| 摘要 |
A vibration mechanism includes a repulsive magneto-spring made up of at least two permanent magnets 22, 24, 36, 38. In this vibration mechanism, the spring constant of the magneto-spring is set to approximately zero by appropriately selecting the locus of motion of one of the permanent magnets 22, 24, 36, 38 relative to the other. <IMAGE>
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