WO2024133531A1 - Method for manufacturing torsionally flexible axle structures - Google Patents

Method for manufacturing torsionally flexible axle structures Download PDF

Info

Publication number
WO2024133531A1
WO2024133531A1 PCT/EP2023/087059 EP2023087059W WO2024133531A1 WO 2024133531 A1 WO2024133531 A1 WO 2024133531A1 EP 2023087059 W EP2023087059 W EP 2023087059W WO 2024133531 A1 WO2024133531 A1 WO 2024133531A1
Authority
WO
WIPO (PCT)
Prior art keywords
pairs
tubular members
arms
sleeves
manufacturing
Prior art date
Application number
PCT/EP2023/087059
Other languages
French (fr)
Inventor
Pierre Blanche
Nicolas DELAURE
Emmanuel Gallo
Original Assignee
Renault S.A.S.
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 Renault S.A.S. filed Critical Renault S.A.S.
Publication of WO2024133531A1 publication Critical patent/WO2024133531A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G7/00—Pivoted suspension arms; Accessories thereof
    • B60G7/02—Attaching arms to sprung part of vehicle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B35/00—Axle units; Parts thereof ; Arrangements for lubrication of axles
    • B60B35/02—Dead axles, i.e. not transmitting torque
    • B60B35/04—Dead axles, i.e. not transmitting torque straight
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B35/00—Axle units; Parts thereof ; Arrangements for lubrication of axles
    • B60B35/02—Dead axles, i.e. not transmitting torque
    • B60B35/08—Dead axles, i.e. not transmitting torque of closed hollow section
    • 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
    • B60G21/052—Mounting means therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2200/00—Indexing codes relating to suspension types
    • B60G2200/20—Semi-rigid axle suspensions
    • B60G2200/21—Trailing arms connected by a torsional beam, i.e. twist-beam axles
    • 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
    • B60G2204/143—Mounting of suspension arms on the vehicle body or chassis
    • B60G2204/1434—Mounting of suspension arms on the vehicle body or chassis in twist-beam axles arrangement
    • 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
    • B60G2206/011—Modular constructions
    • 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
    • B60G2206/017—Constructional features of suspension elements, e.g. arms, dampers, springs forming an eye for the bushing
    • 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
    • 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
    • B60G2206/70—Materials used in suspensions
    • B60G2206/72—Steel
    • B60G2206/722—Plates
    • 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
    • B60G2206/80—Manufacturing procedures
    • B60G2206/81—Shaping
    • B60G2206/8102—Shaping by stamping
    • 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
    • B60G2206/80—Manufacturing procedures
    • B60G2206/82—Joining
    • B60G2206/8201—Joining by welding
    • 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
    • B60G2206/90—Maintenance
    • B60G2206/91—Assembly procedures

