The micro switch is a contact mechanism with a small contact interval and a snap-action mechanism, and a contact mechanism that performs the switching action with a specified stroke and a specified force. Small, hence the name micro switch, also called sensitive switch. The micro switch has a small contact interval and a quick-action mechanism. The contact mechanism that performs the switching action with a specified stroke and force is covered by a casing, with a driver outside and a small shape. Micro switches are composed of five major categories of components. The contact distance is small and the torque is large. Usually there is a drive rod on the outside.
There are many types of micro switches, and there are hundreds of internal structures. According to the volume, there are ordinary, small, and ultra-small; according to the protection performance, there are waterproof, dust-proof, and explosion-proof types; according to the breaking form, there are Single type, double type, multi-link type.
There is also a strong disconnect micro switch (when the reed of the switch does not work, the external force can also make the switch disconnect); according to the breaking capacity, there are ordinary type, DC type, micro-current type, and high-current type.
According to the use environment, there are ordinary type, high temperature resistant type (250℃), super high temperature resistant ceramic type (400℃)
Micro switches are generally based on unassisted pressing accessories as the basic type, and small stroke types and large stroke types are derived. Different auxiliary pressing accessories can be added according to the needs. According to the different pressing accessories added, the switches can be divided into various forms such as button type, reed roller type, lever roller type, short boom type, long boom type and so on.
In terms of size, there are small, ultra-small, ultra-small and so on. Functionally, it is waterproof. The most common application is the mouse button.
(1) Small micro switch:
The general size is 27.8 in length, 10.3 in width and 15.9 in height. In terms of parameters, there are different changes such as high capacity and low load.
(2) Ultra-small micro switch
The general size is 19.8 long, 6.4 wide, 10.2 high, and functionally has different performances of high precision and long life.
(3) Super small micro switch
The general size is 12.8 in length, 5.8 in width, 6.5 in height, and there is an extra-thin design in this type.
What the microswitch does
Although the micro switch is small, it plays an irreplaceable role in our daily life, and realizes automatic control and safety protection in equipment that requires frequent circuit switching. At present, it has been widely used in electronic equipment, instrumentation, mining, power systems, household appliances, as well as aerospace, aviation, missiles, tanks and other military fields. In addition, they can also be used in computer mice, car mice, automotive electronic products, 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 timers.
