DE4213996A1 - Shaft sealing ring with dust protector - has spring support ring fitting on end face of dust protection ring which is fixed in groove under axial pressure. - Google Patents
Shaft sealing ring with dust protector - has spring support ring fitting on end face of dust protection ring which is fixed in groove under axial pressure.Info
- Publication number
- DE4213996A1 DE4213996A1 DE4213996A DE4213996A DE4213996A1 DE 4213996 A1 DE4213996 A1 DE 4213996A1 DE 4213996 A DE4213996 A DE 4213996A DE 4213996 A DE4213996 A DE 4213996A DE 4213996 A1 DE4213996 A1 DE 4213996A1
- Authority
- DE
- Germany
- Prior art keywords
- ring
- dust
- shaft sealing
- sealing ring
- groove
- 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
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
- F16J15/3284—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings characterised by their structure; Selection of materials
-
- 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
- F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
- F16J15/3232—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip having two or more lips
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing With Elastic Sealing Lips (AREA)
- Sealing Devices (AREA)
Abstract
Description
Die Erfindung betrifft einen Wellendichtring mit einer dem abzudichtenden Medium zugekehrten elastomeren Dichtlippe und einem auf der dem Medium abgewandten Seite angeordneten Staubschutzring, welcher mittels eines Stützringes in einer umlaufenden Nut des Wellendichtringes festgelegt ist.The invention relates to a shaft seal with a elastomer facing the medium to be sealed Sealing lip and one on the side facing away from the medium Side arranged dust protection ring, which means a support ring in a circumferential groove of the Shaft sealing ring is set.
Zur Vermeidung des Eindringens von Schmutz in den Bereich der Dichtlippe werden bei Wellendichtringen im Einsatz von besonders schmutzbeaufschlagten Abdichtstellen schmutzabweisende Vliesscheiben über einen Metall- oder Kunststoffkäfig in einer Ausnehmung des Wellendichtringes festgelegt.To prevent dirt from entering The area of the sealing lip is used for shaft sealing rings in the Use of particularly contaminated Seals dirt-repellent fleece discs over a metal or plastic cage in a recess of the shaft seal.
Das DE-GM 73 28 356 offenbart einen gattungsgemäßen Wellendichtring. Um zu verhindern, daß Schmutzpartikel unter die Dichtlippe des Wellendichtringes gelangen, ist als Staubschutz ein luftdurchlässiger Filter in Form einer Vliesstoffscheibe, welche in einen Käfig eingebettet ist, in einer Ausnehmung des Wellendichtringes angeordnet. Der Käfig besteht aus Blech und umschließt den Staubschutzring über die Umfangsfläche bis in den Bereich der Stirnflächen.DE-GM 73 28 356 discloses a generic Shaft seal. To prevent dirt particles get under the sealing lip of the shaft sealing ring, is an air permeable filter in Shape of a nonwoven fabric disc, which in a cage is embedded in a recess of the Shaft seal arranged. The cage consists of Sheet metal and encloses the dust protection ring over the Circumferential surface up to the area of the end faces.
Der Nachteil dieser Konstruktion liegt in der ungenügenden Verdrehsicherung des Staubschutzringes. Der Staubschutzring kann innerhalb des Käfigs rotieren, so daß sich Schmutzpartikel zwischen Käfig und Staubschutzring einrollen und damit den relativ weichen Staubschutzring zerstören können.The disadvantage of this construction is that insufficient protection against rotation of the dust protection ring. The dust cover ring can be inside the cage rotate so that dirt particles between the cage and roll up the dust protection ring and thus the relative can destroy the soft dust protection ring.
Der Erfindung liegt die Aufgabe zugrunde, einen gattungsgemäßen Wellendichtring im Hinblick auf die Funktionssicherheit zu verbessern, wobei gleichzeitig die Herstellungskosten gesenkt werden.The invention has for its object a Generic shaft seal in view of the Improve operational safety, while at the same time manufacturing costs are reduced.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß der Schutzring ein radial nach außen spannender Federring ist, und daß der Federring auf einer Stirnfläche des Staubschutzringes angeordnet ist, derart, daß der Staubschutzring in der Nut unter axialem Druck festgelegt ist.This object is achieved in that the guard ring a radially outward exciting Spring ring is, and that the spring ring on a End face of the dust protection ring is arranged, such that the dust protection ring in the groove below axial pressure is fixed.
Auf diese Weise kann der Staubschutzring sehr leicht montiert werden, indem er zunächst in die Nut eingelegt und anschließend der Federring axial neben dem Staubschutzring eingebaut wird. Hierdurch wird der Staubschutzring axial deformiert, so daß er unter axialer Pressung in der Nut plaziert wird. Der Federring selbst erzeugt darüber hinaus eine radial nach außen wirkende Druckkraft, die dafür sorgt, daß Staubschutzring und Federring in der Nut nicht rotieren können.This way the dust cover ring can be very easily be mounted by first in the groove inserted and then the spring ring axially next to the dust protection ring is installed. This will make the Dust protection ring deformed axially so that it is under axial pressure is placed in the groove. The Spring ring itself also creates a radial outward pressure force, which ensures that Dust protection ring and spring washer in the groove are not can rotate.
