Connection terminal device

Abstract

A connection terminal device is provided with a terminal block and also with an element body which has an electric wire insertion hole and contains the terminal block. The terminal block is provided with a terminal plate and a lock spring. The terminal plate is provided with a contact section which has a contact surface which makes contact with the side surface of the electric wire inserted in the element body through the electric wire insertion hole. The lock spring is provided with a center section, a lock section, a contact section, and a connection section. The center section is provided so as to face the contact surface. The lock section is provided so as to extend from a first end of the center section, said first end being located close to the electric wire insertion hole, toward the contact surface of the contact section, and the lock section is configured so as to hold the electric wire in cooperation with the terminal plate. The contact section is disposed so as to be in contact with a surface of the contact section, said surface being that which is on the reverse side of the contact surface. The connection section is configured to connect integrally to a second end of the center section, said second end being located away from the electric wire insertion section.

Description

technical field [0001] The invention relates to a quick-connect terminal device. Background technique [0002] For a long time, based on the purpose of making it easy to connect wires to wiring devices such as switches and sockets, or to ensure connection reliability by making connections uniform, so-called quick-connect terminal devices (also called as screwless terminal units.). [0003] A conventional quick-connect terminal device includes a substantially U-shaped terminal plate and a lock spring arranged inside the terminal plate. The locking spring is integrally formed by a central piece abutting against one leg of the terminal board, a pressing piece extending in an S-shape from one end of the central piece, and a locking piece extending in a J-shape from the other end of the central piece. . Furthermore, when the wire (conductor) is inserted between the other leg of the terminal board and the pressing piece and the locking piece, the wire is pressed against the ter...

AI Technical Summary

Problems solved by technology

[0005] However, in the known quick-connect terminal device described in Japanese Laid-Open Patent Publication No. 2002-151172, the locking spring is not fixed to the terminal board, and the posture can be changed relatively freely.

Therefore, when the wire is inserted, the locking piece is drawn into the side of the wire, and the pressing force by the pressing piece may not be sufficiently applied to the wire, which may reduce the contact reliability between the terminal board and the wire.

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