Abstract: An improved pushbutton switch includes an elastic element located in a body. The elastic element is made of metal and bent to form an action which has an inner diameter and two free ends to form respectively two support arms. The support arms are located in the body. When the elastic element is subject to an external pressing force, the inner diameter of the action section contracts slightly and the support arms are pressed downwards to connect two terminals of the pushbutton switch to establish electric connection to deliver signal output. When the external pressing force is released from a press element, the inherent elastic force of the elastic element pushes the press element back to its original location.

Abstract: A cursor controller used to control displacement direction and speed of a cursor by changing equivalent capacitance comprises a conductive layer, two electrode layers and a press body. The electrode layers are attached to each face of the conductive layer respectively, wherein a plurality of electrode lines is formed on each electrode layer; one end of each electrode line is coupled with a resistor, and a vector zone is formed on each electrode layer at a section without connected resistor to cross each other perpendicularly in different orientations. An insulation portion is printed on a peripheral area of the electrode lines and on the resistors. The conductive layer and the electrode layers are glued together to form a thin-film printed circuit board. When the press body is pressed against the electrode layer the conductive layer will contact the electrode layers to effect a matrix output signal.

Abstract: A wireless earphone with a mainframe separated with an output unit comprises a mainframe having a signal portion having a transmission chip, a message processing unit for bidirectionally receiving/transmitting far-end bidirectional signals; and a positioning unit assembled and clamped in a human body; and an output unit having a voice emitting unit arranged at an ear of the human body and outputting signals, a receiving unit arranged at the speaking portion of the human body and then inputting signal to the message processing unit. The mainframe is separated with the output unit, thereby, the whole weight is reduced so as to provide a comfort feeling to the user.

Abstract: An improved scroll switch includes a casing and an encoder mechanism. The casing has a housing chamber which is bordered by two walls which have respectively a bore formed thereon. One wall further has a snap aperture below the bore. The encoder mechanism has a cap which has a snap stub located at one side engageable with the snap aperture whereby the encoder mechanism is capable of fastening to the casing or be disassembled rapidly whenever desired.

Abstract: An improved press switch for channeling signal transmission or output includes a body, two terminal element mounted on the body, a first elastic element located in the body, a press element disposed in the body above the first elastic element, and a face panel for covering the body at the front side thereof. When the press element subjects to an external pressing force, a second elastic element will be driven to press the first elastic element which in turn makes contact with the two terminals for establishing an electrical link to output electric characteristics desired. When the external pressing force is released from the press element, the innate elastic force of the first and second elastic element will push the press element to its original position.

Abstract: An illumination structure for keyboards is provided with a light-indication section in a keyboard for a user to ascertain position of the keyboard easily and for promoting the integral beautification of the same. For realizing abovesaid object, a plurality of pushbutton sets and a first printed circuit board (PCB) used for transmission an instruction of a pressed pushbutton are disposed on the top face of the baseboard. Further, at least a light-indication section is defined in a proper position on the baseboard, and a second PCB is laid underneath the baseboard. A light emitter is arranged on the second PCB at a position corresponding to the light-indication section for emitting light through the latter when power is supplied to the second PCB. By abovesaid construction, a wireless keyboard with light source is built.

Abstract: A housing assembly for an extractable redundant array of independent disks includes a main frame placed in a casing through an open end of the casing; a plurality of extractable frames aligned in two spaced-apart rows in the main frame; and a signal-processing unit disposed in a corridor between the extractable frames for accommodating a plurality of extractable units. The extractable units are respectively inserted in the extractable frames and connected with the signal-processing unit to provide an expanded-capacity housing assembly for the extractable redundant array of independent disks in which each extractable unit (hard disk drive) and the main frame can be extracted individually and independently.

Abstract: A charger for a wireless product comprises a wireless product having a power unit for supplying power to the wireless product; a computer having standard connecting ports which are not connected to any means; a standard connecting wire having one end being connected to the power unit, and having another end being connected to the standard connecting port. The computer charges to the power unit through the standard connecting wire. Then the power unit supplies power to the wireless product. When the power source of the wireless product can not be used, the computer will supply power to the wireless product so that the wireless product will operate continuously.

