Title:
MANUFACTURING METHOD OF INSULATED WIRE
Document Type and Number:
Japanese Patent JP2018170260
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a manufacturing method of an insulated wire including an insulation film having a hole, the method capable of appropriately detecting a defect that potentially affects insulation properties thereof, thereby allowing a manufacture of the insulated wire with stable quality.SOLUTION: A manufacturing method of an insulated wire 1 includes: a step of preparing a conductor 10 having a linear shape; a step of obtaining an insulated wire 1 having the conductor 10 and an insulation film 20 covering the conductor 10; and a step of detecting a first capacitance between the insulated wire 1 and a first electrode 40 arranged outside in a diameter direction of the insulated wire 20 and facing an outer peripheral surface of the insulated wire 20, so as to inspect a formation state of the insulation film 20 according to a relation between porosity of the insulation film 20 and the first capacitance. The first electrode 40 includes a plurality of units 40a, 40b, 40c and 40d having a divided shape to be alienated with one another in a circumferential direction of the conductor in a cross section perpendicular to a longer direction of the conductor 10, and extending along the longer direction of the conductor 10.SELECTED DRAWING: Figure 2
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Inventors:
OTA SHINYA
TAMURA YASUSHI
YOSHIDA KENGO
TAMURA YASUSHI
YOSHIDA KENGO
Application Number:
JP2017069198A
Publication Date:
November 01, 2018
Filing Date:
March 30, 2017
Export Citation:
Assignee:
SUMITOMO ELECTRIC INDUSTRIES
SUMITOMO ELECTRIC WINTEC INC
SUMITOMO ELECTRIC WINTEC INC
International Classes:
H01B13/16; H01B13/00
Attorney, Agent or Firm:
Shuhei Kitano
Katsuya Tanaka
Katsuya Tanaka