ITTO970400A1 - LID FOR BEARING. - Google Patents

LID FOR BEARING. Download PDF

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Publication number
ITTO970400A1
ITTO970400A1 IT97TO000400A ITTO970400A ITTO970400A1 IT TO970400 A1 ITTO970400 A1 IT TO970400A1 IT 97TO000400 A IT97TO000400 A IT 97TO000400A IT TO970400 A ITTO970400 A IT TO970400A IT TO970400 A1 ITTO970400 A1 IT TO970400A1
Authority
IT
Italy
Prior art keywords
cover
bearing
lid
support
periphery
Prior art date
Application number
IT97TO000400A
Other languages
Italian (it)
Inventor
Helmut Hauck
Dieter Plossel
Armin Schlereth
Robert Stolz
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
Publication of ITTO970400A0 publication Critical patent/ITTO970400A0/it
Publication of ITTO970400A1 publication Critical patent/ITTO970400A1/en
Application granted granted Critical
Publication of IT1294392B1 publication Critical patent/IT1294392B1/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72Sealings
    • F16C33/723Shaft end sealing means, e.g. cup-shaped caps or covers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C43/00Assembling bearings
    • F16C43/04Assembling rolling-contact bearings
    • F16C43/045Mounting or replacing seals
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C13/00Rolls, drums, discs, or the like; Bearings or mountings therefor
    • F16C13/006Guiding 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/04Bearings 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
    • F16C19/08Bearings 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2226/00Joining parts; Fastening; Assembling or mounting parts
    • F16C2226/50Positive connections
    • F16C2226/70Positive connections with complementary interlocking parts
    • F16C2226/74Positive connections with complementary interlocking parts with snap-fit, e.g. by clips
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2361/00Apparatus or articles in engineering in general
    • F16C2361/63Gears with belts and pulleys
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H7/00Gearings for conveying rotary motion by endless flexible members
    • F16H7/08Means for varying tension of belts, ropes or chains 
    • F16H2007/0863Finally actuated members, e.g. constructional details thereof
    • F16H2007/0865Pulleys

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)
  • Sealing Devices (AREA)
  • Closures For Containers (AREA)
  • Pulleys (AREA)

Description

DESCRIZIONE DESCRIPTION

del brevetto per invenzione industriale of the patent for industrial invention

La presente invenzione si riferisce ad. un coperchio per cuscinetto secondo il concetto superiore della rivendicazione principale. The present invention relates to. a bearing cover according to the superior concept of the main claim.

I coperchi di questo tipo sono utilizzati per proteggere cuscinetti a rulli o supporti oscillanti di tenditori contro la penetrazione di sporco, acqua ecc. Per esempio sono fissati sull'anello esterno o sul componente incorporato del cuscinetto mediante elementi a scatto. Si è rivelata una soluzione semplice una scanalatura radiale in cui ingranano elementi di arresto del coperchio stampato a iniezione in un pezzo di plastica. La scanalatura radiale è per lo più dotata di superfici di appoggio oblique per cui il coperchio è stabilizzato ed è ottenuta una buona tenuta. La forma del coperchio è adattata alle condizioni di montaggio e può essere a forma di disco o di vaso per cui l'intero spazio del cuscinetto e la parte frontale dell'asse, ecc., sono chiusi. Covers of this type are used to protect roller bearings or oscillating supports of tensioners against the penetration of dirt, water, etc. For example, they are fixed on the outer ring or on the built-in component of the bearing by means of snap elements. It turned out to be a simple solution a radial groove in which stop elements of the injection-molded lid mesh in a piece of plastic. The radial groove is mostly equipped with oblique bearing surfaces so that the cover is stabilized and a good seal is obtained. The shape of the cover is adapted to the mounting conditions and can be in the shape of a disc or vessel so that the entire bearing space and the front of the shaft, etc., are closed.

Un coperchio, tuttavia senza scanalatura anulare sul supporto, è per esempio noto dal DE-GM 93 20 478. A lid, however without annular groove on the holder, is known for example from DE-GM 93 20 478.

Per impedire che il coperchio ruoti nella scanalatura anulare e risulti così una tenuta inaffidabile, con un dimensionamento corrispondente, si aspira ad ottenere un effetto di bloccaggio radiale elevato. Questo rende tuttavia difficile il montaggio e spesso determina inavvertitamente il danno del coperchio e quindi una tenuta insufficiente . In order to prevent the cover from rotating in the annular groove and thus resulting in an unreliable seal, with a corresponding dimensioning, it is aspired to obtain a high radial locking effect. However, this makes assembly difficult and often inadvertently leads to damage to the cover and therefore insufficient sealing.

