FR2864471A1 - Wheel shaft for use in vehicle, has crosspiece connecting two longitudinal arms, where each arm has side rail whose front portion has bent portion extending about specific angle - Google Patents
Wheel shaft for use in vehicle, has crosspiece connecting two longitudinal arms, where each arm has side rail whose front portion has bent portion extending about specific angle Download PDFInfo
- Publication number
- FR2864471A1 FR2864471A1 FR0315515A FR0315515A FR2864471A1 FR 2864471 A1 FR2864471 A1 FR 2864471A1 FR 0315515 A FR0315515 A FR 0315515A FR 0315515 A FR0315515 A FR 0315515A FR 2864471 A1 FR2864471 A1 FR 2864471A1
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- FR
- France
- Prior art keywords
- spar
- axle
- arm
- wheel support
- longitudinal arms
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Classifications
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- 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
- B60G21/051—Trailing arm twist beam axles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G7/00—Pivoted suspension arms; Accessories thereof
- B60G7/008—Attaching arms to unsprung part of vehicle
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- 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
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- 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
- B60G2202/13—Torsion spring
- B60G2202/136—Twist-beam type arrangement
- B60G2202/1362—Twist-beam type arrangement including a second torsional element, e.g. second beam, stabiliser bar or tube
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- 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
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- 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
- B60G2204/1246—Mounting of coil springs on twist beam axles
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- 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
- B60G2204/14—Mounting of suspension arms
- B60G2204/148—Mounting of suspension arms on the unsprung part of the vehicle, e.g. wheel knuckle or rigid axle
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- 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
- B60G2206/10—Constructional features of arms
- B60G2206/11—Constructional features of arms the arm being a radius or track or torque or steering rod or stabiliser end link
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- 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
- B60G2206/20—Constructional features of semi-rigid axles, e.g. twist beam type axles
-
- 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
- B60G2206/30—Constructional features of rigid axles
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- 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
- B60G2206/50—Constructional features of wheel supports or knuckles, e.g. steering knuckles, spindle attachments
Abstract
Description
2864471 12864471 1
Essieu souple à bras longitudinaux cintrés, bras longitudinal et véhicule correspondants. Flexible axle with bent longitudinal arms, corresponding longitudinal arm and vehicle.
Le domaine de l'invention est celui des véhicules automobiles. Plus précisément, l'invention concerne les essieux souples pour les véhicules automobiles. The field of the invention is that of motor vehicles. More specifically, the invention relates to flexible axles for motor vehicles.
On rappelle qu'on désigne généralement par essieu souple un essieu conçu de façon à former un élément torsible entre deux roues. It is recalled that generally refers to a flexible axle axle designed to form a torsion element between two wheels.
Classiquement, un essieu souple comprend deux bras longitudinaux portant chacun un support de montage de roue et reliés par un élément de liaison transversale appelé traverse ou profil. Conventionally, a flexible axle comprises two longitudinal arms each carrying a wheel mounting bracket and connected by a transverse connecting member called cross member or profile.
Les bras longitudinaux sont généralement associés à différents organes fonctionnels tels que notamment: des moyens supportant une extrémité de ressort de suspension, ces moyens supports étant désignés par le terme de coupelle de ressort (une telle coupelle présente le plus souvent une surface dans laquelle est formé un téton de centrage formant moyens de positionnement et/ou de maintien en position du ressort de suspension) ; des moyens coopérant avec des amortisseurs; des douilles d'accouplement de l'essieu au châssis du véhicule, permettant le montage à pivotement des bras longitudinaux par rapport au châssis. The longitudinal arms are generally associated with various functional members such as in particular: means supporting a suspension spring end, said support means being designated by the term spring cup (such a cup has most often a surface in which is formed a centering stud forming means for positioning and / or holding the suspension spring in position); means cooperating with dampers; coupling sleeves from the axle to the vehicle frame, allowing pivotal mounting of the longitudinal arms relative to the chassis.
