CN212171842U

CN212171842U - High mileage tire

Info

Publication number: CN212171842U
Application number: CN202020169156.3U
Authority: CN
Inventors: 倪盼; 王宝凯; 刘琦
Original assignee: Sailun Jinyu Group Co Ltd
Current assignee: Sailun Jinyu Group Co Ltd
Priority date: 2020-02-14
Filing date: 2020-02-14
Publication date: 2020-12-18
Anticipated expiration: 2030-02-14

Abstract

The utility model belongs to the technical field of the tire decorative pattern, a high mileage tire that traveles is disclosed. The high-mileage tire comprises a tread portion, wherein the tread portion is provided with a plurality of land portions divided by a plurality of main grooves continuously extending along the circumferential direction of the tire, the land portions are provided with a plurality of cross grooves and a plurality of main cutter grooves extending along the cross grooves in a wavy manner, each main cutter groove is provided with a plurality of wavy portions and spacing sections, the adjacent wavy portions are connected through the spacing sections, the amplitude of each wavy portion is 0.4-5mm, the half-wave length from the peak to the valley of each wavy portion is 3-5mm, the peak and the valley of each wavy portion are arc surfaces, and the curvature radius of each arc surface is 0.3-1.5 mm. The tire increases the lateral stability of the land tread and can further improve the control stability.

Description

High mileage tire

Technical Field

The utility model relates to a tire pattern, in particular to high mileage tire that traveles.

Background

Compared with the common car tire, the car tire with high driving mileage has higher driving mileage, stronger adaptability to different road conditions and climatic conditions and ageing resistance, and is a well-known car tire product with excellent comprehensive performance; the tire can be used all year round basically by eliminating extreme ice and snow conditions, and products with the specification and the model number from 13 to 20 inches can meet the use requirements of most car tire users, and are popular with common users.

At present, super-abrasion carbon black filling systems are added in tread formulas of most car tires with high driving mileage on the market, and butadiene and styrene butadiene rubber are used. Although the application of the formula elements increases the abrasion performance of the tread and improves the tear resistance of the product. But also presents the general problems of wet slip and handling. And the tire with high mileage generally has more fine grooves, so that the rigidity of the whole pattern is relatively small, and the braking and control performance is further influenced.

The high mileage tire base that traveles can be used to multiple road conditions, and the horizontal slot of decorative pattern presss from both sides the stone easily at the long-term in-process that traveles, and the reduction of groove creep deformation under traditional slot design is unfavorable for long-term high-speed traveling, influences user's directly perceived experience. In order to improve the pattern rigidity of the high-mileage tire without increasing performance waste caused by excessive increase, improve the wet land braking and control performance, prevent the patterns from clamping stones in the running process and not influence the advantages of high mileage and good comprehensive performance of the tire, the invention provides the high-mileage tire, and the simple 3D main cutter groove and the novel transverse groove are designed and applied to the high-mileage tire on the premise of not changing the tire tread formula.

SUMMERY OF THE UTILITY MODEL

In order to solve the high mileage tire that traveles among the prior art and easily press from both sides the stone, the high technical problem of groove wriggling deformation, the utility model provides a high mileage tire that traveles.

In order to solve the technical problem, the utility model discloses a following technical scheme:

the high-mileage tire comprises a tread portion, wherein the tread portion is provided with a plurality of land portions divided by a plurality of main grooves continuously extending along the circumferential direction of the tire, the land portions are provided with a plurality of cross grooves and a plurality of main cutter grooves extending along the cross grooves in a wavy manner, each main cutter groove is provided with a plurality of wavy portions and spacing sections, the adjacent wavy portions are connected through the spacing sections, the amplitude of each wavy portion is 0.4-5mm, the half-wave length from the peak to the valley of each wavy portion is 3-5mm, the peaks and the valleys of each wavy portion are arc surfaces, and the curvature radius of each arc surface is 0.3-1.5 mm.

The utility model provides a three-dimensional sword groove that main sword groove was seted up for the 3D steel sheet can give the bigger decorative pattern rigidity of tire under the prerequisite that does not promote the cost, and the violent deformation of suppression decorative pattern piece under high-speed driving state improves the stability of traveling. The main knife slot is provided with a wave breaking part and a spacing section between the wave parts, and the design of the discontinuous wave-shaped main knife slot increases the transverse stability of the land tread and can further improve the control stability. The design of a plurality of main cutter grooves not only ensures that the rigidity of the decorative pattern is relatively uniform, the inharmonious vibration is reduced, the driving comfort is improved, but also the traction and ground grabbing performance of dry and wet road surfaces is more facilitated, the braking performance is superior, and the driving safety performance is higher.

Preferably, the length of the interval between adjacent wave parts is 4-10 mm.

Preferably, the thickness of the main cutter groove is 0.3-1.2mm, the maximum thickness of the wavy part is 0.8-4mm, and the height of the wavy part is 1.5-5 mm.

Preferably, the interval end between the wave parts is provided with a raised reinforcing rib, the length of the reinforcing rib in the tire axial direction is 2-6mm, and the length of the top surface of the reinforcing rib and the length of the tread surface of the land part in the tire radial direction is 2-5 mm. The raised reinforcing ribs strengthen the rigidity of the land part, reduce the pulling deformation of the tread of the land part and ensure the stability of the tire in running;

the lug groove extends from a tread end of each land portion toward the tire axial direction inner side and is interrupted in the land portion.

The upper edge of the groove wall of the transverse groove is provided with a chamfer, the chamfer can be designed at one side or two sides of the transverse groove and is spread along the extending direction of the groove of the transverse groove, the height of the chamfer in the radial direction of the tire is 0.5-3mm, and the width of the chamfer is 0.5-2 mm; the included angle between the two groove walls of the cross groove and the normal line of the tire is different in size, and the included angle is 2-7 degrees. After a common tire with high driving mileage runs for a long time, the situation of mixed and clamped broken stones or foreign matters can occur in the cross grain grooves, abnormal damage of patterns can be caused when the tire runs under the state, three-dimensional corner cut designs are added to a plurality of cross grain grooves, the patterns can be effectively prevented from being clamped by the stones in the running process, and the continuation of the service life of the tire is facilitated.

Preferably, at least one main sipe is provided between adjacent lateral grooves in the tire circumferential direction.

Auxiliary cutter grooves are arranged between the adjacent main cutter grooves in the circumferential direction of the tire. The design of ordinary auxiliary cutter groove and three-dimensional main cutter groove not only improves the rigidity of decorative patterns and improves the braking and control performance, but also can not cause the waste of too high cost or excessive rigidity improvement. 1-2 common auxiliary cutter grooves can be arranged between the adjacent main cutter grooves, and the aim is to reasonably coordinate the matching of the rigidity of the decorative pattern.

Drawings

Fig. 1 is a development view of a tread portion of a tire with a high mileage;

FIG. 2 is an enlarged schematic view of the main blade slot of FIG. 1;

FIG. 3 is a cross-sectional view of the main blade pocket of FIG. 1 taken along line R-R;

FIG. 4 is a sectional view of the main blade groove of FIG. 1 taken along the line S-S in the longitudinal direction;

fig. 5 is a cross-sectional view of the transverse grooves along line C-C shown in fig. 1.

Detailed Description

The utility model discloses aim at providing high mileage tire that traveles to solve prior art high mileage tire that traveles and easily press from both sides the stone, the high technical problem of groove wriggling deformation.

In order to enable those skilled in the art to better understand the present invention, the following detailed description of the invention is provided in conjunction with the accompanying drawings.

As shown in fig. 1 and 2, the high mileage tire includes a tread portion 1 having a plurality of land portions divided by a plurality of main grooves continuously extending in a tire circumferential direction, the land portion being provided with a plurality of sipes 2 and a plurality of main sipes 3 extending in a wave shape along the sipes, the main sipes 3 having a plurality of wave portions 31 and spaced portions 32, adjacent ones of the wave portions being connected by the spaced portions, a length of the spaced portions between adjacent ones of the wave portions being 4 to 10mm, an amplitude L3 of the wave portions being 0.4 to 5mm, a half-wave length L2 between a peak and a valley of the wave portions being 3 to 5mm, the peaks and the valleys of the wave portions being arc surfaces, a radius Ra of curvature of the arc surfaces being 0.3 to 1.5 mm.

