JPS5622215A - Rotary head assembly - Google Patents

Rotary head assembly

Info

Publication number
JPS5622215A
JPS5622215A JP9821779A JP9821779A JPS5622215A JP S5622215 A JPS5622215 A JP S5622215A JP 9821779 A JP9821779 A JP 9821779A JP 9821779 A JP9821779 A JP 9821779A JP S5622215 A JPS5622215 A JP S5622215A
Authority
JP
Japan
Prior art keywords
cylinder
head
microgroove
height
minute
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.)
Granted
Application number
JP9821779A
Other languages
Japanese (ja)
Other versions
JPS6027096B2 (en
Inventor
Teruo Maruyama
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP9821779A priority Critical patent/JPS6027096B2/en
Priority to US06/109,491 priority patent/US4332428A/en
Priority to GB8000501A priority patent/GB2043182B/en
Priority to FR8000568A priority patent/FR2446953A1/en
Priority to CA343,739A priority patent/CA1132170A/en
Priority to DE3001432A priority patent/DE3001432C2/en
Publication of JPS5622215A publication Critical patent/JPS5622215A/en
Publication of JPS6027096B2 publication Critical patent/JPS6027096B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Sliding-Contact Bearings (AREA)

Abstract

PURPOSE: To obtain an accurate head height by constituting the fluid bearing by engaging the sleeve to instal its upper cylinder to the center shaft one end of which is fixed to the substrate and then providing the microgroove to make the rotary head part float up via the minute oil film.
CONSTITUTION: The cylinder of the VTR consists of the upper cylinder functioning as the rotary rotary head part, the head mounted to upper cylinder 28 and lower cylinder 30 each. This cylinder is fixed to lower housing 40 functioning as the substrate. On the other hand, upper end face 60 of the thrust bearing is made flat, and protruded part 100 of a minute diameter is provided at the center part of face 60 along with the microgroove formed on the surface of part 100 each. In such constitution, the relative position between center shaft 51 and reference surface S is constant even after assembly. Thus height H of head 29 can be kept in a high accuracy after assembly just by securing the accuracy of height for the tip part of shaft 51 from surface S since the floating extent of the surface of microgroove 55 is minute.
COPYRIGHT: (C)1981,JPO&Japio
JP9821779A 1979-01-16 1979-07-31 rotating head assembly Expired JPS6027096B2 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP9821779A JPS6027096B2 (en) 1979-07-31 1979-07-31 rotating head assembly
US06/109,491 US4332428A (en) 1979-01-16 1980-01-04 Rotary mechanism with axial bearings
GB8000501A GB2043182B (en) 1979-01-16 1980-01-08 Bearing assemblies
FR8000568A FR2446953A1 (en) 1979-01-16 1980-01-11 ROTATING MECHANISM PROVIDED WITH AXIAL LOADED BEARINGS
CA343,739A CA1132170A (en) 1979-01-16 1980-01-15 Rotary mechanism with axial bearings
DE3001432A DE3001432C2 (en) 1979-01-16 1980-01-16 Rotary mechanism with a fluid-lubricated axial bearing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9821779A JPS6027096B2 (en) 1979-07-31 1979-07-31 rotating head assembly

Publications (2)

Publication Number Publication Date
JPS5622215A true JPS5622215A (en) 1981-03-02
JPS6027096B2 JPS6027096B2 (en) 1985-06-27

Family

ID=14213796

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9821779A Expired JPS6027096B2 (en) 1979-01-16 1979-07-31 rotating head assembly

Country Status (1)

Country Link
JP (1) JPS6027096B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5917018A (en) * 1982-07-15 1984-01-28 Matsushita Electric Ind Co Ltd Fluid bearing device utilizing dynamic pressure type lubricating oil
WO1984000439A1 (en) * 1982-07-06 1984-02-02 Matsushita Electric Ind Co Ltd Rotary head assembly
JP2000041360A (en) * 1998-07-22 2000-02-08 Seiko Instruments Inc Liquid dynamic pressure bearing and spindle motor, hard disk drive apparatus and scanner motor using the bearing

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1984000439A1 (en) * 1982-07-06 1984-02-02 Matsushita Electric Ind Co Ltd Rotary head assembly
JPS5917018A (en) * 1982-07-15 1984-01-28 Matsushita Electric Ind Co Ltd Fluid bearing device utilizing dynamic pressure type lubricating oil
JP2000041360A (en) * 1998-07-22 2000-02-08 Seiko Instruments Inc Liquid dynamic pressure bearing and spindle motor, hard disk drive apparatus and scanner motor using the bearing

Also Published As

Publication number Publication date
JPS6027096B2 (en) 1985-06-27

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