WO2020225047A1 - Unité d'embrayage - Google Patents

Unité d'embrayage Download PDF

Info

Publication number
WO2020225047A1
WO2020225047A1 PCT/EP2020/061857 EP2020061857W WO2020225047A1 WO 2020225047 A1 WO2020225047 A1 WO 2020225047A1 EP 2020061857 W EP2020061857 W EP 2020061857W WO 2020225047 A1 WO2020225047 A1 WO 2020225047A1
Authority
WO
WIPO (PCT)
Prior art keywords
clutch
electric motor
planetary gear
converter device
support
Prior art date
Application number
PCT/EP2020/061857
Other languages
German (de)
English (en)
Inventor
Stefan LIENHART
Original Assignee
Magna powertrain gmbh & co 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 Magna powertrain gmbh & co kg filed Critical Magna powertrain gmbh & co kg
Publication of WO2020225047A1 publication Critical patent/WO2020225047A1/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
    • F16D28/00—Electrically-actuated clutches
    • 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
    • F16D21/00—Systems comprising a plurality of actuated clutches
    • F16D21/02—Systems comprising a plurality of actuated clutches for interconnecting three or more shafts or other transmission members in different ways
    • F16D21/06—Systems comprising a plurality of actuated clutches for interconnecting three or more shafts or other transmission members in different ways at least two driving shafts or two driven shafts being concentric
    • 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
    • F16D13/00—Friction clutches
    • F16D13/22—Friction clutches with axially-movable clutching members
    • F16D13/38—Friction clutches with axially-movable clutching members with flat clutching surfaces, e.g. discs
    • F16D13/52—Clutches with multiple lamellae ; Clutches in which three or more axially moveable members are fixed alternately to the shafts to be coupled and are pressed from one side towards an axially-located member
    • 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
    • F16D21/00—Systems comprising a plurality of actuated clutches
    • F16D21/02—Systems comprising a plurality of actuated clutches for interconnecting three or more shafts or other transmission members in different ways
    • F16D21/06—Systems comprising a plurality of actuated clutches for interconnecting three or more shafts or other transmission members in different ways at least two driving shafts or two driven shafts being concentric
    • F16D2021/0638—Electrically actuated multiple lamellae clutches
    • 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
    • F16D23/00—Details of mechanically-actuated clutches not specific for one distinct type
    • F16D23/12—Mechanical clutch-actuating mechanisms arranged outside the clutch as such
    • F16D2023/123—Clutch actuation by cams, ramps or ball-screw mechanisms

