WO2006117140A2 - Dispositif d'assemblage entre un galet de roulement et un dispositif de serrage - Google Patents

Dispositif d'assemblage entre un galet de roulement et un dispositif de serrage Download PDF

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Publication number
WO2006117140A2
WO2006117140A2 PCT/EP2006/003960 EP2006003960W WO2006117140A2 WO 2006117140 A2 WO2006117140 A2 WO 2006117140A2 EP 2006003960 W EP2006003960 W EP 2006003960W WO 2006117140 A2 WO2006117140 A2 WO 2006117140A2
Authority
WO
WIPO (PCT)
Prior art keywords
thread
bearing
nut
bearing pin
connecting arrangement
Prior art date
Application number
PCT/EP2006/003960
Other languages
German (de)
English (en)
Other versions
WO2006117140A3 (fr
Inventor
Johann Singer
Christian Krüger
Original Assignee
Schaeffler Kg
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Schaeffler Kg filed Critical Schaeffler Kg
Publication of WO2006117140A2 publication Critical patent/WO2006117140A2/fr
Publication of WO2006117140A3 publication Critical patent/WO2006117140A3/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
    • F16H—GEARING
    • F16H7/00—Gearings for conveying rotary motion by endless flexible members
    • F16H7/08—Means for varying tension of belts, ropes, or chains
    • F16H7/10—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley
    • F16H7/12—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of an idle pulley
    • F16H7/1254—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of an idle pulley without vibration damping means
    • F16H7/1281—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of an idle pulley without vibration damping means where the axis of the pulley moves along a substantially circular path
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C13/00—Rolls, drums, discs, or the like; Bearings or mountings therefor
    • F16C13/006—Guiding rollers, wheels or the like, formed by or on the outer element of a single bearing or bearing unit, e.g. two adjacent bearings, whose ratio of length to diameter is generally less than one
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
    • F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
    • F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
    • F16C35/063—Fixing them on the shaft
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
    • F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
    • F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
    • F16C35/07—Fixing them on the shaft or housing with interposition of an element
    • F16C35/073—Fixing them on the shaft or housing with interposition of an element between shaft and inner race ring
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
    • F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2361/00—Apparatus or articles in engineering in general
    • F16C2361/63—Gears with belts and pulleys
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H7/00—Gearings for conveying rotary motion by endless flexible members
    • F16H7/08—Means for varying tension of belts, ropes, or chains
    • F16H2007/0802—Actuators for final output members
    • F16H2007/081—Torsion springs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H7/00—Gearings for conveying rotary motion by endless flexible members
    • F16H7/08—Means for varying tension of belts, ropes, or chains
    • F16H2007/0863—Finally actuated members, e.g. constructional details thereof
    • F16H2007/0865—Pulleys

