WO2023235914A1 - Pédalier pour bicyclette - Google Patents

Pédalier pour bicyclette Download PDF

Info

Publication number
WO2023235914A1
WO2023235914A1 PCT/AU2023/050484 AU2023050484W WO2023235914A1 WO 2023235914 A1 WO2023235914 A1 WO 2023235914A1 AU 2023050484 W AU2023050484 W AU 2023050484W WO 2023235914 A1 WO2023235914 A1 WO 2023235914A1
Authority
WO
WIPO (PCT)
Prior art keywords
crank
gear
shaft
coupling
drive
Prior art date
Application number
PCT/AU2023/050484
Other languages
English (en)
Inventor
Angus Ruston BENNETT
Original Assignee
Bennett Angus Ruston
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
Priority claimed from AU2022901544A external-priority patent/AU2022901544A0/en
Application filed by Bennett Angus Ruston filed Critical Bennett Angus Ruston
Publication of WO2023235914A1 publication Critical patent/WO2023235914A1/fr

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
    • B62M1/00—Rider propulsion of wheeled vehicles
    • B62M1/24—Rider propulsion of wheeled vehicles with reciprocating levers, e.g. foot levers
    • B62M1/30—Rider propulsion of wheeled vehicles with reciprocating levers, e.g. foot levers characterised by the use of intermediate gears
    • 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
    • B62M1/00—Rider propulsion of wheeled vehicles
    • B62M1/24—Rider propulsion of wheeled vehicles with reciprocating levers, e.g. foot levers
    • 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
    • B62M1/00—Rider propulsion of wheeled vehicles
    • B62M1/36—Rider propulsion of wheeled vehicles with rotary cranks, e.g. with pedal cranks
    • 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
    • B62M11/00—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels
    • B62M11/04—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels of changeable ratio
    • B62M11/10—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels of changeable ratio with bevel gear wheels

