US 11,811,281 B2
Stator structure and resolver
Mutsumi Matsuura, Shizuoka (JP); Takashi Nakagawa, Kanagawa (JP); Hiroshi Abe, Shizuoka (JP); and Shinya Suzuki, Shizuoka (JP)
Assigned to MINEBEA MITSUMI Inc., Nagano (JP)
Filed by MINEBEA MITSUMI Inc., Nagano (JP)
Filed on Mar. 8, 2023, as Appl. No. 18/180,474.
Application 18/180,474 is a continuation of application No. 16/962,011, granted, now 11,626,784, previously published as PCT/JP2019/000897, filed on Jan. 15, 2019.
Claims priority of application No. 2018-006652 (JP), filed on Jan. 18, 2018; and application No. 2018-029339 (JP), filed on Feb. 22, 2018.
Prior Publication US 2023/0223829 A1, Jul. 13, 2023
Int. Cl. H02K 24/00 (2006.01); G01D 5/20 (2006.01); H02K 1/16 (2006.01); H02K 1/14 (2006.01); H02K 11/225 (2016.01)
CPC H02K 24/00 (2013.01) [G01D 5/20 (2013.01); H02K 1/14 (2013.01); H02K 1/165 (2013.01); H02K 11/225 (2016.01)] 9 Claims
OG exemplary drawing
 
1. A stator structure of a resolver comprising:
a stator core comprising
a main body,
a plurality of teeth extending in a radial direction of the main body and arranged along a circumferential direction of the main body, and
slots formed between the teeth; and
a coil wound around the teeth via an insulator,
wherein the main body has a plurality of holes arranged along the circumferential direction of the main body on an outer peripheral side of the teeth, and
wherein the plurality of holes comprise a first group of holes arranged at a position overlapping with the tooth in the radial direction so as to be close to the root part of the teeth and a second group of holes arranged at a position overlapping with the slots in the radial direction so as to be close to the slots.