JPH11242915A - Parallel multicore cable - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance the reliability of a parallel multicore cable and manufacture it easily by setting, within a specific range, the distance between stranded conductors arranged on the same plane, and the distance from the center of a stranded conductor arranged at an ultimate side edge part to the side edge of excessive insulation part, that is, a terminal insulation width. SOLUTION: Stranded conductors (a) having a cross-sectional area equivalent to 0.5 mm<2> , stranded conductors (b) having a cross-sectional area equivalent to 0.85mm<2> and stranded conductors (c) having a cross-sectional area of 1.25mm<2> are arranged on the same plane. When it is assumed that the distance between the respective stranded conductors is A, the width of an excessive insulation part is C, and the width from the center of the stranded conductor at the side edge part to the edge of the excessive insulation part is B, A:B=2:1 to 1:2 should be established. Thereby, the stranded conductors are arranged in the parallel multicore form, for instance, in the form of 14, 6 or 10 cores by means of combination of two films or an extrusion method, and thus, a parallel multicore cable having the excessive insulation part of a predetermined width can easily be produced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a parallel multi-core electric wire used for wiring various electric devices, and more particularly to a parallel multi-core electric wire suitable for electric wiring for automobiles.

[0002]

2. Description of the Related Art First, the definition of terms used in the present invention will be described. Arrangement refers to the order of physical arrangement of electric wires or conductors, and wiring refers to the state of electrical connection in a harness. Shall be. Taking conventional electric wires for automobiles as an example, as in a case of a harness for automobiles, each electric wire is assembled with desired wiring. According to this method, an increase in the number of devices to be connected causes an increase in the diameter of the harness, an increase in wiring errors, and an increase in the complexity of the assembling operation, which has been a chronic problem. In order to solve this problem, a flat cable which can be connected collectively and has excellent wiring workability has been proposed and started to be used.

[0003] A flat cable is made of a copper foil punched to match a desired wiring or a flat copper wire arranged at a predetermined interval by using a plastic insulating film of polyester, polyimide, polyethylene, polypropylene, aramid, polyether sulfone, or the like. A flat harness with excellent workability is obtained by arranging a connector at the end.

There are various proposals for such a method of manufacturing a flat cable. For example, Japanese Patent Application Laid-Open Nos. Hei 6-28935, Hei 7-21853, Hei 7-1419.
No. 24, JP-A-7-141934, JP-A-7-141934
JP-A-226574 is known.

[0005]

The flat cable described in each of the above publications has the following features. 1) Since a punched copper foil or a flat wire is used as a conductor, the punching die can be changed for each required wiring. Since it is necessary to prepare parallel multi-core wires with different arrangements, if a harness is used, the cost is higher than a harness in which conventional wires are assembled one by one. Since the wire is used as a conductor, there is a problem that a “twisted wire” used particularly in a portion where reliability is required cannot be incorporated.

[0006]

DISCLOSURE OF THE INVENTION The present invention solves these problems and has high reliability, is easy to manufacture, and has a multi-core parallel electric wire utilizing a stranded conductor size of any design and a combination thereof according to the application according to the application. The outline is as described below.

A plurality of stranded conductors are arranged on the same plane at a fixed distance between conductors (from the center to the center), that is, a prescribed distance A between the conductors, and have surplus insulator portions having a width C at both ends. A: B = 2 when the distance from the center of the stranded conductor arranged at the outermost end to the side edge of the surplus insulator, that is, the terminal insulator width is B, which is a parallel multi-core electric wire. : 1
It is a parallel multi-core electric wire characterized by having a ratio of 1: 2, and a plurality of stranded conductors may have the same configuration outer diameter, or may have a combination of several types or configurations having different outer diameters.

Further, the stranded conductor adjacent to at least one surplus insulator portion may be a twisted covered wire, and the insulating layer may be formed by extrusion coating or lamination of two plastic films. .

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1A shows a stranded conductor a having a cross-sectional area of 0.5 mm ^2, a stranded conductor b having a cross-sectional area of 0.85 mm ^2, and a cross-sectional area 1 used in the present invention. .25m
The stranded conductors c equivalent to m ² are arranged in the arrangement shown in the figure and the distance A between the stranded conductors (specified conductor distance) A, the width C of the surplus insulator portion, and the center of the stranded conductor at the side end. When the width to the end of the surplus insulator portion (terminal insulator width) is B, A: B = 2:
In the cross section of the example shown as 1 to 1: 2, 14 cores, 6 cores, 10 cores, and twisted pair d are shown, and (b) is a portion surrounded by a circle (a). In an enlarged sectional view,
The distance between the stranded conductors (distance between prescribed conductors) A, the width C of the surplus insulator portion, and the width (terminal insulator width) B from the center of the stranded conductor at the side end to the end of the surplus insulator portion It is shown for easy understanding.

