KR100830044B1 - Pneumatic tire enforced bead member - Google Patents

Pneumatic tire enforced bead member Download PDF

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Publication number
KR100830044B1
KR100830044B1 KR1020060114824A KR20060114824A KR100830044B1 KR 100830044 B1 KR100830044 B1 KR 100830044B1 KR 1020060114824 A KR1020060114824 A KR 1020060114824A KR 20060114824 A KR20060114824 A KR 20060114824A KR 100830044 B1 KR100830044 B1 KR 100830044B1
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KR
South Korea
Prior art keywords
bead
cushion rubber
carcass
outside
rubber
Prior art date
Application number
KR1020060114824A
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Korean (ko)
Inventor
황두순
Original Assignee
한국타이어 주식회사
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Priority to KR1020060114824A priority Critical patent/KR100830044B1/en
Application granted granted Critical
Publication of KR100830044B1 publication Critical patent/KR100830044B1/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
    • B60C15/00—Tyre beads, e.g. ply turn-up or overlap
    • B60C15/02—Seating or securing beads on rims
    • 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
    • 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
    • B60C2200/00—Tyres specially adapted for particular applications
    • B60C2200/04—Tyres specially adapted for particular applications for road vehicles, e.g. passenger cars
    • 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
    • B60C2200/00—Tyres specially adapted for particular applications
    • B60C2200/14—Tyres specially adapted for particular applications for off-road use

Abstract

A pneumatic tire for enforcing a bead member is provided to enhance durability of a bead member by sequentially increasing each distance from a bead heel to the terminal ends of a bead filler, a rim cushion, a bead cushion rubber, and a carcass turn up. A pneumatic tire for enforcing a bead member comprises a tread(1), a side wall(2), and a bead part(3). The bead part consists of a bead chafer(33) wrapping a bead core and a bead filler, a carcass(4) wrapping the external part of the bead chafer, a bead cushion rubber(34) installed at the outside of the carcass, a rim cushion(35) placed at the outside of the bead cushion rubber. The distance from a bead heel to the terminal ends of the bead filler, of the rim cushion, of the bead cushion rubber, and of a carcass turn up is sequentially increased. The rim cushion rubber has an apex(351) outside, and is integrated with a side wall rubber to the apex. An external curved part(R2) of an overlapped portion has the curvature larger than a curved part(R1) of the side wall.

Description

비드부를 강화한 공기입 타이어 {Pneumatic tire enforced bead member}Pneumatic tire enforced bead member

도 1 은 본 발명의 바람직한 실시예의 요부 발췌 종 단면도1 is a cross-sectional view of the main portion of the excerpt of a preferred embodiment of the present invention

<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>

1. 트레드1. Tread

2. 사이드월2. Sidewall

3. 비드부 3. Bead part

31. 비드코어   31.Beadcore

32. 비드필러   32. Bead Filler

33. 비드 채퍼  33. Bead Chaper

34. 비드쿠션러버  34. Bead Cushion Rubber

35. 림쿠션  35. Rim Cushion

351. 정상부     351. Top

4. 카카스 4. Carcass

본 발명은 비드부를 강화하여 내구성을 향상시킨 자동차용 타이어를 제공하기 위한 것이다.The present invention is to provide a tire for an automobile having improved bead portion to improve durability.

상용차는 비교적 많은 하중의 짐을 싣고 또 비포장도로 등 가혹한 도로 조건에서 운행하는 등으로 타이어의 내구 성능이 급격히 저하될 염려가 있다. 따라서 이와 같은 상용차는 특히 내구 성능이 우수한 타이어를 필요로 한다. 그러나, 종래의 타이어는 이와 같은 특수 목적의 타이어가 제공된 바 없다. 종래의 타이어는 내구성 뿐 만이 아니라 승차감을 향상을 위한 노력을 포기할 수 없다고 생각하였기 때문으로 보인다.Commercial vehicles are loaded with relatively heavy loads and run under severe road conditions such as unpaved roads, which may lead to a rapid deterioration in tire durability. Therefore, such a commercial vehicle needs a tire which is especially excellent in durability. However, conventional tires have not been provided with such special purpose tires. It seems that conventional tires were not only able to give up their efforts to improve riding comfort as well as durability.

