Gas valve, gas distribution device and pneumatic comfort system

Abstract

The embodiment of the utility model relates to the technical field of fluid control, and particularly discloses a gas valve, a gas distribution device and a pneumatic comfort system. The valve body is provided with a conduction cavity, and a first medium interface, a second medium interface, a third medium interface and a fourth medium interface which are communicated with the conduction cavity; a movable valve core is arranged in the conducting cavity; the third medium interface is communicated with the fourth medium interface; the air valve is provided with a first ventilation state enabling the movable valve element to cut off communication between the communication cavity and the first medium connector and a second ventilation state enabling the movable valve element to cut off communication between the communication cavity and the second medium connector. When the air valve is in a first ventilation state, the second medium interface is communicated with the third medium interface and the fourth medium interface; and when the air valve is in the second ventilation state, the first medium interface is communicated with the third medium interface and the fourth medium interface. According to the embodiment of the utility model, the gas inlet path switching control on the gas distribution device can be realized.

Description

Technical Field

[0001] The utility model relates to the technical field of fluid control, in particular to an air valve, a gas distribution device and a pneumatic comfort system. Background Art

[0002] Pneumatic comfort systems, such as pneumatic massage systems, pneumatic lumbar support systems, pneumatic wing support systems, etc., usually use a valve module to control the connection between the air source device and the air bag. Among them, the valve module is provided with multiple valves, each of which is connected to an air bag and controls the inflation and deflation of the corresponding air bag. In order to improve the integration effect of the valve module, the valve module is provided with a main air intake duct that is generally connected to the air supply device, and the air inlet of each air valve is connected to the main air intake duct. The gas provided by the air source device enters the air valves of the valve module through the main air intake duct, and a main air intake switch valve is provided to control the connection and disconnection between the main air intake duct and the air supply device.

[0003] However, when the air valve module has multiple groups of air valves with different functional requirements, such as when the air valve module has a pneumatic massage valve group, a pneumatic lumbar support valve group, and a pneumatic wing support valve group, and the air source device further includes an air pump, an air tank and other air supply sources, the air path of the total air intake airway needs to be switched according to different functional requirements to meet the air demand of different air valve groups. For example, when the wing is supported quickly, it may be necessary to inflate the air by the air pump and the air tank at the same time and the pneumatic wing support valve group controls the rapid inflation of the wing airbags, while when performing pneumatic massage, only the air pump is used to supply air and the pneumatic massage valve group controls the inflation of the massage airbags. However, the current straight-through total air intake airway and the total air intake switch valve thereon cannot achieve the corresponding functional requirements. When the air source device is working and the total air intake switch valve is opened, the total air intake airway is connected to the air inlet of each air valve. The air path between the air valve module and the air source device can only be directly connected and disconnected by the total air intake switch valve, but the air path switching cannot be achieved. Utility Model Content

[0004] The utility model is mainly to solve the problem that the total air intake duct of the air valve module in the pneumatic comfort system of the prior art cannot realize air path switching and is difficult to meet the precise air supply demand, and provides an air valve, a gas distribution device and a pneumatic comfort system.

[0005] A technical solution adopted by the utility model is: to provide an air valve, including a valve body; a conducting chamber, and a first medium interface, a second medium interface, a third medium interface and a fourth medium interface connected to the conducting chamber are arranged on the valve body; an active valve core is arranged in the conducting chamber; and the third medium interface is connected to the fourth medium interface; the air valve has a first ventilation state in which the active valve core cuts off the conduction between the conducting chamber and the first medium interface, and a second ventilation state in which the active valve core cuts off the conduction between the conducting chamber and the second medium interface; when the air valve is in the first ventilation state, the second medium interface is connected to the third medium interface and the fourth medium interface; when the air valve is in the second ventilation state, the first medium interface is connected to the third medium interface and the fourth medium interface.

[0006] Optionally, a first medium opening and a second medium opening are provided on the wall of the conduction chamber, the first medium opening is connected to the first medium interface via a first air channel, and the second medium opening is connected to the second medium interface via a second air channel; wherein, the air valve is placed in the first ventilation state by allowing the movable valve core to close the first medium opening and open the second medium opening; and the air valve is placed in the second ventilation state by allowing the movable valve core to close the second medium opening and open the first medium opening.

