KR100569867B1 - Heavy duty pneumatic radial tire - Google Patents

Heavy duty pneumatic radial tire Download PDF

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Publication number
KR100569867B1
KR100569867B1 KR1020030081721A KR20030081721A KR100569867B1 KR 100569867 B1 KR100569867 B1 KR 100569867B1 KR 1020030081721 A KR1020030081721 A KR 1020030081721A KR 20030081721 A KR20030081721 A KR 20030081721A KR 100569867 B1 KR100569867 B1 KR 100569867B1
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KR
South Korea
Prior art keywords
inner liner
pneumatic radial
tire
radial tire
joint
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KR1020030081721A
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Korean (ko)
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KR20050047918A (en
Inventor
김장현
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금호타이어 주식회사
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Priority to KR1020030081721A priority Critical patent/KR100569867B1/en
Publication of KR20050047918A publication Critical patent/KR20050047918A/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
    • B60C5/00Inflatable pneumatic tyres or inner tubes
    • B60C5/12Inflatable pneumatic tyres or inner tubes without separate inflatable inserts, e.g. tubeless tyres with transverse section open to the rim
    • B60C5/14Inflatable pneumatic tyres or inner tubes without separate inflatable inserts, e.g. tubeless tyres with transverse section open to the rim with impervious liner or coating on the inner wall of the tyre
    • 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
    • B60C5/00Inflatable pneumatic tyres or inner tubes
    • B60C5/12Inflatable pneumatic tyres or inner tubes without separate inflatable inserts, e.g. tubeless tyres with transverse section open to the rim
    • B60C5/14Inflatable pneumatic tyres or inner tubes without separate inflatable inserts, e.g. tubeless tyres with transverse section open to the rim with impervious liner or coating on the inner wall of the tyre
    • B60C2005/145Inflatable pneumatic tyres or inner tubes without separate inflatable inserts, e.g. tubeless tyres with transverse section open to the rim with impervious liner or coating on the inner wall of the tyre made of laminated 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
    • B60C11/00Tyre tread bands; Tread patterns; Anti-skid inserts
    • B60C11/03Tread patterns
    • B60C2011/0337Tread patterns characterised by particular design features of the pattern
    • B60C2011/0339Grooves
    • B60C2011/0341Circumferential grooves

Abstract

본 발명은 중하중용 공기입 레디얼 타이어에 관한 것으로, 더욱 상세하게는 인너라이너를 같은 두께를 유지하면서도 내층과 외층으로 형성함으로써, 타이어의 균일도를 높여 주행시 승차감을 향상하고, 재생성을 향상하며 내구력을 대폭적으로 향상할 수 있는 인너라이너를 가지는 중하중용 공기입 레디얼 타이어에 관한 것이다.The present invention relates to a pneumatic radial tire for a heavy load, and more particularly, by forming the inner liner in the inner layer and the outer layer while maintaining the same thickness, thereby increasing the uniformity of the tire to improve riding comfort, improve reproducibility, and improve durability. It relates to a heavy-duty pneumatic radial tire having an inner liner that can be improved by.

타이어, 인너라이너Tire, Inner Liner

Description

중하중용 공기입 레디얼 타이어{Heavy duty pneumatic radial tire} Heavy duty pneumatic radial tire             

도 1은 종래 인너라이너의 단면도1 is a cross-sectional view of a conventional inner liner

도 2는 본 발명인 인너라이너의 단면도Figure 2 is a cross-sectional view of the present inventors inner liner

도 3은 본 발명을 적용한 타이어의 단면도3 is a cross-sectional view of a tire to which the present invention is applied.

<도면의 주요부분에 대한 부호의 설명><Description of the code | symbol about the principal part of drawing>

10: 트레드 20: 벨트10: tread 20: belt

30: 플라이 40,45: 인너라이너 30: Fly 40, 45: Inner Liner

41,46: 조인트41,46: joint

본 발명은 중하중용 공기입 레디얼 타이어에 관한 것으로, 더욱 상세하게는 인너라이너를 같은 두께를 유지하면서도 내층과 외층으로 형성함으로써, 타이어의 균일도를 높여 주행시 승차감을 향상하고, 재생성을 향상하며 내구력을 대폭적으로 향상할 수 있는 인너라이너를 가지는 중하중용 공기입 레디얼 타이어에 관한 것이다.The present invention relates to a pneumatic radial tire for a heavy load, and more particularly, by forming the inner liner in the inner layer and the outer layer while maintaining the same thickness, thereby increasing the uniformity of the tire to improve riding comfort, improve reproducibility, and improve durability. It relates to a heavy-duty pneumatic radial tire having an inner liner that can be improved by.

