ITMI20111985A1 - HUB JOINT-FLANGED CROWN OF A MOTORCYCLE WHEEL. - Google Patents

HUB JOINT-FLANGED CROWN OF A MOTORCYCLE WHEEL. Download PDF

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Publication number
ITMI20111985A1
ITMI20111985A1 IT001985A ITMI20111985A ITMI20111985A1 IT MI20111985 A1 ITMI20111985 A1 IT MI20111985A1 IT 001985 A IT001985 A IT 001985A IT MI20111985 A ITMI20111985 A IT MI20111985A IT MI20111985 A1 ITMI20111985 A1 IT MI20111985A1
Authority
IT
Italy
Prior art keywords
hub
crown
flanged
frame
flanged crown
Prior art date
Application number
IT001985A
Other languages
Italian (it)
Inventor
Portaluppi Franco
Original Assignee
Pz5 S R L
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 Pz5 S R L filed Critical Pz5 S R L
Priority to IT001985A priority Critical patent/ITMI20111985A1/en
Publication of ITMI20111985A1 publication Critical patent/ITMI20111985A1/en

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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
    • F16C17/00—Sliding-contact bearings for exclusively rotary movement
    • F16C17/04—Sliding-contact bearings for exclusively rotary movement for axial load only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B27/00—Hubs
    • B60B27/02—Hubs adapted to be rotatably arranged on axle
    • B60B27/04—Hubs adapted to be rotatably arranged on axle housing driving means, e.g. sprockets
    • B60B27/042—Hubs adapted to be rotatably arranged on axle housing driving means, e.g. sprockets comprising a rotational dampers
    • 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
    • F16C17/00—Sliding-contact bearings for exclusively rotary movement
    • F16C17/02—Sliding-contact bearings for exclusively rotary movement for radial load only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B2900/00—Purpose of invention
    • B60B2900/10—Reduction of
    • B60B2900/114—Size
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B2900/00—Purpose of invention
    • B60B2900/50—Improvement of
    • B60B2900/511—Sealing
    • B60B2900/5112—Sealing against dust or dirt
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/10—Road Vehicles
    • B60Y2200/12—Motorcycles, Trikes; Quads; Scooters

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)

Description

DESCRIZIONE DESCRIPTION

“Giunto mozzo-corona flangiata di una ruota da motocicletta†⠀ œFlanged hub-crown joint of a motorcycle wheelâ €

La presente invenzione concerne un giunto mozzo-corona flangiata di una mota posteriore da motocicletta. The present invention relates to a flanged hub-crown joint of a motorcycle rear end.

Normalmente un assieme mozzo-corona flangiata, calettato su un perno solidale ad un telaio di una motocicletta, comprende una corona dentata, una flangia, un parastrappi, un mozzo, un freno a disco. La corona dentata à ̈ collegata ad un pignone di una scatola del cambio di un motore per mezzo di una trasmissione flessibile, a cinghia o a catena, o per mezzo di una trasmissione omocinetica, mediante una coppia di giunti a snodo. La corona dentata à ̈ altresì solidale alla flangia calettata sul perno del telaio della motocicletta mediante cuscinetti formando un assieme denominato corona flangiata. Il parastrappi trasmette una coppia torcente tra la corona flangiata ed il mozzo calettato sul perno del telaio della motocicletta mediante cuscinetti. Il freno a disco à ̈ solidale al mozzo. Normally a flanged hub-crown assembly, keyed on a pin integral with a frame of a motorcycle, comprises a toothed crown, a flange, a flexible coupling, a hub, a disc brake. The crown gear is connected to a pinion of an engine gearbox by means of a flexible transmission, belt or chain, or by means of a constant velocity transmission, by means of a pair of articulated joints. The crown gear is also integral with the flange keyed on the pivot of the motorcycle frame by means of bearings forming an assembly called a flanged crown. The flexible coupling transmits a torque between the flanged crown and the hub keyed on the pivot of the motorcycle frame by means of bearings. The disc brake is integral with the hub.

