Two-position three-way combination valve with self-pressure-maintaining function

Abstract

The two-position three-way combination valve with the self-pressure-maintaining function comprises a valve body, an installation space is formed in the valve body, a valve element is arranged in the installation space, and a first valve port and a second valve port are formed in the two ends of the installation space respectively; the valve body is further provided with a third valve port used for being connected with a gas using assembly, and the third valve port communicates with the installation space. The elastic non-return piece comprises an elastic deformation part and at least one silencing interference part, the elastic deformation part is arranged in the mounting space, and the at least one silencing interference part is arranged on the elastic deformation part and used for restraining vibration of the elastic deformation part; in the using process, the elastic deformation part deforms in the direction away from the first valve port under the action of airflow pressure, at the moment, the noise reduction interference part makes contact with the valve body or the valve element so as to restrain vibration generated by the elastic deformation part under airflow blowing, and sharp noise generated by violent vibration generated by the edge position of the elastic deformation part is eliminated; therefore, the vehicle performance and the riding comfort of passengers are improved.

Description

Technical Field

[0001] The present application generally relates to the field of valve noise reduction technology, and in particular to a two-position three-way combination valve with a self-pressure maintaining function. Background Art

[0002] A two-position, three-way combination valve is a fluid control component that controls the flow of fluid through the movement of a valve core. In the prior art, a two-position, three-way combination valve is installed inside a car to inflate and deflate an air assembly. To prevent reverse flow of gas during airbag deflation, a skirt is usually provided on the sealing cap at the end of the valve core. However, during ventilation of the two-position, three-way combination valve, high-speed airflow lifts up the seal, generating a sharp noise at the edge, which in turn affects vehicle performance and passenger comfort. Utility Model Content

[0003] In view of the above-mentioned defects or deficiencies in the prior art, it is desired to provide a two-position three-way combination valve with a self-pressure maintaining function that can solve the above-mentioned technical problems.

[0004] The present application provides a two-position three-way combination valve with a self-pressure-maintaining function, comprising:

[0005] A valve body, wherein an installation space is provided inside the valve body, a valve core is provided inside the installation space, and a first valve port and a second valve port are respectively provided at both ends of the installation space; the valve body is also provided with a third valve port, the third valve port is communicated with the installation space, and the third valve port is used to connect to the gas component;

[0006] A control component, the control component is used to drive the valve core to move;

[0007] An elastic check member, the elastic check member being provided on the valve core, the elastic check member comprising an elastic deformation portion and a noise-reducing interference portion, the elastic deformation portion being an annular structure, and at least one noise-reducing interference portion being provided on the elastic deformation portion, the noise-reducing interference portion being used to suppress vibration of the elastic deformation portion generated by airflow;

[0008] The elastic check member has a first state and a second state. When the elastic check member is in the first state, the elastic deformation part is deformed in a direction away from the first valve port under the action of airflow pressure, the silencer interference part contacts the valve body or the valve core, and the first valve port is connected to the third valve port; when the elastic check member is in the second state, the elastic deformation part is deformed in a direction close to the first valve port under the action of airflow pressure, the elastic deformation part and the edge of the first valve port form a pressurized closed state, and the first valve port is blocked from the third valve port.

[0009] According to the technical solution provided in the present application, a first sealing cap is provided at one end of the valve core, and a second sealing cap is provided at the other end of the valve core; the first sealing cap is provided between the valve core and the first valve port, and the first sealing cap is used to abut against the first valve port; the second sealing cap is provided between the valve core and the second valve port, and the second sealing cap is used to abut against the second valve port.

[0010] According to the technical solution provided in the present application, the first sealing cap and / or the second sealing cap is integrally provided with the elastic check member at one end away from the valve core, and a plurality of the silencer interference portions are circumferentially arranged on the elastic deformation portion.

[0011] According to the technical solution provided in the present application, the elastic check member is an annular structure, the elastic check member is sleeved on the middle part of the valve core and is located in the installation space, and the silencer interference portion abuts against the valve body.

[0012] According to the technical solution provided in this application, when the elastic check member is in the first state, one end of the silencer interference portion is connected to the edge of the elastic deformation portion, and the other end extends away from the elastic deformation portion, and the silencer interference portion abuts against the valve body.

