EP4294652A1 - Vehicule pendulaire avec essieu a deux roues equipe d'une premiere suspension - Google Patents
Vehicule pendulaire avec essieu a deux roues equipe d'une premiere suspensionInfo
- Publication number
- EP4294652A1 EP4294652A1 EP22702498.1A EP22702498A EP4294652A1 EP 4294652 A1 EP4294652 A1 EP 4294652A1 EP 22702498 A EP22702498 A EP 22702498A EP 4294652 A1 EP4294652 A1 EP 4294652A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- suspension
- vehicle
- vehicle according
- chassis
- pivot
- 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.)
- Withdrawn
Links
Classifications
-
- 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
- B60G21/02—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected
- B60G21/04—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected mechanically
- B60G21/05—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected mechanically between wheels on the same axle but on different sides of the vehicle, i.e. the left and right wheel suspensions being interconnected
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G11/00—Resilient suspensions characterised by arrangement, location or kind of springs
- B60G11/14—Resilient suspensions characterised by arrangement, location or kind of springs having helical, spiral or coil springs only
- B60G11/16—Resilient suspensions characterised by arrangement, location or kind of springs having helical, spiral or coil springs only characterised by means specially adapted for attaching the spring to axle or sprung part of the vehicle
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- 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 SIDECARS, 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
- B60G2204/10—Mounting of suspension elements
- B60G2204/12—Mounting of springs or dampers
- B60G2204/124—Mounting of coil springs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
- B60G2204/40—Auxiliary suspension parts; Adjustment of suspensions
- B60G2204/421—Pivoted lever mechanisms for mounting suspension elements, e.g. Watt linkage
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2300/00—Indexing codes relating to the type of vehicle
- B60G2300/45—Rolling frame vehicles
Definitions
- TITLE TILTING VEHICLE WITH TWO-WHEEL AXLE EQUIPPED WITH A FIRST SUSPENSION
- the present invention relates to a tilting vehicle comprising a two-wheel axle equipped with a first suspension.
- a type of known tilting vehicle presented in particular by the document FR-A1 -3082783, comprises a narrow track front axle comprising two front wheels each connected to the chassis by two superimposed triangles pivoting along axes fixed to the chassis and arranged near the longitudinal axis of the vehicle.
- Each wheel has a side suspension assembly comprising a spring and a shock absorber, with a base fixed to the lower wishbone, which provides independent suspension of the front wheels.
- Each side of the vehicle forms in front view substantially a deformable parallelogram, the suspension wishbones constituting the horizontal arms of this parallelogram.
- a transversely elongated crossbar fixed to the chassis by a pivot arranged in the longitudinal axis of the vehicle, receives at each end a joint connected to the upper support of a lateral suspension assembly comprising a spring and a shock absorber.
- An electric motor for active vehicle roll control controlled by a computer using sensors, applies an angle of rotation to the crossbar around its pivot, which acts on the side suspension assemblies with at the same time a rise in the upper support. of one and a lowering of the upper support of the other.
- This type of control makes it possible in particular to produce a closed light vehicle which does not require the driver to put their feet out when stationary to rest on the ground in order to keep the vehicle vertical.
- suspension springs with a fairly low stiffness, giving the suspension a natural oscillation frequency of between 1 Hz and 1.5 Hz. chassis, controlled by its engine, is poorly transmitted to the suspensions because of the flexibility of the springs which compress or relax easily, with little effect on the suspension wishbones to control their positions.
- the object of the present invention is in particular to avoid these problems of the prior art.
- a tilting vehicle comprising a chassis with an axle with two wheels equipped with a first suspension comprising for each wheel a lateral suspension spring connected on one side to a suspension arm of the wheel, comprising an elongated crossbar in the transverse direction of the vehicle, having a pivot aligned in the longitudinal direction of the vehicle, this lifter receiving at each end the other side of the lateral springs, and comprising a motorization for controlling the inclination of the lifter relative to the chassis, this vehicle being remarkable in that the pivot of the lifter is connected to the frame by an oscillating arm comprising a second suspension resting on this frame.
