WO2017194046A1 - Mécanisme de commande - Google Patents

Mécanisme de commande Download PDF

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Publication number
WO2017194046A1
WO2017194046A1 PCT/DE2017/100279 DE2017100279W WO2017194046A1 WO 2017194046 A1 WO2017194046 A1 WO 2017194046A1 DE 2017100279 W DE2017100279 W DE 2017100279W WO 2017194046 A1 WO2017194046 A1 WO 2017194046A1
Authority
WO
WIPO (PCT)
Prior art keywords
housing
gear
actuator
motor
thrust washer
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.)
Ceased
Application number
PCT/DE2017/100279
Other languages
German (de)
English (en)
Inventor
Bastian Hain
Thomas Nehmeyer
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.)
Schaeffler Technologies AG and Co KG
Original Assignee
Schaeffler Technologies AG and 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 Schaeffler Technologies AG and Co KG filed Critical Schaeffler Technologies AG and Co KG
Publication of WO2017194046A1 publication Critical patent/WO2017194046A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
    • F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
    • F01L1/352—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using bevel or epicyclic gear
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/46—Component parts, details, or accessories, not provided for in preceding subgroups
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
    • F01L13/0021—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque by modification of rocker arm ratio
    • F01L13/0026—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque by modification of rocker arm ratio by means of an eccentric
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00—Other engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
    • F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
    • F01L1/352—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using bevel or epicyclic gear
    • F01L2001/3521—Harmonic drive of flexspline type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L2820/00—Details on specific features characterising valve gear arrangements
    • F01L2820/03—Auxiliary actuators
    • F01L2820/032—Electric motors

