The key switch is an electronic switch, which belongs to the electronic component class, which first appeared in Japan, known as a sensitive switch. The main type of key switch is the light touch key switch, which is the light touch switch that we often say. The metal working principle of key switch is to rely on the internal structure of spring force changes to realize the switch, when we use to switch the operating direction pressure pressure switch function is closed, when we want to switch only needs to cancel the pressure on it. The key switch is mainly composed of five parts, insert, base, bullet, button and cover plate.
There are many kinds of key switches, which are mainly divided into 2 categories: the first type is to use metal reeds as switch contacts, and this switch has small contact resistance and good handle. The second kind is the use of conductive rubber as a contact path; the switch has a small contact resistance. When we choose the switch, we can not blindly follow the wind, we need to choose the right switch according to the actual situation.
There are many advantages of key switch, such as small contact resistance, accurate operating force error, and variety of specifications. So it has a wide range of applications, mainly used in electronic equipment and white household appliances. For example: the audio and video products, digital products, remote control, communication products, home appliances, security products, toys, computer products, fitness equipment, medical equipment, banknote pen, laser pen button etc..