DE3909931A1 - Shaft-hub seal - Google Patents

Shaft-hub seal

Info

Publication number
DE3909931A1
DE3909931A1 DE3909931A DE3909931A DE3909931A1 DE 3909931 A1 DE3909931 A1 DE 3909931A1 DE 3909931 A DE3909931 A DE 3909931A DE 3909931 A DE3909931 A DE 3909931A DE 3909931 A1 DE3909931 A1 DE 3909931A1
Authority
DE
Germany
Prior art keywords
shaft
radially
sealing
hub
leg
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
DE3909931A
Other languages
German (de)
Inventor
Claus-Christian Dipl Ing Alt
Siegfried Gutfleisch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daimler Benz AG
Original Assignee
Daimler Benz AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Daimler Benz AG filed Critical Daimler Benz AG
Priority to DE3909931A priority Critical patent/DE3909931A1/en
Publication of DE3909931A1 publication Critical patent/DE3909931A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • 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
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/02—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions
    • F16D3/06—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions specially adapted to allow axial displacement
    • 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

Abstract

In the case of a shaft-hub seal with different pressures in the spaces to be axially separated from one another, the sealing element is designed as a ring with a U-shaped profile. The open U side faces the space at higher pressure, so that the U legs are radially forced apart to increase the sealing action. Of the two U legs of the sealing element, the one which bears fixedly against the opposed sealing surface is designed as a closed ring, in particular a sheet-metal ring, while the slidingly sealing second U leg consists of individual radially resilient tongues which are covered at least radially externally with a continuous elastomer layer having a radially sealing action.

Description

Die Erfindung betrifft eine Wellen-Naben-Dichtung nach dem Oberbegriff des Anspruchs 1.The invention relates to a shaft-hub seal according to the Preamble of claim 1.

Eine derartige Wellen-Naben-Dichtung ist aus CH-PS 2 84 519 bekannt. Die Dichtung ist dort insgesamt aus elastischem Material aufgebaut, wobei der gleitend dichtende U-Schenkel über eine radial wirkende Ringfeder an die Gegendichtfläche angepreßt wird. Die offene Seite des U-Profils des Dicht­ elementes ist demjenigen Raum zugekehrt, in dem von den beiden durch die Dichtung zu trennenden Räumen der höhere Druck herrscht.Such a shaft-hub seal is from CH-PS 2 84 519 known. The seal there is made entirely of elastic Material built up, with the sliding sealing U-leg via a radially acting ring spring to the counter sealing surface is pressed. The open side of the U-profile of the Dicht elementes faces the space in which the the higher of both rooms to be separated by the seal There is pressure.

Hiervon ausgehend liegt der Erfindung die Aufgabe zugrunde, einen stabileren und sicherer wirkenden Aufbau eines sol­ chen Dichtungselementes zu schaffen und zwar insbesondere, wenn das auf einer Seite der Atmosphäre ausgesetzte Dich­ tungselement auf der anderen Seite an eine Fettkammer an­ grenzt, die sicher gegen die Atmosphäre zu dichten ist. Da­ bei soll es sich bei den Welle-Naben-Paarungen bevorzugt um solche handeln, bei denen Welle und Nabe verdehfest gegen­ einander, jedoch axial verschiebbar miteinander verbunden sind und bei denen die so miteinander verbundenen Welle- Nabe-Teile gemeinsam mit hohen Drehzahlen rotieren. Außer­ dem soll die Festanlage des einen U-Schenkels an der be­ treffenden Gegendichtfläche äußerst verrutschsicher sein.Proceeding from this, the object of the invention is a more stable and secure-looking structure of a sol chen sealing element to create, in particular, if that exposes you to one side of the atmosphere tion element on the other side to a fat chamber borders, which is sure to be sealed against the atmosphere. There it should be preferred for the shaft-hub pairings act those in which the shaft and hub are resistant against connected to each other, but axially displaceable and in which the correlated waves Rotate hub parts together at high speeds. Except  the fixed system of a U-leg on the be hitting the counter-sealing surface must be extremely slip-proof.

Gelöst wird diese Aufgabe durch eine Ausbildung des Dicht­ elementes nach den kennzeichnenden Merkmalen des Anspruchs 1.This task is solved by training the seal element according to the characterizing features of the claim 1.

