Frictionless switching device for opening and closing an electrical line, with improved operating accuracy

A switching device for opening and closing an electrical line, comprising:

• two fixed contact terminals separated from one another,
• an operating member, comprising a contact piece adapted to be moved axially between a closed position in which the contact piece is applied simultaneously to the two contact terminals, connecting them electrically, and an open position in which the contact piece is separated from the two contact terminals,
• at least one flexible strip comprising at least one end part attached to a fixed support, the flexible strip or strips being adapted to exert a return force on the contact piece to return it from its closed position to its open position in the absence of a motive force on the operating member,
• wherein the operating member comprises two electrically insulating pusher arms, spaced apart from one another and each attached to an end part of the contact piece, and
• wherein each flexible strip comprises two other end parts, each attached to one of the two push arms or to a part of the operating member that is itself attached to, or forms an integral part of, one of the pusher arms;
• wherein the device comprises an electrically conductive closure plate, the contact piece of the operating member and the two contact terminals being arranged on one side of said closure plate, while a greater part of the two pusher arms, together with the flexible strip or strips and the fixed supports, are arranged on the other side of the closure plate;
• wherein the closure plate comprises two openings, each allowing the passage and frictionless axial movement of one of the two pusher arms.