Small-size direct-acting actuator

A direct-acting actuator is provided comprising a stator section, an attachment section secured to the stator section, micro-beams extending from the attachment section, a rotor section supported for swing motion by the micro-beams, a permanent magnet disposed in the stator section, and a coil dispo...

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Bibliographic Details
Main Authors Nakamura, Hajime, Minowa, Takehisa
Format Patent
LanguageEnglish
Published 08.04.2008
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Summary:A direct-acting actuator is provided comprising a stator section, an attachment section secured to the stator section, micro-beams extending from the attachment section, a rotor section supported for swing motion by the micro-beams, a permanent magnet disposed in the stator section, and a coil disposed in the rotor section. Electric current is conducted through the coil in the magnetic field created by the permanent magnet for causing the micro-beams to be displaced for inducing swing motion of the rotor section. The actuator can be assembled to a small size, typically a width of 1-10 mm, a length of 1-10 mm, and a height of 0.1-5 mm.