JPH10129210A - Interior trim material for automobile tire, and automobile tire - Google Patents
Interior trim material for automobile tire, and automobile tireInfo
- Publication number
- JPH10129210A JPH10129210A JP8286843A JP28684396A JPH10129210A JP H10129210 A JPH10129210 A JP H10129210A JP 8286843 A JP8286843 A JP 8286843A JP 28684396 A JP28684396 A JP 28684396A JP H10129210 A JPH10129210 A JP H10129210A
- Authority
- JP
- Japan
- Prior art keywords
- automobile tire
- tire
- interior material
- rubber
- foam
- 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.)
- Granted
Links
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Toys (AREA)
- Tires In General (AREA)
- Tyre Moulding (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、自動車タイヤ、
特にラジコンカー用タイヤ、レースカー用タイヤ等の競
走用自動車タイヤのグリップ力及び直進安定性を向上さ
せるための内装材およびその内装材が一体化された自動
車タイヤに関する。The present invention relates to an automobile tire,
In particular, the present invention relates to an interior material for improving grip force and straight running stability of a racing automobile tire such as a radio control car tire and a race car tire, and an automobile tire having the interior material integrated.
【０００２】なお、この明細書において、「自動車タイ
ヤ」の語は、一般自動車用タイヤのみならず、ラジコン
カー用タイヤ、レースカー用タイヤ等、全ての自動車用
タイヤを包含する意味で用いる。[0002] In this specification, the term "automobile tire" is used to mean not only general automobile tires but also all automobile tires such as radio-controlled car tires, race car tires, and the like.
【０００３】[0003]
【従来の技術】例えば、ラジコンカー用、レースカー用
として、トレッドパターンのないスリックタイヤが使用
されている。スリックタイヤは、トレッドと路面との接
触面積が大きく、大きなグリップ力が得られるから、特
にカーブでの走行安定性に優れ、より高速でのカーブ走
行を可能とできるからである。2. Description of the Related Art For example, slick tires having no tread pattern are used for radio-controlled cars and race cars. This is because the slick tire has a large contact area between the tread and the road surface and can obtain a large gripping force. Therefore, the slick tire is particularly excellent in running stability on a curve and can run on a curve at a higher speed.
【０００４】一方、公道を走る一般自動車用タイヤとし
ては、駆動性、旋回性、乗り心地、騒音、摩耗、安全性
等総合的な観点から、種々のトレッドパターンを有する
タイヤが一般に使用されている。[0004] On the other hand, tires having various tread patterns are generally used as tires for general automobiles running on public roads, from the comprehensive viewpoints such as drivability, turning performance, ride comfort, noise, wear and safety. .
【０００５】[0005]
【発明が解決しようとする課題】上記スリックタイヤ
は、主に競走用として使用されるため、より高速での安
定したカーブ走行を可能とさせるべく、更なるグリップ
力の向上が強く要求されている。また、直進安定性につ
いても一層向上させることが要求されている。Since the above slick tires are mainly used for racing, further improvement in grip force is strongly demanded in order to enable a stable curve running at a higher speed. . Further, it is required to further improve the straight running stability.
【０００６】また、上記要求はスリックタイヤに限られ
たものではなく、一般自動車用タイヤにおいても同様で
あり、特に安全性の観点から、一層のグリップ力及び直
進安定性の向上が望まれている。[0006] Further, the above requirements are not limited to slick tires, but also apply to tires for general automobiles. In particular, from the viewpoint of safety, further improvement in grip force and straight running stability is desired. .
【０００７】この発明は、かかる技術的背景に鑑みてな
されたものであって、自動車タイヤのグリップ力及び直
進安定性を向上させうる内装材およびグリップ力及び直
進安定性に優れた自動車タイヤを提供することを目的と
する。The present invention has been made in view of such technical background, and provides an interior material capable of improving the grip force and the straight running stability of an automobile tire, and an automobile tire having excellent grip force and a straight running stability. The purpose is to do.
【０００８】[0008]
【課題を解決するための手段】上記目的を達成するため
に、本発明者は鋭意研究の結果、帯状環状体に形成され
た、特定の物性を有するゴム発泡体または合成樹脂発泡
体を自動車タイヤに内装することにより、グリップ力及
び直進安定性を向上しうることを見出すに至り、本発明
を完成したものである。Means for Solving the Problems In order to achieve the above object, the present inventors have conducted intensive studies and as a result, have developed a rubber foam or a synthetic resin foam having specific physical properties formed in a belt-shaped annular body into an automobile tire. It has been found that the interior of the vehicle can improve the grip force and the straight running stability, and the present invention has been completed.
