Tire

Abstract

The utility model relates to the field of tires, in particular to a tire. The tire is provided with a circumferential surface, and a first longitudinal groove, a second longitudinal groove, a third longitudinal groove and a fourth longitudinal groove are formed in the circumferential surface in the direction from inside to outside, so that the circumferential surface is divided 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 grooves; a plurality of first cutter grooves are formed in the inner side rib area and are arranged at intervals in the circumferential direction of the tire; a plurality of second cutter grooves are formed in the central rib area and are arranged at intervals in the circumferential direction of the tire; the outer rib region is provided with a plurality of second pattern grooves which are arranged at intervals in the circumferential direction of the tire; the outer tire shoulder area is provided with a plurality of third pattern grooves; the type of the first sipe, the type of the second sipe, and the type of the second pattern groove are different. The tire is used for solving the technical problem of high noise 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 EV electric vehicle industry has achieved tremendous development and has become an important force in leading the transformation of the world's automotive industry. Compared with the rapid development of automobile companies, the development of the EV electric vehicle tire industry has just begun.

[0003] EV electric vehicles are quite different from traditional fuel vehicles in terms of endurance, body weight, output torque and noise. At present, EV electric vehicles have the following characteristics: EV electric vehicles are limited by power battery technology and have range anxiety; the biggest feature of EV electric vehicles is that they start quickly, have large output torque, and have more direct power response; EV electric 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; EV electric 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. Since the tire noise of the current tire is relatively large, this application improves the tire to make it have a better quiet effect. Utility Model Content

[0004] The utility model provides a tire to solve the technical problem of high tire noise.

[0005] In order to solve the above technical problems, an embodiment of the utility model provides a tire, which has a circumferential surface, and 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 spaced apart from each other, 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 grooves, and the plurality of first tread grooves are arranged at intervals along the circumference of the tire; the inner rib area has a plurality of first knife grooves, and the plurality of first knife grooves are arranged at intervals along the circumference of the tire; the central rib area has a plurality of second knife grooves, and the plurality of second knife grooves are arranged at intervals along the circumference of the tire; the outer rib area has a plurality of second tread grooves, and the plurality of second tread grooves are arranged at intervals along the circumference of the tire; the outer shoulder area has a plurality of third pattern grooves, and the plurality of third pattern grooves are arranged at intervals along the circumference of the tire; wherein the type of the first knife groove, the type of the second knife groove and the type of the second pattern groove are different.

[0006] In some embodiments of the present application, the extension direction of the first sipe is inclined relative to the axial direction of the tire, the extension direction of the second sipe is inclined relative to the axial direction of the tire, and the extension direction of the second tread groove is inclined relative to the axial direction of the tire.

[0007] In some embodiments of the present application, a width of the fourth longitudinal groove is smaller than a width of any one of the first longitudinal groove, the second longitudinal groove, and the third longitudinal groove.

[0008] In some embodiments of the present application, the first sipe includes a first sub-sipe and a second sub-sipe, the first sub-sipe and the second sub-sipe are spaced apart along the circumference of the tire, and the first sub-sipe and the second sub-sipe are spaced apart along a direction from inside to outside.

[0009] In some embodiments of the present application, the inner end of the first sub-knife groove is connected to the first longitudinal groove, and the outer end of the second sub-knife groove is connected to the second longitudinal groove.

[0010] In some embodiments of the present application, the inner end of the second knife groove and the outer end of the second knife groove are respectively connected to the second longitudinal groove and the third longitudinal groove.

[0011] In some embodiments of the present application, the inner end of the second groove is spaced apart from the third longitudinal groove, and the outer end of the second groove is connected to the fourth longitudinal groove.

[0012] In some embodiments of the present application, a bottom wall of the second knife groove is provided with a convex portion, and an end of the convex portion away from the bottom wall of the second knife groove does not exceed the central rib area.

[0013] In some embodiments of the present application, along the direction from inside to outside, the depth of the first groove gradually increases, and the depth of the third groove gradually decreases.

[0014] In some embodiments of the present application, the outer end of the first groove is spaced apart from the first longitudinal groove and has a first distance, the inner end of the third groove is spaced apart from the fourth longitudinal groove and has a second distance, and the first distance is smaller than the second distance.

[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 sipes are arranged in the inner rib area, a plurality of second sipes are arranged in the central rib area, and a plurality of second pattern grooves are arranged in the outer rib area, which can well divide the tire into multiple blocks and form air blocks between the blocks, thereby reducing the noise generated by air compression and achieving the purpose of effective noise reduction. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0019] Figure 3 : It is a schematic diagram of the surface section structure of the tire of the utility model.

