Gas switching valve and pneumatic comfort system

Abstract

The embodiment of the utility model relates to the technical field of valves, and discloses a gas switching valve and a pneumatic comfort system.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 arranged in the shell in a sliding mode, the pushing part and the shell jointly form a valve chamber and a gas inlet cavity communicated with the gas inlet, and the rotating part is arranged in the valve chamber; 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 drive the rotating part to rotate at the same time, the consumption port communicated with the inflation opening in the rotating part is switched through rotation of the rotating part, and then the inflated air bag is 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] This application relates to the field of pneumatic valve technology, and in particular to a gas switching valve and a pneumatic comfort system. Background Technology

[0002] Current pneumatic comfort systems mainly consist of an air source, a valve assembly, and air bags. The air source is connected to each air bag through the valve assembly to inflate each air bag. The valve assembly usually consists 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 opening and closing the solenoid valve or SMA valve, thereby achieving a massage effect.

[0003] However, as users' requirements for pneumatic comfort systems become more diverse, the number of air bags needed is increasing. This requires more valves to control the inflation and deflation of the air bags, leading to increased cost, larger size, and larger space occupation of the valve assembly. Utility Model Content

[0004] The main technical problem solved by the embodiments of this application is to provide a gas switching valve and a pneumatic comfort system that can save costs and save space occupied by valve groups.

[0005] To solve the above-mentioned technical problems, one technical solution adopted in this application embodiment is: providing a gas switching valve, including a housing and a pusher, a rotating member, and a reset member located inside the housing. One end of the housing is provided with an air inlet, and the other end is provided with multiple consumption ports along the circumference. The pusher is slidably sealed to the inner wall of the housing. The inner wall of the housing near the air inlet and the end face of the pusher form a variable-volume air inlet chamber. The air inlet communicates with the air inlet chamber. The pusher and the rotating member are drively connected so that when the pusher moves along the axial direction of the rotating member, it can drive the rotating member to rotate circumferentially in a preset direction. The rotating member and the pusher also form a valve chamber. The end of the rotating member is provided with an air inlet communicating with the valve chamber and an air vent communicating with the external environment. When the air inlet chamber and the valve... When the pressure difference in the chamber exceeds a threshold, the pusher moves from a preset first position to a preset second position and simultaneously drives the rotating component to rotate, so that one of the consumption ports switches from being connected to the inflation port to being connected to the venting groove, and another adjacent consumption port is connected to the inflation port; when the pressure difference between the intake chamber and the valve chamber is less than the threshold, the pusher is reset axially to the first position under the action of the reset component; the pusher is provided with a fluid channel for connecting the valve chamber and the 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 venting groove remains connected to the same consumption port.

[0006] In some embodiments, the inner wall of the pusher 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 received in the guide groove, so that when the pusher slides along the axial direction of the housing, the push rod moves in the same direction along the guide groove at the same time, so as to drive the rotating member to rotate relative to the housing in the same direction.

[0007] In some embodiments, there are multiple push rods, which are distributed at intervals along the circumference.

[0008] In some embodiments, the valve assembly includes a pin and a plug. The pin is movably disposed in a fluid passage, and the plug is fixed to one end of the pin located in the air inlet chamber. The other end of the pin protrudes from the pusher to extend into the valve chamber. When the pusher is in a first position, the plug closes the fluid passage. When the pusher is in a second position, the other end of the pin abuts against a rotating member to cause relative displacement between the valve assembly and the pusher, thereby opening the fluid passage with the plug.

[0009] In some embodiments, the housing includes a bottom shell and a cover, the cover is disposed on the bottom shell, the air inlet is disposed at the end of the bottom shell away from the cover, the consumption port is disposed on the cover, and the inner wall of the cover is provided with a rotating shaft, and a rotating component is rotatably sleeved 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; 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 guide rod is fixed to the cover, and the multiple guide rods are spaced apart; 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 the inner wall of the rotating member with an air inlet is provided with a guide post. One end of the spring is sleeved on the guide post and abuts against the inner wall of the rotating member, and the other end abuts against the inner wall of the pushing member.

[0013] To solve the above-mentioned technical problems, another technical solution adopted in this application embodiment is: to provide a pneumatic comfort system, including an air source, multiple air bags and the above-mentioned gas switching valve, wherein 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-mentioned technical problems, another technical solution adopted in this application embodiment is: to provide a massage method based on the above-mentioned pneumatic comfort system, wherein the method controls the air source to open and close alternately at a predetermined time interval, so that each air bag is alternately inflated or deflated in a preset order.

[0015] The beneficial effects of this application embodiment are as follows: Unlike the prior art, in this application embodiment, an air inlet is provided at one end of the housing, and multiple consumption ports are provided circumferentially at the other end. The pusher is slidably and sealed to the inner wall of the housing. The inner wall of the housing near the air inlet and the end face of the pusher form a variable-volume air inlet chamber, which communicates with the air inlet. A rotating member is rotatably disposed within the housing, and the rotating member and the pusher also form a valve chamber. The rotating member is provided with an air inlet communicating with the valve chamber and an air vent communicating with the external environment. 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. In the valve assembly of the air intake chamber, when the pressure difference between the intake chamber and the valve chamber is greater than a threshold, the pusher moves from the first position to the second position, simultaneously driving the rotating component to rotate. This causes one of the consumption ports to switch from being connected to the inflation port to being connected to the deflation slot, while another adjacent consumption port is connected to the inflation port. When the pressure difference between the intake chamber and the valve chamber is less than the threshold, the pusher resets axially to the first position under the action of the reset component, and the inflation port remains connected to the same consumption port, and the deflation slot remains connected to the same consumption port. This allows for the control of inflation and deflation of multiple air bags without the need for multiple valves, which helps save costs and space.

[0016] Furthermore, unlike solenoid valve assemblies, this gas switching valve does not require large circuit boards or metal components. The valve body does not generate excessive heat during operation, ensuring stable system operation. Moreover, unlike the valve core of a solenoid valve which produces noticeable impact noise during switching, the valve body in this application uses sliding or rotating mechanisms, resulting in excellent noise reduction. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. 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 to scale.

[0018] Figure 1 This is a schematic diagram of the gas switching valve provided in the embodiments of this application from a first-view perspective;

[0019] Figure 2 This is an exploded structural diagram of the gas switching valve provided in the embodiments of this application;

[0020] Figure 3 This is a schematic diagram of the gas switching valve provided in the embodiments of this application from a second perspective;

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

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

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

[0024] Figure 7 This is a schematic diagram of the aerodynamic comfort system provided in the embodiments of this application.

[0025] Attached icon number

[0026] 1000, Pneumatic comfort system; 100, Gas switching valve; 10, Housing;

[0027] 1. Bottom shell; 11. Receiving cavity; 111. Inlet chamber; 112. Valve chamber; 12. Inlet;

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

[0029] 3. Rotating component; 31. Inflation port; 32. Venting groove; 33. Guide groove; 34. Rotation hole; 35. Guide post;

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

[0031] 5. Reset component;

[0032] 6. Guide rod;

[0033] 200. Connecting pipes;

[0034] F, First axis; Detailed Implementation

[0035] To facilitate understanding of this application, a more detailed description is provided below with reference to 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 the other element, or one or more intermediate elements may exist between them. When an element is described as "connected" to another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "upper," "lower," "inner," "outer," "vertical," "horizontal," etc., used in this specification indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

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

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

[0038] Please see 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 within the housing 10, the rotating member 3 is rotatably disposed within the housing 10, and the reset member 5 is disposed within the housing 10.

[0039] For the housing 10 described above, please refer to... Figures 1 to 4 The housing 10 includes a bottom shell 1 and a cover 2. The cover 2 is disposed at one end of the bottom shell 1. The cover 2 and the bottom shell 1 together enclose a receiving cavity 11. The aforementioned rotating member 3, pushing member 4 and resetting member 5 are all housed in the receiving cavity 11.

[0040] The bottom shell 1 described above is roughly cylindrical; please refer to [link / reference]. Figures 1 to 4The bottom shell 1 is provided with an air inlet 12. One end of the air inlet 12 is connected to the outside, and the other end is connected to the receiving cavity 11. The air inlet 12 is used to connect to an air source (not shown) so that the air source can fill the receiving cavity 11 with air through the air inlet 12. The cover 2 is installed at the end of the bottom shell 1 away from the air inlet 12. The pusher 4 is housed in the receiving cavity 11 and is sealed to the side wall of the receiving cavity 11. The pusher 4 can reciprocate within the receiving cavity 11 along a first direction X, which is parallel to the axis of the receiving cavity 11. The pusher 4 divides the receiving cavity 11 into an air intake chamber 111 and a valve chamber 112. The air intake chamber 111 is connected to the air inlet 12, and the volumes of the air intake chamber 111 and the valve chamber 112 change accordingly with the movement of the pusher 4. The rotating member 3 is housed within the receiving cavity 11 and can rotate relative to the bottom shell 1 about a first axis F, wherein the first axis F coincides with the axis of the receiving cavity 11. The rotating member 3 abuts against the surface of the cover 2 facing the air inlet 12, and the rotating member 3 is connected to the pushing member 4. When the pushing member 4 slides along the first direction X, the pushing member 4 can drive the rotating member 3 to rotate relative to the cover 2 about the first axis F. The air inlet chamber 111 is formed by the portion of the inner wall of the bottom shell 1 near the air inlet 12 and the end face of the pushing member 3, and the valve chamber 112 is formed by the portion of the inner wall of the housing 10, the pushing member 3, and the rotating member 4.

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

[0042] For the rotating component 3 mentioned above, please refer to... Figure 2 and Figure 6 The rotating component 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 component 3 is provided with an inflation port 31 and a venting 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 connect to the aforementioned consumption port 22. The venting groove 32 is provided on the side of the rotating component 3 facing the consumption port 22. The venting groove 32 is connected to the outside and is used to connect to the consumption port 22 to discharge the gas in the air bag. Specifically, when the rotating component 3 rotates relative to the cover 2 about the first axis F, so that the inflation port 31 is connected to one consumption port 22 on the cover 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 venting groove 32 is connected to the other consumption port 22 to discharge the gas in the air bag connected to the venting groove 32. For ease of description, please refer to the reference. Figure 1and Figure 2 The aforementioned multiple consumption ports 22 are sequentially labeled as 22a, 22b, 22c, 22d, etc. Please refer to... Figure 6 When the rotating component 3 rotates to the point where 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 venting groove 32 so that the air bag corresponding to the consumption port 22a can exhaust gas to the external environment through the venting groove 32. When the rotating component 3 continues to rotate, the inflation port 31 can be connected to the next consumption port 22c, and the venting groove 32 can be connected to the previous consumption port 22b, thereby venting the previous inflated air bag, and thus realizing the control of the inflation and deflation of multiple air bags. In other words, after the rotating component 3 rotates one revolution, each of the aforementioned consumption ports (22a, 22b, 22c, 22d...) connects to the inflation port 31 once, thereby inflating each air bag once; at the same time, each of the consumption ports (22a, 22b, 22c, 22d...) connects to the venting groove 32 once, thereby venting each air bag once; by rotating the rotating component 3, the air bags that are inflated and vented are switched, eliminating the need for multiple valve bodies for control, thereby reducing costs and minimizing size.

[0043] For the aforementioned 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 within the receiving cavity 11 between a preset first position and a preset second position, wherein the second position is closer to the cover 2 than the first position. Figure 4 A cross-sectional view of the gas switching valve 100 is shown when the pusher 4 is in the first position. Figure 5 and Figure 6A cross-sectional view of the gas switching valve 100 is shown when the actuator 4 is in the second position. The actuator 4 is provided with a fluid passage 41 and a valve assembly 42. The fluid passage 41 connects the intake chamber 111 and the valve chamber 112. The valve assembly 42 is slidably disposed in the fluid passage 41 and is used to open or close the fluid passage 41. When valve assembly 42 is open, fluid channel 41 is open, connecting air inlet chamber 111 and valve chamber 112. At this time, gas generated by the gas source can sequentially pass through air inlet 12, air inlet chamber 111, fluid channel 41, valve chamber 112, inflation port 31, and consumption port 22 connected to inflation port 31, filling the air bag. When valve assembly 42 is closed, fluid channel 41 is closed. If the gas source fills air into air inlet chamber 111 at this time, the air pressure in air inlet chamber 111 can be greater than the air pressure in valve chamber 112. When the air pressure difference between air inlet chamber 111 and valve chamber 112 exceeds a threshold, the pusher 4 moves closer to cover 2 along the first direction X. When the pusher 4 moves to the second position, if... Figure 5 and Figure 6 As shown, valve assembly 42 is open. At this time, the gas generated by the gas source can pass through the air inlet 12, air inlet chamber 111, fluid channel 41, valve chamber 112 and air filling port 31 in sequence and then enter the consumption port 22 connected to the air filling port 31, and finally enter the gas bag connected to the consumption port 22.

