JP2001097003A - Tire and rim assembly for motorcycles - Google Patents
Tire and rim assembly for motorcyclesInfo
- Publication number
- JP2001097003A JP2001097003A JP2000226748A JP2000226748A JP2001097003A JP 2001097003 A JP2001097003 A JP 2001097003A JP 2000226748 A JP2000226748 A JP 2000226748A JP 2000226748 A JP2000226748 A JP 2000226748A JP 2001097003 A JP2001097003 A JP 2001097003A
- Authority
- JP
- Japan
- Prior art keywords
- tire
- rim
- sponge
- assembly
- motorcycle
- 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
- 241000195940 Bryophyta Species 0.000 claims abstract description 55
- 235000011929 mousse Nutrition 0.000 claims abstract description 55
- 238000004519 manufacturing process Methods 0.000 claims abstract description 15
- 239000011324 bead Substances 0.000 claims abstract description 13
- 238000005187 foaming Methods 0.000 claims description 5
- 229920001971 elastomer Polymers 0.000 description 6
- 238000011156 evaluation Methods 0.000 description 6
- 239000005060 rubber Substances 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 239000004156 Azodicarbonamide Substances 0.000 description 4
- XOZUGNYVDXMRKW-AATRIKPKSA-N azodicarbonamide Chemical compound NC(=O)\N=N\C(N)=O XOZUGNYVDXMRKW-AATRIKPKSA-N 0.000 description 4
- 235000019399 azodicarbonamide Nutrition 0.000 description 4
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 3
- 239000004088 foaming agent Substances 0.000 description 3
- 230000001771 impaired effect Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- MWRWFPQBGSZWNV-UHFFFAOYSA-N Dinitrosopentamethylenetetramine Chemical compound C1N2CN(N=O)CN1CN(N=O)C2 MWRWFPQBGSZWNV-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 150000001993 dienes Chemical class 0.000 description 2
- 229920003051 synthetic elastomer Polymers 0.000 description 2
- 239000005061 synthetic rubber Substances 0.000 description 2
- 238000004073 vulcanization Methods 0.000 description 2
- 235000014692 zinc oxide Nutrition 0.000 description 2
- 239000011787 zinc oxide Substances 0.000 description 2
- 241000282994 Cervidae Species 0.000 description 1
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- 235000021355 Stearic acid Nutrition 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 235000006708 antioxidants Nutrition 0.000 description 1
- VJRITMATACIYAF-UHFFFAOYSA-N benzenesulfonohydrazide Chemical class NNS(=O)(=O)C1=CC=CC=C1 VJRITMATACIYAF-UHFFFAOYSA-N 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229920003193 cis-1,4-polybutadiene polymer Polymers 0.000 description 1
- 229920003211 cis-1,4-polyisoprene Polymers 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- -1 oxybisbenzenesulfonyl Chemical group 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000010734 process oil Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 description 1
- UMGLWJIVIBWZCW-UHFFFAOYSA-L zinc;benzenesulfinate Chemical compound [Zn+2].[O-]S(=O)C1=CC=CC=C1.[O-]S(=O)C1=CC=CC=C1 UMGLWJIVIBWZCW-UHFFFAOYSA-L 0.000 description 1
Landscapes
- Tires In General (AREA)
Abstract
(57)【要約】
【課題】 操縦安定性および乗り心地性能を損なうこと
なく、パンクの発生防止を図ることができるとともに、
タイヤのリム組作業を容易に行うことができる自動二輪
車用のタイヤとリムの組み立て体を提供する。
【解決手段】 タイヤ１と、該タイヤ１をリム組みする
リム５と、該タイヤ１と該リム５とが囲むタイヤ内腔に
装填されて実質上タイヤ内面全体に接して圧縮される、
タイヤ周方向に環状かつ独立気泡を有するスポンジ状ム
ース体７と、を具備する自動二輪車用のタイヤとリムの
組み立て体において、前記スポンジ状ムース体７のリム
組み込み前のフリー状態での内径をｄｍ、前記タイヤ１
のビードベース径をｄｔとしたとき、組み立て体製造時
において下記式、ｄｍ／ｄｔ＝０．９０〜１．００で表
される関係を満足する。
(57) [Summary] [PROBLEMS] To prevent the occurrence of puncture without impairing steering stability and ride comfort performance,
Provided is an assembly of a tire and a rim for a motorcycle, which can easily perform a tire rim assembling operation. SOLUTION: A tire 1, a rim 5 for assembling the tire 1, a rim 5 mounted on a tire cavity surrounded by the tire 1 and the rim 5, and compressed substantially in contact with the entire inner surface of the tire.
In a motorcycle tire and rim assembly comprising: a sponge-shaped mousse body 7 having an annular and closed cell in the tire circumferential direction, an inner diameter of the sponge-shaped mousse body 7 in a free state before the rim is assembled is dm. , The tire 1
Assuming that the bead base diameter is dt, the relationship expressed by the following formula, dm / dt = 0.90 to 1.00, is satisfied during the production of the assembly.
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、自動二輪車用のタ
イヤとリムの組み立て体に関し、詳しくは、操縦安定性
および乗り心地性能を損なうことなく、パンクの発生防
止を図ることができるとともに、タイヤのリム組作業を
容易に行うことができる自動二輪車用のタイヤとリムの
組み立て体に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an assembly of a tire and a rim for a motorcycle, and more particularly, to a tire and a rim assembly capable of preventing puncture without impairing steering stability and ride comfort. The present invention relates to a motorcycle tire and rim assembly that can easily perform the rim assembly work.
