WO2022145000A1 - Adaptateur pour ensemble roulant - Google Patents

Adaptateur pour ensemble roulant Download PDF

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Publication number
WO2022145000A1
WO2022145000A1 PCT/JP2020/049188 JP2020049188W WO2022145000A1 WO 2022145000 A1 WO2022145000 A1 WO 2022145000A1 JP 2020049188 W JP2020049188 W JP 2020049188W WO 2022145000 A1 WO2022145000 A1 WO 2022145000A1
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WO
WIPO (PCT)
Prior art keywords
reinforcement
adapter
ply
sub
wires
Prior art date
Application number
PCT/JP2020/049188
Other languages
English (en)
Inventor
Kenji Fukuda
Jacques Babaud
Yasufumi Nakashima
Original Assignee
Compagnie Generale Des Etablissements Michelin
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Compagnie Generale Des Etablissements Michelin filed Critical Compagnie Generale Des Etablissements Michelin
Priority to PCT/JP2020/049188 priority Critical patent/WO2022145000A1/fr
Publication of WO2022145000A1 publication Critical patent/WO2022145000A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C15/00—Tyre beads, e.g. ply turn-up or overlap
    • B60C15/02—Seating or securing beads on rims
    • B60C15/0209—Supplementary means for securing the bead
    • B60C15/0223—Supplementary means for securing the bead the bead being secured by clip-hook elements not forming part of the rim flange

