| 摘要 |
PURPOSE:To reduce the number of steps of drilling a threaded hole by projecting a bolt upward from a holder for holding a casing base, and engaging it into the threaded hole at the opening end of the casing via a through hole of the base. CONSTITUTION:An electric device is enclosed by a cylindrical casing 1 opened at the lower portion and a casing base 2 for closing the opening 1a, the casing 1 is integrated with the base 2 by screws 4, and a holder H is provided between the casing and a casing mounting base 13. In this case, a clamping bolt 4a is projected upward from the holder H, a through hole 2b is formed at the corresponding position of the base 1, a threaded hole 1b is formed at the casing 1, and a clamping bolt 4a is engaged within the hole 1b. Thus, it is not necessary to form a threaded hole at the base 2. |
