JPS608338Y2 - wiring code - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a wiring cord, and particularly to a wiring cord having high bending strength.

BACKGROUND ART Conventionally, cords used in headphones and the like of communication equipment are known to have various structures, but all cords have the disadvantage that they are prone to breakage if they are repeatedly bent.

This invention was made in view of the above points, and the object is to provide a wiring cord that has high bending strength and is difficult to break.

In order to achieve this purpose, this invention consists of a sheathing member made of an elongated metal coil spring that is grounded during use, and a flexible sheathing member that runs loosely through the sheathing member and prevents the sheathing member from elongating in the axial direction. The reinforcing core wire is composed of a reinforcing core wire and a plurality of insulated conductive wires that are loosely passed through the outer cover member together with the reinforcing core wire.

An embodiment of this invention will be described below based on the accompanying drawings.

FIG. 1 is a perspective view of a wiring cord according to this embodiment, and FIG. 2 is a plan view of FIG. 1.

This wiring cord 1 consists of an outer covering member 11 made of an elongated metal coil spring, a flexible reinforcing core wire 12 and a plurality of insulated conductive wires 13 loosely passed through the outer covering member 11.

Here, the reinforcing core wires passing through the outer cover member 11 at predetermined intervals are made of nylon string or the like having high tension, and prevent the outer cover member 11 from elongating due to the tension in the axial direction.

On the other hand, the insulated conductive wire 13, which is inserted into the jacket member 11 together with the reinforcing core wire 12 at a predetermined interval, is composed of at least a pair of a positive insulated conductive wire 13-1 and a negative insulated conductive wire 13-2.

These bipolar insulated conductive wires 13-1, 13-2 are separated and inserted into the jacket member 11, but these bipolar insulated conductive wires 13-1, 13-2 are arranged so that they cross each other. Alternatively, the reinforcing core wire 12 may be wound around the reinforcing core wire 12 and inserted into the outer covering member 11.

Each of the insulated conductive wires 13 is constituted by a conductive wire 13a made of a single or stranded annealed copper wire covered with an insulating coating layer 13b made of soft resin or the like.

The insulated conductive wire 13-1 on the positive electrode side and the insulated conductive wire 13-2 on the negative electrode side, which are composed of two or more pairs, are distinguished, for example, by applying different colors.

In the wiring cord 1 configured in this way, the outer covering member 11 is made of a metal coil spring, the reinforcing core wire 12 is flexible, and there is a gap between the outer covering member 11, the reinforcing core wire 12, and the insulated conductor wire 13. Since the insulated conductive wire 13 is provided, it not only has excellent flexibility but also has high bending strength, so that breakage of the insulated conductive wire 13 due to bending can be prevented.

Furthermore, regarding the tension in the axial direction of the outer covering member 11,
Since the reinforcing core wire 12 prevents the insulated conductor wire 13 from breaking due to tension.

In addition, the positive electrode side insulated conductor wire 13-1 and the negative electrode side insulated conductor wire 13-
2 are wound around the reinforcing core wire 12 so as to intersect with each other, and when positive and negative currents are passed through the edge conductors 13-1 and 13-2, respectively, the magnetic field generated thereby is At the intersection of the edge conductors 13-1 and 13-2, they cancel each other out, reducing the reactance and reducing the impedance of the wiring cord 1.

Therefore, when this wiring cord 1 is used for wiring for weak current communication equipment, etc., there is an advantage that the voltage drop and power loss due to this wiring cord 1 are reduced.

Furthermore, since the outer cover member 11 is made of a metal coil spring,
When the wiring cord 1 is used, by grounding the jacket member 11, it is possible to prevent interference caused by external interference.

Furthermore, when this wiring cord 1 is used for wiring a headphone A etc. as shown in FIG.
1 is coiled, it has a novelty compared to conventional cords, and its decorative value is improved.

As explained above, in the wiring cord according to this invention, the outer jacket member is made of a metal coil spring, the reinforcing core wire is flexible, and between the outer jacket member and the reinforcing core wire and the insulated conductor wire,
Since the gap is provided, not only is the wire highly flexible, but also the bending strength is high, so it is possible to prevent the insulated conductive wire from breaking due to bending.

Moreover, the reinforcing core wire can prevent the insulated conductor wire from breaking due to tension.

In addition, since the outer sheath member is made of a metal coil spring and is grounded during use, it is possible to prevent induction interference from the outside.Moreover, since the outer sheath member is coiled, it is compared to conventional cords. It has the effect of improving its decorative value.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a wiring cord according to an embodiment of the invention, FIG. 2 is a plan view of FIG. 1, and FIG. 3 is an explanatory diagram of the use of the wiring cord of FIG. 1. DESCRIPTION OF SYMBOLS 1...Wiring cord, 11...Outer cover member, 12...Reinforcement core wire, 13...Insulated conductor wire, 13-1... Positive electrode side insulated conductor, 13-2・
・・・・・・Negative electrode side insulated conductor.

Claims (1)

[Scope of utility model registration request] A sheathing member made of an elongated metal coil spring and grounded during use, a flexible reinforcing core wire that is loosely passed through the sheathing member to prevent the sheathing member from elongating in the axial direction, and together with this reinforcing core wire, the above-mentioned A wiring cord comprising a plurality of insulated conductive wires loosely passed through an outer jacket member.