Air pressure adjusting device, air pressure massager and control method of air pressure massager

Abstract

The application discloses a gas pressure adjusting device, a gas pressure massage instrument and a control method of the gas pressure massage instrument. The gas pressure adjusting device comprises a base body, an air inlet channel and a plurality of air cavities are arranged in the base body, each air cavity is communicated with an openable and closable air inlet cavity body, the air inlet cavity body is communicated with an air bag connecting pipeline, and the air cavity is communicated with the air inlet channel at a position not communicated with the air inlet cavity body; a one-way valve is arranged at the connection position of each air cavity and the air inlet channel, and the one-way valve is opened in the direction from the air cavity to the air inlet channel; and an openable and closable air inlet of the air inlet channel and an openable and closable first exhaust channel are further communicated with the air inlet channel. The gas pressure adjusting device is used for maintaining the pressure of the air bag connected with the air bag connecting pipeline on the gas pressure adjusting device, air is filled into the air inlet channel of the gas pressure adjusting device to form a pressure difference between the inside and outside of the one-way valve, the air inlet cavity body communicated with the air bag connecting pipeline is closed, the gas in the air bag cannot flow and backflow is avoided, and the pressure maintenance of the air bag is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of massage equipment, and particularly relates to an air pressure adjusting device, an air pressure massage instrument and a control method of the air pressure massage instrument. BACKGROUND

[0002] The air pressure massage instrument is a device for massaging human body limbs and muscle tissues through the inflation and deflation of air bags. The air pressure massage instrument is usually equipped with multiple air bags, each of which is inflated by a gas pump. An electromagnetic valve is arranged between each air bag and an inflation channel and a deflation channel to control the opening and closing of the air path. The opening and closing of the electromagnetic valve is controlled by the control system of the air pressure massage instrument. At present, as shown in Figure 1 、 Figure 2 and Figure 3 , the air bag pipeline 910 and the gas pump inflation channel 920 and the air bag deflation channel 930 of the air pressure massage instrument in the prior art are integrated three-way channels; the electromagnetic valve 940 is a two-position three-way electromagnetic valve, and the air bag 800 is in a deflation state when the electromagnetic valve 940 is closed and is in an inflation state when the electromagnetic valve 940 is opened; wherein the air bag 800 is sequentially provided with a first air bag 801, a second air bag 802, a third air bag 803, a fourth air bag 804 and a fifth air bag 805 from the far end to the near end, and the corresponding electromagnetic valve 940 is sequentially provided with a first electromagnetic valve 941, a second electromagnetic valve 942, a third electromagnetic valve 943, a fourth electromagnetic valve 944 and a fifth electromagnetic valve 945.

[0003] The existing air pressure massage instrument generally has two control modes of "step by step and cumulative" mode and "step by step and divided" mode. Both of the two control modes sequentially inflate each air bag from the far end to the near end in sequence to realize the compression massage of the limbs and accelerate the circulation of venous blood from the far end to the near end. In the "step by step and cumulative" mode, as shown in Figures 1 to 3As shown, the gas pump first fills the far end air bag, i.e. the first air bag 801, with gas and maintains the pressure; then fills the second air bag 802 with gas and maintains the pressure; then fills the third air bag 803, the fourth air bag 804, and the fifth air bag 805 at the near end with gas in turn; after all the air bags are filled with gas, they are simultaneously deflated; then the inflation and deflation are repeated in a reciprocating cycle, so as to realize the compression massage of the massage part, which helps to circulate the venous blood from the far end to the near end. In the "step-by-step" mode, when the subsequent air bags are inflated, the high-pressure gas in the air bag that has completed the inflation work will flow back into the air bag that is being inflated, so that the air in the inflated air bag and the air in the air bag being inflated form a gas string. The formation of the gas string phenomenon not only reduces the air pressure in the inflated air bag, but also produces noise; at the same time, due to the reduction of the air pressure in the inflated air bag, the control difficulty of the air bag inflation and deflation is increased, and the control accuracy of the air bag inflation and deflation is reduced; obviously, the gas pressure massage instrument appears the gas string phenomenon, which will adversely affect the massage work of the gas pressure massage instrument, and ultimately affect the massage experience of the user.

[0004] At present, in order to avoid the above-mentioned gas string problem, the gas pressure massage instrument can only adopt the "step-by-step" control mode. In the "step-by-step" mode, the previous far end air bag is inflated and then deflated, and then the next near end air bag is inflated, and then the inflation and deflation steps are repeated in a reciprocating cycle. In the "step-by-step" mode, only the electromagnetic valve corresponding to the air bag that needs to be inflated is opened and all other air bag corresponding electromagnetic valves are closed, and then the air bag inflation needs to be from the state of no pre-charging force pressure to the set pressure each time, the inflation time is long, which leads to a reduction in the number of massage cycles in the same time, and the power consumption is serious. SUMMARY

[0005] The present application aims to solve the problem of gas string between air bags of the gas pressure massage instrument in the prior art and the long air bag inflation time

[0006] To solve the above technical problems, the technical solution adopted by the present application is: a gas pressure adjusting device, comprising a base body, a pressure maintaining channel and a plurality of three-way cavities are arranged in the base body, each three-way cavity is communicated with an openable and closable flow guide cavity, the flow guide cavity is communicated with an air bag connecting pipeline, the port of the three-way cavity not communicated with the flow guide cavity is communicated with the pressure maintaining channel; a one-way valve is arranged at the connection between each three-way cavity and the pressure maintaining channel, and the one-way valve is opened in the direction from the three-way cavity to the pressure maintaining channel; a pressure maintaining channel gas inlet and a first exhaust channel are further communicated with the pressure maintaining channel.

[0007] Further, a first exhaust electromagnetic valve and an air cavity electromagnetic valve corresponding to each three-way cavity are arranged on the base body; the first exhaust electromagnetic valve controls the opening and closing of the first exhaust channel, and the air cavity electromagnetic valve controls the opening and closing of the flow guide cavity communicated with the corresponding three-way cavity.

[0008] Further, the base body comprises a middle frame and a lower seat, a plurality of three-way cavities are arranged in the lower seat along the length direction of the lower seat, a plurality of flow guide cavities are arranged in the middle frame along the length direction of the middle frame, and the flow guide cavities are located above the corresponding three-way cavities; the air cavity electromagnetic valve is fixed at the bottom of the lower seat, the piston end of the air cavity electromagnetic valve penetrates through the corresponding three-way cavity and extends into the flow guide cavity above, and the piston end of the air cavity electromagnetic valve is in sealing cooperation with each communication part of the flow guide cavity; the middle frame is detachably connected to the top of the lower seat, and the middle frame is provided with an air inlet and exhaust passage which is communicated between the flow guide cavity and the air bag connecting pipeline.

[0009] Further, the lower seat is further provided with an exhaust passage corresponding to the three-way cavity, the exhaust passage is communicated between the pressure maintaining passage and the corresponding three-way cavity, the one-way valve is arranged at the communication part of the exhaust passage and the pressure maintaining passage, and the one-way valve is opened in the direction from the exhaust passage to the pressure maintaining passage.

[0010] Further, the air bag connecting pipeline is a conical pipeline vertically arranged on the middle frame, and the outer diameter of the air bag connecting pipeline at the end communicated with the air inlet and exhaust passage is larger than the outer diameter of the other end.

[0011] Further, the base body further comprises a one-way valve fixing plate, the one-way valve fixing plate is detachably connected to the side of the lower seat, the one-way valve fixing plate is provided with a first mounting half cavity corresponding to the one-way valve, the lower seat is provided with a second mounting half cavity corresponding to the one-way valve, the second mounting half cavity is communicated with the corresponding three-way cavity, and the first mounting half cavity and the second mounting half cavity are in butt joint to form a cavity accommodating the corresponding one-way valve.

[0012] Further, the base body further comprises a sealing side cover plate, the one-way valve fixing plate is provided with a pressure maintaining passage groove extending along the length direction of the one-way valve fixing plate, and the pressure maintaining passage groove is communicated with each first mounting half cavity; the sealing side cover plate is detachably connected to the side of the one-way valve fixing plate which is not connected to the lower seat, the sealing side cover plate covers the pressure maintaining passage groove and is in sealing cooperation with the pressure maintaining passage groove to form the pressure maintaining passage.

[0013] Further, the base body is further provided with an air path passage and a second exhaust cavity which can be opened and closed; the air path passage is provided with an air path passage air inlet, the air path passage is communicated with the flow guide cavities of each three-way cavity, the second exhaust cavity is communicated with the air path passage, and the second exhaust cavity is communicated with a second exhaust passage at the part not communicated with the air path passage.

[0014] Further, it further comprises a second exhaust electromagnetic valve, the second exhaust electromagnetic valve controls the opening and closing of the second exhaust cavity, the second exhaust electromagnetic valve is fixed at the bottom of the lower seat, the piston end of the second exhaust electromagnetic valve extends into the second exhaust cavity and is in sealing cooperation with each communication part of the second exhaust cavity.

