CN115674956B - Snow tire pattern - Google Patents

Abstract

The present invention discloses a snow tire pattern, comprising a plurality of main groove patterns and secondary groove patterns arranged between adjacent main groove patterns, wherein the secondary groove pattern comprises a first inclined surface, a second inclined surface and a third inclined surface, wherein the first inclined surface is arranged near the opening position of the secondary groove pattern, the second inclined surface and the third inclined surface are arranged near the groove bottom position of the secondary groove pattern, the angle between the first inclined surface and the normal surface of the secondary groove pattern is a first angle, the angle between the second inclined surface and the normal surface of the secondary groove pattern is a second angle, and the angle between the third inclined surface and the normal surface of the secondary groove pattern is a third angle; the third angle is greater than the second angle, and the second angle is greater than the first angle. The snow tire pattern of the present invention is conducive to the tire fully biting the snow when driving on the snow, improving the tire's grip, and is also conducive to breaking up the snow in the pattern groove.

Description

Snow tire pattern

Technical Field

The invention relates to the technical field of tires, in particular to a snow tire pattern.

Background Art

In cold weather areas, vehicles are replaced with winter tires before winter to improve the vehicle's winter performance. In extremely cold weather conditions, when driving on snowy roads, the tires will bite the snow through the tire grooves to ensure grip. The more snow the tire grooves bite, the stronger the grip. If the snow in the tire grooves cannot be discharged or thrown out in time, if the vehicle continues to drive, the amount of snow the tire bites will drop sharply, and the grip will drop accordingly. The tire will slip, and driving safety cannot be guaranteed.

The tread of the tires currently on the market is distributed with multiple transverse patterns 02 (secondary grooves) and longitudinal patterns 01 (main grooves), as shown in Figures 1 and 3, which are pattern diagrams when the tire is unfolded. The main function of the transverse pattern 02 is to remove snow, and the main function of the longitudinal pattern 01 is to increase the grip of the wheel. The cross-section of the tire transverse pattern 02 in Figure 1 is U-shaped, and the cross-sectional view of the transverse pattern 02 at A-A is shown in Figure 2. The tire pattern of this structure has normal snow biting and snow removal on thin snow roads (snow thickness <20mm); on thick snow roads (snow thickness >20mm), the probability of difficulty in snow removal is high, and the tire is prone to slip. In order to improve the snow removal performance, there is also a tire in the prior art, as shown in Figure 3, whose transverse pattern 02 has a V-shaped groove cross-section, and its cross-section is shown in Figure 4. Compared with tires with U-shaped cross-section tire patterns, tires with V-shaped groove patterns have improved snow discharge performance. When the tire is running, the tread blocks are deformed, and the snow columns in the grooves are squeezed and discharged from the grooves through the angle of the groove walls. However, the volume of the V-shaped grooves is reduced, which affects the snow biting performance of the pattern.

Summary of the invention

In view of this, the present invention provides a snow tire pattern, which is beneficial for the tire to fully bite the snow when driving on the snow, improves the tire's grip, and is also beneficial for breaking up the snow in the pattern grooves.

To achieve the above object, the present invention provides the following technical solutions:

A snow tire pattern, comprising a plurality of main groove patterns and secondary groove patterns arranged between adjacent main groove patterns, wherein the secondary groove pattern comprises a first inclined surface, a second inclined surface and a third inclined surface, wherein the first inclined surface is arranged close to an opening position of the secondary groove pattern, the second inclined surface and the third inclined surface are arranged close to a groove bottom position of the secondary groove pattern, the angle between the first inclined surface and a normal surface of the secondary groove pattern is a first angle, the angle between the second inclined surface and the normal surface of the secondary groove pattern is a second angle, and the angle between the third inclined surface and the normal surface of the secondary groove pattern is a third angle;

The third angle is greater than the second angle, and the second angle is greater than the first angle.

Optionally, the second inclined surface and the third inclined surface are arranged at intervals along the extension direction of the auxiliary groove pattern.

Optionally, the bottom ends of the second inclined surface and the third inclined surface are flush with each other, and the top end of the second inclined surface is higher than the top end of the third inclined surface;

The bottom ends of the second and third inclined surfaces are arranged close to the groove bottom of the auxiliary groove pattern, and the top ends of the second and third inclined surfaces are connected to the first inclined surface.

Optionally, the side surface of the second slope is transitionally connected to the third slope via a fourth slope, and the fourth slope is inclined from an end connected to the third slope to an end connected to the top of the second slope.

Optionally, the second inclined surface and the third inclined surface are both isosceles trapezoidal surfaces, the top side length of the second inclined surface is smaller than the bottom side length of the second inclined surface, and the top side length of the third inclined surface is larger than the bottom side length of the third inclined surface.