Au cours de la conception d'un essieu, deux grandeurs sont, entre autres, considérées pour apprécier la qualité de l'essieu: la flexion et la torsion. During the design of an axle, two sizes are considered, among others, to assess the quality of the axle: bending and torsion.
Le concept, désormais répandu, des essieux souples consiste à concilier une forte raideur en flexion et une relative souplesse en torsion. En général, c'est par la géométrie de la section de la traverse, via ses inerties de flexion et de torsion, qu'est obtenu le compromis souhaité entre raideur en flexion et souplesse (relative) de torsion. The concept, now widespread, of flexible axles is to reconcile a high stiffness in bending and relative flexibility in torsion. In general, it is through the geometry of the section of the cross member, via its bending and torsional inertia, that the desired compromise between flexural stiffness and (relative) torsional flexibility is achieved.
Une autre considération importante lors de la conception de tels essieux 2864471 2 concerne l'encombrement et la répartition spatiale de l'ensemble formé par l'essieu et par les différents organes (tels que ceux mentionnés précédemment) portés par l'essieu. Another important consideration when designing such axles 2864471 2 concerns the size and spatial distribution of the assembly formed by the axle and by the various members (such as those mentioned above) carried by the axle.
En effet, les cahiers des charges confiés par les constructeurs de véhicules automobiles aux concepteurs d'essieux peuvent varier notablement. Ainsi, un grand nombre de paramètres liés au véhicule luimême peuvent influer sur la conception des essieux, tels que notamment: la largeur du véhicule; la longueur du véhicule; la répartition, sous la caisse du véhicule, des organes autres que ceux portés par l'essieu; Selon les paramètres définis par le constructeur, on comprend aisément que le concepteur d'essieux dispose d'une marge de manoeuvre dimensionnelle plus ou moins importante en fonction du gabarit du véhicule. Indeed, the specifications given by the motor vehicle manufacturers to the axle designers can vary considerably. Thus, a large number of parameters related to the vehicle itself can affect the design of the axles, such as in particular: the width of the vehicle; the length of the vehicle; the distribution, under the body of the vehicle, of the organs other than those carried by the axle; According to the parameters defined by the manufacturer, it is easy to understand that the axle designer has a more or less significant dimensional margin of maneuver depending on the size of the vehicle.
En l'absence de contraintes spécifiques de la part du constructeur, une approche classique consiste à prévoir des bras longitudinaux qui s'étendent de façon essentiellement orthogonale par rapport à la traverse, les différents organes solidarisés à l'essieu étant positionnés du côté intérieur de l'essieu, les uns après les autres entre la traverse et le support de roues, ce dernier étant quant à lui monté sur le bras du côté extérieur de l'essieu. In the absence of specific constraints on the part of the manufacturer, a conventional approach consists in providing longitudinal arms which extend substantially orthogonal to the cross-member, the various members secured to the axle being positioned on the inner side of the axle. the axle, one after the other between the crossbar and the wheel support, the latter being mounted on the arm of the outer side of the axle.
De tels bras longitudinaux présentent alors une longueur relativement importante, pouvant être incompatible avec les dimensions réduites de certains véhicules et/ou avec l'organisation des divers organes présents sous la caisse de ces véhicules. Such longitudinal arms then have a relatively large length, which may be incompatible with the reduced dimensions of certain vehicles and / or with the organization of the various bodies present under the body of these vehicles.
Selon une technique classique, ces bras longitudinaux comprennent un longeron sur lequel sont fixés les différents organes mentionnés précédemment. According to a conventional technique, these longitudinal arms comprise a spar on which are fixed the various bodies mentioned above.
Une autre technique consiste par exemple à fournir une pièce monobloc réalisée par moulage (par exemple de fonte) et constituant un ensemble regroupant les bras, la coupelle, le support de roues... Another technique is for example to provide a one-piece piece made by molding (for example cast iron) and constituting an assembly comprising the arms, the cup, the wheel carrier ...
