Tire

Abstract

The utility model relates to the field of tires, in particular to a tire. The utility model discloses a tire which is characterized in that a first longitudinal groove, a second longitudinal groove, a third longitudinal groove and a fourth longitudinal groove which are arranged at intervals are formed in the circumferential surface along the direction from inside to outside so as to divide the circumferential surface into an inner side tire shoulder area, an inner side rib area, a central rib area, an outer side rib area and an outer side tire shoulder area, the inner side tire shoulder area is provided with a plurality of first pattern parts; the inner rib area is provided with a plurality of first cutter groove parts; the central rib area is provided with a plurality of second cutter groove parts; the outer rib area is provided with a plurality of third cutter groove parts; the outer tire shoulder area is provided with a plurality of second pattern parts; the type of the first sipe portion, the type of the second sipe portion, and the type of the third sipe portion are different. The utility model provides a tire to solve the technical problems of loud noise and weak road holding force of the tire.

Description

Technical Field

[0001] The utility model relates to the field of tires, in particular to a tire. Background Art

[0002] In recent years, the new energy vehicle industry has achieved remarkable development achievements and has become an important force in leading the transformation of the world's automobile industry. Compared with the rapid development of new energy vehicle companies, the development of the new energy tire industry has just begun.

[0003] New energy vehicles are quite different from traditional fuel vehicles in terms of endurance, body weight, output torque and body noise. At present, new energy vehicles have the following characteristics: New energy vehicles are limited by power battery technology and have endurance anxiety. They need tires with the lowest rolling resistance as much as possible to reduce energy consumption and thus increase the mileage; the biggest feature of new energy vehicles is that they start quickly, have large output torque and more direct power response; new energy vehicles use a large number of battery packs instead of internal combustion engines, making the vehicle weight more than 20% heavier than ordinary internal combustion engine vehicles; new energy vehicles do not have internal combustion engines, and the noise and vibration of the motor are much less than that of internal combustion engines. The noise mainly comes from tire noise and wind noise; the start-up acceleration is fast. In order to ensure that the tires do not slip during instantaneous acceleration, the tires need to have stronger grip to ensure driving safety. Based on the above characteristics, higher requirements are required for tires, requiring new energy vehicle tires to perform better in rolling resistance, load capacity, grip performance, wear resistance, and low noise. Utility Model Content

[0004] The utility model provides a tire to solve the technical problems of large tire noise and weak grip.

[0005] In order to solve the above technical problems, an embodiment of the utility model provides a tire, wherein the circumferential surface is provided with a first longitudinal groove, a second longitudinal groove, a third longitudinal groove and a fourth longitudinal groove spaced apart from each other along the direction from the inside to the outside, so as to divide the circumferential surface into an inner shoulder area, an inner rib area, a central rib area, an outer rib area and an outer shoulder area, the inner shoulder area having a plurality of first tread portions, and the plurality of first tread portions are spaced apart along the circumference of the tire; the inner rib area having a plurality of first knife groove portions, and the plurality of first knife groove portions are spaced apart along the circumference of the tire; the central rib area having a plurality of second knife groove portions, and the plurality of second knife groove portions are spaced apart along the circumference of the tire; the outer rib area having a plurality of third knife groove portions, and the plurality of third knife groove portions are spaced apart along the circumference of the tire; the outer shoulder area having a plurality of second pattern portions, and the plurality of second pattern portions are spaced apart along the circumference of the tire; wherein the types of the first knife groove portions, the types of the second knife groove portions and the types of the third knife groove portions are different.

[0006] In some embodiments of the present application, the first knife groove portion includes a first straight groove and a second straight groove, the extension direction of the first straight groove and the extension direction of the second straight groove are parallel and are both inclined compared to the axial direction of the tire, the first straight groove and the second straight groove are spaced apart in the direction from the inside to the outside, and the first straight groove and the second straight groove are spaced apart along the circumference of the tire.

[0007] In some embodiments of the present application, the first sipe portion further includes a first bending groove and a third straight groove; the first bending groove includes a first straight section, a second straight section and a first connecting section, the extension direction of the first straight section and the extension direction of the second straight section are parallel and both are inclined relative to the axial direction of the tire, the first straight section and the second straight section are spaced apart along the circumference of the tire, and the first connecting section is connected to the outer end of the first straight section and the inner end of the second straight section; the third straight groove is located on the same side of the first bending groove, the first straight groove and the second straight groove in the circumference of the tire.

[0008] In some embodiments of the present application, an inner end of the third straight groove is connected to the first longitudinal groove, and an outer end of the third straight groove is connected to the second longitudinal groove.

[0009] In some embodiments of the present application, the second sipe portion includes a second bending groove and a third bending groove spaced apart along the circumference of the tire; the second bending groove includes a third straight segment and a fourth straight segment, the extension direction of the third straight segment is inclined compared to the axial direction of the tire, the fourth straight segment extends along the circumference of the tire and is connected to the inner end of the third straight segment; the third bending groove includes a fifth straight segment and a sixth straight segment, the extension direction of the fifth straight segment is inclined compared to the axial direction of the tire, the sixth straight segment extends along the circumference of the tire and is connected to the outer end of the fifth straight segment.

