| 摘要 |
<p>PROBLEM TO BE SOLVED: To improve detection accuracy in a configuration for detecting a rotating position of a rotor by detecting a leakage magnetic flux from a rotor magnet.SOLUTION: In a brushless motor 1, a Hall device 21 detects a leakage magnetic flux from a rotor magnet 4 and outputs a signal corresponding to a strength of the leakage magnetic flux and on the basis of the output signal, a rotating position of the rotor 2 is detected by a rotating position detection circuit. In a rotational axis direction of the rotor 2, a sensor pin 24 extending toward the Hall device 21 is disposed between the rotor magnet 4 and the Hall device 21, and a metal body which is disposed at a position different from the sensor pin 24 in the rotational axis direction, is disposed at a position adjacent with the Hall device 21.</p> |
