KR20100062429A - Tire for heavy truck improved bead member - Google Patents

Tire for heavy truck improved bead member Download PDF

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Publication number
KR20100062429A
KR20100062429A KR1020080121070A KR20080121070A KR20100062429A KR 20100062429 A KR20100062429 A KR 20100062429A KR 1020080121070 A KR1020080121070 A KR 1020080121070A KR 20080121070 A KR20080121070 A KR 20080121070A KR 20100062429 A KR20100062429 A KR 20100062429A
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KR
South Korea
Prior art keywords
carcass
bead
tire
filler
lower filler
Prior art date
Application number
KR1020080121070A
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Korean (ko)
Inventor
장윤태
Original Assignee
한국타이어 주식회사
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Publication date
Application filed by 한국타이어 주식회사 filed Critical 한국타이어 주식회사
Priority to KR1020080121070A priority Critical patent/KR20100062429A/en
Publication of KR20100062429A publication Critical patent/KR20100062429A/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
    • B60C15/06—Flipper strips, fillers, or chafing strips and reinforcing layers for the construction of the bead
    • 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
    • B60C15/0009—Tyre beads, e.g. ply turn-up or overlap features of the carcass terminal portion
    • B60C15/0027—Tyre beads, e.g. ply turn-up or overlap features of the carcass terminal portion with low ply turn-up, i.e. folded around the bead core and terminating at the bead core
    • 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
    • B60C15/0628—Flipper strips, fillers, or chafing strips and reinforcing layers for the construction of the bead comprising a bead reinforcing layer
    • B60C15/0632—Flipper strips, fillers, or chafing strips and reinforcing layers for the construction of the bead comprising a bead reinforcing layer using flippers in contact with and wrapped around the bead core and, at least partially, in contact with the bead filler
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L21/00—Compositions of unspecified 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
    • B60C15/0628—Flipper strips, fillers, or chafing strips and reinforcing layers for the construction of the bead comprising a bead reinforcing layer
    • B60C2015/0678—Physical properties of the bead reinforcing layer, e.g. modulus of the ply
    • 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
    • B60C2200/06—Tyres specially adapted for particular applications for heavy duty vehicles

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Tires In General (AREA)

Abstract

PURPOSE: A tire for a heavy truck with an improved bead part is provided to prevent a carcass from being separated from a lower filler by reducing frictional stress between the carcass and the lower filler. CONSTITUTION: A tire for a heavy truck with an improved bead part comprises a bead part(1), a carcass(4), and a bumper seat(5). The carcass covers bead bundles(2) and a bead filler. The bumper seat is installed between a lower filler(31) and the carcass. And the bumper seat has a 0.4~1.2mm thickness. The end of the carcass is parallel with the inner carcass.

Description

비드부를 개량한 중하중 트럭용 타이어{Tire for heavy truck improved bead member}Tire for heavy truck improved bead member

본 발명은 중하중 트럭용 타이어에 관한 것으로, 특히, 비드부를 개량하여서 된 중하중 트럭용 타이어에 관한 것이다. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heavy duty truck tire, and more particularly, to a heavy duty truck tire by improving the bead portion.

중하중 트럭에 있어서는 허용 하중보다 큰 하중의 짐을 적재한다거나 도로 조건이 열악한 상태에 운행되는 일이 많아 타이어에 부하되는 응력이 크다. 이와 같이 큰 응력에 견딜 수 있도록 하기 위한 노력으로 종래에 있어서 타이어의 구조개량에 많은 노력이 경주되어 왔다. 특히 타이어의 응력은 차량과 타이어를 연결하는 비드부에 많이 집중 된다. 이러한 비드부는 비드번들을 카카스로 감싸되 비드번들 상부에 비드필러를 채워 비드번들 상부에 공간이 생기지 아니하게 하며 비드번들과 카카스의 결합을 견고하게 하여 구성시킨다. 그런데, 종래의 타이어에 있어서의 비드필러는, 비드번들의 움직임을 방지할 수 있도록 견고한 물성을 가지는 고무조성물로 된 하부필러와 카카스단부라던가 채퍼와의 결합 및 카카스단부나 채퍼의 움직임을 흡수 완충시키기 위한 부드러운 물성을 가지는 고무조성물로 된 상부필러로 구성되어 있으며, 하부필러는 첨부된 도면에 도시된 바와 같이, 대략 삼각형의 형태를 가지며 내측변은 카카스와 접하고 외측변은 상부필러와 접하게 형성되는 바, 이와 같은 종래의 타이어에 있어서는 경도가 높은 하부필러와 카카스 사이에 접착 상태가 불량하여 공기가 들어갈 염려가 있고, 하부필러와 카카스 사이에 마찰 응력이 커서 카카스와 하부필러의 분리 현상을 유발하며, 하부필러와 카카스 사이의 마찰은 발열량을 증가시키고 증가된 발열량은 카카스 단부까지 전달되어 카카스 단부의 세파레이션까지 일으킬 염려를 크게 한다.In heavy-duty trucks, a load of a load larger than the allowable load is loaded or the vehicle is operated in a poor road condition, so the stress on the tire is large. In an effort to endure such a large stress, a lot of efforts have been made to improve the tire structure in the related art. In particular, the stress of the tire is concentrated in the bead portion connecting the vehicle and the tire. The bead portion is wrapped in the bead bundle carcass to fill the bead filler on the top of the bead bundle does not create a space on the top of the bead bundle and is configured to firmly bind the bead bundle and carcass. By the way, the bead filler in a conventional tire absorbs the movement of the carcass end or the chaper and the combination of the lower filler and the carcass end or the chafer made of a rubber composition having rigid properties to prevent the bead bundles from moving. The upper filler is composed of a rubber composition having a soft physical property for cushioning, the lower filler has a substantially triangular shape, the inner side is in contact with the carcass and the outer side is in contact with the upper filler, as shown in the accompanying drawings In such a conventional tire, there is a possibility that air may enter due to poor adhesion between the lower filler and the carcass having a high hardness, and the frictional stress is large between the lower filler and the carcass, so the separation phenomenon between the carcass and the lower filler is increased. Friction between lower filler and carcass increases calorific value and increased calorific value It is transmitted to the part to increase the fear of causing separation of the carcass end.

