How to design the damper between the circuit board and housing?
I'm designing a communication module which can put in an extreme environment for a long time.
But now, I have no idea about the damper. I would use rubber or silicone, even use TPE with 3D printing.
I can't use any screw to rigid the damper,
so I don't know how to rigid the damper on housing and circuit carrier.
the grey part is the housing
the red part is the carrier
the green parts are the circuit boards
4 Answers
Hello Lou,
Normally the technique used for circuit isolation is rubber fixings or shock reducers like on dvd mounts.
Rubber fan mounts would be my first choice as cost is low.
You could also go with DVD / CD ruber isolation mounts although these are usually more expensive. Keep me posted on your final solution. I have attached links and pictures to this message for you.
Thanks for your reply, Xgentec Jason.
Rubber fan mount is similar to my final solution.
But I don't understand how DVD/CD rubber isolation rigid on the chassis and circuit board. Can you explain it? I have no idea with the metal stick's function.
This is my solution.
Hello again Eric,
That looks like a good little solution you have come up with there already.
DVD or CD Shock isolation mounts work on the same principle. Think of a lump of flexible silicone. Now Imagine a bolt moulded on to either side of the silicone but isolated from each other so the silicone still flexes in the middle.
This is a crude description but in principle is the same. DVD or CD Shock isolation mounts usually have full isolation with a rubber gasket in the middle. These are usually designed and made by the manufacturer.
