WO2020164652A1 - Dispositif de course libre de rouleaux de serrage - Google Patents

Dispositif de course libre de rouleaux de serrage Download PDF

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Publication number
WO2020164652A1
WO2020164652A1 PCT/DE2019/101046 DE2019101046W WO2020164652A1 WO 2020164652 A1 WO2020164652 A1 WO 2020164652A1 DE 2019101046 W DE2019101046 W DE 2019101046W WO 2020164652 A1 WO2020164652 A1 WO 2020164652A1
Authority
WO
WIPO (PCT)
Prior art keywords
section
clamping roller
spring element
clamping
spring
Prior art date
Application number
PCT/DE2019/101046
Other languages
German (de)
English (en)
Inventor
Toshiaki Yagi
Original Assignee
Schaeffler Technologies AG & 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 & Co. KG filed Critical Schaeffler Technologies AG & Co. KG
Publication of WO2020164652A1 publication Critical patent/WO2020164652A1/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
    • F16D41/06—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
    • 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
    • F16D2041/0605—Spring details
    • 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
    • F16D2300/00—Special features for couplings or clutches
    • F16D2300/06—Lubrication details not provided for in group F16D13/74

Definitions

  • the invention relates to an overrunning clutch designed as a clamping roller freewheel according to the preamble of claim 1.
  • Such an overrunning clutch is known, for example, from DE 10 2009 018 965 A1.
  • the known overrunning clutch has clamping rollers arranged between an inner ring and an outer ring, one of the rings having clamping ramps that interact with the clamping rollers.
  • Each pinch roller is individually sprung against a clamping ramp by means of a leaf spring bent several times.
  • Non-locking overrunning clutches such as clamping roller freewheels are usually operated with lubricant, which counteracts the wear and tear of mechanically highly stressed components.
  • the invention is based on the object of specifying a clamping roller freewheel that has been further developed compared to the prior art mentioned, in particular with regard to lubrication-related aspects.
  • This clamping roller freewheel comprises a number of clamping rollers in a basic concept known per se, each of which is spring-loaded against a clamping ramp by means of a spring element, which is provided by a coupling element, in particular a ring, the spring element being expandable in the manner of a pull-type harness and a compressible leaf spring is formed, which is held on a cage by means of a holding section having a U-shaped cross section.
  • the spring element which describes a strip shape that has been bent several times, has a central section which is narrower than the two end sections, namely the U-shaped holding section and a contact section of the spring element provided for contacting a clamping roller.
  • the freewheeling roller can be designed as a freewheel that cancels centrifugal forces.
  • the ver younger middle section extends over more than two mutually inclined legs of the spring element.
  • the width of the middle section is preferably not more than half, but more than a quarter, in particular more than a third, of the width of each end section.
  • the width of the end section held on the cage is preferably the same as the width of the second end section, that is to say that end section which contacts the clamping roller sprung by the spring element.
  • the end section designed as a holding section, that is to say fixed on the cage, supports, according to a possible embodiment, over its entire width a clamping roller adjacent to the clamping roller sprung by the spring element in at least one radial direction. Preferably, a support is given in both radial directions.
  • the mounting of the spring element on the cage thus agrees with the Ausgestal device according to the aforementioned DE 10 2009 018 965 A1.
  • the coupling element by which the clamping ramps are formed, can either be designed as an outer ring or as an inner ring of the clamping roller freewheel. Instead of an inner ring, a solid shaft can also be provided. If the clamping ramps are located on the outer ring, the cage is preferably formed directly by the outer ring.
  • roller freewheel is suitable, inter alia, for use in an internal combustion engine, for example a motorcycle.
  • the free-running pinch roller can be used in a torque converter or elsewhere in the drive train of a motor vehicle, in particular in a transmission.
  • FIG. 2 shows a detail of the arrangement according to FIG. 1, 3 shows a spring element of the clamping roller freewheel in plan view,
  • a clamping roller freewheel designated overall by the reference numeral 1, has two rings, namely an inner ring (not shown) and an outer ring 2.
  • Pinch rollers 3 contact the inner ring on the one hand and pinch ramps 4, which are formed by the outer ring 2, on the other.
  • Each pinch roller 3 is assigned a Federele element 5 which is held on a cage 6.
  • each spring element 5 is fixed to a cage web 7, the cage webs 7 in themonysbei play directly through material that was bent out of the outer ring 2 de are formed.
