Snowfield radial tire with low noise and high slippery performance

Abstract

The invention relates to the technical field of tires, and particularly discloses a low-noise and high-slippery-performance snowfield radial tire which comprises a central pattern part and tire shoulder pattern parts symmetrically arranged along the center line of the central pattern part, and longitudinal grooves are formed between the central pattern part and the tire shoulder pattern parts; the central pattern part comprises a plurality of arrowhead-shaped central pattern blocks and V-shaped grooves formed among the plurality of central pattern blocks, and each central pattern block is provided with a first transverse cutter box steel sheet and an inclined groove group communicated with the V-shaped grooves; the tire shoulder pattern part comprises a plurality of tire shoulder pattern blocks and transverse grooves formed among the plurality of tire shoulder pattern blocks, and second transverse cutter groove steel sheets are arranged on the tire shoulder pattern blocks; the first transverse cutter box steel sheet and the second transverse cutter box steel sheet are of a 3D structure. On the basis of ensuring the snowfield performance, the wet and slippery performance 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, and more specifically, to a snow radial tire with low noise and high wet slip performance. Background Art

[0002] my country has a vast territory, a large latitude and longitude, and a large climate difference between the north and the south. The temperature in the south is higher, the rainy season lasts longer, and even in winter, the temperature rarely drops below 0 degrees. However, in the northwest of my country, the temperature difference between the four seasons is large. The weather in winter is low, the snowfall is large, and there is often snow on the road. In order to ensure driving safety, it is necessary to use suitable tires to cope with such road conditions. Under low temperature conditions, the grip of summer tires decreases significantly due to their tread formula and pattern design. There are great safety hazards on icy and snowy roads in winter. In recent years, with the development of the economy and the improvement of safety awareness, more and more car owners have begun to consciously replace their tires with snow tires in winter to cope with the snow on the road in winter and improve winter driving safety.

[0003] However, in order to ensure safety performance on snowy and icy roads, snow tires use special patterns, more steel plates, and deeper grooves, which makes them noisier than ordinary summer tires and all-season tires. With the improvement of living standards, car owners have higher and higher requirements for comfort and noise during travel, and noise is one of the key indicators affecting vehicle comfort. The main noise of the vehicle comes from the engine and tires. After replacing winter tires in winter, the noise of the vehicle is louder than that of summer tires, causing complaints from car owners. In addition, many cities will use snow melting agents on the road after snowfall to reduce snow on the road, resulting in water accumulation on urban roads. Most snow tires pay more attention to safety performance on snowy and icy roads, but ignore the safety of water accumulation on the road after the snow melts. Summary of the invention

[0004] The present invention provides a low-noise and high-wet-slip performance snow radial tire, which is used to solve the problem of high noise and poor wet-slip performance of snow radial tires in the prior art. It includes a central pattern portion and shoulder pattern portions symmetrically arranged along the center line of the central pattern portion, and a longitudinal groove is arranged between the central pattern portion and the shoulder pattern portion;

[0005] The central pattern portion includes a plurality of arrow-shaped central pattern blocks and V-shaped grooves arranged between the plurality of central pattern blocks, wherein the central pattern blocks are provided with a first transverse sipe steel sheet and an oblique groove group connecting the V-shaped grooves;

[0006] The shoulder pattern portion 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 sipe steel sheets;

[0007] The first transverse knife groove steel sheet and the second transverse knife groove steel sheet are 3D stereoscopic structures.

[0008] Furthermore, two non-through oblique grooves are formed on the central pattern block, and the two non-through oblique grooves are staggeredly arranged on both sides of the central pattern block.

[0009] Furthermore, it also includes a connecting steel sheet group, wherein the connecting steel sheet group includes a first connecting steel sheet and a second connecting steel sheet;

[0010] The first connecting steel sheet is located at the central pattern block, and the first connecting steel sheet is vertically arranged between the two first transverse sipe steel sheets;

[0011] The second connecting steel sheet is located at the shoulder tread block, and the second connecting steel sheet is cross-arranged with the second transverse sipe steel sheet.

[0012] Further, the oblique groove group includes two first oblique grooves, the two first oblique grooves are staggeredly arranged on the outer side of the central pattern block, the first oblique groove is inclined from the front end to the rear end of the central pattern block, and the angle between the first oblique groove and the center line of the central pattern portion is in the range of 15° to 20°;

[0013] The width of the first oblique groove from the starting end to the ending end is gradually widened from narrow to wide, and there is the following relationship between the starting end width H1 and the ending end width H2 of the first oblique groove: 1.5H1≤H2, the width range of the first oblique groove is 0.4mm~4mm, and the depth is 2mm.

