Patent ID: 8770560

Claim:
An electromagnetic actuator comprising: a stator having a stator magnetic path provided by yoke members attached about a circumference of a coil; a movable member disposed in a center hole of the coil, the movable member being actuated in an axial direction of the coil through action of a magnetic field generated by energizing the coil; an annular supporting member secured to the stator; an oscillator member secured to the movable member while being disposed in opposition to the annular supporting member across a gap in an axis-perpendicular direction; and a supporting rubber elastic body of annular plate shape disposed between opposing faces of the annular supporting member and the oscillator member in the axis-perpendicular direction, and elastically linking the oscillator member to the annular supporting member, wherein the supporting rubber elastic body includes a thin walled portion, and at the thin walled portion, one axial face of the supporting rubber elastic body is furnished with an inside peripheral recessed portion and a first outside peripheral protruding portion while another axial face of the supporting rubber elastic body is furnished with a first inside peripheral protruding portion and an outside peripheral recessed portion.