[0015] Further, the base further comprises an upper cover, one side of the upper cover is provided with a gas path channel groove extending along the length direction of the upper cover, the upper cover is detachably connected to the middle frame, and the gas path channel groove is in communication with the second exhaust cavity and the flow guide cavities of the respective three-way cavities, one side of the middle frame connected to the upper cover is in sealing cooperation with the gas path channel groove to form a gas path channel.

[0016] Further, the upper cover is further provided with a corresponding hole for the air bag connecting pipeline, and the air bag connecting pipeline passes through the corresponding hole in the upper cover.

[0017] Further, the base further comprises a base extension part, the base extension part is composed of an upper cover extension part, a middle frame extension part and a lower seat extension part, the middle frame extension part is detachably connected between the upper cover extension part and the lower seat extension part, and the base extension part is fixed at one end of the base; the pressure maintaining channel air inlet is arranged on the upper cover extension part, the first exhaust channel is arranged on the lower seat extension part, the first exhaust cavity in communication with the pressure maintaining channel air inlet and the first exhaust channel is arranged in the middle frame, and the first exhaust cavity is formed by extending the pressure maintaining channel into the middle frame.

[0018] Further, the first exhaust electromagnetic valve is fixed at the bottom of the lower seat extension part, the piston end of the first exhaust electromagnetic valve extends into the first exhaust cavity and forms a sealing cooperation with each communication part of the first exhaust cavity.

[0019] Further, it further comprises an air inlet check valve, the air inlet check valve is arranged at the pressure maintaining channel air inlet; the air inlet check valve controls the opening and closing of the pressure maintaining channel air inlet, and the air inlet check valve opens in the direction from the outside of the pressure maintaining channel air inlet to the first exhaust cavity.

[0020] Further, the upper cover extension part and the upper cover are in an integrated structure, the middle frame extension part and the middle frame are in an integrated structure, and the lower seat extension part and the lower seat are in an integrated structure.

[0021] Further, the first exhaust electromagnetic valve, the second exhaust electromagnetic valve and the air cavity electromagnetic valve are all normally closed electromagnetic valves.

[0022] Further, the piston end of the first exhaust electromagnetic valve, the second exhaust electromagnetic valve and the air cavity electromagnetic valve is provided with a sealing cap.

[0023] Further, the sealing cap is a silica gel sealing cap.

[0024] The application further discloses the air pressure massage instrument, and the air pressure adjustment device is arranged in the air source.

[0025] Further, the air pressure adjustment device further comprises a three-way joint, an inlet end of the three-way joint is communicated with the air source, and two outlet ends of the three-way joint are respectively communicated with the first air charging channel and the second air charging channel.

[0026] Further, the air pressure adjustment device further comprises a pressure sensor, and the pressure sensor is arranged between the air source and the three-way joint.

[0027] Further, the air pressure adjustment device further comprises a pressure sensor, and the pressure sensor is arranged between the air source and the three-way joint.

[0028] The application further discloses a control method of the air pressure massage instrument, and one action or a combination of at least two actions of pre-charging pressure maintaining, pressure maintaining massage, pressure equalizing and pressure regulating and automatic pressure releasing of the air pressure massage instrument are realized by selectively opening and closing the pressure maintaining channel, the three-way cavity and the flow guide cavity.

[0029] Further, in the pre-charging pressure maintaining action, the air source directly charges the pressure maintaining channel in the air pressure adjustment device, the pressure in the pressure maintaining channel is increased to make the pressure maintaining channel closed to maintain the air pressure in the pressure maintaining channel.

[0030] Further, in the pressure maintaining massage action, the pre-charging pressure maintaining action is performed first to make the pressure maintaining channel closed, the air source charges each air bag separately, and the air pressure in each air bag is maintained by the pressure maintaining channel.

[0031] Further, in the pressure equalizing and pressure regulating action, the pre-charging pressure maintaining action is performed first to make the pressure maintaining channel closed, and the air pressure in each air bag is changed by separately releasing the air in the air bag.

[0032] Further, in the power-off automatic pressure releasing action, the pressure maintaining channel is automatically opened after all the electromagnetic valves are powered off, each air bag is released and exhausts through the pressure maintaining channel.

[0033] The application has the beneficial effects that:

[0034] 1. This invention uses a pressure regulating device to maintain pressure on the airbag connected to the airbag connecting pipe on the pressure regulating device. Inflation can be made into the pressure maintaining channel of the pressure regulating device to create a pressure difference between the inside and outside of the one-way valve, thereby keeping the one-way valve closed and sealing the guide cavity connected to the airbag connecting pipe. The gas inside the airbag cannot flow and will not backflow, thus achieving pressure maintenance of the airbag. This solves the problem of air leakage between the inflated and uninflated airbags during the airbag inflation process, ensuring the smooth inflation of the airbag and shortening the inflation time.

[0035] 2. This invention achieves the closure of the airbag exhaust channel through the cooperation of the air chamber solenoid valve and the one-way valve. By inflating the pressure-maintaining channel of the air pressure adjustment device, a pressure difference is created on both sides of the one-way valve to ensure that the one-way valve is in the closed state. The airbag exhaust channel can only be opened when the air chamber solenoid valve is energized. This achieves the effect of preventing the airbag from deflating when the air chamber solenoid valve is de-energized and closed. Thus, while maintaining the pressure of the airbag, the power consumption of the solenoid valve is reduced, resulting in a good energy-saving effect.

[0036] 3. This invention achieves automatic closure of the pressure-holding channel within the air pressure regulating device by setting an air intake one-way valve. By inflating the pressure-holding channel of the air pressure regulating device, a pressure difference is created on both sides of the air intake one-way valve. When the air pressure inside the pressure-holding channel is greater than the air pressure outside the air intake one-way valve, the air intake one-way valve automatically closes, sealing the pressure-holding channel. This prevents the gas inside the pressure-holding channel from escaping, thus achieving the effect of maintaining pressure inside the pressure-holding channel. This keeps the air pressure outside the one-way valve constant, achieving continuous pressure holding of the airbag.

[0037] 4. This invention prevents airbag deflation by using the combination of an air chamber solenoid valve and a one-way valve. After all airbags are inflated, the air pressure inside the airbag remains unchanged, thus avoiding the need for re-inflation due to airbag deflation. This effectively saves airbag inflation time and reduces power consumption.

[0038] 5. This invention can selectively inflate and deflate the airbags by controlling the opening and closing of the solenoid valves of each air chamber and the second exhaust solenoid valve. This allows for individual adjustment of the pressure in each airbag. The air pressure massager can adjust the different airbags to have different massage pressures according to the different massage areas, or adjust the air pressure in different airbags to be consistent, making the massage more targeted and providing a better massage experience for the user.

[0039] 6. The solenoid valve in this invention closes after power failure. After power failure, the air pressure massager can open the pressure-holding channel of the air pressure adjustment device to release pressure by de-energizing and closing the first exhaust solenoid valve and the air chamber solenoid valve. This allows the gas in the airbag to open the one-way valve and release pressure, realizing automatic degassing of all airbags after power failure. This avoids the situation where the airbags of the air pressure massager continue to squeeze the user's limbs after power failure, eliminating safety hazards and providing safety for massage work.

[0040] 7. By solving the problem of air leakage between inflated and uninflated airbags during the airbag inflation process, this invention avoids noise problems caused by air leakage, provides users with a quiet massage environment, and effectively improves the user's massage experience when using the air pressure massager.

[0041] 8. By maintaining the pressure inside the inflated airbag, this invention keeps the internal pressure of the airbag consistent with the preset pressure, effectively reducing the difficulty of controlling the inflation and deflation of the airbag, thereby improving the control accuracy of the inflation and deflation of the airbag and ensuring the stability of the air pressure massager. Attached Figure Description

[0042] Figure 1 This is a cross-sectional schematic diagram of a pneumatic massager in the prior art;

[0043] Figure 2 When the existing air pressure massager is in the deflated state Figure 1 Sectional view at point AA;

[0044] Figure 3 When the existing air pressure massager is in the inflated state Figure 1 Sectional view at point AA.

