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1. (WO2018138955) SOUND GENERATOR

Pub. No.:    WO/2018/138955    International Application No.:    PCT/JP2017/032754
Publication Date: Fri Aug 03 01:59:59 CEST 2018 International Filing Date: Wed Sep 13 01:59:59 CEST 2017
IPC: H04R 1/00
B60Q 5/00
H04R 1/02
H04R 7/12
H04R 9/04
Applicants: ANDEN CO., LTD.
アンデン株式会社
Inventors: MIYATA Susumu
宮田 晋
HAYAKAWA Koshiro
早川 孝志郎
Title: SOUND GENERATOR
Abstract:
This sound generator for generating sound by vibrating a diaphragm (72) is provided with: a housing (1) having formed therein a first space (5) which is open to the atmosphere through a sound release hole (84), and also having formed therein a second space (6) separated from the first space by the diaphragm; and a closure plate (28) disposed in the first space so as to face the diaphragm while being separated from the diaphragm. When the diaphragm is displaced toward the first space by the difference in pressure between the first space and the second space, the diaphragm comes into contact with the closure plate and is restricted to deform.