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WO2009141265A1 - Actionneur comprenant un système de blocage de couple de charge - Google Patents

Actionneur comprenant un système de blocage de couple de charge Download PDF

Info

Publication number
WO2009141265A1
WO2009141265A1 PCT/EP2009/055859 EP2009055859W WO2009141265A1 WO 2009141265 A1 WO2009141265 A1 WO 2009141265A1 EP 2009055859 W EP2009055859 W EP 2009055859W WO 2009141265 A1 WO2009141265 A1 WO 2009141265A1
Authority
WO
WIPO (PCT)
Prior art keywords
actuator
spindle nut
wrap spring
motor
actuator according
Prior art date
Application number
PCT/EP2009/055859
Other languages
German (de)
English (en)
Inventor
Ulrich Grau
Manfred Kraus
Harald Hochmuth
Wolfgang Reiik
Original Assignee
Schaeffler 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 Kg filed Critical Schaeffler Kg
Publication of WO2009141265A1 publication Critical patent/WO2009141265A1/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
    • F16D41/00—Freewheels or freewheel clutches
    • F16D41/20—Freewheels or freewheel clutches with expandable or contractable clamping ring or band
    • F16D41/206—Freewheels or freewheel clutches with expandable or contractable clamping ring or band having axially adjacent coils, e.g. helical wrap-springs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G7/00—Pivoted suspension arms; Accessories thereof
    • B60G7/006—Attaching arms to sprung or unsprung part of vehicle, characterised by comprising attachment means controlled by an external actuator, e.g. a fluid or electrical motor
    • 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
    • F16D7/00—Slip couplings, e.g. slipping on overload, for absorbing shock
    • F16D7/02—Slip couplings, e.g. slipping on overload, for absorbing shock of the friction type
    • F16D7/022—Slip couplings, e.g. slipping on overload, for absorbing shock of the friction type with a helical band or equivalent member co-operating with a cylindrical torque limiting coupling surface
    • 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
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • F16H25/24—Elements essential to such mechanisms, e.g. screws, nuts
    • F16H25/2454—Brakes; Rotational locks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
    • B60G2202/40—Type of actuator
    • B60G2202/42—Electric actuator
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
    • B60G2202/40—Type of actuator
    • B60G2202/44—Axial actuator, e.g. telescopic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/40—Auxiliary suspension parts; Adjustment of suspensions
    • B60G2204/419—Gears
    • 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
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • F16H25/24—Elements essential to such mechanisms, e.g. screws, nuts
    • F16H25/2454—Brakes; Rotational locks
    • F16H2025/2463—Brakes; Rotational locks using a wrap spring brake, i.e. a helical wind up spring for braking or locking

