| 摘要 |
PURPOSE: A multi-functional speaker with a structure for preventing deformation is provided to increase the rigidity of material by the formation of a rear cover with metal materials. CONSTITUTION: A frame(10) has mounting projections(10a,10b) formed on the front and rear surfaces of the inner circumference. A front cover(20) and a rear cover(30) are formed on the mounting projection. The front cover is formed into the shape of a ring. The rear cover protects the components positioned inside the frame. The rear cover has a planar section(31) of a circular plate shape, a lateral part(32), and an extension part(33). A vibration plate(40) is formed of complex materials of a domed macromolecular film or a multilayered macromolecular film. A voice coil(60) of a ring shape is attached to the bottom surface of the vibration plate. A vibrator(50) interactively resonates with the electromechanical power created from the voice coil, vertically. |