Definitions

  • the present invention relates to a method of manufacturing twistable axle structures of a motor vehicle.
  • axles have two parallel suspension arms connected together by a crossmember.
  • the two arms then have a front end mounted articulated on an anchoring point of the vehicle body and a rear end equipped with a wheel support.
  • the rear end of the control arms extends toward the rear of the vehicle, while the front end extends toward the front of the vehicle.
  • wheel supports accommodate the rear wheels of the vehicle.
  • suspension arms are also connected to the body by means of elastically compressible members, for example helical springs.
  • Vehicles of these different types can be manufactured on a common platform, from compact vehicles to more bulky and bulky vehicles. Vehicles of these different types differ, for example, by their wheelbase, their track, the spacing between the wheels, or even their height.
  • pairs of first arms connected together by a crosspiece and having a first length to be able to connect the two wheels and the body of a first type of vehicle ; and on the other hand pairs of second arms connected to each other and having a second length greater than the first length, to connect the two wheels and the body of a second type of vehicle.
  • a problem which arises and which the present invention aims to resolve is to provide a method of manufacturing twistable axle structures which makes it possible to install different types of axle structures on the same platform at more advantageous costs.
  • a method of manufacturing twistable axle structures of a motor vehicle comprising the following steps: pairs of first arms connected together of a first length are provided, adapted to connect the two wheels and the body of the vehicle. 'a first type of vehicle; pairs of second arms connected to each other of a second length greater than said first length are provided, adapted to connect the two wheels and the body of a second type of vehicle.
  • a characteristic of the invention lies in the implementation of a common part of the arms, the tubular members, and sleeves of different lengths.
  • the sleeves are then installed on the tubular members according to the required arm length, between the wheel support and the anchor point on the vehicle body as will be explained below.
  • the sleeves are made of a metallic material, for example steel. In this way, they can be easily connected to the tubular members, themselves made of steel, by welding.
  • the long sleeves can also be bent according to a first curvature to be able to increase the height of the vehicle for example. They can also be bent according to a second curvature, in a plane substantially perpendicular to the plane defined by the first curvature, to increase the track of the vehicle.
  • tubular members and the wheel supports are identical for the different types of vehicles, and the different sleeves are installed depending on the type of vehicle. In this way, we standardize the manufacturing of a substantial part of the different suspension arms, and therefore, we reduce manufacturing costs.
  • each of the sleeves of said pairs of sleeves comprises a fitting end and, on the opposite side, a Y-shaped end for receiving a socket extending transversely.
  • the Y-shaped end is oriented so as to be able to orient the sleeve transversely, in a substantially horizontal direction, while the first end of the tubular members is fitted into the fitting end.
  • the socket made of a metallic material, is then welded into the Y-shaped end of the sleeves.
  • the socket is for example made of steel.
  • a small diameter bushing or a large diameter bushing can also be secured to the sleeves.
  • Such a possibility makes it possible to connect the suspension arm to the body by means of silent blocks of different dimensions depending on the need for vibration filtering.
  • said fitting end is substantially cylindrical.
  • the first end of the tubular members is cylindrical, and the section of the fitting end and the first ends of the tubular members are identical. In this way, the first end of the tubular members and the fitting end of the sleeves cooperate perfectly with each other. This results in a better connection between the two.
  • said fitting end is defined by generators parallel to a fitting direction, while said Y-shaped end is inclined relative to said fitting direction.
  • the Y end has two branches, which are then inclined relative to the direction of the generators of the fitting end.
  • two shell pieces are provided, each having two opposite longitudinal edges and an arc edge opposite a notched edge, and said two pieces are connected together respectively by their two opposite edges to forming each of the sleeves of said pairs of sleeves.
  • the notched edges of said two pieces define a circular shape between a semi-circle and three quarters of a circle. Notched edges of the two pieces extend opposite each other to form the Y-shaped end. And thanks to their shape, the socket can be easily connected to it.
  • the sleeve has, for example, an external diameter substantially equal to the diameter of the notched edges of the two parts. And it is advantageously welded with notched edges.
  • the sleeves are welded to the first ends of the tubular members to install them.
  • the crosspieces are all identical and made of a metallic material. And we connect the arms of each pair of arms via the tubular members upstream of the sleeves.
  • said T-shaped crosspieces are welded to each of said pairs of first and second arms.
  • wheel supports are installed at the second ends of the tubular members of said pairs of tubular members.
  • FIG. 1 is a schematic side view of an element allowing the implementation of the method according to the invention
  • FIG. 2 is a schematic side view of the element shown in [Fig. 1] supplemented with another element in accordance with the invention
  • FIG. 3 is a schematic side view of the element shown in [Fig. 1] supplemented with yet another element in accordance with the invention
  • FIG. 4 is a schematic detail view in exploded perspective of said other element shown in [Fig. 2] ;
  • FIG. 5 is a partial schematic top view of the object of [Fig. 4] ; and, [Fig. 6] is a schematic top view of the object of [Fig. 4] after assembly.
  • FIG. 1 shows a longitudinal tubular member 10 having a first end 12 opposite a second end 14. Also, the second end is equipped with a wheel support 16 of a motor vehicle.
  • this longitudinal tubular member 10 after being equipped and mounted, fits into an orthogonal reference X, Y, Z, in which the X axis extends in a front-to-rear longitudinal direction of the motor vehicle, oriented towards the rear; the Y axis extends in a transverse direction of the vehicle, oriented from left to right; and the Z axis extends in a vertical direction, oriented away from the ground.
  • the longitudinal tubular member 10 is substantially curved so that the first end 12 extends in a first average direction D1 substantially inclined relative to a second average direction D2 of the second end 14, in the plane (X, Z).
  • first end 12 of the tubular member 10 is substantially deformed and ovalized by extending along the vertical component Z.
  • FIG. 4 shows a first right shell 18 extending opposite a first left shell 20.
  • the first left shell 20 has two first opposite left longitudinal edges, an upper edge 22 and a lower edge 24, on the one hand, and an arcuate left edge 28, towards the rear, opposite an indented left edge 30, towards the front, on the other hand.
  • the indented left edge 30 defines a left circular shape 32, open along a chord opposite the arcuate left edge 28.
  • the circular shape has a radius R and defines a circular segment between 180° and 270° .
  • the straight shell 18 has two first opposite straight longitudinal edges, an upper right edge 34 and a lower right edge 36. It also has a straight arcuate edge 38, towards the rear, opposite a notched straight edge. 40 oriented towards the front and receiving a socket 42.
  • the indented right edge 40 defines a right circular shape identical to the left circular shape 32 and having the same radius R.
  • the socket 42 has an external radius close to the radius R of the notched edge 40 to be able to be engaged through and as will be explained below, also through the left notched edge 30.
  • FIG. 5 illustrates seen from above, the object of [Fig. 4] and we thus find the right shell 18 facing the left shell 20. Also, we will observe that the two shells 18, 20 are substantially curved, the right shell 18 is substantially concave, while the left shell 20 is parallel substantially convex. We also find in this [Fig. 5] the socket 42 engaged inside the indented right edge 40. Thus, the two shells 18, 20 are paired so that the first left lower edge 24 comes to bear against the first right lower edge 36, and that the first upper left edge 22 comes to rest against the first upper right edge 34, while the socket 42 also extends through the indented left edge 30.
  • a weld bead is then applied to the joint of the first two upper edges 22, 34 and to the joint of the first two lower edges 24, 36 to secure them together and form a first sleeve 44 then appearing on the [Fig. 6],
  • first arcuate left edge 28 and the first arcuate right edge 38 together delimit a first substantially cylindrical fitting end 46.
  • first two notched edges 30, 40 form a first Y-shaped end 48 which then traps the socket 42.
  • the sleeve 42 is completely integral with the sleeve 44 and it extends transversely projecting from the two shells 18, 20 of substantially the same length.
  • first fitting end 46 extends in a fitting direction E to which the generating lines of this end extend parallel.
  • the first two shells 18, 20 being substantially curved, the first Y-shaped end 48 extends in a receiving direction H, then inclined relative to the fitting direction E
  • the axis A of the socket 42 is itself inclined from the fitting direction E by an angle less than 90°.
  • the first fitting end 46 has a cross section substantially identical to the cross section of the first end 12 of the longitudinal tubular member 10 shown in [Fig. 1 ],
  • the internal cylindrical surface of the first fitting end 46 has a section identical to the external cylindrical surface of the first end 12 so as to be able, except for functional clearance, to press the first end 12 inside the first fitting end 46.
  • the first end 12 fitted into the sleeve 44. And they are then secured by means of a weld bead applied to the joint between the first end 12 and the first arcuate edges 28, 38 of the sleeve 44.
  • the first sleeve 44 has a length L1, which we will describe here as short.
  • first left suspension arm 45 having a first length B1 measured between the center C of the wheel support 16 and the center of the socket 42.
  • the same sleeve 44 can be installed at the end of the left tubular member 10 and at the end of a right tubular member, not shown. To do this, the sleeve 44 is then turned 180° relative to its fitting axis E to be able to receive the end of the right tubular member.
  • the two suspension arms, left and right thus produced are then connected together by means of a crosspiece not shown.
  • the two opposite ends of the crosspiece are then T-welded onto the tubular members respectively, upstream of the sleeves.
  • bushings 42 then make it possible to pivotally connect the end of the suspension arms to the body.
  • the advantage of the manufacturing method according to the invention is to design at least a second sleeve 44' of a length greater than that of the first sleeve 44 shown in [Fig. 4], [Fig. 5] and [Fig. 6] and installed on the tubular member 10 of [Fig. 2],
  • FIG. 3 shows precisely the second sleeve 44' in which a second end 12' of a second tubular member 10' is fitted to form a second left suspension arm 45'.
  • the second sleeve 44' is produced in a manner similar to the first sleeve 44, by cutting-stamping a metal plate, then welding. However, its dimensions are different. In fact, it has a length L2, greater than the length L1 of the first sleeve 44.
  • a second left suspension arm 45' having a second length B2 measured between the center C' of the wheel support 16' and the center of the socket 42'.
  • the second length B2 is greater than the first length B1.
  • a second right arm is made in the same way as the second left arm and they are then connected together by means of a crosspiece as well.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Body Suspensions (AREA)
  • Manufacture Of Motors, Generators (AREA)

Abstract

The invention relates to a method for manufacturing axle structures of a motor vehicle, comprising the following steps: providing pairs of first arms (45) of a first length, which are capable of connecting the two wheels and the body of a first type of vehicle; and providing pairs of second arms of a second length, which are capable of connecting the two wheels and the body of a second type of vehicle. The following are provided: a plurality of pairs of longitudinal tubular members (10) of the same length, each of the tubular members having a first end (12) opposite a second end (14); and pairs of short sleeves (44) and pairs of long sleeves. The short sleeves (44) are installed at the first ends (12) of tubular members of pairs of tubular members, while the long sleeves are installed at the first ends of tubular members of other pairs of tubular members.

