Two-position three-way combination valve having self-pressure-maintaining function, and pneumatic system and automobile

Abstract

A two-position three-way combination valve having a self-pressure-maintaining function, and a pneumatic system and an automobile. The two-position three-way combination valve comprises a valve body (1), wherein a mounting space is provided inside the valve body (1); a valve spool (2) is provided inside the mounting space; a first valve port (3) and a second valve port (4) are respectively provided at two ends of the mounting space; the valve body (1) is further provided with a third valve port (5) configured to connect to a gas-consuming assembly; and the third valve port (5) is in communication with the mounting space. Elastic non-return members each comprise an elastic deformation portion (6) and a noise-damping interference portion (7), wherein the elastic deformation portion (6) is provided in the mounting space; and at least one noise-damping interference portion (7) is provided on the elastic deformation portion (6), and is configured to suppress vibration of the elastic deformation portion (6). During use, the elastic deformation portion (6) deforms under the action of airflow pressure in a direction away from the first valve port (3), and in this case, the noise-damping interference portion (7) comes into contact with the valve body (1) or the valve spool (2) so as to suppress vibration generated by the elastic deformation portion (6) under blowing of the airflow.

Description

Two-position three-way combination valve with self-pressure maintaining function, pneumatic system and automobile

[0001] Cross-reference to related applications

[0002] The present application claims priority to the Chinese patent application No. 202422301218.2, filed on September 20, 2024, and entitled "Two-position three-way combination valve with self-pressure maintaining function", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0003] The present application relates to the field of valve noise reduction, in particular to a two-position three-way combination valve with self-pressure maintaining function, a pneumatic system and an automobile. BACKGROUND

[0004] The two-position three-way combination valve is a fluid control element that controls the flow of fluid through the movement of the valve core. In the prior art, a two-position three-way combination valve is provided in the interior of an automobile to inflate and deflate the gas assembly. In order to prevent the reverse flow of gas during the deflation of the air bag, a skirt is usually provided on the sealing cap at the end of the valve core.

[0005] However, during the ventilation process of the two-position three-way combination valve, the high-speed airflow lifts the sealing element, and a sharp noise is generated at the edge position, which affects the performance of the vehicle and the comfort of the passengers when riding.

[0006] CONTENT

[0007] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a two-position three-way combination valve with self-pressure maintaining function, a pneumatic system and an automobile that can solve the above-mentioned technical problems.

[0008] The present application provides a two-position three-way combination valve with self-pressure maintaining function, comprising:

[0009] A valve body, an installation space is provided in the interior of the valve body, a valve core is provided in the interior of 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 further provided on the valve body, the third valve port communicates with the installation space, and the third valve port is configured to connect a gas assembly;

[0010] A control assembly configured to drive the valve core to move;

[0011] An elastic check element provided on the valve core, the elastic check element comprises an elastic deformation part and a sound interference part, the elastic deformation part is annular structure, at least one sound interference part is provided on the elastic deformation part, and the sound interference part is configured to suppress the vibration of the elastic deformation part caused by airflow blowing;

[0012] 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 by the air flow pressure in a direction away from the first valve port, the sound interference part is in contact with the valve body or the valve core, and the first valve port is in communication with the third valve port; when the elastic check member is in the second state, the elastic deformation part is deformed by the air flow pressure in a direction close to the first valve port, the elastic deformation part and the edge of the first valve port form a pressure closed state, and the first valve port is blocked from the third valve port.

[0013] Optionally, one end of the valve core is provided with a first sealing cap, and the other end of the valve core is provided with a second sealing cap; the first sealing cap is arranged between the valve core and the first valve port, and is configured to abut against the first valve port; the second sealing cap is arranged between the valve core and the second valve port, and is configured to abut against the second valve port.

[0014] Optionally, the first sealing cap and / or the second sealing cap are integrally provided with the elastic check member away from one end of the valve core, and a plurality of sound interference parts are circumferentially arranged on the elastic deformation part.

[0015] Optionally, the elastic check member is in a ring structure, is sleeved on the middle part of the valve core, and is located in the mounting space, and the sound interference part abuts against the valve body.

[0016] Optionally, when the elastic check member is in the first state, one end of the sound interference part is connected with the edge of the elastic deformation part, and the other end extends away from the elastic deformation part, and the sound interference part abuts against the valve body.

