JPS5558852A - Abnormal rotation and racing prevention unit for turntable in magnetic recording and reproducing unit - Google Patents

Abnormal rotation and racing prevention unit for turntable in magnetic recording and reproducing unit

Info

Publication number
JPS5558852A
JPS5558852A JP13002078A JP13002078A JPS5558852A JP S5558852 A JPS5558852 A JP S5558852A JP 13002078 A JP13002078 A JP 13002078A JP 13002078 A JP13002078 A JP 13002078A JP S5558852 A JPS5558852 A JP S5558852A
Authority
JP
Japan
Prior art keywords
abnormal rotation
turntable
idler
arrow
drive
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
JP13002078A
Other languages
Japanese (ja)
Inventor
Kazumi Nagashima
Hiroyuki Tanimoto
Takamasa Yoshinari
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.)
SHINANO KIKAKU KK
SHINANO KIKAKU CO Ltd
Nidec Precision Corp
Original Assignee
SHINANO KIKAKU KK
Nidec Copal Corp
SHINANO KIKAKU CO 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 SHINANO KIKAKU KK, Nidec Copal Corp, SHINANO KIKAKU CO Ltd filed Critical SHINANO KIKAKU KK
Priority to JP13002078A priority Critical patent/JPS5558852A/en
Priority to PCT/JP1979/000270 priority patent/WO1980000892A1/en
Priority to NL7920099A priority patent/NL7920099A/en
Publication of JPS5558852A publication Critical patent/JPS5558852A/en
Priority to SU802942252A priority patent/SU974941A3/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
    • G11B17/00—Guiding record carriers not specifically of filamentary or web form, or of supports therefor
    • G11B17/02—Details
    • G11B17/022—Positioning or locking of single discs
    • G11B17/025—Positioning or locking of single discs of discs which are stationary during transducing operation
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B5/00—Electrically-operated educational appliances
    • G09B5/06—Electrically-operated educational appliances with both visual and audible presentation of the material to be studied
    • G09B5/062—Combinations of audio and printed presentations, e.g. magnetically striped cards, talking books, magnetic tapes with printed texts thereon
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B25/00—Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus
    • G11B25/04—Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus using flat record carriers, e.g. disc, card
    • G11B25/046—Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus using flat record carriers, e.g. disc, card using stationary discs, or cards provided with a circular recording area
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
    • G11B33/02—Cabinets; Cases; Stands; Disposition of apparatus therein or thereon
    • G11B33/06—Cabinets; Cases; Stands; Disposition of apparatus therein or thereon combined with other apparatus having a different main function

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Business, Economics & Management (AREA)
  • Physics & Mathematics (AREA)
  • Educational Administration (AREA)
  • Educational Technology (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Electrically Operated Instructional Devices (AREA)
  • Holding Or Fastening Of Disk On Rotational Shaft (AREA)
  • Transmission Devices (AREA)

Abstract

PURPOSE: To prevent the abnormal rotation and racing of turntable, by giving greater gear ratio between the drive shaft of driving flywheel and turntable.
CONSTITUTION: When the drive idler 16 is depressed toward the arrow B and it is closely located between the drive shaft 14a and the turntable 4 for the circumference, the drive force of the drive motor 13 is delivered with greater gear ratio in the order of the pulley 13a-belt 15-flywheel 14-drive shaft 14a-idler 16-table 4 to turn the table 4 toward the arrow D. When a force causing abnormal rotation toward the arrow D during constant rotation of the table 4 is exerted, the idler 16 is moved and the abnormal rotation and racing prevention idler 17 is sticked strongly between the shaft 14a and the table 4. As a result, since the gear ratio between the flywheel 14 and the table 4 is greater, brake effect is caused to avoid the abnormal rotation of the table 4. Further, when the force toward the arrow E is exerted on the table 4, the idler 17 is moved, 16 is sticked, allowing to prevent the abnormal rotation similarly.
COPYRIGHT: (C)1980,JPO&Japio
JP13002078A 1978-10-24 1978-10-24 Abnormal rotation and racing prevention unit for turntable in magnetic recording and reproducing unit Pending JPS5558852A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP13002078A JPS5558852A (en) 1978-10-24 1978-10-24 Abnormal rotation and racing prevention unit for turntable in magnetic recording and reproducing unit
PCT/JP1979/000270 WO1980000892A1 (en) 1978-10-24 1979-10-24 Educational magnetic reproduction apparatus
NL7920099A NL7920099A (en) 1978-10-24 1979-10-24 MAGNETIC SOUND REPRODUCING DEVICE FOR STUDY.
SU802942252A SU974941A3 (en) 1978-10-24 1980-06-23 Device for playing-back audio data during training

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13002078A JPS5558852A (en) 1978-10-24 1978-10-24 Abnormal rotation and racing prevention unit for turntable in magnetic recording and reproducing unit

Publications (1)

Publication Number Publication Date
JPS5558852A true JPS5558852A (en) 1980-05-01

Family

ID=15024170

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13002078A Pending JPS5558852A (en) 1978-10-24 1978-10-24 Abnormal rotation and racing prevention unit for turntable in magnetic recording and reproducing unit

Country Status (3)

Country Link
JP (1) JPS5558852A (en)
NL (1) NL7920099A (en)
SU (1) SU974941A3 (en)

Also Published As

Publication number Publication date
SU974941A3 (en) 1982-11-15
NL7920099A (en) 1980-08-29

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