公开(公告)号：EP2248683A1

公开(公告)日：2010-11-10

申请号：EP09708719.1

申请日：2009-02-05

Applicant: Bridgestone Corporation

Inventor： OYAMA, Yuji

IPC: B60C9/20 ,  B60C9/00 ,  B60C9/18 ,  D07B1/06

CPC classification number: D07B1/062 ,  B60C9/0007 ,  D07B2201/2018 ,  D07B2201/2022 ,  D07B2501/2046

Abstract: Provided is a pneumatic tire for heavy loads in which durability and a desired rigidity in circumferential direction are simultaneously attained while achieving a reduction in the tire weight.
The present invention is a pneumatic tire for heavy loads having at least one layer of steel belt in which a plurality of steel cords 1, each of which is constituted by a plurality of intertwisted filaments 11, are arranged in parallel in the form of bundles. In the pneumatic tire for heavy loads, the height of cord bundles 2, that is, the minor axis (A) (mm) of the steel cords 1 and the bundle width (B) (mm), satisfy the relationship represented by the following Formula (1): B / A ≥ 2.0
and at the same time, the value of S = B/ (B + D), which is defined by the bundle width (B) (mm) of the cord bundles 2 and the distance (D) (mm) between the cord bundles, satisfies the relationship represented by the following Formula (2): 0.60 ≤ S ≤ 0.80

Abstract translation: 本发明提供一种在实现轮胎重量的减少的同时实现耐久性和圆周方向的期望刚度的重负荷用充气轮胎。 本发明是一种用于重载的充气轮胎，其具有至少一层钢带，其中由多根缠结丝11组成的多根钢丝帘线1以束的形式并列布置。 在用于重负载的充气轮胎中，帘线束2的高度，即钢帘线1的短轴（A）（mm）和束宽度（B）（mm））的高度满足以下关系 公式（1）：B / A‰¥2.0，同时由绳束2和束2的束宽（B）（mm）定义的S = B /（B + D） 线束之间的距离（D）（mm）满足下式（2）所示的关系：0.60‰¤‰¤0.80

公开(公告)号：EP2065512A1

公开(公告)日：2009-06-03

申请号：EP07792923.0

申请日：2007-08-23

Applicant: Bridgestone Corporation

Inventor： IKEHARA, Kiyoshi

IPC: D07B1/06 ,  B60C9/00 ,  B60C9/22

CPC classification number: B60C9/0007 ,  B60C9/22 ,  D07B1/0613 ,  D07B1/0633 ,  D07B1/0653 ,  D07B5/10 ,  D07B2201/1004 ,  D07B2201/1076 ,  D07B2201/2006 ,  D07B2201/2018 ,  D07B2201/2023 ,  D07B2201/2024 ,  D07B2201/2029 ,  D07B2201/2039 ,  D07B2201/204 ,  D07B2201/2051 ,  D07B2201/206 ,  D07B2401/208 ,  D07B2501/2046 ,  D07B2801/12

Abstract: A steel cord which has no production problem noted in the related art and which can be produced efficiently with stable quality, particularly a steel cord useful for the purpose of reinforcing a tire crown portion, as well as a composite of rubber and steel cord and a tire, which include the steel cord, are provided.
A steel cord has a multi-twist structure in which N (N = 2 to 8) strands 2 are twisted, each strand 2 being formed by twisting a plurality of element wires 1 and having a substantially elliptical cross-section, wherein d1/d2 > 1.08 is satisfied, where the major diameter of the strand 2 is represented by d1 and the minor diameter is represented by d2, and ε c defined by the following equation: ϵ c = √ ⁢ - b / 2 + √ ⁢ b 2 / 4 - c - 1
(in the equation, b represents -1 + π 2 (-4R 2 + d 2 )/P 2 , c represents π 2 d 2 k(4π 2 R 2 + P 2 )/P 4 , R represents (D - d)/2, k represents tan 2 (π/2 - π/N), and d represents (d1 + d2)/2) satisfies ε c > 0.005, where the diameter of a circle circumscribing the cord is represented by D (mm) and the twist pitch of the cord is represented by P (mm).

