WO2009012758A1 - Sealing device for a rotary bearing - Google Patents
Sealing device for a rotary bearing Download PDFInfo
- 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
- 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.)
- Ceased
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Classifications
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- 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
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- 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
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- 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.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing With Elastic Sealing Lips (AREA)
Abstract
Description
Dichteinrichtung für ein Drehlager Sealing device for a pivot bearing
Beschreibungdescription
Gebiet der ErfindungField of the invention
Die Erfindung betrifft eine Dichteinrichtung für ein Drehlager, mit zwei im Teilquerschnitt im Wesentlichen L-förmigen, relativ zueinander bewegbaren Blechringen, wobei zumindest an einem Blechring eine Dichtung mit Dichtlippen angeordnet ist.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.
Hintergrund der ErfindungBackground of the invention
Drehlager, wie beispielsweise Wälzlager, werden in verschiedenen Ausführungsformen in praktisch allen Gebieten der Technik eingesetzt, um ein sich drehendes Bauteil an einem feststehenden anderen Bauteil zu lagern. Insbesondere in der Kraftfahrzeugtechnik finden Wälzlager in großem Umfang Verwendung. Ein Wälzlager besteht bekanntermaßen beispielsweise aus zwei oder mehr Laufringen, zwischen denen ein Wälzkörper tragender Wälzkörperkäfig angeordnet ist. Zusätzlich kann in dem Wälzlager ein Schmier- mittel wie ein Öl oder ein Fett eingebracht sein, um die Reibung der einzelnen Bauteile untereinander weiter zu reduzieren.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. In particular, in automotive technology find rolling bearings use on a large scale. A roller bearing is known, for example, two or more races, between which a rolling element bearing Wälzkörperkäfig is arranged. In addition, in the rolling bearing a lubricating be introduced as an oil or a fat, in order to further reduce the friction of the individual components with each other.
Um ein Austreten dieses Schmiermittels sowie das Eindringen von Ver- schmutzungen in das Wälzlager zu vermeiden, ist es bekannt, das Wälzlager mit einer Dichteinrichtung auszurüsten. Eine derartige elastische und ringförmig ausgebildete Dichtung ist beispielsweise aus der DE 84 28 429 U1 bekannt, die in einer Ringnut eines inneren Laufringes eingesetzt ist. Eine erste Dichtlippe der elastomeren Dichtung liegt gleitend an der zugeordneten Stirnseite des äußeren Laufringes an. Zudem verfügt die elastomere Dichtung über einen axial ausgerichteten Kragen, der in einen Spalt zwischen dem äußerem und dem innerem Laufring des Wälzlagers hineinragt. An dem Kragen ist eine weitere, aus dem Spalt heraus gerichtete Dichtlippe ausgebildet, die an der Innenmantelfläche des äußeren Laufringes anliegt, so dass der Spalt zuverlässig verschlossen ist.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. 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. In addition, 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.
Aus der DE 103 36 341 A1 ist eine Dichteinrichtung für ein Wälzlager mit einer armierten Dichtscheibe bekannt, die an einem äußeren Lagerring befestigt ist und mit ihrem radial inneren Ende in einen Freistich eines inneren Lagerrings eingreift sowie sich mittels einer Dichtkante an einer Wandung des Freistichs abstützt. Dabei ist eine Dichtlippe der Dichteinrichtung derart ausgebildet, dass bei einer Rotation der Dichtscheibe eine fliehkraftgeregelte Vorspannung der Dichtlippe erhalten wird.From DE 103 36 341 A1 discloses 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 , In this case, 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.
