JP3164877B2 - Pneumatic tire - Google Patents
Pneumatic tireInfo
- Publication number
- JP3164877B2 JP3164877B2 JP09815292A JP9815292A JP3164877B2 JP 3164877 B2 JP3164877 B2 JP 3164877B2 JP 09815292 A JP09815292 A JP 09815292A JP 9815292 A JP9815292 A JP 9815292A JP 3164877 B2 JP3164877 B2 JP 3164877B2
- Authority
- JP
- Japan
- Prior art keywords
- groove
- edge
- buttress
- axial direction
- tread
- 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.)
- Expired - Fee Related
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
- B60C11/03—Tread patterns
- B60C11/12—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes
- B60C11/1204—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes with special shape of the sipe
- B60C2011/1213—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes with special shape of the sipe sinusoidal or zigzag at the tread surface
Landscapes
- Tires In General (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、空気入りタイヤに係
り、特に、ショルダブロックの形状を改善することで雪
路、泥ねい路等におけるワンダリング性能を確保しかつ
トラクション性能を向上したものに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pneumatic tire, and more particularly to a pneumatic tire in which the shape of a shoulder block is improved so as to secure wandering performance on snowy roads, muddy roads and the like and improve traction performance. .
【０００２】[0002]
【従来の技術】バットレス面で開口する小幅溝部とバッ
トレス面から突出する隆起部とを夫々備えた複数の係止
部を、ショルダブロックに形成して、トラクション作用
を発生するとともに雪路走行性能を向上させた空気入り
タイヤとして特開平 2−182503号公報の技術がある。2. Description of the Related Art A plurality of locking portions each having a narrow groove opening on a buttress surface and a protruding portion protruding from the buttress surface are formed on a shoulder block to generate a traction effect and to improve snow road running performance. As an improved pneumatic tire, there is a technique disclosed in JP-A-2-182503.
【０００３】[0003]
【発明が解決しようとする課題】前述従来の技術では、
バットレス面から突出する隆起部の進行方向に向く側面
による圧雪路面に形成されたわだち壁面への引っ掻き、
削りとり効果によって新たなトラクション作用を生じさ
せているが、隆起部に形成したテーパー面のショルダブ
ロックの接地面との連接縁はトレッド縁よりもタイヤ軸
方向内方にあるため、この連接縁の円周前後に段差があ
り、わだち路面からの反力が大きくワンダリング性能お
よびエッジ効果が半減するという課題があった。In the above-mentioned prior art,
Scratching the rutted wall surface formed on the snow-covered road surface by the side of the raised portion protruding from the buttress surface facing the direction of travel,
Although a new traction effect is caused by the scraping effect, the connecting edge of the tapered surface formed on the raised portion with the contact surface of the shoulder block is located more inward in the tire axial direction than the tread edge, so this connecting edge is There are steps around the circumference
Therefore, there is a problem that the reaction force from the rutting road surface is large and the wandering performance and the edge effect are reduced by half.
【０００４】そこで本発明は、隆起部のテーパー面の連
接縁をトレッド縁の円周上に位置させるとともに、この
連接縁よりもタイヤ軸方向内方に、小幅溝部の溝底を形
成することによって、わだち路面にこのテーパー面が先
に沿うことで反力を少なくしてワンダリング効果を生か
し、ワンダリング性能を確保した上でトラクション性能
を向上させたことを目的とするものである。[0004] Therefore, the present invention is to position the connecting edge of the tapered surface of the raised portion on the circumference of the tread edge,
By forming the groove bottom of the narrow groove portion inward of the connecting edge in the tire axial direction , this tapered surface is first formed on the rutted road surface.
The purpose of the invention is to reduce the reaction force by utilizing the wandering effect and to improve the traction performance while ensuring the wandering performance.
