WO2007022893A1 - Strut bearing - Google Patents

Strut bearing Download PDF

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Publication number
WO2007022893A1
WO2007022893A1 PCT/EP2006/008009 EP2006008009W WO2007022893A1 WO 2007022893 A1 WO2007022893 A1 WO 2007022893A1 EP 2006008009 W EP2006008009 W EP 2006008009W WO 2007022893 A1 WO2007022893 A1 WO 2007022893A1
Authority
WO
WIPO (PCT)
Prior art keywords
cage
bearing
strut bearing
suspension strut
running
Prior art date
Application number
PCT/EP2006/008009
Other languages
German (de)
French (fr)
Inventor
Alexander Zernickel
Gerhard Meyer
Original Assignee
Schaeffler Kg
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 Schaeffler Kg filed Critical Schaeffler Kg
Publication of WO2007022893A1 publication Critical patent/WO2007022893A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G15/00—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type
    • B60G15/02—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring
    • B60G15/06—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper
    • B60G15/067—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper characterised by the mounting on the vehicle body or chassis of the spring and damper unit
    • B60G15/068—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper characterised by the mounting on the vehicle body or chassis of the spring and damper unit specially adapted for MacPherson strut-type suspension
    • 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
    • F16C19/10—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for axial 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
    • F16C27/00—Elastic or yielding bearings or bearing supports, for exclusively rotary movement
    • F16C27/06—Elastic or yielding bearings or bearing supports, for exclusively rotary movement by means of parts of rubber or like materials
    • F16C27/066—Ball or roller bearings
    • 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
    • F16C27/00—Elastic or yielding bearings or bearing supports, for exclusively rotary movement
    • F16C27/08—Elastic or yielding bearings or bearing supports, for exclusively rotary movement primarily for axial load, e.g. for vertically-arranged shafts
    • 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
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/38—Ball cages
    • F16C33/3806—Details of interaction of cage and race, e.g. retention, centring
    • 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
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/38—Ball cages
    • F16C33/3837—Massive or moulded cages having cage pockets surrounding the balls, e.g. machined window cages
    • F16C33/3843—Massive or moulded cages having cage pockets surrounding the balls, e.g. machined window cages formed as one-piece cages, i.e. monoblock cages
    • F16C33/3856—Massive or moulded cages having cage pockets surrounding the balls, e.g. machined window cages formed as one-piece cages, i.e. monoblock cages made from plastic, e.g. injection moulded window cages
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/40—Auxiliary suspension parts; Adjustment of suspensions
    • B60G2204/418—Bearings, e.g. ball or roller bearings
    • 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
    • F16C2326/05—Vehicle suspensions, e.g. bearings, pivots or connecting rods used therein