Vorzugsweise besteht der Federring aus korrosionsgeschütztem Bandstahl. Die Herstellungskosten reduzieren sich somit auf ein Minimum, da der Federring durch Abtrennen vom Band auf jede beliebige Größe gefertigt werden kann, ohne daß zusätzliche Kosten anfallen.The spring ring preferably consists of corrosion-protected steel strip. The Manufacturing costs are thus reduced to one Minimum, because the spring washer by cutting off the band any size can be made without additional costs are incurred.
Um die Sicherheit gegen Verdrehen noch weiter zu verbessern, weist der Wellendichtring, über den Umfang verteilt, mehrere in den Bereich der Nut ragende, axial gerichtete Vorsprünge auf. Die Vorsprünge sind aus elastomerem Werkstoff gebildet und können kegelförmig ausgebildet sein.To further protect against twisting improve, the shaft seal points over the circumference distributed, several protruding into the area of the groove, axially directed projections. The tabs are made of elastomeric material and can be conical.
Die Erfindung ist in der Zeichnung anhand eines Ausführungsbeispieles dargestellt und wird im folgenden näher erläutert. Es zeigen:The invention is in the drawing based on a Embodiment shown and is in following explained in more detail. Show it:
Fig. 1 erfindungsgemäßer Wellendichtring im Halbschnitt; Fig. 1 shaft seal according to the invention in half section;
Fig. 2 Federring aus Fig. 1. Fig. 2 spring ring in FIG. 1.
Die Fig. 1 zeigt einen erfindungsgemäßen Wellendichtring (1) mit einer auf der abzudichtenden Mediumsseite angeordneten Dichtlippe (2) aus elastomerem Werkstoff und einem Staubschutzring (3) aus luftdurchlässigem Material, wie zum Beispiel Filz. Diese sogenannte Vliesscheibe (3) ist mittels eines erfindungsgemäßen Federringes (4) axial und radial innerhalb einer Nut (5) festgelegt. In der Nut sind formvulkanisierte kegelformige Vorsprünge (6) angeordnet, die sich in die Vliesscheibe (3) eingraben und so eine mechanische Verklammerung ermöglichen, so daß sich der Staubschutzring (3) nicht mit der abzudichtenden Welle (7) drehen kann. Fig. 1 shows a shaft sealing ring (1) according to the invention with a arranged on the medium to be sealed side of the sealing lip (2) made of elastomeric material and a dust protection ring (3) of air-permeable material, such as felt. This so-called fleece disc ( 3 ) is fixed axially and radially within a groove ( 5 ) by means of a spring ring ( 4 ) according to the invention. Form-vulcanized conical projections ( 6 ) are arranged in the groove, which dig into the fleece disc ( 3 ) and thus enable mechanical clamping, so that the dust protection ring ( 3 ) cannot rotate with the shaft ( 7 ) to be sealed.
Der Federring (4) ist als geschlitzter Bandstahlring (Fig. 2) ausgebildet. Der Durchmesser des Federringes (4) ist so ausgewählt, daß durch Zusammendrücken des Federringes (4), bis daß sich die Stoßenden (8, 9) berühren, dieser sich leicht über den Nutrand (10) in die Nut (5) eindrücken läßt. Nach dem Einpressen des Federringes (4) liegt die Vliesscheibe beziehungsweise der Staubschutzring (3) unter axialem Druck an den kegelförmigen Vorsprüngen (6) an, gleichzeitig spannt der Federring (4) radial nach außen und ist somit in der Nut (5) plaziert.The spring ring ( 4 ) is designed as a slotted band steel ring ( Fig. 2). The diameter of the spring ring ( 4 ) is selected so that by pressing the spring ring ( 4 ) together until the butt ends ( 8 , 9 ) touch, it can be easily pressed into the groove ( 5 ) via the groove edge ( 10 ). After the pressing of the spring ring (4) the non-woven disk is or the dust seal (3) under axial pressure to the cone-shaped projections (6) at the same time, the spring ring biases (4) radially outwardly and is thus placed in the groove (5).
