| 摘要 |
PROBLEM TO BE SOLVED: To keep strength and durability and to provide a small-sized and simple structure by bearing two auxiliary arms projectingly provided from an outer shell bearing and a core bearing by a bearing part and projectingly providing a joy stick from an intermediate bearing. SOLUTION: The core bearing 16 is rotatably supported through a supporting pin 16a inside the intermediate bearing 13 and a pair of second auxiliary arms 17 are projectingly provided in a direction for orthogonally crossing a first auxiliary arm 10 from the core bearing 16 through a through-hole 13a provided on the intermediate bearing 13. The second auxiliary arms 17 are supported by a bearing part 7 through a second guiding oblong hole 12 provided on the outer shell bearing 9 and the deformed part of the rotary shaft 8d of a potentiometer 8b is fitted to a deformed attaching hole 17a provided on one of the second auxiliary arms 17 so as to be rotated together. When the joy stick 14 is pushed in the direction of the first guiding oblong hole 11 of the outer shell bearing 9, the second auxiliary arms 17 are rotated and the rotary shaft 8c of the potentiometer 8a is rotated. |
