Gas switching valve, pneumatic comfort system and massage method

Abstract

The embodiment of the invention relates to the technical field of valves, and discloses a gas switching valve, a pneumatic comfort system and a massage method.The gas switching valve comprises a shell, a pushing part, a rotating part and a reset part, the shell is provided with a gas inlet and a plurality of consumption ports, the pushing part is slidably arranged in the shell, and the rotating part is arranged in the shell; the pushing part and the shell jointly form a valve chamber and an air inlet cavity communicated with the air inlet, the rotating part is provided with an inflation hole communicated with the valve chamber, the pushing part can move from a first position to a second position in the shell and drives the rotating part to rotate at the same time, and a consumption port communicated with an inflation inlet in the rotating part is switched through rotation of the rotating part. Further, the inflated air bags are switched; the pushing piece is provided with a fluid channel communicating with the valve chamber and the air inlet cavity and a valve assembly used for opening or closing the fluid channel, and the fluid channel can be opened when the pushing piece is located at the second position. By means of the mode, the cost can be saved, and the occupied space of the valve set can be saved.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of pneumatic valves, and in particular to a gas switching valve, a pneumatic comfort system and a massage method. Background Art

[0002] The current pneumatic comfort system mainly includes an air source, a valve group and an air bag. The air source is connected to each air bag through the valve group to inflate each air bag. The valve group is usually composed of multiple solenoid valves or SMA valves. Each air bag is connected to a solenoid valve or SMA valve. The inflation or deflation of each air bag is controlled by the on and off of the solenoid valve or SMA valve to achieve a massage effect.

[0003] However, as users' requirements for pneumatic comfort systems become more and more diverse, the number of air bags required is increasing, which requires more valve bodies to control the inflation and deflation of the air bags, resulting in increased cost and size of the valve group, and increased space occupied. Summary of the invention

[0004] The main technical problem solved by the embodiments of the present application is to provide a gas switching valve, a pneumatic comfort system and a massage method, which can save costs and save the space occupied by the valve group.

[0005] In order to solve the above technical problems, a technical solution adopted in an embodiment of the present application is: to provide a gas switching valve, including a shell and a pushing member, a rotating member and a reset member located inside the shell, one end of the shell is provided with an air inlet, and the other end is circumferentially provided with a plurality of consumption ports, the pushing member is slidingly and sealingly connected to the inner wall of the shell, a part of the inner wall of the shell close to the air inlet and the end face of the pushing member enclose an air inlet chamber with a variable volume, the air inlet is communicated with the air inlet chamber, the pushing member is transmission-connected with the rotating member, so that when the pushing member moves along the axial direction of the rotating member, it can drive the rotating member to rotate along the circumferential direction in a preset direction; the rotating member and the pushing member also enclose a valve chamber, and the end of the rotating member is provided with an air charging port communicated with the valve chamber and an air discharge groove communicated with the external environment; when the air inlet chamber and the valve When the air pressure difference in the chamber is greater than a threshold value, the pusher moves from a preset first position to a preset second position and simultaneously drives the rotating member to rotate, so that one of the consumption ports switches from being connected to the inflation port to being connected to the degassing groove, and the other adjacent consumption port is connected to the inflation port; when the air pressure difference in the air intake chamber and the valve chamber is less than a threshold value, the pusher is reset axially to the first position under the action of the reset member; the pusher is provided with a fluid channel for connecting the valve chamber and the air intake chamber and a valve assembly for opening or closing the fluid channel, the valve assembly closes the fluid channel when the pusher is in the first position, and opens the fluid channel at least when the pusher is in the second position, and the inflation port remains connected to the same consumption port, and the degassing groove remains connected to the same consumption port.

[0006] In some embodiments, a push rod is provided on the inner wall of the pushing member; a guide groove is provided on the outer wall of the rotating member, and at least a portion of the push rod is accommodated in the guide groove, so that when the pushing member slides along the axial direction of the shell, the push rod simultaneously moves in the same direction along the guide groove to drive the rotating member to rotate in the same direction relative to the shell.

[0007] In some embodiments, there are multiple push rods, and the multiple push rods are distributed at intervals along the circumferential direction.

[0008] In some embodiments, the valve assembly includes a ejector pin and an air plug. The ejector pin is movably arranged in the fluid channel. The air plug is fixed to one end of the ejector pin located in the air inlet chamber. The other end of the ejector pin protrudes from the pushing member to extend into the valve chamber. When the pushing member is in the first position, the air plug closes the fluid channel. When the pushing member is in the second position, the other end of the ejector pin abuts against the rotating member, so that the valve assembly and the pushing member undergo relative displacement and the air plug opens the fluid channel at the same time.

[0009] In some embodiments, the shell includes a base shell and a cover body, the cover body is covered on the base shell, the air inlet is arranged at one end of the base shell away from the cover body, the consumption port is arranged on the cover body, the inner wall of the cover body is provided with a rotating shaft, and the rotating part is rotatably mounted on the rotating shaft.

[0010] In some embodiments, the gas switching valve further includes a guide rod, one end of which is fixed to the cover body; the pusher is provided with a guide hole, and at least a portion of the guide rod is movably inserted into the guide hole.

