CN101746222B - Pneumatic tire - Google Patents
Pneumatic tire Download PDFInfo
- Publication number
- CN101746222B CN101746222B CN 200910260882 CN200910260882A CN101746222B CN 101746222 B CN101746222 B CN 101746222B CN 200910260882 CN200910260882 CN 200910260882 CN 200910260882 A CN200910260882 A CN 200910260882A CN 101746222 B CN101746222 B CN 101746222B
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- sawtooth
- laps
- pitch
- bracing ply
- belt structure
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- 229910000831 Steel Inorganic materials 0.000 claims description 8
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- 239000004760 aramid Substances 0.000 description 3
- 229920003235 aromatic polyamide Polymers 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 241000254043 Melolonthinae Species 0.000 description 2
- 210000001161 mammalian embryo Anatomy 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012946 outsourcing Methods 0.000 description 2
- 230000001012 protector Effects 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 241000143252 Idaea infirmaria Species 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
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- 238000007789 sealing Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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Abstract
A pneumatic tire is described which includes a tread, a carcass and a belt structure interposed between the carcass and the tread. The belt structure includes a pair of working belts, wherein the angle of the working belts range from about 15 degrees to about 30 degrees, wherein the belt structure further includes a zigzag belt structure located radially inward of the working belts. The zigzag belt structure is formed of at least two layers of cords interwoven together from a strip of rubber reinforced with one or more cords, wherein the strip forming the zigzag belt structure is layed up in a first zigzag winding extending from a first lateral belt edge to a second lateral belt edge in a zigzag wavelength having a first amplitude W1 followed by a second amplitude W2, and a second zigzag winding formed of a zigzag wavelength having a first amplitude W2 followed by a second amplitude W1.
Description
The application requires the U.S. Provisional Application No.61/139 of submission on December 19th, 2008,168 preceence, and this application is incorporated this paper by reference into.
Technical field
The present invention relates to a kind of air-inflation tyre, it has carcass and bracing ply is strengthened structure, more specifically, the present invention relates to the radial-ply tyre of using for aircraft, truck and other heavy lifts.
Background technology
For example in truck tyre or aircraft tire, the sawtooth bracing ply has been used for the bracing ply parcel at the tire that bears heavy lift.The sawtooth bracing ply has been eliminated the dew limit bracing ply end of tire shoulder.Fig. 1 shows the exemplary part of the tire with sawtooth bracing ply 5.The advantage of sawtooth bracing ply is, does not reveal the limit belt edges near tire shoulder, has greatly improved the tire durability.The shortcoming of sawtooth bracing ply is, there is overlapping layer near the edge tire shoulder.In some zones, there is too many layer, for example be generally 4 layers or more multi-layered, even there are 6 layers or more multi-layered in some positions.Show, the minimizing of the overlapping band in shoulder zone can improve durability.Therefore, need a kind of tire, it has improved belt edges durability, and does not have too much weight.
Summary of the invention
The present invention provides a kind of air-inflation tyre in first aspect, and it comprises: tyre surface; Carcass; And be interposed in belt structure between described carcass and described tyre surface.Described belt structure comprises a pair of work bracing ply, and the angle of described work bracing ply changes to about 30 degree from about 15 degree, and described belt structure also comprises the sawtooth belt structure.Described sawtooth belt structure is formed by the two-layer at least cord of weave in, described two-layer at least cord is formed by the rubber strip of strengthening by one or more cords, wherein, the strap arrangements that forms described sawtooth belt structure becomes the first sawtooth pitch of the laps, described the first sawtooth pitch of the laps extends to the second horizontal belt edges with the sawtooth wavelength from the first horizontal belt edges, described sawtooth wavelength has the first wave amplitude W1, has followed the second wave amplitude W2 in the direction opposite with described the first wave amplitude.Described sawtooth belt structure also is arranged to the second sawtooth pitch of the laps, described the second sawtooth pitch of the laps extends to the second horizontal belt edges with the sawtooth wavelength from the first horizontal belt edges, this sawtooth wavelength has the first wave amplitude W2, has followed the second wave amplitude W1 in the direction opposite with described the first wave amplitude.
