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WO2009027146A1 - Spur gear differential - Google Patents

Spur gear differential Download PDF

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Publication number
WO2009027146A1
WO2009027146A1 PCT/EP2008/059160 EP2008059160W WO2009027146A1 WO 2009027146 A1 WO2009027146 A1 WO 2009027146A1 EP 2008059160 W EP2008059160 W EP 2008059160W WO 2009027146 A1 WO2009027146 A1 WO 2009027146A1
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WO
WIPO (PCT)
Prior art keywords
spur gear
drive element
disc
spurraddifferential
shaped
Prior art date
Application number
PCT/EP2008/059160
Other languages
German (de)
French (fr)
Inventor
Thorsten Biermann
Norbert Metten
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 WO2009027146A1 publication Critical patent/WO2009027146A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H48/00—Differential gearings
    • F16H48/06—Differential gearings with gears having orbital motion
    • F16H48/10—Differential gearings with gears having orbital motion with orbital spur gears
    • F16H48/11—Differential gearings with gears having orbital motion with orbital spur gears having intermeshing planet gears
    • 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
    • F16H—GEARING
    • F16H48/00—Differential gearings
    • F16H48/06—Differential gearings with gears having orbital motion
    • F16H48/10—Differential gearings with gears having orbital motion with orbital spur gears
    • F16H2048/106—Differential gearings with gears having orbital motion with orbital spur gears characterised by two sun gears

Definitions

  • the invention relates to a spur gear, in particular for motor vehicles, having a drive element which is non-rotatably connected to a planet carrier, wherein in the planet carrier at least a pair of meshing planetary gears is rotatably arranged and wherein the planet gears mesh with a toothed driven gear.
  • a spur gear of the generic type is known for example from EP 0 918 177 A1.
  • a drive element for example in the form of a spur gear, drives a differential housing, in which a plurality of planet gears are rotatably mounted.
  • the planetary gears are in pairs with each other and with toothed driven wheels in engagement.
  • the likewise rotatably mounted in the differential housing output wheels are connected to drive shafts for the driven wheels of the motor vehicle.
  • the present invention is based on the invention, a spur gear differential of the type mentioned in such a way that the mentioned disadvantages are avoided or at least reduced.
  • an enlarged installation space for the planetary gears should be made available so that a larger toothing width can be used, also designed as helical toothing.
  • the production is to be simplified and thus cheaper.
  • the solu tion of this object by the invention is characterized in that the planet carrier of the spur gear is formed by two spaced apart and mutually parallel disc-shaped carrier, which are connected to the drive element.
  • an externally toothed spur gear is preferably used as the drive element.
  • the toothing of the spur gear can extend only over part of the width of the drive element.
  • the toothing of the spur gear can be arranged in an axial end region of the drive element.
  • the disc-shaped carriers are preferably riveted to the drive element. It can be provided that the riveting used upcoming rivets enforce both disc-shaped carrier. In particular, the rivets can enforce both disc-shaped carrier and the drive element.
  • the disc-shaped carrier are welded to the drive element.
  • Another alternative is the soldering of the disc-shaped carrier with the drive element. The screwing of the carriers is also possible.
  • the disc-shaped carriers are preferably arranged in the two axial end regions of the drive element.
  • the disc-shaped carrier made of sheet metal.
  • the disc-shaped carrier have sleeve-shaped extensions which encase partially wave-shaped sections of the driven wheels.
  • the sleeve-shaped extensions can thereby bearings, especially plain bearings, form the wave-shaped sections.
  • Bolts for supporting the planetary gears may be fastened in the disc-shaped carriers.
  • the spur gear differential preferably has four or five pairs of meshing planetary gears.
  • the planet gears may have a section without teeth in addition to a toothed section.
  • Fig. 1 shows the radial section through a spur gear
  • FIG. 2 is a perspective view of the spur gear according to FIG. 1.