[0044] In some embodiments, please refer to Figure 2 The pushing member 4 is connected to the rotating member 3. When the pushing member 4 slides along the first direction X within the receiving cavity 11, it drives the rotating member 3 to rotate around the first axis F, thereby switching the consumption port 22 connected to the inflation port 31, thus allowing the gas source to inflate different air bags. In this embodiment, the rotating member 3 is rotated by the pushing member 4, and the rotation of the rotating member 3 switches the consumption port 22 connected to the inflation port 31, thereby switching the inflated air bag; at the same time, the consumption port 22 connected to the venting groove 32 is switched, thereby switching the vented air bag. This allows one gas switching valve 100 to control the inflation and deflation of multiple air bags, eliminating the need for multiple valves to control the inflation and deflation of multiple air bags, thus saving costs and reducing the space occupied by the valve assembly. In addition, the gas switching valve 100 in this embodiment differs from the solenoid valve assembly, eliminating the need for large circuit boards and metal components. The valve body does not generate a large amount of heat during operation, keeping the system running smoothly. Furthermore, unlike the valve core of a solenoid valve which produces a noticeable impact sound during switching, the entire valve body in this embodiment uses sliding or rotating mechanisms, resulting in excellent noise reduction.

[0045] In some embodiments, please refer to Figure 2 and Figure 6When viewed along the first direction X, multiple consumption ports 22 are distributed in a circular pattern around the first axis F, and the distance between any two adjacent consumption ports 22 is the same. This allows the rotating component 3 to switch the consumption port 22 connected to the inflation port 31 during its rotation around the first axis F, thereby controlling the inflation and deflation of multiple air bags.

[0046] It is worth noting that during the process of the pusher 4 sliding from the first position to the second position, the air inlet 31 of the rotating member 3 remains connected to the same consumption port 22, and the air vent 32 also remains connected to the same consumption port 22. Furthermore, during the process of the pusher 4 sliding from the second position to the first position, the consumption port 22 connected to the air inlet 31 is switched, and the consumption port 22 connected to the air vent 32 is also switched.

[0047] In some embodiments, please refer to Figure 2 The pusher 4 is provided with a push rod 43, one end of which is fixed to the inner wall of the pusher 4, and the other end extends toward the axis of the receiving cavity 11. The outer wall of the rotating member 3 is provided with a guide groove 33, and at least part of the push rod 43 is received in the guide groove 33, so that when the pusher 4 slides in the receiving cavity 11 along the first direction X, the rotating member 3 rotates relative to the cover 2 under the cooperation of the push rod 43 and the guide groove 33, thereby switching the consumption port 22 connected to the inflation port 31 and 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 in a roughly wavy shape on the outer wall of the rotating member 3, and the two ends of the guide groove 33 are connected together. This allows the rotating member 3 to rotate continuously in the same direction while the pushing member 4 reciprocates along the first direction X. That is, when the rotating member 3 rotates one revolution, each consumption port 22 connects to the inflation port 31 once, and each consumption port 22 also connects to the deflation groove 32 once, thereby controlling the inflation and deflation of each air bag. In this embodiment, by setting the guide groove 33 in a wavy shape, 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, thereby switching the inflated air bag. At the same time, the consumption port 22 connected to the deflation groove 32 can be switched, thereby switching the deflated air bag, which is very convenient.

