WO2007012545A1 - Ensemble roue et pneumatique avec des sieges de diametres inegaux dont le pneumatique comporte des flancs de largeur superieure a la jante. - Google Patents
Ensemble roue et pneumatique avec des sieges de diametres inegaux dont le pneumatique comporte des flancs de largeur superieure a la jante. Download PDFInfo
- Publication number
- WO2007012545A1 WO2007012545A1 PCT/EP2006/063819 EP2006063819W WO2007012545A1 WO 2007012545 A1 WO2007012545 A1 WO 2007012545A1 EP 2006063819 W EP2006063819 W EP 2006063819W WO 2007012545 A1 WO2007012545 A1 WO 2007012545A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- rim
- seat
- width
- flanks
- bead
- 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.)
- Ceased
Links
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
- B60C3/00—Tyres characterised by the transverse section
- B60C3/04—Tyres characterised by the transverse section characterised by the relative dimensions of the section, e.g. low profile
-
- 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
- B60C13/00—Tyre sidewalls; Protecting, decorating, marking, or the like, thereof
- B60C13/003—Tyre sidewalls; Protecting, decorating, marking, or the like, thereof characterised by sidewall curvature
-
- 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
- B60C15/024—Bead contour, e.g. lips, grooves, or ribs
- B60C15/0247—Bead contour, e.g. lips, grooves, or ribs with reverse bead seat inclination, i.e. the axially inner diameter of the bead seat is bigger than the axially outer diameter thereof
-
- 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
- B60C17/00—Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor
- B60C17/04—Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor utilising additional non-inflatable supports which become load-supporting in emergency
- B60C17/06—Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor utilising additional non-inflatable supports which become load-supporting in emergency resilient
-
- 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
- B60C19/00—Tyre parts or constructions not otherwise provided for
- B60C19/001—Tyres requiring an asymmetric or a special mounting
Definitions
- the invention relates to a vehicle assembly comprising a wheel and a tire with seats of unequal diameters.
- the application WO 01/08905 discloses a vehicle wheel with seats of unequal diameters and an assembly consisting of such a wheel and a support support.
- the vehicle wheel presented by this document, of revolution, is intended for mounting a tire and a tread support support and comprises a disk and a rim.
- the rim is such that it comprises:
- a first and a second seat for receiving and maintaining a first and second tire beads, each seat having a substantially frustoconical bottom locally confused with a cone of revolution coaxial with the rim and open towards the other seat, a safety boss extending the bottom of the seat towards the other seat, and an outer rim extending the bottom of the seat on the opposite side to the other seat, and the maximum diameter of the first seat being less than the maximum diameter of the second seat; and
- the first seat towards the second seat a first circumferential groove, a support bearing diameter substantially equal to the maximum diameter of the first seat and a second circumferential groove.
- This wheel is such that the disc is connected to the rim of the side of the first seat.
- the wheel and the wheel / support assembly presented in this document allow a flat run in excellent conditions including the risk of loosening tire beads very reduced. Furthermore, this type of assembly has a width less than the level of the sidewalls at the rim outer edge. The rim is therefore likely to suffer shocks or external aggressions, such as sidewalk shocks. To protect the rims, a protective cord, or rim protector, is typically used. This means of protection is certainly effective, but it is also expensive in terms of weight and manufacturing time. This type of assembly also has a sensitivity to shocks, especially on the seat of larger diameter of the wheel located on the inside of the wheel.
- the invention provides an assembly comprising:
- a vehicle wheel, of revolution comprising a disk and a rim, said rim comprising a first and a second seat intended to receive and maintain a first and a second tire bead, each seat having a substantially frustoconical bottom coincide locally with a cone of revolution coaxial with the rim and open towards the other seat, and an outer rim extending the bottom of said seat on the opposite side to the other seat and having an outer portion, said rim defining, at a axial line passing through the points furthest away from the outer portions, a width Lj;
- a tire for a vehicle wheel comprising:
- flanks spaced axially from one another, and defining, at an axial straight line passing through the points farthest from said flanks, a width Lf, said flanks each having a level axial straight line passing through the points farthest from said sidewalls, a width less than the width of said sidewalls measured at a point substantially adjacent to the beads, said sidewalls being joined at their radially outer portions by a crown area whose width is smaller than said width Lf and said crown region being provided on its radially outer portion with a circumferential tread;
- each bead arranged radially internally to each of the flanks, each bead having a seat and an outer flange for coming into contact with said rim; [0012] a reinforcing structure extending substantially radially from each of the beads, along the flanks, towards the crown zone;
- At least one of said beads comprising:
- a bead seat comprising a generator whose axially inner end is on a circle of diameter greater than the diameter of the circle on which the axially outer end is located;
- said assembly being arranged so that when said tire is mounted on said rim and inflated substantially at its nominal pressure of use and when said tire is substantially uncrushed (substantially without load), in that said width Lf is greater than said width Lj (Lf> Lj).
