KR101232135B1 - Belt structure of heavy duty tire - Google Patents

Belt structure of heavy duty tire Download PDF

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Publication number
KR101232135B1
KR101232135B1 KR1020110088018A KR20110088018A KR101232135B1 KR 101232135 B1 KR101232135 B1 KR 101232135B1 KR 1020110088018 A KR1020110088018 A KR 1020110088018A KR 20110088018 A KR20110088018 A KR 20110088018A KR 101232135 B1 KR101232135 B1 KR 101232135B1
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KR
South Korea
Prior art keywords
belt
spiral coil
tire
heavy
duty tire
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KR1020110088018A
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Korean (ko)
Inventor
김진수
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한국타이어 주식회사
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Priority to KR1020110088018A priority Critical patent/KR101232135B1/en
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Publication of KR101232135B1 publication Critical patent/KR101232135B1/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
    • B60C9/18—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
    • 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
    • B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
    • B60C23/18—Tyre cooling arrangements, e.g. heat shields
    • B60C23/19—Tyre cooling arrangements, e.g. heat shields for dissipating heat
    • 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
    • B60C9/0057—Reinforcements comprising preshaped elements, e.g. undulated or zig-zag filaments
    • 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
    • B60C9/18—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
    • B60C2009/1871—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers with flat cushions or shear layers between belt layers

Abstract

PURPOSE: A belt structure of a heavy-duty tire is provided to reduce heat generation of a heavy-duty tire and increase belt lift ratio, thereby enhancing durability of the tire and working favorably against viscous impacts. CONSTITUTION: A belt structure of a heavy-duty tire comprise a belt layer, a spire coil group(9), a corrugated portion(10). The belt layer consists of a first belt which is embedded within a tread, a rubber layer contacting roads, and is adjacent to a carcass; a second belt, a third belt, and a forth belt which are sequentially laminated on the first belt in the numbered order. The spiral coil group is arranged between the second and the third belt. The corrugated portion is integrated with a spiral coil(8). The spiral coil having the corrugated portion is arranged skipping an adjacent spiral coil(8a) and the corrugated portions are consecutively arranged in a V shape or a reverse V shape along the driving direction of a tire.

Description

중하중용 타이어의 벨트구조{Belt structure of heavy duty tire}Belt structure of heavy duty tires

본 발명은 중하중용 타이어의 벨트구조에 관한 것으로, 특히 내구성 향상과 벨트 리프트(Belt lift)율을 상대적으로 높여 점성적 충격에 유리하게 작용하는 중하중용 타이어의 벨트구조에 관한 것이다.The present invention relates to a belt structure of a heavy load tire, and more particularly, to a belt structure of a heavy load tire that advantageously improves durability and a belt lift rate to favor a viscous impact.

통상적으로 중하중용 타이어는 플라이 수가 많은 타이어로서, 주로 대형 트럭이나 버스에 장착되는 타이어인데, 이러한 중하중용 타이어의 벨트층 구조를 살펴보면, 도 1에 도시된 바와 같이 노면에 접지하는 고무층인 트레드(1) 내부에서 카카스(2)와 접하는 제 1 벨트(3)와 이 제 1 벨트(3) 위에 적층된 제 2 벨트(4)와 제 3 벨트(5) 및 제 4 벨트(6)로 이루어지되, 상기 제 2 벨트(4)와 제 3 벨트(5) 사이에는 스파이럴 코일(8, Spiral Coil)이 적용되어 내구성 향상에 도움을 주도록 되어 있다.In general, a heavy-load tire is a tire having a large number of plies, and is mainly a tire mounted on a large truck or a bus. Referring to the belt layer structure of such a heavy-load tire, a tread (1) which is a rubber layer grounded on a road surface as shown in FIG. The first belt 3, which is in contact with the carcass 2, and the second belt 4, the third belt 5, and the fourth belt 6 stacked on the first belt 3. In addition, a spiral coil 8 is applied between the second belt 4 and the third belt 5 to help improve durability.