[0045] Figure 4 This is a front axonometric view of the air pressure adjustment device in this invention;

[0046] Figure 5 This is an isometric view of the rear of the air pressure regulating device in this invention;

[0047] Figure 6 This is an exploded view of the air pressure adjustment device in this invention;

[0048] Figure 7 This is a longitudinal sectional view of the air pressure adjustment device in this invention;

[0049] Figure 8 This is a cross-sectional schematic diagram of the air pressure massager in the present invention in its uninflated state;

[0050] Figure 9 for Figure 8 A transverse sectional view of the medium-pressure regulating device, where AA is...Figure 8 Cross-sectional view at A-A;

[0051] Figure 10 For Figure 8 Cross-sectional view at B-B;

[0052] Figure 11 For the air pressure massage instrument in the present application, the cross-sectional view of pre-charging air to the air pressure adjusting device by the air source for pressure maintenance;

[0053] Figure 12 For Figure 11 Cross-sectional view of the air pressure adjusting device, where A-A is Figure 11 Cross-sectional view at A-A;

[0054] Figure 13 For the air pressure massage instrument in the present application, the cross-sectional view of pre-charging air to the air pressure adjusting device by the air source for pressure maintenance;

[0055] Figure 14 For Figure 13 Cross-sectional view of the air pressure adjusting device, where A-A is Figure 13 Cross-sectional view at A-A;

[0056] Figure 15 For the air pressure massage instrument in the present application, the cross-sectional view of pre-charging air to the air pressure adjusting device by the air source for pressure maintenance;

[0057] Figure 16 For Figure 15 Cross-sectional view of the air pressure adjusting device, where A-A is Figure 15 Cross-sectional view at A-A;

[0058] Figure 17 For the air pressure massage instrument in the present application, the cross-sectional view of pre-charging air to the air pressure adjusting device by the air source for pressure maintenance;

[0059] Figure 18 For Figure 17 Cross-sectional view of the air pressure adjusting device, where A-A is Figure 17 Cross-sectional view at A-A;

[0060] Figure 19 For the air pressure massage instrument in the present application, the cross-sectional view of pre-charging air to the air pressure adjusting device by the air source for pressure maintenance;

[0061] Figure 20 For Figure 19 Cross-sectional view of the air pressure adjusting device, where A-A is Figure 19 Cross-sectional view at A-A;

[0062] Figure 21It is the sectional view schematic drawing that the air pressure massage instrument in the application is inflated to the fifth air bag by the gas source in the pressure maintaining state;

[0063] Figure 22 It is the sectional view schematic drawing that the air pressure massage instrument in the application is inflated to the fifth air bag by the gas source in the pressure maintaining state; Figure 21 The transverse sectional view of the air pressure adjusting device, wherein A-A is the sectional view of Figure 21 The sectional view of A-A in the air pressure adjusting device;

[0064] Figure 23 It is the sectional view schematic drawing that the air pressure massage instrument in the application is inflated to the fifth air bag by the gas source in the pressure maintaining state;

[0065] Figure 24 It is the sectional view schematic drawing that the air pressure massage instrument in the application is inflated to the fifth air bag by the gas source in the pressure maintaining state; Figure 23 The transverse sectional view of the air pressure adjusting device, wherein A-A is the sectional view of Figure 23 The sectional view of A-A in the air pressure adjusting device;

[0066] Figure 25 It is the sectional view schematic drawing that the air pressure massage instrument in the application is inflated to the fifth air bag by the gas source in the pressure maintaining state;

[0067] Figure 26 It is the sectional view schematic drawing that the air pressure massage instrument in the application is inflated to the fifth air bag by the gas source in the pressure maintaining state; Figure 25 The transverse sectional view of the air pressure adjusting device, wherein A-A is the sectional view of Figure 25 The sectional view of A-A in the air pressure adjusting device;

[0068] Figure 27 It is the sectional view schematic drawing that the air pressure massage instrument in the application is inflated to the fifth air bag by the gas source in the pressure maintaining state;

[0069] Figure 28 It is the sectional view schematic drawing that the air pressure massage instrument in the application is inflated to the fifth air bag by the gas source in the pressure maintaining state; Figure 25 The transverse sectional view of the air pressure adjusting device, wherein A-A is the sectional view of Figure 25 The sectional view of A-A in the air pressure adjusting device;

[0070] Figure 29 It is the sectional view schematic drawing that the air pressure massage instrument in the application is inflated to the fifth air bag by the gas source in the pressure maintaining state;

[0071] Figure 30 It is the sectional view schematic drawing that the air pressure massage instrument in the application is inflated to the fifth air bag by the gas source in the pressure maintaining state; Figure 29 The transverse sectional view of the air pressure adjusting device, wherein A-A is the sectional view of Figure 29 The sectional view of A-A in the air pressure adjusting device;

[0072] Figure 31 It is the sectional view schematic drawing that the air pressure massage instrument in the application is inflated to the fifth air bag by the gas source in the pressure maintaining state;

[0073] Figure 32 It is the sectional view schematic drawing that the air pressure massage instrument in the application is inflated to the fifth air bag by the gas source in the pressure maintaining state; Figure 31 The transverse sectional view of the air pressure adjusting device, wherein A-A is the sectional view of Figure 31 The sectional view of A-A in the air pressure adjusting device;

[0074] Figure 33It is a cross section view schematic diagram of the air pressure massage instrument in the application.

[0075] Figure 34 It is Figure 33 The lateral cross section view of the air pressure adjusting device, wherein A-A is Figure 33 The cross section view of A-A.

[0076] In the figure, the marks are: 100-base body, 110-lower seat, 120-middle frame, 130-inlet and exhaust passage, 140-exhaust passage, 150-upper cover, 151-positioning hole, 160-one-way valve fixing plate, 161-first installation half cavity, 162-second installation half cavity, 163-pressure maintaining passage groove, 170-sealing side cover plate, 180-air path passage, 181-air path passage air inlet, 190-second exhaust cavity, 191-second exhaust passage, 192-second exhaust electromagnetic valve, 200-pressure maintaining passage, 210-pressure maintaining passage air inlet, 220-first exhaust passage, 230-first exhaust electromagnetic valve, 240-inlet one-way valve, 300-three-way cavity, 310-flow guide cavity, 320-one-way valve, 400-air bag connecting pipeline, 500-air cavity electromagnetic valve, 600-base body extension, 610-upper cover extension, 620-middle frame extension, 630-lower seat extension, 631-first exhaust cavity, 700-air source, 710-first inflation passage, 720-second inflation passage, 730-three-way joint, 740-pressure sensor, 800-air bag, 810-connecting pipe;

[0077] 301-first three-way cavity, 302-second three-way cavity, 303-third three-way cavity, 304-fourth three-way cavity, 305-fifth three-way cavity;

[0078] 311-first flow guide cavity, 312-second flow guide cavity, 313-third flow guide cavity, 314-fourth flow guide cavity, 315-fifth flow guide cavity;

[0079] 321-first one-way valve, 322-second one-way valve, 323-third one-way valve, 324-fourth one-way valve, 325-fifth one-way valve;

[0080] 401-first air bag connecting pipeline, 402-second air bag connecting pipeline, 403-third air bag connecting pipeline, 404-fourth air bag connecting pipeline, 405-fifth air bag connecting pipeline;

[0081] 501-first air cavity electromagnetic valve, 502-second air cavity electromagnetic valve, 503-third air cavity electromagnetic valve, 504-fourth air cavity electromagnetic valve, 505-fifth air cavity electromagnetic valve;

[0082] 801-first air bag, 802-second air bag, 803-third air bag, 804-fourth air bag, 805-fifth air bag;

[0083] 910-air bag pipeline, 920-air pump inflation passage, 930-air bag deflation passage, 940-solenoid valve, 941-first solenoid valve, 942-second solenoid valve, 943-third solenoid valve, 944-fourth solenoid valve, 945-fifth solenoid valve. DETAILED DESCRIPTION

[0084] In order to facilitate the understanding of the present application, the present application will be further described below in conjunction with the accompanying drawings.

[0085] In the description of the present application, it should be noted that the terms "front", "back", "left", "right", "up", "down", "inner", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description, and do not indicate or imply that the devices or components referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0086] As Figures 4 to 10 shown, the main structure of the air pressure adjusting device disclosed in the embodiment is a base body 100, and a pressure maintaining passage 200 and a three-way cavity 300 are arranged inside the base body 100. The pressure maintaining passage 200 can serve as a gas passage of the air pressure adjusting device, and a pressure maintaining passage air inlet 210 and a first exhaust passage 220 are arranged on the pressure maintaining passage 200, both of which can be opened and closed. The pressure maintaining passage 200 can be connected in communication with a gas source through the pressure maintaining passage air inlet 210, and the gas source can deliver gas into the pressure maintaining passage 200 through the pressure maintaining passage air inlet 210. The pressure maintaining passage 200 can be exhausted through the first exhaust passage 220. A flow guide cavity 310 corresponding to each three-way cavity 300 is arranged inside the base body 100, the flow guide cavity 310 is in communication with the corresponding three-way cavity 300, and the flow guide cavity 310 is in communication with an air bag connecting pipeline 400 fixed on the base body 100, and the flow guide cavity 310 can also be opened and closed. The air bag connecting pipeline 400 is used to connect with an air bag in a pneumatic massage instrument or connect with other devices with similar air bag structure. The positions of the flow guide cavity 310 and the pressure maintaining passage 200 connected to the three-way cavity 300 are different, for example, the pressure maintaining passage 200 is in communication with the lower part of the three-way cavity 300, and the flow guide cavity 310 is in communication with the upper part of the three-way cavity 300. Figure 10

[0087] ​The important part of the air pressure adjusting device disclosed in the embodiment for maintaining the pressure of the air bag 800 is the one-way valve 320 arranged at the connection between each three-way cavity 300 and the pressure maintaining channel 200, which limits the opening direction of the one-way valve 320 from the three-way cavity 300 to the pressure maintaining channel 200. The principle of maintaining the pressure in the embodiment is as follows: the pressure maintaining channel 200 is filled with air from the air source, and the air pressure in the pressure maintaining channel 200 increases continuously. Due to the limitation of the opening direction of the one-way valve 320, the air can only flow from the three-way cavity 300 to the pressure maintaining channel 200 through the one-way valve 320 and cannot flow from the pressure maintaining channel 200 to the three-way cavity 300 through the one-way valve 320. Therefore, the one-way valve 320 is pressed closed by the high-pressure air, and the air pressure in the pressure maintaining channel 200 continuously rises until the pressure maintaining channel air inlet 210 is closed when the air pressure reaches the preset value. The high-pressure air in the pressure maintaining channel 200 cannot be discharged to maintain a stable air pressure value. At this time, only when the air pressure value in the three-way cavity 300 is greater than the air pressure value in the pressure maintaining channel 200, the one-way valve 320 can be opened. As long as the pressure value in the pressure maintaining channel 200 is set to be greater than the maximum air pressure value in the three-way cavity 300, the three-way cavity 300 is closed after the three-way cavity 300 is connected to the air bag 800 through the air bag connecting pipeline 400, and the air pressure values in the air bag 800 and the three-way cavity 300 remain stable without actively opening the pressure maintaining channel 200 for exhaust pressure relief, and finally the effect of pre-charging and pressure maintaining is achieved.