이에 본 발명은 카카스와 하부필러 사이의 접착력을 향상시키고 공기의 틈입(闖入) 염려를 감소시키며, 카카스와 하부필러 사이의 마찰응력을 감소시키어 카카스와 하부필러 사이의 분리 현상을 방지시킬 뿐 아니라, 카카스와 하부필러 사이의 마찰로 인한 발열량을 감소시키어 카카스와 하부필러 사이의 마찰로 인한 열이 카카스 단부의 파열 원인을 제공하지 아니하게 하는 타이어를 제공하여야 한다는 과제를 해결하고자 한다.Accordingly, the present invention improves the adhesive force between the carcass and the lower filler and reduces the risk of air gap, and reduces the frictional stress between the carcass and the lower filler, thereby preventing the separation phenomenon between the carcass and the lower filler. The problem is to provide a tire that reduces the amount of heat generated by friction between the carcass and the lower filler so that heat caused by friction between the carcass and the lower filler does not provide a cause of rupture of the carcass end.

이와 같은 과제를 해결하기 위하여 본 발명은 카카스와 하부필러 사이에 완 충시트를 설치하여서 된 타이어를 제공한다. 또한 본 발명은 이에서 나아가, 카카스 단부와 내측 카카스 사이의 상부필러 두께를 증가시켜 카카스 단부의 움직임과 내측 카카스의 움직임 사이에 상응 간섭효과를 감소시킬 뿐 아니라 카카스 단부 움직임 방향을 내측카카스 방향이 아닌 적어도 내측 카카스와 평행인 방향으로 형성시켜서 된 타이어를 제공한다.In order to solve this problem, the present invention provides a tire by installing a cushioning sheet between the carcass and the lower filler. In addition, the present invention further increases the upper filler thickness between the carcass end and the inner carcass to reduce the corresponding interference effect between the movement of the carcass end and the movement of the inner carcass, as well as the direction of the carcass end movement. A tire formed by forming in a direction parallel to at least the inner carcass rather than the inner carcass direction is provided.

위와 같은 본 발명은, 카카스와 하부필러 사이의 접착 효과를 상승시키고 공기의 틈입 염려를 감소시킬 뿐 아니라 카카스와 하부필러 사이의 마찰응력을 감소시키어 카카스와 하부필러 사이의 분리 현상을 방지시킨다. 카카스와 하부필러 사이의 마찰 감소는 발열량을 감소시키어 카카스와 하부필러 사이의 마찰로 인한 열이 카카스 단부의 파열 원인을 제공하지 아니하게 하는 효과가 있으며, 또한, 본 발명은, 이에서 나아가, 카카스 단부와 내측 카카스 사이의 상부필러 두께를 증가시켜 카카스 단부의 움직임과 내측 카카스의 움직임 사이에 상응 간섭효과를 감소시킬 뿐 아니라 카카스 단부 움직임 방향을 내측카카스 방향이 아닌 적어도 내측 카카스와 평행인 방향이 되게 하여 카카스와 하부필러 사이의 마찰로 인한 열이 카카스 단부의 파열 원인을 제공하지 아니하게 하는 효과가 있다.The present invention as described above, to increase the adhesion effect between the carcass and the lower filler and to reduce the risk of air penetration, as well as to reduce the frictional stress between the carcass and the lower filler to prevent the separation phenomenon between the carcass and the lower filler. The reduction in friction between the carcass and the lower filler has the effect of reducing the calorific value such that the heat caused by the friction between the carcass and the lower filler does not provide a cause of rupture of the carcass end, and the present invention further provides Increasing the upper filler thickness between the carcass end and the inner carcass reduces the corresponding interference effect between the movement of the carcass end and the movement of the inner carcass, as well as the direction of the carcass end movement at least in the inner carcass direction rather than in the inner carcass direction. The effect is to be in a direction parallel to the carcass so that heat due to friction between the carcass and the lower filler does not provide a cause of rupture of the carcass end.

