KR101302548B1 - Pneumatic tire improved hydro-planning performance - Google Patents

Pneumatic tire improved hydro-planning performance Download PDF

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Publication number
KR101302548B1
KR101302548B1 KR1020110110607A KR20110110607A KR101302548B1 KR 101302548 B1 KR101302548 B1 KR 101302548B1 KR 1020110110607 A KR1020110110607 A KR 1020110110607A KR 20110110607 A KR20110110607 A KR 20110110607A KR 101302548 B1 KR101302548 B1 KR 101302548B1
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South Korea
Prior art keywords
longitudinal groove
protrusions
pneumatic tire
shaped
tire
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KR1020110110607A
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Korean (ko)
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KR20130046188A (en
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지용우
조인형
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한국타이어 주식회사
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    • 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
    • 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
    • B60C11/0306—Patterns comprising block rows or discontinuous ribs
    • B60C11/0309—Patterns comprising block rows or discontinuous ribs further characterised by the groove cross-section
    • 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
    • B60C11/0327—Tread patterns characterised by special properties of the tread pattern
    • 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
    • B60C11/04—Tread patterns in which the raised area of the pattern consists only of continuous circumferential ribs, e.g. zig-zag
    • B60C11/042—Tread patterns in which the raised area of the pattern consists only of continuous circumferential ribs, e.g. zig-zag further characterised by the groove cross-section
    • 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
    • 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
    • B60C2011/0341—Circumferential grooves
    • B60C2011/0346—Circumferential grooves with zigzag shape
    • 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
    • B60C2011/133—Tread patterns characterised by the groove cross-section, e.g. for buttressing or preventing stone-trapping with special features of the groove walls comprising recesses
    • 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
    • B60C2011/1338—Tread patterns characterised by the groove cross-section, e.g. for buttressing or preventing stone-trapping with special features of the groove walls comprising protrusions
    • 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
    • B60C11/1353—Tread patterns characterised by the groove cross-section, e.g. for buttressing or preventing stone-trapping with special features of the groove bottom
    • B60C2011/1361—Tread patterns characterised by the groove cross-section, e.g. for buttressing or preventing stone-trapping with special features of the groove bottom with protrusions extending from the groove bottom

Abstract

본 발명은 차량용 공기입 타이어에 관한 것으로, 특히 빗길과 같이 물이 고인 노면에서 하이드로 플래닝(hydro-planning) 성능개선과 그루브 크랙(Groove crack)에 대한 보강구조를 가진 하이드로 플래닝 성능을 향상시킨 공기입 타이어에 관한 것이다.
이를 위해 본 발명은 노면(101)에 접하는 블록(1)과 타이어 원주방향으로 배열된 요입형 종그루브(2) 및 이 종그루브(2)에 대해 횡방향으로 배열되는 횡그루브(3)들을 구비한 트레드(100)를 갖춘 공기입 타이어에 있어서, 상기 종그루브(2)의 바닥면(2a)과 측면(2b)에는 단면이 U형 돌기(4)들이 등간격으로 배치되되, 상기 U형 돌기(4)는 종그루브(2)의 바닥면(2a)에 연결된 밑면 돌출부(4a)와 종그루브(2)의 양쪽 측면(2b)에 연결된 측면 돌출부(4b)들이 연속 연결되고, 이 U형 돌기(4)의 밑면 돌출부(4a)들의 높낮이가 파형 형태의 궤적으로 연속 배치되어 이루어진 구조로 되어 있다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pneumatic tire for a vehicle. In particular, the present invention relates to a pneumatic tire having improved hydro-planning performance and reinforcing structure for groove cracks in water, such as rain. It's about tires.
To this end, the present invention includes a block 1 in contact with the road surface 101, a recessed longitudinal groove 2 arranged in the circumferential direction of the tire, and transverse grooves 3 arranged laterally with respect to the longitudinal groove 2. In the pneumatic tire having a tread 100, the U-shaped projections 4 are arranged at equal intervals on the bottom surface 2a and the side surface 2b of the longitudinal groove 2, the U-shaped projections (4) is a bottom projection 4a connected to the bottom surface 2a of the longitudinal groove 2 and side projections 4b connected to both side surfaces 2b of the longitudinal groove 2, and the U-shaped projections are continuously connected. The heights of the bottom protrusions 4a of (4) are arranged so as to be continuously arranged in the locus of the wave form.

