WO2012052235A1 - Élément de changement de vitesses fonctionnant par complémentarité de forme - Google Patents

Élément de changement de vitesses fonctionnant par complémentarité de forme Download PDF

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Publication number
WO2012052235A1
WO2012052235A1 PCT/EP2011/066184 EP2011066184W WO2012052235A1 WO 2012052235 A1 WO2012052235 A1 WO 2012052235A1 EP 2011066184 W EP2011066184 W EP 2011066184W WO 2012052235 A1 WO2012052235 A1 WO 2012052235A1
Authority
WO
WIPO (PCT)
Prior art keywords
profile
sliding sleeve
idler gear
switching element
edge
Prior art date
Application number
PCT/EP2011/066184
Other languages
German (de)
English (en)
Inventor
Manuel Goetz
Christian Sibla
Detlef Baasch
Matthias Arzner
Johannes Winkler
Steffen Bertsch
Original Assignee
Zf Friedrichshafen Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zf Friedrichshafen Ag filed Critical Zf Friedrichshafen Ag
Publication of WO2012052235A1 publication Critical patent/WO2012052235A1/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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D11/00—Clutches in which the members have interengaging parts
    • F16D11/08—Clutches in which the members have interengaging parts actuated by moving a non-rotating part axially
    • F16D11/10—Clutches in which the members have interengaging parts actuated by moving a non-rotating part axially with clutching members movable only axially
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2400/00—Special features of vehicle units
    • B60Y2400/42—Clutches or brakes
    • B60Y2400/421—Dog type clutches or brakes
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D11/00—Clutches in which the members have interengaging parts
    • F16D2011/002—Clutches in which the members have interengaging parts using an external and axially slidable sleeve for coupling the teeth of both coupling components together
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D11/00—Clutches in which the members have interengaging parts
    • F16D2011/008—Clutches in which the members have interengaging parts characterised by the form of the teeth forming the inter-engaging parts; Details of shape or structure of these teeth
    • 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
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/04—Smoothing ratio shift
    • F16H2061/047—Smoothing ratio shift by preventing or solving a tooth butt situation upon engagement failure due to misalignment of teeth

