Patent ID: 6710690
Filing Date: 2004-03-23
Classification: F02N,H01H

Abstract:
A magnet switch for a starter, for providing an electric current to a starter motor, the magnet switch comprising:an attraction coil of a substantially cylindrical shape; a case, wherein the case covers an outer face and a side face of the attraction coil, a fixed iron core, wherein one end of the case's inner structure is closed with the fixed iron core, and wherein the attraction coil, the case, and the fixed iron core are of a substantially cylindrical shape having a closed bottom; a plunger and the fixed iron core define an air gap, wherein the plunger is disposed within an inner circumference of the attraction coil, and the case, the fixed iron core, the plunger, and the air gap form a magnetic circuit, and the plunger can move to an opposite side of the fixed iron core, pulled by the attraction coil to shorten the air gap; a holder and a joint, wherein the plunger is directly or indirectly connected to the holder; and the joint is disposed on the side opposite to the air gap; a movable contact fixed in the holder; and a pinion, wherein the joint is indirectly connected to a connection rod and moves the pinion in accordance with a movement of the plunger during a switching operation.