JPH111880A - Tire cord - Google Patents
Tire cordInfo
- Publication number
- JPH111880A JPH111880A JP9147855A JP14785597A JPH111880A JP H111880 A JPH111880 A JP H111880A JP 9147855 A JP9147855 A JP 9147855A JP 14785597 A JP14785597 A JP 14785597A JP H111880 A JPH111880 A JP H111880A
- Authority
- JP
- Japan
- Prior art keywords
- tire
- wire
- section
- cross
- tire cord
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000004073 vulcanization Methods 0.000 description 3
- 239000011324 bead Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010073 coating (rubber) Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B1/00—Constructional features of ropes or cables
- D07B1/06—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core
- D07B1/0606—Reinforcing cords for rubber or plastic articles
- D07B1/0646—Reinforcing cords for rubber or plastic articles comprising longitudinally preformed wires
-
- 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
- B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
- B60C9/0057—Reinforcements comprising preshaped elements, e.g. undulated or zig-zag filaments
-
- 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
- B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
- B60C9/0064—Reinforcements comprising monofilaments
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B1/00—Constructional features of ropes or cables
- D07B1/06—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core
- D07B1/0606—Reinforcing cords for rubber or plastic articles
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B7/00—Details of, or auxiliary devices incorporated in, rope- or cable-making machines; Auxiliary apparatus associated with such machines
- D07B7/02—Machine details; Auxiliary devices
- D07B7/025—Preforming the wires or strands prior to closing
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2201/00—Ropes or cables
- D07B2201/20—Rope or cable components
- D07B2201/2001—Wires or filaments
- D07B2201/2002—Wires or filaments characterised by their cross-sectional shape
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2201/00—Ropes or cables
- D07B2201/20—Rope or cable components
- D07B2201/2001—Wires or filaments
- D07B2201/2007—Wires or filaments characterised by their longitudinal shape
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2201/00—Ropes or cables
- D07B2201/20—Rope or cable components
- D07B2201/2001—Wires or filaments
- D07B2201/2007—Wires or filaments characterised by their longitudinal shape
- D07B2201/2008—Wires or filaments characterised by their longitudinal shape wavy or undulated
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2501/00—Application field
- D07B2501/20—Application field related to ropes or cables
- D07B2501/2046—Tire cords
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B5/00—Making ropes or cables from special materials or of particular form
- D07B5/005—Making ropes or cables from special materials or of particular form characterised by their outer shape or surface properties
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ropes Or Cables (AREA)
- Tires In General (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、タイヤの内部に
使用されるコード、例えば空気入りタイヤのブレーカに
用いられるコードに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cord used inside a tire, for example, a cord used for a breaker of a pneumatic tire.
【０００２】[0002]
【従来の技術】タイヤには、耐カット性向上のためにベ
ルト状に整列したワイヤーにゴムコーティングを施した
ものが埋設されている。特に、タイヤを周方向の強靭性
に優れた構造にしようとする場合、加硫時及び走行時の
径成長応力を吸収させるために少なくとも２本以上のワ
イヤーをより合わせた、いわゆるスチールコードを採用
することが一般的に行われている。2. Description of the Related Art Tires are embedded with rubber-coated wires arranged in a belt shape to improve cut resistance. In particular, when a tire is required to have a structure with excellent toughness in the circumferential direction, a so-called steel cord in which at least two or more wires are twisted together to absorb a diameter growth stress during vulcanization and running is adopted. It is generally done.
【０００３】しかし、こうしたスチールコードはコスト
高であるばかりではなく、加硫時の圧力によってワイヤ
ーどうしが長手方向にわたって接触した形状となってい
るため、スチールコードの内部にまでゴムが進入せず、
カットに対する耐腐蝕性が問題になる。However, such a steel cord is not only expensive but also has a shape in which the wires are in contact with each other in the longitudinal direction due to the pressure at the time of vulcanization, so that the rubber does not enter the inside of the steel cord.
Corrosion resistance to cuts becomes a problem.
【０００４】また、最近では低燃費化が強く求められて
いる。そのため、タイヤの軽量化が要請されるところで
ある。そこで、タイヤコードに単線ワイヤーを使用する
ことが提案されている。[0004] Recently, there is a strong demand for low fuel consumption. Therefore, reduction in weight of tires is being demanded. Therefore, it has been proposed to use a single wire for the tire cord.