[0049] In some embodiments, there are multiple push rods 43. One end of each push rod 43 is fixed to the inner wall of the pusher 4, and the other end extends toward the axis of the receiving cavity 11. When viewed along the first direction X, the multiple push rods 43 are distributed in a circumferentially spaced manner around the axis of the receiving cavity 11. Each push rod 43 is at least partially housed in the guide groove 33. When the pusher 4 reciprocates along the first direction X, the multiple push rods 43 cooperate with the guide groove 33 to drive the rotating member 3 to rotate, thereby switching the consumption port 22 connected to the inflation port 31 and the consumption port 22 connected to the venting 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, please refer to Figure 4 and Figure 5 The valve assembly 42 includes a pin 421 and a plug 422. The pin 421 passes through the pusher 4 along a first direction X and is slidable relative to the pusher 4 along the first direction X. The 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 plug 422 is used to open or close the fluid passage 41. When the air source fills the air intake chamber 111 with air through the air inlet 12, the pusher 4 moves from the first position to the second position. When the pusher 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, it continues to fill the air intake chamber 111 with air. This allows the pusher 4 to continue sliding a distance along the first direction X to the second position. At this time, the ejector pin 421 pushes open the air plug 422, thereby creating a gap between the air plug 422 and the fluid channel 41, and opening the fluid channel 41. At this time, the gas in the air intake chamber 111 can flow from the fluid channel 41 into the valve chamber 112, and then through the air inlet 31 and the consumption port 22 connected to the air inlet 31 into the air bag. In this embodiment, by setting a push pin 421 and an air plug 422, when the pusher 4 slides to the second position, the push pin 421 pushes the air plug 422 open, so that the air plug 422 is separated from the fluid channel 41, thereby connecting the air inlet chamber 111 and the valve chamber 112. The structure is simple and the operation is convenient.

[0051] In some embodiments, please refer to Figure 4 and Figure 5The fluid channel 41 includes a sliding hole 411 and a vent hole 412. A push pin 421 is slidably disposed in the sliding hole 411, and the push pin 421 at least partially protrudes from the sliding hole 411 and extends into the valve chamber 112. The vent hole 412 is spaced apart from the sliding hole 411, and the vent hole 412 constitutes the main channel for fluid communication between the air intake chamber 111 and the valve chamber 112. An 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 push pin 421 pushes open the air plug 422, so that the air plug 422 is separated from the vent hole 412, thereby opening the vent hole 412, and the gas in the air intake chamber 111 can flow into the valve chamber 112 through the vent hole 412.

[0052] In some embodiments, please refer to 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 interval 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, please refer to Figure 2 , Figure 4 and Figure 5 The reset element 5 is a spring, positioned between the pusher 4 and the rotating element 3. One end of the reset element 5 abuts against the pusher 4, and the other end abuts against the rotating element 3. The reset element 5 is used to keep the pusher 4 in the first position. Specifically, when the air source stops injecting airflow into the intake chamber 111, the pressure difference between the intake chamber 111 and the valve chamber 112 gradually decreases. When the pressure difference between the intake chamber 111 and the valve chamber 112 decreases to less than a threshold, the pusher 4 moves from the second position to the first position under the action of the reset element 5, and finally stops at the first position. At this time, when the air source injects gas into the intake chamber 111, the air pressure in the intake chamber 111 gradually increases, and the pressure difference between the intake chamber 111 and the valve chamber 112 gradually increases, causing the air plug 422 to gradually approach the fluid channel 41 until the air plug 422 abuts against the pusher 4 and blocks the fluid channel 41 (e.g., Figure 4 (As shown); after the air plug 422 blocks the fluid passage 41, the air source continues to inject gas into the intake chamber 111, thereby increasing the pressure difference between the intake chamber 111 and the valve chamber 112. When the pressure difference exceeds a threshold, the pusher 4 breaks through the elastic force of the reset member 5 and slides towards the cover 2; please refer to Figure 5 and Figure 6When the pusher 4 moves to the second position, the ejector pin 421 pushes open the air plug 422, creating a gap between the air plug 422 and the fluid channel 41. This allows gas in the intake chamber 111 to flow into the valve chamber 112 through the fluid channel 41. During the movement of the pusher 4 from the first position to the second position, the push rod 43 slides along the guide groove 33 of the rotating member 3, thereby rotating the rotating member 3 and switching the consumption port 22 connected to the inflation port 31. When the pusher 4 moves to the second position, please refer to... Figure 6 The inflation port 31 is connected to the consumption port 22 so that the gas generated by the gas source can enter the gas 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. After the air bag is fully inflated, the gas source can be controlled to stop generating gas. At this time, under the action of the reset member 5, the pusher 4 slides from the second position to the first position. At the same time, under the combined 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 the consumption port 22 connected to the venting groove 32. When the pusher 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. Then the pusher 4 moves from the first position to the second position and switches the consumption port 22 connected to the inflation port 31 and the consumption port 22 connected to the venting groove 32, thereby inflating and venting other air bags. In this embodiment, by setting a reset member 5, when the air source is working, the push member 4 can move from the first position to the second position. The push member 4 drives the rotating member 3 to rotate via the push rod 43, thereby switching the consumption port 22 connected to the inflation port 31, and thus switching the air bag for inflation. When the air source stops working, the reset member 5 can drive the push member 4 to move from the second position to the first position. At the same time, the push member 4 drives the rotating member 3 to continue rotating via the push rod 43, so as to switch the consumption port 22 connected to the inflation port 31. That is to say, by controlling the air source to inflate or stop inflating the air inlet chamber 111, the consumption port 22 connected to the inflation port 31 and the consumption port 22 connected to the venting groove 32 can be switched, thereby achieving the effect of controlling the inflation or deflation of multiple air bags. The operation is convenient and easy to control.

