EP1412643A1 - Stress-free mechanical assembly - Google Patents

Stress-free mechanical assembly

Info

Publication number
EP1412643A1
EP1412643A1 EP02791494A EP02791494A EP1412643A1 EP 1412643 A1 EP1412643 A1 EP 1412643A1 EP 02791494 A EP02791494 A EP 02791494A EP 02791494 A EP02791494 A EP 02791494A EP 1412643 A1 EP1412643 A1 EP 1412643A1
Authority
EP
European Patent Office
Prior art keywords
assembly
cylindrical
positioning
fixing
fixing member
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP02791494A
Other languages
German (de)
French (fr)
Inventor
Romain Casu
Thierry Christiaens
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Renault SAS
Original Assignee
Renault SAS
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 SAS filed Critical Renault SAS
Publication of EP1412643A1 publication Critical patent/EP1412643A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
    • F16B5/02—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread
    • F16B5/0216—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread the position of the plates to be connected being adjustable
    • F16B5/0225—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread the position of the plates to be connected being adjustable allowing for adjustment parallel to the plane of the plates

Definitions

  • the invention relates to a mechanical assembly.
  • the invention relates more particularly to a mechanical assembly comprising a first element and a second element assembled to each other by means of first and second respective flat contact faces, of the type which includes means for positioning the elements relative to each other in the plane of the contact faces and of the means for fixing from one element to the other in a fixing direction perpendicular to the plane of the contact faces, of the type in which the means of positioning include at least one cylindrical positioning member, which extends perpendicularly from the first contact face, and a hole in the second element which opens into the second contact face and which is intended to receive the cylindrical member, and of the type in which the fixing means comprise at least one fixing member, which extends perpendicularly from the first contact face, and a bore in the second element which opens into the second contact face and which is intended to receive the fixing member.
  • the two holes may for example be substantially cylindrical and be of a diameter greater than that of the cylindrical members so to allow the assembly to be positioned by gravity along the generators of contact between the members and the cylindrical holes.
  • At least one of the cylindrical positioning members also forms a fixing member and it is for example made up of a stud which is intended to allow the clamping of the second element on the first by means of a nut.
  • An assembly of this type has on the one hand the disadvantage of allowing positioning only in a single and imposed position, and on the other hand of not guaranteeing a certain positioning of the second element relative to the first when the assembly is subjected to various mechanical stresses such as expansion or vibrations.
  • one of the holes may for example be substantially cylindrical and be of a diameter greater than that of one of the cylindrical members, and the other hole may be made under the form of an oblong hole of width greater than the diameter of the other cylindrical member.
  • At least one of the cylindrical positioning members also forms a fixing member and it is for example constituted by a stud which is intended to allow the tightening of the second element on the first by means of a nut.
  • An assembly of this type has on the one hand the drawback of imposing an orientation of the oblong hole of the second element along the possible direction of deformation of the assembly, and on the other hand of being costly to produce, the realization of said oblong hole being generally more expensive than that of a simple drilling.
  • the invention proposes an assembly of the type described above, using only cylindrical holes and allowing both precise positioning and optimal position maintenance when the assembly is stressed.
  • the invention provides an assembly of the type described above, characterized in that the positioning means comprise " at least four cylindrical holes of the second element, which are tangent internally to as many cylindrical positioning members of the first element, and whose axes are offset relative to the axes of the cylindrical members for positioning in respective directions of offset which intersect at a point in a zone of the second element in which the stresses are zero when the assembly is requested.
  • the cylindrical members for positioning the first element are each of a diameter which is less than the diameter of the associated cylindrical hole of the first element and which is intended to take account of the deformations of the second element when the assembly is requested,
  • cylindrical members for positioning the first element are offset each at a distance from the point of the zone of zero stress of the second element which is provided to take account of the deformations of the second element when the assembly is stressed,
  • At least one fixing member consists of a cylindrical positioning member and at least one bore consists of an associated cylindrical hole
  • the assembly comprises a centering member, q which extends perpendicularly from the first contact face, .. and a coaxial centering hole of the second element which opens into the second contact face, the axes of which coincide with the point of the stress zone n ulle of the second element,
  • At least one fixing member consists of the centering member and at least one bore consists of the associated centering hole, '
  • At least one fixing member comprising an axial immobilization means, in particular a stud or a screw,
  • At least one fixing member comprises a means of radial immobilization, in particular a rod.
  • FIG. 1 is a front view in a direction perpendicular to the plane of the contact faces of a first assembly according to a prior state of the art
  • FIG. 2 is a front view in a direction perpendicular to the plane of the contact faces of a second assembly according to a prior state of the art
  • FIG. 3 is a front view in a direction perpendicular to the plane of the contact faces of an assembly according to a first embodiment of the invention, shown in the rest position,
  • - Figure 4 is a view of the assembly of Figure 3, shown in position biasing
  • - Figure 5 is a front view in a direction perpendicular to the plane of the contact faces of an assembly according to a second embodiment of the invention, shown in the rest position.
  • each assembly 10 comprises a first element 12 and second element 14 which are assembled to one another by means of first and second planar faces 16, 18 respective contacts.
  • each assembly 10 comprises means for positioning the elements 12, 14 relative to each other in the plane of the contact faces 16, 18 and it comprises means for fixing an element to the other in a direction "D" of fixing perpendicular to the plane of the contact faces 16, 18.
  • the positioning means comprise at least one cylindrical positioning member 20 which extends perpendicularly from the first face 16 of contact, and a hole 22 of the second element 14 which opens into the second contact face 18 and which is intended to receive the cylindrical member 20.
  • the fixing means comprise at least one fixing member 24, which extends perpendicularly from the first contact face 16, and a bore 26 of the second element 14 which opens into the second contact face 18 and which is intended to receive the fixing member 24.
  • Figure 1 illustrates more particularly an assembly 10, for which the common plane of the contact faces 16, 18 is intended to be oriented substantially in the vertical direction "V".
  • the positioning means of this assembly 10 comprise two cylindrical positioning members 20, which extend perpendicularly from the first contact face 16, and cylindrical holes 22 of the second element 14 which open into the second face 18 contact and which are each intended to receive an associated cylindrical member 20.
  • the holes 22 are each of a diameter greater than the associated cylindrical member 20, so that when the assembly 10 is placed in position in the vertical direction "V", each cylindrical member 20 for positioning is in contact with the associated hole 22 via a common generator "G", the trace of which is seen in FIG. 1.
