Explosion-proof fuse and method for manufacturing same

Abstract

The invention discloses an explosion-proof fuse and a method for manufacturing the same. The explosion-proof fuse comprises a shell, a tube, a fuse wire and pins, wherein clamping holes are formed in two ends of the shell; the fuse wire is arranged in the tube; the pins are respectively connected to two ends of the fuse wire and fixedly clamped in the clamping holes; an opening is formed in the sidewall of the shell; and the tube is clamped in the shell. The pins and the fuse wire are combined in a resistance welding or laser welding mode and arranged in the shell which is made of a plastic material, and the fuse wire is arranged in the tube, so that a soldering process is eliminated, the explosion-proof fuse meets a requirement of environment friendliness, and is high in production efficiency and stable in performance, and the tube cannot be burst and spattered when a circuit is short-circuited. By adoption of the method for manufacturing the explosion-proof fuse, the fuse wire and the pins are directly lapped, so that welding middle processes are eliminated, the flow is simple, and the cost is reduced.

Description

technical field [0001] The invention relates to a line protection device in electric and electronic equipment, in particular to an explosion-proof fuse and a manufacturing method thereof. Background technique [0002] Traditional fuses are generally used in electronic products. When the current passing through the fuse is too large, the fuse will be blown to avoid dangers such as overheating and ignition of the circuit. The purpose is to protect people and equipment from injury or even fire due to overcurrent. Furthermore, as electrical equipment is thinner and smaller, its functions are becoming more and more complex, more and more parts are required, and the circuits and electronic components on the circuit board are becoming more and more dense, so the circuits on the circuit board tend to be miniaturized. The miniaturization of components is already a common method, which can make the parts of the circuit board denser and allow more functions to be placed on the same are...

AI Technical Summary

Problems solved by technology

[0005] At the same time, in general electronic circuits, the parts are placed on one side of the circuit board, and the fuse pins are welded on the other side of the circuit board. Due to the normal appearance, it is not easy to detect the tiny peeling of the internal fuse and the pin, which will generate local high temperature and cause secondary welding, so that the current greater than the normal rated maximum use current will pass, making it impossible to determine the normal rated maximum use current, so that expensive equipment is damaged, burned, injured or dangerous accidents occur, so the protection is not complete and cannot meet the needs of the market

Images