  • a spur gear 1 is seen, which provides in a known manner for the compensation of different rotational speeds of the output shafts of a motor vehicle when cornering.
  • the spur gear differential 1 has a drive element 2 in the form of a spur gear.
  • the spur gear is driven via a gearbox and a propeller shaft of an internal combustion engine via a pinion, not shown, which engages in a toothing 10 which is incorporated in the spur gear 2.
  • Pinion together with spur gear 1 are arranged in a housing, not shown.
  • the spur gear 2 is rotatably connected to a planet carrier 3.
  • the planet carrier 3 is formed by two spaced apart a and parallel to each other disc-shaped carrier 8 and 9.
  • the Both carriers 8, 9 are connected via a rivet connection with the spur gear 2.
  • a number of rivets 11 - namely 12 rivets - arranged equidistantly over the circumference of the carrier 8, 9 arranged.
  • the rivets 11 pass through the carriers 8 and 9 and the spur gear 2.
  • the two carriers 8, 9 are arranged in the axial end regions of the spur gear 2.
  • 2 annular grooves 17, 18 are incorporated in the two end faces of the spur gear, so that the carrier 8, 9 rest in a defined radial position on the spur gear 2.
  • the planetary gears 4, 5 wear, with two adjacent planet gears mesh with each other.
  • the planet wheels 4, 5 mesh in turn with teeth 19 and 20 in the driven wheels 6 and 7, which are rotatably connected to the drive shafts of the wheels of the vehicle.
  • the carriers 8, 9 are designed as sheets, which have sleeve-shaped extensions 12 and 13, the wavy portions 14, 15 of the driven wheels 6, 7 surround and store.
  • the transmission of the torques can be carried out particularly favorably when stepped planet wheels 4, 5 are used, which have sections of teeth with two different pitch circles.
  • the sheets 8, 9 serve, as already mentioned, as a receptacle for the pin bearing of the planet gears 4, 5. Particularly advantageous is the widened spur gear 2, via which the axial space of the differential is generated.
  • the plates 8, 9 of the differential can be used in different variants, which differ only in their width.
  • By using different spur gears and planetary gear sets it is possible to adjust the differentials to the torques in separate units without changing the cover construction. In terms of tools, costs can be saved here by using identical parts.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Retarders (AREA)

Abstract

The invention relates to a spur gear differential (1), particularly for motor vehicles, comprising a drive element (2), which is rotationally fixed to a planet carrier (3), wherein in the planet carrier (3) at least one pair of planetary gears (4, 5) that mesh with one another are rotatably arranged and wherein the planetary gears (4, 5) each mesh with a toothed driven wheel (6, 7). In order to provide a spur gear differential of said kind with sufficient installation space for the planetary gears, the invention provides for the planet carrier (3) to be formed by two disk-shaped carriers (8, 9), arranged at a distance (a) from each other and parallel to each other, which are connected to the drive element (2).

Description

Stirnraddifferential spur gear
Beschreibungdescription
Gebiet der ErfindungField of the invention
Die Erfindung betrifft ein Stirnraddifferential, insbesondere für Kraftfahrzeuge, mit einem Antriebselement, das drehfest mit einem Planetenträger verbunden ist, wobei in dem Planetenträger mindestens ein Paar miteinander kämmender Planetenräder drehbar angeordnet ist und wobei die Planetenräder mit je einem verzahnten Abtriebsrad kämmen.The invention relates to a spur gear, in particular for motor vehicles, having a drive element which is non-rotatably connected to a planet carrier, wherein in the planet carrier at least a pair of meshing planetary gears is rotatably arranged and wherein the planet gears mesh with a toothed driven gear.
