US 11,659,334 B2
Acoustic device
Zhang Ren, Shenzhen (CN); and Zhiwei Zhong, Shenzhen (CN)
Assigned to AAC Microtech (Changzhou) Co, , Ltd., Changzhou (CN)
Filed by AAC Microtech (Changzhou) Co., Ltd., Changzhou (CN)
Filed on Dec. 3, 2021, as Appl. No. 17/541,281.
Claims priority of application No. 202121787783.4 (CN), filed on Aug. 2, 2021.
Prior Publication US 2023/0031282 A1, Feb. 2, 2023
Int. Cl. H04R 9/06 (2006.01); H04R 7/16 (2006.01); H04R 9/04 (2006.01); H04R 9/02 (2006.01)
CPC H04R 9/06 (2013.01) [H04R 7/16 (2013.01); H04R 9/025 (2013.01); H04R 9/046 (2013.01); H04R 2400/11 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An acoustic device, comprising:
a frame;
a magnetic circuit system having a magnetic gap;
a vibration system supported on the frame, the vibration system comprising:
a diaphragm comprising:
an annular dome comprising:
an annular dome body;
a first dome extending wall bending and extending from the dome body along a direction toward the magnetic circuit system;
an annular first suspension;
an annular second suspension, the first suspension surrounding and spaced apart from the second suspension, the dome located between and connecting with the first and second suspension;
a first fixation portion bending and extending from a side of the first suspension proximal to the second suspension, the first fixation portion connected to and wrapping the first dome extending wall;
a voice coil at least partially received in the magnetic gap for driving the diaphragm to generate sounds;
a support connecting with the diaphragm and the voice coil.