- the assembly is protected from shocks by the proheminent portion of the sidewalls.
- the tire of such an assembly does not include a sidewall insert (making it possible to withstand a large load in the event of a significant or total loss of pressure) and therefore has rather thin sidewalls, conferring good flexibility on the assembly.
- the maximum diameter of the first seat of the rim is less than the maximum diameter of the second seat of the rim.
- connection zone between the disk and the rim is connected to said rim on the side of said second seat.
- This inversion of the position of the two rim seats by arranging the seat of larger diameter or second seat on the outer side of the wheel, that is to say on the side connected to the disc allows to place the rim area of the rim. larger diameter in an area of very high rigidity so much less sensitive to shocks than the seat on the inside.
- This embodiment makes it possible to obtain a good compromise in terms of load capacity and rigidity.
- this mode allows, for a current dimension, a mass decrease of up to 1.2 kg.
- each seat comprises, on the side of the other seat, an adjacent circumferential groove, wherein said rim comprises disposed between said two grooves a bearing surface of diameter substantially equal to the maximum diameter of said first seat .
- the circumferential grooves adjacent to the seats have a groove mounting function. These grooves are adapted to allow crossing during assembly and / or disassembly of the tire on the seat rim by the corresponding bead of the tire. It should be noted that the groove adjacent to the second seat of larger diameter has a depth (H max ) adapted to allow the crossing of the second seat by the second bead of the tire only.
- the assembly preferably comprises a tread support support disposed around said bearing surface of the rim. This support allows rolling over a given distance during a reduced or zero pressure condition.
- the wheels according to the invention are adapted to be mounted using the method described for example in EP 1351832 B1.
- This assembly is carried out by axially threading the tire (and the support support if necessary) around the rim of the side of the first seat of smaller diameter until the second seat of the rim is crossed by the second bead of the tire.
- the installation is carried out with the help of rotating mounting rollers that push the bead (and / or support) in place.
- the depth (H max ) of the groove adjacent to the second seat is a function of the maximum diameter ( ⁇ s2m a ⁇ ) of second seat and the axial width L of the legde. Accordingly, depending on the geometry and the diameter of the second seat, the depth of the second circumferential groove may be equal to, lower or greater than that of the first circumferential groove.
- the rim may comprise between the two grooves a bearing surface for receiving a support support.
- the wheel according to the The invention has the advantage of having a bearing surface whose diameter can be decreased substantially, of the order of 20 mm compared to the assemblies currently defined by the ETRTO (Standards Manual 2004, Rims, R. 14). This increases the guard between the support and the tread and thus decreases the importance of the forces that can be transmitted to the vehicle in the event of a violent impact.
- the bearing surface of the rim comprises a circumferential rib intended to lock in position the support support, especially when the axial dimension of this support support occupies only an axial fraction of the zone of the rim between the two seats.
- the support comprises a support portion disposed around the bearing surface of the rim and a locking portion disposed radially outwardly relative to the second circumferential groove.
- the support is adapted to bear against the flank of the second circumferential groove.
- the assembly according to the invention is such that the bearing surface of the rim comprises a circumferential groove which cooperates with a plurality of wedges disposed circumferentially on the radially inner wall of the support support for locking in position the support on the support range.
- Figure 1 shows a partial meridian sectional view of a rim and tire assembly according to the invention, in superposition to a known type of assembly, of equivalent size, to allow the visualization of different dimensional profiles;
- FIG. 2 and 3 each show a partial meridian sectional view of a rim and tire assembly according to the invention.
