JPS5620830A - Rotation transmitting device - Google Patents

Rotation transmitting device

Info

Publication number
JPS5620830A
JPS5620830A JP9537679A JP9537679A JPS5620830A JP S5620830 A JPS5620830 A JP S5620830A JP 9537679 A JP9537679 A JP 9537679A JP 9537679 A JP9537679 A JP 9537679A JP S5620830 A JPS5620830 A JP S5620830A
Authority
JP
Japan
Prior art keywords
stepped
postures
difference
central shaft
stepped portions
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
JP9537679A
Other languages
Japanese (ja)
Inventor
Toshitoki Inoue
Teruo Maruyama
Masato Morimoto
Original Assignee
Matsushita Electric Ind 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 Matsushita Electric Ind Co Ltd filed Critical Matsushita Electric Ind Co Ltd
Priority to JP9537679A priority Critical patent/JPS5620830A/en
Publication of JPS5620830A publication Critical patent/JPS5620830A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C17/00Sliding-contact bearings for exclusively rotary movement
    • F16C17/10Sliding-contact bearings for exclusively rotary movement for both radial and axial load
    • F16C17/102Sliding-contact bearings for exclusively rotary movement for both radial and axial load with grooves in the bearing surface to generate hydrodynamic pressure
    • F16C17/107Sliding-contact bearings for exclusively rotary movement for both radial and axial load with grooves in the bearing surface to generate hydrodynamic pressure with at least one surface for radial load and at least one surface for axial load
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2370/00Apparatus relating to physics, e.g. instruments
    • F16C2370/12Hard disk drives or the like

Abstract

PURPOSE: To minimize a difference of postures and a driving torque by a method wherein a rotatable sleeve is engaged with a central shaft, adapted to a portable type VTR cylinder and fixed to a base plate, and a fluid lubricating bearing having stepped portions is formed between both of them.
CONSTITUTION: Stepped portions are formed on a central shaft 12 at an upper and a lower positions thereof and further spiral grooves 50, 51 are formed on the stepped portions. The upper stepped portion 22 is formed so as to be located at a position opposing to internal wall portions of an upper cylinder, a head or the like while the lower stepped portion 23 is formed so as to be located at a position opposing to an internal wall of a motor magnet. Consequently, an oil reservoir 25, having an ample clearance between a rotating sleeve and the central shaft 12, is formed at an intermediate portion 24 between the upper and lower stepped portions 22, 23. According to this constitution, a bearing radial clearance value, wherein the bearing radial clearance satisfies binding conditions with respect to a difference of postures and a load torque in a VTR cylinder may be obtained. Accordingly, the difference of postures and the driving torque may be minimized.
COPYRIGHT: (C)1981,JPO&Japio
JP9537679A 1979-07-26 1979-07-26 Rotation transmitting device Pending JPS5620830A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9537679A JPS5620830A (en) 1979-07-26 1979-07-26 Rotation transmitting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9537679A JPS5620830A (en) 1979-07-26 1979-07-26 Rotation transmitting device

Publications (1)

Publication Number Publication Date
JPS5620830A true JPS5620830A (en) 1981-02-26

Family

ID=14135915

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9537679A Pending JPS5620830A (en) 1979-07-26 1979-07-26 Rotation transmitting device

Country Status (1)