종래 타이어는 그린타이어를 성형할 때 인너라이너를 부착한다. Conventional tires have an inner liner attached when molding the green tires.

이 때, 도 1에 나타난 바와 같이 인너라이너(45)를 1회전만 하여 부착하는 것이 일반적이다.In this case, as shown in FIG. 1, the inner liner 45 is generally attached only by one rotation.

그러나, 인너라이너(45)를 1회전하면(예를 들면 게이지가 3.0㎜로 할 때) 성형시 이형제 및 가류시 몰드표면에 분사하는 이형제가 조인트(46)에 침투하여 인너라이너 벌어짐('인너라이너 오픈'이라고도 함.)이 발생하게 된다.However, when the inner liner 45 is rotated once (for example, when the gauge is 3.0 mm), the release agent during molding and the release agent sprayed on the mold surface during vulcanization penetrate into the joint 46 to open the inner liner ('inner liner). Also known as "open."

따라서, 상기와 같은 인너라이너 벌어짐이 발생하지 않도록 하기 위하여 조인트(46)를 약간 오버랩하여 성형을 한다. Therefore, in order to prevent the inner liner flare as described above, the joint 46 is slightly overlapped and molded.

오버랩하여 성형을 하면 2차 성형시 세이핑할 때, 인너라이너 오버랩 조인트는 게이지가 다른 부위보다 덜 늘어나며, 상대적으로 오버랩 조인트 옆에서 많이 늘어나게 된다. Overlap molding allows innerliner overlap joints to have less gauge than other areas and relatively much next to overlap joints when shaping during secondary molding.

상기와 같이 인너라이너 조인트 옆이 많이 늘어나게 되면 타이어 가류 후 코드노출 불량발생이 많아지고, 또한 불량이 발생하지 않더라도 주행시 소위 카카스 세파라는 품질문제를 야기할 수 있다. As described above, when the inner liner joint is increased a lot, the cord exposure after tire vulcanization increases, and even when the defect does not occur, so-called carcass separ may cause quality problems during driving.

또한, 인너라이너 오버랩 조인트로 인해 성형 및 가류시 에어(air)입 불량 발생이 빈번해지는 단점이 있다. In addition, due to the inner liner overlap joint, there is a disadvantage that frequent occurrence of air mouth defects during molding and vulcanization.

또, 인너라이너를 1회전할 경우 조인트부에서 벌지(Bulge)나 덴트(Dent)가 발생하여 외관품질 저하는 물론 타이어의 균일성이 저하되어 주행시 승차감 저하를 초래하게 되는 요인이 되었다. In addition, when the inner liner is rotated once, a bulge or dent occurs in the joint part, resulting in a deterioration in appearance quality and a decrease in uniformity of the tire, thereby causing a decrease in riding comfort.

상기와 같은 문제점을 해결하기 위해 안출된 본 발명의 목적은, 공기입 레이얼 타이어에 있어서 타이어의 균일도를 높여 주행시 승차감을 향상하고, 재생성을 향상하며 내구력을 대폭적으로 향상할 수 있는 인너라이너를 가지는 중하중용 공기입 레디얼 타이어를 제공하는데 있다.
An object of the present invention devised to solve the above problems is to increase the uniformity of the tire in the pneumatic radial tire to improve ride comfort, improve reproducibility and have an inner liner that can significantly improve durability. To provide a heavy-duty pneumatic radial tire.

상기의 목적을 달성하기 위한 본 발명은, 트레드 원주방향으로 2개 이상의 메인 그루브를 가지는 중하중용 공기입 레디얼 타이어에 있어서, 인너라이너 전체 게이지를 두께방향으로 2등분하여 각각 회전하여 내측 인너라이너와 외측 인너라이너가 겹쳐지게 하고, 내측과 외측 인너라이너 양단을 조인트로 연결하는 것을 특징으로 하는 중하중용 공기입 레이얼 타이어이다.The present invention for achieving the above object, in the heavy-load pneumatic radial tire having two or more main grooves in the circumferential direction of the tread, the inner inner liner and the outer side by dividing the entire inner liner gauge in two in the thickness direction, respectively It is a heavy-duty pneumatic radial tire characterized by overlapping the inner liner and connecting both inner and outer inner liners with a joint.

상기에서 내측 인너라이너의 조인트와 외측 인너라이너의 조인트의 위치는 일치 또는 180°를 이루도록 하는 것을 특징으로 한다.In the above, the position of the joint of the inner inner liner and the joint of the outer inner liner is coincident or 180 degrees.

