KR100879384B1 - Asymmetric tread pattern of high performance tire - Google Patents

Abstract

A high performance tire having asymmetric tread patterns is provided to improve draining performance and reduce wear by forming tread patterns asymmetrically. A tread center part(160) has a first longitudinal groove(10) passing the center of a tire in the width direction and defining a central rib(110) and an inner intermediate rib, and a second longitudinal groove(20) defining an outer intermediate rib at a side of the central rib. A tread shoulder part(170) has a third longitudinal groove(30) defining an inner shoulder rib(140), and a fourth longitudinal groove(40) defining an outer shoulder rib. A road surface contacting area of the tread center part is smaller than that of the tread shoulder part asymmetrically.

Description

High-performance tire with an asymmetric tread pattern {ASYMMETRIC TREAD PATTERN OF HIGH PERFORMANCE TIRE}

The present invention relates to a high performance tire having an asymmetric tread pattern, and more particularly, to a high performance tire having an asymmetric tread pattern which improves the drainage performance and wear resistance of the tire.

As is well known, high-performance tires among pneumatic tires are capable of high-speed running and have a larger block design than general passenger tires to maximize handling and braking performance.

However, such high-performance tires have a problem in that drainage performance and wear resistance are somewhat lower than general tires.

SUMMARY OF THE INVENTION In order to solve the above problems, an object of the present invention is to provide a high performance tire having an asymmetric tread pattern that can improve the drainage performance and wear resistance of the high performance tire by forming and using an asymmetric tread pattern.

In order to achieve the above object, a high-performance tire having an asymmetric tread pattern of the present invention is divided into a central rib and an inner middle rib by a first longitudinal groove passing through a tire width center, and the second longitudinal groove is formed on the other side of the central rib. A tread center portion in which the outer middle rib portion is partitioned, and a tread shoulder portion in which the inner shoulder rib is partitioned by the third longitudinal groove outside the inner middle rib portion, and the outer shoulder rib is partitioned by the fourth longitudinal groove outside the outer middle rib portion. And the ground area of the tread shoulder portion is larger than the ground area of the tread center portion.

 The ground area of the tread shoulder portion may include 115% of the ground area of the center of the tread.

 The central rib may be notched at both edges. The width of the central rib may comprise 20 mm.

 The width of the inner middle ribs may include 21% of the total width of the tread of the tire, and the outer middle ribs may be 9% of the total width of the tread of the tire.

 The inner middle rib portion and the outer middle rib portion are made up of a plurality of blocks partitioned by transverse grooves, and the blocks may be formed with at least one sipe.

 The inner middle rib may further include a semi longitudinal groove for re-departing the block laterally.

 The outer shoulder rib can have greater rigidity than the inner shoulder rib.

 The outer shoulder ribs and the inner shoulder ribs consist of a number of blocks partitioned by transverse grooves, the blocks of the inner shoulder ribs being repartitioned longitudinally by semi transverse grooves passing through the center, and the blocks of the outer shoulder ribs Semi-lateral grooves may be formed to be offset from each other so that the center portion is connected to each other.

According to the high-performance tire having the asymmetric tread pattern of the present invention, the ground area of the tread shoulder portion is formed to 115% of the ground area of the center of the tread, thereby improving the drainage performance of the center of the tread and preventing step wear of the tread shoulder portion. And an effect of improving wear resistance.

In addition, according to the high-performance tire having an asymmetric tread pattern of the present invention, by forming a central rib continuously in the center to improve the straight running performance of the tire, by forming a notch at regular intervals to prevent early wear of the tire Has an effect.

In addition, according to the high-performance tire having the asymmetric tread pattern of the present invention, the first and second longitudinal grooves between the center rib and the inner middle rib and the outer middle rib improve the straight drainage performance, and the inner and outer middle ribs are transverse By adopting the groove part, the center of the tread has a high rigidity and has the effect of improving drainage performance.

In addition, according to the high-performance tire having an asymmetric tread pattern of the present invention, the outer shoulder rib is formed as an integral block to increase the block stiffness to increase the drainage performance when turning, it is possible to prevent step wear and early wear appearing in large blocks Has the effect.

