EP1514035A1 - Joint statique entre une couronne d'appui et un arbre - Google Patents

Joint statique entre une couronne d'appui et un arbre

Info

Publication number
EP1514035A1
EP1514035A1 EP03720758A EP03720758A EP1514035A1 EP 1514035 A1 EP1514035 A1 EP 1514035A1 EP 03720758 A EP03720758 A EP 03720758A EP 03720758 A EP03720758 A EP 03720758A EP 1514035 A1 EP1514035 A1 EP 1514035A1
Authority
EP
European Patent Office
Prior art keywords
seal
bearing
annular
resilient projection
annular recess
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.)
Withdrawn
Application number
EP03720758A
Other languages
German (de)
English (en)
Inventor
David Mark Williamson
Graham Sturman
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.)
Trelleborg Sealing Solutions UK Ltd
Timken Co
Original Assignee
Polymer Sealing Solutions Ltd
Timken Co
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 Polymer Sealing Solutions Ltd, Timken Co filed Critical Polymer Sealing Solutions Ltd
Publication of EP1514035A1 publication Critical patent/EP1514035A1/fr
Withdrawn legal-status Critical Current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
    • 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
    • F16C33/768—Sealings of ball or roller bearings between relatively stationary parts, i.e. static seals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B27/00—Hubs
    • 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
    • F16J15/02—Sealings between relatively-stationary surfaces
    • 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
    • F16C19/34—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 both radial and axial load
    • F16C19/36—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 both radial and axial load with a single row of rollers
    • F16C19/364—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 both radial and axial load with a single row of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone
    • 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
    • F16C2326/00—Articles relating to transporting
    • F16C2326/01—Parts of vehicles in general
    • F16C2326/02—Wheel hubs or castors

