Variable pressure solenoid valve

Abstract

The application relates to the technical field of electromagnetic valves and specifically discloses a variable-pressure electromagnetic valve, which has the technical scheme as follows: a plurality of first valve bodies are arranged, the first valve body comprises an air inlet end, an air charging end and an air outlet end, the air charging end is connected with an air bag, the air inlet end is provided with an air inlet assembly, the air outlet end is provided with an air outlet assembly, the first valve body is provided with a moving iron core and an electromagnetic assembly, the air inlet assembly comprises an air inlet seat and an air inlet sealing plug, the air inlet seat is arranged at the air inlet end, the air inlet sealing plug is arranged at the end of the moving iron core facing the air inlet seat, the air outlet assembly comprises a fixed iron core and an air outlet sealing plug, the fixed iron core is arranged at the air outlet end, and the air outlet sealing plug is arranged at the end of the moving iron core facing the fixed iron core; the second valve body is provided with a plurality of air inlet openings, and the second valve body is provided with a first sealing ring. The massage instrument can massage different parts of the human body, thereby improving the applicability of the massage instrument.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electromagnetic valves, and particularly relates to a variable pressure electromagnetic valve. BACKGROUND

[0002] With the rapid development of science and technology, people's requirements for living standards are getting higher and higher, so various massage instruments have emerged, such as portable massage instruments, massage seats of new energy vehicles, etc.

[0003] In the related art, a massage instrument generally has a plurality of massage air bags, and the massage instrument usually realizes the massage function on the human body by controlling the inflation and deflation operation of the massage air bags. The massage instrument usually uses an electromagnetic valve to control the inflation and deflation. Generally, the electromagnetic valve includes a valve body, a valve core, a spring and an electromagnetic assembly. The electromagnetic valve limits the valve core in the valve body by the spring, and drives the valve core to move in the valve body by the electromagnetic assembly, so as to realize the opening and closing of the air inlet and the air outlet in the electromagnetic valve.

[0004] In the related art, the inventor believes that a plurality of air bags are installed in the massage instrument by the electromagnetic valve. When the massage instrument inflates the air bags, the pressure to the plurality of air bags is the same because the electromagnetic valves are installed in the same air duct, so that the pressing force of the plurality of air bags on the human body is the same. However, the stress on different parts of the human body is different, such as the eye and the waist, so that the use of the massage instrument has limitations. SUMMARY

[0005] In order to enable the massage instrument to massage different parts of the human body, thereby improving the applicability of the massage instrument, the present application provides a variable pressure electromagnetic valve.

[0006] The variable pressure electromagnetic valve provided by the present application adopts the following technical scheme:

[0007] A variable pressure electromagnetic valve, comprising:

[0008] The first valve body is provided with a plurality of first valve bodies, each of which comprises an air inlet end, an air charging end and an air outlet end, the air charging end is communicated with an air bag, the air inlet end is provided with an air inlet assembly for controlling the air inlet of the first valve body, the air outlet end is provided with an air outlet assembly for controlling the air outlet of the first valve body, the first valve body is provided with a moving iron core and an electromagnetic assembly for driving the moving iron core to move between the air inlet end and the air outlet end, the air inlet assembly comprises an air inlet seat fixedly arranged at the air inlet end and an air inlet sealing plug arranged at the end of the moving iron core towards the air inlet seat for opening and closing the air inlet end, the air outlet assembly comprises a fixed iron core fixedly arranged at the air outlet end and an air outlet sealing plug arranged at the end of the moving iron core towards the fixed iron core for opening and closing the air outlet end, when the electromagnetic assembly is energized, the air outlet sealing plug moves to a position abutting against the fixed iron core, when the electromagnetic assembly is de-energized, the air inlet sealing plug moves to a position abutting against the air inlet seat;

[0009] The second valve body is provided with a plurality of air inlet openings for connecting the air inlet ends of the first valve bodies, and the second valve body is provided with a first sealing ring for opening and closing the air inlet openings.

