JPS5716562A - Motor for driving magnetic disc - Google Patents

Motor for driving magnetic disc

Info

Publication number
JPS5716562A
JPS5716562A JP9000680A JP9000680A JPS5716562A JP S5716562 A JPS5716562 A JP S5716562A JP 9000680 A JP9000680 A JP 9000680A JP 9000680 A JP9000680 A JP 9000680A JP S5716562 A JPS5716562 A JP S5716562A
Authority
JP
Japan
Prior art keywords
boss
wheels
integrally
yokes
magnetic disc
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
JP9000680A
Other languages
Japanese (ja)
Inventor
Hiroshi Saito
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.)
Nidec Advanced Motor Corp
Original Assignee
Japan Servo Corp
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 Japan Servo Corp filed Critical Japan Servo Corp
Priority to JP9000680A priority Critical patent/JPS5716562A/en
Publication of JPS5716562A publication Critical patent/JPS5716562A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
    • H02K21/24—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets axially facing the armatures, e.g. hub-type cycle dynamos

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Brushless Motors (AREA)

Abstract

PURPOSE:To suppress the occurrence of eddy current loss to low value by constructing to integrally rotate pair yokes with a permanent magnet. CONSTITUTION:A shaft 3 is fixedly implanted on a stationary base 11, the inner wheels of two spherical bearings 10, 10' are so secured to the upper and lower outer peripheral positions of a shaft 2 at both sides of a spacer 11, and the two bearings 10, 10' are so arranged that the outer peripheral surfaces of the outer wheels are intimately contacted with the upper and lower positions of the inner peripheral surface of a hollow boss 3. A spiral spring 12 for prepressing axially is inserted between the two outer wheels. A cylindrical hub 4 is mounted integrally with the outer upper peripheral end of the boss 3. A magnetic disc 13 is mounted on the upper end of the hub 4, and an annular permanent magnet 6 magnetized in multiple poles in axial direction is secured via a magnet yoke 5 to the lower end face. Further, pair yokes 7 are integrally mounted on the lower outer periphery of the boss 3. A stator coil 17 is fixedly arranged on the lower surface of the mounting board 9.
JP9000680A 1980-07-03 1980-07-03 Motor for driving magnetic disc Pending JPS5716562A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9000680A JPS5716562A (en) 1980-07-03 1980-07-03 Motor for driving magnetic disc

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9000680A JPS5716562A (en) 1980-07-03 1980-07-03 Motor for driving magnetic disc

Publications (1)

Publication Number Publication Date
JPS5716562A true JPS5716562A (en) 1982-01-28

Family

ID=13986534

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9000680A Pending JPS5716562A (en) 1980-07-03 1980-07-03 Motor for driving magnetic disc

Country Status (1)

Country Link
JP (1) JPS5716562A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59178936A (en) * 1983-03-28 1984-10-11 Takahashi Yoshiteru Rotary polyphase mirror scanner
JPH02223365A (en) * 1989-02-22 1990-09-05 Sony Corp Spindle motor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59178936A (en) * 1983-03-28 1984-10-11 Takahashi Yoshiteru Rotary polyphase mirror scanner
JPH02223365A (en) * 1989-02-22 1990-09-05 Sony Corp Spindle motor

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