| 摘要 |
PROBLEM TO BE SOLVED: To provide a series unit capable of operating a switch knob smoothly, even if a switch knob for operating the knob of a switch is provided.SOLUTION: A series unit 1 includes a rectangular parallelepiped case 10, in which a circuit board 16 provided with a changeover switch 17 is housed. The changeover switch 17 can be operated by a switch knob 15 from the front of the case 10, and the rear side of the switch knob 15 is holding the knob of the changeover switch 17. A groove-like rail is formed in the case 10, in the sliding direction of the switch knob 15, and when a sliding portion projecting from the front of the switch knob 15 is inserted into the rail, and the front end of when the switch knob 15 is slid, the sliding portion slides in the rail. |