Hintergrund der ErfindungBackground of the invention
Ein Stirnraddifferential der gattungsgemäßen Art ist beispielsweise aus der EP 0 918 177 A1 bekannt. Ein Antriebselement, beispielsweise in Form eines Stirnrads, treibt ein Ausgleichsgehäuse an, in dem mehrere Planetenräder drehbar gelagert sind. Dabei sind die Planetenräder paarweise miteinander und mit verzahnten Abtriebsrädern in Eingriff. Die ebenfalls im Ausgleichsgehäuse drehbar gelagerten Abtriebsräder sind mit Antriebswellen für die angetriebenen Räder des Kraftfahrzeugs verbunden.A spur gear of the generic type is known for example from EP 0 918 177 A1. A drive element, for example in the form of a spur gear, drives a differential housing, in which a plurality of planet gears are rotatably mounted. The planetary gears are in pairs with each other and with toothed driven wheels in engagement. The likewise rotatably mounted in the differential housing output wheels are connected to drive shafts for the driven wheels of the motor vehicle.
Derartige Stirnraddifferentials stellen also eine Alternative zu den klassischen Differentialen dar, die mit Kegelradsätzen arbeiten. Es sei hierzu exemplarisch auf die DE 195 46 330 C1 hingewiesen.Such Stirnraddifferentials thus represent an alternative to the classic differentials that work with Kegelradsätzen. Reference is hereby made by way of example to DE 195 46 330 C1.
Spezielle Ausbildungen eines Planetenträgers gehen aus der DE 299 06 157 U1 und aus der DE 103 34 459 A1 hervor. Die vorbekannten Stirnraddifferentiale leiden unter dem Nachteil, dass der Bauraum für die Planetenräder relativ begrenzt ist. Daher kann nur eine relativ geringe Verzahnungsbreite vorgesehen werden, was die Tragfähigkeit des Stirnraddifferentials begrenzt. Es ist zudem schwierig, die Planetenräder als Schrägverzahnungen auszubilden, was grundsätzlich unter schwingungstechnischen Gesichtspunkten vorteilhaft ist. Die Fertigung der vorbekannten Stirnraddifferentiale ist zudem relativ aufwändig, so dass die Kosten für die Differentiale relativ hoch sind.Special embodiments of a planet carrier are described in DE 299 06 157 U1 and in DE 103 34 459 A1. The known Stirnraddifferentiale suffer from the disadvantage that the space for the planetary gears is relatively limited. Therefore, only a relatively small tooth width can be provided, which limits the carrying capacity of the spur gear differential. It is also difficult to form the planetary gears as helical gears, which is basically advantageous in terms of vibration technology. The production of the known Stirnraddifferentiale is also relatively expensive, so that the cost of the differentials are relatively high.
Aufgabe der ErfindungObject of the invention
Der vorliegenden Erfindung liegt die Au fg a b e zugrunde, ein Stirnraddifferential der eingangs genannten Gattung so fortzubilden, dass die erwähnten Nachteile vermieden oder zumindest reduziert werden. Es soll also ein vergrö- ßerter Bauraum für die Planetenräder zur Verfügung gestellt werden, so dass eine größere Verzahnungsbreite nutzbar wird, auch als Schrägverzahnung ausgebildet. Die Fertigung soll vereinfacht und damit kostengünstiger werden.The present invention is based on the invention, a spur gear differential of the type mentioned in such a way that the mentioned disadvantages are avoided or at least reduced. Thus, an enlarged installation space for the planetary gears should be made available so that a larger toothing width can be used, also designed as helical toothing. The production is to be simplified and thus cheaper.
Zusammenfassung der ErfindungSummary of the invention
Die Lö s u n g dieser Aufgabe durch die Erfindung ist dadurch gekennzeichnet, dass der Planetenträger des Stirnraddifferentials durch zwei im Abstand und parallel zueinander angeordnete scheibenförmige Träger gebildet wird, die mit dem Antriebselement verbunden sind. Dabei kommt als Antriebselement bevorzugt ein außenverzahntes Stirnrad zum Einsatz. Die Verzahnung des Stirnrads kann sich dabei nur über einen Teil der Breite des Antriebselements erstrecken. Die Verzahnung des Stirnrads kann in einem axialen Endbereich des Antriebselements angeordnet sein.The solu tion of this object by the invention is characterized in that the planet carrier of the spur gear is formed by two spaced apart and mutually parallel disc-shaped carrier, which are connected to the drive element. In this case, an externally toothed spur gear is preferably used as the drive element. The toothing of the spur gear can extend only over part of the width of the drive element. The toothing of the spur gear can be arranged in an axial end region of the drive element.
