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CN105365495A - Pneumatic tire - Google Patents

Pneumatic tire Download PDF

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Publication number
CN105365495A
CN105365495A CN201510357627.7A CN201510357627A CN105365495A CN 105365495 A CN105365495 A CN 105365495A CN 201510357627 A CN201510357627 A CN 201510357627A CN 105365495 A CN105365495 A CN 105365495A
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China
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pattern block
tire
rill
shoulder
central
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Granted
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CN201510357627.7A
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CN105365495B (en
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井藤仁
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Sumitomo Rubber Industries Ltd
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Sumitomo Rubber Industries Ltd
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Abstract

The invention provides a pneumatic tire, which can be used on ice and is wear resistant. The tread (2) of the pneumatic tire (1) is provided with a pair of central main ditches (5), a central area (5), and tire shoulder areas (7). The central area (5) and each tire shoulder area (7) are provided multiple patterned blocks (12), which are defined by fine ditches (10) extending along the circumferential direction of the tire and cross ditches (11) extending along the axis of the tire. At least one of patterned blocks (12) is divided into patterned block small sheets (51) and patterned block large sheets (52) by a plurality of sipings (50); wherein the width of the patterned block large sheets (52) is larger than that of the patterned block small sheets (51). In each patterned block (12), the patterned block small sheets (51) and patterned block large sheets (52) are alternatively arranged along the circumferential direction of the tire.

Description

Air-inflation tyre
Technical field
The present invention relates to the air-inflation tyre taking into account performance and abrasion test on ice.
Background technology
In the past in order to improve performance on ice, proposed the air-inflation tyre being provided with tire sipe on pattern block.Such air-inflation tyre, by the road surface scraping effect (hereinafter referred to as " edge effect ") undertaken by the edge of tire sipe, improves the friction force on ice road.
But the rigidity being provided with the pattern block of tire sipe easily reduces, thus there is the low tendency of abrasion test.
Such as, following patent documentation 1 proposes following air-inflation tyre: the middle section between the central main groove that the both sides of tire equator extend with zig-zag, shoulder zone with the outside of central main groove, have the multiple pattern blocks marked off by the rill less than central main groove.This pattern block is divided into the pattern block sheet of fitfull shape by many tire sipes.Therefore also there is further room for improvement for taking into account performance and abrasion test on ice in the air-inflation tyre of patent documentation 1.
Patent documentation 1: Japanese Unexamined Patent Publication 2009-190558 publication
Summary of the invention
The present invention is in view of above actual conditions are made, and main purpose is to provide a kind of configuration by improving tire sipe, takes into account the air-inflation tyre of performance and abrasion test on ice.
Air-inflation tyre of the present invention, have at fetus face: circumferential continuously with a pair central main groove that zig-zag extends along tire in the both sides of tire equator, middle section described in a pair between central main groove, and the shoulder zone outside the tire axial of each described central main groove, describedly airtyredly to be characterised in that, be provided with by rill and multiple pattern blocks of marking off of traverse furrow of extending along tire axial at described middle section and each described shoulder zone, described rill extends continuously along tire circumference and has the furrow width less than described central main groove, at least one of described pattern block is divided into by many tire sipes and comprises: pattern block small pieces, the pattern block larger than described pattern block small pieces with the width of tire circumference is large stretch of, in each described pattern block, described pattern block small pieces and described pattern block sheet alternately arrange along tire circumference.
In air-inflation tyre of the present invention, preferred described pattern block comprises three the above pattern block small pieces.
In air-inflation tyre of the present invention, the length that preferred described pattern block has tire circumference is greater than the pentagon shape of the width of tire axial or the tread of hexagon shape.
In air-inflation tyre of the present invention, preferred described pattern block comprises the hexagonal pattern block of the tread with hexagon shape, described hexagonal pattern block has to a pair outstanding protuberance of the both sides of tire axial, and each front end of protuberance described in a pair is formed at same described pattern block small pieces each other.
