FR2970903A1 - Suspension for use between axle and frame of e.g. ambulance, has elastically deformable blade provided with coupling unit for coupling blade to axle, where one end of blade is provided with helical spring - Google Patents

Suspension for use between axle and frame of e.g. ambulance, has elastically deformable blade provided with coupling unit for coupling blade to axle, where one end of blade is provided with helical spring Download PDF

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Publication number
FR2970903A1
FR2970903A1 FR1150626A FR1150626A FR2970903A1 FR 2970903 A1 FR2970903 A1 FR 2970903A1 FR 1150626 A FR1150626 A FR 1150626A FR 1150626 A FR1150626 A FR 1150626A FR 2970903 A1 FR2970903 A1 FR 2970903A1
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France
Prior art keywords
blade
suspension
frame
axle
spring
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Granted
Application number
FR1150626A
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French (fr)
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FR2970903B1 (en
Inventor
Raphael Morice
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MORICE CONSTRUCTEUR
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MORICE CONSTRUCTEUR
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Priority to FR1150626A priority Critical patent/FR2970903B1/en
Publication of FR2970903A1 publication Critical patent/FR2970903A1/en
Application granted granted Critical
Publication of FR2970903B1 publication Critical patent/FR2970903B1/en
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Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G11/00—Resilient suspensions characterised by arrangement, location or kind of springs
    • B60G11/32—Resilient suspensions characterised by arrangement, location or kind of springs having springs of different kinds
    • B60G11/34—Resilient suspensions characterised by arrangement, location or kind of springs having springs of different kinds including leaf springs
    • B60G11/36—Resilient suspensions characterised by arrangement, location or kind of springs having springs of different kinds including leaf springs and also helical, spiral or coil springs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G11/00—Resilient suspensions characterised by arrangement, location or kind of springs
    • B60G11/02—Resilient suspensions characterised by arrangement, location or kind of springs having leaf springs only
    • B60G11/10—Resilient suspensions characterised by arrangement, location or kind of springs having leaf springs only characterised by means specially adapted for attaching the spring to axle or sprung part of the vehicle
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
    • B62D21/11—Understructures, i.e. chassis frame on which a vehicle body may be mounted with resilient means for suspension, e.g. of wheels or engine; sub-frames for mounting engine or suspensions
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2200/00—Indexing codes relating to suspension types
    • B60G2200/10—Independent suspensions
    • B60G2200/13—Independent suspensions with longitudinal arms only
    • B60G2200/132—Independent suspensions with longitudinal arms only with a single trailing arm
    • B60G2200/1324—Independent suspensions with longitudinal arms only with a single trailing arm with a resilient trailing arm
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
    • B60G2202/10—Type of spring
    • B60G2202/11—Leaf spring
    • B60G2202/112—Leaf spring longitudinally arranged
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
    • B60G2202/10—Type of spring
    • B60G2202/12—Wound spring
    • 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
    • B60G2204/121—Mounting of leaf 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
    • B60G2204/10—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
    • B60G2204/10—Mounting of suspension elements
    • B60G2204/12—Mounting of springs or dampers
    • B60G2204/124—Mounting of coil springs
    • B60G2204/1244—Mounting of coil springs on a suspension arm
    • 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
    • B60G2204/43—Fittings, brackets or knuckles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
    • B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
    • B60G2206/60—Subframe construction
    • B60G2206/604—Subframe construction with two parallel beams connected by cross members
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2300/00—Indexing codes relating to the type of vehicle
    • B60G2300/02—Trucks; Load vehicles
    • B60G2300/024—Light trucks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2300/00—Indexing codes relating to the type of vehicle
    • B60G2300/04—Trailers

Abstract

The suspension (1) has an elastically deformable blade (2) or a flat spring, where an end (3) of the blade is provided with a connecting unit (4) for connecting the blade to a frame of a vehicle, and another end (5) of the blade is provided with a helical spring (6). The spring is provided with an attachment unit (7) for securing the spring to the frame. The blade comprises a coupling unit (8) for coupling the blade to an axle. The former end of the blade is bent in a direction of the latter end of the blade and against the spring. The spring is placed at a level of a counter elbow part (10). An independent claim is also included for a rolling vehicle.

