Low-rolling-resistance wet-skid-resistant tire pattern and tire

Abstract

The utility model provides a low-rolling-resistance wet-skid-resistant tire pattern and a tire, belongs to the technical field of tire patterns, and solves the technical problems that the rolling resistance of the tire is reduced by improving a material formula and the wet-skid-resistant performance of the tire is reduced at the same time in the conventional tire product. The low-rolling-resistance wet-skid tire pattern comprises a plurality of longitudinal pattern main grooves extending in the circumferential direction of a tread and pattern blocks divided by the longitudinal pattern main grooves, the pattern blocks comprise middle pattern blocks and shoulder pattern blocks, the middle pattern blocks are provided with middle longitudinal pattern straight grooves and middle longitudinal pattern thin grooves, and the shoulder pattern blocks are provided with shoulder pattern thin grooves. The middle longitudinal pattern rill is formed by a plurality of first middle longitudinal pattern rill bodies and second middle longitudinal pattern rill bodies which are arranged alternately in a tangent mode, and one end of each first middle longitudinal pattern rill body is tangent to the corresponding second middle longitudinal pattern rill body and then extends to the corresponding middle longitudinal pattern straight groove. According to the low-rolling-resistance wet-skid-resistant tire pattern, the wet-skid-resistant performance and the drainage performance of a tire can be improved, and the rolling resistance is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of tire patterns, and in particular relates to a low rolling impedance wet-slip tire pattern and a tire. Background Art

[0002] With the rapid development of the truck and bus industry and the transportation sector, demand for high-performance tires is increasing. Tire performance directly impacts a vehicle's fuel efficiency, driving safety, and environmental performance. Fuel efficiency directly affects a vehicle's fuel consumption and operating costs. Fuel-efficient vehicles typically offer better economy and environmental performance, making fuel efficiency a key concern for vehicle owners. Tire rolling resistance is a key parameter affecting vehicle fuel efficiency. Lower rolling resistance indicates higher fuel efficiency. Therefore, reducing tire rolling resistance has become a key research topic for those skilled in the art.

[0003] Currently, existing tire products primarily reduce rolling resistance by improving material formulations. While this can reduce rolling resistance to a certain extent, it also reduces the tire's wet skid resistance. Therefore, how to provide a tire that reduces rolling resistance while also maintaining wet skid resistance is an urgent problem for those skilled in the art. Utility Model Content

[0004] The details of one or more embodiments of the present invention are set forth in the following drawings and description to make other features, objects, and advantages of the present application more readily apparent.

[0005] The utility model provides a low rolling resistance wet-slip tire pattern and a tire, which solves the technical problem that existing tire products reduce the rolling resistance of the tire by improving the material formula, but will reduce the tire's anti-slip performance. It can improve the tire's anti-slip performance and drainage performance and reduce rolling resistance.

[0006] On the one hand, the utility model discloses a low rolling impedance wet-skid tire pattern, comprising a plurality of longitudinal pattern main grooves extending along the circumferential direction of the tread and pattern blocks divided by the longitudinal pattern main grooves, the pattern blocks comprising a middle pattern block and a shoulder pattern block, wherein a middle longitudinal pattern straight groove and a middle longitudinal pattern fine groove are arranged on the middle pattern block, the middle longitudinal pattern fine groove is formed by tangently connecting a plurality of first middle longitudinal pattern fine grooves and second middle longitudinal pattern fine grooves that are alternately arranged, and one end of the first middle longitudinal pattern fine groove is tangent to the second middle longitudinal pattern fine groove and then extends to the middle longitudinal pattern straight groove.

[0007] In some embodiments, the first middle longitudinal pattern groove is an arc structure with a radius of R15mm-R25mm, and the second middle longitudinal pattern groove is an arc structure with a radius of R15mm-R25mm.

[0008] In some embodiments, shoulder longitudinal pattern grooves are provided on the shoulder pattern blocks, and the shoulder longitudinal pattern grooves are connected to adjacent longitudinal pattern main grooves through a plurality of shoulder inclined pattern grooves arranged at intervals, and chamfers are provided at the connections between the shoulder inclined pattern grooves and the longitudinal pattern main grooves.

[0009] In some embodiments, the shoulder inclined pattern groove is an arc-shaped structure with a radius of R70mm-R100mm, and the transverse width of the shoulder inclined pattern groove is 1 / 3 of the width of the shoulder pattern block.

