CN101767516B - Pneumatic tire - Google Patents
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- CN101767516B CN101767516B CN2009102256897A CN200910225689A CN101767516B CN 101767516 B CN101767516 B CN 101767516B CN 2009102256897 A CN2009102256897 A CN 2009102256897A CN 200910225689 A CN200910225689 A CN 200910225689A CN 101767516 B CN101767516 B CN 101767516B
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Abstract
The present invention provides a pneumatic tire capable of keeping a high running performance on road surface and improving running performance of ruts. The tread and shoulder zone (Ys) of a tire forms tire shoulder pattern block arrays arranged for separating the tire shoulder riffled blocks along the circumference of the tire by utilizing the outer transversal furrows. On the meridian sectional plane containing the tire axis, the tire shoulder riffled blocks have projecting parts which have a projecting upside wall surface and a projecting lower side wall surface, wherein, the projecting upside wall surface facing to the radial inner side of the tire by an angle (alpha ) from 35 DEG to 45DEG relative to the tire from the earth terminal of the tread and obliquely extending to the axial external side of the tire, and the projecting lower side wall surface facing from the projecting peak as the tire axial outer end point of the projecting upside wall to the radial inner side of the tire and obliquely extending to the axial external side of the tire and being connected with the external surface of the lateral part of tire. The outer transversal furrows having openings on the projecting lower side wall surface.
Description
Technical field
The present invention relates to be adapted at rally or the place cross-country race employed tires of contest such as (Dirt Trial), particularly a kind of air-inflation tyre of the road-holding property when improving rut and going.
Background technology
The tire that goes at rough road; Particularly in the employed air-inflation tyres of contest such as pulling force or place cross-country race; Adopt the pattern block decorative pattern widely in order to improve at the traction property of rough road, that is: fetus face is divided into a plurality of pattern blocks by the circumferential groove of circumferentially extending along tire with traverse furrow that it intersects.
On the other hand; The performance that the flat road surface at hard of this tire is gone (being sometimes referred to as high-quality road traveling performance) is also very important; Therefore, basic identical with tire, for example as shown in Figure 6 as tyre surface section and general car; Tw1 is set at about 80～86% of tire cross-section width Tw0 with tyre surface ground connection width, and the flare amount Cb of tyre surface is set at about 5.0mm～7.0mm and more smooth.Thus, when flat road surface is gone, can guarantee required ground connection width and uniform earth contact pressure, can bring into play higher high-quality road traveling performance.
Yet, when on rough road, going, can produce the road surface by the state of grinding (rut) because of going, so tire and road surface be except tyre surface t1 flatly the ground connection, tyre surface side t2 effectively contacts with the rut wall sometimes.Therefore, produce grinding b (representing), exist and significantly reduce the such problem of rideability with oblique line in the outside portion that is disposed at the outermost pattern block on tire shoulder a of tire axial.
Patent documentation 1: TOHKEMY 2001-113915 communique
Summary of the invention
Therefore; The object of the present invention is to provide a kind of air-inflation tyre; It is through being provided with protrusion at pattern block on tire shoulder; Can keep high-quality road traveling performance, and the rideability (the following rut rideability that is also referred to as sometimes) when improving rut and going, wherein this protrusion has the outstanding upside wall that extends to the tire axial outside with predetermined angular from the tyre surface ground terminal.
To achieve these goals; The invention of present techniques scheme 1 is a kind of air-inflation tyre; Through fetus face and than in the outer circumferential groove of circumferentially extending along tire near the tyre surface ground terminal more near the tread and shoulder zone in the tire axial outside, the outer traverse furrow that circumferential groove is extended to the tire axial outside from above-mentioned outside is set, above-mentioned tread and shoulder zone is formed the Pneumatic belt tire that pattern block on tire shoulder is listed as; Wherein this pattern block on tire shoulder is listed as along the tire circumferentially spaced a plurality of pattern block on tire shoulders is set; It is characterized in that in containing the radial cross section of tire axle, above-mentioned pattern block on tire shoulder has protrusion; Wherein this protrusion has: outstanding upside wall, its from above-mentioned tyre surface ground terminal with respect to tire radially with 35～45 ° angle [alpha] towards the tire radially inner side and to tire axial outside diagonally extending; Outstanding downside wall; The outstanding summit of its end points outside the tire axial of giving prominence to the upside wall is somebody's turn to do in conduct is towards the tire radially inner side and to the inboard diagonally extending of tire axial; And be connected with the outside face of sidewall portion, and above-mentioned outer traverse furrow is in the upper shed of above-mentioned outstanding downside wall.
