An electromagnetic valve

Abstract

The utility model relates to valve pump technical field discloses an electromagnetic valve, the electromagnetic valve of above -mentioned includes first valve body, second valve body, valve core and coil. Second valve body is connected in first valve body, and the through -going chamber is formed with commonly, and second valve body is opened with first air inlet, second air inlet and air outlet that communicate with the through -going chamber, valve core sets up in the through -going chamber, and can selectively close first air inlet or second air inlet, the coil is around the outer periphery of first valve body. The utility model discloses an electromagnetic valve, through the first air inlet, second air inlet and air outlet are all opened in second valve body, and are arranged in the same side of electromagnetic valve, make gas path arrangement more concentrated, effectively reduce the overall space of electromagnetic valve, and then reduce the occupation space of valve pump whole, make it can adapt to the use scene of smaller installation space.

Description

Technical Field

[0001] This utility model relates to the field of valve and pump technology, and in particular to a solenoid valve. Background Technology

[0002] The integrated valve-pump structure combines an air pump and a solenoid valve, enabling direct control of inflation, pressure holding, and deflation of air-using units such as airbags, air chambers, and pneumatic actuators through their synergistic action. It is widely used in portable medical devices, small automated equipment, and consumer electronics.

[0003] However, in existing integrated valve-pump structures, the air inlet and outlet of the solenoid valve are generally designed to be on opposite sides. That is, the air inlet is connected to the air outlet of the pump via a pipe or air passage, with the inlet located on one side of the solenoid valve and the outlet on the other side, achieving a unidirectional airflow design. This arrangement requires additional space for the coil and results in a dispersed air passage layout, increasing the overall space occupied by the valve-pump system and making it unsuitable for applications with limited installation space. Utility Model Content

[0004] To address the shortcomings of the prior art, this utility model provides a solenoid valve. By opening the first air inlet, the second air inlet, and the air outlet on the second valve body and arranging them on the same side of the solenoid valve, the air path arrangement is more concentrated, effectively reducing the overall space occupied by the solenoid valve, and thus reducing the overall space occupied by the valve pump, making it suitable for application scenarios with limited installation space.

[0005] The technical effect to be achieved by this utility model is realized through the following technical solution: This utility model provides a solenoid valve, comprising: First valve body; The second valve body is connected to the first valve body and together they form a conduction chamber. The second valve body has a first air inlet, a second air inlet, and an air outlet that communicate with the conduction chamber. A valve core, disposed within the conduction chamber, which can selectively close either the first air inlet or the second air inlet; and A coil, the coil being wound around the outer periphery of the first valve body.

[0006] In some implementations, the valve core has a valve stem for closing the first air inlet or the second air inlet, and a gas flow channel is formed between the valve stem and the inner wall of the second valve body.

[0007] In this implementation, the gas flow channel formed between the valve stem and the inner wall of the second valve body provides a smooth passage for gas flow. When inflating, the gas can enter the outlet from the first inlet through this gas flow channel; when evacuating, the gas enters the outlet from the second inlet through the gas flow channel, ensuring the high efficiency of gas transmission and reducing resistance and energy loss during gas flow.

[0008] In some implementations, the valve core further includes a resilient abutment that covers the free end of the valve stem.

[0009] In this implementation, the elastic contact member has elastic deformation capability. When the valve stem contacts the first air inlet or the second air inlet, it can adaptively deform according to the slight undulations of the contact surface and closely fit the edge of the first air inlet or the second air inlet.

[0010] In some implementations, the valve core includes a first core and a second core, the first core being located inside the first valve body and the second core being located inside the second valve body, and the first core and the second core being connected by a rod, with a gas flow channel formed between the rod and the inner wall of the second valve body.

[0011] In some implementations, the second valve body is further provided with a first air inlet, a second air inlet, an air outlet, a first flow channel, a second flow channel, and a third flow channel; The first air intake interface is connected to the first air inlet through the first flow channel, the second air intake interface is connected to the second air inlet through the second flow channel, and the air outlet interface is connected to the air outlet through the third flow channel.

[0012] In some implementations, the first flow channel and the third flow channel extend in the same direction.

[0013] In this implementation, the first flow channel and the third flow channel are arranged in parallel to each other. The parallel layout reduces the waste of gaps between the flow channels and avoids the redundant space added to avoid other flow channels when they are not arranged in parallel, thereby compressing the overall volume of the second valve body.

[0014] In some implementations, the valve core has a venting or deflation state that closes the first air inlet to allow the second air inlet and the air outlet to be connected, and a filling state that closes the second air inlet to allow the first air inlet and the air outlet to be connected.

