JP3161191U - Pneumatic tires and bicycle wheels - Google Patents

Pneumatic tires and bicycle wheels Download PDF

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JP3161191U
JP3161191U JP2010003097U JP2010003097U JP3161191U JP 3161191 U JP3161191 U JP 3161191U JP 2010003097 U JP2010003097 U JP 2010003097U JP 2010003097 U JP2010003097 U JP 2010003097U JP 3161191 U JP3161191 U JP 3161191U
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rubber
tire
elastic
pneumatic tire
rim
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康二 新井
康二 新井
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株式会社カインズ
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Abstract

【課題】「刺さり物」によるパンクの防止効果が高く、「リム打ち」によるパンクの防止にも有効な空気入りタイヤと同タイヤを備えた自転車用車輪を提供する。【解決手段】空気充填用の中空部１１を有するタイヤ本体１における接地領域が肉厚５〜１５ｍｍの肉厚部１５とされている空気入りタイヤであり、肉厚部１５は、タイヤ本体１にゴム状弾性体３を埋め込むか、タイヤ本体１の内周面に沿ってゴム状弾性体３を設けることにより形成される。ゴム状弾性体３は、タイヤ本体１を形成するゴム材料と弾性率が同じか、それよりも弾性率が小さい加硫ゴム、熱可塑性エラストマ、弾性繊維、あるいは弾性発泡体からなり、その断面は三日月形とされる。【選択図】図１Provided are a pneumatic tire and a bicycle wheel provided with the same tire, which are highly effective in preventing puncture caused by “stabbed objects” and effective in preventing puncture caused by “rim hitting”. A pneumatic tire in which a ground contact region in a tire body 1 having a hollow portion 11 for air filling is a thick portion 15 having a thickness of 5 to 15 mm. The thick portion 15 is formed on the tire body 1. It is formed by embedding the rubber-like elastic body 3 or by providing the rubber-like elastic body 3 along the inner peripheral surface of the tire body 1. The rubber-like elastic body 3 is made of a vulcanized rubber, a thermoplastic elastomer, an elastic fiber, or an elastic foam having the same elastic modulus as that of the rubber material forming the tire body 1 or a smaller elastic modulus. The crescent shape. [Selection] Figure 1

Description

本考案は、空気入りタイヤに係わり、特にパンク防止効果に優れる空気入りタイヤと、そのタイヤを備えた自転車用車輪に関する。   The present invention relates to a pneumatic tire, and more particularly, to a pneumatic tire having an excellent puncture prevention effect and a bicycle wheel including the tire.

空気入りタイヤは、空気を充填するための中空部を有した断面Ｃ字形の形態であり、これにはゴム製タイヤ本体の中空部に空気を保持するべくチューブを装備したものと、チューブを用いずインナーライナと呼ばれるゴム層を設けたチューブレスタイヤとがあるが、自転車用では、接地領域（トレッド）の肉厚が３ｍｍ程度と薄いため、走行中に画鋲などを踏んだだけで、これが中空部まで達してパンクしてしまう。   The pneumatic tire has a C-shaped cross-section with a hollow portion for filling air, which includes a tube equipped with a tube to hold air in the hollow portion of the rubber tire body, and a tube. There are tubeless tires with rubber layers called inner liners, but for bicycles, the ground contact area (tread) is as thin as about 3 mm. It reaches up to punk.

又、「リム打ち」といって、タイヤ内の空気圧が低い状態で段差などに乗り上げたとき、チューブがリムに激しく打ち付けられてパンクすることもある。   In addition, “rim hitting” means that when the air pressure inside the tire is low, the tube is struck hard against the rim and punctured.

ここに、「リム打ち」によるパンクを防止するため、タイヤ本体の中空部にチューブのほか、中実の弾性リング体を設け、その弾性リング体がリム側に位置するようにしたタイヤが提案されている（例えば、特許文献１）。   Here, in order to prevent puncture due to “rim hitting”, a tire is proposed in which a solid elastic ring body is provided in addition to a tube in the hollow portion of the tire body so that the elastic ring body is positioned on the rim side. (For example, Patent Document 1).

特開平１１−２４５６１０号公報JP-A-11-245610

しかしながら、特許文献１に開示される空気入りタイヤは、タイヤ本体内においてリム側となる位置に弾性リング体を内蔵しただけであるから、「リム打ち」によるパンクを防止することはできても、画鋲などの「刺さり物」を接地領域で踏み付けることによるパンクを防止することはできない。   However, since the pneumatic tire disclosed in Patent Document 1 only has a built-in elastic ring body at a position on the rim side in the tire body, even if it is possible to prevent puncture due to “rim driving”, It is not possible to prevent punctures caused by stepping on a “stabbed object” such as a thumbtack in the ground area.

