JPS5840493Y2 - multi-core cable - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to improvement of multi-core cables such as communication cables.

In a communication cable, as shown in Fig. 1, a presser wrap 3, a shield 4, and a plastic sheath 5 are sequentially wrapped around the outer periphery of a cable core 2, which is formed by forming a plurality of insulated core wires 1 to have a nearly circular cross section. A structure in which a grounding wire 6 is provided along the inner periphery of the shielding body 4 is conventionally known.

In such a configuration, a metal braid, metal tape, metal chemical paper, or the like is used as the shield 4, and a bare wire such as a tin-plated annealed copper wire is used as the grounding wire 6 to break electrical continuity with the shield 4. It is common that

By the way, in recent years, in order to streamline the work in connecting the terminals of multi-core cables such as communication cables, as shown in FIG. 12, the conductor 7 of the insulated core wire 1 is housed in the U-groove 13 of the contact 10, and the connection is made.

In this case, in the conventional cable, the connection work of the insulated core wire 1 is streamlined, but since the ground wire 6 is a bare wire, the insulated core wire 1
This needs to be done separately from the connection work, and further streamlining is desired.

The present invention has been made based on the above, and provides a multi-core cable that can further streamline the terminal connection work.

That is, the present invention is constructed by attaching a grounding wire coated with conductive plastic to the outer periphery of a metal conductor so as to be in contact with the outer periphery of the shield, which is the outer periphery of the cable core made of insulated core wire, and the inner periphery of the shield. It is characterized by this.

FIG. 3 shows an embodiment of the present invention, and the same reference numerals as those in FIG. 1 are given the same reference numerals.

Reference numeral 36 denotes a grounding wire, which is constructed by applying a conductive plastic 9 made of polyethylene or polyvinyl chloride mixed with carbon black to the outer periphery of a metal conductor 8 such as an annealed copper wire.

With this configuration, the electrical connection between the grounding wire 36 and the shield 4 is sufficiently maintained, and when connecting the terminals, the grounding wire 36 is connected to the lower housing 1 of the connector in the same way as the insulated core wire 1.
2 can be connected side by side, further streamlining the terminal connection work.

Note that if the outer diameter of the conductor 8 of the grounding wire 36 and the overall outer diameter of the grounding wire 36 are made equal to the outer diameter of the conductor 7 of the insulated core wire 1 and the overall outer diameter of the insulated core wire 1, the structure of the connector can be improved. There is no need to change.

As explained above, according to the present invention, the terminal connection work of the insulated core wire and the ground wire can be performed using the same connector, which further streamlines the work.

Furthermore, in the present invention, the ground wire can be brought into complete contact with the periphery of the shield body during the winding operation of the shield body, and an excellent shielding effect can be exhibited.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of a conventional example, FIG. 2 is an explanatory diagram of an example of the terminal connection work of a multi-core cable, and FIG. 3 is an explanatory diagram of an embodiment of the present invention. 1; Insulated core wire, 2; Cable core, 4; Shielding body, 6゜3
6; ground wire; 8; metal conductor; 9; conductive plastic.

Claims (1)

[Scope of utility model registration request] A shield is provided on the outer periphery of a cable core formed by molding a plurality of insulated core wires so that the cross section is approximately circular, and a shield is provided on the outer periphery of the cable core and on the inner periphery of the shield. A multi-core cable characterized in that a grounding wire coated with conductive plastic is attached to the outer periphery of a metal conductor so as to be in contact with the metal conductor.