EP1523633A1 - Actionneur electromecanique de boite de vitesses - Google Patents

Actionneur electromecanique de boite de vitesses

Info

Publication number
EP1523633A1
EP1523633A1 EP03764999A EP03764999A EP1523633A1 EP 1523633 A1 EP1523633 A1 EP 1523633A1 EP 03764999 A EP03764999 A EP 03764999A EP 03764999 A EP03764999 A EP 03764999A EP 1523633 A1 EP1523633 A1 EP 1523633A1
Authority
EP
European Patent Office
Prior art keywords
selector
shaft
gear
electromechanical
electric motor
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP03764999A
Other languages
German (de)
English (en)
Inventor
Frank Miehle
Jürgen NEUENFELD
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZF Friedrichshafen AG
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 EP1523633A1 publication Critical patent/EP1523633A1/fr
Withdrawn legal-status Critical Current

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
    • 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
    • F16H61/26—Generation or transmission of movements for final actuating mechanisms
    • F16H61/28—Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted
    • F16H61/32—Electric motors actuators or related electrical control means therefor
    • 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
    • F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
    • F16H63/30—Constructional features of the final output mechanisms
    • F16H2063/3089—Spring assisted shift, e.g. springs for accumulating energy of shift movement and release it when clutch teeth are aligned

