Circuit overload protection and automatic reset device

An overload protection and automatic reset technology, which is applied to emergency protection devices, circuits, protection switch operation/release mechanisms, etc., can solve the problems of cumbersome operation and the need to replace fuses, etc., and achieve the effect of simple operation and safe protection of circuits

CN110752126AInactive Publication Date: 2020-02-04彭博
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2020-02-04
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to the technical field of circuit protection, and discloses a circuit overload protection and automatic reset device. The right side of a piston is provided with a temperature sensing block, the inner bottom wall of an inner shell is provided with a spring, the inner shell is internally provided with a fixing plate and a connecting plate, the left side of the fixing plate isprovided with a fixing wheel, the right side of a first supporting rod is provided with a first contact point, the inner top wall of the inner shell is provided with a fixing rod and a second supporting rod, the bottom of the fixing rod is provided with a rotating shaft, the left side of the second supporting rod is provided with a second contact point, and a fuse is arranged between the second contact point and the first contact point. When the circuit is overloaded, the piston pushes the temperature sensing block to move, the temperature sensing block pushes the lower section of a movable plate to move rightwards through the connecting rod, the upper section of the movable plate is driven to move upwards, the left side of the fuse moves downwards, and the circuit forms an open circuit. When the temperature returns to be normal, the piston moves leftwards, the temperature sensing block drives the movable plate to move leftwards through the connecting rod, the movable plate drives thebump to move downwards, the fuse resets, and the circuit forms closed circuit.
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Description

technical field

[0001] The invention relates to the technical field of circuit protection, in particular to a circuit overload protection and automatic reset device. Background technique

[0002] With the rapid development of the times, people use electrical appliances and electronic products more and more commonly, and these electrical appliances and electronic products are inseparable from the power supply, which makes people pay more attention to the safety of power supply. The overload current protection device is installed in the circuit. Generally, the overload protection device of the line uses a fuse. When the current in the line exceeds the rated current, the fuse will automatically fuse to protect the safety of the line. However, the fuse needs to be replaced with a new one after the fuse is blown to continue The work and operation are cumbersome and waste materials. Therefore, we propose a circuit overload protection and automatic reset device. Contents of the i...

Examples

Embodiment Construction

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0024] see Figure 1-4 , a circuit overload protection and automatic reset device, comprising an outer shell 1, the right inner wall of the outer shell 1 is fixedly connected with an inner shell 22, and the left side of the inner shell 22 is provided with a through hole 2, and hot air enters the temperature sensing box 3 through the through hole 2 , the inner left wall of the inner shell 22 is fixedly connected with a temperature-sensing box 3, the interior of...