| 摘要 |
PROBLEM TO BE SOLVED: To constitute a rotation detector of which the sensor holder for supporting the detector can commonly be used, when proving the rotation detector that detects a rotational state of a rotating shaft. SOLUTION: The sensor holder 12, where a Hall element 14 to serve as a rotation detector is arranged, is made bisymmetrical relative to the center line Z of an electric motor 2 which is parallel with a motor shaft 4 and is orthogonal to an output shaft 28, and it is set to be bisymmetrical relative to the center line Z of the electric motor 2 which is parallel with the motor shaft 4 and is orthogonal to the output shaft 28 provided in a worm wheel 8. |
