WO2009012758A1 - Dispositif d'étanchéité pour palier de rotation - Google Patents

Dispositif d'étanchéité pour palier de rotation Download PDF

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Publication number
WO2009012758A1
WO2009012758A1 PCT/DE2008/001186 DE2008001186W WO2009012758A1 WO 2009012758 A1 WO2009012758 A1 WO 2009012758A1 DE 2008001186 W DE2008001186 W DE 2008001186W WO 2009012758 A1 WO2009012758 A1 WO 2009012758A1
Authority
WO
WIPO (PCT)
Prior art keywords
sheet metal
metal ring
sealing device
sealing
latching
Prior art date
Application number
PCT/DE2008/001186
Other languages
German (de)
English (en)
Inventor
Darius Dlugai
Jens Heim
Peter Niebling
Original Assignee
Schaeffler Kg
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 Schaeffler Kg filed Critical Schaeffler Kg
Publication of WO2009012758A1 publication Critical patent/WO2009012758A1/fr

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
    • 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
    • F16J15/3268—Mounting of sealing rings
    • F16J15/3276—Mounting of sealing rings with additional static sealing between the sealing, or its casing or support, and the surface on which it is mounted
    • 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
    • F16C33/7869—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted with a cylindrical portion to the inner surface of the outer race and having a radial portion extending inward
    • F16C33/7879—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted with a cylindrical portion to the inner surface of the outer race and having a radial portion extending inward with a further sealing ring
    • F16C33/7883—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted with a cylindrical portion to the inner surface of the outer race and having a radial portion extending inward with a further sealing ring mounted to the inner race and of generally L-shape, the two sealing rings defining a sealing with box-shaped cross-section
    • 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
    • F16J15/3248—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports
    • F16J15/3252—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports with rigid casings or supports
    • F16J15/3256—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports with rigid casings or supports comprising two casing or support elements, one attached to each surface, e.g. cartridge or cassette seals
    • F16J15/3264—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports with rigid casings or supports comprising two casing or support elements, one attached to each surface, e.g. cartridge or cassette seals the elements being separable from each other

