CN105059061A

CN105059061A - Low-noise pneumatic radial tire of car

Info

Publication number: CN105059061A
Application number: CN201510496476.3A
Authority: CN
Inventors: 王小骥
Original assignee: Mainland Malaysia Tire (china) Co Ltd
Current assignee: Mainland Malaysia Tire (china) Co Ltd; Continental Tires China Co Ltd
Priority date: 2015-08-13
Filing date: 2015-08-13
Publication date: 2015-11-18

Abstract

The invention provides a low-noise pneumatic radial tire of a car. The low-noise pneumatic radial tire comprises a tread, wherein five main circumferential grooves extending in the circumferential direction of the tire and a plurality of pattern grooves extending in the width direction of the tire are formed in the tread; a plurality of pattern blocks are defined by the main circumferential grooves and the pattern grooves; each pattern block and one adjacent pattern groove constitute one unit pitch; six different unit pitches including a first unit pitch a, a second unit pitch b, a third unit pitch c, a fourth unit pitch d, a fifth unit pitch e and a sixth unit pitch f are arranged in the circumferential direction of the tire, and the six unit pitches have the relationship as follows: a/b is larger than or equal to 0.638 and smaller than or equal to 0.91, b/c is larger than or equal to 0.665 and smaller than or equal to 0.877, c/d is larger than or equal to 0.711 and smaller than or equal to 0.875, d/e is larger than or equal to 0.625 and smaller than or equal to 0.728, and e/f is larger than or equal to 0.76 and smaller than or equal to 0.849. According to the low-noise pneumatic radial tire of the car, the pattern unit pitches of the tire are optimized according to the low-noise tire design principle, the six different unit pitches are formed through increase or decrease, and specific permutation and combination are performed, so that the noise of the tire is reduced.

Description

There is the inflation radial tyre of passenger car of low noise

Technical field

The present invention relates to air-inflation tyre technical field, being specifically related to a kind of inflation radial tyre of passenger car for reducing travelling noise.

Background technology

The general-utility car radial tyre of passenger car that current market is at home sold, mainly in order to meet the basic demand that automobile proposes tire, the i.e. requirement of the performance such as tyre load ability, tire size, reduction squeal of tire is not all gived top priority by this series products most.Because in the past domestic, Noise Generated by Running Vehicles is not also familiar with fully, so the noise of tire does not obtain due attention yet, but along with the raising with people's living standard that develops rapidly of China's economic construction, people more and more pay close attention to the tire with low noise.The decorative pattern shape of tire constantly repeats in circumference, and the length of the one group of decorative pattern repeated is called a pattern pitch, and conventional tyre, in order to convenient for production, generally all adopts equal pitch to design, and this tire in use, easily produces larger tire and makes an uproar.

Summary of the invention

The invention provides a kind of inflation radial tyre of passenger car with low noise.

For solving the problems of the technologies described above, the present invention adopts following technical scheme:

A kind of inflation radial tyre of passenger car with low noise, comprise tyre surface, described tyre surface offers five the circumferential major troughs extended in tire circumference and the multiple pattern grooves extended on tire width direction, described circumferential major trough and pattern groove limit multiple pattern block, a described pattern block and an adjacent pattern groove form a cell pitch, six kinds of different cell pitch are circumferentially with along tire, be respectively first module pitch a, second unit pitch b, 3rd cell pitch c, 4th cell pitch d, 5th cell pitch e and the 6th cell pitch f, these six kinds of cell pitch have 0.638≤a/b≤0.91, 0.665≤b/c≤0.877, 0.711≤c/d≤0.875, the relation of 0.625≤d/e≤0.728 and 0.76≤e/f≤0.849.

Further, to the tyre surface of shoulder portion, two kinds of different cell pitch and a tire shoulder arc is provided with successively along tire width direction from the tire equatorial plane, be respectively the arc length C of the first Width cell pitch A, the second Width cell pitch B and tire shoulder arc, this three segment length has the relation of 0.604≤A/B≤0.636 and 0.861≤B/C≤0.894.

Preferably, described A:B:C equals 31:50:57, fluctuates ± 0.5.

Preferably, described a:b:c:d:e:f equals 1:1.31:1.72:2.18:3.23:4.02, fluctuates ± 0.1.

Further, the cell pitch of described tire circumference to put in order with bcaefafd be the cycle, described cycle life is 4.The cell pitch of tire circumference of the present invention is unequal, can change according to certain ratio, by six kinds of different cell pitch being combined, and having certain cycle life, the noise produced during tire rolling can be made to reach and minimize.

The cell pitch of described tire circumference also can not in accordance with periodic arrangement, particular combination can be carried out, also the object reducing tire and make an uproar can be reached, concrete order is as follows: second unit pitch, 3rd cell pitch, first module pitch, 5th cell pitch, 6th cell pitch, first module pitch, 6th cell pitch, 4th cell pitch, first module pitch, second unit pitch, 3rd cell pitch, 4th cell pitch, 5th cell pitch, 6th cell pitch, first module pitch, second unit pitch, first module pitch, 3rd cell pitch, first module pitch, 4th cell pitch, first module pitch, 5th cell pitch, 6th cell pitch, 4th cell pitch, first module pitch, 4th cell pitch, second unit pitch, 4th cell pitch, 3rd cell pitch, 4th cell pitch, 5th cell pitch, 6th cell pitch.

From above technical scheme, the present invention, according to low noise tire principle of design, is optimized tire tread cell pitch, increases or reduces the different cell pitch of formation six kinds, and carrying out specific permutation and combination, reaches the object reducing tire noise.

Accompanying drawing explanation

Fig. 1 is the tyre surface partial enlarged drawing of tire of the present invention;

Fig. 2 is the schematic diagram of the circumferential unit pitch of one-period in the present invention;

Fig. 3 is the cutaway view in tyre equatorial direction of the present invention, shows Width cell pitch.

In figure: 10, tyre surface, 20, circumferential major trough, 30, pattern groove, 40, pattern block.

Detailed description of the invention

Below in conjunction with accompanying drawing, a kind of preferred implementation of the present invention is described in detail.

As shown in Figure 1, the tyre surface 10 of described inflation radial tyre of passenger car offers five circumferential major troughs 20 and multiple pattern groove 30, described circumferential major trough 20 extends in tire circumference, described pattern groove 30 extends on tire width direction, tyre surface is divided into multiple pattern block 40 by circumference major trough and pattern groove, each pattern block and adjacent pattern groove can form a pattern pitch, the unit pitch being called circumference in tire circumference, the unit pitch being called Width on tire width direction, this pitch is made up of pattern block and adjacent circumferential major trough.

In the present invention, six kinds of different cell pitch are circumferentially with along tire, be respectively first module pitch a, second unit pitch b, the 3rd cell pitch c, the 4th cell pitch d, the 5th cell pitch e and the 6th cell pitch f, with reference to Fig. 2, these six kinds of cell pitch have the relation of 0.638≤a/b≤0.91,0.665≤b/c≤0.877,0.711≤c/d≤0.875,0.625≤d/e≤0.728 and 0.76≤e/f≤0.849.Preferably, described a:b:c:d:e:f equals 1:1.31:1.72:2.18:3.23:4.02, fluctuates ± 0.1.

According to the principle of design of low noise tire, easily produce high tire when adjacent cells pitch is equal to make an uproar, the cell pitch of tire circumference of the present invention to put in order with bcaefafd be the cycle, described cycle life is 4, change according to certain ratio, make adjacent cells pitch unequal, and by six kinds of different cell pitch are carried out particular combination, the noise produced during tire rolling can be made to reach and minimize.

Described pattern groove along tire width direction can also subsection setup often between adjacent two circumferential major troughs the position of pattern groove different, such design can make pattern block form dislocation, pattern block becomes zigzag to configure, when tyre rotation, the edge of pattern block works in turn, more excellent edge effect can be realized, in addition, the moment that pattern block contacts with road surface can change between pattern block adjacent one another are on tread width direction, can reduce pattern noise.

As shown in Figure 3, in the present invention, two kinds of different cell pitch are designed with along tire width direction, namely to the tyre surface of shoulder portion, be successively provided with two kind different cell pitch and a tire shoulder arc along tire width direction from the tire equatorial plane, be respectively the arc length C of the first Width cell pitch A, the second Width cell pitch B and tire shoulder arc, this three segment length has the relation of 0.604≤A/B≤0.636 and 0.861≤B/C≤0.894.Preferably, described A:B:C equals 31:50:57, fluctuates ± 0.5.Different units pitch on tire width direction also can play certain Noise Reduction.

The above embodiment is only be described the preferred embodiment of the present invention; not scope of the present invention is limited; under not departing from the present invention and designing the prerequisite of spirit; the various distortion that those of ordinary skill in the art make technical scheme of the present invention and improvement, all should fall in protection domain that claims of the present invention determine.

Claims

1. one kind has the inflation radial tyre of passenger car of low noise, comprise tyre surface (10), described tyre surface offers five the circumferential major troughs (20) extended in tire circumference and the multiple pattern grooves (30) extended on tire width direction, described circumferential major trough and pattern groove limit multiple pattern block (40), a described pattern block and an adjacent pattern groove form a cell pitch, it is characterized in that, six kinds of different cell pitch are circumferentially with along tire, be respectively first module pitch a, second unit pitch b, 3rd cell pitch c, 4th cell pitch d, 5th cell pitch e and the 6th cell pitch f, these six kinds of cell pitch have 0.638≤a/b≤0.91, 0.665≤b/c≤0.877, 0.711≤c/d≤0.875, the relation of 0.625≤d/e≤0.728 and 0.76≤e/f≤0.849.

2. inflation radial tyre of passenger car according to claim 1, it is characterized in that, to the tyre surface of shoulder portion, two kinds of different cell pitch and a tire shoulder arc is provided with successively along tire width direction from the tire equatorial plane, be respectively the arc length C of the first Width cell pitch A, the second Width cell pitch B and tire shoulder arc, this three segment length has the relation of 0.604≤A/B≤0.636 and 0.861≤B/C≤0.894.

3. inflation radial tyre of passenger car according to claim 2, is characterized in that, described A:B:C equals 31:50:57, fluctuates ± 0.5.

4. inflation radial tyre of passenger car according to claim 1, is characterized in that, described a:b:c:d:e:f equals 1:1.31:1.72:2.18:3.23:4.02, fluctuates ± 0.1.

5. inflation radial tyre of passenger car according to claim 1, is characterized in that, the cell pitch of described tire circumference to put in order with bcaefafd be the cycle, described cycle life is 4.

6. inflation radial tyre of passenger car according to claim 1, it is characterized in that, the cell pitch of described tire circumference puts in order as second unit pitch, 3rd cell pitch, first module pitch, 5th cell pitch, 6th cell pitch, first module pitch, 6th cell pitch, 4th cell pitch, first module pitch, second unit pitch, 3rd cell pitch, 4th cell pitch, 5th cell pitch, 6th cell pitch, first module pitch, second unit pitch, first module pitch, 3rd cell pitch, first module pitch, 4th cell pitch, first module pitch, 5th cell pitch, 6th cell pitch, 4th cell pitch, first module pitch, 4th cell pitch, second unit pitch, 4th cell pitch, 3rd cell pitch, 4th cell pitch, 5th cell pitch, 6th cell pitch.