[0010] In some embodiments of the present application, the second knife groove portion also includes a fourth straight groove, which is connected to an end of the fourth straight section away from the third straight section, and the inner end and the outer end of the fourth straight groove are respectively connected to the second longitudinal groove and the third longitudinal groove.

[0011] In some embodiments of the present application, the third sipe portion includes a fourth bending groove and a fifth bending groove spaced apart along the circumference of the tire; the fourth bending groove includes a seventh straight segment, an eighth straight segment and a second connecting segment, the extension direction of the seventh straight segment and the extension direction of the eighth straight segment are both inclined relative to the axial direction of the tire, the seventh straight segment and the eighth straight segment are spaced apart in the circumferential direction of the tire, and the second connecting segment is connected to the outer end of the seventh straight segment and the inner end of the eighth straight segment; the fifth bending groove includes a ninth straight segment, a tenth straight segment and a third connecting segment, the extension direction of the ninth straight segment and the extension direction of the tenth straight segment are both inclined relative to the axial direction of the tire, the ninth straight segment and the tenth straight segment are spaced apart in the circumferential direction of the tire, and the third connecting segment is connected to the outer end of the ninth straight segment and the inner end of the tenth straight segment.

[0012] In some embodiments of the present application, the third knife groove portion also includes a fifth straight groove extending along the axial direction of the tire, and along the circumference of the tire, the fifth straight groove is located between the fifth bending groove and the fourth bending groove; the inner end of the fifth straight groove is connected to the third longitudinal groove, and the outer end of the fifth straight groove is spaced apart from the fourth longitudinal groove.

[0013] In some embodiments of the present application, the first pattern portion includes a first pattern groove and a first pattern groove, the extension direction of the first pattern groove and the extension direction of the first pattern groove are parallel and are both inclined compared to the axial direction of the tire, and the width of the first pattern groove is greater than the width of the first pattern groove; the second pattern portion includes a second pattern groove and a second pattern groove, the extension direction of the second pattern groove and the extension direction of the second pattern groove are parallel and are both inclined compared to the axial direction of the tire, and the width of the second pattern groove is greater than the width of the second pattern groove.

[0014] In some embodiments of the present application, the first groove includes a first main body portion and a first convex portion provided at the inner end of the first main body portion, and along the circumferential direction of the tire, the size of the first convex portion is larger than the size of the first main body portion; the second groove includes a second main body portion and a second convex portion provided at the outer end of the second main body portion, and along the circumferential direction of the tire, the size of the second convex portion is larger than the size of the second main body portion.

[0015] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0016] In the present application, a plurality of first tread portions are arranged in the inner shoulder area, a plurality of first sipe portions are arranged in the inner rib area, a plurality of second sipe portions are arranged in the central rib area, a plurality of third sipe portions are arranged in the outer rib area, and a plurality of second tread portions are arranged in the outer shoulder area, which can well divide the tire into multiple blocks and form air blocks between the blocks, thereby reducing the noise generated by air squeezing and achieving the purpose of effective noise reduction; and, when the tire is running on wet ground, the arrangement of different types of first sipe portions, second sipe portions, third sipe portions, first pattern portions, and second pattern portions can destroy the water film formed on the road surface and improve the drainage performance and grip performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 : It is a schematic diagram of the local structure of the tire surface of the utility model;

[0018] Figure 2 : It is a schematic diagram of the tire surface structure of the utility model.

[0019] The reference numerals of the drawings in the specification are as follows:

[0020] 1-first longitudinal groove; 2-second longitudinal groove; 3-third longitudinal groove; 4-fourth longitudinal groove; 5-inner shoulder area; 51-first tread portion; 511-first tread groove; 511a-first main body portion; 511b-first convex portion; 512-first tread groove; 6-inner rib area; 61-first sipe portion; 611-first straight groove; 612-second straight groove; 613-first bending groove; 613a-first straight section; 613b-second straight section; 613c-first connecting section; 614-third straight groove; 7-central rib area; 71-second sipe portion; 711-second bending groove; 711a-third straight section; 711b-fourth straight section; 712-third bending groove; 712a-fifth straight section; 712b-sixth straight section; 713-fourth straight groove; 8-outer rib area; 81-third knife groove portion; 811-fourth bending groove; 811a-seventh straight section; 811b-eighth straight section; 811c-second connecting section; 812-fifth bending groove; 812a-ninth straight section; 812b-tenth straight section; 812c-third connecting section; 813-fifth straight groove; 9-outer shoulder area; 91 second tread portion; 911-second tread groove; 911a-first main body portion; 911b-first convex portion; 912-second tread groove. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] New energy vehicles are quite different from traditional fuel vehicles in terms of endurance, body weight, output torque and body noise. The differences between new energy vehicle tires and ordinary tires are explained from the following three aspects. First, comfort. Automobile noise is a key factor affecting driving comfort, including engine noise, wind noise and tire noise. Nowadays, new energy vehicles have no engine noise interference, so tire noise becomes particularly obvious, which requires tires to have good quietness. Second, safety. New energy vehicles have a fast starting speed. In order to ensure that the tires do not slip when accelerating instantly, the tires need to have stronger grip to ensure driving safety. Third, energy saving. For new energy vehicles, the cruising range is very important, but there is a lack of charging piles and battery technology is limited. It can be considered from the perspective of power saving. Therefore, it is necessary to reduce the rolling resistance of tires to minimize energy consumption and increase the cruising range. Therefore, it is necessary to improve the tires to improve the performance of new energy vehicle tires in rolling resistance, load capacity, grip performance, wear resistance, and low noise.

