JP2002029228A - Run-flat tire - Google Patents
Run-flat tireInfo
- Publication number
- JP2002029228A JP2002029228A JP2000213898A JP2000213898A JP2002029228A JP 2002029228 A JP2002029228 A JP 2002029228A JP 2000213898 A JP2000213898 A JP 2000213898A JP 2000213898 A JP2000213898 A JP 2000213898A JP 2002029228 A JP2002029228 A JP 2002029228A
- Authority
- JP
- Japan
- Prior art keywords
- tire
- run
- flat tire
- rim
- reinforcing layer
- Prior art date
- Legal status (The legal status 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 status listed.)
- Withdrawn
Links
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
- B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
- B60C23/001—Devices for manually or automatically controlling or distributing tyre pressure whilst the vehicle is moving
- B60C23/004—Devices for manually or automatically controlling or distributing tyre pressure whilst the vehicle is moving the control being done on the wheel, e.g. using a wheel-mounted reservoir
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tires In General (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、走行中にパンクし
た場合にそのまま相当距離を走行可能とするランフラッ
トタイヤに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a run flat tire that can travel for a considerable distance when a puncture occurs during traveling.
【０００２】[0002]
【従来の技術】ランフラットタイヤは、パンク等により
空気圧が失われた場合にもそのまま継続して相当距離を
走行することを可能としたものである。その例として、
サイドウォール部の内側を硬質のゴム層により補強し、
パンクして空気が抜けたときに車両の重量を剛性を高め
たサイドウォール部にて支持する構造等のものが知られ
ている。特開２０００−４３５２０号の公開特許公報に
は、サイドウォール部の内面にサイド補強層を設けたタ
イヤと、このタイヤをリム組したリムとで形成される空
洞部に独立気泡の弾性発泡体を充填した構造の安全タイ
ヤが開示されている。また、特開２０００−８５３２４
号の公開特許公報には、ラジアル構造のカーカスをイン
ナープライとアウタープライとし、サイドウォールを補
強する補強ゴム層を内側、中間及び外側に配置する等に
よりパンク状態におけるたわみに対する剛性を高めた構
造とされている。2. Description of the Related Art A run-flat tire is capable of continuously traveling a considerable distance even when air pressure is lost due to a puncture or the like. As an example,
Reinforce the inside of the sidewall with a hard rubber layer,
There is known a structure in which the weight of a vehicle is supported by a sidewall portion having increased rigidity when air is released due to puncturing. Japanese Patent Application Laid-Open No. 2000-43520 discloses a closed cell elastic foam in a cavity formed by a tire having a side reinforcing layer provided on an inner surface of a sidewall portion and a rim obtained by assembling the tire. A safety tire having a filled structure is disclosed. Also, JP-A-2000-85324
In the published patent publication of No. 2, a structure in which the rigidity against deflection in a punctured state is increased by, for example, arranging a radially structured carcass as an inner ply and an outer ply, and arranging a reinforcing rubber layer for reinforcing the sidewalls inside, middle and outside. Have been.
【０００３】[0003]
【発明が解決しようとする課題】上記した前者公報に記
載の安全タイヤは、パンクして空気が抜けたときに独立
気泡中の高圧空気が膨張してタイヤ内に広がることによ
り車両の重量をサイド補強層と共同して受けるようにさ
れている。そして、安全タイヤのパンク修理をする際に
は再び弾性発泡体が充填されるのであろうが、その弾性
発泡体は決して安価なものとは言いがたく、どこの修理
店にても特殊な弾性発泡体を常備することは難しいこと
から利便性に欠けるのではないかと思われる。In the safety tire described in the above-mentioned publication, when the air is punctured and the air is released, the high-pressure air in the closed cells expands and spreads in the tire, thereby reducing the weight of the vehicle. It is designed to be received in cooperation with a reinforcing layer. Then, when repairing a puncture of a safety tire, the elastic foam will be filled again, but it is hard to say that the elastic foam is cheap, and any repair shop has a special elastic foam. It is considered that it is difficult to always provide a foam, so that it may lack convenience.