[0088] As described above, the flow guide cavity 310 and the first exhaust channel 220 in the embodiment can be opened and closed. Specifically, the opening and closing of the flow guide cavity 310 and the first exhaust channel 220 are controlled by electromagnetic valves. The opening and closing of the flow guide cavity 310 are controlled by the air cavity electromagnetic valve 500, and the opening and closing of the first exhaust channel 220 are controlled by the first exhaust electromagnetic valve 230. The number of air cavity electromagnetic valves 500 is consistent with the number of flow guide cavities 310 and one-to-one correspondence. The air cavity electromagnetic valve 500 and the first exhaust electromagnetic valve 230 are both installed on the base body 100.

[0089] As Figures 4 to 10As shown, the base body 100 used by the air pressure adjusting device in the embodiment includes a lower seat 110 and a middle frame 120. The lower seat 110 is the fixed position of the air cavity electromagnetic valve 500 and the first exhaust electromagnetic valve 230, and a plurality of three-way cavities 300 are arranged along the length direction of the lower seat 110 and arranged inside the lower seat 110. The middle frame 120 is detachably fixed on the top of the lower seat 110, and the assembly between the middle frame 120 and the lower seat 110 can be achieved by various existing connection methods such as fastener connection, buckle structure connection, etc. A plurality of flow guide cavities 310 are arranged along the length direction of the middle frame 120 and arranged inside the middle frame 120. After the assembly of the lower seat 110 and the middle frame 120, the flow guide cavities 310 are located above the corresponding three-way cavities 300 and communicate with the corresponding three-way cavities 300. As a preferred scheme, the three-way cavities 300 in the embodiment can be used to install the air cavity electromagnetic valve 500, the valve seat top of the air cavity electromagnetic valve 500 is fixed in the corresponding three-way cavity 300, the piston end of the air cavity electromagnetic valve 500 penetrates through the corresponding three-way cavity 300 and extends into the flow guide cavity 310 above, the air cavity electromagnetic valve 500 realizes the opening and closing of the flow guide cavity 310 through the lifting of the piston end, and the size of the piston end of the air cavity electromagnetic valve 500 is greater than the hole diameter of the connection between the flow guide cavity 310 and the three-way cavity 300. Therefore, when the piston end of the air cavity electromagnetic valve 500 is lowered to the connection between the flow guide cavity 310 and the three-way cavity 300, the flow guide cavity 310 and the three-way cavity 300 can be isolated, and the gas flow between the flow guide cavity 310 and the three-way cavity 300 cannot be conducted. In addition, the air inlet and exhaust passage 130 is also arranged inside the middle frame 120, which is used to realize the communication between the flow guide cavity 310 and the air bag connecting pipeline 400, and the air inlet and exhaust passage 130 and the flow guide cavity 310 have a one-to-one correspondence relationship; the air bag connecting pipeline 400 is fixed on the top surface of the middle frame 120, and the bottom of the air bag connecting pipeline 400 extends into the middle frame 120 and communicates with the corresponding air inlet and exhaust passage 130. The air bag connecting pipeline 400 is used to connect the air pressure adjusting device and the air bag 800 in the air pressure massager. In order to facilitate the connection between the air bag connecting pipeline 400 and the air bag 800, a conical pipeline can be used as the air bag connecting pipeline 400, and the outer diameter of the end of the air bag connecting pipeline 400 connected with the air inlet and exhaust passage 130 is limited to be greater than the outer diameter of the other end. Therefore, the connection between the air bag connecting pipeline 400 and the air bag 800 can be quickly and conveniently realized by clamping.

[0090] As Figure 9 and Figure 10As shown, the communication between the three-way cavity 300 and the pressure maintaining channel 200 in the embodiment relies on the exhaust channel 140 arranged in the lower seat 110, the exhaust channel 140 has a one-to-one correspondence with the three-way cavity 300, the exhaust channel 140 is arranged between the corresponding three-way cavity 300 and the pressure maintaining channel 200, and the one-way valve 32 is arranged at the connection between the exhaust channel 140 and the pressure maintaining channel 200. The one-way valve 320 opens from the direction of the exhaust channel 140 to the direction of the pressure maintaining channel 200, that is, the gas can flow from the exhaust channel 140 to the pressure maintaining channel 200 through the one-way valve 320, but cannot flow from the pressure maintaining channel 200 to the exhaust channel 140 through the one-way valve 320.

[0091] As shown in Figure 5 and Figure 6 To achieve the installation of the one-way valve 320, the base body 100 of the air pressure adjusting device in the embodiment further includes a one-way valve fixing plate 160, which can be detachably connected to the side of the lower seat 110 through fastener connection or buckle structure connection and the like. A plurality of first mounting half cavities 161 are fixed on the one-way valve fixing plate 160, and a plurality of second mounting half cavities 162 corresponding to the first mounting half cavities 161 are fixed on the side of the lower seat 110. The second mounting half cavities 162 are communicated with the corresponding three-way cavities 300 in the lower seat 110 through the exhaust channels 140. After the one-way valve fixing plate 160 is assembled with the lower seat 110, the first mounting half cavities 161 and the second mounting half cavities 162 are docked to form a cavity accommodating the one-way valve 320. Here, the one-way valve 320 adopts a single-plate clamping type check valve, which is opened in one direction by the pressure of the gas on the one-way valve 320 to achieve the opening of the one-way valve 320.

[0092] The pressure maintaining channel 200 in the embodiment is formed by assembling the sealing side cover plate 170 and the one-way valve fixing plate 160 arranged on the base body 100, as shown in Figure 5 and Figure 6 A pressure maintaining channel groove 163 extending along the length direction of the one-way valve fixing plate 160 is arranged on the one-way valve fixing plate 160, and the pressure maintaining channel groove 163 is communicated with each first mounting half cavity 161 on the one-way valve fixing plate 160. The sealing side cover plate 170 is connected to the side of the one-way valve fixing plate 160 which is not connected with the lower seat 110, and the pressure maintaining channel groove 163 is completely covered and sealed by the sealing side cover plate 170. Then, the pressure maintaining channel groove 163 cooperates with the sealing side cover plate 170 to form the pressure maintaining channel 200.

[0093] After the air pressure adjusting device is assembled with the air pressure massage instrument, in order to simplify the structure and save the occupied space, the inflation channel and the exhaust channel of the air bag 800 are integrated on the air pressure adjusting device in the embodiment. As shown in Figures 7 to 9As shown, the gas passage 180 and the second exhaust cavity 190 are arranged on the base 100. The gas passage 180 is provided with a gas passage inlet 181 for communicating with a gas source to inflate. The gas passage 180 communicates with the flow guide cavities 310 of the three-way cavities 300, and the second exhaust cavity 190 communicates with the gas passage 180. The second exhaust cavity 190 is further provided with a second exhaust passage 191 which does not communicate with the gas passage 180. The second exhaust cavity 190 is openable and closable. When the second exhaust cavity 190 is opened, the second exhaust cavity 190 communicates with the gas passage 180, and the gas in the air bag 800 can enter the second exhaust cavity 190 through the gas passage 180 and be discharged through the second exhaust passage 191, so as to deflate the air bag 800. At this time, the gas passage 180 can be used as an exhaust passage. When the second exhaust cavity 190 is closed, the second exhaust cavity 190 is isolated from the gas passage 180, and the gas in the gas passage 180 cannot enter the second exhaust cavity 190. At this time, the gas passage 180 can only be used as an inflation passage. By arranging the gas passage 180, the second exhaust cavity 190 and the second exhaust passage 191, the air bag 800 can be deflated selectively, so as to adjust the air pressure in the air bag 800.