FIG. 3 is a cross-sectional view of the main blade groove shown in FIG. 1 taken along the line R-R, the main blade groove having a thickness H1 of 0.3-1.2mm, a maximum thickness H4 of the wave portion of 0.8-4mm, and a height H3 of the wave portion of 1.5-5 mm.

The interval end between the wave parts is provided with a raised reinforcing rib 33, the detailed view is shown in fig. 4, fig. 4 is a cross section of the main cutter groove shown in fig. 1 along the S-S line of the length direction, the length L4 of the reinforcing rib in the tire axial direction is 2-6mm, and the length H2 of the top surface of the reinforcing rib and the tire radial direction of the tread of the land part is 2-5 mm.

The lug groove 2 extends from the tread end T of each land portion toward the inner side in the tire axial direction and is interrupted in the land portion.

The groove wall of the cross groove 2 is provided with a chamfer 21, the chamfer 21 can be designed at one side or two sides of the cross groove and spread along the extending direction of the cross groove, as shown in fig. 5, the height H5 of the chamfer in the radial direction of the tire is 0.5-3mm, and the width N of the chamfer is 0.5-2 mm; the included angles A and B between the two groove walls of the cross groove and the normal P of the tire are different in size, the included angle A is 2-7 degrees, and the included angle B is 2-7 degrees.

At least one main cutter groove 3 is arranged between every two adjacent transverse grooves 2 in the circumferential direction of the tire; the distance between adjacent transverse grooves in the circumferential direction of the tire is W, and when W is less than 20mm, a main cutter groove can be arranged; when W is 20-30, one or two main cutter grooves can be arranged; when W >30, two or three main sipes may be provided. Except for the main cutter groove, common auxiliary cutter grooves are arranged between the adjacent main cutter grooves in the circumferential direction of the tire, and 1-2 auxiliary cutter grooves are arranged in any range of W, so that the purpose of reasonably coordinating the matching of the rigidity of the patterns is achieved.

The above is to the high mileage tire provided by the present invention, the detailed description is made. The principles and embodiments of the present invention have been explained herein using specific examples, which are presented only to assist in understanding the methods and concepts of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be subject to several improvements and modifications, which also fall within the scope of the claims of the present invention.

Claims

1. A high mileage tire comprising a tread portion having a plurality of land portions divided by a plurality of main grooves continuously extending in a tire circumferential direction, characterized in that: the land portion is provided with a plurality of cross grooves and a plurality of main cutter grooves extending along the cross grooves in a wavy manner, each main cutter groove is provided with a plurality of wave portions and spacing sections, the adjacent wave portions are connected through the spacing sections, the amplitude of each wave portion is 0.4-5mm, the half wavelength from the peak to the valley of each wave portion is 3-5mm, the peak and the valley of each wave portion are arc surfaces, and the curvature radius of each arc surface is 0.3-1.5 mm.

2. The high mileage tire as set forth in claim 1, wherein: the length of the interval between the adjacent wave parts is 4-10 mm.

3. The high mileage tire as set forth in claim 1, wherein: the thickness of the main cutter groove is 0.3-1.2mm, the maximum thickness of the wavy part is 0.8-4mm, and the height of the wavy part is 1.5-5 mm.

4. The high mileage tire as set forth in claim 1, wherein: the interval end between the wave portion is equipped with the reinforcement muscle that rises, the axial length of tire of reinforcement muscle is 2-6mm, the top surface of reinforcement muscle with the radial length of tire of the tread of land portion is 2-5 mm.

5. The high mileage tire as set forth in claim 1, wherein: the lug groove extends from a tread end of each land portion toward the tire axial direction inner side and is interrupted in the land portion.

6. The high mileage tire of claim 5 wherein: the upper edge of the groove wall of the transverse groove is provided with a chamfer, the height of the chamfer in the radial direction of the tire is 0.5-3mm, and the width of the chamfer is 0.5-2 mm; the included angle between the transverse groove wall and the normal line of the tire is 2-7 degrees.

7. The high mileage tire as set forth in claim 1, wherein: at least one main cutter groove is arranged between the adjacent cross grooves in the circumferential direction of the tire.

8. The high mileage tire as set forth in claim 1, wherein: auxiliary cutter grooves are arranged between the adjacent main cutter grooves in the circumferential direction of the tire.