Definitions

  • the present invention relates to a seal for providing a seal between a bearing and a shaft on which it is fitted, such as a wheel axle shaft.
  • a wheel is mounted on the axle shaft via a roller bearing assembly which is fitted over the axle shaft.
  • the bearing assembly consists of inner and outer bearing races, known as bearing cones because of their inner conical faces on which the rollers run.
  • the inner bearing cone is fitted over a reduced diameter end portion of the axle shaft and its backface engages against an annular step on the axle shaft.
  • a seal is provided between the backface and the bearing cone to prevent leakage of axle lubricating oil, present in the small radial clearance between the axle shaft and the inner bearing cone, inboard of the bearing assembly, where it could contaminant other vehicle system components, such as brake system components.
  • a further purpose of the seal is to prevent the ingress of contaminants, particularly water, in the opposite direction. Such water would cause corrosion at the interface between the axle shaft and the bearing cone, causing interference to the removal of the hub assembly for routine servicing procedures, as. well as contaminating the axle lubricating oil.
  • the sealing device provided at the bearing cone backface in such applications consists of a standard O-ring sealing element, located either in a groove machined in the radius profile at the junction of the bore and backface of the bearing cone or in an annular groove machined in either the bearing cone backface or the face of the abutment shoulder of the axle shaft.
  • a standard O-ring sealing element located either in a groove machined in the radius profile at the junction of the bore and backface of the bearing cone or in an annular groove machined in either the bearing cone backface or the face of the abutment shoulder of the axle shaft.
  • a combination of a seal and a bearing comprising a body having an annular recess therein and a retention portion at the periphery of said annular recess, and the seal comprising an annular sealing member arranged to be received within said annular recess, the annular sealing member having a resilient projection arranged to co-operate with said retention portion to retain the seal within the annular recess and having an annular body portion having an outer peripheral surface from which said resilient projection extends, the annular body portion also having first and second shoulder portions, with at least one shoulder portion arranged to provide a seal with a surface in contact with said seal.
  • the resilient projection provides a snap-fit of said seal within said annular recess.
  • the shoulder portion is preferably such that when the seal is compressed it provides a good seal between the bearing and the shaft.
  • the seal comprises an internal stiffening member.
  • the internal stiffening member may be a metal ring.
  • the seal is symmetrical about a radial plane passing through said resilient projection.
  • the seal is manufactured from moulded rubber.
  • a seal for use with a bearing comprising an annular sealing member having a resilient projection arranged, in use, to co-operate with a portion of a bearing to retain the seal within said bearing, the annular sealing member having an annular body portion having an outer peripheral surface from which said resilient projection extends, the annular body portion also having first and second shoulder portions, with at least one shoulder portion arranged to provide a seal with a surface in contact with said seal.
  • the seal comprises any one or more of the preferred features of the seal of the combination according to the first aspect of the present invention.
  • Figure 1 illustrates a perspective view of a seal according to the present invention
  • Figure 2 schematically illustrates the seal of Figure 1 in use with a bearing cone according to the present invention.
  • Figure 3 illustrates an alternative embodiment of a seal according to the present invention.
  • the seal 1 shown in Figure 1 comprises an annular body portion 3 having an inner and outer peripheral surface. Extending from the outer peripheral surface of the seal 1 is a resilient lip 5.
  • the seal is preferably formed rom moulded rubber moulded around an internal insert that is preferably metal, although any rigid structure suitable for being moulded around with rubber may also be used.
  • the cross section of the seal 1 can be seen in Figure 2.
  • the cross section of the annular body portion 3 is substantially trapezoidal. Because of the trapezoidal shape, the annular body portion 3 is broader across its inner diameter i.e. closest to the shaft, and this has two broad shoulders, one of which 6 provides a seal between the bearing and the shaft. The other shoulder may also form a further seal against the bearing.
  • the narrower outer diameter of the body portion 3 is arranged such that when the seal is in use the narrower section of the body portion 3 is firmly located within the annular recess 13 due to the compressive forces acting on the seal. Also shown in Figure 2 is the location of the metal insert 7 within the annular body portion 3.
  • Figure 2 shows the seal 1 in use with a bearing cone 9 according to embodiments of the present invention and a axle shaft 11.
  • the bearing cone 9 has an annular recess 13 defined by the main body of the bearing cone 9 and a retention lip 15 of the bearing cone.
  • the seal 1 Prior to assembling the bearing cone 9 onto the axle shaft 11, the seal 1 is inserted into the annular recess 13 of the bearing cone.
  • the resilient lip 5 In order to locate the seal 1 within the annular recess 13, the resilient lip 5 is elastically deformed by the retention lip 15 of the bearing cone as the seal 1 is inserted within the annular recess 13. Once located within the annular recess 13, the resilient lip 5 tries to return to its original configuration but is prevented from doing so by the smaller internal diameter of the recess 13 in the bearing cone.
  • the deformation induced in the resilient lip 15 may also form a yet -further seal with the bearing.
  • the seal 1 is thus retained within the bearing cone 9, facilitating the easy assembly of the shaft and bearing arrangement.
  • the snap-fit nature of the seal 1 within the annular recess 13 of the bearing cone 9 further facilitates the assembly of the bearing cone and shaft assembly.
  • the resilient lip 5 On attempted removal of the seal 1 from the recess 13 the resilient lip 5 abuts against the retention lip 15 of the bearing cone 9, thus requiring a higher force to extract it than was necessary to insert it.
  • the seal 1 is preferably symmetrical about a radial plane. This ensures that the seal 1 can be fitted within the annular recess 13 in either possible orientation without any loss in seal performance.
  • Figure 3 shows an alternative arrangement for the seal 1.
  • the seal 1 has a body portion 3 a and a resilient lip 5a extending from the outer periphery of the body portion.
  • the seal 1 is symmetrical about a radial plane.
  • a circular internal insert 7a is located within the body portion 3a.
  • the cross-section of the body portion 3 a is approximately bell like, with convex side surfaces 8a' and 8a" extending from the resilient lip 5a and a slightly convex bottom surface 10a extending between the two side surfaces.
  • the intersection of the side surfaces 8a' and the bottom surface 10a forms a shoulder 6a in an analogous fashion to that of the trapezoidal seal 1 shown in Figure 2, the shoulder 6a serving the same sealing function. Again, the other shoulder may form a further seal against the bearing.
  • other designs of seal will also be suitable.