[0011] In some embodiments, there are multiple guide rods, one end of each of which is fixed to the cover body, and the multiple guide rods are distributed at intervals; the pusher is provided with multiple guide holes, a guide rod is inserted into a guide hole, and a guide rod can slide along a guide hole.

[0012] In some embodiments, the reset member is a spring, and a guide column is provided on the inner wall of one end of the rotating member with the inflation port. One end of the spring is sleeved on the guide column and abuts against the inner wall of the rotating member, and the other end abuts against the inner wall of the pushing member.

[0013] In order to solve the above technical problems, another technical solution adopted in the embodiment of the present application is: to provide a pneumatic comfort system, including an air source, multiple air bags and the above-mentioned gas switching valve, the air source is connected to the air inlet, and the air bags are connected to the consumption ports one by one.

[0014] To solve the above technical problems, another technical solution adopted in the embodiment of the present application is: to provide a massage method, based on the above pneumatic comfort system, the method is to control the air source to open and close alternately at predetermined time intervals so that each air bag is alternately inflated or deflated in a preset order.

[0015] The beneficial effects of the embodiments of the present application are as follows: different from the prior art, in the embodiments of the present application, an air inlet is provided at one end of the shell, and a plurality of consumption ports are provided circumferentially at the other end, so that the pusher is slidably and sealedly connected to the inner wall of the shell, and a portion of the inner wall of the shell close to the air inlet and the end face of the pusher enclose an air inlet chamber with a variable volume, and the air inlet chamber is connected to the air inlet; the rotating member is rotatably arranged in the shell, and the rotating member and the pusher also enclose a valve chamber, the rotating member is provided with an air charging port connected to the valve chamber and an air discharge groove connected to the external environment, and a fluid channel for connecting the valve chamber and the air inlet chamber and a fluid channel for opening or closing the fluid channel are provided on the pusher. The valve assembly of the road, when the air pressure difference between the air inlet chamber and the valve chamber is greater than a threshold value, the pushing member moves from the first position to the second position, and at the same time drives the rotating member to rotate, so that one of the consumption ports is switched from being connected to the inflation port to being connected to the air release groove, and the other adjacent consumption port is connected to the inflation port; when the air pressure difference between the air inlet chamber and the valve chamber is less than the threshold value, the pushing member is reset to the first position axially under the action of the reset member, and the inflation port remains connected to the same consumption port, and the air release groove remains connected to the same consumption port, thereby realizing the control of inflation and exhaust of multiple air bags, without setting multiple valves, which is conducive to saving costs and saving occupied space.

[0016] In addition, the pneumatic switching valve is different from the solenoid valve group, and does not require large circuit boards and metal components. The valve body does not generate a lot of heat during operation, so the system can maintain stable operation. And the entire valve body does not produce obvious knocking sound when switching, unlike the valve core of the solenoid valve. The valve body of the present invention is sliding or rotating, so the mute effect is also very good. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0018] Figure 1 is a schematic structural diagram of a gas switching valve provided in an embodiment of the present application from a first perspective;

[0019] Figure 2 is a schematic diagram of the exploded structure of the gas switching valve provided in an embodiment of the present application;

[0020] Figure 3 is a schematic structural diagram of a gas switching valve provided in an embodiment of the present application at a second viewing angle;

[0021] Figure 4 When the pusher is in the first position, Figure 3Schematic diagram of the cross-sectional structure of the AA section;

[0022] Figure 5 When the pusher is in the second position, Figure 3 Schematic diagram of the cross-sectional structure of the AA section;

[0023] Figure 6 When the pusher is in the second position, Figure 3 Schematic diagram of the cross-sectional structure of the middle BB section;

[0024] Figure 7 It is a schematic diagram of the structure of the pneumatic comfort system provided in the embodiment of the present application.

[0025] Reference Numbers

[0026] 1000. pneumatic comfort system; 100. gas switching valve; 10. housing;

[0027] 1. bottom shell; 11. accommodating chamber; 111. air inlet chamber; 112. valve chamber; 12. air inlet;

[0028] 2. Cover body; 21. Rotating shaft; 22. Consumption port;

[0029] 3. Rotating member; 31. Inflating port; 32. Air release groove; 33. Guide groove; 34. Rotating hole; 35. Guide column;

[0030] 4. Pushing member; 41. Fluid channel; 411. Sliding hole; 412. Air vent; 44. Guide hole; 42. Valve assembly; 421. Ejector pin; 422. Air plug; 43. Push rod;

[0031] 5. Reset parts;

[0032] 6. Guide rod;

[0033] 200. Connecting pipes;

[0034] F, first axis; DETAILED DESCRIPTION

[0035] In order to facilitate the understanding of the present application, the present application is described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on another element or there can be one or more centered elements therebetween. When an element is described as "connected" to another element, it can be directly connected to another element or there can be one or more centered elements therebetween. The orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "vertical", "horizontal", etc. used in this specification is based on the orientation or positional relationship shown in the accompanying drawings, only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0036] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in this specification includes any and all combinations of one or more of the related listed items.

[0037] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0038] See also Figure 1 and Figure 2 The gas switching valve 100 includes a housing 10 , a pusher 4 , a rotating member 3 and a reset member 5 . The pusher 4 is slidably disposed in the housing 10 , the rotating member 3 is rotatably disposed in the housing 10 , and the reset member 5 is disposed in the housing 10 .

