CN219841119U - Solenoid valve module and pneumatic system - Google Patents

Abstract

The utility model provides an electromagnetic valve module and a pneumatic system. The electromagnetic valve module comprises a first electromagnetic valve body, a second electromagnetic valve body, a static iron core, a first movable iron core assembly, a second movable iron core assembly, a first magnetism gathering component and a second magnetism gathering component. The first electromagnetic valve body is provided with a first containing cavity. The second electromagnetic valve body is provided with a second containing cavity. The static iron core is fixedly connected with the first electromagnetic valve body and the second electromagnetic valve body. The first end of the static iron core is at least partially positioned in the first accommodating cavity, and the second end of the static iron core is at least partially positioned in the second accommodating cavity. The first magnetism collecting member includes a first arm and a second arm. The second magnetism gathering component and the first magnetism gathering component are arranged in a staggered mode along the length direction. The second magneto-polymeric component comprises a third arm and a fourth arm. The first arm, the third arm, the second arm and the fourth arm are sequentially arranged at intervals along the length direction. The utility model can increase the magnetic field intensity generated by electrifying the electromagnetic structure, is beneficial to miniaturization and simplification of the electromagnetic valve module, and has stable structure and simple assembly.

Description

Solenoid valve module and pneumatic system

Technical Field

The present utility model relates generally to the technical field of automotive accessories, and more particularly to a solenoid valve module and a pneumatic system.

Background

The inflation, deflation and pressure maintaining functions of the existing pneumatic product are difficult to achieve by adopting one electromagnetic valve, and the electromagnetic valve module product is usually adopted, namely at least 2 electromagnetic valves are combined in series and/or in parallel to achieve the function of the pneumatic product, and the electromagnetic valve module product often has the problems that the strength of a magnetic field generated when an electromagnetic structure is electrified is insufficient, the appearance size is large, the assembly is complex, the cost is high and the like.

Accordingly, there is a need to provide a solenoid valve module and a pneumatic system that at least partially solve the above-mentioned problems.

Disclosure of Invention

In the summary, a series of concepts in a simplified form are introduced, which will be further described in detail in the detailed description. The summary of the utility model is not intended to limit the critical and essential features of the claimed subject matter, nor is it intended to be used to determine the scope of the claimed subject matter.

To at least partially solve the above problems, a first aspect of the present utility model provides a solenoid valve module for assembly to a circuit board, the solenoid valve module comprising:

the first electromagnetic valve body is provided with a first containing cavity;

the second electromagnetic valve body is provided with a second containing cavity;

the static iron core is fixedly connected with the first electromagnetic valve body and the second electromagnetic valve body, the first end of the static iron core is at least partially positioned in the first accommodating cavity, and the second end of the static iron core is at least partially positioned in the second accommodating cavity;

a first movable core assembly movably disposed and at least partially within the first cavity;

a second movable core assembly movably disposed and at least partially within the second cavity;

a first magnetism collecting member including a first arm and a second arm mounted to the stationary core;

a second magnetism collecting member configured to be offset from the first magnetism collecting member in a length direction, the second magnetism collecting member including a third arm and a fourth arm, the third arm being mounted to the stationary core;

the first arm, the third arm, the second arm and the fourth arm are sequentially arranged at intervals along the length direction.

According to the electromagnetic valve module, the electromagnetic valve module is used for being assembled on the installation plane of the circuit board, the two electromagnetic valve assemblies are connected in series through the staggered arrangement of the two magnetic gathering members, each magnetic gathering member is provided with two arms, one arm is installed on the static iron core, the arms of the two magnetic gathering members, which are installed on the static iron core, are staggered in the length direction, namely, the arm of one magnetic gathering member, which is installed on the static iron core, is closer to the other arm of the other magnetic gathering member, which is not installed on the static iron core, than the arm of the other magnetic gathering member, in the length direction.

Optionally, the first magnetism collecting member further includes a first connection portion, the second magnetism collecting member further includes a second connection portion, the first connection portion is configured to be disposed opposite to the mounting plane of the circuit board in the height direction, and the second connection portion is located at one of both sides of the solenoid valve module in the width direction.

Optionally, the first connection portion is configured as a plate-like structure and is parallel to the mounting plane;

the second connection portion is configured in a plate-like structure and perpendicular to the mounting plane.

Optionally, the middle part of the static iron core is provided with a first flange structure extending along the circumferential direction,

the third arm is configured to cooperate with a face of the first flange structure proximate the first solenoid valve body to axially constrain the stationary core,

the second arm is configured to cooperate with another face of the first flange structure remote from the first solenoid valve body to axially constrain the stationary core.