- meridian or axial plane is meant any plane passing through the axis A of the wheel and the rim.
- Figure 1 is shown, seen in partial meridian or axial section, a support assembly 10, 20 rim and tire 1 according to the invention.
- the rim 20 forms with a disc 21 a wheel 2 monoblock.
- the disc can also be manufactured independently of the rim and joined thereafter.
- the rim 20 comprises a first seat 22 and a second seat 24 intended to serve as a bearing surface for the first 3 and second 5 beads of the tire 1.
- the first seat 22 comprises a frustoconical bottom confused locally with a cone of revolution coaxial with the rim and open towards the second seat 24, a safety boss 222 extending the bottom of the first seat 22 to the second seat 24, and a external flange 223 extending the bottom of the first seat opposite the second seat 24.
- the maximum diameter of the first seat 22 is ⁇ simax- This diameter corresponds to the maximum diameter of the safety boss 222.
- the second seat 24 comprises a frustoconical bottom confused locally with a cone of revolution coaxial with the rim and open towards the first seat 22, a safety boss 242 extending the bottom of the second seat 24 to the first seat 22 and a flange 243 extending the bottom of the second seat on the opposite side to the first seat 22.
- the maximum diameter of the second seat 24 is ⁇ s2ma ⁇ - This diameter corresponds to the maximum diameter of the safety boss 242.
- a width Lj of the rim is defined by means of an axial straight line passing through the most spaced points of the opposite outer portions 223 and 243. These points being the outermost points of the rim is the most exposed to shocks and external aggression.
- the maximum diameter of the second seat is greater than that of the first seat.
- the order of magnitude of the difference between the maximum diameters ⁇ s2ma ⁇ - ⁇ simax is of the order of 20 mm.
- the gap between the minimum radii of the two seats is therefore of the order of 10 mm.
- the second circumferential groove 30 serves as a mounting groove for the second seat 24.
- the groove 30 includes a flank 301 adjacent to the safety boss 242.
- the outer diameter of the bearing surface 28 substantially corresponds to the maximum diameter of the first seat 22 to allow threading the support 10 on this bearing surface 28 by crossing the first seat 22.
- the tire 1 comprises two beads 3 and 5 intended to bear on the seats 22 and 24 of the rim 20, two flanks 7 and a tread 9.
- Each bead comprises annular reinforcements oriented substantially circumferentially and substantially inextensible .
- These reinforcements, such as rods 4 and 6, are intended to ensure in service the maintenance of the beads on the rim seats.
- the tire comprises a carcass-type reinforcement structure, provided with reinforcements advantageously configured in a substantially radial arrangement. This structure can be arranged continuously from one bead to the other, through the sides and the top, or it can comprise two or more parts, arranged for example along the flanks, without covering the entire Mountain peak.
- Each bead includes a seat and an outer rim intended to come into contact with a suitable rim: to promote rolling in degraded mode, the bead seat comprises a generator whose axially inner end is on a circle of diameter greater than the diameter the circle on which is the axially outer end.
- Each bead further comprises a substantially circumferential anchoring zone.
- the anchoring zone comprises a rod against which the end portion of the reinforcing structure is turned over. The rod is intended firstly to provide an anchoring of the reinforcing structure and secondly the clamping of the tire when the latter is mounted on a suitable rim.
- the anchoring zone is made otherwise than by turning around a bead wire.
- the anchoring zone comprises an arrangement of circumferential threads disposed substantially adjacent to a portion of the reinforcing structure.
- Said anchoring zone comprises at least two stacks distributed on either side of the reinforcing structure, a bonding mixture (or anchoring) being disposed between the circumferential threads and the reinforcing structure.
- the space between the son and the reinforcing structure is occupied by a rubber bonding mixture. It is also possible to use several mixtures having different characteristics, delimiting several zones, the combinations of mixtures and the resulting arrangements being almost unlimited. According to various variants, mixtures are used Rubber binding according to a variety of modules: by way of non-limiting example, the modulus of elasticity can be between 10 and 20 MPa, or even higher values, such as 40 MPa or more.
- a battery may advantageously consist of a single wire, wound (substantially at zero degrees) in a spiral, preferably from the smallest diameter to the largest diameter.