[0007] Optionally, a coil is provided on the valve body, and the movable valve core is displaced under the excitation of the coil to close the first medium opening or the second medium opening.

[0008] Optionally, the air valve is provided with an elastic return member; the elastic return member is operatively connected between the movable valve core and the wall of the conduction chamber to cause the movable valve core to normally close the first medium opening or the second medium opening.

[0009] Optionally, a first air pressure sensor is provided to detect the air pressure in the first airway; and / or a second air pressure sensor is provided to detect the air pressure in the second airway.

[0010] Optionally, the third medium interface is communicated with the fourth medium interface via a third air channel; the communication chamber is communicated with the third air channel via a fourth air channel, so as to be communicated with the third medium interface and the fourth medium interface.

[0011] Optionally, the valve body includes a first valve body and a second valve body which are sealed and connected; wherein the first medium interface and the conducting chamber are arranged on the first valve body, and the second medium interface, the third medium interface and the fourth medium interface are arranged on the second valve body.

[0012] In order to solve the above technical problem, another technical solution adopted by the present invention is: to provide a gas distribution device, including the above gas valve.

[0013] In order to solve the above-mentioned technical problems, another technical solution adopted by the utility model is: to provide a pneumatic comfort system, including a first air source device, a second air source device, a first air bag group, a second air bag group and the above-mentioned gas distribution device; the first air bag group includes at least one first air bag, and the second air bag group includes at least one second air bag; wherein, the first air source device is connected to the third medium interface, the second air source device is connected to the first medium interface, the first air bag group is connected to the second medium interface, and the second air bag assembly is connected to the fourth medium interface.

[0014] Optionally, the first gas source device includes an air pump, and the second gas source device includes a gas storage container.

[0015] The beneficial effects of the embodiments of the utility model are:

[0016] The gas valve of the utility model is provided with a plurality of medium interfaces respectively connected with the conducting chamber of the valve body on the valve body, and a movable valve core is provided in the conducting chamber. The movable valve core can switch and cut off the connection between two of the medium interfaces and the conducting chamber, so that the uncut-off medium interface is connected with the other opened medium interfaces through the conducting chamber, while the other cut-off medium interface cannot be connected with the other opened medium interfaces through the conducting chamber, thereby realizing gas path switching.

[0017] The gas distribution device of the utility model is provided with the gas valve as the main air intake valve, which can realize the switching of the air circuit. In addition, the pneumatic comfort system of the utility model adopts the gas distribution device, and the integrated air circuit switching is possible, which meets the air intake switching control requirements of the valve groups including pneumatic massage, pneumatic lumbar support and pneumatic wing support, etc., which are provided on a single gas distribution device, especially the air circuit switching requirements when the pneumatic comfort system with different functions such as pneumatic massage, pneumatic lumbar support and pneumatic wing support, which includes air source settings of air pump and air storage tank, can realize the rapid wing support response of the air pump and air storage tank supplying air to the pneumatic wing support. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments of the utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the drawings without paying creative work.

[0019] Figure 1It is a schematic diagram of the explosion structure of the gas valve provided by the embodiment of the utility model along the first viewing angle;

[0020] Figure 2 It is a schematic diagram of the assembly structure of the gas valve provided by the embodiment of the utility model;

[0021] Figure 3 It is a side view structural schematic diagram of the gas valve provided by the embodiment of the utility model;

[0022] Figure 4 is along Figure 3 Schematic diagram of the cross-sectional structure in the AA direction;

[0023] Figure 5 is along Figure 3 Schematic diagram of the cross-sectional structure in the middle BB direction;

[0024] Figure 6 is a schematic diagram of the explosion structure of the gas valve provided by the embodiment of the utility model along the second viewing angle;

[0025] Figure 7 It is a schematic diagram of the split structure of the first valve body and the second valve body of the gas valve provided in an embodiment of the utility model.