【０００５】[0005]
【課題を解決するための手段】本発明は、トレッド部2
に、トレッド縁3 に連なるバットレス面4 で開口する横
溝5 を凹設することにより、該横溝5 間で前記トレッド
縁3 に沿って円周方向に並ぶショルダブロック6 を形成
するとともに、前記バットレス面4 からタイヤ軸方向に
突出しかつ接地側にショルダブロック6 の接地面10に連
なるテーパー面11を有する隆起部12と該隆起部12間でバ
ットレス面4 で開口する小幅溝部13とを有する複数の係
止部9 を、前記ショルダブロック6 に形成し、更に、前
記テーパー面11と接地面10との連接縁10A は前記トレッ
ド縁3 の円周上にあり、この連接縁10A よりもタイヤ軸
方向内方に前記小幅溝部13の溝底14が形成されて前記隆
起部12の進行方向に向く側面12A が小幅溝13においてタ
イヤ軸方向内方に大きくされていることを特徴とするも
のである（請求項１）。 The present invention relates to a tread portion 2
In addition, by forming a lateral groove 5 which is opened at a buttress surface 4 connected to the tread edge 3, a shoulder block 6 is formed between the lateral grooves 5 along the tread edge 3 in the circumferential direction, and the buttress surface is formed. A plurality of protrusions 12 having a tapered surface 11 projecting from the tire block 4 in the tire axial direction and connected to the ground surface 10 of the shoulder block 6 on the ground side, and a narrow groove portion 13 opened between the raised portions 12 with the buttress surface 4. A stop 9 is formed in the shoulder block 6 and
The connecting edge 10A between the tapered surface 11 and the grounding surface 10 is
On the circumference of the edge 3 and the tire shaft
The groove bottom 14 of the narrow groove 13 is formed inward in the direction of
The side surface 12A facing the traveling direction of the raised portion 12
It is characterized by being enlarged inward in the ear axis direction.
(Claim 1).
【０００６】また、本発明は、前記小幅溝部13の溝底14
は、前記バットレス面4 に沿う立上り面を有することを
特徴とするものである（請求項２）。 The present invention also relates to a method of manufacturing
Has a rising surface along the buttress surface 4.
It is a feature (claim 2).
【０００７】[0007]
【作用】平坦路での走行中においては、隆起部12に形成
したテーパー面11は路面に接することがなく、スクウエ
ア部で横方向 (タイヤ軸方向) のグリップを確保する。
一方、雪路等のわだち走行中においては、テーパー面11
が先にわだち路面に沿うことで反力が少なくなるととも
に、バットレス面4 から突出する隆起部12の進行方向に
向く側面12A による引っ掻き、削りとり効果によって新
たなトラクション作用が生じ、この際、小幅溝部13の溝
底14がタイヤ軸方向内方に位置することで、側面12A に
よるトラクション性能が大きくなる。When the vehicle is traveling on a flat road, the tapered surface 11 formed on the raised portion 12 does not come into contact with the road surface, and the grip in the lateral direction (axial direction of the tire) is secured by the square portion.
On the other hand, the tapered surface 11
First, along the rutted road surface, the reaction force decreases, and a new traction effect occurs due to the scratching and scraping effect of the side surface 12A facing the traveling direction of the raised portion 12 protruding from the buttress surface 4, and at this time, the narrow width Since the groove bottom 14 of the groove 13 is located inward in the tire axial direction, the traction performance of the side surface 12A is increased.
【０００８】[0008]
【実施例】以下、図面を参照して本発明の実施例を説明
する。図１（Ａ）は本発明に係る空気入りタイヤ1 のト
レッド部2 を斜視図で示しており、トレッド部2 には、
トレッド縁3 に連なるバットレス面4 で開口する横溝5
を凹設することにより、該横溝5 間で前記トレッド縁3
に沿って円周方向に並ぶショルダブロック6 が形成され
ているとともに、該ショルダブロック6 のタイヤ軸方向
内側には、縦溝7 等を介してサイドブロック8 および図
外のセンターブロックが形成されている。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1A is a perspective view showing a tread portion 2 of a pneumatic tire 1 according to the present invention.
A lateral groove 5 that opens on the buttress surface 4 that continues to the tread edge 3
The tread edge 3 between the lateral grooves 5.
A shoulder block 6 is formed in the tire axial direction inside the shoulder block 6, and a side block 8 and a center block (not shown) are formed through a vertical groove 7 and the like. I have.
【０００９】ショルダブロック6 には、複数の係止部9
が形成してあり、該係止部9 は、バットレス面4 からタ
イヤ軸方向に突出しかつ接地側にショルダブロック6 の
接地面10にトレッド縁3 の円周上に位置する連接縁10A
を介して連なるテーパー面11を有する隆起部12と、該隆
起部12間でバットレス面4 で開口する小幅溝部13とより
なっている。テーパー面11は図１（Ｂ）で示す如くバッ
トレス面4 とのなす角度θが45゜〜75゜として形成して
あり、小幅溝部13の溝底14はバットレス面4 に沿う立上
り面を有して図１（Ｂ）の符号Ｌで示す如く連接縁10A
よりもタイヤ軸方向内方に位置していて、バットレス面
4 より突出する隆起部12の進行方向に向く側面12A が小
幅溝部13において符号Ｌで示すだけ少なくとも大きくさ
れ、これによって、圧雪路面に形成されたわだち壁面の
引っ掻き、削りとり効果による新たなトラクション作用
を大きく生じ得るようになっている。The shoulder block 6 has a plurality of locking portions 9
The engaging portion 9 projects from the buttress surface 4 in the tire axial direction, and the connecting edge 10A which is located on the circumference of the tread edge 3 on the ground surface 10 of the shoulder block 6 on the ground side.
