Patent ID: 6184480
Filing Date: 2001-02-06
Classification: H01H

Abstract:
A revolving operation electronic component comprising:a bearing having a round hole in the center;a revolving member having in the cylindrical portion a polygonal opening for a section upper than a middle ring-platform, which ring-platform being perpendicular to central axis of the round hole of the bearing, and a central opening, whose diameter is greater than that of said polygonal opening, for a section lower than the middle ring-platform, said revolving member being supported at the cylindrical portion by said round hole of said bearing in a freely revolving manner and attached on the flat bottom area locating at a level lower than the middle ring-platform with a contact board;a substrate, which holds slider contacts that keep elastic contact to said contact board, provided to encounter said revolving member;an operating rod comprising a polygonal portion having a polygonal horizontal cross section and curved surfaces along an axial direction of the operating rod, which curved surfaces being engaged with said polygonal opening of the revolving member for making the same revolution together with said revolving member while it is free to move up and down independently, a pushing portion located below said curved surfaces, and an operating section located above said curved surfaces; anda movable contact plate of domed shape which provides upward pressure to said pushing portion so that the upper surface of said pushing portion keeps an elastic contact against the middle ring-platform of the revolving member.