The working principle of the micro switch: the external force acts on the action reed according to the transmission element (press pin, button, lever, roller, etc.). When the action reed deviates to the critical point, it will produce an instantaneous action to connect or disconnect the moving points at the tail of the action reed. When the force in the transmission element moves, the action torsion spring generates a reverse action force, and when the reverse stroke of the transmission element reaches the action critical point of the torsion spring, the reverse action is completed immediately. The micro-switch has small contact distance, short action stroke, low power and fast on-off. The action speed of its dynamic contact point has nothing to do with the action speed of the transmission element. Micro-switch types: There are many types of micro-switches with thousands of internal structures, which are divided into ordinary, small, and ultra-small according to volume; according to maintenance characteristics, waterproof, dustproof, and explosion-proof; according to the segmentation method, there are single, double, and multi-connection types. There is also a micro switch with strong disconnection (when the torsion spring of the switch does not work, the switch can be disconnected by external force); according to the splitting ability, there are ordinary, DC, microcurrent and large current. According to the usage environment, there are ordinary, heat-resistant (250°C) pottery type (400°C) Micro switches are generally based on unassisted tap accessories as the basic type, and small stroke types and large stroke types are derived. Different assisted pressing aids can be added as needed. According to the different light switches added, it can be divided into button type, spring roller type, lever roller type, short arm type, long arm type, etc. Micro switches perform automatic control and safety protection in equipment that must frequently replace circuits, and are widely used in electronic equipment, instruments, mines, power supply systems, household appliances, electrical equipment, aerospace, aviation, ships, missiles, tanks and other national defense fields. At present, the service life of the micro switch machinery in the domestic market starts from 3W to 1000W according to different application requirements, generally 10W, 20W, 50W, 100W, 300W, 500W, 800W beryllium bronze, tin bronze, stainless steel wire springs, foreign ALPS Up to 1000W.
Post time: Jul-30-2022