Definitions

  • the present invention relates to a rim for a vehicle including a seat for receiving a tire bead is radially floating.
  • the invention relates in particular systems containing flexible adapter inserted between a tire bead and a rim.
  • a tire, a rim, an adapter, referred to in the present invention objects are usually described by a representation in a meridian plane, that is to say a plane containing a rotation axis (an axis of rotation) of the tire. All these products (a tire, a rim and an adapter) are objects having geometry of revolution relative to their rotation axis.
  • a tire currently used these days mainly comprises a tread intended to provide contact with ground, this tread generally being reinforced by a crown reinforcement which is positioned radially inward of the tread.
  • the crown reinforcement is able to give the crown the rigidities, in the three dimensions, which needs for the running of the tire.
  • the crown reinforcement also limits the radial expansion of a carcass reinforcement, generally made up of one or more plies of radial reinforcing elements.
  • a carcass reinforcement generally made up of one or more plies of radial reinforcing elements.
  • the carcass reinforcement When the tire is mounted so as to become functional, it contains an inflation gas, inflated to a nominal pressure.
  • the carcass reinforcement during the use of the tire within reasonable limits, deforms both statically and when running.
  • the carcass reinforcement is generally anchored in each bead to a reinforcing ring. The beads provide contact with the seat and flange of the rim on which the tire is mounted.
  • WO00/078565 discloses a rolling assembly having an elastic adapter inserted between a rim and beads of a tire.
  • This adapter is elastically deformable in the radial and axial directions.
  • Such an adapter makes it possible to separate that part of the rolling assembly that can be considered to actually act as a tire from that part of the rolling assembly that can be considered to act as a rim.
  • EP3083288 discloses an adapter for a rolling assembly having an axis of rotation and comprising a tire having two beads, a rim, the adapter providing the connection between one of the rib beads and the rim, the rim having two rim seats, the adapter having an axially internal end intended to be mounted on the seat of the rim and comprising an internal reinforcing element, an axially external end intended to be mounted on the seat of the rim and comprising an external reinforcing element, a body connecting the external end to the internal end in such a way as to form a single unit and comprising at least one main reinforcement providing the connection between the external reinforcement and the internal reinforcement, a substantially cylindrical adapter seat intended to accept one of the beads, an adapter bearing face substantially comprised in a plane perpendicular to the axis of rotation.
  • the adapter is characterized in that the reinforcement of the axially external end is entirely outside the bearing face, and in that the body comprises, facing the adapter seat, a seat annular reinforcement that has
  • a “radial direction/orientation” is a direction/orientation perpendicular to rotation axis of the tire. This direction/orientation corresponds to thickness orientation of the tread.
  • An “axial direction/orientation” is a direction/orientation parallel to rotation axis of the tire.
  • a “circumferential direction/orientation” is a direction/orientation which is tangential to any circle centered on rotation axis. This direction/orientation is perpendicular to both the axial direction/orientation and the radial direction/orientation.
  • An “inflation state” is a state in which a rolling assembly is inflated to its nominal pressure corresponding to a tire dimension in the rolling assembly as defined in tire standards such as ETRTO, JATMA or TRA.
  • a “substantially the same extension orientation” is understood as a difference of the extension orientation of cords/cables/wires between plies projected on a plane parallel to ground is within 5 degrees.
  • a “substantially parallel to axial orientation” is understood as a difference of the extension orientation of cords/cables/wires of the ply projected on a plane parallel to ground to axial orientation is within 5 degrees.
  • the present invention provides an adapter for a rolling assembly having a rotation axis and comprising a tire having two beads, a rim and the at least one adapter, the adapter providing the connection between one of the beads and the rim, the rim having two rim seats, the adapter having an axially inner end that is intended to be mounted on the rim seat and comprising an inner reinforcement, an axially outer end comprising an outer reinforcement, a body connecting the outer end to the inner end so as to form a single piece and comprising at least one main reinforcement providing a connection between the outer reinforcement and the inner reinforcement, the at least one main reinforcement consisting of a ply comprising a plurality of cords or a plurality of cables or a plurality of wires placed in parallel from one another, the body comprises at least one sub reinforcement placed radially outward or inward of the at least one main reinforcement, the at least one sub reinforcement consists of a ply comprising a plurality of cords or a plurality of cables or a plurality of wires
  • This arrangement provides improvement on interior noise performance in certain frequency range while maintaining ability to withstand curb impact and comfort performance.
  • the adapter providing the connection between one of the beads and the rim, the adapter can deform at least in radial and in axial directions, thus it is possible to improve comfort and ability to withstand curb impact.
  • the body comprises at least one sub reinforcement placed radially outward or inward of the at least one main reinforcement
  • the at least one sub reinforcement limits radial vibration of the adapter itself at around 250 - 400 Hz. Therefore it is possible to improve interior noise performance in certain frequency range.
  • the extension orientation of the plurality of cords or the plurality of cables or the plurality of wires of the ply in the at least one main reinforcement is substantially the same with the extension orientation of the plurality of cords or the plurality of cables or the plurality of wires of the ply in the at least one sub reinforcement, a shearing rigidity of the adapter can be minimized resulting in a shift of a tire and adapter vibration modes to lower frequencies. Therefore it is possible to improve interior noise performance in certain frequency range.