Country Link
JP (1) JPS5620830A (en)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS585518A (en) * 1981-07-01 1983-01-12 Nippon Seiko Kk Dynamic pressure spindle apparatus
JPS5850321A (en) * 1981-09-18 1983-03-24 Matsushita Electric Ind Co Ltd Bearing device
JPS5879448A (en) * 1981-11-05 1983-05-13 Fuji Photo Optical Co Ltd Rotating mechanism
JPS58134217A (en) * 1982-02-05 1983-08-10 Nippon Seiko Kk Dynamic pressure gas bearing device for rotary unit
JPS5917019A (en) * 1982-07-20 1984-01-28 Toshiba Corp Rotary body supporter
WO1984001464A1 (en) * 1982-09-30 1984-04-12 Matsushita Electric Ind Co Ltd Rotary head device with fluid bearing
WO1984001465A1 (en) * 1982-09-30 1984-04-12 Matsushita Electric Ind Co Ltd Rotary head cylinder with fluid bearing
JPS6066256U (en) * 1983-10-14 1985-05-10
JPS60195717A (en) * 1984-03-16 1985-10-04 Matsushita Electric Ind Co Ltd Fluid bearing cylinder device
JPS61236917A (en) * 1985-04-10 1986-10-22 Ebara Corp Bearing apparatus
JPS63196261A (en) * 1987-02-06 1988-08-15 Hakutsuru Syuzo Kk Decomposition of urea in fermented food
JPH01104155A (en) * 1986-10-14 1989-04-21 Getsukeikan Kk Improvement in quality of sake
US4844911A (en) * 1986-10-14 1989-07-04 Takeda Chemical Industries Quality improvement of alcoholic liquors
JPH01197691A (en) * 1988-02-02 1989-08-09 Anritsu Corp Timer device
JPH01234616A (en) * 1989-02-03 1989-09-19 Nippon Seiko Kk Dynamic pressure pneumatic bearing device for rotor
JPH01295654A (en) * 1988-05-20 1989-11-29 Matsushita Electric Ind Co Ltd Motor
JPH01312219A (en) * 1989-02-03 1989-12-18 Nippon Seiko Kk Rotary device rotating around fixed shaft
JPH0426917U (en) * 1990-06-27 1992-03-03
US5093255A (en) * 1987-07-09 1992-03-03 Takeda Chemical Industries, Ltd. Acid urease and production thereof
KR101141332B1 (en) 2010-08-05 2012-05-07 삼성전기주식회사 Fluid dynamic bearing assembly

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS585518A (en) * 1981-07-01 1983-01-12 Nippon Seiko Kk Dynamic pressure spindle apparatus
JPS5850321A (en) * 1981-09-18 1983-03-24 Matsushita Electric Ind Co Ltd Bearing device
JPS5879448A (en) * 1981-11-05 1983-05-13 Fuji Photo Optical Co Ltd Rotating mechanism
JPS58134217A (en) * 1982-02-05 1983-08-10 Nippon Seiko Kk Dynamic pressure gas bearing device for rotary unit
JPS5917019A (en) * 1982-07-20 1984-01-28 Toshiba Corp Rotary body supporter
JPH0520607B2 (en) * 1982-07-20 1993-03-22 Tokyo Shibaura Electric Co
WO1984001465A1 (en) * 1982-09-30 1984-04-12 Matsushita Electric Ind Co Ltd Rotary head cylinder with fluid bearing
WO1984001464A1 (en) * 1982-09-30 1984-04-12 Matsushita Electric Ind Co Ltd Rotary head device with fluid bearing
JPS6066256U (en) * 1983-10-14 1985-05-10
JPS60195717A (en) * 1984-03-16 1985-10-04 Matsushita Electric Ind Co Ltd Fluid bearing cylinder device
JPS61236917A (en) * 1985-04-10 1986-10-22 Ebara Corp Bearing apparatus
US4844911A (en) * 1986-10-14 1989-07-04 Takeda Chemical Industries Quality improvement of alcoholic liquors
JPH01104155A (en) * 1986-10-14 1989-04-21 Getsukeikan Kk Improvement in quality of sake
JPS63196261A (en) * 1987-02-06 1988-08-15 Hakutsuru Syuzo Kk Decomposition of urea in fermented food
US5093255A (en) * 1987-07-09 1992-03-03 Takeda Chemical Industries, Ltd. Acid urease and production thereof
JPH01197691A (en) * 1988-02-02 1989-08-09 Anritsu Corp Timer device
JPH01295654A (en) * 1988-05-20 1989-11-29 Matsushita Electric Ind Co Ltd Motor
JPH01312219A (en) * 1989-02-03 1989-12-18 Nippon Seiko Kk Rotary device rotating around fixed shaft
JPH0316530B2 (en) * 1989-02-03 1991-03-05 Nippon Seiko Kk
JPH01234616A (en) * 1989-02-03 1989-09-19 Nippon Seiko Kk Dynamic pressure pneumatic bearing device for rotor
JPH0426917U (en) * 1990-06-27 1992-03-03
KR101141332B1 (en) 2010-08-05 2012-05-07 삼성전기주식회사 Fluid dynamic bearing assembly

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