Duplex type small electromagnetic valve structure

Abstract

The utility model provides a duplex type small electromagnetic valve structure, a valve body is provided with two cavities which are arranged in parallel, the interiors of the two cavities are communicated with each other, the two cavities are located on the same side of the valve body, and valve assemblies are arranged in the two cavities. When the coil of the first cavity is powered on, the coil generates a magnetic field, so that the movable block overcomes the thrust of the spring to move towards the lower end, the air inlet is opened, air in the air inlet flows into the front-end inflation opening to achieve inflation, the coil is powered off, the magnetic field disappears, the movable block moves towards the upper end due to the thrust of the spring, the air inlet is sealed, and the pressure maintaining effect is achieved. When the coil of the second cavity is powered on, the coil generates a magnetic field, so that the movable block overcomes the thrust of the spring to move towards the upper end, the air release opening is opened, air flows out of the air release opening through the silencing sheet, the oblique angle of the air release opening is larger than 120 degrees, the air release sectional area is increased, and the low-air-resistance silencing effect is achieved. The two cavities are arranged on the same side of the valve body in parallel, the size of the valve body is reduced, the structure is simple, and operation is convenient.

Description

Technical Field

[0001] This utility model relates to the field of solenoid valve technology, and in particular to a structure of a dual-type small solenoid valve. Background Technology

[0002] In automotive seat comfort systems, pneumatic components control the air circuits via solenoid valves. The air circuit module, in turn, uses solenoid valves to control the inflation and deflation of each air circuit, thus enabling the module's operation. For example... Figure 1 As shown, the existing solenoid valve structure mainly includes a spool, spring, coil, movable iron core, ferrite core, and fixed iron core. The movement of the movable iron core is controlled by energizing and de-energizing it. When the first coil is energized, it generates a magnetic field, which magnetizes the fixed iron core, overcoming the spring force and attracting the movable iron core. This opens the air inlet and blocks the venting channel of the fixed iron core, allowing gas to flow through the upper air passage. When the first coil is de-energized, the magnetic field disappears, and the movable iron core moves forward under the spring force, blocking the air inlet and opening the venting channel. Gas from the upper air passage flows out through the groove of the movable iron core and into the venting channel of the fixed iron core. The second movable iron core, under the spring force, presses against the vent of the first fixed iron core, sealing it and achieving a pressure-holding effect. When the second coil is energized, it generates a magnetic field, which magnetizes the second fixed iron core, overcoming the spring force and attracting the second movable iron core. This opens the venting channel of the first fixed iron core, allowing airflow to pass through a silencer and out, achieving a venting effect. The air passage structure of this solenoid valve is on a horizontal line, which results in its large size and also causes high air resistance, leaving much room for improvement. Utility Model Content

[0003] This invention provides a dual-type small solenoid valve structure to solve the technical problems mentioned in the background art.

[0004] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0005] A dual-type miniature solenoid valve structure includes a valve body having two parallel and interconnected cavities located on the same side of the valve body. A valve assembly is disposed within each cavity, comprising a permanent magnet, a movable block, and a coil. The permanent magnet is located at the bottom of the cavity, the movable block is located above the permanent magnet and along the central axis of the cavity, a connecting plate is located at the top of the movable block, a groove for accommodating the connecting plate is provided at the upper end of the cavity, and the coil is located around the movable block and below the connecting plate.

[0006] The cavity near the inlet end of the valve body is cavity number one. The air inlet of cavity number one is located above the movable block and is connected to the inlet end of the valve body through an air inlet pipe. A spring is provided between the connecting plate and the permanent magnet.

[0007] The cavity away from the inlet end of the valve body is the second cavity. A spring is provided between the movable block and its top wall in the second cavity. The vent of the second cavity is connected to the outlet end of the valve body through an air outlet pipe.

[0008] Furthermore, the cavity includes a movable cavity and a fixed cavity, the fixed cavity contains the permanent magnet, the movable cavity is located above the fixed cavity, and the movable block is located inside the movable cavity.

[0009] Furthermore, the movable cavity is provided with a groove, and the connecting plate is located in the groove, with its end connected to the movable block.

[0010] Furthermore, the movable block and the connecting plate are integrally manufactured and made of silicone.

[0011] Furthermore, the movable cavity has a circular cylindrical structure.