本考案は以上のような事情に鑑みて成されたものであり、その目的は「刺さり物」によるパンクの防止効果が高く、「リム打ち」によるパンクの防止にも有効な空気入りタイヤと同タイヤを備えた自転車用車輪を提供することにある。   The present invention has been made in view of the circumstances as described above, and its purpose is the same as that of a pneumatic tire which is highly effective in preventing puncture by “stabbed objects” and also effective in preventing puncture by “rim hitting”. The object is to provide a bicycle wheel with a tire.

上記目的を達成するため、本考案に係る空気入りタイヤは、空気充填用の中空部を有するタイヤ本体における接地領域が肉厚５〜１５ｍｍの肉厚部とされていることを特徴とする。   In order to achieve the above object, the pneumatic tire according to the present invention is characterized in that a ground contact region in a tire body having a hollow portion for air filling is a thick portion having a thickness of 5 to 15 mm.

又、前記肉厚部は、前記タイヤ本体にゴム状弾性体を埋め込むことにより形成されるか、あるいは、前記タイヤ本体の内周面に沿ってゴム状弾性体を設けることにより形成されていることを特徴とする。   Further, the thick portion is formed by embedding a rubber-like elastic body in the tire body, or is formed by providing a rubber-like elastic body along the inner peripheral surface of the tire body. It is characterized by.

加えて、前記ゴム状弾性体は、前記タイヤ本体を形成するゴム材料と弾性率が同じか、それよりも弾性率が小さい加硫ゴム、熱可塑性エラストマ、弾性繊維、あるいは弾性発泡体からなることを特徴とする。更に、前記ゴム状弾性体は、三日月形の断面を有していることを特徴とする。   In addition, the rubber-like elastic body is made of a vulcanized rubber, a thermoplastic elastomer, an elastic fiber, or an elastic foam having the same elastic modulus as that of the rubber material forming the tire body or a lower elastic modulus. It is characterized by. Further, the rubber-like elastic body has a crescent-shaped cross section.

又、本考案に係る自転車用車輪は、上記のような空気入りタイヤをリムに装着して構成される。   The bicycle wheel according to the present invention is configured by mounting the pneumatic tire as described above on a rim.

本考案に係る空気入りタイヤ、及び同タイヤをリムに装着した自転車用車輪によれば、タイヤ本体における接地領域が肉厚５〜１５ｍｍの肉厚部とされていることから、接地領域の肉厚が３ｍｍ程しかない従前の自転車用タイヤに比べ、「刺さり物」によるパンク防止効果が上がる。   According to the pneumatic tire according to the present invention and the bicycle wheel having the tire mounted on the rim, since the ground contact area in the tire body is a thick part having a thickness of 5 to 15 mm, the thickness of the ground contact area is Compared with conventional bicycle tires that have only about 3 mm, the puncture prevention effect of “stabbed objects” is improved.

又、肉厚部を形成するゴム状弾性体が、タイヤ本体を形成するゴム材料と弾性率が同じか、それよりも弾性率が小さい加硫ゴム、熱可塑性エラストマ、弾性繊維、あるいは弾性発泡体からなるものでは、そのゴム状弾性体によってタイヤ本体の弾性変形が阻害されず、それ故、タイヤ本体とチューブとによる高い衝撃吸収性を維持して自転車の乗り心地を損なわない。   Further, the rubber-like elastic body forming the thick portion has the same elastic modulus as that of the rubber material forming the tire body, or a vulcanized rubber, thermoplastic elastomer, elastic fiber, or elastic foam having a lower elastic modulus. Therefore, the elastic deformation of the tire body is not hindered by the rubber-like elastic body, and therefore, high shock absorption by the tire body and the tube is maintained and the riding comfort of the bicycle is not impaired.

加えて、チューブ内の空気圧が低下した状態で路上の段差に乗り上げた場合でも、チューブを挟んでリムに対向するゴム状弾性体がクッションとして働き、リムに対するチューブの激突を緩和するため、「リム打ち」によるパンクも防止することができる。   In addition, even when riding on a step on the road with the air pressure in the tube lowered, the rubber-like elastic body facing the rim across the tube acts as a cushion, reducing the impact of the tube against the rim. Puncture caused by “strike” can also be prevented.

