EP0000979B1 - Suspension d'essieu rigide pour véhicule - Google Patents

Suspension d'essieu rigide pour véhicule Download PDF

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Publication number
EP0000979B1
EP0000979B1 EP78300217A EP78300217A EP0000979B1 EP 0000979 B1 EP0000979 B1 EP 0000979B1 EP 78300217 A EP78300217 A EP 78300217A EP 78300217 A EP78300217 A EP 78300217A EP 0000979 B1 EP0000979 B1 EP 0000979B1
Authority
EP
European Patent Office
Prior art keywords
axle
link
vehicle
chassis
pivoted
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.)
Expired
Application number
EP78300217A
Other languages
German (de)
English (en)
Other versions
EP0000979A1 (fr
Inventor
Timothy Selwyn Fry
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GKN Group Services Ltd
Original Assignee
GKN Group Services Ltd
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Filing date
Publication date
Application filed by GKN Group Services Ltd filed Critical GKN Group Services Ltd
Publication of EP0000979A1 publication Critical patent/EP0000979A1/fr
Application granted granted Critical
Publication of EP0000979B1 publication Critical patent/EP0000979B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G9/00—Resilient suspensions of a rigid axle or axle housing for two or more wheels
    • B60G9/02—Resilient suspensions of a rigid axle or axle housing for two or more wheels the axle or housing being pivotally mounted on the vehicle, e.g. the pivotal axis being parallel to the longitudinal axis of the vehicle
    • B60G9/027—Resilient suspensions of a rigid axle or axle housing for two or more wheels the axle or housing being pivotally mounted on the vehicle, e.g. the pivotal axis being parallel to the longitudinal axis of the vehicle the axle having either a triangular, a "T" or "U" shape and being directly articulated with the chassis only by its middle apex, e.g. De Dion suspension