[0094] As described above, the opening and closing principle of the flow guide cavity 310 is the same as that of the second exhaust electromagnetic valve 192 which is used to control the opening and closing of the second exhaust cavity 190 in the embodiment. Figure 6 and Figure 7 As shown, the second exhaust electromagnetic valve 192 is fixed on the bottom of the lower seat 110, and the piston end of the second exhaust electromagnetic valve 192 extends into the second exhaust cavity 190. The second exhaust electromagnetic valve 192 opens and closes the second exhaust cavity 190 by lifting the piston end. The size of the piston end of the second exhaust electromagnetic valve 192 is greater than the aperture of the connection between the second exhaust cavity 190 and the gas passage 180. When the piston end of the second exhaust electromagnetic valve 192 rises to the connection between the second exhaust cavity 190 and the gas passage 180, the second exhaust cavity 190 is isolated from the gas passage 180, and the second exhaust cavity 190 is closed. At this time, the second exhaust cavity 190 and the gas passage 180 cannot communicate with each other. When the piston end of the second exhaust electromagnetic valve 192 is lowered, the piston end of the second exhaust electromagnetic valve 192 no longer isolates the second exhaust cavity 190 from the gas passage 180, and the second exhaust cavity 190 is opened. At this time, the gas in the gas passage 180 can enter the second exhaust cavity 190, and can be discharged through the second exhaust passage 191.

[0095] Specifically, as shown in Figures 4 to 10As shown, the air path channel 180 in the embodiment is assembled by the upper cover 150 and the middle frame 120 arranged on the base body 100. One side of the upper cover 150 is provided with an air path channel groove extending along the length direction of the upper cover 150. The side of the upper cover 150 provided with the air path channel groove is connected to the top surface of the middle frame 120, so that the air path channel groove is in communication with the second exhaust cavity 190 and each flow guide cavity 310. The middle frame 120 completely covers and seals the air path channel groove on the upper cover 150. The side of the middle frame 120 connected to the upper cover 150 is in sealing cooperation with the air path channel groove to form the air path channel 180.

[0096] As shown in Figures 4 to 6 , the air bag connecting pipeline 400 is fixed on the top surface of the middle frame 120. The upper cover 150 can be provided with a clearance hole 151 to accommodate the air bag connecting pipeline 400. The clearance hole 151 corresponds to the air bag connecting pipeline 400 one by one. The air bag connecting pipeline 400 passes through the corresponding clearance hole 151 on the upper cover 150.

[0097] As shown in Figure 4 , Figure 8 and Figure 9As shown, the pressure maintaining passage air inlet 210, the first exhaust passage 220 and the first exhaust electromagnetic valve 230 are arranged at one end of the base 100 by extending the base extension 600. The base extension 600 is composed of the upper cover extension 610, the middle frame extension 620 and the lower seat extension 630, and the middle frame extension 620 is detachably connected between the upper cover extension 610 and the lower seat extension 630 by a connecting mode such as fastener connection or buckle structure connection. The pressure maintaining passage air inlet 210 is arranged in the upper cover extension 610, and the first exhaust cavity 631 which communicates with the pressure maintaining passage air inlet 210 and the first exhaust passage 220 is arranged in the middle frame extension 620 and formed by extending the pressure maintaining passage 200 into the middle frame extension 620. In the embodiment, the first exhaust electromagnetic valve 230 is used to control the opening and closing of the first exhaust passage 220, and the first exhaust electromagnetic valve 230 is fixed at the bottom of the lower seat extension 630 and the piston end of the first exhaust electromagnetic valve 230 extends into the first exhaust cavity 631. Since the first exhaust passage 220 communicates with the first exhaust cavity 631, the first exhaust electromagnetic valve 230 can realize the opening and closing of the first exhaust passage 220 by the lifting of the piston end. The size of the piston end of the first exhaust electromagnetic valve 230 is greater than the hole diameter of the connecting position of the first exhaust passage 220 and the first exhaust cavity 631, and when the piston end of the first exhaust electromagnetic valve 230 is lowered to the connecting position of the first exhaust passage 220 and the first exhaust cavity 631, the first exhaust passage 220 is isolated from the first exhaust cavity 631, the first exhaust passage 220 is closed, and the pressure maintaining passage 200 which communicates with the first exhaust cavity 631 cannot flow gas with the first exhaust passage 220, so that the gas in the pressure maintaining passage 200 cannot be discharged through the first exhaust passage 220. When the piston end of the first exhaust electromagnetic valve 230 is lifted, the connecting position of the first exhaust passage 220 and the first exhaust cavity 631 is no longer closed by the piston end of the first exhaust electromagnetic valve 230, the first exhaust passage 220 is opened, and the gas in the pressure maintaining passage 200 can enter the first exhaust passage 220 through the first exhaust cavity 631 and be discharged through the first exhaust passage 220.

[0098] It is mentioned above that the pressure maintaining passage air inlet 210 in the embodiment can be opened and closed. Specifically, the opening and closing of the pressure maintaining passage air inlet 210 is realized by means of the air inlet one-way valve 240 arranged in the pressure maintaining passage air inlet 210. The air inlet one-way valve 240 controls the opening and closing of the pressure maintaining passage air inlet 210, and the air inlet one-way valve 240 opens from the outside of the pressure maintaining passage air inlet 210 to the direction of the first exhaust cavity 631. When the gas source delivers gas into the pressure maintaining passage 200 through the pressure maintaining passage air inlet 210, because the opening direction of the air inlet one-way valve 240 is limited, the gas can enter the first exhaust cavity 631 through the air inlet one-way valve 240 from the side of the pressure maintaining passage air inlet 210 connected with the gas source. As the gas pressure in the pressure maintaining passage 200 continuously increases, when the gas pressure value in the pressure maintaining passage 200 reaches the set value, the gas source is stopped to stop gas delivery, and then the air inlet one-way valve 240 is automatically closed under the pressure in the pressure maintaining passage 200 to realize the closing of the pressure maintaining passage air inlet 210. In combination with the common action of the one-way valve 320 and the first exhaust electromagnetic valve 230, the pressure maintaining passage 200 can be completely closed, the gas pressure in the pressure maintaining passage 200 is maintained unchanged, and thus the pressure maintaining effect is realized.

[0099] The base extension 600 can be in an integrated structure with the base 100 to simplify the overall structure of the gas pressure adjusting device and reduce the occupied space. That is, the upper cover extension 610 is in an integrated structure with the upper cover 150, the middle frame extension 620 is in an integrated structure with the middle frame 120, and the lower seat extension 630 is in an integrated structure with the lower seat 110.

[0100] In the embodiment, the first exhaust electromagnetic valve 230, the second exhaust electromagnetic valve 192, and the gas cavity electromagnetic valve 500 are all normally closed electromagnetic valves. When the normally closed electromagnetic valves are used, the electromagnetic valves are in an open state when powered on and in a closed state when powered off, so that all the gas in the air bags and the passages can be exhausted when powered off, and the power consumption of the electromagnetic valves can be effectively reduced to achieve the effect of energy saving and power saving.

[0101] Further, in order to improve the sealing effect of the electromagnetic valves on the cavities, a sealing cap can be arranged at the piston end of the first exhaust electromagnetic valve 230, the second exhaust electromagnetic valve 192, and the gas cavity electromagnetic valve 500. The sealing cap is preferably made of a silica gel sealing cap with good elasticity.

[0102] An embodiment of the gas pressure massage instrument including the above-mentioned gas pressure adjusting device is as follows: Figure 8 and Figure 9As shown, the air pressure massage instrument includes an air source 700 and a plurality of air bags 800, and the air bags 800 can be inflated by the air source 700 to expand. The base body 100 of the air pressure adjusting device can be directly installed on the original control assembly of the air pressure massage instrument, so as to integrate the air pressure adjusting device, the control assembly and the air source 700 together. The air bags 800 on the air pressure massage instrument correspond to the three-way cavities 300 in the air pressure adjusting device one by one, and the air bags 800 are connected with the corresponding air bag connecting pipelines 400. Since the air bags 800 and the air bag connecting pipelines 400 are not easy to connect, the connecting pipelines 810 can be used as the relay pipelines between the air bags 800 and the air bag connecting pipelines 400. The connecting pipelines 810 are preferably the connecting hoses, and the connecting hoses can be bent to reduce the occupied space during assembly. The air source 700 is in communication with the pressure maintaining passage air inlet 210 through the first inflation passage 710; the air source 700 is in communication with the air passage air passage air inlet 181 of the air passage 180 through the second inflation passage 720, so as to realize the communication between the air source 700 and the flow guide cavities 310 of the three-way cavities 300 in the air pressure adjusting device.

[0103] The air source 700 is generally a common air pump, and the number of the air source 700 can be two. The first inflation passage 710 and the second inflation passage 720 are respectively communicated with the two air sources 700. In order to simplify the structure and save costs, only one air source 700 can be used, and the three-way joint 730 is used to realize the communication of the air source 700 with the first inflation passage 710 and the second inflation passage 720 at the same time, that is, the inlet end of the three-way joint 730 is communicated with the outlet end of the air source 700, and the two outlet ends of the three-way joint 730 are respectively communicated with the inlet end of the first inflation passage 710 and the inlet end of the second inflation passage 720.

