KR100934609B1 - Car tires - Google Patents

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Publication number
KR100934609B1
KR100934609B1 KR1020080045970A KR20080045970A KR100934609B1 KR 100934609 B1 KR100934609 B1 KR 100934609B1 KR 1020080045970 A KR1020080045970 A KR 1020080045970A KR 20080045970 A KR20080045970 A KR 20080045970A KR 100934609 B1 KR100934609 B1 KR 100934609B1
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KR
South Korea
Prior art keywords
groove
protrusion
tire
stone
ejector
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Application number
KR1020080045970A
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Korean (ko)
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KR20090120094A (en
Inventor
전상민
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한국타이어 주식회사
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Priority to KR1020080045970A priority Critical patent/KR100934609B1/en
Priority to CN2008101765058A priority patent/CN101585298B/en
Publication of KR20090120094A publication Critical patent/KR20090120094A/en
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Publication of KR100934609B1 publication Critical patent/KR100934609B1/en

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60CVEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C11/00Tyre tread bands; Tread patterns; Anti-skid inserts
    • B60C11/03Tread patterns
    • B60C11/04Tread patterns in which the raised area of the pattern consists only of continuous circumferential ribs, e.g. zig-zag
    • B60C11/042Tread 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
    • B60C11/047Tread 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 the groove bottom comprising stone trapping protection elements, e.g. ribs
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60CVEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C11/00Tyre tread bands; Tread patterns; Anti-skid inserts
    • B60C11/03Tread patterns
    • B60C11/13Tread patterns characterised by the groove cross-section, e.g. for buttressing or preventing stone-trapping
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60CVEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C11/00Tyre tread bands; Tread patterns; Anti-skid inserts
    • B60C11/03Tread patterns

Abstract

본 발명은 접지면에 형성된 그루브에 돌끼임을 방지하는 스톤 이젝터를 구비하여서 된 타이어에 관한 것으로, 그루브의 바닥 양측에 외향으로 쳐들려 진 돌기로 된 스톤 이젝터를 구비하여서 된 타이어를 제공함으로서, 접지부가 지면에 닿아 압축되면 외향으로 쳐들려진 돌기가 내향으로 쳐지게 되고, 접지부의 압축이 해제되면 내향으로 쳐진 돌기가 외향으로 쳐들려 제자리로 돌아가면서 돌기가 그루브 외측으로 미는 힘을 가하여 그루브에 끼인 돌을 외방으로 방출할 수 있게 하는 것임.The present invention relates to a tire having a stone ejector for preventing crushing in a groove formed on a ground plane, and by providing a tire having a stone ejector made of a protrusion extruded outwardly on both sides of the groove. When it touches the ground and compresses, the outwardly projecting protrusion is struck inwardly, and when the grounding part is decompressed, the outwardly projecting protrusion is squeezed outwards, returning to its place, and the protrusion is pushed out of the groove to release the stone stuck in the groove. To allow outward release.

Description

자동차용 타이어{Vehicle tire improved stone ejector}Automotive tires {Vehicle tire improved stone ejector}

본 발명은 자동차용 타이어에 관한 것으로, 특히, 접지면에 형성된 그루브에 돌끼임을 방지하는 스톤 이젝터를 구비하여서 된 타이어에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tire for an automobile, and more particularly to a tire provided with a stone ejector for preventing crushing of a groove formed on a ground plane.

타이어의 접지면에는 다양한 그루브가 형성되어 있는바, 특히, 공사장 등을 주행하는 중차량용 타이어의 경우 그루브 내로 돌이 들어가 끼이는 일이 있게 된다. 그루브 내에 들어 간 돌은 주행 중 그루브 속으로 파고들어 그루브를 마모시키며, 그루브 아래에 위치한 벨트에 응력을 가하여 벨트와 트레드의 세퍼레이션을 일으킨다.Various grooves are formed on the ground surface of the tire. In particular, in the case of a heavy vehicle tire traveling on a construction site, stones may get stuck into the grooves. The stones in the grooves penetrate into the grooves while driving and wear the grooves, stressing the belt located under the grooves, causing separation of the belt and tread.

