DE8214244U1 - Sealed bearing bush, especially for universal joints - Google Patents

Sealed bearing bush, especially for universal joints

Info

Publication number
DE8214244U1
DE8214244U1 DE8214244U DE8214244DU DE8214244U1 DE 8214244 U1 DE8214244 U1 DE 8214244U1 DE 8214244 U DE8214244 U DE 8214244U DE 8214244D U DE8214244D U DE 8214244DU DE 8214244 U1 DE8214244 U1 DE 8214244U1
Authority
DE
Germany
Prior art keywords
bearing bush
support body
sealed bearing
face
universal joints
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
Application number
DE8214244U
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 Kugellagerfabriken GmbH
Publication date
Publication of DE8214244U1 publication Critical patent/DE8214244U1/en
Expired 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
    • F16C21/00Combinations of sliding-contact bearings with ball or roller bearings, for exclusively rotary movement
    • F16C21/005Combinations 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
    • 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
    • F16C33/00Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72Sealings
    • F16C33/76Sealings of ball or roller bearings
    • F16C33/78Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/7803Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings
    • F16C33/7809Sealings 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
    • 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
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/16Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
    • F16D3/26Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected
    • F16D3/38Hooke'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
    • F16D3/382Hooke'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
    • F16D3/385Bearing cup; Bearing construction; Bearing seal; Mounting of bearing on the intermediate member
    • 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
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/16Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
    • F16D3/26Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected
    • F16D3/38Hooke'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
    • F16D3/40Hooke'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 with intermediate member provided with two pairs of outwardly-directed trunnions on intersecting axes
    • F16D3/41Hooke'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 with intermediate member provided with two pairs of outwardly-directed trunnions on intersecting axes with ball or roller bearings
    • 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
    • F16C2361/00Apparatus or articles in engineering in general
    • F16C2361/41Couplings
    • 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
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2300/00Special features for couplings or clutches
    • F16D2300/08Details or arrangements of sealings not provided for in group F16D3/84

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sealing Of Bearings (AREA)

Description

SKF KUGELLAGERFABRIKEN GMBH Schweinfurt, 29.04.82SKF KUGELLAGERFABRIKEN GMBH Schweinfurt, April 29th, 1982

DE 82 019 DE TPA.bl.trDE 82 019 DE TPA.bl.tr

Abgedichtete Lagerbüchse, insbesondere für KreuzgelenkeSealed bearing bush, especially for universal joints

Die vorliegende Neuerung betrifft eine abgedichtete
Lagerbüchse, insbesondere für Kreuzgelenke, die einen mit der Lagerbüchse verbundenen Tragkörper und einen
daran angeordneten Dichtungsring mit mindestens einer axial vorstehenden Dichtlippe aufweist.
The present innovation relates to a sealed one
Bearing bush, in particular for universal joints, which have a supporting body connected to the bearing bush and a
has arranged thereon sealing ring with at least one axially protruding sealing lip.

Eine derartige Abdichtung für Lagerbüchsen von Kreuzgelenken ist durch die DE-OS 2 313 091 bekanntgeworden. Bei dieser bekannten Ausführung ist der Tragkörper am abgestuften Ende des Mantels der Lagerbüchse befestigt und erstreckt sich in axialer Richtung über die Stirnfläche der Lagerbüchse hinaus. Somit benötigt die Kreuzgelenkbüchse mit der aufgesetzten Dichtung in axialer Richtung verhältnismäßig viel Platz. Ferner kann dasSuch a seal for bearing bushes of universal joints has become known from DE-OS 2,313,091. In this known embodiment, the support body is attached to the stepped end of the shell of the bearing bush and extends in the axial direction beyond the end face of the bearing bush. Thus the universal joint bushing needs With the attached seal, there is a relatively large amount of space in the axial direction. Furthermore, this can

verbrauchte Fett nur verhältnismäßig schwer durch den engen Spalt zwischen dem Dichtungsring und dem Kreuzgelenkzapfen herausgepreßt werden.consumed grease is relatively difficult due to the narrow gap between the sealing ring and the universal joint pin be squeezed out.

-2--2-

Aufgäbe der vorliegenden Neuerung ist es, eine abgedichtete Lagerbüchse der eingangs genannten Art so zu verbessern, daß die Lagerbüchse mit der Dichtung in axialer Richtung wenig Platz einnimmt und ein leichtes Nachschmieren des Lagers möglich ist, ohne daß sich die Dichtlippe von ihrer Dichtfläche abhebt.The task of the present innovation is to provide a sealed To improve bearing bush of the type mentioned so that the bearing bush with the seal in axial direction takes up little space and a slight relubrication of the bearing is possible without it the sealing lip lifts off its sealing surface.

