CN101746220B - Pneumatic tire - Google Patents
Pneumatic tire Download PDFInfo
- Publication number
- CN101746220B CN101746220B CN2009102608805A CN200910260880A CN101746220B CN 101746220 B CN101746220 B CN 101746220B CN 2009102608805 A CN2009102608805 A CN 2009102608805A CN 200910260880 A CN200910260880 A CN 200910260880A CN 101746220 B CN101746220 B CN 101746220B
- Authority
- CN
- China
- Prior art keywords
- sawtooth
- laps
- pitch
- belt structure
- wave amplitude
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 230000002787 reinforcement Effects 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 238000004804 winding Methods 0.000 abstract description 4
- 239000011324 bead Substances 0.000 description 20
- 230000008859 change Effects 0.000 description 8
- 230000002093 peripheral effect Effects 0.000 description 8
- 230000017105 transposition Effects 0.000 description 5
- 239000004760 aramid Substances 0.000 description 4
- 229920003235 aromatic polyamide Polymers 0.000 description 4
- 239000004744 fabric Substances 0.000 description 4
- 239000003292 glue Substances 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000005728 strengthening Methods 0.000 description 3
- 241000254043 Melolonthinae Species 0.000 description 2
- 238000010276 construction Methods 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
- 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
- 238000005259 measurement Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Landscapes
- Tires In General (AREA)
- Tyre Moulding (AREA)
Abstract
A pneumatic tire is described. The tire comprises a tread, a carcass and a belt structure interposed between the carcass and the tread, the belt structure comprising a pair of working belts with the angle of the working belts ranging of from 15 to 30 degrees with respect to the circumferential direction of the tire. The belt structure further comprises a zigzag belt structure located radially between the working belts, wherein 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 is layed up in a first zigzag winding extending between a first lateral belt edge and a second lateral belt edge in an at least substantially zigzag or sine wavelength having a first amplitude (W1) in a first direction followed by a second amplitude (W2) in the opposite direction of the first amplitude, and wherein the strip is layed up in a second zigzag winding extending between the first lateral belt edge and the second lateral belt edge; in an at least substantially zigzag or sine 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, 2008,242 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 additional strengthening, more specifically, the present invention relates to be used for the radial-ply tyre that aircraft, truck and other heavy lifts are used.
Background technology
For example in truck tyre or the 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, near tire shoulder, does not reveal the limit belt edges, has greatly improved the tire durability.The shortcoming of sawtooth bracing ply is that there is overlapping layer near the edge tire shoulder.In some zones, there is too many layer, for example be generally 4 layers or multilayer more, even have 6 layers or multilayer more in some positions.Show that the minimizing of the overlapping band in the 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 the belt structure between said carcass and the said tyre surface.Said belt structure comprises a pair of work bracing ply, and the angle of said work bracing ply is spent about 30 degree from about 15 and changed, and said belt structure also comprises the sawtooth belt structure that is positioned between the said work bracing ply.Said sawtooth belt structure is formed by the two-layer at least cord of weave in; Said two-layer at least cord is formed by the rubber strip through one or many cord reinforcement; Wherein, The strap arrangements that forms said sawtooth belt structure becomes the first sawtooth pitch of the laps; The said first sawtooth pitch of the laps extends to the second horizontal belt edges with the sawtooth wavelength from the first horizontal belt edges, and said sawtooth wavelength has the first wave amplitude W1, is following the second wave amplitude W2 with the opposite direction of said first wave amplitude.Said sawtooth belt structure also is arranged to the second sawtooth pitch of the laps; The said 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, is following the second wave amplitude W1 with the opposite direction of said 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 the belt structure between said carcass and the said tyre surface.Said belt structure comprises a pair of work bracing ply, and the angle of said work bracing ply is spent about 30 degree from about 15 and changed, and said belt structure also comprises the sawtooth belt structure that is positioned between the said work bracing ply.Said sawtooth belt structure is formed by the two-layer at least cord of weave in; Said two-layer at least cord is formed by the rubber strip through one or many cord reinforcement; Wherein, said sawtooth belt structure forms: the first sawtooth pitch of the laps, and the said first sawtooth pitch of the laps has the first wave amplitude Wmax in first lateral ends; Have the second wave amplitude Wmin in second lateral ends, and Wmax＞Wmin; With the second sawtooth pitch of the laps, the said second sawtooth pitch of the laps has the first wave amplitude Wmin in first lateral ends, has the second wave amplitude Wmax in second lateral ends, the contiguous said first sawtooth pitch of the laps of said second sawtooth pitch of the laps location.
