JP2013095187A - Tire - Google Patents

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JP2013095187A
JP2013095187A JP2011237370A JP2011237370A JP2013095187A JP 2013095187 A JP2013095187 A JP 2013095187A JP 2011237370 A JP2011237370 A JP 2011237370A JP 2011237370 A JP2011237370 A JP 2011237370A JP 2013095187 A JP2013095187 A JP 2013095187A
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tread
rubber
tire
color
radial direction
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JP5847539B2 (en
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Koyo Kiwaki
幸洋 木脇
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Bridgestone Corp
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Bridgestone Corp
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Abstract

PROBLEM TO BE SOLVED: To provide a tire which enables a driver and the like to more reliably recognize progress conditions of tire wear when the progress conditions of the tire wear are indicated by a change in tread surface color.SOLUTION: The pneumatic tire 10 includes a color rubber 120 which configures a part of a tread 20 and which has a color different from a color of other parts of the tread. The color rubber 120 is continuously provided in the circumferential direction Dof the tire, and provided in a predetermined area on the inside in the radial direction DR of the tire with respect to the wheel tread of the tread 20. The color rubber 120 becomes wider in the width direction of the tread toward the inside in the radial direction Dof the tire, in a cross-section along the width direction Dof the tread and the radial direction Dof the tire.

Description

本発明は、トレッド表面の色が変化することによってタイヤの摩耗の進行状況を運転者などに認識させるタイヤに関する。   The present invention relates to a tire that allows a driver or the like to recognize the progress of tire wear by changing the color of a tread surface.

従来、自動車などに装着される空気入りタイヤ（以下、タイヤ）では、タイヤの摩耗の進行状況を容易に認識させるため、異なる色に着色された複数の層でトレッドゴムを形成したタイヤが知られている（例えば、特許文献１）。   Conventionally, in a pneumatic tire (hereinafter referred to as a tire) mounted on an automobile or the like, a tire in which a tread rubber is formed of a plurality of layers colored in different colors is known in order to easily recognize the progress of tire wear. (For example, Patent Document 1).

このようなタイヤによれば、タイヤの摩耗が進行するに連れてトレッド表面の色が変化するため、当該自動車の運転者などは、タイヤの残溝を測定するデプスゲージなどを用いることなく、タイヤの摩耗の進行状況、つまり、溝の減り具合を認識できる。   According to such a tire, since the color of the tread surface changes as the wear of the tire progresses, the driver of the automobile or the like can use the tire without using a depth gauge that measures the remaining groove of the tire. It is possible to recognize the progress of wear, that is, how the groove is reduced.

特開平１１−２４５６２０号公報（第１図）Japanese Patent Laid-Open No. 11-245620 (FIG. 1)

しかしながら、上述した従来のタイヤには、次のような問題があった。すなわち、タイヤの摩耗の進行に連れてトレッド表面の色が変化しても、運転者などは、そのようなトレッド表面の色の変化を依然として見落としてしまう場合がある。   However, the conventional tire described above has the following problems. That is, even if the color of the tread surface changes as the wear of the tire progresses, the driver or the like may still overlook such a change in the color of the tread surface.

そこで、本発明は、このような状況に鑑みてなされたものであり、トレッド表面の色が変化することによってタイヤの摩耗の進行状況を示す場合において、より確実に当該状況を運転者などに認識させることができるタイヤの提供を目的とする。   Therefore, the present invention has been made in view of such a situation, and when the progress of tire wear is indicated by a change in the color of the tread surface, the situation is more reliably recognized by the driver or the like. An object of the present invention is to provide a tire that can be used.

本発明の特徴は、トレッド（トレッド20）の一部を構成し、前記トレッドの他の部分と異なる色を有するトレッドゴム（カラーゴム120）を備えたタイヤ（空気入りタイヤ10）であって、前記トレッドゴムは、タイヤ周方向（タイヤ周方向DC）において連続して設けられるとともに、前記トレッドの踏面よりもタイヤ径方向内側の所定領域に設けられ、前記トレッドゴムは、トレッド幅方向（トレッド幅方向DT）及びタイヤ径方向（タイヤ径方向DR）に沿った断面において、タイヤ径方向内側に行くに連れて、トレッド幅方向における幅が広くなることを要旨とする。 A feature of the present invention is a tire (pneumatic tire 10) including a tread rubber (color rubber 120) that constitutes a part of the tread (tread 20) and has a different color from the other parts of the tread. The tread rubber is provided continuously in the tire circumferential direction (tire circumferential direction D C ), and is provided in a predetermined region inside the tire radial direction with respect to the tread surface of the tread. The tread rubber is provided in the tread width direction (tread). The gist is that in the cross section along the tire width direction D T ) and the tire radial direction (tire radial direction D R ), the width in the tread width direction becomes wider toward the inner side in the tire radial direction.

