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

Runflat tire

一种漏气保用、轮胎的技术，应用在充气轮胎、轮胎零部件、轮胎胎面/胎面花纹等方向，能够解决妨碍漏气保用耐久性等问题，达到提高耐久性的效果

Active Publication Date: 2014-03-12
SUMITOMO RUBBER IND LTD
View PDF6 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] As a result, it is difficult to form dimples and protrusions on the side of the bead portion, which prevents further improvement of runflat durability.

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
  • Runflat tire
  • Runflat tire
  • Runflat tire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0084] Trial-manufactured according to the specifications in Table 1 to form a figure 1 Run-flat tire of the construction shown (tire size 235 / 55R18). And, the runflat durability of each test tire was tested and compared with each other. The internal structure of each tire is substantially the same. In addition, rectangular dimples having a radial length of 8.8 mm, a circumferential length of 20.0 mm, and a depth of 3 mm were used as the dimples and / or the protrusions. The number of rows of dimples and / or tabs is two.

[0085] In addition, Comparative Example 1 is a conventional example in which all the signage spaces (regulatory signage space and non-legal signage space) are formed in the first signage space forming region. Comparative Example 2 is an example in which the first marking space forming region is not formed, but a dimple and / or a lug portion forming region (Ha=0) is formed along the rim line. Embodiments 1 and 5 are examples of complying with regulations and ...

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 provides a runflat tire, which enhances the durability of deflated runflat tires while complying with regulations. In a runflat tire, a dimple / fin forming region is provided on the external surface of a sidewall portion. First and second marking-space forming regions are formed respectively on the outer and inner sides of the dimple / fin forming region in a radial direction of the tire. In the first marking-space forming region, first marking spaces are formed to include a main regulation-marking space to mark the contents of regulations except for UTQG ratings. In the second marking-space forming region, the second marking spaces are formed to include spaces for marking the non-regulated contents and / or the UTQG ratings. When measured from the rim line to the inner edge of the innermost dimple / fin row in a radial direction of the tire, height (Ha) in a radial direction of the tire is set at 8-17 mm.

Description

technical field [0001] The present invention relates to a run-flat tire having improved run-flat durability. Background technique [0002] For example, conventionally, various run-flat tires have been proposed that can travel a long distance even after the air inside the tire has leaked due to a puncture or the like. As a typical run-flat tire, a side-reinforced run-flat tire is known in which a side-wall reinforcing rubber layer having a crescent-shaped cross section is provided on a side wall portion. [0003] However, even though it is a run-flat tire, the sidewall portion during run-flat driving undergoes large bending deformation, which causes the sidewall portion to generate heat as the running distance and / or speed increase, and thus sometimes produces The sidewall reinforcement rubber layer is damaged, etc., and it is impossible to drive. [0004] Therefore, in recent years, a run-flat tire has been proposed in which a plurality of concave dimples, ie, dimples, are...

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): B60C13/00B60C17/00
CPCB60C2017/0063B60C17/0009B60C13/001B60C13/02B60C17/0045B60C5/142B60C17/08B60C11/01B60C15/024
Inventor 汤川直树
Owner SUMITOMO RUBBER IND LTD