| 摘要 |
PURPOSE:To get rid of rolling and rubbing, by making the heights of corrugations lower gradually toward the outside circumference from the inside circumference, in a supporting body which is used for a damper, an edge, etc. of a loudspeaker. CONSTITUTION:A supporting body 2 is constituted so that the heights of corrugations are made lower gradually toward to an outside circumference 2b from an inside circumference 2a. As a result, stiffness around the inside circumference 2a is increased, and becomes extremely hard, therefore, it becomes equivalent to the fact that its inside diameter is enlarged when the supporting body has been installed. Accordingly, width of the supporting body becomes short effectively, and rolling and gap rubbing become hard to be generated. |
