Title:
MAGNETIC SENSOR AND ROTATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/090163
Kind Code:
A1
Abstract:
An encoder (1) that is a magnetic sensor is provided with a permanent magnet (21) attached to the end face of a shaft and a sensor (32) that faces the permanent magnet (21) and detects magnetic flux (21MFO) emitted from the permanent magnet (21), and the permanent magnet (21) and sensor (32) are provided so as to be capable of relative rotation around the shaft center (P) of the shaft. The magnetic flux (21MFO) discharged from an outer edge portion (21O) of the permanent magnet (21), which includes the outer peripheral face (26), is oriented such that the magnetic flux (21MFO) gradually approaches the central portion (21C) as the magnetic flux (21MFO) becomes closer to the sensor (32), more so than the magnetic flux (21MFO) discharged from the central portion (21 C) of the permanent magnet (21).
Inventors:
KATSUDA YUSUKE (JP)
TORII HISANORI (JP)
TAMURA TAKASHI (JP)
MUSHA TAKESHI (JP)
TORII HISANORI (JP)
TAMURA TAKASHI (JP)
MUSHA TAKESHI (JP)
Application Number:
PCT/JP2015/083286
Publication Date:
June 01, 2017
Filing Date:
November 26, 2015
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
G01D5/245
Foreign References:
| JP2012145425A | 2012-08-02 | |||
| JP2014107973A | 2014-06-09 | |||
| JP2015105900A | 2015-06-08 | |||
| JP2010160037A | 2010-07-22 | |||
| JP2014137232A | 2014-07-28 | |||
| JP2012506553A | 2012-03-15 |
Attorney, Agent or Firm:
TAKAMURA, Jun (JP)
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