[0015] In this implementation, the valve core closes the first air inlet in the evacuation state, making the second air inlet and the air outlet connected. In the inflation state, the valve core closes the second air inlet, making the first air inlet and the air outlet connected. This allows for flexible switching of the air path, thereby realizing multiple air path control functions such as inflation, pressure holding, evacuation, and deflation of the gas-using unit.

[0016] In some implementations, the solenoid valve further includes an elastic element, the opposite ends of which abut against the valve core and the inner wall of the first valve body, respectively.

[0017] In some implementations, the second valve body includes a first housing and a second housing, the second housing being connected to the first housing, the first valve body being connected to the second housing, the second air inlet and the air outlet being located in the first housing, and the first air inlet being located in the second housing.

[0018] In some implementations, a first seal is provided between the first housing and the second housing.

[0019] In summary, this utility model has at least the following advantages: The solenoid valve provided by this utility model, by having the first air inlet, the second air inlet, and the air outlet all located on the second valve body and arranged on the same side of the solenoid valve, makes the air path arrangement more concentrated, effectively reducing the overall space occupied by the solenoid valve, and consequently reducing the overall space occupied by the valve pump, making it suitable for applications with limited installation space. Furthermore, the coil is wound around the outer periphery of the first valve body, and its arrangement does not interfere with the first air inlet, the second air inlet, and the air outlet, ensuring the functional reliability of the solenoid valve during charging, pressure holding, evacuation, and degassing processes. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the solenoid valve according to an embodiment of the present utility model; Figure 2 for Figure 1 A cross-sectional schematic diagram of the solenoid valve shown. Figure 3 for Figure 1 Another cross-sectional schematic diagram of the solenoid valve shown; Figure 4 for Figure 1 The exploded view of the solenoid valve is shown.

[0021] Marked in the image: 100. First valve body; 110. Second seal; 200, Second valve body; 201, Conductor chamber; 202, First air inlet; 203, Second air inlet; 204, Air outlet; 205, Gas flow channel; 210, First air inlet interface; 220, Second air inlet interface; 230, Air outlet interface; 240, First flow channel; 250, Second flow channel; 260, Third flow channel; 270, First housing; 280, Second housing; 290, First seal; 300, Valve core; 310, Valve stem; 320, Elastic abutment; 330, First core; 340, Second core; 350, Stem; 400, coil; 500. Elastic components. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. The described embodiments are some, but not all, of the embodiments of this utility model.

[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0024] Example 1: Please see the appendix Figure 1 ~Appendix Figure 4 The solenoid valve of this utility model includes a first valve body 100, a second valve body 200, a valve core 300, and a coil 400.

[0025] In this regard, please combine Figure 2 , Figure 3 and Figure 4 , Figure 2 , Figure 3 and Figure 4 The diagram illustrates the structural relationship between the first valve body 100, the second valve body 200, the valve core 300, and the coil 400 in this embodiment of the present invention. Specifically, the second valve body 200 is connected to the first valve body 100 and together they form a conductive chamber 201. The second valve body 200 has a first air inlet 202, a second air inlet 203, and an air outlet 204 that communicate with the conductive chamber 201. The valve core 300 is disposed within the conductive chamber 201 and can selectively close the first air inlet 202 or the second air inlet 203. The coil 400 is wound around the outer periphery of the first valve body 100.

[0026] In this embodiment, the solenoid valve also includes an elastic element 500. The two opposite ends of the elastic element 500 abut against the inner walls of the valve core 300 and the first valve body 100, respectively. Under normal conditions, the valve core 300 closes the second air inlet 203 so that the first air inlet 202 and the air outlet 204 are connected. At this time, the solenoid valve is in a charging or pressure-holding state. When the coil 400 is energized, the valve core 300 overcomes the elastic force of the elastic element 500, thereby opening the second air inlet 203 and closing the first air inlet 202 so that the second air inlet 203 and the air outlet 204 are connected. At this time, the solenoid valve is in a suction or venting state.

[0027] When the solenoid valve is in the inflation state, the second air inlet 203 is closed by the valve core 300. Gas enters the conduction chamber 201 from the first air inlet 202, and then enters the air outlet 204 through the gap between the inner wall of the conduction chamber 201 and the valve core 300. The air outlet 204 is connected to the air pump, which is connected to another solenoid valve. The air pump conducts the gas to the other solenoid valve, and then conducts the gas to the gas-using unit through the other solenoid valve, thereby realizing inflation.