[0023] refer to Figure 1 and Figure 2, the embodiment of the utility model provides a tire, the tire has a circumferential surface, wherein the position installed on the inner side of the vehicle is the inner side of the tire, and the position installed on the outer side of the vehicle is the outer side of the tire. Along the direction from the inside to the outside, the circumferential surface is provided with a first longitudinal groove 1, a second longitudinal groove 2, a third longitudinal groove 3 and a fourth longitudinal groove 4 spaced apart from each other, so as to divide the circumferential surface into an inner shoulder area 5, an inner rib area 6, a central rib area 7, an outer rib area 8, and an outer shoulder area 9. That is to say, along the direction from the inside to the outside, the inner shoulder area 5, the first longitudinal groove 1, the inner rib area 6, the second longitudinal groove 2, the central rib area 7, the third longitudinal groove 3, the outer rib area 8, the fourth longitudinal groove 4 and the outer shoulder area 9 are arranged in sequence. The first longitudinal groove 1, the second longitudinal groove 2, the third longitudinal groove 3 and the fourth longitudinal groove 4 extend along the circumferential direction of the tire, and are arranged at intervals along the direction from the inside to the outside of the tire. The width of any one of the first longitudinal groove 1, the second longitudinal groove 2, the third longitudinal groove 3 and the fourth longitudinal groove 4 is greater than the width of any one of the patterns in the inner shoulder area 5, the outer shoulder area 9, the inner rib area 6, the central rib area 7 and the outer rib area 8. The four longitudinal grooves are the main grooves of the tire, which can provide good drainage performance, improve the braking and braking of the tire when the road surface is wet, and improve driving safety. The inner rib area 6, the central rib area 7 and the outer rib area 8 are arranged between the first longitudinal groove 1 and the fourth longitudinal groove 4, which increases the contact area with the ground, increases the wear mileage while reducing the rolling resistance, and improves the cruising range of the vehicle.

[0024] The inner shoulder area 5 has a plurality of first tread portions 51, which are spaced apart along the circumference of the tire; the inner rib area 6 has a plurality of first knife groove portions 61, which are spaced apart along the circumference of the tire; the central rib area 7 has a plurality of second knife groove portions 71, which are spaced apart along the circumference of the tire; the outer rib area 8 has a plurality of third knife groove portions 81, which are spaced apart along the circumference of the tire; the outer shoulder area 9 has a plurality of second pattern portions 91, which are spaced apart along the circumference of the tire; wherein the types of the first knife groove portions 61, the types of the second knife groove portions 71 and the types of the third knife groove portions 81 are different.

[0025] The wide inner rib area 6, the central rib area 7 and the outer rib area 8 in the center of the tire can increase the wear mileage while reducing the rolling resistance, thereby improving the vehicle's cruising range; and the wider inner rib area 6, the central rib area 7 and the outer rib area 8 increase the tire's contact area, improve the grip, achieve instant response, and make wet braking more sensitive. The multiple first pattern portions 51 located in the inner shoulder area 5 and the multiple second pattern portions 91 located in the outer shoulder area 9 extend along the width direction of the tire from the inside to the outside, which can assist in drainage. In addition, the extension direction of the first pattern portion 51 and the second pattern portion 91 is perpendicular to the rolling direction of the tire, which can enhance the tire's grip and effectively prevent side slip. The first sipe portion 61, the second sipe portion 71 and the third sipe portion 81 are of different types, including but not limited to shape, width, length, inclination angle, pitch, etc. The first sipe portion 61, the second sipe portion 71 and the third sipe portion 81 are designed into various types, and the tire is divided into multiple small areas. Partitions are formed between each small area, and air is blocked between each small area, reducing the noise generated by air compression, thereby achieving noise reduction. The first pattern portion 51, the second pattern portion 91, the first sipe portion 61, the second sipe portion 71 and the third pattern portion on the entire tire adopt a variety of pitches to ensure grip while improving driving comfort, reducing noise, and improving vehicle endurance performance.

