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EP1768859A1 - Vehicle wheel rim for mounting a tyre and a support element - Google Patents

Vehicle wheel rim for mounting a tyre and a support element

Info

Publication number
EP1768859A1
EP1768859A1 EP05756839A EP05756839A EP1768859A1 EP 1768859 A1 EP1768859 A1 EP 1768859A1 EP 05756839 A EP05756839 A EP 05756839A EP 05756839 A EP05756839 A EP 05756839A EP 1768859 A1 EP1768859 A1 EP 1768859A1
Authority
EP
European Patent Office
Prior art keywords
seat
rim
coaxial
boss
revolution
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Withdrawn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
EP05756839A
Other languages
German (de)
French (fr)
Inventor
Marc Calvet
Guy Cagneaux
Nicolas Janin
Michel Malevergne
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.)
Michelin Recherche et Technique SA France
Societe de Technologie Michelin SAS
Original Assignee
Michelin Recherche et Technique SA Switzerland
Societe de Technologie Michelin 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
Priority claimed from FR0407580A external-priority patent/FR2872739B1/en
Priority claimed from FR0501579A external-priority patent/FR2881989B3/en
Application filed by Michelin Recherche et Technique SA Switzerland, Societe de Technologie Michelin SAS filed Critical Michelin Recherche et Technique SA Switzerland
Publication of EP1768859A1 publication Critical patent/EP1768859A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B21/00—Rims
    • B60B21/12—Appurtenances, e.g. lining bands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B21/00—Rims
    • B60B21/02—Rims characterised by transverse section
    • B60B21/023—Rims characterised by transverse section the transverse section being non-symmetrical
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B21/00—Rims
    • B60B21/02—Rims characterised by transverse section
    • B60B21/026—Rims characterised by transverse section the shape of rim well
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B21/00—Rims
    • B60B21/02—Rims characterised by transverse section
    • B60B21/028—Rims characterised by transverse section the shape of hump
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B21/00—Rims
    • B60B21/02—Rims characterised by transverse section
    • B60B21/04—Rims characterised by transverse section with substantially radial flanges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B21/00—Rims
    • B60B21/10—Rims characterised by the form of tyre-seat or flange, e.g. corrugated
    • B60B21/102—Rims characterised by the form of tyre-seat or flange, e.g. corrugated the shape of bead seats
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B21/00—Rims
    • B60B21/10—Rims characterised by the form of tyre-seat or flange, e.g. corrugated
    • B60B21/104—Rims characterised by the form of tyre-seat or flange, e.g. corrugated the shape of flanges

Definitions

  • Vehicle jantc for mounting a tire and a support support
  • the present invention relates to a vehicle rim for mounting a tire, so-called inverted seats.
  • an assembly comprising a wheel, a tire mounted on the wheel and, optionally, a tread support support is designated “assembled assembly”.
  • the wheel comprises a rim, for example such as that described in WO 01/08905, and a disc.
  • the beads of the tire are supported on seats of the rim.
  • the average diameters of the two seats are different to facilitate the assembly and disassembly of the support support on the rim.
  • the seat closest to the inside of the vehicle has the largest average diameter.
  • the support support is worn circumferentially by a bearing surface of the rim, located between the two seats. It is constituted for example by an elastically deformable elastomeric material, which prevents the tread from sagging when the mounted assembly rolls in degraded mode, that is to say when the pressure prevailing in the tire is insufficient. or none.
  • the rim described in WO 01/08905 is provided with a boss safety axially extending the seat towards the inside of the rim. It is said that the safety boss has an anti-decoupling function.
  • the inventors of the present invention have had the idea to perform tests even more restrictive for all mounted worn word forward train, subjecting it to a test run in degraded mode during a braking d urgency supported, the front wheels steered.
  • the invention relates to a vehicle rim, of revolution, for mounting a tire, having a first seat to be arranged on the side vehicle interior and a second seat, the first seat being extended axially towards the second seat, by a safety boss and comprising:
  • This rim is characterized in that, on the side of the boss, the inner edge of the first seat tangent a cone of revolution coaxial with the rim and open to the second seat, with an apex angle greater than 103 °.
  • the edge of the first seat, oriented on the side of the boss, is sufficiently inclined to provide a barrier which prevents the release of the bead bearing on the first seat.
  • the inventors have indeed found that the rim is particularly robust anti-decoupling when the first seat has this characteristic.
  • the first seat has a mean diameter smaller than the average diameter of the second seat.
  • it is the seat disposed on the outside of the vehicle and closest to the disc of the wheel which has the largest diameter.
  • the first seat has an average diameter greater than the average diameter of the second seat.
  • it is the seat of smaller average diameter which is disposed on the outside of the vehicle and closest to the disk of the wheel.
  • the lower middle diameter seat is extended axially towards the upper middle diameter seat by a bearing surface. tread support. It is this embodiment which is illustrated in the accompanying figures. However, the particular geometry according to the invention of the seat disposed on the inside of the vehicle also applies in the case of a mounted assembly without support and whatever the diameters and respective positions of the seats of the rim.
  • the inner edge of the first seat coincides locally with a torus coaxial with the rim, the torus being radially external to the first seat.
  • the radius of curvature of the generating circular arc of the inner edge of the first seat is between 5 mm and 6 mm.
  • the first seat comprises an outer edge extending the bottom of the first seat opposite the inner edge.
  • the outer edge of the first seat coincides locally with a torus coaxial with the rim, the torus being radially external to the first seat.
  • the rim is such that:
  • the outer edge of the first seat is shaped so that the cone coincides with the bottom of the first seat intersects the torus coincides with the outer edge of the first seat in two circles of intersection,
  • - L t is the length of the convex hull of the intersection of the first seat with the plane perpendicular to the rim axis, axially offset towards the second seat by 6 mm from the nearest intersection circle the outer edge of the first seat,
  • the first seat and the boss define first and second profiles symmetrical with respect to the axis of the rim
  • a point of connection between the bottom and the inner edge on the first profile, and a current point on the second profile make it possible to define a second plane normal to the foreground and containing the connection point and the current point,
  • L p is the maximum length of the convex hull of the intersection of the rim with the second plane, when the current point describes the second profile, and such that:
  • An axial plane is defined as a plane containing the axis of revolution of the rim.
  • the inventors have manufactured several prototypes of rims. Each rim was subjected to anti-decoupling tests and tire assembly and disassembly tests.
  • L t ⁇ 1500 mm Preferably for a wheel diameter of less than 460 mm, for: L t ⁇ 1500 mm we have: - ⁇ - ⁇ 102.1%.
  • the safety boss comprises a frustoconical portion locally confused with a cone of revolution open to the first seat and coaxial with the rim.
  • the safety boss comprises a cylindrical portion locally confused with a cylinder of revolution coaxial with the rim, and extending the frustoconical portion of the boss to the first seat.
  • FIG. 1 is a view in axial section of a mounted assembly comprising a rim according to the invention
  • FIG. 2 is a detailed view in axial section of the rim shown in FIG. 1,
  • FIG. 3 is a detailed view of the seat of larger diameter of the rim shown in FIG. 2;
  • FIG. 4 is a view of a variant of the seat shown in FIG. 3, and
  • FIG. 5 is a view of the seat of larger diameter of the rim shown in Figure 2.
  • FIG. 1 shows, in an axial plane P 1 , a mounted assembly designated by the general reference 10.
  • the assembled assembly is substantially of revolution and comprises a wheel 12, a tire 14 and a support 16 of tread support.
  • the tire 12 conventionally comprises a tread 18 joined, by means of two sidewalls 20, to two beads 22. It is reinforced by a radial carcass reinforcement formed of a sheet (not shown) of usually textile cables ( other types or types of reinforcement are also possible) anchored in each bead 22 around a rod 24.
  • the wheel 12 comprises a rim 26 shown in more detail in Figure 2.
  • the rim 26, sectional view in the plane P 1 has two symmetrical profiles relative to the axis of the mounted assembly. Only one of the two profiles is shown in Figure 2.
  • the rim 26 includes a bearing surface 28 for supporting the support support 16.
  • the rim 26 also comprises first 30 and second 32 seats on which the beads 22 are supported.
  • the first seat 30 has a mean diameter greater than the average diameter of the second seat 32. When the wheel 12 is mounted on a vehicle, the first seat 30 is oriented towards the vehicle.
  • the first seat 30, shown in more detail in Figure 3 comprises a bottom 34, an inner edge 36 extending the bottom 34 to the second seat 32, and an outer edge 38 extending the bottom 34 opposite the inner edge 36.
  • the inner edge 36 is extended towards the second seat 32 by a safety boss 40, and the outer edge 38 is extended opposite the bottom 34 by a projection 42.
  • the safety boss 40 is extended towards the second seat 32 by a mounting groove 43.
  • the outer edge 38 is locally confused with a torus 44 coaxial with the rim.
  • the generating circle of the torus 44 has a radius substantially equal to 12 mm.
  • the bottom 34 is locally confused with a cone of revolution 46 open to the second seat 32, coaxial with the rim 26 and at the apex angle ⁇ substantially equal to 30 ° We speak then frustoconical bottom 34.
  • the inner edge 36 coincides locally with a cone of revolution 48 open towards the second seat 32, coaxial with the rim 26 and with an apex angle ⁇ substantially equal to 115 °.
  • the inner edge 36 is locally confused with a torus 50 coaxial with the rim 26, the generating circle of the torus 50 having a radius substantially equal to 5.5 mm.
  • the inner edge is adjacent to the boss 40.
  • the inner edge is tangent to the cone 48 with an apex angle greater than 110 °, here about 115 °, at the point of inflection between the inner edge and the first edge. part of the boss 40, also circular but inverted curvature.
  • the inner edge 36 tangents the cone 48.
  • the safety boss 40 comprises a frustoconical portion 52 coincident locally with a cone of revolution 54 open to the first seat 30, coaxial with the rim 26 and the apex angle ⁇ substantially equal to 150 °.
  • the safety boss 40 further comprises a cylindrical portion 56 locally confused with a cylinder of revolution 58 coaxial with the rim 26 and extending the portion frustoconical 52 of the boss towards the inner edge 36 of the first seat 30.
  • the cone 46 intersects the core 44 in two circles of intersection C 1 and C 2 , the circle C 1 being closest to the outer edge of the first seat 30.
  • the length L t is then equal to the length of the convex envelope 60 of the intersection of the first seat 30 with the plane P 2 . If the first seat is perfectly revolution, this intersection is a circle and the length L t is equal to the perimeter of this circle.
  • the value of d is chosen arbitrarily so as to obtain a reference length L t , substantially equal to the perimeter of the first seat and the inside perimeter of the bead 22 of the tire 14.
  • Figure 5 a sectional view in the plane P 1 of the first seat 30, on which the two symmetrical profiles are shown.
  • the index a is used to describe the elements of the upper profile and the index b to describe the elements of the lower profile.
  • Xa is the connection point between the bottom 34a and the inner edge 36a.
  • Xb is a current point on the first seat 30b and the safety boss 40b.
  • the length L p is equal to the maximum length of the convex envelope 62 of the intersection of the rim 26 with the plane P 3 , when the point Xb describes the first seat 30b and the safety boss 40b.
  • the value L p substantially corresponds to the value that the inner perimeter of the bead 22 of the tire 14 must pass during a disassembly operation or during a detachment.
  • the ratio between the two lengths Z ⁇ and L t defined above must be such that, on the one hand, the anti-decoupling function is correctly provided by the safety boss 40 and on the other hand , the mounting and dismounting of the tire 14 on the wheel 12 remains possible using conventional garage tools.
  • the disassembly of the bead of the tire disposed on the first seat 30 is effected by a progressive thrust of a roller against this bead axially towards the mounting groove, the assembled assembly being rotated slowly. This push locally moves the bead and makes it progressively cross the inner edge of the seat and the safety boss. The bead then falls into the throat of
  • the assembly It is this operation for which the report - is determining.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Tires In General (AREA)

