KR20110058927A - Tube-shaped insert rubber for run-flat tire - Google Patents

Tube-shaped insert rubber for run-flat tire Download PDF

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Publication number
KR20110058927A
KR20110058927A KR1020090115478A KR20090115478A KR20110058927A KR 20110058927 A KR20110058927 A KR 20110058927A KR 1020090115478 A KR1020090115478 A KR 1020090115478A KR 20090115478 A KR20090115478 A KR 20090115478A KR 20110058927 A KR20110058927 A KR 20110058927A
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KR
South Korea
Prior art keywords
tire
insert rubber
cavity
run
flat tire
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KR1020090115478A
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Korean (ko)
Inventor
박우철
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금호타이어 주식회사
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Priority to KR1020090115478A priority Critical patent/KR20110058927A/en
Publication of KR20110058927A publication Critical patent/KR20110058927A/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
    • 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
    • B60C17/00—Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor
    • B60C17/0009—Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor comprising sidewall rubber inserts, e.g. crescent shaped inserts
    • B60C17/0018—Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor comprising sidewall rubber inserts, e.g. crescent shaped inserts two or more inserts in each sidewall portion
    • 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
    • B60C17/00—Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor
    • B60C17/0009—Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor comprising sidewall rubber inserts, e.g. crescent shaped inserts
    • B60C17/0036—Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor comprising sidewall rubber inserts, e.g. crescent shaped inserts comprising additional reinforcements
    • 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
    • B60C17/00—Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor
    • B60C17/01—Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor utilising additional inflatable supports which become load-supporting in emergency
    • B60C17/02—Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor utilising additional inflatable supports which become load-supporting in emergency inflated or expanded in emergency only
    • 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
    • B60C5/00—Inflatable pneumatic tyres or inner tubes
    • B60C5/02—Inflatable pneumatic tyres or inner tubes having separate inflatable inserts, e.g. with inner tubes; Means for lubricating, venting, preventing relative movement between tyre and inner tube
    • B60C5/04—Shape or construction of inflatable inserts
    • B60C5/08—Shape or construction of inflatable inserts having reinforcing means
    • 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
    • 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
    • B60C17/00—Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor
    • B60C17/0009—Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor comprising sidewall rubber inserts, e.g. crescent shaped inserts
    • B60C2017/0054—Physical properties or dimensions of the inserts
    • B60C2017/0063—Modulus; Hardness; Loss modulus or "tangens delta"

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

Abstract

PURPOSE: A tube type insert rubber for a run flat tire is provided to secure reliable strength and reduced weight of a run flat tire and to increase the travel distance after puncture. CONSTITUTION: A tube type insert rubber for a run flat tire comprises a cavity(4) which is formed in an extension body and an extension opening(5) which is formed along the exterior of the extension body to form a duct from the cavity to the inside of a tire. The distance between both ends of the extension opening is set smaller than the maximum diameter of the cavity.

Description

런플랫 타이어용 튜브형 인서트러버{TUBE-SHAPED INSERT RUBBER FOR RUN-FLAT TIRE}TUBE-SHAPED INSERT RUBBER FOR RUN-FLAT TIRE}

본 발명은 런플랫 타이어에 내장되는 인서트러버에 관한 것으로, 사이드월 이면 내부에 장착되는 인서트러버를 튜브형으로 형성한 것에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an insert rubber embedded in a run flat tire, and more particularly to a tubular shape of an insert rubber mounted inside a rear surface of a sidewall.

런플랫 타이어는 타이어가 펑크되어도 차량의 조향과 주행에 큰 영향이 없도록 하여 주행안전성을 보장하는 높은 부가가치의 타이어이다.Run-flat tires are high value-added tires that guarantee driving safety by ensuring that even when the tires are punctured, they do not have a great influence on the steering and driving of the vehicle.

런플랫 타이어의 구조는 크게 두 종류로 구별되는데, 그 하나는 타이어의 사이드월 이면 내부에 인서트러버를 부착하여 사이드월의 굴신작용의 범위를 줄인 구조이고, 또하나는 휠의 외륜면에 돌출지지부를 장착하여 트레드가 함몰되지 않도록 내부로부터 지지하는 구조이다.There are two types of run flat tires, one of which is an insert rubber attached to the inside of the rear side of the tire to reduce the extent of stretching of the side wall, and the other of the support flat on the outer ring of the wheel. It is structured to support from the inside so as not to dent the tread.