[0039] For the housing 10, see Figures 1 to 4 The shell 10 includes a bottom shell 1 and a cover body 2. The cover body 2 is arranged at one end of the bottom shell 1. The cover body 2 and the bottom shell 1 together enclose a receiving cavity 11. The rotating member 3, the pushing member 4 and the reset member 5 are all accommodated in the receiving cavity 11.

[0040] The bottom shell 1 is roughly cylindrical, see Figures 1 to 4The bottom shell 1 is provided with an air inlet 12, one end of which is connected to the outside, and the other end of which is connected to the accommodating chamber 11. The air inlet 12 is used to connect to an air source (not shown) so that the air source can inflate the accommodating chamber 11 through the air inlet 12. The cover body 2 is installed at one end of the bottom shell 1 away from the air inlet 12, and the pusher 4 is received in the accommodating chamber 11. The pusher 4 is sealed and connected to the side wall of the accommodating chamber 11, and the pusher 4 can reciprocate in the accommodating chamber 11 along a first direction X, and the first direction X is parallel to the axis of the accommodating chamber 11. Among them, the pusher 4 divides the accommodating chamber 11 into an air inlet chamber 111 and a valve chamber 112, the air inlet chamber 111 is connected to the air inlet 12, and the volumes of the air inlet chamber 111 and the valve chamber 112 change accordingly with the movement of the pusher 4. The rotating member 3 is accommodated in the accommodating cavity 11, and the rotating member 3 can rotate relative to the bottom shell 1 around the first axis F, wherein the first axis F coincides with the axis of the accommodating cavity 11. The rotating member 3 abuts against the surface of the cover body 2 facing the air inlet 12, and the rotating member 3 is connected to the push member 4. When the push member 4 slides along the first direction X, the push member 4 can drive the rotating member 3 to rotate relative to the cover body 2 around the first axis F. Among them, the air inlet chamber 111 is formed by the inner wall of the bottom shell 1 near the air inlet 12 and the end face of the push member 3, and the valve chamber 112 is formed by the inner wall of the shell 10, the push member 3 and the rotating member 4.

[0041] For the above-mentioned cover 2, please refer to Figures 2 to 4 The cover body 2 is provided with a plurality of consumption ports 22, and the plurality of consumption ports 22 all penetrate the cover body 2 along the first direction X. The plurality of consumption ports 22 can be used to connect with an air bag (not shown), and one consumption port 22 corresponds to one air bag, so that the air bag can be inflated or exhausted through the consumption port 22.

[0042] For the above-mentioned rotating member 3, please refer to Figure 2 and Figure 6 , the rotating member 3 can be used to switch the consumption port 22 connected to the valve chamber 112, thereby switching the inflated air bag. Specifically, the rotating member 3 is provided with an inflation port 31 and an air release groove 32. One end of the inflation port 31 is connected to the valve chamber 112, and the other end of the inflation port 31 is used to communicate with the above-mentioned consumption port 22. The air release groove 32 is provided on the side of the rotating member 3 facing the consumption port 22, and the air release groove 32 is connected to the outside. The air release groove 32 is used to connect to the consumption port 22 to discharge the gas in the air bag. Specifically, when the rotating member 3 rotates around the first axis F relative to the cover body 2 so that the inflation port 31 is connected to a consumption port 22 on the cover body 2, the gas in the valve chamber 112 can be filled into the air bag through the inflation port 31 and the consumption port 22 connected to the inflation port 31. At the same time, the air release groove 32 is connected to another consumption port 22 to discharge the gas in the air bag connected to the air release groove 32. For the convenience of description, please refer to Figure 1 and Figure 2 , the above-mentioned multiple consumption ports 22 are numbered 22a, 22b, 22c, 22d... in sequence, please combine Figure 6 When the rotating part 3 rotates until the inflation port 31 is connected to the consumption port 22b, the gas in the valve chamber 112 can be filled into the corresponding air bag through the inflation port 31 and the consumption port 22b. At this time, the consumption port 22a is connected to the air release groove 32, so that the air bag corresponding to the consumption port 22a can be exhausted to the external environment through the air release groove 32; when the rotating part 3 continues to rotate, the inflation port 31 can be connected to the next consumption port 22c, and the air release groove 32 can be connected to the previous consumption port 22b, so as to exhaust the previous inflated air bag, thereby realizing the control of the inflation and exhaust of multiple air bags. That is to say, after the rotating part 3 rotates one circle, the above-mentioned consumption ports (22a, 22b, 22c, 22d...) are connected with the inflation port 31 once respectively, so that each air bag can be inflated once; at the same time, each consumption port 22a, 22b, 22c, 22d...) is connected with the air discharge groove 32 once respectively, so that each air bag can be deflated once; the switching of the inflation and deflation of the air bag is realized by the rotation of the rotating part 3, and there is no need to use multiple valve bodies for control, thereby achieving the effect of reducing cost and reducing volume.

