EP1117558A1 - Mecanisme de blocage manoeuvrable - Google Patents

Mecanisme de blocage manoeuvrable

Info

Publication number
EP1117558A1
EP1117558A1 EP99970063A EP99970063A EP1117558A1 EP 1117558 A1 EP1117558 A1 EP 1117558A1 EP 99970063 A EP99970063 A EP 99970063A EP 99970063 A EP99970063 A EP 99970063A EP 1117558 A1 EP1117558 A1 EP 1117558A1
Authority
EP
European Patent Office
Prior art keywords
clamping
slide
output shaft
housing
drive shaft
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.)
Withdrawn
Application number
EP99970063A
Other languages
German (de)
English (en)
Inventor
Harald Hochmuth
Dirk Quitzrau
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.)
IHO Holding GmbH and Co KG
Original Assignee
INA Waelzlager Schaeffler OHG
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 INA Waelzlager Schaeffler OHG filed Critical INA Waelzlager Schaeffler OHG
Publication of EP1117558A1 publication Critical patent/EP1117558A1/fr
Withdrawn legal-status Critical Current

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
    • F16D41/06—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface
    • F16D41/064—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface the intermediate members wedging by rolling and having a circular cross-section, e.g. balls
    • F16D41/066—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface the intermediate members wedging by rolling and having a circular cross-section, e.g. balls all members having the same size and only one of the two surfaces being cylindrical

