KR100462204B1 - Heavy duty pneumatic radial tire having improved bead durability - Google Patents
Heavy duty pneumatic radial tire having improved bead durability Download PDFInfo
- Publication number
- KR100462204B1 KR100462204B1 KR10-1999-0020350A KR19990020350A KR100462204B1 KR 100462204 B1 KR100462204 B1 KR 100462204B1 KR 19990020350 A KR19990020350 A KR 19990020350A KR 100462204 B1 KR100462204 B1 KR 100462204B1
- Authority
- KR
- South Korea
- Prior art keywords
- bead
- bead filler
- filler
- carcass
- durability
- Prior art date
Links
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
- B60C15/0603—Flipper strips, fillers, or chafing strips and reinforcing layers for the construction of the bead characterised by features of the bead filler or apex
- B60C15/0607—Flipper strips, fillers, or chafing strips and reinforcing layers for the construction of the bead characterised by features of the bead filler or apex comprising several parts, e.g. made of different rubbers
-
- 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
- B60C15/0603—Flipper strips, fillers, or chafing strips and reinforcing layers for the construction of the bead characterised by features of the bead filler or apex
- B60C2015/061—Dimensions of the bead filler in terms of numerical values or ratio in proportion to section height
-
- 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
- B60C2015/0614—Flipper strips, fillers, or chafing strips and reinforcing layers for the construction of the bead characterised by features of the chafer or clinch portion, i.e. the part of the bead contacting the rim
Abstract
본 발명은 비드코아를 턴업하는 카카스가 비드필러의 사이를 삽입되면서 비드필러를 감쌀 수 있도록 설치시킴으로서, 비드부 파열을 방지할 수 있게 하는 비드 내구성을 향상시킨 중하중용 래디알 타이어에 관한 것이다.The present invention relates to a heavy-loaded radial tire that improves bead durability by preventing bead rupture by installing a carcass that turns up the bead core so as to wrap the bead filler while being inserted between the bead fillers.
이를 위한 본 발명은 다수의 와이어가 합체되어 형성되는 비드코어(5)의 상면에 비드필러(1)를 설치시키고, 비드코어(5)와 비드필러(1)의 외측에 카카스플라이(3)를 턴업설치시키며, 카카스 플라이(3)의 턴업부의 외측에 스틸체퍼(4)를 설치시켜 구성되는 것에 있어서, 상기 비드필러(1)를 상부비드필러(11), 중간비드필러(12), 하부비드필러(13)로 분할 형성시키고, 비드 코아(5)를 턴업한 카카스플라이(3)가 하부비드필러(13)와 중간비드필러(12) 사이로 삽입되게 하고, 카카스플라이(3) 선단이 중간비드필러(12)의 외측면을 감싸도록 설치시켜 구성함으로써, 비드부 파열을 방지하여 타이어의 내구 수명을 연장시킬 수 있는 효과가 있는 것임.The present invention for this purpose is to install the bead filler (1) on the upper surface of the bead core (5) formed by coalescing a plurality of wires, the carcass splice (3) outside the bead core (5) and the bead filler (1) Turn-up installation, and the steel bead (4) is provided on the outside of the turn-up of the carcass ply (3), the bead filler (1) upper bead filler (11), intermediate bead filler (12), The lower bead filler 13 is divided into pieces, and the carcass splice 3 with the bead core 5 turned up is inserted between the lower bead filler 13 and the intermediate bead filler 12, and the carcass splice 3. The tip is installed so as to surround the outer surface of the intermediate bead filler 12, thereby preventing the bead portion rupture, thereby extending the durability life of the tire.
Description
본 발명은 비드 내구성을 향상시킨 중하중용 래디알 타이어에 관한 것으로, 더욱 상세하게는 비드코아를 턴업하는 카카스가 비드필러의 사이에 삽입되면서 비드필러를 감쌀 수 있도록 설치시킴으로서, 비드부 파열을 방지할 수 있게 하는 비드 내구성을 향상시킨 중하중용 래디알 타이어에 관한 것이다.The present invention relates to a heavy-duty radial tire with improved bead durability, and more particularly, by installing the carcass to turn the bead core is wrapped between the bead filler while being installed between the bead filler, to prevent bead rupture The present invention relates to a heavy-duty radial tire with improved bead durability.
