| 摘要 |
PROBLEM TO BE SOLVED: To provide a vibration plate in accordance with the restriction of mechanical strength and vibration characteristic at the same time regardless of the length of a long piece.SOLUTION: A vibration plate for music box is a vibration plate 1 for the striking mechanism of a music wrist watch or a music box. The vibration plate 1 includes at least two portions created by at least two kinds of materials. Each of the portions is connected to the other portion. A first portion 10 among these portions forms sets 11, 12, and 13 of first slender long pieces created by a first material M1 so as to generate a sound within a first frequency range. At least a second portion 20 among these portions forms sets 21, 22, and 23 of second slender long pieces created by a second material M2 so as to generate a sound within a second frequency range.SELECTED DRAWING: Figure 2 |