이에 본 발명은, 승차감 향상 등 기타의 성능에 대한 고려를 뒤로하고, 상용차가 특히 필요로 하는 내구성이 향상된 타이어를 제공하기 위한 것인 바, 이와 같은 본 발명의 타이어는, 비드힐로부터의 비드필러, 림쿠션, 비드쿠션러버 및 카카스턴업 단부의 각 끝단까지의 각 거리를 차례로 증가시키되 각 증가분을 5mm 이상으로 형성시켜서 된 것을 특징으로 한다. 이하 본 발명을 첨부된 도면에 의하여 상세히 설명한다.Accordingly, the present invention is to provide a tire with improved durability, which is particularly necessary for commercial vehicles, after consideration of other performances such as improved riding comfort, and the tire of the present invention is a bead filler from bead hills. The rim cushion, the bead cushion rubber and the carcassone up end of each increase in distance to each end of the end in order to increase each of the increment is characterized in that formed by 5mm or more. Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

트레드(1)와 사이드월(2) 및 비드부(3)로 구성되고, 비드부(3)가 비드코어(31)와 비드필러(32)를 비드 채퍼(Bead chafer; 33)로 감싸고 그 외부를 카카스(4)로 감싸며 카카스(4)의 외측에 비드쿠션러버(34)를 설치하고, 다시 그 외측에 림쿠션(35)을 설치하여서 된 것에 있어서, 본 발명은, 첨부된 도면 도1에 도시된 바와 같이, 비드힐(가)로부터 비드필러(32) 끝단, 림쿠션(35) 끝단, 비드쿠션러버(34) 끝단 및 카카스(4)턴업 끝단까지의 각 거리를 차례로 증가시키는 것을 특징으로 한다. 즉, 비드힐로부터, 비드필러(32) 끝단까지의 거리를 Hf, 카카스(4)턴업 끝단까지의 거리를 Hc, 비드쿠션러버(34) 끝단까지의 거리를 Hb, 림쿠션(35) 끝단까지의 거리를 Hr라 하면, 본 발명은 비드부를 Hc>Hb>Hr>Hf가 되도록 구성시키는 것을 특징으로 한다.It consists of a tread (1), a sidewall (2) and a bead portion (3), the bead portion (3) wraps the bead core (31) and the bead filler (32) with a bead chafer (33) and the outside thereof In which the bead cushion rubber 34 is provided on the outside of the carcass 4 and the rim cushion 35 is provided on the outside of the carcass 4, the present invention is attached to the accompanying drawings. As shown in Fig. 1, the respective distances from the bead hill to the end of the bead filler 32, the end of the rim cushion 35, the end of the bead cushion rubber 34, and the end of the carcass 4 turn-up are sequentially increased. It is characterized by. That is, the distance from the bead hill to the end of the bead filler 32, Hf, the distance from the end of the carcass 4 turn-up Hc, the distance from the end of the bead cushion rubber 34 to Hb, the end of the rim cushion 35 When the distance to Hr is referred to as Hr, the present invention is characterized in that the bead portion is constructed such that Hc> Hb> Hr> Hf.

본 발명은 이에서 나아가, 비드부(3)를 구성하는 위 요소들의 끝단부끼리의 거리는 끝단부의 중첩으로 인한 응력집중을 방지하기 위하여 5mm이상의 거리를 두게 형성시키는 것이 바람직하다. In the present invention, furthermore, the distance between the end portions of the above elements constituting the bead portion 3 is preferably formed at a distance of 5 mm or more in order to prevent stress concentration due to the overlap of the end portions.

그리고, 비드필러(32)의 높이(Hf)는 타이어의 섹션 하이트(SH)의 30% 이내가 되도록 형성시키는 것이 바람직하다. 이는 타이어의 굴신 운동시 굴신 운동 에너지를 분산시킬 수 있는 플렉시블 존(Flexible zone)을 충분히 확보하기 위함이다.The height Hf of the bead filler 32 is preferably formed to be within 30% of the section height SH of the tire. This is to secure a flexible zone capable of distributing flexural kinetic energy during flexion of the tire.

