WO2009012768A1 - Articulation and articulated shaft comprising the same - Google Patents

Articulation and articulated shaft comprising the same Download PDF

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Publication number
WO2009012768A1
WO2009012768A1 PCT/DE2008/001208 DE2008001208W WO2009012768A1 WO 2009012768 A1 WO2009012768 A1 WO 2009012768A1 DE 2008001208 W DE2008001208 W DE 2008001208W WO 2009012768 A1 WO2009012768 A1 WO 2009012768A1
Authority
WO
WIPO (PCT)
Prior art keywords
additional weight
joint
shaft
hub
connection portion
Prior art date
Application number
PCT/DE2008/001208
Other languages
German (de)
French (fr)
Inventor
Claus Disser
Original Assignee
Shaft-Form-Engineering Gmbh
Bharat Forge Beteilungs Gmbh
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 Shaft-Form-Engineering Gmbh, Bharat Forge Beteilungs Gmbh filed Critical Shaft-Form-Engineering Gmbh
Priority to DE112008002695T priority Critical patent/DE112008002695A5/en
Publication of WO2009012768A1 publication Critical patent/WO2009012768A1/en

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/16Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
    • F16D3/20Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members
    • F16D3/22Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts
    • F16D3/223Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts
    • F16D3/224Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts the groove centre-lines in each coupling part lying on a sphere
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/16Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
    • F16D3/20Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members
    • F16D3/22Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts
    • F16D3/223Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts
    • F16D3/2237Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts where the grooves are composed of radii and adjoining straight lines, i.e. undercut free [UF] type joints
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/32Correcting- or balancing-weights or equivalent means for balancing rotating bodies, e.g. vehicle wheels
    • F16F15/322Correcting- or balancing-weights or equivalent means for balancing rotating bodies, e.g. vehicle wheels the rotating body being a shaft
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/16Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
    • F16D3/20Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members
    • F16D3/22Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts
    • F16D3/223Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts
    • F16D2003/22306Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts having counter tracks, i.e. ball track surfaces which diverge in opposite directions
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/16Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
    • F16D3/20Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members
    • F16D3/22Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts
    • F16D3/223Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts
    • F16D2003/22326Attachments to the outer joint member, i.e. attachments to the exterior of the outer joint member or to the shaft of the outer joint member