  • the fixing means are merged with the positioning means.
  • Bodies 24 for fixing the first element 12 are merged with the members 20 for positioning, and holes 26 for the second element 14 are merged with the cylindrical holes 22 for positioning.
  • the fixing members 24 are for example made up of studs which allow the fixing of the second element 14 in the form of a plate. on the first element 12 by tightening a nut (not shown) which is arranged in contact with the back of the second element 14.
  • This configuration has on the one hand the disadvantage of requiring that the assembly 10 be arranged vertically, and on the other hand the disadvantage of allowing relative movement of the elements 12 and 14 relative to each other when assembly
  • FIG. 2 illustrates an assembly 10, for which the positioning means comprise two cylindrical positioning members 20 which extend perpendicularly from the first contact face 16.
  • the second element 18 has a cylindrical hole 22 and an oblong hole 23 which open into the second contact face 18 and which are each intended to receive an associated cylindrical member 20.
  • the cylindrical hole 22 is of a diameter greater than the associated cylindrical member 20 and the oblong hole 23 is of a width substantially equal to the diameter of the associated fixing member 20, so that when the elements 12 and 14 are assembled, the assembly 10 is positioned precisely by the opposite faces 25 of the oblong hole 23.
  • the fixing means are merged with the positioning means.
  • Fastening members 24 for the first element 12 are combined at least one of the positioning members 20, and holes 26 for the second element 14 are coincident with at least one of the cylindrical holes 23 and 23 for positioning.
  • the fixing members 24 are for example made up of studs which allow the fixing of the second plate-shaped element 14 on the first element 12 by tightening a nut (not shown) which is arranged in contact with the back of the second element 14.
  • This configuration has on the one hand the disadvantage of being costly to carry out, since the machining of the oblong hole 23 is of a higher cost than that of a cylindrical hole, and on the other hand it has the disadvantage to need to match the main direction of deformation according to which the assembly is liable to deform with the general direction of the oblong hole 23.
  • the invention proposes to remedy the drawbacks of the above-mentioned assemblies by proposing an assembly 10 which can be declined according to two embodiments shown in FIGS. 3 to 5.
  • the invention proposes an assembly 10 of the general type described above, which is characterized in that the positioning means comprise at least four cylindrical holes 22a, 22b, 22c, 22d of the second element 14, which are tangent internally to as many cylindrical members 20a, 20b, 20c, 20d for positioning the first element 12, and whose axes Xa, Xb, Xc, Xd, are offset relative to the axes Ya , Yb, Yc, Yd of the cylindrical members 20a, 20b, 20c, 20d of positioning in respective directions Za, Zb, Zc, Zd of offset which are intersecting at a point "N" of a zone of the second element 14 in which the stresses are zero when the assembly 10 is stressed.
  • the positioning means comprise at least four cylindrical holes 22a, 22b, 22c, 22d of the second element 14, which are tangent internally to as many cylindrical members 20a, 20b, 20c, 20d for positioning the first element 12, and whose axes Xa, Xb, Xc
  • cylindrical members 20a, 20b, 20c, 20d for positioning the first element 12 are each of a diameter which is less than the diameter of the associated cylindrical hole 22a, 22b, 22c, 22d of the second element 14 and which is designed to take account of the deformations of the second element 14 when the assembly 10 is stressed, as shown in FIG. 4.
  • cylindrical members 20a, 20b, 20c, 20d for positioning the first element 12 are each offset at a distance Ra, Rb, Rc, Rd respectively from the point 'N "of the zero stress zone of the second element 14 which is designed to take account of the deformations of the second element 14 when the assembly 10 is stressed
  • this configuration advantageously allows, in a rest configuration of the assembly 10 which corresponds in particular to the mounting of the second element 14 on the first element 12, that all the cylindrical members 20a, 20b, 20c, 20d for positioning the first element 12 are effectively tangent to the cylindrical holes 22a, 22b, 22c, 22d.
  • At least one fixing member consists of a cylindrical member 20a, 20b, 20c, 20d for positioning and at least one associated drilling to the fixing member consists of an associated cylindrical hole 22a, 22b, 22c, 22d.
  • each cylindrical member 20a, 20b, 20c, 20d for positioning constitutes a fixing member.
  • each cylindrical member 20a, 20b, 20c, 20d for positioning includes a means of axial immobilization of the second element 14, for example a stud or a screw which is intended to allow the tightening of the second element 14 against the first element 12, or a radial immobilization means, such as a rod which is intended to cooperate with the walls of the associated cylindrical hole 22a, 22b, 22c, 22d to immobilize the second element 14 relative to the first element 12.
  • the assembly 10 comprises a centering member 28, which extends perpendicularly from the first contact face 16, and a hole 30 of coaxial centering of the second element 14 which opens into the second contact face 18.
  • the axes (not shown) of the centering member 28 and of the centering hole 30 pass substantially through the point "N" of the zone of zero stress of the second element 14.
  • the centering member 28 is received with clearance in the centering hole 30 to allow the mounting of the second element 14 on the first element 12.
  • this clearance is not necessarily high, since when the assembly 10 is stressed mechanically as shown in Figure 4, the area of zero stress in which the centering member 28 is arranged and the centering hole 30 is not stressed.
  • the assembly 10 can be formed at rest by mounting the second element 14 on the first element 12, as shown in FIG. 3.
  • the second element 14 is first placed in position on the centering member 28 which may for example be longer than the cylindrical members 20a, 20b, 20c, 20d for positioning.
  • the second element 14 is pivoted in a plane parallel to the plane of the contact faces 16, 18 so that the cylindrical holes 22a, 22b, 22c, 22d of the second element 14 come opposite the cylindrical members 20a, 20b, 20c, 20d of the first element 12.
  • the second element 18 is lowered so that the contact faces 16, 18 are pressed against each other and that the cylindrical members 20a, 20b, 20c, 20d for positioning are tangent with the cylindrical holes 22a, 22b, 22c, 22d.
  • the centering member 28 preferably constitutes a radial or axial fixing member in the same way as the cylindrical members 20a, 20b, 20d in position.
  • the assembly 10 when the assembly 10 is stressed mechanically as illustrated in FIG. 4, the second element 14 does not stress the cylindrical members 20a, 20b, 20c, 20d, because the position of the axes Ya, Yb, Yc, Yd of the latter moves along the offset directions Za, Zb, Zc, Zd while remaining inside the cylindrical holes 22a, 22b, 22c, 22d.
  • the assembly 10 has no centering member. In this configuration, the assembly 10 can be formed at rest by mounting the second element 14 on the first element 12 so that the cylindrical holes 22a, 22b, 22c, 22d of the second element 14 come opposite the cylindrical members 20a, 20b, 20c, 20d of the first element 12.
  • the second element 18 is lowered so that the contact faces 1-6, 18 are pressed against each other and that the cylindrical members 20a, 20b, 20c, 20d for positioning are tangent with the holes cylindrical 22a, 22b, 22c, 22d. Finally, the second element 14 is clamped on the first element 12.
  • the second element 14 does not stress the cylindrical members 20a, 20b, 20c, 20d, because the position (not shown) of the axes Ya, Yb, Yc, Yd of the latter evolves along the directions Za, Zb, Zc, Zd of offset while remaining inside the cylindrical holes 22a, 22b, 22c, 22d.
  • the invention therefore makes it possible to constitute an assembly 10 whose attachment points are not stressed when the assembly 10 is mechanically stressed. As such, it is applicable to a large number of situations, in particular in the context of assemblies 10 implemented in automobile construction.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Connection Of Plates (AREA)

