EP3911845A1 - Engrenage à onde de déformation - Google Patents

Engrenage à onde de déformation

Info

Publication number
EP3911845A1
EP3911845A1 EP19836787.2A EP19836787A EP3911845A1 EP 3911845 A1 EP3911845 A1 EP 3911845A1 EP 19836787 A EP19836787 A EP 19836787A EP 3911845 A1 EP3911845 A1 EP 3911845A1
Authority
EP
European Patent Office
Prior art keywords
wave gear
locking
positive
ring
securing
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.)
Granted
Application number
EP19836787.2A
Other languages
German (de)
English (en)
Other versions
EP3911845C0 (fr
EP3911845B1 (fr
Inventor
Daniel Heise
Marco HILDEBRAND
Bastian Hain
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 EP3911845A1 publication Critical patent/EP3911845A1/fr
Application granted granted Critical
Publication of EP3911845C0 publication Critical patent/EP3911845C0/fr
Publication of EP3911845B1 publication Critical patent/EP3911845B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • 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
    • F01L2303/00—Manufacturing of components used in valve arrangements
    • F01L2303/01—Tools for producing, mounting or adjusting, e.g. some part of the distribution
    • 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
    • F01L2303/00—Manufacturing of components used in valve arrangements
    • F01L2303/02—Initial camshaft settings

