CN1319053A - Runflat tyre having optimized carcass path - Google Patents
Runflat tyre having optimized carcass path Download PDFInfo
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- CN1319053A CN1319053A CN99811148A CN99811148A CN1319053A CN 1319053 A CN1319053 A CN 1319053A CN 99811148 A CN99811148 A CN 99811148A CN 99811148 A CN99811148 A CN 99811148A CN 1319053 A CN1319053 A CN 1319053A
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- Prior art keywords
- tire
- point
- bead
- cover
- cover tire
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- 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
- B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
- B60C9/02—Carcasses
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- 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
- B60C15/0009—Tyre beads, e.g. ply turn-up or overlap features of the carcass terminal portion
- B60C15/0018—Tyre beads, e.g. ply turn-up or overlap features of the carcass terminal portion not folded around the bead core, e.g. floating or down ply
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- 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
- B60C17/0009—Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor comprising sidewall rubber inserts, e.g. crescent shaped inserts
- B60C17/0018—Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor comprising sidewall rubber inserts, e.g. crescent shaped inserts two or more inserts in each sidewall portion
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- 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
Abstract
The tire of the invention has an optimized path of the outermost carcass designed to maximize the extent of tensile stress in the sidewall and bead portions of the tire. The invention further provides separate reinforcement structures in the bead portion for anchoring the carcass or carcasses in the bead and for retaining the bead on the mounting rim during deflated operation, and said anchloring reinforcement also facilitates the maintenance of the desirable carcass profile.
Description
Background of invention
The present invention relates to a kind of tire, particularly a kind of air-inflation tyre that can under the situation of gas leakage, continue its manoevreability.
At gas filed Runflat tire, multiple different Tyre structure has been proposed here, that this tire can be full of cruising under the state of gas but also can allow to realize under the state in a kind of gas leakage certain limited travelling.The structure of this tire normally by one or more around be arranged on that one or more bead metal filaments on each bead radially dig cover tire constituted.In order to reach the manoevreability of expection under the situation of travelling in gas leakage, also used side wall construction in many such tires, it all is to be reinforced and to thicken by inserting between the plies or outside additional elastomeric material layer outside between plies and the inner layer of tire embolus.The example of in Fig. 1, having represented a this tire.
Making one, to leak gas that the tire that travels can remain secured on this wheel rim also be no less important.The solution of many kinds was once proposed, comprising mechanical bead locking device is arranged, special rim contour or the bead wire bundle of elongating cross-sectional plane is arranged.On shown in Fig. 1 in a kind of situation, the bead wire bundle of this elongation has played simultaneously this cover tire is fixed on this bead with opposing and has resulted from the tensile force in the cover tire and bead remained on effect on this wheel rim in the gas leakage driving process.Coordination in design process between these two kinds of performances is very necessary.
Tire with cover tire of digging around the bead metal filament must have an interruption at the radially topmost boundary of digging part of its one or more cover tires.When this digs part when being arranged at axis outside of this tire transversal surface vertically, this tire dig the state that part is placed in a kind of compressing stress, make this bead partly produce distortion.This state of stress and above-mentioned interruption are coordinated the performance need of tire between inflation and gas leakage state, caused structure Design to be restricted.
The application people be the 5th, 263, No. 526 US Patent of Oare etc. and applies for that the people is that the 5th, 511, No. 599 US Patent of Willard have all related to the gas leakage traveling tire that has multiply tyre, wherein has at least one deck cover tire to dig around the bead metal filament.Oare etc. disclose a kind of tire that has two reinforced tyres, and they all are to dig around the metal filament of this bead, and the part of digging of at least one cover tire has radially extended to the equatorial circle place of tire, and this lower sidewall portion includes the consolidating layer of multilayer.In context, phrase " tire equator circle " has defined with respect to the radial position that axial boundary maximum width points or this outside tires surface is arranged.Willard discloses a kind of tire with three layers of tire line reinforced tyre, wherein the ground floor cover tire axially and the footpath upwards end at the inner boundary of this bead, second layer cover tire dig around bead and in the outside of lower wall vertically outside the 3rd plies overlap on.It is because the position in the axial direction, the outside of bead structure that two pieces of documents all do not have to eliminate at the compression effort of digging part.Conclusion is, the geom arrangement in the bead zone of product and mounting means must have can be adapted to the stretch durability of a compressing stress of on-cycle.Like this, which tire can be broken away from these restrictions in design, and then it just can better adapt to the overall process of inflation of tire and gas leakage form simultaneously.
Summary of the invention
Tire among the present invention has the outermost layer optimized carcass path of a uniqueness, and its design is that the tensile stress limit for the sidewall that can make tire and bead part reaches maximum.The present invention also provides one to be used for that single or multiple cover tires are fixed in the bead partial sum and to be used at the gas leakage driving process bead being remained on bead part on the wheel rim.And described cover tire anchor fitting has been simplified the maintenance to the appearance profile of described cover tire simultaneously.
Tire beads place involved in the present invention includes at least one axial outermost layer cover tire that is fixed in each side of tire, this bead has a base, it is used to be installed in the assembling wheel rim of tire design, each bead all radially extends upward by a sidewall sections, and wherein this sidewall sections and a tread portion join.
With respect to tire axial innermost layer surface and axially the midway location between the outermost surface the formed track definition of some reference wheel profile in the middle of,
One wheel rim R point R on described bead is defined as having one and is equivalent to half axial coordinate and of normal width and is equivalent to assemble half radial coordinates of wheel rim normal diameter,
One bead R point Z is defined within the tire outermost surface and a radial coordinates from wheel rim R point R outwards is offset on the horizontal point of crossing of a segment distance,
One tyre surface R point N is defined within on the outermost surface of tire, in the junction of tread of tyre and sidewall sections,
One sidewall R point P is defined within the outermost surface place of lower tire side wall, and between R point Z and N;
Wherein said at least one axial outermost layer cover tire corresponding to the radial position between described sidewall R point P and described tyre surface R point N, is arranged at the outside of described middle reference wheel profile vertically,
Wherein said at least one axial outermost layer cover tire and described middle reference wheel profile intersect at 1 Q, described some Q has a radial position between described R point Z and described R point P, and corresponding to be set to vertically with this cover tire of interior radial position at described some Q thereupon described in the middle of the inboard of reference wheel profile;
Wherein corresponding to each at described sidewall R point P with interior radial position, each axial coordinate of described at least one axial outermost layer cover tire all has a corresponding monodrome radial coordinates,
And described tire also includes one and is used for the first bead reinforcing member and that described at least one cover tire is fixed on the bead is used to assemble the second bead reinforcing member that confining force is provided to bead on the wheel rim in the gas leakage driving process.