Definitions

  • the invention relates to an actuator with a motor and a driven part for connection to an actuating element and with a load torque lock for blocking the driven part to avoid unwanted actuating movements.
  • Generic actuators can be used for example in motor vehicles in the chassis.
  • an actuator can be assigned to the individual wheels in a suspension, which is independently controllable and performs the desired adjustment of the body-side control element of the wheel guide.
  • a suspension for motor vehicles can be taken from DE 100 11 142 A1, in which a wheel-guiding element of a suspension designed as a link or adjusting element is connected at one end to a wheel carrier and is articulated at its second end by an actuator.
  • the actuator comprises an electric motor and a ball screw, the threaded spindle is designed as a driven member which articulates the wheel guide via a hinge.
  • Such actuators take over safety-relevant functions.
  • an actuator with a locking mechanism which blocks the output part of the actuator, when the driving force of the actuator at the output part is smaller than an outer external force acting on the output part.
  • the actuator can be used, for example, for active adjustment. ment of the camber of a wheel of a motor vehicle can be used. From the outside in the wheel initiated shocks are forwarded only to the output part of the actuator. An introduction of these forces in the actuator to the motor is prevented because the driven part is blocked by the locking mechanism.
  • the locking mechanism is designed as a switchable Klemmrollengesperre.
  • WO 2003/029680 A1 includes a drive unit with wrap spring brake, in which a braking or blocking effect is achieved by means of a coil acting under bias against a starting member wrap. In this way, a rotation of the driven or the drive shaft is prevented in non-driven drive shaft and acting on the output shaft loads.
  • Such drive units are used for example as tubular motors for the electric drive of a winding shaft of a roller shutter or the like. Due to the blocking effect prevents the roller shutter unwinds due to its own weight coupled to the drive shaft winding shaft and the shutter closes eigentätig.
  • the object of the present invention is therefore to provide an actuator with a load moment lock, in which a stick-slip effect is to be effectively avoided even with dynamic adjustment of the actuator.
  • Weight- Torque lock should be easy to install in the actuator and cause only a small additional cost.
  • an actuator according to the appended claim 1 is used.
  • An inventive actuator is characterized in that a load torque lock is formed by a wrap spring, which is provided between a stationary housing of the actuator and a drive part.
  • the wrap is oversize, d. H. arranged with a press fit on a ring connected to the housing and has at its two ends outwardly bent driver elements which cooperate with a provided on a drive driver, so that upon rotation of the drive first the wrap spring is released and then the drive part can rotate freely.
  • a significant advantage of the solution according to the invention is the fact that by using a load torque lock based on a wrap spring even with dynamic adjustment of the freewheel essentially no stick-slip effect and associated with this effect negative side effects occur.
  • the load torque lock can be easily integrated into the actuator.
  • a wrap spring freewheel used according to the invention comprises only a single wrap spring. Compared to previously known freewheels with Klemmroll- engesperre a wrap spring freewheel is therefore much simpler structure, which can save costs and not least also significantly reduces the maintenance effort.
  • the actuator comprises a motor and a ball screw with one connected to a driven part Threaded spindle and a driven by the motor spindle nut as a driving part.
  • the spindle nut is arranged circumferentially fend a ring, which is rigidly connected to a, for receiving the motor, the load torque lock and the ball screw drive housing.
  • the wrap spring is arranged between the ring and the spindle nut.
  • the wrap spring contracts in a locking position due to the friction in the winding direction and thus blocks the spindle nut.
  • the wrap spring In a release position, the wrap spring is opened against its winding direction and thus allows rotation of the spindle nut.
  • the wrap spring is opened against its winding direction.
  • the spindle nut can now rotate freely.
  • the threaded spindle is formed integrally with the driven part of the actuator. This results in both manufacturing technology and mounting advantages.
  • a bellows is attached to the housing and the driven part, which encloses the threaded spindle. The bellows is tight against the housing and the driven part. The bellows can prevent the ingress of contaminants into the ball screw drive.
  • the actuator according to the invention in an active suspension link of a motor vehicle, in particular for adjusting the camber, has proved to be advantageous. Due to its high reliability, the actuator according to the invention is particularly suitable for such safety-related applications. However, it should not be limited to the applications mentioned, other applications are quite possible.
  • FIG. 1 shows an actuator according to the invention in a longitudinal sectional view
  • FIG. 2 shows a wrap spring freewheel in a front view and a sectional view
  • FIG. 3 is an assembly drawing of the wrap spring freewheel according to FIG. 2.
  • Fig. 1 shows an actuator according to the invention in a longitudinal sectional view.
  • the actuator according to the invention comprises a motor designed as an electric motor 01 with a stator 02 and a rotor 03.
  • the rotor 03 also serves as a motor shaft.
  • the electric motor 01 is arranged within a housing 04.
  • the actuator according to the invention further comprises a trained as a ball screw gear with a spindle nut 06, which acts as a drive part, and a threaded spindle 07 as a driven part.
  • the spindle nut 06 is mounted in the housing 04 via a roller bearing 08.
  • the threaded spindle 07 is designed in one piece with the driven part 10 in the embodiment shown. Between the spindle nut 06 and the threaded spindle 07 balls 11 are arranged, which roll on raceways 12, 13 of the spindle nut 06 and the threaded spindle 07 and rotate in endless ball tracks. A rotation of the spindle nut 06 is converted into a translation of the threaded spindle 07.
  • the threaded spindle 07 or the driven part 10 projects beyond the housing 04 on the front side (shown on the right).
  • the actuator is provided on this side with a bellows 15.
  • One end of the bellows 15 is attached to the output part 10 opposite end face of the housing 04.
  • the other end of the bellows 15 is connected to the output member 10.
  • the bellows 15 is close to the housing 04 and the output member 10 at. As a result, the threaded spindle 07 is completely sealed to the outside and can not pollute.
  • the spindle nut 06 encompassing a ring 17 is arranged with a U-shaped profile, which is rigidly connected to the housing 04.
  • wrap spring 18 is arranged on the ring 17 . Between wrap spring 18 and ring 14 is an interference fit.
  • FIG. 2 shows in Figure a) a front view and in Figure b) is a sectional view along the section line AA in Figure a).
  • Fig. 3 is an assembly drawing of the wrap spring freewheel is shown.
  • the actuator works as follows: To trigger a setting process, the electric motor 01 is actuated. About a driver 20 (see FIGS. 2 and 3) of the electric motor 01, the wrap spring 18 is opened against its winding direction. For this purpose, two outwardly bent ends 21 are formed on the wrap spring 18.
  • the ends 21 are moved depending on the direction of rotation of the motor in the direction of the rotary arrows 22, 23, whereby the wrap spring 18 is opened and thereby lifts off the ring 17.
  • the spindle nut 06 now has enough space to turn, driven by the driver 20 to rotate.
  • the spindle nut 06 has two, partially in the circumferential direction extending stop segments 24.
  • the wrap 18 rotates at angetriebner spindle nut 06 with.
  • the rotation of the spindle nut 06 is converted into a translation of the threaded spindle 07.
  • the threaded spindle 07 is extended out of the housing 04 or retracted into the housing 04.
  • the opening of the wrap spring 18 is independent of the direction of rotation of the motor right or left. LIST OF REFERENCE NUMBERS

