| 摘要 |
PURPOSE:To prevent the fretting and to prevent the securing between the movable plate and the supporting section, by providing a weight for statically ballancing with the firing signal generator to be fixed at the portion of a movable plate. CONSTITUTION:A ballance weight 6 is provided on a movable plate 2 to statically ballance with the firing signal generator 5. The weight of said weight 6 is selected such that the moment functioning on the movable plate 2 by the firing signal generator 5 and the moment due to the weight 6 will be cancelled each other. Since such force as inclining against the supporting member 11 will not function on the movable plate 6, the pressure type firing timing controller will operate to rotate the movable plate smoothly around the supporting section. Since the complicated vibration will not occur, the fretting is prevented. |