Description

하이드로 플래닝 성능을 향상시킨 공기입 타이어{Pneumatic tire improved hydro-planning performance}Pneumatic tire improved hydro-planning performance

본 발명은 차량용 공기입 타이어에 관한 것으로, 특히 빗길과 같이 물이 고인 노면에서 하이드로 플래닝(hydro-planning) 성능개선과 그루브 크랙(Groove crack)에 대한 보강구조를 가진 하이드로 플래닝 성능을 향상시킨 공기입 타이어에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pneumatic tire for a vehicle. In particular, the present invention relates to a pneumatic tire having improved hydro-planning performance and reinforcing structure for groove cracks in water, such as rain. It's about tires.

일반적이 타이어는 도 1에 도시된 바와 같이 노면(101)에 접촉하는 트레드(100)에 타이어의 원주방향으로 여러 개의 종그루브(2)와 이 종그루브(2)에 대해 횡방향으로 배치된 횡그루브(3)들에 의해 구획된 블록(1)들이 배치되어 있는데, 상기 타이어의 원주방향으로 배치되는 종그루브(2)의 단면은 사다리꼴 단면구조 또는 반타원형 단면구조로 매끈하게 요입 형성되어 있기 때문에 하이드로 플래닝 성능의 개선이 요구되었다.In general, the tire has a plurality of longitudinal grooves 2 in the circumferential direction of the tire and a transverse direction with respect to the longitudinal grooves 2 on the tread 100 contacting the road surface 101 as shown in FIG. 1. Blocks 1 partitioned by grooves 3 are arranged, and the cross section of the longitudinal grooves 2 arranged in the circumferential direction of the tire is smoothly formed in a trapezoidal cross-section or semi-elliptical cross-sectional structure. An improvement in hydroplaning performance was required.

여기서 하이드로 플래닝은 차량이 빗길과 같이 물이 고인 노면을 고속으로 주행할 때 발생할 수 있는 수막에 의한 부유현상을 말하며, 이는 노면과 타이어 트레드 사이에 물이 유입되어 마찰이 극단적으로 감소되는 현상을 의미하고, 이런 경우 타이어가 수면 위를 주행하는 것과 같은 현상을 초래하므로 조종 본능의 상태에 빠지게 된다.Here, hydroplaning refers to the floating phenomenon caused by the water film that can occur when the vehicle is traveling at high speed on a road with rain, such as rain, which means that friction is reduced due to the inflow of water between the road and the tire tread. In this case, the tire causes a phenomenon such as driving on the surface of the water, thus falling into a state of steering instinct.

종래에도 이러한 문제점을 해결하기 위해 도 6에 도시된 바와 같이 트레드(100)의 블록(1)과 블록(1) 사이에 배치되는 타이어 원주방향의 종그루브(2) 바닥면에 쐐기형 돌기(11)들을 원주방향으로 배열시킨 구조를 갖추고 있는데, 이러한 쐐기형 돌기(11)들을 타이어 원주방향을 따라 종그루브(2)의 바닥면에 적용할 경우 트레일링 에지(Trailing edge)에서 물을 더 빨리 배수할 수 있는 장점을 갖추게 되어 타이어의 하이드로 플래닝 성능에는 도움을 줄 수 있으나, 버클링(Buckling)으로 인한 그루브 크랙에는 취약한 단점을 가지고 있으며, 또한 형상이 방향성을 갖고 있기 때문에 대칭 타이어에 적용할 경우에는 그 효과가 적다고 할 수 있었다.In order to solve this problem in the related art, as shown in FIG. 6, the wedge-shaped protrusion 11 is formed on the bottom surface of the longitudinal groove 2 of the tire circumferential direction disposed between the block 1 and the block 1 of the tread 100. ) Circumferentially arranged, when the wedge-shaped projections 11 are applied to the bottom surface of the longitudinal groove 2 along the tire circumferential direction, the water is drained faster from the trailing edge. It has the advantage of being able to help the hydroplaning performance of tires, but it has the disadvantage of being weak in groove cracks due to buckling, and because of its directional shape, The effect was small.

이에 본 발명은 상기와 같은 종래 문제점을 감안하여 발명된 것으로, 타이어의 하이드로 플래닝 성능뿐만 아니라 그루브 크랙 강성을 보강한 하이드로 플래닝 성능을 향상시킨 공기입 타이어를 제공함에 그 목적이 있다.Accordingly, the present invention has been made in view of the above-mentioned conventional problems, and an object thereof is to provide a pneumatic tire having improved hydroplaning performance as well as hydroplaning stiffness of the tire as well as hydroplaning performance.

상기와 같은 목적을 달성하기 위한 본 발명은 노면에 접하는 블록과 타이어 원주방향으로 배열된 요입형 종그루브들 및 이 종그루브에 대해 횡방향으로 배열되는 횡그루브들을 구비한 트레드를 갖춘 공기입 타이어에 있어서, 상기 종그루브의 바닥면과 측면에는 단면이 U형 돌기들이 등간격으로 배치되되, 상기 U형 돌기는 종그루브의 바닥면에 연결된 밑면 돌출부와 이 종그루브의 양쪽 측면에 연결된 측면 돌출부들이 연속 연결되고, 상기 U형 돌기의 밑면 돌출부들의 높낮이가 파형 형태의 궤적으로 연속 배치되어 이루어진 구조로 되어 있다.The present invention for achieving the above object is a pneumatic tire having a tread having a block in contact with the road surface and the recessed longitudinal grooves arranged in the circumferential direction of the tire and the transverse grooves arranged laterally with respect to the longitudinal groove. In the bottom groove and the side surface of the longitudinal groove, the U-shaped protrusions are arranged at equal intervals, and the U-shaped protrusion is connected to the bottom protrusion connected to the bottom surface of the longitudinal groove and the side protrusions connected to both sides of the longitudinal groove. Connected, the height of the bottom projections of the U-shaped projection is a structure consisting of a continuous arrangement in the form of a locus of the waveform.

이러한 본 발명에 따른 공기입 타이어는 높낮이가 다른 연속된 U형 돌기들이 종그루브의 바닥면과 측면에서 횡방향으로 배치되어 트레드 표면의 유량을 종그루브 홈 내부로 빠르게 유입시키어 신속하게 배출하는 하이드로 플래닝 효과를 가지면서 종그루브의 바닥면과 모서리가 만나는 부분을 보강시키기 때문에 그루브 크랙을 방지하는 보강재 기능을 갖춘 구조를 가지게 된다.The pneumatic tire according to the present invention is a hydro-planing in which the continuous U-shaped protrusions having different heights are disposed in the transverse direction at the bottom and side of the longitudinal groove to quickly flow the tread surface into the longitudinal groove to quickly discharge the hydroplaning. It has a structure with a reinforcement function that prevents groove cracks because it reinforces the point where the bottom groove and the edge of the longitudinal groove meet.

도 1은 통상적인 공기입 타이어의 부분 사시도,
도 2는 본 발명이 적용되는 종그루브(Groove)의 부분 절개 사시도,
도 3은 도 2의 Ⅰ-Ⅰ선 개략 단면도,
도 4는 도 2의 A방향에서 본 U형 돌기들의 밑면 돌기들 궤적을 나타낸 개략 측면도,
도 5는 본 발명이 차량 진행방향에 대해 유량배출 상태를 보여주는 측면도,
도 6은 종래 하이드로 플래닝 성능의 개선을 가진 공기입 타이어에서 원주방향 그루브의 도면이다.1 is a partial perspective view of a conventional pneumatic tire,
2 is a partial cutaway perspective view of a groove (Ggroove) to which the present invention is applied;
3 is a schematic cross-sectional view taken along line II of FIG. 2;
Figure 4 is a schematic side view showing the bottom projections of the bottom projections of the U-shaped projections in the direction A of Figure 2,
Figure 5 is a side view showing a flow rate discharge state with respect to the vehicle running direction of the present invention,
6 is a view of a circumferential groove in a pneumatic tire with an improvement in conventional hydroplaning performance.

이하, 본 발명을 첨부된 예시도면에 의거 상세히 설명한다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

도 2에는 본 발명에 적용된 종그루브의 부분 절개 확대 사시도이다.Figure 2 is a partially cut-away perspective view of the longitudinal groove applied to the present invention.

