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Pneumatic tire

A technology of pneumatic tires and tires, applied in tire parts, tire treads/tread patterns, transportation and packaging, etc., can solve the problem of pneumatic tires not being able to give full play to the driving performance, and achieve good balance.

Active Publication Date: 2019-06-21
TOYO TIRE & RUBBER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, sometimes the pneumatic tires of new products cannot fully exert the driving performance

Method used

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  • Pneumatic tire
  • Pneumatic tire
  • Pneumatic tire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] Such as figure 1 As shown by way of example, bead portions 2 are provided on both sides in the tire width direction of the pneumatic tire 1 . The bead portion 2 includes: a bead core 2a formed of a steel wire wound in a circular shape; and a rubber bead apex 2b provided radially outside the bead core 2a. A carcass ply 5 is bridged over the bead portions 2 on both sides in the tire width direction. The carcass ply 5 is a sheet-like member in which a plurality of cords arranged in a direction perpendicular to the tire circumferential direction are covered with rubber. The carcass ply 5 forms the skeleton shape of the pneumatic tire 1 between the bead portions 2 on both sides in the tire width direction, and is folded around the bead portion 2 from inside to outside in the tire width direction to wrap the bead portion 2 . A sheet-shaped inner liner 6 made of rubber with low air permeability is pasted inside the carcass ply 5 .

[0021] One or more layers of the belt 7 a...

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Abstract

The invention relates to a pneumatic tire, and particularly provides a pneumatic tire having good direction balance in the edge effect of shallow grooves. The pneumatic tire includes a center land portion (30), a mediate land portion (35), a shoulder land portion (40), and shallow grooves (33, 38, and 43) on a surface of each of the land portions (30, 35, and 40). The pneumatic tire is characterized in that the shallow grooves (33 and 43) in the center land portion (30) and the shoulder land portion (40) have many components in a circumferential direction of the tire, and the shallow grooves (38) in the mediate land portion (35) have more components in a tire width direction than the shallow grooves (33 and 43) in the center land portion (30) and the shoulder land portion (40).

Description

[0001] This application is based on Japanese patent application 2017-238872 (application date: December 13, 2017) and claims the priority of Japanese patent application 2017-238872. This application contains the entire content of Japanese patent application 2017-238872. technical field [0002] The present invention relates to a pneumatic tire. Background technique [0003] The surface of the new pneumatic tire is mirror-like, and the release agent applied to the mold for molding penetrates the surface of the new pneumatic tire. Therefore, the pneumatic tires of new products may not be able to fully exhibit the running performance. Therefore, an attempt has been made to provide shallow grooves on the tread surface of pneumatic tires, and to ensure the driving performance of new products through the edge effect of the shallow grooves. [0004] Patent Document 1 discloses a technique in which similar shallow grooves are provided on the entire tread surface. Patent Document ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60C11/12
CPCB60C11/0302B60C11/0306B60C11/0309B60C11/032B60C11/1204B60C2011/0346B60C2011/0348B60C2011/0351B60C2011/0355B60C2011/036B60C2011/0362B60C2011/0367B60C2011/0372B60C2011/0381B60C2011/0388B60C2011/1213B60C2011/1231B60C2011/1295
Inventor 安永智一
Owner TOYO TIRE & RUBBER CO LTD