Resonance drive actuator

Details Resonance drive actuator Resonance drive actuator

2005-09-22

2008-10-21

Lam, Thanh (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Reciprocating

C310S012060

Reexamination Certificate

active

07439641

ABSTRACT:
A resonance drive actuator includes a casing; an electromagnetic drive section supported in the interior of the casing; a plunger to be reciprocatively driven at least in a rotational direction or in an axial direction by the electromagnetic drive section; an output shaft on which the plunger is fixed; and a spring which acts between the output shaft and the casing. The actuator resonantly drives a load connected to an end of the output shaft. The spring is a plate spring which integrally includes a casing inner-surface abutment portion fixedly abutting the inner surface of the casing, an output-shaft abutment portion fixedly abutting an outer surface of the output shaft, and a connection portion having the form of a strip and connecting the output-shaft abutment portion and the casing inner-surface abutment portion. The plate spring is fixed to both of the inner surface of the casing, and the output shaft.

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