| 摘要 |
<p>PROBLEM TO BE SOLVED: To allow easy assembling using a simple configuration and permit a push button to sustain a long period of use. SOLUTION: A coordinates information input device 10 is composed of cases 12 and 13 to accommodate balls 11 for entry of coordinates information in such a way that part of the ball surface is exposed to the outside, a push button 14 installed in such a way as exposed at the case oversurface on one side, a switch 15 installed inside the case and operated by the push button, and a sensing part to sense the ball rotating amount and rotating direction, wherein the internal end 14b of the push button 14 is secured to a boss 13b furnished inside the case. This internal end part 14b of the button 14 is equipped with a mounting hole 14e extending in the longitudinal direction, and the button 14 is supported swingably by fitting the mounting hole on a projection 13d which is furnished at the tip of the boss part and has a mating section shape.</p> |