Definitions

  • the present invention relates to switchable locking mechanisms.
  • a locking mechanism an output shaft is blocked in both directions of rotation with respect to a non-rotatable part, for example a housing, when a torque is introduced into the output shaft.
  • Clamping mechanisms of this type often provide a drive which transmits a torque to the output, so that elements connected downstream of the output shaft can be actuated.
  • the clamp connection between the output and the non-rotatable part is released in the selected direction of rotation.
  • Switchable locking devices can be used, for example, in gearboxes in which an output shaft is fixed in both directions of rotation when a torque is introduced into this output shaft.
  • Such gears are used, for example, in seat adjustments of motor vehicles or in devices for lifting or lowering windows in motor vehicles.
  • a torque introduced into the output shaft from the outside for example the load on the seat by a person, is introduced into a housing, for example, so that there is no rotational movement of the output.
  • a locking mechanism which is provided in a seat height adjustment of a seat.
  • the locking mechanism has two elements arranged one inside the other, of which the outer as
  • Housing formed element on its inner lateral surface a cylindrical see clamping track and of which the other element is designed as an output shaft and is provided on its lateral surface facing the cylindrical clamping track with a plurality of clamping ramps distributed over the circumference with opposite slope.
  • Each clamping ramp forms a wedge-shaped clamping gap with the cylindrical clamping track, into which a clamping roller is sprung. Since the imaginary tips of these wedge-shaped clamping gaps either face one another or face away from one another as shown here, the clamping rollers sprung into the clamping gap prevent the inner element from rotating in relation to the outer element in both directions of rotation.
  • the clamping rollers are spring-loaded into the clamping gap in their clamping position and in engagement with the clamping ramps and the cylindrical clamping track.
  • the pinch rollers are released, that is to say arranged in the release position, only the pinch rollers which are functionally relevant for this direction of rotation are released.
  • the pinch rollers are arranged in pockets of a cage with play in the circumferential directions, the cage being able to pivot slightly with respect to the inner element. This swivel path is used to unlock the pinch rollers from their assigned pin gaps.
  • a torque acts on the inner element, which is caused by a force acting on the seat. In the clamping position, such locking mechanisms hold the seat at its set height.
  • the object of the present invention is therefore to reliably prevent slippage between the clamped elements in the case of switchable clamping locks.
  • this object is achieved in that a non-rotatably connected slide with the output shaft is positively connected to the non-rotatable part in the clamping position of the clamping elements and is disengaged from the non-rotatable part in the released position of the clamping elements.
  • a torque can be introduced into the output shaft and transmitted to the non-rotatable part via the clamping elements.
  • there is a positive connection between the output and the housing so that unwanted slippage between the output and the non-rotatable part, for example the housing, as a result of vibrations is excluded.
  • the positive connection can be designed for low loads, since the loads are mainly transmitted via the locking mechanism and not via the positive connection between the output and the housing. In the case of swelling or changing loads that approach or pass through the value 0, the positive connection is achieved by these low dynamic loads, preferably at zero Passage claimed.
  • the positive connection can be designed for maximum torque loads.
  • the housing can be provided on its inner circumference with a cylindrical clamping track and the output shaft on its outer circumference with the clamping ramps.
  • the output shaft is designed as a hollow shaft and that the clamping ramps on the inner periphery of the hollow shaft and the cylindrical clamping path on the outer circumference of an axis-shaped part of the housing is formed.
  • the clamping ramps are formed on one end of the output shaft and the flat, annularly closed clamping path on one end of the housing.
  • the clamping track assigned to the housing is smooth in a sense that this clamping track is either flat or has a uniform curvature.
  • a further development according to the invention provides that a gear for converting a rotary movement of the drive shaft into a longitudinal displacement of the slide is arranged between the drive shaft and the slide.
  • the rotary movement of the drive shaft is thus initially used to cancel the positive connection between the slide and the housing, the slide being displaced.
  • the further rotation of the drive shaft is passed on to the output shaft.
  • a ramp provided on the slide and a system provided on the drive shaft and spaced from the axis of rotation of the drive shaft are provided for the ramp.
  • the system With the rotation of the drive shaft, the system is displaced in the circumferential direction, for example a pin arranged coaxially to the drive shaft. Since the slide is initially positively connected to the housing, it cannot follow this displacement of the pin in the circumferential direction, so that the pin presses against the ramp. Under the power of the ramp The longitudinally displaceable slide now forcibly deviates from the pin, the ramp — and thus also the slide — being displaced along the pin until the slide is finally out of engagement with the housing. A further rotary movement of the drive shaft can now be transferred to the output shaft. The inclination of the ramp determines how long the path of the slide is at a covered angle of rotation of the drive shaft.
  • the slide can be arranged to be movable parallel to the output shaft.
  • the ramp is then provided on one end of the slide.
  • the slide can be movably arranged transversely to the output shaft.
  • the ramp is then inclined to the axis along which axis the slide is moved.
  • An imaginary extension of the ramp thus intersects the axis at an angle which determines the ratio in which the slide is displaced with respect to an angle of rotation of the output shaft.
