| 摘要 |
PROBLEM TO BE SOLVED: To reduce the installation space of electric cords such as signal wires. SOLUTION: Thin wires are bundled and at least either signal wires 35 or electric supply lines 36 are arranged on the central axis. Consequently, new installation of the signal wires 35, or the like, is not required and the installation space of the signal wires 35, or the like, can be reduced. |