[0013] According to the technical solution provided in the present application, when the elastic check member is in the first state, one end of the silencer interference portion is connected to the side of the elastic deformation portion away from the first valve port, and the other end extends in a direction away from the first valve port, and the silencer interference portion abuts against the valve core.

[0014] According to the technical solution provided in this application, the elastic deformation portion is in a trumpet shape, and the sound-absorbing interference portion is in a strip shape or a cone shape.

[0015] According to the technical solution provided in the present application, the control component includes: a coil and an elastic member, the coil is arranged around the valve body, and an iron yoke is arranged outside the coil; the elastic member is arranged in the first valve port, one end of the elastic member abuts against the valve body, and the other end of the elastic member abuts against the first sealing cap, and the elastic member is used to drive the valve core to reset.

[0016] According to the technical solution provided in the present application, an air release channel is provided between the third valve port and the second valve port, and the edge of the second valve port is a polygonal structure.

[0017] According to the technical solution provided in the present application, when the elastic check member is in the second state, the silencing interference portion abuts against the valve body or the valve core.

[0018] The beneficial effects of this application are:

[0019] The present application provides a two-position, three-way combination valve with a self-pressure-maintaining function, including a valve body and an elastic check member, an installation space is provided inside the valve body, a valve core is provided inside the installation space, and a first valve port and a second valve port are respectively provided at both ends of the installation space; a third valve port is also provided on the valve body, the third valve port is communicated with the installation space, and the third valve port is used to connect an air-using component; the elastic check member is provided on the valve core, the elastic check member includes an elastic deformation part and a silencer interference part, the elastic deformation part has an annular structure, and at least one silencer interference part is provided on the elastic deformation part; the elastic check member has a first state and a second state, when the air-using component is inflated, the elastic check member is in the first state, and the elastic deformation part is deformed in a direction away from the first valve port under the action of the air flow pressure, and at this time the silencer interference part contacts the valve body or the valve core to suppress the elastic deformation. When the air in the air valve is released, the air in the air valve is in a closed state and the air in the air valve is in a closed state, and the air in the air valve is in a closed state when the air in the air valve is in a closed state.

[0020] Through the above structure, the present application provides a silencer interference portion on the elastic deformation portion to suppress the vibration of the elastic deformation portion when blown by the airflow, eliminating the sharp noise caused by the violent vibration of the elastic deformation portion at the edge position, thereby improving the vehicle performance and the comfort of the passengers. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Other features, objects and advantages of the present application will become more apparent upon reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0022] Figure 1 This is a cross-sectional view of the first two-position three-way combination valve with a self-pressure-maintaining function provided in Example 1 of the present application;

[0023] Figure 2 This is a cross-sectional view of a second two-position three-way combination valve with a self-pressure-maintaining function provided in Example 1 of the present application;

[0024] Figure 3 This is a schematic diagram of the connection between the first elastic check member and the first sealing cap provided in Example 1 of the present application;

[0025] Figure 4 This is a cross-sectional view of the connection between the first elastic check member and the first sealing cap provided in Example 1 of the present application;

[0026] Figure 5 This is a top view of the connection between the first elastic check member and the first sealing cap provided in Example 1 of the present application;

[0027] Figure 6 This is a schematic diagram of the installation of the first elastic check member provided in Example 1 of the present application;

[0028] Figure 7 This is a schematic diagram of the connection between the second elastic check member and the first sealing cap provided in Example 1 of the present application;

[0029] Figure 8 This is a cross-sectional view of the connection between the second elastic check member and the first sealing cap provided in Example 1 of the present application;

[0030] Figure 9 2. This is a top view of the connection between the second elastic check member and the first sealing cap provided in Example 1 of the present application;

[0031] Figure 10 This is a schematic diagram of the installation of the second elastic check member provided in Example 1 of the present application;

[0032] Figure 11 This is a cross-sectional view of a third two-position three-way combination valve with a self-pressure-maintaining function provided in Example 2 of the present application in a non-ventilated state;

[0033] Figure 12 This is a cross-sectional view of the third two-position three-way combination valve with a self-pressure-maintaining function provided in Example 2 of the present application in an inflated state;