[0010] In some embodiments, the area ratio of the middle pattern block to the shoulder pattern block is (1.35-1.45):1.

[0011] In some embodiments, the groove bottom of the longitudinal pattern main groove is a curved structure, and the groove bottom width is 2.5mm-3.5mm.

[0012] In some embodiments, transverse steel sheets are provided on both sides of the main groove of the longitudinal pattern, the spacing between adjacent transverse steel sheets is 6-10 mm, the width of the transverse steel sheet is 2-4 mm, and the depth of the transverse steel sheet is 4-6 mm.

[0013] Another aspect of the utility model provides a tire, on which the above-mentioned low rolling resistance wet-slip tire pattern is arranged.

[0014] In some embodiments, the tire's tread width TAW is 78%-85% of the nominal section width SW.

[0015] In some embodiments, a ratio of an upper sidewall height H1 to a lower sidewall height H2 of the tire is (0.97-1.04):1.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] (1) The middle tread block of the low rolling resistance wet skid tyre of the present invention is designed with a water ripple groove formed by a plurality of first middle longitudinal tread grooves and second middle longitudinal tread grooves alternately arranged with different radians, so as to improve the drainage performance of the tyre and enhance the anti-wet skid performance of the tyre.

[0018] (2) The shoulder tread blocks of the low rolling impedance wet-skid tire of the present invention are provided with shoulder longitudinal tread grooves and shoulder inclined tread grooves. The shoulder inclined tread grooves connect the shoulder longitudinal tread grooves with the adjacent longitudinal tread main grooves, thereby increasing the anti-wet-skid performance while avoiding the increase in noise caused by the excessive width of the shoulder inclined tread grooves. The chamfer design is adopted for the edges of the shoulder inclined tread grooves and the longitudinal grooves, which can better break the water film and more effectively squeeze out the water flow in the tread block area.

[0019] (3) The multiple longitudinal main grooves of the low rolling resistance wet tire pattern of the utility model divide the tread into a middle pattern block and a shoulder pattern block, and the area ratio of the middle pattern block to the shoulder pattern block is set to (1.35-1.45):1. The pattern saturation is above 80%, the pattern block is rigid, and the deformation during use is small, which reduces tire heat generation and hysteresis loss and reduces rolling resistance.

[0020] (4) The utility model tire adopts a new profile design by designing the tire running surface width and the upper and lower sidewall heights to make the crown ground pressure distribution more uniform. Compared with existing products, the tire crown deformation under load is reduced, the tire rolling heat generation is reduced, and the purpose of reducing rolling resistance is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. Among them:

[0022] Figure 1 A schematic diagram of the structure of a low rolling resistance wet tire pattern provided by an embodiment of the present utility model;

[0023] Figure 2 for Figure 1 Sectional view at A-A';

[0024] Figure 3 for Figure 1 Cross-sectional view at point B-B';

[0025] Figure 4 for Figure 1 Sectional view at C-C';

[0026] Figure 5 A longitudinal cross-sectional view of one embodiment of a middle longitudinal pattern fine groove;

[0027] Figure 6 A longitudinal cross-sectional view of another embodiment of a central longitudinal pattern groove

[0028] Figure 7 It is a longitudinal cross-sectional view of the chamfer of the shoulder inclined pattern groove;

[0029] Figure 8 This is a schematic diagram of the outline structure of the tire of the utility model;

[0030] In the accompanying drawings: 1, longitudinal pattern main groove, 2, middle pattern block, 3, shoulder pattern block, 4, middle longitudinal pattern straight groove, 5, middle longitudinal pattern fine groove, 51, first middle longitudinal pattern fine groove, 52, second middle longitudinal pattern fine groove, 6, shoulder longitudinal pattern fine groove, 7, shoulder inclined pattern fine groove, 71, chamfer, 8, transverse steel plate;

[0031] TAW: tread width of the tire;

[0032] SW: nominal section width of the tire;

[0033] H1: The height of the upper sidewall of the tire;

[0034] H2: The height of the lower sidewall of the tire;

[0035] h: the height of the tire's running surface;

[0036] C: tire ground and width;

[0037] TR: crown arc;

[0038] A1: inner shoulder point;

[0039] A2: The highest point of the tread;

[0040] A3: Outer shoulder point. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0042] In the description of the present invention, it should be understood that the terms "center", "transverse", "longitudinal", "upper", "lower", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention 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 operate in a specific orientation, and therefore cannot be understood as limiting the present invention. The terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", and "third" may explicitly or implicitly include one or more of such features. The term "longitudinal" refers to the direction in which the tire rolls; the term "transverse" refers to the direction perpendicular to the mid-plane of the tire.