【０００５】単線ワイヤーによるタイヤコードは、前記
スチールコードと比較すると、同一のワイヤー断面積で
のコード径を小さくすることができ、ゴム量を減らし、
軽量化を可能にする。更に、単線ワイヤーによるタイヤ
コードの場合には、ワイヤーの全周面をゴムで容易、か
つ確実に被覆できるため、カットによる吸水腐蝕疲労性
や接着力低下に対しても良好な耐久性が保証されるので
ある。[0005] A tire cord using a single wire can have a smaller cord diameter at the same wire cross-sectional area as compared with the steel cord, and reduce the amount of rubber.
Enables weight reduction. Furthermore, in the case of a tire cord made of a single wire, the entire peripheral surface of the wire can be easily and reliably covered with rubber, so that good durability against water absorption corrosion fatigue and reduced adhesive strength due to cutting is guaranteed. Because
【０００６】[0006]
【発明が解決しようとする課題】ところが、単線ワイヤ
ーによるタイヤコードは、剛直で、伸びが小さいという
問題点を内包している。このため、例えばタイヤに大き
な荷重が加わった状態での走行や、タイヤが大きな突起
物に乗り上げた場合、同タイヤに作用する圧縮又は引っ
張りの応力に対してこのタイヤコードでは、柔軟に対処
できない。従って、タイヤコードは疲労し易く、折損す
るおそれがある。タイヤコードの折損が多発すれば、タ
イヤの耐久性を低下させる重大な要因となる。However, a tire cord made of a single wire has a problem that it is rigid and has small elongation. For this reason, for example, when the tire is running with a large load applied to the tire or when the tire rides on a large protrusion, the tire cord cannot flexibly cope with the compressive or tensile stress acting on the tire. Therefore, the tire cord is easily fatigued and may be broken. Frequent breakage of tire cords is a significant factor in reducing tire durability.
【０００７】この発明は、このような従来の技術に存在
する問題点に着目してなされたものである。この発明の
目的は、タイヤの性能に影響を及ぼさないだけの伸びを
有し、かつ耐カット性に優れていると共に、タイヤの操
縦安定性を高めるのに貢献するタイヤコードを提供する
ことにある。The present invention has been made by paying attention to such problems existing in the prior art. An object of the present invention is to provide a tire cord that has an elongation that does not affect the performance of the tire, has excellent cut resistance, and contributes to enhancing the steering stability of the tire. .
【０００８】[0008]
【課題を解決するための手段】上記の課題を解決するた
めに、請求項１に記載の発明は、金属よりなる線材に、
ゴムが被覆されると共に、所望の二次元の波形が付与さ
れ、更に、当該線材の長手方向に円形断面部と変形断面
部とが所望ピッチで交互に配置されていることをその要
旨とする。Means for Solving the Problems To solve the above problems, the invention according to claim 1 provides a wire made of metal,
The gist of the present invention is that the rubber is coated, a desired two-dimensional waveform is provided, and circular cross sections and deformed cross sections are alternately arranged at a desired pitch in the longitudinal direction of the wire.
【０００９】請求項２に記載の発明は、請求項１に記載
のタイヤコードにおいて、前記変形断面部は、その断面
が楕円形状に形成され、前記波形は、当該楕円形状の短
軸方向に揺れるように付与されていることを特徴とす
る。According to a second aspect of the present invention, in the tire cord according to the first aspect, the deformed cross section has an elliptical cross section, and the waveform oscillates in a minor axis direction of the elliptical shape. Is provided as described above.
【００１０】請求項３に記載の発明は、請求項１又は２
に記載のタイヤコードにおいて、前記変形断面部は、そ
の外周面に前記楕円形状の長軸と平行な平面を有してい
ることを特徴とする。[0010] The invention described in claim 3 is the invention according to claim 1 or 2.
Wherein the deformed cross-section has a plane parallel to a major axis of the elliptical shape on an outer peripheral surface thereof.
【００１１】[0011]
【発明の実施の形態】以下、この発明を具体化した実施
形態について、図１〜図６に基づいて説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.
