EP1220706B1 - Unite de freinage pour bicyclettes - Google Patents

Unite de freinage pour bicyclettes Download PDF

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Publication number
EP1220706B1
EP1220706B1 EP00964568A EP00964568A EP1220706B1 EP 1220706 B1 EP1220706 B1 EP 1220706B1 EP 00964568 A EP00964568 A EP 00964568A EP 00964568 A EP00964568 A EP 00964568A EP 1220706 B1 EP1220706 B1 EP 1220706B1
Authority
EP
European Patent Office
Prior art keywords
braking assembly
braking
driving wheel
rigid frame
bicycle
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
EP00964568A
Other languages
German (de)
English (en)
Other versions
EP1220706A1 (fr
Inventor
Massimo Peruzzo
Gilberto Parolin
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.)
Officine Parolin SNC Di Parolin Stefano Peruzzo Massimo E C
Original Assignee
Officine Parolin SNC Di Parolin Stefano Peruzzo Massimo E C
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 Officine Parolin SNC Di Parolin Stefano Peruzzo Massimo E C filed Critical Officine Parolin SNC Di Parolin Stefano Peruzzo Massimo E C
Publication of EP1220706A1 publication Critical patent/EP1220706A1/fr
Application granted granted Critical
Publication of EP1220706B1 publication Critical patent/EP1220706B1/fr
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Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B21/00—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices
    • A63B21/005—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices using electromagnetic or electric force-resisters
    • A63B21/0051—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices using electromagnetic or electric force-resisters using eddy currents induced in moved elements, e.g. by permanent magnets
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B69/00—Training appliances or apparatus for special sports
    • A63B69/16—Training appliances or apparatus for special sports for cycling, i.e. arrangements on or for real bicycles
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B69/00—Training appliances or apparatus for special sports
    • A63B69/16—Training appliances or apparatus for special sports for cycling, i.e. arrangements on or for real bicycles
    • A63B2069/164—Training appliances or apparatus for special sports for cycling, i.e. arrangements on or for real bicycles supports for the rear of the bicycle, e.g. for the rear forks
    • A63B2069/165—Training appliances or apparatus for special sports for cycling, i.e. arrangements on or for real bicycles supports for the rear of the bicycle, e.g. for the rear forks rear wheel hub supports

