Small electromagnetic valve structure

Abstract

The utility model provides a small electromagnetic valve structure which comprises a valve body, the valve body is provided with a movable cavity and a fixed cavity, a permanent magnet is arranged in the fixed cavity, and a movable block, a connecting plate, a coil and a spring are arranged in the movable cavity. The coil is designed into a two-end silica gel piece form, so that two-end damping sealing can be realized; the spring applies pressure to the movable block, so that the movable block abuts against the air inlet to generate prepressing, and sealing is achieved. When the coil is powered on, the coil generates a magnetic field, the movable block overcomes thrust of the spring to move towards the lower end, the air inlet is opened, the air outlet at the lower end is sealed, air in the air inlet flows into the front-end inflation inlet to achieve inflation, and when the coil is powered off, the magnetic field disappears, the movable block moves towards the upper end due to thrust of the spring, the air inlet is sealed, and the air outlet is opened. The electromagnetic valve is simple in structure and small in size, the connecting plate and the movable block are integrally formed and made of silica gel, noise generated by movement can be reduced, the oblique angle at the outlet of the air outlet pipeline can increase the air leakage sectional area, and the low-air-resistance silencing effect is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to solenoid valve technical field especially relates to a small solenoid valve structure. BACKGROUND

[0002] The pneumatic product in the automobile seat comfort system controls the gas circuit through the solenoid valve, and the gas circuit module controls the inflation and deflation of each gas circuit through the solenoid valve to realize the action of the gas circuit module. The existing solenoid valve structure mainly includes a spool, a spring, a coil, a movable core, an iron core and a pressure buckle, and the movement of the movable core is controlled by power on and power off. The coil power-on generates a magnetic field, so that the metal pressure buckle is magnetized to generate magnetism to overcome the spring force and suck the sliding iron core, open the air inlet and block the pressure buckle exhaust port, and the intermediate gas flows from the upper air duct to inflate. After power off, the magnetic field disappears, the sliding iron core moves forward under the spring force, blocks the air inlet and opens the pressure buckle exhaust port, and the gas in the upper air duct passes through the groove of the movable core and is exhausted from the pressure buckle exhaust port. The solenoid valve has large size, large air resistance, and large noise generated when the movable core moves, and has great improvement space. SUMMARY

[0003] The utility model provides a small solenoid valve structure to solve the technical problem in the background art.

[0004] The utility model discloses a small solenoid valve structure to solve the technical problem in the background art.

[0005] Small solenoid valve structure, including the valve body, the valve body has a cavity, the cavity is divided into movable cavity and fixed cavity, be equipped with permanent magnet in the fixed cavity, the movable cavity is located the top of fixed cavity, the center of movable cavity is provided with movable block, the upper end of movable block is equipped with the connecting plate, the periphery of movable block and be located the lower of connecting plate is provided with the coil, be equipped with the spring between connecting plate and permanent magnet, the top and bottom of movable cavity are equipped with air inlet and air outlet respectively, air inlet and air outlet all are located the central axis of movable block, the inlet end of valve body and air inlet are connected through the air inlet pipeline, the outlet end of valve body and air outlet are connected through the air outlet pipeline, and the air outlet pipeline is arranged in permanent magnet, be equipped with the sound-absorbing piece at the outlet of air outlet pipeline.

[0006] Further, the movable block and the connecting plate are integrally processed, and the material is silica gel.

[0007] Further, the outlet end of the valve body is provided with a mounting groove, and the sound-absorbing piece is fixed in the mounting groove. The connection position between the outlet of the air outlet pipeline and the mounting groove is designed with an inclined surface, and the inclined angle is greater than 120°.

[0008] Further, the spring is arranged outside the movable block.

[0009] Further, the coil is designed in the form of two-end silica gel members, so that two-end sealing and damping can be realized.

[0010] Further, the upper cover is installed on the inlet end of the valve body.

[0011] Compared with the prior art, the utility model has the advantages or beneficial effects as follows:

[0012] The coil is designed in the form of two-end silica gel members, so that two-end damping and sealing can be realized. The spring exerts pressure on the movable block, so that the movable block presses against the air inlet to generate pre-pressing and realize sealing. When the coil is electrified, the coil generates a magnetic field, so that the movable block moves to the lower end against the pushing force of the spring, the air inlet is opened, the lower end air outlet is sealed, the air inlet gas flows into the front end air inlet to realize air charging, when the coil is de-energized, the magnetic field disappears, the movable block moves to the upper end due to the pushing force of the spring, the air inlet is sealed and the air outlet is opened, and the air charging gas flows out from the air outlet through the sound-absorbing sheet. The small electromagnetic valve provided by the utility model has simple structure and small size, the connecting plate and the movable block are integrally formed, the material is silica gel, noise generated by movement can be reduced, the inclined angle at the outlet of the air outlet pipeline can increase the air discharge cross-sectional area, and the low air resistance sound-absorbing effect is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0013] The utility model and its features, shape and advantages will become more apparent by reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings. The same reference signs indicate the same parts throughout the drawings. The drawings are not necessarily drawn to scale, and the emphasis is on showing the main idea of the utility model.

[0014] Figure 1 Structure diagram of the small electromagnetic valve provided for the embodiment Figure One ;

[0015] Figure 2 Structure diagram of the small electromagnetic valve provided for the embodiment Figure Two ;

[0016] Figure 3 Structure diagram of the internal structure of the movable cavity provided for the embodiment

[0017] In the drawings, 1, valve body, 2, movable cavity, 3, fixed cavity, 4, permanent magnet, 5, movable block, 6, connecting plate, 8, coil, 9, air inlet, 10, air outlet, 11, spring, 12, air inlet pipeline, 13, air outlet pipeline, 14, sound-absorbing sheet, 15, mounting groove, 16, upper cover. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the utility model will be described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Therefore, the detailed description of the embodiments of the utility model provided in the drawings below is not intended to limit the scope of the utility model claimed, but only represents selected embodiments of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the utility model.