The present invention is an optimized carcass path of having introduced a uniqueness descriptively, it is defined like this, wherein have an axial outermost layer cover tire at least, it is at first from a tread portion and lower tire side wall junction partly, pass through the outside of the midway location between tire innermost layer and the outermost layer vertically, pass through the inside of this breast wheel profile again, finally reach point specific on the bead.After this manner, in the scope that spreads all over lower tire side wall and bead part, axially the drawing stress in the outermost layer cover tire is maximized on degree.Cover tire of the present invention is fixed on the bead by reinforcing member, this reinforcing member at the edge that has defined cover tire on the side so that can resist the pressure that cover tire produced in the inflation of vehicle or the driving process of gas leakage.This cover tire is fixed in reinforcing member on the bead, and it includes the tire line that is in the nature circumference guiding or other the reinforcing member that not necessarily has the tire line.Compare with the tire that trends towards only using under the gas leakage state of routine, this tire trends towards utilizing additional design constraint to extend gas leakage and travels to guarantee the confining force of bead on the assembling wheel rim in the middle of the gas leakage driving process.The present invention has introduced a kind of second bead reinforcing member, it is arranged at the outside of this cover tire vertically, this cover tire is being fixed a reinforcing member that the regulation geometric position is arranged, in the middle of the gas leakage driving process, providing a suitable confining force, and allow tire have on the wheel rim of nominal contour simultaneously to have the installation simplification one to the bead of assembling on the wheel rim.Bead confining force reinforcing member among the present invention can include any material that is suitable for going to resist stress and temperature traverse in the vehicle ' process, for example circumference guiding tire line or filament, metal cable, elastomeric material, fiber reinforced resinous substrates and equivalent thereof.
In most preferred embodiment of the present invention, tire has the cover tire reinforced of the tire line of radially-directed independently, it has a passage and bead and is suitable for tire thickness axis at the lower tire side wall place, make the bead part of sidewall and cover tire obtain maximization on extent and scope, this cover tire can keep suitable pressure in inflation or gas leakage driving process.One or more meniscate fastening elements are set on the lower tire side wall between cover tire and the tire axial innermost surface, make operating effort and the operational torque that in gas leakage driving process tire can support unit.For fixing cover tire at each bead place, on at least one side surface, this cover tire is delimitd a boundary line by at least one coil that is made of tire line of circumference guiding in the axial direction, and this tire line is incorporated in the cover tire fixedly among the elastomeric material layer between the tire line that places cover tire and circumference guiding.One bead confining force reinforcing member is positioned at the fixedly outside of reinforcing member of this cover tire and cover tire vertically.An elastomeric bead filling member is disposed radially in the outside of bead confining force reinforcing member, and vertically between this cover tire and tire axial outermost surface.
In the second embodiment of the present invention, tire has at least two cover tires, and first cover tire is set at the outside of second cover tire vertically and radially.The passage of the outermost layer cover tire that is consistent with pulling force makes the outline line in the most preferred embodiment obtain optimization.This embodiment has at least two meniscate fastening elements, and wherein first is arranged between the first and second outer plies, and second is arranged at the second outer plies and tire radially between the surface of innermost layer.In the bead part, this two-layer cover tire can have a common circumference lubber-line, also can advance along the circumference lubber-line at contiguous place.Cover tire is fixed on the bead by the coil that is in the nature circumference guiding tire line, and this tire line delimited the boundary of cover tire separately vertically.As among first embodiment, a bead reinforcing member and an elastomeric bead filled rubber material have been used here.
In the third embodiment of the present invention, this tire has at least three cover tires, and first cover tire is set at the outermost layer of the second and the 3rd cover tire vertically and radially, and the 3rd cover tire is set at the inboard of second cover tire in the axial direction.What meet a force value is that the passage of outermost cover tire makes similar in appearance to the outline line of this most preferred embodiment and is optimized at least.This embodiment has at least three meniscate fastening elements, and first element places between the first and second outer plies, and second element places between the second and the 3rd outer plies, and the 3rd element places the 3rd outer plies and tire radially between the surface, innermost layer.These cover tires are fixed on the bead by the coil that the tire line that is in the nature the circumference guiding constitutes by at least one, and these tire lines have defined the edge of cover tire respectively vertically.In the present embodiment, this second and the 3rd cover tire has a common circumference lubber-line in the bead zone, and the tire line consistency of the second and the 3rd outer plies is less than the first outer plies.As selection, any one in three outer plies can only be advanced along the circumference lubber-line in proximity, and wherein the tire line consistency of each outer plies is respectively independently.As first embodiment, a bead reinforcing member and an elastomeric bead filled rubber material have been used here.
Description of drawings
Fig. 1 is the part sectional view of a reference data tire, and it is along cutting open by the meridian plane of rotating shaft.
Fig. 2 be one with the part sectional view of the corresponding gas leakage traveling tire of most preferred embodiment of the present invention, it is along cutting open by the meridian plane of rotating shaft.
Fig. 3 a be one with the part sectional view of the corresponding gas leakage traveling tire of most preferred embodiment of the present invention, it is along cutting open by the meridian plane of rotating shaft.For the sake of clarity, some tire parts are deleted from drawing.
Fig. 3 b is an enlarged view of tire represented among Fig. 3 a, and it has shown the details at the cover tire profile of this lower tire side wall part.For the sake of clarity, some tire parts are deleted from drawing.
Fig. 3 c is an enlarged view of tire represented among Fig. 3 a, and it has shown the details at the cover tire profile of this tire lower sidewall portion and bead part.For the sake of clarity, some tire parts are deleted from drawing.
Fig. 4 is the enlarged view of the lower wall and the bead part of a gas leakage traveling tire of the present invention, and it is that the edge is cut open by the meridian plane of rotating shaft, and has shown the configuring condition of elasticity bead filling thing.
Fig. 5 a be one with the part sectional view of the corresponding gas leakage traveling tire of second embodiment of the invention, it is along cutting open by the meridian plane of rotating shaft, and has the carcasses of two alignment one common annulars on tyre bead.
Fig. 5 b be one with the part sectional view of the bead of the corresponding gas leakage traveling tire of second embodiment of the invention part, it is along cutting open by the meridian plane of rotating shaft, and has two carcasses that have common circumferential alignment on its bead.
Fig. 6 be one with the part sectional view of the corresponding gas leakage traveling tire of third embodiment of the invention, it is along cutting open by the meridian plane of rotating shaft, and has three cover tires.
Fig. 7 be one with the enlarged perspective of the bead of the corresponding gas leakage traveling tire of third embodiment of the invention part, it has shown that this second and the 3rd cover tire lays the common circumferential position of layer.
Invention specifically describes
When the tire on being assemblied in wheel rim supported on the ground fully loadedly, in the driving process of tire, particularly in the process that gas leakage is travelled, it need stand distortion, this increase or reduced the pressure that results from the cover tire.Under the situation of conventional design, dig or when one or more cover tire was provided with vertically, metaboly mentioned above all can make this cover tire enter a state with compressing stress at cover tire no matter be.This state with compressing stress might be to come across when a cover tire side is set at neutral axis of bending in the tyre structure and the optional position between the neutral axis curvature initial point.On the contrary, one is provided with and can yields to from the cover tire side that neutral axis and its curvature initial point are outwards arranged diametrically the pressure that has increased vertically deformation process.Common be used for material that Outer Tyre reinforces for the resistivity of circulation tensile stress generally greater than resistivity to the circulation compression effort.With reference to the tire 20 shown in the figure 1, under steam, and particularly in the gas leakage driving process, the distortion of this tire can make cover tire partly yield to compression effort at this tire upper side wall, at least be cover tire 12 places in the innermost layer, or in the A lower side wall portion office of outermost layer cover tire 10, or dig the part place at one second cover tire 11.The minimizing of the endless belt of these compression efforts can increase the durability of tire, particularly in the middle of the gas leakage driving process.As selection, the minimizing of these compression effort endless belt makes the utilization of cover tire reinforcement material become possibility, and this material helps using under pressure, and has and can improve tyre performance and reduce potential benefit such as tire quality.
Tire shown in the present has a kind of distribution form that compression effort in the cover tire is lowered with respect to the gas leakage of the routine layout that travels.This effect realizes by being provided with an outermost layer optimized carcass path, and it makes the distortion of tire under load carrying ability trend towards the pressure that sidewall and bead at this tire partly increase cover tire.This kind result's realization is to the fixing not infringement of cover tire at the bead place.This outermost layer optimized carcass path is in the side wall portion office, and cover tire is arranged at vertically is positioned at the outer meridian plane place of neutral bending axis line, and partly locates at bead, and cover tire is arranged at vertically to be positioned in the neutral bending axis line.In the position near this sidewall and bead junction partly, this cover tire side and neutral bending axis line intersect.This point of crossing is corresponding at position and curve transition endless belt axial and radially.From the radially outside side wall portion office of this transition endless belt, the tire of deflection trends towards increasing further the curvature of this outer plies.Partly, be forced to bending because this bead partly assembles the influence of rim side, so that the curvature of outer plies increases again from the radially inside lower wall of this transition endless belt and bead.
Tire among the present invention also further provides an independent structures for cover tire being fixed in this bead and this bead being remained on the wheel rim.The unique bead structure of among the present invention this has given the tire layout designer with bigger design flexibility, make it can guarantee that all cover tires can both have passage in the bead zone, it is provided with vertically and is positioned at from neutral axis inwardly as far as possible at a distance, but simultaneously, this cover tire has bead structure, and it can make bead that enough confining forces be arranged on wheel rim in the gas leakage driving process.
Fig. 2 has represented tire constructed in accordance 100.In the embodiment shown in Figure 2, tire 100 is a kind of passenger tyres, and it has one and ends in shoulder at the lateral edges place of tread portion and divide 105 the tread portion that combines with ground 101.Sidewall sections 106 divides 105 radially to extend to bead part 107 from shoulder.Tire 100 also further has a cover tire 110, and it extends to this bead part 107 from tread portion 101 through sidewall sections 106.Cover tire 110 is in the nature the tire line of radially-directed and reinforces, regenerated fiber for example, and polyester, iron and steel, aromatic poly amide or any other are suitable for the material as the Outer Tyre strengthening agent.The cover tire strengthening agent has the highest modulus in tension, and for example iron and steel or aromatic poly amide just are suitable for making the tire with individual layer cover tire.These materials are suitable for any one embodiment disclosed herein.Tire 100 can comprise that the internal layer liner of a routine or other are used to constitute the material on internal layer surface 108 of the tire of opposing air diffusion.In cover tire 110 outsides and along warp-wise setting and inboard and what be disposed radially is a tyre surface ruggedized construction at tread portion 101.In the embodiment shown in Figure 2, this tyre surface ruggedized construction comprises the shoestring 103 and 104 that at least two tire lines are reinforced, and it has some with a tire line with respect to the angle orientation of periphery in this tire.Tire line ruggedized construction in this shoestring 103 on the direction positioning relation with shoestring 104 antithesis, they might not be with same angle tilt orientation.The one tyre surface ruggedized construction 102 that is at least the 3rd layer radially is arranged at the outside of shoestring 103, and is the tire line reinforcing of circumference orientation by essence.
