AT502383B1 - Rotary feed through device for use within wheel bearing unit of motor vehicle, has air passages sealed with respect to one another using radial seals that are arranged between wheel bearing ball races - Google Patents

Rotary feed through device for use within wheel bearing unit of motor vehicle, has air passages sealed with respect to one another using radial seals that are arranged between wheel bearing ball races Download PDF

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Publication number
AT502383B1
AT502383B1 AT0051806A AT5182006A AT502383B1 AT 502383 B1 AT502383 B1 AT 502383B1 AT 0051806 A AT0051806 A AT 0051806A AT 5182006 A AT5182006 A AT 5182006A AT 502383 B1 AT502383 B1 AT 502383B1
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AT
Austria
Prior art keywords
air passages
radial shaft
bearing
wheel bearing
radial
Prior art date
Application number
AT0051806A
Other languages
German (de)
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AT502383A4 (en
Inventor
Gerhard Dipl Ing Dr Skoff
Heinz Ing Milchrahm
Franz Prendl
Original Assignee
Steyr Daimler Puch 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 Steyr Daimler Puch Ag filed Critical Steyr Daimler Puch Ag
Priority to AT0051806A priority Critical patent/AT502383B1/en
Application granted granted Critical
Publication of AT502383A4 publication Critical patent/AT502383A4/en
Publication of AT502383B1 publication Critical patent/AT502383B1/en
Priority to PCT/AT2007/000129 priority patent/WO2007109818A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B27/00—Hubs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
    • B60C23/001—Devices for manually or automatically controlling or distributing tyre pressure whilst the vehicle is moving
    • B60C23/003—Devices for manually or automatically controlling or distributing tyre pressure whilst the vehicle is moving comprising rotational joints between vehicle-mounted pressure sources and the tyres
    • B60C23/00345—Details of the rotational joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
    • B60C23/001—Devices for manually or automatically controlling or distributing tyre pressure whilst the vehicle is moving
    • B60C23/003—Devices for manually or automatically controlling or distributing tyre pressure whilst the vehicle is moving comprising rotational joints between vehicle-mounted pressure sources and the tyres
    • B60C23/00363—Details of sealings
    • 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
    • F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
    • F16C19/18—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls
    • F16C19/181—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact
    • F16C19/183—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles
    • F16C19/184—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles in O-arrangement
    • F16C19/185—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles in O-arrangement with two raceways provided integrally on a part other than a race ring, e.g. a shaft or housing
    • 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
    • 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
    • F16C41/00—Other accessories, e.g. devices integrated in the bearing not relating to the bearing function as such
    • F16C41/005—Fluid passages not relating to lubrication or cooling
    • 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
    • F16C2326/00—Articles relating to transporting
    • F16C2326/01—Parts of vehicles in general
    • F16C2326/02—Wheel hubs or castors

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

The device has an inner bearing part, an outer bearing part, two wheel bearing ball races (3, 4) and two air passages (7, 8). The inner bearing part comprises two components (1, 2) and the outer bearing part comprises two components (5, 6). The air passages are sealed at an outside of the feed through device with respect to the wheel bearing ball races, and are sealed with respect to one another using radial seals (9, 10, 11). The radial seals are arranged between the wheel bearing ball races.

Description

2 AT 502 383 B12 AT 502 383 B1

Die Erfindung bezieht sich auf eine Drehdurchführung innerhalb einer Radlagereinheit für eine Reifenfüll- oder Reifendruckregelanlage für Kraftfahrzeuge, bestehend aus einem inneren Lagerteil, einem äußeren Lagerteil, zwei Radlagerkugelkränzen und zwei Luftpassagen. 5 Aus der DE 10323449 A1, der DE 10324410 A1 oder aus der EP 0713021 A1 ist jeweils eine Lagereinheit eines mit einem Reifenaufpumpsystem ausgestatteten Fahrzeugrades bekannt, wobei zwischen den beiden Kugellaufbahnen zwei Dichtungen auf der äußeren Kugelschale eingebracht sind, die eine in die äußere Kugelschale eingebrachte Luftpassage gegen die symmetrisch zweigeteilten Innenhalbschalen abdichten. 10The invention relates to a rotary feedthrough within a wheel bearing unit for a Reifenfüll- or tire pressure control system for motor vehicles, consisting of an inner bearing part, an outer bearing part, two Radlagerkugelkränzen and two air passages. A bearing unit of a vehicle wheel equipped with a tire inflation system is known from DE 10323449 A1, DE 10324410 A1 or from EP 0713021 A1, wherein two seals are placed on the outer spherical shell between the two ball raceways, which introduces a bearing into the outer spherical shell Seal the air passage against the symmetrical two-part inner half shells. 10