Description

Titre de l'invention : Procédé de fabrication de structures d’essieu torsible Title of the invention: Process for manufacturing twistable axle structures
[La présente invention se rapporte à un procédé de fabrication de structures d’essieu torsible de véhicule automobile. [The present invention relates to a method of manufacturing twistable axle structures of a motor vehicle.
Il est connu de mettre en œuvre des essieux flexibles à l’arrière des véhicules automobiles. It is known to implement flexible axles at the rear of motor vehicles.
Ces essieux comportent deux bras de suspension parallèles reliés entre eux par une traverse. Les deux bras présentent alors une extrémité avant montée articulée sur un point d’ancrage de la caisse du véhicule et une extrémité arrière équipée d’un support de roue. L’extrémité arrière des bras de suspension s’étend vers l’arrière du véhicule, tandis que l’extrémité avant s’étend vers l’avant du véhicule. Et les supports de roue reçoivent les roues arrière du véhicule. These axles have two parallel suspension arms connected together by a crossmember. The two arms then have a front end mounted articulated on an anchoring point of the vehicle body and a rear end equipped with a wheel support. The rear end of the control arms extends toward the rear of the vehicle, while the front end extends toward the front of the vehicle. And the wheel supports accommodate the rear wheels of the vehicle.
En outre, les bras de suspension sont également reliés à la caisse au moyen d’organes élastiquement compressibles, par exemple des ressorts hélicoïdaux. In addition, the suspension arms are also connected to the body by means of elastically compressible members, for example helical springs.
Différents types de véhicules peuvent être fabriqués sur une plateforme commune, des véhicules compacts jusqu’à des véhicules plus encombrants et volumineux. Les véhicules de ces différents types diffèrent par exemple par leur empattement, leur voie, soit l’écartement entre les roues, ou encore leur hauteur. Different types of vehicles can be manufactured on a common platform, from compact vehicles to more bulky and bulky vehicles. Vehicles of these different types differ, for example, by their wheelbase, their track, the spacing between the wheels, or even their height.
Partant, il est usuel de fournir sur une même plate-forme, d’une part des paires de premiers bras reliés entre eux par une traverse et présentant une première longueur pour pouvoir relier les deux roues et la caisse d’un premier type de véhicule ; et d’autre part des paires de deuxième bras reliés entre eux et présentant une deuxième longueur supérieure à la première longueur, pour relier les deux roues et la caisse d’un deuxième type de véhicule. Therefore, it is usual to provide on the same platform, on the one hand, pairs of first arms connected together by a crosspiece and having a first length to be able to connect the two wheels and the body of a first type of vehicle ; and on the other hand pairs of second arms connected to each other and having a second length greater than the first length, to connect the two wheels and the body of a second type of vehicle.
Autrement dit, il convient de concevoir et de réaliser deux paires de bras différents pour les deux types de véhicules fabriqués sur la plateforme commune. In other words, it is appropriate to design and produce two different pairs of arms for the two types of vehicles manufactured on the common platform.
Or, la conception et la réalisation de ces différents types de bras est relativement coûteuse. However, the design and production of these different types of arms is relatively expensive.
Aussi, un problème qui se pose et que vise à résoudre la présente invention est de fournir un procédé de fabrication de structures d’essieu torsible qui permette d’installer différents types de structures d’essieu sur une même plateforme à des coûts plus avantageux. Dans ce but, il est proposé un procédé de fabrication de structures d’essieu torsible de véhicule automobile comprenant les étapes suivantes : on fournit des paires de premiers bras reliés entre eux d’une première longueur adaptées à relier les deux roues et la caisse d’un premier type de véhicule ; on fournit des paires de deuxième bras reliés entre eux d’une deuxième longueur supérieure à ladite première longueur, adaptées à relier les deux roues et la caisse d’un deuxième type de véhicule. Aussi, on fournit : une pluralité de paires d’organes tubulaires longitudinaux d’une même longueur, chacun des organes tubulaires présentant une première extrémité opposée à une seconde extrémité et des paires de manchons courts et des paires de manchons longs. Et, on installe les manchons courts aux premières extrémités d’organes tubulaires de paires d’organes tubulaires, pour fournir lesdites paires de premiers bras, tandis qu’on installe les manchons longs aux premières extrémités d’organes tubulaires d’autres paires d’organes tubulaires pour fournir lesdites paires de deuxièmes bras. Also, a problem which arises and which the present invention aims to resolve is to provide a method of manufacturing twistable axle structures which makes it possible to install different types of axle structures on the same platform at more advantageous costs. For this purpose, a method of manufacturing twistable axle structures of a motor vehicle is proposed, comprising the following steps: pairs of first arms connected together of a first length are provided, adapted to connect the two wheels and the body of the vehicle. 'a first type of vehicle; pairs of second arms connected to each other of a second length greater than said first length are provided, adapted to connect the two wheels and the body of a second type of vehicle. Also, we provide: a plurality of pairs of longitudinal tubular members of the same length, each of the tubular members having a first end opposite a second end and pairs of short sleeves and pairs of long sleeves. And, the short sleeves are installed at the first ends of tubular members of pairs of tubular members, to provide said pairs of first arms, while the long sleeves are installed at the first ends of tubular members of other pairs of tubular members for providing said pairs of second arms.
Ainsi, une caractéristique de l’invention réside dans la mise en œuvre d’une partie commune des bras, les organes tubulaires, et de manchons de différentes longueurs. Les manchons sont alors installés sur les organes tubulaires en fonction de la longueur de bras requise, entre le support de roue et le point d’ancrage sur la caisse du véhicule comme on l’expliquera ci-après. Thus, a characteristic of the invention lies in the implementation of a common part of the arms, the tubular members, and sleeves of different lengths. The sleeves are then installed on the tubular members according to the required arm length, between the wheel support and the anchor point on the vehicle body as will be explained below.
Les manchons sont réalisés dans un matériau métallique, par exemple en acier. De la sorte, ils peuvent être aisément reliés aux organes tubulaires, eux-mêmes en acier, par soudure. The sleeves are made of a metallic material, for example steel. In this way, they can be easily connected to the tubular members, themselves made of steel, by welding.
On observera que les manchons longs peuvent également être cintrés selon une première courbure pour pouvoir augmenter la hauteur du véhicule par exemple. Ils peuvent également être cintrés selon une deuxième courbure, dans un plan sensiblement perpendiculaire au plan définit par la première courbure, pour augmenter la voie du véhicule. It will be observed that the long sleeves can also be bent according to a first curvature to be able to increase the height of the vehicle for example. They can also be bent according to a second curvature, in a plane substantially perpendicular to the plane defined by the first curvature, to increase the track of the vehicle.
Ainsi, les organes tubulaires et les supports de roue sont identiques pour les différents types de véhicules, et on installe les différents manchons en fonction du type de véhicule. De la sorte, on standardise la fabrication d’une partie substantielle des différents bras de suspension, et partant, on en réduit les coûts de fabrication. Thus, the tubular members and the wheel supports are identical for the different types of vehicles, and the different sleeves are installed depending on the type of vehicle. In this way, we standardize the manufacturing of a substantial part of the different suspension arms, and therefore, we reduce manufacturing costs.