[0014] Further, the oblique groove group includes two second oblique grooves, the two second oblique grooves are arranged inside the first oblique groove, and the distance L1 from the second oblique groove to the first oblique groove and the length L2 of the central pattern block have the following relationship: L1≥1 / 5L2;

[0015] The width of the second oblique groove from the starting end to the ending end is gradually widened from narrow to wide, and there is the following relationship between the starting end width H3 and the ending end width H4 of the second oblique groove: 1.1H3≤H4, the width range of the second oblique groove is 2mm~6mm, and the depth is 2mm.

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

[0017] There is the following relationship 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] Furthermore, the V-shaped angle of the V-shaped groove is in the range of 100° to 160°.

[0019] Furthermore, the angle between the non-through oblique groove and the center line of the central pattern portion is 10° to 70°.

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

[0021] Furthermore, 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 beneficial effects of the present invention are:

[0023] By applying the above technical scheme, the present invention optimizes the pattern shape, adopts irregular pattern arrangement, optimizes the shape and depth of the tread groove, and adopts a zigzag 3D stereoscopic knife-groove steel sheet design. Compared with the existing similar types and specifications, the present invention can effectively improve the wet performance of the tire and reduce the tire noise while ensuring the snow performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 The overall structure of a low-noise and high-wet-slip performance snow radial tire proposed in an embodiment of the present invention is shown;

[0026] Figure 2 The schematic diagram of the structure of the central tread block of a snow radial tire with low noise and high wet slip performance proposed in an embodiment of the present invention is shown.

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

[0028] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0029] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

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

[0031] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0032] The present application provides a snow radial tire with low noise and high wet slip performance, such as Figure 1-2 As shown, it includes a central pattern portion and a shoulder pattern portion symmetrically arranged along the center line of the central pattern portion, and a longitudinal groove 3 is arranged between the central pattern portion and the shoulder pattern portion; the central pattern portion includes a plurality of arrow-shaped central pattern blocks 11 and a V-shaped groove 12 arranged between the plurality of central pattern blocks 11, and a first transverse knife groove steel sheet 13 and an oblique groove group connecting the V-shaped groove 12 are arranged on the central pattern block 11; the shoulder pattern portion includes a plurality of shoulder pattern blocks 21 and a transverse groove 22 arranged between the plurality of shoulder pattern blocks 21, and a second transverse knife groove steel sheet 23 is arranged on the shoulder pattern block 21; the first transverse knife groove steel sheet 13 and the second transverse knife groove steel sheet 23 are 3D stereoscopic structures.

[0033] In this embodiment, the oblique groove group is obliquely opened on the central pattern block 11 and the V-shaped groove 12 passes through the central pattern blocks 11, which can break the water film when the tire touches the ground, provide the tire with water and snow discharge performance while reducing noise. By using a zigzag 3D stereoscopic knife-grooved steel sheet, the pattern rigidity is balanced, and the water film on the wet road surface is destroyed, thereby improving the wet performance of the tire.

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

[0035] In this embodiment, a non-through oblique groove 15 is opened on each side of the middle of the central pattern block 11, and the two non-through oblique grooves 15 are staggered. By designing the non-through oblique grooves 15, the pattern rigidity can be improved, the tire grip can be improved, and the noise can be blocked at the same time, effectively reducing the tire noise.

[0036] In some embodiments of the present application, a connecting steel plate group is also included, and the connecting steel plate group includes a first connecting steel plate 16 and a second connecting steel plate 24; the first connecting steel plate 16 is located at the central tread block 11, and the first connecting steel plate 16 is vertically arranged between the two first transverse slit steel plates 13; the second connecting steel plate 24 is located at the shoulder tread block 21, and the second connecting steel plate 24 is cross-arranged with the second transverse slit steel plate 23.

[0037] In this embodiment, by combining the connecting steel sheet and the transverse slit steel sheet, the rigidity of the tire tread blocks is balanced, the tread is made softer, and the contact area of ​​the tread is increased, which can effectively ensure the handling performance of the vehicle when turning.

[0038] In some embodiments of the present application, the oblique groove group includes two first oblique grooves 141, and the two first oblique grooves 141 are staggered on the outside of the central pattern block 11, and the first oblique groove 141 is inclined from the front end to the rear end of the central pattern block 11, and the angle between the first oblique groove 141 and the center line of the central pattern portion is in the range of 15° to 20°; the width from the starting end to the ending end of the first oblique groove 141 adopts a gradual widening design from narrow to wide, and there is the following relationship between the starting end width H1 and the ending end width H2 of the first oblique groove 141: 1.5H1≤H2, the width range of the first oblique groove 141 is 0.4mm~4mm, and the depth is 2mm.

[0039] In this embodiment, the first oblique groove 141 extends from the outer front end to the inner rear end of the central pattern block, and the first oblique grooves 141 on both sides are staggered, and the acute angle formed with the center line of the central pattern portion is preferably 15°, which effectively reduces tire noise and improves tire grip. By adopting a gradual widening design from narrow to wide, the first oblique groove 141 can quickly break the water film when the tire touches the ground, and when 1.5H1≤H2, the first oblique groove 141 has excellent drainage and snow removal capabilities, which greatly improves the wet performance of the tire.

[0040] In some embodiments of the present application, the oblique groove group includes two second oblique grooves 142, and the two second oblique grooves 142 are arranged on the inner side of the first oblique groove 141. The distance L1 from the second oblique groove 142 to the first oblique groove 141 and the length L2 of the central pattern block 11 have the following relationship: L1≥1 / 5L2; the width from the starting end to the ending end of the second oblique groove 142 adopts a gradual widening design from narrow to wide, and the starting end width H3 and the ending end width H4 of the second oblique groove 142 have the following relationship: 1.1H3≤H4, and the width range of the second oblique groove 142 is 2mm~6mm, and the depth is 2mm.

[0041] In this embodiment, the distance L1 from the second oblique groove 142 to the first oblique groove 141 is preferably 1 / 5L2, and the width of the second oblique groove 142 is greater than that of the first oblique groove 141. By providing the second oblique groove 142, the drainage and snow discharge capabilities of the tire are further improved, thereby increasing the tire's wet performance.

[0042] In some embodiments of the present application, there is the following relationship between the width H5 of the non-through oblique groove 15 and the width H6 of the V-shaped groove 12: H5<H6, the width range of the non-through oblique groove 15 is 2mm~7mm, and the depth range is 6mm~10mm; there is the following relationship between the width H5 of the non-through oblique groove 15 and the width H7 of the central pattern block 11: 1 / 9<H5 / H7<1 / 6.

[0043] In this embodiment, the width of the non-through oblique groove 15 is slightly smaller than the width of the V-shaped groove 12, and when 1 / 9<H5 / H7<1 / 6, the pattern rigidity of the tire can be maximized, the tire grip can be improved, and the noise can be sealed to effectively reduce the tire noise.

[0044] In some embodiments of the present application, the V-shaped angle of the V-shaped groove 12 is in the range of 100° to 160°.

[0045] In this embodiment, by using the V-shaped groove 12 with a large angle, the water and snow discharge of the tire is smoother, thereby improving the wet performance.

[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 portion is 10° to 70°.

[0047] In this embodiment, the inclination angle of the non-through oblique groove 15 is set to correspond 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 is in the range of 5 mm to 15 mm, and the depth is in the range of 4 mm to 8 mm.

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

[0050] In this embodiment, the longitudinal grooves 3 and the transverse grooves 22 with large widths can increase the water discharge capacity while ensuring the snow discharge function of the tire, thereby further improving the wet performance.

[0051] By applying the above technical scheme, the present invention includes a central pattern portion and a shoulder pattern portion symmetrically arranged along the center line of the central pattern portion, wherein a longitudinal groove 3 is arranged between the central pattern portion and the shoulder pattern portion; the central pattern portion includes a plurality of arrow-shaped central pattern blocks 11 and a V-shaped groove 12 arranged between the plurality of central pattern blocks 11, wherein the central pattern block 11 is provided with a first transverse sipe steel sheet 13 and an oblique groove group connecting the V-shaped groove 12; the shoulder pattern portion includes a plurality of shoulder pattern blocks 21 and a transverse groove 22 arranged between the plurality of shoulder pattern blocks 21, wherein the shoulder pattern block 21 is provided with a second transverse sipe steel sheet 23; 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 performance of the tire is effectively improved, and the tire noise can be reduced.

