Novel fuse

Abstract

The invention discloses a novel fuse, which comprises a base. The left upper end of the base is provided with a fixed wing sheet and the lower end is provided with a clamp seat; a mounting notch is formed between the fixed wing sheet and the base; a movable wing sheet and a linkage element are arranged in the clamp seat; a positioning cavity for mounting of a guide rail is arranged between the fixed wing sheet and the movable wing sheet; the front end of the movable wing sheet is an abutting portion matched with the mounting notch, the rear end is a moving portion, and the left side is provided with a positioning clamp groove; the moving portion has a claw-type structure; the left side of the linkage element is provided with the guide rail, a guide groove is arranged at the portion opposite to the guide rail, the guide rail is matched with the guide groove, and the front portion of the linkage element also has a claw-type structure. The novel fuse has the advantages that the structureis simple; the design is reasonable; the mounting is convenient; the service life is long; the original fixing method of adopting a reset spring and using elasticity for energy storage is cancelled; and the problem of decreased fixing effects caused by elastic fatigue of the reset spring is solved.

Description

technical field [0001] The invention relates to the technical field of low-voltage electrical components, in particular to a novel fuse. Background technique [0002] Fuse refers to an electrical appliance that fuses the fuse with the heat generated by itself and disconnects the circuit when the current exceeds the specified value. The fuse is based on the fact that after the current exceeds the specified value for a period of time, the heat generated by itself melts the melt, thereby disconnecting the circuit; a current protector made by using this principle. Fuses are widely used in high and low voltage power distribution systems and control systems, as well as electrical equipment. As short circuit and overcurrent protectors, fuses are one of the most commonly used protection devices. [0003] Fuses are commonly used spare parts in the electrical field, and are often installed in electrical cabinets. In the prior art, the installation and fixing method between the fuse a...

AI Technical Summary

Problems solved by technology

[0003] Fuses are commonly used spare parts in the electrical field, and are often installed in electrical cabinets. In the prior art, the installation and fixing method between the fuse and the electrical cabinet usually adopts the installation method of guide rails. There are clips on the base of the fuse. Connecting block, there is a return spring between the clamping block and the fuse base. When the fuse is installed in the guide rail, the clamping block is squeezed to make the return spring elastically deformed. After the fuse enters the guide rail, the clamp is released. When the block is connected, the return spring will press the block on the guide rail to achieve fixation. However, in order to ensure the degree of fixation during installation, the elastic performance of the return spring will be better, which leads to more effort to squeeze the block. , it is not easy to squeeze the clamping block during installation, and the return spring is prone to elastic fatigue, which affects the long-term installation and use of the product, so there is still room for improvement

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