Definitions

  • the invention relates to a shaft gear suitable for use as an actuator of an electromechanical camshaft adjuster. Furthermore, the invention relates to a method for securing a wave gear against displacement, in particular during transport or during assembly.
  • a camshaft adjuster is known from DE 10 2016 216 594 B3, which can be secured against unintentional adjustment with the aid of an anti-rotation device.
  • the anti-rotation device of the known camshaft adjuster comprises a spring that prestresses the actuating gear.
  • the control gear of the camshaft adjuster is designed as a wave gear with a flexible ring as an elastic gear element.
  • a phase adjuster for internal combustion engines that is to say a camshaft adjuster, with a locking element is known from DE 10 2009 019 397 B4.
  • the locking element remains in a parking position.
  • a displacement of the locking element from its locking position into the parking position is possible by means of compressed oil or air.
  • the invention has for its object to provide a well-developed against the aforementioned prior art, secure against unintentional adjustment Wellge gear, given a particularly easy handling of the anti-rotation device to be given and interventions in the structure of components of the wave gear should be avoided as far as possible.
  • This object is achieved according to the invention by a wave gear with the features of claim 1.
  • the object is also achieved by a method for securing a wave gear against adjustment according to claim 10.
  • embodiments and advantages of the invention explained in connection with the security method apply analogously also for the device, ie the wave gear including anti-rotation device, and vice versa.
  • the wave gear comprises, in a known basic concept, three connecting elements, namely a drive element in the form of a housing which is rotatable as a whole, an output element to be connected to the shaft to be adjusted, in particular camshaft, and an adjusting element, and one between two of the three Connection elements effective anti-rotation device.
  • the anti-rotation device comprises a locking element that is concentric with all of the connection elements, positive-locking with one of the three connection elements and non-positively interacting with a further connection element. It has been shown that both an effective anti-rotation can be achieved and conventional wave gearboxes can be secured against adjustment, in particular during transport or during assembly, without any geometric modification of any components.
  • the securing element is a securing ring, in particular made of plastic, which can be placed in such a way that it interacts positively with the drive element and in a form-fitting manner with the adjusting element.
  • a positive locking anti-rotation contour is preferably formed on the part of the adjusting element by two bolts which are fixedly connected to an inner ring of a wave generator of the wave gear.
  • the two bolts can be part of an Oldham coupling which, as a compensating coupling, compensates for an axial offset between the shaft gear and an electric motor driving the adjusting element, that is to say the inner ring of the shaft generator together with the bolt.
  • the circlip can be efficiently manufactured using injection molding technology.
  • the retaining ring is profiled in a U-shape.
  • a positive locking anti-rotation contour which interacts directly with the bolts of the adjusting element, is formed by a corrugated inner section of the U-profile of the locking ring by the securing rings.
  • the securing ring in this embodiment has a smooth, outer section of the U-profile, which is provided for the positive locking against rotation relative to the drive element, that is to say the housing of the wave gear.
  • a radially outward-directed flange is preferably formed on the U-profile described by the locking ring, which flange rests on an end face of the drive element when the locking ring is inserted.
  • a flange suitable for manual removal of the locking ring from the connection elements can be molded onto this flange.
  • the locking ring has the advantage that it can be placed in any position of the adjusting element relative to the drive element between the elements mentioned.
  • the locking ring itself can be in any angle.
  • a camshaft adjuster which comprises the wave gear as an actuating gear
  • the electromotive provided for actuating the wave gear is to be attached to the wave gear
  • a defined angular relation between the drive element and the output element of the wave gear can be set and fixed with the aid of the locking ring .
  • the angular position of the adjusting element is irrelevant at this moment.
  • the equalizing coupling and the electric motor are to be attached to the adjusting element. This is only possible after the locking ring has been removed from the wave gear, which is easily possible without tools. An assembly of the electric motor with locked shaft gear is therefore excluded in principle.
  • the method with which the wave gear is secured against adjusting is characterized in that a locking ring between the adjusting element and the housing of the wave gear is used in such a way that at the same time a non-positive connection between the locking ring and the housing and a positive connection Connection between the locking ring and the Verstellele element is established.
  • the wave gear is not only suitable for use in an electromechanical camshaft adjuster, but also for industrial applications, for example in an industrial robot or in a machine tool.
