Air valve and massage device
By driving the internal moving components of the air valve by memory wire, the problem of large solenoid valve size is solved, and the air valve is miniaturized and low noise is achieved, which is suitable for a wider range of application scenarios.
Patent Information
- Application Number
- CN202411577059.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-06
- Publication Date
- 2025-01-10
AI Technical Summary
Among the existing airbag massage equipment, the solenoid valve is large in size and takes up a lot of space, which is not suitable for miniaturization applications.
The memory wire is used to drive the internal moving components of the valve body. Through the memory wire, the moving components and the reset parts in the chamber, the opening and closing of the airbag connecting pipe and the outlet pipe are electrically controlled to achieve changes in the gas flow direction.
It realizes the volume reduction, weight reduction, and noise reduction of the air valve, which is suitable for a wider range of applications and reduces the accuracy requirements for the main power system.
Smart Images
Figure CN119289128A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of massage equipment, and in particular to an air valve and a massage device. Background Art
[0002] Airbag massage is a method of inflating an airbag through an air pump, and then providing strong massage and relaxation at specific parts through a built-in massage device. Airbag massage is now commonly used in car seats, home massage sofas, massage chairs, etc. to relieve users' muscle fatigue and stress.
[0003] The on-off control of the air path of the air bag requires the use of an air valve. In the prior art, a solenoid valve is generally used to control the air bag. However, the solenoid valve is large in size and requires a large space, which is not conducive to the miniaturization of the massage device. Summary of the invention
[0004] The purpose of the present application is to provide an air valve and a massage device, which can change the flow direction of gas and have a smaller volume, in response to the deficiencies in the above-mentioned prior art.
[0005] To achieve the above purpose, the technical solution adopted in the embodiment of the present application is as follows:
[0006] On the one hand, an embodiment of the present application provides an air valve, including: a valve body, an air bag connecting tube, an air inlet pipe and an air outlet pipe arranged on the valve body, a chamber is arranged in the valve body, and the air bag connecting tube, the air inlet pipe and the air outlet pipe are respectively connected to the chamber; a memory wire, a moving component and a reset component are arranged in the chamber, the two ends of the memory wire are respectively electrically connected to an external trigger circuit, and the middle part is connected to the moving component, one end of the reset component abuts against the valve body, and the other end abuts against the moving component; the memory wire contracts after being energized, pulling the moving component to move in a first direction, so as to open the air inlet pipe and close the air outlet pipe, and causing the reset component to deform and store energy; the memory wire recovers after being powered off, and the reset component releases energy to drive the moving component to move in a second direction opposite to the first direction, so as to close the air inlet pipe and open the air outlet pipe.
[0007] Optionally, a bracket is provided in the chamber, and the movable assembly includes a slider and a movable part fixedly connected to the slider, the slider is set on the bracket for sliding along a first direction, the middle part of the memory metal wire is connected to the slider, the first side surface of the movable part can close the air inlet pipe, and the second side surface opposite to the first side surface can close the air outlet pipe.
[0008] Optionally, a first soft sealing pad is provided on the first side surface, and the first soft sealing pad corresponds to the pipe opening of the air inlet pipe. A second soft sealing pad is provided on the second side surface, and the second soft sealing pad corresponds to the pipe opening of the air outlet pipe.
[0009] Optionally, the moving part cover is arranged on the bracket, the slider and the memory wire.
[0010] Optionally, a first slide groove is provided on the bracket, the middle part of the slider is placed in the first slide groove, two opposite inner walls of the movable member are respectively provided with card grooves, and the two ends of the slider perpendicular to the first direction are respectively inserted into the two card grooves.
[0011] Optionally, a mounting groove is provided at the bottom of the first sliding groove, and the reset member is located in the mounting groove, with one end of the reset member abutting against the bottom of the mounting groove and the other end abutting against the sliding block.
