Rotary switching valve and pneumatic comfort system

Abstract

The embodiment of the utility model relates to a rotary switching valve and a pneumatic comfort system. The rotary switching valve comprises a bottom shell, a rotary disc and a top cover which are sequentially stacked. The bottom shell is provided with a plurality of inflation ports used for being connected with an air source, a plurality of consumption ports used for being connected with air bags, a plurality of deflation ports, a plurality of first air inlet grooves, a plurality of consumption fluid grooves and a plurality of first deflation grooves, the inflation ports are communicated with the first air inlet grooves in a one-to-one correspondence mode, and the consumption ports are communicated with the consumption fluid grooves in a one-to-one correspondence mode. The air leakage ports are communicated with the first air leakage grooves in a one-to-one correspondence manner; the top cover is provided with a plurality of second air inlet grooves and a plurality of second air outlet grooves. The turntable covers each groove; the turntable is provided with a first air inlet interface, a second air inlet interface, a first air leakage interface and a second air leakage interface; when the rotary table rotates, the rotary switching valve can be switched between the first state and the second state so as to achieve inflation and deflation of all the air bags, inflation and deflation control over the multiple air bags can be achieved through one rotary switching valve, and cost and heating are reduced.

Description

TECHNICAL FIELD

[0001] The embodiment of the present application relates to the technical field of pneumatic comfort, in particular to a rotary switching valve and a pneumatic comfort system. BACKGROUND

[0002] The pneumatic waist support is a common part of the automobile seat comfort system, in order to adapt to the different waist positions of different users, the control valve is usually used to sequentially charge and discharge each air bag to adjust to the best ejection position. The existing control valve usually adopts a plurality of electromagnetic valves or SMA (Shape Memory Alloy Valve, shape memory alloy valve) to independently control the charging and discharging of each air bag. The electromagnetic valve or SMA needs to have a pressure maintaining function, and is generally a three-position three-way valve. The control valve group composed of a plurality of electromagnetic valves or SMA valves will make the cost of the whole control device higher, and the heat emission of the valve assembly is larger. CONTENT OF THE UTILITY MODEL

[0003] In view of the above problems, the embodiment of the present application provides a rotary switching valve and a pneumatic comfort system, which overcomes the above problems or at least partially solves the above problems.

[0004] According to one aspect of the embodiment of the present application, a rotary switching valve is provided, comprising a bottom shell, a rotating disc and a top cover which are sequentially stacked; one side of the bottom shell is provided with a plurality of inflation ports for connecting air sources, a plurality of consumption ports for connecting air bags and a plurality of exhaust ports in communication with the external environment; the other side of the bottom shell is provided with a plurality of first air inlet grooves, a plurality of consumption fluid grooves and a plurality of first exhaust grooves, the inflation ports and the first air inlet grooves correspond to each other in communication, the consumption ports and the consumption fluid grooves correspond to each other in communication, and the exhaust ports and the first exhaust grooves correspond to each other in communication; the top cover is provided with a plurality of second air inlet grooves and a plurality of second exhaust grooves; one side of the rotating disc covers the slot openings of the first air inlet grooves, the slot openings of the consumption fluid grooves and the slot openings of the first exhaust grooves respectively; the other side of the rotating disc covers the slot openings of the second air inlet grooves and the slot openings of the second exhaust grooves respectively; the rotating disc is provided with a plurality of first air inlet interfaces, a plurality of second air inlet interfaces, a plurality of first exhaust interfaces and a plurality of second exhaust interfaces; when an external driver drives the rotating disc to rotate along the rotating shaft, the rotary switching valve can be switched between a first state, a second state and a third state to realize the inflation and exhaust of each air bag.

[0005] In an alternative mode, the first state is that one of the first gas inlet interfaces is in communication with the first gas inlet groove and the second gas inlet groove, and one of the second gas inlet interfaces is in communication with the second gas inlet groove and one of the consumption fluid grooves; the second state is that one of the first gas outlet interfaces is in communication with one of the consumption fluid grooves and one of the second gas outlet grooves, and one of the second gas outlet interfaces is in communication with the second gas outlet groove and the first gas outlet groove.

[0006] In an alternative mode, the rotary switching valve is capable of switching between a first state, a second state and a third state to realize inflation, deflation and pressure maintenance of each of the air bags; the third state is that the first gas inlet interface is disconnected from the first gas inlet groove, and the second gas inlet interface is disconnected from the second gas inlet groove.

[0007] In an alternative mode, the first gas inlet groove extends in a circular arc shape with the rotation shaft as the center; the second gas inlet groove extends in a circular arc shape with the rotation shaft as the center; the first gas outlet groove extends in a circular arc shape with the rotation shaft as the center; and the second gas outlet groove extends in a circular arc shape with the rotation shaft as the center.

[0008] In an alternative mode, the consumption fluid grooves are in the shape of a fan, and a plurality of the consumption fluid grooves are arranged in sequence along the circumference of the rotating disc.