[0017] Optionally, when the elastic check member is in the first state, one end of the sound interference part is connected with the side of the elastic deformation part away from the first valve port, and the other end extends away from the first valve port, and the sound interference part abuts against the valve core.

[0018] Optionally, the elastic deformation part is in a horn shape, and the sound interference part is in a strip shape or a conical shape.

[0019] Optionally, the control assembly comprises 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, the other end of the elastic member abuts against the first sealing cap, and the elastic member is configured to drive the valve core to reset.

[0020] Optionally, a gas leakage passage is arranged between the third valve port and the second valve port, and the edge of the second valve port is in a polygonal structure.

[0021] Optionally, when the elastic check member is in the second state, the sound-damping interference portion abuts against the valve body or the valve core.

[0022] The embodiment of the present application further provides a pneumatic system comprising the two-position three-way combined valve with the self-pressure maintaining function.

[0023] The embodiment of the present application further provides an automobile comprising a vehicle body and the pneumatic system, wherein the pneumatic system is arranged in the vehicle body.

[0024] The embodiment of the present application has the following beneficial effects:

[0025] The embodiment of the present application provides a two-position three-way combined valve with a self-pressure maintaining function, comprising a valve body and an elastic check member, wherein the inside of the valve body is provided with a mounting space, the inside of the mounting space is provided with a valve core, and the two ends of the mounting space are respectively provided with a first valve port and a second valve port; a third valve port is further arranged on the valve body, the third valve port is communicated with the mounting space, and the third valve port is configured to be connected with a gas using assembly; the elastic check member is arranged on the valve core, the elastic check member comprises an elastic deformation portion and a sound-damping interference portion, the elastic deformation portion is in an annular structure, and at least one sound-damping interference portion is arranged on the elastic deformation portion; the elastic check member has a first state and a second state, in the case of inflating the gas using assembly, the elastic check member is in the first state, the elastic deformation portion is deformed in a direction away from the first valve port under the action of the gas flow pressure, at this time, the sound-damping interference portion is in contact with the valve body or the valve core to suppress the vibration of the elastic deformation portion caused by the gas flow, and the first valve port is communicated with the third valve port to inflate the gas using assembly; after the inflation is completed, the gas using assembly is in a pressure maintaining state, at this time, the gas pressure in the gas using assembly is greater than the atmospheric pressure, at this time, the elastic check member is in the second state, the gas pressure in the gas using assembly deforms the elastic deformation portion in a direction close to the first valve port, the elastic deformation portion and the edge of the first valve port form a pressure closed state, the first valve port is blocked with the third valve port, the third valve port is also blocked with the second valve port, at this time, the gas using assembly has no gas exchange with the outside; in the case of deflating the gas using assembly, the elastic check member is in the second state, the elastic deformation portion is deformed in a direction close to the first valve port under the action of the gas flow pressure, the elastic deformation portion and the edge of the first valve port form a pressure closed state, at this time, the first valve port is blocked with the third valve port, the third valve port is communicated with the second valve port to deflate the gas using assembly to the outside.

[0026] Through the above structure, the sound-absorbing interference part is arranged on the elastic deformation part to suppress the vibration of the elastic deformation part under the airflow blowing, the sharp noise caused by the violent vibration of the elastic deformation part at the edge position is eliminated, and the vehicle performance and the comfort of the passengers when riding are improved. BRIEF DESCRIPTION OF DRAWINGS

[0027] Other features, objects, and advantages of the application will become more apparent from the following detailed description of non-limiting embodiments made with reference to the drawings:

[0028] Fig. 1 is a cross-sectional view of a two-position three-way combination valve with self-pressure maintaining function provided by an embodiment of the application;

[0029] Fig. 2 is a cross-sectional view of a two-position three-way combination valve with self-pressure maintaining function provided by an embodiment of the application;

[0030] Fig. 3 is a schematic view of the connection of the elastic check member and the first sealing cap provided by an embodiment of the application;

[0031] Fig. 4 is a cross-sectional view of the connection of the elastic check member and the first sealing cap provided by an embodiment of the application;

[0032] Fig. 5 is a top view of the connection of the elastic check member and the first sealing cap provided by an embodiment of the application;

[0033] Fig. 6 is a schematic view of the installation of the elastic check member provided by an embodiment of the application;

[0034] Fig. 7 is a schematic view of the connection of the elastic check member and the first sealing cap provided by an embodiment of the application;