2864471 3 Une telle solution apparaît toutefois clairement coûteuse, puisqu'elle implique la conception et la fabrication d'un moule (ou d'une série de moules) relativement complexe(s). Such a solution, however, appears clearly costly, since it involves the design and manufacture of a mold (or a series of molds) relatively complex (s).
De plus, la technique du moulage ne permet pas d'adapter de façon simple la pièce monobloc mentionnée précédemment en cas de modifications du cahier des charges du constructeur de véhicules. In addition, the molding technique does not allow to simply adapt the monobloc piece mentioned above in case of changes to the specifications of the vehicle manufacturer.
Selon une autre solution alternative de l'invention, les bras longitudinaux pourraient par exemple être du type bi-coquille , chaque demie-coquille étant réalisée en tôle emboutie. According to another alternative solution of the invention, the longitudinal arms could for example be of the twin-shell type, each half-shell being made of pressed sheet metal.
Ce type de solution entraîne des inconvénients de même nature que ceux rencontrés avec le moulage pour ce type d'application. This type of solution causes disadvantages of the same nature as those encountered with molding for this type of application.
L'invention a notamment pour objectif de pallier ces inconvénients de l'art antérieur. The invention particularly aims to overcome these disadvantages of the prior art.
Plus précisément, l'invention a pour objectif de proposer un essieu souple de conception nouvelle, et de permettre de nouveaux types d'organisation des organes classiquement associés à un essieu (ressort de suspension, amortisseurs, supports de roues, ...). More specifically, the invention aims to propose a flexible axle of new design, and to allow new types of organization of the organs conventionally associated with an axle (suspension spring, shock absorbers, wheel supports, ...).
En ce sens, l'invention a en particulier pour objectif de fournir un tel essieu souple qui permette d'en augmenter la compacité. En particulier, un objectif de l'invention est d'obtenir un ensemble formé par chaque bras longitudinal et ses organes associés qui soit plus compact que les ensembles du même type de l'art antérieur. In this sense, the object of the invention is in particular to provide such a flexible axle which makes it possible to increase its compactness. In particular, an object of the invention is to obtain an assembly formed by each longitudinal arm and its associated members which is more compact than the sets of the same type of the prior art.
L'invention a également pour objectif de fournir un tel essieu qui conserve les caractéristiques classiques des essieux souples, en particulier en ce qui concerne la flexion et la torsion. Another object of the invention is to provide such an axle which retains the conventional characteristics of the flexible axles, in particular as regards flexion and torsion.
L'invention a aussi pour objectif de fournir un tel essieu qui soit simple de conception et facile à fabriquer, à monter et à mettre en oeuvre. The invention also aims to provide such an axle which is simple in design and easy to manufacture, to assemble and to implement.
Ces objectifs, ainsi que d'autres qui apparaîtront par la suite, sont atteints grâce à l'invention qui a pour objet un essieu souple de véhicule automobile, comprenant une traverse reliant deux bras longitudinaux, chacun comprenant un 2864471 4 longeron dont une portion, dite portion avant, s'étend à partir de la liaison dudit longeron avec ladite traverse et porte à l'une de ses extrémités ou au voisinage de celle-ci un support de roue, ladite portion avant dudit longeron présentant une portion cintrée s'étendant sur un angle d'environ 90 et portant un amortisseur sur l'un de ses côtés et une coupelle de ressort sur l'autre de ses côtés de façon à former un ensemble compact avec ledit support de roue. These objectives, as well as others which will appear later, are achieved thanks to the invention which relates to a flexible axle of a motor vehicle, comprising a cross member connecting two longitudinal arms, each comprising a spar 2864471 including a portion, said front portion extends from the connection of said spar with said cross member and carries at one of its ends or in the vicinity thereof a wheel support, said front portion of said spar having a curved portion extending on an angle of about 90 and carrying a damper on one of its sides and a spring cup on the other of its sides so as to form a compact assembly with said wheel support.
