KR100792997B1 - Radial tire for truck and bus - Google Patents

Radial tire for truck and bus Download PDF

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Publication number
KR100792997B1
KR100792997B1 KR1020060116383A KR20060116383A KR100792997B1 KR 100792997 B1 KR100792997 B1 KR 100792997B1 KR 1020060116383 A KR1020060116383 A KR 1020060116383A KR 20060116383 A KR20060116383 A KR 20060116383A KR 100792997 B1 KR100792997 B1 KR 100792997B1
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KR
South Korea
Prior art keywords
carcass
cacas
truck
code
tire
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Application number
KR1020060116383A
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Korean (ko)
Inventor
천윤창
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한국타이어 주식회사
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Priority to KR1020060116383A priority Critical patent/KR100792997B1/en
Priority to CN200710194836XA priority patent/CN101186166B/en
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Publication of KR100792997B1 publication Critical patent/KR100792997B1/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
    • B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
    • B60C9/02—Carcasses
    • 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
    • B60C9/02—Carcasses
    • B60C9/04—Carcasses the reinforcing cords of each carcass ply arranged in a substantially parallel relationship
    • B60C2009/0491—Carcasses the reinforcing cords of each carcass ply arranged in a substantially parallel relationship with special path of the carcass cords, e.g. sinusoidal
    • 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
    • B60C2200/00—Tyres specially adapted for particular applications
    • B60C2200/06—Tyres specially adapted for particular applications for heavy duty vehicles

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

Abstract

A radial tire for a truck and a bus is provided to reduce separation phenomenon between layers constituting the tire by installing a wave-shape section at a bead section that is rarely deformed by air pressure. A radial tire for a truck and a bus comprises a tread(1), a sidewall(2) and bead sections(3,31). A cacas(4) is installed between the bead sections(3,31). The code of the cacas(4) is made from a wire. A part of the cacas code has a wave shape. The wave-shape section formed in the cacas code has a length within the range of 20mm to 30mm. The waveform direction of the cacas code is horizontal to a cacas surface or is perpendicular to the cacas surface. The wave-shape section has an amplitude twice or three times as large as the diameter of the cacas wire.

Description

트럭 버스용 래디알 타이어{Radial Tire for Truck and Bus}Radial Tire for Truck and Bus

도 1 은 본 발명의 타이어에 있어서의 요부 발췌 단면도BRIEF DESCRIPTION OF THE DRAWINGS The main part excerpt cross section in the tire of this invention.

도 2 는 카카스의 코드 일부 발췌도Figure 2 is a partial excerpt of the code of the carcass

<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>

1.트레드1.Tread

2. 사이드월2. Sidewall

3, 31. 비드부3, 31.Bead part

4. 카카스4. Carcass

5. 코드5. Code

6. 에지6. Edge

본 발명은 트럭 버스용 타이어에 관한 것으로 특히 카카스의 코드를 스틸로 형성시켜서 된 타이어에 관한 것이다. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to tires for truck buses and, more particularly, to tires made of steel carcass cord.

타이어에 공기압이 가해지면 그 공기압은 이를 카카스가 지탱하게 되며, 카카스 중 이런 공기압을 지탱하게 하는 주요소는 카카스에 매입된 코드이다. 따라서, 공기압에 의한 압력은 결국 카카스 코드가 이를 지탱하는 셈이다. When pneumatic pressure is applied to the tire, it is supported by the carcass, which is the major component of the carcass that is supported by the carcass. Therefore, the pressure caused by air pressure is ultimately supported by the carcass cord.

공기입 타이어에 있어서는, 주행 중에 가하여지는 공기압이 수시로 변화하며 또 일시적으로 과도한 압력이 가해지기도 한다. 카카스 코드가 섬유로 된 타이어에 있어서는 그러한 압력 변화를 신축 가능한 코드가 이를 수용할 수 있으나, 코드가 스틸로 형성된 타이어에 있어서는 스틸 코드에 가해지는 장력을 흡수할 길이 없어 스틸코드에 가하여지는 장력이 변화함에 따라 또 장력이 일시적으로 과도함에 따라 스틸 코드의 강도가 저하되는 문제가 있다. In pneumatic tires, the air pressure applied during traveling changes from time to time, and excessive pressure is temporarily applied. For tires made of carcass cords, the cord can accommodate such pressure changes, but for tires with cords made of steel, there is no way to absorb the tension applied to the steel cords. There is a problem that the strength of the steel cord is lowered as the tension is excessively changed as it changes.

