Patent ID: 8336874
Filing Date: 2012-12-25
Classification: B65H,H01F

Abstract:
1. A solenoid device comprising: a plunger; a solenoid configured to cause a displacement of the plunger; and a driving control unit configured to control driving of the solenoid, wherein the driving control unit is configured to supply current pulses to the solenoid and change a pulse interval of the current pulses, configured to select a table from a plurality of interval tables having different pulse intervals from each other, and supply the current pulses to the solenoid according to the selected table, and configured to set the pulse interval to be gradually shorter when the plunger is attracted to the solenoid and wherein the driving control unit includes a voltage sensor configured to sense a voltage applied to the solenoid and changes the pulse interval in accordance with the voltage applied to the solenoid.