Landscapes

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

Abstract

L'invention concerne un joint à protubérance flexible qui s'étend depuis un élément d'étanchéité annulaire encliquetable avec une cavité annulaire dans un palier. La lèvre élastique subit une déformation élastique lorsqu'elle est insérée dans la cavité annulaire, et elle peut ainsi se maintenir dans la cavité. Le palier comporte une lèvre de retenue adjacente à la cavité, contre laquelle s'appuie la lèvre flexible du joint lorsqu'on tente de retirer le joint, et la force de retrait requise est ainsi augmentée.
EP03720758A 2002-05-10 2003-05-12 Joint statique entre une couronne d'appui et un arbre Withdrawn EP1514035A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB0210773A GB2388409B (en) 2002-05-10 2002-05-10 Seal
GB0210773 2002-05-10
PCT/GB2003/002035 WO2003095856A1 (fr) 2002-05-10 2003-05-12 Joint statique entre une couronne d'appui et un arbre

Publications (1)

Publication Number Publication Date
EP1514035A1 true EP1514035A1 (fr) 2005-03-16

Family

ID=9936455

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03720758A Withdrawn EP1514035A1 (fr) 2002-05-10 2003-05-12 Joint statique entre une couronne d'appui et un arbre

Country Status (7)

Country Link
EP (1) EP1514035A1 (fr)
JP (1) JP2005525518A (fr)
KR (1) KR20050071370A (fr)
CN (1) CN100380008C (fr)
AU (1) AU2003224333A1 (fr)
GB (1) GB2388409B (fr)
WO (1) WO2003095856A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6235256B2 (ja) * 2013-07-11 2017-11-22 Ntn株式会社 車輪用軸受装置
DE102015212067B4 (de) * 2015-06-29 2017-11-09 Schaeffler Technologies AG & Co. KG Wälzlagereinheit
JP6617455B2 (ja) * 2015-07-14 2019-12-11 株式会社ジェイテクト 車輪用軸受装置
JP6629802B2 (ja) * 2017-09-08 2020-01-15 Ntn株式会社 車輪用軸受装置

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3690684A (en) * 1970-10-27 1972-09-12 Gerland Soc Chimique Gaskets
FR2343191A1 (fr) * 1976-03-03 1977-09-30 Pont A Mousson Garniture a compression radiale
GB2071788B (en) * 1980-03-12 1984-04-18 Nippon Seiko Kk Sealing device for a rolling bearing
US4345739A (en) * 1980-08-07 1982-08-24 Barton Valve Company Flanged sealing ring
GB2219832A (en) * 1988-06-15 1989-12-20 West & Son Annular seal
DE9219044U1 (de) * 1992-03-04 1997-06-05 Skf Gmbh Vierreihiges Kegelrollenlager, insbesondere für Arbeitswalzen von Walzgerüsten
IT1281364B1 (it) * 1995-09-26 1998-02-18 Rft Spa Anello di tenuta e protezione perfezionato per un cuscinetto a rotolamento.
SE506574C2 (sv) * 1996-05-06 1998-01-12 Volvo Lastvagnar Ab Tätningsanordning för lagerarrangemang och arrangemang vid tätning av lageranordning
DE19704630C2 (de) * 1997-02-07 1999-08-12 Skf Linearsysteme Gmbh Radial-Dichtung
US5909880A (en) * 1997-02-21 1999-06-08 The Torrington Company Polymer bearing seal and sealed bearing
JPH1113771A (ja) * 1997-06-25 1999-01-22 Nippon Seiko Kk シールリング付転がり軸受
JPH11193795A (ja) * 1997-12-26 1999-07-21 Nippon Seiko Kk ウォータポンプ用軸受シール装置
US6126322A (en) * 1998-03-20 2000-10-03 Ntn Corporation Vehicle wheel supporting structure
FR2778954B1 (fr) * 1998-05-20 2000-06-23 Rks Sa Agencement d'etancheite pour un roulement
WO2001027484A1 (fr) * 1999-10-12 2001-04-19 The Timken Company Dispositif d'etancheite pour ensemble roulement
ES2235748T3 (es) * 2000-01-18 2005-07-16 Ina-Schaeffler Kg Junta elastica de estanqueidad para un seguidor de leva.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO03095856A1 *

Also Published As

Publication number Publication date
AU2003224333A8 (en) 2003-11-11
CN1692235A (zh) 2005-11-02
WO2003095856A1 (fr) 2003-11-20
GB2388409A (en) 2003-11-12
JP2005525518A (ja) 2005-08-25
KR20050071370A (ko) 2005-07-07
GB2388409B (en) 2005-08-31
GB0210773D0 (en) 2002-06-19
AU2003224333A1 (en) 2003-11-11
CN100380008C (zh) 2008-04-09

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Legal Events

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Designated state(s): DE FR GB SE

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: THE TIMKEN COMPANY

Owner name: TRELLEBORG SEALING SOLUTIONS UK LIMITED

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Effective date: 20060808

STAA Information on the status of an ep patent application or granted ep patent

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Effective date: 20090106