Definitions

  • the invention relates to a joint, in particular a constant velocity fixed joint for a propeller shaft of a motor vehicle, with an inner hub, on the outer surface of outer raceways are provided with an inner hub at least partially embracing outer hub, on the inner surface of inner raceways are provided, and an at least approximately cylindrical and possibly . Having closed by a cover connection portion, and arranged with mutually associated raceway pairs balls for transmitting a torque between the outer hub and the inner hub. Furthermore, the invention relates to a propeller shaft with at least one such joint.
  • balancing weights are arranged on the outer surface. These often consist of thin sheet metal strips which are welded onto the outer surface of the propeller shafts or joints in order to achieve the most rotationally symmetrical weight distribution possible in the components of a propeller shaft rotating during operation, and thus to avoid unbalance vibrations.
  • these balancing weights have only a very small mass, so that they have no appreciable influence on the favored by the lightweight construction vibration behavior.
  • absorber weights are provided. With these balancing or absorber weights mounted externally on the components of a propeller shaft, it is considered to be disadvantageous that contaminants can become trapped therein during operation, for example when the cardan shaft comes into contact with plants, the soil or the like.
  • the object of the present invention is to provide a joint and a propeller shaft of the type mentioned at the outset, which have an improved vibration behavior.
  • an additional weight is arranged in the connection section.
  • a defined increase in the mass of the joint achieved by this absorber or additional weight has proven to be particularly advantageous in order to avoid the vibrations occurring in some types of vehicles during operation.
  • the additional weight By arranging the additional weight in the joint itself, ie close to the connection point of a propeller shaft, the risk is minimized that are caused by the additional weight imbalances.
  • Another advantage of the inventive arrangement of an additional weight in the connection portion of a joint is that the additional weight from the outside is not visible and also comes with no other components of the vehicle or the ground in touch. It is therefore not increased by the additional weight of the required space for the joint. There is also no danger that contaminants may catch on the additional weight. Further the additional weight is taken captively in the joint by the arrangement within the Anitatisabschnit- so that there is no risk that this is lost, which may be the case in balancing weights partially.
  • a cover is arranged in the connection section, in and / or on which the additional weight is provided.
  • a lid closes the joint to prevent ingress of contaminants and leakage of lubricant.
  • the additional weight is fixed in the connection section. This is preferably carried out in that the additional weight is jammed and / or latched in the connection section and / or in the cover. So it is conceivable, for example, insert the additional weight in the connection section and the lid and embossing. For this purpose, projections or recesses may be provided at the connection portion, the lid and / or the additional weight, which facilitate jamming or embossing. Alternatively or additionally, it is also possible to weld and / or glue the additional weight in the connection section and / or in the cover.
  • the additional weight consists of a material which has a higher specific gravity than the other components of the joint.
  • the additional weight may consist of lead, while the other components of the joint consist essentially of sheet steel or plastic. Since there are no special mechanical requirements for the additional weight, this can be made of a comparatively inexpensive material.
  • the additional weight is at least approximately rotationally symmetrical and is arranged substantially centered in the outer hub of the joint.
  • the additional weight for example, substantially have the contour of a hemisphere or be formed as an optionally stepped cylinder whose one end is hemispherical rounded.
  • a propeller shaft having at least one joint of the type mentioned above.
  • a propeller shaft preferably has at least one tubular shaft section, which is connected to the connection section of a joint, for example by welding.
  • the propeller shaft When the propeller shaft is used as a side shaft, this often includes two joints of the above type, a tubular shaft portion and possibly a rolling displacement unit, which allows axial adjustability.
  • the PTO shaft When the PTO shaft is used as a longitudinal shaft in the drive train of a vehicle, this often has two rotatably connected via a trained as constant velocity joint center joint shafts connected to each other, each of the center joint opposite end of each shaft portion a constant velocity fixed joint is arranged. At least one of the joint ke, preferably one of the two outer joints, equipped with an additional weight.
  • a propeller shaft used as a longitudinal shaft preferably has at least one, in particular close to the center joint arranged Rollverschiebetician for axial adjustability of the propeller shaft. In principle, however, it is also possible to use at least one sliding joint in the propeller shaft instead of the combination of a fixed joint with a rolling displacement unit.
  • the additional weight may extend in regions in the tubular shaft portion which is connected to the joint. This makes it possible, despite the small space within the joint itself provide an additional weight with large mass.
  • the additional weight may be designed such that the outer contour of the additional weight is substantially adapted to the inner contour of the connection portion and possibly the cover of the joint, while a extending in the tubular shaft portion of the additional weight may have a smaller diameter, so as to a form annular clearance between the inner contour of the tubular shaft portion and the outer contour of the additional weight.
  • connection portion and / or their connection area ie, for example, a weld
  • a substantially radially inwardly protruding projection is provided which limits a movement of the additional weight in an axial direction.
  • This protrusion can be formed, for example, by an inwardly protruding bead of the weld seam, which connects the connection section of the joint to the tubular waveguide section.
  • the additional weight in the connection portion and / or the tubular shaft portion is fixed in a fixed position both in the axial direction and in the direction of rotation.
  • the additional weight can then perform no relative movement to the components of the propeller shaft or the joint, which could possibly be detrimental during operation.
  • connection section and / or at least part of the tubular shaft section is foamed, for example with mounting foam.
  • the mounting foam can also be used to attach the additional weight.
  • FIG. 1 shows a longitudinal section through a joint according to a first embodiment of the invention
  • Fig. 2 is a longitudinal section through a detail of a joint according to a second embodiment of the invention.
  • Fig. 3 is a section through the joint of FIG. 2 along the line IH-III.
  • a constant velocity fixed joint 1 is shown, the outer hub 2, inter alia, a partially cylindrical connection portion 3 has.
  • the joint 1 is connected in the embodiment of Fig. 1 with a shaft journal 4, which may form the output or input shaft of a transmission or a differential.
  • the joint 1 is part of a propeller shaft 5, which is indicated in Fig. 1 by a substantially tubular shaft portion 10 which is connected to the connecting portion 3 of the joint 1.
  • the outer hub 2 of the joint 1 in addition to the partially cylindrical connection portion 3 on a non-rotatably embraced another outer hub member 6, in which a plurality formed as counter paths grooves are formed.
  • the joint 1 further has an inner hub 7, which is also provided with counter-tracks formed grooves.
  • each balls 8 are added, which are guided in a cage 9. As a result, a torque can be transmitted from the inner hub 7 to the outer hub 2 and the hollow shaft 10 connected thereto.
  • the inner hub 7 in the embodiment of FIG. 1 has a substantially tubular shape with a central opening.
  • the inner surface of this opening of the inner hub 7 and the outer surface of the shaft journal 4 are provided with a corresponding spline 11.
  • the shaft journal 4 can thus be inserted non-rotatably into the opening of the inner hub 7 and can be axially fixed there, as will be explained below.
  • Shaft journal 4 are mutually associated grooves 12 and 13, respectively. Further, the opening of the inner hub 7 is provided with an insertion bevel 14, the the insertion of the shaft journal 4 in the opening of the inner hub 7 facilitates.
  • a retaining ring 15 is used, which preferably has a substantially rectangular cross-section with at least one slope. In its unloaded state, the securing ring 15 protrudes out of the groove 13 at least in sections.
  • the securing ring 15 also snaps into the groove 12 of the inner hub 7 as a result of its pretension due to radial expansion. This causes the axial connection between the inner hub 7 and the shaft journal. 4
  • 16 may be provided on the shaft journal 4, an additional groove for receiving a sealing ring.
  • a mounting groove may be formed, which allows the tool, not shown, for pushing together the inner hub 7 and the shaft journal 4.
  • a likewise not shown tool in a disassembly gap between the end face of the inner hub 7 and the diameter of the shaft journal 4 having paragraph are introduced, so that the inner hub 7 from the shaft journal 4 leaves.
  • the securing ring 15 is provided with a bevel which comes into contact with an edge of the groove 12 of the inner hub 7 so that the securing ring 15 can be pushed back radially into the groove 13 during disassembly.
  • an additional weight 17 is arranged in the connection section 3 of the outer hub 2. This essentially has one cylindrical shape, wherein the shaft journal 4 facing side is provided with an approximately hemispherical projection.
  • the additional weight 17 is substantially flush with its outer surface on the inner surface of the connecting portion 3 and nestles on its side facing the shaft journal 4 in a lid 18 which closes the hinge 1 with respect to the tubular shaft portion 10 of the propeller shaft.
  • the additional weight 17 is at least substantially rotationally symmetrical and is centered in the connection portion 3 and the lid 18 fitted. In the axial direction, the additional weight 17 is held on the one hand by the cover 18 and on the other hand by a weld 19 between the connecting portion 3 and the tubular shaft portion 10. The weld 19 forms a radially inwardly projecting bead, which fixes the additional weight 17.
  • the additional weight 17 is in the illustrated embodiment of a relatively heavy metal, such as lead.
  • the other components of the joint 1 have a lower specific gravity than the additional weight 17.
  • FIGS. 2 and 3 show a further embodiment of a propeller shaft 5 according to the invention. Similar to the embodiment of FIG. 1, the propeller shaft 5 at least one tubular shaft portion 10 and at least one hinge 1, of which only the connection portion 3 of the outer hub 2 is shown.
  • connection section 3 a Tilger- or additional weight 17 ' is arranged, which extends in certain areas into the tubular shaft portion 10 hineinerstreckt.
  • the additional weight 17 ' In the area in which the weld 19 is provided for connecting the attachment portion 3 with the tubular shaft portion 10 is, the additional weight 17 'has a reduced outer diameter, so that between the inner wall of the tubular shaft portion 10 and the outer wall of the additional weight 17', an annular space is formed.
  • the additional weight 17 is fixed by an embossment in the connecting section 3.
  • the connecting section 3 of the joint 1 is locally pressurized from the outside, so that the connecting section 3 curves in regions radially inwards and forms projections 20. These engage in corresponding recesses on the additional weight 17 'The pressurization can also take place in such a way that the depressions in the additional weight 17' are only generated by the penetration of the projections 20.
  • the additional weight 17' is also fixed with a mounting foam 21 within the connection section 3 or the tubular shaft section 10.
  • a mounting foam 21 within the connection section 3 or the tubular shaft section 10.
  • a damping element is provided in the tube of the propeller shaft. This brings with it, among other things, a difficult assembly.
  • the absorber mass is brought as close as possible to the transmission / rear axle transmission, the absorber and joint form a fully assembled unit which can be delivered completely to the assembly line. This eliminates assembly steps and the possibility that the absorber can migrate in the pipe.
  • the absorber by its arrangement also fulfills the task of sealing the tube and / or the bending angle limit in the joint.

Abstract

The invention relates to an articulation (1) comprising an inner hub, an outer hub surrounding the same, and spheres (8) for transmitting torque between the inner hub and the outer hub. The invention further relates to an articulated shaft (5) comprising such an articulation (1).

