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DE29612471U1 - Idler pulley - Google Patents

Idler pulley

Info

Publication number
DE29612471U1
DE29612471U1 DE29612471U DE29612471U DE29612471U1 DE 29612471 U1 DE29612471 U1 DE 29612471U1 DE 29612471 U DE29612471 U DE 29612471U DE 29612471 U DE29612471 U DE 29612471U DE 29612471 U1 DE29612471 U1 DE 29612471U1
Authority
DE
Germany
Prior art keywords
fastening screw
cover cap
screw
bore
tension pulley
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.)
Expired - Lifetime
Application number
DE29612471U
Other languages
German (de)
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.)
SKF GmbH
Original Assignee
SKF GmbH
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 SKF GmbH filed Critical SKF GmbH
Priority to DE29612471U priority Critical patent/DE29612471U1/en
Publication of DE29612471U1 publication Critical patent/DE29612471U1/en
Priority to FR9707220A priority patent/FR2751392B1/en
Priority to IT97TO000522A priority patent/IT1292775B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/723—Shaft end sealing means, e.g. cup-shaped caps or covers
    • 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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/80—Labyrinth sealings
    • F16C33/805—Labyrinth sealings in addition to other sealings, e.g. dirt guards to protect sealings with sealing lips
    • 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
    • F16H7/18—Means for guiding or supporting belts, ropes, or chains
    • F16H7/20—Mountings for rollers or 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
    • 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
    • F16C19/08—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 two or more rows of 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
    • F16C2226/00—Joining parts; Fastening; Assembling or mounting parts
    • F16C2226/50—Positive connections
    • F16C2226/70—Positive connections with complementary interlocking parts
    • F16C2226/74—Positive connections with complementary interlocking parts with snap-fit, e.g. by clips
    • 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
    • F16H2007/0863—Finally actuated members, e.g. constructional details thereof
    • F16H2007/0865—Pulleys

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Transmissions By Endless Flexible Members (AREA)

Description

SKF GmbH \: ·**SKF GmbH \ : ·**

BeschreibungDescription

SpannrolleTension pulley

Die Erfindung betrifft eine Spannrolle nach dem Oberbegriff des Hauptanspruches.The invention relates to a tension pulley according to the preamble of the main claim.

In der DE 43 43 429 ist eine Spannrolle dargestellt, die mit einer Sechskantschraube am Schwenkarm einer Spannvorrichtung befestigt ist. Der Kopf der Sechskantschraube ist dabei im topfförmigen Innenring des Wälzlagers für die Spannrolle versenkt. Eine geschlossene Abdeckkappe dichtet den gesamten Lagerraum ab und verhindert gegebenenfalls ein Herausfallen der Befestigungsschraube. Die Abdeckkappe wird durch Schnappelemente gehalten.DE 43 43 429 shows a tension pulley that is attached to the swivel arm of a tensioning device with a hexagon screw. The head of the hexagon screw is countersunk in the cup-shaped inner ring of the roller bearing for the tension pulley. A closed cover cap seals the entire bearing space and prevents the fastening screw from falling out. The cover cap is held in place by snap elements.

Wenn bei dieser Ausführung die Befestigungsschraube bedient werden muß, etwa bei Wechsel der Spannrolle, muß stets die Abdeckkappe abgenommen und beiseite gelegt werden. Um dies zu ermöglichen, muß die Schnappverbindung zwischen Abdecldcappe und Lager lösbar sein. Dies hat jedoch zur Folge, daß sich die Schnappverbindung auch unbeabsichtigt im Betrieb lösen kann. Werden demgegenüber nicht wieder lösbare Verbindungselemente vorgesehen, muß stets die Kappe erneuert werden.If the fastening screw has to be operated in this design, for example when changing the tension pulley, the cover cap must always be removed and put to one side. To make this possible, the snap connection between the cover cap and the bearing must be detachable. However, this means that the snap connection can also come loose unintentionally during operation. If, on the other hand, non-detachable connecting elements are provided, the cap must always be replaced.