[0010] Table 1 shows the specific types of conductors, arrangements, and conductor spacings. These configurations can be understood very easily by comparing this with FIG. There will be. 1 and 2 consist of the same stranded conductors a and b as shown in FIG.

[0011]

[Table 1]

FIG. 2 (a) is a front view showing the above-mentioned parts, which are separated from each other, for example, a common part for a driver door / passenger door, and a special part for a passenger door. In the case where the cable is used for the common part of the driver's seat door and the rear seat door, and the cable is a twisted pair, the wiring for the passenger's seat side door can be obtained by connecting both sides around the center as shown in (b). . If both sides are connected to each other around the center, wiring for the driver side door can be obtained. Furthermore, if the connection is made in combination with the above, wiring for the rear seat door can be obtained.

Next, for the parallel multi-core electric wire, the prescribed conductor distance A was set to 3 mm, the width of the insulator portion was changed, and the ratio of the width of the terminal insulator portion to the insulator portion was changed. Value in mm and the original thickness of 0.4
The ratio of change when mm is set is shown. A: B =
The results of trial production in the range of 2: 1 to 1: 2 are referred to as Examples 1 to 6, and those in which the terminal insulator width B is out of the range of the present invention are referred to as Comparative Examples 1 to 4 and shown in Table 2. Was.

[0014]

[Table 2]

As can be seen from Table 2, the prescribed distance between conductors A = 3
If the ratio of the terminal insulator width B to mm is 30% or 40% shown in Comparative Examples 1 and 2, the conductor spacing after connection is shorter than the specified conductor spacing, which is inappropriate. Further, as shown in Embodiment 1, when the terminal insulator width B is 50% with respect to the prescribed conductor distance A = 3 mm, an interval matching the prescribed conductor distance 3 mm is obtained. Example 2
When the terminal insulator width B with respect to the prescribed conductor distance A is in the range of 50% or more and less than 200% as shown in FIGS. 6 to 6, a sufficient margin for connection can be obtained, and an interval several times larger than the prescribed conductor interval can be obtained. It is suitable for being performed. Further, when the terminal insulator width B with respect to the prescribed conductor distance A is 200%, the thickness of the surplus insulator portion is reduced by about 5% from the specified value, and when it is 250%, the thickness of the surplus insulator portion is reduced. Is reduced by about 20% from the specified value, making connection difficult.

[0016]

According to the present invention, the stranded conductors are arranged in multiple parallel cores by combining or extruding two films, and the parallel conductor having a predetermined width lug (the width of the surplus insulator) is obtained. A multi-core electric wire can be provided very easily.

[Brief description of the drawings]

1A is a cross-sectional view of a structural example of a parallel multi-core electric wire obtained by the present invention, and FIG.

FIGS. 2A and 2B are a front view and a front view of an application example of a parallel multi-core electric wire for an automobile, respectively.

[Description of symbols] a cross-sectional area 0.5 mm ² equivalent stranded conductor b sectional area 0.85 mm ² equivalent stranded conductor c sectional area 1.25 mm ² equivalent stranded conductor d twisted pairs A prescribed distance between conductors B Terminal insulator width C Excess insulator width

Claims (5)

[Claims] 1. A plurality of stranded conductors having a fixed conductor distance A
(Hereinafter referred to as a prescribed conductor distance A) In a parallel multi-core electric wire arranged on the same plane at an end and provided with an excess insulator portion having a width C at the end, the twist arranged at the outermost end When the distance B from the center of the wire conductor to the side edge of the surplus insulator portion (hereinafter referred to as terminal insulator width B), A: B = 2: 1 to 1: 2 is characterized. Parallel multi-core wire. 2. The parallel multi-core electric wire according to claim 1, wherein the plurality of stranded conductors are formed of two or more kinds having the same or different outer diameters. 3. The parallel multi-core electric wire according to claim 1, wherein the stranded conductor adjacent to at least one of the surplus insulator portions is a twisted pair wire. 4. The number of cores is increased by integrating several types of parallel multi-core electric wires having an excess insulator portion having a width C at the end portion according to claim 2 by using the excess insulator portion. Parallel multi-core wire. 5. The parallel multi-core electric wire according to claim 1, wherein the insulating layer is formed by extrusion coating of plastic or lamination of two plastics.