일반적으로 공기입 래디알 타이어는 바이어스 타이어에 비하여 많은 변형량을 가지며, 특히 유연한 사이드월을 가지므로 인하여 비드부와 연결된 부위에서 심한 변형을 나타낸다.In general, pneumatic radial tires have a large amount of deformation in comparison with bias tires, and in particular, because they have a flexible sidewall, severe pneumatic radial tires show severe deformation at the portion connected to the bead portion.
이러한 변형은 타이어의 주행중에 반복적으로 변형을 일으켜 비드부의 박리현상 및 파열을 유도하여 타이어의 내구성에 중대한 영향을 미치게 된다.This deformation repeatedly deforms while the tire is running, leading to peeling and rupture of the bead portion, which significantly affects the durability of the tire.
첨부된 도면 도 1 은 종래의 비드부를 도시한 발췌 단면도이다.1 is a cross-sectional view showing a conventional bead portion.
도 1 에 도시되는 바와 같이 종래의 비드부는 다수의 와이어가 합체되어 형성되는 비드코어(5)의 상면에 비드필러(1)를 설치시키고, 비드코어(5)와 비드필러(1)의 외측에 카카스플라이(3)를 턴업설치시키며, 카카스 플라이(3)의 턴업부의 외측에 스틸체퍼(4)를 설치시켜 구성되는 것으로, 상기 비드필러(1)는 상하로 분할되어 하측(12)은 고경도 고무로 형성시키고, 상측(11) 경도가 낮은 저경도 고무로 형성시켜 구성되는 것이다.As shown in FIG. 1, the bead portion of the conventional bead is provided with the bead filler 1 on the upper surface of the bead core 5 formed by incorporating a plurality of wires, and is disposed outside the bead core 5 and the bead filler 1. The carcass ply (3) is turned up and installed, and the steel chafer (4) is provided outside the turn-up of the carcass ply (3). The bead filler (1) is divided up and down, and the lower side (12) is It is formed by high hardness rubber, and is formed by forming low hardness rubber with low hardness of the upper side 11.
이러한 구조는 중하중용 공기입 래디알 타이어에서 잘 적용되어 왔으나 최근들어 각 운수 및 운송업체에서 과하중이나 과다한 운행 시간등 가혹한 사용 조건에서 사용하는 빈도가 높고 비용 절감을 위해 트래드부를 재생하여 다시 사용하는 예가 늘고 있어 내구성을 특별히 향상시킨 비드 보강구조를 필요로 하게 되었다.This structure has been well applied to heavy-duty pneumatic radial tires. However, in recent years, the transportation and transportation companies are frequently used under severe load conditions such as overload or excessive running time, and the recycled tread section is reused for cost reduction. Increasingly, there is a need for a bead reinforcement structure that specifically improves durability.
첨부된 도면 도 2 는 비드내구성을 향상시킨 종래의 비드부 보강구조를 도시한 단면도이다.2 is a cross-sectional view showing a conventional bead portion reinforcement structure having improved bead durability.
도 2 에 도시되는 바와 같이, 비드코아(5)을 턴업한 카카스플라이(3) 말단이 상하 비드필러(11)(12)의 사이에 삽입되게 구성하여 비드부의 박리현상을 방지하는 구조를 사용하였다.As shown in FIG. 2, the end of the carcass splice 3, which has turned the bead core 5, is inserted between the upper and lower bead fillers 11 and 12 to prevent peeling of the bead portion. It was.
그러나 이 또한 충분한 내구성을 가지지 못하는 것이다.But this too does not have sufficient durability.
본 발명은 전술한 문제점을 해결하기 위해 안출된 것으로서, 본 발명은 비드코아를 턴업하는 카카스가 비드필러의 사이를 삽입되면서 비드필러를 감쌀 수 있도록 설치시킴으로서, 비드부 파열을 방지할 수 있게 하는 비드 내구성을 향상시킨 중하중용 래디알 타이어를 제공함에 그 목적이 있다.The present invention has been made to solve the above problems, the present invention is to install the carcass to turn the bead core to wrap the bead filler while being inserted between the bead filler, it is possible to prevent the bead rupture It is an object of the present invention to provide a heavy-duty radial tire with improved bead durability.