  • FIG. 2 shows a sectional illustration of the arrangement according to FIG. 1,
  • Fig. 3 shows a locking ring of the wave gear.
  • a generally designated with the reference numeral 1 wave gear is part of an electric camshaft adjuster, not shown, which is used to adjust a camshaft of an internal combustion engine, namely a piston engine, in relation to its crankshaft.
  • the wave gear 1 used as an actuating gear is a three-shaft gear.
  • Three about a common axis, namely the axis of rotation of the camshaft, rotatable, each directly interacting with external components, ie components not attributable to the shaft drives 1, are generally referred to as connection elements 2, 9, 13.
  • the drive element 2 is constructed in several parts in the exemplary embodiment and comprises a chain wheel 3 which is driven by the crankshaft during operation of the camshaft adjuster, wherein it rotates at half the crankshaft speed.
  • the Abtriebsele element 13 is hen vorgese for rotationally fixed connection with the camshaft to be adjusted.
  • the adjusting element 9 is designed as an inner ring of a roller bearing 8, which is part of a wave generator 7.
  • the wave generator 7 is via a compensation clutch, namely Oldham coupling, driven by an electric motor, not shown, for example a brushless synchronous motor.
  • the compensating clutch has an Oldham disk, not shown, in which two bolts 14 engage when the camshaft adjuster is fully assembled.
  • the bolts 14 are fastened in the roller bearing inner ring and are assigned to the adjusting element 9.
  • the outer contour of the adjusting element 9 designed as a roller bearing ring deviates from a circular shape.
  • the adjusting element 9 forms a non-circular, elliptical raceway for rolling elements 10, namely balls.
  • an associated outer ring 11, in which the balls 10 roll is designed to be flexible, so that it permanently adapts to the non-circular shape of the adjusting element 9.
  • the outer ring 11 is in turn surrounded by a flexible gear element 12 which is externally toothed and also called the flex ring.
  • the external toothing of the flex ring 12 engages at two diametrically opposite points in the internal toothing of the chain wheel 3 and of the driven element 13.
  • the sprocket 3 is firmly connected by screws 6 to a housing element 4, which is also attributable to the drive element 2.
  • the drive element 2 is a housing cover 5, which is located on the face of the shaft gear 1 facing the camshaft to be adjusted. Through the housing cover 5, the driven element 13 is secured in the axial direction within the shaft drive 1.
  • the housing element 4 serves to secure the outer ring 11 and thus the entire wave generator 7 in the opposite axial direction within the wave gear 1.
  • the drive element 2, and the output element 13 is ensured in a manner known per se that a full rotation of the adjusting element 9 relative to the drive element 2 in a comparatively small pivoting between the drive element 2 and the Output element 13 is implemented.
  • a hitch be stage either between the flex ring 12 and the drive element 2 or between the flex ring's 12 and the output element 13 may be formed.
  • the translation stage of the wave gear is accordingly either the flex ring 12 and from the drive element 13 or between the flex ring 12 and the drive element 2 is formed.
  • the wave gear 1 is a plus gear
  • an anti-rotation device 15 is provided, which is formed on the one hand by two elements 2, 9, namely the drive element 2 and the adjusting element 9, which are attributable to the connecting elements of the corrugated gear 1, and on the other hand by a securing element 18 in the form of a securing ring is.
  • the locking ring 18 interacts on the outside with the drive element 2 and on the inside with the adjusting element 9.
  • the retaining ring 18, which is an injection molded plastic part writes a U-shaped profile 19.
  • an inner, corrugated section 20 is formed, which is to be attributed to a form-fitting anti-rotation device, which can be produced between the adjusting element 9 and the locking ring 18.
  • the positive locking against rotation is constructed from an inner anti-rotation contour 16 on the side of the adjusting element 9 and an outer anti-rotation contour 17 on the side of the locking ring 18.
  • the inner anti-rotation contour 16 by parts that are already present in the wave gear 1, namely by the bolts 14 , provided.
  • the associated outer anti-rotation contour 17 is in the form of the ring-shaped closed, corrugated section 20 of the locking ring 18.
  • the corrugated section 20 is concentrically surrounded by an outer, smooth From section 21, which is also formed by the U-profile 19 of the locking ring 18.
  • the outer, ring-shaped section 21 contacts a cylindrical inner circumferential surface of the housing element 4.
  • the smooth section 21 is part of a non-positive rotation lock between the securing ring 18 and the drive element 2.
  • a radially outwardly directed flange 22 of the securing ring 18 adjoins the outer, cylindrical section 21. In the arrangement according to FIGS. 1 and 2, this flange 22 abuts the housing element 4 on the end face. Furthermore, a tab 23 extending from the flange 22 can be seen, which serves for the simple manual removal of the locking ring 18 from the wave gear 1.
  • the electric motor of the camshaft adjuster can only be attached to the shaft gear 1 with the circlip 18 removed. Reference list of shaft gears

