US 12,323,001 B2
Stator and motor including the stator
Akihiro Miyoshi, Kawasaki (JP); Mitsuyoshi Oba, Ebina (JP); and Keisuke Kurihara, Tokyo (JP)
Assigned to TBK Co., Ltd., Tokyo (JP)
Appl. No. 18/251,894
Filed by TBK Co., Ltd., Tokyo (JP)
PCT Filed Nov. 6, 2020, PCT No. PCT/JP2020/041480
§ 371(c)(1), (2) Date May 5, 2023,
PCT Pub. No. WO2022/097261, PCT Pub. Date May 12, 2022.
Prior Publication US 2023/0421001 A1, Dec. 28, 2023
Int. Cl. H02K 1/14 (2006.01); H02K 1/18 (2006.01); H02K 21/22 (2006.01)
CPC H02K 1/148 (2013.01) [H02K 1/187 (2013.01); H02K 21/227 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A stator comprising:
a yoke portion comprising a plurality of divisional yokes, the divisional yokes being circular arc-shaped block bodies rectangular in cross section;
a fixing member fixing the plurality of block bodies arranged annularly;
a plurality of tooth portions erected on a circumferential face of the yoke portion; and
a coil wound around the plurality of tooth portions,
wherein a shape and a dimension of each tooth portion are configured such that when engaging portions of the divisional yoke adjacent to each other are each engaged with an engaging portion of the tooth portion, opposite abutting faces of the adjacent tooth portions abut against each other, and
a dimension of the divisional yokes is configured such that when the abutting faces of adjacent tooth portions abut against each other, a gap exists between an end face of a divisional yoke and an end face of an adjacent divisional yoke.