JPS5534802A - Dc brushless motor - Google Patents

Dc brushless motor

Info

Publication number
JPS5534802A
JPS5534802A JP10547278A JP10547278A JPS5534802A JP S5534802 A JPS5534802 A JP S5534802A JP 10547278 A JP10547278 A JP 10547278A JP 10547278 A JP10547278 A JP 10547278A JP S5534802 A JPS5534802 A JP S5534802A
Authority
JP
Japan
Prior art keywords
magnetic
permanent magnet
magnetic body
inversion portion
polarity
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
JP10547278A
Other languages
Japanese (ja)
Inventor
Taketoshi Araya
Masao Hiyane
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP10547278A priority Critical patent/JPS5534802A/en
Publication of JPS5534802A publication Critical patent/JPS5534802A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE:To increase torque without expanding teeth, by providing a magnetic body on the periphery of a rotor so that the thickness of the magnetic body is so thin that the vicinity of the magnetic-polarity-inversion portion of a permanent magnet is sufficiently staurated magnetically. CONSTITUTION:A stator 18 is composed of magnetic poles 12 to 14 extruded from the inner surface of a yoke 11 and exciter windings 15 to 17 which are wound around the magnetic poles. A rotor 19 is composed of a cylindrical permanent magnet 20 magnetized in the direction of the diameter, and a magnetic body 21 that is contacted to the periphery of the permanent magnet 20. The magnetic body 21 is provided to form a magnetic path which shorts the magnetic fluxes in the vicinity of the magnetic-polarity-inversion portion of the permanent magnet 20, and the thickness of the magnetic body 21 is selected so that the shorted magnetic fluxes are saturated. By providing the magnetic body 21, the shorted magnetic fluxes in the vicinity of the magnetic-polarity-inversion portion are saturated and the magnetic resistance in this portion is increased. Therefore the magnetic fluxes passing through the magnetic poles increase even though the magnetic-polyarity-inversion portion is located at the position lower than the teeth, thereby the torque can be increased.
JP10547278A 1978-08-31 1978-08-31 Dc brushless motor Pending JPS5534802A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10547278A JPS5534802A (en) 1978-08-31 1978-08-31 Dc brushless motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10547278A JPS5534802A (en) 1978-08-31 1978-08-31 Dc brushless motor

Publications (1)

Publication Number Publication Date
JPS5534802A true JPS5534802A (en) 1980-03-11

Family

ID=14408526

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10547278A Pending JPS5534802A (en) 1978-08-31 1978-08-31 Dc brushless motor

Country Status (1)

Country Link
JP (1) JPS5534802A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56121360A (en) * 1980-02-26 1981-09-24 Shibaura Eng Works Co Ltd Brushless motor
JPH08191563A (en) * 1994-06-29 1996-07-23 Samsung Electro Mech Co Ltd Linear reluctance motor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56121360A (en) * 1980-02-26 1981-09-24 Shibaura Eng Works Co Ltd Brushless motor
JPH08191563A (en) * 1994-06-29 1996-07-23 Samsung Electro Mech Co Ltd Linear reluctance motor

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