Die scheibenförmigen Träger sind bevorzugt mit dem Antriebselement vernietet. Dabei kann vorgesehen werden, dass die für die Vernietung zum Einsatz kommenden Niete beide scheibenförmigen Träger durchsetzen. Insbesondere können die Niete beide scheibenförmigen Träger und das Antriebselement durchsetzen.The disc-shaped carriers are preferably riveted to the drive element. It can be provided that the riveting used upcoming rivets enforce both disc-shaped carrier. In particular, the rivets can enforce both disc-shaped carrier and the drive element.
Alternativ kann auch vorgesehen sein, dass die scheibenförmigen Träger mit dem Antriebselement verschweißt sind. Eine weitere Alternative ist die Verlötung der scheibenförmigen Träger mit dem Antriebselement. Auch ist die Ver- schraubung der Träger möglich.Alternatively it can also be provided that the disc-shaped carrier are welded to the drive element. Another alternative is the soldering of the disc-shaped carrier with the drive element. The screwing of the carriers is also possible.
Die scheibenförmigen Träger sind bevorzugt in den beiden axialen Endbereichen des Antriebselements angeordnet.The disc-shaped carriers are preferably arranged in the two axial end regions of the drive element.
Bevorzugt bestehen die scheibenförmigen Träger aus Blech. In diesem Falle ist mit Vorteil vorgesehen, dass die scheibenförmigen Träger hülsenförmige Fortsätze aufweisen, die teilweise wellenförmige Abschnitte der Abtriebsräder umhüllen. Die hülsenförmigen Fortsätze können dabei Lager, insbesondere Gleitlager, für die wellenförmigen Abschnitte bilden.Preferably, the disc-shaped carrier made of sheet metal. In this case, it is advantageously provided that the disc-shaped carrier have sleeve-shaped extensions which encase partially wave-shaped sections of the driven wheels. The sleeve-shaped extensions can thereby bearings, especially plain bearings, form the wave-shaped sections.
In den scheibenförmigen Trägern können Bolzen zur Lagerung der Planeten- räder befestigt sein.Bolts for supporting the planetary gears may be fastened in the disc-shaped carriers.
Das Stirnraddifferential hat bevorzugt vier oder fünf Paare miteinander kämmender Planetenräder.The spur gear differential preferably has four or five pairs of meshing planetary gears.
Die Planetenräder können neben einem verzahnten Abschnitt einen Abschnitt ohne Verzahnung aufweisen.The planet gears may have a section without teeth in addition to a toothed section.
Mit der vorgeschlagenen Konzeption wird es möglich, den Bauraum für die Planetenräder zu vergrößern. Die verfügbare Verzahnungsbreite wird dadurch ebenfalls vergrößert, was wiederum die Übertragungsleistung des Differentials vergrößert. Es können Planetenräder mit Schrägverzahnung eingesetzt werden, was die Geräusch- und Schwingungsbildung vermindert. Die Verbindung von Stirnrad und seitlichen Trägerblechen kann mit der bevorzugten Nietverbindung erfolgen, wodurch schädigender Wärmeeintrag in das Differential während der Montage vermindert werden kann.With the proposed concept, it becomes possible to increase the space for the planetary gears. The available gearing width is thereby also increased, which in turn increases the transmission power of the differential. It can planetary gears are used with helical teeth, which reduces the noise and vibration. The connection of the spur gear and side support plates can be done with the preferred rivet connection, whereby damaging heat input into the differential during assembly can be reduced.
