WO1999056040A1 - Actionneur electromecanique pour boite de vitesses mecanique - Google Patents
Actionneur electromecanique pour boite de vitesses mecanique Download PDFInfo
- Publication number
- WO1999056040A1 WO1999056040A1 PCT/FR1999/001008 FR9901008W WO9956040A1 WO 1999056040 A1 WO1999056040 A1 WO 1999056040A1 FR 9901008 W FR9901008 W FR 9901008W WO 9956040 A1 WO9956040 A1 WO 9956040A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- motor
- pinion
- gear
- selection
- coupled
- Prior art date
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
- 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
- F16H2061/2884—Screw-nut devices
-
- 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 present invention relates to an electromechanical actuator for a mechanical gearbox, in particular for a motor vehicle, intended to provide automatic controls for the selection and shifting of gears, of the type comprising at least one motor unit with gearmotor capable of supplying mechanical energy. necessary for said orders.
- selection (of a speed) is meant to designate the maneuver corresponding to a horizontal movement of the gear lever on the grid, of speeds, while by the expression “passage” is meant to designate the maneuver corresponding to a vertical displacement of this lever, for the engagement of the chosen speed.
- This vertical passage, ascending or descending, is generally accompanied by the actuation of the synchronization locks and therefore requires a certain expenditure of energy, also necessary, although to a lesser degree, for the selection maneuvers.
- the invention aims to establish an electromechanical actuator of the kind in question which is relatively simple and inexpensive while having the desired reliability and which can be installed as standard on new vehicles, or be installed afterwards on vehicles already equipped with a manual gear lever engagement control with conventional lever, without requiring a modification of the existing control.
- the object of the present invention is more particularly to optimize the sequencing of the movements by helping with a preselection, and also to help the driver to overcome the efforts required by the operation of the synchronization locks during gear change. It is also necessary to ensure that the end of the selection as well as the end of the shifting can be detected automatically in order to automatically stop the motor unit with gearmotor when the engagement of the desired speed is completed.
- an electromechanical actuator of the type defined at the beginning, is characterized in that this motor unit is associated on the one hand with an elastic system for storing its mechanical energy, this system being adapted to restore this energy of the power unit for selectively ensuring said automatic commands via a wheelhouse, respectively of selection or passage, and on the other hand to a limit switch suitable for causing the appearance of a signal representative, as the case may be, of the compressed state (energy storage) of said elastic system, of the abutment of said drive unit, and of the fact that the selection or engagement of the desired ratio of the box has been obtained.
- the motor unit with gearmotor can provide the energy required to operate the controls at lower power, by progressive storage of energy in the elastic system before rapid expansion. This energy will only be released when the power is sufficient to produce the frank engagement of the selected speed, without requiring a momentary increase in the power of the motor unit, and without causing it to slow down.
- the elastic system will thus allow better control of the selection efforts as well as the synchronization efforts when shifting gears, possibly in cooperation with a position sensor of the drive unit, the drive unit with gearmotor not having to be servo-controlled in effort, but only in position; the elastic system automatically standardizes the forces required from the drive unit.
- the motor unit also does not have to stop when it encounters the synchronization resistance, which saves time.
- the limit switch will provide the drive unit with abutment information, which allows the learning of the grid, either during the selection or when changing a gear, which will indicate the execution of this displacement, that is to say that the report has been engaged, or will also give the indication that the elastic system has stored energy, during the preselection or just before shifting speed.
- the limit switch will also provide information on the position of the synchronization and therefore on the wear of the synchronization locks.
- the invention can be implemented, in a manner known per se, with two motor units with gearmotor, one for the automatic control of said selections, the other for the automatic control of said passages, these two motor units with gearmotor being each controlled by a separate power module.
- the invention can also be implemented with a single power unit selectively controlling one or the other of the two wheelhouses.
- a single motor unit controlled by a single power module is used, this motor unit being able to be coupled to one or the other of two reducers by a mechanical switch, one of these reducers being adapted to ensure the control of the gear selection and the other to ensure their passage, via their respective wheelhouses.
