WO1988009739A1 - Motocyclette - Google Patents

Motocyclette Download PDF

Info

Publication number
WO1988009739A1
WO1988009739A1 PCT/GB1988/000432 GB8800432W WO8809739A1 WO 1988009739 A1 WO1988009739 A1 WO 1988009739A1 GB 8800432 W GB8800432 W GB 8800432W WO 8809739 A1 WO8809739 A1 WO 8809739A1
Authority
WO
WIPO (PCT)
Prior art keywords
front wheel
axis
arm
motorcycle
arms
Prior art date
Application number
PCT/GB1988/000432
Other languages
English (en)
Inventor
Christopher David George Watts
Original Assignee
Christopher David George Watts
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 GB878713129A external-priority patent/GB8713129D0/en
Priority claimed from GB878727900A external-priority patent/GB8727900D0/en
Application filed by Christopher David George Watts filed Critical Christopher David George Watts
Publication of WO1988009739A1 publication Critical patent/WO1988009739A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K25/00—Axle suspensions
    • B62K25/04—Axle suspensions for mounting axles resiliently on cycle frame or fork
    • B62K25/12—Axle suspensions for mounting axles resiliently on cycle frame or fork with rocking arm pivoted on each fork leg
    • B62K25/14—Axle suspensions for mounting axles resiliently on cycle frame or fork with rocking arm pivoted on each fork leg with single arm on each fork leg
    • B62K25/16—Axle suspensions for mounting axles resiliently on cycle frame or fork with rocking arm pivoted on each fork leg with single arm on each fork leg for front wheel
    • 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
    • B62M23/00—Transmissions characterised by use of other elements; Other transmissions

