Air valve assembly, air source device and pneumatic comfort system

Abstract

The utility model relates to the technical field of fluid control, and discloses an air valve assembly, an air source device and a pneumatic comfort system. The air valve assembly comprises an air valve, a detection cavity and an air pressure sensor, a valve body of the air valve is internally provided with a conduction chamber and a valve element movably arranged in the conduction chamber, the valve body of the air valve is provided with an air inlet, an inflation inlet and an exhaust port which are communicated with the conduction chamber, and the valve element can move under the excitation action of a coil to block the air inlet or the exhaust port; when the air inlet is closed by the valve core, the inflation port is communicated with the exhaust port; when the valve core seals the exhaust port, the inflation port is communicated with the air inlet; a detection cavity communicated with the inflation inlet is formed in the detection cavity, and the air pressure sensor is arranged in the detection cavity. According to the air valve assembly, the inflation inlet of the air valve is connected with the detection cavity, and the air pressure sensor is arranged in the detection cavity of the detection cavity, so that the air pressure of inflation and the air pressure of deflation through the inflation inlet can be detected, and external causes influencing the detection precision are few.

Description

Technical Field

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

[0002] Pneumatic comfort systems, such as pneumatic lumbar support systems, pneumatic massage systems or pneumatic wing support systems, usually use air pumps to supply air to the air bags, and the air valves connecting the air pumps and air bags control the inflation and exhaust of the air bags. Since the users of pneumatic comfort systems are usually relatively fixed, if the air bags can be directly inflated to the user's previous comfortable inflation height through memory control each time the user starts using the pneumatic comfort system, and the air bags are deflated in an orderly manner to fit the user's comfort each time they are exhausted, it will effectively improve the user experience and save debugging time.

[0003] At present, the memory control of the inflation height and inflation and exhaust of the air bag is usually time memory, such as recording the time when the air source device inflates the air bag to the target height for the first time and the time taken for deflation, and using the inflation time as the inflation time of the air bag each subsequent use to make the air bag directly reach the target inflation height, and using the deflation time as the deflation time each time to directly deflate. However, when the inflation height of the air bag is controlled by time memory, when the air supply pressure of the air source device changes, the final inflation height of the air bag will deviate, and there is a problem of poor control accuracy; at the same time, when the deflation time of the air bag is controlled by time memory, the user's sitting posture adjustment during the deflation process will cause the pressure acting on the air bag to change, and the exhaust situation will become complicated, making it difficult to achieve precise control of orderly deflation.

[0004] Although there are also air pressure sensors used in the prior art to detect the inflation pressure of the air bag, the air pressure sensors are usually set inside the air bag or connected to the air inlet of the air valve. Among them, the air pressure sensor set inside the air bag is not convenient for installation and maintenance, and it is easy to form a foreign body sensation on the backrest during use; while the air pressure sensor connected to the air inlet of the air valve can only monitor the inflation pressure of the air bag, and the detection accuracy is affected due to the easy blockage between the valve core and the inner wall of the valve body. Utility Model Content

[0005] In order to solve the deficiencies of the pneumatic comfort system in the prior art in achieving precise memory control and improve the feasibility of precise memory control of the pneumatic comfort system and the experience of the pneumatic comfort system, the utility model provides an air valve assembly, an air source device and a pneumatic comfort system.

[0006] The technical effects to be achieved by the utility model are achieved through the following aspects:

[0007] In a first aspect, the utility model provides a gas valve assembly, comprising:

[0008] An air valve, wherein the valve body of the air valve has a conduction chamber and an air inlet, a charging port and an exhaust port connected to the conduction chamber; a valve core is arranged in the conduction chamber; the air valve has an inflating state in which the valve core blocks the exhaust port and connects the air inlet to the charging port, and an exhausting state in which the valve core blocks the air inlet and connects the exhaust port to the charging port;

[0009] A detection cavity, wherein the detection cavity has a detection cavity in communication with the inflation port;

[0010] and an air pressure sensor, wherein the air pressure sensor is arranged in the detection cavity.

[0011] In some implementations, the detection cavity is integrally formed with the valve body of the gas valve.

[0012] In some implementations, the detection cavity is sealed and connected to the valve body of the gas valve via a first sealing ring.

[0013] In some implementations, a control circuit board is further included, the air pressure sensor is mounted on the control circuit board and electrically connected to the control circuit board, and the detection cavity is sealed and connected to the control circuit board.

[0014] In some implementations, the detection cavity is sealed and connected to the control circuit board via a second sealing ring.

