Powerful-extrusion stable knife switch

Abstract

The invention provides a powerful-extrusion stable knife switch. The switch comprises a shell, a knife holder is designed inside the shell, and a knife is hinged inside the shell at the front end of the knife holder. Block pieces are designed at the two sides of electricity connection pieces used in pairs. Hydraulic cavities are designed below the electricity connection pieces of the knife holder. Vertically extending slide bars between the paired electricity connection pieces are designed in the hydraulic cavities respectively. The bottom ends of the slide bars extend into the hydraulic cavities respectively. The slide bars and the hydraulic cavities are assembled in a sliding seal way. An elastic capsule is clamped between each electricity connection piece and the corresponding block piece, and each elastic capsule is connected into the corresponding hydraulic cavity through a vertical tube. The hydraulic cavities are filled with insulating liquid. When the knife switch is closed, the electricity connection pieces are clamped to the middle, and the electricity connection performance is better. The longer the use time of the switch is, the better the electricity connection performance is. Because of greater clamping force, the knife is not easily opened by touch, and the switch is safer in use.

Description

technical field [0001] The invention belongs to the technical field of low-voltage electrical appliances, and in particular relates to a strong extrusion stable knife switch. Background technique [0002] A switch generally refers to an electronic component that can open a circuit, interrupt the current, or allow it to flow to other circuits. The switch is divided into different types according to the structure and power usage. Among them, the knife switch is also called the knife switch or the isolation switch. It is the simplest and most widely used low-voltage electrical appliance in the hand-controlled electrical appliances. The knife switch is usually wedged (or separated) by the knife and the knife holder seat on the base to connect (or break) the circuit. After the traditional knife switch is used for a long time, its knife holder will become loose, so that the connection between the knife and the knife holder is not tight enough, and it is easy to have a virtual con...

AI Technical Summary

Problems solved by technology

After the traditional knife switch is used for a long time, its knife holder will become loose, which makes the connection between the knife and the knife holder not tight enough, and it is easy to produce a virtual connection, making the circuit output not stable enough

Moreover, the traditional knife holder is not tightly clamped to the switch knife, and it is easy to knock it apart when touching it

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