In particolare il parastrappi modula la coppia torcente trasmessa nella rotazione relativa del mozzo e della corona flangiata, assorbendo le sovra-elongazioni della coppia torcente, trasmesse dal motore durante l’accelerazione e la decelerazione e dal freno a disco durante la frenata. In particular, the flexible coupling modulates the torque transmitted in the relative rotation of the hub and of the flanged crown, absorbing the overshoot of the torque transmitted by the motor during acceleration and deceleration and by the disc brake during braking.

Un assieme mozzo-corona flangiata calettato su un perno solidale ad un telaio di una motocicletta subisce delle sollecitazioni di torsione associate a sollecitazioni assiali causate dallo sbandamento indotto sia dalla corona flangiata sia dal fieno a disco. La trasmissione della coppia torcente attraverso l’assieme mozzo-corona flangiata comporta forze di taglio e forze di sbandamento laterale. I cuscinetti di calettamento della corona flangiata e del mozzo supportano sia i carichi indotti dalla coppia torcente sia i carichi indotti dallo sbandamento laterale, permettendo contemporaneamente la rotazione relativa del mozzo e della corona flangiata. A flanged hub-crown assembly keyed on a pin integral with a motorcycle frame undergoes torsional stresses associated with axial stresses caused by the heeling induced both by the flanged crown and by the disc hay. The transmission of torque through the flanged hub-crown assembly involves shear forces and lateral heeling forces. The shrink fit bearings of the flanged crown and hub support both the loads induced by the torque and the loads induced by lateral heeling, allowing at the same time the relative rotation of the hub and the flanged crown.

Lo stato dell’arte considera noto il ricorso a combinazioni di cuscinetti radiali e reggispinta per sostenere sia le forze di taglio, dirette radialmente, sia le forze di sbandamento laterale lungo l’asse del mozzo. Una combinazione di cuscinetto radiale e cuscinetto reggispinta à ̈ descritta nel brevetto US3690399, riguardante l’assieme di un asse di una ruota di un’automobile. The state of the art considers the use of combinations of radial and thrust bearings to support both the radially directed shear forces and the lateral heeling forces along the hub axis to be known. A combination of radial bearing and thrust bearing is described in US patent 3690399, concerning the assembly of an axle of an automobile wheel.

La soluzione descritta nel brevetto US3690399 riguardante l’asse di un’automobile à ̈ stata traslata con successo sull’assieme mozzo-corona flangiata per realizzare la rotazione relativa tra mozzo e corona flangiata, costituendo l’oggetto della presente invenzione. The solution described in the patent US3690399 concerning the axle of an automobile has been successfully translated onto the hub-flanged crown assembly to achieve the relative rotation between the hub and the flanged crown, constituting the object of the present invention.

Scopo principale della presente invenzione à ̈ realizzare un assieme mozzo-corona flangiata capace di assorbire le forze radiali e di contenere le forze di sbandamento, consentendo al tempo stesso una rotazione relativa precisa e ad attrito ridotto tra il mozzo e la corona flangiata. The main purpose of the present invention is to provide a flanged hub-crown assembly capable of absorbing radial forces and limiting heeling forces, while allowing precise, low-friction relative rotation between the hub and the flanged crown.

Costituisce ulteriore scopo della presente invenzione realizzare un assieme mozzo-corona flangiata del tipo comprendente una combinazione di cuscinetti radiali e reggispinta riducendo l’ingombro assiale e preservando dalla polvere la parti interne in movimento, in particolare i cuscinetti. A further object of the present invention is to provide a flanged hub-crown assembly of the type comprising a combination of radial and thrust bearings, reducing the axial bulk and preserving the internal moving parts, in particular the bearings, from dust.

