Patent ID: 7298630

Claim:
A coupling mechanism for anchoring a plugging mainboard on a coupling interface of an electronic device to prevent electromagnetic wave generated by the plugging mainboard when connected electrically to the electronic device from leaking outwards, comprising: a coupling member which has a coupling portion and two anchor ends, the coupling portion having respectively a groove on a upper side and a lower side, the anchor ends being vertically located on two sides of the coupling portion in parallel with each other to latch and anchor the plugging mainboard on the coupling mechanism and prevent the electromagnetic wave from leaking outwards through the two sides of the coupling portion; and two bucking blades wedged in the grooves; wherein the bucking blades are squeezed and deformed by the coupling member and the coupling interface when the coupling member receives a force to maintain a latch position with the coupling interface to fill a tolerance between the coupling member and the coupling interface to prevent the electromagnetic wave from leaking out.