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DE9005935U1 - Sealing, especially for universal joint bearings - Google Patents

Sealing, especially for universal joint bearings

Info

Publication number
DE9005935U1
DE9005935U1 DE9005935U DE9005935U DE9005935U1 DE 9005935 U1 DE9005935 U1 DE 9005935U1 DE 9005935 U DE9005935 U DE 9005935U DE 9005935 U DE9005935 U DE 9005935U DE 9005935 U1 DE9005935 U1 DE 9005935U1
Authority
DE
Germany
Prior art keywords
seal
universal joint
bearing bush
ring
sealing
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 - Lifetime
Application number
DE9005935U
Other languages
German (de)
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.)
SKF GmbH
Original Assignee
SKF GmbH
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 SKF GmbH filed Critical SKF GmbH
Priority to DE9005935U priority Critical patent/DE9005935U1/en
Publication of DE9005935U1 publication Critical patent/DE9005935U1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/7803—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings
    • F16C33/7809—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings for needle roller bearings
    • 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
    • F16C21/005—Combinations of sliding-contact bearings with ball or roller bearings, for exclusively rotary movement the external zone of a bearing with rolling members, e.g. needles, being cup-shaped, with or without a separate thrust-bearing disc or ring, e.g. for universal joints
    • 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
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/7886—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted outside the gap between the inner and outer races, e.g. sealing rings mounted to an end face or outer surface of a race
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
    • F16D3/26—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected
    • F16D3/38—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected with a single intermediate member with trunnions or bearings arranged on two axes perpendicular to one another
    • F16D3/382—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected with a single intermediate member with trunnions or bearings arranged on two axes perpendicular to one another constructional details of other than the intermediate member
    • F16D3/385—Bearing cup; Bearing construction; Bearing seal; Mounting of bearing on the intermediate member
    • 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
    • F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
    • F16J15/3232—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip having two or more lips
    • 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
    • F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
    • F16C19/24—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly
    • F16C19/28—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly with two or more rows of rollers
    • 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
    • F16C2361/00—Apparatus or articles in engineering in general
    • F16C2361/41—Couplings

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)

Description

SKF G ab H Schweinfurt, 17. 5. 1990SKF G from H Schweinfurt, 17. 5. 1990

.".I··· ·· P.E 90 013 DE STSP-bl.ne.".I··· ·· P. E 90 013 DE STSP-bl.ne

&igr;"·&iacgr;"&igr;"·&iacgr;"

BeschreibungDescription

Abdichtung, insbesondere für Lager von KreuzgelenkenSealing, especially for universal joint bearings

f: Di«=· ürfindrmg bezieht sich *i ' eine Abdichtung, insbesondere »j für l?.ger von Kreuzgelenken, "ie aus ;-:ner äußeren Dichtungr. &bgr; die zwischen dem offenen Ende einer lagerbuchse oder dgl. und f: The term "sealing" refers to a seal, in particular for universal joints, consisting of an external seal which is located between the open end of a bearing bush or the like and

fc einer Schulter das in dem Lager ^~&Lgr; .jert ;i Maschinenteils •| angeord; ^t. ist und einem inneren Dichtungsring besteht.fc a shoulder which is arranged in the bearing ^~&Lgr; . jert ;i machine part •| and an inner sealing ring.

Abdichtungen der &ngr; rstehend beschriebenen Gattung sind z.B. durch das DE-GM 86 21 426 bekannt. Die Dichtlippen dieser -&egr;''-annten Abdichtungen verschleißen jedoch nach einer gewissen Zeit, so daß sie ausgewechselt werden müssen.Seals of the type described above are known, for example, from DE-GM 86 21 426. However, the sealing lips of these seals wear out after a certain time, so that they must be replaced.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, eine Abdichtung, der eingangs genannten Art zu schaffen, die während der gesamten Gebrauchsdauer des Lagers eine optimale Dichtwirkung besitzt.The present invention is based on the object of creating a seal of the type mentioned at the beginning, which has an optimal sealing effect throughout the entire service life of the bearing.

Diese Aufgabe wird dadurch gelöst, daß der innere Rand der äußeren Dichtung auf der den Walzkörpern zugewandten Seite eine kegelige Anlagefläche aufweist und daß ein O-Ring aus einem elastischen Werkstoff auf der kegeligen Anlagefläche und der Bohrungsfläche der Lagerbüchse unter Vorspannung anliegend angeordnet ist. Die Erfindung löst die gestellte Aufgabe mit besonders einfachen Mitteln.This object is achieved in that the inner edge of the outer seal has a conical contact surface on the side facing the rolling elements and in that an O-ring made of an elastic material is arranged under prestress on the conical contact surface and the bore surface of the bearing bush. The invention solves the problem with particularly simple means.