[0028] When the solenoid valve is in the evacuation state, the first air inlet 202 is closed by the valve core 300, and the second air inlet 203 is connected to the air-using unit. The gas is drawn out from the second air inlet 203 and enters the air outlet 204 along the gap between the inner wall of the guide chamber 201 and the valve core 300. The air outlet 204 is connected to the air pump, which is connected to another solenoid valve. The air pump guides the gas into the other solenoid valve, and under the power of the air pump, the gas is discharged through the vent of the other solenoid valve, thereby realizing the evacuation.

[0029] It should be noted that the air pump's functions of inflation, pressure holding, evacuation, and deflation are achieved through a combination of multiple solenoid valves.

[0030] It is understandable that since the first air inlet 202, the second air inlet 203, and the air outlet 204 are located on the second valve body 200, and the coil 400 is wound on the first valve body 100, the first air inlet 202, the second air inlet 203, and the air outlet 204 are arranged on the same side of the solenoid valve. This not only enables air passage but also makes the air passage arrangement more concentrated, thereby reducing the space occupied by the solenoid valve. Furthermore, the arrangement of the coil 400 does not interfere with the first air inlet 202, the second air inlet 203, and the air outlet 204, ensuring the functional reliability of the solenoid valve.

[0031] The aforementioned solenoid valve, by having the first air inlet 202, the second air inlet 203, and the air outlet 204 all located on the same side of the second valve body 200, achieves a more concentrated air path arrangement, effectively reducing the overall space occupied by the solenoid valve and consequently the overall space occupied by the valve pump, making it suitable for applications with limited installation space. Furthermore, the coil 400 is wound around the outer periphery of the first valve body 100, and its arrangement does not interfere with the first air inlet 202, the second air inlet 203, and the air outlet 204, ensuring the functional reliability of the solenoid valve during charging, pressure holding, evacuation, and deflating operations.

[0032] Example 2: The difference between this embodiment and Embodiment 1 is that this embodiment further optimizes the structure of the solenoid valve of this utility model. Please refer to the appendix. Figure 2 ~Appendix Figure 4 .

[0033] Please see below. Figure 2 , Figure 2 The diagram illustrates the structural relationship between the valve stem 310 and the first air inlet 202 and the second air inlet 203 in this embodiment of the present invention. Specifically, the valve core 300 has a valve stem 310, which is used to close the first air inlet 202 or the second air inlet 203. A gas flow channel 205 is formed between the valve stem 310 and the inner wall of the second valve body 200.

[0034] In this embodiment, the valve stem 310 can selectively close the first air inlet 202 or the second air inlet 203, reliably switching between different air paths and ensuring the accuracy of air path control for the solenoid valve under different operating conditions such as charging and evacuation. The gas flow channel 205 formed between the valve stem 310 and the inner wall of the second valve body 200 provides a smooth passage for gas flow. During charging, gas can enter the outlet 204 from the first air inlet 202 through this gas flow channel 205; during evacuation, gas enters the outlet 204 from the second air inlet 203 through the gas flow channel 205, ensuring high efficiency in gas transmission and reducing resistance and energy loss during gas flow.

[0035] In some preferred embodiments, the valve core 300 further includes an elastic abutment 320, which covers the free end of the valve stem 310. The elastic abutment 320 has elastic deformation capability, and when the valve stem 310 contacts the first air inlet 202 or the second air inlet 203, it can adaptively deform according to the slight undulations of the contact surface, tightly fitting the edge of the first air inlet 202 or the second air inlet 203, effectively preventing gas leakage, and greatly improving the sealing performance of the solenoid valve when closing the first air inlet 202 or the second air inlet 203.

[0036] In some preferred embodiments, please refer to Figure 3 , Figure 3 The diagram illustrates the structural relationship between the first valve core 330 and the second valve core 340 in this embodiment of the present invention. The valve core 300 includes a first core 330 and a second core 340. The first core 330 is located inside the first valve body 100, and the second core 340 is located inside the second valve body 200. The first core 330 and the second core 340 are connected by a rod 350, and a gas flow channel 205 is formed between the rod 350 and the inner wall of the second valve body 200. The two ends of the elastic element 500 abut against the inner walls of the first core 330 and the first valve body 100, respectively. The second core 340 is used to selectively close the first air inlet 202 or the second air inlet 203. The gas flow channel 205 formed between the rod 350 and the inner wall of the second valve body 200 provides a smooth passage for gas flow. The first core 330 is controlled by the coil 400. When the coil 400 is energized, the first core 330 overcomes the elastic force of the elastic element 500, thereby driving the rod 350 and the second core 340 to move, achieving the effect of opening the second air inlet 203 and closing the first air inlet 202. While realizing the function of the valve core 300, the arrangement of the coil 400 is made more reasonable, thereby reducing the overall space occupied by the solenoid valve.

