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Tire noise reduction device and pneumatic tire

一种充气轮胎、轮胎的技术，应用在充气轮胎、轮胎零部件、车轮等方向，能够解决轮胎噪音降低、装置总质量增加、1次成分恶化等问题，达到改善车体振动、避免重量的增加、维持降低效果的效果

Inactive Publication Date: 2010-06-02
THE YOKOHAMA RUBBER CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the addition of the mass adjustment member, there is a problem that the total mass of the tire noise reduction device increases
Furthermore, the primary component of the vehicle body vibration deteriorates during high-speed driving, so the improvement effect of the vehicle body vibration is low, and the vehicle body vibration cannot be sufficiently improved.

Method used

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  • Tire noise reduction device and pneumatic tire
  • Tire noise reduction device and pneumatic tire
  • Tire noise reduction device and pneumatic tire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0046] Tire noise reduction devices (test products) 1 to 4 mounted on pneumatic tires with a tire size of 215 / 60R16 (tire inner circumference: 1970 mm) were manufactured with the outer circumference L of the elastic fixing band changed as shown in Table 1. A polyurethane foam (150 mm in width, 480 mm in length, and 20 mm in thickness) was used for the sound absorbing material of each test product. The total mass of the two sound absorbing materials of each test product was 82 g. In addition, the mass of the test product was set at the same 125 g, and the elastic fixing band of the test product was made of polypropylene resin. In addition, Test Product 4 is a conventional tire noise reduction device.

[0047] With respect to these Test Products 1 to 4, a vibration evaluation test was performed by the test method shown below, and the results shown in Table 1 were obtained. In addition, in Figure 5 The middle represents the line graph after plotting the result.

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PUM

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Abstract

Provided is a tire noise reduction device which is installed on the inner surface of a tread part facing the hollow part of a pneumatic tire. The tire noise reduction device comprises an annular elastic fixing band and sound absorbing members made of a porous material installed on the inner surface of the tread part at two circumferentially opposite positions by the elastic fixing band. The elastic fixing band has an outer peripheral length (L) in a certain range specified by its relation with the mass (Wa) of the sound absorbing material, the overall mass (We) of the tire noise reducing device, and the inner peripheral length (Li) of the tire.

Description

technical field [0001] The present invention relates to a tire noise reduction device and a pneumatic tire, and more specifically, to a tire noise reduction device capable of improving vehicle body vibration and a pneumatic tire equipped with the tire noise reduction device. Background technique [0002] The cavity resonance phenomenon that occurs in the airtight tire cavity formed between the rim of the wheel and the pneumatic tire mounted on the rim is a major cause of tire noise. For example, this cavity resonance phenomenon is related to the noise that can always be heard around 250 Hz during driving, and the impact sound generated when the vehicle crosses a joint on the road, and the like. [0003] As a tire noise reduction device that reduces noise caused by such a cavity resonance phenomenon, there are known types in which, for example, the cross-sectional area of ​​the cavity of the tire is changed along the tire circumferential direction, and a sound absorbing membe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60C5/00
CPCB60C19/002Y10T152/10495
Inventor 池田俊之丹野笃秋好靖二竹谷昌之
Owner THE YOKOHAMA RUBBER CO LTD