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WO2004048188A1 - Dispositif pour manivelle de pedalier - Google Patents

Dispositif pour manivelle de pedalier Download PDF

Info

Publication number
WO2004048188A1
WO2004048188A1 PCT/IT2003/000772 IT0300772W WO2004048188A1 WO 2004048188 A1 WO2004048188 A1 WO 2004048188A1 IT 0300772 W IT0300772 W IT 0300772W WO 2004048188 A1 WO2004048188 A1 WO 2004048188A1
Authority
WO
WIPO (PCT)
Prior art keywords
pedal crank
piston
pedal
hub
axial hole
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.)
Ceased
Application number
PCT/IT2003/000772
Other languages
English (en)
Other versions
WO2004048188A8 (fr
Inventor
Silvio Volpatti
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AU2003288525A priority Critical patent/AU2003288525A1/en
Publication of WO2004048188A1 publication Critical patent/WO2004048188A1/fr
Publication of WO2004048188A8 publication Critical patent/WO2004048188A8/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M3/00—Construction of cranks operated by hand or foot

Definitions

  • the present invention relates to a pedal crank mechanism for bicycles of the folding type, i.e. where the pedals may be folded inside the planes passing through the pedal cranks.
  • the main object of the present invention is that of providing a pedal crank mechanism in which the pedals may be oriented so as to project outside of or inside the plane passing through the pedal crank depending on whether the bicycle is in the operating condition or it is required to stow away substantially the parts which otherwise project from the volume of the frame.
  • Another object of the present invention is that of providing a mechanism of the aforementioned type in which switching over between the two aforementioned positions can be achieved easily, rapidly and without the use of special equipment or tools.
  • a pedal crank mechanism of the type comprising a hub which is rigidly joined to a toothed wheel actuating the main chain for transmission of motive power to the rear wheel, a pair of pedal cranks fixed to the two ends of said hub and a pair of pedals fixed rotatably to an eyelet situated at the ends of said pedal cranks, characterized in that each pedal crank comprises a body, the end of which opposite to that provided with said eyelet is in the shape of a "U", the two arms of which are pivotably mounted on the head of said hub about a pivoting axis perpendicular to the axis of said hub, said body having an axial hole which is blind on the side where said eyelet is situated and open towards the U-shaped end of the pedal crank, a piston which is housed in said axial hole and able to project from said open end of said axial hole, a spring housed in said hole so as to bias said piston towards the position projecting from said hole, a pair of recesses formed in said head of said hub
  • Figs. 1 and 2 are views of the pedal crank mechanism in the two conditions, i.e. operating condition and condition where the pedal is folded towards the inside;
  • Figs. 3 and 4 show cross-sectional views, along the plane indicated by III- III in Fig. 1 and IN-IN in Fig. 3, respectively, of the mechanism for switching the pedal cranks between the two positions shown in Figures- 1 and 2;
  • Figs. 5, 6 and 7 show a variant of the mechanism for switching the pedal cranks, where Figures 6 and 7 are cross-sectional views along the planes indicated by NI-NI in Fig. 7 and NII-NII in Fig. 6, respectively.
  • the pedal mechanism comprises two pedal cranks, i.e. right-hand pedal crank 10D and left-hand pedal crank 10S, at the ends of which provided with the eyelet 14 the pedals 12D and 12S are mounted (D and S referring to rignt-hand and left-hand respectively, even though both the pedal cranks and the pedals are identical to each other).
  • the pedals are mounted on the ends of the hub 16 which is of the conventional type and which has, rigidly fixed thereto, the toothed actuating wheel 20 of the bicycle, while the reference number 18 denotes generally the frame of the bicycle.
  • each pedal crank 10 fixed to the hub 16 is the shape of a "U", the two arms 22 of which are fixed to the hub by means of two bolts 24.
  • the head 26 of the hub has two recesses 28 with a substantially radial progression and arranged in a plane at right angles to that passing through the axis of the two bolts 24.
  • the recesses 28 in both the conditions shown in Figures 1 and 2 are aligned with the longitudinal axis of the pedal crank.
  • the body 30 of the pedal crank has an axial hole 32 which is blind towards the outer end of the pedal crank (i.e. the end with the eyelet 14) and open towards the other end (i.e. the end which is U-shaped) and inside which a piston 34 is seated, the outer end or tip 36 of which is shaped so as to match the recesses 28.
  • a spring 38 is housed between the piston 34 and the blind end of the hole 32 against which it bears and biases the piston 34 so as to project from the axial hole 32.
  • a transverse pin 40 is integral with the body of the piston 34 and has two ends which project outside the body 30 of the pedal crank through two longitudinally opposite slots 42 which limit the stroke of the piston 34 and also the amount by which its tip 36 projects from the axial hole.
  • each end of the pin 40 is preferably integral with a shding block or plug which helps facilitate operation of the pin.
  • the pedal crank mechanism is then locked in the new condition which is that shown in Fig. 2, with the pedals 12 projecting towards the inside relative to the plane passing through each pedal crank.
  • Figures 5-7 show a constructional variant in which operation of the piston 34 has been modified.
  • the axial hole 32 has a step 44 against which the bottom end of the spring 38 bears, while the rear end of the piston 34 is pivotably mounted, about the pin 46, on the end of a hinged connecting plate 48, the other end of which is pivotably mounted, about the pin 50, on an operating lever 52 which is pivotably mounted on the body 30 about a pin 54 and which has its outer end 56 shaped so as to facilitate gripping and operation of the lever itself.
  • the body 30 of the pedal crank has two longitudinal facing slits 58 through which the lever 52 and plate 48 may project relative to the body 30.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)
  • Steering Devices For Bicycles And Motorcycles (AREA)
  • Mechanical Control Devices (AREA)

