WO2017067869A1

WO2017067869A1 - Mounted assembly for bicycle

Info

Publication number: WO2017067869A1
Application number: PCT/EP2016/074829
Authority: WO
Inventors: Quentin FAUCRET
Original assignee: Compagnie Generale Des Etablissements Michelin; Michelin Recherche Et Technique S.A.
Priority date: 2015-10-22
Filing date: 2016-10-17
Publication date: 2017-04-27
Also published as: FR3042736B1; FR3042736A1

Abstract

The invention concerns a mounted assembly (1) for a two-wheeled vehicle, comprising a non-pneumatic tyre (2) mounted on a rim (3) and a wire clamping insert (5) applied to the entire radially inner circumference of the closed toroidal cavity (4) of the non-pneumatic tyre (2). The clamping insert (5) comprises clamping means (6) applying a prestressing force that clamps the radially inner portion (22) of the non-pneumatic tyre (2) onto the rim (3) by compression. The aim of the invention is to facilitate the mounting and clamping of the non-pneumatic tyre onto the rim and to offer flexibility in terms of mounting the tyre. According to the invention, the non-pneumatic tyre (2) comprises at least one circumferential discontinuity (7) passing through same, the radially inner portion (22) of the non-pneumatic tyre (2) comprises two deformable beads (23) that adapt geometrically to the rim (3) under the action of the clamping by compression, and the clamping insert (5) passes radially inwardly, in succession, through the radially inner portion (22) of the non-pneumatic tyre (2) and a hole in the rim, such that the clamping means (6) are positioned radially inside the rim (3).

Description

MOUNTED ASSEMBLY FOR BIKE

The invention relates to a mounted assembly for equipping a light vehicle, and, in particular, a light two-wheel bicycle type vehicle.

A mounted assembly is a roller assembly comprising a tire or a non-pneumatic tire mounted on a rim, and intended to equip a vehicle.

[0003] A tire is a hollow toroidal body constituted by at least one elastomeric material, subjected to a determined inflation pressure, a function of the dimensional characteristics of the tire and the load, pressure and speed stresses to which it is intended to be subjected. as defined, for example, by the standards of the European Technical Rim and Tire Organization ("ETRTO").

In the present invention, a non-pneumatic tire is a hollow toroidal body consisting of at least one polymeric material, intended to perform the function of a tire but not subjected to an inflation pressure. A rim, on which is intended to be mounted a tire or a non-pneumatic tire, comprises two flanges rims interconnected by a rim bottom. A rim may be constituted by a metallic or polymeric or composite material.

By light vehicle means a vehicle having a low mass, for example at most equal to 200 kg load, and moving at low speed, for example at most equal to 90 km / h. Although not limited to this application, the invention will be described in the particular case of a bicycle type two-wheel light vehicle.

[0007] A tire usually comprises a tread intended to come into contact with a ground via a running surface and connected by two sidewalls to two beads, intended to cooperate with a rim. In addition, a tire comprises a reinforcing reinforcement and, in particular, a carcass reinforcement connecting the two beads. A carcass reinforcement comprises at least one carcass layer, consisting of reinforcements parallel to each other and embedded in an elastomeric material, said elastomeric mixture. Reinforcements of the carcass layer, generally of textile and often, but not exclusively, of nylon, form, with a circumferential direction of the tire, tangent to the tread surface, an angle which may be comprised, for example, between 45 ° and 90 °. The carcass layer is generally wound, in each bead, from the inside to the outside of the tire, around a bead, to form from each bead a reversal. A bead wire is a circumferential reinforcing element, ensuring both the anchoring of the carcass layer in each bead and the tightening of said bead on the rim with which it is intended to come into contact. A bicycle tire rod may be, for example, aramid, which gives it flexibility and folding ability. A common tire, inflated to a predetermined pressure, has the disadvantage of having a variable inflation pressure, requiring continuous monitoring and possible pressure adjustments. It also has the disadvantage of being sensitive to a loss of partial pressure, in case of loss of tightness at the rim or piercing of the tread, or a loss of total pressure, in case of bursting of the tire.

To eliminate the stress of monitoring and pressure adjustment and the risk of loss of partial or total pressure of a tire, various non-pneumatic tire designs have been proposed.

