Tire pattern block, tire middle pattern rib and tire tread pattern

Abstract

The invention relates to a light truck guide wheel tire, in particular to a tire pattern block, a tire middle pattern rib and a tire tread pattern. The tread pattern comprises a tire crown pattern and tire shoulder pattern ribs located on the two sides of the tire crown pattern, and the tire crown pattern comprises a middle pattern rib and edge pattern ribs located on the two sides of the middle pattern rib; the middle pattern rib is formed by uniformly arranging the pattern blocks in the circumferential direction of the tire, the pattern blocks are polygonal pattern blocks, and each polygonal pattern block is formed by intersecting two pairs of mutually parallel Z-shaped fold lines. Through the special shape and angle design of the pattern blocks, the mileage of the tire is increased by 10%-12%; the driving performance of the tread pattern of the tire is ensured by utilizing the zigzag degree of the periodic triangular wave pattern groove and the size of the pattern block; in addition, due to the design angle of the pattern groove of the tire, the design of the stone discharging table and the arc-shaped design of the groove bottom for connecting the pattern groove wall and the stone discharging table, the tire has the characteristics of groove bottom crack resistance and stone clamping prevention.

Description

Technical Field

[0001] This invention relates to guide wheel tires for light trucks, and more particularly to a tire tread block, a tire center tread rib, and a tire tread pattern. Background Technology

[0002] With the rapid development of the automotive industry, tires, as a crucial component of automobiles, directly impact vehicle safety, economy, and comfort. This is especially true in the light truck sector, where tire requirements are even more stringent, demanding good traction, high mileage, resistance to rutting and cracking, and protection against stone trapping. Currently, light truck tires on the market, particularly directional tires, still have many shortcomings in overall performance, making it difficult to meet the demands of specialized markets like Indonesia.

[0003] In the existing technology, various tire tread design schemes have attempted to solve the above problems. For example, CN103507573B discloses a radial tire tread pattern structure, which includes at least one Z-shaped central tread groove arranged along the circumference of the tire tread and located at the center of the tread, and second main grooves located on both sides of the central tread groove and arranged along the circumference of the tire tread. Through specific tread block arrangement and sipe groove design, the tire's load-bearing and wear-resistant performance is improved to a certain extent, while also taking into account comprehensive performance such as wet performance and anti-stone trapping.

[0004] CN116749682A discloses a tire suitable for all wheel positions, whose tread pattern includes a central tread groove, and a first tread groove and a second tread groove are sequentially arranged on both sides of the tire shoulder direction from the central tread groove. All tread grooves are closed fold lines along the tire circumference. By optimizing the depth, width and saturation of the tread pattern, the tire is made suitable for both guiding and driving wheel positions.

[0005] CN216545566U discloses a high-mileage long-distance unidirectional drive tire tread pattern, including a first tread block, a first tread groove, a second tread block, a second tread groove, and a third tread block arranged circumferentially from the center tread groove to the tire shoulder, and lateral 2D grooves, 3D grooves, and baseball-shaped tread grooves are provided on the tread blocks to provide good heat dissipation and wet and snow performance.

[0006] However, the aforementioned existing technical solutions still have some shortcomings: First, the existing tire tread designs are generally outdated and difficult to adapt to the needs of modern light trucks; second, the problems of tires being prone to stone trapping and groove bottom cracking remain prominent, especially under harsh road conditions, which can seriously affect tire lifespan; third, the mileage performance of existing tires is insufficient and cannot meet the economic requirements of long-distance transportation; finally, the tread groove design and arrangement in the existing technology fail to balance multiple aspects such as driving performance, mileage, resistance to groove bottom cracking and stone trapping, resulting in poor market competitiveness.

[0007] Especially for specialized markets like Indonesia, the unique road conditions, climate, and usage habits place higher demands on dedicated directional tires for light trucks. Existing technologies struggle to simultaneously meet the demands for strong traction, high mileage, resistance to groove cracking, and stone trapping. Therefore, there is an urgent need to develop a new tire tread pattern structure. This involves innovative design techniques for tread block shapes and arrangements, heat dissipation groove design, rib design proportions, and optimized design of tread grooves and stone trapping platforms to comprehensively improve tire performance and meet market demands. Summary of the Invention

[0008] The demand for specialized directional tires for light trucks in specific markets like Indonesia is higher, and existing technologies struggle to simultaneously meet the requirements for high mileage, strong traction, resistance to groove cracking, and stone trapping. This invention provides a tire tread block, a tire center rib, and a tire tread pattern.