[0015] In some implementations, a receiving groove is provided on the detection cavity, the second sealing ring is embedded in the receiving groove, and an end of the second sealing ring protruding from the receiving groove is sealed and abutted against the control circuit board.

[0016] In some implementations, the air pressure sensor is mounted on the control circuit board via fasteners.

[0017] In a second aspect, the utility model provides an air source device, comprising an air pump and an air valve assembly of any of the above-mentioned implementation modes, wherein the air valve assembly is assembled on the air pump, and the air outlet of the air pump is connected to the air inlet of the air valve.

[0018] In some implementations, the air valve assembly is assembled on the air pump via a valve seat, the valve seat has at least one air flow outlet connected to the air outlet of the air pump, the air valve assembly is fixed on the valve seat, and the air inlet of the air valve of each of the air valve assemblies is respectively connected to one of the air flow outlets.

[0019] In the third aspect, the utility model provides a pneumatic comfort system, comprising an air source device of any of the above-mentioned implementation methods and at least one air bag group, each of the air bag groups having at least one air bag, each of the air valve assemblies being connected to one of the air bag groups, wherein the inflation port of the air valve of each of the air valve assemblies is connected to the air bag ventilation of the corresponding air bag group.

[0020] In summary, the utility model has at least the following benefits:

[0021] (1) In the air valve assembly of the utility model, a detection cavity is connected to the inflation port of the air valve, and an air pressure sensor is arranged in the detection cavity of the detection cavity, which can detect both the air pressure of inflation and the air pressure of deflation through the inflation port, and there are few external factors that affect the detection accuracy.

[0022] The detection cavity is independent of the valve body, which is convenient for the installation and maintenance of the air pressure sensor. In addition, the air pressure sensor is directly assembled on the control circuit board, which reduces the setting of external circuits and saves setting costs.

[0023] (2) The air source device of the utility model integrates the air valve and the air pump, and can be directly used as the air source device and the gas distribution device of the pneumatic comfort system, and effectively saves the installation space of the pneumatic comfort system and reduces the space requirement.

[0024] (3) The pneumatic comfort system of the utility model can accurately realize the memory control of the inflation and exhaust of the air bag through the detection feedback of the air pressure sensor arranged in the detection cavity connected to the inflation port of the air valve. In addition, the air source device is an integrated structure of the integrated valve pump, which can effectively reduce the space requirement and improve the installation adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the gas source device of an embodiment of the utility model;

[0026] Figure 2 for Figure 1 A cross-sectional view of the gas source device shown;

[0027] Figure 3 for Figure 2 An enlarged schematic diagram of the gas source device at position A is shown;

[0028] Figure 4 for Figure 3 An enlarged schematic diagram of the gas source device at point B is shown.

[0029] Mark in the figure: 10, air source device;

[0030] 100, air valve assembly; 110, air valve; 110a, valve body; 111, conduction chamber; 112, air inlet; 113, charging port; 114, exhaust port; 110b, valve core; 110c, coil; 120, detection cavity; 121, detection cavity; 122, accommodating groove; 130, air pressure sensor; 140, control circuit board; 150, second sealing ring; 160, fastener; 170, PIN needle;

[0031] 200, air pump;

[0032] 300, valve seat; 301, pressure relief channel;

[0033] 400. Pressure relief valve. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. The described implementation is a part of the implementation of the utility model, not all of the implementations.

[0035] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents the preferred embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] The air valve assembly 100 of the embodiment of the utility model can be applied to the inflation and deflation control of the air bag of the pneumatic comfort system. Figures 1 to 4 As shown, the air valve assembly 100 includes an air valve 110 , a detection cavity 120 and an air pressure sensor 130 . The valve body 110 a of the air valve 110 has a conduction chamber 111 and a valve core 110 b movably disposed in the conduction chamber 111 .

[0037] There is a gap between the valve core 110 b and the inner wall of the conduction chamber 111 as an air flow channel, or an air flow channel may be opened on the surface or inside of the valve core 110 b.

[0038] In addition, the valve body 110a of the air valve 110 has an air inlet 112, an inflation port 113 and an exhaust port 114 which are connected to the conduction chamber 111. When used in a pneumatic comfort system, the air inlet 112 is connected to the air source device, and the inflation port 113 is connected to the air bag. A coil 110c is provided on the valve body 110a. Specifically, the coil 110c is wound around the valve body 110a and corresponds to the conduction chamber 111. When the coil 110c is energized, a magnetic field is generated, and the valve core 110b is displaced under the excitation of the coil 110c to block the air inlet 112 or the exhaust port 114.

