KR20070057515A

KR20070057515A - Vehicle tire

Info

Publication number: KR20070057515A
Application number: KR1020050117048A
Authority: KR
Inventors: 이상진
Original assignee: 한국타이어 주식회사
Priority date: 2005-12-02
Filing date: 2005-12-02
Publication date: 2007-06-07

Abstract

A vehicle tire is provided to equally form a block rigidity of a shoulder portion and secure drive stability by the installation of a semi-groove and the installation of a kerf. A vehicle tire includes a thread, a side wall, and a bead portion. Longitudinal grooves(11,12,13,14) and transverse grooves(22) are formed in the thread to form a rib(31) or a block(32). A transverse groove(5) is formed between shoulder blocks(63,64) to improve a drainage performance. A transverse angle of the transverse groove is not changed within a contact range of a tire with a road surface, but is changed at a side portion(51) of a shoulder portion, which is disposed at a position beyond the contact range of a tire with a road surface, thereby equally forming a block rigidity of the shoulder portion.

Description

Automotive Tires {Vehicle Tire}

도 1 은 본 발명의 요부 발췌 평면도1 is a plan view of the main portion of the present invention

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

11, 12, 13, 14 ............종그루브 11, 12, 13, 14 ............ groove

2, 22 ............ 횡그루브2, 22 ............ groove

31 ............... 리브31 ............... Rib

32 ............... 블록32 ............... Block

5 ................ 횡그루브5 ...

51 .............. 숄더부 측부 51 .............. Shoulder side

6 ................ 정중앙 세미그루브6 ................ Centered semigroove

601 ............ 세미그루브 601 ............ Semigroove

61, 62 ............중앙 좌우 블록 61, 62 ... center left and right blocks

63, 64 ............ 숄더 블록 63, 64 ............ the shoulder block

7 ................. 커프7 ................. cuff

본 발명은, 고성능차량용 타이어에 관한 것이다.The present invention relates to a tire for a high performance vehicle.

고성능타이어는 낮은 편평비를 가지는 고속 주행용 타이어를 통칭하는 바, 이러한 타이어는 트랙션기능과 조종안정성 및 제동성능을 높이기 위해 일반 승용차용 타이어에 비하여 블록 형상을 크게 형성시키어 트레드부 강성을 높이는 것이 일반이다. 그러나 이와 같이, 트레드 블록을 넓고 크게 형성시키면 각 블록간에 강성차가 불균일하게 되어 이상 마모 현상이 발생되며 그리하여 소음 성능을 악화시키는 결점이 있었다. 특히, 종래의 타이어는 배수기능을 향상시키기 위하여 타이어가 노면에 접촉하는 영역 내의 숄더에서 횡그루브를 폭이 넓은“ㄱ"자 형으로 급격한 커브를 형성시켜 왔던 바, 본 발명자는 타이어가 노면에 접촉하는 범위 내에서의 숄더부 횡그루브에의 이러한 급격한 각도 변화가 넓고 큰 블록들 간의 강성을 불균일하게 하는 요소로 작용하며, 그리하여 소음 성능을 악화시키는 것을 발견하였다.High-performance tires are commonly referred to as high-speed tires with low flattening ratios. These tires generally increase the stiffness of the tread by forming a block shape larger than that of general passenger car tires in order to improve traction, steering stability and braking performance. . However, if the tread block is formed wide and large in this way, the stiffness difference between the blocks becomes uneven and abnormal abrasion occurs, thereby degrading the noise performance. In particular, the conventional tire has been formed a sharp curve in the width of the horizontal groove in the "b" shape in the shoulder in the region in which the tire is in contact with the road surface in order to improve the drainage function, the inventors of the tire contact the road surface It has been found that this sudden change of angle in the shoulder lateral groove within the range of acts as an element that makes the stiffness between the wide and large blocks uneven, thereby deteriorating the noise performance.

이에 본 발명은, 타이어가 노면에 접촉하는 범위 내에서의 숄더부 횡그루브 가 급격한 각도 변화를 일으키지 아니하고, 타이어가 노면에 접촉하는 범위를 벗어난 숄더부위에서 비로서 횡그루브의 각도를 변화시킴으로서, 숄더부에서의 블록 강성을 동일하게 형성시킬 수 있게 하면서도 배수 성능의 저하를 방지할 수 있게 하 며, 나아가, 그루브와 블록의 크기를 개량함으로서, 조종안정성과 제동성능을 확보하면서도 소음 성능을 개선할 수 있게 하였는바, 이와 같은 본 발명을 첨부된 도면에 의하여 설명하면 다음과 같다.Accordingly, the present invention is a shoulder by changing the angle of the lateral groove as a ratio at the shoulder portion outside the range in which the tire is in contact with the road surface, without causing the sudden change in the angle of the shoulder portion in the range that the tire contacts the road surface, It is possible to form the same block stiffness at the part while preventing the deterioration of drainage performance. Furthermore, by improving the size of the groove and the block, it is possible to improve the noise performance while securing the steering stability and braking performance. The present invention as described above will be described with reference to the accompanying drawings.

