STATOR WITH CORE INCLUDING DIVIDED CORES, AND ELECTRIC MOTOR

摘要

Provided is a stator that can easily attach a coil to a tooth and that can reduce concentration of stress generated in the core during the operation. The stator includes a core with an annular back yoke, and a plurality of teeth aligned in a circumferential direction, each tooth extending toward a radially inside from the back yoke; and a coil wound around each of the plurality of teeth. The core includes a plurality of divided cores aligned in the circumferential direction. Each divided core includes the tooth, and a divided back yoke extending from an end on a radially outside of the tooth to a first circumferential side. A radial width of the divided back yoke is smaller than or equal to a circumferential width of the tooth. A connecting surface is arranged at an end on a second circumferential side of the divided yoke, the connecting surface being a plane or a convex surface extending from a side surface on the second circumferential side of the tooth to an outer circumferential surface of the divided back yoke.

主权项

1. A stator of an electric motor, comprising:
a core including an annular back yoke, and a plurality of teeth aligned in a circumferential direction and extending toward radially inside from the back yoke; and a plurality of coils wound around each of the plurality of teeth, wherein the core includes a plurality of divided cores aligned in the circumferential direction, each of the plurality of divided cores includes:
the tooth; anda divided back yoke extending from a radially outer end of the tooth toward a first circumferential side and constituting a part of the back yoke, a radial width of the divided back yoke being smaller than or equal to a circumferential width of the tooth, a connecting surface is provided at an end of a second circumferential side, which is opposite to the first circumferential side, of the divided yoke, the connecting surface being a plane or a convex surface extending from a side surface of the second circumferential side of the tooth to an outer circumferential surface of the divided back yoke.