| 摘要 |
1389534 Electromagnetic relays SIEMENS AG 22 March 1973 [22 March 1972] 13811/73 Heading H1N An electromagnetic relay having an armature 1 having an end 1a which is adapted to roll on a pole piece 2 and its other end arranged to move between polepieces 3, 4 has the pole faces 3a, 4a and/or the cooperating armature faces (Fig. 4, not shown) formed with convex curvature in such a position that the points of contact between the armature 1 and opposing polepieces 3, 4 occur at a distance (preferably of the way along the armature) from the rolling end to render the armature self-centering. Fig. 5 shows a polarized bi-stable relay having a U-shaped armature 11 which rolls on its closed end 11a and has bends 11c forming the convex surfaces. |
