Patent ID: 11900975
Assignee: NHK SPRING CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. A head driving device which drives a head member, the device comprising:
first base portion and second base portion facing each other across an intervening space;
a head supporting portion provided between the first base portion and the second base portion and supporting the head member;
a first beam extending from the first base portion to the head supporting portion;
a first base side hinge portion connecting a base portion of the first beam to the first base portion;
a first head side hinge portion connecting a distal end of the first beam to the head supporting portion;
a second beam provided on an opposite side of the first beam across the intervening head supporting portion, and extending from the second base portion to the head supporting portion;
a second base side hinge portion connecting a base portion of the second beam to the second base portion;
a second head side hinge portion connecting a distal end of the second beam to the head supporting portion;
a first piezoelectric unit provided between the first base portion and the base portion of the first beam, and displacing the distal end of the first beam by deforming in a state where voltage is applied; and
a second piezoelectric unit provided between the second base portion and the base portion of the second beam, and displacing the distal end of the second beam by deforming in a state where voltage is applied.