Tread pattern groove capable of reducing tire pumping noise

A tread pattern, tire pattern technology, applied in the direction of tire tread/tread pattern, tire parts, rolling resistance optimization, etc., can solve the problems of negligible tire noise performance, increased manufacturing cost, cumbersome manufacturing process, etc. Multiple properties, avoid force accumulation, low noise effect

Pending Publication Date: 2018-09-04
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, in the domestic patent CN103101405A, a V-shaped groove is set in the groove to reduce the noise of the pattern. Although this patent can reduce the noise to a certain extent, this design alone will cause the concentration of the tire stress and cause tearing.
The patent CN103158438A applied by the Koreans in China reduces tire noise by adding a sound-absorbing structure inside the tire cavity. This invention is a great challenge for manufacturing. The manufacturing process is quite cumbersome and will increase manufacturing costs.
The domestic patent CN103112320A reduces the pattern noise by designing the pattern block. This invention only makes the arc transition at the corner of the pattern block, and the improvement of the overall tire noise performance is negligible.

Method used

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  • Tread pattern groove capable of reducing tire pumping noise
  • Tread pattern groove capable of reducing tire pumping noise
  • Tread pattern groove capable of reducing tire pumping noise

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] figure 2 A single arc-shaped raised pattern groove designed as a rectangular patterned groove perpendicular to the sidewall of the patterned groove; the peak of the arc-shaped raised pattern is located in the middle of the chord of the arc-shaped raised pattern.

[0049] It belongs to a kind of pattern groove of car tires. The original vertical plane longitudinal groove side wall is designed to have an arc-shaped convex pattern groove side wall. The radius of the arc-shaped convex arc contour line is between 2-15mm. The depth of this pattern groove is between 5-10mm. That is, the curvature of the arc contour line and the position of the convex peak can be adjusted according to the form of the pattern and the load. The curved design of the side wall of the pattern groove can increase the rigidity of the pattern groove, reduce the lateral deformation of the pattern and reduce the pumping noise of the pattern. The curvilinear design of the side wall of the pattern can p...

Embodiment 2

[0051] image 3 It is a plurality of arc-shaped convex pattern grooves designed for the vertical rectangular pattern grooves on the sidewall of the pattern groove. pattern. The radius of the arc contour line of each arc-shaped protrusion is between 2-15 mm. The curve arc radii corresponding to each convex peak of the multi-arc raised pattern groove is a proportional sequence, that is, R1: R2=R2: R3=R3: R4=...=X, the value of X Between 0.5-2. where R 1 , R 2 , R 3 , R 4 ,...,R N , R N-1 are the radii of the 1st, 2nd, 3rd, 4th, ..., N-1, and N arc-shaped convex arcs, respectively. The radius of the designed curved arc can gradually decrease from near the tread to the bottom of the groove, and can also gradually increase. The side wall of the pattern designed in such a curve can play a guiding role for the fluid in the groove, so that water or air can flow through the groove in an orderly manner, reducing the force of the fluid on the side wall of the pattern and the bo...

Embodiment 3

[0053] Figure 4 It is: a plurality of arc-shaped convex pattern grooves designed for vertical rectangular pattern grooves on the side walls of the pattern grooves, and the convex peaks of the arc-shaped projections are located below the middle of the chord of each arc-shaped projection s position.

[0054] For the pattern groove with multiple convex peaks at the lower position of the convex peaks, the curved arc corresponding to each convex peak on the side wall of the pattern is composed of two circular arcs. For the upper large arc and the lower small arc, the radius of curvature of the large arc is R’, and the radius of curvature of the small arc is r, where R 1 ’: R 2 ’ = R 2 ’: R 3 ’ = R 3 ’: R 4 ’=…=R N ’: R N-1 '=Y, the value of Y is between 0.5-2. where R 1 ’ between 2-15mm. r 1 :r 2 = r 2 :r 3 = r 3 :r 4 =…=r N :r N-1 =y, the value of y is between 0.5-2. This curve design is based on the physical model of water droplets falling in the air, which c...

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PUM

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Abstract

The invention provides a tread pattern groove capable of reducing tire pumping noise. The tread pattern groove is characterized in that at least one arc protrusion protruding towards the groove direction is arranged on a lateral wall of the tread pattern groove, and a chord of an arc contour line of the arc protrusion is perpendicular to the bottom of the tread pattern groove or inclines towards the outer side of the groove relative to the perpendicular line of the bottom surface of the tread pattern groove. The tread pattern groove disclosed by the invention can control pattern deformation and the deformation direction. Meanwhile, multiple terms of performance of tire noise performance, tire rolling resistance, water skiing performance and the like can be improved.

Description

technical field [0001] The invention relates to the field of tires, in particular to a tread pattern groove for reducing tire pumping noise. Background technique [0002] When the vehicle speed is above 70km / h, tire noise becomes the main noise source. Especially the aerodynamic noise of the tire is one of the most important factors affecting the tire noise. How to optimize the tire tread structure and improve the tire tread noise has increasingly become the focus of domestic and foreign scholars and enterprises. And the pattern design is related to the rolling resistance and wet skid performance of the tire. The traditional design cannot realize the synergistic improvement between the three by changing the tread formula. [0003] During the rolling process of the tire, the internal airflow will generate noise when the longitudinal pattern groove is deformed by the tread, and the transverse pattern groove will generate obvious pumping noise. The main principle is that wh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60C11/13
CPCB60C11/1307B60C2011/1338Y02T10/86
Inventor 周海超姜震杨建梁晨王国林钱浩乔磊沈飞
Owner JIANGSU UNIV
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