그리하여 종래에도 그루브에 스톤 이젝터를 설치하여 그루브에 끼인 돌이 용이하게 배출되게 하는 타이어가 제공된 바 있다.Thus, in the related art, there has been provided a tire in which a stone ejector is installed in a groove so that stones stuck in the groove can be easily discharged.

특허 제10-0592991호(공개번호10-2005-0049220)는 그루브 하단에 돌기 모양의 스톤 이젝터를 형성시키고 돌기 모양의 스톤 이젝터의 상부면을 오목하게 하여 오목부를 형성시키어 오목부 가장자리를 형성하는 펜스의 고무 탄성으로 돌의 방출시키고자 하는 타이어를 제공한다. 그런데, 이와 같은 타이어에 있어서는 오목부 가장자리 펜스의 고무 탄성으로 돌을 방출하려 하지만 실제 펜스의 탄성력이 약하여 그 작용이 충분치 못하며, 아울러 돌과의 접촉으로 두께가 얇은 펜스가 돌기로부터 쉽게 떨어져 나가게 되는 결점이 있다.Patent No. 10-0592991 (Publication No. 10-2005-0049220) forms a projection-shaped stone ejector at the bottom of a groove and concave the upper surface of the projection-shaped stone ejector to form a recess to form a recess edge. The rubber elasticity of the to provide a tire to release the stone. However, in such a tire, the rubber elasticity of the concave edge fence attempts to release the stone, but the actual force of the fence is weak, and its effect is not sufficient, and the thin film fence easily comes off the protrusion by contact with the stone. There is this.

그리고, 특허공개번호 제 2004-0043976호는, 그루브의 일측벽에는 2개의 곡률반경을 가지는 돌출부가 형성되어 있고, 그와 대항하는 타 측벽에는, 상기 그루브의 중심선에 있는 점(點)에 대하여, 상기 일측벽의 돌출부와 대칭으로 돌출부를 형성된 중하중 차량용 타이어를 제공한다. 그러나, 그루브의 주된 목적이 배수라는 것을 고려하면 이 발명에 있어서는 그루브 내 스톤 이젝터가 차지하는 볼륨이 너무 크다. 즉, 이와 같은 스톤 이젝터는 배수 성능을 약화시키는 결점이 있다. 또한 지름이 작은 돌이 양측 벽에 위치한 스톤 이젝터를 파고 들어와 그루브 바닥에까지 이르게 되면 그루브 내에 들어온 돌이 빠져나가기 힘들게 되는 결점이 있다.In Patent Publication No. 2004-0043976, a protrusion having two radiuses of curvature is formed on one side wall of the groove, and on the other side wall facing the groove, with respect to a point on the centerline of the groove, It provides a heavy-duty vehicle tire formed with a protrusion symmetrically with the protrusion of the one side wall. However, considering that the main purpose of the groove is drainage, the volume occupied by the stone ejector in the groove is too large for this invention. In other words, such a stone ejector has a drawback of weakening drainage performance. In addition, when a small diameter stone digs into the stone ejector on both sides of the wall and reaches the bottom of the groove, the stone inside the groove becomes difficult to escape.

이에 본 발명은 그루브의 체적 감소량을 적게하면서도 그루브 내에 끼인 돌을 효과적으로 방출시킬 수 있는 이젝터를 가지는 타이어를 제공하여야 한다는 과제를 해결하고자 한다.Accordingly, the present invention is to solve the problem of providing a tire having an ejector capable of effectively releasing stones stuck in the grooves while reducing the volume reduction of the grooves.

위와 같은 과제를 해결하기 위하여, 본 발명은, 그루브의 바닥 양측에 외측 방향으로 쳐들려 진 돌기로 된 스톤 이젝터를 구비하여서 된 타이어를 제공한다.In order to solve the above problems, the present invention provides a tire provided with a stone ejector of projections squeezed outward on both sides of the bottom of the groove.

