| 摘要 |
PURPOSE: A principal axis rod for the drive of the cell switch of distribution panel is provided to minimize impacts to a cell switch by arranging a compressed spring between a lower rod and an upper rod. CONSTITUTION: A principal axis rod(30) comprises a lower rod(31), an upper rod(32), a compressed spring(34), and a support shaft. The compressed spring is combined between the lower rod and the upper rod. An insertion groove is formed in the lower part of the upper rod. The support shaft is formed in the upper end part of the lower rod. The support shaft passes through the compressed spring. The support shaft is inserted into the insertion hole of the upper rod. A tightening screw(32') is formed in the upper end part and the lower end part of the principal axis rod. |
