An Outdoor Enclosed Jet Fuse

Abstract

An outdoor enclosed spray fuse, comprising a fuse casing and a fuse injection mechanism arranged in the inner cavity of the fuse casing, the fuse casing is integrally connected by a silicone rubber sleeve and a resin liner molded close to the inner wall of the silicone rubber sleeve One end of the silicone rubber sleeve and the resin bushing is the cable inlet, the other end is the opening end for loading or taking out the fuse injection mechanism, and the side wall of the silicone rubber sleeve and the resin bushing near the bottom is provided with a through cavity The cable outlet, the cable inlet and the cable outlet are respectively sealed and filled with an incoming conductive column and an outgoing conductive column; the fuse injection mechanism includes a fuse mechanism and an injection mechanism for assembling the fuse mechanism, and the injection mechanism is composed of a guide injection unit and a positioning guide The fusing mechanism includes a movable contact finger slidably arranged in a blind hole and a fuse element connected to the end of the movable contact finger. The fuse of the present invention has novel structure, simplified parts, easy assembly and reliable use. , The protection is reasonable.

Description

technical field [0001] The invention relates to the technical field of fuses, in particular to an outdoor enclosed spray fuse. Background technique [0002] Fuse is the simplest protective device, which is used to protect electrical equipment from overload and short-circuit current damage; choose different types of high-voltage fuses according to installation conditions and uses, such as outdoor drop type, indoor type, and high-voltage fuses for some special equipment The fuse should be selected as a special series; the fuse we often say is the fuse type. Its structure generally includes a fuse tube, a contact conductive part, a supporting insulator and a base, and the fuse tube is filled with fine quartz sand for arc extinguishing. The fuse is a metal wire or sheet made of a metal material with a low melting point, which is connected in series in the circuit to be protected. When the circuit or equipment in the circuit is overloaded or fails, the fuse will heat up and melt...

AI Technical Summary

Problems solved by technology

The processing and assembly of this traditional fuse involves a lot of small parts, and the mold opening and processing of each part are very cumbersome, and the assembly between the parts is also cumbersome, resulting in overall fusing The production efficiency of the fuse is severely restricted; in addition, this type of fuse relies on the connecting stud at the end to conduct current, the stud has a limited conduction area, and the current carrying capacity is extremely limited. It is used in high-voltage and high-current circuits; and in actual use of this type of traditional fuse, there will often be slow separation between the static contact and the contact seat, resulting in high-voltage arc breakdown in the fuse. Explosion phenomenon, there is an extremely serious safety hazard

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