JPS55100057A - Brushless motor - Google Patents

Brushless motor

Info

Publication number
JPS55100057A
JPS55100057A JP717779A JP717779A JPS55100057A JP S55100057 A JPS55100057 A JP S55100057A JP 717779 A JP717779 A JP 717779A JP 717779 A JP717779 A JP 717779A JP S55100057 A JPS55100057 A JP S55100057A
Authority
JP
Japan
Prior art keywords
speed
sensing
coil
motor
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.)
Pending
Application number
JP717779A
Other languages
Japanese (ja)
Inventor
Tadashi Takahashi
Shigeki Morinaga
Kunio Miyashita
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP717779A priority Critical patent/JPS55100057A/en
Priority to US06/109,499 priority patent/US4347536A/en
Publication of JPS55100057A publication Critical patent/JPS55100057A/en
Pending legal-status Critical Current

Links

Landscapes

  • Brushless Motors (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)

Abstract

PURPOSE:To enhance a speed-sensing mechanism and to make a motor compact by arranging a speed-sensing coil together with a driving coil in a stator yoke, and utilizing the permanent magnet of a rotor for speed sensing. CONSTITUTION:A speed-sensing coil 12 is arranged between a stator yoke 10 and a driving coil 13 in a flat motor which is enclosed in a fixed cylinder 1 in order to drive a rotating cylinder 5 directly. The speed-sensing coil 12 opposes a permanent magnet 15 of a rotor 17. The ends of the driving coil 13 and the speed-sensing coil 12 are both treated by a printed board 14 provided at the peripheral portion of the stator yoke 11. In this constitution, a permanent magnet 15 of a rotor can be utilized for speed sensing, the speed-sensing mechanism can be enclosed, and the configuration of the motor can be made compact. Furthermore, the motor can be manufactured inexpensively by making the configuration of the driving coil 13 the same as that of the speed-sensing coil 12.
JP717779A 1979-01-10 1979-01-26 Brushless motor Pending JPS55100057A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP717779A JPS55100057A (en) 1979-01-26 1979-01-26 Brushless motor
US06/109,499 US4347536A (en) 1979-01-10 1980-01-04 Rotary cylinder apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP717779A JPS55100057A (en) 1979-01-26 1979-01-26 Brushless motor

Publications (1)

Publication Number Publication Date
JPS55100057A true JPS55100057A (en) 1980-07-30

Family

ID=11658787

Family Applications (1)

Application Number Title Priority Date Filing Date
JP717779A Pending JPS55100057A (en) 1979-01-10 1979-01-26 Brushless motor

Country Status (1)

Country Link
JP (1) JPS55100057A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4531079A (en) * 1982-05-27 1985-07-23 Papst-Motoren Gmbh & Co. Kg Brushless DC drive motor for signal recording means
US4594524A (en) * 1984-02-22 1986-06-10 Kangyo Denkikiki Kabushiki Kaisha Coreless-brushless motor
US5124604A (en) * 1989-06-15 1992-06-23 Areal Technology Corp. Disk drive motor
US20090140600A1 (en) * 2007-10-22 2009-06-04 Metal Industries Research & Development Centre Winding module of permanent magnet electric machinery

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4913605A (en) * 1972-05-22 1974-02-06

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4913605A (en) * 1972-05-22 1974-02-06

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4531079A (en) * 1982-05-27 1985-07-23 Papst-Motoren Gmbh & Co. Kg Brushless DC drive motor for signal recording means
US4594524A (en) * 1984-02-22 1986-06-10 Kangyo Denkikiki Kabushiki Kaisha Coreless-brushless motor
US5124604A (en) * 1989-06-15 1992-06-23 Areal Technology Corp. Disk drive motor
US20090140600A1 (en) * 2007-10-22 2009-06-04 Metal Industries Research & Development Centre Winding module of permanent magnet electric machinery

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