CN100581849C - Inflatable tyre - Google Patents
Inflatable tyre Download PDFInfo
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- CN100581849C CN100581849C CN200710102275A CN200710102275A CN100581849C CN 100581849 C CN100581849 C CN 100581849C CN 200710102275 A CN200710102275 A CN 200710102275A CN 200710102275 A CN200710102275 A CN 200710102275A CN 100581849 C CN100581849 C CN 100581849C
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- lateral mass
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- tire
- stria
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- 210000003754 fetus Anatomy 0.000 claims description 9
- 238000007373 indentation Methods 0.000 claims description 4
- 230000033001 locomotion Effects 0.000 description 16
- 230000000694 effects Effects 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 7
- 238000012360 testing method Methods 0.000 description 6
- 238000005299 abrasion Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 230000000740 bleeding effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000001815 facial effect Effects 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000002889 sympathetic effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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Abstract
The invention provides a pneumatic tire, which reduces noise of tire pattern and keeps high travel performances. The pneumatic tire comprises a consecutive plane part in centre of the tire surface and module part composed of plenty of modules. The modules are divided by two main grooves of Z shape on both side of the tire and plenty of pattern grooves between the two main grooves, wherein, narrow grooves whose inclination angle is 5-12 DEG and width is 2%-4% of grounding width divides the modules to centre module parts and side module parts, and the centre module parts and side module parts are opposite to short edge of the pattern grooves and stagger to the narrow grooves.
Description
Technical field
The present invention relates to be suitable for the air-inflation tyre that land locomotion is used, more specifically to keeping the air-inflation tyre that the land locomotion performance can reduce the tread contour noise again.
Background technology
For the air-inflation tyre that is installed on the four-wheel drive vehicle, required functional by the land locomotion of mud ground rideability, snowfield rideability, sand ground rideability representative in the past.This air-inflation tyre, be provided with to such an extent that can guarantee mud ground rideability, snowfield rideability more greatly by groove area ratio with fetus face, be provided with to such an extent that can guarantee the sand ground rideability more greatly by piece minister degree, but if be provided with the groove area ratio to such an extent that will become more greatly and make the particularly major cause of tread contour noise penalty (for example with reference to patent documentation 1) of noise performance tire circumferential direction.
That is to say that when increasing the groove area ratio, the impulsive sound during piece portion ground connection increases, and flow out bleeding of producing via pattern groove and also can increase by the gas column sympathetic response in its major trough that motivates because of being compressed in air between fetus face and the road surface.Therefore, wanting to keep the land locomotion performance, to reduce the tread contour noise again be extremely difficult.
Patent documentation 1: Japanese kokai publication hei 11-245625 communique
Summary of the invention
The object of the present invention is to provide and a kind ofly can keep the air-inflation tyre that the land locomotion performance can reduce the tread contour noise again.
In order to reach above-mentioned purpose, air-inflation tyre of the present invention, it has on the middle position of fetus face along the flat portion that tire circumferential direction extends continuously, possess the piece portion row that constitute by a plurality of portions simultaneously, described portion is two major troughs that all are indentation and extended along tire circumferential direction by the both sides in this flat portion, and link that multi-pattern groove between these major troughs marks off, it is characterized in that, green phase is that 5 °～12 ° and groove width are that 2%～4% stria of ground connection width partly is slit into the outer lateral mass portion of partial sum of central lateral mass portion part with each pieces of above-mentioned portion's row for the angle of inclination of tire circumferential direction, and the bearing of trend that these central lateral mass portion's parts and outer lateral mass portion partly are configured to towards the piece portion edge of weak point in the face of above-mentioned pattern groove above-mentioned stria is staggered relatively.