[0034] Figure 13 This is a cross-sectional view of a third two-position three-way combination valve with a self-pressure-maintaining function provided in Example 2 of the present application in a deflated state;

[0035] Figure 14 This is a cross-sectional view of the fourth two-position three-way combination valve with a self-pressure-maintaining function provided in Example 2 of the present application in a non-ventilated state;

[0036] Figure 15 This is a cross-sectional view of the fourth two-position three-way combination valve with a self-pressure-maintaining function provided in Example 2 of the present application in an inflated state;

[0037] Figure 16 This is a cross-sectional view of the fourth two-position three-way combination valve with a self-pressure-maintaining function provided in Example 2 of the present application in a deflated state;

[0038] Figure 17is a top view of the second valve port provided by the present application;

[0039] Figure 18 Schematic diagram of the elastic check member provided in Example 3 of the present application;

[0040] Figure 19 is a cross-sectional view of the elastic check member provided in Example 3 of the present application;

[0041] Figure 20 is a top view of the elastic check member provided in Example 3 of the present application;

[0042] Figure 21 This is a schematic diagram of the connection between the elastic check member and the valve core provided in Example 3 of the present application;

[0043] Figure 22 This is a cross-sectional view of the fifth two-position three-way combination valve with a self-pressure-maintaining function provided in Example 3 of the present application in a non-ventilated state;

[0044] Figure 23 This is a cross-sectional view of the fifth two-position three-way combination valve with a self-pressure-maintaining function provided in Example 3 of the present application in an inflated state;

[0045] Figure 24 This is a cross-sectional view of the deflated state of the fifth two-position three-way combination valve with a self-pressure-maintaining function provided in Example 3 of the present application;.

[0046] In the figure: 1. Valve body; 2. Valve core; 3. First valve port; 4. Second valve port; 5. Third valve port; 6. Elastic deformation part; 7. Silencing interference part; 8. First sealing cap; 9. Second sealing cap; 10. Coil; 11. Elastic part; 12. Iron yoke; 13. Air release channel. DETAILED DESCRIPTION

[0047] The present application will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely for the purpose of explaining the relevant utility model and are not intended to limit the utility model. It should also be noted that, for ease of description, only the portions relevant to the utility model are shown in the accompanying drawings.

[0048] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0049] Example 1

[0050] Please refer to Figures 1-10 The present application provides a two-position three-way combination valve with a self-pressure-maintaining function, comprising:

[0051] A valve body 1 is provided with an installation space inside the valve body 1, a valve core 2 is provided inside the installation space, and a first valve port 3 and a second valve port 4 are provided at both ends of the installation space respectively; a third valve port 5 is also provided on the valve body 1, the third valve port 5 is communicated with the installation space, and the third valve port 5 is used to connect to the gas component;

[0052] A control component, the control component is used to drive the valve core 2 to move;

[0053] The elastic check member is provided on the valve core 2 and includes an elastic deformation portion 6 and a noise-reducing interference portion 7. The elastic deformation portion 6 is an annular structure and is provided with at least one noise-reducing interference portion 7. The noise-reducing interference portion 7 is used to suppress the vibration of the elastic deformation portion 6 generated by the airflow.

[0054] The elastic check member has a first state and a second state. When the elastic check member is in the first state, the elastic deformation part 6 is deformed in a direction away from the first valve port 3 under the action of the airflow pressure, the silencer interference part 7 contacts the valve body 1 or the valve core 2, and the first valve port 3 is connected to the third valve port 5; when the elastic check member is in the second state, the elastic deformation part 6 is deformed in a direction close to the first valve port 3 under the action of the airflow pressure, and the elastic deformation part 6 and the edge of the first valve port 3 form a pressurized closed state, and the first valve port 3 is blocked from the third valve port 5.

