Coil and method of manufacturing coil
AssigneeSumitomo Heavy Industries, Ltd.
InventorsTakashi Ikeda, Doutaro Usui, Kotaro Wada
Life of this patent
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Abstract
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 α-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.
Claims7
A method of manufacturing a coil, the method comprising:
- a first step of preparing a flat coil including at least first and second coil layers that have the shape of a ring and are stacked, each of the first and second coil layers including 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
- a second step of bending the flat coil on at least one of the end portions toward the first coil layer from the second coil layer,
- wherein in the first step, a level difference is formed so that a first end face between the 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 an inner peripheral side at the end portion to be bent.
A flat coil comprising:
- a first coil layer and a second coil layer, the first and second coil layers have a ring shaped and are stucked, each of the first and second coil layers including 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, the flat coil being bent on at least one of the end portions,
- wherein the flat coil is an α-winding coil and is bent toward the first coil layer from the second coil layer, and
- 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.
Dependencies are inferred from the claim text.