  • the extension orientation of the plurality of cords or the plurality of cables or the plurality of wires of the ply in the at least one main reinforcement is substantially the same with the extension orientation of the plurality of cords or the plurality of cables or the plurality of wires of the ply in the at least one sub reinforcement, a bending rigidity of the adapter can be increased by keeping a distance between the outer reinforcement and the inner reinforcement during usage. Therefore it is possible to improve interior noise performance in certain frequency range while maintaining ability to withstand curb impact and comfort performance.
  • the extension orientation of the plurality of cords or the plurality of cables or the plurality of wires of the ply in the at least one main reinforcement projected radially onto the plane parallel to ground is substantially parallel to axial orientation.
  • the body comprises two sub reinforcements placed both radially outward and inward of the at least one main reinforcement.
  • the sub reinforcement consists of the ply comprising a plurality of metal wires.
  • an axial width of the sub reinforcement at an inflated state is at least equal to 50% axial width of the body at the inflated state.
  • this axial width of the sub reinforcement is less than 50% axial width of the body, there is a risk that vibration limitation of the adapter with sub reinforcement becomes insufficient resulting thus insufficient improvement on interior noise performance.
  • this axial width of the sub reinforcement is at least equal to 50% axial width of the body, it is possible to improve interior noise performance at certain frequency range.
  • This axial width of the sub reinforcement is preferably at least equal to 70% axial width of the body, more preferably at least equal to 80% axial width of the body and still more preferably at least equal to 90% axial width of the body.
  • Fig. 1 is a schematic sectional view of a rolling assembly according to an embodiment of the present invention
  • Fig. 2 is a schematic sectional view of an adapter according to the embodiment of the present invention
  • Fig. 3 is a schematic top view of the adapter according to the embodiment of the present invention
  • a rolling assembly 2 according to a first embodiment of the present invention will be described referring to Figs 1, 2 and 3.
  • Fig. 1 is a schematic sectional view of a rolling assembly according to an embodiment of the present invention.
  • Fig. 2 is a schematic sectional view of an adapter according to the embodiment of the present invention.
  • Fig. 3 is a schematic top view of the adapter according to the embodiment of the present invention.
  • the rolling assembly 2 is a rolling assembly having a rotation axis XX’, and comprising a rim J having two rim seats 7 being axially outwardly extended, two adapters 1 and a tire P having two beads B, each the adapter 1 providing the connection between one of the bead B and the rim J.
  • the rolling assembly 2 is in an inflation state.
  • the adapter 1 comprising an axially inner end 10 that is adapted to be mounted on one of the rim seats 7, an axially outer end 9 that is adapted to receive one of the beads B and a body 11 connecting the axially inner end 10 and the axially outer end 9 as to form a single piece.
  • the adapter 1 having the axially inner end 10 comprising an inner reinforcement 16, the axially outer end 9 comprising an outer reinforcement 15, the body 11 comprising at least one main reinforcement 17 providing a connection between the outer reinforcement 15 and the inner reinforcement 16.
  • the body 11 comprises at least one sub reinforcement 19 placed radially outward or inward of the at least one main reinforcement 17.
  • An axial width of the sub reinforcement 19 at an inflated state is at least equal to 50% axial width of the body 11 at the inflated state.
  • the body 11 comprises one main reinforcement 17 and two sub reinforcements 19 placed both radially outward and inward of the main reinforcement 17, the axial width of each the sub reinforcement 19 is more than 100% axial width of the body 11 as to extending into the inner end 10 and/or the outer end 9.
  • the at least one main reinforcement 17 consisting of a ply comprising a plurality of cords or a plurality of cables or a plurality of wires 171 placed in parallel from one another
  • the at least one sub reinforcement 19 consists of a ply comprising a plurality of cords or a plurality of cables or a plurality of wires 191 placed in parallel from one another.
  • An extension orientation of the plurality of cords or the plurality of cables or the plurality of wires 171 of the ply in the at least one main reinforcement 17 projected radially onto a plane parallel to ground is substantially the same with an extension orientation of the plurality of cords or the plurality of cables or the plurality of wires 191 of the ply in the at least one sub reinforcement 19 projected radially onto the same plane.
  • the main reinforcement 17 consisting of the ply comprising a plurality of aramid cables
  • each the sub reinforcement 19 consisting of the ply comprising a plurality of metal (steel) wires
  • the extension orientation of the plurality of cords or the plurality of cables or the plurality of wires 171 of the ply in the at least one main reinforcement 17 projected radially onto the plane parallel to ground is substantially parallel to axial orientation.
  • the adapter 1 providing the connection between one of the beads B and the rim J, the adapter 1 can deform at least in radial and in axial directions, thus it is possible to improve comfort and ability to withstand curb impact.
  • the body 11 comprises at least one sub reinforcement 19 placed radially outward or inward of the at least one main reinforcement 17, the at least one sub reinforcement 19 limits radial vibration of the adapter 1 itself at around 250 - 400 Hz. Therefore it is possible to improve interior noise performance in certain frequency range.
  • the extension orientation of the plurality of cords or the plurality of cables or the plurality of wires 171 of the ply in the at least one main reinforcement 17 is substantially the same with the extension orientation of the plurality of cords or the plurality of cables or the plurality of wires 191 of the ply in the at least one sub reinforcement 19, a shearing rigidity of the adapter 1 can be minimized resulting in a shift of a tire and adapter vibration modes to lower frequencies. Therefore it is possible to improve interior noise performance in certain frequency range.
  • a bending rigidity of the adapter 1 can be increased by keeping a distance between the outer reinforcement 15 and the inner reinforcement 16 during usage. Therefore it is possible to improve interior noise performance in certain frequency range while maintaining ability to withstand curb impact and comfort performance.
  • the extension orientation of the plurality of cords or the plurality of cables or the plurality of wires 171 of the ply in the at least one main reinforcement 17 projected radially onto the plane parallel to ground is substantially parallel to axial orientation, it is further possible to improve interior noise performance in certain frequency range as the shearing rigidity of the adapter 1 can effectively be minimized resulting shift of the tire vibration mode lower.