According to a first known design, a non-pneumatic tire is constituted by a conventional non-inflated tire combined with an insert of micro cellular elastomeric material filling the tire cavity. Such an insert has the advantage of being usable with a conventional tire. On the other hand, the presence of the insert causes an increase in mass of the order of 50% of the mass of the tire alone and an increase in the rolling resistance of the order of 10%. Moreover, such an insert has the drawbacks of having a high cost, being difficult to select by the user and requiring mounting by an authorized dealer, given the difficulty of assembly.

According to a second known design, a non-pneumatic tire is constituted by the combination of a conventional tire and a solid chamber, filling the tire cavity. A solid chamber has the advantages of being economical, of being usable with a conventional tire and of being able to be mounted by the user. On the other hand, a solid chamber has the drawbacks of possibly requiring reinforced tools to be easily mounted, to cause a clamping of the non-pneumatic tire on the potentially insufficient rim, hence a possible rotation on the rim, and finally to cause an increase in rolling resistance of around 20%.

According to a third known design, a non-pneumatic tire is constituted by a solid tire, that is to say without cavity, for example polyurethane. A tire full of micro-cellular polyurethane can advantageously have different colors and different profiles, and looks externally to a conventional tire. On the other hand, a solid tire has the drawbacks of being expensive, of being difficult to select by the user, of being difficult to mount and of causing an increase in rolling resistance of the order of 10%.

According to a fourth known design, a non-pneumatic tire is constituted by an elastic wheel associated with a tread made of elastomeric material. Such a combination claims a decreased rolling resistance compared to that of a conventional tire. On the other hand, the cost of such a non-pneumatic tire is prohibitive, its assembly is difficult because of a precise sizing of the wheel and the absence of adjustment, and the selection of such a product by the user is delicate.

Finally, according to a fifth known design as described by the patent application US 20120318421 A1, a non-pneumatic tire is constituted by a hollow body made of elastomeric material, fixed on a rim by a clamping element, positioned circumferentially at a distance of 30.degree. inside of the non-pneumatic tire. This cable-type clamping element comprises two respectively locking and toothed ends connected together to ensure clamping, at a hole opening on the outside surface of the non-pneumatic tire.

This last state of the art, taken in reference, has the disadvantage of having a rim clamping element that can be difficult to insert into the non-pneumatic tire. Moreover, such a non-pneumatic tire of given dimension must be mounted on rim of suitable size. The inventors have set themselves the objective of proposing a mounted assembly comprising a non-pneumatic tire mounted on a rim, with a mounting and a tightening on rim facilitated and with a flexible mountability, that is to say possible on rims having different but similar axial widths, that is to say not differing by more than 20%.

This objective has been achieved by a mounted assembly for a two-wheeled vehicle, comprising a non-pneumatic tire mounted on a rim:

the non-pneumatic tire being constituted by a hollow toric body comprising at least one polymeric material and comprising a radially outer portion intended to come at least partly in contact with a ground, a radially inner portion at least partly resting on the rim; and a closed toric cavity,

the rim comprising two rim flanges interconnected by a rim bottom pierced by at least one rim hole,

the mounted assembly comprising a wire clamping insert applied over the entire radially inner circumference of the closed toric cavity,

-A clamping clamp comprising clamping means applying to the clamping insert a prestressing force ensuring clamping by crushing of the radially inner portion of the non-pneumatic tire on the rim,

the non-pneumatic tire comprising at least one circumferential through-gap, having two faces facing each other at least partly in contact with each other,

the radially inner portion of the non-pneumatic tire comprising two deformable beads geometrically adapting to the rim under the action of the crushing clamping

and the clamping insert successively traversing, radially inwards, the radially inner portion of the non-pneumatic tire and a rim hole, so that the clamping means are positioned radially inside the rim.