E' compito della presente invenzione realizzare un coperchio del tipo citato all'inizio che possa essere montato affidabilmente in modo antitorsione con una tenuta costantemente valida ed un montaggio semplice. It is the object of the present invention to provide a cover of the type mentioned at the beginning which can be reliably mounted in an anti-twisting manner with a constantly valid seal and simple assembly.

Il compito è risolto mediante sporgenze di sicurezza rivolte radialmente, distribuite sulla periferia, disposte su una superficie periferica del supporto sotto precarico, agenti contro la torsione. The task is solved by means of radially oriented safety projections, distributed on the periphery, arranged on a peripheral surface of the support under preload, acting against torsion.

Le caratteristiche secondo la presente invenzione sono descritte di seguito nell'esempio rappresentato nel disegno. The characteristics according to the present invention are described below in the example shown in the drawing.

Mostrano : They show:

la Figura 1 la sezione longitudinale parziale di un supporto per un tenditore a rullo con coperchio, la Figura 2 la rappresentazione ingrandita del fissaggio secondo un dettaglio X della Fig. 1 e la Figura 3 la sezione trasversale parziale lungo la linea A-A secondo la Fig. 2. Figure 1 the partial longitudinal section of a support for a roller tensioner with cover, Figure 2 the enlarged representation of the fastening according to a detail X of Fig. 1 and Figure 3 the partial cross-section along the line A-A according to Fig. 2.

Il tenditore a rullo rappresentato nelle figure, come non è stato meglio rappresentato, poggia con l'anello interno 1 su un perno di supporto 2 e, sull'anello esterno 3, è dotato di un rivestimento di scorrimento 4. Una parte della superficie di rivestimento 5 dell'anello esterno 3 è lasciata libera ed è prevista per l'alloggiamento di un coperchio 6. A tale scopo nell'anello esterno 3 è ricavata una scanalatura radiale 7. The roller tensioner shown in the figures, as it has not been better represented, rests with the inner ring 1 on a support pin 2 and, on the outer ring 3, is provided with a sliding coating 4. A part of the surface of coating 5 of the outer ring 3 is left free and is provided for housing a cover 6. For this purpose, a radial groove 7 is made in the outer ring 3.

Il coperchio 6 è sostanzialmente eseguito a forma di vaso con un tratto 8 del bordo piano e in un pezzo di <'>plastica. Qui è formata una sporgenza cilindrica 9 che, sulla superficie del foro, presenta una sporgenza radiale 10 anulare con il profilo della scanalatura radiale 7 di forma adattata . The lid 6 is substantially made in the shape of a vase with a portion 8 of the flat edge and in a piece of plastic. A cylindrical projection 9 is formed here which, on the surface of the hole, has an annular radial projection 10 with the profile of the radial groove 7 having an adapted shape.

Tra la sporgenza radiale 10 ed il tratto del bordo 8, come è meglio riconoscibile nelle Figure 2 e 3, sono previste sporgenze di sicurezza 11 distribuite sulla periferia. Nella direzione periferica sono eseguite in modo relativamente sottile e a cuneo. Nell'esempio rappresentato sono disposte tre di queste sporgenze di sicurezza 11 sfalsate di 120 gradi. Between the radial projection 10 and the portion of the edge 8, as can be better recognized in Figures 2 and 3, safety projections 11 distributed on the periphery are provided. In the peripheral direction they are performed relatively thinly and wedge-shaped. In the example shown, three of these safety projections 11 are arranged offset by 120 degrees.

Sovrapponendo il coperchio 6, per prima cosa, la sporgenza cilindrica 9 si allarga con un'inclinazione di avvicinamento 12 nella zona elastica della plastica. Con un'ulteriore sovrapposizione, la sporgenza radiale 10 si innesta nella scanalatura radiale 7 e tira il coperchio 6 sulle superfici scanalate oblique 13 della scanalatura radiale 7 fino all'appoggio del tratto del bordo 8 sulla superficie laterale dell'anello esterno 3. By overlapping the lid 6, first of all, the cylindrical projection 9 widens with an approach inclination 12 in the elastic zone of the plastic. With a further overlap, the radial projection 10 engages in the radial groove 7 and pulls the cover 6 on the oblique grooved surfaces 13 of the radial groove 7 until the edge section 8 rests on the lateral surface of the outer ring 3.

Le notevoli forze antagoniste della sporgenza cilindrica allargata 9 determinano una deformazione quasi totale'delle tre sporgenze di sicurezza 11 di piccolo volume sul tratto interessato della superficie di rivestimento 5 dell'anello esterno 3. In questo modo, sui tre punti periferici si instaura una pressione superficiale dalla forza superiore alla media in collegamento con l'anello esterno 3 e quindi una sicurezza antitorsione ad estremo accoppiamento di forza. The considerable opposing forces of the enlarged cylindrical projection 9 cause an almost total deformation of the three small-volume safety projections 11 on the affected portion of the covering surface 5 of the outer ring 3. In this way, a pressure is established on the three peripheral points. surface with above-average strength in connection with the outer ring 3 and thus an anti-torsion safety with extreme force coupling.