【０００９】即ち、請求項１の発明にかかる自動車タイ
ヤ用内装材は、見掛比重が０．２０〜０．５０、２５％
歪み時の圧縮応力が２０〜１０００ｇ／ｃｍ2 の特性を
有するゴム発泡体からなり、帯状環状体に形成されてな
ることを特徴とするものである。That is, the interior material for an automobile tire according to the first aspect of the present invention has an apparent specific gravity of 0.20 to 0.50, 25%
It is characterized by being formed of a rubber foam having a compressive stress at the time of strain of 20 to 1000 g / cm 2 and formed in a belt-shaped annular body.
【００１０】請求項２の発明は、上記請求項１の自動車
タイヤ用内装材において、ゴム発泡体の破断伸びが１５
０〜４００％である構成を採用したものである。According to a second aspect of the present invention, in the interior material for an automobile tire of the first aspect, the rubber foam has an elongation at break of 15%.
A configuration of 0 to 400% is adopted.
【００１１】請求項３の発明は、上記請求項１または２
の自動車タイヤ用内装材において、ゴム発泡体が天然ゴ
ム発泡体である構成を採用したものである。[0011] The invention of claim 3 provides the above-mentioned claim 1 or 2
In the automobile tire interior material, the rubber foam is a natural rubber foam.
【００１２】請求項４の発明にかかる自動車タイヤ用内
装材は、見掛比重が０．２０〜０．５０、２５％歪み時
の圧縮応力が２０〜１０００ｇ／ｃｍ2 の特性を有する
合成樹脂発泡体からなり、帯状環状体に形成されてなる
ことを特徴とするものである。The interior material for an automobile tire according to the fourth aspect of the present invention is a synthetic resin foam having an apparent specific gravity of 0.20 to 0.50 and a compressive stress at 25% strain of 20 to 1000 g / cm 2. And a belt-shaped annular body.
【００１３】請求項５の発明は、上記請求項４の自動車
タイヤ用内装材において、合成樹脂発泡体の破断伸びが
１５０〜４００％である構成を採用したものである。According to a fifth aspect of the present invention, in the interior material for an automobile tire according to the fourth aspect, a structure is employed in which the synthetic resin foam has an elongation at break of 150 to 400%.
【００１４】請求項６の発明は、上記請求項１〜５のい
ずれかの自動車タイヤ用内装材において、帯状環状体の
表面に、ゴムからなる非発泡表面層が一体化されてなる
構成を採用したものである。According to a sixth aspect of the present invention, there is provided the interior material for an automobile tire according to any one of the first to fifth aspects, wherein a non-foamed surface layer made of rubber is integrated with the surface of the belt-shaped annular body. It was done.
【００１５】請求項７の発明にかかる自動車タイヤは、
請求項１〜５のいずれか１項に記載の自動車タイヤ用内
装材がタイヤ内周面に積層一体化されていることを特徴
とするものである。An automobile tire according to the invention of claim 7 is:
The interior material for an automobile tire according to any one of claims 1 to 5 is laminated and integrated on the inner peripheral surface of the tire.
【００１６】[0016]
【発明の実施の形態】この発明の自動車タイヤ用内装材
（１）の材質としては、ゴム発泡体または合成樹脂発泡
体が用いられ、上記ゴム発泡体としては、特に限定され
るものではないが、天然ゴム、ブタジエンスチレンゴ
ム、ブタジエンアクリロニトリルゴム、ポリクロロプレ
ンゴム、イソブチレンイソプレンゴム等が挙げられ、中
でも天然ゴムが好適に用いられる。また上記合成樹脂発
泡体としては、特に限定されるものではないが、ポリウ
レタン、ポリスチレン、ＡＢＳ樹脂等が挙げられる。BEST MODE FOR CARRYING OUT THE INVENTION A rubber foam or a synthetic resin foam is used as a material of an interior material (1) for an automobile tire according to the present invention, and the rubber foam is not particularly limited. And natural rubber, butadiene styrene rubber, butadiene acrylonitrile rubber, polychloroprene rubber, isobutylene isoprene rubber, and the like. Of these, natural rubber is preferably used. Examples of the synthetic resin foam include, but are not particularly limited to, polyurethane, polystyrene, and ABS resin.