Definitions

  • the invention relates to a suspension strut bearing for rotatably supporting a spring support in suspension struts which are associated with vehicle wheels, comprising an axial rolling bearing with two running disks, between which rolling bodies roll on associated raceways, wherein a running disk of a
  • Housing upper part and a running disk is accommodated by a lower housing part.
  • Strut bearings of known types serve to keep the resulting from the suspension of a motor vehicle vibrations from the body.
  • the associated with the suspension strut bearing, upper ends of the struts are at one time received in a damping spring, which is supported on the lower outer circumference of the suspension strut bearing.
  • This suspension is known as the Mc Pherson principle.
  • DE 295 06 796 U1 the support of the vehicle weight on a strut bearing and associated strut tube to a vehicle is shown and described in detail.
  • Another such generic trained strut bearing is previously known from DE 26 38 748 C2. It consists of a two-disk thrust ball bearing, which are each received by a top and a lower part of a plastic. The lower part and the upper part are connected by snap-fit with each other, so that a captive bearing assembly is formed.
  • the expert is also known that in addition to axial vibrations that are damped by additional rubber elements, and torsional vibrations occur, which can be attenuated by an increased friction torque of the suspension strut bearing. In this case, it is customary to dampen such torsional vibrations by increasing the frictional torque of the suspension strut bearing via a sliding seal. Due to the bearing loads and the resulting bearing deformations, this solution is subject to large Reibmomentschwankept. In addition, the friction torque is dependent on the wear and changes significantly during the service life.
  • the invention is therefore based on the object to realize occurring torsional vibrations in a strut bearing in a previously unknown manner on the increase of the friction torque.
  • this object is achieved according to the characterizing part of claim 1 in conjunction with the preamble thereof in that the rolling elements are arranged in pockets of a cage, which is provided with means for increasing the Lagerreibmomentes.
  • a bearing cage is in most cases an inherent part of almost every type of bearing and ensures that a particularly smooth running of the bearing assembly is ensured.
  • the strut bearing can also be installed more easily since the handling of a Wälz stresses- wreath is much easier than the handling of a plurality of individual rolling elements.
  • the connection of the bearing cage and the increase in the frictional torque do not require any additional component to be manufactured and be handled.
  • a bearing cage formed according to the invention retains an almost constant frictional torque over its entire service life, ie it is independent of wear.
  • the cage is formed as a corrugated spring, wherein in each case wave crests against the one disc and troughs on the associated other running disk.
  • Claim 4 provides that the cage in the circumferential direction uniformly spaced friction cams, which are arranged both in the axial direction at the top and at the bottom.
  • the friction cams are to be arranged in the axial direction at the top and at the bottom so that each a friction cam on top between two friction cams on the bottom and vice versa is arranged.
  • the friction cams are to be arranged between the pockets of a cage and consist of two spaced apart in the radial direction by a space circular arc-shaped segments.
  • the cage should be made of a rubber-elastic material or of an elastic plastic. This elastic training ensures in particular that the friction torque remains almost constant throughout the term.
  • the upper housing part and lower housing part are made of a plastic and are positively connected by snap-together. In this way, a captive contiguous strut bearing assembly is formed, which can be handled in a simple manner.
  • FIG. 2 shows a side view of a cage designed according to the invention for a suspension strut bearing
  • FIG. 3 shows a plan view of a further bearing cage according to the invention
  • Figure 4 is a section along the line IV - IV in Figure 3 and
  • FIG. 5 shows an enlarged view of a detail from FIG. 4. Detailed description of the drawings
  • FIG. 1 shows the basic structure of a suspension strut bearing 1, comprising an upper housing part 2 and a lower housing part 3, between which an axial rolling bearing 7 is arranged.
  • the suspension strut bearing 1 When installed, the suspension strut bearing 1 is supported via the housing upper part 2 at least indirectly on a vehicle body, not shown.
  • the lower housing part 3 designed as a spring support, a helical spring of the strut is centered in a manner not shown.
  • the axial rolling bearing 7 comprises an upper and a lower running disk 8, 9, which cover the upper part of the housing

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

Abstract

The invention relates to strut bearings (1) for the rotatable support of a spring housing in suspension struts provided for vehicle wheels, comprising an axial roller bearing (7) with two running discs (8, 9), between which roller bodies (11) roll on corresponding roller tracks. One running disc (8) is housed in an upper housing piece (2) and one running disc (9) is housed in a lower housing piece (3). The suspension strut bearing (1) is characterised in that the roller bodies (10) are arranged in the pockets (19) of a cage (12, 18), provided with means for increasing the bearing frictional torque.

