| 摘要 |
PROBLEM TO BE SOLVED: To provide a motor which enables improvement of the position detection accuracy of a rotor magnet.SOLUTION: A motor includes: a stator core 211; coils 213 attached to the stator core 211; a shaft 31 rotatably supported by a bearing part 4; a rotor core 32 fixed to the shaft 31; a rotor magnet 33 fixed to the rotor core 32 and disposed at the radial inner side of the stator core 211; a circuit board 22 in which a sensor 221 for detecting a position of the rotor magnet 33 is provided on a lower surface; and a substrate holder 23 configured to hold the circuit board 22 above the rotor magnet 33. The substrate holder 23 includes: a substrate holding part which holds an outer edge part of the circuit board 22 and restricts movement of the circuit board 22 in a circumferential direction; and substrate holder leg parts protruding downward from the substrate holding part and respectively fixed to substrate grooves extending downward from an upper end on an outer peripheral surface of the stator core 211.SELECTED DRAWING: Figure 4 |