Definitions

  • the invention relates to a sealing device for a rotary bearing, with two in the partial cross-section substantially L-shaped, relatively movable sheet metal rings, wherein at least on a sheet metal ring, a seal is arranged with sealing lips.
  • Rotary bearings such as rolling bearings, are used in various embodiments in virtually all fields of technology to support a rotating component on a fixed other component.
  • a roller bearing is known, for example, two or more races, between which a rolling element bearing WälzMechhimfig is arranged.
  • a lubricating be introduced as an oil or a fat, in order to further reduce the friction of the individual components with each other.
  • a sealing device In order to prevent leakage of this lubricant and the ingress of contaminants in the rolling bearing, it is known to equip the rolling bearing with a sealing device.
  • a sealing device Such an elastic and annular seal is known for example from DE 84 28 429 U1, which is used in an annular groove of an inner race.
  • a first sealing lip of the elastomeric seal slidably abuts the associated end face of the outer race.
  • the elastomeric seal has an axially aligned collar which projects into a gap between the outer and the inner race of the rolling bearing. On the collar another, directed out of the gap out sealing lip is formed, which rests against the inner circumferential surface of the outer race, so that the gap is reliably closed.
  • a sealing device for a rolling bearing with a reinforced sealing disc is known, which is attached to an outer bearing ring and engages with its radially inner end in an undercut of an inner bearing ring and is supported by a sealing edge on a wall of the undercut ,
  • a sealing lip of the sealing device is designed such that during a rotation of the sealing disc, a centrifugally controlled bias of the sealing lip is obtained.
  • DE 10 2005 035 027 A1 discloses a sealing device for a rotary bearing, in which an elastomeric body is arranged on an annular carrier. These two components are made of different non-metallic materials.
  • the carrier and the elastomeric body can be manufactured in a single operation as an injection molded part.
  • the sealing device is designed as a cartridge seal, wherein the carrier and the elastomeric body with a so-called angle ring a sealing module form.
  • two sealing lips of the elastomeric body are axially or radially on the directed to the rolling elements of the bearing side of the angle ring dense.
  • the angle ring is inserted during assembly of the cassette seal in a central opening formed by the elastomeric body and held there by the bias of the sealing lips.
  • DE 38 22 816 A1 discloses a sealing device for a rolling bearing with two in the partial cross section in each case substantially L-shaped sheet metal parts, wherein at least on one of the two sheet metal parts, an elastic seal is arranged with sealing lips to a mutual sealing of these sheet metal parts and a cohesion for to achieve transport and assembly in the warehouse.
  • a radially inwardly projecting projection is integrally formed on an axially inner end of an axial leg of this sheet metal ring, which can engage in a groove on the shaft.
  • the invention is therefore an object of the invention to provide a multi-part sealing device for a pivot bearing, during their transport, their Mounting on a pivot bearing and handling of the equipped with the sealing device pivot bearing reliably remains mechanically intact.
  • the sealing device should also preferably be designed so that the at least one sealing lip of the sealant always bears sealingly against the angle ring.
  • the invention is based on the finding that the stated object can be achieved if the multi-part sealing device deviating from known technical solutions has additional means by which a falling apart of the same is reliably prevented in an unwanted force.
  • a latching connection is provided according to the invention, which securely holds the components of the sealing device together after their assembly in positive engagement.
  • the invention according to the features of claim 1 from a sealing device for a pivot bearing, preferably for a roller bearing, with two in the partial cross-section substantially L-shaped and relatively movable sheet metal rings, wherein at least on a sheet metal ring, an elastic sealing means is arranged with sealing lips , to ensure the desired mechanical integrity and sealing effect of the sealing device during transport, when it is installed in a warehouse and during its handling and operation is also provided that a latching connection is provided on the two metal rings, which secures the two metal rings axially to each other.
  • An advantage of the sealing device according to the invention is that a sealing of the roller bearing can be reliably ensured by means of its latching connection, since the individual components, in particular a radially outer and a radially inner metal ring and an interposed therebetween netes elastic sealant are held in their axial positions relative to each other. This avoids, inter alia, that a sealing lip of the preferably elastomeric sealing means jumps off an associated component of the sealing device and thus the rolling bearing or the sealing device becomes unusable.
  • the elastic sealing means at least partially surrounds the first sheet-metal ring, and that at least one latching lug is formed on the sealing means, which in the assembled state holds the second sheet-metal ring axially within the first sheet-metal ring.
  • the at least one latching nose cooperates with a portion of the surface of the second, preferably radially inner, sheet metal ring.
  • the first sheet metal ring is preferably a radially outer sheet metal ring to which the elastic sealing means is fastened
  • the second sheet metal ring is a radially inner sheet metal ring which is also referred to by experts as an angle ring.
  • the second, preferably radially inner sheet metal ring a further seal is present, for example, from the same material as the first elastic sealing means which surrounds this second sheet metal ring at least in sections, and that an outer side of the further seal with the locking lug of the first elastic sealing means on the first sheet metal ring axially so cooperating, that a captive component composite of the sealing device is provided.
  • End face of the latch is formed kinked. This ensures that comparatively large areas of latching lug and free end of the second sheet metal ring for axial securing can come into operative contact with each other.
  • To assemble the multi-part sealing device only the radially inner metal ring has to be inserted axially into the receiving opening of the radially outer metal ring and snapped over the at least one locking lug.