In air-inflation tyre of the present invention, the ditch of preferred described traverse furrow is wider than the furrow width of described central main groove.
In air-inflation tyre of the present invention, preferred described rill comprises the central rill be arranged on described in a pair between central main groove, and described central rill comprises: the first central rill extended with linearity in tire equator and the second central rill of extending with zig-zag in two outsides of described first central rill.
In air-inflation tyre of the present invention, preferred described rill comprises the tire shoulder rill outside the tire axial being arranged on described central main groove, and described tire shoulder rill comprises: with zig-zag extend the first tire shoulder rill and outside the tire axial of described first tire shoulder rill with linearity extend the second tire shoulder rill.
In air-inflation tyre of the present invention, preferred described pattern block comprises: be arranged at the center running lug of described middle section and be arranged at the pattern block on tire shoulder of described shoulder zone, and described pattern block on tire shoulder comprises the width of tire axial first pattern block on tire shoulder larger than described center running lug.
In air-inflation tyre of the present invention, the width L1 of the tire circumference of preferred described pattern block sheet is 3.0 ~ 5.0 with the ratio L1/L2 of the width L2 of the tire circumference of described pattern block small pieces.
Air-inflation tyre of the present invention, has at fetus face: the shoulder zone outside the tire axial of a pair central main groove extended with zig-zag continuously along tire circumference in the both sides of tire equator, the middle section between a pair central main groove and each central main groove.The costa colpi of such central main groove can be swiped road surface effectively, thus improves performance on ice.
Be provided with by rill and multiple pattern blocks of marking off of traverse furrow of extending along tire axial at middle section and each shoulder zone, described rill extends continuously along tire circumference and has the furrow width less than central main groove.At least one of pattern block is divided into by many tire sipes and comprises: the pattern block that the width of pattern block small pieces and tire circumference is larger than above-mentioned pattern block small pieces is large stretch of.In each pattern block, pattern block small pieces and pattern block sheet alternately arrange along tire circumference.
When travelling on ice, such pattern block, the particularly edge of pattern block small pieces are swiped road surface effectively, thus improve performance on ice.And alternately arrange due to pattern block small pieces and pattern block sheet, so the large stretch of excessive distortion effectively suppressing pattern block small pieces of pattern block, thus suppress the irregular wear of pattern block.Therefore performance and abrasion test on ice is balancedly improved.
Accompanying drawing explanation
Fig. 1 is the expansion drawing of the airtyred fetus face of present embodiment.
Fig. 2 is the A-A cutaway view of Fig. 1.
Fig. 3 is the middle section of Fig. 1 and the enlarged drawing of shoulder zone.
Fig. 4 is the enlarged drawing of first pattern block on tire shoulder of Fig. 1.
Fig. 5 is the enlarged drawing of first center running lug of Fig. 1.
Fig. 6 is the expansion drawing of the airtyred fetus face of comparative example.
Description of reference numerals: 2... fetus face; 3... central main groove; 5... middle section; 7... shoulder zone; 10... rill; 11... traverse furrow; 12... pattern block; 50... tire sipe; 51... pattern block small pieces; 52... pattern block is large stretch of.
Detailed description of the invention
Below, based on accompanying drawing, an embodiment of the invention are described.
The fetus face 2 of the air-inflation tyre (following, sometimes referred to as " tire ") 1 of present embodiment shown in Figure 1.The air-inflation tyre 1 of present embodiment is such as suitable as the heavy duty pneumatic vehicle tire in winter.
As shown in Figure 1, be provided with at fetus face 2: the shoulder zone 7 outside the tire axial being arranged at middle section 5 between a pair central main groove 3 in two outsides of tire equator C, a pair central main groove 3 and above-mentioned each central main groove 3.
Central main groove 3 extends with zig-zag continuously along tire circumference.Such central main groove 3 also plays friction force when travelling on ice in tire circumference.
