| 摘要 |
PURPOSE: A speed-variable solenoid device with reduced noise is provided to decide the polarity of an acceleration coil part and a deceleration coil part according to the direction of a wound coil so that the polarity cannot be compartmentalized in the application of the power. CONSTITUTION: A speed-variable solenoid device with reduced noise comprises a bobbin(60) installed in a housing, a flanger, a coil part(30), and a shaft(20) coupled with the flanger The coil part comprises an acceleration coil part(31) for increasing the lowering speed of the flanger and an deceleration coil part(32) for decreasing the lowering speed of the flanger. The acceleration coil part and the deceleration coil part are divided by an additional partition. The coils of the acceleration coil part and the deceleration coil part are oppositely wound on the outer surface of the bobbin.
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