[0043] For the above-mentioned pusher 4, please refer to Figure 2 , Figure 4 , Figure 5 and Figure 6 The pusher 4 can slide back and forth along the first direction X between a preset first position and a preset second position in the accommodating cavity 11, wherein the second position is closer to the cover body 2 than the first position. Figure 4 shows a cross-sectional view of the gas switching valve 100 when the pusher 4 is in the first position, Figure 5 and Figure 6 The figure shows a cross-sectional view of the gas switching valve 100 when the pusher 4 is in the second position. The pusher 4 is provided with a fluid channel 41 and a valve assembly 42. The fluid channel 41 is used to connect the air inlet chamber 111 and the valve chamber 112. The valve assembly 42 is slidably provided in the fluid channel 41, and the valve assembly 42 is used to open or close the fluid channel 41. When the valve assembly 42 is opened, the fluid channel 41 is opened, and the fluid channel 41 connects the air inlet chamber 111 and the valve chamber 112. At this time, the gas generated by the air source can be filled into the air bag through the air inlet 12, the air inlet chamber 111, the fluid channel 41, the valve chamber 112, the inflation port 31 and the consumption port 22 connected to the inflation port 31 in sequence; when the valve assembly 42 is closed, the fluid channel 41 is closed. If the air source inflates the air inlet chamber 111 at this time, the air pressure in the air inlet chamber 111 can be made greater than the air pressure in the valve chamber 112. When the air pressure difference between the air inlet chamber 111 and the valve chamber 112 is greater than the threshold value, the pusher 4 moves along the first direction X close to the cover body 2. When the pusher 4 moves to the second position, as shown in FIG. Figure 5 and Figure 6 As shown, the valve assembly 42 is opened. At this time, the gas generated by the gas source can pass through the air inlet 12, the air inlet chamber 111, the fluid channel 41, the valve chamber 112 and the inflation port 31 in sequence and then enter the consumption port 22 connected to the inflation port 31, and finally enter the air bag connected to the consumption port 22.

[0044] In some embodiments, see Figure 2 , the pusher 4 is connected to the rotating member 3. When the pusher 4 slides along the first direction X in the accommodating chamber 11, the pusher 4 drives the rotating member 3 to rotate around the first axis F, thereby switching the consumption port 22 connected to the inflation port 31, so that the gas source can inflate different air bags. In this embodiment, the pusher 4 drives the rotating member 3 to rotate, and the consumption port 22 connected to the inflation port 31 is switched by the rotation of the rotating member 3, thereby switching the inflated air bag; at the same time, the consumption port 22 connected to the exhaust groove 32 is switched, thereby switching the exhausted air bag, so that one gas switching valve 100 can control the inflation and exhaust of multiple air bags, without setting multiple valves to achieve the control of inflation and exhaust of multiple air bags, thereby saving costs and reducing the occupied space of the valve group. In addition, the pneumatic switching valve 100 in this embodiment is different from the solenoid valve group, does not require a large circuit board and metal material components, and the valve body does not generate a lot of heat during operation, so that the system maintains stable operation. Furthermore, unlike the valve core of the solenoid valve, the entire valve body does not produce obvious knocking sound during switching. In this embodiment, the valve body is slidably or rotatably matched, so the mute effect is also very good.

[0045] In some embodiments, see Figure 2 and Figure 6 , observed along the first direction X, multiple consumption ports 22 are distributed in a circular pattern around the first axis F, and the distance between each two adjacent consumption ports 22 is the same, so that when the rotating member 3 rotates around the first axis F, the consumption port 22 connected to the inflation port 31 can be switched, thereby controlling the inflation and exhaust of multiple air bags.

[0046] It is worth noting that, during the process of the push member 4 sliding from the first position to the second position, the gas charging port 31 of the rotating member 3 remains connected to the same consumption port 22, and the gas discharge groove 32 remains connected to the same consumption port 22. Also, during the process of the push member 4 sliding from the second position to the first position, the consumption port 22 connected to the gas charging port 31 is switched, and the consumption port 22 connected to the gas discharge groove 32 is switched at the same time.

[0047] In some embodiments, see Figure 2The push member 4 is provided with a push rod 43, one end of which is fixed to the inner wall of the push member 4, and the other end of which extends toward the axis of the accommodating chamber 11. The outer wall of the rotating member 3 is provided with a guide groove 33, and at least a part of the push rod 43 is accommodated in the guide groove 33, so that when the push member 4 slides in the accommodating chamber 11 along the first direction X, under the cooperation of the push rod 43 and the guide groove 33, the rotating member 3 rotates relative to the cover body 2, thereby switching the consumption port 22 connected to the inflation port 31, and switching the consumption port 22 connected to the deflation groove 32, so as to achieve the effect of controlling the inflation and deflation of multiple air bags.

[0048] It is worth noting that the guide groove 33 extends roughly in a wave shape on the outer side wall of the rotating member 3, and the head and tail ends of the guide groove 33 are connected together, so that when the pusher 4 reciprocates along the first direction X, the rotating member 3 can be pushed to rotate continuously in the same direction. That is to say, when the rotating member 3 rotates one circle, each consumption port 22 is connected to the inflation port 31 once, and each consumption port 22 is also connected to the degassing groove 32 once, so as to control the inflation and exhaust of each air bag. In this embodiment, by setting the guide groove 33 to be wave-shaped, the reciprocating movement of the pushing member 4 along the first direction X can be converted into the continuous rotation of the rotating member 3 in the same direction. By controlling the movement of the pushing member 4, the consumption port 22 connected to the inflation port 31 can be switched, and then the inflated air bag can be switched, and the consumption port 22 connected to the degassing groove 32 can be switched, and then the exhausted air bag can be switched, which is very convenient.

