US 11,818,559 B2
Speaker diaphragm and speaker
Ting Wang, Shandong (CN); Guodong Zhao, Shandong (CN); Jie Zhu, Shandong (CN); Chun Li, Shandong (CN); and Chunfa Liu, Shandong (CN)
Assigned to Goertek Inc., Shandong (CN)
Appl. No. 17/252,471
Filed by GOERTEK INC., Shandong (CN)
PCT Filed Oct. 13, 2018, PCT No. PCT/CN2018/110161
§ 371(c)(1), (2) Date Dec. 15, 2020,
PCT Pub. No. WO2019/237602, PCT Pub. Date Dec. 19, 2019.
Claims priority of application No. 201810621657.8 (CN), filed on Jun. 15, 2018.
Prior Publication US 2021/0258707 A1, Aug. 19, 2021
Int. Cl. H04R 31/00 (2006.01); H04R 7/10 (2006.01); B32B 7/12 (2006.01); B32B 27/08 (2006.01); B32B 27/36 (2006.01); C09J 133/08 (2006.01); C09J 175/04 (2006.01); C09J 183/04 (2006.01)
CPC H04R 31/003 (2013.01) [B32B 7/12 (2013.01); B32B 27/08 (2013.01); B32B 27/36 (2013.01); C09J 133/08 (2013.01); C09J 175/04 (2013.01); C09J 183/04 (2013.01); H04R 7/10 (2013.01); B32B 2274/00 (2013.01); B32B 2457/00 (2013.01); H04R 2307/025 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A speaker diaphragm, comprising two surface layers compounded together and at least one intermediate layer located between the two surface layers, wherein at least one of the surface layers comprises a thermoplastic polyester elastomer film layer, and at least one of the intermediate layers is an adhesive layer, wherein the thermoplastic polyester elastomer film layer has a Young's modulus of 1 MPa-1000 MPa, a loss factor being greater than or equal to 0.015, and an elastic recovery rate after 10% strain being greater than or equal to 80%.