CN220513118U - Multi-air-bag inflating and exhausting device and leg massage instrument - Google Patents

Abstract

The utility model discloses a multi-air-bag air charging and discharging device and a leg massage instrument in the field of massage equipment, wherein the multi-air-bag air charging and discharging device comprises an air charging channel and a plurality of flow guiding cavities communicated with the air charging channel, an air inlet channel, an air discharging channel and an electromagnetic valve which are communicated with the air charging channel are arranged on each flow guiding cavity, the electromagnetic valve opens the air discharging channel and the interface between the air charging channel and the flow guiding cavity and closes the interface between the air charging channel and the flow guiding cavity when the electromagnetic valve is powered off, the air charging channel and the interface between the air discharging channel and the flow guiding cavity are opened when the electromagnetic valve is powered on, a one-way valve is arranged at the position where the flow guiding cavity and the air charging channel are connected, and the opening direction of the one-way valve is from the air charging channel to the direction of the flow guiding cavity. When the multi-air-bag inflating and exhausting device is adopted to inflate the air bags of the leg massage instrument, the one-way valve is opened, the air bags are inflated, when the air pressure in the air bags is consistent with the air pressure in the inflating channel, the one-way valve can be automatically closed, and then the air bags are inflated, so that the phenomenon of air cross can not occur.

Description

Multi-air-bag inflating and exhausting device and leg massage instrument

Technical Field

The utility model relates to the field of massage equipment, in particular to a multi-air-bag air charging and discharging device and a leg massage instrument.

Background

The leg air pressure massage instrument is a device for massaging by inflating and deflating an air bag wrapped on a leg through an inflating and deflating device, and can realize the cyclic air pressure massage of different modes on the leg limbs and muscle tissues through a controller. The controller generally comprises a control unit and a monitoring unit, and the leg air pressure massage device is controlled by combining software and hardware to have various operation modes or be applied to various occasions. As shown in fig. 1, the conventional leg air pressure massage apparatus includes a wearable massage body 6 and a multi-bladder air charging and discharging device 10. The wearable massage body 6 has 5 independent air bags 60 wrapped at different positions of the leg, and a first air bag 601, a second air bag 602, a third air bag 603, a fourth air bag 604, and a fifth air bag 605 are sequentially arranged from the distal end to the proximal end.

As shown in fig. 1, 2 and 3, the multi-airbag inflation and deflation device 10 mainly comprises an electromagnetic valve 4, an inflation channel 11, an air inlet channel 22, an exhaust channel 31, a diversion cavity 21 and the like. The first electromagnetic valve 401, the second electromagnetic valve 402, the third electromagnetic valve 403, the fourth electromagnetic valve 404, and the fifth battery valve 405 are two-position three-way electromagnetic valves, and sequentially control the opening and closing of the inflating and deflating channels of the first airbag 601, the second airbag 602, the third airbag 603, the fourth airbag 604, and the fifth airbag 605. The inflation channel 11, the air inlet channel 22 and the air outlet channel 31 are communicated with the diversion cavity 21; when the electromagnetic valve 4 is in an electrified state, the interface between the exhaust channel 31 and the diversion cavity 21 is closed, and meanwhile, the inflation channel 11 is opened, and gas can enter the air inlet channel 22 from the inflation channel 11 at the moment, so that the airbag inflation process is realized; when the exhaust is needed, the electromagnetic valve 4 is only required to be powered off, and at the moment, the electromagnetic valve 4 can close the interface between the inflating channel 11 and the diversion cavity 21, and the air inlet channel 22 is communicated with the exhaust channel 31.

One common control mode of the leg air pressure massage instrument is a 'step-and-accumulation' mode, namely, a multi-air-bag air charging and discharging device fills an air bag at a distal end, namely, a first air bag 601, with air and then maintains pressure; filling the adjacent second air bag 602 with air for pressure maintaining; then the third balloon 603, the fourth balloon 604, and the fifth balloon 605 at the proximal end are inflated in this order; then the 5 air bags are simultaneously deflated; and then the inflation and deflation are reciprocally circulated, thereby realizing the compression massage of the legs and being beneficial to the circulation of venous blood from the distal end to the proximal end. The inflation process in this mode is as follows:

as shown in fig. 4, the first solenoid valve 401 is opened to inflate the first airbag 601, and the control solenoid valves of the other airbags are in a closed state;

as shown in fig. 5, after the first airbag 601 is inflated, the first electromagnetic valve 401 is still in an open state to keep pressure maintaining, the second electromagnetic valve 402 is opened again, and the second airbag 602 is inflated; at this time, since the air pressure in the first air bag 601 is larger, the air pressure in the second air bag 601 is smaller, and part of the air flows back to the inflation channel 11 and then enters the second air bag 602 to form air leakage.

