KR20100006627A - Pneumatic vehicle tire - Google Patents

Pneumatic vehicle tire Download PDF

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Publication number
KR20100006627A
KR20100006627A KR1020080066829A KR20080066829A KR20100006627A KR 20100006627 A KR20100006627 A KR 20100006627A KR 1020080066829 A KR1020080066829 A KR 1020080066829A KR 20080066829 A KR20080066829 A KR 20080066829A KR 20100006627 A KR20100006627 A KR 20100006627A
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KR
South Korea
Prior art keywords
bead
bundle
pneumatic tire
carcass
cross
Prior art date
Application number
KR1020080066829A
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Korean (ko)
Inventor
김호수
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.)
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Publication date
Application filed by 한국타이어 주식회사 filed Critical 한국타이어 주식회사
Priority to KR1020080066829A priority Critical patent/KR20100006627A/en
Priority to CN2008101827800A priority patent/CN101623988B/en
Publication of KR20100006627A publication Critical patent/KR20100006627A/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
    • B60C15/00Tyre beads, e.g. ply turn-up or overlap
    • B60C15/04Bead cores
    • 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
    • B60C15/00Tyre beads, e.g. ply turn-up or overlap
    • B60C15/04Bead cores
    • B60C2015/044Bead cores characterised by a wrapping layer
    • 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
    • B60C15/00Tyre beads, e.g. ply turn-up or overlap
    • B60C15/04Bead cores
    • B60C2015/048Polygonal cores characterised by the winding sequence

Abstract

PURPOSE: A pneumatic tire for a vehicle is provided to secure the strength of a sidewall with a bead bundle without a bead filler by covering the top of the bead bundle with a rim cushion rubber after forming a carcass on the center of the outer surface of a bead bundle. CONSTITUTION: A pneumatic tire for a vehicle is composed of a tread part, a sidewall(2), and a bead part(3). The bead part comprises a bead bundle(31), a carcass(4), and a rim cushion rubber(32). The carcass covers the bead bundle and is formed on the center of the outer surface of the bead bundle. The ratio of the height about the width average of the cross section of a bead bundle is within 1:5~3:7.

Description

차량용 공기입 타이어{Pneumatic vehicle tire}Pneumatic vehicle tire

본 발명은 차량용 공기입 타이어에 관한 것으로, 특히 고성능 타이(UHPT)어라 통칭 되는 편평비가 낮은 타이어의 비드부 개량에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to pneumatic tires for vehicles, and more particularly, to improved bead portions of low flat tires, commonly referred to as high-performance tires (UHPT).

UHPT(Ultra High Performance Tire)로 구분되는 고성능 타이어에 대한 정의는 타이어 회사마다 다소 차이가 있으나 일반적으로 고속주행이 가능하고 편평비가 낮은 타이어를 통칭하고 있다. The definition of high-performance tires, which are classified as UHPT (Ultra High Performance Tires), varies somewhat among tire companies, but generally refers to tires capable of high-speed driving and low flatness.

타이어에 있어서, 림에 체결되는 부분은 도 1에 도시되는 바와 같이 비드번들(101), 비드필러(102)로 구성되는 비드부로 구성되는데, 타이어의 편평비가 낮을 수록 비드부로부터 트레드 상면까지의 높이(Section Height)가 작아지는데 이에 따라 비드필러의 크기도 작아지게 된다. 편평비가 25-30시리즈(Series)인 타이어의 경우 비드필러의 높이는 10mm 이하로 매우 작아지게 되어 압출 및 비드번들과의 결합이 용이하지 않게 된다. 특히 비드필러의 높이가 5mm 이하가 되어야 할 경우는 비드필러의 압출 및 비드번들과의 결합이 불가능하여 타이어 설계의 제약요소가 된 다.In the tire, the portion fastened to the rim is composed of a bead bundle consisting of the bead bundle 101 and the bead filler 102, as shown in Figure 1, the lower the flat ratio of the tire, the height from the bead to the upper surface of the tread (Section Height) becomes smaller, and accordingly, the size of the bead filler becomes smaller. In the case of tires with a flat ratio of 25-30 series, the height of the bead filler becomes very small, less than 10 mm, so that extrusion and bonding with the bead bundle are not easy. In particular, if the height of the bead filler should be 5mm or less, it is impossible to extrude the bead filler and to be combined with the bead bundle, which is a constraint of the tire design.

또한, 자동차용 타이어에 있어서의 비드부는 타이어를 림에 고정시키는 기능을 수행할 뿐 아니라, 핸들의 조작에 따르는 조향력이나 엔진의 구동력을 트레드에 이르기까지 전달하는 동력 전달의 기능을 수행하게 된다. 그런데 이와 같이 타이어를 림에 고정시키고 또 동력을 전달하는 동력 전달 계통에 존재하는 비드부는 상당한 정도의 경도를 가져야 하므로 비드필러를 고경도의 고무조성물로 형성시키지 않으면 아니되고, 또한 비드부는 자동차의 주행중 심한 충격과 굴신작용을 받게되므로 비드필러가 카카스와 분리되는 일이 없도록 비드필러는 이를 부드러운 고무조성물로 형성시켜야 한다는 모순되 조건을 만족시켜야 하는 어려움이 있는데, 평편비가 낮은 타이어에서 비드필러가 작아질 경우 사이드월 강성을 높이기 위한 사이드 보강제를 추가로 적용하는 것도 매우 어렵다.In addition, the bead part of the tire for the automobile not only performs a function of fixing the tire to the rim, but also performs a power transmission function of transmitting steering force or engine driving force up to the tread according to the operation of the handle. However, since the bead portion existing in the power transmission system that fixes the tire to the rim and transmits power must have a considerable degree of hardness, the bead filler must be formed of a high hardness rubber composition, and the bead portion must be formed while the vehicle is being driven. There is a difficulty in satisfying the contradictory condition that the bead filler must be formed of a soft rubber composition so that the bead filler is not separated from the carcass because it is subjected to severe impact and flexing. In this case, it is also very difficult to apply additional side reinforcement to increase the sidewall stiffness.

즉, 타이어의 제작에 있어서, 평편비가 낮을수록 비드필러가 작아져 반제품 제작과정 중 비드번들과의 결합이 어려운 문제점과, 비드필러 높이가 10mm 이하가 될 경우 비드필러의 압출제작이 어려운 문제점을 해결해야 한다. In other words, in the manufacture of tires, the lower the flat ratio, the smaller the bead filler, which makes it difficult to combine with the bead bundle during the semi-finished manufacturing process, and when the bead filler height becomes less than 10mm, it is difficult to manufacture the bead filler extrusion. Should be.

이에, 본 발명은 비드부에 삽입되는 비드번들 단면폭의 평균과 높이의 비를 1:5 - 3:7로 하고, 카카스를 비드번들의 외측면 중앙에서 종지시키고, 비드필러에 갈음하여 림쿠션러버가 비드번들의 상부를 덮도록 구성함으로써, 비드필러 없이 비드번들만 사용하면서도 충분한 사이드월 강성을 확보하는 방법을 제공하고자 한다.Therefore, in the present invention, the ratio of the average width and the height of the bead bundle cross section inserted into the bead portion is 1: 5-3: 7, the carcass is terminated at the center of the outer surface of the bead bundle, and replaced by the bead filler, and the rim cushion By configuring the rubber to cover the top of the bead bundle, it is intended to provide a method of ensuring sufficient sidewall rigidity while using only the bead bundle without the bead filler.

