| 摘要 |
PROBLEM TO BE SOLVED: To provide a piano-touch ultra-thin keyboard for a PDA having a simple structure, small key size, and having a small number of components and proper assembly workability. SOLUTION: This piano-touch ultra-thin keyboard uses key switches 10 used for executing a switch operation, by turnably mounting a key top 11 on a board 16 by interlaying an actuator and by pressing the key top 11. The keyboard is so structured that base ends 11a, 11a of the key top 11 are journaled to board-side turning supports 18a, 18a; a stabilizer 12 having its upper end turnably journaled to the lower part of a tip 11b of the key top 11 and its lower end journaled to the turning supports 18a, 18a is installed to support the key top 11 turnably about the turning supports 18a, 18a as the center; and an elastic deforming part 15 of a clicking membrane sheet 13 is pressed against by a drooped part 14 drooped from the undersurface of the key top 11 in pressing the tip of the key top 11 to connect the switching circuit. COPYRIGHT: (C)2005,JPO&NCIPI |