Weiterhin ist aus der DE 10 2005 035 027 A 1 eine Dichteinrichtung für ein Drehlager bekannt, bei der an einem ringförmigen Träger ein elastomerer Körper angeordnet ist. Diese beiden Bauteile bestehen aus unterschiedlichen nicht metallischen Werkstoffen. Beispielsweise können der Träger und der elastomerer Körper in einem gemeinsamen Arbeitsgang als Spritzguss- teil hergestellt sein. Diese Druckschrift offenbart auch, dass die Dichteinrichtung als Kassettendichtung ausgebildet ist, bei welcher der Träger und der elastomerer Körper mit einem so genannten Winkelring ein Dichtungsmodul bilden. Dabei liegen zwei Dichtlippen des elastomerer Körpers axial bzw. radial an der zu den Wälzkörpern des Lagers gerichteten Seite des Winkelringes dichten an. Der Winkelring wird bei der Montage der Kassettendichtung in eine durch den elastomeren Körper gebildete zentrale Öffnung ein- geschoben und dort durch die Vorspannung der Dichtlippen gehalten.Furthermore, 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. For example, the carrier and the elastomeric body can be manufactured in a single operation as an injection molded part. This document also discloses that 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. In this case, 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.
Schließlich offenbart die DE 38 22 816 A1 eine Dichteinrichtung für ein Wälzlager mit zwei im Teilquerschnitt jeweils im Wesentlichen L-förmigen Blechteilen, wobei zumindest an einem der beiden Blechteile eine elastische Dichtung mit Dichtlippen angeordnet ist, um eine gegenseitige Abdichtung dieser Blechteile sowie einen Zusammenhalt für den Transport und für die Montage am Lager zu erzielen. Zur Fixierung eines radial inneren Blechrings an einer Welle ist an einem axial inneren Ende eines axialen Schenkels dieses Blechrings ein radial nach innen überstehender Vorsprung angeformt, der in eine Nut an der Welle eingreifen kann.Finally, 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. For fixing a radially inner sheet metal ring to a shaft, 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.
Als nachteilig bei solchen mehrteiligen Dichteinrichtungen für Drehlager hat sich herausgestellt, dass beispielsweise beim Transport vom Hersteller zum Endabnehmer einer solchen Dichteinrichtung durch unsachgemäße Hand- habung eine Dichtlippe von dem zugeordneten Blechring abspringen und dann nicht mehr montiert werden kann. Auch nach einem Einbau der mehrteiligen Dichteinrichtung in ein Wälzlager kann es aufgrund von tolleranzbe- dingten Innenringbewegungen passieren, dass sich der Winkelring von den übrigen Bestandteilen der Dichteinrichtung trennt oder zumindest ein optimal dichtender Kontakt zwischen der zumindest einen Dichtlippe des Dichtmittels und dem Winkelring verloren geht.A disadvantage of such multi-part sealing devices for pivot bearing has been found that, for example, during transport from the manufacturer to the end user of such a sealing device due to improper handling a sealing lip jump off the associated metal ring and then can not be mounted. Even after installation of the multi-part sealing device into a rolling bearing, it may happen that the angular ring separates from the other components of the sealing device or at least optimal sealing contact between the at least one sealing lip of the sealing means and the angle ring is lost due to tolleranzbedingten inner ring movements.
Aufgabe der ErfindungObject of the invention
Der Erfindung liegt daher die Aufgabe zugrunde, eine mehrteilige Dichteinrichtung für ein Drehlager zu schaffen, die während ihres Transports, ihrer Montage an einem Drehlager und bei einer Handhabung des mit der Dichteinrichtung ausgerüsteten Drehlagers zuverlässig mechanisch intakt bleibt. Die Dichteinrichtung soll zudem bevorzugt so ausgebildet sein, dass die zumindest eine Dichtlippe des Dichtmittels stets dichtend an dem Winkelring anliegt.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.
Zusammenfassung der ErfindungSummary of the invention
Der Erfindung liegt die Erkenntnis zugrunde, dass die gestellte Aufgabe gelöst werden kann, wenn die mehrteilige Dichtungseinrichtung abweichend von bekannten technischen Lösungen über zusätzliche Mittel verfügt, mit denen ein Auseinanderfallen derselben bei einer ungewollten Krafteinwirkung sicher unterbunden wird. Hierzu ist gemäß der Erfindung eine Rastver- bindung vorgesehen, welche die Bauteile der Dichtungseinrichtung nach deren Zusammenbau in Formschluss sicher zusammen hält.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. For this purpose, 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.