[0026] The arrangement of the inner rib area 6, the central rib area 7 and the outer rib area 8 increases the contact area of ​​the tire, improves the grip and achieves timely response, makes wet braking more agile, and increases the wear mileage, reduces rolling resistance, and improves the cruising range of the vehicle. The first sipe portion 61, the second sipe portion 71 and the third sipe portion 81 can compress the air during the use of the tire, reduce the noise generated by air compression, achieve the purpose of noise reduction, and provide a quiet and comfortable driving experience. In addition, when the tire is on a wet ground, the first sipe portion 61, the second sipe portion 71 and the third sipe portion 81 can destroy the water film on the road surface, improve drainage performance, and increase wetland safety.

[0027] In some embodiments of the present application, the width of the fourth longitudinal groove 4 is smaller than the width of any one of the first longitudinal groove 1, the second longitudinal groove 2 and the third longitudinal groove 3. Along the direction from the inside to the outside of the tire, the width of the fourth longitudinal groove 4 on the outside is the smallest, and the main function of the outside is gripping. The narrower fourth longitudinal groove 4 on the outside can increase the contact area of ​​the outer area, improve the rigidity of the outer shoulder, and improve the grip performance; the width of the first longitudinal groove 1, the second longitudinal groove 2 and the third longitudinal groove 3 on the inside is wider, and the main function of the inside is drainage. The wider first longitudinal groove 1, the second longitudinal groove 2 and the third longitudinal groove 3 on the inside can improve the drainage performance. In an optional embodiment, the width of any one of the first longitudinal groove 1 and the second longitudinal groove 2 is greater than the width of any one of the third longitudinal groove 3 and the fourth longitudinal groove 4.

[0028] In the embodiments of the present application, the inner shoulder area 5, the inner rib area 6, the central rib area 7, the outer rib area 8 and the outer shoulder area 9 are arranged in a multi-pitch manner to further improve the driving comfort and grip and enhance the vehicle endurance performance.

[0029] In some embodiments of the present application, the extension direction of the first sipe portion 61 is tilted relative to the axial direction of the tire, the extension direction of the second sipe portion 71 is tilted relative to the axial direction of the tire, and the extension direction of the third sipe portion 81 is tilted relative to the axial direction of the tire. The first sipe portion 61, the second sipe portion 71, and the third sipe portion 81 are all tilted relative to the axial direction of the tire, so that the tire has better grip and improves the safety factor. That is, the extension direction of the first sipe portion 61 has an angle with the axis of the tire, the extension direction of the second sipe portion 71 has an angle with the axis of the tire, and the extension direction of the third sipe portion 81 has an angle with the axis of the tire, that is, along the tire width direction from the inside to the outside, the extension direction of the first sipe portion 61 has an angle with the width of the tire, the extension direction of the second sipe portion 71 has an angle with the width of the tire, and the extension direction of the third sipe portion 81 has an angle with the width of the tire. The angle range is 35 degrees to 45 degrees, such as 40 degrees. The angles between the first sipe portion 61, the second sipe portion 71 and the third sipe portion 81 and the tire width or axis are not necessarily the same. Providing sipes or grooves with an inclined angle on the tire surface can effectively reduce the tearing generated during the use of the tire.

[0030] In some embodiments of the present application, the first sipe portion 61 includes a first linear groove 611 and a second linear groove 612, the extension direction of the first linear groove 611 and the extension direction of the second linear groove 612 are parallel and both are inclined relative to the axial direction of the tire, the first linear groove 611 and the second linear groove 612 are arranged at intervals from the inside to the outside, and the first linear groove 611 and the second linear groove 612 are arranged at intervals along the circumference of the tire. That is, along the direction from the inside to the outside, the first linear groove 611 is located on the inside of the inner rib area 6, the second linear groove 612 is located on the outside of the inner rib area 6, and the first linear groove 611 and the second linear groove 612 are spaced apart from each other along the direction from the inside to the outside. The first linear groove 611 and the second linear groove 612 are arranged at intervals along the circumference of the tire, that is, the extension line of the first linear groove 611 and the extension line of the second linear groove 612 do not intersect, and the first linear groove 611 and the second linear groove 612 are arranged alternately along the circumference of the tire. The inner end of the first linear groove 611 is spaced from the first longitudinal groove 1, and the outer end of the first linear groove 611 is spaced from the second longitudinal groove 2; the inner end of the second linear groove 612 is spaced from the first longitudinal groove 1, and the outer end of the second linear groove 612 is spaced from the second longitudinal groove 2. The inner rib area 6 is provided with the first linear groove 611 and the second linear groove 612 which are spaced circumferentially and also spaced from the inside to the outside, so that the entire inner rib area 6 is divided into a plurality of small areas, and the plurality of first linear grooves 611 and the plurality of second linear grooves 612 block the connection between the areas, reduce the noise generated by air squeezing, and better achieve tire noise reduction.