Description

Gelenk und Gelenkwelle hiermit Joint and drive shaft hereby
Die Erfindung betrifft ein Gelenk, insbesondere ein Gleichlauffestgelenk für eine Gelenkwelle eines Kraftfahrzeuges, mit einer Innennabe, auf deren Außenfläche Außenlaufbahnen vorgesehen sind, mit einer die Innennabe zumindest bereichsweise umgreifenden Außennabe, auf deren Innenfläche Innenlaufbahnen vorgesehen sind, und die einen zumindest näherungsweise zylindrischen und ggf. durch einen Deckel verschlossenen Anbindungsabschnitt aufweist, und mit in einander zugeordneten Laufbahnpaaren angeordneten Kugeln zur Übertragung eines Drehmoments zwischen der Außennabe und der Innennabe. Weiter betrifft die Erfindung eine Gelenkwelle mit wenigstens einem derartigen Gelenk.The invention relates to a joint, in particular a constant velocity fixed joint for a propeller shaft of a motor vehicle, with an inner hub, on the outer surface of outer raceways are provided with an inner hub at least partially embracing outer hub, on the inner surface of inner raceways are provided, and an at least approximately cylindrical and possibly . Having closed by a cover connection portion, and arranged with mutually associated raceway pairs balls for transmitting a torque between the outer hub and the inner hub. Furthermore, the invention relates to a propeller shaft with at least one such joint.
Moderne Gelenkwellen sowie die darin eingesetzten Gelenke werde unter ande- rem in Hinblick auf eine Gewichtsreduzierung optimiert. Diese Gelenke und Gelenkwellen in Leichtbauweise neigen jedoch in Abhängigkeit des Fahrzeugs, in welchem sie eingesetzt werden, teilweise dazu, dass bei hohen Drehzahlen als störend empfundene Vibrationen auftreten können.Modern cardan shafts and the joints used therein are being optimized, inter alia, with regard to weight reduction. However, depending on the vehicle in which they are used, these hinges and cardan shafts in lightweight construction sometimes have the tendency that vibrations that are perceived as disturbing at high speeds may occur.
Zum Auswuchten einer Gelenkwelle werden auf deren Außenfläche meist zusätzliche Wuchtgewichte angeordnet. Diese bestehen häufig aus dünnen Blechstreifen, die auf die Außenfläche der Gelenkwellen oder Gelenke aufgeschweißt werden, um eine möglichst rotationssymmetrische Gewichtsverteilung bei den sich im Betrieb drehenden Komponenten einer Gelenkwelle zu erzielen, und damit Unwuchtschwingungen zu vermeiden. Diese Wuchtgewichte weisen jedoch nur eine sehr geringe Masse auf, so dass diese keinen nennenswerten Einfluss auf das durch die Leichtbauweise begünstigte Vibrationsverhalten haben. Zudem werden in einigen Anwendungsfällen auf der Außenfläche zusätzliche, verglichen mit den Wuchtgewichten schwerere, Tilgergewichte vorgesehen. Bei diesen außen an den Komponenten einer Gelenkwelle angebrachten Wuchtoder Tilgergewichten wird es als nachteilig empfunden, dass sich im Betrieb Schmutzstoffe darin verfangen können, beispielsweise wenn die Gelenkwelle in Kontakt mit Pflanzen, dem Erdreich oder dergleichen kommt.For balancing a propeller shaft usually additional balancing weights are arranged on the outer surface. These often consist of thin sheet metal strips which are welded onto the outer surface of the propeller shafts or joints in order to achieve the most rotationally symmetrical weight distribution possible in the components of a propeller shaft rotating during operation, and thus to avoid unbalance vibrations. However, these balancing weights have only a very small mass, so that they have no appreciable influence on the favored by the lightweight construction vibration behavior. In addition, in some applications on the outer surface additional, compared to the balancing weights heavier, absorber weights are provided. With these balancing or absorber weights mounted externally on the components of a propeller shaft, it is considered to be disadvantageous that contaminants can become trapped therein during operation, for example when the cardan shaft comes into contact with plants, the soil or the like.
Aufgabe der vorliegenden Erfindung ist es demgegenüber ein Gelenk sowie eine Gelenkwelle der eingangs genannten Art bereitzustellen, die ein verbesser- tes Vibrationsverhalten aufweisen.In contrast, the object of the present invention is to provide a joint and a propeller shaft of the type mentioned at the outset, which have an improved vibration behavior.
Diese Aufgabe wird erfindungsgemäß für ein Gelenk im Wesentlichen dadurch gelöst, dass in dem Anbindungsabschnitt ein Zusatzgewicht angeordnet ist. Unter einem Zusatzgewicht wird erfindungsgemäß ein Bauteil verstanden, welches zusätzlich zu den sonst üblichen Komponenten eines Gelenks bzw. einer Gelenkwelle vorgesehen ist und zumindest hauptsächlich der definierten Steigerung der Masse des Gelenks dient. Eine durch dieses Tilger- oder Zusatzgewicht erreichte definierte Steigerung der Masse des Gelenks hat sich als besonders vorteilhaft erwiesen, um die bei einigen Fahrzeugtypen auftretenden Vibra- tionen im Betrieb zu vermeiden.This object is achieved according to the invention for a joint essentially in that an additional weight is arranged in the connection section. Under an additional weight according to the invention a component understood, which is provided in addition to the usual components of a joint or a propeller shaft and at least mainly serves the defined increase in the mass of the joint. A defined increase in the mass of the joint achieved by this absorber or additional weight has proven to be particularly advantageous in order to avoid the vibrations occurring in some types of vehicles during operation.
Durch die Anordnung des Zusatzgewichtes in dem Gelenk selbst, d.h. nahe an der Anbindungsstelle einer Gelenkwelle, wird die Gefahr minimiert, dass durch das Zusatzgewicht Unwuchten hervorgerufen werden. Ein weiterer Vorteil der erfindungsgemäßen Anordnung eines Zusatzgewichtes in dem Anbindungsabschnitt eines Gelenks liegt darin, dass das Zusatzgewicht von Außen nicht sichtbar ist und auch mit keinen anderen Komponenten des Fahrzeugs oder des Untergrundes in Berührung kommt. Es wird durch das Zusatzgewicht folglich der erforderliche Bauraum für das Gelenk nicht vergrößert. Auch besteht keine Ge- fahr, dass sich Schmutzstoffe an dem Zusatzgewicht verfangen können. Weiter ist das Zusatzgewicht durch die Anordnung innerhalb des Anbindungsabschnit- tes verliersicher in dem Gelenk aufgenommen, so dass nicht die Gefahr besteht, dass dieses verloren geht, was bei Wuchtgewichten teilweise der Fall sein kann.By arranging the additional weight in the joint itself, ie close to the connection point of a propeller shaft, the risk is minimized that are caused by the additional weight imbalances. Another advantage of the inventive arrangement of an additional weight in the connection portion of a joint is that the additional weight from the outside is not visible and also comes with no other components of the vehicle or the ground in touch. It is therefore not increased by the additional weight of the required space for the joint. There is also no danger that contaminants may catch on the additional weight. Further the additional weight is taken captively in the joint by the arrangement within the Anbindungsabschnit- so that there is no risk that this is lost, which may be the case in balancing weights partially.
