NOISE REDUCTION DEVICE OF A LINEAR VIBRATOR, CAPABLE OF THE REDUCTION OF THE NOISE WHICH IS GENERATED BY THE MOVING PART BEATING A CAST

摘要

PURPOSE: A noise reduction device of a linear vibrator, capable of the reduction of the noise which is generated by the moving part beating a cast, is provided to suppress the service life reduction due to abrasion by supplying power to a coil terminal without abrasion.;CONSTITUTION: A noise reduction device of a linear vibrator comprises a case(120), a permanent magnet(150), a coil(140), a moving part(130), a circuit board(180), and a spring(132). The permanent magnet and coil are installed in the case with a fixed space. A mass body(131) of the moving part is moved between the coil and the permanent magnet using electro-magnetic power. The power source is provided to the circuit board from the outside of the case. The springs are arranged between the moving part and case. A noise reducing member(260) or a vibration guide vertically applies elastic force to the direction meeting with the movement direction of the moving part at a tight angle. When the moving part has reciprocating motion, the noise reducing member or the vibration guide minimizes the movement at right angle to a reciprocating direction.;COPYRIGHT KIPO 2011