EP0575633A1 - Actuating mechanism with a geared motor with positive and automatic interlocking of position - Google Patents

Actuating mechanism with a geared motor with positive and automatic interlocking of position Download PDF

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Publication number
EP0575633A1
EP0575633A1 EP92108541A EP92108541A EP0575633A1 EP 0575633 A1 EP0575633 A1 EP 0575633A1 EP 92108541 A EP92108541 A EP 92108541A EP 92108541 A EP92108541 A EP 92108541A EP 0575633 A1 EP0575633 A1 EP 0575633A1
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EP
European Patent Office
Prior art keywords
driver
pawl
drive
free
gear
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
EP92108541A
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German (de)
French (fr)
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EP0575633B1 (en
Inventor
Peter Dipl -Ing. Michel (Fh)
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Siemens AG
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Siemens AG
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Publication date
Application filed by Siemens AG filed Critical Siemens AG
Priority to DE92108541T priority Critical patent/DE59200078D1/en
Priority to EP92108541A priority patent/EP0575633B1/en
Priority to US08/063,386 priority patent/US5404975A/en
Publication of EP0575633A1 publication Critical patent/EP0575633A1/en
Application granted granted Critical
Publication of EP0575633B1 publication Critical patent/EP0575633B1/en
Anticipated expiration legal-status Critical
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F11/00—Man-operated mechanisms for operating wings, including those which also operate the fastening
    • E05F11/38—Man-operated mechanisms for operating wings, including those which also operate the fastening for sliding windows, e.g. vehicle windows, to be opened or closed by vertical movement
    • E05F11/50—Crank gear with clutches or retaining brakes, for operating window mechanisms
    • E05F11/505—Crank gear with clutches or retaining brakes, for operating window mechanisms for vehicle windows
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/50—Application of doors, windows, wings or fittings thereof for vehicles
    • E05Y2900/53—Type of wing
    • E05Y2900/55—Windows
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/19—Gearing
    • Y10T74/19642—Directly cooperating gears
    • Y10T74/19698—Spiral
    • Y10T74/19828—Worm

Definitions

  • the invention relates to an adjustment drive with a geared motor with a position that can be fixed by positive self-locking according to claim 1; an adjustment drive with the features a) to c) of claim 1 is known from DE-A1-29 11 024.
  • a pawl is pivotably mounted in the driver under spring pressure in such a way that it is in the motor drive side as well as in the drive side drive
  • the sprocket engages, whereby during motor operation in one direction of rotation (lifting) the pawl in the form of a ratchet slides over the teeth of the sprocket without inhibition and in the other direction of rotation (lowering) it is released against the spring pressure by a stop cam or in the case of an output side Drive is pressed in this direction of rotation (lowering) by the spring pressure in the sense of a positive self-locking in the ring gear.
  • a tangential play between the driver on the one hand and the worm wheel on the other hand is only possible within the framework of the elastic flexibility of the damper element interposed in the driver between the worm wheel and the driver.
  • the grinding resistance between the slip ring and the gear housing is advantageously chosen such that, on the one hand, when driving with a motor drive, there is as little resistance as possible in the one or the other direction, but with drive-side drive in the other direction of rotation there is sufficient impact resistance for pivoting the pawl out of it Sprocket non-contact rest position is guaranteed in its positive self-locking locking to the sprocket;
  • Such a bias for the slip ring is achieved in a particularly simple manner in that it rests against the gear housing from a material and / or shape residual stress Plastic ring is formed, wherein preferably the first free-link cams or second pawl cams are integrally molded onto the plastic ring.
  • a worm wheel 2 is rotatably mounted about a gear axis 1.2, the external teeth 2.3 of which mesh with a worm shaft 7, which is part of a rotor shaft of an extended commutator motor, not shown here, which is flanged to the gear housing 1 is trained.
  • the gear housing 1 is closed on its open side by a gear housing cover 1.1.
  • the worm wheel 2 is interposed by an attenuator 5 in a tangentially elastic rotary driving connection with a driver 3, also rotatably mounted on the gear axis 1.2, with a drive shaft inner pinion 3.3, which is led out on the output side through the worm wheel, which is tangentially movable on the outside and through a bore in the gear cover 1.1.
  • the gear housing cover 1.1 is sealed with the interposition of sealing rings 1.11 and 1.12 both against the pot edge of the gear housing 1 and against the outer circumference of the output shaft inner pinion 3.3.
  • the worm wheel 2 which is preferably injection molded from plastic, engages with corresponding radial grooves of a damping member 5 integrally molded over its circumference in corresponding radial grooves of an attenuator 5.
  • the driver engages with tangential driving elongated holes 5.1 with integral radial overhanging cams 3.1 such that the tangential length of the elongated holes 5.1 results in tangential play in the rotational driving is possible between the worm wheel 2 on the one hand and the driver on the other hand beyond the tangential play of the elastic compliance of the damping member 5.
  • a plastic slip ring 4 is mounted axially below the ring gear 1.3 in the sense of a minimum grinding pressure, that it rests with contact shoulders 4.3 on the grinding surface of the gear housing 1 and is pressed radially against the grinding surface in the gear housing 1 by prestressing the spring bars 4.4 connecting the contact shoulders 4.3 when the slip ring 4 is pushed into the gear housing 1.
  • the slip ring 4 each has a first free-latch cam 4.1 - seen in the direction of rotation n 1 - in front of the pawl 6 and in the vicinity of its contact shoulder 4.3 and a second pawl cam 4.2 behind the pawl 6. Viewed in the direction of rotation n 1, an axial stop cam 2.2 of the worm wheel 2 also projects into the axial region of the first free-latch cam 4.1.
  • the worm wheel 2 In motor operation for lifting the window pane, the worm wheel 2 is driven via the worm shaft 7 in one direction of rotation n 1.
  • the worm wheel 2 is in contact with the damping member 5 and then after tangential stop of the driving cams 3.1 of the driver 3 via its driving webs 2.1 engaging positively in corresponding grooves of the damping member 5 one or the other end face of the elongated holes 5.1 also in elastically damped rotary driving with the driver 3.
  • the driver 3 is subsequently rotated in one direction of rotation n 1
  • the pawl 6 comes into contact with the first free-latch cam 4.1 so that when fully released from the Gear ring 1.3 of the slip ring 4 is also moved over the first free-click cam 4.1.
  • the attenuator 5 is again carried tangentially by the worm wheel 2 via the driving webs 2.1.
  • the driving cams 3.1 of the driver 3 strike the end face of the elongated holes 5.1 and thus set the driver 3 in motion in a cushioned manner
  • the stop cams 2.2 formed axially on the worm wheel 2 come into contact with the first free-click cams 4.1 of the Slip ring 4 that this is initially moved by a small tangential angle in the other direction of rotation n2 and thereby ensures that the pawl 6 is released.
  • the driver 3 executes a relative movement to the worm wheel 2 in such a way that, before tangential entrainment of the worm wheel 2, the free end of the pawl 6 pivoted free against the second pawl cam 4.2 of the slip ring 4 comes to rest. Due to the grinding resistance between the slip ring 4 and the gear housing 1 which receives this under slight radial pressure, the pawl 6 is brought into engagement with the ring gear 1.3 when the driver 3 moves in the other direction of rotation n 2.
  • the pawl 6 As soon as the free end of the pawl 6 comes into contact with the ring gear 1.3, the pawl 6 is self-lockingly fixed in its engagement position to the ring gear 1.3 with still further tangential movement of the driver 3 in the other direction of rotation n 2 and thus the pawl cam 4.2 relieved.
  • the grinding resistance between the slip ring 4 and the gear housing 1 is selected such that, on the one hand, when driving the motor drive in one or the other direction of rotation n 1 or n 2, as resistance-free as possible, but with the drive-side drive in the other direction of rotation n 2, there is sufficient impact resistance for pivoting the Pawl 6 is guaranteed in its positive self-locking latching in the ring gear 1.3.
  • the worm wheel or the driver or the pawls are designed in the sense of an axial plug-in assembly technique.