[0037] In some preferred embodiments, the second valve body 200 further includes a first air inlet 210, a second air inlet 220, an air outlet 230, a first flow channel 240, a second flow channel 250, and a third flow channel 260. The first air inlet 210 is connected to the first air inlet 202 via the first flow channel 240, the second air inlet 220 is connected to the second air inlet 203 via the second flow channel 250, and the air outlet 230 is connected to the air outlet 204 via the third flow channel 260. The first air inlet 210 is used to connect to an air source, the second air inlet 220 is used to connect to an air-consuming unit, and the air outlet 230 is used to connect to an air pump.

[0038] Specifically, when the solenoid valve is in the charging state, the gas from the gas source enters the first inlet 202 through the first flow channel 240, then enters the outlet 204 along the gap between the inner wall of the conduction chamber 201 and the valve core 300, and enters the air pump through the third flow channel 260. The air pump pumps the gas into the gas-using unit, thereby achieving charging. When the solenoid valve is in the evacuation state, the gas from the gas-using unit enters the second inlet 203 through the second flow channel 250, enters the outlet 204 along the gap between the inner wall of the conduction chamber 201 and the valve core 300, and enters the air pump through the third flow channel 260. The air pump discharges the gas to the external environment, thereby achieving evacuation.

[0039] In some preferred embodiments, the first flow channel 240 and the third flow channel 260 extend in the same direction, forming a compact cluster of flow channels inside the second valve body 200. Preferably, the first flow channel 240 and the third flow channel 260 are arranged parallel to each other. This parallel arrangement reduces waste in the gaps between the flow channels and avoids the redundant space added to avoid other flow channels when they are not arranged parallel, thereby compressing the overall volume of the second valve body 200.

[0040] In some preferred embodiments, the valve core 300 has a suction or venting state where the first air inlet 202 is closed to allow the second air inlet 203 and the air outlet 204 to be connected, and a charging state where the second air inlet 203 is closed to allow the first air inlet 202 and the air outlet 204 to be connected. By closing the first air inlet 202 in the suction state to allow the second air inlet 203 and the air outlet 204 to be connected, and closing the second air inlet 203 in the charging state to allow the first air inlet 202 and the air outlet 204 to be connected, the air path can be flexibly switched, thereby realizing multiple air path control functions such as charging, pressure holding, suction, and venting of the air-using unit, meeting the gas requirements of the air-using unit under different operating conditions, and improving the functional versatility and adaptability of the solenoid valve.

[0041] In some more preferred embodiments, the solenoid valve further includes an elastic element 500, with its opposite ends abutting against the valve core 300 and the inner wall of the first valve body 100, respectively. The elastic element 500, through its own elastic deformation, continuously applies a stable preload to the valve core 300, causing the valve core 300 to close the second air inlet 203 and preventing the valve core 300 from shifting position due to lack of external constraint, thus avoiding airflow disruption. When the coil 400 is energized, the valve core 300 overcomes the elastic force of the elastic element 500, thereby opening the second air inlet 203. Preferably, the elastic element 500 can be a spring.

[0042] Example 3: The difference between this embodiment and Embodiment 2 is that this embodiment further optimizes the structure of the solenoid valve of this utility model. Please refer to the appendix. Figure 2 ~Appendix Figure 4 .

[0043] The second valve body 200 includes a first housing 270 and a second housing 280. The second housing 280 is connected to the first housing 270, the first valve body 100 is connected to the second housing 280, the second air inlet 203 and the air outlet 204 are opened in the first housing 270, and the first air inlet 202 is opened in the second housing 280.

[0044] In this embodiment, by distributing the first air inlet 202, the second air inlet 203, and the air outlet 204 on the interconnected first housing 270 and second housing 280, internal flow channel intersections are reduced, and air resistance is lowered. Simultaneously, the split structure facilitates individual tolerance control and quality inspection of each housing, reducing overall machining difficulty and improving alignment accuracy during assembly.

[0045] In some preferred embodiments, a first seal 290 is provided between the first housing 270 and the second housing 280. The first seal 290 can tightly fill the gap between the first housing 270 and the second housing 280 through its own elastic deformation, forming a physical barrier. On the one hand, it can prevent high-pressure gas from leaking from the gas passage to the external environment, ensuring that all gas is transmitted along the preset flow path, and ensuring the pressure stability and efficiency of the inflation and deflation process. On the other hand, it can prevent external impurities from entering the interior of the second valve body 200 from the joint, avoiding impurities from entering the conduction chamber 201 and causing the valve core 300 to jam, thereby extending the service life of the solenoid valve.