Il suddetto ed altri scopi e vantaggi dell’invenzione, quali risulteranno dal seguito della descrizione, vengono raggiunti con un assieme mozzo-corona flangiata di una ruota, calettato su un fulcro del telaio di una motocicletta, del tipo comprendente un mozzo collegato al fulcro del telaio mediante cuscinetti radiali, una corona flangiata collegata al fulcro del telaio mediante un cuscinetto radiale, un parastrappi il quale si deforma elasticamente modulando la trasmissione della coppia torcente durante la rotazione reciproca del mozzo rispetto alla corona flangiata, caratterizzato dal fatto che una sede circolare del mozzo alloggia un cuscinetto reggispinta combaciante con una superficie frontale della corona flangiata. The above and other objects and advantages of the invention, as will emerge from the following description, are achieved with a flanged hub-crown assembly of a wheel, keyed onto a fulcrum of the frame of a motorcycle, of the type comprising a hub connected to the fulcrum. of the frame by means of radial bearings, a flanged crown connected to the fulcrum of the frame by a radial bearing, a flexible coupling which is elastically deformed by modulating the transmission of the torque during the reciprocal rotation of the hub with respect to the flanged crown, characterized by the fact that a circular seat of the hub houses a thrust bearing mating with a front surface of the flanged crown.

Forme di realizzazione preferite e varianti non banali della presente invenzione formano l’oggetto delle rivendicazioni dipendenti. Preferred embodiments and non-trivial variants of the present invention form the subject of the dependent claims.

La presente invenzione verrà meglio descritta da alcune forme preferite di realizzazione, fomite a titolo esemplificativo e non limitativo, con riferimento al disegno allegato di FIG. 1 di una vista in sezione in un piano passante per l’asse di rotazione di un assieme mozzo-corona flangiata appartenente alla mota posteriore di una motocicletta. The present invention will be better described by some preferred embodiments, provided by way of non-limiting example, with reference to the attached drawing of FIG. 1 of a sectional view in a plane passing through the axis of rotation of a hub-flanged crown assembly belonging to the rear end of a motorcycle.

Un mozzo 1 di una mota posteriore (non raffigurata) Ã ̈ un corpo assialesimmetrico delimitato da flange 11 e 12, in cui alloggiano cuscinetti di tipo radiale 4 e 5, calettati su un fulcro (non raffigurato) del telaio di una motocicletta. La flangia 11 Ã ̈ conformata in modo da alloggiare ed interagire con i componenti elastici di un parastrappi 3. La flangia 12 comprende una sede 13 adibita al centraggio ed al sostegno di un disco di un freno (non raffigurato). A hub 1 of a rear bike (not shown) is an axial symmetrical body delimited by flanges 11 and 12, housing radial type bearings 4 and 5, keyed on a fulcrum (not shown) of the frame of a motorcycle. The flange 11 is shaped so as to house and interact with the elastic components of a flexible coupling 3. The flange 12 comprises a seat 13 used for centering and supporting a brake disc (not shown).

Una corona flangiata 2 Ã ̈ un disco cilindrico in cui alloggia un cuscinetto di tipo radiale 6 calettato sul fulcro del telaio della motocicletta, comprendente una sede circolare 21 adibita a centrare e sostenere una corona dentata (non raffigurata) collegata ad un pignone di una scatola cambio del motore per mezzo di una trasmissione flessibile, a cinghia o a catena, o per mezzo di una trasmissione omocinetica, mediante una coppia di giunti a snodo. La corona flangiata 2 Ã ̈ conformata in modo da alloggiare ed interagire con i componenti elastici del parastrappi 3. A flanged crown 2 is a cylindrical disc which houses a radial type bearing 6 keyed to the fulcrum of the motorcycle frame, comprising a circular seat 21 used to center and support a toothed crown (not shown) connected to a pinion of a box engine change by means of a flexible transmission, belt or chain, or by means of a homokinetic transmission, by means of a pair of articulated joints. The flanged crown 2 is shaped in such a way as to house and interact with the elastic components of the flexible coupling 3.

Il parastrappi 3 à ̈ del tipo a disco di gomma delimitato da un foro centrale 31 e da un profilo circolare periferico 32, munito di una serie di tasselli sporgenti e di forma diversa impegnati nel contatto alternato con il mozzo 1 e con la corona flangiata 2. Durante la rotazione reciproca del mozzo 1 rispetto alla corona flangiata 2 il parastrappi 3 si deforma elasticamente modulando la trasmissione della coppia torcente lungo l’asse dell’assieme mozzo-corona flangiata. The flexible coupling 3 is of the rubber disc type delimited by a central hole 31 and by a peripheral circular profile 32, equipped with a series of protruding and differently shaped blocks engaged in alternating contact with the hub 1 and with the flanged crown 2 During the reciprocal rotation of the hub 1 with respect to the flanged crown 2, the flexible coupling 3 is elastically deformed by modulating the transmission of the torque along the axis of the hub-flanged crown assembly.