Cette portion cintrée permet ainsi de monter sur chacun des bras longitudinaux les organes qui y sont classiquement associés, ceci toutefois en les disposant de façon rapprochée les uns des autres par rapport à l'art antérieur. This curved portion thus makes it possible to mount on each of the longitudinal arms the members which are conventionally associated therewith, however, arranging them in a manner close to each other with respect to the prior art.
Un essieu comprenant un tel bras est donc adapté notamment à des véhicules dont les dimensions et/ou l'encombrement de dessous de caisse ne permettent pas la répartition en ligne traditionnelle des organes sur le côté intérieur de chaque bras longitudinal. An axle comprising such an arm is therefore particularly suitable for vehicles whose dimensions and / or the underbody space requirement do not allow the traditional in-line distribution of the members on the inner side of each longitudinal arm.
Bien entendu, des solutions alternatives à l'invention peuvent être envisagées. Of course, alternative solutions to the invention can be envisaged.
Selon une solution préférée, ledit longeron est réalisé à partir d'un élément tubulaire. According to a preferred solution, said spar is made from a tubular element.
De tels bras longitudinaux tubulaires permettent de satisfaire les caractéristiques mécaniques exigées par les constructeurs de véhicules, ceci tout en permettant la mise en oeuvre des techniques de façonnage, et plus précisément de cintrage, présentant de nombreux avantages (productivité, simplicité, souplesse s'agissant de modifier les cotes, prix de revient bas...). Such tubular longitudinal arms make it possible to satisfy the mechanical characteristics required by the vehicle manufacturers, while allowing the implementation of shaping techniques, and more specifically of bending, presenting numerous advantages (productivity, simplicity, flexibility in to change the ratings, low cost ...).
De plus, cette technique supporte aisément des modifications dimensionnelles ou des variantes légères de l'encombrement de la caisse. In addition, this technique easily supports dimensional changes or slight variations in the size of the body.
Selon une solution avantageuse, ladite portion cintrée présente un rayon de courbure d'environ 120 mm. According to an advantageous solution, said curved portion has a radius of curvature of about 120 mm.
Préférentiellement, ledit amortisseur est monté sur le côté extérieur dudit longeron, ladite coupelle de ressort étant montée sur le côté intérieur dudit longeron. Preferably, said damper is mounted on the outer side of said spar, said spring cup being mounted on the inner side of said spar.
2864471 5 Ainsi, la portion cintrée du bras délimite, d'une part, un espace dans lequel vient s'inscrire l'amortisseur et, d'autre part, forme un support pour le montage de la coupelle de ressort. Thus, the curved portion of the arm defines, on the one hand, a space in which the damper fits and, on the other hand, forms a support for mounting the spring cup.
Selon un mode de réalisation préféré, ladite coupelle s'étend à partir de ladite portion cintrée, côté intérieur dudit longeron, selon un axe longitudinal formant avec ladite traverse un angle inférieur à 90 . According to a preferred embodiment, said cup extends from said bent portion, inner side of said spar, along a longitudinal axis forming with said cross-member an angle less than 90.
Ceci contribue à la compacité de l'essieu, en particulier en ce qui concerne la longueur des bras longitudinaux. En effet, on évite de cette façon d'étendre la coupelle avec l'encombrement maximum qu'elle occasionnerait en s'étendant orthogonalement à la traverse à partir de la portion cintrée. This contributes to the compactness of the axle, particularly as regards the length of the longitudinal arms. Indeed, it avoids this way to extend the cup with the maximum size it would cause by extending orthogonally to the cross from the curved portion.
Selon une autre caractéristique, ladite coupelle de ressort et ledit support de roue sont chacun soudés audit longeron, d'une part, et soudés entre eux, d'autre part. According to another characteristic, said spring cup and said wheel support are each welded to said spar, on the one hand, and welded together, on the other hand.
L'assemblage ainsi obtenu présente une bonne tenue dans le temps et confère une grande rigidité à la portion cintrée du bras. The assembly thus obtained has a good behavior over time and gives great rigidity to the arched portion of the arm.
Avantageusement, l'extrémité de ladite portion cintrée s'inscrit dans le plan dudit support de roue. Advantageously, the end of said curved portion is in the plane of said wheel support.