【００１７】上記発泡体には、諸性質の向上を目的とし
て、安定剤、酸化防止剤、着色剤等の各種添加剤を適宜
配合することができる。Various additives such as a stabilizer, an antioxidant, and a coloring agent can be appropriately added to the foam to improve various properties.
【００１８】この発明において、前記発泡体は、見掛比
重が０．２０〜０．５０、２５％歪み時の圧縮応力が２
０〜１０００ｇ／ｃｍ2 の特性を有する必要がある。上
記２特性の内、１つでも上記範囲を逸脱すると、この発
明の効果が達成されない。In the present invention, the foam has an apparent specific gravity of 0.20 to 0.50 and a compressive stress of 2% at a strain of 2%.
It must have a property of 0 to 1000 g / cm 2 . If at least one of the two characteristics deviates from the above range, the effect of the present invention is not achieved.
【００１９】中でも、見掛比重は０．３０〜０．４５、
２５％歪み時の圧縮応力は４０〜６００ｇ／ｃｍ2 であ
ることが好ましい。Among them, apparent specific gravity is 0.30 to 0.45,
The compressive stress at the time of 25% strain is preferably 40 to 600 g / cm 2 .
【００２０】前記発泡体の破断伸びは１５０〜４００％
であることが好ましい。１５０％未満あるいは４００％
を超えるとグリップ力向上の効果が十分に得られず、好
ましくない。The foam has an elongation at break of 150 to 400%.
It is preferred that Less than 150% or 400%
When the ratio exceeds the above range, the effect of improving the grip force cannot be sufficiently obtained, which is not preferable.
【００２１】また、前記発泡体の常温永久歪（５０％ひ
ずみ×２２時間）は、５〜３０％であることが好まし
く、加熱永久歪（５０％ひずみ×７０℃２２時間）は、
４５〜８０％であることが好ましい。また、前記発泡体
のスポンジ硬度は、５〜４０°であることが好ましい。The permanent set (50% strain × 22 hours) of the foam is preferably 5 to 30%, and the permanent set by heating (50% strain × 70 ° C. 22 hours) is:
It is preferably 45 to 80%. Further, the foam has preferably a sponge hardness of 5 to 40 °.
【００２２】この発明の自動車タイヤ用内装材（１）
は、上記特性を有する発泡体が帯状環状体に形成されて
なるものである。前記環状形状は、円形であることが好
ましいが、特に円形形状に限定されるものではなく、例
えば、楕円形状であっても良い。The interior material for automobile tires of the present invention (1)
Is a product in which a foam having the above characteristics is formed in a belt-shaped annular body. The annular shape is preferably circular, but is not particularly limited to a circular shape, and may be, for example, an elliptical shape.
【００２３】前記帯状環状体の表面には、ゴムからなる
非発泡表面層が一体化されていることが好ましく、これ
によりタイヤ内周面（2a）との摩擦による発泡体の摩耗
を防止することができる。It is preferable that a non-foamed surface layer made of rubber is integrated with the surface of the belt-shaped annular body, thereby preventing abrasion of the foam due to friction with the tire inner peripheral surface (2a). Can be.
【００２４】内装材（１）の横断面形状は矩形状あるい
はこれに近似する形状であることが好ましい。特に内装
材の外周面（1a）側は高速回転時にタイヤの内周面（2
a）に可能なかぎり均一に当接させることが好ましいか
ら、内装材の外周面（1a）形状は、タイヤの内周面（2
a）形状に適合する形状であることが好ましい。It is preferable that the cross-sectional shape of the interior material (1) is rectangular or similar. In particular, the outer peripheral surface (1a) of the interior material is the inner peripheral surface (2
Since it is preferable to make the abutment as uniform as possible, the outer peripheral surface (1a) of the interior material should have the inner peripheral surface (2
a) It is preferable that the shape is adapted to the shape.
【００２５】内装材（１）の幅は内装対象となるタイヤ
（２）の幅の２０％〜１００％に設定することが好まし
く、中でも６０％〜９０％に設定することがより好まし
い。２０％未満ではグリップ力向上の効果が十分に得ら
れず、好ましくない。The width of the interior material (1) is preferably set to 20% to 100% of the width of the tire (2) to be interior, and more preferably to 60% to 90%. If it is less than 20%, the effect of improving the grip strength cannot be sufficiently obtained, which is not preferable.
