| 摘要 |
<p>PURPOSE:To suppress electromagnetic noise of a card easily without changing an electromagnetic shield structure of the main body of an electronic apparatus, by a construction wherein the ground for signals of the card itself is isolated completely from the ground for electromagnetic shield. CONSTITUTION:A ground pin 26 for shield is connected to a ground pattern block 62B for electromagnetic shield by a connection 30C and connected electrically, at the point of a conductive connection element 62A, to a shield metal plate 64 on the upper side of a card via a first spring 62. The metal shield plate 64 on the upper side of the card has a conductive connection element 63A and it is connected, at the point of a conductive connection element 63B, to a metal shield plate 65 on the lower side of the card by a second spring 63. These routes for electric connection are insulated from a connection line of a signal-side ground pin 22, and thus a noise component contained in a signal- side ground line 30A is prevented from flowing into the metal shield plates 64 and 65 on the upper and lower sides.</p> |
