Small-size direct-acting actuator

Details Small-size direct-acting actuator Small-size direct-acting actuator

2008-04-08

2008-04-08

Tamai, Karl (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Linear

C310S021000, C310S036000, C360S294300

Reexamination Certificate

active

11004859

ABSTRACT:
A direct-acting actuator is provided comprising a stator section (16), an attachment section (6) secured to the stator section, micro-beams (8, 10) extending from the attachment section, a rotor section (12) supported for swing motion by the micro-beams, a permanent magnet (18) disposed in the stator section, and a coil (4) 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.

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Wakiwaka et al., Journal of the Magnetics Society of Japan, vol. 24, No. 4-2, (2000), pp. 955-958.
Wakiwaka et al, Proceedings of the 25th Annual Conference on Magnetics in Japan, 2001, p. 302.

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