[0010] By adopting the above technical scheme, the first valve body is connected to the air inlet opening through the air inlet end to realize the connection of a plurality of first valve bodies in the second valve body, when the second valve body is ventilated, the first sealing ring opens the air inlet opening, so that the air can enter the air inlet end of the first valve body, when the electromagnetic assembly is energized, the electromagnetic assembly drives the moving iron core to move towards the fixed iron core through electromagnetic induction, so that the air outlet sealing plug closes the air outlet end, at the same time, the air inlet sealing plug moves away from the air inlet seat, so that the air inlet sealing plug opens the air inlet end, the air entering the air inlet end enters the air bag through the air charging end to charge the air bag; when the electromagnetic assembly is de-energized, the moving iron core moves from the position of closing the air outlet end of the air outlet sealing plug towards the air inlet seat, the air outlet sealing plug moves away from the fixed iron core to open the air outlet end, the air in the air bag is discharged through the air outlet end, the air pressures in a plurality of air bags are different to change the flexibility of the air bags, the flexibility of each air bag is controlled independently by the electromagnetic assembly of the first valve body connected thereto without interference, so that the massage instrument can massage different parts of the human body, thereby improving the applicability of the massage instrument.

[0011] Preferably, the first sealing ring comprises a fixed ring, a sealing block and a connecting rod, the fixed ring is arranged around the periphery of the air inlet opening, one end of the connecting rod is fixedly connected with the inner side wall of the fixed ring, the other end of the connecting rod is fixedly connected with the sealing block, and the sealing block is opened and closed to abut against the air inlet opening.

[0012] By adopting the technical scheme, the connecting rods connect the sealing blocks to the fixing ring, and the sealing blocks can be flipped up and down in the fixing ring through the connecting rods, when the second valve body is ventilated, the air pressure in the second valve body is greater than that of the air inlet end in the first valve body, and the pressure difference pushes the sealing blocks away from the air inlet, so that the air inlet operation of the air inlet end of the first valve body is realized, when the air bag needs to be exhausted, the second valve body is not ventilated, the air pressure in the first valve body is greater than that in the second valve body, and the pressure difference pushes the sealing blocks to abut against the air inlet, so that the closing of the air inlet is realized, and the gas in the air bag can only be exhausted through the exhaust end, and the movement of the moving iron core controlled by the electromagnetic assembly can control the exhaust amount of the exhaust end, so as to control the flexibility of the air bag, thereby improving the applicability of the massage instrument.

[0013] Preferably, the number of the connecting rods is two, and the two connecting rods are arranged at intervals on the same side of the sealing block.

[0014] By adopting the technical scheme, the number of the connecting rods is two, which is beneficial to improve the stability of the sealing block when it is flipped, when the air pressure in the first valve body is greater than that in the second valve body, the pressure difference pushes the sealing block to abut against the air inlet, which is beneficial to the alignment of the sealing block to the air inlet, thereby improving the airtightness of the sealing block to the air inlet.

[0015] Preferably, the air inlet seat is provided with an air inlet hole, a first connecting hole is formed in the hole wall of the air inlet hole, a limiting block is arranged on the end of the air inlet seat facing the first sealing ring, a second connecting hole is formed in the limiting block, and the first connecting hole and the second connecting hole are in communication.

[0016] By adopting the technical scheme, the air inlet seat realizes the communication between the air inlet end and the inflation end through the air inlet hole, and the limiting block separates the sealing block from the air inlet hole, which is beneficial to prevent the air inlet hole from being blocked when the sealing block opens the air inlet, when the sealing block opens the air inlet, the limiting block abuts against the sealing block, and the gas enters the air inlet hole through the air inlet, the second connecting hole and the first connecting hole in sequence, so as to facilitate the air inlet operation of the gas in the air inlet end.

[0017] Preferably, the first connecting hole is arranged in an expanding manner, and the hole diameter of the first connecting hole gradually increases towards the first sealing ring.

[0018] By adopting the technical scheme, this arrangement is beneficial to improve the rate of gas entering the air inlet through the air inlet hole, and is beneficial to reduce the weight of the air inlet seat.

[0019] Preferably, the electromagnetic assembly includes one electromagnetic coil and two electromagnets, the electromagnetic coil is fixedly sleeved on the first valve body, the two electromagnets are arranged on the opposite sides of the first valve body, and the electromagnetic coil is electrically connected with the power supply.

[0020] By adopting the technical scheme, when the electromagnetic coil is electrified, the electromagnetic coil drives the moving iron core to move towards the fixed iron core under the electromagnetic induction of the two electromagnets, so that the exhaust sealing plug seals the exhaust end, and at the same time, the intake sealing plug moves away from the intake seat, so that the intake sealing plug opens the intake end, and the gas can enter the intake end through the intake hole, and the gas in the intake end enters the air bag through the inflation end to inflate the air bag, thereby achieving the inflation control of the air bag.