- An advantage of this vehicle is that two suspension systems arranged in series are obtained, comprising the first suspension comprising the two springs connecting the wheels to the crossbar, which may have a high stiffness, then the second suspension connecting the crossbar to the chassis by its swingarm, which may have lower stiffness.
- the oscillating arm connecting the lifter to the frame ensures simple and effective precise guidance of the lifter.
- a natural frequency of the suspension is obtained by combining these two systems in series which has sufficient total flexibility to ensure high comfort, and at the same time a high stiffness on the two springs of the first system which allows the rudder to transmit to the two independent suspensions movements in a more direct way thanks to these firmer springs.
- the tilting vehicle according to the invention may further comprise one or more of the following characteristics, which may be combined with one another.
- the oscillating arm is connected to the frame by a pivot axis arranged in the transverse direction.
- the axle can be at the front of the vehicle, the transverse pivot axis being arranged behind the axis of the wheels of this axle.
- the oscillating arm comprises at the top opposite to its pivot axis a support elongated downwards, receiving the second suspension in the lower part.
- the support of the oscillating arm comprises at its upper end a yoke receiving inside the crossbar held by its pivot.
- the second suspension comprises a single combined spring and shock absorber.
- the handset of the second suspension can be arranged substantially parallel to the vertically elongated support.
- the first suspension has an overall stiffness of between one and three times the stiffness of the second suspension.
- FIG. 1 is a perspective view of the front axle of a tilting vehicle according to the invention
- FIG. 2 is a side view of this front axle, the left wheel being removed;
- FIG. 3 is a top view of this front axle
- FIG. 4 is a front view of the vehicle, with the left wheel ready to drive down a curb.
- Figures 1, 2 and 3 show a front axle of a light vehicle comprising towards the front of this vehicle indicated by the arrow AV, on each side a wheel 2 connected to the chassis by a lower triangle 4 and an upper triangle 6 which are superimposed.
- Each triangle 4, 6 has a vertex facing the outside of the vehicle, comprising a hinge 8 for holding the pivot of wheel 2, and a side facing inwards fixed to the chassis by a central axis 10 arranged in the longitudinal direction. of the vehicle.
- the lower end 20 of the side handset 18 is fixed to the lower suspension triangle 4.
- the two side assemblies 18 constitute a first suspension of the front axle of the vehicle.
- the superimposed triangles 4, 6 remaining generally parallel, substantially form a deformable parallelogram.
- a vertically elongated support 22 comprises in the upper part two parallel lugs arranged along a transverse plane, forming a yoke receiving inside the lifter 12 held by a longitudinal pivot 14.
- the lower end of the support 22 forms a point extending towards the front, which receives above by a joint the base of a single combined suspension 26 comprising a spring and a shock absorber.
- the upper end 28 of the single handset 26 is fixed to the vehicle chassis by a link, not shown.
- An oscillating arm comprising a single suspension wishbone 30 formed in this example by a curved tube, is fixed to the chassis by two joints 36 spaced apart from each other, passing through a pivot axis 32 arranged in the transverse direction of the vehicle. , behind the axis of the front wheels 2.
- the single triangle 30 forming a plane which descends forwards, comprises a front part arranged in the transverse direction, which crosses the upper end of the box of the support 22 to be fixed to this medium.
- the first suspension can comprise a stiffness of between one and two times that of the second suspension, advantageously a stiffness equal to 1.5 times that of the second suspension.
- each side handset 18 has a stiffness of between two to four times that of the single handset 26.
- An electric motor 34 comprising a motor and a reduction gear, fixed to the single suspension triangle 30 between its two arms, in front of the transverse axis 32 of this triangle, comprises a longitudinal output shaft, not shown, connected to the pivot 14 of the lifter 12 so as to apply a torque on it.
