JPS5736570A - Dc motor - Google Patents

Dc motor

Info

Publication number
JPS5736570A
JPS5736570A JP11215980A JP11215980A JPS5736570A JP S5736570 A JPS5736570 A JP S5736570A JP 11215980 A JP11215980 A JP 11215980A JP 11215980 A JP11215980 A JP 11215980A JP S5736570 A JPS5736570 A JP S5736570A
Authority
JP
Japan
Prior art keywords
pole
magnetic
magnetic pole
degrees
magnet
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
JP11215980A
Other languages
Japanese (ja)
Inventor
Makoto Goto
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP11215980A priority Critical patent/JPS5736570A/en
Publication of JPS5736570A publication Critical patent/JPS5736570A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
    • H02K29/06—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices
    • H02K29/08—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices using magnetic effect devices, e.g. Hall-plates, magneto-resistors

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc Machiner (AREA)

Abstract

PURPOSE:To facilitate the formation of magnetic poles of a magnet, by alternately arranging a first magnetic pole pair consisting of an N pole and an S pole having a wide magnetic pole angle and a second magnetic pole pair consisting of an N pole and an S pole having a narrow magnetic pole angle. CONSTITUTION:An annular magnet 5 fixed on the inner surface of a rotor 1 and magnetized is provided with N poles and S poles which are alternately located, and has alternately a first magnetic pole pair consisting of an N pole and an S pole having a magnetic pole angle of 120 degrees and a second magnetic pole pair consisting of an N pole and an S pole having a magnetic pole angle of 60 degrees. Armature coils 9, 10, 11 and 12 are disposed on the outer periphery of an armature iron core 7 so that the effective pitch thereof is equal to 60 degrees, the angle between the magnetic poles of the second magnetic pole pair of the magnet 5 and moreover said coils have a phase difference of 90 degrees, 1/4 of the magnetic pole period, 360 degrees, of the magnet 5. Thereby, the formation of magnetic poles of the magnet is facilitated.
JP11215980A 1980-08-13 1980-08-13 Dc motor Pending JPS5736570A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11215980A JPS5736570A (en) 1980-08-13 1980-08-13 Dc motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11215980A JPS5736570A (en) 1980-08-13 1980-08-13 Dc motor

Publications (1)

Publication Number Publication Date
JPS5736570A true JPS5736570A (en) 1982-02-27

Family

ID=14579707

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11215980A Pending JPS5736570A (en) 1980-08-13 1980-08-13 Dc motor

Country Status (1)

Country Link
JP (1) JPS5736570A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63109424A (en) * 1986-10-28 1988-05-14 Fuji Photo Film Co Ltd Camera
US4908649A (en) * 1986-08-12 1990-03-13 Minolta Camera Kabushiki Kaisha Automatic focus detection device for use in a camera

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4908649A (en) * 1986-08-12 1990-03-13 Minolta Camera Kabushiki Kaisha Automatic focus detection device for use in a camera
JPS63109424A (en) * 1986-10-28 1988-05-14 Fuji Photo Film Co Ltd Camera

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