DE3842477C2 - Magnetische Fluiddichtungsanordnung - Google Patents
Magnetische FluiddichtungsanordnungInfo
- Publication number
- DE3842477C2 DE3842477C2 DE3842477A DE3842477A DE3842477C2 DE 3842477 C2 DE3842477 C2 DE 3842477C2 DE 3842477 A DE3842477 A DE 3842477A DE 3842477 A DE3842477 A DE 3842477A DE 3842477 C2 DE3842477 C2 DE 3842477C2
- Authority
- DE
- Germany
- Prior art keywords
- annular
- space
- sealing
- cover
- arrangement according
- 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.)
- Expired - Fee Related
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
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/762—Sealings of ball or roller bearings by means of a fluid
- F16C33/763—Sealings of ball or roller bearings by means of a fluid retained in the sealing gap
- F16C33/765—Sealings of ball or roller bearings by means of a fluid retained in the sealing gap by a magnetic field
-
- 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/40—Sealings between relatively-moving surfaces by means of fluid
- F16J15/43—Sealings between relatively-moving surfaces by means of fluid kept in sealing position by magnetic force
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
- Brushless Motors (AREA)
- Motor Or Generator Frames (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
- Sealing Of Bearings (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1988091670U JPH0713425Y2 (ja) | 1988-07-11 | 1988-07-11 | スピンドルモータ |
Publications (2)
Publication Number | Publication Date |
---|---|
DE3842477A1 DE3842477A1 (de) | 1990-01-18 |
DE3842477C2 true DE3842477C2 (de) | 1994-06-30 |
Family
ID=14032918
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE3842477A Expired - Fee Related DE3842477C2 (de) | 1988-07-11 | 1988-12-16 | Magnetische Fluiddichtungsanordnung |
Country Status (3)
Country | Link |
---|---|
US (1) | US5009436A (US07943777-20110517-C00090.png) |
JP (1) | JPH0713425Y2 (US07943777-20110517-C00090.png) |
DE (1) | DE3842477C2 (US07943777-20110517-C00090.png) |
Families Citing this family (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5155640A (en) * | 1990-05-03 | 1992-10-13 | Microscience International Corp. | Disk spindle motor cap |
US5134331A (en) * | 1990-05-31 | 1992-07-28 | Nippon Densan Corporation | Spindle motor |
US5214326A (en) * | 1990-09-01 | 1993-05-25 | Nippon Densan Corporation | Spindle motor with magnetic shield for magnetic fluid seal |
US5267737A (en) * | 1992-01-16 | 1993-12-07 | International Business Machines, Corp. | Magnetic fluid seal containment shield |
US5396134A (en) * | 1992-01-22 | 1995-03-07 | Nagano Nidec Corporation | Spindle motor |
US5402023A (en) * | 1992-08-07 | 1995-03-28 | Nippon Densan Corporation | Spindle motor and magnetic fluid seal apparatus used therefor |
US5367416A (en) * | 1992-12-31 | 1994-11-22 | International Business Machines Corporation | Spindle grounding device using magnetic fluid |
US5596235A (en) * | 1993-02-22 | 1997-01-21 | Nidec Corporation | Spindle motor with seal structure |
US5834870A (en) * | 1994-04-28 | 1998-11-10 | Hitachi, Ltd. | Oil impregnated porous bearing units and motors provided with same |
US5876037A (en) * | 1996-11-19 | 1999-03-02 | Ferrotec Corporation | Magnetic fluid sealing device |
US5975536A (en) * | 1997-09-30 | 1999-11-02 | Rigaku/Usa, Inc. | Rotary motion feedthrough with rotating magnet system |