[0009] In an alternative mode, along the circumference of the rotating disc, a plurality of the first gas inlet grooves are distributed on both sides of the consumption fluid grooves, and a plurality of the first gas outlet grooves are distributed on both sides of the consumption fluid grooves.

[0010] In an alternative mode, the rotating disc is further provided with a plurality of first through holes and at least one second through hole, the top cover is provided with an exhaust groove, and the other side of the rotating disc covers the groove opening of the exhaust groove; the bottom shell is provided with an exhaust port; the rotary switching valve further has a fourth state, in which the plurality of first through holes are in one-to-one correspondence with the plurality of consumption fluid grooves, the first through holes are in communication with the exhaust groove, and the second through hole is in communication with the exhaust groove and the exhaust port.

[0011] In an alternative mode, the first through hole and the second through hole are both arranged close to the rotation shaft.

[0012] In an alternative mode, the bottom shell is provided with a receiving cavity, the first gas inlet groove, the consumption fluid groove and the first gas outlet groove are accommodated in the receiving cavity, the rotating disc is accommodated in the receiving cavity, the top cover covers the cavity opening of the receiving cavity, and the second gas inlet groove and the second gas outlet groove are accommodated in the receiving cavity.

[0013] According to an aspect of the embodiments of the present application, a pneumatic comfort system is provided, comprising a gas source, a plurality of air bags, a driver and the rotary switching valve; the gas source is connected to the inflation port, the air bags are connected to the exhaust ports one by one, and the driver is used to drive the rotation of the rotating disc.

[0014] The beneficial effects of the embodiments of the present application include: a rotary switching valve is provided, comprising a bottom shell, a rotating disc and a top cover which are stacked in sequence; when an external driver drives the rotating disc to rotate along the rotation shaft, the rotary switching valve can be switched between a first state, a second state and a third state to realize the inflation and deflation of each air bag. Through the rotary switching valve, the inflation and deflation of a plurality of air bags by one rotary switching valve can be realized, compared with the prior art of using a plurality of electromagnetic valves or SMAs to control a plurality of air bags, the cost of the whole control device can be reduced, the heat generation can be reduced, and the integration of the product is higher. BRIEF DESCRIPTION OF DRAWINGS

[0015] One or more embodiments are illustrated by way of example in the figures that form a part of this patent document, these illustrative examples do not limit the embodiments and elements in the figures having the same reference numerals designate like parts, unless otherwise specified, the figures in the drawings do not constitute a proportional limit.

[0016] Figure 1 is a schematic diagram of the rotary switching valve provided by the embodiments of the present application;

[0017] Figure 2 is an exploded schematic diagram of the rotary switching valve provided by the embodiments of the present application;

[0018] Figure 3 is a schematic diagram of the pneumatic comfort system provided by the embodiments of the present application;

[0019] Figure 4 is an air inlet route diagram for air inlet to one of the exhaust ports provided by the embodiments of the present application;

[0020] Figure 5 is a schematic diagram for air inlet to another exhaust port and air deflation to one of the exhaust ports provided by the embodiments of the present application;

[0021] Figure 6 is a schematic diagram for air inlet to another exhaust port and air deflation to another exhaust port provided by the embodiments of the present application;

[0022] Figure 7 is a schematic diagram for air deflation to another exhaust port provided by the embodiments of the present application;

[0023] Figure 8 is a schematic diagram for pressure maintenance of the air bag connected to any exhaust port provided by the embodiments of the present application;

[0024] Figure 9 is a schematic diagram provided by the embodiment of the application for deflation of the air bag in communication with any one of the consumption ports;

[0025] Figure 10 is a schematic diagram provided by the embodiment of the application for air intake of another one of the consumption ports;

[0026] Figure 11 is a schematic diagram provided by the embodiment of the application for air intake of another one of the consumption ports and deflation of another one of the consumption ports;

[0027] Figure 12 is a schematic diagram provided by the embodiment of the application for air intake of one of the consumption ports and deflation of another one of the consumption ports;

[0028] Figure 13 is a schematic diagram provided by the embodiment of the application for deflation of one of the consumption ports;

[0029] Figure 14 is a schematic diagram provided by the embodiment of the application for another implementation manner of pressure maintenance of the air bag in communication with any one of the consumption ports;

[0030] Figure 15 is a schematic diagram provided by the embodiment of the application for another implementation manner of deflation of the air bag in communication with any one of the consumption ports.

