WO2010009698A1 - Dispositif d’entraînement pour une transmission à variation continue d’un véhicule à moteur - Google Patents

Dispositif d’entraînement pour une transmission à variation continue d’un véhicule à moteur Download PDF

Info

Publication number
WO2010009698A1
WO2010009698A1 PCT/DE2009/000939 DE2009000939W WO2010009698A1 WO 2010009698 A1 WO2010009698 A1 WO 2010009698A1 DE 2009000939 W DE2009000939 W DE 2009000939W WO 2010009698 A1 WO2010009698 A1 WO 2010009698A1
Authority
WO
WIPO (PCT)
Prior art keywords
drive shaft
drive
eccentric
shaft
rotation
Prior art date
Application number
PCT/DE2009/000939
Other languages
German (de)
English (en)
Inventor
Bernhard Walter
Dirk Hofstetter
Original Assignee
Luk Lamellen Und Kupplungsbau Beteiligungs 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 Luk Lamellen Und Kupplungsbau Beteiligungs Kg filed Critical Luk Lamellen Und Kupplungsbau Beteiligungs Kg
Priority to DE112009002336T priority Critical patent/DE112009002336A5/de
Publication of WO2010009698A1 publication Critical patent/WO2010009698A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H29/00—Gearings for conveying rotary motion with intermittently-driving members, e.g. with freewheel action
    • F16H29/02—Gearings for conveying rotary motion with intermittently-driving members, e.g. with freewheel action between one of the shafts and an oscillating or reciprocating intermediate member, not rotating with either of the shafts
    • F16H29/04—Gearings for conveying rotary motion with intermittently-driving members, e.g. with freewheel action between one of the shafts and an oscillating or reciprocating intermediate member, not rotating with either of the shafts in which the transmission ratio is changed by adjustment of a crank, an eccentric, a wobble-plate, or a cam, on one of the shafts