  • the body 11 comprises two sub reinforcements 19 placed both radially outward and inward of the at least one main reinforcement 17, it is further possible to improve interior noise performance in certain frequency range while maintaining ability to withstand curb impact and comfort performance as the bending rigidity of the adapter 1 is efficiently increased for surely keeping a distance between the outer reinforcement 15 and the inner reinforcement 16 during usage.
  • the sub reinforcement 19 consists of the ply comprising a plurality of metal wires, it is further possible to improve interior noise performance in certain frequency range as the sub reinforcement 19 limits efficiently vibration of the adapter 1 itself at around 250 - 400 Hz.
  • the axial width of the sub reinforcement 19 at the inflated state is at least equal to 50% axial width of the body 11 at the inflated state, it is possible to improve interior noise performance at certain frequency range.
  • this axial width of the sub reinforcement 19 is less than 50% axial width of the body 11, there is a risk that vibration limitation of the adapter 1 with sub reinforcement 19 becomes insufficient resulting thus insufficient improvement on interior noise performance.
  • This axial width of the sub reinforcement 19 is preferably at least equal to 70% axial width of the body 11, more preferably at least equal to 80% axial width of the body 11 and still more preferably at least equal to 90% axial width of the body 11.
  • Example of the ply consisting the main reinforcement 17 and/or the sub reinforcement 19 is, for example, thermoplastic material as acrylonitrile butadiene styrene copolymer, cellulose acetate, polyamide, Kevlar (trademark), polycarbonate, poly-ether-ether-ketone, polyethylene terephthalate, polystyrene, thermoplastic polyurethane, thermoset material as epoxy, phenolic, polyester, ebonite, metal material as steel, brass, and composite material with reinforcements as carbon fiber, glass fiber, aramid fiber, PET, nylon, vegetal fiber in a form of cord, cable, short fiber, wire, woven fabric or nonwoven fabric, folded into or laminated by other material as elastomeric material such as rubber.
  • a structure of such cord, cable, short fiber, wire, woven fabric or nonwoven fabric may be monofilament, multifilament or multi-component filament.
  • the rim J is preferably made of a material selected from steel or alloys of aluminum and/or magnesium, composite materials based on carbon fiber, glass fiber, aramid fiber, plant fiber, the said fibers being contained within a matrix based on thermosetting or thermoplastic compounds, or from a complex composite comprising an elastomer and a complex based on resin and fibers selected from carbon fibers, glass fibers, aramid fibers, plant fibers or any combinations of these materials.
  • thermosetting compounds selected from epoxy resins, vinylester, unsaturated polyesters, ester cyanate, bismaleimide, acrylic resins, phenolic resins, polyurethanes and combinations thereof.
  • the matrix based on thermoplastic compounds is selected from polypropylene (PP), polyethylene (PE), polyamides (PA), semiaromatic polyamides, polyester (PET), polybutylene terephthalate (PBT), polyetheretherketone (PEEK), polyetherketoneketone (PEKK), polyethersulphone (PSU), polyetherimide (PEI), polyimide (P1), polyamidelmide (PAl), polyphenylenesulphide (PPS), polyoxymethylene (POM), polyphenylene oxide (PPO).
  • the adapter 1 may be made of elastomers such as rubbers that can be crosslinked by chemical vulcanization reactions by sulphur bridges, by carbon-carbon bonds created by the action of peroxides or of ionizing radiation, by other specific atom chains of the elastomer module, thermoplastic elastomers (TPEs) in which the elastically deformable part forms a network between rather non-deformable "hard” regions, the cohesion of which is the product of physical connections (crystallites or amorphous regions above their glass transition temperature), non-thermoplastic elastomers and thermoset resins.
  • elastomers such as rubbers that can be crosslinked by chemical vulcanization reactions by sulphur bridges, by carbon-carbon bonds created by the action of peroxides or of ionizing radiation, by other specific atom chains of the elastomer module, thermoplastic elastomers (TPEs) in which the elastically deformable part forms a network between rather non-de
  • the rolling assembly 2 may be provided with one single adapter 1, axially outside or inside only.
  • the cords/cables/wires comprised in the ply of the sub reinforcements 19 may be different from one ply to another ply.
  • the cords/cables/wires comprised in the ply of the sub reinforcement 19 may be the same as the cords/cables/wires comprised in the ply of the main reinforcement 17.
  • the body 11 may be provided with more than one main reinforcement 17.
  • the cords/cables/wires comprised in the ply of the main reinforcement 17 may be the same, or may be different from one ply to another ply.
  • the Example was a rolling assembly as described in the above embodiment; an adapter was provided with one main reinforcement consisting of a ply comprising a plurality of aramid cables extending in axial orientation, a body comprises two sub reinforcements placed both radially outward and inward of the main reinforcement, each the sub reinforcement consists of a ply comprising a plurality of metal (steel) wires extending in axial orientation.
  • the Reference was a rolling assembly without adapter.
  • the Comparative Example 1 was a rolling assembly similar to the Example but each the sub reinforcement consists of a ply comprising a plurality of aramid cables extending with 30 degrees angle relative to axial orientation.
  • the plurality of cables of radially outward sub reinforcement and the radially inward sub reinforcement extending in opposite orientation relative to axial orientation each other.
  • the Comparative Example 2 was a rolling assembly similar to the Comparative Example 1 but each the sub reinforcement consists of a ply comprising a plurality of metal (steel) wires.
  • Unused rolling assemblies were mounted onto all four wheels of a 2,500 cc rear-wheel drive vehicle. On a straight path weathered asphalt, the vehicle was driven at a constant speed of 100 kph. An interior noise was measured using a microphone positioned at a passenger’s ear close to window. An A-weighted sound pressure level between 0 and 500 Hz was calculated.
  • results are shown in table 1.
  • results are represented by difference in dB(A) against Reference, lower the value indicates better the performance.
  • comfort performance was evaluated subjectively via well-trained driver.
  • Example 1 shows improvement on interior noise performance in certain frequency range while maintaining ability to withstand curb impact and comfort performance, which cannot be achieved by treads disclosed in prior arts.