【０００２】[0002]
【従来の技術】自動二輪車が不整地を走行する場合は、
様々な路面状況の変化があり、特に砂利、瓦礫、岩盤、
森林地帯などの走行ではタイヤの局部変形の繰り返しに
よるチューブのパンクや、路面突起物などの原因による
パンクの危険性が高い。モトクロスレースでは、前記理
由に加えジャンプの着地時にタイヤが局部変形し、チュ
ーブが圧縮されて破損することが多々ある。2. Description of the Related Art When a motorcycle runs on uneven terrain,
There are various road surface changes, especially gravel, rubble, bedrock,
When traveling in a forest area, there is a high risk of puncture of the tube due to repeated local deformation of the tire and puncture caused by road surface protrusions. In the motocross race, in addition to the above reasons, the tire is sometimes locally deformed at the time of jump landing, and the tube is compressed and damaged in many cases.
【０００３】従来のパンク防止策としては、タイヤの局
部変形を避けるために内圧を高める、チューブ使用の場
合には肉厚のチューブを使用する、若しくはダブルチュ
ーブにする、などの対処を行っていた。しかし、これら
対処を行ってもパンクを完全に防止することは不可能で
あるし、逆に内圧を高めることによる操縦安定性および
乗り心地性の低下や、肉厚チューブ、ダブルチューブ使
用による操縦安定性および乗り心地性の低下に加え、重
量の増加という欠点があった。Conventional measures for preventing puncture include increasing the internal pressure in order to avoid local deformation of the tire, using thick tubes when using tubes, or using double tubes. . However, it is impossible to completely prevent puncture even if these measures are taken, and conversely, steering stability and ride comfort are reduced by increasing internal pressure, and steering stability is increased by using thick tubes and double tubes. The drawback is that the weight is increased in addition to the decrease in the rideability and the riding comfort.
【０００４】そこで、走行時の操縦安定性と乗り心地性
を維持しつつタイヤのパンクを防止することを目的とし
て、タイヤとリムとが囲むタイヤ内腔にスポンジ状ムー
ス体を充填することが提案された（特許第２８０４２２
６号）。[0004] Therefore, it has been proposed to fill a tire cavity surrounded by a tire and a rim with a sponge-like mousse body for the purpose of preventing puncture of the tire while maintaining steering stability and riding comfort during running. (Japanese Patent No. 280422)
No. 6).
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、前記特
許において提案されたスポンジ状ムース体の充填の場合
には、タイヤとともに該スポンジ状ムース体をリムに組
み込む作業が容易ではないという問題があった。また、
操縦安定性および乗り心地性能の面で必ずしも十分とは
いえなかった。However, in the case of filling the sponge-shaped mousse body proposed in the above patent, there is a problem that it is not easy to incorporate the sponge-shaped mousse body with the tire into the rim. Also,
Maneuvering stability and ride comfort were not always sufficient.
【０００６】そこで本発明の目的は、操縦安定性および
乗り心地性能を損なうことなく、パンクの発生防止を図
ることができるとともに、タイヤのリム組作業を容易に
行うことができる自動二輪車用のタイヤとリムの組み立
て体を提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a motorcycle tire capable of preventing the occurrence of puncture without impairing steering stability and ride comfort, and capable of easily performing a tire rim assembly operation. And rim assembly.
【０００７】[0007]
【課題を解決するための手段】本発明者は、前記課題を
解決すべく、スポンジ状ムース体の最適寸度について鋭
意検討した結果、スポンジ状ムース体とタイヤとを相互
の関係において所定の寸度とすることにより、前記目的
を達成し得ることを見出し、本発明を完成するに至っ
た。即ち、本発明は下記に示すとおりである。Means for Solving the Problems In order to solve the above-mentioned problems, the present inventors have made intensive studies on the optimum dimensions of the sponge-like mousse body, and as a result, have determined that the sponge-like mousse body and the tire have a predetermined size in relation to each other. It has been found that the above-mentioned object can be achieved by the above-mentioned degree, and the present invention has been completed. That is, the present invention is as described below.
【０００８】（１）タイヤと、該タイヤをリム組みする
リムと、該タイヤと該リムとが囲むタイヤ内腔に装填さ
れて実質上タイヤ内面全体に接して圧縮される、タイヤ
周方向に環状かつ独立気泡を有するスポンジ状ムース体
と、を具備する自動二輪車用のタイヤとリムの組み立て
体において、前記スポンジ状ムース体のリム組み込み前
のフリー状態での内径をｄｍ、前記タイヤのビードベー
ス径をｄｔとしたとき、組み立て体製造時において下記
式、 ｄｍ／ｄｔ＝０．９０〜１．００ で表される関係を満足することを特徴とする自動二輪車
用のタイヤとリムの組み立て体である。(1) A tire, a rim for assembling the tire, a rim for assembling the tire, and an annular ring in the circumferential direction of the tire which is loaded into a tire bore surrounded by the tire and the rim and is substantially in contact with the entire inner surface of the tire. And a sponge-shaped mousse body having closed cells, and a tire and rim assembly for a motorcycle comprising a sponge-shaped mousse body, wherein the inner diameter of the sponge-shaped mousse body in a free state before the rim is incorporated is dm, and the bead base diameter of the tire Where dt is dt, the tire and rim assembly for a motorcycle characterized by satisfying the relationship represented by the following formula at the time of manufacturing the assembly: dm / dt = 0.90 to 1.00. .
