JPS60104770U - rotation detection device - Google Patents

rotation detection device

Info

Publication number
JPS60104770U
JPS60104770U JP19768583U JP19768583U JPS60104770U JP S60104770 U JPS60104770 U JP S60104770U JP 19768583 U JP19768583 U JP 19768583U JP 19768583 U JP19768583 U JP 19768583U JP S60104770 U JPS60104770 U JP S60104770U
Authority
JP
Japan
Prior art keywords
rotation detection
detection device
magnetic pole
magnet
disk
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
JP19768583U
Other languages
Japanese (ja)
Inventor
広 岩井
永岡　正史
Original Assignee
日本ビクター株式会社
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 日本ビクター株式会社 filed Critical 日本ビクター株式会社
Priority to JP19768583U priority Critical patent/JPS60104770U/en
Publication of JPS60104770U publication Critical patent/JPS60104770U/en
Pending legal-status Critical Current

Links

Landscapes

  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
  • Rotational Drive Of Disk (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 the drawing]

第１図は従来の回転検出装置を示す斜視図、第２図は第
１図の一部分を拡大して示す部分断面　７図、第３図は
本考案になる回転検出装置の一実施　例を示す斜視図、
第４図は第３図の要部を拡大して示す部分断面図、第５
図乃至第８図は本考案になる回転検出装置の他の実施例
を示す図である。 １・・・ステータヨーク、２・・・ロータヨーク、４・
・・インデックス・センサ、１０，１１，１３．１５・
・・ＦＧマグネット。Fig. 1 is a perspective view showing a conventional rotation detection device, Fig. 2 is a partial cross section showing an enlarged portion of Fig. 1, and Fig. 7 and Fig. 3 show an embodiment of the rotation detection device according to the present invention. Perspective view,
Figure 4 is a partial cross-sectional view showing the main part of Figure 3 on an enlarged scale;
8 to 8 are diagrams showing other embodiments of the rotation detection device according to the present invention. 1... Stator yoke, 2... Rotor yoke, 4...
・Index sensor, 10, 11, 13.15・
...FG magnet.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] ディスクと一体回転するロータヨークと、前記ロータ白
−りの全周にわたって設けられ、回転検出用の磁極が設
けられたＦＧマグネットとを設けた回転検出装置におい
て、前ｙＧマグネットの回転検出用の磁極が設けられて
いない部分に、ディスクのインデックスの位置検出用の
磁極を設けたことを特徴とする回転検出装置。In a rotation detection device including a rotor yoke that rotates integrally with the disk, and an FG magnet that is provided over the entire circumference of the rotor white and is provided with a rotation detection magnetic pole, the rotation detection magnetic pole of the front yG magnet is provided. A rotation detection device characterized in that a magnetic pole for detecting the position of an index of a disk is provided in a portion where no magnetic pole is provided.
JP19768583U 1983-12-22 1983-12-22 rotation detection device Pending JPS60104770U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19768583U JPS60104770U (en) 1983-12-22 1983-12-22 rotation detection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19768583U JPS60104770U (en) 1983-12-22 1983-12-22 rotation detection device

Publications (1)

Publication Number Publication Date
JPS60104770U true JPS60104770U (en) 1985-07-17

Family

ID=30756111

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19768583U Pending JPS60104770U (en) 1983-12-22 1983-12-22 rotation detection device

Country Status (1)

Country Link
JP (1) JPS60104770U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04359155A (en) * 1991-06-04 1992-12-11 Matsushita Electric Ind Co Ltd Fixing method for fg magnet

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52136312A (en) * 1976-05-11 1977-11-15 Sanyo Electric Co Ltd Detecting device of revolving velocity in brushless motor

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52136312A (en) * 1976-05-11 1977-11-15 Sanyo Electric Co Ltd Detecting device of revolving velocity in brushless motor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04359155A (en) * 1991-06-04 1992-12-11 Matsushita Electric Ind Co Ltd Fixing method for fg magnet

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