Definitions

  • This invention relates to vehicles having sprung rigid axles.
  • the characteristics of the spring-restoring force in bump and in roll are usually dissimilar.
  • bump we mean that both ends of the axle are deflected during travel of the vehicle through substantially the same distance perpendicular to a reference plane of the body or chassis of the vehicle and by “roll” we mean that one end of the axle is deflected relative to the other in directions perpendicular to said reference plane.
  • roll we mean that one end of the axle is deflected relative to the other in directions perpendicular to said reference plane.
  • the reference plane will be horizontal.
  • the spring-restoring force will be greater than that if one end of the axle should be deflected by the same distance i.e. in roll.
  • U.S. patent specification 3,069,185 discloses an air spring front end suspension for a rigid axle, in which air springs operate on an axle beam at positions spaced inwardly from the ends thereof. Accordingly, this arrangement also will suffer from relatively different spring stiffnesses in the bump and roll displacement modes.
  • British patent specification 339,625 discloses many different arrangements of linkage for locating a rigid axle relative to a vehicle chassis, but in all such arrangements the springs are effective at positions inwardly of the axle ends, and thus also present the disadvantage above referred to. In all this prior art, there is no reference to the problem the present invention seeks to overcome.
  • a vehicle comprising a chassis, a rigid axle having a wheel at each end, and a link assembly at each end of the axle comprising a first rigid link pivotally connected at one end to the axle and a second rigid link pivotally connected at one end to the chassis, the other ends of the links being pivoted together and stabilised relative to the axle or chassis, and spring means acting on the second link resiliently to support the chassis on the axle, characterised in that each first link is pivoted to the axle substantially in the centre plane of the wheel perpendicular to its axis of rotation, such that the displacement of the spring means due to a displacement, perpendicular to a reference surface on which the vehicle stands, or a predetermined point on the wheel in roll is substantially equal to the displacement of the spring means due to an equal displacement of said point in bump.
  • each first link and the axle lies below the rotary axis of the wheel at that end of the axle, and comprises a pivotal axis extending fore and aft of the vehicle.
  • a ball joint may be used between said other ends of the links.
  • the spring means can be, for example, a coil spring acting on each second link.
  • the spring means can be torsion bars acting on the second links, e.g. by being arranged with their longitudinal axes coincident with the pivot axes of the second links on the chassis.
  • each spring means may comprise a pressure transducer acting on the second link and connected by e.g. flexible pipes to a remote spring arrangement which may be variable in effect.
  • the link assemblies may be provided solely for springing the axle and there may be separate means for controlling the location of the axle. Alternatively, the link assemblies may be part of linkages for controlling the location of the axle.
  • each link assembly may further comprise a lower rigid link pivoted at its ends to the axle and the chassis respectively about pivot axes parallel to the length of the axle, and the second link is pivoted at said one end to the chassis about an axis inclined to said center line of the vehicle said other end of the
  • the upper part of the linkage acts directly at the axle ends and thus inhibits twisting of the axle during braking.
  • the first and second links are preferably triangular and pivoted to the axle and the chassis respectively about the bases of their respective triangles and to each other at the apices opposite to said bases.
  • each second link can be a single arm pivoted about said inclined axis. The pivot bearings of such an arm, however, would have to be extremely strong.
  • axle carries steerable wheels then it is possible to control the castor angle of the wheels by varying the lengths of the sides of the triangulated first upper link.
  • One may have a series of links made of different sizes or the sides themselves may be adjustable.
  • the axle may be driven or non-driven and the wheels thereon may be steerable or not.
  • a rigid axle is indicated at 10 and carries at its end a wheel 11 having a tyre 12.
  • the wheel disc 13 is secured to a hub 14 which is rotatably mounted in wheel bearings in a support 15.
  • the support 15 is mounted in swivel bearings located in a cup 16 at the end of the axle 10. It will be noted that there is only one swivel bearing and this is mounted wholly below the rotary axis 17 of the wheel.
  • each link 19 is inclined to the centre line 18 and at its forward end is pivoted to the chassis via a ball joint 20 for pivoting movement about a pivot axis 21 parallel to the axle 10.
  • the rear end of each link 19 is pivoted by a ball joint 22 to a bracket 23 secured to the axle but inset from the end thereof.
  • the ball joint 22 pivots the rear end of each link 19 about an axis parallel to the axle 10.
  • first link 24 At each end of the axle is a first generally vertically extending link 24 and a second, upper, link 25. Each of these links is triangulated.
  • the first link comprises two limbs 24a which are pivoted by ball joints 26 to the axle at a position below the rotary axis 17 and for pivotal movement about a pivotal axis 27 parallel to the centre line 18 of the vehicle.
  • the upper end of the link 24 is pivoted by a ball joint 28 to the outer end of the link 25.
  • This link 25 comprises two limbs 29 and 30 pivoted at their inner ends by all joints 31 and 32 to the chassis, not shown, of the vehicle. It will be noted that the limbs 29 and 30 are of unequal length and as a result, the link 25 is pivoted about an axis 33 which is inclined to the fore and aft of the vehicle.
  • Figure 4 shows, at 34, the position of the tyre when the wheel is steered and it will be seen that the link 19 has to be offset to clear the wheel but the links 24 and 25 are so arranged as to give clearance to the wheel during its steering movement.
  • Springing means 35 acts on the limb 29 of link 25.
  • the springing means may be a coiled compression spring or may, as shown, be a pressure transducer which is connected by flexible pipes, not shown, to a spring means whose rate may be varied.
  • joints 26 are located in the centre plane of the wheel 11. It follows that for a given vertical displacement of a predetermined point on the wheel there will be a given displacement at the spring means 35. This will be so whether the wheel is displaced in roll or bump. This displacement of the wheel is relative to a reference plane of the vehicle chassis or body, which reference plane will, when the vehicle is standing on a horizontal surface, be horizontal. The wheel displacement perpendicular to this plane may be due either to the wheel or chassis moving in space and relative to each other.
  • the link 24 is pivoted to the axle 10 on the centre plane of the wheel. If one moves the pivoted axis 27 out-boardly away from the axle centre, then one will increase the roll stiffness, and if one moves the pivoted axis 27 inboardly towards the axle centre from the position shown there will be a decrease in roll stiffness.
  • the linkages provided by the invention enables the pitch centre of the vehicle to be determined by variations in the length and mutual relations of the links while still giving clearance to the steerable wheel as shown in Figure 4 and eliminating torsional forces in the end portions of the axle since the link 24 is pivoted to the axle adjacent the ends thereof.
  • linkage which provides the characteristic of equal spring displacement whether the wheel is displaced in roll or bump forms part of a linkage which also controls the location of the axle.
  • linkage as shown in Figure 5 or Figure 6 may be used for providing the required spring displacement characteristics while there is provided separate means for controlling the location of the axle.
  • a triangulated link 40 is pivoted to the chassis 41 of the vehicle about a fore and aft axis 42. This pivotal arrangement stabilizes the end 43 of the link 40 relative to the chassis.
  • a single link 44 is connected by ball joints 45, 46 to the axle and link 40 respectively, and springing means acts on link 40 at a position 47. The position at which link 44 is pivoted to the axle correspondence to the position at which link 24 is pivoted to the axle in the arrangement of figures 1-4.
  • a first link 50 of the same general form as the link 24 of figures 1-4 is pivoted to the axle, and a link 51 is pivoted by ball joints 52, 53 to the chassis 54 of the vehicle and link respectively.
  • Spring means acts on link 51 at 55.
  • This arrangement and the arrangement of Figure 5 provide for spring displacement characteristics as described in relation to figures 1-4, but require additional means for controlling axle location.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Body Suspensions (AREA)