[0020] The reference numerals of the drawings in the specification are as follows:

[0021] 1-first longitudinal groove; 2-second longitudinal groove; 3-third longitudinal groove; 4-fourth longitudinal groove; 5-inner shoulder area; 51-first tread groove; 6-inner rib area; 61-first knife groove; 61a first sub-knife groove; 61b-second sub-knife groove; 7-central rib area; 71-second knife groove; 72-bump; 8-outer rib area; 81-second tread groove; 9-outer shoulder area; 91 third tread groove. DETAILED DESCRIPTION

[0022] 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.

[0023] Please refer to Figures 1 to 3, 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 first pattern groove 51, the second pattern groove 81, the third pattern groove 91, the first sipe 61 and the second sipe 71. 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. An inner rib area 6, a central rib area 7 and an outer rib area 8 are provided 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 grooves 51, which are arranged at intervals along the circumference of the tire; the inner rib area 6 has a plurality of first sipes 61, which are arranged at intervals along the circumference of the tire; the central rib area 7 has a plurality of second sipes 71, which are arranged at intervals along the circumference of the tire; the outer rib area 8 has a plurality of second grooves 81, which are arranged at intervals along the circumference of the tire; the outer shoulder area 9 has a plurality of third grooves 91, which are arranged at intervals along the circumference of the tire; wherein the types of the first sipes 61, the second sipes 71 and the second grooves 81 are different. The wide inner rib area, the central rib area and the outer rib area in the center of the tire can increase the wear mileage while reducing the rolling resistance, thereby improving the cruising range of the vehicle. The plurality of first grooves 51 located in the inner shoulder area 5 and the plurality of third grooves 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 groove 51 and the third groove 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 61, the second sipe 71 and the second groove 81 are of different types, including but not limited to shape, width, length, inclination angle, pitch, etc. The first sipe 61, the second sipe 71 and the second groove 81 are designed into various types, and the tire is divided into a plurality of small areas, and partitions are formed between each small area. The air is blocked between the small areas, and the noise generated by air compression is reduced, thereby achieving noise reduction. The first groove 51, the second groove 81, the first sipe 61, the second sipe 71 and the third groove 91 on the entire tire adopt a variety of pitches, which ensure grip while improving driving comfort, reducing noise, and improving vehicle endurance performance.

[0025] 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 61, the second sipe 71 and the second groove 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 61, the second sipe 71 and the second groove 81 can destroy the water film on the road surface, improve the drainage performance, and increase the wetland safety. It should be understood that the width of the second groove 81 is greater than the width of the first sipe 61 and the second sipe 71. While achieving noise reduction, the wider groove of the second groove 81 also has better drainage performance.

[0026] In some embodiments of the present application, the extending direction of the first sipe 61 is inclined relative to the axial direction of the tire, the extending direction of the second sipe 71 is inclined relative to the axial direction of the tire, and the extending direction of the second groove 81 is inclined relative to the axial direction of the tire. The first sipe 61, the second sipe 71, and the second groove 81 are all inclined relative to the axial direction of the tire, so that the tire has better grip and improves the safety factor. That is, the first sipe 61 has an angle with the axis of the tire, the second sipe 71 has an angle with the axis of the tire, and the second groove 81 has an angle with the axis of the tire, that is, along the tire width direction from the inside to the outside, the first sipe 61 has an angle with the width of the tire, the second sipe 71 has an angle with the width of the tire, and the second groove 81 has an angle with the width of the tire. The angle ranges from 35 degrees to 45 degrees, such as 40 degrees. Among them, the angles between the first sipe 61, the second sipe 71, and the second groove 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.

