KR20050014578A - Pneumatic tire having a rim protector - Google Patents

Pneumatic tire having a rim protector

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Publication number
KR20050014578A
KR20050014578A KR1020030053245A KR20030053245A KR20050014578A KR 20050014578 A KR20050014578 A KR 20050014578A KR 1020030053245 A KR1020030053245 A KR 1020030053245A KR 20030053245 A KR20030053245 A KR 20030053245A KR 20050014578 A KR20050014578 A KR 20050014578A
Authority
KR
South Korea
Prior art keywords
rubber
hardness
rim
lymph
rotator
Prior art date
Application number
KR1020030053245A
Other languages
Korean (ko)
Other versions
KR100616456B1 (en
Inventor
김정남
Original Assignee
한국타이어 주식회사
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Application filed by 한국타이어 주식회사 filed Critical 한국타이어 주식회사
Priority to KR1020030053245A priority Critical patent/KR100616456B1/en
Publication of KR20050014578A publication Critical patent/KR20050014578A/en
Application granted granted Critical
Publication of KR100616456B1 publication Critical patent/KR100616456B1/en

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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
    • B60C13/00—Tyre sidewalls; Protecting, decorating, marking, or the like, thereof
    • B60C13/04—Tyre sidewalls; Protecting, decorating, marking, or the like, thereof having annular inlays or covers, e.g. white sidewalls
    • 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
    • B60C1/00—Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
    • B60C1/0025—Compositions of the sidewalls
    • 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
    • B60C13/00—Tyre sidewalls; Protecting, decorating, marking, or the like, thereof
    • B60C2013/005—Physical properties of the sidewall rubber
    • B60C2013/006—Modulus; Hardness; Loss modulus or "tangens delta"
    • 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
    • B60C13/00—Tyre sidewalls; Protecting, decorating, marking, or the like, thereof
    • B60C13/04—Tyre sidewalls; Protecting, decorating, marking, or the like, thereof having annular inlays or covers, e.g. white sidewalls
    • B60C2013/045—Tyre sidewalls; Protecting, decorating, marking, or the like, thereof having annular inlays or covers, e.g. white sidewalls comprising different sidewall rubber layers

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Tires In General (AREA)

Abstract

PURPOSE: A rim protector of a pneumatic tire is provided to secure unique function of the rim protector by preventing an outer portion of the rim protector from being deformed in contacting with an obstacle on the road and to protect firmly a bead unit and a rim flange. CONSTITUTION: A pneumatic tire is composed of a tread unit(1), a side wall unit(2), a bead unit(3) placed and installed on a rim, and a rim protector(4) formed on the outside of the bead unit. The rim protector is made from at least two kinds of rubber compositions. The hardness of rubber forming an inner portion(41) of the rim protector is made from rubber composition lower than the rubber hardness of the side wall unit. The hardness of rubber forming an outer portion(42) of the rim protector is made from rubber composition higher than the rubber hardness of a rim cushion(35).

Description

공기입 타이어의 림프로텍터{Pneumatic tire having a rim protector}Pneumatic tire having a rim protector

본 발명은 공기입 타이어의 림프로텍더에 관한 것으로, 더욱 상세하게는 림프로텍터의 구조를 개선하여 비드부와 림을 보다 확고하게 보호할 수 있게 하는 동시에 림프로텍터의 설치로 인하여 소음이 증가되는 것과, 승차감이 저하되는 것을 방지할 수 있게 하는 공기입 타이어의 림 프로텍터에 관한 것이다.The present invention relates to a lymph rotator of a pneumatic tire, and more particularly, to improve the structure of the lymph rotator to more securely protect the bead portion and the rim and to increase the noise due to the installation of the lymph rotator. The present invention relates to a rim protector of a pneumatic tire, which makes it possible to prevent deterioration of ride comfort.

최근 타이어의 폭이 광폭화되고, 림의 소재가 경량, 고급화되는 추세로 스틸에서 알루미늄으로 바뀌고 있어 비드부의 외측면과 림플랜지부가 도로상의 장애물, 구체적으로는 도로의 경계석과 접촉되어 파손되는 빈도수가 증가되고 있다.In recent years, the width of tires has become wider, and the material of rims has been changed from steel to aluminum in light weight and quality. As the outside surface of the bead and the rim flange part are in contact with road obstacles, specifically, the boundary stone of the road, the frequency of damage is increased. It is becoming.

또한 타이어 광폭화로 접지면이 넓어지고, 이에 상응하여 비드부에 전가되는 하중이 증가되어 비드부의 파손의 문제점이 지적되고 있다.In addition, due to wide tires, the ground plane is widened, and correspondingly, the load applied to the bead portion is increased, which indicates a problem of breakage of the bead portion.