Abstract

The invention concerns a circular vehicle wheel rim (26) for mounting a tyre, comprising a first seat (30) designed to be arranged on the inside of the vehicle and a second seat (32), the first seat (30) being axially extended towards the second seat (32) by a safety boss (40) and including a truncated base (34) locally merging with a circular cone (46) open towards the second seat (32) and coaxial to the rim (26), and an inner edge (36) extending the base of the first seat (30) towards the second seat (32), such that, on the side of the boss, the inner edge (36) of the first seat (30) is tangent to a circular cone (48) coaxial to the rim and open towards the second seat (32) by an angle greater than 103°.

Description

Jantc de véhicule destinée au montage d'un pneumatique et d'un appui de soutien Vehicle jantc for mounting a tire and a support support

[0001] La présente invention concerne une jante de véhicule, destinée au montage d'un pneumatique, à sièges dits inversés.The present invention relates to a vehicle rim for mounting a tire, so-called inverted seats.

[0002] On connaît déjà dans l'état de la technique, notamment d'après le document WO 01/08905, une jante de véhicule, de révolution, destinée au montage d'un pneumatique et comportant des sièges inversés, c'est-à-dire inclinés vers l'extérieur de la jante et non vers l'intérieur comme dans les jantes usuelles.It is already known in the state of the art, in particular from WO 01/08905, a vehicle rim, of revolution, intended for mounting a tire and having inverted seats, that is, ie inclined outward from the rim and not inward as in the usual rims.

[0003] Dans la présente description, un ensemble comprenant une roue, un pneumatique monté sur la roue et, de façon optionnelle, un appui de soutien de bande de roulement est désigné « ensemble monté ».In the present description, an assembly comprising a wheel, a tire mounted on the wheel and, optionally, a tread support support is designated "assembled assembly".

[0004] La roue comprend une jante, par exemple telle que celle décrite dans le document WO 01/08905, et un disque.The wheel comprises a rim, for example such as that described in WO 01/08905, and a disc.

[0005] Dans un ensemble monté, les bourrelets du pneumatique sont en appui sur des sièges de la jante. Les diamètres moyens des deux sièges sont différents pour faciliter le montage et le démontage de l'appui de soutien sur la jante. Dans la jante décrite dans, le document WO 01/08905, le siège le plus proche de l'intérieur du véhicule possède le diamètre moyen le plus grand.In a mounted assembly, the beads of the tire are supported on seats of the rim. The average diameters of the two seats are different to facilitate the assembly and disassembly of the support support on the rim. In the rim described in WO 01/08905, the seat closest to the inside of the vehicle has the largest average diameter.