[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 some embodiments of the present application, the first sipe 61 includes a first sub-sipe 61a and a second sub-sipe 61b, the first sub-sipe 61a and the second sub-sipe 61b are arranged at intervals along the circumference of the tire, and the first sub-sipe 61a and the second sub-sipe 61b are arranged at intervals from the inside to the outside. That is, from the inside to the outside, the first sub-sipe 61a is located on the inside of the inner rib area 6, the second sub-sipe 61b is located on the outside of the inner rib area 6, and the first sub-sipe 61a and the second sub-sipe 61b are spaced apart from each other along the direction from the inside to the outside. The first sub-sipe 61a and the second sub-sipe 61b are arranged at intervals along the circumference of the tire, that is, the first sub-sipe 61a and the second sub-sipe 61b are arranged alternately along the circumference of the tire, and the extension line of the first sub-sipe 61a and the extension line of the second sub-sipe 61b do not intersect. Specifically, the inner rib area 6 includes a first part, a second part, and a third part from the inside to the outside, the first sub-knife groove 61a is located in the first part, the second sub-knife groove 61b is located in the third part, the middle second part is a smooth area, and the middle smooth second part blocks the first sub-knife groove 61a and the second sub-knife groove 61b. There is a spacing between two adjacent first sub-knife grooves 61a in the first part, there is a spacing between two adjacent second sub-knife grooves 61b in the third part, and the second sub-knife groove 61b is located between the extension lines of the two adjacent first sub-knife grooves 61a. The inner rib area 6 is provided with the first sub-knife groove 61a and the second sub-knife groove 61b spaced circumferentially and 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 sub-knife grooves 61a and the plurality of second sub-knife grooves 61b block the connection between the areas, reduce the noise generated by air squeezing, and better achieve tire noise reduction.

[0029] In some embodiments of the present application, the inner end of the first sub-slot 61a is connected to the first longitudinal groove 1, and the outer end of the second sub-slot 61b is connected to the second longitudinal groove 2. The first sub-slot 61a and the second sub-slot 61b are respectively located on both sides of the inner rib area 6, the first sub-slot 61a is located on the inner side of the inner rib area 6, the first sub-slot 61a extends from the first longitudinal groove 1 to the outer side of the inner rib area 6, the inner end of the first sub-slot 61a is connected to the first longitudinal groove 1, and the outer end of the first sub-slot 61a is not connected to the second longitudinal groove 2; the second sub-slot 61b is located on the outer side of the inner rib area 6, extending from the second longitudinal groove 2 to the inner side of the inner rib area 6, the outer end of the second sub-slot 61b is connected to the second longitudinal groove 2, and the inner end of the second sub-slot 61b is not connected to the first longitudinal groove 1, and the above-mentioned arrangement can accelerate the response speed of the tire, improve the drainage performance, and enhance the wetland safety. The inner end and the outer end of the first sub-sipe 61a are consistent with the direction from the inside to the outside of the tire, and the inner end and the outer end of the second sub-sipe 61b are consistent with the direction from the inside to the outside of the tire.

[0030] In some embodiments of the present application, the inner end of the second sipe 71 and the outer end of the second sipe 71 are respectively connected to the second longitudinal groove 2 and the third longitudinal groove 3. This arrangement can accelerate the response speed of the tire, improve drainage performance, and enhance wetland safety. In a specific embodiment, the second sipe 71 is an arc groove, and the air flow of the arc groove is longer, which has a better noise reduction effect.

[0031] In some embodiments of the present application, reference Figure 3 , a convex portion 72 is provided on the bottom wall of the second sipe 71, and one end of the convex portion 72 away from the bottom wall of the second sipe 71 does not exceed the central rib region 7. Specifically, the convex portion 72 is provided at the center of the second sipe 71, and extends from the bottom wall of the second sipe 71 to the bottom wall away from the second sipe 71 at the center of the second sipe 71, and the upper surface of the convex portion 72 is lower than the surface of the central rib region 7. The depth of both sides of the convex portion 72 is the depth of the second sipe 71, and the depth of the convex portion 72 is equal to the distance between the upper surface of the convex portion 72 and the surface of the central rib region 7. The second sipe 71 is shallow in the middle and deep on both sides, which can enhance the toughness and tear resistance of the tire and prevent the central rib region 7 from cracking when the tire rolls.

[0032] In some embodiments of the present application, the inner end of the second groove 81 is spaced apart from the third longitudinal groove 3, and the outer end of the second groove 81 is connected to the fourth longitudinal groove 4. The outer end of the second groove 81 is connected to the fourth longitudinal groove 4, and extends from the fourth longitudinal groove 4 toward the inner side of the outer rib area 8, and there is a spacing between the inner end of the second groove 81 and the third longitudinal groove 3. In other words, the second groove 81 does not penetrate the outer rib area 8, and an air block is formed between the inner end of the second groove 81 and the outer rib area 8 to reduce noise, and the outer end of the second groove 81 is connected to the fourth longitudinal groove 4, which can improve drainage performance, enhance grip, and shorten braking distance.