  • Two ramps with opposite slopes can work together with the drive shaft system. This has the advantage that the slider can be moved in a common longitudinal direction in both directions of rotation of the drive shaft in order to cancel the positive connection between the output shaft and the housing.
  • the ramp can also be provided on the output shaft and the system can be provided on the slide, the advantages described also occurring in such an arrangement since there is only a reverse arrangement of the ramp and system.
  • a further development according to the invention provides that the radially movable slide is provided with a triangular recess arranged transversely to the drive shaft, two adjoining walls of the triangular recess each forming a ramp.
  • the imaginary extensions of the ramps intersect the axis along which the slide is arranged.
  • the ramps preferably intersect this axis at the same angle, so that these imaginary extensions intersect at a common point on this axis.
  • the locking mechanism according to the invention can be provided with a spring such that the slide is displaced in order to release the positive connection against the spring force of this spring.
  • the advantage is that the slide springs back automatically under the restoring force of the spring and produces a positive connection between the output shaft and the housing when no torque is introduced into the drive shaft.
  • the positive connection can be made, for example, in that the slider and the housing are each provided with teeth that interlock to produce the positive connection. The smaller the part of the teeth, the more positions are available for the slide to make the positive connection.
  • FIG. 1 shows a longitudinal section through a locking mechanism according to the invention
  • FIG. 2 shows a cross section through the locking mechanism according to the invention from FIG. 1 along the line II -II,
  • FIG. 3 shows a further cross section along the line III-III
  • Figure 4 shows a longitudinal section through a further inventive
  • Locking mechanism, 5 shows a cross section through the locking mechanism according to the invention from FIG. 4 along the line V - V and
  • Figure 6 shows the locking mechanism according to the invention as in Figure 5, but with a positive connection removed.
  • a hollow cylindrical housing 1 in which an input shaft 2 and an output shaft 3 are arranged coaxially to one another. Between the housing 1 and the output shaft 3, pinch rollers 4 are arranged, via which a torque introduced into the output shaft 3 from outside can be introduced into the housing 1.
  • a ring gear 5 is arranged in the housing 1 in a rotationally fixed manner axially adjacent to the pinch rollers 4.
  • the ring gear 5 is provided with teeth 6 on its inner circumference.
  • a radially movable slide 7 is also provided with teeth 8 for engagement with the teeth 6 of the ring gear 5.
  • the slider 7 is clearly shown in FIG.
  • the slide 7 is guided in a guide 9 so as to be longitudinally displaceable.
  • the guide 9 made of plastic is rotatably connected to the output shaft 3.
  • a compression spring 10 is arranged, which holds the slide 7 in the illustration shown in a positive connection with the housing 1, the teeth 6, 8 of the ring gear 5 and the slide 7 interlocking.
  • the slide 7 is provided with a triangular recess 11 into which a pin 12 projects, which is connected to the drive shaft 2 in a rotationally fixed manner.
  • the output shaft 3 is provided with clamping ramps 13, 14, one clamping ramp 13 and one adjacent clamping ramp 14 are provided with opposite slopes.
  • the housing 1 is provided on its inner circumference with a cylindrical clamping track 15.
  • the cylindrical clamping track 15 and the clamping ramps 13, 14 delimit clamping gaps 16 into which the clamping rollers 4 are sprung.
  • a compression spring 17 is arranged, which springs the pinch rollers 4 into the nip 16 and thus keeps them ready for permanent clamping.
  • the drive shaft 2 is provided with three fingers 18 distributed over the circumference, which each engage with play in the circumferential direction between two adjacent pairs of pinch rollers.
  • FIGS. 4 to 6 show a further locking mechanism according to the invention, which differs from the clamping mechanism according to the invention described above in that a separate guide for the slide is not required.
  • FIG. 5 shows the slide 7, a guide 19 being connected in one piece to the output shaft 3.
  • the mode of operation of the present invention is explained in more detail below with reference to FIGS. 5 and 6.
  • Figure 5 shows the locking mechanism according to the invention in a position in which no torque is applied to the drive shaft 2.
  • the fingers 18 of the drive shaft 2 are in a neutral position, in the middle between two adjacent pairs of pinch rollers.
  • the positive connection between the output shaft 3 and the housing 1 is made in that the teeth 8 of the slider 7 engage in the teeth 6 of the ring gear 5.
  • the pin 12, which is non-rotatably connected to the drive shaft 2 is arranged at the base of the triangular recess 11. Two walls of the triangular recess 11 meeting in the base each form a ramp 20, 21 for the pin 12.
  • FIG. 6 shows the situation in which the pin 12 has reached the end of the ramp 21.
  • the slider 7 is out of engagement with the housing 1.
  • the fingers 18 of the drive shaft 2 keep the pinch rollers 4 relevant for the rotation of the output shaft 3 out of engagement with the pinch ramps 13 and the cylindrical clamping track 15.
  • the fingers 18 strike the Output shaft 3, so that further rotary movements of the drive shaft 2 are transmitted directly to the output shaft 3.
  • the switching path of the fingers 18 for unlocking the pinch rollers 4 until the fingers 18 strike the output shaft 3 on the one hand and the ramp path of the pin 12 until the positive connection between the housing 1 and the output shaft 3 is released are matched to one another in such a way that the output shaft 3 is not driven by the drive shaft 2 until the positive connection between the housing 1 and the output shaft 3 has been removed.
  • the output shaft 3 is loaded by the weight of the seat and possibly a person sitting on it in such a way that a torque is exerted. This torque is normally introduced into the housing 1 via the pinch rollers 4. If the seat is not occupied, the torque acting on the output shaft 3 is reduced.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)
  • Seats For Vehicles (AREA)
  • Clamps And Clips (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Transmission Devices (AREA)

