| 摘要 |
PROBLEM TO BE SOLVED: To provide an operation part of electric/electronic equipment capable of easily setting and exchanging a key top without detaching a case of a printed board. SOLUTION: The case 2 is provided with a key top hole 6a of a diameter slightly larger than the diameter of a pressurizing shaft 7 of the key top 3 composed of an elastic body of rubber material or the like, the periphery of the upper surface side of the case 2 is conically recessed so as to be inclined downwards from the outer peripheral side to the side of the key top hole 6 by a dimension corresponding to the operation stroke of a key switch 5 and a tapered surface part 2a is formed. The diameter of the tapered surface part 2 is made to be a diameter slightly smaller than the outer diameter of the key top 3. The pressurizing shaft 7 is provided with a wedge part 10 to be engaged with the edge of the key top hole 6a and locked to the back surface of the peripheral edge of the key top hole 6a. When the pressurizing shaft 7 is inserted to the key top hole 6a, since the wedge part 10 is elastically deformed and moved over the edge of the key top hole 6a, it is attached from the top of the case 2. It is detached just by being strongly pulled out. |