Description of drawings
Fig. 1 is the partial schematic section drawing of tire with prior art of sawtooth bracing ply;
Fig. 2 A shows the partial cross section of exemplary radial-ply tyre 10 of the present invention;
Fig. 2 B shows the partial cross section of second embodiment of 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 of tire assembly drum that is used for 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 it shows the only second commentaries on classics cord pattern (for the sake of clarity, having removed first changes) of sawtooth bracing ply;
Fig. 4 C is the close-up illustration that stands the band of u turn in belt edges;
Fig. 5 A is an example of tire assembly drum that is used for the circumferential arrangement of example purpose, and it shows the first turn over strap arrangements or first band pitch of the laps of forming the sawtooth bracing ply and arranges;
Fig. 5 B has shown the tire assembly drum of Fig. 5 A, and it shows the second bulging commentaries on classics, has shown the first and second band pitch of the laps layout that forms the sawtooth bracing ply;
Fig. 5 C has shown the tire assembly drum of Fig. 5 A, and it shows the 3rd bulging commentaries on classics, has shown first, second and the 3rd band pitch of the laps layout that form the sawtooth bracing ply;
Fig. 5 D has shown the tire assembly drum of Fig. 5 A, and it shows the 4th bulging commentaries on classics, has shown the first, second, third and the 4th band pitch of the laps layout that forms the sawtooth bracing ply;
Fig. 6 shows the sawtooth belt edges;
Fig. 7 shows the section drawing of sawtooth belt edges 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 deviation angle 6.75 spending 13.5 among Fig. 9 B and spend the degree of 27 among Fig. 9 C and change from Fig. 9 A; And
Figure 10 A-10C shows the sawtooth bracing ply, and it has the lateral excursion of 8mm, wherein rouses deviation angle 6.75 spending 13.5 among Figure 10 B and spend the degree of 27 among Figure 10 C and change from Figure 10 A.
The specific embodiment
Definition
Following definition is used for the present invention.
" triangle glue " is meant and is positioned at the radially unstrengthened elastic body of top of bead core.
" height to width ratio " of tire is meant that the section height (SH) of tire and the ratio of its section width (SW) multiply by 100%, are expressed as percentum.
" axially " is meant line parallel with the rotation axis of tire or direction with " axially ".
" tyre bead " is meant 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 glue, protect toe glue and chafer.
" diagonal tyre " is meant 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 with respect to the equatorial plane of tire diagonally.These cords extend with opposite angle in alternating layer.
" carcass " is meant the tire construction that still comprises tyre bead the sidewall rubber on belt structure, tyre surface, tread cushioning layer and carcass plies.
" circumferentially " be meant extend along the surface perimeter of annular tire tread with axial vertical line or direction.
" chafer " is meant the material fillet of placing around the tyre bead outside, is used to protect carcass plies not damaged by wheel rim, and the amount of deflection that on wheel rim, distributes, and the sealing tire.
" gas still " is meant the additional strengthening of the bead part that is arranged in tire.
" cord " is meant one in the reinforcement twisted wire, and the carcass plies in the tire is formed by cord.
" equatorial plane (EP) " is meant perpendicular to the rotation axis of tire and passes the plane at the center of its tyre surface.
