CN1613673A

CN1613673A - Pattern structure of high aerated tire for cross country vehicle

Info

Publication number: CN1613673A
Application number: CNA2004100871795A
Authority: CN
Inventors: 洪永秀
Original assignee: Hankook Tire Co Ltd
Current assignee: Hankook Tire and Technology Co Ltd
Priority date: 2003-11-06
Filing date: 2004-11-04
Publication date: 2005-05-11
Anticipated expiration: 2024-11-04
Also published as: CN100339242C; KR20050043454A; KR100604077B1

Abstract

The present invention principally relates to pneumatic tires mounted at sport type multifunctional vehicles or light trucks, especially relates to a tread pattern structure of a pneumatic tire with cross-country high-performance and used for improving a draft force at spread/dispread roads, mud roads, wet roads, snow roads and the like. According to said pattern structure, in pneumatic tires having pattern blocks and transversal furrow patterns at the tread and the tire shoulder parts, zigzag main pattern channels are formed between the central blocks at the tread, broad transversal furrow shaped pattern channels with equal intervals are formed at the tire shoulder part and along the circumference direction of tyres, the structure of the contact sites with road surfaces or the most upper end part of the side wall of the most early contact part of the pattern blocks place at said central blocks and tire shoulder part and at the advancing direction of tyres is as follows: an inclined part of conical contour and with an angle of about 40-50 deg is formed at a part of 10-20% by depth (H) of that from the surface to the bottom of tyres.

Description

Cross-country with the airtyred tread pattern structure of High Performance

Invention field

The present invention relates generally to the air-inflation tyre of installing on the vehicles such as sport utility vehicle or light truck, especially, relate to the airtyred tread pattern structure of High Performance of the cross-country usefulness of tractive force of mating formation/improving on non-paving road, road, wet road, the snow road etc.

Background technology

Vehicle tyre generally can not adapt to all peripheries and environmental conditions.For example, in the apparent in view area of the differentiation in the four seasons, for purposes and the usage condition thereof that cooperates various vehicles, need changing of tire at any time, the function beyond the tire product that perhaps has can not be brought into play and earmark has the shortcoming of making troubles to the customer.

Therefore, in order to eliminate such inconvenience to a certain extent, all-year tire has been proposed.This all-year tire have need not be along with the variation in the four seasons advantage of changing of tire, what have solved customer's inconvenience.Recently, beyond above-mentioned functions, the tractive force performance on road, non-paving road, wet road and snow road etc. is also had cooresponding requirement, such all-year tire that can satisfy many purposes function and performance is also few.

Recently, consumer alert's high-performance tire extremely, because the combination of the tread grooves of broad and the sizing material (compound) that cooperated, road-holding property is good, the customer has the tendency of increase to the hobby of this tire.

On the other hand, to (Ultra High Performance Tire: the very-high performance tire) definition of Qu Bie high-performance tire is according to the different of tire manufacturing company and more or less different with UHPT.Usually, be meant can run at high speed, tire that flat ratio is lower, the feature of such tread bar is to be shaped as V-arrangement, with general passenger vehicle with radial-ply tyre relatively, pattern block shaped design bigger pursued and handled and the raising of deceleration and stopping performance.

And, though adapting to the usage condition of the road of mating formation, the tire tread form of automobile tyre forms, part user need use under two kinds of road conditions of mat formation road and non-paving road, especially, need go up the tire of performance premium properties the non-region of mating formation (promptly avenging road, road, Sha Lu).Such user is in order to satisfy above-mentioned performance, and it is just passable with tire (Mud Tire) to change the tire that generally uses into road, and the feature of such tire is that the wider width of tread void is darker, and tread block is bigger.

But,, bring some problems though High Performance in the past and even all-year tire can improve the performance on the non-paving road.

For example, this tread of tyre pattern block shape is too big, has the tendency of noise and general performance step-down on mat formation road bigger than general tire.

Summary of the invention

The present invention the object of the present invention is to provide the cross-country airtyred tread pattern structure of High Performance of using for the problems referred to above that solve prior art propose, and improves the noise problem on the road of mating formation, and improves the tractive force performance on the non-paving road.