[0049] In some embodiments, there are multiple push rods 43, one end of each of the multiple push rods 43 is fixed to the inner wall of the push member 4, and the other end of each push rod extends toward the axis of the accommodating chamber 11, and when viewed along the first direction X, the multiple push rods 43 are distributed in a circumferential shape around the axis of the accommodating chamber 11, and the multiple push rods 43 are at least partially accommodated in the guide groove 33. When the push member 4 reciprocates along the first direction X, the multiple push rods 43 cooperate with the guide groove 33 together, thereby driving the rotating member 3 to rotate, and then switching the consumption port 22 connected to the inflation port 31, and at the same time switching the consumption port 22 connected to the degassing groove 32. In this embodiment, by providing multiple push rods 43, it is beneficial to improve the stability of the rotating member 3 during rotation.

[0050] In some embodiments, see Figure 4 and Figure 5The valve assembly 42 includes a pin 421 and an air plug 422. The pin 421 is disposed in the pusher 4 along the first direction X, and the pin 421 can slide relative to the pusher 4 along the first direction X. The air plug 422 is fixed to one end of the pin 421 located in the air inlet chamber 111, and the other end of the pin 421 protrudes from the pusher 4 and extends into the valve chamber 112. The air plug 422 is used to open or close the fluid channel 41. When the air source inflates the air inlet chamber 111 through the air inlet 12, the pushing member 4 moves from the first position to the second position. When the pushing member 4 moves to the point where the end of the ejector pin 421 away from the air plug 422 abuts against the rotating member 3, the air inlet chamber 111 continues to be inflated, so that the pushing member 4 can continue to slide a distance along the first direction X to the second position. At this time, the ejector pin 421 pushes the air plug 422 open, thereby forming a gap between the air plug 422 and the fluid channel 41, thereby opening the fluid channel 41. At this time, the gas in the air inlet chamber 111 can flow from the fluid channel 41 into the valve chamber 112, and flow into the air bag through the inflation port 31 and the consumption port 22 connected to the inflation port 31. In this embodiment, by providing a push pin 421 and an air plug 422, when the push member 4 slides to the second position, the push pin 421 pushes the air plug 422 open to separate the air plug 422 from the fluid channel 41, thereby connecting the air inlet chamber 111 with the valve chamber 112, with a simple structure and easy operation.

[0051] In some embodiments, see Figure 4 and Figure 5 The fluid channel 41 includes a sliding hole 411 and a vent hole 412. The ejector pin 421 is slidably disposed in the sliding hole 411, and the ejector pin 421 at least partially protrudes from the sliding hole 411 and then extends into the valve chamber 112. The vent hole 412 is spaced apart from the sliding hole 411. The vent hole 412 constitutes a main channel for fluid communication between the air inlet chamber 111 and the valve chamber 112. The air plug 422 is used to block the sliding hole 411 and the vent hole 412 to close the fluid channel 41. When the pusher 4 moves to the second position, the ejector pin 421 pushes the air plug 422 open, so that the air plug 422 and the vent hole 412 are separated from each other, so that the vent hole 412 is opened, and the gas in the air inlet chamber 111 can flow into the valve chamber 112 through the vent hole 412.

[0052] In some embodiments, see Figure 2 There are multiple vent holes 412 . When viewed along the first direction X, the multiple vent holes 412 are distributed in a circular pattern with the sliding hole 411 as the center, so that the air plug 422 can block the multiple vent holes 412 at the same time.

