Radial tire for use in two-wheeled vehicle

A radial tire and vehicle technology, applied in motorcycle tires, special tires, vehicle parts, etc., can solve the problems of increased tread temperature, insufficient use of grip, excessive tread temperature increase, etc., to reduce excessive deformation.

Inactive Publication Date: 2012-08-29
SUMITOMO RUBBER IND LTD
View PDF6 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, an increase in the temperature of the road surface in summer causes an excessive increase in the temperature of the tread, which may soften the tread
In this case, there is a problem of excessive deformation of the tread surface and the grip cannot be fully utilized
[0005] Similarly, when running for a long time in an endurance race, etc., due to heat generation, the temperature of the tread increases excessively, so that the grip is sometimes not fully exerted

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
  • Radial tire for use in two-wheeled vehicle
  • Radial tire for use in two-wheeled vehicle
  • Radial tire for use in two-wheeled vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0085] A radial tire (size: 180 / 55ZR17) for two-wheeled vehicles was obtained, having Figure 5 The basic structure shown in and a detailed description shown in Table 1 below. In the production of tires, a first strip formed of a first rubber composition to form the main body and a second strip are helically wound alternately to form the tread Formed from a second rubber composition so as to form the support portion. The thickness t1 of the first strip is 2.0 mm and the thickness t2 of the second strip is 1.5 mm. Therefore, the ratio t2 / t1 of the thickness t2 to the thickness t1 is 0.75. The tread thus formed comprises a main body and a plurality of supports arranged axially relative to each other. Each support portion is inclined axially outward and radially from the inner side toward the outer side. This state is indicated by an "X" in the cell for the tilt direction in the table. The inclination angle α of each support portion is 20 degrees. The supporting portion is ...

Embodiment 2-7

[0087] Tires were each obtained so as to have the same structure as the tire in Example 1 except that the thickness t1 and thickness t2 were different from those in Example 1, and the ratio t2 / t1 was shown in Table 1 and Table 2 below.

Embodiment 8-13 and comparative example 2

[0089] Tires were each obtained so as to have the same structure as the tire in Example 1, except that the complex elastic modulus E2* of the support portion was different from that in Example 1, and the ratios E2* / E1* were shown in Table 2 and Table 3 below middle.

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

PropertyMeasurementUnit
thicknessaaaaaaaaaa
elastic modulusaaaaaaaaaa
thicknessaaaaaaaaaa
Login to view more

Abstract

A tire 2 includes a tread 4 having an outer surface that forms a tread surface 20. The tread 4 includes a body 28 formed of a first rubber composition, and a plurality of support portions 30 that are formed of a second rubber composition, and that are aligned with each other in an axial direction. Each of the plurality of support portions 30 extends from an inner side of the tread 4 toward the tread surface 20. The support portion 30 is formed so as to be buried in the body 28. The support portion 30 has a complex elastic modulus E2* that is greater than a complex elastic modulus E1* of the body 28. The tread 4 is formed by a first strip and a second strip being alternately wound helically.

Description

[0001] This application claims the priority of Patent Document No. 2011-41171 filed in Japan on February 28, 2011. The entire content of this Japanese patent application is incorporated herein by reference. technical field [0002] The present invention relates to radial tires for two-wheeled vehicles. Background technique [0003] From the standpoint of improving productivity, in tire production methods that have been used, a strip formed of uncrosslinked rubber is spirally wound to form components such as treads, sidewalls, and the like. This production method may be referred to as a tape winding method. An example of this production method is disclosed in JP2009-39883. [0004] Crosslinked rubbers with increased energy loss and low complex modulus of elasticity are sometimes used in tire treads in view of improved grip. In this tread, heat generation is increased due to deformation, so that the tread may be heated during running. Therefore, an increase in the temperat...

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): B60C1/00B29D30/60
CPCB60C11/00B60C2200/10B60C11/0058B60C2011/0025B60C11/005B60C11/0075Y10T152/10495
Inventor 原宪悟
Owner SUMITOMO RUBBER IND LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap