Abstract: A keyswitch assembly for constructing a computer keyboard consists of a cap for receiving a key-in force from a user, a link, a conductive rubber, a circuit membrane, a mounting block and a base plate. The base plate defines a number of recesses in one of which the mounting block is fittingly received. The mounting block is formed by plastic injection molding to integrally have mounting brackets and L-shaped protrusion which project through the circuit membrane to supportively engage with a lower portion of the link. An upper portion of the link engages with the cap. The conductive rubber is located on a corresponding switch of a circuit on the circuit membrane and has an upper portion extended through the link to engage with the cap. In an alternative embodiment, screws are used to fixedly connect the mounting block and the base plate together.

Abstract: A keyswitch for use with a keyboard, comprising an actuating mechanism, an elastic member, and a membrane switch is provided. Characterized in that at least a heat dissipating device is attached to the membrane for facilitating heat dissipation thereof.

Abstract: A keyswitch assembly generally comprises a substrate having an opening defined therein. The substrate further forms two pair of supporting lugs adjacent to the opening. A keycap has two pair of mounting lugs that can be attached to the substrate by means of a pair of supporting linkages. One end of each supporting linkage is pivotally supported by the corresponding pair of supporting lugs of the substrate and the other end of each supporting linkage is movably supported by the corresponding pair of mounting lugs of the keycap, wherein said first and second pivoting buds are arranged at a first side defined by said centerline.

Abstract: A card edge connector for receiving and retaining a card edge of a complementary card includes an upper housing and a lower housing each of which defines a central slot therein and the two central slots are in alignment with each other for receiving the card edge of the complementary card. A plurality of contacts each of which includes an upper portion and a lower portion are received in the upper and lower housings so that the upper portion of each contact is slidably received in the upper housing and the lower portion of each contact is fixed in the lower housing.

Abstract: A keyswitch for use with a keyboard comprises a base forming at least a pair of mounting sockets. A first sliding member is movably assembled to one of the mounting sockets. The first sliding member is formed with a slide at a free end thereof. A second sliding member is movably assembled to another of the mounting sockets. The second sliding member is formed with a slide at a free end thereof. Hinging means is arranged between the first and second sliding members and includes at least a sliding groove defined in one of the first and second traversal rods, and a bud formed on one another of the first and second traversal rods corresponding to the sliding groove. A keycap defines a depressing face and a peripheral flange extending from edges of the depressing face. At least a pair of sliding slots are defined in corners of the depressing face for movably receiving the slides of the first and second sliding members.

Abstract: A card edge connector is disclosed, which comprises an elongate insulating housing including a central slot extending along a longitudinal direction thereof for receiving a daughter board, a plurality of conductive contacts provided on longitudinal sides of the central slot for mating with contact fingers formed on the daughter board, and at least one removable positioning key fixed in the insulating housing for matching a cutout formed between two adjacent contact fingers of the daughter board.

Abstract: A keyswitch key includes a thin circuit film comprising a pressure-sensitive switch and at least a first hole defined in the film away from the switch. A metallic base frame is positioned under the film and includes at least one retention member extending through the at least a first hole of the film. An activation mechanism includes a lower portion located on the film and supported by the at least one retention member of the base frame. The activation mechanism is operative to activate/deactivate the switch upon application/release of a manual depression.

Abstract: A connector housing includes a first interface containing contact portions of contact pins therein for electrically contacting an external complementary card and a second interface defining arrays of slits through which corresponding soldering portions of the contact pins to be soldered on a printed circuit board project. A plurality of spacers are formed on the second interface thus preventing solder from communicating with the soldering portions of adjacent contact pins.

Abstract: An electrical connector for electrically connecting an exterior electrical apparatus and a mother board, includes an insulative housing and a pair of board retention means wherein each board retention means further consists of an orienting portion formed on said housing, and a retention portion by stamp process. The retention portion is defined with a connecting section and a pair of elastic claws wherein the orienting portion forms an abutting plate, a straddle portion and a receiving slot. By means of a pair of protrusion formed on the straddle portion and a plurality of bulges formed on the connecting section, the retention portion can be convenient and tight to be assembled within the orienting portion.

Abstract: A locking device for an electrical connector is disclosed. The locking device comprises a main plate body defining two first edges and a second edge, a fixing section extending from each of the first edge of the main plate body for fixing into the electrical connector and a boardlock section for locking into a locking hole of a circuit board. The boardlock section includes two resilient arms extending downward from the second edge of the main plate body and defining a gap between the two resilient arms for inward bending thereof, each of the resilient arms having an outer edge defining a curved retention portion, a vertical straight detent portion extending downward from the retention portion, an inward slant pressing portion extending downward from the detent portion at a first slope, and an inward slant guiding portion extending downward from the pressing portion at a second slope larger than the first slope.

Abstract: An electrical connector assembly for electrically connecting different type daughter board to a mother board, comprises a first connector housing, a second connector housing, a plurality of first contacts and a plurality of second contacts. The first connector housing includes a first slot for receiving one daughter board therein and a plurality of first passageways each receiving one first contact. The second connector housing integrally connected with said the first connector housing, includes a second slot for receiving another daughter board therein and a plurality of second passageways each receiving one second contact. A plurality of third passageways are defined between the slots wherein each third passageway consists of at least a first passageways and a second passageways in the structure thereof for receiving a first contact and a second contact which are alternately arranged.

Abstract: A retainer (10) for use with a card (200), comprises an elongated housing (12) defining a pair of towers (16) at two opposite ends. A rotatable member (22) positioned on the top portion (15) of the tower (16), includes a horizontal locking section (24) which can be horizontally engaged within a notch (202) of the card for latching the card (200) in position, and a vertical pivotal section (26) which can be rotated within the top portion (15) of the tower (16) and retain the rotatable member (22) in position with regard to the housing (12).

Abstract: A card edge connector (10) includes an insulative elongated housing (12) defining a central slot (14) for receiving a card (100). A plurality of passageways (16) are formed by two sides of the central slot (14) for receiving a corresponding number of contacts (18) therein. An upstanding high retention device (20) positioned at either opposite end of the housing (12), includes a pair of side arms (24) for transversely sandwiching the side edge portion (104) of the card, and an engagement arm (36) positioned between such pair of side arms (24) for longitudinally abutting against the side edge (106) of the card (100) whereby the card (100) is reliably and efficiently retained in the housing (12) by the retention device (20).

Abstract: An interface device (24) includes a plurality of passageways (30) extending therethrough for receiving therein a corresponding number of conductors (100) wherein all of the tails (102) of the conductors (100) extend outward to be exposed to an open exterior for easy access for examination or rework. The passageways of the interface device (24) are adapted to receive the contact tails (16) of both of the stacked memory card connectors (12, 14). The conductors (100) of device (24) are arranged to have two-row conductors (100) become one-row tail (102) extending outward on one side of the housing (26) of the device (24) whereby through the interface device (24), the stacked memory card connectors (10) can be electrically engaged therewith for electrically connecting to the mother board (200).