JPS6045584U

JPS6045584U - dome speaker

Info

Publication number: JPS6045584U
Application number: JP13761683U
Authority: JP
Inventors: 土屋　五男
Original assignee: パイオニア株式会社
Priority date: 1983-09-05
Filing date: 1983-09-05
Publication date: 1985-03-30

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は従来のドーム・スピーカの内部構造の縦断面図
、第２図は本考案に係るドーム・スピーカの内部構造の
縦断面図である。一生要部分の符号の説明、１０・・・マグネット、１４
・・・振動板、１６・・・ヨーク、１６ｂ・・・貫通孔
、１７・・・バックチャンバ部材、１８・・・発泡樹脂
。FIG. 1 is a vertical sectional view of the internal structure of a conventional dome speaker, and FIG. 2 is a vertical sectional view of the internal structure of the dome speaker according to the present invention. Explanation of symbols for important parts of life, 10...Magnet, 14
... Vibration plate, 16... Yoke, 16b... Through hole, 17... Back chamber member, 18... Foamed resin.

Claims

[Scope of utility model registration request]

an annular magnet, a yoke having a center pole part inserted into the ring of the magnet, and being fixed to the magnet and forming a part of an external magnetic circuit together with the magnet; and a yoke behind the yoke. and a back chamber member disposed in contact with the dome speaker, the dome speaker having a through hole that expands in diameter in the direction of sound emission at the axial center of the center pole part, the back chamber member What is claimed is: 1. A dome speaker whose diameter is reduced in a sound emission direction, and wherein foam or resin injected into the back chamber member is filled from the inside of the back chamber member to the through hole.