[0035] Fig. 8 is a cross-sectional view of the connection of the elastic check member and the first sealing cap provided by an embodiment of the application;

[0036] Fig. 9 is a top view of the connection of the elastic check member and the first sealing cap provided by an embodiment of the application;

[0037] Fig. 10 is a schematic view of the installation of the elastic check member provided by an embodiment of the application;

[0038] Fig. 11 is a cross-sectional view of a two-position three-way combination valve with self-pressure maintaining function in a non-air state provided by an embodiment of the application;

[0039] Fig. 12 is a cross-sectional view of a two-position three-way combination valve with self-pressure maintaining function in an air state provided by an embodiment of the application;

[0040] Fig. 13 is a cross-sectional view of a two-position three-way combination valve with self-pressure maintaining function in a deflation state provided by an embodiment of the application;

[0041] Fig. 14 is a cross-sectional view of a two-position three-way combination valve with self-pressure maintaining function in a non-air state provided by an embodiment of the application;

[0042] Fig. 15 is a cross-sectional view of the two-position three-way combination valve with self-pressure maintaining function in the inflation state according to an embodiment of the present application;

[0043] Fig. 16 is a cross-sectional view of the two-position three-way combination valve with self-pressure maintaining function in the deflation state according to an embodiment of the present application;

[0044] Fig. 17 is a top view of the second valve port according to an embodiment of the present application;

[0045] Fig. 18 is a schematic view of the elastic check member according to an embodiment of the present application;

[0046] Fig. 19 is a cross-sectional view of the elastic check member according to an embodiment of the present application;

[0047] Fig. 20 is a top view of the elastic check member according to an embodiment of the present application;

[0048] Fig. 21 is a schematic view of the connection between the elastic check member and the valve core according to an embodiment of the present application;

[0049] Fig. 22 is a cross-sectional view of the two-position three-way combination valve with self-pressure maintaining function in the un-inflated state according to an embodiment of the present application;

[0050] Fig. 23 is a cross-sectional view of the two-position three-way combination valve with self-pressure maintaining function in the inflation state according to an embodiment of the present application;

[0051] Fig. 24 is a cross-sectional view of the two-position three-way combination valve with self-pressure maintaining function in the deflation state according to an embodiment of the present application.

[0052] In the drawings: 1, valve body; 2, valve core; 3, first valve port; 4, second valve port; 5, third valve port; 6, elastic deformation part; 7, sound-damping interference part; 8, first sealing cap; 9, second sealing cap; 10, coil; 11, elastic member; 12, iron yoke; 13, deflation passage. DETAILED DESCRIPTION

[0053] The present application will be further described below in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are merely intended for the purpose of explaining the present application and are not intended to limit the present application. In addition, it should be noted that only parts related to the present application are shown in the drawings for the purpose of description.

[0054] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0055] Please refer to Figs. 1-10, a two-position three-way combination valve with self-pressure maintaining function according to an embodiment of the present application comprises:

[0056] The valve body 1 is internally provided with a mounting space, the mounting space is internally provided with a valve core 2, and the two ends of the mounting space are respectively provided with a first valve port 3 and a second valve port 4; The valve body 1 is also provided with a third valve port 5, the third valve port 5 is communicated with the mounting space, and the third valve port 5 is configured to connect the gas assembly;

[0057] A control assembly is configured to drive the valve core 2 to move;

[0058] The elastic check member is provided on the valve core 2, and the elastic check member includes an elastic deformation part 6 and a sound interference part 7, the elastic deformation part 6 is annular structure, the elastic deformation part 6 is provided with at least one sound interference part 7, the sound interference part 7 is configured to suppress the vibration of the elastic deformation part 6 under the action of the airflow;

[0059] 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 away from the first valve port 3 under the action of the airflow pressure, the sound interference part 7 is in contact with the valve body 1 or the valve core 2, and the first valve port 3 is communicated with the third valve port 5; When the elastic check member is in the second state, the elastic deformation part 6 is deformed towards the first valve port 3 under the action of the airflow pressure, the elastic deformation part 6 and the edge of the first valve port 3 form a pressure-closed state, and the first valve port 3 is blocked with the third valve port 5.

