current overload protector

Abstract

The invention provides a current overload protector. The current overload protector comprises a protector body, an automatic triggering and disconnecting device; the protector body comprises a mounting housing, wherein a circuit wiring mechanism and a protection mechanism are mounted in the mounting housing; the circuit wiring mechanism is used for circuit wiring between a power supply, electricalequipment and the protection mechanism; the protection mechanism comprises an overload sensing component used for automatically sensing whether the circuit current is overloaded or not, and a circuitconnecting component used for controlling the circuit circulation between the power supply current and the electrical equipment; the automatic triggering and disconnecting device comprises a limitingmechanism, a triggering mechanism and a resetting mechanism, wherein the limiting mechanism is used for limiting the movement of a conductive plate far away from a conductive sheet b under the actionof the elastic force of a separation spring; the triggering mechanism is used for being triggered by an overload sensing component and enabling the limiting mechanism to withdraw the limitation of the conducting plate; and the resetting mechanism is used for assisting the automatic triggering device to restore to the original shape.

Description

technical field [0001] The invention relates to the field of circuits, in particular to a current overload protector. Background technique [0002] The 21st century is an era of informatization. The rapid development of informatization has made people more and more dependent on electronic equipment and products, and these electronic equipment and products are inseparable from power supplies. The safety of power supplies has become the focus of attention. , in order to ensure the safety of electricity use, people set up a current overload protector in electrical appliances. The traditional current overload protector will cause the bimetal to heat and deform through current overload, and separate the dynamic and static contacts to achieve the purpose of cutting off the power supply circuit. However, the bimetal sheet of this kind of current overload protector usually recovers its deformation within a few seconds and resets the circuit. If it is necessary to detect and repair t...

AI Technical Summary

Problems solved by technology

[0002] The 21st century is an era of informatization. The rapid development of informatization has made people more and more dependent on electronic equipment and products, and these electronic equipment and products are inseparable from power supplies. The safety of power supplies has become the focus of attention. , in order to ensure the safety of electricity use, people set up a current overload protector in electrical appliances. The traditional current overload protector will cause the bimetal to heat and deform through current overload, and separate the dynamic and static contacts to achieve the purpose of cutting off the power supply circuit. However, the bimetal sheet of this kind of current overload protector usually recovers its deformation within a few seconds and resets the circuit. If it is necessary to detect and repair the electrical appliance, the power supply must be cut off first. Cutting off the power supply for maintenance, the rapid reset of the protector will bring a greater safety hazard, or due to the negligence of the maintenance personnel, it will be very dangerous to perform maintenance and testing of electrical appliances without cutting off the power supply. For this reason, the present invention I designed a protector that adopts the thermal expansion automatic circuit breaking method, which can automatically sense whether the circuit current is overloaded and decide whether to cut off the power supply. At the same time, the circuit reset only needs the user to manually press the recovery lever, which greatly increases the safety performance.

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