Title:
LINEAR MOTOR ACTUATOR
Document Type and Number:
WIPO Patent Application WO/2010/119788
Kind Code:
A1
Abstract:
Provided is a linear motor actuator capable of vibrating a mover without using mechanical resilience of an elastic body. A first permanent magnet (3a) and a second permanent magnet (3b) magnetized in a direction of an axis are disposed in a mover (4) in the direction of the axis. A first coil (1a) and a second coil (1b) are disposed in a stator (2) so as to surround the first permanent magnet (3a) and the second permanent magnet (3b), respectively. Alternating currents having the same phase are applied to the first coil (1a) and the second coil (1b) such that the phase of thrust generated in the first coil (1a) and that of thrust generated in the second coil (1b) are shifted from each other. At this moment, a center-to-center pitch (LC1) between the center of the first coil (1a) and that of the second coil (1b) in the direction of the axis differs from a pole-to-pole pitch (LM1) of the mover.
Inventors:
IWAKI JUNICHIRO (JP)
Application Number:
PCT/JP2010/056178
Publication Date:
October 21, 2010
Filing Date:
April 05, 2010
Export Citation:
Assignee:
THK CO LTD (JP)
IWAKI JUNICHIRO (JP)
IWAKI JUNICHIRO (JP)
International Classes:
B06B1/04; H02K33/18
Foreign References:
| JPH06315255A | 1994-11-08 | |||
| JPH11168869A | 1999-06-22 | |||
| JPH079081U | 1995-02-07 |
Attorney, Agent or Firm:
SHIOJIMA, Toshiyuki (JP)
Toshiyuki Shiojima (JP)
Toshiyuki Shiojima (JP)
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