Nach einer bevorzugten Ausführungsform der Erfindung ist in dem Anbindungs- abschnitt ein Deckel angeordnet, in und/oder an dem das Zusatzgewicht vorgesehen ist. Ein derartiger Deckel verschließt das Gelenk, um ein Eindringen von Schmutzstoffen und ein Austreten von Schmiermittel zu verhindern. Das Vorsehen des Zusatzgewichtes in und/oder an dem Deckel erlaubt eine besonders einfache Montage und Befestigung des Zusatzgewichtes, ohne dabei die Funktionsfähigkeit der Komponenten des Gelenkes zu beeinflussen.According to a preferred embodiment of the invention, a cover is arranged in the connection section, in and / or on which the additional weight is provided. Such a lid closes the joint to prevent ingress of contaminants and leakage of lubricant. The provision of the additional weight in and / or on the cover allows a particularly simple installation and attachment of the additional weight, without affecting the functionality of the components of the joint.
Um ein Verrutschen des Zusatzgewichtes innerhalb des Gelenks bzw. einer mit diesem verbundenen Gelenkwelle zu vermeiden, wird es bevorzugt, wenn das Zusatzgewicht in dem Anbindungsabschnitt fixiert ist. Dies erfolgt vorzugsweise dadurch, dass das Zusatzgewicht in dem Anbindungsabschnitt und/oder in dem Deckel verklemmt und/oder verrastet ist. So ist es beispielsweise vorstellbar, das Zusatzgewicht in den Anbindungsabschnitt und den Deckel einzulegen und zu verprägen. Hierzu können an dem Anbindungsabschnitt, dem Deckel und/oder dem Zusatzgewicht Vorsprünge bzw. Ausnehmungen vorgesehen sein, die ein Verklemmen oder ein Verprägen erleichtern. Alternativ oder zusätzlich hierzu ist es auch möglich, das Zusatzgewicht in dem Anbindungsabschnitt und/oder in dem Deckel zu verschweißen und/oder zu verkleben. So ist es beispielsweise möglich, das Zusatzgewicht innerhalb des Anbindungsabschnittes bzw. innerhalb des Deckels einzuschäumen. Die Befestigung des Zusatzgewichtes mittels Montageschaum hat dabei den zusätzlichen Vorteil, dass der Montageschaum sich ebenfalls positiv auf das Vibrationsverhalten des Gelenks auswirkt. Erfindungsgemäß besteht das Zusatzgewicht aus einem Material, welches ein höheres spezifisches Gewicht als die übrigen Komponenten des Gelenks aufweist. So kann das Zusatzgewicht beispielsweise aus Blei bestehen, während die übrigen Komponenten des Gelenks im Wesentlichen aus Stahlblech oder Kunststoff bestehen. Da für das Zusatzgewicht keine besonderen mechanischen Anforderungen bestehen, kann dieses aus einem vergleichsweise preisgünstigen Material hergestellt sein.In order to prevent slippage of the additional weight within the joint or a drive shaft connected thereto, it is preferred if the additional weight is fixed in the connection section. This is preferably carried out in that the additional weight is jammed and / or latched in the connection section and / or in the cover. So it is conceivable, for example, insert the additional weight in the connection section and the lid and embossing. For this purpose, projections or recesses may be provided at the connection portion, the lid and / or the additional weight, which facilitate jamming or embossing. Alternatively or additionally, it is also possible to weld and / or glue the additional weight in the connection section and / or in the cover. So it is possible, for example, to foam the additional weight within the connection section or within the lid. The attachment of the additional weight using mounting foam has the additional advantage that the mounting foam also has a positive effect on the vibration behavior of the joint. According to the invention, the additional weight consists of a material which has a higher specific gravity than the other components of the joint. For example, the additional weight may consist of lead, while the other components of the joint consist essentially of sheet steel or plastic. Since there are no special mechanical requirements for the additional weight, this can be made of a comparatively inexpensive material.
Um negative Einflüsse des Zusatzgewichtes auf das Vibrationsverhalten des Gelenks bzw. der mit diesem verbundenen Gelenkwelle zu vermeiden, wird es bevorzugt, wenn das Zusatzgewicht zumindest näherungsweise rotationssymmetrisch ist und im Wesentlichen zentriert in der Außennabe des Gelenks angeordnet ist. So kann das Zusatzgewicht beispielsweise im Wesentlichen die Kontur einer Halbkugel haben oder als ein ggf. abgestufter Zylinder ausgebildet sein, dessen eines Stirnende halbkugelartig abgerundet ist.In order to avoid negative influences of the additional weight on the vibration behavior of the joint or the drive shaft connected thereto, it is preferred if the additional weight is at least approximately rotationally symmetrical and is arranged substantially centered in the outer hub of the joint. Thus, the additional weight, for example, substantially have the contour of a hemisphere or be formed as an optionally stepped cylinder whose one end is hemispherical rounded.
Die der Erfindung zugrunde liegende Aufgabe wird weiter mit einer Gelenkwelle gelöst, die wenigstens ein Gelenk der oben genannten Art aufweist. Eine Gelenkwelle weist dabei vorzugsweise wenigstens einen rohrförmigen Wellenab- schnitt auf, der mit dem Anbindungsabschnitt eines Gelenks beispielsweise durch eine Verschweißung verbunden ist.The object underlying the invention is further achieved with a propeller shaft having at least one joint of the type mentioned above. A propeller shaft preferably has at least one tubular shaft section, which is connected to the connection section of a joint, for example by welding.
Wenn die Gelenkwelle als eine Seitenwelle eingesetzt wird, umfasst diese häufig zwei Gelenke der oben genannten Art, einen rohrförmigen Wellenabschnitt sowie ggf. eine Rollverschiebeeinheit, die eine axiale Verstellbarkeit ermöglicht. Wenn die Gelenkwelle als eine Längswelle im Antriebsstrang eines Fahrzeugs eingesetzt wird, weist diese häufig zwei über ein als Gleichlauffestgelenk ausgebildetes Mittengelenk drehfest miteinander verbundene Wellenabschnitte auf, wobei jeweils an dem Mittengelenk abgewandten Ende jedes Wellenabschnitts ein Gleichlauffestgelenk angeordnet ist. Dabei ist wenigstens eines der Gelen- ke, vorzugsweise eines der beiden äußeren Gelenke, mit einem Zusatzgewicht ausgestattet. Auch eine als Längswelle eingesetzte Gelenkwelle weist vorzugsweise wenigstens eine, insbesondere nahe dem Mittengelenk angeordnete Rollverschiebeeinheit zur axialen Verstellbarkeit der Gelenkwelle auf. Grundsätzlich ist es jedoch auch möglich, statt der Kombination eines Festgelenks mit einer Rollverschiebeeinheit wenigstens ein Verschiebegelenk in der Gelenkwelle einzusetzen.When the propeller shaft is used as a side shaft, this often includes two joints of the above type, a tubular shaft portion and possibly a rolling displacement unit, which allows axial adjustability. When the PTO shaft is used as a longitudinal shaft in the drive train of a vehicle, this often has two rotatably connected via a trained as constant velocity joint center joint shafts connected to each other, each of the center joint opposite end of each shaft portion a constant velocity fixed joint is arranged. At least one of the joint ke, preferably one of the two outer joints, equipped with an additional weight. Also, a propeller shaft used as a longitudinal shaft preferably has at least one, in particular close to the center joint arranged Rollverschiebeeinheit for axial adjustability of the propeller shaft. In principle, however, it is also possible to use at least one sliding joint in the propeller shaft instead of the combination of a fixed joint with a rolling displacement unit.