[0031] The reference signs in the drawings are as follows:

[0032] 10, rotary switching valve;

[0033] 1, bottom shell; 2, rotating disc; 3, top cover; 4, rotating shaft; o1, rotating shaft;

[0034] 11, air charging port; 12, consumption port; 13, deflation port; 14, first air intake groove; 15, consumption fluid groove; 16, first deflation groove; 17, exhaust port; 1s, accommodating cavity;

[0035] 111, first air charging port; 112, second air charging port;

[0036] 121, first consumption port; 122, second consumption port; 123, third consumption port;

[0037] 131, first deflation port; 132, second deflation port;

[0038] 141, first air intake groove; 142, second air intake groove;

[0039] 151, first consumption groove; 152, second consumption groove; 153, third consumption groove;

[0040] 161, first air venting groove; 162, second air venting groove;

[0041] 21, first air inlet; 22, second air inlet; 23, first air vent; 24, second air vent; 25, first through hole; 26, second through hole;

[0042] 211, first air inlet; 212, second air inlet;

[0043] 221, third air inlet; 222, fourth air inlet;

[0044] 231, first air vent; 232, second air vent;

[0045] 241, third air vent; 242, fourth air vent;

[0046] 31, second air inlet; 32, second air vent; 33, air exhaust groove;

[0047] 311, third air inlet; 312, fourth air inlet;

[0048] 321, third air vent; 322, fourth air vent;

[0049] E1, air inlet route; E2, air venting route;

[0050] 100, pneumatic comfort system; 20, air source; 30, air bag; 40, driver. DETAILED DESCRIPTION

[0051] For the purpose of facilitating the understanding of the present application, the present application will be described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is described as being "fixed to" another element, it can be directly on the other element or one or more intervening elements can be present therebetween. When an element is described as being "connected to" another element, it can be directly connected to the other element or one or more intervening elements can be present therebetween. The terms "vertical", "horizontal", "left", "right", "inner", "outer", and similar expressions used in the present specification are for the purpose of illustration only.

[0052] Unless otherwise defined, all technical and scientific terms used in the present specification are the same as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the present specification are only for the purpose of describing specific embodiments and are not intended to limit the present application. The term "and / or" used in the present specification includes any and all combinations of one or more of the associated listed items.

[0053] Please refer to Figure 1 and Figure 2The embodiment of the application provides a rotary switching valve 10, which comprises a bottom shell 1, a rotating disc 2 and a top cover 3 which are sequentially stacked; a plurality of inflation ports 11 for connecting air sources 20, a plurality of consumption ports 12 for connecting air bags 30 and a plurality of exhaust ports 13 which are in communication with the external environment are arranged on one side of the bottom shell 1; a plurality of first air inlet grooves 14, a plurality of consumption fluid grooves 15 and a plurality of first exhaust grooves 16 are arranged on the other side of the bottom shell 1, the inflation port 11 and the first air inlet groove 14 correspondingly communicate, the consumption port 12 and the consumption fluid groove 15 correspondingly communicate, and the exhaust port 13 and the first exhaust groove 16 correspondingly communicate; the top cover 3 is provided with a plurality of second air inlet grooves 31 and a plurality of second exhaust grooves 32; the side of the rotating disc 2 facing the bottom shell 1 respectively covers the slot of the first air inlet groove 14, the slot of the consumption fluid groove 15 and the slot of the first exhaust groove 16; the other side of the rotating disc 2 facing the top cover 3 respectively covers the slot of the second air inlet groove 31 and the slot of the second exhaust groove 32; the rotating disc 2 is provided with a plurality of first air inlet interfaces 21, a plurality of second air inlet interfaces 22, a plurality of first exhaust interfaces 23 and a plurality of second exhaust interfaces 24; when an external driver 40 drives the rotating disc 2 to rotate along the rotating shaft o1, the rotary switching valve 10 can be switched between a first state, a second state and a third state, so as to realize inflation and exhaust of each air bag 30. By using the rotary switching valve 10 provided by the embodiment of the application, inflation or exhaust of a plurality of air bags 30 by a single rotary switching valve 10 can be realized. Compared with the prior art, the rotary switching valve 10 provided by the embodiment of the application avoids using a plurality of electromagnetic valves or SMAs to control a plurality of air bags 30, thereby effectively reducing the overall cost of the control device, reducing the heating phenomenon, and the integration of the product is high.

[0054] Wherein, the rotating shaft o1 is a virtual shaft. In some embodiments, the rotary switching valve 10 further comprises a rotating shaft 4, the rotating shaft 4 sequentially penetrates the bottom shell 1, the rotating disc 2 and the top cover 3, the rotating shaft 4 is connected with the rotating disc 2, and the rotating shaft 4 is used for being connected with the external driver 40. When the external driver 40 drives the rotating shaft 4 to rotate, the rotating disc 2 rotates along the rotating shaft o1. Wherein, the rotating shaft o1 is the central axis of the rotating shaft 4.

[0055] In some embodiments, the first state is that one of the first gas inlet interfaces 21 is in communication with the first gas inlet groove 14 and the second gas inlet groove 31, and one of the second gas inlet interfaces 22 is in communication with the second gas inlet groove 31 and one of the consumption fluid grooves 15; the second state is that one of the first gas outlet interfaces 23 is in communication with one of the consumption fluid grooves 15 and one of the second gas outlet grooves 32, and one of the second gas outlet interfaces 24 is in communication with the second gas outlet groove 32 and the first gas outlet groove 16. In the first state, the air source 20 inflates the air bag 30 in communication with the first gas inlet groove 14, the first gas inlet interface 21, the second gas inlet groove 31, the second gas inlet interface 22, the consumption fluid groove 15, and the consumption port 12. In the second state, the air bag 30 in communication with the consumption fluid groove 15, the first gas outlet interface 23, the second gas outlet groove 32, the second gas outlet interface 24, and the first gas outlet groove 16 is deflated.

