Pcoil and non-contact power supply device

Abstract

A coil according to one embodiment of the present invention is a coil in which a first electric wire on an inner peripheral side and a second electric wire on an outer peripheral side are wound side by side to connect ends of the electric wires with each other, and the coil includes a first region where the first electric wire abuts on the second electric wire of another adjacent turn and separates from the second electric wire of a same turn.

What is claimed is: 
     
         1 . A coil in which a first electric wire is disposed on an inner peripheral side in a winding direction, a second electric wire is disposed on an outer peripheral side in the winding direction, and the electric wires are wound side by side to connect ends of the electric wires with each other,
 wherein the second electric wire on the outer peripheral side is disposed in a spiral shape at regular intervals, and in the interval of the second electric wire, the first electric wire on the inner peripheral side is disposed to meander so as to repeatedly abut on and separate from the adjacent second electric wire.   
     
     
         2 . The coil according to  claim 1 , wherein sections where the first electric wire and the second electric wire abut on each other are bonded. 
     
     
         3 . A non-contact power supply device comprising:
 a board made of metal or made of resin; and   the coil according to  claim 1  which is disposed directly on the board or with a magnetic core plate interposed therebetween.