Abstract

L'invention concerne un mécanisme de blocage manoeuvrable qui est pourvu d'un arbre de sortie (3) pouvant tourner par rapport à un boîtier (1). Ce mécanisme comporte en outre des éléments de blocage, en particulier des billes de blocage ou des rouleaux de blocage (4), qui, dans leur position de blocage, sont introduits dans des fentes de blocage (16) par des ressorts, ces fentes de blocage étant délimitées par une piste de blocage lisse (15) du boîtier (1) et par des rampes de blocage (13, 14) de l'arbre de sortie (3). En outre, un arbre d'entrée (2) sert à l'entraînement en rotation de l'arbre de sortie (3). Les éléments de blocage sont amenés dans une position de libération au moyen d'un dispositif, position dans laquelle les éléments de blocage sont libérés pour permettre la rotation de l'arbre de sortie (3). Un curseur (7) solidaire en rotation de l'arbre de sortie (3) est, lorsque les éléments de blocage sont en position de blocage, relié par liaison de forme au boîtier (1), et n'est plus en prise avec celui-ci lorsque les éléments de blocage sont en position de libération.
EP99970063A 1998-10-02 1999-09-14 Mecanisme de blocage manoeuvrable Withdrawn EP1117558A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19845365A DE19845365A1 (de) 1998-10-02 1998-10-02 Schaltbares Klemmgesperre
DE19845365 1998-10-02
PCT/EP1999/006793 WO2000020247A1 (fr) 1998-10-02 1999-09-14 Mecanisme de blocage manoeuvrable

Publications (1)

Publication Number Publication Date
EP1117558A1 true EP1117558A1 (fr) 2001-07-25

Family

ID=7883157

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99970063A Withdrawn EP1117558A1 (fr) 1998-10-02 1999-09-14 Mecanisme de blocage manoeuvrable

Country Status (7)

Country Link
US (1) US6491150B1 (fr)
EP (1) EP1117558A1 (fr)
JP (1) JP2002526222A (fr)
KR (1) KR20010075555A (fr)
BR (1) BR9914183A (fr)
DE (1) DE19845365A1 (fr)
WO (1) WO2000020247A1 (fr)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2826319B1 (fr) * 2001-06-21 2003-09-19 Faurecia Sieges Automobile Mecanisme de reglage irreversible et siege de vehicule comportant un tel mecanisme
DE10361955B4 (de) * 2003-12-23 2012-08-02 Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Coburg Beidseitig wirkender Antrieb
DE102005061791A1 (de) * 2005-12-23 2007-07-05 Schaeffler Kg Verriegelungseinheit, insbesondere für eine Überlagerungslenkung
DE202010007993U1 (de) * 2010-07-06 2011-10-25 Rollax Gmbh & Co. Kg Kupplungseinrichtung, insbesondere für Kraftfahrzeugsitzversteller
BR112013002161B1 (pt) * 2010-07-29 2020-12-15 Rollax Gmbh & Co. Kg Mecanismo de acoplamento por aperto, método para sua fabricação e mecanismo de ajuste para assentos de veículos
DE102011051837A1 (de) * 2011-07-14 2013-01-17 Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Coburg Antriebsvorrichtung zum Antreiben eines Drehbeschlags
DE202011106110U1 (de) 2011-09-27 2013-01-29 Brose Fahrzeugteile Gmbh & Co. Kg, Coburg Antriebsanordnung für ein Verstellelement eines Kraftfahrzeugs
DE102013215869A1 (de) 2013-08-12 2014-12-24 Schaeffler Technologies Gmbh & Co. Kg Schaltbares Klemmgesperre
CN104033511B (zh) * 2014-06-30 2016-11-23 无锡市崇安区科技创业服务中心 一种自行车飞轮机构
DE202015103313U1 (de) * 2015-06-24 2016-09-30 Jörg Schwarzbich Sitzversteller
DE102015009075B4 (de) 2015-07-16 2018-07-12 Sew-Eurodrive Gmbh & Co Kg Bremsanordnung mit einer Achse, einem Gehäuseteil, einer ersten Welle und einem Abtriebsteil
DE102017120990B3 (de) 2017-09-12 2018-12-27 Schaeffler Technologies AG & Co. KG Klemmgesperre
DE102021103550B3 (de) 2021-02-16 2022-03-24 Schaeffler Technologies AG & Co. KG Arretierungseinheit für Aktuator einer Fahrzeugbremse und einen Aktuator
DE102021112805B3 (de) 2021-05-18 2022-08-04 Schaeffler Technologies AG & Co. KG Überholkupplung mit Schlitteneinrichtung
KR102877305B1 (ko) 2021-10-28 2025-10-29 주식회사 다스 차량용 시트의 파워 스위블 장치
JP7591173B1 (ja) * 2024-01-12 2024-11-27 Ｎｓｋワーナー株式会社 動力伝達装置