" bead coil outsourcing cloth " is meant around the fabric of the reinforcement of bead core and the winding of triangle glue.
" tire seal " be meant tire protector with zero velocity and under normal load and pressure with the contact patch or the area of contact of plane contact.
" air-retaining liner " is meant inside face that forms tubeless tires and elastic body or the other materials layer that in tire, comprises expansion fluid.
" clean hair ratio " is meant that the value of the area of the tire protector rubber that tire India and China contact with the road surface divided by the area of the tyre surface of tire India and China, the latter comprise the noncontact part, for example groove.
" radial-ply tyre " is meant to have bracing ply or circumferential limited air-inflation tyre, and the cord that wherein from the tyre bead to the tyre bead, extends is arranged with the cord angle of 65-90 degree with respect to the equatorial plane of tire.
" section height " (SH) is meant from the nominal rim diameter to tire radial distance at the external diameter of its equatorial plane.
" pitch of the laps (winding) " is meant the pattern of the band that forms in first commentaries on classics of the band that centers on tire assembly drum, tire or casing.
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 portion of sidewall sections 24.Tire 10 is strengthened through 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 the bead core, and for example can twine 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 the 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 the tread arc width degree greatly.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 processed 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 from vulcanized tyre, obtains.For cord embryo hungry area, the percentage elongation % when 10% breaking load can be about 0.2% to about 0.27%.
Belt structure 40 also comprises sawtooth belt structure 39, and it is at work bracing ply 41, between 42.Sawtooth bracing ply 39 can adopt any saw tooth pattern that describes below to form.Preferably, each the drum commentaries on classics of sawtooth belt structure has 0.5 sawtooth wave, and perhaps each drum commentaries on classics has 1 sawtooth wave.The bracing ply width of sawtooth bracing ply be preferably the tread arc width degree about 70% to about 80%, even more preferably 73% to 77%.Sawtooth bracing ply 39 can be formed by the steel wire of high elongation rate structure, and for example its structure is 3 * 7 * 0.22HE, and EPI is about 14.For cord embryo hungry area, the high elongation rate steel wire can have the percentage elongation of about 1.7-2.05% when 10% breaking load.For cured tire, the high elongation rate steel wire can have the percentage elongation of about 0.45-0.68% when 10% breaking load.Another example that is suitable for cord structure of the present invention is that 18 steel wire is processed by having 4 * 7 * 0.26HE structure EPI.
Perhaps, the sawtooth bracing ply can be formed by aromatic poly amide, and this aromatic poly amide 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 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, concern that at power/transverse width and relative deformation rate % in the chart, rigidity equals slope of a curve.Can with cord and cord density (EPI) in the horizontal 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 clean hair of tire further is preferably about 78 to 84 than arriving approximately 86 for about 70 to about 90, more preferably about 74.
The sawtooth belt structure
Fig. 3 shows tire assembly drum 48, and it has axial peripheral 44,45.In order on tire assembly drum, to form modification sawtooth belt structure 39; When these tire assembly drum 4 rotations when circumferentially twining tire assembly drum basically of the cord band 43 of gluing, said band 43 extends to another with 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 first pitch of the laps that is formed on the first drum commentaries on classics sawtooth bracing ply on the drum.The present invention also can be formed on the casing or tire on, be not limited to be formed on the 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.Band at first tilts with angle [alpha] with respect to the edge 45 of tire assembly drum.This is relevant with position for about pi/2 radian of 1 sawtooth of revolution.Following description shows the pattern of 1 sawtooth wave of revolution, but is not limited to this situation, because the sawtooth wave of revolution can change as required.At the edge 45 of tire assembly drum, band has 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 on the edge of 44 wantonly and continues extended distance L in circumferentially (0 degree direction).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.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 second axial width or wave amplitude W2, and it is planar survey from the center, 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 places arrive.
