CN113829805B - Pneumatic tire for all-terrain vehicle - Google Patents

Abstract

The invention provides a pneumatic tire for an all-terrain vehicle, wherein the tread comprises a plurality of central pattern block groups and shoulder pattern block groups, wherein the central pattern block groups and the shoulder pattern block groups are formed by dividing a central inclined auxiliary groove, a T-shaped auxiliary groove and shoulder inclined auxiliary grooves which are positioned at the central circumference of the tread and extend in a V-shaped central groove and at two sides, pattern blocks of the central pattern block groups and pattern blocks of the shoulder pattern block groups are respectively arranged at 180 degrees along the central circumference of the tire, the central pattern block groups comprise central pattern blocks and transition pattern blocks, the connecting lines of the two ends of the inner edge of the central pattern blocks in the axial direction, the connecting lines of the two ends of the outer edge of the transition pattern blocks in the axial direction and the clockwise included angle and the anticlockwise included angle of the tire circumference are respectively arranged as an acute angle, the central pattern blocks are provided with straight fine grooves and fine folding grooves which are respectively arranged at the two ends, and the transition pattern blocks are respectively arranged on the central pattern blocks. The tire provided by the invention can ensure the durability of the tire and improve the traction performance of the tire under off-road pavement.

Description

Pneumatic tire for all-terrain vehicle

Technical Field

The invention relates to the technical field of pneumatic tires, and in particular to a pneumatic tire for an all-terrain vehicle.

Background technique

In recent years, with the excellent performance of all-terrain vehicles on various terrains, the proportion of all-terrain vehicles in various terrain off-road events at home and abroad has gradually increased, and they are widely favored by enthusiasts. There are various harsh terrains such as Gobi, sand and gravel in off-road events, which are prone to problems such as insufficient traction or damage of tires. Therefore, all-terrain vehicles need to have excellent traction and durability when driving on off-road terrain to ensure that the vehicle can achieve better results in the event.

The contact surface of the tread blocks of existing all-terrain vehicle tires is generally provided with closed pattern grooves to make the tread blocks have better rigidity, thereby improving the durability of the tire. However, when the tire with such tread pattern is driven on off-road terrain, the marginal effect is limited and it cannot fully meet the traction requirements of the tire on off-road terrain; there are also tires with tread blocks arranged in a central circumferential direction. Such tires have better durability on off-road terrain, but poor traction performance. Existing all-terrain vehicle tires are difficult to meet the traction and durability requirements of vehicles when driving on off-road terrain.

Therefore, the purpose of the present invention is to develop a pneumatic tire for an all-terrain vehicle that can ensure tire durability and improve the traction performance of the tire on off-road roads.

Summary of the invention

In view of the above-mentioned deficiencies in the prior art, the problem to be solved by the present invention is to provide an inflatable tire for an all-terrain vehicle that can ensure the durability of the tire and improve the traction performance of the tire on off-road surfaces.

The technical solution of the present invention is:

A pneumatic tire for an all-terrain vehicle comprises a tire body, wherein the tire body comprises a tread, wherein the tread comprises a plurality of center pattern block groups evenly distributed along the tire circumference and shoulder pattern block groups located on both sides of the center pattern block group in the axial direction.

Each central pattern block group comprises two main pattern block groups arranged at 180° to each other along the center of the tire tread, each main pattern block group comprises a central pattern block and a transition pattern block, the central pattern block is located at the center of the tire tread, the transition pattern block is located at the axial outer side of the central pattern block, the center of the central pattern block and the center of the transition pattern block are staggered with each other along the circumferential direction of the tire, so that a V-shaped central main groove and a central inclined secondary groove extending along the circumferential direction of the tire at the center of the tire tread are formed between each adjacent pattern block of the central pattern block group; the clockwise angle between the two ends of the axial inner edge of the central pattern block and the circumferential direction of the tire is set to an acute angle, the counterclockwise angle between the two ends of the axial outer edge of the transition pattern block and the circumferential direction of the tire is set to an acute angle, and the axial inner edge of the transition pattern block is parallel to the axial outer edge of the central pattern block;

