DE102012207688B4 - Cassette seal for a pulley - Google Patents
Cassette seal for a pulley Download PDFInfo
- Publication number
- DE102012207688B4 DE102012207688B4 DE102012207688.3A DE102012207688A DE102012207688B4 DE 102012207688 B4 DE102012207688 B4 DE 102012207688B4 DE 102012207688 A DE102012207688 A DE 102012207688A DE 102012207688 B4 DE102012207688 B4 DE 102012207688B4
- Authority
- DE
- Germany
- Prior art keywords
- sealing ring
- drain
- lip
- section
- sealing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- F16J15/324—Arrangements for lubrication or cooling of the sealing itself
-
- 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
- F16C33/784—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race
- F16C33/7843—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race with a single annular sealing disc
- F16C33/7853—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race with a single annular sealing disc with one or more sealing lips to contact the inner race
- F16C33/7856—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race with a single annular sealing disc with one or more sealing lips to contact the inner race with a single sealing lip
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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
- F16C33/784—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race
- F16C33/7859—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race with a further sealing element
- F16C33/7863—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race with a further sealing element mounted to the inner race, e.g. a flinger to use centrifugal effect
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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
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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
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
- F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2361/00—Apparatus or articles in engineering in general
- F16C2361/63—Gears with belts and pulleys
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing With Elastic Sealing Lips (AREA)
Abstract
Kassettendichtung (2) für eine Riemenscheibe (1), umfassend einen Dichtring (7) und eine dem Dichtring (7) axial vorgeschaltete ringförmige Ablaufscheibe (8), wobei der Dichtring (7) und die Ablaufscheibe (8) gemeinsam in einem radialen Spalt (6) zwischen relativ zueinander verdrehbaren Elementen platzierbar sind, indem der Dichtring (7) über einen Anschlussteil (10) mit dem radial außen liegenden Element verbindbar und mit zumindest einer Dichtlippe (11) mit dem radial innen liegenden Element in Kontakt bringbar ist, wohingegen die Ablaufscheibe (8) mit einem hohlzylindrischen Abschnitt (13) auf dem radial innen liegenden Element aufsetzbar ist, und wobei der Dichtring (7) einen an dem hohlzylindrischen Abschnitt (13) anknüpfenden, radial orientierten Abschnitt (15) der Ablaufscheibe (8) hintergreift, indem mindestens ein Abschnitt (18) des Dichtrings (7) axial über ein Ende (19) des radial orientierten Abschnitts (15) der Ablaufscheibe (8) vorsteht und mit zumindest einer daran anschließenden, elastischen Lippe (20) dieses Ende (19) nach radial innen überragt, dadurch gekennzeichnet, dass der Dichtring (7) nach einer Platzierung von Dichtring (7) und Ablaufscheibe (8) in dem radialen Spalt (6) weder über den mindestens einen Abschnitt (18) und dessen zumindest eine Lippe (20) noch über weitere Dichtlippen mit der Ablaufscheibe (8) in Kontakt steht.Cassette seal (2) for a belt pulley (1), comprising a sealing ring (7) and an annular discharge disc (8) axially upstream of the sealing ring (7), the sealing ring (7) and the discharge disc (8) together in a radial gap ( 6) can be placed between elements which can be rotated relative to one another by the sealing ring (7) being connectable to the radially outer element via a connecting part (10) and being able to be brought into contact with the radially inner element with at least one sealing lip (11), whereas the Drain disc (8) with a hollow cylindrical section (13) can be placed on the radially inner element, and wherein the sealing ring (7) engages behind a radially oriented section (15) of the drain disc (8) that connects to the hollow cylindrical section (13), in that at least one section (18) of the sealing ring (7) protrudes axially over one end (19) of the radially oriented section (15) of the drain disk (8) and connects it with at least one Let elastic lip (20) protrudes radially inward from this end (19), characterized in that the sealing ring (7) after the sealing ring (7) and the drain disk (8) have been placed in the radial gap (6) neither over the at least a section (18) and at least one lip (20) of which is in contact with the drain disk (8) via further sealing lips.