[0056] In some embodiments, the rotary switching valve 10 can switch between the first state, the second state, and the third state to achieve inflation, deflation, and pressure maintenance of each air bag 30; in the third state, the first gas inlet interface 21 is disconnected from the first gas inlet groove 14, and the second gas inlet interface 22 is disconnected from the second gas inlet groove 31; in the third state, at least one air bag 30 is in a pressure maintenance state.

[0057] In some embodiments, the first gas inlet groove 14 extends in a circular arc shape with the rotation axis o1 as the center; the second gas inlet groove 31 extends in a circular arc shape with the rotation axis o1 as the center; the first gas outlet groove 16 extends in a circular arc shape with the rotation axis o1 as the center; and the second gas outlet groove 32 extends in a circular arc shape with the rotation axis o1 as the center. With this arrangement, the first gas inlet interface 21, the second gas inlet interface 22, the first gas outlet interface 23, and the second gas outlet interface 24 can more smoothly communicate or disconnect with the first gas inlet groove 14, the second gas inlet groove 31, the first gas outlet groove 16, and the second gas outlet groove 32 during rotation of the rotating disc 2, thereby improving the switching efficiency and stability of the rotary switching valve 10. In addition, this circular arc design can also reduce the frictional resistance during rotation of the rotating disc 2, prolonging the service life of the rotary switching valve 10.

[0058] In some embodiments, the consumption fluid groove 15 is fan-shaped, and a plurality of consumption fluid grooves 15 are arranged in sequence along the circumference of the rotating disc 2. With this arrangement, only one consumption fluid groove 15 is in communication with the second gas inlet interface 22 during each switching of the rotating disc 2, achieving communication of the second gas inlet interface 22 with only one air bag 30, thereby avoiding gas interference between multiple air bags 30 and improving the stability and accuracy of the pneumatic comfort system 100.

[0059] In some embodiments, along the circumference of the rotating disc 2, a plurality of first air inlet grooves 14 are distributed on both sides of the consumption fluid grooves 15, and a plurality of first air outlet grooves 16 are also distributed on both sides of the consumption fluid grooves 15. This layout can enable the switching between the first state, the second state and the third state regardless of whether the rotating disc 2 rotates clockwise or counterclockwise.

[0060] In some embodiments, the rotating disc 2 is further provided with a plurality of first through holes 25 and at least one second through hole 26, the top cover 3 is provided with an exhaust groove 33, and the other side of the rotating disc 2 covers the slot of the exhaust groove 33; the bottom shell 1 is provided with an exhaust port 17; the rotating switching valve 10 further has a fourth state, in which the plurality of first through holes 25 and the plurality of consumption fluid grooves 15 are in one-to-one correspondence and are in communication, the first through holes 25 are in communication with the exhaust groove 33, and the second through hole 26 is in communication with the exhaust groove 33 and the exhaust port 17. The exhaust port 17 has the same function as the air outlet port 13, and is used for air exhaust. The difference between the fourth state and the second state is that in the fourth state, the plurality of first through holes 25 and the plurality of consumption fluid grooves 15 are in one-to-one correspondence and are in communication, which can realize simultaneous air exhaust of the plurality of air bags 30.

[0061] In some embodiments, the first through holes 25 and the second through hole 26 are both arranged close to the rotating shaft o1. That is, the first through holes 25 are located at the fan head positions of the plurality of fan-shaped consumption fluid grooves 15, and the second through hole 26 is arranged close to the fan head. This design enables the gas in the air bag 30 to be quickly discharged through the first through hole 25 after flowing in the consumption fluid groove 15, and further facilitates the rapid discharge of the gas from the second through hole 26 and the exhaust port 17, thereby improving the exhaust efficiency.

[0062] In some embodiments, the bottom shell 1 is provided with a receiving cavity 1s, the first air inlet groove 14, the consumption fluid groove 15 and the first air outlet groove 16 are received in the receiving cavity 1s, the rotating disc 2 is received in the receiving cavity 1s, the top cover 3 covers the cavity opening of the receiving cavity 1s, and the second air inlet groove 31 and the second air outlet groove 32 are received in the receiving cavity 1s. Through this arrangement, the structure of the entire rotating switching valve 10 is more compact, and the connection between the components is more stable and reliable. At the same time, the arrangement of the receiving cavity 1s can also protect the rotating disc 2, the first air inlet groove 14, the consumption fluid groove 15 and the first air outlet groove 16 and other components from being disturbed and damaged by the external environment, thereby improving the service life and stability of the rotating switching valve 10.

