| 摘要 |
PROBLEM TO BE SOLVED: To make a unit slidable in a unit drawing device for a switchboard and to give no restrain to a storing space, by preventing a guiding mechanism that determines a position from projecting into the inside of the unit. SOLUTION: Guiding pieces 16 are provided, which projects downward from the both side frames 13 of a unit 6. Guiding grooves 5 fitting to these guiding pieces 16 in such a way as to be slidable are formed on a shelf 2 of a unit chamber 3, and are structured to determine the position of the unit 6, by contacting the guide pieces 16 to stop them against the movement direction of the unit 6. This structure enables the guiding mechanism, consisting of the guiding pieces 16 and guiding grooves 5, to be provided at a position outside the unit 6. As a result, it is made possible to use effectively the storing space of main circuit devices inside the unit 6 without causing any restriction, and moreover it is possible to obtain a stable sliding action with a simple structure. |