Da der Anbindungsabschnitt eines Gelenks in axialer Richtung häufig kurz gehalten wird, kann sich das Zusatzgewicht nach einer bevorzugten Ausführungsform der Erfindung bereichsweise in den rohrförmigen Wellenabschnitt erstrecken, der mit dem Gelenk verbunden ist. Dies ermöglicht es, trotz des kleinen Bauraums innerhalb des Gelenks selbst ein Zusatzgewicht mit großer Masse vorzusehen. Dabei kann das Zusatzgewicht derart gestaltet sein, dass die Außenkontur des Zusatzgewichtes im Wesentlichen an die Innenkontur des Anbindungsabschnittes und ggf. des Deckels des Gelenks angepasst ist, während ein sich in den rohrförmigen Wellenabschnitt erstreckender Teil des Zusatzgewichtes einen kleineren Durchmesser aufweisen kann, um so einen ringförmigen Freiraum zwischen der Innenkontur des rohrförmigen Wellenabschnitts und der Außenkontur des Zusatzgewichtes auszubilden.Since the attachment portion of a joint in the axial direction is often kept short, the additional weight according to a preferred embodiment of the invention may extend in regions in the tubular shaft portion which is connected to the joint. This makes it possible, despite the small space within the joint itself provide an additional weight with large mass. In this case, the additional weight may be designed such that the outer contour of the additional weight is substantially adapted to the inner contour of the connection portion and possibly the cover of the joint, while a extending in the tubular shaft portion of the additional weight may have a smaller diameter, so as to a form annular clearance between the inner contour of the tubular shaft portion and the outer contour of the additional weight.
Um ein Verrutschen des Zusatzgewichtes innerhalb des Gelenks und/oder der Gelenkwelle in axialer Richtung zu vermeiden, wird es bevorzugt, wenn an dem rohrförmigen Wellenabschnitt, dem Anbindungsabschnitt und/oder deren Ver- bindungsbereich, d.h. beispielsweise eine Schweißnaht, ein im Wesentlichen radial nach innen ragender Vorsprung vorgesehen ist, der eine Bewegung des Zusatzgewichtes in einer axialen Richtung begrenzt. Dieser Vorsprung kann beispielsweise durch einen nach innen ragenden Wulst der Schweißnaht gebildet sein, die den Anbindungsabschnitt des Gelenks mit dem rohrförmigen WeI- lenabschnitt verbindet. Für eine Sicherung des Zusatzgewichtes innerhalb der Gelenkwelle wird es besonders bevorzugt, wenn das Zusatzgewicht in dem Anbindungsabschnitt und/oder dem rohrförmigen Wellenabschnitt sowohl in axialer Richtung als auch in Drehrichtung ortsfest fixiert ist. Das Zusatzgewicht kann dann keine Relativbewegung zu den Komponenten der Gelenkwelle bzw. des Gelenks ausführen, die sich im Betrieb ggf. als nachteilig auswirken könnten.In order to avoid slippage of the additional weight within the joint and / or the propeller shaft in the axial direction, it is preferred if at the tubular shaft portion, the connection portion and / or their connection area, ie, for example, a weld, a substantially radially inwardly protruding projection is provided which limits a movement of the additional weight in an axial direction. This protrusion can be formed, for example, by an inwardly protruding bead of the weld seam, which connects the connection section of the joint to the tubular waveguide section. For securing the additional weight within the propeller shaft, it is particularly preferred if the additional weight in the connection portion and / or the tubular shaft portion is fixed in a fixed position both in the axial direction and in the direction of rotation. The additional weight can then perform no relative movement to the components of the propeller shaft or the joint, which could possibly be detrimental during operation.
Zur weiteren Tilgung von Vibrationen ist nach einer bevorzugten Ausführungs- form der Erfindung zumindest ein Teil des Anbindungsabschnitts und/oder zumindest ein Teil des rohrförmigen Wellenabschnitts beispielsweise mit Montageschaum ausgeschäumt. Der Montageschaum kann dabei auch zum Befestigen des Zusatzgewichtes eingesetzt sein.In order to further eradicate vibrations, according to a preferred embodiment of the invention, at least part of the connection section and / or at least part of the tubular shaft section is foamed, for example with mounting foam. The mounting foam can also be used to attach the additional weight.
Die Erfindung wird nachfolgend anhand von Ausführungsbeispielen und unter Bezugnahme auf die Zeichnung näher erläutert. Dabei bilden alle beschriebenen und/oder bildlich dargestellten Merkmale für sich oder in beliebiger Kombination den Gegenstand der Erfindung, unabhängig von ihrer Zusammenfassung in den Ansprüchen oder deren Rückbeziehung.The invention will be explained in more detail by means of embodiments and with reference to the drawings. All described and / or illustrated features alone or in any combination form the subject matter of the invention, regardless of their combination in the claims or their dependency.
Es zeigen:Show it:
Fig. 1 einen Längsschnitt durch ein Gelenk nach einer ersten Ausführungsform der Erfindung,1 shows a longitudinal section through a joint according to a first embodiment of the invention,
Fig. 2 einen Längsschnitt durch ein Detail eines Gelenks nach einer zweiten Ausführungsform der Erfindung undFig. 2 is a longitudinal section through a detail of a joint according to a second embodiment of the invention and
Fig. 3 einen Schnitt durch das Gelenk nach Fig. 2 entlang der Linie IH-III. In Fig. 1 ist ein Gleichlauffestgelenk 1 dargestellt, dessen Außennabe 2 unter anderem einen bereichsweise zylindrischen Anbindungsabschnitt 3 aufweist. Das Gelenk 1 ist in der Ausführungsform nach Fig. 1 mit einem Wellenzapfen 4 verbunden, der die Ausgangs- oder Eingangswelle eines Getriebes oder eines Differentials bilden kann. Das Gelenk 1 ist Bestandteil einer Gelenkwelle 5, welche in Fig. 1 durch einen im Wesentlichen rohrförmigen Wellenabschnitt 10 angedeutet ist, der mit dem Anbindungsabschnitt 3 des Gelenks 1 verbunden ist.Fig. 3 is a section through the joint of FIG. 2 along the line IH-III. In Fig. 1, a constant velocity fixed joint 1 is shown, the outer hub 2, inter alia, a partially cylindrical connection portion 3 has. The joint 1 is connected in the embodiment of Fig. 1 with a shaft journal 4, which may form the output or input shaft of a transmission or a differential. The joint 1 is part of a propeller shaft 5, which is indicated in Fig. 1 by a substantially tubular shaft portion 10 which is connected to the connecting portion 3 of the joint 1.
