US 12,294,240 B2
Motor
Shunsuke Shimizu, Osaka (JP); Masaki Hirano, Osaka (JP); Hiroshi Hibino, Osaka (JP); and Yoshitaka Okuyama, Osaka (JP)
Assigned to DAIKIN INDUSTRIES, LTD., Osaka (JP)
Filed by DAIKIN INDUSTRIES, LTD., Osaka (JP)
Filed on Mar. 13, 2023, as Appl. No. 18/120,846.
Application 18/120,846 is a continuation of application No. PCT/JP2021/033556, filed on Sep. 13, 2021.
Claims priority of application No. 2020-165213 (JP), filed on Sep. 30, 2020.
Prior Publication US 2023/0223799 A1, Jul. 13, 2023
Int. Cl. H02K 1/14 (2006.01); H02K 1/16 (2006.01)
CPC H02K 1/146 (2013.01) [H02K 1/16 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A motor comprising:
a rotor rotatable about a shaft; and
a stator arranged so as to face the rotor in a radial direction, the stator including a stator iron core,
the stator iron core including
a yoke that is substantially annular, and
a plurality of teeth extending from the yoke toward the rotor in the radial direction and being arranged at intervals in a circumferential direction of the yoke,
each of the plurality of teeth including
an extending portion around which a winding wire is wound in a concentrated manner to form a coil, and
flange portions extending in both ways in the circumferential direction from a tip end portion of the extending portion in the radial direction,
the plurality of teeth including
a first tooth,
a second tooth adjacent to the first tooth in the circumferential direction and around which a coil having a phase identical to a coil wound around the first tooth is wound,
a third tooth, and
a fourth tooth adjacent to the third tooth in the circumferential direction and around which a coil having a phase different from a coil wound around the third tooth is wound,
the flange portions each including
a first flange portion of the first tooth extending toward the second tooth, and
a second flange portion of the third tooth extending toward the fourth tooth,
a level of a magnetic resistance from a tip end portion of the first flange portion in the circumferential direction to a center of the extending portion of the first tooth in the circumferential direction being a first magnetic resistance,
a level of a magnetic resistance from a tip end portion of the second flange portion in the circumferential direction to a center of the extending portion of the third tooth in the circumferential direction being a second magnetic resistance, and
the second magnetic resistance being lower than the first magnetic resistance.