종래에는 상기 제 2 벨트(4)와 제 3 벨트(5) 사이에 배치되는 스파이럴 코일(8)은 타이어의 원주방향으로 감아 0°의 각도를 가지면서 인치당 코드의 수인 EP1가 동일하게 설정되어 있다.Conventionally, the spiral coil 8 disposed between the second belt 4 and the third belt 5 is wound in the circumferential direction of the tire and has an angle of 0 °, so that EP1, the number of cords per inch, is set to be the same. .

그러나 타이어 성형작업 시 상기 스파이럴 코일(8)의 리프트율(Lift ratio; 벨트층의 성장하는 정도)이 낮아 좌굴(Buckling)에 불리하며 높은 인장을 가짐으로써 전체적인 실내 내구에는 도움을 주나, 상기 스파이럴 코일(8) 일부에 직접적인 충격이 가해지면 상당히 불리하게 작용하는 단점이 있었다.However, in the tire forming operation, the lift ratio of the spiral coil 8 is low, which is disadvantageous to buckling and has a high tension, thereby helping to improve the overall interior durability, but the spiral coil (8) There was a disadvantage in that direct impacts on some parts were quite disadvantageous.

또한, 종래 중하중용 타이어의 벨트층(7) 사이에 배치되는 스파이럴 코일(8)은 직접적인 충격뿐만 아니라 열에도 취약하여 내구성 저하를 초래할 요인을 제공하게 된다.In addition, the spiral coil 8 disposed between the belt layer 7 of the conventional heavy-load tire is vulnerable to heat as well as direct impact to provide a factor that causes durability deterioration.

이에 본 발명은 상기와 같은 종래 문제점을 해결하기 위해 발명된 것으로, 타이어의 내구성 향상시키면서 점성적인 충격에 유리하게 작용하는 중하중용 타이어의 벨트구조를 제공함에 그 목적이 있다.Therefore, the present invention has been invented to solve the conventional problems as described above, and an object of the present invention is to provide a belt structure of a heavy-load tire that advantageously acts on viscous impact while improving the durability of the tire.

상기와 같은 목적을 달성하기 위한 본 발명은 노면과 접촉하는 고무층인 트레드 내부에 내장되면서 카카스에 이웃하여 배치되는 제 1 벨트와 이 제 1 벨트 위에 연속 적층되는 제 2, 3, 4 벨트로 이루어지고, 상기 제 2 벨트와 제 3 벨트 사이에 스파이럴 코일군이 배치되어 이루어진 중하중용 타이어의 벨트 구조에 있어서, 상기 스파이럴 코일군의 스파이럴 코일에는 주름부가 일체로 형성되어 있으며, 상기 주름부를 가진 스파이럴 코일은 이웃한 스파이럴 코일을 건너뛰어 배치되면서 주름부가 타이어의 주행방향을 따라 V자와 역V자로 연속적으로 배치되는 구조를 가지고 있다.The present invention for achieving the above object consists of a first belt which is embedded in the tread, which is a rubber layer in contact with the road surface and disposed adjacent to the carcass, and second, third, and fourth belts sequentially stacked on the first belt. In the belt structure of a heavy-duty tire having a spiral coil group disposed between the second belt and the third belt, the spiral coil of the spiral coil group has wrinkles integrally formed therein, and the spiral coil having the wrinkles. Has a structure in which the corrugated portion is continuously arranged with the V and the inverted V along the driving direction of the tire while being disposed to skip a neighboring spiral coil.

이러한 본 발명에 따른 중하중용 타이어의 벨트구조는 중하중용 타이어의 열발생을 저감시켜 내구성 향상에 도움을 주고, 벨트 리프트율을 보다 상대적으로 높여 점성적 충격에 유리하게 작용할 수 있도록 되어 있다.The belt structure of the heavy-loaded tire according to the present invention is to reduce the heat generation of the heavy-loaded tire to help improve the durability, and to increase the belt lift rate more relative to favor the viscous impact.