【０００９】（２）前記（１）の自動二輪車用のタイヤ
とリムの組み立て体において、前記スポンジ状ムース体
のリム組み込み前のフリー状態での軸方向断面の断面積
をＳｍ、前記タイヤ内腔の軸方向断面の断面積をＳｔと
したとき、組み立て体製造時において下記式、 Ｓｍ／Ｓｔ＝１．０５〜１．２０ で表される関係を満足する自動二輪車用のタイヤとリム
の組み立て体である。(2) In the motorcycle tire and rim assembly of (1), the sponge-shaped mousse body has a sectional area of Sm in an axial cross section in a free state before the rim is assembled, and the tire bore Assuming that the cross-sectional area of the cross section in the axial direction is St, an assembly of a tire and a rim for a motorcycle that satisfies the relationship represented by the following formula: Sm / St = 1.05 to 1.20 during manufacture of the assembly. It is.
【００１０】（３）前記（１）または（２）の自動二輪
車用のタイヤとリムの組み立て体において、前記スポン
ジ状ムース体のリム組み込み前のフリー状態でのタイヤ
軸方向断面最大幅Ｗｍ（ｍａｘ）の位置Ｐｍにおける直
径をＤｍ、前記タイヤ内腔の最大幅Ｗｔ（ｍａｘ）の位
置Ｐｔにおける直径をＤｔとしたとき、組み立て体製造
時において下記式、 Ｄｍ／Ｄｔ＝０．９０〜１．００ で表される関係を満足する自動二輪車用のタイヤとリム
の組み立て体である。(3) In the motorcycle tire and rim assembly according to (1) or (2), the sponge-shaped mousse body has a maximum axial width Wm (max) in a free state before being mounted on the rim. ) Is Dm, and the diameter at the position Pt of the maximum width Wt (max) of the tire lumen is Dt, the following formula is used during assembly production: Dm / Dt = 0.90 to 1.00 This is a motorcycle tire and rim assembly that satisfies the relationship represented by:
【００１１】（４）前記（１）〜（３）のいずれかの自
動二輪車用のタイヤとリムの組み立て体において、前記
スポンジ状ムース体の発泡倍率が５００〜１５００％で
ある自動二輪車用のタイヤとリムの組み立て体である。
なお、ここで言う発泡倍率とは、固相部のゴム密度をｄ
0、発泡ゴムの密度をｄ1としたとき ｛（ｄ0／ｄ1）−１｝×１００ で表される値である。(4) The motorcycle tire according to any one of (1) to (3) above, wherein the foaming ratio of the sponge-like mousse is 500 to 1500%. And rim assembly.
Here, the expansion ratio is defined as the rubber density of the solid phase portion being d.
0 , when the density of the foamed rubber is d 1 , a value represented by {(d 0 / d 1 ) −1} × 100.
【００１２】（５）前記（１）〜（４）のいずれかの自
動二輪車用のタイヤとリムの組み立て体において、車両
とライダー１名分の合計重量の１０〜２００％荷重の範
囲内で前記スポンジ状ムース体充填タイヤの縦撓み量を
測定したとき、前記タイヤと同一タイヤに空気を充填し
た場合に同一荷重範囲で同一撓み量とするためには、そ
の内圧が４０〜１２０ｋＰａに相当する自動二輪車用の
タイヤとリムの組み立て体である。(5) In the motorcycle tire and rim assembly according to any one of the above (1) to (4), the load is 10 to 200% of the total weight of the vehicle and one rider. When measuring the vertical deflection amount of the sponge-shaped mousse body-filled tire, when the same tire and the same tire are filled with air, in order to make the same deflection amount in the same load range, the internal pressure is automatically adjusted to 40 to 120 kPa. This is an assembly of tires and rims for motorcycles.
【００１３】（６）前記（１）〜（５）のいずれかの自
動二輪車用のタイヤとリムの組み立て体において、前記
スポンジ状ムース体のタイヤ軸方向断面形状が実質上円
形、楕円形、もしくは実質上前記タイヤ内腔と略同一形
状を有する自動二輪車用のタイヤとリムの組み立て体で
ある。(6) In the motorcycle tire / rim assembly according to any one of the above (1) to (5), the sponge-shaped mousse has a substantially circular, elliptical or axial cross-sectional shape in the tire axial direction. A tire and rim assembly for a motorcycle having substantially the same shape as the tire bore.
【００１４】（７）前記（１）〜（６）のいずれかの自
動二輪車用のタイヤとリムの組み立て体において、前記
ｄｍ／ｄｔ、Ｓｍ／Ｓｔ、Ｄｍ／Ｄｔのうち少なくとも
一つ以上の関係が、前記スポンジ状ムース体の製造後か
ら６か月以内の少なくとも一定期間において保持されて
いる自動二輪車用のタイヤとリムの組み立て体である。(7) In the motorcycle tire and rim assembly according to any one of (1) to (6), at least one of dm / dt, Sm / St, and Dm / Dt is related. Is an assembly of a tire and a rim for a motorcycle held for at least a certain period within six months after the production of the sponge-shaped mousse body.
【００１５】以下、前記（１）〜（７）の発明の作用効
果について説明する。 前記（１）の発明について 本発明においては、通常は空気を充填するタイヤ内腔の
内面全体に接して圧縮される、独立気泡を有するスポン
ジ状ムース体を緩衝体としてタイヤ内に充填することで
操縦安定性と乗り心地性を損なうことなくパンクの危険
性を大幅に減少させるものであり、特にはスポンジ状ム
ース体を最適寸度とすることによりタイヤのリム組み作
業を容易に行うことができるようにしたものである。即
ち、スポンジ状ムース体の径方向寸度について、前記ｄ
ｍ／ｄｔ比が組み立て体製造時において０．９０〜１．
００の範囲内にあることを要する。この比が０．９０よ
りも小さくなるとリム組み時にリム径とスポンジ状ムー
ス体内径との差が大きくなり作業性に劣り、またリム解
き時には、タイヤとリムの組み立て体の中にある該スポ
ンジ状ムース体がタイヤのビード部を内側から極めて強
く押圧するため、ビード落としの作業性に劣ることにな
る。一方、１．００よりも大きくなると、スポンジ状ム
ース体をタイヤ内腔部に収めてリムの組み込みを行う場
合にリムに組み込む前のスポンジ状ムース体の圧縮が大
きくなりリム組み作業性に劣るとともに、実車使用時の
操縦安定性および乗り心地性にも劣ることになる。The functions and effects of the inventions (1) to (7) will be described below. Regarding the invention of the above (1) In the present invention, a sponge-like mousse body having closed cells, which is normally compressed in contact with the entire inner surface of a tire cavity filled with air, is filled in the tire as a buffer. It greatly reduces the risk of puncture without impairing steering stability and ride comfort.Especially, by setting the sponge-like mousse body to the optimal size, tire rim assembly work can be easily performed It is like that. That is, regarding the radial dimension of the sponge-like mousse body,
The m / dt ratio is 0.90-1.
