To provide a vertically directed vibration generator which is compact and produces little noise and is inexpensive by incorporating plural permanent magnets with it.
A substrate 14 and a top plate 18 are connected through a link mechanism 16, and a first permanent magnet 30 is fitted to the substrate 14 so as to make it horizontally, freely slidable, and also a second permanent magnet 32 opposite to the first permanent magnet 30 at the same magnetic poles thereof is fixed to the top plate 18. The first permanent magnet 30 is driven by using an electromotive actuator 28, and a load applied on the top plate 18 is supported by load supporting means 34, 36, 38, 40,.... And the first permanent magnet 30 is periodically reciprocated to the second permanent magnet 32 by the electromotive actuator 28 to change the opposite area thereof, causing the top plate 18 to be vertically vibrated.
SAKAMOTO YUTAKA
SUGIMOTO EIJI
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