Definitions

  • the invention relates to a bicycle braking assembly to carry out training of cyclists.
  • GB-475207 discloses an exercises machine, particularly a bicycle, where the driving wheel engages and drives a movable support comprising an endless band carried by rollers.
  • braking assemblies of known type are applied to braking stands used in gymnasia and generally in closed rooms, comprising a tripod supporting the bicycle which is arranged in a vertical position with the driving wheel raised from the ground and engaged with the braking means.
  • the braking assemblies comprise one or more rollers with a substantially horizontal axis contacting the tyre of the driving wheel and connected to an electromagnetic, hydraulic or mechanical brake provided with regulation means adapted to change the resisting torque.
  • the above mentioned braking assemblies however have some drawbacks.
  • a first drawback consists in that in use a friction is generated between the wheel and the braking rollers so that the tyre is quickly deteriorated.
  • a further drawback consists in that in use a considerable noise is generated that sometimes cannot be tolerated for instance when the braking assembly is applied on braking stands used in gymnasia and generally in closed rooms.
  • the braking assembly comprises a couple of opposed contrasting rollers that are holding a grip with the edge of the rim of the driving wheel that is kept raised from the ground by a stand fixed to the hub.
  • the above mentioned braking assemblies with opposed rollers and related braking stands are actually solving the problem of noise and tyre wear and can be used both for racing bicycles and bicycles of mountain bike type.
  • a further drawback consists in that fitting the bicycle on the braking stand using said braking assemblies, is less easy and quick because it is necessary to use a particular device being part of the braking assembly, adapted to spread the contrasting rollers in order to place the wheel between the rollers.
  • Last but not least drawback consists in that a friction is generated between rim and rollers, obliging user to replace said rollers from time to time in order to keep the braking assembly always perfectly efficient.
  • the present invention aims to remove said drawbacks.
  • a first object of the invention is a bicycle braking assembly that reduces considerably wear of the tyre of the driving wheel contacting the braking means in comparison with the braking assemblies of equivalent known type.
  • Another object of the invention is a braking assembly having an operation noise lower than the braking assemblies of equivalent known type.
  • a further object of the invention is a braking assembly inducing less vibrations in the bicycle in use.
  • Still a further object of the invention is a braking assembly of simpler construction and with more reliable operation in comparison with braking assemblies of known type available on the market and with corresponding performances.
  • a bicycle braking assembly particularly suitable for training of cyclists, that according to the main claim is constrained to a support structure and is provided with braking means cooperating with the bicycle driving wheel so as to generate a resisting torque opposing the rotation applied by the cyclist to said driving wheel through the pedals and is characterized in that said braking means comprise at least a flexible belt with mainly longitudinal development arranged with a perimetral adherence to tyre of said driving wheel for at least a portion of its circumference and wound as a closed loop between at least a couple of rotating rollers, at least one of said rollers being operatively connected to energy dissipation means.
  • the rotating rollers are belonging to a rigid frame supported by a support bracket which is constrained to the support structure.
  • the braking assembly is preferably used with a braking stand comprising a tripod supporting the bicycle at the hub of the driving wheel and keeping the bicycle in a vertical position with the driving wheel raised from the ground.
  • the tripod is the support structure to which the support bracket of the braking assembly is fixed.
  • Proper adjustment means of the screw and nut screw type allow to change the position of the rigid frame and consequently of the flexible belt in respect of the driving wheel so as to adjust the braking stand to the different size of the bicycles.
  • the couple of revolving rollers comprises a first roller with an internal grooved surface connected to energy dissipation means and a second roller with outer smooth surface, parallel to one another and revolving around fixed rotation axes of the rigid frame.
  • the energy dissipation means comprise a disc of amagnetic material, preferably aluminum, fixedly keyed to the first roller and arranged between a couple of magnetic pieces supported by a moveable fork that can be moved by actuating means in respect of the disc.
  • actuating means comprise an operating lever fixed to the bicycle frame and driving a flexible wire that moves the fork so as to change the surface area of the magnetic pieces and of the facing disc.
  • the braking assembly of the invention may be applied to a support stand of a bicycle arranged with the driving wheel raised from the ground, so as to obtain a braking stand allowing training of cyclists in gymnasium or in domestic rooms.
  • the braking assembly of the invention may be fixed to the bicycle frame so as to obtain braking of the driving wheel when the bicycle is running on the road.
  • the braking assembly of the invention advantageously shows a quieter operation and reduces tyre wear in view of the elastic contact between tyre and belt.
  • the braking assembly of the invention is also more reliable than the braking assemblies of known type as it comprises a lower number of components.
