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Fuse

A technology of fuses and insulating porcelain sleeves, which is applied in the field of circuit protection devices, can solve problems such as the failure of fuses to meet standards, limit the development of fuses, and fail to meet the requirements for three times of use, and achieve the effect of improving the effect of arc extinguishing

Pending Publication Date: 2021-05-07
BEIJING DINGYI TONGYUAN SCI & TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The fuses on the market cannot meet the standard when the arc is extinguished, and the general arc extinguishing times cannot meet the three use requirements. Therefore, the development of fuses is limited.

Method used

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Embodiment Construction

[0022] The principles and features of the present invention are described below, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0023] Such as figure 1 , figure 2 As shown, the present invention proposes a fuse, including an insulating porcelain sleeve 1, the upper end of the insulating porcelain sleeve 1 is connected with an upper terminal block 2, and the lower end is connected with a lower terminal base 3; the inner upper end of the insulating ceramic sleeve 1 is provided with The upper static contact body 4, the upper static contact body 4 is electrically connected with the upper terminal block 2, the upper static contact body 4 includes a contact spring, a contact cover covering the contact spring and a connecting stud 42, the The connecting stud 42 protrudes from the through hole at the top of the insulating porcelain sleeve 1 , and is electrically connected with the terminal of...

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Abstract

The invention relates to a fuse, and the fuse comprises an insulating porcelain bushing; the upper end of the insulating porcelain bushing is connected with an upper wire holder, and the lower end of the insulating porcelain bushing is connected with a lower wire holder; an upper static contact body is arranged at the upper end in the insulating porcelain bushing, and a lower static contact body is arranged at the lower end in the insulating porcelain bushing; an arc extinguishing tube is installed between the upper static contact body and the lower static contact body, a rubber base is installed at the bottom end of the insulating porcelain bushing, an upper insulating cylinder is installed on the periphery of the upper static contact body, and an isolation barrel is arranged outside the upper insulating cylinder. According to the fuse provided by the invention, the isolation barrel is arranged on the periphery of the upper insulating cylinder, air in a gap is blocked, the arc extinguishing effect is well improved, and a solid foundation is laid for development of the fuse.

Description

technical field [0001] The invention relates to the technical field of circuit protection devices, in particular to fuses. Background technique [0002] A fuse is an electrical appliance that fuses the fuse with the heat generated by itself and disconnects the circuit when the current exceeds the specified value. Therefore, it is widely used in high and low voltage power distribution systems, control systems and electrical equipment, as a short circuit and overcurrent protector, and is one of the most commonly used protection devices. [0003] The fuses on the market do not meet the standard when the arc is extinguished, and the general arc extinguishing times do not meet the three use requirements. Therefore, the development of fuses is limited. Contents of the invention [0004] In order to solve the above problems, the present invention proposes a fuse. [0005] The technical solution of the present invention to solve the above technical problems is as follows: the fu...

Claims

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Application Information

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IPC IPC(8): H01H85/38H01H85/143H01H85/00
CPCH01H85/0078H01H85/143H01H85/38
Inventor 尹玉霞唐国初
Owner BEIJING DINGYI TONGYUAN SCI & TECH DEV CO LTD
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