본 발명은 상기와 같은 목적을 달성하기 위하여 다음과 같이 구성된다. 즉, 본 발명은 다수의 와이어가 합체되어 형성되는 비드코어의 상면에 비드필러를 설치시키고, 비드코어와 비드필러의 외측에 카카스플라이를 턴업설치시키며, 카카스 플라이의 턴업부의 외측에 스틸체퍼를 설치시켜 구성되는 것에 있어서, 상기 비드필러를 상중하로 분할 형성시키고, 비드 코아를 턴업한 카카스플라이가 하부와 중간비드필러 사이로 삽입되게 하고, 카카스플라이 선단이 중간필러를 외측면을 감싸도록 설치시켜 구성되는 것에 특징을 둔 것이다.The present invention is configured as follows to achieve the above object. That is, according to the present invention, the bead filler is installed on the upper surface of the bead core formed by coalescing a plurality of wires, the carcass ply is turned up on the outside of the bead core and the bead filler, and the steel chafer is formed on the outside of the turn-up part of the carcass ply. In this configuration, the bead filler is divided into the upper and lower parts, the carcass ply turned up the bead core is inserted between the lower and the middle bead filler, and the carcass splice front end to surround the outer filler It is characterized by being installed and configured.
도 1 은 종래의 비드부를 도시한 발췌 단면도1 is a cross-sectional view showing a conventional bead portion
도 2 는 종래의 비드부 보강 구조를 도시한 단면도2 is a cross-sectional view showing a conventional bead portion reinforcement structure
도 3 은 본 발명에 따른 비드보강구조를 도시한 단면도Figure 3 is a cross-sectional view showing the bead reinforcement structure according to the present invention
이하에서는 첨부된 도면을 참조하여 본 발명의 바람직한 실시 예를 상세히 설명하기로 한다.Hereinafter, with reference to the accompanying drawings will be described a preferred embodiment of the present invention;
첨부된 도면 도 3 은 본 발명에 따른 비드보강구조를 도시한 단면도이다.3 is a cross-sectional view showing a bead reinforcing structure according to the present invention.
도 3 에 도시되는 바와 같이, 본 발명은 다수의 와이어가 합체되어 형성되는 비드코어(5)의 상면에 비드필러(1)를 설치시키고, 비드코어(5)와 비드필러(1)의 외측에 카카스플라이(3)를 턴업설치시키며, 카카스 플라이(3)의 턴업부의 외측에 스틸체퍼(4)를 설치시켜 구성되는 것에 있어서, 상기 비드필러(1)를 상부비드필러(11), 중간비드필러(12), 하부비드필러(13)로 분할 형성시키고, 비드 코아(5)를 턴업한 카카스플라이(3)가 하부비드필러(13)와 중간비드필러(12) 사이로 삽입되게 하고, 카카스플라이(3) 선단이 중간비드필러(12)의 외측면을 감싸도록 설치시켜 구성되는 것으로서, 상기 중간비드필러(12)의 외측면을 감싸는 카카스플라이(3)의 선단외측에 스틸체퍼(4)와 섬유체퍼(6)를 설치시켜 카카스 선회 선단의 변형 및 분리현상을 억제시킬 수 있도록 구성된다.As shown in FIG. 3, in the present invention, the bead filler 1 is installed on the upper surface of the bead core 5 formed by incorporating a plurality of wires, and is disposed outside the bead core 5 and the bead filler 1. The bead filler (1), the upper bead filler (11), the middle, wherein the carcass ply (3) is turned up and installed, and the steel chafer (4) is provided outside the turn-up portion of the carcass ply (3). The bead filler (12), the lower bead filler (13) is divided into a carcass ply (3) turned up bead core (5) is inserted between the lower bead filler (13) and the intermediate bead filler (12), The tip of the carcass splice 3 is configured to surround the outer surface of the intermediate bead filler 12, the steel chafer on the outer side of the front end of the carcass splice 3 surrounding the outer surface of the intermediate bead filler 12 (4) and the fiber chaper (6) are provided so that deformation and separation of the carcass turning tip can be suppressed.