[0009] The specific technical solution of the present invention is as follows: A tire tread block, wherein the tread block is a polygonal tread block, the polygonal tread block is formed by two pairs of intersecting parallel Z-shaped lines, wherein the included angle of one pair of intersecting Z-shaped lines is 80°-100°, the included angle between the two ends and the middle side of one pair of parallel Z-shaped lines is 140°-150°, and the included angle between the two ends and the middle side of the other pair of parallel Z-shaped lines is 140°-145°.

[0010] The two pairs of parallel Z-shaped lines, one pair being ABCD and A'B'C'D', and the other pair being AMNA' and DM'N'D', intersect to form the line. Z-shaped lines ABCD and A'B'C'D' are parallel. Z-shaped line ABCD is formed by connecting line segments AB, BC, and CD in sequence. Z-shaped line A'B'C'D' is formed by connecting line segments A'B', B'C', and C'D in sequence. Line segments AB∥A'B', BC∥B'C', and CD∥C'D'. The angle α between line segments AB and BC is 140°. The angle θ between the Z-shaped broken line ABCD and the Z-shaped broken line AMNA' is 80°-100°. The Z-shaped broken lines AMNA' and DM'N'D' are parallel to each other. The Z-shaped broken line AMNA' is formed by connecting line segments AM, MN, and NA' in sequence. The Z-shaped broken line DM'N'D' is formed by connecting line segments DM', M'N', and N'D in sequence. Line segment AM∥line segment DM', line segment MN∥line segment M'N', and line segment NA'∥line segment N'D'. The angle β between line segment AM and line segment MN is 140°-145°. The angle γ between line segment AB and the horizontal direction is 20°-25°.

[0011] The lengths of line segments AB and A'B', BC and B'C', CD and C'D' are equal, and the lengths of line segments AB and CD are equal; the lengths of line segments AM and N'D', MN and M'N', NA' and DM' are equal, and the length of line segment AM is greater than the length of line segment NA'.

[0012] A tire center tread rib, wherein the center tread rib is formed by the above-mentioned tread blocks being evenly arranged along the tire circumference, and steel plate grooves formed by 2D steel sheets are provided between adjacent tread blocks, wherein the steel plate grooves are formed by Z-shaped zigzag lines between adjacent tread blocks forming mutually parallel Z-shaped zigzag steel plate grooves.

[0013] The steel plate groove adopts a uniform depth design, with a groove depth of 10-11mm and a groove width of 0.6-1mm, and the bottom is designed with an arc shape.

[0014] A tire tread pattern includes a crown pattern and shoulder ribs located on both sides of the crown pattern. Periodic triangular wave grooves are provided between the crown pattern and the shoulder ribs. The crown pattern includes a central rib and side ribs located on both sides of the central rib. Periodic triangular wave grooves are provided between the central rib and the side ribs. The two sides of the central rib and the side ribs form the groove walls of the periodic triangular wave grooves. The two sides of the periodic triangular wave grooves protrude outwards along the tire circumference. Points are connected in sequence to form two circumferentially extending straight lines L and L'. The two circumferentially extending straight lines L and L' are along the center line of the tire circumference as X. The middle tread rib is symmetrical about the center line X and is then translated by one unit to obtain the edge tread rib. The translation by one unit means translating from the inner convex point of the periodic triangular wave pattern groove to its adjacent outer convex point, or from the outer convex point of the periodic triangular wave pattern groove to its adjacent inner convex point. The shoulder tread rib has a circumferential integral structure, and the inner side of the shoulder tread rib (3) constitutes the outer groove wall of the periodic triangular wave pattern groove.

[0015] The bottom of the periodic triangular wave pattern groove is provided with stone-discharging platforms at even intervals along the circumference of the tire, and the bottom of the stone-discharging platforms is connected to the bottom of the two side walls of the periodic triangular wave pattern groove by an arc transition.

[0016] The width of the stone-laying platform is 1.5-2mm, and the depth is 1.8-2.2mm.

[0017] The width ratio of the middle tread rib to the edge tread rib and the shoulder tread rib is 1.05:1:1.3.

[0018] The angle between the groove wall and the center line of the periodic triangular wave pattern groove is 3.5°-7°; the angle between the periodic triangular wave pattern groove and the groove is 7°-14°. Compared with the prior art, the beneficial effects of the present invention are as follows: This invention provides a tire tread block, a central tread rib, and a tire tread pattern. This tire tread pattern is used for the guide wheel position. Through the special shape and angle design of the tread blocks, tire mileage is increased by 10%-12%. The traction of the tire tread pattern is ensured by utilizing the curvature of the periodic triangular wave tread grooves and the size of the tread blocks. Furthermore, the design angle of the tread grooves, the stone-removing platform design, and the arc-shaped design of the groove bottom connecting the tread groove walls and the stone-removing platform give the tire anti-groove bottom cracking and stone-entrapment prevention characteristics. This allows the tire to simultaneously meet the performance requirements of strong traction, high mileage, anti-groove bottom cracking, and stone-entrapment prevention, comprehensively improving the tire's overall performance to meet market demands. Attached Figure Description

[0019] Figure 1This is a schematic diagram of the unfolded tread pattern structure of the present invention.