Definitions

  • the invention relates to an electromechanical transmission divider according to the preamble of claim 1.
  • Vehicles with automated manual transmissions have been on the market for a long time.
  • Preferred areas of application here are commercially used vehicles such as vans or trucks.
  • cars in sporting applications or small cars have been increasingly equipped with such gears.
  • the aim is to relieve the driver of changing gears in the vehicle and to enable a more comfortable and safe operation overall.
  • Vehicles with such transmissions usually have two pedals as an accelerator pedal and a brake.
  • the clutch pedal can be omitted.
  • a travel switch is available in the vehicle to select the operating mode. Here you can choose between automatic mode, manual shift mode and reverse gear. If the automatic mode is selected, the translation is adjusted automatically.
  • there are various solutions for the automation of manual transmissions There are different variants, such as pneumatic, hydraulic or purely electrical systems. Which variant is selected essentially depends on the vehicle class and the energy types available in these vehicles.
  • the power requirement of the actuators used is also an important parameter.
  • pneumatic or hydraulic cylinders or electric motors are used as actuators
  • Gearboxes drive the selector and switching devices. Actuators that are driven by electric motors are particularly inexpensive designs. For vehicle transmissions, it has long been a need to continue using an existing mechanical transmission that is shifted manually with an automatable, electromechanical transmission actuator. Electromechanical gear actuator for switching a
  • a gearbox is used which is either developed together with the gearbox actuator, or which has adaptation elements which must be provided on the gearbox for interacting with the gearbox actuator. So it shows
  • An electromechanical transmission actuator u includes a first drive device for exercising a selection movement of a selector and shift shaft in a transmission housing of a transmission of a motor vehicle with a first electric motor.
  • the transmission actuator further comprises a second drive device for executing a switching movement of the selector and switching shaft with a second electric motor.
  • An energy store is part of the second drive device and it is arranged on the selector and selector shaft.
  • the energy accumulator is arranged on the selector and selector shaft in such a way that it is axially displaceable with the selector and selector shaft and can be rotated relative to the selector and selector shaft.
  • the energy accumulator comprises a spring device which is arranged in a spring sleeve. The spring sleeve can be moved axially relative to the selector and selector shaft with simultaneous pretensioning of the spring device by the second drive device.
  • the spring sleeve has a toothing in which a toothing on the second electric motor of the second drive device engages in order to carry out the switching movement, this engagement taking place at least indirectly, that is to say does not have to take place directly.
  • One embodiment shows that a transmission is provided between the second electric motor of the second drive device and the spring sleeve.
  • An advantageous embodiment has a segment gear on the selector and selector shaft on the first drive device for exercising the selection movement, which is connected in a rotationally fixed manner to the selector and selector shaft.
  • the segment gear has a toothing in one
  • ⁇ engages teeth on the first electric motor of the first drive means for rotating the selector shaft and to exercise the selection movement at least indirectly, so the intervention does not have to take place immediately.
  • sensors are provided on the first and second electric motors or on the selector and selector shaft which detect the position of the selector and selector shaft.
  • the teeth are preferably worm gear teeth or spur gear teeth.
  • the energy accumulator can be detachably arranged on the selector and selector shaft.
  • the proposed electromechanical gear actuator makes it possible to tolerate narrow vehicle tunnel geometries with electric drive motors that are installed along the gear axis and to integrate a gear actuator in restricted space conditions, which relies on the energy-pressure accumulators and their elaborate ones that are otherwise required in electro-hydraulic gear actuators Line systems can do without.
  • the energy accumulator arranged on the selector and selector shaft ensures, with a simple and small space-consuming structure, that both the synchronizations provided in the transmission and the entire other drive train of the transmission actuator are protected. Such an energy store is not required for the dialing movements and can be omitted.
  • Figure 1 is a representation of a transmission with gear actuator.
  • Fig. 2 shows the arrangement of the gear actuator on the gear;
  • 3 shows a selector and selector shaft with an energy accumulator;
  • FIG. 4 shows a first different view of the energy accumulator and FIG. 5 shows a second different view of the energy accumulator.
  • a transmission 2 for a motor vehicle comprises a transmission housing 4, on the end of which a selector and selector shaft 8 protrudes opposite the clutch bell 6.
  • a gearwheel segment 10 is arranged in a rotationally fixed manner on this selector and selector shaft 8.
  • a toothing of the gearwheel segment 10 engages in a toothing, not shown here, on a motor shaft 12 of a first electric motor 14.
  • the first electric motor 14 exercises by rotating the dial and
  • a second electric motor 16 drives a gearwheel 20, which is mounted on an intermediate shaft 22, via a motor shaft 18.
  • the toothed wheel 20 engages with its toothing in addition to the motor shaft 18 also in a toothing on the selector and selector shaft 8, so that by actuating the second electric motor 16 the selector and selector shaft axially out of the transmission housing 4, or is moved into the gear housing 4.
  • the second electric motor 16 exerts the shifting movement on the shifting device of the transmission 2 by axially displacing the selector and shift shaft 2 via the gearwheel 20.
  • FIG. 2 shows the elements named for FIG. 1 from a different view from the rear part of the transmission 2.
  • the output shaft of gear 2 can be guided past the gear actuator without any problems.
  • FIG. 3 shows an embodiment of the gear actuator in a different view.
  • the gearwheel segment 10 arranged on the selector and selector shaft engages in the motor shaft 12 of the first electric motor 14.
  • the motor shaft 18 of the second electric motor 16 rotates the toothed wheel 20 via the intermediate shaft 22.
  • a toothing 26 on the toothed wheel 20 engages in a toothing 28 on a spring sleeve 30.
  • the spring sleeve 30 is detachably fastened at the end of the selector and switching shaft 8 with a screw connection 32, the selector and switching shaft 8 protruding into the spring sleeve 30 with a reduced diameter end 34 (FIGS. 4 and 5).
  • the screw 32 is slidably disposed within the spring sleeve 30.
  • a spiral spring 40 and 42 is arranged within the spring sleeve 30, in each of which a spiral spring 40 and 42 is arranged.
  • only one spiral spring can be arranged around the end 34 of the selector and switching shaft 8, into which webs in the spring sleeve 30 engage in a suitable manner such that the axial spring of the spring sleeve 30 relative to the selector and switching shaft 8 causes the spiral spring is brought under tension.
  • the spring sleeve 30 is moved relative to the end 34 and thus relative to the selector and selector shaft 8 via the toothing 26 on the gear wheel 20 in accordance with the movement arrow 44.
  • either the spiral spring 40 or 42 is pre-tensioned in the chamber 36 or 38, as long as in the transmission 2 there are no synchronous speeds of the components to be switched and the switching process cannot be completed.
  • the spring sleeve 30 slides on the end 34 of the selector and selector shaft 8 and thus also on the screw connection 32. If there are synchronous conditions in the transmission 2, the spiral spring 40 or 42 relaxes and moves the selector and selector shaft 8 via the spring force relative to Spring sleeve 30, so that the switching process is completed and the gear is engaged.
  • the movement of the spring sleeve either in one direction or the other in accordance with the movement arrow 44 corresponds to the shifting of the two gears in a shift gate.
  • the spring sleeve 30, which acts as an energy store 24, with the spiral springs 40 and 42 offers a very space-saving arrangement on the transmission 2.