The present invention provides a kind of air-inflation tyre in second aspect, and it comprises: tyre surface; Carcass; And be interposed in belt structure between described carcass and described tyre surface.Described belt structure comprises a pair of work bracing ply, and the angle of described work bracing ply changes to about 30 degree from about 15 degree, and described belt structure also comprises the sawtooth belt structure.Described sawtooth belt structure is formed by the two-layer at least cord of weave in, described two-layer at least cord is formed by the rubber strip of strengthening by one or more cords, wherein, described sawtooth belt structure forms: the first sawtooth pitch of the laps, described the first sawtooth pitch of the laps has the first wave amplitude Wmax in the first lateral ends, have the second wave amplitude Wmin in the second lateral ends, and Wmax＞Wmin; With the second sawtooth pitch of the laps, described the second sawtooth pitch of the laps has the first wave amplitude Wmin in the first lateral ends, has the second wave amplitude Wmax in the second lateral ends, and contiguous described the first sawtooth pitch of the laps of described the second sawtooth pitch of the laps is located.
Description of drawings
Present invention is described by way of example below with reference to accompanying drawings, wherein:
Fig. 1 is the partial schematic section drawing of tire with prior art of sawtooth bracing ply;
Fig. 2 shows the partial cross section of exemplary radial-ply tyre 10 of the present invention;
Fig. 3 is an example of tire assembly drum, and it shows formed bracing ply of the present invention;
Fig. 4 A is an example for the tire assembly drum of the circumferential arrangement of example purpose, and it shows the first turn over strap arrangements that forms the sawtooth bracing ply;
Fig. 4 B has shown the tire assembly drum of Fig. 4 A, and what it showed the sawtooth bracing ply only second turns cord pattern (for the sake of clarity, having removed first turns);
Fig. 4 C stands the close-up illustration of the band of u turn in belt edges;
Fig. 5 A is an example for the tire assembly drum of the circumferential arrangement of example purpose, and it shows the first turn over strap arrangements or the first band pitch of the laps that form the sawtooth bracing ply and arranges;
Fig. 5 B has shown the tire assembly drum of Fig. 5 A, and it shows bulging second and turns, and has shown that the first and second band pitch of the laps that form the sawtooth bracing ply arrange;
Fig. 5 C has shown the tire assembly drum of Fig. 5 A, and it shows the bulging the 3rd and turns, and has shown that the first, second, and third band pitch of the laps that forms the sawtooth bracing ply arranges;
Fig. 5 D has shown the tire assembly drum of Fig. 5 A, and it shows the bulging the 4th and turns, and has shown that the first, second, third and the 4th band pitch of the laps that forms the sawtooth bracing ply arranges;
Fig. 6 shows the sawtooth belt edges;
Fig. 7 shows the sawtooth belt edges at the section drawing at section A-A, B-B, C-C, D-D and E-E place, shows the estimation lap of each layer;
Fig. 8 shows the sawtooth bracing ply for the prior art of Fig. 1, and the sawtooth belt edges shows the estimation lap of each layer at the section drawing at section A-A, B-B, C-C, D-D and E-E place;
Fig. 9 A-9C shows the sawtooth bracing ply, and it has the lateral excursion of 0.1mm, wherein rouses 6.75 degree of deviation angle from Fig. 9 A and changes to 27 degree in Fig. 9 C to 13.5 degree in Fig. 9 B; And
Figure 10 A-10C shows the sawtooth bracing ply, and it has the lateral excursion of 8mm, wherein rouses 6.75 degree of deviation angle from Figure 10 A and changes to 27 degree in Figure 10 C to 13.5 degree in Figure 10 B.
The specific embodiment
Definition
Following definition is used for the present invention.
" triangle rubber " refers to be positioned at bead core footpath unstrengthened elastic body upward.