Eine ähnliche Einrichtung ist z.B. in der EP 0656267 A1 beschrieben. Dabei liegen im Wesentlichen die Dichtungen auf den inneren Kugelhalbschalen an schrägen Flächen an, um die Dichtwirkung zu verbessern. is Bei den Lösungen gemäß dem Stand der Technik werden die Dichtlippen der integrierten Dichtungen durch die Dauerschmierung der Lager mitgeschmiert. Ohne diese Schmierung würden die Dichtlippen bereits nach kurzer Laufzeit verschleißen und könnten ihre Dichtfunktion nicht mehr erfüllen. Bei einer derartigen Ausführung ist es nicht möglich, eine zweite Luftpassage in das Lager zu integrieren, da die Abdichtung zwischen den beiden Luftpassagen nicht ge-20 schmiert werden kann und daher nach kurzer Betriebsdauer versagen würde. Darüber hinaus begrenzen Steifigkeitsforderungen die konstruktive Breite der Lagereinheit. Eine zweite Luftpassage würde die Lagerhälften soweit verbreitern, dass nur große Materialzugaben die erforderliche Steifigkeit des breiten Lagerringes ermöglichen würden, was in der Praxis in vielen Fällen die Anwendung aufgrund der begrenzten Verhältnisse sowohl in Bezug auf Raum als 25 auch auf Gewicht verhindern würde.A similar device is e.g. described in EP 0656267 A1. Essentially, the gaskets on the inner spherical half-shells abut inclined surfaces in order to improve the sealing effect. In the solutions according to the prior art, the sealing lips of the integrated seals are lubricated by the permanent lubrication of the bearings. Without this lubrication, the sealing lips would wear after a short period of time and could no longer fulfill their sealing function. In such an embodiment, it is not possible to integrate a second air passage in the bearing, since the seal between the two air passages can not be lubricated ge and therefore would fail after a short period of operation. In addition, stiffness requirements limit the constructive width of the bearing unit. A second air passage would widen the bearing halves to the extent that only large material additions would provide the required stiffness of the wide bearing ring, which in practice would in many cases prevent its application due to limited space, both space and weight.

Aus der EP 1 141 595 A1 ist eine Lösung für die Schmierung einer Drehdurchführung in einer Radnabe mit zwei Luftpassagen bekannt. Dabei wird im Wesentlichen im Nabenteil Schmierfett über Bohrungen der Dichtstelle zugeführt. Bei den bekannten Anwendungen ist eine derartige 30 Lösung wirtschaftlich nicht durchführbar, da die Lagerlaufschalen aus gehärtetem Stahl mit relativ geringen Wandstärken bestehen und die erforderlichen Längs- und Querbohrungen nicht in einfacher Weise eingebracht werden können.From EP 1 141 595 A1 a solution for the lubrication of a rotary feedthrough in a wheel hub with two air passages is known. In this case, grease is supplied via holes of the sealing point essentially in the hub part. In the known applications, such a solution is not feasible economically, since the bearing races made of hardened steel with relatively small wall thicknesses and the required longitudinal and transverse bores can not be introduced in a simple manner.

Die vorliegende Erfindung hat sich zur Aufgabe gestellt, innerhalb der beiden Lagerlaufflächen 35 eines integrierten Radlagers zwei voneinander getrennte pneumatische Luftdurchführungen zu ermöglichen, und gleichzeitig die Lagersteifigkeit ohne nennenswerte Materialzugaben zu erhöhen.The present invention has set itself the task within the two bearing surfaces 35 of an integrated wheel bearing to enable two separate pneumatic air ducts, and at the same time to increase the bearing stiffness without significant additions of material.

Erreicht wird dies dadurch, dass der innere Lagerteil aus zumindest zwei Teilen besteht, und 40 der äußere Lagerteil aus zumindest zwei Teilen besteht und zwischen den beiden Radlagerkugelkränzen zwei nach außen zu den Radlagerkugelkränzen und zueinander mittels Radialdichtungen abgedichtete Luftpassagen bestehen.This is achieved in that the inner bearing part consists of at least two parts, and 40 of the outer bearing part consists of at least two parts and exist between the two Radlagerkugelkränzen two outwardly to the Radlagerkugelkränzen and each other by means of radial seals sealed air passages.