그루브의 바닥 양측에 외향으로 쳐들려 진 돌기로 된 스톤 이젝터를 구비하여서 된 본 발명의 타이어는, 접지부가 지면에 닿아 압축되면 외향으로 쳐들려 진 돌기가 내향으로 쳐지게 되고, 접지부의 압축이 해제되면 내향으로 쳐졌던 돌기가 상향으로 쳐들려 제자리로 돌아가면서 돌기가 그루브 외측으로 미는 힘을 가하여 그루브에 끼인 돌을 효과적으로 배출하게 된다.The tire of the present invention, which has a stone ejector of protrusions extruded outwardly on both sides of the bottom of the groove, causes the protrusions extruded outwardly to be inward when the grounding portion touches the ground, and the compression of the grounding portion is released. When the inwardly struck projections are lifted upwards and return to their original positions, the projections push outwards of the grooves to effectively discharge the stones stuck in the grooves.

또한 본 발명은 접지부가 지면에 닿아 압축되면 외향으로 쳐들려 진 돌기가 내향으로 쳐지게 되고, 그리하여 접지시 타이어의 이젝터를 지나 그루브 바닥에 이르는 통로의 크기를 감소시키는 작용을 하여 돌이 그루브 바닥으로 파고드는 현상을 방지하는 효과가 있다.In addition, the present invention, when the grounding portion touches the ground and compressed, the outwardly projecting protrusion is struck inwardly, thereby reducing the size of the passage leading to the groove bottom through the ejector of the tire during grounding, so that the stone is dug into the groove bottom. It is effective in preventing lifting.

트레드와 사이드월 및 비드부로 구성되고, 트레드에 그루브(1)가 형성되고, 그루브(1)에 이젝터가 형성된 타이어에 있어서, 본 발명은, 이젝터가 그루브의 바닥 (2) 양측에 설치된 돌기(3)로 구성되고, 돌기(3)가 접지력으로 팽창되는 접지부에 밀려 쳐질 수 있도록 돌기(2)의 내측면에 쳐짐수용부(31)를 가지는 것을 특징으로 한다.In a tire composed of a tread, a sidewall and a bead part, a groove 1 is formed in the tread, and an ejector is formed in the groove 1, the present invention provides a projection 3 provided with ejectors on both sides of the bottom 2 of the groove. It is characterized in that the projection 3 has a deflection receiving portion 31 on the inner surface of the projection 2 so that the projection 3 can be pushed to the ground portion which is expanded by the folding force.

쳐짐수용부(31)는 편평한 벽면으로 구성되는 것이 바람직하나, 돌기(3) 선단이 쳐질 수 있는 곡면부로 구성시킬 수 있음은 물론이다. 이하 쳐짐수용부(3)를 편평면으로 형성시킨 경우에 있어서의 실시예에 따라 설명한다. The sag receiving portion 31 is preferably composed of a flat wall surface, of course, can be composed of a curved portion that can be struck the tip of the projection (3). Hereinafter, it demonstrates according to the Example at the time of forming the deflection accommodation part 3 in the flat surface.

쳐짐수용부(3)는 주행방향선(L)과 75~100도의 각도(B)를 가지게 하는 것이 바람직하다. 그러나, 쳐짐수용부(31)는 주행방향선(L)과 90~75도의 각도를 가지게 하는 것이 더욱 바람직하다. 쳐짐수용부(31)의 상기 각도를 75도 이하의 예각으로 형성시키게 되는 경우, 돌기(3) 선단의 강도가 약해질 수 있으며, 가류 금형으로부터 타이어를 인출해 내는 일이 곤란하게 된다.The deflection receiving portion 3 preferably has an angle B of the travel direction line L and 75 to 100 degrees. However, it is more preferable that the deflection accommodating part 31 has an angle of 90 to 75 degrees with the travel direction line L. When the angle of the deflection accommodating portion 31 is formed at an acute angle of 75 degrees or less, the strength of the tip 3 of the projection 3 may be weakened, and it is difficult to pull out the tire from the vulcanization mold.

그러나, 쳐짐수용부(31)의 상기 각도는 90도 이상 100도의 둔각으로 형성시킬 수도 있다. 이와 같은 경우 돌기(3)의 쳐짐 량이 감소되어 돌기(3)의 복원 거리가 감소될 수 있으나, 반대로 복원력이 커져서 돌을 빼어내는 힘이 강해질 수 있다.However, the angle of the deflection accommodating part 31 may be formed at an obtuse angle of 90 degrees or more and 100 degrees. In this case, the amount of deflection of the protrusions 3 may be reduced, so that the restoration distance of the protrusions 3 may be reduced, but on the contrary, the force for extracting the stones may be stronger by increasing the restoring force.

