Matsushita Electric Works, Ltd.

Takao Sase

Koji Yamashita

Koji Ikeda

Shinji Morino

Hirohisa Okuno

Masahiko Amano

Yoshihiro Tanigawa

Yoshiaki Ueno

Haruhiko Hyosu

Koji Matsushita

A connector A includes a plurality of conductors. Each conductor consists of a contact 1, a terminal piece member 2, and a connecting conductor 3 connecting the contact 1 with the terminal piece member 2. The conductors are respectively held on a body 10 of the connector. The connecting conductors 3 are arranged in three layers in such a position relationship that can prevent them from short-circuiting each other and also can prevent a crosstalk from being produced between them. In this structure, the connecting conductors 3 are arranged in two or more levels, which makes it easier for the connector to be designed for prevention of the crosstalk when compared with a structure in which the connecting conductors 3 are arranged in one plane.

Connector

A modular jack telephone type connector has a housing which is associated with a carrier on which metal conductors are mounted on a top surface of the carrier, a wire positioning fixture which has wire openings for inserting electrical wires and a cavity for receiving terminals of the conductors and is supported in a hole on the top carrier surface allowing the fixture to move vertically in the hole with respect to the carrier, vertical fins which are mounted on the carrier mates vertical grooves which are provided on an opposite side of the wire openings of the fixture for additional secure positioning, a lever which is pivoted at the housing, rotating toward or away from the carrier, and coupled to the fixture via an interlock mechanism in order to transmit a rotational lever motion to the vertical fixture motion. As the lever rotates toward the carrier and pushes the fixture downward, wires inserted into the fixture meets precisely terminals through the cavity of the fixture for insulation displacement electrical contacts without using special termination tools.

Lever modular jack telephone type connector

A balanced-to-unbalanced transformer for interconnecting a balanced signal transmitted on a balanced cable and an unbalanced signal transmitted on an unbalanced cable through a transformer. Common-mode impedance is reduced by grounding a center point of two or more impedance elements between signal lines on the balanced cable side of the transformer to a signal circuit ground or a frame ground on the unbalanced cable side of the transformer.

Balanced-to-unbalanced transformer

Growing community of inventors

Kadoma, Japan

Takao Sase