Abstract

The invention concerns a mechanical assembly (10) comprising first (12) and second (14) elements mutually assembled via respective first (16) and second (18) planar contact surfaces, comprising fixing means including at least a fixing member extending perpendicularly from the first contact surface (16), and a perforation of the second element (14) which emerges into the second contact surface (18) and which is designed to receive the fixing member. The invention is characterised in that it comprises at least three cylindrical holes (22a, 22b, 22c, 22d) for positioning the second element (14), internally tangent to as many cylindrical members (20a, 20b, 20c, 20d) for positioning the first element (12), and whereof the axes (Xa, Xb, Xc, Xd) are offset relative to the axes (Ya, Yb, Yc, Yd) of the positioning cylindrical members (20a, 20b, 20c, 20d) along respective offsetting directions (Za, Zb, Zc, Zd) which intersect in a point (N) of a zone of the second element (14) wherein the stresses are null when the assembly (10) is stressed.

Description

"Assemblage mécanique sans contraintes" "Mechanical assembly without constraints"
L'invention concerne un assemblage mécanique. L'invention concerne plus particulièrement un assemblage mécanique comportant un premier élément et un second élément assemblés l'un à l'autre par l'intermédiaire de première et seconde faces planes de contact respectives, du type qui comporte des moyens de mise en position des éléments l'un par rapport à l'autre dans le plan des faces de contact et des moyens de fixation d'un élément à l'autre suivant une direction de fixation perpendiculaire au plan des faces de contact, du type dans lequel les moyens de mise en position comportent au moins un organe cylindrique de mise en position, qui s'étend perpendiculairement à partir de la première face de contact, et un trou d u second élément qui débouche dans la seconde face de contact et qui est destiné à recevoir l'organe cylindrique, et du type dans lequel les moyens de fixation comportent au moins un organe de fixation , qui s'étend perpendiculairement à partir de la première face de contact, et un perçage du second élément qui débouche dans la seconde face de contact et qui est destiné à recevoir l'organe de fixation.The invention relates to a mechanical assembly. The invention relates more particularly to a mechanical assembly comprising a first element and a second element assembled to each other by means of first and second respective flat contact faces, of the type which includes means for positioning the elements relative to each other in the plane of the contact faces and of the means for fixing from one element to the other in a fixing direction perpendicular to the plane of the contact faces, of the type in which the means of positioning include at least one cylindrical positioning member, which extends perpendicularly from the first contact face, and a hole in the second element which opens into the second contact face and which is intended to receive the cylindrical member, and of the type in which the fixing means comprise at least one fixing member, which extends perpendicularly from the first contact face, and a bore in the second element which opens into the second contact face and which is intended to receive the fixing member.
On connaît de nombreux exemples d'assemblages mécaniques de ce type.Many examples of mechanical assemblies of this type are known.
Il est par exemple connu des assemblages comportant deux organes cylindriques, portés par le premier élément, qui sont destinés à être reçus dans deux trous du second élément.It is for example known assemblies comprising two cylindrical members, carried by the first element, which are intended to be received in two holes in the second element.
Dans le cas spécifique d'un assemblage de deux éléments en forme de plaque dont le plan commun des faces de contact est sensiblement vertical, les deux trous peuvent par exemple être sensiblement cylindriques et être d'un diamètre supérieu r à celui des organes cylindriques afin de permettre la mise en position de l'assemblage par gravité suivant les génératrices comm unes de contact des organes et des trous cylindriques. Au moins un des organes cylindriques de mise en position forme aussi organe de fixation et il est par exemple constitué d'un goujon qui est destiné à permettre le serrage du second élément sur le premier par l'intermédiaire d'un écrou.In the specific case of an assembly of two plate-shaped elements whose common plane of the contact faces is substantially vertical, the two holes may for example be substantially cylindrical and be of a diameter greater than that of the cylindrical members so to allow the assembly to be positioned by gravity along the generators of contact between the members and the cylindrical holes. At least one of the cylindrical positioning members also forms a fixing member and it is for example made up of a stud which is intended to allow the clamping of the second element on the first by means of a nut.
Un assemblage de ce type présente d'une part l'inconvénient de ne permettre la mise en position que selon une position unique et imposée, et d'autre part de ne pas garantir un positionnement certain du second élément par rapport au premier lorsque l'assemblage est soumis à des sollicitations mécaniques diverses telles que la dilatation ou des vibrations.An assembly of this type has on the one hand the disadvantage of allowing positioning only in a single and imposed position, and on the other hand of not guaranteeing a certain positioning of the second element relative to the first when the assembly is subjected to various mechanical stresses such as expansion or vibrations.
Dans le cas d'un assemblage de deux éléments suivant une orientation quelconque, un des trous peut par exemple être sensiblement cylindrique et être d'un diamètre supérieur à celui d'un des organes cylindriques, et l'autre trou peut être réalisé sous la forme d'un trou oblong de largeur supérieure au diamètre de l'autre organe cylindrique. Au moins un des organes cylindriques de mise en position forme aussi organe de fixation et il est par exemple constitué d'un goujon qui est destiné à permettre le serrage du second élément sur le premier par l'intermédiaire d'un écrou.In the case of an assembly of two elements in any orientation, one of the holes may for example be substantially cylindrical and be of a diameter greater than that of one of the cylindrical members, and the other hole may be made under the form of an oblong hole of width greater than the diameter of the other cylindrical member. At least one of the cylindrical positioning members also forms a fixing member and it is for example constituted by a stud which is intended to allow the tightening of the second element on the first by means of a nut.