[0006] L'appui de soutien est porté circonférentiellement par une portée d'appui de la jante, située entre les deux sièges. Il est constitué par exemple en un matériau élastomérique déformable de manière élastique, qui empêche l'affaissement de la bande de roulement lorsque l'ensemble monté roule en mode dégradé, c'est-à-dire lorsque la pression régnant dans le pneumatique est insuffisante ou nulle.The support support is worn circumferentially by a bearing surface of the rim, located between the two seats. It is constituted for example by an elastically deformable elastomeric material, which prevents the tread from sagging when the mounted assembly rolls in degraded mode, that is to say when the pressure prevailing in the tire is insufficient. or none.

[0007] Dans la suite de la description, on appelle déjantage le fait pour un bourrelet de quitter son siège d'appui vers l'extérieur de la jante, et décoincement le fait pour un bourrelet de quitter son siège d'appui vers l'intérieur de la jante.In the following description, it is called the fact for a bead to leave its support seat to the outside of the rim, and unhooking makes it for a bead to leave his seat support to the inside the rim.

[0008] Pour empêcher le décoincement du bourrelet porté par le siège de plus grand diamètre moyen, la jante décrite dans le document WO 01/08905 est munie d'un bossage de sécurité prolongeant axialement le siège vers l'intérieur de la jante. On dit que le bossage de sécurité a une fonction d'anti-décoincement.To prevent loosening of the bead carried by the seat of larger average diameter, the rim described in WO 01/08905 is provided with a boss safety axially extending the seat towards the inside of the rim. It is said that the safety boss has an anti-decoupling function.

[0009] Pour évaluer la robustesse d'une jante à ranti-décoincement, on soumet classiquement un ensemble monté comprenant cette jante à différents tests de roulage en mode dégradé, notamment à un test à pression nulle.To evaluate the robustness of a rim-riddling rim, conventionally subjected a mounted assembly comprising this rim to different rolling tests in degraded mode, including a zero pressure test.

[0010] En particulier, les constructeurs automobile exigent actuellement que la fonction anti-décoincement des jantes soit assurée correctement sur un train avant, qui est le plus sollicité, dans chacune des deux situations extrêmes suivantes :In particular, the car manufacturers currently require that the anti-decoupling function of the rims is provided correctly on a front axle, which is the most requested, in each of the following two extreme situations:

- lors d'un freinage d'urgence soutenu,- during sustained emergency braking,

- lors d'un virage soutenu.- during a sustained turn.

[0011] Des essais réalisés sur la jante décrite dans le document WO 01/08905 ont montré que cette jante satisfait parfaitement aux exigences actuelles des constructeurs en termes d'anti-décoincement. Le bossage réalise donc convenablement sa fonction d'anti- décoincement.Tests carried out on the rim described in WO 01/08905 have shown that this rim perfectly meets the current requirements of manufacturers in terms of anti-decoupling. The boss thus properly performs its anti-decoupling function.

[0012] Or, les inventeurs de la présente invention ont eu l'idée de réaliser des essais encore plus contraignants pour l'ensemble monté porté parole train avant, en le soumettant à un essai de roulage en mode dégradé lors d'un freinage d'urgence soutenu, les roues avant braquées.However, the inventors of the present invention have had the idea to perform tests even more restrictive for all mounted worn word forward train, subjecting it to a test run in degraded mode during a braking d urgency supported, the front wheels steered.

[0013] Les contraintes subies par l'ensemble monté au cours de ce nouveau type de test sont bien supérieures à celles subies par l'ensemble monté au cours des tests classiquement réalisés, si bien que les inventeurs ont pu déceler des voies de perfectionnement de la jante de l'état de la technique au delà des exigences habituelles d'anti-décoincement des constructeurs.The constraints experienced by the assembly mounted during this new type of test are much greater than those suffered by the assembly mounted during the tests conventionally performed, so that the inventors were able to identify ways of improving the rim of the state of the art beyond the usual requirements of anti-decoupling manufacturers.

[0014] Plus précisément, les inventeurs ont constaté que lors de ce nouveau test, un décoincement pouvait se produire sur le siège disposé du côté de l'intérieur du véhicule.More specifically, the inventors have found that during this new test, a detachment could occur on the seat disposed on the side of the vehicle interior.

[0015] Ainsi, l'invention a pour objet une jante de véhicule, de révolution, destinée au montage d'un pneumatique, comportant un premier siège destiné à être disposé du côté intérieur du véhicule et un second siège, le premier siège étant prolongé axialement, vers le second siège, par un bossage de sécurité et comportant :Thus, the invention relates to a vehicle rim, of revolution, for mounting a tire, having a first seat to be arranged on the side vehicle interior and a second seat, the first seat being extended axially towards the second seat, by a safety boss and comprising:

- un fond tronconique confondu localement avec un cône de révolution ouvert vers le second siège et coaxial à la jante, eta frustoconical bottom confused locally with a cone of revolution open towards the second seat and coaxial with the rim, and

- un bord interne prolongeant le fond du premier siège vers le second siège.an inner edge extending the bottom of the first seat towards the second seat.

[0016] Cette jante est caractérisée en ce que, du côté du bossage, le bord interne du premier siège tangente un cône de révolution coaxial à la jante et ouvert vers le second siège, d'angle au sommet supérieur à 103°.This rim is characterized in that, on the side of the boss, the inner edge of the first seat tangent a cone of revolution coaxial with the rim and open to the second seat, with an apex angle greater than 103 °.

[0017] On utilise la définition courante d'un cône de révolution, c'est-à-dire un solide de révolution à base circulaire terminé en pointe.We use the current definition of a cone of revolution, that is to say, a solid base circular revolution terminated tip.

[0018] Grâce à l'invention, le bord du premier siège, orienté du côté du bossage, est suffisamment incliné pour réaliser une barrière qui empêche le décoincement du bourrelet en appui sur le premier siège.Thanks to the invention, the edge of the first seat, oriented on the side of the boss, is sufficiently inclined to provide a barrier which prevents the release of the bead bearing on the first seat.

[0019] Selon un mode de réalisation particulier, du côté du bossage, le bord interne du premier siège tangente un cône de révolution coaxial à la jante et ouvert vers le second siège, d'angle au sommet supérieur à 110°. Les inventeurs ont en effet constaté que la jante est particulièrement robuste à l'anti-décoincement lorsque le premier siège présente cette caractéristique.According to a particular embodiment, the side of the boss, the inner edge of the first seat tangent a cone of revolution coaxial with the rim and open to the second seat, with an apex angle greater than 110 °. The inventors have indeed found that the rim is particularly robust anti-decoupling when the first seat has this characteristic.

[0020] De manière optionnelle, le premier siège a un diamètre moyen inférieur au diamètre moyen du second siège. Dans ce mode de réalisation, c'est le siège disposé du côté extérieur du véhicule et le plus proche du disque de la roue qui a le plus grand diamètre.[0020] Optionally, the first seat has a mean diameter smaller than the average diameter of the second seat. In this embodiment, it is the seat disposed on the outside of the vehicle and closest to the disc of the wheel which has the largest diameter.