본 발명은 노면(101)에 접하는 블록(1)과 타이어 원주방향으로 배열된 요입형 종그루브(2) 및 이 종그루브(2)에 대해 횡방향으로 배열되는 횡그루브(3)들을 구비한 트레드(100)를 갖춘 공기입 타이어에 있어서, 상기 종그루브(2)의 바닥면(2a)과 측면(2b)에는 단면이 U형 돌기(4)들이 등간격으로 배치되되, 상기 U형 돌기(4)는 종그루브(2)의 바닥면(2a)에 연결된 밑면 돌출부(4a)와 종그루브(2)의 양쪽 측면(2b)에 연결된 측면 돌출부(4b)들이 연속 연결되고, 이 U형 돌기(4)의 밑면 돌출부(4a)들의 높낮이가 파형 형태의 궤적으로 연속 배치되어 이루어진 구조로 되어 있다.The present invention provides a tread having a block (1) in contact with the road surface (101), a recessed longitudinal groove (2) arranged in the circumferential direction of the tire, and transverse grooves (3) arranged laterally with respect to the longitudinal groove (2). In the pneumatic tire provided with (100), the U-shaped projections 4 are arranged at equal intervals on the bottom surface 2a and the side surface 2b of the longitudinal groove 2, and the U-shaped projections 4 The bottom projection 4a connected to the bottom surface 2a of the longitudinal groove 2 and the side projections 4b connected to both sides 2b of the longitudinal groove 2 are continuously connected, and the U-shaped projection 4 The heights of the bottom protrusions 4a of the) are continuously arranged in the locus of the wave shape.

여기서 상기 U형 돌기(4)는 종그루브(2)가 갖고 있는 고유한 성능에 영향을 미치지 않는 범위의 치수를 갖는데, 이는 U형 돌기(4)의 치수가 지나치게 클 경우, 배수시 장애물 역할을 할 수 있기 때문이다.Here, the U-shaped projections 4 have dimensions in a range that does not affect the inherent performance of the longitudinal grooves 2, which is an obstacle when draining when the U-shaped projections 4 are too large. Because you can.

따라서 도 3에 도시된 바와 같이 상기 U형 돌기(4)의 측면 돌출부(4b) 높이(h1)는 종그루브(2)의 전체 깊이(H)의 50% ~ 100% 범위에서 설정하고, 상기 U형 돌기(4)의 밑면 돌출부(4a)들은 횡방향과 원주방향으로 가변 설정하되, 종그루브(2)의 바닥면(2a)과 측면(2b)을 기준으로 상기 U형 돌기(4) 간의 거리를 0.1mm ~ 1.0mm 이내로 설정하며, 상기 종그루브(2)의 바닥면(2a)과 모서리 부분인 상기 U형 돌기(4) 폭은 0.5mm ~ 2.0mm 이내로 설정하여 보강재 기능을 갖추도록 이루어져 그루브 크랙을 방지할 수 있도록 되어 있다.Therefore, as shown in FIG. 3, the height h 1 of the side protrusion 4b of the U-shaped protrusion 4 is set in a range of 50% to 100% of the total depth H of the longitudinal groove 2. The bottom protrusions 4a of the U-shaped protrusions 4 are variably set in the transverse direction and the circumferential direction, and between the U-shaped protrusions 4 with respect to the bottom surface 2a and the side surface 2b of the longitudinal groove 2. The distance is set within 0.1mm ~ 1.0mm, the width of the U-shaped projection (4) that is the bottom surface (2a) and the edge portion of the longitudinal groove (2) is made to set within 0.5mm ~ 2.0mm to have a reinforcement function It is designed to prevent groove cracks.

