WO2007003811A2 - Dispositif de restitution d'efforts au volant passif pour systeme de direction de vehicule automobile du type steer-by-wire - Google Patents
Dispositif de restitution d'efforts au volant passif pour systeme de direction de vehicule automobile du type steer-by-wire Download PDFInfo
- Publication number
- WO2007003811A2 WO2007003811A2 PCT/FR2006/050434 FR2006050434W WO2007003811A2 WO 2007003811 A2 WO2007003811 A2 WO 2007003811A2 FR 2006050434 W FR2006050434 W FR 2006050434W WO 2007003811 A2 WO2007003811 A2 WO 2007003811A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- wheel
- steering wheel
- steering
- steer
- motor vehicle
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/001—Mechanical components or aspects of steer-by-wire systems, not otherwise provided for in this maingroup
- B62D5/005—Mechanical components or aspects of steer-by-wire systems, not otherwise provided for in this maingroup means for generating torque on steering wheel or input member, e.g. feedback
Definitions
- the present invention relates generally to a passive steering force feedback device for a steering system of a motor vehicle of the steer-by-wire type.
- This device has the essential function of delivering a force feedback on the steering wheel, so that the driver finds driving sensations similar to those encountered with a motor vehicle steering system of the mechanical type.
- the front axle no longer makes it possible to transmit the feeling of effort at driver, which is nevertheless necessary to obtain a minimum driving comfort.
- an active steering force delivery device taking for example the form of a gear motor located in place of the electrical assistance used on the systems.
- steering wheel of a motor vehicle of the mechanical type is commonly used.
- the object of the invention is therefore to propose a device for restoring forces to the passive steering wheel for a steering system of a motor vehicle of the steer-by-wire type, its passive nature thus enabling it to operate without electrical energy.
- the subject of the invention is a device for restoring forces to the passive steering wheel for a steering system of a motor vehicle of the steer-by-wire type, comprising a reversible gearbox intended to be mechanically linked to a steering wheel of the steering system.
- the device further comprising two resilient return assemblies with identical stiffness and preload, each together extending along an axis of elastic assembly with two ends including a first end pivotally mounted on the wheel and a second end pivotally mounted on a fixed point of the device, the two resilient return assemblies being arranged in such a way that in projection according to a projection plane orthogonal to the wheel axis, in an equilibrium position of the wheel, the two axes of the elastic return assembly have axial symmetry.
- This passive device has the advantage of having a simple and inexpensive design, capable of delivering a driving sensation always satisfactory to the driver, even in the event of any electrical failure within the vehicle equipped with such a device.
- each elastic return assembly comprises two sliding elements nested one inside the other and respectively carrying the first and second ends of the assembly, and a spring bearing on each of the two sliding elements.
- the two second ends are pivotally mounted on the same fixed pivot of the device, oriented parallel to the wheel axis, which implies that the two elastic return assemblies then jointly have the shape of a V.
- the reversible reducer may alternatively comprise a worm meshing with a toothed sector provided on the wheel, or an epicyclic gear meshing with a toothed sector practiced on the same wheel.
- the invention also relates to a motor vehicle steering system of the steer-by-wire type, comprising a device for restoring forces to the flywheel such as that described above.
- this system may also include a force feedback device active steering.
- the passive device operates only in the event of failure or stop of the active device, or that the two devices are able to operate simultaneously.
- FIG. 1 represents a perspective view of a steer-by-wire motor vehicle steering system, this system being in the form of a first preferred embodiment of the present invention
- FIG. 2 represents an enlarged side view of the device for restoring forces to the passive steering wheel of the system shown in FIG. 1, the wheel of the device being in its equilibrium position;
- Figures 3a and 3b show partial and schematic views of the device shown in Figure 2, these views taken in projection along a projection plane orthogonal to the wheel axis illustrating the operating principle of the invention;
- Figure 4 shows a perspective view of a steer-by-wire motor vehicle steering system, which system is in the form of a second preferred embodiment of the present invention.
- the system 1 comprises a steering wheel 4, a steering column 6 and a module 8 attached to a front end of the column 6 and to ensure the function of "steer-by-wire”.
- the system 1 also comprises the device for restoring forces to the passive steering wheel 2, as well as possibly a device for restoring forces to the active steering wheel 10.
- the device 10 takes, for example, the shape a geared motor located in place of the electrical assistance used on the steering systems of a motor vehicle of the mechanical type.