JP4073064B2 (ja) * | 1997-12-02 | 2008-04-09 | 株式会社リガク | 耐磁場磁性流体シール装置 |
DE19849094C2 (de) * | 1998-10-24 | 2003-04-10 | Prec Motors Deutsche Minebea G | Spindelmotor mit Magnetdichtung |
US6229676B1 (en) * | 1998-11-13 | 2001-05-08 | International Business Machines Corporation | Ferrofluid seal for actuator bearing |
US6976682B1 (en) | 1999-01-22 | 2005-12-20 | Seagate Technology Llc | Apparatus and method for forming a rotatable ferrofluidic seal between a shaft and a hub |
DE20116252U1 (de) * | 2001-10-04 | 2002-07-25 | Precision Motors Deutsche Minebea GmbH, 78052 Villingen-Schwenningen | Spindelmotor mit Magnetfluiddichtung |
US6558042B1 (en) * | 2001-12-28 | 2003-05-06 | Sae Magnetics(H. K.) Ltd. | Bearing guided ferrofluid seal and seal carrier |
DE102006034966A1 (de) * | 2006-07-28 | 2008-01-31 | Schaeffler Kg | Wälz- oder Linearlager |
TW201204965A (en) * | 2010-07-23 | 2012-02-01 | qi-yun Gong | Sealing device |
KR101456809B1 (ko) * | 2011-02-03 | 2014-10-31 | 이글 고오교 가부시키가이샤 | 자성 유체 실 |
JP5797600B2 (ja) * | 2012-04-26 | 2015-10-21 | グローブライド株式会社 | 磁性流体シール付き軸受 |
DE102014014770B4 (de) * | 2014-10-10 | 2016-10-27 | Sew-Eurodrive Gmbh & Co Kg | Elektromotor mit einem Stator und Rotor |
JP7304206B2 (ja) * | 2019-05-31 | 2023-07-06 | ミネベアミツミ株式会社 | モータ |
DE102021105715B4 (de) | 2021-03-10 | 2022-10-20 | Schaeffler Technologies AG & Co. KG | Linearwälzlager |
Family Cites Families (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE851880C (de) * | 1948-12-23 | 1952-10-09 | Adolf Dr Razdowitz | Dichtung |
FR1178840A (fr) * | 1956-07-14 | 1959-05-15 | Philips Nv | Fermeture au moyen d'un aimant permanent d'une enceinte qui contient des particules magnétiques |
US3240341A (en) * | 1963-01-14 | 1966-03-15 | Rosaen Filter Co | Magnetized gasket assembly |
DE2034213C3 (de) * | 1969-10-10 | 1985-04-25 | Ferrofluidics Corp., Burlington, Mass. | Magnetdichtung zur Abdichtung von Dichtungsspalten |
US3834775A (en) * | 1972-05-26 | 1974-09-10 | Litton Systems Inc | Ferrohydrodynamic low-friction bearing with improved volume compensation and fluid seal |
DE2621352B2 (de) * | 1976-05-14 | 1979-03-08 | Fa. Carl Freudenberg, 6940 Weinheim | Magnetwellendichtung |
SU817352A1 (ru) * | 1978-03-06 | 1981-03-30 | Ивановский Энергетический Институт Им.B.И.Ленина | Подшипниковый узел |
US4293137A (en) * | 1978-12-11 | 1981-10-06 | Ezekiel Frederick D | Magnetic liquid shaft sealing |
SU773353A1 (ru) * | 1979-04-09 | 1980-10-23 | Предприятие П/Я А-3780 | Магнитно-жидкостное уплотнение вращающегос вала |
JPS56123757U (US07943777-20110517-C00090.png) * | 1980-02-20 | 1981-09-21 | ||
US4519010A (en) * | 1980-12-05 | 1985-05-21 | Papst-Motoren Gmbh & Co. Kg | Driving mechanism for magnetic hard disc memories |
GB2107004B (en) * | 1981-08-08 | 1985-07-24 | Nippon Telegraph & Telephone | A ferro fluidic seal |
US4486026A (en) * | 1982-02-10 | 1984-12-04 | Nippon Seiko K.K. | Sealing and bearing means by use of ferrofluid |
JPS5950275A (ja) * | 1982-09-16 | 1984-03-23 | Rigaku Keisoku Kk | 磁性流体軸封装置 |
US4407508A (en) * | 1982-12-16 | 1983-10-04 | Ferrofluidics Corporation | Single-pole-piece ferrofluid seal apparatus and exclusion seal system |
JPS6091066A (ja) * | 1983-10-26 | 1985-05-22 | Seiko Epson Corp | 磁性流体シ−ル機構 |
JPS6089756U (ja) * | 1983-11-28 | 1985-06-19 | 日本電産株式会社 | ブラシレスモ−タ |
