KR100792979B1 - Pneumatic tire for heavy vehicle - Google Patents

Pneumatic tire for heavy vehicle Download PDF

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Publication number
KR100792979B1
KR100792979B1 KR1020060114820A KR20060114820A KR100792979B1 KR 100792979 B1 KR100792979 B1 KR 100792979B1 KR 1020060114820 A KR1020060114820 A KR 1020060114820A KR 20060114820 A KR20060114820 A KR 20060114820A KR 100792979 B1 KR100792979 B1 KR 100792979B1
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KR
South Korea
Prior art keywords
shoulder
semi
rib
groove
tread
Prior art date
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KR1020060114820A
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Korean (ko)
Inventor
김용근
최재억
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한국타이어 주식회사
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Priority to KR1020060114820A priority Critical patent/KR100792979B1/en
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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
    • B60C11/01—Shape of the shoulders between tread and sidewall, e.g. rounded, stepped or cantilevered
    • 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
    • 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
    • B60C11/01—Shape of the shoulders between tread and sidewall, e.g. rounded, stepped or cantilevered
    • B60C2011/013—Shape of the shoulders between tread and sidewall, e.g. rounded, stepped or cantilevered provided with a recessed portion
    • 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
    • B60C2200/00—Tyres specially adapted for particular applications
    • B60C2200/06—Tyres specially adapted for particular applications for heavy duty vehicles

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

Abstract

A pneumatic tire for a heavy vehicle is provided to raise heat dissipation efficiency of the tire by forming semi-grooves in the outermost rib to increase the sectional area of the outermost rib. A pneumatic tire for a heavy vehicle comprises a tread(1), a sidewall(2) and a bead section. The tread(1) has a shoulder section provided with a shoulder rib(4) distinguished by a groove(3). The shoulder rib(4) has a stepped portion lower than a tread a grounding line. The shoulder rib(4) is provided with a plurality of shoulder semi-ribs(41,42,43) that are prepared in the form of multi-step structure having a sequentially reduced height. A shoulder semi-groove(401) is formed between the shoulder semi-ribs(41,42). A shoulder semi-groove(402) is formed between the shoulder semi-ribs(42,43). A shoulder semi-groove(403) is formed between the shoulder semi-rib(43) and the outermost rib.

Description

중하중 차량용 공기입 타이어 {Pneumatic tire for heavy vehicle}Pneumatic tire for heavy vehicle

도 1 은 종래의 타이어에 관한 것으로1 relates to a conventional tire

(가)는 숄더부 블록을 이웃 블록보다 낮게 단차를 둔 타이어의 일 예시도  (A) is an example of a tire having the shoulder block stepped lower than the neighboring block

(나)는 위 (가)로 도시된 타이어의 접지 상태도  (B) shows the grounding state of the tire shown in (a) above.

도 2 는 본 발명의 일 실시예의 요부 발췌 단면도Figure 2 is a cross-sectional view of the main portion of an embodiment of the present invention

도 3 은 본 발명의 다른 실시예의 요부 발췌 단면도3 is a cross-sectional view showing main parts of another embodiment of the present invention.

<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>

1. 트레드1. Tread

2. 사이드월2. Sidewall

3. 그루브 3. Groove

4. 숄더리브 4. Shoulder rib

41, 42, 43. 숄더세미리브41, 42, 43.Shoulder Semi Rib

401, 402, 403. 숄더세미그루브401, 402, 403. Shoulder Semi Groove

본 발명은 중하중 차량용 타이어에 관한 것으로, 특히 트레드의 최 외곽 리브의 높이를 이웃하는 리브의 높이보다 낮추어 형성시키는 타이어에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heavy duty vehicle tire, and more particularly, to a tire formed by lowering the height of the outermost rib of a tread than the height of an adjacent rib.

래디알 공기입 타이어는 그 구조상 트레드의 숄더부는 고무두께가 가장 두꺼워 주행중 타이어 발열이 가장 심하게 나타난다. 이 발열 때문에 고무의 온도는 쉽사리 섭씨 100도씨 이상 올라가게 되고 이렇게 되면 고무의 경화가 진행되고 하부에 있는 벨트 층간에 세파레이션(SEPARATION) 현상이 발생 하게 되는 염려가 있다.Radial pneumatic tires have the thickest rubber thickness in the shoulder part of the tread, resulting in the greatest heat generation of tires while driving. Because of this heat generation, the rubber temperature easily rises above 100 degrees Celsius, which causes the rubber to harden and separation occurs between the belt layers at the bottom.