【００２６】また、内装材（１）の厚さは内装対象とな
るタイヤ（２）厚さの１倍〜５倍であることが好まし
く、中でも１．５〜３倍であることが好ましい。１倍未
満あるいは５倍を超えるとグリップ力向上の効果が十分
に得られなくなる。The thickness of the interior material (1) is preferably 1 to 5 times, and more preferably 1.5 to 3 times, the thickness of the tire (2) to be interior. If it is less than 1 time or more than 5 times, the effect of improving the grip force cannot be sufficiently obtained.
【００２７】内装材（１）の外周長さを設定するに際し
ては、図２（ロ）に示すように、内装材（１）の外周長
さをタイヤ（３）の内周長さより僅かに小さく設定し、
静止時の内装状態において、内装材の外周面（1a）とタ
イヤの内周面（2a）との間に隙間が生じるようにしても
良いし、あるいは内装材（１）の外周長さを内装対象と
なるタイヤ（３）の内周長さと同等長さに設定して内装
材の外周面（1a）がタイヤの内周面（2a）に当接するよ
うにしても良い。ただし、タイヤ（２）を高速回転状態
にした時に内装材（１）が膨脹して内装材の外周面（1
a）がタイヤの内周面（2a）に当接するものでなけれ
ば、この発明の効果が得られないので、高速回転時に内
装材の外周面（1a）がタイヤの内周面（2a）に当接し得
るように内装材（１）の外周長さを設定する必要があ
る。When setting the outer peripheral length of the interior material (1), as shown in FIG. 2B, the outer peripheral length of the interior material (1) is slightly smaller than the inner peripheral length of the tire (3). Set,
In the stationary interior state, a gap may be formed between the outer peripheral surface (1a) of the interior material and the inner peripheral surface (2a) of the tire, or the outer peripheral length of the interior material (1) is The outer peripheral surface (1a) of the interior material may be set to be in contact with the inner peripheral surface (2a) of the tire by setting the same length as the inner peripheral length of the target tire (3). However, when the tire (2) is rotated at a high speed, the interior material (1) expands and the outer peripheral surface (1
If a) does not abut against the inner peripheral surface (2a) of the tire, the effect of the present invention cannot be obtained, so that the outer peripheral surface (1a) of the interior material contacts the inner peripheral surface (2a) of the tire during high-speed rotation. It is necessary to set the outer peripheral length of the interior material (1) so that it can abut.
【００２８】一方、ホイール（３）に対しても同様で、
静止時において、内装材内周面（1b）がホイール外周面
（3a）のリブ（3b）に当接するように設計しても良い
し、あるいは内装材内周面（1b）とホイール外周面（3
a）のリブ（3b）との間に隙間が生じるように設計して
も良い。On the other hand, the same applies to the wheel (3).
When stationary, the inner peripheral surface (1b) of the interior material may be designed to contact the rib (3b) of the outer peripheral surface (3a) of the wheel, or the inner peripheral surface (1b) of the interior material and the outer peripheral surface of the wheel ( Three
A design may be made so that a gap is formed between the rib (3b) of a).
【００２９】この発明に係る内装材（１）を自動車タイ
ヤ（３）に内装することにより、グリップ力及び直進安
定性が向上する理由は定かではないが、タイヤ（３）の
高速回転状態において、遠心力により内装材（１）が膨
脹してタイヤ（３）の内側に強く圧接することにより、
タイヤ（３）の路面に対する接地圧が大きくなるためと
推定される。Although the reason why the interior material (1) according to the present invention is provided in an automobile tire (3) to improve the grip force and the straight running stability is not clear, it is not clear that the tire (3) rotates at high speed. The interior material (1) expands due to centrifugal force and strongly presses against the inside of the tire (3),
It is estimated that the contact pressure of the tire (3) with respect to the road surface increases.
【００３０】また、この発明に係る自動車タイヤは、前
記内装材（１）がタイヤ内周面（2a）に積層一体化され
てなるものであるが、その一体化の方法としては、特に
限定されるものではないが、ポリウレタンゴム系接着
剤、ブチルゴム系接着剤、シリコーンゴム系接着剤、ク
ロロプレンゴム系接着剤等の合成ゴム系接着剤等による
接着が挙げられる。In the automobile tire according to the present invention, the interior material (1) is laminated and integrated on the inner peripheral surface (2a) of the tire. The method of integration is not particularly limited. Although not limited thereto, bonding with a synthetic rubber-based adhesive such as a polyurethane rubber-based adhesive, a butyl rubber-based adhesive, a silicone rubber-based adhesive, and a chloroprene rubber-based adhesive may be used.