Claims (4)

1. Véhicule comprenant un châssis, un essieu rigide (10) pourvu d'une roue à chaque extrémité et un ensemble de liaison prévu à chaque extrémité de l'essieu et comprenant un premier élément de liaison rigide (24, 44, 50) articulé par une première extrémité à l'essieu et un deuxième élément de liaison rigide (25, 40, 51) articulé par une première extrémité au châssis, les autres extrémités des éléments de liaison étant articulées entre elles et stabilisées par rapport à l'essieu ou au châssis, et des moyens élastiques (35) agissant élastiquement sur le deuxième élément de liaison pour faire porter le châssis sur l'essieu, caractérisé en ce que chaque premier élément de liaison (24, 44, 50) est articulé à l'essieu (10) sensiblement dans le plan central de la roue (11) perpendiculaire à l'axe de rotation de celle-ci, de sorte que le déplacement des moyens élastiques (35) sous l'effet d'un déplacement perpendiculaire à une surface de référence sur laquelle se trouve le véhicule, d'un point prédéterminé de la roue en roulis est sensiblement égal au déplacement des moyens élastiques (35) sous l'effet d'un déplacement égal dudit point en ressaut.
2. Véhicule selon la revendication 1, caractérisé en outre en ce que l'articulation (26, 45) entre chaque premier élément de liaison (24, 44, 50) et l'essieu est située au-dessous de l'axe de rotation de la roue prévue à l'extrémité correspondante de l'essieu et présente un axe d'articulation (27) s'étendant dans le sens longitudinal du véhicule.
3. Véhicule selon la revendication 2, caractérisé en outre en ce que chaque ensemble de liaison comprend un élément de liaison inférieur rigide (19) articulé par ses extrémités respectivement à l'essieu (10) et au châssis du véhicule autour d'axes d'articulation (21) parallèles à la longueur de l'essieu, et en ce que ladite première extrémité du deuxième élément de liaison (25) est articulée au châssis autour d'un axe (33) incliné relativement à l'axe principal (18) du véhicule, ladite autre extrémite du deuxième élément de liaison (25) étant articulée à ladite autre extrémité dudit premier élément de liaison (24).
4. Véhicule selon la revendication 3, caractérisé en outre en ce que le premier (24) et le deuxième (25) éléments de liaison sont triangulaires et sont articulés d'une part, à l'essieu et au châssis par la base de leur triangle respectif et d'autre part, entre eux par les sommets opposés auxdites bases.
EP78300217A 1977-08-13 1978-07-31 Suspension d'essieu rigide pour véhicule Expired EP0000979B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB3408077 1977-08-13
GB3408177 1977-08-13
GB3408077 1977-08-13
GB3408177 1977-08-13

Publications (2)

Publication Number Publication Date
EP0000979A1 EP0000979A1 (fr) 1979-03-07
EP0000979B1 true EP0000979B1 (fr) 1981-09-23