Gemäß einer besonders bevorzugten Ausbildung der Erfindung ist zwischen dem O-Ring und einer Stützscheibe eine Tellerfeder vorgesehen, die den O-Ring an die kegelige Anlagefläche derAccording to a particularly preferred embodiment of the invention, a disc spring is provided between the O-ring and a support disk, which presses the O-ring against the conical contact surface of the

1 III· » I ■■■I 1 III· » I ■■■I

Dichtung und an die Bohrungsfläche der Lagerbüchse anstellt. Ferner hat die Tellerfeder die Aufgabe, die Wälzkörper über die Stützscheibs an eine am Boden der Lagerbüchse angeordnete Anlaufscheibe anzustellen.Seal and against the bore surface of the bearing bush. The disc spring also has the task of positioning the rolling elements via the support disk against a thrust disk arranged on the bottom of the bearing bush.

Die Stütsscheibe besitzt nach «&iacgr;,&udigr;«" eiteren Merkmal der Erfindung eine kegelige Bohrung und ist auf einem kegeligenAccording to another feature of the invention, the support disk has a conical bore and is mounted on a conical

.chnitt des in dem Lager gelagerten Maschinenteils angeordnet, so daß sich die Stützscheibe in Richtung zum Lagerbüchsenboden verschieben kann. Bei größeren axialen Verschiebungen in entgegengesetzter Richtung kommt diu Stützscheibe an dem kegeligen Abschnitt des Zapfens zur Anlage. Hierdurch wird erreicht, deß der O-Ring nicht zu stark zusammengedrückt und zerstört werden kann..section of the machine part mounted in the bearing, so that the support disk can move in the direction of the bearing bush base. In the case of larger axial displacements in the opposite direction, the support disk comes into contact with the tapered section of the journal. This ensures that the O-ring cannot be compressed too much and destroyed.

Die Erfindung wird nachstehend anhand der Beschreibung eines in der Zeichnung dargestellten Ausführungsbeispiels näher veranschaulicht.The invention is illustrated in more detail below with reference to the description of an embodiment shown in the drawing.

Die Figur zeigt ein Lager für Kreuzgelenke mit der erfindungsgemäßen Abdichtung im Axialschnitt.The figure shows a bearing for universal joints with the sealing according to the invention in axial section.

Die Lagerbüchse 1 ist in der Bohrung einer Kreuzgelenkgabel (nicht gezeichnet) angeordnet. Zwischen der Bohrungsfläche der Lagerbüchse J und dem Kreuzgelenkzapfen 3 sind zwei Reihen von Zylinderrollen 4, 5 eingesetzt. Die dem Boden 6 der Lagerbüchse 1 zugewandten Rollen 4 laufen an einer Kunststoffscheibe 7 an, welche auf der Bodenfläche 8 der Lagerbüchse 1 angeordnet ist. Der Boden 6 der Lagerbüchse weist einen sentrisch angeordneten Vorsprung 9 mit einer /Anlauffläche 10 für den Kreuzgelenkzapfen 3 auf. Ein Ringraum 11 zwischen dem Kreuzgelenkzapfon 3 und der Lagerbüchse 1 dient als Schmiermittelrese.voir für die WMIz- und Gleitflächen. Din Abdichtung der Lagerbüchse 1 erfolgt durch eine Dichtung 12 und einen O-Ring 13 aus einem elastischen Werkstoff. Die Dichtung 12 besteht aus einer Blechscheibe 14, die am äußersn Rand einen abgewinkelten Abschnitt 14a aufweist, der den Räml u«r LäyöirbüchSö 1 mitThe bearing bush 1 is arranged in the bore of a universal joint fork (not shown). Two rows of cylindrical rollers 4, 5 are inserted between the bore surface of the bearing bush 1 and the universal joint pin 3. The rollers 4 facing the bottom 6 of the bearing bush 1 run against a plastic disk 7 which is arranged on the bottom surface 8 of the bearing bush 1. The bottom 6 of the bearing bush has a centrally arranged projection 9 with a contact surface 10 for the universal joint pin 3. An annular space 11 between the universal joint pin 3 and the bearing bush 1 serves as a lubricant reservoir for the bearing and sliding surfaces. The bearing bush 1 is sealed by a seal 12 and an O-ring 13 made of an elastic material. The seal 12 consists of a sheet metal disk 14, which has an angled section 14a on the outer edge, which seals the frame and the leaflet 1 with

