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WO2000026080A1 - Pedalier de bicyclette a manivelles telescopiques - Google Patents

Pedalier de bicyclette a manivelles telescopiques Download PDF

Info

Publication number
WO2000026080A1
WO2000026080A1 PCT/JP1999/006073 JP9906073W WO0026080A1 WO 2000026080 A1 WO2000026080 A1 WO 2000026080A1 JP 9906073 W JP9906073 W JP 9906073W WO 0026080 A1 WO0026080 A1 WO 0026080A1
Authority
WO
WIPO (PCT)
Prior art keywords
cam
crank
pedal
bicycle
auxiliary
Prior art date
Application number
PCT/JP1999/006073
Other languages
English (en)
Japanese (ja)
Inventor
Yoshiyuki Sumitomo
Original Assignee
Yoshiyuki Sumitomo
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 Yoshiyuki Sumitomo filed Critical Yoshiyuki Sumitomo
Publication of WO2000026080A1 publication Critical patent/WO2000026080A1/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
    • B62M3/00—Construction of cranks operated by hand or foot
    • B62M3/02—Construction of cranks operated by hand or foot of adjustable length
    • B62M3/04—Construction of cranks operated by hand or foot of adjustable length automatically adjusting

Definitions

  • the pedal crank automatically extends during the section where the stepping force is effectively applied to obtain a large output, and the section where the stepping force is not effectively applied is obtained.
  • This is a pedal crank telescopic bicycle that can prevent the rider's foot from coming off the pedal due to the pedal pedal shrinking.
  • the pedaling force acts on the pedal while the pedal crank rotates 180 ° forward from the state of being directly above, but does not act at all during the remaining 180 °. It was made by paying attention to the fact that it works effectively during the upper 90 ° even between 180 ° where the stepping force acts. More specifically, power pedals can be improved by configuring the pedal crank so that the pedal crank intervenes while the pedal crank rotates forward from the top right, and gradually contracts while the pedal crank rotates directly below. Further, the above-mentioned problem can be solved. Disclosure of the invention
  • the pedal crank telescopic bicycle of the present invention is a bicycle double pedal crank.
  • the auxiliary crank (42) has a cam opening (43) protruding from the side thereof, and the bicycle frame (1) has a force roller (6) for guiding the cam roller (43).
  • the cam (6) or the pedal crank (4) is provided with follow-up means (60) for causing the cam roller (43) to follow the cam surface.
  • the auxiliary crank (42) is gradually extended while the bedal crank (4) is facing upward from the state directly facing upward, and the auxiliary crank (42>) is retracted while rotating downward from the front.
  • the cam roller (43) To the cam roller (43).
  • the cam (6) has a substantially oval cam groove (63) in which a cam roller (43) is rotatably fitted on a plate, and a cam surface and a cam roller follower (60) are provided in the cam groove (63). It can double.
  • the cam (6a) defines the inner surface of the hole formed in the plate as the cam surface (68), and connects the auxiliary crank (42) with a panel (45) that urges the pedal in the direction in which the pedal crank (4) extends.
  • a cam roller following means (60) can be used.
  • the cam (6b) is an endless rail, and the auxiliary crank (42) has an engaging portion (47) which is slidably engaged so as not to come off the rail.
  • Figure 1 is a front view of a bicycle.
  • FIG. 2 is a perspective view around the pedal crank.
  • FIG. 3 is a perspective view showing an engaged state of the main crank and the auxiliary crank of the pedal crank.
  • FIG. 4 is a front view of another embodiment of the cam.
  • FIG. 5 is a front view of the embodiment of the rail cam. BEST MODE FOR CARRYING OUT THE INVENTION
  • FIG. 1 shows an example of the pedal crank telescopic bicycle of the present invention
  • FIG. 2 is a perspective view of the bicycle around the pedal crank. Similar to known bicycles, it has wheels (2) and (21) before and after the bicycle frame (1), and the intersection of the lower pipe (12) and the vertical pipe (13) of the bicycle frame (1).
  • a crank pin (31) is pivotally supported on the crank pin (31), and a large gear (3) is supported on the crank pin (31) so as to be able to rotate integrally with the pin (31).
  • the large gear (3) and the small gear (not shown) on the rear wheel (21) are connected by an endless chain (32).
  • the large gear (3) and the chain (32) are hidden by the chain cover (33).
  • a pair of pedal cranks (4) and (4) are fixed at both ends of the crank pin (31) out of phase by 180 °, and a pedal (5) is rotatably attached to the tip of the pedal crank (4). I have.
  • a feature of the present invention is that the pedal crank (4) can extend and contract, and the bicycle frame (1) and the pedal crank (4) have a force (6) for expanding and contracting the pedal crank (4) and a cam roller follower (60). ) Is deployed.
  • Pedal crank (4) has a main crank (41) of a hollow rod whose base end is fixed to crank pin (31) and whose front end is open. It is composed of an auxiliary crank (42>) on which a pedal (5) is pivotally supported. As shown in FIG. 3, a cam port (43) is pivotally supported on the inner side surface at the base end side of the auxiliary crank (42), and the support shaft (46) of the cam roller (43) is connected to the main crank (41). It passes through a slit hole (44) opened on the side so that it can slide.