Zur Lösung dieser Aufgabe wird neuerungsgemäß vorgeschlagen, daß der Tragkörper mit dem Dichtungsring in der Bohrung der Lagerbüchse axial verschiebbar angeordnet und mit einem radial nach außen gerichteten Flansch versehen ist, der der Stirnfläche der Lagerbüchse gegenüberliegt. Auf diese Weise kann sich der Lagerträger mit dem Dichtungsring beim Einpressen von Schmiermittel entgegen der Federkraft einer Dichtlippe in axialer Richtung verschieben, wobei ein Ringspalt geöffnet wird, aus dem das verbrauchte Schmiermittel entweichen kann.To solve this problem it is proposed according to the innovation, that the support body with the sealing ring is arranged and axially displaceable in the bore of the bearing bush is provided with a radially outwardly directed flange which lies opposite the end face of the bearing bush. In this way, the bearing bracket with the sealing ring can counteract when lubricant is pressed in Shift the spring force of a sealing lip in the axial direction, opening an annular gap from which the consumed Lubricant can escape.

Damit der Ringspalt zwischen der Stirnfläche der Lagerbüchse und dem Flansch des Tragkörpers nach dem Abschmieren wieder gut verschlossen wird, ist, nach einem weiteren Merkmal der Neuerung, zwischen Lagerbüchse und dem Flansch des Tragkörpers eine axial elastisch verfqrmbare Dichtscheibe vorgesehen, die sich nach dem Abschmieren an die Stirnfläche der Lagerbüchse anlegt.So that the annular gap between the end face of the bearing bush and the flange of the support body is well closed again after lubrication is, according to a Another feature of the innovation, between the bearing bush and the flange of the support body, an axially elastic verqrmbare Sealing washer is provided which, after lubrication, rests against the face of the bearing bush.

Nach einem weiteren Merkmal der Neuerung weist der Tragkörper am Mantel mehrere am Umfang verteilt angeordnete, axial gerichtete, von der Stirnfläche bis zum radial nach außen gerichteten Flansch des Tragkörpers verlaufende Nuten auf. Durch diese Nuten wird das verbrauchte Schmier-' fett nach außen geleitet.According to a further feature of the innovation, the support body on the jacket several distributed around the circumference, axially directed, from the end face to the radially outwardly directed flange of the support body extending grooves. Through these grooves the used lubricant ' fat directed to the outside.

-3--3-

Ferner besitzt die Lagerbüchse am offenen Ende im Bereich des Tragkörpers einen umlaufenden, radial nach innen gerichteten Vorsprung, der in eine ringförmige Ausdrehung am Mantel des Tragkörpers einschnappt, so daß die Lagerteile auch im nicht eingebauten Zustand zusammengehalten werden.Furthermore, at the open end in the region of the support body, the bearing bush has a circumferential, radially inwardly directed Projection which snaps into an annular recess on the jacket of the support body, so that the bearing parts be held together even when not installed.

Ein Ausführungsbeispiel der Neuerung ist in der Zeichnung dargestellt und wird nachstehend näher beschrieben.An embodiment of the innovation is shown in the drawing and is described in more detail below.

Es zeigen:Show it:

Fig. 1 einen Teilschnitt einer Lagerbüchse für Kreuzgelenke mit der neuerungsgemäßen Abdichtung,Fig. 1 is a partial section of a bearing bush for universal joints with the seal according to the innovation,

Fig. 2 einen Teilschnitt einer Lagerbüchse gemäß Fig. beim Abschmieren des Lagers.FIG. 2 shows a partial section of a bearing bush according to FIG. When the bearing is lubricated.