Un assemblage de ce type présente d'une part l'inconvénient d'imposer une orientation du trou oblong du second élément suivant la direction possible de déformation de l'assemblage, et d'autre part d'être coûteuse à réaliser, la réalisation dudit trou oblong étant généralement plus onéreuse que celle d'un simple perçage. Pour remédier à ces inconvénients l'invention propose un assemblage du type décrit précédemment ne mettant en œuvre que des trous cylindriques et permettant à la fois un positionnement précis et un maintien en position optimal lorsque l'assemblage est sollicité. Dans ce but, l'invention propose un assemblage du type décrit précédemment, caractérisé en ce que les moyens de mise en position comportent" au moins quatre trous cylindriques du second élément, qui sont tangents intérieurement à autant d'organes cylindriques de mise en position du premier élément, et dont les axes sont déportés par rapport aux axes des organes cylindriques de mise en position suivant des directions respectives de déport qui sont sécantes en un point d'une zone d u second élément da ns laquelle les contraintes sont n ulles lorsque l'assemblage est sollicité.An assembly of this type has on the one hand the drawback of imposing an orientation of the oblong hole of the second element along the possible direction of deformation of the assembly, and on the other hand of being costly to produce, the realization of said oblong hole being generally more expensive than that of a simple drilling. To overcome these drawbacks, the invention proposes an assembly of the type described above, using only cylindrical holes and allowing both precise positioning and optimal position maintenance when the assembly is stressed. To this end, the invention provides an assembly of the type described above, characterized in that the positioning means comprise " at least four cylindrical holes of the second element, which are tangent internally to as many cylindrical positioning members of the first element, and whose axes are offset relative to the axes of the cylindrical members for positioning in respective directions of offset which intersect at a point in a zone of the second element in which the stresses are zero when the assembly is requested.
Selon d'autres caractéristiques de l'invention :According to other characteristics of the invention:
- les organes cylind riques de mise en position d u, premier élément sont chacu n d'un d iamètre q ui est inférieur au d iamètre du trou cylind riq ue associé du premier élément et qui est prévu po ur ten ir compte des déformations du second élément lorsque l'assemblage est sollicité,- the cylindrical members for positioning the first element are each of a diameter which is less than the diameter of the associated cylindrical hole of the first element and which is intended to take account of the deformations of the second element when the assembly is requested,
- les organes cylindriques de mise en position d u premier élément sont déportés ch acun à une distance du point de la zone de contrainte nulle du second élément qu i est prévue pour ten ir compte des déformations du second élément lorsque l'assemblage est sollicité,the cylindrical members for positioning the first element are offset each at a distance from the point of the zone of zero stress of the second element which is provided to take account of the deformations of the second element when the assembly is stressed,
- au moins un organe de fixation est constitué d'un organe cylindrique de mise en position et au moins un perçage est constitué d'un trou cylindrique associé,at least one fixing member consists of a cylindrical positioning member and at least one bore consists of an associated cylindrical hole,
- l'assemblage comporte un organe de centrage, q ui s'étend perpendiculairement à partir de la première face de contact,.. et un trou de centrage coaxial du second élément q ui débouche dans la seconde face de contact, dont les axes coïncident avec le point de la zone de contrainte n ulle d u second élément,- The assembly comprises a centering member, q which extends perpendicularly from the first contact face, .. and a coaxial centering hole of the second element which opens into the second contact face, the axes of which coincide with the point of the stress zone n ulle of the second element,
- au moins un organe de fixation est constitué de l'organe de centrage et au moins u n perçage est constitué du trou de centrage associé, '- at least one fixing member consists of the centering member and at least one bore consists of the associated centering hole, '
- au moins un organe de fixation compo rte u n moyen d'immob ilisation axiale, notamment un goujon ou une vis ,at least one fixing member comprising an axial immobilization means, in particular a stud or a screw,
- au moins un organe de fixation compo rte u n moyen d'immobilisation radiale, notamment une pige.- At least one fixing member comprises a means of radial immobilization, in particular a rod.
D'autres caractéristiques et avantages de l'invention apparaîtront à la lecture de la description détaillée q ui su it pour la compréhension de laquelle on se reportera aux dessins annexés dans lesquels :Other characteristics and advantages of the invention will appear on reading the detailed description which follows for the understanding of which reference will be made to the appended drawings in which:
- la figure 1 est une vue de face suivant une direction perpendiculaire au plan des faces de contact d'un premier assemblage selon un état antérieur de la technique,FIG. 1 is a front view in a direction perpendicular to the plane of the contact faces of a first assembly according to a prior state of the art,
- la figure 2 est une vue de face suivant une direction perpendiculaire au plan des faces de contact d'un deuxième assemblage selon un état antérieur de la technique,FIG. 2 is a front view in a direction perpendicular to the plane of the contact faces of a second assembly according to a prior state of the art,
- la figure 3 est une vue de face suivant une direction perpendiculaire au plan des faces de contact d'un assemblage au selon un premier mode de réalisation de l'invention, représenté en position de repos,FIG. 3 is a front view in a direction perpendicular to the plane of the contact faces of an assembly according to a first embodiment of the invention, shown in the rest position,
- la figure 4 est une vue de l'assemblage de la figure 3, représenté en position de'sollicitation, et - la figure 5 est une vue de face suivant une direction perpendiculaire au plan des faces de contact d'un assemblage selon un second mode de réalisation de l'invention, représenté en position de repos.- Figure 4 is a view of the assembly of Figure 3, shown in position biasing, and - Figure 5 is a front view in a direction perpendicular to the plane of the contact faces of an assembly according to a second embodiment of the invention, shown in the rest position.
Dans la description qui va suivre, des chiffres de référence identiques désignent des éléments identiques.In the following description, identical reference numerals denote identical elements.
On a représenté sur les figures différents assemblages mécaniques 10. De manière connue, chaque assemblage 10 comporte un premier élément 12 et second élément 14 qui sont assemblés l'un à l'autre par l'intermédiaire de première et seconde faces planes 16, 18 de contact respectives.Various mechanical assemblies 10 are shown in the figures. In a known manner, each assembly 10 comprises a first element 12 and second element 14 which are assembled to one another by means of first and second planar faces 16, 18 respective contacts.