Description

Federbeinlager Strut mounts
Anwendungsgebiet der ErfindungField of application of the invention
Die Erfindung betrifft ein Federbeinlager zur drehbaren Abstützung einer Federauflage in Federbeinen, die Fahrzeug rädern zugeordnet sind, umfassend ein Axialwälzlager mit zwei Laufscheiben, zwischen denen auf zugehö- rigen Laufbahnen Wälzkörper abrollen, wobei eine Laufscheibe von einemThe invention relates to a suspension strut bearing for rotatably supporting a spring support in suspension struts which are associated with vehicle wheels, comprising an axial rolling bearing with two running disks, between which rolling bodies roll on associated raceways, wherein a running disk of a
Gehäuseoberteil und eine Laufscheibe von einem Gehäuseunterteil aufgenommen ist.Housing upper part and a running disk is accommodated by a lower housing part.
Hintergrund der ErfindungBackground of the invention
Federbeinlager bekannter Bauarten dienen dazu, die an der Radaufhängung eines Kraftfahrzeuges entstehenden Schwingungen von der Karosserie fernzuhalten. Die mit dem Federbeinlager verbundenen, oberen Enden der Federbeine sind dabei zumeinst in einer Dämpfungsfeder aufgenommen, die sich am unteren Außenumfang des Federbeinlagers abstützt. Bekannt ist diese Radaufhängungsart als Mc Pherson-Prinzip. In der DE 295 06 796 U1 ist die Abstützung des Fahrzeuggewichts über ein Federbeinlager und zugehörigem Federbeinrohr auf ein Fahrzeugrad zeichnerisch dargestellt und beschrieben.Strut bearings of known types serve to keep the resulting from the suspension of a motor vehicle vibrations from the body. The associated with the suspension strut bearing, upper ends of the struts are at one time received in a damping spring, which is supported on the lower outer circumference of the suspension strut bearing. This suspension is known as the Mc Pherson principle. In DE 295 06 796 U1 the support of the vehicle weight on a strut bearing and associated strut tube to a vehicle is shown and described in detail.
Ein weiteres derart gattungsgemäß ausgebildetes Federbeinlager ist aus der DE 26 38 748 C2 vorbekannt. Es besteht aus einem zwei Laufscheiben aufweisenden Axialkugellager, die jeweils von einem Oberteil und von einem Unterteil aus einem Kunststoff aufgenommen sind. Das Unterteil und das Oberteil sind durch Verschnappung formschlüssig mit einander verbunden, so dass eine unverlierbare Lagerbaueinheit gebildet ist. In diesem Zusammenhang ist dem Fachmann auch bekannt, dass neben Axialschwingungen, die durch zusätzliche Gummielemente gedämpft werden, auch Drehschwingungen auftreten, die durch ein erhöhtes Reibmoment des Federbeinlagers gedämpft werden können. In diesem Fall ist es üblich, derartige Drehschwingungen durch eine Erhöhung des Reibmomentes des Federbeinlagers über eine schleifende Dichtung zu dämpfen. Aufgrund der Lagerbelastungen und der daraus resultierenden Lagerverformungen unterliegt diese Lösung großer Reibmomentschwankungen. Außerdem ist das Reibmoment verschleißabhängig und ändert sich deutlich während der Le- bensdauer.Another such generic trained strut bearing is previously known from DE 26 38 748 C2. It consists of a two-disk thrust ball bearing, which are each received by a top and a lower part of a plastic. The lower part and the upper part are connected by snap-fit with each other, so that a captive bearing assembly is formed. In this context, the expert is also known that in addition to axial vibrations that are damped by additional rubber elements, and torsional vibrations occur, which can be attenuated by an increased friction torque of the suspension strut bearing. In this case, it is customary to dampen such torsional vibrations by increasing the frictional torque of the suspension strut bearing via a sliding seal. Due to the bearing loads and the resulting bearing deformations, this solution is subject to large Reibmomentschwankungen. In addition, the friction torque is dependent on the wear and changes significantly during the service life.
Zusammenfassung der ErfindungSummary of the invention
Der Erfindung liegt daher die Aufgabe zugrunde, auftretende Drehschwingungen in einem Federbeinlager auf bisher nicht bekannte Art und Weise über die Erhöhung des Reibmomentes zu realisieren.The invention is therefore based on the object to realize occurring torsional vibrations in a strut bearing in a previously unknown manner on the increase of the friction torque.