  • the cage 6 is thus an integral part of the outer ring 2.
  • the freewheel device FR of the inner ring opposite the outer ring 2 is indicated in FIG. 1 by an arrow.
  • the outer ring 2 like the inner ring, represents a coupling element of the clamping roller freewheel 1.
  • Each spring element 5 is designed as a leaf spring bent several times. That portion of the spring element 5 which is fixed on the cage web 7 is referred to as Flalteab section 8 and has a U-shaped cross section.
  • the cross-sectional design of the U-shaped pleat section 8 is known in principle from DE 10 2009 018 965 A1.
  • the U-shaped fold section 8 is also referred to as the first end section of the spring element 5.
  • the second end section 9 opposite the pleat section 8 contacts the clamping roller 3, which is spring-loaded by the spring element 5.
  • two securing tongues 1 1, 12 project in a straight extension of the U-base, designated by 13, of the folded section 8 beyond the cage web 7.
  • the locking tongues 1 1, 12 he thus extend essentially in the circumferential direction of the clamping roller freewheel 1, wherein they support the pinch roller 3, which is adjacent to the cage web 7, radially outward.
  • the end tongue 14 represents a leg of the U-profile of the holding section 8 and rests on the cage web 7.
  • the end tongue 14 has an inner end section 15 which protrudes beyond the cage web 7 and which is bent in the direction of the pinch roller 3 and thus forms a radially inwardly effective support relative to the pinch roller 3.
  • a barb 16 protrudes from the inner end section 15 in the direction of the cage web 7, so that the U-shaped holding section 8 is fixed on the cage web 7 with a positive fit.
  • a contact leg 17 connects, wel cher is arranged approximately parallel to the end tongue 14 and also the cage web 7 con tacted.
  • the contact leg 17 extends radially inward up to a first kink 18 of the spring element 5.
  • Further kinks of the spring element 5 are denoted by 19, 20, 21, 22, 23.
  • the between the kinks 18 to 23 lying lowing sections of the spring element 5 are designated as legs 25, 26, 27, 28, 29 be.
  • the second end section 9, which is also referred to as a contact section, connects to the kink 23, which is furthest away from the holding section 8.
  • the second end section 9 describes a slightly bent shape that is adapted to the curvature of the pinch roller 3.
  • a wide V-shaped bend within the end section 9, which can be seen in FIG. 2, is denoted by 24.
  • the area of the spring element 5 lying between the end sections 8, 9 is referred to as the middle section 30. All legs 25 to 29 are assigned to the middle section 30.
  • the width of the Federelemen tes 5 to be measured in the axial direction of the clamping roller freewheel 1 is denoted by Bv.
  • the width Bv corresponds to the width of the two end sections 8, 9.
  • the width of the center section, designated BR is cut 30 to almost half. Due to the reduced width BR, additional space is provided within the space in which the spring element 5 is arranged, in which lubricant can be received and through which lubricant can be promoted.
  • the additional space that is to say free space, which exists laterally next to the central gate 30, also improves the mobility of the spring element 5 in comparison to conventional, multiple-bent leaf springs with a uniform width.
  • the structure of the clamping roller freewheel 1 which comprises the spring elements 5 described with a centrally reduced width BR, is not fundamentally changed. Due to the widened end portions 8, 9 compared to the central portion 30, a springing of the Klemmrol len 3 is given practically over its entire width. Likewise, the backup tongues 11, 12 support the pinch rollers 3 practically over their full length. In the case of the inner end portion 15, the clamping roller 3 is supported over more than half of its width to be measured in the axial direction.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

Dispositif de course libre de rouleaux de serrage (1) comprenant des rouleaux de serrage (3), lesquels sont respectivement liés de manière élastique au moyen d'un élément de ressort (5) à une rampe de serrage (4), laquelle est fournie par un élément d'accouplement (2), l'élément de ressort (5) étant réalisé sous la forme d'un ressort à lame courbé, lequel est maintenu dans une cage (6) au moyen d'une partie de fixation (8) à coupe transversale en forme de U. L'élément de ressort (5) présente une partie centrale (30) qui est plus étroite que les deux parties terminales (8, 9), c'est-à-dire la partie de fixation (8) en forme de U et une partie d'appui (9) prévue pour la mise en contact avec un rouleau de serrage (3), de l'élément de ressort (5).
PCT/DE2019/101046 2019-02-11 2019-12-05 Dispositif de course libre de rouleaux de serrage WO2020164652A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019103324.1A DE102019103324A1 (de) 2019-02-11 2019-02-11 Klemmrollenfreilauf
DE102019103324.1 2019-02-11

Publications (1)

Publication Number Publication Date
WO2020164652A1 true WO2020164652A1 (fr) 2020-08-20