La plaque du support de roue peut de cette façon être aisément solidarisée au bras longitudinal, en particulier à l'aide d'un cordon de soudure. The plate of the wheel support can in this way be easily secured to the longitudinal arm, in particular with the aid of a weld bead.
L'invention concerne également un bras longitudinal destiné à équiper un essieu souple de véhicule automobile, ledit essieu souple de véhicule automobile, comprenant une traverse reliant deux bras longitudinaux, chacun comprenant un longeron dont une portion, dite portion avant, s'étend à partir de la liaison dudit longeron avec ladite traverse et porte à l'une de ses extrémités ou au voisinage de celle-ci un support de roue, ladite portion avant dudit longeron présentant une portion cintrée s'étendant sur un angle d'environ 90 et portant un amortisseur sur l'un de ses côtés et une coupelle de ressort sur l'autre de ses côtés. The invention also relates to a longitudinal arm intended to equip a flexible axle of a motor vehicle, said flexible axle of a motor vehicle, comprising a cross member connecting two longitudinal arms, each comprising a spar, a portion of which, said front portion, extends from the connection of said spar with said crossbar and carries at one of its ends or in the vicinity thereof a wheel support, said front portion of said spar having a curved portion extending over an angle of about 90 and bearing a shock absorber on one of its sides and a spring cup on the other of its sides.
L'invention concerne aussi un véhicule équipé d'au moins un essieu souple comprenant une traverse reliant deux bras longitudinaux, chacun comprenant un longeron dont une portion, dite portion avant, s'étend à partir de 2864471 6 la liaison dudit longeron avec ladite traverse et porte à l'une de ses extrémités ou au voisinage de celle-ci un support de roue, ladite portion avant dudit longeron présentant une portion cintrée s'étendant sur un angle d'environ 90 et portant un amortisseur sur l'un de ses côtés et une coupelle de ressort sur l'autre de ses côtés. D'autres caractéristiques et avantages de l'invention apparaîtront plus clairement à la lecture de la description suivante d'un mode de réalisation préférentiel de l'invention, donné à titre d'exemple illustratif et non limitatif, et des dessins annexés parmi lesquels: la figure 1 est une vue d'ensemble en perspective d'un essieu souple selon l'invention; la figure 2 est une vue d'un des bras longitudinaux d'un essieu selon l'invention, vu du côté intérieur de l'essieu; la figure 3 est une vue d'un des bras longitudinaux d'un essieu selon l'invention, vu du côté extérieur de l'essieu; la figure 4 est une vue d'un des bras longitudinaux d'un essieu selon l'invention, vu de dessous et du côté intérieur de l'essieu. The invention also relates to a vehicle equipped with at least one flexible axle comprising a cross member connecting two longitudinal arms, each comprising a spar of which a portion, said front portion, extends from 2864471 6 the connection of said spar with said crossbar and carries at one of its ends or in the vicinity thereof a wheel support, said front portion of said spar having a curved portion extending at an angle of about 90 and carrying a damper on one of its sides and a spring cup on the other of its sides. Other characteristics and advantages of the invention will emerge more clearly on reading the following description of a preferred embodiment of the invention, given by way of illustrative and nonlimiting example, and the appended drawings among which: Figure 1 is an overall perspective view of a flexible axle according to the invention; Figure 2 is a view of one of the longitudinal arms of an axle according to the invention, seen from the inner side of the axle; Figure 3 is a view of one of the longitudinal arms of an axle according to the invention, seen from the outer side of the axle; Figure 4 is a view of one of the longitudinal arms of an axle according to the invention, seen from below and the inner side of the axle.
Tel que déjà mentionné, le principe de l'invention repose sur le cintrage du longeron d'un bras d'essieu de façon telle que l'on puisse monter sur celui-ci un amortisseur et un ressort de suspension avec un encombrement spatial limité. As already mentioned, the principle of the invention is based on the bending of the spar of an axle arm so that it can mount on it a damper and a suspension spring with a limited space requirement.
