Title:
GEAR FOR DETECTING ROTATION, ROTATION DETECTOR, AND DYNAMO-ELECTRIC MOTOR
Document Type and Number:
Japanese Patent JP2020061852
Kind Code:
A
Abstract:
To provide a gear for detecting rotation that is capable of preventing failures of rotation detection in a sensor well, a rotation detector and a dynamo-electric motor.SOLUTION: A gear for detecting rotation 28 is fixed to a shaft 22 of a dynamo-electric motor 10 and is used for detecting the number of rotations of the shaft 22. A through hole 41 through which the shaft 22 penetrates is formed in a center of the gear for detecting rotation 28, and a concave part 40 is formed in one face 38A on which the through hole 41 is formed. The concave part 40 contains an inclined part 42 which is formed such that the concave part 40 becomes shallower toward an outer side in a radial direction of the gear for detecting rotation 28.SELECTED DRAWING: Figure 3
Inventors:
MUKAI YASUHITO
Application Number:
JP2018191048A
Publication Date:
April 16, 2020
Filing Date:
October 09, 2018
Export Citation:
Assignee:
FANUC LTD
International Classes:
H02K11/215; H02K7/116
Domestic Patent References:
| JP2016095200A | 2016-05-26 | |||
| JPH1057681A | 1998-03-03 | |||
| JPH1133879A | 1999-02-09 | |||
| JP2006180568A | 2006-07-06 | |||
| JP2015065766A | 2015-04-09 | |||
| JP2009169035A | 2009-07-30 |
Foreign References:
| KR20140075071A | 2014-06-19 |
Attorney, Agent or Firm:
Takehiro Chiba
Toshiyuki Miyadera
Takayuki Chima
Yasuharu Nakasone
Shiro Sakai
Toru Sekiguchi
Toshiyuki Miyadera
Takayuki Chima
Yasuharu Nakasone
Shiro Sakai
Toru Sekiguchi