" height to width ratio " of tire refers to that the section height (SH) of tire and the ratio of its section width (SW) multiply by 100%, are expressed as percentum.
" axially " refers to the line parallel with the rotation axis of tire or direction with " axially ".
" tyre bead " refers to the part that comprises annular tensile member of tire, by cord parcel, and is configured as the trim designs wheel rim, and it has or do not have other reinforcing elements, for example bead coil outsourcing cloth, gas still, triangle rubber, protect toe glue and chafer.
" diagonal tyre " refers to that carcass has the tire of strengthening cord in casingply, and this reinforcement cord extends across tire from the bead core to the bead core with about 25-50 degree angle diagonally with respect to the equatorial plane of tire.These cords extend with opposite angle in alternating layer.
But " carcass " refers to sidewall rubber on belt structure, tyre surface, tread cushioning layer and carcass plies comprises the tire construction of tyre bead.
" circumferentially " refers to the surface perimeter extension and axially vertical line or the direction along annular tire tread.
" chafer " refers to not damaged by wheel rim around the material fillet of tyre bead outside placement for the protection of carcass plies, and the amount of deflection that distributes on wheel rim, and the sealing tire.
" gas still " refers to be arranged in the reinforcement structure of the bead part of tire.
" cord " refers to strengthen one in twisted wire, and the carcass plies in tire is formed by cord.
" equatorial plane (EP) " refers to perpendicular to the rotation axis of tire and passes the plane at the center of its tyre surface.
" bead coil outsourcing cloth " refers to around the fabric of the reinforcement of bead core and triangle rubber winding.
" tire seal " refer to tire protector with zero velocity and under normal load and pressure with contact patch or the area of contact of plane contact.
" air-retaining liner " refers to the elastic body or the other materials layer that form the inside face of tubeless tires and comprise expansion fluid in tire.
The area that " net-gross ratio " refers to the tire protector rubber that tire India and China contact with the road surface is divided by the value of the area of the tyre surface of tire India and China, and the latter comprises noncontact part, for example groove.
" radial-ply tyre " refers to have bracing ply or circumferential limited air-inflation tyre, and the cord that wherein extends from the tyre bead to the tyre bead is arranged with the cord angle of 65-90 degree with respect to the equatorial plane of tire.
" section height " (SH) refers to from the nominal rim diameter to tire radial distance at the external diameter of its equatorial plane.
" pitch of the laps (winding) " refers to turn around first of the band of tire assembly drum, tire or casing the pattern of the band of middle formation.
Fig. 2 shows a kind of partial section of exemplary radial-ply tyre 10, and it comprises: bead part 23 is equipped with bead core 22 in this bead part; Sidewall sections 24, it extends radially outwardly from bead part 23; And cylindrical tread portion 25, it extends between the radial outer end section of sidewall sections 24.Tire 10 is strengthened by the carcass 31 that extends from a bead part 23 to another bead part 23 ' (not shown) ring-type.Carcass 31 can comprise at least one casingply 32.Casingply 32 is fixed on bead core, and for example can be wound around away from the equatorial plane EP inboard around each bead core 22 from tire 10, to form the anti-package part.Bracing ply is strengthened bag 40 and is arranged between carcass 31 and tread portion 25.
According to a kind of example embodiment of the present invention, bracing ply is strengthened bag 40 and is comprised a pair of work bracing ply 41,42.Bracing ply 41 is radially inwardly located with respect to bracing ply 42.The bracing ply width of bracing ply 41 approximates greatly the tread arc width degree.Preferably, the bracing ply width of bracing ply 41 is equal to the tyre surface radian.The knuckle of bracing ply 41 is between about 16 to 30 degree, preferably has orientation left, and more preferably arrives between about 25 degree about 19.The bracing ply knuckle is with respect to circumferential measurement.Bracing ply 41 is preferably made by the steel with 4+3 * 0.35 structure.Percentage elongation % when 10% breaking load can be for about 0.18 to about 0.26, more preferably greater than 0.2.Percentage elongation % measures at the cord that obtains from vulcanized tyre.For cord embryo hungry area, the percentage elongation % when 10% breaking load can be about 0.2% to about 0.27%.