In the present invention, green phase for tire circumferential direction a little the bevelled stria will be positioned at the both sides of flat portion of the middle position of fetus face, each piece that piece portion row on the position of vibration promptly take place easily partly is slit into the outer lateral mass portion of partial sum of central lateral mass portion part, and outer lateral mass portion partly is configured to stagger relatively along the bearing of trend of stria with central lateral mass portion partial sum, can reduce the impulsive sound that these outer lateral mass portion of central lateral mass portion partial sum parts are produced like this when ground connection, and time (the タ イ ミ Application グ) difference that impulsive sound is taken place, therefore can reduce the noise that causes because of impulsive sound.Particularly, outside one group central lateral mass portion partial sum during lateral mass portion partial earthing, first connected to chassis part after the connected to chassis part, the length on piece portion limit diminishes, so can reduce impulsive sound effectively.On the other hand, be provided with the groove area ratio of fetus face enough big, so just can have given play to good land locomotion performance by the major trough with meander-shaped, pattern groove, stria.
In the present invention, preferably with the amount of staggering relatively of the outer lateral mass portion of central lateral mass portion partial sum part, be made as towards 20%～40% of the length on the piece portion limit of stria.Thus, can suppress inclined to one side worn-down and produce, the noise that can obtain being produced by the dispersion of impulsive sound again reduces effect.
Preferably with in the outer lateral mass portion of the central lateral mass portion partial sum part, towards the length L s on short piece portion limit of pattern groove, be made as towards 65%～85% of the length L l on the long piece portion limit of pattern groove.Thus, can suppress inclined to one side worn-down and produce, the noise that can obtain being produced by the minimizing of impulsive sound again reduces effect.
In addition, preferably outside central lateral mass portion partial sum, be respectively arranged with at least three tire sipes in the lateral mass portion part.Can improve snowfield rideability, rideability waterborne by adding tire sipe.
And then preferably central lateral mass portion part and outer lateral mass portion partly being set at the intermediate point in the stria is that the center is in point-symmetric shape.Outside central lateral mass portion partial sum, having adopted under the situation of point-symmetric shape on the lateral mass portion part like this, no matter how the hand of rotation of tire can both obtain the effect of improving of noise performance.
Groove width with stria is made as 2%～4% of ground connection width in the present invention, but also preferred groove width with major trough is made as 4.5%～8.0% of ground connection width, the groove width of pattern groove is made as 4.0%～10.0% of ground connection width, the groove width of tire sipe is made as below the 1.5mm.At this, the ground connection width means, under the condition determination of the determined static weight radius of specification that is applicable to tire by JATMA, TRA or ETRTO etc., when making tread of tyre facial planes ground ground connection, the axial width of tire of tire plane earth connected to chassis part.
Description of drawings
Fig. 1 is the expansion drawing of the airtyred tread contour that is made of embodiments of the present invention of expression.
Fig. 2 is the birds-eye view of the piece portion row between the major trough that amplifies in the tread contour of presentation graphs 1.
The specific embodiment
Below, explain formation of the present invention with reference to accompanying drawing.
Fig. 1 is the figure of the airtyred tread contour that is made of embodiments of the present invention of expression.As shown in Figure 1, fetus face 1 is provided with on the position CL in the central along the flat portion 2 of rib shape that tire circumferential direction extends continuously.Be respectively arranged with in the both sides of flat portion 2 and be indentation and along the major trough 3 of the inboard that tire circumferential direction extends and the major trough 4 in the outside.Between major trough 3,4, be provided with the multi-pattern groove 5 that is communicated with both.Mark off the piece portion row 60 that constitute by a plurality of portions 6 by these major troughs 3,4 and pattern groove 5.In addition, more be provided with multi-pattern groove 7 at major trough 4 by in the zone of tire shoulder side than the outside.The piece portion row 80 that constitute by a plurality of portions 8 have been marked off by these major troughs 4 and pattern groove 7.And pattern groove 5 tilts to a direction with respect to tire circumferential direction in the both sides of flat portion 2, and pattern groove 7 tilts to another direction with respect to tire circumferential direction in the both sides of flat portion 2.That is to say that this air-inflation tyre has constituted the not specific asymmetric tread pattern of installation direction.