그리고 상기 하부비드필러(13)는 비드코아(5)와의 긴밀한 결속을 위하여 고경도의 합성고무로 형성시키며, 쇼어경도 85 내지 105의 범위 내에서 형성시킨다.The lower bead filler 13 is formed of synthetic rubber of high hardness for tight binding with the bead core 5 and is formed within the range of Shore hardness 85 to 105.
중간비드필러(12)는 하부비드필러(13) 보다 경도가 작은 쇼어경도 60 내지80의 범위 내에서 형성시킨다.The intermediate bead filler 12 is formed in the range of Shore hardness of 60 to 80, the hardness of which is lower than the lower bead filler (13).
상부비드필러(11)는 사이드월부의 유연성을 위하여 경도가 작은 재질로 형성시키며 쇼어경도 50 내지 65의 범위 내에서 형성시킨다.The upper bead filler 11 is formed of a material having a small hardness for flexibility of the side wall portion and formed within the range of Shore hardness of 50 to 65.
그리고 중간비드필러(12)의 높이(h1)는 비드필러(1) 전체 높이(h)× 0.6 내지 0.75의 범위 내에서 형성시키고, 하부비드필러(13)의 높이(h2)는 비드필러 전체 높이(h)× 0.35 내지 0.55의 범위 내에서 형성시킨다.And the height h1 of the intermediate bead filler 12 is formed in the range of the height of the bead filler 1 (h) × 0.6 to 0.75, the height (h2) of the lower bead filler 13 is the total height of the bead filler (h) x It is formed in the range of 0.35 to 0.55.
또한 중간비드필러(12)를 감싸는 카카스플라이(3)의 선단높이(h3)는 비드필러 전체 높이(h)× 0.25 내지 0.35의 범위 내에서 형성시킨다.In addition, the tip height h3 of the carcass splice 3 surrounding the intermediate bead filler 12 is formed within the range of the bead filler total height h × 0.25 to 0.35.
이와 같이 구성되는 본 발명은 카카스 선회 선단의 분리현상에 의한 비드내구성에 형향을 준다고 판단되는 카카스 선회 선단부근의 변형에너지밀도 및 단면방향의 전단변형량이 표 1 에서와 같이 현저하게 감소되는 것을 알 수 있다.According to the present invention, the deformation energy density and the shear strain in the cross-sectional direction of the carcass swing tip are determined to have a significant effect on the bead durability due to the separation phenomenon of the carcass swing tip. Able to know.
또한 비드내구성을 평가할 수 있는 특정 시험법(TD06)을 이용하여 실험한 결과 실제로 비드 내구성이 표 2에서와 같이 향상되는 것을 알 수 있다.In addition, as a result of experiments using a specific test method (TD06) to evaluate the bead durability it can be seen that the bead durability actually improves as shown in Table 2.
표. 1table. One
표. 2table. 2
본 발명은 전술한 실시 예에 한정되지 않고 본 발명의 기술사상이 허용하는범위 내에서 다양하게 변형하여 실시할 수가 있다.The present invention is not limited to the above embodiments, and various modifications can be made within the scope of the technical idea of the present invention.