Definitions

  • the present invention relates to a drive arrangement for a continuously variable transmission, in particular for a crank CVT of a motor vehicle.
  • From DE 102 43 535 A1 discloses a continuously variable transmission of a motor vehicle, which essentially comprises a drive shaft and an output shaft, which are aligned parallel to each other rotatably mounted in a transmission housing.
  • these two shafts are connected to one another via an eccentric device provided on the drive shaft and a freewheel device arranged on the output shaft.
  • the eccentric consists of a plurality of eccentric units, which are arranged axially next to one another on the drive shaft.
  • the freewheel device consists of several freewheel units, which are arranged axially adjacent to one another on the drive shaft.
  • the drive shaft has a guide area offset eccentrically with respect to its axis of rotation, on the lateral surface of which an eccentric component is rotatably mounted.
  • the one side of at least one connecting rod is rotatably mounted in the configuration of the continuously variable transmission as a crank CVT (Continuous Variable Transmission).
  • Each eccentric component has a recess for receiving a guide region of the drive shaft, wherein an internal toothing extends around the recess.
  • the internal toothing is matched to the lateral surface of the guide region in such a way that the eccentric component is centered over the internal toothing on the guide region.
  • the drive shaft or the guide areas of the same have a recess extending in the direction of the axis of rotation of the drive shaft, in which an adjustment shaft is rotatably arranged.
  • the adjusting shaft has an outer toothing, which engages in the internal toothing of the eccentric components.
  • the adjusting shaft is mounted in the recess of the driving shaft via the sections of the external toothing forming the tip circle of the external toothing.
  • the guide areas are designed so crescent-shaped that their recesses are open over a certain angular range, so that in these angular ranges, the external toothing of the adjusting against the outer maneuvering tel specifications the guide portions can protrude radially, with engagement in the internal teeth of the Exzenterbaumaschinemaschines is possible.
  • the disk-like guide areas have with respect to their cylindrical surface a center line which is arranged eccentrically by a certain distance from the axis of rotation of the drive shaft.
  • the eccentric members have, with respect to their cylindrical surfaces, a centerline which is eccentrically offset from said centerline of the guide portions by a distance such that the eccentricity of the centerline of the eccentric members with respect to the axis of rotation of the drive shaft is twice as large as the eccentricity of the centerline of the actuator Guide areas opposite this axis of rotation.
  • the eccentric component of an eccentric unit Due to the rotation of the adjusting shaft in the recess of the drive shaft, the eccentric component of an eccentric unit is rotated about the center line of the corresponding guide region.
  • the center line of the Exzenterbauerss moves around the center line of the guide portion, wherein the extent of the eccentricity of the Exzenterbauerss is changed with respect to the axis of rotation of the driving shaft.
  • the adjusting is usually inserted in the known stepless crank CVT's without storage and with little play in the drive shaft.
  • a problem is that the flexible drive shaft is supported under load on the adjusting shaft, whereby an increased adjusting torque arises, which is due to a metallic friction when clamping the adjusting shaft in the axial recess of the driving shaft. Since the adjusting torque is increased, this leads to an increased power requirement on the side of the adjusting shaft rotating when adjusting electric drive.
  • a deflection of the flexurally soft drive shaft can be minimized according to a patent application of the same date of the present patent applicant that are provided axially spaced axially between the outer bearing points of the drive shaft at the mounted with their outer sides in a gear housing drive shaft axially spaced, cylindrical stiffening regions, wherein the cylindrical inner surfaces of these central stiffening regions are supported on rolling bodies, which are arranged in circumferential grooves of the adjusting shaft.
  • the object of the present invention is to design a drive arrangement for a continuously variable transmission of a motor vehicle in such a way that a deflection of the drive shaft can be largely reduced or avoided.
  • a drive arrangement for a continuously variable transmission in particular a crank CVT of a motor vehicle, which has a drive shaft, at whose end regions outer bearings are arranged for rotatably supporting the drive shaft in a transmission housing.
  • the drive shaft has a recess in which an adjusting shaft is rotatably arranged, in the rotation of the Exzenterbaumaschine an arranged on the drive shaft eccentric are continuously adjustable.
  • the drive shaft has in its region between the outer bearings at least one rotatably connected to it, cylindrical bearing disc, on the outer surface of another bearing for supporting the drive axle is arranged in the transmission housing.
  • the essential advantage of the drive arrangement according to the invention is that a storage of the drive shaft that is favorable in terms of the claimed installation space and the weight, strength and rigidity is made possible by the provision of a further central bearing point, in addition to the outer bearing points.
  • the drive axle On both sides of the bearing disc, which is preferably arranged centrally between the outer bearings, the drive axle may have one, but preferably a plurality of mutually spaced in the direction of its axis of rotation stiffening regions, which advantageously contribute to increase the flexural rigidity of the drive shaft.
  • the drive shaft to achieve a particularly effective storage in their area between the outer bearings on several, each rotatably connected to it, cylindrical bearing discs, which are spaced apart in the direction of the axis of rotation of the drive shaft.
  • the drive shaft of the drive assembly may have in the direction of its axis of rotation a plurality of spaced apart stiffening regions, wherein at least one stiffening region serves as a bearing disk.
  • the drive shaft of the present drive arrangement may be part of a crank CVT, wherein the rotation of the drive shaft via an eccentric device arranged on the drive shaft and connecting rods to a freewheel device of a in the transmission housing para - A - is transmitted rallel stored to the drive shaft output shaft.
  • the eccentric comprises on the drive shaft in the axial direction spaced eccentric components on the drive shaft either between the bearing disc and the outer bearings or on the drive shaft between bearing discs and / or between an outer bearing and an adjacent bearing disc or on the drive shaft between stiffening areas , and / or are arranged between a stiffening region and a bearing disk and / or between an outer bearing and an adjacent stiffening region.
  • FIG. 1 shows a longitudinal section of a drive shaft of the drive assembly according to the invention
  • FIG. 2 is a perspective view of the arrangement of FIG. 1.
  • a possible bending-free, space-saving and easy arrangement of the drive shaft in a transmission housing can be achieved by departing from the usual structure of the drive shaft with the juxtaposed eccentric and in addition to the outer bearings, in which the outer sides of the drive shaft with respect to the Gear housing are mounted, at least one further bearing point in the central region of the drive shaft is provided for their additional support or support with respect to the transmission housing.
  • the drive shaft of a continuously variable transmission is designated 1.
  • an adjusting shaft (not shown) is arranged in a conventional manner.
  • the outer end portions of the drive shaft 1 are rotatably mounted in a transmission housing 4 with the aid of bearings 6 and 7, as shown schematically.
  • the drive shaft 1 preferably has the stiffening regions 3 already mentioned above, which are arranged in the axial direction of the drive shaft 1 spaced apart between the bearings 6 and 7 and contribute to increasing the rigidity of the drive shaft 1.
  • the stiffening areas 3 each have the form of cylindrical circular disks, which are arranged concentrically to the axis of rotation 8 of the drive shaft 1. It is pointed out have shown that stiffening areas 3 can be provided in different numbers. An embodiment of the invention without stiffening regions 3 is also conceivable.
  • a bearing disk 5 rotatably connected or formed with the drive axle 1, which serves for additional storage of the drive axle 1 with respect to the transmission housing 4.
  • the bearing disk 5 has the shape of a cylindrical circular disc, which are arranged concentrically to the axis of rotation 8 of the drive shaft 1.
  • the bearing 9 shown schematically is arranged on the outer surface of the bearing disc 5. It should be noted that a plurality of bearing discs 5 may be provided for additional support in the area between the bearings 6 and 7. It is also conceivable, according to an embodiment of the invention, to use the cylindrical outer surfaces of the reinforcing regions 3 to form additional bearing points.
  • the eccentric components 2 connected with connecting rods can be arranged in the apparent manner between the bearing disk 5, the stiffening regions 3 and the bearings 6, 7.