또한 본 발명에서는 도 4에 도시된 바와 같이 연속된 U형 돌기(4)의 밑면 돌출부(4a)들이 높낮이의 최소높이와 최대높이 사이의 간격(ℓ) 설정이 하이드로 플래닝 성능과 가장 밀접한 영향을 가지는 관계로, 상기 U형 돌기(4)의 밑면 돌출부(4a)를 최소높이와 최대높이 사이의 간격(ℓ)은 타이어의 블록(1)이 노면(101)에 닿은 접지면적을 고려하여 설정할 수 있으며, 가장 바람직한 간격은 그루브 간의 간격인 대중소 피치 중 가장작은 스몰피치(Small pitch) 폭의 50% ~ 100% 범위에서 설정한다.In addition, in the present invention, as shown in FIG. 4, the bottom protrusions 4a of the continuous U-shaped protrusions 4 have the closest influence between the minimum height and the maximum height of the height and the hydroplaning performance. In relation to this, the distance ℓ between the minimum height and the maximum height of the bottom protrusion 4a of the U-shaped protrusion 4 may be set in consideration of the ground area where the block 1 of the tire touches the road surface 101. The most preferred spacing is set in the range of 50% to 100% of the smallest small pitch width among the small and medium pitches, the spacing between grooves.

이 같은 구조를 갖는 본 발명은 도 5에 도시된 바와 같이 그루브 중앙에 모인 유량은 U형 돌기(4)의 F부위를 통하여 차량진행 방향의 반대쪽 방향으로 유량을 배출하는 펌프 역할을 하도록 되어 있다.In the present invention having such a structure, as shown in FIG. 5, the flow rate collected at the center of the groove serves as a pump for discharging the flow rate in a direction opposite to the vehicle travel direction through the F portion of the U-shaped protrusion 4.

즉, 본 발명은 종그루브(2)의 바닥면(2a)에서 타이어의 원주방향으로 서로 다른 높이를 가진 U형 돌기(4)들이 유량의 수압을 변화시키고 관내 서로 다른 수압은 유량을 증가시키게 됨으로써, 고압영역의 유량이 저압영역의 유량을 밀어내는 역할을 담당하게 된다.That is, in the present invention, the U-shaped protrusions 4 having different heights in the circumferential direction of the tire in the bottom surface 2a of the longitudinal groove 2 change the water pressure of the flow rate, and the different water pressures in the pipe increase the flow rate. The flow rate of the high pressure region plays a role of pushing the flow rate of the low pressure region.

그리고 본 발명은 종그루브(2)의 바닥면(2a)과 측면(2b)들이 만나는 모서리 부분을 보강시킴에 따라 고하중과 버클링에 따른 응력집중에 대한 그루브 크랙을 방지하도록 되어 있다.In addition, the present invention is to prevent groove cracks due to high load and stress concentration due to buckling by reinforcing the edge portion where the bottom surface 2a and side surfaces 2b of the longitudinal groove 2 meet.

1 : 블록, 2 : 종그루브(Groove),
3 : 횡그루브, 4 : U형 돌기,
4a : 밑면 돌출부, 4b : 측면 돌출부.1: block, 2: groove,
3: lateral groove, 4: U-shaped projection,
4a: bottom protrusion, 4b: side protrusion.

Claims (4)

