Title:
誘導検出型ロータリエンコーダ
Document Type and Number:
Japanese Patent JP5239025
Kind Code:
B2
Abstract:
An induction detecting type rotary encoder includes: a stator; a rotor configured to be rotated with respect to a rotary shaft; a first transmitting coil; a second transmitting coil; a first receiving coil; a second receiving coil; a first magnetic flux coupling body; and a second magnetic flux coupling body. The first transmitting coil is disposed between the first and second receiving coils. A distance between the second transmitting coil and the rotary shaft is larger than that of the second receiving coil and the rotary shaft. The first magnetic flux coupling body forms a first track for causing a periodic change for each rotation. The second magnetic flux coupling body forms a second track for causing a periodic change for each rotation. The second magnetic flux coupling body has a pattern of which an inner peripheral side is substantially continuous in a circumferential direction.
Inventors:
Hirokazu Kobayashi
Application Number:
JP2009057761A
Publication Date:
July 17, 2013
Filing Date:
March 11, 2009
Export Citation:
Assignee:
Mitutoyo Corporation
International Classes:
G01D5/20
Domestic Patent References:
| JP2006322927A | ||||
| JP200698141A | ||||
| JP200231546A |
Attorney, Agent or Firm:
Masaru Itami