| 摘要 |
PURPOSE: A bone conduction hearing aid is provided to maximize the effect of the bone conduction hearing aid by using the vibration characteristic of the bone conduction hearing aid. CONSTITUTION: The expanded surface(30) is arranged in four directions on a yoke(20) to form a voice coil(40). An iron plate(60) is attached to an internal vibration board(70). The internal vibration board is fixed to the yoke by a screw. A permanent magnet(90) is attached to the upper center of the iron plate. A wave is formed by the magnetic force of the iron plate formed by the permanent magnet. |