Optionally, a process groove is provided at the bottom of the groove of the secondary groove pattern, and the process groove is provided along the extension direction of the secondary groove pattern.

Optionally, the distance between the top of the second inclined surface and the groove opening of the auxiliary groove pattern is not less than the total groove depth of the auxiliary groove pattern.

Optionally, the first angle ranges from 3° to 8°, the second angle ranges from 30° to 40°, and the third angle ranges from 50° to 60°.

Optionally, the angle difference between the second angle and the third angle is not less than 10°.

Optionally, the area of the fourth inclined surface is not less than 4% of the groove cross-sectional area of the auxiliary groove pattern.

It can be seen from the above technical scheme that the snow tire pattern provided by the present invention has a first slope of the secondary groove pattern used to bite snow and store snow pillars formed after biting snow, and the second and third slopes are deformed to squeeze the snow pillars, quickly crush the snow pillars and discharge them through the first slope, so as to achieve an excellent snow discharge effect of the pattern groove, which is beneficial for the tire to fully bite snow when driving at high speed on snowy ground, and improve the tire's grip. There is an angle difference between the second slope and the third slope, so that the thrust of the snow pillar in the secondary groove pattern when it is squeezed and stressed at the second slope is different from the thrust of the snow pillar when it is squeezed and stressed at the third slope, so that the thrust of the snow corresponding to the second slope and the thrust of the snow corresponding to the third slope form a shear force, which is beneficial to crushing the snow in the pattern groove and discharging the snow pillar in the groove from the pattern groove.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

FIG1 is a schematic diagram of a tire pattern development structure in an embodiment of the prior art;

Fig. 2 is a schematic diagram of the cross-sectional structure of the auxiliary groove pattern A-A in Fig. 1;

FIG3 is a schematic diagram of a tire pattern development structure in another embodiment of the prior art;

Fig. 4 is a schematic diagram of the cross-sectional structure of the auxiliary groove pattern at B-B in Fig. 3;

FIG5 is a schematic diagram of the structure of a snow tire pattern provided by an embodiment of the present invention;

FIG6 is a schematic diagram of the structure of a partially enlarged portion C in FIG5 ;

FIG7 is a schematic diagram of the cross-sectional structure of a snow tire pattern provided by an embodiment of the present invention;

Fig. 8 is a schematic cross-sectional view of the structure at D-D in Fig. 7;

FIG9 is a schematic diagram of the inclination angle structure of the first inclined surface, the second inclined surface and the third inclined surface of the snow tire pattern provided by an embodiment of the present invention;

FIG10 is a schematic structural diagram of the thrust exerted on the second inclined surface provided by an embodiment of the present invention;

FIG11 is a schematic diagram of the structure of the second inclined surface and the third inclined surface provided by an embodiment of the present invention;

FIG12 is a schematic diagram of the cross-sectional dimensions of a snow tire pattern provided by an embodiment of the present invention;

FIG13 is a schematic structural diagram of the groove cross-sectional area of the auxiliary groove pattern provided by an embodiment of the present invention.

in:

01, vertical pattern, 02, horizontal pattern,

1. Main groove pattern,

2. Secondary groove pattern,

201, second bevel, 202, third bevel, 203, fourth bevel, 204, first bevel, 205, process groove.

DETAILED DESCRIPTION

The invention discloses a snow tire pattern, which is beneficial for the tire to fully bite the snow when driving on snow, improves the tire's grip, and is also beneficial for breaking up the snow accumulated in the pattern grooves.

1 to 4 show the tread structure of a snow tire in the prior art.

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

Referring to Fig. 5 to Fig. 8, the snow tire pattern of the present invention comprises a plurality of main groove patterns 1 and auxiliary groove patterns 2, wherein the auxiliary groove patterns 2 are arranged between adjacent main groove patterns 1. The auxiliary groove pattern 2 comprises a first inclined surface 204, a second inclined surface 201 and a third inclined surface 202, wherein the first inclined surface 204 is arranged near the opening position of the auxiliary groove pattern 2, and the second inclined surface 201 and the third inclined surface 202 are arranged near the groove bottom position of the auxiliary groove pattern 2. The angle between the first inclined surface 204 and the normal surface of the auxiliary groove pattern 2 of the tire is a first angle A1, the angle between the second inclined surface 201 and the normal surface of the auxiliary groove pattern 2 of the tire is a second angle A2, and the angle between the third inclined surface 202 and the normal surface of the tire is a third angle A3, as shown in Fig. 9.