Abstract translation: 现有技术中没有注意到生产问题的钢丝帘线，其质量可以高效率地生产，特别是用于加强轮胎胎冠部分的钢帘线，以及橡胶和钢帘线和 提供包括钢丝绳的轮胎。 钢帘线具有N（N = 2〜8）股2绞合的多捻结构，每股2是通过扭转多个元件丝1而形成的，具有大致椭圆形的横截面，其中d1 / d2 > 1.08，其中股2的长径由d1表示，小直径由d2表示，μc由下式定义：õc =š ¢ - b / 2 +š ¢b 2/4-c-1（在等式中，b表示-1 + -2（-4R 2 + d 2）/ P 2，c表示2 d 2 k（4 -2 R 2 + P 2）/ P 4 ，R表示（D-d）/ 2，k表示tan 2（À/ 2À/ N），d表示（d1 + d2）/ 2）满足μc> 0.005，其中， 帘线由D（mm）表示，帘线的捻距由P（mm）表示。

公开(公告)号：EP1961860A1

公开(公告)日：2008-08-27

申请号：EP06812162.3

申请日：2006-10-30

Applicant: Bridgestone Corporation

Inventor： HAYASHI, Shoji

IPC: D07B1/06 ,  B60C9/00 ,  B60C9/20

CPC classification number: D07B1/062 ,  B60C9/0007 ,  B60C9/2006 ,  D07B1/0626 ,  D07B2201/2006 ,  D07B2201/2018 ,  D07B2201/2022 ,  D07B2201/2023 ,  D07B2201/2028 ,  D07B2201/2029 ,  D07B2201/206 ,  D07B2401/206 ,  D07B2501/2046 ,  D07B2501/2076 ,  D07B2801/12

Abstract: There is provided a steel cord for reinforcing rubber article having superior durability, and a pneumatic radial tire improved in steering stability and durability by using it. There is also provided a pneumatic radial tire satisfactorily combining steering stability, durability, and good cost performance required for a high performance radial tire intended for the application to a high performance passenger car. The steel cord for reinforcing rubber article has a 1×n structure composed of a plurality of steel filaments stranded in the same direction at the same stranding pitch, wherein the number of the steel filaments is 6 to 12 and the diameter of the steel filaments is 0.08 to 0.21 mm. In the pneumatic radial tire having a carcass (1), as a framework, extending toroidally between a pair of bead parts (11), with a crown part of the carcass being reinforced with a belt layer (2), the above-described steel cord for reinforcing rubber article is applied to a cord constituting the belt layer.

Abstract translation: 提供了具有优异的耐久性的用于增强橡胶制品的钢丝帘线，以及通过使用它提高了操纵稳定性和耐久性的充气子午线轮胎。 还提供了一种令人满意地将转向稳定性，耐久性以及旨在用于高性能乘用车的高性能子午线轮胎所需的良好成本性能的充气子午线轮胎。 用于增强橡胶制品的钢丝绳具有1×n结构，其以相同绞合间距在同一方向上绞合的多根钢丝组成，其中钢丝数为6〜12，钢丝的直径为 0.08〜0.21mm。 在具有胎体（1）的充气子午线轮胎作为框架，在一对胎圈部（11）之间环状地延伸，胎体的胎冠部分被带束层（2）加强，上述钢 将用于增强橡胶制品的帘线施加到构成带束层的帘线上。

公开(公告)号：EP0969140B1

公开(公告)日：2003-07-16

申请号：EP99304192.0

申请日：1999-05-28

Applicant: Bridgestone Corporation

Inventor： Tagawa, Kazuyoshi, c/o Bridgestone Corporation

IPC: D07B1/06

CPC classification number: D07B1/062 ,  D07B2201/2006 ,  D07B2201/2018 ,  D07B2201/2023 ,  D07B2201/2025 ,  D07B2201/2039 ,  D07B2201/206 ,  D07B2207/209 ,  D07B2501/2046 ,  Y10S57/902 ,  D07B2801/12

公开(公告)号：EP1112868A3

公开(公告)日：2002-08-28

申请号：EP00311659.7

申请日：2000-12-22

Applicant: Sumitomo Rubber Industries Ltd.