이상에서와 같이 본 발명에 따르면 비드코아를 턴업하는 카카스가 비드필러의 사이를 삽입되면서 비드필러를 감싸도록 설치됨에 따라 비드부 파열을 방지하여 타이어의 내구 수명을 연장시킬 수 있는 효과가 있다.As described above, according to the present invention, as the carcass that turns up the bead core is installed to cover the bead filler while being inserted between the bead fillers, there is an effect of preventing the bead portion from being ruptured to extend the durability life of the tire.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-1999-0020350A KR100462204B1 (en) | 1999-06-03 | 1999-06-03 | Heavy duty pneumatic radial tire having improved bead durability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-1999-0020350A KR100462204B1 (en) | 1999-06-03 | 1999-06-03 | Heavy duty pneumatic radial tire having improved bead durability |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR20010001255A KR20010001255A (en) | 2001-01-05 |
| KR100462204B1 true KR100462204B1 (en) | 2004-12-16 |
Family
ID=19589641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR10-1999-0020350A KR100462204B1 (en) | 1999-06-03 | 1999-06-03 | Heavy duty pneumatic radial tire having improved bead durability |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR100462204B1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101379554B1 (en) * | 2012-08-02 | 2014-03-28 | 한국타이어 주식회사 | Truck and Bus Tire with Improved Bead Durability |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02293207A (en) * | 1989-05-01 | 1990-12-04 | Toyo Tire & Rubber Co Ltd | Pneumatic tire |
| KR940020463U (en) * | 1993-02-02 | 1994-09-17 | Heavy-duty pneumatic tires with reinforced tire beads | |
| KR940020464U (en) * | 1993-02-04 | 1994-09-17 | Pneumatic radial tire with reinforced bead | |
| US5433257A (en) * | 1987-10-24 | 1995-07-18 | Bridgestone Corporation | Heavy duty pneumatic radial tires with specified carcass turnup arrangement |
| KR970008507U (en) * | 1995-08-25 | 1997-03-27 | 금호타이어주식회사 | Pneumatic Radial Tire for Passenger Car |
-
1999
- 1999-06-03 KR KR10-1999-0020350A patent/KR100462204B1/en not_active IP Right Cessation
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5433257A (en) * | 1987-10-24 | 1995-07-18 | Bridgestone Corporation | Heavy duty pneumatic radial tires with specified carcass turnup arrangement |
| JPH02293207A (en) * | 1989-05-01 | 1990-12-04 | Toyo Tire & Rubber Co Ltd | Pneumatic tire |
| KR940020463U (en) * | 1993-02-02 | 1994-09-17 | Heavy-duty pneumatic tires with reinforced tire beads | |
| KR940020464U (en) * | 1993-02-04 | 1994-09-17 | Pneumatic radial tire with reinforced bead | |
| KR970008507U (en) * | 1995-08-25 | 1997-03-27 | 금호타이어주식회사 | Pneumatic Radial Tire for Passenger Car |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20010001255A (en) | 2001-01-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6135183A (en) | Runflat tire with different modulus or elongation carcass cords | |
| US6345657B1 (en) | Pneumatic radial tires for trucks and buses mounted on 15 degree drop center rim | |
| US5772811A (en) | Heavy duty radial tire with specified bead core inside diameter | |
| US20030089440A1 (en) | Pneumatic tire | |
| US6257290B1 (en) | Low-aspect tire | |
| US5029627A (en) | Radial ply tire for heavy duty vehicles | |
| US5979527A (en) | Heavy duty pneumatic radial tires with at least three bead portion rubbers | |
| EP0698513B1 (en) | Pneumatic radial tires | |
| KR100462204B1 (en) | Heavy duty pneumatic radial tire having improved bead durability | |
| US6651715B2 (en) | Pneumatic radial tires for truck and bus mounted on 15° drop center rim | |
| KR100462209B1 (en) | heavy duty radial tire having improved bead durability | |
| KR101127637B1 (en) | Tire for heavy duty with bead part reinforcement | |
| KR100266897B1 (en) | Radial tire structure | |
| KR20050054977A (en) | Extended mobility tyre comprising bead with symmetrical force distribution | |
| KR100553080B1 (en) | Pneumatic tire having improved bead durabillty | |
| KR20030042060A (en) | Heavy duty radial tire having improved bead durability | |
| KR20040029607A (en) | Pneumatic tire having improved bead durability | |
| KR100272968B1 (en) | Heavy duty pnematic radial tire with impreoved durability of a bead | |
| KR100826078B1 (en) | Heavy-duty pneumatic tire | |
| KR100338304B1 (en) | Pneumatic Vehicle Bias Tire | |
| KR20050050266A (en) | Pneumatic tire for heavy vehicle | |
| KR100462198B1 (en) | Pneumatic tire having improved bead durability | |
| KR100504070B1 (en) | Pneumatic tire having improved bead durability | |
| KR20090002847U (en) | A Wheel for Run-Flat Tire and Run-Flat Tire | |
| KR100498022B1 (en) | Pneumatic tire having improved bead durability |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A201 | Request for examination | ||
| E701 | Decision to grant or registration of patent right | ||
| GRNT | Written decision to grant | ||
| FPAY | Annual fee payment |
Payment date: 20081203 Year of fee payment: 6 |
|
| FPAY | Annual fee payment |
Payment date: 20101130 Year of fee payment: 9 |
|
| LAPS | Lapse due to unpaid annual fee |