CN113276601A

CN113276601A - Snow tire

Info

Publication number: CN113276601A
Application number: CN202110717340.6A
Authority: CN
Inventors: 王�锋; 滕雷; 陈雪梅; 朱丽艳; 杨宝忠; 李健军; 刘晓棠
Original assignee: Shandong Linglong Tyre Co Ltd
Current assignee: Shandong Linglong Tyre Co Ltd
Priority date: 2021-06-28
Filing date: 2021-06-28
Publication date: 2021-08-20

Abstract

The invention discloses a snow tire, which comprises a tire body, a tire crown reinforcing part, two tire sidewalls and two tire beads, wherein the two tire beads are used for being in contact with a mounting rim; the tire crown part comprises a plurality of longitudinal pattern grooves which are arranged in a coherent manner, a plurality of transverse pattern grooves which are arranged in a non-coherent manner and are in a straight shape, and a plurality of middle grooves which are in a herringbone shape on the left and the right, and the longitudinal pattern grooves and the transverse pattern grooves divide the tire crown part into a plurality of side pattern blocks; the tread pattern structure provided by the invention can improve the integral rigidity of the tire pattern block, simultaneously keeps the traction performance of the tire on snow and ice, and can improve the rigidity of the pattern block, reduce the swing of the pattern block and reduce the abrasion of the tire during use by the alternate arrangement of the radial deep sipes and the radial shallow sipes and the arrangement of the pattern reinforcing ribs.

Description

Snow tire

Technical Field

The invention relates to the technical field of tires, in particular to a snow tire.

Background

The snow tire means a tire superior in braking performance and handling performance on snowy or icy road in winter compared to a general tire. The conventional snow tire is generally based on the shape of a block tread pattern, and the rigidity of the block is reduced by adopting a plurality of notches, so that the traction force of the tire on a snow or ice road surface is improved. The presence of these incisions is one of the most prominent features of snow tires that are clearly distinguished from traditional summer tires.

Although the incisions of the snow tire can effectively improve the traction force of the tire on the ice and snow, correspondingly, the rigidity of the pattern blocks is reduced due to the plurality of incisions, so that the sub blocks formed by the incisions in the running process of the vehicle swing more, and the tire is subjected to more abnormal wear.

In view of the above problems, a snow tire is proposed which improves the overall rigidity of the tire and maintains the performance of the tire on ice and snow.

Disclosure of Invention

An object of the present invention is to provide a snow tire that solves the problems set forth in the background art described above.

In order to achieve the purpose, the invention provides the following technical scheme:

a snow tire comprising a carcass, a crown reinforcement, two sidewalls and two beads for contact with a mounting rim, the crown reinforcement being provided on the outside with a crown portion;

the tire crown part comprises a plurality of longitudinal pattern grooves which are arranged in a coherent mode, a plurality of transverse pattern grooves which are arranged in a non-coherent mode and are in a straight shape, and a plurality of middle grooves which are in a herringbone shape on the left and the right, and the longitudinal pattern grooves and the transverse pattern grooves divide the tire crown part into a plurality of side pattern blocks;

the longitudinal pattern grooves and the middle grooves divide the tire crown into a plurality of middle pattern blocks, and pattern reinforcing ribs are arranged between the adjacent middle pattern blocks and between the adjacent side pattern blocks;

the side pattern blocks and the middle pattern blocks are provided with a plurality of narrow knife grooves on the surfaces, the narrow knife grooves comprise a plurality of radial shallow knife grooves and radial deep knife grooves, and the radial shallow knife grooves and the radial deep knife grooves are alternately arranged.

Preferably, the distance L3 between two adjacent radial shallow grooves or two adjacent radial deep grooves is 4-7 mm.

Preferably, the distance between each radial deep sipe and its adjacent two radial shallow sipes is equal or the distance between each radial shallow sipe and its adjacent two radial deep sipes is equal.

Preferably, the ratio of the length L1 of the rib to the length L2 of the lug groove disposed between the side blocks is in the range of 0.2 to 0.7.