Optionally, the static iron core is provided with a second flange structure and a third flange structure extending along the circumferential direction, the second flange structure and the third flange structure are positioned at two sides of the first flange structure along the length direction, the radial dimension of the second flange structure and the third flange structure is smaller than the radial dimension of the first flange structure,

the third arm is configured in a U-shaped structure in the width direction and straddles the outer periphery of the second flange structure to form a fit,

the second arm is configured in a U-shaped structure in the width direction and straddles the outer periphery of the third flange structure to form a fit.

Optionally, a first step hole is formed at one end of the first electromagnetic valve body facing the second electromagnetic valve body so as to form a fit with the second flange structure;

and one end of the second electromagnetic valve body, which faces the first electromagnetic valve body, is provided with a second step hole so as to be matched with the third flange structure.

Optionally, the first solenoid valve body includes a first stop member, the third arm being located between the first stop member and the first flange structure;

the second solenoid valve body includes a second stop member, and the second arm is located between the second stop member and the first flange structure.

Optionally, the first solenoid valve body further comprises a third stop member configured to be in stop fit with the first arm;

the second solenoid valve body further includes a fourth stop member configured to be in stop engagement with the fourth arm.

Optionally, the first solenoid valve body is provided with a first channel and a second channel, the second solenoid valve body is provided with a third channel, and the second channel is configured to allow communication with the first channel or the third channel, respectively.

A second aspect of the utility model provides a pneumatic system comprising:

a solenoid valve module according to any one of the preceding aspects;

the electromagnetic valve module is mounted on the mounting plane of the circuit board;

an air pump configured to communicate with one of the first and third channels of the solenoid valve module; and

an air bladder configured to communicate with the second passage of the solenoid valve module.

According to the pneumatic system of the present utility model, the technical effects similar to those of the electromagnetic valve module of the first aspect can be achieved.

Drawings

The following drawings of embodiments of the present utility model are included as part of the utility model. Embodiments of the present utility model and their description are shown in the drawings to explain the principles of the utility model. In the drawings of which there are shown,

FIG. 1 is a schematic exploded view of a solenoid valve module according to a preferred embodiment of the present utility model;

FIG. 2 is a schematic side cross-sectional view of a solenoid valve module according to a preferred embodiment of the utility model;

FIG. 3 is a schematic perspective view of a first solenoid valve body according to a preferred embodiment of the utility model;

FIG. 4 is a perspective view of another view of the first solenoid valve body according to FIG. 3;

FIG. 5 is a schematic side cross-sectional view of the first solenoid valve body according to FIG. 3;

fig. 6 is a perspective view of a second solenoid valve body according to a preferred embodiment of the utility model;

FIG. 7 is a perspective view of another view of the second solenoid valve body according to FIG. 6;

FIG. 8 is a schematic side cross-sectional view of the second solenoid valve body according to FIG. 6;

FIG. 9 is a schematic perspective view of a first magnetic focusing member according to a preferred embodiment of the present utility model;

FIG. 10 is a schematic cross-sectional view of a first magnetically focused element according to a preferred embodiment of the present utility model;

fig. 11 is a perspective view of a stationary core according to a preferred embodiment of the present utility model;

fig. 12 is a schematic view of the stationary core shown in fig. 11 and viewed in an axial direction;

FIG. 13 is an assembly view of the first magnetic focusing member, the second magnetic focusing member, the first solenoid valve body, the second solenoid valve body and the stationary core showing the mating structure of the first arm with the first solenoid valve body, the mating structure of the fourth arm with the second solenoid valve body, and the mating structure of the third arm, the second arm with the first flange structure in accordance with a preferred embodiment of the present utility model;

FIG. 14 is an assembly view of the first magnetic focusing member, the second magnetic focusing member and the stationary core showing the mating structure of the third arm, the second arm and the first flange structure in accordance with a preferred embodiment of the present utility model;

fig. 15 is a connection structure of a solenoid valve module welded to a circuit board according to a preferred embodiment of the present utility model; and

fig. 16 is a connection structure of a solenoid valve module welded to a circuit board according to another preferred embodiment of the present utility model.

Reference numerals illustrate:

100/200: solenoid valve module 110: first electromagnetic valve body

111: first cavity 112: a first channel

113: second channel 114: a first step hole

115: first spacing member 116: third spacing component

116a: hole 117: a first protruding part

120: the second solenoid valve body 121: second cavity

122: third channel 124: second step hole

125: the second stopper member 125a: hole(s)

126: fourth spacing member 127: second protruding part

130: static iron core 131: first flange structure

132: second flange structure 133: third flange structure

134: first counter bore 135: second sinking platform hole

136: first annular recess 137: second annular groove

138: through hole 141: first drive assembly

142: second drive assembly 143: first core wire

144: second core wire 145: first sealing ring

146: second seal ring 147: noise reduction pad

160: first plunger assembly 161: first movable iron core

162: the first return elastic member 163: first sealing gasket

164: first cushion 170: second movable iron core assembly

171: second plunger 172: second reset elastic piece

173: second gasket 174: second buffer pad

180: first magnetism collecting member 181: first arm

182: second arm 183: first connecting part

190/290: second magnetic component 191/291: third arm

192/292: fourth arm 193/293: second connecting part

400: circuit board

Detailed Description

In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present utility model. It will be apparent, however, to one skilled in the art that embodiments of the utility model may be practiced without one or more of these details. In other instances, well-known features have not been described in detail in order to avoid obscuring the embodiments of the utility model.

