Patent ID: 8106546
Filing Date: 2012-01-31
Classification: B06B,H02K

Abstract:
1. A reciprocating vibrator comprising a ring-shaped weight having permanent magnets at its inner circumference side, a first plate spring fastened to a first end face of this weight at outer circumference side tail parts, a second plate spring fastened to a second end face of the weight at outer circumference side tail parts, and a stator supporting the first and second plate springs and having an excitation coil generating a reciprocating vibrating magnetic field with respect to the weight at an inner circumference side of the permanent magnets, said stator further comprising a metal end plate fastening the second plate spring at its inner circumference side, and a thrust member made of a magnetic material, said thrust member passing through the inside of the excitation coil, having one end protrude as to abut a center part of the first plate spring and a second end pass through a hole of the second plate spring, the second end thrusting against the metal end plate.