[0053] In some embodiments, see Figure 2 , Figure 4 and Figure 5, the reset member 5 is a spring, the reset member 5 is arranged between the pushing member 4 and the rotating member 3, one end of the reset member 5 abuts against the pushing member 4, and the other end of the reset member 5 abuts against the rotating member 3, and the reset member 5 is used to keep the pushing member 4 in the first position. Specifically, when the gas source stops injecting airflow into the air inlet chamber 111, the air pressure difference between the air inlet chamber 111 and the valve chamber 112 gradually decreases, and when the air pressure difference between the air inlet chamber 111 and the valve chamber 112 decreases to less than a threshold value, under the action of the reset member 5, the pushing member 4 moves from the second position to the first position, and finally stays in the first position; at this time, after the gas source injects gas into the air inlet chamber 111, the air pressure in the air inlet chamber 111 gradually increases, and the pressure difference between the air inlet chamber 111 and the valve chamber 112 gradually increases, so that the gas plug 422 gradually approaches the fluid channel 41, until the gas plug 422 abuts against the pushing member 4 and blocks the fluid channel 41 (such as Figure 4 When the gas plug 422 blocks the fluid channel 41, the gas source continues to inject gas into the air inlet chamber 111, so that the pressure difference between the air inlet chamber 111 and the valve chamber 112 continues to increase. When the pressure difference between the two is greater than the threshold, the pusher 4 breaks through the elastic force of the reset member 5 and slides toward the cover body 2; please refer to Figure 5 and Figure 6 When the push member 4 moves to the second position, the ejector pin 421 pushes the gas plug 422 open, so that a gap is formed between the gas plug 422 and the fluid channel 41, so that the gas in the air inlet chamber 111 can flow from the fluid channel 41 into the valve chamber 112. In the process of the push member 4 moving from the first position to the second position, the push rod 43 slides along the guide groove 33 of the rotating member 3, thereby driving the rotating member 3 to rotate, and then switching the consumption port 22 connected to the charging port 31. When the push member 4 moves to the second position, please refer to Figure 6The inflation port 31 is connected to the consumption port 22, so that the gas generated by the gas source can enter the air bag after passing through the air inlet 12, the air inlet chamber 111, the fluid channel 41, the valve chamber 112, the inflation port 31 and the consumption port 22 connected to the inflation port 31 in sequence. When the airbag is inflated, the gas source can be controlled to stop generating gas. At this time, under the action of the reset member 5, the push member 4 slides from the second position to the first position. At the same time, under the joint action of the push rod 43 and the guide groove 33, the rotating member 3 continues to rotate around the first axis F, so as to switch the consumption port 22 connected to the inflation port 31 and switch the consumption port 22 connected to the degassing groove 32; when the push member 4 moves to the first position, the gas source can be controlled to inflate the air inlet chamber 111, so that the air plug 422 can continue to block the fluid channel 41, and then the push member 4 is moved from the first position to the second position, and the consumption port 22 connected to the inflation port 31 and the consumption port 22 connected to the degassing groove 32 are switched, so as to inflate and exhaust other airbags. In this embodiment, by setting the reset member 5, when the gas source is working, the push member 4 can move from the first position to the second position, and the push member 4 drives the rotating member 3 to rotate through the push rod 43, so as to switch the consumption port 22 connected to the inflation port 31, and then switch the air bag for inflation; when the gas source stops working, the reset member 5 can drive the push member 4 to move from the second position to the first position, and at the same time, the push member 4 drives the rotating member 3 to continue to rotate through the push rod 43, so as to switch the consumption port 22 connected to the inflation port 31. In other words, by controlling the gas source to inflate or stop inflate the air inlet chamber 111, it is possible to switch the consumption port 22 connected to the inflation port 31 and the consumption port 22 connected to the air discharge groove 32, thereby achieving the effect of controlling the inflation or exhaust of multiple air bags, which is convenient to operate and easy to control.

[0054] It is worth noting that, among all the above-mentioned consumption ports 22, two adjacent consumption ports 22 are vacant (i.e., not connected to the air bag). For example, 10 consumption ports are set, and generally 8 air bags are set corresponding to the 8 consumption ports, and the remaining 2 consumption ports are vacant and adjacently arranged. The 2 vacant consumption ports serve as stop positions. In this way, by continuously opening and closing the air pump, the air bags can be inflated and deflated alternately in turn. When it is necessary to deflate the gas in all the air bags, turn the inflation port and the deflation groove until they are connected to the consumption port, and then turn off the air pump.

[0055] In some embodiments, a guide post 35 is disposed on the inner wall of one end of the rotating member 3 having the inflation port 31 , one end of the reset member 5 is sleeved on the guide post 35 , and the other end of the reset member 5 abuts against the pushing member 4 .

[0056] It is worth mentioning that, in the process of the push member 4 moving from the first position to the second position, it is necessary to ensure that a pressure difference can be generated between the air inlet chamber 111 and the valve chamber 112, so that when the gas source fills the air inlet chamber 111 with gas, the push member 4 can be driven to move, thereby driving the rotating member 3 to rotate. Therefore, when the push member 4 is in the first position, the inflation port 31 needs to be connected with the consumption port 22 to ensure that the gas in the valve chamber 112 can flow to the uninflated air bag, otherwise the inflation port 31 is closed, the gas in the valve chamber 112 cannot flow and the push member 4 is stuck; on the other hand, after the air bag is continuously inflated and exhausted, the pressure difference between the air inlet chamber 111 and the valve chamber 112 will fluctuate, and the different pressure differences will cause the hovering position of the push member 4 to be uncertain, that is, in the process of the push member 4 moving back and forth once, the rotation angle of the rotating member 3 will fluctuate within a certain range, so that it is easy for the inflation port 31 to not be connected with the consumption port 22 when the push member 4 is hovering.

[0057] To solve the above problems, please refer to Figure 2 In the circumferential direction around the first axis F, the length of the inflation port 31 is greater than the length of the consumption port 22, so that the inflation port 31 is roughly waist-shaped. In this arrangement, as the air pressure in the air bag continues to increase, the pressure difference between the air inlet chamber 111 and the valve chamber 112 also fluctuates continuously, which may cause the pusher 4 to hover at any position between the second position and the first position. Please refer to Figure 6 By designing the inflation port 31 into a waist shape, it can be ensured that the inflation port 31 is always in an open state during this process, so that the inflation port 31 remains connected with the same consumption port 22, which facilitates the gas in the valve chamber 112 to flow to the air bag and reduces the risk of the push member 4 getting stuck; in addition, during a single start-up of the gas source, even if the hovering position of the push member 4 fluctuates, it can be ensured that the inflation port 31 is connected with the same consumption port 22, ensuring that the gas generated by the gas source can be filled into the same air bag.

[0058] In some embodiments, see Figure 2 In the circumferential direction around the first axis F, the length of the gas relief groove 32 is greater than the length of the consumption port 22, so that the gas relief groove 32 is roughly waist-shaped. Similarly, in this configuration, even if the hovering position of the pusher 4 fluctuates within a certain range, it can ensure that the gas relief groove 32 is connected to a consumption port 22, so that the gas in the air bag connected to the consumption port 22 is discharged.

