WO2009077540A1 - Châssis de véhicule automobile - Google Patents

Châssis de véhicule automobile Download PDF

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Publication number
WO2009077540A1
WO2009077540A1 PCT/EP2008/067661 EP2008067661W WO2009077540A1 WO 2009077540 A1 WO2009077540 A1 WO 2009077540A1 EP 2008067661 W EP2008067661 W EP 2008067661W WO 2009077540 A1 WO2009077540 A1 WO 2009077540A1
Authority
WO
WIPO (PCT)
Prior art keywords
chassis
motor vehicle
substantially closed
loop
longitudinal members
Prior art date
Application number
PCT/EP2008/067661
Other languages
English (en)
Inventor
Romano Artioli
Original Assignee
Automotive Research Technology & Style Societa A Responsabilita Limitata
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 Automotive Research Technology & Style Societa A Responsabilita Limitata filed Critical Automotive Research Technology & Style Societa A Responsabilita Limitata
Publication of WO2009077540A1 publication Critical patent/WO2009077540A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D31/00—Superstructures for passenger vehicles
    • B62D31/003—Superstructures for passenger vehicles compact cars, e.g. city cars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D23/00—Combined superstructure and frame, i.e. monocoque constructions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D39/00—Vehicle bodies not otherwise provided for, e.g. safety vehicles