  • plate-like cams (6) and (6) are arranged in parallel with the rotation plane of the pedal crank (4).
  • a substantially elliptical inner plate (61) is fitted into the hole of the outer plate (62) having a substantially elliptical hole, and the cam (6) is provided between the two plates (61) and (62).
  • the cam roller (43) has a substantially elliptical cam groove (63) in which the cam roller (43) is fitted so as to roll smoothly.
  • the outer plate (62) is screwed and fixed to a mounting shaft (65) and a mounting block (66) projecting from the bicycle frame (1) by welding or the like, and the two outer plates sandwiching the bicycle frame (1) therebetween.
  • the plates (62) and (62) are connected by a plurality of connecting stays (67).
  • the inner plate (6) is fixed to the outer plate (62) by a plurality of connecting fittings (64) so as not to hinder the movement of the cam roller (43).
  • the cam groove (63) of the cam (6) gradually moves away from the crankpin (31) until the pedal crank (4) faces directly upward and falls forward 90 °, and then rotates 90 ”. Approach the crank pin (31) one by one until facing directly below. During the remaining 18 CTs, attach the bicycle to the bicycle frame (1) so that it has an arc of the same radius from the crank pin (31). Have been.
  • the difference between the maximum distance and the minimum distance of the cam groove (63) from the crankpin (31) is 5 O mm.
  • the pedal crank (4) When the pedal (5) at the position directly above is depressed, that is, the pedal crank (4) is gradually extended by being guided by the force cam (6), that is, the distance from the point of force to the fulcrum is extended by leverage principle, Large output can be obtained.
  • the power is increased by about 30%, and a hill which has to be climbed by pushing a bicycle can be easily climbed. Even people with weak legs can ride a bicycle comfortably.
  • FIG. 4 shows another embodiment of the cam (6a) and the cam roller following means (60).
  • the cam (6a) is obtained by omitting the inner plate (61) of the cam (6) composed of the inner plate (6) and the outer plate (62) in FIG.
  • the cam (3) does not follow the cam surface (68), so the spring (45) that constantly urges the auxiliary crank (42) in the protruding direction is provided in the main crank (41). Built-in, it is used as a cam follower (60).
  • the cam groove (63) formed between the inner plate (61) and the outer plate (62) has a uniform width so that the cam roller 3) rolls without play. High precision machining is required.
  • the cam roller (43) is pressed against the force surface (68), which is the hole ⁇ , by a spring force, and the cam roller (43>) follows the cam surface (68). Therefore, the accuracy of the cam surface (68) is lower than that of the cam groove (63) of the cam (6) in FIG.
  • the cam (6) in Fig. 2 can be replaced with a cam with only the inner plate (61) by omitting the outer plate (62)
  • the pedal crank (4) is replaced with the auxiliary crank (4 2) It is only necessary to provide a panel that constantly biases the in the retraction direction. With a smaller cam, the size of the cam can be reduced, so that there is little design restriction on the bicycle.
  • FIG. 5 shows an embodiment in which the cam (6b) is formed by a substantially elliptical endless rail.
  • Two auxiliary wheels (43) and (43) are arranged opposite to the auxiliary crank (42) of the pedal crank (4) with the rail interposed therebetween.
  • the two cam rollers (43) and (43) slide the rail without coming off the rail.
  • An engaging portion (47) is formed.
  • the cam groove (63) can also serve as the cam roller follower (60), and the cam roller (43) can be used. You can be sure to guide you along the cam track.
  • the inner surface of the hole formed in the plate is not provided with the cam surface (6 8).
  • the endless rail is formed as a cam (6b), and the auxiliary crank (42) is provided with an engaging portion (47) which is slidably engaged so as not to come off the rail, the cam (6b) ) Can be reduced in size and weight.

Landscapes

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

Abstract

Chaque manivelle (4) et (4) du pédalier d'une bicyclette comprend une manivelle principale (41), dont l'extrémité de base est fixée sur un maneton de manivelle (31) passant à travers le centre d'un grand plateau cranté (3) autour duquel passe une chaîne (32), ainsi qu'une manivelle auxiliaire (42), étroitement ajustée et coulissante longitudinalement dans la manivelle principale (41), et pourvue d'une pédale (5) au niveau de sa partie d'extrémité ; un galet de came (43) monté saillant à partir de la surface latérale de la pédale auxiliaire (42), ainsi qu'une came (6), montée sur le cadre (1) de la bicyclette et qui guide le galet de came (43) parallèlement au plan de rotation de la manivelle (4) du pédalier, de manière à déployer graduellement la manivelle auxiliaire (42), lorsque le pédalier (4) tourne pour passer d'un sens vertical vers un sens avant, et à rétracter graduellement cette manivelle (42), lorsque le pédalier tourne pour passer du sens avant vers le bas.
PCT/JP1999/006073 1998-11-02 1999-11-01 Pedalier de bicyclette a manivelles telescopiques WO2000026080A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP10311857A JP2000142534A (ja) 1998-11-02 1998-11-02 ペダルクランク伸縮自転車
JP10/311857 1998-11-02

