Snow radial tire with low noise and high wet skid performance

Abstract

The application relates to the field of tire technology and discloses a snow ground radial tire with low noise and high wet skid resistance, which comprises a central pattern part and shoulder pattern parts symmetrically arranged along the center line of the central pattern part, and longitudinal grooves are arranged between the central pattern part and the shoulder pattern parts; the central pattern part comprises a plurality of arrowhead-shaped central pattern blocks and V-shaped grooves arranged between the central pattern blocks, first transverse knife-groove steel sheets are arranged on the central pattern blocks, and oblique groove groups communicating with the V-shaped grooves are arranged on the central pattern blocks; the shoulder pattern part comprises a plurality of shoulder pattern blocks and transverse grooves arranged between the shoulder pattern blocks, second transverse knife-groove steel sheets are arranged on the shoulder pattern blocks; and the first transverse knife-groove steel sheets and the second transverse knife-groove steel sheets are 3D stereoscopic structures. On the basis of ensuring the snow ground performance, the wet skid resistance of the tire is effectively improved, and the tire noise can be reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of tire technology, more particularly, to a low-noise high-wet-slip snow radial tire. BACKGROUND

[0002] China is vast in territory, with a large span of latitude and longitude, and a large climate difference between the north and the south. The temperature in the southern region is relatively high, and the rainy season lasts for a long time. Even in winter, the temperature is rarely below 0 degrees. However, in the northwest region of China, the temperature difference between the four seasons is large, the weather is cold in winter, and the snowfall is large. The road surface is often covered with snow, and in order to ensure driving safety, appropriate tires need to be used to cope with such road conditions. The summer tire has a significant decrease in grip in low-temperature conditions due to its adopted tread formula and pattern design, and there is a great safety hazard on the icy and snowy road surface in winter. In recent years, with the development of economy and the improvement of safety awareness, more and more car owners consciously replace the tires with snow tires in winter to cope with the situation of road snow and improve the safety of driving in winter.

[0003] However, in order to ensure the safety performance of snow and ice, the snow tire adopts a special pattern, more steel sheets, and deeper grooves, resulting in a larger noise than the ordinary summer tire and all-season tire. With the improvement of living standards, car owners have higher and higher requirements for comfort and noise during travel. Noise is one of the key indicators affecting vehicle comfort, and the main noise of the vehicle comes from the engine and the tire. After replacing the winter tire in winter, the noise of the vehicle is larger than that of the summer tire, causing complaints from car owners. In addition, many cities use deicing agents on the road surface after snowfall to reduce road snow, resulting in water accumulation on the road surface after the melting of the accumulated snow on the road surface. Most snow tires pay more attention to the safety performance on snow and ice roads, and ignore the safety on the road surface with water after the melting of the accumulated snow. SUMMARY

[0004] The present application provides a low-noise high-wet-slip snow radial tire to solve the problem of large noise and poor wet-slip performance of the snow radial tire in the prior art. It comprises a central pattern part and a shoulder pattern part symmetrically arranged along the center line of the central pattern part, and a longitudinal groove is arranged between the central pattern part and the shoulder pattern part;

[0005] The central pattern part comprises a plurality of arrow-shaped central pattern blocks and V-shaped grooves arranged between the plurality of central pattern blocks, and the central pattern blocks are provided with first transverse knife groove steel sheets and oblique groove groups communicating with the V-shaped grooves;

[0006] The shoulder pattern part comprises a plurality of shoulder pattern blocks and transverse grooves arranged between the plurality of shoulder pattern blocks, and the shoulder pattern blocks are provided with second transverse knife groove steel sheets;

[0007] The first and second transverse slotted steel sheets are 3D structures.

[0008] Further, two non-penetrating oblique grooves are formed on the central block, and the two non-penetrating oblique grooves are staggered on both sides of the central block.

[0009] Further, the connecting steel sheet group comprises a first connecting steel sheet and a second connecting steel sheet.

[0010] The first connecting steel sheet is located in the central block, and the first connecting steel sheet is vertically arranged between the two first transverse slotted steel sheets.

[0011] The second connecting steel sheet is located in the shoulder block, and the second connecting steel sheet is arranged in cross with the second transverse slotted steel sheet.

[0012] Further, the oblique groove group comprises two first oblique grooves, the two first oblique grooves are arranged in dislocation on the outside of the central block, the first oblique groove is arranged in inclination from the front end to the tail end of the central block, and the included angle between the first oblique groove and the central block center line ranges from 15° to 20°.

[0013] The width of the first oblique groove from the starting end to the terminal end adopts a gradual widening design from narrow to wide, there is a relationship between the starting end width H1 and the terminal end width H2 of the first oblique groove as follows: 1.5H1≤H2, the width of the first oblique groove ranges from 0.4mm to 4mm, and the depth is 2mm.