Similarly, as shown in fig. 6, when the first solenoid valve 401, the second solenoid valve 402, and the third solenoid valve 403 are opened and the third airbag 603 is inflated, a cross gas occurs between the first airbag 601 and the second airbag 602, and between the second airbag 602 and the third airbag 603; as shown in fig. 7, when the first solenoid valve 401, the second solenoid valve 402, the third solenoid valve 403, and the fourth solenoid valve 404 are opened, the fourth air bag 604 is inflated, and air leakage occurs between the first air bag 601 and the second air bag 602, between the second air bag 602 and the third air bag 603, and between the third air bag 603 and the fourth air bag 604; as shown in fig. 8, when the first solenoid valve 401, the second solenoid valve 402, the third solenoid valve 403, the fourth solenoid valve 404, and the fifth solenoid valve 405 are opened, and the fifth airbag 605 is inflated, air leakage occurs between the first airbag 601 and the second airbag 602, between the second airbag 602 and the third airbag 603, between the third airbag 603 and the fourth airbag 604, and between the fourth airbag 604 and the fifth airbag 60. The formation of the air leakage not only can reduce the pressure of the air bag and reduce the control precision of the air filling and discharging of the air bag, but also can generate noise, so that the comfort of a user is reduced when the air bag is used.

Disclosure of Invention

In order to overcome the defects that the existing leg air pressure massage instrument cannot keep air pressure stable, air can not be led, and the like, the utility model aims to solve the technical problems that: a multi-air-bag air-filling and-exhausting device capable of preventing air from being crossed and a leg massage device are provided.

The technical scheme adopted for solving the technical problems is as follows:

the multi-air-bag air charging and discharging device comprises an air charging channel and a plurality of air guide cavities communicated with the air charging channel, an air inlet channel, an air discharging channel and an electromagnetic valve, wherein the air inlet channel, the air discharging channel and the electromagnetic valve are respectively arranged on each air guide cavity, the air discharging channel is connected with the air guide cavities, the air charging channel is connected with the air guide cavities in a power-off state, the air charging channel is connected with the air guide cavities in a power-on state, the air discharging channel is connected with the air guide cavities in a power-off state, the air discharging channel is connected with the air guide cavities in a power-on state, and the air discharging channel is connected with the air guide cavities in a power-on state.

Further, the device also comprises an upper cover, a middle frame and a lower seat which are assembled together in sequence from top to bottom, wherein the air charging channel is arranged in the upper cover, the air discharging channel is arranged in the lower seat, the flow guiding cavity is positioned in the middle frame and is respectively communicated with the air charging channel and the air discharging channel through the upper interface and the lower interface, the air charging channel is positioned in the middle frame, one end of the air charging channel is communicated with the flow guiding cavity, and the other end of the air charging channel is connected with the external interface.

Further, an air pipe joint is further arranged on the upper cover or the lower seat, and one end, far away from the diversion cavity, of the air inlet channel is communicated with the channel in the air pipe joint.

Further, the lower base bottom is equipped with the installation cavity, and installation cavity and water conservancy diversion chamber intercommunication, exhaust passage and installation cavity intercommunication, the disk seat of solenoid valve is fixed at the installation intracavity, and the closing plate of solenoid valve is located the water conservancy diversion intracavity, and the removal iron core of solenoid valve links to each other with the closing plate after passing the interface in installation cavity and water conservancy diversion chamber.

Further, a sealing piece is arranged between the valve seat of the electromagnetic valve and the inner wall of the installation cavity for sealing.

Further, the one-way valve is a valve plate with one end hinged with the inner wall of the flow guiding cavity, a spring is arranged at the hinged position, and the valve plate is blocked at the joint of the air charging channel and the flow guiding cavity under the action of the spring in a natural state.

Further, the opening angle of the valve plate is not more than 90 degrees.

Further, after the valve plate is opened, one end of the valve plate, which is far away from the hinged end, is lapped on the sealing plate of the electromagnetic valve.

Further, the plurality of flow guiding cavities are arranged at intervals along the extending direction of the inflation channel, and each flow guiding cavity corresponds to one electromagnetic valve, the air inlet channel and the air exhaust channel respectively.

