Self-recovery DC fuse

A fuse and self-recovery technology, which is applied to the parts of the protection switch, electrical components, protection switch operation/release mechanism, etc., can solve the problems of manual restoration of power, reduce human operation, ensure circuit load, and avoid safety. hidden effect

Inactive Publication Date: 2020-05-12
吴妍佩
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the troublesome problem in the pri

Method used

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  • Self-recovery DC fuse
  • Self-recovery DC fuse
  • Self-recovery DC fuse

Examples

Experimental program
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Effect test

Embodiment

[0018] refer to Figure 1-2 , a self-resetting DC fuse, including a housing 1, the inner wall of the housing 1 is fixed with a load resistor 2, a first power board 3 and a second power board 4, the first power board 3 and the second power board 4 There is a heating rod 5 in common, the load resistance 2 and the second power connection plate 4 are connected to the external circuit through wires, the bottom of the shell 1 is fixed with a fixed block 6, and the inside of the fixed block 6 is provided with a movable cavity 7, and the movable cavity 7 The inner bottom is fixed with a spring 8, and the upper end of the spring 8 is fixed with a push plate 9 that is sealed and slidably connected with the inner wall of the movable chamber 7. The heat conduction column 11 is fixed to be sealed and slidingly connected with the inner wall of the heat sink 10, and the inside of the fixed block 6 is provided with a ring-shaped heating cavity 12, which is filled with methylene chloride solut...

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PUM

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Abstract

The invention discloses a self-recovery DC fuse. The fuse comprises a housing, and a load resistor, a first power connection plate and a second power connection plate are fixed to the inner wall of the shell. The first power connection plate and the second power connection plate jointly abut against a heating rod, and a fixed block is fixed to the bottom of the shell; a movable cavity is formed inthe fixed block, and a spring is fixed to the inner bottom of the movable cavity, wherein a push plate connected with the inner wall of the movable cavity in a sealed and sliding mode is fixed to theupper end of the spring. The fuse has the advantages that when an overall circuit is overloaded, a current in the circuit is increased sharply, so the heating value of the heating rod is increased, and the dichloromethane solution in the heated cavity is heated and evaporated; under the obstruction of the interception plate, the electric energy is accumulated in the heated cavity and finally enters the movable cavity in a spraying mode, so the push plate drives the heating rod to move, the heating rod is separated from the first power connection plate and the second power connection plate, the whole circuit is disconnected, and the damage of overload current to an electric appliance and the circuit is avoided.

Description

technical field [0001] The invention relates to the technical field of fuses, in particular to a self-restoring DC fuse. Background technique [0002] Fuse refers to an electrical appliance that fuses the melt and disconnects the circuit with the heat generated by itself when the current exceeds the specified value; device. [0003] The current fuses mainly include disposable fuses and resettable fuses; once the current disposable fuses are blown, they need to be replaced as a whole, which is very inconvenient, and artificial replacement is very inconvenient, and there are certain safety hazards; The main form of the resettable fuse is a bimetallic strip thermal relay, and its on-off parts are composed of bimetallic strips with different thermal deformation coefficients. When the current is too large and the temperature of the bimetallic strip is too high, the bimetallic strip is deformed due to deformation Disconnect the contact and connect it after cooling down; however,...

Claims

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Application Information

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IPC IPC(8): H01H87/00H01H71/24H01H71/32H01H71/02
CPCH01H71/02H01H71/24H01H71/32H01H87/00
Inventor 吴妍佩秦帅
Owner 吴妍佩
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