WO1997021583A1 - Vehicle with at least three wheels and a suspension system - Google Patents

Vehicle with at least three wheels and a suspension system Download PDF

Info

Publication number
WO1997021583A1
WO1997021583A1 PCT/IT1996/000251 IT9600251W WO9721583A1 WO 1997021583 A1 WO1997021583 A1 WO 1997021583A1 IT 9600251 W IT9600251 W IT 9600251W WO 9721583 A1 WO9721583 A1 WO 9721583A1
Authority
WO
WIPO (PCT)
Prior art keywords
vehicle
frame
suspension system
wheels
arms
Prior art date
Application number
PCT/IT1996/000251
Other languages
French (fr)
Inventor
Romeo Muccio
Original Assignee
Romeo Muccio
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 Romeo Muccio filed Critical Romeo Muccio
Priority to AU11703/97A priority Critical patent/AU1170397A/en
Publication of WO1997021583A1 publication Critical patent/WO1997021583A1/en

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
    • B62K5/00—Cycles with handlebars, equipped with three or more main road wheels
    • B62K5/02—Tricycles
    • B62K5/05—Tricycles characterised by a single rear wheel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G21/00—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces
    • B60G21/007—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces means for adjusting the wheel inclination
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D9/00—Steering deflectable wheels not otherwise provided for
    • B62D9/02—Steering deflectable wheels not otherwise provided for combined with means for inwardly inclining vehicle body on bends
    • 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
    • B62K5/00—Cycles with handlebars, equipped with three or more main road wheels
    • B62K5/10—Cycles with handlebars, equipped with three or more main road wheels with means for inwardly inclining the vehicle body on bends

Definitions

  • the present invention relates to a vehicle with at least three wheels, and more specifically to a suspension system applied to a vehicle with at least three wheels.
  • the object of the present invention is to solve the above mentioned problems by providing a vehicle with at least three wheels that comprises a suspension system which allows the vehicle to improve stability thereof while moving in a curved trajectory, and allowing said vehicle to lean inwards said curved trajectory so that the sum of the resulting forces always pass through the centre of gravity thereof.
  • a further object of the present invention is to provide a vehicle with at least three wheels comprising a suspension system with a reliable high strength structure, easy to construct and therefore with low costs .
  • the present invention provides a vehicle with at least three wheels and a suspension system, comprising: - at least two arms, each of them hinged at one end thereof to the frame of the vehicle and at the opposite end thereof to the respective hub of the wheel;
  • Figure 1 is a front plan view partially showing the vehicle with the suspension system according to the present invention
  • figure 2 is a schematic top plan view partially showing the suspension system of figure 1
  • figure 3 is a schematic front view partially showing the vehicle of figure 1 inclined with respect to the vertical plane.
  • the vehicle has a rigid tubular frame 1, and a handlebar 2 (partially shown in the figure) is pivotally connected to the top thereof.
  • the handlebar 2 carries the usual controls as a throttle 3, a brake lever 4 and eventually a clutch lever 5.
  • the handlebar 2 is connected at the bottom part thereof to a rod member 6 (illustrated in more detail in the following) , which acts as a mobile connection for transforming the rotational displacement of the handlebar 2 into a longitudinal displacement of the steering bar 7.
  • two support members 8 are pivotally mounted on the rigid frame 1 by means of respective pins 9, which allow oscillation of said support members 8 with respect to the frame 1.
  • arms 10 are provided for connecting respective wheels 11 to the rame 1 by means of hinges 12 and 13 , respectively.
  • damping and elastic members 14 are mounted between the arms 10 and the frame 1 in the common manner.
  • Said damping and elastic members 14 are connected at one end thereof to the frame 1 by means of joints 15 and supports 16, and at the other end thereof by means of joints 17 (not shown in the figure) to the top arms 10.
  • joints 15 and 17 are not given any further because part of the state of the art.
  • figure 2 shows in a top plan view the abovementioned suspension system of the front part of the vehicle as illustrated in figure 1.
  • FIG 3 shows a vehicle with the suspension system according to the present invention in an inclined condition forming a generic angle ⁇ with respect to the vertical position, i.e. while travelling in a curved trajectory.
  • the arms 10 of the suspension system of the present invention remain parallel to each other and to the ground, whereas the wheels 11 have a parallel inclination with respect to the frame 1 of the vehicle.
  • This arrangement makes possible to improve stability of the vehicle on curved trajectories, as the sum of the resulting forces applied to the vehicle always passes through, or nearby, the centre of gravity thereof, preventing the generation of a overturn torque on the vehicle .
  • the present invention is not limited to the embodiment described above, but comprises any variation thereof which is comprised in the scope of the appended claims .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Automatic Cycles, And Cycles In General (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