Die Fertigung der benötigten Komponenten des Differentials ist in einfacher und damit kostengünstiger Weise möglich.The production of the required components of the differential is possible in a simple and therefore cost-effective manner.
Kurze Beschreibung der FigurenBrief description of the figures
In den Zeichnungen ist ein Ausführungsbeispiel der Erfindung dargestellt. Es zeigen:In the drawings, an embodiment of the invention is shown. Show it:
Fig. 1 den Radialschnitt durch ein Stirnraddifferential undFig. 1 shows the radial section through a spur gear and
Fig. 2 eine perspektivische Darstellung des Stirnraddifferentials gemäß Fig. 1.2 is a perspective view of the spur gear according to FIG. 1.
Ausführliche Beschreibung der FigurenDetailed description of the figures
In den Figuren ist ein Stirnraddifferential 1 zu sehen, das in bekannter Weise für den Ausgleich unterschiedlicher Drehgeschwindigkeiten der Abtriebswellen eines Kraftfahrzeugs bei der Kurvenfahrt sorgt. Das Stirnraddifferential 1 hat ein Antriebselement 2 in Form eines Stirnrades. Das Stirnrad wird über ein Schaltgetriebe und eine Gelenkwelle von einer Brennkraftmaschine über ein nicht dargestelltes Ritzel angetrieben, das in eine Verzahnung 10 eingreift, die in das Stirnrad 2 eingearbeitet ist. Ritzel samt Stirnraddifferential 1 sind in einem nicht dargestellten Gehäuse angeordnet.In the figures, a spur gear 1 is seen, which provides in a known manner for the compensation of different rotational speeds of the output shafts of a motor vehicle when cornering. The spur gear differential 1 has a drive element 2 in the form of a spur gear. The spur gear is driven via a gearbox and a propeller shaft of an internal combustion engine via a pinion, not shown, which engages in a toothing 10 which is incorporated in the spur gear 2. Pinion together with spur gear 1 are arranged in a housing, not shown.
Zur Ermöglichung der Differential-Ausgleichsbewegung ist der in Fig. 1 näher dargestellte Aufbau vorgesehen: Das Stirnrad 2 ist mit einem Planetenträger 3 drehfest verbunden. Der Planetenträger 3 wird durch zwei im Abstand a und parallel zueinander angeordnete scheibenförmige Träger 8 und 9 gebildet. Die beiden Träger 8, 9 sind dabei über eine Nietverbindung mit dem Stirnrad 2 verbunden. Wie in der Zusammenschau der Figuren gesehen werden kann, sind eine Anzahl Niete 11 - nämlich 12 Niete - äquidistant über den Umfang der Träger 8, 9 verteilt angeordnet. Die Niete 11 durchsetzen dabei die Träger 8 und 9 und das Stirnrad 2. Die beiden Träger 8, 9 sind dabei in den axialen Endbereichen des Stirnrads 2 angeordnet. Hierfür sind in die beiden Stirnseiten des Stirnrads 2 Ringnuten 17, 18 eingearbeitet, so dass die Träger 8, 9 in definierter radialer Position am Stirnrad 2 anliegen.To enable the differential compensating movement of the structure shown in more detail in Fig. 1 is provided: The spur gear 2 is rotatably connected to a planet carrier 3. The planet carrier 3 is formed by two spaced apart a and parallel to each other disc-shaped carrier 8 and 9. The Both carriers 8, 9 are connected via a rivet connection with the spur gear 2. As can be seen in the synopsis of the figures, a number of rivets 11 - namely 12 rivets - arranged equidistantly over the circumference of the carrier 8, 9 arranged. The rivets 11 pass through the carriers 8 and 9 and the spur gear 2. The two carriers 8, 9 are arranged in the axial end regions of the spur gear 2. For this purpose, 2 annular grooves 17, 18 are incorporated in the two end faces of the spur gear, so that the carrier 8, 9 rest in a defined radial position on the spur gear 2.