Definitions

  • the present invention relates to a motor vehicle chassis according to the preamble of claim 1, particularly a motor vehicle chassis of such a compact size as to be particularly suitable for urban use.
  • motor vehicle is intended to indicate a vehicle that can carry at least one passenger and be stable on the ground, both when parked and running, without requiring any external support means, such as kickstands and the like.
  • motor vehicles are: a four-wheel motor vehicle or a three-wheel vehicle with wheels arranged along two different staggered axes, in which one axis has two appropriately spaced wheels.
  • the need is increasingly felt of solving or at least mitigating the congestion problems associated with vehicle circulation and parking. This problem is particularly serious when coming closer to downtown. Particularly, in inner cities, roads are so narrow that smooth vehicle circulation and parking are hindered.
  • This invention is based on the problem of providing a motor vehicle chassis, particularly for a compact motor vehicle, that has such structural and functional characteristics as to fulfill the above needs, while obviating the above prior art drawbacks.
  • FIG. 1 is a simplified perspective view, with some missing parts, of a motor vehicle having a chassis according to the present invention
  • - Figures 2 and 3 are side and top planar views respectively of the vehicle of Figure 1;
  • FIG. 4 is a bottom view of the vehicle of Figure 1;
  • FIG. 5 and 6 are two respective views of the load bearing structure of the vehicle of Figure 1; - Figures 7, 8 and 9 are perspective views of the chassis of the vehicle of
  • Figure 1 shows a side member of the chassis of the vehicle of Figure 1;
  • FIG. 11 is the top view of Figure 3, with additional parts omitted.
  • numeral 1 generally designates a chassis of the invention for a motor vehicle 2.
  • the motor vehicle 2 further comprises:
  • a steering unit 5 comprising a steering wheel 6 for driving the steerable front wheels 3;
  • the motor vehicle 2 further has additional components that typically form motor vehicle equipment. These additional components, which may be of either mechanical or hydraulic, electric or electronic type, are known per se and will not be listed or described herein.
  • the motor vehicle 2 is of small size, i.e. has a longitudinal dimension A of the order of 200 ⁇ 250 cm, preferably about
  • the motor vehicle 2 extends in a longitudinal direction X-X from a front end to a rear end, as seen in the straight motor vehicle direction.
  • the motor vehicle 2 has a back seat 8 for receiving a passenger P.
  • the back seat 8 is aligned behind the front seat 7, as seen in the above mentioned longitudinal direction X-X.
  • the front seat 7 and the back seat 8 are aligned along the median longitudinal line of the motor vehicle 2, i.e. along the longitudinal center line of the motor vehicle.
  • the back seat 8 is oriented in the direction of the motor vehicle, for optimized utilization of the interior space.
  • the passenger P will have the legs slightly set apart, straddling the driver D, and extending along the sides of the motor vehicle 2 to the front end.
  • the front seat 7 and the back seat 8 have a backrest, and are configured as armchairs.
  • the interior compartment of the motor vehicle 2 can receive two seats, 7 and 8, for two users, a driver D and a passenger P, in tandem arrangement, which can comfortably and safely receive the driver D and the passenger P.
  • the back seat 7 can slide along longitudinal guides to a forward position for the passenger P to get on and off the back seat 8.
  • the front seat 7 may be also folded forward to the front of the motor vehicle, with the whole seat or only the backrest thereof being collapsible.
  • the back seat is at a higher level than the front seat 7. Therefore, as mentioned above, the passenger may comfortably sit on the back seat 8 with the legs straddling the front seat 7.
  • said motor means include one or more electric electric motors 14 for rotatably driving one or more wheels 3.
  • the motor vehicle 2 includes a electric motor 14, which is located between the front wheels 3, and is kinematically connected to such wheels for driving them into rotation and acting as an electrodynamic brake upon them.
  • the motor vehicle 2 has a plurality of accumulators 15, which are electrically connected with each other and with the electric motors 14.
  • the motor vehicle 2 may be equipped with an additional electric motor
  • the vehicle has a motor generator which is designed to act as a power source for supplying power to the electric motors 14 and/or charging the accumulators 15.
  • the motor generator is located at the back of the motor vehicle 2, substantially between the rear wheels 3, and comprises a current generator 16 and an internal combustion engine 18 for driving the current generator 16.
  • the electric generator 16 is rotatably connected with the drive shaft of the internal combustion engine 18 by motion transfer means, such as a belt drive or a continuously variable transmission (CVT).
  • the motor vehicle 2 further comprises control means for electrically and selectively coupling the accumulators to the electric motor 14 and/or the current generator 16.
  • the internal combustion engine 18 is a four-stroke cycle engine having a contra-rotating balance shaft and may be powered either with gas, such as methane or GPL, or with liquid fuel of fossil and/or vegetable origin such as gasoline, diesel oil, rapeseed oil and so forth.
  • the motor vehicle 2 has a tank 17 for fossil fuel, and an additional tank 20 adapted to contain pressurized gas.
  • the motor vehicle 2 has no drive means for operably connecting the internal combustion engine 18 with the wheels 3, the driving wheels being powered by their respective electric motors.
  • This arrangement allows the internal combustion engine 18 to be located in any preferred position, regardless of the position of the driving wheels and without providing a mechanical transmission between the internal combustion engine and the wheels.
  • the internal combustion engine 18 is only used to drive the electric generator 16 into rotation, to ensure generation of the power required for charging the accumulators and/or driving the electric motors.
  • the size of the mechanical transmission means required for transmitting torque from the drive shaft of the electric motor to the driving wheels may be minimized.
  • the chassis 1 of the motor vehicle 2 has a front portion Ia for supporting the front wheels 3, a rear portion Ib for supporting the rear wheels and a central portion Ic which forms a floor for the motor vehicle 2.
  • the central portion Ic has a substantially closed- loop peripheral structure delimited by a peripheral wall 38 of predetermined height H, to define a safety compartment V in said floor, for safely accommodating heavy components of the motor vehicle 2, mainly the accumulators 15 and the pressurized gas tank 20.
