Composite electric wire
A wire and wire technology, used in circuits, conductive materials, conductive materials, etc., can solve the problems of poor electrical characteristics of wires, electrical corrosion of aluminum wires, and difficult to handle, to avoid oxide film or electrical corrosion, high-voltage connection strength. , handle easy effects
Inactive Publication Date: 2011-01-05
YAZAKI CORP
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Problems solved by technology
[0011] In addition, when the aluminum wire is used as the whole or part of the wire, it has the characteristic of forming an oxide film on the surface of the aluminum wire when the outer surface of the aluminum wire is in contact with the air, because the oxide film will affect the electrical characteristics of the wire. Therefore, for example, when it is applied to a vehicle-mounted wiring harness and connected to a terminal, there is a problem that it is very difficult to deal with the oxide film and the like.
In addition, when used as a composite wire in combination with different types of metals, there is also the problem of galvanic corrosion of the aluminum wire due to the potential difference between the different types of metals caused by the contact of these different types of metals.
Method used
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[0037] Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. figure 1 It is the perspective view of the electric wire of embodiment, figure 2 It is a sectional view of the conductor of the electric wire of embodiment, image 3 It is an enlarged view of the contact portion of the copper wire material and the copper-clad aluminum wire material of the electric wire of the present invention. In addition, the longitudinal direction of the composite electric wire (wire main body) is referred to as "Z direction", and the plane perpendicular to the Z direction, that is, the plane including the cross section of the electric wire main body is referred to as "X-Y plane".
[0038] Such as figure 1 As shown, the composite electric wire 1 of this embodiment has: a wire main body W composed of a central conductor AL described later and an outer layer conductor CU extending along the outer peripheral surface of the central conductor AL...
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Provided is a composite electric wire, which is intended to realize a light weight and improve a mechanical strength at the same time and which is enabled to improve the reliability by avoiding the problem of oxide coating or electric erosion so that the electric wire may be easily handled for use as a car-mounted wire harness. The composite electric wire comprises an electric wire body (W) composed of center conductors (AL) and outer-layer conductors (CU) arranged to extend in a Z-direction along the outer circumferences of the center conductors (AL) and to enclose the center conductors (AL). In the electric wire body (W), the center conductors (AL) composed of copper-coated aluminum element wires (20) of a (1 + 6) number are sectionally positioned at the center portion of the electric wire body (W) in an X-Y plane, and the outer-layer conductors (CU) composed of twelve copper element wires (10) are positioned in the outer circumference portion arranged around the center portion of the X-Y plane. Moreover, the outer-layer conductors (CU) make contact at their outer circumferences with the outer circumferences of the center conductors (AL), thereby to make their electric connections.
Description
technical field [0001] The present invention relates to a composite electric wire in which different types of metal wires are arranged in a central portion and an outer peripheral portion, and particularly relates to a composite electric wire suitable for use as a wire harness mounted on a vehicle such as an automobile. Background technique [0002] Conventionally, copper electric wires have generally been used as wiring harnesses arranged in vehicles such as automobiles in view of good electrical conductivity. However, in recent years, in addition to the shortage of copper resources and the price increase due to the shortage, the weight reduction of vehicles and the reduction in fuel consumption due to the weight reduction, and the recycling of metal resources have also been considered. Expectations for aluminum wire are getting higher and higher. [0003] Because aluminum has a high electrical conductivity inferior to copper, good ductility, and light weight (less than 1 / ...
Claims
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IPC IPC(8): H01B7/00C23C10/28H01B5/10
CPCH01B1/026H01B7/0045H01B1/023C23C10/28H01B7/0009
Inventor 渡边仁
Owner YAZAKI CORP