US 11,968,507 B2
Speaker having first diaphragm, second diaphragm with different stiffness from first diaphragm, and driver located in through hole of first diaphragm
Shiyang Cheng, Shenzhen (CN); Qiang Dan, Shenzhen (CN); Yiwei Zhou, Shenzhen (CN); Yu Shen, Shenzhen (CN); and Yang Li, Shenzhen (CN)
Assigned to AAC Kaital Technologies (Wuhan) CO., LTD, Wuhan (CN)
Filed by AAC Kaitai Technologies (Wuhan) CO., LTD, Hubei (CN)
Filed on Dec. 30, 2021, as Appl. No. 17/566,632.
Claims priority of application No. 202111145144.2 (CN), filed on Sep. 28, 2021.
Prior Publication US 2023/0094844 A1, Mar. 30, 2023
Int. Cl. H04R 7/10 (2006.01); H04R 17/00 (2006.01)
CPC H04R 7/10 (2013.01) [H04R 17/00 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A speaker comprising:
a base with an accommodation cavity;
a vibration sounding assembly accommodated in the accommodation cavity, comprising a first diaphragm and a second diaphragm, and a driver fixed to the first diaphragm for driving the first diaphragm and the second diaphragm to vibrate and produce sound; wherein
the second diaphragm stacks on the first diaphragm, and a stiffness of the second diaphragm is different from a stiffness of the first diaphragm, the first diaphragm is close to the accommodation cavity, the first diaphragm includes a through hole along a thickness direction thereof, the driver spaced apart from the second diaphragm penetrates the through hole, and the through hole is communicating with the accommodation cavity, a projection of the second diaphragm and the driver on the first diaphragm do not overlap.