[0060] Optionally, a plurality of elastic check members can be provided in one mounting space, the elastic deformation part 6 is in the form of a sheet, and the elastic check member is provided with at least one elastic deformation part. Among them, the elastic deformation part 6 can 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 with different diameters. In addition, the multiple layers of annular sheets can also be composed of annular sheets with the same diameter, which is not limited here. The elastic deformation part 6 can also be composed of one layer of annular sheet, of course, the elastic deformation part 6 can also be designed in other shapes, which is not limited here.

[0061] The sound interference part 7 in this embodiment is made of elastic material, of course, the sound interference part 7 can also be made of other sound damping materials, which is not limited here.

[0062] Optionally, in the embodiment, the first valve port 3 is an inflation port, the second valve port 4 is a deflation port, and the third valve port 5 is an outlet port. The valve body 1 is internally provided with a static iron, and the static iron is arranged at one end of the installation space. The first valve port 3 is arranged on the static iron. In the case of inflating the gas-consuming assembly, the high-speed airflow flows into the valve body 1 through the first valve port 3. At this time, the elastic check piece is in the first state, the elastic deformation part 6 is deformed in the direction away from the first valve port 3 under the action of the airflow pressure, and the sound interference part 7 is in contact with the valve body or the valve core at this time to suppress the vibration of the elastic deformation part 6 under the blowing of the airflow. At this time, the first valve port 3 is in communication with the third valve port 5, and the gas-consuming assembly is inflated. After the inflation is completed, the gas-consuming assembly is in a pressure maintaining state. At this time, the gas pressure in the gas-consuming assembly is greater than the atmospheric pressure. At this time, the elastic check piece is in the second state. The gas pressure in the gas-consuming assembly deforms the elastic deformation part 6 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 pressure-closed state. The first valve port 3 and the third valve port 5 are blocked, and the third valve port 5 and the second valve port 4 are also blocked. At this time, the gas-consuming assembly has no gas exchange with the outside. In the case of deflating the gas-consuming assembly, the elastic check piece is in the second state, 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 is in pressure contact with the static iron. The first valve port 3 is blocked with the third valve port 5, the first valve port 3 and the second valve port 4 are in communication, and the gas-consuming assembly is deflated.

[0063] Working principle: When the elastic check piece in the application is in the first state, the sound interference part 7 is of elastic material. When the elastic deformation part 6 is blown up by the airflow, the sound interference part 7 is in contact with the valve body or the valve core 2, which can suppress the vibration of the elastic deformation part 6 under the blowing of the airflow, eliminate the sharp noise caused by the edge of the elastic deformation part 6, and improve the performance of the vehicle and the comfort of the passengers.

[0064] Optionally, one end of the valve core 2 is provided with a first sealing cap 8, and the other end of the valve core 2 is provided with a second sealing cap 9. The first sealing cap 8 is arranged between the valve core 2 and the first valve port 3, and is configured to be in contact with the first valve port 3. The second sealing cap 9 is arranged between the valve core 2 and the second valve port 4, and is configured to be in contact with the second valve port 4.

[0065] Specifically, one end of the valve core 2 is provided with a first sealing cap 8, and the other end of the valve core 2 is provided with a second sealing cap 9; the first sealing cap 8 is arranged between the valve core 2 and the first valve port 3, and the second sealing cap 9 is arranged between the valve core 2 and the second valve port 4. In the case of the combined valve in the 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; in the case of the combined valve in the inflated state, the first sealing cap 8 is separated from the first valve port 3, while the second sealing cap 9 abuts against the second valve port 4, and the first valve port 3 is communicated with the third valve port 5 to inflate the gas assembly. In the case of the combined valve in the deflated state, the valve core 2 moves away from the second valve port 4, at which time the second sealing cap 9 is separated from the second valve port 4, while the first sealing cap 8 abuts against the first valve port 3, and the second valve port 4 is communicated with the third valve port 5 to deflate the gas assembly.

[0066] Optionally, the first sealing cap 8 and / or the second sealing cap 9 is integrally provided with an elastic check member at one end away from the valve core 2, and a plurality of sound interference parts 7 are arranged on the elastic deformation part 6 in a circumferential direction.