Bracing ply 42 is the right second components of work bracing ply.The width of bracing ply 42 is less than the width of bracing ply 41 (another work bracing ply), and preferably radially outward locates with respect to bracing ply 41.Preferably, the width of bracing ply 42 is than a little step of width of bracing ply 41, and this step can be about 10 to about 20mm.The knuckle of bracing ply 42 is between about 16 to 30 degree, preferably has orientation to the right, and more preferably arrives between about 25 degree about 19.Bracing ply 42 is preferably made by the steel wire identical with bracing ply 41, has the structure identical with bracing ply 41 directed but have the angle opposite with bracing ply 41.
Perhaps, the sawtooth bracing ply can be nonmetallic.An example of the non-metal cord that can adopt is aromatic poly amide, and it has 1670/3 structure, and has the density (terminal number of per inch) of 24EPI.Aromatic poly amide also can have 3300/3 structure, has 24 EPI.For the cord hungry area, the percentage elongation % during 10% breaking load is 0.98%.
Preferably, the sawtooth bracing ply forms by having the cord that limits following rigidity or hardness.Its rigidity and spring-like seemingly have relational expression F=KX, and wherein F is the power (N/inch) of unit band transverse width, and K is the rigidity (N/inch) that the power of every transverse width obtains divided by percentage elongation % longitudinally, and X is relative deformation rate % longitudinally.Therefore, power/transverse width and relative deformation rate % concern chart, rigidity equals slope of a curve.Cord and cord density (EPI) in the horizontal can be chosen to provide band rigidity be about 300000N/inch to about 800000N/inch, more preferably about 350000 to about 750000N/inch.Above-described cord characteristic adopts the cord that obtains from cured tire to record.
The height to width ratio of above-described tire can change.Height to width ratio is preferably about 50 to about 90.The net-gross ratio of tire can be for about 70 to about 90, and more preferably about 74 to about 86, and more preferably about 78 to 84.
The sawtooth belt structure
Fig. 3 shows tire assembly drum 48, and it has axial peripheral 44,45.In order to form modification sawtooth belt structure 39 on tire assembly drum, when these tire assembly drum 4 rotations when circumferentially being wound around tire assembly drum basically of the cord band 43 of gluing, described band 43 extends to another in the mode that replaces and rouses edge 45 from a bulging edge 44.
Fig. 4 A and 4B show tire assembly drum, and the periphery Cheng Ping's that wherein rouses from 0 radian (degree) to 2 π radians (360 degree).Fig. 4 A shows for being formed on first on drum and rouses the first pitch of the laps that turns the sawtooth bracing ply.The present invention also can be formed on casing or on tire, is not limited to be formed on tire assembly drum.For the purpose of example, initial initial point 50 is peripheral longitudinal plane of symmetrys in centre of drum, is in 0 radian, but can adopt any initial point position.At first band tilts with angle [alpha] with respect to the edge 45 of tire assembly drum.This is to relevant for the position of the about pi/2 radian that often turns 1 sawtooth.Following description shows the pattern that often turns 1 sawtooth wave, but is not limited to this situation, because the sawtooth wave that often turns can change as required.At the edge 45 of tire assembly drum, band has the first axial width or wave amplitude W1, and its center or middle peripheral plane from drum is measured.W1 preferably rouses near the maximum axial width the edge.Then, band can be chosen at the edge 44 wantonly and continues extended distance L in circumferentially (0 degree direction).As shown in Fig. 4 C, band is u turn preferably, does not have wedge angle, and preferably is cut into fillet at crossover position T1 and T2.As shown in Fig. 4 A, band is then towards relative bulging edge 44 tilt angle alpha.At about 3/2 π radian place, band has the second axial width or wave amplitude W2, and it is from the center planar survey, and is different from W1.W1 is preferably greater than W2.Therefore, band does not extend to bulging axial end portion 44 fully.Then, band can be randomly along basically circumferential (0 degree direction) orientation, extend circumferential distance L.At last, band towards the centre peripheral longitudinal plane of symmetry tilt angle alpha.Band is peripheral longitudinal plane of symmetry in the middle of about 2 π radian place's arrival.