Description
Gebiet der ErfindungField of the Invention
Die Erfindung betrifft eine Kassettendichtung für eine Riemenscheibe, umfassend einen Dichtring und eine dem Dichtring axial vorgeschaltete ringförmige Ablaufscheibe, wobei der Dichtring und die Ablaufscheibe gemeinsam in einem radialen Spalt zwischen relativ zueinander verdrehbaren Elementen platzierbar sind, indem der Dichtring über einen Anschlussteil mit dem radial außen liegenden Element verbindbar und mit zumindest einer Dichtlippe mit dem radial innen liegenden Element in Kontakt bringbar ist, wohingegen die Ablaufscheibe mit einem hohlzylindrischen Abschnitt auf dem radial innen liegenden Element aufsetzbar ist, und wobei der Dichtring einen an dem hohlzylindrischen Abschnitt anknüpfenden, radial orientierten Abschnitt der Ablaufscheibe hintergreift, indem mindestens ein Abschnitt des Dichtrings axial über ein Ende des radial orientierten Abschnitts der Ablaufscheibe vorsteht und mit zumindest einer daran anschließenden, elastischen Lippe dieses Ende nach radial innen überragt.The invention relates to a cassette seal for a belt pulley, comprising a sealing ring and an annular discharge disk axially connected upstream of the sealing ring, the sealing ring and the discharge disk being able to be placed together in a radial gap between elements which can be rotated relative to one another, by the sealing ring being connected to the radially outer part via a connecting part lying element is connectable and can be brought into contact with the radially inner element with at least one sealing lip, whereas the drainage disc can be placed with a hollow cylindrical section on the radially inner element, and the sealing ring is a radially oriented section that connects to the hollow cylindrical section Grip disc engages behind, in that at least a section of the sealing ring projects axially beyond one end of the radially oriented section of the discharge disc and projects beyond this end radially inwards with at least one elastic lip adjoining it.
Stand der TechnikState of the art
Aus der
Weitere Dichtungen sind aus
Ausgehend vom vorstehend beschriebenen Stand der Technik ist es nun die Aufgabe der vorliegenden Erfindung, eine Kassettendichtung zur Verfügung zu stellen, welche sich neben einer einfachen Montage in dem jeweiligen radialen Spalt zudem nach erfolgter Montage durch eine geringe Reibung auszeichnet.Starting from the prior art described above, it is the object of the present invention to provide a cassette seal which, in addition to simple assembly in the respective radial gap, is also distinguished by low friction after assembly.
Offenbarung der ErfindungDisclosure of the invention
Diese Aufgabe wird ausgehend vom Oberbegriff des Anspruchs 1 in Verbindung mit dessen kennzeichnenden Merkmalen gelöst. Die hierauf folgenden, abhängigen Ansprüche geben jeweils vorteilhafte Weiterbildungen der Erfindung wieder.This object is achieved on the basis of the preamble of
Die Erfindung umfasst die technische Lehre, dass der Dichtring nach einer Platzierung von Dichtring und Ablaufscheibe in dem radialen Spalt weder über den mindestens einen Abschnitt mit der daran anschließenden Lippe noch über weitere Dichtlippen mit der Ablaufscheibe in Kontakt steht. Mit anderen Worten sind also der Dichtring und die Ablaufscheibe untereinander gänzlich berührungsfrei in dem radialen Spalt platzierbar. Eine derartige Ausgestaltung einer Kassettendichtung hat dabei den Vorteil, dass somit der Dichtring und die Ablaufscheibe als vormontierte Baugruppe problemlos in dem jeweiligen radialen Spalt platziert werden können, gleichzeitig aber nach dieser Platzierung keine Reibung innerhalb der Kassettendichtung auftritt. Denn vor einer Platzierung der Kassettendichtung in dem radialen Spalt wird die Ablaufscheibe mittels des mindestens einen Abschnitts und der daran anschließenden, zumindest einen Lippe verliersicher gehalten, nach Montage im Spalt sind beide Bauteilen jedoch beabstandet zueinander angeordnet, so dass keine Reibung und eine hierdurch hervorgerufene Temperaturerhöhung auftreten kann.The invention encompasses the technical teaching that the sealing ring, after the sealing ring and the drain disk have been placed in the radial gap, is in contact with the drain disk neither via the at least one section with the lip connected thereto nor via further sealing lips. In other words, the sealing ring and the drain disk can be placed in the radial gap completely without contact with one another. Such a design of a cassette seal has the advantage that the sealing ring and the run-off disk can be placed in the respective radial gap as a preassembled assembly, but at the same time there is no friction within the cassette seal after this placement. Because before placing the cassette seal in the radial gap, the drain disk is held captively by means of the at least one section and the adjoining at least one lip, but after assembly in the gap, both components are spaced apart from one another, so that there is no friction and a temperature increase caused thereby can occur.