En référence aux figures 1 à 3, un tel essieu souple comprend une traverse 1 reliant deux bras longitudinaux présentant chacun: un longeron 2; une plaque support de roue 21; une douille 22, par l'intermédiaire de laquelle l'essieu est accouplé au châssis du véhicule; des moyens de coopération 23 avec un amortisseur. Selon le présent mode de réalisation de l'invention, le longeron 2 est réalisé à partir d'un tube d'acier pour emboutissage HE360D ou HE450M, ce 2864471 7 tube étant cintré entre sa liaison avec la traverse 1 et le support de roue 21, le cintrage étant prévu de façon que le longeron 2 puisse porter un amortisseur 3 (représenté en traits pointillés) sur l'un de ses côtés et une coupelle de ressort 24 sur l'autre de ses côtés le tout avec un encombrement réduit. With reference to Figures 1 to 3, such a flexible axle comprises a cross member 1 connecting two longitudinal arms each having: a spar 2; a wheel support plate 21; a socket 22, through which the axle is coupled to the vehicle frame; cooperation means 23 with a damper. According to the present embodiment of the invention, the spar 2 is made from a drawing steel tube HE360D or HE450M, this tube being bent between its connection with the cross member 1 and the wheel support 21. , the bending being provided so that the spar 2 can carry a damper 3 (shown in broken lines) on one of its sides and a spring cup 24 on the other of its sides all with a small footprint.
Tel qu'illustré par la figure 2, la portion cintrée du longeron 2 présente un rayon de courbure r de 120 mm et s'étend sur un angle de 90 à partir de la portion rectiligne du longeron sur laquelle est fixée la traverse 1. As illustrated in FIG. 2, the curved portion of the spar 2 has a radius of curvature r of 120 mm and extends over an angle of 90 from the rectilinear portion of the spar on which the cross member 1 is fixed.
Tel que cela apparaît sur la figure 3, une pièce cylindrique filetée intérieurement 23 est fixée sur la portion rectiligne du longeron 2 qui s'étend à partir de la liaison avec la traverse, en direction du support de roues. Cette pièce 23 constitue des moyens de fixation destinés à coopérer avec un amortisseur pour solidariser ce dernier au bras longitudinal correspondant. As shown in Figure 3, an internally threaded cylindrical member 23 is fixed to the straight portion of the spar 2 which extends from the connection with the cross member, in the direction of the wheel carrier. This piece 23 constitutes fastening means intended to cooperate with a damper for securing the latter to the corresponding longitudinal arm.
Selon le mode de réalisation préférentiel illustré par les figures 1 à 3, cette pièce 23 est fixée au longeron du côté extérieur de celui-ci, tandis que la coupelle de ressort 24 est montée sur le côté intérieur du longeron. According to the preferred embodiment illustrated in Figures 1 to 3, this part 23 is fixed to the spar of the outer side thereof, while the spring cup 24 is mounted on the inner side of the spar.
On précise que l'on désigne par côtés intérieurs des longerons (ou de l'essieu), les côtés orientés vers l'axe médian (parallèle à l'axe longitudinal du véhicule) de l'essieu. Par opposition, les extérieurs des longerons (ou de l'essieu) sont ceux orientés vers l'extérieur du véhicule. It is specified that the internal sides are the longitudinal members (or axle), the sides oriented towards the central axis (parallel to the longitudinal axis of the vehicle) of the axle. In contrast, the outside of the side members (or axle) are those facing the outside of the vehicle.
De plus, la coupelle de ressort 24 est montée sur la portion cintrée du longeron, en s'étendant à partir de celle-ci vers l'intérieur de l'essieu. Ceci se traduit par le fait que l'axe longitudinal de la coupelle de ressort 24 forme avec l'axe longitudinal de la traverse un angle a inférieur à 90 . In addition, the spring cup 24 is mounted on the curved portion of the spar, extending from it to the inside of the axle. This results in the fact that the longitudinal axis of the spring cup 24 forms with the longitudinal axis of the crossbar an angle α less than 90.