Definitions

  • the present invention relates to a clutch unit comprising a first clutch, a second clutch, an electric motor for actuating the first clutch and the second clutch, whereby the first clutch can be actuated by energizing the electromotor and the second clutch can be actuated by energizing the electromotor is, a planetary gear and a drive converter device to convert the rotational movements of the electric motor into translatory actuation movements of the first clutch and the second clutch, the electric motor being connected to the drive converter device via the planetary gear mechanism.
  • Clutch units in particular multi-plate clutches, are usually actuated via an actuator unit with an electric motor and an intermediate gear with a transmission component.
  • Such an intermediate gear is often formed by a worm gear, the worm shaft of which is effectively connected to a ball ramp unit as a transmission component.
  • structures are known in which the intermediate gear is designed as a planetary gear.
  • Clutch units of the above-mentioned type usually have several clutches that are actuated via one and the same Aktuatorein unit, whereby installation space can be optimally used and a reduced component cost is created.
  • an actuator unit not only has one clutch of a clutch unit, but at least one further clutch a clutch unit is actuated by energizing an electric motor, it is important to be able to set a defined “fail save open” state.
  • Setting a “fail save open” state is to be understood as a process which, in the event of an error in the energization of the electric motor, results in a “neutral state”, namely a state in which no clutch is activated, and the other clutch is not automatically activated.
  • Actuating clutches via a worm gear as an intermediate gear cannot set a defined “fail safe open” state, but the worm gear has poor efficiency, which means that another clutch is not actuated immediately.
  • a clutch unit comprising a first clutch, a second clutch, an electric motor for actuating the first clutch and the second clutch, the first clutch being actuatable by energizing the electric motor and the second clutch being actuated by a countercurrent to the electric motor can be actuated, a planetary gear and a drive converter device for converting the rotary movements of the electric romotors in translatory actuation movements of the first clutch and the second clutch, the electric motor being connected to the drive converter device via the planetary gear mechanism, the clutch unit having a protective mechanism that is adapted to be used in the event of an error in the power supply to the electric motor Actuation of the first clutch or the second clutch to move the drive converter device into a neutral position predetermined by the protective mechanism.
  • the first clutch is particularly preferably designed as a multi-disc clutch.
  • the protective mechanism is preferably arranged to be functionally effective between the electric motor and the planetary gear on an output shaft of the electric motor.
  • the protective mechanism has the following components:
  • the locking spring being functionally arranged between the planetary gear and the support nut and the support nut in one position when the electric motor is energized to actuate the first clutch and in the event of an error in the energization of the electric motor to actuate the first clutch via the tensioned locking spring held by the movement thread th which corresponds to a neutral position of the drive converter device and
  • FIG. 1 shows an exemplary coupling unit according to the present invention.
  • the clutch unit 1 shown in FIG. 1 has a first clutch 2, a second clutch 3, a protective mechanism 7 and an actuator unit.
  • the actuator unit comprises an electric motor 4, a planetary gear 5 and a drive converter device 6.
  • the first clutch 2 is designed as a multi-plate clutch 2 ‘.
  • the second clutch 3 is designed as a claw clutch 3 '.
  • the multi-disc clutch 2 ‘and the dog clutch 3‘ are arranged essentially coaxially.
  • the term “axial” describes a direction along or parallel to an axis 21.
  • the multi-disk clutch 2 ' has a clutch basket and a clutch carrier, a plurality of outer disks being arranged on the clutch cage and a plurality of inner disks being arranged on the clutch carrier.
  • the outer disks and the inner disks form a disk pack 18, all inner disks and outer disks are arranged alternately within the disk pack 18.
  • the electric motor 4 is operatively connected to the drive converter device 6 via the planetary gear 5.
  • the drive converter device 6 is designed as a ball ramp arrangement and serves to convert the rotational movements of the electric motor 4 into translatory actuation movements of the first clutch 2 and the second clutch 3.
  • the ball ramp assembly has an axially fixed non-rotatable support disc 13 and an axially displaceable pressure disc 14 which acts axially on a pressure piston 15 on.
  • the pressure piston 15 is in turn connected to the multi-disk clutch 2 ‘and the claw clutch 3‘ in an adjustable manner.
  • the pressure plate 14 and the support plate 13 have on their facing end faces several pairs of opposing ball ramps with variable depths over the respective circumference of the disc.
  • In the Kugelrampenploun gene runs at least one ball 16.
  • a clutch spring 17 is arranged between the pressure piston 15 and the clutch basket of the multi-plate clutch 2 ‘a clutch spring 17 is arranged.
  • the thrust washer 14 of the ball ramp arrangement is operatively connected to a spur gear 19, which in turn is firmly connected to a planetary carrier of the planetary gear 5.
  • the planetary gear 5 has a sun gear and a ring gear in addition to the planet carrier on which a plurality of plane wheels are arranged.
  • the planetary which mesh with an external toothing of the sun gear and an internal toothing of the ring gear of the planetary gear 5.
  • the sun gear of the planetary gear 5 is firmly connected to the output shaft 8 of the electric motor 4
  • the electric motor 4 thus drives via the output shaft 8 into the planetary gear 5.
  • the ring gear of the planetary gear 5 is firmly connected to a housing of the clutch unit 1.
  • the claw coupling 3 ‘is closed when the balls 16 are in the Kugelrampenformun conditions between the support disc 13 and the pressure disc 14 in a bottom dead center of the respective ball ramp pairing.
  • the clutch spring 17 is fully extended, i.e. relaxed. If the balls 16 are in the ball ramp pairings between the support disc 13 and the thrust washer 14 in a top dead center of the respective ball ramp pairing, the multi-disc clutch 2 ‘is closed.
  • the thrust washer 14 When the electric motor 4 is energized, the thrust washer 14 is rotated via the planetary gear 5 and the spur gear 19, whereby the thrust washer 14 moves relative to the support plate 13 in an axial direction towards the multi-plate clutch 2 '- the balls 16 move between the ball ramp pairs the support disc 13 and the pressure disc 14 from the bottom dead centers of the Ball ramp pairings along the ball ramps and press the pressure piston 15 in the direction of the multi-disc clutch 2 ', more precisely in the direction of the disc pack 18 of the multi-disc clutch 2'.
  • the claw clutch 3 ' is opened and the clutch spring 17 is pretensioned.
  • the multi-disc clutch 2 ' is not yet activated and the system is in a neutral state in which neither the claw clutch 3' nor the multi-disc clutch 2 'is activated. If the pressure disk 14 continues to be rotated and thus moved axially, the multi-plate clutch 2 'is actuated and the clutch spring 17 is maximally pretensioned. The balls 16 in the ball ramp pairings between the support disk 13 and the pressure disk 14 are each located in the top dead center. To maintain this state, a further energization of the electric motor 4 is required (Hal test current).
  • the protective mechanism 7 is arranged on or on the output shaft 8 of the electric motor 4 and comprises a movement thread 9, a support nut 10, a locking spring 11 and a support spring 12.
  • the protective mechanism 7 is functionally effective between the planetary gear 5, more precisely the internal gear of the housing Planetary gear 5, and a bearing plate 20, which is fixed in the housing in which the clutch unit 1 is located-is arranged.
  • the movement thread 9 is formed on the output shaft 8 and the support nut 10 can move axially on this movement thread, namely screwed on and unscrewed.
  • the support nut 10 is also clamped fixed to the housing.
  • the support nut 10 presses against the locking spring 11, which is arranged between the support nut 10 and the ring gear of the planetary gear 5.
  • the length and strength of the locking spring 11 defines in which area the neutral position or the neutral state of the ball ramp arrangement is established.
  • the output shaft 8 is in a direction of rotation corresponding to the direction of rotation when the electric motor is countercurrent 4 rotated so that the support nut 10 is screwed in a direction towards the locking spring 11 on the movement thread 9 and is thus tensioned.
  • the locking spring 11 of the protective mechanism 7 is compressed until the (opening) forces in the movement thread 9 are so great (coefficient of friction) that the support nut 10 no longer moves axially on the movement thread 9.
  • the neutral position or the neutral state of the ball ramp arrangement is established via an equilibrium of forces between the Arretierfe of the 11 and the clutch spring 17.
  • the multi-disc clutch 2 ‘is actuated by energizing the electric motor 4, the locking spring 11 is completely relaxed and the support nut 10 is unscrewed from the movement thread 9 in a direction away from the locking spring 11.
  • the support spring 12 of the protective mechanism 7 is arranged between the bearing plate 20 and a shoulder on the support nut 10.
  • the support spring 12 acts in the direction of the relaxed locking spring 11 and holds the support nut 10 in position and presses against the thrust of the movement thread 9. Furthermore, a quick re-screwing of the support nut 10 on the
  • Movement thread 9 can be achieved by a conical shape or a chamfer of the BEWe supply thread 9.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

