EP2425155A1 - Dispositif d'actionnement d'un élément de commutation à conjugaison de formes pouvant commuter entre au moins deux positions de commutation - Google Patents

Dispositif d'actionnement d'un élément de commutation à conjugaison de formes pouvant commuter entre au moins deux positions de commutation

Info

Publication number
EP2425155A1
EP2425155A1 EP10713985A EP10713985A EP2425155A1 EP 2425155 A1 EP2425155 A1 EP 2425155A1 EP 10713985 A EP10713985 A EP 10713985A EP 10713985 A EP10713985 A EP 10713985A EP 2425155 A1 EP2425155 A1 EP 2425155A1
Authority
EP
European Patent Office
Prior art keywords
switching element
component
drive
positive
switching
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Withdrawn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
EP10713985A
Other languages
German (de)
English (en)
Inventor
Thomas Rosemeier
Christoph Pelchen
Bernd-Robert Hoehn
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
FZGmbH
Original Assignee
ZF Friedrichshafen AG
FZGmbH
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, FZGmbH filed Critical ZF Friedrichshafen AG
Publication of EP2425155A1 publication Critical patent/EP2425155A1/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Withdrawn legal-status Critical Current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
    • F16H63/304—Constructional features of the final output mechanisms the final output mechanisms comprising elements moved by electrical or magnetic force
    • 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
    • F16H63/304—Constructional features of the final output mechanisms the final output mechanisms comprising elements moved by electrical or magnetic force
    • F16H2063/3056—Constructional features of the final output mechanisms the final output mechanisms comprising elements moved by electrical or magnetic force using cam or crank gearing
    • 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 a device for actuating a switchable at least between three switching positions form-fitting switching element according to the closer defined in the preamble of claim 1.
  • rotating components such as transmission shafts or so-called idler gears
  • switching elements in a power flow of a transmission device in order to be able to represent different ratios or gear ratios of a transmission device and to be able to switch between them.
  • gear ratio are preferably zugkraftunterbrechungsok at the same time high ride comfort feasible.
  • open frictional switching elements are undesirably characterized by drag torques, which affect the efficiency of a transmission device.
  • Transmission devices which are formed with positive switching elements, are operable with higher efficiencies, since in the region of positive switching elements known to occur significantly lower drag torques.
  • translation changes in which form-fitting switching elements are involved, traction interruption-free feasible only by further suitable measures, but increase the space requirement of a transmission device and also cause additional manufacturing costs.
  • positive-locking switching elements are essentially openable or closable only in the region of their synchronization point or close to their synchronization point, which is why complicated design or complex control-side measures are provided for realizing desired switching times by means of which interlocking switching elements can be selectively synchronized.
  • form-fitting switching elements are often designed as synchronizers, which have for the synchronization of the switching elements areas, by means of the speed differences between the switching element halves by a frictional engagement within predefined times are compensated.
  • synchronizations are disadvantageously subject to undesirably high wear and are also characterized by a high space requirement.
  • interlocking shift elements of vehicle transmission devices are guided, for example, by a corresponding guidance of an engine speed in the direction of their synchronous state and then opened or closed.
  • an actuation speed is to be varied as a function of the operating state of a transmission device or of the form-fitting shifting elements.
  • the operating speed of a positive switching element during fahr mutualunkritischer operating conditions of a transmission device is more predictable than during Bethebszuquestn, during which an excessive actuation speed of a form-locking switching element affects ride comfort to an undesirably high extent.
  • a form-locking switching element is actuated during operating state courses of a form-fitting switching element, during which the switching element is opened, in order to ensure short switching times and high driving comfort with high actuating speeds.
  • a positive-locking switching element is actuated during Bethebszunotn during which the switching element is opened or closed, only with low actuating speeds and high actuating forces in order to realize a requested ratio change in a transmission device without affecting the ride comfort safely and to the on or use the claw to overcome the friction.
  • the operating speed of form-locking switching elements is substantially variable but by means of a high control and regulation effort, since the one of a form-locking switching element actuated drive device provided drive energy in response to a current operating state the positive-locking switching element or the transmission device is to be changed.
  • the present invention is therefore based on the object to provide a device for actuating a positive switching element of a transmission device available by means of an actuation of the form-locking switching element in a simple and cost-effective manner to the desired extent can be varied.
  • the inventive device for actuating a switchable at least between two switching positions interlocking switching element of a transmission device is designed with a drive device and a drive converter means for converting a rotary drive movement of the drive means in a translatory actuating movement of the positive switching element.
  • a drive device for converting a rotary drive movement of the drive means in a translatory actuating movement of the positive switching element.
  • two transmission shafts of the transmission device are rotatably connected to each other in one or two switch positions, while the transmission shafts are decoupled from each other in a further switching position of the switching element.
  • the drive converter device comprises a first component having at least one control cam and a second component operatively connected thereto, which in the region of the control cam are connected to an axially displaceable component of the form-fitting switching element connected in a rotationally fixed manner to one of the transmission shafts.