In addition, the invention of technical scheme 2 is characterized in that, the overhang La of above-mentioned protrusion is 10～15mm, and wherein this overhang La is the tire axial distance between above-mentioned tyre surface ground terminal and the above-mentioned outstanding summit.
In addition, the invention of technical scheme 3 is characterized in that, the angle beta between the above-mentioned outstanding upside wall of above-mentioned protrusion and the above-mentioned outstanding downside wall is 110～130 °.
In addition; The invention of technical scheme 4; It is characterized in that; The formation of above-mentioned outer traverse furrow comprises: circumferential groove is to the traverse furrow principal part of the distolateral extension of tire ground connection, extend to the traverse furrow pair portion of above-mentioned outstanding downside wall from this traverse furrow principal part outside above-mentioned, and above-mentioned traverse furrow pair portion is above-mentioned traverse furrow principal part apart from 80～100% of the trench depth Hy1 of tyre surface apart from the trench depth Hy2 of above-mentioned outstanding upside wall.
In addition, the invention of technical scheme 5 is characterized in that, the projecting height Lb of above-mentioned protrusion is 15～30mm, and wherein this projecting height Lb is the tire radial height between above-mentioned tyre surface ground terminal and the above-mentioned outstanding summit.
Above-mentioned " tyre surface ground terminal " be meant, is being assembled in regular wheel rim and filling when having loaded regular load on the tire of the normal state of pressing in regular the position of the tire axial outermost end of connected to chassis tyre surface ground plane.Here, in this manual so long as not particular determination, the size of each one of tire etc. is the value of confirming under the above-mentioned normal state.
In addition; Above-mentioned " regular wheel rim " be meant comprise tire stipulate the wheel rim of this specification by each tire in according to the schematism of specification; For example if JATMA then is a standard rim; If TRA then is " a design wheel rim (Design Rim) ", perhaps if ETRTO then is " measuring wheel rim (Measuring Rim) ".Above-mentioned " pressing in regular " is meant the air pressure of stipulating above-mentioned specification by each tire; If JATMA then is high air pressure; If the maxim that TRA is then put down in writing for table " TIRE LOAD LIMITS AT VARIOUS COLD INFLATIONPRESSURES "; If ETRTO then is " inflation pressure (INFLATION PRESSURE) ", the situation of tire is next to be 180kPa yet use at car.Above-mentioned " regular load " is meant the load of stipulating above-mentioned specification by each tire; If JATMA then is a maximum load capability; If the maxim that TRA is then put down in writing for table " TIRE LOAD LIMITSAT VARIOUS COLD INFLATION PRESSURES ", if ETRTO then is " load-carrying capacity (LOAD CAPACITY) ".
As stated, the above-mentioned protrusion that is arranged at pattern block on tire shoulder has from the tyre surface ground terminal towards the tire radially inner side and to the outstanding upside wall of tire axial outside diagonally extending.Therefore, when flat road surface is gone above-mentioned protrusion not with road surface ground connection, thereby can prevent baneful influence to high-quality road traveling performance.