[0063] For the convenience of the reader, please refer to Figure 2 and Figure 4, the first state, the second state, the third state and the fourth state are illustrated by taking two inflation ports 11, three consumption ports 12, two deflation ports 13, two first air inlet grooves 14, three consumption fluid grooves 15, two first deflation grooves 16, two first air inlet interfaces 21, two second air inlet interfaces 22, two first deflation interfaces 23, two second deflation interfaces 24, two second air inlet grooves 31, two second deflation grooves 32 and one exhaust groove 33 as examples.

[0064] For the purpose of clear description, the two inflation ports 11 are expressed as a first inflation port 111 and a second inflation port 112; the three consumption ports 12 are expressed as a first consumption port 121, a second consumption port 122 and a third consumption port 123; the two deflation ports 13 are expressed as a first deflation port 131 and a second deflation port 132; the two first air inlet grooves 14 are expressed as a first air inlet groove 141 and a second air inlet groove 142; the three consumption fluid grooves 15 are expressed as a first consumption groove 151, a second consumption groove 152 and a third consumption groove 153; the two first deflation grooves 16 are expressed as a first deflation groove 161 and a second deflation groove 162; the two first air inlet interfaces 21 are expressed as a first air inlet port 211 and a second air inlet port 212; the two second air inlet interfaces 22 are expressed as a third air inlet port 221 and a fourth air inlet port 222; the two first deflation interfaces 23 are expressed as a first deflation port 231 and a second deflation port 232; the two second deflation interfaces 24 are expressed as a third deflation port 241 and a fourth deflation port 242; the two second air inlet grooves 31 are expressed as a third air inlet groove 311 and a fourth air inlet groove 312; the two second deflation grooves 32 are expressed as a third deflation groove 321 and a fourth deflation groove 322.

[0065] Please refer to Figure 4 When the dial 2 is counterclockwise rotated to the third air inlet port 221 being communicated with the first consumption groove 151, air is supplied to the first consumption port 121 communicated with the first consumption groove 151 through an air inlet route E1 as shown. Figure 4 The air inlet route E1 is the first inflation port 111→the first air inlet groove 141→the first air inlet port 211→the third air inlet groove 311→the third air inlet port 221→the first consumption groove 151→the first consumption port 121→the air bag 30 communicated with the first consumption port 121.

[0066] Please refer to Figure 5 When the dial 2 is counterclockwise rotated to the third air inlet port 221 being communicated with the second consumption groove 152, air is supplied to the second consumption port 122 communicated with the second consumption groove 152 through an air inlet route E2 as shown. Figure 5The shown air intake route E1 supplies air to the second exhaust port 122 which communicates with the second exhaust groove 152. The air intake route E1 is: the first air charging port 111 → the first air intake groove 141 → the first air intake port 211 → the third air intake groove 311 → the third air intake port 221 → the second exhaust groove 152 → the second exhaust port 122 → the air bag 30 which communicates with the second exhaust port 122. At the same time, the first air discharge port 231 communicates the first exhaust port 121 through the first exhaust groove 151, and the air bag 30 which communicates with the first exhaust port 121 through the air discharge route E2 as shown below. Figure 5 The shown air discharge route E2 discharges air from the air bag 30 which communicates with the first exhaust groove 151. The air discharge route E2 is: the air bag 30 which communicates with the first exhaust port 121 → the first exhaust groove 151 → the first air discharge port 131 → the outside environment.

[0067] Referring to Figure 6 When the rotary disc 2 is rotated counterclockwise to the third air intake port 221 which communicates with the third exhaust groove 153, air is supplied to the third exhaust port 123 which communicates with the third exhaust groove 153 through the air intake route E1 as shown below. Figure 6 The shown air intake route E1 supplies air to the second exhaust port 122 which communicates with the second exhaust groove 152. The air intake route E1 is: the first air charging port 111 → the first air intake groove 141 → the first air intake port 211 → the third air intake groove 311 → the third air intake port 221 → the second exhaust groove 152 → the second exhaust port 122 → the air bag 30 which communicates with the second exhaust port 122. At the same time, the first air discharge port 231 communicates the first exhaust port 121 through the second exhaust groove 152, and the air bag 30 which communicates with the second exhaust port 122 through the air discharge route E2 as shown below. Figure 6 The shown air discharge route E2 discharges air from the air bag 30 which communicates with the second exhaust groove 152. The air discharge route E2 is: the air bag 30 which communicates with the second exhaust port 122 → the second exhaust groove 152 → the first air discharge port 231 → the third air discharge groove 321 → the third air discharge port 241 → the first air discharge groove 161 → the first air discharge port 131 → the outside environment.