  • the braking assembly of the invention has also a less expensive construction and requires less maintenance in respect of the braking assemblies of equivalent known type.
  • the braking assembly of the invention shown in FIG. 1 is generally indicated with reference number 1 .
  • the braking assembly is constrained to a support structure comprising a support stand generally indicated with reference number 2 for a bicycle B .
  • the braking assembly 1 together with the support stand 2 constitutes therefore a static braking stand for the bicycle B , where the braking assembly generates a resisting torque opposing the rotation that the cyclist gives to the driving wheel R actuating the pedals P .
  • the braking means 3 comprise a flexible belt 4 with a mainly longitudinal development arranged with a perimetral adherence to tyre C of the driving wheel R for at least a portion of its circumference and wound as a closed loop between a couple of revolving rollers 5, 6 one of which, more particularly the first revolving roller 5, is operatively connected to energy dissipation means generally indicated with reference number 7.
  • the revolving rollers 5, 6 are part of a rigid frame generally indicated with 8 that can be seen also in FIG. 4, and define a couple of longitudinal rotation axes 5b, 6b parallel to one another.
  • the rigid frame 8 is supported by a support bracket generally indicated with 9 and steadily fixed to stand 2, to which the rigid frame 8 is connected through adjustment means generally indicated with 10 adapted to change the position in respect of the driving wheel R .
  • Proper blocking means 11 are fixing the rigid frame 8 in the desired position.
  • the rigid frame 8 comprises a couple of side members 8a, 8b parallel to one another that are rigidly connected through a couple of fixed pins 12, 13, each of them being the pivot pin of a corresponding roller 5, 6 with the intermediate arrangement of rolling bearings 12a, 12b and 13a, 13b respectively.
  • first roller 5 has an outer surface provided with grooves 5a cooperating with corresponding grooves 4a made on the inner surface of the flexible belt 4 while the second roller 6 has an outer smooth surface.
  • the first roller 5 is connected to energy dissipation means generally indicated with reference number 7 comprising a disc 14 preferably made of amagnetic material for instance aluminum, fixedly keyed to the first roller through a fly wheel 15 and a cooling fan 16 which is arranged between a couple of magnetic pieces 17a, 17b supported by a moveable fork 18 sliding along guide means 19 of a case 20 fixed to the rigid frame 8.
  • energy dissipation means generally indicated with reference number 7 comprising a disc 14 preferably made of amagnetic material for instance aluminum, fixedly keyed to the first roller through a fly wheel 15 and a cooling fan 16 which is arranged between a couple of magnetic pieces 17a, 17b supported by a moveable fork 18 sliding along guide means 19 of a case 20 fixed to the rigid frame 8.
  • More particularly case 20 has a protective function as it is so shaped as to contain disc 14, fly wheel 15, fan 16 and fork 18 as shown in FIG. 3.
  • Fork 18 may slide longitudinally along the guide means 19 in both directions of arrow 21 being connected to actuating means 22 comprising a flexible metal wire 22a tensioned by an operating lever 22b fixed to the bicycle handlebar.
  • said means comprise a couple of screws 24, 25, each of them being integral with a corresponding half bracket 26, 27 and being coupled to a nut-screw 29, 30 fixed to the rigid frame 8 at a corresponding side member 8a, 8b.
  • Each screw 24, 25 is arranged in through holes 8c, 8d made in each corresponding side member 8a, 8b and is provided at one end with a control hand-wheel 24a, 25a.
  • said means comprise a couple of screws 31, 32 each protruding from the corresponding side member 8a, 8b of the rigid frame 8 and threaded in a corresponding slit 33, 34 shown in FIGS. 2 and 3 and made in each half-bracket 26, 27 which is fixed through a nut-screw 35, 36 preferably made in a control handle 35a, 36a.
  • Locking is obtained by lock-nuts 37, 38.
  • the position of the rigid frame 8 is adjusted by acting on the adjustment means 10 so as to cause the flexible belt 4 to adhere to tyre C of the driving wheel R.
  • the cyclist starts pedalling and actuating the lever 23 causes the fork 18 to slide arranging it in any position comprised between the two end positions shown with continuous line and dashed line in FIG. 3 according to the desired resisting force.
  • the magnetic pieces 17a, 17b carry out a magnetic effect induced on the aluminum disc 14 braking the first roller 5 and therefore the belt 4 in proportion to the opposite surface areas of the magnetic pieces and the aluminum disc.
  • FIG. 6 A different application of the braking assembly 1 of the invention is shown in FIG. 6 where the assembly is constrained to the back fork F of the frame of the bicycle B that in this case constitutes the support structure.
  • the cyclist may perform a dynamic training running with the bicycle on the road.
  • the braking assembly of the invention in both embodiments in which it is connected either to the stand supporting the bicycle B or to the back fork F of the bicycle frame, can be easily adjusted so as to regulate in an optimal way the adherence of the belt to the surface of the tyre of the driving wheel.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biophysics (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Braking Arrangements (AREA)
  • Motorcycle And Bicycle Frame (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Steering Devices For Bicycles And Motorcycles (AREA)
  • Automatic Cycles, And Cycles In General (AREA)