그리하여, 종래에는 카카스 코드 중 일부를 파형으로 형성시킴으로서 카카스 코드에 가해지는 변화 장력을 흡수하도록 한 타이어가 JP 1999-042909호로 제공된 바 있다. 그런데 이와 같이 카카스 코드의 일부를 파형으로 형성시킨 종래의 타이어는 그 파형부를 트레드부의 벨트 저부에 형성시켰던 바, 벨트층의 저부에서 카카스가 신축 운동을 하게 되면 카카스층과 벨트층의 분리 현상을 가속화시키는 중대한 결점이 있음을 알았다. Thus, in the related art, tires which are adapted to absorb a change tension applied to the carcass cord by forming a part of the carcass cord into a waveform have been provided in JP 1999-042909. However, in the conventional tire in which a part of the carcass cord is formed into a wave, the corrugation part is formed in the belt bottom of the tread. When the carcass is stretched at the bottom of the belt layer, the carcass layer and the belt layer are separated. It was found that there was a significant shortcoming that accelerated the phenomenon.

이에 본 발명은, 위 선행기술에 있어서와 같이 카카스 코드 중의 일부를 파형으로 형성시키되 그 파형부 설치 위치를, 신축에 의한 층간 분리현상 발생 염려가 가장 적은 부위인 카카스 턴업 에지를 중심으로 상하 30cm 범위로 설정함으로서, 파형의 카카스 코드가 변화하는 장력을 흡수하여 코드의 강도 저하 현상을 감소시키면서 타이어를 구성하는 층간의 분리 현상을 감소시킬 수 있게 한 것인 바, 이와 같은 본 발명을 첨부된 도면에 의하여 설명하면 다음과 같다.Accordingly, the present invention, while forming a portion of the carcass code as a waveform as in the prior art above, the position of the corrugated portion is installed, the upper and lower centering around the carcass turn-up edge of the least concern about the occurrence of delamination due to expansion By setting it in the 30 cm range, it is possible to reduce the separation phenomenon between the layers constituting the tire while absorbing the changing tension of the corrugated carcass cord to reduce the strength of the cord, attached to the present invention Referring to the drawings as follows.

트레드(1)와 사이드월(2) 및 비드부(3)로 구성되고, 비드부(3)와 타측 비드부(31) 사이에 카카스(4)를 설치하며, 카카스(4)의 코드(5)가 와이어로 구성되고, 와이어로 된 카카스 코드(5)의 일부가 파형부로 된 것에 있어서, 본 발명은 위 파형부가, 카카스 턴업 에지(6)를 중심으로 상하 총길이 20~30mm 범위로 설정된 것을 특징으로 한다.It consists of a tread 1, a side wall 2 and a bead part 3, a carcass 4 is provided between the bead part 3 and the other bead part 31, and the cord of the carcass 4 is provided. (5) is composed of a wire, and a part of the carcass cord 5 made of a wire is a corrugated portion, in the present invention, the upper corrugated portion is a total length of 20 ~ 30mm up and down around the carcass turn-up edge (6) Characterized in that set to.

본 발명자는, 타이어 중 공기압에 의한 신축 변화가 가장 적은 부분이 비드부임을 알았으며, 그리하여 위와 같은 카카스코드의 파형부는 비드부 가까이에 설치하는 것이 바람직함을 알았다. 그리고, 비드부 가까운 부위 중에서도 그러한 파형부가 카카스 턴업 에지부의 분리현상을 야기하지 아니하도록 파형부 중심을 턴업 에지부에 두는 것이 효과적임을 알았다.The present inventors found that the portion of the tire having the smallest change in stretching due to the air pressure is the bead portion, and therefore, it is preferable to install the corrugated portion of the carcass cord as described above near the bead portion. Also, it was found that it is effective to place the center of the corrugated portion at the turn-up edge portion such that the corrugated portion does not cause separation of the carcass turn-up edge portion even in the portion near the bead portion.