【０００４】この発明の目的は、パンク走行時の安全性
と利便性を向上させたランフラットタイヤを提供するこ
とにある。[0004] It is an object of the present invention to provide a run flat tire with improved safety and convenience during puncture running.
【０００５】[0005]
【課題を解決するための手段】前記目的を達成するため
に請求項１に記載の発明は、トレッド部からサイドウォ
ール部を通ってビード部のビードコアの回りを内側から
外側に折り返すようにカーカスが配置されると共に、該
サイドウォール部の内面に補強層を一体に形成したラン
フラットタイヤであって、該補強層はタイヤの回転方向
に直交する断面をほぼ眉形形状とされ、その一方端をビ
ードフィラー部に重ね合わせ、他端を前記トレッド部と
反対側の内面に重ね合わせるように設けられ、さらに厚
さ方向に多数のスリットを形成することによりタイヤの
円周方向に連続する多数の環状突部が設けられているこ
とを特徴とする。In order to achieve the above object, according to the first aspect of the present invention, a carcass is formed so that a carcass is turned from the inside to the outside around a bead core of a bead portion through a sidewall portion from a tread portion. A run-flat tire in which a reinforcing layer is integrally formed on the inner surface of the sidewall portion while being disposed, wherein the reinforcing layer has a cross section orthogonal to the tire rotation direction having a substantially eyebrow shape, and one end thereof is formed. A number of annular portions are provided so as to overlap with the bead filler portion and to overlap the other end with the inner surface on the side opposite to the tread portion, and further continue in the circumferential direction of the tire by forming a number of slits in the thickness direction. It is characterized in that a projection is provided.
【０００６】同様の目的を達成するために請求項２に記
載の発明は、リム本体の幅方向の中央に形成された凹部
の外周部に隔壁を周設して内部を気密に保持された高圧
室を設け若しくはリム本体に高圧タンクを付設し、タイ
ヤ内の空気圧が所定圧力に低下したときに開放作動して
その高圧室若しくは高圧タンクに充填された補充用ガス
を該タイヤ内に流出させる圧力制御弁を設けると共に、
該補充用ガスを注入するガス注入弁とタイヤ内に空気を
注入する空気注入弁とを備えたリムに、トレッド部から
サイドウォール部を通ってビード部のビードコアの回り
を内側から外側に折り返すようにカーカスが配置される
と共に、該サイドウォール部の内面に補強層を一体に形
成し、該補強層はタイヤの回転方向に直交する断面をほ
ぼ眉形形状とされ、その一方端をビードフィラー部に重
ね合わせ、他端を前記トレッド部と反対側の内面に重ね
合わせるように設けられ、さらに厚さ方向に多数のスリ
ットを形成することによりタイヤの円周方向に連続する
多数の環状突部が設けられたランフラットタイヤを装着
したことを特徴とするものである。In order to achieve the same object, a second aspect of the present invention is to provide a high-pressure apparatus in which a partition is provided around an outer peripheral portion of a concave portion formed at the center in the width direction of a rim main body so that the inside is kept airtight. A pressure is provided to provide a chamber or a high-pressure tank on the rim main body, and to open when the air pressure in the tire drops to a predetermined pressure to cause the replenishment gas filled in the high-pressure chamber or high-pressure tank to flow into the tire. In addition to providing a control valve,
A rim provided with a gas injection valve for injecting the supplementary gas and an air injection valve for injecting air into the tire is formed so that a bead core of the bead portion is turned from the inside to the outside around the bead core from the tread portion through the sidewall portion. And a reinforcing layer is integrally formed on the inner surface of the sidewall portion, and the reinforcing layer has a cross section perpendicular to the tire rotation direction having a substantially eyebrow shape, and one end of the reinforcing layer is a bead filler portion. Is provided so as to overlap the other end on the inner surface on the side opposite to the tread portion, and furthermore, by forming a number of slits in the thickness direction, a number of annular projections continuous in the circumferential direction of the tire are provided. The run-flat tire provided is mounted.
