KR20090067562A - Heavy duty vehicle tire improved bead member - Google Patents

Heavy duty vehicle tire improved bead member

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Publication number
KR20090067562A
KR20090067562A KR1020070135258A KR20070135258A KR20090067562A KR 20090067562 A KR20090067562 A KR 20090067562A KR 1020070135258 A KR1020070135258 A KR 1020070135258A KR 20070135258 A KR20070135258 A KR 20070135258A KR 20090067562 A KR20090067562 A KR 20090067562A
Authority
KR
South Korea
Prior art keywords
bead
carcass
chafer
end portion
outer end
Prior art date
Application number
KR1020070135258A
Other languages
Korean (ko)
Inventor
장윤태
Original Assignee
한국타이어 주식회사
Priority date (The priority date 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 date listed.)
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Publication date
Application filed by 한국타이어 주식회사 filed Critical 한국타이어 주식회사
Priority to KR1020070135258A priority Critical patent/KR20090067562A/en
Publication of KR20090067562A publication Critical patent/KR20090067562A/en

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Classifications

    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
    • C08L77/02—Polyamides derived from omega-amino carboxylic acids or from lactams thereof
    • 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
    • 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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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Tires In General (AREA)

Abstract

A heavy duty vehicle tire with an improved bead member is provided to prevent a carcass end part from being released in spite of the damage to a chafer due to the overload applied to the tire, thereby improving the durability of the tire. A heavy duty vehicle tire with an improved bead member includes a steel chafer(4), of which an outer end(41) is positioned higher than an outer end of a carcass(3) and an inner end(42) is positioned above a bead toe by 50~90mm with a buffering element(7) with respect to the carcass.

Description

비드부를 개선한 중하중 차량용 타이어{Heavy duty vehicle tire improved bead member}Heavy duty vehicle tire improved bead member

본 발명은 중하중 차량용 타이어에 관한 것으로 특히 비드부를 개량하여서 된 중하중 차량용 타이어에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heavy duty vehicle tire, and more particularly, to a heavy duty vehicle tire by improving a bead portion.

사용조건이 가혹한 중하중 차량, 특히, 중 트럭용 공기입 타이어는 주행시 반복적인 하중작용에 의해 카카스가 주기적으로 인장과 압축작용을 받게 되고 이때 비드 번들은 회전하려는 응력을 받게 되며 이에 따라 카카스 말단부는 전단 변형 에너지가 발생하게 된다. 이러한 현상이 지속되고 타이어의 성능보다 사용조건이 가혹한 경우 타이어에 파열(Separation)이 발생하기 쉽다.Heavy-duty vehicles, especially heavy-duty trucks, under severe conditions of use, are periodically tensioned and compressed by the carcass under repeated loads while driving, and the bead bundles are stressed to rotate. The distal end will generate shear strain energy. If this phenomenon persists and the conditions of use are severer than the performance of the tires, tearing is likely to occur in the tires.

특히, 종래의 타이어는 카카스 외측 말단부 보다 스틸채퍼 외측 단말부의 위치가 낮게 배치되는 하이 턴 업(High Turn Up)구조로 되어있는 바, 이러한 구조는 과하중에 의한 파괴시 카카스 턴 업(Carcass Turn Up) 풀림 현상으로 발전하여 비드부 파열(Burst)사고가 발생하기 쉽다.In particular, the conventional tire has a high turn up structure in which the position of the steel chafer outer end portion is lower than that of the outer end of the carcass, and such a structure is a carcass turn up upon breakage caused by overload. Up) It develops into loosening and tends to cause bead bursts.

또한, 이러한 종래의 타이어는 비드 번들을 중심으로 카카스가 배치되어 있 고 비드 번들의 상부에 2중의 고경도 비드필러가 채워지는데 타이어 제조과정 중 육각의 비드 번들이 흐트러지기 쉽고 비드 번들과 고경도 비드필러 접촉면에 공기가 들어가 기포를 형성시켜 내구성을 저해할 수 있다.In addition, such a conventional tire has a carcass arranged around a bead bundle and a double hard bead filler is filled in the upper part of the bead bundle. Air may enter the bead filler contact surface to form bubbles, thereby impairing durability.