- a battery may also consist of several concentric wires laid one inside the other.
- the two flanks 7 are spaced axially from one another, and define, with the aid of an axial straight line passing through the most spaced points of these flanks, a width Lf.
- said width Lf is greater than said width Lj of the rim (Lf> Lj).
- This protection allows at the same time to protect the entire rim.
- This type of configuration, with Lf> Lj, is advantageously obtained by reducing the width of the rim relative to a conventional configuration. For example, on a set of current size, the reduction in width relative to a conventional rim may be of the order of 20 mm.
- the width is reduced from 3 to 15% and sometimes even more.
- the zone of greater width corresponds to that of Lb, namely the width between the rim protectors
- the zone of greater width is located at Lf, the width between the flanks. It is therefore the sides that protect the wheel against shocks.
- a lightened bead 51 with a profile external substantially straight, that is to say without rim protector. The removal of the protection cord helps lighten the whole.
- the disc 21 is connected to the rim 20 on the side of the second rim seat 24, that is to say on the side of the seat larger diameter.
- the safety boss 242 of the seat 24 is the part of the rim of larger diameter. It is therefore the one that is the most mechanically stressed during sidewalk or pothole impacts. This area is thus adjacent to the connection between the disk 21 and the rim 20 and therefore has a high stiffness favorable to excellent mechanical impact resistance.
- the first rim seat is also less mechanically stressed relative to the wheels of the state of the art: this reduces the thickness of the rim in this area and thus reduce the total mass of the wheel. In the case of a comparison with diameter of the outer seat or second seat constant, one can obtain a weight gain of up to 20%.
- the assembly according to the invention may comprise a support 10.
- This essentially comprises: a substantially cylindrical top 12 intended to come into contact with the tread 9 of the tire 1 in the event of pressure loss, and leaving a guard relative thereto at the nominal pressure, - a substantially cylindrical sole 14 intended to fit around the rim 20, this sole comprises a plurality of wedges 141 arranged circumferentially, of substantially half-cylindrical section and intended to cooperate with the groove 281 to lock in position the support 10 on the bearing surface 28 of the rim 20, and - an annular body 16 connecting the sole 14 and the top 12, this body comprises a set of Y-shaped partitions substantially radially connecting the sole and the top and oriented substantially axially from one side to the other of the support.
- the sole 14 has circumferentially oriented reinforcements such steel son or high modulus textile reinforcements such as aramid. Their function is to oppose the centrifugal forces undergone by the support when running at high speed to allow the support to remain in abutment against the bearing surface without moving circumferentially. These reinforcements not shown in the figure are arranged axially on either side of the housing 40.
- This depth of the circumferential groove 30, whose function is also to allow the crossing of the seat 24 by the bead 5 of the tire 1 may be between 10 and 15 mm and preferably between 12 and 13 mm.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tires In General (AREA)
Abstract
Description
Claims
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008523290A JP2009502614A (ja) | 2005-07-28 | 2006-07-03 | タイヤがリムより幅広い側壁部を備えている異なるシート直径を有しているホイール/タイヤ組立体 |
| US11/989,473 US20090101262A1 (en) | 2005-07-28 | 2006-07-03 | Wheel and tire assembly with non-matching seat diameters whereof the tire comprises sidewalls wider than the rim |
| EP06777556A EP1912803A1 (fr) | 2005-07-28 | 2006-07-03 | Ensemble roue et pneumatique avec des sieges de diametres inegaux dont le pneumatique comporte des flancs de largeur superieure a la jante. |
| BRPI0613947A BRPI0613947A2 (pt) | 2005-07-28 | 2006-07-03 | conjunto, e, pneumático |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0508090A FR2889110B1 (fr) | 2005-07-28 | 2005-07-28 | Ensemble roue et pneumatique avec des sieges de diametres inegaux dont le pneumatique comporte des flancs de largeur superieure a la jante |
| FR0508090 | 2005-07-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2007012545A1 true WO2007012545A1 (fr) | 2007-02-01 |
Family
ID=36021731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2006/063819 Ceased WO2007012545A1 (fr) | 2005-07-28 | 2006-07-03 | Ensemble roue et pneumatique avec des sieges de diametres inegaux dont le pneumatique comporte des flancs de largeur superieure a la jante. |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20090101262A1 (fr) |
| EP (1) | EP1912803A1 (fr) |
| JP (1) | JP2009502614A (fr) |
| CN (1) | CN101228038A (fr) |
| BR (1) | BRPI0613947A2 (fr) |
| FR (1) | FR2889110B1 (fr) |
| WO (1) | WO2007012545A1 (fr) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3036064B1 (fr) * | 2015-05-12 | 2017-05-12 | Michelin & Cie | Adaptateur pour ensemble roulant et ensemble roulant le comprenant |
| WO2017188409A1 (fr) * | 2016-04-28 | 2017-11-02 | 株式会社ブリヂストン | Pneumatique radial à roulage à plat |
| FR3053634A3 (fr) * | 2016-07-08 | 2018-01-12 | Michelin & Cie | Anneau-enjoliveur pour rebord de jante de vehicule a siege flottant, et ensemble forme par un anneau-enjoliveur et un adapateur pour roue a siege flottant |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001008905A1 (fr) * | 1999-08-02 | 2001-02-08 | Societe De Technologie Michelin | Ensemble d'une jante et d'un appui de soutien |
| FR2809348A1 (fr) * | 2000-05-26 | 2001-11-30 | Michelin Soc Tech | Pneumatique comprenant un profile de renfort dans au moins un flanc et ensemble pneumatique/jante comprenant un tel pneumatique |
| US6418992B1 (en) * | 1992-11-12 | 2002-07-16 | Michelin & Cie | Radial tire with axially outer bead tip |
| US20020179216A1 (en) * | 1999-12-03 | 2002-12-05 | Pereira Pedro Costa | Multizone bead for a tire having extended mobility |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AR196280A1 (es) * | 1972-12-20 | 1973-12-10 | Pirelli | Neumatico para rueda de vehiculos |
| FR2800671A1 (fr) * | 1999-11-04 | 2001-05-11 | Michelin Soc Tech | Jante destinee a recevoir un anneau de soutien |
| WO2001089861A1 (fr) * | 2000-05-22 | 2001-11-29 | Societe De Technologie Michelin | Pneumatique comprenant un profile de renfort dans au moins un flanc, et ensemble monte pneumatique/jante |
-
2005
- 2005-07-28 FR FR0508090A patent/FR2889110B1/fr not_active Expired - Fee Related
-
2006
- 2006-07-03 BR BRPI0613947A patent/BRPI0613947A2/pt not_active IP Right Cessation
- 2006-07-03 JP JP2008523290A patent/JP2009502614A/ja active Pending
- 2006-07-03 EP EP06777556A patent/EP1912803A1/fr not_active Withdrawn
- 2006-07-03 WO PCT/EP2006/063819 patent/WO2007012545A1/fr not_active Ceased
- 2006-07-03 US US11/989,473 patent/US20090101262A1/en not_active Abandoned
- 2006-07-03 CN CNA2006800271577A patent/CN101228038A/zh active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6418992B1 (en) * | 1992-11-12 | 2002-07-16 | Michelin & Cie | Radial tire with axially outer bead tip |
| WO2001008905A1 (fr) * | 1999-08-02 | 2001-02-08 | Societe De Technologie Michelin | Ensemble d'une jante et d'un appui de soutien |
| US20020179216A1 (en) * | 1999-12-03 | 2002-12-05 | Pereira Pedro Costa | Multizone bead for a tire having extended mobility |
| FR2809348A1 (fr) * | 2000-05-26 | 2001-11-30 | Michelin Soc Tech | Pneumatique comprenant un profile de renfort dans au moins un flanc et ensemble pneumatique/jante comprenant un tel pneumatique |
Also Published As
| Publication number | Publication date |
|---|---|
| US20090101262A1 (en) | 2009-04-23 |
| JP2009502614A (ja) | 2009-01-29 |
| FR2889110B1 (fr) | 2009-10-09 |
| BRPI0613947A2 (pt) | 2016-11-22 |
| FR2889110A1 (fr) | 2007-02-02 |
| CN101228038A (zh) | 2008-07-23 |
| EP1912803A1 (fr) | 2008-04-23 |
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