Patent ID: 6937123

Claim:
An electromagnetic switch of an engine starter including a starter motor, said electromagnet switch comprising: a pair of stationary contacts connectable to the starter motor; a movable contact disposed at a distance L 2 from said pair of stationary contacts; a rod having one end that slidably supports said movable contact via an insulating member and a stopper that restricts axial movement of said movable contact; an electromagnetic coil unit that includes a plunger that moves said rod, a stator core, a spring that urges said movable contact against said stopper and an exciting coil that moves said plunger toward said stator core and moves said rod by a distance L 1 in an axial direction when excited; and an inclination rectifying member, disposed near at least one of said stationary contacts, for providing a rectifying surface at a distance L 3 from said movable contact to abut said movable contact when said one of the stationary contact wears to a preset degree; wherein: the distances L 1 , L 2 and L 3 have the following relationship: L 1 >L 3 >L 2 .