  • An antreibs coupled into a translational relative movement of the component of the switching element, wherein the control cam at least in the switching positions of the form-fitting switching element equivalent curve areas with respect to the translational actuating movement of the switching element each a smaller amount Slope has as equivalent to between the switching positions of the positive switching element curve areas.
  • the magnitude slope of the cam in curve areas which is an open operating state of the form-locking switching element between the switching position and the other switching position and between the other switching position and an additional switching position of the positive switching element, during which gear shaft with each other rotatably connected, are equivalent, greater than in the other curve portions of the control cam, which switching times of trained with the device according to the invention gear devices in comparison to conventionally designed transmission devices in a simple and cost-effective manner while driving comfort are reduced or predefined switching times with less effort and high ride comfort can be realized.
  • the magnitude slope of the cam is in a further advantageous embodiment of the device according to the invention in curve areas, which are equivalent to BethebsSchsverierin the positive switching element, while in the region of the form-locking switching element via the component of the switching element in each case made a rotationally fixed connection between two of the transmission shafts or is dissolved, larger than in the curved areas, which are equivalent to the switching positions of the positive switching element.
  • the positive switching element in the switching positions of the positive switching element due to the absolute smaller amount slope, for example by self-locking, without applying an additional holding force and due to the magnitude larger slope of the cam in the curved areas, while those in the form of the interlocking switching element on the device Switching element in each case a rotationally fixed connection between two of the transmission shafts is made or released, a low switching speed at the same time great switching power, ie with a large engagement or extraction force realized.
  • the component of the switching element in the region of at least one annular groove via at least one bolt element with the first component and with the second component of the drive converter device operatively connected wherein a rotational decoupling between the component of the switching element and the first component and the second component of the drive converter device in the region between the bolt element and the annular groove of the component of the switching element can be displayed.
  • the second component is connected in the region of at least one elongated hole on the at least one bolt element with the first component and with the component of the switching element.
  • a further embodiment of the device according to the invention is formed between the drive device and the drive converter device with a spring device for intermediate storage of rotational drive energy of the drive device.
  • the mechanical power delivered by the drive device is temporarily stored in the region of the spring device. If the form-fitting switching element, for example by dissolving the tooth-on-tooth position, can be converted into its closed operating state or if a through-connection in the region of the positive switching element is possible, the potential energy stored in the region of the spring device supports the drive device during the further displacement of the component of the switching element, whereby a switching time as short as possible can be displayed despite the phase-wise delay.
  • the spring means between a driven by an electric motor of the drive device driving ring element and the second component of the drive converter device is provided.
  • the spring device in the advantageous development of the invention Device in installation position on a bias voltage to which in the region of the spring device only when an actuating force applied greater than a threshold potential energy can be stored.
  • This is in the field of spring device during switching operations, during which in the field of interlocking switching element through-connection is carried out without delay or during which a rotationally fixed connection between the transmission shafts is achieved without delay or stored during delay Ausspurvorrudn the positive switching element, no potential energy in the spring means.
  • This is realized by a correspondingly biased spring device, in whose area potential energy is stored only from a certain force.
  • a particularly space-saving and characterized by low production costs development of the device according to the invention has between a motor output shaft of the electric motor of the drive device and the drive ring element to a transmission device in the region of a rotational movement of the electric motor is translated slowly, which in the field of the electric motor for actuating the positive switching element only small drive torques are applied.
  • the components of the drive converter device and the positive switching element are arranged coaxially with each other in a space-favorable development of the device according to the invention and preferably joined together, whereby the device has a low space requirement, in particular in the axial direction.
  • Figure 1 is a highly schematic representation of a device for actuating a switchable between three switching positions form-fitting switching element of a transmission device.
  • Fig. 2 is an exploded view of the device of FIG. 1;
  • FIG. 3 is a partial longitudinal sectional view of the apparatus of FIG. 1; FIG. and
  • FIG. 4 shows a partial representation of a development of a control curve of a first component of a drive converter device of the device according to FIG. 1.
  • Fig. 1 is a transmission device 1 with a device 2 for actuating a switchable between three switching positions S1, S2 and S3 form-fitting switching element with a drive means 4 and a closer shown in Fig. 2 and Fig. 3 drive converter means 5 for converting a rotary drive movement of Drive device 4 shown in a translational actuation movement of the form-locking switching element 3.
  • the drive converter device 5 comprises a first component 9 with three control cams 9A and 9B distributed over the circumference of the first component 9 and a second component 10 operatively connected thereto, which has bolt elements 11A and 11B in the region of the control cams 9A and 9B and elongated holes 10A, 10B of the second component 10 are connected to a rotatably connected to the transmission shaft 7 and axially displaceable component 12 of the positive switching element.