00 must be within the range. When this ratio is less than 0.90, the difference between the rim diameter and the sponge-like mousse body inner diameter becomes large when assembling the rim, resulting in poor workability. Since the moose body presses the bead portion of the tire extremely strongly from the inside, the workability of dropping the bead is inferior. On the other hand, when it is larger than 1.00, when the sponge-like mousse body is housed in the tire cavity and the rim is incorporated, the compression of the sponge-like mousse body before being incorporated into the rim becomes large, and the rim assembling workability becomes poor. In addition, the steering stability and the riding comfort when using the actual vehicle are inferior.
【００１６】前記（２）の発明について 圧縮されるスポンジ状ムース体とタイヤ内腔との断面積
の関係は、前記Ｓｍ／Ｓｔ比が組み立て体製造時におい
て１．０５〜１．２０の範囲にあることが好ましい。こ
の比が１．０５よりも小さくなると、十分な剛性を確保
できないことによる操縦安定性、乗り心地性の低下を招
くばかりでなく、タイヤビード部を内側から押圧するこ
とが不十分となり、リムの空転やリム擦れ摩耗、リム落
ちの危険性がある。一方、１．２０よりも大きくなる
と、スポンジ状ムース体の過圧縮による剛性の高まりに
より操縦安定性および乗り心地性が損なわれるばかりで
なく、リム組み／リム解きの作業性を著しく損なうこと
になる。Regarding the invention (2), the relationship between the cross-sectional area of the sponge-like mousse body to be compressed and the bore of the tire is such that the Sm / St ratio is in the range of 1.05 to 1.20 at the time of manufacturing the assembly. Preferably, there is. When the ratio is less than 1.05, not only the steering stability and the riding comfort are reduced due to the inability to secure sufficient rigidity, but also the tire bead portion is insufficiently pressed from the inside, and the There is a risk of slipping, rim abrasion, and rim falling. On the other hand, when it is larger than 1.20, not only the steering stability and the riding comfort are impaired due to the increase in rigidity due to the overcompression of the sponge-shaped mousse body, but also the rim assembling / unsealing workability is significantly impaired. .
【００１７】前記（３）の発明について 圧縮されるスポンジ状ムース体とタイヤ内径との最大幅
における直径の関係は、前記Ｄｍ／Ｄｔ比が組み立て体
製造時において０．９０〜１．００の範囲にあることが
好ましい。前記ｄｍ／ｄｔの関係と同様に、この比が
１．００より大きくなるとリム組みする前にスポンジ状
ムース体の圧縮度が大きくなり、一方、０．９０より小
さくなると、リム組みする時にスポンジ状ムース体のタ
イヤからのはみ出しが大きくなり、作業性に劣る。Regarding the invention of the above (3), the relationship between the diameter of the sponge-like mousse body to be compressed and the inner diameter of the tire at the maximum width is such that the Dm / Dt ratio is in the range of 0.90 to 1.00 when the assembly is manufactured. Is preferred. Similarly to the above relationship of dm / dt, if this ratio is larger than 1.00, the degree of compression of the sponge-shaped mousse increases before the rim is assembled. The mousse body protrudes from the tire, resulting in poor workability.
【００１８】前記（４）の発明について スポンジ状ムース体の発泡倍率は５００〜１５００％の
範囲に設定することが好ましい。この発泡倍率が５００
％より小さくなるとスポンジ状ムース体自体の剛性が高
くなり、作業性が悪化するだけでなく、実車走行時の操
縦安定性および乗り心地性が空気充填タイヤに対して著
しく損なわれる。一方、１５００％よりも大きくなると
スポンジ状ムース体の柔軟性は得られるものの、実車使
用時に十分な剛性が得られなくなる。また、発泡倍率が
大きくなるほど、製造後の寸度変化が大きく、製品とし
ての使用期間が短くなってしまうという問題がある。Regarding the invention (4), the expansion ratio of the sponge-like mousse body is preferably set in the range of 500 to 1500%. This expansion ratio is 500
%, The rigidity of the sponge-like mousse itself increases, so that not only the workability is deteriorated, but also the steering stability and riding comfort during actual vehicle running are significantly impaired with respect to the pneumatic tire. On the other hand, if it is larger than 1500%, the sponge-like mousse body can have flexibility, but cannot have sufficient rigidity when used in an actual vehicle. In addition, there is a problem that as the expansion ratio increases, the dimensional change after production increases, and the use period as a product becomes shorter.
【００１９】前記（５）の発明について 空気使用の場合、不整地用タイヤは、内圧０．６〜１．
０ｋｇ／ｍ2（６０〜１００ｋＰａ）で使用するのが一
般的であるが、スポンジ状ムース体を用いた場合、その
特徴である低荷重でのソフト感および高荷重でのシッカ
リ感を撓み量で代弁すると、低荷重では低内圧（４０ｋ
Ｐａ）、高荷重では高内圧（１２０ｋＰａ）となる。Regarding the invention (5), when air is used, the tire for rough terrain has an internal pressure of 0.6 to 1.
