The installation of the PC board did you know?
PC board installation method with screw installation method, the specific method is as follows:
1, screw spacing, can according to the thickness, proper configuration, spacing is too small and too much is not good. Such as the spacing is too small, sometimes stress caused by too tight, cause damage; Such as spacing is too big, and can make the plate fixed instability.
note: such as fixed plate directly with self tapping screw, the screw spacing, the greater the plate is not easy to damage due to stress.
2, screw holes the size of the plate must be considered summer night heat bilges cold shrink and books. In general, the screw holes should be larger than the screw diameter at least 2 ~ 4 mm, to reserve expansion space.
3, the position of the screw holes near the edge of the plate is too close, very easy to cause the broken plate, in general, the position of the screw holes from the board edge for the screw hole diameter of 2. More than 5 times.
4, screws do not lock is too tight, otherwise the deformation, and stress.
5, lock the screw on the plate is best not to choose self tapping screw, otherwise produce stress, and stress at the plate thickness increases.
6, to reduce the pressure of screw with material directly, and the available gaskets pad during filling, but the PVC sheet and some rubber ring gasket damage, do not use.
the above content is the small make up for you to arrange the PC board, hope to be of help.
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