Title:
LINEAR ACTUATOR
Document Type and Number:
WIPO Patent Application WO/2015/141648
Kind Code:
A1
Abstract:
The present application provides a linear actuator which uses a magnetic drive mechanism to drive a movable element and which can effectively suppress resonance of the movable element even when a spring member is connected thereto. Specifically, this linear actuator (1) is provided with: a stator (2), a movable element (6), a spring member (8) connected to the movable element (6) and the stator (2), and a magnetic drive mechanism (5) which drives the movable element (6) along an axis (L). Further, between the stator (2) and the movable element (6), gel-like damper members (9) that comprise silicone gel, etc., are arranged in positions on the axis (L) and/or positions surrounding the axis (L). For example, in the stator (2), the gel-like damper members (9) may be arranged in positions along the axis (L) between the movable element (6) and a base (4) opposite the movable element (6). The gel-like damper members (9) include a first gel-like damper member (91) positioned on the axis (L), and second gel-like damper members (92) positioned so as to surround the axis (L).
Inventors:
TAKEDA TADASHI (JP)
KITAHARA HIROSHI (JP)
SUE TAKESHI (JP)
KITAHARA HIROSHI (JP)
SUE TAKESHI (JP)
Application Number:
PCT/JP2015/057781
Publication Date:
September 24, 2015
Filing Date:
March 17, 2015
Export Citation:
Assignee:
NIDEC SANKYO CORP (JP)
International Classes:
H02K33/02; F16F15/04
Foreign References:
| JP2007229582A | 2007-09-13 | |||
| JP2011055564A | 2011-03-17 | |||
| US20110062804A1 | 2011-03-17 | |||
| JP2009166016A | 2009-07-30 | |||
| JP2010260043A | 2010-11-18 |
Other References:
See also references of EP 3121946A4
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