이와 같이, 비드 외측면과 림플랜지부의 파손을 방지하기 위하여 비드부의 외측(도로상의 장애물과 빈번히 접촉되는 부위)에 타이어의 외측면으로부터 돌출되는 림프로텍터를 형성시켜 비드부와 림플랜지부가 장애물과 접촉되어 파손되는 것을 방지할 수 있게 하였다.In this way, in order to prevent the bead outer surface and the rim flange portion from being damaged, a lymph rotator protruding from the outer surface of the tire is formed on the outer side of the bead portion (a portion frequently in contact with an obstacle on the road), so that the bead portion and the rim flange portion are separated from the obstacle. It is possible to prevent contact and breakage.

첨부된 도면 도 1 은 종래의 림프로텍터의 일 실시 예를 발췌 도시한 단면도이고, 도 2 는 종래의 또 다른 실시 예를 발췌 도시한 단면도이다.1 is a cross-sectional view showing an example of a conventional lymph rotator, Figure 2 is a cross-sectional view showing another conventional embodiment.

도 1 은 사이드월부(2)의 고무를 연장 돌출시켜 림프로텍터(4)를 형성시킨 경우이고, 도 2 는 림쿠션(35) 고무의 상단을 연장시켜 림프로텍터(4)의내측부분(41)을 형성시키고, 사이드월부(2)의 하단을 연장시켜 림프로텍터(4)의 외측부분(42)을 형성시킨 것이다.FIG. 1 illustrates a case in which the rubber of the sidewall part 2 is extended to form a lymph locator 4, and FIG. 2 illustrates an inner portion 41 of the lymph locator 4 by extending an upper end of the rim cushion 35 rubber. The lower end of the side wall portion 2 is formed to form the outer portion 42 of the lymph rotator 4.

도 1 에 도시된 실시 예는 림프로텍터가 1종의 고무조성물 즉, 사이드월부(2)의 고무조성물과 동일한 물성의 고무조성물로만 형성되는 것이다.In the embodiment shown in FIG. 1, the lympho-rotator is formed of only one rubber composition, that is, a rubber composition having the same physical properties as the rubber composition of the side wall part 2.

사이드월부(2)를 구성하는 고무조성물은 사이드월부의 특성상 경도가 낮은 고무조성물로 형성되기 때문에 림프로텍터(4)가 사이드월부(2)와 동일한 고무조성물로 형성되는 경우 장애물과의 접촉시 쉽게 변형되어 림프로텍터(4)로서의 기능을 충분하게 발휘하지 못하는 문제점이 있다.Since the rubber composition constituting the side wall portion 2 is formed of a rubber composition having low hardness due to the characteristics of the side wall portion, when the lymphophore 4 is formed of the same rubber composition as the side wall portion 2, it is easily deformed upon contact with an obstacle. There is a problem in that the function as the lymphoprotector 4 is not sufficiently exhibited.

도 2 에 도시된 실시 예는 림프로텍터(4)가 2종의 고무조성물로 형성되는 것으로, 림프로텍터(4)의 내측부분(41)은 경도가 높은 림쿠션(35)고무로 형성되고, 림프로텍터(4)의 외측부분은 경도가 낮은 사이드월부(2)의 고무로 형성되는 것이다.In the embodiment shown in Figure 2, the lymph rotator (4) is formed of two rubber compositions, the inner portion 41 of the lymph rotator (4) is formed of a rubber rim cushion 35 of high hardness, The outer part of the protector 4 is formed of the rubber of the sidewall part 2 with low hardness.

그러나 이와 같은 림프로텍터(4)의 전체 강성은 도 1의 실시 예 보다는 증가될 수 있으나, 림프로텍터(4)의 내측부분(41)이 강성이 강한 림쿠션(35)고무로 형성됨에 따라 타이어의 수직강성이 증가되면서 승차감과 소음성능이 저하되는 문제점이 있는 것이다.However, the overall stiffness of the lymph rotator 4 may be increased than in the embodiment of FIG. 1, but as the inner portion 41 of the lymph rotator 4 is formed of a stiff rim cushion 35 rubber, As the vertical stiffness increases, there is a problem in that the riding comfort and noise performance are degraded.