本発明の特徴によれば、トレッド表面の色が変化することによってタイヤの摩耗の進行状況を示す場合において、より確実に当該状況を運転者などに認識させることができるタイヤを提供することができる。   According to the features of the present invention, when the progress of tire wear is indicated by a change in the color of the tread surface, it is possible to provide a tire that allows a driver or the like to recognize the situation more reliably. .

本発明の実施形態に係る空気入りタイヤ10の概略構成図である。1 is a schematic configuration diagram of a pneumatic tire 10 according to an embodiment of the present invention. 本発明の実施形態に係る被覆ゴム110が摩耗し、カラーゴム120が露出した空気入りタイヤ10の状態を示す図である。1 is a view showing a state of a pneumatic tire 10 in which a coated rubber 110 according to an embodiment of the present invention is worn and a color rubber 120 is exposed. 本発明の実施形態に係るカラーゴム120が摩耗し、中間ゴム130が露出した空気入りタイヤ10の状態を示す図である。1 is a view showing a state of a pneumatic tire 10 in which a color rubber 120 according to an embodiment of the present invention is worn and an intermediate rubber 130 is exposed.

次に、本発明に係るタイヤ（空気入りタイヤ）の実施形態について、図面を参照しながら説明する。なお、以下の図面の記載において、同一または類似の部分には、同一または類似の符号を付している。ただし、図面は模式的なものであり、各寸法の比率などは現実のものとは異なることに留意すべきである。   Next, an embodiment of a tire (pneumatic tire) according to the present invention will be described with reference to the drawings. In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals. However, it should be noted that the drawings are schematic and ratios of dimensions and the like are different from actual ones.

したがって、具体的な寸法などは以下の説明を参酌して判断すべきである。また、図面相互間においても互いの寸法の関係や比率が異なる部分が含まれ得る。   Accordingly, specific dimensions and the like should be determined in consideration of the following description. Moreover, the part from which the relationship and ratio of a mutual dimension differ also in between drawings may be contained.

（１）タイヤの概略構成
図１（ａ）及び図１（ｂ）は、本実施形態に係る空気入りタイヤ10の概略構成図である。また、図１（ｂ）は、空気入りタイヤ10のトレッド幅方向における概略断面図である。なお、図１（ａ）及び図１（ｂ）では、空気入りタイヤ10のトレッドパターンの一部のみが示されていることに留意されたい。また、空気入りタイヤ10には、空気に代えて窒素ガスなどの不活性ガスを充填してもよい。 (1) Schematic Configuration of Tire FIGS. 1A and 1B are schematic configuration diagrams of a pneumatic tire 10 according to the present embodiment. FIG. 1B is a schematic cross-sectional view of the pneumatic tire 10 in the tread width direction. It should be noted that only a part of the tread pattern of the pneumatic tire 10 is shown in FIGS. 1 (a) and 1 (b). Further, the pneumatic tire 10 may be filled with an inert gas such as nitrogen gas instead of air.

図１（ａ）及び図１（ｂ）に示すように、空気入りタイヤ10は、路面に接地するトレッド20を有する。また、トレッド20には、タイヤ周方向DCに延びる周方向溝30が形成される。 As shown in FIGS. 1A and 1B, the pneumatic tire 10 has a tread 20 that comes in contact with the road surface. Further, in the tread 20, circumferential grooves 30 extending in the tire circumferential direction D C is formed.

本実施形態では、周方向溝30内には、周方向溝30の溝底30aから突出した突出部100が設けられる。   In the present embodiment, a protrusion 100 that protrudes from the groove bottom 30 a of the circumferential groove 30 is provided in the circumferential groove 30.

突出部100の頂部は、タイヤ径方向DRにおいて、トレッド20の踏面と略同一の高さ位置に設けられる。 Top of the projecting portion 100, in the tire radial direction D R, provided tread substantially the same height position of the tread 20.

図１（ｂ）に示すように、空気入りタイヤ10の突出部100は、被覆ゴム110、カラーゴム120及び中間ゴム130によって構成される。   As shown in FIG. 1B, the protruding portion 100 of the pneumatic tire 10 is constituted by a covering rubber 110, a color rubber 120, and an intermediate rubber 130.

被覆ゴム110は、カラーゴム120を被覆する。つまり、被覆ゴム110は、カラーゴム120の表面側に設けられる薄いゴム層である。被覆ゴム110は、トレッド20の他の部分と同一の色（黒色）を有する。   The covering rubber 110 covers the color rubber 120. That is, the covering rubber 110 is a thin rubber layer provided on the surface side of the color rubber 120. The covering rubber 110 has the same color (black) as the other parts of the tread 20.

