The function of microswitches
Micro switch
button is a small precision electronic micro switch widely used in various electronic devices, such as mobile phones, computers, cars, etc. Its main functions include:
Switch control. Control the normal start or stop of electrical appliances by disconnecting or connecting circuits, ensuring the stability and safety of electrical operation.
Signal triggering. As a trigger in electronic components, it converts mechanical motion into electrical signal output for controlling the operation of other electronic components.
Position detection. Used in mechanical equipment to check whether the position of mechanical components meets the requirements.
Electrical protection. As a protective switch, in the event of a circuit malfunction or electrical malfunction, the micro switch will promptly cut off the circuit to protect the electrical and circuit safety.
Equipment monitoring. By detecting the opening and closing of micro contacts, the device status can be determined, achieving real-time monitoring of the device status and reducing the probability of faults occurring.
Sensor applications. In industrial automation, micro switches are used as sensors to sense the motion status and position of objects, achieving control and automated operation of mechanical equipment.
In addition, micro switches are widely used in household appliances, specialized equipment, medical instruments, electric tools, aviation devices, and other fields, and can work normally in special environments (such as high temperature, high pressure, humidity, water spraying, vibration, etc.).
Types of microswitches
There are various types of micro switches
, with hundreds or even thousands of internal structures. They can be classified into ordinary, small, and ultra small types based on body integration; According to protective performance, there are waterproof, dustproof, and explosion-proof types; According to the breaking form, there are single connected, double connected, and multi connected types. There is also a type of strong disconnect microswitch (when the spring of the switch is not working, external force can also cause the swich to disconnect); According to the breaking capacity, there are ordinary type, DC type, micro current type, and high current type. According to the usage environment, there are ordinary type, high-temperature resistant type (250 ℃), and ultra-high temperature resistant ceramic type (400 ℃)
Micro switches
are generally based on the basic form of non auxiliary pressing accessories, and derive small and large operating programs. According to the needs, different auxiliary pressing accessories can be added. According to the different pressing accessory switches added, they can be divided into various forms such as button type, spring roller type, lever roller type, short arm type, long arm type, etc.
Micro switches are widely used for automatic control and safety protection in equipment that requires frequent circuit switching. They are widely used in electronic equipment, instruments and meters, mines, power systems, household appliances, electrical equipment, as well as military fields such as aerospace, aviation, ships, missiles, tanks, etc. They have been widely used in these fields. Although small, switches play an irreplaceable role.
At present, the mechanical life of micro switches on the domestic market varies from 3W to 1000W times according to different usage requirements, generally including 10W, 20W, 50W, 100W, 300W, 500W, and 800W times. In China, beryllium bronze, tin bronze, and stainless steel wire are generally used as spring plates, while ALPS abroad can reach up to 1000W times. Their spring plates are made of rare metal titanium. The highest WK-01B produced by domestic Tengfei Electronics can also reach 1000W times.