By convention, the circumferential directions XX ', axial YY' and radial ZZ 'respectively designate a direction tangent to the rolling surface, intended to come into contact with a ground, non-pneumatic tire in the direction of rotation of the bandage non-pneumatic, a direction parallel to the axis of rotation of the non-pneumatic tire pneumatic and a direction perpendicular to the axis of rotation of the non-pneumatic tire. By "radially inner", respectively "radially outer" is meant "closer to the axis of rotation of the non-pneumatic tire", respectively "further from the axis of rotation of the non-pneumatic tire". By "axially inner" or "axially outer" is meant "closer to the equatorial plane of the non-pneumatic tire", respectively "further from the equatorial plane of the non-pneumatic tire", the equatorial plane XZ of the non-pneumatic tire being the plane passing through the middle of the rolling surface of the non-pneumatic tire and perpendicular to the axis of rotation of the non-pneumatic tire. A non-pneumatic tire according to the invention is a hollow toric body consisting of at least one polymeric material. The nature of the polymeric material may possibly vary depending on the area of the non-pneumatic tire, for example depending on whether said zone is intended to come into contact with a ground or with the rim. In the field of pneumatics, the polymeric materials used are most often elastomeric materials obtained by mixing an elastomer, a reinforcing filler and vulcanizing agents, hence the name of elastomeric mixtures.

The non-pneumatic tire comprises at least one closed toric cavity, that is to say that it may optionally contain several closed toroidal cavities independent of each other. In addition, it comprises a radially outer portion intended to come at least partly in contact with a ground, via a rolling surface. It finally includes a radially inner portion in contact with the rim, intended to ensure its mounting and clamping on the rim.

The rim comprises two rim flanges interconnected by a rim bottom pierced by at least one rim hole. The rim flanges ensure the maintenance of the radially inner portion of the non-pneumatic tire, in the axial direction. In addition, the axial distance between the rim flanges defines the axial width of the rim. The rim base, which interconnects the two rim flanges, comprises at least one rim hole, and most often a single rim hole, intended to allow the passage of an inflation valve when the rim is used with a conventional tire. The mounted assembly comprises a wire clamping insert applied over the entire radially inner circumference of the closed ring cavity of the non-pneumatic bandage. pneumatic. By wire clamping insert is meant a three-dimensional element having two dimensions, defining its section, much smaller than a third dimension defining its length, this element being positioned inside the closed annular cavity of the non-pneumatic tire. Specifically, this wire clamping insert, having a length at least equal to the perimeter of the radially inner circumference of the closed toric cavity, is applied over the entire radially inner circumference of said closed toric cavity.

The clamping insert comprises clamping means applying to the clamping insert a prestressing force ensuring clamping by crushing of the radially inner portion of the non-pneumatic tire on the rim. The two ends of the clamping insert are interconnected by clamping means which ensure the tensioning of the clamping insert. The clamping insert thus subjected to a prestressing force will therefore exert a compressive force on the radially inner portion of the non-pneumatic tire, which will cause it to crush and therefore clamp on the j ante.

According to a first essential characteristic of the invention, the non-pneumatic tire comprises at least one through circumferential discontinuity, having two faces facing one another at least partly in contact with each other and having an average plane. intersecting the circumferential direction, preferably meridian. In other words, the hollow ring body constituting the non-pneumatic tire is not continuous, as for a conventional tire. This circumferential discontinuity results from the choice of manufacture of the non-pneumatic tire by winding at least one hollow O-ring element on the rim and corresponds to the junction of the two end faces of a hollow O-body element. Most often, there is a single circumferential discontinuity, but several discontinuities are conceivable, for example, assuming a manufacture of the non-pneumatic tire by a circumferential assembly of two adjacent adjacent two-ring hollow body members. Such a circumferential discontinuity is possible because there is no risk of loss of pressure given the fact that, by definition, the non-pneumatic tire operates without inflation gas. According to a second essential characteristic of the invention, the radially inner portion of the non-pneumatic tire comprises two deformable beads geometrically adapting to the rim under the action of crushing clamping. Under the action of clamping by crushing, the deformability of the beads will allow the radially inner portion of the non-pneumatic tire to adapt to rims whose axial width is within a certain range, by adapting the prestressing force of to obtain a greater or lesser deformation of the radially inner portion. By varying the clamping force and thus the deformation of the radially inner portion, the non-pneumatic tire can be mounted on rims of different axial widths. Typically the different axial widths are similar and differ from each other by a value at most equal to 20%. This feature ensures flexibility of mounting a non-pneumatic tire of given section on rims of different widths, but neighboring.