The protruding portion 12 has a tapered surface 11 that is continuous through the protruding portion, and a small width groove portion 13 opened between the protruding portions 12 on the buttress surface 4. As shown in FIG. 1B, the taper surface 11 is formed at an angle .theta. Of 45.degree. To 75.degree. With the buttress surface 4, and the groove bottom 14 of the narrow groove portion 13 has a rising surface along the buttress surface 4. And the connecting edge 10A as shown by the symbol L in FIG.
Is located more inward in the tire axial direction than the buttress surface
4 The side surface 12A facing the direction of travel of the protruding protruding portion 12 is made at least as large as indicated by the symbol L in the small-width groove portion 13, so that the rutted wall surface formed on the snow compacted road surface is scratched and a new traction effect due to the scraping effect is obtained. Can greatly occur.
【００１０】すなわち、既述した従来技術の如く隆起部
に形成したテーパー面の連接縁が小幅溝部の溝底よりも
タイヤ軸方向内方にあると、連接縁の前後に段差が形成
され、わだち路面からの反力が大きくワンダリング性能
およびエッジ効果も半減するのに対し、本発明において
は、従来技術とは逆に、小幅溝部13の溝底14がタイヤ軸
方向内方に位置することによって、隆起部12の進行方向
に向く側面12A が符号Ｌで示す如く大きくなってトラク
ション性能を大きく生じ得るとともに、テーパー面11と
接地面10との連接縁10A がトレッド縁3 の円周上に位置
することから、テーパー面11が先にわだち路面に沿うこ
とで反力が少なくなり、ワンダリング性能を確保してい
るのである。That is, if the connecting edge of the tapered surface formed on the raised portion is located inward of the groove bottom of the small width groove portion in the tire axial direction as in the prior art described above, a step is formed before and after the connecting edge.
On the other hand, while the reaction force from the rutting road surface is large and the wandering performance and the edge effect are halved, in the present invention, the groove bottom 14 of the narrow groove 13 is located inward in the tire axial direction, contrary to the prior art. by, with can result increase the traction side 12A facing in the traveling direction of the raised portion 12 is increased as indicated by reference numeral L, a tapered surface 11
The connecting edge 10A with the ground contact surface 10 is located on the circumference of the tread edge 3.
The tapered surface 11 along the rutted road surface first
And the reaction force is reduced, ensuring wandering performance.
Because
【００１１】一方、ワンダリング性能を向上するにはシ
ョルダブロックの剛性を抑えることが肝要であり、この
点、図２（Ａ）（Ｂ）で示す比較例の如く、ショルダブ
ロックＶに、隆起部Ｖ1 又は溝Ｖ2 を形成することも考
えられるが、この比較例ではいずれもトラクション作用
が今一歩となる。On the other hand, in order to improve the wandering performance, it is important to suppress the rigidity of the shoulder block. In this respect, as shown in a comparative example shown in FIGS. It is conceivable to form V1 or groove V2, but in this comparative example, the traction action is one step away.
【００１２】[0012]
【発明の効果】本発明は以上の通りであり、ショルダブ
ロックの係止部を構成する隆起部にはテーパー面を有す
ることから、一般路上走行中においてはテーパー面は路
面に接触することなく、スクウエア部で横方向グリップ
を発揮させることができ、一方、圧雪路面等ではテーパ
ー面が先にわだち路面に沿うことによって反力が少なく
ワンダリング性能を確保しながら、テーパー面の連接縁
よりもタイヤ軸方向内方に、隆起部とともに係止部を構
成する小幅溝部の溝底が位置するため、隆起部の進行方
向に向く側面は大きくなって、圧雪路面に形成されたわ
だち壁面への引っ掻き、削りとり効果が増長されてトラ
クションが大幅に向上する。As described above, the present invention is as described above. Since the raised portion constituting the locking portion of the shoulder block has a tapered surface, the tapered surface does not come into contact with the road surface during traveling on a general road. The square part can exert a lateral grip, while on a snowy road surface, etc., the taper surface follows the rutted road surface first, so there is less reaction force and wandering performance is secured, but the tire is more than the connecting edge of the taper surface Since the groove bottom of the small width groove portion that constitutes the locking portion together with the raised portion is located inward in the axial direction, the side surface facing the traveling direction of the raised portion becomes larger, scratching the rutted wall surface formed on the snow compacted road surface, It is and scraping effect length increasing with tiger <br/> action is significantly improved.
