METHOD AND APPARATUS FOR MAKING ELECTRICAL CONNECTION WITH A MOVABLE MEMBER

摘要

A device for making electrical connection to a reciprocating element (48), such as to a voice coil of an actuator. An electrical flow path utilizing the helical centering springs (52) as a primary element in conducting current ensures reliable current flow to a reciprocating element (48) and avoids high-speed flexing of brittle wires (22, 24). Hard-wired connections (47) are utilized only between stationary elements (32, 28). A second double coil actuator (50) embodiment employs a coaxial, substantially co-extensive pair of springs (52, 53) as the input and return current flow paths for each actuactor (48, 48a).