Cable middle connector

Abstract

The invention discloses a cable middle connector. Cold contraction sealing casing pipes are arranged among cable conductors, a cold contraction insulating protective pipe is coaxially arranged in a pipe body of each cold contraction sealing casing pipe, a set of installing holes are formed in each cold contraction insulating protective pipe in an opposite mode, a shielding structure layer is arranged in each installing hole, insulators are distributed on the inner wall of the cold contraction insulating protective pipe, a sealing sleeve is sleeved outside the cold contraction sealing casing pipe corresponding to the cold contraction insulating protective pipe, a rubber strip structure layer is arranged outside the sealing sleeve in a defining mode, and a constant force elastic layer is arranged outside the rubber strip structure layer. Through the method, the cable middle connector is simple and compact in structure, good in insulativity, high-temperature-resistant, and alkalinity-acidity-resistant. Due to the fact that a connector main body is made of soft liquid silicone rubber materials, insulating blind angles which are produced through bending of a cable can not be formed when the cable middle connector is used, the cable middle connector is high in elasticity and provides constant lasting radial pressure for a cable body so that the cable middle connector and the cable body just like breathing together, sealing performance and waterproofing performance are good, and long-term reliable operation is kept.

Description

technical field [0001] The invention relates to the field of cables, in particular to a cable intermediate joint. Background technique [0002] Elastic rubber material has "elastic memory" properties, like a spring. Cold shrinking technology is also called pre-expansion technology, that is to use mechanical means to pre-stretch the molded rubber parts within its elastic range, and then insert plastic cores to fix them. When installing, you only need to pull out the wire core, and the elastic rubber body will quickly shrink and tighten to the desired installation position. [0003] The insulation, high temperature resistance, and acid and alkali resistance of the existing cold-shrinkable cable intermediate joint material itself are poor, resulting in poor overall performance of the intermediate joint, excessive thermal expansion and contraction of the electrical connection, poor waterproof sealing performance, and low strength. Low. Contents of the invention [0004] The...

AI Technical Summary

Problems solved by technology

[0003] The insulation, high temperature resistance and acid and alkali resistance of the cold-shrinkable cable intermediate joint material in the prior art are poor, resulting in poor overall performance of the intermediate joint, excessive thermal expansion and contraction of the electrical connection, poor waterproof sealing performance, and relatively high strength. Low

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