Durch die vorgeschlagene Lösung kann die gesamte Breite der Radlager-Dichtungseinheit für 45 eine Reifenfüll- oder Reifendruckregelanlage in Zweileiterausführung, wie sie z.B. in AT 408 867 B beschrieben ist, auf ein Minimum reduziert werden, und gleichzeitig eine Versteifung der Radlagerung erreicht werden, da die Stützweite der beiden Lagerlaufbahnen vergrößert wird. so Eine beispielhafte Ausführung der vorgeschlagenen Erfindung ist nachfolgend beschrieben und in der Zeichnung dargestellt, die einen Schnitt durch ein erfindungsgemäßes Radlager wiedergibt.By the proposed solution, the entire width of the wheel bearing sealing unit for a tire inflation or tire pressure control system in two-wire design, as e.g. in AT 408 867 B is to be reduced to a minimum, and at the same time a stiffening of the wheel bearing can be achieved, since the span of the two bearing races is increased. An exemplary embodiment of the proposed invention is described below and illustrated in the drawing, which shows a section through a wheel bearing according to the invention.

Zwischen den Lagerlaufbahnen der beiden Radlagerkugelkränze 3, 4 sind zwei Luftpassagen 7, 55 8 angeordnet, die jeweils axial nach außen mittels eines Radialwellendichtringes 9 und 10 zuBetween the bearing tracks of the two Radlagerkugelkränze 3, 4, two air passages 7, 55 8 are arranged, each axially outwardly by means of a radial shaft sealing ring 9 and 10 to

Claims (1)

