A pressure-adjusting type fuse
A fuse and voltage regulating technology, which is applied in the direction of electrical components, electric switches, circuits, etc., can solve the problems of low service life and unreusable fuses, and achieve the effect of high service life, simple structure and guaranteed reusability
Pending Publication Date: 2018-12-07
李涵
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Problems solved by technology
[0004] In order to make up for the shortcomings of the existing technology and solve the problem that the fuse cannot be reused and the service life is low, the invention provides a technical solution to solve this problem
Method used
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Embodiment approach
[0019] As an embodiment of the present invention, the stretching mechanism 6 includes a spring 61 and a guide rod 62; the guide rod 62 is installed between the left cover plate 1 and the right cover plate 10, and there is an air path on the guide rod 62, The airbag 3 can be connected to cool down the telescopic mechanism 5; the spring 61 is set on the guide rod 62, and is located between the stopper 4 and the right cover 10, and the stretching distance of the spring 61 is greater than that of the telescopic mechanism without the influence of the adsorption mechanism 7. The maximum stroke of the mechanism 5 can disconnect the telescopic mechanism 5 from the connection block 8 to form an open circuit and achieve circuit protection.
[0020] As an embodiment of the present invention, the telescopic mechanism 5 includes a mercury cylinder 51, a pure copper fuse 52 and an electrical contact 53; the electrical contact 53 is connected to the mercury cylinder 51 and is at the same leve...
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The invention relates to the field of electric appliance insurance, and more specifically relates to a pressure-adjusting type fuse. During normal energization, under the action of an adsorption mechanism, a telescopic mechanism is in contact with a connecting block, and a closed circuit forms. When short-circuit occurs, the temperature rises and the telescopic mechanism protrudes, so that the adsorption mechanism is disconnected, and a stretching mechanism is fully extended to disconnect the connecting block from the telescopic mechanism. The circuit is disconnected to form an open circuit torealize a protection effect. At the same time, the stretching mechanism extends to squeeze a stopper, and the stopper is pressed against an airbag so as to produce gas. The gas is discharged throughthe stretching mechanism. Thus the telescopic mechanism cools down so as to prolong the service life of the fuse. According to the invention, the service life of the fuse can be prolonged; the structure is simple; the cost is low; components are simple and easy to replace; and the long-term usage of the fuse can be ensured.
Description
technical field [0001] The invention relates to the field of electric appliance insurance, in particular to a voltage regulating fuse. Background technique [0002] Fuses are protective devices widely used in the electrical field. Fuses with different parameter configurations can be used for the protection of electric (strong current) equipment and electronic (weak current) equipment. No matter what kind of fuse, its basic structure includes: base, metal connector, metal contact, and melt. Among them, the melt is the main working part of the whole fuse. The melt is a special wire connected in series in the circuit. Compared with other wires in the circuit, the melt part has a smaller cross-sectional area and poor heat dissipation environment. When the circuit is short-circuited or overloaded, the current increases. The heating at the melt position is significantly greater than that of other wires. Therefore, due to the heat collection effect, the melt melts and breaks firs...
Claims
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Patent Timeline
Login to View More IPC IPC(8): H01H85/00H01H29/30
CPCH01H85/0043H01H29/30H01H85/0056
Inventor 李涵
Owner 李涵