En outre, la plaque support de roues 21 est couplée d'une part au longeron 2 par une sorte d'equerre 211, et d'autre part à la coupelle de ressort 24 par l'intermédiaire d'un rebord 241 de la coupelle qui se prolonge jusqu'au support de roue. La coupelle de ressort est également solidarisée au longeron par l'intermédiaire de son autre rebord 242. In addition, the wheel support plate 21 is coupled on the one hand to the spar 2 by a kind of bracket 211, and on the other hand to the spring cup 24 via a rim 241 of the cup which extends to the wheel support. The spring cup is also secured to the spar by means of its other flange 242.
On note que, selon le présent mode de réalisation de l'invention, le cintrage du tube est tel que la section extrême du longeron 2 forme une surface 2864471 8 d'appui pour la plaque support de roues 21. It should be noted that, according to the present embodiment of the invention, the bending of the tube is such that the end section of the spar 2 forms a bearing surface 2864471 for the wheel support plate 21.
En référence à la figure 4, le longeron porte de plus une pièce d'appui 25 pour une butée de choc (non représentée) s'étendant entre cette pièce et la caisse et qui a pour fonction d'encaisser certains chocs subis par la caisse du véhicule. With reference to FIG. 4, the spar carries, in addition, a support piece 25 for a shock stop (not shown) extending between this piece and the body and whose function is to absorb certain shocks to the body. of the vehicle.
De plus, les goussets 12 sont fixés sur chaque longeron 2. Ces goussets sont destinés à recevoir une barre anti-devers 11 qui s'étend au sein de la traverse 1, cette dernière présentant en l'occurrence une section en V ouverte vers le bas. In addition, the gussets 12 are attached to each spar 2. These gussets are intended to receive an anti-roll bar 11 which extends within the crossbar 1, the latter having in this case an open V-shaped section. low.
Selon un mode de réalisation préférentiel, les liaisons entre les différents organes de l'essieu sont assurés par des cordons de soudure. According to a preferred embodiment, the links between the various members of the axle are provided by welding beads.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0315515A FR2864471A1 (en) | 2003-12-29 | 2003-12-29 | Wheel shaft for use in vehicle, has crosspiece connecting two longitudinal arms, where each arm has side rail whose front portion has bent portion extending about specific angle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0315515A FR2864471A1 (en) | 2003-12-29 | 2003-12-29 | Wheel shaft for use in vehicle, has crosspiece connecting two longitudinal arms, where each arm has side rail whose front portion has bent portion extending about specific angle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR2864471A1 true FR2864471A1 (en) | 2005-07-01 |
Family
ID=34639671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR0315515A Pending FR2864471A1 (en) | 2003-12-29 | 2003-12-29 | Wheel shaft for use in vehicle, has crosspiece connecting two longitudinal arms, where each arm has side rail whose front portion has bent portion extending about specific angle |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2864471A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008009285A1 (en) * | 2006-07-21 | 2008-01-24 | Gm Global Technology Operations, Inc. | Twist-beam rear axle comprising an additional watt linkage |
| WO2009077810A1 (en) * | 2007-12-18 | 2009-06-25 | Renault Trucks | Rear modular suspension for a motorized heavy goods vehicle |
| DE102008036340A1 (en) * | 2008-08-04 | 2010-02-11 | Volkswagen Ag | Motor vehicle comprises torsion beam axle, which has two axle guides, which are coupled with vehicle structure at end section and with vehicle wheel at another end section |
