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pneumatic tire

A technology for pneumatic tires and treads, which is applied to tire parts, tire treads/tread patterns, transportation and packaging, etc., which can solve problems such as anti-aquatic performance and braking performance, and achieve excellent anti-aquatic performance Effect

Active Publication Date: 2015-11-18
TOYO TIRE & RUBBER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, even if it is any of the existing tires, the anti-aquatic performance and the braking performance are not considered.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0064] Performance evaluation tests were performed on the test tires of Examples 1-3 and Comparative Examples 1-6.

[0065]The pattern of the sipe 4 formed in each rib 3 is adopted in Figure 4 (a), (b) and Figure 5 (a), (b) The four patterns shown on the ground plane. Each tire used was a tire having three rows of ribs 3 (outer ribs 6 , center ribs 7 , and inner ribs 8 ) formed on the tread 1 . Also, on both sides are tire shoulders 9 , 10 .

[0066] exist Figure 4 In the pattern shown in (a), a plurality of sipes 4 are formed on the outer rib 6 and the inner rib 8 from the main groove side between the shoulders 9 and 10 on both sides, respectively. The sipe 4 includes a first sipe 11 and a second sipe 12 approximately twice as long, which are slightly curved in the same direction and inclined in plan view, and are arranged alternately in the circumferential direction. Furthermore, in the center rib 7, third sipes 13 are respectively formed from the main groove sides o...

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Abstract

The invention provides a pneumatic tyre of ideal anti-aquaplaning performance, braking performance and wear resistance, wherein the tread thereof is provided with a plurality of main slots (2) along the circumferential direction thereof to form a plurality of slot patterns (4) on at least one strip-shaped pattern (3). All the slot patterns (4) are closed when grounded. The corners of the strip-shaped pattern (3) are R-shaped. The lateral slot density (LSD) of the slot patterns (4) on the tread (1) of the pneumatic tyre and the dimension (L) of the R-shaped structure on the strip-shaped pattern (3) satisfy the following equation: 0.01<(LSD + 0.006)*L2 <0.07.

Description

technical field [0001] The invention relates to a pneumatic tire excellent in water skid resistance, braking performance and wear resistance. Background technique [0002] Conventionally, as a tire in consideration of wear resistance, a tire having a structure in which the ground contact length of the portion in contact with the road surface is long in the rib end portion which is the corner portion on the rib surface side is known. The trimming amount of the end portion is larger than that of the rib end portion with a short ground length (for example, refer to Patent Document 1). [0003] In the tire, in order to prevent the occurrence of early wear caused by a sharp increase in circumferential shearing force and sliding caused by a diameter difference between the ground contact portion and the end of the rib, the trimming amount is adjusted, and the ground contact length is eliminated. Difference. [0004] In addition, as a tire in which the ground contact pressure of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60C11/13
CPCB60C11/1281B60C11/0306B60C11/1392B60C2011/1209B60C2011/129
Inventor 高桥敏彦
Owner TOYO TIRE & RUBBER CO LTD