본 발명은 상기와 같은 종래의 문제점을 해결하기 위한 것으로서, 본 발명은 림프로텍터를 2종이상의 고무조성물로 형성시켜 림프로텍터바의 기능을 충실하게수행할 수 있게 하는 동시에 승차감과 소음성능이 저하되는 것을 방지할 수 있게 하는 공기입 타이어의 림프로텍터를 제공함에 그 목적이 있다.The present invention is to solve the conventional problems as described above, the present invention is to form a lymph rotator of two or more rubber composition to perform faithfully the function of the lymph rotator bar at the same time the ride comfort and noise performance is reduced It is an object of the present invention to provide a lymphoprotector of a pneumatic tire, which makes it possible to prevent it.

본 발명은 상기와 같은 목적을 달성하기 위하여 다음과 같이 구성된다. 즉, 본 발명은 트레드부 및 사이드월과, 림에 안착 설치되는 비드부로 구성되고, 상기 비드부의 외측면에 림프로텍터가 형성되는 공기입 래디알 타이어에 있어서, 상기 림프로텍터를 적어도 2종이상의 고무조성물로 형성시키되, 림프로텍터의 내측부분을 형성하는 고무의 경도를 사이드월부의 고무경도 보다 낮은 고무조성물로 형성시키고, 림프로텍터의 외측부분을 형성하는 고무의 경도를 림쿠션의 고무경도 보다 높은 고무조성물로 형성시켜 구성되는 것에 특징을 둔 것이다.The present invention is configured as follows to achieve the above object. That is, the present invention comprises a tread portion, a sidewall, and a bead portion seated on a rim, wherein in the pneumatic radial tire in which a lymph rotator is formed on the outer surface of the bead portion, the lymph rotator is at least two rubbers. It is formed of a composition, the hardness of the rubber forming the inner portion of the lymphoprotector is formed of a rubber composition lower than the rubber hardness of the side wall portion, the hardness of the rubber forming the outer portion of the lymphoprotector rubber of the rubber hardness of the rim cushion It is characterized by being formed into a composition.

도 1 은 종래의 림프로텍터의 일 실시 예를 발췌 도시한 단면도1 is a cross-sectional view showing an embodiment of a conventional lymphoprotector

도 2 는 종래의 또 다른 실시 예를 발췌 도시한 단면도Figure 2 is a cross-sectional view showing another conventional embodiment

도 3 은 본 발명에 따른 림프로텍터의 일 실시 예를 발췌 도시한 단면도Figure 3 is a cross-sectional view showing an embodiment of a lymphoprotector according to the present invention

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

1. 트래드 2. 사이드월1. Tread 2. Sidewall

3. 비드부 4. 프로텍터3. Bead part 4. Protector

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 림프로텍터의 일 실시 예를 발췌 도시한 단면도이다.3 is a cross-sectional view illustrating an embodiment of a lymphoprotector according to the present invention.

도 3 에 도시되는 바와 같이, 본 발명은 트레드부(1) 및 사이드월부(2)와, 림(5)에 안착 설치되는 비드부(3)로 구성되고, 상기 비드부(3)의 외측면에 림프로텍터(4)가 형성되는 공기입 래디알 타이어에 있어서, 상기 림프로텍터(4)를 적어도 2종이상의 고무조성물로 형성시키되, 림프로텍터(4)의 내측부분(41)을 형성하는 고무의 경도를 사이드월부(2)의 고무경도 보다 낮은 고무조성물로 형성시키고, 림프로텍터(4)의 외측부분(42)을 형성하는 고무의 경도를 림쿠션(35)의 고무경도 보다 높은 고무조성물로 형성시켜 구성되는 것으로, 림프로텍터(4)의 내측부분(41)의 하드네스 경도는 대략 30∼60의 범위내에서 형성시키고, 림프로텍터(4)의 외측부분(42)의 하드네스 경도는 대략 60∼100의 범위내에서 형성시켜 구성되는 것이다.As shown in FIG. 3, the present invention comprises a tread portion 1 and a side wall portion 2, and a bead portion 3 mounted on the rim 5, and an outer surface of the bead portion 3. In a pneumatic radial tire in which a lymph rotator (4) is formed, the lymph rotator (4) is formed of at least two rubber compositions, and the rubber forming the inner portion (41) of the lymph rotator (4). The hardness is formed of a rubber composition lower than the rubber hardness of the side wall portion 2, and the hardness of the rubber forming the outer portion 42 of the lymphoprotector 4 is formed of a rubber composition higher than the rubber hardness of the rim cushion 35. The hardness hardness of the inner portion 41 of the lymphoprotector 4 is formed in the range of approximately 30 to 60, and the hardness hardness of the outer portion 42 of the lymphoprotector 4 is approximately 60. It is formed by forming in the range of -100.