又、ゴム状弾性体が三日月形の断面を有しているものでは、タイヤ本体の内面を段差のない曲面にして、その内面全体にチューブを良好に密着させることができる。   In addition, when the rubber-like elastic body has a crescent-shaped cross section, the inner surface of the tire body can be made a curved surface having no step, and the tube can be satisfactorily adhered to the entire inner surface.

本考案に係る空気入りタイヤの実施形態を示す断面図Sectional drawing which shows embodiment of the pneumatic tire which concerns on this invention ゴム状弾性体の一部を示す斜視図Perspective view showing a part of a rubber-like elastic body 本考案に係る空気入りタイヤの作用を示す説明図Explanatory drawing which shows the effect | action of the pneumatic tire which concerns on this invention 本考案に係る空気入りタイヤの変更例を示す断面図Sectional drawing which shows the example of a change of the pneumatic tire which concerns on this invention

以下、本考案を図面に基づいて詳しく説明する。図１において、Ｔは本考案に係る空気入りタイヤであり、係る空気入りタイヤＴは、自転車用にしてタイヤ本体１にチューブ２を内蔵して構成されている。   Hereinafter, the present invention will be described in detail with reference to the drawings. In FIG. 1, T is a pneumatic tire according to the present invention, and the pneumatic tire T is configured for a bicycle and includes a tube 2 in a tire body 1.

タイヤ本体１は、中空部１１を有する断面Ｃ字状のゴム製環状物で、開口部分の両側縁はリムＲに装着するべき幅広のビード部１２とされている。尚、チューブ２は無端のゴム製中空環状物で、その内部には所定圧の空気が充填される。そして、係るチューブ２はその内部に充填される空気の圧力により膨張し、タイヤ本体１の内面に密着しながら左右一対のビード部１２，１２をリムＲの凸条ｗに向けて押し広げる。このため、タイヤ本体１はリムＲの外周から外れることなく、リムＲに対して強固に装着される。   The tire body 1 is a rubber ring having a C-shaped cross section having a hollow portion 11, and both side edges of the opening portion are wide bead portions 12 to be attached to the rim R. The tube 2 is an endless rubber hollow annular body, and the inside thereof is filled with air of a predetermined pressure. And the tube 2 expand | swells by the pressure of the air with which the inside is filled, and pushes a pair of right and left bead parts 12 and 12 toward the ridge w of the rim R while being in close contact with the inner surface of the tire body 1. For this reason, the tire body 1 is firmly attached to the rim R without detaching from the outer periphery of the rim R.

又、本例において、タイヤ本体１は外層部１３と内層部１４との二層構造とされ、その内層部１４は外層部１３の内面に厚さ１ｍｍ程度のゴムシートを接着せしめて形成されている。特に、本考案によれば、タイヤ本体１の接地領域、すなわちトレッドパターンが形成されるトレッド部分が肉厚部１５として５〜１５ｍｍ、好ましくは１０〜１５ｍｍの肉厚とされている。   In this example, the tire body 1 has a two-layer structure including an outer layer portion 13 and an inner layer portion 14, and the inner layer portion 14 is formed by adhering a rubber sheet having a thickness of about 1 mm to the inner surface of the outer layer portion 13. Yes. In particular, according to the present invention, the ground contact area of the tire body 1, that is, the tread portion where the tread pattern is formed is 5 to 15 mm, preferably 10 to 15 mm, as the thick portion 15.

尚、肉厚部１５は、外層部１３と内層部１４を含めて一体成型することもできるが、本例ではタイヤ本体１とは別に、その接地領域で外層部１３と内層部１４との間にゴム状弾性体３を埋め込むことにより形成している。   The thick portion 15 can be integrally formed including the outer layer portion 13 and the inner layer portion 14, but in this example, separately from the tire body 1, between the outer layer portion 13 and the inner layer portion 14 in the ground contact region. It is formed by embedding a rubber-like elastic body 3 in the inner surface.