Definitions

  • the present invention relates to a positive switching element for switching at least one gear ratio for a transmission of a vehicle according to the closer defined in the preamble of claim 1.
  • a tooth-on-tooth position can be resolved by applying a torque to the jaw switching element.
  • the applied torque serves to overcome the friction as a result of the frontal tooth-on-tooth contact in order to allow a relative movement and a subsequent sensing of the sliding sleeve.
  • This results in the problem that at too high torque unwanted high acceleration occurs and thus the meshing process can not be performed because of excessive differential speeds.
  • the present invention is based on the object to propose a form-fitting switching element, with the occurrence of a tooth-on-tooth position during the meshing is reliably prevented.
  • a positive switching element for a transmission such as for a manual transmission and for a partially or fully automated transmission
  • the switching element comprises at least one axially displaceable on a shaft, but rotatably connected sliding sleeve or the like, preferably from a non-switched Neutral position or from another, for example switched position in at least one further switched position is axially displaceable, in which a loose wheel with the shaft rotatably connected to switch a translation stage via corresponding profile contours, teeth or the like.
  • either the profile contour of the sliding sleeve or the profile contour of the idler gear has at least one axially extended profile flank or the like for pre-aligning the profile contours of the idler gear and the sliding sleeve to be engaged with each other, wherein the respective other profile contour of the idler gear or the Sliding sleeve has at least one substantially flattened in the axial direction or elastic profile edge or the like.
  • the profile contour of the sliding sleeve as Einspur silk at least one axially extended profile edge and according to the profile contour of the idler gear has at least one axially sprung profile edge
  • the axial length of each projecting profile edge of the sliding sleeve sized is that in the neutral position, a contact between the profile contour of the idler gear and the protruding or extended profile edge is reliably avoided.
  • the extended profile flank can also be referred to as a pilot tooth or the like, as this prepares quasi preparatory in an axial intermediate position of the sliding sleeve between the neutral position and the switched position an end-face contact with the elastic profile edges of the profile contour of the idler gear only if coincidentally a tooth-up Tooth position is present.
  • the extended profile flanks equal to a gap between adjacent profile edges of the profile contour of the idler gear, so that so that the correct alignment of a tooth-on-Lückeloid is set and the Einspurvorgang can be performed safely.
  • an axial or front-side contact results only between the extended profile flank and the associated profile flank of the profile contour of the loose wheel.
  • the number of, for example, evenly distributed over the circumference of the sliding sleeve arranged extended profile edges should be such that the number of provided pilot teeth or extended profile edges is sufficient to ensure entrainment between the idler gear and the sliding sleeve.
  • the tooth-on-tooth position between the intended extended profile flanks and the associated profile flanks of the profile contour of the idler gear is resolved by a relative movement between the sliding sleeve and the idler gear, in which the elongated profile edges engage in a space between the profile flanks of the idler gear.
  • the axial overlap between the pilot teeth or extended profile flanks and the associated profile flanks of the idler gear ensure the advance direction for avoiding tooth-on-tooth positions, so that with no relative rotation between the idler gear and the sliding sleeve in this position is more possible and the Einspurvorgang can be terminated by the sliding sleeve is moved axially into the switched position.
  • An advantageous embodiment of the invention may provide that the elasticity or the axial mobility of one or more profile edges of the profile contour of the idler gear by a resiliently trained element such.
  • a resiliently trained element such as B a spring element or the like, wherein the material can be chosen arbitrarily, provided that the elastic properties are given.
  • a spring plate with molded spring tabs or the like form can be used.
  • each z. B. guided profile edge be associated with a spring tab, so that the profile edge can be axially deflected when an extended profile edge of the sliding sleeve frontally impinges in a tooth-on-tooth position.
  • a next embodiment of the invention can be provided that is provided for the movable or elastic configuration of the profile edge of the idler gear that is used as a profile contour of the idler gear, a resilient member made of metal or plastic.
  • a particularly structurally simple possibility of the elastic configuration of the profile flank is realized, in which the component is made as elastic as possible and as stiff as possible in the circumferential direction for torque transmission.
  • Figure 1 is a sectional view of a positive switching element
  • Figure 2 is a developed in the drawing plane schematic side view of a loose wheel and a sliding sleeve of the switching element in a neutral position
  • FIG. 2A shows a schematic side view of a loose wheel and a sliding sleeve of the switching element in an axial intermediate position, which is developed into the plane of the drawing;
  • FIG. 2B shows a schematic side view of a loose wheel and a sliding sleeve of the shifting element in the axial intermediate position with partly infeed profile contour unwound in the plane of the drawing;
