Coil component

Abstract

A coil component 1 includes: a pot core 2; a coil 10 for generating magnetic flux when a predetermined electric current is supplied; a piezoelectric actuator 15 for changing the position of a movable core portion 11 with respect to the coil 10 in response to a control signal supplied from the outside and for passing the movable core portion 11 through the magnetic flux of closed magnetic-path, which is generated by the coil 10. Also, the piezoelectric actuator 15 includes: a piezoelectric device 9 for creating displacement in parallel with the thickness direction caused by the control signal, a moving body 11 connected to the piezoelectric device 9 and the movable core portion 11 for moving the movable core portion 11 in response to the displacement which occurred for the piezoelectric device 9, and a friction-drive rod 13 for rendering the moving body 11 moved by the displacement which occurred for the piezoelectric device 9 to be stationary at a predetermined position.

Dependencies are inferred from the claim text.