[0054] It is worth noting that among all the consumption ports 22 mentioned above, two adjacent consumption ports 22 are unused (i.e., not connected to the air bags). For example, if 10 consumption ports are set, generally 8 air bags are set to correspond to 8 consumption ports, and the remaining 2 consumption ports are unused and set adjacent to each other. The 2 unused consumption ports serve as the stop position. In this way, by continuously turning the air pump on and off, the air bags can be alternately inflated and deflated in sequence. When it is necessary to release the gas in all the air bags, rotate the pump so that both the inflation port and the deflation slot are connected to the consumption ports, and then turn off the air pump.

[0055] In some embodiments, the inner wall of the rotating member 3 with an air inlet 31 is provided with a guide post 35, 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 pusher 4.

[0056] It is worth noting that during the process of the pusher 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 intake chamber 111 and the valve chamber 112 so that when the air source fills the air intake chamber 111 with gas, it can drive the pusher 4 to move, thereby driving the rotating part 3 to rotate. Therefore, when the pusher 4 is in the first position, the air inlet 31 needs to be connected to the consumption port 22 to ensure that the gas in the valve chamber 112 can flow to the unfilled air bag. Otherwise, if the air inlet 31 is closed, the gas in the valve chamber 112 cannot flow and the pusher 4 will be stuck. On the other hand, after the air bag is continuously filled and discharged, the pressure difference between the air intake chamber 111 and the valve chamber 112 will fluctuate. Different pressure differences will cause the position of the pusher 4 to be uncertain. That is to say, during the process of the pusher 4 going back and forth once, the rotation angle of the rotating part 3 will fluctuate within a certain range, which may easily lead to the situation that when the pusher 4 is hovering, the air inlet 31 is not connected to the consumption port 22.

[0057] To resolve the above issues, please refer to [link / reference]. 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 approximately waist-shaped. With this configuration, as the air pressure inside the air bag continuously increases, the pressure difference between the intake chamber 111 and the valve chamber 112 also continuously fluctuates. This could cause the pusher 4 to hover at any position between the second and first positions. Please refer to the reference... Figure 6 By designing the inflation port 31 as a waist shape, it can be ensured that the inflation port 31 is always open during this process, thereby keeping the inflation port 31 connected to the same consumption port 22, facilitating the flow of gas in the valve chamber 112 to the air bag and reducing the risk of the pusher 4 getting stuck. In addition, during a single start-up of the air source, even if the position of the pusher 4 fluctuates, it can be ensured that the inflation port 31 is connected to the same consumption port 22, ensuring that the gas generated by the air source can be filled into the same air bag.

[0058] In some embodiments, please refer to Figure 2 In the circumferential direction around the first axis F, the length of the venting groove 32 is greater than the length of the consumption port 22, so that the venting groove 32 is approximately waist-shaped. Similarly, with this configuration, even if the position of the pusher 4 fluctuates within a certain range, it can be ensured that the venting groove 32 is connected to a consumption port 22, thereby venting the gas in the air bag connected to the consumption port 22.