- this device 2 includes everything from first a reversible gear in the form of a worm 12 mechanically linked to the steering column 6, the screw 12 meshing with a toothed sector 14 of a wheel 16. More specifically, the device 2 actually comprises a wheel 16 capable to be trained in rotation by the screw 12 along a wheel axis 18 preferably orthogonal to a vertical and longitudinal median plane of the vehicle, the screw 12 being driven by the rotational movement of the steering wheel exerted by the driver.
- the device 2 further comprises two elastic return assemblies 20a, 20b of identical stiffness and preload, each comprising two sliding elements 22, 24 fitted one inside the other and carrying respectively a first 26 and second ends. 28.
- Each assembly also comprises a spring 30, preferably of compression, one end of which bears against a shoulder 32 of the sliding element 22 and whose other end bears on a shoulder 34 of the sliding element 24 .
- the first end 26 of the assembly 20a is pivotally mounted on the wheel 16 at a point P1 thereof, while its second end 28 is pivotally mounted on a point fixed P2 device, for example on a housing 36 of the latter.
- the first end 26 of the assembly 20b is pivotally mounted on the wheel 16 at a point P3 thereof, distinct from P1, while its second end 28 is pivotally mounted on a fixed point.
- P4 of the device for example on a housing 36 of the latter.
- the two sets 20a, 20b extending respectively along resilient return assembly axes 42a, 42b are therefore arranged at V and symmetrically, preferably with respect to a vertical axis 44.
- the two elastic return assemblies 20a, 20b are arranged in such a way that they project along a projection plane P orthogonal to the wheel axle 18, in the position shown in FIG. balance of the wheel 16 where the distance between the points P1 and P2 on the one hand and P3 and P4 on the other hand is equal to dl, the two axes 42a, 42b have an axial symmetry along the vertical axis 44 superimposed on a wheel diameter 16. Still in this same projection, it can be seen that the axis of rotation 18 is preferably located overall between the group of points Pl and P3 positioned on an upper part of the wheel 16, and the group points P2 and P4.
- the first of these solutions is to bind the passive device 2 permanently to the steering column 6, and thus the steering wheel 4, so that the device 2 then follows the steering wheel 4 regardless of the electrical situation of the system 1.
- the devices 2 and 10 act simultaneously, which implies in particular to provide an oversized active device 10 so as to take into account the additional efforts to be provided which are related to the movements of the elastic assemblies 20a, 20b, and also of course to provide restitution control laws taking into account the presence of the passive device 2. It is noted that this solution has the advantage of being of relatively simple design.
- the passive device 2 replaces the active device 10 during an electrical failure or a motor stop of the same device 10.
- the clutch is preferably activated when it is not powered electrically, and therefore allows mechanically connect the passive device 2 to the steering wheel 4 only when the active device 10 is no longer electrically powered.
- a steering system 1 of a motor vehicle of the steer-by-wire type according to the invention is shown, this system being equipped with a device for restoring forces to the passive steering wheel 2 according to a second preferred embodiment of the present invention.
- the reversible gearbox takes the form of an epicycloidal gear 112 cooperating with the toothed sector of the wheel 16 of the device 2.
