Nidec Corporation

Ting Huang

Shunsuke Murakami

Hiroshi Sambuichi

Yusaku Yoshida

Yu Wang

Honglu Che

Zhipeng Li

Wang Xiaoge

A motor includes a casing including a wall portion and a bottom portion on an outside of the wall portion in an axial direction. The bottom portion includes a bearing holding portion in a center region of the bottom portion, and a base portion between the wall portion and the bearing holding portion. The base portion includes a plate-shaped portion and a protrusion portion in the plate-shaped portion. The protrusion portion includes a first protrusion portion protruding from an outer surface on an outside of the plate-shaped portion in the axial direction toward an outside of the casing in the axial direction, and a second protrusion portion protruding from an inner surface of the plate-shaped portion in the axial direction toward an inside of the casing. The first protrusion portion and the second protrusion portion oppose each other.

Motor

A motor and a driving member are provided. The motor has a rotor centered on and rotatable along a central axis and having a shaft and a bearing holding the shaft to be rotatable; a stator radially opposite to the rotor; a coil winding around the stator; a bearing holder; a bus bar holder on one or the other side of the bearing holder in an axial direction; a substantially cylindrical housing having an opening on a top side in the axial direction. The rotor, the stator, the bearing holder, and the bus bar holder are in the housing. A power bus bar and a signal bus bar are integrally formed on the bus bar holder which axially pushes against and is fixed to the bearing holder; a circuit board and a sensor are between the holders. This structure reduces an axial dimension of the motor and miniaturizes the motor.

Motor and driving member

Embodiments of the present application provide a stator, comprising a coil group is provided with a first end part, a second end part, multiple coils respectively wound on a multiple teeth, and a transition line part configured to connect multiple coils, the first end part is provided with a first overlapping part having the same position as at least a part of the second end part in the circumferential direction, the second end part is provided with a second overlapping part having the same position as the first overlapping part in the circumferential direction, and a coil connecting part is connected with the first overlapping part and the second overlapping part.

Stator and motor

Growing community of inventors

Dalian, China

Ting Huang