Demnach geht die Erfindung gemäß den Merkmalen des Anspruchs 1 aus von einer Dichteinrichtung für ein Drehlager, bevorzugt für ein Wälzlager, mit zwei im Teilquerschnitt im Wesentlichen L-förmigen und relativ zueinander bewegbaren Blechringen, wobei zumindest an einem Blechring ein elastisches Dichtmittel mit Dichtlippen angeordnet ist. Zur Gewährleistung der gewünschten mechanischen Integrität und Dichtwirkung der Dichteinrichtung beim Transport, bei deren Verbau in einem Lager sowie bei dessen Handhabung und Betrieb ist zudem vorgesehen, dass eine Rastverbindung an den beiden Blechringen vorhanden ist, welche die beiden Blechringe axial zueinander sichert.Accordingly, 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.
Ein Vorteil der Dichteinrichtung gemäß der Erfindung besteht darin, dass mittels deren Rastverbindung eine Abdichtung des Wälzlagers zuverlässig gewährleistet werden kann, da die einzelnen Bauteile, insbesondere ein radial äußerer und ein radial innerer Blechring sowie ein dazwischen angeord- netes elastisches Dichtmittel in ihren axialen Positionen relativ zueinander gehalten werden. Dadurch wird unter anderem vermieden, dass eine Dichtlippe des vorzugsweise elastomeren Dichtmittels von einem zugeordneten Bauteil der Dichtungseinrichtung abspringt und somit das Wälzlager bezie- hungsweise die Dichteinrichtung unbrauchbar wird.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.
Gemäß einer ersten Weiterbildung der erfindungsgemäßen Dichtungseinrichtung ist vorgesehen, dass das elastische Dichtmittel den ersten Blechring zumindest abschnittsweise umgreift, und dass an dem Dichtmit- tel zumindest eine Rastnase ausgebildet ist, die im zusammengesetzten Zustand den zweiten Blechring axial innerhalb des ersten Blechrings hält. Hierzu wirkt die zumindest eine Rastnase mit einem Abschnitt der Oberfläche des zweiten, vorzugsweise radial inneren Blechrings zusammen.According to a first development of the sealing device according to the invention, it is provided that 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. For this purpose, the at least one latching nose cooperates with a portion of the surface of the second, preferably radially inner, sheet metal ring.
Bevorzugt handelt es sich bei dem ersten Blechring um einen radial äußeren Blechring, an dem das elastische Dichtmittel befestigt ist, und bei dem zweiten Blechring um einen radial inneren Blechring, der von Fachleuten auch als Winkelring bezeichnet wird.The first sheet metal ring is preferably a radially outer sheet metal ring to which the elastic sealing means is fastened, and the second sheet metal ring is a radially inner sheet metal ring which is also referred to by experts as an angle ring.
Gemäß einer Variante der Erfindung kann vorgesehen sein, dass am zweiten, vorzugsweise radial inneren Blechring eine weitere Dichtung vorhanden ist, beispielsweise aus dem gleichen Material wie das erste elastische Dichtmittel, die diesen zweiten Blechring zumindest abschnittsweise umgreift, und dass eine Außenseite der weiteren Dichtung mit der Rastnase des ersten elastischen Dichtmittels am ersten Blechring axial sichernd so zusammenwirkt, dass ein verliersicherer Bauteilverbund der Dichteinrichtung geschaffen ist.According to a variant of the invention can be provided that 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.