Preferably, the ratio of the length L1 of the rib disposed between the middle blocks to the length of the middle groove ranges from 0.2 to 0.7.

Preferably, the ratio of the depth D1 of the rib in the tire radial direction to the depth D2 of the lug groove in the tire radial direction is in the range of 0.4 to 0.7.

Preferably, the depth D3 of the radial shallow sipes in the tire radial direction is 0.1mm to 2mm, and the ratio of the depth D4 of the radial deep sipes in the tire radial direction to the depth D2 of the lug grooves in the tire radial direction is in the range of 0.3 to 0.8.

Preferably, said crown portion is circumferentially surmounted in the direction of extension of the axial width of the crown reinforcement.

Preferably, two of said sidewalls extend radially outwards from the bead to the rib.

Compared with the prior art, the invention has the beneficial effects that:

the tread pattern structure provided by the invention can improve the integral rigidity of the tire pattern block, simultaneously keeps the traction performance of the tire on snow and ice, and can improve the rigidity of the pattern block, reduce the swing of the pattern block and reduce the abrasion of the tire during use by the alternate arrangement of the radial deep sipes and the radial shallow sipes and the arrangement of the pattern reinforcing ribs.

Drawings

Fig. 1 is a schematic structural view of a snow tire.

Fig. 2 is a schematic view of a partially developed structure of a crown portion in a snow tire.

FIG. 3 is a schematic view of the configuration of a narrow sipe and rib in a snow tire.

Fig. 4 is a schematic structural diagram of a depth D1 and a depth D2 in a snowy tire.

FIG. 5 is a partial schematic view of a side block in a snow tire.

In the figure: 1-crown part, 11-longitudinal pattern groove, 12-middle groove, 13-transverse pattern groove, 14-middle pattern block, 2-narrow sipe, 21-radial deep sipe, 22-radial shallow sipe and 3-pattern reinforcing rib.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 5, in an embodiment of the invention, a snow tire comprises a carcass, a crown reinforcement, two sidewalls and two beads for contact with a mounting rim, the beads being in contact with the mounting rim and capable of fixing the tire to the rim, the crown reinforcement being provided on the outside with a crown portion 1;

the tire crown part 1 comprises a plurality of longitudinal pattern grooves 11 which are arranged in a coherent mode, a plurality of transverse pattern grooves 13 which are arranged in a non-coherent mode and are in a straight shape, and a plurality of middle grooves 12 which are in a herringbone shape on the left and the right, and the longitudinal pattern grooves 11 and the transverse pattern grooves 13 divide the tire crown part 1 into a plurality of side pattern blocks;

the longitudinal pattern grooves 11 and the middle grooves 12 divide the tire crown part 1 into a plurality of middle pattern blocks 14, and the pattern reinforcing ribs 3 are arranged between the adjacent middle pattern blocks 14 and between the adjacent side pattern blocks;

the surfaces of the side pattern blocks and the middle pattern blocks 14 are provided with a plurality of narrow knife grooves 2, the narrow knife grooves 2 comprise a plurality of radial shallow knife grooves 22 and radial deep knife grooves 21, and the radial shallow knife grooves 22 and the radial deep knife grooves 21 are alternately arranged.

The distance L3 between two adjacent radial shallow grooves 22 or two adjacent radial deep grooves 21 is 4-7 mm.

The distance between each radial deep groove 21 and its adjacent two radial shallow grooves 22 is equal or the distance between each radial shallow groove 22 and its adjacent two radial deep grooves 21 is equal;

the radial shallow sipes 22 and the radial deep sipes 21 which are alternately arranged can enhance the ground gripping performance of the tire, reduce the swing of the upper sub blocks of the pattern blocks and reduce the abrasion of the tire during use.

The ratio of the length L1 of the rib 3 disposed between the side blocks to the length L2 of the lug groove 13 ranges from 0.2 to 0.7; the ratio of the length L1 of the rib 3 disposed between the blocks 14 to the length of the center groove 12 ranges from 0.2 to 0.7;

the ratio of the depth D1 of the rib 3 in the tire radial direction to the depth D2 of the lug groove 13 in the tire radial direction is in the range of 0.4 to 0.7;

the pattern reinforcing ribs 3 are arranged in the grooves between the pattern blocks, but the length of each pattern reinforcing rib is smaller than the groove where the pattern reinforcing rib 3 is located, so that the rigidity of the pattern blocks is increased, the grounding performance of the pattern blocks is not affected, the pattern blocks can generate large tangential elastic deformation under the action of tangential force between the tread and the road surface, and the traction performance of the tire is improved.

The depth D3 of the radial shallow sipes 22 in the tire radial direction is 0.1mm to 2mm, and the ratio of the depth D4 of the radial deep sipes 21 in the tire radial direction to the depth D2 of the lug grooves 13 in the tire radial direction is in the range of 0.3 to 0.8.

The crown portion 1 is circumferentially overlaid in the direction of axial width extension of the crown reinforcement, the two sidewalls extending radially outwards from the beads to the ribs 3.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof.

Claims

1. A snow tyre comprising a carcass, a crown reinforcement, two sidewalls and two beads for contact with a mounting rim, characterized in that: a tire crown part (1) is arranged on the outer side of the tire crown reinforcement;

the tire crown part (1) comprises a plurality of longitudinal pattern grooves (11) which are arranged in a coherent mode, a plurality of transverse pattern grooves (13) which are arranged in a non-coherent mode and are in a straight shape, and a plurality of middle grooves (12) which are in a herringbone shape on the left and the right, and the longitudinal pattern grooves (11) and the transverse pattern grooves (13) divide the tire crown part (1) into a plurality of side pattern blocks;

the longitudinal pattern grooves (11) and the middle grooves (12) divide the tire crown part (1) into a plurality of middle pattern blocks (14), and pattern reinforcing ribs (3) are arranged between every two adjacent middle pattern blocks (14) and between every two adjacent side pattern blocks;

the side pattern blocks and the middle pattern blocks (14) are provided with a plurality of narrow grooves (2) on the surfaces, the narrow grooves (2) comprise a plurality of radial shallow grooves (22) and radial deep grooves (21), and the radial shallow grooves (22) and the radial deep grooves (21) are alternately arranged.

2. A snow tyre according to claim 1, characterized in that: the distance L3 between two adjacent radial shallow grooves (22) or two adjacent radial deep grooves (21) is 4-7 mm.

3. A snow tyre according to claim 1, characterized in that: the distance between each radial deep cutting groove (21) and two adjacent radial shallow cutting grooves (22) is equal or the distance between each radial shallow cutting groove (22) and two adjacent radial deep cutting grooves (21) is equal.

4. A snow tyre according to claim 1, characterized in that: the ratio of the length L1 of the rib (3) disposed between the side blocks to the length L2 of the lug groove (13) ranges from 0.2 to 0.7.

5. A snow tyre according to claim 1, characterized in that: the ratio of the length L1 of the rib (3) disposed between the blocks (14) to the length of the center groove (12) is in the range of 0.2-0.7.

6. A snow tyre according to claim 1, characterized in that: the ratio of the depth D1 of the rib (3) in the radial direction of the tire to the depth D2 of the lug groove (13) in the radial direction of the tire is in the range of 0.4 to 0.7.

7. A snow tyre according to claim 1, characterized in that: the depth D3 of the radial shallow grooves (22) in the radial direction of the tire is 0.1mm-2mm, and the ratio of the depth D4 of the radial deep grooves (21) in the radial direction of the tire to the depth D2 of the lug grooves (13) in the radial direction of the tire is 0.3-0.8.

8. A snow tyre according to claim 1, characterized in that: the crown portion (1) is circumferentially surmounted in the direction of axial width extension of the crown reinforcement.

9. A snow tyre according to claim 1, characterized in that: two of said sidewalls extend radially outwards from the bead to the rib (3).