Micro switches are used for automatic control and safety maintenance in equipment that requires frequent switching circuits, and are widely used in electronic equipment, instrumentation, mining, power systems, household appliances, electrical equipment, as well as aerospace, aviation, ships, missiles, In military fields such as tanks, it has an irreplaceable effect.
The micro switch is small in size, but has a great effect, which can be seen everywhere in our life. For example, computer mouse, car mouse, car electronic products, communication equipment, military products, testing instruments, gas water heaters, gas water heaters, gas stoves, small household appliances, microwave ovens, rice cookers, floating ball equipment, medical equipment, building automation, electric Tools and generally electrical and radio equipment, 24-hour timers, etc.
When the effect 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 critical point of the action of the reed, the reverse action is completed instantaneously. The contact distance of the micro switch is small, the action stroke is short, the pressing power is small, and the on-off is agile. The action speed of the moving contact has nothing to do with the action speed of the transmission element. The micro switch has a small contact distance and a quick-action structure. The contact structure for switching action with a regular stroke and force is covered by a shell, and there is a driver outside it, and the shape is small. The micro switch is composed of 5 categories of components, the actuator part, the housing part, the contact part, the quick-action organization part, and the terminal part.
There are various 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 method, there are Single type, double type, multi-link type. Now 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, high-current type . According to the application environment, there are ordinary type, high temperature resistant type (250 ℃), super high temperature resistant ceramic type (400 ℃). Micro switches are usually based on unassisted pressing accessories as the basic type, and are derived from small stroke types and large stroke types. According to the needs, different auxiliary pressing accessories can be added. According to the different pressing auxiliary switches involved, it can be divided into button type, reed roller type, roller type, short boom type, long boom type and so on.
1. The current and voltage used are relatively small, so it is best to use low-power circuit devices at this time, and it is best not to use copper wires, because the safety problem of electricity will occur.
2. If the environment used is relatively humid or the temperature is relatively high, it is best to use composite silver gold-plated points.
3. When opening or closing, try not to be too large, and do not open or close frequently, otherwise the service life will be reduced.
4. When using, in order to prevent the screw from loosening and damage, it is best to use a washer, in this way, the device will be firmer and not easy to fall off.
5. The micro switches of electronic products are generally relatively small, and the internal structure is very precise. If the user uses too much force, it is easy to damage the precise structure. In addition, the switch cannot be pressed all the time. Such behavior will easily lead to They fail, and in subsequent use, the switch is not responsive enough.
