JPS58125493U

JPS58125493U - speaker

Info

Publication number: JPS58125493U
Application number: JP2326582U
Authority: JP
Inventors: 田島　重人; 平手　政之
Original assignee: 三洋電機株式会社
Priority date: 1982-02-19
Filing date: 1982-02-19
Publication date: 1983-08-26

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) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は従来スピーカの断面図、第２図は他の従来スピ
ーカの要部断面図、第３図及び第４図は夫々本考案のス
ピーカの異なる実施例を示す要部断面図、第５図は本考
案スピーカの製造工程を示す概略図、第６図は従来スピ
ーカの製造工程を示す概略図である。１・・・ボトムプレート、２・・・センターポール、３
・・・マグネット、４，４０．４０’・・・トッププレ
ート、４１．４１’・・・第１薄板、４２．　４２’・
・・第２薄板、４３．　４３’・・・折曲面、５・・・
磁気ギャップ、６・・・ボイスコイル、７・・・振動板
。FIG. 1 is a sectional view of a conventional speaker, FIG. 2 is a sectional view of a main part of another conventional speaker, FIGS. 3 and 4 are sectional views of main parts showing different embodiments of the speaker of the present invention, and FIG. The figure is a schematic diagram showing the manufacturing process of the speaker of the present invention, and FIG. 6 is a schematic diagram showing the manufacturing process of the conventional speaker. 1... Bottom plate, 2... Center pole, 3
... Magnet, 4, 40.40'... Top plate, 41.41'... First thin plate, 42. 42'・
...Second thin plate, 43. 43'...Bending surface, 5...
Magnetic gap, 6...Voice coil, 7...Diaphragm.

Claims

[Scope of utility model registration request]

(1) a bottom plate having a center pole in the center, an annular magnet placed on the bottom plate, and an annular top plate placed on the magnet to form an equal magnetic gap with the center pole; In a speaker having a voice coil inserted into the magnetic gap and a diaphragm connected to the voice coil, the top plate is made of a thin magnetic plate with a thickness that does not saturate the magnetic flux from the magnet. , a support pin characterized in that the inner peripheral part of the top plate is bent toward the diaphragm side, and the bent surface is opposed to the center pole to form a magnetic gap.

(2) The top plate is a laminated structure of two magnetic thin plates, and one of the magnetic thin plates is configured by the bottom of a bowl-shaped speaker frame. speaker.