그런데, 종래의 인서트러버의 경우 강도유지를 위해 그 두께를 두껍게 해야하므로 타이어 전체의 하중이 높아져 차량연비를 저하시키는 문제가 있었다.However, in the case of the conventional insert rubber, the thickness of the entire tire should be increased in order to maintain strength, thereby increasing the weight of the entire tire, thereby lowering vehicle fuel economy.

그리고, 돌출지지부의 경우에는 휠로부터 타이어 착탈시 돌출지지부가 타이어 비드부의 이동을 방해하여 그 작업이 불편하며, 구조에 따라서는 공명을 일으켜 차내로 전달되는 등 소음의 문제가 있다.In addition, in the case of the protrusion support, when the tire is detached from the wheel, the protrusion support interferes with the movement of the tire bead portion, and the work is inconvenient, and depending on the structure, there is a problem of noise such as resonance being transmitted to the vehicle.

이와 같은 문제점을 해결하기 위해 안출된 본 발명은, 인서트러버의 경량화를 통해 런플랫타이어를 장착한 차량의 연비저하를 최소로 하면서, 강도의 측면도 양립하여 그 기능성을 향상시킨 런플랫 타이어의 제공을 목적으로 한다. The present invention devised to solve such a problem is to provide a run-flat tire to minimize the fuel economy of the vehicle equipped with a run flat tire through the weight reduction of the insert rubber, while also improving the functionality of both of the strength aspects The purpose.

상기와 같은 목적을 달성하기 위해 본 발명은, 타이어 내부의 양측 사이드월의 이면을 따라 일체로 부착되는 인서트러버(insert rubber)로서, 상기 인서트러버의 연장몸체를 따라 내부에 형성된 공동(空洞)과, 상기 공동으로부터 타이어 내부로의 연결통로로서 상기 인서트러버의 연장몸체의 외면을 따라 형성된 연장개구(延長開口)로 이루어진다.In order to achieve the above object, the present invention is an insert rubber (integrated rubber) that is integrally attached along the rear surface of both side wall of the tire, the cavity (cavities) formed therein along the extension body of the insert rubber and And an extension opening formed along the outer surface of the extension body of the insert rubber as a connection passage from the cavity to the inside of the tire.

상기 연장개구의 벌어진 양측 단부 간 거리를 상기 공동의, 타이어 반경방향 단면 최대거리보다 작게 함으로써, 단면형상을 일측이 개방된 튜브형상으로 한다.The cross-sectional shape is made into the tube shape of which one side was opened by making the distance between the gap | opening both ends of the said extension opening smaller than the maximum distance of the tire radial cross section of the said cavity.

상기 연장개구의 벌어진 양측 단부에 각각, 타이어 반경방향으로 대향하는 대향부가 형성된다.Opposite portions facing each other in the radial direction of the tire are formed at the open ends of the extension openings, respectively.

상기 대향부 사이에 연속적인 연장 체크밸브가 구비되어 상기 공동을 타이어 내부로부터 폐쇄된다.A continuous extension check valve is provided between the opposing parts to close the cavity from the inside of the tire.

본 발명이 적용된 런플랫 타이어는 기존에 비해 하중이 절감되어 연비저하를 최소로 할 수 있으며, 그럼에도 불구하고 자체의 강도보강구조를 통해 타이어 펑크 후의 주행거리가 늘어나는 효과가 있으며, 종래에 비해 굴신저항이 저감됨으로써 승차감 및 조향성능의 저하도 최소로 할 수 있는 탁월한 효과가 있다.The run-flat tires to which the present invention is applied can reduce the fuel consumption by minimizing load reduction compared to the conventional ones. Nevertheless, it has the effect of increasing the mileage after the puncture of the tire through its strength reinforcing structure. By this reduction, there is an excellent effect of minimizing the deterioration of ride comfort and steering performance.

이하, 본 발명이 적용된 바람직한 실시예에 대해 상세히 설명한다.Hereinafter, a preferred embodiment to which the present invention is applied will be described in detail.

도 1은 본 발명이 바람직하게 적용된 실시예를 나타내는 부분사시도이고, 도 2는 도 1의 일점쇄선부분을 확대한 부분사시도이다.1 is a partial perspective view showing an embodiment to which the present invention is preferably applied, Figure 2 is an enlarged partial perspective view of the dashed line portion of FIG.

본 실시예의 런플랫 타이어(1)의 인서트러버(3)는 간단한 구조로서 높은 작용효과를 구현한다.The insert rubber 3 of the run flat tire 1 of the present embodiment has a simple structure and realizes a high effect.