[0012] Optionally, a slide rail is provided on the movable member, a second slide groove cooperating with the slide rail is provided inside the valve body, the second slide groove extends along the first direction, and the movable member slides along the second slide groove in the valve body.
[0013] Optionally, the valve body includes an upper valve body and a bottom plate connected to the upper valve body, the chamber is located in the upper valve body, the chamber forms a chamber opening on the surface of the upper valve body, and the bottom plate seals the chamber opening; a metal welding plate is provided on the bottom plate, the metal welding plate is used to connect to an external trigger circuit, the metal welding plate passes through the bottom plate, a metal clamp is provided on the metal welding plate, and the end of the memory metal wire is fixed on the metal clamp.
[0014] Optionally, a step surface is provided in the air outlet pipe, and the reset member is located in the air outlet pipe, with one end of the reset member abutting against the step surface and the other end abutting against the moving component.
[0015] Another aspect of an embodiment of the present application provides a massage device, comprising an airbag, an air pump and an air valve as described above, wherein the airbag is connected to an airbag connecting port of the air valve, and the air pump is connected to an air inlet of the air valve.
[0016] The beneficial effects of this application include:
[0017] The present application provides a gas valve, comprising: a valve body, an airbag connecting pipe, an air inlet pipe and an air outlet pipe arranged on the valve body, a chamber is arranged in the valve body, and the airbag connecting pipe, the air inlet pipe and the air outlet pipe are respectively connected to the chamber; a memory wire, a moving component and a reset component are arranged in the chamber, the two ends of the memory wire are respectively electrically connected to the external trigger circuit, and the middle part is connected to the moving component, one end of the reset component abuts against the valve body, and the other end abuts against the moving component; the memory wire contracts after being energized, and pulls the moving component to move in a first direction to open the air inlet pipe and close the air outlet pipe, and causes the reset component to deform and store energy; the memory wire recovers after being powered off, and the reset component releases energy to drive the moving component to move in a second direction opposite to the first direction to close the air inlet pipe and open the air outlet pipe. The gas valve uses the memory wire to drive the movement of the moving component inside the valve body, so as to achieve the effect of changing the gas flow direction by sealing the gas port. The memory wire is light in weight and occupies a small space, which effectively reduces the weight of the gas valve and the volume of the valve body, and there is no metal collision sound during operation, which reduces the noise. According to calculation, the overall power supply voltage of the above-mentioned gas valve is about 3V. Therefore, the application range is wider and the requirements for the accuracy of the main power supply system are lower. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.
[0019] Figure 1 A schematic diagram of the structure of the gas valve provided in the embodiment of the present application;
[0020] Figure 2 One of the cross-sectional views of the gas valve provided in the embodiment of the present application;
[0021] Figure 3 A schematic diagram of the gas flow direction of the gas valve provided in an embodiment of the present application when the memory metal wire is energized;
[0022] Figure 4 A schematic diagram of gas flow direction of the gas valve provided in an embodiment of the present application when the memory wire is powered off;
[0023] Figure 5 A schematic diagram of a partial structure of a gas valve provided in an embodiment of the present application;
[0024] Figure 6 This is the second cross-sectional view of the gas valve provided in the embodiment of the present application.
[0025] Icons: 10-air valve; 11-valve body; 111-chamber; 112-upper valve body; 113-bottom plate; 12-airbag connecting pipe; 13-inlet pipe; 14-outlet pipe; 141-rubber sealing ring; 142-step surface; 15-memory metal wire; 16-moving assembly; 161-slider; 162-moving part; 1621-first side; 1622-second side; 1623-slot; 1624-slide rail; 163-first soft sealing pad; 164-second soft sealing pad; 17-reset part; 18-bracket; 181-first slide groove; 182-installation groove; 191-metal welding plate; 192-metal clip; X1-first direction; X2-second direction. DETAILED DESCRIPTION
[0026] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.
[0027] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. It should be noted that, in the absence of conflict, the various features in the embodiments of the present application can be combined with each other, and the combined embodiments are still within the scope of protection of the present application.
