Tire wheel assembly and run-flat core

A runflat and assembly technology, applied in the direction of wheels, pneumatic tires, tire parts, etc., can solve problems such as increased cavity resonance sound, achieve the effect of reducing friction and improving durability

Inactive Publication Date: 2009-05-06
THE YOKOHAMA RUBBER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, when a runflat core including an annular shell is inserted into the cavity formed between the pneumatic tire and the rim of the wheel, the cavity resonance sound tends to increase.

Method used

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  • Tire wheel assembly and run-flat core
  • Tire wheel assembly and run-flat core
  • Tire wheel assembly and run-flat core

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0051] Including a pneumatic tire with a tire size of 215 / 55R16 and a wheel with a rim size of 16×7JJ, and inserting a leak air composed of a pair of elastic rings and an annular shell into the cavity formed between the pneumatic tire and the rim of the wheel In the tire wheel assembly of the core, a tire wheel assembly in which a sound absorbing material was provided on the annular shell of the runflat core was prepared (Examples 1 and 2). In addition, for comparison, a tire and wheel assembly (conventional example) in which no sound absorbing material was provided on the annular shell of the runflat was prepared.

[0052] In Example 1, a polyurethane foam having a tear strength (JIS K6301) of 4.5 N / cm and a sound absorption rate at 200 Hz (JIS A1405) of 18% was used as the sound absorbing material. In Example 2, as a sound absorbing material, a polyurethane foam having a tear strength (JIS K6301) of 5.5 N / cm and a sound absorption rate at 200 Hz (JIS A1405) of 12% was used. ...

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PUM

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Abstract

The present invention provides a tire / wheel assembly and a run-flat core, which enable reduction of a cavity resonance generated in a case where the run-flat core is inserted into a cavity formed between the pneumatic tire and a rim of a wheel. In the tire / wheel assembly of the present invention, the run-flat core is inserted into a cavity formed between the pneumatic tire and the rim of the wheel, the run-flat core includes a pair of elastic rings which are disposed on the rim respectively along bead portions of the pneumatic tire, and a circular shell which stretches between the elastic rings and extends in the tire circumferential direction. A sound absorbing member is provided to the circular shell.

Description

technical field [0001] The present invention relates to a tire and wheel assembly capable of running flat and a runflat core using the tire and wheel assembly. A tire / wheel assembly and a runflat core for the cavity resonance sound generated by the cavity between the rims. Background technique [0002] In response to market demands, many technologies have been proposed that enable a certain degree of emergency driving even if a pneumatic tire is punctured while the vehicle is running. Among them, there is a proposal in which a core (neutron) is inserted into a cavity formed between a pneumatic tire and the rim of a wheel, and the punctured tire is supported by the core, thereby enabling run-flat driving ( For example, refer to Patent Document 1 and Patent Document 2). [0003] The above-mentioned runflat core is composed of a pair of elastic rings arranged on the rim along the bead portion of the pneumatic tire, and an annular shell extending in the tire circumferential di...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60C17/06B60C5/00B60C17/10B60C17/04
CPCB60C17/043B60C17/10B60C17/04B60C19/002Y10T152/10495Y10T152/10009
Inventor 丹野笃
Owner THE YOKOHAMA RUBBER CO LTD
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