Erfindungsgemäß wird diese Aufgabe nach dem kennzeichnenden Teil von Anspruch 1 in Verbindung mit dessen Oberbegriff dadurch gelöst, dass die Wälzkörper in Taschen eines Käfigs angeordnet sind, der mit Mittel zur Erhöhung des Lagerreibmomentes versehen ist.According to the invention, this object is achieved according to the characterizing part of claim 1 in conjunction with the preamble thereof in that the rolling elements are arranged in pockets of a cage, which is provided with means for increasing the Lagerreibmomentes.
Diese Erhöhung des Reibmomentes über den Lagerkäfig, das somit deutlich über dem eigentlichen Grundreibmoment liegt, ist mit mehreren Vorteilen verbunden. Erstens ist ein Lagerkäfig in den meisten Fällen immanenter Bestandteil fast jeden Lagertyps und sorgt dafür, dass ein besonders ruhiger Lauf der Lageranordnung gewährleistet ist. Zweitens lässt sich das Federbeinlager auch einfacher montieren, da die Handhabung eines Wälzkörper- kranzes wesentlich einfach als die Handhabung einer Vielzahl von einzelnen Wälzkörpern ist. Drittens braucht durch die Verbindung von Lagerkäfig und Erhöhung des Reibmomentes kein zusätzliches Bauteil gefertigt und ge- handhabt werden. Und viertens schließlich behält ein erfindungsgemäß ausgebildeter Lagerkäfig über seine gesamte Lebensdauer ein nahezu konstantes Reibmoment, ist also verschleißunabhängig.This increase in the frictional torque over the bearing cage, which is thus significantly above the actual Grundreibmoment is associated with several advantages. First, a bearing cage is in most cases an inherent part of almost every type of bearing and ensures that a particularly smooth running of the bearing assembly is ensured. Second, the strut bearing can also be installed more easily since the handling of a Wälzkörper- wreath is much easier than the handling of a plurality of individual rolling elements. Thirdly, the connection of the bearing cage and the increase in the frictional torque do not require any additional component to be manufactured and be handled. And fourthly, finally, a bearing cage formed according to the invention retains an almost constant frictional torque over its entire service life, ie it is independent of wear.
Weitere vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen beschrieben.Further advantageous embodiments of the invention are described in the subclaims.
So ist nach Anspruch 2 vorgesehen, dass der Käfig in axialer Richtung schleifend unter Vorspannung an jeder der beiden Laufscheiben anliegt. Wie diese schleifende Anlage erfolgt, ist im Prinzip von untergeordneter Bedeutung. In den nachstehenden Ansprüchen 3 bis 6 sind dabei verschiedene Möglichkeiten aufgeführt, die gleichberechtigt nebeneinander stehen und nur eine Auswahl von vielen Möglichkeiten beschreiben.Thus, it is provided according to claim 2, that the cage bears in the axial direction rubbing under bias on each of the two discs. How this grinding attachment takes place is, in principle, of secondary importance. In the following claims 3 to 6 different possibilities are listed that stand side by side with equal rights and describe only a selection of many possibilities.
So geht aus Anspruch 3 hervor, dass der Käfig als eine Wellfeder ausgebildet ist, wobei jeweils Wellenberge an der einen Scheibe und Wellentäler an der zugehörigen anderen Laufscheibe anliegen.Thus, it is apparent from claim 3, that the cage is formed as a corrugated spring, wherein in each case wave crests against the one disc and troughs on the associated other running disk.
Anspruch 4 sieht vor, dass der Käfig in Umfangsrichtung gleichmäßig von- einander beabstandete Reibnocken aufweist, die sowohl in axialer Richtung an der Oberseite als auch an der Unterseite angeordnet sind.Claim 4 provides that the cage in the circumferential direction uniformly spaced friction cams, which are arranged both in the axial direction at the top and at the bottom.
