To provide a long-lived coil for pulse magnetic forming which suppresses the occurrence of a gap during impregnation with resin, and to provide its manufacturing method.
A peripheral surface of a shaft portion of a bobbin 2 made of an insulator is wound with a resin-permeable glass cloth tape 3 to a predetermined thickness. A conductor strand 4 coated with a glass cloth tape 6 is wound outside it spirally along the axis of the bobbin 2 to constituted a coil. The conductor strand 4 is wound so that mutually opposed surfaces of adjacent portions of the conductor strand 4 are parallel to each other. A glass cloth 7 after being wound outside it to a predetermined thickness is impregnated with resin 8 to unite together the conductor strand 4 and an insulating layer at its periphery.
COPYRIGHT: (C)2009,JPO&INPIT
| JPS59232403 | INDUCTOR |
| JPS58134408 | INSULATED COIL |
Kiho Fujiura
Cedar Saki Takayoshi
Techno Electric Industry Co., Ltd.
| JP4278504A | ||||
| JP58202506A | ||||
| JP58202507A | ||||
| JP63154035A |