Fig. 4 B shows the layout of the second band pitch of the laps.For the sake of clarity, removed the first pitch of the laps.The initial point 50 of the second pitch of the laps ' by the axial required amount of transposition (indexing), this transposition amount depends on the gap value between required continuous strip.For the purpose of example, strip width of the second band pitch of the laps transposition makes it against the first pitch of the laps.Originate in position 50 ', band is at first with respect to edge 45 tilt angle alpha of tire assembly drum.This is to relevant for the position of the about pi/2 radian that often turns 1 sawtooth.In this position, band has axial width or wave amplitude W2, and its center or middle peripheral plane from drum is measured.Then, band can be chosen at the edge 44 wantonly and continues extended distance L at circumferentially (about 0 degree).As shown in Fig. 4 C, band preferably in drum edge turning, does not have wedge angle, and preferably is cut into fillet at crossover position T1 and T2.As shown in Fig. 4 B and 4C, band is then from crossover position T2 towards relative bulging edge 44 tilt angle alpha.At about 3/2 π radian place, band has axial width or wave amplitude W1.Then, band can randomly along circumferential (about 0 degree) orientation, extend circumferential distance L.As shown in Fig. 4 C, band preferably in drum edge turning, does not have wedge angle, and preferably is cut into fillet at crossover position T1 and T2.At last, band towards the centre peripheral longitudinal plane of symmetry tilt angle alpha.Band is peripheral longitudinal plane of symmetry in the middle of about 2 π radian place's arrival.
Therefore, in the first band pitch of the laps, band across the first wave amplitude W1, then across the second wave amplitude W2, is then got back to initial point from initial point.W1 and W2 are in the opposite sense from longitudinal plane of symmetry, and W1 ≠ W2, preferred W1＞W2.Then, in the second band pitch of the laps, band across the first wave amplitude W2, then across the second wave amplitude W1, so can be got back to this initial point from the initial point of transposition.Therefore, the band pitch of the laps preferably against, but also can be overlapping or spaced apart.Band can be separately or with variable wave amplitude saw tooth pattern in combination in edge's circumferential offset.
The second embodiment of the present invention except following difference with above-described the same.Form the sawtooth belt structure if need N to transfer, turn for first N/2, each sawtooth pitch of the laps has the pattern of W1-W2.Turn for the second half (N/2), each sawtooth pitch of the laps has pattern W2-W1, and wherein W1 and W2 extend in the opposite direction from longitudinal plane of symmetry, and W1 ≠ W2, preferred W1＞W2.
The 3rd embodiment of the present invention is described below.Fig. 5 A shows the first band pitch of the laps, and it has the first wave amplitude W1, has in the opposite direction followed the second wave amplitude W2.Fig. 5 B shows the second band pitch of the laps, and wherein band has the first wave amplitude W2, has in the opposite direction followed the second wave amplitude W1.The second pitch of the laps is from the first required distance of pitch of the laps transposition, and therefore can be against (as shown in the figure), overlapping or spaced apart.
Fig. 5 C shows the 3rd band pitch of the laps, and wherein this band pitch of the laps is by from circumferentially displacement or the skew of before two band pitch of the laps, and the turning that makes edge is from the edge offset of before pitch of the laps.Just through pi/2 position departure distance C, band has the W1 wave amplitude, and just has the W2 wave amplitude through 3 pi/2 position bands.Fig. 5 D shows the 4th band pitch of the laps, and wherein band is also from first, second pitch of the laps circumferential offset, so that externally belt edges reduces the stripe size of bracing ply.As shown in the figure, just passed through pi/2 position departure distance D, band has the first wave amplitude W2, and departure distance D has the second wave amplitude W1.Departure distance D is different from departure distance C.Preferably, departure distance D is less than departure distance C.In order to form complete bracing ply, repeat described order, until form bracing ply.