Central main groove 3, in the ditch extended continuously along tire circumference being arranged at fetus face 2, has maximum furrow width W1.The furrow width W1 of central main groove 3 is such as 2.5 ~ 5.0% of tyre surface ground connection width TW.Such central main groove 3 maintains the rigidity of fetus face 2, and balancedly takes into account performance and snow performance on ice.
Tyre surface ground connection width TW refers to the distance of the tire axial between tyre surface ground terminal Te, Te of the tire 1 under normal state.Normal state refers to and tyre rim is assembled in regular wheel rim (not shown) and fills regular interior pressure and non-loaded state.
Above-mentioned " regular wheel rim " is in the schematism of the specification comprising tire institute foundation, the wheel rim of this specification is determined for each tire, when JATMA be such as " standard rim ", be " DesignRim " be " MeasuringRim " when ETRTO when TRA.
Above-mentioned " regular interior pressure " is under the schematism of the specification comprising tire institute foundation, the air pressure of each specification is determined for each tire, be " most high air pressure " when JATMA, maxim when TRA described in table " TIRELOADLIMITSATVARIOUSCOLDINFLATIONPRESSURES ", when ETRTO is " INFLATIONPRESSURE ".
Above-mentioned " tyre surface ground terminal Te " refer to regular load is loaded to the tire 1 under above-mentioned normal state and with when the camber angle of 0 ° and planar ground by the earthing position outside tire axial.
Above-mentioned " regular load " is in the schematism of the specification comprising tire institute foundation, the load of each specification is determined for each tire, when JATMA be " maximum loadability ", maxim when TRA described in table " TIRELOADLIMITSATVARIOUSCOLDINFLATIONPRESSURES ", when ETRTO is " LOADCAPACITY ".
The A-A cutaway view of Fig. 1 shown in Figure 2.As shown in Figure 2, be such as 10 ~ 25mm when the ditch depth d1 of central main groove 3 heavy duty pneumatic vehicle tire in the winter time.
As shown in Figure 1, be provided with at middle section 5 and shoulder zone 7: extend continuously and the rill 10 with the furrow width less than central main groove 3 and the multiple pattern blocks 12 marked off by the traverse furrow 11 extended along tire axial along tire circumference.
Rill 10 such as comprises: be arranged on the central rill 15 between a pair central main groove 3,3 and be arranged on the tire shoulder rill 20 in outside of tire axial of central main groove 3.
The enlarged drawing of middle section 5 shown in Figure 3 and shoulder zone 7.As shown in Figure 3, central rill 15 such as comprises: the first central rill 16 extended with linearity and the second central rill 17 extended with zig-zag.First central rill 16 is such as arranged on tire equator C.Second central rill 17 is such as arranged at outside the tire axial of the first central rill 16.
Tire shoulder rill 20 such as comprises: with zig-zag extend the first tire shoulder rill 21 and outside the tire axial of the first tire shoulder rill 21 with linearity extend the second tire shoulder rill 22.
The furrow width W2 of above-mentioned each rill 10 is preferably more than 0.3 times of the furrow width W1 of central main groove 3, is more preferably more than 0.35 times, and is preferably less than 0.45 times, is more preferably less than 0.4 times.Such rill 10 can maintain the rigidity of middle section 5 and shoulder zone 7, and can play excellent edge effect.
As shown in Figure 2, the ditch depth d2 of each rill 10 is such as preferably 0.5 ~ 0.7 times of the ditch depth d1 of central main groove 3.Such rill 10 can maintain the rigidity of middle section 5 and shoulder zone 7 and improve abrasion test.
As shown in Figure 3, each traverse furrow 11 extends along tire axial with linearity.Traverse furrow 11 comprises: be arranged at the central transverse 25 of middle section 5 and be arranged at the tire-shoulder transverse groove 30 of shoulder zone 7.
Central transverse 25 comprises: the first central transverse 26 be communicated with between the first central rill 16 with the second central rill 17 and in the second central rill 17 and the second central transverse 27 be communicated with between central main groove 3.
