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WO2017080550A1 - Roue libre à rouleaux - Google Patents

Roue libre à rouleaux Download PDF

Info

Publication number
WO2017080550A1
WO2017080550A1 PCT/DE2016/200486 DE2016200486W WO2017080550A1 WO 2017080550 A1 WO2017080550 A1 WO 2017080550A1 DE 2016200486 W DE2016200486 W DE 2016200486W WO 2017080550 A1 WO2017080550 A1 WO 2017080550A1
Authority
WO
WIPO (PCT)
Prior art keywords
cage
sleeve
outer ring
shaped outer
roller freewheel
Prior art date
Application number
PCT/DE2016/200486
Other languages
German (de)
English (en)
Inventor
Swen DÖRRIE
Frieder Altmann
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 WO2017080550A1 publication Critical patent/WO2017080550A1/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
    • F16D41/067—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 and the members being distributed by a separate cage encircling the axis of rotation

Definitions

  • the invention relates to a roller freewheel, comprising a sleeve-shaped outer ring formed on an inner peripheral surface clamping ramps, a plurality of clamping rollers which are each spring-biased against the respective clamping ramp, and at least one rotatably arranged in the sleeve-shaped outer ring cage on which the pinch rollers and the springs arranged are.
  • Such a roller freewheel also called sleeve or clamping roller freewheel, allows rotation in a defined direction of rotation, while the rotation in the other direction can be locked by the clamping rollers jamming on the clamping ramps.
  • Freewheels of this kind are used, for example, in torque converter or automatic transmissions in the motor vehicle sector or in corresponding industrial machines. The application of such a freewheel in the starter drive of a motorcycle or in a transmission of an e-bike is also conceivable.
  • roller freewheel with a cylindrical outer surface and an inner surface provided with clamping ramps having, formed as a non-cutting formed sheet metal part outer ring protrudes.
  • the roller freewheel comprises a plurality of pinch rollers, which are spring-loaded against the clamping ramps, and a rotatably arranged in the outer ring, formed as a non-cutting formed sheet metal part cage, are mounted on which provided for springing the pinch rollers springs.
  • the object of the present invention is to develop a roller freewheel, and in particular to simplify the manufacture and assembly of the cage in the sleeve-shaped outer ring.
  • the cage is made of a polymer material.
  • the cage is preferably injection-molded from a polyamide material.
  • Other suitable polymer materials and manufacturing processes for the production of the cage are also conceivable.
  • the cage is fiber-reinforced.
  • the cage made of a polymer material is particularly favorable, fast and easy manufacture. This results in particular cost and production advantages over a metallic cage.
  • the sleeve-shaped outer ring is formed of a metallic material. In this case, at least the clamping ramps on the sleeve-shaped outer ring are produced by forming technology.
  • the cage has on a first end face on at least one radial expression for the axial positioning of the cage in the sleeve-shaped outer ring.
  • the cage is placed during assembly with the sleeve-shaped outer ring in the sleeve-shaped outer ring.
  • the at least one radial expression is provided on the cage.
  • the at least one radial expression is formed circumferentially.
  • the cage has a one-piece radial shape which extends along the entire outer circumference.
  • the cage has on a first end side at least three radial characteristics for the axial positioning of the cage in the sleeve-shaped outer ring.
  • a plurality of radial shapes are formed on the first end face of the cage.
  • the sleeve-shaped outer ring on a first end face on a radially formed annular shoulder on which the at least one radial Ausgar- tion for axial positioning of the cage in the sleeve-shaped outer ring comes axially to the plant.
  • the at least one radial expression is supported axially on the radially formed annular shoulder and thereby prevents axial slipping of the cage in the sleeve-shaped outer ring.
  • the substantially radially formed annular shoulder and the inner peripheral surface of the sleeve-shaped outer ring form an acute angle.
  • the substantially radially formed annular shoulder is not perpendicular to the inner peripheral surface of the sleeve-shaped outer ring but slightly axially inwardly in the direction of the cage.
  • the cage preferably has, on a second end face, at least one radial lug for the rotationally fixed fixing of the cage in the sleeve-shaped outer ring.
  • the radial nose preferably extends in the circumferential direction further than in the axial direction, whereby the strength of the nose in the circumferential direction is higher than the rigidity of the nose in the axial direction. In particular, the nose is loaded only in the circumferential direction of the sleeve-shaped outer ring.
  • the sleeve-shaped outer ring on a second end face on a radially formed annular shoulder with a plurality of recesses, wherein the at least one radial nose for rotationally fixed fixing of the cage in the sleeve-shaped outer ring at least tangentially in the respective recess comes to rest. Consequently, the respective radial nose is arranged in the assembled state of the cage in the respective recess provided on the sleeve-shaped outer ring.
  • the two annular shoulders are made in particular by means of crimping.
  • the respective recess is preferably made by punching.
  • the invention includes the technical teaching that the respective recess is designed to be complementary to the respective radial nose, in order to connect the cage in a form-fitting manner with the sleeve-shaped outer ring in the circumferential direction.
  • the respective recess and thus also the respective radial nose is rectangular.
