EP1220706B1 - Fahrradbremseinheit - Google Patents

Fahrradbremseinheit 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
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English (en)
French (fr)
Other versions
EP1220706A1 (de
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
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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/de
Application granted granted Critical
Publication of EP1220706B1 publication Critical patent/EP1220706B1/de
Anticipated expiration legal-status Critical
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)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biophysics (AREA)
  • Orthopedic Medicine & Surgery (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. Ein Bremskomplex (1) für Fahrräder (B), besonders geeignet zum Training von Radfahrern, an einer Tragstruktur (2, F) fixiert und mit Bremsmitteln (3) versehen, die mit dem Antriebsrad (R) des Fahrrads (B) zusammenwirken, um ein Widerstands-Drehmoment zu erzeugen, das der Drehung entgegenwirkt, in welche der Fahrer das Antriebsrad (R) über die Pedale (P) versetzt, wobei diese Bremsmittel (3) wenigstens einen flexiblen Riemen (4) umfassen, der sich im Wesentlichen in Längsrichtung erstreckt, perimetral über wenigstens einen Teil seines Umfangs am Reifen (C) des Antriebsrads (R) anhaftet und als geschlossene Schleife zwischen wenigstens einem Paar drehender Walzen (5,6) gewunden ist, wobei wenigstens eine dieser Walzen funktional mit einem Energieverzehrer (7) verbunden ist und das Paar drehender Walzen (5,6) Teil eines starren Rahmens (8) ist, der durch einen Stützbügel (9) gehalten wird, welcher an der Tragstruktur (2, F) befestigt ist, wobei das Paar drehender Walzen eine erste Walze (5) umfasst, die funktional mit einem Energieverzehrer (7) verbunden ist, und eine zweite Walze (6), wobei der flexible Riemen (4) zwischen den Walzen gewunden ist, wobei die Walzen (5, 6) im Wesentlichen waagerechte und parallele Drehachsen (5b, 6b) aufweisen und der starre Rahmen (8) am Stützbügel (9) befestigt ist mittels einer Reguliervorrichtung (10), die geeignet ist, seine Position bezüglich des Reifens (C) des Antriebsrads (R) zu verändern, dadurch gekennzeichnet, dass der Energieverzehrer (7) eine Scheibe (14) aus unmagnetischem Material umfasst, die fest an der ersten Walze (5) verkeilt ist mit der Oberfläche zwischen einem Paar magnetischer Teile (17a, 17b), das durch eine zum starren Rahmen (8) gehörende, bewegliche Gabel (18) gehalten wird und mit einem Schaltmittel (22) verbunden ist, das die magnetischen Teile (17a, 17b) bezüglich der Scheibe (14) zu bewegen vermag.
  2. Der Bremskomplex (1) gemäß Patentanspruch 1), dadurch gekennzeichnet, dass die unmagnetische Scheibe (14) über ein Schwungrad (15) mit Kühlventilator (16) an der ersten Walze (5) befestigt ist, und beide zur ersten Walze (5) koaxial stehen.
  3. Der Bremskomplex (1) gemäß Patentanspruch 1), dadurch gekennzeichnet, dass die Scheibe aus unmagnetischem Material (14) in einem Gehäuse (20) positioniert ist, welches am starren Rahmen (8) befestigt ist und über Führungsmittel (19) zum Verschieben der beweglichen Gabel (18) verfügt.
  4. Der Bremskomplex (1) gemäß Patentanspruch 1), dadurch gekennzeichnet, dass das Schaltmittel (22) einen flexiblen Draht (22a) umfasst, der an einem Ende an der beweglichen Gabel (18) befestigt ist und am anderen Ende an einem Steuerhebel (22b), der durch die Lenkstange des Fahrrads (B) gehalten wird.
  5. Der Bremskomplex (1) gemäß Patentanspruch 1), dadurch gekennzeichnet, dass der starre Rahmen (8) auch über eine Blockiervorrichtung (11) mit dem Stützbügel (9) verbunden ist, welche den Rahmen in der mit der Reguliervorrichtung (10) eingestellten Position befestigt.