Nach einer anderen Ausgestaltung kann vorgesehen sein, dass ein radial ausgerichteter Abschnitt des zweiten, vorzugsweise radial inneren Blechrings an seinem freien Ende in Richtung hin zu einer axial nach innen weisendenAccording to another embodiment, it may be provided that a radially aligned portion of the second, preferably radially inner sheet metal ring at its free end in the direction towards an axially inwardly facing
Stirnseite der Rastnase abgeknickt ausgebildet ist. Dadurch ist sichergestellt, dass vergleichsweise große Flächen von Rastnase und freiem Ende des zweiten Blechrings zur Axialsicherung miteinander in Wirkkontakt treten können. Zum Zusammensetzen der mehrteiligen Dichteinrichtung muss lediglich der radial innere Blechring axial in die Aufnahmeöffnung des radial äußeren Blechrings eingeführt und über die zumindest eine Rastnase eingeschnappt zu werden.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.
Außerdem ist vorgesehen, dass an der Dichteinrichtung, beispielsweise an dem radial äußeren Blechring, die Dichtlippen bevorzugt so ausgebildet sind, dass diese den anderen Blechring nach seiner Verrastung mit einer vergleichsweise geringen Kraft in einer gewünschten, abdichtenden und verliersicheren Position halten, wodurch nur geringe Reibungsverluste auftreten.It is also provided that the 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.
Gemäß einer anderen Variante ist vorgesehen, dass am ersten Blechring ein radial ausgerichteter Rastvorsprung ausgebildet ist, der im zusammengesetzten Zustand der mehrteiligen Dichteinrichtung den zweiten Blechring axial in derselben sichert. Der zumindest eine Rastvorsprung ist vorzugsweise einstückig aus dem Material des ersten Blechrings herausgeformt und weist bei einem ersten, radial äußeren Blechring nach radial innen. So kann beispielsweise ein Abschnitt einer axialen Wandung des radial äußeren Blechrings nach radial innen umgebogen sein, um den radial inneren Blechring axial gegen ein Verlieren zu sichern.According to another variant, it is provided that 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.
Gemäß einer weiteren Variante kann vorgesehen sein, dass am zweiten Blechring eine weitere Dichtung - beispielsweise anvulkanisiert - vorhanden ist, die diesen zumindest abschnittsweise umgreift, und dass eine radiale Außenseite der weiteren Dichtung mit dem Rastvorsprung des ersten, vorzugsweise radial äußeren Blechrings axial sichernd zusammenwirkt.According to a further variant it can be provided that 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.
Außerdem wird es als vorteilhaft erachtet, wenn ein radial ausgerichteter Abschnitt des zweiten, vorzugsweise radial inneren Blechrings an seinem freien Ende axial nach innen abgeknickt, also zum ersten Blechring weisend aus- gebildet ist. In diesem Fall ist die Gegenfläche für die zumindest eine Rastnase oder den zumindest einen Rastvorsprung durch eine diesbezügliche Formgebung der weiteren Dichtung an dem zweiten, vorzugsweise radial inneren Blechring ausgebildet.Moreover, it is considered to be advantageous if 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. In this case, 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.
Zudem kann vorgesehen sein, dass mehrere Rastvorsprünge äquidistant am Umfang des ersten, vorzugsweise radial äußeren Blechrings verteilt ausgebildet sind, oder dass der Rastvorsprung ringförmig an diesem Blechring ausgebildet ist.In addition, it can be provided that 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.
Eine erfindungsgemäße Dichteinrichtung kann für ein Drehlager in allen Gebieten der Technik eingesetzt werden, bevorzugt jedoch in der Kraftfahrzeugtechnik und hier insbesondere für ein Radlager eines Kraftfahrzeuges.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.