Spiel umfaßt und in eine Ringnut 15 der Lagerbüchse 1 eingreift. Der innere Rand fler Bieohscheibe 14 ist knyelig ausgeführt und besitzt am Mantel des abgewinkelten Abschnitts 16 eine kegelige Anlacref lMche 17 für den O-Ring 13, der von einer Tellerfeder 18 spielfrei an die AnlayeflJ! &EEacgr; 17 der Blechscheibe 14 und an die Bohrungsflache 2 der Lagerbüchse 1 angestellt wird, so daß eine sich selbst nachstellende Abdichtung entsteht und im Beitrieb keinplay and engages in an annular groove 15 of the bearing bush 1. The inner edge of the sheet metal disk 14 is knurled and has a conical attachment hole 17 on the jacket of the angled section 16 for the O-ring 13, which is positioned by a disk spring 18 without play against the attachment hole 17 of the sheet metal disk 14 and against the bore surface 2 of the bearing bush 1, so that a self-adjusting seal is created and no

r·—1 2 ^a-J 1 U —..&agr; r·—1 2 ^aJ 1 U —..&agr;

Lager gelangen können. In der Bohrung dor Blechscheibe 14 ist ein Kunststoffring 19 befestigt, der auf einem kegeligen Ab ,chnitt 20 des Kreuzgeleiikzapfens 3 aufgeschoben ist und die Blechscheibe 14 mit dem Kreuzgelenkzapfen .'! drehfest vorbindet Die Tellerfeder 18 liegt en einer Stützscheibe 21 an, über welche die Wälzkörper 4, 5 an die Kunststoffscheibe 7 angestellt werden. Der Stützring 21 ist mit einer kegeligen Bohrungsfläche 22 versehen, die bei größeren axialen Verschiebungen zum offenen Ende der Lagerbüchse 1 hin an dem kegeligen Abschnitt 20 des Kreuzgelenkzapfens 3 zur Anlaqe gelangt und die axiale Bewegung abstoppt.A plastic ring 19 is fastened in the bore of the sheet metal disk 14, which is pushed onto a tapered section 20 of the universal joint pin 3 and connects the sheet metal disk 14 to the universal joint pin in a rotationally fixed manner. The plate spring 18 rests on a support disk 21, via which the rolling elements 4, 5 are positioned against the plastic disk 7. The support ring 21 is provided with a tapered bore surface 22, which, in the event of larger axial displacements towards the open end of the bearing bush 1, comes into contact with the tapered section 20 of the universal joint pin 3 and stops the axial movement.

>-&Rgr;&iacgr;»1-»»-&idigr;&idiagr;»·>/-»*»-&Rgr;/~&igr;·&ngr;-&Ggr;&Lgr; e4-ol 1 +■ r-»nv &agr;&idigr; &eegr;>-&Rgr;&iacgr;»1-»»-&idigr;&idiagr;»·>/-»*»-&Rgr;/~&igr;·&ngr;-&Ggr;&Lgr; e4-ol 1 +■ r-»nv &agr;&idigr;&eegr;

einer erfindungsgemäßen Abdichtung dar. Änderungen in der Konstruktion der einzelnen Bauteile sind im Rahmen der Erfindung ohne weiteres möglich. Außerdem ist diese Abdichtung nicht nur für Kreuzgelenklager, sondern auch für andere Lagerarten verwendbar.a seal according to the invention. Changes in the design of the individual components are easily possible within the scope of the invention. In addition, this seal can be used not only for universal joint bearings, but also for other types of bearings.