[0028] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0029] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.
[0030] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0031] In one aspect of the embodiment of the present application, please refer to Figure 1 and Figure 2, a gas valve 10 is provided, comprising: a valve body 11, an air bag connecting pipe 12, an air inlet pipe 13 and an air outlet pipe 14 arranged on the valve body 11, a chamber 111 is arranged in the valve body 11, the air bag connecting pipe 12, the air inlet pipe 13 and the air outlet pipe 14 are respectively communicated with the chamber 111; a memory metal wire 15, a moving component 16 and a reset member 17 are arranged in the chamber 111, the two ends of the memory metal wire 15 are respectively electrically connected to the external trigger circuit, the middle part is connected to the moving component 16, and the memory metal wire 15 is electrically connected to the moving component 16. One end of the positioning member 17 abuts against the valve body 11, and the other end abuts against the moving component 16; the memory wire 15 contracts after being energized, pulling the moving component 16 to move along the first direction X1, so as to open the air inlet pipe 13 and close the air outlet pipe 14, and cause the reset member 17 to deform and store energy; the memory wire 15 recovers after being de-energized, and the reset member 17 releases energy to drive the moving component 16 to move along the second direction X2 opposite to the first direction X1, so as to close the air inlet pipe 13 and open the air outlet pipe 14.
[0032] The air valve 10 can be used to inflate and deflate the airbag, wherein the airbag connecting pipe 12 of the air valve 10 is used to connect to the airbag, the air inlet pipe 13 is used to connect to the air pump, and the air outlet pipe 14 is used to communicate with the outside or connect to a gas collection device. The airbag connecting pipe 12, the air inlet pipe 13 and the valve body 11 can be an integral injection molded part, and the air outlet pipe 14 can be fixed to the valve body 11 through a rubber sealing ring 141.
[0033] The valve body 11 of the air valve 10 is provided with a chamber 111, and the chamber 111 is provided with a memory wire 15, a moving assembly 16 and a reset member 17. The memory wire 15 will shrink after being powered on and heated, and will restore its original length after being powered off. Both ends of the memory wire 15 are respectively connected to an external trigger circuit to energize the memory wire 15 through the external trigger circuit. The memory wire 15 and the reset member 17 cooperate to drive the moving assembly 16 to move in two opposite directions, so that one of the inlet pipe 13 and the outlet pipe 14 is opened and the other is closed.
[0034] Please refer to Figure 3 When the airbag needs to be inflated, the external trigger circuit energizes the memory wire 15, and the memory wire 15 contracts, pulling the moving assembly 16 to move along the first direction X1. At this time, the moving assembly 16 is separated from the pipe opening of the air inlet pipe 13 and fits with the pipe opening of the air outlet pipe 14, so that the air inlet pipe 13 is opened and the air outlet pipe 14 is closed; at the same time, the moving assembly 16 stretches or compresses the reset member 17, so that the reset member 17 deforms and stores energy. The airbag connecting pipe 12 is always in an open state. When the air inlet pipe 13 is opened and the air outlet pipe 14 is closed, the airbag connecting pipe 12 is connected to the air inlet pipe 13 through the chamber 111, and the air pump can inflate the airbag.
[0035] Please refer to Figure 4When the airbag needs to be deflated, the external trigger circuit is disconnected, and the power supply to the memory wire 15 stops. The memory wire 15 recovers and no longer applies tension to the moving component 16. The reset member 17 releases energy and drives the moving component 16 to move in a second direction X2 opposite to the first direction X1. At this time, the moving component 16 fits with the pipe opening of the air inlet pipe 13 and separates from the pipe opening of the air outlet pipe 14, so that the air inlet pipe 13 is closed and the air outlet pipe 14 is opened. The airbag connecting pipe 12 is connected with the air outlet pipe 14 through the chamber 111 to realize the deflation of the airbag.