  • sealing lips are preferably formed on the sealing device, for example on the radially outer metal ring, that they hold the other sheet metal ring after its latching with a comparatively low force in a desired, sealing and captive position, resulting in only low friction losses occur.
  • a radially aligned latching projection is formed on the first sheet metal ring, which secures the second sheet metal ring axially in the assembled state of the multi-part sealing device in the same.
  • the at least one latching projection is preferably formed in one piece from the material of the first sheet-metal ring and, in the case of a first, radially outer sheet-metal ring, points radially inwards. For example, a portion of an axial wall of the radially outer sheet metal ring may be bent radially inward to axially secure the radially inner sheet metal ring against loss.
  • the second sheet metal ring, a further seal - for example, vulcanized - is present, this at least partially surrounds, and that a radial outer side of the further seal with the latching projection of the first, preferably radially outer sheet metal ring cooperating axially locking.
  • a radially aligned section of the second, preferably radially inner, sheet metal ring is bent at its free end axially inwards, that is to say facing the first sheet-metal ring. is formed.
  • the counter surface for the at least one latching lug or the at least one latching projection is formed by a relevant shaping of the further seal on the second, preferably radially inner sheet-metal ring.
  • a plurality of latching projections are formed equidistantly distributed on the circumference of the first, preferably radially outer sheet metal ring, or that the latching projection is formed annularly on this sheet metal ring.
  • a sealing device according to the invention can be used for a pivot bearing in all fields of technology, but preferably in automotive engineering and in particular for a wheel bearing of a motor vehicle.
  • FIG. 2 shows a further embodiment of the sealing device in a partial cross-sectional representation
  • FIG. 3 shows a modification of the variant according to FIG. 2.
  • the sealing devices 1 shown in a horizontal orientation in FIGS. 1 to 3 consist essentially of a first, radially outer sheet-metal ring 2 and a second, radially inner sheet-metal ring 3, whose partial cross-sectional profiles are in each case essentially L-shaped.
  • the two sheet metal rings 2, 3 can be rotated relative to each other.
  • the first, radially outer sheet metal ring 2 with its sealing element 4 is largely axially inside, so arranged near the bearing ball, while the second, radially inner sheet metal ring 3, the gap between an inner ring and an outer ring the pivot bearing on an end side of the same axially closes.
  • the elastic sealing means 4 consists of a permanently elastic rubber material and is preferably vulcanized on the first sheet-metal ring 2.
  • the sealant 4 is secured to the first sheet metal ring 2 in such a way that a radially inwardly pointing portion 9 of the first sheet metal ring 2 is encompassed by the sealing means 4 like a collar.
  • the sealing means 4 has sealing lips 7, 8 which abut against the axial or radial section of the second sheet-metal ring 3.
  • a lubricant can be introduced into the sealing device 1 in order to further reduce the friction.
  • the elastic sealing means 4 is provided on the first sheet metal ring 2 not only for forming the sealing lips 7 and 8, but extends on the side facing the second sheet metal ring 3 from radially inward to radially outward, in the region of the free axial end of the first sheet metal ring 2 form a radially inwardly facing latching lug 5.
  • This latching lug 5 cooperates with the free end of a radially outwardly pointing section 6 of the second sheet-metal ring 3 in the same axial securing manner.
  • This section 6 is formed in Fig. 1 bent axially outward, so that the end face of this section 6 directly on the triangular in the cross-sectional profile Lug 5 supported and thus can secure against losing.
  • the insertion of the radially inner sheet metal ring 3 is facilitated in the receiving opening of the radially outer sheet metal ring 2 and makes its removal difficult by this geometry of the section 6 and the latching lug 5.
  • a further seal is provided or vulcanized on the second sheet metal ring 3, which surrounds the radially outwardly facing portion 6 of this second sheet metal ring 3.
  • an outer side of the further seal in the region of the free end of the second sheet metal ring 3 with the at least one latching lug 5 of the sealing means 4 on the first sheet metal ring 2 cooperates axially securing together.
  • FIG. 2 shows a further embodiment of a sealing device according to the invention.
  • a radially inwardly facing locking projection 10 is formed at the radially and axially outer end of the first sheet metal ring 2, with the assembled state of the sealing device 1, the second sheet metal ring 3 can be held in its desired position.
  • the elastic sealant 4 is formed in a conventional manner; it therefore surrounds a collar-shaped radially inwardly facing portion 9 of the first, radially outer sheet metal ring 2 and has two sealing lips 7 and 8 to seal the second, radially inner sheet metal ring 3 in its desired position.
  • the additional latching projection 10 on the first sheet-metal ring 2 shown in FIG. 2 can be created, for example, by bending a section of the wall of the first sheet-metal ring 2 radially inwards. For example, five equidistant around the circumference of the sealing device 1 distributed locking projections 10 may be provided.
  • this latching projection 10 it is also possible for this latching projection 10 to be continuous, that is to say annularly formed on the radially outer sheet metal ring 2. As the figures 1 and 2 illustrate, there is no contact between the radially outer end of the portion 6 and the at least one locking projection 10 and the latching lug 5, so that a low-friction rotation of the two metal rings 2, 3 to each other is possible.
  • a further seal 11 is provided on the radially inner second sheet metal ring 3, which surrounds the radially outwardly facing portion 6 of this sheet metal ring 3 axially.
  • An annular shoulder 12 at the radial end of this further seal 11 serves for axially securing engagement with the at least one latching projection 10.
  • the radially outwardly pointing section e of the radially inner sheet metal ring 3 is somewhat bent axially inward in this embodiment, as a result of which this section 6 Run comparatively long and thus the mechanical stability of the radially outer end of the further seal 11 can be increased compared to a shorter and straight design of the second sheet metal ring 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sealing With Elastic Sealing Lips (AREA)

