Abstract: A terminal unit having a metal terminal for holding an electrically conductive wire in cooperation with a plate spring, wherein a push button 6 is operated in one direction to rotatably disengage one end 4a of the plate spring 4 from the metal terminal 3 against the spring action of a compression coil spring 5 which is in engagement with the opposite end 4c of the plate spring, the plate spring being bent at the intermediate portion thereof to provide an attaching portion 4b with which the plate spring may be rotatably supported on a support pin 21. In particular, the push button, the plate spring and the compression coil spring are used in combination with the principle of a lever so that the plate spring any be disengaged from the metal terminal with a relatively small force applied to the push button.

Abstract: A terminal structure is disclosed, wherein a metal plate is turnable at one end thereof with respect to a metal terminal, and a torsion coil spring 23 has one end normally pressing the metal plate so that the metal plate may be turned away from the metal terminal when the terminal structure is operated to insert an electrically conductive wire thereinto and so that the metal plate may be turned towards the metal terminal when a force is applied to the electrically conductive wire to pull out the same from the terminal structure, thereby to press the electrically conductive wire against the metal terminal with a stronger force of the torsion coil spring, thus securing the electric conduction between the metal terminal and the electrically conductive wire while allowing the electrically conductive wire to be connected and disconnected to and from the terminal structure with a light operating action.