Eine besonders zweckmäßige Ausgestaltung ist Gegenstand des Unteranspruchs.A particularly useful embodiment is the subject of Subclaim.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt. Es zeigenAn embodiment of the invention is in the drawing shown. Show it

Fig. 1 einen Schnitt durch ein in eine Wellen-Nabenver­ bindung eingesetztes Dichtungselement Fig. 1 shows a section through a sealing element used in a shaft-Nabenver connection

Fig. 2 einen Schnitt durch das Dichtelement ohne Welle und Nabe nach Linie II-II in Fig. 1. Fig. 2 shows a section through the sealing element, without the hub and shaft along the line II-II in FIG. 1.

Zwei drehfest jedoch über eine Verzahnung gegeneinander längsverschiebbar miteinander verbundene mit sehr hohen Drehzahlen rotierende Wellen 1 und 2 sind an der Verbin­ dungsstelle fettgeschmiert. Zu diesem Zweck ist dort eine ringförmige Fettkammer 3 vorgesehen, deren radiale Außen­ wand beide Wellen 1 und 2 als eine Hülse 4 umgibt. Mit einer der beiden Wellen, hier beispielsweise der Welle 1, ist die Hülse 4 axial dicht fest verbunden. Auf der axial gegenüberliegenden Seite ist die Hülse 4 über ein ringför­ miges Dichtungselement 5 mit U-förmigem Querschnitt längs­ verschiebbar radial außen auf der Welle 2, die als Hohlwel­ le ausgebildet sein kann, gedichtet. Das mit seiner offenen Seite des U-Profils in die Fettkammer 3 weisende Dichtungs­ element 5 bewirkt, daß die U-Schenkel durch den sich bei schnell drehenden Wellen 1, 2 einstellenden hohen Druck in­ nerhalb der Fettkammer dichtend nach radial außen gedrückt werden. Dadurch ist die Dichtwirkung eines derart geformten Dichtungselementes 5 ganz hervorragend.Two rotatably but via a toothing against each other longitudinally connected with each other at very high speeds rotating shafts 1 and 2 are grease lubricated at the connec tion point. For this purpose an annular grease chamber 3 is provided, the radial outer wall of which surrounds both shafts 1 and 2 as a sleeve 4 . With one of the two shafts, here for example the shaft 1 , the sleeve 4 is axially tightly connected. On the axially opposite side, the sleeve 4 via a ringför shaped sealing element 5 with a U-shaped cross section is longitudinally displaceable radially on the outside on the shaft 2 , which can be designed as a hollow shaft. The pointing with its open side of the U-profile in the fat chamber 3 sealing element 5 causes the U-legs to be pressed sealingly radially outward within the fat chamber by the high pressure which is set in rapidly rotating shafts 1 , 2 . As a result, the sealing effect of a sealing element 5 shaped in this way is very excellent.

Das Dichtungselement 5 selbst besteht aus einem radial in­ nen liegenden geschlossenen Blechring, der denjenigen U- Schenkel bildet, der fest mit der Nabe oder der Welle, hier der Welle 2, verbunden ist. Die feste Verbindung ist hier­ bei insbesondere über einen Preßsitz erzielbar. Der dicht gleitend an der Gegendichtfläche, hier der Hülse 4, anlie­ gende U-Schenkel des Dichtungselementes 5 besteht aus ein­ zelnen durch axiale Schlitze voneinander getrennten von dem geschlossenen Blechring ausgehenden nach außen federnden Zungen 6. Diese Zungen 6 sind radial außen von einer um­ fangsmäßig geschlossenen Elastomerschicht 7 überzogen. Mit dieser geschlossenen Elastomerschicht 7 wird die Dichtungs­ wirkung des gleitend dichtenden U-Schenkels bewirkt. Diese Elastomerschicht kann an die federnden Metall-Zungen 6 an­ vulkanisiert sein. Durch die bei der Montage des Dichtele­ mentes 5 unter radialen Druck gesetzten federnden Zungen 6 liegt die Elastomerschicht 7 druckfest an der Hülse 4 an.The sealing element 5 itself consists of a radially in lying closed sheet metal ring, which forms the U-leg, which is firmly connected to the hub or the shaft, here the shaft 2 . The fixed connection can be achieved here in particular via a press fit. The tightly sliding on the counter-sealing surface, here the sleeve 4 , lying on U-leg of the sealing element 5 consists of an individual by axial slots separated from the closed sheet metal ring outgoing resilient tongues 6th These tongues 6 are radially covered on the outside by a circumferentially closed elastomer layer 7 . With this closed elastomer layer 7 , the sealing effect of the sliding sealing U-leg is effected. This elastomer layer can be vulcanized to the resilient metal tongues 6 . By mentes when mounting the like Tele 5 placed under radial compressive resilient tongues 6, the elastomer layer 7 is pressure-resistant against the sleeve. 4