Relative therewith, above-mentioned outstanding upside wall radially tilts with 35～45 ° angle [alpha] with respect to tire.This angle [alpha] is approximate by the angle of grinding with the above-mentioned pattern block on tire shoulder that when rut goes, produces because of the friction with the rut wall.Therefore, state angle [alpha] through making more than the outstanding upside wall, protrusion and rut wall can be with the area of contact of broad ground connection smoothly when rut goes.And the outstanding downside wall of above-mentioned protrusion from outstanding summit towards the tire radially inner side and in tire axial tilt, and outer traverse furrow extends to this outstanding downside wall and carries out opening.Therefore, the rigidity of protrusion can be moderately reduced, tracing ability can be guaranteed the rut wall.And, through their mutual action, can suppress the grinding of pattern block on tire shoulder, and also can guarantee higher tractive force from the rut wall etc., thereby can improve traction property, can improve the rut rideability.
Description of drawings
Fig. 1 is the cutaway view of an expression airtyred embodiment of the present invention.
Fig. 2 is the birds-eye view of the fetus face of its tread contour of expression.
Fig. 3 is the partial perspective view that pattern block on tire shoulder is represented with protrusion.
Fig. 4 is the part sectional view that amplifies the expression protrusion.
Fig. 5 is the simple cutaway view of the state of expression air-inflation tyre of the present invention when on rut, going.
Fig. 6 is the airtyred cutaway view of representing in the past.
Description of reference numerals: 2... fetus face; 9o... outer circumferential groove; 10o... outer traverse furrow; 10o1... traverse furrow principal part; 10o2... traverse furrow pair portion; 11o... pattern block on tire shoulder; 11oR... pattern block on tire shoulder row; 15... protrusion; E... tyre surface ground terminal; Ps... outstanding summit; SU... outstanding upside wall; SL... outstanding downside wall; Ys... tread and shoulder zone.
The specific embodiment
Below, based on illustrated example an embodiment of the invention are described.Fig. 1 is the cutaway view of airtyred normal state of the present invention, and Fig. 2 is the birds-eye view of the fetus face of its tread contour of expression.
The air-inflation tyre 1 of this embodiment is to go at employed rough roads of contest such as rally or place cross-country races to use tire, and it possesses: carcass 6, and it arrives the bead core 5 of bead part 4 through sidewall portion 3 from fetus face 2; Bracing ply 7, it is configured in the tire radial outside of this carcass 6 and in the inside of fetus face 2.
Above-mentioned carcass 6 is made up of two pieces of carcass cord 6A in this example by body cord is for example constituted with the carcass cord more than a piece of 75 °～90 ° angle with respect to tire equator C.Adopt polyester cord in this example as body cord, yet can adopt organic fiber cords such as nylon, regenerated fiber, aromatic polyamide as required in addition.Above-mentioned carcass 6 has return portion 6b at the two ends of the main part 6a of the ring-type of crossing over 5,5 of above-mentioned bead cores, and return portion 6b turns back laterally from the tire axial inboard around above-mentioned bead core 5 and ended by card.And between this main part 6a and return portion 6b configuration by being the tyre bead triangle glue 8 that the solid rubber of triangular shape constitutes to the cross section that the tire radial outside extends from above-mentioned bead core 5, strengthen from bead part 4 to the sidewall portion 3.
Above-mentioned bracing ply 7 is formed by two pieces of bracing ply cord 7A, 7B in this example by tough belt cord is for example formed with at least two pieces of bracing ply cord 7A, 7B of 10～45 ° angle with respect to tire equator C.This bracing ply 7 improves the bracing ply rigidity through belt cord is intersected each other between cord, thereby strengthens almost all width of fetus face 2 securely.As belt cord is to adopt steel cord in this example, yet also can use elastomeric organic fiber cords such as aromatic polyamide, regenerated fiber as required.
In addition, above-mentioned air-inflation tyre 1 is with the tire axial width between tyre surface ground terminal E, E in this example, is that tyre surface ground connection width Tw1 is made as 80～86% of tire cross-section width Tw, and the flare amount Cb of tyre surface 2S is made as 5.0～7.0mm.Thus, required ground connection width and uniform earth contact pressure can be guaranteed on the flat road surface of hard, going, higher high-quality road traveling performance can be brought into play.
