WO2016186584A1 - Mécanisme de manivelle pour entraînement de bicyclette - Google Patents

Mécanisme de manivelle pour entraînement de bicyclette Download PDF

Info

Publication number
WO2016186584A1
WO2016186584A1 PCT/SK2016/050006 SK2016050006W WO2016186584A1 WO 2016186584 A1 WO2016186584 A1 WO 2016186584A1 SK 2016050006 W SK2016050006 W SK 2016050006W WO 2016186584 A1 WO2016186584 A1 WO 2016186584A1
Authority
WO
WIPO (PCT)
Prior art keywords
cranks
shaft
cyclist
rotation
crank
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/SK2016/050006
Other languages
English (en)
Inventor
František PALDAN
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
Publication of WO2016186584A1 publication Critical patent/WO2016186584A1/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
    • B62M3/003—Combination of crank axles and bearings housed in the bottom bracket
    • 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

Definitions

  • the proposed solution is related to the design of the crank mechanism used mainly for bicycle drives.
  • New invention will make more efficient the utilization of cyclist's force action for the bicycle driving.
  • the arm of force is defined as the distance between the force vector and the axis of the cranks rotation. As soon as the direction of the force acting on the pedal is passing throughout the axis of the cranks rotation, the moment of force is equal to zero because the arm of force is equal to zero. The maximum arm of force value is reached as soon as the direction of the force acting on the pedal is perpendicular to the crank; then, the arm of force is equal to the crank length. The cyclist's physiology restrains the cranks length. Due to the human body anatomic structure, a sitting cyclist is able to act on the pedal with the maximum force whenever his leg is approaching the stretched knee position. However, in case of traditional crank mechanisms, the sitting cyclist has the leg in knee stretched when the crank position is next to the position with zero arm of force.
  • This solution eliminates the above-mentioned disadvantages.
  • This solution consists in the utilization of an alternate swinging movement of the cranks for the generation of the driving sprocket rotation for the bicycle drive.
  • a shaft able to rotate with centrically fixed driving sprocket is placed in the bicycle frame.
  • Cranks are placed in both ends of the shaft through freewheels, which allow separate rotation of the cranks and ensuring of the torque transfer from the cranks to the shaft and driving sprocket only in one direction of the cranks rotation as well as free rotation of the cranks at the backward movement.
  • the cranks can be used not only by the mean of traditional rotation, but also with mutually opposite swinging around the shaft axis within any rotation angle, mainly in the area with maximum arm of force, i.e., in the area next to the position where the direction of the cyclist's force acting on the pedals is perpendicular to the cranks.
  • an adverse effect of the crank dead angle is eliminated, thus enabling the use of gear for higher speed than in case of traditional drive.
  • This advantage of the proposed solution becomes evident at greater loading such as, e.g., the uphill riding.
  • pedals For backward rotation of the cranks, the connection of pedals with the cyclist's track shoes is necessary.
  • pedals can be coupled, e.g., by a drag rope placed throughout a pulley, in order to make easier the coordination of the cyclist's movements.
  • the cranks coupling should ensure the counter-rotation of the second crank when the cyclist is rotating the first crank.
  • longer cranks might be used, thereby increasing the crank torque; moreover, the connection of pedals with the cyclist's track shoes is not necessary.
  • the bicycle drive design based solely on the cranks swinging movement there is the maximum action of the cyclist's force in those areas of crank position where the arm of force is high and the useful torque is significantly greater than in traditional design.
  • Fig. 1 shows the mechanism for either rotating or swinging movement of the cranks situated at the ends of the shaft on one-direction bearings.
  • Fig. 2 shows the mechanism for either rotating or swinging movement of the cranks placed throughout a freewheel situated inside the shaft hollow.
  • Fig. 3 shows the cranks coupling for a drive based solely on the swinging movement of the cranks.
  • the bicycle cranks layout according to Fig. 1 allows both traditional drive by the mean of rotation of the cranks mutually placed under 1 80° as well as the drive based on alternating swinging movement of the cranks within the area of maximum torque developed by the cyclist's force action on the pedals.
  • the bearing caps 1 1 with built-in antifriction bearings 12 are bolted inside the bicycle frame I .
  • a shaft 2 with quadrangular shouldering for the connection to the driving sprocket 3 is placed.
  • the driving sprocket is equipped with a quadrangular hole matching to the shaft 2 shouldering.
  • An external right-hand thread with a nut 13 bolted thereon is made on the shaft 2 right side.
  • a freewheel 5 inner ring is pressed on the outer cylindrical surface of the nut 1 3.
  • the crank 4 with pedal 6 are pressed on the freewheel 5 outer ring.
  • the nut 1 3 ensures the axial position of the chain sprocket 3 on the shaft 2.
  • An external left-hand thread with a nut 14 bolted thereon is made on the shaft 2 left side.
  • a freewheel 5 inner ring is pressed on the outer cylindrical surface of the nut 14.
  • the crank 4 with pedal 6 are pressed on the freewheel 5 outer ring.
  • one-direction antifriction bearings i.e., the bearings with built-in freewheel are used as the freewheels 5.
  • Freewheels 5 orientation allows the transfer of the torque generated by the action of the cyclist's force from the cranks 4 to the shaft 2 as well as the cranks 4 free counter-rotation.
  • the bicycle cranks layout according to Fig. 2 allows both traditional drive by the mean of rotation of the cranks mutually placed under 1 80° as well as the drive based on alternating swinging movement of the cranks within the area of maximum torque developed by the cyclist's force action on the pedals.
  • the bearing caps 1 1 with built-in antifriction bearings 12 are bolted inside the bicycle frame 1 .
  • a shaft 2 with driving sprocket 3 bolted by the mean of screws 15 is placed.
  • Shafts 7 are placed inside the shaft 2 hollow on the both ends in bearings 16 and 1 7 and in the freewheel 5.
  • drawn cup roller clutches are used as the freewheels 5.
  • auxiliary shafts 7 The axial position of the auxiliary shafts 7 is ensured by the mean of retaining rings 18 and 19. Cranks 4 are bolted with the screws 23 on the quadrangular ends of the auxiliary shafts 7.
  • the freewheels 5 orientation allows the transfer of the torque generated by the action of the cyclist's force from the cranks 4 to the shaft 2 as well as the cranks free counter- rotation.
  • the bicycle design according to Fig. 3 allows only the drive based on alternating swinging movement of the cranks within the area of maximum torque developed by the cyclist's force action on the pedals.
  • This design is complementary to both first and second embodiments. It is adding the mutual coupling of the cranks 4 movements.
  • a pulley 21 with the drag rope 20 guided in its groove, is placed on the bicycle frame 1 .
  • the drag rope 20 ends are fixed to the cranks 4 next to the pedals 6. While the cyclist's force is acting on the pedal 6 on one of the cranks 4, the second crank 4 is counter-rotating due to their coupling by the mean of the drag rope 20 via pulley 21 .
  • the upper dead center of the cranks 4 is limited by the stop 22, thus limiting also the swing angle of the cranks 4.