- the present invention also relates, more specifically, on the one hand to the production of the mechanical switch, when the latter is necessary (in the case of a single drive unit), on the other hand to the production of the elastic storage system d mechanical energy (case of one or two motor units).
- an electromechanical actuator can also be characterized in that said mechanical switch comprises an electromagnet controlled, as well as an electric motor, by a power module, said motor comprising, wedged on its shaft, a pinion of sliding outlet, and said electromagnet being associated with a fixed rotation control pinion, axially connected to said output pinion and suitable for selectively occupying two axially offset positions, namely a position for which it brings said output pinion of the motor into engagement with a first reduction pinion coupled to a gearbox selection linkage, and a position for which it brings said motor output pinion into engagement with a second reduction pinion coupled to a linkage of passage of said box, said first reduction pinion being then blocked in rotation.
- said mechanical switch comprises an electromagnet controlled, as well as an electric motor, by a power module, said motor comprising, wedged on its shaft, a pinion of sliding outlet, and said electromagnet being associated with a fixed rotation control pinion, axially connected to said output pinion and suitable for selectively occupying two axially
- this electromechanical actuator could be characterized in that said mechanical switch comprises an electromagnet controlled, as well as an electric motor, by a power module, said motor comprising, wedged on its shaft, an output pinion constituting the planetary of a planetary reduction gear train, and said electromagnet being associated with a control pinion which is fixed in rotation and capable of selectively occupying two axially offset positions, namely a position for which it locks in rotation a first coupled pinion to the outer ring gear of said train, in which case the planet carrier can drive the gear shift control linkage with a first reduction gear, and a position for which it locks in rotation of a second pinion coupled to said planet carrier, in which case said outer gear ring can cause the gear selection wheelhouse with a second reduction ratio, the non-driven wheelhouse being blocked each time.
- said mechanical switch comprises an electromagnet controlled, as well as an electric motor, by a power module, said motor comprising, wedged on its shaft, an output pinion constituting the planetary of a planetary reduction gear train, and said
- the elastic mechanical energy storage system can also be implemented in different ways.
- it may comprise at least two pivoting plates connected to one another by a spring, the first being coupled to the output shaft of an electric motor, the second to a driven shaft coupled to a selection or passage control linkage, said other plate thus being able to occupy two angularly offset positions, namely a position locked by said linkage, for which said spring stores energy due to the rotation of said output shaft , and an active position at the passage of which the relaxation of said spring causes the operation of said linkage, the arrival in this active position causing one actuation of said limit switch.
- said electric motor is constituted by a worm gear motor in engagement with a toothed sector of said first plate.
- said elastic system comprises on the one hand a cage mounted to slide on an electric motor casing and coupled to a shift or selection control linkage, and on the other hand to a core mounted to slide relative to said cage, coupled to the output shaft of said motor and connected to the cage by one or more springs, said cage thus being able to occupy two axially offset positions, namely a position locked by said linkage, for which the said spring or springs store energy due to the rotation of said output shaft, and an active position when passing which the relaxation of said spring or springs causes the operation of said wheelhouse, the arrival in this active position causing one actuation of said limit switch.
- said electric motor is constituted by a geared motor with ball screws or trapezoidal threads engaged with a helical housing of said core.
- an angular position sensor of the drive unit is associated with said output shaft of the electric motor or with a member driven after reduction.
- FIG. 1 is a block diagram showing an electromechanical actuator according to the invention, for a mechanical gearbox showing the implementation of a power unit for controlling the selection of gears or their passage;
- FIG. 2 is a block diagram showing an electromechanical actuator according to the invention, for mechanical gearbox showing the implementation of a single drive unit for the successive control of the selection of speeds and their passage;
- FIG. 3 shows in schematic axial section a mechanical switch usable in the case of Figure 2;
- FIG. 4 schematically shows another mechanical switch usable in the case of Figure 2;
- FIG. 5 shows in axial section through the line V- V of Figure 6 an elastic system of mechanical energy storage usable in the case of Figures 1 and 2;
- the wheelhouse 1 of externally controlled gear selection 6 is driven by a power unit comprising a power module 2 supplying a DC motor with controlled current 3, which drives the wheelhouse 1 via a reduction gearbox movement 4 (or speed reducer) and of an elastic mechanical energy storage system 5.