[0026] Reference numerals:

[0027] 1000, air valve;

[0028] 1. Valve body; 1a. Spool; 1b. Coil; 1c. First receiving groove; 1d. Second receiving groove; 1e. First valve body; 1f. Second valve body; 1e1. Plug connector; 1f1. Plug slot;

[0029] 11. Conductive chamber; 111. First medium opening; 112. Second medium opening; 12. First medium interface; 13. Second medium interface; 14. Third medium interface; 15. Fourth medium interface; 16. First airway; 17. Second airway; 171. Second airway segment I; 172. Second airway segment II; 173. Second airway segment III; 18. Third airway; 19. Fourth airway;

[0030] 2. Movable valve core;

[0031] 3. Elastic reset member;

[0032] 4. The first air pressure sensor;

[0033] 5. Second air pressure sensor;

[0034] 6. Sealing ring. DETAILED DESCRIPTION

[0035] In order to facilitate the understanding of the utility model, the utility model is described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element, or there can be one or more centered elements therebetween. When an element is described as "connected to" another element, it can be directly connected to the other element, or there can be one or more centered elements therebetween. The terms "first", "second", "third", etc. used in this specification are only for the convenience of the description of the embodiments of this specification, and do not show the importance of the corresponding components.

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

[0037] See also Figures 1 to 5 As shown, the gas valve 1000 of the embodiment of the utility model includes a valve body 1 and a movable valve core 2.

[0038] The valve body 1 is provided with a conducting chamber 11, a first medium interface 12, a second medium interface 13, a third medium interface 14 and a fourth medium interface 15, wherein the first medium interface 12, the second medium interface 13, the third medium interface 14 and the fourth medium interface 15 are respectively communicated with the conducting chamber 11, and can respectively realize medium exchange and circulation including gas with the conducting chamber 11, and the first medium interface 12, the second medium interface 13, the third medium interface 14 and the fourth medium interface 15 can be respectively connected to external equipment, such as: an air bag, an air supply device, an air storage device, etc., and the third medium interface 14 is communicated with the fourth medium interface 15.

[0039] The movable valve core 2 is disposed in the conducting chamber 11 , and the movable valve core 2 can change the conducting state between the conducting chamber 11 and the first medium interface 12 , and change the conducting state between the conducting chamber 11 and the second medium interface 13 .

[0040] It is worth mentioning that the air valve 1000 has two ventilation states under the action of the active valve core 2, namely the first ventilation state in which the active valve core 2 cuts off the conduction between the conduction chamber 11 and the first medium interface 12, and the second ventilation state in which the active valve core 2 cuts off the conduction between the conduction chamber 11 and the second medium interface 13. When the air valve 1000 is in the first ventilation state, the second medium interface 13 is connected to the third medium interface 14 and the fourth medium interface 15 through the conduction chamber 11, and the first medium interface 12 is cut off from the conduction chamber 11, that is, the first medium interface 12 is cut off from the second medium interface 13, the third medium interface 14, and the fourth medium interface 15; when the air valve 1000 is in the second ventilation state, the first medium interface 12 is connected to the third medium interface 14 and the fourth medium interface 15, and the second medium interface 13 is cut off from the conduction chamber 11, that is, the second medium interface 13 is cut off from the first medium interface 12, the third medium interface 14, and the fourth medium interface 15.

[0041] The communication between the third medium interface 14 and the fourth medium interface 15 is not affected by the movable valve core 2 , and the third medium interface 14 and the fourth medium interface 15 are in a normal conducting state.

[0042] In some preferred embodiments, the third medium interface 14 is connected to the fourth medium interface 15 via a third air channel 18 ; the conducting chamber 11 is connected to the third air channel 18 via a fourth air channel 19 to communicate with the third medium interface 14 and the fourth medium interface 15 .

[0043] For the above-mentioned conduction chamber 11, please refer to Figure 4 The wall of the conduction chamber 11 is provided with a first medium opening 111 and a second medium opening 112. The first medium opening 111 is communicated with the first medium interface 12 via a first air passage 16, and the second medium opening 112 is communicated with the second medium interface 13 via a second air passage 17. The movable valve core 2 is arranged in the conduction chamber 11 to be switchable between a first position and a second position. When the movable valve core 2 is in the first position, the movable valve core 2 blocks the first medium opening 111 and opens the second medium opening 112. When the movable valve core 2 is in the second position, the movable valve core 2 blocks the second medium opening 112 and opens the first medium opening 111.

[0044] The active valve core 2 cuts off the communication chamber 11 and the first medium interface 12 by closing the first medium opening 111, and cuts off the communication chamber 11 and the second medium interface 13 by closing the second medium opening 112. The air valve 1000 is in the first ventilation state by closing the first medium opening 111 and opening the second medium opening 112; the air valve 1000 is in the second ventilation state by closing the second medium opening 112 and opening the first medium opening 111.