ゴム状弾性体３は、タイヤ本体１を形成するゴム材料と弾性率が同じか、それよりも弾性率が小さい加硫ゴム、ＳＢＳ（ポリスチレン−ポリブタジエン−ポリスチレン）やＳＩＳ（ポリスチレン−ポリイソプレン−ポリスチレン）などの熱可塑性エラストマ、スパンデックスなどの弾性繊維、又は弾性発泡体からなるものであり、その形態は図１および図２に示されるように、外周面３１が外層部１３の内面に沿う断面円弧状の凸面で、内周面３２が断面円弧状の凹面となる三日月形の断面を有する環状とされている。これによれば、タイヤ本体１の内面を段差のない曲面にして、その内面全体にチューブ２を良好に密着させることができる。   The rubber-like elastic body 3 is a vulcanized rubber, SBS (polystyrene-polybutadiene-polystyrene) or SIS (polystyrene-polyisoprene-polystyrene) having the same elastic modulus as that of the rubber material forming the tire body 1 or a smaller elastic modulus. ), Etc., and an elastic fiber such as spandex, or an elastic foam, and the form thereof is a cross-sectional circle in which the outer peripheral surface 31 is along the inner surface of the outer layer portion 13, as shown in FIGS. It is an arcuate convex surface and has an annular shape having a crescent-shaped cross section in which the inner peripheral surface 32 is a concave surface having a circular arc cross section. According to this, the inner surface of the tire body 1 can be a curved surface having no steps, and the tube 2 can be satisfactorily adhered to the entire inner surface.

尚、係るゴム状弾性体３は、タイヤ本体１の外層部１３とは別体の成型品として、外層部１３の内側に接着剤などで固着され、その上にタイヤ本体１の内層部１４となるゴムシートが貼り付けられることにより、外層部１３と内層部１４との間に埋め込まれるが、そのゴム状弾性体３として、例えば未加硫のゴムを外層部１３の内面に塗り、その後これを架橋させるようにしてもよいし、内層部１４を省略してゴム状弾性体３をタイヤ本体１の内周面に沿って設けるようにしてもよく、この場合にゴム状弾性体３はタイヤ本体１に固着してもよいし、単にタイヤ本体１内に嵌合するだけでもよい。   The rubber-like elastic body 3 is fixed to the inside of the outer layer portion 13 with an adhesive or the like as a molded product separate from the outer layer portion 13 of the tire body 1, and on the inner layer portion 14 of the tire body 1. The rubber sheet is embedded between the outer layer portion 13 and the inner layer portion 14, and as the rubber-like elastic body 3, for example, unvulcanized rubber is applied to the inner surface of the outer layer portion 13, and then May be cross-linked, or the inner layer portion 14 may be omitted and the rubber-like elastic body 3 may be provided along the inner peripheral surface of the tire body 1. In this case, the rubber-like elastic body 3 is a tire. It may be fixed to the main body 1 or simply fitted into the tire main body 1.

そして、以上のような空気入りタイヤＴをリムＲに装着した車輪（図示せぬハブ、及びハブとリムとを繋ぐスポーク又は円板を含む）を備える自転車によれば、チューブ２内の空気圧が低下した状態で路上の段差に乗り上げた場合でも、チューブ２を挟んでリムＲに対向するゴム状弾性体３がクッションとして働き、リムＲに対するチューブ２の激突を緩和するため、「リム打ち」によるパンクを防止することができる。   And according to the bicycle provided with a wheel (including a hub (not shown) and a spoke or a disk connecting the hub and the rim) with the pneumatic tire T as described above mounted on the rim R, the air pressure in the tube 2 is increased. Even when riding on a step on the road in a lowered state, the rubber-like elastic body 3 facing the rim R across the tube 2 acts as a cushion, and the crush of the tube 2 against the rim R is alleviated. Puncture can be prevented.

又、タイヤ本体１の接地領域がゴム状弾性体３を有して肉厚５〜１５ｍｍの肉厚部１５とされていることから、図３のように、走行中に踏み付けた画鋲Ｇなどが肉厚部１５とされる接地領域に突き刺さっても、その刺さり物が５ｍｍ以下であればチューブ２まで達せず、このため従前のタイヤに比べて「刺さり物」によるパンクも減らすことができる。   Further, since the ground contact area of the tire body 1 has a rubber-like elastic body 3 and is a thick portion 15 having a thickness of 5 to 15 mm, a thumbtack G or the like that is stepped on during traveling as shown in FIG. Even if the stabbed object is pierced into the ground contact area 15, the tube 2 cannot be reached if the stabbed object is 5 mm or less. Therefore, the puncture caused by the “stitched object” can be reduced as compared with the conventional tire.