3 AT 502 383 B1 den Radlagerkugelkränzen 3, 4 abgedichtet sind. Die beiden Luftpassagen 7, 8 sind durch eine Radialwellendichtung 11 pneumatisch getrennt. Es liegt in der Eigenheit von Radialwellendichtringen, dass die Hauptdichtrichtung zur offenen 5 Seite des Dichtringes liegt, das heißt, dass die offene Seite der Radialwellendichtung 11 zur Druckseite der Luftpassage gerichtet sein muss. Um eine sichere Abdichtung der beiden Luftpassagen 7 und 8 zueinander zu gewährleisten, müßte daher die Radialwellendichtung 11 zwischen den beiden Luftpassagen 7 und 8 aus zwei einzelnen spiegelsymmetrischen Radialwellendichtringen bestehen, die die jeweils offene Seite in Richtung der jeweiligen Luftpassage io ausgerichtet haben. Wenn es im Rahmen der Funktion der Reifenfülleinrichtung sichergestellt ist, dass stets ein gleich gerichteter Druckgradient zwischen den Luftpassagen 7 und 8 vorherrscht, kann, so wie in Fig. 1 dargestellt, die Radialwellendichtung 11 auch nur einen Radialwellendichtring aufweisen, der seine offene Seite in Richtung des höheren Druckes ausgerichtet hat. In der in Fig. 1 dargestellten Weise müsste stets in der Luftpassage 8 ein höherer Druck 15 vorherrschen als in der Luftpassage 7. Eine derartige Vereinfachung bringt neben Kostenvorteilen auch wesentliche Vorteile in der Bauraumgestaltung mit sich. Der innere Lagerteil ist in zumindest zwei Teile 1 und 2 geteilt, wobei in einer bevorzugten Ausführung, wie in Fig. 1 dargestellt, der Teil 1 als der innere Teil der Radnabe ausgebildet ist. 20 Der Teil 1 muss nur im Bereich der Lagerlaufbahn und im Bereich der Dichtungslaufflächen entsprechend oberflächengehärtet sein. Der zweite Teil 2 des inneren Lagerteils ist in axialer Richtung auf dem ersten Teil 1 aufgesteckt und verschiebbar, sodass das Spiel des Lagers in bekannter Weise eingestellt und z.B. mittels einer hier nicht dargestellten Nutmutter fixiert werden kann. 25 Die Schmierung der die beiden Luftpassagen 7 und 8 der Drehdurchführung trennenden Radialwellendichtung 11 erfolgt ähnlich wie in EP 1 141 595 A1 beschrieben. Analog zur EP 1 141 595 A1 ist im Teil 1 in axialer Richtung zumindest eine Querbohrung 15 vorgesehen; von dieser führt zumindest eine Radialbohrung 13 zu einem Hohlraum 20, der durch die dach-30 förmige Ausführung der die beiden Luftpassagen 7 und 8 gegeneinander abdichtenden Radialwellendichtung 11 gebildet ist, und über den die Dichtungslauffläche der Radialwellendichtung 11 geschmiert werden kann. In einer bevorzugten Ausführung sind auch die beiden axial äußeren Radialdichtungen 9 und 10 35 mit einem dachförmigen Ringspalt 21, 22 an der Dichtfläche ausgebildet, und werden analog der Radialwellendichtung 11 über Radialbohrungen 12 und 14 und der axialen Querbohrung 15 mit Schmiermittel versorgt. Damit sind sie unabhängig von der Schmiermittelversorgung der Radlagerkugelkränze 3 und 4. 40 Um eine Montage der Dichtungen 9, 10 und 11 innerhalb der beiden Radlagerkugelkränze 3 und 4 zu ermöglichen, besteht die äußere Lagerschale aus zumindest zwei Teilen 5 und 6. In einer bevorzugten Ausführung trägt der eine Lagerschalenteil 6 die Dichtungen 9, 10 und 11 und ist gleichzeitig als äußerer Radnabenteil ausgeführt, um die Radlagerung mit möglichst wenigen einzelnen Bauteilen zu gestalten. 45 Der Luftstrom erfolgt über die Bohrungen 16 und 17 im äußeren Nabenteil 6 durch die Luftpassagen 7, 8 und über Bohrungen 18 und 19 im inneren Nabenteil. Die Enden der Luftbohrungen 16, 17, 18, 19 können in weiterer Folge mit hier nicht näher dargestellten Anschlussstücken oder Dichtflächen versehen sein. 50 Patentansprüche: 1. Drehdurchführung innerhalb einer Radlagereinheit für eine Reifenfüll- oder Reifendruckes regelanlage für Kraftfahrzeuge, bestehend aus einem inneren Lagerteil (1), einem äußeren 4 AT 502 383 B1 5 Lagerteil (6), zwei Radlagerkugelkränzen (3, 4) und zwei Luftpassagen (7, 8), dadurch gekennzeichnet, dass der innere Lagerteil aus zumindest zwei Teilen (1, 2) besteht, und der äußere Lagerteil aus zumindest zwei Teilen (5, 6) besteht und zwischen den beiden Radlagerkugelkränzen (3, 4) zwei nach außen zu den Radlagerkugelkränzen (3, 4) und zueinander mittels Radialdichtungen (9,10,11) abgedichtete Luftpassagen (7, 8) bestehen. 2. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, dass zur Dichtung zwischen den beiden Luftpassagen (7, 8) nur ein Radialwellendichtring (11) angeordnet ist. io 3. Einrichtung nach Anspruch 2, dadurch gekennzeichnet, dass die offene Seite des Radialwellendichtringes (11) in Richtung der Luftpassage mit dem höheren Druck zeigt. 4. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, dass ein Teil (1) des geteilten inneren Lagerteiles der Radnabeninnenteil ist. 15 5. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, dass ein Teil (6) des geteilten äußeren Lagerteiles der Radnabenaußenteil ist. 20 Hiezu 1 Blatt Zeichnungen 25 30 35 40 45 50 553 AT 502 383 B1 the wheel bearing ball rings 3, 4 are sealed. The two air passages 7, 8 are pneumatically separated by a radial shaft seal 11. It is in the nature of radial shaft seals that the main sealing direction to the open 5 side of the sealing ring, that is, that the open side of the radial shaft seal 11 must be directed to the pressure side of the air passage. In order to ensure a secure sealing of the two air passages 7 and 8 to each other, therefore, the radial shaft seal 11 between the two air passages 7 and 8 should consist of two individual mirror-symmetrical radial shaft seals, which have aligned the respective open side in the direction of the respective air passage io. If it is ensured in the context of the function of the tire filling device that there is always an equal pressure gradient between the air passages 7 and 8, as shown in Fig. 1, the radial shaft seal 11 may also have only one radial shaft sealing ring, its open side in the direction has aligned the higher pressure. In the manner shown in FIG. 1, a higher pressure 15 would always have to prevail in the air passage 8 than in the air passage 7. Such a simplification, in addition to cost advantages, also brings about considerable advantages in the design of the installation space. The inner bearing part is divided into at least two parts 1 and 2, wherein in a preferred embodiment, as shown in Fig. 1, the part 1 is formed as the inner part of the wheel hub. Part 1 only needs to be surface hardened in the area of the bearing raceway and in the area of the sealing surfaces. The second part 2 of the inner bearing part is plugged and slidable in the axial direction on the first part 1, so that the play of the bearing is set in a known manner and, for example can be fixed by means of a not shown here nut. The lubrication of the two air passages 7 and 8 of the rotary feedthrough separating radial shaft seal 11 is similar to that described in EP 1 141 595 A1. Analogously to EP 1 141 595 A1, at least one transverse bore 15 is provided in part 1 in the axial direction; from this leads at least one radial bore 13 to a cavity 20 which is formed by the roof-30-shaped design of the two air passages 7 and 8 against each other sealing radial shaft seal 11, and over which the seal running surface of the radial shaft seal 11 can be lubricated. In a preferred embodiment, the two axially outer radial seals 9 and 10 35 are formed with a roof-shaped annular gap 21, 22 on the sealing surface, and are supplied analogously to the radial shaft seal 11 via radial bores 12 and 14 and the axial transverse bore 15 with lubricant. Thus, they are independent of the supply of lubricant to the wheel bearing ball races 3 and 4. 40 In order to allow mounting of the seals 9, 10 and 11 within the two wheel bearing ball races 3 and 4, the outer bearing shell consists of at least two parts 5 and 6. In a preferred embodiment carries a bearing shell part 6, the seals 9, 10 and 11 and is also designed as an outer Radnabenteil to make the wheel bearing with as few individual components. 45 The air flow takes place via the holes 16 and 17 in the outer hub part 6 through the air passages 7, 8 and through holes 18 and 19 in the inner hub part. The ends of the air bores 16, 17, 18, 19 can be provided in a further consequence with connecting pieces or sealing surfaces, not shown here. 50 claims: 1. Rotary feedthrough within a wheel bearing unit for a Reifenfüll- or tire pressure control system for motor vehicles, consisting of an inner bearing part (1), an outer 4 AT 502 383 B1 5 bearing part (6), two Radlagerkugelkränzen (3, 4) and two Air passages (7, 8), characterized in that the inner bearing part consists of at least two parts (1, 2), and the outer bearing part of at least two parts (5, 6) and between the two Radlagerkugelkränzen (3, 4) two to the outside to the wheel bearing ball and cage assemblies (3, 4) and each other by means of radial seals (9,10,11) sealed air passages (7, 8) exist. 2. Device according to claim 1, characterized in that the seal between the two air passages (7, 8) only one radial shaft sealing ring (11) is arranged. 3. Device according to claim 2, characterized in that the open side of the radial shaft sealing ring (11) points in the direction of the air passage with the higher pressure. 4. Device according to claim 1, characterized in that a part (1) of the divided inner bearing part of the hub inner part is. 5. A device according to claim 1, characterized in that a part (6) of the divided outer bearing part of the wheel hub outer part is. 20 For 1 sheet of drawings 25 30 35 40 45 50 55
AT0051806A 2006-03-28 2006-03-28 Rotary feed through device for use within wheel bearing unit of motor vehicle, has air passages sealed with respect to one another using radial seals that are arranged between wheel bearing ball races AT502383B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AT0051806A AT502383B1 (en) 2006-03-28 2006-03-28 Rotary feed through device for use within wheel bearing unit of motor vehicle, has air passages sealed with respect to one another using radial seals that are arranged between wheel bearing ball races
PCT/AT2007/000129 WO2007109818A1 (en) 2006-03-28 2007-03-16 Rotary leadthrough within a wheel bearing unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT0051806A AT502383B1 (en) 2006-03-28 2006-03-28 Rotary feed through device for use within wheel bearing unit of motor vehicle, has air passages sealed with respect to one another using radial seals that are arranged between wheel bearing ball races