Fig. 4 B shows the layout of the second band pitch of the laps.For the sake of clarity, removed first pitch of the laps.The initial point 50 of second pitch of the laps ' by the required amount of axial transposition (indexing), this transposition amount depends on the gap value between the required continuous strip.For the purpose of example, strip width of the second band pitch of the laps transposition makes it against 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 relevant with position for about pi/2 radian of 1 sawtooth of revolution.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 on the edge of 44 wantonly and continues extended distance L at circumferentially (about 0 degree).Shown in Fig. 4 C, band is preferably turned at the drum edge, does not have wedge angle, and preferably is cut into fillet at crossover position T1 and T2.Shown in Fig. 4 B and 4C, band 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 extend circumferential distance L randomly along circumferential (about 0 degree) orientation.Shown in Fig. 4 C, band is preferably turned at the drum edge, 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 places arrive.
Therefore, in the first band pitch of the laps, band across the first wave amplitude W1, across the second wave amplitude W2, is got back to initial point from initial point then then.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, across the second wave amplitude W1, so can be got back to this initial point from the initial point of transposition then.Therefore, the band pitch of the laps preferably against, but also can be overlapping or spaced apart.Band can separately or be located circumferential offset with variable wave amplitude saw tooth pattern with combining on the edge of.
Second embodiment of the present invention except following difference with above-described the same.N transfers and forms the sawtooth belt structure if desired, then changes for first N/2, and each sawtooth pitch of the laps has the pattern of W1-W2.Change for the second half (N/2), each sawtooth pitch of the laps has pattern W2-W1, and wherein W1 and W2 extend along opposite sense from longitudinal plane of symmetry, and W1 ≠ W2, preferably 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.Second pitch of the laps is from the required distance of the first 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, wherein this band pitch of the laps by from before circumferentially displacement or the skew of two band pitch of the laps, make edge turning from before the edge offset of pitch of the laps.Just through pi/2 offset 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 offset distance B, 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, up to forming bracing ply.
Fig. 6 shows 1 sawtooth wave of revolution bracing ply in having the belt edges near zone of multilayer band.Fig. 7 shows the section drawing of the belt edges of A-A to E-E place's intercepting in each position.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 for example be 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 per 1 drum commentaries on classics and have 1 sawtooth wave.The present invention can also per 1 bulging subcontracting draw together N sawtooth wave, and wherein N is 2.5 or bigger.N also can be >=1 integer.For example, band can be arranged such that at 2 whole drums and transmit living 1 set ripple, perhaps 1/2 sawtooth wave of revolution.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 among 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 the half the of the band circumferential distance that carries out u turn, promptly near the some Y the edge to accomplishing the distance that the some X that turns measures.The drum skew perhaps turns apart from can change, and effectively the edge has circumferentially been elongated on the edge if it increases, if perhaps it reduces then causes the more angle of turn of point.For example, the drum skew can be spent about 30 degree from about 5 and changed, and more preferably spends about 16 degree from about 10 and changes.When the drum skew increased, the angle [alpha] of band also increased.Fig. 9 A-9C shows the band that is arranged on the drum, and every drum changes 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.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 out-of-position also causes increasing angles α 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 in Fig. 9 C, surpasses 6.
Utilizable another variable is a lateral excursion.Lateral excursion is the axial distance from belt edges to the snare drum edge, and it measures with mm.Through increasing lateral excursion, band more early begins to turn, and compares with 9B with Fig. 9 A, shown in Figure 10 A and 10B, can produce uneven belt edges.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 evenly or more level and smooth edge, and causes the circumferential angle [alpha] in the 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 the object of the 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 do not deviate from scope of the present invention.Therefore, should be appreciated that and can the specific embodiment of describing be changed that these changes fall into the gamut that is limited appending claims of the present invention.
