Silicone key card key reason?

If you are doing the whole machine structure design, but also have used silicone keys, you may have encountered a problem. Hard to design a silicone button, after the silicone button factory proofing a long wait, after receiving the sample to the machine, and then a press... Oh, my God! I can't get up when I push this button! In fact, the silicone key card key and the dead key is a common problem, mainly caused by the following reasons.

1, the coordination structure between the silicone button and the shell is not designed well, resulting in the silicone button after the installation of the card key and dead key, this reason accounts for almost 90% of the possibility of this problem. It is mainly reflected in the design of the matching gap between the key and the shell is too small or too large, and whether the center between the key and the shell is consistent, whether the drawing of the key is reasonable and so on.
 

2. The load and resilience of silicone keys are too low, resulting in stuck keys and stuck. The load is too low for two reasons,
First, the load design of the key itself is too low, such as according to the shape of the key, weight and the friction loss of the shell, this requires 50g of resilience to make the key achieve good resilience, and in the design of the silicone key structure only set 20g of resilience, the small horse cart will of course not play up.
The second is that the key load design is not a problem, but there are mistakes in the production process of silicone keys, resulting in insufficient resilience, resulting in the dead key.
 

3, eccentricity will lead to silicone keys stuck and dead keys. The so-called eccentricity is that when the silicone button is pressed, the button is not vertically sinking, but tilted to one side, which is usually because the silicone mold positioning column is worn or not allowed to locate.
 

4, silicone key damage leads to jamming and dead keys, which is usually the use of silicone keys for a long time, the load wall is broken, resulting in rebound failure.
 

5, the shell has burr or tip leading to the silicone key card key dead key. This is very well understood without much explanation, just need to clean the burr and tip of the shell.