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)

Abstract

L’invention concerne un actionneur comprenant un moteur (01) et une partie de sortie (10) pour le raccordement à un élément de réglage ainsi qu’un système de blocage de couple de charge destiné à bloquer la partie de sortie (10) pour éviter des mouvements de réglage indésirables. L’invention se caractérise en ce que le système de blocage de couple de charge comporte un ressort enroulé (18).
PCT/EP2009/055859 2008-05-23 2009-05-14 Actionneur comprenant un système de blocage de couple de charge WO2009141265A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200810024910 DE102008024910A1 (de) 2008-05-23 2008-05-23 Aktuator mit einer Lastmomentsperre
DE102008024910.6 2008-05-23

Publications (1)

Publication Number Publication Date
WO2009141265A1 true WO2009141265A1 (fr) 2009-11-26

Family

ID=41050383

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2009/055859 WO2009141265A1 (fr) 2008-05-23 2009-05-14 Actionneur comprenant un système de blocage de couple de charge

Country Status (2)

Country Link
DE (1) DE102008024910A1 (fr)
WO (1) WO2009141265A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019078121A1 (fr) * 2017-10-19 2019-04-25 日本精工株式会社 Liaison et suspension extensibles-contractiles
US10829155B2 (en) 2017-10-19 2020-11-10 Nsk Ltd. Suspension operation system and suspension operation terminal
US10940730B2 (en) 2017-10-19 2021-03-09 Nsk Ltd. Extension-retraction link and suspension

