Abstract: In an electronic component provided with an electric contact(s) producing an electric conduction by contacting with a contact(s) of a second electronic component, the electric contact comprises a lead-free alloy layer containing tin and silver, and a surface layer portion of the alloy layer at least contacting with the contact of the second electronic component is a tin-rich layer having a tin content higher than that of the other portion of the alloy layer.

Abstract: An electrical connector for connecting oppositely arranged first and second mating electrical devices includes a support member, a first circuit having a plurality of electric contact elements arranged on one surface of the support member to contact electric contacts of the first mating electrical device, a second circuit having a plurality of electric contact elements arranged on the other surface of the support member to contact electric contacts of the second mating electrical device, and conductors connecting the first and second circuits. The electric contact elements of the first and second circuits are formed in the most suitable manner to meet the shapes of the mating electric contacts, respectively. The support member is formed through its thickness with slits closely around the electric contact elements, respectively.

Abstract: A press-in contact includes a connection portion to be connected to a circuit of a board or the like, a press-fitting portion to be fixed in a through-hole of a printed circuit board by press-fitting, and a contact portion contacting a contact of a mating connector. The press-fitting portion is formed to have a U-shaped groove in cross-section whose side walls has a thickness becoming thinner toward the open end of the U-shaped groove to make longer its outer peripheries contacting the through hole. A protrusion projecting from the center of the bottom of the U-shaped groove is provided along the full length of the U-shaped groove to an extent such that the protrusion does not adversely affect the flexibility of the ends of the walls of the U-shaped groove at its open end.

Abstract: A contact structure of an electrical connector including a first connector having a plurality of electric contacts and a second connector having a plurality of electric contact elements elastically and independently supported by forming slits close about the electric contact elements. When the first connector is first urged against the second connector, the electric contact elements are inclined at an angle &agr; by the electric contacts. When the urging force of the first connector is then reduced, the electric contact elements are returned through an angle &bgr; which is less than the angle &agr; to accomplish the electrical connection between the electric contacts and the electric contact elements. An inspecting device for such an electrical connector includes a housing having a fitting opening for the first connector, a cover pivotally connected to the housing and having an anchoring portion engageable with an engaging portion of the housing, and a block for mounting the second connector thereon.

Abstract: A surface mounting method for mounting an electronic part having a great number of contacts onto a circuit board. A jig provided with dummy contacts is prepared whose size, number and arrangement are substantially the same as those of contacts of an electronic part to be mounted on a circuit board. The dummy contacts of the jig are then fitted with mating contacts which are to be fitted with the contacts of the electronic part. Thereafter, the jig provided with the dummy contacts fitted with the mating contacts is mounted onto the circuit board at a predetermined position thereon. The mating contacts are then mounted and fixed onto the circuit board. The jig is then removed from the circuit board. The contacts of the electronic part are then fitted with the mating contacts fixed to the circuit board. As an alternative, double ended socket contact members are prepared, each having socket contacts on both ends.

Abstract: An electrical connector for a coaxial flat cable, includes pairs of contacts, each consisting of signal contacts and ground contacts and an insulating body for securely holding the contacts. Connection terminals of the pairs of the contacts are arranged in every pair in a row in a flat plane so that the signal contacts and the ground contacts are alternately arranged. The contact portions of the signal contacts and the contact portions of the ground contacts are arranged in every pair in one row and also the other row. The contact portions of the signal contacts of two adjacent pairs are arranged in different rows and the contact portions of the ground contacts of the two adjacent pairs are arranged in different rows. In another aspect, the contact portions of the pairs of contacts of odd numbers and even numbers are arranged in every pair in one row and also in the other row, respectively, so that the signal contacts and the ground contacts are alternately arranged.

Abstract: When an electronic card is inserted into the device, a first reject plate is pressed to elongate first and second coil springs to anchor the card. When no writing or reading ROM and RAM of the card, electric current instantaneously flows through a solenoid to cause a stopper stopping a second reject plate to rotate through a slight angle so as to disengage the stopper from a front end of the second reject plate. As a result, the second reject plate is depressed by the second coil spring. At the same time, a reject arm provided on the second reject plate moves a reject oblique surface of a card latch to move the card latch through a slight angle to lower a card guide, so that the card is pushed by the first coil spring out of the device. In this manner, the card is not pushed out during writing or reading and hence contents of the card are not damaged. A solenoid requires only a force for moving the stopper through a small distance. The small solenoid and a little power are sufficient to operate the device.

Abstract: An electronic card receiving device includes a card holder forming a card receiving space in the device for receiving an electronic card, a card latching mechanism for holding the electronic card in position in the card receiving space formed by the card holder, a contacting mechanism for electrically connecting the device to contacts of the electronic card held in position, and a card pushing mechanism for disconnecting the device from the electronic card and pushing it out of the device. The card pushing mechanism comprises a first ejecting plate and a second ejecting plate slidable in directions of inserting and removing the electronic card. The first ejecting plate comprises an abutting portion for applying a force to an inserted electronic card to push it in the direction of removing the card.

Abstract: A drip-proof connector is used in connection between electric cables or the like and electric and electronic appliances such as cameras for televisions, servomotors for machine tools and the like. An insert of the connector is adapted to abut against an inwardly extending annular flange provided on an inside of a connector shell. With this arrangement, the drip-proof connector is simply and easily assembled or disassembled in fields without using particular tools and has a sufficient drip-proof property.