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE356473A (fr) * 1927-04-11
US2633213A (en) * 1947-05-20 1953-03-31 Houplain Rene Benjamin Self-locking device
DE1735420U (de) * 1955-05-31 1956-12-06 Hofheinz & Co Richard Beim ausschalten des antriebes nach beiden drehrichtungen selbsthemmendes getriebe.
US2873832A (en) * 1956-11-09 1959-02-17 Homer E Helm Drive shaft lock system
DE1798512U (de) * 1958-01-03 1959-10-22 Getrag Getriebe Zahnrad Nach beiden drehrichtungen wirkende und auf freilauf schaltbare klemmrollen-kupplung.
US3369638A (en) * 1966-03-21 1968-02-20 Boeing Co Clutch mechanism for dual-input, single-output control system
DE3003204C2 (de) * 1980-01-30 1985-11-14 Keiper Automobiltechnik Gmbh & Co Kg, 5630 Remscheid Bremsfederkupplung für Stellgetriebe, insbesondere von Sitzstellvorrichtungen in Kraftfahrzeugen
DE3203151C2 (de) 1982-01-30 1986-07-17 Keiper Automobiltechnik Gmbh & Co Kg, 5630 Remscheid Antriebsvorrichtung für einen Verstellmechanismus eines Fahrzeugsitzes
US4533027A (en) * 1982-08-09 1985-08-06 Mazda Motor Corporation Friction brake assembly
FR2673519B1 (fr) 1991-03-05 1993-12-24 Faure Automobile Bertrand Mecanisme de reglage du dossier d'un siege.
DE4134353C2 (de) * 1991-10-17 2001-05-03 Schaeffler Waelzlager Ohg Als Rollenfreilauf ausgebildete Kupplung zur Übertragung eines in beiden Drehrichtungen wirksamen Drehmoments
DE9319848U1 (de) * 1993-12-23 1995-01-26 Schwarzbich, Jörg, 33615 Bielefeld Sitzverstellung
DE9408426U1 (de) * 1994-05-24 1995-06-29 Schwarzbich, Jörg, 33615 Bielefeld Freilaufbremse
DE4447480A1 (de) 1994-12-24 1996-06-27 Schaeffler Waelzlager Kg Vorzugsweise für eine Sitzverstellung vorgesehenes Klemmgesperre
DE19518424C2 (de) * 1995-05-19 1998-11-26 Joerg Schwarzbich Verstellmechanismus
FR2750186B1 (fr) 1996-06-21 1998-08-28 Faure Bertrand Equipements Sa Mecanisme de commande d'un organe rotatif au moyen d'une poignee pivotante, et siege equipe d'un tel mecanisme
FR2766773B1 (fr) * 1997-07-30 1999-10-15 Faure Bertrand Equipements Sa Dispositif de blocage notamment pour siege de vehicule automobile
FR2792264B1 (fr) * 1999-04-16 2001-06-15 Faure Bertrand Equipements Sa Mecanisme de reglage irreversible

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0020247A1 *

Also Published As

Publication number Publication date
DE19845365A1 (de) 2000-04-06
JP2002526222A (ja) 2002-08-20
BR9914183A (pt) 2001-06-19
KR20010075555A (ko) 2001-08-09
WO2000020247A1 (fr) 2000-04-13
US6491150B1 (en) 2002-12-10

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