Der Kreuzgelenkzapfen 1 ist in der Lagerbüchse 2 über die zylindrischen Wälzkörper 3 gelagert. Die Lagerbüchse 2 weist an ihrem einen Ende einen Boden 4 auf, an dem an der Innenseite 5 eine Anlaufscheibe 6 aus einem gleitgünstigen Material anliegt, die zur axialen Abstützung des Kreuzgelenkzapfens 1 dient. Am offenen Ende ist die Lagerbüchse 2 mit einem umlaufenden, radial nach innen gerichteten Vorsprung 7 und einer gegenüber der Laufbahn abgesetzten Bonrungsfläche 8 versehen, an der eine Sitzfläche 9 des Tragkörpers 10 axial verschiebbar anliegt . Beim Einbau des Tragkörpers 10 wird der Vorsprung 7 in eine ringförmige Ausdrehung 11 des Tragkörpers 10 eingeschnappt. Der Tragkörper 10 besitzt einen radial nach innen gerichteten Flansch 12, auf dem der Dichtungsring 13 radial verschiebbar aufgesetzt ist. Die Dichtlippe 14 des Dichtungsringes 13 liegt mit Vorspannung an einer Schulter 15 des Kreuzgelenkzapfens 1 an.The universal joint pin 1 is mounted in the bearing bush 2 via the cylindrical rolling elements 3. The bearing bush 2 has at its one end a bottom 4, on which a thrust washer 6 made of a slidable slide on the inside 5 Material is applied, which serves to axially support the universal joint pin 1. At the open end is that Bearing bush 2 with a circumferential, radially inwardly directed projection 7 and one opposite the raceway provided offset Bonrungsfläche 8, on which a seat 9 of the support body 10 is axially displaceable . When installing the support body 10, the projection 7 into an annular recess 11 in the support body 10 snapped. The support body 10 has a radially inwardly directed flange 12 on which the sealing ring 13 is placed radially displaceable. The sealing lip 14 of the sealing ring 13 is pretensioned on a shoulder 15 of the universal joint pin 1.

-4--4-

111 · I 1111 · I 1

-A--A-

Zwischen der Stirnfläche 16 der Lagerbüchse 2 und einem radial nach außen gerichteten Flansch 17 des Tragkörpers 10 befindet sich eine in axialer Richtung elastische Dichtungsscheibe 18, die zusammen mit dem Dichtungsring 13 während des Betriebs ein Austreten des Schmiermittels und ein Eindringen von Schmutz verhindert. Beim Abschmieren des Lagers wird, wie aus der Figur 2 zu ersehen ist, der Tragkörper 10 durch den Abschmierdruck unter elastischer Verformung der Dichtlippe 14 axial aus der Lagerbüchse 2 herausgeschoben, bis ein Spalt 19 zwischen der Dichtungsscheibe 18 und der Stirnfläche 16 der Lagerbüchse 2 entsteht, aus dem das verbrauchte Fett durch mehrere axial verlaufende Nuten 20 am Mantel des Tragkörpers 10, die von der Stirnfläche 21 bis zum Flansch 17 des Tragkörpers 10 verlaufen, herausgedrückt wird. Nach dem Abschmieren schiebt sich der Tragkörper 10 durch die Federkraft der Dichtlippe 14 in die Lagerbüchse 2 zurück, bis die Dichtscheibe 18 an der Stirnfläche 16 zur Anlage kommt.Between the end face 16 of the bearing bush 2 and one radially outwardly directed flange 17 of the support body 10 there is a sealing washer 18 which is elastic in the axial direction and which, together with the sealing ring 13 prevents leakage of lubricant and penetration of dirt during operation. When lubricating of the bearing, as can be seen from FIG. 2, the support body 10 becomes more elastic due to the lubrication pressure Deformation of the sealing lip 14 axially out of the bearing bush 2 pushed out until there is a gap 19 between the sealing washer 18 and the end face 16 of the bearing bush 2 arises, from which the used grease through several axially extending grooves 20 on the jacket of the support body 10, which extend from the end face 21 to the flange 17 of the support body 10 run, is pushed out. After lubrication the support body 10 is pushed back into the bearing bush 2 by the spring force of the sealing lip 14 until the sealing washer 18 comes to rest on the end face 16.

Die Neuerung ist nicht auf das vorstehend beschriebene Ausführungsbeispiel beschränkt. Änderungen in der Konstruktion der einzelnen Bauteile sind im Rahmen der Neuerung ohne weiteres möglich. So kann z.B. die Dichtungsscheibe 18 zwischen der Lagerbüchse 2 und dem Flansch 17 des Tragkörpers 10 weggelassen und am Flansch 17 des Tragkörpers 10 eine Dichtlippe (nicht gezeichnet) angeformt werden.The innovation is not limited to the exemplary embodiment described above. Changes in construction of the individual components are easily possible within the framework of the innovation. For example, the sealing washer 18 between the bearing bush 2 and the flange 17 of the support body 10 is omitted and a sealing lip (not shown) is formed on the flange 17 of the support body 10 will.