【００１２】図１、図２（Ａ）〜（Ｃ）に示すように、
金属の線材２よりなるタイヤコード１は、その長手方向
に所望ピッチで円形断面部３と変形断面部４とが交互に
なるよう構成されている。この変形断面部４の断面形状
は、図４（Ａ）に示すように、楕円形状に形成されつつ
も、その長軸に平行な平面が外周面に提供されている。
タイヤコード１には、長手方向において上下に揺れる波
形が付与される。かかる波形は、上下に一定の振幅をも
って連続的に設けられている。また、このタイヤコード
１の外表面には、ゴム５がその全体を覆うように装着さ
れている。As shown in FIGS. 1 and 2 (A) to 2 (C),
The tire cord 1 made of the metal wire 2 is configured such that the circular cross-sections 3 and the deformed cross-sections 4 alternate at a desired pitch in the longitudinal direction. As shown in FIG. 4A, the cross-sectional shape of the deformed cross-sectional portion 4 is formed in an elliptical shape, but a plane parallel to the major axis is provided on the outer peripheral surface.
The tire cord 1 is provided with a waveform that swings up and down in the longitudinal direction. Such a waveform is provided continuously with a constant amplitude up and down. A rubber 5 is attached to the outer surface of the tire cord 1 so as to cover the entirety.
【００１３】次に、このタイヤコード１の製造工程を説
明する。図３に示すように、まず、圧延機６に断面円形
状に形成された線材２を通過させる。この圧延機６は、
自転可能な一対のローラ７が対向方向に同速回転するよ
うに構成されている。かかるローラ７は、その半径方向
に突出した略長方形状の接触部８を複数（本実施形態で
は４つ）有しており、ローラ７の回転時には、両接触部
８によって線材２が挟まれ、圧延されるように設定され
ている。接触部８は、所定間隔をもってローラ７に配置
されているため、ローラ７間を通過しながらも、接触部
８によって挟まれることのない線材２は、元来の形状を
維持することになる。従って、圧延機６を通過した線材
２は、図２（Ａ）に示すように、所定の間隔をおいて円
形断面部３と変形断面部４とが交互に形成される。因み
に、変形断面部４は、図４（Ａ）に示すとおり、接触部
８の窪み８ａによって形成される。Next, a manufacturing process of the tire cord 1 will be described. As shown in FIG. 3, first, the wire 2 having a circular cross section is passed through a rolling mill 6. This rolling mill 6
The pair of rotatable rollers 7 is configured to rotate at the same speed in the facing direction. The roller 7 has a plurality (four in the present embodiment) of substantially rectangular contact portions 8 protruding in the radial direction. When the roller 7 rotates, the wire 2 is sandwiched between the contact portions 8, It is set to be rolled. Since the contact portions 8 are arranged on the rollers 7 with a predetermined interval, the wire 2 that is not pinched by the contact portions 8 while passing between the rollers 7 maintains the original shape. Accordingly, as shown in FIG. 2 (A), the wire 2 having passed through the rolling mill 6 has circular cross-sections 3 and deformed cross-sections 4 alternately formed at predetermined intervals. Incidentally, the deformed cross section 4 is formed by the depression 8a of the contact portion 8 as shown in FIG.
【００１４】圧延機６を通過した線材２は、ゴム押出機
９を経由する。すると、図２（Ｂ）に示すように、線材
２の外表面にはゴム５が被覆される。この結果、円形断
面部３に対応する部分と変形断面部４に対応する部分と
の全体断面積は、同じになる。The wire 2 that has passed through the rolling mill 6 passes through a rubber extruder 9. Then, as shown in FIG. 2B, the outer surface of the wire 2 is covered with rubber 5. As a result, the entire cross-sectional area of the portion corresponding to the circular cross-section 3 and the portion corresponding to the deformed cross-section 4 become the same.
【００１５】そして、線材２は、更にウェーブ成形機１
０を通過する。このウェーブ成形機１０は、一対の歯車
１１を有しており、かかる歯車１１は、互いに反対方向
に同速で自転可能に配置されている。ゴム５を装着した
線材２は、このウェーブ成形機１０を通過するとき、一
方の歯車１１が有する凸部と、他方の歯車１１が有する
凹部と間に挟まされる。すると、図２（Ｃ）に示すよう
に、線材２には長手方向において上下に揺れる波形が付
与される。このような工程を経ることによって、タイヤ
コード１を得ることができる。Then, the wire 2 is further processed by the wave forming machine 1.
Pass through zero. The wave forming machine 10 includes a pair of gears 11, and the gears 11 are arranged so as to be able to rotate at the same speed in directions opposite to each other. When passing through the wave forming machine 10, the wire 2 to which the rubber 5 is attached is sandwiched between a convex portion of one gear 11 and a concave portion of the other gear 11. Then, as shown in FIG. 2C, the wire 2 is given a waveform that swings up and down in the longitudinal direction. Through such steps, the tire cord 1 can be obtained.
