Gas circuit electromagnetic valve control unit with check valve

Abstract

The utility model discloses a gas circuit solenoid valve control unit with a check valve, which comprises a spool, a blanking cap, a check valve, a fixed magnet, a movable magnet and a coil, the spool is integrally formed and comprises a tubular gas outlet section at the front end, an annular coil groove in the middle and a tail end at the tail; an air channel penetrating through the annular coil groove and the tail end is arranged in the bobbin, an air leakage section is further arranged at the front end of the bobbin, and the air leakage channel is communicated with the air channel. The coil is wound in the annular coil groove; the plug cover comprises an embedded section embedded into the tail end of the bobbin and an installation opening exposed outside, the interior of the plug cover is a hollow air inlet section, and the check valve is arranged in the installation opening; the fixed magnet is fixed on the spool, and the movable magnet is arranged in an air channel in the spool. On the basis of the prior art, the size is reduced, meanwhile, the space utilization rate is increased, and the advantages of low air resistance and low noise are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of gas circuit solenoid valve control units. BACKGROUND

[0002] The pneumatic product of current automobile seat comfort system is usually controlled by solenoid valve, and the pressure of gas circuit is controlled by constant pressure valve.

[0003] The core electromagnetic driving mechanism of the existing technology's check valve mainly includes spool, spring, coil, movable core, yoke and fixed core, and the movement of movable core is controlled by energization and de-energization. Movable core is blocked by spring force, and air source enters from check valve, and gas in upper gas passage flows out from charging passage through the recess of movable core, to realize the control of charging and discharging. But the conventional electromagnetic drive is to magnetize fixed core by coil energization, so as to pull movable core to open gas circuit. In order to ensure the pulling of coil, yoke unit is needed to be set outside, which leads to the increase of structure size. Because of the existence of spring and fixed core, the gas resistance is increased, and large noise is caused. SUMMARY

[0004] The utility model provides a kind of gas circuit solenoid valve control unit with check valve, which reduces size while improving space utilization on the prior art, and has the advantages of low gas resistance and low noise.

[0005] Technical scheme: To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a kind of gas circuit solenoid valve control unit with check valve, including spool, plug, check valve, fixed magnet, movable magnet and coil,

[0006] The spool is integrally formed, including tubular gas outlet section at front end, annular coil groove at middle part and tail end at tail end. Gas passage is provided in the spool, which penetrates the annular coil groove and the tail end. The front end of the spool is also provided with a gas discharge section, and the gas discharge passage is communicated with the gas passage. The coil is wound in the annular coil groove.

[0007] The plug includes embedded section embedded in the tail end of the spool and mounting port exposed outside. The inside of the plug is a hollow gas inlet section. The check valve is arranged in the mounting port.

[0008] The fixed magnet is fixed on the spool, and the movable magnet is arranged in the gas passage in the spool. When the coil is de-energized, the movable magnet is attracted by the fixed magnet and located away from the plug. At this time, the gas entering from the gas inlet section is sent out by the gas outlet section after passing through the gas passage. When the coil is energized, the movable magnet is moved to close to the plug by electromagnetic drive. The gas entering from the gas inlet section is sent out by the gas discharge section after passing through the gas passage.

[0009] As preferred, the pipeline of the air leakage section is provided with a sound-absorbing sheet made of PE sintering and provided with micropores.

[0010] As preferred, a sealing ring is arranged between the outer wall of the plug and the inner wall of the bobbin.

[0011] As preferred, the check valve comprises a cylindrical base and a circular elastic sheet arranged at the outer end of the cylindrical base, the circular elastic sheet is provided with an outwardly protruding arc, and when air enters, the air flow can separate the circular elastic sheet from the cylindrical base to form an air flow passage.

[0012] As preferred, the back surface of the circular elastic sheet is further provided with a plurality of reinforcing ribs.

[0013] As preferred, the air inlet section, the air flow passage, the air outlet section and the air leakage section are all provided with corners.

[0014] As preferred, the plug is fixed to the tail end of the bobbin by buckling.

[0015] Beneficial effects: compared with the prior art, the utility model has the following advantages: BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a sectional structure schematic view of the air path electromagnetic valve control unit with check valve.

[0017] Figure 2 It is a structure schematic view of the bobbin.

[0018] Among them, the bobbin 1, the plug 2, the check valve 3, the fixed magnet 4, the movable magnet 5, the coil 6, the tubular air outlet section 7, the annular coil groove 8, the air flow passage 9, the air leakage section 10, the sound-absorbing sheet 11, the sealing ring 12, the cylindrical base 13, the circular elastic sheet 14, the reinforcing rib 15. DETAILED DESCRIPTION

[0019] The utility model is further illustrated below in combination with the drawings and specific embodiments, and it should be understood that these embodiments are only used for illustrating the utility model and are not used for limiting the scope of the utility model, and after reading the utility model, various equivalent modifications of the utility model made by those skilled in the art all fall within the range defined in the claims of the application.

[0020] As Figure 1 Shown, the utility model discloses air path electromagnetic valve control unit with check valve mainly includes bobbin, plug, check valve, fixed magnet, movable magnet and coil, wherein:

[0021] The spool comprises a tubular air outlet section, a ring-shaped coil groove and a tail end, which are integrally formed and hollow in the middle, the tubular air outlet section is located at the front end, the seat air passage is located at the middle and the tail, and the air release section in communication with the air passage is further arranged at the front end of the spool.

