Abstract: A protective cover with ternary structure applied in an electronic product comprises a conjoint plate, a flexible plate connected to the conjoint plate, and a fastening plate connected to the flexible plate. The fastening plate snaps the bottom cover for covering the expansion slot of the electronic product. Also, the conjoint plate, the flexible plate, and the fastening plate are integrated as a whole by double injection technique, and the flexibility of the flexible plate controls the protective cover being closed or opened.

Abstract: A power switch apparatus is disclosed wherein the switch apparatus is applicable in an electronic product comprising a switch device capable of being switched between ON and OFF conditions. The power switch apparatus comprises an active element and a flexible arm. The active element installed inside the electronic product comprises a first connector and is coupled to the switch device. The ON and OFF conditions of the switch device correspond to the different positions of the active element. The flexible arm comprises a second connector and a contactor. The second connector is used to clip with the first connector at the ON condition. The electronic product is configured such that the contactor is not covered and remains accessible. The movement of the contactor is able to transform the shape of the flexible arm and to release the clipping relation between the first connector and the second connector.

Abstract: A stylus-accommodating structure for a wireless communication apparatus includes a printed-circuit board (3), a receiving block (31) and a planar antenna (33). The receiving block further includes an outer surface (300) and a tunnel (310) for receiving a stylus (5). By providing the planar antenna (33) to be formed on the outer surface of the receiving block and further the receiving block to be built at the printed-circuit board, the wireless communication apparatus equipped with the stylus-accommodating structure can then be presented more compact.

Abstract: A wireless communication apparatus integrates a flat speaker (33) onto a liquid crystal display (12) or a rotational shield (3) of the apparatus. The flat speaker includes a vibrator (30) and a transparent vibrating membrane (31) which generates sound when the vibrator vibrates. The transparent vibrating membrane is mounted with a predetermined spacing over the liquid crystal display or over an inner surface of the rotational shield so as to gain a broader voicing surface. Thereby, by providing the flat speaker, the wireless communication apparatus can have a better audio effect.

Abstract: A circuit board assembly with multiple cartridge slots adapted for use in a casing of an electronic product includes a circuit board, at least one first cartridge slot and at least one second cartridge slot. The first cartridge slot is located on a first side of the circuit board. The second cartridge slot is located on a second side of the circuit board. Through mounting the cartridge slots to both sides of the circuit board, utilization space for circuit board design can be increased. Also, both sides of the circuit board can function as heat-dissipating space for facilitating steady operation of circuits and elements located on the circuit board.

Abstract: A PDA battery buckling device has a battery housing. An embedding room is installed in a PDA main frame with an actuation switch, a circuit board and a plurality of power receiving joints therewithin. A lower side of the embedding room has a transversal plate installed with a positioning groove. A positioning protrusion is installed at the bottom plate of the battery housing capable of buckling with the transversal plate. A hook case installed within the battery housing has a plurality of slots for being buckled by power supplying joints therein. After the hook case is hooked in the embedding room, a wedge plate at the lower side of the battery housing is pushed to tightly clamp the transversal plate of the embedding room for connecting power supplying joints and the power receiving joints.

Abstract: A mechanism for ejecting stylus includes the locking apparatus and the ejecting apparatus. When the stylus is put in the slide groove, the movable arm of the locking apparatus exactly hooks the rabbet of the stylus resulting in the retention of stylus. The ejecting apparatus is used for ejecting the stylus along the slide groove. The locking apparatus and the ejecting apparatus are set separately at the end of the slide groove, and the distance between two apparatus is exactly equal to the length of the stylus.