KR100553080B1 - Pneumatic tire having improved bead durabillty - Google Patents

Pneumatic tire having improved bead durabillty Download PDF

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Publication number
KR100553080B1
KR100553080B1 KR1020040093275A KR20040093275A KR100553080B1 KR 100553080 B1 KR100553080 B1 KR 100553080B1 KR 1020040093275 A KR1020040093275 A KR 1020040093275A KR 20040093275 A KR20040093275 A KR 20040093275A KR 100553080 B1 KR100553080 B1 KR 100553080B1
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South Korea
Prior art keywords
bead
carcass
filler
core
present
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KR1020040093275A
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Korean (ko)
Inventor
전호남
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한국타이어 주식회사
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Priority to KR1020040093275A priority Critical patent/KR100553080B1/en
Priority to CNA2005101232793A priority patent/CN1775572A/en
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Publication of KR100553080B1 publication Critical patent/KR100553080B1/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
    • B60C15/02—Seating or securing beads on rims
    • 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
    • B60C15/0009—Tyre beads, e.g. ply turn-up or overlap features of the carcass terminal 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
    • B60C15/04—Bead cores
    • 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
    • B60C15/0603—Flipper strips, fillers, or chafing strips and reinforcing layers for the construction of the bead characterised by features of the bead filler or apex

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Tires In General (AREA)
  • Tyre Moulding (AREA)

Abstract

본 발명은 비드코아에 턴업설치되는 카카스의 움직임을 최소화시켜 비드부에서 발생되는 세파레이션을 방지하고, 비드부를 구성하는 구성요소를 절감시킬 수 있게 하는 비드 내구성을 향상시킨 공기입 타이어에 관한 것이다.The present invention relates to a pneumatic tire having improved bead durability to minimize the movement of the carcass turn-up installed in the bead core to prevent separation generated in the bead portion, and to reduce the components constituting the bead portion .

종래 카카스의 단부에서 발생되는 전단응력에 대응하기 위하여 카카스의 단부에 여러 종류의 보강재를 설치시키는 것이 시도되었으나 그 효과가 미비하고, 비드부(3)의 두께가 필요이상으로 커지는 문제점과 제조비용을 상승시키는 문제점이 있었던 바, 본 발명은 Conventionally, in order to cope with the shear stress generated at the end of the carcass, various kinds of reinforcement materials have been attempted at the end of the carcass. As a result of raising the cost, the present invention

트래드(1)와 사이드월(2) 및 비드부(3)로 구성되고, 상기 비드부(3)가 비트코아(30)와 비드필러(31)로 형성되며, 상기 비드필러(31)가 하부필러(311)와 상부필러(312)로 형성되고, 비드코아(30)에 카카스(4)가 턴업 설치되는 것에 있어서, 상기 카카스(4)의 단부를 등간격으로 절취시켜 일측단(41)은 하부비드필러(311)와 상부비드필러(312)의 사이에 설치시키고, 또 다른 일측단(42)은 상부비드필러(312)의 외측면에 접하도록 설치시켜 구성함으로써, 비드부를 구성하는 구성요소를 절감시켜 제조공정과 제조비용을 절감시킬 수 있음은 물론 비드코아에 턴업설치되는 카카스의 움직임을 최소화시켜 비드부에서 발생되는 세파레이션을 방지하여 비드부의 내구성을 대폭적으로 향상시킬 수 있는 효과가 있는 것임.Composed of a tread (1), sidewall (2) and bead portion (3), the bead portion (3) is formed of a bit core 30 and bead filler (31), the bead filler (31) It is formed of a filler 311 and the upper filler 312, the carcass 4 is turned up on the bead core 30, the end of the carcass 4 is cut at equal intervals to one side end 41 ) Is installed between the lower bead filler 311 and the upper bead filler 312, and another side end 42 is configured to contact the outer surface of the upper bead filler 312, thereby constituting the bead portion By reducing the components, the manufacturing process and manufacturing cost can be reduced, and the movement of the carcass that is turned up and installed in the bead core can be minimized to prevent separation from the bead part, thereby greatly improving the durability of the bead part. It is effective.