  • Figure 3 is a plan view of a spring plate for alternative embodiment of a springing of the profile contour of the idler gear
  • FIG. 3A shows a side view of the spring plate according to FIG. 3.
  • a positive switching element for a transmission of a vehicle is shown by way of example, wherein the invention is not limited to a specific embodiment of the positive switching element.
  • the switching element can be used in a manual transmission or in a partially or fully automated transmission, in particular a dual-clutch transmission to realize the insertion of gears or the switching of Gangradpresen.
  • the switching element comprises at least one axially displaceable on a shaft 1, but rotatably connected sliding sleeve 2, which is actuated by a Wegtorik not shown.
  • a shaft-fixed claw outer toothing 3 is provided, which is permanently engaged with a profiled contour 4 of the sliding sleeve 2 designed as a claw internal toothing, the sliding sleeve 2 being axially shifted from a neutral position A or a non-switched position via an intermediate position C into a switched position Position B can be moved to switch a translation stage.
  • the sliding sleeve 2 in the neutral position A and in the switched position B side by side schematically indicated, wherein the direction of movement from the neutral position A to the switched position B is indicated by an arrow.
  • a loose wheel 5 is shown, which is rotatably supported by a bearing 6 on the shaft 1.
  • the idler gear 5 is provided with an integrally formed coupling part, which extends axially in the direction of the sliding sleeve 2.
  • the coupling part has a profile contour 7 of the idler gear 5 a freewheel Klauenau touch- toothing, which is selected such that in the switched position B, the profile contour 4 of the sliding sleeve 2 at least partially overlaps with the profile contour 7 of the idler gear 5, so that the sliding sleeve 2 in the switched position B realized a rotationally fixed connection between the idler gear 5 and the shaft 1.
  • FIG. 1 also shows a section line l-1 to which the side views developed in the plane shown in FIGS. 2, 2A and 2B are related.
  • the switching element according to the invention is in the neutral position A and in Figures 2A and 2B, the axial intermediate position C is shown, in which the sliding sleeve 2 is axially between the neutral position A and the switched position B. From the intermediate position C, the sliding sleeve 2 can be moved by further axial displacement in the direction of the idler gear 5 in the switched position B.
  • the idler gear 5 of the switching element according to the invention comprises a toothing or profile contour 7, the teeth or profile flanks 8 are supported by an elastic member or spring element 9 in the axial direction sprung or sprung, so that at a contact with the teeth or profile flanks 10 of the toothing or the profile contour 4 of the sliding sleeve 2 an axial evasive movement is made possible by corresponding retraction of the profile flanks 8.
  • the Einspur silk at least one or more axially elongated profile edges 10A on the profile contour 4 of the sliding sleeve 2 for Pre-alignment of the profile contours 4, 7 of the sliding sleeve 2 and the loose wheel 5 to be engaged are provided.
  • FIGS. 2, 2A and 2B illustrate the sequence and mode of operation of the switching element according to the invention for dissolving a tooth-on-tooth position in three steps.
  • the switching element or the sliding sleeve 2 is in the neutral position A, which is shown in FIG.
  • the neutral position A with the shaft 1 rotatably connected profile contour 4 of the sliding sleeve 2 is not with the profile contour 7 of the idler gear 5 in contact.
  • the axial length of the extended profile edge 10A of the sliding sleeve 2 is selected accordingly.
  • Maximum every other profile edge 10 should be formed as an extended pilot tooth or as an extended profile edge 10A.
  • the extended profile flank 10A strikes a profile flank 8 of the idler gear 5.
  • the sprung profile flank 8 becomes due to the tooth-on-tooth position the idler gear 5 is pushed back in the axial direction in the direction of the idler gear 5.
  • the axial suspension of the profile edge 8 is chosen so that even in the fully inserted state of the profile edge 8 no tooth-on-tooth contact between the non-extended profile edges 10 of the sliding sleeve 2 and the other profile edges 8 of the idler gear 5 occurs.
  • the Einspurvorgang can be terminated by the sliding sleeve 2 is moved axially from the intermediate position C in the switched position B.
  • the switching element according to the invention for resolving a possibly existing tooth-on-tooth position only a defined further rotation in a tooth-on-gap position is performed mechanically.
  • the profile contours 4, 7 already partially Cushionspurt and can already transmit moment, so that in an advantageous manner uncontrolled spin-up in the resolution of a tooth-on-tooth position is avoided.
  • FIG 3 an alternative embodiment for the springing of the profile edges 8 of the idler wheel 5 is shown, in which the springing is carried out by an approximately circular or annular formed spring plate 1 1.
  • the spring plate 1 1 has a plurality of distributed over the inner circumference arranged spring tabs 12.
  • the spring tabs 12 are at a predetermined angle to the ground plane of the spring plate 1 1 and therefore provide in the axial direction a predetermined suspension or elasticity, so that in the installed state, the associated profile edge 8 of the idler gear 5 a corresponding axial spring travel having.
  • the spring tabs 12 themselves serve as toothing or profile flanks 8, it is provided that the spring tabs 12 are designed to be yielding in the axial direction and stiff in the circumferential direction.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mechanical Operated Clutches (AREA)
  • Gear-Shifting Mechanisms (AREA)