[0067] Specifically, as shown in FIGS. 1-2, 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 sound interference parts 7 are arranged on the elastic deformation part 6 in a circumferential direction. In the case of inflating the gas assembly, the high-speed airflow flows from the first valve port 3 to the inside of the valve body 1, and then flows to the gas assembly from the third valve port 5, at which time the elastic deformation part 6 is deformed away from the first valve port 3 under the action of the airflow pressure, and the sound interference parts 7 abut against the valve body 1, thereby inhibiting the vibration of the elastic deformation part 6 and eliminating the sharp noise generated by the violent vibration of the edge position of the elastic deformation part 6. After the inflation is completed, the gas assembly is in a pressure maintaining state, at which time the air pressure in the gas assembly is greater than the atmospheric pressure, at which time the elastic check member is in a second state, and the air pressure in the gas assembly deforms the elastic deformation part 6 toward the first valve port 3, and the elastic deformation part 6 and the edge of the first valve port 3 form a pressure-closed state, the first valve port 3 and the third valve port 5 are blocked, and the third valve port 5 and the second valve port 4 are also blocked, at which time the gas assembly has no gas exchange with the outside. In the case of deflating the gas assembly, the control assembly controls the valve core 2 to move the second sealing cap 9 away from the second valve port 4, the first sealing cap 8 abuts against the first valve port 3, and the second valve port 4 is communicated with the third valve port 5 to deflate the gas assembly; at this time, the elastic deformation part 6 is deformed toward the first valve port 3 under the action of the airflow pressure, and the elastic deformation part 6 and the static iron edge form a pressure-closed state, completely blocking the first valve port 3 and the third valve port 5, preventing the reverse flow of gas.

[0068] Optionally, in the case that the elastic check member is in the first state, one end of the sound-damping interference part 7 is connected with the edge of the elastic deformation part 6, and the other end extends away from the elastic deformation part 6, and the sound-damping interference part 7 abuts against the valve body 1.

[0069] Optionally, as shown in FIGS. 3-6, in the present embodiment, the elastic deformation part 6 is trumpet-shaped, and the sound-damping interference part 7 is strip-shaped; one end of the sound-damping interference part 7 is connected with the edge of the elastic deformation part 6, and when the elastic check member is in the first state, the other end of the sound-damping interference part 7 extends away from the elastic deformation part 6 and abuts against the valve body 1, so as to suppress the vibration of the elastic deformation part 6 and eliminate the sharp noise caused by the violent vibration of the edge of the elastic deformation part 6. Meanwhile, the elastic deformation part 6 is warped away from the first valve port 3, and after the external force is removed, the part can return to the original state due to the elastic property of the material.

[0070] In some embodiments, when the elastic check member is in the first state, one end of the sound-damping interference part 7 is connected with the side of the elastic deformation part 6 away from the first valve port 3, and the other end extends away from the first valve port 3, and the sound-damping interference part 7 abuts against the valve core 2.

[0071] Optionally, as shown in FIGS. 7-10, in the present embodiment, the elastic deformation part 6 is trumpet-shaped, and the sound-damping interference part 7 is cone-shaped; one end of the sound-damping interference part 7 is connected with 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 sound-damping interference part 7 extends away from the first valve port 3 and abuts against the valve core 2, so as to suppress the vibration of the elastic deformation part 6 and eliminate the sharp noise caused by the violent vibration of the edge of the elastic deformation part 6; meanwhile, the elastic deformation part 6 is warped away from the first valve port 3, and after the external force is removed, the part can return to the original state due to the elastic property of the material.

[0072] Of course, the elastic deformation part 6 can also be in other shapes such as hollow cylindrical shape, which is not limited herein. The sound-damping interference part 7 can also be designed in other shapes according to actual installation requirements, which is not limited herein.

[0073] Optionally, the control assembly comprises the coil 10 and the 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 configured to drive the valve core 2 to reset.

[0074] Optionally, the control assembly comprises the coil 10 and the elastic member 11; the coil 10 is arranged around the valve body 1, and an iron yoke 12 is arranged outside the coil 10, and the iron yoke 12 is configured to enhance the electromagnetic force of the coil 10, so that the valve core 2 can be more easily driven.

[0075] Specifically, 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, the other end of the elastic member 11 abuts against the first sealing cap 8, and the elastic member 11 is configured to drive the valve core 2 to reset.