[0031] In some embodiments of the present application, the first knife groove portion 61 also includes a first bent groove 613 and a third straight groove 614; the first bent groove 613 includes a first straight section 613a, a second straight section 613b and a first connecting section 613c, the extension direction of the first straight section 613a and the extension direction of the second straight section 613b are parallel and both are inclined relative to the axial direction of the tire, the first straight section 613a and the second straight section 613b are spaced apart along the circumferential direction of the tire, and the first connecting section 613c is connected to the outer end of the first straight section 613a and the inner end of the second straight section 613b; the third straight groove 614 is located on the same side of the first bent groove 613, the first straight groove 611 and the second straight groove 612 in the circumferential direction of the tire. That is, the first bending groove 613 has a first straight section 613a and a second straight section 613b extending in the axial direction of the tire, a first connecting section 613c is connected between the first straight section 613a and the second straight section 613b, two ends of the first connecting section 613c are respectively connected to the inner end of the first straight section 613a and the outer end of the second straight section 613b, and the connection between the first connecting section 613c and the first straight section 613a and the second straight section 613b is a rounded transition. In an optional embodiment, the first connecting section 613c is "S" shaped. The first straight section 613a is located on the inner side of the inner rib area 6, and the inner end of the first straight section 613a is the inner end of the first bending groove 613. The second straight section 613b is located on the outer side of the inner rib area 6, and the outer end of the second straight section 613b is the outer end of the first bending groove 613, that is, the outer end of the first bending groove 613 is separated from the second longitudinal groove 2, and the inner end of the first bending groove 613 is separated from the first longitudinal groove 1.

[0032] Along the width direction of the tire, that is, from the inside to the outside, the first bending groove 613 is located between the first straight groove 611 and the second straight groove 612, and the outer end of the first straight groove 611 and the inner end of the second straight groove 612 are both spaced apart from the first bending groove 613; along the circumferential direction of the tire, the third straight groove 614 is spaced apart from the first straight groove 611 and the second straight groove 612, and along the width direction of the tire, the third straight groove 614 is located on the same side of the first straight groove 611, the second straight groove 612 and the first bending groove 613, that is, along the circumferential direction of the tire, the third straight groove 614 is located on the same side of the first bending groove 613, the first straight groove 611 and the second straight groove 612 in the circumferential direction of the tire, and the inner rib area 6 has a plurality of first knife groove portions 61 arranged at intervals, and the first knife groove portion 61 includes the first straight groove 611, the second straight groove 612, the third straight groove 614 and the first bending groove 613. The inner rib area 6 adopts various styles of sipes, which can avoid air resonance formed by the same style of sipes and reduce noise. At the same time, the connection between the first connecting section 613c and the first straight section 613a and the second straight section 613b adopts rounded transition, which can increase grip and shorten braking distance.

[0033] In some embodiments of the present application, the inner end of the third linear groove 614 is connected to the first longitudinal groove 1, and the outer end of the third linear groove 614 is connected to the second longitudinal groove 2. The above arrangement can accelerate the response speed of the tire, improve drainage performance, and enhance wetland safety. In an optional embodiment, the third linear groove 614 is an arc groove, and the air flow of the arc groove is longer, which has a better noise reduction effect.

[0034] In some embodiments of the present application, the second knife groove portion 71 includes a second bending groove 711 and a third bending groove 712 spaced apart along the circumference of the tire; the second bending groove 711 includes a third straight segment 711a and a fourth straight segment 711b, the extension direction of the third straight segment 711a is inclined compared to the axial direction of the tire, and the fourth straight segment 711b extends along the circumference of the tire and is connected to the inner end of the third straight segment 711a; the third bending groove 712 includes a fifth straight segment 712a and a sixth straight segment 712b, the extension direction of the fifth straight segment 712a is inclined compared to the axial direction of the tire, and the sixth straight segment 712b extends along the circumference of the tire and is connected to the outer end of the fifth straight segment 712a. Specifically, the third straight segment 711a and the fifth straight segment 712a are spaced apart along the circumferential direction of the tire, and the third straight segment 711a and the fifth straight segment 712a extend in the axial direction of the tire and are inclined relative to the axial direction; the fourth straight segment 711b and the sixth straight segment 712b extend in the circumferential direction of the tire, and the fourth straight segment 711b is connected to the sixth straight segment 712b. The outer side of the third straight segment 711a is spaced apart from the third longitudinal groove 3, and the inner side of the fifth straight segment 712a is spaced apart from the second longitudinal groove 2. In an optional embodiment, the extension lines of the fourth straight segment 711b and the sixth straight segment 712b are on the same straight line, connected between the inner end of the third straight segment 711a and the outer end of the fifth straight segment 712a. It should be understood that the connection between the third straight section 711a and the fourth straight section 711b is a rounded transition, and the connection between the fifth straight section 712a and the sixth straight section 712b is also a rounded transition. The central rib area 7 increases the grip and shortens the braking distance by providing the knife groove with a bent portion, and can compress the air and reduce the noise.