In addition, according to the anti-tread tread pattern of the high-performance tire of the present invention, the block of the outer shoulder rib has two sub-lateral grooves that are shifted from each other so that the centers are connected to each other, thereby draining performance and wear resistance performance through proper rigid arrangement of the shoulder portion Has the effect to improve.

In addition, according to the high-performance tire having an asymmetric tread pattern of the present invention, the block of the inner shoulder rib that is less loaded than the outer shoulder portion has an effect that can improve the drainage performance by adopting a sub-lateral groove penetrating the center Have

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. The drawings and description are to be regarded as illustrative in nature and not restrictive. Like reference numerals designate like elements throughout the specification.

1 is an enlarged partial front view of a high performance tire having an asymmetric tread pattern according to an embodiment of the present invention.

Referring to Figure 1, the tread pattern of the high-performance tire of the present embodiment is largely composed of the tread center portion 160 and the tread shoulder portion 170.

The center of the tread 160 is divided into a central rib 110 and an inner middle rib 120 by a first longitudinal groove 10 passing through a tire width center, and a second longitudinal groove on the other side of the central rib 10. The outer intermediate rib 130 is partitioned by 20.

In addition, the tread shoulder part 170 is divided into the inner shoulder rib 140 by the third longitudinal groove 30 to the outside of the inner intermediate rib part 120, and the fourth longitudinal groove outward of the outer intermediate rib part 130. The outer shoulder rib 150 is partitioned by 40.

On the other hand, it is preferable that the ground area of the tread shoulder portion 170 is larger than the ground area of the tread central portion 160.

In the present exemplary embodiment, the ground area of the tread shoulder part 170 is 115% of the ground area of the tread central portion 160. Therefore, it is possible to improve the drainage performance of the overall tread central portion 160 of the high-performance tire, and to prevent step wear of the tread shoulder portion 170 and to improve wear resistance.

The center ribs 110 are continuous and formed along the circumferential direction of the tire, and the width of the center ribs 110 is preferably formed to be approximately 20 mm.

Here, when the width of the center rib 110 is less than 20mm, the wear resistance is high while going straight driving, while the straight running performance is reduced, when the width exceeds 20mm, the straight running performance is improved while wear resistance is reduced.

On the other hand, the center rib 110 is formed with notches 112 at both edges that are divided by the first longitudinal groove 10 and the second longitudinal groove 20. Accordingly, by continuously forming the center ribs 110, the straight running performance of the tire may be improved, and the notches 112 may be formed at regular intervals to prevent premature wear of the tire.

The inner middle rib portion 120 and the outer middle rib portion 130 are partitioned by the first longitudinal groove 10 and the second longitudinal groove 20 from the central rib 110 and passing through the width center of the tire, respectively. As defined by the grooves 122 and 132 and the blocks 121 and 131, the drainage performance of the tire in the longitudinal and transverse directions can be improved at the center of the tread. At least one sipe 123 and 133 is formed in each of the blocks 121 and 131.

As such, the width of the inner intermediate rib portion 120 is formed to be larger than the width of the outer intermediate rib portion 130, and the inner intermediate rib portion 120 has a semi-long groove 50 for re-comparting each of the blocks 121 laterally. More).

Meanwhile, the width of the inner middle rib portion 120 may include 21% of the total width of the tread of the tire, and the outer middle rib portion 130 may include 9% of the total width of the tread of the tire. Therefore, the eccentric position of the center rib 110 can be adjusted according to the ratio of the width of the inner intermediate rib 120 and the width of the outer intermediate rib 130.

In the high performance tire having the asymmetric tread pattern of this embodiment, the center of the center rib 110 is eccentrically by the distance to the center of the first longitudinal groove 10 to form an asymmetric tread pattern.

The inner shoulder rib 140 and the outer shoulder rib 150 are composed of a plurality of blocks 141 and 151 partitioned by the horizontal grooves 142 and 152.

Here, the outer shoulder rib 150 is preferably formed having a greater rigidity than the inner shoulder rib 140. Accordingly, the rigidity of the block 151 of the outer shoulder rib 150 that receives more load when turning compared to the block 141 of the inner shoulder rib 140 may be improved to improve drainage performance when turning such as cornering. do.