Der Festsitz der Hülse 4 kann auf der Welle 1 ebenfalls über eine Elastomerschicht 8 erzielt werden.The tight fit of the sleeve 4 can also be achieved on the shaft 1 via an elastomer layer 8 .

Der besondere Vorteil der U-profilförmigen Dichtung besteht darin, daß bei einer solchen Profilform die Dichtwirkung mit auf die offene U-Seite zunehmendem Druck entsprechend zunimmt.The special advantage of the U-shaped seal is in that the sealing effect in such a profile shape with increasing pressure on the open U-side accordingly increases.

Claims (2)

1. Wellen-Naben-Dichtung mit unterschiedlichen Drücken in den axial gegeneinander zu dichtenden Räumen, bei der ein ringförmiges elastisch verformbares Dichtelement auf eines der Wellen- oder Naben-Teile verdrehfest aufgebracht ist, während es an dem jeweils anderen Wellen- oder Naben-Teil radial gleitend dicht anliegt und bei der dieses Dichtele­ ment ein mit seiner offenen Seite zu dem Raum mit höherem Druck ausgerichtetes U-Schenkel-Profil mit in Achsrichtung verlaufenden Schenkeln ist, von denen der verdrehfest ange­ brachte Schenkel ein geschlossener Ring ist, dadurch gekennzeichnet, daß der gleitfähige zweite Schenkel durch in Achsrichtung verlaufende Schlitze in über den gesamten Umfang verteilte radial federnde Zungen (6) aufgegliedert ist, wobei die fe­ dernden Zungen (6) zumindest radial augen mit einer durch­ gehenden radial dichtenden Elastomerschicht (7) überzogen sind, deren Elastizität größer als diejenige des übrigen Dichtungselemente (5) -Materials ist.1. Shaft-hub seal with different pressures in the spaces to be sealed axially against one another, in which an annular, elastically deformable sealing element is attached to one of the shaft or hub parts in a rotationally fixed manner, while it is on the other shaft or hub part is radially sliding tight and in which this Dichtele element with its open side to the room with higher pressure aligned U-leg profile with axially extending legs, of which the torsionally brought leg is a closed ring, characterized in that the slidable second leg is divided by axially extending slots into radially resilient tongues ( 6 ) distributed over the entire circumference, the resilient tongues ( 6 ) at least radially eyes being covered with a continuous radially sealing elastomer layer ( 7 ), the elasticity of which is larger than that of the remaining sealing elements ( 5 ) material . 2. Wellen-Naben-Dichtung nach Anspruch 1, dadurch gekennzeichnet, daß das Material des Dichtungselementes (5) bis auf die Elastomerschicht (7) Metall ist.2. Shaft-hub seal according to claim 1, characterized in that the material of the sealing element ( 5 ) except for the elastomer layer ( 7 ) is metal.
DE3909931A 1989-03-25 1989-03-25 Shaft-hub seal Withdrawn DE3909931A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE3909931A DE3909931A1 (en) 1989-03-25 1989-03-25 Shaft-hub seal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3909931A DE3909931A1 (en) 1989-03-25 1989-03-25 Shaft-hub seal

Publications (1)

Publication Number Publication Date
DE3909931A1 true DE3909931A1 (en) 1990-09-27

Family

ID=6377256

Family Applications (1)

Application Number Title Priority Date Filing Date
DE3909931A Withdrawn DE3909931A1 (en) 1989-03-25 1989-03-25 Shaft-hub seal

Country Status (1)

