JPS6057293U

JPS6057293U - speaker unit

Info

Publication number: JPS6057293U
Application number: JP14856583U
Authority: JP
Inventors: 美智仁朝倉
Original assignee: パイオニア株式会社
Priority date: 1983-09-26
Filing date: 1983-09-26
Publication date: 1985-04-22

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　ｋ従来のスピーカユニットを示す断面図で、第２
図は同背面図、第３図は同スピーカユニットの音圧周波
数特性、第４図は本考案に係るスピーカユニットの断面
図で、第５図は同スピーカユニットの音圧周波数特性を
示す。１・・・振動板、３・・・ボイスコイル、７・・・磁気
回路、１１．１３・・・穴、１２・・・キャップ、１４
・・・音響制動材。1st K is a sectional view showing a conventional speaker unit;
3 is a rear view of the same, FIG. 3 is a sound pressure frequency characteristic of the same speaker unit, FIG. 4 is a sectional view of the speaker unit according to the present invention, and FIG. 5 is a sound pressure frequency characteristic of the same speaker unit. 1... Vibration plate, 3... Voice coil, 7... Magnetic circuit, 11.13... Hole, 12... Cap, 14
...Acoustic damping material.

Claims

[Scope of utility model registration request]

In a speaker unit consisting of a vibration system having a voice coil in the center of the diaphragm and a magnetic circuit that drives this vibration system, a hole is formed in the center of the magnetic circuit that communicates with the back of the diaphragm, and a hole is formed in the center of the magnetic circuit to communicate with the back of the diaphragm. A speaker unit characterized in that a cap is fitted into the cap so as to be movable back and forth, a hole is formed in the cap that communicates with the inside and outside, and a resilient acoustic damping material is arranged between the rear surface of the magnetic circuit and the cap. .