In der dargestellten Ausführungsform weist die Außennabe 2 des Gelenks 1 ne- ben dem bereichsweise zylindrischen Anbindungsabschnitt 3 ein von diesem drehfest umgriffenes weiteres Außennabenelement 6 auf, in welchem mehrere als Gegenbahnen ausgebildete Laufrillen ausgebildet sind. Das Gelenk 1 weist weiter eine Innennabe 7 auf, die ebenfalls mit als Gegenbahnen ausgebildeten Laufrillen versehen ist. In den einander paarweise zugeordneten Laufrillenpaa- ren der Außennabe 2 und der Innennabe 7 sind jeweils Kugeln 8 aufgenommen, die in einem Käfig 9 geführt sind. Hierdurch kann ein Drehmoment von der Innennabe 7 auf die Außennabe 2 sowie die mit dieser verbundene Hohlwelle 10 übertragen werden.In the illustrated embodiment, the outer hub 2 of the joint 1 in addition to the partially cylindrical connection portion 3 on a non-rotatably embraced another outer hub member 6, in which a plurality formed as counter paths grooves are formed. The joint 1 further has an inner hub 7, which is also provided with counter-tracks formed grooves. In the pairs associated Laufrillenpaa- ren of the outer hub 2 and the inner hub 7 each balls 8 are added, which are guided in a cage 9. As a result, a torque can be transmitted from the inner hub 7 to the outer hub 2 and the hollow shaft 10 connected thereto.
Zur Drehmomentübertragung zwischen der Innennabe 7 und dem Wellenzapfen 4 weist die Innennabe 7 in der Ausführungsform nach Fig. 1 eine im Wesentlichen hülsenförmige Gestalt mit einer zentralen Öffnung auf. Die Innenfläche dieser Öffnung der Innennabe 7 sowie die Außenfläche des Wellenzapfens 4 sind mit einer korrespondierenden Keilverzahnung 11 versehen. Der Wellenzap- fen 4 lässt sich somit drehfest in die Öffnung der Innennabe 7 einschieben und kann dort, wie nachfolgend erläutert wird, axial fixiert werden.For torque transmission between the inner hub 7 and the shaft journal 4, the inner hub 7 in the embodiment of FIG. 1 has a substantially tubular shape with a central opening. The inner surface of this opening of the inner hub 7 and the outer surface of the shaft journal 4 are provided with a corresponding spline 11. The shaft journal 4 can thus be inserted non-rotatably into the opening of the inner hub 7 and can be axially fixed there, as will be explained below.
In der Innenfläche der Öffnung der Innennabe 7 und auf der Außenfläche desIn the inner surface of the opening of the inner hub 7 and on the outer surface of the
Wellenzapfens 4 sind einander zugeordnete Nuten 12 bzw. 13 ausgebildet. Wei- ter ist die Öffnung der Innennabe 7 mit einer Einführschräge 14 versehen, die das Einschieben des Wellenzapfens 4 in die Öffnung der Innennabe 7 erleichtert. In die Nut 13 auf dem Wellenzapfen 4 ist ein Sicherungsring 15 eingesetzt, welcher vorzugsweise einen im Wesentlichen rechteckigen Querschnitt mit wenigstens einer Schräge aufweist. In seinem unbelasteten Zustand ragt der Si- cherungsring 15 zumindest abschnittsweise aus der Nut 13 heraus. Zur axialen Anbindung des Wellenzapfens 4 an die Innennabe 7 wird der Wellenzapfen 4 in die Innennabe 7 eingesteckt, wobei der Sicherungsring 15 durch die Einführschräge 14 an der Stirnseite der Innennabe 7 zunächst in die Nut 13 gedrängt wird. Sobald die Nuten 12 und 13 in ihrer in Fig. 1 dargestellten einander gege- nüberliegenden Position angeordnet sind, schnappt der Sicherungsring 15 unter radialer Aufweitung in Folge seiner Vorspannung auch in die Nut 12 der Innennabe 7 ein. Dies bewirkt die axiale Verbindung zwischen der Innennabe 7 und dem Wellenzapfen 4.Shaft journal 4 are mutually associated grooves 12 and 13, respectively. Further, the opening of the inner hub 7 is provided with an insertion bevel 14, the the insertion of the shaft journal 4 in the opening of the inner hub 7 facilitates. In the groove 13 on the shaft journal 4, a retaining ring 15 is used, which preferably has a substantially rectangular cross-section with at least one slope. In its unloaded state, the securing ring 15 protrudes out of the groove 13 at least in sections. For the axial connection of the shaft journal 4 to the inner hub 7 of the shaft journal 4 is inserted into the inner hub 7, wherein the locking ring 15 is urged by the insertion bevel 14 on the end face of the inner hub 7, first in the groove 13. As soon as the grooves 12 and 13 are arranged in their position lying opposite one another in FIG. 1, the securing ring 15 also snaps into the groove 12 of the inner hub 7 as a result of its pretension due to radial expansion. This causes the axial connection between the inner hub 7 and the shaft journal. 4
Weiter kann auf dem Wellenzapfen 4 eine zusätzliche Nut zur Aufnahme eines Dichtungsringes 16 vorgesehen sein. Zudem kann auf der Außenseite der Innennabe eine Montagenut ausgebildet sein, die den Eingriff nicht dargestellten Werkzeuges zum Zusammenschieben der Innennabe 7 und des Wellenzapfens 4 erlaubt. Zum Lösen der Verbindung zwischen dem Wellenzapfen 4 und der Innennabe 7 kann ein ebenfalls nicht dargestelltes Werkzeug in einem Demontagespalt zwischen der Stirnseite der Innennabe 7 und dem den Durchmesser des Wellenzapfens 4 aufweisenden Absatz eingebracht werden, so dass sich die Innennabe 7 von dem Wellenzapfen 4 abdrücken lässt. Dies wird dadurch begünstigt, dass der Sicherungsring 15 mit einer Schräge versehen ist, die mit einer Kante der Nut 12 der Innennabe 7 in Anlage kommt, so dass der Sicherungsring 15 bei der Demontage definiert radial nach innen in die Nut 13 zurückgedrängt werden kann.Further, 16 may be provided on the shaft journal 4, an additional groove for receiving a sealing ring. In addition, on the outside of the inner hub, a mounting groove may be formed, which allows the tool, not shown, for pushing together the inner hub 7 and the shaft journal 4. To release the connection between the shaft journal 4 and the inner hub 7, a likewise not shown tool in a disassembly gap between the end face of the inner hub 7 and the diameter of the shaft journal 4 having paragraph are introduced, so that the inner hub 7 from the shaft journal 4 leaves. This is facilitated by the fact that the securing ring 15 is provided with a bevel which comes into contact with an edge of the groove 12 of the inner hub 7 so that the securing ring 15 can be pushed back radially into the groove 13 during disassembly.