Aufgabe der Erfindung ist es, eine Spannrolle der eingangs genannten Art zu schaffen, deren Abdeckkappe nicht gelöst werden muß, um die Befestigungsschraube zu bedienen, und diese weiterhin unverlierbar bleibt im Sinne einer Transportsicherung.The object of the invention is to create a tension pulley of the type mentioned at the beginning, the cover cap of which does not have to be removed in order to operate the fastening screw, and which remains captive in the sense of a transport lock.

Die Aufgabe wird dadurch gelöst, daß die Abdeckkappe mit einer zentralen Bohrung für die Verbindung zwischen Werkzeug und Befestigungsschraube versehen und diese über axial wirkende Formschlußelemente gegen Herausfallen gesichert ist.The task is solved by providing the cover cap with a central hole for the connection between the tool and the fastening screw and securing this against falling out by means of axially acting form-locking elements.

Dadurch kann die Abdeckkappe stets am Lager befestigt bleiben. Mindestens die Angriffsflächen für ein Befestigungswerkzeug sind frei zugänglich, wobei z. B. ein Außensechskant durch die zentrale Bohrung nach außen durchgeführt ist oder bei einer Inbusschraube der Schlüssel durch eine entsprechende Bohrung hindurchgefühlt werden kann. In allen Fällen verhindert der innenliegende Rand der Bohrung der Abdeckkappe ein Herausfallen der Befestigungsschraube.This means that the cover cap can always remain attached to the bearing. At least the attack surfaces for a fastening tool are freely accessible, whereby, for example, an external hexagon is led out through the central hole or, in the case of an Allen screw, the key can be felt through a corresponding hole. In all cases, the inner edge of the hole in the cover cap prevents the fastening screw from falling out.

Diese Merkmale werden nachfolgend an den in der Zeichnung dargestellten Beispielen beschrieben.These features are described below using the examples shown in the drawing.

Es zeigen:Show it:

Figur 1 den Längsschnitt einer Spannrolle mit Sechskantschraube und AbdeckkappeFigure 1 shows the longitudinal section of a tension pulley with hexagon screw and cover cap

undand

Figur 2 den teilweisen Längsschnitt im Bereich des Schraubenkopfes in Figur 1 mitFigure 2 shows the partial longitudinal section in the area of the screw head in Figure 1 with

einer Inbusschraube.an Allen screw.

Die in Figur 1 dargestellte Spannrolle dient zum Spannen eines nicht dargestellten Treibriemens an einem Verbrennungsmotor. Sie besteht aus einem Wälzlager mit Innen- 1 und Außenring 2. Auf dem Außenring 2 ist ein Laufrollenmantel 3 aus Kunststoff befestigt. Durch den Innenring 1 ist eine Befestigungsschraube 4 mit Außensechskant 5 geführt. Eine Abdeckkappe 6 ist durch Schnappelemente 7 in einer Nut 8 des Außenringes 2 befestigt und ist mit einer zentralen Bohrung 9 versehen. Durch diese reicht der Außensechskant 5 hindurch, an den sich ein zylindrischer Mantel 10 und ein Flanschabschnitt 11 anschließen. Der zylindrische Mantel 10 bildet mit der Bohrung 9 einen Ringspalt 12. Der hinter den inneren Bohrungsrand greifende Flanschabschnitt 11 bildet einen axialen Formschluß mit der Abdeckkappe 6 und einen weiteren hier radialen Ringspalt 12. Dadurch ergibt sich eine Labyrinthdichtung. Die dargestellte Ausführung ist damit eine kompakte, transportgesicherte Einheit.The tension pulley shown in Figure 1 is used to tension a drive belt (not shown) on an internal combustion engine. It consists of a roller bearing with an inner ring 1 and an outer ring 2. A roller casing 3 made of plastic is attached to the outer ring 2. A fastening screw 4 with an external hexagon 5 is guided through the inner ring 1. A cover cap 6 is attached by snap elements 7 in a groove 8 of the outer ring 2 and is provided with a central bore 9. The external hexagon 5 extends through this, to which a cylindrical casing 10 and a flange section 11 are connected. The cylindrical casing 10 forms an annular gap 12 with the bore 9. The flange section 11, which reaches behind the inner edge of the bore, forms an axial positive connection with the cover cap 6 and another radial annular gap 12. This results in a labyrinth seal. The design shown is therefore a compact, transport-safe unit.