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010022891A1 (de) * 2010-06-07 2011-12-08 Schaeffler Technologies Gmbh & Co. Kg Schlingfedermechanismus
DE102010052920A1 (de) * 2010-11-30 2012-05-31 Schaeffler Technologies Gmbh & Co. Kg Fahrwerkaktuator
DE102011006301A1 (de) 2011-03-29 2012-10-04 Schaeffler Technologies Gmbh & Co. Kg Aktuator
DE102012009149B4 (de) 2011-05-12 2023-03-02 Liebherr-Aerospace Lindenberg Gmbh Bidirektional wirkende Rotationssperre bzw. Sperre, ein Bremssystem sowie ein Gewindespindelantrieb
ITBO20120006A1 (it) * 2012-01-05 2013-07-06 Ferrari Spa Attuatore lineare elettromagnetico con dispositivo frenante per variare la geometria di una sospensione attiva di una vettura
ITBO20120005A1 (it) * 2012-01-05 2013-07-06 Ferrari Spa Attuatore lineare elettromagnetico per variare la geometria di una sospensione attiva di una vettura
DE102013211230A1 (de) 2013-06-17 2014-12-18 Schaeffler Technologies Gmbh & Co. Kg Vorrichtung zum Lenken einer Hinterachse eines Kraftfahrzeugs
DE102014209939A1 (de) 2014-05-26 2015-11-26 Schaeffler Technologies AG & Co. KG Getriebeanordnung mit Sperrfunktion
DE102014213001A1 (de) 2014-07-04 2016-01-07 Schaeffler Technologies AG & Co. KG Aktuator
DE102014213121A1 (de) 2014-07-07 2016-01-07 Schaeffler Technologies AG & Co. KG Fahrwerksaktuator
DE102015220168A1 (de) 2014-12-03 2016-06-23 Schaeffler Technologies AG & Co. KG Riementrieb und zugehöriger elektromechanischer Aktuator
DE102015201596B4 (de) 2015-01-30 2018-04-05 Schaeffler Technologies AG & Co. KG Sperrmechanismus für einen Spindeltrieb
DE102015215665A1 (de) 2015-08-18 2017-02-23 Schaeffler Technologies AG & Co. KG Getriebe, insbesondere im Fahrwerksbereich
DE102015219243A1 (de) 2015-10-06 2017-04-06 Schaeffler Technologies AG & Co. KG Drehantriebvorrichtung insbesondere für einen Spindeltrieb
DE102015222069A1 (de) 2015-11-10 2017-05-11 Schaeffler Technologies AG & Co. KG Getriebe mit Sperrmechanismus
DE112016005194B4 (de) * 2015-11-13 2024-11-21 Schaeffler Technologies AG & Co. KG Aktor
DE102016204191A1 (de) 2016-03-15 2017-09-21 Schaeffler Technologies AG & Co. KG Wälzlager
DE102018116134A1 (de) 2018-07-04 2020-01-09 Schaeffler Technologies AG & Co. KG Elektromechanischer Aktuator mit stufenloser Bremseinrichtung
DE102018129103A1 (de) 2018-11-20 2020-05-20 Schaeffler Technologies AG & Co. KG Hinterachslenkung für ein Kraftfahrzeug
DE102018129372A1 (de) 2018-11-22 2020-05-28 Schaeffler Technologies AG & Co. KG Aktuator einer Hinterachslenkung eines Kraftfahrzeugs
DE102019112480B3 (de) * 2019-05-13 2020-02-20 Schaeffler Technologies AG & Co. KG Fahrwerksaktuator und Verfahren zum Betrieb einer Getriebeanordnung eines Fahrwerksaktuators

Citations (4)

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Publication number Priority date Publication date Assignee Title
US5195721A (en) * 1990-05-04 1993-03-23 Ava International Corporation Fail safe valve actuator
EP0685662A2 (fr) * 1994-05-31 1995-12-06 Linak A/S Actionneur à déplacement linéaire
US20050039553A1 (en) * 2003-08-22 2005-02-24 Yuan Chen Linear actuator
DE102005023250A1 (de) * 2005-04-28 2006-11-16 Schaeffler Kg Aktuator

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DE7537010U (de) 1975-11-21 1976-06-16 Holland-Letz, Guenter, 4794 Schloss- Neuhaus Schlingfederfreilauf fuer beide drehrichtungen
DE10011142A1 (de) 2000-03-07 2001-09-13 Bayerische Motoren Werke Ag Radaufhängung für Kraftfahrzeuge
DE10146771A1 (de) 2001-09-22 2003-04-10 Valeo Auto Electric Gmbh Antriebseinheit mit Schlingfederbremse

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5195721A (en) * 1990-05-04 1993-03-23 Ava International Corporation Fail safe valve actuator
EP0685662A2 (fr) * 1994-05-31 1995-12-06 Linak A/S Actionneur à déplacement linéaire
US20050039553A1 (en) * 2003-08-22 2005-02-24 Yuan Chen Linear actuator
DE102005023250A1 (de) * 2005-04-28 2006-11-16 Schaeffler Kg Aktuator

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019078121A1 (fr) * 2017-10-19 2019-04-25 日本精工株式会社 Liaison et suspension extensibles-contractiles
JP6575722B1 (ja) * 2017-10-19 2019-09-18 日本精工株式会社 伸縮リンク及びサスペンション
US10829155B2 (en) 2017-10-19 2020-11-10 Nsk Ltd. Suspension operation system and suspension operation terminal
US10940730B2 (en) 2017-10-19 2021-03-09 Nsk Ltd. Extension-retraction link and suspension

Also Published As

Publication number Publication date
DE102008024910A1 (de) 2009-11-26

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