The leg massage instrument comprises a wearable massage body and inflation equipment, wherein a plurality of air bags are arranged on the wearable massage body, the leg massage instrument is provided with the multi-air bag inflation and exhaust device, each air bag is respectively connected with a corresponding air inlet channel through an independent air pipe, and the inflation equipment is communicated with the inflation channel.

Further, the upper cover is also provided with an inflation connector communicated with the inflation channel, and the inflation equipment is connected with the inflation connector through an inflation pipeline.

The beneficial effects of the utility model are as follows: through setting up the check valve in the position that the water conservancy diversion chamber is connected with the passageway that aerifys to make the direction of opening of check valve open for from the passageway that aerifys to the water conservancy diversion chamber direction, like this at the inflation in-process, the check valve is opened, and the gasbag is inflated, and when the atmospheric pressure in the gasbag was unanimous with the atmospheric pressure in the passageway that aerifys, the check valve just can close by oneself, and the pressure in the gasbag can stably keep, when aerifing other gasbags again, can not appear the phenomenon of crossing gas, thereby provides the inflation and exhaust efficiency, reduces the energy consumption.

Drawings

FIG. 1 is a schematic view of a conventional leg massage apparatus;

FIG. 2 is a cross-sectional view taken at A-A of FIG. 1, wherein the solenoid valve is in a closed state;

FIG. 3 is a cross-sectional view taken at A-A of FIG. 1, wherein the solenoid valve is in an open state;

FIG. 4 is a schematic illustration of a first bladder inflation process of a prior art leg massage apparatus;

FIG. 5 is a schematic diagram of a second airbag inflation process of the prior leg massage apparatus;

FIG. 6 is a schematic diagram of a third airbag inflation process of a prior art leg massage apparatus;

FIG. 7 is a schematic diagram of a fourth airbag inflation process of a conventional leg massage apparatus;

FIG. 8 is a schematic diagram of a fifth airbag inflation process of a prior art leg massage apparatus;

fig. 9 is a schematic view of the structure of the leg massage apparatus of the present utility model;

FIG. 10 is a cross-sectional view taken at B-B of FIG. 9, wherein the solenoid valve and the check valve are both in an open state;

FIG. 11 is a cross-sectional view taken at B-B of FIG. 9, wherein the solenoid valve is in an open state and the one-way valve is in a closed state;

FIG. 12 is a schematic illustration of a first bladder inflation process for the leg massage apparatus of the present utility model;

FIG. 13 is a schematic view of the inflation process of the second air bag of the leg massage apparatus of the present utility model;

FIG. 14 is a schematic view of the third bladder inflation process of the leg massage apparatus of the present utility model;

FIG. 15 is a schematic view of the fourth bladder inflation process of the leg massage apparatus of the present utility model;

FIG. 16 is a schematic view of a fifth airbag inflation process of the leg massage apparatus of the present utility model;

the figure shows that the device comprises a 1-upper cover, a 2-middle frame, a 3-lower seat, a 4-electromagnetic valve, a 5-one-way valve, a 6-wearing massage body, 7-inflating equipment, a 10-multi-air-bag inflating and deflating device, an 11-inflating channel, a 12-air pipe connector, a 13-inflating connector, a 21-diversion cavity, a 22-air inlet channel, a 31-air outlet channel, a 32-mounting cavity, a 41-sealing plate, a 42-movable iron core, a 43-sealing piece, a 60-air bag, a 61-air pipe, a 71-inflating pipeline, a 401-first electromagnetic valve, a 402-second electromagnetic valve, a 403-third electromagnetic valve, a 404-fourth electromagnetic valve, a 405-fifth electromagnetic valve, a 501-first one-way valve, a 502-second one-way valve, a 503-third one-way valve, a 504-fourth one-way valve, a 505-fifth one-way valve, a 601-first air bag, a 602-second air bag, a 603-third air bag, a 604-fourth air bag and a 605-fifth air bag.

Detailed Description

The utility model is further described below with reference to the accompanying drawings.

As shown in fig. 9-11, the multi-airbag inflating and deflating device 10 of the present embodiment includes an inflating channel 11 and 5 diversion chambers 21 communicated with the inflating channel 11, each diversion chamber 21 is provided with an air inlet channel 22 and an air outlet channel 31 which are communicated with the inflating channel 11, and an electromagnetic valve 4, when the electromagnetic valve 4 is in a power-off state, the electromagnetic valve opens the interface between the air outlet channel 31 and the diversion chamber 21 and closes the interface between the inflating channel 11 and the diversion chamber 21, when the electromagnetic valve is in a power-on state, the interface between the inflating channel 11 and the diversion chamber 21 is opened and the interface between the air outlet channel 31 and the diversion chamber 21 is closed, a one-way valve 5 is arranged at the position where the diversion chamber 21 is connected with the inflating channel 11, and the opening direction of the one-way valve 5 is from the inflating channel 11 to the diversion chamber 21.