그리하여 종래에는, 첨부된 도면 도1의 (가)에 도시된 바와 같이 숄더부인 최외곽 트레드 블록의 높이를 이웃한 트레드 블록보다 낮추어 형성시킴으로서 고무층의 두께를 감소시키어 방열성능을 향상시켜 왔다. 그러나 이와 같은 타이어에 있어서는 숄더부의 단순한 단차로 인해서 첨부된 도면 도 1 의 (나)에 도시된 바와 같이 접지형상에 불연속선(ㄱ)이 존재하게 되며, 이것은 최 외측 그루브 저부의 크랙(Crack)이나, 숄더부 리브(Rib)의 이상 편마모 현상을 유발하는 결점이 있다.Thus, in the related art, as shown in FIG. 1A of the accompanying drawings, the height of the outermost tread block, which is the shoulder portion, is formed to be lower than that of the neighboring tread block, thereby reducing the thickness of the rubber layer to improve heat dissipation performance. However, in such a tire, due to the simple step of the shoulder portion, there is a discontinuity line (a) in the ground shape as shown in (b) of FIG. 1, which is attached, which is a crack of the bottom of the outermost groove, There is a defect that causes abnormal partial wear of the shoulder rib (Rib).

이에 본 발명은 최 외곽 리브의 높이에 단차를 둠에 있어서, 종래에 있어서와 같이 하나의 단차를 두지 아니하고 단차를 순차적인 높이차를 가지는 다단으로 형성시킴으로서 최 외곽 리브의 접지 상태를 개선하며 고속 주행시 숄더부 외측의 리브가 지면에 닿지 아니하게 하여 운동량을 감소시키고, 나아가 최 외곽 리브에 세미그루브를 형성시켜 단면적을 확대함으로서 방열 성능을 향상시켜 발열에 의한 벨트 층간의 세파레이션을 크게 감소시키고자 하는 것인 바, 이와 같은 본 발명을 첨부된 도면에 의하여 설명하면 다음과 같다.Accordingly, the present invention improves the grounding state of the outermost ribs by forming a step in multiple stages having a sequential height difference without placing one step as in the prior art in placing a step at the height of the outermost rib. To reduce the amount of momentum by preventing the ribs on the outside of the shoulder from contacting the ground, and to increase the cross-sectional area by forming semi grooves on the outermost ribs to improve heat dissipation performance and to greatly reduce the separation between the belt layers due to heat generation. When described with reference to the accompanying drawings, the present invention as follows.

트레드(1)와 사이드월(2) 및 비드부(도면에 도시하지 않음)로 구성되고 트레드부(1)의 숄더측에 그루브(3)에 의해 구분되는 숄더리브(4)를 형성시키며, 숄더리브(4)가 트레드 접지선(가)에 비해 낮은 단차를 가지도록 하여서 된 것에 있어서, 본 발명은 숄더리브(4)가, 종래에 있어서와 같이, 트레드 접지선(가)에 비해 하나의 단차를 가지지 아니하고, 첨부된 도면 도 2 에 도시된 바와 같이, 순차적인 높이차를 가지는 다단의 숄더세미리브(41, 42, 43)로 형성된 것을 특징으로 한다.Forming a shoulder rib 4 composed of a tread 1 and a sidewall 2 and a bead part (not shown in the drawings) and separated by a groove 3 on the shoulder side of the tread part 1, and a shoulder The rib 4 is designed to have a low step compared to the tread ground wire A. In the present invention, the shoulder rib 4 has one step compared to the tread ground wire A as in the prior art. Instead, as shown in the accompanying drawings, Figure 2, characterized in that formed by a multi-stage shoulder semi-ribbed (41, 42, 43) having a sequential height difference.

삭제delete

그리고, 각 숄더세미리브(41, 42, 43) 사이의 단차는, 제1 숄더세미그루브(41)의 단차(D1)가 트레드 접지선(가)로부터 그루브(3) 바닥까지의 깊이(H)의 0.1~0.8배이고, 이하 차하단 숄더세미그루브의 단차(예 D2) 또한 차상단 세미그루브의 단차(D1)의 0.1~0.8배 인 것이 바람직하다.In addition, the step between each of the shoulder semi-ribs 41, 42, 43 is that the step D1 of the first shoulder semi-groove 41 has a depth H from the tread ground line A to the bottom of the groove 3. It is preferable that it is 0.1 to 0.8 times, and the level difference (Example D2) of a lower shoulder semi-groove below is 0.1 to 0.8 times the level difference D1 of a next upper semi groove.

