Title:
MAGNETIC LINEAR ENCODER
Document Type and Number:
WIPO Patent Application WO/2016/021401
Kind Code:
A1
Abstract:
The present invention provides a magnetic linear encoder capable of enhancing the magnetization accuracy of a permanent magnet of a magnetic scale. More specifically, a magnetic linear encoder 100 has a magnetic scale 9 provided with a permanent magnet 96, and a magnetic sensor device 1 for detecting the magnetic field from the magnetic scale 9, and the magnetic sensor device 1 and magnetic scale 9 move relative to each other in a state of not being in contact with each other. The permanent magnet 96 comprises a magnetic coating layer 97 that includes magnetic powder and resin and is formed on one surface of a metallic base plate 95. The magnetic powder used in the permanent magnet 96 is a vertically oriented ferritic magnetic powder. The surface 960 of the permanent magnet 96 on the side of the magnetic sensor device 1 is in an exposed state.
Inventors:
MORIYAMA KATSUYA (JP)
MIZUSAKI YASUSHI (JP)
MIZUSAKI YASUSHI (JP)
Application Number:
PCT/JP2015/070704
Publication Date:
February 11, 2016
Filing Date:
July 21, 2015
Export Citation:
Assignee:
NIDEC SANKYO CORP (JP)
International Classes:
G01D5/245
Foreign References:
| JP2007271608A | 2007-10-18 | |||
| JP2008083064A | 2008-04-10 | |||
| JP2002090178A | 2002-03-27 |
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