[0021] Selon un autre mode de réalisation, le premier siège a un diamètre moyen supérieur au diamètre moyen du second siège. Dans ce mode de réalisation illustré dans les figures jointes, c'est le siège de plus petit diamètre moyen qui est disposé du côté extérieur du véhicule et le plus proche du disque de la roue.According to another embodiment, the first seat has an average diameter greater than the average diameter of the second seat. In this embodiment illustrated in the accompanying figures, it is the seat of smaller average diameter which is disposed on the outside of the vehicle and closest to the disk of the wheel.

[0022] Selon un mode de réalisation préférentiel, le siège de diamètre moyen inférieur est prolongé axialement vers le siège de diamètre moyen supérieur par une portée d'appui de soutien de bande de roulement. C'est ce mode de réalisation qui est illustré dans les figures jointes. Cependant, la géométrie particulière selon l'invention du siège disposé du côté intérieur du véhicule s'applique aussi dans le cas d'un ensemble monté sans appui et quels que soient les diamètres et positions respectives des sièges de la jante.According to a preferred embodiment, the lower middle diameter seat is extended axially towards the upper middle diameter seat by a bearing surface. tread support. It is this embodiment which is illustrated in the accompanying figures. However, the particular geometry according to the invention of the seat disposed on the inside of the vehicle also applies in the case of a mounted assembly without support and whatever the diameters and respective positions of the seats of the rim.

[0023] Selon un premier mode de réalisation particulier du bord interne du premier siège, celui-ci est confondu localement avec le cône de révolution coaxial à la jante.According to a first particular embodiment of the inner edge of the first seat, it is locally confused with the cone of revolution coaxial with the rim.

[0024] Selon un second mode de réalisation particulier, le bord interne du premier siège est confondu localement avec un tore coaxial à la jante, le tore étant radialement extérieur au premier siège.According to a second particular embodiment, the inner edge of the first seat coincides locally with a torus coaxial with the rim, the torus being radially external to the first seat.

[0025] On utilise la définition mathématique d'un tore, c'est-à-dire une surface de révolution engendrée par un cercle qui tourne autour d'un axe situé dans son plan et ne passant pas par son centre.We use the mathematical definition of a torus, that is to say a surface of revolution generated by a circle that rotates about an axis located in its plane and not passing through its center.

[0026] De manière optionnelle, le rayon de courbure de l'arc de cercle générateur du bord interne du premier siège est compris entre 5 mm et 6 mm.Optionally, the radius of curvature of the generating circular arc of the inner edge of the first seat is between 5 mm and 6 mm.

[0027] De manière optionnelle, le premier siège comprend un bord externe prolongeant le fond du premier siège à l'opposé du bord interne.Optionally, the first seat comprises an outer edge extending the bottom of the first seat opposite the inner edge.

[0028] De manière optionnelle, le bord externe du premier siège est confondu localement avec un tore coaxial à la jante, le tore étant radialement extérieur au premier siège.Optionally, the outer edge of the first seat coincides locally with a torus coaxial with the rim, the torus being radially external to the first seat.

[0029] Avantageusement, la jante est telle que :[0029] Advantageously, the rim is such that:

- le bord externe du premier siège est conformé de manière que le cône confondu avec le fond du premier siège intersecte le tore confondu avec le bord externe du premier siège selon deux cercles d'intersection,- The outer edge of the first seat is shaped so that the cone coincides with the bottom of the first seat intersects the torus coincides with the outer edge of the first seat in two circles of intersection,

- Lt est la longueur de l'enveloppe convexe de l'intersection du premier siège avec le plan perpendiculaire à l'axe de la jante, décalé axialement en direction du second siège de 6 mm par rapport au cercle d'intersection le plus proche du bord externe du premier siège,- L t is the length of the convex hull of the intersection of the first seat with the plane perpendicular to the rim axis, axially offset towards the second seat by 6 mm from the nearest intersection circle the outer edge of the first seat,

- Lp est défini de la façon suivante : • dans un premier plan axial de la jante, le premier siège et le bossage définissent des premier et second profils symétriques par rapport à l'axe de la jante,- L p is defined as follows: In a first axial plane of the rim, the first seat and the boss define first and second profiles symmetrical with respect to the axis of the rim,

• un point de raccordement entre le fond et le bord interne sur le premier profil, et un point courant sur le second profil, permettent de définir un second plan normal au premier plan et contenant le point de raccordement et le point courant,A point of connection between the bottom and the inner edge on the first profile, and a current point on the second profile, make it possible to define a second plane normal to the foreground and containing the connection point and the current point,

• Lp est la longueur maximale de l'enveloppe convexe de l'intersection de la jante avec le second plan, lorsque le point courant décrit le second profil, et telle que :• L p is the maximum length of the convex hull of the intersection of the rim with the second plane, when the current point describes the second profile, and such that:

L pour Lt < 1 510 mm -S- ≥ 101,9% ; etL for L t <1510 mm -S- ≥ 101.9%; and

T ^ i «m L 61594-L pour L. > 1 510 mm -£• > '-. T ^ i "m L-61594 L to L> 1510 mm - £ •>'-.

F ' L1 64850 F 'L 1 64850

[0030] On définit un plan axial comme un plan contenant l'axe de révolution de la jante.[0030] An axial plane is defined as a plane containing the axis of revolution of the rim.

[0031] Pour déterminer le profil optimal du bossage de sécurité, les inventeurs ont fabriqué plusieurs prototypes de jantes. Chaque jante a été soumise à des tests d'anti- décoincement et à des tests de montage et de démontage de pneumatiques.To determine the optimal profile of the safety boss, the inventors have manufactured several prototypes of rims. Each rim was subjected to anti-decoupling tests and tire assembly and disassembly tests.

[0032] Ces tests ont permis de déterminer que pour éviter un décoincement il est avantageux de déterminer la géométrie exacte du bord interne et du bossage du premier siège de jante pour respecter les limites précédentes.These tests have determined that to avoid a detachment it is advantageous to determine the exact geometry of the inner edge and the boss of the first rim seat to meet the previous limits.

[0033] Ces tests ont aussi montré qu'il est souhaitable de respecter les valeurs[0033] These tests have also shown that it is desirable to respect the values

L suivantes du rapport — pour que le démontage du pneumatique de la jante soit toujoursL following of the report - so that the disassembly of the tire from the rim is always

possible dans des conditions normales :possible under normal conditions:

Lp ^ 55925 -Lt Lt " 53333L p ^ t L t -L 55925 "53333

[0034] De préférence pour un diamètre de roue inférieur à 460 mm soit pour : Lt < 1 500 mm on a : -^- ≤ 102,1% .Preferably for a wheel diameter of less than 460 mm, for: L t <1500 mm we have: - ^ - ≤ 102.1%.

[0035] Selon un mode de réalisation particulier, le bossage de sécurité comprend une partie tronconique confondue localement avec un cône de révolution ouvert vers le premier siège et coaxial à la jante.According to a particular embodiment, the safety boss comprises a frustoconical portion locally confused with a cone of revolution open to the first seat and coaxial with the rim.

[0036] Selon un mode de réalisation particulier, le bossage de sécurité comprend une partie cylindrique confondue localement avec un cylindre de révolution coaxial à la jante, et prolongeant la partie tronconique du bossage vers le premier siège.According to a particular embodiment, the safety boss comprises a cylindrical portion locally confused with a cylinder of revolution coaxial with the rim, and extending the frustoconical portion of the boss to the first seat.