Each piece portion 6 of piece portion row 60 is divided into the central lateral mass part 6a of portion and the outer lateral mass part 6b of portion by stria 9, this stria 9, and its tilt angle alpha with respect to tire circumferential direction is that 5 °～12 °, groove width W are 2%～4% (with reference to Fig. 2) of ground connection width TCW.
Fig. 2 is the figure that amplifies the piece portion row between the expression major trough.As shown in Figure 2, central lateral mass part 6a of portion and the outer lateral mass part 6b of portion are because stria 9 has tilt angle alpha, so it is longer than the opposing party towards the side in two piece portion limits of pattern groove 5.That is to say that the length L s on short piece portion limit wants the long limit Ll of piece portion short.And the central lateral mass part 6a of portion and the outer lateral mass part 6b of portion are configured, towards short piece portion limit, relatively stagger along the bearing of trend of stria 9.
According to above-mentioned air-inflation tyre, green phase for tire Zhou Fangxiang a little bevelled stria 9 each piece portion 6 that will be in the piece portion row 60 on the position of easy generation vibration be divided into central lateral mass part 6a of portion and the outer lateral mass part 6b of portion, and central lateral mass part 6a of portion and the outer lateral mass part 6b of portion are configured to relatively stagger along the bearing of trend of stria 9, both reduced the impulsive sound that is produced when entreating part 6a of lateral mass portion and the outer lateral mass part 6b of portion ground connection in these thus, make the generation of impulsive sound regularly different again, therefore can reduce by the caused noise of impulsive sound.Particularly, when one group of lateral mass part 6a of portion of central authorities and the outer part 6b of lateral mass portion ground connection,, so can reduce impulsive sound effectively though the length L s on the piece portion limit of the relatively large and first grounded part of length L l on the piece portion limit of back grounded part is less relatively.
On the other hand, can set the groove area ratio of fetus face 1 enough big, so just can give play to good land locomotion performance by having zigzag major trough 3,4, pattern groove 5,7 and stria 9.
At this, the length L s on piece portion limit, the difference of Ll diminish when the tilt angle alpha of stria 9 is discontented with 5 °, reduce effect so can not get the actv. noise, otherwise the sand ground rideability reduce when surpassing 12 °.In addition, when the discontented ground connection width TCW of the groove width W of stria 9 2% the time easily in stria 9, stop up silt etc., so can not get good land locomotion performance, otherwise when above ground connection width TCW 4% the time can bring harmful effect to noise performance.
As shown in Figure 2, the S of the amount of staggering relatively of preferred central lateral mass part 6a of portion and the outer lateral mass part 6b of portion is towards 20%～40% of the length L on the piece portion limit of stria 9.When this amount of staggering S less than the length L on piece portion limit 20% the time noise that produces by the dispersion of impulsive sound reduce effect and will reduce, otherwise when surpassing 40%, be easy to generate the eccentric wear damage.
The length L s on short piece portion limit towards pattern groove 5 of preferred central lateral mass part 6a of portion and the outer lateral mass part 6b of portion is than 65%～85% of the length L l on long piece portion limit.When the discontented length L l of length L s 65% the time be easy to generate tire root and the wearing and tearing of tire toe, otherwise noise reduces effect decline when surpassing 85%.
Preferably each central lateral mass part 6a of portion and outside be respectively provided to few three tire sipes 10 among the part 6b of lateral mass portion.Can improve snowfield rideability, rideability on ice by adding tire sipe 10.Particularly, preferably be at least in three the tire sipe 10 and contain: to the tire sipe of major trough 3 or major trough 4 openings, to the tire sipe of pattern groove 5 openings with to the tire sipe of stria 9 openings.Be provided with like this tire sipe 10 make its to surrounded the central lateral mass part 6a of portion and outside each channel opening of the part 6b of lateral mass portion, just be difficult to thus produce and in each groove, stop up silt or accumulated snow etc.In addition, preferably in each piece portion 8 of the piece portion row 80 of tire shoulder side, many tire sipes 11 are set also.