Selon un mode de mise en œuvre de l’invention particulièrement avantageux, chacun des manchons desdites paires de manchons comprend une extrémité d’emmanchement et à l’opposé, une extrémité en Y pour recevoir une douille s’étendant transversalement. Aussi, l’extrémité en Y est orientée de manière à pouvoir orienter la douille transversalement, selon une direction sensiblement horizontale, tandis que la première extrémité des organes tubulaires est emmanchée dans l’extrémité d’emmanchement. La douille, réalisée dans un matériau métallique, est alors soudée dans l’extrémité en Y des manchons. La douille est par exemple réalisée en acier. According to a particularly advantageous embodiment of the invention, each of the sleeves of said pairs of sleeves comprises a fitting end and, on the opposite side, a Y-shaped end for receiving a socket extending transversely. Also, the Y-shaped end is oriented so as to be able to orient the sleeve transversely, in a substantially horizontal direction, while the first end of the tubular members is fitted into the fitting end. The socket, made of a metallic material, is then welded into the Y-shaped end of the sleeves. The socket is for example made of steel.
Outre la longueur des bras de suspension, qui est déterminée par la mise en œuvre de manchons courts ou de manchons longs, une douille de petit diamètre ou une douille de gros diamètre peut également être solidarisée aux manchons. Une telle possibilité permet de relier le bras de suspension à la caisse au moyen de silentbloc de différentes dimensions en fonction du besoin en filtrage des vibrations. In addition to the length of the suspension arms, which is determined by the use of short sleeves or long sleeves, a small diameter bushing or a large diameter bushing can also be secured to the sleeves. Such a possibility makes it possible to connect the suspension arm to the body by means of silent blocks of different dimensions depending on the need for vibration filtering.
Aussi, et de manière avantageuse, ladite extrémité d’emmanchement est sensiblement cylindrique. Corrélativement, la première extrémité des organes tubulaires est cylindrique, et la section de l’extrémité d’emmanchement et des premières extrémités des organes tubulaires sont identiques. De la sorte, la première extrémité des organes tubulaires et l’extrémité d’emmanchement des manchons coopèrent parfaitement l’une avec l’autre. On obtient de la sorte une meilleure liaison entre les deux. Also, and advantageously, said fitting end is substantially cylindrical. Correlatively, the first end of the tubular members is cylindrical, and the section of the fitting end and the first ends of the tubular members are identical. In this way, the first end of the tubular members and the fitting end of the sleeves cooperate perfectly with each other. This results in a better connection between the two.
Selon un mode de réalisation de l’invention particulièrement avantageux, ladite extrémité d’emmanchement est définie par des génératrices parallèles à une direction d’emmanchement, tandis que ladite extrémité en Y est inclinée par rapport à ladite direction d’emmanchement. Ainsi, l’extrémité en Y, présentes deux branches, lesquelles sont alors inclinées par rapport à la direction des génératrices de l’extrémité d’emmanchement. Une telle inclinaison permet dans certaines mesures, de réduire la voie du véhicule. According to a particularly advantageous embodiment of the invention, said fitting end is defined by generators parallel to a fitting direction, while said Y-shaped end is inclined relative to said fitting direction. Thus, the Y end has two branches, which are then inclined relative to the direction of the generators of the fitting end. Such an inclination makes it possible, to certain extents, to reduce the path of the vehicle.
Selon un mode de mise en œuvre préférée de l’invention, on fournit deux pièces en coquille présentant chacune deux rebords longitudinaux opposés et un bord en arc opposé à un bord échancré, et on relie ensemble lesdites deux pièces respectivement par leurs deux rebords opposés pour former chacun des manchons desdites paires de manchons. Un tel mode de mise en œuvre permet de réaliser des manchons par des techniques industrielles usuelles de découpage-emboutissage, puis de soudage. On obtient ainsi des pièces à un coût avantageux. According to a preferred embodiment of the invention, two shell pieces are provided, each having two opposite longitudinal edges and an arc edge opposite a notched edge, and said two pieces are connected together respectively by their two opposite edges to forming each of the sleeves of said pairs of sleeves. Such an implementation method makes it possible to produce sleeves using usual industrial techniques of cutting-stamping, then welding. We thus obtain parts at an advantageous cost.
Préférentiellement, les bords échancrés desdites deux pièces définissent une forme circulaire comprise entre un demi-cercle et trois quarts de cercle. Les bords échancrés des deux pièces viennent s’étendre en vis-à-vis pour former l’extrémité en Y. Et grâce à leur forme, la douille peut être reliée aisément à celle-ci. La douille présente par exemple un diamètre externe sensiblement égal au diamètre des bords échancrés des deux pièces. Et elle est avantageusement soudée avec les bords échancrés.Preferably, the notched edges of said two pieces define a circular shape between a semi-circle and three quarters of a circle. Notched edges of the two pieces extend opposite each other to form the Y-shaped end. And thanks to their shape, the socket can be easily connected to it. The sleeve has, for example, an external diameter substantially equal to the diameter of the notched edges of the two parts. And it is advantageously welded with notched edges.
Autrement dit, on soude les manchons aux premières extrémités des organes tubulaires pour les installer. In other words, the sleeves are welded to the first ends of the tubular members to install them.
Par ailleurs, on fournit avantageusement une pluralité de traverses pour relier ensemble les bras de chacune desdites paires de premiers et de deuxièmes bras. Préférentiellement, les traverses sont toutes identiques et réalisées dans un matériau métallique. Et on relie les bras de chacune des paires de bras par l’intermédiaire des organes tubulaires en amont des manchons. Furthermore, we advantageously provide a plurality of crosspieces to connect together the arms of each of said pairs of first and second arms. Preferably, the crosspieces are all identical and made of a metallic material. And we connect the arms of each pair of arms via the tubular members upstream of the sleeves.
Avantageusement, on soude lesdites traverses en T à chacune desdites paires de premiers et de deuxièmes bras. Advantageously, said T-shaped crosspieces are welded to each of said pairs of first and second arms.
En outre, de manière préférentielle, on installe des supports de roue aux secondes extrémités des organes tubulaires desdites paires d’organes tubulaires. In addition, preferably, wheel supports are installed at the second ends of the tubular members of said pairs of tubular members.
D’autres particularités et avantages de l’invention ressortiront à la lecture de la description faite ci-après de modes de réalisation particuliers de l’invention, donnés à titre indicatif mais non limitatif, en référence aux dessins annexés sur lesquels : Other particularities and advantages of the invention will emerge on reading the description given below of particular embodiments of the invention, given for information but not limitation, with reference to the appended drawings in which:
[Fig. 1 ] est une vue schématique de côté d’un élément permettant la mise en œuvre du procédé selon l’invention ; [Fig. 1] is a schematic side view of an element allowing the implementation of the method according to the invention;
[Fig. 2] est une vue schématique de côté de l’élément représenté sur la [Fig. 1 ] complété d’un autre élément conformément à l’invention ; [Fig. 2] is a schematic side view of the element shown in [Fig. 1] supplemented with another element in accordance with the invention;
[Fig. 3] est une vue schématique de côté de l’élément représenté sur la [Fig. 1 ] complété d’encore un autre élément conformément à l’invention ; [Fig. 3] is a schematic side view of the element shown in [Fig. 1] supplemented with yet another element in accordance with the invention;
[Fig. 4] est une vue schématique de détail en perspective éclatée dudit autre élément représenté sur la [Fig. 2] ; [Fig. 4] is a schematic detail view in exploded perspective of said other element shown in [Fig. 2] ;
[Fig. 5] est une vue schématique partielle de dessus de l’objet de la [Fig. 4] ; et, [Fig. 6] est une vue schématique de dessus de l’objet de la [Fig. 4] après assemblage. [Fig. 5] is a partial schematic top view of the object of [Fig. 4] ; and, [Fig. 6] is a schematic top view of the object of [Fig. 4] after assembly.
La [Fig. 1 ] montre un organe tubulaire longitudinal 10 présentant une première extrémité 12 opposée à une seconde extrémité 14. Aussi, la seconde extrémité est équipée d’un support de roue 16 de véhicule automobile. [Fig. 1] shows a longitudinal tubular member 10 having a first end 12 opposite a second end 14. Also, the second end is equipped with a wheel support 16 of a motor vehicle.
Comme on l’expliquera plus en détail ci-après, cet organe tubulaire longitudinal 10 après être équipé et monté, s’inscrit dans un repère orthogonal X, Y, Z, dans lequel l’axe X s’étend selon une direction longitudinale avant-arrière du véhicule automobile, orienté vers l’arrière ; l’axe Y s’étend selon une direction transversale du véhicule, orienté de la gauche vers la droite ; et l’axe Z s’étend selon une direction verticale, orienté à l’opposé du sol. As will be explained in more detail below, this longitudinal tubular member 10 after being equipped and mounted, fits into an orthogonal reference X, Y, Z, in which the X axis extends in a front-to-rear longitudinal direction of the motor vehicle, oriented towards the rear; the Y axis extends in a transverse direction of the vehicle, oriented from left to right; and the Z axis extends in a vertical direction, oriented away from the ground.
L’organe tubulaire longitudinal 10 est sensiblement cintré de sorte que la première extrémité 12 s’étend selon une première direction moyenne D1 sensiblement incliné par rapport à une seconde direction moyenne D2 de la seconde extrémité 14, dans le plan (X, Z). The longitudinal tubular member 10 is substantially curved so that the first end 12 extends in a first average direction D1 substantially inclined relative to a second average direction D2 of the second end 14, in the plane (X, Z).
Aussi, la première extrémité 12 de l’organe tubulaire 10 est sensiblement déformée et ovalisée en s’étendant selon la composante verticale Z. Also, the first end 12 of the tubular member 10 is substantially deformed and ovalized by extending along the vertical component Z.
On se reportera à présent aux [Fig. 4], [Fig. 5] et [Fig. 6] avant de revenir sur la [Fig. We will now refer to [Fig. 4], [Fig. 5] and [Fig. 6] before returning to [Fig.
1 ] puis sur la [Fig. 2], 1 ] then on [Fig. 2],
La [Fig. 4] montre une première coquille droite 18 s’étendant en regard d’une première coquille gauche 20. La première coquille gauche 20 présente deux premiers rebords longitudinaux gauche opposés, un rebord supérieur 22 et un rebord inférieur 24, d’une part, et un bord gauche en arc 28, vers l’arrière, opposé à un bord gauche échancré 30, vers l’avant, d’autre part. [Fig. 4] shows a first right shell 18 extending opposite a first left shell 20. The first left shell 20 has two first opposite left longitudinal edges, an upper edge 22 and a lower edge 24, on the one hand, and an arcuate left edge 28, towards the rear, opposite an indented left edge 30, towards the front, on the other hand.
Aussi, le bord gauche échancré 30 définit une forme circulaire gauche 32, ouverte selon une corde à l’opposé du bord gauche en arc 28. Ainsi, la forme circulaire présente un rayon R et définit un segment circulaire compris entre 180° et 270°.Also, the indented left edge 30 defines a left circular shape 32, open along a chord opposite the arcuate left edge 28. Thus, the circular shape has a radius R and defines a circular segment between 180° and 270° .
À l’opposé, la coquille droite 18 présente deux premiers rebords longitudinaux droit opposés, un rebord supérieur droit 34 et un rebord inférieur droit 36. Elle présente également un bord droit en arc 38, vers l’arrière, opposé à un bord droit échancré 40 orienté vers l’avant et recevant une douille 42. In contrast, the straight shell 18 has two first opposite straight longitudinal edges, an upper right edge 34 and a lower right edge 36. It also has a straight arcuate edge 38, towards the rear, opposite a notched straight edge. 40 oriented towards the front and receiving a socket 42.
Le bord droit échancré 40 définit une forme circulaire droite identique à la forme circulaire gauche 32 et présentant le même rayon R. The indented right edge 40 defines a right circular shape identical to the left circular shape 32 and having the same radius R.
La douille 42 présente un rayon externe voisin du rayon R du bord échancré 40 pour pouvoir être engagée à travers et comme on va l’expliquer ci-après, également à travers le bord échancré gauche 30. The socket 42 has an external radius close to the radius R of the notched edge 40 to be able to be engaged through and as will be explained below, also through the left notched edge 30.
La [Fig. 5] illustre vu de dessus, l’objet de la [Fig. 4] et on y retrouve ainsi, la coquille droite 18 en regard de la coquille gauche 20. Aussi, on observera que les deux coquilles 18, 20, sont sensiblement cintrées, la coquille droite 18 est sensiblement concave, tandis que la coquille gauche 20 est parallèlement sensiblement convexe. On retrouve également sur cette [Fig. 5] la douille 42 engagée à l’intérieur du bord droit échancré 40. Ainsi, les deux coquilles 18, 20 sont appariées de manière que le premier rebord inférieur gauche 24 vienne en appui contre le premier rebord inférieur droit 36, et que le premier rebord supérieur gauche 22 vienne en appui contre le premier rebord supérieur droit 34, tandis que la douille 42 vient s’étendre également à travers le bord gauche échancré 30. [Fig. 5] illustrates seen from above, the object of [Fig. 4] and we thus find the right shell 18 facing the left shell 20. Also, we will observe that the two shells 18, 20 are substantially curved, the right shell 18 is substantially concave, while the left shell 20 is parallel substantially convex. We also find in this [Fig. 5] the socket 42 engaged inside the indented right edge 40. Thus, the two shells 18, 20 are paired so that the first left lower edge 24 comes to bear against the first right lower edge 36, and that the first upper left edge 22 comes to rest against the first upper right edge 34, while the socket 42 also extends through the indented left edge 30.
Un cordon de soudure est alors appliqué à la jointure des deux premiers rebords supérieurs 22, 34 et à la jointure des deux premiers rebords inférieurs 24, 36 pour les solidarisées l’un avec l’autre et former un premier manchon 44 apparaissant alors sur la [Fig. 6], A weld bead is then applied to the joint of the first two upper edges 22, 34 and to the joint of the first two lower edges 24, 36 to secure them together and form a first sleeve 44 then appearing on the [Fig. 6],
Aussi, le premier bord gauche en arc 28 et le premier bord droit en arc 38 délimitent ensemble une première extrémité d’emmanchement 46 sensiblement cylindrique. À l’opposé, les deux premiers bords échancrés 30, 40 forment une première extrémité en Y 48 qui emprisonne alors la douille 42. Also, the first arcuate left edge 28 and the first arcuate right edge 38 together delimit a first substantially cylindrical fitting end 46. In contrast, the first two notched edges 30, 40 form a first Y-shaped end 48 which then traps the socket 42.
Aussi, deux cordons de soudure circulaires sont appliqués à la jointure de la douille 42 et, de la coquille droite 18 et de la coquille gauche 20 respectivement. De la sorte, la douille 42 est totalement solidaire du manchon 44 et elle s’étend transversalement en saillie des deux coquilles 18, 20 sensiblement d’une même longueur. Also, two circular weld beads are applied to the joint of the socket 42 and the right shell 18 and the left shell 20 respectively. In this way, the sleeve 42 is completely integral with the sleeve 44 and it extends transversely projecting from the two shells 18, 20 of substantially the same length.
En outre, on observera que la première extrémité d’emmanchement 46 s’étend selon une direction d’emmanchement E à laquelle les génératrices de cette extrémité s’étendent parallèlement. Les deux premières coquilles 18, 20 étant sensiblement cintrées, la première extrémité en Y 48 s’étend selon une direction de réception H, alors inclinée par rapport à la direction d’emmanchement E In addition, it will be observed that the first fitting end 46 extends in a fitting direction E to which the generating lines of this end extend parallel. The first two shells 18, 20 being substantially curved, the first Y-shaped end 48 extends in a receiving direction H, then inclined relative to the fitting direction E
Partant, l’axe A de la douille 42 est lui-même incliné de la direction d’emmanchement E d’un angle inférieur à 90°. Therefore, the axis A of the socket 42 is itself inclined from the fitting direction E by an angle less than 90°.
La première extrémité d’emmanchement 46 présente une section droite sensiblement identique à la section droite de la première extrémité 12 de l’organe tubulaire longitudinal 10 représenté sur la [Fig. 1 ], The first fitting end 46 has a cross section substantially identical to the cross section of the first end 12 of the longitudinal tubular member 10 shown in [Fig. 1 ],
Plus précisément, la surface cylindrique interne de la première extrémité d’emmanchement 46 présente une section identique à la surface cylindrique externe de la première extrémité 12 de manière à pouvoir, au jeu fonctionnel près, emmancher la première extrémité 12 à l’intérieur de la première extrémité d’emmanchement 46. On retrouve ainsi sur la [Fig. 2] la première extrémité 12 emmanchée dans le manchon 44. Et ils sont alors solidarisés au moyen d’un cordon de soudure appliqué à la jointure entre la première extrémité 12 et les premiers bords en arc 28, 38 du manchon 44.More precisely, the internal cylindrical surface of the first fitting end 46 has a section identical to the external cylindrical surface of the first end 12 so as to be able, except for functional clearance, to press the first end 12 inside the first fitting end 46. We thus find in [Fig. 2] the first end 12 fitted into the sleeve 44. And they are then secured by means of a weld bead applied to the joint between the first end 12 and the first arcuate edges 28, 38 of the sleeve 44.
Le premier manchon 44 présente une longueur L1 , que l’on qualifiera ici de courte.The first sleeve 44 has a length L1, which we will describe here as short.
On obtient de la sorte un premier bras gauche de suspension 45 présentant une première longueur B1 mesurée entre le centre C du support de roue 16 et le centre de la douille 42. We thus obtain a first left suspension arm 45 having a first length B1 measured between the center C of the wheel support 16 and the center of the socket 42.
Aussi, on réalise de la même façon, un bras droit de suspension. Le bras droit et le bras gauche ne sont pas totalement identiques. Aussi, à la base l’organe tubulaire destiné à réaliser le bras gauche n’est pas identique à l’organe tubulaire destiné à réaliser le bras droit. En revanche, organe tubulaire droit est symétrique du bras tubulaire gauche par rapport à un plan médian. Also, we create a right suspension arm in the same way. The right arm and the left arm are not completely identical. Also, basically the tubular organ intended to make the left arm is not identical to the tubular organ intended to make the right arm. On the other hand, the right tubular organ is symmetrical to the left tubular arm in relation to a median plane.
Avantageusement, un même manchon 44 peut être installé à l’extrémité de l’organe tubulaire gauche 10 et à l’extrémité d’un organe tubulaire droit, non représenté. Pour ce faire, le manchon 44 est alors retourné de 180° par rapport à son axe d’emmanchement E pour pouvoir recevoir l’extrémité de l’organe tubulaire droit.Advantageously, the same sleeve 44 can be installed at the end of the left tubular member 10 and at the end of a right tubular member, not shown. To do this, the sleeve 44 is then turned 180° relative to its fitting axis E to be able to receive the end of the right tubular member.
Aussi, les deux bras de suspension, gauche et droit ainsi réalisés sont alors reliés ensemble au moyen d’une traverse non représentée. Les deux extrémités opposées de la traverse sont alors soudées en T sur les organes tubulaires respectivement, en amont des manchons. Also, the two suspension arms, left and right thus produced, are then connected together by means of a crosspiece not shown. The two opposite ends of the crosspiece are then T-welded onto the tubular members respectively, upstream of the sleeves.
Ainsi, les deux bras de suspension sont liés entre eux de manière rigide. On observera alors que les manchons 44 divergent sensiblement l’un par rapport à l’autre. Thus, the two suspension arms are rigidly linked together. We will then observe that the sleeves 44 diverge significantly from each other.
Aussi, les douilles 42 permettent alors de relier à pivotement l’extrémité des bras de suspension sur la caisse. Also, the bushings 42 then make it possible to pivotally connect the end of the suspension arms to the body.
On observera également que le diamètre des bords échancrés 30, 40 peut être ajustés pour recevoir une douille d’un diamètre différent. Ainsi, on ajuste un silentbloc® correspondant au diamètre de la douille pour filtrer différemment les vibrations. It will also be observed that the diameter of the notched edges 30, 40 can be adjusted to accommodate a socket of a different diameter. Thus, we adjust a silentbloc® corresponding to the diameter of the bushing to filter vibrations differently.
L’intérêt de la méthode de fabrication selon l’invention, est de concevoir au moins un deuxième manchon 44’ d’une longueur supérieure à celle du premier manchon 44 représenté sur les [Fig. 4], [Fig. 5] et [Fig. 6] et installé sur l’organe tubulaire 10 de la [Fig. 2], The advantage of the manufacturing method according to the invention is to design at least a second sleeve 44' of a length greater than that of the first sleeve 44 shown in [Fig. 4], [Fig. 5] and [Fig. 6] and installed on the tubular member 10 of [Fig. 2],
On se reportera sur la [Fig. 3] sur laquelle les éléments jouant le même rôle que ceux de l’objet de la [Fig. 2] présentent la même référence assortie d’un signe prime : « ‘ ». Ainsi, la [Fig. 3] montre précisément le deuxième manchon 44’ dans lequel est emmanchée une deuxième extrémité 12’ d’un deuxième organe tubulaire 10’ pour former un deuxième bras gauche de suspension 45’. We will refer to [Fig. 3] on which the elements playing the same role as those of the object of [Fig. 2] present the same reference accompanied by a prime sign: “'”. Thus, [Fig. 3] shows precisely the second sleeve 44' in which a second end 12' of a second tubular member 10' is fitted to form a second left suspension arm 45'.
Ainsi, le deuxième manchon 44’ est réalisé de manière analogue au premier manchon 44, par découpage-emboutissage de plaque métallique, puis de soudage. En revanche, ses dimensions sont différentes. En effet, il présente une longueur L2, supérieur à la longueur L1 du premier manchon 44. Thus, the second sleeve 44' is produced in a manner similar to the first sleeve 44, by cutting-stamping a metal plate, then welding. However, its dimensions are different. In fact, it has a length L2, greater than the length L1 of the first sleeve 44.
Aussi, il est installé à l’extrémité 12’ du deuxième organe tubulaire 10’ de la même façon. Also, it is installed at the 12’ end of the second tubular member 10’ in the same way.
En conséquence, on obtient un deuxième bras gauche de suspension 45’ présentant une deuxième longueur B2 mesurée entre le centre C’ du support de roue 16’ et le centre de la douille 42’. La deuxième longueur B2 est supérieure à la première longueur B1 . Consequently, we obtain a second left suspension arm 45' having a second length B2 measured between the center C' of the wheel support 16' and the center of the socket 42'. The second length B2 is greater than the first length B1.
En conséquence, le support de roue 16’, et partant la roue, non représentée, est plus éloigné de l’axe d’articulation de la deuxième douille 42’ qu’elle ne l’est avec le premier bras 45. Consequently, the wheel support 16', and hence the wheel, not shown, is further away from the articulation axis of the second sleeve 42' than it is with the first arm 45.
Aussi, un deuxième bras droit est réalisé de la même façon que le deuxième bras gauche et ils sont alors reliés ensemble au moyen d’une traverse également. Also, a second right arm is made in the same way as the second left arm and they are then connected together by means of a crosspiece as well.
Ainsi, on fabrique différentes structures d’essieu torsible avec des paires d’organes tubulaires communs et des manchons de différentes longueurs pour réaliser des bras de suspension plus ou moins long. Ces différents manchons sont réalisés à des coûts avantageux et sont ajustés sur des organes tubulaires communs en fonction des types de véhicule automobile fabriqués. Thus, different twistable axle structures are manufactured with pairs of common tubular members and sleeves of different lengths to produce suspension arms of varying length. These different sleeves are produced at advantageous costs and are adjusted to common tubular members depending on the types of motor vehicle manufactured.