Description

비드 내구성을 향상시킨 공기입 타이어{Pneumatic tire having improved bead durabillty} Pneumatic tire having improved bead durabillty             

도 1 은 일반적인 타이어를 발췌 도시한 단면도1 is a cross-sectional view showing a typical tire

도 2 는 종래에 있어서의 비드부를 발췌 도시한 단면도2 is a cross-sectional view showing a bead portion in the prior art

도 3 은 본 발명의 요부인 카카스를 발췌 도시한 사시도Figure 3 is a perspective view showing the excerpt of the carcass of the present invention

도 4 는 본 발명의 비드부를 발췌 도시한 단면도Figure 4 is a cross-sectional view showing the bead portion of the present invention

<도면의 주요 부분에 대한 부호의 설명><Explanation of symbols for the main parts of the drawings>

1. 트래드 2. 사이드월1. Tread 2. Sidewall

3. 비드부 4. 카카스3. Bead part 4. Carcass

본 발명은 비드 내구성을 향상시킨 공기입 타이어에 관한 것으로, 더욱 상세하게는 비드코아에 턴업설치되는 카카스의 움직임을 최소화시켜 비드부에서 발생되는 세파레이션을 방지하고, 비드부를 구성하는 구성요소를 절감시킬 수 있게 하는 비드 내구성을 향상시킨 공기입 타이어에 관한 것이다.The present invention relates to a pneumatic tire with improved bead durability, and more particularly, to minimize the movement of the carcass turn-up installed in the bead core to prevent separation generated in the bead portion, to provide a component constituting the bead portion It relates to a pneumatic tire with improved bead durability that can be saved.

일반적으로 타이어의 비드부는 첨부된 도면 도 1 에 도시되는 바와 같이, 다수의 강력한 와이어로 형성되는 비드코아(30)를 중심으로 카카스(4)가 래디알 방향으로 감싸지며, 비드코아(30)와 이에 감싸여진 카카스(4) 사이의 공간내에는 서로 다른 2종이상의 고무로 형성되는 상부비드필러(312)와 하부비드필러(311)가 설치되고, 상기 카카스(4) 단부의 외측에는 다수의 보강재가 설치되어 구성된다.In general, the bead portion of the tire, as shown in the accompanying drawings, Figure 1, around the bead core 30 is formed of a plurality of powerful wire is wrapped around the carcass 4 in the radial direction, bead core 30 The upper bead filler 312 and the lower bead filler 311 formed of two or more different rubbers are installed in the space between the carcass 4 and the carcass 4 wrapped therein, and the outer side of the end of the carcass 4 is provided. Multiple reinforcements are installed and configured.

타이어가 하중을 받은 상태에서 주행을 하면 비드부(3)는 횡방향으로 운동을 하게 되고, 타이어의 골격인 카카스(4)는 인장과 압축운동을 반복하게 되며, 이때 비드코아(30) 및 비드필러(31)에 감싸여 설치되는 카카스(4)의 단부에는 전단응력이 집중적으로 발생된다.When the tire is running under the load, the bead part 3 moves in the lateral direction, and the carcass 4, which is the skeleton of the tire, repeats the tension and compression movements, wherein the bead core 30 and Shear stress is concentrated at the end of the carcass 4 wrapped around the bead filler 31.

이렇게 카카스(4)의 단부에서 발생되는 전단응력은 타이어의 내구성과 직결되는 것으로 카카스(4)의 단부에서 발생되는 세파레이션의 주된 요인이다.The shear stress generated at the end of the carcass 4 is directly related to the durability of the tire and is a main factor of the separation generated at the end of the carcass 4.

종래 카카스(4)의 단부에서 발생되는 전단응력에 대응하기 위하여 카카스의 단부에 여러 종류의 보강재를 설치시키는 것이 시도되었으나 그 효과가 미비하고, 비드부(3)의 두께가 필요이상으로 커지는 문제점과 제조비용을 상승시키는 문제점이 있었다. In order to cope with the shear stress generated at the end of the carcass 4, it has been attempted to install various kinds of reinforcement at the end of the carcass, but the effect is inadequate, and the thickness of the bead part 3 becomes larger than necessary. There was a problem that raises the problem and manufacturing cost.

또한 도 2 에서와 같이, 카카스의 단부를 상부비드필러(312)와 하부비드필러(311)의 사이에 매립 설치시키는 기술이 시도되었으나 기대하는 만큼의 효과를 얻을 수 없었다.In addition, as shown in FIG. 2, a technique of embedding the end of the carcass between the upper bead filler 312 and the lower bead filler 311 was attempted, but the effect as expected was not obtained.

