Vibration actuator with plate springs including planar, spiral deformation arms

A vibration actuator comprising:

• a movable body comprising:
• a disk-shaped magnet;
• a pair of disk-shaped cores fixed on front and rear surfaces of the disk-shaped magnet and each having an opening at a center in a radial direction thereof;
• a pair of leaf springs having a substantially circular shape, each of the leaf springs including a plurality of deformation arms forming a planar, spiral shape in a common plane extending in the radial direction;
• and
• a pair of spring stopper weight parts each having one end positioned by joining the opening to be joined with one of the disk-shaped cores and having another end connected to a central part of one of the leaf springs;
• and
• a fixing body comprising an annular coil and configured to support and accommodate therein the movable body such that the disk-shaped magnet, the disk-shaped cores and the spring stopper weight parts are capable of vibrating in an axial direction inside the annular coil, wherein
• each of the leaf springs is provided with a damper as a bridge between spring portions in each of the leaf springs.