[0055] Specifically, in some embodiments, a plurality of elastic check members may be provided in one installation space, the elastic deformation portion 6 being in the form of a thin sheet, and the elastic check member having at least one elastic deformation portion; wherein the elastic deformation portion 6 may be composed of multiple layers of annular sheets; in this embodiment, the multiple layers of annular sheets are composed of multiple layers of annular sheets of different diameters;

[0056] Specifically, the noise-cancelling interference portion 7 is made of elastic material;

[0057] Specifically, in the present embodiment, the first valve port 3 is the inflation port, the second valve port 4 is the deflation port, and the third valve port 5 is the air outlet port; a static iron is provided inside the valve body 1, and the static iron is provided at one end of the installation space, and the first valve port 3 is opened on the static iron; when the air-using component is inflated, a high-speed airflow flows into the valve body 1 from the first valve port 3, at which time the elastic check member is in the first state, and the elastic deformation portion 6 is deformed in the direction away from the first valve port 3 by the airflow pressure, at which time the silencer interference portion 7 contacts the valve body or the valve core to suppress the vibration of the elastic deformation portion 6 under the blowing of the airflow, and at this time the first valve port 3 is connected to the third valve port 5 to inflate the air-using component; after the inflation is completed, the air-using component is in the pressure-maintaining state, at which time , the air pressure in the air-using component is greater than the atmospheric pressure. At this time, the elastic check member is in the second state. The air pressure in the air-using component will press the elastic deformation part 6 to deform in the direction close to the first valve port 3. The elastic deformation part 6 and the edge of the first valve port 3 form a pressurized closed state, the first valve port 3 is blocked from the third valve port 5, and the third valve port 5 is also blocked from the second valve port 4. At this time, there is no gas exchange between the air-using component and the outside; when the air-using component is deflated, the elastic check member is in the second state, and the elastic deformation part 6 is deformed in the direction close to the first valve port 3 under the action of the air flow pressure. The elastic deformation part 6 is pressed and fits with the static iron, the first valve port 3 is blocked from the third valve port 5, the first valve port 3 and the second valve port 4 are connected, and the air-using component deflates to the outside;

[0058] Working principle: When the elastic check member described in this application is in the first state, since the silencer interference part 7 is made of elastic material, when the elastic deformation part 6 is blown up by the airflow, the silencer interference part 7 abuts against the valve body or valve core 2, which can suppress the vibration of the elastic deformation part 6 under the blowing of the airflow, and eliminates the sharp noise caused by the violent vibration at the edge of the elastic deformation part 6, thereby improving the vehicle performance and the comfort of the passengers when riding; when the silencer interference part 7 abuts against the valve body 1 or the valve core 2 when not affected by the airflow, since the silencer interference part 7 is made of elastic material, it has a certain deformation margin, which will not hinder the deformation of the elastic deformation part 6, so that the elastic deformation part 6 can be blown up by the airflow.

[0059] In some embodiments, a first sealing cap 8 is provided at one end of the valve core 2, and a second sealing cap 9 is provided at the other end of the valve core 2; the first sealing cap 8 is provided between the valve core 2 and the first valve port 3, and the first sealing cap 8 is used to abut against the first valve port 3; the second sealing cap 9 is provided between the valve core 2 and the second valve port 4, and the second sealing cap 9 is used to abut against the second valve port 4.

[0060] Specifically, a first sealing cap 8 is provided at one end of the valve core 2, and a second sealing cap 9 is provided at the other end of the valve core 2; the first sealing cap 8 is provided between the valve core 2 and the first valve port 3, and the second sealing cap 9 is provided between the valve core 2 and the second valve port 4; when the combination valve is in an unventilated state, the first sealing cap 8 abuts against the first valve port 3, and the second sealing cap 9 abuts against the second valve port 4; when the combination valve is in an inflated state, the first sealing cap 8 separates from the first valve port 3, and at the same time, the second sealing cap 9 abuts against the second valve port 4, and the first valve port 3 is connected to the third valve port 5 to inflate the air-using component; when the combination valve is in a deflated state, the valve core 2 moves away from the second valve port 4, and at this time the second sealing cap 9 separates from the second valve port 4, and at the same time, the first sealing cap 8 abuts against the first valve port 3, and the second valve port 4 is connected to the third valve port 5, causing the air-using component to be deflated.

[0061] In some embodiments, an elastic check piece is integrally provided at one end of the first sealing cap 8 and / or the second sealing cap 9 away from the valve core 2 , and a plurality of noise-absorbing interference portions 7 are circumferentially arranged on the elastic deformation portion 6 .