Definitions

  • This invention relates to a motorcycle, and in the preferred embodiment provides a motorcycle which has front and rear wheels which are driven from a common engine.
  • a motorcycle comprising: a source of rotary power; and drive means coupling the front and rear wheels of the motorcycle to the source of rotary power, wherein the drive means incorporates a one way drive device whereby one wheel may turn faster than the rotational speed imposed upon it by the drive means.
  • the one way drive device permits the front wheel of the motorcycle to turn at a rotational speed greater than the rotational speed imposed upon it by the drive means.
  • This arrangement permits differential rotation of the front and rear wheels as necessitated by, for example, steering of the motorcycle.
  • the one way drive device is in the form of a sprag clutch which allows the front wheel to over-run the rear wheel when necessary.
  • the drive means comprises a constant velocity joint mounted on or adjacent the steering head of the motorcycle in such a way that the input of the CV joint is constrained to rotate about an axis fixed relative to the motorcycle frame, and the output of the CV joint is constrained to rotate about an axis fixed relative to the front forks. In this manner, drive can be transmitted to the front wheel without substantially interfering with the steering action of the motorcycle.
  • drive from the CV joint to the front wheel is via an idler gear which is mounted at the juncture of two pivotally connected arms, the first arm being constrained at the end remote from the idler gear to pivot about the axis of the output shaft of the CV joint, and the second arm being constrained to pivot at the end thereof remote from the idler gear about the axis of rotation of the front wheel.
  • the motorcycle includes a front suspension assembly mounted on the frame for pivotal movement about a steering axis, the front suspension assembly comprising: a first arm which extends from adjacent the steering axis downwardly and rearwardly to a point to the rear of the front wheel; second and third arms connected to the lower end of the first arm for pivotal movement about a common pivot axis, the second and third arms extending along respective sides of the front wheel from the pivot axis to the axis of rotation of the front wheel where they are rotatably connected to the front wheel to support the front wheel in use; and a linkage interconnecting the second and third arms with the first arm, said linkage including a resiliently deformable member which resiliently opposes upward movement of the front wheel relative to the chassis and means constraining the second and third arms to move conjointly as the front wheel moves up and down relative to the chassis in use whereby the axis of rotation of the wheel at all times remains parallel to the p vot axis.
  • the front arm preferably comprises two rigidly interconnected members spaced apart one on either side of the longitudinal central plane of the front wheel.
  • the linkage may then comprise a wishbone pivotally connected to the members of the first arm to provide a pair of forwardly extending legs having terminal ends which respectively overlie the second and third arms, and a single rearwardly extending leg.
  • Each forwardly extending leg is connected to the one of the second and third arms which it overlies by a rigid strut, and the rearwardly extending leg is coupled to the lower end of the first arm by a spring damper.
  • This arrangement has the advantage that the characteristics of the suspension may readily be varied by altering the length of the struts, and/or the position of the interconnection between the struts and the second and third arms.
  • first arm comprising spaced apart members
  • a wishbone as described above enables the periphery of the wheel to enter the zone between the members of the first arm in the extreme upper position of the front wheel, thereby enabling a relatively compact arrangement to provide substantial front wheel travel.
  • Figure 1 is a schematic side view of a preferred embodiment of the invention
  • Figure 2 is a schematic front view of part of the embodiment of Figure 1 ;
  • Figure 3 illustrates schematically a side view of a portion of a second embodiment of the invention.
  • Figure 4 is a view in the direction of the arrow IV of Figure 1 , with the wheel partly broken away in the interests of clarity.
  • the motorcycle 1 illustrated comprises a frame 2, rear wheel 3, and front wheel 4.
  • An engine and transmission assembly 5 is mount on the frame in conventional manner and includes an output sprocket 6 which drives the rear wheel 3 via a chain 7 in conventional manner.
  • a second chain 8 is driven from the sprocket 6 and in turn drives a sprag clutch 9.
  • the output of the sprag clutch 9 drives a chain 10 which in turn drives the input shaft 11 of a constant velocity joint 12.
  • the input shaft 11 is mounted in a manner which permits it to rotate only about an axis which is fixed relative to the chassis 2.
  • the pivotal axis 13 of the constant velocity joint is located on the axis of the steering head, and the output shaft 14 of the constant velocity joint is constrained to rotate about an axis which is fixed relative to the front forks of the motorcycle.
  • a sprocket is mounted on the output shaft 14 and drives a chain 15 which in turn drives an idler wheel 16 mounted at the apex of two articulated arms 17,18.
  • the end of the arm 17 remote from the idler wheel 16 pivots about the axis of the output shaft 1
  • the end of the arm 18 remote from the idler wheel 16 pivots about the axis of rotation 19 of the front wheel 4.
  • the idler wheel 16 drives a sprocket 20 fast with the front wheel via a chain 21.
  • the bearings upon which the idler wheel 16 is mounted are contained in a variable eccentric mounting which enables the chains 15,21 to be tensioned.
  • the arrangement of the arms 17,18 enables the chain drive arrangement to accommodate the telescopic movement of the front wheel in conventional manner.
  • the motorcycle 101 comprises a chassis 102 defining a steering axis 103 about which the front suspension 104 is pivotally turned in use by means of conventional handle bars (not shown).
  • the front suspension assembly comprises a first arm 105 which extends from adjacent the pivot axis 103 downwardly and rearwardly to a point behind the front wheel 106 and substantially at the same horizontal level as the axis of rotation 107 of the front wheel, when the motorcycle is at a nominal loading.
  • the lower end 108 of the first arm defines a pivot axis 109 about which second and third arms 110,111 are pivotally mounted.
  • the front ends of the arms 110,111 are interconnected by the spindle 115 about which the front wheel rotates, and accordingly the arms 110,111 support the front wheel in use.
  • the first arm 105 comprises a pair of members 112,113 rigidly interconnected by plates 114 at the upper ends thereof, and by a suitable member (not shown) at the lower ends thereof.
  • the members 112,113 are spaced apart on either side of the central plane 116 of the front wheel 106.
  • a wishbone 117 is pivotally mounted via pivot pins 118,119 on the members 112,113 to provide a pair of forwardly extending legs 120,121 and a single rearwardly extending leg 122.
  • the legs 120,121 each terminate at a point vertically above one of the arms 110,111, and each arm 110 r 111 is connected to the overlying leg of the wishbone by a respective strut 123.
  • a combined spring and damper 124 of conventional design is located between the rearwardly extending leg 122 of the wishbone and the member which interconnects the lower ends of the members 112,113.
  • the characteristics of the suspension can be adjusted by varying the length of the struts 123 and/or the position of the point 126 along the arms 1l0 r 111 at which the struts 123 are connected.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Axle Suspensions And Sidecars For Cycles (AREA)

