Stable-typed fusible safe resistor and production method thereof

Abstract

The invention discloses a stable-typed fusible safe resistor and a production method thereof. The resistor comprises an electrical porcelain stick body and a cap body that is arranged at the two ends of the electrical porcelain stick body and connected with a lead. The middle part of the electrical porcelain stick body is sprayed with a paint layer, and an alloy wire is wound on the outer surface of the paint layer at equal intervals. The production method of the resistor is as follows: the cap body is sheathed and arranged at the two ends of the electrical porcelain stick body that the content of alumina is below 75%, and the lead is welded on the cap body; the electrical porcelain stick body is coated with a paint layer; the alloy wire is wound at equal intervals at the part comprising the paint layer; the outer surface is painted and marked with color rings and braids according to resistances. In the invention, once strong power voltage or current appears, the middle part of the electrical porcelain stick can heat intensively; therefore, the alloy wire is fused rapidly to cut off a circuit so as to protect the circuit. The resistor is mainly used in the main circuits of various appliances, such as chargers, meters, etc.

Description

technical field [0001] The invention relates to a component, in particular to a stable fusible fuse resistor and a preparation method of the resistor. Background technique [0002] At present, the fusible metal wire wound safety resistor produced in the prior art is that the alloy wire is directly wound on the electric porcelain rod (such as figure 1 As shown), there is no special regulation on the winding distance and winding length of the alloy wire, as long as the uniform winding reaches the specified resistance value, such as the fusible fuse resistor in the mobile phone charger, the fusible wire wound fuse resistor produced in this way The device can be fused when encountering strong voltage and current, but its performance is unstable, because the alloy wire is evenly wound on the entire electric porcelain rod, which will disperse heat and is not easy to fuse. The fuse time prevents the resistor from being fused rapidly within the specified time, and the harm it bring...

AI Technical Summary

Problems solved by technology

[0002] At present, the fusible metal wire wound safety resistor produced in the prior art is that the alloy wire is directly wound on the electric porcelain rod (such as figure 1 As shown), there is no special regulation on the winding distance and winding length of the alloy wire, as long as the uniform winding reaches the specified resistance value, such as the fusible fuse resistor in the mobile phone charger, the fusible wire wound fuse resistor produced in this way The device can be fused when encountering strong voltage and current, but its performance is unstable, because the alloy wire is evenly wound on the entire electric porcelain rod, which will disperse heat and is not easy to fuse. Fusing time, so that the resistor cannot be quickly fused within the specified time, and the harm it brings is the risk of burning out the associated equipment and causing a fire

Images