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

Abstract

La présente invention concerne un adaptateur (1) destiné à un ensemble roulant ayant une extrémité axialement interne (10) comprenant un renfort interne (16), une extrémité axialement externe (9) comprenant un renfort externe (15), un corps (11) reliant l'extrémité externe à l'extrémité interne de manière à former une seule pièce et comprenant au moins un renfort principal (17) assurant une liaison entre les renforts externe et interne, le renfort principal étant constitué d'un pli comprenant une pluralité de fils câblés ou câbles ou fils disposés en parallèle les uns des autres, le corps (11) comprenant au moins un sous-renfort (19) disposé radialement vers l'extérieur ou vers l'intérieur du ou des renforts principaux (17), le sous-renfort (19) étant constitué d'un pli comprenant une pluralité de fils câblés ou câbles ou fils disposés en parallèle les uns des autres, une orientation d'extension de la pluralité de fils câblés ou câbles ou fils du pli dans le renfort principal (17) étant sensiblement identique à une orientation d'extension de la pluralité de fils câblés ou câbles ou fils du pli dans le sous-renfort (19).
PCT/JP2020/049188 2020-12-28 2020-12-28 Adaptateur pour ensemble roulant WO2022145000A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2020/049188 WO2022145000A1 (fr) 2020-12-28 2020-12-28 Adaptateur pour ensemble roulant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2020/049188 WO2022145000A1 (fr) 2020-12-28 2020-12-28 Adaptateur pour ensemble roulant

Publications (1)

Publication Number Publication Date
WO2022145000A1 true WO2022145000A1 (fr) 2022-07-07

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PCT/JP2020/049188 WO2022145000A1 (fr) 2020-12-28 2020-12-28 Adaptateur pour ensemble roulant

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3026054A1 (fr) * 2014-09-24 2016-03-25 Michelin & Cie Ensemble roulant
EP3083288A1 (fr) 2013-12-19 2016-10-26 Compagnie Générale des Etablissements Michelin Adaptateur pour ensemble roulant et ensemble roulant le comprenant
US20190143761A1 (en) * 2016-05-02 2019-05-16 Compagnie Generale Des Etablissements Michelin Adapter for a wheeled assembly and a wheeled assembly comprising same
EP3484727B1 (fr) * 2016-07-15 2020-09-02 Compagnie Générale des Etablissements Michelin Adaptateur pour ensemble monte avec couche de reperage

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3083288A1 (fr) 2013-12-19 2016-10-26 Compagnie Générale des Etablissements Michelin Adaptateur pour ensemble roulant et ensemble roulant le comprenant
FR3026054A1 (fr) * 2014-09-24 2016-03-25 Michelin & Cie Ensemble roulant
US20190143761A1 (en) * 2016-05-02 2019-05-16 Compagnie Generale Des Etablissements Michelin Adapter for a wheeled assembly and a wheeled assembly comprising same
EP3484727B1 (fr) * 2016-07-15 2020-09-02 Compagnie Générale des Etablissements Michelin Adaptateur pour ensemble monte avec couche de reperage

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