[0021] Preferably, the exhaust assembly further comprises a spring for abutting the end of the moving iron core towards the end of the intake seat against the intake seat, the spring is sleeved on the end of the moving iron core towards the fixed iron core, one end of the spring is fixedly connected with the moving iron core, and the other end of the spring is fixedly connected with the fixed iron core.

[0022] By adopting the technical scheme, when the electromagnetic coil is not electrified, the spring abuts the moving iron core against the intake seat, and the intake sealing plug blocks the intake hole, thereby achieving the sealing of the intake end, when the electromagnetic coil is electrified, the electromagnetic assembly drives the moving iron core to move towards the fixed iron core under electromagnetic induction, the spring is compressed under force, and the intake sealing plug moves away from the intake hole, thereby achieving the opening of the intake end, which is convenient for the gas to enter the first valve body, when the electromagnetic coil is de-energized, the restoring force of the spring drives the moving iron core to move close to the intake seat, and the intake sealing plug blocks the intake hole again, thereby achieving the opening and closing operation of the intake end.

[0023] Preferably, the outer side wall of the fixed iron core is sleeved with a second sealing ring, and the second sealing ring is annularly abutted against the first valve body.

[0024] By adopting the technical scheme, the second sealing ring is beneficial to improve the sealing performance of the exhaust end.

[0025] Preferably, the intake seat is sleeved with a third sealing ring, and the third sealing ring is annularly abutted against the first valve body.

[0026] By adopting the technical scheme, the third sealing ring is beneficial to improve the sealing performance of the intake end.

[0027] Preferably, the fixed iron core is provided with an exhaust hole, the edge of the exhaust hole extends towards the direction close to the exhaust sealing plug to form a convex ring, and the cross-sectional area of the exhaust sealing plug is greater than the area formed by the convex ring.

[0028] By adopting the technical scheme, the exhaust hole performs the exhaust operation on the gas, when the exhaust sealing plug abuts against the fixed iron core, the exhaust sealing plug abuts against the convex ring to block the exhaust hole, and the sealing performance of the exhaust end is improved.

[0029] In summary, the present application has at least one of the following beneficial technical effects:

[0030] 1. By setting several first valve bodies on the second valve body, the air pressure in each air bag is controlled individually by the electromagnetic assembly connected thereto without interference, so that the pressing force of several air bags on the human body is different, and the flexibility of the air bag is controllable, so that the massage instrument can massage different parts of the human body, thereby improving the applicability of the massage instrument.

[0031] 2. The first sealing ring comprises a fixed ring, a sealing block and a connecting rod, the connecting rod connects the sealing ring at the middle position of the fixed ring, and the sealing block can be turned up and down in the fixed ring through the connecting rod, when the second valve body is ventilated, the air pressure in the second valve body is greater than that in the air inlet end of the first valve body, the pressure difference pushes the sealing block away from the air inlet, realizing the air inlet operation of the air inlet end of the first valve body, when the air bag needs to be exhausted, the second valve body is not ventilated, the air pressure in the first valve body is greater than that in the second valve body, the pressure difference pushes the sealing block against the air inlet, realizing the closure of the air inlet, the gas in the air bag can only be discharged through the exhaust end, the movement of the moving iron core controlled by the electromagnetic assembly can control the exhaust amount of the exhaust end, so as to control the flexibility of the air bag, thereby improving the applicability of the massage instrument.

[0032] 3. By setting a limiting block at the end of the air inlet seat facing the first sealing ring, the limiting block separates the sealing block from the air inlet hole, which is helpful to prevent the sealing block from blocking the air inlet hole when it is turned to open the air inlet. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 is the overall structure schematic diagram of the variable pressure electromagnetic valve of the embodiment of the present application.

[0034] Figure 2 is the sectional view of the variable pressure electromagnetic valve of the embodiment of the present application.

[0035] Figure 3 is the structure schematic diagram of the first sealing ring of the embodiment of the present application.

[0036] Figure 4 is Figure 2 is the enlarged view of A part in FIG.

[0037] Figure 5 is Figure 2 is the enlarged view of B part in FIG.