트레드와 사이드월 및 비드부로 구성되고, 트레드에 종그루브(11, 12, 13, 14)와 횡그루브(22)를 형성시키어 리브(31)나 블록(32)을 형성시키고, 숄더부 블록(63, 64)에 배수 성능 향상을 위한 횡그루브(5)를 형성시켜서 된 것에 있어서, 본 발명은, 숄더부 블록(63, 64) 사이에 배수 성능 향상을 위해 형성시킨 횡그루브(5)가 타이어가 노면에 접촉하는 범위(TW) 내에서는 횡방향의 각도를 변화시키지 아니하고, 타이어가 노면에 접촉하는 범위(TW)를 벗어난 숄더부 측부(51)에서 비로서 횡그루브의 각도를 변화시킴으로서, 숄더부에서의 블록 강성을 동일하게 형성시킬 수 있게 하는 것을 제1의 특징으로 한다.Comprising a tread, sidewalls and bead portions, longitudinal grooves (11, 12, 13, 14) and transverse grooves 22 are formed on the tread to form ribs 31 or blocks 32, and the shoulder block block 63 , 64 is formed in the horizontal groove 5 for improving the drainage performance, the present invention, the horizontal groove (5) formed between the shoulder block (63, 64) for improving the drainage performance By changing the angle of the lateral groove as a ratio at the shoulder portion side 51 outside the range TW where the tire is in contact with the road surface without changing the angle in the lateral direction within the range TW in contact with the road surface. It is a first feature that it is possible to form the block stiffness in Equally.

횡그루브(5)는 이를 직선에 가깝도록, 그 곡률값(R)을 90mm 이상이 되도록 하는 것이 바람직하다. 그리고, 숄더부 블록(63, 64)의 강성 균일화를 위해 블록(63, 64)의 각도(가)를 15∼25도로 구성시켰다. The horizontal grooves 5 preferably have their curvature values R to be 90 mm or more so that they are close to straight lines. The angles (a) of the blocks 63 and 64 were configured to be 15 to 25 degrees in order to uniformize the rigidity of the shoulder block blocks 63 and 64.

본 발명은 이에서 나아가, 메인 그루브를 네 개의 종그루브(11, 12, 13, 14)로 형성시키어 정중앙 세미그루브(6)와 중앙 좌우 블록(61, 62) 및 양측 숄더부 블록(63, 64)은 분획시키고, 소음성능을 향상시키기 위하여, 숄더부 블록(63, 64)을 L/L1, M/M1, S/S1의 각각 2종류의 3가지 피치로 구성시킨다. S피치는 20∼35mm의 폭으로 형성시키며, M, L 피치의 크기는 M/S=1.2∼2.3, L/S-1.4∼1.55의 비율로 형성시킨다. 그리고, L1,M1,S1 피치 또한 동일한 비율과 크기로 형성시킨다.According to the present invention, the main groove is formed of four longitudinal grooves 11, 12, 13, and 14, so that the central semi groove 6, the center left and right blocks 61, 62, and both shoulder blocks 63, 64 are formed. ), The shoulder block blocks 63 and 64 are composed of three pitches of two types, L / L1, M / M1, and S / S1, respectively. S pitches are formed in a width of 20 to 35 mm, and M and L pitches are formed at ratios of M / S = 1.2 to 2.3 and L / S-1.4 to 1.55. The pitches L1, M1, and S1 are also formed in the same ratio and size.

정중앙 세미그루브(6)의 폭(Wa)은 트레드폭(TW)의 9∼10%, 그리고 중앙 좌우 블록(61, 62)의 폭(Wb)은 트레드폭(TW)의 15∼16%로 형성시켜트레드부 강성을 유지시켜 줄 수 있도록 하며, 숄더부 블록(63, 64)은 트레드폭(TW)의 19∼20%로 형성시키어 격심한 핸들링 및 코너링시 충분한 그립력을 가지도록 한다.The width Wa of the center semi-groove 6 is 9 to 10% of the tread width TW, and the width Wb of the center left and right blocks 61 and 62 is 15 to 16% of the tread width TW. In order to maintain the tread stiffness, the shoulder block blocks 63 and 64 are formed at 19 to 20% of the tread width TW so as to have sufficient grip for severe handling and cornering.

그리고, 네 개의 종그루브(11, 12, 13, 14) 중, 중앙의 두개 종그루브(12, 13)는 각각 그 폭(Ga)을 트레드폭(TW)의 5∼5.5% 비율로, 숄더부측 종그루브(11, 14)의 폭(Gb)을 트레드폭(TW)의 4.5∼5%로 형성시키어 젖은 노면에서의 성능을 향상시키도록 한다. Among the four longitudinal grooves 11, 12, 13, and 14, the central longitudinal grooves 12 and 13 have their width Ga at a ratio of 5 to 5.5% of the tread width TW, respectively, on the shoulder portion side. The width Gb of the longitudinal grooves 11 and 14 is formed at 4.5 to 5% of the tread width TW to improve the performance on the wet road surface.