And; On above-mentioned fetus face 2; And than at the outer circumferential groove 9o that circumferentially extends along tire more on the tread and shoulder zone Ys near the tire axial outside near tyre surface ground terminal E; The setting outer traverse furrow 10o that circumferential groove 9o extends to the tire axial outside outside above-mentioned forms the pattern block on tire shoulder row 11oR that a plurality of pattern block on tire shoulders are provided with along the tire circumferentially spaced with above-mentioned tread and shoulder zone Ys thus.
Particularly; In this example; On fetus face 2, be provided with along many circumferential groove 9 of the continuous extension of tire axial and many traverse furrows 10 that intersect with this circumferential groove 9, thus, on this fetus face 2, form the pattern block decorative pattern that constitutes by the multi-pattern piece row 11R that pattern block 11 is set along circumferentially spaced.
More detailed; In this example, as shown in Figure 2, be formed with following Wu Tiaogou as above-mentioned circumferential groove 9; That is: be disposed at central circumferential groove 9i on the tire equator C, be configured in the middle circumferential groove 9m in the tire equator C outside, be configured in the above-mentioned outer circumferential groove 9o of tire equator C more lateral.In addition, be formed with as above-mentioned traverse furrow 10: be transverse to the interior traverse furrow 10i between above-mentioned circumferential groove 9i, the 9m; Be transverse to the middle traverse furrow 10m between above-mentioned circumferential groove 9m, the 9o; From the outer traverse furrow 10o of above-mentioned circumferential groove 9o to the extension of the tire axial outside.Thus; Zone between above-mentioned circumferential groove 9i, 9m is formed the interior pattern block row 11iR that interior pattern block 11i is provided with along the tire circumferentially spaced; In addition; Zone between above-mentioned circumferential groove 9m, 9o is formed middle the pattern block row 11mR that middle pattern block 11m is provided with along the tire circumferentially spaced, in addition, will be than the zone of outer circumferential groove 9o more lateral, be that tread and shoulder zone Ys forms outer pattern block, is the pattern block on tire shoulder row 11oR of pattern block on tire shoulder 11o along the setting of tire circumferentially spaced.
In this example, through above-mentioned circumferential groove 9 being formed the particularly wavy marginal element that increases tire axial of rectangle of zig-zag, thereby realize guaranteeing higher traction property.Here, the trench depth Hy of the trench depth Hg of circumferential groove 9 and traverse furrow 10 does not make particular determination, yet is fit to adopt common rough road to go with the trench depth of tire.For example trench depth Hg is 6.0～12.5mm, and trench depth Hy is 6.0～12.5mm, equates basically with trench depth Hg according to the preferred trench depth Hy of the viewpoint of traction property.In addition, symbol 12 is the lacing wires from bottom of trench protuberance among the figure, makes progress in week between adjacent pattern block and/or improves the pattern block rigidity between adjacent pattern block on the tire axial through being linked to.
Next, as Fig. 4 amplifies expression, on above-mentioned pattern block on tire shoulder 11o, be formed with and compare the protrusion 15 that protrudes in the tire axial outside with in the past contour shape J (representing) with long and short dash line.Particularly, above-mentioned protrusion 15 has: outstanding upside wall SU, its from above-mentioned tyre surface ground terminal E with respect to tire radially with 35～45 ° angle [alpha] towards the tire radially inner side and to tire axial outside diagonally extending; Outstanding downside wall SL, it is end points, i.e. outstanding summit Ps from the tire axial of this outstanding upside wall SU outside, towards the tire radially inner side and to tire axial inboard diagonally extending, and is connected with the outside face 3S of sidewall portion 3.
Above-mentioned outstanding upside wall SU is preferably formed the straight wire.In this " straight wire ", except that straight line, comprise that also radius of curvature is that 500mm is above big and near the dome arcuation of straight line or the curve of concave arc shape.Here, under the situation of above-mentioned curve, more preferably radius of curvature is more than the 1000mm, and special preferred curvature radius is ∞, promptly is essentially straight line.In addition, under the situation of curve, above-mentioned angle [alpha] is defined as through above-mentioned tyre surface ground terminal E and the imaginary line of outstanding summit Ps and the angle that tire radially forms.