[0037] L'invention sera mieux comprise à la lecture de la description qui va suivre, donnée uniquement à titre d'exemple et faite en se référant aux dessins dans lesquels :The invention will be better understood on reading the description which follows, given solely by way of example and with reference to the drawings in which:

- la figure 1 est une vue en coupe axiale d'un ensemble monté comprenant une jante selon l'invention,FIG. 1 is a view in axial section of a mounted assembly comprising a rim according to the invention,

- la figure 2 est une vue détaillée selon une coupe axiale de la jante représentée sur la figure 1,FIG. 2 is a detailed view in axial section of the rim shown in FIG. 1,

- la figure 3 est une vue détaillée du siège de plus grand diamètre de la jante représentée sur la figure 2,FIG. 3 is a detailed view of the seat of larger diameter of the rim shown in FIG. 2;

- la figure 4 est une vue d'une variante du siège représenté sur la figure 3, etFIG. 4 is a view of a variant of the seat shown in FIG. 3, and

- la figure 5 est une vue du siège de plus grand diamètre de la jante représentée sur la figure 2.- Figure 5 is a view of the seat of larger diameter of the rim shown in Figure 2.

[0038] On a représenté sur la figure 1, dans un plan axial P1, un ensemble monté désigné par la référence générale 10. L'ensemble monté est sensiblement de révolution et comprend une roue 12, un pneumatique 14 et un appui 16 de soutien de bande de roulement.FIG. 1 shows, in an axial plane P 1 , a mounted assembly designated by the general reference 10. The assembled assembly is substantially of revolution and comprises a wheel 12, a tire 14 and a support 16 of tread support.

[0039] Le pneumatique 12 comprend classiquement une bande de roulement 18 réunie, au moyen de deux flancs 20, à deux bourrelets 22. Il est renforcé par une armature de carcasse radiale formée d'une nappe (non représentée) de câbles usuellement textiles (d'autres types ou natures de renforts sont aussi possibles) ancrée dans chaque bourrelet 22 autour d'une tringle 24. [0040] La roue 12 comprend une jante 26 représentée plus en détail sur la figure 2. La jante 26, vue en coupe dans le plan P1 , comporte deux profils symétriques par rapport à l'axe de l'ensemble monté. Seul un des deux profils est représenté sur la figure 2.The tire 12 conventionally comprises a tread 18 joined, by means of two sidewalls 20, to two beads 22. It is reinforced by a radial carcass reinforcement formed of a sheet (not shown) of usually textile cables ( other types or types of reinforcement are also possible) anchored in each bead 22 around a rod 24. The wheel 12 comprises a rim 26 shown in more detail in Figure 2. The rim 26, sectional view in the plane P 1 , has two symmetrical profiles relative to the axis of the mounted assembly. Only one of the two profiles is shown in Figure 2.

[0041] La jante 26 comprend une portée d'appui 28 destinée à supporter l'appui de soutien 16.The rim 26 includes a bearing surface 28 for supporting the support support 16.

[0042] La jante 26 comprend également des premier 30 et second 32 sièges sur lesquels les bourrelets 22 sont en appui. Le premier siège 30 a un diamètre moyen supérieur au diamètre moyen du second siège 32. Lorsque la roue 12 est montée sur un véhicule, le premier siège 30 est orienté vers le véhicule.The rim 26 also comprises first 30 and second 32 seats on which the beads 22 are supported. The first seat 30 has a mean diameter greater than the average diameter of the second seat 32. When the wheel 12 is mounted on a vehicle, the first seat 30 is oriented towards the vehicle.

[0043] Le premier siège 30, représenté plus en détail sur la figure 3, comprend un fond 34, un bord interne 36 prolongeant le fond 34 vers le second siège 32, et un bord externe 38 prolongeant le fond 34 à l'opposé du bord interne 36.The first seat 30, shown in more detail in Figure 3, comprises a bottom 34, an inner edge 36 extending the bottom 34 to the second seat 32, and an outer edge 38 extending the bottom 34 opposite the inner edge 36.

[0044] Le bord interne 36 est prolongé vers le second siège 32 par un bossage de sécurité 40, et le bord externe 38 est prolongé à l'opposé du fond 34 par une saillie 42.The inner edge 36 is extended towards the second seat 32 by a safety boss 40, and the outer edge 38 is extended opposite the bottom 34 by a projection 42.

[0045] Le bossage de sécurité 40 est prolongé vers le second siège 32 par une gorge de montage 43.The safety boss 40 is extended towards the second seat 32 by a mounting groove 43.

[0046] Le bord externe 38 est confondu localement avec un tore 44 coaxial à la jante. Le cercle générateur du tore 44 a un rayon sensiblement égal à 12 mm.The outer edge 38 is locally confused with a torus 44 coaxial with the rim. The generating circle of the torus 44 has a radius substantially equal to 12 mm.

[0047] Le fond 34 est confondu localement avec un cône de révolution 46 ouvert vers le second siège 32, coaxial à la jante 26 et d'angle au sommet α sensiblement égal à 30° On parle alors du fond tronconique 34.The bottom 34 is locally confused with a cone of revolution 46 open to the second seat 32, coaxial with the rim 26 and at the apex angle α substantially equal to 30 ° We speak then frustoconical bottom 34.

[0048] Selon un premier mode de réalisation représenté sur la figure 3, le bord interne 36 est confondu localement avec un cône de révolution 48 ouvert vers le second siège 32, coaxial à la jante 26 et d'angle au sommet β sensiblement égal à 115°.According to a first embodiment shown in FIG. 3, the inner edge 36 coincides locally with a cone of revolution 48 open towards the second seat 32, coaxial with the rim 26 and with an apex angle β substantially equal to 115 °.

[0049] Selon un second mode de réalisation représenté sur la figure 4, le bord interne 36 est confondu localement avec un tore 50 coaxial à la jante 26, le cercle générateur du tore 50 ayant un rayon sensiblement égal à 5,5 mm. Le bord intérieur est adjacent au bossage 40. Dans ce cas, le bord interne est tangent au cône 48 d'angle au sommet supérieur à 110°, ici environ 115°, au niveau du point d'inflexion entre le bord intérieur et la première partie du bossage 40, elle-aussi circulaire mais de courbure inversée.According to a second embodiment shown in FIG. 4, the inner edge 36 is locally confused with a torus 50 coaxial with the rim 26, the generating circle of the torus 50 having a radius substantially equal to 5.5 mm. The inner edge is adjacent to the boss 40. In this case, the inner edge is tangent to the cone 48 with an apex angle greater than 110 °, here about 115 °, at the point of inflection between the inner edge and the first edge. part of the boss 40, also circular but inverted curvature.

[0050] En conséquence, dans les deux modes de réalisation, le bord interne 36 tangente le cône 48.Accordingly, in both embodiments, the inner edge 36 tangents the cone 48.

[0051] Le bossage de sécurité 40 comprend une partie tronconique 52 confondue localement avec un cône de révolution 54 ouvert vers le premier siège 30, coaxial à la jante 26 et d'angle au sommet γ sensiblement égal à 150°.The safety boss 40 comprises a frustoconical portion 52 coincident locally with a cone of revolution 54 open to the first seat 30, coaxial with the rim 26 and the apex angle γ substantially equal to 150 °.