Entsprechend einer vorteilhaften Ausführungsform der Erfindung sind der mindestens eine Abschnitt und/oder die zumindest eine Lippe umlaufend ausgestaltet. Hierdurch kann eine zuverlässige axiale und radiale Aufnahme der Ablaufscheibe am Dichtring vor Montage der erfindungsgemäßen Kassettendichtung dargestellt werden. Alternativ dazu können aber auch mehrere, über den Umfang verteilte Abschnitte mit daran jeweils anschließenden Lippen oder auch einzelne, über den Umfang verteilte und an einem umlaufenden Abschnitt ausgestaltete Lippen vorgesehen sein, so dass die Ablaufscheibe über einzelne Haltenasen am Dichtring verliersicher gehalten ist.According to an advantageous embodiment of the invention, the at least one section and / or the at least one lip are configured to run all the way round. In this way, a reliable axial and radial reception of the drain disk on the sealing ring can be represented before assembly of the cassette seal according to the invention. Alternatively, however, a plurality of sections distributed over the circumference with adjoining lips or individual sections distributed over the circumference can also be used and lips designed on a circumferential section can be provided, so that the drain disk is held captively on the sealing ring by means of individual retaining lugs.
In Weiterbildung der Erfindung ist axial zwischen Dichtring und Ablaufscheibe ein Schmiermittel eingebracht. Hierüber wird die Gefahr eines Eintrags von Verunreinigungen vermindert. Das Schmiermittel kann hierbei insbesondere als Schmierfettring vorliegen, welcher auf der, dem Dichtring zugewandten Innenseite des radial orientierten Abschnitts der Ablaufscheibe aufgebracht ist.In a development of the invention, a lubricant is introduced axially between the sealing ring and the drain disk. This reduces the risk of contamination. The lubricant can in particular be present as a grease ring, which is applied to the inside of the radially oriented section of the drainage disk facing the sealing ring.
Gemäß einer weiteren Ausgestaltung der Erfindung verfügt der Dichtring über eine axiale Dichtlippe, welche sich in Richtung der Ablaufscheibe erstreckt. Hierüber kann eine Dichtwirkung der Kassettendichtung verbessert werden.According to a further embodiment of the invention, the sealing ring has an axial sealing lip which extends in the direction of the drain disk. This can improve the sealing effect of the cassette seal.
Die Erfindung ist nicht auf die angegebene Kombination der Merkmale des Hauptanspruchs oder der abhängigen Ansprüche beschränkt. Es ergeben sich darüber hinaus Möglichkeiten, einzelne Merkmale, auch soweit sie aus den Ansprüchen, der nachfolgenden Beschreibung einer Ausführungsform oder unmittelbar aus der Zeichnung hervorgehen, miteinander zu kombinieren. Die Bezugnahme der Ansprüche auf die Zeichnung durch Verwendung von Bezugszeichen soll den Schutzumfang der Ansprüche nicht beschränken.The invention is not limited to the specified combination of the features of the main claim or the dependent claims. There are also possibilities to combine individual features, also insofar as they emerge from the claims, the following description of an embodiment or directly from the drawing. The reference of the claims to the drawing by using reference numerals is not intended to limit the scope of the claims.
Eine bevorzugte Ausführungsform der Erfindung wird nachfolgend anhand der beiliegenden Zeichnung näher erläutert.A preferred embodiment of the invention is explained below with reference to the accompanying drawings.