Family

ID=69326315

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2019/101046 WO2020164652A1 (fr) 2019-02-11 2019-12-05 Dispositif de course libre de rouleaux de serrage

Country Status (2)

Country Link
DE (1) DE102019103324A1 (fr)
WO (1) WO2020164652A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021122104B3 (de) 2021-08-26 2022-09-29 Schaeffler Technologies AG & Co. KG Lageranordnung mit Freilauffunktion, Linearaktuator und Verfahren zum Betrieb eines Linearaktuators
WO2023186337A1 (fr) * 2021-09-07 2023-10-05 Aktiebolaget Skf Embrayage pto à roue libre pour transmission manuelle de tracteur

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3917036A (en) * 1973-12-26 1975-11-04 Gen Motors Corp Molded cage for an overrunning roller clutch
US4088211A (en) * 1977-03-31 1978-05-09 General Motors Corporation Overrunning roller clutch with improved cage and bearing block
US4850464A (en) * 1988-09-02 1989-07-25 General Motors Corporation Roller clutch energizing spring with protected pleats
DE19937437A1 (de) 1999-08-07 2001-02-08 Schaeffler Waelzlager Ohg Klemmrollenfreilauf
DE10057175A1 (de) 2000-11-17 2002-05-23 Ina Schaeffler Kg Kunststoffkäfig für einen Klemmrollenfreilauf
US20020195306A1 (en) * 2001-06-25 2002-12-26 Nsk-Warner K.K. Oneway clutch device
DE102005034039A1 (de) * 2005-07-21 2007-01-25 Schaeffler Kg Hülsen-/Rollenfreilauf mit einem Käfig für die Nadeln oder Rollen
US20100116611A1 (en) * 2008-11-13 2010-05-13 Nsk-Warner K.K. One-way clutch of roller type
DE102009018965A1 (de) 2009-04-25 2010-10-28 Schaeffler Technologies Gmbh & Co. Kg Freilaufkupplung
DE102011005245A1 (de) 2011-03-08 2012-09-13 Schaeffler Technologies Gmbh & Co. Kg Klemmrollenfreilauf
DE102013012804A1 (de) * 2013-08-01 2015-02-05 Borgwarner Inc. Freilauf und Freilaufanordnung mit einem solchen Freilauf

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3917036A (en) * 1973-12-26 1975-11-04 Gen Motors Corp Molded cage for an overrunning roller clutch
US4088211A (en) * 1977-03-31 1978-05-09 General Motors Corporation Overrunning roller clutch with improved cage and bearing block
US4850464A (en) * 1988-09-02 1989-07-25 General Motors Corporation Roller clutch energizing spring with protected pleats
DE19937437A1 (de) 1999-08-07 2001-02-08 Schaeffler Waelzlager Ohg Klemmrollenfreilauf
DE10057175A1 (de) 2000-11-17 2002-05-23 Ina Schaeffler Kg Kunststoffkäfig für einen Klemmrollenfreilauf
US20020195306A1 (en) * 2001-06-25 2002-12-26 Nsk-Warner K.K. Oneway clutch device
DE102005034039A1 (de) * 2005-07-21 2007-01-25 Schaeffler Kg Hülsen-/Rollenfreilauf mit einem Käfig für die Nadeln oder Rollen
US20100116611A1 (en) * 2008-11-13 2010-05-13 Nsk-Warner K.K. One-way clutch of roller type
DE102009018965A1 (de) 2009-04-25 2010-10-28 Schaeffler Technologies Gmbh & Co. Kg Freilaufkupplung
DE102011005245A1 (de) 2011-03-08 2012-09-13 Schaeffler Technologies Gmbh & Co. Kg Klemmrollenfreilauf
DE102013012804A1 (de) * 2013-08-01 2015-02-05 Borgwarner Inc. Freilauf und Freilaufanordnung mit einem solchen Freilauf

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021122104B3 (de) 2021-08-26 2022-09-29 Schaeffler Technologies AG & Co. KG Lageranordnung mit Freilauffunktion, Linearaktuator und Verfahren zum Betrieb eines Linearaktuators
WO2023025342A1 (fr) 2021-08-26 2023-03-02 Schaeffler Technologies AG & Co. KG Ensemble palier à fonction roue libre, actionneur linéaire et procédé de fonctionnement d'un actionneur linéaire
WO2023186337A1 (fr) * 2021-09-07 2023-10-05 Aktiebolaget Skf Embrayage pto à roue libre pour transmission manuelle de tracteur

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