Claims

REVENDICATIONS
[Revendication 1] [ Procédé de fabrication de structures d’essieu torsible de véhicule automobile comprenant les étapes suivantes : [Claim 1] [Process for manufacturing twistable axle structures of a motor vehicle comprising the following steps:
- on fournit des paires de premiers bras (45) reliés entre eux d’une première longueur adaptées à relier les deux roues et la caisse d’un premier type de véhicule ; - pairs of first arms (45) connected to each other of a first length are provided, adapted to connect the two wheels and the body of a first type of vehicle;
- on fournit des paires de deuxième bras (45’) reliés entre eux d’une deuxième longueur supérieure à ladite première longueur, adaptées à relier les deux roues et la caisse d’un deuxième type de véhicule ; caractérisé en ce qu’on fournit : - we provide pairs of second arms (45') connected to each other of a second length greater than said first length, adapted to connect the two wheels and the body of a second type of vehicle; characterized in that we provide:
- une pluralité de paires d’organes tubulaires longitudinaux (10, 10’) d’une même longueur, chacun des organes tubulaires présentant une première extrémité (12, 12’) opposée à une seconde extrémité (14, 14’) ; - a plurality of pairs of longitudinal tubular members (10, 10') of the same length, each of the tubular members having a first end (12, 12') opposite a second end (14, 14');
- des paires de manchons courts (44) et des paires de manchons longs (44’) ; et en ce qu’on installe les manchons courts (44) aux premières extrémités (12) d’organes tubulaires de paires d’organes tubulaires, pour fournir lesdites paires de premiers bras (45), tandis qu’on installe les manchons longs (44’) aux premières extrémités (12’) d’organes tubulaires d’autres paires d’organes tubulaires pour fournir lesdites paires de deuxièmes bras (45’). - pairs of short sleeves (44) and pairs of long sleeves (44’); and in that the short sleeves (44) are installed at the first ends (12) of tubular members of pairs of tubular members, to provide said pairs of first arms (45), while the long sleeves ( 44') to the first ends (12') of tubular members of other pairs of tubular members to provide said pairs of second arms (45').
[Revendication 2] Procédé de fabrication selon la revendication 1 , caractérisé en ce que chacun des manchons (44, 44’) desdites paires de manchons comprend une extrémité d’emmanchement (46) et à l’opposé, une extrémité en Y (48) pour recevoir une douille (42) s’étendant transversalement. [Claim 2] Manufacturing method according to claim 1, characterized in that each of the sleeves (44, 44') of said pairs of sleeves comprises a fitting end (46) and oppositely, a Y-shaped end (48 ) to receive a socket (42) extending transversely.
[Revendication 3] Procédé de fabrication selon la revendication 2, caractérisé en ce que ladite extrémité d’emmanchement (46) est sensiblement cylindrique. [Claim 3] Manufacturing method according to claim 2, characterized in that said fitting end (46) is substantially cylindrical.
[Revendication 4] Procédé de fabrication selon la revendication 3, caractérisé en ce que ladite extrémité d’emmanchement (46) est définie par des génératrices parallèles à une direction d’emmanchement E, tandis que ladite extrémité en Y (48) est inclinée par rapport à ladite direction d’emmanchement. [Claim 4] Manufacturing method according to claim 3, characterized in that said fitting end (46) is defined by generators parallel to a fitting direction E, while said Y-shaped end (48) is inclined by relative to said fitting direction.
[Revendication 5] Procédé de fabrication selon l’une quelconque des revendications 2 à 4, caractérisé en ce qu’on fournit deux pièces en coquille (18, 20) présentant chacune deux rebords longitudinaux opposés (34, 36 ; 22, 24) et un bord en arc (38 ; 28) opposé à un bord échancré (40 ; 30), et en ce qu’on relie ensemble lesdites deux pièces (18, 20) respectivement par leurs deux rebords opposés (34, 36 ; 22, 24) pour former chacun des manchons desdites paires de manchons. [Claim 5] Manufacturing method according to any one of claims 2 to 4, characterized in that two shell parts (18, 20) are provided each having two opposite longitudinal edges (34, 36; 22, 24) and a board in an arc (38; 28) opposite a notched edge (40; 30), and in that said two pieces (18, 20) are connected together respectively by their two opposite edges (34, 36; 22, 24) to forming each of the sleeves of said pairs of sleeves.
[Revendication 6] Procédé de fabrication selon la revendication 5, caractérisé en ce que les bords échancrés (30, 40) desdites deux pièces (20, 18) définissent une forme circulaire comprise entre un demi-cercle et trois quarts de cercle. [Claim 6] Manufacturing method according to claim 5, characterized in that the notched edges (30, 40) of said two parts (20, 18) define a circular shape between a semi-circle and three quarters of a circle.
[Revendication 7] Procédé de fabrication selon l’une quelconque des revendications 1 à 6, caractérisé en ce qu’on soude les manchons (44, 44’) aux premières extrémités (12, 12’) des organes tubulaires (10, 10’) pour les installer. [Claim 7] Manufacturing method according to any one of claims 1 to 6, characterized in that the sleeves (44, 44') are welded to the first ends (12, 12') of the tubular members (10, 10' ) to install them.
[Revendication 8] Procédé de fabrication selon l’une quelconque des revendications 1 à 7, caractérisé en ce qu’on fournit une pluralité de traverses pour relier ensemble les bras (45, 45’) de chacune desdites paires de premiers et de deuxièmes bras. [Claim 8] Manufacturing method according to any one of claims 1 to 7, characterized in that a plurality of crosspieces is provided for connecting together the arms (45, 45') of each of said pairs of first and second arms .
[Revendication 9] Procédé de fabrication selon la revendication 8, caractérisé en ce qu’on soude lesdites traverses à chacune desdites paires de premiers (45) et de deuxièmes (45’) bras. [Claim 9] Manufacturing method according to claim 8, characterized in that said crosspieces are welded to each of said pairs of first (45) and second (45') arms.
[Revendication 10] Procédé de fabrication selon l’une quelconque des revendications 1 à 9, caractérisé en ce qu’on installe des supports de roue (16, 16’) aux secondes extrémités (14, 14’) des organes tubulaires desdites paires d’organes tubulaires. [Claim 10] Manufacturing method according to any one of claims 1 to 9, characterized in that wheel supports (16, 16') are installed at the second ends (14, 14') of the tubular members of said pairs of tubular organs.
[Revendication 11] Kit de fabrication de structure d’essieu torsible de véhicule automobile caractérisé en ce qu’il comprend : [Claim 11] Kit for manufacturing a twistable axle structure of a motor vehicle, characterized in that it comprises:
- une paire d’organes tubulaires longitudinaux (10, 10’) d’une même longueur adaptés à être reliés entre eux, chacun des organes tubulaires présentant une première extrémité (12, 12’) opposée à une seconde extrémité (14, 14’) ; - a pair of longitudinal tubular members (10, 10') of the same length adapted to be connected together, each of the tubular members having a first end (12, 12') opposite a second end (14, 14' ) ;
- une paire de manchons courts (44) et une paire de manchons longs (44’) pour pouvoir installer les manchons courts (44) aux premières extrémités (12) des organes tubulaires et fournir des paires de premiers bras (45) reliés ensemble, ou pour pouvoir installer les manchons longs (44’) aux premières extrémités (12’) des organes tubulaires et fournir des paires de deuxièmes bras (45’) reliés ensemble. - a pair of short sleeves (44) and a pair of long sleeves (44') to be able to install the short sleeves (44) at the first ends (12) of the tubular members and provide pairs of first arms (45) connected together, or to be able to install the long sleeves (44') at the first ends (12') of the tubular members and provide pairs of second arms (45') connected together.
[Revendication 12] Structure d’essieu torsible de véhicule automobile comprenant : [Claim 12] Torsible axle structure of a motor vehicle comprising:
- une paire de premiers bras (45) reliés entre eux d’une première longueur adaptée à relier les deux roues et la caisse d’un premier véhicule ; ou, - une paire de deuxième bras (45’) reliés entre eux d’une deuxième longueur supérieure à ladite première longueur, adaptée à relier les deux roues et la caisse d’un deuxième véhicule ; caractérisée en ce qu’elle comprend une paire d’organes tubulaires longitudinaux (10, 10’) d’une même longueur, chacun des organes tubulaires présentant une première extrémité (12, 12’) opposée à une seconde extrémité (14, 14’) ; et, - a pair of first arms (45) connected together of a first length adapted to connect the two wheels and the body of a first vehicle; Or, - a pair of second arms (45') connected together of a second length greater than said first length, adapted to connect the two wheels and the body of a second vehicle; characterized in that it comprises a pair of longitudinal tubular members (10, 10') of the same length, each of the tubular members having a first end (12, 12') opposite a second end (14, 14'); And,
- une paire de manchons courts (44) installés aux premières extrémités (12) des organes tubulaires de ladite paire d’organes tubulaires, pour former lesdites paires de premiers bras (45) ; ou, - a pair of short sleeves (44) installed at the first ends (12) of the tubular members of said pair of tubular members, to form said pairs of first arms (45); Or,
- une paire de manchons longs (44’) installés aux premières extrémités (12’) des organes tubulaires de ladite paire d’organes tubulaires pour former lesdites paires de deuxièmes bras (45’). - a pair of long sleeves (44') installed at the first ends (12') of the tubular members of said pair of tubular members to form said pairs of second arms (45').
PCT/EP2023/087059 2022-12-23 2023-12-20 Method for manufacturing torsionally flexible axle structures WO2024133531A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FRFR2214379 2022-12-23
FR2214379A FR3144101A1 (en) 2022-12-23 2022-12-23 Process for manufacturing twistable axle structures

