JPH0569706A - Pneumatic tire - Google Patents
Pneumatic tireInfo
- Publication number
- JPH0569706A JPH0569706A JP3230524A JP23052491A JPH0569706A JP H0569706 A JPH0569706 A JP H0569706A JP 3230524 A JP3230524 A JP 3230524A JP 23052491 A JP23052491 A JP 23052491A JP H0569706 A JPH0569706 A JP H0569706A
- Authority
- JP
- Japan
- Prior art keywords
- groove
- grooves
- circumferential
- tread
- tire
- 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
- 239000011295 pitch Substances 0.000 claims abstract description 14
- 238000005096 rolling process Methods 0.000 abstract description 3
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
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
- B60C11/0318—Tread patterns irregular patterns with particular pitch sequence
-
- 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
- B60C11/1272—Width of the sipe
- B60C11/1281—Width of the sipe different within the same sipe, i.e. enlarged width portion at sipe bottom or along its length
-
- 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
- B60C2011/0337—Tread patterns characterised by particular design features of the pattern
- B60C2011/0339—Grooves
- B60C2011/0381—Blind or isolated grooves
- B60C2011/0383—Blind or isolated grooves at the centre of the tread
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tires In General (AREA)
Abstract
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、より具体的には、特に乗用車に適用されて、ドライ
路面およびウエット路面に対する操縦安定性を犠牲にす
ることなく、車室内の居住性を有利に向上させた高性能
ラジアル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 pneumatic tire, and more specifically, to a pneumatic tire, and more particularly, it is applied to a passenger car, and is used in a passenger compartment without sacrificing steering stability on a dry road surface and a wet road surface. The present invention relates to a high-performance radial tire having an improved property.
【０００２】[0002]
【従来の技術】タイヤの周方向へ相互に平行に延在させ
た複数本の周方向溝と、トレッドの中央部領域からそれ
ぞれのトレッド端へ向け周方向溝に対する交角を傾向的
に次第に変化させながら延在させた複数本の左右の広幅
傾斜溝とをトレッド踏面部に備え、タイヤの負荷転動時
に溝壁が互いに接触する程度の開口幅を有する複数本の
左右の狭幅傾斜溝を、周方向溝に対し、前記広幅傾斜溝
とは逆方向への交角を有し延在させている空気入りタイ
ヤは、特開平３−10908 号公報で公知であり、ドライ路
面およびウエット路面に対する操縦安定性を犠牲にする
ことなく、車室内への音 (ノイズ) の伝播をおさえ、居
住性の向上を図っている。2. Description of the Related Art A plurality of circumferential grooves extending in parallel to each other in the circumferential direction of a tire and the angle of intersection of the circumferential grooves from the central region of the tread to the respective tread ends tend to gradually change. A plurality of left and right wide inclined grooves that are extended while being provided in the tread tread portion, a plurality of left and right narrow inclined grooves having an opening width such that the groove walls contact each other when the tire rolls, A pneumatic tire extending from the circumferential groove with an angle of intersection in the opposite direction to the wide inclined groove is known from Japanese Patent Application Laid-Open No. 3-10908, and steering stability on dry and wet road surfaces is known. It suppresses the transmission of noise (noise) into the passenger compartment without sacrificing the comfort of the vehicle, thus improving comfort.
【０００３】[0003]
【発明が解決しようとする課題】前述公報で開示の空気
入りタイヤにおいて、より一層のパターンノイズの低減
を目指すため、ブロック、リブ等のトレッドパターンの
周方向におけるピッチ数を増大すると、トレッド剛性
(トレッドブロック剛性) が低下し、操縦安定性の低下
するおそれがあった。In the pneumatic tire disclosed in the above publication, the tread rigidity is increased by increasing the number of pitches in the circumferential direction of the tread pattern such as blocks and ribs in order to further reduce the pattern noise.
(Tread block rigidity) was reduced, and there was a risk of reduced steering stability.
【０００４】本発明は、叙述の課題に鑑み、トレッド踏
面部における中央部領域に、所謂周方向に連続したリブ
を形成することで、トレッド剛性を向上させ、該リブ部
分における陸部のエッジ効果、すなわち、ウエット路面
に対する水切り効果、氷雪路面に対する喰込力などを大
きく向上させ得るようにしたことを目的とする。In view of the above-mentioned problems, the present invention improves the tread rigidity by forming a so-called circumferentially continuous rib in the central region of the tread tread portion, and the edge effect of the land portion at the rib portion. That is, it is an object of the present invention to make it possible to greatly improve the drainage effect on a wet road surface, the biting force on an ice and snow road surface, and the like.
【０００５】[0005]
【課題を解決するための手段】本発明は、タイヤの周方
向へ相互に平行に延在させた複数本の周方向溝2L,2R,3
L,3R と、トレッドの中央部領域からそれぞれのトレッ
ド端へ向け周方向溝2L,2R,3L,3R に対する交角を傾向的
に次第に変化させながら延在させた複数本の左右の広幅
傾斜溝4L,4R とをトレッド踏面部Ｔに備え、タイヤの負
荷転動時に溝壁5が互いに接触する程度の開口幅6 を有
する複数本の左右の狭幅傾斜溝7L,7R を、周方向溝2L,2
R,3L,3R に対し、前記広幅傾斜溝4L,4R とは逆方向への
交角を有して延在させている空気入りタイヤにおいて、
前述の目的を達成するために、次の技術的手段を講じて
いる。SUMMARY OF THE INVENTION The present invention is directed to a plurality of circumferential grooves 2L, 2R, 3 extending parallel to each other in the circumferential direction of a tire.
L, 3R and multiple left and right wide inclined grooves 4L extending from the central region of the tread to the respective tread ends while gradually changing the intersection angle with the circumferential grooves 2L, 2R, 3L, 3R. , 4R on the tread surface T, and a plurality of right and left narrow inclined grooves 7L, 7R having an opening width 6 such that the groove walls 5 contact each other when the tire rolls under load, the circumferential groove 2L, 2
With respect to R, 3L, 3R, in the pneumatic tire extending with an intersection angle in the opposite direction to the wide inclined grooves 4L, 4R,
In order to achieve the above-mentioned object, the following technical measures are taken.
【０００６】すなわち、請求項１に係る本発明では、前
記左右の狭幅傾斜溝7L,7R の周方向３ピッチ毎に、タイ
ヤの負荷転動時に溝壁8 が互いに接触しない程度の開口
幅9を有する中間幅傾斜溝10L,10R を備え、前記左右の
広幅傾斜溝4L,4R はトレッドの中央部領域において周方
向1/2 ピッチずらされているとともに該溝長手方向一端
11L,11R が閉鎖されていることを特徴とするものであ
る。That is, according to the first aspect of the present invention, for each three pitches in the circumferential direction of the left and right narrow-width inclined grooves 7L, 7R, the opening width 9 is such that the groove walls 8 do not come into contact with each other during load rolling of the tire. an intermediate width slant groove 10L, 10R with the left and right of the wide inclined grooves 4L, 4R are groove one longitudinal end with being offset circumferentially 1/2 pitch in the center area of the tread
The feature is that 11L and 11R are closed.
【０００７】請求項２に係る本発明では、請求項１にお
ける左右の広幅傾斜溝4L,4R の閉鎖されている溝長手方
向一端11L,11R に、該閉鎖部分を周方向溝2L,2R に連通
する左右の狭幅傾斜溝14L,14R を有し、該溝14L,14R の
溝底には、該溝14L,14R の開口幅6 が閉じられても周方
向溝2L,2R に連通する拡溝部15を有していることを特徴
とするものである。According to the second aspect of the present invention, the left and right wide inclined grooves 4L and 4R of the first aspect are connected to the closed longitudinal ends 11L and 11R of the groove, and the closed portions communicate with the circumferential grooves 2L and 2R. The left and right narrow inclined grooves 14L and 14R are formed, and the groove bottoms of the grooves 14L and 14R communicate with the circumferential grooves 2L and 2R even if the opening width 6 of the grooves 14L and 14R is closed. It is characterized by having 15.
【０００８】請求項３に係る本発明では、請求項１にお
ける周方向溝2L,2R,3L,3R は、トレッドの中央部領域に
位置する左右の第１周方向溝2L,2R と、この溝2L,2R の
左右方向外方に位置する左右の第２周方向溝3L,3R とか
らなり、第１周方向溝2L,2Rは第２周方向溝3L,3R より
溝幅が広く形成されていることを特徴とするものであ
る。In the present invention according to claim 3, the circumferential grooves 2L, 2R, 3L, 3R in claim 1 are the left and right first circumferential grooves 2L, 2R located in the central region of the tread, and these grooves. It is composed of the left and right second circumferential grooves 3L, 3R which are located outward of the left and right sides of 2L, 2R, and the first circumferential groove 2L, 2R is wider than the second circumferential groove 3L, 3R. It is characterized by being present.
【０００９】[0009]
【作用】本発明のタイヤは、タイヤの周方向へ相互に平
行に延在させた複数本の周方向溝2L,2R,3L,3R と、トレ
ッドの中央部領域からそれぞれのトレッド端へ向け周方
向溝2L,2R,3L,3R に対する交角を傾向的に次第に変化さ
せながら延在させた複数本の左右の広幅傾斜溝4L,4R と
をトレッド踏面部Ｔに備えることによって、主に、ウエ
ット路面に対するすぐれた排水性をもたらすとともに、
タイヤの負荷転動時に溝壁5 が互いに接触する程度の開
口幅6 を有する複数本の左右の狭幅傾斜溝7L,7R を、周
方向溝2L,2R,3L,3R に対し、前記広幅傾斜溝4L,4R とは
逆方向への交角を有して延在させていることにより、周
方向溝2L,2R,3L,3R で区画される陸部の剛性低下を抑制
するという基本的作用に加えて、次の特有な作用をす
る。The tire of the present invention has a plurality of circumferential grooves 2L, 2R, 3L, 3R extending in parallel to each other in the circumferential direction of the tire and a circumferential groove extending from the central region of the tread to each tread end. By providing the tread tread T with a plurality of left and right wide inclined grooves 4L, 4R extending while gradually changing the intersection angle with the direction grooves 2L, 2R, 3L, 3R, mainly on a wet road surface. With excellent drainage to
A plurality of left and right narrow slanted grooves 7L, 7R having an opening width 6 that allows the groove walls 5 to contact each other when the tire rolls under load, with respect to the circumferential grooves 2L, 2R, 3L, 3R. By extending it with an angle of intersection in the opposite direction to the grooves 4L, 4R, it has the basic effect of suppressing the decrease in rigidity of the land part partitioned by the circumferential grooves 2L, 2R, 3L, 3R. In addition, it has the following unique action.
【００１０】すなわち、前記左右の狭幅傾斜溝7L,7R の
周方向３ピッチ毎に、タイヤの負荷転動時に溝壁8 が互
いに接触しない程度の開口幅9 を有する中間幅傾斜溝10
L,10R を備えることによって、該溝10L,10R の開口縁に
おけるエッジ効果を増大してドライ路面、ウエット路面
での操安性を確保し、しかも排水性を良好にし、ポンピ
ング音の発生を抑制する。That is, the intermediate width inclined groove 10 having an opening width 9 such that the groove walls 8 do not come into contact with each other when the tire rolls under load at every 3 pitches in the circumferential direction of the left and right narrow inclined grooves 7L, 7R.
By providing L and 10R, the edge effect at the opening edge of the grooves 10L and 10R is increased to secure the operation stability on dry road surface and wet road surface, and also improve drainage performance and suppress pumping noise generation. To do.
【００１１】また、前記左右の広幅傾斜溝4L,4R はトレ
ッドの中央部領域において周方向1/ 2 ピッチずらされて
いるとともに該溝長手方向一端11L,11R が閉鎖されてい
ることから、トレッド中央領域には所謂周方向に連続し
た陸部12が所謂センターリブ化されて陸部12の剛性を向
上するとともに偏摩耗を防止する。更に、請求項２に係
る本発明では、請求項１における左右の広幅傾斜溝4L,4
Rの閉鎖されている溝長手方向一端11L,11R に、該閉鎖
部分を周方向溝2L,3L に連通する左右の狭幅傾斜溝14L,
14R を有し、該溝14L,14R の溝底には、該溝14L,14R の
開口幅6 が閉じられても周方向溝2L,2R に連通する拡溝
部15を有していることから、タイヤの負荷時に狭幅傾斜
溝14L,14R の開口幅6 を閉じて陸部剛性を向上させたに
も拘わらず拡溝部15によって排水性を確保するとともに
パターンノイズを低減する。Further, the left and right wide inclined grooves 4L and 4R are
Circumferential direction in the central area of the1/ 2Pitch shifted
And the longitudinal ends 11L and 11R of the groove are closed.
Therefore, the central area of the tread is continuous in the so-called circumferential direction.
The land portion 12 is so-called center rib to improve the rigidity of the land portion 12.
It also prevents uneven wear. Further, according to claim 2,
According to the present invention, the left and right wide wide inclined grooves 4L, 4
The closed groove of R is closed at one end 11L, 11R in the longitudinal direction.
Left and right narrow groove 14L, which connects the part to the circumferential grooves 2L and 3L,
14R, and the bottoms of the grooves 14L, 14R have the grooves 14L, 14R
Expansion groove that communicates with circumferential grooves 2L and 2R even when opening width 6 is closed
Because it has the part 15, it can be narrowed when the tire is loaded.
To improve the rigidity of the land by closing the opening width 6 of the grooves 14L and 14R
Despite the fact that the wide groove 15 ensures drainage
Reduce pattern noise.
【００１２】また、請求項３に係る本発明では、請求項
１における周方向溝2L,2R,3L,3R は、トレッドの中央部
領域に位置する左右の第１周方向溝2L,2R と、この溝2
L,2Rの左右方向外方に位置する左右の第２周方向溝3L,3
R とからなり、第１周方向溝2L,2R は第２周方向溝3L,3
R より溝幅が広く形成されていることから、広幅傾斜溝
4L,4R と相まって排水性を良好にし、ウエット路面での
エッジ効果を確保する。In the present invention according to claim 3, the circumferential grooves 2L, 2R, 3L, 3R in claim 1 are the left and right first circumferential grooves 2L, 2R located in the central region of the tread, This groove 2
Left and right second circumferential grooves 3L, 3 located outside of L, 2R in the left-right direction
R and the first circumferential groove 2L, 2R is the second circumferential groove 3L, 3
Since the groove width is wider than that of R,
Together with 4L and 4R, it improves drainage and secures an edge effect on wet road surfaces.
【００１３】[0013]
【実施例】以下、図を参照して本発明の実施例を説明す
る。図１は本発明の一実施例を示すトレッドパターンで
ある。なお、タイヤの内部構造は、通常の空気入りラジ
アルタイヤのそれと同様であるので、詳細は省略してい
る。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a tread pattern showing an embodiment of the present invention. Since the internal structure of the tire is the same as that of a normal pneumatic radial tire, the details are omitted.
【００１４】図示したタイヤ1 のトレッド踏面部Ｔに
は、タイヤの周方向 (回転方向Ｑ）へ相互に平行に延在
させた複数本の第１周方向溝2L,2R および第２周方向溝
3L,3Rと、トレッドの中央部領域からそれぞれのトレッ
ド端へ向け第１・２周方向溝2L,2R,3L,3R に対する交角
を傾向的に次第に変化させながら延在させた複数本の左
右の広幅傾斜溝4L,4R とを備えている。The tread tread portion T of the illustrated tire 1 has a plurality of first circumferential grooves 2L, 2R and second circumferential grooves extending in parallel to each other in the tire circumferential direction (rotational direction Q).
3L, 3R and a plurality of left and right extending from the central region of the tread toward the respective tread ends while gradually changing the intersection angle with the first and second circumferential grooves 2L, 2R, 3L, 3R. It has wide inclined grooves 4L and 4R.
【００１５】更に、トレッド踏面部Ｔには、図３Ａ、Ｂ
に示す如くタイヤの負荷転動時に溝壁5 が互いに接触す
る例えば0.6mm 程度の開口幅6 を有する複数本の左右の
狭幅傾斜溝7L,7R を、前述した第１、２周方向溝2L,2R,
3L,3R に対し、前記広幅傾斜溝4L,4Rとは逆方向への交
角を有して延在させている。また、前記左右の狭幅傾斜
溝7L,7R の周方向３ピッチ毎に、図４Ａ、Ｂで示す如く
タイヤの負荷転動時に溝壁8 が互いに接触しない例えば
1.0mm 程度の開口幅9 を有する中間幅傾斜溝10L,10R を
備えることにより、左右のバランスとアグレッシブ感を
演出しているとともに、操縦安定性を確保している。Further, the tread tread portion T is shown in FIGS.
As shown in Fig. 7, the left and right narrow groove grooves 7L and 7R having the opening width 6 of, for example, about 0.6 mm, which the groove walls 5 contact with each other during load rolling of the tire, are connected to the above-mentioned first and second circumferential grooves 2L. , 2R,
With respect to 3L and 3R, the wide inclined grooves 4L and 4R are extended with an angle of intersection in the opposite direction. Also, as shown in FIGS. 4A and 4B, the groove walls 8 do not come into contact with each other at every three pitches in the circumferential direction of the left and right narrow inclined grooves 7L and 7R, for example.
By equipping the intermediate width inclined grooves 10L and 10R with the opening width 9 of about 1.0 mm, the balance between left and right and aggressive feeling are produced, and the steering stability is secured.
【００１６】更に、前記左右の広幅傾斜溝4L,4R はトレ
ッドの中央部領域において図２に示す如く周方向1/2 ピ
ッチずらされているとともに該溝長手方向一端11L,11R
が閉鎖されている。すなわち、広幅傾斜溝4L,4R のピッ
チをＰとすると、トレッドの中央部において図２に示す
如くP/2 ピッチずらされるとともに、一端11L,11R が閉
鎖され、これによって、図１に示す如くタイヤ中心線Ｏ
−Ｏの左右対称位置に形成された第１周方向溝2L,2R で
区画されたセンター陸部12は該溝2L,2R に周方向交互に
広幅傾斜溝4L,4R が開口されるとともに一端11L,11R が
クローズされた所謂センターリブ化されてセンター陸部
12の剛性を向上しているとともに、偏摩耗を防止してい
る。Furthermore, the left and right of the wide inclined grooves 4L, 4R are groove longitudinal end 11L together are offset as shown in FIG. 2 circumferentially 1/2 pitch in the center area of the tread, 11R
Is closed. That is, when the pitch of the wide inclined grooves 4L, 4R is P, the center of the tread is displaced by P / 2 pitch as shown in FIG. 2 and one end 11L, 11R is closed, whereby the tire is Center line O
The center land portion 12 defined by the first circumferential grooves 2L and 2R formed at symmetrical positions of -O has the wide-width inclined grooves 4L and 4R alternately opened in the circumferential direction in the grooves 2L and 2R and the one end 11L. The so-called center rib with the 11R closed
The rigidity of 12 is improved and uneven wear is prevented.
【００１７】第１周方向溝2L,2R の左右方向外方に位置
してタイヤ中心線Ｏ−Ｏの左右対称位置に第２周方向溝
3L,3R が配置されており、ここに、第１・２周方向溝2
L,2R,3L,3R によって区画されたサイド陸部13L,13R を
備え、該サイド陸部13L,13Rは広幅傾斜溝4L,4R の一端
が閉塞されていることからリブ化されていて陸部剛性を
向上し、センター陸部12と相まってトレッド中央部領域
の陸部剛性を確保し、操縦安定性を確保しているととも
に、第１周方向溝2L,2R が第２周方向溝3L,3R よりも溝
幅が 125％程度大きくされることによって排水性を向上
している。The second circumferential grooves are located outwardly of the first circumferential grooves 2L and 2R in the left-right direction and symmetrically with respect to the tire center line OO.
3L and 3R are arranged, and the 1st and 2nd circumferential groove 2
It is equipped with side land portions 13L, 13R divided by L, 2R, 3L, 3R, and the side land portions 13L, 13R are ribbed because one end of the wide inclined grooves 4L, 4R is closed. The rigidity is improved and the rigidity of the land in the central area of the tread is secured together with the center land 12 to ensure the steering stability, and the first circumferential grooves 2L and 2R are replaced by the second circumferential grooves 3L and 3R. The drainage is improved by increasing the groove width by about 125%.
【００１８】すなわち、左右のサイド陸部13L,13R にお
いて、広幅傾斜溝4L,4R はその溝長手方向一端14L,14R
が第１周方向溝2L,2R に至らず閉塞されており、これに
より、サイド陸部13L,13R はリブ化されているとともに
センター陸部12における広幅傾斜溝4L,4R と同様に、陸
部のエッジ効果、すなわち、ウエット路面に対する水切
効果、氷雪路に対する喰込力などを大きくしている。That is, in the left and right side land portions 13L, 13R, the wide inclined grooves 4L, 4R have one end 14L, 14R in the groove longitudinal direction.
Is closed before reaching the first circumferential grooves 2L, 2R, and as a result, the side land portions 13L, 13R are formed into ribs and, like the wide inclined grooves 4L, 4R in the center land portion 12, the land portions are closed. The edge effect, that is, the draining effect on the wet road surface and the biting force on the ice and snow road are increased.
【００１９】更に、狭幅傾斜溝7L,7R において、センタ
ー陸部12、サイド陸部13L,13R の各閉塞一端11L,11R,14
L,14R は、図３Ｂに示す如く溝底には、タイヤの負荷時
において該溝7L,7R の開口幅6 が閉じられても第１周方
向溝2L,2R に連通する拡溝部15を所謂球根形状として形
成しており、これによって、パターンノイズの低減を図
るとともに排水性を確保している。Further, in the narrow inclined grooves 7L, 7R, the closed ends 11L, 11R, 14 of the center land portion 12 and the side land portions 13L, 13R are closed.
As shown in FIG. 3B, the L, 14R has a so-called groove portion 15 at the bottom of the groove which communicates with the first circumferential groove 2L, 2R even when the opening width 6 of the groove 7L, 7R is closed when the tire is loaded. It is shaped like a bulb, which reduces pattern noise and ensures drainage.
【００２０】タイヤのショルダ部分においては、第２周
方向溝3L,3Rを広幅傾斜溝4L,4R とによって区画された
ショルダーブロック16L,16R よりなるショルダーブロッ
ク列とされ、このブロック16L,16R には狭幅傾斜溝7L,7
R を有するものと中間傾斜溝10L,10R を有するものとが
ある。In the shoulder portion of the tire, the second circumferential groove 3L, 3R is a shoulder block row composed of shoulder blocks 16L, 16R partitioned by wide slanted grooves 4L, 4R. Narrow slant groove 7L, 7
Some have R and some have intermediate inclined grooves 10L and 10R.
【００２１】[0021]
【発明の効果】本発明は以上の通りであり、ドライ路
面、ウエット路面に対する操縦安定性は、トレッド中央
部領域の陸部を所謂リブ化することによって剛性を向上
することによって充分確保しつつパターンノイズを大幅
に低減でき、従って、乗用車用ラジアルタイヤとして実
益大である。The present invention is as described above, and the steering stability on a dry road surface and a wet road surface is sufficiently secured by improving the rigidity by so-called ribs on the land portion in the central region of the tread, and the pattern is ensured. Noise can be greatly reduced, and therefore, it is of great benefit as a radial tire for passenger cars.
【図１】本発明タイヤの実施例を示すトレッドパターン
の展開平面図である。FIG. 1 is a developed plan view of a tread pattern showing an embodiment of a tire of the present invention.
【図２】図１のピッチバリエーションを説明する平面図
である。FIG. 2 is a plan view illustrating a pitch variation of FIG.
【図３】狭幅傾斜溝の断面図である。FIG. 3 is a cross-sectional view of a narrow inclined groove.
【図４】中間幅傾斜溝の断面図である。FIG. 4 is a sectional view of an intermediate width inclined groove.
1 タイヤ 2L 第１周方向溝 2R 第１周方向溝 3L 第２周方向溝 3R 第２周方向溝 4L 広幅傾斜溝 4R 広幅傾斜溝 7L 狭幅傾斜溝 7R 狭幅傾斜溝 10L 中間幅傾斜溝 10R 中間幅傾斜溝 15 拡溝部 1 Tire 2L 1st circumferential groove 2R 1st circumferential groove 3L 2nd circumferential groove 3R 2nd circumferential groove 4L Wide tilt groove 4R Wide tilt groove 7L Narrow tilt groove 7R Narrow tilt groove 10L Middle width tilt groove 10R Intermediate-width inclined groove 15 Expanded groove
Claims (3)
た複数本の周方向溝(2L)(2R)(3L)(3R)と、トレッドの中
央部領域からそれぞれのトレッド端へ向け周方向溝(2L)
(2R)(3L)(3R)に対する交角を傾向的に次第に変化させな
がら延在させた複数本の左右の広幅傾斜溝(4L)(4R)とを
トレッド踏面部 (Ｔ) に備え、タイヤの負荷転動時に溝
壁(5) が互いに接触する程度の開口幅(6) を有する複数
本の左右の狭幅傾斜溝(7L)(7R)を、周方向溝(2L)(2R)(3
L)(3R)に対し、前記広幅傾斜溝(4L)(4R)とは逆方向への
交角を有して延在させている空気入りタイヤにおいて、
前記左右の狭幅傾斜溝(7L)(7R)の周方向３ピッチ毎に、
タイヤの負荷転動時に溝壁(8) が互いに接触しない程度
の開口幅(9) を有する中間幅傾斜溝(10L)(10R)を備え、
前記左右の広幅傾斜溝(4L)(4R)はトレッドの中央部領域
において周方向 1/2 ピッチずらされているとともに該溝
長手方向一端(11L)(11R)が閉鎖されていることを特徴と
する空気入りタイヤ。1. A tire extending in a circumferential direction parallel to each other.
Inside the tread with multiple circumferential grooves (2L) (2R) (3L) (3R)
Circumferential groove (2L) from the central area to each tread edge
Do not gradually change the intersection angle with (2R) (3L) (3R).
A plurality of left and right wide slanted grooves (4L) (4R)
The tread tread (T) is equipped with a groove when the tire rolls under load.
A number of openings (6) that allow the walls (5) to touch each other
Set the narrow grooves (7L) (7R) on the left and right of the book to the circumferential grooves (2L) (2R) (3
L) (3R), in the direction opposite to the wide inclined groove (4L) (4R)
In a pneumatic tire extending with an intersection angle,
For each 3 pitches in the circumferential direction of the left and right narrow inclined grooves (7L) (7R),
To the extent that the groove walls (8) do not touch each other when the tire rolls under load
It has an intermediate width inclined groove (10L) (10R) with an opening width (9) of
The left and right wide inclined grooves (4L) (4R) are central regions of the tread.
In the circumferential direction 1/2The groove is shifted along with the pitch
Characterized by closing one end (11L) (11R) in the longitudinal direction
Pneumatic tire to do.
(4R)の閉鎖されている溝長手方向一端(11L)(11R)に、該
閉鎖部分を周方向溝(2L)(2R)に連通する左右の狭幅傾斜
溝(14L)(14R)を有し、該溝(14L)(14R)の溝底には、該溝
(14L)(14R)の開口幅(6) が閉じられても周方向溝(2L)(2
R)に連通する拡溝部(15)を有し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。2. The left and right wide inclined grooves (4L) according to claim 1.
(4R) has a closed groove longitudinal end (11L) (11R), left and right narrow groove (14L) (14R) connecting the closed portion to the circumferential groove (2L) (2R). The groove bottom of the groove (14L) (14R)
Even if the opening width (6) of (14L) (14R) is closed, the circumferential groove (2L) (2
The pneumatic tire according to claim 1, wherein the pneumatic tire has a groove portion (15) communicating with R).
(3R)は、トレッドの中央部領域に位置する左右の第１周
方向溝(2L)(2R)と、この溝(2L)(2R)の左右方向外方に位
置する左右の第２周方向溝(3L)(3R)とからなり、第１周
方向溝(2L)(2R)は第２周方向溝(3L)(3R)より溝幅が広く
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。3. The circumferential groove (2L) (2R) (3L) according to claim 1.
(3R) is the left and right first circumferential grooves (2L) (2R) located in the central area of the tread, and the left and right second circumferential directions located outside the grooves (2L) (2R) in the left-right direction. The groove (3L) (3R), wherein the first circumferential groove (2L) (2R) is wider than the second circumferential groove (3L) (3R). 1. The pneumatic tire according to 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3230524A JP3062312B2 (en) | 1991-09-10 | 1991-09-10 | Pneumatic tire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3230524A JP3062312B2 (en) | 1991-09-10 | 1991-09-10 | Pneumatic tire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0569706A true JPH0569706A (en) | 1993-03-23 |
| JP3062312B2 JP3062312B2 (en) | 2000-07-10 |
Family
ID=16909097
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3230524A Expired - Lifetime JP3062312B2 (en) | 1991-09-10 | 1991-09-10 | Pneumatic tire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3062312B2 (en) |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5851322A (en) * | 1996-01-30 | 1998-12-22 | Sumitomo Rubber Industries, Ltd. | Pneumatic tire including groove and sipe extending along parabola |
| WO2001008906A1 (en) * | 1999-07-30 | 2001-02-08 | Bridgestone Corporation | Pneumatic tire |
| US6352091B1 (en) * | 1998-12-07 | 2002-03-05 | Sumitomo Rubber Industries, Ltd. | Vehicle tire having unidirectional pattern with mirror image patterns of outer parts being circumferentially shifted |
| JP2002114010A (en) * | 2000-10-10 | 2002-04-16 | Bridgestone Corp | Pneumatic tire |
| WO2005068226A1 (en) * | 2004-01-13 | 2005-07-28 | Bridgestone Corporation | Pneumatic tire |
| JP2008260423A (en) * | 2007-04-12 | 2008-10-30 | Bridgestone Corp | Pneumatic tire and rotation method for the same tire |
| US20100059156A1 (en) * | 2008-09-11 | 2010-03-11 | Cambron Anne-France Gabrielle | Pneumatic tire |
| US20110139325A1 (en) * | 2009-12-11 | 2011-06-16 | Joseph Thomas Janesh | Tire tread having serrated grooves |
| WO2011080969A1 (en) * | 2009-12-28 | 2011-07-07 | 株式会社ブリヂストン | Pneumatic tire |
| JP2011143898A (en) * | 2010-01-18 | 2011-07-28 | Bridgestone Corp | Pneumatic tire |
| JP2013112061A (en) * | 2011-11-25 | 2013-06-10 | Sumitomo Rubber Ind Ltd | Pneumatic tire |
| US20160144664A1 (en) * | 2014-11-20 | 2016-05-26 | Sumitomo Rubber Industries Ltd. | Pneumatic tire |
| CN105848930A (en) * | 2014-01-29 | 2016-08-10 | 横滨橡胶株式会社 | Pneumatic tire |
| WO2019021723A1 (en) * | 2017-07-27 | 2019-01-31 | 株式会社ブリヂストン | Tire |
| EP3702176A1 (en) * | 2019-02-28 | 2020-09-02 | Sumitomo Rubber Industries, Ltd. | Tire |
| US12049110B2 (en) | 2017-10-03 | 2024-07-30 | The Yokohama Rubber Co., Ltd. | Pneumatic tire |
-
1991
- 1991-09-10 JP JP3230524A patent/JP3062312B2/en not_active Expired - Lifetime
Cited By (32)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5851322A (en) * | 1996-01-30 | 1998-12-22 | Sumitomo Rubber Industries, Ltd. | Pneumatic tire including groove and sipe extending along parabola |
| US6352091B1 (en) * | 1998-12-07 | 2002-03-05 | Sumitomo Rubber Industries, Ltd. | Vehicle tire having unidirectional pattern with mirror image patterns of outer parts being circumferentially shifted |
| US6796347B1 (en) | 1999-07-30 | 2004-09-28 | Bridgestone Corporation | Pneumatic tire including auxiliary grooves |
| EP1125769A1 (en) * | 1999-07-30 | 2001-08-22 | Bridgestone Corporation | Pneumatic tire |
| EP1125769A4 (en) * | 1999-07-30 | 2002-05-22 | Bridgestone Corp | Pneumatic tire |
| WO2001008906A1 (en) * | 1999-07-30 | 2001-02-08 | Bridgestone Corporation | Pneumatic tire |
| JP2002114010A (en) * | 2000-10-10 | 2002-04-16 | Bridgestone Corp | Pneumatic tire |
| JP4563567B2 (en) * | 2000-10-10 | 2010-10-13 | 株式会社ブリヂストン | Pneumatic tire |
| WO2005068226A1 (en) * | 2004-01-13 | 2005-07-28 | Bridgestone Corporation | Pneumatic tire |
| US7604030B2 (en) | 2004-01-13 | 2009-10-20 | Bridgestone Corporation | Pneumatic tire with tread having rib shaped land section, lug grooves and sipes |
| JP2008260423A (en) * | 2007-04-12 | 2008-10-30 | Bridgestone Corp | Pneumatic tire and rotation method for the same tire |
| US20100059156A1 (en) * | 2008-09-11 | 2010-03-11 | Cambron Anne-France Gabrielle | Pneumatic tire |
| CN101934685A (en) * | 2008-09-11 | 2011-01-05 | 固特异轮胎和橡胶公司 | Pneumatic tire |
| US8393365B2 (en) * | 2009-12-11 | 2013-03-12 | The Goodyear Tire & Rubber Company | Tire tread having serrated grooves |
| US20110139325A1 (en) * | 2009-12-11 | 2011-06-16 | Joseph Thomas Janesh | Tire tread having serrated grooves |
| WO2011080969A1 (en) * | 2009-12-28 | 2011-07-07 | 株式会社ブリヂストン | Pneumatic tire |
| US9290061B2 (en) | 2009-12-28 | 2016-03-22 | Bridgestone Corporation | Pneumatic tire |
| JP2011143898A (en) * | 2010-01-18 | 2011-07-28 | Bridgestone Corp | Pneumatic tire |
| JP2013112061A (en) * | 2011-11-25 | 2013-06-10 | Sumitomo Rubber Ind Ltd | Pneumatic tire |
| US20170001479A1 (en) * | 2014-01-29 | 2017-01-05 | The Yokohama Rubber Co., Ltd. | Pneumatic Tire |
| CN105848930A (en) * | 2014-01-29 | 2016-08-10 | 横滨橡胶株式会社 | Pneumatic tire |
| US9770951B2 (en) | 2014-01-29 | 2017-09-26 | The Yokohama Rubber Co., Ltd. | Pneumatic tire |
| CN105620205A (en) * | 2014-11-20 | 2016-06-01 | 住友橡胶工业株式会社 | Pneumatic tire |
| US20160144664A1 (en) * | 2014-11-20 | 2016-05-26 | Sumitomo Rubber Industries Ltd. | Pneumatic tire |
| US10226968B2 (en) * | 2014-11-20 | 2019-03-12 | Sumitomo Rubber Industries Ltd. | Pneumatic tire |
| WO2019021723A1 (en) * | 2017-07-27 | 2019-01-31 | 株式会社ブリヂストン | Tire |
| JP2019026018A (en) * | 2017-07-27 | 2019-02-21 | 株式会社ブリヂストン | tire |
| US12049110B2 (en) | 2017-10-03 | 2024-07-30 | The Yokohama Rubber Co., Ltd. | Pneumatic tire |
| DE112018004404B4 (en) | 2017-10-03 | 2025-02-13 | The Yokohama Rubber Co., Ltd. | pneumatic tires |
| EP3702176A1 (en) * | 2019-02-28 | 2020-09-02 | Sumitomo Rubber Industries, Ltd. | Tire |
| CN111619290A (en) * | 2019-02-28 | 2020-09-04 | 住友橡胶工业株式会社 | Tyre for vehicle wheels |
| CN111619290B (en) * | 2019-02-28 | 2024-03-22 | 住友橡胶工业株式会社 | Tire with a tire body |
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| Publication number | Publication date |
|---|---|
| JP3062312B2 (en) | 2000-07-10 |
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