As shown in fig. 10, when the air is inflated, the electromagnetic valve 4 is energized to open, and the high-pressure gas in the inflation passage 11 blows the one-way valve 5 to inflate the air bag 60 through the intake passage 22; as shown in fig. 11, when the pressure in the air bag 60 reaches or approaches the pressure in the inflation channel 11, the check valve 5 is closed by itself due to the balance of the pressures at both sides, and after the closing, the pressure in the air bag 60 is kept stable as long as the pressure in the inflation channel 11 is not increased any more and the check valve 5 is not opened.

Specifically, as shown in fig. 12, when the first air bag 601 at the distal end needs to be inflated, the first electromagnetic valve 401 is opened, the high-pressure air from the inflation channel 11 pushes the first one-way valve 501 open, the first air bag 601 is inflated, the air pressure of the first air bag 601 is higher than the air in the inflation channel 11 after the inflation is completed, and the first one-way valve 501 is reversely pushed to be closed; then, the second air bag 602 is inflated, as shown in fig. 13, the second electromagnetic valve 402 is opened, and the high-pressure gas from the inflation channel 11 pushes up the second one-way valve 502 to inflate the second air bag 602; because the first check valve 501 can only be conducted unidirectionally, the high-pressure gas in the first air bag 601 does not push the first check valve 501 open and flows back into the channel 11, and the gas in the first air bag 601 does not flow into the second air bag 602. Similarly, as shown in fig. 14 to 16, when the third airbag 603, the fourth airbag 604 and the fifth airbag 605 are inflated respectively, only the corresponding third electromagnetic valve 403, fourth electromagnetic valve 404 and fifth electromagnetic valve 405 are required to be opened, and the second check valve 502, the third check valve 503 and the fourth check valve 504 corresponding to the inflated second airbag 602, third airbag 603 and fourth airbag 604 are automatically closed, so that the problem of air cross between airbags is avoided.

As shown in fig. 9-11, for convenience in arrangement of the channels and the electromagnetic valves, the multi-airbag inflating and deflating device comprises an upper cover 1, a middle frame 2 and a lower seat 3 which are assembled together in sequence from top to bottom; the inflation channel 11 is arranged in the upper cover 1, and the exhaust channel 31 is arranged in the lower seat 3; the flow guiding cavity 21 is positioned in the middle frame 2 and is respectively communicated with the inflation channel 11 and the exhaust channel 31 through an upper interface and a lower interface; the air inlet channel 22 is positioned in the middle frame 2, one end of the air inlet channel is communicated with the flow guide cavity 21, and the other end of the air inlet channel is connected with an external butt joint. Wherein, the inflation channel 11 is of a groove-shaped structure, and is pressed on the upper surface of the middle frame 2 to form the inflation channel 11; the flow guiding cavity 21 is a circular groove arranged at the bottom of the middle frame 2, and a small opening is arranged at the top of the flow guiding cavity and communicated with the inflation channel 11; the lower seat 3 is provided with a small opening at a position corresponding to the circular groove to communicate the exhaust channel 31 with the diversion cavity 21; in this way, the check valve 5 and the solenoid valve 4 can be arranged in the flow guiding chamber 21 well, and the solenoid valve 4 can be ensured to be capable of blocking the inflation channel 11 and the exhaust channel 31.

The upper cover 1 or the lower seat 3 is also provided with an air pipe joint 12, and one end of the air inlet channel 22, which is far away from the diversion cavity 21, is communicated with a channel in the air pipe joint 12. Because the middle frame 2 is clamped in the middle, the space is limited, and the air pipe joint 12 is arranged on the upper cover 1 or the lower seat 3, the air inlet channel 22 can be conveniently connected with the external air pressure massage body 6.