In the following description, a detailed structure will be presented for a thorough understanding of embodiments of the present utility model. It will be apparent that embodiments of the utility model may be practiced without limitation to the specific details that are set forth by those skilled in the art. The preferred embodiments of the present utility model are described in detail below, however, the present utility model may have other embodiments in addition to the detailed description, and should not be construed as limited to the embodiments set forth herein.

It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model, as the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," and/or "including," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. The terms "upper", "lower", "front", "rear", "left", "right" and the like are used herein for illustrative purposes only and are not limiting.

Ordinal numbers such as "first" and "second" cited in the present utility model are merely identifiers and do not have any other meaning, such as a particular order or the like. Also, for example, the term "first component" does not itself connote the presence of "second component" and the term "second component" does not itself connote the presence of "first component".

Hereinafter, specific embodiments of the present utility model will be described in more detail with reference to the accompanying drawings, which illustrate representative embodiments of the present utility model and not limit the present utility model.

Fig. 1-16 illustrate a solenoid valve module 100 for assembly (preferably soldering) to a circuit board. The solenoid valve module 100 includes a first solenoid valve body 110, a second solenoid valve body 120, a stationary core 130, a first movable core assembly 160, a second movable core assembly 170, a first magnetism collecting member 180, and a second magnetism collecting member 190. The first solenoid valve body 110 has a first chamber 111. The second solenoid valve body 120 has a second chamber 121. The stationary core 130 is configured to be fixedly connected with the first solenoid valve body 110 and the second solenoid valve body 120. The first end of the stationary core 130 is at least partially located within the first cavity 111. The second end of the stationary core 130 is at least partially located within the second cavity 121. The first plunger assembly 160 is movably disposed and at least partially disposed within the first cavity 111. The second plunger assembly 170 is movably disposed and at least partially disposed within the second cavity 121. The first magnetism collecting member 180 includes a first arm 181 and a second arm 182. The second arm 182 is mounted to the stationary core 130. The second magnetism collecting member 190 is configured to be offset from the first magnetism collecting member 180 in the length direction. The second magneto-polymeric component 190 comprises a third arm 191 and a fourth arm 192. The third arm 191 is mounted to the stationary core. The first arm 181, the third arm 191, the second arm 182, and the fourth arm 192 are sequentially disposed at intervals in the length direction.

The solenoid valve module 100 according to the utility model is intended to be assembled (preferably soldered) to a circuit board, in particular to a mounting plane of the circuit board. The solenoid valve module 100 may be generally understood as two solenoid valve assemblies formed in series, and both solenoid valve assemblies may be normally closed solenoid valves. The first electromagnetic valve assembly can be regarded as a two-position three-way electromagnetic valve, and the second electromagnetic valve assembly can be regarded as a two-position three-way electromagnetic valve or a two-position two-way electromagnetic valve.

According to the electromagnetic valve module, the two magnetic gathering members are arranged in a staggered mode to connect the two electromagnetic valve assemblies in series, each magnetic gathering member is provided with two arms, one arm is mounted to the static iron core, the arms of the two magnetic gathering members mounted to the static iron core are arranged in a staggered mode in the length direction, namely, the arm of one magnetic gathering member mounted to the static iron core is closer to the other arm of the other magnetic gathering member, which is not mounted to the static iron core, in the length direction than the arm of the other magnetic gathering member mounted to the static iron core.

The directional terms used for the respective components, portions, etc. of the solenoid valve module described in the present utility model are with respect to the solenoid valve module in the horizontally placed and upright state, wherein the "longitudinal direction" is parallel to the axial direction of the stationary core, and the "height direction" is perpendicular to the mounting plane width direction "and is perpendicular to the longitudinal direction and the height direction.

As shown in fig. 1 to 8, a first passage 112 and a second passage 113 are opened at an end of the first solenoid valve body 110 remote from the stationary core 130. The end of the second solenoid valve body 120, which is far away from the stationary core 130, is provided with a third channel 122. The second passage 113 is configured to allow communication with the first passage 112 or the third passage 122, respectively. The second passage 113 communicates with the first chamber 111. The first passage 112 has a valve port capable of communicating with the first chamber 111. A first gas passage is formed between the outer circumference of the first plunger assembly 160 and the first solenoid valve body 110, and the first plunger assembly 160 is configured to move between a first closed position and a first open position to close or open the first passage 112 by the driving of the first driving assembly 141. A second gas passage is formed between the outer periphery of the second plunger assembly 170 and the second solenoid valve body 120, and the second plunger assembly 170 is configured to move between a second closed position and a second open position to close or open the third passage 122 under the driving of the second driving assembly 142. The stationary core 130 is provided with a through hole 138 penetrating in the axial direction. The first gas passage, the through hole 138, and the second gas passage communicate. The first solenoid valve body 110 includes a first stopper member 115 and a third stopper member 116, and the third stopper member 116 is farther from the stationary core 130 than the first stopper member 115. The second solenoid valve body 120 includes a second limiting member 125 and a fourth limiting member 126, the fourth limiting member 126 being farther from the stationary core than the second limiting member 125.

As shown in fig. 1, 2, 9 and 10, the first magnetism collecting member 180 includes a first arm 181, a second arm 182 and a first connecting portion 183. The first connecting portion 183 is configured to be disposed opposite to the mounting plane in the height direction. The second magneto-conductive member 190 includes a third arm 191, a fourth arm 192, and a second connection 193. The second connection portion 193 is located at one of both sides of the solenoid valve module 100 in the width direction. Preferably, the first connection portion 183 is configured as a plate-like structure and is parallel to the installation plane, and the second connection portion 193 is configured as a plate-like structure and is perpendicular to the installation plane. Further preferably, the first and second magnetic focusing members 180, 190 may be configured in the same shape and size, with the positions being interchangeable when applied.

Because the first channel 112 of the first magnetism collecting member 180 needs to be in communication with other solenoid valves and/or air supply devices (e.g., an air pump) in practical applications, and the bottom plane of the solenoid valve module 100 needs to be used for assembly (preferably welding) to a circuit board, when the magnetism collecting member is applied to the solenoid valve module 100 for assembly, both sides of the first magnetism collecting member 180 in the width direction and the bottom plane of the solenoid valve module 100 need to be avoided, and according to the solenoid valve module 100 of the present utility model, the first magnetism collecting member 180 and the second magnetism collecting member 190 are vertically staggered, specifically, in a preferred manner, are staggered by 90 ° (i.e., based on the view angle of the second solenoid valve body 120 looking at the first solenoid valve in the length direction, the second connecting portion 193 is located at the left side of the solenoid valve module 100) or in another embodiment are staggered by 270 ° (i.e., based on the view angle of the second solenoid valve body 120 looking at the first solenoid valve in the length direction, the second connecting portion 193 is located at the right side of the solenoid valve module 100) so as to simultaneously avoid both the bottom plane of the solenoid valve module 100 and the sides of the first magnetism collecting member 180 in the width direction.

After the driving component (such as a coil) is energized, the electromagnetic structure of the electromagnetic valve module 100 generates a magnetic field, and the magnetic focusing members (i.e., the first magnetic focusing member 180 and the second magnetic focusing member 190) can enhance the magnetic field strength generated by the electromagnetic structure, so as to facilitate driving the moving iron core component to move. The magnetic collecting component is preferably made of permanent magnetic material or electrical pure iron. As shown in fig. 1 and 2, the first driving assembly 141 may include a coil that may be sleeved outside the first solenoid valve body 110, particularly between the first limiting member 115 and the third limiting member 116. The second driving assembly 142 may include a coil that may be sleeved outside the second solenoid valve body 120, specifically between the second limiting member 125 and the fourth limiting member 126.

It can be appreciated that the coil is wound outside the first solenoid valve body 110 or the second solenoid valve body 120, and the magnetic force generated by the static iron core 130 will attract the moving iron core assembly after the current is applied. Specifically, the first movable core assembly 160 can move in the first cavity 111 in the longitudinal direction toward the stationary core 130 under the magnetic force, and the second movable core assembly 170 can move in the second cavity 121 in the longitudinal direction toward the stationary core 130 under the magnetic force.