Definitions

  • the invention relates to a connection arrangement between a roller and a tensioning device for a belt, wherein the roller of at least one, an inner and an outer ring and rolling elements arranged therebetween bearing is supported.
  • a pivot bearing for a clamping device in which a fastening screw is provided as fastening means for fastening the roller on a integrally formed with a pivot arm bearing pin, which in turn is screwed within the axis of rotation of the roller. Due to the minimum support length and the position of the stress concentration of the screw thread technicallyschraubenlän- gene or minimum Schwenkarmdicken required, on the one hand lead to increased accumulation of material in the tapping area and on the other to an increased envelope geometry of the clamping device, whereby the arrangement in the area, for example a motor is restricted. Incidentally, a screw connection does not allow arbitrarily small pivot arms.
  • the invention has for its object to provide an improved connection arrangement of the generic type, which is feasible with the lowest possible number of components with the simplest measures and accordingly with low mechanical complexity and expenditure of time and a allows easy replacement of the roller or roller bearing, without the swing arm itself being affected.
  • the invention is based on the finding that conventional connection arrangements between a roller and a tensioning device are expensive to manufacture and thus cost-intensive.
  • the object is achieved according to the features of the main claim, starting from a connection arrangement between a roller and a tensioning device for a belt, in which the roller of at least one, an inner ring and an outer ring and arranged therebetween rolling elements Rolling is supported, achieved in that the inner ring of the at least one rolling bearing is supported radially at least indirectly on a cantilevered journal of a pivoting arm of the clamping device and axially by means of a screwed from the free end of the journal forth on a gland and frontally engaging thread-forming nut against a Radial web of the swivel arm is stretched.
  • Thread-forming nut allows easy mounting of the rolling bearing together with the roller on the pivot arm of the clamping device, since the external thread on the threaded portion of the journal does not need to be prepared in advance, but with the screwing the nut on the journal in a work step takes place. Likewise, a simple removal of the rolling bearing and roller from the journal is ensured by only the thread-rolling nut is released. Thread-forming nuts are in a particularly advantageous manner re-screwed several times, since the thread in the journal is pushed in, so to speak, and accordingly no chip formation is recorded. An additional retaining ring can be largely dispensed with, since a high vibration safety is provided solely by the thread friction of the thread-rolling nut.
  • the threaded bore of the thread-rolling nut in cross-section has the shape of a polygon with three or more inwardly rounded form webs, the thread with a largely cylindrical bearing pin is engageable.
  • the threaded bore of the self-tapping nut is cylindrical in cross-section and engageable with a bearing pin, the cross-section of which has the shape of a polygon with three or more outwardly rounded forming webs.
  • the threaded bore of the thread-rolling nut or said bearing journal preferably have a trilobular shape in cross-section, the thread of the nut being provided with a radius profiling. This results in a significant reduction of the torques or the torques. Low torques and high over torques (failure torques) lead advantageously to a high biasing force or high clamping forces.
  • the inner ring of the rolling bearing is supported radially on a support portion of the journal, which adjoins in the axial direction directly to the radial web of the pivot arm and is chosen to be larger in diameter than the screw portion of the journal.
  • the pivoting arm together with a bearing pin formed integrally therewith is preferably made of cast metal, with light-weight cast metal, such as die-cast aluminum, being particularly favored.
  • the thread-rolling nut is preferably made of tool steel, whereby the required material pairing of a hard and a soft partner for threading grooves is given.
  • the radial flange portion of the thread-rolling nut can be formed so enlarged radially that a front-side contamination protection of the rolling bearing is realized.
  • the invention also includes a self-tapping nut per se for positive and non-positive and releasable connection with a cylindrical bearing pin or journal whose threaded bore has in cross-section the shape of a polygon with three or more inwardly rounded molding webs.
  • a thread-forming screw is known in the art
  • a thread-rolling nut capable of engaging with any pin member as a result of a thread being threaded thereinto into a positive and non-positive and releasable connection has heretofore remained unknown.
  • the threaded bore of the thread-rolling nut preferably has a Tri lobular shape in cross-section, wherein the thread thereof is provided with a radius profiling.
  • FIG. 1 is a sectional view of a conventional connection arrangement between a roller and a tensioning device for bracing a belt according to the prior art
  • Fig. 2 shows a first embodiment of an inventively designed connection arrangement between a roller and a tensioning device
  • Fig. 3 shows a second embodiment of the connection arrangement.
  • FIG. 1 thus shows a conventional connection arrangement between a roller 1 and a tensioning device 2, for example for bracing a belt means of a drive arrangement of a motor vehicle not shown in greater detail.
  • the clamping device 2 has a rotationally symmetrical basic element 3, which is connected by means of a screw, not shown, to a rotationally symmetrical receiving element 4 for a swivel arm 5 and attached to a load-bearing component of the motor vehicle body or to the housing of an internal combustion engine or a transmission. bar is.
  • the pivot arm 5 is in turn rotatably mounted on a slide bearing 6 on the outer contour of the receiving element 4.
  • pivot arm 5 is acted upon by a torsion spring 7, which is supported at one end on the base element 3 and the other end on the pivot arm 5, with a torque such that the roller 1 is pressed against the belt, not shown, and this clamped as intended.
  • the roller 1 is rotatably mounted on an associated roller bearing 8 on an integrally formed with the pivot arm 5 cantilevered bearing pin 9 and by means of an axially not shown here by the inner ring of the rolling bearing 8 and in a threaded bore 10 of the Bearing 9 engaging fastening screw 11, with, for example, a Torx receptacle for a suitable tool, fixed to the pivot arm 5.
  • pivot arm 5 and bearing pin 9 are integrally made of a cast material. Axially outward, a cover cap 12 is fastened to the roller 1 to protect the roller bearing 8 against soiling and damage.
  • the inventively designed connection arrangement of FIG. 2 differs essentially to the prior art described above in that the rolling bearing 8, consisting of inner and outer ring 8 a, 8 b and disposed therebetween rolling elements 8 c, over the Inner ring 8 a radially on the cantilevered bearing pin 9 of the pivot arm 5 of the clamping device 2 is supported and axially by means of a forth from the free end of the bearing pin 9 forth on a screw 13 of the same screwed and frontally engaging thread-forming nut 14 against a radial web 15 of the swing arm 5 is stretched ,
  • the threaded bore of the thread-forming nut 14 while maintaining the action mechanisms of thread-forming screws in cross-section in the shape of a polygon with three or more inwardly rounded form webs whose thread with a widest going cylindrically shaped bearing pin 9 can be brought into engagement (not shown in detail).
  • the screw shaft of conventional thread-forming screws is provided with a cross-section, which has the shape of a polygon with three outwardly rounded mold lands, so in cross-section a so-called trilobular shape.
  • the threaded bore of the self-tapping nut 14 also has a trilobular shape in cross-section, however, as already mentioned, with inwardly rounded forming webs, wherein a radius profiling of the thread is provided.
  • FIG. 2 furthermore shows that the inner ring 8a of the rolling bearing 8 is supported radially on a support section 16 of the bearing journal 9.
  • This support section 16 adjoins the radial web 15 of the swivel arm 5 in the axial direction and is chosen to be larger in diameter than the screw connection section 13 of the journal 9.
  • the embodiment according to FIG. 3 differs from the previously described variant in that the thread-rolling nut 14 has, in addition to the radial flange section 17 which is conventional per se, an axially oriented support section 18 which extends into the bore of the inner ring 8a and over which the inner ring 8a of the Rolling 8 directly supported on the bearing pin 9.
  • the thread-rolling nut 14 has, in addition to the radial flange section 17 which is conventional per se, an axially oriented support section 18 which extends into the bore of the inner ring 8a and over which the inner ring 8a of the Rolling 8 directly supported on the bearing pin 9.
  • one or both support portions 16, 18 conically tapered form For improved assembly of the rolling bearing 8, it may also be indicated, one or both support portions 16, 18 conically tapered form.
  • the pivoting arm 5, together with the bearing pin 9 formed integrally therewith is preferably made of cast metal, light metal casting, such as, for example, die-cast aluminum, being favored.
  • any other conceivable and suitable material pairings are also covered by the invention, such as a metal-plastic material pairing or others.
  • a radially enlarged flange portion 17 of the thread-rolling nut 14 is further shown, whereby a frontal pollution protection of the rolling bearing 8 is realized.
  • a conventionally used cap 12 (FIG. 1) is dispensable.
  • the thread-forming nut 14 screwed onto the bearing pin 9 during assembly of the roller 1 together with the rolling bearing 8 preferably scores a metric screw thread, so that, for example, in an emergency, such as in a loss of the thread-rolling nut 14 to be avoided per se, also conventional nuts Metric thread for attachment are used.
  • connection assembly According to a further, not shown embodiment of the connection assembly according to the invention, it is provided that the threaded bore of the thread-forming nut 14 is cylindrical in cross-section and accordingly a conventional fastening nut with, for example metric thread and radius profiling may correspond, but now the bearing pin 9 in Cross section has the shape of a polygon with three or more outwardly rounded form webs, whereby the conditions are given that said mother can act as a thread-forming nut 14.
  • the thread-rolling nut 14 is not only suitable exclusively for the above application, but also manifold applications recorded, which in turn allow a positive and non-positive and releasable connection between the thread-forming nut 14 and a cylindrical bearing pin 9 or any other suitable pin by cutting grooves without a thread in the bearing pin 9 or pin by means of said nut 14.

