| 摘要 |
PURPOSE:To eliminate a projected part and facilitate the handling of a unit during walking on a main body by a method wherein the surface of the main body is made smooth. CONSTITUTION:A box-like terminal part 3 having a power supply line 2 is arranged at the corner of a rectangular main body 1 and the upper surface 3a of the terminal part 3 is arranged to be coplanar with the surface 1a of the main body 1. Therefore, the lower part of the terminal part 3 is projected downwardly from the rear surface 1b of the main body 1. However, with this arrangement, it has some advantages that the surface 1a of the main body 1 is made smooth, the foot toe may not be struck and no pain is felt even if the surface is depressed. |