Zur Vermeidung von Vibrationen ist in dem Anbindungsabschnitt 3 der Außen- nabe 2 ein Zusatzgewicht 17 angeordnet. Dieses weist eine im Wesentlichen zylindrische Gestalt auf, wobei die dem Wellenzapfen 4 zugewandte Seite mit einem näherungsweise halbkugelförmigen Vorsprung versehen ist. Das Zusatzgewicht 17 liegt dabei im Wesentlichen bündig mit seiner Außenfläche an der Innenfläche des Anbindungsabschnittes 3 an und schmiegt sich auf seiner dem Wellenzapfen 4 zugewandten Seite in einen Deckel 18, welcher das Gelenk 1 gegenüber dem rohrförmigen Wellenabschnitt 10 der Gelenkwelle abschließt.In order to avoid vibrations, an additional weight 17 is arranged in the connection section 3 of the outer hub 2. This essentially has one cylindrical shape, wherein the shaft journal 4 facing side is provided with an approximately hemispherical projection. The additional weight 17 is substantially flush with its outer surface on the inner surface of the connecting portion 3 and nestles on its side facing the shaft journal 4 in a lid 18 which closes the hinge 1 with respect to the tubular shaft portion 10 of the propeller shaft.
Das Zusatzgewicht 17 ist zumindest im Wesentlichen rotationssymmetrisch ausgebildet und ist zentriert in den Anbindungsabschnitt 3 bzw. den Deckel 18 eingepasst. In axialer Richtung wird das Zusatzgewicht 17 einerseits durch den Deckel 18 und andererseits durch eine Schweißnaht 19 zwischen dem Anbindungsabschnitt 3 und dem rohrförmigen Wellenabschnitt 10 gehalten. Die Schweißnaht 19 bildet dabei einen radial nach innen vorspringenden Wulst, welcher das Zusatzgewicht 17 fixiert.The additional weight 17 is at least substantially rotationally symmetrical and is centered in the connection portion 3 and the lid 18 fitted. In the axial direction, the additional weight 17 is held on the one hand by the cover 18 and on the other hand by a weld 19 between the connecting portion 3 and the tubular shaft portion 10. The weld 19 forms a radially inwardly projecting bead, which fixes the additional weight 17.
Das Zusatzgewicht 17 besteht in der dargestellten Ausführungsform aus einem vergleichsweise schweren Metall, beispielsweise Blei. Die übrigen Komponenten des Gelenks 1 weisen dabei ein geringeres spezifisches Gewicht als das Zusatzgewicht 17 auf.The additional weight 17 is in the illustrated embodiment of a relatively heavy metal, such as lead. The other components of the joint 1 have a lower specific gravity than the additional weight 17.
In den Fig. 2 und 3 ist eine weitere Ausführungsform einer erfindungsgemäßen Gelenkwelle 5 dargestellt. Ähnlich der Ausführungsform nach Fig. 1 weist die Gelenkwelle 5 zumindest einen rohrförmigen Wellenabschnitt 10 sowie zumindest ein Gelenk 1 auf, von welchem lediglich der Anbindungsabschnitt 3 der Außennabe 2 dargestellt ist.FIGS. 2 and 3 show a further embodiment of a propeller shaft 5 according to the invention. Similar to the embodiment of FIG. 1, the propeller shaft 5 at least one tubular shaft portion 10 and at least one hinge 1, of which only the connection portion 3 of the outer hub 2 is shown.
In dem Anbindungsabschnitt 3 ist ein Tilger- oder Zusatzgewicht 17' angeordnet, welches sich bereichsweise bis in den rohrförmigen Wellenabschnitt 10 hineinerstreckt. In dem Bereich, in welchem die Schweißnaht 19 zur Verbindung des Anbindungsabschnittes 3 mit dem rohrförmigen Wellenabschnitt 10 vorgesehen ist, weist das Zusatzgewicht 17' einen verringerten Außendurchmesser auf, so dass zwischen der Innenwand des rohrförmigen Wellenabschnitts 10 und der Außenwand des Zusatzgewichtes 17' ein ringförmiger Freiraum entsteht.In the connection section 3, a Tilger- or additional weight 17 'is arranged, which extends in certain areas into the tubular shaft portion 10 hineinerstreckt. In the area in which the weld 19 is provided for connecting the attachment portion 3 with the tubular shaft portion 10 is, the additional weight 17 'has a reduced outer diameter, so that between the inner wall of the tubular shaft portion 10 and the outer wall of the additional weight 17', an annular space is formed.
Das Zusatzgewicht 17" ist in dem Anbindungsabschnitt 3 über eine Verprägung fixiert. Hierzu wird der Anbindungsabschnitt 3 des Gelenks 1 lokal von außen mit Druck beaufschlagt, so dass sich der Anbindungsabschnitt 3 bereichsweise radial nach innen wölbt und Vorsprünge 20 ausbildet. Diese greifen in entsprechende Ausnehmungen auf dem Zusatzgewicht 17' ein. Die Druckbeaufschla- gung kann auch derart erfolgen, dass die Vertiefungen in dem Zusatzgewicht 17' erst durch das Eindringen der Vorsprünge 20 erzeugt werden.The additional weight 17 "is fixed by an embossment in the connecting section 3. To this end, the connecting section 3 of the joint 1 is locally pressurized from the outside, so that the connecting section 3 curves in regions radially inwards and forms projections 20. These engage in corresponding recesses on the additional weight 17 'The pressurization can also take place in such a way that the depressions in the additional weight 17' are only generated by the penetration of the projections 20.
Zusätzlich zu der Fixierung des Zusatzgewichtes 17' mittels der Verprägung ist das Zusatzgewicht 17' auch mit einem Montageschaum 21 innerhalb des Anbin- dungsabschnittes 3 bzw. des rohrförmigen Wellenabschnitts 10 fixiert. So ist zumindest ein Teil des rohrförmigen Wellenabschnitts 10 sowie des Anbin- dungsabschnitts 3 mit Montageschaum 21 ausgeschäumt, der einerseits Vibrationen zusätzlich unterbindet und andererseits das Zusatzgewicht 17' festhalten kann.In addition to the fixation of the additional weight 17 'by means of the embossing, the additional weight 17' is also fixed with a mounting foam 21 within the connection section 3 or the tubular shaft section 10. Thus, at least part of the tubular shaft section 10 and the connection section 3 is foamed with mounting foam 21, which on the one hand additionally prevents vibrations and on the other hand can hold the additional weight 17 '.
Beim Stand der Technik, wie beispielsweise der DE 1 181 560, ist ein Dämpfelement in dem Rohr der Gelenkwelle vorgesehen. Dies bringt unter anderem eine schwierige Montage mit sich. Wird hingegen, wie bei der vorliegenden Erfindung, die Tilgermasse so nahe wie möglich an das Getrie- be/Hinterachsgetriebe herangebracht, bilden Tilger und Gelenk einen fertig montierte Einheit, die komplett an die Montagestraße geliefert werden kann. Hierdurch entfallen Montageschritte und die Möglichkeit, dass der Tilger im Rohr auswandern kann. Darüber hinaus erfüllt der Tilger durch seine Anordnung auch noch die Aufgabe der Abdichtung zum Rohr und/oder der Beugewinkelbegren- zung im Gelenk. In the prior art, such as DE 1 181 560, a damping element is provided in the tube of the propeller shaft. This brings with it, among other things, a difficult assembly. On the other hand, as in the present invention, if the absorber mass is brought as close as possible to the transmission / rear axle transmission, the absorber and joint form a fully assembled unit which can be delivered completely to the assembly line. This eliminates assembly steps and the possibility that the absorber can migrate in the pipe. In addition, the absorber by its arrangement also fulfills the task of sealing the tube and / or the bending angle limit in the joint.