Among them, the third angle A3 is greater than the second angle A2, and the second angle A2 is greater than the first angle A1. The normal plane of the secondary groove pattern 2 is a vertical plane perpendicular to the center position of the groove bottom of the secondary groove pattern 2. Since the second angle A2 and the third angle A3 are at different angles, when the snow in the secondary groove pattern 2 is subjected to the extrusion force F, the thrust f generated on the second inclined surface 201 and the third inclined surface 202 is different, as shown in Figure 10, F represents the extrusion force, and f represents the thrust on the snow generated by the extrusion force F. The third angle A3 is greater than the second angle A2, thereby increasing the volume of the third inclined surface 202 corresponding to the groove position and improving the snow biting performance of the groove. A plurality of secondary groove patterns 2 are arranged between two adjacent main groove patterns 1 to improve the snow discharge performance.

In the snow tire pattern of the present invention, the first inclined surface 204 of the auxiliary groove pattern 2 is used to bite snow and store snow columns formed after biting snow, and the second inclined surface 201 and the third inclined surface 202 are deformed to squeeze the snow columns, and the snow columns are quickly crushed and discharged through the first inclined surface 204, so as to achieve an excellent snow discharge effect of the pattern groove, which is beneficial for the tire to fully bite snow when driving at high speed on snow, and improve the tire grip. There is an angle difference between the second inclined surface 201 and the third inclined surface 202, so that the thrust of the snow column in the auxiliary groove pattern 2 when it is squeezed and stressed at the second inclined surface 201 is different from the thrust of the third inclined surface 202 when it is squeezed and stressed, so that the thrust of the snow corresponding to the second inclined surface 201 and the thrust of the snow corresponding to the third inclined surface 202 form a shear force, which is beneficial to crushing the snow in the pattern groove and facilitating the discharge of the snow column in the groove from the pattern groove.

Specifically, the second inclined surface 201 and the third inclined surface 202 are arranged at intervals along the extension direction of the auxiliary groove pattern 2. Such a structural arrangement will break the snow column in the auxiliary groove pattern 2 into several sections, so that the snow accumulated in the groove can quickly leave the groove, and the groove can fully bite the snow when the tire rotates and touches the ground for the second time.

Furthermore, the bottom ends of the second inclined surface 201 and the third inclined surface 202 are flush, and the top end of the second inclined surface 201 is higher than the top end of the third inclined surface 202. The bottom ends of the second inclined surface 201 and the third inclined surface 202 are arranged close to the groove bottom of the secondary groove pattern 2, and the top ends of the second inclined surface 201 and the third inclined surface 202 are connected to the first inclined surface 204, so that the second inclined surface 201 and the third inclined surface 202 form planes with different slopes.

The side of the second slope 201 is transitionally connected to the third slope 202 through the fourth slope 203, and the fourth slope 203 is inclined from one end connected to the third slope 202 to one end connected to the top of the second slope 201, as shown in FIG8, so that the second slope 201 and the third slope 202 are both non-rectangular surfaces. Through the deformation and extrusion of the second slope 201, the third slope 202 and the fourth slope 203, the snow column in the groove is quickly crushed and discharged through the first slope 204, so as to achieve an excellent snow discharge effect of the groove, which is conducive to the tire fully biting the snow when driving at high speed on the snow.

Furthermore, the second inclined surface 201 and the third inclined surface 202 are both isosceles trapezoidal surfaces. Specifically, the top side length of the second inclined surface 201 is less than the bottom side length of the second inclined surface 201, and the top side length of the third inclined surface 202 is greater than the bottom side length of the third inclined surface 202. Such a structural setting is not only convenient for manufacturing, but also can improve the structural strength. Among them, the length range of the top side length W1 of the second inclined surface 201 is 1 to 5 mm, and the length range of the bottom side length W3 of the second inclined surface 201 is 3 to 7 mm. The length range of the top side length W2 of the third inclined surface 202 is 1 to 5 mm, and the length range of the bottom side length W4 of the third inclined surface 202 is 0.5 to 3.5 mm, as shown in Figure 11. The specific value needs to satisfy that the sum of the areas of the second inclined surface 201 and the third inclined surface 202 is not less than thirty-five percent of the area of the first inclined surface 204, so as to ensure that the tire has a good snow crushing and snow discharge capability.

The top, top end and top edge in the above embodiments are all ends close to the opening of the secondary groove pattern 2. It can be understood that the bottom, bottom end and bottom edge are all ends close to the groove bottom of the secondary groove pattern 2.

In order to facilitate the processing of the pattern in the secondary groove pattern 2 , a process groove 205 is provided at the bottom of the pattern groove of the secondary groove pattern 2 , and the process groove 205 is provided along the extension direction of the secondary groove pattern 2 .