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  • Gear Transmission (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

A compact motor-vehicle window-lifter drive having low operating noise has the features: a worm wheel (2) drives a driver (3) with tangential play; a toothed ring (1.3) is provided axially concentrically to the driver (3) in a gear case (1); a blocking pawl (6) lockable with the toothed ring (1.3) in a self-locking pivoting position is mounted in the driver (3) in the manner of a toggle lever; a slip ring (4), respectively with a first free-movement boss (4.1) in front of and with a second blocking-movement boss (4.2) behind the blocking pawl (6), is rotatably mounted in the gear case (1) in a slipping manner, in such a way that the slip ring (4), with motor drive "raise", is pivoted by the driver (3) via the blocking pawl (6) bearing against the first free-movement boss (4.1) and thereby pivoted free out of the toothed ring (1.3), with motor drive "lower" is pivoted via the first free-movement boss (4.1) directly by the gear element (worm wheel) located on the drive side, and, with an output-side drive of the driver (3) in the "lower" direction of rotation, the blocking pawl (6) can be locked in a self-locking manner in the toothed ring (1.3) via the second blocking-movement boss (4.2). <IMAGE>

Description

Die Erfindung bezieht sich auf einen Verstellantrieb mit einem Getriebemotor mit durch formschlüssige Selbsthemmung fixierbarer Stellposition gemäß Anspruch 1; ein Verstellantrieb mit den Merkmalen a) bis c) des Anspruchs 1 ist durch die DE-A1-29 11 024 bekannt.The invention relates to an adjustment drive with a geared motor with a position that can be fixed by positive self-locking according to claim 1; an adjustment drive with the features a) to c) of claim 1 is known from DE-A1-29 11 024.

Bei der durch die DE-A1-29 11 024 bekannten Antriebsvorrichtung zum Verstellen von Fensterscheiben, Schiebedächern und dgl.von Kraftfahrzeugen ist in dem Mitnehmer eine Sperrklinke derart unter Federdruck schwenkbar gelagert, daß sie einerseits sowohl bei motorischem antriebsseitigen als auch bei abtriebsseitigen Antrieb in den Zahnkranz einrastet, wobei beim motorischen Betrieb in der einen Drehrichtung (Heben) die Sperrklinke in Form einer Ratsche ohne Hemmung über die Zähne des Zahnkranzes gleitet und in der anderen Drehrichtung (Senken) durch einen Anschlag-Nocken entgegen dem Federdruck freigeklinkt bzw. bei einem abtriebsseitigen Antrieb in dieser Drehrichtung (Senken) durch den Federdruck im Sinne einer formschlüssigen Selbsthemmung in den Zahnkranz gedrückt wird. Ein Tangentialspiel zwischen dem Mitnehmer einerseits und dem Schneckenrad andererseits ist nur im Rahmen der elastischen Nachgiebigkeit des in der Mitnahme zwischen dem Schneckenrad und dem Mitnehmer zwischengeschalteten Dämpferelement möglich.In the drive device known from DE-A1-29 11 024 for adjusting window panes, sunroofs and the like of motor vehicles, a pawl is pivotably mounted in the driver under spring pressure in such a way that it is in the motor drive side as well as in the drive side drive The sprocket engages, whereby during motor operation in one direction of rotation (lifting) the pawl in the form of a ratchet slides over the teeth of the sprocket without inhibition and in the other direction of rotation (lowering) it is released against the spring pressure by a stop cam or in the case of an output side Drive is pressed in this direction of rotation (lowering) by the spring pressure in the sense of a positive self-locking in the ring gear. A tangential play between the driver on the one hand and the worm wheel on the other hand is only possible within the framework of the elastic flexibility of the damper element interposed in the driver between the worm wheel and the driver.