[0014] Further, the oblique groove group comprises two second oblique grooves, the two second oblique grooves are arranged on the inside of the first oblique groove, and there is a relationship between the distance L1 of the second oblique groove to the first oblique groove and the length L2 of the central block as follows: L1≥1 / 5L2.

[0015] The width of the second oblique groove from the starting end to the terminal end adopts a gradual widening design from narrow to wide, there is a relationship between the starting end width H3 and the terminal end width H4 of the second oblique groove as follows: 1.1H3≤H4, the width of the second oblique groove ranges from 2mm to 6mm, and the depth is 2mm.

[0016] Further, there is a relationship between the width H5 of the non-penetrating oblique groove and the width H6 of the V-shaped groove as follows: H5<H6, the width of the non-penetrating oblique groove ranges from 2mm to 7mm, and the depth ranges from 6mm to 10mm.

[0017] The non-through oblique groove has a width H5, and the central pattern block has a width H7, and the following relationship exists between the width H5 of the non-through oblique groove and the width H7 of the central pattern block: 1 / 9 < H5 / H7 < 1 / 6.

[0018] Further, the V-shaped angle of the V-shaped groove ranges from 100° to 160°.

[0019] Further, the angle between the non-through oblique groove and the center line of the central pattern part ranges from 10° to 70°.

[0020] Further, the width of the longitudinal groove ranges from 5 mm to 15 mm, and the depth ranges from 4 mm to 8 mm.

[0021] Further, the width of the transverse groove ranges from 4 mm to 12 mm, and the depth ranges from 2 mm to 8 mm.

[0022] The present application has the following beneficial effects:

[0023] By applying the above technical solution, the present application optimizes the pattern shape, adopts irregular pattern arrangement, optimizes the shape and depth of the tread groove, and adopts a zigzag 3D solid blade groove design, so that compared with the same type and same specification of the prior art, the snow performance is ensured, the wet skid resistance of the tire is effectively improved, and the noise of the tire is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0025] Fig. 1 The overall structure diagram of the low-noise high-wet-skid-performance snow radial tire is shown.

[0026] Fig. 2 The structure diagram of the central pattern block of the low-noise high-wet-skid-performance snow radial tire is shown.

[0027] In the figure: 11, central pattern block; 12, V-shaped groove; 13, first transverse blade groove; 141, first oblique groove; 142, second oblique groove; 15, non-through oblique groove; 16, first connecting blade; 21, shoulder pattern block; 22, transverse groove; 23, second transverse blade groove; 24, second connecting blade; 3, longitudinal groove. DETAILED DESCRIPTION

[0028] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0029] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0030] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0031] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0032] This application provides a low-noise, high-performance wet-slip radial snow tire, such as... Figs. 1-2 As shown, the tire includes a central tread pattern and shoulder tread patterns symmetrically arranged along the centerline of the central tread pattern. A longitudinal groove 3 is provided between the central tread pattern and the shoulder tread pattern. The central tread pattern includes multiple arrow-shaped central tread blocks 11 and V-shaped grooves 12 disposed between the multiple central tread blocks 11. A first transverse sipe steel sheet 13 and an oblique groove group connecting the V-shaped grooves 12 are provided on the central tread blocks 11. The shoulder tread pattern includes multiple shoulder tread blocks 21 and transverse grooves 22 disposed between the multiple shoulder tread blocks 21. A second transverse sipe steel sheet 23 is provided on the shoulder tread blocks 21. The first transverse sipe steel sheet 13 and the second transverse sipe steel sheet 23 are 3D three-dimensional structures.

[0033] In the embodiment, the oblique groove group is obliquely arranged on the central pattern block 11 and penetrates the V-shaped groove 12 between the central pattern blocks 11, which can break the water film when the tire is in contact with the ground, provide the tire with the performance of draining water and snow, and reduce noise. By using the zigzag 3D solid lug, the pattern rigidity is balanced, the water film on the wet road surface is broken, and the wet performance of the tire is improved.

[0034] In some embodiments of the application, two non-penetrating oblique grooves 15 are arranged on the central pattern block 11, and the two non-penetrating oblique grooves 15 are staggered on both sides of the central pattern block 11.

[0035] In the embodiment, one non-penetrating oblique groove 15 is arranged at the middle position of one side of the central pattern block 11, and the two non-penetrating oblique grooves 15 are staggered. By designing the non-penetrating oblique groove 15, the pattern rigidity can be improved, the tire grip can be improved, and the noise can be closed, thereby effectively reducing the tire noise.

[0036] In some embodiments of the application, the connecting lug group is further included, the connecting lug group includes a first connecting lug 16 and a second connecting lug 24; the first connecting lug 16 is located on the central pattern block 11, and the first connecting lug 16 is vertically arranged between the two first transverse lug grooves 13; the second connecting lug 24 is located on the shoulder pattern block 21, and the second connecting lug 24 is crosswise arranged with the second transverse lug groove 23.

