JPS5927596U - Electromagnetic plunger for automatic piano - Google Patents

Electromagnetic plunger for automatic piano

Info

Publication number
JPS5927596U
JPS5927596U JP12307082U JP12307082U JPS5927596U JP S5927596 U JPS5927596 U JP S5927596U JP 12307082 U JP12307082 U JP 12307082U JP 12307082 U JP12307082 U JP 12307082U JP S5927596 U JPS5927596 U JP S5927596U
Authority
JP
Japan
Prior art keywords
coil
movable member
electromagnetic plunger
plunger
automatic piano
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.)
Granted
Application number
JP12307082U
Other languages
Japanese (ja)
Other versions
JPS6336386Y2 (en
Inventor
善樹 西谷
繁 村松
Original Assignee
ヤマハ株式会社
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 by ヤマハ株式会社 filed Critical ヤマハ株式会社
Priority to JP12307082U priority Critical patent/JPS5927596U/en
Publication of JPS5927596U publication Critical patent/JPS5927596U/en
Application granted granted Critical
Publication of JPS6336386Y2 publication Critical patent/JPS6336386Y2/ja
Granted legal-status Critical Current

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  • Electromagnets (AREA)

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

【図面の簡単な説明】[Brief explanation of drawings]

第１図は従来の電磁プランジャの一例を示す断面図、第
２図は推力−ストローク特性を示す図、第３図はこの考
案に係る自動演奏ピアノ用電磁プランジャーの一実施例
を示す一断面図、第４図はこの考案の他の実施例を示す
要部正面図である。 ２・・・コイルボビン、３・・・第１のコイル、４・・
・可動鉄心、６・・・鍵、１０・・・固定ヨーク、１１
・・・可動部材、１２・・・可動ヨーク、２３・・・第
２のコイル、２７・・・磁気変動部。FIG. 1 is a cross-sectional view showing an example of a conventional electromagnetic plunger, FIG. 2 is a view showing thrust-stroke characteristics, and FIG. 3 is a cross-sectional view showing an example of the electromagnetic plunger for a player piano according to this invention. 4 are front views of essential parts showing another embodiment of this invention. 2... Coil bobbin, 3... First coil, 4...
・Movable iron core, 6...Key, 10...Fixed yoke, 11
. . . Movable member, 12 . . . Movable yoke, 23 . . . Second coil, 27 .

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 同軸的に配置された第１および第２のコイルと、これら
両コイルの中心孔に挿通された第１のコイルへの通電に
よって軸方向に移動されることにより鍵を作動させる可
動部材と、前記第２のコイルに対応して前記可動部材に
設けられた磁気変動部とを具備してなり、前記磁気変動
部は前記可動部材の移動に伴い前記第２のコイル部を通
過する際、該コイル内に起電力を発生させ、この起電力
はパルス信号としてカウントされ、前記第１のコイルの
電流コントロールに使用されることを特徴とする自動演
奏ピアノ用電磁プランジャ。a movable member that operates the key by being moved in the axial direction by energizing the first and second coils arranged coaxially and the first coil inserted through the center hole of both the coils; and a magnetic variation section provided on the movable member corresponding to the second coil, and when the magnetic variation section passes through the second coil section as the movable member moves, the coil An electromagnetic plunger for a player piano, characterized in that an electromotive force is generated within the plunger, and the electromotive force is counted as a pulse signal and used to control the current of the first coil.
JP12307082U 1982-08-13 1982-08-13 Electromagnetic plunger for automatic piano Granted JPS5927596U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12307082U JPS5927596U (en) 1982-08-13 1982-08-13 Electromagnetic plunger for automatic piano

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12307082U JPS5927596U (en) 1982-08-13 1982-08-13 Electromagnetic plunger for automatic piano

Publications (2)

Publication Number Publication Date
JPS5927596U true JPS5927596U (en) 1984-02-21
JPS6336386Y2 JPS6336386Y2 (en) 1988-09-27

Family

ID=30281071

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12307082U Granted JPS5927596U (en) 1982-08-13 1982-08-13 Electromagnetic plunger for automatic piano

Country Status (1)

Country Link
JP (1) JPS5927596U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03174589A (en) * 1989-12-04 1991-07-29 Yamaha Corp Operator driving solenoid for automatic piano

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03174589A (en) * 1989-12-04 1991-07-29 Yamaha Corp Operator driving solenoid for automatic piano

Also Published As

Publication number Publication date
JPS6336386Y2 (en) 1988-09-27

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