According to a third essential characteristic of the invention, the clamping insert passes successively, radially inwards, the radially inner portion of the non-pneumatic tire and a lunge hole, so that the clamping means are positioned. radially inside the rim. Thus the clamping is easily achievable radially inside the rim, in the open air. This feature ensures accessibility to the clamping means and allows easy mounting of the non-pneumatic tire on the rim.

Preferably the non-pneumatic tire comprises a single circumferential discontinuity. This preferred embodiment corresponds to a non-pneumatic tire obtained by circumferential winding, on the rim, of a single hollow body member whose end faces are butted. This is a method of manufacturing advantageously simple.

[0028] Advantageously, the non-pneumatic tire comprises a closed toric cavity having a volume at least equal to 30% of the total volume of the non-pneumatic tire. The hollow portion of the non-pneumatic tire is thus large enough to contain, for example, at least one filling material for adjusting the radial stiffness of the non-pneumatic tire according to its expected use. The non-pneumatic tire is most often constituted by at least one elastomeric material. Elastomeric materials, based on natural or synthetic elastomer, are the usual materials of the tire field.

The non-pneumatic tire consists of a single elastomeric material. The use of a single material makes it possible to simplify the manufacture of the non-pneumatic tire and to minimize its cost price.

According to a first method of mounting the non-pneumatic tire on its rim, the clamping insert passes through the radially inner portion of the non-pneumatic tire at the level of the circumferential discontinuity. In other words, the ends of the clamping insert simply leave the closed toric cavity at the level of circumferential discontinuity and then pass through a rim hole, positioned circumferentially in line with this circumferential discontinuity. This first mounting mode is the simplest because the ends of the clamping insert pass through pre-existing openings: circumferential discontinuity and rim hole. According to a second method of mounting the non-pneumatic tire on its rim, the clamping insert passes through the radially inner portion of the non-pneumatic tire outside the circumferential discontinuity. In other words, the ends of the clamping insert leave the closed toric cavity by a hole made for this purpose in the radially inner portion of the non-pneumatic tire, then pass through a rim hole, positioned circumferentially to the Plumb with this specific hole. This second mounting method advantageously makes it possible to limit the crushing of the end faces of the hollow toroidal body between them.

The clamping insert is advantageously constituted by a polymeric material preferably a plastic material, or a metal or a composite material.

Advantageously, the clamping insert has a meridian section at most equal to 50% of the meridian surface of the cavity. This implies that its size is limited to the radially inner portion and that it acts only on the clamping without contributing to the radial rigidity of the non-pneumatic tire. Therefore, the clamping insert is not a filler material and does not contribute to the load bearing by the non-pneumatic tire. Preferably, the clamping insert is a ribbon. In this case, the section of the clamping insert is substantially rectangular and the largest dimension of the section, applied against the radially inner portion of the cavity, allows to have a distributed compressive force and not punctual, which improves tightening on the rim. The radially inner portion of the clamping insert, applied against the radially inner portion of the cavity, may have a rounded shape to accommodate the shape of the hollow toric cavity at that contact.

The clamping means of the clamping insert apply to the non-pneumatic tire reversible clamping or irreversible clamping. A reversible clamping implies a possibility of disassembly of the non-pneumatic tire. An irreversible tightening implies a definitive assembly of the non-pneumatic tire on its rim.

According to a first clamping mode, the clamping insert comprises two ends each having a tooth face and a smooth face, and the clamping means are constituted by the two ends of the clamping insert, in contact with each other. by their respective smooth faces, and by a locking element, comprising teeth meshing with the respective toothed faces of the two ends. In this first clamping mode, the respective toothed faces of the two ends are not facing one another but facing at least one tooth of a locking element. Thus, each toothed face of each end meshes with at least one tooth of the locking element, as in a clip-type clamping. This first clamping mode is almost irreversible.

According to a second clamping mode, the clamping insert comprises two ends each having a circular face and a flat face and the clamping means are constituted by the two ends of the clamping insert, in contact with each other by their respective planar faces, and by a locking element of the self-locking nut type cooperating with the respective circular faces of the two ends. The clamping insert has a half-ring section comprising a flat face and a circular face, so that the two ends of the clamping insert, in contact with each other by their respective flat faces, constitute, with their faces respective circular elements, a circular section element. Such a clamping insert is called a half-ring clamping insert. In this second clamping mode, there are no faces toothed ends cooperating with the teeth of a locking element, and therefore no meshing between the end faces and the locking element. The clamping, in this embodiment, is achieved by a self-locking nut-type locking element generally self-gluing. In other words the nut creates a self-gluing on the circular faces of the ends of the clamping insert. This second clamping mode can be reversible.