De manière connue, chaque assemblage 10 comporte des moyens de mise en position des éléments 12, 14 l'un par rapport à l'autre dans le plan des faces de contact 16, 18 et il comporte des moyens de fixation d'un élément à l'autre suivant une direction "D" de fixation perpendiculaire au plan des faces de contact 16, 18.In known manner, each assembly 10 comprises means for positioning the elements 12, 14 relative to each other in the plane of the contact faces 16, 18 and it comprises means for fixing an element to the other in a direction "D" of fixing perpendicular to the plane of the contact faces 16, 18.
En particulier, les moyens de mise en position comportent au moins un organe cylindrique 20 de mise en position, qui s'étend perpendiculairement à partir de la première face 16 de contact, et un trou 22 du second élément 14 qui débouche dans la seconde face 18 de contact et qui est destiné à recevoir l'organe 20 cylindrique.In particular, the positioning means comprise at least one cylindrical positioning member 20 which extends perpendicularly from the first face 16 of contact, and a hole 22 of the second element 14 which opens into the second contact face 18 and which is intended to receive the cylindrical member 20.
Par ailleurs, les moyens de fixation comportent au- moins un organe 24 de fixation, qui s'étend perpendiculairement à partir de la première face 16 de contact, et un perçage 26 du second élément 14 qui débouche dans la seconde face 18 de contact et qui est destiné à recevoir l'organe 24 de fixation.Furthermore, the fixing means comprise at least one fixing member 24, which extends perpendicularly from the first contact face 16, and a bore 26 of the second element 14 which opens into the second contact face 18 and which is intended to receive the fixing member 24.
Cette configuration a été représentée aux figures 1 et 2 qui illustrent des assemblages 10 connus de l'état de la technique.This configuration has been shown in Figures 1 and 2 which illustrate assemblies 10 known from the prior art.
La figure 1 illustre plus particulièrement un assemblage 10, pour lequel le plan commun des faces de contact 16, 18 est destiné à être orienté sensiblement suivant la direction verticale "V". Les moyens de mise en position de cet assemblage 10 comportent deux organes cylindriques 20 de mise en position, qui s'étendent perpendiculairement à partir de la première face 16 de contact, et des trous 22 cylindriques du second élément 14 qui débouchent dans la seconde face 18 de contact et qui sont destinés chacun à recevoir un organe 20 cylindrique associé. Les trous 22 sont chacun d'un diamètre supérieur à l'organe cylindrique 20 associé, de sorte que lorsque l'assemblage 10 est mis en position suivant la direction verticale "V", chaque organe 20 cylindrique de mise en position est en contact avec le trou 22 associé par l'intermédiaire d'une génératrice "G" commune dont on voit la trace sur la figure 1.Figure 1 illustrates more particularly an assembly 10, for which the common plane of the contact faces 16, 18 is intended to be oriented substantially in the vertical direction "V". The positioning means of this assembly 10 comprise two cylindrical positioning members 20, which extend perpendicularly from the first contact face 16, and cylindrical holes 22 of the second element 14 which open into the second face 18 contact and which are each intended to receive an associated cylindrical member 20. The holes 22 are each of a diameter greater than the associated cylindrical member 20, so that when the assembly 10 is placed in position in the vertical direction "V", each cylindrical member 20 for positioning is in contact with the associated hole 22 via a common generator "G", the trace of which is seen in FIG. 1.
Dans cet exemple, les moyens de fixation sont confondus avec les moyens de mise en position. Des organes 24 de fixation du premier élément 12 sont confondus avec les organes 20 de mise en position, et des perçages 26 du second élément 14 sont confondus avec les trous 22 cylindriques de mise en position. Les organes 24 de fixation sont par exemple constitués de goujons qui permettent la fixation du second élément 14 en forme de plaque sur le premier élément 12 par serrage d'un écrou (non représenté) qui est agencé au contact du dos du second élément 14.In this example, the fixing means are merged with the positioning means. Bodies 24 for fixing the first element 12 are merged with the members 20 for positioning, and holes 26 for the second element 14 are merged with the cylindrical holes 22 for positioning. The fixing members 24 are for example made up of studs which allow the fixing of the second element 14 in the form of a plate. on the first element 12 by tightening a nut (not shown) which is arranged in contact with the back of the second element 14.
Cette configuration présente d'une part l'inconvénient d'imposer que l'assemblage 10 soit disposé verticalement, et d'autre part l'inconvénient de permettre un mouvement relatif des éléments 12 et 14 l'un par rapport à l'autre lorsque l'assemblageThis configuration has on the one hand the disadvantage of requiring that the assembly 10 be arranged vertically, and on the other hand the disadvantage of allowing relative movement of the elements 12 and 14 relative to each other when assembly
10 est sollicité.10 is requested.
La figure 2 illustre un assemblage 10, pour lequel les moyens de mise en position comportent deux organes cylindriques 20 de mise en position qui s'étendent perpendiculairement à partir de la première face 16 de contact. Le second élément 18 comporte un trou 22 cylindrique et un trou oblong 23 qui débouchent dans la seconde face 18 de contact et qui sont destinés chacun à recevoir un organe 20 cylindrique associé. Le trou cylindrique 22 est d'un diamètre supérieur à l'organe cylindrique 20 associé et le trou oblong 23 est d'une largeur sensiblement égale au diamètre de l'organe 20 de fixation associé, de sorte que lorsque les éléments 12 et 14 sont assemblés, l'assemblage 10 est mis en position de manière précise par les faces opposées 25 du trou oblong 23.FIG. 2 illustrates an assembly 10, for which the positioning means comprise two cylindrical positioning members 20 which extend perpendicularly from the first contact face 16. The second element 18 has a cylindrical hole 22 and an oblong hole 23 which open into the second contact face 18 and which are each intended to receive an associated cylindrical member 20. The cylindrical hole 22 is of a diameter greater than the associated cylindrical member 20 and the oblong hole 23 is of a width substantially equal to the diameter of the associated fixing member 20, so that when the elements 12 and 14 are assembled, the assembly 10 is positioned precisely by the opposite faces 25 of the oblong hole 23.
Dans cet exemple, les moyens de fixation sont confondus avec les moyens de mise en position. Des organes 24 de fixation du premier élément 12 sont confondus au moins un des organes 20 de mise en position, et des perçages 26 du second élément 14 sont confondus avec au moins un des trous 22 cylindrique et 23 oblong de mise en position. Les organes 24 de fixation sont par exemple constitués de goujons qui permettent la fixation du second élément 14 en forme de plaque sur le premier élément 12 par serrage d'un écrou (non représenté) qui est agencé au contact du dos du second élément 14.In this example, the fixing means are merged with the positioning means. Fastening members 24 for the first element 12 are combined at least one of the positioning members 20, and holes 26 for the second element 14 are coincident with at least one of the cylindrical holes 23 and 23 for positioning. The fixing members 24 are for example made up of studs which allow the fixing of the second plate-shaped element 14 on the first element 12 by tightening a nut (not shown) which is arranged in contact with the back of the second element 14.
Cette configuration présente d'une part l'inconvénient d'être coûteuse à réaliser, puisque l'usinage du trou oblong 23 est d'un coût plus élevé que celui d'un trou cylindrique, et d'autre part il présente l'inconvénient de nécessiter de faire coïncider la direction principale de déformation selon laquelle l'assemblage est susceptible de se déformer avec la direction générale du trou oblong 23.This configuration has on the one hand the disadvantage of being costly to carry out, since the machining of the oblong hole 23 is of a higher cost than that of a cylindrical hole, and on the other hand it has the disadvantage to need to match the main direction of deformation according to which the assembly is liable to deform with the general direction of the oblong hole 23.
L'invention se propose de remédier aux inconvénients des assemblages précités en proposant un assemblage 10 qui peut être décliné selon deux modes de réalisation représentés aux figures 3 à 5.The invention proposes to remedy the drawbacks of the above-mentioned assemblies by proposing an assembly 10 which can be declined according to two embodiments shown in FIGS. 3 to 5.
Plus particulièrement, quel que soit le mode de réalisation envisagé, l'invention propose un assemblage 10 du type général décrit précédemment, qui est caractérisé en ce que les moyens de mise en position comportent au moins quatre trous cylindriques 22a, 22b, 22c, 22d du second élément 14, qui sont tangents intérieurement à autant d'organes cylindriques 20a, 20b, 20c, 20d de mise en position du premier élément 12, et dont les axes Xa, Xb, Xc, Xd, sont déportés par rapport aux axes Ya, Yb, Yc, Yd des organes cylindriques 20a, 20b, 20c, 20d de mise en position suivant des directions respectives Za, Zb, Zc, Zd de déport qui sont sécantes en un point "N" d'une zone du second élément 14 dans laquelle les contraintes sont nulles lorsque l'assemblage 10 est sollicité..More particularly, whatever the embodiment envisaged, the invention proposes an assembly 10 of the general type described above, which is characterized in that the positioning means comprise at least four cylindrical holes 22a, 22b, 22c, 22d of the second element 14, which are tangent internally to as many cylindrical members 20a, 20b, 20c, 20d for positioning the first element 12, and whose axes Xa, Xb, Xc, Xd, are offset relative to the axes Ya , Yb, Yc, Yd of the cylindrical members 20a, 20b, 20c, 20d of positioning in respective directions Za, Zb, Zc, Zd of offset which are intersecting at a point "N" of a zone of the second element 14 in which the stresses are zero when the assembly 10 is stressed.
Plus particulièrement, les organes cylindriques 20a, 20b, 20c, 20d de mise en position du premier élément 12 sont chacun d'un diamètre qui est inférieur au diamètre du trou cylindrique 22a, 22b, 22c, 22d associé du second élément 14 et qui est prévu pour tenir compte des déformations du second élément 14 lorsque l'assemblage 10 est sollicité, comme représenté à la figure 4.More particularly, the cylindrical members 20a, 20b, 20c, 20d for positioning the first element 12 are each of a diameter which is less than the diameter of the associated cylindrical hole 22a, 22b, 22c, 22d of the second element 14 and which is designed to take account of the deformations of the second element 14 when the assembly 10 is stressed, as shown in FIG. 4.
D'autre part, les organes cylindriques 20a, 20b, 20c, 20d de mise en position du premier élément 12 sont déportés chacun à une distance Ra, Rb, Rc, Rd respective du point 'N" de la zone de contrainte nulle du second élément 14 qui est prévue pour tenir compte des déformations du second élément 14 lorsque l'assemblage 10 est sollicitéOn the other hand, the cylindrical members 20a, 20b, 20c, 20d for positioning the first element 12 are each offset at a distance Ra, Rb, Rc, Rd respectively from the point 'N "of the zero stress zone of the second element 14 which is designed to take account of the deformations of the second element 14 when the assembly 10 is stressed
De surcroît, cette configuration permet avantageusement, dans une configuration de repos de l'assemblage 10 qui correspond notamment au montage du second élément 14 sur le premier élément 12, que tous les organes cylindriques 20a, 20b, 20c, 20d de mise en position du premier élément 12 soient effectivement tangents aux trous cylindriques 22a, 22b, 22c, 22d.In addition, this configuration advantageously allows, in a rest configuration of the assembly 10 which corresponds in particular to the mounting of the second element 14 on the first element 12, that all the cylindrical members 20a, 20b, 20c, 20d for positioning the first element 12 are effectively tangent to the cylindrical holes 22a, 22b, 22c, 22d.
Dans les deux modes de réalisation de l'invention qui ont été représentés aux figures 3 à 5, au moins un organe de fixation est constitué d'un organe cylindrique 20a, 20b, 20c, 20d de mise en position et au moins un perçage associé à l'organe de fixation est constitué d'un trou cylindrique associé 22a, 22b, 22c, 22d.In the two embodiments of the invention which have been represented in FIGS. 3 to 5, at least one fixing member consists of a cylindrical member 20a, 20b, 20c, 20d for positioning and at least one associated drilling to the fixing member consists of an associated cylindrical hole 22a, 22b, 22c, 22d.
De préférence, mais de manière limitative de l'invention, chaque organe cylindrique 20a, 20b, 20c, 20d de mise en position constitue un organe de fixation. A cet effet, chaque organe cylindrique 20a, 20b, 20c, 20d de mise en position comporte un moyen d'immobilisation axiale du second élément 14 , par exemple un goujon ou une vis qui est destinée à permettre le serrage du second élément 14 contre le premier élément 12, ou un moyen d'immobilisation radiale, tel qu'une pige qui est destinée à coopérer avec les parois du trou cylindrique associé 22a, 22b, 22c, 22d pour immobiliser le second élément 14 par rapport au premier élément 12.Preferably, but limitatively of the invention, each cylindrical member 20a, 20b, 20c, 20d for positioning constitutes a fixing member. To this end, each cylindrical member 20a, 20b, 20c, 20d for positioning includes a means of axial immobilization of the second element 14, for example a stud or a screw which is intended to allow the tightening of the second element 14 against the first element 12, or a radial immobilization means, such as a rod which is intended to cooperate with the walls of the associated cylindrical hole 22a, 22b, 22c, 22d to immobilize the second element 14 relative to the first element 12.