Nach einem weiteren Merkmal der Erfindung gemäß Anspruch 5 sollen die Reibnocken in axialer Richtung an der Oberseite und an der Unterseite so angeordnet sein, dass je ein Reibnocken an der Oberseite zwischen zwei Reibnocken an der Unterseite und umgekehrt angeordnet ist.According to a further feature of the invention according to claim 5, the friction cams are to be arranged in the axial direction at the top and at the bottom so that each a friction cam on top between two friction cams on the bottom and vice versa is arranged.
Nach einem weiteren zusätzlichen Merkmal nach Anspruch 6 sollen die Reibnocken zwischen den Taschen eines Käfigs angeordnet sein und aus zwei in radialer Richtung durch einen Freiraum beabstandeten kreisbogenförmig ausgestalteten Segmenten bestehen. Nach einem weiteren Merkmal der Erfindung gemäß Anspruch 7 soll der Käfig aus einem gummielastischen Material oder aus einem elastischen Kunststoff gefertigt sein. Diese elastische Ausbildung sorgt insbesondere dafür, dass das Reibmoment während der gesamten Laufzeit nahezu konstant bleibt.According to a further additional feature according to claim 6, the friction cams are to be arranged between the pockets of a cage and consist of two spaced apart in the radial direction by a space circular arc-shaped segments. According to a further feature of the invention according to claim 7, the cage should be made of a rubber-elastic material or of an elastic plastic. This elastic training ensures in particular that the friction torque remains almost constant throughout the term.
Schließlich ist nach einem letzten Merkmal der Erfindung gemäß Anspruch 8 vorgesehen, dass Gehäuseoberteil und Gehäuseunterteil aus einem Kunststoff bestehen und durch Verschnappung formschlüssig miteinander ver- bunden sind. Auf diese Weise ist eine unverlierbare zusammenhängende Federbeinlagerbaueinheit gebildet, die sich in einfacher Weise handhaben lässt.Finally, it is provided according to a last feature of the invention according to claim 8, that the upper housing part and lower housing part are made of a plastic and are positively connected by snap-together. In this way, a captive contiguous strut bearing assembly is formed, which can be handled in a simple manner.
Weitere Merkmale der Erfindung ergeben sich aus der nachfolgenden Be- Schreibung und aus den Zeichnungen, in denen Ausführungsbeispiele der Erfindung vereinfacht dargestellt sind.Further features of the invention will become apparent from the following description and from the drawings in which embodiments of the invention are shown in simplified form.
Kurze Beschreibung der ZeichnungenBrief description of the drawings
Es zeigen:Show it:
Figur 1 einen teilweisen Längsschnitt durch ein Federbeinlager,1 shows a partial longitudinal section through a suspension strut bearing,
Figur 2 eine Seitenansicht auf einen erfindungsgemäß ausgebilde- ten Käfig für ein Federbeinlager,FIG. 2 shows a side view of a cage designed according to the invention for a suspension strut bearing,
Figur 3 eine Draufsicht auf einen weiteren erfindungsgemäß ausgebildeten Lagerkäfig,FIG. 3 shows a plan view of a further bearing cage according to the invention,
Figur 4 einen Schnitt entlang der Linie IV - IV in Figur 3 undFigure 4 is a section along the line IV - IV in Figure 3 and
Figur 5 eine vergrößerte Darstellung einer Einzelheit aus Figur 4. Ausführliche Beschreibung der ZeichnungenFIG. 5 shows an enlarged view of a detail from FIG. 4. Detailed description of the drawings
Zur Darstellung des Gesamtzusammenhanges wird zunächst auf Figur 1 eingegangen. Diese Figur zeigt den prinzipiellen Aufbau eines Federbeinlagers 1 , umfassend ein Gehäuseoberteil 2 sowie ein Gehäuseunterteil 3, zwischen denen ein Axialwälzlager 7 angeordnet ist. Im eingebauten Zustand stützt sich das Federbeinlager 1 über das Gehäuseoberteil 2 zumindest mittelbar an einer nicht dargestellten Fahrzeugkarosserie ab. Am Gehäuseun- terteil 3, ausgebildet als eine Federauflage, ist in nicht dargestellter Weise eine Schraubenfeder des Federbeins zentriert. Dass Axialwälzlager 7 um- fasst eine obere und eine unterer Laufscheibe 8, 9, die den GehäuseoberteilTo illustrate the overall context, reference is first made to FIG. This figure shows the basic structure of a suspension strut bearing 1, comprising an upper housing part 2 and a lower housing part 3, between which an axial rolling bearing 7 is arranged. When installed, the suspension strut bearing 1 is supported via the housing upper part 2 at least indirectly on a vehicle body, not shown. On the lower housing part 3, designed as a spring support, a helical spring of the strut is centered in a manner not shown. The axial rolling bearing 7 comprises an upper and a lower running disk 8, 9, which cover the upper part of the housing
