Antistatic high-strength electrical shielding data cable

Abstract

The invention discloses an antistatic high-strength electrical shielding data cable comprising eight copper conductor units and an aramid reinforcing member. Each copper conductor unit comprises an aramid fiber which is arranged in the center, an internal conductive layer and an external conductor layer. Four symmetrical insulating wire pairs are twisted on the external surface of the aramid reinforcing member to form a cable core. A second teflon layer longitudinally wraps the external surface of the cable core. The gap between the second teflon layer and the four symmetrical insulating wirepairs is filled with multiple cotton yarns. One cotton fiber wire winds the external surface of the second teflon layer to form a buffer slide layer. The winding direction of the cotton fiber wire isopposite to the twisting direction of the four symmetrical insulating wire pairs. Multiple metal wires are wound on the external surface of the buffer slide layer in parallel to form a metal shieldinglayer. The metal wire external surface of the metal shielding layer is wrapped by a third teflon tape. The data cable is low in friction coefficient and flexible and tension-resistant without frictional static electricity and can still guarantee structural and electrical performance stability after frequent movement.

Description

Technical field [0001] The invention relates to a data cable, in particular to an antistatic high-strength electric shielded data cable. Background technique [0002] The structure of the traditional shielded data cable is composed of 4 groups of symmetrical signal pairs, wrapped with a layer of polyester tape, and then wrapped with a layer of aluminum-plastic composite tape for shielding, and the outer layer is extruded with PVC or other plastic coatings. . The symmetric signal pair is composed of two copper conductors covered with a layer of high-density polyethylene insulated wires. Product performance meets the specification requirements of TIA / EIA568B.2. In order to solve the problem of attenuation of electrical performance and electromagnetic interference at lower frequencies, some products are designed to braid a layer of copper wire shielding on the outer layer of the aluminum-plastic composite tape. For shielded data cables that require movement, the conductors of the...

AI Technical Summary

Problems solved by technology

However, in environments with frequent movements such as robotic arms and relatively harsh environmental conditions, the performance reliability of this type of product cannot meet the requirements. After hundreds of movements, there will be problems such as conductor breakage, increased attenuation, and decreased anti-interference performance.

In the process of moving, there is friction between the insulation, the insulation and the outer tape, and the shield. On the one hand, it is easy to generate static electricity and cause signal interference. At the same time, frequent friction will also cause the mechanical and physical properties of the insulating material to decline.

A general mechanical arm will require more than 100,000 movements. If the influence of the sliding of the cable core structure cannot be solved, the problems of product fatigue resistance and shielding stability cannot be solved, and the signal transmission requirements of the mechanical arm cannot be guaranteed.

At this point, it is difficult for the traditional cable structure to meet the requirements

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