Publications (1)

Publication Number Publication Date
WO2000026080A1 true WO2000026080A1 (fr) 2000-05-11

Family

ID=18022264

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1999/006073 WO2000026080A1 (fr) 1998-11-02 1999-11-01 Pedalier de bicyclette a manivelles telescopiques

Country Status (2)

Country Link
JP (1) JP2000142534A (fr)
WO (1) WO2000026080A1 (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003080422A1 (fr) * 2002-03-26 2003-10-02 Enos Polvanesi Ensemble pedalier ameliore pour bicyclettes
GB2409844A (en) * 2004-01-08 2005-07-13 Neil Sim Cycle crank arm axle assembly to provide elliptical pedal trajectory
GB2428412A (en) * 2005-07-19 2007-01-31 Edward David Reynolds Crank system
WO2008007407A3 (fr) * 2006-07-10 2008-02-28 Agnelo Marcello Di Manivelle de pédalier à valeur ajoutée, appliquée à des bicyclettes
US8146938B2 (en) 2005-09-27 2012-04-03 Dreamslide Method and device for pedalling
CN103661759A (zh) * 2012-09-11 2014-03-26 张凯祐 自行车伸缩曲柄
US20160355232A1 (en) * 2014-02-28 2016-12-08 Alan John Robinson A cycling aid
ITUB20152762A1 (it) * 2015-08-03 2017-02-03 Gianni Zanieri Dispositivo per bicicletta.
CN112437737A (zh) * 2018-07-18 2021-03-02 费利克斯·施密特 具有作用杠杆长度的周期性改变的曲柄传动装置
US11242113B2 (en) 2018-11-08 2022-02-08 Mga Entertainment, Inc. Child's riding bike that converts between a balance bike and a pedal-powered bicycle

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20080073686A (ko) * 2008-07-18 2008-08-11 이근형 원통캠을 이용한 신축가능한 크랭크 암
JP7138369B1 (ja) * 2021-04-02 2022-09-16 アベテクノシステム株式会社 乗り物用クランク

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5459661U (fr) * 1977-10-03 1979-04-25
JPS58106296U (ja) * 1982-01-14 1983-07-19 佐藤　球夫 自転車のクランク構造
EP0093201A2 (fr) * 1982-04-30 1983-11-09 Freder Stuckenbrok Dispositif d'entraînement pour cycles etc
DE3712794A1 (de) * 1987-04-04 1988-10-27 Edgar Loehr Antriebsvorrichtung fuer ein fahrrad
JPH0789477A (ja) * 1993-09-20 1995-04-04 Nobuo Fukushima 自転車用駆動装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5459661U (fr) * 1977-10-03 1979-04-25
JPS58106296U (ja) * 1982-01-14 1983-07-19 佐藤　球夫 自転車のクランク構造
EP0093201A2 (fr) * 1982-04-30 1983-11-09 Freder Stuckenbrok Dispositif d'entraînement pour cycles etc
DE3712794A1 (de) * 1987-04-04 1988-10-27 Edgar Loehr Antriebsvorrichtung fuer ein fahrrad
JPH0789477A (ja) * 1993-09-20 1995-04-04 Nobuo Fukushima 自転車用駆動装置

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003080422A1 (fr) * 2002-03-26 2003-10-02 Enos Polvanesi Ensemble pedalier ameliore pour bicyclettes
GB2409844A (en) * 2004-01-08 2005-07-13 Neil Sim Cycle crank arm axle assembly to provide elliptical pedal trajectory
GB2428412A (en) * 2005-07-19 2007-01-31 Edward David Reynolds Crank system
US8146938B2 (en) 2005-09-27 2012-04-03 Dreamslide Method and device for pedalling
WO2008007407A3 (fr) * 2006-07-10 2008-02-28 Agnelo Marcello Di Manivelle de pédalier à valeur ajoutée, appliquée à des bicyclettes
CN103661759A (zh) * 2012-09-11 2014-03-26 张凯祐 自行车伸缩曲柄
US20160355232A1 (en) * 2014-02-28 2016-12-08 Alan John Robinson A cycling aid
US10259525B2 (en) * 2014-02-28 2019-04-16 Alan John Robinson Cycling aid
ITUB20152762A1 (it) * 2015-08-03 2017-02-03 Gianni Zanieri Dispositivo per bicicletta.
CN112437737A (zh) * 2018-07-18 2021-03-02 费利克斯·施密特 具有作用杠杆长度的周期性改变的曲柄传动装置
CN112437737B (zh) * 2018-07-18 2023-06-13 费利克斯·施密特 具有作用杠杆长度的周期性改变的曲柄传动装置
US11242113B2 (en) 2018-11-08 2022-02-08 Mga Entertainment, Inc. Child's riding bike that converts between a balance bike and a pedal-powered bicycle

Also Published As

Publication number Publication date
JP2000142534A (ja) 2000-05-23

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