Country Link
DE (1) DE3909931A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4016748A1 (en) * 1990-05-25 1991-12-19 Teves Gmbh Alfred Pressure controller for vehicular antilock and antislip braking - includes construction in line from master cylinder to wheel brake cylinder with pressure limited by valve
DE4135867A1 (en) * 1991-10-31 1993-05-06 Alfred Teves Gmbh, 6000 Frankfurt, De CUFF RETURN VALVE
DE4412917A1 (en) * 1994-04-15 1995-10-19 Schaeffler Waelzlager Kg Hydraulically actuated device for disengagement of vehicle clutch
WO1999041514A1 (en) * 1998-02-12 1999-08-19 Rockford Powertrain, Inc. Slip driveline with a seal arrangement
DE10114019C1 (en) * 2001-03-22 2002-10-24 Porsche Ag Four-wheel drive system for road vehicle has external splines on end of gearbox output shaft in differential engaging internal splines in end of differential input shaft

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE800801C (en) * 1949-04-09 1950-12-07 Hermann Dr-Ing Klaue Rubber seal for air brakes
DE838980C (en) * 1943-09-19 1952-05-15 Teves Kg Alfred Ring sleeve of larger diameter, especially for hydraulic brakes
CH284519A (en) * 1951-06-10 1952-07-31 Schmid Walter Auxiliary drilling device.
US4133542A (en) * 1976-08-31 1979-01-09 Robert Janian Spring seal

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE838980C (en) * 1943-09-19 1952-05-15 Teves Kg Alfred Ring sleeve of larger diameter, especially for hydraulic brakes
DE800801C (en) * 1949-04-09 1950-12-07 Hermann Dr-Ing Klaue Rubber seal for air brakes
CH284519A (en) * 1951-06-10 1952-07-31 Schmid Walter Auxiliary drilling device.
US4133542A (en) * 1976-08-31 1979-01-09 Robert Janian Spring seal

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4016748A1 (en) * 1990-05-25 1991-12-19 Teves Gmbh Alfred Pressure controller for vehicular antilock and antislip braking - includes construction in line from master cylinder to wheel brake cylinder with pressure limited by valve
DE4135867A1 (en) * 1991-10-31 1993-05-06 Alfred Teves Gmbh, 6000 Frankfurt, De CUFF RETURN VALVE
DE4412917A1 (en) * 1994-04-15 1995-10-19 Schaeffler Waelzlager Kg Hydraulically actuated device for disengagement of vehicle clutch
WO1999041514A1 (en) * 1998-02-12 1999-08-19 Rockford Powertrain, Inc. Slip driveline with a seal arrangement
DE10114019C1 (en) * 2001-03-22 2002-10-24 Porsche Ag Four-wheel drive system for road vehicle has external splines on end of gearbox output shaft in differential engaging internal splines in end of differential input shaft

Similar Documents

Publication Publication Date Title
DE1946220U (en) SEAL RING.
DE2923600C2 (en) Sealing device
DE7514616U (en) SEALED JOINT
DE1285264B (en) Ring seal for hydraulic stamp or the like.
DE2637803A1 (en) WORKING CYLINDERS FOR PNEUMATIC OR HYDRAULIC PRESSURE MEDIA
DE1775646C3 (en) Seal arrangement for high pressures and temperatures
DE3337033A1 (en) AXLE OR SHAFT SEAL
DE1525702A1 (en) Seal for a rotating shaft
DE2264448A1 (en) INNER SEAL FOR PISTON OF ROTATING PISTON - INTERNAL ENGINEERING MACHINERY
DE1475705B2 (en) VIBRATION DAMPING DEVICE FOR ROTATING MACHINE PARTS
DE2908631C2 (en) Valve seal
DE3909931A1 (en) Shaft-hub seal
DE60104329T2 (en) SHAFT SEAL
DE2648519C2 (en) Butterfly valve
WO1997043571A1 (en) Pipe coupling
DE3543160C2 (en)
DE3431990A1 (en) Sleeve for seals, preferably for radial shaft-sealing rings
DE2205195A1 (en) Mechanical seal
DE4317483A1 (en) Piston, particularly for the turbo cylinder of a power-assisted steering system
DE3126716C2 (en) Sealing arrangement
DE7829170U1 (en) Double-acting rubber bellows seal
DE3243633C2 (en) Mechanical seal
DE2218376A1 (en) Composite sealing ring - having harder nose to prevent jamming between components sealed
DE19615931A1 (en) Cassette seal arrangement consisting of two rings
DE2430072A1 (en) SPREADER FOR PISTON RINGS

Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
8130 Withdrawal