본 발명은 상기와 같은 종래의 문제점을 해결하기 위한 것으로서, 본 발명은 비드코아에 턴업설치되는 카카스의 움직임을 최소화시켜 비드부에서 발생되는 세파레이션을 방지하고, 비드부를 구성하는 구성요소를 절감시켜 제조공정과 제조비용을 절감시킬 수 있게 하는 비드내구성을 향상시킨 공기입 타이어를 제공함에 그 목적이 있다.The present invention is to solve the conventional problems as described above, the present invention to minimize the movement of the carcass is turned up in the bead core to prevent separation generated in the bead portion, reducing the components constituting the bead portion It is an object of the present invention to provide a pneumatic tire having improved bead durability that can reduce the manufacturing process and manufacturing cost.

본 발명은 상기와 같은 목적을 달성하기 위하여 다음과 같이 구성된다. 즉, 본 발명은 트래드와 사이드월 및 비드부로 구성되고, 상기 비드부가 비트코아와 비드필러로 형성되며, 상기 비드필러가 하부필러와 상부필러로 형성되고, 비드코아에 카카스가 턴업 설치되는 것에 있어서, 상기 카카스의 단부를 등간격으로 절취시켜 일단은 하부비드필러와 상부비드필러의 사이에 설치시키고, 또 다른 일단은 상부비드필러의 외측면에 접하도록 설치시켜 구성되는 것에 특징을 둔 것이다.
The present invention is configured as follows to achieve the above object. That is, the present invention comprises a tread, a sidewall and a bead portion, wherein the bead portion is formed of a bit core and bead filler, the bead filler is formed of a lower filler and an upper filler, carcass is turned up on the bead core In this case, the end of the carcass is cut at equal intervals so that one end is installed between the lower bead filler and the upper bead filler, and the other end is installed so as to contact the outer surface of the upper bead filler. .

이하에서는 첨부된 도면을 참조하여 본 발명의 바람직한 실시 예를 상세히 설명하기로 한다.Hereinafter, with reference to the accompanying drawings will be described a preferred embodiment of the present invention;

첨부된 도면 도 3 은 본 발명의 요부인 카카스를 발췌 도시한 사시도이고, 도 4 는 본 발명의 비드부를 발췌 도시한 단면도이다.3 is a perspective view showing an extract of carcass, which is a main part of the present invention, and FIG. 4 is a sectional view showing an extract of the bead portion of the present invention.

도 3 및 도 4 에 도시되는 바와 같이, 본 발명은 트래드(1)와 사이드월(2) 및 비드부(3)로 구성되고, 상기 비드부(3)가 비트코아(30)와 비드필러(31)로 형성되며, 상기 비드필러(31)가 하부필러(311)와 상부필러(312)로 형성되고, 비드코아(30)에 카카스(4)가 턴업 설치되는 것에 있어서, 상기 카카스(4)의 단부를 등간격으로 절취시켜 일단(41)은 하부비드필러(311)와 상부비드필러(312)의 사이에 설치시키고, 또 다른 일단(42)은 상부비드필러(312)의 외측면에 접하도록 설치시켜 구성되는 것이다.As shown in FIG. 3 and FIG. 4, the present invention is composed of a tread 1, a sidewall 2, and a bead part 3, wherein the bead part 3 comprises a bit core 30 and a bead filler ( 31, wherein the bead filler 31 is formed of a lower filler 311 and an upper filler 312, the carcass 4 is turned up on the bead core 30, the carcass ( The end of 4) is cut at equal intervals so that one end 41 is installed between the lower bead filler 311 and the upper bead filler 312, and another end 42 is an outer surface of the upper bead filler 312. It is configured to be installed in contact with.

이와 같이 구성되는 본 발명은 타이어가 하중을 받은 상태에서 주행을 하는 과정에서 타이어의 골격인 카카스(4)가 인장과 압축운동을 반복하며 카카스 단부가 움직이려고 하나 카카스의 일단(41)은 상하부 비드필러(312)(311)의 내부에 매립 설치되고, 또 다른 일단(42)는 상부비드필러(312)의 외측에 설치됨에 따라 카카스(4)의 단부에서 전단응력이 분산되어 카카스(4) 단부의 움직임을 최소화시킬 수 있게 되는 것이다.In the present invention constituted as described above, the carcass 4, which is the skeleton of the tire, repeats the tension and compression movement while the carcass end is about to move, but one end of the carcass 41 is The upper and lower bead fillers 312 and 311 are buried in the interior, and another end 42 is installed outside the upper bead filler 312, so that shear stress is dispersed at the end of the carcass 4 so that the carcass (4) It is possible to minimize the movement of the end.