Kurze Beschreibung der ZeichnungenBrief description of the drawings
Die Erfindung wird im Folgenden anhand der beiliegenden Zeichnung an Ausführungsbeispielen näher erläutert. Darin zeigt:The invention will be explained in more detail below with reference to the accompanying drawings of exemplary embodiments. It shows:
Fig. 1 eine Dichteinrichtung für ein Drehlager in einer teilweisen Querschnittsdarstellung,1 shows a sealing device for a pivot bearing in a partial cross-sectional view,
Fig. 2 eine weitere Ausführungsform der Dichteinrichtung in einer teil- weisen Querschnittsdarstellung, und2 shows a further embodiment of the sealing device in a partial cross-sectional representation, and
Fig. 3 eine Abwandlung der Variante gemäß Fig. 2. Detaillierte Beschreibung der Zeichnungen3 shows a modification of the variant according to FIG. 2. Detailed description of the drawings
Die in den Figuren 1 bis 3 in liegender Ausrichtung dargestellten Dichteinrichtungen 1 bestehen im Wesentlichen aus einem ersten, radial äußeren Blechring 2 und einem zweiten, radial inneren Blechring 3, deren Teilquerschnittprofile jeweils im Wesentlichen L-förmig ausgebildet sind. Die beiden Blechringe 2, 3 können relativ zueinander verdreht werden. Bei einer Anordnung an einem Drehlager, wie etwa einem Kugellager, ist der erste, radial äußere Blechring 2 mit seinem Dichtelement 4 weitgehend axial innen, also nahe den Lagerkugel angeordnet, während der zweite, radial innere Blechring 3 den Spalt zwischen einem Innenring und einem Außenring des Drehlagers auf einer Stirnseite desselben axial abschließt.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. In an arrangement on a rotary bearing, such as a ball bearing, 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.
Das elastische Dichtmittel 4 besteht aus einem dauerelastischen Kau- tschukmaterial und ist an dem ersten Blechring 2 vorzugsweise anvulkanisiert. Das Dichtmittel 4 ist dabei derart am ersten Blechring 2 befestigt, dass ein radial nach innen weisender Abschnitt 9 des ersten Blechrings 2 kragenartig von dem Dichtmittel 4 umgriffen ist. Um ein diesbezügliches Drehlager abzudichten weist das Dichtmittel 4 Dichtlippen 7, 8 auf, die am axialen bzw. am radialen Abschnitt des zweiten Blechrings 3 anliegen. Zusätzlich kann in die Dichteinrichtung 1 ein Schmiermittel eingebracht werden, um die Reibung weiter zu verringern.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. In order to seal a relevant rotary bearing, the sealing means 4 has sealing lips 7, 8 which abut against the axial or radial section of the second sheet-metal ring 3. In addition, a lubricant can be introduced into the sealing device 1 in order to further reduce the friction.
Das elastische Dichtmittel 4 ist am ersten Blechring 2 nicht nur zur Ausbil- düng der Dichtlippen 7 und 8 vorhanden, sondern erstreckt sich an der dem zweiten Blechring 3 zugewandten Seite von radial innen nach radial außen, um im Bereich des freien axialen Endes des ersten Blechsrings 2 eine radial nach innen weisende Rastnase 5 auszubilden. Diese Rastnase 5 wirkt mit dem freien Ende eines radial nach außen weisenden Abschnitts 6 des zwei- ten Blechrings 3 denselben axial sichernd zusammen. Dieser Abschnitt 6 ist in Fig. 1 nach axial außen abgeknickt ausgebildet, so dass sich die Stirnfläche dieses Abschnitts 6 unmittelbar an der im Querschnittsprofil dreieckigen Rastnase 5 abstützen und damit gegen ein Verlieren sichern kann. Außerdem wird durch diese Geometrie des Abschnitts 6 sowie der Rastnase 5 das Einsetzen des radial inneren Blechrings 3 in die Aufnahmeöffnung des radial äußeren Blechring 2 erleichtert sowie dessen Entfernen erschwert.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. In addition, 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.
Gemäß einer nicht gesondert dargestellten Variante der in Fig. 1 gezeigten Ausführungsform ist an dem zweiten Blechring 3 eine weitere Dichtung vorgesehen bzw. anvulkanisiert, die den radial nach außen weisenden Abschnitt 6 dieses zweiten Blechrings 3 umgreift. Dabei wirkt eine Außenseite der weiteren Dichtung im Bereich des freien Endes des zweiten Blechrings 3 mit der zumindest einen Rastnase 5 des Dichtmittels 4 am ersten Blechring 2 axial sichernd zusammen.According to a variant not shown separately of the embodiment shown in Fig. 1, 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. In this case, 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.
