Patent ID: 8040637

Claim:
A drive comprising: a coil of a rectangular shape; a magnet disposed opposite to one side of said coil; and a yoke holding said magnet and passing a magnetic line of force through said one side along with said magnet, wherein said coil passes a current, thereby producing thrust on said one side, said drive further comprising: an oscillating part holding said coil and having an oscillation axis that is parallel to said one side and is the center of oscillation; and an elastic body giving to said oscillating part an urging force against said thrust, wherein said coil has a centroid axis that is parallel to said one side and passes over a centroid of said rectangular shape of said coil, said coil has another side that is parallel and opposite to said one side, said another side does not have a magnet and a yoke that pass a magnetic line of force through said another side, and said oscillation axis is located between a coil face outside said another side and said centroid axis.