본 발명은 이에서 나아가, 다단의 숄더세미리브(41, 42, 43) 사이에 숄더세 미그루브(401, 402, 403)를 형성시키는 것을 제2의 특징으로 한다. 그리고, 숄더세미그루브(401, 402)의 깊이는 인접하는 양 세미그루리브 간의 단차의 1~2배로 형성시키는 것이 바람직하다.The present invention is further characterized by the formation of the shoulder-shaped microgrooves 401, 402, and 403 between the multi-stage shoulder semi-ribs 41, 42, and 43. The depth of the shoulder semi grooves 401 and 402 is preferably formed to be 1 to 2 times the step between the adjacent semi grooves.

이와 같은 본 발명은, 순차적으로 고무 두께가 감소되어 트레드 접지폭상 불연속선이 생기는 것을 방지하여 숄더부 리브의 이상마모를 방지하고, 접지하중에 따라 순차적으로 접지함으로써 조종안정성을 대폭 향상 시키는 효과 있으며, 숄더부 리브의 고무 두께를 낮춤으로서 방열성능을 높인데다가, 연속적인 단차를 둠과 동시에 다수개의 세미그루브를 채용함으로서 단면적을 크게 하여 방열성능을 극대화 한 효과가 있다.The present invention, such as the rubber thickness is sequentially reduced to prevent the occurrence of tread ground width discontinuity line to prevent abnormal wear of the shoulder ribs, and by sequentially grounding in accordance with the grounding load, the effect of significantly improving the steering stability, shoulder Increasing the heat dissipation performance by reducing the rubber thickness of the secondary ribs, and by increasing the cross-sectional area by adopting a plurality of semi-grooves at the same time with a continuous step, there is an effect to maximize the heat dissipation performance.

Claims (5)

삭제delete 삭제delete 삭제delete 트레드(1)와 사이드월(2) 및 비드부로 구성되고 트레드부(1)의 숄더측에 그루브(3)에 의해 구분되는 숄더리브(4)를 형성시키며, 숄더리브(4)가 트레드 접지선(가)에 비해 낮은 단차를 가지도록 하고, 숄더리브(4)가, 순차적인 높이차를 가지는 다단의 숄더세미리브(41, 42, 43)로 형성된 것에 있어서, 다단의 숄더세미리브(41, 42, 43) 사이에 숄더세미그루브(401, 402, 403)가 형성된 것을 특징으로 하는 중하중 차량용 공기입 타이어.A shoulder rib 4 composed of a tread 1, a sidewall 2, and a bead part and separated by a groove 3 on the shoulder side of the tread part 1 is formed, and the shoulder rib 4 is a tread ground wire ( When the shoulder ribs 4 are formed of the multi-stage shoulder semi-ribs 41, 42, and 43 having a sequential height difference, the shoulder ribs 41, 42 of the multi-stage have , 43) a shoulder semi-groove (401, 402, 403) formed between the pneumatic tire for a heavy-duty vehicle. 제4항에 있어서, 숄더세미그루브(401, 402)는 그 깊이가 인접하는 양 세미그루리브 간의 단차의 1~2배인 것을 특징으로 하는 중하중 차량용 공기입 타이어.5. The pneumatic tire according to claim 4, wherein the shoulder semi grooves (401, 402) have a depth of one to two times the step between adjacent two semi grooves.
KR1020060114820A 2006-11-20 2006-11-20 Pneumatic tire for heavy vehicle KR100792979B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110312622A (en) * 2017-02-24 2019-10-08 大陆轮胎德国有限公司 Pneumatic vehicle tire

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR920002998Y1 (en) * 1990-05-07 1992-05-18 주식회사 금 호 Pneumatic type of single layer tread
JPH0516615A (en) * 1991-07-08 1993-01-26 Ohtsu Tire & Rubber Co Ltd :The Pneumatic radial tire for heavy load
JPH08183308A (en) * 1994-12-28 1996-07-16 Yokohama Rubber Co Ltd:The Pneumatic tire for heavy load
JP2006168379A (en) 2004-12-10 2006-06-29 Bridgestone Corp Pneumatic tire

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR920002998Y1 (en) * 1990-05-07 1992-05-18 주식회사 금 호 Pneumatic type of single layer tread
JPH0516615A (en) * 1991-07-08 1993-01-26 Ohtsu Tire & Rubber Co Ltd :The Pneumatic radial tire for heavy load
JPH08183308A (en) * 1994-12-28 1996-07-16 Yokohama Rubber Co Ltd:The Pneumatic tire for heavy load
JP2006168379A (en) 2004-12-10 2006-06-29 Bridgestone Corp Pneumatic tire

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110312622A (en) * 2017-02-24 2019-10-08 大陆轮胎德国有限公司 Pneumatic vehicle tire
CN110312622B (en) * 2017-02-24 2022-03-25 大陆轮胎德国有限公司 Pneumatic tire for vehicle

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