[0059] In some embodiments, see Figure 4 The cover body 2 is provided with a rotating shaft 21, and at least a part of the rotating shaft 21 is received in the accommodating cavity 11. The rotating member 3 is provided with a rotating hole 34, and the rotating shaft 21 is inserted into the rotating hole 34, and the rotating member 3 can rotate around the rotating shaft 21.

[0060] In some embodiments, see Figure 2 The gas switching valve 100 includes a guide rod 6, one end of which is fixed to the cover body 2, and the other end of which extends toward the inside of the accommodating cavity 11 along the first direction X. The pusher 4 is provided with a guide hole 44, at least part of the guide rod 6 is received in the guide hole 44, and the guide rod 6 can slide along the guide hole 44, and the guide rod 6 is used to guide the moving direction of the pusher 4, thereby improving the stability of the movement of the pusher 4.

[0061] In some embodiments, there are multiple guide rods 6, one end of each of the multiple guide rods 6 is fixed to the cover body 2, and the other end of each of the multiple guide rods 6 extends toward the inside of the accommodating cavity 11 along the first direction X, and the multiple guide rods 6 are parallel to each other. The pusher 4 is provided with multiple guide holes 44, one guide rod 6 is inserted into one guide hole 44, and one guide rod 6 can slide along one guide hole 44. In this embodiment, by providing multiple guide rods 6, the stability of the movement of the pusher 4 can be further improved.

[0062] In the embodiment of the present application, an air inlet 12 is provided at one end of the shell 10, and a plurality of consumption ports 22 are provided circumferentially at the other end, so that the push member 4 is slidably and sealedly connected to the inner wall of the shell 10, and a portion of the inner wall of the shell 10 close to the air inlet 12 and the end face of the push member 4 enclose an air inlet chamber 111 with a variable volume, and the air inlet chamber 111 is connected to the air inlet 12; the rotating member 3 is rotatably provided in the shell 10, and the rotating member 3 and the push member 4 also enclose a valve chamber 112, and the rotating member 3 is provided with an inflation port 31 connected to the valve chamber 112 and an air discharge groove 32 connected to the external environment, and a fluid channel 41 for connecting the valve chamber 112 and the air inlet chamber 111 and a valve assembly for opening or closing the fluid channel 41 are provided on the push member 4. 42. When the air pressure difference between the air inlet chamber 111 and the valve chamber 112 is greater than the threshold value, the push member 4 moves from the first position to the second position, and at the same time drives the rotating member 3 to rotate, so that one of the consumption ports 22 switches from being connected to the inflation port 31 to being connected to the degassing groove 32, and the other adjacent consumption port 22 is connected to the inflation port 31; when the air pressure difference between the air inlet chamber 111 and the valve chamber 112 is less than the threshold value, the push member 4 is reset axially to the first position under the action of the reset member 5, and the inflation port 31 remains connected to the same consumption port 22, and the degassing groove 32 remains connected to the same consumption port 22, thereby realizing the control of the inflation and exhaust of multiple air bags without setting multiple valves, which is conducive to saving costs and saving occupied space.

[0063] In addition, the pneumatic switching valve 100 is different from the solenoid valve group, does not need a large circuit board and metal material components, and the valve body does not generate a lot of heat during operation, so that the system can maintain stable operation. And the entire valve body does not produce obvious knocking sound when switching, unlike the valve core of the solenoid valve. The valve body of the present invention is sliding or rotating, so the mute effect is also very good.

[0064] This application also provides an embodiment of a pneumatic comfort system 1000, please refer to Figure 7 The pneumatic comfort system 1000 includes an air source, a plurality of air bags and the above-mentioned gas switching valve 100, wherein one air bag is connected to one consumption port 22. The air source is connected to the air inlet 12, and the air source is used to generate gas, and the gas is filled into the air bag after passing through the accommodating cavity 11, the inflation port 31 and the consumption port 22. The pneumatic comfort system 1000 can produce an undulating effect by controlling the inflation and exhaust of each air bag, thereby achieving the purpose of massaging the human body.

[0065] In some embodiments, see Figure 7 The pneumatic comfort system 1000 includes a plurality of connecting pipes 200, which correspond to a plurality of consumption ports 22 one by one. One end of a connecting pipe 200 is connected to a consumption port 22, and the other end of a connecting pipe 200 is connected to an air bag, so that the gas in the accommodating cavity 11 can enter the air bag after passing through the inflation port 31, the consumption port 22 and the connecting pipe 200 in sequence. By providing the connecting pipe 200, the arrangement of the air bags can be facilitated, so as to facilitate massaging the human body.

[0066] The present application also provides a massage method, which is applied to the above-mentioned pneumatic comfort system 1000. The method is to control the air source to be alternately opened and closed at predetermined time intervals so that each air bag is alternately inflated or deflated in a preset order.