The radially innermost layer of cover tire 110 ends in bead part 107, and does not dig around bead heart yearn or other bead ruggedized construction.That is to say that axial coordinate of each definition cover tire 110 appearance profile all has a unique radial position, each radial position is all less than the equatorial circle of tire.Cover tire 110 is fixed on the bead part 107 by the coiled wire-wound coil of at least one circumferencial direction, and this coil is made of the tire line 141 or 142 that leads in a circumferential direction, and they have defined the border, side of cover tire 110 at least in a side.Here " fix " at bead and mean that partly tire line coil 141 or 142 resists the pressure that results from cover tire 110 in the middle of inflation of tire or disappointing driving process, it is by being adhered on the reinforcing tire line of this cover tire side with tire line coil, rather than it is wrapped on the conventional bead heart yearn.The arrangement form of the outer plies of other selectable cover tire fixed sturcture or bead part is all applying for that the people discloses in the 5th, 660, No. 656 US Patent of Herbelleauu etc., and it can be hereby expressly incorporated by reference.In order in the inflation of tire and the driving process that leaks gas, bead to be remained on the fitting of tire wheel rim outside that coil 145 has been arranged in cover tire 110 vertically of supplying that is in the nature along the circumference guiding.In the embodiment shown in Figure 2, sidewall sections 106 also includes three meniscate fastening elements 131,132 and 133, and they are arranged between cover tire 110 and the tire innermost surface 108 vertically.Meniscate fastening element 131,132 and 133 can be made up of identical or different rubber constituent, but this coefficient of elasticity is preferably between about 8 Mpa and 14 Mpa.If use the same rubber constituent, then tire 100 will only have an independent crescent fastening element (not shown).For at this open properties of materials, elastomeric modulus promptly refers to the elastic stretching modulus that prolongs with 10%.
With reference to the partial view of lower tire side wall shown in Fig. 3 a, 3b and the 3c and bead part, describe the first-selected passage of cover tire 110 now in detail.Disclosed as the front, when cover tire was arranged on the surface of the neutral bending axis in this tyre structure, the drawing stress of cover tire can reach at utmost.On this surface, be meant the initial point of the radius of curvature of this neutral axis.Owing to will at length be described to the cover tire track, count a middle reference wheel profile 150 approximately in this position with neutral axis of bending, it is to be made of the track that the intermediate point between tire innermost surface and the outermost surface forms.
Three R point N, Z and P on tire 100 outermost surfaces in Fig. 3 a, 3b and 3c, have been represented to be positioned at.One the 4th R point Q has defined the point of crossing of cover tire profile 110 and reference contours 150 from function.Wucan examination point R has defined a wheel rim R point as the function between standard rim width W and the standard rim diameter D.Wheel rim R point R has one from the axial coordinate W/2 of tire equator planar survey and one the radial coordinates D/2 that measures of the rotation axis of the tire shown in Fig. 1 freely.The locus of R point N, Z, P and R be at mounting of tyre on wheel rim and be inflated to Tire and Rim Assicuation of Copley, define the force value of defined the time among the Ohio.Tyre surface R point N is positioned the junction point between the sidewall sections of tyre surface and tire 100.Tyre surface R point N is in that axially and directly upwards to be defined as being positioned at outermost surface with tire tangent and become with horizontal surface on the straight line at 30 ° of angles.Referring now to accompanying drawing 3c, bead R point Z is defined within the axial outermost border of tire 100 and the standard radius of self-assembly wheel rim radially has been offset on the horizontal intersection point of Hz distance.The radial position of bead R point Z is defined as radially outwards estimating from the radially outermost border of rim the clearance distance of regulating an about 5mm to 7mm.Therefore, stipulating under the rim contour situation by Tire and Rim Assicuation " J ", promptly its defined the rim height be 17.5mm+/-during 1mm, the distance of side-play amount Hz should be about 21.5mm to 25.5mm.By the details on this tire design layout of representing in the accompanying drawing as seen, R point Z is corresponding to the outermost surface that is partly protruded by lower tire side wall and the bead joining of the recessed outline line summit that constitutes partly.Curve distance between R point Z and the R point N has defined the length L of sidewall sections 106.
Sidewall R point P is positioned the sidewall sections 106 on the middle endless belt between bead R point Z and the tyre surface R point N.As shown in Figure 2, the thickness of sidewall sections 106 and the location of cover tire 110 on sidewall all are unmodifieds with respect to this endless belt.Sidewall R point P be from bead R point Z dislocation one section prolong the curve distance A that this tire outermost layer is measured, and curve distance A generally is in roughly between 45% to 65% of integral side walls length L.At R point P place, tire 100 has an axial thickness t
p, cover tire 110 have one from outer surface of tire inwardly measure vertically axial location t
2, make t
2≤ t
p/ 2, and t preferably
2Roughly be equivalent to t
p8% to 25%.Has an axial thickness t at bead R point Z place tire 100
2, cover tire 110 have one from outer surface of tire inwardly measure vertically axial location t
3, make t
3〉=t
2/ 2.Preferably roughly be equivalent to axial width t
260% to 80%.At wheel rim R point R place, tire 100 has an axial thickness t
B, cover tire 11O have one from the tire outermost surface inwardly measure vertically an axial location t
1, make t
1〉=t
B/ 2.T preferably
1Be roughly the bead thickness t
B55% to 85%.
When a tire in the middle of the load-carrying driving process deflection took place, when deflection particularly took place in gas leakage is travelled significantly, the deformation energy of bead and lower sidewall portion was controlled by the mutual action of tire construction and rim.From the far place of wheel rim, the distortion of tire is controlled by the bending of sidewall sections diametrically.R point Q has defined the point of transition of this dual mode.The location of R point Q is cover tire 110 axial location t corresponding to wheel rim R point Z on endless belt
3Function.With reference to accompanying drawing 3c, R point Q is positioned at meridian plane reference wheel profile 150 and has a radius R
zThe point of crossing place of circular arc 160, and the initial point of this circular arc is positioned at wheel rim R point Z place.Radius R
zGenerally roughly be t
390% to 120%, R wherein
zT preferably
3100%.Element in the optimized carcass path 110 has been described fully.