[0068] Referring to Figure 7 When the rotary disc 2 is rotated counterclockwise to the third air intake port 221 which communicates with the third exhaust groove 153, air is supplied to the third exhaust port 123 which communicates with the third exhaust groove 153 through the air intake route E1 as shown below. Figure 7The shown deflation route E2 deflates the air bag 30 communicated with the third consumption slot 153. The deflation route E2 is: the air bag 30 communicated with the third consumption port 123→the third consumption slot 153→the first deflation port 131→the first deflation slot 161→the third deflation port 231→the third deflation slot 321→the second deflation port 241→the second deflation slot 271→the air source 20. At the same time, the first inflation port 111 is disconnected with the air source 20, and the air bag 30 communicated with the first consumption slot 151 and the first consumption port 121 is inflated, and the air bag 30 communicated with the second consumption slot 152 and the second consumption port 122 is inflated.

[0069] Please refer to Figure 8 When the dial 2 continues to rotate counterclockwise to the third inflation port 221 is disconnected with the third deflation slot 321, the second deflation slot 271 and the first deflation slot 161, the air bag 30 communicated with the third consumption port 123 is not inflated. At the same time, the third deflation port 231 is disconnected with the first deflation slot 161, the second deflation slot 271 and the third deflation slot 321, and the air bag 30 communicated with the third consumption port 123 is not deflated. The air bag 30 connected with any one of the consumption ports 12 (the first consumption port 121, the second consumption port 122 and the third consumption port 123) is inflated.

[0070] Please refer to Figure 9 When the dial 2 continues to rotate counterclockwise to the three first through holes 25 are communicated with the first consumption slot 151, the second consumption slot 152 and the third consumption slot 153 respectively, the first through hole 25 is communicated with the exhaust slot 33, and the second through hole 26 is communicated with the exhaust slot 33 and the exhaust port 17. The air bag 30 communicated with any one of the consumption ports 12 (the first consumption port 121, the second consumption port 122 and the third consumption port 123) is deflated. The deflation route E2 is: the air bag 30 communicated with any one of the consumption ports 12 (the first consumption port 121, the second consumption port 122 and the third consumption port 123)→the corresponding fluid consumption slot (the first consumption slot 151, the second consumption slot 152 and the third consumption slot 153)→the corresponding first through hole 25→the exhaust slot 33→the second through hole 26→the exhaust port 17→the external environment.

[0071] It is worth mentioning that when the dial 2 continues to rotate counterclockwise, the above-mentioned Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 The shown state is repeated.

[0072] Please refer to Figure 10 When the dial 2 rotates clockwise to the fourth inflation port 222 is communicated with the third consumption slot 153, the air bag 30 communicated with the third consumption port 123 is inflated through the fourth inflation port 222, the third deflation slot 321, the third deflation port 231, the first deflation slot 161, the first deflation port 131, the second deflation slot 271, the second deflation port 241, the third deflation slot 321, the third deflation port 231, the second deflation slot 271, the second deflation port 241, the first deflation slot 161, the first deflation port 131, the third consumption slot 153 and the fourth inflation port 222. Figure 10The intake route El shown supplies air to the second exhaust port 122 in communication with the second exhaust groove 152. The intake route El is: the second air charging port 112 → the second air intake groove 142 → the second air intake port 212 → the fourth air intake groove 312 → the fourth air intake port 222 → the second exhaust groove 152 → the second exhaust port 122 → the air bag 30 in communication with the second exhaust port 122. At the same time, the second air exhaust port 232 communicates the third exhaust port 123 through the third exhaust groove 153, and the air bag 30 in communication with the third exhaust port 123 is exhausted through the exhaust route E2 shown as follows.

[0073] Referring to Figure 11 When the dial 2 is rotated clockwise to the fourth air intake port 222 in communication with the third exhaust groove 153, air is supplied to the third exhaust port 123 in communication with the third exhaust groove 153 through the intake route El shown as follows. Figure 11 The intake route El shown supplies air to the second exhaust port 122 in communication with the second exhaust groove 152. The intake route El is: the second air charging port 112 → the second air intake groove 142 → the second air intake port 212 → the fourth air intake groove 312 → the fourth air intake port 222 → the second exhaust groove 152 → the second exhaust port 122 → the air bag 30 in communication with the second exhaust port 122. At the same time, the second air exhaust port 232 communicates the third exhaust port 123 through the third exhaust groove 153, and the air bag 30 in communication with the third exhaust port 123 is exhausted through the exhaust route E2 shown as follows. Figure 11 The exhaust route E2 shown exhausts the air bag 30 in communication with the third exhaust groove 153. The exhaust route E2 is: the air bag 30 in communication with the third exhaust port 123 → the third exhaust groove 153 → the second air exhaust port 232 → the fourth air exhaust groove 322 → the fourth air exhaust port 242 → the second air exhaust groove 162 → the second air exhaust port 132 → the external environment.

