| 摘要 |
PURPOSE:To prevent generation of a rolling phenomenon of a voice coil, and an adherence failure in case of incorporating into a speaker, by radially arranging plural cells surrounded by a grid, and making the cells in a corrugation shape to the redial direction. CONSTITUTION:Plural cells surrounded by a grid, for instance, the cells 3a of a honey-comb shape are arrayed radially from the center, and its radial direction is formed to a corrugation shape. And, for instance, the cells 3a are made smaller as they get near the inside circumference, and are made larger as they get near the outside circumference. According to said constitution, the damper 3 is made to have a uniform directivity in the circumferential direction, and it is possible to obtain an excellent damper which scarcely causes a problem of an adherence failure in case of incorporating into a speaker, and also a rolling phenomenon. |