【００３１】[0031]
【実施例】次に、この発明の具体的実施例について説明
する。Next, specific embodiments of the present invention will be described.
【００３２】＜実施例１、２、比較例２〜３＞天然ゴム
を発泡成形して、表１に示す特性を有する天然ゴム発泡
体からなる内装材（幅２２ｍｍ、厚さ５ｍｍ、外径６０
ｍｍの帯状環状体）を得た。<Examples 1 and 2 and Comparative Examples 2 and 3> An interior material (22 mm in width, 5 mm in thickness, 60 mm in outer diameter) made of a natural rubber foam having the properties shown in Table 1 was molded by foaming natural rubber.
mm band-like annular body).
【００３３】＜実施例３＞ポリクロロプレンゴムを発泡
成形して、表１に示す特性を有するポリクロロプレンゴ
ム発泡体からなる、実施例１と同形状の帯状環状体を
得、この表面に厚さ０．３ｍｍの非発泡クロロプレンゴ
ムを一体化して、内装材を得た。Example 3 A polychloroprene rubber was foam-molded to obtain a band-shaped annular body of the same shape as that of Example 1 which was made of a polychloroprene rubber foam having the properties shown in Table 1. An interior material was obtained by integrating a 0.3 mm non-foamed chloroprene rubber.
【００３４】＜実施例４、５＞ポリスチレン樹脂を発泡
成形して、表１に示す特性を有するポリスチレン樹脂発
泡体からなる、実施例１と同形状の内装材を得た。Examples 4 and 5 A polystyrene resin was foam-molded to obtain an interior material having the same shape as that of Example 1 and made of a polystyrene resin foam having the properties shown in Table 1.
【００３５】＜実施例６＞ポリウレタン樹脂を発泡成形
して、表１に示す特性を有するポリウレタン樹脂発泡体
からなる、実施例１と同形状の帯状環状体を得、この表
面に厚さ０．３ｍｍの非発泡クロロプレンゴムを一体化
して、内装材を得た。Example 6 A polyurethane resin was foam-molded to obtain a belt-shaped annular body having the same characteristics as in Example 1 and made of a polyurethane resin foam having the properties shown in Table 1. A 3 mm non-foamed chloroprene rubber was integrated to obtain an interior material.
【００３６】＜比較例１＞ポリウレタン樹脂を発泡成形
して、表１に示す特性を有するポリウレタン樹脂発泡体
からなる、実施例１と同形状の内装材を得た（従来より
一般に使用されている内装材である）。Comparative Example 1 A polyurethane resin was foam-molded to obtain an interior material having the same shape as that of Example 1 and made of a polyurethane resin foam having the properties shown in Table 1. Interior material).
【００３７】＜実施例７＞実施例２記載の内装材をゴム
製自動車タイヤ（外周面幅２７ｍｍ、内周面幅２３ｍ
ｍ、外径６６ｍｍ、タイヤ厚さ２．５ｍｍ）の内周面に
積層一体化して自動車タイヤを得た。Example 7 The interior material described in Example 2 was replaced with a rubber automobile tire (outer peripheral surface width 27 mm, inner peripheral surface width 23 m).
m, an outer diameter of 66 mm, and a tire thickness of 2.5 mm).
【００３８】＜実施例８＞実施例５記載の内装材を前記
同様のゴム製自動車タイヤの内周面に積層一体化して自
動車タイヤを得た。Example 8 The interior material described in Example 5 was laminated and integrated on the inner peripheral surface of the same rubber-made automobile tire to obtain an automobile tire.
【００３９】＜試験方法および評価方法＞上記各内装材
をラジコンカーのゴムタイヤ（外周面幅２７ｍｍ、内周
面幅２３ｍｍ、外径６６ｍｍ、タイヤ厚さ２．５ｍｍ）
に内装して、このラジコンカーを熟練者が操縦して走行
させ、下記評価方法に従い、評価を行った。また、実施
例７、８記載の自動車タイヤをラジコンカーに装着して
前記同様に評価を行った。その結果を表１に示す。<Test Method and Evaluation Method> Each of the above interior materials was used as a rubber tire of a radio control car (outer peripheral surface width 27 mm, inner peripheral surface width 23 mm, outer diameter 66 mm, tire thickness 2.5 mm).