[0035] In some embodiments of the present application, the second grooving portion 71 further includes a fourth straight groove 713, the fourth straight groove 713 is connected to one end of the fourth straight section 711b away from the third straight section 711a, and the inner end and the outer end of the fourth straight groove 713 are respectively connected to the second longitudinal groove 2 and the third longitudinal groove 3. In other words, the fourth straight groove 713 is connected to the connection between the fourth straight section 711b and the sixth straight section 712b, and the fourth straight groove 713 is separated from the third straight section 711a and the fifth straight section 712a. The two ends of the fourth straight groove 713 are respectively connected to the second longitudinal groove 2 and the third longitudinal groove 3, which can accelerate the discharge of moisture, improve drainage performance, and enhance wetland safety. In an optional embodiment, the fourth straight groove 713 is an arc groove, and the air flow of the arc groove is longer, which has a better noise reduction effect.

[0036] In some embodiments of the present application, the third sipe portion 81 includes a fourth bending groove 811 and a fifth bending groove 812 spaced apart along the circumference of the tire; the fourth bending groove 811 includes a seventh straight segment 811a, an eighth straight segment 811b and a second connecting segment 811c, the extension direction of the seventh straight segment 811a and the extension direction of the eighth straight segment 811b are both inclined relative to the axial direction of the tire, the seventh straight segment 811a and the eighth straight segment 811b are spaced apart in the circumference of the tire, and the second connecting segment 811c is connected to the outer end of the seventh straight segment 811a and the inner end of the eighth straight segment 811b. The seventh straight segment 811a is located on the inner side of the outer rib region 8, and the eighth straight segment 811b is located on the outer side of the outer rib region 8. The inner end of the fourth bending groove 811 is also the inner end of the seventh straight section 811a, and the outer end of the fourth bending groove 811 is also the outer end of the eighth straight section 811b. The inner end of the fourth bending groove 811 is connected to the third longitudinal groove 3, and the outer end of the fourth bending groove 811 is separated from the fourth longitudinal groove 4. The second connecting section 811c is connected to the seventh straight section 811a and the eighth straight section 811b by a rounded transition.

[0037] The fifth bending groove 812 includes a ninth straight segment 812a, a tenth straight segment 812b and a third connecting segment 812c. The extending directions of the ninth straight segment 812a and the tenth straight segment 812b are both inclined relative to the axial direction of the tire. The ninth straight segment 812a and the tenth straight segment 812b are spaced apart in the circumferential direction of the tire. The third connecting segment 812c is connected to the outer end of the ninth straight segment 812a and the inner end of the tenth straight segment 812b. The ninth straight segment 812a is located inside the outer rib region 8, and the tenth straight segment 812b is located outside the outer rib region 8. The inner end of the fifth bending groove 812 is also the inner end of the ninth straight segment 812a, and the outer end of the fifth bending groove 812 is also the outer end of the tenth straight segment 812b. The inner end of the fifth bending groove 812 is connected to the third longitudinal and transverse grooves, and the outer end of the fifth bending groove 812 is connected to the fourth longitudinal groove 4. The seventh straight segment 811a, the eighth straight segment 811b, the ninth straight segment 812a and the tenth straight segment 812b are spaced apart along the circumferential direction of the tire, and the spacing between the seventh straight segment 811a and the ninth straight segment 812a is greater than the spacing between the eighth straight segment 811b and the tenth straight segment 812b. The third connecting segment 812c is connected to the ninth straight segment 812a and the tenth straight segment 812b by a rounded transition.

[0038] In some embodiments of the present application, the third sipe portion 81 further includes a fifth straight groove 813 extending in the axial direction of the tire. In the circumferential direction of the tire, the fifth straight groove 813 is located between the fifth bending groove 812 and the fourth bending groove 811. Specifically, the fifth straight groove 813 is located between the seventh straight segment 811a and the ninth straight segment 812a. The inner end of the fifth straight groove 813 is connected to the third longitudinal groove 3, and the outer end of the fifth straight groove 813 is spaced apart from the fourth longitudinal groove 4.

[0039] Different types of sipes are respectively arranged in the inner rib area 6, the central rib area 7 and the outer rib area 8. When the tire acts on the ground, the sipes can not only compress the air, but also avoid the air resonance formed by the tire cavity of the same style, thereby achieving the purpose of reducing noise; and the inner rib area 6, the central rib area 7 and the outer rib area 8 use different shapes of bending grooves to increase the grip and shorten the braking distance. In addition, the first straight groove 611 and the second straight groove 612 are both connected to the longitudinal grooves on both sides, and the third straight groove 614, the seventh straight section 811a and the ninth straight section 812a are all connected to the third longitudinal groove 3, which can improve the drainage capacity of the inner side of the tire and the grip of the outer side of the tire.

[0040] In some embodiments of the present application, the first pattern portion 51 includes a first pattern groove 511 and a first pattern groove 512. The extension direction of the first pattern groove 511 and the extension direction of the first pattern groove 512 are parallel and both are inclined relative to the axial direction of the tire. The width of the first pattern groove 511 is greater than the width of the first pattern groove 512. In a specific embodiment, the first pattern portion 51 includes a first pattern groove 511 and two first pattern grooves 512. The first pattern groove 511 is mainly used to assist drainage, and the first pattern groove 512 is mainly used to destroy the water film on the road surface, improve drainage performance, and enhance the grip of the tire.

[0041] The second pattern portion 91 includes a second pattern groove 911 and a second pattern groove 912. The extension direction of the second pattern groove 911 and the extension direction of the second pattern groove 912 are parallel and both are inclined relative to the axial direction of the tire. The width of the second pattern groove 911 is greater than the width of the second pattern groove 912. In a specific embodiment, the second pattern portion 91 includes the second pattern groove 911 and two second pattern grooves 912. The second pattern groove 911 is mainly used to assist drainage, and the second pattern groove 912 is mainly used to destroy the water film on the road surface, improve drainage performance, and enhance the grip of the tire.

[0042] In some embodiments of the present application, the first groove 511 includes a first body portion 511a and a first convex portion 511b provided at the inner end of the first body portion 511a, and along the circumferential direction of the tire, the size of the first convex portion 511b is greater than the size of the first body portion 511a; the second groove 911 includes a second body portion 911a and a second convex portion 911b provided at the outer end of the second body portion 911a, and along the circumferential direction of the tire, the size of the second convex portion 911b is greater than the size of the second body portion 911a. In other words, the inner end of the first groove 511 has the first convex portion 511b, and the width of the first convex portion 511b along the circumferential direction of the tire is greater than the width of the first body portion 511a along the circumferential direction of the tire. The outer end of the second groove 911 has the second convex portion 911b, and the width of the second convex portion 911b along the circumferential direction of the tire is greater than the width of the second body portion 911a along the circumferential direction of the tire. A first convex portion 511 b and a second convex portion 911 b having a larger width are respectively provided at the inner end of the first groove 511 and the outer end of the second groove 911 , so that the drainage efficiency of the first groove 511 and the second groove 911 can be improved.

[0043] That is, the outer end of the first groove 511 is spaced from the first longitudinal groove 1, and the inner end of the second groove 911 is spaced from the fourth longitudinal groove 4. The width of the first groove 511 and the width of the third groove are smaller than the grooves on the shoulder of the existing tire of the same type, which can reduce the noise generated by the pumping effect during rolling and improve driving comfort. When the tire rolls, the first longitudinal groove 1 in contact with the ground forms a closed tubular area with the ground, and the fourth longitudinal groove 4 forms a closed tubular area with the ground, and the airflow is compressed and blocked from being released, which can reduce the outflow of the airflow in the first longitudinal groove 1 and the fourth longitudinal groove 4.

[0044] The tire of the utility model adopts an asymmetric pattern setting, and the tire is provided with four longitudinal grooves, which can improve the good drainage performance; the shoulder area includes an inner shoulder area 5 and an outer shoulder area 9, and a first pattern groove 511 is respectively provided in the inner shoulder area 5, and a second pattern groove 911 is provided in the outer shoulder area 9, so as to improve the drainage and grip of the tire on wet roads; an inner rib area 6, a central rib area 7 and an outer rib area 8 are provided in the rib area, and a plurality of different types of first sipe portions 61, second sipe portions 71 and third sipe portions 81 are provided in the rib area, the first sipe portion 61 includes a first straight groove 611, a second straight groove 612, a third straight groove 614 and a first bending groove 613, the second sipe portion 71 includes a second bending groove 711, a third bending groove 712 and a fourth straight groove 713, and the third sipe portion 81 includes a fourth bending groove 811, a fifth bending groove 812 and a fifth straight groove 813. When the tire is pressed on the ground, the various types of grooves of the first groove portion 61, the second groove portion 71 and the third groove portion 81 can destroy the water film on the road surface, improve the drainage performance, and increase wetland safety. The grooves of the first groove portion 61, the second groove portion 71 and the third groove portion 81 are designed to be of different numbers and types, dividing the tire into multiple small areas, forming partitions between each small area, and the air is blocked between the small areas, reducing the noise generated by air squeezing, thereby achieving noise reduction.