[0062] Specifically, such as Figure 1-Figure 2 As shown, the first sealing cap 8 is integrally provided with an elastic deformation part 6 at one end close to the first valve port 3, and a plurality of noise-absorbing interference parts 7 are arranged on the circumference of the elastic deformation part 6. When the air-using component is inflated, high-speed air flows from the first valve port 3 to the inside of the valve body 1, and then flows from the third valve port 5 to the air-using component. At this time, the elastic deformation part 6 is deformed in the direction away from the first valve port 3 by the air flow pressure, and the noise-absorbing interference part 7 abuts against the valve body 1, thereby suppressing the vibration of the elastic deformation part 6 and eliminating the sharp noise caused by the violent vibration of the edge position of the elastic deformation part 6; after the inflation is completed, the air-using component is in a pressure-maintaining state. At this time, the air pressure in the air-using component is greater than the atmospheric pressure. At this time, the elastic check member is in the second state, and the air pressure in the air-using component will press The elastic deformation part 6 is deformed in the direction close to the first valve port 3, and the elastic deformation part 6 and the edge of the first valve port 3 form a pressurized closed state, the first valve port 3 is blocked from the third valve port 5, and the third valve port 5 is also blocked from the second valve port 4. At this time, there is no gas exchange between the gas component and the outside; when the gas component is deflated, the control component controls the valve core 2 to drive the second sealing cap 9 to move away from the second valve port 4, the first sealing cap 8 abuts against the first valve port 3, the second valve port 4 and the third valve port 5 are connected, and the gas component deflates toward the second valve port 4; at this time, the elastic deformation part 6 is deformed in the direction close to the first valve port 3 under the action of the airflow pressure, and the elastic deformation part 6 and the edge of the static iron form a pressurized closed state, completely blocking the first valve port 3 and the third valve port 5, and preventing the gas from flowing in the opposite direction.

[0063] In some embodiments, when the elastic check member is in the first state, one end of the silencing interference portion 7 is connected to the edge of the elastic deformation portion 6, and the other end extends away from the elastic deformation portion 6, and the silencing interference portion 7 abuts against the valve body 1.

[0064] Specifically, such as Figure 3-Figure 6 As shown, in this embodiment, the elastic deformation portion 6 is trumpet-shaped and the silencer interference portion 7 is strip-shaped; one end of the silencer interference portion 7 is connected to the edge of the elastic deformation portion 6, and when the elastic check member is in the first state, the other end of the silencer interference portion 7 extends in a direction away from the elastic deformation portion 6 and abuts against the valve body 1 to suppress the vibration of the elastic deformation portion 6 and eliminate the sharp noise caused by the violent vibration of the edge position of the elastic deformation portion 6; at the same time, the elastic deformation portion 6 is tilted in a direction away from the first valve port 3; when the external force is removed, due to the elastic properties of its material, this part can return to its original state.

[0065] In some embodiments, when the elastic check member is in the first state, one end of the silencer interference portion 7 is connected to the side of the elastic deformation portion 6 away from the first valve port 3, and the other end extends in a direction away from the first valve port 3, and the silencer interference portion 7 abuts against the valve core 2.

[0066] Specifically, such as Figure 7-10 As shown, in this embodiment, the elastic deformation part 6 is trumpet-shaped and the silencer interference part 7 is cone-shaped; one end of the silencer interference part 7 is connected to the side of the elastic deformation part 6 away from the first valve port 3, and when the elastic check member is in the first state, the other end of the silencer interference part 7 extends in the direction away from the first valve port 3 and abuts against the valve core 2 to suppress the vibration of the elastic deformation part 6 and eliminate the sharp noise caused by the violent vibration of the edge position of the elastic deformation part 6; at the same time, the elastic deformation part 6 is tilted in the direction away from the first valve port 3; when the external force is removed, due to the elastic properties of its material, this part can return to its original state.

