| 摘要 |
<p>PROBLEM TO BE SOLVED: To improve operability by providing an operation interface, in accordance with an operating key fitted to and displayed on the surface of an operation panel. SOLUTION: When an operator operates buttons 120a, pressing a boss part 121a in an arrow direction makes a spring part 122b be pushed by a flange part 121b then gradually be elastically deformed on, and concurrently makes the base 1a of a touch panel 10 be pushed by a protruded part 121c then gradually be elastically deformed. Since the folded part of the spring part 122b is elastically deformed suddenly and considerably at some stage in a direction reverse to a folded direction, at that time, an operator feels a sure operational feeling (a click feeling). Since the conductive film of the respective bases 1a and 1b of a touch panel 10 are contacted, a switch is turned on, or a picture plane is changed by a directive applicable to an operating key displayed as a picture image on a display 5. When the operator releases pressing the boss part 121a, the elastic deformation of the spring part 122b is restored to part the protruded part 121c from the base.</p> |