【００１６】このタイヤコード１が、例えば、タイヤ２
０のブレーカベルト２１に採用される場合を説明する。
図５及び図６に示すように、このタイヤコード１の複数
本（本実施形態では３本）を一組として並列配置する。
このとき、一組のタイヤコード１間で、円形断面部３と
変形断面部４とがタイヤ２０の回転軸方向において隣り
合わないように配置される。そして、図示しないゴム押
出機又はカレンダーロールによりゴム２２で被覆して帯
状体２３を形成する。そして、この帯状体２３を２枚、
重ね合わせる。このとき、広幅の内層を構成する帯状体
２３ａの両幅端部が折り返され、その結果、帯状体２３
ａの外周面中央に凹部２３ｃが形成される。外層を構成
する帯状体２３ｂは、前記凹部２３ｃに配設される。内
層の帯状体２３ａと外層の帯状体２３ｂとでは、各タイ
ヤコード１がタイヤ２０の周方向に対して、例えば２５
度位の角度をもって互いに相反する方向に延びるように
するのが望ましい。The tire cord 1 is, for example, a tire 2
The case where the breaker belt 21 is adopted as the zero breaker belt 21 will be described.
As shown in FIGS. 5 and 6, a plurality (three in this embodiment) of the tire cords 1 are arranged in parallel as a set.
At this time, the circular cross-section 3 and the deformed cross-section 4 are arranged so as not to be adjacent to each other between the pair of tire cords 1 in the rotation axis direction of the tire 20. Then, the belt-like body 23 is formed by coating with a rubber 22 using a rubber extruder or a calendar roll (not shown). And two of these strips 23,
Overlap. At this time, both ends of the band 23a constituting the wide inner layer are folded back, and as a result, the band 23
A concave portion 23c is formed at the center of the outer peripheral surface of “a”. The strip 23b constituting the outer layer is disposed in the recess 23c. In the inner layer band 23a and the outer layer band 23b, each tire cord 1 is, for example, 25% in the circumferential direction of the tire 20.
It is desirable to extend in mutually opposite directions with a degree angle.
【００１７】タイヤ２０は、その内部にカーカスコード
２４を備え、そのカーカスコード２４はタイヤ２０の半
径方向にほぼ平行に配置されている。ビードワイヤ２５
は、タイヤ２０のビード部に配置されている。ブレーカ
ベルト２１は、タイヤ２０のトレッド部にカーカスコー
ド２４を取り巻くようにして配置され、その幅がトレッ
ド部の幅とほぼ同一となっている。また、ブレーカベル
ト２１の外周域には、所定間隔をおいてタイヤ２０の周
方向に螺旋巻きされたキャップ２６が埋設されている。The tire 20 has a carcass cord 24 therein, and the carcass cord 24 is arranged substantially parallel to the radial direction of the tire 20. Bead wire 25
Are arranged at the bead portion of the tire 20. The breaker belt 21 is arranged so as to surround the carcass cord 24 on the tread portion of the tire 20, and has a width substantially equal to the width of the tread portion. Further, a cap 26 spirally wound in the circumferential direction of the tire 20 is embedded at a predetermined interval in the outer peripheral area of the breaker belt 21.
【００１８】以上、本実施形態のタイヤコード１は、次
のような利点を有する。 ○ 線材２には、圧延機６によって形成される変形断面
部４と、元来の形状である円形断面部３とが交互に配さ
れ、ウェーブ成形機１０により長手方向へ上下に揺れる
波形が付与されている。この線材２よりなるタイヤコー
ド１は、その長手方向への抵抗力については、線材２に
付与される波形によって対応し、長手方向に直交する方
向（変形断面部４の断面における長軸方向）への抵抗力
については主に変形断面部４が対応する。このため、タ
イヤ加硫時及び空気圧による静的荷重、又は走行遠心力
による動的荷重に対して、波形が径成長応力を充分に吸
収できると共に、走行変更等に伴う横剛性に対しては、
変形断面部４で充分に保証することができる。As described above, the tire cord 1 of the present embodiment has the following advantages. The deformed cross-sections 4 formed by the rolling mill 6 and the circular cross-sections 3 having the original shape are alternately arranged on the wire 2, and the wave forming machine 10 imparts a waveform that swings up and down in the longitudinal direction. Have been. The tire cord 1 made of the wire 2 has a resistance in the longitudinal direction corresponding to the waveform applied to the wire 2 and is directed in a direction orthogonal to the longitudinal direction (a major axis direction in the cross section of the deformed cross section 4). Mainly corresponds to the deformed cross section 4. For this reason, the waveform can sufficiently absorb the radial growth stress at the time of tire vulcanization and a static load due to air pressure, or a dynamic load due to traveling centrifugal force, and the transverse rigidity due to traveling change, etc.