L'invention concerne une unité d'embrayage (1) comprenant un premier embrayage (2), un deuxième embrayage (3), un moteur électrique (4) destiné à actionner le premier embrayage (2) et le deuxième embrayage (3), le premier embrayage (2) pouvant être actionné par mise sous tension du moteur électrique (4) et le deuxième embrayage (3) pouvant être actionné par mise sous tension inverse du moteur électrique (4), un engrenage planétaire (5) et un dispositif de conversion d'entraînement (6) destiné à convertir les mouvements de rotation du moteur électrique (4) en mouvements d'actionnement en translation du premier embrayage (2) et du deuxième embrayage (3). Le moteur électrique (4) est relié avec action de positionnement au dispositif de conversion d'entraînement (6) par le biais de l'engrenage planétaire (5). L'unité d'embrayage (1) possède un mécanisme de protection (7) qui est adapté pour déplacer le dispositif de conversion d'entraînement (6) dans une position neutre prédéterminée par le biais du mécanisme de protection (7) en cas de défaut de l'alimentation électrique du moteur électrique (4) pour l'actionnement du premier embrayage (2).
PCT/EP2020/061857 2019-05-09 2020-04-29 Unité d'embrayage WO2020225047A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019206722.0A DE102019206722B3 (de) 2019-05-09 2019-05-09 Kupplungseinheit
DE102019206722.0 2019-05-09

Publications (1)

Publication Number Publication Date
WO2020225047A1 true WO2020225047A1 (fr) 2020-11-12

Family

ID=68724949

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2020/061857 WO2020225047A1 (fr) 2019-05-09 2020-04-29 Unité d'embrayage

Country Status (2)

Country Link
DE (1) DE102019206722B3 (fr)
WO (1) WO2020225047A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202010008447U1 (de) * 2010-09-03 2011-09-28 Fev Motorentechnik Gmbh Betätigungsvorrichtung für die Betätigung einer Kupplungsanordnung
WO2017129610A2 (fr) * 2016-01-25 2017-08-03 Kongsberg Automotive As Actionneur d'embrayage pour véhicule
WO2017148501A1 (fr) * 2016-02-29 2017-09-08 Gkn Automotive Ltd. Boîte de vitesses manuelle comprenant un ensemble d'actionneurs, procédé de commande de la boîte de vitesses manuelle et entraînement électrique comprenant une boîte de vitesses manuelle

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202010008447U1 (de) * 2010-09-03 2011-09-28 Fev Motorentechnik Gmbh Betätigungsvorrichtung für die Betätigung einer Kupplungsanordnung
WO2017129610A2 (fr) * 2016-01-25 2017-08-03 Kongsberg Automotive As Actionneur d'embrayage pour véhicule
WO2017148501A1 (fr) * 2016-02-29 2017-09-08 Gkn Automotive Ltd. Boîte de vitesses manuelle comprenant un ensemble d'actionneurs, procédé de commande de la boîte de vitesses manuelle et entraînement électrique comprenant une boîte de vitesses manuelle

Also Published As

Publication number Publication date
DE102019206722B3 (de) 2019-12-19

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