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4213996A DE4213996A1 (en) | 1992-04-29 | 1992-04-29 | Shaft sealing ring with dust protector - has spring support ring fitting on end face of dust protection ring which is fixed in groove under axial pressure. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4213996A DE4213996A1 (en) | 1992-04-29 | 1992-04-29 | Shaft sealing ring with dust protector - has spring support ring fitting on end face of dust protection ring which is fixed in groove under axial pressure. |
Publications (1)
Publication Number | Publication Date |
---|---|
DE4213996A1 true DE4213996A1 (en) | 1993-11-04 |
Family
ID=6457685
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE4213996A Ceased DE4213996A1 (en) | 1992-04-29 | 1992-04-29 | Shaft sealing ring with dust protector - has spring support ring fitting on end face of dust protection ring which is fixed in groove under axial pressure. |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE4213996A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014055334A1 (en) * | 2012-10-04 | 2014-04-10 | Federal-Mogul Corporation | Radial shaft seal assembly with snap in auxiliary member |
CN111133236A (en) * | 2018-03-09 | 2020-05-08 | Nok株式会社 | Sealing device and assembling method thereof |
WO2022090030A1 (en) | 2020-11-02 | 2022-05-05 | Sew-Eurodrive Gmbh & Co. Kg | Arrangement for sealing a shaft by means of a shaft sealing ring, gear system having an arrangement and method for producing an arrangement |
DE102021120283A1 (en) | 2021-08-04 | 2023-02-09 | Carl Freudenberg Kg | sealing ring |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE813226C (en) * | 1950-02-16 | 1951-09-10 | Kupfer Asbest Co | A sealing ring consisting of a metallic housing and an elastic sleeve |
US2647808A (en) * | 1950-05-19 | 1953-08-04 | Samuel J Spurgeon | Bearing mounting for idler rolls and the like |
DE973597C (en) * | 1953-04-28 | 1960-04-07 | Eickhoff Maschinenfabrik Geb | Bearing seal for running or carrying rollers |
US3022081A (en) * | 1957-08-01 | 1962-02-20 | Victor Mfg & Gasket Co | Self-contained fluid seal |
US3086781A (en) * | 1960-02-29 | 1963-04-23 | Chicago Rawhide Mfg Co | Oil seal assemblies |
US3156474A (en) * | 1961-06-19 | 1964-11-10 | Chicago Rawhide Mfg Co | Self-contained oil seal assembly |
DE7328356U (en) * | 1973-11-29 | Freudenberg C | Sealing ring with dust protection, especially for shaft sealing | |
DE2621252A1 (en) * | 1976-05-13 | 1977-11-24 | Allweiler Ag | Axle sealing system with collar - has adjusting ring bearing against contact surface and has elastic intermediate layer |
US4277072A (en) * | 1978-12-15 | 1981-07-07 | Firma Carl Freudenberg | Seal for the gap between a revolving shaft and the bore of a housing against a mixture of a liquid and a gas |
EP0170928A1 (en) * | 1984-07-11 | 1986-02-12 | Martin Merkel GmbH & Co. KG | Shaft seal |
-
1992
- 1992-04-29 DE DE4213996A patent/DE4213996A1/en not_active Ceased
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE7328356U (en) * | 1973-11-29 | Freudenberg C | Sealing ring with dust protection, especially for shaft sealing | |
DE813226C (en) * | 1950-02-16 | 1951-09-10 | Kupfer Asbest Co | A sealing ring consisting of a metallic housing and an elastic sleeve |
US2647808A (en) * | 1950-05-19 | 1953-08-04 | Samuel J Spurgeon | Bearing mounting for idler rolls and the like |
DE973597C (en) * | 1953-04-28 | 1960-04-07 | Eickhoff Maschinenfabrik Geb | Bearing seal for running or carrying rollers |
US3022081A (en) * | 1957-08-01 | 1962-02-20 | Victor Mfg & Gasket Co | Self-contained fluid seal |
US3086781A (en) * | 1960-02-29 | 1963-04-23 | Chicago Rawhide Mfg Co | Oil seal assemblies |
US3156474A (en) * | 1961-06-19 | 1964-11-10 | Chicago Rawhide Mfg Co | Self-contained oil seal assembly |
DE2621252A1 (en) * | 1976-05-13 | 1977-11-24 | Allweiler Ag | Axle sealing system with collar - has adjusting ring bearing against contact surface and has elastic intermediate layer |
US4277072A (en) * | 1978-12-15 | 1981-07-07 | Firma Carl Freudenberg | Seal for the gap between a revolving shaft and the bore of a housing against a mixture of a liquid and a gas |
EP0170928A1 (en) * | 1984-07-11 | 1986-02-12 | Martin Merkel GmbH & Co. KG | Shaft seal |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014055334A1 (en) * | 2012-10-04 | 2014-04-10 | Federal-Mogul Corporation | Radial shaft seal assembly with snap in auxiliary member |
US9394998B2 (en) | 2012-10-04 | 2016-07-19 | Federal-Mogul Corporation | Radial shaft seal assembly with snap in auxiliary member |
CN111133236A (en) * | 2018-03-09 | 2020-05-08 | Nok株式会社 | Sealing device and assembling method thereof |
CN111133236B (en) * | 2018-03-09 | 2021-10-29 | Nok株式会社 | Sealing device and assembling method thereof |
WO2022090030A1 (en) | 2020-11-02 | 2022-05-05 | Sew-Eurodrive Gmbh & Co. Kg | Arrangement for sealing a shaft by means of a shaft sealing ring, gear system having an arrangement and method for producing an arrangement |
DE102021005232A1 (en) | 2020-11-02 | 2022-05-05 | Sew-Eurodrive Gmbh & Co Kg | Arrangement for sealing a shaft by means of a shaft sealing ring, transmission with an arrangement and method for producing an arrangement |
DE102021120283A1 (en) | 2021-08-04 | 2023-02-09 | Carl Freudenberg Kg | sealing ring |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
8131 | Rejection |