The radio controlled car was operated by a skilled operator and run, and evaluated according to the following evaluation method. Further, the automobile tires described in Examples 7 and 8 were mounted on a radio-controlled car and evaluated in the same manner as described above. Table 1 shows the results.
【００４０】Ａ．グリップ力評価方法 時速３０ｋｍで曲率半径６．５ｍのカーブを走行させ、
その時の走行安定性を評価した。グリップ力を発揮して
何ら支障なくカーブを曲がり切れたものを合格とし、コ
ースアウト、スピン、車体が転倒する等カーブ走行に支
障が生じたものを不合格とし、各１０回試験を行って、
その合格回数で比較評価した。A. Grip force evaluation method Drive a curve with a radius of curvature of 6.5 m at a speed of 30 km / h,
The running stability at that time was evaluated. Passing the curve that shows the grip and without any hindrance to the curve is acceptable, and rejecting the one that hinders the curve running such as out of course, spin, and the body falling, conduct 10 tests each,
Comparative evaluation was made based on the number of passes.
【００４１】Ｂ．直進安定性評価方法 時速４５ｋｍで４０ｍの直線コースを走行させ、その時
の直進安定性を下記判定基準により評価した。B. Straight running stability evaluation method A straight running course of 40 m was run at a speed of 45 km / h, and the straight running stability at that time was evaluated according to the following criteria.
【００４２】（判定基準） 車体の横ぶれがない ○ 車体の横ぶれが小さい △ 車体の横ぶれが大きい ×(Judgment Criteria) No lateral displacement of vehicle body ○ Small lateral displacement of vehicle body △ Large lateral displacement of vehicle body ×
【００４３】[0043]
【表１】 [Table 1]
【００４４】表１から明らかなように、この発明の実施
例１〜６の内装材をタイヤに内装すれば、カーブ走行安
定性に優れるとともに、直進安定性にも優れる。また、
内装材の破断伸びが１５０〜４００％の範囲にある場合
には、なお一層カーブ走行安定性に優れることを確認し
得た。また、実施例７、８の自動車タイヤもカーブ走行
安定性、直進安定性ともに優れている。As is apparent from Table 1, when the interior materials of Examples 1 to 6 of the present invention are installed in a tire, the running stability in a curve and the running stability in a straight line are excellent. Also,
When the elongation at break of the interior material was in the range of 150 to 400%, it was confirmed that the curve running stability was further excellent. Further, the vehicle tires of Examples 7 and 8 are also excellent in both curve running stability and straight running stability.
【００４５】これに対し、この発明の範囲を逸脱する比
較例１〜３の内装材をタイヤに内装した場合には、カー
ブ走行安定性、直進安定性ともに劣っている。On the other hand, when the interior materials of Comparative Examples 1 to 3 which deviate from the scope of the present invention are incorporated in the tire, both the curve running stability and the straight running stability are inferior.
【００４６】また、実施例１の内装材をタイヤに内装し
た場合と、比較例１の内装材をタイヤに内装した場合と
で、時速４５ｋｍで直進中に急激なブレーキ操作を行
い、ブレーキ制動性を評価したところ、前者は横すべり
など生じることなく車体が安定した状態で停止して制動
性能に優れていたのに対し、後者は車体がスピンしてし
まい制動性能に劣っていた。In the case where the interior material of Example 1 was installed in the tire and the case where the interior material of Comparative Example 1 was installed in the tire, a sudden braking operation was performed while the vehicle was running straight at 45 km / h, and the braking performance was improved. When the former was evaluated, the former was excellent in braking performance by stopping the vehicle body in a stable state without occurrence of side slip, etc., whereas the latter was inferior in braking performance due to spinning of the vehicle body.
【００４７】更に、実施例１の内装材をタイヤに内装し
た場合と、比較例１の内装材をタイヤに内装した場合と
で、同走行状態、同走行距離においてタイヤの摩耗量を
比較したところ、前者の方が２０％少ないものであっ
た。Further, the wear amount of the tire was compared between the case where the interior material of Example 1 was installed in the tire and the case where the interior material of Comparative Example 1 was installed in the tire in the same running state and the same running distance. The former was 20% less.
【００４８】[0048]
【発明の効果】以上のように、この発明に係る自動車タ
イヤ用内装材は、見掛比重が０．２０〜０．５０、２５
％歪み時の圧縮応力が２０〜１０００ｇ／ｃｍ2 の特性
を有するゴム発泡体または合成樹脂発泡体からなり、帯
状環状体に形成されてなるものであるから、自動車タイ
ヤに内装すれば、タイヤのグリップ力を向上させること
ができて、より高速での安定したカーブ走行を可能とす
ることができ、かつ直進安定性をも向上させることがで
きる。また、タイヤの制動性能をも向上させることがで
き、例えばタイヤが高速回転状態の時に急激なブレーキ
操作を行っても横すべりやスピンを生じることがなく、
安定した減速あるいは停止を行うことができる。加え
て、内装されたタイヤの摩耗量は減少するから、タイヤ
寿命をも延ばすことができる。As described above, the interior material for an automobile tire according to the present invention has an apparent specific gravity of 0.20 to 0.50, 25.
It is made of a rubber foam or a synthetic resin foam having a compression stress at the time of% strain of 20 to 1000 g / cm 2 , and is formed in a belt-shaped annular body. The grip force can be improved, a stable curve running at a higher speed can be achieved, and the straight running stability can be improved. Also, it is possible to improve the braking performance of the tire, for example, even if a sharp braking operation is performed when the tire is in a high-speed rotation state, no side slip or spin occurs,
Stable deceleration or stop can be performed. In addition, since the wear amount of the tire mounted on the tire is reduced, the life of the tire can be extended.
【００４９】上記において発泡体の破断伸びが１５０〜
４００％の範囲にある場合には、一段とグリップ力が向
上してカーブ走行安定性を一層向上させることができ
る。In the above, the breaking elongation of the foam is 150 to
When it is in the range of 400%, the grip force is further improved, and the curve running stability can be further improved.
【００５０】また、帯状環状体の表面に、ゴムからなる
非発泡表面層が一体化されてなる場合には、タイヤ内周
面との摩擦による発泡体の摩耗を防止することができ
る。When a non-foamed surface layer made of rubber is integrated with the surface of the belt-shaped annular body, abrasion of the foam due to friction with the inner peripheral surface of the tire can be prevented.
【００５１】また、この発明に係る自動車タイヤは、前
記内装材がタイヤ内周面に積層一体化されているから、
グリップ力に優れて、高速での安定したカーブ走行が可
能となるとともに、直進安定性にも優れ、かつ制動性能
にも優れる。In the automobile tire according to the present invention, the interior material is laminated and integrated on the inner peripheral surface of the tire.
It has excellent grip and enables stable running at high speeds, and also has excellent straight running stability and excellent braking performance.
【図面の簡単な説明】[Brief description of the drawings]
【図１】この発明の好ましい実施の形態の１つを示す図
であって、同図（イ）は斜視図、同図（ロ）は側断面図
である。FIG. 1 is a view showing one of preferred embodiments of the present invention, wherein FIG. 1A is a perspective view and FIG. 1B is a side sectional view.
【図２】タイヤへの内装態様を示す図であって、同図
（イ）は一部を切り欠いた斜視図、同図（ロ）は側断面
図である。FIGS. 2A and 2B are views showing an interior aspect of a tire. FIG. 2A is a perspective view with a part cut away, and FIG. 2B is a side sectional view.
１…内装材 ２…タイヤ ３…ホイール 1. Interior materials 2. Tires 3. Wheels
─────────────────────────────────────────────────────
────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成９年２月２５日[Submission date] February 25, 1997
【手続補正１】[Procedure amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００４８[Correction target item name] 0048
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【００４８】[0048]
【発明の効果】以上のように、この発明に係る自動車タ
イヤ用内装材は、見掛比重が０．２０〜０．５０、２５
％歪み時の圧縮応力が２０〜１０００ｇ／ｃｍ2 の特性
を有するゴム発泡体または合成樹脂発泡体からなり、帯
状環状体に形成されてなるものであるから、自動車タイ
ヤに内装すれば、タイヤのグリップ力を向上させること
ができて、より高速での安定したカーブ走行を可能とす
ることができ、かつ直進安定性をも向上させることがで
きる。また、タイヤの制動性能をも向上させることがで
き、例えばタイヤが高速回転状態の時に急激なブレーキ
操作を行っても横すべりやスピンを生じることがなく、
安定した減速あるいは停止を行うことができる。更に、
内装されたタイヤの摩耗量は減少するから、タイヤ寿命
をも延ばすことができる。加えて、空気が圧充填される
自動車タイヤに内装した場合には、走行時において、釘
などの異物がタイヤ内周面まで貫通するようなことがあ
っても、厚みを有する内装材が膨脹してタイヤ内周面に
圧接しているから、シール効果を発揮して、急激な空気
漏れが生じるのを防止でき、従って殊に車両走行時にお
けるパンクによる危険を回避することができる。As described above, the interior material for an automobile tire according to the present invention has an apparent specific gravity of 0.20 to 0.50, 25.