Publications (1)

Publication Number Publication Date
WO2024133531A1 true WO2024133531A1 (en) 2024-06-27

Family

ID=86331729

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2023/087059 WO2024133531A1 (en) 2022-12-23 2023-12-20 Method for manufacturing torsionally flexible axle structures

Country Status (2)

Country Link
FR (1) FR3144101A1 (en)
WO (1) WO2024133531A1 (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20060021999A (en) * 2004-09-06 2006-03-09 현대모비스 주식회사 Torsion beam type suspension
FR2949995B1 (en) * 2009-09-11 2011-12-16 Peugeot Citroen Automobiles Sa TUBULAR STRUCTURE FOR CARRYING OUT, IN PARTICULAR, AN AXLE OF A ROLLING GEAR OF A MOTOR VEHICLE
DE112015004708T5 (en) * 2014-10-14 2017-07-13 Magna International Inc. VEHICLE-beam axle ARRANGEMENT
DE102015220245A1 (en) * 2015-10-16 2017-04-20 Zf Friedrichshafen Ag Twist-beam axle, method for producing a torsion-beam axle and vehicle with a torsion-beam axle
DE102016206283A1 (en) * 2016-04-14 2017-10-19 Zf Friedrichshafen Ag Twist-beam axle, method for producing a torsion-beam axle and vehicle with a torsion-beam axle
EP3858648A1 (en) * 2020-01-30 2021-08-04 FCA Italy S.p.A. Motor-vehicle rear suspension system having a modular structure which can be configured as a twist axle suspension or as a rigid axle suspension

Also Published As

Publication number Publication date
FR3144101A1 (en) 2024-06-28

Similar Documents

Publication Publication Date Title
EP1827880A1 (en) Flexible axle comprising a cross-member with trapezoid cross-section, corresponding cross-member, vehicle and manufacturing method
FR2644733A1 (en) REAR TRAIN OF A MOTOR VEHICLE
EP3083294A1 (en) Suspension assembly for a motor vehicle, connecting ball joint for the assembly and corresponding installation method
EP1454776B1 (en) Twist-beam axle and method of making the cross-beam
EP1785289B1 (en) Rear suspension of a motor vehicle
WO2024133531A1 (en) Method for manufacturing torsionally flexible axle structures
FR2899516A1 (en) REAR VEHICLE TRAIN, IN PARTICULAR OF A MOTOR VEHICLE, AND VEHICLE EQUIPPED WITH SUCH A REAR TRAIN
WO2005042274A1 (en) Flexible axle having a transverse stiffness which is increased with the aid of at least one spring-cup-forming part, spring cup and corresponding vehicle
WO2005035284A2 (en) Motor vehicle steering axle
FR2891771A1 (en) MOTOR VEHICLE REAR AXLE TRAIN
FR2882693A1 (en) AXLE IN WHICH THE LONGITUDINAL ARMS ARE FITTED TO THE CHASSIS THROUGH SINTERED BUSHINGS, METHOD OF ASSEMBLY AND VEHICLE CORRESPONDING
WO2024133522A1 (en) Coupling sleeve for t-coupling tubular parts of a torsion axle
FR3105100A1 (en) Trailer
FR3099089A1 (en) Bearing and adjustment piece for multi-arm gear
FR2811938A1 (en) Rear set of wheels for cars has each end of the cross-member engaged in a groove of respective suspension arm and fixed by a screw and nut assembly
WO2024133526A1 (en) Method for producing torsionally flexible axle structures
EP0729876A1 (en) Rear suspension for a motor vehicle
FR3070142B1 (en) MOTOR VEHICLE CROSSING SYSTEM WITH INSERTS FOR A TRANSVERSE GUIDE BAR
FR3070141B1 (en) MOTOR VEHICLE CROSSING SYSTEM RECEIVING A TRANSVERSE GUIDE BAR
WO2009068781A2 (en) Motor vehicle rear suspension with toe-in control link
EP2234827B1 (en) Motor vehicle rear suspension with toe and camber control, and link tailored to such a suspension
FR3123019A1 (en) REAR AXLE FOR MOTOR VEHICLE OF THE TYPE WITH TWO LONGITUDINAL PULLING ARMS WITH IMPROVED ELASTIC BEHAVIOR
WO2022253640A1 (en) Rear axle for a motor vehicle, of the type with two longitudinal trailing arms having improved elastic behaviour
EP3686085A1 (en) Motor vehicle comprising a reinforcement element between a cradle and a wheel yoke
FR2753932A1 (en) Automobile wheel suspension, especially for electric automobiles