- the assemblies 3, 4, 5 will be described below.
- a diagram F f (X) expressing the fact that the system comprises an energy storage spring, in principle prestressed, which is compressed progressively under the effect of 1 drive of the geared motor 3-4 and which can suddenly relax to restore the energy stored in a very short time and thus very quickly activate the wheelhouse 1, this making it possible to have only a motor 3 of limited power, less than the power required by actuation of the wheelhouse.
- the mechanical switch 9 can be controlled by an electromagnet (as will be seen below) or by an electric micromotor. If the movement transformation of the selection is not irreversible, the mechanical switch will have to perform this function: the motor will activate the gearshift control, the gear selection will have to be immobilized (energy of the preselection stored in the elastic system d 'energy storage).
- FIG. 3 there is shown diagrammatically in FIG. 3 a mechanical switch 9 suitable for coupling the output shaft 10 of the DC motor 3, ie to the shaft 11 for controlling the selector wheelhouse ls (via '' an elastic system 5s not shown in this figure), or to the shaft 12 for controlling the wheelhouse passage lp (likewise by means of an elastic system 5p not shown in this figure).
- an axially sliding pinion 13 keyed onto the shaft 10 has been mounted on the shaft 10 so as to be integral therewith in rotation.
- This output pinion 13 is engaged with a control pinion 14 capable of sliding axially parallel to the axis of the motor shaft 10, but locked in rotation by a fixed tooth 15 engaged in axial sliding in an external groove 14 " the pinion 14, which is connected to the movable core 16 of a fixed electromagnet 17 by a return spring 18.
- the electromagnet 17 When switching from the shift control to the gear selection control, the electromagnet 17 is activated and moves the core 16 to the right of the drawing, which, by means of the control pinion 14, makes it slide. the output pinion 13 on one shaft 10 and engages it with the reduction pinion 20, the reduction pinion 19 then being released.
- FIG. 4 there is shown the possible use of a planetary reduction gear train to switch the output pinion 13 'of the DC electric motor 3 or on the reduction pinion 19 connected by l 'shaft 12 to the gearshift linkage lp, or on the reduction pinion 20 connected by the shaft 11 to the selection wheelhouse ls.
- This planetary gear train has the output pinion 13 'as 10 planetary, and a set of satellites carried by a planet carrier 23 and meshed on the one hand with the output pinion 13 ', on the other hand with an external ring gear
- the pinion 21 or the pinion 24 can be locked in rotation by a control pinion 14 'locked in rotation by a fixed tooth 15 (as in FIG. 3) and which can slide axially thanks to the electromagnet 16, 17 with spring return 18, between two positions: in the position shown in Figure 4 the control gear
- control pinion 14 when the control pinion 14 'is moved to the right by the electromagnet 16, 17, when the latter is activated, it occupies the position shown in dotted lines for which it blocks the rotation of the second pinion 24, which at the same time blocks the rotation of the reduction pinion 19 of the passing linkage as well as that of the planet carrier 23.
- the outer ring gear 22 is then driven in rotation, as well as the first pinion 21, which drives the selection wheelhouse by 1 through the reduction pinion 20.
- FIGS. 5 and 6 show a first possible embodiment of an elastic system for storing the energy of a geared motor 3 controlled by its power module 2.
- the worm shaft 10 'of this geared motor is engaged with a toothed sector 25' of a first plate in the form of a circular sector 25, which can pivot on a tip of an axis 27 also serving as an axis of rotation to another plate in the form of a sector of a circle 26 of which it is 11 joined together.
- a precompressed spring 30 is formed at each of its ends. At one of its ends this spring is held in place by two vertical tabs of the plate 25, while at its other end it is held in place by two horizontal tabs of the plate 26.
- the spring 30 does not risk being subjected to tilting forces.
