JPS55132568A - Turn table drive unit for record player - Google Patents

Turn table drive unit for record player

Info

Publication number
JPS55132568A
JPS55132568A JP4009479A JP4009479A JPS55132568A JP S55132568 A JPS55132568 A JP S55132568A JP 4009479 A JP4009479 A JP 4009479A JP 4009479 A JP4009479 A JP 4009479A JP S55132568 A JPS55132568 A JP S55132568A
Authority
JP
Japan
Prior art keywords
disc
motor
turn table
drive unit
record player
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
JP4009479A
Other languages
Japanese (ja)
Inventor
Masao Kawachi
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP4009479A priority Critical patent/JPS55132568A/en
Publication of JPS55132568A publication Critical patent/JPS55132568A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/20—Driving; Starting; Stopping; Control thereof

Landscapes

  • Rotational Drive Of Disk (AREA)

Abstract

PURPOSE:To drive the disc without direct coupling to motor, by opposing the pole surface of permanent magnet at the circumference of the Al disc embodied with the turn table, and developing the torque to the Al disc with the magnetic flux from the permanent magnet turned with the revolution of the drive motor and the eddy current induced on the Al disc. CONSTITUTION:The motor 2 is fixed to the chassis 1, the turn table 3 is supported movably via the rotary shaft 3a and the bearings 4a, 4b, and the Al disc is fitted unifiedly. To the rotary shaft of the motor 2, the permanent magnets 6a, 6b are fitted with the coupling 7 together with the flanges 5a, 5b by clipping the spacer 8, to fastening the Al disc 11. When the motor 2 turns, since the magnetic flux of the permanent magnets 6a, 6b is interlinked with the Al disc 11, eddy current is induced on the disc 11 to produce a torque to the disc 11, and the turn table 3 is turned accompanied with it. Since no vibration of the motor 2 is delivered to the turn table 3, stable revolution can be obtained.
JP4009479A 1979-04-03 1979-04-03 Turn table drive unit for record player Pending JPS55132568A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4009479A JPS55132568A (en) 1979-04-03 1979-04-03 Turn table drive unit for record player

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4009479A JPS55132568A (en) 1979-04-03 1979-04-03 Turn table drive unit for record player

Publications (1)

Publication Number Publication Date
JPS55132568A true JPS55132568A (en) 1980-10-15

Family

ID=12571283

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4009479A Pending JPS55132568A (en) 1979-04-03 1979-04-03 Turn table drive unit for record player

Country Status (1)

Country Link
JP (1) JPS55132568A (en)

Similar Documents

Publication Publication Date Title
JPS6464165A (en) Disk driving use spindle motor
ES8101326A1 (en) X-ray tube having a magnetically supported rotary anode
JPS5688660A (en) Flat coreless motor with tachometer generator built-in
JPS55132568A (en) Turn table drive unit for record player
JPS5597172A (en) Face-opposed motor
ES8104672A1 (en) Rotary force generator
JPS5583449A (en) Motor
JPS5651021A (en) Magnetic head driving device in rotary head type magnetic recording and reproducing apparatus
JPS5593531A (en) Rotary cylinder unit
JPS6467760A (en) Spindle motor for disk drive
SE8206803D0 (en) ELECTROMAGNETIC INDICATOR HAVING A ROTOR DISPOSABLE IN DISCRETE POSITIONS
JPS56140562A (en) Floating type turntable
JPS57138856A (en) Rotor for motor
GB2093277B (en) Electric motor
JPS5612831A (en) Tubular potary electric machine
JPS6447253A (en) Spindle motor of magnetic disc unit
ES485382A1 (en) Magnetic motor
JPS5579670A (en) Dc motor
JPS56148758A (en) Reel take-up mechanism of magnetic recorder and reproducer
JPS56148757A (en) Reel take-up mechanism of magnetic recorder and reproducer
JPS639264Y2 (en)
JPS55147966A (en) Commutatorless motor
JPS5372108A (en) Permanent magnet type electric rotary machine
JPS57132745A (en) Rotating speed detector for motor
JPS55153153A (en) Magnetic recording and reproducing device