The simplification that wheel rim is assemblied in confining force on the wheel rim and assembling depends on and is arranged at the fixedly performance of the wheel rim confining force reinforcing member 145 in reinforcing member 141 and/or 142 outsides of cover tire vertically, has represented reinforcing member 141,142 in Fig. 3 in the enlarged view of rim section.In this embodiment, wheel rim confining force reinforcing member 145 is made up of at least one coil, and coil is to be made of the tire line along the circumference orientation of imbedding elastomeric material in essence.Have the iron and steel drag-line of imbedding elastomeric material in the embodiment of this manufacturing tire, this rubber mix material preferably has Xiao's formula A level hardness greater than 70 in this case.Yet, impliedly used other reinforcement material among the present invention, as the steel members of closely being tied up, elastomeric material, or, imbed carbon or aromatic poly amide fiber optic materials in the thermoplastic or thermosetting resin material as selecting.
Be positioned in the rim section 107 and for sidewall 106 radially in the resilient infill 134 of layer segment be arranged at the outside of cover tire 110 vertically, shown in accompanying drawing 4a.This filling member 134 keeps the exterior boundary of reinforcing member 145 upwards radially to extend until sidewall 106, and reduce gradually on the axial cross section width from wheel rim.This filling member 134 radially extends to the above H of wheel rim R point
1Distance.H
1Preferably be equivalent to 130% to 170% of radial distance between wheel rim R point R and the R point Q.H in this embodiment
1Preferably between wheel rim R point R and the R point Q 150% of radial distance.Wheel rim filling member 134 is to have roughly by one that the elastomeric material of 60Mpa coefficient of elasticity constitutes, and can include the reinforcing member of imbedding in the artificial rubber that replenishes.
In second embodiment of the invention, shown in accompanying drawing 5a, tire 200 comprises at least two cover tires 210 and 211.Cover tire 210 has a passage identical with the cover tire 110 of tire 100 described in the first embodiment of the invention.Second cover tire 211 axially is arranged at the inboard of first cover tire 210 and is had an orbit wheel profile that roughly is positioned in the middle of cover tire 210 and the tire inner surface 208 on sidewall 206.The outline line that the observation of accompanying drawing 5a is demonstrated second cover tire 211 on the sidewall sections 206 is roughly upwards consistent in the axis of the tire 200 of the upper side wall part in the R point P outside with the footpath.One first crescent fastening element 231 is arranged between first cover tire 210 and second cover tire 211, and one second crescent fastening element 232 is arranged between second cover tire 211 and the surface, tire innermost layer 208.At the radially innermost layer of bead part 207 boundary, second cover tire 211 has the circumferential calibration of the vicinity of one and first cover tire 210. Cover tire 210 and 211 is fixed on the bead place by the first, the second and tertiary winding in the circumference tire line fastening element 241,242 and 243 respectively in the present embodiment.Shown in accompanying drawing 5a, the coil in these circumference tire line fastening elements is provided with respect to cover tire 210 and 211 vertically.Have the confining force of improvement and the simplification in when assembling in order to ensure bead on wheel rim, a bead confining force fastening element 245 is arranged at the outside of consolidate coil 242 vertically.One elastomeric bead filling member 234 is arranged on the outside of first cover tire 210 and vertically radially in the outside of bead confining force reinforcing member 245.This filling member 234 radially extends upwardly to sidewall 206 from the radially exterior boundary of bead confining force reinforcing member 245, and reduces gradually on the axial cross section width.Special reinforcement material among first embodiment also goes for two cover tires here, yet but there is no need to make this cover tire also to use identical materials.
Accompanying drawing 5b has represented the form of distortion of a present embodiment, and wherein first and second cover tires have a common circumference lubber-line at the bead place.In the case, this first cover tire 210 can have the pressure maximization outline line identical with being used for the first embodiment tire 100.In this form of distortion, cover tire 210 and 211 is by being that the coil 241 and 242 of circumference tire line reinforcing member is fixed in the bead part at least.
In the third embodiment of the present invention, as shown in Figure 6, tire 300 has three cover tires 310,311 and 312.First cover tire 310 is arranged at outermost layer vertically and sidewall sections 306 places that provide in detail in first embodiment have a passage.The second and the 3rd cover tire 311 and 312 is arranged at the inboard of first cover tire 310 respectively vertically.Same, three meniscate fastening elements 331,332 and 333 are arranged between first and second cover tire 310 and 311 respectively, between the second and the 3rd cover tire 311 and 312, and between the surface, innermost layer 308 of the 3rd cover tire 312 and tire 300.Be arranged on a circumference lubber-line on the common bead by border, radially innermost layer, thereby embodied three effects that cover tire is fixed in the bead part in the present embodiment the second and the 3rd cover tire.The consistency of this tire line in fixing endless belt can be adjusted according to the needs of the durability that can realize suitable adhesive maximum tire line consistency and bead.Shown in accompanying drawing 7, the tire line consistency in each second cover tire 311 and the 3rd cover tire 312 all is less than the overall tire line consistency in fixed area.By way of example, if this cover tire 311 and 312 is made of cross one another tire line respectively, then the average consistency of corresponding cover tire will be half of tire line consistency in the fixed area.This structure is brought, and to have a mind to effect be that tire has the axial width that lower total quality and bead place reduce.Other arrangement with different tire line consistencies also is an acceptable.For example, the second and the 3rd cover tire can have the tire line consistency of minimizing and not have common circumference lubber-line at the bead place.Also can be used to the tire that this has three cover tires as the cover tire reinforcement material described in first embodiment, yet necessity does not make cover tire itself use identical materials yet.
