| 摘要 |
A speaker without yoke is provided to achieve slimness and compactness, light weight and thin shape of the speaker, by installing a permanent magnet in the front and rear of a plate. A plate(140) has an N pole installed in a frame(110) electrically connected to an electronic device. A voice coil(150) is installed between the plate and the frame. A diaphragm(130) vibrates as being connected to the voice coil. A damper(120) is connected to the voice coil in order to buffer vibration. A permanent magnet(160,161) has an N pole and an S pole in the front and rear of the plate. A number of heat dissipation holes are punctured in the frame of the speaker. |