  • the two components 9 and 10 of the drive converter device 5 are operatively connected via engaging in an annular groove 13 of the component 12 of the positive switching element 3 bolt elements 1 1 A and 1 1 B that between the component 12 of the positive switching element 3 and the components 9 and 10 of Drive converter device 5 with low friction losses a differential speed is represented and a drive device side tion rotatory relative movement between the first component 9 and the second component 10 is converted into a translational movement of the component 12 of the switching element 3.
  • the control cams 9A and 9B of the first component 9 of the drive converter device 5 each have a profile shown in greater detail in FIG. 4, which is characterized by gradients varying in curves in relation to the translatory actuating movement of the component 12 of the switching element 3.
  • the control cams 9A, 9B in the switching positions S1 to S3 of the positive switching element 3 equivalent curve areas K1, K2 and K3 each have a smaller magnitude slope than in between the switching positions S1 to S3 of the form-locking switching element 3 equivalent curve areas K4 to K7.
  • the drive device 4 is designed with an electric motor 14, the rotational drive energy of which is transmitted via a gear arrangement 17 provided between an engine output shaft 15 of the electric motor 14 of the drive device 4 and a drive ring element 16 of the drive converter device 5, which is embodied here as a spur gear, and translated slowly ,
  • a gear arrangement 17 provided between an engine output shaft 15 of the electric motor 14 of the drive device 4 and a drive ring element 16 of the drive converter device 5, which is embodied here as a spur gear, and translated slowly .
  • the gear arrangement as a worm gear or with another suitable gear.
  • the components of the drive converter device 5 and the interlocking switching element 3 are present coaxial with each other and inserted into each other, whereby the device 2 in the axial direction has a small space requirement and the comparatively narrow in the axial direction annular disc of the first component 9, in which the cams 9A and 9B are arranged, is fully exploitable.
  • the axial movement of the shift sleeve 12 results in active drive device 4 from the provided in the field of switching mimic the drive converter means 5 conversion of the rotary drive of the electric motor 14 in a translational drive movement.
  • the conversion takes place by the correspondingly designed control cams 9A and 9B of the first component 9 of the drive converter device 5, which constitutes a housing-fixed hollow shaft of the transmission device 1.
  • the control cams 9A and 9B extend obliquely with respect to the circumferential direction of the first component 9 along a screw connection. benline, whereby the pin elements 1 1 A and 1 1 B change in a rotation of the pin members 1 1 A and 1 1 B relative to the first component 9 and their axial position.
  • the bolt elements 1 1 A and 1 1 B are moved over the drive ring member 16 and the second component 10 operatively connected thereto with a corresponding electric motor-side drive.
  • the cams 9A and 9B in the curve areas K1 and K3 a small amount slope on to the shift sleeve 13 in the switching positions S1 and S2, in which the positive switching element 3 each produces a rotationally fixed connection between the transmission shafts 6 and 7 or 7 and 8, to achieve a self-locking and the shift sleeve thirteenth can hold without additional application of a holding force in the first or second switching position S1 or S2 of the positive switching element 3.
  • the limits of the pitch regions B1 and B3 each represent a negative slope or an expansion, in order to hold jaws of the form-locking switching element 3, for example by an undercut in the respective switching position S1 or S2.
  • the curve areas K4 and K7 are each designed with a magnitude greater slope than in the curve areas K1 and K3, however, with a smaller pitch than in the curve areas K5 and K6 to a low axial actuation speed of the component 12 of the positive locking gene switching element 3 to represent at the same time a large actuation force.
  • the cam sections K4 and K7 are respectively equivalent to operating state courses of the interlocking shift element 3, during which claws 19, 20 of the interlocking shift element 3 with claws 21 of the transmission shaft 6 and claws 22 of the transmission shaft 8 are engaged or disengaged. In particular, when releasing a positive connection in the region of the positive switching element 3 is due to the selected slope of the cams 9A and 9B each have a large pull-out force available.
  • the curve areas K5 and K6 presently represent so-called traversing ranges of the component 12 of the form-fitting switching element 3 and are equivalent to Bethebszurentn the positive switching element 3, during which the form-locking switching element 3 is opened. Since the curve areas K5 and K6 are each designed with a larger pitch compared to the curve areas K1, K2, K3, K4 and K7, a circuit within a desired short switching time is feasible.
  • the equivalent to the third shift position S3 of the interlocking switching element 3 curve area K2 is in turn formed with respect to the curve areas K5 and K6 with a smaller absolute slope in order not to have to stop the electric motor 14 during synchronization, for example by a drive motor of the form-locking switching element 3 ,
  • the curve shown in Fig. 4 of the control cam 9A and the cam 9B has with respect to a line of symmetry S a qualitatively analogue course for each switching side of the positive switching element 3, however, a quantitative adjustment of the curve of the cams 9A and 9B to different jaw geometries the positive switching element 3 and the transmission shafts 6 and 8 is possible.
  • the rotary drive energy introduced into the system by the electric motor 14 is temporarily stored in the area of the spring device 18. Solves the blocking in the area of the positive switching element 3 preventing blockage in the region of the positive switching element 3, for example, by a required for the switching differential speed between the switching element halves of the form-locking switching element 3, supports the stored in the spring device 18 potential energy the electric motor 14 at Accelerating the sliding sleeve 12, whereby the switching time of the positive switching element 3 is kept short.
  • the device according to the invention is characterized by a small axial space requirement and circuits of a positive switching element are within a desired short switching times with a small electric motor feasible.
  • the device according to the invention is characterized by a low number of parts and therefore inexpensive to produce. Furthermore, costly test bench trials and adjustments of a transmission device designed with the device can be avoided by cost-effective simulations, during which a tuning of the operating and component parameters is carried out in each case.