Definitions

  • the invention relates to a pedal assembly for a bicycle or other human powered apparatus.
  • the invention relates to a pedal assembly with reciprocating pedals and a drive arrangement to allow a rider to propel a bicycle or other human powered apparatus via the reciprocating pedals.
  • Bicycles or other human powered apparatuses may typically be powered or propelled by a rider rotating pedals supported by cranks.
  • the rotary movement of the pedals is translated to the wheels, usually the rear wheel, via a drive arrangement typically including a chain and one or more gears or cogs.
  • the first coupling is adapted to extend around the drive gear between the first crank and the first gear.
  • the first coupling includes a linkage with a first section arranged parallel to the first crank and a second section arranged to extend between the first section and the first crank to provide a space to accommodate the drive gear.
  • the second coupling includes a linkage arranged to extend between second crank and the second gear.
  • crank shaft is one part or multi -part.
  • crank shaft rotates independently of each of the first, the second and the third gears.
  • the drive gear is directly coupled to the crank shaft for likewise rotation.
  • a drive assembly for a bicycle having a frame with a crank shaft
  • the drive assembly including: a first crank having a first end supporting a first pedal and a second end coupled to the crank shaft via a first one-way device; a second crank having a first end supporting a second pedal and a second end coupled to the crank shaft via a second one-way device; a first bevel gear rotatably coupled to the crank shaft between the first crank and the frame, a second bevel gear rotatably coupled to the crank shaft between the second crank and the frame, and a third bevel gear rotatably coupled between the first bevel gear and the second bevel gear to translate motion between the first bevel gear and the second bevel gear; a drive gear coupled to the crank shaft between the first crank and the first bevel gear; and a first coupling between the first crank and the first bevel gear arranged to transfer movement between the first crank and the first bevel gear, and a second coupling between the second crank and
  • a drive assembly for a human powered apparatus including: a first crank having a first end supporting a first actuator and a second end coupled to a shaft of the human powered apparatus via a first one-way device; a second crank having a first end supporting a second actuator and a second end coupled to the shaft via a second one-way device; a first gear rotatably coupled to the shaft between the first crank and the frame, a second gear rotatably coupled to the shaft between the second crank and the frame, and a third gear rotatably coupled between the first gear and the second gear to translate motion between the first gear and the second gear; a drive gear coupled to the shaft between the first crank and the first gear; and a first coupling between the first crank and the first gear arranged to transfer movement between the first crank and the first gear about the drive gear, and a second coupling between the second crank and the second gear arranged to transfer likewise movement between the second crank and the second gear such that the first crank and
  • a method of fitting a reciprocating pedal assembly to a bicycle frame having a crank shaft including: Rotatably coupling a first bevel gear to a first side of the crank shaft, rotatably coupling a second bevel gear to a second side of the crank shaft, and a rotatably coupling a third bevel gear between the first and second bevel gears; Rotatably coupling a drive gear to the first side of the crank shaft and coupling a first crank with a first pedal to the first side of the crank shaft with a first one-way device such that the drive gear is located between the first crank and the bicycle frame; Coupling a second crank with a second pedal to the second side of the crank shaft with a second one-way device; and Coupling the first crank to the first bevel gear around the drive gear, and coupling the second crank to the second bevel gear such that the first crank and the second crank are moveable in a reciprocal motion to effect rotational motion of
  • Figure l is a side view illustrating a bicycle with a reciprocal pedal assembly
  • Figure 2 is a top view illustrating the bicycle with the reciprocal pedal assembly
  • Figure 3 is a cutaway top view illustrating the bicycle with the reciprocal pedal assembly
  • Figure 4 is a cutaway front view illustrating the bicycle with the reciprocal pedal assembly.
  • Figure 5 is a perspective exploded parts view illustrating a bicycle frame with the reciprocal pedal assembly.
  • FIG. 1 to 5 there is shown a pedal or drive assembly 10 for a human powered apparatus 11 that in this example is provided in the form of a bicycle 12.
  • the bicycle 12 including a seat 13, wheels 14, a handlebar 15 and a frame 16 that supports a rotatable crank shaft 18 via its bottom bracket 21.
  • the crank shaft 18 may be one piece or multi-part.
  • the pedal or drive assembly 10 may find other uses such as in three or four wheeled human powered vehicles or the like in which a user actuates pedals, or perhaps handles, of the drive assembly 10 via one or both of their hands or feet.
  • Other human powered apparatuses may also include aquatic craft such as paddle boats.
  • the assembly 10 includes an actuation arrangement 13, movable by the feet or hands for a user, including a first crank 20 having a first end 22 supporting a first actuator or pedal 24, and a second end 26 coupled to the crank shaft 18 via a first one-way device 28 that may be a one-way clutch or the like, and a second crank 30 having a first end 32 supporting a second actuator or pedal 34, and a second end 36 coupled to the crank shaft 18 via a second one-way device 38 such as a one-way clutch.
  • actuation arrangement 13 movable by the feet or hands for a user, including a first crank 20 having a first end 22 supporting a first actuator or pedal 24, and a second end 26 coupled to the crank shaft 18 via a first one-way device 28 that may be a one-way clutch or the like, and a second crank 30 having a first end 32 supporting a second actuator or pedal 34, and a second end 36 coupled to the crank shaft 18 via a second one-way device 38 such as a one-way clutch.