[0067] In some embodiments, the control component includes: a coil 10 and an elastic member 11, the coil 10 is arranged around the valve body 1, and an iron yoke 12 is arranged outside the coil 10; the elastic member 11 is arranged in the first valve port 3, one end of the elastic member 11 abuts against the valve body 1, and the other end of the elastic member 11 abuts against the first sealing cap 8, and the elastic member 11 is used to drive the valve core 2 to reset.

[0068] Specifically, the control assembly includes: a coil 10 and an elastic member 11. The coil 10 is arranged around the valve body 1. An iron yoke 12 is provided outside the coil 10. The iron yoke 12 is used to enhance the electromagnetic force of the coil 10 so that the valve core 2 can be driven more easily.

[0069] Specifically, the elastic member 11 is disposed in the first valve port 3 , one end of the elastic member 11 abuts against the valve body 1 , and the other end of the elastic member 11 abuts against the first sealing cap 8 , and the elastic member 11 is used to drive the valve core 2 to reset;

[0070] Specifically, when the air-using component needs to be inflated, a high-speed airflow flows from the first valve port 3 to the inside of the valve body 1, and then flows from the third valve port 5 to the air-using component. At this time, the elastic deformation part 6 is deformed in the direction away from the first valve port 3 by the airflow pressure, and the silencer interference part 7 abuts against the valve body 1 or the valve core 2, thereby suppressing the vibration of the elastic deformation part 6; after the inflation is completed, the elastic part 11 drives the valve core 2 to reset, and the air-using component is in a pressure-maintaining state. At this time, the air pressure in the air-using component is greater than the atmospheric pressure. At this time, the elastic check member is in the second state, and the air pressure in the air-using component will press the elastic deformation part 6 to deform in the direction close to the first valve port 3, and the elastic deformation part 6 and the edge of the first valve port 3 are shaped Into a pressurized closed state, the first valve port 3 is blocked from the third valve port 5, and the third valve port 5 is also blocked from the second valve port 4. At this time, there is no gas exchange between the gas component and the outside; when the gas component needs to be deflated, the coil 10 is energized, and the coil 10 drives the valve core 2 to move away from the second valve port 4. At this time, the third valve port 5 is connected to the second valve port 4, and the elastic deformation part 6 is deformed toward the first valve port under the action of the airflow pressure, and cooperates with the valve core 2 and the edge of the first valve port 3 to form a pressurized closed state, the first valve port 3 and the third valve port 5 are blocked to prevent the airflow from flowing in the opposite direction, and the gas in the gas component flows out from the second valve port 4; after the deflation is completed, the coil 10 is de-energized, and the valve core 2 is reset.

[0071] In some embodiments, an air release channel 13 is provided between the third valve port 5 and the second valve port 4 , and the edge of the second valve port 4 is a polygonal structure.

[0072] Specifically, such as Figure 17 As shown, a degassing channel 13 is provided between the third valve port 5 and the second valve port 4. The edge of the second valve port 4 is a polygonal structure. When the valve core 2 moves toward the first valve port 3, the elastic deformation portion 6 and the edge of the second valve port 4 will not be completely fitted, so the air-using component can be degassed.

[0073] Example 2

[0074] Please refer to Figures 11-16 A schematic diagram of a two-position three-way combination valve with a self-pressure-maintaining function is provided. The similarities between this embodiment and embodiment 1 are not repeated here. The differences are as follows:

[0075] The first sealing cap 8 is integrally provided with an elastic deformation part 6 at one end away from the valve core 2, and multiple silencer interference parts 7 are circumferentially provided on the elastic deformation part 6; at the same time, the second sealing cap 9 is integrally provided with an elastic deformation part 6 at one end away from the valve core 2, and multiple silencer interference parts 7 are circumferentially provided on the elastic deformation part 6.

[0076] In some embodiments, when the elastic check member is in the second state, the silencing interference portion 7 abuts against the valve body 1 or the valve core 2 .

