Although the micro switch is small, it plays an irreplaceable role in our daily life, realizing automatic control and safety protection in equipment that needs to frequently switch circuits. At present, it has been widely used in electronic equipment, instrumentation, mining, power systems, household appliances, and military fields such as aerospace, aviation, missiles, and tanks. In addition, they can also be used in computer mice, car mice, automotive electronics, communication equipment, military products, as well as testing instruments, gas water heaters, gas stoves, small household appliances, microwave ovens, rice cookers, floating ball equipment, medical equipment, Building automation, power tools and general electrical and radio equipment, 24-hour timer.

A micro switch is a quick switch that is actuated by pressure, and is also called a sensitive switch. Its working principle is that external mechanical force acts on the action reed through transmission elements (push pins, buttons, levers, rollers, etc.). After the energy accumulates to the critical point, an instantaneous action is generated, so that the movable contact and the fixed contact at the end of the action reed are quickly connected or disconnected. When the force on the transmission element is removed, the action reed produces a reverse action force. When the reverse stroke of the transmission element reaches the critical point of the action of the reed, the reverse action is instantaneously completed. The contact distance of the micro switch is small, the action stroke is short, the pressing force is small, and the on-off is rapid. The movement speed of the moving contact has nothing to do with the movement speed of the transmission element. The micro switch is based on the pin type, and can be derived from the button short stroke type, button large stroke type, button extra large stroke type, roller button type, reed roller type, lever roller type, short boom type, and long boom type. and many more. Micro switches are used in electronic equipment and other equipment for automatic control and safety protection devices that require frequent circuit switching. Micro switches are divided into large, medium and small. According to different needs, they can be divided into waterproof type (used in liquid environment) and ordinary type. The switch connects two lines to provide power on and off control for electrical appliances and machines.

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