도1은 본 발명의 일부 발췌 단면도1 is a partial cross-sectional view of the present invention

도2는 지면에 접하여 접지력으로 타이어가 접지압을 받아 접지부가 팽창되어 돌기가 쳐지는 상태 및 돌기가 쳐졌다가 접지압이 해제되어 접지부가 원상 회복되면서 돌기가 원상태로 쳐들려지는 상태 설명도.2 is a diagram illustrating a state in which the tire is subjected to the ground pressure by the grounding force in contact with the ground, and the ground portion is inflated and the protrusion is struck and the protrusion is released and the ground pressure is released to restore the ground portion to its original state.

<도면의 주요 부분에 대한 부호의 설명><Explanation of symbols for the main parts of the drawings>

1. 그루브1. Groove

2. 바닥2. Bottom

3. 돌기3. Turning

31. 쳐짐수용부31. Deflection

Claims (4)

삭제delete 삭제delete 트레드와 사이드월 및 비드부로 구성되고, 트레드에 그루브(1)가 형성되고, 그루브(1)에 이젝터가 형성된 것에 있어서, 이젝터가 그루브의 바닥(2)양측에 설치된 돌기(3)로 구성되고, 돌기(3)가 접지력으로 팽창되는 접지부에 밀려 쳐질 수 있도록 돌기(2)의 내측면에 쳐짐수용부(31)를 가지며, 쳐짐수용부(31)는 주행방향선(L)과 90~75도의 각도를 가지는 것을 특징으로 하는 자동차용 타이어.Consists of a tread, a sidewall and a bead part, the groove 1 is formed in the tread, the ejector is formed in the groove 1, the ejector is composed of projections (3) provided on both sides of the bottom (2) of the groove, The projection 3 has a deflection accommodating portion 31 on the inner side of the protrusion 2 so that the protrusion 3 can be pushed to the ground portion which is expanded by the folding force, and the deflection accommodating portion 31 has a traveling direction line L and 90 to 75. An automobile tire having an angle of degrees. 삭제delete
KR1020080045970A 2008-05-19 2008-05-19 Car tires KR100934609B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020080045970A KR100934609B1 (en) 2008-05-19 2008-05-19 Car tires
CN2008101765058A CN101585298B (en) 2008-05-19 2008-11-07 Tyre for cars

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Application Number Priority Date Filing Date Title
KR1020080045970A KR100934609B1 (en) 2008-05-19 2008-05-19 Car tires

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KR20090120094A KR20090120094A (en) 2009-11-24
KR100934609B1 true KR100934609B1 (en) 2009-12-31

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101291986B1 (en) * 2011-12-28 2013-08-09 한국타이어 주식회사 Pneumatic vehicle tire
JP5580369B2 (en) 2012-07-04 2014-08-27 株式会社ブリヂストン tire
JP5848731B2 (en) * 2013-08-21 2016-01-27 住友ゴム工業株式会社 Pneumatic tire
CN105960341A (en) 2014-02-04 2016-09-21 普利司通美国轮胎运营有限责任公司 Radial stone ejectors
JP7251166B2 (en) * 2019-01-25 2023-04-04 住友ゴム工業株式会社 tire
KR102253921B1 (en) * 2019-04-15 2021-05-20 한국타이어앤테크놀로지 주식회사 Pnematic tire

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2461796Y (en) * 2000-10-26 2001-11-28 宋宪礼 Anti-skid tyre
KR100613809B1 (en) * 2004-06-23 2006-08-21 한국타이어 주식회사 Pneumatic tire
FR2890600B1 (en) * 2005-09-15 2010-02-26 Michelin Soc Tech IRREGULAR ANTI-WEAR DEVICE FOR PNEUMATIC BEARING BAND

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CN101585298A (en) 2009-11-25
KR20090120094A (en) 2009-11-24

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