| 摘要 |
PURPOSE:To improve meshing properties by a method wherein second shaft, having a contact, is arranged so as to be borne by the inner circumference of first shaft, formed integrally with a joint part, and vacuum is generated between both shafts to attenuate the energy of a plunger when the second shaft is moved rapidly. CONSTITUTION:The second shaft 9, mounting the movable contact 10, is borne by the inner circumference of the first shaft 6, formed integrally with the joint part 6a of a lever 4. When a magnet switch 3 is operated and only the second shaft 9 is moved by the rapid movement of the plunger 7, a space A is produced at the inner diametral part of the first shaft 6 and a high vacuum is generated, therefore, the energy of the plunger 7 is attenuated highly and sure meshing may be obtained without closing a main contact 13 before the driving spring 8 is deflected and a pinion 2a collides against a ring gear 5. |