[0059] In some embodiments, please refer to Figure 4 The cover 2 is provided with a rotating shaft 21, at least a portion of which is housed within the receiving cavity 11. The rotating member 3 is provided with a rotating hole 34, into which the rotating shaft 21 is inserted, and the rotating member 3 can rotate around the rotating shaft 21.

[0060] In some embodiments, please refer to Figure 2 The gas switching valve 100 includes a guide rod 6, one end of which is fixed to the cover 2, and the other end extends into the receiving cavity 11 along a first direction X. The pusher 4 is provided with a guide hole 44, at least a portion of the guide rod 6 is received in the guide hole 44, and the guide rod 6 can slide along the guide hole 44. The guide rod 6 is used to guide the movement direction of the pusher 4, thereby improving the smoothness of the movement of the pusher 4.

[0061] In some embodiments, there are multiple guide rods 6, one end of which is fixed to the cover 2, and the other end of which extends into the receiving cavity 11 along the first direction X. The multiple guide rods 6 are parallel to each other. The pusher 4 is provided with multiple guide holes 44 as described above. A guide rod 6 is inserted into a guide hole 44, and a guide rod 6 can slide along a 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 this embodiment, an air inlet 12 is provided at one end of the housing 10, and multiple consumption ports 22 are provided circumferentially at the other end. The pusher 4 is slidably and sealed to the inner wall of the housing 10. The inner wall of the housing 10 near the air inlet 12 and the end face of the pusher 4 form a variable-volume air intake chamber 111, which is connected to the air inlet 12. The rotating member 3 is rotatably disposed inside the housing 10, and the rotating member 3 and the pusher 4 also form a valve chamber 112. The rotating member 3 is provided with an air inlet 31 communicating with the valve chamber 112 and an air vent 32 communicating with the external environment. A fluid channel 41 for connecting the valve chamber 112 and the air intake chamber 111 and a valve assembly for opening or closing the fluid channel 41 are provided on the pusher 4. 42. When the pressure difference between the intake chamber 111 and the valve chamber 112 is greater than the threshold, the pusher 4 moves from the first position to the second position, and at the same time drives the rotating part 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 venting groove 32, and the other adjacent consumption port 22 is connected to the inflation port 31. When the pressure difference between the intake chamber 111 and the valve chamber 112 is less than the threshold, the pusher 4 is reset axially to the first position under the action of the reset part 5, and the inflation port 31 remains connected to the same consumption port 22, and the venting groove 32 remains connected to the same consumption port 22, thereby realizing the control of inflation and deflation of multiple air bags without the need to set multiple valves, which is beneficial to saving costs and space.

[0063] Furthermore, unlike solenoid valve assemblies, this gas switching valve 100 does not require large circuit boards or metal components. During operation, the valve body does not generate excessive heat, ensuring stable system operation. Moreover, unlike the valve core of a solenoid valve which produces noticeable impact noise during switching, the valve body in this application uses sliding or rotating mechanisms, resulting in excellent noise reduction.

[0064] This application also provides 1000 embodiments of a pneumatic comfort system; please refer to [link / reference]. Figure 7 The pneumatic comfort system 1000 includes an air source, multiple air bags, and the aforementioned gas switching valve 100. Each air bag is connected to a consumption port 22. The air source is connected to an air inlet 12 and is used to generate gas, which then passes through a receiving cavity 11, an inflation port 31, and a consumption port 22 before being injected into the air bags. The pneumatic comfort system 1000 can control the inflation and deflation of each air bag to create an undulating effect, thereby achieving the purpose of massaging the human body.

[0065] In some embodiments, please refer to Figure 7The pneumatic comfort system 1000 includes multiple connecting pipes 200, each corresponding to a single consumption port 22. One end of each connecting pipe 200 is connected to a consumption port 22, and the other end is connected to an air bag, allowing gas in the receiving cavity 11 to sequentially pass through the inflation port 31, the consumption port 22, and the connecting pipes 200 before entering the air bag. The connecting pipes 200 facilitate the arrangement of the air bags, enabling massage of the human body.

[0066] This application also provides a massage method applied to the above-mentioned pneumatic comfort system 1000, wherein the method involves controlling an air source to alternately open and close at predetermined time intervals, so that each air bag is alternately inflated or deflated in a preset sequence.