[0052] Selon un mode de réalisation particulier du bossage de sécurité 40, représenté sur la figure 4, le bossage de sécurité 40 comprend en outre une partie cylindrique 56 confondue localement avec un cylindre de révolution 58 coaxial à la jante 26 et prolongeant la partie tronconique 52 du bossage vers le bord interne 36 du premier siège 30.According to a particular embodiment of the safety boss 40, shown in Figure 4, the safety boss 40 further comprises a cylindrical portion 56 locally confused with a cylinder of revolution 58 coaxial with the rim 26 and extending the portion frustoconical 52 of the boss towards the inner edge 36 of the first seat 30.

[0053] De manière à estimer la qualité de la fonction d'anti-décoincement du bossage de sécurité 40, à partir de la simple définition géométrique de ce bossage, nous introduisons les longueurs Lt et Lp dont nous allons maintenant détailler le calcul.In order to estimate the quality of the anti-loosening function of the safety boss 40, from the simple geometric definition of this boss, we introduce the lengths L t and L p which we will now detail the calculation. .

[0054] Le cône 46 intersecte le tore 44 selon deux cercles d'intersection C1 et C2 , le cercle C1 étant le plus proche du bord externe du premier siège 30.The cone 46 intersects the core 44 in two circles of intersection C 1 and C 2 , the circle C 1 being closest to the outer edge of the first seat 30.

[0055] On note P2 le plan perpendiculaire à l'axe de la jante 26, décalé axialement en direction du second siège 32 d'une distance d égale à 6 mm par rapport au cercle C1.Note P 2 the plane perpendicular to the axis of the rim 26, axially offset towards the second seat 32 by a distance d equal to 6 mm with respect to the circle C 1 .

[0056] La longueur Lt est alors égale à la longueur de l'enveloppe convexe 60 de l'intersection du premier siège 30 avec le plan P2. Si le premier siège est parfaitement de révolution, cette intersection est un cercle et la longueur Lt est égale au périmètre de ce cercle. [0057] La valeur de d est choisie arbitrairement de façon à obtenir une longueur Lt de référence, sensiblement égale au périmètre du premier siège ainsi qu'au périmètre intérieur du bourrelet 22 du pneumatique 14.The length L t is then equal to the length of the convex envelope 60 of the intersection of the first seat 30 with the plane P 2 . If the first seat is perfectly revolution, this intersection is a circle and the length L t is equal to the perimeter of this circle. The value of d is chosen arbitrarily so as to obtain a reference length L t , substantially equal to the perimeter of the first seat and the inside perimeter of the bead 22 of the tire 14.

[0058] On a représenté sur la figure 5 une vue en coupe dans le plan P1 du premier siège 30, sur laquelle les deux profils symétriques sont représentés.There is shown in Figure 5 a sectional view in the plane P 1 of the first seat 30, on which the two symmetrical profiles are shown.

[0059] Par souci de clarté, l'échelle entre le premier siège et le rayon de la jante n'est pas respectée.For the sake of clarity, the scale between the first seat and the radius of the rim is not respected.

[0060] On utilise l'indice a pour décrire les éléments du profil supérieur et l'indice b pour décrire les éléments du profil inférieur.The index a is used to describe the elements of the upper profile and the index b to describe the elements of the lower profile.

[0061] On note Xa le point de raccordement entre le fond 34a et le bord interne 36a.Xa is the connection point between the bottom 34a and the inner edge 36a.

[0062] On note Xb un point courant sur le premier siège 30b et le bossage de sécurité 40b.Xb is a current point on the first seat 30b and the safety boss 40b.

[0063] On note P3 le plan normal au plan P1 contenant les deux points Xa et Xb.Note P 3 the plane normal to the plane P 1 containing the two points Xa and Xb.

[0064] La longueur Lp est égale à la longueur maximale de l'enveloppe convexe 62 de l'intersection de la jante 26 avec le plan P3 , lorsque le point Xb décrit le premier siège 30b et le bossage de sécurité 40b.The length L p is equal to the maximum length of the convex envelope 62 of the intersection of the rim 26 with the plane P 3 , when the point Xb describes the first seat 30b and the safety boss 40b.

[0065] La valeur Lp correspond sensiblement à la valeur que le périmètre intérieur du bourrelet 22 du pneumatique 14 doit franchir lors d'une opération de démontage ou lors d'un décoincement.The value L p substantially corresponds to the value that the inner perimeter of the bead 22 of the tire 14 must pass during a disassembly operation or during a detachment.

[0066] Le rapport entre les deux longueurs Z^ et Lt définies ci-dessus doit être tel que, d'une part, la fonction d'anti-décoincement est correctement assurée par le bossage de sécurité 40 et, d'autre part, le montage et le démontage du pneumatique 14 sur la roue 12 reste possible en utilisant des outils classiques de garagiste.The ratio between the two lengths Z ^ and L t defined above must be such that, on the one hand, the anti-decoupling function is correctly provided by the safety boss 40 and on the other hand , the mounting and dismounting of the tire 14 on the wheel 12 remains possible using conventional garage tools.

[0067] Les opérations de montage d'un pneumatique et d'un appui sur une jante selon l'invention sont notamment décrites dans le document FR 2 819 218. La présence de la L gorge de montage 43 permet d'effectuer ce montage sans que le rapport — ne soitThe mounting operations of a tire and a support on a rim according to the invention are described in particular in document FR 2 819 218. The presence of the The mounting groove 43 makes it possible to carry out this assembly without the ratio - being

déterminant. En revanche, le démontage du bourrelet du pneumatique disposé sur le premier siège 30 est effectué par une poussée progressive d'un rouleau contre ce bourrelet axialement vers la gorge de montage, l'ensemble monté étant mis en rotation lente. Cette poussée déplace localement le bourrelet et lui fait franchir progressivement le bord intérieur du siège puis le bossage de sécurité. Le bourrelet tombe alors dans la gorge dedetermining. In contrast, the disassembly of the bead of the tire disposed on the first seat 30 is effected by a progressive thrust of a roller against this bead axially towards the mounting groove, the assembled assembly being rotated slowly. This push locally moves the bead and makes it progressively cross the inner edge of the seat and the safety boss. The bead then falls into the throat of

L montage. C'est cette opération pour laquelle le rapport — est déterminant.The assembly. It is this operation for which the report - is determining.

[0068] Des essais réalisés par les inventeurs ont permis de déterminer qu'il était avantageux que la jante soit telle que les relations suivantes soient respectées pour limiter les phénomènes de décoincement :Tests carried out by the inventors made it possible to determine that it was advantageous for the rim to be such that the following relationships are respected in order to limit the phenomena of loosening:

L pour Lt < 1 510 mm -*-≥ 101,9% ; etL for L t <1510 mm - * - ≥ 101.9%; and

A pour L r. > s κ 1 51,n0 mm — ^ >- 67594-i( *-.A for L r. > s κ 1 51, n0 mm - ^> - 67594-i ( * -.

V ' Lt 64850 V 'L t 64850

[0069] On constate que plus la valeur de Lt (liée au diamètre de la jante) augmente,It is found that the more the value of L t (related to the diameter of the rim) increases,

plus la limite minimale du rapport — à respecter diminue.the lower the minimum limit of the ratio - to be respected decreases.