Generally, it is used at 0 kg / m 2 (60 to 100 kPa). However, when a sponge-like mousse is used, the softness under a low load and the tightness under a high load, which are features of the sponge mousse, are determined by the amount of deflection. In other words, at low load, low internal pressure (40k
Pa), a high load results in a high internal pressure (120 kPa).
【００２０】前記（６）の発明について 上記のスポンジ状ムース体の最適寸度を実現するに適し
た断面形状である。Regarding the invention (6), the sponge-shaped mousse has a cross-sectional shape suitable for realizing the optimum dimensions.
【００２１】前記（７）の発明について スポンジ状ムース体は、発泡体のため、加硫後は常に寸
度が縮んでゆく傾向にある。従って、実際の使用に適す
る期間として本要件を満足することが必要となる。Regarding the invention of the above (7) The sponge-like mousse body is a foam, so that it tends to always shrink in size after vulcanization. Therefore, it is necessary to satisfy this requirement as a period suitable for actual use.
【００２２】[0022]
【発明の実施の形態】以下、本発明の一実施の形態を図
面に基づき説明する。図１に示す本発明の二輪車用のタ
イヤとリムの組み立て体は、タイヤ１と該タイヤ１をリ
ム組するリム５と、タイヤ１とリム５とが囲むタイヤ内
腔に配されるスポンジ状ムース体７とを具えている。DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. An assembly of a tire and a rim for a motorcycle according to the present invention shown in FIG. 1 includes a tire 1, a rim 5 for assembling the tire 1, and a sponge mousse disposed in a tire cavity surrounded by the tire 1 and the rim 5. And body 7.
【００２３】タイヤ１は、外周面にトレッドパターンを
形成したトレッド部２と、その両端からタイヤ半径方向
内方に向けてのびるサイドウォール部３と、該サイドウ
ォール部３の半径方向内側端に夫々位置する一対のビー
ド部４とを有する中空トロイダル状をなす。The tire 1 has a tread portion 2 having a tread pattern formed on the outer peripheral surface, a sidewall portion 3 extending inward in the tire radial direction from both ends thereof, and a radially inner end of the sidewall portion 3 at each of the tread portions 2. It has a hollow toroidal shape having a pair of bead portions 4 located thereon.
【００２４】リム５は、ビード部４の半径方向内側端に
形成されるビード底面が夫々着座する一対のビードシー
ト部６を接続したリング状をなす。本発明において、タ
イヤ１とリム５は、特に制限されるべきものではなく、
慣用に従い構造および材質を適宜選定すればよい。The rim 5 is formed in a ring shape by connecting a pair of bead seat portions 6 on which bead bottom surfaces formed at radially inner ends of the bead portions 4 are respectively seated. In the present invention, the tire 1 and the rim 5 are not particularly limited,
What is necessary is just to select a structure and a material suitably according to custom.
【００２５】タイヤ１とリム５とによって形成されるタ
イヤ内腔には、タイヤ１に圧力を付与し得るスポンジ状
ムース体７が配される。このスポンジ状ムース体７のリ
ム組み込み前のフリー状態での内径をｄｍ、前記タイヤ
のビードベース径をｄｔとしたとき、組み立て体製造時
において下記式、 ｄｍ／ｄｔ＝０．９０〜１．００ で表される関係を満足するようにする。また、スポンジ
状ムース体７のリム組み込み前のフリー状態での軸方向
断面の断面積をＳｍ、タイヤ内腔の軸方向断面の断面積
をＳｔとしたとき、組み立て体製造時において下記式、 Ｓｍ／Ｓｔ＝１．０５〜１．２０ で表される関係を満足することが好ましく、さらに、ス
ポンジ状ムース体７のリム組み込み前のフリー状態での
タイヤ軸方向断面最大幅Ｗｍ（ｍａｘ）の位置Ｐｍにお
ける直径をＤｍ、前記タイヤ内腔の最大幅Ｗｔ（ｍａ
ｘ）の位置Ｐｔにおける直径をＤｔとしたとき、組み立
て体製造時において下記式、 Ｄｍ／Ｄｔ＝０．９０〜１．００ で表される関係を満足することが好ましい。さらにま
た、車両とライダー１名分の合計重量（１６０〜１８０
ｋｇ）の１０〜２００％荷重の範囲内でスポンジ状ムー
ス体充填タイヤの縦撓み量を測定した場合、前記タイヤ
と同一タイヤに空気を充填した場合に同一荷重範囲で同
一撓み量とするためには、その内圧が４０〜１２０ｋＰ
ａに相当することが好ましい。かかる関係を満足し得る
限り、スポンジ状ムース体７のタイヤ軸を含む断面形状
は、円形、楕円形もしくは実質上前記タイヤ内腔に略類
似の形状を好適に採用することができる。A sponge-like mousse 7 capable of applying pressure to the tire 1 is provided in a tire bore formed by the tire 1 and the rim 5. Assuming that the inner diameter of the sponge-shaped mousse body 7 in a free state before being incorporated into the rim is dm, and the bead base diameter of the tire is dt, the following formula is used in manufacturing the assembly: dm / dt = 0.90 to 1.00 Satisfy the relationship represented by. Further, when the sectional area of the axial section in the free state of the sponge-shaped mousse body 7 before being mounted on the rim is Sm, and the sectional area of the axial section of the tire lumen is St, the following formula is used in manufacturing the assembly. /St=1.05 to 1.20, and the position of the maximum width Wm (max) in the tire axial direction cross section in the free state before the rim of the sponge-like mousse body 7 is assembled. The diameter at Pm is Dm, and the maximum width Wt (ma
Assuming that the diameter at the position Pt in x) is Dt, it is preferable to satisfy the relationship represented by the following formula at the time of manufacturing the assembly: Dm / Dt = 0.90 to 1.00. Furthermore, the total weight of the vehicle and one rider (160 to 180
kg) in the range of 10 to 200% load, the sponge-shaped mousse body-filled tire is measured for the amount of longitudinal deflection. When the same tire and the same tire are filled with air, the same amount of deflection is applied in the same load range. Has an internal pressure of 40 to 120 kP
It preferably corresponds to a. As long as such a relationship can be satisfied, the cross-sectional shape of the sponge-like mousse body 7 including the tire axis can be preferably a circle, an ellipse, or a shape substantially similar to the tire bore.