Abstract: A shuttered card-edge type IC card including a base having springs therein and a circuit board, a shutter and a cover provided in succession on at least one surface of the base. The base is formed with guide grooves and guide and spring receiving grooves. The springs are located in the guide and spring receiving grooves to close the shutter. The shutter is provided with pawls to be fitted in the guide grooves, respectively, for guiding the pawls in the guide grooves. The shutter is further provided with spring bias plates to be fitted in the guide and spring receiving grooves, respectively, for guiding the spring bias plates in the guide and spring receiving grooves and biasing the spring bias plates by the springs located therein. The connector comprises ridges located corresponding to the guide grooves of the base of the IC card and to be fitted in the guide grooves. The shutter of this IC card is not easily opened even if any member contacts the card in carrying or using it.

Abstract: A multi contact connector includes a ground terminal block and signal and power source terminals connected with tape wires. Bare wires of the tape wires connected to the signal and power source terminals are provided with roundabout portions respectively to form slacks in the bare wires. With this arrangement, when external tensile forces act upon the connector, the slacks prevent disconnection of bare wires for signal and power source terminals indispensable for operation of the connector, even if a few bare wires among a number of bare wires connected to the ground terminal block are disconnected.

Abstract: A fiber optic connector, especially for multiple-core fiber optic cables, in which a ferrule (2), mounted in a ferrule insert (3), and adapted to receive the optical fiber (P), is provided in a plug (A,B). An adaptor (C) is provided for receiving the plug, and includes a holding sleeve (11) which is retained in an insert (10). A split sleeve (12) is mounted in the holding sleeve (11) for receiving the ferrule (2). A terminal part (11b) of the holding sleeve protrudes from the surface of the insert (10) and is snugly received in an insertion recess (14) provided at the forward end of the ferrule insert (10). The terminal part (11b) enters recess (14) after the ferrule (2) has entered the split sleeve (12) at the time of connection of the plug and adaptor.

Abstract: An electronic card connecting circuit comprises a first contact pin for earthing a ground terminal of an electronic card, a second contact pin for electrically contacting the ground terminal to detect the ground terminal being earthed by the first contact pin, and detection control means including an active element which detects the second contact means being connected through the ground terminal to the first contact pin and controls a power source circuit to supply power to the electronic card. With this arrangement, when the first and second contact pins are in contact with the ground terminal of the electronic card, the detection control means detects the second contact pin being earthed to produce a control signal to apply power of source to the electronic card. In this manner, before the ground terminal of the card is earthed, the power source is prevented from being connected to the electronic card.

Abstract: A connector is provided with lock means for locking a plug connector and a receptacle connector constituting the connector, which lock means includes a holding aperture having insert slot formed in locking ear located at each end of the plug connector and a locking member having a loop lock portion larger than the holding aperture and secured to a mounting lug at each end of a shield of the receptacle connector. The lock means comprises upstanding brackets being integrally formed with a mounting ear of each end of the shield, each the upstanding bracket having an insert aperture in opposition to that of the mating upstanding bracket for a mounting leg of the locking member and upper corners, on both sides of the insert aperture, being bent to oppose to similarly bent upper corners of the mating upstanding bracket to form a V-shaped recess.

Abstract: A connector for memory cards includes a connector housing having an opening for receiving the memory card and at least one contact which contacts a connecting portion of the memory card inserted in the opening to connect the card to a computer circuit. According to the invention, the contact is arranged so as not to be in contact with the connecting portion of the memory card and there is provided a contact operating plate slidably movable in the connector housing to bring the contact into contact with the connecting portion of the memory card when the contact operating plate has moved toward said contact. The housing further comprises an operating lever pivotally connected thereto and having one end inserted into an aperture formed in the contact operating plate such that upon pivotally moving the operating lever, the contact operating plate is slidably moved in the housing.

Abstract: A shielded electrical connector in which the shield cover is formed as two U-shaped parts, each of which includes an integral clamping portion for clamping with a shielded connector. The clamping portions are connected to the cover parts by leg portions. An insulator containing electrical contacts is sandwiched between the cover parts after the cable is attached to the contacts. The cover parts are compressed together, following which the clamp portions are clamped about the cable to provide electrical connection between the cable and the shield cover.

Abstract: This invention relates to the field of electrical connectors, and particularly concerns electrical connectors with multiple contacts requiring keying of the mating connector parts. With prior art devices, when more than one connector pair is used in a system, different connector parts must be chosen which have a different keying configuration for the key and groove. With another prior art device, which uses a single type connector part, it is necessary to sacrifice one contact position in the connectors. The present invention overcomes the deficiencies of the prior art noted above by providing a keying device which permits manufacture and production of a single type of male or female connector part and yet does not require the sacrifice of contact positions within the connector parts to effectuate the keying.

Abstract: An improved connector for terminating flexible parallel conductors in which a male part has a length of distal surface about which an end of a flexible group of parallel conductors is bent. The male part, with the group of parallel conductors bent thereabout is inserted into a female part having a closed slot therein and a plurality of contacts along one of the walls thereof. Upon mating of the two connector parts, the contacts of the female part electrically engages respective ones of the parallel conductors. Various means are provided for keeping the conductors aligned during the mating action and latch members on both male and female parts cooperate to releasably secure the two parts together.

Abstract: A contact element of an electric connector to be mated with a flat flexible film circuit board. The contact element affords a good electrical connection and also easy disengagement of the circuit board by providing a semi-conical projection on the end of its spring portion and by providing a slant surface from the conical projection to an end of the spring portion.