Selon le premier mode de réalisation de l'Invention qui est représenté aux figures 3 et 4, l'assemblage 10 comporte un organe 28 de centrage, qui s'étend perpendiculairement à partir de la première face 16 de contact, et un trou 30 de centrage coaxial du second élément 14 qui débouche dans la seconde face de contact 18. Les axes (non représentés) de l'organe 28 de centrage et du trou 30 de centrage passent sensiblement par le point "N" de la zone de contrainte nulle du second élément 14.According to the first embodiment of the invention which is shown in Figures 3 and 4, the assembly 10 comprises a centering member 28, which extends perpendicularly from the first contact face 16, and a hole 30 of coaxial centering of the second element 14 which opens into the second contact face 18. The axes (not shown) of the centering member 28 and of the centering hole 30 pass substantially through the point "N" of the zone of zero stress of the second element 14.
L'organe 28 de centrage est reçu avec jeu dans le trou 30 de centrage pour permettre le montage du second élément 14 sur le premier élément 12. Toutefois ce jeu n'est pas nécessairement élevé, puisque lorsque l'assemblage 10 est sollicité mécaniquement comme représenté à la figure 4, la zone de contrainte nulle dans laquelle sont agencés l'organe 28 de centrage et le trou 30 de centrage n'est pas sollicitée.The centering member 28 is received with clearance in the centering hole 30 to allow the mounting of the second element 14 on the first element 12. However, this clearance is not necessarily high, since when the assembly 10 is stressed mechanically as shown in Figure 4, the area of zero stress in which the centering member 28 is arranged and the centering hole 30 is not stressed.
Dans cette configuration, l'assemblage 10 peut être constitué au repos en montant le second élément 14 sur le premier élément 12, comme représenté à la figure 3. Le second élément 14 est d'abord mis en position sur l'organe 28 de centrage qui peut par exemple être plus long que les organes cylindriques 20a, 20b, 20c, 20d de mise en position.In this configuration, the assembly 10 can be formed at rest by mounting the second element 14 on the first element 12, as shown in FIG. 3. The second element 14 is first placed in position on the centering member 28 which may for example be longer than the cylindrical members 20a, 20b, 20c, 20d for positioning.
Puis le second élément 14 est pivoté dans un plan parallèle au plan des faces de contact 16, 18 de manière que les trous cylindriques 22a, 22b, 22c, 22d du second élément 14 viennent en regard des organes cylindriques 20a, 20b, 20c, 20d du premier élément 12.Then the second element 14 is pivoted in a plane parallel to the plane of the contact faces 16, 18 so that the cylindrical holes 22a, 22b, 22c, 22d of the second element 14 come opposite the cylindrical members 20a, 20b, 20c, 20d of the first element 12.
Puis le second élément 18 est descendu de manière que les faces de contact 16, 18 soient plaquées l'une contre l'autre et que les organes cylindriques 20a, 20b, 20c, 20d de mise en position soient tangents avec les trous cylindriques 22a, 22b, 22c, 22d.Then the second element 18 is lowered so that the contact faces 16, 18 are pressed against each other and that the cylindrical members 20a, 20b, 20c, 20d for positioning are tangent with the cylindrical holes 22a, 22b, 22c, 22d.
Enfin, le second élément 14 est serré sur le premier élément 12. A cet effet, l'organe 28 de centrage constitue de préférence un organe de fixation radiale ou axiale au même titre que les organes cylindriques 20a, 20b, 20c, 20d de mise en position.Finally, the second element 14 is clamped on the first element 12. To this end, the centering member 28 preferably constitutes a radial or axial fixing member in the same way as the cylindrical members 20a, 20b, 20d in position.
De la sorte, lorsque l'assemblage 10 est sollicité mécaniquement comme illustré à la figure 4, le second élément 14 ne sollicite pas les organes cylindriques 20a, 20b, 20c, 20d, car la position des axes Ya, Yb, Yc, Yd de ces derniers évolue le long des directions Za, Zb, Zc, Zd de déport tout en demeurant à l'intérieur des trous cylindriques 22a, 22b, 22c, 22d. Selon le second mode de réalisation de l'invention qui est représenté à la figure 5, l'assemblage 10 ne comporte aucun organe de centrage. Dans cette configuration, l'assemblage 10 peut être constitué au repos en montant le second élément 14 sur le premier élément 12 de manière que les trous cylindriques 22a, 22b, 22c, 22d du second élément 14 viennent en regard des organes cylind riques 20a, 20b, 20c, 20d du premier élément 12.In this way, when the assembly 10 is stressed mechanically as illustrated in FIG. 4, the second element 14 does not stress the cylindrical members 20a, 20b, 20c, 20d, because the position of the axes Ya, Yb, Yc, Yd of the latter moves along the offset directions Za, Zb, Zc, Zd while remaining inside the cylindrical holes 22a, 22b, 22c, 22d. According to the second embodiment of the invention which is shown in Figure 5, the assembly 10 has no centering member. In this configuration, the assembly 10 can be formed at rest by mounting the second element 14 on the first element 12 so that the cylindrical holes 22a, 22b, 22c, 22d of the second element 14 come opposite the cylindrical members 20a, 20b, 20c, 20d of the first element 12.
. Puis, le second élément 18 est descendu de manière que les faces de contact 1-6, 18 soient plaquées l'une contre l'autre et que les organes cylindriques 20a, 20b, 20c, 20d de mise en position soient tangents avec les trous cylindriques 22a, 22b, 22c, 22d . Enfin , le second élément 14 est serré sur le premier élément 12.. Then, the second element 18 is lowered so that the contact faces 1-6, 18 are pressed against each other and that the cylindrical members 20a, 20b, 20c, 20d for positioning are tangent with the holes cylindrical 22a, 22b, 22c, 22d. Finally, the second element 14 is clamped on the first element 12.
De la sorte, lorsque l'assemblage 10 est sollicité mécaniquement d'une manière analogue au mode de réalisation précédent, le second élément 14 ne sollicite pas les organes cylindriques 20a, 20b, 20c, 20d, car la position (non représentée) des axes Ya, Yb, Yc, Yd de ces derniers évolue le long des d irections Za, Zb, Zc, Zd de déport tout en demeurant à l'intérieur des trous cylindriques 22a, 22b, 22c, 22d.In this way, when the assembly 10 is mechanically stressed in a manner analogous to the previous embodiment, the second element 14 does not stress the cylindrical members 20a, 20b, 20c, 20d, because the position (not shown) of the axes Ya, Yb, Yc, Yd of the latter evolves along the directions Za, Zb, Zc, Zd of offset while remaining inside the cylindrical holes 22a, 22b, 22c, 22d.
L'invention permet donc de constituer un assemblage 10 dont les points de fixation ne sont pas sollicités lorsque l'assemblage 10 est sollicité mécaniquement. A ce titre, il trouve à s'appliquer à un grand nombre de situations, notamment dans le cadre d'assemblages 10 mis en œuvre dans la construction automobile. The invention therefore makes it possible to constitute an assembly 10 whose attachment points are not stressed when the assembly 10 is mechanically stressed. As such, it is applicable to a large number of situations, in particular in the context of assemblies 10 implemented in automobile construction.

