Title:
LINEAR MOTOR AND STAGE DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/163978
Kind Code:
A1
Abstract:
In this linear motor, a stator 20 includes: a field magnet 24 that is provided facing a movable element; a base yoke 28 that is provided on a first direction side, removed from the field magnet 24; and a back yoke 23a to which the field magnet 24 is fixed. The back yoke 23a is fixed to an end surface 28a of the base yoke 28 by fastening a fastening implement to a fastening section, said fastening section being provided to the end surface 28a of the base yoke 28. When the back yoke 23a is a lever and a magnetic attractive force that the field magnet 24 generates is a load at a point of effort, the fastening section sandwiches a fulcrum manifesting on the end surface 28 and exhibits a fastening force that is a load at a point of load to balance with the load at the point of effort, and the fastening section is provided to the opposite side as the side on which the fulcrum manifests, when the end surface 28 is bisected in the first direction.
Inventors:
IKEDA TAKASHI (JP)
USUI DOTARO (JP)
WADA KOTARO (JP)
YANAGAWA ATSUSHI (JP)
USUI DOTARO (JP)
WADA KOTARO (JP)
YANAGAWA ATSUSHI (JP)
Application Number:
PCT/JP2017/009968
Publication Date:
September 28, 2017
Filing Date:
March 13, 2017
Export Citation:
Assignee:
SUMITOMO HEAVY INDUSTRIES (JP)
International Classes:
H02K41/02; H02K41/03
Foreign References:
| JP2000299973A | 2000-10-24 | |||
| JP2008245475A | 2008-10-09 | |||
| JP2005237087A | 2005-09-02 |
Attorney, Agent or Firm:
MORISHITA Sakaki (JP)
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