Abstract

L'invention concerne un dispositif d'assemblage entre un galet de roulement (1) et un dispositif de serrage (2) pour un élément d'enroulement. Selon l'invention, le galet de roulement (1) est supporté par au moins un palier à roulement (8) qui comporte une bague intérieure et une bague extérieure (8a, 8b), ainsi qu'un corps de roulement (8c) qui est disposé entre ces bagues. La bague intérieure (8a) du/des palier(s) à roulement (8) s'appuie au moins indirectement sur un tourillon (9) faisant librement saillie d'un bras oscillant (5) du dispositif de serrage (2), et est serrée axialement contre un élément de liaison radial (15) du bras oscillant (5), au moyen d'un écrou (14) à action frontale qui peut être vissé à partir de l'extrémité libre du tourillon (9), sur une section de vissage (13) de celui-ci, et qui crée un filet sur le tourillon lors du processus vissage, ce qui permet un montage et un démontage simples et peu onéreux du palier à roulement (8), y compris du galet de roulement (1), sur le tourillon (9).
PCT/EP2006/003960 2005-05-03 2006-04-28 Dispositif d'assemblage entre un galet de roulement et un dispositif de serrage WO2006117140A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005020530.5 2005-05-03
DE102005020530A DE102005020530A1 (de) 2005-05-03 2005-05-03 Verbindungsanordnung zwischen einer Laufrolle und einer Spannvorrichtung

Publications (2)

Publication Number Publication Date
WO2006117140A2 true WO2006117140A2 (fr) 2006-11-09
WO2006117140A3 WO2006117140A3 (fr) 2007-03-22