그리하여, 본 발명은 가혹한 사용 조건하에서도 비드부에 파열 현상이 발생하지 않을 수 있는 타이어를 제공하여야 하며, 타이어에 과하중이 걸리어 채퍼가 손상되더라도 턴업된 카카스 말단부 마저 풀려지는 현상이 없는 타이어를 제공하여야 하며 비드번들과 비드필러 사이에 기포가 발생되지 아니하는 타이어를 제공하여야 한다는 과제를 해결하고자 한다. Therefore, the present invention should provide a tire which can not be ruptured under the bead even under severe use conditions, and the tire does not loosen even the turned-up carcass end even if the tire is overloaded and the chaper is damaged. To solve the problem of providing a tire without bubbles between the bead bundle and the bead filler.

위와 같은 과제를 해결하기 위하여, 본 발명은, 스틸채퍼의 외측 말단부를 카카스의 외측 말단부보다 1~1.5cm 높게 위치시키고 스틸채퍼의 내측말단부를 비드필러의 1/2 높이에 위치시키되 카카스와의 사이에 완충재를 설치하며, 스틸채퍼 및 카카스의 외측 말단부에 커버를 설치하며, 스틸채퍼의 외측에 두개의 나일론채퍼를 설치하되, 내측 나일론채퍼는 그 내측 말단부가 비드번들을 충분히 감싸는 위치인 비드번들 높이의 0.5~1.5cm 상위부에 위치되게 하고 외측 말단부는 스틸채퍼의 외측 말단부 1~1.5cm 상위부에 위치되게 하며, 외측 나일론 채퍼는 그 하측 말단부가 비드힐에 위치되게 하며 그 상측 말단부가 내측 나일론 채퍼의 외측 말단부 1~1.5cm 상위부에 위치되게 하고, 비드번들을 코드지로 감싸고 다시 코드지로 감산 비드번들 상부를 고무시트로 덮어서 된 타이어를 제공한다. In order to solve the above problems, the present invention, the outer end of the steel chafer is positioned 1 ~ 1.5cm higher than the outer end of the carcass and the inner end of the steel chafer is placed at the height of 1/2 of the bead filler, but with the carcass A cushioning material is installed in between, a cover is installed at the outer end of the steel chafer and a carcass, and two nylon chafers are installed at the outside of the steel chafer, and the inner nylon chaper is a bead in which the inner end of the bead bundle sufficiently covers the bead bundle. The outer end is positioned at the top of the bundle's height 0.5-1.5 cm, the outer end is positioned at the outer end of the steel chafer 1-1.5 cm, and the outer nylon chafer is positioned at the lower end of the bead heel and its upper end is Place the top of the outer end of the inner nylon chafer 1 ~ 1.5cm, wrap the bead bundle with cord paper, and then subtract the top of the bead bundle with rubber sheet. Come to provide a tire.

위와 같은 구성을 가진 본 발명의 타이어는, 가혹한 사용 조건하에서도 비드부에 파열 현상이 발생하지 않으며, 타이어에 과하중이 걸리어 채퍼가 손상되더라도 턴업된 카카스 말단부 마저 풀려지는 현상이 발생하지 아니하며, 비드번들과 비드필러 사이에 기포가 발생되지 아니하여, 내구성이 크게 향상되는 효과가 있다.The tire of the present invention having the above configuration, even under severe use conditions, the rupture phenomenon does not occur in the bead portion, and even if the tire is overloaded, even if the chaper is damaged, the turned-up carcass end does not occur. , Bubble is not generated between the bead bundle and the bead filler, there is an effect that the durability is greatly improved.

이러한 본 발명의 효과를 측정하기 위한 실험과 그 결과는 다음과 같다.Experiments for measuring the effects of the present invention and the results are as follows.

실내 내구성 평가 결과Indoor durability evaluation result

1)시험규격: 출원인 회사 제품인 제품번호 1200R20와 본 발명의 타이어1) Test specification: Applicant company product no.1200R20 and tire of the present invention

2)시험조건: ① 하중: 220%2) Test condition: ① Load: 220%

②공기압:145%                   ② Air pressure: 145%

③속도:60km/hr                   ③ Speed: 60km / hr

3)내구성 평가 결과3) durability evaluation result

①종래품 내구성 지수: 100            ① Conventional durability index: 100

②신기술 내구성 지수:125(25% 개선)            ②New technology durability index: 125 (25% improvement)

트레드와 사이드월 및 비드부로 구성 되며, 비드부는 비드번들(1)과; 비드번들(1) 상측에 설치되는 비드필러(2), 비드번들(1)과 비드필러(2)를 감싸는 카카스(3), 카카스(3)의 외측을 감싸는 스틸채퍼(4), 스틸채퍼(4)의 외측을 감싸는 두개의 나일론 채퍼(5, 6)로 구성되는 중하중 차량용 타이어에 있어서, 본 발명은,A tread, a sidewall and a bead part, the bead part including a bead bundle 1; Bead filler (2) installed above the bead bundle (1), carcass (3) surrounding the bead bundle (1) and bead filler (2), steel chaper (4) surrounding the outside of the carcass (3), steel In the heavy-duty vehicle tire composed of two nylon chafers 5 and 6 surrounding the outside of the chaper 4, the present invention provides a

