US 12,452,607 B2
Speaker
Bo Xiao, Changzhou (CN); and Ronglin Linghu, Changzhou (CN)
Assigned to AAC Microtech (Changzhou) Co., Ltd., Changzhou (CN)
Filed by AAC Microtech (Changzhou) Co., Ltd., Jiangsu (CN)
Filed on May 6, 2023, as Appl. No. 18/313,318.
Application 18/313,318 is a continuation of application No. PCT/CN2023/085174, filed on Mar. 30, 2023.
Claims priority of application No. 202320121666.7 (CN), filed on Jan. 16, 2023.
Prior Publication US 2024/0244377 A1, Jul. 18, 2024
Int. Cl. H04R 9/06 (2006.01); H04R 7/06 (2006.01); H04R 7/18 (2006.01); H04R 9/02 (2006.01); H04R 9/04 (2006.01)
CPC H04R 9/06 (2013.01) [H04R 7/06 (2013.01); H04R 7/18 (2013.01); H04R 9/025 (2013.01); H04R 9/046 (2013.01); H04R 2400/11 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A speaker, comprising:
a frame;
a vibration system fixed to the frame;
a magnetic circuit system provided with a magnetic gap and fixed to the frame;
a front cover disposed on the frame;
a sealing diaphragm; and
a sound outlet formed on a side of the speaker, wherein
the vibration system comprises an upper diaphragm, a lower diaphragm in an annular shape and spaced apart from the upper diaphragm, a skeleton connected between the upper diaphragm and the lower diaphragm, and a voice coil fixed to the skeleton and located in the magnetic gap; the skeleton comprises a fixing part fixed to the upper diaphragm and an annular enclosure wall extending in a direction close to the lower diaphragm from an outer edge of the fixing part and arranged between the frame and the magnetic circuit system; the lower diaphragm is connected between the frame and the annular enclosure wall; the sealing diaphragm is connected between the frame and the annular enclosure wall; the upper diaphragm and the front cover form a first front cavity; the annular enclosure wall, the sealing diaphragm, the lower diaphragm and the frame form a second front cavity; both the first front cavity and the second front cavity communicate with the sound outlet; a Young's modulus of the sealing diaphragm is 0.5Mpa to 10Mpa.