이와 같이 구성되는 본 발명은 승차감과 소음성능에 많은 영향을 미치는 림프로텍터(4)의 내측부분(41)은 사이드월부(2)의 고무 경도가 낮은 고무로 형성됨으로써 승차감과 소음성능이 저하되는 것을 방지할 수 있는 것이다.According to the present invention configured as described above, the inner portion 41 of the lymph rotator 4 having a great influence on the riding comfort and noise performance is formed of rubber having a low rubber hardness of the side wall portion 2, thereby reducing the riding comfort and noise performance. It can be prevented.

그리고 도로의 장애물과 직접적으로 접촉되는 림프로텍터(4)의 외측부분(42)은 림쿠션(35)의 고무 경도 보다 높은 고무로 형성됨으로써 장애물과의 접촉시 쉽게 변형되지 않아 림프로텍터(4)의 본래 기능을 충실하게 발휘하여 비드부와 림플랜지를 확고하게 보호할 수 있는 것이다.In addition, the outer portion 42 of the lymph rotator 4 which is in direct contact with the obstacle of the road is formed of rubber higher than the rubber hardness of the rim cushion 35, so that it is not easily deformed upon contact with the obstacle so that the lymph rotator 4 is Its original function is faithful to protect the bead and the rim flange.

본 발명은 전술한 실시 예에 한정되지 않고 본 발명의 기술사상이 허용하는 범위 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 allowed by the technical idea of the present invention.

이상에서와 같이 본 발명에 따르면 림프로텍터를 2종이상의 고무조성물로 형성시켜 림프로텍터바의 기능을 충실하게 수행할 수 있게 하는 동시에 승차감과 소음성능이 저하되는 것을 방지할 수 있는 효과가 있다.As described above, according to the present invention, the lymphoprotector is formed of two or more kinds of rubber compositions, thereby making it possible to faithfully perform the function of the lymphoprotector bar, and at the same time, the riding comfort and noise performance can be prevented from being lowered.

Claims (2)

트레드부(1) 및 사이드월부(2)와, 림(5)에 안착 설치되는 비드부(3)로 구성되고, 상기 비드부(3)의 외측면에 림프로텍터(4)가 형성되는 공기입 래디알 타이어에 있어서, 상기 림프로텍터(4)를 적어도 2종이상의 고무조성물로 형성시키되, 림프로텍터(4)의 내측부분(41)을 형성하는 고무의 경도를 사이드월부(2)의 고무경도 보다 낮은 고무조성물로 형성시키고, 림프로텍터(4)의 외측부분(42)을 형성하는 고무의 경도를 림쿠션(35)의 고무경도 보다 높은 고무조성물로 형성시켜 구성되는 것을 특징으로 하는 공기입 타이어의 림프로텍터.A pneumatic inlet comprising a tread portion (1) and a sidewall portion (2), and a bead portion (3) seated on the rim (5), and the lymph locator (4) being formed on the outer surface of the bead portion (3). In the radial tire, the lymph rotator 4 is formed of at least two rubber compositions, and the hardness of the rubber forming the inner part 41 of the lymph rotator 4 is greater than that of the side wall 2. The pneumatic tire, characterized in that formed by a low rubber composition, and the hardness of the rubber forming the outer portion 42 of the lymph rotator (4) to a rubber composition higher than the rubber hardness of the rim cushion (35) Lymphocyte protector. 제 1항에 있어서, 림프로텍터(4)의 내측부분(41)의 하드네스 경도는 대략 30∼60의 범위내에서 형성시키고, 림프로텍터(4)의 외측부분(42)의 하드네스 경도는 대략 60∼100의 범위내에서 형성시켜 구성되는 것을 특징으로 하는 공기입 타이어의 림프로텍터.2. The hardness hardness of the inner portion 41 of the lymphophore 4 is formed in the range of about 30 to 60, and the hardness hardness of the outer portion 42 of the lymphoprotector 4 is approximately. A lymph rotator for a pneumatic tire, characterized by being formed within the range of 60 to 100.
KR1020030053245A 2003-07-31 2003-07-31 Pneumatic tire having a rim protector KR100616456B1 (en)

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KR100766530B1 (en) * 2006-09-06 2007-10-15 한국타이어 주식회사 Pneumatic vehicle tire

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KR101871301B1 (en) 2016-12-16 2018-06-26 넥센타이어 주식회사 Pneumatic tire having rim protector

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JPS5770707A (en) * 1980-10-16 1982-05-01 Bridgestone Corp Pneumatic radial tire
JPH0692113A (en) * 1992-09-14 1994-04-05 Yokohama Rubber Co Ltd:The Flat pneumatic radial tire for passenger car
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