[0012] Furthermore, the outlet end of the valve body is provided with a mounting groove, and a sound-absorbing plate is provided in the mounting groove; the connection position between the outlet of the air outlet pipe and the mounting groove adopts an inclined surface design with an angle greater than 120°.

[0013] Furthermore, a plug is provided at the inlet end of the valve body.

[0014] Furthermore, the two ends of the coil are made of silicone.

[0015] Compared with the prior art, the present invention has the following advantages or beneficial effects:

[0016] The coil is designed with silicone components at both ends to achieve shock absorption and sealing. A spring applies pressure to the movable block, causing it to press against the air inlet and create pre-pressure, thus achieving a seal. When the coil in cavity one is energized, it generates a magnetic field, causing the movable block to move downwards against the spring's force, opening the air inlet and allowing gas to flow into the front inflation port for inflation. When the coil in cavity one is de-energized and the electromagnetic field disappears, the movable block moves upwards due to the spring's force, sealing the air inlet and achieving a pressure-holding effect. When the coil in cavity two is energized, it generates a magnetic field, causing the movable block to move upwards against the spring's force, opening the vent. Gas flows out from the vent through a silencer plate; the vent's angle is greater than 120°, increasing the vent cross-sectional area and achieving a low-resistance noise reduction effect. The two cavities are connected in parallel on the same side of the valve body, reducing the valve body's size. The magnetic field drives the silicone components, reducing the noise from their movement. Attached Figure Description

[0017] The present invention, its features, shape, and advantages will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings. Like reference numerals denote like parts throughout the drawings. The drawings are not intentionally drawn to scale; the focus is on illustrating the gist of the invention.

[0018] Figure 1 This is a schematic diagram of an existing solenoid valve.

[0019] Figure 2 A schematic diagram of the structure of a dual-type miniature solenoid valve provided in this embodiment. Figure 1 ;

[0020] Figure 3 A schematic diagram of the structure of a dual-type miniature solenoid valve provided in this embodiment. Figure 2 ;

[0021] Figure 4 This is a schematic diagram of the internal structure of the movable cavity;

[0022] In the diagram, 1 is the valve body, 21 is the first cavity, 21a is the air inlet, 22 is the second cavity, 22b is the air vent, 2a is the movable cavity, 2b is the fixed cavity, 3 is the permanent magnet, 4 is the movable block, 5 is the connecting plate, 6 is the coil, 7 is the spring, 9 is the mounting groove, 10 is the sound-absorbing plate, and 11 is the plug. Detailed Implementation

[0023] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Therefore, the detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to illustrate selected embodiments of the present utility model. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without inventive effort are within the protection scope of the present utility model.

[0024] Please refer to Figures 2-4This embodiment provides a dual-type small solenoid valve structure, including a valve body 1 and a valve assembly disposed within the valve body 1. Specifically, the valve body 1 has two parallel cavities that are internally interconnected, located on the same side of the valve body 1. A permanent magnet 3 is provided at the bottom of the cavity, and a movable block 4 is provided above the permanent magnet 3 and located on the central axis of the cavity. A connecting plate 5 is provided at the top of the movable block 4. A groove for accommodating the connecting plate 5 is provided at the upper end of the cavity. A coil 6 is provided around the movable block and below the connecting plate. The two ends of the coil 6 are made of silicone to achieve sealing and shock absorption at both ends. The first cavity 21 on the left side is close to the inlet end of the valve body 1. The air inlet 21a of the first cavity 21 is located on the central axis of the cavity and above the movable block 4, and is connected to the inlet end of the valve body 1 through an air inlet pipe. A spring 7 is provided between the connecting plate 5 and the permanent magnet 3. The second cavity 22 on the right side is away from the inlet end of the valve body 1. A spring 7 is provided between the movable block 4 and the top wall of the cavity 22. The vent 22b of the second cavity 22 is located on the central axis of the cavity and below the movable block 4. It is connected to the outlet end of the valve body 1 through an vent pipe, which passes through the permanent magnet 3. Preferably, the spring 7 is located around the movable block 4, which can reduce the assembly space.

[0025] To further explain, the cavity includes a movable cavity 2a and a fixed cavity 2b. A permanent magnet 3 is housed within the fixed cavity 2b. The movable cavity 2a is located above the fixed cavity 2b, and the movable block 4 is located within the movable cavity 2a. For example... Figure 4 As shown, the movable cavity 2a has a groove, and the connecting plate 5 is located in the groove, with its end connected to the movable block 4. The connecting plate 5 and the movable block 4 can move along the vertical direction of the movable cavity 2a. The coil 6 is fixed on the connecting plate 5, which provides support and limits the movement of the coil 6. Preferably, the movable block 4 and the connecting plate 5 are made of silicone, and are molded together with the coil 6 after injection molding with liquid silicone. The silicone material can reduce the noise generated by friction between the connecting plate and the movable cavity.