Fig. 6 shows 1 sawtooth wave that often turns bracing ply in having the belt edges near zone of multilayer band.Fig. 7 shows the section drawing in the belt edges of each position A-A to E-E place's intercepting.As shown in the figure, the band lap is from about 1 layer of 4 layers of variation of maximum to the C-C of cross section.Fig. 8 shows the sawtooth bracing ply of prior art and arranges, wherein have nearly 6 layers overlapped.Therefore, belt structure of the present invention has reduced the quantity of overlapping layer, and overlapping layer is considered to reduce the tire durability.
Band is formed by the rubber fabric of one or more cord.The width of band can change, and can be for example that about 5-14mm is wide, and more preferably approximately 10-13mm is wide.The cord reinforcement can be formed by nylon, polyester, aromatic poly amide or steel.All above-mentioned illustrative embodiments are exemplified as every 1 bulging turning and have 1 sawtooth wave.The present invention can also every 1 bulging subcontracting draw together N sawtooth wave, and wherein N is 2.5 or larger.N can be also 〉=1 integer.For example, band can be arranged to forward at 2 whole drums gives birth to 1 set ripple, perhaps often turns 1/2 sawtooth wave.Above-described the present invention also can be against band, and is therefore very close to each other in the interval of continuous pitch of the laps.Perhaps, the strip width that continuous band pitch of the laps can overlapping about 1% to about 100%.Perhaps, continuous band pitch of the laps can be formed with clearance distance G betwixt.G can from about 1% to about 100% strip width change.
Utilizable another variable is the drum skew, and it is presented in Fig. 4 C best.The drum skew is the circumferential distance (degree of being measured as or radian) of the drum from strip edge point Y to an X.In other words, drum skew is half of the band circumferential distance that carries out u turn, the distance of namely measuring to the some X that completes turning near the some Y the edge.Drum is offset or the distance of turning can change, and effectively the edge has circumferentially been elongated in the edge if it increases, if perhaps it reduces causes sharper angle of turn.For example, the drum skew can change to about 30 degree from about 5 degree, more preferably changes to about 16 degree from about 10 degree.When the drum skew increased, the angle [alpha] of band also increased.Fig. 9 A-9C shows the band that is arranged on drum, and every drum turns 1 sawtooth wave.Fig. 9 A shows the drum skew of 6.75 degree, causes the angle [alpha] of 6.65 degree.Fig. 9 B shows the drum skew of 13.5 degree, causes the angle [alpha] of 7.22 degree.Fig. 9 C shows the drum skew of 27 degree, causes the angle [alpha] of 8.76 degree.As shown in whole views, when the drum departure distance increased, angle of turn elongated along the edge, and causes more level and smooth transition.The increase of drum skew also causes the angle [alpha] that increases a little.When drum skew increases, the lap of the layer of band is from 3.87 shown in 2.83 to Fig. 9 B shown in Fig. 9 A, and surpasses 6 in Fig. 9 C.
Utilizable another variable is lateral excursion.Lateral excursion is the axial distance from belt edges to the snare drum edge, and it measures with mm.By increasing lateral excursion, band more early begins to turn, and compares with 9B with Fig. 9 A, can produce inhomogeneous belt edges as shown in Figure 10 A and 10B.Figure 10 A-10C shows the lateral excursion of 8mm.Figure 10 A shows the drum skew of 6.75 degree, causes the angle [alpha] of 5.96 degree.Figure 10 B shows the drum skew of 13.5 degree, causes the angle [alpha] of 6.48 degree.Fig. 9 C shows the drum skew of 27 degree, causes the angle [alpha] of 7.18 degree.The effect that reduces lateral excursion causes bracing ply to have more even or more level and smooth edge, and causes the circumferential angle [alpha] in band to reduce a little.
