Top Co., Ltd.

Hiroaki Asakura

Shingo Yamada

Kenji Sasaki

Tadashi Uno

Takayuki Kai

Nobuyuki Tanaka

A rolling bearing has an inner ring attached to a rotating shaft out of contact with a first end surface, and an outer ring is fitted onto an inner peripheral surface of a housing in contact with the first end surface. A sliding element is provided between a second end surface and the first end surface. A retaining portion is provided between the sliding element and the first end surface. A biasing portion is provided between the retaining portion and the first end surface to bias the retaining portion toward a second side in a lamination direction. The rotating shaft, the housing, the inner ring, the outer ring, a rolling element, the sliding element, the retaining portion, and the biasing portion are formed of a conductive material. The rotating shaft and the housing are electrically connected by the sliding element, the retaining portion, and the biasing portion.

Motor structure for electrolytic corrosion protection of bearing

The rotary machine includes a rotor rotatably provided and a resin-molded stator. The stator includes a stator core, a coil, and a mold portion. A tooth portion in the stator core includes first and second facing portions. The first facing portion includes a first facing surface where an air gap with the rotor becomes a first distance. The second facing portion is integrated with the first facing portion in the circumferential direction centered at the rotation axis of the rotor, and includes a second facing surface where the air gap becomes a second distance wider than the first distance. The second facing portion includes a groove portion on the second facing surface. The mold portion includes a first mold portion. The first mold portion covers the second facing portion, is provided at the groove portion, and includes a third facing surface where the air gap becomes the first distance.

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Echizen, Japan

Hiroaki Asakura