カラーゴム120（トレッドゴム）は、トレッド20の一部を構成し、トレッド20の他の部分と異なる色を有する。具体的には、カラーゴム120には、例えば、白色や赤色に着色されたカラーゴムが用いられる。また、トレッド20の他の部分は、一般的な空気入りタイヤと同様に黒色のゴムが用いられる。なお、カラーゴム120の色は、トレッド20の他の部分と異なる色、つまり、黒色以外であれば特に限定されないが、カラーゴム120の視認性を向上させる観点から、白、赤、黄及び緑などが好ましい。   The color rubber 120 (tread rubber) constitutes a part of the tread 20 and has a different color from the other parts of the tread 20. Specifically, for the color rubber 120, for example, a color rubber colored white or red is used. Further, black rubber is used for the other portions of the tread 20 as in a general pneumatic tire. The color of the color rubber 120 is not particularly limited as long as it is a color different from other parts of the tread 20, that is, other than black. From the viewpoint of improving the visibility of the color rubber 120, white, red, yellow and green Etc. are preferable.

カラーゴム120は、突出部100の一部として用いられる。図１（ｂ）に示すように、カラーゴム120は、トレッド20の踏面よりもタイヤ径方向DR内側の所定領域に設けられ、タイヤ径方向DR内側に行くに連れて、トレッド幅方向DTにおける幅が広くなる。 The color rubber 120 is used as a part of the protrusion 100. As shown in FIG. 1 (b), color rubber 120 is provided in the tire radial direction D R inner predetermined area than the tread of the tread 20, as the going in the tire radial direction D R inward, in the tread width direction D The width at T becomes wider.

また、カラーゴム120のタイヤ径方向DR内側には、中間ゴム130が設けられる。具体的には、中間ゴム130は、カラーゴム120のタイヤ径方向DRにおける中間部に配置される。中間ゴム130は、トレッド20及びカラーゴム120と異なる色を有する。なお、被覆ゴム110及び中間ゴム130の厚さは、0.5mm〜2mm程度が好ましい。また、被覆ゴム110でカラーゴム120を覆うことによって、老化防止剤が移行してカラーゴム120が変色することを抑制できる。被覆ゴム110としては、酸素透過性の低いゴム、好ましくはブチルゴムを用いることができる。 Further, in the tire radial direction D R inner collar rubber 120, the intermediate rubber 130 is provided. Specifically, the intermediate rubber 130 is disposed intermediate portion in the tire radial direction D R of the collar rubber 120. The intermediate rubber 130 has a color different from that of the tread 20 and the color rubber 120. The thickness of the covering rubber 110 and the intermediate rubber 130 is preferably about 0.5 mm to 2 mm. Further, by covering the color rubber 120 with the covering rubber 110, it is possible to prevent the color rubber 120 from being discolored due to the migration of the anti-aging agent. As the covering rubber 110, a rubber having low oxygen permeability, preferably butyl rubber can be used.

（２）トレッドゴムの摩耗の進行によるトレッドゴム色の変化
次に、図２及び図３を参照して、上述したトレッドゴム（カラーゴム120）の摩耗の進行による突出部100のトレッドゴム色の変化について説明する。なお、図２（ｂ）及び図３（ｂ）では、新品時の空気入りタイヤ10の形状が２点鎖線で示されている。 (2) Change in tread rubber color due to progress of wear of tread rubber Next, referring to FIG. 2 and FIG. 3, the tread rubber color of the protrusion 100 due to the progress of wear of the tread rubber (color rubber 120) described above will be described. The change will be described. 2 (b) and 3 (b), the shape of the pneumatic tire 10 when new is shown by a two-dot chain line.

図２（ａ）及び図２（ｂ）は、被覆ゴム110が摩耗し、カラーゴム120が露出した状態を示す。図３（ａ）及び図３（ｂ）は、さらに摩耗が進行した状態、具体的にはカラーゴム120が摩耗し、中間ゴム130が露出した状態を示す。   FIG. 2A and FIG. 2B show a state where the covering rubber 110 is worn and the color rubber 120 is exposed. FIGS. 3A and 3B show a state where the wear has further progressed, specifically, a state where the color rubber 120 is worn and the intermediate rubber 130 is exposed.

図２及び図３に示すように、被覆ゴム110が摩耗した時点では、カラーゴム120が露出するため、突出部100の頂部全体が所定の色（例えば、赤色）に着色された状態として、運転者などに視認される（図２参照）。   As shown in FIGS. 2 and 3, since the color rubber 120 is exposed when the covering rubber 110 is worn, the entire top of the protrusion 100 is colored in a predetermined color (for example, red). (See FIG. 2).

また、さらに摩耗が進行すると、突出部100の頂部において中間ゴム130が露出する。中間ゴム130は、によって、トレッド20及びカラーゴム120と異なる色を有するため、突出部100の頂部全体が所定の色（例えば、黄色）に着色された状態として、運転者などに視認される（図３参照）。   Further, when the wear further proceeds, the intermediate rubber 130 is exposed at the top of the protrusion 100. Since the intermediate rubber 130 has a color different from that of the tread 20 and the color rubber 120, the entire top of the protruding portion 100 is visually recognized by a driver or the like as being in a predetermined color (for example, yellow) ( (See FIG. 3).

（３）作用・効果
空気入りタイヤ10によれば、カラーゴム120は、トレッド幅方向DT及びタイヤ径方向DRに沿った断面（図２（ｂ）及び図３（ｂ）参照）において、タイヤ径方向DR内側に行くに連れて、トレッド幅方向DTにおける幅が変化、具体的には、カラーゴム120のトレッド幅方向DTにおける幅が広くなるため、空気入りタイヤ10の摩耗の進行に伴って、カラーゴム120が露出するだけでなく、カラーゴム120の幅が広くなる。 (3) Action / Effect According to the pneumatic tire 10, the color rubber 120 has a cross section along the tread width direction D T and the tire radial direction D R (see FIG. 2B and FIG. 3B). As the going in the tire radial direction D R inner width in the tread width direction D T is changed, specifically, the width in the tread width direction D T of the collar rubber 120 is widened, the wear of the pneumatic tire 10 As the process progresses, not only the color rubber 120 is exposed, but the width of the color rubber 120 becomes wider.

このため、トレッド20表面の色が変化することによって空気入りタイヤ10の摩耗の進行状況を示す場合において、より確実に当該状況を運転者などに認識させることができる。特に、摩耗の進行に伴ってカラーゴム120の幅も変化するため、色覚が正常でない運転者なども、摩耗の進行状況をより確実かつ容易に認識できる。   For this reason, in the case where the progress of the wear of the pneumatic tire 10 is indicated by the change in the color of the surface of the tread 20, the driver or the like can be more surely recognized. In particular, as the wear progresses, the width of the color rubber 120 also changes, so that a driver with abnormal color vision can recognize the progress of wear more reliably and easily.

また、本実施形態ではカラーゴム120は、周方向溝30の溝底30aから突出した突出部100に用いられる。このため、カラーゴム120の損傷や汚れを抑制しつつ、摩耗の進行状況を運転者などに容易に認識させることができる。   In the present embodiment, the color rubber 120 is used for the protruding portion 100 protruding from the groove bottom 30a of the circumferential groove 30. This makes it possible for the driver or the like to easily recognize the progress of wear while suppressing damage and contamination of the color rubber 120.

本実施形態では、カラーゴム120は、溝底30aよりもタイヤ径方向DR外側に設けられる。このため、さらに摩耗が進行した場合には、カラーゴム120が消失することによって、空気入りタイヤ10が使用限界に近づいていることを運転者などに容易に認識させることができる。 In the present embodiment, color rubber 120 is provided in the tire radial direction D R outward from the groove bottom 30a. Therefore, when the wear further progresses, the color rubber 120 disappears, so that the driver or the like can easily recognize that the pneumatic tire 10 is approaching the use limit.

本実施形態では、トレッドゴムのタイヤ径方向における中間部にトレッド20及びカラーゴム120と異なる色を有する中間ゴム130が配置されるため、中間ゴム130が露出することによって、空気入りタイヤ10の摩耗がさらに進行したことを転者などに容易に認識させることができる。   In the present embodiment, since the intermediate rubber 130 having a color different from that of the tread 20 and the color rubber 120 is disposed in an intermediate portion in the tire radial direction of the tread rubber, the wear of the pneumatic tire 10 is caused by the exposure of the intermediate rubber 130. It is possible to make it easier for a transferee to recognize that the process has further progressed.

本実施形態では、カラーゴム120を被覆する被覆ゴム110が備えられるため、空気入りタイヤ10の新品時においては、通常の空気入りタイヤと何ら変わらない外見を提供でき、また、被覆ゴム110が摩耗することによってカラーゴム120が露出するため、摩耗の進行を細かく知らしめることができる。   In the present embodiment, since the covering rubber 110 that covers the color rubber 120 is provided, when the pneumatic tire 10 is new, an appearance that is not different from a normal pneumatic tire can be provided, and the covering rubber 110 is worn. By doing so, the color rubber 120 is exposed, so that the progress of wear can be informed in detail.