To achieve the above object, of the present invention being constructed as follows, have in the air-inflation tyre of pattern block and traverse furrow (lug) decorative pattern at tyre surface and tire shoulder portion, between the center running lug of above-mentioned tyre surface, form zigzag main groove, in tire shoulder portion, equally spaced be formed with the groove of wide traverse furrow shape along the circumferencial direction of tire, at above-mentioned center running lug and pattern block on tire shoulder place, the 10-20% that the top portion of the sidewall of the part that contacts at first with the direct of travel of tire promptly constitutes in the degree of depth from the tread surface to the bottom surface with the contact site, road surface partly forms the taper rake of the 40 °～50 ° of angles of having an appointment.

Description of drawings

Fig. 1 is the planar view of tread of tyre part, has shown the tread pattern structure of pneumatic tires according to the present invention;

Fig. 2 is the amplification sectional view of the I-I line of Fig. 1;

Fig. 3 is the amplification sectional view of the II-II line of Fig. 4;

Fig. 4 is the amplification oblique drawing according to center running lug of the present invention;

Fig. 5 is the tire of the present invention and the comparison diagram of the various functions of tire in the past.

The explanation of preferred embodiment

Below, with reference to the accompanying drawings, to a preferred embodiment of the present invention will be described in detail.

Fig. 1 is the planar view according to tread of tyre of the present invention part, and Fig. 2 and Fig. 3 are respectively the amplification sectional views of the II-II line of the I-I line of Fig. 1 and Fig. 4, and Fig. 4 is the amplification oblique drawing according to center running lug of the present invention.

Of the present invention being constructed as follows has in the air-inflation tyre of pattern block and traverse furrow decorative pattern at tyre surface 1 and tire shoulder portion 2 places, between the center running lug 3 of tyre surface 1, is formed with zigzag main groove 4,5,6.In tire shoulder portion 2, equally spaced be formed with the groove 7 of wide traverse furrow shape along the circumferencial direction of tire.At above-mentioned center running lug 3 and pattern block on tire shoulder 8 places, be formed at the taper rake 9 that 10～20% part from tyre surface 1 surface to the bottom surface depth H forms about 40 °～50 ° of angles in the position that topmost promptly contacts of the sidewall of contact portion at first with the road surface with the tire direct of travel.

And in the above-mentioned center running lug 3, the position that the sidewall with tyre surface 1 surface and main groove 4,5,6 of rounded portions 10 joins has the curved surface that radius is 2～10mm.

Such taper rake 9 and rounded portions 10 have following function, promptly make tire of the present invention in motion, and the friction noise that the tip edge portion of center running lug 3 and road surface and air press contacts take place reduces.

In addition, in the center running lug 3 and pattern block on tire shoulder 8 that form above-mentioned tyre surface 1, the Sidewall angles a of the top of the pattern block of the part that contacts at first with direct of travel during with tire running and formed each pattern block of direct of travel, b, c, d form below 45 °, and such pattern block shape can be brought into play sharp keen edge effect on the direct of travel of tire.

And, on the circumferencial direction of above-mentioned center running lug 3 and pattern block on tire shoulder 8, surpassing 25% the position be about pattern block length, angle e, the f of the direct of travel of tire and the formation of pattern block top formed the angle that has more than 45 °.Like this, has the effect of abolishing ground-surface curtain (as moisture film, snow deposit, ice sheet etc.) on the top of pattern block thereby contacting the tractive force that improves direct of travel afterwards with the road surface.

In addition, in the above-mentioned center running lug 3, be formed with this pattern block separation groove 11 divided into two parts, the degree of depth h of this separation groove 11 form main groove 4,5,6 depth H 70～30% in, its width W forms more than the 0.6mm, the distal portion of above-mentioned separation groove 11 forms auxiliary groove 12, and its width W 1 is for separating 150～300% of groove 11 width, and its degree of depth is about 80～100% of main groove 4,5,6 depth H.