[0020] Figure 2 This is a schematic diagram of the patterned block structure of the present invention.

[0021] Figure 3 This is a cross-sectional view of the periodic triangular wave patterned groove and stone-laying platform of the present invention.

[0022] Figure 4 This is a cross-sectional view of the heat dissipation groove of the present invention along the tire circumference.

[0023] Figure 5 This is a cross-sectional view of the periodic triangular wave pattern grooves and heat dissipation grooves of the present invention along the horizontal direction of the tire.

[0024] Figure 6 This is a cross-sectional view of the steel plate groove of the present invention.

[0025] Among them, 1 is the middle tread rib, 2 is the edge tread rib, 3 is the shoulder tread rib, 5 is the periodic triangular wave pattern groove, 6 is the stone-removing platform, 7 is the heat dissipation groove, 8 is the steel plate groove, and 9 is the tread block. Detailed Implementation

[0026] The present invention will now be described in detail with reference to specific embodiments. It should be noted that these embodiments are only used to further illustrate the present invention and should not be construed as limiting the scope of protection of the present invention. Those skilled in the art can make some non-essential improvements and adjustments based on the above description of the present invention, all of which fall within the scope of protection of the present invention. like Figure 1 As shown, a tire tread pattern includes a crown pattern and shoulder ribs 3 located on both sides of the crown pattern. Periodic triangular wave grooves 5 are provided between the crown pattern and the shoulder ribs 3. The crown pattern includes a central rib 1 and side ribs 2 located on both sides of the central rib 1. Periodic triangular wave grooves 5 are provided between the central rib 1 and the side ribs 2. The two sides of the central rib 1 and the side ribs 2 form the groove walls of the periodic triangular wave grooves 5. The shoulder ribs 3 have a circumferential integral structure, and the inner side of the shoulder ribs 3 forms the outer groove wall of the periodic triangular wave grooves 5.

[0027] The periodic triangular wave pattern groove 5 has heat dissipation grooves 7 spaced along the tire circumference at the outer edges of the groove walls on both sides; the bottom of the heat dissipation grooves 7 is connected to the groove walls on both sides of the periodic triangular wave pattern groove 5 by an arc C1; the heat dissipation grooves reduce the heat generation level of the tire crown.

[0028] The intermediate tread rib 1 is formed by tread blocks 9 evenly arranged along the circumference of the tire. Each tread block 9 is a polygonal tread block, formed by two pairs of intersecting parallel Z-shaped lines. The included angle of one pair of intersecting Z-shaped lines is 80°-100°, the included angle between the two ends and the middle edge of one pair of parallel Z-shaped lines is 140°-150°, and the included angle between the two ends and the middle edge of the other pair of parallel Z-shaped lines is 140°-145°. Steel plate grooves 8 formed by 2D steel sheets are provided between adjacent tread blocks 9. These grooves are formed by the parallel Z-shaped lines between adjacent tread blocks 9. Since the included angle between the two ends and the middle edge of the Z-shaped lines is equal, it indicates that the two ends of the Z-shaped lines are parallel.

[0029] Preferably, the two pairs of parallel Z-shaped broken lines are formed by the intersection of one pair of Z-shaped broken lines ABCD and A'B'C'D', and the other pair of Z-shaped broken lines AMNA' and DM'N'D'; the Z-shaped broken lines ABCD and A'B'C'D' are parallel to each other, and Z-shaped broken line ABCD is formed by connecting line segments AB, BC, and CD in sequence, and Z-shaped broken line A'B'C'D' is formed by connecting line segments A'B', B'C, and C'D in sequence, with line segment AB∥line segment A'B', line segment BC∥line segment B'C, line segment CD∥line segment C'D', and the angle α between line segments AB and BC is 14°. The angle θ between the Z-shaped broken line ABCD and the Z-shaped broken line AMNA' is 80°-100°. The Z-shaped broken line AMNA' and the Z-shaped broken line DM'N'D' are parallel to each other. The Z-shaped broken line AMNA' is formed by connecting line segments AM, MN, and NA' in sequence. The Z-shaped broken line DM'N'D' is formed by connecting line segments DM', M'N', and N'D in sequence. Line segment AM∥line segment DM', line segment MN∥line segment M'N', and line segment NA'∥line segment N'D'. The angle β between line segment AM and line segment MN is 140°-145°. The angle γ between line segment AB and the horizontal direction is 20°-25°.

[0030] The lengths of line segments AB and A'B', BC and B'C', CD and C'D' are equal, and the lengths of line segments AB and CD are equal; the lengths of line segments AM and N'D', MN and M'N', NA' and DM' are equal, and the length of line segment AM is greater than the length of line segment NA'.

[0031] Along the tire circumference, the two outer protrusions of the periodic triangular wave pattern groove 5 are connected in sequence to form two circumferentially extending straight lines L and L'. The two circumferentially extending straight lines L and L' are centered on the tire circumference centerline X. The middle pattern rib 1 is translated by one unit with the centerline X as the axis of symmetry to obtain the edge pattern rib 2. The translation by one unit means translating from the inner protrusion of the periodic triangular wave pattern groove 5 to its adjacent outer protrusion, or from the outer protrusion of the periodic triangular wave pattern groove 5 to its adjacent inner protrusion.

[0032] Periodic triangular wave tread grooves are characterized by a profile formed by two straight segments with constant slopes connected end-to-end to create a triangular unit. The geometric parameters (amplitude, period, slope, etc.) of each triangular unit remain consistent, and the overall design follows a periodic repetition pattern. Typically, tires used on guide wheels employ straight tread groove designs. However, considering the road conditions in the Indonesian market, the periodic triangular wave tread groove design provides the tire with stronger traction.

[0033] like Figure 4-5 As shown, the depth L2 of the heat dissipation groove 7 is 1.8-2.2mm, the width W1 is 0.6-1mm, and the bottom is designed with a C-curve. The depth ratio L1:L2 of the heat dissipation groove 7 to the periodic triangular wave pattern groove 5 is 0.5:1. The angle between the groove wall of the periodic triangular wave pattern groove 5 and the center line of the periodic triangular wave pattern groove is 3.5°-7°. The angle deg. of the periodic triangular wave pattern groove 5 is 7°-14°. The width ratio of the middle pattern rib 1 to the edge pattern rib 2 and the shoulder pattern rib 3 is 1.05:1:1.3.

[0034] like Figure 3 As shown, the bottom of the periodic triangular wave pattern groove 5 is provided with stone-removing platforms 6 at even intervals along the circumference of the tire. The bottom of the stone-removing platform 6 is connected to the bottom of the two sides of the groove wall of the periodic triangular wave pattern groove 5 through a C2 arc transition. The connection between the groove wall and the stone-removing platform adopts a two-segment arc design, which gives the tire anti-groove bottom cracking and anti-stone-entrapment performance.

[0035] The width W2 of the stone-laying platform 6 is 1.5-2mm, the depth L2 is 1.8-2.2mm, and the bottom C1 is designed as a straight line.

[0036] like Figure 6 As shown, the steel plate groove 8 adopts a uniform depth design, with a depth L1 of 10-11mm and a width W1 of 0.6-1mm. The bottom C is designed with an arc shape. The design of the steel plate groove optimizes the ground pressure distribution of the tread blocks and improves tire traction.

[0037] This invention provides a tire tread block, a central tread rib, and a tire tread pattern. The tire tread pattern is used for the guide wheel position and simultaneously meets the performance requirements of strong driving force, high mileage, resistance to groove bottom cracking, and anti-stone trapping, comprehensively improving the overall performance of the tire to adapt to special road conditions such as Indonesia.

[0038] For those skilled in the art, various corresponding modifications can be made based on the above technical solutions and concepts, and all such modifications should be included within the scope of protection of the claims of this invention.

Claims

1. A tire block characterized in that, The pattern block (9) is a polygonal pattern block formed by two pairs of mutually parallel Z-shaped fold lines intersecting, wherein the included angle of one pair of intersecting Z-shaped fold lines is 80-100°, the included angle of the two end edges and the middle edge of one pair of mutually parallel Z-shaped fold lines is 140-150°, and the included angle of the two end edges and the middle edge of the other pair of mutually parallel Z-shaped fold lines is 140-145°.

2. A tire block according to claim 1, wherein The two pairs of mutually parallel Z-shaped fold lines, one pair of Z-shaped fold lines is ABCD and A'B'C'D', and the other pair of Z-shaped fold lines is AMNA' and DM'N'D' intersecting; The Z-shaped fold line ABCD and the Z-shaped fold line A'B'C'D' are mutually parallel, the Z-shaped fold line ABCD is composed of the line segment AB, the line segment BC and the line segment CD connected in turn, the Z-shaped fold line A'B'C'D' is composed of the line segment A'B', the line segment B'C' and the line segment C'D' connected in turn, the line segment AB is parallel to the line segment A'B', the line segment BC is parallel to the line segment B'C', the line segment CD is parallel to the line segment C'D', the included angle α of the line segment AB and the line segment BC is 140-150°, and the included angle θ of the Z-shaped fold line ABCD and the Z-shaped fold line AMNA' is 80-100°, The Z-shaped fold line AMNA' and the Z-shaped fold line DM'N'D' are mutually parallel, the Z-shaped fold line AMNA' is composed of the line segment AM, the line segment MN and the line segment NA' connected in turn, the Z-shaped fold line DM'N'D' is composed of the line segment DM', the line segment M'N' and the line segment N'D' connected in turn, the line segment AM is parallel to the line segment DM', the line segment MN is parallel to the line segment M'N', and the line segment NA' is parallel to the line segment N'D'; the included angle β of the line segment AM and the line segment MN is 140-145°, The included angle γ of the line segment AB and the horizontal direction is 20-25°.

3. A tire block according to claim 2, wherein The lengths of the line segment AB and the line segment A'B', the line segment BC and the line segment B'C', and the line segment CD and the line segment C'D' are equal, and the lengths of the line segment AB and the line segment CD are equal. The lengths of the line segment AM and the line segment N'D', the line segment MN and the line segment M'N', and the line segment NA' and the line segment DM' are equal, and the length of the line segment AM is greater than the length of the line segment NA'.

4. A tire intermediate pattern rib characterized by, The middle pattern rib (1) is composed of the pattern block (9) of any one of claims 1-3 arranged uniformly in the tire circumferential direction, and a steel sheet groove (8) formed by a 2D steel sheet is arranged between adjacent pattern blocks (9), and the steel sheet groove (8) is composed of mutually parallel Z-shaped fold lines between the adjacent pattern blocks (9).

5. A mid-tread rib for a tire as in claim 4, wherein, The steel sheet groove (8) is designed with equal depth, the depth of the steel sheet groove (8) is 10-11mm, the width of the steel sheet groove (8) is 0.6-1mm, and the bottom is designed in an arc shape.

6. A tire tread pattern characterized in that, The tread pattern comprises a crown pattern and shoulder pattern ribs (3) located on both sides of the crown pattern, and a periodic triangular wave pattern groove (5) is arranged between the crown pattern and the shoulder pattern ribs (3), the crown pattern comprises a middle pattern rib (1) and a side pattern rib (2) located on both sides of the middle pattern rib (1), and a periodic triangular wave pattern groove (5) is arranged between the middle pattern rib (1) and the side pattern rib (2); the two side surfaces of the middle pattern rib (1) and the side pattern rib (2) form the groove walls of the periodic triangular wave pattern groove (5); Two circumferentially extending straight lines L and L' are sequentially connected by the two side outer convex points of the periodic triangular wave pattern groove (5) along the tire circumferential direction, and the midline of the two circumferentially extending straight lines L and L' along the tire circumferential direction is X, The middle pattern rib (1) is symmetrically arranged with the midline X as the symmetric axis, and the side pattern rib (2) is obtained by translating one unit, that is, translating from the inner convex point of the periodic triangular wave pattern groove (5) to the adjacent outer convex point, or translating from the outer convex point of the periodic triangular wave pattern groove (5) to the adjacent inner convex point; The shoulder pattern rib (3) is in an integral structure around the tire, and the inner side surface of the shoulder pattern rib (3) forms the outer groove wall of the periodic triangular wave pattern groove (5).

7. A tire tread pattern as claimed in claim 6, wherein The periodic triangular wave pattern groove (5) is uniformly spaced with a stone ejecting platform (6) along the tire circumferential direction, and the bottom of the stone ejecting platform (6) is connected to the bottom of the two side groove walls of the periodic triangular wave pattern groove (5) through an arc transition.

8. A tire tread pattern as claimed in claim 7, wherein, The width of the stone ejecting platform (6) is 1.5-2mm, and the depth is 1.8-2.2mm.

9. A tire tread pattern as claimed in claim 8, wherein, The width ratio of the middle pattern rib (1) to the side pattern rib (2) and the shoulder pattern rib (3) is 1.05:1:1.

3.

10. A tire tread pattern as claimed in claim 9, wherein, The included angle between the groove wall of the periodic triangular wave pattern groove (5) and the center line of the periodic triangular wave pattern groove is 3.5°-7°, and the included angle of the periodic triangular wave pattern groove (5) is 7°-14°.

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