In den beiden Trägern 8, 9 sind acht Bolzen 16 angeordnet, die Planetenräder 4, 5 tragen, wobei je zwei benachbarte Planetenräder miteinander kämmen. Die Planetenräder 4, 5 kämmen wiederum mit Verzahnungen 19 und 20 in den Abtriebsrädern 6 und 7, die drehfest mit den Antriebswellen der Räder des Fahrzeugs verbunden sind.In the two carriers 8, 9 eight bolts 16 are arranged, the planetary gears 4, 5 wear, with two adjacent planet gears mesh with each other. The planet wheels 4, 5 mesh in turn with teeth 19 and 20 in the driven wheels 6 and 7, which are rotatably connected to the drive shafts of the wheels of the vehicle.
Die Träger 8, 9 sind als Bleche ausgeführt, die hülsenförmige Fortsätze 12 und 13 aufweisen, die wellenförmige Abschnitte 14, 15 der Abtriebsräder 6, 7 umgeben und lagern.The carriers 8, 9 are designed as sheets, which have sleeve-shaped extensions 12 and 13, the wavy portions 14, 15 of the driven wheels 6, 7 surround and store.
Die Übertragung der Drehmomente kann besonders günstig erfolgen, wenn abgesetzte Planetenräder 4, 5 eingesetzt werden, die abschnittsweise Verzahnungen mit zwei verschiedenen Teilkreisen aufweisen.The transmission of the torques can be carried out particularly favorably when stepped planet wheels 4, 5 are used, which have sections of teeth with two different pitch circles.
Wird die bevorzugte Festlegung der Bleche 8, 9 mittels der Niete 11 vorgese- hen, wird der Wärmeeintrag im Verhältnis zum Schweißen oder Löten bei der Montage des Stirnraddifferentials vermindert, wodurch Wärmeverzüge vermieden werden können. Zudem eröffnen sich hierdurch größere Freiheiten in Bezug auf die Werkstoffauswahl. Auch wird die Prozesssicherheit hierdurch positiv beeinflusst.If the preferred fixing of the sheets 8, 9 is provided by means of the rivet 11, the heat input in relation to the welding or soldering during assembly of the spur gear differential is reduced, as a result of which heat distortion can be avoided. In addition, this opens up greater freedom in terms of material selection. Also, the process reliability is positively influenced by this.
Die Bleche 8, 9 dienen, wie bereits erwähnt, als Aufnahme für die Bolzenlagerung der Planetenräder 4, 5. Besonders vorteilhaft ist das verbreiterte Stirnrad 2, über das der axiale Bau- raum des Differentials generiert wird.The sheets 8, 9 serve, as already mentioned, as a receptacle for the pin bearing of the planet gears 4, 5. Particularly advantageous is the widened spur gear 2, via which the axial space of the differential is generated.
Die Bleche 8, 9 des Differentials können in unterschiedlichen Varianten einge- setzt werden, die sich lediglich in ihrer Breite unterscheiden. Durch die Verwendung verschiedener Stirnräder und Planetensätze besteht die Möglichkeit, die Differentiale auf die Drehmomente in separaten Aggregaten abzustimmen, ohne die Deckelkonstruktion zu verändern. Werkzeugtechnisch können hier durch die Verwendung von Gleichteilen Kosten eingespart werden. The plates 8, 9 of the differential can be used in different variants, which differ only in their width. By using different spur gears and planetary gear sets it is possible to adjust the differentials to the torques in separate units without changing the cover construction. In terms of tools, costs can be saved here by using identical parts.