At this, approximate by the angle of grinding when the above-mentioned angle [alpha] of 35～45 ° of scopes and rut go because of the pattern block on tire shoulder that produces with the rut wall friction.Therefore, tilt with the angle [alpha] of above-mentioned scope, just can when rut goes, make protrusion 15 with the area of contact of broad and rut wall ground connection smoothly through making outstanding upside wall SU.In addition, the outstanding downside wall SL of above-mentioned protrusion 15 from above-mentioned outstanding summit Ps towards the tire radially inner side and in tire axial tilt, and above-mentioned outer traverse furrow 10o extends to this outstanding downside wall SL and carries out opening.Therefore, the rigidity of protrusion 15 can be moderately reduced, thereby the tracing ability of 16 pairs of rut walls of protrusion can be guaranteed.
In addition,, also can guarantee higher tractive force, improve the rut rideability thereby can improve traction property from above-mentioned rut wall through their mutual action.And, can with the area of contact of broad smoothly with rut wall ground connection, therefore can suppress above-mentioned pattern block on tire shoulder, and can keep the rut rideability of above-mentioned raising for a long time by grinding.Here, when departing from 35～45 ° of scopes, then become local contact, make the tractive force that obtains from the rut wall become insufficient, and pattern block on tire shoulder is produced grinding and reduces durability with contacting of rut wall as if above-mentioned angle [alpha].In addition, outstanding downside wall SL radially extends towards the tire radially inner side from outstanding summit Ps, and perhaps outside tire axial during tilt, then the rigidity of protrusion 15 becomes excessive, thereby significantly reduces the tracing ability of 15 pairs of rut walls of protrusion.Consequently, the tractive force that obtains from the rut wall becomes insufficient, and causes that pattern block on tire shoulder is by grinding.Here, Fig. 5 is the simple cutaway view of the state of expression air-inflation tyre of the present invention when rut goes.
Then, in order to improve above-mentioned rut rideability, preferably, in above-mentioned protrusion 15, tire axial between above-mentioned tyre surface ground terminal E and above-mentioned outstanding summit Ps distance, be that overhang La is 15mm.As above-mentioned overhang La during less than 10mm, then protrusion 15 itself becomes too small, thereby can not bring into play the above-mentioned effect of this protrusion 15 fully.Otherwise under overhang La surpassed the situation of 15mm, yielding grade caused the reduction of pattern block rigidity because the root at pattern block on tire shoulder 11o becomes, so diminished from the tractive force of rut wall, thereby can not realize the rut rideability fully.In addition, might on pattern block on tire shoulder 11o, produce the damage that causes the damaged grade of pattern block.
In addition, in protrusion 15, the tire radial height between preferably above-mentioned tyre surface ground terminal E and the outstanding summit Ps, be that projecting height Lb is 15～30mm.This is because under the situation of having supposed the rut shape, is roughly the scope of above-mentioned 15～30mm from the scope of rut wall acquisition tractive force.Therefore, at above-mentioned projecting height Lb during, thereby then reduce to make tractive force become insufficient with the area of contact of rut wall less than 15mm.Even otherwise when projecting height Lb surpasses 30mm, do not find the rising of tractive force yet, and cause the unnecessary increase of tire quality.
In addition, in order to make the rigidity optimization of protrusion 15, the angle beta between preferred above-mentioned outstanding upside wall SU and the outstanding downside wall SL is 110～130 °.When if above-mentioned angle beta surpasses 130 °, because the rigidity of protrusion 15 is excessive, therefore can cause deterioration to the tracing ability of rut wall, make tractive force become insufficient from the rut wall.Otherwise,,, therefore can not increase tracing ability but reduced tractive force from the rut wall because the rigidity of protrusion 15 is too small if above-mentioned angle beta is when being lower than 110 °.In addition, above-mentioned outstanding downside wall SL and above-mentioned outstanding upside wall SU are preferably formed the straight wire equally.Here, outstanding summit Ps is preferably formed roughly edge shape in order to bring into play edge effect.Should except the edge, also comprise the little circular arc below the radius of curvature 0.5mm in " roughly edge shape " near the edge.