The central pattern block is provided with a first fine groove, which is composed of a straight fine groove and a folded fine groove alternately arranged along the tire circumferential direction, the counterclockwise angle between the straight fine groove and the tire circumferential direction is set to an acute angle, and the counterclockwise angle between the folded fine groove and the tire circumferential direction is set to an acute angle;

The transition pattern block is provided with a second fine groove, which is composed of a middle fine groove and two end fine grooves alternately arranged along the tire circumference, the clockwise angle between the middle fine groove and the tire circumference is set to an acute angle, and the clockwise angle between the two end fine grooves and the tire circumference is set to an acute angle;

The shoulder pattern block group is arranged on both sides of the tread at 180 degrees to each other along the center of the tire tread, and the shoulder pattern block group includes a first shoulder pattern block and a second shoulder pattern block arranged at intervals along the circumferential direction of the tire, the head of the first shoulder pattern block is arranged between circumferentially adjacent transition pattern blocks, and the axial outer end of the first shoulder pattern block extends to the tread edge, and T-type auxiliary grooves and shoulder inclined auxiliary grooves are formed between each transition pattern block, the first shoulder pattern block and the second shoulder pattern block.

Furthermore, the first fine grooves penetrate the axial side edges of the central pattern block and divide the central pattern block into a plurality of sub-blocks.

Furthermore, the middle fold groove passes through the two axial edges of the transition pattern block, and one end of the two end fold grooves is arranged inside the transition pattern block, and the other end passes through one axial edge of the transition pattern block.

Furthermore, the ratio of any two distances from the axial edge of the center pattern block to the adjacent first groove and the distances between each adjacent first groove is set to 0.8-1.2, and the ratio of any two distances from the axial edge of the transition pattern block to the adjacent second groove and the distances between each adjacent second groove is set to 0.7-1.3.

Furthermore, the first shoulder pattern block is provided with at least one first shoulder fold groove, at least one second shoulder fold groove and a plurality of first grooves.

Furthermore, both ends of the first groove and both ends of the first shoulder fold groove respectively penetrate the circumferential side edges of the first shoulder pattern block, one end of the second shoulder fold groove penetrates the adjacent first groove, and the other end penetrates the circumferential front edge of the first shoulder pattern block, and the first shoulder pattern block is divided into a plurality of first side pattern sub-blocks by the first groove.

Furthermore, a plurality of second grooves are provided on the second shoulder pattern block, both ends of the second grooves pass through the circumferential side edges of the second shoulder pattern block, and the second shoulder pattern block is divided into a plurality of second edge pattern sub-blocks by the second grooves.

Further, the axial inner edge of the central pattern block is set to be a single arc or a straight line, and the axial outer edge of the central pattern block is set to be a multi-edge sawtooth shape;

The axial inner edge of the transition pattern block is configured as a multi-edge sawtooth shape, and the axial outer edge of the transition pattern block is configured as a single arc shape or a straight line shape.

Furthermore, the second shoulder pattern block is also provided with a secondary shoulder fold groove.

Furthermore, the shoulder pattern block group also includes a U-shaped bottom pattern block, which is arranged axially outside the second shoulder pattern block and surrounded by the axial outside of the second shoulder pattern block, and the bottom pattern block is composed of a plurality of concave-convex spacing grooves arranged along the circumference of the tire.