Definitions

  • the invention relates to an actuator, which has a control gear and an electric motor, wherein the motor shaft of the electric motor with the input shaft of the adjusting gear rotatably connected or identical.
  • a camshaft adjuster which has a trained as a three-shaft gear adjusting mechanism.
  • a pre-reduction gear between an adjusting shaft of the three-shaft gear and the motor shaft of the electric motor is arranged.
  • a camshaft adjuster with a three-shaft transmission, namely wave gear, built-variable adjustment is also known from DE 10 2013 220 220 A1.
  • the adjusting mechanism comprises an input shaft, which can be coupled via a chain drive with a crankshaft of an internal combustion engine, and an output shaft, which is provided for coupling to a camshaft of the internal combustion engine.
  • a third shaft provided, electrically driven adjustment serves to adjust the phase relation between the crankshaft and the camshaft.
  • Another electric camshaft adjuster is for example from the
  • JP S60-18 640 A discloses an electric actuator in which a thrust washer for axially securing transmission elements of a wave gear is held on a motor flange.
  • Thrust washers with centering function are known for example from DE 10 2012 204 441 A1 or EP 1 762 732 A1. However, they do not serve the purpose of centering the motor housing of an actuator coaxial with the actuating gear.
  • the invention has for its object to provide a comparison with the prior art further developed, electrically driven, even under typical load conditions in a motor vehicle working reliable, compact design and at the same time easy to install actuator.
  • This object is achieved by an actuator with the features of claim 1.
  • This actuator comprises a motor housing having an electric motor whose motor shaft acts as an adjusting shaft, and a control gear whose transmission housing is not identical to the motor housing and which cooperates with the electric motor by means of the adjusting shaft.
  • a thrust washer of the adjusting gear held in the gear housing protrudes frontally beyond the gear housing and centered here the motor housing coaxial with the actuating gear.
  • thrust washer of the actuating gear is understood to mean a part fixed to the housing, relative to the gearbox housing, on which at least one gear element of the actuating gear can start, whereby this gear element is in axial position.
  • Direction - based on the common center axis of the electric motor and the adjusting gear - is secured in the gear housing.
  • the thrust washer thus has a multiple function: First, it serves as a securing element, which secures at least one transmission element of the adjusting gear within the adjusting gear against wandering in the axial direction towards the electric motor; Secondly, a peripheral surface of the thrust washer serves as a centering surface, which centered an inner circumferential surface of the motor housing, so that the electric motor is centered overall relative to the actuating gear.
  • the thrust washer can also be used as a transport lock and mounting safeguard: If the actuating gear is transported in isolation from the electric motor, the thrust washer prevents the gearbox components from falling out of the housing of the adjusting gear. In addition, the assembly of actuating gear and electric motor is facilitated by the remaining between the gear housing and the motor housing thrust washer.
  • the thrust washer is preferably connected by a press fit with the transmission housing. Due to the lack of additional fasteners, such as screws, the thrust washer so extremely space-saving between the gear housing and the motor housing can be inserted.
  • the thrust washer is a sheet metal part, that is, a thin-walled forming part, which has a ring-shaped portion and a subsequent cylindrical portion, wherein only the cylindrical portion projects beyond the front end of the gear housing.
  • a harmonic drive is preferably used within the actuator.
  • the thrust washer is in this case designed as an axial stop, that is stop in the longitudinal direction of the central axis of the actuator, a flexible transmission element of the wave gear and / or an outer ring of a wave generator.
  • the Wave generator may include a rolling bearing or a plain bearing.
  • the wave generator is provided for permanent deformation of the flexible transmission element during adjustment operations of the wave gear.
  • the flexible transmission element may, for example, be a flex ring or a flextopf, that is to say a pot-shaped component.
  • An external toothing of the flexible transmission element can mesh with an internal toothing of a ring gear, which is fixedly connected to the transmission housing or identical.
  • the thrust washer to which the otherwise not exactly fixed in the axial direction flexible transmission element and or the outer ring of the wave generator can be preferably subjected to a heat treatment before installation in the transmission housing, whereby the wear resistance of the thrust washer is significantly improved.
  • the thrust washer is provided with a coating to optimize its wear and / or friction properties.
  • the application of a coating on the thrust washer is also possible if this is not designed as a thin sheet metal part, but as a comparatively thick sheet metal part without forming, in particular as a fine stamping.
  • the motor housing and the gear housing on each other contacting end faces, each end face on the inside, that is at the edge of the end face, which faces the central axis of the two housing, adjacent to a cylindrical inner surface of the respective housing.
  • the cylindrical outer surface of the thrust washer thus preferably forms a clearance fit with the motor housing and with the gear housing a press fit to fulfill the transport-securing function.
  • the thrust washer contacts with its outer circumference both inner surfaces, wherein the motor housing is centered relative to the transmission housing exactly.
  • the two housings that is to say the gear mechanism, are located.
  • Be housing and the motor housing preferably connected to each other by a screw.
  • the motor shaft of the electric motor which also represents the adjusting shaft of the adjusting gear, is in a preferred embodiment roller-mounted in the electric motor, in particular ball-bearing.
  • a rolling bearing bearing the adjusting shaft projects into the gear housing at the end face. This means that a normal plane to the center axis of the actuator, which is applied to said end face of the transmission housing, intersects the electric motor in such a way that that roller bearing of the electric motor, which is arranged closer to the control gear, wholly or partially within the cross section of the transmission housing lies.
  • the largest part of the rolling bearing is arranged within the gear housing, while at most a lesser part of the rolling bearing protrudes frontally from the gearbox housing.
  • the actuator is particularly suitable for use in a motor vehicle.
  • the actuator can be used in an electric camshaft adjuster or in a device for adjusting the compression ratio of a reciprocating engine.
  • an output shaft of the actuator for example, connected to an eccentric shaft, which cooperates via a Maupleuel with a crank mechanism of the reciprocating engine.
  • EP 1 154 134 A2 discloses an eccentric adjustment in a crank mechanism of a variable compression internal combustion engine. Further examples of mechanisms enabling the adjustment of the compression ratio of reciprocating internal combustion engines are described, for example, in EP 1 307 642 B1. An embodiment of the invention will be explained in more detail with reference to a drawing. Hereby shows:
  • Fig. 1 shows an actuator in a simplified sectional view.
  • An actuator designated overall by the reference numeral 1 is provided for adjusting an eccentric shaft, with which the compression ratio of a reciprocating engine, namely a gasoline engine, can be varied.
  • the actuator 1 is composed of an electric motor 2 and a control gear 3, namely wave gear, which are rigidly connected to each other and to the engine block of the reciprocating engine.
  • a motor housing of the electric motor 2 is 4; a transmission housing designated 5.
  • An annular end face 6 of the motor housing 4 contacts a likewise annular end face 7 of the gear housing 5.
  • Fastening openings 8 in the end faces 6, 7 are used to screw the motor housing 4 and the gear housing 5.
  • a common component of the electric motor 2 and the adjusting gear 3 is a motor shaft 9 of the electric motor 2, which at the same time acts as an adjusting shaft of the actuating gear 3.
  • the motor shaft 9 is mounted in the electric motor 2 by means of two roller bearings 10, 11, namely ball bearings, and protrudes from the front end of the electric motor 2 and into the actuating gear 3.
  • the adjusting shaft 9 is directly, that is gearless, an inner ring 12 of a designated wave generator 13, which is part of the control gear 3, connected.
  • the co-rotating with the motor shaft 9 inner ring 12 is rigid in itself and has an elliptical outer contour on which rolling elements 14, namely balls, roll.
  • An associated outer ring 15, in which the balls roll 14, is designed compliant in contrast to the inner ring 12, so that it permanently adapts to the rotation of the adjusting shaft 9 of the elliptical shape of the inner ring 12.
  • the outer ring 15 is directly surrounded by a flexible, externally toothed transmission element 16 which has a cup shape. With the help of this resilient transmission element 16, a pivoting of the eccentric shaft to be adjusted is effected.
  • the outer ring 15 of the wave generator 13 and the flexible transmission element 16 have within the adjusting gear 3 game in the axial direction, based on the identical with the axis of rotation of the motor shaft 9 central axis of the actuator. 1
  • the play of components of the wave generator 13, in particular its outer ring 15, is limited in the direction of the end face 7 of the gear housing 5 connected to the electric motor 2 by a thrust washer 17.
  • the thrust washer 17 is a generally annular, hardened sheet steel part, wherein an annular disk-shaped portion 18 of the thrust washer 17 merges on the outside thereof into a cylindrical portion 19 of the thrust washer 17.
  • the cylindrical portion 19 is pressed into a cylindrical inner surface 20 of the gear housing 5, which closes the end face 7 at its inner contour.
  • the thrust washer 17 When mounting the actuator 1, the thrust washer 17 is already inserted into the transmission housing 5, before it is connected to the electric motor 2. During transport of the adjusting gear 3 without a flanged-on electric motor 2, the thrust washer 17 constitutes a transport safety device which prevents falling out of the wave generator 13 from the gearbox 5.
  • the thrust washer 17 protrudes visibly out of the gearbox housing 5 with part of the cylindrical section 19.
  • This outstanding region of the cylindrical portion 19 is used in the further assembly as a centering.
  • the actuating gear 3 facing roller bearing 10 of the electric motor 2 immersed in the transmission housing 5 a.
  • the roller bearing 10 is largely on that side of a plane defined by the end faces 6, 7, which faces the control gear 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