Landscapes

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

Abstract

L'invention concerne un mécanisme de manivelle pour l'entraînement d'une bicyclette, fondé sur les éléments suivants : un arbre (2) doté d'un pignon d'entraînement (3) fixé de façon centrale et placé dans le cadre de bicyclette (1). Sur l'une et l'autre des extrémités de l'arbre (2), sont placées des manivelles (4) par l'intermédiaire de roues libres (5), qui assurent le transfert de couple des manivelles (4) à l'arbre (2) pendant la rotation des manivelles (4) dans la direction de l'action de force du cycliste sur les pédales (6) ainsi que la rotation libre des manivelles (4) dans la direction opposée. Étant donné que la rotation des manivelles (4) n'est pas mutuellement couplée, celles-ci peuvent également être utilisées pour un mouvement de balancement dans des directions mutuellement opposées, principalement dans la zone près de la position où la force du cycliste agissant sur les pédales (6) est perpendiculaire aux manivelles (4).
PCT/SK2016/050006 2015-05-20 2016-05-17 Mécanisme de manivelle pour entraînement de bicyclette Ceased WO2016186584A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SKPP5019-2015 2015-05-20
SK5019-2015A SK50192015A3 (sk) 2015-05-20 2015-05-20 Bicykel poháňaný kývavými pohybmi kľúk