[0076] Specifically, in the case of inflating the gas-consuming assembly, the high-speed airflow flows from the first valve port 3 to the inside of the valve body 1, and then flows to the gas-consuming assembly from the third valve port 5, at this time, the elastic deformation part 6 is deformed away from the first valve port 3 under the action of airflow pressure, and the sound-damping 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 member 11 drives the valve core 2 to reset, and the gas-consuming assembly is in a pressure maintaining state, at this time, the gas pressure in the gas-consuming assembly is greater than the atmospheric pressure, at this time, the elastic check member is in the second state, and the gas pressure in the gas-consuming assembly will deform the elastic deformation part 6 to be close to the first valve port 3, the elastic deformation part 6 and the edge of the first valve port 3 form a pressure-closed state, the first valve port 3 and the third valve port 5 are blocked, and the third valve port 5 and the second valve port 4 are also blocked, at this time, the gas-consuming assembly has no gas exchange with the outside. In the case of deflating the gas-consuming assembly, the coil 10 is energized, 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 communicated with the second valve port 4, the elastic deformation part 6 is deformed to be close to the first valve port under the action of airflow pressure, and the valve core 2 and the edge of the first valve port 3 form a pressure-closed state, the first valve port 3 and the third valve port 5 are blocked, preventing the airflow from flowing in the opposite direction, and the gas in the gas-consuming assembly flows out from the second valve port 4; after the deflation is completed, the coil 10 is de-energized, at this time, the valve core 2 resets.

[0077] Optionally, the third valve port 5 and the second valve port 4 are provided with a deflation channel 13, and the edge of the second valve port 4 is a polygonal structure.

[0078] Specifically, as shown in FIG. 17, the third valve port 5 and the second valve port 4 are provided with a deflation channel 13, and the edge of the second valve port 4 is a polygonal structure, when the valve core 2 moves in the direction of the first valve port 3, the elastic deformation part 6 and the edge of the second valve port 4 will not be completely fitted, thus achieving the deflation of the gas-consuming assembly.

[0079] Please refer to the schematic diagram of a two-position three-way combination valve with self-pressure maintaining function provided in FIGS. 11-16, which is different from the two-position three-way combination valve with self-pressure maintaining function described above in that:

[0080] The first sealing cap 8 in the embodiment is integrally provided with an elastic deformation part 6 at one end away from the valve core 2, and a plurality of sound-damping interference parts 7 are arranged circumferentially 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 a plurality of sound-damping interference parts 7 are arranged circumferentially on the elastic deformation part 6.

[0081] Optionally, in the case that the elastic check member is in the second state, the sound-damping interference portion 7 is in abutment with the valve body 1 or the valve core 2.

[0082] In the present embodiment, the first sealing cap 8 and the second sealing cap 9 are both provided with an elastic check member at the end away from the valve core 2. In the case of inflating the gas-consuming assembly, the high-speed airflow flows from the first valve port 3 to the inside of the valve body 1, at which time the elastic deformation portion 6 connected to the first sealing cap 8 is deformed by the pressure of the airflow in the direction away from the first valve port 3, and the sound-damping interference portion 7 of the first sealing cap 8 is in contact with the valve body 1 or the valve core 2, thereby suppressing the vibration of the elastic deformation portion 6 of the first sealing cap 8. After the inflation is completed, the elastic member 11 drives the valve core 2 to reset, and the gas-consuming assembly is in the pressure-maintaining state, at which time the pressure in the gas-consuming assembly is greater than the atmospheric pressure, and the elastic check member is in the second state, and the pressure in the gas-consuming assembly deforms the elastic deformation portion 6 in the direction close to the first valve port 3, and the elastic deformation portion 6 is in a pressure-closed state with the edge of the first valve port 3, the first valve port 3 is blocked with the third valve port 5, and the third valve port 5 is also blocked with the second valve port 4, at which time the gas-consuming assembly has no gas exchange with the outside. In the case of deflating the gas-consuming assembly, the coil 10 is energized to drive the valve core 2 to move away from the second valve port 4, at which time the elastic deformation portion 6 of the first sealing cap 8 is deformed by the pressure of the airflow in the direction close to the first valve port 3, and the elastic deformation portion 6 is in a pressure-closed state with the edge of the first valve port 3, thereby blocking the connection between the first valve port and the third valve port; at the same time, the elastic deformation portion 6 of the second sealing cap 9 is deformed by the pressure of the airflow in the direction close to the first valve port 3, and the sound-damping interference portion 7 of the second sealing cap 9 is in contact with the valve body 1 or the valve core 2, thereby suppressing the vibration of the elastic deformation portion 6 of the second sealing cap 9.