도 1은 본 발명의 벨트구조가 적용되는 중하중용 타이어의 부분 절개 사시도,
도 2는 본 발명의 요부인 스파이럴 코일이 적용된 제 2 벨트의 평면도,
도 3 (A)와 (B)는 본 발명에 따른 스파이럴 코일의 작용상태 확대 부분 평면도.1 is a partial cutaway perspective view of a heavy duty tire to which the belt structure of the present invention is applied;
2 is a plan view of a second belt to which a spiral coil, which is an essential part of the present invention, is applied;
Figure 3 (A) and (B) is an enlarged partial plan view of the working state of the spiral coil according to the present invention.

이하, 본 발명의 바람직한 실시예를 첨부도면을 참고하여 상세히 설명한다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

본 발명은 도 1에 도시된 중하중용 타이어에서 트레드(1) 내부에 배치되는 벨트층(7) 구조를 개량 진보시킨 타이어이다.The present invention is a tire that has improved the structure of the belt layer 7 disposed inside the tread 1 in the heavy-load tire shown in FIG.

즉, 본 발명은 노면과 접촉하는 고무층인 트레드(1) 내부에 내장되면서 카카스(2)에 이웃하여 배치되는 제 1 벨트(3)와 이 제 1 벨트(3) 위에 차례로 적층되는 제 2 벨트(4), 제 3 벨트(5) 및, 제 4 벨트(6)로 이루어진 벨트층(7)을 가지고, 상기 제 2 벨트(4)와 제 3 벨트(5) 사이에 스파이럴 코일군(9)이 배치되어 이루어진 중하중용 타이어의 벨트구조에 있어서, 상기 스파이럴 코일군(9)의 스파이럴 코일(8)에는 주름부(10)가 일체로 형성 연결되어 있으며, 이 주름부(10)를 가진 스파이럴 코일(8)은 이웃한 스파이럴 코일(8a)을 건너뛰어 배치되면서 주름부(10)들이 타이어의 주행방향을 따라 V자와 역V자 형태로 연속적으로 배치되어 있다.That is, the present invention is embedded in the tread (1), which is a rubber layer in contact with the road surface, and the first belt (3) disposed adjacent to the carcass (2) and the second belt that is sequentially stacked on the first belt (3) (4) and having a belt layer (7) consisting of a third belt (5) and a fourth belt (6), the spiral coil group (9) between the second belt (4) and the third belt (5). In the belt structure of the heavy-duty tire which is arranged, the spiral coil 8 of the spiral coil group 9 is integrally formed and connected to the spiral coil 8, and has a spiral coil having the spiral coil 10. (8) is arranged while skipping the adjacent spiral coil (8a) are arranged in the form of the V and inverted V in the form of the corrugated portion 10 along the running direction of the tire.

이와 같은 구조를 갖는 벨트구조의 스파이럴 코일군(9)의 구조는 이 스파이럴 코일군(9)의 한 특정부분에 휨을 주게 되면 내압에 의해 주름부(10)를 가진 스파이럴 코일(8)이 도 3 (A)의 상태에서 도 3 (B)의 상태로 펴지도록 되어 있다.The structure of the spiral coil group 9 having a belt structure having such a structure is that the spiral coil 8 having the corrugated portion 10 due to internal pressure is bent when a specific portion of the spiral coil group 9 is bent. It expands to the state of FIG. 3 (B) from the state of (A).

이렇게 내압에 의해 유동적으로 신율이 발생함에 따라 각 스파이럴 코일(8)에 걸리는 텐션에 유동적으로 반응하게 되어 점성적인 충격에 효과적으로 대응할 뿐만 아니라, 열 분산에도 효과적으로 작용하여 크랙 발생을 억제할 수 있는 기능을 갖추게 된다.As the elongation occurs flexibly by internal pressure, it reacts flexibly to the tension applied to each spiral coil 8 to effectively cope with viscous shock, and also to effectively dissipate cracks by effectively acting on heat dissipation. You will have

따라서 본 발명에 적용된 주름부(10)를 가진 스파이럴 코일(8)은 결과적으로 벨트층(7)의 여유를 부여하여 열의 발생을 억제하고 점성적인 충격에도 유리하도록 작용하게 되어 내구성과 점성적 충격에 유리한 중하중용 타이어를 제작할 수 있도록 되어 있다.Therefore, the spiral coil 8 having the pleats 10 applied to the present invention consequently provides a margin of the belt layer 7, thereby suppressing heat generation and acting in favor of viscous impact, thereby providing durability and viscous impact. It is possible to manufacture advantageous heavy duty tires.

