Rocker type fire preventing switch

Abstract

The invention discloses a rocker type fire preventing switch which comprises a shell, a rocker, a fixed contact point, a movable contact point, a protective circuit and a releasing mechanism, wherein the releasing mechanism comprises a movable iron core, a coil framework, a failure releasing coil, a short circuit releasing coil, a moving magnet and a fixed iron core; the rocker is arranged at the outer side of a support seat in a movable rocking way; magnets are respectively arranged on the support seat corresponding to both ends of the rocker; magnetizers are covered and fixed at the inner side surface of the rocker corresponding to the magnets; a circuit board is arranged in the shell; the protective circuit is arranged on the circuit board; one end of the movable iron core passes through the support seat and is fixed on the rocker; the coil framework is sleeved on the movable iron core; the failure releasing coil and the short circuit releasing coil are wound outside the coil framework; the moving magnet is movably arranged between the movable iron core and the fixed iron core by a suspending mechanism and corresponds to the rocker relatively to one end of a communication power supply; the fixed contact point corresponds to the rocker relative to one end of a shutdown power supply; and the movable contact point is arranged on the suspending mechanism and corresponds to the fixed contact point. Compared with the prior art, the rocker type fire preventing switch not only has the fire protection function but also can forcibly release the releasing mechanism in a non-electrical state during power failure, therefore, even if power fails, the rocker type fire preventing switch is also in a releasing power failure state and has higher safety.

Description

technical field [0001] The invention relates to the field of electrical appliances, in particular to a seesaw switch. technical background [0002] The existing rocker switch only has a single on-off function and has no fire protection function. [0003] Existing various fireproof switching appliances, taking the fireproof leakage switch as an example, generally include a housing, a protection circuit, a static contact, a moving contact and a tripping mechanism, wherein the protection circuit includes a zero-sequence current transformer, an integrated circuit, Thyristor, test button, etc., the load circuit runs through the zero-sequence current transformer. When electrical leakage occurs, the zero-sequence current transformer immediately detects and sends a signal to the integrated circuit for amplification and processing, driving the thyristor to conduct. The tripping coil of the tripping mechanism is excited by a large current, the tripping mechanism is tripped, and the d...

AI Technical Summary

Problems solved by technology

However, if the user happens to have a power outage when leaving, the release mechanism cannot be tripped, so that the power supply cannot be cut off, which has certain potential safety hazards.

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