US 11,874,141 B2
Resolver
Shiro Shimahara, Ueda (JP)
Assigned to SHIRO SHIMAHARA, Ueda (JP); and FUTABA CORPORATION, Mobara (JP)
Appl. No. 17/602,493
Filed by Shiro Shimahara, Ueda (JP); and Futaba Corporation, Mobara (JP)
PCT Filed Apr. 7, 2020, PCT No. PCT/JP2020/015661
§ 371(c)(1), (2) Date Oct. 8, 2021,
PCT Pub. No. WO2020/209252, PCT Pub. Date Oct. 15, 2020.
Claims priority of application No. 2019-076418 (JP), filed on Apr. 12, 2019.
Prior Publication US 2022/0205813 A1, Jun. 30, 2022
Int. Cl. G01D 5/20 (2006.01); G01B 7/30 (2006.01)
CPC G01D 5/20 (2013.01) [G01B 7/30 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A resolver for detecting a displacement amount of a passive body, comprising:
an excitation winding; and
a detection winding,
wherein the detection is based on a detection signal outputted from the detection winding as a result of an excitation signal inputted to the excitation winding,
wherein at least one of the excitation winding and the detection winding is composed of a combination of one or more sheet coils having one or more bore portions,
wherein a plurality of coil-storing grooves are arranged at prescribed intervals in the lengthwise direction of a magnetic core to which the sheet coils are attached,
wherein the plurality of coil-storing grooves are formed in a direction perpendicular to the lengthwise direction in a first core surface of the magnetic core, and
wherein the excitation winding or the detection winding is accommodated in the plurality of coil-storing grooves.