Pneumatic tire

A technology of pneumatic tires and tires, which is applied to tire components, tire edges, transportation and packaging, etc., can solve the problems that it is difficult to obtain bead reinforcement effect, difficult to effectively use, etc., so that the riding comfort will not be reduced and prevent The effect of productivity deterioration and productivity improvement

Active Publication Date: 2016-07-20
SUMITOMO RUBBER IND LTD
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is difficult to say that the tension of the bead reinforcing layer c is effectively used, and there is a problem that it is difficult to obtain a sufficient bead reinforcing effect corresponding to the increase in the weight of the bead reinforcing layer c.

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

[0055] Prototype has figure 1 The basic structure, and has the image 3 or Figure 4 Pneumatic tires for passenger cars (195 / 65R15) with bead reinforcement materials wound in the form of In addition, as a comparative example, a pneumatic tire without a bead reinforcing layer and a bead reinforcing material (comparative example 1) and a pneumatic tire with Figure 8 Pneumatic tires of the shown bead reinforcement layers (Comparative Examples 2 and 3). In addition, the steering stability and riding comfort of each test tire were tested, and the defective rate during production was measured. The test method is as follows.

[0056]

[0057] The trial tires were mounted on a test vehicle under the following conditions, and the steering stability and ride comfort when driving on a dry asphalt tire test course were evaluated by the driver's senses. As a result, the steering stability and the riding comfort of Example 1 were expressed on a scale of 100 with 75 points each, 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

Provided is a pneumatic tire by which productivity and handling stability are improved. A pneumatic tire (1) comprises: a carcass (6) that spans from a tread section (2), through a side wall section (3), and to a bead core (5) of a bead section (4); a bead apex rubber (8) that has a roughly triangular cross-sectional shape and extends in a tapered shape from the bead core (5) toward the tire radial outer side; and a bead reinforcement material (15) that is wound in a spiral shape around the bead apex rubber (8) or a composite (12) of the bead apex rubber (8) and the bead core (5).

Description

technical field [0001] The present invention relates to a pneumatic tire with reinforced bead portions. Background technique [0002] In recent years, along with the increase in power of vehicles and the reduction in the profile of tires, it is necessary to increase the rigidity of bead portions in order to improve steering stability. [0003] For example, if Figure 8 As shown, a pneumatic tire a is proposed in which a bead reinforcing layer c is provided on a bead portion b. The bead reinforcement layer c is arranged on the outer side of the bead apex d in the tire axial direction, and is formed along the turn-back portion f of the carcass ply e. Such a bead reinforcing layer c improves the durability and rigidity of the bead portion b, thereby improving steering stability (see, for example, Patent Document 1 below). [0004] However, such a bead reinforcing layer c has a problem of increasing the number of parts when forming a green tire, thereby reducing productivity. ...

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): B60C15/06
CPCB60C15/06B60C15/0603B60C2015/0639B60C2015/0664B60C2015/0642B60C2015/0692B60C15/0628B60C2015/061
Inventor 宫崎真一
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