A vehicle having at least three wheels (11) with a suspension system comprising at least two arms (10) hinged at one end thereof to the frame of the vehicle (1, 8, 16) and at the opposite end thereof to the hub of the respective wheel, damping and elastic members (14) hinged to said arms and to said frame of the vehicle; the arrangement of said arms on said frame being such that it allows the latter to be inclined inwards of a curved trajectory and in such a way that the sum of the resulting forces applied to said frame always passes through, or at least nearby the centre of gravity thereof (3).

Description

"VEHICLE WITH AT LEAST THREE WHEELS AND A SUSPENSION SYSTEM"
1. FIELD OF THE INVENTION The present invention relates to a vehicle with at least three wheels, and more specifically to a suspension system applied to a vehicle with at least three wheels.
2. DISCLOSURE OF THE CORRELATED ART
Up to now, light vehicles with at least three wheels and having a suspension system comprising a plurality of arms that render the wheels independent one from each other, are known.
This arrangement, although it is extremely simple in construction, causes the problem that the behaviour of the vehicle while moving on a curved tra ectory is not favourable to the stability of the vehicle itself.
This is due to the fact that the vehicle, while moving in a curved trajectory, tends to lean towards the outside of the curve, thereby moving the sum of the resulting forces outwards with respect to the centre of gravity thereof , thus creating a torque which tends to overturn the vehicle.
Obviously, the higher the speed in a curved trajectory the more the overturn torque increases, causing the vehicle to be very unstable.
SUMMARY OF THE INVENTION
Therefore, the object of the present invention is to solve the above mentioned problems by providing a vehicle with at least three wheels that comprises a suspension system which allows the vehicle to improve stability thereof while moving in a curved trajectory, and allowing said vehicle to lean inwards said curved trajectory so that the sum of the resulting forces always pass through the centre of gravity thereof. A further object of the present invention is to provide a vehicle with at least three wheels comprising a suspension system with a reliable high strength structure, easy to construct and therefore with low costs .
The present invention provides a vehicle with at least three wheels and a suspension system, comprising: - at least two arms, each of them hinged at one end thereof to the frame of the vehicle and at the opposite end thereof to the respective hub of the wheel;
- a plurality of damping and elastic members hinged to said arms and to said frame of the vehicle; characterised in that the arrangement of said arms on said frame is such that to allow the frame to be inclined inwards of a curved trajectory and in such a way that the sum of the resulting forces applied to said frame always passes through, or at least nearby the centre of gravity of said vehicle.
A preferred embodiment of the present invention will be now illustrated in greater detail by description thereof, given as a non-limiting example and with reference to the enclosed drawings. BRIEF DESCRIPTION OF THE DRAWINGS
Figure 1 is a front plan view partially showing the vehicle with the suspension system according to the present invention; figure 2 is a schematic top plan view partially showing the suspension system of figure 1; and figure 3 is a schematic front view partially showing the vehicle of figure 1 inclined with respect to the vertical plane.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT With reference now to figure 1, is partially shown in a schematic manner the front part of the vehicle with the suspension system according to the present invention
The vehicle has a rigid tubular frame 1, and a handlebar 2 (partially shown in the figure) is pivotally connected to the top thereof. The handlebar 2 carries the usual controls as a throttle 3, a brake lever 4 and eventually a clutch lever 5. The handlebar 2 is connected at the bottom part thereof to a rod member 6 (illustrated in more detail in the following) , which acts as a mobile connection for transforming the rotational displacement of the handlebar 2 into a longitudinal displacement of the steering bar 7. Also, two support members 8 are pivotally mounted on the rigid frame 1 by means of respective pins 9, which allow oscillation of said support members 8 with respect to the frame 1. At each end of said support members 8, arms 10 are provided for connecting respective wheels 11 to the rame 1 by means of hinges 12 and 13 , respectively.
Furthermore, a plurality of damping and elastic members 14 (two of them shown in the figure) are mounted between the arms 10 and the frame 1 in the common manner. Said damping and elastic members 14 are connected at one end thereof to the frame 1 by means of joints 15 and supports 16, and at the other end thereof by means of joints 17 (not shown in the figure) to the top arms 10. A detailed description of joints 15 and 17 is not given any further because part of the state of the art.
Also, connection of the wheel hubs 11 to the arms 10 and to the steering bar 7 is known, so description thereof is omitted. With reference now to figure 2, it shows in a top plan view the abovementioned suspension system of the front part of the vehicle as illustrated in figure 1.
With reference to figure 3, it shows a vehicle with the suspension system according to the present invention in an inclined condition forming a generic angle α with respect to the vertical position, i.e. while travelling in a curved trajectory.
Description of the parts shown in this figure is omitted, as their detailed description has already been given above .
As it can be seen, even when the vehicle is inclined and moving, the arms 10 of the suspension system of the present invention remain parallel to each other and to the ground, whereas the wheels 11 have a parallel inclination with respect to the frame 1 of the vehicle.
This arrangement makes possible to improve stability of the vehicle on curved trajectories, as the sum of the resulting forces applied to the vehicle always passes through, or nearby, the centre of gravity thereof, preventing the generation of a overturn torque on the vehicle . The present invention is not limited to the embodiment described above, but comprises any variation thereof which is comprised in the scope of the appended claims .