In addition, preferably being set at the central lateral mass part 6a of portion and the outer lateral mass part 6b of portion with the intermediate point A in the stria 9 is that the center is in point-symmetric shape.Like this central lateral mass part 6a of portion and outside the part 6b of lateral mass portion adopted under the situation of point symmetry shape, no matter how the hand of rotation of tire can both obtain the effect of improving of noise performance.Certainly, the configuration of the tire sipe 10 among preferred central lateral mass part 6a of portion and the outer lateral mass part 6b of portion also is to be that the center is in point symmetry with the intermediate point A in the stria 9.
Below understand preferred implementation of the present invention in detail, but be construed as: only otherwise break away from the spirit of the present invention and the scope of claims defined, can carry out various changes to this, substitute and displacement.
Embodiment
Produce the such tire of comparative example 1～3 and embodiment 1～7 respectively, its tire size is 285/60R18, this tire has on the middle position of fetus face along the continuous flat portion of extending of tire circumferential direction, have the piece portion row that constitute by a plurality of portions simultaneously, described portion is 2 major troughs that all are indentation and extended along tire circumferential direction by the both sides in this flat portion, mark off with the multi-pattern groove that links these major troughs, by the stria that extends along tire Zhou Fangxiang each pieces of piece portion row partly is slit into lateral mass portion part outside the central lateral mass portion partial sum, these central lateral mass portion parts and outer lateral mass portion partly are configured to towards relatively staggering in the face of the piece portion limit of lacking of pattern groove and along the bearing of trend of stria, and make the ratio (%) of the amount of staggering S with respect to the length L on piece portion limit, the tilt angle alpha of stria (°), the groove width W of stria is with respect to the ratio (%) of ground connection width TCW, the edge lengths Ls of piece portion carries out various variations with respect to the ratio (%) of the edge lengths Ll of piece portion as table 1.In addition, partial sum outward appearance piece portion of central lateral mass portion partly being made as with the intermediate point in the stria is that the center is in point-symmetric shape.In addition, as conventional example, notice the tire that the piece portion row between the major trough are not cut apart by stria.
For these testing tires, utilize following test method to estimate land locomotion performance, noise performance, abrasion loss partially, its result compiles and is presented in the table 1.
The land locomotion performance:
Testing tire is assembled on the wheel that rim size is 18 * 8JJ, and air pressure is made as 230kPa and then it is installed on the four-wheel drive vehicle, carries out the function test by the land locomotion of test driver execution.Evaluation result shows conventional example as index 100.The big more land locomotion performance of just representing of this exponential quantity is good more.
Noise performance:
Testing tire is assembled on the wheel that rim size is 18 * 8JJ, air pressure is made as 230kPa and then it is installed on the four-wheel drive vehicle, after having adjusted load-carrying (taking two+tester+vehicle weight of people), travel on the highway of mating formation with speed 100km/h, use the microphone be arranged on the driver's seat reveal to implement instrumentation by noise in the tread contour caused by noise car.Evaluation result, the inverse of use measured value shows conventional example as index 100.This exponential quantity is big more just represent the tread contour noise more less, noise performance is good more.
Inclined to one side abrasion loss:
Testing tire is assembled on the wheel that rim size is 18 * 8JJ, air pressure is made as 230kPa and then it is installed on the four-wheel drive vehicle, in the 8000km that travelled (hill path: the highway of mating formation 59%: 41%), measure the abrasion loss (mm) of tire root and tire toe in the piece portion row between the major trough.