또한, 중앙부가 과도한 강성을 가지지 아니하도록 정중앙 세미그루브(6)는 그 중앙부에 세미그루브(601)를 형성시키며, 중앙 좌우 블록(61, 62)은 횡그루브로 블록을 형성시키고 세미종그루브(611)로 세미리브(631)를 형성시켜며 세미리브(631)에 커프(7)를 형성시키되 그 설치 각도를 45∼55도로 형성시킨다. 이와 같은 폭과 각도를 유지하지 못할 경우 중앙부의 조기 마모를 유발할 수 있으며, 소음 성능 또한 악화될 염려가 있다. In addition, the center semi-groove 6 forms a semi-groove 601 at the center thereof so that the center part does not have excessive stiffness, and the central left and right blocks 61 and 62 form a block by the horizontal groove and the semi-long groove 611. The semi-ribbed 631 is formed in the chopper 7 and the cuff 7 is formed in the semi-ribbed 631, and the installation angle thereof is formed at 45 to 55 degrees. Failure to maintain this width and angle can cause premature wear at the center, and noise performance is likely to deteriorate.

이와 같이 구성된 본 발명은, 횡그루브(5)가 타이어가 노면에 접촉하는 범위(TW) 내에서는 횡방향의 각도를 변화시키지 아니하고, 타이어가 노면에 접촉하는 범위(TW)를 벗어난 숄더부 측부(51)에서 비로서 횡그루브의 각도를 변화시킴으로서, 숄더부에서의 블록 강성을 동일하게 형성시킬 수 있게 하는 효과가 있으며, 중앙부의 세미그루브(601) 설치 및 커프(7)의 설치로 그 강성을 조절하여 조종안정성과 제동성을 확보하면서도 소음 성능을 개선할 수 있게 한 효과가 있다.According to the present invention constituted as described above, the shoulder groove side portion having the lateral groove 5 outside the range TW where the tire contacts the road surface without changing the angle in the lateral direction within the range TW where the tire contacts the road surface. By changing the angle of the lateral groove as a ratio in 51), there is an effect that the block stiffness at the shoulder portion can be formed equally, and the rigidity is provided by the installation of the semi groove 601 and the cuff 7 at the center. By adjusting it, it is possible to improve the noise performance while securing the steering stability and braking performance.

Claims

Comprising a tread, sidewalls and bead portions, longitudinal grooves (11, 12, 13, 14) and transverse grooves (21, 22) are formed on the tread to form ribs (31) or blocks (32), and shoulder block 63 and 64 are formed by forming the horizontal grooves 5 for improving the drainage performance. The horizontal grooves 5 formed between the shoulder block blocks 63 and 64 for the drainage performance improvement have a tire surface. By changing the angle of the lateral groove as a ratio at the shoulder portion side 51 outside the range TW where the tire is in contact with the road surface without changing the angle in the transverse direction within the range TW in contact with the An automobile tire characterized by being able to form the block rigidity of the same.

The automobile tire according to claim 1, wherein the lateral groove (5) has a curvature value (R) of 90 mm or more so as to be close to a straight line.

The vehicle tire according to claim 1, wherein an angle (a) of the blocks (63, 64) is formed to be 15 to 25 degrees in order to uniformize the rigidity of the shoulder block (63, 64).

4. The groove according to any one of claims 1 to 3, wherein the main groove is formed of four longitudinal grooves (11, 12, 13, 14), and the center semi-groove (6) and the center left and right blocks (61, 62) and A vehicle characterized in that the shoulder blocks (63, 64) are partitioned and the shoulder blocks (63, 64) are composed of three pitches of two types of L / L1, M / M1, and S / S1, respectively. Dragon tires.

The pitch of claim 4 is formed in a width of 20 to 35mm, the size of M, L pitch is formed in the ratio of M / S = 1.2 to 2.3, L / S-1.4 to 1.55, L1, M1, S1 pitch car tires, characterized in that formed by the same ratio and size.

The width Wa of the center semi-groove 6 is 9 to 10% of the tread width TW, and the width of the center left and right blocks 61 and 62. Wb) is formed to 15 to 16% of the tread width (TW) to maintain the tread stiffness, and shoulder block blocks (63, 64) is formed to 19 to 20% of the tread width (TW) An automobile tire characterized by having a sufficient grip force during handling and cornering.

The center of the four longitudinal grooves (11, 12, 13, 14) of the four longitudinal grooves (11, 12, 13, 14), respectively, the width (Ga) of the tread width At a ratio of 5 to 5.5 dml of TW, the width Gb of the shoulder side side grooves 11 and 14 is formed to be 4.5 to 5% of the tread width TW to improve performance on wet road surfaces. Automotive tires, characterized in that.

4. The central semi-groove 6 forms a semi-groove 601 at its central portion so that the central portion does not have excessive stiffness, and the central left and right blocks 61, 62. Is formed by forming a block with a horizontal groove, semi-ribbed 631 with a semi-long groove 611, and a cuff 7 formed on the semi-ribbed 631, the installation angle is formed by 45 to 55 degrees Car tires.