Eine demgegenüber gleich kompakte, jedoch auch in sämtlichen motorischen Betriebsarten vollständig freigeklinkte und somit nicht geräuschbehaftete Antriebsverbindung zwischen dem Schneckenrad einerseits und über den Mitnehmer der Abtriebswelle andererseits ist erfindungsgemäß durch den Verstellantrieb gemäß den Merkmalen des Anspruchs 1 möglich; vorteilhafte Ausgestaltungen dieser Erfindung sind jeweils Gegenstand der Unteransprüche.In contrast, the drive connection between the worm wheel, on the one hand, and via the driver of the output shaft, on the other hand, is equally compact, but also completely unlatched in all motor operating modes and therefore not subject to noise, according to the invention by the adjustment drive according to the features of claim 1; advantageous embodiments of this invention are the subject of the dependent claims.

Bei dem erfindungsgemäßen Verstellantrieb ist gewährleistet, daß die im Fall einer gewünschten Selbsthemmung in dem Zahnkranz formschlüssig aufgrund ihrer Kniehebel-Wirkung fixierten Sperrklinken durch den Schleifring in einer Ruhestellung vollständig freigeklinkt und somit berührungslos zum Zahnkranz zurückgezogen und im Fall eine gewünschten Selbsthemmung durch die Relativbewegung zwischen dem Mitnehmer und dem Schleifring in ihre selbsthemmende Einklink-Arbeitsposition unter Verzicht auf alternde Federelemente gebracht werden können.In the case of the adjustment drive according to the invention, it is ensured that the pawls which are positively fixed in the toothed ring in the case of a desired self-locking in the toothed ring effect due to their toggle lever action are completely released by the slip ring in a rest position and thus withdrawn without contact to the ring gear and in the case of a desired self-locking by the relative movement between the Carriers and the slip ring can be brought into their self-locking engagement position without the need for aging spring elements.

Der Schleifwiderstand zwischen dem Schleifring und dem Getriebegehäuse ist in vorteilhafter Weise derart gewählt, daß einerseits bei motorischem Antrieb seine Mitnahme in der einen oder anderen Richtung möglichst widerstandslos gegeben, jedoch bei abtriebsseitigem Antrieb in der anderen Drehrichtung ein hinreichender Anschlagwiderstand zur Verschwenkung der Sperrklinke aus ihrer zum Zahnkranz berührungslosen Ruhestellung in ihre formschlüssig selbsthemmende Verrastung zum Zahnkranz gewährleistet ist; in besonders einfacher Weise wird eine derartige Vorspannung für den Schleifring dadurch erreicht, daß er aus einem unter Material- und/oder Formeigenspannung gegen das Getriebegehäuse anliegenden Kunststoffring gebildet ist, wobei vorzugsweise an den Kunststoffring die ersten Freilink-Nocken bzw. zweiten Sperrklink-Nocken einstückig angespritzt sind.The grinding resistance between the slip ring and the gear housing is advantageously chosen such that, on the one hand, when driving with a motor drive, there is as little resistance as possible in the one or the other direction, but with drive-side drive in the other direction of rotation there is sufficient impact resistance for pivoting the pawl out of it Sprocket non-contact rest position is guaranteed in its positive self-locking locking to the sprocket; Such a bias for the slip ring is achieved in a particularly simple manner in that it rests against the gear housing from a material and / or shape residual stress Plastic ring is formed, wherein preferably the first free-link cams or second pawl cams are integrally molded onto the plastic ring.

Die Erfindung sowie weitere vorteilhafte Ausgestaltungen der Erfindung gemäß Merkmalen der Unteransprüche werden im folgenden anhand eines schematisch dargestellten Ausführungsbeispiels in der Zeichnung näher erläutert; darin zeigen

FIG 1
in einem axial Längsschnitt gemäß Schnittverlauf I-I in FIG 3 den Getriebeteil mit integrierter Selbsthemmung für einen Kraftfahrzeug-Fensterheberantrieb
FIG 2
die axiale abtriebsseitige Draufsicht auf den Getriebeteil gemäß FIG 1 mit teilweise aufgeschnittenem Schneckenrad bzw. Mitnehmer mit in Freiklink- bzw. Ruhestellung befindlichen Sperrklinken
FIG 3
die Anordnung gemäß FIG 2 jedoch mit in Einklink- bzw. Selbsthemmungsstellung formschlüssig fixierten Sperrklinken.
The invention and further advantageous embodiments of the invention according to the features of the subclaims are explained in more detail below with reference to a schematically illustrated embodiment in the drawing; show in it
FIG. 1
in an axial longitudinal section according to section II in FIG 3, the gear part with integrated self-locking for a motor vehicle window regulator drive
FIG 2
the axial output-side top view of the gear part according to FIG 1 with partially cut worm wheel or driver with pawls in the free or rest position
FIG 3
the arrangement according to FIG 2, however, with pawls positively fixed in the latching or self-locking position.