[0067] Specifically, the method includes:

[0068] Step S1: Inflate the air inlet chamber 111 with air source so that the pusher 4 slides along the receiving chamber 11. At the same time, the pusher 4 drives the rotating part 3 to rotate relative to the cover 2 so as to switch the consumption port 22 connected to the air inlet 31 and the consumption port 22 connected to the venting groove 32.

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

[0070] Step S3: Control the air source to stop filling the air intake chamber 111 with air, pusher 4 slides from the second position to the first position, and under the drive of pusher 4, rotating part 3 rotates;

[0071] Repeat steps S1 to S3.

[0072] In this embodiment, by switching between inflatable and deflatable air bags, an undulating effect is created, thereby massaging the human body. The effect of switching inflatable air bags can be achieved simply by controlling the inflation and de-inflation of the air source, making the control process simple.

[0073] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A gas switching valve characterized by, The gas switching valve comprises a shell, a pushing member, a rotating member and a reset member arranged inside the shell, one end of the shell is provided with an air inlet, the other end is provided with a plurality of consumption ports in the circumferential direction, the inner wall of the shell is in sliding sealing connection with the pushing member, the part of the inner wall of the shell near the air inlet and the end face of the pushing member enclose a variable volume air inlet chamber, the air inlet is in communication with the air inlet chamber, the pushing member is in transmission connection with the rotating member, so that when the pushing member moves along the axial direction of the rotating member, the rotating member can be driven to rotate in the circumferential direction according to the preset direction. The rotating member and the pushing member further enclose a valve chamber, the end of the rotating member is provided with a charging port in communication with the valve chamber and a gas discharge groove in communication with 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 is switched from being in communication with the charging port to being in communication with the gas discharge groove, and the other adjacent consumption port is in communication with the charging 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 along the axial direction under the action of the reset member, and the charging port remains in communication with the same consumption port, and the gas discharge groove remains in communication with the same consumption port. The pushing member is provided with a fluid channel for communicating 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 pushing member is in the first position, and opens the fluid channel at least when the pushing member is in the second position.

2. The gas switching valve according to claim 1, wherein The inner wall of the pushing member is provided with a push rod; The outer side wall of the rotating member is provided with a guide groove, at least part 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 guide groove in the same direction to drive the rotating member to rotate in the same direction relative to the shell.

3. The gas switching valve according to claim 2, wherein The number of push rods is multiple, and the multiple push rods are distributed in the circumferential direction.

4. The gas switching valve according to claim 1, wherein The valve assembly comprises a plunger and a gas plug, the plunger is movably arranged in the fluid channel, the gas plug is fixed to one end of the plunger in the air inlet chamber, the other end of the plunger protrudes from the pushing member to extend into the valve chamber, when the pushing member is in the first position, the gas plug closes the fluid channel; when the pushing member is in the second position, the other end of the plunger abuts against the rotating member, so that the valve assembly and the pushing member are relatively displaced and the gas plug opens the fluid channel.

5. The gas switching valve according to claim 1, wherein ​ The shell comprises a bottom shell and a cover, the cover is arranged on the bottom shell, the air inlet is arranged at one end of the bottom shell away from the cover, the consumption port is arranged on the cover, the inner wall of the cover is provided with a rotating shaft, and the rotating member is rotatably sleeved on the rotating shaft.

6. The gas switching valve according to claim 5, wherein, The gas switching valve further comprises a guide rod, one end of the guide rod is fixed to the cover; The push member is provided with a guide hole, and at least part of the guide rod is movably inserted into the guide hole.

7. The gas switching valve according to claim 6, wherein, The number of the guide rods is multiple, one end of each of the multiple guide rods is fixed to the cover, and the multiple guide rods are distributed at intervals; The push member is provided with multiple guide holes, one guide rod is inserted into one guide hole, and one guide rod can slide along one guide hole.

8. The gas selector valve according to any one of claims 1 to 7, characterized in that The reset member is a spring, the inner wall of one end of the rotating member provided with the air inlet is provided with a guide column, 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 of the spring abuts against the inner wall of the push member.

9. A pneumatic comfort system characterized in that, The gas switching valve comprises a gas source, multiple gas bags and any one of the gas switching valves according to claims 1-8, the gas source is communicated with the air inlet, and the gas bags are communicated with the consumption ports one by one.

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