노면(101)에 접하는 블록(1)과 타이어 원주방향으로 배열된 요입형 종그루브(2) 및 이 종그루브(2)에 대해 횡방향으로 배열되는 횡그루브(3)들을 구비한 트레드(100)를 갖춘 공기입 타이어에 있어서,
상기 종그루브(2)의 바닥면(2a)과 측면(2b)에는 단면이 U형 돌기(4)들이 등간격으로 배치되되, 상기 U형 돌기(4)는 종그루브(2)의 바닥면(2a)에 연결된 밑면 돌출부(4a)와 종그루브(2)의 양쪽 측면(2b)에 연결된 측면 돌출부(4b)들이 연속 연결되고, 이 U형 돌기(4)의 밑면 돌출부(4a)들의 높낮이가 파형 형태의 궤적으로 연속 배치되어 이루어진 것을 특징으로 하는 하이드로 플래닝 성능을 향상시킨 공기입 타이어.A tread 100 having a block 1 in contact with the road surface 101, a recessed longitudinal groove 2 arranged in the circumferential direction of the tire and transverse grooves 3 arranged laterally with respect to the longitudinal groove 2. In pneumatic tire with
The bottom surface 2a and the side surface 2b of the longitudinal groove 2 are U-shaped protrusions 4 are arranged at equal intervals, and the U-shaped protrusion 4 is the bottom surface of the longitudinal groove 2. The bottom protrusion 4a connected to 2a) and the side protrusions 4b connected to both sides 2b of the longitudinal groove 2 are continuously connected, and the heights of the bottom protrusions 4a of the U-shaped protrusion 4 are corrugated. A pneumatic tire having improved hydroplaning performance, characterized by being continuously arranged in a locus of a shape. 제 1항에 있어서,
상기 U형 돌기(4)의 측면 돌출부(4b) 높이(h1)는 종그루브(2)의 전체 깊이(H)의 50% ~ 100% 범위에서 설정한 것을 특징으로 하는 하이드로 플래닝 성능을 향상시킨 공기입 타이어.The method of claim 1,
The height h 1 of the side protrusion 4b of the U-shaped protrusion 4 is set in a range of 50% to 100% of the total depth H of the longitudinal groove 2, thereby improving hydroplaning performance. Pneumatic tires. 제 1항에 있어서,
상기 U형 돌기(4)의 밑면 돌출부(4a)들은 횡방향과 원주방향으로 가변 설정하되, 종그루브(2)의 바닥면(2a)과 측면(2b)을 기준으로 상기 U형 돌기(4)의 거리를 0.1mm ~ 1.0mm 이내로 설정하며, 상기 종그루브(2)의 바닥면(2a)과 모서리 부분인 상기 U형 돌기(4)의 폭은 0.5mm ~ 2.0mm 이내로 설정하여 보강재 기능을 갖춘 것을 특징으로 하는 하이드로 플래닝 성능을 향상시킨 공기입 타이어.The method of claim 1,
The bottom protrusions 4a of the U-shaped protrusions 4 are variably set in the transverse direction and the circumferential direction, and the U-shaped protrusions 4 are based on the bottom surface 2a and the side surface 2b of the longitudinal groove 2. Set the distance of within 0.1mm ~ 1.0mm, the width of the bottom surface (2a) of the longitudinal groove (2) and the U-shaped projection (4) of the corner portion is set within 0.5mm ~ 2.0mm with a reinforcement function The pneumatic tire which improved hydroplaning performance characterized by the above-mentioned. 제 1항에 있어서,
상기 U형 돌기(4)의 밑면 돌출부(4a)들 최소높이와 최대높이 사이의 간격(ℓ)은 그루브 간의 간격인 대중소 피치 중 가장작은 스몰피치(Small pitch) 폭의 50% ~ 100% 범위에서 설정한 것을 특징으로 하는 하이드로 플래닝 성능을 향상시킨 공기입 타이어.
The method of claim 1,
The distance between the minimum and maximum heights of the bottom protrusions 4a of the bottom protrusions 4a of the U-shaped protrusion 4 is in the range of 50% to 100% of the smallest small pitch width of the small and medium pitch, which is the distance between the grooves. Pneumatic tire which improved hydroplaning performance characterized by setting.
KR1020110110607A 2011-10-27 2011-10-27 Pneumatic tire improved hydro-planning performance KR101302548B1 (en)

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Cited By (2)

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KR102092875B1 (en) 2018-10-11 2020-03-24 금호타이어 주식회사 The tire that have longitudinal groove bump for decrease the noise
KR20220154277A (en) 2021-05-12 2022-11-22 넥센타이어 주식회사 A pneumatic tire having vortex forming portion

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FR3018223B1 (en) * 2014-03-10 2017-11-03 Michelin & Cie PNEUMATIC COMPRISING A HIGH CONTRAST TEXTURE IN A GROOVE
JP7027909B2 (en) * 2018-01-23 2022-03-02 住友ゴム工業株式会社 tire
JP7027907B2 (en) * 2018-01-23 2022-03-02 住友ゴム工業株式会社 tire
KR102283846B1 (en) * 2019-11-12 2021-08-03 한국타이어앤테크놀로지 주식회사 Tires with noise-reducing main grooves
KR102364461B1 (en) 2020-09-07 2022-02-18 넥센타이어 주식회사 Tire with reducing noise

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JPH07232514A (en) * 1993-12-27 1995-09-05 Hirohisa Fukada Tire for vehicle
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Publication number Priority date Publication date Assignee Title
KR102092875B1 (en) 2018-10-11 2020-03-24 금호타이어 주식회사 The tire that have longitudinal groove bump for decrease the noise
KR20220154277A (en) 2021-05-12 2022-11-22 넥센타이어 주식회사 A pneumatic tire having vortex forming portion

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