Screw terminal
AssigneeSchneider Electric Industries SAS
InventorsJosé Garcia, Serge Paggi, Hervé Grillot, Denis Bassenonville
Life of this patent
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Abstract
Screw terminal connected to a conductor device mounted on a piece of electrical equipment to connect at least one conductor, composed of a connection cage and a screw, the cage and/or the screw being movable inside the terminal housing. A pressure device (30) composed of a head plate (31) and a pressure plate (32) connected to each other by two elastic symmetrical wings (33, 34) designed to store torque energy, the head plate being convex in shape and attached by the screw neck. The pressure plate can be applied against a conductor or against the conductor device on the equipment, and the elastic wings are concave in shape, with a concavity that is reduced as the pressure on the screw is increased.
Claims8
A screw terminal comprising:
- a connection cage having a tapped hole;
- a screw having a head, a neck, and a threaded part for threaded engagement with the tapped hole, wherein the cage threadingly travels along the screw while the screw rotates, and the cage and/or the screw is movable inside an equipment housing;
- and
- a pressure device comprising a head plate and a pressure plate connected to each other by two elastic wings for storage of torque energy, the head plate for compression by the head of the screw and the pressure plate for application of pressure against a conductor, wherein:
- the two elastic wings are symmetrical in relation to an axial plane of the screw, and are concave such that centers of said wings are closer to the axial plane of the screw than ends of said wings, and
- the head plate is compressed by the head of the screw to place the pressure device symmetrically in compression when the screw is tightened.
Dependencies are inferred from the claim text.