Claims (3)

1. Abdichtung, insbesondere für Lager von Kreuzgelenken, bestehend aus einer äußeren Dichtung, die zwischen dem offenen Ende einer Lagerbüchse oder dgl. und einer Schulter des in dem Lager gelagerten Maschinenteils angeordnet ist und einem inneren Dichtungsring, dadurch gekennzeichnet, daß der innere Rand der Dichtung (12) auf der den Wälzkörpern (5) zugewandten Seite eine kegelige Anlagefläche (17) aufweist und daß ein O-Ring (13) aus einem elastischen Werkstoff auf der kegeligen Anlagefläche (17) und der Bohrungsfläche (2) der Lagerbüchse (1) unter Vorspannung anliegend angeordnet ist.1. Seal, in particular for universal joint bearings, consisting of an outer seal which is arranged between the open end of a bearing bush or the like and a shoulder of the machine part mounted in the bearing and an inner sealing ring, characterized in that the inner edge of the seal (12) has a conical contact surface (17) on the side facing the rolling elements (5) and that an O-ring (13) made of an elastic material is arranged on the conical contact surface (17) and the bore surface (2) of the bearing bush (1) under prestress. 2. Abdichtung nach Anspruch 1, dadurch gekennzeichnet, daß eine Tellerfeder (18) zwischen dem O-Ring (13) und einer Stützscheibe (21) angeordnet ist.2. Seal according to claim 1, characterized in that a disc spring (18) is arranged between the O-ring (13) and a support disk (21). 3. Abdichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Stützscheibe (21) eine kegelige Bohrung (22) aufweist und auf einem kegeligen Abschnitt (20) des Maschinenteils (3) angeordnet ist.3. Seal according to claim 1 or 2, characterized in that the support disk (21) has a conical bore (22) and is arranged on a conical section (20) of the machine part (3).
DE9005935U 1990-05-25 1990-05-25 Sealing, especially for universal joint bearings Expired - Lifetime DE9005935U1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE9005935U DE9005935U1 (en) 1990-05-25 1990-05-25 Sealing, especially for universal joint bearings

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE9005935U DE9005935U1 (en) 1990-05-25 1990-05-25 Sealing, especially for universal joint bearings

Publications (1)

Publication Number Publication Date
DE9005935U1 true DE9005935U1 (en) 1990-07-05

Family

ID=6854113

Family Applications (1)

Application Number Title Priority Date Filing Date
DE9005935U Expired - Lifetime DE9005935U1 (en) 1990-05-25 1990-05-25 Sealing, especially for universal joint bearings

Country Status (1)

Country Link
DE (1) DE9005935U1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4408831A1 (en) * 1994-03-16 1995-09-21 Schaeffler Waelzlager Kg Bearing cover for universal joint
DE19626864A1 (en) * 1996-07-04 1998-01-08 Schaeffler Waelzlager Kg Travel roller with roller-bearing
DE10102302A1 (en) * 2001-01-19 2002-08-01 Elbe & Sohn Gmbh & Co Kg G Sealing system for universal joints or double universal joints
WO2003025410A1 (en) * 2001-09-14 2003-03-27 Ina-Schaeffler Kg Bearing for universal joint pins
DE20307396U1 (en) 2003-05-13 2003-07-24 AB SKF, Göteborg/Gotenburg Sealing arrangement for sealing a gap between a bearing bush and a pin
DE10253474A1 (en) * 2002-11-16 2004-06-03 Aktiebolaget Skf Bearing unit with an integral sealing element incorporates at least one sealing lip which by means of a spring element acting in the axial direction of the bearing unit is preloaded against an inner race zone

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4408831A1 (en) * 1994-03-16 1995-09-21 Schaeffler Waelzlager Kg Bearing cover for universal joint
DE19626864A1 (en) * 1996-07-04 1998-01-08 Schaeffler Waelzlager Kg Travel roller with roller-bearing
DE10102302A1 (en) * 2001-01-19 2002-08-01 Elbe & Sohn Gmbh & Co Kg G Sealing system for universal joints or double universal joints
EP1225355A3 (en) * 2001-01-19 2002-11-20 G. Elbe & Sohn GmbH & Co. KG Seal device for a bearing of an universal joint
WO2003025410A1 (en) * 2001-09-14 2003-03-27 Ina-Schaeffler Kg Bearing for universal joint pins
US7178984B2 (en) 2001-09-14 2007-02-20 Ina-Schaeffler Kg Bearing arrangement for supporting a trunnion of an universal joint
DE10253474A1 (en) * 2002-11-16 2004-06-03 Aktiebolaget Skf Bearing unit with an integral sealing element incorporates at least one sealing lip which by means of a spring element acting in the axial direction of the bearing unit is preloaded against an inner race zone
DE10253474B4 (en) * 2002-11-16 2006-07-20 Aktiebolaget Skf bearing arrangement
DE20307396U1 (en) 2003-05-13 2003-07-24 AB SKF, Göteborg/Gotenburg Sealing arrangement for sealing a gap between a bearing bush and a pin

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