Patent ID: 9246375
Filing Date: 2016-01-26
CPC Classification: B06B,H02K,Y10T

Claim Text:
1. A vibration generator, comprising: a casing that is open on one surface thereof; a weight provided inside the casing and configured to vibrate; a spring mounted inside the casing; a magnet inserted and installed through a first opening formed in the weight; and an air-core coil that is placed in such a way that the coil is spaced apart from the magnet by a predetermined gap, wherein a yoke having magnetism is installed on an opposite side surface facing the air-core coil in the magnet, wherein the spring is mounted to the casing at a first end thereof and is mounted to the weight at a second end thereof, and wherein the air-core coil is mounted to a base that is assembled so as to close the open surface of the casing, wherein the weight comprises a first weight having a depression and a second weight having a second opening, wherein the magnet is seated in the depression of the first weight and is inserted into the second opening of the second weight, with an interposition of a metal yoke.