The beneficial effects of the present invention are:

Through the optimized design of the tread pattern of the pneumatic tire for all-terrain vehicles, the tread includes a plurality of center pattern block groups and shoulder pattern block groups divided by a V-shaped center main groove extending circumferentially at the center of the tread and center inclined secondary grooves, T-shaped secondary grooves, and shoulder inclined secondary grooves on both sides, wherein the center pattern block group includes two main pattern block groups arranged 180° apart from each other along the center of the tire tread, each main pattern block group includes a center pattern block and a transition pattern block, the clockwise angle between the two ends of the connecting line of the axial inner edge of the center pattern block and the circumferential direction of the tire is set to an acute angle, the counterclockwise angle between the two ends of the connecting line of the axial outer edge of the transition pattern block and the circumferential direction of the tire is set to an acute angle, the center pattern block is provided with straight fine grooves and folded fine grooves with an acute angle with the counterclockwise angle of the circumferential direction of the tire, and the transition pattern block is provided with a middle folded fine groove and two end folded fine grooves with an acute angle with the clockwise angle of the circumferential direction of the tire, thereby ensuring the durability of the tire while improving the traction performance of the tire on off-road roads.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram of a tread pattern structure according to an embodiment of the present invention.

FIG. 2 is a schematic structural diagram of a central pattern block group in an embodiment of the present invention.

FIG. 3 is a schematic structural diagram of a shoulder pattern block group in an embodiment of the present invention.

FIG4 is a cross-sectional view taken along the line A-A’ in FIG3 .

Detailed ways

In order to describe the present invention more clearly, the orientation of the tire is first defined: C.L. represents the center plane of the tire; C.L. close to the center plane of the tire represents the inner side, and C.L. far from the center plane of the tire represents the outer side; the horizontal direction in Figures 1 to 3 below is the transverse direction, corresponding to the axial direction of the tire, the vertical direction is the longitudinal direction, corresponding to the circumferential direction of the tire, and the vertical upward direction is the rolling direction of the tire. Along the rolling direction of the tire, the end that touches the ground first is defined as the first ground contact end, and the end that touches the ground later is defined as the later ground contact end.

Fig. 1 is a schematic diagram of a tread pattern structure of an embodiment of the present invention. An all-terrain vehicle pneumatic tire comprises a tire body, which comprises a tread 1. The tread 1 comprises a plurality of center pattern block groups 10 evenly distributed along the tire circumference and shoulder pattern block groups 20 located on both sides of the center pattern block group 10 in the axial direction.

As shown in Fig. 1 to Fig. 4, each center pattern block group 10 includes two main pattern block groups 100 arranged 180° apart from each other along the center of the tire tread, and each main pattern block group 100 includes a center pattern block 21 and a transition pattern block 22. The center pattern block 21 is located at the center of the tire tread, and the transition pattern block 22 is located axially outside the center pattern block 21. The center of the center pattern block 21 and the center of the transition pattern block 22 are staggered from each other along the tire circumference, so that a V-shaped center main groove 11 and a center inclined secondary groove 12 extending along the tire circumference are formed between each adjacent pattern block of the center pattern block group 10. Such a design can ensure the rigidity of the center pattern block group 10 and ensure that the tire has good durability.

The clockwise angle α between the two ends of the connecting line of the axial inner edge 21a of the center pattern block 21 and the tire circumference is set to an acute angle, and the counterclockwise angle β between the two ends of the connecting line of the axial outer edge 22b of the transition pattern block 22 and the tire circumference is set to an acute angle, and the center pattern block 21 and the transition pattern block 22 form different extension directions. The axial inner edge 22a of the transition pattern block 22 is parallel to the axial outer edge 21b of the center pattern block 21. With such a design, when the tire is running, the center pattern block group 10 can provide traction in multiple directions, thereby improving the traction performance of the tire.

The center pattern block 21 is provided with a first fine groove 21c, which runs through the axial edges of the center pattern block 21 on both sides, and is composed of straight fine grooves 21d and folded fine grooves 21e arranged alternately along the tire circumference. The counterclockwise angle γ1 between the straight fine groove 21d and the tire circumference is set to an acute angle, and the counterclockwise angle γ2 between the folded fine groove 21e and the tire circumference is set to an acute angle. The first fine groove 21c and the center pattern block 21 form different extension directions. The center pattern block 21 is divided into a plurality of sub-blocks by the straight fine grooves 21d and the folded fine grooves 21e. In this embodiment, the first fine groove 21c is composed of one straight fine groove 21d and two folded fine grooves 21e. The center pattern block 21 is divided into four sub-blocks 211 by the straight fine grooves 21d and the folded fine grooves 21e. With such a design, when the tire is running, the center pattern block 21 can provide traction in multiple directions, thereby improving the traction performance of the tire.