[0039] When the valve core 110b closes the air inlet 112, the inflation port 113 is connected to the exhaust port 114, and the gas in the air bag connected to the inflation port 113 will be discharged to the outside through the inflation port 113 and the exhaust port 114. When the valve core 110b closes the exhaust port 114, the inflation port 113 is connected to the air inlet 112 through the air flow channel, and the gas introduced into the air inlet 112 can flow into the connected inflation port 113 through the air flow channel, and flow to the connected air bag through the inflation port 113 to inflate the air bag.

[0040] Among them, the change of the direction of the current passed into the coil 110c can be controlled to control the valve core 110b to switch and block the air inlet 112 or the exhaust port 114. For example, when a forward current is passed, the forward excitation of the coil 110c prompts the valve core 110b to block the air inlet 112. When a reverse current is passed, the reverse excitation of the coil 110c prompts the valve core 110b to block the exhaust port 114.

[0041] In some other embodiments, an elastic member including a spring may be provided, the two ends of which are respectively operatively connected to the valve core 110b and the inner wall of the conduction chamber 111, so that the valve core 110b normally closes the air inlet 112 or the exhaust port 114. For example, the exhaust port 114 is normally closed, and when the coil 110c is energized, the excitation effect prompts the valve core 110b to overcome the spring force to open the exhaust port 114 and block the air inlet 112, and when the coil 110c stops being energized, the valve core 110b is reset under the action of the elastic member and the exhaust port 114 is closed.

[0042] Optionally, the material of the valve core 110b that can be displaced by the excitation of the coil 110c can be selected from one or more of iron and permanent magnet.

[0043] The detection cavity 120 has a detection cavity 121 connected to the inflation port 113. The air pressure sensor 130 is arranged in the detection cavity 121 to detect the air pressure value of the detection cavity 121. Since the detection cavity 121 is connected to the inflation port 113, the air pressure sensor 130 can detect both the air pressure for inflation and the air pressure for deflation passing through the inflation port 113.

[0044] like Figure 2As shown, in some preferred embodiments, the detection cavity 120 is integrally formed with the valve body 110a of the gas valve 110. In this embodiment, the detection cavity 120 and the valve body 110a of the gas valve 110 can be integrally formed by injection molding, which improves the manufacturing efficiency of the gas valve assembly 100 and the connection sealing performance between the detection cavity 120 and the inflation port 113.

[0045] In other preferred embodiments, the detection cavity 120 is sealed and connected to the valve body 110a of the gas valve 110 through a first sealing ring. The detection cavity 120 and the valve body 110a are assembled after being formed separately, which is convenient for installation and maintenance, and the detection cavity 120 is sealed and connected to the valve body 110a of the gas valve 110 through the first sealing ring, that is, the gap between the detection cavity 120 and the valve body 110a of the gas valve 110 is sealed by the first sealing ring to prevent gas from leaking through the connection between the detection cavity 120 and the valve body 110a of the gas valve 110.

[0046] like Figure 3 and Figure 4 As shown, in some preferred embodiments, the air valve assembly 100 further includes a control circuit board 140. The control circuit board 140 can integrate the control circuit of the air valve 110, the detection feedback circuit of the air pressure sensor 130, and the working control circuit of the air source device including the air pump 200, and the coil 110c of the air valve 110 and the air source device including the air pump 200 are electrically connected to the control circuit board 140. The air pressure sensor 130 is mounted on the control circuit board 140 and electrically connected to the control circuit board 140, and the detection cavity 120 is sealed and connected to the control circuit board 140. In this embodiment, the signal detected by the air pressure sensor 130 is transmitted to the control circuit board 140, specifically, to the detection feedback circuit.

[0047] like Figure 3 and Figure 4 As shown, in some preferred embodiments, the detection cavity 120 is sealed and connected to the control circuit board 140 via a second sealing ring 150 to seal the gap between the detection cavity 120 and the control circuit board 140, thereby preventing gas from leaking through the connection between the detection cavity 120 and the control circuit board 140.

[0048] Specifically, Figure 3 and Figure 4 As shown, a receiving groove 122 is opened on the detection cavity 120, and the second sealing ring 150 is embedded in the receiving groove 122, and the end of the second sealing ring 150 protruding from the receiving groove 122 is sealed against the control circuit board 140 to avoid a gap between the control circuit board 140 and the detection cavity 120, thereby avoiding gas leakage through the connection between the detection cavity 120 and the control circuit board 140, and improving the air pressure detection accuracy of the air pressure sensor 130.

