Patent ID: 9350222
Filing Date: 2016-05-24
CPC Classification: H02K,H02N

Claim Text:
1. An inertial drive actuator comprising: a displacement unit which causes a minute displacement in a first direction and in a second direction, the second direction being opposite to the first direction; a vibration substrate which undergoes reciprocating movement due to the minute displacement caused by the displacement unit; a first magnetic field generator which generates a magnetic field; a movable body disposed on a surface of the vibration substrate, the movable body being movable in a longitudinal direction and including a first yoke having first end portions, the first yoke concentrating a magnetic flux of an N-pole and an S-pole generated by the first magnetic field generator, at a predetermined position; and a second yoke having second end portions, the second yoke being disposed on a side of the vibration substrate, opposite to the surface on which the movable body is disposed, wherein the first end portions of the first yoke and the second end portions of the second yoke are configured to face each other to mechanically regulate a movement of the movable body in a direction perpendicular to the longitudinal direction, and the movable body is driven by a frictional force acting between the movable body and the vibration substrate that is controlled by controlling the magnetic field generated by the first magnetic field generator.