[0036] During the installation process, the reset member 17 can be stretched or compressed at the same time, and the reaction force of the reset member 17 can be used to tighten the memory metal wire 15.
[0037] The gas valve 10 uses a memory wire 15 to drive the movement of the moving component 16 inside the valve body 11, so as to achieve the effect of sealing the gas port to change the gas flow direction. The memory wire 15 is light in weight and occupies a small space, which effectively reduces the weight of the gas valve 10 and the volume of the valve body 11. There is no metal collision sound during operation, which reduces the noise. According to calculations, the overall power supply voltage of the gas valve 10 is about 3V. Therefore, the application range is wider and the requirements for the accuracy of the main power supply system are lower.
[0038] Optionally, see Figure 2 A bracket 18 is provided in the chamber 111, and the moving component 16 includes a slider 161 and a moving member 162 fixedly connected to the slider 161. The slider 161 is slidably set on the bracket 18 along the first direction X1. The middle part of the memory wire 15 is connected to the slider 161. The first side 1621 of the moving member 162 can close the air inlet pipe 13, and the second side 1622 opposite to the first side 1621 can close the air outlet pipe 14.
[0039] The bracket 18 is fixed in the chamber 111, and a slider 161 is provided on the bracket 18. The slider 161 can move along the first direction X1 on the bracket 18 under the pull of the memory wire 15. The moving member 162 is fixedly connected to the slider 161 and can move along the first direction X1 with the slider 161. The moving member 162 has a first side surface 1621 and a second side surface 1622 opposite to each other in the first direction X1, the first side surface 1621 is close to the air inlet pipe 13, and the second side surface 1622 is close to the air outlet pipe 14. One of the slider 161 and the moving member 162 also abuts against the reset member 17 to move along the second direction X2 under the drive of the reset member 17.
[0040] Please refer to Figure 3 When the memory wire 15 is energized and contracts, the slider 161 and the moving member 162 are pulled to move along the first direction X1 until the second side surface 1622 of the moving member 162 fits with the outlet of the air outlet pipe 14, thereby closing the air outlet pipe 14. Figure 4 When the memory wire 15 is powered off and restored, the reset member 17 releases energy, driving the slider 161 and the moving member 162 to move along the second direction X2 until the first side surface 1621 of the moving member 162 fits with the pipe opening of the air inlet pipe 13, thereby closing the air inlet pipe 13.
[0041] Optionally, a groove is provided on the slider 161 , and the middle portion of the memory metal wire 15 is inserted into the groove to achieve connection with the slider 161 .
[0042] Optionally, a first soft sealing pad 163 is provided on the first side surface 1621 of the movable member 162 , and the first soft sealing pad 163 corresponds to the pipe opening of the air inlet pipe 13 , and a second soft sealing pad 164 is provided on the second side surface 1622 , and the second soft sealing pad 164 corresponds to the pipe opening of the air outlet pipe 14 .
[0043] When the movable member 162 moves along the first direction X1, the second soft sealing pad 164 fits with the mouth of the air outlet pipe 14 to seal the air outlet pipe 14; when the movable member 162 moves along the second direction X2, the first soft sealing pad 163 fits with the mouth of the air inlet pipe 13 to seal the air inlet pipe 13. The provision of the first soft sealing pad 163 can improve the sealing performance between the movable member 162 and the air inlet pipe 13, preventing the leakage between the movable member 162 and the air inlet pipe 13 when the movable member 162 fits. Similarly, the provision of the second soft sealing pad 164 can improve the sealing performance between the movable member 162 and the air outlet pipe 14, preventing the leakage between the movable member 162 and the air outlet pipe 14 when the movable member 162 fits. In addition, the first soft sealing pad 163 and the second soft sealing pad 164 can also play a buffering effect, preventing the movable member 162 from being damaged by impact when fitting with the air inlet pipe 13 or with the air outlet pipe 14, or metal collision sound.
