Sumitomo Heavy Industries, Ltd.

Kotaro Wada

Takashi Ikeda

Doutaro Usui

A flat coil includes at least first and second coil layers having the shape of a ring and stacked, each of the first and second coil layers includes a pair of linear portions facing each other in a first direction and a pair of end portions facing each other in a second direction crossing the first direction, and the flat coil is bent on at least one of the end portions. The flat coil is an &#x3b1;-winding coil and is bent toward the first coil layer from the second coil layer. A first end face of the first coil layer in the second direction and a second end face of the second coil layer in the second direction are positioned on the same plane at the end portion to be bent.

Coil and method of manufacturing coil

A linear motor includes a mover movable in a first direction and a stator. A yoke includes a pair of back yokes provided opposite to each other so as to sandwich the mover in a second direction perpendicular to the first direction. A plurality of field magnets are provided on an inner lateral surface of each of the pair of back yokes in the first direction. A pair of auxiliary magnets are provided (i) on end lateral surfaces of the back yokes and (ii) in the vicinity of the field magnets at the extreme end provided in the back yoke. A magnetic member is provided to surround the pair of auxiliary magnets.

Growing community of inventors

Kanagawa, Japan

Kotaro Wada