by means of said solenoid valve;

Wherein the gas supply unit (200) is in fluid communication with the first medium opening (102) or the second medium opening (103) of the valve body (10), and the gas bag (100) is in fluid communication with the third medium opening (104) of the valve body (10).