Inventor： Ohya, Yukihide, Sumitomo Rubber Industries, Ltd.

IPC: B60C9/02 ,  B60C9/00 ,  D07B1/06

CPC classification number: D07B1/062 ,  B60C9/0007 ,  B60C9/02 ,  D07B2201/2018 ,  D07B2201/2023 ,  D07B2201/2025 ,  D07B2201/2028 ,  D07B2201/2029 ,  D07B2201/2061 ,  D07B2501/2046 ,  D07B2801/12

Abstract: A pneumatic tyre (1) comprises a tread portion (2), a pair of sidewall portions (3), a pair of bead portions (4), and a carcass ply (6) of steel cords (10) extending between the bead portions (4) through the tread portion (2) and sidewall portions (3). Each of the carcass cords (10) comprises a number "n" of steel filaments (F) each having a diameter (d) of from 0.17 to 0.40 mm. The steel filaments (F) are twisted together to have a "1Xn" bundle-twist structure or an interlace-twist structure. In a vicinity of the maximum tyre section width point P of each of the sidewall portions, a sectional shape coefficient S of each carcass cord is set in a range of from 0.5 to 0.9, wherein the sectional shape coefficient S is (d 2 X n)/(L1 X L2), "n" is the number of the filaments, "d" is the average of the diameters of the filaments, "L1" is the largest measure of distance between two extremities of the cord which occurs in a direction in a cross section of the cord, and "L2" is the measure of distance between two extremities of the cord in a direction perpendicular to the above-mentioned direction.

Abstract translation: 一种充气轮胎（1），包括胎面部分（2），一对胎侧部分（3），一对胎圈部分（4）和钢丝帘线（10）的胎体帘布层（6） （4）穿过胎面部分（2）和侧壁部分（3）。 每个胎体帘线（10）包括数量为“n”的钢丝（F），每根钢丝的直径（d）为0.17至0.40mm。 钢丝（F）加捻成具有“1Xn”束捻结构或交织扭曲结构。 在每个侧壁部分的最大轮胎截面宽度点P附近，每个胎体帘线的截面形状系数S设置在0.5至0.9的范围内，其中截面形状系数S为（d2×n） /（L1×L2），“n”是长丝的数量，“d”是长丝直径的平均值，“L1”是帘线的两个末端之间的距离的最大量度，其发生在一个方向 在帘线的横截面中，并且“L2”是帘线的两个末端之间在垂直于上述方向的方向上的距离的量度。

公开(公告)号：EP1010547A3

公开(公告)日：2001-10-10

申请号：EP99124042.5

申请日：1999-12-09

Applicant: THE YOKOHAMA RUBBER CO., LTD.

Inventor： Imamiya, Susumu, c/o The Yokohama Rubber Co., Ltd.

IPC: B60C9/00 ,  B60C9/20 ,  D07B1/06

CPC classification number: D07B1/0653 ,  B60C9/0007 ,  B60C9/2006 ,  D07B2201/2018 ,  D07B2201/2023 ,  D07B2201/2025 ,  D07B2201/2029 ,  D07B2201/2032 ,  D07B2501/2046

Abstract: A pneumatic radial tire having a belt layer comprising a steel cord is disclosed. The steel cord is constructed as follows: (a) a 1+N structure is provided, where sheath filaments amounting to N in number are stranded up around a spirally-reformed core filament in a cord longitudinal direction; (b) a shape of a cord cross section is flat; (c) an open structure is provided, where a gap is formed between adjacent filaments of the sheath filaments in the cord cross section; (d) the core filament is caused to bite between the adjacent filaments; (e) a spiral direction of the core filament is identical to a stranding direction of the sheath filaments; and (f) a major axial direction of a flat surface of the cord cross section is set along a facial direction of the belt layer.