For the installation mode of the electromagnetic valve 4, the preferred scheme of the application is that the bottom of the lower seat 3 is provided with an installation cavity 32, the installation cavity 32 is communicated with the diversion cavity 21, and the exhaust channel 31 is communicated with the installation cavity 32; the top of the valve seat of the electromagnetic valve 4 is fixed in the mounting cavity 32, the sealing plate 41 of the electromagnetic valve 4 is positioned in the diversion cavity 21, and the movable iron core 42 of the electromagnetic valve 4 passes through the interface of the mounting cavity 32 and the diversion cavity 21 and then is connected with the sealing plate 41. The size of the moving core 42 should be ensured to be smaller than the interface aperture of the installation cavity 32 and the guide cavity 21 for the passage of gas. When the electromagnetic valve 4 is in a power-off state, the movable iron core 42 stretches, and the top of the sealing plate 41 is pressed at the connection port of the inflation channel 11 and the diversion cavity 21; when the electromagnetic valve 4 is electrified, the movable iron core 42 is retracted, and the bottom of the sealing plate 41 is pressed at the connection port of the installation cavity 32 and the diversion cavity 21. The mode can not only meet the control function of the electromagnetic valve 4, but also save space and improve the convenience of installation, and meanwhile, most of the structure of the electromagnetic valve 4 is exposed, so that the electromagnetic valve 4 can radiate heat conveniently. In order to uniformly exhaust the air by the air exhaust passage 31, it is necessary to improve the sealing effect so as to prevent the air from leaking out from the fitting gap between the solenoid valve 4 and the installation chamber 32, and therefore, a seal 43 may be provided between the valve seat of the solenoid valve 4 and the inner wall of the installation chamber 32 to seal.

For the check valve 5, there are many existing products currently available on the market, which can be directly installed at the junction of the inflation channel 11 and the diversion cavity 21. In order to simplify the structure, the preferred scheme adopted in the application is that the one-way valve 5 is a valve plate with one end hinged with the inner wall of the diversion cavity 21, a spring is arranged at the hinged position, and the valve plate is blocked at the interface of the inflation channel 11 and the diversion cavity 21 under the action of the spring in a natural state. It is of course also possible to provide the valve plate in the interface of the inflation channel 11, but the flow-guiding chamber 21 is generally larger in size and easier to arrange. The valve plate occupies small space, the work of the electromagnetic valve 4 is not affected, and when the electromagnetic valve 4 is in a power-off state, the sealing plate 41 is pressed on the valve plate; when the electromagnetic valve 4 is electrified, the sealing plate 41 is firstly opened, and when the air is inflated, the valve plate can be easily opened by air to inflate the air bag 60, and when the air pressure is stable, the valve plate is closed, so that a good sealing effect can be achieved under the air pressure effect of the air bag 60.

In order to avoid that, in the event of an accidental interruption of the charge, the sealing plate 41 of the solenoid valve 4 interferes with the valve plate, the opening angle of said valve plate preferably does not exceed 90 °. Thus, even if the power is suddenly cut off, the sealing plate 41 of the electromagnetic valve 4 presses against the valve plate to close the valve plate, and the valve plate is not blocked from resetting.

When the opening angle of the valve plate is controlled, the limiting structure can be arranged at the hinged position of the valve plate, and the distance between the valve plate and the sealing plate 41 can be controlled, so that after the valve plate is opened, one end, far away from the hinged end, of the valve plate is overlapped on the sealing plate 41 of the electromagnetic valve 4 to limit.

For the portable leg air pressure massage apparatus, the compactness of the air charging and discharging device needs to be ensured, the general leg air pressure massage apparatus is provided with a plurality of air bags, and the air charging and discharging of each air bag is independently controlled, so that a plurality of flow guiding cavities 21 are preferably arranged at intervals along the extending direction of the air charging channel 11, and each flow guiding cavity 21 corresponds to one electromagnetic valve 4, the air inlet channel 22 and the air discharging channel 31 respectively.

The leg massage apparatus comprises a wearable massage body 6 and an air charging device 7, wherein a plurality of air bags 60 are arranged on the wearable massage body 6, each air bag 60 comprises a first air bag 601, a second air bag 602, a third air bag 603, a fourth air bag 604 and a fifth air bag 605, the leg massage apparatus is provided with the multi-air-bag air charging and discharging device, each air bag 60 is respectively connected with a corresponding air inlet channel 22 on the multi-air-bag air charging and discharging device through an independent air pipe 61, and the air charging device 7 is communicated with the air charging channel 11. When the air bag type air-filling device is used, the electromagnetic valves 4 can be started in sequence according to different massage programs to charge and discharge the air bags 61, and the check valve 5 can play roles in maintaining pressure and avoiding air leakage, so that control accuracy is improved. In addition, for convenience of connection with the inflation device 7, the upper cover 1 is further provided with an inflation connector 13 communicated with the inflation channel 11, and the inflation device 7 is connected with the inflation connector 13 through an inflation pipeline 71. For the inflation device 7, an air pump is preferable, and a portable massage device is suitable.