[0045] The specific embodiments described above further describe the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only a specific embodiment of the utility model and is not intended to limit the protection scope of the utility model. It is particularly pointed out that for those skilled in the art, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A tire having a circumferential surface, characterized in that: Along the direction from the inside to the outside, the circumferential surface is provided with a first longitudinal groove, a second longitudinal groove, a third longitudinal groove and a fourth longitudinal groove which are spaced apart from each other, so as to divide the circumferential surface into: An inner shoulder region has a plurality of first pattern portions, wherein the plurality of first pattern portions are arranged at intervals along the circumferential direction of the tire; An inner rib region has a plurality of first sipe portions, wherein the plurality of first sipe portions are arranged at intervals along the circumferential direction of the tire; A central rib region has a plurality of second sipes, wherein the plurality of second sipes are arranged at intervals along the circumference of the tire; The outer rib region has a plurality of third sipes, wherein the plurality of third sipes are arranged at intervals along the circumferential direction of the tire; An outer shoulder region has a plurality of second pattern portions, wherein the plurality of second pattern portions are arranged at intervals along the circumferential direction of the tire; The type of the first sipe portion, the type of the second sipe portion, and the type of the third sipe portion are different.

2. The tire according to claim 1, characterized in that The first knife groove portion includes a first straight groove and a second straight groove, the extension direction of the first straight groove and the extension direction of the second straight groove are parallel and are both inclined compared to the axial direction of the tire, the first straight groove and the second straight groove are spaced apart in the direction from the inside to the outside, and the first straight groove and the second straight groove are spaced apart along the circumferential direction of the tire.

3. The tire according to claim 2, characterized in that The first sipe portion further includes a first bending groove and a third straight groove; The first bending groove comprises a first straight section, a second straight section and a first connecting section, the extending direction of the first straight section and the extending direction of the second straight section are parallel and both are arranged to be inclined relative to the axial direction of the tire, the first straight section and the second straight section are arranged to be spaced apart along the circumferential direction of the tire, and the first connecting section is connected to the outer end of the first straight section and the inner end of the second straight section; The third straight groove is located on the same side of the first bending groove, the first straight groove and the second straight groove in the circumferential direction of the tire.

4. The tire according to claim 3, characterized in that The inner end of the third linear groove is communicated with the first longitudinal groove, and the outer end of the third linear groove is communicated with the second longitudinal groove.

5. The tire according to claim 1, characterized in that The second sipe portion includes a second bending groove and a third bending groove spaced apart in the circumferential direction of the tire; The second bending groove includes a third straight section and a fourth straight section, the extension direction of the third straight section is inclined relative to the axial direction of the tire, and the fourth straight section extends along the circumferential direction of the tire and is connected to the inner end of the third straight section; The third bending groove includes a fifth straight segment and a sixth straight segment. The extension direction of the fifth straight segment is inclined relative to the axial direction of the tire. The sixth straight segment extends along the circumference of the tire and is connected to the outer end of the fifth straight segment.

6. The tire according to claim 5, characterized in that The second sipe portion further includes a fourth linear groove connected to an end of the fourth straight section away from the third straight section, wherein the inner end and the outer end of the fourth linear groove are respectively connected to the second longitudinal groove and the third longitudinal groove.

7. The tire according to claim 1, characterized in that The third sipe portion includes a fourth bending groove and a fifth bending groove spaced apart in the circumferential direction of the tire; The fourth bending groove includes a seventh straight segment, an eighth straight segment and a second connecting segment, the extending directions of the seventh straight segment and the eighth straight segment are both inclined relative to the axial direction of the tire, the seventh straight segment and the eighth straight segment are spaced apart in the circumferential direction of the tire, and the second connecting segment is connected to the outer end of the seventh straight segment and the inner end of the eighth straight segment; The fifth bending groove includes a ninth straight segment, a tenth straight segment and a third connecting segment. The extension directions of the ninth straight segment and the tenth straight segment are both inclined relative to the axial direction of the tire. The ninth straight segment and the tenth straight segment are spaced apart in the circumferential direction of the tire. The third connecting segment is connected to the outer end of the ninth straight segment and the inner end of the tenth straight segment.

8. The tire according to claim 7, characterized in that The third sipe portion further includes a fifth straight groove extending in the axial direction of the tire, and along the circumferential direction of the tire, the fifth straight groove is located between the fifth bending groove and the fourth bending groove; An inner end of the fifth linear groove is communicated with the third longitudinal groove, and an outer end of the fifth linear groove is spaced apart from the fourth longitudinal groove.

9. The tire according to claim 1, characterized in that The first pattern portion includes a first pattern groove and a first pattern groove, the extension direction of the first pattern groove and the extension direction of the first pattern groove are parallel and both are arranged to be inclined relative to the axial direction of the tire, and the width of the first pattern groove is greater than the width of the first pattern groove; The second pattern portion includes a second pattern groove and a second pattern groove, the extension direction of the second pattern groove and the extension direction of the second pattern groove are parallel and both are inclined compared to the axial direction of the tire, and the width of the second pattern groove is greater than the width of the second pattern groove.

10. The tire according to claim 9, characterized in that The first groove includes a first main body portion and a first convex portion provided at an inner end of the first main body portion, and along the circumferential direction of the tire, a size of the first convex portion is larger than a size of the first main body portion; The second groove includes a second main body portion and a second convex portion provided at an outer end of the second main body portion. Along the circumferential direction of the tire, the size of the second convex portion is larger than that of the second main body portion.

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