Ddk Ltd.

Daiichi Denshi Kogyo Kabushiki Kaisha

Kubota Corporation

Kazuyuki Ozai

Shinya Ishizuka

Akio Yamada

Hirokazu Takahashi

Tomonari Ohtsuki

Kazuhiro Sato

Hirokazu Ito

Kazuo Koike

Hitoshi Kikuchi

Hiromichi Kato

Takuya Higeta

Koichi Yokota

Masatake Takai

Takakatsu Inoue

An electric connector includes a socket connector, a bar-like plug connector to be inserted/withdrawn to/from the socket connector and a fuse. When the plug connector is inserted to the socket connector, electric conduction is established in the electric circuit via the fuse. The fuse is attached to the socket connector.

Fuse protected socket having additional attachment points

An electrical connector to be detachably fitted with a mating connector, including a plurality of contacts, a housing for arranging and holding the contacts, and a shell covering the housing and forming with the housing a fitting opening for the mating connector. The shell has at least one engaging piece, and the housing has an anchoring portion at a location corresponding to the engaging piece to cause the anchoring portion to engage the engaging piece, thereby restraining the housing from being displaced in the direction opposite to the fitting direction upon fitting with the mating connector. Even being miniaturized, the electrical connector is securely positioned relative to the mating connector when fitting with it, and the housing is securely prevented from being displaced upon the mating connector abutting against the housing, thereby completely preventing any defective connection.

Electrical connector

An electrical connector detachably fitted with a mating connector includes a plurality of contacts, a housing arranging and holding the contacts therein and having guide portions for guiding the mating connector, and fixtures to be fixed to a substrate. The fixtures are made of a metal and each include the guide portion in the form of a substantially U-shape integrally formed therewith. A free end of the guide portion is provided on each of its both sides with an extending piece downwardly extending and adapted to be inserted into an inserting groove of the housing. The housing is provided with the inserting grooves at locations corresponding to the extending pieces for inserting the extending pieces, respectively, and is provided with slits, one at each of its longitudinal ends, to form holding portions having elasticity, thereby holding the guide portions of the fixtures therein. The guide portions of the electrical connector are not damaged even if being subjected to unexpected strong forces from the mating connector.

A connector includes a plurality of contacts each having at one end a contact portion adapted to contact a connecting object, at the other end a connection portion to be connected to a substrate or the like, and between the contact and connection portions a fixed portion to be arranged and held in a housing so that the contact portion is displaceable about the fixed portion as a fulcrum in a cantilevered manner relative to the housing arranging and holding the contacts. If the thickness of the housing where the contact portions of the contacts are displaceable is not more than 0.6 to 0.7 mm, the housing is provided with a protrusion formed with a hole to permit the contact portions to be displaceable in the hole, thereby ensuring sufficient contact pressures to obtain stable connection with a mating connector without unintended deformations of the contacts.

An electrical connector includes a housing, a substrate, and shielding plates. The housing has an inserting hole for the substrate, and the substrate has a plurality of signal patterns and a plurality of ground patterns alternately arranged on at least one surface of the substrate in a manner that one signal pattern is between two ground patterns. The signal patterns and the ground patterns each have a contact portion to contact a mating object and a connection portion to be connected to a cable. The shielding plates are each connected to the connection portion of the ground pattern for shielding. With this construction, the electrical connector achieves its miniaturization and reduction in crosstalk regardless of length of connected cables.

Electrical connector using a substrate as a contacting member

Electric connector

A cable connecting structure for connecting a cable including cable cores each having a core conductor and a core sheath to an electrical connector in which the leading end of the cable is peeled to expose the core conductors of the cable cores and the exposed core conductors are connected to contacts of the electrical connector. A dielectric member having air contained therein is arranged to cover at least part of the exposed portions of the cable cores of the cable. With this construction, it is possible to restrain characteristic impedances at the exposed portions of the cable cores, which tend to become higher.

Cable connecting structure for electrical connector

A connector includes a block and a required number of contacts held and fixed in the block. A plate-shaped piece made of a heat resistant and electrically insulating material is fixed to the block on that side of the contacts to which conductors are connected. The plate-shaped piece is preferably formed with grooves with a predetermined interval on that surface of the piece on which the contacts are arranged. With this construction, it is possible to provide an improved connector which is able to prevent the block from being deformed due to heating in soldering and welding when connecting conductors, and is free from any defective connection and failed insulation without raising the manufacturing and operating cost.