Abstract

L’invention concerne un dispositif d’entraînement pour une transmission à variation continue, en particulier un mécanisme de transmission à manivelle à variation continue d’un véhicule à moteur, avec un arbre d’entraînement (1) dans les régions d’extrémité duquel des paliers extérieurs (6, 7) sont disposés pour le montage à rotation de l’arbre d’entraînement par rapport à un carter de transmission, l’arbre d’entraînement présentant un évidement dans lequel un arbre de réglage peut être disposé à rotation. Lors de la rotation de l’arbre de réglage, des composants d’excentrique (2) d’un mécanisme excentrique disposés sur l’arbre d’entraînement sont ajustés en continu. L’arbre d’entraînement présente, dans sa région entre les paliers extérieurs, au moins un disque de palier cylindrique (5), relié de manière solidaire en rotation à l’arbre d’entraînement, sur la surface extérieur duquel un autre palier est disposé pour supporter l’axe d’entraînement par rapport au carter de transmission.
PCT/DE2009/000939 2008-07-21 2009-07-06 Dispositif d’entraînement pour une transmission à variation continue d’un véhicule à moteur WO2010009698A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112009002336T DE112009002336A5 (de) 2008-07-21 2009-07-06 Antriebsanordnung für ein stufenlos verstellbares Getriebe eines Kraftfahrzeuges

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008033969.5 2008-07-21
DE102008033969 2008-07-21

Publications (1)

Publication Number Publication Date
WO2010009698A1 true WO2010009698A1 (fr) 2010-01-28

Family

ID=41181032

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2009/000939 WO2010009698A1 (fr) 2008-07-21 2009-07-06 Dispositif d’entraînement pour une transmission à variation continue d’un véhicule à moteur

Country Status (2)

Country Link
DE (2) DE102009031794A1 (fr)
WO (1) WO2010009698A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5189927A (en) * 1988-11-08 1993-03-02 Egan Michael J Variable ratio drive transmission
DE10243535A1 (de) * 2001-09-26 2003-04-24 Luk Lamellen & Kupplungsbau Getriebe
US20060157004A1 (en) * 2005-01-18 2006-07-20 Honda Motor Co., Ltd. Engine for motorcycle

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5189927A (en) * 1988-11-08 1993-03-02 Egan Michael J Variable ratio drive transmission
DE10243535A1 (de) * 2001-09-26 2003-04-24 Luk Lamellen & Kupplungsbau Getriebe
US20060157004A1 (en) * 2005-01-18 2006-07-20 Honda Motor Co., Ltd. Engine for motorcycle

Also Published As

Publication number Publication date
DE112009002336A5 (de) 2011-06-30
DE102009031794A1 (de) 2010-01-28

Similar Documents

Publication Publication Date Title
EP0602491B1 (fr) Installation de transmission et de compression
EP2132458B1 (fr) Transmission coaxiale, en particulier transmission a arbre creux, destinee à l'entrainement industriel
WO2010043193A1 (fr) Agencement d'arbre de commande pour une transmission d'un véhicule à moteur
WO2011072707A1 (fr) Transmission
WO2017041802A1 (fr) Engrenage à roue dentée élastique
DE102012010316A1 (de) Reibrollenplanetengetriebe sowie Übersetzungs- und Ausgleichsgetriebe
DE3427577A1 (de) Ausgleichsgetriebe fuer kraftfahrzeuge
DE102014105924A1 (de) Planetenradträger
DE19931818A1 (de) Mehrstufiges Stirnradgetriebe
DE102006005906A1 (de) Getriebestufe
DE102016119366A1 (de) Lenksystem
DE102016122644A1 (de) Lenkgetriebe und Lenksystem
EP2255104B1 (fr) Boite de vitesses
DE102016119367A1 (de) Lenksystem
DE102019119696A1 (de) Antriebsstrang
WO2010009697A1 (fr) Dispositif d’entraînement pour une transmission à variation continue d’un véhicule à moteur
DE3526273C2 (de) Laschenkupplung
EP1819942B1 (fr) Transmission
DE102020126114A1 (de) Koaxialgetriebe
EP3768994A1 (fr) Engrenage planétaire pourvu d'un pignon planétaire à une dent ayant une denture évoloïde
DE102008036743A1 (de) Getriebe mit Slots
DE102004058551A1 (de) Getriebe
DE102016204982A1 (de) Fahrzeuggetriebe
DE102011103495A1 (de) Kupplungswelle,Aktor,Nockenwellenverstellgetriebe und Nockenwellensteller
WO2006066813A1 (fr) Dispositif, notamment engrenage planetaire, comprenant un corps de base en anneau

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 09775934

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 1120090023363

Country of ref document: DE

REG Reference to national code

Ref country code: DE

Ref legal event code: R225

Ref document number: 112009002336

Country of ref document: DE

Effective date: 20110630

122 Ep: pct application non-entry in european phase

Ref document number: 09775934

Country of ref document: EP

Kind code of ref document: A1