BezugszeichenlisteLIST OF REFERENCE NUMBERS
1 Stirnraddifferential1 spur gear differential
2 Anthebselement (Stirnrad)2 Anthebselement (spur gear)
3 Planetenträger3 planet carrier
4 Planetenrad4 planetary gear
5 Planetenrad5 planetary gear
6 Abtriebsrad6 output gear
7 Abtriebsrad7 output gear
8 scheibenförmiger Träger (Seitenblech)8 disc-shaped carrier (side plate)
9 scheibenförmiger Träger (Seitenblech)9 disc-shaped carrier (side plate)
10 Verzahnung10 toothing
11 Niet11 rivet
12 hülsenförmiger Fortsatz12 sleeve-shaped extension
13 hülsenförmiger Fortsatz13 sleeve-shaped extension
14 wellenförmiger Abschnitt14 wave-shaped section
15 wellenförmiger Abschnitt15 wavy section
16 Bolzen16 bolts
17 Ringnut17 ring groove
18 Ringnut18 ring groove
19 Verzahnung19 toothing
20 Verzahnung20 toothing
a Abstand a distance

Claims

Patentansprüche claims
1. Stirnraddifferential (1 ), insbesondere für Kraftfahrzeuge, mit einem Antriebselement (2), das drehfest mit einem Planetenträger (3) verbunden ist, wobei in dem Planetenträger (3) mindestens ein Paar miteinander kämmender Planetenräder (4, 5) drehbar angeordnet ist und wobei die Planetenräder (4, 5) mit je einem verzahnten Abtriebsrad (6, 7) kämmen, dadurch gekennzeichnet, dass der Planetenträger (3) durch zwei im1. spur gear (1), in particular for motor vehicles, with a drive element (2) rotatably connected to a planet carrier (3), wherein in the planet carrier (3) at least one pair of meshing planet wheels (4, 5) is rotatably arranged and wherein the planet wheels (4, 5) each mesh with a toothed output gear (6, 7), characterized in that the planet carrier (3) by two in the
Abstand (a) und parallel zueinander angeordnete scheibenförmige Träger (8, 9) gebildet wird, die mit dem Antriebselement (2) verbunden sind.Distance (a) and mutually parallel disc-shaped carrier (8, 9) is formed, which are connected to the drive element (2).
2. Stirnraddifferential nach Anspruch 1 , dadurch gekennzeichnet, dass das Antriebselement (2) ein außenverzahntes Stirnrad ist.2. spur gear according to claim 1, characterized in that the drive element (2) is an externally toothed spur gear.
3. Stirnraddifferential nach Anspruch 2, dadurch gekennzeichnet, dass sich die Verzahnung (10) des Stirnrads nur über einen Teil der Breite des Antriebselements (2) erstreckt.3. Spurraddifferential according to claim 2, characterized in that extending the toothing (10) of the spur gear only over part of the width of the drive element (2).
4. Stirnraddifferential nach Anspruch 3, dadurch gekennzeichnet, dass die Verzahnung (10) des Stirnrads in einem axialen Endbereich des Antriebselements (2) angeordnet ist.4. spur gear according to claim 3, characterized in that the toothing (10) of the spur gear in an axial end portion of the drive element (2) is arranged.
5. Stirnraddifferential nach Anspruch 1 , dadurch gekennzeichnet, dass die scheibenförmigen Träger (8, 9) mit dem Antriebselement (2) vernietet sind.5. Spurraddifferential according to claim 1, characterized in that the disc-shaped carrier (8, 9) with the drive element (2) are riveted.
6. Stirnraddifferential nach Anspruch 5, dadurch gekennzeichnet, dass die für die Vernietung zum Einsatz kommenden Niete (11 ) beide scheibenförmigen Träger (8, 9) durchsetzen. 6. Spurraddifferential according to claim 5, characterized in that the riveting used for use rivets (11) both disc-shaped carrier (8, 9) prevail.
7. Stirnraddifferential nach Anspruch 6, dadurch gekennzeichnet, dass die Niete (11 ) beide scheibenförmigen Träger (8, 9) und das Antriebs- element (2) durchsetzen.7. spur gear according to claim 6, characterized in that the rivets (11) both disc-shaped carrier (8, 9) and the drive element (2) pass through.
