Electric coil and in particular electromagnet arrangement comprising a coil spool and a coil casing

Claim 1

An electrical coil and in particular electromagnet arrangement of the type comprising a coil spool which includes a cylindrical coil-carrying body and at each end a flange, a sleeve-shaped coil casing enclosing said coil and a device for the outer electrical connection of the arrangement which comprises terminal connectors associated with one of said flanges and provided each one with a pin connected to the coil and with an outer connection pin, wherein the improvement consists in that the coil casing is coaxially positioned on the spool and is adapted to be positioned through axial fitting on the cylindrical body, in that the terminal connectors are anchored within the flange adjacent to the forward end of the casing by an anchoring lug portion extending into the flange from the periphery thereof, those portions which form the connecting pins are folded back so as to extend in parallel relation to the centre line axis of the arrangement from the plane of the anchoring flange in the direction of the other flange so that those portions which form the outer connection pin be located at a distance from the axis of the arrangement which is greater than that of the outer peripheral surface of the casing and in that the latter carries at its end adjacent to the anchoring flange a wall which extends at right angles to the axis of the arrangement and exhibits axial holes through which the outer folded back pins extend upon the fitting of the casing onto the cylindrical body.