Unlock instant, AI-driven research and patent intelligence for your innovation.

Pneumatic tire

A pneumatic tire, tire circumferential technology, applied to tire parts, tire tread/tread pattern, transportation and packaging, etc., can solve the problems of increased deformation of land parts, poor turning performance, etc., to improve turning performance , Maintain the effect of snow handling stability

Active Publication Date: 2018-06-15
TOYO TIRE & RUBBER CO LTD
View PDF11 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the rigidity of the land portion decreases against a force in a specific direction, and thus, the deformation of the land portion increases
According to this, especially the dry road cornering performance of the tire will be deteriorated, therefore, it is difficult to use such a pneumatic tire in all seasons

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Pneumatic tire
  • Pneumatic tire
  • Pneumatic tire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0091] Example 1 is figure 1 and figure 2It relates to the tire 1 according to the above-mentioned embodiment. Specifically, in each middle land portion 6 of Embodiment 1, the distances W2, W3 from the end edges of the circumferential grooves 3, 4 to the curved portions 8a, 9a of the land grooves 8, 9 are the width W1 of the land portion 6. 2 / 11 (more than 1 / 9 and less than 2 / 9), therefore, the curved parts 8a, 9a are arranged in the central parts A11, A21 of the end regions A1, A2.

Embodiment 2

[0093] With respect to the tire according to Example 1, Example 2 is a tire in which the positions of the curved portions 8 a and 9 a are changed in each middle land portion 6 . Specifically, in each middle land portion 6 of Embodiment 2, the distances W2, W3 from the end edges of the circumferential grooves 3, 4 to the curved portions 8a, 9a of the land grooves 8, 9 are equal to the width W1 of the land portion 6. 7 / 22 (more than 2 / 9 and less than 1 / 3), therefore, the curved portions 8a, 9a are arranged on the inner sides A12, A22 of the end regions A1, A2.

Embodiment 3

[0095] With respect to the tire according to Example 1, Example 3 is a tire in which the positions of the curved portions 8 a and 9 a are changed in each middle land portion 6 . Specifically, in each middle land portion 6 of Example 3, the distances W2, W3 from the end edges of the circumferential grooves 3, 4 to the curved portions 8a, 9a of the land grooves 8, 9 are less than the width W1 of the land portion 6. 1 / 11 (more than 0 and less than 1 / 9), therefore, the curved portions 8a, 9a are arranged on the outer sides A13, A23 of the end regions A1, A2.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a pneumatic tire. A pneumatic tire includes a tread portion having a plurality of grooves which extend along a tire peripheral direction, and a plurality of land portions which are comparted in the plurality of peripheral grooves, at least one the land portion includes at least one first land groove which extends so as to have one bent portion formed into a convex shape toward one side in the tire peripheral direction, and at least one second land groove which extends so as to have one bent portion formed into a convex shape toward the other side in the tire peripheraldirection.

Description

technical field [0001] The present invention relates to a pneumatic tire including a plurality of land portions defined by a plurality of circumferential groove regions. Background technique [0002] Conventionally, a pneumatic tire including a plurality of land portions defined by a plurality of circumferential grooves extending in the tire circumferential direction is known as a pneumatic tire. In addition, the land portion has a plurality of land grooves, and these land grooves extend so as to have a curved portion, so that the tire has excellent handling stability on ice (for example, Patent Documents 1 and 2). [0003] However, in each land portion of the pneumatic tires according to Patent Documents 1 and 2, the curved portion of the land groove is formed in a convex shape facing the same direction in the tire circumferential direction. Therefore, the rigidity of the land portion decreases against a force in a specific direction, and thus, the deformation of the land ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B60C11/12B60C11/03
CPCB60C11/03B60C11/1272B60C2011/1277B60C2011/1286B60C11/0306B60C11/1204B60C2011/0358B60C2011/0381B60C2011/1209
Inventor 高桥聪一
Owner TOYO TIRE & RUBBER CO LTD