2 und dem Gehäuseunterteil 3 zugeordnet sind. Zwischen beiden Laufscheiben 8, 9 wälzen in einem Käfig 10 geführte Lagerkugeln 11 ab, wobei das gesamte Axialwälzlager 7 in einem Freiraum 6 untergebracht ist, der von den beiden Gehäuseteilen 2, 3 gebildet ist. Das Gehäuseunterteil 3 ist mit einer Haltenase 4 versehen, die hinter einem Vorsprung 5 des Gehäuseoberteils 2 verschnappt ist. Auf diese Weise ist eine unverlierbare, aus den Bauteilen 2,2 and the lower housing part 3 are assigned. Between two pulleys 8, 9 roll 10 guided bearing balls 11 in a cage, the entire Axialwälzlager 7 is housed in a free space 6, which is formed by the two housing parts 2, 3. The lower housing part 3 is provided with a retaining lug 4, which is snapped behind a projection 5 of the upper housing part 2. In this way, a captive, from the components 2,
3 und 7 bestehende Federbeilagerbaueinheit 1 gebildet.3 and 7 existing Federbeilagerbaueinheit 1 formed.
Wie die schematische Seitenansicht auf den erfindungsgemäß ausgebildeten Käfig 12 in Figur 2 erkennen lässt, ist dieser mit einer Vielzahl von Wellenbergen 13, 14 versehen, die sich einerseits in Richtung der Laufscheibe 8 und andererseits in Richtung der Laufscheibe 9 erstrecken. Zwischen den Wellenbergen 13, 14 sind jeweils nicht bezeichnete Wellentäler vorhanden, von denen Reibnocken 15, 16 ausgehen, die den schleifenden Kontakt mit der oberen Laufscheibe 8 und mit der unteren Laufscheibe 9 herstellen. Vorteilhaft für eine hohe Lebensdauer des erfindungsgemäß als Wellfeder ausgebildeten Käfigs 12 ist eine Wellenform mit möglichst gleichmäßigen Verlauf der Wellenberge 13, 14 wobei die Federwirkung mit einer sich verkleinernden Wellenlänge erhöhen dürfte. Der in den Figuren 3, 4 und 5 um seine Achse 17 drehbare Käfig 18 zeichnet sich dadurch aus, dass jeweils auf einer Seite zwischen zwei benachbarten Taschen 19 Reibnocken 20, 21 angeordnet sind, die aus Segmenten bestehen, welche durch den Freiraum 22 voneinander beabstandet sind. Dabei ist der Käfig 18 so gestaltet, dass ein Reibnocken 20 auf der Oberseite zwischen zwei Reibnocken 21 auf der Unterseite angeformt ist. As can be seen from the schematic side view of the inventively designed cage 12 in Figure 2, this is provided with a plurality of wave crests 13, 14 which extend on the one hand in the direction of the rotor disk 8 and on the other hand in the direction of the running disk 9. Between the wave crests 13, 14 each unmarked wave troughs are present from which friction cams 15, 16 go out, which produce the sliding contact with the upper rotor disk 8 and the lower rotor disk 9. Advantageous for a long service life of the cage 12 designed according to the invention as a corrugated spring is a waveform with a curve of the wave crests 13, 14 which is as uniform as possible, whereby the spring action should increase with a decreasing wavelength. The cage 18, which is rotatable about its axis 17 in FIGS. 3, 4 and 5, is characterized in that friction cams 20, 21 are arranged on each side between two adjacent pockets 19 which consist of segments which are spaced apart from one another by the clearance 22 are. In this case, the cage 18 is designed so that a Reibnocken 20 is formed on the upper side between two Reibnocken 21 on the underside.
Bezugszeichenreference numeral
1 Federbeinlager1 suspension strut bearing
2 Gehäuseoberteil2 housing top
3 Gehäuseunterteil3 housing base
4 Haltenase4 holding nose
5 Vorsprung5 lead
6 Freiraum6 free space
7 Axialwälzlager7 axial rolling bearings
8 obere Laufscheibe8 upper running disk
9 untere Laufscheibe9 lower running disk
10 Lagerkäfig10 storage cage
11 Lagerkugel11 bearing ball
12 Lagerkäfig12 storage cage
13 Wellenberg13 wave mountain
14 Wellenberg14 wave mountain
15 Reibnocken15 friction cams
16 Reibnocken16 friction cams
17 Lagerachse17 bearing axis
18 Lagerkäfig18 storage cage
19 Tasche19 bag
20 Reibnocken20 friction cams
21 Reibnocken21 friction cams
22 Freiraum 22 free space