The transition pattern block 22 is provided with a second fine groove 22c, which is composed of a middle fine groove 22f and two end fine grooves 22e arranged alternately along the tire circumferential direction. The middle fine groove 22f runs through the axial edges of the transition pattern block 22. One end of the two end fine grooves 22e is arranged inside the transition pattern block 22, and the other end runs through one axial edge of the transition pattern block 22. The clockwise angle δ1 between the middle fine groove 22f and the tire circumferential direction is set to an acute angle, and the clockwise angle δ2 between the two end fine grooves 22e and the tire circumferential direction is set to an acute angle, and the middle fine groove 22f and the two end fine grooves 22e form different extension directions with the transition pattern block 22 respectively. In this embodiment, the transition pattern block 22 is composed of a middle folded groove 22f and two end folded grooves 22e, wherein one end of one end folded groove 22e is arranged inside the transition pattern block 22, and the other end passes through the axial inner edge 22a of the transition pattern block 22; the other end folded groove 22e is arranged inside the transition pattern block 22, and the other end passes through the axial outer edge 22b of the transition pattern block 22. With such a design, when the tire is running, the transition pattern block 22 can provide traction in multiple directions, thereby improving the traction performance of the tire.

In order to further improve the durability of the tire, the ratio of any two distances from the axial edge of the center pattern block 21 to the adjacent first fine groove 21c and the distance between each adjacent first fine groove 21c is set to 0.8-1.2, and the ratio of any two distances from the axial edge of the transition pattern block 22 to the adjacent second fine groove 22c and the distance between each adjacent second fine groove 22c is set to 0.7-1.3. In this embodiment, the ratio of the distance from the axial edge of the center pattern block 21 to the adjacent first fine groove 21c and the distance between the adjacent first fine groove 21c is set to 0.9, that is, the ratio of any two distances in the distances A1, A2, A3, and A4 on each sub-block 211 is set to 0.9; the ratio of the distance from the axial edge of the transition pattern block 22 to the adjacent second fine groove 22c and the distance between each adjacent second fine groove 22c is set to 0.9, that is, the ratio of any two distances in the distances B1, B2, B3, and B4 on the transition pattern block 22 is set to 0.9. Such a design can avoid excessive differences in the distances from the axial edge of the center pattern block 21 to the adjacent first fine grooves 21c and the distances between each adjacent first fine grooves 21c, and the distances from the axial edge of the transition pattern block 22 to the adjacent second fine grooves 22c and the distances between each adjacent second fine grooves 22c, thereby balancing the rigidity of each sub-block 211 and the transition pattern block 22 and ensuring that the tire has good durability.

As shown in FIG3 , the shoulder pattern block group 20 is arranged at 180° to each other on both sides of the tread 1 along the center of the tire tread, and includes a first shoulder pattern block 23 and a second shoulder pattern block 24 arranged at intervals along the circumferential direction of the tire. The head of the first shoulder pattern block 23 is arranged between the circumferentially adjacent transition pattern blocks 22, and its axial outer end extends to the edge of the tread 1. T-shaped auxiliary grooves 13 and shoulder inclined auxiliary grooves 14 are formed between each transition pattern block 22, the first shoulder pattern block 23 and the second shoulder pattern block 24.