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AT502383A4 AT502383A4 (en) 2007-03-15
AT502383B1 true AT502383B1 (en) 2007-03-15

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WO (1) WO2007109818A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2354603A1 (en) * 2010-02-09 2011-08-10 Carl Freudenberg KG Seal between a fixed machine component and a second machine component rotating around it
CN113504053B (en) * 2021-06-17 2023-03-28 同济大学 Front axle assembly of automatic driving test target vehicle carrying platform

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2634782A (en) * 1950-10-30 1953-04-14 Bendix Westinghouse Automotive Tire inflation control system
US2768843A (en) * 1953-06-05 1956-10-30 Thew Shovel Co Multiple passage fluid coupling for power steering of cranes and the like
AT3682U1 (en) * 1999-01-13 2000-06-26 Steyr Daimler Puch Ag ARRANGEMENT WITH CONCENTRICALLY ARRANGED AND RELATIVELY ROTATABLE COMPONENTS AND USE OF THIS ARRANGEMENT IN A TIRE INFLATION SYSTEM
DE602005024368D1 (en) * 2004-02-18 2010-12-09 Ntn Toyo Bearing Co Ltd BEARING DEVICE FOR WHEEL
DE102004021161B4 (en) * 2004-04-29 2008-01-17 Kessler & Co. Gmbh & Co. Kg Rotary feedthrough of a tire pressure control

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WO2007109818A1 (en) 2007-10-04

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