[0083] Optionally, as shown in FIGS. 11-13, the sound-damping interference portion 7 is in the form of a strip, at which time the sound-damping interference portion 7 is in contact with the valve body 1 when the first sealing cap 8 or the second sealing cap 9 is deformed.

[0084] Optionally, as shown in FIGS. 14-16, the sound-damping interference portion 7 is in the form of a cone, at which time the sound-damping interference portion 7 is in contact with the valve core 2 when the first sealing cap 8 or the second sealing cap 9 is deformed.

[0085] Please refer to the schematic diagrams of a two-position three-way combined valve with self-pressure-maintaining function provided in FIGS. 18-24, which is different from the two-position three-way combined valve with self-pressure-maintaining function described above in that:

[0086] The elastic check member in the present embodiment is in the form of a ring structure, is sleeved in the middle part of the valve core 2, and is located in the installation space, and the sound-damping interference portion 7 is in abutment with the valve body 1.

[0087] Optionally, in the embodiment, the inner part of the valve body 1 is provided with a boss, the elastic deformation part 6 is sleeved on the valve core 2, and the elastic deformation part 6 is located at the boss, and the sound interference part 7 abuts against the side wall of the valve body 1; the elastic deformation part 6 cooperates with the boss to prevent the reverse flow of gas during the deflation of the gas using assembly;

[0088] Specifically, in the case of inflating the gas using assembly, the high-speed airflow flows from the first valve port 3 to the inside of the valve body 1, and then flows to the gas using assembly from the third valve port 5, at this time, the elastic deformation part 6 is deformed in the direction away from the first valve port 3 under the action of airflow pressure, and the sound interference part 7 abuts against the valve body 1, thereby suppressing the vibration of the elastic deformation part 6; after the inflation is completed, the elastic member 11 drives the valve core 2 to reset, and the gas using assembly is in a pressure maintaining state, at this time, the gas pressure in the gas using assembly is greater than the atmospheric pressure, at this time, the elastic check member is in the second state, and the gas pressure in the gas using assembly deforms the elastic deformation part 6 in the direction close to the first valve port 3, the first valve port 3 and the third valve port 5 are blocked, and the third valve port 5 and the second valve port 4 are also blocked, at this time, the gas using assembly has no gas exchange with the outside. Similarly, in the case of deflating the gas using assembly, the coil 10 drives the valve core 2 to move away from the second valve port 4, the second sealing cap 9 is separated from the second valve port 4, at this time, the first sealing cap 8 abuts against the first valve port 3, maintaining the sealing state, the gas in the gas using assembly 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 airflow pressure, and the sound interference part 7 abuts against the valve body 1, thereby suppressing the vibration of the elastic deformation part 6.

[0089] The embodiment of the present application also provides a pneumatic system comprising the two-position three-way combined valve with self-pressure maintaining function. The pneumatic system further comprises a pipeline, a gas using assembly and a gas supply assembly, the gas supply assembly and the gas using assembly are communicated through the pipeline, the gas supply assembly provides gas power for the gas using assembly, and the pipeline is provided with the two-position three-way combined valve with self-pressure maintaining function. Of course, the pneumatic system can further comprise other structures to realize different functions and meet different application scenarios, which are not limited herein.

[0090] In addition, the embodiment of the present application also provides an automobile comprising a vehicle body and the above-mentioned pneumatic system, and the pneumatic system is arranged in the vehicle body.

[0091] The above description is only the preferred embodiment of the present application and the explanation of the applied technical principles. Those skilled in the art should understand that the scope involved in the present application is not limited to the technical solution formed by the specific combination of the above technical features, and also covers other technical solutions formed by any combination of the above technical features or equivalent features without departing from the concept of the present application. For example, the above-mentioned features are replaced with the technical features disclosed in the present application (but not limited to) having similar functions to form a technical solution. Industrial applicability

[0092] In summary, the embodiment of the present application provides a two-position three-way combination valve with self-pressure maintaining function, a pneumatic system and a car. The elastic deformation part is provided with a sound attenuation interference part to suppress the vibration of the elastic deformation part caused by the airflow blowing. The sharp noise caused by the sharp vibration of the elastic deformation part at the edge position is eliminated, and the vehicle performance and the comfort of the passengers during the ride are improved.