[0026] To further explain, the outlet end of valve body 1 is provided with a mounting groove 9, and a sound-absorbing plate 10 is installed inside the mounting groove 9. The connection position between the outlet of the air outlet pipe of cavity 22 and the mounting groove 9 adopts a bevel design with an angle greater than 120°. This design can eliminate the eddies generated when the airflow passes through, reduce air resistance, and increase the air release speed. The inlet end of valve body 1 is provided with a plug 11, and the plug 11 has a built-in sealing ring to prevent air leakage from the end of valve body 1.

[0027] like Figure 3As shown, when the left coil is energized, it generates a magnetic field, causing the movable block to move downwards against the spring's force, opening the air inlet. Gas flows into the front inflation port, achieving inflation. When the left coil is de-energized and the electromagnetic field disappears, the movable block moves upwards due to the spring's force, sealing the air inlet and achieving a pressure-holding effect. When the right coil is energized, it generates a magnetic field, causing the movable block to move upwards against the spring's force, opening the vent. Gas flows out from the vent through the silencer plate at an angle greater than 120°, increasing the vent cross-sectional area and achieving a low-resistance noise reduction effect. The dual-cell miniature solenoid valve provided in this embodiment connects two cavities in parallel on the same side of the valve body, reducing the valve body size. The magnetic field drives the silicone component to move, reducing the noise from the silicone component's movement.

[0028] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the contents of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. A double-type miniature solenoid valve structure, characterized in that, The device includes a valve body (1) having two parallel cavities that are internally interconnected and located on the same side of the valve body (1); a valve assembly is provided in each cavity, the valve assembly including a permanent magnet (3), a movable block (4) and a coil (6); the permanent magnet (3) is provided at the bottom of the cavity; the movable block (4) is provided above the permanent magnet (3) and located at the central axis of the cavity; a connecting plate (5) is provided at the top of the movable block (4); a groove for accommodating the connecting plate (5) is provided at the upper end of the cavity; and the coil (6) is provided around the movable block and below the connecting plate. The cavity near the inlet end of the valve body (1) is cavity number 1 (21). The air inlet (21a) of cavity number 1 (21) is located above the movable block (4) and is connected to the inlet end of the valve body (1) through the air inlet pipe. A spring (7) is provided between the connecting plate (5) and the permanent magnet (3). The cavity away from the inlet end of the valve body (1) is the second cavity (22). A spring (7) is provided between the connecting plate (5) and its top wall in the second cavity (22). The vent (22b) of the second cavity (22) is connected to the outlet end of the valve body (1) through the vent pipe.

2. The structure of the double-type miniature solenoid valve according to claim 1, characterized in that, The cavity includes a movable cavity (2a) and a fixed cavity (2b). The permanent magnet (3) is disposed in the fixed cavity (2b). The movable cavity (2a) is located above the fixed cavity (2b). The movable block (4) is located in the movable cavity (2a).

3. The structure of the double-type miniature solenoid valve according to claim 2, characterized in that, The movable cavity (2a) is provided with a groove, and the connecting plate (5) is located in the groove, with its end connected to the movable block (4).

4. The structure of the double-type miniature solenoid valve according to claim 3, characterized in that, The movable block (4) and the connecting plate (5) are integrally processed and made of silicone.

5. The structure of the double-type miniature solenoid valve according to claim 2, characterized in that, The active cavity (2a) has a circular cylindrical structure.

6. The structure of the double-type miniature solenoid valve according to claim 1, characterized in that, The valve body (1) has an installation groove (9) at its outlet end, and a sound-absorbing plate (10) is provided in the installation groove (9); the connection position between the outlet of the air outlet pipe of the second cavity (22) and the installation groove (9) adopts a slope design with an angle greater than 120°.

7. The structure of the double-type miniature solenoid valve according to claim 1, characterized in that, The valve body (1) has a plug (11) at the inlet end.

8. The structure of the double-type miniature solenoid valve according to claim 1, characterized in that, The two ends of the coil (6) are made of silicone.

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