JPS57106370A - Motor - Google Patents

Motor

Info

Publication number
JPS57106370A
JPS57106370A JP18249780A JP18249780A JPS57106370A JP S57106370 A JPS57106370 A JP S57106370A JP 18249780 A JP18249780 A JP 18249780A JP 18249780 A JP18249780 A JP 18249780A JP S57106370 A JPS57106370 A JP S57106370A
Authority
JP
Japan
Prior art keywords
arm
motor
ceramic
rotary
intrinsic vibration
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
JP18249780A
Other languages
Japanese (ja)
Inventor
Tomi Akiyama
Keiji Maruta
Akira Enomoto
Kazutaka Tomoto
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.)
Sony Corp
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Priority to JP18249780A priority Critical patent/JPS57106370A/en
Publication of JPS57106370A publication Critical patent/JPS57106370A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
    • H02K33/18—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with coil systems moving upon intermittent or reversed energisation thereof by interaction with a fixed field system, e.g. permanent magnets

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)

Abstract

PURPOSE:To obtain a motor having no composite resonance in a motor for a rotatably driving device for a reproducing head for an information recording rotary disc by employing ceramic for the material of a rotary arm, thereby enhancing the intrinsic vibration. CONSTITUTION:The intrinsic vibration f of a rotary arm 7 is represented as the equation. Where t: the thickness of arm, l: the length of the arm, p: specific weight of the arm, E: the Young modulus of the arm, I: inertial moment, k: spring constant, M: weight. When ceramic is used as the material of the arm, (E/rho)<1/2> increases, and the intrinsic vibration of the arm increases. Accordingly, when the ceramic is used for the material of the rotary arm, a motor having no composite resonance can be obtained. The servo band of the motor can be increased, and the servo characteristics and the stability of the motor can be improved.
JP18249780A 1980-12-22 1980-12-22 Motor Pending JPS57106370A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18249780A JPS57106370A (en) 1980-12-22 1980-12-22 Motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18249780A JPS57106370A (en) 1980-12-22 1980-12-22 Motor

Publications (1)

Publication Number Publication Date
JPS57106370A true JPS57106370A (en) 1982-07-02

Family

ID=16119319

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18249780A Pending JPS57106370A (en) 1980-12-22 1980-12-22 Motor

Country Status (1)

Country Link
JP (1) JPS57106370A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0498878U (en) * 1991-02-04 1992-08-26

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0498878U (en) * 1991-02-04 1992-08-26

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