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Pneumatic tire

A technology for pneumatic tires and tires, which is applied to the reinforcement layer of pneumatic tires, tire parts, rolling resistance optimization, etc. It can solve the problems of radio wave obstacles, increased tire resistance, and high electrical insulation, so as to prevent static electricity accumulation and ensure electrical conductivity. , The effect of improving low rolling resistance performance and high-speed durability

Inactive Publication Date: 2014-04-23
SUMITOMO RUBBER IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, silicon dioxide, due to its high electrical insulation, increases the resistance of the tire and stores static electricity in the vehicle, causing radio wave disturbances, etc., which are the cause of most electrical malfunctions.

Method used

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  • Pneumatic tire
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0061] Prototype has figure 1 The basic structure of the pneumatic tire (model 195 / 65R15), the high-speed durability and resistance of each test tire were measured, and the results are shown in Table 1. In addition, the structures of the tread ends of Comparative Example 1 and Comparative Example 2 are shown in FIGS. 8(A) and (B). Except for the specifications listed in the table, the other specifications are actually the same.

[0062] In addition, only the terminal part, tread base rubber, end outer cover rubber, buffer rubber, lap joint rubber and inner conductive rubber layer use a volume intrinsic resistance of less than 1×10 5 Conductive rubber material of Ωcm, other rubber materials use a volume intrinsic resistance of 1.0×10 8 Insulating rubber material above Ωcm.

[0063] The tape width Ws of the tape tape was 10.0 mm, and the width Wq of the overlapping area Q of the end cover tape was 25.0 mm.

[0064]

[0065] use as Figure 7 Shown, contains and is arranged...

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PUM

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Abstract

The inventive pneumatic tire is object to not only improve low rolling resistance performance and high speed durability, but also ensure tire electroconductivity. As a string course composed of helically winded bridle adhesive tapes has a bridle extending part extending the belted layer at the axial external side of the tire. The outer end part of the belted layer is coated by the U-shape end outer cover glue. The string course has a partition part at the overlap setting area in overlap setting with the outer piece part of the end outer cover glue, the coiling parts of the bridle adhesive tape are apart from each other at an interval more than 0.5mm. By entering a pat of tread radix part glue into the partition part, the tread radix part glue configured at the radial inside and outside of the string course is contacted to the end outer cover glue, and the terminal part, the tread radix part glue, the end outer cover glue and the buffering glue are electrically conducted to one another.

Description

technical field [0001] The present invention relates to a pneumatic tire that suppresses static electricity from being stored in a vehicle. Background technique [0002] There is a proposal to use silica instead of carbon black as a reinforcing agent for tread rubber in order to improve the fuel economy of automobiles and reduce exhaust gas. It has advantages such as low rolling resistance performance and wet grip performance such as low rolling resistance and wet grip performance due to low hysteresis loss maintained on the low temperature side, and low rolling resistance due to low hysteresis loss on the high temperature side coexist. On the other hand, silica has high electrical insulation, which increases the resistance of tires, and static electricity is stored in vehicles, causing radio wave disturbances, etc., which are the cause of most electrical malfunctions. [0003] Therefore, there are proposals for a structure (so-called pen structure) in which a thin tread b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60C9/00B60C19/08
CPCY02T10/86
Inventor 信近英男
Owner SUMITOMO RUBBER IND LTD
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