The conventional tire line consistency that in the cover tire that the tire of the cover tire that bead is dug is being added, also can have minimizing that has.Yet, because these conventional tires all are to stack together by the fabric that multilayer is scribbled rubber to form, so they can not have common circumference lubber-line at the bead place.Its result is exactly a bead that has increased axial width, and this first outer plies outwards is displaced to the inaccessiable boundary of optimal channel of outermost layer cover tire vertically at the bead place.
The common circumference lubber-line of second among the present invention and the 3rd cover tire allows all outer plies and can be set in the bigger border vertically with respect to the tire that does not have such one common lubber-line.This second and the 3rd cover tire is determined the border by the coil of circumferential tire line reinforcing member 341 and 342 in the side respectively.The setting on the radially innermost layer border of first cover tire 310 is to determine by circumference tire line reinforcing member 342 and 343 as shown in Figure 6 in the axial direction.Bead part 306 also can include a bead confining force reinforcing member 345 and a bead filling member 334.
Claims (24)
1. tire, include at least one is fixed in each side of tire at the bead place axial outermost layer cover tire, this bead has a base that is tending towards being installed on the design assembling wheel rim of tire, each bead radially extends upward by a sidewall sections, this sidewall sections and a tread portion join, comprising:
One by corresponding to this tire axial innermost surface and the axial middle reference wheel profile of the track definition that forms of the each point of the midway location between the outermost surface,
One wheel rim R point R on described bead, it is defined as having one and is equivalent to half the radial coordinates of normal diameter that half axial coordinate and of normal width is equivalent to assemble wheel rim,
One bead R point Z, it is defined within the tire outermost surface and a radial coordinates from wheel rim R point R outwards has been offset on the horizontal point of crossing of a segment distance,
One tyre surface R point N, it is defined within on the outermost surface of tire, and is positioned at the junction of tread of tyre and sidewall sections,
One sidewall R point P, it is defined within on the outermost surface of lower tire side wall, and between R point Z and N;
Wherein said at least one axial outermost layer cover tire corresponding to the radial position between described sidewall R point P and described tyre surface R point N, is arranged at the outside of described middle reference wheel profile vertically,
Wherein said at least one axial outermost layer cover tire and described middle reference wheel profile intersect at 1 Q, described some Q has a radial position between described R point Z and described R point P, and corresponding at described some Q with interior radial position, this cover tire is set to the inboard of described middle reference wheel profile thereupon vertically
Wherein corresponding to each at described sidewall R point P with interior radial position, each axial coordinate of described at least one axial outermost layer cover tire all has a corresponding monodrome radial coordinates,
And described tire also includes one and is used for the first bead reinforcing member and that described at least one cover tire is fixed on the bead is used at the gas leakage driving process in assembling the second bead reinforcing member that confining force is provided to bead on the wheel rim.
2. tire as claimed in claim 1 is characterized by: described sidewall R point P is roughly 45% to 65% of curve distance between described bead R point Z and the described tyre surface R point N.
3. tire as claimed in claim 2, it is characterized by: inwardly measure the axial location at the described outermost layer cover tire of sidewall R point P of gained vertically from the outermost surface of described tire, be roughly the axial outermost layer of described tire and axially the total distance between the innermost surface 8% to 25%.
4. tire as claimed in claim 1 is characterized in that: the radial position of described bead R point Z is roughly located between the radially outside 21.5mm to 25.5mm of wheel rim R point R.
5. tire as claimed in claim 4 is characterized in that: the axial location of described outermost layer cover tire at described bead R point Z place is 60% to 80% of the described tire axial outermost surface that inwardly measures vertically of the outermost surface from described tire and the total distance between the surface, innermost layer approximately.
6. tire as claimed in claim 1, it is characterized in that: described some Q is positioned on the point of crossing of a described middle reference wheel profile and a circular arc, the initial point of this circular arc is positioned at described bead R point Z place, its radius be about the tire outermost surface and in bead R point Z place measure the axial location of described outermost layer cover tire between axial distance 90% to 120%.
7. tire as claimed in claim 1 is characterized in that: described outermost layer cover tire is the tire axial outermost surface that inwardly measures vertically of the outermost surface from described tire and axially between the surface, innermost layer 55% to 85% of gross thickness at the axial location at described R point R place approximately.
8. tire as claimed in claim 1, it is characterized in that: the described first bead reinforcing member is being the edge that an axial side has defined at least one cover tire at least, the described first bead reinforcing member includes at least one coil that is made of circumference guiding tire line, and this tire line has been born the pressure that results from the cover tire in the inflation of tire or gas leakage driving process.
9. tire as claimed in claim 1, it is characterized in that: the described second bead reinforcing member is axially set in the outside of described at least one cover tire and the described first bead reinforcing member, and have at least one by the basic coil that constitutes for the directed tire line of circumference, this tire line is to have imbedded a kind ofly to have greater than in the rubber mix material of Xiao's formula A level hardness of 70.
10. tire as claimed in claim 1, it is characterized in that: described bead also includes at least one resilient infill, it is arranged on the outside of described at least one cover tire vertically, described filling member have one more than described wheel rim R point R radially an outermost distance range and the radially interior distance range at the first bead reinforcing member place, and described filling member has a coefficient of elasticity that is about 60Mpa.
11. tire as claimed in claim 10 is characterized by: the radially outermost distance range of described filling member be approximately described wheel rim R point R and the some Q between radial distance 130% to 170%.
12. tire as claimed in claim 1, it is characterized in that at least one meniscate reinforcing member is arranged at the position between the surface, innermost layer of described cover tire and described tire, and described at least one meniscate fastening element has on the numerical value about the coefficient of elasticity between the 8Mpa to 14Mpa.
13. tire as claimed in claim 1, it also includes: one is arranged at second cover tire of the described first cover tire inboard vertically, and have the first and second crescent reinforcing members, the described first crescent fastening element is arranged between described first cover tire and described second cover tire, and the described second crescent fastening element is arranged between the surface, innermost layer of described second cover tire and described tire.