Claims (10)

1. The utility model provides a many gasbags fills exhaust apparatus, includes and aerifys passageway (11) and a plurality of water conservancy diversion chamber (21) that are linked together with aerifing passageway (11), all be equipped with on every water conservancy diversion chamber (21) with its inlet channel (22) and exhaust passage (31) and solenoid valve (4) that are linked together, solenoid valve (4) open the interface of exhaust passage (31) and water conservancy diversion chamber (21) and close the interface of aerifing passageway (11) and water conservancy diversion chamber (21) when outage state, open the interface of aerifing passageway (11) and water conservancy diversion chamber (21) and close the interface of exhaust passage (31) and water conservancy diversion chamber (21), characterized by: the one-way valve (5) is arranged at the position where the flow guiding cavity (21) is connected with the air charging channel (11), and the opening direction of the one-way valve (5) is from the air charging channel (11) to the flow guiding cavity (21).

2. The multiple airbag inflation and deflation device of claim 1, wherein: the air charging device further comprises an upper cover (1), a middle frame (2) and a lower seat (3) which are assembled together in sequence from top to bottom, wherein the air charging channel (11) is arranged in the upper cover (1), and the air discharging channel (31) is arranged in the lower seat (3); the flow guiding cavity (21) is positioned in the middle frame (2) and is respectively communicated with the air charging channel (11) and the air discharging channel (31) through an upper interface and a lower interface; the air inlet channel (22) is positioned in the middle frame (2), one end of the air inlet channel is communicated with the flow guide cavity (21), and the other end of the air inlet channel is connected with an external butt joint.

3. The multiple airbag inflation and deflation device of claim 2, wherein: the upper cover (1) or the lower seat (3) is also provided with an air pipe joint (12), and one end of the air inlet channel (22) far away from the diversion cavity (21) is communicated with the channel in the air pipe joint (12).

4. The multiple airbag inflation and deflation device of claim 2, wherein: the utility model discloses a valve seat of solenoid valve (4), including lower seat (3), air discharge channel (31), sealing plate (41) and movable iron core (42) of solenoid valve (4), wherein lower seat (3) bottom is equipped with installation cavity (32), installation cavity (32) and water conservancy diversion chamber (21) intercommunication, and exhaust channel (31) and installation cavity (32) intercommunication, the disk seat of solenoid valve (4) is fixed in installation cavity (32), and sealing plate (41) link to each other after passing the interface of installation cavity (32) and water conservancy diversion chamber (21) in sealing plate (41) in water conservancy diversion chamber (21).

5. The multiple airbag inflation and deflation device of claim 4, wherein: a sealing piece (43) is arranged between the valve seat of the electromagnetic valve (4) and the inner wall of the installation cavity (32) for sealing.

6. The multiple airbag inflation and deflation device of claim 4, wherein: the one-way valve (5) is a valve plate with one end hinged with the inner wall of the diversion cavity (21), a spring is arranged at the hinged position, and the valve plate is blocked at the joint of the inflation channel (11) and the diversion cavity (21) under the action of the spring in a natural state.

7. The multiple airbag inflation and deflation device of claim 6, wherein: the opening angle of the valve plate is not more than 90 degrees.

8. The multiple airbag inflation and deflation device of claim 7, wherein: after the valve plate is opened, one end of the valve plate, which is far away from the hinged end, is lapped on a sealing plate (41) of the electromagnetic valve (4).

9. A multiple airbag inflation and deflation apparatus as defined in any of claims 1-8, wherein: the plurality of flow guide cavities (21) are arranged at intervals along the extending direction of the inflation channel (11), and each flow guide cavity (21) corresponds to one electromagnetic valve (4), the air inlet channel (22) and the air exhaust channel (31) respectively.

10. Leg massage appearance, including wearing formula massage body (6) and inflation equipment (7), be equipped with a plurality of gasbags (60), characterized by on wearing formula massage body (6): the leg massage apparatus has the multi-air-bag inflating and exhausting device according to claim 9, each air bag (60) is respectively connected with the corresponding air inlet channel (22) through an independent air pipe (61), and the inflating equipment (7) is communicated with the inflating channel (11); the upper cover (1) is also provided with an inflation connector (13) communicated with the inflation channel (11), and the inflation equipment (7) is connected with the inflation connector (13) through an inflation pipeline (71).