  • the wall 38 acts as a retention member for effectively accommodating said heavy components of the motor vehicle 2, particularly in case of collision.
  • the wall 38 has a height H of 8 cm or more and not above 15 cm, preferably 10 cm.
  • the wall 38 is formed of a specially bent sheet profile, with localized reinforced elements associated therewith, e.g. at the corners or connections of the various parts.
  • the profile that forms the wall has a substantially C- shaped cross section.
  • the substantially closed-loop structure is closed by a lower panel at its bottom and by an upper panel at its top.
  • Each of the lower and upper panels comprises a steel plate.
  • This substantially closed-loop structure has two opposed rectilinear sides 9, connected by respective front and rear end walls 10, 11.
  • the front end wall 10 is connected to the end of the opposed sides 9 to avoid any sharp edges.
  • the front end wall 10 and the two sides 9 may be formed from a single profile by bending, although such walls may be also formed by joining several profile sections.
  • the opposed rectilinear sides 9 and the front end wall 10 are oriented in such a manner that the respective open profile of the C faces towards the interior of the safety compartment V.
  • the rear portion Ib of the chassis has an end portion 12 at a higher level than said central portion Ic and two inclined sides 13 for connecting the end portion 12 to the central portion Ic.
  • these inclined sides 13 are connected to the substantially closed-loop structure at its rectilinear sides 9.
  • the end portion 12 of the rear portion Ib of the chassis 1 is vertically offset upwards by a predetermined length L. This provides effective protection to the passenger P in case of collision.
  • a rectilinear side 9 of the portion Ic defines a substantially S-shaped profile with its respective inclined side 13 and the end portion.
  • the motor-generator unit comprising the current generator 16 and the internal combustion engine 18 may hang from the portion Ib of the chassis 1.
  • the driving unit and the rear generator that hang from the chassis are propelled to the ground.
  • this motor-generator unit may slip under the floor formed by the central portion Ic of the chassis 1, and is facilitated therefor in that the rear end wall 11 may be conveniently inclined to the vertical to converge downwards relative to the front end portion 10.
  • the front portion Ia of the chassis has two longitudinal members 23 projecting from said substantially closed-loop peripheral structure.
  • the two longitudinal members 23 extend parallel to the two opposed rectilinear sides 9 of the central portion Ic of the chassis 1, i.e. in said longitudinal direction. More particularly, the longitudinal members 23 overhang by a front portion 23a the front end wall 10 of the substantially closed-loop peripheral structure.
  • the two longitudinal members 23 extend into the substantially closed-loop peripheral structure by an intermediate portion 23b, so that said safety compartment V may be divided into multiple internal partitions. Furthermore, the two longitudinal members 23 extend towards the back of the vehicle beyond the rear end wall 11 by a rear portion 23c, where the distance between the two longitudinal members 23 increases, as shown in Figures 8 and 10. Essentially, the rear portions 23c of the longitudinal members 23 are more external to the vehicle 2 than the front and central portions 23 a, 23 c, wherefore they can be conveniently used for supporting the rear wheels 3.
  • each longitudinal member 23 has a transverse surface 24 whereby it abuts against the outer wall of the front end wall 10.
  • the two longitudinal members 23 are at least partially higher than said substantially closed-loop sturdy structure. Furthermore, the chassis 1 has a connecting cross member 25 which extends between the opposed rectilinear sides 9 to define a partition, within said safety compartment V, against the front end wall 10, in which the pressurized gas tank 20 may be received in a lying position. It shall be noted that the two longitudinal members extending above the tank 20 also have an effective downward retaining action on the tank 20.
  • the longitudinal guides of the front seat 7 are affixed to the floor formed by the central portion Ic of the chassis 1. Namely, the longitudinal guides of the front seat 7 are affixed to the longitudinal members 23.
  • the motor vehicle 2 has at least one photovoltaic panel, for generating electric power and charging the accumulators.
  • this photovoltaic panel is integrated in the roof of the motor vehicle 2.
  • the vehicle chassis of the present invention fulfills the above mentioned needs and also obviates prior art drawbacks as set out in the introduction of this disclosure.
  • the chassis of the invention provides a shock-resistant structure whose closed-loop feature provides a housing at the lowest part of the vehicle, for receiving heavy components of the motor vehicle, such as the accumulators and the pressurized gas container. As a result, should a collision occur, these components would be held against said substantially closed-loop sturdy structure, and be thus prevented from being a hazard for the users of the motor vehicle.
  • the low and central position of these components provides the remarkable advantage of maintaining a low center of mass for the motor vehicle, in spite of a normal height from the ground and adds stability to the vehicle. Also, in case of collision, the presence of these heavy components within the substantially closed-loop sturdy structure adds resistance to deformation of the central part of the frame.
  • the presence of the two longitudinal members overhanging said substantially closed-loop sturdy structure can dissipate kinetic energy to the central part of the chassis.
  • the chassis of the invention has such a structure that, in case of front-end collision, the important masses of the motor vehicle are discharged in the longitudinal direction of extension of the two longitudinal members subjected to deformation, while the driving unit and the rear generator hanging from the chassis are propelled to the ground.
  • the weight of the driver and the passenger also discharge through the crash structure of the chassis 1 onto the two longitudinal members.
  • the chassis of the present invention allows impact forces to flow in the longitudinal direction, with no stress deviation.
  • Another advantage of the vehicle chassis of the present invention is the ability of achieving the required rigidity and strength with a low- weight structure.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Automatic Cycles, And Cycles In General (AREA)
  • Vehicle Body Suspensions (AREA)
  • Body Structure For Vehicles (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)

