Abstract: A pressing structure includes a support frame and a pressing element. The pressing element is mounted to a bottom surface of the base plate. The pressing element includes a pedestal and a cushion element. The pedestal has a base board. A bottom surface of the base board protrudes downward to form a pressing block. A bottom surface of the pressing block is recessed upward and gradually arched outward from top to bottom to form a first pressing face. The rocker component has a base portion. The first pressing face is in contact with the base portion. The cushion element is mounted on the pedestal, so that the rocker component is mounted on the electronic component by the pressing structure, the rocker component and the electronic component are without affording the excessive pressure force to cause a damage and a deformation of the electronic component.

Abstract: A hand fixation band includes a fastening band, a sliding arm and a damping element. The fastening band has a connecting portion. A bottom surface of the connecting portion is defined as a contact surface. The sliding arm is connected with the fastening band. A top surface of one end of the sliding arm is recessed downward to form an accommodating groove. Several portions of a top surface of a bottom wall of the accommodating groove protrude upward to form a plurality of buckling blocks. The damping element is disposed in the accommodating groove and contacts with the contact surface. Several portions of a bottom surface of the damping element are recessed upward to form a plurality of buckling holes. The plurality of the buckling blocks are buckled in the plurality of the buckling holes.

Abstract: A pressing structure includes a support frame and a pressing element. The pressing element is mounted to a bottom surface of the base plate. The pressing element includes a pedestal and a cushion element. The pedestal has a base board. A bottom surface of the base board protrudes downward to form a pressing block. A bottom surface of the pressing block is recessed upward and gradually arched outward from top to bottom to form a first pressing face. The rocker component has a base portion. The first pressing face is in contact with the base portion. The cushion element is mounted on the pedestal, so that the rocker component is mounted on the electronic component by the pressing structure, the rocker component and the electronic component are without affording the excessive pressure force to cause a damage and a deformation of the electronic component.

Abstract: A hand fixation band includes a fastening band, a sliding arm and a damping element. The fastening band has a connecting portion. A bottom surface of the connecting portion is defined as a contact surface. The sliding arm is connected with the fastening band. A top surface of one end of the sliding arm is recessed downward to form an accommodating groove. Several portions of a top surface of a bottom wall of the accommodating groove protrude upward to form a plurality of buckling blocks. The damping element is disposed in the accommodating groove and contacts with the contact surface. Several portions of a bottom surface of the damping element are recessed upward to form a plurality of buckling holes. The plurality of the buckling blocks are buckled in the plurality of the buckling holes.

Abstract: A battery box structure includes an enclosure which defines a first receiving groove, a first circuit board, a push button elastically disposed between the enclosure and the first circuit board, and a battery holder. At least one pair of conductive terminals is fastened to the first circuit board. A tail end of each of the conductive terminals is arched downward to form a resilient contact portion. The battery holder includes at least one pair of conductive pads. A bottom end of the push button is buckled with a top end of the battery holder. The battery holder is assembled in the first receiving groove. Each of the conductive pads electrically contacts the resilient contact portion. When the push button is pressed rearward, the bottom end of the push button breaks away from the top end of the battery holder. The battery holder is automatically ejected out of the enclosure.

Abstract: A remote controller includes a shell which includes a front shell and a back shell. A holding cavity is formed between the front shell and the back shell. A printed circuit board is fixed in the holding cavity. A mode switch button is mounted through a front face of the front shell and electrically connected to the printed circuit board. A plurality of universal buttons are mounted through the front face of the front shell. Pressing the mode switch button can make a conversion between a TV mode and a game mode. In the TV mode, the universal buttons are used as TV remote buttons; in the game mode, the universal buttons are used as game remote buttons. Therefore, the remote controller can operate in TV function, also operate in game function. It can reduce the use cost, and is convenient for users.

