Trigger switch

Abstract

The invention relates to the technical field of devices used for switching on or switching off electric devices, in particular to a trigger switch. The trigger switch can achieve switching on or switching off instantly and is good on-off performance, so that service life is guaranteed. The trigger switch includes an outer shell, a trigger and a pull rod; a working cavity is formed in the outer shell; one end of the pull rod extends into the working cavity of the outer shell, and the other end of the pull rod is connected with the trigger; a movable block assembly and a pull rod spring are arranged in the working cavity of the outer shell; the movable block assembly comprises movable blocks, a base plate and a contact mechanism and further comprises blocking elastic pieces, wherein the blocking elastic pieces are installed on the inner walls of the working cavity, the outer walls of the movable blocks are provided with reverse U-shaped matching clamping blocks, the blocking elastic pieces are provided with U-shaped matching openings, the left ends of the matching openings make contact with the right ends of the matching clamping blocks when the movable blocks are located at the extreme position at the left end, and the right ends of the matching openings make contact with the left ends of the matching clamping blocks when the movable blocks are located at the extreme position at the right end.

Description

technical field [0001] The invention relates to the technical field of devices for turning on or off electrical appliances, in particular to a trigger switch. Background technique [0002] As we all know, the trigger switch is mainly used in relatively high-power angle grinders, cutting machines and other tools. In practical applications, these types of tools are relatively harsh due to the relatively harsh environment and relatively heavy use load, and the service life of the tools is relatively long; These types of tools are relatively demanding on switches. It is required that the switch can withstand the instantaneous large current generated by the tool when it is started, and provide a stable current output during use. At the same time, the switch can withstand the instantaneous large breaking current when it is turned off. Therefore, the core structure of the switch must be able to operate. Stably withstand the load current of the tool product. [0003] At present, m...

AI Technical Summary

Problems solved by technology

[0003] At present, most of the similar switches on the market do not have a long electrical life, or cannot withstand high-power tool applications. In the final analysis, due to the imperfect design of the driving contact mechanism of the switch, it cannot withstand instantaneous high current for a long time in actual use. When the on and off or switch mechanism is first used, the mechanism moves smoothly and shifts quickly, but after a certain number of life spans, the shift appears slow, hysteresis, and the service life is severely shortened.

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