US 12,231,015 B2
Rotating electrical machine
Mitoru Yabe, Tokyo (JP); Takayuki Nakao, Tokyo (JP); Toshihiro Matsunaga, Tokyo (JP); and Takashi Yamamoto, Tokyo (JP)
Assigned to Mitsubishi Electric Corporation, Tokyo (JP)
Appl. No. 17/800,408
Filed by Mitsubishi Electric Corporation, Tokyo (JP)
PCT Filed Apr. 2, 2020, PCT No. PCT/JP2020/015169
§ 371(c)(1), (2) Date Aug. 17, 2022,
PCT Pub. No. WO2021/199399, PCT Pub. Date Oct. 7, 2021.
Prior Publication US 2023/0099339 A1, Mar. 30, 2023
Int. Cl. H02K 5/10 (2006.01); H02K 1/12 (2006.01)
CPC H02K 5/10 (2013.01) [H02K 1/12 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A rotating electrical machine, comprising;
a rotor shaft supported by bearings,
a rotor attached to the rotor shaft and rotates with the rotor shaft,
a stator that surrounds the rotor through a gap so that the rotor can rotate,
a frame that surrounds the rotor and the stator, wherein, an outer circumference of the stator is attached to an inner circumference of the frame, and
an annular member provided along the inner circumference of the frame so that the entire circumference of the outer circumference of the annular member extends over the entire circumference of the inner circumference of the frame and contacts with the frame over the entire circumference of the inner circumference of the frame to prevent foreign matter existing at the boundary part between the frame and the stator from moving to a region different from the boundary part.