Nidec Corporation

Takanobu Oyama

Yuki Ishikawa

Keisuke Fukunaga

Toshiya Okamoto

Takashi Hattori

Masato Aono

Takahiro Kizu

Yuichi Nishikawa

Takahiro Hisada

Ryosuke Kozu

Yuta Takahashi

A motor shaft of a drive apparatus extends along a first rotation axis extending in an axial direction. A gear portion is connected to one axial side of the motor shaft. A housing tubular portion extends in the axial direction and holds a stator on the radially inner surface. The first lid portion is attached to the other axial end portion of the housing tubular portion. The first bearing of the motor bearing that rotatably supports the motor shaft is a rolling bearing disposed on the first lid portion, and rotatably supports the motor shaft on the other axial side with respect to the rotor. The motor shaft and the first lid portion are electrically insulated by the first bearing.

Drive apparatus and vehicle

A drive device includes a motor, a housing, an oil passage in the housing, an oil pump in which a portion of the oil passage is provided, and a strainer inside the housing and in which a portion of the oil passage is provided. The oil passage includes an oil sump in which oil is accumulated and a suction path connecting the oil sump and the oil pump. A central axis of the oil pump extends in a direction intersecting the vertical direction. The strainer is in the suction path. The strainer includes a suction port to suction oil from the oil sump, a discharge port to discharge oil toward the oil pump, and a filter. The suction port opens downward in the vertical direction. The discharge port opens in a direction intersecting the vertical direction toward the oil pump.

Drive device

The motor unit includes: a motor having a motor shaft that rotates around a motor axis extending along a horizontal direction; a gear section connected to the motor shaft on one side of the motor shaft in an axial direction; a housing that houses the motor and the gear section; and an oil contained in the housing. The housing includes a motor housing section that has inside a motor chamber for housing the motor, and a gear housing section that has inside a gear chamber for housing the gear section. The housing is provided with an oil passage along which the oil circulates for cooling the motor. A pump that supplies the oil to the motor is provided in a channel of the oil passage. The pump has a pump motor. A rotation axis of the pump motor is parallel to the motor axis.

Motor unit

A motor includes a rotor including an axially extending shaft, a stator, a housing, a heat sink disposed axially above the stator, a board fixed axially above the heat sink, a connector disposed radially outside the housing, and a connector pin accommodated in the connector. The heat sink includes a main body, and a protrusion which is continuous with the main body, the protrusion extending radially outward of the housing. The connector, the protrusion, and the board overlap in this order when viewed from axially below. The connector pin is positioned radially outside the protrusion.

Motor including connector and connector pin and electric power steering device including same

A bush attached to a through hole of a casing of a motor holds a conductor. The bush includes a main body, an insertion hole, a flange, and a rib. The main body includes a first end surface, a second end surface facing the first end surface in a first direction, and side surfaces between the first end surface and the second end surface. The insertion hole penetrates an inside of the main body in the first direction, and allows the conductor to pass through. The flange protrudes from a side surface in a direction perpendicular or substantially perpendicular to the first direction. The rib protrudes from the side surface in a direction perpendicular or substantially perpendicular to the first direction.

Growing community of inventors

Kyoto, Japan

Takanobu Oyama