Tire-shoulder transverse groove 30 comprises: the first tire-shoulder transverse groove 31 be communicated with between central main groove 3 with the first tire shoulder rill 21 and the second tire-shoulder transverse groove 32 be communicated with between the first tire shoulder rill 21 with the second tire shoulder rill 22.
The furrow width W3 of above-mentioned each traverse furrow 11 is such as preferably greater than the furrow width W1 of central main groove 3.The furrow width W3 of traverse furrow 11 is preferably more than 1.65 times of the furrow width W1 of central main groove 3, is more preferably more than 1.70 times, and is preferably less than 1.85 times, is more preferably less than 1.80 times.Such traverse furrow 11 can maintain the rigidity of middle section 5 and shoulder zone 7, and plays excellent snow post shearing force, thus improves snow performance.
As shown in Figure 2, the ditch depth d3 of each traverse furrow 11 is such as preferably 0.5 ~ 0.7 times of the ditch depth d1 of central main groove 3.The traverse furrow 11 of present embodiment such as has the ditch depth identical with rill 10.Such traverse furrow 11 maintains the rigidity of pattern block 12, and plays excellent snow post shearing force.
As shown in Figure 3, pattern block 12 comprises: be arranged at the center running lug 35 of middle section 5 and be arranged at the pattern block on tire shoulder 40 of shoulder zone 7.
Center running lug 35 such as comprises the first center running lug 36 and the second center running lug 37.
First center running lug 36 is such as divided by the first central rill 17 of central rill 16, second and the first central transverse 26 and forms.First center running lug 36 is such as the pentagon pattern block 45 of the tread with pentagon shape.Pentagon pattern block 45 such as has inner side to tire axial or protuberance 48 protruding outside.Protruding outside to tire axial of the protuberance 48 of the first center running lug 36 of present embodiment.
Second center running lug 37 is such as divided by the second central rill 17, central main groove 3 and the second central transverse 27 and forms.Second center running lug 37 is such as the hexagonal pattern block 46 of the tread with hexagon shape.The hexagonal pattern block 46 of present embodiment such as has the outstanding protuberance 48 in the both sides of a subtend tire axial.
Pattern block on tire shoulder 40 such as comprises the first pattern block on tire shoulder 41 and the second pattern block on tire shoulder 42.
First pattern block on tire shoulder 41 is such as divided by central main groove 3, first tire shoulder rill 21 and the first tire-shoulder transverse groove 31 and forms.First pattern block on tire shoulder 41 is such as the hexagonal pattern block 46 of the tread with hexagon shape.
The width of the tire axial of the first pattern block on tire shoulder 41 be such as preferably than the first center running lug 36 and the second center running lug 37 large.Improve the rigidity of shoulder zone 7 thus, thus improve at road-holding property on ice.
Second pattern block on tire shoulder 42 is such as divided by the first tire shoulder rill 21, second tire shoulder rill 22 and the second tire-shoulder transverse groove 32 and forms.Second pattern block on tire shoulder 42 is such as the pentagon pattern block 45 of the tread with pentagon shape.
Second pattern block on tire shoulder 42 such as preferably has the width of the tire axial less than the first pattern block on tire shoulder.The second pattern block on tire shoulder 42 like this improves nibbling energy performance effectively.
As the figure for illustration of pattern block 12, the enlarged drawing of the first pattern block on tire shoulder 41 of present embodiment shown in Figure 4.As shown in Figure 4, pattern block 12 is divided into by many tire sipes 50 and comprises: the pattern block sheet 52 that the width of pattern block small pieces 51 and tire circumference is larger than pattern block small pieces 51.In this manual, the grooving in fact without width of " tire sipe " to be such as finger widths be below 1mm degree, to distinguish with the ditch of draining.