[0104] Since the control assembly of the air pressure massage instrument needs to control the opening and closing of each electromagnetic valve according to the air pressure value in each passage to perform the pressure maintaining, pressure equalizing or pressure releasing work of the air pressure adjusting device, in order to facilitate accurate monitoring of the air pressure value, a pressure sensor 740 is arranged between the air source 700 and the three-way joint 730 in the embodiment. The pressure sensor 740 is electrically connected with the control assembly of the air pressure massage instrument, and the pressure sensor 740 can transmit the monitored air pressure value data to the control assembly of the air pressure massage instrument.

[0105] In this embodiment, the air pressure massager has five airbags 800, including a first airbag 801, a second airbag 802, a third airbag 803, a fourth airbag 804, and a fifth airbag 805. Correspondingly, the number of three-way cavities 300, flow guide cavities 310, one-way valves 320, airbag connecting pipes 400, and air chamber solenoid valves 500 are all five. Specifically, the three-way cavities 300 include a first three-way cavity 301, a second three-way cavity 302, a third three-way cavity 303, a fourth three-way cavity 304, and a fifth three-way cavity 305; the flow guide cavities 310 include a first flow guide cavity 311, a second flow guide cavity 312, a third flow guide cavity 313, a fourth flow guide cavity 314, and a fifth flow guide cavity 315; and the one-way valves 320 include a first one-way valve 321, a second one-way valve 322, a third one-way valve 323, a fourth one-way valve 324, and a fifth one-way valve 500. Check valve 324 and fifth check valve 325; airbag connecting pipe 400 includes first airbag connecting pipe 401, second airbag connecting pipe 402, third airbag connecting pipe 403, fourth airbag connecting pipe 404 and fifth airbag connecting pipe 405; air chamber solenoid valve 500 includes first air chamber solenoid valve 501, second air chamber solenoid valve 502, third air chamber solenoid valve 503, fourth air chamber solenoid valve 504 and fifth air chamber solenoid valve 505.

[0106] The air pressure massager equipped with an air pressure adjustment device can perform functions such as pre-charging and pressure holding, pressure holding massage, pressure equalization and adjustment, and automatic pressure release upon power failure. Specific function descriptions are as follows:

[0107] 1) Pre-charge and pressure holding

[0108] like Figure 11 and Figure 12 As shown, the first air chamber solenoid valve 501, the second air chamber solenoid valve 502, the third air chamber solenoid valve 503, the fourth air chamber solenoid valve 504, the fifth air chamber solenoid valve 505, and the second exhaust solenoid valve 192 are all in the de-energized closed state. At this time, the first guide chamber 311, the second guide chamber 312, the third guide chamber 313, the fourth guide chamber 314, the fifth guide chamber 315, and the second exhaust chamber 190 are all isolated from the air passage 180.

[0109] The first exhaust solenoid valve 230 is opened and the gas source 700 is started. Since each gas cavity solenoid valve 500 closes the corresponding flow guide cavity 310, the gas source 700 cannot inflate each air bag 800 through the flow guide cavity 310. The gas source 700 sends gas to the air pressure adjusting device through the first inflation channel 710. Since the first exhaust solenoid valve 230 is in an open state, the first exhaust cavity 631 is in communication with the pressure maintaining channel gas inlet 210 while being isolated from the first exhaust channel 220. The gas can rush into the first exhaust cavity 631 through the one-way inlet valve 240 and then into the pressure maintaining channel 200. The gas then rushes to each one-way valve 320, which is closed under pressure. The pressure maintaining channel 200 is isolated from each three-way cavity 300 by the one-way valve 320, so gas cannot flow. The gas in the pressure maintaining channel 200 continues to inflate and pressurize. When the pressure sensor 740 monitors the pressure value in the pressure maintaining channel 200 and the pressure value rises to the preset pressure value Pa, the gas source 700 stops sending gas. At this time, there is a pressure difference on both sides of the one-way inlet valve 240, and the one-way inlet valve 240 is closed under pressure. The entire pressure maintaining channel 200 is closed, and the pressure value in the pressure maintaining channel 200 is maintained at Pa and does not change.

[0110] Through the above process, the first one-way valve 321, the second one-way valve 322, the third one-way valve 323, the fourth one-way valve 324, and the fifth one-way valve 325 are all in a closed state, and the pressure value in the pressure maintaining channel 200 reaches the preset Pa. As long as the maximum inflation pressure value Pb of the air bag 800 is less than the pressure value Pa in the pressure maintaining channel 200, the one-way valves 320 can be kept closed by the pressure difference. When the air bag 800 is subsequently inflated, the gas in the inflated air bag can also be prevented from flowing back without power to the gas cavity solenoid valve 500, thereby eliminating the occurrence of gas leakage and reducing the energy consumption of each solenoid valve.

[0111] 2) Pressure maintaining massage

[0112] For example, Figure 13 and Figure 14As shown, the first exhaust solenoid valve 230 is energized to keep open state to make the gas pressure adjusting device maintain the pressure maintaining state, the first gas cavity solenoid valve 501 is energized to open, the second gas cavity solenoid valve 502, the third gas cavity solenoid valve 503, the fourth gas cavity solenoid valve 504, the fifth gas cavity solenoid valve 505 and the second exhaust solenoid valve 192 are kept de-energized to close state. The starting gas source 700 sends gas into the gas path channel 180 through the second gas filling channel 720, and the gas enters the first flow cavity 311. Since the first gas cavity solenoid valve 501 is in an open state, the first flow cavity 311 and the first three-way cavity 301 are isolated and cannot pass gas, and the gas can only enter the first gas bag 801 through the first gas bag connecting pipeline 401 connected with the first flow cavity 311. When the pressure sensor 740 monitors that the gas pressure value Pb1 in the first flow cavity 311 reaches the maximum gas filling pressure value Pb of the gas bag, the gas source 700 stops filling, the first gas cavity solenoid valve 501 is de-energized to close, the first flow cavity 311 is isolated from the gas path channel 180, the first gas bag connecting pipeline 401 is connected with the first three-way cavity 301 through the first flow cavity 311, but since the gas pressure value Pa in the pressure maintaining channel 200 is greater than the gas pressure value Pb1 in the first flow cavity 311, the first one-way valve 321 cannot be opened, and the gas in the first gas bag 801 cannot flow, thereby realizing the pressure maintaining of the first gas bag 801.

[0113] Similarly, as shown in Figure 15 and Figure 16 , the second gas cavity solenoid valve 502 is energized to open, the first gas cavity solenoid valve 501, the third gas cavity solenoid valve 503, the fourth gas cavity solenoid valve 504, the fifth gas cavity solenoid valve 505 and the second exhaust solenoid valve 192 are kept de-energized to close state. The starting gas source 700 fills the second gas bag 802, and when the gas pressure value Pb2 in the second flow cavity 312 reaches the maximum gas filling pressure value Pb of the gas bag, the gas source 700 stops filling, and the gas pressure adjusting device maintains the pressure of the second gas bag 802.

[0114] Similarly, as shown in Figure 17 and Figure 18 , the third gas cavity solenoid valve 503 is energized to open, the first gas cavity solenoid valve 501, the second gas cavity solenoid valve 502, the fourth gas cavity solenoid valve 504, the fifth gas cavity solenoid valve 505 and the second exhaust solenoid valve 192 are kept de-energized to close state. The starting gas source 700 fills the third gas bag 803, and when the gas pressure value Pb3 in the third flow cavity 313 reaches the maximum gas filling pressure value Pb of the gas bag, the gas source 700 stops filling, and the gas pressure adjusting device maintains the pressure of the third gas bag 803.

[0115] Similarly, as shown in Figure 19 and Figure 20As shown, the fourth air chamber electromagnetic valve 504 is powered on to open, the first air chamber electromagnetic valve 501, the second air chamber electromagnetic valve 502, the third air chamber electromagnetic valve 503, the fifth air chamber electromagnetic valve 505 and the second exhaust electromagnetic valve 192 remain powered off to close. The gas source 700 inflates the fourth air bag 804, when the air pressure value Pb4 in the fourth flow guide chamber 314 reaches the maximum inflation air pressure value Pb of the air bag, the gas source 700 stops inflating, and the air pressure adjusting device maintains the pressure of the fourth air bag 804.

[0116] Similarly, as shown in Figure 21 and Figure 22 , the fifth air chamber electromagnetic valve 505 is powered on to open, the first air chamber electromagnetic valve 501, the second air chamber electromagnetic valve 502, the third air chamber electromagnetic valve 503, the fourth air chamber electromagnetic valve 504 and the second exhaust electromagnetic valve 192 remain powered off to close. The gas source 700 inflates the fifth air bag 805, when the air pressure value Pb5 in the fifth flow guide chamber 315 reaches the maximum inflation air pressure value Pb of the air bag, the gas source 700 stops inflating, and the air pressure adjusting device maintains the pressure of the fifth air bag 805.

[0117] When all the air bags 800 are inflated, all the air chamber electromagnetic valves 500 are powered off to close, and the power consumption of the electromagnetic valves is minimized. After inflation is completed, the limbs and muscle tissues can be pressed and massaged by the air bags 800.

