US Patent 7332925 Engaging device of circuit board

An engaging device of a circuit board is disclosed. The engaging device is for engaging a circuit board having a positioning hole to a housing of an electronic device. The engaging device includes a conductive hook fixed to the housing, the conductive hook including a hook portion for being hooked to the positioning hole, and a contacting end formed on an end of the hook portion; and a conductive slice fixed to a side of the circuit board, corresponding to the positioning hole for contacting with the contacting end when the hook portion is hooked to the positioning hole, so as to allow static electricity generated by the circuit board to be conducted to the housing, and improve engaging strength of the conductive hook and the housing.