【０００７】[0007]
【発明の作用及び効果】（請求項１の発明）ランフラッ
トタイヤに規定圧程度の圧力の空気が充填されている場
合には、サイドウォール部の補強層の環状突部間に適宜
な間隙を生じ、サイドウォール部は、車両の重量や路面
からの反発力によって自由に変形が可能であるため、従
来の一般的なタイヤと同様の乗り心地が得られる。In the case where the run flat tire is filled with air having a pressure of about a specified pressure, an appropriate gap is formed between the annular protrusions of the reinforcing layer on the side wall portion. As a result, the sidewall portion can be freely deformed by the weight of the vehicle or the repulsive force from the road surface, so that the same riding comfort as that of a conventional general tire can be obtained.
【０００８】パンクしたときにはランフラットタイヤ内
の空気が抜けてトレッド部はへこみ、サイドウォール部
は少し変形する。このとき、サイドウォール部の補強層
の環状突部同士が密着してアーチ構造となり、車両の重
量による圧縮や曲げ等による応力に対抗するように機能
する。しかして、ランフラットタイヤはそれ以上の変形
を抑制されるので、そのまま相当距離を安全に走行する
ことが可能となる。When puncturing occurs, the air in the run flat tire escapes, the tread portion is dented, and the sidewall portion is slightly deformed. At this time, the annular protrusions of the reinforcing layer of the side wall portion are closely attached to each other to form an arch structure, and function to resist stress due to compression or bending due to the weight of the vehicle. Thus, since the run-flat tire is restrained from further deformation, it is possible to safely travel a considerable distance as it is.
【０００９】（請求項２の発明）パンクして空気圧が所
定圧力まで低下したときには、圧力制御弁が開放作動し
て補充用ガスが高圧室（若しくは高圧タンク）からラン
フラットタイヤ内に直ちに流出する。そして、車両の重
量は、タイヤ内に供給されるガス圧とサイドウォール部
の補強層とにより共同して支持される。そのため、ラン
フラットタイヤは空気圧の低下により少し偏平に変形す
るが、それ以上の変形を抑制されてそのまま相当距離を
安全に走行することが可能となる。When the air pressure drops to a predetermined pressure due to puncturing, the pressure control valve is opened and the supplementary gas immediately flows out of the high-pressure chamber (or high-pressure tank) into the run flat tire. . The weight of the vehicle is supported jointly by the gas pressure supplied into the tire and the reinforcing layer of the sidewall portion. For this reason, the run flat tire is slightly flattened due to a decrease in air pressure, but further deformation is suppressed, and it is possible to safely travel a considerable distance as it is.
【００１０】このランフラットタイヤは、サイドウォー
ル部の補強層又は高圧室（若しくは高圧タンク）からタ
イヤ内に流出するガス圧とサイドウォール部の補強層と
の相乗作用により、パンク時のサイドウォール部の変形
を可及的に抑制することができるため、走行時の安全性
と利便性の向上に寄与するものである。The run-flat tire has a synergistic effect between the gas pressure flowing into the tire from the reinforcing layer on the sidewall portion or the high-pressure chamber (or the high-pressure tank) and the reinforcing layer on the sidewall portion. Since deformation of the vehicle can be suppressed as much as possible, it contributes to improvement in safety and convenience during traveling.
【００１１】[0011]
【発明の実施の形態】以下に、本発明の実施の形態例を
図面に基づいて説明する。図１はランフラットタイヤを
通常のリムに装着した状態を示す右半分の断面図、図２
は図１のランフラットタイヤのパンク時の状態を示す説
明図、図３はパンク時の補充用ガスを充填する高圧室を
備えたリムにランフラットタイヤを装着した状態の断面
図、図４はリムの一部の断面図である。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a right half sectional view showing a state in which a run flat tire is mounted on a normal rim, and FIG.
FIG. 3 is an explanatory view showing a punctured state of the run flat tire of FIG. 1, FIG. 3 is a cross-sectional view of a state where the run flat tire is mounted on a rim having a high-pressure chamber for filling a supplementary gas at the time of puncturing, and FIG. It is a sectional view of a part of rim.
