Patent ID: 9608502
Date: 2017-03-28
CPC Classifications: A63F,G08B,H02K

Claim:
1. An impactive vibration generating apparatus comprising: a shaft; a rotary unit, wherein the shaft is arranged at its center, a magnet is rotatably arranged around the shaft and the rotary unit rotates over 180 degrees, but less than 360 degrees; a fixing unit for supporting the shaft, wherein at least three wound-coils are arranged with an equal spacing to face said magnet and air gaps are formed between the magnet and the coils, thereby to form a magnetic flux for generating a rotational force in the air gap; a circuit board provided in the fixing unit; a magnetic pole location detection element for detecting a magnetic pole of the rotary unit to control current of the coils, wherein the magnetic pole location detection element is provided in the circuit board; a protrusion attached to one part of the rotary unit and rotating over 180 degrees, but less than 360 degrees; and a stopper for impacting on the protrusion to generate an impactive vibration, wherein the stopper is arranged so as not to directly contact the rotary unit; wherein the magnitude of the impactive vibration is in proportion to the weight and the rotation speed of the rotary unit, wherein the number of the impactive vibration is adjusted by the number of revolution of the rotary unit, wherein the frequency of the impactive vibration is controlled by controlling the generation frequency of the impactive vibration through the adjustment of the collision frequency of the stopper and the protrusion.