[0033] In some embodiments of the present application, the depth of the first groove 51 gradually increases from the inside to the outside, and the depth of the third groove 91 gradually decreases. Taking the left side of the tire as the inside and the right side of the tire as the outside as an example, the first groove 51 extends from the right side to the left side in the inner shoulder area 5, and the depth of the first groove 51 gradually decreases; the third groove 91 extends from the left side to the right side in the outer shoulder area 9, and the depth of the third groove 91 gradually decreases, thereby improving the drainage performance of the tire.

[0034] In some embodiments of the present application, the outer end of the first groove 51 is spaced apart from the first longitudinal groove 1 and has a first distance, the inner end of the third groove 91 is spaced apart from the fourth longitudinal groove 4 and has a second distance, and the first distance is less than the second distance. That is, the outer end of the first groove 51 is not connected to the first longitudinal groove 1, and the inner end of the third groove 91 is not connected to the fourth longitudinal groove 4. The width of the first groove and the width of the third groove are smaller than the grooves on the shoulder of the existing tire of the same type. 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. In addition, the width of the first groove 51 and the third groove 91 is narrow, which can reduce the noise generated by the pumping effect during rolling and improve driving comfort. The first distance is smaller than the second distance, that is, the flat and smooth surface of the outer shoulder area 9 is larger than the flat and smooth surface of the inner shoulder area 5, so that the outer side of the tire has better grip. The length of the first groove 51 is larger than the length of the third groove 91. The first groove 51 with a longer inner side can improve the drainage performance of the tire, and the third groove 91 with a shorter outer side can enhance the grip of the tire.

[0035] 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 51 is respectively provided in the inner shoulder area 5, and a third pattern groove 91 is provided in the outer shoulder area 9, so as to improve the drainage performance and grip of the tire on a wet road surface; 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 sipes 61, second sipes 71 and second pattern grooves 81 are provided in the rib area. When the tire is pressed on the ground, the first sipes 61, the second sipes 71 and the second pattern grooves 81 can destroy the water film on the road surface, improve the drainage performance, and increase the wetland safety. The first sipes 61, the second sipes 71 and the second pattern grooves 81 are designed to be of various numbers and types, so as to divide the tire into a plurality of small areas, and partitions are formed between each small area. The air is blocked between the small areas, and the noise generated by air squeezing is reduced, thereby achieving noise reduction.

[0036] 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 grooves, wherein the plurality of first grooves are arranged at intervals along the circumference of the tire; An inner rib region has a plurality of first sipes, wherein the plurality of first sipes are arranged at intervals along the circumference 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; An outer rib region has a plurality of second grooves, wherein the plurality of second grooves are arranged at intervals along the circumference of the tire; An outer shoulder region has a plurality of third grooves, wherein the plurality of third grooves are arranged at intervals along the circumference of the tire; The type of the first sipe, the type of the second sipe and the type of the second groove are different.

2. The tire according to claim 1, characterized in that The extension direction of the first sipe is inclined relative to the axial direction of the tire, the extension direction of the second sipe is inclined relative to the axial direction of the tire, and the extension direction of the second groove is inclined relative to the axial direction of the tire.

3. The tire according to claim 1, characterized in that The width of the fourth longitudinal groove is smaller than the width of any one of the first longitudinal groove, the second longitudinal groove, and the third longitudinal groove.

4. The tire according to claim 1, characterized in that The first sipe includes a first sub-sipe and a second sub-sipe, the first sub-sipe and the second sub-sipe are arranged at intervals along the circumferential direction of the tire, and the first sub-sipe and the second sub-sipe are arranged at intervals along a direction from inside to outside.

5. The tire according to claim 4, characterized in that The inner end of the first sub-knife groove is communicated with the first longitudinal groove, and the outer end of the second sub-knife groove is communicated with the second longitudinal groove.

6. The tire according to claim 1, characterized in that An inner end of the second knife groove and an outer end of the second knife groove are communicated with the second longitudinal groove and the third longitudinal groove, respectively.

7. The tire according to claim 1, characterized in that The inner end of the second groove is spaced apart from the third longitudinal groove, and the outer end of the second groove is communicated with the fourth longitudinal groove.

8. The tire according to claim 1, characterized in that A convex portion is disposed on the bottom wall of the second knife groove, and an end of the convex portion away from the bottom wall of the second knife groove does not exceed the central rib area.

9. The tire according to claim 1, characterized in that Along the direction from inside to outside, the depth of the first groove gradually increases, and the depth of the third groove gradually decreases.

10. The tire according to claim 1, wherein: The outer end of the first groove is spaced apart from the first longitudinal groove at a first distance, the inner end of the third groove is spaced apart from the fourth longitudinal groove at a second distance, and the first distance is smaller than the second distance.

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