Una sede circolare 14 del mozzo 1 alloggia un cuscinetto reggispinta 7 il quale combacia con una superficie frontale 22 della corona flangiata 2 contribuendo a facilitare la rotazione relativa tra il mozzo 1 e la corona flangiata 2. A circular seat 14 of the hub 1 houses a thrust bearing 7 which mates with a front surface 22 of the flanged crown 2 helping to facilitate relative rotation between the hub 1 and the flanged crown 2.

Un distanziale 8, posto tra i due cuscinetti radiali 5 e 6 appartenenti rispettivamente al mozzo 1 ed alla corona flangiata 2, viene calibrato per permettere di regolare l’entità della spinta assiale gravante sul cuscinetto reggispinta 7. A spacer 8, placed between the two radial bearings 5 and 6 belonging respectively to the hub 1 and the flanged crown 2, is calibrated to allow to adjust the amount of axial thrust on the thrust bearing 7.

Il cuscinetto reggispinta 7 Ã ̈ trattenuto nella propria sede da un anello 9 il quale alloggia al suo interno anelli di tenuta idraulica 91 e 92 calettati rispettivamente sulla sede cilindrica della corona flangiata 2 e del mozzo 1. The thrust bearing 7 is held in its seat by a ring 9 which houses the hydraulic seal rings 91 and 92 keyed respectively on the cylindrical seat of the flanged crown 2 and of the hub 1.

Il giunto mozzo-corona flangiata sopra descritto risolve il problema del bilanciamento delle forze di sbandamento laterale e migliora le condizioni per una efficace rotazione relativa tra il mozzo 1 e la corona flangiata 2 mantenendo gli ingombri assiali entro valori ristretti. The hub-flanged crown joint described above solves the problem of balancing the lateral heeling forces and improves the conditions for effective relative rotation between the hub 1 and the flanged crown 2 while keeping the axial dimensions within restricted values.

Grazie all’uso dell’anello 9 munito di anelli di tenuta idraulica 91 e 92 si à ̈ ottenuto un assieme mozzo-corona flangiata esente da polvere soprattutto nella sede interna dei cuscinetti. Thanks to the use of the ring 9 equipped with hydraulic sealing rings 91 and 92, a dust-free flanged hub-crown assembly was obtained, especially in the internal seat of the bearings.

L’anello 9 ha sostanzialmente sezione a T in cui l’estremità inferiore del gambo 93 della T à ̈ in battuta sul cuscinetto reggispinta 7. Detta battuta facilita lo smontaggio del giunto, in particolare il disaccoppiamento della corona 2 dal mozzo 1 lasciando il cuscinetto reggispinta 7 accoppiato al mozzo 1; questo permette all’ occorrenza, per esempio, una rapida e semplice sostituzione del parastrappi 3. The ring 9 has a substantially T-shaped section in which the lower end of the stem 93 of the T is in abutment on the thrust bearing 7. This abutment facilitates the disassembly of the joint, in particular the decoupling of the crown 2 from the hub 1, leaving the thrust bearing 7 coupled to the hub 1; this allows, if necessary, for example, a quick and simple replacement of the flexible coupling 3.

L’uso del distanziale calibrato 8 consente di regolare l’entità delle forze assiali trasmesse durante la rotazione reciproca del mozzo 1 rispetto alla corona flangiata 2. The use of the calibrated spacer 8 allows to adjust the amount of the axial forces transmitted during the reciprocal rotation of the hub 1 with respect to the flanged crown 2.