【００２６】スポンジ状ムース体７のゴム組成物は、天
然ゴムおよびジエン系合成ゴムからなる群より選ばれた
少なくとも１種のゴムを有することが好ましい。ジエン
系合成ゴムとしては、スチレン−ブタジエン共重合体、
シス−１，４−ポリイソプレン、シス−１，４−ポリブ
タジエン等が含まれる。かかるゴム組成物には発泡剤、
および必要に応じ発泡助剤を含め、上述の好適発泡倍率
５００〜１５００％を得ることができる。It is preferable that the rubber composition of the sponge-like mousse body 7 has at least one kind of rubber selected from the group consisting of natural rubber and diene-based synthetic rubber. As a diene-based synthetic rubber, a styrene-butadiene copolymer,
Cis-1,4-polyisoprene, cis-1,4-polybutadiene and the like are included. Such rubber composition has a foaming agent,
The above-mentioned suitable expansion ratio of 500 to 1500% can be obtained, including a foaming aid as required.
【００２７】発泡剤の例としては、ジニトロソペンタメ
チレンテトラアミン（ＤＰＴ）、アゾジカルボンアミド
（ＡＤＣＡ）、ジニトロソペンタスチレンテトラミンや
ベンゼンスフォニルヒドラジド誘導体、オキシビスベン
ゼンスルホニルヒドラジド（ＯＢＳＨ）等があるが、中
でもアゾジカルボンアミド（ＡＤＣＡ）が製造加工性を
考慮すると好ましい。Examples of the foaming agent include dinitrosopentamethylenetetraamine (DPT), azodicarbonamide (ADCA), dinitrosopentastyrenetetramine, benzenesulfonyl hydrazide derivative, oxybisbenzenesulfonyl hydrazide (OBSH) and the like. Among them, azodicarbonamide (ADCA) is particularly preferred in consideration of the manufacturing processability.
【００２８】発泡助剤としては、尿素、ステアリン酸亜
鉛、ベンゼンスルフィン酸亜鉛や亜鉛華等、通常発泡製
品の製造に用いられる助剤が好ましく適用される。な
お、発泡剤および発泡助剤は、前記のもの以外のものを
用いてもよい。As the foaming aid, auxiliaries usually used in the production of foamed products such as urea, zinc stearate, zinc benzenesulfinate and zinc white are preferably applied. The foaming agent and the foaming assistant may be other than those described above.
【００２９】また、かかるゴム組成物には、前記成分と
共に、カーボンブラック、シリカ、シランカップリング
剤、プロセスオイル、加硫剤、加硫促進剤等が併用さ
れ、これら以外にも、ゴム工業で通常使用されている老
化防止剤、酸化亜鉛、ステアリン酸、オゾン劣化防止剤
等の添加剤が配合可能である。Further, such a rubber composition may be used in combination with the above components together with carbon black, silica, a silane coupling agent, a process oil, a vulcanizing agent, a vulcanization accelerator, and the like. Additives such as antioxidants, zinc oxide, stearic acid and antiozonants which are commonly used can be blended.
【００３０】[0030]
【実施例】以下、本発明を実施例および比較例に基づき
説明する。自動二輪車のフロントタイヤとして、サイズ
９０／９０−２１、リム１．６０×２１のバイアスタイ
ヤを、またリアタイヤとして、サイズ１４０／８０−１
８、リム２．１５×１８のバイアスタイヤを夫々試作し
た（実施例１、２、３および比較例１、２）。また同様
に、フロントタイヤとして、サイズ８０／１００−２
１、リム１．６０×２１のバイアスタイヤを、またリア
タイヤとして、サイズ１１０／９０−１９、リム２．１
５×１９のバイアスタイヤを夫々試作した（実施例４、
５、６および比較例３〜５）。かかる供試タイヤに、表
１に示す条件を有するスポンジ状ムース体を夫々装填し
た。このスポンジ状ムース体のタイヤ軸を含む断面形状
は、円形とし、実質上タイヤ内面全体に接して圧縮され
てなる。The present invention will be described below with reference to examples and comparative examples. As a front tire of a motorcycle, a bias tire having a size of 90 / 90-21 and a rim of 1.60 × 21 is used. As a rear tire, a size of 140 / 80-1 is used.
8. A bias tire having a rim of 2.15 × 18 was prototyped (Examples 1, 2, and 3 and Comparative Examples 1 and 2). Similarly, as a front tire, size 80 / 100-2
1. A bias tire having a rim of 1.60 × 21 and a rear tire having a size of 110 / 90-19 and a rim of 2.1
Each of 5 × 19 bias tires was prototyped (Example 4,
5, 6 and Comparative Examples 3 to 5). Each of the test tires was loaded with a sponge-like mousse having the conditions shown in Table 1. The cross-sectional shape of the sponge-shaped mousse body including the tire shaft is circular, and is compressed substantially in contact with the entire inner surface of the tire.