[0049] like Figure 3 and Figure 4 As shown, in some preferred embodiments, the air pressure sensor 130 is mounted on the control circuit board 140 through a fastener 160. It is understood that the fastener 160 can be a screw, a bolt, a clamp or other existing fasteners. Further, the air pressure sensor 130 is specifically inserted into the control circuit board 140 through a PIN pin 170 and fixed by welding to achieve electrical connection between the air pressure sensor 130 and the control circuit board 140.

[0050] The air valve assembly 100 provided by the utility model has a detection cavity 120 connected to the inflation port 113 of the air valve 110, and the air pressure sensor 130 is arranged in the detection cavity 121 of the detection cavity 120, which can detect both the air pressure of inflation and the air pressure of deflation through the inflation port 113, and there are few external factors affecting the detection accuracy. Among them, the detection cavity 120 is independent of the valve body 110a, which is convenient for the installation and maintenance of the air pressure sensor 130. Moreover, the air pressure sensor 130 is directly assembled on the control circuit board 140, which reduces the setting of external circuits and saves the setting cost.

[0051] like Figure 1 and Figure 2 As shown, the utility model also provides an air source device, including an air pump 200 and at least one group of air valve assemblies 100 of any of the above-mentioned embodiments, the air valve assembly 100 is assembled on the air pump 200, so that the air valve assembly 100 and the air pump 200 are integrated, and the air outlet of the air pump 200 is connected to the air inlet 112 of the air valve 110, so that the gas pumped out by the air pump 200 can enter the air valve 110 through the air inlet 112 of the air valve 110 to realize air supply control.

[0052] The air source device of the utility model, the air collecting valve 110 and the air pump 200 are integrated, and can be directly used as the air source device and the gas distribution device of the pneumatic comfort system, and effectively save the installation space of the pneumatic comfort system and reduce the space requirement.

[0053] like Figure 1 and Figure 2 As shown, in some preferred embodiments, the air valve assembly 100 is assembled on the air pump 200 through the valve seat 300, and the valve seat 300 has at least one air flow outlet communicated with the air outlet of the air pump 200, and the air valve assembly 100 is fixed on the valve seat 300. And the air inlet 112 of the air valve 110 of each air valve assembly 100 is respectively communicated with an air flow outlet, so that the air outlet of the air pump 200 is connected to the air inlet 112 of the air valve 110 of each air valve assembly 100 through the air flow outlet of the valve seat 300, so as to realize the installation of the air valve assembly 100 on the air pump 200 through the valve seat 300, and ensure the air supply efficiency of the air pump 200 to the air valve 110 of each air valve assembly 100.

[0054] Specifically, the valve body 110a of the air valve 110 of the air valve assembly 100 is adapted to be plug-in and can be fixed on the valve seat 300 by snap-fitting, wherein the plug-in between the valve body 110a of the air valve 110 and the valve seat 300 is an interference fit or a sealed assembly after plug-in to ensure the ventilation and sealing between the air valve 110 and the valve seat 300.

[0055] Furthermore, the air flow outlet on the valve seat 300 is set to be multiple, and the air valve assembly 100 is set to be multiple, and the multiple air valve assemblies 100 respectively control multiple groups of air supply. The inflation port 113 of the air valve 110 of each air valve assembly 100 is used to connect an air bag group and inflate the air bag of the corresponding air bag group, wherein each air bag group can be provided with at least one air bag, so that the air source device can inflate multiple air bag groups.

[0056] like Figure 1 and Figure 2 As shown, further, a pressure relief channel 301 is provided on the valve seat 300, the pressure relief channel 301 is connected to the air flow outlet, and a pressure relief valve 400 is provided on the pressure relief channel 301. When the air pressure in the air path is too high and exceeds the load of the pressure relief valve 400, the pressure relief valve 400 will automatically open for pressure relief protection.

[0057] like Figure 3 As shown, in some preferred embodiments, the control circuit board 140 is fixedly mounted on the valve seat 300. Of course, the control circuit board 140 is not limited to being fixedly mounted on the valve seat 300. For example, in some other embodiments, the control circuit board 140 is fixedly mounted on the detection cavity 120.

[0058] The utility model also provides a pneumatic comfort system, comprising an air source device of any of the above embodiments and at least one air bag group, each air bag group has at least one air bag, each air valve assembly 100 is connected to an air bag group, wherein the inflation port 113 of the air valve 110 of each air valve assembly 100 is ventilatedly connected to the air bag of the corresponding air bag group. Optionally, the air bags of the air bag group may include at least one of massage air bags, lumbar support air bags, and wing support air bags.

