Solenoid type drive and starter using the same

摘要

A solenoid type device as a magnetic switch of a starter 10 comprises an exciting coil 3f that is energized and generates magnetic force, a plunger 3a that is a moving core which is a part of the magnetic circuit, and a fixed core 3j that faces the moving core and is also a part of the magnetic circuit. The moving core plunger 3a is divided into concentrically the first plunger 31 and the second plunger 32a. This configuration allows the second plunger 32a to be attracted first and then the first plunger 31a to be attracted.;Thereby, it is possible to make a small and light magnetic switch while ensuring that the magnetic switch maintains sufficient attraction force as well as to increase reliability of operations of the magnetic switch even when battery voltage is low.