Switch

Abstract

The invention provides a switch comprising an insulation base, a longitudinal knife switch and a static contact, wherein one end of the longitudinal knife switch is hinged in the middle of the insulation base, and the other end is provided with an operation handle; and the static contact is arranged at one end of the longitudinal knife switch and is fixed on the insulation base. The switch also comprises a transverse knife switch, wherein one end of the transverse knife switch is hinged on the edge of the insulation base, and the other end thereof is provided with a handle; the knife face of the transverse knife switch can right cover the static contact and the longitudinal knife switch; the knife face of the transverse knife switch is insulted; and the knife face of the transverse knife switch is provided with a connecting key for pushing tightly against the longitudinal knife switch and the static contact. Through the mode of cooperation of the longitudinal knife switch and the transverse knife switch, dual control of the knife switches is realized, thereby preventing the case of tripping of the longitudinal knife switch due to gravity of itself in the long-term using process; and the closing limit component for the longitudinal knife switch is added, thereby ensuring stability of the longitudinal knife switch after being closed.

Description

technical field [0001] The invention belongs to the field of electrical equipment, in particular to a switch. Background technique [0002] The knife switch is a switch with a moving contact-knife, which is wedged or separated from the static contact-knife holder on the base to make or break the circuit. Knife switches are widely used and are often used to: isolate power supply to ensure the safety of circuit and equipment maintenance; or as a breaking load for infrequently connecting and breaking loads below the rated current Large low-voltage circuits or directly start small-capacity motors. [0003] During use, due to the gravity of the knife switch after closing, the knife will slowly come out of the static contact after a long time, causing a power outage, especially for a pipelined power supply system. The switch will cause production interruption, and even cause damage to the production equipment. Therefore, a switch that prevents the switch from falling is needed. ...

AI Technical Summary

Problems solved by technology

[0003] During use, due to the gravity of the knife switch after closing, the knife will slowly come out of the static contact after a long time, causing a power outage, especially for a pipelined power supply system. The gate will cause production interruption and even cause damage to the production equipment. Therefore, a knife switch that prevents the gate from falling is needed

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