Metal dome Tactile switch

The tact switch is evolved from the metal dome, the metal dome is the first switch used. Its structure is single and production speed is fast. But the product lifespan is low, single performance can not meet the market demand. According to the increasingly high demand for product performance, simple metal dome have been slowly eliminated by the market. And then we press the tact switch, and it works the same way. It's an updated version of the wok-chip, and its heart is the wok-chip. It looks just like Iron Man. The initial use of consumers only have requirements for the quality and performance of products, with the improvement of market products, consumption level, product quality and performance also began to fail to meet consumers. Those who are familiar with this switch all know that the switch has its feel, which is simply the strength of the switch. The light touch, key, toggle and micro movement of these switches are all strength parameters. Industry standard: micro motion strength 30-100gf, key strength 250-400gf, toggle strength 200-400gf, tact switch 50-400gf. Hand feel good or bad and the strength of the good or bad has a direct relationship.

The strength of the positive and negative tolerance range, the better the small hand feeling, the domestic production of shrapnel positive and negative tolerance range is large, the value in plus or minus 50; The positive and negative tolerance range of the shrapnel produced in South Korea is relatively medium, the value is plus or minus 30; The shrapnel imported from Japan is also the best shrapnel in the world. The positive and negative tolerance range of the Japanese three-yuan shrapnel used by Pin Zan is very small, and the value is plus or minus 10. Conclusion: The higher the precision of the shrapnel, the better the touch of the switch. The working principle of the switch: the switch can be switched on by pressing the switch button when working. When the button is released, the switch is disconnected, and its internal structure is realized by the force of the metal shrapnel. The working principle of the metal shrapnel referred to as shrapnel, shrapnel material has two kinds. There are two kinds of shrapnel materials: phosphorous copper and stainless steel. There are two kinds of plating process: silver plating and gold plating. The gold plating and silver plating process of FVWIN are above 0.3um.