公开(公告)号：US09838817B2

公开(公告)日：2017-12-05

申请号：US15103231

申请日：2014-04-24

Applicant: GOERTEK INC.

Inventor： Xiuli Chang ,  Yonghua Zhang ,  Chengzong Ji

IPC: H04R31/00 ,  H04R7/10 ,  H04R7/12

CPC classification number: H04R31/003 ,  H04R7/10 ,  H04R7/125 ,  H04R7/127 ,  H04R2231/001 ,  H04R2307/021 ,  H04R2307/025 ,  H04R2307/029

Abstract: A loudspeaker diaphragm, comprising a dome portion located at central position and a suspension ring portion located at edge position; the dome portion and/or the suspension ring portion comprise silk fabric and thermoplastic polyurethane combined with the silk fabric; and the silk fabric is coated with thermosetting adhesive. The method for manufacturing the loudspeaker diaphragm comprises following steps: a. coating the silk fabric with a thermosetting adhesive under a high temperature, and drying the silk fabric; b. hot pressing and combining the silk fabric and thermoplastic polyurethane to form a membrane; c. pressing the membrane to form the dome portion and/or the suspension ring portion. The dome portion, or both the dome portion and the suspension ring portion of the loudspeaker diaphragm comprise silk fabric coated with a thermosetting adhesive and thermoplastic polyurethane. Thus formed loudspeaker diaphragm has good rigidity and damping characteristic, thus improving acoustic performance of the diaphragm.