In the present embodiment, the blocks 141 constituting the inner shoulder rib 140 are repartitioned in the longitudinal direction by a semi-lateral groove 143 passing through the center, and the blocks 151 of the outer shoulder rib 150 are The semi-lateral grooves 153 are formed to be offset so that the centers of the blocks are connected to each other.

As such, the blocks 151 of the outer shoulder rib 150 are integrally formed so that the center portion is connected to each other to increase block stiffness to improve drainage performance when turning, thereby preventing step and early wear appearing in a large block. To be able.

In addition, the blocks 151 of the outer shoulder rib 150 have two sub-lateral grooves that are shifted from each other so that their centers are connected to each other, thereby improving drainage performance and wear resistance through proper rigid arrangement of the shoulder parts.

In addition, the sub-lateral groove 143 penetrating the center of the blocks 141 of the inner shoulder rib 140, which receives less load than the outer shoulder rib portion 150, may be adopted to improve drainage performance.

Test Example

Hereinafter, Table 1 shows the experimental results of comparing the drainage performance of the pneumatic tire and the 225 / 55R17 tire according to an embodiment of the present invention.

As shown in Table 1, as a result of the comparative experiment of the high-performance tire and the general tire (225 / 55R17) having an asymmetric tread pattern according to the present embodiment, the drainage performance of 0.7% and 0.3% respectively in the straight driving and the turning driving such as cornering are obtained It can be seen that the improvement.

Although the preferred embodiments of the present invention have been described above, the present invention is not limited thereto, and various modifications or changes can be made within the scope of the claims and the detailed description of the invention and the accompanying drawings. In addition, it is natural that it belongs to the scope of the present invention.

1 is an enlarged partial front view of a high performance tire having an asymmetric tread pattern according to an embodiment of the present invention.

<Description of Main Reference Signs>

10: first longitudinal groove 20: second longitudinal groove

30: third longitudinal groove 40: fourth longitudinal groove

50: semi longitudinal groove 110: center rib

112: notch 120: inner middle rib

130: outer intermediate rib 121, 131: block

122, 132: horizontal groove 123, 133: sipe

140: inner shoulder rib 150: outer shoulder rib

141, 151; Blocks 142, 152: cross groove

143, 153: semi-groove 160: center of tread

170: tread shoulder

Claims (9)

A tread central portion defined by the first longitudinal groove passing through the tire width center, and having a central rib and an inner intermediate rib portion defined by the second longitudinal groove on the other side of the central rib; And An inner shoulder rib is partitioned by a third longitudinal groove outwardly of the inner middle rib portion, and a tread shoulder portion is partitioned by an outer shoulder rib by a fourth longitudinal groove outside the outer middle rib portion; A high performance tire having an asymmetric tread pattern in which the ground area of the tread shoulder is larger than the ground area of the center of the tread. In claim 1, And a tread shoulder portion has a ground area of 115% of the tread center's ground area. In claim 1, The center rib has a non-symmetrical tread pattern is formed notched at both edges. In claim 3, A high performance tire having an asymmetric tread pattern, wherein the center rib has a width of 20 mm. In claim 1, And wherein the inner middle rib portion is 21% of the total width of the tread of the tire and the outer middle rib portion is 9% of the total width of the tread of the tire. In claim 5, The inner middle rib portion and the outer middle rib portion is composed of a plurality of blocks partitioned by a horizontal groove, Said block having an asymmetric tread pattern in which at least one sipe is formed. In claim 6, And the inner middle rib portion has an asymmetric tread pattern further comprising a semi longitudinal groove for re-departing the block in a transverse direction. In claim 1, And the outer shoulder rib has an asymmetric tread pattern having greater rigidity than the inner shoulder rib. In claim 8, The outer shoulder ribs and the inner shoulder ribs are composed of a plurality of blocks partitioned by transverse grooves, The blocks of the inner shoulder ribs are repartitioned longitudinally by semi lateral grooves passing through the center, The block of the outer shoulder rib is a high performance tire having an asymmetric tread pattern is formed with the semi-lateral grooves are offset from each other so that the center portion is connected to each other.

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