  6. Der Bremskomplex (1) gemäß Patentanspruch 1), dadurch gekennzeichnet, dass die Reguliervorrichtung (10) wenigstens eine Schraube (24, 25) mit Kontrollvorrichtungen (24a, 25a) umfasst, die zum Stützbügel (9) gehören, wobei diese Schraube mit einer Mutterschraube (29, 30) zusammenpasst, die am starren Rahmen (8) befestigt ist.
  7. Der Bremskomplex (1) gemäß Patentanspruch 5), dadurch gekennzeichnet, dass die Blockiervorrichtung (11) wenigstens eine Schraube (31, 32) umfasst, die aus dem starren Rahmen (8) ragt und in einen Schlitz (33, 34) im Stützbügel (9) eingefügt ist, an dem sie über eine Mutterschraube (35, 36) mit Griff (35a, 36a) befestigt ist
  8. Der Bremskomplex (1) gemäß Patentanspruch 1), dadurch gekennzeichnet, dass die erste Walze (5) an ihrer Außenfläche Rillen (5a) aufweist, die mit entsprechenden Rillen (4a) an der Innenfläche des flexiblen Riemens (4) zusammenwirken.
  9. Der Bremskomplex (1) gemäß Patentanspruch 1), dadurch gekennzeichnet, dass die drehenden Walzen (5, 6) in jeglicher Position, in welcher der Rahmen (8) den am Reifen (C) anliegenden flexiblen Riemen (4) positioniert, ihre Drehachsen (5b, 6b) in gleichem Abstand (d) von der Nabe des Antriebsrads (R) haben.
  10. Der Bremskomplex (1) gemäß Patentanspruch 1), dadurch gekennzeichnet, dass der starre Rahmen (8) ein Paar paralleler Seitenelemente (8a, 8b) aufweist, die starr miteinander verbunden sind durch ein Paar fester Stifte (12, 13), die jeweils den Drehzapfen einer entsprechenden Walze (5, 6) bilden.
  11. Der Bremskomplex (1) gemäß Patentanspruch 1), dadurch gekennzeichnet, dass der Stützbügel (9) aus einem Paar einander zugewandter Halbbügel (26, 27) besteht, zwischen denen der starre Rahmen (8) angeordnet ist.
  12. Der Bremskomplex (1) gemäß Patentanspruch 11), dadurch gekennzeichnet, dass der Stützbügel (9) an einem Halteständer (2) des Fahrrads (B) befestigt ist, welcher es mit vom Boden (T) angehobenem Antriebsrad (R) in einer festen, senkrechten Position positioniert.
  13. Der Bremskomplex (1) gemäß Patentanspruch 12), dadurch gekennzeichnet, dass der Halteständer (2) das Fahrrad (B) an der Nabe (M) des Antriebsrads (R) abstützt.
  14. Der Bremskomplex (1) gemäß Patentanspruch 11), dadurch gekennzeichnet, dass der Stützbügel (9) an der Hintergabel (F) des Rahmens des Fahrrads (B) befestigt ist.
EP00964568A 1999-10-01 2000-09-29 Fahrradbremseinheit Expired - Lifetime EP1220706B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
IT1999VI000202A IT1307636B1 (it) 1999-10-01 1999-10-01 Gruppo di frenatura per biciclette.
ITVI990202 1999-10-01
PCT/IB2000/001452 WO2001024885A2 (en) 1999-10-01 2000-09-29 Braking unit for bicycles

Publications (2)

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

Family

ID=11427177

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00964568A Expired - Lifetime EP1220706B1 (de) 1999-10-01 2000-09-29 Fahrradbremseinheit

Country Status (7)

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

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 (6)

* 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
RU2412852C1 (ru) * 2009-10-05 2011-02-27 Владимир Степанович Григорчук Транспортное средство
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
AU7549000A (en) 2001-05-10
ITVI990202A1 (it) 2001-04-01
IT1307636B1 (it) 2001-11-14
CA2385933A1 (en) 2001-04-12
WO2001024885A3 (en) 2001-06-07
WO2001024885A2 (en) 2001-04-12
DE60001674D1 (de) 2003-04-17
ATE234132T1 (de) 2003-03-15
EP1220706A1 (de) 2002-07-10
AU763857B2 (en) 2003-07-31

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