Bone-conduction microphone

A microphone and bone conduction technology, which is applied to bone conduction transducer hearing equipment, sensors, electrical components, etc. The effect of reducing the deviation of the center magnetic circuit and reducing the friction problem

CN113271524AActive Publication Date: 2021-08-17JIANGXI LIANCHUANG HONGSHENG ELECTRONICS
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2021-08-17

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Abstract

The invention discloses a bone-conduction microphone, which belongs to the technical field of audio transmission, and comprises a shell provided with a limiting hole; a positioning column which is located at the center of the shell, wherein the positioning column is matched with the limiting hole to limit free rotation of the positioning column; a central magnet which is arranged on the positioning column in a sleeving manner; the two groups of reverse induction coils which are annularly arranged on the central magnet; a lead wire, wherein one end of the lead wire is arranged between the two groups of reverse induction coils through an FPC conductive rubber plate so as to fix the two groups of reverse induction coils into a whole, and the other end of the lead wire penetrates out of the shell; and suspension pieces which are symmetrically arranged at the two ends of the central magnet. A traditional matching mode of the shell and the positioning column is changed, a traditional round hole matching mode is changed into a triangular or polygonal matching mode, center magnetic circuit deviation caused by tolerance matching can be effectively reduced, the magnetic gap difference in the symmetrical direction can be reduced, and therefore the problem that a voice coil vibrates up and down to generate collision is solved.
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Description

technical field

[0001] The invention relates to the technical field of audio transmission, in particular to a bone conduction microphone. Background technique

[0002] There are two ways for external sound to enter the inner ear of the human body, including air conduction and bone conduction. Among them, air conduction refers to the transmission of sound to the inner ear through the outer ear and middle ear, while bone conduction technology refers to converting vibration signals into electrical signals by picking up vibration receivers. Specifically, the bone conduction technology is to place the pickup vibration receiver close to the head or neck of the human body, and use the slight vibration of the head and neck bones caused by the human speech to collect the sound signal and convert it into an electrical signal and output it. Bone conduction technology does not require air as a sound transmission medium, so there will still be a high-definition sound output in a strong ...

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Embodiment Construction

[0036] This part will describe the specific embodiment of the present invention in detail, and the preferred embodiment of the present invention is shown in the accompanying drawings. Each technical feature and overall technical solution of the invention, but it should not be understood as a limitation on the protection scope of the present invention.

[0037] In the description of the present invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc. indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only In order to facilitate the description of the present invention and simplify the description, it does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

[0038] I...