스틸채퍼(4)의 외측 말단부(41)를 카카스(3)의 외측 말단부(31)보다 1~1.5cm 높게 위치시키고, 스틸채퍼(4)의 내측말단부(42)를 비드토우(bead toe)(가)로부터50~90mm 상위에 위치시키되 카카스(3)와의 사이에 완충재(7)를 설치하며, 스틸채퍼(4) 및/또는 카카스(3)의 외측 말단부에 커버(8)(첨부된 도면에는 스틸채퍼의 말단부에만 커버를 설를 설치한 실시예가 도시되어 있다)를 설치하며, 스틸채퍼(4)의 외측에 설치된 두개의 나일론채퍼(5, 6) 중, 내측 나일론채퍼(5)는 그 내측 말단부(52)가 비드번들(1)을 충분히 감싸는 위치인 비드번들(1) 높이의 0.5~1.5cm 상위부에 위치되게 하고 외측 말단부(51)는 스틸채퍼(4)의 외측 말단부(41) 1~1.5cm 상위부에 위치되게 하며, 외측 나일론 채퍼(6)는 그 하측 말단부(52)가 비드힐에 위치되게 하며 그 상측 말단부(51)가 내측 나일론 채퍼(5)의 외측 말단부(51) 1~1.5cm 상위부에 위치되게 하고, 비드번들(1)을 코드지(9)로 감싸고, 다시 코드지(9)로 감싼 비드번들(1) 상부를 고무시트(91)로 덮어 구성시킨다. The outer end portion 41 of the steel chafer 4 is positioned 1 to 1.5 cm higher than the outer end portion 31 of the carcass 3, and the inner end portion 42 of the steel chafer 4 is beaded toe. (A) placed 50 ~ 90mm above, and cushioning material 7 is installed between carcass 3 and cover 8 (attached to the outer end of steel chafer 4 and / or carcass 3) In the drawing, an embodiment in which a cover is installed only at the end of the steel chafer is shown). Among the two nylon chafers 5 and 6 installed outside the steel chaper 4, the inner nylon chaper 5 is The inner distal end portion 52 is positioned at an upper portion of the bead bundle 1, which is 0.5 to 1.5 cm above the height of the bead bundle 1, and the outer end portion 51 is the outer distal end portion 41 of the steel chafer 4. ) The outer nylon chafer 6 has its lower distal end 52 at the bead heel and its upper distal end 51 at the inner nylon chafer 5 Place the outer end portion 51 1 ~ 1.5cm upper portion, the bead bundle (1) wrapped with cord paper (9), the upper back of the bead bundle (1) wrapped with cord paper (9) rubber sheet (91) Cover it with

도1은 본 발명의 요부 발췌단면도로서 해칭을 생략한 상태도1 is a cross-sectional view showing the main portion of the present invention, hatching omitted.

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

1. 비드번들Bead Bundle

2. 비드필러2. Bead Filler

3. 카카스3. Carcass

4. 스틸채퍼4. Steel Chafer

5, 6. 나일론 채퍼5, 6. Nylon Chaper

7. 완충재7. Buffer

8. 커버8. Cover

9. 코드지9. Code

91. 고무시트91. Rubber Sheet

Claims (5)

