Vibration actuator and mobile communication terminal

Details Vibration actuator and mobile communication terminal Vibration actuator and mobile communication terminal

H - Electricity

04

R

H04R 11/14 (2006.01) B06B 1/04 (2006.01) H04M 3/02 (2006.01) H04Q 7/32 (2006.01)

Patent

CA 2308653

A vibration actuator comprising a drive section having a coil placed in a cavity of a magnetic circuit, a vibrator driven by the drive section, a spacer made such that its end portion supports a peripheral edge portion of the vibrator, and an external plate member for covering the other end portion of the spacer. A closed space defined by the vibrator, the spacer and the external plate member is constructed as an acoustic space based on the Helmholtz's resonance principle. A mobile communication terminal contains the vibration actuator in its housing.

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