PCB board on the paste metal dome switch method

Metal dome switch is a metal material to make a very small button, with a conductive function, convex, does not have the ability to fix, single mounted on the PCB board is relatively slow, and mounting is not stable, then we do not find a fixed medium in the PCB board metal dome switch is equal to a waste of time, the fixing method is very kind of, such as glue, with wire tied! Or directly on the board to make a card teeth stuck in it, you can also weld on it, or made into a special needs stickers to fix it on it, these methods can solve the metal dome switch fixed problem, but these methods are feasible, the following we will analyze.

We all know that glue has a fixing function, especially the kind of strong glue, many things can be firmly fixed together. But is metal dome switch fixable? Before analyzing this problem, we first come to understand what metal dome switch is used for, metal dome switch with the help of the conductivity of the metal material, after stamping and other industrial production processing, it has a stable rebound strength, you need to conduct electricity when pressed on the conductive function can be achieved. Understand these after we pay attention to see the strong adhesive paste in metal dome switch products is not line into a layer of gel, this layer of gel can play an insulating role, especially when the very small voltage has played a complete insulation, then with the glue after the loss of conductive properties, fixed with glue can still be?

With the method of sticking on the tie we come to see if it is feasible, we use metal dome switch is in need of current through the time to press down to let it through, do not need to release it when there is no current through, if we use the wire to tie the metal dome switch is not convex, and then the role of the wire under the strength of the shape of the plane, but also accidentally do not press the strike! If we tie the metal dome switch with a wire, it will not be convex, but will become flat under the force of the wire, which means that accidentally, without pressing the metal dome switch, it will always be in a conductive state.