트레드와 사이드월 및 비드부로 구성 되며, 비드부는 비드번들(1)과; 비드번들(1) 상측에 설치되는 비드필러(2), 비드번들(1)과 비드필러(2)를 감싸는 카카스(3), 카카스(3)의 외측을 감싸는 스틸채퍼(4), 스틸채퍼(4)의 외측을 감싸는 두개의 나일론 채퍼(5, 6)로 구성되는 중하중 차량용 타이어에 있어서, 스틸채퍼(4)의 외측 말단부(41)가 카카스(3)의 외측 말단부(31)보다 높게 위치된 것을 특징으로 하는 비드부를 개선한 중하중 차량용 타이어. A tread, a sidewall and a bead part, the bead part including a bead bundle 1; Bead filler (2) installed above the bead bundle (1), carcass (3) surrounding the bead bundle (1) and bead filler (2), steel chaper (4) surrounding the outside of the carcass (3), steel In a heavy-duty vehicle tire composed of two nylon chafers 5 and 6 surrounding the outside of the chafer 4, the outer end 41 of the steel chafer 4 is the outer end 31 of the carcass 3. The heavy-duty vehicle tire which improved the bead part characterized by being located higher. 제1항에 있어서, 스틸채퍼(4)의 내측말단부(42)를 비드토우(가)로부터 50~90mm 상위에 위치시키되 카카스(3)와의 사이에 완충재(7)를 설치하여서 된 것을 특징으로 하는 비드부를 개선한 중하중 차량용 타이어. The method according to claim 1, wherein the inner end portion 42 of the steel chafer 4 is positioned 50 to 90 mm above the bead tow, and a cushioning material 7 is provided between the carcass 3. The heavy duty vehicle tire which improved the bead part to say. 제1항 또는 제2항에 있어서, 스틸채퍼(4) 및/또는 카카스(3)의 외측 말단부에 커버(8)를 설치하여서 된 것을 특징으로 하는 비드부를 개선한 중하중 차량용 타이어.The heavy-duty vehicle tire according to claim 1 or 2, wherein a cover (8) is provided at the outer end of the steel chafer (4) and / or the carcass (3). 제3항에 있어서, 스틸채퍼(4)의 외측에 설치된 두개의 나일론채퍼(5, 6) 중, 내측 나일론채퍼(5)는 그 내측 말단부(52)가 비드번들(1)을 충분히 감싸는 위치인 비드번들(1) 높이의 0.5~1.5cm 상위부에 위치되게 하고 외측 말단부(51)는 스틸채퍼(4)의 외측 말단부(41) 1~1.5cm 상위부에 위치되게 하며, 외측 나일론 채퍼(6)는 그 하측 말단부(52)가 비드힐에 위치되게 하며 그 상측 말단부(51)가 내측 나일론 채퍼(5)의 외측 말단부(51) 1~1.5cm 상위부에 위치되게 하여서 된 것을 특징으로 하는 비드부를 개선한 중하중 차량용 타이어. 4. The inner nylon hopper 5 of the two nylon hoppers 5 and 6 provided on the outer side of the steel hopper 4 is a position at which the inner end portion 52 sufficiently surrounds the bead bundle 1. The outer end portion 51 is positioned above the outer end portion 41 of the steel chafer 4 and the upper end portion of the bead bundle 1 height of 0.5 to 1.5 cm, and the outer nylon chafer 6 ) Is a bead characterized in that the lower end portion 52 is located in the bead heel and the upper end portion 51 is located in the upper end of the outer end portion 51 1 ~ 1.5cm of the inner nylon chafer (5) Heavy-duty vehicle tires with improved wealth. 제4항에 있어서, 비드번들(1)을 코드지(9)로 감싸고, 다시 코드지(9)로 감싼 비드번들(1) 상부를 고무시트(91)로 덮어서 구성된 것을 특징으로 하는 비드부를 개선한 중하중 차량용 타이어. The bead bundle of claim 4, wherein the bead bundle 1 is wrapped with a cord paper 9, and the upper portion of the bead bundle 1 wrapped with the cord paper 9 is covered with a rubber sheet 91. One heavy duty car tire.
KR1020070135258A 2007-12-21 2007-12-21 Heavy duty vehicle tire improved bead member KR20090067562A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101301100B1 (en) * 2010-12-15 2013-08-27 한국타이어 주식회사 Pneumatic vehicle tire
KR101323284B1 (en) * 2011-12-27 2013-10-30 금호타이어 주식회사 Heavy Duty Pneumatic Tire improved bead durability
KR101723745B1 (en) 2015-10-20 2017-04-05 금호타이어 주식회사 Heavy Duty Pneumatic Tire with Reinforced Bead part
KR20190048290A (en) * 2017-10-31 2019-05-09 금호타이어 주식회사 Heavy duty tire with improved endurance

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101301100B1 (en) * 2010-12-15 2013-08-27 한국타이어 주식회사 Pneumatic vehicle tire
KR101323284B1 (en) * 2011-12-27 2013-10-30 금호타이어 주식회사 Heavy Duty Pneumatic Tire improved bead durability
KR101723745B1 (en) 2015-10-20 2017-04-05 금호타이어 주식회사 Heavy Duty Pneumatic Tire with Reinforced Bead part
KR20190048290A (en) * 2017-10-31 2019-05-09 금호타이어 주식회사 Heavy duty tire with improved endurance

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