Description

i La présente invention concerne une suspension du type positionnable entre l'essieu et le cadre de châssis d'un véhicule, ainsi qu'un véhicule équipé d'une telle suspension. The present invention relates to a suspension of the positionable type between the axle and the frame of a vehicle, and a vehicle equipped with such a suspension.

s De nombreux véhicules utilitaires, tels qu'ambulances, véhicules de transport, ou autres, exigent, pour améliorer le confort des usagers, une grande souplesse de la suspension du véhicule. Many commercial vehicles, such as ambulances, transport vehicles, and others, require a great deal of flexibility in the suspension of the vehicle to improve user comfort.

Jusqu'à présent, les solutions développées formées par des suspensions io pneumatiques ou hydro-pneumatiques sont des solutions onéreuses présentant un temps de montage important et un risque de panne élevé. Until now, the developed solutions formed by pneumatic or hydro-pneumatic suspensions are expensive solutions with a long assembly time and a high risk of failure.

Un but de la présente invention est donc de proposer une suspension du type précité dont la conception permet un temps de montage court, une fiabilité ls élevée et un faible coût lié à sa simplicité. An object of the present invention is therefore to provide a suspension of the aforementioned type whose design allows a short assembly time, high reliability and low cost related to its simplicity.

A cet effet, l'invention a pour objet une suspension du type positionnable entre l'essieu et le cadre de châssis d'un véhicule, caractérisée en ce que ladite suspension comprend au moins deux ensembles 20 formés chacun d'au moins une lame élastiquement déformable, encore appelée lame-ressort, équipée, à l'une de ses extrémités, dite première extrémité, de moyens de liaison aptes à permettre une liaison au cadre de châssis et, à son autre extrémité, dite deuxième extrémité, d'un ressort hélicoïdal pourvu de moyens de solidarisation aptes à permettre une solidarisation au cadre de 25 châssis, ladite lame étant en outre munie de moyens de couplage aptes à permettre un couplage de la lame à l'essieu. For this purpose, the subject of the invention is a suspension of the positionable type between the axle and the chassis frame of a vehicle, characterized in that the said suspension comprises at least two assemblies 20 each formed of at least one elastically resilient blade. deformable, also called spring blade, equipped, at one of its ends, said first end, connecting means adapted to allow a connection to the frame and at its other end, said second end, a spring helicoidal provided with securing means adapted to allow attachment to the frame frame, said blade being further provided with coupling means adapted to allow a coupling of the blade to the axle.

La combinaison d'une lame élastiquement déformable et d'un ressort hélicoïdal permet d'augmenter le confort de la suspension. De préférence, la lame de chaque ensemble est, depuis sa première extrémité io 25 en direction de sa deuxième extrémité, coudée puis contre-coudée, le ressort hélicoïdal étant disposé au niveau du contre-coude. The combination of an elastically deformable blade and a helical spring increases the comfort of the suspension. Preferably, the blade of each assembly is, from its first end 25 towards its second end, bent then counter-bent, the coil spring being disposed at the level of the bend.

Cette conformation géométrique de la lame permet de réduire l'encombrement 5 en hauteur de la suspension sans nuire à son confort ou à son temps de montage. This geometric conformation of the blade makes it possible to reduce the overall height of the suspension without compromising its comfort or its mounting time.

De préférence, les moyens de couplage de la lame à l'essieu sont disposés entre la première extrémité de la lame et le coude de la lame. L'essieu peut ainsi se loger dans le creux formé par le coude de la lame. A nouveau cette disposition participe à une réduction de l'encombrement en hauteur de la suspension. Preferably, the means for coupling the blade to the axle are arranged between the first end of the blade and the elbow of the blade. The axle can thus be housed in the hollow formed by the elbow of the blade. Again this arrangement contributes to a reduction in the overall height of the suspension.

15 De préférence, la lame est, au niveau de sa première extrémité, couplée à ses moyens de liaison au cadre de châssis par une liaison pivot, d'axe pivot sensiblement parallèle au plat de la lame. Preferably, the blade is, at its first end, coupled to its connection means to the frame by a pivot connection, pivot axis substantially parallel to the blade plate.

Cette disposition facilite la déformation de la lame dont la première extrémité 20 peut pivoter autour de l'axe pivot pour mieux accompagner le fléchissement de la lame sans risque de rupture. This arrangement facilitates the deformation of the blade whose first end 20 can pivot about the pivot axis to better accompany the deflection of the blade without risk of rupture.

