JPS58136774U - Rotation speed detection device - Google Patents

Rotation speed detection device

Info

Publication number
JPS58136774U
JPS58136774U JP1982033619U JP3361982U JPS58136774U JP S58136774 U JPS58136774 U JP S58136774U JP 1982033619 U JP1982033619 U JP 1982033619U JP 3361982 U JP3361982 U JP 3361982U JP S58136774 U JPS58136774 U JP S58136774U
Authority
JP
Japan
Prior art keywords
speed detection
magnetic flux
detection device
rotation speed
rotor
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
JP1982033619U
Other languages
Japanese (ja)
Other versions
JPS6143236Y2 (en
Inventor
打越　剛二
Original Assignee
ナカミチ株式会社
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 ナカミチ株式会社 filed Critical ナカミチ株式会社
Priority to JP1982033619U priority Critical patent/JPS58136774U/en
Publication of JPS58136774U publication Critical patent/JPS58136774U/en
Application granted granted Critical
Publication of JPS6143236Y2 publication Critical patent/JPS6143236Y2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Brushless Motors (AREA)
  • Control Of Electric Motors In General (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図は本考案装置の一実施例を適用したモータの要部
断面図、および第２図は歯部の位置関係の説明に供する
図をそれぞれ示す。 ６・・・回転子、７・・・駆動用コイル、９ａ、　　ｇ
ｂ。 ９Ｃ・・・歯部、１０ｂ、１０−Ｃ・・・環状体、１２
・・・速度検出用コイル、１３・・・速度検出用磁石、
１５ａ。 １５ｂ、１５Ｃ・・・良導体リング。FIG. 1 is a cross-sectional view of a main part of a motor to which an embodiment of the device of the present invention is applied, and FIG. 2 is a diagram for explaining the positional relationship of teeth. 6... Rotor, 7... Drive coil, 9a, g
b. 9C...Tooth portion, 10b, 10-C...Annular body, 12
... Speed detection coil, 13... Speed detection magnet,
15a. 15b, 15C...Good conductor ring.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 駆動用コイルの通電により回転駆動される回転子の周面
に形成した歯部と該歯部に対向して固定子の周面に形成
した歯部を速度検出用磁石の供給する磁束の磁路内に設
け、さらに前記回転子と固定子の歯部のうち少なくとも
一方の歯部を互いに＋ピッチずれた二重歯部構造とする
ことにより前記回転子の回転に応じて前記磁束の磁路を
周期的に切換え、速度検出用コイルに対する前記磁束の
鎖交状態をオン、オフする回転速度検出装置において、
前記駆動用コイルと前記速度検出用コイル間の相互誘導
を防止すべく、良導体１上ングを前記磁石の磁束と鎖交
するように配置したことを特徴とする回転速度検出装置
。A toothed portion formed on the circumferential surface of the rotor that is rotationally driven by energization of the drive coil and a toothed portion formed on the circumferential surface of the stator opposite to the toothed portion are used as a magnetic path for the magnetic flux supplied by the speed detection magnet. The magnetic path of the magnetic flux is changed according to the rotation of the rotor by providing a double tooth structure in which at least one of the teeth of the rotor and the stator is shifted by + pitch from each other. A rotation speed detection device that periodically switches on and off the interlinkage state of the magnetic flux with respect to the speed detection coil,
A rotation speed detection device characterized in that a good conductor 1 upper ring is arranged to interlink with the magnetic flux of the magnet in order to prevent mutual induction between the drive coil and the speed detection coil.
JP1982033619U 1982-03-10 1982-03-10 Rotation speed detection device Granted JPS58136774U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1982033619U JPS58136774U (en) 1982-03-10 1982-03-10 Rotation speed detection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1982033619U JPS58136774U (en) 1982-03-10 1982-03-10 Rotation speed detection device

Publications (2)

Publication Number Publication Date
JPS58136774U true JPS58136774U (en) 1983-09-14
JPS6143236Y2 JPS6143236Y2 (en) 1986-12-06

Family

ID=30045165

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1982033619U Granted JPS58136774U (en) 1982-03-10 1982-03-10 Rotation speed detection device

Country Status (1)

Country Link
JP (1) JPS58136774U (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5014773A (en) * 1973-06-11 1975-02-17
JPS5366980U (en) * 1976-11-06 1978-06-05
JPS5484022U (en) * 1977-11-26 1979-06-14
JPS5657957A (en) * 1979-10-16 1981-05-20 Matsushita Electric Ind Co Ltd Revolution detector

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5014773A (en) * 1973-06-11 1975-02-17
JPS5366980U (en) * 1976-11-06 1978-06-05
JPS5484022U (en) * 1977-11-26 1979-06-14
JPS5657957A (en) * 1979-10-16 1981-05-20 Matsushita Electric Ind Co Ltd Revolution detector

Also Published As

Publication number Publication date
JPS6143236Y2 (en) 1986-12-06

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