  • cranks 20, 30 The arrangement enables motion of the cranks 20, 30 to be transferred to the crank shaft 18 on the down stroke movement of the cranks 20, 30 via the one-way devices 28, 38 to effect rotation of the crank shaft 18.
  • the pedals 24, 34, and associated cranks 20, 30, thereby move in an up-and-down reciprocal motion, and are leading or in front of crank shaft 18.
  • the assembly 10 further includes a first gear 40, that may be a bevel gear, rotatably coupled to the crank shaft 18 between the first crank 20 and the frame 16, a second gear 42, that may also be a bevel gear, rotatably coupled to the crank shaft 18 between the second crank 30 and the frame 16, and a third gear 44, that may also be a bevel gear, rotatably coupled between the first gear 40 and the second gear 42 to translate motion between the first gear 40 and the second gear 42.
  • a first gear 40 that may be a bevel gear
  • second gear 42 that may also be a bevel gear
  • a third gear 44 that may also be a bevel gear
  • Each of the gears 40, 42, 44 are mounted on respective bearings 46, 48, 50 and the third gear 44 is mounted on a mounting shaft 52 that extends from the frame 16 perpendicular to the crank shaft 18.
  • the arrangement of the gears 40, 42, 44 allow one of the cranks 20, 30 to move downward whilst the other crank 20, 30 is raised thereby creating the reciprocal motion with the pedals 24, 34.
  • the assembly 10 further includes a drive gear 54 which drives a rear wheel gear 55 via a chain 57.
  • the drive gear 54 may be a single gear or multi-gears. It is also possible the rear wheel gear 55 may be multi-geared or be otherwise adapted to facilitate gear rations between the drive gear 55 and the rear wheel gear 55.
  • the drive gear 54 is coupled to the crank shaft 18 between the first crank 20 and the first gear 40. Accordingly, rotation of the crank shaft 18 by the reciprocal motion of the cranks 20, 30 - rotates the drive gear 54.
  • gears 40, 42, 44, and drive gear 54 may also be provided in mechanically equivalent forms such as belt drives or couplings, fluid drives or couples or magnetic belt drives or couplings.
  • gears 40, 42, 44, and drive gear 54 may also be provided in mechanically equivalent forms such as belt drives or couplings, fluid drives or couples or magnetic belt drives or couplings.
  • the term “gear” herein should be given a broad interpretation in relation to its function in relation to the transfer of movement and the direction of movement.
  • a first coupling in the form of a linkage or bracket 56 between the first crank 20 and the first gear 40 is arranged to transfer movement likewise between the first crank 20 and the first gear 40 about or around the drive gear 54
  • a second coupling, in the form of a further linkage or bracket 58 between the second crank 30 and the second gear 42 arranged to transfer likewise movement between the second crank 30 and the second gear 42.
  • the linkage or bracket 56 may take various forms and may include a first section 41 that extends parallel of the first crank 20 and a second section 43 that pivotally connects the first section 41 to the first crank 20.
  • the second section 43 passes about or around the drive gear 54, and the length of the second section 43 provides a space 45 to accommodate with drive gear 54.
  • the further linkage orbracket 58 may be similarly arranged for similarity of parts, but may be smaller as shown in Figure 5. This arrangement allows the first crank 20 and the second crank 30 to be moveable in a reciprocal motion to effect rotational motion of the drive gear 54.
  • bracket 56 being generally L-shaped, allows the drive gear 54 to be positioned relatively inside of the first crank 20 which keeps the chain 57 and drive gear 54 away from a leg of a user and also allows alignment with the rear wheel gear 55 which allows adaptability of the drive assembly 10 to be used with existing components such as being suitable for retro-fitting with an existing bicycle.
  • a method of fitting the reciprocating pedal assembly 12 to a bicycle frame 16 having a crank shaft 18 may include the steps of: rotatably coupling the first bevel gear 40 to a first side 31 of the crank shaft 18, rotatably coupling the second bevel gear 42 to a second side 33 of the crank shaft 18, and a rotatably coupling the third bevel gear 44, such as on the mounting shaft 52, between the first and second bevel gears 40, 42.
  • the mounting shaft 52 may need to be fitted to the frame 16 and may be provide by a bolt or similar. Bearings 46, 48, 50 may also need to be fitted prior to the gears 40, 42, 44.
  • the method may further include: rotatably coupling the drive gear 54 to the first side 31 of the crank shaft 18, and coupling the first crank 20 with the first pedal 24 to the first side 31 of the crank shaft 18 with the first one-way device 28 such that the drive gear 54 is located between the crank 20 and the bicycle frame 18; coupling the second crank 30 with the second pedal 34 to the second side 33 of the crank shaft 18 with the second one-way device 38; and coupling the first crank 20 to the first bevel gear 40 around the drive gear 54, and coupling the second crank 30 to the second bevel gear42 such that the first crank 20 and the second crank 30 are moveable in a reciprocal motion to effect rotational motion of the crank shaft 18 and drive gear 54.
  • Such a method may be used to retrofit the drive assembly 10 to an existing bicycle or manufacture a new bicycle.
  • a pedal or drive assembly for a human powered apparatus in which the pedals and associated cranks move in an up-and-down reciprocal motion with the pedals leading or in front of crank shaft.
  • a user may, for example, need to only push or press down on pedals with one foot at a time to achieve motion, and lift the other foot upwardly at the same time.
  • the drive gear may be positioned to locate the chain and drive gear away from a leg of a user and also allows alignment with the rear wheel gear, or use with multiple gears which allows adaptability of the drive assembly to be used with existing components such as being suitable for retro-fitting with an existing bicycle.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)