Abstract: A battery box structure includes an enclosure which defines a first receiving groove, a first circuit board, a push button elastically disposed between the enclosure and the first circuit board, and a battery holder. At least one pair of conductive terminals is fastened to the first circuit board. A tail end of each of the conductive terminals is arched downward to form a resilient contact portion. The battery holder includes at least one pair of conductive pads. A bottom end of the push button is buckled with a top end of the battery holder. The battery holder is assembled in the first receiving groove. Each of the conductive pads electrically contacts the resilient contact portion. When the push button is pressed rearward, the bottom end of the push button breaks away from the top end of the battery holder. The battery holder is automatically ejected out of the enclosure.

Abstract: A key structure of a keyboard includes a cap having a cover and a key post protruded under the cover, a key base which has a base board, restraining posts and a guiding post protruded on the base board with being arranged and spaced to surround a receiving space thereamong, and a resilient dome with a recessed passageway mounted between the cover and the base board to receive the key post and the posts in the passageway. The key post includes a base pillar and guiding ribs arranged around the base pillar. A guiding channel is opened in an inside of the guiding post to communicate with the receiving space and passes through a top of the guiding post. The key post is movably inserted in the receiving space with one guiding rib being slidably inserted in the guiding channel and the other guiding ribs being resisted against the respective restraining posts.

Abstract: A key structure has a fixing base. The fixing base includes a fixing board, and a plurality of platforms extending upwards from a top of the fixing board and spaced away from each other. Each of the platforms is formed with a restraining hole at a top thereof. A resilient assembly adhered onto the fixing board has a resilient portion which is placed among the platforms. A key cap is resiliently supported by the resilient portion to suspend above the fixing base, and has a plurality of guiding rods extending downwards from a bottom thereof and movably inserted into the corresponding restraining holes for guiding the key cap to move upwards and downwards with respect to the fixing base.

Abstract: A key structure of a keyboard includes a cap having a cover and a key post protruded under the cover, a key base which has a base board, restraining posts and a guiding post protruded on the base board with being arranged and spaced to surround a receiving space thereamong, and a resilient dome with a recessed passageway mounted between the cover and the base board to receive the key post and the posts in the passageway. The key post includes a base pillar and guiding ribs arranged around the base pillar. A guiding channel is opened in an inside of the guiding post to communicate with the receiving space and passes through a top of the guiding post. The key post is movably inserted in the receiving space with one guiding rib being slidably inserted in the guiding channel and the other guiding ribs being resisted against the respective restraining posts.

Abstract: A key structure has a fixing base. The fixing base includes a fixing board, and a plurality of platforms extending upwards from a top of the fixing board and spaced away from each other. Each of the platforms is formed with a restraining hole at a top thereof. A resilient assembly adhered onto the fixing board has a resilient portion which is placed among the platforms. A key cap is resiliently supported by the resilient portion to suspend above the fixing base, and has a plurality of guiding rods extending downwards from a bottom thereof and movably inserted into the corresponding restraining holes for guiding the key cap to move upwards and downwards with respect to the fixing base.

Abstract: A key switch includes a fixing base having a fixing board. The fixing board has an installing trough and a plurality of positioning rods extending upwards therefrom and arranged around the installing trough. A resilient assembly has a first connecting portion and a second connecting portion engaged in the installing trough. A key cap includes a rectangular top plate and lateral plates extending downwards from edges of the top plate and connecting with one another. The top plate has a substantial middle portion connected with the first connecting portion of the resilient assembly, with the positioning rods substantially disposed at inner corners of the key cap to lean against of the corresponding lateral plates. The lateral plates are suspended above the fixing board for leaving a vertical displacement so that the key cap can be urged to move upwards and downwards along the positioning rods.

Abstract: An USB application device includes a housing having a received room therein and a front opening connected to the received room, a PCB having opposite a rear end portion completely received in the receiving room and a front end portion completely extended outside the housing from the front opening and opposite a top surface and a bottom surface, contacts disposed on the top surface of the front end portion of the PCB and exposed outside of the housing, a shell engaged with the housing and completely covers the front end portion of the PCB and the contacts, and a protection element received in the shell and covering the bottom surface of the front end portion of the PCB. The contacts are exposed outside the protection element. The shell is made of metal material for improving ESD protection in order to comply with the USB standard specification.