| 摘要 |
PURPOSE: A diaphragm is provided to easily facilitate a manufacturing and an assembly of the diaphragm. CONSTITUTION: A Mylar diaphragm includes a dome portion having a planar shape(6). A recessive hole(7) is provided by an installed iron plate(8) therein. A permanent magnet(9) is installed in a center of the iron plate vibrating the diaphragm to generate a sound. The iron plate serves as a vibrating yoke and a plate. A size of the permanent magnet is smaller than that of the iron plate for the weight of the permanent magnet to be distributed over an overall surface of the iron plate to reduce a weight of the permanent magnet. The diaphragm supplements an operation of the conventional Mylar diaphragm. |