[0038] BRIEF DESCRIPTION OF DRAWINGS

[0039] 1, the first valve body; 11, the air inlet end; 12, the inflation end; 13, the air outlet end; 2, the air inlet assembly; 21, the air inlet seat; 22, the air inlet sealing plug; 3, the air outlet assembly; 31, the fixed core; 32, the air outlet sealing plug; 33, the spring; 4, the moving core; 5, the electromagnetic assembly; 51, the electromagnetic coil; 52, the electromagnet; 6, the second valve body; 7, the air inlet; 8, the first sealing ring; 81, the fixed ring; 82, the sealing block; 83, the connecting rod; 9, the air inlet hole; 10, the first connecting hole; 14, the limiting block; 15, the second connecting hole; 16, the second sealing ring; 17, the third sealing ring; 18, the air outlet hole; 19, the convex ring; 20, the first accommodating groove; 23, the second accommodating groove. DETAILED DESCRIPTION

[0040] The following description will be made in conjunction with the accompanying drawings. Figures 1-5 The application is further described in detail.

[0041] The embodiment of the application discloses a variable pressure electromagnetic valve, which is used for controlling air pressure in a massage instrument. Figure 1 and Figure 2 The variable pressure electromagnetic valve comprises a first valve body 1 and a second valve body 6, the second valve body 6 is in the form of a pipe, the second valve body 6 is in communication with an air pipe in the massage instrument, and a plurality of air inlets 7 for fixing and connecting the first valve body 1 are arranged on the side wall of the second valve body 6. In the embodiment, the number of the air inlets 7 is four, the four air inlets 7 are uniformly and interval arranged along the length direction of the second valve body 6, and the number of the first valve body 1 is four, the four second valve bodies 6 are arranged side by side along the length direction of the first valve body 1.

[0042] Referring to Figure 1 and Figure 2 Each first valve body 1 comprises an air inlet end 11, an inflation end 12 and an air outlet end 13, the air inlet end 11 is used for controlling the air inlet operation of the first valve body 1, the air outlet end 13 is used for controlling the air outlet operation of the first valve body 1, and the inflation end 12 is used for the inflation operation of an air bag in the massage instrument. The air inlet end 11 and the air outlet end 13 are arranged at two end portions of the first valve body 1, the first valve body 1 is connected with the second valve body 6 by aligning the air inlet end 11 with the air inlet 7, the inflation end 12 is located on the side wall of the first valve body 1, the inflation end 12 is in communication with the air bag, and the four inflation ends 12 are connected with four air bags.

[0043] Referring to Figure 2 and Figure 3The second valve body 6 is provided with a first sealing ring 8 for opening and closing the air inlet 7. Specifically, the first sealing ring 8 is made of soft rubber, and the first sealing ring 8 comprises a fixed ring 81, a sealing block 82 and a connecting rod 83. The fixed ring 81 is annular and concentrically arranged on the side of the air inlet 7. One end of the connecting rod 83 is fixedly connected to the inner side wall of the fixed ring 81, and the other end of the connecting rod 83 is fixedly connected to the side wall of the sealing block 82. The cross section of the sealing block 82 is circular. The sealing block 82 is concentrically arranged on the inner side of the fixed ring 81. The sealing block 82 is opened and closed to the air inlet 7. The surface of the sealing block 82 towards the air inlet 7 has a diameter larger than that of the air inlet 7. When the second valve body 6 is not ventilated, the air pressure in the second valve body 6 is the same as that in the first valve body 1. The sealing block 82 is abutted to the air inlet 7 under the connection of the connecting rod 83, so that the air inlet 7 is closed. When the second valve body 6 is ventilated, the air pressure in the second valve body 6 is greater than that in the first valve body 1. The pressure difference makes the sealing block 82 turn away from the air inlet 7, so that the air inlet 7 is opened, thereby realizing the opening and closing operation of the air inlet 7. It is worth mentioning that the number of connecting rods 83 is two, and the two connecting rods 83 are arranged on the same side of the sealing block 82 in a spaced manner, so as to improve the stability of the sealing block 82 when moving under the action of the pressure difference, and to improve the stability of the position of the sealing block 82 when closing the air inlet 7.

[0044] With reference to Figure 1 and Figure 2 , the air inlet end 11 is provided with an air inlet assembly 2 for controlling the gas entering the first valve body 1, and the air outlet end 13 is provided with an air outlet assembly 3 for controlling the gas exiting the first valve body 1. Meanwhile, the first valve body 1 is provided with a moving iron core 4 and an electromagnetic assembly 5 for driving the moving iron core 4 to move between the air inlet end 11 and the air outlet end 13, so as to realize the air pressure control in the air bag.