[0037] In the embodiment, by combining the connecting lug and the transverse lug groove, the pattern block rigidity of the tire is balanced, the pattern is softer, the pattern contact area is increased, and the handling performance of the vehicle during turning can be effectively ensured.

[0038] In some embodiments of the application, the oblique groove group includes two first oblique grooves 141, the two first oblique grooves 141 are staggered on the outside of the central pattern block 11, the first oblique groove 141 is obliquely arranged from the front end to the tail end of the central pattern block 11, and the included angle between the first oblique groove 141 and the central pattern center line is 15°-20°; the width of the first oblique groove 141 from the starting end to the ending end is gradually widened from narrow to wide, and the relationship between the starting end width H1 and the ending end width H2 of the first oblique groove 141 is as follows: 1.5H1≤H2, the width of the first oblique groove 141 is 0.4mm-4mm, and the depth is 2mm.

[0039] In the embodiment, the first inclined groove 141 extends from the outer front end to the inner tail end of the center block, and the first inclined grooves 141 on both sides are arranged in a staggered manner, and the acute angle formed by the first inclined grooves 141 and the center line of the central pattern part is preferably 15°, which effectively reduces tire noise and improves tire grip. By adopting the design of gradually widening from narrow to wide, the first inclined groove 141 can quickly break the water film when the tire is in contact with the ground, and when 1.5H1≤H2, the first inclined groove 141 has excellent water and snow removal capacity, which greatly improves the wet performance of the tire.

[0040] In some embodiments of the present application, the group of inclined grooves includes two second inclined grooves 142, which are arranged inside the first inclined groove 141, and the distance L1 from the second inclined groove 142 to the first inclined groove 141 and the length L2 of the central block 11 satisfy the following relationship: L1≥1 / 5L2; the width of the second inclined groove 142 from the starting end to the ending end adopts the design of gradually widening from narrow to wide, and the width H3 of the starting end and the width H4 of the ending end satisfy the following relationship: 1.1H3≤H4, the width of the second inclined groove 142 ranges from 2mm to 6mm, and the depth is 2mm.

[0041] In the embodiment, the distance L1 from the second inclined groove 142 to the first inclined groove 141 is preferably 1 / 5L2, and the width of the second inclined groove 142 is greater than that of the first inclined groove 141. By arranging the second inclined groove 142, the water and snow removal capacity of the tire is further improved, and the wet performance of the tire is increased.

[0042] In some embodiments of the present application, the width H5 of the non-through inclined groove 15 and the width H6 of the V-shaped groove 12 satisfy the following relationship: H5

[0043] In the embodiment, the width of the non-through inclined groove 15 is slightly smaller than the width of the V-shaped groove 12, and when 1 / 9

[0044] In some embodiments of the present application, the V-shaped angle of the V-shaped groove 12 ranges from 100° to 160°

[0045] In the embodiment, by using the V-shaped groove 12 with a large angle, the water and snow removal of the tire is more smooth, and the wet performance is improved.

[0046] In some embodiments of the present application, the angle between the non-through oblique groove 15 and the center line of the central pattern part is 10°-70°.

[0047] In the present embodiment, the inclination angle of the non-through oblique groove 15 is set corresponding to the V-shaped inclination angle of the V-shaped groove 12.

[0048] In some embodiments of the present application, the width of the longitudinal groove 3 ranges from 5mm to 15mm, and the depth ranges from 4mm to 8mm.

[0049] In some embodiments of the present application, the width of the transverse groove 22 ranges from 4mm to 12mm, and the depth ranges from 2mm to 8mm.

[0050] In the present embodiment, the longitudinal groove 3 and the transverse groove 22 with large width can have larger water drainage on the basis of ensuring the tire snow removal function, and further improve the wet skid resistance.

[0051] By applying the above technical scheme, the present application comprises a central pattern part and a shoulder pattern part symmetrically arranged along the center line of the central pattern part, a longitudinal groove 3 is arranged between the central pattern part and the shoulder pattern part; the central pattern part comprises a plurality of arrow-shaped central pattern blocks 11 and V-shaped grooves 12 arranged between the plurality of central pattern blocks 11, a first transverse sipe steel sheet 13 is arranged on the central pattern block 11, and an oblique groove group communicating with the V-shaped groove 12 is arranged; the shoulder pattern part comprises a plurality of shoulder pattern blocks 21 and transverse grooves 22 arranged between the plurality of shoulder pattern blocks 21, and a second transverse sipe steel sheet 23 is arranged on the shoulder pattern block 21; the first transverse sipe steel sheet 13 and the second transverse sipe steel sheet 23 are 3D stereoscopic structures. On the basis of ensuring the snow performance, the wet skid resistance of the tire is effectively improved, and the tire noise can be reduced.

