Patent ID: 8061673

Claim:
A fastening device for a portable electrical device comprising: a fixing member defining two curved sliding slots; a locking member rotatably attached to the fixing member, and a portion of the locking member capable of inserting into the portable electrical device and withdrawing from the portable electrical device; an actuating member rotatably attached to the fixing member, the actuating member comprising two claws and a driving portion, the claws respectively movably received in the curved sliding slots and slidably clasping the fixing member to prevent the actuating member from disengaging with the fixing member when rotating; the driving portion contacting with the locking member; and an elastical member fixed on the actuating member and the fixing member, and capable of positioning the actuating member at a first position and a second position; wherein the locking member is inserted into the portable electrical device when the actuating member rotates from the first position to the second position, and the locking member draws back from the portable electrical device when the actuating member rotates from the second position to the first position.