In view of the description that provides here can be carried out modification to the present invention.Although for example purpose of the present invention shows some representative embodiments and details, it will be apparent to those skilled in the art that and to carry out various variations and modification and not deviate from scope of the present invention.Therefore, should be appreciated that and can the specific embodiment of describing be changed, these changes fall into the gamut that is limited by appending claims of the present invention.
Claims (10)
1. an air-inflation tyre, is characterized in that, described tire comprises: tyre surface, carcass, and be interposed in belt structure between described carcass and described tyre surface, wherein, described belt structure comprises a pair of work bracing ply, the angle of described work bracing ply changes to 30 degree from 15 degree, described belt structure also comprises the sawtooth belt structure of radially inwardly locating with respect to described work bracing ply, described sawtooth belt structure is formed by the two-layer at least cord of weave in, described two-layer at least cord is formed by the rubber strip of strengthening by one or more cords, wherein, the strap arrangements that forms described sawtooth belt structure becomes the first sawtooth pitch of the laps, described the first sawtooth pitch of the laps extends to the second horizontal belt edges with the sawtooth wavelength from the first horizontal belt edges, described sawtooth wavelength has the first wave amplitude W1, followed the second wave amplitude W2 in the direction opposite with described the first wave amplitude, the strap arrangements that forms described sawtooth belt structure becomes the second sawtooth pitch of the laps, described the second sawtooth pitch of the laps extends to the second horizontal belt edges with the sawtooth wavelength from the first horizontal belt edges, the sawtooth wavelength of described the second sawtooth pitch of the laps has the first wave amplitude W2, followed the second wave amplitude W1 in the direction opposite with described the first wave amplitude, wherein, W1 is not equal to W2.
2. air-inflation tyre according to claim 1 is characterized in that: each of described the first and second sawtooth pitch of the laps has turning at the first and second transverse edge places, wherein band in each edge along circumferential extended distance L.
3. air-inflation tyre according to claim 1, it is characterized in that: described sawtooth belt structure has the first belt edges in the first pitch of the laps, have the second belt edges in the second pitch of the laps, the mid point of described the first belt edges is from the mid point circumferential offset of described the second belt edges.
4. air-inflation tyre according to claim 1 is characterized in that: radially inner work bracing ply is that bracing ply is strengthened the widest bracing ply in structure.
5. air-inflation tyre according to claim 1, it is characterized in that: the width of described sawtooth bracing ply is the tread arc width degree of 0.5 to 0.75 times.
6. air-inflation tyre according to claim 1 is characterized in that: described sawtooth bracing ply is that the steel wire of autovulcanization tire always records by having, the cord greater than 0.45% percentage elongation % when 10% breaking load forms.
7. an air-inflation tyre, is characterized in that, described tire comprises: tyre surface, carcass, and be interposed in belt structure between described carcass and described tyre surface, wherein, described belt structure comprises a pair of work bracing ply, the angle of described work bracing ply changes to 30 degree from 15 degree, described belt structure also comprises the sawtooth belt structure of radially inwardly locating with respect to described work bracing ply, described sawtooth belt structure is formed by the two-layer at least cord of weave in, described two-layer at least cord is formed by the rubber strip of strengthening by one or more cords, wherein, described sawtooth belt structure forms: the first sawtooth pitch of the laps, described the first sawtooth pitch of the laps has the first wave amplitude Wmax in the first lateral ends, has the second wave amplitude Wmin in the second lateral ends, and Wmax＞Wmin, with the second sawtooth pitch of the laps, described the second sawtooth pitch of the laps has the first wave amplitude Wmin in the first lateral ends, has the second wave amplitude Wmax in the second lateral ends, and contiguous described the first sawtooth pitch of the laps of described the second sawtooth pitch of the laps is located.
