JPS59165311A - Multicore shield cable - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] B) Industrial application fields This invention relates to a multicore shielded cable.

(B) Prior Art The structure of a conventional multi-core shielded cable is to bundle a plurality of core wires insulated with an insulator such as vinyl chloride (hereinafter referred to as the outer sheath), and then cover the core wires with a metal layer such as aluminum. It was then wrapped with rubber, then an insulating material such as cabtyre rubber was layered on top and pressure molded. A conductor such as a braided wire is inserted between the battings, and the braided wire is used as a ground wire.

Therefore, due to the structure of conventional multi-conductor shielded cables, when the cable is bent spirally or extremely bent, for example, as in a telephone line, the metal foil is cut in the middle, and as a result, the metal foil is cut at the cut point. The disadvantage was that the shielding effect was lost at the tip. To solve this problem, there is a method of wrapping each core wire with metal foil, but this method increases the diameter of the entire multicore shielded cable.

(C) ``Purpose This invention reduces the overall wire diameter of the cable by applying a conductor to the outer sheath of the core wire using vacuum coating means instead of using metal foil, and also loses its shielding effect even when the cable is extremely bent. None) The purpose is to provide multi-core shielded cables.

(D) Structure The multicore shielded cable according to the present invention has a metal film coated on the outer sheath of the core wire in the cable by vacuum coating means, a conductor different from the core wires is sandwiched between the core wires, and the core wires are insulated. It is characterized by being covered with something.

(E) Embodiment FIG. 1 is a sectional view showing an embodiment of a multicore shielded cable according to the present invention. In the figure, seven core wires 1 are shown, and on the outside of the core wires 1 there is an outer sheath 2 made of an insulating material such as vinyl chloride. A metal film 3 such as cold-furnace aluminum is deposited.

4 is a braided wire, and this braided wire 4 is sandwiched between the gaps between the plurality of core wires 1. Further, 5 covers the entire core wire 1 and the braided wire 4 with an insulating material such as cabtyre rubber.

Therefore, conventional cable manufacturing techniques can be applied to coat the cabtyre rubber.

(F) Effect The multi-core shielded cable according to the present invention has a metal film coated on the outer sheath of the core wire by vacuum coating means and the core wire is covered with an insulating material, so it is desirable to shield each of the core wires independently. In such cases, the wire diameter of the entire cable can be made significantly smaller than that of the previous model. . In addition, even if the cable is bent to an extreme degree, the core wire is covered with a metal film, so unlike conventional multi-core shielded cables, there is no need to cut the cable mid-way, and the cable remains completely sealed.
I can make a temple.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing an embodiment of a multi-core shielded cable according to the present invention. 1...Core wire, 2...Outer cover, 3...Metal i Aoi, 4...
... Braided wire, 5... Cabtire rubber. Patent Applicant: ROHM Co., Ltd. Agent, Patent Attorney, Takaharu Daikyo

Claims (1)

[Claims] (1) A multi-layer cable characterized in that a metal film is coated on the outer sheath of the core wire in the cable by vacuum coating means, a conductor different from the core wire is sandwiched between the core wires, and the core wire is covered with an insulating material. Core shielded cable.