[0070] Ces tests ont aussi montré que pour permettre le démontage des pneumatiques de leurs jantes dans des conditions acceptables en atelier ou dans des garages, il est aussi souhaitable de respecter les limites suivantes :These tests have also shown that to allow disassembly tires their rims in acceptable conditions in the workshop or in garages, it is also desirable to meet the following limits:

Lr < 55925 -L1 L r < 55925 -L 1

Lt 53333L t 53333

[0071] Pour les petits diamètres, comme 420 et 440 mm, il est aussi préférable de respecter la limite suivante :For small diameters, such as 420 and 440 mm, it is also preferable to respect the following limit:

LThe

S- ≤ 102,1%S- ≤ 102.1%

A [0072] L'observation des deux ensembles de limites indique que plus le diamètre de la jante augmente, plus la zone de définition de la géométrie des premier siège et bossage adjacent est étroite.AT The observation of the two sets of limits indicates that as the diameter of the rim increases, the area of definition of the geometry of the first seat and adjacent boss is narrow.

[0073] Les tests réalisés ont fait varier la géométrie du bord intérieur, selon les variantes des figures 3 et 4, la hauteur du bossage 40 relativement aux diamètres des jantes ainsi que la largeur axiale de la partie cylindrique 56 du bossage 40 dans la variante de la figure 4.The tests carried out varied the geometry of the inner edge, according to the variants of Figures 3 and 4, the height of the boss 40 relative to the diameters of the rims and the axial width of the cylindrical portion 56 of the boss 40 in the variant of Figure 4.

[0074] On notera enfin que l'invention ne se limite pas aux modes de réalisation précédemment décrits tout en restant dans la portée des revendications qui suivent. Finally, note that the invention is not limited to the embodiments described above while remaining within the scope of the following claims.

Claims

REVENDICAΉONS REVENDICAΉONS 1. Jante (26) de véhicule, de révolution, destinée au montage d'un pneumatique (14), comportant un premier siège (30) destiné à être disposé du côté intérieur du véhicule et un second siège (32), le premier siège (30) étant prolongé axialement, vers le second siège (32), par un bossage de sécurité (40) et comportant :A vehicle rim (26) for revolution, for mounting a tire (14), comprising a first seat (30) intended to be arranged on the inside of the vehicle and a second seat (32), the first seat (30) being extended axially towards the second seat (32) by a safety boss (40) and comprising: - un fond tronconique (34) confondu localement avec un cône de révolution (46) ouvert vers le second siège (32) et coaxial à la jante (26), et- a frustoconical bottom (34) locally confused with a cone of revolution (46) open towards the second seat (32) and coaxial with the rim (26), and - un bord interne (36) prolongeant le fond du premier siège (30) vers le second siège (32), caractérisée en ce que du côté du bossage, le bord interne (36) du premier siège (30) tangente un cône de révolution (48) coaxial à la jante (26) et ouvert vers le second siège (32), d'angle au sommet supérieur à 103°.- an inner edge (36) extending the bottom of the first seat (30) to the second seat (32), characterized in that the side of the boss, the inner edge (36) of the first seat (30) tangents a cone of revolution (48) coaxial with the rim (26) and open to the second seat (32), with an apex angle greater than 103 °. 2. Jante (26) selon la revendication 1, dans laquelle, du côté du bossage (40), le bord interne (36) du premier siège (30) tangente un cône de révolution (48) coaxial à la jante (26) et ouvert vers le second siège (32), d'angle au sommet supérieur à 110°.2. Rim (26) according to claim 1, wherein, on the side of the boss (40), the inner edge (36) of the first seat (30) tangents a cone of revolution (48) coaxial with the rim (26) and open to the second seat (32), with an apex angle greater than 110 °. 3. Jante (26) selon l'une des revendications 1 et 2, dans laquelle le premier siège (30) a un diamètre moyen inférieur au diamètre moyen du second siège (32).3. Rim (26) according to one of claims 1 and 2, wherein the first seat (30) has a mean diameter less than the average diameter of the second seat (32). 4. Jante (26) selon l'une des revendications 1 et 2, dans laquelle le premier siège (30) a un diamètre moyen supérieur au diamètre moyen du second siège (32).4. Rim (26) according to one of claims 1 and 2, wherein the first seat (30) has an average diameter greater than the average diameter of the second seat (32). 5. Jante (26) selon l'une des revendications 3 et 4, dans laquelle le siège de diamètre moyen inférieur (32) est prolongé axialement vers le siège de diamètre moyen supérieur (30) par une portée (28) d'appui de soutien de bande de roulement (16).5. Rim (26) according to one of claims 3 and 4, wherein the seat of lower average diameter (32) is axially extended to the upper middle diameter seat (30) by a bearing surface (28) of tread support (16). 6. Jante (26) selon l'une des revendications 1 à 5, dans laquelle le bord interne (36) du premier siège (30) est confondu localement avec le cône de révolution (48) coaxial à la jante (26). 6. Rim (26) according to one of claims 1 to 5, wherein the inner edge (36) of the first seat (30) coincides locally with the cone of revolution (48) coaxial with the rim (26). 7. Jante (26) selon l'une des revendications 1 à 5, dans laquelle le bord interne (36) du premier siège (30) est confondu localement avec un tore (50) coaxial à la jante (26), le tore (50) étant radialement extérieur au premier siège (30).7. Rim (26) according to one of claims 1 to 5, wherein the inner edge (36) of the first seat (30) is locally confused with a torus (50) coaxial with the rim (26), the torus ( 50) being radially external to the first seat (30). 8. Jante (26) selon la revendication 7, dans laquelle le rayon de courbure de l'arc de cercle générateur du bord interne (36) du premier siège (30) est compris entre 5 mm et 6 mm.Rim (26) according to claim 7, wherein the radius of curvature of the generating circle arc of the inner edge (36) of the first seat (30) is between 5 mm and 6 mm. 9. Jante (26) selon l'une quelconque des revendications 1 à 8, dans laquelle le premier siège (30) comprend un bord externe (38) prolongeant le fond (34) du premier siège (30) à l'opposé du bord interne (36).The rim (26) according to any one of claims 1 to 8, wherein the first seat (30) comprises an outer edge (38) extending the bottom (34) of the first seat (30) away from the edge internal (36). 10. Jante (26) selon la revendication 9, dans laquelle le bord externe (38) du premier siège (30) est confondu localement avec un tore (44) coaxial à la jante (26), le tore (44) étant radialement extérieur au premier siège (30).Rim (26) according to claim 9, wherein the outer edge (38) of the first seat (30) coincides locally with a torus (44) coaxial with the rim (26), the torus (44) being radially external at the first seat (30). 11. Jante (26) selon la revendication 10, dans laquelle :Rim (26) according to claim 10, wherein: - le bord externe (38) du premier siège (30) est conformé de manière que le cône (46) confondu avec le fond (34) du premier siège (30) intersecte le tore (44) confondu avec le bord externe (38) du premier siège (30) selon deux cercles (C1, C2 ) d'intersection,- the outer edge (38) of the first seat (30) is shaped so that the cone (46) coincides with the bottom (34) of the first seat (30) intersects the torus (44) coincides with the outer edge (38) of the first seat (30) in two intersecting circles (C 1 , C 2 ), - Lt est la longueur de l'enveloppe convexe (60) de l'intersection du premier siège (30) avec le plan perpendiculaire (P2 ) à l'axe de la jante (26), décalé axialement en direction du second siège (32) de 6 rnm par rapport au cercle d'intersection (C1) le plus proche du bord externe (38) du premier siège (30),- L t is the length of the convex casing (60) of the intersection of the first seat (30) with the plane perpendicular (P 2 ) to the axis of the rim (26), offset axially towards the second seat (32) of 6 nm with respect to the intersection circle (C 1 ) closest to the outer edge (38) of the first seat (30), - Lp est défini de la feçon suivante :- L p is defined in the following form: • dans un premier plan axial (P1) de la jante (26), le premier siège (30) et le bossage (40) définissent des premier (30a, 40a) et second (30b, 40b) profils symétriques par rapport à l'axe de la jante (26),In a first axial plane (P 1 ) of the rim (26), the first seat (30) and the boss (40) define first (30a, 40a) and second (30b, 40b) profiles which are symmetrical with respect to the the axis of the rim (26), • un point de raccordement (Xa) entre le fond (34a) et le bord interne (36a) sur le premier profil, et un point courant (Xb) sur le second profil, permettent de définir un second plan (P3) normal au premier plan (P1) et contenant le point de raccordement (Xa) et le point courant (Xb), • Lp est la longueur maximale de l'enveloppe convexe (62) de l'intersection de la jante (26) avec le second plan (P3), lorsque le point courant (Xb) décrit le second profil, et dans laquelle on a :A connection point (Xa) between the bottom (34a) and the inner edge (36a) on the first profile, and a current point (Xb) on the second profile, make it possible to define a second plane (P 3 ) normal to the foreground (P 1 ) and containing the point of connection (Xa) and the current point (Xb), • L p is the maximum length of the convex envelope (62) of the intersection of the rim (26) with the second plane (P 3 ), when the current point (Xb) describes the second profile, and in which we have: pour Lt < 1 510 mm -*-≥ 101,9% ; etfor L t <1510 mm - * - ≥ 101.9%; and pour L r1 ^ > i 1 5 cm10 mm - £^,-. > 67594-2,, '-.to L r 1 ^> i 1 5c m10 mm - £ ^ -. > 67594-2 ,, '-. ' Lt 64850'L t 64850 12. Jante (26) selon la revendication 11, dans laquelle :The rim (26) of claim 11, wherein: Lp ^, 55925 -Z,,L p , 55925-Z ,, Lt 53333L t 53333 13. Jante (26) selon la revendication 12, dans laquelle :The wheel (26) of claim 12, wherein: L pour Lt < 1 510 mm -*-≤ 102,1% . L.L for L t <1510 mm - * - ≤ 102.1%. L. 14. Jante (26) selon l'une quelconque des revendications précédentes, dans laquelle le bossage de sécurité (40) comprend une partie tronconique confondue localement avec un cône de révolution ouvert vers le premier siège (30) et coaxial à la jante (26).14. Rim (26) according to any one of the preceding claims, wherein the safety boss (40) comprises a frustoconical portion locally confused with a cone of revolution open to the first seat (30) and coaxial with the rim (26). ). 15. Jante (26) selon la revendication 14, dans laquelle le bossage de sécurité (40) comprend une partie cylindrique confondue localement avec un cylindre de révolution coaxial à la jante (26), et prolongeant la partie tronconique du bossage (40) vers le premier siège (30). 15. Rim (26) according to claim 14, wherein the safety boss (40) comprises a cylindrical portion locally confused with a cylinder of revolution coaxial with the rim (26), and extending the frustoconical portion of the boss (40) to the first seat (30).
EP05756839A 2004-07-08 2005-06-27 Vehicle wheel rim for mounting a tyre and a support element Withdrawn EP1768859A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0407580A FR2872739B1 (en) 2004-07-08 2004-07-08 VEHICLE RIM FOR MOUNTING TIRES AND SUPPORT SUPPORT
FR0501579A FR2881989B3 (en) 2005-02-16 2005-02-16 VEHICLE RIM FOR MOUNTING TIRES AND SUPPORT SUPPORT
PCT/EP2005/052990 WO2006010681A1 (en) 2004-07-08 2005-06-27 Vehicle wheel rim for mounting a tyre and a support element