Généralement, lesdits ensembles sont reliés entre eux par une structure de liaison. La présence d'une telle structure de liaison permet de faciliter le montage de la suspension, de réduire le temps de montage et de limiter le risque de perte d'éléments. Generally, said sets are interconnected by a connecting structure. The presence of such a connecting structure makes it easier to assemble the suspension, to reduce the assembly time and to limit the risk of loss of elements.

30 L'invention a encore pour objet un véhicule roulant du type comprenant au moins un cadre de châssis, un essieu et une suspension interposée entre cadre de châssis et essieu, caractérisé en ce que la suspension est du type précité, les ressorts hélicoïdaux s'étendant, de préférence, derrière l'essieu pris dans le sens de déplacement du véhicule. The invention also relates to a rolling vehicle of the type comprising at least one chassis frame, an axle and a suspension interposed between chassis frame and axle, characterized in that the suspension is of the aforementioned type, the coil springs s' extending, preferably, behind the axle taken in the direction of movement of the vehicle.

De préférence, le véhicule comprend en outre au moins deux vérins amortisseurs entre essieu et cadre de châssis et, de préférence, une barre de guidage latéral encore appelée barre Panhard. Preferably, the vehicle further comprises at least two damping cylinders between axle and frame and, preferably, a lateral guide bar also called Panhard bar.

L'invention sera bien comprise à la lecture de la description suivante io d'exemples de réalisation, en référence aux dessins annexés dans lesquels : The invention will be better understood on reading the following description of exemplary embodiments, with reference to the appended drawings in which:

La figure 1 représente une vue en perspective d'une suspension, conforme à l'invention, prête à être installée sur un véhicule et, FIG. 1 represents a perspective view of a suspension, according to the invention, ready to be installed on a vehicle and,

15 La figure 2 représente une vue en perspective d'une suspension, conforme à l'invention, à l'état fixée à l'essieu et au cadre de châssis d'un véhicule, essieu et cadre de châssis ayant été partiellement représentés. FIG. 2 shows a perspective view of a suspension according to the invention in the state attached to the axle and chassis frame of a vehicle, axle and chassis frame having been partially shown.

Comme mentionné ci-dessus, la suspension 1, objet de l'invention, est plus 20 particulièrement destinée à être positionnée entre l'essieu 15 et le cadre 12 de châssis, encore appelé châssis ou caisse d'un véhicule roulant. Le cadre 12 de châssis comprend généralement au moins deux longerons 13 reliés entre eux par des traverses 14. L'essieu 15 est, quant à lui, équipé de deux roues 16 de véhicule. 25 Cette suspension comprend au moins deux ensembles. Chaque ensemble est formé d'au moins une lame 2 élastiquement déformable, encore appelée lame- ressort. Cette lame-ressort est équipée à l'une de ses extrémités, dite première extrémité 3, de moyens 4 de liaison au cadre 12 de châssis et, à son autre 30 extrémité, dite deuxième extrémité 5, d'un ressort 6 hélicoïdal pourvu de moyens 7 de solidarisation au cadre 12 de châssis. La lame 2 est, en outre, 20 munie de moyens 8 de couplage de ladite lame à l'essieu 15. As mentioned above, the suspension 1 object of the invention is more particularly intended to be positioned between the axle 15 and the chassis frame 12, also called chassis or body of a rolling vehicle. The chassis frame 12 generally comprises at least two longitudinal members 13 interconnected by crosspieces 14. The axle 15 is, in turn, equipped with two wheels 16 of the vehicle. This suspension comprises at least two sets. Each set is formed of at least one elastically deformable blade 2, also called leaf spring. This leaf spring is equipped at one of its ends, said first end 3, means 4 for connection to the frame 12 of the frame and at its other end, said second end 5, a helical spring 6 provided with means 7 for securing to frame 12 of chassis. The blade 2 is further provided with means 8 for coupling said blade to the axle 15.

La lame 2 d'un ensemble est donc destinée par l'une de ses faces, en l'occurrence la face du dessous à venir, en appui sur le dessus de l'essieu 15 tandis que sa face opposée, c'est-à-dire sa face du dessus, porte le ressort 6 hélicoïdal. The blade 2 of a set is therefore intended by one of its faces, in this case the underside to come, bearing on the top of the axle 15 while its opposite face, that is to say say its face from above, carries the coil spring 6.

