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

Pneumatic tire

一种充气轮胎、胎面的技术，应用在轮胎测量、轮胎零部件、车轮等方向，能够解决磨损指示器占有体积大、影响外观、缺胶（bare等问题，达到抑制缺胶现象的效果

Active Publication Date: 2013-09-11
TOYO TIRE & RUBBER CO LTD
View PDF11 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the pneumatic tire described in Patent Document 1 needs to open and provide recesses on the tread surface, which affects the appearance.
[0006] In addition, in the pneumatic tire described in Patent Document 2, since dimples are formed on the main grooves, there is a problem that cracks are easily generated from the dimples.
[0007] Furthermore, in the pneumatic tire described in Patent Document 3, the wear indicator occupies a large volume, and a bare phenomenon (exposed surface of unvulcanized rubber compound caused by poor rubber flow) occurs during vulcanization molding, which may cause Reasons for poor appearance

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

[0056] Table 1 is the above Figure 2 to Figure 7 As a result of comparing Examples 1-6 with Comparative Examples 1 and 2 in terms of defective rate (ratio of missing glue), visibility, and durability. Comparative example 1 such as Figure 8 It is shown that no recess 6 is formed in the wear indicator 5 . Comparative example 2 such as Figure 9 As shown, grooves 7 extending in the circumferential direction are formed at two places on both sides (both groove wall sides of the main groove 2 ). The volume sum of the groove 7 at this moment is 7mm 3 , relative to the overall volume of the wear indicator, the volume ratio is 2%.

[0057] The defective rate (shortness occurrence index) represents the ratio of tires with a lack of rubber when 100 test tires with wear indicators 5 of Examples 1-6 and Comparative Examples 1 and 2 were vulcanized and molded. The confirmation indicates the index of other pneumatic tires when the index of the pneumatic tire of Comparative Example 1 i...

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. Bare can be prevented from occurring in a wear indicator. The pneumatic tire has a wear indicator 5 at the groove bottom of a main groove 2 formed in a tread surface 1 and extending in the circumferential direction. The wear indicator 5 is formed in the surface thereof with at least one recess 6.

Description

technical field [0001] The present invention relates to a pneumatic tire, and more particularly, to a pneumatic tire having a wear indicator at the groove bottom of a main groove. Background technique [0002] In the prior art, as a pneumatic tire having a wear indicator formed on the bottom of the main groove of the tread portion, there is known a structure in which at least one of the main groove wall portions on both sides in the groove width direction of the wear indicator At least one protrusion for forming a recess opening to the tread tread is protrudingly provided on the main groove wall portion (for example, refer to Patent Document 1). [0003] As another pneumatic tire having a wear indicator formed at the bottom of the main groove of the tread portion, there are known tires in which the groove bottom of the wear indicator tire is circumferentially front and rear or the groove walls on both sides of the left and right sides are provided with dimples (for example, ...

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): B60C11/24
CPCB60C11/24B60C11/1369B60C2011/1361Y10T152/10027
Inventor 佐藤芳树
Owner TOYO TIRE & RUBBER CO LTD