상기 인서트러버(3)의 결합위치는 종래와 유사하게 타이어(1) 내부에서 사이드월(2)의 대향하는 이면에 각각 부착되는데, 인서트러버(3)를 타이어의 원주방향을 따라 연속되게 부착될 수 있고, 또는 복수의 부분으로 나누어 동일 간격으로 원주상에서 이격되어 배치될 수 있다. 이렇게 복수의 부분으로 나누면 런플랫 타이어의 경량화를 도모할 수 있다.The coupling position of the insert rubber (3) is attached to the opposite back surface of the side wall (2) inside the tire (1), similar to the conventional one, the insert rubber (3) to be continuously attached along the circumferential direction of the tire It may be divided into a plurality of parts or arranged spaced apart on the circumference at equal intervals. By dividing into plural parts in this way, the run flat tire can be reduced in weight.

한편, 상기 인서트러버(3)에는 그 내부에 원주방향으로의 연장방향에 따라 이어지는 공동(4)을 형성하고, 또한 상기 공동(4)과 타이어(1) 내부공간을 연결하는 연장개구(5)를 인서트러버(3)의 외부면 상에 연속적으로 형성하되, 바람직하게는 상술한 바와 같이 양 인서트러버(3)의 연장개구(5)가 서로 마주보고 대향되는 위치에 설치된다.On the other hand, the insert rubber (3) is formed in the cavity (4) extending in the circumferential direction extending therein, and the extension opening (5) connecting the cavity (4) and the internal space of the tire (1) Is formed continuously on the outer surface of the insert rubber (3), and preferably, as described above, the extension openings (5) of both insert rubbers (3) are installed at positions facing each other.

그리고, 상기 연장개구(5)의 개방끝단은, 타이어 반경방향의 내측에 연속형성되는 내대향부(6)와, 타이어 반경방향의 외측에 연속형성되는 외대향부(7)로 이 루어지며, 상기 내대향부(6)와 외대향부(7)의 각각은 타이어 반경방향에 대해 수직인 방향으로 면만남되도록 타이어 폭방향으로 일정 폭을 갖도록 형성된다.The open end of the extension opening 5 is composed of an inner facing portion 6 continuously formed inside the tire radial direction and an outer facing portion 7 continuously formed outside the tire radial direction. Each of the inner facing portion 6 and the outer facing portion 7 is formed to have a predetermined width in the tire width direction so that the surfaces meet in a direction perpendicular to the tire radial direction.

이로써 타이어(1)에 공기압이 충분할 때는 서로 이격되었다가, 타이어(1)가 펑크, 즉 공기압이 급격히 줄게 되면 타이어(1)가 회전해서 지면에 가까워진 부분의 상기 내대향부(6)와 외대향부(7)가 서로 맞닿아 인서트로버(3)로서의 굴신저항을 발생시켜, 차량의 주행 및 조향 상태를 지지하게 된다.As a result, when the tire 1 has sufficient air pressure, the tire 1 is spaced apart from each other, and when the tire 1 is punctured, that is, when the air pressure decreases rapidly, the inner facing part 6 and the outer facing part of the part where the tire 1 rotates closer to the ground are rotated. (7) abuts against each other to generate a bending resistance as the insert (3), thereby supporting the running and steering state of the vehicle.

그리고, 상기 두 대향부(6, 7)는 타이어(1)의 회전에 따라 맞닿음상태와 이격상태가 반복되고 이것이 쿠션으로 작용하여, 인서트로버(3)의 높은 굴신저항으로부터 비롯되어 저하된 승차감을 다소 해소할 수 있다.In addition, the two opposing parts 6 and 7 are repeatedly contacted and spaced with the rotation of the tire 1 and act as a cushion, resulting in a reduced ride quality resulting from the high bending resistance of the insert rotor 3. It can be somewhat resolved.

한편, 본 발명의 다른 실시예에서는 상기 내대향부(6)와 외대향부(7)의 사이에 끼워지는 형태로 연장 체크벨브(8)가 타이어 원주방향을 따라 설치되는데, 이에 따라 상기 공동(4)은 타이어 내부공간과는 격리된 폐쇄공간을 형성하게 된다. Meanwhile, in another embodiment of the present invention, an extension check valve 8 is installed along the circumferential direction of the tire so as to be fitted between the inner facing portion 6 and the outer facing portion 7. ) Forms a closed space isolated from the tire interior space.