이하, 본 발명을 실시예 및 도면을 통하여 상세히 설명한다.Hereinafter, the present invention will be described in detail through examples and drawings.

도 2에서 인너라이너(40) 전체 게이지를 X라 할 때, 이 인너라이너 반제품 준비시 게이지를 X/2로 준비하여 성형시 X/2의 인너라이너 2개를 각각 회전시켜 접촉하여 성형을 한다. In FIG. 2, when the entire inner liner 40 is referred to as X, the inner liner 40 is prepared by preparing the gauge as X / 2 when preparing the semi-finished inner liner.

이 때, 이 인너라이너를 회전할 때 시작했던 점과 끝 지점을 일치하여 조인트(41)로 부착한다. At this time, the joints are attached to coincide with the starting point and the ending point when the inner liner is rotated.

조인트(41)의 부착방법은 도 2와 같이, 내측 인너라이너 시작점과 외측 인너라이너 끝 조인트를 서로 일치시키다.In the attaching method of the joint 41, as shown in Fig. 2, the inner inner liner start point and the outer inner liner end joint coincide with each other.

또 다른 조인트의 부착방법은, 내측과 외측의 인너라이너의 조인트를 서로 반대방향 위치(180도)에 조인트하는 방법이 있다. Another method for attaching a joint is to join the inner and outer inner liner joints in opposite directions (180 degrees).

즉, 내측 인너라이너 X/2를 90도 방향에서 부착을 시작하여 90도 방향에서 조인트를 하고 나서 인너라이너를 절단하고, 바깥쪽 인너라이너는 X/2를 270도 방향에서 부착을 시작하여 270도 방향에서 조인트를 한다.That is, the inner inner liner X / 2 starts to be attached in the 90 degree direction, the joint is made in the 90 degree direction, and then the inner liner is cut, and the outer inner liner starts to attach the X / 2 in the 270 degree direction to 270 degrees. Joint in the direction.

상기와 같이 인너라이너(40)를 제작함으로써, 타이어 제조시 주행시 조인트 벌어짐 발생억제로 불량 발생율이 감소되며, 주행시 타이어 균일성 확보로 승차감 향상을 초래할 수 있다. By manufacturing the inner liner 40 as described above, the occurrence rate of the defect is reduced by suppressing the occurrence of the joint gap during driving during tire manufacture, and the riding comfort can be improved by securing the tire uniformity during driving.

도 3은 본 발명을 적용한 타이어의 단면도로써, 트레드(10), 벨트(20), 플라이(30)의 하부에 인너라이너(40)이 위치한다.3 is a cross-sectional view of the tire to which the present invention is applied, and the inner liner 40 is positioned below the tread 10, the belt 20, and the ply 30.

본 고안에 따른 중하중용 공기입 레디얼 타이어는 상기에서 기술한 구성을 통하여 타이어 제조시 또는 주행시 인너라이너 조인트부에서 벌어짐 발생을 효과적으로 방지하여 내구성 향상 뿐만 아니라 타이어 균일도 향상으로 주행시 승차감 향상이 가능하다.Heavy-duty pneumatic radial tire according to the present invention can effectively prevent the occurrence of gap in the inner liner joint part during tire manufacturing or driving through the configuration described above, it is possible to improve the riding comfort when driving as well as durability and tire uniformity.

Claims (3)

트레드 원주방향으로 2개 이상의 메인 그루브를 가지는 중하중용 공기입 레디얼 타이어에 있어서, In the heavy-duty pneumatic radial tire having two or more main grooves in the circumferential direction of the tread, 인너라이너 전체 게이지를 두께방향으로 2등분하여 각각 회전하여 내측 인너라이너와 외측 인너라이너가 겹쳐지게 하고, 내측과 외측 인너라이너 양단을 조인트로 연결하고,The inner inner liner is divided into two parts in the thickness direction and rotated so that the inner inner liner and the outer inner liner overlap each other. 상기 내측 인너라이너의 조인트와 상기 외측 인너라이너의 조인트의 위치가 180°를 이루도록 하는 것을 특징으로 하는 중하중용 공기입 레이얼 타이어.The pneumatic radial tire for heavy loads, characterized in that the position of the joint of the inner inner liner and the joint of the outer inner liner is 180 degrees. 삭제delete 삭제delete
KR1020030081721A 2003-11-18 2003-11-18 Heavy duty pneumatic radial tire KR100569867B1 (en)

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