그리고 본 발명은 파형인 카카스 코드의 진폭 방향을 카카스 면에 수평으로 형성시킨 타이어와 또 카카스면에 수징인 타이어를 제공한다. 또한 본 발명은 카카스 코드의 파형부가 코일과 같이 감긴 형태로 형성된 타이어를 제공한다.The present invention also provides a tire in which the amplitude direction of the corrugated carcass cord is formed horizontally on the carcass surface and a tire hydrated on the carcass surface. In another aspect, the present invention provides a tire formed in a form in which the corrugated portion of the carcass cord is wound like a coil.

위와 같은 파형부의 파형 진폭은 카카스 와이어 직경의 2~3배로 형성시키는 것이 바람직하다. 위 선행기술에 있어서와 같이 그 진폭을 코드 직경의 4~8배로 형성시키는 경우 충격흡수효과가 우수하기는 하지만 층간 분리현상을 야기할 염려가 크기 때문이다.It is preferable to form the waveform amplitude of the above-described corrugated portion at two to three times the diameter of the carcass wire. When the amplitude is formed as 4 ~ 8 times the diameter of the cord as in the prior art, but the shock absorption effect is excellent, but there is a high risk of causing interlayer separation.

이와 같은 본 발명은, 카카스 코드 중 일부를 파형으로 형성시킴으로서 파형의 카카스 코드가 변화하는 장력을 흡수하여 코드의 강도 저하 현상을 감소시키면서, 이러한 파형부를 공기압에 의한 변형이 가장 적은 부위인 비드부 가까이에 형성시키되, 그 설치부를 카카스 턴업 에지를 중심으로 상하 30cm 이하 범위로 설정함으로서, 타이어를 구성하는 층간의 분리 현상을 감소시킬 수 있게 하는 효과가 있다.In the present invention, by forming a portion of the carcass code into a waveform, the bead is a portion of the wave portion is the least deformation by the air pressure while absorbing the tension that changes the carcass code of the waveform to reduce the strength of the cord Although formed near the portion, by setting the installation portion in the upper and lower range 30cm or less around the carcass turn-up edge, there is an effect that it is possible to reduce the separation phenomenon between the layers constituting the tire.

Claims (4)

트레드(1)와 사이드월(2) 및 비드부(3, 31)로 구성되고, 비드부(3)와 비드부(31) 사이에 카카스(4)를 설치하며, 카카스(4)의 코드(5)가 와이어로 구성되고, 와이어로 된 카카스 코드(5)의 일부가 파형부로 된 것에 있어서, 위 파형부가, 카카스 턴업 에지(6)를 중심으로 상하 총길이 20~30mm 범위로 설정된 것임을 특징으로 하는 트럭 버스용 래디알 타이어.It consists of a tread (1), sidewalls (2) and bead portions (3, 31), the carcass (4) is provided between the bead portion (3) and the bead portion (31), the carcass (4) The cord 5 consists of a wire, and a part of the carcass cord 5 made of the wire becomes a corrugation part, and the upper corrugation part is set in the range of 20-30 mm in total length up and down about the carcass turn-up edge 6. Radial tires for truck buses, characterized in that. 제1항에 있어서, 파형부의 카카스 코드의 파형 진폭 방향을 카카스 면에 수평으로 형성시켜서 된 것을 특징으로 하는 트럭 버스용 래디알 타이어.The truck tire radial tire according to claim 1, wherein the waveform amplitude direction of the carcass code of the corrugation portion is formed horizontally on the carcass surface. 제2항에 있어서, 파형부의 카카스 코드의 파형 진폭 방향을 카카스 면에 수직으로 형성시켜서 된 것을 특징으로 하는 트럭 버스용 래디알 타이어.The truck tire radial tire according to claim 2, wherein the waveform amplitude direction of the carcass code of the corrugation portion is formed perpendicular to the carcass surface. 제1항 내지 제3항 중 어느 하나의 항에 있어서, 파형부의 파형 진폭은 카카스 와이어 직경의 2~3배인 것을 특징으로 하는 트럭 버스용 래디알 타이어.The radial tire for a truck bus according to any one of claims 1 to 3, wherein the waveform amplitude of the corrugated portion is two to three times the diameter of the carcass wire.
KR1020060116383A 2006-11-23 2006-11-23 Radial tire for truck and bus KR100792997B1 (en)