Abstract

La présente invention se rapporte à un châssis pour véhicule automobile comprenant une partie centrale (Ic) qui définit un plancher dudit véhicule automobile (2) ayant une structure périphérique sensiblement à boucle fermée délimitée par une paroi périphérique (38) d'une hauteur (H) prédéterminée, de sorte qu'un compartiment sécurisé (V) soit défini dans la partie centrale (Ic) du châssis, pour loger sans problème de lourds composants (5, 20) du véhicule automobile (2).
PCT/EP2008/067661 2007-12-17 2008-12-16 Châssis de véhicule automobile WO2009077540A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI2007A002354 2007-12-17
ITMI20072354 ITMI20072354A1 (it) 2007-12-17 2007-12-17 Telaio di autoveicolo

Publications (1)

Publication Number Publication Date
WO2009077540A1 true WO2009077540A1 (fr) 2009-06-25

Family

ID=40315593

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/067661 WO2009077540A1 (fr) 2007-12-17 2008-12-16 Châssis de véhicule automobile

Country Status (2)

Country Link
IT (1) ITMI20072354A1 (fr)
WO (1) WO2009077540A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013185917A1 (fr) * 2012-06-13 2013-12-19 Audi Ag Structure porteuse pour carrosserie de véhicule
DE102012019724A1 (de) * 2012-10-10 2014-04-10 TGM GmbH Software und Dienstleistungen Fahrzeugstruktur

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102687163B1 (ko) * 2019-07-24 2024-07-19 현대자동차주식회사 전방 차체 구조

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0646516A1 (fr) * 1993-10-05 1995-04-05 SMH Management Services AG Châssis pour véhicule, notamment pour véhicule automobile
WO2003070543A1 (fr) * 2001-11-09 2003-08-28 Magna International, Inc Soubassement modulaire pour vehicule moteur
US20040149500A1 (en) * 2003-02-05 2004-08-05 Chernoff Adrian B. Pre-engineered frame portion and method of use therefor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0646516A1 (fr) * 1993-10-05 1995-04-05 SMH Management Services AG Châssis pour véhicule, notamment pour véhicule automobile
WO2003070543A1 (fr) * 2001-11-09 2003-08-28 Magna International, Inc Soubassement modulaire pour vehicule moteur
US20040149500A1 (en) * 2003-02-05 2004-08-05 Chernoff Adrian B. Pre-engineered frame portion and method of use therefor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013185917A1 (fr) * 2012-06-13 2013-12-19 Audi Ag Structure porteuse pour carrosserie de véhicule
US9381954B2 (en) 2012-06-13 2016-07-05 Audi Ag Body supporting structure for a vehicle body
DE102012019724A1 (de) * 2012-10-10 2014-04-10 TGM GmbH Software und Dienstleistungen Fahrzeugstruktur

Also Published As

Publication number Publication date
ITMI20072354A1 (it) 2009-06-18

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