Claims (4)

RIVENDICAZIONI 1. Assieme mozzo-corona flangiata di una ruota, calettato su un fulcro del telaio di una motocicletta, del tipo comprendente un mozzo (1) collegato al fulcro del telaio mediante cuscinetti radiali (4, 5), una corona flangiata (2) collegata al fulcro del telaio mediante un cuscinetto radiale (6), un parastrappi (3) il quale si deforma elasticamente modulando la trasmissione della coppia torcente durante la rotazione reciproca del mozzo (1) rispetto alla corona flangiata (2), caratterizzato dal fatto che una sede circolare (14) del mozzo (1) alloggia un cuscinetto reggispinta (7) combaciante con una superficie frontale (22) della corona flangiata (2). CLAIMS 1. Hub-flanged crown assembly of a wheel, keyed on a fulcrum of the frame of a motorcycle, of the type comprising a hub (1) connected to the fulcrum of the frame by means of radial bearings (4, 5), a flanged crown (2) connected to the fulcrum of the frame by means of a radial bearing (6), a flexible coupling (3) which is elastically deformed by modulating the transmission of the torque during the reciprocal rotation of the hub (1) with respect to the flanged crown (2), characterized by the fact that a circular seat (14) of the hub (1) houses a thrust bearing (7) which mates with a front surface (22) of the flanged crown (2). 2. Assieme mozzo-corona secondo la rivendicazione 1, caratterizzato dal fatto che un distanziale calibrato (8) à ̈ posto tra due cuscinetti radiali (5, 6) appartenenti rispettivamente al mozzo (1) ed alla corona flangiata (2). 2. Hub-crown assembly according to claim 1, characterized in that a calibrated spacer (8) is placed between two radial bearings (5, 6) belonging respectively to the hub (1) and to the flanged crown (2). 3. Assieme mozzo-corona secondo la rivendicazione 1 o 2, caratterizzato dal fatto che il cuscinetto reggispinta (7) à ̈ trattenuto nella propria sede da un anello (9) il quale alloggia al suo interno anelli di tenuta idraulica (91, 92) calettati sulla sede cilindrica della corona flangiata (2) e del mozzo (1). 3. Hub-crown assembly according to claim 1 or 2, characterized in that the thrust bearing (7) is held in its seat by a ring (9) which houses the hydraulic sealing rings (91, 92) inside it. keyed on the cylindrical seat of the flanged crown (2) and of the hub (1). 4. Assieme mozzo-corona secondo la rivendicazione 3, caratterizzato dal fatto che l’anello (9) ha sezione a T in cui l’estremità inferiore del gambo (93) della T à ̈ in battuta sul cuscinetto reggispinta (7).4. Hub-crown assembly according to claim 3, characterized in that the ring (9) has a T section in which the lower end of the stem (93) of the T is in contact with the thrust bearing (7) .
IT001985A 2011-11-03 2011-11-03 HUB JOINT-FLANGED CROWN OF A MOTORCYCLE WHEEL. ITMI20111985A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
IT001985A ITMI20111985A1 (en) 2011-11-03 2011-11-03 HUB JOINT-FLANGED CROWN OF A MOTORCYCLE WHEEL.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT001985A ITMI20111985A1 (en) 2011-11-03 2011-11-03 HUB JOINT-FLANGED CROWN OF A MOTORCYCLE WHEEL.

Publications (1)

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ITMI20111985A1 true ITMI20111985A1 (en) 2013-05-04

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IT001985A ITMI20111985A1 (en) 2011-11-03 2011-11-03 HUB JOINT-FLANGED CROWN OF A MOTORCYCLE WHEEL.

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4101223A1 (en) * 1990-01-17 1991-07-18 Zahnradfabrik Friedrichshafen Vehicle wheel bearing system - has hub in bearing in washer and thrust bearing in support
US20020149258A1 (en) * 2001-04-16 2002-10-17 Paul Lew Wheel hub
US20040222693A1 (en) * 2003-03-19 2004-11-11 Hidetoshi Toyoda Wheel structure and wheel mounting method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4101223A1 (en) * 1990-01-17 1991-07-18 Zahnradfabrik Friedrichshafen Vehicle wheel bearing system - has hub in bearing in washer and thrust bearing in support
US20020149258A1 (en) * 2001-04-16 2002-10-17 Paul Lew Wheel hub
US20040222693A1 (en) * 2003-03-19 2004-11-11 Hidetoshi Toyoda Wheel structure and wheel mounting method

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