In order to further improve the traction performance on off-road terrain, the first shoulder tread block 23 may also be provided with at least one first shoulder folded groove 23a, a plurality of first grooves 23b and at least one second shoulder folded groove 23c. The two ends of the first groove 23b and the two ends of the first shoulder folded groove 23a respectively penetrate the circumferential side edges of the first shoulder tread block 23, and one end of the second shoulder folded groove 23c penetrates the adjacent first groove 23b, and the other end penetrates the circumferential front side edge 23d of the first shoulder tread block 23. As shown in FIG. 3, in this embodiment, the first shoulder tread block 23 is provided with two first shoulder folded grooves 23a, two first grooves 23b and one second shoulder folded groove 23c. With such a design, when the tire is running, the ground contact edge of the first shoulder tread block 23 can be increased, effectively improving the traction performance of the tire. The axial outer end of the first shoulder pattern block 23 extends to the edge of the tread 1, and the first shoulder pattern block 23 is divided into a plurality of first edge pattern sub-blocks by the first groove 23b. In this embodiment, the first groove 23b divides the first shoulder pattern block 23 into three first edge pattern sub-blocks 231, 232, and 233. Such a design can further improve the traction performance of the tire on off-road terrain.

The second shoulder pattern block 24 is provided with a plurality of second grooves 24a, and the two ends of the second grooves 24a penetrate the circumferential edges of the second shoulder pattern block 24. The second shoulder pattern block 24 may or may not be provided with a secondary shoulder folding groove. If a secondary shoulder folding groove is provided, the arrangement of the first shoulder folding groove 23a and the second shoulder folding groove 23c on the first shoulder pattern block 23 may be referred to. In this embodiment, the second shoulder pattern block 24 is not provided with a secondary shoulder folding groove, and the second shoulder pattern block 24 is divided into three second side pattern sub-blocks 241, 242, and 243 by the second grooves 24a. Such a design can further improve the traction performance of the tire on off-road terrain.

The axial inner edge 21a of the center pattern block 21 and the axial outer edge 22b of the transition pattern block 22 can also be set to a single arc or a straight line, so as to strengthen the rigidity of the pattern block edge of the tire. In this embodiment, the axial inner edge 21a of the center pattern block 21 and the axial outer edge 22b of the transition pattern block 22 are set to a single arc. The axial outer edge 21b of the center pattern block 21 and the axial inner edge 22a of the transition pattern block 22 can be set to a multi-edge serrated shape, so as to increase the tire ground contact edge when the tire is running on off-road terrain, effectively improving the traction performance of the tire.

The shoulder pattern block group 20 on the tread 1 may also include a U-shaped bottom pattern block 25, which is arranged axially outside the second shoulder pattern block 24 and surrounds the axial outside of the second shoulder pattern block 24. As shown in FIG4, the bottom pattern block 25 is composed of a plurality of concave-convex spacing grooves 25a arranged along the circumference of the tire. Such a design can further improve the traction performance of the tire on off-road terrain.

The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims (10)

