CN102765302A - Pneumatic-tyre wheel - Google Patents

Pneumatic-tyre wheel Download PDF

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Publication number
CN102765302A
CN102765302A CN2012101288731A CN201210128873A CN102765302A CN 102765302 A CN102765302 A CN 102765302A CN 2012101288731 A CN2012101288731 A CN 2012101288731A CN 201210128873 A CN201210128873 A CN 201210128873A CN 102765302 A CN102765302 A CN 102765302A
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Prior art keywords
tire
mentioned
tyre
sipe
air
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CN2012101288731A
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Chinese (zh)
Inventor
久保田康弘
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Sumitomo Rubber Industries Ltd
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Sumitomo Rubber Industries Ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/80Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
    • Y02T10/86Optimisation of rolling resistance, e.g. weight reduction 

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Abstract

In a pneumatic-tyre wheel, through restricting shapes and allocation positions of sipes, the rolling resistance is reduced. Spipes (9) are arranged at intervals along the tyre circumference on the outer surface (3S) of a tyre side part (3) of at least one part of a pneumatic-tyre wheel (1). Under the unloaded normal state that a rim is assembled inside a regular rim and is filled with standard internal pressure, the sipes (9) are arranged in a tyre wall area which is 70-90% of tyre cross section height (H)away from a tyre bead reference line (BL), and is inclinedly extended in 40-50 degrees in relative to the tyre radiating direction, the sipe width (W1) is 0.5 to 1.0mm, and the adjacent sipes of the tyre circumference are provided with at least parts of overlapping parts (ch) which are mutually overlapped on the tyre circumference.