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EP1768859A1 true EP1768859A1 (en) 2007-04-04

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EP05756839A Withdrawn EP1768859A1 (en) 2004-07-08 2005-06-27 Vehicle wheel rim for mounting a tyre and a support element

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EP (1) EP1768859A1 (en)
JP (1) JP2008505794A (en)
WO (1) WO2006010681A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2888776B1 (en) * 2005-07-19 2007-09-14 Michelin Soc Tech VEHICLE WHEEL WITH INEGAL DIAMETER SEATS AND ASSEMBLY OF A WHEEL AND SUPPORT SUPPORT
FR2910378B1 (en) 2006-12-22 2009-03-06 Michelin Soc Tech VEHICLE RIM FOR ASSEMBLING A PNEUMATIC.
DE102007053122A1 (en) 2007-11-08 2009-05-14 Bayerische Motoren Werke Aktiengesellschaft Passenger car vehicle wheel for PAX system tire, has rim and tire bracket section runs upwards to center of rim well and has increasing diameter
DE102013015701A1 (en) * 2013-09-20 2015-03-26 Audi Ag Device for the targeted guidance of a wheel relative to a vehicle body in a collision case and adapted rim for this purpose

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FR2713557B1 (en) * 1993-12-08 1996-03-01 Michelin & Cie Rim, support ring and assembly comprising said elements.
FR2748695B1 (en) * 1996-05-15 1998-06-26 Michelin & Cie WHEEL WITH RIM HAVING OUTSIDE INCLINED SEATS
FR2797224B1 (en) 1999-08-02 2002-02-08 Michelin Soc Tech SET OF A RIM AND SUPPORT SUPPORT
FR2800671A1 (en) * 1999-11-04 2001-05-11 Michelin Soc Tech RIM FOR RECEIVING A SUPPORT RING
FR2805214B1 (en) * 2000-02-21 2002-04-05 Michelin Soc Tech RIM AND ASSEMBLY OF SUCH A RIM WITH SUPPORT SUPPORT
FR2805491B1 (en) * 2000-02-28 2002-05-10 Michelin Soc Tech RIM WITH SEAT TILTS TOWARDS OUTSIDE AND ASSEMBLIES INCLUDING SUCH A RIM AND A SUPPORT FOR INFLATED SUPPORT
FR2819218A1 (en) * 2001-01-11 2002-07-12 Michelin Soc Tech METHOD FOR MOUNTING A TIRE ON A RIM, DEVICE AND TOOL FOR IMPLEMENTING A STEP OF THIS PROCESS
US20030166772A1 (en) * 2002-01-07 2003-09-04 Manoj Ajbani Tread supporting ring for use with a rim for a tire having two beads
FR2836865B1 (en) * 2002-03-11 2004-05-14 Michelin Soc Tech WHEEL WITH COMPOSITE RIM MADE BY RTM PROCESS
US6880596B2 (en) * 2002-04-26 2005-04-19 The Goodyear Tire & Rubber Company Tire assembly including tire support ring
JP3947178B2 (en) * 2004-03-29 2007-07-18 住友ゴム工業株式会社 Tire and rim assembly and support ring used therefor

Non-Patent Citations (1)

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Title
See references of WO2006010681A1 *

Also Published As

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JP2008505794A (en) 2008-02-28
WO2006010681A8 (en) 2007-12-21
WO2006010681A1 (en) 2006-02-02
US20080210357A1 (en) 2008-09-04

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