Claims (10)
1. an air-inflation tyre is characterized in that, said tire comprises: tyre surface; Carcass; And be interposed in the belt structure between said carcass and the said tyre surface; Wherein, said belt structure comprises a pair of work bracing ply, and the angle of said work bracing ply is spent about 30 degree from about 15 and changed; Said belt structure also is included in the sawtooth belt structure of radial location between the said work bracing ply; Said sawtooth belt structure is formed by the two-layer at least cord of weave in, and said two-layer at least cord is formed by the rubber strip through one or many cord reinforcement, wherein; The strap arrangements that forms said sawtooth belt structure becomes the first sawtooth pitch of the laps; The said first sawtooth pitch of the laps extends to the second horizontal belt edges with the sawtooth wavelength from the first horizontal belt edges, and said sawtooth wavelength has the first wave amplitude W1, is following the second wave amplitude W2 with the opposite direction of said first wave amplitude; Wherein, The first wave amplitude W1 is not equal to the second wave amplitude W2, and the strap arrangements that forms said sawtooth belt structure becomes the second sawtooth pitch of the laps, and the said 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 the said second sawtooth pitch of the laps has the first wave amplitude W2, is following the second wave amplitude W1 with the opposite direction of said first wave amplitude.
2. air-inflation tyre according to claim 1; It is characterized in that: each of the said first and second sawtooth pitch of the laps has turning at the first and second transverse edge places, and the band that wherein forms said sawtooth belt structure is at each circumferential extended distance L in edge edge.
3. air-inflation tyre according to claim 1; It is characterized in that: said sawtooth belt structure has first belt edges in first pitch of the laps; In second pitch of the laps, have second belt edges, the mid point of said first belt edges is from the mid point circumferential offset of said second belt edges.
4. air-inflation tyre according to claim 1 is characterized in that: radially inner work bracing ply is the wideest bracing ply in the belt structure.
5. air-inflation tyre according to claim 1 is characterized in that: the width of said sawtooth belt structure is about 0.5 to about 0.75 times tread arc width degree.
6. air-inflation tyre according to claim 1 is characterized in that: said sawtooth belt structure is that the steel wire of autovulcanization tire always records by having, the cord greater than 0.45% percentage elongation percentum when 10% breaking load forms.
7. an air-inflation tyre is characterized in that, said tire comprises: tyre surface; Carcass; And be interposed in the belt structure between said carcass and the said tyre surface; Wherein, said belt structure comprises a pair of work bracing ply, and the angle of said work bracing ply is spent about 30 degree from about 15 and changed; Said belt structure also comprises the sawtooth belt structure that is positioned between the said work bracing ply; Said sawtooth belt structure is formed by the two-layer at least cord of weave in, and said two-layer at least cord is formed by the rubber strip through one or many cord reinforcement, wherein; Said sawtooth belt structure forms: the first sawtooth pitch of the laps; The said first sawtooth pitch of the laps has the first wave amplitude Wmax in first lateral ends, has the second wave amplitude Wmin in second lateral ends, and Wmax＞Wmin; With the second sawtooth pitch of the laps, the said second sawtooth pitch of the laps has the first wave amplitude Wmin in first lateral ends, has the second wave amplitude Wmax in second lateral ends, the contiguous said first sawtooth pitch of the laps of said second sawtooth pitch of the laps location.
8. air-inflation tyre according to claim 7; It is characterized in that: said sawtooth belt structure also comprises the 3rd sawtooth pitch of the laps; Said the 3rd sawtooth pitch of the laps has the first wave amplitude Wmax in first lateral ends; Have the second wave amplitude Wmin in second lateral ends, first and second lateral ends of said the 3rd sawtooth pitch of the laps are respectively from the first and second lateral ends circumferential offset of said first sawtooth pitch of the laps and the said second sawtooth pitch of the laps.
9. air-inflation tyre according to claim 8; It is characterized in that: said sawtooth belt structure also comprises the 4th sawtooth pitch of the laps; Said the 4th sawtooth pitch of the laps has the first wave amplitude Wmin in first lateral ends; Have the second wave amplitude Wmax in second lateral ends, first and second lateral ends of said the 4th sawtooth pitch of the laps each respectively from the first and second lateral ends circumferential offset of said first sawtooth pitch of the laps and the said second sawtooth pitch of the laps.