It is made of a rubber foam or a synthetic resin foam having a compression stress at the time of% strain of 20 to 1000 g / cm 2 , and is formed in a belt-shaped annular body. The grip force can be improved, a stable curve running at a higher speed can be achieved, and the straight running stability can be improved. Also, it is possible to improve the braking performance of the tire, for example, even if a sharp braking operation is performed when the tire is in a high-speed rotation state, no side slip or spin occurs,
Stable deceleration or stop can be performed. Furthermore,
Since the amount of wear of the mounted tire is reduced, the life of the tire can be extended. In addition, when the vehicle is mounted on an automobile tire that is filled with air, even if foreign substances such as nails may penetrate to the tire inner peripheral surface during running, the thick interior material may expand. As a result, the tire is pressed against the inner peripheral surface of the tire, so that a sealing effect can be exerted, thereby preventing a sudden air leak from occurring, and thereby avoiding the danger of puncture, particularly during running of the vehicle.
Claims (7)
歪み時の圧縮応力が２０〜１０００ｇ／ｃｍ2 の特性を
有するゴム発泡体からなり、帯状環状体に形成されてな
ることを特徴とする自動車タイヤ用内装材。1. An apparent specific gravity of 0.20 to 0.50, 25%
An interior material for an automobile tire, comprising a rubber foam having a compression stress at the time of strain of 20 to 1000 g / cm 2 and formed in a belt-shaped annular body.
％である請求項１に記載の自動車タイヤ用内装材。2. The rubber foam has an elongation at break of 150 to 400.
%. The interior material for an automobile tire according to claim 1, wherein
項１または２に記載の自動車タイヤ用内装材。3. The interior material for an automobile tire according to claim 1, wherein the rubber foam is a natural rubber foam.
歪み時の圧縮応力が２０〜１０００ｇ／ｃｍ2 の特性を
有する合成樹脂発泡体からなり、帯状環状体に形成され
てなることを特徴とする自動車タイヤ用内装材。4. An apparent specific gravity of 0.20 to 0.50, 25%
An interior material for an automobile tire, comprising a synthetic resin foam having a compression stress at the time of strain of 20 to 1000 g / cm 2 and formed in a belt-shaped annular body.
００％である請求項４に記載の自動車タイヤ用内装材。5. The synthetic resin foam has an elongation at break of 150-4.
The interior material for an automobile tire according to claim 4, which is 00%.
非発泡表面層が一体化されてなる請求項１〜５のいずれ
か１項に記載の自動車タイヤ用内装材。6. The interior material for an automobile tire according to claim 1, wherein a non-foamed surface layer made of rubber is integrated with the surface of the band-shaped annular body.
動車タイヤ用内装材がタイヤ内周面に積層一体化されて
いることを特徴とする自動車タイヤ。7. An automobile tire, wherein the interior material for an automobile tire according to any one of claims 1 to 5 is laminated and integrated on an inner peripheral surface of the tire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28684396A JP3615881B2 (en) | 1996-10-29 | 1996-10-29 | Interior materials for automobile tires and automobile tires |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28684396A JP3615881B2 (en) | 1996-10-29 | 1996-10-29 | Interior materials for automobile tires and automobile tires |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10129210A true JPH10129210A (en) | 1998-05-19 |
| JP3615881B2 JP3615881B2 (en) | 2005-02-02 |
Family
ID=17709758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28684396A Expired - Fee Related JP3615881B2 (en) | 1996-10-29 | 1996-10-29 | Interior materials for automobile tires and automobile tires |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3615881B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011137785A (en) * | 2010-01-04 | 2011-07-14 | Beckman Coulter Inc | Analyzer |
-
1996
- 1996-10-29 JP JP28684396A patent/JP3615881B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011137785A (en) * | 2010-01-04 | 2011-07-14 | Beckman Coulter Inc | Analyzer |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3615881B2 (en) | 2005-02-02 |
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