Mechanical passive quakeproof earphone

Abstract

A mechanical type passive shockproof earphone comprises a amplitude limit sound transmission member and a earmuff; the amplitude limiting sound transmission member is made up of two amplitude limiting baffle plates, a acoustic diaphragm installed between the two baffle plates and ring shaped amplitude limiting gaskets disposed between the acoustic diaphragm and the amplitude limiting baffle plate, by multilayer fixing; the earmuff is installed on the amplitude limiting baffle plate on one side; and dense sound transmission holes are formed on the baffle plates; The invention adopts mechanical type amplitude limiting sound transmission, achieves the advantages of no power supply, simple structure, small volume, convenient wearing and maintaining, and high reliability; not only can transmit normal sound in high sensitivity and high quality, but also can limit the amplitude of sudden high db noise; is very suitable for battle environment.

Description

(1) Technical field: [0001] The invention belongs to an anti-vibration earphone, in particular to a mechanical passive anti-vibration earphone suitable for staff in a battlefield environment with pulsed sudden high-decibel noise. (two) background technology: [0002] In the battlefield environment, shell launches and explosions are pulsed and sudden high-decibel noises, which have traumatic and serious damage to the eardrums of the staff in them; and for the staff in this environment, It is necessary to protect the eardrum from high-decibel noise and maintain a high-sensitivity hearing ability; therefore, the protective earphones they use must be able to directly transmit the sound of normal volume and limit the noise beyond the normal volume. width. Existing anti-vibration earphones all adopt the electronic active type at present, and its basic principle is to remove the noise signal other than the voice frequency through the filter, and carry out the voltage limit to the ...

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