Principle of Micro Switch: external mechanical force acts on the action reed through the transmission element (press pin, button, lever, roller, etc.), and generates instantaneous action when the action reed is displaced to the critical point, so that the moving contact at the end of the action reed is quickly connected or disconnected from the stationary contact. When the force on the transmission element is removed, the action reed produces reverse action force. When the reverse travel of the transmission element reaches the action critical point of the reed, the reverse action is completed instantaneously. Micro switch contact spacing is small, short travel, according to the power, quick break. The speed of the moving contact has nothing to do with the speed of the transmission element.
There are many kinds of micro switch, internal structure has hundreds of kinds, according to the volume of ordinary type, small, ultra-small; According to the protection performance, there are waterproof, dustproof, explosion-proof type; According to the breaking form, there are single - link, double - link, multi - link type.
There is also a strong disconnect micro switch (when the switch reed does not work, external force can also make the switch off); According to the breaking capacity, there are ordinary type, DC type, micro current type, large current type.
According to the use of environment, there are ordinary type, high temperature resistant type (250℃), super high temperature resistant ceramic type (400℃)
Micro switch generally with no auxiliary press accessories as the basic type, and derived from small stroke type, large stroke type. Different auxiliary press accessories can be added according to needs. According to the different auxiliary press switch, it can be divided into push-button type, spring roller type, lever roller type, short boom type, long boom type and other forms.
In size there are small, super small, super small and so on. Function is waterproof type. The most common application is the mouse button.
(1)The general size is 27.8 in length, 10.3 in width and 15.9 in height, and the parameters have different variations such as high capacity and low load.
(2) ultra-small micro switch
The general size is 19.8 in length, 6.4 in width and 10.2 in height. It has different performance of high precision and high life in function.
(3) super small micro switch
The general size is 12.8 in length, 5.8 in width and 6.5 in height, and there is an extra thin design in this type.
