JPS5765262A - Dc machine - Google Patents

Dc machine

Info

Publication number
JPS5765262A
JPS5765262A JP13982980A JP13982980A JPS5765262A JP S5765262 A JPS5765262 A JP S5765262A JP 13982980 A JP13982980 A JP 13982980A JP 13982980 A JP13982980 A JP 13982980A JP S5765262 A JPS5765262 A JP S5765262A
Authority
JP
Japan
Prior art keywords
magnetic flux
magnetic
coercive force
flux density
contrive
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
JP13982980A
Other languages
Japanese (ja)
Other versions
JPS6255385B2 (en
Inventor
Toshio Tomite
Fumio Tajima
Shuichi Takamatsu
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 JP13982980A priority Critical patent/JPS5765262A/en
Publication of JPS5765262A publication Critical patent/JPS5765262A/en
Publication of JPS6255385B2 publication Critical patent/JPS6255385B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/17—Stator cores with permanent magnets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K23/00—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors
    • H02K23/02—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors characterised by arrangement for exciting
    • H02K23/04—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors characterised by arrangement for exciting having permanent magnet excitation

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)
  • Dc Machiner (AREA)

Abstract

PURPOSE:To contrive to increase the total quantity of magnetic flux and to contrive to enhance performance and to prevent noise and vibration of a DC machine by a method wherein field poles are formed of a mixed member of a magnet having high coercive force and low magnetic flux density and a magnetic having lower coercive force and higher magnetic flux density than the former. CONSTITUTION:The permanent magnets 2 to be arranged and equipped in a yoke 1 are provided by pouring a material (magnetic powder) 21 having high coercive force and a material (magnetic powder) 22 having high residual magnetic flux density in a metal mold, performing formation in magnetic field as not to damage original characteristic at the end parts of magnet in condition being provided with the mixed part 23 of both the materials, and being cut in the prescribed form after baking.
JP13982980A 1980-10-08 1980-10-08 Dc machine Granted JPS5765262A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13982980A JPS5765262A (en) 1980-10-08 1980-10-08 Dc machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13982980A JPS5765262A (en) 1980-10-08 1980-10-08 Dc machine

Publications (2)

Publication Number Publication Date
JPS5765262A true JPS5765262A (en) 1982-04-20
JPS6255385B2 JPS6255385B2 (en) 1987-11-19

Family

ID=15254448

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13982980A Granted JPS5765262A (en) 1980-10-08 1980-10-08 Dc machine

Country Status (1)

Country Link
JP (1) JPS5765262A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5837779U (en) * 1981-09-01 1983-03-11 三菱電機株式会社 Field structure of ferrite magnet
JPH11355985A (en) * 1998-06-04 1999-12-24 Toshiba Corp Permanent magnet type motor
WO2001080400A3 (en) * 2000-04-19 2002-03-28 Crumax Magnetics Inc Permanent magnet stator assembly and method of manufacturing

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS523199A (en) * 1975-06-20 1977-01-11 Bosch Gmbh Robert Segment magnet and method of manufacture thereof

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS523199A (en) * 1975-06-20 1977-01-11 Bosch Gmbh Robert Segment magnet and method of manufacture thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5837779U (en) * 1981-09-01 1983-03-11 三菱電機株式会社 Field structure of ferrite magnet
JPH11355985A (en) * 1998-06-04 1999-12-24 Toshiba Corp Permanent magnet type motor
WO2001080400A3 (en) * 2000-04-19 2002-03-28 Crumax Magnetics Inc Permanent magnet stator assembly and method of manufacturing

Also Published As

Publication number Publication date
JPS6255385B2 (en) 1987-11-19

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