Claims

CLAIMS 1. A vehicle with at least three wheels and a suspension system, comprising:
- at least two arms, each of them hinged at one end thereof to the frame of the vehicle and at the opposite end thereof to the respective hub of the wheel;
- a plurality of damping and elastic members hinged to said arms and to said frame of the vehicle; characterised in that the arrangement of said arms on said frame is such that to allow the frame to be inclined inwards of a curved trajectory and in such a way that the sum of the resulting forces applied to said frame always passes through, or at least nearby the centre of gravity of said vehicle.
2. A vehicle according to claim 1, wherein the arrangement of the suspension system is such that the wheels of the vehicle are capable to lean inwards of a curved trajectory, and eventually in a parallel manner each one with respect to the other.
3. A vehicle according to claim 1 or 2 , wherein the arrangement of the suspension system is such that said wheels and said frame of the vehicle are capable to lean both inwards of a curved trajectory, and eventually in a parallel manner with respect to said frame.
4. A vehicle according to any of the preceding claims, wherein said suspension system is applied to at least one axle of the vehicle.
5. A vehicle according to any of the preceding claims, wherein said vehicle is a motorvehicle .
6. A vehicle with at least three wheels with a suspension system substantially as above described and with reference to the enclosed drawings.
PCT/IT1996/000251 1995-12-13 1996-12-13 Vehicle with at least three wheels and a suspension system WO1997021583A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU11703/97A AU1170397A (en) 1995-12-13 1996-12-13 Vehicle with at least three wheels and a suspension system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT95RM000812A IT1276243B1 (en) 1995-12-13 1995-12-13 VEHICLE WITH AT LEAST THREE WHEELS WITH SUSPENSION SYSTEM
ITRM95A000812 1995-12-13

Publications (1)

Publication Number Publication Date
WO1997021583A1 true WO1997021583A1 (en) 1997-06-19

Family

ID=11403707

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT1996/000251 WO1997021583A1 (en) 1995-12-13 1996-12-13 Vehicle with at least three wheels and a suspension system

Country Status (3)