L'un des ensembles est de préférence le symétrique de l'autre ensemble par rapport à un plan de symétrie s'étendant sensiblement parallèlement à l'axe longitudinal moyen de la lame d'un ensemble. Chaque lame, qui est généralement formée à l'aide d'un plat métallique à la manière d'une lame-ressort métallique traditionnelle, est, depuis sa première extrémité 3 en direction de sa deuxième extrémité 5, coudée puis contre-coudée. Le ressort 6 hélicoïdal est disposé au niveau du contre-coude 10. One of the sets is preferably symmetrical to the other set with respect to a plane of symmetry extending substantially parallel to the average longitudinal axis of the blade of an assembly. Each blade, which is generally formed using a metal plate in the manner of a traditional metal leaf spring, is, from its first end 3 towards its second end 5, bent and against bent. The helical spring 6 is disposed at the level of the bend 10.

Les moyens 8 de couplage de la lame 2 à l'essieu 15 sont disposés entre la première extrémité 3 de la lame 2 et le coude 9 de la lame 2. The means 8 for coupling the blade 2 to the axle 15 are arranged between the first end 3 of the blade 2 and the elbow 9 of the blade 2.

L'essieu 15 peut venir, quant à lui, se loger dans le creux du coude 9. En variante, la lame pourrait être une forme droite ou sensiblement droite, fixée sous l'essieu au niveau de la face du dessous de l'essieu. The axle 15 can come, meanwhile, to be housed in the hollow of the elbow 9. Alternatively, the blade could be a straight or substantially straight shape, fixed under the axle at the underside of the axle .

De préférence, la lame 2 est au niveau de sa première extrémité 3, couplée à 25 ses moyens 4 de liaison au cadre 12 de châssis par une liaison pivot 17, d'axe pivot sensiblement parallèle au plat de la lame 2. Preferably, the blade 2 is at its first end 3, coupled to its means 4 connecting to the chassis frame 12 by a pivot connection 17, of pivot axis substantially parallel to the plate of the blade 2.

Les moyens 4 de liaison de la lame au cadre 12 de châssis sont ici formés par une chape comportant deux flasques reliés entre eux par l'axe pivot. Chaque 30 flasque est solidarisable par exemple par soudure ou par vissage au cadre 12 de châssis. The means 4 for connecting the blade to the chassis frame 12 are here formed by a yoke having two flanges interconnected by the pivot axis. Each flange can be fixed, for example by welding or screwing to frame 12.

Pour faciliter le montage de la suspension, lesdits ensembles sont reliés entre eux par une structure 11 de liaison. To facilitate the mounting of the suspension, said assemblies are interconnected by a connecting structure 11.

De préférence, la structure 11 de liaison, formée de préférence d'au moins deux traverses sensiblement parallèles, est disposée entre les moyens 7 de solidarisation de chaque ressort 6 hélicoïdal au cadre 12 de châssis et relie lesdits moyens 7 entre eux. Pour chaque ensemble, les moyens 7 de solidarisation du ressort 6 hélicoïdal au cadre 12 de châssis comprennent au moins un étrier 7A apte à venir, par le dessous, coiffer un longeron 13 dudit cadre 12 de châssis. Chaque étrier 7A, est, au niveau de son flanc externe opposé à celui tourné vers l'autre ensemble, muni d'une platine 7B formant une aile audit flanc, l'extrémité du ressort 6 hélicoïdal, opposée à celle fixée à la lame 2, étant fixée à ladite platine 7B. Preferably, the connecting structure 11, preferably formed by at least two substantially parallel crosspieces, is disposed between the means 7 for securing each helical spring 6 to the chassis frame 12 and connects said means 7 to each other. For each set, the means 7 for securing the helical spring 6 to the chassis frame 12 comprise at least one bracket 7A adapted to come from below, cover a spar 13 of said frame 12. Each yoke 7A is, at its outer side opposite to that facing the other assembly, provided with a plate 7B forming a wing to said flank, the end of the helical spring 6, opposite that fixed to the blade 2 , being fixed to said plate 7B.

Les traverses de la structure 11 de liaison relient entre eux les flancs intérieurs des étriers. Lesdites traverses sont donc positionnées dans l'épaisseur des étriers réduisant ainsi l'encombrement en hauteur de la structure 11 de liaison. The cross members of the connecting structure 11 connect the inner flanks of the stirrups to each other. Said sleepers are therefore positioned in the thickness of the stirrups thus reducing the overall height of the connecting structure 11.

