JPH02120986U - - Google Patents

Info

Publication number
JPH02120986U
JPH02120986U JP2857489U JP2857489U JPH02120986U JP H02120986 U JPH02120986 U JP H02120986U JP 2857489 U JP2857489 U JP 2857489U JP 2857489 U JP2857489 U JP 2857489U JP H02120986 U JPH02120986 U JP H02120986U
Authority
JP
Japan
Prior art keywords
ballast
diaphragm
view
welded
utility
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2857489U
Other languages
English (en)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP2857489U priority Critical patent/JPH02120986U/ja
Publication of JPH02120986U publication Critical patent/JPH02120986U/ja
Pending legal-status Critical Current

Links

Description

【図面の簡単な説明】
第1図および第2図はそれぞれ本考案による振
動板の一実施例を示す断面図および平面図、第3
図は該実施例に用いる溶接前のバラストの例を示
す断面図、第4図は該実施例の振動形態を示す説
明図、第5図は該実施例の振動波形図、第6図は
従来の電磁音響変換器の縦断面図、第7図は従来
の振動板へのバラストの溶接構造を示す断面図、
第8図は第7図のバラストの平面図、第9図は従
来の振動板の振動形態を示す説明図、第10図は
従来の振動板の振動波形図である。 1……ポール、2……ヨーク、3……巻線、4
……永久磁石、5……ケース、6……振動板、7
……バラスト、8……溶接部。

Claims (1)

    【実用新案登録請求の範囲】
  1. 振動板の片面にバラストをその全周にわたつて
    溶接したことを特徴とする電磁音響変換器。
JP2857489U 1989-03-14 1989-03-14 Pending JPH02120986U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2857489U JPH02120986U (ja) 1989-03-14 1989-03-14

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2857489U JPH02120986U (ja) 1989-03-14 1989-03-14

Publications (1)

Publication Number Publication Date
JPH02120986U true JPH02120986U (ja) 1990-10-01

Family

ID=31252056

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2857489U Pending JPH02120986U (ja) 1989-03-14 1989-03-14

Country Status (1)

Country Link
JP (1) JPH02120986U (ja)

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