Working principle:
In micro switches, the rotating elements include buttons, push pins, rollers and levers, etc. As long as the external mechanical force is applied through the transmission element (press pin , buttons, levers, rollers, etc.) exert force on the action reed. When the action reed moves 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 generates a reverse action force. When the reverse stroke of the transmission element reaches the action critical point of the reed, the reverse action is completed instantaneously.
The contact spacing of the micro switch is small, the action stroke is short, the pressing power is small, and the switching is rapid. The action speed of its movable contact has nothing to do with the action speed of the transmission element.
Extended information:
Uses of micro switches:
Micro switches are small in size, but they are very effective and can be used everywhere in our lives. See. Such as computer mice, car mice, automotive electronics, communication equipment, military products, testing instruments, gas water heaters, gas water heaters, gas stoves, small household appliances, microwave ovens, rice cookers, float equipment, medical equipment, building automation, electric Tools and general electrical and radio equipment, 24-hour timers, etc.
Currently, the mechanical life of micro switches on the domestic market ranges from 3W times to 1000W times, depending on the use requirements. Generally, there are 10W, 20W, 50W, 100W, 300W, and 500W times. , 800W times. In China, beryllium bronze, tin bronze, and stainless steel wire are generally used as reeds. Foreign ALPS can achieve up to 1000W times. Their reeds are made of rare metal titanium.
Baidu Encyclopedia-Micro switch