KR20110049422A - Heavy duty tire improved tread member - Google Patents

Heavy duty tire improved tread member Download PDF

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Publication number
KR20110049422A
KR20110049422A KR1020090106434A KR20090106434A KR20110049422A KR 20110049422 A KR20110049422 A KR 20110049422A KR 1020090106434 A KR1020090106434 A KR 1020090106434A KR 20090106434 A KR20090106434 A KR 20090106434A KR 20110049422 A KR20110049422 A KR 20110049422A
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KR
South Korea
Prior art keywords
tread
belt
rubber sheet
carcass
tire
Prior art date
Application number
KR1020090106434A
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Korean (ko)
Inventor
이동규
박현철
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.)
Filing date
Publication date
Application filed by 한국타이어 주식회사 filed Critical 한국타이어 주식회사
Priority to KR1020090106434A priority Critical patent/KR20110049422A/en
Priority to CN2009102596850A priority patent/CN102049974B/en
Publication of KR20110049422A publication Critical patent/KR20110049422A/en

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60CVEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C9/00Reinforcements or ply arrangement of pneumatic tyres
    • B60C9/18Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60CVEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C9/00Reinforcements or ply arrangement of pneumatic tyres
    • B60C2009/0071Reinforcements or ply arrangement of pneumatic tyres characterised by special physical properties of the reinforcements
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60CVEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C9/00Reinforcements or ply arrangement of pneumatic tyres
    • B60C9/18Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
    • B60C2009/1878Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers with flat cushions or shear layers between the carcass and the belt

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

Abstract

PURPOSE: A tire for a heavy vehicle with an improved tread member is provided to improve the durability of a belt and to reduce the fatigue of the belt by reducing the curved degree of the belt. CONSTITUTION: A tire for a heavy vehicle with an improved tread member comprises a tread(1), side walls, and bead parts. The side walls are arranged in both sides of the tread. The bead parts are formed in the ends of the side walls. A carcass(2) is a frame of the tread, the side walls, and the bead parts. Multiple belt layers(31,32,33) are formed in the tread. A rubber sheet(4) is installed between the carcass and the first belt layer.

Description

돌기승월능력을 향상시킨 중하중차량용 타이어{Heavy duty tire improved tread member}Heavy duty tire improved tread member}

본 발명은 중하중 차량용 타이어에 관한 것으로 특히 트레드부를 개량하여 돌기 승월(乘越; 타고 넘어가기) 능력을 향상시켜서 된 타이어를 제공하기 위한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tire for a heavy load vehicle, and more particularly, to provide a tire obtained by improving the tread portion to improve the ability to climb and climb.

트럭, 특히 덤프 트럭과 같은 작업용 차량의 경우에는 타이어에 큰 하중이 가해지며 공기압 또한 높아야 하는 등 사용 조건이 가혹할 뿐 아니라 주행도로가 험한 경우가 많다. 즉, 하중이 큰 경우 이를 지탱하기 위해서는 높은 공기압을 필요로하며, 이와 같이 공기압이 높은 경우 벨트부의 장력이 크게 되며, 장력이 크게 걸린 상태에서 돌기물이나 움푹 패인 웅덩이를 지날 경우 타이어에는 큰 충격 하중을 가하게되며 트레드부의 변형량이 커지게 된다. 트레드의 변형은 트레드를 구성하는 벨트의 굴곡으로 나타나며 밸트의 심한 굴곡은 벨트층의 세파레이션(Separation)을 초래하여 결국 타이어의 수명을 단축시키는 결과로 나타나게 된 다.Trucks, especially work vehicles such as dump trucks, are subject to heavy use conditions such as heavy loads on tires and high air pressure. In other words, when the load is large, high air pressure is required to support it, and when the air pressure is high, the tension of the belt part is increased. And the deformation of the tread becomes large. The deformation of the tread results in the bending of the belt constituting the tread, and the severe bending of the belt leads to separation of the belt layer, resulting in a shortened tire life.

그리하여 종래의 타이어에 있어서는 트레드의 패턴을 개량한다던지 벨트부의 강성을 보강한다던지 하는 방법으로 벨트부의 변형에 따른 피로에 의한 세파레이션을 방지하도록 하여 왔다. 그러나, 트레드 패턴 변화에 의한 험로 내구성이나 벨트부 개량에 의한 내구성 향상에는 한계가 있으며, 이러한 요소의 개량만으로는 돌기물의 승월 능력 향상이 충분치 아니한 어려움이 있다. Thus, in conventional tires, separation due to fatigue due to deformation of the belt portion has been prevented by improving the tread pattern or reinforcing the rigidity of the belt portion. However, there is a limit to the improvement of the roughness by the tread pattern change or the durability by the belt part improvement, and there is a difficulty that the improvement of the ability to climb the projections alone is not sufficient by the improvement of these elements alone.