加えて、ゴム状弾性体３が、タイヤ本体１を形成するゴム材料と弾性率が同じか、それよりも弾性率が小さい加硫ゴム、熱可塑性エラストマ、弾性繊維、又は弾性発泡体からなることから、これによってタイヤ本体１の弾性変形が阻害されず、それ故、タイヤ本体１とチューブ２とによる高い衝撃吸収性を維持して自転車の乗り心地を損なわない。   In addition, the rubber-like elastic body 3 is made of a vulcanized rubber, a thermoplastic elastomer, an elastic fiber, or an elastic foam having the same elastic modulus as that of the rubber material forming the tire body 1 or a lower elastic modulus. Therefore, the elastic deformation of the tire body 1 is not inhibited by this, and therefore, high shock absorption by the tire body 1 and the tube 2 is maintained and the riding comfort of the bicycle is not impaired.

以上、本考案に係る空気入りタイヤの好適な実施形態を説明したが、係る空気入りタイヤは上記のような構成に限らない。例えば、肉厚部１５の形成として、上記のようなタイヤ本体１とは別のゴム状弾性体３を用いるのでなく、図４のようにタイヤ本体１をこれと同種のゴム材料による肉厚部１５を含んだ一体成型物としてもよい。   As mentioned above, although preferred embodiment of the pneumatic tire which concerns on this invention was described, the pneumatic tire which concerns is not restricted to the above structures. For example, instead of using the rubber-like elastic body 3 different from the tire main body 1 as described above for forming the thick portion 15, the tire main body 1 is made of the same kind of rubber material as shown in FIG. 15 may be an integrally molded product.

又、係る空気入りタイヤは、チューブ２を有する構成に限らず、チューブレスタイヤとすることもできる。   In addition, the pneumatic tire is not limited to the configuration having the tube 2 and may be a tubeless tire.

１ タイヤ本体
１１ 中空部
１２ ビード部
１３ 外層部
１４ 内層部
１５ 肉厚部
２ チューブ
３ ゴム状弾性体
Ｔ 空気入りタイヤ
Ｒ リム DESCRIPTION OF SYMBOLS 1 Tire main body 11 Hollow part 12 Bead part 13 Outer layer part 14 Inner layer part 15 Thick part 2 Tube 3 Rubber-like elastic body T Pneumatic tire R Rim

Claims (6)

空気充填用の中空部を有するタイヤ本体における接地領域が肉厚５〜１５ｍｍの肉厚部とされていることを特徴とする空気入りタイヤ。 A pneumatic tire characterized in that a ground contact region in a tire body having a hollow portion for air filling is a thick portion having a thickness of 5 to 15 mm. 前記肉厚部は、前記タイヤ本体にゴム状弾性体を埋め込むことにより形成されていることを特徴とする請求項１記載の空気入りタイヤ。 The pneumatic tire according to claim 1, wherein the thick portion is formed by embedding a rubber-like elastic body in the tire body. 前記肉厚部は、前記タイヤ本体の内周面に沿ってゴム状弾性体を設けることにより形成されていることを特徴とする請求項１記載の空気入りタイヤ。 The pneumatic tire according to claim 1, wherein the thick portion is formed by providing a rubber-like elastic body along an inner peripheral surface of the tire body. 前記ゴム状弾性体は、前記タイヤ本体を形成するゴム材料と弾性率が同じか、それよりも弾性率が小さい加硫ゴム、熱可塑性エラストマ、弾性繊維、あるいは弾性発泡体からなることを特徴とする請求項２、又は３記載の空気入りタイヤ。 The rubber-like elastic body is made of a vulcanized rubber, a thermoplastic elastomer, an elastic fiber, or an elastic foam having the same elastic modulus as that of the rubber material forming the tire body or a lower elastic modulus. The pneumatic tire according to claim 2 or 3. 前記ゴム状弾性体は、三日月形の断面を有していることを特徴とする請求項２〜４のいずれか１項に記載の空気入りタイヤ。 The pneumatic tire according to any one of claims 2 to 4, wherein the rubber-like elastic body has a crescent-shaped cross section. 請求項１〜５のいずれか１項に記載の空気入りタイヤをリムに装着した自転車用車輪。 A bicycle wheel having the pneumatic tire according to any one of claims 1 to 5 mounted on a rim.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI624384B (en) * 2014-12-11 2018-05-21 He Mu Chang Explosion-proof tire, anti-puncture tire structure improvement
CN113085447A (en) * 2021-03-29 2021-07-09 南京航空航天大学 Safety tyre

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI624384B (en) * 2014-12-11 2018-05-21 He Mu Chang Explosion-proof tire, anti-puncture tire structure improvement
CN113085447A (en) * 2021-03-29 2021-07-09 南京航空航天大学 Safety tyre

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