It is also called the dead-key phenomenon of the dome when it is pressed down, which is fatal to the dome; it directly causes the whole product to not work properly, so why does it cause the dead-key phenomenon of the dome? Let's take a simple look Analyze it:
1. The thickness of the conventional pot is 0.06mm, and its life span is 500,000 to 1.5 million times (depending on the load requirement).
2. The conventional design springback value of the dome slices is ≧40gf. When it is lower than the special design value of 40gf, as the service life reaches the life limit, the phenomenon of non-rebound dead key will occur.
3. The material of the pot is stainless steel, its designed thickness is generally in the range of [0.06~0.1mm], and the conventional design load value is 100~300gf. bomb.
4. When the dome patch is torn off the release film before attaching the PCB board, or when the dome patch is produced, when the operation is bent, the dome sheet is bent by external force and is prone to non-rebound dead KEY phenomenon ( Damage or creases the dome, or change the concave structure of the dome itself due to external force).
5. The dome patch is not designed with a ventilation groove, when the air in the dome stroke cannot be discharged, causing the dead key phenomenon to be formed when the load does not move.
6. When the design does not reserve a pre-pressing stroke, the silicone or plastic guide posts will act on the pot for a long time, making the pot heavy, reducing the service life of the pot and forming a dead key or producing a non-pressing function.