[0045] It is worth noting that there is a gap between the movable valve core 2 and the inner wall of the conduction chamber 11 as a medium conduction channel, or the movable valve core 2 may be provided with a medium conduction channel, such as being provided on the outer surface of the movable valve core 2. When in the first ventilation state, the second medium interface 13, the second air channel 17, and the second medium opening 112 are in conduction, and are directly in conduction with the third medium interface 14 and the fourth medium interface 15 through the conduction chamber 11 or through the gap between the movable valve core 2 and the conduction chamber 11; when in the second ventilation state, the first medium interface 12, the first air channel 16, and the first medium opening 111 are in conduction, and are in conduction with the third medium interface 14 and the fourth medium interface 15 through the gap between the movable valve core 2 and the inner wall of the conduction chamber 11.

[0046] In some embodiments, Figure 6 As shown, the valve body 1 is provided with a bobbin 1a and a coil 1b, the coil 1b is wound on the bobbin 1a, and the movable valve core 2 corresponds to the winding range of the coil 1b. In an optional embodiment, the conduction chamber 11 is opened in the bobbin 1a so that the coil 1b corresponds to the movable valve core 2, and the coil 1b has a pin for an external power supply. When the coil 1b is powered on, the coil 1b can generate an electromagnetic field, and the movable valve core 2 is displaced under the excitation of the coil 1b to close the first medium opening 111 or the second medium opening 112.

[0047] It can be understood that in some embodiments, the direction of movement of the active valve core 2 can be changed by controlling the direction of the current passing through the coil 1b to control the switching of the active valve core 2 between the first position and the second position in the conduction chamber 11.

[0048] In some other embodiments, please refer to Figure 1 , an elastic reset member 3 may be provided to cause the movable valve core 2 to block the first medium opening 111 or the second medium opening 112 when the coil 1b is not energized. The elastic reset member 3 may be, but is not limited to, a spring, and the elastic reset member 3 is operatively connected between the movable valve core 2 and the wall of the conduction chamber 11 to cause the movable valve core 2 to normally block the first medium opening 111 or the second medium opening 112. As shown in the specific embodiment, the two ends of the elastic reset member 3 are respectively abutted against the walls of the movable valve core 2 and the conductive chamber 11 that open the first medium opening 111, so as to block the second medium opening 112 by elastic force when the coil 1b is not energized; when the coil 1b is energized, the coil 1b generates an electromagnetic field, and the excitation of the coil 1b causes the movable valve core 2 to overcome the elastic force of the elastic reset member 3 and move close to block the first medium opening 111, while opening the second medium opening 112; and when the coil 1b stops being energized, the movable valve core 2 is reset under the action of the elastic reset member 3 to normally block the second medium opening 112.

[0049] In some other preferred embodiments, sealing members are respectively provided at the end of the movable valve core 2 facing the first medium opening 111 and the end facing the second medium opening 112 to improve the sealing performance of the movable valve core 2 to the first medium opening 111 and the second medium opening 112 when the movable valve core 2 is in the first position and the second position. The sealing members include but are not limited to rubber rings, silicone pads, etc.

[0050] In some embodiments, Figure 6 As shown, the air valve 1000 is provided with a first air pressure sensor 4 and a second air pressure sensor 5. The first air pressure sensor 4 is used to detect the air pressure in the first air passage 16, and the second air pressure sensor 5 is used to detect the air pressure in the second air passage 17. The air pressure data detected by the first air pressure sensor 4 and the second air pressure sensor 5 are transmitted to an external control device to control the working state of the air valve 1000. Specifically, the valve body 1 is provided with a first receiving groove 1c connected to the first air passage 6, and the first air pressure sensor 4 is accommodated in the first receiving groove 1c; and the valve body 1 is provided with a second receiving groove 1d connected to the second air passage 17, and the second air pressure sensor 5 is accommodated in the second receiving groove 1d.

[0051] Optionally, the valve body 1 of the gas valve 1000 of the embodiment of the utility model can be integrally formed, or can be assembled from multiple valve body parts, such as two valve body parts, three valve body parts, or four valve body parts.