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KR1020060116383A KR100792997B1 (en) 2006-11-23 2006-11-23 Radial tire for truck and bus
CN200710194836XA CN101186166B (en) 2006-11-23 2007-11-22 Radial tire for truck and bus

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101209839B1 (en) 2010-11-29 2012-12-07 한국타이어월드와이드 주식회사 Carcass cord structure for truck and bus tire
KR101327222B1 (en) 2010-12-21 2013-11-11 한국타이어 주식회사 Vehicle tire improved carcass in the side wall
KR101385409B1 (en) 2012-08-02 2014-04-14 한국타이어 주식회사 Truck and Bus Tire with Improved Bead Durability
US11338623B2 (en) * 2017-06-06 2022-05-24 Bridgestone Corporation Pneumatic radial tire

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05294107A (en) * 1992-04-20 1993-11-09 Bridgestone Corp Radial tire for aircraft
JPH06226870A (en) * 1993-02-02 1994-08-16 Bridgestone Corp Pneumatic tire
JPH06340209A (en) * 1993-06-01 1994-12-13 Bridgestone Corp Pneumatic radial tire for construction vehicle
JP2001121929A (en) 1999-10-29 2001-05-08 Toyo Tire & Rubber Co Ltd Corrugated runflat tire
US20020018205A1 (en) * 1996-07-24 2002-02-14 Aspnes David E. Broadband spectroscopic rotating compensator ellipsometer
JP2003025814A (en) 2001-07-10 2003-01-29 Sumitomo Rubber Ind Ltd Pneumatic tire
JP2004058685A (en) 2002-07-24 2004-02-26 Toyo Tire & Rubber Co Ltd Pneumatic radial tire provided with bead reinforcing layer
JP2005186792A (en) 2003-12-25 2005-07-14 Sumitomo Rubber Ind Ltd Radial tire for heavy load

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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
CN100406278C (en) * 2002-06-28 2008-07-30 株式会社普利司通 Pneumatic tire
FR2882535B1 (en) * 2005-02-28 2007-04-13 Michelin Soc Tech DEVICE AND METHOD FOR MANUFACTURING WAVE PATCHES

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05294107A (en) * 1992-04-20 1993-11-09 Bridgestone Corp Radial tire for aircraft
JPH06226870A (en) * 1993-02-02 1994-08-16 Bridgestone Corp Pneumatic tire
JPH06340209A (en) * 1993-06-01 1994-12-13 Bridgestone Corp Pneumatic radial tire for construction vehicle
US20020018205A1 (en) * 1996-07-24 2002-02-14 Aspnes David E. Broadband spectroscopic rotating compensator ellipsometer
JP2001121929A (en) 1999-10-29 2001-05-08 Toyo Tire & Rubber Co Ltd Corrugated runflat tire
JP2003025814A (en) 2001-07-10 2003-01-29 Sumitomo Rubber Ind Ltd Pneumatic tire
JP2004058685A (en) 2002-07-24 2004-02-26 Toyo Tire & Rubber Co Ltd Pneumatic radial tire provided with bead reinforcing layer
JP2005186792A (en) 2003-12-25 2005-07-14 Sumitomo Rubber Ind Ltd Radial tire for heavy load

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101209839B1 (en) 2010-11-29 2012-12-07 한국타이어월드와이드 주식회사 Carcass cord structure for truck and bus tire
KR101327222B1 (en) 2010-12-21 2013-11-11 한국타이어 주식회사 Vehicle tire improved carcass in the side wall
KR101385409B1 (en) 2012-08-02 2014-04-14 한국타이어 주식회사 Truck and Bus Tire with Improved Bead Durability
US11338623B2 (en) * 2017-06-06 2022-05-24 Bridgestone Corporation Pneumatic radial tire

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CN101186166A (en) 2008-05-28
CN101186166B (en) 2010-06-09

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