Abstract

Une motocyclette comprend une unité à moteur et à transmission (5) comportant un pignon de chaîne de sortie (3), relié à la roue arrière (3) par une chaîne d'entraînement (7) et à la roue avant (4) par l'intermédiaire d'un train d'entraînement constitué par une première chaîne (8), par un couplage à roue libre (9), par une deuxième chaîne (10), par un assemblage à vitesse constante (12), par une troisième chaîne (15) et par une quatrième chaîne (21). Le couplage à roue libre (9) permet à la roue avant de tourner plus vite que la roue arrière lors d'une manoeuvre de direction et l'assemblage à vitesse constante transfère les mouvements de direction depuis les éléments montés sur le châssis vers les fourches avant sans interférer avec la manoeuvre de direction de la motocyclette.
PCT/GB1988/000432 1987-06-04 1988-06-02 Motocyclette WO1988009739A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB8713129 1987-06-04
GB878713129A GB8713129D0 (en) 1987-06-04 1987-06-04 Motor-cycle
GB878727900A GB8727900D0 (en) 1987-11-28 1987-11-28 Motor cycle
GB8727900 1987-11-28

Publications (1)

Publication Number Publication Date
WO1988009739A1 true WO1988009739A1 (fr) 1988-12-15

Family

ID=26292320

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1988/000432 WO1988009739A1 (fr) 1987-06-04 1988-06-02 Motocyclette

Country Status (2)

Country Link
EP (1) EP0316395A1 (fr)
WO (1) WO1988009739A1 (fr)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990011218A1 (fr) * 1989-03-29 1990-10-04 Charron Jean Yves Dispositif d'entrainement de la roue avant d'une motocyclette a deux roues motrices et la motocyclette associee
EP0405509A1 (fr) * 1989-06-28 1991-01-02 Suzuki Kabushiki Kaisha Motocyclette avec propulsion pour la roue avant et la roue arrière
US5014808A (en) * 1987-02-09 1991-05-14 Savard Frank J Two wheeled vehicle having an adjustable castor and castor angle
FR2656847A1 (fr) * 1990-01-08 1991-07-12 Savard Franck Ensemble de pieces pour permetrre a un velo d'avoir les deux roues motrices.
FR2658152A1 (fr) * 1990-02-15 1991-08-16 Biannic Jean Chistophe Dispositif de propulsion pour bicyclette a deux roues motrices et bicyclette munie de ce dispositif.
US5054572A (en) * 1990-06-20 1991-10-08 Parker James G Front wheel drive system for a motorcycle
EP0456250A1 (fr) * 1990-05-10 1991-11-13 Lester John Erlston Véhicule à deux roues avec deux roues motrices
US5324057A (en) * 1991-03-08 1994-06-28 Francois Chartrand Two-wheel drive cycle
US5894903A (en) * 1996-02-29 1999-04-20 Hieble; Siegfried Motorcycle with adjustable-power front wheel drive (all wheel drive)
FR2772681A1 (fr) * 1997-12-22 1999-06-25 Cyrille Yves Rigo Dispositif sons forme de kit permettant de transformer une moto a une roue motrice en une moto a deux roues motrices
US6820886B2 (en) 2001-04-19 2004-11-23 Roger David Scott Goldammer Modular butt-jointed yoke for motorcycles
WO2006106592A1 (fr) * 2005-02-25 2006-10-12 Tokyo University Of Science Dispositif de transmission de rotation et vehicule associe
WO2010091336A2 (fr) 2009-02-09 2010-08-12 Lawson Martin E Motocycle toutes roues motrices
CN102745298A (zh) * 2012-07-11 2012-10-24 天津比沃科技有限公司 电动自行车的中置驱动系统
WO2014165774A1 (fr) * 2013-04-05 2014-10-09 Lawson Martin E Motocycle à transmission intégrale présentant de meilleures capacités sur un terrain souple