- various modifications may be made by the person skilled in the art to mechanisms for restitution of forces in the passive steering wheel and the steering systems of a motor vehicle which have just been described, solely as non-limiting examples.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Power Steering Mechanism (AREA)
- Steering Control In Accordance With Driving Conditions (AREA)
- Gear Transmission (AREA)
- Gears, Cams (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112006001724T DE112006001724T5 (de) | 2005-06-29 | 2006-05-12 | Passive Vorrichtung zur Wiedergabe von Kräften an das Lenkrad für ein Lenksystem für Kraftfahrzeuge vom Steer-by-Wire-Typ |
JP2008518929A JP2009500219A (ja) | 2005-06-29 | 2006-05-12 | ステアバイワイヤ形式の自動車操舵システムに使用し、力をパッシブなステアリングホイールに伝える力伝達装置 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0551823A FR2887840B1 (fr) | 2005-06-29 | 2005-06-29 | Dispositif de restitution d'efforts au volant passif pour systeme de direction de vehicule automobile du type steer-by-wire |
FR0551823 | 2005-06-29 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2007003811A2 true WO2007003811A2 (fr) | 2007-01-11 |
WO2007003811A3 WO2007003811A3 (fr) | 2007-03-08 |
Family
ID=35447663
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2006/050434 WO2007003811A2 (fr) | 2005-06-29 | 2006-05-12 | Dispositif de restitution d'efforts au volant passif pour systeme de direction de vehicule automobile du type steer-by-wire |
Country Status (4)
Country | Link |
---|---|
JP (1) | JP2009500219A (fr) |
DE (1) | DE112006001724T5 (fr) |
FR (1) | FR2887840B1 (fr) |
WO (1) | WO2007003811A2 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108290601A (zh) * | 2015-11-25 | 2018-07-17 | 蒂森克虏伯普利斯坦股份公司 | 用于线控转向式转向机构的反馈致动器 |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2911105B1 (fr) * | 2007-01-10 | 2009-02-06 | Renault Sas | Agencement pour une colonne de direction electrique de vehicule automobile |
WO2008099104A2 (fr) * | 2007-01-10 | 2008-08-21 | Renault S.A.S. | Agencement pour une colonne de direction electrique de vehicule automobile |
FR2922849B1 (fr) * | 2007-10-31 | 2009-12-11 | Renault Sas | Systeme de restitution d'efforts sur un volant de direction d'un vehicule automobile. |
FR2922848A1 (fr) * | 2007-10-31 | 2009-05-01 | Renault Sas | Systeme de restitution d'efforts sur un volant de direction d'un vehicule automobile et procede de commande d'un tel systeme. |
KR102602957B1 (ko) | 2016-12-09 | 2023-11-23 | 현대자동차주식회사 | 스티어 바이 와이어 시스템의 조향 반력장치 |
FR3137050A1 (fr) | 2022-06-27 | 2023-12-29 | Psa Automobiles Sa | SYSTÈME DE DIRECTION PERFECTIONNÉ pour vÉhicules automobiles |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2740091A1 (fr) * | 1995-10-20 | 1997-04-25 | Daimler Benz Ag | Simulateur de reaction pour systeme de commande, en particulier pour direction de vehicule |
FR2750392A1 (fr) * | 1996-06-26 | 1998-01-02 | Daimler Benz Ag | Direction, en particulier pour un vehicule automobile |
DE10159330A1 (de) * | 2000-12-15 | 2002-07-11 | Continental Teves Ag & Co Ohg | Reaktionsmomentsimulator für ein Lenkrad einer Fahrzeuglenkung |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003200843A (ja) * | 2002-01-07 | 2003-07-15 | Koyo Seiko Co Ltd | 車両用操舵装置 |
JP2004314736A (ja) * | 2003-04-15 | 2004-11-11 | Toyoda Mach Works Ltd | ステアバイワイヤシステム |
JP4124118B2 (ja) * | 2003-12-17 | 2008-07-23 | トヨタ自動車株式会社 | ステアリングシステム配備アクチュエータ |
-
2005
- 2005-06-29 FR FR0551823A patent/FR2887840B1/fr not_active Expired - Fee Related
-
2006
- 2006-05-12 DE DE112006001724T patent/DE112006001724T5/de not_active Withdrawn
- 2006-05-12 WO PCT/FR2006/050434 patent/WO2007003811A2/fr active Application Filing
- 2006-05-12 JP JP2008518929A patent/JP2009500219A/ja active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2740091A1 (fr) * | 1995-10-20 | 1997-04-25 | Daimler Benz Ag | Simulateur de reaction pour systeme de commande, en particulier pour direction de vehicule |
FR2750392A1 (fr) * | 1996-06-26 | 1998-01-02 | Daimler Benz Ag | Direction, en particulier pour un vehicule automobile |
DE10159330A1 (de) * | 2000-12-15 | 2002-07-11 | Continental Teves Ag & Co Ohg | Reaktionsmomentsimulator für ein Lenkrad einer Fahrzeuglenkung |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108290601A (zh) * | 2015-11-25 | 2018-07-17 | 蒂森克虏伯普利斯坦股份公司 | 用于线控转向式转向机构的反馈致动器 |
Also Published As
Publication number | Publication date |
---|---|
FR2887840A1 (fr) | 2007-01-05 |
JP2009500219A (ja) | 2009-01-08 |
WO2007003811A3 (fr) | 2007-03-08 |
FR2887840B1 (fr) | 2007-10-12 |
DE112006001724T5 (de) | 2008-05-15 |
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