이와 같이 카카스(4)단부의 움직임이 억제됨으로서, 종래에서와 같이 카카스 (4)단부에 다수의 보강재를 설치시키지 않아도 되어 제조공정을 줄이면서도 비드부 의 내구성을 향상시킬 수 있는 것이다.As the movement of the end of the carcass 4 is suppressed as described above, it is not necessary to install a plurality of reinforcing materials at the end of the carcass 4 as in the conventional art, thereby reducing the manufacturing process and improving the durability of the bead part.

본 발명은 전술한 실시 예에 한정되지 않고 본 발명의 기술사상이 허용하는 범위 내에서 다양하게 변형하여 실시할 수가 있다. The present invention is not limited to the above embodiments, and various modifications can be made within the scope allowed by the technical idea of the present invention.

이상에서와 같이 본 발명에 따르면 비드부를 구성하는 구성요소를 절감시켜 제조공정과 제조비용을 절감시킬 수 있음은 물론 비드코아에 턴업설치되는 카카스의 움직임을 최소화시켜 비드부에서 발생되는 세파레이션을 방지하여 비드부의 내구성을 대폭적으로 향상시킬 수 있는 효과가 있다.









As described above, according to the present invention, it is possible to reduce the components constituting the bead part, thereby reducing the manufacturing process and manufacturing cost, as well as minimizing the movement of the carcass turned up in the bead core, thereby reducing the separation generated in the bead part. There is an effect that can significantly improve the durability of the bead portion.









Claims (1)

트래드(1)와 사이드월(2) 및 비드부(3)로 구성되고, 상기 비드부(3)가 비트코아(30)와 비드필러(31)로 형성되며, 상기 비드필러(31)가 하부필러(311)와 상부필러(312)로 형성되고, 비드코아(30)에 카카스(4)가 턴업 설치되는 것에 있어서, 상기 카카스(4)의 단부를 등간격으로 절취시켜 일단(41)은 하부비드필러(311)와 상부비드필러(312)의 사이에 설치시키고, 또 다른 일단(42)은 상부비드필러(312)의 외측면에 접하도록 설치시켜 구성되는 것을 특징으로 하는 비드 내구성을 향상시킨 공기입 타이어.Composed of a tread (1), sidewall (2) and bead portion (3), the bead portion (3) is formed of a bit core 30 and bead filler (31), the bead filler (31) It is formed of the filler 311 and the upper filler 312, the carcass 4 is turned up on the bead core 30, the end of the carcass 4 is cut at equal intervals to one end 41 Silver bead is installed between the lower bead filler 311 and the upper bead filler 312, and another end 42 is installed to contact the outer surface of the upper bead filler 312 is characterized in that the bead durability Improved pneumatic tires.
KR1020040093275A 2004-11-15 2004-11-15 Pneumatic tire having improved bead durabillty KR100553080B1 (en)

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CNA2005101232793A CN1775572A (en) 2004-11-15 2005-11-15 Inflated tyre capable of increasing tyre bead

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Cited By (1)

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Publication number Priority date Publication date Assignee Title
WO2016093962A1 (en) * 2014-12-09 2016-06-16 Bridgestone Americas Tire Operations, Llc Tire with bead regions having multiple bead fillers

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100812060B1 (en) * 2006-12-06 2008-03-07 한국타이어 주식회사 Pneumatic tire improved bead member
FR2999474B1 (en) * 2012-12-13 2016-03-11 Michelin & Cie PNEUMATIC BOURRELET FOR HEAVY VEHICLE TYPE GENIE CIVIL

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JPH03169712A (en) * 1989-11-30 1991-07-23 Sumitomo Rubber Ind Ltd Pneumatic tire
JPH0825921A (en) * 1994-07-18 1996-01-30 Bridgestone Corp Pneumatic radial tire for heavy load

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JPH03169712A (en) * 1989-11-30 1991-07-23 Sumitomo Rubber Ind Ltd Pneumatic tire
JPH0825921A (en) * 1994-07-18 1996-01-30 Bridgestone Corp Pneumatic radial tire for heavy load

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016093962A1 (en) * 2014-12-09 2016-06-16 Bridgestone Americas Tire Operations, Llc Tire with bead regions having multiple bead fillers
EP3230092A4 (en) * 2014-12-09 2018-07-25 Bridgestone Americas Tire Operations, LLC Tire with bead regions having multiple bead fillers
US10583696B2 (en) 2014-12-09 2020-03-10 Bridgestone Americas Tire Operations, Llc Tire with bead regions having multiple bead fillers

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