| 摘要 |
PURPOSE:To aim to enhancing the working ability and safety, by forming an embossed section or a bent section for preventing a belleville spring from coming off, in a connecting plate of an insulating bus duct, etc. CONSTITUTION:A connecting plate 1 is formed with embossed sections 6 and bent sections 7 having a height substantially equal to the thickness of a belleville spring 2, at positions where it is circumscribed to the outer diameter section of the belleville spring 2. The belleville spring 2 is set along these positions, and is then superposed thereover with a retaining plate 3 which is fixed to a duct connecting plate 1 by rivets 4. Further, the retaining plate 3 is formed with a poligonal shape hole 8 in which the head section 51 of a connecting bolt is fitted, thereby it is possible to prevent the connecting bolt from rotating. |