[0045] With reference to Figure 1 and Figure 2 , the electromagnetic assembly 5 in each first valve body 1 comprises one electromagnetic coil 51 and two electromagnets 52. The electromagnetic coil 51 is fixedly sleeved on the first valve body 1, and the two electromagnets 52 are arranged on opposite sides of the first valve body 1. The electromagnetic coil 51 is electrically connected to the power supply. When the electromagnetic coil 51 is not powered, the moving iron core 4 is in the initial position in the first valve body 1. It should be noted that the initial position of the moving iron core 4 is the position where the moving iron core 4 is close to the air inlet end 11 to close the air inlet end 11. When the electromagnetic coil 51 is powered, the moving iron core 4 moves in the electromagnetic field generated by electromagnetic induction to close the air outlet end 13, and moves away from the air inlet end 11 to open the air inlet end 11.

[0046] With reference to Figure 2 and Figure 4, the air inlet assembly 2 comprises an air inlet seat 21 and an air inlet sealing plug 22, specifically, the air inlet seat 21 is fixedly arranged at the air inlet end 11, a middle position of the air inlet seat 21 is provided with an air inlet hole 9 along the length direction of the first valve body 1, and the air inlet sealing plug 22 is fixedly arranged at the end of the moving iron core 4 facing the air inlet seat 21, and the air inlet sealing plug 22 opens and closes the air inlet end 11 by opening and closing the air inlet hole 9.

[0047] With reference to Figure 2 and Figure 4 , the hole wall of the air inlet hole 9 is uniformly and circumferentially provided with four first connecting holes 10, the end of the air inlet seat 21 facing the first sealing ring 8 is fixedly provided with a limiting block 14, the limiting block 14 is provided with four second connecting holes 15 at positions corresponding to the four first connecting holes 10, so that the limiting block 14 is arranged in a cross shape, and the first connecting holes 10 and the second connecting holes 15 are in communication, when the sealing block 82 opens the air inlet hole 7, the limiting block 14 is located between the air inlet hole 7 and the first sealing ring 8 to prevent the sealing block 82 from blocking the air inlet hole 9. It is worth mentioning that the first connecting hole 10 is arranged in an expanded shape, the hole diameter of the first connecting hole 10 gradually increases towards the first sealing ring 8, so as to improve the rate of gas entering the first valve body 1 through the air inlet hole 9, and is conducive to reducing the weight of the air inlet seat 21, meeting the requirements of lightweight design of the electromagnetic valve.

[0048] With reference to Figure 2 and Figure 5The exhaust assembly 3 comprises a fixed core 31 fixedly arranged at the exhaust end 13, and an exhaust sealing plug 32 arranged at the end of the moving core 4 facing the fixed core 31 to open and close the exhaust end 13 by opening and closing the exhaust hole 18. When the electromagnetic coil 51 is energized, the exhaust sealing plug 32 is driven by the moving core 4 to abut against the fixed core 31 to close the exhaust hole 18, so as to close the exhaust end 13. In addition, the exhaust assembly 3 further comprises a spring 33 for abutting the air inlet sealing plug 22 against the air inlet seat 21 to reset the moving core 4. Specifically, the spring 33 is sleeved on the end of the moving core 4 facing the fixed core 31 along the length direction of the first valve body 1, one end of the spring 33 is fixedly connected with the moving core 4, and the other end of the spring 33 is fixedly connected with the fixed core 31. The spring 33 is in a compressed state in the first valve body 1, when the electromagnetic coil 51 is not energized, the moving core 4 is driven by the elastic force of the spring 33 to move towards the air inlet seat 21, so that the air inlet sealing plug 22 abuts against the air inlet seat 21, and the air inlet sealing plug 22 closes the air inlet hole 9. When the electromagnetic coil 51 is energized, the moving core 4 is subjected to a pulling force in the direction of the fixed core 31 in the electromagnetic field generated by electromagnetic induction, and the pulling force is greater than the elastic force of the spring 33, so that the moving core 4 moves towards the fixed core 31, so that the exhaust sealing plug 32 abuts against the fixed core 31, and the exhaust sealing plug 32 closes the exhaust hole 18. It should be noted that the end surface of the fixed core 31 facing the moving core 4 is fixedly provided with a convex ring 19 located at the edge of the exhaust hole 18, the convex ring 19 is formed by extending the edge of the exhaust hole 18 towards the exhaust sealing plug 32, and the cross-sectional area of the exhaust sealing plug 32 is greater than the area surrounded by the convex ring 19. When the exhaust sealing plug 32 abuts against the convex ring 19, the position where the exhaust sealing plug 32 abuts against the convex ring 19 is recessed to cover the exhaust hole 18, which is beneficial to improve the sealing performance of the exhaust end 13 when closed.