In addition, the outer end of above-mentioned outer traverse furrow 10o at above-mentioned outstanding downside wall SL place opening.The traverse furrow principal part 10o1 that promptly outer traverse furrow 10o is extended to tire ground terminal E side by circumferential groove outside above-mentioned and form from the traverse furrow pair 10o2 of portion that this traverse furrow principal part 10o1 extends to above-mentioned outstanding downside wall SL.At this moment, the preferred above-mentioned traverse furrow pair 10o2 of portion is above-mentioned traverse furrow principal part apart from 80～100% of the trench depth Hy1 of tyre surface apart from the trench depth Hy2 of above-mentioned outstanding upside wall SU.In addition; Outside above-mentioned traverse furrow 10o not when above-mentioned outstanding downside wall SL opening and above-mentioned trench depth Hy2 be 80% when following of trench depth Hy1; The flexibility of protrusion 15 is not enough thereby the tracing ability of rut wall is worsened; And, therefore can not bring into play tractive force fully owing to reduce friction effect to the rut wall.In addition, surpass at trench depth Hy2 under 100% the situation of trench depth Hy1, then make the raising effect of tractive force reaches capacity, also might produce and cause the damaged equivalent damage of pattern block except the rigidity that reduces pattern block on tire shoulder 11o.According to such viewpoint, the lower limit of trench depth Hy2 is preferably more than 90% of above-mentioned trench depth Hy1.The preferred above-mentioned trench depth Hy2 of the above-mentioned traverse furrow pair 10o2 of portion is constant; Yet also can increase or reduce gradually trench depth Hy2 gradually towards the tire axial outside; In this case; The maxim of above-mentioned trench depth Hy2 and the aviation value of minimum value are 80～100% of above-mentioned trench depth, however more preferably the maxim of above-mentioned trench depth Hy2, minimum value this as 80～100% of above-mentioned trench depth Hy1.
More than, special preferred implementation of the present invention is detailed, yet the present invention is not limited to graphic embodiment, also can be deformed into variety of way and implement.
Embodiment:
Studying tire size based on the specification of table 1 is that air-inflation tyre is used in the rally of 205/65R15; It constitutes structure shown in Figure 1 and has tread contour shown in Figure 2, and has tested the tractive property, turning performance of each testing tire, feels and anti-irregular wear performance with grabbing.Each tire is essentially same size except protrusion.
(1) tractive property, turning performance, sense with grabbing:
Testing tire is installed on whole tires of pulling force contest of wheel rim (7J * 15), interior pressure (210kPa) and free air capacity 2000cc with four-wheel drive vehicle; And on the hard earth test route of drying (one circle about 2.5km) five circles go; And the sense through test driver, to tractive property, turning performance, sense is that 5 minutes 10 point-scores are estimated in order to comparative example 1 with grabbing.Numerical value is superior more greatly more.
(2) wear resistance:
Using above-mentioned vehicle, through the state of visual investigation in the wearing and tearing (grinding) that above-mentioned earth route is up when having sailed 300km, and is that five minutes ten minutes method has been carried out indexing with comparative example 1.Numerical value is superior more greatly more.