As shown in fig. 1, 2, and 11-14, the stationary core 130 is configured to be fixedly connected to the first solenoid valve body 110 and the second solenoid valve body 120, a first end of the stationary core 130 is at least partially located in the first cavity 111, and a second end of the stationary core 130 is at least partially located in the second cavity 121. The stationary core 130 is provided at a central portion thereof with a first flange structure 131, a second flange structure 132 and a third flange structure 133 extending in a circumferential direction. The second flange structure 132 and the third flange structure 133 are located on two sides of the first flange structure 131 along the length direction, the radial dimensions of the second flange structure 132 and the third flange structure 133 are smaller than the radial dimensions of the first flange structure 131, and the radial dimensions of the second flange structure 132 and the third flange structure 133 are preferably equal. The first end of the static iron core 130 is provided with a first annular groove 136 at a portion located in the first accommodating cavity 111 for accommodating the first sealing ring 145, and sealing of gas is achieved through interference between the first sealing ring 145 and the inner side wall of the first electromagnetic valve body 110. The first annular groove 136 is remote from the first flange structure 131 relative to the second flange structure 132. The second end of the stationary core 130, which is located in the second accommodating cavity 121, is provided with a second annular groove 137 for accommodating a second sealing ring 146, and sealing of gas is achieved by interference of the second sealing ring 146 with the inner sidewall of the second solenoid valve body 120. The second annular recess 137 is remote from the first flange structure 131 relative to the third flange structure 133. A first end of the static iron core 130 is provided with a first counter hole 134 coaxial with the through hole 138, and the first counter hole 134 is configured to place at least part of the first reset elastic member 162 and limit the first reset elastic member 162; a second counter bore 135 coaxial with the through bore 138 is provided at a second end of the stationary core 130, the second counter bore 135 being configured to receive at least a portion of the second return spring 172 and to limit the second return spring 172.

The stationary core 130 can be generally regarded as a multi-step rotor structure, has magnetic conduction and air flow channels along the length direction, integrates the functions of connection and fixation, has a first end formed with the first solenoid valve body 110 to provide magnetic conduction for the first solenoid valve assembly, and has a second end formed with the second solenoid valve body 120 to provide magnetic conduction for the second solenoid valve assembly. Therefore, the electromagnetic valve module 100 of the utility model has simple structure, saves space and reduces cost.

The first solenoid valve body 110 and the second solenoid valve body 120 are connected in series and tightly fixed mainly through a mating structure to form a stable series solenoid valve module 100. In a preferred embodiment according to the utility model at least 5 mating structures are shown, in particular:

the third arm 191 of the second solenoid valve body 120, the first flange structure 131, and the second arm 182 of the first solenoid valve body 110 form a first mating structure. Specifically, a third arm 191 of the second solenoid valve body 120 is located between the first stop member 115 and the first flange structure 131, the third arm 191 being configured to cooperate with a face of the first flange structure 131 adjacent to the first solenoid valve body 110 to axially constrain the stationary core 130. The second arm 182 of the first solenoid valve body 110 is located between the second stop member 125 and the first flange structure 131, the second arm 182 being configured to cooperate with the other face of the first flange structure 131 remote from the first solenoid valve body 110 to axially constrain the stationary core 130. Preferably, the third arm 191 is configured in a U-shaped structure in the width direction and straddles the outer periphery of the second flange structure 132 to form a fit; the second arm 182 is configured in a U-shaped structure straddling the outer periphery of the third flange structure 133 in the width direction to form a fit.

The third stopper member 116 of the first solenoid valve body 110 is configured to be in a stopper fit with the first arm 181 to axially restrict the stationary core 130.

The fourth stop member 126 of the second solenoid valve body 120 is configured to be in a stop fit with the fourth arm 192 to axially limit the stationary core 130.

The first solenoid valve body 110 is provided at one end thereof facing the second solenoid valve body 120 with a first stepped hole 114 to form a fit with the second flange structure 132.

The end of the second solenoid valve body 120 facing the first solenoid valve body 110 is provided with a second stepped hole 124 to form a fit with the third flange structure 133.

It will be appreciated that other types and/or locations of mating structures or coupling structures may be employed by the solenoid valve module 100 to effect the combined securing of the first solenoid valve body 110 and the second solenoid valve body 120 if needed and/or desired.

As shown in fig. 1-3 and 6, the third stop member 116 is configured to open a pair of holes 116a for receiving the first core wires 143 and the second stop member 125 is configured to open a pair of holes 125a for receiving the second core wires 144. It will be appreciated that the shape of the hole is adapted to the shape of the core wire it receives, for example the core wire may be configured as a square strip, and that the internal shape of the hole may be configured as a square strip hole adapted thereto. The core wires are preferably configured in an L shape, and a portion of the pair of first core wires 143 perpendicular to the circuit board 400 passes through the hole 116a of the third limiting member 116 and is electrically connected (preferably welded) to the first driving assembly 141, and a portion parallel to the circuit board 400 is electrically connected to the positive and negative electrodes of the power source or both control ends of the circuit board circuit to enable the first solenoid valve assembly to be opened. Similarly, a portion of the pair of second core wires 144 perpendicular to the circuit board 400 passes through the hole 125a of the second limiting member 125 and is electrically connected (preferably welded) to the second driving assembly 142, and a portion parallel to the circuit board 400 is electrically connected to the positive and negative electrodes of the power supply or two control ends of the circuit board circuit, so as to realize opening of the second electromagnetic valve assembly.