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

Abstract

L'invention concerne un dispositif (2) d'actionnement d'au moins un élément de commutation à conjugaison de formes (3) pouvant commuter entre au moins deux positions de commutation, pour un dispositif de transmission doté d'un dispositif d'entrée (4) et un dispositif convertisseur de sortie (5) destiné à convertir un mouvement d'entraînement en rotation du dispositif d'entrée (4) en un mouvement d'actionnement en translation de l'élément de commutation à conjugaison de formes (3). Grâce à l'élément de commutation (3), deux arbres de transmission sont reliés ensemble de manière solidaire en rotation dans une position de commutation (1) et, dans une autre position de commutation de l'élément de commutation, les arbres de transmission sont découplés l'un de l'autre. Selon l'invention, le dispositif convertisseur de sortie (5) comprend un premier composant (9) avec au moins une came de commande (9A, 9B) et un deuxième composant (10) qui coopère avec elle, qui sont reliés au niveau de la came de commande (9A, 9B) avec un composant (12) de l'élément de commutation à conjugaison de formes (3), solidaire en rotation de l'un des arbres et pouvant se déplacer dans la direction axiale.
EP10713985A 2009-04-27 2010-04-19 Dispositif d'actionnement d'un élément de commutation à conjugaison de formes pouvant commuter entre au moins deux positions de commutation Withdrawn EP2425155A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009002661A DE102009002661A1 (de) 2009-04-27 2009-04-27 Vorrichtung zum Betätigen eines wengistens zwischen drei Schaltstellungen umschaltbaren formschlüssigen Schaltelementes
PCT/EP2010/055102 WO2010124955A1 (fr) 2009-04-27 2010-04-19 Dispositif d'actionnement d'un élément de commutation à conjugaison de formes pouvant commuter entre au moins deux positions de commutation

Publications (1)

Publication Number Publication Date
EP2425155A1 true EP2425155A1 (fr) 2012-03-07

Family

ID=42288892

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10713985A Withdrawn EP2425155A1 (fr) 2009-04-27 2010-04-19 Dispositif d'actionnement d'un élément de commutation à conjugaison de formes pouvant commuter entre au moins deux positions de commutation

Country Status (5)

Country Link
US (1) US20120037472A1 (fr)
EP (1) EP2425155A1 (fr)
CN (1) CN102414489A (fr)
DE (1) DE102009002661A1 (fr)
WO (1) WO2010124955A1 (fr)

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DE102009002661A1 (de) 2010-10-28
CN102414489A (zh) 2012-04-11
WO2010124955A1 (fr) 2010-11-04
US20120037472A1 (en) 2012-02-16

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