- the power module 2 can control via the motor 3 the return of the plates 25 and 26 from their respective initial positions.
- an elastic system including in the same casing 34, mounted at one end on an axis 35, the geared motor 3, its power module 2 as well as the elastic system proper, also referenced at 9.
- This elastic system comprises a cage 36 slidingly mounted on the casing 34 of the electric motor and coupled by the link 37 to a gearbox for selecting or shifting gear, here shown diagrammatically at 38.
- a core 39 is slidably mounted in this cage 36 and is engaged by a central helical housing 40 on the shaft, for example with a 10 "ball screw, of the geared motor 3.
- Opposite housings 41 of the cage 36 and 42 of the core 39 contain a set of precompressed springs 43.
- a limit switch 7 is arranged on the cage 36 to be operated by the arrival at the end of stroke of the core 39, and a position sensor of the actuator shown diagrammatically at 8 is associated to the 10 "shaft of the gearmotor.
- the rotation of the shaft 10 "causes the axial displacement of the core 39 by compressing the springs 43 as long as the resistance presented on the link 37 by the linkage 38 prevents the axial displacement of the cage 36.
- the linkage resistance becomes less than the force exerted by the springs 43 on the link 37, the springs suddenly relax, which maneuvers the wheelhouse 38 and controls the operation of the switch 7 at the end of the stroke.
- power 2 of the gear motor 3 can control the return of the cage 36 and the core 39 to their initial positions.
- the classic gear lever can also be 13 replaced by a multidirectional lever actuating electrical contacts, of the so-called “joy stick” type.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Structure Of Transmissions (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19980838T DE19980838B4 (de) | 1998-04-28 | 1999-04-28 | Elektromechanische Steuereinrichtung für ein mechanisches Schaltgetriebe |
EP99915859A EP0990098B1 (fr) | 1998-04-28 | 1999-04-28 | Actionneur electromecanique pour boite de vitesses mecanique |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR98/05309 | 1998-04-28 | ||
FR9805309A FR2777834B1 (fr) | 1998-04-28 | 1998-04-28 | Actionneur electromecanique pour boite de vitesse |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999056040A1 true WO1999056040A1 (fr) | 1999-11-04 |
Family
ID=9525750
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR1999/001008 WO1999056040A1 (fr) | 1998-04-28 | 1999-04-28 | Actionneur electromecanique pour boite de vitesses mecanique |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0990098B1 (fr) |
DE (1) | DE19980838B4 (fr) |
FR (1) | FR2777834B1 (fr) |
WO (1) | WO1999056040A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2835030A1 (fr) * | 2002-01-22 | 2003-07-25 | Valeo | Procede et dispositif de commande du passage des vitesses dans une boite de vitesses de vehicule automobile |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2795831B1 (fr) * | 1999-06-30 | 2001-10-12 | Valeo | Actionneur electromecanique a effort controle et application notamment a la commande d'une boite de vitesses par exemple de vehicule automobile |
FR2813935B1 (fr) | 2000-09-08 | 2002-11-29 | Renault | Boite de vitesses a actionneur de passage |
FR2820484B1 (fr) | 2001-02-02 | 2003-04-04 | Renault | Boite de vitesses mecanique a actionneurs de passage et dispositif de couplage correspondant |
FR2823823B1 (fr) * | 2001-04-24 | 2003-05-23 | Valeo | Procede d'actionnement et actionneur pour la commande du passage des vitesses d'une boite de vitesses de vehicule automobile |
FR2833331B1 (fr) | 2001-12-07 | 2004-05-14 | Renault | Boite de vitesses automatisee a passages sous couple |