【００３１】[0031]
【表１】 [Table 1]
【００３２】実施例１、２、３比較例１、２ 上記供試タイヤについて、エンデューロバイクを用いプ
ロのライダーによってエンデューロコースを走行し、実
車操縦安定性および乗り心地の評価を行った。また、か
かる供試タイヤについて、リム組み／リム解き作業性の
評価も行った。評価は、いずれも５段階評価を行い、数
字の大きい方が性能が良好であることを示す。なお、テ
スト時の評価基準として、上記タイヤにチューブを用い
て内圧８０ｋＰａを充填し、その評価点数をすべて３点
として評価した。得られた結果を下記の表２に示す。 Examples 1, 2 and 3 Comparative Examples 1 and 2 The test tires were run on an enduro course by a professional rider using an enduro bike to evaluate the driving stability and riding comfort of a real vehicle. The test tires were also evaluated for rim assembly / rim releasing workability. The evaluation was performed on a five-point scale, and the larger the number, the better the performance. In addition, as an evaluation criterion at the time of the test, the tire was filled with an internal pressure of 80 kPa using a tube, and all the evaluation points were evaluated as three points. The results obtained are shown in Table 2 below.
【００３３】[0033]
【表２】 [Table 2]
【００３４】実施例４、５、６比較例３〜５ 上記供試タイヤについて、モトクロスバイクを用いプロ
のライダーによってモトクロスコースを走行し、実車操
縦安定性および乗り心地の評価を行った。また、かかる
供試タイヤについて、リム組み／リム解き作業性の評価
も行った。評価は、いずれも５段階評価を行い、数字の
大きい方が性能が良好であることを示す。なお、テスト
時の評価基準として、上記タイヤにチューブを用いて内
圧８０ｋＰａを充填し、その評価点数をすべて３点とし
て評価した。得られた結果を下記の表３に示す。 Examples 4, 5, and 6 Comparative Examples 3 to 5 The test tires were run on a motocross course by a professional rider using a motocross motorcycle, and the operation stability and riding comfort of the actual vehicle were evaluated. The test tires were also evaluated for rim assembly / rim releasing workability. The evaluation was performed on a five-point scale, and the larger the number, the better the performance. In addition, as an evaluation criterion at the time of the test, the tire was filled with an internal pressure of 80 kPa using a tube, and all the evaluation points were evaluated as three points. The results obtained are shown in Table 3 below.
【００３５】[0035]
【表３】 [Table 3]
【００３６】[0036]
【発明の効果】実施例に示すように、本発明の組み立て
体においては、実車時の操縦安定性、乗り心地性を損な
うことなくパンクの発生防止が可能であるスポンジ状ム
ース体を使用することで、作業性を向上させることが可
能になった。As shown in the embodiments, in the assembly according to the present invention, a sponge-like mousse body capable of preventing occurrence of puncture without impairing steering stability and riding comfort in a real vehicle is used. Thus, workability can be improved.
【図１】本発明の一実施形態に係る自動二輪車用のタイ
ヤとリムの組み立て体の断面図である。FIG. 1 is a sectional view of an assembly of a tire and a rim for a motorcycle according to an embodiment of the present invention.
１ タイヤ ２ トレッド部 ３ サイドウォール部 ４ ビード部 ５ リム ６ ビードシート部 ７ スポンジ状ムース体 DESCRIPTION OF SYMBOLS 1 Tire 2 Tread part 3 Side wall part 4 Bead part 5 Rim 6 Bead seat part 7 Sponge mousse body
Claims (7)
と、該タイヤと該リムとが囲むタイヤ内腔に装填されて
実質上タイヤ内面全体に接して圧縮される、タイヤ周方
向に環状かつ独立気泡を有するスポンジ状ムース体と、
を具備する自動二輪車用のタイヤとリムの組み立て体に
おいて、 前記スポンジ状ムース体のリム組み込み前のフリー状態
での内径をｄｍ、前記タイヤのビードベース径をｄｔと
したとき、組み立て体製造時において下記式、 ｄｍ／ｄｔ＝０．９０〜１．００ で表される関係を満足することを特徴とする自動二輪車
用のタイヤとリムの組み立て体。Claims: 1. A tire, a rim for assembling the tire, and a rim for assembling the tire, the tire being mounted in a tire cavity surrounded by the tire and the rim, being compressed substantially in contact with the entire inner surface of the tire, and being annular in the tire circumferential direction. A sponge-like mousse body having closed cells,
When the inner diameter of the sponge-like mousse body in a free state before the rim is assembled is dm, and the bead base diameter of the tire is dt, the assembly of the tire and the rim for a motorcycle comprising: An assembly of a tire and a rim for a motorcycle, which satisfies a relationship represented by the following formula: dm / dt = 0.90 to 1.00.
前のフリー状態での軸方向断面の断面積をＳｍ、前記タ
イヤ内腔の軸方向断面の断面積をＳｔとしたとき、組み
立て体製造時において下記式、 Ｓｍ／Ｓｔ＝１．０５〜１．２０ で表される関係を満足する請求項１記載の自動二輪車用
のタイヤとリムの組み立て体。2. When the cross-sectional area of the axial section of the sponge-shaped mousse body in a free state before the rim is incorporated is Sm, and the cross-sectional area of the axial section of the tire cavity is St, when manufacturing the assembly. The motorcycle tire and rim assembly according to claim 1, which satisfies a relationship represented by the following formula: Sm / St = 1.05 to 1.20.
