US 12,301,067 B2
Brushless motor
Takuya Takahashi, Chiba (JP); and Naoya Negoro, Chiba (JP)
Assigned to MABUCHI MOTOR CO., LTD., Chiba (JP)
Appl. No. 18/834,226
Filed by MABUCHI MOTOR CO., LTD., Chiba (JP)
PCT Filed May 30, 2023, PCT No. PCT/JP2023/020146
§ 371(c)(1), (2) Date Jul. 30, 2024,
PCT Pub. No. WO2024/247120, PCT Pub. Date Dec. 5, 2024.
Prior Publication US 2025/0112527 A1, Apr. 3, 2025
Int. Cl. H02K 5/22 (2006.01); H02K 11/215 (2016.01); H02K 21/22 (2006.01)
CPC H02K 11/215 (2016.01) [H02K 5/225 (2013.01); H02K 21/22 (2013.01); H02K 2211/03 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A brushless motor comprising:
a rotor configured to rotate integrally with a shaft;
a stator that is placed, facing the rotor in a radial direction, and includes a core around which a winding is wound;
a board that is placed, spaced away in an axial direction from one end surface of the shaft, and extends in a direction intersecting with the axial direction;
a holder that is fixed to the stator and configured to hold the board;
a connecting means configured to electrically connect the winding and the board; and
a Hall sensor configured to detect a rotational position of the rotor, wherein
the holder is sandwiched and fixed between a housing and a cover and includes a mounting hole portion in which the Hall sensor is mounted, the housing being formed in a bottomed cylindrical shape that covers the rotor from the radially outer side, and the cover being mounted on the holder, and
the Hall sensor is inserted from an opening on the rotor side of the mounting hole portion.