[0046] In some more preferred embodiments, a second seal 110 is provided between the first valve body 100 and the second valve body 200. The second seal 110 tightly fills the connection gap between the first valve body 100 and the second valve body 200 through elastic deformation, forming a reliable air passage barrier. On the one hand, it ensures that during inflation, gas flows only from the first air inlet 202 through the guide chamber 201 to the air outlet 204, avoiding leakage and pressure loss. On the other hand, it ensures that during evacuation, gas flows only from the second air inlet 203 to the air outlet 204, preventing external air from seeping in backwards and affecting evacuation efficiency.

[0047] The solenoid valve of this invention features a first air inlet 202, a second air inlet 203, and an air outlet 204 all located on the same side of the second valve body 200, resulting in a more concentrated air path arrangement. This effectively reduces the overall space occupied by the solenoid valve and consequently, the overall space occupied by the valve pump, making it suitable for applications with limited installation space. Furthermore, the coil 400 is wound around the outer periphery of the first valve body 100, and its arrangement does not interfere with the first air inlet 202, the second air inlet 203, and the air outlet 204, ensuring the functional reliability of the solenoid valve during charging, pressure holding, evacuation, and degassing processes.

[0048] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0049] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0050] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0051] In this invention, unless otherwise expressly specified and limited, "above or below" the first feature may include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on" the first feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the first feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0052] Although the description of this utility model has been given in conjunction with the specific embodiments described above, it is obvious to those skilled in the art that many substitutions, modifications, and variations can be made based on the above description. Therefore, all such substitutions, modifications, and variations are included within the spirit and scope of the appended claims.

Claims

1. A solenoid valve, characterized in that, include: First valve body (100); The second valve body (200) is connected to the first valve body (100) and together forms a guide chamber (201). The second valve body (200) has a first air inlet (202), a second air inlet (203) and an air outlet (204) that communicate with the guide chamber (201). A valve core (300) is disposed within the conduction chamber (201) and can selectively close the first air inlet (202) or the second air inlet (203); and A coil (400) is wound around the outer periphery of the first valve body (100).

2. The solenoid valve according to claim 1, characterized in that, The valve core (300) has a valve stem (310) for closing the first air inlet (202) or the second air inlet (203), and a gas flow channel (205) is formed between the valve stem (310) and the inner wall of the second valve body (200).

3. The solenoid valve according to claim 2, characterized in that, The valve core (300) also includes an elastic abutment (320) that covers the free end of the valve stem (310).

4. The solenoid valve according to claim 1, characterized in that, The valve core (300) includes a first core (330) and a second core (340). The first core (330) is located inside the first valve body (100), and the second core (340) is located inside the second valve body (200). The first core (330) and the second core (340) are connected by a rod (350). A gas flow channel (205) is formed between the rod (350) and the inner wall of the second valve body (200).

5. The solenoid valve according to claim 1, characterized in that, The second valve body (200) is also provided with a first air inlet (210), a second air inlet (220), an air outlet (230), a first flow channel (240), a second flow channel (250) and a third flow channel (260); The first air intake port (210) is connected to the first air intake port (202) through the first flow channel (240), the second air intake port (220) is connected to the second air intake port (203) through the second flow channel (250), and the air outlet port (230) is connected to the air outlet port (204) through the third flow channel (260).

6. The solenoid valve according to claim 5, characterized in that, The first flow channel (240) extends in the same direction as the third flow channel (260).

7. The solenoid valve according to claim 1, characterized in that, The valve core (300) has a suction or venting state that closes the first air inlet (202) to allow the second air inlet (203) and the air outlet (204) to be connected, and a filling state that closes the second air inlet (203) to allow the first air inlet (202) and the air outlet (204) to be connected.

8. The solenoid valve according to claim 1, characterized in that, It also includes an elastic element (500), the two opposite ends of which abut against the inner walls of the valve core (300) and the first valve body (100), respectively.

9. The solenoid valve according to claim 1, characterized in that, The second valve body (200) includes a first housing (270) and a second housing (280), the second housing (280) is connected to the first housing (270), the first valve body (100) is connected to the second housing (280), the second air inlet (203) and the air outlet (204) are opened in the first housing (270), and the first air inlet (202) is opened in the second housing (280).

10. The solenoid valve according to claim 9, characterized in that, A first seal (290) is provided between the first housing (270) and the second housing (280).

Images