Abstract translation: 公开了具有包括钢丝帘线的带层的充气子午线轮胎。 钢丝帘线如下构造：（a）提供1 + N结构，其中数量为N的鞘丝在帘线纵向方向上缠绕在螺旋重整的芯丝周围; （b）帘线横截面的形状是平坦的; （c）提供开放结构，其中帘线横截面中的鞘丝的相邻细丝之间形成间隙; （d）使芯丝在相邻丝之间咬合; （e）芯丝的螺旋方向与鞘丝的绞合方向相同; （f）帘线横截面的平坦表面的主轴向方向沿着带束层的面部方向设置。

公开(公告)号：EP1036235A1

公开(公告)日：2000-09-20

申请号：EP98958915.5

申请日：1998-11-25

Applicant: N.V. BEKAERT S.A.

Inventor： DE VOS, Xavier ,  LIPPENS, Yvan ,  SOMERS, Albert ,  VAN GIEL, Frans

IPC: D07B1/06 ,  D07B7/02

CPC classification number: D07B1/0653 ,  B60C9/0057 ,  B60C9/0064 ,  D07B1/0613 ,  D07B1/0626 ,  D07B1/0646 ,  D07B7/025 ,  D07B2201/2007 ,  D07B2201/2018 ,  D07B2201/2022 ,  D07B2201/2023 ,  D07B2401/208 ,  D07B2501/2046 ,  D07B2501/2076 ,  Y10S57/902 ,  Y10T428/12333

Abstract: A steel structure adapted for the reinforcement of elastomers, said steel reinforcement comprising one or more steel filaments (10). At least one of said steel filaments (10) is provided with a first crimp and a second crimp. The first crimp lies in a plane that is substantially different from the plane of the second crimp. Applying both crimps can be done in an efficient way by means of two pairs (12, 14) of toothed wheels which are not externally driven. By means of these crimps it is possible to obtain steel structures with an increased penetration of rubber or with an increased elongation at break.

公开(公告)号：EP0841430A1

公开(公告)日：1998-05-13

申请号：EP97202789.0

申请日：1997-09-11

Applicant: N.V. BEKAERT S.A.

Inventor： De Vos, Xavier ,  Lippens, Yvan

IPC: D07B1/06

CPC classification number: D07B1/0653 ,  B60C9/0057 ,  D07B1/0626 ,  D07B1/0646 ,  D07B2201/2008 ,  D07B2201/2018 ,  D07B2201/2023 ,  D07B2201/2059 ,  D07B2207/205 ,  D07B2501/2046 ,  D07B2501/2076 ,  D07B2801/12

Abstract: A steel cord (10) adapted for the reinforcement of elastomeric products comprises a core and a layer arranged around the core. The core comprises one to four core filaments (12) and the layer comprises three to ten layer filaments (14). At least one of the core filaments (12) have a first wave form and at least one of the layer filaments (14) have a second wave form such that the first wave form is substantially different from said second wave form.
This allows to control the size of the micro-gaps and to guarantee rubber penetration.

Abstract translation: 适于增强弹性体产品的钢丝绳（10）包括芯和围绕芯布置的层。 芯包括一至四根芯丝（12），该层包括三至十层细丝（14）。 芯丝（12）中的至少一个具有第一波形，并且层丝（14）中的至少一个具有第二波形，使得第一波形与所述第二波形基本不同。 这允许控制微间隙的尺寸并保证橡胶渗透。

公开(公告)号：EP0834612A1

公开(公告)日：1998-04-08

申请号：EP96202759.5

申请日：1996-10-03

Applicant: N.V. BEKAERT S.A.

