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FR2268377A1 - DC motor with U-section pole pieces - has thin webs of pole pieces facing rotor and separating magnets - Google Patents

DC motor with U-section pole pieces - has thin webs of pole pieces facing rotor and separating magnets

Info

Publication number
FR2268377A1
FR2268377A1 FR7413292A FR7413292A FR2268377A1 FR 2268377 A1 FR2268377 A1 FR 2268377A1 FR 7413292 A FR7413292 A FR 7413292A FR 7413292 A FR7413292 A FR 7413292A FR 2268377 A1 FR2268377 A1 FR 2268377A1
Authority
FR
France
Prior art keywords
pole pieces
motor
section
rotor
thin webs
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
FR7413292A
Other languages
French (fr)
Other versions
FR2268377B1 (en
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.)
SACOBEL
Original Assignee
SACOBEL
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 SACOBEL filed Critical SACOBEL
Priority to FR7413292A priority Critical patent/FR2268377A1/en
Publication of FR2268377A1 publication Critical patent/FR2268377A1/en
Application granted granted Critical
Publication of FR2268377B1 publication Critical patent/FR2268377B1/fr
Granted legal-status Critical Current

Links

Classifications

    • 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
    • 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

Landscapes

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

Abstract

The D.C. motor pole pieces are in some soft magnetic material reducing demagnetisation effects and lowering the cost of tooling in motor manufacture. The stator (15) section is made up of alternating permanent magnets (17) of a ferrite or aluminium oxide - steel material in approximately parallelepiped form and spaced from each other by pole pieces (18) in some soft magnetic material. These pole pieces are U shaped with the webs (19) providing the thinnest section and facing the rotor. Lips at the rotor and shell face of the pole pieces serve to secure the permanent magnets and the whole assembly respectively tothe motor shell by screwed inserts.
FR7413292A 1974-04-17 1974-04-17 DC motor with U-section pole pieces - has thin webs of pole pieces facing rotor and separating magnets Granted FR2268377A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7413292A FR2268377A1 (en) 1974-04-17 1974-04-17 DC motor with U-section pole pieces - has thin webs of pole pieces facing rotor and separating magnets

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7413292A FR2268377A1 (en) 1974-04-17 1974-04-17 DC motor with U-section pole pieces - has thin webs of pole pieces facing rotor and separating magnets

Publications (2)

Publication Number Publication Date
FR2268377A1 true FR2268377A1 (en) 1975-11-14
FR2268377B1 FR2268377B1 (en) 1979-07-20

Family

ID=9137707

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7413292A Granted FR2268377A1 (en) 1974-04-17 1974-04-17 DC motor with U-section pole pieces - has thin webs of pole pieces facing rotor and separating magnets

Country Status (1)

Country Link
FR (1) FR2268377A1 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1982002802A1 (en) * 1981-02-03 1982-08-19 Corbach Rainer Electric machine,in particular small motor
EP0078012A1 (en) * 1981-10-21 1983-05-04 Hitachi, Ltd. Direct current dynamoelectric machine of permanent magnet type
EP0094978A1 (en) * 1982-05-24 1983-11-30 Magnet-Motor Gesellschaft für magnetmotorische Technik mbH Rotatable electrical machine
EP0096868A1 (en) * 1982-06-11 1983-12-28 Hitachi, Ltd. Permanent magnet type motor
EP0111740A1 (en) * 1982-11-13 1984-06-27 Hitachi, Ltd. Permanent magnet field type DC machine
US4491769A (en) * 1982-05-24 1985-01-01 Heidelberg Goetz Rotary electric machine
EP0134458A1 (en) * 1983-07-07 1985-03-20 Mitsubishi Denki Kabushiki Kaisha Stator for a magnet motor

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1982002802A1 (en) * 1981-02-03 1982-08-19 Corbach Rainer Electric machine,in particular small motor
US4445059A (en) * 1981-02-03 1984-04-24 Robert Bosch Gmbh Electric motor, in particular a small motor
EP0078012A1 (en) * 1981-10-21 1983-05-04 Hitachi, Ltd. Direct current dynamoelectric machine of permanent magnet type
EP0094978A1 (en) * 1982-05-24 1983-11-30 Magnet-Motor Gesellschaft für magnetmotorische Technik mbH Rotatable electrical machine
US4491769A (en) * 1982-05-24 1985-01-01 Heidelberg Goetz Rotary electric machine
EP0096868A1 (en) * 1982-06-11 1983-12-28 Hitachi, Ltd. Permanent magnet type motor
EP0111740A1 (en) * 1982-11-13 1984-06-27 Hitachi, Ltd. Permanent magnet field type DC machine
EP0134458A1 (en) * 1983-07-07 1985-03-20 Mitsubishi Denki Kabushiki Kaisha Stator for a magnet motor
US4554474A (en) * 1983-07-07 1985-11-19 Mitsubishi Denki Kabushiki Kaisha Stator for a magnet motor

Also Published As

Publication number Publication date
FR2268377B1 (en) 1979-07-20

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Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse