JPH0966709A - Pneumatic tire having block pattern - Google Patents

Pneumatic tire having block pattern

Info

Publication number
JPH0966709A
JPH0966709A JP7222888A JP22288895A JPH0966709A JP H0966709 A JPH0966709 A JP H0966709A JP 7222888 A JP7222888 A JP 7222888A JP 22288895 A JP22288895 A JP 22288895A JP H0966709 A JPH0966709 A JP H0966709A
Authority
JP
Japan
Prior art keywords
groove
side wall
angle
pneumatic tire
contact surface
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.)
Pending
Application number
JP7222888A
Other languages
Japanese (ja)
Inventor
Hiroyuki Matsumura
宏之 松村
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bridgestone Corp
Original Assignee
Bridgestone Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Bridgestone Corp filed Critical Bridgestone Corp
Priority to JP7222888A priority Critical patent/JPH0966709A/en
Publication of JPH0966709A publication Critical patent/JPH0966709A/en
Pending legal-status Critical Current

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
    • B60C11/13—Tread patterns characterised by the groove cross-section, e.g. for buttressing or preventing stone-trapping
    • B60C11/1307—Tread patterns characterised by the groove cross-section, e.g. for buttressing or preventing stone-trapping with special features of the groove walls
    • B60C11/1315—Tread patterns characterised by the groove cross-section, e.g. for buttressing or preventing stone-trapping with special features of the groove walls having variable inclination angles, e.g. warped groove walls

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Tires In General (AREA)

Abstract

PROBLEM TO BE SOLVED: To prevent or control the generation of early uneven wearing so as to extend a service life by setting a groove side wall angle relative to a tread normal to a particular angle in the section of a peripheral direction groove perpendicular to the direction in which the groove is extended. SOLUTION: A number of blocks composed of a plurality of peripheral direction grooves extended in the peripheral direction and a number of side direction grooves extended obliquely in the peripheral direction are spaced in the tire peripheral direction so as to sandwich the side direction grooves. θ1 is 0 to 10 degrees in the upper portions of groove side wall angles of 0 to 15% of a groove depth relative to a tread normal in the sections of the peripheral direction grooves perpendicular to the groove extended direction and θ2 is 20 degrees or more in the lower portions (d2 -d1 ) of 15 to 100% of the groove depth. A groove side wall angle in a spot moved away first from a grounding surface among the groove side wall angles against the tread normal in the section of the side wall of a block kicking out side perpendicular to the side direction groove extended direction is smaller than a groove side angle in a spot moved away from the grounding surface later. Then, for example, the groove side wall angles α, β and γ are respectively set to 10, 20 and 30 degrees.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は、建設車両用空気入りタ
イヤのうち、例えば、クレーン車両用空気入りタイヤな
どの、一般舗装路を走行する機会が多い建設車両に装着
して使用される重荷重用空気入りタイヤに関するもの
で、特に、周方向に延びる複数本の周方向溝と、周方向
に傾斜した方向に延びる多数の横方向溝とによって形成
される多数のブロックが、該横方向溝を挟んでタイヤ周
方向に間隔を置いて配置されたブロック・パターンを備
えた空気入りタイヤに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heavy load to be used by being attached to a construction vehicle, such as a pneumatic tire for a crane vehicle, among pneumatic tires for a construction vehicle, which is often driven on a general pavement. The present invention relates to a heavy duty pneumatic tire, and in particular, a large number of blocks formed by a plurality of circumferential grooves extending in the circumferential direction and a large number of lateral grooves extending in a direction inclined in the circumferential direction, The present invention relates to a pneumatic tire having block patterns which are sandwiched and which are arranged at intervals in the tire circumferential direction.

【０００２】本明細書において、「溝側壁角度」とは、
溝が延びる方向に直角方向の断面におけるトレッド法線
に対する溝側壁の角度を指す。In this specification, the "groove side wall angle" means
It refers to the angle of the groove sidewall with respect to the tread normal in a cross section perpendicular to the direction in which the groove extends.

【０００３】[0003]

【従来の技術】従来の上記重荷重用空気入りタイヤは、
サイド・フォースが加わったときの横方向のブロック剛
性を確保するために、ブロックを形成する周方向溝の溝
側壁角度が溝深さ全体にわたって１０乃至３０度程度の
大きな角度で、溝深さも一定であった。周方向溝の溝側
壁角度をこのように大きくすると、加硫終了後にモール
ドからタイヤを取り出しやすくなり、ブロック欠け故障
が発生しないので、高価な割りモールドを使用しなくて
もよいという利点もあった。一方、横方向溝は、位置に
無関係に、一様な溝側壁角度と溝深さで形成されてい
た。2. Description of the Related Art The conventional pneumatic tire for heavy load is
In order to secure lateral block rigidity when side force is applied, the groove side wall angle of the circumferential groove forming the block is a large angle of about 10 to 30 degrees over the entire groove depth, and the groove depth is also constant. Met. When the groove side wall angle of the circumferential groove is increased in this way, it is easy to take out the tire from the mold after vulcanization is completed, and a block chip failure does not occur, so there is also an advantage that an expensive split mold need not be used. . On the other hand, the lateral groove was formed with a uniform groove sidewall angle and groove depth regardless of the position.

【０００４】[0004]

【発明が解決しようとする課題】上記重荷重用空気入り
タイヤは、負荷時にブロックが大きく変形し、溝側壁が
接地するような極めて苛酷な重荷重条件下で使用され
る。その結果、従来のタイヤは、この接地した溝側壁部
分が核となって比較的早期に偏摩耗が発生し、タイヤの
寿命を短くしていた。The above pneumatic tire for heavy load is used under extremely severe heavy load conditions such that the block is largely deformed when loaded and the groove side wall is grounded. As a result, in conventional tires, uneven wear occurs relatively early due to the ground contacting the side wall of the groove, which shortens the life of the tire.

【０００５】本発明の目的は、上記のような従来技術の
不具合を解消して、早期偏摩耗の発生を防止または抑制
し、寿命の長いタイヤを提供することである。An object of the present invention is to solve the above-mentioned problems of the prior art and to prevent or suppress the occurrence of early uneven wear and provide a tire having a long life.

【０００６】[0006]

【課題を解決するための手段】上記目的を達成するため
に、本発明の空気入りタイヤは、周方向に延びる複数本
の周方向溝と、周方向に傾斜した方向に延びる多数の横
方向溝とによって形成される多数のブロックが、横方向
溝を挟んでタイヤ周方向に間隔を置いて配置されたブロ
ック・パターンを備えた空気入りタイヤにおいて、
（１）周方向溝の、溝が延びる方向に直角方向の断面に
おけるトレッド法線に対する溝側壁角度が、溝深さの０
乃至１５％の上方部分では０乃至１０度で、溝深さの１
５乃至１００％の下方部分では１０度以上で、（２）該
ブロックの蹴り出し側の側壁の、該横方向溝が延びる方
向に直角方向の断面におけるトレッド法線に対する溝側
壁角度のうち、先に接地面から離れる個所の溝側壁角度
が後に接地面から離れる個所の溝側壁角度より小さな角
度で、（３）該横方向溝の溝深さが、上記先に接地面か
ら離れる個所で深く、上記後に接地面から離れる個所で
浅くなっていることを特徴とする重荷重用空気入りタイ
ヤである。In order to achieve the above object, the pneumatic tire of the present invention comprises a plurality of circumferential grooves extending in the circumferential direction and a large number of lateral grooves extending in a direction inclined in the circumferential direction. A large number of blocks formed by and in a pneumatic tire having a block pattern arranged at intervals in the tire circumferential direction with a lateral groove interposed therebetween,
(1) The groove side wall angle with respect to the tread normal line in the cross section of the circumferential groove in the direction perpendicular to the direction in which the groove extends is the groove depth of 0
0 to 10 degrees in the upper part of 15% to 15% of the groove depth
In the lower portion of 5 to 100%, the angle is 10 degrees or more, and (2) of the side wall angles on the kick-out side of the block, of the groove side wall angle with respect to the tread normal in a cross section perpendicular to the direction in which the lateral groove extends, The groove side wall angle at the part away from the ground plane is smaller than the groove side wall angle at the part later separated from the ground plane, and (3) the groove depth of the lateral groove is deep at the part far from the ground plane above, The pneumatic tire for heavy loads is characterized in that after the above, it becomes shallower at a location away from the ground contact surface.

【０００７】本発明の空気入りタイヤでは、上記のよう
に、周方向溝の、溝が延びる方向に直角方向の断面にお
けるトレッド法線に対する溝側壁角度が、溝深さの０乃
至１５％の上方部分では０乃至１０度で、溝深さの１５
乃至１００％の下方部分では１０度以上であるので、極
めて苛酷な重荷重条件下で使用され負荷時にブロックが
大きく変形しても、溝側壁が接地することなく、したが
って接地した溝側壁部分が核となって比較的早期に偏摩
耗が発生することがなく、早期偏摩耗の発生を防止また
は抑制することができる。In the pneumatic tire of the present invention, as described above, the groove sidewall angle with respect to the tread normal line in the cross section of the circumferential groove in the direction perpendicular to the direction in which the groove extends extends above 0 to 15% of the groove depth. The part is 0 to 10 degrees and the groove depth is 15
Since the lower part of 100% to 100% is 10 degrees or more, even if the block is greatly deformed under load when it is used under extremely severe load conditions, the groove side wall does not come into contact with the ground. Therefore, uneven wear does not occur relatively early, and it is possible to prevent or suppress the occurrence of early uneven wear.

【０００８】本発明の空気入りタイヤでは、上記のよう
にブロックの蹴り出し側の側壁の、横方向溝が延びる方
向に直角方向の断面におけるトレッド法線に対する溝側
壁角度のうち、先に接地面から離れる個所の溝側壁角度
が後に接地面から離れる個所の溝側壁角度より小さな角
度であり、しかも横方向溝の溝深さが、上記先に接地面
から離れる個所で深くて、上記後に接地面から離れる個
所で浅くなっているので、ブロック剛性のバランスが確
保され、横方向溝に接するブロック端部が均一に摩耗し
て、早期偏摩耗の発生を防止または抑制することができ
る。In the pneumatic tire of the present invention, as described above, among the groove side wall angles with respect to the tread normal in the cross section of the side wall on the kicking side of the block perpendicular to the direction in which the lateral groove extends, the ground contact surface is first. The groove side wall angle away from the ground plane is smaller than the groove side wall angle away from the ground plane later, and the groove depth of the lateral groove is deeper at the point farther away from the ground plane than the ground plane. Since it is shallower at a position away from, it is possible to secure the balance of the block rigidity, uniformly wear the end portion of the block in contact with the lateral groove, and prevent or suppress the occurrence of premature uneven wear.

【０００９】本発明の空気入りタイヤでは、ブロックの
蹴り出し側の側壁の、横方向溝が延びる方向に直角方向
の断面におけるトレッド法線に対する溝側壁角度が、先
に接地面から離れる個所から後に接地面から離れる個所
に向けて漸増することが、ブロック剛性のバランスを確
保するために好ましい。In the pneumatic tire of the present invention, the groove side wall angle with respect to the tread normal of the side wall on the kicking side of the block with respect to the tread normal in the cross-section perpendicular to the direction in which the lateral groove extends is first measured from the point separated from the ground contact surface to the second. It is preferable to gradually increase the distance from the ground contact surface to secure the balance of block rigidity.

【００１０】本発明の空気入りタイヤでは、横方向溝の
溝深さが、上記先に接地面から離れる個所から上記後に
接地面から離れる個所に向けて漸減することが、ブロッ
ク剛性のバランスを確保するために好ましい。In the pneumatic tire of the present invention, the groove depth of the lateral groove is gradually reduced from the portion farther from the ground contact surface to the portion farther away from the ground contact surface, thereby ensuring the balance of block rigidity. Is preferred.

【００１１】本発明の空気入りタイヤでは、ブロックの
表面積が２２．５ｃｍ2 以上であることが、上記のよう
な本発明による作用効果を達成するために好ましい。In the pneumatic tire of the present invention, it is preferable that the surface area of the block is 22.5 cm 2 or more in order to achieve the above-described effects of the present invention.

【００１２】[0012]

【発明の実施の形態】本発明に従う実施例について図面
を参照して説明すると、図１は本発明に従う実施例の重
荷重用空気入りタイヤのトレッド・パターンの一部拡大
正面図で、図２はＤ−Ｄ断面図およびＥ−Ｅ断面図で、
図３はＡ−Ａ断面図、Ｂ−Ｂ断面図およびＣ−Ｃ断面図
であって、タイヤ・サイズは１４００Ｒ２５である。図
１に示す本発明による実施例のタイヤは、周方向に延び
る複数本の周方向溝１と、周方向に傾斜した方向に延び
る多数の横方向溝２とによって形成される多数のブロッ
ク３が、横方向溝２を挟んでタイヤ周方向に間隔を置い
て配置されたブロック・パターンを備えた空気入りタイ
ヤである。周方向溝１のＤ−Ｄ断面図およびＥ−Ｅ断面
図を図２に示す。図示のように、Ｄ−Ｄ断面では、周方
向溝１の溝が延びる方向に直角方向の断面におけるトレ
ッド法線に対する溝側壁角度が、溝深さの０乃至１５％
の上方部分と溝深さの１５乃至１００％の下方部分では
異なった値となっている。すなわち、溝深さｄ2 が３０
ｍｍで、その１５％に相当するｄ1 ＝４．５ｍｍの上方
部分では溝側壁角度θ1 が３度で、下方部分では溝側壁
角度θ2 が１５度である。また、Ｅ−Ｅ断面では、図示
のように、溝側壁角度が、溝深さｄ2 ＝３０ｍｍの１５
％に相当するｄ1 ＝４．５ｍｍの上方部分では溝側壁角
度θ1 ＝０度で、下方部分では溝側壁角度θ2 が３０度
で、溝側壁角度θ3 が２０度である。図３のＡ−Ａ断面
図、Ｂ−Ｂ断面図およびＣ−Ｃ断面図に示すように、ブ
ロックの蹴り出し側の側壁の、横方向溝が延びる方向に
直角方向の断面における、トレッド法線に対する溝側壁
角度のうち、先に接地面から離れる個所の溝側壁角度が
後に接地面から離れる個所の溝側壁角度より小さな角度
であり、しかも横方向溝の溝深さが、上記先に接地面か
ら離れる個所で深く、上記後に接地面から離れる個所で
浅くなっている。すなわち、Ａ−Ａ断面、Ｂ−Ｂ断面お
よびＣ−Ｃ断面のうち最も先に接地面から離れる個所が
Ａ−Ａ断面で、その次がＢ−Ｂ断面で、Ｃ−Ｃ断面が最
後に接地面から離れる個所であり、横方向溝２の蹴り出
し側の側壁の溝側壁角度αが１０度、βが２０度、γが
３０度で、溝側壁角度が先に接地面から離れる個所から
後に接地面から離れる個所に向けて漸増し、横方向溝２
の溝深さｄA が３０ｍｍで、ｄB が２５ｍｍで、ｄC が
２０ｍｍで、溝深さが先に接地面から離れる個所から後
に接地面から離れる個所に向けて漸減している。ブロッ
ク３には、タイヤ赤道線Ｅの近傍の中央部２列の縦長の
ブロックとその両側部のブロックとトレッド端部のブロ
ックとがあるが、それぞれのブロックの表面積が３５ｃ
ｍ2 、４１ｃｍ2 および２８ｃｍ2 である。BEST MODE FOR CARRYING OUT THE INVENTION An embodiment according to the present invention will be described with reference to the drawings. FIG. 1 is a partially enlarged front view of a tread pattern of a heavy duty pneumatic tire of the embodiment according to the present invention, and FIG. In the D-D sectional view and the EE sectional view,
FIG. 3 is an AA sectional view, a BB sectional view and a CC sectional view, and the tire size is 1400R25. In the tire according to the embodiment of the present invention shown in FIG. 1, a large number of blocks 3 formed by a plurality of circumferential grooves 1 extending in the circumferential direction and a plurality of lateral grooves 2 extending in a direction inclined in the circumferential direction are provided. , A pneumatic tire having block patterns arranged at intervals in the tire circumferential direction with the lateral groove 2 interposed therebetween. A DD sectional view and an EE sectional view of the circumferential groove 1 are shown in FIG. As shown in the figure, in the DD cross section, the groove sidewall angle with respect to the tread normal line in the cross section of the circumferential groove 1 in the direction perpendicular to the groove extending direction is 0 to 15% of the groove depth.
Has different values in the upper part of the groove and in the lower part of 15 to 100% of the groove depth. That is, the groove depth d2 is 30
The groove side wall angle .theta.1 is 3 degrees in the upper portion of d1 = 4.5 mm, which corresponds to 15% thereof, and the groove side wall angle .theta.2 is 15 degrees in the lower portion. Further, in the EE cross section, as shown in the drawing, the groove side wall angle is 15 mm at the groove depth d2 = 30 mm.
%, The groove side wall angle .theta.1 = 0 degree in the upper part of d1 = 4.5 mm, the groove side wall angle .theta.2 is 30 degrees and the groove side wall angle .theta.3 is 20 degrees in the lower part. As shown in the AA cross-sectional view, the BB cross-sectional view, and the CC cross-sectional view of FIG. 3, the tread normal line in the cross section of the side wall on the kick-out side of the block in the direction perpendicular to the direction in which the lateral groove extends. Of the groove side wall angle with respect to, the groove side wall angle of the part that first separates from the ground plane is smaller than the groove side wall angle of the part that separates later from the ground plane, and the groove depth of the lateral groove is larger than that of the ground plane. It is deep at the location away from and shallow at the location away from the ground plane after the above. That is, of the AA cross section, the BB cross section, and the CC cross section, the part that is the first to separate from the ground plane is the AA cross section, the next is the BB cross section, and the CC cross section is the last contact point. It is a part away from the ground, and the side wall on the kicking side of the lateral groove 2 has a groove side wall angle α of 10 °, β of 20 °, γ of 30 °, and the groove side wall angle comes first from the place of separation from the ground surface. Gradually increase in the direction away from the ground plane, lateral groove 2
The groove depth dA is 30 mm, dB is 25 mm, dC is 20 mm, and the groove depth is gradually reduced from the part that first comes off the ground surface to the part that comes farther from the ground surface. The blocks 3 include vertically elongated blocks in the central two rows in the vicinity of the tire equator line E, blocks on both sides of the blocks, and blocks at the tread ends, each having a surface area of 35c.
m 2 , 41 cm 2 and 28 cm 2 .

【００１３】従来例の空気入りタイヤは、ブロック３を
形成する周方向溝１と横方向溝２の溝側壁角度が溝深さ
全体にわたって一様に３０度程度の大きな角度で、溝深
さも一定であることを除き、実施例１の空気入りタイヤ
とほぼ同じである。In the conventional pneumatic tire, the groove sidewall angle of the circumferential groove 1 and the lateral groove 2 forming the block 3 is a large angle of about 30 degrees uniformly over the entire groove depth, and the groove depth is also constant. The pneumatic tire is substantially the same as the pneumatic tire of Example 1 except that

【００１４】上記本発明に従う実施例の空気入りタイヤ
と上記従来例の空気入りタイヤについて、耐偏摩耗特性
の比較試験を実施した。それぞれ５本の供試タイヤを車
両に装着し、通常の使用条件で所定期間走行後、走行距
離とブロックの摩耗率を測定し、タイヤの寿命を推定し
たところ、上記従来例の空気入りタイヤの推定寿命を１
００とすると上記実施例の空気入りタイヤの推定寿命は
１４０であった。A comparative test of uneven wear resistance was carried out on the pneumatic tire of the example according to the present invention and the pneumatic tire of the conventional example. Each of the five test tires was mounted on a vehicle, and after running for a predetermined period under normal use conditions, the running distance and the wear rate of the block were measured to estimate the tire life. Estimated life is 1
When set to 00, the estimated life of the pneumatic tire of the above example was 140.

【００１５】[0015]

【発明の効果】上記の評価結果から、本発明に基づく実
施例の空気入りタイヤは従来例の空気入りタイヤと比べ
て、早期偏摩耗の発生を防止または抑制し、寿命の長い
タイヤであることが分かる。From the above evaluation results, the pneumatic tires of the examples according to the present invention are tires that prevent or suppress the occurrence of premature uneven wear and have a long service life, as compared with the conventional pneumatic tires. I understand.

【図面の簡単な説明】[Brief description of drawings]

【図１】本発明による空気入りタイヤのトレッド・パタ
ーンの一部拡大図である。FIG. 1 is a partially enlarged view of a tread pattern of a pneumatic tire according to the present invention.

【図２】本発明による空気入りタイヤの溝断面図であ
る。FIG. 2 is a groove cross-sectional view of the pneumatic tire according to the present invention.

【図３】本発明による空気入りタイヤの溝断面図であ
る。FIG. 3 is a groove sectional view of the pneumatic tire according to the present invention.

【符号の説明】[Explanation of symbols]

１ 周方向溝 ２ 横方向溝 ３ ブロック Ｅ タイヤ赤道線 Ｎ トレッド法線 1 circumferential groove 2 lateral groove 3 block E tire equatorial line N tread normal

Claims (4)