[0049] Referring to Figure 4 and Figure 5The fixed iron core 31 is fixedly arranged in the exhaust end 13 of the first valve body 1, and the outer side wall of the fixed iron core 31 abuts against the inner side wall of the first valve body 1. In order to improve the sealing performance of the exhaust end 13 of the first valve body 1, the outer side wall of the fixed iron core 31 is fixedly sleeved with a second sealing ring 16. The outer side wall of the fixed iron core 31 is correspondingly provided with a first accommodating groove 20 for accommodating the second sealing ring 16. The first accommodating groove 20 is annularly arranged on the outer side wall of the fixed iron core 31 and is connected at the head and tail. The second sealing ring 16 is accommodated in the first accommodating groove 20 and annularly abuts against the inner side wall of the first valve body 1. Similarly, the air inlet seat 21 is fixedly sleeved on the air inlet end 11 of the first valve body 1, and the inner side wall of the air inlet seat 21 abuts against the outer side wall of the first valve body 1. The inner side wall of the air inlet seat 21 is embedded with a third sealing ring 17. The inner side wall of the air inlet seat 21 is correspondingly provided with a second accommodating groove 23 for accommodating the third sealing ring 17. The second accommodating groove 23 is annularly arranged on the inner side wall of the air inlet seat 21 and is connected at the head and tail. The third sealing ring 17 is accommodated in the second accommodating groove 23 and annularly abuts against the outer side wall of the first valve body 1, so as to improve the sealing performance of the air inlet end 11 of the first valve body 1.

[0050] The implementation principle of the variable pressure electromagnetic valve according to an embodiment of the application is as follows: when the electromagnetic coil 51 is not powered, the elastic force of the spring 33 pushes the moving iron core 4 to move towards the air inlet end 11, so that the air inlet sealing plug 22 abuts against the air inlet seat 21, the air inlet sealing plug 22 closes the air inlet hole 9, the second valve body 6 is ventilated so that the air pressure in the second valve body 6 is greater than the air pressure in the first valve body 1, and the pressure difference pushes the sealing block 82 away, and the gas enters the air inlet hole 9 through the air inlet 7; when it is needed to inflate the air bag, the electromagnetic coil 51 is powered, the moving iron core 4 is subjected to a pulling force in the direction of the fixed iron core 31 in the electromagnetic field generated by electromagnetic induction, and the pulling force is greater than the elastic force of the spring 33, so that the moving iron core 4 moves towards the fixed iron core 31, so that the exhaust sealing plug 32 abuts against the fixed iron core 31, and the exhaust sealing plug 32 closes the exhaust hole 18; at this time, the air inlet sealing plug 22 is away from the air inlet seat 21, the air inlet hole 9 is opened, the gas is ventilated into the first valve body 1, and the gas is ventilated into the air bag through the inflation end 12 to inflate the air bag; when it is needed to deflate the air bag, the second valve body 6 is not ventilated, the air pressure in the first valve body 1 is greater than the air pressure in the second valve body 6, the pressure difference pushes the sealing block 82, so that the sealing block 82 abuts against the air inlet 7, the air inlet 7 is closed, so that the gas in the air bag and the first valve body 1 cannot flow to the second valve body 6 through the air inlet 7, and then the first sealing ring 8 realizes one-way flow of the gas in the air inlet 7; then the electromagnetic coil 51 is powered off, the elastic force of the spring 33 pushes the moving iron core 4 to abut against the air inlet seat 21 at the air inlet end 11, the air inlet sealing plug 22 blocks the air inlet hole 9, and at the same time, the exhaust sealing plug 32 is away from the fixed iron core 31, the exhaust hole 18 is opened, and the gas in the air bag is exhausted through the exhaust hole 18; the air content in the air bag can be flexibly controlled by controlling the ventilation of the second valve body 6 and the power-on and power-off of the electromagnetic coil 51, so that the flexibility of the air bag can be flexibly controlled, the flexibility of each air bag is controlled independently by the electromagnetic assembly 5 connected to the first valve body 1, and does not interfere with each other, so that the massage instrument can massage different parts of the human body, thereby improving the applicability of the massage instrument.