[0043] The embodiment of the utility model provides a low rolling resistance wet-slip tire pattern and a tire, which can improve the tire's anti-slip performance and drainage performance, reduce tire heat generation and hysteresis loss, and reduce rolling resistance. Figure 1Schematic diagram of the structure of the low rolling resistance wet tire pattern according to an embodiment of the present invention. Figure 1 As shown, the low rolling resistance wet tire pattern includes three longitudinal main grooves 1 extending along the circumference of the tread. The longitudinal main grooves 1 are straight grooves with a variable curved groove bottom structure, providing good guiding ability. In a preferred embodiment, the groove bottom width of the longitudinal main grooves 1 is 2.5mm-3.5mm. The groove bottom of the longitudinal main grooves 1 is formed by two tangent arcs with alternating radii of R90mm-R180mm and opposite curvatures. For longitudinal cross-sectional views of the longitudinal main grooves 1 at different positions, please refer to the attached figure. Figure 2 -Attached Figure 4 As shown, the groove bottom pattern cross-section changes continuously along the groove bottom, improving drainage performance and enhancing the tire's wet-skid resistance. In a preferred embodiment, transverse steel blades 8 are provided on both sides of the longitudinal main groove 1. The spacing between adjacent transverse steel blades 8 is 6-10 mm, the width of the transverse steel blades 8 is 2-4 mm, and the depth is 4-6 mm. These blades effectively break up the water film when driving on wet roads, improving the tire's wet-skid resistance.

[0044] The three longitudinal main grooves 1 of the low rolling resistance wet tire pattern of the embodiment of the present invention divide the tread into shoulder pattern blocks 3 located on both sides of the tire shoulders and two middle pattern blocks 2 located between the two shoulder pattern blocks 3, wherein the area ratio of the middle pattern block 2 to the shoulder pattern block 3 is (1.35-1.45):1, and the pattern saturation is greater than 80%. Through the above-mentioned pattern structure design, the pattern blocks have high rigidity and small deformation during use, which is beneficial to reducing tire heat generation and hysteresis loss, and reducing rolling resistance.

[0045] The middle tread block 2 of the low rolling resistance wet tire pattern of the present invention is provided with a middle longitudinal pattern straight groove 4 and a middle longitudinal pattern fine groove 5. The middle longitudinal pattern fine groove 5 is located between the middle longitudinal pattern straight groove 4 and the longitudinal pattern main groove 1 located on the shoulder. The groove width of the middle longitudinal pattern fine groove 5 is 2-2.5mm and the depth is 3mm-5mm. The longitudinal cross-sectional view of the middle longitudinal pattern fine groove 5 is shown in the attached figure. Figure 5 As shown, it is formed by two circular arcs with opposite bending directions being tangent to each other. The middle longitudinal pattern groove 5 is formed by a plurality of first middle longitudinal pattern grooves 51 and second middle longitudinal pattern grooves 52 arranged alternately and being tangent to each other, presenting a water ripple curve structure, and one end of the first middle longitudinal pattern groove 51 is tangent to the second middle longitudinal pattern groove 52 and then extends to the middle longitudinal pattern straight groove 4. The first middle longitudinal pattern groove 51 is an arc structure with a radius of R15mm-R25mm, and the second middle longitudinal pattern groove 52 is an arc structure with a radius of R15mm-R25mm. In a preferred embodiment, the groove bottom of the middle longitudinal pattern groove 5 is a stepped structure, refer to the attached Figure 6 shown.

[0046] The shoulder longitudinal pattern grooves 6 are provided on the shoulder blocks 3 of the low rolling resistance wet-skid tire pattern of the present invention. The shoulder longitudinal pattern grooves 6 are connected to the adjacent longitudinal pattern main grooves 1 by a plurality of shoulder inclined pattern grooves 7 arranged at intervals. This structural design improves the wet-skid resistance while avoiding the increase of noise caused by the excessive width of the transverse grooves. Figure 7 As shown, the chamfer 71 at the junction of the shoulder inclined pattern groove 7 and the longitudinal pattern main groove 1 can better break up the water film and more effectively squeeze out the water flow from the pattern block area. In a preferred embodiment, the shoulder longitudinal pattern groove 6 has a width of 0.5-0.8mm and a depth of 2-3mm; the shoulder inclined pattern groove 7 has a width of 0.6-0.8mm and a depth of 2-3mm. The horizontal width of the shoulder inclined pattern groove 7 is 1 / 3 of the width of the shoulder pattern block 3, and the shoulder inclined pattern groove 7 has an arc-shaped structure with a radius of R70mm-R100mm.