Landscapes

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

Abstract

L'invention concerne un actionneur électromécanique de boîte de vitesses, qui comprend un premier dispositif d'entraînement (10, 12, 14) servant à exercer, à l'aide d'un premier moteur électrique (14), un mouvement de sélection d'un arbre de sélection et de commande de vitesses (8) dans un carter (4) d'une boîte de vitesses (2) d'un véhicule automobile. L'actionneur électromécanique selon l'invention comprend également un deuxième dispositif d'entraînement (16, 18, 20) servant à exercer un mouvement de commande des vitesses de l'arbre de sélection et de commande de vitesses (8) à l'aide d'un deuxième moteur électrique (16). Un accumulateur d'énergie (24) est placé sur l'arbre de sélection et de commande de vitesses (8).
EP03764999A 2002-07-19 2003-07-16 Actionneur electromecanique de boite de vitesses Withdrawn EP1523633A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE2002132873 DE10232873A1 (de) 2002-07-19 2002-07-19 Elektromechanischer Getriebesteller
DE10232873 2002-07-19
PCT/EP2003/007706 WO2004010032A1 (fr) 2002-07-19 2003-07-16 Actionneur electromecanique de boite de vitesses

Publications (1)

Publication Number Publication Date
EP1523633A1 true EP1523633A1 (fr) 2005-04-20

Family

ID=29796457

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03764999A Withdrawn EP1523633A1 (fr) 2002-07-19 2003-07-16 Actionneur electromecanique de boite de vitesses

Country Status (3)

Country Link
EP (1) EP1523633A1 (fr)
DE (1) DE10232873A1 (fr)
WO (1) WO2004010032A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2878926B1 (fr) 2004-12-08 2008-07-11 Renault Sas Dispositif de commande du changement de rapport d'une boite de vitesses
DE102007032973B4 (de) * 2007-07-16 2009-10-08 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Y-förmige Kühlrippenanordnung
KR101185813B1 (ko) * 2010-01-06 2012-10-02 동환산업 주식회사 수동변속기 장착용 자동변속장치
FR3026808B1 (fr) * 2014-10-06 2016-10-21 Renault Sa Dispositif de commande interne de boite de vitesses avec aide au passage integree
DE102016006751A1 (de) 2016-06-06 2017-12-07 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Betätigungseinheit für ein Schaltgetriebe eines schaltbaren Antriebsstranges
DE102016214342A1 (de) * 2016-08-03 2018-02-08 Zf Friedrichshafen Ag Getriebeaktuator sowie Kraftfahrzeug

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2207715B (en) * 1987-07-28 1991-10-09 Gaydon Techn Ltd Vehicle transmissions
DE19713423C5 (de) * 1996-04-03 2015-11-26 Schaeffler Technologies AG & Co. KG Vorrichtung und Verfahren zur Betätigung eines Getriebes
FR2774448B1 (fr) * 1998-02-03 2006-08-18 Luk Getriebe Systeme Gmbh Vehicule a moteur
DE10113982A1 (de) * 2000-03-28 2001-10-04 Luk Lamellen & Kupplungsbau Kraftfahrzeug mit Getriebe
DE10058364B4 (de) * 2000-11-24 2008-01-31 Zf Sachs Ag Stelleinrichtung für die automatisierte Betätigung einer Schaltgetriebeanordnung sowie Antriebssystem
DE10143325A1 (de) 2001-09-05 2003-03-20 Zahnradfabrik Friedrichshafen Getriebe mit elektromechanischen Getriebesteller

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2004010032A1 *

Also Published As

Publication number Publication date
DE10232873A1 (de) 2004-01-29
WO2004010032A1 (fr) 2004-01-29

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