본 발명에 의하면, 평편비가 낮은 타이어의 제작에 있어서, 종래의 제조방식을 그대로 사용하면서도 비드필러에 갈음하여 림쿠션러버의 부피를 크게 하고, 비드번들의 높이를 높임으로써 작은 비드필러를 타이어에 결합하거나 작은 비드필러를 압출해야하는 난해한 공정 없이 타이어를 제조할 수 있고, 비드번들의 높이가 증가함에 따라 해당위치 사이드월의 강성을 증대시키는 효과가 있다.According to the present invention, in the manufacture of low-flat tires, the bead filler is replaced with the bead filler to increase the volume of the rim cushion rubber and increase the height of the bead bundle while using the conventional manufacturing method as it is. The tire can be manufactured without the difficult process of having to extrude or bend a small bead filler, and as the height of the bead bundle increases, there is an effect of increasing the rigidity of the sidewall at the corresponding position.

본 발명은 트레드부와 사이드월(2) 및 비드부(3)로 구성되고, 비드부(3)는 비드번들(31) 및 이를 감싸는 카카스(4)와 림쿠션러버(32)를 포함하는 것에 있어서, 비드부(3)에 삽입되는 비드번들(31)의 단면폭의 평균과 높이의 비가 1:5 - 3:7인 것을 특징으로 한다. The present invention is composed of a tread portion, sidewall (2) and bead portion (3), the bead portion (3) comprises a bead bundle (31) and the surrounding carcass 4 and the rim cushion rubber (32) In this case, the ratio of the average width and the height of the cross-sectional width of the bead bundle 31 inserted into the bead portion 3 is characterized in that 1: 5 to 3: 7.

비드부의 강성은 일정하여야 하기 때문에 이에 따라 비드번들에 적용되는 가닥 수가 정해지게 된다. 즉, 비드번들(31)의 단면형성을 변화시키되, 정해진 가닥 수 내에서 비드번들의 단면형상을 바꾸기 위하여 비드번들의 폭을 줄이고 높이를 높게 하여 가늘게 한다.Since the stiffness of the bead portion must be constant, the number of strands applied to the bead bundle is determined accordingly. That is, the cross-sectional formation of the bead bundle 31 is changed, but in order to change the cross-sectional shape of the bead bundle within a predetermined number of strands, the width of the bead bundle is reduced and the height is made thin.

또한, 비드필러를 사용하지 아니하므로 림쿠션러버(32)가 비드번들(31)에 접할 수 있도록 카카스(4)는 비드번들(31)의 외측면 중앙(a)에서 종지되고, 비드필러에 갈음하여 림쿠션러버(32)가 비드번들(31)의 상부를 덮는다.In addition, since the bead filler is not used, the carcass 4 is terminated at the center (a) of the outer side of the bead bundle 31 so that the rim cushion rubber 32 may be in contact with the bead bundle 31. The rim cushion rubber 32 covers the upper part of the bead bundle 31 by being replaced.

상기 비드부는 도 3의 (가)에 도시되는 바와 같이, 그 단면이 총 20개의 가닥을 기준으로, 비드가닥 2개가 한쌍으로 10회 적층된 구조를 갖는 것이 바람직하며, 도 3의 (나)에 도시된 바와 같이 총 20 개의 가닥을 기준으로 하되, 비드부의 단면이 상부가 길고 하부가 짧은 십자형의 구조를 가질 수 있다.As shown in (a) of FIG. 3, the bead portion has a structure in which two bead strands are stacked ten times in pairs based on a total of 20 strands, and in FIG. As shown, based on a total of 20 strands, the cross section of the bead portion may have a cross-shaped structure having a long upper portion and a shorter lower portion.

즉, 종래 타이어 제조 방법을 크게 바꾸지 아니하면서, 작아지는 비드필러의 제조과정을 생략하고, 비드번들의 구조를 변형시킴으로써 림쿠션의 부피를 크게 하여 기존 타이어 성능을 유지시키면서도 사이드월 강성을 높일 수 있다. In other words, the manufacturing process of the bead filler is reduced, without changing the conventional tire manufacturing method significantly, and by modifying the structure of the bead bundle to increase the volume of the rim cushion to increase the sidewall stiffness while maintaining the existing tire performance. .