Claims

Patentansprüche claims
1. Federbeinlager (1) zur drehbaren Abstützung einer Federauflage in Federbeinen, die Fahrzeugrädern zugeordnet sind, umfassend ein Axial- Wälzlager (7) mit zwei Laufscheiben (8, 9), zwischen denen auf zugehörigen Laufbahnen Wälzkörper (11 ) abrollen, wobei eine Laufscheibe (8) von einem Gehäuseoberteil (2) und eine Laufscheibe (9) von einem Gehäuseunterteil (3) aufgenommen sind, dadurch gekennzeichnet, dass die Wälzkörper (10) in Taschen (19) eines Käfigs (12, 18) angeordnet sind, der mit Mitteln zur Erhöhung des Lagerreibmomentes versehen ist.1. suspension strut bearing (1) for rotatably supporting a spring support in suspension struts, which are assigned to vehicle wheels, comprising an axial rolling bearing (7) with two running wheels (8, 9), between which roll on corresponding raceways rolling elements (11), wherein a running disk (8) of a housing upper part (2) and a running disk (9) of a housing lower part (3) are accommodated, characterized in that the rolling bodies (10) in pockets (19) of a cage (12, 18) are arranged with Provided means for increasing the Lagerreibmomentes.
2. Federbeinlager (1 ) nach Anspruch 1 , dadurch gekennzeichnet, dass der Käfig (12, 18) in axialer Richtung schleifend unter Vorspannung an jeder der beiden Laufscheiben (8, 9) anliegt.2. suspension strut bearing (1) according to claim 1, characterized in that the cage (12, 18) in the axial direction rubbing biased against each of the two pulleys (8, 9).
3. Federbeinlager (1 ) nach Anspruch 2, dadurch gekennzeichnet, dass Käfig (12) als eine Wellfeder ausgebildet ist, wobei jeweils Wellenberge (13, 14) an der einen Laufscheibe und an der zugehörigen anderen Laufscheibe (8, 9) anliegen.3. suspension strut bearing (1) according to claim 2, characterized in that the cage (12) is designed as a corrugated spring, wherein each wave crests (13, 14) on one of the running disk and on the associated other running disk (8, 9) rest.
4. Federbeinlager (1) nach Anspruch 2, dadurch gekennzeichnet, dass der Käfig (12) in Umfangsrichtung gleichmäßig voneinander beabstande- te Reibnocken (15, 16) aufweist, die in axialer Richtung sowohl an der einen Laufscheibe (8) als auch an der zugehörigen anderen Laufscheibe (9) anliegen.4. suspension strut bearing (1) according to claim 2, characterized in that the cage (12) in the circumferential direction evenly spaced te friction cams (15, 16) which in the axial direction both on the one running disk (8) and on the abut the corresponding other running disk (9).
5. Federbeinlager (1 ) nach Anspruch 4, dadurch gekennzeichnet, dass die Reibnocken (15, 16) in axialer Richtung beidseitig so angeordnet sind, dass je ein Reibnocken (15) an einer Seite zwischen zwei Reibno- cken (16) an der anderen Seite und umgekehrt angeordnet ist. 5. suspension strut bearing (1) according to claim 4, characterized in that the friction cams (15, 16) in the axial direction on both sides are arranged so that each one Reibnocken (15) on one side between two Reibno- cken (16) on the other Side and vice versa.
6. Federbeinlager (1 ) nach Anspruch 4, dadurch gekennzeichnet, dass die Reibnocken (20, 21 ) zwischen den Taschen (19) des Käfigs (18) angeordnet sind und aus zwei in radialer Richtung durch einen Freiraum (22) beabstandeten Segmenten bestehen.6. suspension strut bearing (1) according to claim 4, characterized in that the friction cams (20, 21) between the pockets (19) of the cage (18) are arranged and consist of two in the radial direction by a clearance (22) spaced segments.
7. Federbeinlager (1 ) nach Anspruch 1 , dadurch gekennzeichnet, dass der Käfig (12, 18) aus einem gummielastischen Material oder aus einem elastischen Kunststoff gefertigt ist.7. suspension strut bearing (1) according to claim 1, characterized in that the cage (12, 18) is made of a rubber-elastic material or of an elastic plastic.
8. Federbeinlager (1 ) nach Anspruch 1 , dadurch gekennzeichnet, dass das Gehäuseoberteil (2) und das Gehäuseunterteil (3) aus einem Kunststoff bestehen und durch Verschnappung formschlüssig miteinander verbunden sind. 8. Suspension strut bearing (1) according to claim 1, characterized in that the upper housing part (2) and the lower housing part (3) consist of a plastic and are positively connected to each other by snapping.
PCT/EP2006/008009 2005-08-23 2006-08-12 Strut bearing WO2007022893A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200510039736 DE102005039736A1 (en) 2005-08-23 2005-08-23 Strut mounts
DE102005039736.0 2005-08-23

Publications (1)

Publication Number Publication Date
WO2007022893A1 true WO2007022893A1 (en) 2007-03-01

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WO (1) WO2007022893A1 (en)

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US20120141061A1 (en) * 2009-06-12 2012-06-07 Bruno Montboeuf suspension stop and a motor vehicle fitted with such a stop

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