Table 1:
| ? | Comparative example 1 | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 | Embodiment 7 | Embodiment 8 | Embodiment 9 | Comparative example 2 | Comparative example 3 |
| < pattern block on tire shoulder > | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? |
| Protrusion | Do not have | Have | Have | Have | Have | Have | Have | Have | Have | Have | Have | Have |
| Overhang La < mm > | ? | 5 | 12 | 12 | 15 | 10 | 25 | 15 | 15 | 15 | 15 | 15 |
| Projecting height Lb < mm > | ---- | 10 | 20 | 22 | 30 | 15 | 30 | 45 | 30 | 30 | 30 | 30 |
| The angle [alpha] (degree) of outstanding upside wall | ---- | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 35 | 45 | 20 | 55 |
| The angle beta (degree) of outstanding downside wall | ---- | 120 | 120 | 120 | 120 | 120 | 120 | 120 | 120 | 120 | 120 | 120 |
| Outer traverse furrow | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? |
| Trench depth is than (Hy2/Hy1) < % > | ---- | 95 | 60 | 95 | 95 | 90 | 95 | 95 | 90 | 100 | 80 | 95 |
| ? | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? |
| Tractive property | 5 | 6 | 6 | 8 | 9 | 7 | 9 | 9 | 7 | 8 | 6 | 4 |
| Turning performance | 5 | 5 | 5 | 8 | 7 | 7 | 3 | 4 | 8 | 7 | 5 | 3 |
| Sense with grabbing | 5 | 6 | 6 | 8 | 9 | 7 | 3 | 3 | 8 | 8 | 5 | 3 |
| Wear resistance | 5 | 5 | 5 | 8 | 9 | 7 | 9 | 9 | 7 | 9 | 5 | 5 |
As shown in table 1, the air-inflation tyre that can confirm embodiment has improved at earth ground-surface traction property and can be suppressed at the grinding in the pattern block on tire shoulder outside.
Claims (4)
1. air-inflation tyre; Be through on the fetus face and than circumferential groove is set from said outside on more near the tread and shoulder zone in the tire axial outside in the outer circumferential groove of circumferentially extending along tire near the tyre surface ground terminal to the outer traverse furrow of tire axial outside extension; Said tread and shoulder zone is formed the Pneumatic belt tire of pattern block on tire shoulder row; Wherein this pattern block on tire shoulder is listed as along the tire circumferentially spaced a plurality of pattern block on tire shoulders is set, and it is characterized in that
In containing the radial cross section of tire axle; Said pattern block on tire shoulder possesses protrusion; Wherein this protrusion has: outstanding upside wall, its from said tyre surface ground terminal with respect to tire radially with 35～45 ° angle [alpha] towards the tire radially inner side and to tire axial outside diagonally extending; Outstanding downside wall, its from as the outstanding summit of the outer end points of tire axial that should outstanding upside wall towards the tire radially inner side and to tire axial inboard diagonally extending, and be connected with the outside face of sidewall portion,
And said outer traverse furrow is in the upper shed of said outstanding downside wall, and
Angle beta between the said outstanding upside wall of said protrusion and the said outstanding downside wall is 110～130 °.
2. air-inflation tyre according to claim 1 is characterized in that,
The overhang La of said protrusion is 10～15mm, and wherein this overhang La is the tire axial distance between said tyre surface ground terminal and the said outstanding summit.
3. air-inflation tyre according to claim 1 and 2 is characterized in that,
Said outer traverse furrow comprises: circumferential groove is to the traverse furrow principal part of the distolateral extension of tire ground connection, extend to the traverse furrow pair portion of said outstanding downside wall from this traverse furrow principal part outside said, and said traverse furrow pair portion is said traverse furrow principal part apart from 80～100% of the trench depth Hy1 of tread surface apart from the trench depth Hy2 of said outstanding upside wall.