도 1은 종래의 차량용 공기입 타이어의 단면도.1 is a cross-sectional view of a conventional pneumatic tire for a vehicle.

도 2는 본 발명의 차량용 공기입 타이어의 요부 단면도.2 is a sectional view of principal parts of a pneumatic tire for a vehicle according to the present invention;

도 3은 본 발명의 차량용 공기입 타이어의 비드부 형상의 예시도.Figure 3 is an illustration of the shape of the bead portion of a pneumatic tire for a vehicle of the present invention.

<도면의 주요 부호에 대한 설명><Description of Major Symbols in Drawing>

2. 사이드월2. Sidewall

3. 비드부3. Bead part

31. 비드번들31.Bead Bundle

32. 림쿠션러버32. Lymph Cushion Rubber

4. 카카스4. Carcass

Claims (4)

트레드부와 사이드월 및 비드부로 구성되고, 비드부는 비드번들 및 이를 감싸는 카카스와 림쿠션러버를 포함하는 것에 있어서, 비드부에 삽입되는 비드번들의 단면폭의 평균과 높이의 비가 1:5 - 3:7인 것을 특징으로 하는 차량용 공기입 타이어.Comprising a tread portion, a side wall and a bead portion, the bead portion includes a bead bundle, and a carcass and a rim cushion rubber surrounding the bead, wherein the ratio of the average width and the height of the cross-sectional width of the bead bundle inserted into the bead portion is 1: 5-3: 7. The pneumatic tire for a vehicle, characterized by the above-mentioned. 제 1항에 있어서, 카카스가 비드번들의 외측면 중앙에서 종지되고, 비드필러에 갈음하여 림쿠션러버가 비드번들의 상부를 덮는 것을 특징으로 하는 차량용 공기입 타이어.2. The pneumatic tire according to claim 1, wherein the carcass is terminated at the center of the outer side of the bead bundle, and the rim cushion rubber covers the upper portion of the bead bundle in place of the bead filler. 제 1항 또는 제 2항에 있어서, 상기 비드부는 비드가닥 2개가 한쌍으로 10회 적층된 구조를 갖는 것을 특징으로 하는 차량용 공기입 타이어.The pneumatic tire for a vehicle according to claim 1 or 2, wherein the bead portion has a structure in which two bead strands are stacked 10 times in pairs. 제 1항 또는 제 2항에 있어서, 상기 비드부의 단면이 상부가 길고 하부가 짧은 십자형상인 것을 특징으로 하는 차량용 공기입 타이어.3. The pneumatic tire for a vehicle according to claim 1 or 2, wherein a cross section of the bead portion has a long cross section and a short cross section.
KR1020080066829A 2008-07-10 2008-07-10 Pneumatic vehicle tire KR20100006627A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020080066829A KR20100006627A (en) 2008-07-10 2008-07-10 Pneumatic vehicle tire
CN2008101827800A CN101623988B (en) 2008-07-10 2008-12-04 Inflatable pneumatic tyre for vehicle

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Application Number Priority Date Filing Date Title
KR1020080066829A KR20100006627A (en) 2008-07-10 2008-07-10 Pneumatic vehicle tire

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KR20100006627A true KR20100006627A (en) 2010-01-21

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20230064092A (en) 2021-11-03 2023-05-10 넥센타이어 주식회사 Pneumatic tire with cord reinforcement for the bead filler

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2012176447A1 (en) * 2011-06-20 2015-02-23 株式会社ブリヂストン Pneumatic tire
FR3038545A1 (en) * 2015-07-10 2017-01-13 Michelin & Cie PNEUMATIC COMPRISING ELASTOMERIC MIXTURES WITH LOW SULFUR CONTENT

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20230064092A (en) 2021-11-03 2023-05-10 넥센타이어 주식회사 Pneumatic tire with cord reinforcement for the bead filler

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CN101623988B (en) 2012-06-06
CN101623988A (en) 2010-01-13

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