[0074] Referring to Figure 12 When the dial 2 is rotated clockwise to the fourth air intake port 222 in communication with the third exhaust groove 153, air is supplied to the third exhaust port 123 in communication with the third exhaust groove 153 through the intake route El shown as follows. Figure 12 The intake route El shown supplies air to the second exhaust port 122 in communication with the second exhaust groove 152. The intake route El is: the second air charging port 112 → the second air intake groove 142 → the second air intake port 212 → the fourth air intake groove 312 → the fourth air intake port 222 → the second exhaust groove 152 → the second exhaust port 122 → the air bag 30 in communication with the second exhaust port 122. At the same time, the second air exhaust port 232 communicates the third exhaust port 123 through the third exhaust groove 153, and the air bag 30 in communication with the third exhaust port 123 is exhausted through the exhaust route E2 shown as follows. Figure 12 The exhaust route E2 shown exhausts the air bag 30 in communication with the third exhaust groove 153. The exhaust route E2 is: the air bag 30 in communication with the third exhaust port 123 → the third exhaust groove 153 → the second air exhaust port 232 → the fourth air exhaust groove 322 → the fourth air exhaust port 242 → the second air exhaust groove 162 → the second air exhaust port 132 → the external environment.

[0075] Referring to Figure 13When the rotary disc 2 rotates clockwise to the fourth inlet port 222 breaks the communication with the fourth inlet groove 312, the first consumption groove 151, the second consumption groove 152 and the third consumption groove 153, the first consumption port 121, the second consumption port 122 and the third consumption port 123 are not supplied with air. At the same time, the second air outlet port 232 breaks the communication with the first consumption groove 151, the second consumption groove 152 and the third consumption groove 153, and the air bag 30 connected with the first consumption port 121, the second consumption port 122 and the third consumption port 123 is not deflated. The air bag 30 connected with any one of the consumption ports 12 (the first consumption port 121, the second consumption port 122 and the third consumption port 123) is kept pressurized. Figure 13 As shown in the air outlet route E2, the air bag 30 connected with the first consumption groove 151 is deflated through the first consumption groove 151, the second air outlet port 232, the fourth air outlet groove 322, the fourth air outlet port 242, the second air outlet groove 162, the second air outlet port 132 and the external environment. At the same time, the second air inlet port 112 breaks the connection with the air source 20, and the air bag 30 connected with the third consumption groove 153 and the third consumption port 123 is kept pressurized, and the air bag 30 connected with the second consumption groove 152 and the second consumption port 122 is kept pressurized.

[0076] Please refer to Figure 14 When the rotary disc 2 rotates clockwise to the fourth inlet port 222 breaks the communication with the fourth inlet groove 312, the first consumption groove 151, the second consumption groove 152 and the third consumption groove 153, the first consumption port 121, the second consumption port 122 and the third consumption port 123 are not supplied with air. At the same time, the second air outlet port 232 breaks the communication with the first consumption groove 151, the second consumption groove 152 and the third consumption groove 153, and the air bag 30 connected with the first consumption port 121, the second consumption port 122 and the third consumption port 123 is not deflated. The air bag 30 connected with any one of the consumption ports 12 (the first consumption port 121, the second consumption port 122 and the third consumption port 123) is kept pressurized.

[0077] Please refer to Figure 15 When the rotary disc 2 rotates clockwise to the fourth inlet port 222 breaks the communication with the fourth inlet groove 312, the first consumption groove 151, the second consumption groove 152 and the third consumption groove 153, the first consumption port 121, the second consumption port 122 and the third consumption port 123 are not supplied with air. At the same time, the second air outlet port 232 breaks the communication with the first consumption groove 151, the second consumption groove 152 and the third consumption groove 153, and the air bag 30 connected with the first consumption port 121, the second consumption port 122 and the third consumption port 123 is not deflated. The air bag 30 connected with any one of the consumption ports 12 (the first consumption port 121, the second consumption port 122 and the third consumption port 123) is kept pressurized.

[0078] According to an aspect of the embodiment of the present application, please refer to Figure 3The pneumatic comfort system 100 comprises a gas source 20, a plurality of air bags 30, a driver 40 and the rotary switching valve 10. The gas source 20 is connected to the inflation port 11, the air bags 30 are connected to the exhaust ports 12 one by one, and the driver 40 is used to drive the rotation of the rotating disc 2. For the specific structure and function of the rotary switching valve 10, please refer to the above embodiments, which will not be repeated here.

[0079] It is worth mentioning that when the rotating disc 2 continues to rotate clockwise, the above-mentioned Figure 10 、 Figure 11 、 Figure 12 、 Figure 13 、 Figure 14 、 Figure 15 state is repeated.

[0080] It is worth mentioning that when the rotating disc 2 continues to rotate clockwise, the above-mentioned Figure 10 、 Figure 11 、 Figure 12 、 Figure 13 、 Figure 14 、 Figure 15 state is repeated.

[0080] It is worth mentioning that when the rotating disc 2 continues to rotate clockwise, the above-mentioned Figure 10 、 Figure 11 、 Figure 12 、 Figure 13 、 Figure 14 、 Figure 15 state is repeated.

[0080] It is worth mentioning that when the rotating disc 2 continues to rotate clockwise, the above-mentioned Figure 10 、 Figure 11 、 Figure 12 、 Figure 13 、 Figure 14 、 Figure 15 state is repeated.

