JPH0468460U - - Google Patents

Info

Publication number
JPH0468460U
JPH0468460U JP10980390U JP10980390U JPH0468460U JP H0468460 U JPH0468460 U JP H0468460U JP 10980390 U JP10980390 U JP 10980390U JP 10980390 U JP10980390 U JP 10980390U JP H0468460 U JPH0468460 U JP H0468460U
Authority
JP
Japan
Prior art keywords
bearing
bracket
dynamic pressure
pair
fluid dynamic
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
JP10980390U
Other languages
Japanese (ja)
Other versions
JP2536647Y2 (en
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 filed Critical
Priority to JP1990109803U priority Critical patent/JP2536647Y2/en
Publication of JPH0468460U publication Critical patent/JPH0468460U/ja
Application granted granted Critical
Publication of JP2536647Y2 publication Critical patent/JP2536647Y2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C21/00—Combinations of sliding-contact bearings with ball or roller bearings, for exclusively rotary movement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C17/00—Sliding-contact bearings for exclusively rotary movement
    • F16C17/02—Sliding-contact bearings for exclusively rotary movement for radial load only
    • F16C17/026—Sliding-contact bearings for exclusively rotary movement for radial load only with helical grooves in the bearing surface to generate hydrodynamic pressure, e.g. herringbone grooves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
    • F16C19/16—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls
    • F16C19/163—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls with angular contact
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2370/00—Apparatus relating to physics, e.g. instruments
    • F16C2370/12—Hard disk drives or the like

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本考案の一実施例を示す要部断面図、
第２図は他の実施例の要部断面図、第３図は傾斜
溝の一例の拡大説明図である。 Ｂ……軸受手段、Ｆ……予圧用スラスト力、１
ａ，１ｂ……シヤフト、２……ロータ、７……傾
斜溝、８……流体動圧軸受、１０……玉軸受、１
２……ブラケツト、１３……円筒部。 FIG. 1 is a cross-sectional view of essential parts showing an embodiment of the present invention;
FIG. 2 is a sectional view of a main part of another embodiment, and FIG. 3 is an enlarged explanatory view of an example of an inclined groove. B... Bearing means, F... Thrust force for preload, 1
a, 1b... Shaft, 2... Rotor, 7... Inclined groove, 8... Fluid dynamic pressure bearing, 10... Ball bearing, 1
2...Bracket, 13...Cylindrical part.

Claims (1)

【実用新案登録請求の範囲】 ブラケツトと、該ブラケツトに対して相対的に
回転自在であるハブと、該ブラケツトと該ハブと
の間に介在された一対の軸受手段と具備するスピ
ンドルモータにおいて、 該一対の軸受手段の片方は玉軸受から構成され
、それらの他方は流体動圧軸受から構成され、該
流体動圧軸受は回転時に該玉軸受にスラスト力を
付与するための溝を含んでいることを特徴とする
スピンドルモータ。[Claims for Utility Model Registration] A spindle motor comprising a bracket, a hub rotatable relative to the bracket, and a pair of bearing means interposed between the bracket and the hub, One of the pair of bearing means is composed of a ball bearing, and the other of them is composed of a fluid dynamic pressure bearing, and the fluid dynamic pressure bearing includes a groove for applying a thrust force to the ball bearing during rotation. A spindle motor featuring:
JP1990109803U 1990-10-18 1990-10-18 Spindle motor Expired - Fee Related JP2536647Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1990109803U JP2536647Y2 (en) 1990-10-18 1990-10-18 Spindle motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1990109803U JP2536647Y2 (en) 1990-10-18 1990-10-18 Spindle motor

Publications (2)

Publication Number Publication Date
JPH0468460U true JPH0468460U (en) 1992-06-17
JP2536647Y2 JP2536647Y2 (en) 1997-05-21

Family

ID=31857062

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1990109803U Expired - Fee Related JP2536647Y2 (en) 1990-10-18 1990-10-18 Spindle motor

Country Status (1)

Country Link
JP (1) JP2536647Y2 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58174967U (en) * 1982-05-14 1983-11-22 株式会社東芝 Light deflection motor
JPS61101467U (en) * 1984-12-07 1986-06-28

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58174967U (en) * 1982-05-14 1983-11-22 株式会社東芝 Light deflection motor
JPS61101467U (en) * 1984-12-07 1986-06-28

Also Published As

Publication number Publication date
JP2536647Y2 (en) 1997-05-21

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