As shown in fig. 1 and 2, the first movable core assembly 160 includes a first movable core 161 and a first return elastic member 162, and the first return elastic member 162 is configured to push the first movable core 161 in a direction away from the stationary core 130. The first plunger assembly 160 may further include a first gasket 163 and a first cushion 164. Both ends of the first movable core 161 may be provided with recesses to receive a portion of the first sealing pad 163 and a portion of the first buffer pad 164, respectively, and it is understood that the first sealing pad 163 and the first buffer pad 164 protrude at least partially from the first movable core 161 in a longitudinal direction in a natural state, particularly from a top surface of the corresponding first movable core 161, to better perform sealing and buffering functions. It will be appreciated that the first gasket 163 has a radial dimension greater than or equal to the radial dimension of the first passage 112 such that the first plunger assembly 160 is able to completely close the first passage 112 when the first drive assembly 141 is in the first closed position in the unpowered state.

The second moving core assembly 170 includes a second moving core 171 and a second return elastic member 172, and the second return elastic member 172 is configured to push the second moving core 171 in a direction away from the stationary core 130. The second plunger assembly 170 may further include a second gasket 173 and a second cushion 174. Both ends of the second moving iron core 171 in the length direction may be provided with recesses to receive a portion of the second sealing pad 173 and a portion of the second buffering pad 174, respectively, and it is understood that the second sealing pad 173 and the second buffering pad 174 protrude at least partially from the second moving iron core 171 in the length direction in a natural state, specifically, protrude from the top surface of the corresponding second moving iron core 171, so as to better perform sealing and buffering functions. It will be appreciated that the second gasket 173 has a radial dimension in the radial plane that is greater than or equal to the radial dimension of the third passage 122 such that the second plunger assembly 170 completely closes the third passage 122 when the second drive assembly 142 is in the second closed position in the unpowered state.

As shown in fig. 2, 5 and 8, the inner wall of the first solenoid valve body 110 is provided with a first protrusion 117 protruding toward the stationary core 130 in the length direction, the first protrusion 117 defining a port through which the first passage 112 communicates with the first chamber 111, further enhancing the sealing effect of the first gasket 163, and the communication of the second passage 113 with the first gas passage is more unobstructed when the first passage 112 is in a closed state. The inner wall of the second solenoid valve body 120 is provided with a second protrusion 127 protruding toward the stationary core 130 in the length direction, and the second protrusion 127 defines a port through which the second channel 113 communicates with the second cavity 121, further enhancing the sealing effect of the second gasket 173.

Alternatively, a first return elastic member 162, such as a return spring, is disposed between the stationary core 130 and the first movable core 161, and one end of the first return elastic member 162 may be connected to the stationary core 130 and the other end may be connected to the first movable core 161 and/or the first cushion 164. When the first driving assembly is energized, the first movable core assembly 160 may move toward the stationary core 130 under the electromagnetic force until the first movable core 161 and/or the first buffer pad 164 are maximally close to the stationary core 130. In this process, the first movable core assembly 160 presses the first return elastic member 162 to deform the first return elastic member 162 under pressure, in other words, the first movable core assembly 160 moves in the first accommodating chamber 111 against the elastic force of the first return elastic member 162 under the electromagnetic force until the first movable core 161 and/or the first buffer pad 164 is maximally close to the stationary core 130. When the first driving assembly 141 is powered off, the first reset elastic member 162 pushes the plunger to reset in a direction away from the stationary core 130.

Similarly, a second return elastic member 172, such as a return spring, is disposed between the stationary core 130 and the second movable core 171, and one end of the second return elastic member 172 may be connected to the stationary core 130 and the other end may be connected to the second movable core 171 and/or the second cushion 174. When the second driving assembly 142 is energized, the second movable core assembly 170 moves toward the stationary core 130 under the electromagnetic force until the second movable core 171 and/or the second buffer pad 174 are maximally close to the stationary core 130. In this process, the second moving core assembly 170 presses the second return elastic member 172 to deform the second return elastic member 172 under pressure, in other words, the second moving core assembly 170 moves in the first cavity 111 against the elastic force of the second return elastic member 172 under the electromagnetic force until the second moving core 171 and/or the second buffer pad 174 are maximally close to the stationary core 130. When the second driving assembly 142 is powered off, the second return elastic member 172 pushes the plunger to return toward a direction away from the stationary core 130.

The reset elastic piece and/or the buffer pad can well buffer the collision between the movable iron core assembly and the static iron core 130 after being electrified, so that noise when the electromagnetic valve assembly is opened is reduced, abrasion of the movable iron core and the static iron core 130 is reduced, and the service life is prolonged.

