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Repeatable fuse for preventing over-current

An overcurrent and self-recovery technology, applied in circuits, relays, electric switches, etc., can solve problems such as circuit overheating of electrical and electronic products, electrical and electronic product fires, failures, etc., to minimize circuit overheating, fires or failures Effect

Inactive Publication Date: 2014-09-03
MS TECHVISION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the case of unstable current or voltage, if the self-resetting fuse repeats the process of blocking the power supply and automatically releasing the power supply blocking state in a state where the circuit, etc. Abnormalities in the fuse itself, or abnormalities such as overheating of the circuits of electrical and electronic products, ultimately lead to fires or failures of electrical and electronic products.

Method used

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  • Repeatable fuse for preventing over-current
  • Repeatable fuse for preventing over-current
  • Repeatable fuse for preventing over-current

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Embodiment Construction

[0054] Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings. However, the following embodiments are only provided for those with ordinary knowledge in the technical field to fully understand the present invention, which can be modified into other forms, and the scope of the present invention is not limited to the following embodiments. In the drawings, the same symbols refer to the same constituent elements.

[0055] figure 1 and figure 2 It is a diagram showing a resettable fuse according to an example of the present invention, image 3 and Figure 4 is a diagram showing a positive temperature coefficient thermistor (positive temperature coefficient thermistor) according to an example, Figure 5 and Figure 6 is a diagram showing a resettable fuse according to another example of the present invention, Figure 7 is a diagram showing a positive temperature coefficient thermistor (pos...

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Abstract

A repetitive fuse having an overcurrent preventing function is provided to prevent failure in electronic and electrical products due to overcurrent or overheating by continuously limiting the flow of a current through the increase in electric resistance. A first lead terminal(110) is arranged on one side of a housing(100) having an inner space. A second lead terminal(120) is arranged on the other side of the housing. A spindle(130) is electrically connected or disconnected to the first lead terminal. The spindle is electrically connected to the second lead terminal. A main spring(140) and a bias spring(150) electrically connect or disconnect the first lead terminal and the spindle. A static characteristic thermistor(160) is installed on one side of the housing. The static characteristic thermistor is connected to the first lead terminal and the housing.

Description

technical field [0001] The present invention relates to a self-resetting fuse with a positive temperature coefficient thermistor (positive temperature coefficient thermistor), in particular to a self-resetting fuse with an overcurrent blocking function. When the overcurrent causes the positive temperature coefficient thermistor to self-heat (self-heating) and rise above a certain critical temperature, the resistance increases sharply and continues to limit the flow of current, so that the power supply can be continuously blocked, and if the overcurrent disappears , the current flow returns to normal as the PTC thermistor cools. Background technique [0002] Generally, all electrical and electronic products that use electricity always contain the possibility of accidents caused by abnormal overcurrent in the circuit or overheating caused by external overheating reasons. Conventionally, in order to prevent this, a disposable fuse made of a material that is melted and cut by h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H85/36H01H37/46
CPCH01H85/36H01H37/46H01H37/323H01H2061/0115
Inventor 金德熙朴夏荣
Owner MS TECHVISION
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