In einem topfförmigen Getriebegehäuse 1 eines Kraftfahrzeug-Fensterhebers ist ein Schneckenrad 2 um eine Getriebeachse 1.2 drehbar gelagert, dessen Außenzahnung 2.3 mit einer Schneckenwelle 7 kämmt, die Teil einer in das Getriebegehäuse 1 verlängerten Rotorwelle eines hier nicht dargestellten, an das Getriebe gehäuse 1 angeflanschten Kommutatormotors ausgebildet ist. Das Getriebegehäuse 1 wird an seiner offenen Seite durch einen Getriebegehäusedeckel 1.1 abgeschlossen.In a pot-shaped gear housing 1 of a motor vehicle window lifter, a worm wheel 2 is rotatably mounted about a gear axis 1.2, the external teeth 2.3 of which mesh with a worm shaft 7, which is part of a rotor shaft of an extended commutator motor, not shown here, which is flanged to the gear housing 1 is trained. The gear housing 1 is closed on its open side by a gear housing cover 1.1.

Das Schneckenrad 2 steht unter Zwischenschaltung eines Dämpfungsgliedes 5 in tangential elastischer Drehmitnahmeverbindung mit einem ebenfalls auf der Getriebeachse 1.2 drehbar gelagerten Mitnehmer 3 mit einem Antriebswellen-Innenritzel 3.3, das durch das außen tangential beweglich aufliegende Schneckenrad und durch eine Bohrung des Getriebedeckels 1.1 abtriebsseitig herausgeführt ist. Der Getriebegehäusedeckel 1.1 ist unter Zwischenlage von Dichtringen 1.11 bzw. 1.12 sowohl gegenüber dem Topfrand des Getriebegehäuses 1 als auch gegenüber dem Außenumfang des Abtriebswellen-Innenritzels 3.3 abgedichtet.The worm wheel 2 is interposed by an attenuator 5 in a tangentially elastic rotary driving connection with a driver 3, also rotatably mounted on the gear axis 1.2, with a drive shaft inner pinion 3.3, which is led out on the output side through the worm wheel, which is tangentially movable on the outside and through a bore in the gear cover 1.1. The gear housing cover 1.1 is sealed with the interposition of sealing rings 1.11 and 1.12 both against the pot edge of the gear housing 1 and against the outer circumference of the output shaft inner pinion 3.3.

Zur tangential elastisch nachgiebigen und somit anschlagdämpfenden Drehmitnahme zwischen dem Schneckenrad 2 einerseits und dem Mitnehmer 3 andererseits greift das vorzugsweise aus Kunststoff gespritzte Schneckenrad 2 mit über seinen Umfang verteilt einstückig angegossenen radialen Mitnahme-Stegen 2.1 in korrespondierende radiale Nuten eines Dämpfungsgliedes 5 formschlüssig ein. Zur Drehmitnahme zwischen dem Dämpfungsglied 5 und dem ebenfalls vorzugsweise aus Kunststoff gespritzten Mitnehmer 3 greift dieser mit über seinen Umfang einstückig angeformten radialen Mitnehmer-Nocken 3.1 in tangentiale Mitnehmer-Langlöcher 5.1 derart ein, daß durch die tangentiale Länge der Langlöcher 5.1 ein Tangentialspiel in der Drehmitnahme zwischen dem Schneckenrad 2 einerseits und dem Mitnehmer andererseits über das Tangentialspiel der elastischen Nachgiebigkeit des Dämpfungsglieds 5 hinaus möglich ist.For tangentially elastically resilient and thus stop-damping rotary driving between the worm wheel 2 on the one hand and the driver 3 on the other hand, the worm wheel 2, which is preferably injection molded from plastic, engages with corresponding radial grooves of a damping member 5 integrally molded over its circumference in corresponding radial grooves of an attenuator 5. For rotational driving between the damping member 5 and the driver 3, which is also preferably injection-molded from plastic, the driver engages with tangential driving elongated holes 5.1 with integral radial overhanging cams 3.1 such that the tangential length of the elongated holes 5.1 results in tangential play in the rotational driving is possible between the worm wheel 2 on the one hand and the driver on the other hand beyond the tangential play of the elastic compliance of the damping member 5.

Konzentrisch zur Getriebeachse 1.2 sind am Innenumfang der Topfwand des Getriebegehäsues 1 Ausnehmungen in Form eines Zahnkranzes 1.3 mit Sägezahnprofilierung vorgesehen. Axial unterhalb des Zahnkranzes 1.3 ist ein Kunststoff-Schleifring 4 derart im Sinne eines Mindestschleifandruckes gelagert, daß er mit Anlageschultern 4.3 an der Schleiffläche des Getriebegehäuses 1 anliegt und durch Vorspannung von die Anlageschultern 4.3 verbindenden Federstegen 4.4 bei der Eindrück-Montage des Schleifrings 4 in das Getriebegehäuse 1 radial an die Schleiffläche im Getriebegehäuse 1 angedrückt wird.Concentric to the gear axis 1.2, recesses in the form of a ring gear 1.3 with sawtooth profiling are provided on the inner circumference of the cup wall of the gear housing 1. A plastic slip ring 4 is mounted axially below the ring gear 1.3 in the sense of a minimum grinding pressure, that it rests with contact shoulders 4.3 on the grinding surface of the gear housing 1 and is pressed radially against the grinding surface in the gear housing 1 by prestressing the spring bars 4.4 connecting the contact shoulders 4.3 when the slip ring 4 is pushed into the gear housing 1.