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PCT/EP2006/003960 WO2006117140A2 (fr) 2005-05-03 2006-04-28 Dispositif d'assemblage entre un galet de roulement et un dispositif de serrage

Country Status (2)

Country Link
DE (1) DE102005020530A1 (fr)
WO (1) WO2006117140A2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008107249A1 (fr) * 2007-03-06 2008-09-12 Schaeffler Kg Dispositif de serrage pour commande à éléments de traction
DE102010043589A1 (de) * 2010-11-08 2012-05-10 Baier & Michels Gmbh & Co. Kg Gewindeerzeugende Mutter, Rohteil zur Herstellung der Mutter und Schraubverbindung aus Mutter und Bolzen
RU2647394C1 (ru) * 2016-12-13 2018-03-15 федеральное государственное бюджетное образовательное учреждение высшего образования "Уфимский государственный авиационный технический университет" Передача винт-гайка

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009004862A1 (de) 2009-01-16 2010-07-22 Schaeffler Technologies Gmbh & Co. Kg Spannvorrichtung für einen Zugmitteltrieb
DE102009005109A1 (de) 2009-01-19 2010-07-22 Schaeffler Technologies Gmbh & Co. Kg Spannvorrichtung für einen Zugmitteltrieb

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2343748A1 (de) 1973-08-30 1975-03-06 Schaeffler Ohg Industriewerk Lagerplatte zur schwenkbaren lagerung einer auf ihr befestigten spannrolle
DE3836933A1 (de) 1988-05-21 1990-05-10 Schaeffler Waelzlager Kg Spannvorrichtung fuer riemen
DE10127521A1 (de) 2001-06-06 2002-12-12 Ina Schaeffler Kg Schwenklager für eine Spannvorrichtung

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE832365C (de) * 1950-02-17 1952-02-25 Georgii Elektro Motoren Appbau Antrieb fuer Arbeitsmaschinen, z.B. eine Naehmaschine
EP0072134A1 (fr) * 1981-08-03 1983-02-16 Eaton Corporation Dispositif de tension pour un entraînement
DE29614832U1 (de) * 1996-08-26 1997-01-02 Trw Repa Gmbh Befestigungsmittel bei einem Fahrzeuginsassen-Rückhaltesystem
US6857979B2 (en) * 2001-10-26 2005-02-22 Litens Automotive Partnership Combination belt tensioner and idler
DE102004025738A1 (de) * 2004-05-26 2006-01-05 Ina-Schaeffler Kg Verbindungsanordnung zwischen einer Laufrolle und einer Spannvorrichtung sowie Verfahren zur Herstellung einer derartigen Verbindungsanordnung

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2343748A1 (de) 1973-08-30 1975-03-06 Schaeffler Ohg Industriewerk Lagerplatte zur schwenkbaren lagerung einer auf ihr befestigten spannrolle
DE3836933A1 (de) 1988-05-21 1990-05-10 Schaeffler Waelzlager Kg Spannvorrichtung fuer riemen
DE10127521A1 (de) 2001-06-06 2002-12-12 Ina Schaeffler Kg Schwenklager für eine Spannvorrichtung

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008107249A1 (fr) * 2007-03-06 2008-09-12 Schaeffler Kg Dispositif de serrage pour commande à éléments de traction
DE102010043589A1 (de) * 2010-11-08 2012-05-10 Baier & Michels Gmbh & Co. Kg Gewindeerzeugende Mutter, Rohteil zur Herstellung der Mutter und Schraubverbindung aus Mutter und Bolzen
WO2012062728A1 (fr) 2010-11-08 2012-05-18 Baier & Michels Gmbh & Co. Kg Écrou auto-fileteur, élément tubulaire pour la fabrication de l'écrou et assemblage vissé composé d'un écrou et d'un boulon
US8770903B2 (en) 2010-11-08 2014-07-08 Baier & Michels Gmbh & Co. Kg Thread-producing nut, blank for the fabrication of said nut, and bolted joint composed of said nut and a bolt
AU2011328261B2 (en) * 2010-11-08 2016-02-11 Baier & Michels Gmbh & Co. Kg Thread-producing nut, blank for manufacturing the nut and screwed connection composed of nut and bolt
RU2647394C1 (ru) * 2016-12-13 2018-03-15 федеральное государственное бюджетное образовательное учреждение высшего образования "Уфимский государственный авиационный технический университет" Передача винт-гайка

Also Published As

Publication number Publication date
DE102005020530A1 (de) 2006-11-16
WO2006117140A3 (fr) 2007-03-22

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