Claims (4)

• · · I SKF KÜGELLAGERFABRIKEN GMBH Schweinfurt, 29.04.82 DE 82 019 DE TPA.bl.tr Abgedichtete Lagerbüchse, insbesondere für Kreuzgelenke Schutz anspräche• · · I SKF KÜGELLAGERFABRIKEN GMBH Schweinfurt, 04/29/82 DE 82 019 DE TPA.bl.tr Sealed bearing bush, especially for universal joints protection claims 1. Abgedichtete Lagerbüchse, insbesondere für Kreuzgelenke, die einen mit der Lagerbüchse verbundenen Tragkörper und einen daran befestigten Dichtungsring mit mindestens einer axial elastisch verformbaren Dichtlippe aufweist, dadurch gekennzeichnet, daß der Tragkörper (10) mit dem Dichtungsring (13) in der Bohrung der Lagerbüchse (2) axial verschiebar angeordnet und mit einem radial nach außen gerichteten Flansch (17) versehen ist, der der Stirnfläche (16) der Lagerbüchse (2) gegenüber1ie gt.1. Sealed bearing bush, especially for universal joints, one with the bearing bush connected to the support body and a sealing ring attached to it having at least one axially elastically deformable sealing lip, characterized in that the Support body (10) with the sealing ring (13) in the bore of the bearing bush (2) axially displaceable and with a radially outwardly directed flange (17) is provided that the end face (16) of the bearing bush (2) opposite1ie gt. 2. Abgedichtete Lagerbüchse nach Anspruch 1, dadurch gekennzeichnet, daß zwischen der Stirnfläche (16) der Lagerbüchse (2) und dem Flansch (17) des Tragkörpers2. Sealed bearing bush according to claim 1, characterized in that that between the end face (16) of the bearing bush (2) and the flange (17) of the support body (10) eine axial elastisch verformbare Dichtscheibe (18) vorgesehen ist.(10) an axially elastically deformable sealing washer (18) is provided. 3. Abgedichtete Lagerbüchse nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Tragkörper (10) am Mantel mehrere am Umfang verteilt angeordnete, axial gerichtete, von der Stirnfläche 21 bis zum radialen Flansch (17) des Tragkörpers (10) verlaufende Nuten (20) aufweist.3. Sealed bearing bush according to claim 1 or 2, characterized characterized in that the supporting body (10) on the jacket has a plurality of axially arranged distributed around the circumference directed grooves extending from the end face 21 to the radial flange (17) of the support body (10) (20). -2--2- -2--2- 4. Abgedichtete Lagerbüchse nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Lagerbüchse 2 am offenen Ende im Bereich des Tragkörpers 10 einer umlaufenden, radial nach innen gerichteten Vorsprung 7 aufweist, der in einer ringförmigen Ausdrehung (11) am Mantel des Tragkörpers (10) angeordnet ist.4. Sealed bearing bush according to one of claims 1 to 3, characterized in that the bearing bush 2 at the open end in the area of the support body 10 a circumferential, radially inwardly directed projection 7, which in an annular recess (11) is arranged on the jacket of the support body (10).
DE8214244U Sealed bearing bush, especially for universal joints Expired DE8214244U1 (en)

Publications (1)

Publication Number Publication Date
DE8214244U1 true DE8214244U1 (en) 1982-08-26

Family

ID=1330216

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8214244U Expired DE8214244U1 (en) Sealed bearing bush, especially for universal joints

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DE (1) DE8214244U1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0089458A2 (en) * 1982-03-18 1983-09-28 Firma Carl Freudenberg Radial shaft sealing ring
EP0108186A2 (en) * 1982-10-11 1984-05-16 Firma Carl Freudenberg Rotary shaft seal

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0089458A2 (en) * 1982-03-18 1983-09-28 Firma Carl Freudenberg Radial shaft sealing ring
EP0089458A3 (en) * 1982-03-18 1985-01-23 Firma Carl Freudenberg Radial shaft sealing ring
EP0108186A2 (en) * 1982-10-11 1984-05-16 Firma Carl Freudenberg Rotary shaft seal
EP0108186A3 (en) * 1982-10-11 1985-03-06 Firma Carl Freudenberg Rotary shaft seal

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