【図１】本発明実施例を示し、 (Ａ) はトレッド部の斜
視図、 (Ｂ) は要部断面図である。1A and 1B show an embodiment of the present invention, in which FIG. 1A is a perspective view of a tread portion, and FIG.
【図２】本発明の比較例の２つを示す要部斜視図であ
る。FIG. 2 is a perspective view of a main part showing two comparative examples of the present invention.
【符号の説明】 １ 空気入りタイヤ ２ トレッド部 ３ トレッド縁 ４ バットレス面 ５ 横溝 ６ ショルダブロック ９ 係止部10A 連接縁 11 テーパー面 12 隆起部 13 小幅溝部 14 溝底[Description of Signs] 1 Pneumatic tire 2 Tread portion 3 Tread edge 4 Buttress surface 5 Side groove 6 Shoulder block 9 Locking portion 10A Connecting edge 11 Tapered surface 12 Raised portion 13 Small width groove portion 14 Groove bottom
Claims (2)
なるバットレス面(4) で開口する横溝(5) を凹設するこ
とにより、該横溝(5) 間で前記トレッド縁(3) に沿って
円周方向に並ぶショルダブロック(6) を形成するととも
に、前記バットレス面(4) からタイヤ軸方向に突出しか
つ接地側にショルダブロック(6) の接地面(10)に連なる
テーパー面(11)を有する隆起部(12)と該隆起部(12)間で
バットレス面(4) で開口する小幅溝部(13)とを有する複
数の係止部(9) を、前記ショルダブロック(6) に形成
し、更に、前記テーパー面(11)と接地面(10)との連接縁
(10A) は前記トレッド縁(3) の円周上にあり、この連接
縁(10A) よりもタイヤ軸方向内方に前記小幅溝部(13)の
溝底(14)が形成されて前記隆起部(12)の進行方向に向く
側面(12A) が小幅溝(13)においてタイヤ軸方向内方に大
きくされていることを特徴とする空気入りタイヤ。A tread portion (2) is provided with a lateral groove (5) which is open at a buttress surface (4) connected to a tread edge (3), so that the tread edge (3) is formed between the lateral grooves (5). ), And a tapered surface protruding from the buttress surface (4) in the tire axial direction and connected to the contact surface (10) of the shoulder block (6) on the contact side. A plurality of locking portions (9) having a raised portion (12) having a (11) and a narrow groove (13) opened on the buttress surface (4) between the raised portions (12) are connected to the shoulder block (6). ) Formed
And, further, connecting edge of the tapered surface (11) and the ground plane (10)
(10A) is on the circumference of the tread edge (3),
The groove bottom (14) of the small-width groove (13) is formed more inward in the tire axial direction than the edge (10A), and faces the traveling direction of the ridge (12).
The side (12A) is large inward in the tire axial direction in the narrow groove (13).
A pneumatic tire characterized by being crisp .
ットレス面(4) に沿う立上り面を有することを特徴とす
る請求項１に記載の空気入りタイヤ。 The groove bottom (14) of the narrow groove (13) is formed with the
It has a rising surface along the stress surface (4).
The pneumatic tire according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP09815292A JP3164877B2 (en) | 1992-04-17 | 1992-04-17 | Pneumatic tire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP09815292A JP3164877B2 (en) | 1992-04-17 | 1992-04-17 | Pneumatic tire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05294114A JPH05294114A (en) | 1993-11-09 |
| JP3164877B2 true JP3164877B2 (en) | 2001-05-14 |
Family
ID=14212198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP09815292A Expired - Fee Related JP3164877B2 (en) | 1992-04-17 | 1992-04-17 | Pneumatic tire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3164877B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6533007B1 (en) * | 2000-03-02 | 2003-03-18 | Mcmannis Lee A. | Tire having sidewall extensions at opposite ends of each tread element |
| JP6749162B2 (en) * | 2016-07-08 | 2020-09-02 | Ｔｏｙｏ Ｔｉｒｅ株式会社 | Pneumatic tire |
| JP6749161B2 (en) * | 2016-07-08 | 2020-09-02 | Ｔｏｙｏ Ｔｉｒｅ株式会社 | Pneumatic tire |
| JP6986421B2 (en) * | 2017-11-08 | 2021-12-22 | Ｔｏｙｏ Ｔｉｒｅ株式会社 | Pneumatic tires |
-
1992
- 1992-04-17 JP JP09815292A patent/JP3164877B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05294114A (en) | 1993-11-09 |
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