Über den Umfang des Mitnehmers 3 verteilt sind Sperrklinken 6 mit Lagerzapfen 6.1 in Sperrklinken-Lageraufnahmen 3.2 des Mitnehmers 3 derart schwenkbar gelagert, daß kniehebelartig die Verbindungslinie zwischen dem radialen Endpunkt des freien Endes der Sperrklinke 6 und deren Lagerpunkt im Mitnehmer 3 einerseits und zwischen dem Lagerpunkt und der Getriebeachse 1.2 andererseits in einem stumpfen Winkel zur direkten Verbindunglinie zwischen dem freien Ende der Sperrklinke 6 und der Getriebeachse 1.2 verlaufen.Distributed over the circumference of the driver 3 pawls 6 with journals 6.1 in pawl bearing receptacles 3.2 of the driver 3 such that the connecting line between the radial end point of the free end of the pawl 6 and its bearing point in the driver 3 on the one hand and between the bearing point and the gear axis 1.2, on the other hand, run at an obtuse angle to the direct connecting line between the free end of the pawl 6 and the gear axis 1.2.

Der Schleifring 4 weist jeweils einen ersten Freiklink-Nocken 4.1 - in Drehrichtung n₁ gesehen - vor der Sperrklinke 6 und in Nähe seiner Anlageschulter 4.3 sowie einen zweiten Sperrklink-Nocken 4.2 hinter der Sperrklinke 6 auf. In Drehrichtung n₁ gesehen ragt weiterhin ein axialer Anschlag-Nocken 2.2 des Schneckenrades 2 bis in den axialen Bereich des ersten Freiklink-Nockens 4.1.The slip ring 4 each has a first free-latch cam 4.1 - seen in the direction of rotation n 1 - in front of the pawl 6 and in the vicinity of its contact shoulder 4.3 and a second pawl cam 4.2 behind the pawl 6. Viewed in the direction of rotation n 1, an axial stop cam 2.2 of the worm wheel 2 also projects into the axial region of the first free-latch cam 4.1.

Bei motorischem Betrieb zum Heben der Fensterscheibe wird das Schneckenrad 2 über die Schneckenwelle 7 in der einen Drehrichtung n₁ angetrieben. Das Schneckenrad 2 steht über seine formschlüssig in korrespondierenden Nuten des Dämpfungsgliedes 5 eingreifenden Mitnahme-Stege 2.1 in Drehmitnahme zunächst mit dem Dämpfungsglied 5 und nach tangentialem Anschlag der Mitnahmenocken 3.1 des Mitnehmers 3 an die eine oder andere Stirnseite der Langlöcher 5.1 auch in elastisch gedämpfter Drehmitnahme mit dem Mitnehmer 3. Beim anschließenden Drehen des Mitnehmers 3 in der einen Drehrichtung n₁ kommt die Sperrklinke 6 derart zur Anlage an den ersten Freiklink-Nocken 4.1, daß bei vollständiger Ausklinkung aus dem Zahnkranz 1.3 der Schleifring 4 über den ersten Freiklink-Nocken 4.1 mitbewegt wird. Dies bedeutet, daß bei motorischem Antrieb in der einen Drehrichtung n₁ eine Momentenübertragung von der Schneckenwelle 7 auf das Abtriebswellen-Innenritzel bei vollständiger Freiklinkung der Sperrklinke 6 aus dem Zahnkranz 1.3 und somit geräuschlos gewährleistet ist.In motor operation for lifting the window pane, the worm wheel 2 is driven via the worm shaft 7 in one direction of rotation n 1. The worm wheel 2 is in contact with the damping member 5 and then after tangential stop of the driving cams 3.1 of the driver 3 via its driving webs 2.1 engaging positively in corresponding grooves of the damping member 5 one or the other end face of the elongated holes 5.1 also in elastically damped rotary driving with the driver 3. When the driver 3 is subsequently rotated in one direction of rotation n 1, the pawl 6 comes into contact with the first free-latch cam 4.1 so that when fully released from the Gear ring 1.3 of the slip ring 4 is also moved over the first free-click cam 4.1. This means that with a motor drive in one direction of rotation n 1 a torque transmission from the worm shaft 7 to the output shaft inner pinion is ensured with complete free release of the pawl 6 from the ring gear 1.3 and thus noiseless.

