Patent ID: 11888371
Assignee: NIDEC CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 12:
13. A motor comprising:
a rotor rotatable about a center axis extending in a vertical direction;
an annular stator located on a radial outside of the rotor; and
a rotation position detector located above the stator to detect a rotation position of the rotor; wherein
the stator includes a stator body including a coil and a stator core, and a bus bar assembly located between the stator core and the rotation position detector;

the bus bar assembly includes a bus bar made of a conductor, a shield to shield magnetism generated by the bus bar, and a bus bar holder to hold the bus bar and the shield, the conductor and the shield each being plate-shaped;
the bus bar includes a bus bar body portion held by the bus bar holder in a posture in which a plate surface is directed in the vertical direction, bus bar through holes penetrating the bus bar in a plate thickness direction, and a coil wiring portion and an external power source wiring portion respectively extending from different end portions of the bus bar body portion, the bus bar body portion being arc-shaped;
the shield includes through hole shielding portions that individually overlap the bus bar through holes when viewed from the vertical direction;
the external power source wiring portion extends linearly from the end portion of the bus bar body portion to an outer peripheral side when viewed from the vertical direction, and is provided along a width direction of the external power source wiring portion; and
some of the through hole shielding portions are located in the external power source wiring portion, and others of the through hole shielding portions are located in the bus bar body portion or the coil wiring portion.