Ausführliche Beschreibung der ZeichnungDetailed description of the drawing
Die einzige Figur zeigt eine Schnittansicht eines Details einer Riemenscheibe
Wie in der einzigen Figur zu erkennen ist, setzt sich die erfindungsgemäße Kassettendichtung aus einem Dichtring
Die Ablaufscheibe
Um vor der Befestigung des Dichtringes
Mittels der erfindungsgemäßen Ausgestaltung einer Kassettendichtung
BezugszeichenlisteReference symbol list
- 11
- RiemenscheibePulley
- 22nd
- KassettendichtungCassette seal
- 33rd
- LaufrolleRoller
- 44th
- BauteilComponent
- 55
- WälzlagerungRolling bearing
- 66
- Spaltgap
- 77
- DichtringSealing ring
- 88th
- AblaufscheibeDrain disc
- 99
- MetallringMetal ring
- 1010th
- AnschlussteilConnector
- 1111
- erste Dichtlippefirst sealing lip
- 1212
- zweite Dichtlippesecond sealing lip
- 1313
- hohlzylindrischer Abschnitthollow cylindrical section
- 1414
- Außendurchmesserouter diameter
- 1515
- Abschnittsection
- 1616
- Raumroom
- 1717th
- Schmiermittellubricant
- 1818th
- Abschnittsection
- 1919th
- EndeThe End
- 2020th
- Lippelip
Claims (4)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102012207688.3A DE102012207688B4 (en) | 2012-05-09 | 2012-05-09 | Cassette seal for a pulley |
CN201310168415.5A CN103388681B (en) | 2012-05-09 | 2013-05-09 | Cartridge sealing system for a pulley |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102012207688.3A DE102012207688B4 (en) | 2012-05-09 | 2012-05-09 | Cassette seal for a pulley |
Publications (2)
Publication Number | Publication Date |
---|---|
DE102012207688A1 DE102012207688A1 (en) | 2013-11-14 |
DE102012207688B4 true DE102012207688B4 (en) | 2020-06-18 |
Family
ID=49475471
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102012207688.3A Active DE102012207688B4 (en) | 2012-05-09 | 2012-05-09 | Cassette seal for a pulley |
Country Status (2)
Country | Link |
---|---|
CN (1) | CN103388681B (en) |
DE (1) | DE102012207688B4 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102017129123B4 (en) | 2017-12-07 | 2019-10-17 | Schaeffler Technologies AG & Co. KG | Sealed rolling bearing and method for operating a rolling bearing |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DD278387A1 (en) | 1988-12-22 | 1990-05-02 | Waelzlager Normteile Veb | TWO-PIECE STORAGE SEALING, PREFERABLY FOR RIBBED BEARING |
DE19853187A1 (en) | 1998-11-18 | 2000-06-15 | Fag Automobiltechnik Ag | Cassette seal for roller bearing has two coaxial L-shaped metal rings which are held by elastic lips |
DE10358876A1 (en) | 2003-12-16 | 2005-07-28 | Fag Kugelfischer Ag | Gasket with contactless abutment rings |
DE102009050215A1 (en) | 2009-10-22 | 2011-05-12 | Schaeffler Technologies Gmbh & Co. Kg | Non-abrasive sealing ring and seal assembly |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT8553531V0 (en) * | 1985-06-21 | 1985-06-21 | Riv Officine Di Villar Perosa | SEALING COMPLEX PARTICULARLY FOR BEARINGS |
JP2001065704A (en) * | 1999-08-31 | 2001-03-16 | Ntn Corp | Sealing device |
DE112008002994T5 (en) * | 2007-11-09 | 2010-12-09 | NTN Corporation, Osaka-shi | Sealing device for bearing assembly and Radstützlageranordnung with this |
US8342535B2 (en) * | 2007-11-20 | 2013-01-01 | The Timken Company | Non-contact labyrinth seal assembly and method of construction thereof |
CN201705937U (en) * | 2010-05-11 | 2011-01-12 | 青岛开世密封工业有限公司 | Combined type sealing ring with antifriction distance ring |
-
2012
- 2012-05-09 DE DE102012207688.3A patent/DE102012207688B4/en active Active
-
2013
- 2013-05-09 CN CN201310168415.5A patent/CN103388681B/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DD278387A1 (en) | 1988-12-22 | 1990-05-02 | Waelzlager Normteile Veb | TWO-PIECE STORAGE SEALING, PREFERABLY FOR RIBBED BEARING |
DE19853187A1 (en) | 1998-11-18 | 2000-06-15 | Fag Automobiltechnik Ag | Cassette seal for roller bearing has two coaxial L-shaped metal rings which are held by elastic lips |
DE10358876A1 (en) | 2003-12-16 | 2005-07-28 | Fag Kugelfischer Ag | Gasket with contactless abutment rings |
DE102009050215A1 (en) | 2009-10-22 | 2011-05-12 | Schaeffler Technologies Gmbh & Co. Kg | Non-abrasive sealing ring and seal assembly |
Also Published As
Publication number | Publication date |
---|---|
DE102012207688A1 (en) | 2013-11-14 |
CN103388681A (en) | 2013-11-13 |
CN103388681B (en) | 2017-12-22 |
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