Resistor with built-in metal-cased temperature fuse

Abstract

The invention discloses a resistor with a built-in metal-cased temperature fuse, comprising a metal case, a connecting case, a temperature fuse, an insulating material, a first pin, a ceramic tube, aretainer ring, a metal conductive cap, a second pin and a resistance wire winding. The connecting case is fixed at one end of the metal case. The temperature fuse is inserted and fixed into the innerwall of the metal case, and the lead at one end of the temperature fuse is fixedly connected with the inner wall of the connecting case. One end of the inner wall of the metal case away from the connecting case is filled with the insulating material. The lead at one end of the temperature fuse away from the connecting case is fixed with the first pin after passing through the insulating material.The outer sleeve of the metal case is fixed with the ceramic tube which is a cylindrical tube. The ceramic tube is sealed at one end near the connecting case. The retainer ring is fixed at one end ofthe outer side of the metal case away from the connecting case. The resistor with a built-in metal-cased temperature fuse has a simple structure, can prevent the temperature fuse and the ceramic tubefrom falling off, has good stability, and is small and easy to use.

Description

technical field [0001] The invention relates to the technical field of resistors, in particular to a resistor with a built-in metal casing temperature fuse. Background technique [0002] Fuse resistance devices are mainly used in electrical and electronic product equipment and their components. , so that the fuse line is first fused to cut off the current to reach the protection circuit! [0003] In the prior art, the structure of the thermal fuse and the resistor is mainly composed of ceramic materials, and the thermal fuse is fixed on the porcelain tube. Since ceramics are fragile and vulnerable parts, when external contact and collision occur, the thermal fuse and the ceramic tube of the resistor are easy to fall off. , usually the thermal fuse is set on the porcelain tube, and it is necessary to provide a protective layer for the thermal fuse and a conductive tube on the porcelain tube, which has a complex structure and poor stability; [0004] Moreover, the existing f...

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Problems solved by technology

[0003] In the prior art, the structure of the thermal fuse and the resistor is mainly composed of ceramic materials, and the thermal fuse is fixed on the porcelain tube. Since ceramics are fragile and vulnerable parts, when external contact and collision occur, the thermal fuse and the ceramic tube of the resistor are easy to fall off. , usually the thermal fuse is set on the porcelain tube, and it is necessary to provide a protective layer for the thermal fuse and a conductive tube on the porcelain tube, which has a complex structure and poor stability;

[0004] And existing fuse resistors are bulky

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