According to an advantageous embodiment, the non-pneumatic tire comprises a filling element made of polymeric material, positioned inside its toric cavity radially outside the clamping insert, and occupying at least 50% of the toric cavity. Such a filling member allows adjustment of the radial stiffness of the non-pneumatic tire depending on its use.

The invention also relates to a method of manufacturing a mounted assembly according to any one of the previously described embodiments.

Such a manufacturing method comprises:

a first step of cutting a hollow body element intended to constitute the hollow toroidal body of the non-pneumatic tire, comprising at least one polymeric material and having a length substantially equal to the circumference of the rim, a second step of introducing a clamping insert into a closed cavity of the hollow body member,

a third circumferential winding step of the hollow body element, provided with the clamping insert, on the rim, and abutting of the two end faces of the hollow body element, so as to constitute the non-pneumatic tire, the abutting zone constituting a circumferential discontinuity through the non-pneumatic tire, -a fourth step of tightening the clamping insert by means of clamping means, the clamping insert passing successively, radially towards the inside, a radially inner portion of the non-pneumatic tire and a rim hole, in order to apply to the clamping insert a prestressing force ensuring a crushing clamping of the radially inner portion of the hollow ring body on the rim, so that the clamping means are positioned radially inside the rim. A first step is to cut a hollow body member, intended to form the hollow ring body of the non-pneumatic tire, said hollow body comprising at least one polymeric material. This hollow body is conditioned, for example, in the form of a long winding on a cylindrical shape and can be cut into hollow body elements having a given length. In the invention, a length of hollow body substantially equal to the circumference of the rim is thus cut. This "on demand" cutting principle guarantees flexibility with respect to the rim diameter for the constitution of a mounted assembly of which the non-pneumatic tire has a given section.

After cutting the hollow body member to the desired length, a second step is to introduce a clamping insert, generally of filial type, in a closed cavity of the hollow body member, usually in the unique closed cavity of the hollow body element. The length of the clamping insert must be greater than that of the hollow body member so that its ends can extend out of the hollow body member and, in the following steps, so that they can collaborate with an element of the hollow body member. locking and thus allow the clamping of the non-pneumatic tire on the rim. According to the embodiment chosen, the ends of the clamping insert exit through the ends of the hollow body member or through a hole provided for this purpose in the portion of the hollow body member intended to come into contact with the the rim.

A third step is to circumferentially wind the hollow body member, provided with the clamping insert, on the rim, and to abut the two end faces of the hollow body element, so as to constitute the non-pneumatic tire, the butting area constituting a circumferential discontinuity through the non-pneumatic tire.

A fourth and last step is to tighten the clamping insert using clamping means. The clamping insert passes successively, radially inwardly, a radially inner portion of the non-pneumatic tire and a rim hole, at or outside a circumferential discontinuity. The ends of the clamping insert are positioned radially inside the rim and then collaborate with a locking element, in order to apply to the clamping insert a prestressing force ensuring clamping by crushing the portion radially. Inside the hollow ring body on the rim. As seen previously, the ends of the insert of clamping can then collaborate with the locking element, by a clamp-type connection or by a self-locking nut type connection.

The characteristics and other advantages of the invention will be better understood using the schematic figures and not shown in scale, in the appendix.

FIG. 1 is a cross-sectional and perspective view of an assembly mounted according to the invention; FIG. 2A shows a meridian section of a non-pneumatic tire not mounted on its rim, FIG. 2B shows a meridian section of an assembly assembled according to FIG. the invention, comprising a non-pneumatic tire, a clamping insert and a rim,

FIG. 2C: meridian section of an assembly mounted according to a particular embodiment of the invention, comprising a non-pneumatic tire, a filling element, a clamping insert and a rim,

FIG. 3: Equatorial section of an assembly mounted according to a first method of mounting the non-pneumatic tire on its rim, with a clamping insert passing through a circumferential discontinuity of the non-pneumatic tire,