[0052] In some embodiments, see Figure 7 And re-reference Figure 3 The valve body 1 includes a first valve body 1e and a second valve body 1f which are sealed and assembled into an integral valve body 1. The first air channel 16, the fourth air channel 19, the first medium interface 12 and the conduction chamber 11 are arranged on the first valve body 1e, and the second air channel 17, the third air channel 18, the second medium interface 13, the third medium interface 14 and the fourth medium interface 15 are arranged on the second valve body 1f.

[0053] It can be understood that the sealing connection method of the first valve body 1e and the second valve body 1f includes but is not limited to providing a sealing ring, a rubber sleeve, an interference fit, etc. In this embodiment, the sealing ring 6 is preferably used to achieve the sealing connection between the first valve body 1e and the second valve body 1f, wherein the second valve body 1f is provided with a plug groove 1f1, the first valve body 1e has a plug connector 1e1 adapted to the plug groove 1f1 and inserted into the plug groove 1f1, the sealing ring 6 is sleeved between the plug groove 1f1 and the plug connector 1e1, and the gap between the plug groove 1f1 and the plug connector 1e1 is sealed to achieve the sealing connection between the first valve body 1e and the second valve body 1f, thereby achieving the sealing assembly of the valve body 1.

[0054] In a further preferred embodiment, the plug connector 1e1 includes an inner connector and an outer connector, wherein the inner connector is provided with a partial section of the second air passage 17 directly connected to the second medium opening 112, and is communicated with another partial section of the second air passage 17 connected to the second medium interface 13 on the second valve body 1f after the first valve body 1e and the second valve body 1f are plugged in and matched. A fourth air passage 19 having one end connected to the conduction chamber 11 is provided between the inner connector and the outer connector, and the other end of the fourth air passage 19 is connected to the third air passage 18 on the second valve body 1f after the first valve body 1e and the second valve body 1f are plugged in and matched. Accordingly, the plug-in groove 1f1 has an inner groove and an outer groove corresponding to the inner connector and the outer connector, and the sealing ring 6 is provided with at least two of which sizes correspond to the outer diameters of the inner connector and the outer connector, respectively, so as to seal the gap between the inner connector and the inner groove and the gap between the outer connector and the outer groove after the first valve body 1e and the second valve body 1f are plugged in and matched.

[0055] In addition, in the air valve 1000 of the embodiment of the utility model, the first air channel 16, the second air channel 17, the third air channel 18, and the fourth air channel 19 on the valve body 1 can be set to multiple sections according to needs and the molding requirements of the valve body 1, and further, medium interfaces can be added on the valve body 1 respectively corresponding to the segmented settings of each air channel to further increase the diversity of air path selection of the air valve 1000.

[0056] In some embodiments, please refer to Figure 5 The second air channel 17 on the second valve body 1f includes a second air channel section I 171, a second air channel section II 172 and a second air channel section III 173, and the second air channel section I 171, the second air channel section II 172 and the second air channel section III 173 are connected in sequence.

[0057] Among them, medium interfaces corresponding to the second air duct section I 171, the second air duct section II 172 and the second air duct section III 173 can be further added to the valve body 1, and the added medium interfaces can be connected to an external air bag, an air supply device or an air storage device as needed to further enrich the air path selectivity of the air valve 1000.

[0058] It is worth noting that the air valve 1000 can be applied to the gas distribution device of the pneumatic comfort system, including but not limited to one or more gas distribution devices applied to the pneumatic massage system, the pneumatic side support system and the pneumatic lumbar support system, and the corresponding pneumatic comfort system includes but is not limited to the equipment fields such as the car seats, massage seats, airbag beds, etc.

[0059] The utility model provides an embodiment of a gas distribution device, which includes the above-mentioned gas valve 1000. The structure and function of the gas valve 1000 can refer to the above-mentioned embodiment, and will not be described one by one here. Preferably, the gas valve 1000 can be arranged on the gas distribution device as a main air inlet valve, wherein the gas distribution device can also be provided with multiple gas valves including those for controlling the inflation and deflation of massage air bags, controlling the inflation and deflation of wing support air bags, and controlling the inflation and deflation of lumbar support air bags, and more than one of the multiple medium interfaces including the first medium interface 12, the second medium interface 13, the third medium interface 14, and the fourth medium interface 15 on the gas valve 1000 can be used as a gas source interface to connect the gas supply device and the gas storage device, and the remaining medium interfaces can be selected as needed to connect to multiple gas valves for controlling the inflation and deflation of massage air bags, controlling the inflation and deflation of wing support air bags, and controlling the inflation and deflation of lumbar support air bags.