EP1427213A1 (fr) | 2002-12-06 | 2004-06-09 | Thomson Licensing S.A. | Procédé d'enregistrement de données, procédé pour la localisation d'ensembles de données, structure de données et support d'enregistrement |
FR2861153B1 (fr) * | 2004-11-17 | 2006-04-28 | Valeo Embrayages | Ensemble de commande pour boite de vitesses robotisee. |
FR2861152B1 (fr) * | 2004-11-17 | 2008-10-10 | Valeo Embrayages | Ensemble de commande pour boite de vitesses robotisee. |
FR2861154B1 (fr) * | 2004-11-17 | 2007-09-28 | Valeo Embrayages | Ensemble de commande pour boite de vitesses robotisee. |
FR2913475B1 (fr) * | 2007-03-07 | 2009-08-28 | Renault Sas | Actionneur electromecanique pour boite de vitesses de vehicule automobile et dispositif d'embrayage pourvu d'un tel actionneur. |
FR2988153B1 (fr) * | 2012-03-14 | 2014-04-18 | Peugeot Citroen Automobiles Sa | Commande de crabot d'une boite de vitesses, comportant un basculeur |
DE102018131892A1 (de) * | 2017-12-13 | 2019-06-13 | Schaeffler Technologies AG & Co. KG | Parksperre - Stellmutter |
FR3087242B1 (fr) * | 2018-10-15 | 2021-07-02 | Renault Sas | Agencement pour la commande interne de selection d'une boite de vitesses |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4449416A (en) * | 1981-09-04 | 1984-05-22 | J. I. Case Company | Transmission control system |
US4498350A (en) * | 1982-09-20 | 1985-02-12 | Eaton Corporation | Shifting mechanism |
EP0198111A2 (fr) * | 1985-04-19 | 1986-10-22 | Rockwell International Corporation | Dispositif de changement de vitesse pour entraînement d'essieux à deux vitesses |
GB2207715A (en) * | 1987-07-28 | 1989-02-08 | Gaydon Techn Ltd | Gearbox having shift actuated by resilient means |
EP0579532A1 (fr) * | 1992-07-17 | 1994-01-19 | Société Anonyme dite: REGIE NATIONALE DES USINES RENAULT | Dispositif d'assistance mécanique au passage de vitesses |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3611093A1 (de) * | 1986-04-03 | 1987-10-08 | Opel Adam Ag | Kraftfahrzeug mit allradantrieb |
-
1998
- 1998-04-28 FR FR9805309A patent/FR2777834B1/fr not_active Expired - Lifetime
-
1999
- 1999-04-28 DE DE19980838T patent/DE19980838B4/de not_active Expired - Lifetime
- 1999-04-28 EP EP99915859A patent/EP0990098B1/fr not_active Expired - Lifetime
- 1999-04-28 WO PCT/FR1999/001008 patent/WO1999056040A1/fr active IP Right Grant
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4449416A (en) * | 1981-09-04 | 1984-05-22 | J. I. Case Company | Transmission control system |
US4498350A (en) * | 1982-09-20 | 1985-02-12 | Eaton Corporation | Shifting mechanism |
EP0198111A2 (fr) * | 1985-04-19 | 1986-10-22 | Rockwell International Corporation | Dispositif de changement de vitesse pour entraînement d'essieux à deux vitesses |
GB2207715A (en) * | 1987-07-28 | 1989-02-08 | Gaydon Techn Ltd | Gearbox having shift actuated by resilient means |
EP0579532A1 (fr) * | 1992-07-17 | 1994-01-19 | Société Anonyme dite: REGIE NATIONALE DES USINES RENAULT | Dispositif d'assistance mécanique au passage de vitesses |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2835030A1 (fr) * | 2002-01-22 | 2003-07-25 | Valeo | Procede et dispositif de commande du passage des vitesses dans une boite de vitesses de vehicule automobile |
EP1333202A1 (fr) * | 2002-01-22 | 2003-08-06 | VALEO EMBRAYAGES s.a.s. | Procédé et dispositif de commande du passage des vitesses dans une boíte de vitesses de véhicule automobile |
Also Published As
Publication number | Publication date |
---|---|
FR2777834B1 (fr) | 2000-06-23 |
FR2777834A1 (fr) | 1999-10-29 |
DE19980838B4 (de) | 2010-04-08 |
EP0990098B1 (fr) | 2003-09-03 |
DE19980838T1 (de) | 2000-08-10 |
EP0990098A1 (fr) | 2000-04-05 |
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