4. air-inflation tyre according to claim 1 and 2 is characterized in that,
The projecting height Lb of said protrusion is 15～30mm, and wherein this projecting height Lb is the tire radial height between said tyre surface ground terminal and the said outstanding summit.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008334101A JP4677028B2 (en) | 2008-12-26 | 2008-12-26 | Pneumatic tire |
| JP2008-334101 | 2008-12-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101767516A CN101767516A (en) | 2010-07-07 |
| CN101767516B true CN101767516B (en) | 2012-11-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102256897A Expired - Fee Related CN101767516B (en) | 2008-12-26 | 2009-11-27 | Pneumatic tire |
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| Country | Link |
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| JP (1) | JP4677028B2 (en) |
| CN (1) | CN101767516B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5333471B2 (en) | 2011-01-31 | 2013-11-06 | 横浜ゴム株式会社 | Pneumatic tire |
| JP5337199B2 (en) * | 2011-05-30 | 2013-11-06 | 住友ゴム工業株式会社 | Motorcycle tires for running on rough terrain |
| JP5985381B2 (en) | 2012-12-20 | 2016-09-06 | 株式会社ブリヂストン | Pneumatic tire |
| JP6466229B2 (en) * | 2015-04-01 | 2019-02-06 | 株式会社ブリヂストン | Pneumatic tire |
| CN106183647B (en) * | 2016-08-31 | 2018-05-22 | 赛轮金宇集团股份有限公司 | Ice and snow road tyres for passenger cars |
| JP6361763B1 (en) * | 2017-03-06 | 2018-07-25 | 横浜ゴム株式会社 | Pneumatic tire |
| JP2019104413A (en) * | 2017-12-13 | 2019-06-27 | Ｔｏｙｏ Ｔｉｒｅ株式会社 | Pneumatic tire |
| JP7298335B2 (en) * | 2019-06-25 | 2023-06-27 | 住友ゴム工業株式会社 | pneumatic tire |
| JP7558779B2 (en) * | 2020-12-04 | 2024-10-01 | Ｔｏｙｏ Ｔｉｒｅ株式会社 | Pneumatic tires |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1891501A (en) * | 2005-06-28 | 2007-01-10 | 韩国轮胎株式会社 | Pneumatic tire for heavy vehicle |
| EP1977910A1 (en) * | 2007-04-04 | 2008-10-08 | Sumitomo Rubber Industries, Ltd. | Off-road tire for motorcycle |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3811488A (en) * | 1972-08-21 | 1974-05-21 | Goodyear Tire & Rubber | Tire with an upper sidewall protector |
| JPS5225301A (en) * | 1975-08-14 | 1977-02-25 | Toyo Tire & Rubber Co Ltd | Penumatic tire |
| JPH0615282B2 (en) * | 1987-11-25 | 1994-03-02 | 株式会社ブリヂストン | Pneumatic radial tires for heavy loads |
| JPH04314602A (en) * | 1991-04-12 | 1992-11-05 | Sumitomo Rubber Ind Ltd | Tire for rough terrain running |
| JPH05286310A (en) * | 1992-04-14 | 1993-11-02 | Sumitomo Rubber Ind Ltd | Radial tire for heavy load |
| JPH0593909U (en) * | 1992-05-29 | 1993-12-21 | 住友ゴム工業株式会社 | Pneumatic tire for heavy load |
| JP3555782B2 (en) * | 1995-04-06 | 2004-08-18 | 株式会社ブリヂストン | Pneumatic radial tire |
| JP3391692B2 (en) * | 1998-04-03 | 2003-03-31 | 住友ゴム工業株式会社 | Pneumatic tire |
| JP3365744B2 (en) * | 1999-04-01 | 2003-01-14 | 住友ゴム工業株式会社 | Pneumatic tire |
| JP2001097006A (en) * | 1999-09-30 | 2001-04-10 | Bridgestone Corp | Pneumatic radial tire for heavy load |
-
2008
- 2008-12-26 JP JP2008334101A patent/JP4677028B2/en not_active Expired - Fee Related
-
2009
- 2009-11-27 CN CN2009102256897A patent/CN101767516B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1891501A (en) * | 2005-06-28 | 2007-01-10 | 韩国轮胎株式会社 | Pneumatic tire for heavy vehicle |
| EP1977910A1 (en) * | 2007-04-04 | 2008-10-08 | Sumitomo Rubber Industries, Ltd. | Off-road tire for motorcycle |
Non-Patent Citations (2)
| Title |
|---|
| JP特开平11-291718A 1999.10.26 |
| JP特开平5-286310A 1993.11.02 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4677028B2 (en) | 2011-04-27 |
| JP2010155503A (en) | 2010-07-15 |
| CN101767516A (en) | 2010-07-07 |
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