Inventor： Lippens, Yvan ,  de Vos, Xavier

IPC: D07B1/06

CPC classification number: D07B1/0653 ,  B60C9/0057 ,  D07B1/0626 ,  D07B1/0646 ,  D07B2201/2007 ,  D07B2201/2008 ,  D07B2201/2018 ,  D07B2201/2023 ,  D07B2207/205 ,  D07B2501/2046 ,  D07B2501/2076 ,  Y10S57/902 ,  Y10T428/2913 ,  Y10T428/2936 ,  Y10T428/2945 ,  D07B2801/12

Abstract: A steel cord (10) adapted for the reinforcement of elastomeric products comprises a core and a layer arranged around the core. The core comprises one to four core filaments (12) and the layer comprises three to ten layer filaments (14). At least one of the core filaments (12) have a first wave form and at least one of the layer filaments (14) have a second wave form such that the first wave form is substantially different from said second wave form.
This allows to control the size of the micro-gaps and to guarantee rubber penetration.

Abstract translation: 适于增强弹性体产品的钢丝绳（10）包括芯和围绕芯布置的层。 芯包括一至四根芯丝（12），该层包括三至十层细丝（14）。 芯丝（12）中的至少一个具有第一波形，并且层丝（14）中的至少一个具有第二波形，使得第一波形与所述第二波形基本不同。 这允许控制微间隙的尺寸并保证橡胶渗透。

公开(公告)号：EP0551124A2

公开(公告)日：1993-07-14

申请号：EP93100206.7

申请日：1993-01-08

Applicant: BRIDGESTONE CORPORATION

Inventor： Ikehara, Kiyoshi

IPC: D07B1/06

CPC classification number: D07B1/0653 ,  B60C9/0007 ,  B60C9/0057 ,  B60C9/2006 ,  D07B2201/2007 ,  D07B2201/2008 ,  D07B2201/2018 ,  D07B2201/2023 ,  D07B2201/2024 ,  D07B2201/2039 ,  D07B2201/2081 ,  D07B2401/2025 ,  D07B2401/208 ,  D07B2501/2046 ,  Y10S57/902 ,  Y10T152/10765 ,  D07B2801/14

Abstract: A steel cord for reinforcing rubber articles comprises one wave-form or helical core steel filament and a plurality of sheath steel filaments disposed around the core steel filament, the pitch Pc of the core steel filament is 3.0 dc/0.34 ≦ Pc ≦ 10.0 dc/0.34 (dc = diameter of steel core filament) and the core forming ratio Rc = Lc/dc (Lc is an amplitude of the wave or helix of the core steel filament) is within a particular range varying depending on the number of sheath steel filaments. The rubber articles containing the steel cord have an improved resistance to corrosion propagation and a high strength. A pneumatic tire is reinforced with the above-mentioned steel cord and contains a cross belt layer where

(i) an angle 0 formed by a reinforcing steel cord and the equatorial plane of the tire is :
(ii) a gap between adjacent two steel cords in the same layer, I, is :
(iii) a gauge of the gum between two facing cords, G, is :

The pneumatic tire exhibits suppression of development of crack at the belt end in addition to the advantages as above.

Abstract translation: 用于增强橡胶制品的钢帘线包括一个波形或螺旋芯钢丝和围绕芯钢丝布置的多个护套钢丝，芯钢丝的间距Pc为3.0cd / 0.34 < = dc dc / 0.34（dc =钢芯长丝的直径），芯形成比Rc = Lc / dc（Lc是芯钢丝的波长或螺旋的振幅）在根据数量变化的特定范围内 的鞘钢丝。 含有钢帘线的橡胶制品具有改善的抗腐蚀传播性和高强度。 充气轮胎用上述钢帘线增强，并且包含交叉带束层，其中（i）由钢筋帘线形成的角度θ和轮胎的赤道平面是：（ii）相邻的 同一层中的两根钢丝绳I是：$（iii）两个面对帘线之间的牙龈G的量规是：$ 充气轮胎显示出抑制皮带末端处裂纹的发展\; 具有如上所述的优点。$$