[0118] In addition, different amounts of gas can be filled into different air bags 800 to make the air pressure values in each air bag 800 not equal, i.e. Pb1≠Pb2≠Pb3≠Pb4≠Pb5, as long as the air pressure values in each air bag 800 are less than the pressure maintaining air pressure value Pa in the pressure maintaining channel 200, the pressure maintaining state can be consistently maintained. Thus, each air bag 800 can have different degrees of expansion, and can press different massage parts with different forces, providing users with a better massage experience.

[0119] 3) Pressure equalization and pressure regulation

[0120] As shown in Figure 23 and Figure 24As shown, the first exhaust solenoid valve 230 is powered to keep open state to make the gas pressure adjusting device maintain the pressure maintaining state, and the gas source 700 stops charging. The first gas cavity solenoid valve 501 and the second exhaust solenoid valve 192 are powered to open, and the second gas cavity solenoid valve 502, the third gas cavity solenoid valve 503, the fourth gas cavity solenoid valve 504 and the fifth gas cavity solenoid valve 505 are kept in de-energized closed state. At this time, since the first gas cavity solenoid valve 501 is in open state, the gas in the first gas bag 801 can enter the first flow guiding cavity 311 through the first gas bag connecting pipeline 401, and since the first flow guiding cavity 311 is isolated from the first three-way cavity 301, but the first flow guiding cavity 311 is communicated with the gas path channel 180, the gas entering the first flow guiding cavity 311 can only enter the gas path channel 180. When the gas flows in the gas path channel 180, since all the gas cavity solenoid valves 500 except the first gas cavity solenoid valve 501 are in de-energized closed state, and the second exhaust solenoid valve 192 is in powered open state, the gas cannot enter other flow guiding cavities 310 but can only enter the second exhaust cavity 190 communicated with the gas path channel 180, and then can be discharged through the second exhaust channel 191, so that the gas pressure in the first gas bag 801 is reduced. When the pressure sensor 741 monitors that the gas pressure value in the first gas bag 801 is reduced to the required gas pressure value Pc1, the second exhaust solenoid valve 192 is de-energized to close, and the gas in the first gas bag 801 stops discharging and pressure relief. Through the above steps, the gas pressure value in the first gas bag 801 can be adjusted alone.

[0121] Similarly, as shown in Figure 25 and Figure 26 , the first exhaust solenoid valve 230 is powered to keep open state to make the gas pressure adjusting device maintain the pressure maintaining state, and the gas source 700 stops charging. The second gas cavity solenoid valve 502 and the second exhaust solenoid valve 192 are powered to open, and the first gas cavity solenoid valve 501, the third gas cavity solenoid valve 503, the fourth gas cavity solenoid valve 504 and the fifth gas cavity solenoid valve 505 are kept in de-energized closed state. The gas in the second gas bag 802 enters the second exhaust cavity 190, and then is discharged through the second exhaust channel 191, so that the gas pressure in the second gas bag 802 is reduced. When the pressure sensor 741 monitors that the gas pressure value in the second gas bag 802 is reduced to the required gas pressure value Pc2, the second exhaust solenoid valve 192 is de-energized to close, and the gas in the second gas bag 802 stops discharging and pressure relief. Through the above steps, the gas pressure value in the second gas bag 802 can be adjusted alone.

[0122] Similarly, as shown in Figure 27 and Figure 28As shown, the first exhaust solenoid valve 230 is energized and kept open to maintain the pressure of the air pressure regulating device, and the air source 700 stops inflating. The third air chamber solenoid valve 503 and the second exhaust solenoid valve 192 are energized and opened, while the first air chamber solenoid valve 501, the second air chamber solenoid valve 502, the fourth air chamber solenoid valve 504, and the fifth air chamber solenoid valve 505 remain de-energized and closed. The gas in the third airbag 803 enters the second exhaust chamber 190 and is then discharged through the second exhaust channel 191, reducing the air pressure in the third airbag 803. When the pressure sensor 741 detects that the air pressure in the third airbag 803 has dropped to the required air pressure value Pc3, the second exhaust solenoid valve 192 is de-energized and closed, and the gas in the third airbag 803 stops venting and releasing pressure. Through the above steps, the air pressure in the third airbag 803 can be adjusted independently.

[0123] Similarly, such as Figure 29 and Figure 30 As shown, the first exhaust solenoid valve 230 is energized and remains open to maintain the pressure of the air pressure regulating device, and the air source 700 stops inflating. The fourth air chamber solenoid valve 504 and the second exhaust solenoid valve 192 are energized and opened, while the first air chamber solenoid valve 501, the second air chamber solenoid valve 502, the third air chamber solenoid valve 503, and the fifth air chamber solenoid valve 505 remain de-energized and closed. Gas in the fourth airbag 804 enters the second exhaust chamber 190 and is then discharged through the second exhaust channel 191, reducing the air pressure in the fourth airbag 804. When the pressure sensor 741 detects that the air pressure in the fourth airbag 804 has decreased to the required air pressure value Pc4, the second exhaust solenoid valve 192 is de-energized and closed, and the gas in the fourth airbag 804 stops venting and releasing pressure. Through the above steps, the air pressure in the fourth airbag 804 can be adjusted independently.

[0124] Similarly, such as Figure 31 and Figure 32 As shown, the first exhaust solenoid valve 230 is energized and remains open to maintain the pressure of the air pressure regulating device, and the air source 700 stops inflating. The fifth air chamber solenoid valve 505 and the second exhaust solenoid valve 192 are energized and opened, while the first air chamber solenoid valve 501, the second air chamber solenoid valve 502, the third air chamber solenoid valve 503, and the fourth air chamber solenoid valve 504 remain de-energized and closed. Gas in the fifth airbag 805 enters the second exhaust chamber 190 and is then discharged through the second exhaust channel 191, reducing the air pressure in the fifth airbag 805. When the pressure sensor 741 detects that the air pressure in the fifth airbag 805 has dropped to the required air pressure value Pc5, the second exhaust solenoid valve 192 is de-energized and closed, and the gas in the fifth airbag 805 stops venting and releasing pressure. Through the above steps, the air pressure in the fifth airbag 805 can be adjusted independently.

[0125] Alternatively, pressure equalization can be achieved by depressurizing all airbags 800 to make the air pressure values ​​in all airbags 800 the same, i.e., Pb1=Pb2=Pb3=Pb4=Pb5.

[0126] 4) Automatic pressure relief upon power failure

[0127] like Figure 33 and Figure 34 As shown, all solenoid valves, including the first air chamber solenoid valve 501, the second air chamber solenoid valve 502, the third air chamber solenoid valve 503, the fourth air chamber solenoid valve 504, the fifth air chamber solenoid valve 505, the first exhaust solenoid valve 230, and the second exhaust solenoid valve 192, are de-energized, and the air source 700 is also de-energized and stops inflating. At this time, the pressure holding channel 200 is connected to the first exhaust chamber 631, and the pressure holding channel 200 is no longer closed. The gas in the pressure holding channel 200 is discharged through the first exhaust channel 230, thus reducing the air pressure in the pressure holding channel 200. When the air pressure in the pressure holding channel 200 drops to less than the air pressure in each three-way chamber 300, each one-way valve 320 is opened, and the gas in each airbag 800 passes through the corresponding one-way valve 320 into the exhaust channel 200, and finally is discharged through the first exhaust channel 230, thereby achieving depressurization of all airbags 800. With the automatic pressure relief function in the air pressure massager, all airbags 800 will deflate and release pressure after the air pressure massager encounters a power outage due to a malfunction, thus ensuring that the airbags 800 will not continuously compress the user's limbs and effectively improving the user's safety when using the air pressure massager.

[0128] Furthermore, the above four actions can be combined through different control logics. For example, pressure-holding massage, pressure equalization, and pressure adjustment can achieve multiple massage modes, resulting in pressure equalization, adjustable single-chamber air pressure, and low power consumption. The combination of pre-charge pressure holding and pressure-holding massage can achieve the effect of pressure holding. By combining the above four actions, the user experience of the air pressure massager can be effectively improved, making the application of the air pressure massager more extensive and suitable for a wider range of people.