Oltre alla forma descritta, chiusa ad anello, della sporgenza cilindrica 9 e della sporgenza radiale 10, questi tratti, efficaci anche singolarmente, possono essere separati da fessure di separazione. In addition to the shape described, closed in a ring, of the cylindrical projection 9 and of the radial projection 10, these portions, which are also effective individually, can be separated by separation slits.

Claims (2)

RIVENDICAZIONI 1. Coperchio per cuscinetto di tenditori o simili con elementi di arresto estendentisi lungo la periferia, ingrananti in una scanalatura anulare, con tratti per il centraggio e l'appoggio assiale sul supporto, caratterizzato da sporgenze di sicurezza rivolte radialmente, distribuite sulla periferia, disposte su una superficie periferica (5) del supporto sotto precarico, agenti contro la torsione. CLAIMS 1. Cover for bearing of tensioners or the like with stop elements extending along the periphery, meshing in an annular groove, with portions for centering and axial support on the support, characterized by safety protrusions turned radially, distributed on the periphery, arranged on a peripheral surface (5) of the support under preload, acting against twisting. 2. Coperchio secondo la rivendicazione 1, caratterizzato da sporgenze di sicurezza (11) profilate a cuneo in direzione periferica, disposte nella zona di piegatura degli elementi di arresto (10). Lid according to claim 1, characterized by wedge-shaped safety projections (11) in the peripheral direction, arranged in the folding area of the stop elements (10).
IT97TO000400A 1996-05-25 1997-05-09 LID FOR BEARING. IT1294392B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE29609380U DE29609380U1 (en) 1996-05-25 1996-05-25 Lids for bearings

Publications (3)

Publication Number Publication Date
ITTO970400A0 ITTO970400A0 (en) 1997-05-09
ITTO970400A1 true ITTO970400A1 (en) 1998-11-09
IT1294392B1 IT1294392B1 (en) 1999-03-24

Family

ID=8024412

Family Applications (1)

Application Number Title Priority Date Filing Date
IT97TO000400A IT1294392B1 (en) 1996-05-25 1997-05-09 LID FOR BEARING.

Country Status (4)

Country Link
DE (1) DE29609380U1 (en)
FR (1) FR2749048B1 (en)
GB (1) GB2313417B (en)
IT (1) IT1294392B1 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29711143U1 (en) * 1997-06-26 1998-10-29 Sachsenring Entwicklungsgesellschaft mbH, 08058 Zwickau Bearing, especially for a jig
DE20019278U1 (en) * 2000-11-13 2001-04-05 Skf Gmbh, 97421 Schweinfurt Connection between a support element and a bearing
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
DE102005057297A1 (en) * 2005-12-01 2007-06-21 Schaeffler Kg Deflection pulley for a traction device
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.
FR2907526B1 (en) * 2006-10-20 2009-06-26 Skf Ab TENDER ROLL OR ROLLER DEVICE.
FR2913081B1 (en) 2007-02-27 2009-05-15 Skf Ab DEBRAYABLE PULLEY DEVICE
ITTO20120364A1 (en) * 2012-04-24 2013-10-25 Skf Ab SENSOR HOLDER COVER FOR A HUB-WHEEL BEARING
DE102017119250B3 (en) * 2017-08-23 2018-08-02 Schaeffler Technologies AG & Co. KG Cover system for wheelset shafts of rail vehicles
DE102018114240A1 (en) * 2018-06-14 2019-12-19 Schaeffler Technologies AG & Co. KG roller bearing

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE306645B (en) * 1967-05-16 1968-12-02 Skf Svenska Kullagerfab Ab
DE2715416A1 (en) * 1977-04-06 1978-10-12 Schaeffler Waelzlager Gmbh ROLLER BEARING WITH FRONT END CAP
GB2058241B (en) * 1979-07-03 1983-04-27 Ransome Hoffmann Pollard Covers for rolling-element bearing assemblies
IT1273698B (en) * 1994-07-28 1997-07-09 Dayco Europe Spa PROTECTION DEVICE FOR PULLEY BEARINGS IN BELT DRIVES

Also Published As

Publication number Publication date
GB2313417A (en) 1997-11-26
IT1294392B1 (en) 1999-03-24
GB2313417B (en) 1999-10-06
DE29609380U1 (en) 1996-08-14
FR2749048B1 (en) 1999-06-18
FR2749048A1 (en) 1997-11-28
GB9709695D0 (en) 1997-07-02
ITTO970400A0 (en) 1997-05-09

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0001 Granted