ELECTROMAGNETIC INTERFERENCE SHIELDS

摘要

An electromagnetic interference (EMI) shield fills an aperture in a wall of a system unit housing. The electromagnetic interference shield is integrally formed from sheet metal (e.g. stainless steel). It comprises a perforated substantially planar portion with fingers defined around the periphery thereof. A plurality of first fingers are preformed to define abutments to abut against an outer surface of the wall and a plurality of second fingers are preformed to define sprung latches for latching within the aperture. The combination of first and second fingers means that the EMI shield can be located in the aperture in a removable manner without the use of tools. The perforations are configured to permit ventilation of the interior system housing while preventing EMI interference radiating from the system housing. A handle portion is also formed at the periphery of the substantially planar portion for facilitating the insertion and removal of the shield.