8. Stirnraddifferential nach Anspruch 1 , dadurch gekennzeichnet, dass die scheibenförmigen Träger (8, 9) mit dem Antriebselement (2) verschweißt sind.8. spur gear according to claim 1, characterized in that the disc-shaped carrier (8, 9) with the drive element (2) are welded.
9. Stirnraddifferential nach Anspruch 1 , dadurch gekennzeichnet, dass die scheibenförmigen Träger (8, 9) mit dem Antriebselement (2) verlötet sind.9. Spurraddifferential according to claim 1, characterized in that the disc-shaped carrier (8, 9) are soldered to the drive element (2).
10. Stirnraddifferential nach Anspruch 1 , dadurch gekennzeichnet, dass die scheibenförmigen Träger (8, 9) mit dem Antriebselement (2) ver- schraubt sind.10. Spurraddifferential according to claim 1, characterized in that the disc-shaped carrier (8, 9) with the drive element (2) are screwed.
11. Stirnraddifferential nach Anspruch 1 , dadurch gekennzeichnet, dass die scheibenförmigen Träger (8, 9) in den beiden axialen Endbereichen des Antriebselements (2) angeordnet sind.11. Spurraddifferential according to claim 1, characterized in that the disc-shaped carrier (8, 9) in the two axial end portions of the drive element (2) are arranged.
12. Stirnraddifferential nach Anspruch 1 , dadurch gekennzeichnet, dass die scheibenförmigen Träger (8, 9) aus Blech bestehen.12. Spurraddifferential according to claim 1, characterized in that the disc-shaped carrier (8, 9) consist of sheet metal.
13. Stirnraddifferential nach Anspruch 12, dadurch gekennzeichnet, dass die scheibenförmigen Träger (8, 9) hülsenförmige Fortsätze (12, 13) aufweisen, die teilweise wellenförmige Abschnitte (14, 15) der Abtriebsräder (6, 7) umhüllen.13. Spurraddifferential according to claim 12, characterized in that the disc-shaped carrier (8, 9) sleeve-shaped projections (12, 13), the partially wave-shaped portions (14, 15) of the driven wheels (6, 7) envelop.
14. Stirnraddifferential nach Anspruch 13, dadurch gekennzeichnet, dass die hülsenförmige Fortsätze (12, 13) Lager für die wellenförmigen Abschnitte (14, 15) bilden. 14. Spurraddifferential according to claim 13, characterized in that the sleeve-shaped extensions (12, 13) bearings for the wave-shaped portions (14, 15) form.
15. Stirnraddifferential nach Anspruch 14, dadurch gekennzeichnet, dass die Lager Gleitlager sind.15. spur gear according to claim 14, characterized in that the bearings are plain bearings.
16. Stirnraddifferential nach Anspruch 1 , dadurch gekennzeichnet, dass in den scheibenförmigen Trägern (8, 9) Bolzen (16) zur Lagerung der Planetenräder (4, 5) befestigt sind.16, spur gear according to claim 1, characterized in that in the disc-shaped carriers (8, 9) bolts (16) for supporting the planet wheels (4, 5) are attached.
17. Stirnraddifferential nach Anspruch 1 , dadurch gekennzeichnet, dass es vier oder fünf Paare miteinander kämmender Planetenräder (4, 5) aufweist.17. Spurraddifferential according to claim 1, characterized in that it comprises four or five pairs of meshing planet gears (4, 5).
18. Stirnraddifferential nach Anspruch 1 , dadurch gekennzeichnet, dass die Planetenräder (4, 5) neben einem verzahnten Abschnitt einen Abschnitt ohne Verzahnung aufweisen. 18. Spurraddifferential according to claim 1, characterized in that the planetary gears (4, 5) in addition to a toothed portion having a portion without teeth.
PCT/EP2008/059160 2007-08-28 2008-07-14 Spur gear differential WO2009027146A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007040475.3A DE102007040475B4 (en) 2007-08-28 2007-08-28 Spur gear differential for a motor vehicle with disk-shaped, welded-on supports
DE102007040475.3 2007-08-28

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