（４）その他の実施形態
上述したように、本発明の実施形態を通じて本発明の内容を開示したが、この開示の一部をなす論述及び図面は、本発明を限定するものであると理解すべきではない。この開示から当業者には様々な代替実施の形態、実施例及び運用技術が明らかとなる。 (4) Other Embodiments As described above, the contents of the present invention have been disclosed through the embodiments of the present invention. However, it is understood that the descriptions and drawings constituting a part of this disclosure limit the present invention. Should not. From this disclosure, various alternative embodiments, examples, and operational techniques will be apparent to those skilled in the art.

例えば、上述した実施形態では、被覆ゴム110や中間ゴム130が備えられていたが、被覆ゴム110や中間ゴム130は、必ずしも設けられていなくても構わない。また、カラーゴム120が備えられる位置は、必ずしも周方向溝30でなくてもよく、例えば、陸部ブロックの一部としてもよい。   For example, in the above-described embodiment, the covering rubber 110 and the intermediate rubber 130 are provided. However, the covering rubber 110 and the intermediate rubber 130 are not necessarily provided. Further, the position where the color rubber 120 is provided is not necessarily the circumferential groove 30, and may be a part of a land block, for example.

このように、本発明は、ここでは記載していない様々な実施の形態などを含むことは勿論である。したがって、本発明の技術的範囲は、上述の説明から妥当な特許請求の範囲に係る発明特定事項によってのみ定められる。   As described above, the present invention naturally includes various embodiments that are not described herein. Therefore, the technical scope of the present invention is determined only by the invention specifying matters according to the scope of claims reasonable from the above description.

10…空気入りタイヤ
20…トレッド
30…周方向溝
100…突出部
110…被覆ゴム
120…カラーゴム
130…中間ゴム 10 ... Pneumatic tire
20 ... tread
30 ... Circumferential groove
100 ... Projection
110… Coated rubber
120 ... Color rubber
130 ... Intermediate rubber

Claims (5)

トレッドの一部を構成し、前記トレッドの他の部分と異なる色を有するトレッドゴムを備えたタイヤであって、
前記トレッドゴムは、タイヤ周方向において連続して設けられるとともに、前記トレッドの踏面よりもタイヤ径方向内側の所定領域に設けられ、
前記トレッドゴムは、トレッド幅方向及びタイヤ径方向に沿った断面において、タイヤ径方向内側に行くに連れて、トレッド幅方向における幅が広くなるタイヤ。 A tire comprising a tread rubber constituting a part of the tread and having a color different from that of the other part of the tread,
The tread rubber is continuously provided in the tire circumferential direction, and is provided in a predetermined region inside the tire radial direction from the tread surface of the tread.
In the cross section along the tread width direction and the tire radial direction, the tread rubber is a tire whose width in the tread width direction becomes wider toward the inner side in the tire radial direction. 前記トレッドゴムは、タイヤ周方向に延びる周方向溝の溝底から突出した突出部に備えられる請求項１記載のタイヤ。   2. The tire according to claim 1, wherein the tread rubber is provided in a protruding portion protruding from a groove bottom of a circumferential groove extending in a tire circumferential direction. 前記トレッドゴム被覆する被覆ゴムをさらに備え、
前記被覆ゴムは、前記トレッドの他の部分と同一の色を有する請求項２に記載のタイヤ。 Further comprising a covering rubber for covering the tread rubber,
The tire according to claim 2, wherein the covering rubber has the same color as other portions of the tread. 前記トレッドゴムは、前記溝底よりもタイヤ径方向外側に設けられる請求項２に記載のタイヤ。   The tire according to claim 2, wherein the tread rubber is provided on the outer side in the tire radial direction from the groove bottom. 前記トレッド及び前記トレッドゴムと異なる色を有する中間ゴムをさらに備え、
前記中間ゴムは、前記トレッドゴムのタイヤ径方向における中間部に配置される請求項２に記載のタイヤ。 An intermediate rubber having a different color from the tread and the tread rubber;
The tire according to claim 2, wherein the intermediate rubber is disposed at an intermediate portion of the tread rubber in the tire radial direction.
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JPH0285603U (en) * 1988-12-22 1990-07-05
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JP3067056U (en) * 1998-06-10 2000-03-21 昌広 山本 Tire wear recognition device
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KR102553383B1 (en) * 2021-06-07 2023-07-10 넥센타이어 주식회사 Tire wear notification device

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