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE228336C (fr) *
DE1120300B (de) * 1956-06-21 1961-12-21 Auto Union Gmbh Vorderradfederung fuer Motorraeder
US3045772A (en) * 1959-02-17 1962-07-24 Theodore R Nicolai Drive for motor bikes
US3268025A (en) * 1963-08-20 1966-08-23 Nethercutt Ind Corp Motorcycle having two driven wheels
FR2579950A1 (en) * 1985-04-04 1986-10-10 Decouroux Robert Device for transmission to the front wheel for a motor bike with rear wheel drive or otherwise

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE228336C (fr) *
DE1120300B (de) * 1956-06-21 1961-12-21 Auto Union Gmbh Vorderradfederung fuer Motorraeder
US3045772A (en) * 1959-02-17 1962-07-24 Theodore R Nicolai Drive for motor bikes
US3268025A (en) * 1963-08-20 1966-08-23 Nethercutt Ind Corp Motorcycle having two driven wheels
FR2579950A1 (en) * 1985-04-04 1986-10-10 Decouroux Robert Device for transmission to the front wheel for a motor bike with rear wheel drive or otherwise

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5014808A (en) * 1987-02-09 1991-05-14 Savard Frank J Two wheeled vehicle having an adjustable castor and castor angle
FR2645107A1 (fr) * 1989-03-29 1990-10-05 Savard Franck Moto a une ou deux roues motrices et a fourche avant telescopique pendulaire
WO1990011218A1 (fr) * 1989-03-29 1990-10-04 Charron Jean Yves Dispositif d'entrainement de la roue avant d'une motocyclette a deux roues motrices et la motocyclette associee
AU622565B2 (en) * 1989-06-28 1992-04-09 Suzuki Jidosha Kogyo Kabushiki Kaisha Front and rear wheel drive motorcycle
EP0405509A1 (fr) * 1989-06-28 1991-01-02 Suzuki Kabushiki Kaisha Motocyclette avec propulsion pour la roue avant et la roue arrière
US5113964A (en) * 1989-06-28 1992-05-19 Suzuki Jidosha Kogyo Kabushiki Kaisha Front and rear wheel drive motorcycle
FR2656847A1 (fr) * 1990-01-08 1991-07-12 Savard Franck Ensemble de pieces pour permetrre a un velo d'avoir les deux roues motrices.
FR2658152A1 (fr) * 1990-02-15 1991-08-16 Biannic Jean Chistophe Dispositif de propulsion pour bicyclette a deux roues motrices et bicyclette munie de ce dispositif.
WO1991012167A1 (fr) * 1990-02-15 1991-08-22 Biannic Jean Christophe Dispositif de propulsion pour bicyclette a deux roues motrices et bicyclette munie de ce dispositif
EP0456250A1 (fr) * 1990-05-10 1991-11-13 Lester John Erlston Véhicule à deux roues avec deux roues motrices
US5224725A (en) * 1990-05-10 1993-07-06 Erlston Lester J Two-wheeled-drive two wheeled vehicle
US5054572A (en) * 1990-06-20 1991-10-08 Parker James G Front wheel drive system for a motorcycle
US5324057A (en) * 1991-03-08 1994-06-28 Francois Chartrand Two-wheel drive cycle
US5894903A (en) * 1996-02-29 1999-04-20 Hieble; Siegfried Motorcycle with adjustable-power front wheel drive (all wheel drive)
FR2772681A1 (fr) * 1997-12-22 1999-06-25 Cyrille Yves Rigo Dispositif sons forme de kit permettant de transformer une moto a une roue motrice en une moto a deux roues motrices
WO1999032349A1 (fr) * 1997-12-22 1999-07-01 Cyrille Rigo Dispositif sous forme de kit permettant de transformer une moto a une roue motrice en une moto a deux roues motrices
US6820886B2 (en) 2001-04-19 2004-11-23 Roger David Scott Goldammer Modular butt-jointed yoke for motorcycles
WO2006106592A1 (fr) * 2005-02-25 2006-10-12 Tokyo University Of Science Dispositif de transmission de rotation et vehicule associe
JP4863515B2 (ja) * 2005-02-25 2012-01-25 学校法人東京理科大学 回転伝達装置及びそれを用いた車両
EP2393705A4 (fr) * 2009-02-09 2015-10-28 Martin E Lawson Motocycle toutes roues motrices
WO2010091336A2 (fr) 2009-02-09 2010-08-12 Lawson Martin E Motocycle toutes roues motrices
CN102745298A (zh) * 2012-07-11 2012-10-24 天津比沃科技有限公司 电动自行车的中置驱动系统
CN102745298B (zh) * 2012-07-11 2015-04-22 天津比沃科技有限公司 电动自行车的中置驱动系统
WO2014165774A1 (fr) * 2013-04-05 2014-10-09 Lawson Martin E Motocycle à transmission intégrale présentant de meilleures capacités sur un terrain souple
EP2981453A1 (fr) * 2013-04-05 2016-02-10 Martin E. Lawson Motocycle à transmission intégrale présentant de meilleures capacités sur un terrain souple
US9315233B2 (en) 2013-04-05 2016-04-19 Martin E. Lawson All wheel drive motorcycle with enhanced soft terrain capabilities
EP2981453A4 (fr) * 2013-04-05 2017-04-26 Martin E. Lawson Motocycle à transmission intégrale présentant de meilleures capacités sur un terrain souple
US9828062B2 (en) 2013-04-05 2017-11-28 Martin E. Lawson All wheel drive motorcycle with enhanced soft terrain capabilities

