| 摘要 |
PURPOSE: An electronic noise shielding apparatus in a communication system is provided to shield the electronic noise and to reduce the contact resistance by installing the expand metal. CONSTITUTION: The electronic noise shielding apparatus comprises a shelf(100), an upper and a lower guide plates(110A,110B) and left and right sidewall panels(120a,120b) and a back plate(130) using electro galvanizing line steel plate or cold rolled steel materials, an expand metal(150) placed between the bottom of the upper plate and the top of the lower plate, and a plurality of guide ribs(140) having slide groove to insert the printed circuit board(PCB). The mesh shaped expand metal shields the electronic noise generated from the PCB.
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