Abstract

L'invention concerne un dispositif d'étanchéité (1) pour palier de rotation, qui comprend deux bagues en tôle (2, 3), mobiles l'une par rapport à l'autre et de section transversale partielle essentiellement en forme de L. Un agent d'étanchéité élastique (4) muni de lèvres d'étanchéité (7, 8) est disposé sur au moins une des bagues en tôle (2, 3). Pour éviter une détérioration ou une dissociation du dispositif d'étanchéité (1) composite, par exemple au cours du transport, du montage sur un palier de rotation et/ou lors du transport ou du fonctionnement du palier rotatif, une liaison par encliquetage est prévue sur la première bague et la deuxième bague en tôle (2, 3), et permet à ces composants de tenir ensemble sans pouvoir se dissocier une fois qu'ils ont été assemblés.
PCT/DE2008/001186 2007-07-25 2008-07-18 Dispositif d'étanchéité pour palier de rotation WO2009012758A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007034812.8 2007-07-25
DE200710034812 DE102007034812A1 (de) 2007-07-25 2007-07-25 Dichteinrichtung für ein Drehlager

Publications (1)

Publication Number Publication Date
WO2009012758A1 true WO2009012758A1 (fr) 2009-01-29

Family

ID=40039838

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2008/001186 WO2009012758A1 (fr) 2007-07-25 2008-07-18 Dispositif d'étanchéité pour palier de rotation

Country Status (2)

Country Link
DE (1) DE102007034812A1 (fr)
WO (1) WO2009012758A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013045700A1 (fr) 2011-09-30 2013-04-04 Albert-Ludwigs-Universität Freiburg Procédé d'agencement spatial de fragments d'échantillons pour les amplifier et les immobiliser en vue de dérivatisations additionnelles

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009016900A1 (de) 2009-04-08 2010-10-14 Schaeffler Technologies Gmbh & Co. Kg Dichteinrichtung
JP5430026B2 (ja) * 2009-07-02 2014-02-26 内山工業株式会社 嵌合部の密封構造

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2533751A1 (de) * 1975-07-29 1977-02-10 Goetzewerke Lippendichtungsring
DE2926207A1 (de) * 1978-07-07 1980-01-17 Iao Industrie Riunite Spa Dichtung fuer eine welle
DE10056175A1 (de) * 1999-11-17 2001-06-13 Ntn Toyo Bearing Co Ltd Wheel Bearing and Sealing Davice Therefor
DE102006048836A1 (de) * 2005-10-17 2007-06-06 Uchiyama Manufacturing Corp. Dichtungseinrichtung

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8428429U1 (de) 1984-09-27 1986-08-14 INA Wälzlager Schaeffler KG, 8522 Herzogenaurach Elastische Dichtung für eine Wälzlager-Drehverbindung
DE3822816A1 (de) 1988-07-06 1990-03-08 Kugelfischer G Schaefer & Co Dichtung, insbesondere fuer waelzlager
DE10336341A1 (de) 2003-08-08 2005-03-10 Ina Schaeffler Kg Abdichtung für ein Wälzlager
DE102005035027A1 (de) 2005-07-27 2007-02-01 Schaeffler Kg Dichtung für ein Drehlager

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2533751A1 (de) * 1975-07-29 1977-02-10 Goetzewerke Lippendichtungsring
DE2926207A1 (de) * 1978-07-07 1980-01-17 Iao Industrie Riunite Spa Dichtung fuer eine welle
DE10056175A1 (de) * 1999-11-17 2001-06-13 Ntn Toyo Bearing Co Ltd Wheel Bearing and Sealing Davice Therefor
DE102006048836A1 (de) * 2005-10-17 2007-06-06 Uchiyama Manufacturing Corp. Dichtungseinrichtung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013045700A1 (fr) 2011-09-30 2013-04-04 Albert-Ludwigs-Universität Freiburg Procédé d'agencement spatial de fragments d'échantillons pour les amplifier et les immobiliser en vue de dérivatisations additionnelles

Also Published As

Publication number Publication date
DE102007034812A1 (de) 2009-01-29

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