[0051] The above are preferred embodiments of the application, and do not limit the protection scope of the application, therefore: any equivalent changes made on the structure, shape, principle of the application should be covered within the protection scope of the application.

Claims

1. A variable-pressure solenoid valve, characterized in that, include: The first valve body (1) is provided in a plurality of units. Each first valve body (1) includes an air inlet (11), an inflation end (12), and an exhaust end (13). The inflation end (12) is connected to the airbag. The air inlet (11) is provided with an air inlet assembly (2) for controlling the gas entering the first valve body (1). The exhaust end (13) is provided with an exhaust assembly (3) for controlling the gas exiting the first valve body (1). The first valve body (1) is provided with a moving iron core (4) and an electromagnetic assembly (5) for driving the moving iron core (4) to move between the air inlet (11) and the exhaust end (13). The air inlet assembly (2) includes an air inlet seat (21) and an air inlet sealing plug (22). 21) Fixedly installed at the air inlet end (11), the air inlet sealing plug (22) is installed at the end of the moving iron core (4) facing the air inlet seat (21) for opening and closing the air inlet end (11), the exhaust assembly (3) includes a fixed iron core (31) and an exhaust sealing plug (32), the fixed iron core (31) is fixedly installed at the exhaust end (13), the exhaust sealing plug (32) is installed at the end of the moving iron core (4) facing the fixed iron core (31) for opening and closing the exhaust end (13), when the electromagnetic assembly (5) is energized, the exhaust sealing plug (32) moves to a position abutting against the fixed iron core (31), when the electromagnetic assembly (5) is de-energized, the air inlet sealing plug (22) moves to a position abutting against the air inlet seat (21); The second valve body (6) has a plurality of air inlets (7) for connecting to the air inlet end (11) of the first valve body (1), and the second valve body (6) is provided with a first sealing ring (8) for opening and closing the air inlets (7). The first sealing ring (8) includes a fixing ring (81), a sealing block (82), and a connecting rod (83). The fixing ring (81) is arranged around the periphery of the air inlet (7). One end of the connecting rod (83) is fixedly connected to the inner wall of the fixing ring (81), and the other end of the connecting rod (83) is fixedly connected to the sealing block (82). The sealing block (82) opens and closes against the air inlet (7). The number of the connecting rods (83) is set to two, and the two connecting rods (83) are located on the same side of the sealing block (82) and are spaced apart; The air intake seat (21) has an air intake hole (9), and the wall of the air intake hole (9) has a first connecting hole (10). The end of the air intake seat (21) facing the first sealing ring (8) is provided with a limiting block (14), and the limiting block (14) has a second connecting hole (15). The first connecting hole (10) and the second connecting hole (15) are connected.

2. The variable pressure solenoid valve according to claim 1, characterized in that: The first connecting hole (10) is flared, and the diameter of the first connecting hole (10) gradually increases in the direction close to the first sealing ring (8).

3. The variable pressure solenoid valve according to claim 1, characterized in that: The electromagnetic component (5) includes an electromagnetic coil (51) and two electromagnets (52). The electromagnetic coil (51) is fixedly sleeved on the first valve body (1), and the two electromagnets (52) are respectively disposed on opposite sides of the first valve body (1). The electromagnetic coil (51) is electrically connected to the power supply.

4. A variable pressure solenoid valve according to claim 1, characterized in that: The exhaust assembly (3) further includes a spring (33) for pressing the end of the moving iron core (4) facing the air intake seat (21) against the air intake seat (21). The spring (33) is sleeved on the end of the moving iron core (4) facing the fixed iron core (31). One end of the spring (33) is fixedly connected to the moving iron core (4), and the other end of the spring (33) is fixedly connected to the fixed iron core (31).

5. A variable pressure solenoid valve according to claim 1, characterized in that: The outer wall of the fixed iron core (31) is fitted with a second sealing ring (16), which surrounds and abuts against the first valve body (1).

6. A variable pressure solenoid valve according to claim 1, characterized in that: The air intake seat (21) is fitted with a third sealing ring (17), which surrounds and abuts against the first valve body (1).

7. A variable pressure solenoid valve according to claim 1, characterized in that: The fixed iron core (31) has an exhaust hole (18), and the edge of the exhaust hole (18) extends toward the exhaust sealing plug (32) to form a convex ring (19). The cross-sectional area of ​​the exhaust sealing plug (32) is larger than the area enclosed by the convex ring (19).

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