Piezoelectric actuator and information storage apparatus

A piezoelectric actuator (200) includes a center body (200a) and two spiral arms (200b), the two arms (200b) being entirely in rotation symmetry and nonlinear symmetry. Such a piezoelectric actuator (200) can obtain large displacement at low voltage, be small-sized and lightweight, and be low in man...

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Bibliographic Details
Main Authors HIDA, MASAHARU, UMEMIYA, SHIGEYOSHI, MITA, TSUYOSHI, KURIHARA, KAZUAKI, KUTAMI, MICHINORI
Format Patent
LanguageEnglish
French
German
Published 14.07.2004
Edition7
Subjects
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
GENERATION
INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PHYSICS
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Summary:A piezoelectric actuator (200) includes a center body (200a) and two spiral arms (200b), the two arms (200b) being entirely in rotation symmetry and nonlinear symmetry. Such a piezoelectric actuator (200) can obtain large displacement at low voltage, be small-sized and lightweight, and be low in manufacture cost and accordingly an information storage apparatus in which such a piezoelectric actuator is incorporated can be small sized, lightweight, and have a small inertia moment during head driving and a high recording density.
Bibliography:Application Number: EP20010300453