Country Link
AU (1) AU1170397A (en)
IT (1) IT1276243B1 (en)
WO (1) WO1997021583A1 (en)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999041136A1 (en) * 1998-02-13 1999-08-19 Inovo S.N.C. Di Maurizio Ficcadenti & C. A three-wheeled car frame capable of inclining when handling a curve
NL1012714C2 (en) 1999-07-27 2001-01-30 Bob Bakker Stabilization device for both static and dynamic stabilization of construction elements.
EP1180476A1 (en) * 2000-08-10 2002-02-20 Marco Doveri A laterally tilting three-wheeled vehicle
GB2374327A (en) * 2001-03-27 2002-10-16 Andrew Felipe Trujillo Laterally tilting vehicle
WO2003018390A1 (en) 2001-08-30 2003-03-06 Hans Leeb Zweirad Handel Gmbh Motor vehicle comprising a driven rear wheel and two articulated front wheels
KR20030073497A (en) * 2002-03-12 2003-09-19 김진우 Three wheeled vehicle with bank control mechanism
KR100559777B1 (en) 2004-05-14 2006-04-13 주식회사 티지닉스 Scooter with steering mechanism
EP1872981A1 (en) 2006-06-26 2008-01-02 Industrial Technology Research Institute Structure for enabling independently suspended wheels to lean with vehicle hull
US7467802B2 (en) 2005-12-01 2008-12-23 Industrial Technology Research Institute Structure for enabling independently suspended wheels to lean with vehicle hull
FR2921628A1 (en) * 2007-10-02 2009-04-03 Guillaume Demolliens Terrestrial vehicle for e.g. three-wheel motor scooter, has axles with connection unit that inclines wheels while moving wheels along opposed horizontal directions, by inclination of frame around axis
DE102008008731A1 (en) 2008-02-11 2009-08-13 Kochlik, Klaus, Dipl.-Ing. Three-wheeled vehicle, has rear wheel driven by engine, and connectors sliding into guide shaft, which is fastened at vehicle frame, where wheels are moved up and down with respect to vehicle frame to ensure bending of vehicle
FR2937613A1 (en) * 2008-10-23 2010-04-30 La Celle Roland De Innovative boardsports practicing device for three-wheeled skate, has front wheels connected to respective central poles by crosspiece and by module, and central rear wheel provided with yoke and connected to one of poles by support
CN101638107B (en) * 2008-07-31 2011-07-20 上海坤孚企业(集团)有限公司 Balancing device for electro-tricycle
CN101638106B (en) * 2008-07-31 2011-07-20 上海坤孚企业(集团)有限公司 Wheel inclination structure for turning of electric motorcar
TWI617483B (en) * 2017-06-06 2018-03-11 立淵機械股份有限公司 A tilt back mechanism of a multi-link vehicle
JP2019214299A (en) * 2018-06-13 2019-12-19 川崎重工業株式会社 Saddle-riding type vehicle

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE822487C (en) * 1950-02-18 1951-11-26 Otto Holm Dr Ing Chassis for small cars
DE1063473B (en) * 1953-12-24 1959-08-13 Nsu Werke Ag Motorcycle-like vehicle with a front or rear wheel and two steering wheels arranged next to each other symmetrically to the longitudinal axis
FR2391892A1 (en) * 1976-11-02 1978-12-22 Lacrosse Valentin Variable geometry vehicle chassis - has wheel suspension mechanisms completely independent to cambering central body section
FR2486899A1 (en) * 1980-07-17 1982-01-22 Townsend Engineering Co AUTOMATICALLY BALANCED WHEEL MOUNTED VEHICLE
GB2155411A (en) * 1984-02-22 1985-09-25 Honda Motor Co Ltd Suspension apparatus for vehicle
EP0560670A1 (en) * 1992-03-10 1993-09-15 Pierre Patin Vehicle stabilisation device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE822487C (en) * 1950-02-18 1951-11-26 Otto Holm Dr Ing Chassis for small cars
DE1063473B (en) * 1953-12-24 1959-08-13 Nsu Werke Ag Motorcycle-like vehicle with a front or rear wheel and two steering wheels arranged next to each other symmetrically to the longitudinal axis
FR2391892A1 (en) * 1976-11-02 1978-12-22 Lacrosse Valentin Variable geometry vehicle chassis - has wheel suspension mechanisms completely independent to cambering central body section
FR2486899A1 (en) * 1980-07-17 1982-01-22 Townsend Engineering Co AUTOMATICALLY BALANCED WHEEL MOUNTED VEHICLE
GB2155411A (en) * 1984-02-22 1985-09-25 Honda Motor Co Ltd Suspension apparatus for vehicle
EP0560670A1 (en) * 1992-03-10 1993-09-15 Pierre Patin Vehicle stabilisation device