Connector

An electrical connector includes an elastomer in the form of a layer, and a plurality of fine conductive wires embedded in the elastomer and extending rectilinearly in vertical directions to front and rear surfaces of the elastomer. The fine conductive wires have an overall length substantially the same as or slightly larger than the thickness of the elastomer so that both the ends of the fine conductive wires extend from the front and rear surfaces of the elastomer. The electrical connector includes a flexible printed circuit board connected to the fine conductive wires. The flexible printed circuit board includes at least three electric contacts arranged substantially concentrically around and electrically connected to each of the fine conductive wires. With this arrangement, the electrical connector enables a stable inspection for integrated circuit pads in a manner which minimizes irregularities in repeatedly measured values of electric resistance and skew.

A multiconductor connector for high-speed transmission signal for connecting a plurality of paired cables includes an insulator plate having signal contacts on its upper and lower surfaces. The signal contacts are arranged in a row on each of the upper and lower surfaces to form pairs of the two signal contacts aligned with each other above and below across the insulator plate. The insulator plate has a thickness so determined that when a pair of terminal of each of the paired cables are exposed at their one ends by removing their insulating coverings and then fitted on the insulator plate without changing the initial spacing between the pair of terminals in a manner embracing the insulator plate by the pair of terminals on the upper and lower surfaces, the pair of terminals are electrically connected to a pair of the signal contacts on the upper and lower surfaces of the insulator plate. With this arrangement, good impedance characteristics at the one ends of the paired cables can be maintained.

Multiconductor connector adapted to be connected to a plurality of paired cables for high-speed transmission a signal

A misconnection-proof key comprises a substantially L-shaped block made of a hard metal including a short arm and a long arm intersecting with the short arm at right angles thereto. The long arm has at a substantially mid portion on its surface a removal preventing protrusion integrally formed therewith. A plurality of misconnection-proof keys thus constructed are used in a connector including an insulating block having a number of contacts, and a metal shell partly covering the insulating block on the side of contact portions of the contacts. The plurality of misconnection-proof keys are each inserted with the long arm into a slot formed at a predetermined position between the insulating block and the metal shell until the removal preventing protrusion is fitted in a removal preventing recess or aperture formed in the slot so that the short arm of the key extending outwardly of the slot. The connector is prevented from being connected to a wrong or improper connector not having notches corresponding to the outwardly extending short arms of the misconnection-proof keys.

Misconnection-proof key and connector using the same

An electrical connector adapted to be mounted onto a panel of an electronic appliance includes a housing and a predetermined number of contacts held and fixed in the housing. The housing includes one or more projections formed on each of an upper surface and a lower surface of the housing, and the projections are adapted to be positioned on a first side of the panel. The electrical connector also includes a block which engages the housing, and the block is adapted to be positioned on a second side of the panel which is opposite the first side of the panel. Moreover, the block includes a through-hole formed therethrough. The electrical connector also includes a fixing pin, and a portion of the fixing pin is positioned within the through-hole.

Panel mounted electrical connector movable relative to the panel

A mount of an electrical connector serves to firmly mount the connector on an electrical appliance. One connector body of the electrical connector is to be fixed to a circuit board of the electrical appliance and has a housing as its outer casing whose mating connector socket is positioned in and spaced the connector opening formed in a panel plate of the electrical appliance. The mount is constructed as a clamp holder made of a resin including a fitting portion to be fitted on the outer circumference of the housing of the connector body fixed to the circuit board. The fitting portion of the clamp holder is also to be fixed to the panel plate in the state of the fitting portion being fitted on the outer circumference of the housing of the connector body so that the clamp holder made of the resin, the housing of the connector body and the panel plate are integrally fixed to one another. In this manner, the connector body can be fixed to the circuit board and the panel plate of the electrical appliance with great stability. Even if the housing of the connector body and the panel plate are made of conductive materials, insulation between them is maintained because of the clamp holder made of the insulating resin.

Mount of electrical connector

A connection portion of a contact for use in an electrical connector or the like. The connection portion is in the form of a substantially U-shaped groove, to which is connected an exposed conductor of an electric wire. The connection portion includes on both sides bending pieces forming the walls of the U-shaped groove and asymmetrically arranged. With this construction, a relatively deep and wide groove of the connection portion is obtained even if the contact itself is small.

Connection portion of contact

An electrical connector to be connected to a cable comprises a housing having a contact receiving portion therein, plural sets of contact pairs arranged in a row in the contact receiving portion of the housing, and a shield plate provided between at least two adjacent contact pairs. The shield plate serves to prevent occurrence of cross talk as much as possible.

Growing community of inventors

Tokyo, Japan

Kazuyuki Ozai