| CN102019827A (en) * | 2010-12-09 | 2011-04-20 | 金华福多纳机械有限公司 | Variable cross-section vehicle trailing arm member |
| FR2959449A1 (en) * | 2010-04-30 | 2011-11-04 | Peugeot Citroen Automobiles Sa | Semi-rigid type assembled rear axle for supporting rear wheel of motor vehicle, has cross-piece whose end is connected to suspension arm, and spring whose retainer and support constitute integrated assembly before assembling rear axle |
| FR3095780A1 (en) * | 2019-05-07 | 2020-11-13 | Renault S.A.S | Rear axle comprising a reinforcing member mounted between a longitudinal arm, a transverse cross member and a stabilizing bar |
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| EP0681932A2 (en) * | 1994-05-13 | 1995-11-15 | Adam Opel Ag | Motor vehicle rear axle |
| DE19520520A1 (en) * | 1994-06-16 | 1995-12-21 | Volkswagen Ag | Guide rod between vehicle wheel and body |
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| EP1297977A2 (en) * | 2001-09-28 | 2003-04-02 | FIAT AUTO S.p.A. | Axle having a torsionally deformable cross member for the rear suspension of a motor vehicle, and method for production of such axle |
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| EP0681932A2 (en) * | 1994-05-13 | 1995-11-15 | Adam Opel Ag | Motor vehicle rear axle |
| DE19520520A1 (en) * | 1994-06-16 | 1995-12-21 | Volkswagen Ag | Guide rod between vehicle wheel and body |
| FR2819754A1 (en) * | 2001-01-23 | 2002-07-26 | Auto Chassis Int | FLEXIBLE REAR AXLE FOR MOTOR VEHICLE |
| EP1297977A2 (en) * | 2001-09-28 | 2003-04-02 | FIAT AUTO S.p.A. | Axle having a torsionally deformable cross member for the rear suspension of a motor vehicle, and method for production of such axle |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101516656B (en) * | 2006-07-21 | 2012-02-01 | Gm全球科技运作股份有限公司 | Twist-beam rear axle comprising an additional watt linkage |
| GB2455011A (en) * | 2006-07-21 | 2009-06-03 | Gm Global Tech Operations Inc | Twist-beam rear axle comprising an additional watt linkage |
| WO2008009285A1 (en) * | 2006-07-21 | 2008-01-24 | Gm Global Technology Operations, Inc. | Twist-beam rear axle comprising an additional watt linkage |
| GB2455011B (en) * | 2006-07-21 | 2011-02-23 | Gm Global Tech Operations Inc | Suspension for non-steered wheels on a body of a motor vehicle |
| US8177245B2 (en) | 2006-07-21 | 2012-05-15 | GM Global Technology Operations LLC | Twist-beam rear axle comprising an additional Watt linkage |
| RU2445216C2 (en) * | 2006-07-21 | 2012-03-20 | Джи Эм Глоубал Текнолоджи Оперейшнз, Инк. | Rear axle with wheels suspended on lengthwise levers with extra watt mechanism |
| WO2009077810A1 (en) * | 2007-12-18 | 2009-06-25 | Renault Trucks | Rear modular suspension for a motorized heavy goods vehicle |
| DE102008036340A1 (en) * | 2008-08-04 | 2010-02-11 | Volkswagen Ag | Motor vehicle comprises torsion beam axle, which has two axle guides, which are coupled with vehicle structure at end section and with vehicle wheel at another end section |
| DE102008036340B4 (en) | 2008-08-04 | 2021-08-05 | Volkswagen Ag | Motor vehicle with a twist beam axle |
| FR2959449A1 (en) * | 2010-04-30 | 2011-11-04 | Peugeot Citroen Automobiles Sa | Semi-rigid type assembled rear axle for supporting rear wheel of motor vehicle, has cross-piece whose end is connected to suspension arm, and spring whose retainer and support constitute integrated assembly before assembling rear axle |
| CN102019827A (en) * | 2010-12-09 | 2011-04-20 | 金华福多纳机械有限公司 | Variable cross-section vehicle trailing arm member |
| CN102019827B (en) * | 2010-12-09 | 2013-02-27 | 浙江福多纳汽车部件有限公司 | Variable cross-section vehicle trailing arm member |
| FR3095780A1 (en) * | 2019-05-07 | 2020-11-13 | Renault S.A.S | Rear axle comprising a reinforcing member mounted between a longitudinal arm, a transverse cross member and a stabilizing bar |
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