Piezoelectric ceramic bone conduction vibrator

Abstract

The invention provides a piezoelectric ceramic bone conduction vibrator. Two groups of piezoelectric ceramic pieces with opposite polarity are attached on one elastic metal piece to form the vibrator, anodes and cathodes of the piezoelectric ceramic pieces are led out through wires, and organic silicon gel is used for packaging the vibrator. The piezoelectric ceramic bone conduction vibrator enables those with heating disorder to hear sound through the skull, achieves clear conversation in communication under high-noise environment, achieves the aim of greatly removing noise and simultaneously achieves the waterproof function of an underwater communication device.

Description

technical field

[0001] The invention belongs to the technical field of electroacoustic transducers, and relates to an audio frequency vibration conduction technology. Background technique

[0002] The frequency range of human audible sound is: 20Hz ~ 20kHz, the vibration in this frequency range will be transmitted to the human ear through the air, so that people can hear the sound. Conventional speakers produce sound through the audio vibration of the vibrating diaphragm. Bone conduction speakers, on the other hand, need to transmit audio vibrations directly to the skull instead of directly emitting sound.

[0003] The conventional bone conduction speaker is an electromagnetic energy conversion method, and its vibration transmission is generally conducted through a hard material. And use padded sound-absorbing sponge and other materials to reduce sound leakage. Its structure is complex, heavy and uncomfortable to wear. At the same time, there is electromagnetic radiation...

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