In Fig. 2 ist eine weitere Ausführungsform einer Dichteinrichtung gemäß der Erfindung dargestellt. Dabei ist am radial und axial äußeren Ende des ersten Blechrings 2 ein radial nach innen weisender Rastvorsprung 10 ausgebildet, mit dem im zusammengesetzten Zustand der Dichteinrichtung 1 der zweite Blechring 3 in seiner gewünschten Position festgehalten werden kann. Bei dieser Ausführungsform ist das elastische Dichtmittel 4 in konventioneller Weise ausgebildet; es umgreift demnach kragenförmig einen radial nach innen weisenden Abschnitt 9 des ersten, radial äußeren Blechrings 2 und verfügt über zwei Dichtlippen 7 und 8, um den zweiten, radial inneren Blechring 3 in seiner gewünschten Position abdichten festzulegen.FIG. 2 shows a further embodiment of a sealing device according to the invention. Here, 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. In this embodiment, 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.
Der in Fig. 2 gezeigte zusätzliche Rastvorsprung 10 am ersten Blechring 2 kann beispielsweise dadurch geschaffen werden, dass ein Abschnitt der Wandung des ersten Blechrings 2 radial nach innen umgebogen wird. Beispielsweise können fünf äquidistant um den Umfang der Dichteinrichtung 1 verteilt angeordnete Rastvorsprünge 10 vorgesehen sein. Prinzipiell ist es auch möglich, dass dieser Rastvorsprung 10 durchgehend, also ringförmig an dem radial äußeren Blechring 2 ausgebildet ist. Wie die Figuren 1 und 2 verdeutlichen, besteht bei störungslosem Betrieb kein Kontakt zwischen dem radial äußeren Ende des Abschnitts 6 und dem zumindest einen Rastvorsprung 10 bzw. der Rastnase 5, so dass ein reibungsarmes Verdrehen der beiden Blechringe 2, 3 zueinander möglich ist.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. In principle, 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.
Gemäß der Variante in Fig. 3 ist eine weitere Dichtung 11 an dem radial inneren, zweiten Blechring 3 vorgesehen, die den radial nach außen weisenden Abschnitt 6 dieses Blechrings 3 axial umgreift. Ein ringförmiger Absatz 12 am radialen Ende dieser weiteren Dichtung 11 dient zur axial sichernden Anlage an den zumindest einen Rastvorsprung 10. Vorzugsweise ist der radial nach außen weisende Abschnitt e des radial inneren Blechrings 3 in dieser Ausführungsform etwas nach axial innen umgebogen, wodurch dieser Abschnitt 6 vergleichsweise lang ausgeführt und damit die mechanische Stabilität des radial äußeren Endes der weiteren Dichtung 11 gegenüber einer kürzeren und geraden Ausführung des zweiten Blechrings 3 erhöht werden kann. According to the variant in Fig. 3, 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. Preferably, 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.