[0067] Specifically, the method comprises:

[0068] Step S1: Inflate the air inlet chamber 111 through an air source to make the pusher 4 slide along the accommodating chamber 11, and at the same time, the pusher 4 drives the rotating member 3 to rotate relative to the cover body 2 to switch the consumption port 22 connected to the air charging port 31, and at the same time switch the consumption port 22 connected to the air discharge groove 32;

[0069] Step S2: When the pusher 4 slides to the second position, the fluid channel 41 is opened, and the fluid channel 41 connects the air inlet chamber 111 and the valve chamber 112. The gas generated by the gas source is injected into the air bag through the air inlet 12, the air inlet chamber 111, the fluid channel 41, the valve chamber 112 and the consumption port 22 in sequence. At the same time, the air discharge groove 32 is connected to another consumption port 22 to exhaust the air bag.

[0070] Step S3: Control the air source to stop charging the air inlet chamber 111, and the pusher 4 slides from the second position to the first position. Driven by the pusher 4, the rotating member 3 rotates;

[0071] Repeat steps S1 to S3.

[0072] In this embodiment, by switching the inflated air bag and the exhausted air bag, an undulating effect is formed, thereby massaging the human body, and the effect of switching the inflated air bag can be achieved by simply controlling the inflation and stop of the air source, and the control process is simple.

[0073] The above descriptions are merely embodiments of the present application and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A pneumatic switching valve, characterized in that: include: The invention comprises a shell and a pusher, a rotating member and a reset member located inside the shell, wherein an air inlet is provided at one end of the shell and a plurality of consumption ports are provided at the other end along the circumferential direction, the pusher is slidably and sealedly connected to the inner wall of the shell, a part of the inner wall of the shell near the air inlet and the end surface of the pusher form an air inlet chamber with a variable volume, the air inlet is communicated with the air inlet chamber, and the pusher is transmission-connected to the rotating member so that when the pusher moves along the axial direction of the rotating member, the rotating member can be driven to rotate along the circumferential direction in a preset direction; The rotating member and the pushing member further enclose a valve chamber, and the end of the rotating member is provided with an air filling port connected to the valve chamber and an air discharge groove connected to the external environment; when the air pressure difference between the air inlet chamber and the valve chamber is greater than a threshold value, the pushing member moves from a preset first position to a preset second position and simultaneously drives the rotating member to rotate, so that one of the consumption ports switches from being connected to the air filling port to being connected to the air discharge groove, and another adjacent consumption port is connected to the air filling port; when the air pressure difference between the air inlet chamber and the valve chamber is less than a threshold value, the pushing member is reset axially to the first position under the action of the reset member, and the air filling port remains connected to the same consumption port, and the air discharge groove remains connected to the same consumption port; The push member is provided with a fluid channel for connecting the valve chamber and the air inlet chamber and a valve assembly for opening or closing the fluid channel. The valve assembly closes the fluid channel when the push member is in the first position, and opens the fluid channel at least when the push member is in the second position.

2. The gas switching valve according to claim 1, characterized in that: The inner wall of the pushing member is provided with a push rod; The outer wall of the rotating member is provided with a guide groove, and at least a portion of the push rod is accommodated in the guide groove, so that when the pushing member slides along the axial direction of the shell, the push rod simultaneously moves in the same direction along the guide groove to drive the rotating member to rotate in the same direction relative to the shell.

3. The gas switching valve according to claim 2, characterized in that: There are multiple push rods, and the multiple push rods are distributed at intervals along the circumferential direction.

4. The gas switching valve according to claim 1, characterized in that: The valve assembly includes a ejector pin and an air plug. The ejector pin is movably arranged in the fluid passage. The air plug is fixed to one end of the ejector pin located in the air inlet chamber. The other end of the ejector pin protrudes from the pushing member to extend into the valve chamber. When the pushing member is located in the first position, the air plug closes the fluid passage. When the pushing member is located in the second position, the other end of the ejector pin abuts against the rotating member, so that the valve assembly and the pushing member are relatively displaced and the air plug opens the fluid passage at the same time.

5. The gas switching valve according to claim 1, characterized in that: The shell includes a bottom shell and a cover body, the cover body is covered on the bottom shell, the air inlet is arranged at one end of the bottom shell away from the cover body, the consumption port is arranged on the cover body, the inner wall of the cover body is provided with a rotating shaft, and the rotating member is rotatably mounted on the rotating shaft.

6. The gas switching valve according to claim 5, characterized in that: The gas switching valve further includes a guide rod, one end of which is fixed to the cover body; The pushing member is provided with a guide hole, and at least a part of the guide rod is movably inserted in the guide hole.

7. The gas switching valve according to claim 8, characterized in that: There are multiple guide rods, one end of each of the guide rods is fixed to the cover body, and the guide rods are spaced apart. The pushing member is provided with a plurality of guide holes, one guide rod is inserted into one guide hole, and one guide rod can slide along one guide hole.

8. The gas switching valve according to any one of claims 1 to 7, characterized in that: The reset member is a spring, and a guide column is provided on the inner wall of one end of the rotating member with the inflation port. One end of the spring is sleeved on the guide column and abuts against the inner wall of the rotating member, and the other end abuts against the inner wall of the pushing member.

9. A pneumatic comfort system, characterized in that: It comprises a gas source, a plurality of gas bags and the gas switching valve according to any one of claims 1 to 8, wherein the gas source is connected to the gas inlet, and the gas bags are connected to the consumption ports in a one-to-one correspondence.

10. A massage method, based on the pneumatic comfort system according to claim 9, characterized in that: The air source is controlled to be opened and closed alternately at predetermined time intervals, so that each air bag is inflated or deflated alternately in a preset sequence.

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