L'invention concerne un mécanisme de commande (1) comprenant un moteur électrique (2) qui présente un carter de moteur (4) et dont l'arbre moteur (9) sert d'arbre de réglage, et un engrenage de commande (3) dont le carter d'engrenage (5) n'est pas identique au carter de moteur et qui coopère avec le moteur électrique (2) au moyen de l'arbre de réglage (9). Un disque de butée (17) de l'engrenage de commande (3) maintenu dans le carter d'engrenage (5) dépasse côté frontal au-delà du carter d'engrenage (5) et centre ainsi le carter de moteur (4) coaxialement par rapport à l'engrenage de commande (3).
PCT/DE2017/100279 2016-05-09 2017-04-07 Mécanisme de commande Ceased WO2017194046A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016207927.1 2016-05-09
DE102016207927.1A DE102016207927B4 (de) 2016-05-09 2016-05-09 Stellantrieb

Publications (1)

Publication Number Publication Date
WO2017194046A1 true WO2017194046A1 (fr) 2017-11-16

Family

ID=58698898

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2017/100279 Ceased WO2017194046A1 (fr) 2016-05-09 2017-04-07 Mécanisme de commande

Country Status (2)

Country Link
DE (1) DE102016207927B4 (fr)
WO (1) WO2017194046A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220243620A1 (en) * 2019-01-16 2022-08-04 Schaeffler Technologies AG & Co. KG Harmonic drive

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017206988A1 (fr) * 2016-05-31 2017-12-07 Schaeffler Technologies AG & Co. KG Mécanisme de réglage

Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6018640A (ja) 1983-07-08 1985-01-30 Toshiba Corp 駆動装置
JPS6037442A (ja) * 1983-08-09 1985-02-26 Toshiba Corp 駆動装置
US4800766A (en) * 1987-02-25 1989-01-31 Mitsubishi Denki Kabushiki Kaisha Coaxial type starter
EP1154134A2 (fr) 2000-05-09 2001-11-14 Nissan Motor Company, Limited Moteur à combustion interne avec taux de compression variable
EP1307642B1 (fr) 2000-08-08 2004-05-19 DaimlerChrysler AG Moteur a combustion interne a piston alternatif, a taux de compression variable
DE10315151A1 (de) 2003-04-03 2004-10-14 Daimlerchrysler Ag Vorrichtung zur relativen Winkelverstellung einer Nockenwelle gegenüber dem antreibenden Antriebsrad
DE102004009128A1 (de) 2004-02-25 2005-09-15 Ina-Schaeffler Kg Elektrischer Nockenwellenversteller
DE102004038681A1 (de) 2004-08-10 2006-06-01 Schaeffler Kg Elektromotorischer Nockenwellenversteller
DE69929831T2 (de) 1998-11-10 2006-10-05 Remy International, Inc., Anderson Anlassermotoranordnung
EP1762732A1 (fr) 2000-09-29 2007-03-14 Federal-Mogul Wiesbaden GmbH Palier de vilebrequin
DE102008039009A1 (de) 2008-08-21 2010-02-25 Schaeffler Kg Nockenwellenversteller
DE102008050826A1 (de) * 2008-10-08 2010-04-15 Schaeffler Kg Verstellvorrichtung zur Lageveränderung einer in Exzenterbuchsen gelagerten Kurbelwelle eines Verbrennungsmotors
DE102012204441A1 (de) 2011-03-21 2012-09-27 Denso Corporation Verfahren und Vorrichtung zur Erkennung eines Verlaufs einer Straße für Fahrzeuge
DE102013220220A1 (de) 2013-10-08 2015-04-09 Schaeffler Technologies Gmbh & Co. Kg Nockenwellenverstellvorrichtung
DE102015206933A1 (de) 2015-04-16 2016-10-20 Bühler Motor GmbH Getriebemotor

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012205441A1 (de) 2012-04-03 2013-10-10 Zf Friedrichshafen Ag Anordnung eines Anbaumoduls und eines Grundgetriebes sowie Montageverfahren

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6018640A (ja) 1983-07-08 1985-01-30 Toshiba Corp 駆動装置
JPS6037442A (ja) * 1983-08-09 1985-02-26 Toshiba Corp 駆動装置
US4800766A (en) * 1987-02-25 1989-01-31 Mitsubishi Denki Kabushiki Kaisha Coaxial type starter
DE69929831T2 (de) 1998-11-10 2006-10-05 Remy International, Inc., Anderson Anlassermotoranordnung
EP1154134A2 (fr) 2000-05-09 2001-11-14 Nissan Motor Company, Limited Moteur à combustion interne avec taux de compression variable
EP1307642B1 (fr) 2000-08-08 2004-05-19 DaimlerChrysler AG Moteur a combustion interne a piston alternatif, a taux de compression variable
EP1762732A1 (fr) 2000-09-29 2007-03-14 Federal-Mogul Wiesbaden GmbH Palier de vilebrequin
DE10315151A1 (de) 2003-04-03 2004-10-14 Daimlerchrysler Ag Vorrichtung zur relativen Winkelverstellung einer Nockenwelle gegenüber dem antreibenden Antriebsrad
DE102004009128A1 (de) 2004-02-25 2005-09-15 Ina-Schaeffler Kg Elektrischer Nockenwellenversteller
DE102004038681A1 (de) 2004-08-10 2006-06-01 Schaeffler Kg Elektromotorischer Nockenwellenversteller
DE102008039009A1 (de) 2008-08-21 2010-02-25 Schaeffler Kg Nockenwellenversteller
DE102008050826A1 (de) * 2008-10-08 2010-04-15 Schaeffler Kg Verstellvorrichtung zur Lageveränderung einer in Exzenterbuchsen gelagerten Kurbelwelle eines Verbrennungsmotors
DE102012204441A1 (de) 2011-03-21 2012-09-27 Denso Corporation Verfahren und Vorrichtung zur Erkennung eines Verlaufs einer Straße für Fahrzeuge
DE102013220220A1 (de) 2013-10-08 2015-04-09 Schaeffler Technologies Gmbh & Co. Kg Nockenwellenverstellvorrichtung
DE102015206933A1 (de) 2015-04-16 2016-10-20 Bühler Motor GmbH Getriebemotor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220243620A1 (en) * 2019-01-16 2022-08-04 Schaeffler Technologies AG & Co. KG Harmonic drive
US11686225B2 (en) * 2019-01-16 2023-06-27 Schaeffler Technologies AG & Co. KG Harmonic drive

Also Published As

Publication number Publication date
DE102016207927B4 (de) 2018-07-26
DE102016207927A1 (de) 2017-11-09

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