Abstract

L'invention concerne un mécanisme pour manivelle de pédalier de bicyclette. Chaque manivelle de pédalier (10D, 105) est montée sur un moyeu (16) de la bicyclette de façon à pouvoir effectuer une rotation de 180° entre deux positions dans lesquelles les pédales fixées aux extrémités du pédalier sont respectivement dirigées vers l'extérieur et vers l'intérieur, relativement au plan vertical traversant chaque manivelle de pédalier (10D, 105).
PCT/IT2003/000772 2002-11-26 2003-11-25 Dispositif pour manivelle de pedalier Ceased WO2004048188A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003288525A AU2003288525A1 (en) 2002-11-26 2003-11-25 Pedal crank device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI20022502 ITMI20022502A1 (it) 2002-11-26 2002-11-26 Meccanismo a pedivelle.
ITMI2002A002502 2002-11-26

Publications (2)

Publication Number Publication Date
WO2004048188A1 true WO2004048188A1 (fr) 2004-06-10
WO2004048188A8 WO2004048188A8 (fr) 2005-03-03

Family

ID=32375540

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT2003/000772 Ceased WO2004048188A1 (fr) 2002-11-26 2003-11-25 Dispositif pour manivelle de pedalier

Country Status (3)

Country Link
AU (1) AU2003288525A1 (fr)
IT (1) ITMI20022502A1 (fr)
WO (1) WO2004048188A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010043077A1 (fr) * 2008-10-15 2010-04-22 Liang Manchao Pédalier rotatif pour vélo
CN102145728A (zh) * 2010-02-04 2011-08-10 廉东换 自行车的曲臂位置调节装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE64643C (de) * F. WESTWOOD in Birmingham, t Lombardstreet Kurbel für Fahrräder und dergl. mit aufgeschlitztem Auge und flachem scheibenförmigen Keil
GB578385A (en) * 1943-08-14 1946-06-26 Frank Wagner Schwinn Folding cranks for bicycles
NL6401632A (fr) * 1964-02-21 1965-08-23
FR2219051A2 (fr) * 1973-02-22 1974-09-20 Rouget Jean Claude
US4201120A (en) * 1977-02-05 1980-05-06 Shimano Industrial Company Limited Gear crank for bicycles
DE20114115U1 (de) * 2001-08-27 2001-12-06 Unckrich, Volker, Dipl.-Ing., 67307 Göllheim Umklappbare Pedalkurbel

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE64643C (de) * F. WESTWOOD in Birmingham, t Lombardstreet Kurbel für Fahrräder und dergl. mit aufgeschlitztem Auge und flachem scheibenförmigen Keil
GB578385A (en) * 1943-08-14 1946-06-26 Frank Wagner Schwinn Folding cranks for bicycles
NL6401632A (fr) * 1964-02-21 1965-08-23
FR2219051A2 (fr) * 1973-02-22 1974-09-20 Rouget Jean Claude
US4201120A (en) * 1977-02-05 1980-05-06 Shimano Industrial Company Limited Gear crank for bicycles
DE20114115U1 (de) * 2001-08-27 2001-12-06 Unckrich, Volker, Dipl.-Ing., 67307 Göllheim Umklappbare Pedalkurbel

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010043077A1 (fr) * 2008-10-15 2010-04-22 Liang Manchao Pédalier rotatif pour vélo
CN102145728A (zh) * 2010-02-04 2011-08-10 廉东换 自行车的曲臂位置调节装置
WO2011096633A3 (fr) * 2010-02-04 2011-11-03 에스에스오토엔지니어링(주) Dispositif de commande de position d'une manivelle de bicyclette

Also Published As

Publication number Publication date
AU2003288525A1 (en) 2004-06-18
WO2004048188A8 (fr) 2005-03-03
ITMI20022502A1 (it) 2004-05-27

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