FIG. 4: Equatorial section of an assembly mounted according to a second method of mounting the non-pneumatic tire on its rim, with a clamping insert passing through a circumferential discontinuity of the non-pneumatic tire,

FIGS. 5A and 5B: cross-sectional and top views of a first clamp-type clamping mode,

6 A and 6 B: sectional and top views of a second self-locking nut type tightening method.

Figure 1 shows a sectional view in perspective of a mounted assembly 1 for a two-wheeled vehicle, comprising a non-pneumatic tire 2 mounted on a rim 3. The non-pneumatic tire 2 is constituted by a hollow toroidal body comprising at least one polymeric material and comprising a radially outer portion 21 intended to come at least partly in contact with a ground, a radially inner portion 22 at least partly resting on the rim 3 and a closed toric cavity 4. The rim 3 comprises two rim flanges 31 interconnected by a rim bottom 32 pierced by at least one rim hole 33 (not shown). The mounted assembly 1 comprises a filamentary clamping insert 5 applied over the entire radially inner circumference of the cavity 4. The clamping insert 5 comprises clamping means 6 applying to the clamping insert 5 a preloading force ensuring a crushing clamping of the radially inner portion 22 of the non-pneumatic tire 2 on the rim 3. According to a first essential characteristic of the invention, the non-pneumatic tire 2 comprises a circumferential discontinuity 7 through, having two faces (71, 72) (not shown) facing one another at least partly in contact with each other. According to a second essential characteristic of the invention, the radially inner portion 22 of the non-pneumatic tire 2 comprises two deformable beads 23 geometrically adapting to the rim 3 under the action of crushing. According to a third essential characteristic of the invention, the clamping insert 5 passes successively, radially inwards, the radially inner portion 22 of the non-pneumatic tire 2 and a rim hole 33 (not shown), so that the clamping means 6 are positioned radially inside the rim 3.

Figure 2A is a meridian section of a non-pneumatic tire 2 in the free state, that is to say not mounted on a rim. The non-pneumatic tire 2 is constituted by a hollow toroidal body comprising a radially outer portion 21 intended to come at least partly in contact with a ground, a radially inner portion 22 comprising two beads 23 intended to bear on a rim, and a closed cavity 4. [0049] FIG. 2B is a meridian section of a mounted assembly 1 according to the invention, comprising a non-pneumatic tire 2, a clamping insert 5 and a rim 3. The non-pneumatic tire 2, constituted by a hollow toroid body, comprises a radially outer portion 21 intended to come into contact at least partly with a ground, a radially inner portion 22 comprising two beads 23 and a closed toric cavity 4. The clamping insert 5 is positioned radially in contact with a radially inner portion of the closed toric cavity 4. The rim 3 comprises two rim flanges 31 interconnected by a rim bottom 32. Under the action of the tightening by the clamping insert 5, the two deformable beads 23 of the radially inner portion 22 of the non-pneumatic tire 2 adapt geometrically to the rim 3. Figure 2C is a meridian section of a mounted assembly 1 according to a particular embodiment of the invention, comprising a non-pneumatic tire 2, a filling element 8, a clamping insert 5 and a rim 3. The FIG. 2C is identical to Figure 2B to the presence of a filling element 8 near. This filling element 8, which is most often made of polymeric material, positioned inside the toroidal cavity closed radially outside the clamping insert, occupies substantially all of the closed toric cavity. Such a filling element makes it possible to adjust the radial stiffness of the non-pneumatic tire according to its use, whereas the clamping insert has a space requirement which is limited to the radially inner portion and acts only on the clamping without contributing to the radial rigidity of the non-pneumatic tire.

Figure 3 is an equatorial section of a mounted assembly 1 according to a first method of mounting the non-pneumatic tire 2 on its rim 3, with a clamping insert 5 passing through a circumferential discontinuity 7 of the non-pneumatic tire. 2. An equatorial section is a section made in the equatorial plane YZ passing through the middle of the running surface of the non-pneumatic tire 2. According to this first method of mounting the non-pneumatic tire on its rim, the clamping stud 5 passes through the radially inner portion 22 of the non-pneumatic tire 2 at the circumferential discontinuity 7 through, having two faces (71, 72) facing one another in contact with each other. In other words, the ends (51, 52) of the clamping insert 5 simply leave the closed toric cavity 4 at the level of circumferential discontinuity 7, then pass through a rim hole 33, positioned circumferentially in line with the this circumferential discontinuity. This first mounting mode is the simplest because the ends (51, 52) of the clamping insert 5 pass through pre-existing openings: circumferential discontinuity 7 and rim hole 33.

