Nidec Sankyo Corporation

Sankyo Seiki Mfg. Co., Ltd

Toshio Ueno

Toshio Yamamoto

Shigeru Ozawa

Fujio Iwashita

Akira Taruta

A motor may include an urging member which is mounted on a fixed body for urging the bearing, and a pair of engaging grooves formed on the fixed body. The urging member may includes a pair of hook parts which are bent from respective tip ends of a pair of side plate parts. When the urging member is mounted on the fixed body, a pair of the hook parts are inserted from open ends and engaged with a pair of the engaging grooves and, when an outward force is applied to the urging member, the hook parts abut with an opposite inner wall of the engaging grooves located on a tip end side in the axial line direction of the motor to prevent the hook parts from being disengaged from the engaging grooves.

Motor

A motor includes a stator having a stator core, a rotor, a case, and a bearing. The motor may further include a bearing hold member provided with a through hole into which the bearing is inserted and which is disposed at one end side to the stator core and a spring member held by the case such that at least one part of the spring member overlaps the bearing hold member at one end side to the bearing hold member to urge the bearing in the through hole to the rotor shaft. A first positioning projection is formed in one of the stator core and the bearing hold member so as to protrude on a side of the other and a first fitting hole is formed in the other of the stator core and the bearing hold member so as to be fitted to the first positioning projection.

Motor with thrust bearing holder

A motor comprises a motor rotation shaft, a first thrust bearing which supports one end of the motor rotation shaft and a second thrust bearing which supports the other end of the motor rotation shaft to control positioning in a thrust direction of the motor rotation shaft. The first thrust bearing further comprises a bearing for supporting one end of the motor rotation shaft and is movable in a shaft direction of the motor rotation shaft, a guide member for guiding the movement of the bearing in the shaft direction and a plurality of pre-loaded elements for opposing the force generated by the bearing in the shaft direction. The pre-loaded elements are evenly spaced around the motor shaft.

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Nagano, Japan

Toshio Ueno