Claims

Patentansprüche claims
1. Gelenk, insbesondere Gleichlauffestgelenk für eine Gelenkwelle eines Kraftfahrzeuges, mit einer Innennabe, auf deren Außenfläche Außenlaufbahnen vorgesehen sind, mit einer die Innennabe zumindest bereichsweise umgreifenden Außennabe, auf deren Innenfläche Innenlaufbahnen vorgesehen sind, und die einen zumindest näherungsweise zylindrischen Anbindungsabschnitt aufweist, und mit in einander zugeordneten Laufbahnpaaren angeordneten Kugeln zur Übertragung eines Drehmoments zwischen der Außennabe und der Innennabe, dadurch gekennzeichnet, dass in dem Anbindungsabschnitt ein Zusatzgewicht angeordnet ist.1. joint, in particular constant velocity fixed joint for a propeller shaft of a motor vehicle, with an inner hub, on the outer surface of outer raceways are provided with an inner hub at least partially encompassing outer hub, on the inner surface of inner raceways are provided, and which has an at least approximately cylindrical connection portion, and with arranged in mutually associated raceway pairs balls for transmitting a torque between the outer hub and the inner hub, characterized in that in the connection portion, an additional weight is arranged.
2. Gelenk nach Anspruch 1 , dadurch gekennzeichnet, dass in dem Anbin- dungsabschnitt ein Deckel angeordnet ist, in und/oder an dem das Zusatzgewicht vorgesehen ist.2. Joint according to claim 1, characterized in that in the connection portion a lid is arranged, in and / or on which the additional weight is provided.
3. Gelenk nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das Zusatzgewicht in dem Anbindungsabschnitt fixiert ist.3. Joint according to claim 1 or 2, characterized in that the additional weight is fixed in the connection portion.
4. Gelenk nach einem der der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Zusatzgewicht in dem Anbindungsabschnitt und/oder in dem Deckel verklemmt, verrastet, verschweißt und/oder verklebt ist.4. Joint according to one of the preceding claims, characterized in that the additional weight jammed in the connection portion and / or in the lid, is locked, welded and / or glued.
5. Gelenk nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Zusatzgewicht aus einem Material besteht, welches ein höhere spezifisches Gewicht als die übrigen Komponenten des Gelenks aufweist. 5. Joint according to one of the preceding claims, characterized in that the additional weight consists of a material which has a higher specific gravity than the other components of the joint.
6. Gelenk nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Zusatzgewicht zumindest näherungsweise rotationssymmetrisch ist und im Wesentlichen zentriert in der Außennabe angeordnet ist.6. Joint according to one of the preceding claims, characterized in that the additional weight is at least approximately rotationally symmetrical and is arranged substantially centered in the outer hub.
7. Gelenkwelle mit wenigstens einem Gelenk nach einem der vorhergehenden Ansprüche.7. PTO shaft with at least one joint according to one of the preceding claims.
8. Gelenkwelle nach Anspruch 7, mit wenigstens einem rohrförmigen Wellenabschnitt, der mit dem Anbindungsabschnitt eines Gelenks nach einem der Ansprüche 1 bis 6 verbunden, insbesondere verschweißt, ist.8. PTO shaft according to claim 7, with at least one tubular shaft portion connected to the connection portion of a joint according to one of claims 1 to 6, in particular welded, is.
9. Gelenkwelle nach Anspruch 8, dadurch gekennzeichnet, dass das Zusatzgewicht sich bereichsweise in den rohrförmigen Wellenabschnitt erstreckt.9. PTO shaft according to claim 8, characterized in that the additional weight extends partially in the tubular shaft portion.
10. Gelenkwelle nach Anspruch 8 oder 9, dadurch gekennzeichnet, dass an dem rohrförmigen Wellenabschnitt, dem Anbindungsabschnitt und/oder deren Verbindungsbereich ein im Wesentlichen radial nach innen ragender Vorsprung vorgesehen ist, der eine Bewegung des Zusatzgewichtes in einer axialen Richtung begrenzt.10. PTO shaft according to claim 8 or 9, characterized in that on the tubular shaft portion, the connecting portion and / or the connecting portion of a substantially radially inwardly projecting projection is provided which limits a movement of the additional weight in an axial direction.
11. Gelenkwelle nach einem der Ansprüche 7 bis 10, dadurch gekennzeichnet, dass das Zusatzgewicht in dem Anbindungsabschnitt und/oder in dem rohrförmigen Wellenabschnitt sowohl in axialer Richtung als auch in Drehrichtung ortsfest fixiert ist.11. PTO shaft according to one of claims 7 to 10, characterized in that the additional weight is fixed in the connecting portion and / or in the tubular shaft portion fixed both in the axial direction and in the direction of rotation.
12. Gelenkwelle nach einem der Ansprüche 7 bis 11 , dadurch gekennzeichnet, dass zumindest ein Teil des Anbindungsabschnittes und/oder zumindest ein Teil des rohrförmigen Wellenabschnittes ausgeschäumt sind. 12. PTO shaft according to one of claims 7 to 11, characterized in that at least a part of the connecting portion and / or at least a part of the tubular shaft portion are filled with foam.
PCT/DE2008/001208 2007-07-26 2008-07-25 Articulation and articulated shaft comprising the same WO2009012768A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112008002695T DE112008002695A5 (en) 2007-07-26 2008-07-25 Joint and drive shaft hereby

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007035469 2007-07-26
DE102007035469.1 2007-07-26

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WO2009012768A1 true WO2009012768A1 (en) 2009-01-29

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PCT/DE2008/001208 WO2009012768A1 (en) 2007-07-26 2008-07-25 Articulation and articulated shaft comprising the same

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DE (2) DE102008031395A1 (en)
WO (1) WO2009012768A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013102253A1 (en) * 2013-03-07 2014-09-11 Gkn Driveline International Gmbh Drive shaft assembly for a motor vehicle

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1181560B (en) * 1961-03-01 1964-11-12 Daimler Benz Ag Damper for a tubular cardan shaft for the transmission of a drive torque in vehicles, especially in motor vehicles
US5326324A (en) * 1991-11-25 1994-07-05 Tokai Rubber Industries, Ltd. Dynamic damper for hollow drive shaft
US6015350A (en) * 1997-12-03 2000-01-18 Dana Corporation Collapsible vehicle driveshaft
FR2882013A1 (en) * 2005-02-17 2006-08-18 Shaft Form Engineering Gmbh TRANSMISSION SHAFT AND HOMOCINETIC SEAL
US20070105461A1 (en) * 2005-11-10 2007-05-10 James Lyon Propeller shaft assembly with energy absorbing material

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1181560B (en) * 1961-03-01 1964-11-12 Daimler Benz Ag Damper for a tubular cardan shaft for the transmission of a drive torque in vehicles, especially in motor vehicles
US5326324A (en) * 1991-11-25 1994-07-05 Tokai Rubber Industries, Ltd. Dynamic damper for hollow drive shaft
US6015350A (en) * 1997-12-03 2000-01-18 Dana Corporation Collapsible vehicle driveshaft
FR2882013A1 (en) * 2005-02-17 2006-08-18 Shaft Form Engineering Gmbh TRANSMISSION SHAFT AND HOMOCINETIC SEAL
US20070105461A1 (en) * 2005-11-10 2007-05-10 James Lyon Propeller shaft assembly with energy absorbing material

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013102253A1 (en) * 2013-03-07 2014-09-11 Gkn Driveline International Gmbh Drive shaft assembly for a motor vehicle

Also Published As

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DE102008031395A1 (en) 2009-07-02
DE112008002695A5 (en) 2010-07-15

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