Claims

1. An air pressure massager, comprising an air source (700) and a plurality of airbags (800) connected to the air source (700), characterized in that: It also includes a pressure regulating device, which includes a base (100), a pressure-holding channel (200) and multiple three-way cavities (300) inside the base (100). Each three-way cavity (300) is connected to an openable and closable guide cavity (310), and an airbag connecting pipe (400) is connected to the guide cavity (310). The port of the three-way cavity (300) that is not connected to the guide cavity (310) is connected to the pressure-holding channel (200). Each three-way cavity (300) and the pressure-holding channel (200) are provided with a one-way valve (320), which opens from the three-way cavity (300) toward the pressure-holding channel (200). The pressure-holding channel (200) is also connected to an openable and closable pressure-holding channel inlet (210) and an openable and closable first exhaust channel (220). The three-way cavity (300) on the air pressure adjustment device corresponds one-to-one with the airbag (800), and each airbag (800) is connected to the corresponding airbag connecting pipe (400) on the air pressure adjustment device; the air source (700) is connected to the air inlet (210) of the pressure holding channel through the first inflation channel (710); the air source (700) is connected to the guide cavity (310) on each three-way cavity (300) in the air pressure adjustment device through the second inflation channel (720); The air pressure massager achieves one of the following actions by selectively opening and closing the pressure-holding channel (200), the three-way cavity (300), and the guide cavity (310): pre-charging and pressure holding, pressure-holding massage, pressure equalization and pressure adjustment, and automatic pressure release upon power failure. During the pre-charge and pressure-holding action, the air source (700) directly pressurizes the pressure-holding channel (200) in the air pressure adjustment device, and the pressure in the pressure-holding channel (200) is increased to close the pressure-holding channel (200) so as to maintain the air pressure in the pressure-holding channel (200) unchanged. In the pressure-holding massage action, a pre-filling pressure-holding action is first performed to keep the pressure-holding channel (200) closed, and air is individually inflated to each airbag (800) by the air source (700), and the air pressure in each airbag (800) is kept constant through the pressure-holding channel (200); In the pressure equalization and pressure regulation operation, a pre-inflation and pressure holding operation is first performed to keep the pressure holding channel (200) closed, and the air pressure in each airbag (800) is changed by individually deflating the inflated airbags (800); During the automatic pressure relief action after power failure, the pressure holding channel (200) automatically opens after all the solenoid valves are de-energized, and each airbag (800) releases air and exhausts gas through the pressure holding channel (200).

2. The air pressure massager as described in claim 1, characterized in that: The base (100) is provided with a first exhaust solenoid valve (230) and a gas chamber solenoid valve (500) corresponding to the three-way cavity (300); the first exhaust solenoid valve (230) controls the opening and closing of the first exhaust channel (220), and the gas chamber solenoid valve (500) controls the opening and closing of the guide cavity (310) connected to the corresponding three-way cavity (300).

3. The air pressure massager as described in claim 2, characterized in that: The base (100) includes a middle frame (120) and a lower seat (110). Multiple three-way cavities (300) are spaced apart within the lower seat (110) along its length. Multiple flow guide cavities (310) are spaced apart within the middle frame (120) along its length, with each flow guide cavity (310) located above a corresponding three-way cavity (300). A gas chamber solenoid valve (500) is fixed to the lower seat (110). At the bottom, the piston end of the air chamber solenoid valve (500) passes through the corresponding three-way cavity (300) and extends into the upper guide cavity (310). The piston end of the air chamber solenoid valve (500) and each connecting part of the guide cavity (310) form a sealed fit. The middle frame (120) is detachably connected to the top of the lower seat (110). The middle frame (120) is provided with an air intake and exhaust channel (130) connecting the guide cavity (310) and the airbag connecting pipe (400).

4. The air pressure massager as described in claim 3, characterized in that: The lower seat (110) is also provided with an exhaust channel (140) corresponding to the three-way cavity (300) one by one. The exhaust channel (140) is connected between the pressure holding channel (200) and the corresponding three-way cavity (300). The one-way valve (320) is located at the connection between the exhaust channel (140) and the pressure holding channel (200). The one-way valve (320) is opened from the exhaust channel (140) in the direction of the pressure holding channel (200).

5. The air pressure massager as described in claim 3, characterized in that: The airbag connecting pipe (400) is a conical pipe that is erected on the middle frame (120). The outer diameter of one end of the airbag connecting pipe (400) connected to the air intake and exhaust channel (130) is larger than the outer diameter of the other end.

6. The air pressure massager as described in claim 3, characterized in that: The base (100) also includes a one-way valve fixing plate (160), which is detachably connected to the side of the lower seat (110). The one-way valve fixing plate (160) is provided with a first mounting half cavity (161) corresponding to the one-way valve (320), and the lower seat (110) is provided with a second mounting half cavity (162) corresponding to the one-way valve (320). The second mounting half cavity (162) is connected to the corresponding three-way cavity (300). The first mounting half cavity (161) and the second mounting half cavity (162) are connected to form a cavity for accommodating the corresponding one-way valve (320).

7. The air pressure massager as described in claim 6, characterized in that: The base (100) also includes a sealing side cover plate (170). The one-way valve fixing plate (160) is provided with a pressure holding channel groove (163) extending along the length direction of the one-way valve fixing plate (160). The pressure holding channel groove (163) is connected to each of the first mounting half cavities (161). The sealing side cover plate (170) is detachably connected to the side of the one-way valve fixing plate (160) that is not connected to the lower seat (110). The sealing side cover plate (170) covers the pressure holding channel groove (163) and seals with the pressure holding channel groove (163) to form a pressure holding channel (200).

8. The air pressure massager as described in claim 3, characterized in that: The base (100) is also provided with an air passage (180) and an openable and closable second exhaust chamber (190); the air passage (180) is provided with an air passage inlet (181), and the air passage (180) is connected to the guide chamber (310) of each three-way chamber (300); the second exhaust chamber (190) is connected to the air passage (180), and the second exhaust chamber (190) is connected to the second exhaust passage (191) at the part where the second exhaust chamber (190) is not connected to the air passage (180).

9. The air pressure massager as described in claim 8, characterized in that: It also includes a second exhaust solenoid valve (192), which controls the opening and closing of the second exhaust chamber (190); the second exhaust solenoid valve (192) is fixed to the bottom of the lower seat (110), and the piston end of the second exhaust solenoid valve (192) extends into the second exhaust chamber (190) and forms a sealing fit with each communication point of the second exhaust chamber (190).

10. The air pressure massager as described in claim 8, characterized in that: The base (100) also includes a top cover (150), one side of which is provided with an air passage groove extending along the length of the top cover (150). The top cover (150) is detachably connected to the middle frame (120), and the air passage groove is connected to the second exhaust chamber (190) and the guide chamber (310) of each three-way chamber (300). The side of the middle frame (120) that is in contact with the top cover (150) is sealed with the air passage groove to form an air passage (180).

11. The air pressure massager as described in claim 10, characterized in that: The upper cover (150) is also provided with a relief hole (151) corresponding to the airbag connecting pipe (400), and the airbag connecting pipe (400) passes through the corresponding relief hole (151) on the upper cover (150).

12. The air pressure massager as described in claim 10, characterized in that: The base (100) further includes a base extension (600), which is composed of an upper cover extension (610), a middle frame extension (620), and a lower seat extension (630). The middle frame extension (620) is detachably connected between the upper cover extension (610) and the lower seat extension (630), and the base extension (600) is fixed to one end of the base (100). The pressure-holding channel air inlet (210) is provided on the upper cover extension (610), and the first exhaust channel (220) is provided on the lower seat extension (630). The middle frame extension (620) is provided with a first exhaust chamber (631) that communicates with both the pressure-holding channel air inlet (210) and the first exhaust channel (220). The first exhaust chamber (631) is formed by extending from the pressure-holding channel (200) into the middle frame extension (620).

13. The air pressure massager as described in claim 12, characterized in that: The first exhaust solenoid valve (230) is fixed at the bottom of the lower seat extension (630). The piston end of the first exhaust solenoid valve (230) extends into the first exhaust chamber (631) and forms a sealed fit with each communication point of the first exhaust chamber (631).

14. The air pressure massager as described in claim 12, characterized in that: It also includes an intake check valve (240), which is located at the air inlet (210) of the pressure holding channel; the intake check valve (240) controls the opening and closing of the air inlet (210) of the pressure holding channel, and the intake check valve (240) opens from the outside of the air inlet (210) of the pressure holding channel in the direction of the first exhaust chamber (631).

15. The air pressure massager as described in claim 12, characterized in that: The upper cover extension (610) and the upper cover (150) are an integral structure, the middle frame extension (620) and the middle frame (120) are an integral structure, and the lower seat extension (630) and the lower seat (110) are an integral structure.

16. The air pressure massager as described in claim 13, characterized in that: The first exhaust solenoid valve (230), the second exhaust solenoid valve (192), and the air chamber solenoid valve (500) are all normally closed solenoid valves.

17. The air pressure massager as described in claim 16, characterized in that: The piston ends of the first exhaust solenoid valve (230), the second exhaust solenoid valve (192), and the air chamber solenoid valve (500) are all provided with sealing caps.

18. The air pressure massager as described in claim 17, characterized in that: The sealing cap is a silicone sealing cap.

19. The air pressure massager as described in claim 1, characterized in that: It also includes a three-way connector (730), the inlet end of which is connected to the gas source (700), and the two outlet ends of which are connected to the first inflation channel (710) and the second inflation channel (720) respectively.

20. The air pressure massager as described in claim 19, characterized in that: It also includes a pressure sensor (740) disposed between the air source (700) and the tee connector (730).

21. The air pressure massager as described in claim 1, characterized in that: The airbag (800) is connected to the corresponding airbag connecting pipe (400) through a connecting pipe (810), and the connecting pipe (810) is a connecting hose.

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