  • the respective recess is preferably provided for the axial passage of the respective radial shape through the respective recess.
  • the respective radial expression on the first end side is arranged on a respective axial axis with the respective radial nose on the second end side. Consequently, during the assembly of the cage in the sleeve-shaped outer ring, the cage is positioned in such a way relative to the sleeve-shaped outer ring that a passage of the radial extent through the recess is made possible.
  • the respective radial extent is smaller than the respective radial nose, at least in the circumferential direction and in the radial direction.
  • FIG. 4 shows an illustration of the construction of the roller freewheel according to the invention, and a schematic perspective view for illustrating the cage according to the invention according to FIG. 4, FIG.
  • an inventive roller freewheel comprises a sleeve-shaped outer ring 1, a cage 5, a plurality of pinch rollers 3 and one of the number
  • the roller freewheel is particularly suitable for installation in a torque converter or in an automatic transmission, its use is not limited to these devices. Rather, the roller freewheel is also universally applicable, for example, in the industrial sector.
  • the springs 4 are formed as leaf springs and keep the pinch rollers 3 in constant readiness for clamping on the clamping ramps 2 shown in Figure 2 on the sleeve-shaped outer ring. 1 A rotation of the pinch rollers 3 contacting - not shown here - inner ring in the clockwise direction blocks the roller freewheel, since in this case the pinch rollers 3 run onto the clamping ramps 2 and jam.
  • the sleeve-shaped outer ring 1 has a radially formed annular shoulder 9a on a first end face 8a. Furthermore, the sleeve-shaped outer ring 1 at a second end face 8b has a radially formed annular shoulder 9b with eleven recesses 11.
  • the cage 5 likewise has a first and a second end face 6a, 6b, wherein three radial tabs 10 are formed on the second end face 6b.
  • the respective lug 10 is arranged in the respective recess 1 1 on the sleeve-shaped outer ring 1 and comes at least tangentially in the respective recess 1 1 to the system to form-fit the cage 5 in the circumferential direction with the sleeve-shaped outer ring 1 to connect.
  • the respective recess 1 1 is formed substantially complementary to the respective radial nose 10.
  • FIG. 2 shows the sleeve-shaped outer ring 1 of the roller freewheel according to the invention.
  • the sleeve-shaped outer ring 1 is manufactured as a sheet-metal forming part, wherein on an inner circumferential surface of the sleeve-shaped outer ring 1 with the - not shown here - clamping rollers cooperating clamping ramps 2 are formed.
  • the clamping ramps 2 are produced by forming technology on the sleeve-shaped outer ring 1.
  • the radially formed annular shoulder 9a is arranged, which is intended to position the cage 5 - not shown here - axially in the sleeve-shaped outer ring 1.
  • annular shoulder 9b formed on the second end face 8b of the sleeve-shaped outer ring 1 is intended to fix the cage 5 in a rotationally fixed manner in the sleeve-shaped outer ring 1.
  • the two radially formed annular shoulders 9a, 9b are formed parallel to each other and extend radially inwardly.
  • FIG. 3 shows the cage 5 of the roller freewheel according to the invention.
  • the cage 5 is made of a polymer material.
  • the cage 5 is produced by injection molding.
  • the cage 5 at the first end face 6a eleven radial forms 7 for the axial positioning of the cage 5 in the - not shown here - sleeve-shaped outer ring 1 on.
  • the respective radial lugs 10 on the second end face 6b of the cage 5 is formed on a respective common axial axis with the respective expression 7 on the second end face 6b of the cage 5.
  • the webs 14 are integrally connected to the two rings 13a, 13b and form the cage 5.
  • the uniformly distributed over the circumference, axially formed webs 14 are provided inter alia for receiving a respective - not shown here -Feder.
  • the respective spring is placed radially on the respective web 14.
  • a - not shown here - pinch roller is arranged in the respective free space 15 of the cage 5 and biased by the spring against a respective web 14.
  • the sleeve-shaped outer ring 1 with the first end face 8a is placed on a mounting table (not shown here).
  • the cage 5 is pushed together with the springs 4 and pinch rollers 3 mounted therein axially in the sleeve-shaped outer ring 1, or placed in the sleeve-shaped outer ring 1.
  • the cage 5 does not slip due to the radial shape formed thereon 7, but comes to the annular shoulder 9a axially to the plant.
  • a special tool for the axial positioning of the cage 5 relative to the sleeve-shaped outer ring 1 is thus not required.
  • the cage 5 of the roller freewheel according to the invention according to a second embodiment on the first end face 6a a circumferentially formed radial shape 7.
  • the sleeve-shaped outer ring 1 has, on a first end face 8a, a substantially radially formed annular shoulder 9a, on which the radial projection 7 for axial positioning of the cage 5 in the sleeve-shaped outer ring 1 comes into axial contact.
  • the substantially radially formed annular shoulder 9a is formed such that an acute angle between the substantially radially formed annular shoulder 9a and the inner peripheral surface of the sleeve-shaped outer ring 1 is formed.
  • FIG. 5 shows a schematic perspective view illustrating the structure of the roller freewheel according to the invention according to Figure 4, comprising the sleeve-shaped outer ring 1 by the cage 5 is arranged.
  • FIG. 6 shows only the cage 5 according to FIG. 4.
  • the cage 5 according to FIG. 6 is constructed essentially identical to the cage 5 according to FIG. Reference numeral sleeve-shaped outer ring

