Abstract: An electronic device includes a shell defining a space and an opening therein. A fixing pole extends into the space from an inner surface of the shell adjacent to the opening. A circuit board is received in the space, and defines a through hole corresponding to the fixing pole. A push button is arranged in the shell, and includes a button body extending into the opening of the shell and being exposed to the outside, a fixing member, and a connecting member interconnecting the fixing member and the button body. The fixing member defines a fixing hole receiving the fixing pole therein. Two opposite sides of the fixing member abut against an inner surface of the shell and the circuit board, respectively. A locking member extends through the through hole and the fixing hole into the fixing pole to assemble the circuit board, the push button to the shell.

Abstract: A fastening device includes a cover, an actuating member rotatably attached on the cover, and a locking member disposed on the cover and engaging with the actuating member. The cover includes a hook capable of being locked and unlocked on an electronic device, and defines a through hole near the hook and the actuating member capable of rotating around a rotating center. The actuating member is locked on the cover while being pushed. The locking member including a locking portion capable of passing through the through hole and inserting into the electronic device to lock the hook on the electronic device and withdrawing from the through hole when the actuating member is pushed to rotate.

Abstract: A portable apparatus includes an electronic device defining a locking slot and a positioning device for detachably attached to the electronic device. The positioning device includes a cover defining an opening and a through hole; a supporting member comprising a hook protruding from the through hole to insert in the locking slot to lock in the electronic device and a supporting portion protruding from the opening of the cover to support the electronic device; and a dampening member fixed to the supporting member in the cover.

Abstract: A fastening device for a portable electrical device includes a base defining a curved sliding slot; a locking member rotatably attached to the base 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 base, and an elastical member fixed on the actuating member and the base, and capable of positioning the actuating member at a first position and a second position. The actuating member comprises a sliding portion and a driving portion. The sliding portion is movably received in the curved sliding slot, the driving portion contacting with the locking member.

Abstract: A fastening device for fixing an electronic device includes a base board; a hook fixed on the base board and capable of inserting into the electronic device; a locking member attached on the base board, the locking member is rotatable in a first rotating plane; an actuating member attached on the base board and adjacent to the locking member, and a resilient member comprising two ends and a winding connecting with the two ends. The actuating member is rotatable between a first position and a second position in a second rotating plane, which is perpendicular to the first rotating plane. The actuating member contacting with the locking member. One of the two ends fixed on the actuating member, and the other one of the two ends fixed on the baseboard. The winding unrestrained disposed by the two ends.

Abstract: An electronic device includes a housing defining a through hole, a circuit board fixed in the housing, including a switch and a grounding portion connecting with the ground, a fastening member received in the through hole fixed on the housing and contacting the grounding portion, passing static electricity therethrough and defining a mounting hole, and an actuating member received in the mounting hole and contacting the fastening member, and pressing the switch when actuated; wherein the fastening member and the actuating member are conductive.

Abstract: A fastening device for a portable electrical device includes a base defining a curved sliding slot; a locking member rotatably attached to the base 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 base, and an elastical member fixed on the actuating member and the base, and capable of positioning the actuating member at a first position and a second position. The actuating member comprises a sliding portion and a driving portion. The sliding portion is movably received in the curved sliding slot, the driving portion contacting with the locking member.

Abstract: A fastening device includes a cover, an actuating member rotatably attached on the cover, and a locking member disposed on the cover and engaging with the actuating member. The cover includes a hook capable of being locked and unlocked on an electronic device, and defines a through hole near the hook and the actuating member capable of rotating around a rotating center. The actuating member is locked on the cover while being pushed. The locking member including a locking portion capable of passing through the through hole and inserting into the electronic device to lock the hook on the electronic device and withdrawing from the through hole when the actuating member is pushed to rotate.

Abstract: A fastening device for fixing an electronic device includes a base board; a hook fixed on the base board and capable of inserting into the electronic device; a locking member attached on the base board, the locking member is rotatable in a first rotating plane; an actuating member attached on the base board and adjacent to the locking member, and a resilient member comprising two ends and a winding connecting with the two ends. The actuating member is rotatable between a first position and a second position in a second rotating plane, which is perpendicular to the first rotating plane. The actuating member contacting with the locking member. One of the two ends fixed on the actuating member, and the other one of the two ends fixed on the baseboard. The winding unrestrained disposed by the two ends.

Abstract: A portable apparatus includes an electronic device defining a locking slot and a positioning device for detachably attached to the electronic device. The positioning device includes a cover defining an opening and a through hole; a supporting member comprising a hook protruding from the through hole to insert in the locking slot to lock in the electronic device and a supporting portion protruding from the opening of the cover to support the electronic device; and a dampening member fixed to the supporting member in the cover.

Abstract: An electronic device includes a housing defining a through hole, a circuit board fixed in the housing, including a switch and a grounding portion connecting with the ground, a fastening member received in the through hole fixed on the housing and contacting the grounding portion, passing static electricity therethrough and defining a mounting hole, and an actuating member received in the mounting hole and contacting the fastening member, and pressing the switch when actuated; wherein the fastening member and the actuating member are conductive.

Abstract: An electronic device includes a shell defining a space and an opening therein. A fixing pole extends into the space from an inner surface of the shell adjacent to the opening. A circuit board is received in the space, and defines a through hole corresponding to the fixing pole. A push button is arranged in the shell, and includes a button body extending into the opening of the shell and being exposed to the outside, a fixing member, and a connecting member interconnecting the fixing member and the button body. The fixing member defines a fixing hole receiving the fixing pole therein. Two opposite sides of the fixing member abut against an inner surface of the shell and the circuit board, respectively. A locking member extends through the through hole and the fixing hole into the fixing pole to assemble the circuit board, the push button to the shell.

Abstract: A flat panel display includes a screen, a printed circuit board, a signal cable, and a frame. The frame includes a lower case, an upper case, and two fastening arms. The upper case cooperatively joins with the lower case to receive the screen, the printed circuit board, and the signal cable. The two fastening arms fix two adjacent corners of the screen onto the upper case. The printed circuit board controls display of the screen via the signal cable.