[0080] It is worth mentioning that when the rotating disc 2 continues to rotate clockwise, the above-mentioned Figure 10 、 Figure 11 、 Figure 12 、 Figure 13 、 Figure 14 、 Figure 15 state is repeated.

[0080] It is worth mentioning that when the rotating disc 2 continues to rotate clockwise, the above-mentioned Figure 10 、 Figure 11 、 Figure 12 、 Figure 13 、 Figure 14 、 Figure 15 state is repeated.

[0080] It is worth mentioning that when the rotating disc 2 continues to rotate clockwise, the above-mentioned Figure 10 、 Figure 11 、 Figure 12 、 Figure 13 、 Figure 14 、 Figure 15 state is repeated.

[0080] It is worth mentioning that when the rotating disc 2 continues to rotate clockwise, the above-mentioned Figure 10 、 Figure 11 、 Figure 12 、 Figure 13 、 Figure 14 、 Figure 15 state is repeated.

[0080] It is worth mentioning that when the rotating disc 2 continues to rotate clockwise, the above-mentioned Figure 10 、 Figure 11 、 Figure 12

Claims

1. A rotary switching valve, characterized by The utility model relates to a rotary switch valve, including: The bottom shell, the rotating disc and the top cover are stacked in sequence; A plurality of inflation ports for connecting air source, a plurality of consumption ports for connecting air bag and a plurality of exhaust ports for communicating with external environment are arranged on one side of the bottom shell; A plurality of first air inlet grooves, a plurality of consumption fluid grooves and a plurality of first exhaust grooves are arranged on the other side of the bottom shell, the inflation port and the first air inlet groove one-to-one correspondence, the consumption port and the consumption fluid groove one-to-one correspondence, the exhaust port and the first exhaust groove one-to-one correspondence; The top cover is provided with a plurality of second air inlet grooves and a plurality of second exhaust grooves; The rotating disc is provided with a plurality of first air inlet interfaces, a plurality of second air inlet interfaces, a plurality of first exhaust interfaces and a plurality of second exhaust interfaces; When the external driver drives the rotating disc to rotate along the rotating shaft, the rotary switch valve can switch between the first state and the second state to realize the inflation, exhaust of each air bag.

2. The rotary switch valve according to claim 1, wherein, In the first state, one of the first air inlet interfaces communicates the first air inlet groove and the second air inlet groove, and one of the second air inlet interfaces communicates the second air inlet groove and one of the consumption fluid grooves; In the second state, one of the first exhaust interfaces communicates one of the consumption fluid grooves and one of the second exhaust grooves, and one of the second exhaust interfaces communicates the second exhaust groove and the first exhaust groove. The rotary switch valve can switch between the first state, the second state and the third state to realize the inflation, exhaust and pressure maintenance of each air bag; 3. The rotary switch valve of claim 2, wherein, In the third state, the first air inlet interface is disconnected with the first air inlet groove, and the second air inlet interface is disconnected with the second air inlet groove.

4. The rotary switch valve according to claim 1, wherein, The first air inlet groove extends in a circular arc shape with the rotating shaft as the center; The second air inlet groove extends in a circular arc shape with the rotating shaft as the center; The first exhaust groove extends in a circular arc shape with the rotating shaft as the center; The second exhaust groove extends in a circular arc shape with the rotating shaft as the center. The consumption fluid groove is in a fan shape, and a plurality of consumption fluid grooves are arranged in sequence along the circumference of the rotating disc.

5. The rotary switch valve of claim 4, wherein, Along the circumference of the rotating disc, a plurality of first air inlet grooves are distributed on both sides of the consumption fluid groove, and a plurality of first exhaust grooves are distributed on both sides of the consumption fluid groove.

6. The rotary switch valve of claim 5, wherein, The rotating disc is further provided with a plurality of first through holes and at least one second through hole, the top cover is provided with an exhaust groove, and the other side of the rotating disc covers the groove opening of the exhaust groove; the bottom shell is provided with an exhaust port; 7. The rotary switch valve of claim 5, wherein, The rotary switch valve further has a fourth state, in which a plurality of first through holes are in one-to-one correspondence with a plurality of consumption fluid grooves, the first through hole communicates with the exhaust groove, and the second through hole communicates the exhaust groove and the exhaust port. ​ 8. The rotary switch valve of claim 7, wherein, The first through hole and the second through hole are arranged close to the rotating shaft.

9. The rotary switch valve according to any one of claims 1 to 8, characterized in that The bottom shell is provided with a receiving cavity, the first air inlet groove, the consumption fluid groove and the first air outlet groove are received in the receiving cavity, the rotating disc is received in the receiving cavity, the top cover covers the cavity opening of the receiving cavity, and the second air inlet groove and the second air outlet groove are received in the receiving cavity.

10. A pneumatic comfort system characterized in that, The air source is connected with the inflation port, the air bags are connected with the consumption ports one by one, and the driver is used for driving the rotating disc to rotate.

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