Abstract

Un ensemble d'entraînement (10) pour un appareil à alimentation humaine (11) est divulgué et comprend un agencement d'actionnement (13). L'agencement d'actionnement (13) permet un mouvement de va-et-vient vers le haut et vers le bas des pédales (24, 34) et des manivelles associées (20, 30) à transférer à une rotation directionnelle d'un vilebrequin (18) sur le mouvement de course descendante des manivelles (20, 30) par l'intermédiaire de dispositifs unidirectionnels (28, 38) pour effectuer la propulsion de l'appareil alimenté par l'homme (11). Des procédés d'utilisation et d'installation sont également divulgués.
PCT/AU2023/050484 2022-06-06 2023-06-05 Pédalier pour bicyclette WO2023235914A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2022901544A AU2022901544A0 (en) 2022-06-06 Pedal Assembly for a Bicycle
AU2022901544 2022-06-06

Publications (1)

Publication Number Publication Date
WO2023235914A1 true WO2023235914A1 (fr) 2023-12-14

Family

ID=89117197

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2023/050484 WO2023235914A1 (fr) 2022-06-06 2023-06-05 Pédalier pour bicyclette

Country Status (1)

Country Link
WO (1) WO2023235914A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2021235A (en) * 1978-05-17 1979-11-28 Cam Gears Ltd Oscillating transmission mechanisms
WO1981002556A1 (fr) * 1980-03-07 1981-09-17 J Shelly Perfectionnements aux bicyclettes a mouvement de pedalage alternatif
GB2346854A (en) * 1999-02-18 2000-08-23 John Philip Davidson Manually operated power transmission system
GB2407305A (en) * 2003-10-24 2005-04-27 Frederick John Adams Reciprocatory twin lever power transmission system
GB2422359A (en) * 2005-01-25 2006-07-26 David Peter Singleton Reciprocatory power transmission system
KR100943371B1 (ko) * 2009-06-24 2010-02-18 김익환 진자운동에 의한 자전거의 구동장치
ITRM20110695A1 (it) * 2011-12-29 2013-06-30 Gianni Cilli Dispositivo atto a massimizzare l'efficacia dell'utilizzo della forza muscolare, in particolare per biciclette, carrozzelle per disabili e simili

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2021235A (en) * 1978-05-17 1979-11-28 Cam Gears Ltd Oscillating transmission mechanisms
WO1981002556A1 (fr) * 1980-03-07 1981-09-17 J Shelly Perfectionnements aux bicyclettes a mouvement de pedalage alternatif
GB2346854A (en) * 1999-02-18 2000-08-23 John Philip Davidson Manually operated power transmission system
GB2407305A (en) * 2003-10-24 2005-04-27 Frederick John Adams Reciprocatory twin lever power transmission system
GB2422359A (en) * 2005-01-25 2006-07-26 David Peter Singleton Reciprocatory power transmission system
KR100943371B1 (ko) * 2009-06-24 2010-02-18 김익환 진자운동에 의한 자전거의 구동장치
ITRM20110695A1 (it) * 2011-12-29 2013-06-30 Gianni Cilli Dispositivo atto a massimizzare l'efficacia dell'utilizzo della forza muscolare, in particolare per biciclette, carrozzelle per disabili e simili

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