[0044] Optionally, the moving member 162 is covered on the bracket 18 , the slider 161 and the memory wire 15 .
[0045] The moving member 162 is hollow inside and has an opening on one side, and the moving member 162 covers the bracket 18, the slider 161 and the memory wire 15 through the opening like a cover. In this way, the space of the chamber 111 can be fully utilized and the volume of the valve body 11 can be further reduced.
[0046] Optionally, a first slide groove 181 is provided on the bracket 18, the middle part of the slider 161 is placed in the first slide groove 181, and two opposite inner walls of the moving member 162 are respectively provided with card grooves 1623, and the slider 161 is respectively inserted into the two card grooves 1623 at both ends perpendicular to the first direction X1.
[0047] The slider 161 is placed in the first slide groove 181 and can reciprocate along the first direction X1 and the second direction X2 in the first slide groove 181. The two ends of the slider 161 perpendicular to the first direction X1 extend out of the first slide groove 181 and cooperate with the two slots 1623 on the inner wall of the moving member 162, thereby realizing the synchronous movement between the slider 161 and the moving member 162.
[0048] Optionally, the end of the slot 1623 extends to the opening of the moving member 162 , and the end of the slot 1623 is funnel-shaped to facilitate the installation of the slider 161 .
[0049] Optionally, a slide rail 1624 is provided on the moving member 162, and a second slide groove cooperating with the slide rail 1624 is provided inside the valve body 11, the second slide groove extends along the first direction X1, and the moving member 162 slides along the second slide groove inside the valve body 11. The second slide groove guides the movement of the moving member 162, and can make the movement of the moving member 162 more stable and accurate.
[0050] Optionally, a mounting groove 182 is provided at the bottom of the first sliding groove 181 , and the reset member 17 is located in the mounting groove 182 , with one end of the reset member 17 abutting against the bottom of the mounting groove 182 and the other end abutting against the slider 161 .
[0051] The reset member 17 may be a spring, and the reset member 17 may be located on the side of the slider 161 facing the outlet pipe 14. In this case, when the slider 161 moves along the first direction X1 under the pull of the memory wire 15, the reset member 17 is compressed. The reset member 17 may also be located on the side of the slider 161 facing the inlet pipe 13. In this case, when the slider 161 moves along the first direction X1 under the pull of the memory wire 15, the reset member 17 is stretched.
[0052] Optionally, see Figure 5 and Figure 6 The valve body 11 includes an upper valve body 112 and a bottom plate 113 connected to the upper valve body 112. The chamber 111 is located in the upper valve body 112. The chamber 111 forms a chamber opening on the surface of the upper valve body 112, and the bottom plate 113 seals the chamber opening. Dividing the valve body 11 into two parts can facilitate the installation of the internal parts of the valve body 11.
[0053] A metal welding plate 191 is provided on the bottom plate 113 , and the metal welding plate 191 passes through the bottom plate 113 . The portion of the metal welding plate 191 located outside the valve body 11 is used to connect to an external trigger circuit, and the portion located inside the chamber 111 is provided with a metal clip 192 , and the end of the memory metal wire 15 is fixed on the metal clip 192 .
[0054] It can be understood that the number of the metal welding plates 191 and the metal clips 192 is at least two, at least two metal clips 192 are respectively fixed on at least two metal welding plates 191, and the two ends of the memory metal wire 15 are respectively fixed on the two metal clips 192. For example, the memory metal wire 15 is welded to the metal clips 192, and the metal clips 192 are fixed to the metal welding plates 191 by gluing.
[0055] Optionally, a step surface 142 is provided in the air outlet pipe 14 , and the reset member 17 is located in the air outlet pipe 14 , with one end of the reset member 17 abutting against the step surface 142 and the other end abutting against the moving component 16 .
[0056] Furthermore, two through holes with different diameters are coaxially arranged in the air outlet pipe 14 , and a step surface 142 is formed at the connection between the ends of the two through holes. The reset member 17 is located in the through hole with a larger diameter.