[0060] The utility model provides an embodiment of a pneumatic comfort system, which includes a first air source device, a second air source device, a first air bag group, a second air bag group and the above-mentioned gas distribution device; wherein, the first air bag group includes at least one first air bag, and the second air bag group includes at least one second air bag; the first air source device is connected to the third medium interface 14, the second air source device is connected to the first medium interface 12, the first air bag group is connected to the second medium interface 13, and the second air bag assembly is connected to the fourth medium interface 15.

[0061] It is worth noting that the first air source device includes but is not limited to: an air pump, an air compressor, an air storage container or a pump-valve integrated device. In this embodiment, the first air source device is preferably an air pump. The second air source device includes but is not limited to: an air pump, an air compressor, an air storage container or a pump-valve integrated device. In this embodiment, the second air source device is preferably an air storage container.

[0062] The first airbag includes but is not limited to massage airbags, waist support airbags, side wing support airbags, etc., which can be specifically defined according to the specific location of the actual airbags and the functions of the airbags at the corresponding locations. In this embodiment, the first airbag is preferably a massage airbag and a waist support airbag. The second airbag includes but is not limited to massage airbags, waist support airbags, side wing support airbags, etc., which can be specifically defined according to the specific location of the actual airbags and the functions of the airbags at the corresponding locations. In this embodiment, the second airbag group is preferably a side wing support airbag.

[0063] In addition, a control valve for controlling the on-off of the air source, such as a stop valve, may be further provided between the second air source device and the first medium interface 12, and between the first air source device and the third medium interface 14. A control valve for controlling the inflation and deflation of the air bag may be further provided between the first air bag and the second medium interface 13, and between the second air bag and the fourth medium interface 15, such as a two-position three-way solenoid valve corresponding to the first air bag being a massage air bag, a three-position three-way solenoid valve corresponding to the first air bag being a waist support air bag, and a three-position three-way solenoid valve corresponding to the second air bag being a wing support air bag.

[0064] In order to facilitate understanding of the working logic of the above-mentioned air valve 1000 in the pneumatic comfort system, the following example is given to illustrate that the second air source device connected to the first medium interface 12 is designated as an air tank, the first air source device connected to the third medium interface 14 is designated as an air pump, the first air bag connected to the second medium interface 13 is designated as a massage air bag and a lumbar support air bag, and the second air bag connected to the fourth medium interface 15 is designated as a wing support air bag. When working, the following first ventilation state and second ventilation state of air path switching may appear:

[0065] First ventilation state: the movable valve core 2 blocks the first medium opening 111, the air pump is connected to the third medium interface 14, the air pump supplies air, the gas enters from the third medium interface 14 and flows into the side wing support air bag connected to the fourth medium interface 15 through the third air channel 18 and the fourth medium interface 15 in sequence, and the gas also flows into the massage air bag and the lumbar support air bag connected to the second medium interface 13 through the third air channel 18, the fourth air channel 19, the second medium opening 112, the second air channel 17, and the second medium interface 13 in sequence, realizing pneumatic massage, pneumatic lumbar support and pneumatic side wing support.

[0066] Second ventilation state: the movable valve core 2 blocks the second medium opening 112, the air pump is connected to the third medium interface 14, the air pump supplies air, and the gas enters from the third medium interface 14 and flows into the wing support air bag connected to the fourth medium interface 15 through the third air channel 18 and the fourth medium interface 15 in sequence, thereby realizing pneumatic wing support; and when supplying air to the air tank, the gas also flows into the air tank connected to the first medium interface 12 through the third air channel 18, the fourth air channel 19, the first medium opening 111, and the first medium interface 12 in sequence; or, the air tank can simultaneously supply air to the wing support air bag quickly, and the gas in the air tank flows into the wing support air bag connected to the fourth medium interface 15 through the first medium interface 12, the first medium opening 111, the gap between the movable valve core 2 and the conducting chamber 11, the fourth air channel 19, the third air channel 18, and the fourth medium interface 15 in sequence, thereby improving the wing support response efficiency.