BezugszeichenlisteLIST OF REFERENCE NUMBERS
1 Dichtung1 seal
2 Erster, innerer Blechring 3 Zweiter, äußerer Blechring2 First, inner metal ring 3 Second, outer metal ring
4 Elastisches Dichtmittel4 Elastic sealant
5 Rastnase5 latch
6 Radial nach außen weisender Abschnitt des inneren Lauf rings6 Radially outwardly facing portion of the inner race rings
7 Dichtlippe 8 Dichtlippe7 sealing lip 8 sealing lip
9 Radial nach innen weisender Abschnitt des äußeren Laufrings9 Radially inwardly facing portion of the outer race
10 Rastvorsprung10 locking projection
11 Weitere Dichtung11 Further seal
12 Ringförmiger Absatz in der weiteren Dichtung 11 12 annular shoulder in the further seal 11th
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200710034812 DE102007034812A1 (en) | 2007-07-25 | 2007-07-25 | Sealing device for a pivot bearing |
| DE102007034812.8 | 2007-07-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2009012758A1 true WO2009012758A1 (en) | 2009-01-29 |
Family
ID=40039838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/DE2008/001186 Ceased WO2009012758A1 (en) | 2007-07-25 | 2008-07-18 | Sealing device for a rotary bearing |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE102007034812A1 (en) |
| WO (1) | WO2009012758A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013045700A1 (en) | 2011-09-30 | 2013-04-04 | Albert-Ludwigs-Universität Freiburg | Method for the spatial arrangement of sample fragments for amplification and immobilization for further derivatizations |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009016900A1 (en) | 2009-04-08 | 2010-10-14 | Schaeffler Technologies Gmbh & Co. Kg | sealing device |
| EP2450600A4 (en) * | 2009-07-02 | 2014-09-17 | Uchiyama Mfg | Sealing structure for fitting section |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2533751A1 (en) * | 1975-07-29 | 1977-02-10 | Goetzewerke | Lip seal for rotating shaft - has rubbing ring supported by rubber moulding which retains lip moulding |
| DE2926207A1 (en) * | 1978-07-07 | 1980-01-17 | Iao Industrie Riunite Spa | GASKET FOR A SHAFT |
| DE10056175A1 (en) * | 1999-11-17 | 2001-06-13 | Ntn Toyo Bearing Co Ltd | Wheel bearing for automobiles and other motor vehicles comprises a sealing unit which is provided with a peripheral array of alternating magnetic poles |
| DE102006048836A1 (en) * | 2005-10-17 | 2007-06-06 | Uchiyama Manufacturing Corp. | seal means |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE8428429U1 (en) | 1984-09-27 | 1986-08-14 | INA Wälzlager Schaeffler KG, 8522 Herzogenaurach | Elastic seal for a roller bearing slewing ring |
| DE3822816A1 (en) | 1988-07-06 | 1990-03-08 | Kugelfischer G Schaefer & Co | Seal, especially for rolling contact bearings |
| DE10336341A1 (en) | 2003-08-08 | 2005-03-10 | Ina Schaeffler Kg | Sealing for a rolling bearing |
| DE102005035027A1 (en) | 2005-07-27 | 2007-02-01 | Schaeffler Kg | Seal for pivot bearing has annular support and elastomer component manufactured from two different non-metallic materials, wherein support and elastomer component can be produced as injection molded part |
-
2007
- 2007-07-25 DE DE200710034812 patent/DE102007034812A1/en not_active Withdrawn
-
2008
- 2008-07-18 WO PCT/DE2008/001186 patent/WO2009012758A1/en not_active Ceased
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2533751A1 (en) * | 1975-07-29 | 1977-02-10 | Goetzewerke | Lip seal for rotating shaft - has rubbing ring supported by rubber moulding which retains lip moulding |
| DE2926207A1 (en) * | 1978-07-07 | 1980-01-17 | Iao Industrie Riunite Spa | GASKET FOR A SHAFT |
| DE10056175A1 (en) * | 1999-11-17 | 2001-06-13 | Ntn Toyo Bearing Co Ltd | Wheel bearing for automobiles and other motor vehicles comprises a sealing unit which is provided with a peripheral array of alternating magnetic poles |
| DE102006048836A1 (en) * | 2005-10-17 | 2007-06-06 | Uchiyama Manufacturing Corp. | seal means |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013045700A1 (en) | 2011-09-30 | 2013-04-04 | Albert-Ludwigs-Universität Freiburg | Method for the spatial arrangement of sample fragments for amplification and immobilization for further derivatizations |
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| Publication number | Publication date |
|---|---|
| DE102007034812A1 (en) | 2009-01-29 |
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