The cushion pad, the seal ring and the gasket may be produced from an elastic material such as rubber.

The solenoid valve module 100 according to a preferred embodiment of the present utility model may further include a noise reducing pad 147, as shown in fig. 1 and 2, provided to a port of the third passage 122 of the second solenoid valve body 120, which communicates with, for example, the atmosphere, for attenuating noise when vibration and gas are exhausted. The noise reducing pad 147 may be made of rubber, plastic, noise reducing cotton, etc.

The solenoid valve module 100 according to a preferred embodiment of the present utility model can realize the functions of inflation, deflation and pressure maintaining, and its working principle is as follows:

inflation state: the second channel 113 communicates with a gas supply device, such as an air pump, and gas is supplied from the second channel 113, the second drive assembly 142 is not energized, and the second plunger assembly 170 is in a second closed position to close the third channel 122, such as in the atmosphere, and the first drive assembly 141 is energized, i.e., switched from de-energized to energized, and the stationary plunger 130 generates a magnetic force to attract the first plunger assembly 160 (preferably without a gap) to move the first plunger assembly 160 from the closed position to the open position to open the second channel 113, and gas is then supplied from the second channel 113 and out of the first channel 112 to a back end device, such as an air bag, to be inflated.

Pressure maintaining state: at this time, the second driving assembly 142 is not energized, the second plunger 171 is in the closed position, and the third passage 122 is in the closed state. The first driving assembly 141 is switched from power on to power off, and the first plunger assembly 160 is reset to the first closed position by the first reset elastic member 162, thereby closing the first passage 112. At this time, the gas cannot be discharged from the rear-end equipment such as the air bag, and the pressure maintaining can be performed on the rear-end equipment such as the air bag.

Exhaust state: the first driving assembly 141 is not energized, and the first plunger assembly 160 is in the first closed position, and the second channel 113 is in the closed state. The second driving assembly 142 is energized, the static iron core 130 generates magnetic force to attract the second movable iron core assembly 170 (preferably without a gap), so as to open the third channel 122, and at this time, the gas flows from the second channel 113 into the first air path of the first cavity 111, flows through the through hole 138 of the static iron core 130 and the second air path of the second cavity 121 in sequence, and then is exhausted from the third channel 122, for example, directly exhausted to the atmosphere.

After the exhaust is completed, the second driving assembly 142 is switched from power on to power off, and the second movable iron core assembly 170 is reset from the second open position to the second closed position under the action of the second reset elastic member 172, thereby closing the third channel 122.

The first passage 112 and the third passage 122 may be exchanged for intake and exhaust functions, for example, the first passage 112 is communicated with the atmosphere to exhaust air and the third passage 122 is communicated with an air supply device such as an air pump to intake air, the operation principle of which can be easily understood by those skilled in the art, and will not be described in detail.

A second aspect of the present utility model provides a pneumatic system comprising the solenoid valve module 100 according to the present novel first aspect of use, a circuit board 400, an air pump and an air bag. The solenoid valve module 100 is assembled to the mounting plane of the circuit board 400. The air pump is configured to communicate with one of the first and third passages 112, 122 of the solenoid valve module 100 to intake air to the solenoid valve module 100, the other of the first and third passages 112, 122 serving to exhaust air to, for example, the atmosphere. The bladder is configured to communicate with the second passage 113 of the solenoid valve module 100 to inflate or deflate the bladder. The pneumatic system may be a pneumatic massage system.

As shown in fig. 15 and 16, the solenoid valve module according to the first aspect of the present utility model is assembled (preferably welded) to the circuit board 400, and in particular, the bottom plane of the solenoid valve module according to the first aspect of the present utility model is assembled (preferably welded) to the circuit board 400.

Fig. 15 shows a solenoid valve module 100 according to a preferred embodiment of the present utility model, in which the first and second magnetism collecting members 180 and 190 are vertically staggered by 90 °, i.e., the second connection portion 193 is located at the left side of the solenoid valve module 100 based on the view of the second solenoid valve body 120 in the length direction toward the first solenoid valve body 110, and the third and fourth arms 191 and 192 extend rightward in the width direction from the second connection portion 193.

Fig. 16 shows a solenoid valve module 200 according to another preferred embodiment of the present utility model, in which the first and second magnetism collecting members 180 and 290 are vertically staggered by 270 °, i.e., the second connection portion 293 is located at the right side of the solenoid valve module 100 based on the view from the second solenoid valve body 120 to the first solenoid valve body 110 in the length direction, and the third and fourth arms 291 and 292 extend leftward in the width direction from the second connection portion 193.