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)
  • Retarders (AREA)

Abstract

Un engrenage à onde de déformation (1) comprend trois éléments de raccordement (2, 9, 13), à savoir un élément menant (2), un élément mené (13) et un élément de déplacement (9), ainsi qu'un dispositif anti-rotation (15) agissant entre les éléments de raccordement (2, 9, 13), celui-ci comprenant un élément de fixation (18) qui est concentrique aux éléments de raccordement (2, 9, 13) et qui coopère par complémentarité de formes avec l'un des éléments de raccordement (9) et à force avec un autre élément de raccordement (2).
EP19836787.2A 2019-01-16 2019-12-17 Transmission à onde de déformation Active EP3911845B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019101107.8A DE102019101107B4 (de) 2019-01-16 2019-01-16 Wellgetriebe
PCT/DE2019/101099 WO2020147882A1 (fr) 2019-01-16 2019-12-17 Engrenage à onde de déformation

Publications (3)

Publication Number Publication Date
EP3911845A1 true EP3911845A1 (fr) 2021-11-24
EP3911845C0 EP3911845C0 (fr) 2024-02-21
EP3911845B1 EP3911845B1 (fr) 2024-02-21

Family

ID=69167554

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19836787.2A Active EP3911845B1 (fr) 2019-01-16 2019-12-17 Transmission à onde de déformation

Country Status (6)

Country Link
US (1) US11686225B2 (fr)
EP (1) EP3911845B1 (fr)
JP (1) JP7268166B2 (fr)
CN (2) CN113302380A (fr)
DE (1) DE102019101107B4 (fr)
WO (1) WO2020147882A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021105281A1 (de) 2021-03-04 2022-09-08 Schaeffler Technologies AG & Co. KG Elektromechanischer Nockenwellenversteller und Verfahren zum Betrieb eines Nockenwellenverstellers

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4930427B2 (ja) * 2008-03-27 2012-05-16 株式会社デンソー バルブタイミング調整装置の製造方法
DE102008022932B4 (de) 2008-05-09 2021-08-05 Schaeffler Technologies AG & Co. KG Montageanordnung eines Phasenstellers und Phasensteller
DE102008022931A1 (de) 2008-05-09 2009-11-12 Schaeffler Kg Anordnung zur Montage eines Phasenstellers
DE102009019397B4 (de) 2008-07-07 2017-11-23 Schaeffler Technologies AG & Co. KG Phasenversteller für Verbrennungsmotoren mit einem Verriegelungselement
US8424500B2 (en) 2009-08-06 2013-04-23 Delphi Technologies, Inc. Harmonic drive camshaft phaser with improved radial stability
US8584633B2 (en) 2009-08-06 2013-11-19 Delphi Technologies, Inc. Harmonic drive camshaft phaser with bias spring
DE102013204659A1 (de) 2013-03-18 2014-09-18 Schaeffler Technologies Gmbh & Co. Kg Nockenwellenversteller
WO2015187469A1 (fr) * 2014-06-05 2015-12-10 Borgwarner Inc. Dispositif de mise en phase de cames électrique avec planétaire fixe
JP6350365B2 (ja) * 2015-04-07 2018-07-04 株式会社デンソー バルブタイミング調整装置、バルブタイミング調整装置の製造に用いられるロック治具、および、バルブタイミング調整装置の製造方法
DE102016204426A1 (de) * 2016-03-17 2017-09-21 Schaeffler Technologies AG & Co. KG Elektrischer Wellenversteller
DE102016207927B4 (de) * 2016-05-09 2018-07-26 Schaeffler Technologies AG & Co. KG Stellantrieb
DE102016207930B3 (de) 2016-05-09 2017-08-10 Schaeffler Technologies AG & Co. KG Wellgetriebe
CN109196192A (zh) * 2016-05-31 2019-01-11 舍弗勒技术股份两合公司 调节传动机构
DE102016216594B3 (de) 2016-09-02 2017-11-02 Schaeffler Technologies AG & Co. KG Nockenwellenversteller
DE102016223474B3 (de) * 2016-11-25 2018-03-08 Schaeffler Technologies AG & Co. KG Verstellgetriebevorrichtung für eine Welle sowie Fahrzeug mit der Verstellgetriebevorrichtung
DE102017111035B3 (de) * 2017-05-22 2018-06-21 Schaeffler Technologies AG & Co. KG Nockenwellenversteller
CN107588177B (zh) * 2017-09-28 2024-06-18 深圳市领略数控设备有限公司 一种摆线针轮谐波传动装置

Also Published As

Publication number Publication date
EP3911845C0 (fr) 2024-02-21
JP7268166B2 (ja) 2023-05-02
CN113302380A (zh) 2021-08-24
US20220243620A1 (en) 2022-08-04
JP2022518453A (ja) 2022-03-15
CN116641772A (zh) 2023-08-25
US11686225B2 (en) 2023-06-27
EP3911845B1 (fr) 2024-02-21
WO2020147882A1 (fr) 2020-07-23
DE102019101107A1 (de) 2020-07-16
DE102019101107B4 (de) 2024-05-16

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