Abstract

L'invention concerne un élément de changement de vitesses fonctionnant par complémentarité de forme, servant à changer au moins un rapport de transmission pour une boîte de vitesses d'un véhicule, comportant au moins un manchon coulissant (2) pouvant coulisser axialement sur un arbre (1) mais solidaire en rotation de ce dernier, ledit manchon coulissant pouvant coulisser axialement à partir d'une position neutre (A), non engagée, dans au moins une position engagée (B), dans laquelle un pignon fou (5) est raccordé à l'arbre (1) de manière solidaire en rotation pour changer un rapport de transmission, par l'intermédiaire de contours profilés (4, 7) correspondants, l'un des contours profilés (4, 7) du manchon coulissant (2) ou du pignon fou (5) présentant, en tant qu'aide à l'engrènement, au moins un flanc profilé (10A) comportant un prolongement axial, servant à préaligner les contours profilés (4, 7) à engrener, l'autre contour profilé (4, 7) présentant au moins un flanc profilé élastique dans le sens axial.
PCT/EP2011/066184 2010-10-22 2011-09-19 Élément de changement de vitesses fonctionnant par complémentarité de forme WO2012052235A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010042799A DE102010042799A1 (de) 2010-10-22 2010-10-22 Formschlüssiges Schaltelement
DE102010042799.3 2010-10-22

Publications (1)

Publication Number Publication Date
WO2012052235A1 true WO2012052235A1 (fr) 2012-04-26

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2011/066184 WO2012052235A1 (fr) 2010-10-22 2011-09-19 Élément de changement de vitesses fonctionnant par complémentarité de forme

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DE (1) DE102010042799A1 (fr)
WO (1) WO2012052235A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012216988A1 (de) * 2012-09-21 2014-04-10 Zf Friedrichshafen Ag Klauenkupplung

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1040385B (de) * 1957-04-11 1958-10-02 Opel Adam Ag Vorrichtung zum Kuppeln zweier Teile durch Ineingriffbringen von axial verschiebbaren Kupplungszaehnen, insbesondere fuer Zahnraederwechsel-getriebe von Kraftfahrzeugen
GB2081822A (en) * 1980-07-31 1982-02-24 Honda Motor Co Ltd Positive Clutch
US20020112934A1 (en) * 2001-02-21 2002-08-22 Karambelas Randy C. Hub lock mechanism
DE10122450A1 (de) 2001-05-09 2002-11-14 Bayerische Motoren Werke Ag Schaltgetriebe für ein Motorrad
EP1624209A2 (fr) * 2004-08-04 2006-02-08 American Axle & Manufacturing, Inc. Embrayage positif comprennant des dents decalées en hauteur

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10228499A1 (de) * 2002-06-21 2004-01-22 Getrag Innovations Gmbh Schaltkupplung, Getriebe und Verfahren zum Steuern einer Schaltkupplung
DE202006008636U1 (de) * 2006-05-31 2006-08-31 Hoerbiger Antriebstechnik Gmbh Blech-Synchronring einer Synchronisiereinrichtung
DE102008023031B4 (de) * 2008-05-09 2011-01-05 Diehl Metall Stiftung & Co. Kg Blech-Synchronring

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1040385B (de) * 1957-04-11 1958-10-02 Opel Adam Ag Vorrichtung zum Kuppeln zweier Teile durch Ineingriffbringen von axial verschiebbaren Kupplungszaehnen, insbesondere fuer Zahnraederwechsel-getriebe von Kraftfahrzeugen
GB2081822A (en) * 1980-07-31 1982-02-24 Honda Motor Co Ltd Positive Clutch
US20020112934A1 (en) * 2001-02-21 2002-08-22 Karambelas Randy C. Hub lock mechanism
DE10122450A1 (de) 2001-05-09 2002-11-14 Bayerische Motoren Werke Ag Schaltgetriebe für ein Motorrad
EP1624209A2 (fr) * 2004-08-04 2006-02-08 American Axle & Manufacturing, Inc. Embrayage positif comprennant des dents decalées en hauteur

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Publication number Publication date
DE102010042799A1 (de) 2012-04-26

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