Landscapes

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

Abstract

L'invention concerne une roue libre à rouleaux, comprenant une bague extérieure (1) en forme de douille munie de rampes de serrage (2) réalisées sur une surface périphérique intérieure, plusieurs rouleaux de serrage (3) qui sont chacun en appui de manière élastique contre la rampe de serrage (2) concernée au moyen d'un ressort (4), ainsi qu'une cage (5) agencée au moins de manière solidaire en rotation dans la bague extérieure (1) en forme de douille, et laquelle cage sont agencés les rouleaux de serrage (3) et les ressorts (4). Selon l'invention, la cage (5) est fabriquée à partir d'un matériau polymère.
PCT/DE2016/200486 2015-11-12 2016-10-24 Roue libre à rouleaux WO2017080550A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015222301.9A DE102015222301B4 (de) 2015-11-12 2015-11-12 Rollenfreilauf
DE102015222301.9 2015-11-12

Publications (1)

Publication Number Publication Date
WO2017080550A1 true WO2017080550A1 (fr) 2017-05-18

Family

ID=57345630

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2016/200486 WO2017080550A1 (fr) 2015-11-12 2016-10-24 Roue libre à rouleaux

Country Status (2)

Country Link
DE (1) DE102015222301B4 (fr)
WO (1) WO2017080550A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019133200B3 (de) * 2019-12-05 2021-03-11 Schaeffler Technologies AG & Co. KG Rollenfreilaufeinheit für ein Fahrzeug, Fahrzeug mit einer Rollenfreilaufeinheit sowie Verwendung und Verfahren zur Montage der Rollenfreilaufeinheit

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4679676A (en) * 1986-06-11 1987-07-14 General Motors Corporation Overrunning clutch cage with simplified manufacture
US4712661A (en) * 1986-05-16 1987-12-15 General Motors Corporation Overrunning clutch cage
EP0370119A1 (fr) * 1988-11-19 1990-05-30 Borg-Warner Automotive GmbH Roue libre à cage double avec verrouillage axial par protubérances axiales sur une cage extérieure en plastique
EP0611898A1 (fr) * 1993-02-18 1994-08-24 Ford-Werke Aktiengesellschaft Roue libre à rouleau ou béquille de coincement avec une cage en plastique
WO1995016146A1 (fr) * 1993-12-06 1995-06-15 Ina Wälzlager Schaeffler Kg Cage de roue libre a anneau de renforcement
DE20117459U1 (de) * 2001-10-29 2002-01-10 Aktiebolaget SKF, Göteborg Freilaufvorrichtung
DE102007006517A1 (de) 2006-02-18 2007-08-23 Schaeffler Kg Rollenfreilauf
DE102008030229A1 (de) * 2008-06-25 2009-12-31 Schaeffler Kg Klemmrollen-Freilauf

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3023687A1 (de) * 1980-06-25 1982-01-14 Industriewerk Schaeffler Ohg, 8522 Herzogenaurach Einstueckiger blechkaefig fuer einen klemmrollenfreilauf
DE3620804A1 (de) * 1986-06-20 1987-12-23 Schaeffler Waelzlager Kg Kaefig fuer einen freilauf
DE19937437A1 (de) * 1999-08-07 2001-02-08 Schaeffler Waelzlager Ohg Klemmrollenfreilauf
DE102009037255A1 (de) * 2009-08-12 2011-02-17 Schaeffler Technologies Gmbh & Co. Kg Rollenfreilauf

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4712661A (en) * 1986-05-16 1987-12-15 General Motors Corporation Overrunning clutch cage
US4679676A (en) * 1986-06-11 1987-07-14 General Motors Corporation Overrunning clutch cage with simplified manufacture
EP0370119A1 (fr) * 1988-11-19 1990-05-30 Borg-Warner Automotive GmbH Roue libre à cage double avec verrouillage axial par protubérances axiales sur une cage extérieure en plastique
EP0611898A1 (fr) * 1993-02-18 1994-08-24 Ford-Werke Aktiengesellschaft Roue libre à rouleau ou béquille de coincement avec une cage en plastique
WO1995016146A1 (fr) * 1993-12-06 1995-06-15 Ina Wälzlager Schaeffler Kg Cage de roue libre a anneau de renforcement
DE20117459U1 (de) * 2001-10-29 2002-01-10 Aktiebolaget SKF, Göteborg Freilaufvorrichtung
DE102007006517A1 (de) 2006-02-18 2007-08-23 Schaeffler Kg Rollenfreilauf
DE102008030229A1 (de) * 2008-06-25 2009-12-31 Schaeffler Kg Klemmrollen-Freilauf

Also Published As

Publication number Publication date
DE102015222301B4 (de) 2017-09-14
DE102015222301A1 (de) 2017-05-18

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