[0019] Please refer to Figures 1-3 The embodiment provides a small electromagnetic valve structure, which comprises a valve body 1, the valve body is provided with a cavity, the cavity is divided into a movable cavity 2 and a fixed cavity 3, the fixed cavity 3 is in the form of a circular column, a permanent magnet 4 is arranged in the cavity, and the movable cavity 2 is located above the fixed cavity 3. An active block 5 is arranged at the position of the central axis of the movable cavity 2, a connecting plate 6 is arranged at the upper end of the active block 5, a coil 8 is arranged at the peripheral part of the active block 5 and below the connecting plate 6, and a spring 11 is arranged between the connecting plate 6 and the permanent magnet 4. The top and bottom of the movable cavity 2 are respectively provided with an air inlet 9 and an air outlet 10, the air inlet 9 and the air outlet 10 are located on the central axis of the active block 5, the inlet end of the valve body is communicated with the air inlet 9 through an air inlet pipeline 12, the outlet end of the valve body 1 is communicated with the air outlet 10 through an air outlet pipeline 13, the air outlet pipeline 13 penetrates the permanent magnet 4, and the air outlet pipeline 13 is provided with a sound-absorbing sheet 14 at the outlet.

[0020] Further, the end of the inlet end of the valve body 1 is provided with an upper cover 16, so that the end of the valve body 1 is prevented from being discharged, the outlet end is provided with a mounting groove 15, the sound-absorbing sheet 14 is fixed in the mounting groove 15, and the connection position between the outlet of the air outlet pipeline 13 and the mounting groove 15 is designed in the form of an inclined surface, the inclined angle is greater than 120°, the design can eliminate the vortex generated when the airflow passes through, reduce the air resistance and improve the discharging speed.

[0021] The two ends of the coil 8 are in the form of silica gel, so that the two ends can be sealed and damped. The spring 11 is arranged outside the active block 5 and is used for pressing the active block 5, so that the active block 5 is pressed against the air inlet 9 and generates pre-pressing, thereby realizing sealing. Figure 2As shown, when the coil 8 is energized, the coil 8 generates a magnetic field, so that the movable block 5 moves to the lower end against the pushing force of the spring 11, the air inlet 9 is sealed to open the lower end air outlet 10, the air inlet 9 gas flows into the front end air inlet to realize the air charging. When the coil 8 is de-energized, the magnetic field disappears, the movable block 5 moves to the upper end due to the pushing force of the spring 11, the air inlet 9 is sealed to open the air outlet 10, and the air charging port gas flows out from the air outlet 10 through the sound attenuation sheet 14. The small electromagnetic valve provided in the embodiment has the advantages of simple structure, small size, integrated forming of the connecting plate and the movable block, and the material is silica gel, which can reduce the noise generated by the movable block, the inclined angle at the outlet of the air outlet pipeline can increase the air leakage cross-sectional area, and the low air resistance sound attenuation effect is achieved.

[0022] The above description is only preferred embodiments of the utility model, and does not limit the patent range of the utility model, and any equivalent structural transformation, direct or indirect application in other related technical fields by using the content of the utility model specification and drawings are also included in the patent protection range of the utility model.

Claims

1. A small-sized electromagnetic valve structure, characterized by comprising: The utility model provides a valve body (1) with a cavity, the cavity is divided into movable cavity (2) and fixed cavity (3), the fixed cavity (3) is equipped with permanent magnet (4), the movable cavity (2) is located the upper of fixed cavity (3), the movable cavity (2) is equipped with movable block (5) in the center, the upper end of movable block (5) is equipped with connecting plate (6), the periphery of movable block (5) and be located the below of connecting plate (6) is equipped with coil (8), connecting plate (6) and permanent magnet (4) are equipped with spring (11) between, the top and bottom of movable cavity (2) are equipped with air inlet (9) and air outlet (10) respectively, air inlet (9) and air outlet (10) are located the central axis of movable block (5), the inlet end of valve body and air inlet (9) are communicated through air inlet pipeline (12), the outlet end of valve body (1) and air outlet (10) are communicated through air outlet pipeline (13), and the air outlet pipeline (13) is worn in permanent magnet (4), and air outlet pipeline (13) is equipped with silencer piece (14) at the outlet.

2. The compact solenoid valve structure according to claim 1, wherein The movable block (5) and the connecting plate (6) are integrally processed, and the material is silica gel.

3. The compact solenoid valve structure according to claim 1, wherein The outlet end of the valve body (1) is provided with a mounting groove (15), and the silencer piece (14) is fixed in the mounting groove (15); the connection position between the outlet of the air outlet pipeline (13) and the mounting groove (15) is designed with an inclined surface, and the inclined angle is greater than 120°.

4. The compact solenoid valve structure according to claim 1, wherein The spring (11) is arranged outside the movable block (5).

5. The compact solenoid valve structure according to claim 1, wherein The two ends of the coil (8) are in the form of silica gel.

6. The compact solenoid valve structure according to claim 1, wherein The fixed cavity (3) is in the form of a circular column structure.

7. The compact solenoid valve structure according to claim 1, wherein The end of the inlet end of the valve body (1) is provided with an upper cover (16).

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