The deformed cross-section 4 can be sufficiently guaranteed.
【００１９】○ 例えばブレーカベルト２１等、タイヤ
コード１をタイヤ２０の各部位に使用する場合（図６参
照）、並列配置されるタイヤコード１の変形断面部４
を、すべて同方向に向かって延びるように整然と整列さ
せることができる。When the tire cord 1 such as a breaker belt 21 is used for each part of the tire 20 (see FIG. 6), the deformed cross section 4 of the tire cords 1 arranged in parallel is used.
Can be neatly aligned so that they all extend in the same direction.
【００２０】尚、本実施形態は、次のように変更して具
体化することも可能である。 （変更例） 上記実施形態では、変形断面部４の外表面
に、平面を有するように構成されていたが、図４（Ｂ）
に示すように、変形断面部４の断面を楕円形状に形成し
てもよい。このように構成しても上記実施形態と同様の
効果を得ることができると共に、タイヤコード１を同方
向に向かって確実に整列させることができる。従って、
タイヤに埋設されたタイヤコード１は乱れることなく、
整然と配されるため、予定される機能を充分に発揮する
ことができる。The present embodiment can be embodied with the following modifications. (Modification) In the above embodiment, the outer surface of the deformed cross section 4 is configured to have a flat surface, but FIG.
As shown in FIG. 7, the cross section of the deformed cross section 4 may be formed in an elliptical shape. With such a configuration, the same effects as those of the above embodiment can be obtained, and the tire cords 1 can be reliably aligned in the same direction. Therefore,
The tire cord 1 embedded in the tire is not disturbed,
Since they are arranged neatly, expected functions can be sufficiently exhibited.
【００２１】[0021]
【発明の効果】この発明は、以上のように構成されてい
るため、次のような効果を奏する。請求項１の発明によ
れば、タイヤコードの長手方向への抵抗力については、
線材に付与される波形によって対応し、長手方向に直交
する方向への抵抗力については、主に変形断面部が対応
する。このように性質の異なる両者が交互に配されるこ
とにより、互いの性質を支えつつ、タイヤコードの両方
向への剛性を高めることができる。従って、特に、操縦
安定性という性能面において優れたタイヤを製造するた
めに貢献するタイヤコードを提供することができる。The present invention is configured as described above, and has the following effects. According to the invention of claim 1, the resistance in the longitudinal direction of the tire cord is:
Corresponding to the waveform applied to the wire, and the resistance in the direction perpendicular to the longitudinal direction mainly corresponds to the deformed cross section. By alternately arranging the tire cords having different properties in this way, it is possible to increase the rigidity of the tire cord in both directions while supporting each other. Accordingly, it is possible to provide a tire cord that contributes to manufacturing a tire excellent in performance, particularly in terms of steering stability.
【００２２】請求項２の発明によれば、請求項１の発明
の効果に加えて、複数のタイヤコードを並列配置する場
合に、変形断面部が同方向に向かって整然と配置させる
ことを確実に保証することができる。According to the second aspect of the present invention, in addition to the effect of the first aspect of the invention, when a plurality of tire cords are arranged in parallel, it is ensured that the deformed cross sections are arranged neatly in the same direction. Can be guaranteed.
【００２３】請求項３の発明によれば、請求項１の発明
の効果に加えて、変形断面部の断面における長軸方向へ
の抵抗力を高めたタイヤコードを提供することができ
る。従って、例えばこのタイヤコードがブレーカベルト
に採用されると、タイヤの横剛性の向上を図ることがで
きる。According to the third aspect of the present invention, in addition to the effect of the first aspect of the present invention, it is possible to provide a tire cord having an increased resistance in a longitudinal direction in a cross section of a deformed cross section. Therefore, for example, when this tire cord is adopted for a breaker belt, the lateral rigidity of the tire can be improved.