Abstract: A position control device includes a base board, a conductive spring contact unit and a control key. The base board has one side provided with a conductive contact set that includes a plurality of angularly spaced conductive contacts. The conductive spring contact unit is secured to the base board, and includes a plurality of angularly spaced spring contact arms that extend in radial directions and in a direction away from the base board such that each of the spring contact arms overlies spacedly a corresponding one of the conductive contacts of the conductive contact set. The control key is disposed on the conductive spring contact unit such that application of a force on the control key in a direction toward the base board will result in movement of an appropriate one of the spring contact arms for establishing electrical connection with the corresponding one of the conductive contacts.

Abstract: An instruction input device contains a baseboard having a set of pivot-jointing portions formed with two correspondent pivot holes for penetratingly disposing a shaft with a free end assembled and jointed to an instruction output switch. A flexible layer is assembled and jointed on surface of the shaft, and a coaxial force-bearing layer is further overlapped onto the flexible layer, wherein an instruction actuation switch is disposed on the baseboard at a proper position within reachable action range of the force-bearing layer. By applying the abovesaid simplified architecture, a mouse or a notebook computer with reduced weight, thickness, and size in a relatively lower cost is achievable.

Abstract: A power supply equipped with extractable fan deck to be applied in a computer system comprises a casing and an extractable fan set. The casing further comprises: a main frame formed by a double bending; a lateral board jointed to a lateral face of the main frame; and a rear board mounted to one end of the main frame. The extractable fan set further comprises: a sub-frame with a bent edge for jointing and defining an installation space with the rear board and a fan deck disposed in the installation space. A first fan housed in the fan deck is operated with an associated second fan located oppositely at the front end of a set of power-supply units for creating air convection to improve heat dissipation efficiency and keep the power supply under normal conditions.

Abstract: A rotary switch has a rotary dial, an operation shaft, a housing, a rotary plate and a circuit board. A binding member extends from the rotary dial and inserts through a central through hole of the housing and connects to the contact plate to allow the rotary dial and the contact plate to rotate together. The housing and the circuit board attach and remain stationary, independent of any rotational movement of the rotary dial. The contact plate has a plurality of contact protrusions that extend in a predetermined pattern so that in accordance with rotation of the rotary dial, at least one contact protrusion is brought into electrical contact with at least one linear contact member belonging to a contact member array positioned on the circuit board.

Abstract: A switch for selectively supplying power or signals from a fixed first conductive pin to fixed second and third conductive pins includes a housing, a pushbutton unit including a tappet situated in the housing, a conductive unit including the first, second, and third conductive pins, and a switching unit including a conductive sway element for respectively selectively connecting the first conductive pin to either the second or the third conductive pin. The switching unit also includes an elastic element coupled at a first end with the tappet and at a second end the sway element such that when the first end of the elastic clement is in a first position, said elastic element causes the sway element to connect said first and third conductive pins, and when the first end of the elastic element is moved past a critical line to a second position, the elastic element causes the sway element to also move past the critical line and connect the first and second conductive pins.

Abstract: An improved power supply device for a computer system conforming to the specifications of PS/2 type includes a back-up power supply. A partition plate defines at least one set of compartments in a case and at least one set of power supply units is disposed in the compartments and connected with a power-control panel installed in the case. Each terminal edge at one open end of the case is bent inwardly to form an attachment portion; and a plurality of predetermined fastener-receiving portions is formed in the attachment portion. By the abovesaid architecture, the power supply device can be installed fixedly in a computer system by mounting fasteners to the fastener-receiving portions to thereby build a space spacing power supply device.

Abstract: A rotary switch has a rotary dial, an operation shaft, a housing, a rotary plate and a circuit board. A binding member extends from the rotary dial and inserts through a central through hole of the housing and connects to the contact plate to allow the rotary dial and the contact plate to rotate together. The housing and the circuit board attach and remain stationary, independent of any rotational movement of the rotary dial. The contact plate has a plurality of contact protrusions that extend in a predetermined pattern so that in accordance with rotation of the rotary dial, at least one contact protrusion is brought into electrical contact with at least one linear contact member belonging to a contact member array positioned on the circuit board. The rotary switch operates when a shaft contact portion mounted on the circuit board is pressed by a lower end of the operation shaft in accordance with axial movement of the operation shaft.