| 摘要 |
PURPOSE: A speaker of a mobile telephone is provided, which enables a diaphragm to move with a large amplitude by reducing an air density in the inside of an air path, and thus increasing a sound pressure. CONSTITUTION: A frame(11) has a space part(11a) in its inside, and has an assembly hole(11b) on a bottom surface of the space part, and has a number of spaces(12) on a bottom. A wave type diaphragm(13) is adhered to a top of the frame, and a yoke(14) is supported by being combined to the assembly hole of the frame and has a penetration hole. A magnet(15) is attached to a top surface of the yoke, and has a penetration hole to be connected to the penetration hole of the yoke. A top plate(16) is attached to a top surface of the magnet and has a penetration hole to be connected to the penetration hole of the magnet. A voice coil(17) is attached to the bottom of the diaphragm and is arranged adjacently to the magnet. And an air guide plate(18) is combined to the space of the frame.
|