[0022] The coil is wound in the ring-shaped coil groove, the plug cover comprises an embedded section embedded in the tail end of the spool and a mounting port exposed outside, the inside of the plug cover is a hollow air inlet section, and the check valve is arranged in the mounting port, the plug cover is inserted into the tail of the spool, a sealing ring is arranged between the plug cover and the tail of the spool, and the mounting port of the plug cover is fixed to the tail of the spool by buckling.

[0023] The fixed magnet is fixed on the spool, and the movable magnet is arranged in the air passage in the spool, when the coil is powered off, the movable magnet is located on the side away from the plug cover under the attraction of the fixed magnet, at this time, the gas entering from the air inlet section is sent out through the air release section after passing through the air passage, when the coil is powered on, the movable magnet is driven to move and abut against the plug cover under the electromagnetic drive, and the gas entering from the air inlet section is sent out through the air release section after passing through the air passage.

[0024] In order to reduce the vortex flow and air resistance, corners are arranged in the air inlet section, the air passage, the air outlet section and the air release section, and the corners are preferably greater than 120 degrees.

[0025] As preferred, the check valve comprises a cylindrical base and a circular elastic sheet arranged at the outer end of the cylindrical base, the circular elastic sheet is provided with an outwardly protruding arc, the circular elastic sheet is separated from the cylindrical base to form an air flow passage when the air flow enters, and a plurality of reinforcing ribs are further arranged on the back of the circular elastic sheet to improve the mechanical strength of the check valve.

[0026] As shown in the drawings, the electromagnetic valve control unit of the present application comprises a spool, a magnet, a coil, a movable magnet and a plug cover, the movement of the movable magnet is controlled by power-on and power-off, the movable magnet is subjected to the magnetic force of the magnet at the left end, the air release passage is blocked, the air source enters from the check valve, the air in the upper air passage flows out from the air charging passage through the gap between the spool and the movable magnet, the check valve is sealed due to the air pressure at the left end when the air source is stopped to charge, and the pressure maintaining effect is achieved, the coil is powered on to generate a magnetic field, the movable magnet is subjected to the magnetic force of the coil to overcome the magnetic force of the magnet, the air release passage is opened, the air flow flows out from the air release passage through the sound attenuation sheet, and the air release effect is achieved, and the present application has the advantages that, compared with the prior art, the size is smaller, the internal space utilization is higher, and the noise is lower, without yoke, spring and slide rod assembly.

[0027] The above examples only illustrate the principles of the present application and its effects and uses, but are not intended to limit the present application. The skilled in the art can make modifications or variations without departing from the spirit and scope of the present application. Therefore, any modifications or variations made by those skilled in the art without departing from the spirit and scope of the present application should be covered by the claims of the present application.

Claims

1. An air passage solenoid valve control unit with a check valve, characterized by: The bobbin, the plug, the check valve, the fixed magnet, the movable magnet and the coil, The bobbin is integrally formed and comprises a tubular air outlet section at the front end, a ring-shaped coil groove at the middle part and a tail end at the tail end. The bobbin is internally provided with an air passage channel penetrating through the ring-shaped coil groove and the tail end. The bobbin is further provided with a gas release section at the front end, which is in communication with the air passage channel. The coil is wound in the ring-shaped coil groove. The plug comprises an embedded section embedded in the tail end of the bobbin and a mounting port exposed outside. The inside of the plug is a hollow air inlet section. The check valve is arranged in the mounting port. The fixed magnet is fixed on the bobbin. The movable magnet is arranged in the air passage channel in the bobbin. When the coil is powered off, the movable magnet is attracted to the fixed magnet and is located away from the plug. At this time, the gas entering from the air inlet section is sent out by the air outlet section after passing through the air passage channel. When the coil is powered on, the movable magnet is driven to move close to the plug. The gas entering from the air inlet section is sent out by the gas release section after passing through the air passage channel.

2. The air passage solenoid valve control unit with a check valve according to claim 1, characterized by: The pipeline of the gas release section is further provided with a sound-absorbing sheet made of PE sintering and provided with micropores.

3. The air passage solenoid valve control unit with a check valve according to claim 1, characterized by: A sealing ring is arranged between the outer wall of the plug and the inner wall of the bobbin.

4. The air passage solenoid valve control unit with a check valve according to claim 1, characterized by: The check valve comprises a cylindrical base and a circular spring plate arranged at the outer end of the cylindrical base. The circular spring plate is provided with an outwardly convex arc. When the air inlet, the air flow can separate the circular spring plate from the cylindrical base to form an air flow channel.

5. The control unit of the gas passage solenoid valve with a check valve according to claim 4, characterized in that: The back of the circular spring plate is further provided with a plurality of reinforcing ribs.

6. The air passage solenoid valve control unit with a check valve according to claim 1, characterized by: The air inlet section, the air passage channel, the air outlet section and the gas release section are all provided with corners.

7. The air passage solenoid valve control unit with a check valve according to claim 1, characterized by: The plug is fixed on the tail end of the bobbin by a buckle.

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