FIG. 4 is an equatorial section of a mounted assembly 1 according to a second method of mounting the non-pneumatic tire 2 on its rim 3, with a clamping insert 5 passing outside a circumferential discontinuity 7 of the non-pneumatic tire. 2. The ends (51, 52) of the clamping insert 5 protrude from the closed toric cavity 4 by a hole provided for this purpose in the radially inner portion 22 of the non-pneumatic tire 2, then pass through a rim hole. 33 positioned circumferentially in line with this specific hole. In the case shown, the exit hole of the ends (51, 52) of the clamping insert 5 is diametrically opposed to the circumferential discontinuity 7. This second mounting mode advantageously makes it possible to limit the crushing of the end faces ( 71, 72) of the toroidal body hollow between them.

Figures 5A and 5B are respectively sectional views and top of a first clamp type clamp type. According to this first clamping method, the clamping insert 5 comprises two ends (51, 52) each having a toothed face (51A, 52A) and a smooth face (51B, 52B), and the clamping means 6 consist of at both ends (51, 52) of the clamping insert 5, in contact with each other by their respective smooth faces (51B, 52B), and by a locking element 53, comprising teeth meshing with the toothed faces (51 A, 52A) of both ends (51, 52). The respective toothed faces (51 A, 52A) of the two ends (51, 52) are not facing one another but facing at least one tooth of a locking element 53. toothed (51A, 52A) of each end (51, 52) meshes with at least one tooth of the locking element 53, as in a clip-type clamping. This first clamping mode is almost irreversible.

Figures 6A and 6B are respectively sectional views and top of a second type of clamping type self-locking nut. According to this second clamping mode, the clamping insert 5, having a half-ring section, comprises two ends (51, 52) each having a circular face (51 A, 52A) and a flat face (51B, 52B) and the clamping means 6 are constituted by the two ends (51, 52) of the clamping insert 5, in contact with each other by their respective flat faces (51B, 52B), and by a locking element 53 of the nut type self-locking cooperating with the respective circular faces (51 A, 52A) of the two ends (51, 52). In this second clamping mode, there is not a priori toothed faces and therefore no meshing between the end faces (51, 52) and the locking element 53. The clamping is carried out by an element locking. This second clamping mode can be reversible. The invention has been more particularly studied for a bicycle-mounted assembly comprising a non-pneumatic tire mounted on a rim diameter 650 mm - 700 mm and width about 20 mm.

The invention may also extend:

a non-pneumatic tire constituted by a circumferential juxtaposition of a plurality of hollow toric body elements,

a non-pneumatic tire whose faces of the circumferential discontinuity are bonded together, for example by cold vulcanization,

other clamping inserts, for example a single cable, a cable positioned in a sheath.

Claims

1. Mounted assembly (1) for a two-wheeled vehicle, comprising a non-pneumatic tire (2) mounted on a rim (3):

the non-pneumatic tire (2) being constituted by a hollow toric body comprising at least one polymeric material and comprising a radially outer portion (21) intended to come into contact at least partly with a ground, a radially inner portion (22); at least partly supported on the rim (3) and a closed toric cavity (4),

the rim (3) comprising two rim flanges (31) interconnected by a rim bottom (32) pierced by at least one rim hole (33),

the mounted assembly (1) comprising a wire clamping insert (5) applied over the entire radially inner circumference of the closed toric cavity (4),

-Tightening clamp (5) comprising clamping means (6) applying to the clamping pin (5) a prestressing force ensuring a crushing clamping of the radially inner portion (22) of the non-pneumatic tire (2) on the rim (3),

characterized in that the non-pneumatic tire (2) comprises at least one circumferential discontinuity (7) having two faces (71, 72) facing each other at least partly in contact with each other, that the radially inner portion (22) of the non-pneumatic tire (2) comprises two deformable beads (23) geometrically adapting to the rim (3) under the action of the crushing clamping and in that the clamping pin (5) crosses successively, radially inwardly, the radially inner portion (22) of the non-pneumatic tire (2) and a rim hole (33), so that the clamping means (6) are positioned radially inside. of the rim (3).