[0067] It can be understood that in the second ventilation state, when the side wing support needs to respond quickly, the air tank can play the same air supply role as the air pump. For example, a valve is set at the connection between the first medium interface 12 and the air tank to control the connection and disconnection between the first medium interface 12 and the air tank. When the side wing support airbag needs to be inflated quickly, the air pump is started at the same time as the valve is opened. The air pump and the air tank both serve as air supply sources to supply air to the side wing support airbag at the same time, so that the inflation and deployment speed of the side wing support airbag is greatly improved.

[0068] It should be noted that the preferred embodiments of the utility model are given in the specification and drawings of the utility model, but the utility model can be implemented in many different forms and is not limited to the embodiments described in the specification. These embodiments are not used as additional restrictions on the content of the utility model. The purpose of providing these embodiments is to make the understanding of the disclosure of the utility model more thorough and comprehensive. In addition, the above-mentioned technical features continue to be combined with each other to form various embodiments not listed above, which are all regarded as the scope of the description of the utility model; further, for ordinary technicians in this field, they can be improved or transformed according to the above description, and all these improvements and transformations should belong to the scope of protection of the claims attached to the utility model.

Claims

1. A gas valve, characterized in that: Including valve body; The valve body is provided with a conduction chamber, and a first medium interface, a second medium interface, a third medium interface and a fourth medium interface communicated with the conduction chamber; a movable valve core is provided in the conduction chamber; and the third medium interface is communicated with the fourth medium interface; The air valve has a first ventilation state in which the movable valve core cuts off the communication between the communication chamber and the first medium interface, and a second ventilation state in which the movable valve core cuts off the communication between the communication chamber and the second medium interface; when the air valve is in the first ventilation state, the second medium interface is communicated with the third medium interface and the fourth medium interface; when the air valve is in the second ventilation state, the first medium interface is communicated with the third medium interface and the fourth medium interface.

2. The gas valve according to claim 1, characterized in that: A first medium opening and a second medium opening are provided on the wall of the conduction chamber, wherein the first medium opening is communicated with the first medium interface via a first air passage, and the second medium opening is communicated with the second medium interface via a second air passage; wherein the air valve is placed in the first ventilation state by closing the first medium opening and opening the second medium opening by the movable valve core; and the air valve is placed in the second ventilation state by closing the second medium opening and opening the first medium opening by the movable valve core.

3. The gas valve according to claim 2, characterized in that: The valve body is provided with a coil, and the movable valve core is displaced under the excitation of the coil to close the first medium opening or the second medium opening.

4. The gas valve according to claim 3, characterized in that: An elastic reset member is provided; the elastic reset member is operatively connected between the movable valve core and the wall of the conduction chamber to cause the movable valve core to normally close the first medium opening or the second medium opening.

5. The gas valve according to claim 2, characterized in that: A first air pressure sensor is provided for detecting the air pressure in the first airway; and / or a second air pressure sensor is provided for detecting the air pressure in the second airway.

6. The gas valve according to claim 1, characterized in that: The third medium interface is communicated with the fourth medium interface through a third air channel; the communication chamber is communicated with the third air channel through a fourth air channel, so as to be communicated with the third medium interface and the fourth medium interface.

7. The gas valve according to any one of claims 1 to 6, characterized in that: The valve body comprises a first valve body and a second valve body which are sealed and connected; wherein the first medium interface and the conducting chamber are arranged on the first valve body, and the second medium interface, the third medium interface and the fourth medium interface are arranged on the second valve body.

8. A gas distribution device, characterized in that: A gas valve according to any one of claims 1 to 7 is provided.

9. A pneumatic comfort system, characterized in that: The invention comprises a first gas source device, a second gas source device, a first gas bag group, a second gas bag group and the gas distribution device according to claim 8; the first gas bag group comprises at least one first gas bag, and the second gas bag group comprises at least one second gas bag; Wherein, the first air source device is connected to the third medium interface, the second air source device is connected to the first medium interface, the first air bag assembly is connected to the second medium interface, and the second air bag assembly is connected to the fourth medium interface.

10. The pneumatic comfort system according to claim 9, characterized in that: The first gas source device includes an air pump, and the second gas source device includes a gas storage container.

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