Le montage d'une telle suspension sur un véhicule est extrêmement aisé. Il suffit de fixer au cadre 12 de châssis la première extrémité de la lame 2 de chaque ensemble à l'aide des moyens 4 de liaison équipant ladite extrémité, et de fixer les moyens 7 de solidarisation équipant le ressort 6 hélicoïdal au cadre 12 de châssis. L'essieu peut ensuite peut être fixé à la lame à l'aide de moyens 8 de couplage, tels qu'une platine de liaison, équipant le dessous de la lame. The mounting of such a suspension on a vehicle is extremely easy. It is sufficient to fix the frame 12 of the frame the first end of the blade 2 of each assembly using the connecting means 4 equipping said end, and to fix the securing means 7 equipping the coil spring 6 to the frame 12 of the frame . The axle can then be attached to the blade using coupling means 8, such as a connecting plate, equipping the underside of the blade.

A l'état fixé de la suspension au véhicule, les ressorts 6 hélicoïdaux s'étendent, de préférence, derrière l'essieu 15 pris dans le sens de déplacement du véhicule. L'essieu est logé dans le creux du coude de la lame et la première extrémité de la lame est enroulée autour de l'axe pivot de liaison de la lame à ses moyens de couplage. La lame tend ainsi à tourner autour dudit axe au cours de sa déformation, notamment par fléchissement. In the fixed state of the suspension to the vehicle, the coil springs 6 extend, preferably, behind the axle 15 taken in the direction of movement of the vehicle. The axle is housed in the hollow of the elbow of the blade and the first end of the blade is wound around the axis connecting pivot of the blade to its coupling means. The blade thus tends to rotate about said axis during its deformation, in particular by bending.

Pour parfaire la construction, le véhicule comprend en outre au moins deux vérins amortisseurs (non représentés) entre essieu et cadre de châssis et, de s préférence, une barre 18 de guidage latéral encore appelée barre Panhard. To perfect the construction, the vehicle further comprises at least two damping cylinders (not shown) between the axle and chassis frame and, preferably, a lateral guide bar 18 also called Panhard bar.

La simplicité du montage décrit ci-dessus permet un montage en un temps court de la suspension. La simplicité de la conception et des composants de la suspension limite le risque de panne ou de défaillance. io The simplicity of the assembly described above allows a mounting in a short time of the suspension. The simplicity of the design and components of the suspension limit the risk of failure or failure. io

Claims (4)