[0052] The above is only an example of implementation of the present invention, but it cannot be used to limit the scope of the present invention. Any structural changes made according to the present invention, as long as they do not lose the essence of the present invention, should be regarded as falling within the scope of protection of the present invention and being restricted. Technical personnel in the relevant technical field can clearly understand that for the convenience and simplicity of description, the specific working process and related instructions of the platform described above can refer to the corresponding process in the aforementioned platform embodiment, and will not be repeated here.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, 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 low-noise, high-wet-slip performance snow radial tire, characterized in that: It comprises a central pattern portion and a shoulder pattern portion symmetrically arranged along the center line of the central pattern portion, and a longitudinal groove (3) is arranged between the central pattern portion and the shoulder pattern portion; The central pattern portion comprises a plurality of arrow-shaped central pattern blocks (11) and V-shaped grooves (12) arranged between the plurality of central pattern blocks (11); the central pattern blocks (11) are provided with a first transverse sipe steel sheet (13) and an oblique groove group communicating with the V-shaped grooves (12); The shoulder pattern portion 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 blocks (21); The first transverse slit steel sheet (13) and the second transverse slit steel sheet (23) are 3D structures.

2. The low-noise and high-wet-slip performance snow radial tire according to claim 1, characterized in that: The central pattern block (11) is provided with two non-through oblique grooves (15), and the two non-through oblique grooves (15) are staggeredly arranged on both sides of the central pattern block (11).

3. The low-noise and high-wet-slip performance snow radial tire according to claim 1, characterized in that: It also includes a connecting steel sheet group, wherein the connecting steel sheet group includes a first connecting steel sheet (16) and a second connecting steel sheet (24); The first connecting steel sheet (16) is located on the central pattern 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 on the shoulder tread block (21), and the second connecting steel sheet (24) and the second transverse sipe steel sheet (23) are arranged crosswise.

4. The low-noise and high-wet-slip performance snow radial tire according to claim 1, characterized in that: The oblique groove group comprises two first oblique grooves (141), the two first oblique grooves (141) are staggeredly arranged on the outer side of the central pattern block (11), the first oblique grooves (141) are inclined from the front end to the rear end of the central pattern block (11), and the angle between the first oblique grooves (141) and the center line of the central pattern portion is in the range of 15° to 20°; The width of the first oblique groove (141) from the starting end to the ending end is designed to be gradually widened from narrow to wide, and there is the following relationship between the starting end width H1 and the ending end width H2 of the first oblique groove (141): 1.5H1≤H2, and the width range of the first oblique groove (141) is 0.4mm-4mm, and the depth is 2mm.

5. The low-noise and high-wet-slip performance snow radial tire according to claim 1, characterized in that: The oblique groove group comprises two second oblique grooves (142), the two second oblique grooves (142) are arranged inside the first oblique groove (141), and the distance L1 from the second oblique groove (142) to the first oblique groove (141) and the length L2 of the central pattern block (11) have the following relationship: L1≥1 / 5L2; The width of the second oblique groove (142) from the starting end to the ending end is designed to be gradually widened from narrow to wide, and there is the following relationship between the starting end width H3 and the ending end width H4 of the second oblique groove (142): 1.1H3≤H4, the width of the second oblique groove (142) is in the range of 2 mm to 6 mm, and the depth is 2 mm.

6. The low-noise and high-wet-slip performance snow radial tire according to claim 2, characterized in that: The width H5 of the non-through oblique groove (15) and the width H6 of the V-shaped groove (12) are in the following relationship: H5<H6, the width of the non-through oblique groove (15) is in the range of 2 mm to 7 mm, and the depth is in the range of 6 mm to 10 mm; There is the following relationship between the width H5 of the non-through oblique groove (15) and the width H7 of the central pattern block (11): 1 / 9<H5 / H7<1 / 6.

7. The low-noise and high-wet-slip performance snow radial tire according to claim 1, characterized in that: The V-shaped angle of the V-shaped groove (12) is in the range of 100° to 160°.

8. The low-noise and high-wet-skid performance snow radial tire according to claim 6, characterized in that: The angle between the non-through oblique groove (15) and the center line of the central pattern portion is 10° to 70°.

9. The low-noise and high-wet-slip performance snow radial tire according to claim 1, characterized in that: The width of the longitudinal groove (3) is in the range of 5 mm to 15 mm, and the depth is in the range of 4 mm to 8 mm.

10. The low-noise and high-wet-slip performance snow radial tire according to claim 1, characterized in that: The width of the transverse groove (22) ranges from 4 mm to 12 mm, and the depth ranges from 2 mm to 8 mm.

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