【００１２】図１において、１はチューブレス式のラン
フラットタイヤである。このランフラットタイヤ１は、
トレッド部２からサイドウォール部３を通ってリム２０
に嵌着されるビード部４のビードコア５の回りを内側か
ら外側に折り返すようにカーカス６が配置されると共
に、そのサイドウォール部３の内面に補強層１０を一体
に形成している。In FIG. 1, reference numeral 1 denotes a tubeless run flat tire. This run flat tire 1
Rim 20 from tread 2 through sidewall 3
The carcass 6 is disposed so as to bend from the inside to the outside around the bead core 5 of the bead portion 4 fitted to the bead portion 4, and the reinforcing layer 10 is integrally formed on the inner surface of the sidewall portion 3.
【００１３】なお、上記トレッド部２の内方部分につい
ては、図示しないベルト層をカーカス６の外側に重ねる
ように配置して、さらに強度・剛性を高める構成にする
こともできる。In addition, a belt layer (not shown) may be disposed on the inner side of the tread portion 2 so as to overlap the outside of the carcass 6 to further increase the strength and rigidity.
【００１４】前記サイドウォール部３の補強層１０は、
図１に示すように、タイヤの回転方向に直交する断面を
ほぼ眉形形状とされ、その一方端１０ａをビードフィラ
ー部４ａに重ね合わせ、他端１０ｂを前記トレッド部２
と反対側の内面７に重ね合わせるように設けられてい
る。そして、この補強層１０には、厚さ方向（タイヤの
半径方向）に多数のスリット１１を形成してタイヤの円
周方向に連続する多数の環状突部１２を設ける。それら
の環状突部１２の断面形状は、サイドウォール部３に連
接される部分の幅を大きくして自由端部分の幅を小さく
した台形形状とされている。The reinforcing layer 10 of the side wall portion 3
As shown in FIG. 1, the cross section orthogonal to the rotation direction of the tire has a substantially eyebrow shape, and one end 10a is overlapped with the bead filler portion 4a, and the other end 10b is connected to the tread portion 2a.
It is provided so as to overlap with the inner surface 7 on the opposite side. In the reinforcing layer 10, a number of slits 11 are formed in the thickness direction (radial direction of the tire), and a number of annular protrusions 12 continuous in the circumferential direction of the tire are provided. The cross-sectional shape of the annular protrusions 12 is a trapezoidal shape in which the width of the portion connected to the sidewall portion 3 is increased and the width of the free end portion is reduced.
【００１５】かかる構成になるランフラットタイヤ１の
パンク時の作用については、The puncture action of the run flat tire 1 having such a configuration will be described below.
【発明の作用及び効果】の項で述べた内容と重複する
が、簡単に説明する。パンクしたときにはランフラット
タイヤ１内の空気が抜けてトレッド部２はへこみ、サイ
ドウォール部３は少し変形する。このときには、図２に
示すように、サイドウォール部３の補強層１０の環状突
部１２同士が密着してアーチ構造となり、車両の重量に
よる圧縮や曲げ等による応力に対抗するように機能す
る。そのため、ランフラットタイヤ１はそれ以上の変形
を抑制されてそのまま相当距離を安全に走行することが
可能となる。Although the contents are the same as those described in the section of the present invention, they will be briefly described. When punctured, the air in the run flat tire 1 escapes, the tread portion 2 is dented, and the sidewall portion 3 is slightly deformed. At this time, as shown in FIG. 2, the annular protrusions 12 of the reinforcing layer 10 of the sidewall portion 3 are in close contact with each other to form an arch structure, and function to resist stress due to compression or bending due to the weight of the vehicle. For this reason, the run-flat tire 1 is able to safely travel a considerable distance as it is without further deformation.
【００１６】次に、上記ランフラットタイヤ１をパンク
時の補充用ガスを充填する高圧室を備えたリム３０に装
着したリム付ランフラットタイヤについて述べる。図３
に示すように、リム３０には、リム本体３１の幅方向の
中央に形成された凹部３２の外周部に隔壁３３を周設し
て内部を気密に保持される高圧室３４が設けられてい
る。３５はその隔壁３３に取り付けた圧力制御弁であ
り、この圧力制御弁３５はタイヤ内の空気圧が所定圧力
に低下したときに開放作動して、高圧室３４に充填され
た補充用ガスを該タイヤ内に供給するように設けられて
いる。３６は前記隔壁３３を窪ませた位置の外周縁部３
２ａに取り付けられたタイヤ内に空気を注入するための
空気注入弁、３７は前記凹部３２の外周縁部３２ａに取
り付けられた高圧室３４に補充用ガスを注入するための
ガス注入弁である。Next, a description will be given of a run-flat tire with a rim mounted on the rim 30 having a high-pressure chamber for filling the run-flat tire 1 with a supplementary gas at the time of puncturing. FIG.
As shown in FIG. 5, the rim 30 is provided with a high-pressure chamber 34 in which a partition wall 33 is provided around an outer peripheral portion of a concave portion 32 formed at the center in the width direction of the rim main body 31 so that the inside is kept airtight. . Reference numeral 35 denotes a pressure control valve attached to the partition wall 33. The pressure control valve 35 is opened when the air pressure in the tire drops to a predetermined pressure, and the replenishment gas filled in the high-pressure chamber 34 is supplied to the tire. It is provided so that it may be supplied inside. 36 is an outer peripheral edge portion 3 at a position where the partition wall 33 is depressed.
An air injection valve 37 for injecting air into the tire 2a is mounted on the outer peripheral edge 32a of the recess 32, and a gas injection valve 37 for injecting a supplemental gas into the high pressure chamber 34.
【００１７】上記高圧室３４の容積については、ランフ
ラットタイヤ１のサイズの大きさと補充用ガスの充填圧
力を考慮して適宜決定するものとする。また、上述した
リム本体３１に一体化された高圧室３４に代えて、リム
本体３１の外周部に高圧タンクを付設する構成とするこ
とも可能である。補充用ガスについては、高圧力の空
気、液化不活性ガス等の利用が考えられるが、利便性及
び経済性の点から高圧空気が適当であろう。The volume of the high-pressure chamber 34 is appropriately determined in consideration of the size of the run flat tire 1 and the filling pressure of the supplementary gas. Further, in place of the high-pressure chamber 34 integrated with the rim main body 31 described above, a configuration in which a high-pressure tank is attached to the outer peripheral portion of the rim main body 31 may be adopted. As the replenishing gas, use of high-pressure air, liquefied inert gas or the like is conceivable, but high-pressure air may be appropriate from the viewpoint of convenience and economy.
【００１８】かかる構成になるリム付ランフラットタイ
ヤのパンク時の作用について説明する。空気圧が、例え
ば規定圧の１.５ｋｇ/ｃｍ2から所定圧力の０.９ｋｇ/
ｃｍ2程度まで低下したときには、圧力制御弁３５が開
放作動して８ｋｇ/ｃｍ2程度の高圧空気が高圧室３４か
らランフラットタイヤ１内に直ちに流出する。ランフラ
ットタイヤ１内に空気が供給されてもパンクにより空気
は間断なく抜けるため、タイヤ１は少し偏平に変形す
る。しかし、車両の重量は、ランフラットタイヤ１内に
供給される空気圧とサイドウォール部３の補強層１０と
の相乗作用により支持される。その結果、ランフラット
タイヤ１は一定以上の変形が抑制されて、そのまま相当
距離を安全に走行することが可能となる。The operation at the time of puncturing of the run-flat tire with a rim having such a configuration will be described. The air pressure is, for example, from a specified pressure of 1.5 kg / cm 2 to a predetermined pressure of 0.9 kg / cm 2.
When the pressure drops to about 2 cm 2 , the pressure control valve 35 opens and the high-pressure air of about 8 kg / cm 2 immediately flows out of the high-pressure chamber 34 into the run flat tire 1. Even if air is supplied into the run flat tire 1, the puncture causes the air to escape without interruption, so that the tire 1 is slightly flattened. However, the weight of the vehicle is supported by a synergistic effect of the air pressure supplied into the run flat tire 1 and the reinforcing layer 10 of the sidewall portion 3. As a result, the deformation of the run flat tire 1 is suppressed to a certain level or more, and the run flat tire 1 can safely travel a considerable distance as it is.