- the electric motor 34 is controlled by a computer receiving information from vehicle operating sensors, in particular its speed, its angle of inclination, the position of the steering wheel or the transverse acceleration of the vehicle when cornering, so as to calculate in real time the inclination to be given to the rudder bar 12.
- Figure 4 shows the vehicle before descending a curb by the left wheel.
- the motorization 34 has received the instructions from the computer, itself supplied by the various sensors, and has strongly inclined the crossbar 12 to the right, so as to raise the left front wheel and at the same time lower the right front wheel which maintains the vertical frame.
- the motorization 34 then reacts in real time to cause the crossbar to pivot to the left following the arrow R, so as to obtain an instantaneous straightening of the chassis which follows the movement of lowering of the left wheel.
- the high stiffness of the springs of the side assemblies 18 gives rapid action on the angle of inclination of the chassis with limited movement of the crossbar 12.
- the 34 motorization makes it possible to accompany the natural rolling movement of the vehicle, which leans on the inside of the bend like a motorcycle.
- the springs of the side assemblies 18 have almost no compression if the ground is smooth, and the rotational movement of the crossbar 12 accompanies the inclination of the suspension arms 4, 6 and of the vehicle in the bend
- the entire suspension works, and the roll control motorization 34 acts as before.
- the power brought into play by this engine 34 is all the stronger as the speed of the vehicle decreases, because of the reduction in the gyroscopic effect of the wheels 2. Conversely, the more the speed of the vehicle increases, the more the power put involved by the tilt control motorization 34 is low.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vehicle Body Suspensions (AREA)
- Automatic Cycles, And Cycles In General (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2101452A FR3119796B1 (fr) | 2021-02-16 | 2021-02-16 | Vehicule pendulaire avec essieu a deux roues equipe d’une premiere suspension |
| PCT/FR2022/050006 WO2022175603A1 (fr) | 2021-02-16 | 2022-01-04 | Vehicule pendulaire avec essieu a deux roues equipe d'une premiere suspension |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4294652A1 true EP4294652A1 (fr) | 2023-12-27 |
Family
ID=74871710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22702498.1A Withdrawn EP4294652A1 (fr) | 2021-02-16 | 2022-01-04 | Vehicule pendulaire avec essieu a deux roues equipe d'une premiere suspension |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4294652A1 (fr) |
| FR (1) | FR3119796B1 (fr) |
| WO (1) | WO2022175603A1 (fr) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115258000A (zh) * | 2022-08-27 | 2022-11-01 | 松灵机器人(东莞)有限公司 | 行走装置 |
| CN117799735A (zh) * | 2024-02-02 | 2024-04-02 | 北京理工大学 | 一种倒三轮主动悬架窄体机器人 |
| WO2025196512A1 (fr) * | 2024-03-18 | 2025-09-25 | Marco Moroni Sagl | Véhicule à trois roues ou plus, au moins deux desdites roues étant orientables et inclinables |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2101452A5 (fr) | 1971-05-28 | 1972-03-31 | Grigorov Vasil | |
| DE602006013400D1 (de) * | 2006-01-27 | 2010-05-20 | Fondazione Torino Wireless | Seitlich neigbares Fahrzeug |
| FR3082783B1 (fr) | 2018-06-21 | 2020-07-17 | Psa Automobiles Sa | Vehicule de type pendulaire muni d'un systeme de controle actif de roulis |
-
2021
- 2021-02-16 FR FR2101452A patent/FR3119796B1/fr active Active
-
2022
- 2022-01-04 EP EP22702498.1A patent/EP4294652A1/fr not_active Withdrawn
- 2022-01-04 WO PCT/FR2022/050006 patent/WO2022175603A1/fr not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| FR3119796A1 (fr) | 2022-08-19 |
| WO2022175603A1 (fr) | 2022-08-25 |
| FR3119796B1 (fr) | 2022-12-30 |
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