Ddk Ltd.

Shinya Ishizuka

Kazuyuki Ozai

Akio Yamada

Hirokazu Takahashi

Kazuhiro Sato

Hiromichi Kato

Electric connector

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.

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

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 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.

Growing community of inventors

Tokyo, Japan

Shinya Ishizuka