Cable television cable connection device

Abstract

A cable television cable connection device belongs to the television signal transmission part technology field. The cable television cable connection device comprises a metal sheet. A near middle part of the metal sheet forms a tubular body. A first gap way is formed at a length direction of the tubular body. One end of the tubular body is extended so as to form a group of card line pieces whose middle parts tends to clamp and the two ends form a bell mouth. The adjacent card line pieces form a card slot. A guiding ring is formed at a tail end of the card line piece. A second gap way is formed at the length direction of the guiding ring. The other end of the tubular body is extended so as to form a stricture tubular body or fixedly connect with a round copper bar. A guiding cable core possesses a good positioning effect. The card line pieces possess a good elastic recovery function. Connection is convenient, rapid and firm. Active equipment can be guaranteed to provide power normally in a network so that a downstream cable television user can watch television. Intrusion of noise and interference can be avoided. A link index of an HFC network can be guaranteed so that the HFC network can operate stably and reliably.

Description

technical field [0001] The invention belongs to the technical field of television signal transmission components, and in particular relates to a cable connection device for cable television. Background technique [0002] Cable television, also known as cable television (English name: Cable Television; abbreviated as CATV), has been developed for decades. With the development of technology and the continuous improvement of network transmission technology, digitization, optical fiber and two-way transmission technology It is gradually integrated into the cable TV network, so that the function of the transmission network is continuously expanded, and the technical requirements for the transmission network are increasingly stringent. As a broadband access network, HFC network (broadband network) has extremely wide transmission frequency band, rich frequency resources, convenient access means and relatively low technical transformation costs, etc., so it increasingly shows its un...

AI Technical Summary

Problems solved by technology

[0007] However, the aforementioned CN101604793B still has the following disadvantages: one is that although the end of the metal sheet beyond the cylindrical copper rod is in a spindle-shaped structure, the clamping effect is somewhat affected. However, after even a limited number of plugging and unplugging, the metal sheet will experience fatigue (lose elasticity), making it difficult or even impossible to exert the initial connection effect; second, once the spindle-shaped gripper is fatigued during use, Then it will lead to poor contact of the cable core or even hanging in the air. When there is current passing through, it is easy to generate sparks, so that the contact surface between the cable core and the connecting device will form spark black spots, and then generate oscillating current, causing noise and interference, link signal The noise ratio is reduced, resulting in mosaic, static amplitude and / or signal interruption in the downlink cable TV, while the uplink data transmission rate is reduced and the signal is interrupted; the third is that once the cable core is in poor contact or suspended, it will cause active in the HFC network. The power supply of the device is abnormal or even unable to work normally, which affects the normal viewing of all cable TV users under the device, and the impact is large.

Images