Flat curled cord
AssigneesAutonetworks Technologies, Ltd., Sumitomo Wiring Systems, Ltd., Sumitomo Electric Industries, Ltd.
InventorsKenichiro ARAKI, Toyoki FURUKAWA
Life of this patent
Estimating the term…
Abstract
A flat curled cord 1 is formed by winding an insulated wire 2 into a helical shape, the insulated wire 2 including a conductor 12 and an insulation coating 13 covering the outer periphery of the conductor 12. The insulated wire 2 is a flat wire including the conductor 12 and the insulation coating 13 along an axial direction each having a flat cross-sectional shape. Flat surfaces, which are outer side surfaces of the flat wire 2 along a width direction of the flat shape, are facing outward and inward of the helical shape.
Claims7
A flat curled cord formed by winding an insulated wire into a helical shape, the insulated wire including a conductor and an insulation coating covering an outer periphery of the conductor,
- the insulated wire being a flat wire including the conductor and the insulation coating along an axial direction each having a flat cross-sectional shape,
- flat surfaces facing outward and inward of the helical shape, the flat surfaces being outer side surfaces of the flat wire along a width direction of the flat shape, and
- if a round curled cord is formed by winding a round wire having the same conductor cross-sectional area and insulation coating thickness as the flat wire and having a circular cross-section intersecting an axial direction into a helical shape in such a manner as to have the same inter-turn interval of the helical shape, inner diameter and natural length as the flat curled cord,
- a spring constant of the flat curled cord being 90% or more of a spring constant of the round curled cord.
Dependencies are inferred from the claim text.