Patent ID: 7535731

Claim:
A retention device, applied in an electronic device comprising a case and a circuit board, wherein the circuit board shifts relative to the case along a integrate direction or a release direction, so as to be caught by the case or detached from the case, and the circuit board is fixed on the case through the retention device, the retention device comprising: a fixed base, disposed on the case and having a slot; a fastener, having a combining portion and an elastic portion, wherein the combining portion is disposed on the case, and the elastic portion blocks off an opening of the slot and is deformed under a force; and a latching member, disposed on a side of the circuit board opposite to the fastener, the latching member shifting along the integrate direction with the circuit board, pressing the elastic portion to make it deformed, and shifting to be accommodated in the slot through the opening and blocked by the elastic portion, so as to fix the circuit board.