The larger the snow column formed when the tire touches the ground, the stronger the grip. In order to ensure that there is sufficient groove volume to form the snow column, the distance D1 between the top of the second inclined surface 201 and the groove opening of the auxiliary groove pattern 2 is not less than half of the total groove depth GD of the auxiliary groove pattern 2, so as to ensure that the tire has good grip. The area of the fourth inclined surface 203 is determined by the heights D2 and D3 of its two oblique sides, where D2 is the height of the side where the fourth inclined surface 203 intersects with the first inclined surface 204, and D3 is the height of the side where the fourth inclined surface 203 intersects with the third inclined surface 202. Specifically, D2 ≥ 1.5 mm, D3 ≥ 1 mm, as shown in Figure 12. The area of the fourth inclined surface 203 is not less than 4% of the groove cross-sectional area E of the auxiliary groove pattern 2. The groove cross-sectional area E of the auxiliary groove pattern 2 is shown in Figure 13, which is the cross-sectional area passing through the position of the third inclined surface 202. The area of the fourth inclined surface 203 is greater than or equal to 4% of the groove cross-sectional area E of the secondary groove pattern 2 , thereby facilitating the fourth inclined surface 203 to quickly break up the snow column in the groove and divide it into multiple sections.

The first angle A1 is in the range of 3°-8°, the second angle A2 is in the range of 30°-40°, and the third angle A3 is in the range of 50°-60°. The first angle A1, the second angle A2 and the third angle A3 are shown in FIG9 .

In order to achieve a better snow-removing effect, the angle difference between the second angle A2 and the third angle A3 is not less than 10°, which is conducive to breaking up the snow in the tread groove.

The snow tire pattern of the present invention achieves a balance between snow biting and snow throwing performances through the optimized arrangement of the pattern grooves, thereby improving the snow performance of the tire.

In the description of this solution, it should be understood that the terms "upper", "lower", "vertical", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this solution.

In addition, 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. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this solution, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims (7)

1. A snow tire pattern, comprising a plurality of main groove patterns and auxiliary groove patterns arranged between adjacent main groove patterns, characterized in that the auxiliary groove pattern comprises a first inclined surface, a second inclined surface and a third inclined surface, the first inclined surface is arranged close to the opening position of the auxiliary groove pattern, the second inclined surface and the third inclined surface are arranged close to the groove bottom position of the auxiliary groove pattern, the angle between the first inclined surface and the normal surface of the auxiliary groove pattern is a first angle, the angle between the second inclined surface and the normal surface of the auxiliary groove pattern is a second angle, and the angle between the third inclined surface and the normal surface of the auxiliary groove pattern is a third angle; The third angle is greater than the second angle, and the second angle is greater than the first angle; The normal plane of the auxiliary groove pattern is a vertical plane perpendicular to the center position of the groove bottom of the auxiliary groove pattern; The bottom ends of the second inclined surface and the third inclined surface are flush with each other, and the top end of the second inclined surface is higher than the top end of the third inclined surface; The bottom ends of the second and third inclined surfaces are arranged close to the groove bottom of the auxiliary groove pattern, and the top ends of the second and third inclined surfaces are connected to the first inclined surface; The side surface of the second inclined surface is transitionally connected to the third inclined surface through a fourth inclined surface, and the fourth inclined surface is inclined from an end connected to the third inclined surface to an end connected to the top of the second inclined surface; The second inclined surface and the third inclined surface are both isosceles trapezoidal surfaces, the top side length of the second inclined surface is shorter than the bottom side length of the second inclined surface, and the top side length of the third inclined surface is longer than the bottom side length of the third inclined surface. 2. The snow tire pattern according to claim 1, characterized in that the second inclined surface and the third inclined surface are arranged at intervals along the extension direction of the auxiliary groove pattern. 3. The snow tire pattern according to claim 1 is characterized in that a process groove is provided at the bottom of the groove of the secondary groove pattern, and the process groove is provided along the extension direction of the secondary groove pattern. 4. The snow tire pattern according to claim 1, characterized in that the distance between the top of the second inclined surface and the groove opening of the auxiliary groove pattern is not less than half of the total groove depth of the auxiliary groove pattern. 5. The snow tire pattern according to claim 1, characterized in that the first angle is in the range of 3°-8°, the second angle is in the range of 30°-40°, and the third angle is in the range of 50°-60°. 6. The snow tire pattern according to claim 1, characterized in that the angle difference between the second angle and the third angle is not less than 10°. 7. The snow tire pattern according to claim 1, characterized in that the area of the fourth inclined surface is not less than 4% of the cross-sectional area of the groove of the auxiliary groove pattern.