Table 1
| Have or not stria | The amount of staggering (%) | The tilt angle alpha of stria (°) | The groove width W of stria (%) | Ls/Ll ×100 (％) | Land locomotion performance (index) | Noise performance (index) | Irregular wear amount (mm) | |
| Conventional example | Do not have | - | - | - | - | 100 | 100 | 0 |
| Comparative example 1 | Have | 0 | 0 | 3 | 100 | 100 | 100 | 0 |
| Comparative example 2 | Have | 30 | 15 | 3 | 75 | 90 | 110 | 0 |
| Comparative example 3 | Have | 30 | 8 | 1 | 75 | 90 | 110 | 0 |
| Embodiment 1 | Have | 15 | 8 | 3 | 75 | 100 | 105 | 0 |
| |
Have | 30 | 8 | 3 | 75 | 100 | 110 | 0 |
| |
Have | 50 | 8 | 3 | 75 | 100 | 110 | 1 |
| |
Have | 30 | 12 | 3 | 75 | 100 | 110 | 0 |
| |
Have | 30 | 12 | 3 | 75 | 100 | 110 | 0 |
| |
Have | 30 | 8 | 3 | 60 | 100 | 110 | 1 |
| |
Have | 30 | 8 | 3 | 90 | 100 | 105 | 5 |
As can be seen from Table 1, the tire of embodiment 1～7 is compared with conventional example, can keep the land locomotion performance and can improve the noise performance relevant with tread contour again, and not see that almost having eccentric wear to decrease takes place.
On the other hand, the tire of comparative example 1 since the tilt angle alpha of its stria is 0 °, the amount of the staggering S of piece portion be piece portion limit length L 0%, so do not obtain the effect of improving of noise performance.So the tire of comparative example 2 is because the excessive land locomotion performance reduction of the tilt angle alpha of its stria.So the tire of comparative example 3 is because the narrow land locomotion performance reduction of the width W of its stria.
Claims (5)
1. air-inflation tyre, it has on the middle position of fetus face along the flat portion that tire circumferential direction extends continuously, possess the piece portion row that constitute by a plurality of portions simultaneously, described portion all is indentation and two major troughs that extend along tire circumferential direction and the multi-pattern groove that links between these major troughs mark off by the both sides in this flat portion, wherein
Green phase is that 5 °～12 ° and groove width are that the stria of ground connection width 2%～4% partly is slit into the outer lateral mass portion of partial sum of central lateral mass portion part with each pieces of above-mentioned portion's row for the angle of inclination of tire circumferential direction, and these central lateral mass portion's parts and outer lateral mass portion partly are configured to towards in the face of the piece portion limit of the weak point of above-mentioned pattern groove, stagger relatively along the bearing of trend of above-mentioned stria.
2. air-inflation tyre as claimed in claim 1, wherein, the above-mentioned central lateral mass above-mentioned outer lateral mass portion of partial sum of the portion amount of staggering relatively partly is set as towards 20%～40% of the length on the piece portion limit of above-mentioned stria.
3. air-inflation tyre as claimed in claim 1 or 2, wherein, in the above-mentioned outer lateral mass of the above-mentioned central lateral mass portion partial sum portion part, be set as towards 65%～85% of the length L l on the long piece portion limit of above-mentioned pattern groove towards the length L s on short piece portion limit of above-mentioned pattern groove.
4. air-inflation tyre as claimed in claim 1 or 2 wherein, is respectively provided to few three tire sipes on the lateral mass portion part outside above-mentioned central lateral mass portion partial sum is above-mentioned.