Claims

REVENDICATIONS
1. Assemblage mécanique (10) comportant un ' premier élément (12) et un second élément (14) "assemblés l'un à l'autre par l'intermédiaire de première (16) et seconde (18) faces planes de contact respectives, du type qui comporte des moyens de mise en position des éléments l'un par rapport à l'autre dans le plan des faces de contact (16, 18) et des moyens de fixation d'un élément à l'autre suivant une direction de fixation perpendiculaire au pian des faces de contact, du type dans lequel les moyens de mise en position comportent au moins un organe cylindrique (20a, 20b, 20c, 20d) de mise en position , qui s'étend perpendiculairement à partir de la première face (16) de contact, et un trou (22a, 22b, 22c, 22d) du second élément (14) qui débouche dans la seconde face (18) de contact et qui est destiné à recevoir l'organe (20a , 20b, 20c, 20d) cylindrique, et du type dans lequel les moyens de fixation comportent au moins un organe de fixation, qui s'étend perpendiculairement à partir de la première face (16) de contact, et un perçage du second élément (14) qui débouche dans la seconde face (18) de contact et qui est destiné à recevoir l'organe de fixation, caractérisé en ce que les moyens de mise en position comportent au moins quatre trous (22a, 22b, 22c, 22d) cylindriques du second élément (14), qui sont tangents intérieurement à autant d'organes cylindriques (20a, 20b , 20c, 20d) de mise en position du premier élément (12), et dont les axes (Xa, Xb, Xc, Xd) sont déportés par rapport aux axes (Ya, Yb, Yc, Yd) des organes cylindriques (20a, 20b, 20c, 20d) de mise en position suivant des directions (Za, Zb, Zc, Zd) respectives de déport qui sont sécantes en un point (N) d'une zone du second élément (14) dans laquelle les contraintes sont nulles lorsque l'assemblage (1 0) est sollicité.1. Mechanical assembly (10) comprising a ' first element (12) and a second element (14) " assembled to each other by means of first (16) and second (18) respective flat contact faces , of the type which comprises means for positioning the elements relative to each other in the plane of the contact faces (16, 18) and means for fixing one element to the other in a direction for fixing perpendicular to the plane of the contact faces, of the type in which the positioning means comprise at least one cylindrical positioning member (20a, 20b, 20c, 20d) which extends perpendicularly from the first contact face (16), and a hole (22a, 22b, 22c, 22d) of the second element (14) which opens into the second contact face (18) and which is intended to receive the member (20a, 20b, 20c, 20d) cylindrical, and of the type in which the fixing means comprise at least one fixing member, which extends perpendicular clearly from the first contact face (16), and a bore of the second element (14) which opens into the second contact face (18) and which is intended to receive the fixing member, characterized in that the positioning means comprise at least four cylindrical holes (22a, 22b, 22c, 22d) of the second element (14), which are tangent internally to as many cylindrical members (20a, 20b, 20c, 20d) of the first element (12), and whose axes (Xa, Xb, Xc, Xd) are offset relative to the axes (Ya, Yb, Yc, Yd) of the cylindrical members (20a, 20b, 20c, 20d) position along respective directions (Za, Zb, Zc, Zd) of offset which are intersecting at a point (N) of an area of the second element (14) in which the stresses are zero when the assembly (1 0) is sought.
2. Assemblage (10) selon la revendication précédente, caractérisé en ce que les organes cylindriques (20a, 20b, 20c, 20d) de mise en position du premier élément (12) sont chacun d'un diamètre qui est inférieur au diamètre du trou cylindrique (22a, 22b, 22c, 22d) associé du second élément (14) et qui est prévu pour tenir compte des déformations du second élément (14) lorsque l'assemblage (10) est sollicité. 2. Assembly (10) according to the preceding claim, characterized in that the cylindrical members (20a, 20b, 20c, 20d) for positioning the first element (12) are each of a diameter which is less than the diameter of the associated cylindrical hole (22a, 22b, 22c, 22d) of the second element (14) and which is designed to take account of the deformations of the second element (14) when the assembly (10) is requested.
3. Assemblage (10) selon l'une des revendications précédentes, caractérisé en ce que les organes cylindriques (20a, 20b, 20c, 20d) de mise en position du premier élément (12) sont déportés chacun à une distance (Ra, Rb, Rc, Rd) d u point (N) de la zone de contrainte nulle du second élément (14) qui est prévue pour tenir compte des déformations d u second élément (14) lorsque l'assemblage (10) est sollicité.3. Assembly (10) according to one of the preceding claims, characterized in that the cylindrical members (20a, 20b, 20c, 20d) for positioning the first element (12) are each offset at a distance (Ra, Rb , Rc, Rd) of the point (N) of the zone of zero stress of the second element (14) which is designed to take account of the deformations of the second element (14) when the assembly (10) is stressed.
4. Assemblage (10) selon l'une quelconque des revendications précédentes , caractérisé en ce que au moins un organe de fixation est constitué d'un organe cylindrique (20a, 20b, 20c, 20d) de mise en position et en ce q ue au moins un perçage est constitué d'un trou cylind rique (22a, 22b, 22c, 22d) associé.4. Assembly (10) according to any one of the preceding claims, characterized in that at least one fixing member consists of a cylindrical member (20a, 20b, 20c, 20d) for positioning and in that q ue at least one bore consists of a cylindrical hole (22a, 22b, 22c, 22d) associated.
5. Assemblage ( 10) selon l'une quelconque des revendications précédentes , caractérisé en ce qu'il comporte un organe (28) de centrage, q ui s'étend perpendiculairement à partir de la première face (16) de contact, et un trou' (30) de centrage coaxial du second élément (14) qui débouche dans la seconde face (18) de contact, dont les axes coïncident avec le point (N) de la zone de contrainte nulle du second élément (14).5. Assembly (10) according to any one of the preceding claims, characterized in that it comprises a centering member (28), which extends perpendicularly from the first contact face (16), and a hole ' (30) for coaxial centering of the second element (14) which opens into the second contact face (18), whose axes coincide with the point (N) of the zone of zero stress of the second element (14).
6. Assemblage (1 0) selon la revendication précédente, caractérisé en ce que au moins un organe cylindrique de fixation est. constitué de l'organe (28) de centrage et en ce que au moins un perçage est constitué du trou (30) de centrage associé.6. Assembly (1 0) according to the preceding claim, characterized in that at least one cylindrical fixing member is. consisting of the centering member (28) and in that at least one bore consists of the associated centering hole (30).
7. Assemblage (1 0) selon l'une quelconque des revend ications précédentes, caractérisé en ce que au moins un organe de fixation comporte un moyen d'immobilisation axiale, notamment un goujon ou une vis. 7. Assembly (1 0) according to any one of the preceding sells ications, characterized in that at least one fixing member comprises an axial immobilization means, in particular a stud or a screw.
8. Assemblage (10) selon l'une quelconque des revendications précédentes, caractérisé en ce que au moins un organe de fixation comporte un moyen d'immobilisation radiale, notamment une pige. 8. Assembly (10) according to any one of the preceding claims, characterized in that at least one fixing member comprises a radial immobilization means, in particular a rod.
EP02791494A 2001-07-31 2002-07-05 Stress-free mechanical assembly Withdrawn EP1412643A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0110229 2001-07-31
FR0110229A FR2828246B1 (en) 2001-07-31 2001-07-31 CONSTRAINED MECHANICAL ASSEMBLY
PCT/FR2002/002357 WO2003012301A1 (en) 2001-07-31 2002-07-05 Stress-free mechanical assembly

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EP1412643A1 true EP1412643A1 (en) 2004-04-28

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EP02791494A Withdrawn EP1412643A1 (en) 2001-07-31 2002-07-05 Stress-free mechanical assembly

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FR (1) FR2828246B1 (en)
WO (1) WO2003012301A1 (en)

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Publication number Priority date Publication date Assignee Title
DE102010007873A1 (en) * 2010-02-13 2011-08-18 Hewitech GmbH & Co. KG, 48607 Installation for a cooling tower and cooling tower with several such installations
EP2653376B1 (en) * 2012-04-18 2016-03-23 Airbus Operations, S.L. Bolted joint of the cover of an access opening in an aircraft lifting surface
DE102022122109A1 (en) 2022-09-01 2024-03-07 Bayerische Motoren Werke Aktiengesellschaft Housing for aligning a first component feature to a second component feature for a motor vehicle, component arrangement, motor vehicle

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Publication number Priority date Publication date Assignee Title
NL97117C (en) * 1953-12-18
US4687165A (en) * 1986-05-02 1987-08-18 The United States Of America As Represented By The United States Department Of Energy Adapter plate assembly for adjustable mounting of objects
FR2609891A1 (en) * 1987-01-22 1988-07-29 Lacoste Sa Ets WHEEL HOLDER FOR WHEELCHAIR OR SIMILAR
US5174675A (en) * 1990-05-07 1992-12-29 Inventio Ag Guide bar for an elevator door

Non-Patent Citations (1)

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Title
See references of WO03012301A1 *

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FR2828246A1 (en) 2003-02-07
WO2003012301A1 (en) 2003-02-13
FR2828246B1 (en) 2003-11-14

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