公开(公告)号：US20240381042A1

公开(公告)日：2024-11-14

申请号：US18685049

申请日：2022-09-15

Applicant: Cochlear Limited

Inventor： Henrik FYRLUND ,  Tommy BERGS ,  Per HILLSTRÖM

IPC: H04R25/00 ,  H04R17/00

Abstract: An apparatus includes an actuator configured to generate vibrations. The actuator includes a substantially planar piezoelectric oscillator having a central portion substantially surrounding and in mechanical communication with a coupling portion and a peripheral portion spaced from the coupling portion. The piezoelectric oscillator is configured to undergo bending oscillations in response to received electric voltage signals. The actuator further includes at least one mass configured to move in response to the bending oscillations of the piezoelectric oscillator. The actuator further includes at least one coupler configured to allow expansion and contraction of the peripheral portion along a first direction substantially parallel to the piezoelectric oscillator and to inhibit movement of the peripheral portion relative to the at least one mass along a second direction substantially perpendicular to the piezoelectric oscillator.