This assembly makes the first solenoid valve body 110 free of magnetism collecting member portions on both sides in the width direction, thereby leaving room for assembly with other components such as solenoid valve, air pump, air bag, etc.

According to the pneumatic system of the present utility model, similar technical effects to those of the solenoid valve module 100 of the first aspect described above can be achieved. The pneumatic system according to the present utility model includes all technical features and effects of the solenoid valve module 100 according to the present utility model.

Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model pertains. The terminology used herein is for the purpose of describing particular implementations only and is not intended to be limiting of the utility model. Terms such as "disposed" or the like as used herein may refer to either one element being directly attached to another element or one element being attached to another element through an intermediate member. Features described herein in one embodiment may be applied to another embodiment alone or in combination with other features unless the features are not applicable or otherwise indicated in the other embodiment.

The present utility model has been described in terms of the above embodiments, but it should be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the utility model to the embodiments described. Those skilled in the art will appreciate that many variations and modifications are possible in light of the teachings of the utility model, which variations and modifications are within the scope of the utility model as claimed.

Claims (10)

1. A solenoid valve module for assembly to a circuit board, the solenoid valve module comprising:

the first electromagnetic valve body is provided with a first containing cavity;

the second electromagnetic valve body is provided with a second containing cavity;

the static iron core is fixedly connected with the first electromagnetic valve body and the second electromagnetic valve body, the first end of the static iron core is at least partially positioned in the first accommodating cavity, and the second end of the static iron core is at least partially positioned in the second accommodating cavity;

a first movable core assembly movably disposed and at least partially within the first cavity;

a second movable core assembly movably disposed and at least partially within the second cavity;

a first magnetism collecting member including a first arm and a second arm mounted to the stationary core;

a second magnetism collecting member configured to be offset from the first magnetism collecting member in a length direction, the second magnetism collecting member including a third arm and a fourth arm, the third arm being mounted to the stationary core;

the first arm, the third arm, the second arm and the fourth arm are sequentially arranged at intervals along the length direction.

2. The electromagnetic valve module according to claim 1, wherein the first magnetism collecting member further includes a first connecting portion configured to be disposed opposite to the mounting plane of the wiring board in the height direction, and the second magnetism collecting member further includes a second connecting portion located at one of both sides of the electromagnetic valve module in the width direction.

3. The solenoid valve module of claim 2, wherein,

the first connecting portion is configured in a plate-like structure and is parallel to the mounting plane;

the second connection portion is configured in a plate-like structure and perpendicular to the mounting plane.

4. A solenoid valve module according to any one of claims 1-3 wherein the stationary core is provided with a first circumferentially extending flange structure in a central portion thereof,

the third arm is configured to cooperate with a face of the first flange structure proximate the first solenoid valve body to axially constrain the stationary core,

the second arm is configured to cooperate with another face of the first flange structure remote from the first solenoid valve body to axially constrain the stationary core.

5. The electromagnetic valve module according to claim 4, wherein the stationary core is provided with a second flange structure and a third flange structure extending in a circumferential direction, the second flange structure and the third flange structure being located on both sides of the first flange structure in the length direction, a radial dimension of the second flange structure and the third flange structure being smaller than a radial dimension of the first flange structure,

the third arm is configured in a U-shaped structure in the width direction and straddles the outer periphery of the second flange structure to form a fit,

the second arm is configured in a U-shaped structure in the width direction and straddles the outer periphery of the third flange structure to form a fit.

6. The solenoid valve module of claim 5, wherein,

a first step hole is formed in one end, facing the second electromagnetic valve body, of the first electromagnetic valve body so as to form fit with the second flange structure;

and one end of the second electromagnetic valve body, which faces the first electromagnetic valve body, is provided with a second step hole so as to be matched with the third flange structure.

7. The solenoid valve module of claim 5, wherein,

the first electromagnetic valve body comprises a first limiting member, and the third arm is positioned between the first limiting member and the first flange structure;

the second solenoid valve body includes a second stop member, and the second arm is located between the second stop member and the first flange structure.

8. The solenoid valve module of claim 7, wherein,

the first solenoid valve body further includes a third stop member configured to be in stop fit with the first arm;

the second solenoid valve body further includes a fourth stop member configured to be in stop engagement with the fourth arm.

9. A solenoid valve module according to any one of claims 1 to 3 wherein,

the first solenoid valve body is provided with a first channel and a second channel, the second solenoid valve body is provided with a third channel, and the second channel is configured to allow the first channel or the third channel to be respectively communicated with.

10. A pneumatic system, comprising:

the electromagnetic valve module according to any one of claims 1-9;

the electromagnetic valve module is assembled to the installation plane of the circuit board;

an air pump configured to communicate with one of the first and third channels of the solenoid valve module; and

an air bladder configured to communicate with the second passage of the solenoid valve module.