In each pattern block 12, pattern block small pieces 51 and pattern block sheet 52 alternately arrange along tire circumference.When travelling on ice, swiping road surface effectively in the edge of the pattern block small pieces 51 of the relatively easy distortion of such pattern block 12, thus improves performance on ice.On the other hand, be relatively difficult to the pattern block large stretch of 52 that is out of shape contact with road surface on ice and can prevent ground contact area from reducing.And alternately arrange due to pattern block small pieces 51 and pattern block sheet 52, so pattern block sheet 52 suppresses the excessive distortion of pattern block small pieces 51 effectively, thus the irregular wear of suppression pattern block 12.Therefore performance and abrasion test on ice is balancedly improved.In order to improve above-mentioned effect further, the length L4 of the tire circumference of preferred pattern block 12 is greater than the width W 4 of tire axial.
Preferred pattern block small pieces 51 are relative with the pattern block sheet 52 of adjacent pattern block across rill 10.In other words, pattern block small pieces 51 are preferably configured to across rill 10 not transversely arranged with the pattern block small pieces of other pattern blocks.In the present embodiment, the whole region of the end 51e of pattern block small pieces 51 is relative with pattern block sheet 52.Such embodiment, when cornering, when pattern block small pieces 51 are out of shape along tire axial significantly, the pattern block sheet 52 that rigidity is larger can support pattern block small pieces 51 effectively, and then improves the abrasion test of pattern block small pieces 51.
As shown in Figure 1, in the present embodiment, the end 51e of pattern block small pieces 51 is all relative with the pattern block of adjacent pattern block large stretch of 52 or traverse furrow 11.The pattern block small pieces 51 relative with above-mentioned pattern block sheet 52 can obtain above-mentioned effect.The pattern block small pieces 51 relative with traverse furrow 11 form the maximum width of pattern block, and distortion when turning is less, does not therefore reduce abrasion test.
As shown in Figure 4, when hexagonal pattern block 46, each front end 49 of a pair protuberance 48 is preferably formed at same pattern block small pieces 51 each other.In the present embodiment, each front end 49 of a pair protuberance 48 is formed at the pattern block small pieces 51 of the central portion of the tire circumference of pattern block 12.Effectively suppress thus with the defect of the front end 49 of protuberance 48 pattern block that is starting point.
As an example of pentagon pattern block 45, the enlarged drawing of the first center running lug 36 shown in Figure 5.As shown in Figure 5, when pentagon pattern block 45, the front end 49 being arranged at the protuberance 48 of either party of tire axial is preferably formed in pattern block small pieces 51.In the present embodiment, the front end 49 of protuberance 48 is formed at the pattern block small pieces 51 of the central portion of the tire circumference of pattern block.
The ora terminalis 54 forming the protuberance 48 of pentagon pattern block 45 or hexagonal pattern block 46 is preferably more than 5 ° relative to the angle θ 1 of tire circumference, is more preferably more than 7 °, and is preferably less than 15 °, is more preferably less than 13 °.Such protuberance 48 balancedly plays edge effect in tire circumference and tire axial.
As shown in Figure 4, pattern block 12 such as preferably includes more than three pattern block small pieces 51.The pattern block 12 of present embodiment such as comprises: a pair second pattern block small pieces 57 of the both sides of the first pattern block small pieces 56 forming the maximum width of the tire axial of pattern block 12 and the tire circumference being arranged at the first pattern block small pieces 56.And the pattern block 12 of present embodiment such as comprises: a pair first pattern block sheets 58 between the first pattern block small pieces 56 and the second pattern block small pieces 57 and a pair second pattern block sheets 59 between the second pattern block small pieces 57 and traverse furrow 11.Thus, each pattern block small pieces 51, by large stretch of 52 clampings of the pattern block of the both sides of tire circumference, therefore suppress the distortion of tire circumference further.Therefore each pattern block small pieces 51 can with larger power scraping road surface.