그리고, 상기 연장 체크밸브(8)는 공동(4)으로 공기가 유입되기만 하고 공동(4)밖으로 공기가 유출되는 것을 방지하는 역할을 하는데, 타이어의 공기압 저하에 따라 상기 인서트러버(3)가 한정적이나마 굴신작용을 시작하게 되고 타이어(1)의 회전에 따라 주기적으로 상기 공동(4)에 부압이 발생할 때 상기 연장 체크밸브(8)를 통해 타이어(1)의 내부공기가 유입되어 갇혀지고, 이로써 굴신작용이 반복되어도 공동(4)에 부압이 발생치 않고, 상기 공동(4)의 내부압과 부압간의 평행이 이루어짐으로써 인서트러버(3)가 보강된다.In addition, the extension check valve 8 only serves to prevent air from flowing into the cavity 4 and outflow of the air out of the cavity 4, and the insert rubber 3 is limited according to a decrease in the air pressure of the tire. Inner flexion is started and when the negative pressure is periodically generated in the cavity 4 according to the rotation of the tire 1, the internal air of the tire 1 is introduced and trapped through the extension check valve 8. Even if the stretching operation is repeated, no negative pressure is generated in the cavity 4, and the insert rubber 3 is reinforced by the parallel between the internal pressure and the negative pressure of the cavity 4.

그리고, 상기 인서트러버(3)에 공기로 채워진 공동(4)이 결합됨으로써 공동 이 없는 종래의 인서트러버에 비해 굴신저항을 다소 부드럽게 하여 승차감 저하를 해소할 수 있다. In addition, by combining the cavity (4) filled with air to the insert rubber (3) compared to the conventional insert rubber without the cavity can be slightly softened the flexural resistance to eliminate the ride comfort.

도 1은 본 발명이 바람직하게 적용된 실시예를 나타내는 부분사시도이다.1 is a partial perspective view showing an embodiment to which the present invention is preferably applied.

도 2는 도 1의 일점쇄선부분을 확대한 부분사시도이다.FIG. 2 is a partial perspective view illustrating an enlarged one-dot chain line portion of FIG. 1.

Claims (4)

타이어 내부의 양측 사이드월의 이면을 따라 일체로 부착되는 인서트러버(insert rubber)로서,An insert rubber that is integrally attached along the rear surface of both sidewalls of a tire, 상기 인서트러버의 연장몸체를 따라 내부에 형성된 공동(空洞)과,A cavity formed therein along the extension body of the insert rubber, 상기 공동으로부터 타이어 내부로의 연결통로로서 상기 인서트러버의 연장몸체의 외면을 따라 형성된 연장개구(延長開口)로 이루어지는 것을 특징으로 하는 런플랫 타이어용 튜브형 인서트러버.A tubular insert rubber for a run flat tire, comprising: an extension opening formed along an outer surface of an extension body of the insert rubber as a connecting passage from the cavity to the inside of the tire. 제1항에 있어서,The method of claim 1, 상기 연장개구의 벌어진 양측 단부 간 거리를 상기 공동의, 타이어 반경방향 단면 최대거리보다 작게 함으로써, 단면형상을 일측이 개방된 튜브형상으로 한 것을 특징으로 하는 런플랫 타이어용 튜브형 인서트러버. A tubular insert rubber for run-flat tire, characterized in that the cross-sectional shape is formed into a tubular shape in which one side is opened by making the distance between the open both ends of the extension opening smaller than the maximum radial radial cross-section of the cavity. 제2항에 있어서,The method of claim 2, 상기 연장개구의 벌어진 양측 단부에 각각, 타이어 반경방향으로 대향하는 대향부가 형성된 것을 특징으로 하는 런플랫 타이어용 튜브형 인서트러버.Run-flat tire tubular insert rubber, characterized in that the opposite sides facing each other in the radial direction of the tire is formed at the open sides of the extension opening. 제2항 또는 제3항에 있어서,The method according to claim 2 or 3, 상기 대향부 사이에 연속적인 연장 체크밸브가 구비되어 상기 공동을 타이어 내부로부터 폐쇄된 것을 특징으로 하는 런플랫 타이어용 튜브형 인서트러버.A continuous extended check valve is provided between the opposing parts, and the cavity is closed from the inside of the tire.
KR1020090115478A 2009-11-27 2009-11-27 Tube-shaped insert rubber for run-flat tire KR20110058927A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220016930A1 (en) * 2018-11-30 2022-01-20 Bridgestone Corporation Multi air chamber tire

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220016930A1 (en) * 2018-11-30 2022-01-20 Bridgestone Corporation Multi air chamber tire
US11970030B2 (en) * 2018-11-30 2024-04-30 Bridgestone Corporation Multi air chamber tire

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