[0052] The above description is only one embodiment of the present application, but cannot limit the scope of the present application, and any structural changes made according to the present application, as long as the essence of the present application is not lost, should be considered to fall within the scope of the present application and be restricted. The skilled person in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the platform and the related description described above can refer to the corresponding process in the foregoing platform embodiment, which will not be described here.

[0053] Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present application, and are not intended to limit the same; although the present application has been described in detail with reference to the foregoing examples, those of ordinary skill in the art will understand that they can still modify the technical solutions described in the foregoing examples, or make equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A snow radial tire having low noise and high wet skid performance, characterized in that, The tire pattern comprises a central pattern part and shoulder pattern parts symmetrically arranged along the center line of the central pattern part, and a longitudinal groove (3) is arranged between the central pattern part and the shoulder pattern parts; The central pattern part comprises a plurality of arrow-shaped central blocks (11) and V-shaped grooves (12) arranged between the plurality of central blocks (11), and the central blocks (11) are provided with first transverse sipe steel sheets (13) and oblique groove groups communicating with the V-shaped grooves (12); The shoulder pattern part comprises a plurality of shoulder blocks (21) and transverse grooves (22) arranged between the plurality of shoulder blocks (21), and the shoulder blocks (21) are provided with second transverse sipe steel sheets (23); The first transverse sipe steel sheet (13) and the second transverse sipe steel sheet (23) are 3D stereoscopic structures; Two non-penetrating oblique grooves (15) are formed in the central block (11), and the two non-penetrating oblique grooves (15) are staggered on both sides of the central block (11); The oblique groove group comprises two first oblique grooves (141), and the two first oblique grooves (141) are arranged on the outside of the central block (11), and the first oblique groove (141) is arranged obliquely from the front end to the tail end of the central block (11); The width of the first oblique groove (141) from the starting end to the ending end is gradually widened from narrow to wide; The oblique groove group comprises two second oblique grooves (142), and the two second oblique grooves (142) are arranged on the inside of the first oblique groove (141).

2. The low noise high wet skid snow radial tire of claim 1 wherein, It also comprises a connecting steel sheet group, which comprises a first connecting steel sheet (16) and a second connecting steel sheet (24); The first connecting steel sheet (16) is located in the central block (11), and the first connecting steel sheet (16) is vertically arranged between the two first transverse sipe steel sheets (13); The second connecting steel sheet (24) is located in the shoulder block (21), and the second connecting steel sheet (24) is arranged transversely with the second transverse sipe steel sheet (23).

3. The low noise high wet skid snow radial tire of claim 1 wherein, The included angle between the first oblique groove (141) and the center line of the central pattern part is 15°-20°; The relationship between the starting end width H1 and the ending end width H2 of the first oblique groove (141) is 1.5H1≤H2, the width of the first oblique groove (141) is 0.4mm-4mm, and the depth is 2mm.

4. The low noise high wet skid snow radial tire of claim 1 wherein, The distance L1 from the second oblique groove (142) to the first oblique groove (141) and the length L2 of the central block (11) satisfy the relationship L1≥1 / 5L2; The width of the second oblique groove (142) from the starting end to the ending end is gradually widened from narrow to wide, and the relationship between the starting end width H3 and the ending end width H4 of the second oblique groove (142) is 1.1H3≤H4, the width of the second oblique groove (142) is 2mm-6mm, and the depth is 2mm. ​ 5. The low noise high wet skid snow radial tire of claim 1 wherein, The width H5 of the non-penetrating oblique groove (15) and the width H6 of the V-shaped groove (12) have the following relationship: H5 < H6, the width of the non-penetrating oblique groove (15) ranges from 2mm to 7mm, and the depth ranges from 6mm to 10mm; The width H5 of the non-penetrating oblique groove (15) and the width H7 of the central pattern block (11) have the following relationship: 1 / 9 < H5 / H7 < 1 / 6.

6. The low noise high wet skid snow radial tire of claim 1 wherein, The V-shaped angle of the V-shaped groove (12) ranges from 100° to 160°.

7. The low noise high wet skid snow radial tire of claim 5 wherein, The angle between the non-penetrating oblique groove (15) and the center line of the central pattern part ranges from 10° to 70°.

8. The low noise high wet skid snow radial tire of claim 1 wherein, The width of the longitudinal groove (3) ranges from 5mm to 15mm, and the depth ranges from 4mm to 8mm.

9. The low noise high wet skid snow radial tire of claim 1 wherein, The width of the transverse groove (22) ranges from 4mm to 12mm, and the depth ranges from 2mm to 8mm.

Images