[0059] Furthermore, the inflation port 113 of the air valve 110 can be directly connected to the air bag through the air pipe, that is, the inflation port 113 of the air valve 110 can be connected to the air bag through the air pipe, and the air valve 110 assembled on the air pump 200 directly acts as a control valve to control the inflation and exhaust of the air bag. Alternatively, another gas distribution device can be provided between the inflation pipe of the air valve 110 and the air bag, such as a valve module with multiple gas valves, and the air valve 110 only controls the on and off of the air supply of the air pump 200 to the air bag, while the inflation and exhaust of the air bag are controlled by another gas distribution device.

[0060] The pneumatic comfort system of the utility model can accurately realize the memory control of the inflation and exhaust of the air bag through the detection feedback of the air pressure sensor 130 arranged in the detection cavity 121 connected to the inflation port 113 of the air valve 110. Moreover, the air source device is an integrated structure of the integrated valve pump, which can effectively reduce the space requirement and improve the installation adaptability.

[0061] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0062] Furthermore, the terms “first”, “second”, etc. are merely used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0063] Although the utility model is described in conjunction with the above specific embodiments, it is obvious that those skilled in the art can make many substitutions, modifications and changes based on the above content. Therefore, all such substitutions, improvements and changes are included in the spirit and scope of the appended claims.

Claims

1. A gas valve assembly, characterized in that: include: An air valve (110), wherein a valve body (110a) of the air valve (110) comprises a conduction chamber (111) and an air inlet (112), an air charging port (113) and an air exhaust port (114) which are in communication with the conduction chamber (111); a valve core (110b) is arranged in the conduction chamber (111); the air valve (110) comprises an inflating state in which the valve core (110b) blocks the air exhaust port (114) and enables the air inlet (112) to communicate with the air charging port (113), and an exhaust state in which the valve core (110b) blocks the air inlet (112) and enables the air exhaust port (114) to communicate with the air charging port (113); A detection cavity (120), wherein the detection cavity (120) has a detection cavity (121) in communication with the exhaust and inflation port (113); and an air pressure sensor (130), wherein the air pressure sensor (130) is arranged in the detection cavity (121).

2. The gas valve assembly according to claim 1, characterized in that The detection cavity (120) and the valve body (110a) of the gas valve (110) are integrally formed.

3. The gas valve assembly according to claim 1, characterized in that The detection cavity (120) is sealedly connected to the valve body (110a) of the gas valve (110) via a first sealing ring.

4. The gas valve assembly according to any one of claims 1 to 3, characterized in that: It also includes a control circuit board (140), the air pressure sensor (130) is mounted on the control circuit board (140) and is electrically connected to the control circuit board (140), and the detection cavity (120) is sealed and connected to the control circuit board (140).

5. The gas valve assembly according to claim 4, characterized in that: The detection cavity (120) is sealed and connected to the control circuit board (140) via a second sealing ring (150).

6. The gas valve assembly according to claim 5, characterized in that The detection cavity (120) is provided with a receiving groove (122), the second sealing ring (150) is embedded in the receiving groove (122), and the end of the second sealing ring (150) protruding from the receiving groove (122) is sealed and abutted against the control circuit board (140).

7. The gas valve assembly according to claim 4, characterized in that The air pressure sensor (130) is mounted on the control circuit board (140) via a fastener (160).

8. A gas source device, characterized in that: It comprises an air pump (200) and at least one group of air valve assemblies (100) according to any one of claims 1 to 7, wherein the air valve assembly (100) is assembled on the air pump (200), and the air outlet of the air pump (200) is connected to the air inlet (112) of the air valve (110).

9. The air source device according to claim 8, characterized in that: The air valve assembly (100) is assembled on the air pump (200) via a valve seat (300); the valve seat (300) has at least one air flow outlet connected to an air outlet of the air pump (200); the air valve assembly (100) is fixed on the valve seat (300), and the air inlet (112) of the air valve (110) of each of the air valve assemblies (100) is respectively connected to one of the air flow outlets.

10. A pneumatic comfort system, characterized in that: It comprises the air source device as claimed in claim 8 or 9 and at least one air bag group, each of the air bag groups has at least one air bag, and each of the air valve assemblies (100) is respectively connected to one of the air bag groups, wherein the inflation port (113) of the air valve (110) of each of the air valve assemblies (100) is ventilatedly connected to the air bag of the corresponding air bag group.

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