[0047] The utility model also provides a tire, the tread of which is provided with the above-mentioned low rolling resistance wet tire pattern. Figure 8 As shown, the tire's running surface width TAW is 78%-85% of the nominal section width SW, and the ratio of the upper sidewall height H1 to the lower sidewall height H2 is (0.97-1.04):1. The tire's running surface height h is appropriately reduced compared to existing products. The tire crown consists of an arc and a tangent line. The designed crown arc radius TR is 80%-90% of the arc radius of the inner shoulder point A1, the highest point of the tread A2, and the outer shoulder point A3. The tangent point is located on the tread block. The tire's outer diameter is increased by 0.5% compared to existing designs, and the tire width C is designed to be one inch larger than existing products. The above-mentioned profile design of the tire of the utility model achieves more uniform crown ground pressure distribution, reduces crown deformation under load, and reduces tire rolling heat generation compared to existing tire products, thereby achieving the purpose of reducing rolling resistance.

[0048] The above embodiments are only used to illustrate the technical solution of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present invention. They should all be included in the scope of the technical solution for which protection is requested in the present invention.

Claims

1. A low rolling resistance wet tire pattern, characterized by: The tread comprises a plurality of longitudinal pattern main grooves extending along the circumferential direction of the tread and pattern blocks divided by the longitudinal pattern main grooves, wherein the pattern blocks comprise a central pattern block and a shoulder pattern block, wherein a central longitudinal pattern straight groove and a central longitudinal pattern fine groove are provided on the central pattern block, and the central longitudinal pattern fine groove is formed by tangently connecting a plurality of first central longitudinal pattern fine grooves and second central longitudinal pattern fine grooves which are alternately arranged, and one end of the first central longitudinal pattern fine groove is tangent to the second central longitudinal pattern fine groove and then extends to the central longitudinal pattern straight groove.

2. The low rolling resistance wet tire pattern according to claim 1, characterized in that: The first middle longitudinal pattern groove is an arc structure with a radius of R15mm-R25mm, and the second middle longitudinal pattern groove is an arc structure with a radius of R15mm-R25mm.

3. The low rolling resistance wet tire pattern according to claim 1, characterized in that: The shoulder pattern blocks are provided with shoulder longitudinal pattern grooves, which are connected to adjacent longitudinal pattern main grooves through a plurality of shoulder inclined pattern grooves arranged at intervals, and chamfers are provided at the connections between the shoulder inclined pattern grooves and the longitudinal pattern main grooves.

4. The low rolling resistance wet tire pattern according to claim 3, characterized in that: The shoulder inclined pattern groove is an arc structure with a radius of R70mm-R100mm, and the lateral width of the shoulder inclined pattern groove is 1 / 3 of the width of the shoulder pattern block.

5. The low rolling resistance wet tire pattern according to claim 1, characterized in that: The area ratio of the middle pattern block to the shoulder pattern block is (1.35-1.45):

1.

6. The low rolling resistance wet tire pattern according to claim 1, characterized in that: The bottom of the main groove of the longitudinal pattern is a curved structure with a groove bottom width of 2.5mm-3.5mm.

7. The low rolling resistance wet tire pattern according to claim 1, characterized in that: Transverse steel sheets are arranged on both sides of the main groove of the longitudinal pattern. The spacing between adjacent transverse steel sheets is 6-10 mm, the width of the transverse steel sheet is 2-4 mm, and the depth of the transverse steel sheet is 4-6 mm.

8. A tire, characterized in that: The low rolling resistance wet tire pattern according to any one of claims 1 to 7 is provided on the tire tread.

9. The tire according to claim 8, characterized in that: The tire's running surface width TAW is 78%-85% of the nominal section width SW.

10. The tire according to claim 8, characterized in that: The ratio of the upper sidewall height H1 to the lower sidewall height H2 of the tire is (0.97-1.04):1.

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