8. air-inflation tyre according to claim 7, it is characterized in that: described sawtooth belt structure also comprises the 3rd sawtooth pitch of the laps, described the 3rd sawtooth pitch of the laps has the first wave amplitude Wmax in the first lateral ends, have the second wave amplitude Wmin in the second lateral ends, the first and second lateral ends of described the 3rd sawtooth pitch of the laps are respectively from the first and second lateral ends circumferential offset of described the first sawtooth pitch of the laps and described the second sawtooth pitch of the laps.
9. air-inflation tyre according to claim 7, it is characterized in that: described sawtooth belt structure also comprises the 4th sawtooth pitch of the laps, described the 4th sawtooth pitch of the laps has the first wave amplitude Wmin in the first lateral ends, have the second wave amplitude Wmax in the second lateral ends, the first and second lateral ends of described the 4th sawtooth pitch of the laps each respectively from the first and second lateral ends circumferential offset of described the first sawtooth pitch of the laps and described the second sawtooth pitch of the laps.
10. air-inflation tyre according to claim 7, it is characterized in that: the width of described sawtooth bracing ply is the tread arc width degree of 0.5 to 0.75 times.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US13916808P | 2008-12-19 | 2008-12-19 | |
| US61/139,168 | 2008-12-19 | ||
| US61/139168 | 2008-12-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101746222A CN101746222A (en) | 2010-06-23 |
| CN101746222B true CN101746222B (en) | 2013-05-08 |
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ID=42474079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200910260882 Expired - Fee Related CN101746222B (en) | 2008-12-19 | 2009-12-21 | Pneumatic tire |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN101746222B (en) |
| BR (1) | BRPI0904870A2 (en) |
| ZA (1) | ZA200909066B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3012370B1 (en) * | 2013-10-30 | 2017-04-14 | Michelin & Cie | TOP REINFORCEMENT FOR AIR TIRE |
| JP6253141B2 (en) * | 2013-11-06 | 2017-12-27 | 住友ゴム工業株式会社 | Pneumatic tire |
| US20210178820A1 (en) * | 2019-12-17 | 2021-06-17 | The Goodyear Tire & Rubber Company | Pneumatic tire |
| US20220185020A1 (en) * | 2020-12-14 | 2022-06-16 | The Goodyear Tire & Rubber Company | Truck tire |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1346006A (en) * | 1971-04-22 | 1974-02-06 | Continental Gummi Werke Ag | Pneumatic vehicle tyre |
| EP0501782A2 (en) * | 1991-02-28 | 1992-09-02 | Sumitomo Rubber Industries Limited | Pneumatic tyre |
| US6125900A (en) * | 1996-12-27 | 2000-10-03 | Compagnie Generale Des Establissements Michelin - Michelin & Cie | Tire for airplane with crown reinforcement including at least one twin zig-zag ply |
| CN1277582A (en) * | 1997-11-05 | 2000-12-20 | 米什兰集团总公司 | Tyre crown ply reinforcement |
-
2009
- 2009-12-10 BR BRPI0904870 patent/BRPI0904870A2/en active Search and Examination
- 2009-12-18 ZA ZA200909066A patent/ZA200909066B/en unknown
- 2009-12-21 CN CN 200910260882 patent/CN101746222B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1346006A (en) * | 1971-04-22 | 1974-02-06 | Continental Gummi Werke Ag | Pneumatic vehicle tyre |
| EP0501782A2 (en) * | 1991-02-28 | 1992-09-02 | Sumitomo Rubber Industries Limited | Pneumatic tyre |
| US6125900A (en) * | 1996-12-27 | 2000-10-03 | Compagnie Generale Des Establissements Michelin - Michelin & Cie | Tire for airplane with crown reinforcement including at least one twin zig-zag ply |
| CN1277582A (en) * | 1997-11-05 | 2000-12-20 | 米什兰集团总公司 | Tyre crown ply reinforcement |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2007-22424A 2007.02.01 |
Also Published As
| Publication number | Publication date |
|---|---|
| ZA200909066B (en) | 2010-09-29 |
| BRPI0904870A2 (en) | 2011-03-15 |
| CN101746222A (en) | 2010-06-23 |
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