이에 본 발명은, 특히, 벨트의 굴곡 정도를 감소시킴으로써 벨트의 피로를 감소시키고 그리하여 벨트의 내구성을 향상시킬 수 있는 타이어를 제공하여야 한다는 과제를 해결하고자 한다.Accordingly, the present invention, in particular, is to solve the problem of providing a tire that can reduce the fatigue of the belt by reducing the degree of bending of the belt and thus improve the durability of the belt.

위와 같은 과제를 해결하기 위하여 본 발명은, 트레드를 구성하는 벨트층과 카카스층 사이에 러버시트(Rubber sheet)를 설치하여, 러버시트로 인하여 돌기 승월시 벨트층의 꺾임 각도를 완만하게 하는 타이어를 제공한다.In order to solve the above problems, the present invention, by installing a rubber sheet (Rubber sheet) between the belt layer and the carcass layer constituting the tread, the tire to smooth the angle of bending of the belt layer at the time of ascending protrusion due to the rubber sheet To provide.

위와 같이 본 발명은 러버시트로 인하여 돌기 승월시 벨트층의 꺾임 각도가 완만하게 되어 승월시의 벨트 굴곡 곡률을 저하시킴으로써 돌기 승월로 인한 벨트의 스트레스를 감소시키고 나아가 트레드의 손상을 감소시킬 수 있는 효과가 있다.As described above, the present invention has the effect of reducing the stress of the belt due to the protrusion of the belt by lowering the bending angle of the belt layer during the ascension of the belt due to the rubber seat, thereby reducing the stress on the tread. There is.

도 3의 실험결과에서 확인할 수 있듯이, 본 발명의 고무시트를 적용한 결과에서 벨트에 가해지는 스트레스(tension)가 감소되는 효과을 확인 할 수 있다. 실험결과 4개의 벨트를 적용한 타이어에서 특히 2벨트와 3벨트에서의 스트레스 감소의 폭이 현저하였다.As can be seen from the experimental results of Figure 3, in the result of applying the rubber sheet of the present invention it can be confirmed that the effect of reducing the stress (tension) applied to the belt. As a result of the experiment, four belts were applied, and the width of stress reduction was remarkable in 2 belt and 3 belt.

트레드(1)와 트레드(1) 양측의 사이드월 및 양측 사이드월 단부의 비드부로 구성되며, 트레드(1)와 사이드월 및 비드부가 카카스(2)를 골격으로 하고 트레드(1)의 카카스(2) 외측에 다수개의 벨트층(31, 32, 33)을 형성시켜서 된 자동차용 타이어에 있어서, 본 발명은, 카카스(2)와 다수개의 벨트 중 제1 벨트(31) 사이에 고무시트(4)를 설치하여서 된 타이어를 제공한다.The tread 1 and the sidewalls at both sides of the tread 1 and the bead portions at both end portions of the sidewalls, and the tread 1 and the sidewalls and the bead portions are made of the carcass 2 as a skeleton and the carcass of the tread 1. (2) An automobile tire in which a plurality of belt layers 31, 32, 33 are formed on the outside thereof, and the present invention provides a rubber sheet between the carcass 2 and the first belt 31 of the plurality of belts. (4) is provided to provide a tire.

고무시트(4)는 그 폭(W1)을 트레드 폭(W)의 1/2 이하로 형성시키고, 중앙부는 두툼하고 양측 사이드월 쪽을 갈수록 점점 얇은 형상으로 형성시키는 바 고무시트 중앙부의 두께(41)는 2~5mm로 형성시키고, 사이드월쪽으로 점점 얇게 형성시키기 위한 고무시트(4)의 상면 곡률은 트레드 표면 곡률의 80% 이하로 형성시키는 것이 바람직하다. 고무시트(4)는 모듈러스가 크면 클수록 버팀의 효과가 커서 돌기 승월시 벨트의 굴곡 변화를 감소시키게 되는 바, 이러한 고무시트(4)의 물성은 카카스 토핑 고무의 영률 모듈러스(Young's Modulus)의 50~200%인 것이 바람직하다. The rubber sheet 4 forms the width W1 to be 1/2 or less of the tread width W, and forms a thicker portion of the center portion and a thinner shape toward both sidewalls. ) Is formed to 2 to 5mm, the upper surface curvature of the rubber sheet 4 for forming thinner toward the side wall is preferably formed to 80% or less of the tread surface curvature. The greater the modulus of the rubber sheet 4 is, the greater the effect of the support is to reduce the bending change of the belt during the process of ascending and climbing. The properties of the rubber sheet 4 are 50 of the Young's Modulus of the carcass topping rubber. It is preferable that it is -200%.