5. air-inflation tyre as claimed in claim 1 or 2, wherein, above-mentioned central lateral mass portion's part and above-mentioned outer lateral mass portion be partly for being in point-symmetric shape, and this point-symmetric center of symmetry is a lateral mass portion intermediate point between partly, in the stria outside a pair of central lateral mass portion partial sum of symmetry.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006130929A JP4350103B2 (en) | 2006-05-10 | 2006-05-10 | Pneumatic tire |
| JP130929/2006 | 2006-05-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101070045A CN101070045A (en) | 2007-11-14 |
| CN100581849C true CN100581849C (en) | 2010-01-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200710102275A Active CN100581849C (en) | 2006-05-10 | 2007-05-09 | Inflatable tyre |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP4350103B2 (en) |
| CN (1) | CN100581849C (en) |
| AU (1) | AU2007201786B2 (en) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2151334B1 (en) * | 2007-05-28 | 2014-09-10 | Bridgestone Corporation | Tire |
| JP4631932B2 (en) | 2008-05-23 | 2011-02-16 | 横浜ゴム株式会社 | Pneumatic tire |
| JP5350694B2 (en) * | 2008-07-08 | 2013-11-27 | 株式会社ブリヂストン | tire |
| JP5314343B2 (en) * | 2008-07-15 | 2013-10-16 | 株式会社ブリヂストン | Pneumatic tire |
| JP5320428B2 (en) * | 2011-04-12 | 2013-10-23 | 住友ゴム工業株式会社 | Pneumatic tire |
| JP6010987B2 (en) * | 2012-04-06 | 2016-10-19 | 横浜ゴム株式会社 | Pneumatic tire |
| JP5671503B2 (en) * | 2012-08-09 | 2015-02-18 | 住友ゴム工業株式会社 | Pneumatic tire |
| JP5834031B2 (en) * | 2013-02-21 | 2015-12-16 | 住友ゴム工業株式会社 | Pneumatic tire |
| CN103144500B (en) * | 2013-03-27 | 2015-07-22 | 东莞市建东橡胶制品有限公司 | Proportional remote control racing car tire |
| JP5898640B2 (en) * | 2013-04-23 | 2016-04-06 | 住友ゴム工業株式会社 | Pneumatic tire |
| US10179483B2 (en) | 2014-05-01 | 2019-01-15 | The Yokohama Rubber Co., Ltd. | Pneumatic tire |
| JP6536027B2 (en) * | 2014-12-06 | 2019-07-03 | 住友ゴム工業株式会社 | Pneumatic tire |
| FR3035823A1 (en) * | 2015-05-07 | 2016-11-11 | Michelin & Cie | ROLLING STRIP COMPRISING A BLOCK PRESENTING A PLURALITY OF CUTTINGS |
| CN110234520B (en) * | 2016-12-29 | 2022-03-01 | 倍耐力轮胎股份公司 | Automobile tyre |
| JP7081229B2 (en) | 2018-03-13 | 2022-06-07 | 住友ゴム工業株式会社 | tire |
| JP7424159B2 (en) * | 2020-03-26 | 2024-01-30 | 住友ゴム工業株式会社 | tire |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3378789B2 (en) * | 1998-02-27 | 2003-02-17 | 住友ゴム工業株式会社 | Pneumatic tire |
| JP4404398B2 (en) * | 1999-03-11 | 2010-01-27 | 株式会社ブリヂストン | Pneumatic tire |
| JP4596706B2 (en) * | 2001-08-31 | 2010-12-15 | 住友ゴム工業株式会社 | Pneumatic tire |
| JP3682269B2 (en) * | 2002-05-09 | 2005-08-10 | 住友ゴム工業株式会社 | Pneumatic tire |
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2006
- 2006-05-10 JP JP2006130929A patent/JP4350103B2/en active Active
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- 2007-04-23 AU AU2007201786A patent/AU2007201786B2/en active Active
- 2007-05-09 CN CN200710102275A patent/CN100581849C/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| AU2007201786B2 (en) | 2009-08-13 |
| AU2007201786A1 (en) | 2007-11-29 |
| CN101070045A (en) | 2007-11-14 |
| JP2007302071A (en) | 2007-11-22 |
| JP4350103B2 (en) | 2009-10-21 |
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Address after: Kanagawa Prefecture, Japan Patentee after: THE YOKOHAMA RUBBER Co.,Ltd. Country or region after: Japan Address before: Tokyo, Japan Patentee before: THE YOKOHAMA RUBBER Co.,Ltd. Country or region before: Japan |