Claims

1. A two-position three-way combination valve with self-pressure holding function, characterized in that, The utility model relates to a valve body (1) is provided with the installation space in the inside, the inside of installation space is provided with the valve core (2), and the both ends of installation space are provided with first valve port (3) and second valve port (4) respectively, still be provided with third valve port (5) on the valve body (1), third valve port (5) with installation space intercommunication, and third valve port (5) is configured to connect with gas subassembly, Control assembly is configured to drive the valve core (2) moves, The elastic check member is provided on the valve core (2), and the elastic check member includes an elastic deformation part (6) and a sound interference part (7), the elastic deformation part (6) is annular structure, at least one sound interference part (7) is provided on the elastic deformation part (6), the sound interference part (7) is configured to suppress the vibration of the elastic deformation part (6) under the blowing of air flow, 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 away from the first valve port (3) under the action of air flow pressure, the sound interference part (7) is in contact with the valve body (1) or the valve core (2), the first valve port (3) is in communication with the third valve port (5), when the elastic check member is in the second state, the elastic deformation part (6) is deformed towards the first valve port (3) under the action of air flow pressure, the elastic deformation part (6) forms a pressure-closed state with the edge of the first valve port (3), and the first valve port (3) is blocked from the third valve port (5). One end of the valve core (2) is provided with a first sealing cap (8), and the other end of the valve core (2) is provided with a second sealing cap (9), the first sealing cap (8) is arranged between the valve core (2) and the first valve port (3), and the first sealing cap (8) is configured to abut against the first valve port (3), the second sealing cap (9) is arranged between the valve core (2) and the second valve port (4), and the second sealing cap (9) is configured to abut against the second valve port (4).

2. The two-position three-way combination valve with self-pressure maintaining function according to claim 1, characterized in that, The first sealing cap (8) and / or the second sealing cap (9) are integrally provided with the elastic check member away from one end of the valve core (2), and a plurality of sound interference parts (7) are circumferentially arranged on the elastic deformation part (6).

3. The two-position three-way combination valve with self-pressure maintaining function according to claim 2, characterized in that, The elastic check member is annular structure, the elastic check member is sleeved in the middle part of the valve core (2) and located in the installation space, and the sound interference part (7) abuts against the valve body (1).

4. The two-position three-way combination valve with self-pressure maintaining function according to any one of claims 1-3, characterized in that, When the elastic check member is in the first state, one end of the sound interference part (7) is connected with the edge of the elastic deformation part (6), and the other end extends away from the elastic deformation part (6), and the sound interference part (7) abuts against the valve body (1).

5. The two-position three-way combination valve with self-pressure maintaining function according to any one of claims 1-4, characterized in that, ​ 6. The two-position three-way combination valve with self-pressure maintaining function according to claim 1, characterized in that, In the case that the elastic check member is in the first state, one end of the sound interference part (7) is connected with the elastic deformation part (6) on the side away from the first valve port (3), and the other end extends away from the first valve port (3), and the sound interference part (7) abuts against the valve core (2).

7. The two-position three-way combination valve with self-pressure maintaining function according to claim 5 or 6, characterized in that The elastic deformation part (6) is trumpet-shaped, and the sound interference part (7) is strip-shaped or cone-shaped.

8. The two-position three-way combination valve with self-pressure maintaining function according to any one of claims 1-7, characterized in that, The control assembly comprises 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), the other end of the elastic member (11) abuts against the first sealing cap (8), and the elastic member (11) is configured 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, The third valve port (5) is provided with a gas leakage passage (13) between 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 any one of claims 1-9, characterized in that, In the case that the elastic check member is in the second state, the sound interference part (7) abuts against the valve body (1) or the valve core (2).

11. The two-position three-way combination valve with self-pressure maintaining function according to any one of claims 1-10, characterized in that, The valve body (1) is internally provided with a boss, the elastic deformation part (6) is sleeved on the valve core (2) and located at the boss, and the sound interference part (7) abuts against the side wall of the valve body (1); the elastic deformation part (6) cooperates with the boss to prevent reverse flow of gas during leakage of the gas using assembly.

12. A pneumatic system, characterized by The two-position three-way combination valve with self-pressure maintaining function of any one of claims 1-11.

13. An automobile characterized by comprising: The pneumatic system of claim 12 is arranged in a vehicle body. The pneumatic system of claim 12 is arranged in a vehicle body.

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