A mounted assembly (1) for a two-wheeled vehicle according to claim 1 wherein the non-pneumatic tire (2) comprises a single circumferential discontinuity (7).

Mounted assembly (1) for a two-wheeled vehicle according to one of Claims 1 or 2, in which the non-pneumatic tire (2) comprises a closed toric cavity (4) having a volume at least equal to 30% of the total volume. non-pneumatic tire (2) ·

4. mounted assembly (1) for two-wheeled vehicle according to any one of claims 1 to 3 wherein the non-pneumatic tire (2) is constituted by at least one elastomeric material.

A mounted assembly (1) for a two-wheeled vehicle according to any one of claims 1 to 4 wherein the non-pneumatic tire (2) is made of a single elastomeric material.

6. mounted assembly (1) for a two-wheeled vehicle according to any one of claims 1 to 5 wherein the clamping insert (5) through the radially inner portion (22) of the non-pneumatic tire (2) at the level of the circumferential discontinuity (7).

7. mounted assembly (1) for a two-wheeled vehicle according to any one of claims 1 to 5 wherein the clamping insert (5) through the radially inner portion (22) of the non-pneumatic tire (2) outside circumferential discontinuity (7).

8. mounted assembly (1) for two-wheeled vehicle according to any one of claims 1 to 7 wherein the clamping insert (5) is constituted by a polymeric material preferably a plastic material.

9. mounted assembly (1) for two-wheeled vehicle according to any one of claims 1 to 8 wherein the clamping insert (5) has a meridian section at most equal to 50% of the meridian surface of the cavity ( 4).

10. Mounted assembly (1) for two-wheeled vehicle according to any one of claims 1 to 9 wherein the clamping insert (5) is a ribbon.

11. Mounted assembly (1) for a two-wheeled vehicle according to any one of claims 1 to 10 wherein the clamping insert (5) comprises two ends (51, 52) each having a toothed face (51 A, 52A ) and a smooth face (51B, 52B) and in that the clamping means (6) are constituted by the two ends (51, 52) of the clamping insert (5), in contact with each other by their smooth faces. (51B, 52B), and by a locking member (53) comprising teeth meshing with the respective toothed faces (51A, 52A) of the two ends (51, 52).

12. Mounted assembly (1) for a two-wheeled vehicle according to any one of claims 1 to 10 wherein the clamping insert (5) comprises two ends (51, 52) each having a circular face (51 A, 52A ) and a flat face (51B, 52B) and in that the clamping means (6) are constituted by the two ends (51, 52) of the clamping insert (5), in contact with each other by their flat faces. respective ones (51B, 52B), and by a locking element (53) of self-locking nut type cooperating with the respective circular faces (51A, 52A) of the two ends (51, 52).

13. A mounted assembly (1) for a two-wheeled vehicle according to any one of claims 1 to 12, wherein the non-pneumatic tire (2) comprises a filling element (8) made of polymeric material, positioned inside the tire. its toric cavity (4) radially outside the clamping insert (5), and occupying at least 50% of the toric cavity (4).

14. A method of manufacturing a mounted assembly (1) according to any one of claims 1 to 13 comprising:

a first step of cutting a hollow body element, intended to constitute the hollow ring body of the non-pneumatic tire (2), comprising at least one polymeric material and having a length substantially equal to the circumference of the rim (3) a second step of introducing a clamping insert (5) into a closed cavity (4) of the hollow body element,

a third step of circumferential winding of the hollow body element, provided with the clamping insert (5), on the rim (3), and abutment of the two end faces of the hollow body element; , so as to constitute the non-pneumatic tire (2), the abutting zone constituting a circumferential discontinuity through (7) of the non-pneumatic tire (2),

a fourth step of clamping the clamping insert (5) by means of clamping means (6), the clamping insert (5) traversing successively, radially inwardly, a radially inner portion (22); ) of the non-pneumatic tire (2) and a rim hole (33), in order to apply to the clamping insert (6) a prestressing force ensuring a crushing clamping of the radially inner portion (22) of the toric body hollow (2) on the rim (3), so that the clamping means (6) are positioned radially inside the rim (3).