Micro Switches are small, they plays an irreplaceable role!
May 09, 2020
Micro Switches are small, they play an irreplaceable role!
Micro Switches are used for automatic control and safety protection in equipment that requires frequent circuit replacement. They are widely used in electronic equipment, instrumentation, mining, power systems, household appliances, electrical equipment, as well as aerospace, aviation, ships, missiles, Military fields such as tanks have been widely used in the above fields.
Although the Metal Switches are small, they play an irreplaceable role.
Micro Switches
On the reed, when the action reed is displaced to a critical point, an instantaneous action occurs, so that the moving contact and the fixed contact at the end of the action reed are quickly connected or disconnected.
When the 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 action critical point 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 force is small, and the switching is fast. The moving speed of the moving contact has nothing to do with the moving speed of the transmission element.
The Metal Micro Switch are with a small contact interval and quick action mechanism,
The contact mechanism that performs the switching operation with the specified stroke and the specified force is covered with the housing,
There is a switch with a driving rod on the outside. Because the contact distance of the switch is relatively small, it is called a micro switch, also called a sensitive switch.
The electrical text symbol is: SM
working principle
The external mechanical force acts on the action through the transmission elements (pins, buttons, levers, rollers, etc.)
2 types of editing
There are many types of Mini Switches, and there are hundreds of internal structures.
The volume of the micro switch is divided into: conventional type, small size, ultra small size;
The protection performance of the micro switch is divided into: waterproof type, dustproof type, explosion-proof type;
The Automotive Electrical Switches disconnection form is divided into: there are single type, double type, multi type.
There is also a strong disconnection micro switch (when the reed of the switch does not work, external force can also make the switch open);
The breaking capacity of the micro switch is divided into: ordinary type, DC type, micro current type, high current type. According to the use environment, there are ordinary type, high temperature resistant type (250 ℃), ultra high temperature resistant ceramic type (400 ℃)
The Mini Micro Switch is generally based on the non-auxiliary pressing attachment as the basic type, and derives a small stroke type and a large stroke type.
Different auxiliary pressing accessories can be added according to needs, and the switches can be divided into various types such as button type, reed roller type, lever roller type, short boom type, long boom type and so on according to the different pressing accessories added.
The mechanical life of the micro switch ranges from 3W times to 1000W times, generally 10W, 20W, 50W, 100W times, 300W times, 500W times, 800W times,
Domestic beryllium bronze, tin bronze, stainless steel wire materials are generally used as internal reeds, and the highest in foreign countries can be 1000W times. The internal reeds are made of rare metal titanium.