【特許請求の範囲】[Claims] 【請求項１】 周方向に延びる複数本の周方向溝と、周
方向に傾斜した方向に延びる多数の横方向溝とによって
形成される多数のブロックが、該横方向溝を挟んでタイ
ヤ周方向に間隔を置いて配置されたブロック・パターン
を備えた空気入りタイヤにおいて、（１）該周方向溝
の、溝が延びる方向に直角方向の断面におけるトレッド
法線に対する溝側壁角度が、溝深さの０乃至１５％の上
方部分では０乃至１０度で、溝深さの１５乃至１００％
の下方部分では１０度以上で、（２）該ブロックの蹴り
出し側の側壁の、該横方向溝が延びる方向に直角方向の
断面におけるトレッド法線に対する溝側壁角度のうち、
先に接地面から離れる個所の溝側壁角度が後に接地面か
ら離れる個所の溝側壁角度より小さな角度で、（３）該
横方向溝の溝深さが、上記先に接地面から離れる個所で
深く、上記後に接地面から離れる個所で浅くなっている
ことを特徴とする重荷重用空気入りタイヤ。1. A large number of blocks formed by a plurality of circumferential grooves extending in the circumferential direction and a large number of lateral grooves extending in a direction inclined in the circumferential direction are provided in the tire circumferential direction with the lateral grooves sandwiched therebetween. In a pneumatic tire having block patterns spaced apart from each other, (1) a groove sidewall angle with respect to a tread normal line in a cross section of the circumferential groove at a right angle to a groove extending direction is a groove depth. 0 to 15% in the upper part of 0 to 10%, and 15 to 100% of the groove depth
Of the groove side wall angle with respect to the tread normal in the cross section of the side wall on the kicking side of the block perpendicular to the direction in which the lateral groove extends,
The angle of the side wall of the groove that first separates from the contact surface is smaller than the angle of the side wall of the groove that separates from the contact surface later, and (3) the groove depth of the lateral groove is deeper at the position apart from the contact surface first. A heavy-duty pneumatic tire, characterized in that it is shallower at a portion separated from the ground contact surface after the above. 【請求項２】 該ブロックの蹴り出し側の側壁の、該横
方向溝が延びる方向に直角方向の断面におけるトレッド
法線に対する溝側壁角度が、先に接地面から離れる個所
から後に接地面から離れる個所に向けて漸増することを
特徴とする請求項１記載の空気入りタイヤ。2. The groove side wall angle with respect to the tread normal in the cross section of the kick-out side wall of the block, which is perpendicular to the direction in which the lateral groove extends, is separated from the ground contact surface from the part that first separates from the ground contact surface. The pneumatic tire according to claim 1, wherein the pneumatic tire is gradually increased toward a portion. 【請求項３】 該横方向溝の溝深さが、上記先に接地面
から離れる個所から上記後に接地面から離れる個所に向
けて漸減することを特徴とする請求項１乃至２記載の空
気入りタイヤ。3. The pneumatic inflator according to claim 1, wherein the groove depth of the lateral groove is gradually reduced from the portion farther from the ground contact surface toward the portion farther away from the ground contact surface. tire. 【請求項４】 該ブロックの表面積が２２．５ｃｍ2 以
上であることを特徴とする請求項１乃至３記載の空気入
りタイヤ。4. The pneumatic tire according to claim 1, wherein the surface area of the block is 22.5 cm 2 or more.
JP7222888A 1995-08-31 1995-08-31 Pneumatic tire having block pattern Pending JPH0966709A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7222888A JPH0966709A (en) 1995-08-31 1995-08-31 Pneumatic tire having block pattern

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7222888A JPH0966709A (en) 1995-08-31 1995-08-31 Pneumatic tire having block pattern

Publications (1)

Publication Number Publication Date
JPH0966709A true JPH0966709A (en) 1997-03-11

Family

ID=16789451

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7222888A Pending JPH0966709A (en) 1995-08-31 1995-08-31 Pneumatic tire having block pattern

Country Status (1)

Country Link
JP (1) JPH0966709A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008148594A1 (en) * 2007-06-06 2008-12-11 Continental Aktiengesellschaft Vehicle pneumatic tire
CN107000499A (en) * 2014-11-24 2017-08-01 大陆轮胎德国有限公司 Pneumatic vehicle tire

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008148594A1 (en) * 2007-06-06 2008-12-11 Continental Aktiengesellschaft Vehicle pneumatic tire
US9168792B2 (en) 2007-06-06 2015-10-27 Continental Reifen Deutschland Gmbh Pneumatic vehicle tire with tread having circumferential grooves having projections
CN107000499A (en) * 2014-11-24 2017-08-01 大陆轮胎德国有限公司 Pneumatic vehicle tire
CN107000499B (en) * 2014-11-24 2020-04-07 大陆轮胎德国有限公司 Pneumatic tire for vehicle

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