CN1721210A - Inflatable radial tyre for heavy load - Google Patents

Inflatable radial tyre for heavy load Download PDF

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Publication number
CN1721210A
CN1721210A CNA2005100525462A CN200510052546A CN1721210A CN 1721210 A CN1721210 A CN 1721210A CN A2005100525462 A CNA2005100525462 A CN A2005100525462A CN 200510052546 A CN200510052546 A CN 200510052546A CN 1721210 A CN1721210 A CN 1721210A
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CN
China
Prior art keywords
tire
rubber
layer
rolling
bead
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Granted
Application number
CNA2005100525462A
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Chinese (zh)
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CN100462244C (en
Inventor
上田健一
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Toyo Tire Corp
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Toyo Tire and Rubber Co Ltd
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Publication of CN1721210A publication Critical patent/CN1721210A/en
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Publication of CN100462244C publication Critical patent/CN100462244C/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C15/00—Tyre beads, e.g. ply turn-up or overlap
    • B60C15/06—Flipper strips, fillers, or chafing strips and reinforcing layers for the construction of the bead
    • B60C2015/0617—Flipper strips, fillers, or chafing strips and reinforcing layers for the construction of the bead comprising a cushion rubber other than the chafer or clinch rubber
    • B60C2015/0621—Flipper strips, fillers, or chafing strips and reinforcing layers for the construction of the bead comprising a cushion rubber other than the chafer or clinch rubber adjacent to the carcass turnup portion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C15/00—Tyre beads, e.g. ply turn-up or overlap
    • B60C15/06—Flipper strips, fillers, or chafing strips and reinforcing layers for the construction of the bead
    • B60C2015/0617—Flipper strips, fillers, or chafing strips and reinforcing layers for the construction of the bead comprising a cushion rubber other than the chafer or clinch rubber
    • B60C2015/0625—Flipper strips, fillers, or chafing strips and reinforcing layers for the construction of the bead comprising a cushion rubber other than the chafer or clinch rubber provided at the terminal edge portion of a carcass or reinforcing layer

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  • Tires In General (AREA)

Abstract

The invention provides a pneumatic radial tire for heavy load, which comprises at least a sheet of carcass ply 1 winded from the inside to the outside and locked around a bead core 3 and a rubber filler 4. The radial tire comprises covering rubber 15 for covering an end part 1c of a winding ply 1b and soft rubber pads 16, 17 softer than the covering rubber 15 for covering both sides of the covering rubber 15 in the tire width direction. A distance a between a normal L drawn from an outer peripheral side face of a body ply 1a to an outer peripheral side end of a rim flange 11 and the end part 1c of the winding ply 1b is made to be shorter than 15mm. The tire causes separation at its winding end hardly and excellent in durability.

Description

Inflatable radial tyre for heavy load
Technical field
The present invention relates to a kind of high inflatable radial tyre for heavy load of durability that in the structure of bead portion, has feature.
Background technology
In general, Pneumatic belt tire has the body piles (carcass ply) 1 that is erected at one deck at least that cord (cord) arrangement by radially of configuration constitutes in a pair of bead (bead) portion 2 shown in Fig. 2,3.By around bead core 3 be arranged at the gum filler 4 of this tire outer circumferential side, roll up from the inboard and in conjunction with fixing in bead portion 2 laterally two ends of body piles 1.That is, body piles 1 is made of the body layer 1a that forms tyre framework, the rolled-up layer 1b that roll in bead portion 2.The tire width direction outside rolling layer 1b is provided with the bead enhancement Layer 21 with steel cord or organic fiber cord as required.In addition, in the outside of the body piles 1 of the tyre surface with groove 9 (tread) portion 7, be formed with a plurality of belts (belt) layer 8.
In the heavy duty pneumatic vehicle tire, in the use of depressing in height, tension force acts on body piles 1, rolls layer and is stretched to bead core 3 laybacks.Like this, bead core 3 just is subjected to rotary torque, and distortion is just stretched out significantly to the tire width direction outside by the bead portion 2 of rim flange (rim flange) 11 tops.In addition, in the use under the top load, rotate the bead portion 2 that the impact that causes is delivered to rim flange 11 tops by the load of tire.When because this stretches out distortion or load of tire is rotated, when distortion concentrates on the end 1c that rolls layer 1b (below be sometimes referred to as roll end), just have the situation that causes separation in early days, thereby become the major cause that makes the deterioration of bead endurance ability.
So, as the method for improving the bead endurance ability, in following patent documentation 1,2, disclosed the harder heavy duty pneumatic vehicle tire of hardness of the rubber pad that makes the configure volumes origin or beginning in the past.In addition, in following patent documentation 3, disclose and be provided with the rubber-coated heavy duty pneumatic vehicle tire that covers the end of rolling end and bead enhancement Layer, in following patent documentation 4,5, the rubber composition that discloses by utilizing the proportioning of stipulating constitutes the rubber-coated heavy duty pneumatic vehicle tire that improves the bead endurance ability that end is rolled in covering.
But, in the structure in the past, because will roll end is arranged at than bead enhancement Layer roller tire radial outside more, so will not roll layer to be arranged at the rim flange top even be not yet, therefore roll the influence that the load of stretching out distortion or tire that end just is subjected to described bead portion is easily rotated, thereby the bead endurance ability is reduced.On the other hand, the height setting that will roll end must be lower situation under because described tension force, roll layer and just stretched to bead core layback easily, thereby have generation to make distortion become big problem along the shearing force of roll up direction.And, in following patent documentation 4, be arranged at than bead enhancement Layer (chafer) structure of roller tire radially inner side more rolling end though disclose, but this kind structure is the structure that simply the bead enhancement Layer is arranged at the top of rolling end, for the aspect ratio of rolling end formation lower in the past or that roll the end and the position relation of rim flange etc. is not disclosed.
Patent documentation 1: the spy opens flat 3-224805 communique
Patent documentation 2: the spy opens flat 5-96915 communique
Patent documentation 3: the spy opens flat 5-319035 communique
Patent documentation 4: the spy opens flat 9-156325 communique
Patent documentation 5: the spy opens the 2001-277822 communique
Summary of the invention
The objective of the invention is to, provide a kind of very difficult generation to roll the separation at end place, the good inflatable radial tyre for heavy load of durability.
Described purpose can utilize the present invention as described below to realize.
Promptly, inflatable radial tyre for heavy load of the present invention is to possess the body layer that is provided with in a pair of bead portion by being erected at, reel laterally with the gum filler of bead core that is had around described bead portion and the tire outer circumferential side that is configured in this bead core and from the inboard and in conjunction with a fixing inflatable radial tyre for heavy load of rolling the body piles of a slice at least that layer constitutes, it is characterized in that, possess and cover the rubber-coated of the described end of rolling layer, with rubber-coated softer and cover the soft rubber pad of described rubber-coated tire width direction both sides than this, the distance of normal of pulling out from the rim flange periphery side of circumferential lateral surface when being installed on the regulation wheel rim of described body layer and the described end of rolling layer is less than 15mm.
In the inflatable radial tyre for heavy load of the present invention, by making the normal of pulling out from the rim flange periphery side of circumferential lateral surface when being installed on the regulation wheel rim of body layer and rolling distance between the end (rolling end) of layer less than 15mm, be not arranged at the rim flange top and will not roll layer, therefore roll end and just be difficult to be subjected to the influence that stretching out of bead portion is out of shape or the load of tire is rotated, it is concentrated to rolling end therefore can to suppress distortion.The height of rolling end in addition can not become low, thereby can excessively not stretched to bead core side.Here, so-called regulation wheel rim is meant, with tire size accordingly by the wheel rim of the standard of JATMA decision.In addition, in the described formation, though it is compared with the past, rolling the easier quilt of layer stretches to bead core layback, but hold with harder rubber-coated covering by rolling, dispersing action is in the distortion of rolling end, in addition by should rubber-coatedly covering with the soft rubber pad effectively, just can relax this distortion, and delay the generation that separates effectively.
In above-mentioned, be preferably in the tire width direction outside of described soft rubber pad, tire periphery side is set is set at than the described end of the rolling layer steel cord enhancement Layer of roller tire radial outside more.
By the tire width direction outside at the soft rubber pad, tire periphery side is set to be configured in than the end steel cord enhancement Layer of roller tire radial outside more of rolling layer, just can strengthen the bead portion of rim flange top effectively, thereby can guarantee durability for the load rotation of tire etc.
Description of drawings
Fig. 1 is the main portion cutaway view of an example of expression inflatable radial tyre for heavy load of the present invention.
Fig. 2 is the radial cutaway view of an example of expression inflatable radial tyre for heavy load of the present invention.
Fig. 3 is the main portion cutaway view of an example of representing the bead portion of heavy duty pneumatic vehicle tire in the past.
Among the figure: the 1-body piles, the 1a-body layer, 1b-rolls layer, 1c-rolls end, 2-bead portion, 3-bead core, the 4-gum filler, 5-steel enhancement Layer, 6-nylon enhancement Layer, the 10-wheel rim, 11-rim flange, 15-is rubber-coated, the 16-rubber pad, the 17-rubber pad, the a-normal and roll the layer the end between distance, the L-normal.
The specific embodiment
Below with reference to accompanying drawings embodiments of the present invention are described.Fig. 1 is the main portion cutaway view that expression is installed in an example of the inflatable radial tyre for heavy load of the present invention on the regulation wheel rim.
Inflatable radial tyre for heavy load of the present invention possesses as shown in Figure 1 with 1 layer or multilayer body piles 1 along the tire radial array such as steel cord or high strength organic fiber cord.Body piles 1 is by being erected at the body layer 1a that is provided with in a pair of bead portion 2, reeling laterally from the inboard around bead core 3 and gum filler 4 and constituting in conjunction with the fixing layer 1b that roll.
Bead core 3 stacks gradually the bead metal filament of the cross section circle that covered by rubber and reels and constitute the complex of the most closely filling and form.In the present embodiment, the cross sectional shape of this complex is made hexagon, dispose according to the mode that makes its base and wheel rim 10 almost parallels.Like this, just can prevent the distortion of the cross sectional shape that causes by external force.Gum filler 4 forms subtriangular along the cross section that tire radially extends, and be set at the tire outer circumferential side of bead core 3, the rubber hardness that is exemplified (rubber hardness of measuring according to the tire A duroscope experiment of hardness of JISK6253, below identical) is 76～88 °.
Among the present invention, when from the circumferential lateral surface of body layer 1a when the periphery side of rim flange 11 is pulled out normal L, normal L and roll between the end 1c (below be sometimes referred to as roll end 1c) of layer 1b apart from a less than 15mm, be more preferably less than 10mm.Like this, owing to roll the top that layer 1b is not set at rim flange 11, therefore roll end 1c and just be difficult to be subjected to the influence that stretching out of bead portion is out of shape or the load of tire is rotated.In addition, the height of rolling end 1c can not become low, rolls layer 1b and can excessively not stretched to bead core 3 sides.And, normal L and roll between layer 1c apart from the length of a for the vertical line that hangs down to normal L from the mid-depth of rolling end 1c.
In addition, among the present invention, roll end 1c and be compared hard rubber-coated 15 coverings.The present invention is owing to be will roll end 1c as mentioned above to be arranged at scheme in the described scope, therefore compared with the past, though rolling the easier quilt of layer 1b stretches to bead core 3 laybacks, but cover with rubber-coated 15 by rolling end 1c, in addition, rubber-coated 15 usefulness softer rubber pad described later 16,17 is covered, just can disperse effectively, abirritation is in rolling the distortion of holding on the 1c, thus the generation that can delay to separate.
In the present embodiment, rubber-coated 15 is to roll on the end 1c by marginal belt 12 (for example 0.6mm is thick) is attached to with becoming cross section コ font, from these tire width direction both sides sheet rubber 14 (for example 1.5mm is thick) is formed along rolling layer 1b attaching.Marginal belt 12 both can be made of the rubber of identical proportioning with sheet rubber 14, also can constituting by different proportionings.In addition, marginal belt 12 also can be made of organic fibers such as for example nylon.
Preferred 69～79 ° of rubber-coated 15 rubber hardness.Rubber hardness is during less than 69 ° or when surpassing 79 °, owing to become big with the poor rigidity of body piles 1, the effect of therefore disperseing to roll the distortion of end 1c will reduce, and the effect of improving of bead endurance ability just has the tendency that diminishes.And in the present embodiment, so-called rubber-coated 15 rubber hardness is meant the rubber hardness of sheet rubber 14.
Rubber-coated 15 are set in the zone of the extending direction of rolling layer 1b.Be preferably more than the 5mm from the distance b of rolling the tire periphery side of end 1c to rubber-coated 15, more preferably more than the 10mm perpendicular to normal L direction.Like this, just can disperse to roll the distortion of end 1c effectively.
Rubber pad 16 is entered the mode of rolling between layer 1b and the gum filler 4 according to below making, and is arranged on along in the zone that tire radially extends.In addition, rubber pad 17 quilts are arranged on along in the zone that tire radially extends according to sandwiching the mode of rolling layer 1b with rubber pad 16.Rubber pad 16,17 is all softer than rubber-coated 15, and is covered with rubber-coated 15 tire width direction both sides (that is, rubber pad 16,17 is equivalent to described soft rubber pad).Like this, just effectively abirritation in rolling the distortion of end on the 1c, thereby the generation that can delay to separate.
Rubber pad 16,17 preferred rubber hardnesses than rubber-coated 15 hang down 2～15 °, more preferably low 3～12 °.When this difference of hardness surpasses 15 °, then, just have the tendency that the bead endurance ability is worsened because rubber pad 16,17 is soft excessively.On the other hand, when difference of hardness during less than 2 °, the distortion of then rolling end 1c just is difficult to disperse, thereby makes the bead endurance ability that the tendency of reduction be arranged.And rubber pad 16 and rubber pad 17 both can be the rubber hardness identical materials, also can be different materials.
The tire width direction outside at rubber pad 17 is provided with the steel enhancement Layer 5 (being equivalent to described steel cord enhancement Layer) with steel cord along rubber pad 17 outsides.The tire periphery side of steel enhancement Layer 5 is set at than rolling more roller tire radial outside of end 1c, is positioned at the roughly position of top of rim flange 11.On steel enhancement Layer 5, because the tension force that is caused by the use of depressing in the height does not act on body piles 1 basically, thereby the deformation ratio of end is less, thereby can strengthen the bead portion of rim flange 11 tops effectively, can guarantee the durability of the load rotation etc. with respect to tire.
In the present embodiment, on the tire periphery side of steel enhancement Layer 5, the cross section is pasted with marginal belt 13 with becoming the コ font.Like this, just can relax the distortion on the tire periphery side that concentrates on steel enhancement Layer 5.In addition, all sides are combined fixing in the tire width direction outside of rolling the bottom of body piles 1 in the tire of steel enhancement Layer 5.Like this, act on the influence of the rotary torque on the bead core 3 in the use that just is difficult to be subjected in height, depressing, thereby can suppress to be out of shape concentrating to tire periphery side.
In the tire width direction of steel enhancement Layer 5 outside, be provided with nylon enhancement Layer 6 with nylon cord along the outside of steel enhancement Layer 5.Present embodiment is represented the example that nylon enhancement Layer 6 is made of 2 enhancement Layers.Nylon enhancement Layer 6 is rolled from the inboard laterally in bead portion 2, and the end that is positioned at the tire width direction outside is set at than steel enhancement Layer 5 roller tire radial outside more.The end of rolling end 1c and enhancement Layer 5,6 is as present embodiment, respectively along the tire configuration of radially staggering, so just can suppress to be out of shape concentrated to each end.
In the tire width direction of nylon enhancement Layer 6 outside, be provided with the rubber pad 18 that radially extends along tire along the outside of nylon enhancement Layer 6.As rubber pad 18, example be by the material made from the rubber of rubber pad 17 identical proportionings.In the tire width direction outside of rubber pad 18, be provided with and the rubber bead infantees 19 of wheel rim direct contact and the sidewall rubber 20 of formation side wall portion.
Near the structure of inflatable radial tyre for heavy load of the present invention bead portion 2,, identical with tire shown in Figure 2 with known tire was identical in the past.That is,, and be uniformly set 1 layer or multiple belt layer 8 in the past, the belt enhancement Layer also was set in addition as required in the outside of the body piles 1 of fetus face 7.In addition, on the tire outer peripheral face of making by tread-rubber in its outside, form tread pattern along tire Zhou Fangxiang with many major troughs 9.Inboard at body piles 1 is typically provided with inside liner, is provided with sidewall rubber in the outside.
Heavy duty pneumatic vehicle tire is the tire that is used for the heavier vehicle of vehicle total weightes such as truck, city motor bus.
[other embodiment]
(1) in the described embodiment, be arranged on the example of roller tire radial outside more than normal L though represented to roll end 1c, among the present invention, so long as apart from a less than 15mm, then also can be arranged on roller tire radially inner side more with rolling end 1c than normal L.
(2) in the described embodiment, though as the bead enhancement Layer, represented to be provided with the example of the steel enhancement Layer 5 with steel cord, the present invention also can not use it, and the enhancement Layer that for example has organic fiber cord is set.In addition, in the described embodiment, though represented to dispose the example of nylon enhancement Layer 6 in the tire width direction outside as the steel enhancement Layer 5 of bead enhancement Layer, the present invention is not limited thereto.In addition, also can replace nylon enhancement Layer 6, and the enhancement Layer of being made by different constituent materials is set.
(3) in the described embodiment, though represented the tire width direction outside combined fixing example of rolling bottom of the interior all sides of the tire of steel enhancement Layer 5 at body piles 1, the present invention reels steel enhancement Layer 5 from the inboard in conjunction with fixing formation laterally in bead portion 2.
(4) in the described embodiment, though represented that using cross sectional shape is the example of hexagonal bead core 3, among the present invention, also the shape of bead core 3 can be set as the cross section is various polygons etc.At this moment, just can use the cross section is various polygonal bead metal filaments.
[embodiment]
To describe formation of the present invention and effect with specific embodiment etc. below.And the assessment item of embodiment etc. is following mensuration of carrying out.
(1) durability
As durability experiment, tire sets is contained on the wheel rim of size 8.00V, on the drum of diameter 1700mm,, run to till bead portion et out of order with interior pressure 830kPa, load 3350kgf (increasing by 10% in per 24 hours), speed 25km/h.Comparative example 2 is made as 100 and carry out index assessment, and the big more then travel distance of numerical value is big more, shows that promptly durability is good more.
(2) manufacturing cost
Needed Master Cost is calculated manufacturing cost from the making of tire.Comparative example 1 is made as 100 carries out index assessment, the big more manufacturing cost of then representing of numerical value is high more.
Comparative example 1
In bead shown in Figure 1 structure, prepared not to be provided with rubber-coated 15, will roll end 1c and be arranged on roller tire radial outside more than normal L, will be made as the inflatable radial tyre for heavy load (size 11.00R20) of 2mm apart from a, carried out described evaluation.And the body piles 1 that tire had is by top end number (the curtain number of lines that the cord Width is per 1 inch) being made as 15, the steel cord formation of the structure of 3+9+15 * 0.175+0.15.In addition, steel enhancement Layer 5 is that the top end number is made as 13, is made of the steel cord of described structure.In addition, nylon enhancement Layer 6 is that the top end number is made as 22.5, is made of the nylon cord of 1400dtex/2.
Comparative example 2
In bead structure shown in Figure 1, prepared to be arranged on roller tire radial outside and will be made as 30mm more with rolling end 1c apart from a than normal L except having, will be beyond the distance b of rolling end 1c be made as rubber-coated 15 the structure of 20mm, the inflatable radial tyre for heavy load identical with comparative example 1, carried out described evaluation.
Embodiment
In bead structure shown in Figure 1, prepared to be arranged on roller tire radial outside and will be made as 2mm more with rolling end 1c apart from a than normal L except having, will be beyond the distance b of rolling end 1c be made as rubber-coated 15 the structure of 20mm, the inflatable radial tyre for heavy load identical with comparative example 1, carried out described evaluation.
Above result is illustrated in the table 1.
[table 1]
Comparative example 1 Comparative example 2 Embodiment
Rubber hardness Gum filler 4 82° 82° 82°
Rubber pad 16 64° 64° 64°
Rubber pad 17 71° 71° 71°
Rubber pad 18 71° 71° 71°
Rubber-coated 15 - 74° 74°
Highly Rolling a layer 1b (is equivalent to apart from a) 2 30 2
Steel enhancement Layer 5 20 20 20
Nylon enhancement Layer 6 50/40 50/40 50/40
Durability 72 100 140
Manufacturing cost 100 103 101
The described height of ※ is made as the distance (mm) from normal L.
Shown in the result of table 1, embodiment compares with comparative example 1,2, and durability improves significantly, illustrates that formation of the present invention brought into play good bead endurance ability.In contrast, in the comparative example 1, since only make roll highly lower, therefore rolling layer is stretched to bead core layback and distortion is concentrated to rolling end easily, in the comparative example 2, be arranged on the rim flange top owing to will roll layer, therefore be subjected to the influence that stretching out of bead portion is out of shape or the load of tire is rotated easily, durability separately is lower.In addition, though comparative example 2 is compared with comparative example 1,,, therefore just can reduce manufacturing cost when improving durability because embodiment can reduce and roll height because of rolling of rubber-coated setting and body piles highly makes manufacturing cost increase.

Claims (2)

1. inflatable radial tyre for heavy load, it possesses by the gum filler of bead core that is erected at the body layer that is provided with in a pair of bead portion and is had around described bead portion and the tire outer circumferential side that is configured in this bead core reels from the inboard and laterally in conjunction with the fixing body piles of a slice at least that layer constitutes of rolling, it is characterized in that
Possess and cover the rubber-coated of the described end of rolling layer and rubber-coated softer and cover the soft rubber pad of described rubber-coated tire width direction both sides than this,
Distance between normal of pulling out from the rim flange periphery side of circumferential lateral surface when being installed on the regulation wheel rim of described body layer and the described end of rolling layer is less than 15mm.
2. inflatable radial tyre for heavy load according to claim 1, it is characterized in that, in the tire width direction of the described soft rubber pad outside, tire periphery side is set is set at than the described end of the rolling layer steel cord enhancement Layer of roller tire radial outside more.
CNB2005100525462A 2004-07-05 2005-03-01 Inflatable radial tyre for heavy load Active CN100462244C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2004197965A JP4500117B2 (en) 2004-07-05 2004-07-05 Heavy duty pneumatic radial tire
JP2004197965 2004-07-05

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CN1721210A true CN1721210A (en) 2006-01-18
CN100462244C CN100462244C (en) 2009-02-18

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CN102059924A (en) * 2009-11-13 2011-05-18 固特异轮胎和橡胶公司 Heavy duty tire
CN102656027A (en) * 2009-12-09 2012-09-05 米其林集团总公司 Tire bead for a heavy civil engineering vehicle
CN102770288A (en) * 2009-12-09 2012-11-07 米其林集团总公司 Tire bead for a heavy civil engineering vehicle
CN103317973A (en) * 2013-07-09 2013-09-25 广州市华南橡胶轮胎有限公司 Tire with improved tire bead structure and manufacturing method thereof
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Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5889405A (en) * 1981-11-24 1983-05-27 Bridgestone Corp Inflated radial tyre for heavy load
JPS5929504A (en) * 1982-08-09 1984-02-16 Sumitomo Rubber Ind Ltd Radial tire for heavy vehicle
JPS59109406A (en) * 1982-12-14 1984-06-25 Yokohama Rubber Co Ltd:The Pneumatic radial tyre for heavy load
JPH05319035A (en) * 1992-05-21 1993-12-03 Yokohama Rubber Co Ltd:The Pneumatic radial tire for heavy load
JP3158058B2 (en) * 1996-05-28 2001-04-23 住友ゴム工業株式会社 Radial tires for heavy loads
JP3224996B2 (en) * 1996-11-20 2001-11-05 住友ゴム工業株式会社 Radial tires for heavy loads
FR2781425B1 (en) * 1998-07-23 2000-09-01 Michelin Rech Tech REINFORCED RADIAL TIRE SADDLE
JP4402248B2 (en) * 2000-03-30 2010-01-20 株式会社ブリヂストン Pneumatic radial tire
JP2002331810A (en) * 2001-05-11 2002-11-19 Ohtsu Tire & Rubber Co Ltd :The Pneumatic radial tire

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CN102059924A (en) * 2009-11-13 2011-05-18 固特异轮胎和橡胶公司 Heavy duty tire
CN102770288B (en) * 2009-12-09 2016-01-20 米其林集团总公司 For the tire bead of heavy civil engineering vehicle
CN102656027A (en) * 2009-12-09 2012-09-05 米其林集团总公司 Tire bead for a heavy civil engineering vehicle
CN102770288A (en) * 2009-12-09 2012-11-07 米其林集团总公司 Tire bead for a heavy civil engineering vehicle
CN103317973A (en) * 2013-07-09 2013-09-25 广州市华南橡胶轮胎有限公司 Tire with improved tire bead structure and manufacturing method thereof
CN104442218B (en) * 2013-09-17 2017-06-23 东洋橡胶工业株式会社 The manufacture method of pneumatic tire
CN104442218A (en) * 2013-09-17 2015-03-25 东洋橡胶工业株式会社 Manufacture method of pneumatic tire
CN104723804A (en) * 2013-12-19 2015-06-24 东洋橡胶工业株式会社 Pneumatic radial tire
CN105711347A (en) * 2014-12-22 2016-06-29 东洋橡胶工业株式会社 Pneumatic radial tire
CN105711347B (en) * 2014-12-22 2018-03-20 东洋橡胶工业株式会社 Pneumatic belt tire
US10099516B2 (en) 2014-12-22 2018-10-16 Toyo Tire & Rubber Co., Ltd. Pneumatic radial tire with specified bead portions
CN112672892A (en) * 2018-09-20 2021-04-16 米其林集团总公司 Tyre with carcass reinforcement formed by a single layer of textile reinforcing elements

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