외측에 정상부(351)가 형성되는 림쿠션러버(35)는 정상부(351)에 이르도록 사이드월(2)고무가 겹치어 합체되는 바, 비드부의 보강을 위하여, 겹침부위가 볼록하도록 겹침부위 외곽 굴곡부(R2)의 곡률을 사이드월(2)의 굴곡부(R1)의 곡률보다 크게 형성시키는 것이 바람직하다.The rim cushion rubber 35 in which the top portion 351 is formed on the outside of the rim cushion rubber 35 overlaps the top wall 351 so that the rubber overlaps, so that the overlapping portion is convex for the reinforcement of the bead portion. It is preferable to make the curvature of the bend R2 larger than the curvature of the bend R1 of the sidewall 2.

이와 같은 본 발명은, 비드부가 현저히 보강되어 내구성을 강조하여야 할 상용차의 필요 요건을 충족시킬 수 있게 하며, 그러면서도 비드필러의 높이를 제한하여 플렉시블 존을 확보함으로서 가능한 한 하중의 분산 영역을 증가시키어 승차감의 악화를 방지할 수 있 효과가 있다.The present invention allows the bead portion to be reinforced to meet the requirements of a commercial vehicle to emphasize durability, while limiting the height of the bead filler to secure a flexible zone, thereby increasing the distribution area of the load as much as possible to ride comfort It is effective to prevent the deterioration of.

Claims (4)

삭제delete 삭제delete 삭제delete 트레드(1)와 사이드월(2) 및 비드부(3)로 구성되고, 비드부(3)가 비드코어(31)와 비드필러(32)를 비드 채퍼(Bead chafer; 33)로 감싸고 그 외부를 카카스(4)로 감싸며 카카스(4)의 외측에 비드쿠션러버(34)를 설치하고, 다시 그 외측에 림쿠션(35)을 설치하여서 된 것에 있어서, 비드힐(가)로부터의 비드필러(32) 끝단, 림쿠션(35) 끝단, 비드쿠션러버(34) 끝단 및 카카스(4)턴업 끝단까지의 각 거리를 차례로 증가시키고, 림쿠션러버(35)는 외측에 정상부(351)가 형성되고, 림쿠션러버(35)는 정상부(351)에 이르도록 사이드월(2)고무가 겹치어 합체되며, 겹침부위가 볼록하도록 겹침부위 외곽 굴곡부(R2)가 사이드월(2)의 굴곡부(R1)보다 곡률이 큰 것을 특징으로 하는 비드부를 강화한 공기입 타이어.It consists of a tread (1), a sidewall (2) and a bead portion (3), the bead portion (3) wraps the bead core (31) and the bead filler (32) with a bead chafer (33) and the outside thereof The bead from the bead hill (a) by wrapping the carcass 4 with the bead cushion rubber 34 on the outside of the carcass 4 and the rim cushion 35 on the outside thereof. Each distance to the end of the filler 32, the end of the rim cushion 35, the end of the bead cushion rubber 34 and the end of the carcass 4 turn-up is sequentially increased, and the rim cushion rubber 35 has a top 351 on the outside. Is formed, the rim cushion rubber 35 is merged by overlapping the side wall (2) rubber to reach the top portion 351, the overlapping portion outer bent portion (R2) so that the overlapping portion is convex, the bent portion of the side wall (2) The pneumatic tire which reinforced the bead part characterized by the curvature larger than (R1).
KR1020060114824A 2006-11-20 2006-11-20 Pneumatic tire enforced bead member KR100830044B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101040639B1 (en) 2008-12-02 2011-06-13 한국타이어 주식회사 Vehicle tire improved bead member
EP3281808A1 (en) 2016-08-08 2018-02-14 Hankook Tire Co., Ltd. A tire having chafer structure for enhancing bead endurance

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000068389A (en) * 1997-07-01 2000-11-25 사이토 나오토 Heavy duty radial tire

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000068389A (en) * 1997-07-01 2000-11-25 사이토 나오토 Heavy duty radial tire

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101040639B1 (en) 2008-12-02 2011-06-13 한국타이어 주식회사 Vehicle tire improved bead member
EP3281808A1 (en) 2016-08-08 2018-02-14 Hankook Tire Co., Ltd. A tire having chafer structure for enhancing bead endurance
US10766315B2 (en) 2016-08-08 2020-09-08 Hankook Tire Co., Ltd. Tire having chafer structure for enhancing bead endurance

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