Patent ID: 11895452
Assignee: AAC ACOUSTIC TECHNOLOGIES (SHENZHEN) CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A bone conduction microphone, comprising:
a housing;
a circuit board engaging with the housing for forming a containment space, and including an acoustic channel;
a vibration assembly located in the containment space for dividing the containment space into a first conduction cavity and a second conduction cavity which are respectively communicated with the acoustic channel, the vibration assembly including a vibration member spaced from the circuit board, and a frame connecting the vibration member and the circuit board; the frame, the vibration member and the circuit board being enclosed with the housing for forming the first conduction cavity; the frame, the vibration member and the circuit board being jointly enclosed for forming the second conduction cavity;
a MEMS chip located in the second conduction cavity and fixed to the circuit board, and including a vibration diaphragm between the circuit board and the vibration member;
wherein a vibration of the vibration member is conducted to one side of the vibration diaphragm through the first conduction cavity and the acoustic channel, and the vibration of the vibration member is also conducted to the other side of the vibration diaphragm through the second conduction cavity.