Bei motorischem Antrieb in der anderen Drehrichtung n₂ wird wiederum zunächst das Dämpfungsglied 5 über die Mitnahmestege 2.1 von dem Schneckenrad 2 tangential mitgenommen. Bevor jedoch die Mitnahme-Nocken 3.1 des Mitnehmers 3 an die Stirnseite der Langlöcher 5.1 anschlagen und damit den Mitnehmer 3 anschlaggedämpft in Bewegung setzen, gelangen die an das Schneckenrad 2 axial angeformten Anschlag-Nocken 2.2 derart zur Anlage an die ersten Freiklink-Nocken 4.1 des Schleifringes 4, daß dieser um einen geringen tangentialen Winkel in der anderen Drehrichtung n₂ zunächst bewegt wird und dabei eine Freiklinkung der Sperrklinke 6 gewährleistet. Erst nach dieser Freiklinkung wird durch Anlage der Mitnahme-Nocken 3.1 an die zugehörigen Stirnseiten der Langlöcher 5.1 des Dämpfungsglied 5 auch der Mitnehmer 3 mit Anschlagdämpfung mitgenommen und damit der Abtriebswellen-Innenritzel 3.3 in Richtung n₂ (Senken) bewegt.In the case of a motor drive in the other direction of rotation n₂, the attenuator 5 is again carried tangentially by the worm wheel 2 via the driving webs 2.1. However, before the driving cams 3.1 of the driver 3 strike the end face of the elongated holes 5.1 and thus set the driver 3 in motion in a cushioned manner, the stop cams 2.2 formed axially on the worm wheel 2 come into contact with the first free-click cams 4.1 of the Slip ring 4 that this is initially moved by a small tangential angle in the other direction of rotation n₂ and thereby ensures that the pawl 6 is released. Only after this free locking is the driver 3 with stop damping carried along by contact of the driving cams 3.1 on the associated end faces of the elongated holes 5.1 of the damping member 5 and thus the output shaft inner pinion 3.3 is moved in the direction n 2 (lowering).

Bei einem abtriebsseitigen Antrieb der Mitnehmerscheibe 3, z.B. durch Erschütterungen oder durch ungewolltes händisches Aufdrücken der Fensterscheibe, führt der Mitnehmer 3 eine Relativbewegung zum Schneckenrad 2 derart aus, daß vor einer tangentialen Mitnahme des Schneckenrades 2 das zuvor freigeschwenkte freie Ende der Sperrklinke 6 gegen den zweiten Sperrklink-Nocken 4.2 des Schleifringes 4 zur Anlage kommt. Aufgrund des Schleifwiderstandes zwischen dem Schleifring 4 und dem diesen unter leichtem radialen Druck aufnehmenden Getriebegehäuse 1 wird bei der Bewegung des Mitnehmers 3 in der anderen Drehrichtung n₂ die Sperrklinke 6 zum Eingriff in den Zahnkranz 1.3 gebracht. Sobald das freie Ende der Sperrklinke 6 zur Anlage an den Zahnkranz 1.3 gekommen ist, wird die Sperrklinke 6 bei noch weiterer tangentialer Bewegung des Mitnehmers 3 in der anderen Drehrichtung n₂ aufgrund ihrer Kniehebelwirkung selbsthemmend in ihrer Eingriffslage zum Zahnkranz 1.3 fixiert und somit der Sperrklink-Nocken 4.2 entlastet.When the drive plate 3 is driven on the output side, for example by vibrations or by unintentional manual Pressing on the window pane, the driver 3 executes a relative movement to the worm wheel 2 in such a way that, before tangential entrainment of the worm wheel 2, the free end of the pawl 6 pivoted free against the second pawl cam 4.2 of the slip ring 4 comes to rest. Due to the grinding resistance between the slip ring 4 and the gear housing 1 which receives this under slight radial pressure, the pawl 6 is brought into engagement with the ring gear 1.3 when the driver 3 moves in the other direction of rotation n 2. As soon as the free end of the pawl 6 comes into contact with the ring gear 1.3, the pawl 6 is self-lockingly fixed in its engagement position to the ring gear 1.3 with still further tangential movement of the driver 3 in the other direction of rotation n 2 and thus the pawl cam 4.2 relieved.

Der Schleifwiderstand zwischen dem Schleifring 4 und dem Getriebegehäuse 1 ist derart gewählt, daß einerseits beim motorischen Antrieb seiner Mitnahme in der einen oder anderen Drehrichtung n₁ bzw. n₂ möglichst widerstandslos gegeben, jedoch bei abtriebsseitigem Antrieb in der anderen Drehrichtung n₂ ein hinreichender Anschlagwiderstand zur Verschwenkung der Sperrklinke 6 in ihre formschlüssig selbsthemmende Verrastung im Zahnkranz 1.3 gewährleistet ist.The grinding resistance between the slip ring 4 and the gear housing 1 is selected such that, on the one hand, when driving the motor drive in one or the other direction of rotation n 1 or n 2, as resistance-free as possible, but with the drive-side drive in the other direction of rotation n 2, there is sufficient impact resistance for pivoting the Pawl 6 is guaranteed in its positive self-locking latching in the ring gear 1.3.

Wie insbesondere aus FIG 2 und FIG 3 ersichtlich, sind das Schneckenrad bzw. der Mitnehmer bzw. die Sperrklinken einschließlich ihrer Lagerungen, ihrer Mitnahmen oder ihrer Verrastungen im Sinne einer axialen Steckmontagetechnik ausgebildet.As can be seen in particular from FIG. 2 and FIG. 3, the worm wheel or the driver or the pawls, including their bearings, their entrainment or their catches, are designed in the sense of an axial plug-in assembly technique.