[0057] This embodiment also provides a massage device, including an airbag, an air pump and an air valve 10 as described above, the airbag is connected to the airbag connecting port of the air valve 10, and the air pump is connected to the air inlet of the air valve 10.
[0058] The massage device comprises the same structure and beneficial effects as the air valve 10 in the aforementioned embodiment. The structure and beneficial effects of the air valve 10 have been described in detail in the aforementioned embodiment and will not be repeated here.
[0059] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A gas valve, characterized in that: include: A valve body, an airbag connecting pipe, an air inlet pipe and an air outlet pipe arranged on the valve body, wherein a chamber is arranged in the valve body, and the airbag connecting pipe, the air inlet pipe and the air outlet pipe are respectively connected to the chamber; The chamber is provided with a memory metal wire, a moving component and a reset component, the two ends of the memory metal wire are respectively electrically connected to the external trigger circuit, and the middle part is connected to the moving component, one end of the reset component abuts against the valve body, and the other end abuts against the moving component; The memory metal wire contracts after being energized, pulling the movable assembly to move in a first direction to open the air inlet pipe, close the air outlet pipe, and cause the reset member to deform and store energy; the memory metal wire recovers after being de-energized, and the reset member releases energy to drive the movable assembly to move in a second direction opposite to the first direction to close the air inlet pipe and open the air outlet pipe.
2. The gas valve according to claim 1, characterized in that A bracket is provided in the chamber, and the movable component includes a slider and a movable part fixedly connected to the slider. The slider is slidably arranged on the bracket along the first direction, and the middle part of the memory metal wire is connected to the slider. The first side surface of the movable part can close the air inlet pipe, and the second side surface opposite to the first side surface can close the air outlet pipe.
3. The gas valve according to claim 2, characterized in that A first soft sealing pad is provided on the first side surface, and the first soft sealing pad corresponds to the pipe opening of the air inlet pipe. A second soft sealing pad is provided on the second side surface, and the second soft sealing pad corresponds to the pipe opening of the air outlet pipe.
4. The gas valve according to claim 2, characterized in that The moving part cover is arranged on the bracket, the sliding block and the memory metal wire.
5. The gas valve according to claim 4, characterized in that The bracket is provided with a first slide groove, the middle part of the slider is placed in the first slide groove, the two opposite inner walls of the moving part are respectively provided with clamping grooves, and the two ends of the slider perpendicular to the first direction are respectively clamped in the two clamping grooves.
6. The gas valve according to claim 5, characterized in that The bottom of the first sliding groove is provided with a mounting groove, the reset member is located in the mounting groove, one end of the reset member abuts against the bottom of the mounting groove, and the other end abuts against the sliding block.
7. The gas valve according to claim 2, characterized in that The movable member is provided with a slide rail, the interior of the valve body is provided with a second slide groove matched with the slide rail, the second slide groove extends along the first direction, and the movable member slides along the second slide groove in the valve body.
8. The gas valve according to claim 1, characterized in that The valve body comprises an upper valve body and a bottom plate connected to the upper valve body, the chamber is located in the upper valve body, the chamber forms a chamber opening on the surface of the upper valve body, and the bottom plate seals the chamber opening; A metal welding plate is provided on the bottom plate, and the metal welding plate is used to connect to the external trigger circuit. The metal welding plate passes through the bottom plate, and a metal clip is provided on the metal welding plate, and the end of the memory metal wire is fixed on the metal clip.
9. The gas valve according to claim 1, characterized in that A step surface is provided in the air outlet pipe, and the reset member is located in the air outlet pipe. One end of the reset member abuts against the step surface, and the other end abuts against the moving component.
10. A massage device, characterized in that: It comprises an air bag, an air pump and the air valve as claimed in any one of claims 1 to 9, wherein the air bag is connected to the air bag connecting pipe of the air valve, and the air pump is connected to the air inlet pipe of the air valve.