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Tire

A tire and tread technology, applied in tire parts, tire tread/tread pattern, transportation and packaging, etc., can solve the problems of reduced pattern rigidity, inability to discharge water, and poor turning performance on dry roads.

Active Publication Date: 2019-12-20
SUMITOMO RUBBER IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the above-mentioned first main groove and the above-mentioned second lateral groove have a problem that the water between the outer tread portion and the road surface cannot be sufficiently drained during wet driving.
On the other hand, when the same main grooves as the first main groove and the second main groove are arranged on the outer tread portion, there is a problem that the pattern rigidity of the outer tread portion decreases, resulting in poor cornering performance on dry roads.

Method used

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Examples

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Embodiment Construction

[0024] Hereinafter, one embodiment of the present invention will be described based on the drawings.

[0025] figure 1 It is a developed view of the tread portion 2 of the tire 1 of the present embodiment. figure 2 show figure 1 A-A line sectional view of the tread portion 2 of . Such as figure 1 and figure 2 As shown, the tire 1 according to the present embodiment is used, for example, as a pneumatic tire for passenger cars, and is particularly suitable as a high-performance tire presupposed to be used in both public road driving and circuit driving.

[0026] The tire 1 has a tread portion 2 designated in the direction of installation on a vehicle. The direction of attachment to the vehicle is displayed on the sidewall portion (not shown) by characters or symbols, for example. exist figure 1 and figure 2 Among them, when the tire 1 is mounted on a vehicle, the left side corresponds to the vehicle inner side, and the right side corresponds to the vehicle outer side....

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Abstract

The present invention provides a tire capable of achieving both cornering performance and wet road performance on a dry road. This tire has a tread portion with a specified orientation for attachmentto a vehicle. The tread portion (2) has: an inner tread ground contact end (Ti), an outer tread ground contact end (To), an inner main groove (6) extending continuously in the tire circumferential direction between the inner tread ground contact (Ti) and the tire equator (C), an outer narrow groove (7) extending between the outer tread ground contact end (To) and the tire equator (C) in the tire circumferential direction and having a groove width smaller than that of the inner main groove (6), a central main groove (8) continuously extending in the tire circumferential direction between the inner main groove (6) and the outer narrow groove (7), and a lateral crown land portion 11 is divided between the central main groove (8) and the outer narrow groove (7). The lateral crown land portion(11) is provided with a plurality of lateral crown lateral grooves (15) interrupted at both ends in the lateral crown land portion (11).

Description

technical field [0001] The present invention relates to tires, and specifically relates to tires suitable for high-speed travel. Background technique [0002] In Patent Document 1 below, a tire for both public road driving and circuit driving is proposed. The above-mentioned tire has first and second main grooves extending continuously in the tire circumferential direction on the inner tread portion between the tire equator and the inner tread ground contact end in order to ensure wet performance when running on public roads. In addition, in the above-mentioned tire, no groove continuously extending in the tire circumferential direction is provided on the outer tread portion between the tire equator and the outer tread ground contact end. [0003] Patent Document 1: Japanese Patent Laid-Open No. 2017-030604 [0004] However, the above-mentioned first main groove and the above-mentioned second lateral groove have a problem that the water between the outer tread portion and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60C11/03B60C11/12
CPCB60C11/03B60C11/1236B60C2011/0341B60C2011/0353B60C2011/1286Y02T10/86
Inventor 依田崚平小高和真
Owner SUMITOMO RUBBER IND LTD
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