Description

Air-inflation tyre
Technical field
The present invention relates to reduce the air-inflation tyre of rolling resistance.
Background technology
In recent years, hope to reduce airtyred rolling resistance for the fuel efficiency that improves vehicle.As the method that reduces rolling resistance, the outside face that for example in following patent documentation 1, discloses the portion on the sidewall is provided with the ditch of broad, suppresses the rubber deformation of the sidewall portion that the rolling by tire causes, thereby reduces the method for hysteresis loss.Wherein, there is following tendency in hysteresis loss: if the temperature of rubber rises then reduces, if the temperature of rubber descends then increases on the contrary.
Yet, be provided with the air-inflation tyre of the ditch of above-mentioned that kind, because near the air layer the outside face of sidewall portion is stirred because of the rolling of tire, make the rubber of this sidewall portion be cooled, so there is the very little problem of effect that reduces hysteresis loss.
Patent documentation 1:JP spy opens the 2010-115973 communique
Summary of the invention
The present invention proposes in view of above problem; Its main purpose is; A kind of tire sipe that the given shape of the width with 0.5~1.0mm is set through the tyre sidewall zone of the portion on the sidewall is provided; The over cooling of the rubber of sidewall portion when preventing tire running, thus hysteresis loss can be reduced effectively, and reduce the air-inflation tyre of rolling resistance.
The invention that technical scheme 1 is put down in writing among the present invention is a kind of air-inflation tyre; At least the outside face of portion circumferentially is arranged at intervals with tire sipe along tire to this air-inflation tyre on a side sidewall; This airtyred being characterised in that; Be assembled in regular wheel rim and filled under the non-loaded reference standard conditions of pressing in the standard at wheel rim; It is 70~90% the zone that is the tyre sidewall zone of tire cross-section height that above-mentioned tire sipe is arranged on apart from the tyre bead datum line; And above-mentioned tire sipe is with respect to the angle tilt ground extension of tire radiation direction with 30~60 degree, and the cutter well width is 0.5~1.0mm, and the adjacent tire sipe that makes progress in tire week has: at least a portion is in the overlapped overlapping portion that makes progress in tire week.
In addition, the invention that technical scheme 2 is put down in writing, on the airtyred basis that technical scheme 1 is put down in writing, above-mentioned tire sipe, its tire outer end and the tire radical length between tire the inner radially radially is 10~20% of tire cross-section height.
In addition, the invention that technical scheme 3 is put down in writing, on the airtyred basis that technical scheme 1 or 2 is put down in writing, above-mentioned tyre sidewall zone except above-mentioned tire sipe, ditch or other tire sipes be not set.
In addition; The invention that technical scheme 4 is put down in writing; On each airtyred basis of putting down in writing, above-mentioned tire sipe comprises in technical scheme 1 to 3: the first cutter groove that circumferentially tiltedly extends to side's inclination with respect to tire and with respect to tire circumferentially to the second cutter groove that extends obliquely with the opposite direction of the above-mentioned first cutter groove.
In addition; The invention that technical scheme 5 is put down in writing; On each airtyred basis of putting down in writing, above-mentioned tire sipe is in its tire the inner and/or outer end radially in technical scheme 1 to 4, and setting has 2~3 times internal diameter of above-mentioned cutter well width and recessed hole portion.
The invention put down in writing of technical scheme 6 in addition; In technical scheme 1 to 5 on each airtyred basis of putting down in writing; The above-mentioned first cutter groove and the above-mentioned second cutter groove along tire circumferentially with identical intervals setting; And extend with identical angle tilt ground with respect to tire radiation direction, and the tire radical length is identical.
Air-inflation tyre of the present invention, the outside face of portion circumferentially is arranged at intervals with tire sipe along tire at least one side's sidewall.This air-inflation tyre is because the rubber deformation of sidewall portion when having suppressed tire rolling so can reduce hysteresis loss, reduces rolling resistance.In addition; Under the non-loaded reference standard conditions of in wheel rim is assembled in regular wheel rim and filling standard, pressing; It is that 70~90% zone of tire cross-section height is the tyre sidewall zone that above-mentioned tire sipe is set at apart from the tyre bead datum line; And above-mentioned tire sipe is with respect to the angle tilt ground extension of tire radiation direction with 30~60 degree, and the cutter well width is 0.5~1.0mm, and has at least a portion in the overlapped overlapping portion that makes progress in tire week at the adjacent tire sipe that makes progress in tire week.This tire sipe suppresses the stirring of air layer of the outside face of sidewall portion when tire running, do not make the rubber temperature excessive descent of sidewall portion, and then can keep the smaller hysteresis loss.Thereby reduce rolling resistance effectively.
Description of drawings
Fig. 1 is the cutaway view of the airtyred left-half of expression an embodiment of the invention.
Fig. 2 is the block diagram of the sidewall portion of Fig. 1.
Fig. 3 is the partial enlarged drawing of the sidewall portion of Fig. 1.
Fig. 4 is the A-A cutaway view of Fig. 3.
Fig. 5 is for explaining at overlapping the skeleton diagram of adjacent tire sipe that makes progress in tire week.
Description of reference numerals: 1... air-inflation tyre; 3... sidewall portion; 3S... the outside face of sidewall portion; 9... tire sipe; BL... tyre bead datum line; Ch... overlapping portion; H... tire cross-section height; W1... cutter well width; θ ... angle.
The specific embodiment
Below, with reference to accompanying drawing an embodiment of the invention are described.
Fig. 1 be this embodiment air-inflation tyre (below, abbreviate " tire " sometimes as.) cutaway view of 1 reference standard conditions.In this manual, " reference standard conditions " is meant tyre rim is assembled in pressure and non-loaded state in regular wheel rim (not shown) and the filling standard, and do not having under the situation of particular determination, the size of each one of tire etc. is got the value of measuring under this reference standard conditions.
At this; Above-mentioned " regular wheel rim " is meant in the schematism of the specification that comprises tire institute foundation; Stipulate the wheel rim of each specification according to each tire; If JATMA then is " standard rim ", if TRA then is " Design Rim ", if ETRTO then is " Measuring Rim ".In addition; Above-mentioned " pressing in the standard " is meant in the schematism of the specification that comprises tire institute foundation; Stipulate the air pressure of each specification according to each tire; If JATMA then is " high-altitude air pressure ", if the maxim that TRA is then put down in writing for table " TIRE LOAD LIMITS AT VARIOUS COLD INFLATION PRESSURES ", if ETRTO then is " INFLATION PRESSURE ".
The air-inflation tyre 1 of this embodiment have from fetus face 2 arrive through sidewall portion 3 bead part 4 bead core 5 carcass 6 and be disposed at the radial outside of this carcass 6 and at the in-to-in bracing ply 7 of fetus face 2.In addition, be provided with the ditch 8 that suitable draining is used at fetus face 2.
Above-mentioned carcass 6 is made up of at least one carcass cord, in this embodiment, is made up of a carcass cord 6A, and wherein carcass cord 6A has: main part 6a, and it is to cross at pair of bead core 5, between 5 annularly; Return portion 6b, its both sides with the 6a of aforementioned body portion are connected and turn back laterally from the tire axial inboard around above-mentioned bead core 5.The body cord of above-mentioned carcass cord 6A with respect to tire equator C direction for example with 75~90 ° angle tilt.Above-mentioned body cord for example adopts organic fiber cord or steel cord.
Above-mentioned bracing ply 7 is made up of two bracing ply cords at least, in this embodiment, is made up of tire radially inside and outside two bracing ply cord 7A, 7B.Each bracing ply cord 7A, 7B have the elastomeric belt cords such as steel cord with 15~40 ° angle tilt with respect to tire equator C.Each bracing ply cord 7A, 7B are overlapping in the cross one another direction of belt cord.
Extremely shown in Figure 3 like Fig. 1, air-inflation tyre 1 of the present invention, the outside face 3S of portion 3 circumferentially is arranged at intervals with tire sipe 9 along tire at least one side's sidewall.The tire sipe 9 of this embodiment is separately positioned on the sidewall portion 3 of tire axial both sides.
In addition, above-mentioned tire sipe 9 be arranged on apart from tyre bead datum line BL be the tire cross-section height H more than 70% and 90% below tyre sidewall (Buttress) area B r.The contriver clearly draws through various experiments, and this tyre sidewall area B r follows the rolling of tire in the sidewall portion 3 and the maximum zone of distortion of the rubber that shows.Therefore through above-mentioned tire sipe 9 being set at such tyre sidewall area B r, and the distortion of the rubber of sidewall portion 3 when utilizing the switching of this tire sipe 9 to suppress tire rolling, so hysteresis loss reduces.Therefore air-inflation tyre 1 of the present invention can reduce rolling resistance.Wherein,, then can't improve rubber deformation and suppress effect, make the rigidity of sidewall portion 3 descend deteriorations such as ride comfort on the contrary if above-mentioned tire sipe 9 is arranged at 70% the position less than the tire cross-section height H apart from tyre bead datum line BL.In addition, if tire sipe 9 is arranged on 90% the zone that surpasses the tire cross-section height H apart from tyre bead datum line BL, then the rigidity of fetus face 2 descends, and anti-irregular wear performance, turning performance worsen.Based on this viewpoint, tire sipe 9 is in tyre sidewall area B r, and more preferably being arranged on apart from tyre bead datum line BL is the zone more than 73% of tire cross-section height H, more preferably is arranged on the zone below 87% in addition.
In addition, in the present invention, tire sipe 9 is radiated the angle θ of direction and the value that cutter well width W1 is set at regulation with respect to tire.In air-inflation tyre 1 of the present invention, more effectively reduce rolling resistance thus.
At first, need tire sipe 9 be formed 30~60 degree with respect to the angle θ that tire radiates direction.That is, if above-mentioned angle θ less than 30 degree, then is difficult to suppress the rubber deformation along the tire radial effect.On the contrary, if angle θ surpasses 60 degree, then be difficult to suppress rubber deformation along the circumferential effect of tire.Based on this viewpoint, above-mentioned angle θ more preferably 40 the degree more than, in addition, more preferably 50 the degree below.In addition, in this manual, " with respect to the angle θ of tire radiation direction " is meant the angle in the position measurement of the tire intermediate point radially of above-mentioned tyre sidewall area B r.
In addition, need cutter well width W1 be defined as 0.5~1.0mm.That is, if above-mentioned cutter well width W1 then reduces the inhibition effect of rubber deformation less than 0.5mm.On the contrary,, rubber temperature is descended, in addition, also reduce the rigidity of sidewall portion 3 if cutter well width W1 then promotes the stirring of air layer greater than 1.0mm.Based on this viewpoint, cutter well width W1 is more preferably more than the 0.6mm, in addition more preferably below the 0.8mm.
In addition, as shown in Figure 4, the depth d 1 no particular determination of tire sipe 9, if but become big, then might promote the stirring of above-mentioned air layer.On the contrary, if the depth d 1 of above-mentioned tire sipe 9 reduces, then might can't bring into play the effect of the rubber deformation that suppresses sidewall portion 3.Based on this viewpoint, above-mentioned depth d 1 is preferably more than the 1.0mm, more preferably more than the 2.0mm, is preferably in addition below the 4.0mm, more preferably below the 3.0mm.
In this manual, be meant with respect to tire circumferentially to the same direction bevelled tire sipe 9 of any side at the tire sipe 9a, the 9b that tire week make progress adjacent.
Need have overlapping ch at the tire sipe 9a that tire week makes progress adjacent, 9b, this overlapping ch is meant that the part of above-mentioned at least two tire sipe 9a, 9b is upwards overlapped in tire week.Above-mentioned " in the circumferential overlapped overlapping portion of tire " is meant in this manual, and be as shown in Figure 5, with adjacent tire sipe 9a, the 9b overlapping part after with respect to the circumferential projection of tire.For example, if above-mentioned overlapping ch is not set, then can't effectively suppress rubber deformation in the tire sipe 9a that tire week makes progress adjacent, 9b.If yet overlapping ch increases (that is, the bar number of tire sipe 9 increases), promotes the stirring of air layer, and the temperature of rubber is descended.Based on this viewpoint,, more preferably more than 40%, be preferably in addition below 75%, more preferably below 60% being preferably more than 25% of the tire sipe 9a that tire week makes progress adjacent, 9b in the circumferential overlapped Duplication of tire.Wherein, above-mentioned Duplication is with the tire radical length L1 of above-mentioned tire sipe 9, represent with the ratio L1a/L1 of the tire length L 1a radially of overlapping ch.
In addition, above-mentioned tire sipe 9 its tires outer end 9o and tire radical length L1 between the tire inner 9i radially radially is preferably 10~20% of tire cross-section height H.That is,, then exist the rubber of sidewall portion 3 to be difficult to the tendency of distortion, on the contrary,, then promote near the stirring of the air layer the outside face 3S of sidewall portion 3, rubber temperature is descended if increase if the tire radical length L1 of tire sipe 9 reduces.Based on this viewpoint, above-mentioned tire radical length L1 is more preferably more than 12%, in addition more preferably below 18%.
In addition, like Fig. 2 and shown in Figure 3, the tire sipe 9 of this embodiment constitutes and comprises: the first cutter groove 10 that circumferentially tiltedly (in Fig. 3, tilts to the lower left from the upper right side) and extend to side's inclination with respect to tire; With respect to tire radiation direction to the second cutter groove 11 that (in above-mentioned Fig. 3, tilts to the lower right) obliquely and extend with the above-mentioned first cutter groove, 10 opposite directions from the upper left side.The air-inflation tyre 1 of this embodiment can suppress with the irrelevant to rotation direction of tire along the rubber deformation of the circumferential effect of tire effectively thus.
In addition; The first cutter groove 10 of this embodiment and the second cutter groove 11; Circumferentially be provided with at interval along tire, and extend obliquely with identical angle θ (θ 1, θ 2), and tire radical length L1 forms identical with respect to tire radiation direction with identical spacing P1.This air-inflation tyre 1 is because the temperature of the rubber deformation of sidewall portion 3, rubber spreads all over tire circumferentially becomes evenly, so can more effectively reduce rolling resistance.Wherein, above-mentioned " identical spacing P1 " obviously comprises the identical situation of each spacing P1, in addition also comprise spacing P1 for each spacing on average be average headway P1a ± situation below 15%.
In addition, at the tire inner 9i and/or the outer end 9o (in this embodiment, inner 9i and outer end 9o) radially of tire sipe 9, the outside face 3S that is provided with the portion 3 from the sidewall is to the recessed hole portion 12 in the inboard of tire axial.This hole portion 12 can relax the rolling of following tire and the switching of the tire sipe 9 that produces to the stress concentration that above-mentioned inner 9i and above-mentioned outer end 9o cause, help to suppress the generation of crackle etc.Based on this viewpoint, the inside diameter D of hole portion 12 is preferably more than 2 times of cutter well width W1, more preferably more than 2.3 times.Yet, if the inside diameter D of above-mentioned hole portion 12 is excessive, promote the stirring of air layer, the tendency that exists the rubber temperature of sidewall portion 3 to descend.Based on this viewpoint, the inside diameter D of above-mentioned hole portion 12 is preferably below 3 times of cutter well width W1, is preferably in addition below 2.7 times.
Based on the viewpoint of aforesaid mitigation stress concentration, when observing tire from the side, this hole portion 12 is preferably formed and is round type.
In addition; Suppress effect that the temperature of rubber descends and the viewpoint that relaxes the effect of stress concentration based on performance balancedly; The depth d 2 of above-mentioned hole portion 12 is preferably more than 90% with the ratio d2/d1 of the depth d 1 of above-mentioned tire sipe 9; More preferably more than 95%, be preferably in addition below 110%, more preferably below 105%.
In addition, above-mentioned tyre sidewall area B r is preferably except that above-mentioned tire sipe 9 (the first cutter groove 10 and the second cutter groove 11) ditch or other tire sipe is not set.That is, if at this tyre sidewall area B r ditch or other tire sipe are set, the stirring of the air layer that then promotes to be produced by the rolling of tire descends the rubber temperature of sidewall portion, so might can't reduce rolling resistance.Tyre sidewall area B r at this embodiment is not provided with ditch or other tire sipe.
In addition, this embodiment is provided with the tire shoulder traverse furrow 14 that extends laterally from the tire axial inboard of ground terminal Te at above-mentioned fetus face 2.This tire shoulder traverse furrow 14 is owing to the rubber volume that reduces fetus face 2, so reduce rubber deformation.Therefore through tire shoulder traverse furrow 14 is set, the air-inflation tyre 1 of this embodiment reduces rolling resistance.In addition, the tire shoulder traverse furrow 14 of this embodiment does not arrive above-mentioned tyre sidewall area B r but forms the terminal.Near the excessive stirring of the air layer this tire shoulder traverse furrow 14 inhibition sidewall portions 3.Based on this viewpoint, the tire distance L 2 radially of the outer end 14e of the tire axial of tire shoulder traverse furrow 14 and the tire of tire sipe 9 outer end 9o radially is preferably more than the 3mm, more preferably more than the 5mm, is preferably in addition below the 15mm, more preferably below the 12mm.
Wherein, ground terminal Te is defined as, and the roller tire of the fetus face 2 the when air-inflation tyre of above-mentioned reference standard conditions 1 is loaded regular load and is grounded on the plane is the both ends in the outside axially.Above-mentioned " regular load " is meant in the schematism of the specification that comprises tire institute foundation; Stipulate the load of each specification according to each tire; If JATMA then is " maximum load capability "; If the maxim that TRA is then put down in writing for table " TIRE LOAD LIMITS AT VARIOUS COLDINFLATION PRESSURES ", if ETRTO then is " LOAD CAPACITY ".
More than, preferred embodiment specify of the present invention, but the invention is not restricted to graphic embodiment, also deformable is that variety of way is implemented.For example, can also be the tire radical length L1 of tire sipe, the different mode of tire sipe 9a, 9b that tire week is making progress adjacent.
Embodiment
Manufacturing have Fig. 1 essential structure and sidewall portion shown in Figure 2 shape and have the air-inflation tyre (size: 175/65R15), and their performance tested of tire sipe of the specification of table 1.Wherein, common specification is following.
Tread width: 148mm
The width W 1:0.5mm of tire sipe
The tire radiation orientation angle θ of tire sipe: 45 degree
Hole portion: tire the inner and the outer end radially at each tire sipe is set as round type.
The depth d 2:3.0mm of hole portion
Test method is following.
< rolling resistance >
Utilize the rolling resistance test machine, the rolling resistance when going on the cylinder that above-mentioned air-inflation tyre and the diameter under following condition are 1.7m to wheel rim is installed on is measured.The result is that 100 index representes that numerical value is more little good more with comparative example 1.
Rim size: 14 * 5JJ
The interior pressure: 230kPa
Load: 3.92kN
Moving velocity: 80km/h
The result of test is shown in table 1.
Table 1
Figure BDA0000158321470000091
Figure BDA0000158321470000101
The results verification of test is compared with comparative example, and the tire of embodiment has reduced rolling resistance.In addition, test, show the tendency identical with this test though the angle of width and the tire radiation direction of tire sipe is changed in the scope of regulation.

Claims (6)

1. air-inflation tyre, the outside face of portion circumferentially is arranged at intervals with tire sipe along tire on a side sidewall at least, this airtyred being characterised in that,
Be assembled in regular wheel rim and filled under the non-loaded reference standard conditions of pressing in the standard at wheel rim,
It is 70~90% the zone that is the tyre sidewall zone of tire cross-section height that above-mentioned tire sipe is arranged on apart from the tyre bead datum line; And above-mentioned tire sipe extends with respect to the angle tilt ground of tire radiation direction with 30~60 degree; And the cutter well width is 0.5~1.0mm, and
The adjacent tire sipe that makes progress in tire week has: at least a portion is in the overlapped overlapping portion that makes progress in tire week.
2. air-inflation tyre according to claim 1 is characterized in that,
Above-mentioned tire sipe, its tire outer end and the tire radical length between tire the inner radially radially is 10~20% of tire cross-section height.
3. air-inflation tyre according to claim 1 and 2 is characterized in that,
Above-mentioned tyre sidewall zone except above-mentioned tire sipe, ditch or other tire sipes be not set.
4. according to each described air-inflation tyre in the claim 1 to 3, it is characterized in that,
Above-mentioned tire sipe comprises: the first cutter groove that circumferentially tiltedly extends to side's inclination with respect to tire and with respect to tire circumferentially to the second cutter groove that extends obliquely with the opposite direction of the above-mentioned first cutter groove.
5. according to each described air-inflation tyre in the claim 1 to 4, it is characterized in that,
Above-mentioned tire sipe is in its tire the inner and/or outer end radially, and setting has 2~3 times internal diameter of above-mentioned cutter well width and recessed hole portion.
6. according to claim 4 or 5 described air-inflation tyres, it is characterized in that,
The above-mentioned first cutter groove and the above-mentioned second cutter groove along tire circumferentially with identical intervals setting, and with respect to tire radiation direction with identical angle tilt ground extension, and the tire radical length is identical.
CN2012101288731A 2011-05-02 2012-04-27 Pneumatic-tyre wheel Pending CN102765302A (en)

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JP2011103137A JP5351928B2 (en) 2011-05-02 2011-05-02 Pneumatic tire
JP2011-103137 2011-05-02

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CN104703817A (en) * 2012-10-05 2015-06-10 株式会社普利司通 Pneumatic tire
CN104708671A (en) * 2015-03-09 2015-06-17 山东玲珑轮胎股份有限公司 Cutting method, cutting device and tire side and inner liner composite part
CN105291714A (en) * 2015-11-19 2016-02-03 德州玲珑轮胎有限公司 Tire
CN107584973A (en) * 2016-07-08 2018-01-16 东洋橡胶工业株式会社 Pneumatic tire
CN110300670A (en) * 2016-12-20 2019-10-01 米其林集团总公司 The tire of chemical resistance of concrete
CN111433053A (en) * 2017-11-22 2020-07-17 米其林集团总公司 Tire with sidewalls comprising ribs
CN111448077A (en) * 2017-12-12 2020-07-24 株式会社普利司通 Heavy load tire

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104703817A (en) * 2012-10-05 2015-06-10 株式会社普利司通 Pneumatic tire
CN104703817B (en) * 2012-10-05 2016-12-14 株式会社普利司通 Pneumatic tire
CN104708671A (en) * 2015-03-09 2015-06-17 山东玲珑轮胎股份有限公司 Cutting method, cutting device and tire side and inner liner composite part
CN105291714A (en) * 2015-11-19 2016-02-03 德州玲珑轮胎有限公司 Tire
CN107584973A (en) * 2016-07-08 2018-01-16 东洋橡胶工业株式会社 Pneumatic tire
CN110300670A (en) * 2016-12-20 2019-10-01 米其林集团总公司 The tire of chemical resistance of concrete
CN111433053A (en) * 2017-11-22 2020-07-17 米其林集团总公司 Tire with sidewalls comprising ribs
CN111448077A (en) * 2017-12-12 2020-07-24 株式会社普利司通 Heavy load tire
US11331954B2 (en) 2017-12-12 2022-05-17 Bridgestone Corporation Heavy duty tire

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