The width L1 of the tire circumference of pattern block sheet 52, be preferably more than 3.0 with the ratio L1/L2 of the width L2 of the tire circumference of pattern block small pieces 51, be more preferably more than 3.5, and be preferably less than 5.0, be more preferably less than 4.5.Balancedly improve performance and abrasion test on ice thus.
As shown in Figure 1, as the heavy duty pneumatic vehicle tire in the winter of present embodiment, the land ratio Lr of fetus face 2 is preferably more than 68%, is more preferably more than 70%, and is preferably less than 78%, is more preferably less than 75%.Take into account performance and abrasion test on ice thus.In this manual, " land ratio " refers between tyre surface ground terminal Te, Te, and actual total ground contact area Sb is relative to the ratio Sb/Sa of the whole area Sa by the imaginary ground plane after each ditch and the whole landfill of tire sipe.
Each pattern block 12 is arranged along tire circumference interval respectively, and forms pattern block row.The tire pattern block number N of a week of each pattern block row is preferably more than 45, is more preferably more than 50, and is preferably less than 65, be more preferably less than 60.Maintain the rigidity of each pattern block 12 thus, and obtain excellent edge effect.
The rubber hardness Ht forming the tread-rubber of fetus face 2 is preferably more than 60 °, is more preferably more than 63 °, and is preferably less than 70 °, is more preferably less than 67 °.Such tread-rubber takes into account performance and abrasion test on ice.In this manual, above-mentioned " rubber hardness " is according to JIS-K6253, under the environment of 23 DEG C, measure fixed hardness with A type hardness tester.
The summation of marginal element's amount that is the summation Σ CE of center edge component amount that are arranged at the tire sipe of middle section 5 are preferably more than 30000mm, are more preferably more than 33000mm, and are preferably below 40000mm, be more preferably below 37000mm.Suppress the irregular wear of middle section 5 thus and play excellent performance on ice.Marginal element's amount of tire sipe refers to the summation of the length at the edge of tire sipe both sides.
The summation Σ SE of the summation that is tire shoulder marginal element amount that are arranged at marginal element's amount of the tire sipe of the shoulder zone 7 of both sides is preferably more than 30000mm, is more preferably more than 33000mm, and is preferably below 40000mm, be more preferably below 37000mm.Suppress the irregular wear of shoulder zone 7 thus and play excellent performance on ice.
Above, particularly preferred embodiment of the present invention is described in detail, but the present invention is not limited to graphic embodiment, but various mode can be deformed into implement.
Embodiment
Based on the specification of table 1, the motif and the heavy duty pneumatic vehicle tire being of a size of 11R22.5 with Fig. 1 are manufactured experimently.As comparative example 1, as shown in Figure 6, the tire of the width equal (unallocated pattern block small pieces and pattern block sheet) of the tire circumference of each pattern block sheet has been manufactured experimently.The performance on ice of each testing tire, snow performance and abrasion test are tested.The common specification of each testing tire, test method are as follows.
Wheel rim is installed: 8.25 × 22.5
Inner pressure of tire: 900kPa
Testing vehicle: the truck of load-carrying 10t, at the goods of the 5t of platform central authorities loading standard carrying capacity
Tire installation location: all wheels
< is performance > on ice
By chaufeur sense organ, the rideability on ice of the testing vehicle being provided with each testing tire is evaluated.The scoring that result is 100 with comparative example 1 represents, the larger expression of numerical value on ice performance is better.
< snow performance >
By the sense organ of chaufeur, to be provided with each testing tire testing vehicle snow on rideability evaluate.The scoring that result is 100 with comparative example 1 represents, the larger expression snow performance of numerical value is better.
< abrasion test >
The abrasion loss of the first center running lug after dry pavement travels certain distance is measured.Result is the inverse of above-mentioned abrasion loss, and represents in order to the index that the value of comparative example 1 is 100.The larger expression abrasion test of numerical value is better.
In Table 1 test result is shown.
Table 1
As according to table 1 clear and definite, the air-inflation tyre of embodiment can be confirmed, balancedly take into account performance and abrasion test on ice.