Publications (1)

Publication Number Publication Date
WO2016186584A1 true WO2016186584A1 (fr) 2016-11-24

Family

ID=56360458

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SK2016/050006 Ceased WO2016186584A1 (fr) 2015-05-20 2016-05-17 Mécanisme de manivelle pour entraînement de bicyclette

Country Status (2)

Country Link
SK (1) SK50192015A3 (fr)
WO (1) WO2016186584A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108163125A (zh) * 2017-12-30 2018-06-15 天津市来悦科技有限公司 一种轮盘的曲柄驱动机构
CN108238195A (zh) * 2017-12-30 2018-07-03 天津市来悦科技有限公司 一种改进驱动方式的轮盘

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010027287A1 (fr) * 2008-09-05 2010-03-11 Tomasz Karlewski Velo de ville
CN203623892U (zh) * 2013-09-29 2014-06-04 长春工业大学 自行车中的曲柄往复摆动驱动装置
EP2824025A1 (fr) * 2012-03-08 2015-01-14 Panasonic Corporation Bicyclette électrique

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010027287A1 (fr) * 2008-09-05 2010-03-11 Tomasz Karlewski Velo de ville
EP2824025A1 (fr) * 2012-03-08 2015-01-14 Panasonic Corporation Bicyclette électrique
CN203623892U (zh) * 2013-09-29 2014-06-04 长春工业大学 自行车中的曲柄往复摆动驱动装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108163125A (zh) * 2017-12-30 2018-06-15 天津市来悦科技有限公司 一种轮盘的曲柄驱动机构
CN108238195A (zh) * 2017-12-30 2018-07-03 天津市来悦科技有限公司 一种改进驱动方式的轮盘

Also Published As

Publication number Publication date
SK50192015A3 (sk) 2016-12-01

Similar Documents

Publication Publication Date Title
US8146938B2 (en) Method and device for pedalling
TWI621563B (zh) 可鎖住或釋放雙向輸入單向輸出腳踏車
US9555853B2 (en) Propulsion system for human powered vehicles
US6540244B1 (en) Human-powered driving mechanism
US20140135159A1 (en) Treadle-drive eccentric wheel transmission wheel series with periodically varied speed ratio and having inward packing auxiliary wheel
CN203698564U (zh) 一种上下往复踩踏省力自行车
TW201139206A (en) Retrograde torque limit bicycle with bidirectional input and one-way output
WO2016186584A1 (fr) Mécanisme de manivelle pour entraînement de bicyclette
US20150226293A1 (en) Treadle-drive eccentric wheel transmission wheel series with periodically varied speed ratio
US10850800B2 (en) Bicycle drivetrain
CN101797948A (zh) 一种自行车传动装置
CA2773115C (fr) Series de roues motrices a roues excentrique a commande a pedales avec rapport de tranmission a variation periodique
CN203854811U (zh) 直驱式双翼车
CN102490849B (zh) 一种自行车双向驱动装置
KR102130604B1 (ko) 직립형 자전거의 크랭크 장치
RU95633U1 (ru) Педально-цепной привод велосипеда (варианты)
KR101712711B1 (ko) 싱글기어 자전거의 고정기어 및 프리휠 기어 자유전환 크랭크 세트
KR102284058B1 (ko) 페달링에 의해 구동되는 주기적인 속도비를 가진 편심바퀴 전동 휠 시스템
US9586649B2 (en) Treadle-drive transmission wheel series with periodically varied speed ratio and having inward packing auxiliary wheel
CN103448860A (zh) 几种创新踏杆驱动机构
JP2003011878A (ja) 楕円軌跡クランク
US20140217695A1 (en) Crank Assembly
KR200386602Y1 (ko) 자전거 동력전달장치
TWI555930B (zh) 多連桿轉動結構
CN103863501B (zh) 手脚控制方向前后驱动多功能自行车

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 16735734

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 16735734

Country of ref document: EP

Kind code of ref document: A1