10. air-inflation tyre according to claim 9 is characterized in that: repeat first to the 4th sawtooth pitch of the laps, up to forming belt structure.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US13924208P | 2008-12-19 | 2008-12-19 | |
| US61/139242 | 2008-12-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101746220A CN101746220A (en) | 2010-06-23 |
| CN101746220B true CN101746220B (en) | 2012-09-05 |
Family
ID=42474078
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102608805A Expired - Fee Related CN101746220B (en) | 2008-12-19 | 2009-12-21 | Pneumatic tire |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN101746220B (en) |
| BR (1) | BRPI0904869A2 (en) |
| ZA (1) | ZA200909067B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160288573A1 (en) * | 2015-03-31 | 2016-10-06 | The Goodyear Tire & Rubber Company | Continuous crown reinforcement for a pneumatic 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 |
| US6058997A (en) * | 1996-07-25 | 2000-05-09 | The Yokohama Rubber Co., Ltd. | Pneumatic radial tire having at least two zigzag belt layers |
| CN1458882A (en) * | 2001-03-16 | 2003-11-26 | 株式会社普利司通 | Pneumatic tire |
-
2009
- 2009-12-10 BR BRPI0904869 patent/BRPI0904869A2/en active Search and Examination
- 2009-12-18 ZA ZA200909067A patent/ZA200909067B/en unknown
- 2009-12-21 CN CN2009102608805A patent/CN101746220B/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 |
| US6058997A (en) * | 1996-07-25 | 2000-05-09 | The Yokohama Rubber Co., Ltd. | Pneumatic radial tire having at least two zigzag belt layers |
| CN1458882A (en) * | 2001-03-16 | 2003-11-26 | 株式会社普利司通 | Pneumatic tire |
Also Published As
| Publication number | Publication date |
|---|---|
| ZA200909067B (en) | 2010-09-29 |
| BRPI0904869A2 (en) | 2011-03-15 |
| CN101746220A (en) | 2010-06-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101746221B (en) | Pneumatic tire | |
| CN101746066A (en) | Method of making pneumatic tire | |
| EP0890453B1 (en) | Pneumatic tyre | |
| EP1356956B1 (en) | Belt package for super single truck tires | |
| CN100572107C (en) | Tire and manufacture method with improved high speed performance | |
| EP3296126B1 (en) | Pneumatic tire | |
| US8079392B2 (en) | Alternating straight/wavy reinforcement structure for pneumatic tire | |
| CN101815625A (en) | Tire having an improved bead structure | |
| EP2199106B1 (en) | Pneumatic tire | |
| CN100469606C (en) | Locked bead pneumatic tire with wrap-around toeguard | |
| CN101746222B (en) | Pneumatic tire | |
| CN102582367B (en) | Pneumatic tire and method of forming circumferential belt layer of the same | |
| US8215356B2 (en) | Tire with composite ply structure and envelope turnup | |
| US8919403B2 (en) | Pneumatic tire | |
| US20140373994A1 (en) | Pneumatic tire | |
| CN101746220B (en) | Pneumatic tire | |
| EP2199108B1 (en) | Pneumatic tire | |
| TW568846B (en) | A carcass structure for tyres for vehicle wheels, and a tyre comprising said carcass structure | |
| JP7153554B2 (en) | pneumatic tire | |
| US20160288573A1 (en) | Continuous crown reinforcement for a pneumatic tire | |
| JP7425283B2 (en) | pneumatic tires | |
| JP2011126304A (en) | Pneumatic tire | |
| JP2021041799A (en) | Pneumatic tire | |
| US20160096401A1 (en) | Pneumatic vehicle tire | |
| IL44219A (en) | Pneumatic tyres |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120905 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |