Motor and method of manufacturing motor

摘要

An insulator of a motor includes a body portion and a wire guide portion. The body portion is arranged to cover an upper surface, a lower surface, and circumferential side surfaces of each of a plurality of teeth. The wire guide portion is arranged to project downward from the body portion. A drawn-out portion of an electric wire which extends from a coil is arranged to reach a land portion arranged on a lower surface of a circuit board after passing through the wire guide portion. In addition, an area of contact between the drawn-out portion and the wire guide portion is arranged at an axial height lower than that of the lower surface of the circuit board.

主权项

1. A motor comprising:
a stationary portion; and a rotating portion supported to be rotatable with respect to the stationary portion; wherein the stationary portion includes:
a plurality of teeth arranged to extend radially with a central axis extending in a vertical direction as a center;an insulator made of a resin and attached to the teeth;coils each of which is defined by an electric wire wound around the insulator; anda circuit board arranged below the coils, and including a land portion arranged on a lower surface thereof; the rotating portion includes a magnet or magnets arranged radially opposite to the teeth; the insulator includes:
a body portion arranged to cover an upper surface, a lower surface, and circumferential side surfaces of each of the teeth; anda wire guide portion arranged to project downward from the body portion;the electric wire includes a drawn-out portion extending from one of the coils and arranged to reach the land portion arranged on the lower surface of the circuit board after passing through the wire guide portion; an area of contact between the drawn-out portion and the wire guide portion is arranged at an axial height lower than that of the lower surface of the circuit board; the wire guide portion includes:
a first projecting portion arranged to project downward from the body portion on a radially inner side of the land portion; anda flange portion arranged to extend from the first projecting portion radially inward and to both sides in a circumferential direction; a lower surface of the flange portion is a guide surface arranged to guide the drawn-out portion; and the guide surface is arranged at an axial height lower than that of the lower surface of the circuit board and on an upper side of the drawn-out portion.