DAMPER STRUCTURE OF SPEAKER

摘要

PURPOSE: A damper structure of a speaker is provided to transfer vibration caused by magnetic force induced in a voice coil without distortion by installing a damper inside a bobbin. CONSTITUTION: A permanent magnet(20) is fixed in lower part of a frame(10) having a horn shape. A bottom plate(30) is fixed at the center of the permanent magnet by a certain interval. A vibration plate(40) is installed inside the frame. A bobbin(50) is fixed to the lower center of the vibration plate. The bobbin is movable up and down in the space between the permanent magnet and the bottom plate. A voice coil is reeled in the outer circumference of the lower part of the bobbin.