1. A pneumatic tire for an all-terrain vehicle, comprising a tire body, the tire body comprising a tread, the tread comprising a plurality of center pattern block groups evenly distributed along the tire circumference and shoulder pattern block groups located on both sides of the center pattern block group in the axial direction, characterized in that: Each central pattern block group comprises two main pattern block groups arranged at 180° to each other along the center of the tire tread, each main pattern block group comprises a central pattern block and a transition pattern block, the central pattern block is located at the center of the tire tread, the transition pattern block is located at the axial outer side of the central pattern block, the center of the central pattern block and the center of the transition pattern block are staggered with each other along the circumferential direction of the tire, so that a V-shaped central main groove and a central inclined secondary groove extending along the circumferential direction of the tire at the center of the tire tread are formed between each adjacent pattern block of the central pattern block group; the clockwise angle between the two ends of the axial inner edge of the central pattern block and the circumferential direction of the tire is set to an acute angle, the counterclockwise angle between the two ends of the axial outer edge of the transition pattern block and the circumferential direction of the tire is set to an acute angle, and the axial inner edge of the transition pattern block is parallel to the axial outer edge of the central pattern block; The central pattern block is provided with a first fine groove, which is composed of a straight fine groove and a folded fine groove alternately arranged along the tire circumferential direction, the counterclockwise angle between the straight fine groove and the tire circumferential direction is set to an acute angle, and the counterclockwise angle between the folded fine groove and the tire circumferential direction is set to an acute angle; The transition pattern block is provided with a second fine groove, which is composed of a middle fine groove and two end fine grooves alternately arranged along the tire circumference, the clockwise angle between the middle fine groove and the tire circumference is set to an acute angle, and the clockwise angle between the two end fine grooves and the tire circumference is set to an acute angle; The shoulder pattern block group is arranged on both sides of the tread at 180 degrees to each other along the center of the tire tread, and the shoulder pattern block group includes a first shoulder pattern block and a second shoulder pattern block arranged at intervals along the circumferential direction of the tire, the head of the first shoulder pattern block is arranged between circumferentially adjacent transition pattern blocks, and the axial outer end of the first shoulder pattern block extends to the tread edge, and T-type auxiliary grooves and shoulder inclined auxiliary grooves are formed between each transition pattern block, the first shoulder pattern block and the second shoulder pattern block. 2. An all-terrain vehicle pneumatic tire according to claim 1, characterized in that the first fine groove runs through the axial side edges of the central pattern block and divides the central pattern block into a plurality of sub-blocks. 3. An inflatable tire for an all-terrain vehicle according to claim 1, characterized in that the middle fold groove passes through the axial edges of the transition pattern block on both sides, and one end of the fold groove at both ends is arranged inside the transition pattern block, and the other end passes through the axial edge of one side of the transition pattern block. 4. An inflatable tire for an all-terrain vehicle according to claim 1, characterized in that the ratio of any two distances from the axial edge of the center pattern block to the adjacent first fine groove and the distances between each adjacent first fine groove is set to 0.8-1.2, and the ratio of any two distances from the axial edge of the transition pattern block to the adjacent second fine groove and the distances between each adjacent second fine groove is set to 0.7-1.3. 5. A pneumatic tire for an all-terrain vehicle according to claim 1, characterized in that the first shoulder tread block is provided with at least one first shoulder fold groove, at least one second shoulder fold groove and a plurality of first grooves. 6. An inflatable tire for an all-terrain vehicle according to claim 5, characterized in that the two ends of the first groove and the two ends of the first shoulder fold groove respectively penetrate the circumferential side edges of the first shoulder pattern block, one end of the second shoulder fold groove penetrates the adjacent first groove, and the other end penetrates the circumferential front edge of the first shoulder pattern block, and the first shoulder pattern block is divided into a plurality of first side pattern sub-blocks by the first groove. 7. An inflatable tire for an all-terrain vehicle according to claim 1, characterized in that a plurality of second grooves are provided on the second shoulder pattern block, the two ends of the second grooves pass through the circumferential side edges of the second shoulder pattern block, and the second shoulder pattern block is divided into a plurality of second edge pattern sub-blocks by the second grooves. 8. A pneumatic tire for an all-terrain vehicle according to claim 1, characterized in that the axial inner edge of the central pattern block is set to be a single arc or a straight line, and the axial outer edge of the central pattern block is set to be a multi-edge serrated shape; The axial inner edge of the transition pattern block is configured as a multi-edge sawtooth shape, and the axial outer edge of the transition pattern block is configured as a single arc shape or a straight line shape. 9. A pneumatic tire for an all-terrain vehicle according to claim 7, characterized in that the second shoulder tread block is also provided with a secondary shoulder fold groove. 10. An inflatable tire for an all-terrain vehicle according to claim 5 or 9, characterized in that the shoulder pattern block group also includes a U-shaped bottom pattern block, the bottom pattern block is arranged on the axial outside of the second shoulder pattern block and surrounded by the axial outside of the second shoulder pattern block, and the bottom pattern block is composed of a plurality of concave-convex spacing grooves arranged along the circumference of the tire.