Claims (14)

  1. Un groupe de freinage (1) pour vélos (B) particulièrement indiqué pour l'entraínement des cyclistes, fixé à une structure de support (2; F) et équipé de moyens de freinage (3) intéragissant avec la roue d'entraínement (R) dudit vélo (B) pour générer un couple résistant opposé à la rotation appliquée par le cycliste à ladite roue d'entraínement (R) au moyen des pédales (P), lesdits moyens de freinage (3) comprenant au moins une courroie flexible (4) avec un développement principalement longitudinal positionnée avec une adhérence périmetrale au pneu (C) de ladite roue d'entraínement (R) pour au moins une partie de sa circonférence et enroulée comme une boucle fermée entre au moins une paire de rouleaux pivotants (5, 6), au moins un desdits rouleaux étant relié d'une manière opérative à des moyens de dissipation d'énergie (7), ladite paire de rouleaux pivotants (5, 6) faisant partie d'un cadre rigide (8) supporté par une bride de support (9) fixée à ladite structure de support (2; F), ladite paire de rouleaux pivotants comprenant un premier rouleau (5) relié d'une manière opérative auxdits moyens de dissipation d'énergie (7) et un deuxième rouleau (6), ladite courroie flexible (4) étant enroulée entre lesdits rouleaux, lesdits rouleaux (5, 6) ayant des axes de rotation essentiellement horizontaux et parallèles (5b, 6b), ledit cadre rigide (8) étant relié à ladite bride de support (9) au travers de moyens de réglage (10) indiqués pour changer sa position par rapport audit pneu (C) de ladite roue d'entraínement (R), caractérisé en ce que lesdits moyens de dissipation d'énergie (7) comprennent un disque (14) de matériel amagnétique claveté d'une manière fixe sur ledit premier rouleau (5) avec la surface positionnée entre une paire de pièces magnétiques (17a, 17b) soutenues par une fourche mobile (18) incorporée dans ledit cadre rigide (8) et reliées à des moyens d'actionnement (22) indiqués pour déplacer lesdites pièces magnétiques (17a, 17b) par rapport audit disque (14).
  2. Le groupe de freinage (1) selon la revendication 1) caractérisé en ce que ledit disque amagnétique (14) est relié audit premier rouleau (5) au moyen d'un volant (15) avec ventilateur de refroidissement (16), tous les deux étant coaxiaux avec ledit premier rouleau (5).
  3. Le groupe de freinage (1) selon la revendication 1) caractérisé en ce que ledit disque de matériel amagnétique (14) est positionné à l'intérieur d'un boítier (20) fixé audit cadre rigide (8) et équipé de moyens de guidage (19) pour le coulissement de ladite fourche mobile (18).
  4. Le groupe de freinage (1) selon la revendication 1) caractérisé en ce que lesdits moyens d'actionnement (22) comprennent un fil flexible (22a) fixé d'un bout à ladite fourche mobile (18) et du bout opposé à un levier de commande (22b) soutenu par le guidon dudit vélo (B).
  5. Le groupe de freinage (1) selon la revendication 1) caractérisé en ce que ledit cadre rigide (8) est relié à ladite bride de support (9) également au travers des moyens de blocage (11) indiqués pour fixer ledit cadre dans la position définie par lesdits moyens de réglage (10).
  6. Le groupe de freinage (1) selon la revendication 1) caractérisé en ce que lesdits moyens de réglage (10) comprennent au moins une vis (24, 25) avec des moyens de commande (24a, 25a) incorporés dans ladite bride de support (9), ladite vis étant assemblée avec un écrou (29, 30) fixé audit cadre rigide (8).
  7. Le groupe de freinage (1) selon la revendication 1) caractérisé en ce que lesdits moyens de blocage (11) comprennent au moins une vis (31, 32) saillant dudit cadre rigide (8) et filetée dans une fente (33, 34) réalisée dans ladite bride de support (9) à laquelle est fixé un écrou (35, 36) avec une poignée (35a, 36a).
  8. Le groupe de freinage (1) selon la revendication 1) caractérisé en ce que ledit premier rouleau (5) sur sa surface extérieure présente des rainures (5a) intéragissant avec des rainures correspondantes (4a) réalisées sur la surface intérieure de ladite courroie flexible (4).
  9. Le groupe de freinage (1) selon la revendication 1) caractérisé en ce que lesdits rouleaux pivotants (5, 6) ont les axes de rotation correspondants (5b, 6b) positionnés à la même distance (d) du moyeu de ladite roue d'entraínement (R) pour une position quelconque où ledit cadre (8) met la courroie en strict contact avec ledit pneu (C).
  10. Le groupe de freinage (1) selon la revendication 1) caractérisé en ce que ledit cadre rigide (8) comprend une paire d'éléments latéraux parallèles (8a, 8b) reliés d'une manière rigide l'un à l'autre au moyen d'une paire de pivots fixes (12, 13) chacun étant le pivot d'articulation d'un rouleau correspondant (5, 6).
  11. Le groupe de freinage (1) selon la revendication 1) caractérisé en ce que ladite bride de support (9) se compose d'une paire de demi-brides une en face de l'autre (26, 27) entre lesquelles ledit cadre rigide (8) est positionné.
  12. Le groupe de freinage (1) selon la revendication 11) caractérisé en ce que ladite bride de support (9) est fixée à une béquille de support (2) soutenant ledit vélo (B) en le disposant en position verticale fixe avec ladite roue d'entraínement (R) soulevée du sol (T).
  13. Le groupe de freinage (1) selon la revendication 12) caractérisé en ce que ladite béquille de support (2) soutient ledit vélo (B) sur le moyeu (M) de la roue d'entraínement (R).
  14. Le groupe de freinage (1) selon la revendication 1) caractérisé en ce que ladite bride de support (9) est fixée à la fourche arrière (F) du cadre dudit vélo (B).
EP00964568A 1999-10-01 2000-09-29 Unite de freinage pour bicyclettes Expired - Lifetime EP1220706B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
ITVI990202 1999-10-01
IT1999VI000202A IT1307636B1 (it) 1999-10-01 1999-10-01 Gruppo di frenatura per biciclette.
PCT/IB2000/001452 WO2001024885A2 (fr) 1999-10-01 2000-09-29 Unite de freinage pour bicyclettes

Publications (2)

Publication Number Publication Date
EP1220706A1 EP1220706A1 (fr) 2002-07-10
EP1220706B1 true EP1220706B1 (fr) 2003-03-12

Family

ID=11427177

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00964568A Expired - Lifetime EP1220706B1 (fr) 1999-10-01 2000-09-29 Unite de freinage pour bicyclettes

Country Status (7)

Country Link
EP (1) EP1220706B1 (fr)
AT (1) ATE234132T1 (fr)
AU (1) AU763857B2 (fr)
CA (1) CA2385933A1 (fr)
DE (1) DE60001674D1 (fr)
IT (1) IT1307636B1 (fr)
WO (1) WO2001024885A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006016824B3 (de) * 2006-04-07 2007-10-11 Giant Mfg. Co., Ltd. Fahrrad mit Antriebsbremsvorrichtung zum Erschweren des Tretens

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1014610C1 (nl) * 2000-03-10 2001-09-11 Tech Ind Tacx B V Hometrainer.
GB2389542A (en) * 2002-05-14 2003-12-17 Glyn David Rosser Combination bicycle and exercise bicycle
CH706276A1 (de) * 2012-03-27 2013-09-30 Simon Ruzicka Fahrzeugrad.
TWI556858B (zh) * 2012-04-19 2016-11-11 沃德 傑佛瑞 艾倫 自行車配件及其使用方法
US9486687B2 (en) * 2014-08-22 2016-11-08 SportCrafters, Inc. Self-compensating tire compression trainer

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB475207A (en) * 1936-07-14 1937-11-16 Arthur Henry Kempson Improvements in or relating to exercising machines
BE1003439A6 (fr) * 1989-12-05 1992-03-24 Schumacher Jean Michel Appreil d'exercices physiques avec simulation programmable.
US5382208A (en) * 1994-03-02 1995-01-17 Hu; Hui-Hsin Magnetic-resistance control device for an exercise bicycle
US5916067A (en) * 1996-12-02 1999-06-29 Morasse; Lionel System for converting a bicycle into a bicycle exerciser

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006016824B3 (de) * 2006-04-07 2007-10-11 Giant Mfg. Co., Ltd. Fahrrad mit Antriebsbremsvorrichtung zum Erschweren des Tretens

Also Published As

Publication number Publication date
ATE234132T1 (de) 2003-03-15
ITVI990202A1 (it) 2001-04-01
WO2001024885A3 (fr) 2001-06-07
DE60001674D1 (de) 2003-04-17
IT1307636B1 (it) 2001-11-14
EP1220706A1 (fr) 2002-07-10
WO2001024885A2 (fr) 2001-04-12
CA2385933A1 (fr) 2001-04-12
AU7549000A (en) 2001-05-10
AU763857B2 (en) 2003-07-31

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