Introduction to the Working Principle of Fretting Switch with Pressure Handle
Release time：2019-04-17 Clicks： Click
Today, we introduce the micro-switch with pressure handle. Here we want to share with you the knowledge of working principle. If you are interested in it, you are welcome to know about it.
When it comes to switches, we are all familiar with them. Indeed, there are built-in or external switching controls in all the devices or machines used for electricity in our life. Here we are talking about a micro-switch with a pressure handle in the switch family. Many people don't understand where the switch is used. In fact, it plays an important role in many of our electronic products.
The computer mouse is the most frequently used pressure handle micro-switch, which is so sensitive and durable. In addition, there are many fields such as small household appliances, communication equipment, automotive electronic products, industrial machinery, electric tools, medical devices and so on, which are inseparable from micro-switch. Although the micro-switch with pressure handle is small in size, it has such great achievements. What is its working principle?
External machinery exerts force on the action reed through some transmission elements (pins, buttons, levers, rollers, etc.) and accumulates energy to the critical point, then instantaneous action occurs. At this time, the dynamic contact at the end of the action reed is quickly connected or disconnected with the fixed contact. When the force used on the transmission element disappears, the reed in the switch reacts immediately. At this time, the circuit If the reverse travel of the transmission element reaches the critical point of the reed action, the reverse action will be completed in an instant.
The micro-switch with pressure handle has its excellent performance, but there are some other characteristics that other switches do not have, such as small contact spacing, small press power, short action travel and fast on-off, which are also the factors of its widespread application.