| 摘要 |
PROBLEM TO BE SOLVED: To make a common casing conformable to specifications differed in arrangement or number of switches in an operation part by integrating an operation part, a movement arresting member, and an operation button to a base part formed commonly regardless of the type of operating devices, and making a prescribed number of operation buttons usable. SOLUTION: Block pins 10, 11 are provided on a casing 1, and throttled parts are provided in the root parts of the block pins. In a specification of using a first auxiliary button 4, only the block pin 10 can be cut, and the block pin 11 is left as it is. Thus, when the first auxiliary button 4 is pressed from above, a projection 4a presses a switch 9 so that it can be ON. In a specification of using only a second auxiliary button 5, only the block pin 11 can be cut, and in a specification of using both the first and second auxiliary buttons 4, 5, both the block pins 10, 11 can be removed. |