Also Published As

Publication number Publication date
EP0316395A1 (fr) 1989-05-24

Similar Documents

Publication Publication Date Title
WO1988009739A1 (fr) Motocyclette
EP0445841B1 (fr) Motocyclette à roue avant motrice et directrice avec jambe de force
US4786075A (en) Saddle-type four-wheel vehicle for running on unleveled ground
WO1989012571A1 (fr) Transmission pour vehicule a au moins une roue motrice
JP3303020B2 (ja) スノーモービルのリヤサスペンション
US4463824A (en) Drive wheel suspension system for motorcycle
JPH08253189A (ja) オートバイ用入れ子式前輪懸架装置
US3045772A (en) Drive for motor bikes
GB2038736A (en) Resilient suspension of cycle wheels
TW200528332A (en) Four-wheeled vehicle
WO2003093096A1 (fr) Axe de roue arriere pour motocycles a transmission par arbre a cardan
US4984650A (en) Motorcycle
US2942487A (en) Variable speed friction disc transmission
US2873656A (en) Chain drive for vibrating planing rollers
US4650025A (en) Vehicle with power unit
US4655311A (en) Rear wheel steering device for motorcycles
EP0979190B1 (fr) Bogie moteur de vehicule de traction
US2475487A (en) Individual drive wheel suspension
US2259724A (en) Road sweeper
FR2504107A1 (fr) Chariot de manutention dont les roues sont independantes et pourvues chacune d'un dispositif de suspension
JPH0924879A (ja) 自動二輪車における車高調整装置
JPH0632476Y2 (ja) 鞍乗型車両の後輪懸架装置
JPH0268281A (ja) 自動二輪車
GB1567774A (en) Motorcycles
JP2858334B2 (ja) 前後輪駆動自動二輪車の前輪駆動装置

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): GB JP US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE FR GB IT LU NL SE

WWE Wipo information: entry into national phase

Ref document number: 1988904595

Country of ref document: EP

WWP Wipo information: published in national office

Ref document number: 1988904595

Country of ref document: EP

WWW Wipo information: withdrawn in national office

Ref document number: 1988904595

Country of ref document: EP