1 : 트레드, 2 : 카카스,
3 : 제 1 벨트, 4 : 제 2 벨트,
5 : 제 3 벨트, 6 : 제 4 벨트,
7 : 벨트층, 8,8a : 스파이럴 코일(Spiral coil),
9 : 스파이럴 코일군, 10 : 주름부.1: tread, 2: carcass,
3: first belt, 4: second belt,
5: third belt, 6: fourth belt,
7: belt layer, 8,8a: spiral coil,
9: spiral coil group, 10: wrinkles.

Claims (1)

노면과 접촉하는 고무층인 트레드(1) 내부에 내장되면서 카카스(2)에 이웃하여 배치되는 제 1 벨트(3)와 이 제 1 벨트(3) 위에 차례로 적층되는 제 2 벨트(4), 제 3 벨트(5) 및, 제 4 벨트(6)로 이루어진 벨트층(7)을 가지고, 상기 제 2 벨트(4)와 제 3 벨트(5) 사이에 스파이럴 코일군(9)이 배치되어 이루어진 중하중용 타이어의 벨트구조에 있어서,
상기 스파이럴 코일군(9)의 스파이럴 코일(8)에는 주름부(10)가 일체로 형성 연결되어 있으며, 이 주름부(10)를 가진 스파이럴 코일(8)은 이웃한 스파이럴 코일(8a)을 건너뛰어 배치되면서 주름부(10)들이 타이어의 주행방향을 따라 V자와 역V자 형태로 연속적으로 배치된 것을 특징으로 하는 중하중용 타이어의 벨트구조.First belt 3, which is embedded in the tread 1, which is a rubber layer in contact with the road surface, is disposed adjacent to the carcass 2, and the second belt 4, which is sequentially stacked on the first belt 3, A heavy load having a belt layer 7 composed of a third belt 5 and a fourth belt 6, and a spiral coil group 9 disposed between the second belt 4 and the third belt 5. In the belt structure of a heavy tire,
The spiral coil 8 of the spiral coil group 9 is integrally formed and connected to the spiral coil 8, and the spiral coil 8 having the wrinkled portion 10 crosses the neighboring spiral coil 8a. The belt structure of the heavy-duty tire, characterized in that the wrinkles 10 are continuously arranged in a V-shaped and inverted V-shape along the running direction of the tire while jumping.
KR1020110088018A 2011-08-31 2011-08-31 Belt structure of heavy duty tire KR101232135B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101531988B1 (en) * 2013-07-26 2015-06-26 한국타이어 주식회사 Shaping process method of heavy duty tire and the heavy duty tire thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05301504A (en) * 1992-04-24 1993-11-16 Bridgestone Corp Pneumatic radial tire
WO1996035062A1 (en) 1995-05-01 1996-11-07 Bando Chemical Industries, Ltd. Cogged v belt
JP2000168311A (en) 1998-12-10 2000-06-20 Sumitomo Rubber Ind Ltd Heavy duty tire
JP2009292000A (en) 2008-06-04 2009-12-17 Bridgestone Corp Method of producing pneumatic tire and apparatus therefor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05301504A (en) * 1992-04-24 1993-11-16 Bridgestone Corp Pneumatic radial tire
WO1996035062A1 (en) 1995-05-01 1996-11-07 Bando Chemical Industries, Ltd. Cogged v belt
JP2000168311A (en) 1998-12-10 2000-06-20 Sumitomo Rubber Ind Ltd Heavy duty tire
JP2009292000A (en) 2008-06-04 2009-12-17 Bridgestone Corp Method of producing pneumatic tire and apparatus therefor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101531988B1 (en) * 2013-07-26 2015-06-26 한국타이어 주식회사 Shaping process method of heavy duty tire and the heavy duty tire thereof

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