트레드와 트레드 양측의 사이드월 및 각 사이드월 단부의 비드부(1)로 구성 되고, 비드부(1)가, 비드번들(2)과, 비드번들(2) 상부의 비드필러, 및 비드번들(2)과 비드필러를 캄싸는 카카스(4)를 포함하고, 비드필러가 하부필러(31)와 상부필러(32)로 구성되는 것에 있어서, 본 발명은, 하부필러(31)와 카카스(4) 사이에 완충시트(5)를 설치하여서 된 타이어를 제공한다. 완충시트(5)는 0.4~1.2mm의 두께를 가지며 쇼어A경도가 83~90 인 고무조성물로 형성시키는 것이 바람직하다. The tread and the sidewalls on both sides of the tread and the bead portion 1 at each end of the sidewall, the bead portion 1 includes the bead bundle 2, the bead filler on the bead bundle 2, and the bead bundle ( 2) and the carcass 4 which encloses the bead filler, and when a bead filler consists of the lower filler 31 and the upper filler 32, this invention provides the lower filler 31 and the carcass ( 4) Provide a tire by installing a cushioning seat (5) between. The buffer sheet 5 is preferably formed of a rubber composition having a thickness of 0.4 to 1.2 mm and a Shore A hardness of 83 to 90.

또한, 본 발명은 이에서 나아가, 카카스(4) 단부(41)와 내측 카카스(4) 사이의 상부필러(32) 두께를 증가시켜 카카스 단부(41)의 움직임과 내측 카카스(4)의 움직임 사이에 상응 간섭효과를 감소시킬 뿐 아니라, 카카스 단부(41) 움직임 방향을 내측 카카스(4)로 향하는 방향이 아닌 적어도 내측 카카스(4)와 평행인 방향으로 되게 하는 타이어를 제공한다.In addition, the present invention further extends the thickness of the upper pillar 32 between the carcass 4 end 41 and the inner carcass 4 to move the carcass end 41 and the inner carcass 4. Tires that not only reduce the corresponding interference effect between the movements, but also cause the carcass end 41 movement direction to be at least parallel to the inner carcass 4 rather than to the inner carcass 4. to provide.

도1은 본 발명의 일 실시예의 요부 발췌 단면도   1 is a cross-sectional view of the main portion of an embodiment of the present invention

<도면의 주요 부분에 대한 부호의 설명>   <Explanation of symbols for the main parts of the drawings>

1. 비드부   1. Bead part

2. 비드번들   2. Bead Bundle

31. 하부필러   31. Lower filler

32. 상부필러   32. Upper filler

4. 카카스   4. Carcass

41. 단부    41.End

5. 완충시트    5. Buffer Sheet

Claims (3)

트레드와 트레드 양측의 사이드월 및 각 사이드월 단부의 비드부로 구성되고, 비드부가, 비드번들과, 비드번들 상부의 비드필러, 및 비드번들과 비드필러를 캄싸는 카카스를 포함하고, 비드필러가 하부필러와 상부필러로 구성되는 것에 있어서, 하부필러와 카카스 사이에 완충시트가 설치된 것을 특징으로 하는 비드부를 개량한 중하중 트럭용 타이어.The tread and sidewalls on both sides of the tread and the bead portions at each sidewall end, and the bead portion includes bead bundles, bead fillers above the bead bundles, and carcasses that cover the bead bundles and bead fillers. The heavy duty truck tire which improved the bead part which consists of a lower pillar and an upper pillar in which the buffer seat | seat was installed between the lower pillar and carcass. 제1항에 있어서, 완충시트는 0.4~1.2mm의 두께를 가지며 쇼어A경도가 83~90 인 고무조성물인 것을 특징으로 하는 비드부를 개량한 중하중 트럭용 타이어.The heavy duty truck tire as claimed in claim 1, wherein the cushioning sheet is a rubber composition having a thickness of 0.4 to 1.2 mm and a Shore A hardness of 83 to 90. 제1항 또는 제2항에 있어서, 비드번들과 비드필러를 감싸는 카카스는 카카스의 단부가 내측 카카스와 평행인 방향으로 설치된 것임을 특징으로 하는 비드부를 개량한 중하중 트럭용 타이어.The heavy duty truck tire of claim 1 or 2, wherein the carcass surrounding the bead bundle and the bead filler is installed in a direction in which the end of the carcass is parallel to the inner carcass.
KR1020080121070A 2008-12-02 2008-12-02 Tire for heavy truck improved bead member KR20100062429A (en)

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111823782A (en) * 2019-04-16 2020-10-27 韩国轮胎与科技株式会社 Pneumatic tire having bead apex with multiple rubber layers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111823782A (en) * 2019-04-16 2020-10-27 韩国轮胎与科技株式会社 Pneumatic tire having bead apex with multiple rubber layers

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