What kind of light touch switch is good?
Release time：2019-06-20 Clicks： Click
Some problems of touching the switch need us to understand, that is, what kind of touching the switch is good, specific details we will give you a detailed introduction below.
Because of its small size and light weight, light touch switch is widely used in household appliances, such as video and audio products, digital products, remote control, communication products, household appliances, security products, toys, computer products, fitness equipment, medical equipment, money checker pen, laser pen keys and so on. But touch switch has its shortcomings. Frequent pressing will make the metal shrapnel lose elasticity and become ineffective due to fatigue. So now most of the electrical buttons are directly replaced by conductive rubber or pot switch hardware bullets, such as computer keyboard, remote control and so on.
To distinguish the advantages and disadvantages of light touch switch, it depends mainly on material selection. The front panel and back base of light touch switch are made of PC material. Touch switch housing material lightly. The main switch brands in the market generally use PC materials. The characteristics of impact resistance, high temperature resistance and non-discoloration are very important for the control of electrical switches. The key to the quality of light touch switch is the contact point of light touch switch and the contact point of conductive parts in the process of switch. Look at the contact material. At present, there are three main types of contacts: silver-nickel alloy, silver-cadmium alloy and pure silver. Silver-nickel alloy is an ideal contact material at present. It has good electrical conductivity, hardness and is not easy to oxidize and rust. Silver-cadmium alloy contacts are also good in other aspects, but cadmium belongs to heavy metals. On the one hand, cadmium is harmful to human body, on the other hand, the fusion of silver is not ideal. Small particles of cadmium metal will form on the contact surface, and arc may be pulled out when conducting electricity. In fact, pure silver is not suitable for contacts, conductivity is really good, but pure silver is relatively soft, easy to oxidize, soft texture, switch more contacts will deform; oxidation rust, conductivity will be much worse, rust spots are also easy to heat, it is easy to burn contacts. And the bigger the contact, the better.