14. tire as claimed in claim 13 is characterized in that: described cover tire has a common circumference lubber-line at the bead place.
15. tire as claimed in claim 13 is characterized in that: the described first and second crescent fastening elements have one numerically about the coefficient of elasticity between the 8Mpa to 14Mpa.
16. tire as claimed in claim 13, it also includes one and is arranged at the 3rd outer plies of the inboard of the described second crescent reinforcing member vertically, and has the 3rd a crescent reinforcing member that is arranged between the surface, described innermost layer of described the 3rd cover tire and tire.
17. tire as claimed in claim 16 is characterized in that: described the 3rd crescent reinforcing member has one numerically about the coefficient of elasticity between the 8Mpa to 14Mpa.
18. tire as claimed in claim 16 is characterized in that: the described second and the 3rd cover tire has a common circumference lubber-line at the bead place.
19. tire as claimed in claim 13 is characterized in that: the circumference tire line consistency of described second cover tire and the 3rd cover tire is less than the circumference tire line consistency of described first cover tire.
20. tire as claimed in claim 13 is characterized in that: the circumference tire line consistency of described second cover tire and the 3rd cover tire is equivalent to half of circumference tire line consistency of described first cover tire.
21. tire, include at least the first, second and the 3rd outer plies, it is fixed on each side of described tire at the bead place, described bead has a base that is tending towards being installed on the design assembling wheel rim of tire, each bead radially extends upward by a sidewall sections, and this sidewall sections and a tread portion join, comprising:
One by corresponding to this tire axial innermost surface and the axial middle reference wheel profile of the track definition that forms of the each point of the midway location between the outermost surface,
One wheel rim R point R on described bead, it is defined as having one and is equivalent to half the radial coordinates of normal diameter that half axial coordinate and of normal width is equivalent to assemble wheel rim,
One bead R point Z, it is defined within the tire outermost surface and a radial coordinates from wheel rim R point R outwards is offset on the horizontal point of crossing of a segment distance,
One tyre surface R point N, it is defined within on the outermost surface of tire, and is positioned at the junction of tread of tyre and sidewall sections,
One sidewall R point P, it is defined within on the outermost surface of lower tire side wall, and between R point Z and N;
The described first outer plies is arranged at described second and the outside of the 3rd outer plies vertically, and is arranged at the outside of reference wheel profile in the middle of radial position between described sidewall R point P and described tyre surface R point N described vertically,
Wherein said first cover tire and described middle reference wheel profile intersect Q on one point, described some Q has a radial position between described R point Z and described R point P, and corresponding to radial position described some Q inboard, first cover tire is set to the axial inboard of described middle reference wheel profile thereupon
Wherein corresponding to the radial position of each described R point P inboard, each axial coordinate of described cover tire has a corresponding monodrome radial coordinates, and
The described second and the 3rd outer plies is set at the axial inboard of the described first outer plies, and the second and the 3rd outer plies has a common circumference lubber-line at the bead place, and
Described tire also includes at least one first, one second and one the 3rd crescent fastening element, the described first crescent fastening element is arranged between described first cover tire and described second cover tire, and the described second crescent fastening element is arranged between described second cover tire and described the 3rd cover tire, and described the 3rd crescent fastening element is arranged between the surface, described innermost layer of described the 3rd cover tire and this tire, and
Described tire also includes one and is used for the first bead reinforcing member and that described at least one cover tire is fixed on the bead is used at the second bead reinforcing member that confining force is provided to bead on the assembling wheel rim under the gas leakage motoring condition.
22. tire as claimed in claim 21 is characterized in that: the circumference tire line consistency of described second cover tire and the 3rd cover tire is less than the circumference tire line consistency of described first cover tire.
23. tire as claimed in claim 22 is characterized in that: the circumference tire line consistency of described second cover tire and the 3rd cover tire is equivalent to half of circumference tire line consistency of described first cover tire.
24. tire as claimed in claim 21 is characterized in that: described crescent fastening element has one numerically about the coefficient of elasticity between the 8Mpa to 14Mpa.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/US1999/011812 WO2000073093A1 (en) | 1999-05-27 | 1999-05-27 | Runflat tire having optimized carcass path |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1319053A true CN1319053A (en) | 2001-10-24 |
| CN1207160C CN1207160C (en) | 2005-06-22 |
Family
ID=22272857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB998111481A Expired - Fee Related CN1207160C (en) | 1999-05-27 | 1999-05-27 | Runflat tyre having optimized carcass path |