[0077] In this embodiment, the first sealing cap 8 and the second sealing cap 9 are both provided with elastic check members at one end away from the valve core 2. When the air-using component is inflated, a high-speed airflow flows from the first valve port 3 to the inside of the valve body 1. At this time, the elastic deformation part 6 connected to the first sealing cap 8 is deformed in the direction away from the first valve port 3 by the airflow pressure, and the corresponding silencer interference part 7 on the first sealing cap 8 contacts the valve body 1 or the valve core 2 to suppress the vibration of the elastic deformation part 6 on the first sealing cap 8; after the inflation is completed, the elastic member 11 drives the valve core 2 to reset, and the air-using component is in a pressure-maintaining state. At this time, the air pressure in the air-using component is greater than the atmospheric pressure. At this time, the elastic check member is in the second state, and the air pressure in the air-using component will press the elastic deformation part 6 to deform in the direction close to the first valve port 3. The elastic deformation part 6 and the first valve port 3 When the air in the valve body 1 is in the closed position, the spring 12 is in the closed position, and the air inlet 3 is in the closed position, so the air inlet 3 ...

[0078] In some embodiments, as Figure 11-13 As shown, the noise-reducing interference portion 7 is strip-shaped. At this time, when the first sealing cap 8 or the second sealing cap 9 is deformed, the noise-reducing interference portion 7 contacts the valve body 1;

[0079] In some embodiments, as Figure 14-16 As shown, the noise-absorbing interference portion 7 is conical. At this time, when the first sealing cap 8 or the second sealing cap 9 is deformed, the noise-absorbing interference portion 7 contacts the valve core 2.

[0080] Example 3

[0081] Please refer to Figures 18-24A schematic diagram of a two-position three-way combination valve with a self-pressure-maintaining function is provided. The similarities between this embodiment and embodiment 1 are not repeated here. The differences are as follows:

[0082] The elastic check member is an annular structure. The elastic check member is sleeved on the middle part of the valve core 2 and is located in the installation space. The silencer interference portion 7 is in contact with the valve body 1 .

[0083] Specifically, in this embodiment, a boss is provided inside the valve body 1, and an elastic deformation portion 6 is sleeved on the valve core 2. The elastic deformation portion 6 is located on the boss, and the noise-absorbing interference portion 7 abuts against the side wall of the valve body 1. The elastic deformation portion 6 cooperates with the boss to prevent reverse flow of gas during the deflating process of the gas-using component.

[0084] Specifically, when the air-using component is inflated, a high-speed airflow flows from the first valve port 3 to the inside of the valve body 1, and then flows from the third valve port 5 to the air-using component. At this time, the elastic deformation part 6 is deformed in the direction away from the first valve port 3 by the airflow pressure, and the silencer interference part 7 abuts against the valve body 1, suppressing the vibration of the elastic deformation part 6; after the inflation is completed, the elastic part 11 drives the valve core 2 to reset, and the air-using component is in a pressure-maintaining state. At this time, the air pressure in the air-using component is greater than the atmospheric pressure. At this time, the elastic check member is in the second state, and the air pressure in the air-using component will press the elastic deformation part 6 to deform in the direction close to the first valve port 3. The first valve port 3 is blocked from the third valve port 5, and the third valve port 5 is also blocked from the second valve port 4. At this time, there is no gas exchange between the gas component and the outside. Similarly, when the gas component is deflated, the coil 10 drives the valve core 2 to move away from the second valve port 4, and the second sealing cap 9 is separated from the second valve port 4. At this time, the first sealing cap 8 abuts on the first valve port 3 to maintain a sealed state, and the gas in the gas component flows out to the second valve port 4. At this time, the elastic deformation part 6 is deformed in the direction close to the first valve port 3 under the action of the air flow pressure, and the silencer interference part 7 abuts on the valve body 1, thereby suppressing the vibration of the elastic deformation part 6.