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999041136A1 (en) * 1998-02-13 1999-08-19 Inovo S.N.C. Di Maurizio Ficcadenti & C. A three-wheeled car frame capable of inclining when handling a curve
NL1012714C2 (en) 1999-07-27 2001-01-30 Bob Bakker Stabilization device for both static and dynamic stabilization of construction elements.
WO2001007275A1 (en) 1999-07-27 2001-02-01 Stabilex Stability arrangement for moving structural components
EP1180476A1 (en) * 2000-08-10 2002-02-20 Marco Doveri A laterally tilting three-wheeled vehicle
GB2374327A (en) * 2001-03-27 2002-10-16 Andrew Felipe Trujillo Laterally tilting vehicle
WO2003018390A1 (en) 2001-08-30 2003-03-06 Hans Leeb Zweirad Handel Gmbh Motor vehicle comprising a driven rear wheel and two articulated front wheels
KR20030073497A (en) * 2002-03-12 2003-09-19 김진우 Three wheeled vehicle with bank control mechanism
KR100559777B1 (en) 2004-05-14 2006-04-13 주식회사 티지닉스 Scooter with steering mechanism
US7467802B2 (en) 2005-12-01 2008-12-23 Industrial Technology Research Institute Structure for enabling independently suspended wheels to lean with vehicle hull
EP1894753A2 (en) 2006-06-26 2008-03-05 Industrial Technology Research Institute Structure for enabling independently suspended wheels to lean with vehicle hull
EP1872981A1 (en) 2006-06-26 2008-01-02 Industrial Technology Research Institute Structure for enabling independently suspended wheels to lean with vehicle hull
FR2921628A1 (en) * 2007-10-02 2009-04-03 Guillaume Demolliens Terrestrial vehicle for e.g. three-wheel motor scooter, has axles with connection unit that inclines wheels while moving wheels along opposed horizontal directions, by inclination of frame around axis
WO2009074752A2 (en) * 2007-10-02 2009-06-18 Guillaume Demolliens Machine with variable geometry axle
WO2009074752A3 (en) * 2007-10-02 2009-08-20 Guillaume Demolliens Machine with variable geometry axle
DE102008008731A1 (en) 2008-02-11 2009-08-13 Kochlik, Klaus, Dipl.-Ing. Three-wheeled vehicle, has rear wheel driven by engine, and connectors sliding into guide shaft, which is fastened at vehicle frame, where wheels are moved up and down with respect to vehicle frame to ensure bending of vehicle
CN101638107B (en) * 2008-07-31 2011-07-20 上海坤孚企业(集团)有限公司 Balancing device for electro-tricycle
CN101638106B (en) * 2008-07-31 2011-07-20 上海坤孚企业(集团)有限公司 Wheel inclination structure for turning of electric motorcar
FR2937613A1 (en) * 2008-10-23 2010-04-30 La Celle Roland De Innovative boardsports practicing device for three-wheeled skate, has front wheels connected to respective central poles by crosspiece and by module, and central rear wheel provided with yoke and connected to one of poles by support
TWI617483B (en) * 2017-06-06 2018-03-11 立淵機械股份有限公司 A tilt back mechanism of a multi-link vehicle
JP2019214299A (en) * 2018-06-13 2019-12-19 川崎重工業株式会社 Saddle-riding type vehicle

Also Published As

Publication number Publication date
IT1276243B1 (en) 1997-10-27
ITRM950812A0 (en) 1995-12-13
ITRM950812A1 (en) 1997-06-13
AU1170397A (en) 1997-07-03

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