REVENDICATIONS1. Suspension (1) du type positionnable entre l'essieu (15) et le cadre (12) de 5 châssis d'un véhicule, caractérisée en ce que ladite suspension (1) comprend au moins deux ensembles formés chacun d'au moins une lame (2) élastiquement déformable, encore appelée lame-ressort, équipée, à l'une de ses extrémités, dite première extrémité (3), de moyens (4) de liaison aptes à permettre une liaison au cadre 10 (12) de châssis et, à son autre extrémité, dite deuxième extrémité (5), d'un ressort (6) hélicoïdal pourvu de moyens (7) de solidarisation aptes à permettre une solidarisation au cadre (12) de châssis, ladite lame (2) étant en outre munie de moyens (8) de couplage aptes à permettre un couplage de la lame (2) à l'essieu (15). 15 REVENDICATIONS1. Suspension (1) of the positionable type between the axle (15) and the chassis frame (12) of a vehicle, characterized in that said suspension (1) comprises at least two assemblies each formed of at least one blade (2) elastically deformable, also called leaf-spring, equipped, at one of its ends, said first end (3), means (4) of connection adapted to allow a connection to the frame 10 (12) and , at its other end, said second end (5), a coil spring (6) provided with means (7) for fastening suitable to allow attachment to the frame (12) frame, said blade (2) being furthermore provided with coupling means (8) adapted to allow a coupling of the blade (2) to the axle (15). 15 2. Suspension (1) selon la revendication 1, caractérisée en ce que la lame (2) de chaque ensemble est, depuis sa première extrémité (3) en direction de sa deuxième extrémité (5), coudée puis contre-coudée, le ressort (6) hélicoïdal étant disposé au niveau du contre- 20 coude (10). 2. Suspension (1) according to claim 1, characterized in that the blade (2) of each set is, from its first end (3) towards its second end (5), bent and against bent, the spring (6) helical being disposed at the counter-elbow (10). 3. Suspension (1) selon la revendication 2, caractérisée en ce que les moyens (8) de couplage de la lame (2) à l'essieu (15) sont disposés entre la première extrémité (3) de la lame (2) et le coude (9) 25 de la lame (2). 3. Suspension (1) according to claim 2, characterized in that the means (8) for coupling the blade (2) to the axle (15) are arranged between the first end (3) of the blade (2) and the elbow (9) of the blade (2). 4. Suspension (1) selon l'une des revendications précédentes, caractérisée en ce que la lame (2) est, au niveau de sa première extrémité (3), couplée à ses moyens (4) de liaison au cadre (12) de châssis par une liaison 30 pivot (17), d'axe pivot sensiblement parallèle au plat de la lame (2). 7 . Suspension (1) selon l'une des revendications précédentes, caractérisée en ce que lesdits ensembles sont reliés entre eux par une structure (11) de liaison. s 6. Suspension (1) selon la revendication 5, caractérisée en ce que la structure (11) de liaison, formée de préférence d'au moins deux traverses sensiblement parallèles, est disposée entre les moyens (7) de solidarisation de chaque ressort (6) hélicoïdal au cadre (12) de châssis et relie lesdits moyens (7) de solidarisation entre eux. io 7. Suspension (1) selon l'une des revendications 5 ou 6, caractérisée en ce que, pour chaque ensemble, les moyens (7) de solidarisation du ressort (6) hélicoïdal au cadre (12) de châssis comprennent au moins un étrier (7A) apte à venir, par le dessous, coiffer un longeron (13) ls dudit cadre (12) de châssis. 8. Suspension (1) selon la revendication 7, caractérisée en ce que chaque étrier (7A), est, au niveau de son flanc externe opposé à celui tourné vers l'autre ensemble, muni d'une platine (7B) formant 20 une aile audit flanc, l'extrémité du ressort (6) hélicoïdal, opposée à celle fixée à la lame (2) étant fixée à ladite platine (7B). 9. Véhicule roulant du type comprenant au moins un cadre (12) de châssis, un essieu (15) et une suspension (1) interposée entre cadre (12) de châssis et 25 essieu (15), caractérisé en ce que la suspension (1) est conforme à l'une des revendications 1 à 8, les ressorts (6) hélicoïdaux s'étendant, de préférence, derrière l'essieu (15) pris dans le sens de déplacement du véhicule. 3o 10. Véhicule selon la revendication 9, caractérisé en ce qu'il comprend en outre au moins deux vérins amortisseurs entre essieu et cadre de châssis et,de préférence, une barre (18) de guidage latéral encore appelée barre Panhard. 4. Suspension (1) according to one of the preceding claims, characterized in that the blade (2) is, at its first end (3), coupled to its means (4) for connection to the frame (12) of frame by a pivot connection (17), pivot axis substantially parallel to the blade plate (2). 7. Suspension (1) according to one of the preceding claims, characterized in that said sets are interconnected by a structure (11) of connection. 6. Suspension (1) according to claim 5, characterized in that the structure (11) of connection, preferably formed by at least two substantially parallel crosspieces, is disposed between the means (7) for securing each spring ( 6) helical to the chassis frame (12) and connects said connecting means (7) to each other. 7. Suspension (1) according to one of claims 5 or 6, characterized in that, for each set, the means (7) for securing the coil spring (6) to the chassis frame (12) comprise at least one stirrup (7A) adapted to come from below, cover a spar (13) 1s of said frame (12) frame. 8. Suspension (1) according to claim 7, characterized in that each yoke (7A) is, at its outer side opposite to that facing the other assembly, provided with a plate (7B) forming a wing to said flank, the end of the coil spring (6), opposite that fixed to the blade (2) being fixed to said plate (7B). 9. A rolling vehicle of the type comprising at least one chassis frame (12), an axle (15) and a suspension (1) interposed between the chassis frame (12) and the axle (15), characterized in that the suspension ( 1) is according to one of claims 1 to 8, the coil springs (6) extending preferably behind the axle (15) taken in the direction of movement of the vehicle. 10. Vehicle according to claim 9, characterized in that it further comprises at least two damping cylinders between axle and frame and, preferably, a bar (18) for lateral guidance also called Panhard bar.
FR1150626A 2011-01-27 2011-01-27 SUSPENSION OF THE POSITIONABLE TYPE BETWEEN THE AXLE AND THE FRAME OF A VEHICLE, AND A VEHICLE EQUIPPED WITH SUCH A SUSPENSION Active FR2970903B1 (en)

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Publication number Priority date Publication date Assignee Title
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US10933708B2 (en) 2017-12-04 2021-03-02 Ford Global Technologies, Llc Vehicle suspension unit
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