Family

ID=26262146

Family Applications (1)

Application Number Title Priority Date Filing Date
EP78300217A Expired EP0000979B1 (fr) 1977-08-13 1978-07-31 Suspension d'essieu rigide pour véhicule

Country Status (9)

Country Link
US (1) US4278270A (fr)
EP (1) EP0000979B1 (fr)
JP (1) JPS5433424A (fr)
AU (1) AU528813B2 (fr)
BR (1) BR7805157A (fr)
CA (1) CA1082234A (fr)
DE (1) DE2861114D1 (fr)
DK (1) DK356078A (fr)
ES (1) ES472503A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2589107B1 (fr) * 1985-10-29 1987-12-11 Renault Vehicules Ind Dispositif de liaison essieu-chassis, notamment pour vehicule industriel a deux essieux en tandem
NL9200797A (nl) * 1992-05-04 1993-12-01 Univ Delft Tech Massaveersysteem met rol/dompstabilisatie voor toepassing in voertuigen.
US5716042A (en) * 1996-04-15 1998-02-10 Derviller; Peter Reginald John Springing means for suspension systems
US5884925A (en) * 1998-03-17 1999-03-23 General Motors Corporation Solid axle suspension for vehicles
GB0106331D0 (en) * 2001-03-15 2001-05-02 Hendrickson Europ Ltd Vehicle axle
US7607671B2 (en) * 2004-11-23 2009-10-27 Axletech International IP Holdings LLC Light weight suspension system
GB2468302B (en) 2009-03-03 2013-04-03 Gordon Murray Design Ltd Vehicle suspension
US9469173B2 (en) 2011-11-14 2016-10-18 Gordon Murray Design Limited Vehicle suspension

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR658925A (fr) * 1929-08-07 1929-06-20 Suspension à roues indépendantes
US2092612A (en) * 1934-02-03 1937-09-07 Gen Motors Corp Automobile suspension system
GB439795A (en) * 1934-08-28 1935-12-13 Joachim Kolbe Improvements in or relating to motor vehicles
FR992744A (fr) * 1944-09-01 1951-10-22 Electrotube Solesmes Dispositif de suspension du corps d'un véhicule à un essieu rigide
US2580559A (en) * 1948-03-12 1952-01-01 Kolbe Joachim Inwardly banking vehicle employing forked banking arms
DE870647C (de) * 1951-07-26 1953-03-16 Bayerische Motoren Werke Ag Aufhaengung einer starren Hinterradachse von Kraftfahrzeugen
DE1075824B (de) * 1953-12-08 1960-02-18 Dearborn Mich Charles Samuel White (V St A) Verfahren zur Herstellung einer Kugelgelenklagerung
US3044799A (en) * 1958-01-11 1962-07-17 Daimler Benz Ag Vehicle provided with means for controlling its transverse inclination in curves
US3044790A (en) * 1959-02-24 1962-07-17 Jacobs Mfg Co Chuck and operating key with enlarged pilot
US3069185A (en) * 1960-07-14 1962-12-18 Pacific Car & Foundry Co Air spring front end suspension
US3326544A (en) * 1965-03-29 1967-06-20 Stuyvesant C Smith Shock absorber for vehicles
GB1299150A (en) * 1970-08-13 1972-12-06 Gen Motors Corp Motor vehicle suspension systems
US3692324A (en) * 1971-01-29 1972-09-19 Paul Corbin Automobile suspension
DE2505841A1 (de) * 1975-02-12 1976-08-26 Xaver Dipl Ing Bonefeld Lenkbare achse fuer flurfoerderzeuge
DE2553960A1 (de) * 1975-12-01 1977-06-02 Walter Loeffler Fahrzeugradaufhaengung

Also Published As

Publication number Publication date
US4278270A (en) 1981-07-14
CA1082234A (fr) 1980-07-22
DK356078A (da) 1979-02-14
BR7805157A (pt) 1979-05-08
EP0000979A1 (fr) 1979-03-07
AU528813B2 (en) 1983-05-12
ES472503A1 (es) 1979-03-16
AU3871178A (en) 1980-02-14
DE2861114D1 (en) 1981-12-10
JPS5433424A (en) 1979-03-12

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