Self resonance-type sound-producing speaker and method of placing thereof

摘要

A self resonance-type sound-producing speaker that is waterproof and readily attachable. The self resonance-type sound-producing speaker includes an actuator speaker unit and a polymer foam arranged to cover the entire outer surface of this speaker unit and converts the vibrations from the speaker unit into plane waves to externally produce sound. The polymer foam preferably has the expansion ratio of 10 to 30 times and the closed pore structure. The thickness of the polymer foam is preferably not less than 2 mm and is more preferably not less than 3 mm.

主权项

1. A self resonance-type sound-producing speaker, comprising:
a speaker unit; and a polymer foam arranged to fully cover an outer surface of the speaker unit;wherein:
the polymer foam amplifies sound-producing vibration from the speaker unit and produces sound in the form of plane waves; an attachment plate is provided outside of the polymer foam to resonate and transmit the sound-producing vibration to outside; and the speaker unit is tentatively placed, and the polymer foam is injected into a space between the speaker unit and the attachment plate and is solidified to cover the outer surface of the speaker unit.