The separation groove 11 of above-mentioned center running lug 3 and auxiliary groove 12 play a part to obtain balance, inhibition ground-surface impact absorption and the inordinate wear of pattern block rigidity and the drainage performance on raising rain road and the road.

On the other hand, the width W 2 of the zigzag main groove 4,5,6 in the above-mentioned tyre surface 1 be set to tyre surface 1 overall width W3 3～10%, the width of the B of this tyre surface 1, C part is no more than 80～95% of B than being restricted to C.

And the width W 4 of the groove 7 of the traverse furrow shape of above-mentioned tire shoulder portion 2 forms 10～15% of tread width W3, has improved the tractive force performance.

In addition, the tractive force on the road reaches maximum at non-paving road and snow in order to make, the area ratio of tyre surface 1 position and contact site, road surface be the ground connection rate in 40～70% scope, the difference of the ground connection rate at B position and C position is designed to have 3～10% difference.

Fig. 5 is the comparison diagram according to the tire of High Performance air-inflation tyre of the present invention and prior art, and as can be known, tire of the present invention is at the tire that all is better than prior art aspect noise problem and the tractive force from the way.

Above-mentioned according to the cross-country advantage that can reduce noise, on multiple road surface, bring into play good tractive force that has with the airtyred tread pattern structure of High Performance of the present invention.

Claims

1. cross-country wherein have pattern block and traverse furrow decorative pattern at tyre surface and tire shoulder portion with the airtyred tread pattern structure of High Performance, it is characterized in that,

Between the center running lug of described tyre surface, be formed with serration master groove, equally spaced be formed with wide traverse furrow shape groove in tire shoulder portion along the circumferencial direction of tire, at described center running lug and pattern block on tire shoulder place, as with the tire direct of travel at first the sidewall of contact portion the top portion with the contact site, road surface, at the taper rake (9) that has 40 °～50 ° of angles to 10～20% part of the bottom surface degree of depth (H) from tyre surface (1) surface.

2. as claimed in claim 1 cross-countryly it is characterized in that with High Performance airtyred tread pattern structure, the circular portion in the described center running lug has the curved surface that radius is 2～10mm at the position that the sidewall of tread surface and main groove joins.

3. as claimed in claim 1 cross-country with the airtyred tread pattern structure of High Performance, it is characterized in that, in the center running lug and tire shoulder portion pattern block that form described tyre surface, the Sidewall angles of each pattern block that the top of the pattern block at the position that the direct of travel during with tire running contacts is at first become with direct of travel (a, b, c, d) is below 45 °.

4. as claimed in claim 1 cross-country with the airtyred tread pattern structure of High Performance, it is characterized in that, on the circumferencial direction of described center running lug and pattern block on tire shoulder, surpassing the position that is about described pattern block length 25%, the formed angle of the direct of travel of tire and pattern block top (e, f) is more than 45 °.

5. as claimed in claim 1 cross-country with the airtyred tread pattern structure of High Performance, it is characterized in that, in described center running lug, be formed with this pattern block separation groove divided into two parts, the degree of depth of this separation groove (h) forms and is no more than 70～30% of the main groove degree of depth (H), its width (W) forms more than the 0.6mm, the end portion of described separation groove is formed with auxiliary groove, its width (W1) is 150～300% of a described separation groove width, and its degree of depth is about 80～100% of the main groove degree of depth (H).

6. as claimed in claim 1 cross-country with the airtyred tread pattern structure of High Performance, it is characterized in that, the width (W2) of the serration master's groove in the described tyre surface is 3～10% of a tyre surface overall width (W3), the ratio of the B of this tyre surface, C width be limited in C be B 80～95% in.

7. as claimed in claim 1 cross-countryly it is characterized in that with High Performance airtyred tread pattern structure, the width (W4) of the traverse furrow shape groove of described tire shoulder portion forms 10～15% of tyre surface overall width (W3).

8. cross-countryly it is characterized in that with High Performance airtyred tread pattern structure, the area ratio of tyre surface position and contact site, road surface be the ground connection rate in 40～70% scopes, the ground connection rate at B position and C position has 3～10% difference.