Claims (8)

Verstellantrieb mit einem Getriebemotor mit durch formschlüssige Selbsthemmung fixierbarer Stellposition, insbesondere Kraftfahrzeug-Fensterheberantrieb, mit den Merkmalen: a) Ein erstes betriebsmäßig antriebsseitiges Getriebeelement, insbesondere ein Schneckenrad (2), steht mit Tangentialspiel in Mitnahmeverbindung mit einem achskonzentrischen Mitnehmer (3); b) mit dem Mitnehmer (3) ist eine Abtriebswelle kuppelbar (Abtriebswellen-Innenritzel 3.3); c) mit einem die Getriebeelemente aufnehmenden Getriebegehäuse (1) sind achskonzentrisch zu dem Mitnehmer (3) Ausnehmungen (Zahnkranz 1.3) verbunden; d) in dem Mitnehmer (3) ist zumindest eine mit den Ausnehmungen (Zahnkranz 1.3) in einer Selbsthemmungs-Schwenklage formschlüssig verrastbare Sperrklinke (6) kniehebelartig relativ zu ihrer Abstützung an dem Zahnkranz (1.3) bzw. der Getriebeachse (1.2) schwenkbar gelagert; e) in dem Getriebegehäuse (1) ist achskonzentrisch zu dem Mitnehmer (3) ein Schleifring (4) mit je einem ersten Freiklink-Nocken (4.1) vor und einem zweiten Sperrklink-Nocken (4.2) hinter der Sperrklinke (6) derart schleifend drehbar gelagert, daß der Schleifring (4) bei motorischem Antrieb (Heben) in der einen Drehrichtung (n₁) über die gegen den ersten Freiklink-Nocken (4.1) anliegende und dabei aus dem Zahnkranz (1.3) freigeschwenkte Sperrklinke (6) von dem Mitnehmer (3), bei motorischem Antrieb (Senken) in der anderen Drehrichtung (n₂) über den ersten Sperrklink-Nocken (4.1) direkt von dem antriebsseitigen Getriebeelement (Schneckenrad 2) und bei abtriebsseitigem Antrieb (Senken) des Mitnehmers (3) in der anderen Drehrichtung (n₁) die Sperrklinke (6) durch Anschlagen an den zweiten Sperrklink-Nocken (4.2) in den Zahnkranz (1.3) formschlüssig selbsthemmend verrastbar ist. Adjustment drive with a geared motor with a position that can be fixed by positive self-locking, in particular motor vehicle window lift drive, with the features: a) A first operationally drive-side gear element, in particular a worm wheel (2), is in tangential connection with an axially concentric driver (3); b) an output shaft can be coupled to the driver (3) (output shaft inner pinion 3.3); c) with a gear housing (1) receiving the gear elements, axially concentric to the driver (3) recesses (ring gear 1.3) are connected; d) in the driver (3) at least one pawl (6), which can be positively locked with the recesses (ring gear 1.3) in a self-locking swivel position, is pivotably mounted relative to its support on the ring gear (1.3) or the gear axis (1.2); e) in the gear housing (1), a slip ring (4), each with a first free-click cam (4.1) in front of and a second pawl cam (4.2) behind the pawl (6), can be rotated in such a manner that it can be rotated axially concentrically with the driver (3) mounted that the slip ring (4) with motor drive (lifting) in one direction of rotation (n₁) over the pawl (6) which bears against the first free-locking cam (4.1) and is thereby pivoted free from the ring gear (1.3) by the driver ( 3), with motor drive (lowering) in the other direction of rotation (n₂) via the first pawl cam (4.1) directly from the drive-side gear element (worm wheel 2) and with drive-side drive (lowering) of the driver (3) in the other direction of rotation (N₁) the pawl (6) can be locked in a form-locking, self-locking manner by striking the second pawl cam (4.2) in the ring gear (1.3). Verstellantrieb nach Anspruch 1 mit dem Merkmal: f) Der Schleifwiderstand zwischen dem Schleifring (4) und dem Getriebegehäuse (1) ist derart, daß einerseits bei motorischem Antrieb seine Mitnahme in der einen oder anderen Drehrichtung (n₁ bzw. n₂) möglichst widerstandslos gegeben, jedoch bei abtriebsseitigem Antrieb in der anderen Drehrichtung (n₂) ein hinreichender Anschlagwiderstand des zweiten Sperrklink-Nockens (4.2) zur Verschwenkung der Sperrklinke (6) in ihre formschlüssig selbsthemmende Verrastung im Zahnkranz (1.3) gewährleistet ist. Adjustment drive according to claim 1 with the feature: f) The grinding resistance between the slip ring (4) and the gear housing (1) is such that, on the one hand, when driving the motor in one or the other direction of rotation (n 1 or n 2), as resistance-free as possible, but with the drive on the output side in the other direction of rotation (n₂) a sufficient impact resistance of the second pawl cam (4.2) for pivoting the pawl (6) into its positive self-locking latch in the ring gear (1.3) is guaranteed. Verstellantrieb nach Anspruch 2 mit dem Merkmal: g) Der Schleifring (4) besteht aus einem unter Material- und/oder Formeigenspannung gegen das Getriebegehäuse (1) anliegenden Kunststoffring, mit axial, vorzugsweise einstückig, angeformten ersten Freiklink-Nocken (4.1) bzw. zweiten Sperrklink-Nocken (4.2). Adjustment drive according to claim 2 with the feature: g) The slip ring (4) consists of a plastic ring bearing against the gear housing (1) under material and / or internal stress, with axially, preferably in one piece, molded-on first free-click cams (4.1) or second pawl cams (4.2). Verstellantrieb nach einem der Ansprüche 1-3 mit dem Merkmal: h) Das erste betriebsmäßige antriebsseitige Getriebeelement (Schneckenrad 2) ist zur Freiklinkung der Sperrklinke (6) bei motorischem Antrieb in der anderen Drehrichtung (n₂) über axial, im Umfangskreis des ersten Freiklink-Nockens (4.1) angeordnete Anschlag-Nocken (2.2) in Mitnahme-Anschlagverbindung mit dem ersten Freiklink-Nocken (4.1) des Schleifrings (4) bringbar. Adjustment drive according to one of claims 1-3 with the feature: h) The first operational drive-side gear element (worm wheel 2) is for free locking of the pawl (6) with motor drive in the other direction of rotation (n₂) via axially, in the circumferential circle of the first free-click cam (4.1) arranged stop cams (2.2) in Carrier-stop connection can be made with the first free-click cam (4.1) of the slip ring (4). Verstellantrieb nach einem der Ansprüche 1-4 mit dem Merkmal: i) Das erste betriebsmäßige antriebsseitige Getriebeelement (Schneckenrad 2) steht über ein zumindest tangential elastisches Dämpfungsglied (5) in Mitnahmeverbindung mit dem Mitnehmer (3). Adjustment drive according to one of claims 1-4 with the feature: i) The first operational drive-side gear element (worm wheel 2) is in driving connection with the driver (3) via an at least tangentially elastic damping member (5). Verstellantrieb Anspruch 4 bzw. 5 mit dem Merkmal: j) Das elastische Dämpfungsglied (5) ist derart ausgebildet (Langlöcher 5.1), daß bei motorischem Antrieb in der anderen Drehrichtung (n₂) eine Mitnahme des Mitnehmers (3) durch das Schneckenrad (2) über das elastische Dämpfungselement (5) erst nach Freiklinken der Sperrklinke (6) über den Anschlag-Nocken (2.2) des Schneckenrades (2) gegeben ist. Adjustment drive claim 4 or 5 with the feature: j) The elastic damping member (5) is designed (elongated holes 5.1) that when the motor is driven in the other direction of rotation (n₂) entrainment of the driver (3) by the worm wheel (2) via the elastic damping element (5) only after it has been released the pawl (6) over the stop cam (2.2) of the worm wheel (2) is given. Verstellantrieb nach einem der Ansprüche 1-5 mit dem Merkmal: k) Mehrere, insbesondere drei, Sperrklinken (6), erste Freiklink-Nocken (4.1) und zweite Sperrklink-Nocken (4.2) sowie Anschlag-Nocken (2.2) sind über den Umfang des Getriebegehäuses (1) verteilt angeorndet. Adjustment drive according to one of claims 1-5 with the feature: k) Several, in particular three, pawls (6), first free-click cams (4.1) and second pawl cams (4.2) and stop cams (2.2) are arranged distributed over the circumference of the transmission housing (1). Verstellantrieb nach einem der Ansprüche 1-6 mit dem Merkmal: l) Das Schneckenrad (2) bzw. der Mitnehmer (3) bzw. die Sperrklinken (6) sind einschließlich ihrer Lagerungen, Mitnahmen oder Verrastungen im Sinne einer axialen Steckmontagetechnik ausgebildet. Adjustment drive according to one of claims 1-6 with the feature: l) The worm wheel (2) or the driver (3) or the pawls (6) including their bearings, entrainment or latching are designed in the sense of an axial plug-in assembly technique.
EP92108541A 1992-05-20 1992-05-20 Actuating mechanism with a geared motor with positive and automatic interlocking of position Expired - Lifetime EP0575633B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE92108541T DE59200078D1 (en) 1992-05-20 1992-05-20 Actuator with a geared motor with a position that can be fixed by positive self-locking.
EP92108541A EP0575633B1 (en) 1992-05-20 1992-05-20 Actuating mechanism with a geared motor with positive and automatic interlocking of position
US08/063,386 US5404975A (en) 1992-05-20 1993-05-18 Self-locking adjustment drive

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP92108541A EP0575633B1 (en) 1992-05-20 1992-05-20 Actuating mechanism with a geared motor with positive and automatic interlocking of position

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EP0575633A1 true EP0575633A1 (en) 1993-12-29
EP0575633B1 EP0575633B1 (en) 1994-03-02

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DE (1) DE59200078D1 (en)

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DE102013210810A1 (en) * 2013-06-10 2014-12-11 Robert Bosch Gmbh Transmission drive unit for a comfort drive in a motor vehicle
CN112810691A (en) * 2021-03-15 2021-05-18 奇瑞汽车股份有限公司 Electric steering column worm gear mechanism, electric steering system and vehicle

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US7770423B2 (en) * 2008-03-14 2010-08-10 Taiwan Fu Hsing Industrial Co., Ltd Electro-mechanical lock structure
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EP1717398A2 (en) * 2005-04-27 2006-11-02 Dura Global Technologies, Inc. Motor clutch for window regulator motor
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DE102013210810A1 (en) * 2013-06-10 2014-12-11 Robert Bosch Gmbh Transmission drive unit for a comfort drive in a motor vehicle
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CN112810691B (en) * 2021-03-15 2022-11-29 奇瑞汽车股份有限公司 Electric steering column worm gear mechanism, electric steering system and vehicle

Also Published As

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US5404975A (en) 1995-04-11
EP0575633B1 (en) 1994-03-02
DE59200078D1 (en) 1994-04-07

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