Pneumatic tire

一种充气轮胎、轮胎的技术，应用在轮胎零部件、轮胎胎面/胎面花纹、运输和包装等方向，能够解决胎块刚性下降、偏磨损、干燥路面操纵稳定性能恶化等问题，达到排水性能提高、抑制偏磨损、实现刚性的效果
CN101856954AInactive Publication Date: 2010-10-13SUMITOMO RUBBER IND LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SUMITOMO RUBBER IND LTD
Publication Date
2010-10-13
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a pneumatic tire, which can prevent partial abrasion and promote the performance on ice and snow road. A rotating direction (R) is defined on the pneumatic tire. The pneumatic tire has a first V-shaped groove (10A) and a second V-shaped groove (10B), wherein the first and second V-shaped grooves (10A;10B) are terminated within the rib (5); one end (14) of the first V-shaped groove (10A) is communicated with a crown circumferential groove(3A) while the other end (15) exceeds a tire equator (C) but not reach another crown circumferential groove (3B); one end of the second V-shaped groove (10B) is communicated with a crown circumferential groove(3B) while the other end exceeds a tire equator but not reach the crown circumferential groove (3B); and the first and second V-shaped grooves (10A;10B) comprise a primary part (11) which extends from one end to the tire equator along the rotating direction and a bent part (12) which is connected to the primary part and is substantially bent on the tire equator along the direction reverse to the rotating direction.
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Description

technical field

[0001] The present invention relates to a tire that can be driven to a certain extent on ice and snow roads in addition to dry roads, and in particular, a pneumatic tire that can suppress the occurrence of partial wear and improve performance on ice and snow roads. Background technique

[0002] Conventionally, it is known that block rigidity is increased by increasing the land ratio of the tread portion as much as possible in order to improve handling stability on dry roads. However, if the land ratio is increased too much, the on-snow performance tends to deteriorate due to a decrease in the snow column cutting effect on the snowy road due to a decrease in the groove volume.

[0003] In addition, it is known to form sipes on tire blocks or the like and to increase bead components for the purpose of improving steering stability on icy and snowy roads. However, they have problems in that an increase in the number of sipes leads to a decrease in block rigidity...

Claims

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