도 1은 본 발명의 요부 발췌 단면도.1 is a cross-sectional view of the main portion of the present invention.

도 2는 본 발명의 고무시트의 단면도.2 is a cross-sectional view of the rubber sheet of the present invention.

도 3은 본 발명의 실험 결과를 도시한 실험 결과 그래프.3 is an experimental result graph showing the experimental results of the present invention.

<도면의 주요 부호에 대한 설명>DESCRIPTION OF THE RELATED ART [0002]

1. 트레드1. Tread

2. 사이드월2. Sidewall

31, 32, 33. 벨트층31, 32, 33. Belt layer

4. 고무시트4. Rubber Sheet

Claims (3)

트레드와 트레드 양측의 사이드월 및 양측 사이드월 단부의 비드부로 구성되며, 트레드와 사이드월 및 비드부가 카카스를 골격으로 하고 트레드의 카카스 외측에 다수개의 벨트층을 형성시켜서 된 것에 있어서, 본 발명은, 카카스와 다수개의 벨트 중 제1 벨트 사이에 고무시트를 설치하여서 된 돌기승월능력을 향상시킨 중하중차량용 타이어.The tread and the sidewalls on both sides of the tread and the bead portions on both sidewall ends, and the tread and sidewalls and the bead portions form a plurality of belt layers on the outer side of the carcass with the carcass as a skeleton. Silver and heavy-duty vehicle tires, which have improved the ability to climb ascending by providing a rubber sheet between the carcass and the first belt of the plurality of belts. 제 1항에 있어서, 상기 고무시트는 그 폭(W1)을 트레드 폭(W)의 1/2 이하로 형성시키고, 중앙부는 두툼하고 양측 사이드월 쪽을 갈수록 점점 얇은 형상으로 형성시키며, 고무시트 중앙부의 두께는 2~5mm로 형성시키고, 사이드월쪽으로 점점 얇게 형성시키기 위한 고무시트의 상면 곡률은 트레드 표면 곡률의 80% 이하로 형성시키는 것을 특징으로 하는 돌기승월능력을 향상시킨 중하중차량용 타이어.The rubber sheet according to claim 1, wherein the rubber sheet is formed to have a width W1 equal to or less than 1/2 of the tread width W, and the center portion is thick and forms an increasingly thinner shape toward both sidewalls. The thickness of the 2 to 5mm, and the upper surface curvature of the rubber sheet for forming a thinner toward the sidewall is formed to be less than 80% of the surface curvature of the tread surface, the tire for heavy lift vehicle improved capability. 제 1항에 있어서 상기 고무시트의 모듈러스는 카카스 토핑 고무의 영률 모듈러스(Young's Modulus)의 50~200%인 것을 특징으로 하는 돌기승월능력을 향상시킨 중하중차량용 타이어.The heavy duty vehicle tire of claim 1, wherein the modulus of the rubber sheet is 50 to 200% of the Young's Modulus of the carcass topping rubber.
KR1020090106434A 2009-11-05 2009-11-05 Heavy duty tire improved tread member KR20110049422A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020090106434A KR20110049422A (en) 2009-11-05 2009-11-05 Heavy duty tire improved tread member
CN2009102596850A CN102049974B (en) 2009-11-05 2009-12-22 Truck tire capable of improving protrusion trafficability of truck

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020090106434A KR20110049422A (en) 2009-11-05 2009-11-05 Heavy duty tire improved tread member

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KR20110049422A true KR20110049422A (en) 2011-05-12

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101885027B1 (en) 2017-04-04 2018-08-02 한국타이어 주식회사 Ultra Super Single Tire for heavy duty
KR20190054777A (en) 2017-11-14 2019-05-22 한국타이어 주식회사 Tire for heavy duty

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1326714C (en) * 2000-10-10 2007-07-18 米其林技术公司 Tire having carcass portion in shape of truncated cone
JP2004299639A (en) * 2003-04-01 2004-10-28 Yokohama Rubber Co Ltd:The Pneumatic tire

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101885027B1 (en) 2017-04-04 2018-08-02 한국타이어 주식회사 Ultra Super Single Tire for heavy duty
EP3385095A1 (en) 2017-04-04 2018-10-10 Hankook Tire Co., Ltd. Ultra super single tire for heavy duty
KR20190054777A (en) 2017-11-14 2019-05-22 한국타이어 주식회사 Tire for heavy duty

Also Published As

Publication number Publication date
CN102049974B (en) 2013-12-25
CN102049974A (en) 2011-05-11

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