Alternativ dazu ist in Figur 2 ein Beispiel mit handelsüblicher Inbusschraube 13 dargestellt. Die Bohrung 9 in der Abdeckkappe 6 ist dabei auf den Außendurchmesser des zu verwendenden Inbusschlüssels reduziert. Dadurch bildet die Stirnseite 14 des Schraubenkopfes selbst einen Formschluß zur Sicherung der Imbusschraube 13.Alternatively, an example with a commercially available Allen screw 13 is shown in Figure 2. The hole 9 in the cover cap 6 is reduced to the outer diameter of the Allen key to be used. As a result, the front side 14 of the screw head itself forms a positive connection to secure the Allen screw 13.

Claims (3)

SKF GmbH ji, i STP-ko.se *: ·*;· .".^C3jwei»iurt,*l5.07.1996 ··· ·· *,.· &THgr;&Egr; 9(5 (TTJ J)E; STP-ko.i Schutzansprüche SpannrolleSKF GmbH ji, i STP-ko.se *: ·*;· .".^C3jwei»iurt,*l5.07.1996 ··· ·· *,.· &THgr;&Egr; 9(5 (TTJ J)E; STP-ko.i Protection claims Tensioner 1. Spannrolle mit Befestigungsschraube und Abdeckkappe, dadurch gekennzeichnet, daß die Abdeckkappe (6) mit einer zentralen Bohrung (9) für die Verbindung zwischen Werkzeug und Befestigungsschraube (4, 13) versehen und diese über axial wirkende Formschlußelemente (4, 14) gegen Herausfallen gesichert ist.1. Tension roller with fastening screw and cover cap, characterized in that the cover cap (6) is provided with a central hole (9) for the connection between the tool and the fastening screw (4, 13) and this is secured against falling out by axially acting form-locking elements (4, 14). 2. Spannrolle nach Anspruch 1, dadurch gekennzeichnet, daß der Kopf der Befestigungsschraube (4) mit einem zylindrischen Mantel (10) in der Bohrung (9) angeordnet ist und einen hinter die Bohrung (9) greifenden Flanschabschnitt (11) aufweist.2. Tension pulley according to claim 1, characterized in that the head of the fastening screw (4) is arranged with a cylindrical casing (10) in the bore (9) and has a flange section (11) engaging behind the bore (9). 3. Spannrolle nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Befestigungsschraube als Inbusschraube (14) ausgeführt ist und mit ihrer Stirnseite hinter die Bohrung (9) greift.3. Tension pulley according to claim 1 or 2, characterized in that the fastening screw is designed as an Allen screw (14) and its front side engages behind the bore (9).
DE29612471U 1996-07-18 1996-07-18 Idler pulley Expired - Lifetime DE29612471U1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE29612471U DE29612471U1 (en) 1996-07-18 1996-07-18 Idler pulley
FR9707220A FR2751392B1 (en) 1996-07-18 1997-06-11 BELT TENSIONER, WITH FIXING SCREW AND PROTECTIVE CAP
IT97TO000522A IT1292775B1 (en) 1996-07-18 1997-06-17 ROLLER TENSIONER WITH FASTENING SCREW AND COVER

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE29612471U DE29612471U1 (en) 1996-07-18 1996-07-18 Idler pulley

Publications (1)

Publication Number Publication Date
DE29612471U1 true DE29612471U1 (en) 1996-09-12

Family

ID=8026647

Family Applications (1)

Application Number Title Priority Date Filing Date
DE29612471U Expired - Lifetime DE29612471U1 (en) 1996-07-18 1996-07-18 Idler pulley

Country Status (3)

