Patent ID: 6672758
Filing Date: 2004-01-06
Classification: G04B,G04C

Abstract:
Electric switching device mounted in a case, the case including:a frame having a U-shaped recess formed by two branches of the frame, wherein each branch includes, along an first axis parallel to a base of the recess, a through passage for a stem, wherein one end of the stem is provided with a setting head disposed outside of the case, and the other end of the stem is disposed, inside the case, wherein the end of the stem disposed inside the case is positioned to act on at least three electric contacts mounted on a plate extending beyond the base of the frame, wherein an opening of the through passage located in one of the branches, by the head; is circular, wherein an inner edge of the circular opening is provided with a flange, wherein a diameter of the flange is greater than a diameter of the stem that is guided inside of the through passage by an O-ring, wherein the O-ring is housed in a groove of an annular swelling of the stem, whereas the through passage in the other one of the branches, by the electric contacts, includes at least an elongated guide contour having a width substantially the same as a width of the diameter of the stem, wherein the contour is surrounded by a circular groove that accommodates a helical spring compressed at an end by a washer abutting against a clip, wherein the clip is engaged in a groove in the stem and a surface of the clip abutts against the flange of the through passage by the head so as to allow, by acting on the head a tilting movement of one end of the stem along the elongated contour to close an electric contact located in proximity to one end of the elongated contour, and on the other hand, to allow an axial displacement along the first axis to close another electric contact.