US 12,490,033 B2
Bone conduction microphones
Yongshuai Yuan, Shenzhen (CN); Wenbing Zhou, Shenzhen (CN); and Wenjun Deng, Shenzhen (CN)
Assigned to SHENZHEN SHOKZ CO., LTD., Shenzhen (CN)
Filed by SHENZHEN SHOKZ CO., LTD., Guangdong (CN)
Filed on Feb. 15, 2023, as Appl. No. 18/169,227.
Application 18/169,227 is a continuation of application No. PCT/CN2021/082495, filed on Mar. 23, 2021.
Claims priority of application No. PCT/CN2020/142533 (WO), filed on Dec. 31, 2020.
Prior Publication US 2023/0247352 A1, Aug. 3, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04R 1/28 (2006.01); H04R 1/46 (2006.01); H04R 17/02 (2006.01); H04R 17/10 (2006.01); H04R 25/00 (2006.01); H10N 30/30 (2023.01); H10N 30/50 (2023.01)
CPC H04R 25/606 (2013.01) [H04R 1/46 (2013.01); H04R 17/025 (2013.01); H04R 17/10 (2013.01); H10N 30/308 (2023.02); H10N 30/50 (2023.02); H10N 30/501 (2023.02); H04R 2460/13 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A bone conduction microphone, comprising:
a laminated structure formed by a vibration unit and an acoustic transducer unit; and
a base structure configured to load the laminated structure, at least one side of the laminated structure being physically connected to the base structure; wherein
the base structure vibrates based on an external vibration signal, and the vibration unit deforms in response to the vibration of the base structure; and the acoustic transducer unit generates an electrical signal based on the deformation of the vibration unit, wherein a resonant frequency of the bone conduction microphone is within a range of 2.5 kHz-4.5 kHz;
the vibration unit includes a suspension membrane structure, the suspension membrane structure is connected to the base structure through a circumferential side of the suspension membrane structure, and the acoustic transducer unit is located on an upper surface or a lower surface of the suspension membrane structure; wherein
the acoustic transducer unit is a ring structure, and a thickness of the suspension membrane structure located in an inner region of the ring structure is greater than a thickness of the suspension membrane structure located in an outer region of the ring structure.