| 摘要 |
PROBLEM TO BE SOLVED: To vibrate a key top without requiring electrical connection. SOLUTION: A magnet is attached to the key top, and the key top is vibrated when the magnet is vibrated by magnetic vibration due to an alternating magnetic field of an electromagnet mounted to the lower/side face of the key top. Alternatively, the magnet is sealed in a hollow arranged inside the key top, and when the magnet is vibrated inside the hollow by means of alternating magnetic field to collide against the hollow inside wall, vibration is transmitted to the key top. COPYRIGHT: (C)2004,JPO&NCIPI
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