Claims (9)

1. an air-inflation tyre, have at fetus face: the shoulder zone outside the middle section between a pair central main groove extended with zig-zag continuously along tire circumference in the both sides of tire equator, central main groove described in a pair and the tire axial of each described central main groove, describedly airtyredly to be characterised in that
Be provided with by rill and multiple pattern blocks of marking off of traverse furrow of extending along tire axial at described middle section and each described shoulder zone, described rill extends continuously along tire circumference and has the furrow width less than described central main groove,
At least one of described pattern block is divided into by many tire sipes and comprises: the pattern block that the width of pattern block small pieces and tire circumference is larger than described pattern block small pieces is large stretch of,
In each described pattern block, described pattern block small pieces and described pattern block sheet alternately arrange along tire circumference.
2. air-inflation tyre according to claim 1, is characterized in that,
Described pattern block comprises three the above pattern block small pieces.
3. air-inflation tyre according to claim 1 and 2, is characterized in that,
The length that described pattern block has tire circumference is greater than the pentagon shape of the width of tire axial or the tread of hexagon shape.
4. the air-inflation tyre according to any one of claims 1 to 3, is characterized in that,
Described pattern block comprises the hexagonal pattern block of the tread with hexagon shape,
Described hexagonal pattern block has to a pair outstanding protuberance of the both sides of tire axial,
Each front end of protuberance described in a pair is formed at same described pattern block small pieces each other.
5. the air-inflation tyre according to any one of Claims 1 to 4, is characterized in that,
The ditch of described traverse furrow is wider than the furrow width of described central main groove.
6. the air-inflation tyre according to any one of Claims 1 to 5, is characterized in that,
Described rill comprises the central rill be arranged on described in a pair between central main groove,
Described central rill comprises: the first central rill extended with linearity in tire equator and the second central rill of extending with zig-zag in two outsides of described first central rill.
7. the air-inflation tyre according to any one of claim 1 ~ 6, is characterized in that,
Described rill comprises the tire shoulder rill outside the tire axial being arranged on described central main groove,
Described tire shoulder rill comprises: with zig-zag extend the first tire shoulder rill and outside the tire axial of described first tire shoulder rill with linearity extend the second tire shoulder rill.
8. the air-inflation tyre according to any one of claim 1 ~ 7, is characterized in that,
Described pattern block comprises: be arranged at the center running lug of described middle section and be arranged at the pattern block on tire shoulder of described shoulder zone,
Described pattern block on tire shoulder comprises the width of tire axial first pattern block on tire shoulder larger than described center running lug.
9. the air-inflation tyre according to any one of claim 1 ~ 8, is characterized in that,
The width L1 of the tire circumference of described pattern block sheet is 3.0 ~ 5.0 with the ratio L1/L2 of the width L2 of the tire circumference of described pattern block small pieces.
CN201510357627.7A 2014-08-07 2015-06-25 Pneumatic tire Active CN105365495B (en)

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CN110382258A (en) * 2017-02-14 2019-10-25 横滨橡胶株式会社 Pneumatic tire
CN113226800A (en) * 2018-12-27 2021-08-06 株式会社普利司通 Tyre for vehicle wheels
CN114746287A (en) * 2019-11-29 2022-07-12 株式会社普利司通 Tyre

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* Cited by examiner, † Cited by third party
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CN110382258A (en) * 2017-02-14 2019-10-25 横滨橡胶株式会社 Pneumatic tire
CN110382258B (en) * 2017-02-14 2022-09-02 横滨橡胶株式会社 Pneumatic tire
CN113226800A (en) * 2018-12-27 2021-08-06 株式会社普利司通 Tyre for vehicle wheels
CN114746287A (en) * 2019-11-29 2022-07-12 株式会社普利司通 Tyre
CN114746287B (en) * 2019-11-29 2023-09-26 株式会社普利司通 Tire with a tire body

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