Country Status (8)
| Country | Link |
|---|---|
| EP (1) | EP1100688A1 (en) |
| JP (1) | JP2003500281A (en) |
| KR (1) | KR20010053607A (en) |
| CN (1) | CN1207160C (en) |
| AU (1) | AU762139B2 (en) |
| BR (1) | BR9912443A (en) |
| CA (1) | CA2338573A1 (en) |
| WO (1) | WO2000073093A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1729110B (en) * | 2002-12-26 | 2010-10-13 | 米其林技术公司 | Extended mobility tire with variable rigidity sidewalls |
| CN101460319B (en) * | 2006-06-06 | 2010-12-01 | 株式会社普利司通 | Run-flat pneumatic radial tire |
| CN101610921B (en) * | 2007-02-06 | 2011-09-14 | 株式会社普利司通 | Safety tire |
| CN106671707A (en) * | 2015-11-11 | 2017-05-17 | 住友橡胶工业株式会社 | Run-flat tire |
| CN106794651A (en) * | 2014-10-13 | 2017-05-31 | Vmi荷兰公司 | Method and drum for manufacturing tire especially Runflat tire |
| CN109382946A (en) * | 2017-08-03 | 2019-02-26 | 住友橡胶工业株式会社 | The manufacturing method of the motorcycle tyre of rugged ground run |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ATE301553T1 (en) * | 2000-03-31 | 2005-08-15 | Pirelli | SELF-SUPPORTING Pneumatic VEHICLE TIRE AND METHOD FOR THE PRODUCTION THEREOF |
| ATE361206T1 (en) * | 2000-10-10 | 2007-05-15 | Michelin Soc Tech | TIRES WITH MORE BASE LAYERS IN THE SIDEWALL THAN IN THE BEAD |
| JP4509480B2 (en) * | 2001-05-21 | 2010-07-21 | ソシエテ ド テクノロジー ミシュラン | Tire with double fixed carcass ply |
| WO2003089258A1 (en) * | 2002-04-19 | 2003-10-30 | Bridgestone Corporation | Run flat tire and method of manufacturing the tire |
| FR2864469A1 (en) * | 2003-12-30 | 2005-07-01 | Michelin Soc Tech | Pneumatic tyre designed to run when deflated has self-supporting side walls reinforced by inserts of rigid rubber composition in zones |
| JP2009262809A (en) * | 2008-04-25 | 2009-11-12 | Toyo Tire & Rubber Co Ltd | Run flat tire |
| JP5307647B2 (en) * | 2009-06-22 | 2013-10-02 | 株式会社ブリヂストン | Tire for agricultural machinery |
| US10040323B2 (en) * | 2013-03-15 | 2018-08-07 | Bridgestone Americas Tire Operations, Llc | Pneumatic tire with bead reinforcing elements at least partially formed from carbon fibers |
| JP2020066397A (en) * | 2018-10-26 | 2020-04-30 | 株式会社ブリヂストン | Run-flat tire |
| KR102566457B1 (en) * | 2021-07-09 | 2023-08-14 | 금호타이어 주식회사 | The pneumatic tire |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2425333A1 (en) * | 1978-05-10 | 1979-12-07 | Kleber Colombes | SAFETY TIRES |
| CA1126635A (en) * | 1979-06-06 | 1982-06-29 | Mark H. Mineur | Pneumatic safety tire |
| ZA817371B (en) * | 1980-11-24 | 1982-10-27 | Goodyear Tire & Rubber | A pneumatic safety tire |
| IT1245271B (en) * | 1990-09-14 | 1994-09-13 | Pirelli | SELF-SUPPORTING CARCASS FOR MOTOR VEHICLE TIRES |
| DE69211296T2 (en) * | 1991-11-15 | 1997-01-23 | Pirelli | Self-supporting pneumatic tire for motor vehicle wheels with elastic support inserts incorporated into the side walls |
| US5368082A (en) * | 1992-09-30 | 1994-11-29 | The Goodyear Tire & Rubber Company | Radial ply pneumatic tire |
| US5879482A (en) * | 1996-03-15 | 1999-03-09 | Goodyear Tire & Rubber Company | Run-flat low-pressure all terrain vehicle (ATV) tire |
| EP0810105B1 (en) * | 1996-05-29 | 2003-07-09 | Bridgestone Corporation | Pneumatic radial tires provided with a side portion reinforcing layer |
| US5769980A (en) * | 1996-11-13 | 1998-06-23 | Bridgestone/Firestone, Inc. | Pneumatic tire with sidewall inserts having specified extension underneath the belt package |
-
1999
- 1999-05-27 WO PCT/US1999/011812 patent/WO2000073093A1/en not_active Application Discontinuation
- 1999-05-27 CA CA002338573A patent/CA2338573A1/en not_active Abandoned
- 1999-05-27 KR KR1020017001075A patent/KR20010053607A/en not_active Application Discontinuation
- 1999-05-27 JP JP2000621183A patent/JP2003500281A/en not_active Abandoned
- 1999-05-27 EP EP99924536A patent/EP1100688A1/en not_active Withdrawn
- 1999-05-27 BR BR9912443-2A patent/BR9912443A/en not_active IP Right Cessation
- 1999-05-27 AU AU41014/99A patent/AU762139B2/en not_active Ceased
- 1999-05-27 CN CNB998111481A patent/CN1207160C/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1729110B (en) * | 2002-12-26 | 2010-10-13 | 米其林技术公司 | Extended mobility tire with variable rigidity sidewalls |
| CN101460319B (en) * | 2006-06-06 | 2010-12-01 | 株式会社普利司通 | Run-flat pneumatic radial tire |
| CN101610921B (en) * | 2007-02-06 | 2011-09-14 | 株式会社普利司通 | Safety tire |
| CN106794651A (en) * | 2014-10-13 | 2017-05-31 | Vmi荷兰公司 | Method and drum for manufacturing tire especially Runflat tire |
| CN106794651B (en) * | 2014-10-13 | 2019-10-18 | Vmi荷兰公司 | For manufacturing the method and drum of tire especially Runflat tire |
| US11040508B2 (en) | 2014-10-13 | 2021-06-22 | Vmi Holland B.V. | Method and drum for manufacturing a tyre, in particular a run-flat tyre |
| CN106671707A (en) * | 2015-11-11 | 2017-05-17 | 住友橡胶工业株式会社 | Run-flat tire |
| CN106671707B (en) * | 2015-11-11 | 2020-07-03 | 住友橡胶工业株式会社 | Run flat tire |
| CN109382946A (en) * | 2017-08-03 | 2019-02-26 | 住友橡胶工业株式会社 | The manufacturing method of the motorcycle tyre of rugged ground run |
| US11104185B2 (en) | 2017-08-03 | 2021-08-31 | Sumitomo Rubber Industries, Ltd. | Method of manufacturing motorcycle tire for uneven terrain travel |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1207160C (en) | 2005-06-22 |
| CA2338573A1 (en) | 2000-12-07 |
| JP2003500281A (en) | 2003-01-07 |
| BR9912443A (en) | 2001-10-09 |
| AU4101499A (en) | 2000-12-18 |
| AU762139B2 (en) | 2003-06-19 |
| KR20010053607A (en) | 2001-06-25 |
| EP1100688A1 (en) | 2001-05-23 |
| WO2000073093A1 (en) | 2000-12-07 |
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