JPS56145761A - Permanent magnet type synchronous motor - Google Patents

Permanent magnet type synchronous motor

Info

Publication number
JPS56145761A
JPS56145761A JP4680580A JP4680580A JPS56145761A JP S56145761 A JPS56145761 A JP S56145761A JP 4680580 A JP4680580 A JP 4680580A JP 4680580 A JP4680580 A JP 4680580A JP S56145761 A JPS56145761 A JP S56145761A
Authority
JP
Japan
Prior art keywords
permanent magnet
power transmission
transmission shaft
protection case
synchronous motor
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
JP4680580A
Other languages
Japanese (ja)
Inventor
Koji Seshimo
Saburo Hasegawa
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 JP4680580A priority Critical patent/JPS56145761A/en
Publication of JPS56145761A publication Critical patent/JPS56145761A/en
Pending 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
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/27—Rotor cores with permanent magnets
    • H02K1/2706—Inner rotors
    • H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
    • H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
    • H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
    • H02K1/278—Surface mounted magnets; Inset magnets

Landscapes

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

Abstract

PURPOSE:To reduce the magnetic leakage in a permanent magnet type synchronous motor by disposing a plurality of permanent magnets of tile shape in a cylindrical protection case and press-fitting a power transmission shaft into the inside of a permanent magnet, thereby reducing the gap between the magnet and the stator. CONSTITUTION:Permanent magnets 2 of tile shape are disposed in a cylindrical protection case 1. Then, a power transmission shaft 3 is inserted into the inner diameter R3 of the permanent magnets 2. Since there is a relationship of (the inner diameter R1 of the protection case 1)-(the outer diameter R2 of the permanent magnet 2)<(the outer diameter R4 of the power transmission shaft 3)-(the inner diameter R3 of the permanent magnet 2), the permanent magnet 2 is expanded outwardly, and the protection case 1, the permanent magnet 2 and the power transmission shaft 3 are integrally secured. Thus, the gap between the stator and the permanent magnet can be reduced, and the leakage magnetic flux can be reduced.
JP4680580A 1980-04-11 1980-04-11 Permanent magnet type synchronous motor Pending JPS56145761A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4680580A JPS56145761A (en) 1980-04-11 1980-04-11 Permanent magnet type synchronous motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4680580A JPS56145761A (en) 1980-04-11 1980-04-11 Permanent magnet type synchronous motor

Publications (1)

Publication Number Publication Date
JPS56145761A true JPS56145761A (en) 1981-11-12

Family

ID=12757539

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4680580A Pending JPS56145761A (en) 1980-04-11 1980-04-11 Permanent magnet type synchronous motor

Country Status (1)

Country Link
JP (1) JPS56145761A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0386239A1 (en) * 1988-08-19 1990-09-12 Nauchno-Proizvodstvennoe Obiedinenie "Magneton" Multipole rotor of electric machine
JP2014030352A (en) * 2013-10-07 2014-02-13 Asmo Co Ltd Method of manufacturing rotor

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS557587B2 (en) * 1978-07-05 1980-02-26

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS557587B2 (en) * 1978-07-05 1980-02-26

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0386239A1 (en) * 1988-08-19 1990-09-12 Nauchno-Proizvodstvennoe Obiedinenie "Magneton" Multipole rotor of electric machine
JP2014030352A (en) * 2013-10-07 2014-02-13 Asmo Co Ltd Method of manufacturing rotor

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