Nidec Corporation

Tsubasa Hirayama

Takayuki Makino

Masato Aono

Masahiro Kokubo

A shaft of a motor includes a first shaft having a tubular shape extending in an axial direction, a lid portion disposed in one axial end portion of the first shaft, a second shaft extending on one axial side from the lid portion, a first shaft through hole penetrating the first shaft in a radial direction, and a second shaft through hole communicating with an inside of the first shaft and an external space of the shaft. The lid portion and the second shaft have conductivity. The second shaft through hole is disposed on one axial side with respect to the first shaft through hole. The second shaft is in contact with an electrical discharging device that electrically connects the shaft and the housing of the motor.

Motor

An electrical discharging device electrically connects a shaft of a motor and a housing. A plate portion of the housing has an opening through which the shaft is inserted and expands in a radial direction. A cover member is disposed on the plate portion and covers the electrical discharging device. A seal member is disposed between the shaft and the plate portion in the opening. The through hole is disposed in the plate portion and/or the cover member. The electrical discharging device is accommodated in an accommodation space surrounded by the plate portion and the cover member. The accommodation space is connected to the outside through the through hole.

Growing community of inventors

Kyoto, Japan

Tsubasa Hirayama