Country Link
DE (1) DE29612471U1 (en)
FR (1) FR2751392B1 (en)
IT (1) IT1292775B1 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2771467A1 (en) * 1997-11-22 1999-05-28 Skf Gmbh Fastener device for belt pulley
DE10333673A1 (en) * 2003-07-24 2005-02-17 Ina-Schaeffler Kg Tension pulley for belt used in engine of vehicle, comprising sealing cap securing components of pulley unit
WO2006013022A1 (en) * 2004-07-30 2006-02-09 Schaeffler Kg Protective element for a bearing
DE102005057297A1 (en) * 2005-12-01 2007-06-21 Schaeffler Kg Deflection pulley for a traction device
DE102007031188A1 (en) * 2007-07-04 2009-01-08 Muhr Und Bender Kg Roller for e.g. belt drive, has cover plate provided with center hole and forming annular space with bearing inner ring of roller bearing, where plate of plate screw is axially secured in space and inserted in rotatable manner
DE102007044702A1 (en) * 2007-09-19 2009-04-09 Ab Skf camp
DE102015211867A1 (en) * 2015-06-25 2016-12-29 Volkswagen Aktiengesellschaft Arrangement of a rotatably mounted element on a housing

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1307674B1 (en) * 1998-02-05 2001-11-14 Koyo Seiko Co PULLEY GROUP
FR2889278B1 (en) * 2005-07-27 2008-09-12 Skf Ab ROLLER DEVICE FOR BELT
FR2902699B1 (en) 2006-06-26 2010-10-22 Skf Ab SUSPENSION STOP DEVICE AND FORCE LEG.
FR2906587B1 (en) 2006-10-03 2009-07-10 Skf Ab TENDERING ROLLER DEVICE.
FR2913081B1 (en) 2007-02-27 2009-05-15 Skf Ab DEBRAYABLE PULLEY DEVICE

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3027695C2 (en) * 1980-07-22 1987-02-12 Dr.Ing.H.C. F. Porsche Ag, 7000 Stuttgart Ignition distributor arrangement on internal combustion engines
FR2614382B1 (en) * 1987-04-24 1989-06-09 Valeo Distribution PULLEY FOR ROTARY MACHINE DRIVE

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2771467A1 (en) * 1997-11-22 1999-05-28 Skf Gmbh Fastener device for belt pulley
DE10333673A1 (en) * 2003-07-24 2005-02-17 Ina-Schaeffler Kg Tension pulley for belt used in engine of vehicle, comprising sealing cap securing components of pulley unit
US7435005B2 (en) 2003-07-24 2008-10-14 Schaeffler Kg Seal for an antifriction bearing
WO2006013022A1 (en) * 2004-07-30 2006-02-09 Schaeffler Kg Protective element for a bearing
DE102005057297A1 (en) * 2005-12-01 2007-06-21 Schaeffler Kg Deflection pulley for a traction device
US8651988B2 (en) 2005-12-01 2014-02-18 Schaeffler Technologies AG & Co. KG Deflection pulley for a traction means
DE102007031188A1 (en) * 2007-07-04 2009-01-08 Muhr Und Bender Kg Roller for e.g. belt drive, has cover plate provided with center hole and forming annular space with bearing inner ring of roller bearing, where plate of plate screw is axially secured in space and inserted in rotatable manner
DE102007044702A1 (en) * 2007-09-19 2009-04-09 Ab Skf camp
DE102007044702B4 (en) * 2007-09-19 2016-03-17 Ab Skf camp
DE102015211867A1 (en) * 2015-06-25 2016-12-29 Volkswagen Aktiengesellschaft Arrangement of a rotatably mounted element on a housing

Also Published As

Publication number Publication date
FR2751392A1 (en) 1998-01-23
FR2751392B1 (en) 1999-09-03
IT1292775B1 (en) 1999-02-11
ITTO970522A0 (en) 1997-06-17
ITTO970522A1 (en) 1998-12-17

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Legal Events

Date Code Title Description
R207 Utility model specification

Effective date: 19961024

R150 Utility model maintained after payment of first maintenance fee after three years

Effective date: 19991129

R151 Utility model maintained after payment of second maintenance fee after six years

Effective date: 20021022

R152 Utility model maintained after payment of third maintenance fee after eight years

Effective date: 20041116

R071 Expiry of right