[0085] The above description is merely a preferred embodiment of the present application and an illustration of the technical principles employed. Those skilled in the art should understand that the scope of the utility model disclosed in this application is not limited to the technical solutions formed by the specific combination of the above-mentioned technical features, but also encompasses other technical solutions formed by any combination of the above-mentioned technical features or their equivalents without departing from the concept of the utility model. For example, a technical solution formed by replacing the above-mentioned features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A two-position three-way combination valve with a self-pressure-maintaining function, characterized in that: include: A valve body (1), wherein an installation space is provided inside the valve body (1), a valve core (2) is provided inside the installation space, and a first valve port (3) and a second valve port (4) are provided at both ends of the installation space; a third valve port (5) is also provided on the valve body (1), the third valve port (5) is communicated with the installation space, and the third valve port (5) is used to connect to a gas component; A control component, the control component is used to drive the valve core (2) to move; An elastic check member, the elastic check member being provided on the valve core (2), the elastic check member comprising an elastic deformation portion (6) and a noise-reducing interference portion (7), the elastic deformation portion (6) being an annular structure, at least one noise-reducing interference portion (7) being provided on the elastic deformation portion (6), the noise-reducing interference portion (7) being used to suppress vibration of the elastic deformation portion (6) generated by airflow; The elastic check member has a first state and a second state. When the elastic check member is in the first state, the elastic deformation portion (6) is deformed in a direction away from the first valve port (3) by the airflow pressure, the silencer interference portion (7) contacts the valve body (1) or the valve core (2), and the first valve port (3) and the third valve port (5) are connected; when the elastic check member is in the second state, the elastic deformation portion (6) is deformed in a direction close to the first valve port (3) by the airflow pressure, the elastic deformation portion (6) and the edge of the first valve port (3) form a pressurized closed state, and the first valve port (3) and the third valve port (5) are blocked.

2. A two-position three-way combination valve with a self-pressure-maintaining function according to claim 1, characterized in that: A first sealing cap (8) is provided at one end of the valve core (2), and a second sealing cap (9) is provided at the other end of the valve core (2); the first sealing cap (8) is provided between the valve core (2) and the first valve port (3), and the first sealing cap (8) is used to abut against the first valve port (3); the second sealing cap (9) is provided between the valve core (2) and the second valve port (4), and the second sealing cap (9) is used to abut against the second valve port (4).

3. A two-position three-way combination valve with a self-pressure-maintaining function according to claim 2, characterized in that: The elastic check piece is integrally provided at one end of the first sealing cap (8) and / or the second sealing cap (9) away from the valve core (2), and a plurality of the muffler interference portions (7) are circumferentially arranged on the elastic deformation portion (6).

4. A two-position three-way combination valve with a self-pressure-maintaining function according to claim 1, characterized in that: The elastic check member is an annular structure, is sleeved on the middle of the valve core (2), and is located in the installation space, and the muffler interference portion (7) is in contact with the valve body (1).

5. The two-position three-way combination valve with self-pressure maintaining function according to claim 1, characterized in that: When the elastic check member is in the first state, one end of the noise-absorbing interference portion (7) is connected to the edge of the elastic deformation portion (6), and the other end extends in a direction away from the elastic deformation portion (6), and the noise-absorbing interference portion (7) abuts against the valve body (1).

6. The two-position three-way combination valve with self-pressure maintaining function according to claim 1, characterized in that: When the elastic check member is in the first state, one end of the silencer interference portion (7) is connected to the side of the elastic deformation portion (6) away from the first valve port (3), and the other end extends in a direction away from the first valve port (3), and the silencer interference portion (7) abuts against the valve core (2).

7. A two-position three-way combination valve with a self-pressure-maintaining function according to claim 5 or 6, characterized in that: The elastic deformation portion (6) is in a trumpet shape, and the noise-absorbing interference portion (7) is in a strip shape or a cone shape.

8. The two-position three-way combination valve with self-pressure maintaining function according to claim 1, characterized in that: The control component comprises: a coil (10) and an elastic member (11), wherein the coil (10) is arranged around the valve body (1), and an iron yoke (12) is arranged outside the coil (10); the elastic member (11) is arranged in the first valve port (3), one end of the elastic member (11) abuts against the valve body (1), and the other end of the elastic member (11) abuts against the first sealing cap (8), and the elastic member (11) is used to drive the valve core (2) to reset.

9. The two-position three-way combination valve with self-pressure maintaining function according to claim 4, characterized in that: An air release channel (13) is provided between the third valve port (5) and the second valve port (4), and the edge of the second valve port (4) is a polygonal structure.

10. The two-position three-way combination valve with self-pressure maintaining function according to claim 1, characterized in that: When the elastic check member is in the second state, the muffler interference portion (7) abuts against the valve body (1) or the valve core (2).

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