【図１】ランフラットタイヤを通常のリムに装着した状
態を示す右半分の断面図FIG. 1 is a cross-sectional view of the right half showing a state in which a run flat tire is mounted on a normal rim.
【図２】図１のランフラットタイヤのパンク時の状態を
示す説明図FIG. 2 is an explanatory diagram showing a punctured state of the run flat tire of FIG. 1;
【図３】パンク時の補充用ガスを充填する高圧室を備え
たリムにランフラットタイヤを装着した状態の断面図FIG. 3 is a cross-sectional view showing a state in which a run flat tire is mounted on a rim provided with a high-pressure chamber for filling a supplementary gas at the time of puncturing.
【図４】リムの一部の断面図FIG. 4 is a sectional view of a part of a rim.
【符号の説明】 １→ランフラットタイヤ ２→トレッド部 ３→サイドウォール部 ４→ビード部 ４ａ→ビードフィラー部 ５→ビードコア ６→カーカ
ス ７→トレッド部と反対側の内面 １０→補強層 １０ａ→一方端 １０ｂ→他端 １１→
スリット １２→環状突部 ２０→リム ３０→リム ３１→リム本体 ３２→凹部 ３３→隔壁 ３４→高圧
室 ３５→圧力制御弁 ３６→空気注入弁 ３７→ガス注入
弁[Description of Signs] 1 → Run flat tire 2 → Tread 3 → Sidewall 4 → Bead 4a → Bead filler 5 → Bead core 6 → Carcass 7 → Inner surface opposite to tread 10 → Reinforcement layer 10a → One End 10b → Other end 11 →
Slit 12 → annular projection 20 → rim 30 → rim 31 → rim body 32 → recess 33 → wall 34 → high pressure chamber 35 → pressure control valve 36 → air injection valve 37 → gas injection valve
Claims (2)
てビード部のビードコアの回りを内側から外側に折り返
すようにカーカスが配置されると共に、該サイドウォー
ル部の内面に補強層を一体に形成したランフラットタイ
ヤであって、該補強層はタイヤの回転方向に直交する断
面をほぼ眉形形状とされ、その一方端をビードフィラー
部に重ね合わせ、他端を前記トレッド部と反対側の内面
に重ね合わせるように設けられ、さらに厚さ方向に多数
のスリットを形成することによりタイヤの円周方向に連
続する多数の環状突部が設けられていることを特徴とす
るランフラットタイヤ。1. A run having a carcass disposed so that a bead core of a bead portion is turned from inside to outside around a bead core from a tread portion through a sidewall portion, and a reinforcing layer is integrally formed on an inner surface of the sidewall portion. A flat tire, wherein the reinforcing layer has a cross section perpendicular to the tire rotation direction having a substantially eyebrow shape, one end of which is overlapped with a bead filler portion, and the other end of which is overlapped with an inner surface opposite to the tread portion. A run-flat tire provided with a plurality of slits formed in the thickness direction so as to be aligned with each other, and provided with a large number of annular projections continuous in the circumferential direction of the tire.
部の外周部に隔壁を周設して内部を気密に保持された高
圧室を設け若しくはリム本体に高圧タンクを付設し、タ
イヤ内の空気圧が所定圧力に低下したときに開放作動し
てその高圧室若しくは高圧タンクに充填された補充用ガ
スを該タイヤ内に流出させる圧力制御弁を設けると共
に、該補充用ガスを注入するガス注入弁とタイヤ内に空
気を注入する空気注入弁とを備えたリムに、トレッド部
からサイドウォール部を通ってビード部のビードコアの
回りを内側から外側に折り返すようにカーカスが配置さ
れると共に、該サイドウォール部の内面に補強層を一体
に形成し、該補強層はタイヤの回転方向に直交する断面
をほぼ眉形形状とされ、その一方端をビードフィラー部
に重ね合わせ、他端を前記トレッド部と反対側の内面に
重ね合わせるように設けられ、さらに厚さ方向に多数の
スリットを形成することによりタイヤの円周方向に連続
する多数の環状突部が設けられたランフラットタイヤを
装着したことを特徴とするリム付ランフラットタイヤ。2. A high pressure chamber is provided around the outer periphery of a concave portion formed at the center in the width direction of the rim main body to provide a high pressure chamber in which the inside is kept airtight, or a high pressure tank is attached to the rim main body, and A pressure control valve that opens when the air pressure of the tire drops to a predetermined pressure to allow the refill gas filled in the high-pressure chamber or the high-pressure tank to flow into the tire, and that the refill gas is injected. A carcass is arranged on a rim provided with a valve and an air injection valve for injecting air into the tire so that a bead core of the bead portion is turned from the inside to the outside around the bead core through the sidewall portion from the tread portion. A reinforcing layer is integrally formed on the inner surface of the sidewall portion, and the reinforcing layer has a cross section orthogonal to the tire rotation direction having a substantially eyebrow shape, one end of which is overlapped with the bead filler portion, and the other end is overlapped. A run-flat tire that is provided so as to overlap the inner surface on the side opposite to the tread portion, and is provided with a number of annular protrusions continuous in the circumferential direction of the tire by forming a number of slits in the thickness direction. Run-flat tire with rim, characterized by being mounted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000213898A JP2002029228A (en) | 2000-07-14 | 2000-07-14 | Run-flat tire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000213898A JP2002029228A (en) | 2000-07-14 | 2000-07-14 | Run-flat tire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002029228A true JP2002029228A (en) | 2002-01-29 |
Family
ID=18709576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000213898A Withdrawn JP2002029228A (en) | 2000-07-14 | 2000-07-14 | Run-flat tire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002029228A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002029212A (en) * | 2000-07-14 | 2002-01-29 | Sumitomo Rubber Ind Ltd | Pneumatic tire |
| KR20030081646A (en) * | 2002-04-12 | 2003-10-22 | 금호산업주식회사 | RunFlat Tire with Inner Rubber Reinforce Structure |
| KR20050015323A (en) * | 2003-08-05 | 2005-02-21 | 기아자동차주식회사 | Tire for a Vehicle |
| JP2007098992A (en) * | 2005-09-30 | 2007-04-19 | Sumitomo Rubber Ind Ltd | Runflat tire and its manufacturing method |
| JP2007196810A (en) * | 2006-01-25 | 2007-08-09 | Sumitomo Rubber Ind Ltd | Run-flat tire |
| KR100997848B1 (en) * | 2008-06-30 | 2010-12-01 | 금호타이어 주식회사 | Run flat tire with the structure of partition wall |
| JP2012011905A (en) * | 2010-07-01 | 2012-01-19 | Yokohama Rubber Co Ltd:The | Tire/wheel assembly, wheel, and pressure regulator |
-
2000
- 2000-07-14 JP JP2000213898A patent/JP2002029228A/en not_active Withdrawn
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002029212A (en) * | 2000-07-14 | 2002-01-29 | Sumitomo Rubber Ind Ltd | Pneumatic tire |
| KR20030081646A (en) * | 2002-04-12 | 2003-10-22 | 금호산업주식회사 | RunFlat Tire with Inner Rubber Reinforce Structure |
| KR20050015323A (en) * | 2003-08-05 | 2005-02-21 | 기아자동차주식회사 | Tire for a Vehicle |
| JP2007098992A (en) * | 2005-09-30 | 2007-04-19 | Sumitomo Rubber Ind Ltd | Runflat tire and its manufacturing method |
| JP2007196810A (en) * | 2006-01-25 | 2007-08-09 | Sumitomo Rubber Ind Ltd | Run-flat tire |
| JP4523918B2 (en) * | 2006-01-25 | 2010-08-11 | 住友ゴム工業株式会社 | Run flat tire |
| KR100997848B1 (en) * | 2008-06-30 | 2010-12-01 | 금호타이어 주식회사 | Run flat tire with the structure of partition wall |
| JP2012011905A (en) * | 2010-07-01 | 2012-01-19 | Yokohama Rubber Co Ltd:The | Tire/wheel assembly, wheel, and pressure regulator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20071002 |