前のフリー状態でのタイヤ軸方向断面最大幅Ｗｍ（ｍａ
ｘ）の位置Ｐｍにおける直径をＤｍ、前記タイヤ内腔の
最大幅Ｗｔ（ｍａｘ）の位置Ｐｔにおける直径をＤｔと
したとき、組み立て体製造時において下記式、 Ｄｍ／Ｄｔ＝０．９０〜１．００ で表される関係を満足する請求項１または２記載の自動
二輪車用のタイヤとリムの組み立て体。3. A maximum axial width Wm (ma) of the sponge-like mousse body in a free state before being mounted on a rim.
Assuming that the diameter at the position Pm of x) is Dm, and the diameter at the position Pt of the maximum width Wt (max) of the tire lumen is Dt, the following formula is used in manufacturing the assembly: Dm / Dt = 0.90 to 1. The tire / rim assembly for a motorcycle according to claim 1 or 2, which satisfies a relationship represented by 00.
００〜１５００％である請求項１〜３のうちいずれか一
項記載の自動二輪車用のタイヤとリムの組み立て体。4. The foaming ratio of the sponge-like mousse body is 5
The motorcycle tire and rim assembly according to any one of claims 1 to 3, which is 00 to 1500%.
〜２００％荷重の範囲内で前記スポンジ状ムース体充填
タイヤの縦撓み量を測定したとき、前記タイヤと同一タ
イヤに空気を充填した場合に同一荷重範囲で同一撓み量
とするためには、その内圧が４０〜１２０ｋＰａに相当
する請求項１〜４のうちいずれか一項記載の自動二輪車
用のタイヤとリムの組み立て体。5. The total weight of the vehicle and one rider is 10
When the longitudinal deflection of the sponge mousse body-filled tire is measured within the range of ~ 200% load, when the same tire and the same tire are filled with air, the same deflection is required in the same load range. An assembly of a tire and a rim for a motorcycle according to any one of claims 1 to 4, wherein the internal pressure corresponds to 40 to 120 kPa.
断面形状が実質上円形、楕円形、もしくは実質上前記タ
イヤ内腔と略同一形状を有する請求項１〜５のうちいず
れか一項記載の自動二輪車用のタイヤとリムの組み立て
体。6. The sponge-like mousse according to claim 1, wherein a cross-sectional shape in the tire axial direction of the sponge-like mousse is substantially circular, elliptical, or substantially the same as the tire bore. An assembly of tires and rims for motorcycles.
ｔのうち少なくとも一つ以上の関係が、前記スポンジ状
ムース体の製造後から６か月以内の少なくとも一定期間
において保持されている請求項１〜６のうちいずれか一
項記載の自動二輪車用のタイヤとリムの組み立て体。7. The dm / dt, Sm / St, Dm / D
The motorcycle according to any one of claims 1 to 6, wherein at least one relationship among t is maintained for at least a certain period within six months after the manufacture of the sponge-like mousse body. Tire and rim assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000226748A JP4489261B2 (en) | 1999-07-29 | 2000-07-27 | Tire and rim assembly for motorcycles |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21566299 | 1999-07-29 | ||
| JP11-215662 | 1999-07-29 | ||
| JP2000226748A JP4489261B2 (en) | 1999-07-29 | 2000-07-27 | Tire and rim assembly for motorcycles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001097003A true JP2001097003A (en) | 2001-04-10 |
| JP4489261B2 JP4489261B2 (en) | 2010-06-23 |
Family
ID=26520985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000226748A Expired - Lifetime JP4489261B2 (en) | 1999-07-29 | 2000-07-27 | Tire and rim assembly for motorcycles |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4489261B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007276621A (en) * | 2006-04-06 | 2007-10-25 | Bridgestone Corp | Tire-rim assembly |
| US7950427B2 (en) | 2004-03-22 | 2011-05-31 | Sumitomo Rubber Industries, Ltd. | Shock absorber loaded in inner cavity of tire enclosed by tire for two-wheeler and rim |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06127207A (en) * | 1992-10-13 | 1994-05-10 | Bridgestone Corp | Tire and rim assembly |
| JPH07186610A (en) * | 1993-12-24 | 1995-07-25 | Sumitomo Rubber Ind Ltd | Assemblage of tire to rim for two-wheeled vehicle |
| JPH08132817A (en) * | 1994-11-09 | 1996-05-28 | Nishikawa Rubber Co Ltd | Punkless tube |
| JP2001018610A (en) * | 1999-07-07 | 2001-01-23 | Bridgestone Corp | Assembled body with tire and rim of motor cycle |
| JP2001080310A (en) * | 1999-09-17 | 2001-03-27 | Bridgestone Corp | Tire-rim assembly for motorcycle |
-
2000
- 2000-07-27 JP JP2000226748A patent/JP4489261B2/en not_active Expired - Lifetime
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06127207A (en) * | 1992-10-13 | 1994-05-10 | Bridgestone Corp | Tire and rim assembly |
| JPH07186610A (en) * | 1993-12-24 | 1995-07-25 | Sumitomo Rubber Ind Ltd | Assemblage of tire to rim for two-wheeled vehicle |
| JPH08132817A (en) * | 1994-11-09 | 1996-05-28 | Nishikawa Rubber Co Ltd | Punkless tube |
| JP2001018610A (en) * | 1999-07-07 | 2001-01-23 | Bridgestone Corp | Assembled body with tire and rim of motor cycle |
| JP2001080310A (en) * | 1999-09-17 | 2001-03-27 | Bridgestone Corp | Tire-rim assembly for motorcycle |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7950427B2 (en) | 2004-03-22 | 2011-05-31 | Sumitomo Rubber Industries, Ltd. | Shock absorber loaded in inner cavity of tire enclosed by tire for two-wheeler and rim |
| JP2007276621A (en) * | 2006-04-06 | 2007-10-25 | Bridgestone Corp | Tire-rim assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4489261B2 (en) | 2010-06-23 |
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