【図１】本実施形態のタイヤコードを示す部分斜視図。FIG. 1 is a partial perspective view showing a tire cord according to an embodiment.
【図２】製造過程中のタイヤコードで、（Ａ）は変形断
面部の形成後、（Ｂ）はゴム被覆後、（Ｃ）はウェーブ
形成後をそれぞれ示す部分断面図。FIG. 2 is a partial cross-sectional view showing a tire cord in a manufacturing process, in which (A) shows a deformed cross section, (B) shows a rubber coating, and (C) shows a wave.
【図３】タイヤコードの製造過程を示す平面図。FIG. 3 is a plan view showing a manufacturing process of the tire cord.
【図４】変形断面部の断面図で、（Ａ）は本実施形態の
変形断面部に従い、（Ｂ）は、変更例の変形断面部に従
う。4A and 4B are cross-sectional views of a modified cross section, where FIG. 4A is a modified cross section of the present embodiment, and FIG.
【図５】本実施形態におけるタイヤの破断斜視図。FIG. 5 is a cutaway perspective view of the tire according to the embodiment.
【図６】本実施形態のブレーカベルトを示す部分破断斜
視図。FIG. 6 is a partially broken perspective view showing the breaker belt of the embodiment.
１…タイヤコード、２…線材、３…円形断面部、４…変
形断面部、５…ゴム。DESCRIPTION OF SYMBOLS 1 ... tire cord, 2 ... wire, 3 ... circular cross section, 4 ... deformed cross section, 5 ... rubber
Claims (3)
と共に、所望の二次元の波形が付与され、更に、当該線
材の長手方向に円形断面部と変形断面部とが所望ピッチ
で交互に配置されていることを特徴とするタイヤコー
ド。1. A wire made of metal is coated with rubber and has a desired two-dimensional waveform, and a circular cross section and a deformed cross section are alternately formed at a desired pitch in the longitudinal direction of the wire. A tire cord which is arranged.
に形成され、前記波形は、当該楕円形状の短軸方向に揺
れるように付与されていることを特徴とする請求項１に
記載のタイヤコード。2. The modified cross-sectional portion according to claim 1, wherein the cross-section is formed in an elliptical shape, and the waveform is applied so as to swing in the minor axis direction of the elliptical shape. Tire cord.
円形状の長軸と平行な平面を有している請求項１又は２
に記載のタイヤコード。3. The deformed cross section has a plane parallel to a major axis of the elliptical shape on an outer peripheral surface thereof.
Tire cord described in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14785597A JP3676038B2 (en) | 1997-06-05 | 1997-06-05 | Tire cord |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14785597A JP3676038B2 (en) | 1997-06-05 | 1997-06-05 | Tire cord |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH111880A true JPH111880A (en) | 1999-01-06 |
| JP3676038B2 JP3676038B2 (en) | 2005-07-27 |
Family
ID=15439790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14785597A Expired - Fee Related JP3676038B2 (en) | 1997-06-05 | 1997-06-05 | Tire cord |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3676038B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000071809A1 (en) * | 1999-05-24 | 2000-11-30 | Tokyo Rope Mfg. Co., Ltd. | Single wire steel cord and method of producing the same |
| KR100618018B1 (en) | 2005-02-21 | 2006-08-31 | 주식회사 효성 | a performing method for filament of steel cord for reinforcing rubber product |
| EP1712376A3 (en) * | 1999-07-07 | 2007-02-21 | Sumtiomo Rubber Industries Ltd | Pneumatic tyre |
| WO2016083091A1 (en) * | 2014-11-27 | 2016-06-02 | Nv Bekaert Sa | Off-the-road steel cord |
-
1997
- 1997-06-05 JP JP14785597A patent/JP3676038B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000071809A1 (en) * | 1999-05-24 | 2000-11-30 | Tokyo Rope Mfg. Co., Ltd. | Single wire steel cord and method of producing the same |
| EP1712376A3 (en) * | 1999-07-07 | 2007-02-21 | Sumtiomo Rubber Industries Ltd | Pneumatic tyre |
| KR100618018B1 (en) | 2005-02-21 | 2006-08-31 | 주식회사 효성 | a performing method for filament of steel cord for reinforcing rubber product |
| WO2016083091A1 (en) * | 2014-11-27 | 2016-06-02 | Nv Bekaert Sa | Off-the-road steel cord |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3676038B2 (en) | 2005-07-27 |
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