US4526379A (en) * | 1984-01-09 | 1985-07-02 | Ferrofluidics Corporation | Stabilized ferrofluid-ferrofluid seal apparatus and method |
US4526382A (en) * | 1984-05-03 | 1985-07-02 | Ferrofluidics Corporation | Radially polarized multiple-stage ferrofluid seal apparatus |
US4502700A (en) * | 1984-05-03 | 1985-03-05 | Ferrofluidics Corporation | Ferrofluid linear seal apparatus |
US4565379A (en) * | 1984-05-26 | 1986-01-21 | Gmn Georg Muller Nurnberg Gmbh | Magnetic fluid seal |
JPS61112868A (ja) * | 1984-11-07 | 1986-05-30 | Tdk Corp | 磁性流体軸シ−ル |
JPS61266873A (ja) * | 1984-12-29 | 1986-11-26 | Nippon Fueroo Furuideikusu Kk | 磁性流体シ−ル装置 |
DE8518880U1 (de) * | 1985-06-26 | 1985-08-14 | Joh. Vaillant Gmbh U. Co, 5630 Remscheid | Deckwand für ein gasbeheiztes Gerät |
US4817964A (en) * | 1985-09-25 | 1989-04-04 | Ferrofluidics Corporation | Ferrofluid exclusion seal and method of assembly |
NL8601017A (nl) * | 1986-04-21 | 1987-11-16 | Skf Ind Trading & Dev | Wentellager. |
DE8805661U1 (de) * | 1988-04-29 | 1988-06-23 | Papst Licensing Gmbh, 78549 Spaichingen | Magnetische Flüssigkeitsdichtung |
-
1988
- 1988-07-11 JP JP1988091670U patent/JPH0713425Y2/ja not_active Expired - Lifetime
- 1988-12-15 US US07/284,736 patent/US5009436A/en not_active Expired - Lifetime
- 1988-12-16 DE DE3842477A patent/DE3842477C2/de not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE3842477A1 (de) | 1990-01-18 |
US5009436A (en) | 1991-04-23 |
JPH0214276U (US07943777-20110517-C00090.png) | 1990-01-29 |
JPH0713425Y2 (ja) | 1995-03-29 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE3842477C2 (de) | Magnetische Fluiddichtungsanordnung | |
DE3427677C2 (US07943777-20110517-C00090.png) | ||
EP0679230B1 (de) | Magnetlagerzelle mit rotor und stator | |
DE69123058T2 (de) | Läufer eines bürstenlosen motors | |
DE4138867C2 (de) | Schienenfahrzeug-Achsanordnung | |
DE3039255C2 (US07943777-20110517-C00090.png) | ||
DE3839731C2 (US07943777-20110517-C00090.png) | ||
DE3824104A1 (de) | Ferrofluid-dichtung | |
DE3300574A1 (de) | Direktantriebsmotor | |
DE4122711A1 (de) | Klemmvorrichtung fuer antriebswelle | |
DE3047606C2 (de) | Lageranordnung für einen länglichen, um seine Längsachse drehbaren Drehkörper | |
DE10044106C2 (de) | Spindelmotor mit Magnetfluiddichtung | |
DE19523789C2 (de) | Bürstenloser Elektromotor | |
DE19849094C2 (de) | Spindelmotor mit Magnetdichtung | |
DE3023677A1 (de) | Magnetgenerator fuer zuendanlagen | |
DE4215215C1 (de) | Paramagnetischer Gasdetektor mit drehbarer Küvette | |
DE2222109C2 (de) | Einrichtung zur Gewinnung eines von der Drehgeschwindigkeit abhängigen Signals | |
DE4103561A1 (de) | Drehstellungsgeber fuer die erfassung einer rotorposition | |
DE102015205581B4 (de) | Ferrofluiddichteinrichtung und elektrische Antriebsmaschine mit Ferrofluiddichteinrichtung | |
CH364549A (de) | Wirbelstrombremse | |
DE877346C (de) | Verschiebeanker-Motor | |
DE3939081C2 (US07943777-20110517-C00090.png) | ||
DE637217C (de) | Aus einer Wirbelstrombremse bestehender Drehzahlregler fuer Ferrarismotoren, insbesondere fuer den Antrieb von Sprechmaschinen | |
DE2122556C3 (de) | Gleichstrommaschine | |
DE2655499C2 (de) | Dichtungsanordnung für eine drehbar gelagerte Welle |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
8110 | Request for examination paragraph 44 | ||
D2 | Grant after examination | ||
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |