Tread pattern structure of tension motorcycle tire

Abstract

The invention discloses a tread pattern structure of a tension motorcycle tire, and relates to the technical field of tires, the tread pattern structure is used on a tread band, and the tread band sequentially comprises a sub-tread band A, a sub-tread band B and a sub-tread band C from the middle to the two sides in the transverse direction; the sub-tread band A comprises a sub-tread band A1 and a sub-tread band A2, the sub-tread band A1 is the central part of the sub-tread band A, and the sub-tread band A2 is the other central part of the sub-tread band A; the tread band is formed by combining a plurality of same tread modules T in the circumferential direction, and the tread modules T are alternately copied in a mirror image mode in the circumferential direction of the tire and have a preset circumferential length J; the tread module T comprises a first pattern groove, a second pattern groove, a third pattern groove and a fourth pattern groove which are arranged on the opposite sides relative to the equatorial line X-X of the tire. The shape, the width, the section and the like of the pattern groove are optimally designed, so that the use performance of the tire is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of tire technology, specifically to a tread pattern structure for a rally motorcycle tire. Background Technology

[0002] Tires are the only part of a vehicle (such as motorcycles and electric vehicles) that directly contacts the road surface. Their main functions are to bear loads, transmit the power needed for vehicle movement, ensure stable driving, and cope with different road conditions. Tire tread patterns have a significant impact on a vehicle's power / braking performance, water drainage, grip, driving comfort, and driving safety. At high speeds, vehicle tires need to simultaneously provide grip, water drainage, stability, and traction on different road surfaces. However, current tire tread patterns are relatively simple and generally suffer from the following problems: Poor performance: For medium and large displacement motorcycles, such as adventure motorcycles, a single tire tread pattern will affect the tire's grip and braking performance on the road, and thus cannot meet the needs of adventure motorcycles. Impact on driving safety: Small stones can easily get stuck in the existing tread grooves. Sharp stones may puncture the outer rubber layer of the tire, causing air leakage and affecting driving safety. Summary of the Invention

[0003] The first technical problem to be solved by the present invention is to provide a tread pattern structure for a rally motorcycle tire. By setting multiple scientific and aesthetically pleasing tread grooves and redesigning the shape, width, and cross-section of the tread grooves, the tire's performance is greatly improved, solving the problem of poor performance caused by the monotonous tread pattern of existing tires.

[0004] To solve the above-mentioned technical problems, the technical solution of the present invention is implemented as follows: A tread pattern structure for a rally motorcycle tire is used on a tread belt, which is applied to the rally motorcycle tire. The tire's land ratio is 70%-90%. The tread belt includes sub-tread belts A, B, and C in the transverse direction from the middle to both sides. Sub-tread belt A includes two sub-tread belts A1 that are symmetrical about the equator XX. The tread belt is composed of multiple identical tread modules T in the circumferential direction. The tread modules T are replicated along the circumferential direction of the tire and have a predetermined circumferential length J. The tread modules T include tread groove 1, tread groove 2, tread groove 3 and tread groove 4 arranged on opposite sides relative to the equator XX of the tire. Sub-tread belt A accounts for 35%-45% of the total axial width WT of the tread belt; sub-tread belt B accounts for 35%-45% of the total axial width WT of the tread belt.

[0005] Its core improvements are as follows: Pattern groove 1 is formed by the interconnection and combination of pattern groove 1a and pattern groove 1b; both pattern groove 1a and pattern groove 1b are defined on the tread band A1 of the tire. The width of the pattern groove one is limited to 5mm-10mm; The ratio of the length 30z of the tread groove one in the circumferential direction to the predetermined circumferential length J of the tread module T is 60%-70%; wherein, the ratio of the length 30az to 30z of the tread groove one a in the circumferential direction is 15%-25%, and the ratio of the length 30bz to 30z of the tread groove one b in the circumferential direction is 75%-85%. The ratio of the axial length 30h of the first tread groove to the predetermined axial length WT of the tread module T is 15%-20%; wherein, the ratio of the axial length 30ah of the first tread groove a to 30h is 5%-15%, and the ratio of the axial length 30bh of the first tread groove b to 30h is 5%-15%. The angle 30ajd between the pattern groove 1a and the equator XX is 35°-45°; the angle 30bjd between the pattern groove 1b and the equator XX is between 5°-15°.

[0006] The second tread groove is defined on the tread band B and the tread band C of the tire; The width of the pattern groove in pattern groove two is limited to 5mm-10mm; The ratio of the length 31z of the tread groove 2 in the circumferential direction to the predetermined circumferential length J of the tread module T is 10%-15%. The ratio of the axial length 31h of the second tread groove to the predetermined axial length WT of the tread module T is 20%-25%. The angle 31jd between the second patterned groove and the equator XX is 60°-70°.

[0007] The three tread grooves are defined on the tread band B and the tread band C of the tire; The width of the pattern groove three is limited to 5mm-10mm; The ratio of the circumferential length 32z of the tread groove three to the predetermined circumferential length J of the tread module T is 10%-20%. The ratio of the axial length 32h of the tread groove three to the predetermined axial length WT of the tread module T is 15%-25%. The angle 32jd between the three grooves and the equator XX is 35°-45°.

[0008] The four-patterned groove design has two options, with option one offering better drainage and option two providing better grip: Option 1: Pattern groove 4 is formed by the interconnection and combination of pattern groove 4a and pattern groove 4b; pattern groove 4a is limited on the sub-tread belt B and sub-tread belt C, and pattern groove 4b is limited on the sub-tread belt A1. The width of the pattern groove in pattern groove four is limited to 5mm-10mm; The ratio of the length 33z of the tread groove four in the circumferential direction to the predetermined circumferential length J of the tread module T is 10%-20%, wherein the ratio of the length 33az of the tread groove four a in the circumferential direction to 33z is 100%, and the ratio of the length 33bz of the tread groove four b in the circumferential direction to 33z is 86%-91%. The ratio of the axial length 33h of the tread groove four to the predetermined axial length WT of the tread module T is 52%-60%, wherein the ratio of the axial length 33ah to 33h of the tread groove foura is 65%-75%, and the ratio of the axial length 33ah to 33h of the tread groove fourb is 35%-42%. The angle 33ajd between the patterned groove 4a and the equator XX is 60°-70°; the angle 33bjd between the patterned groove 4b and the equator XX is 60°-70°.

[0009] Option 2: The fourth tread groove is composed of the fourth tread groove a and the fourth tread groove b, wherein the fourth tread groove a and the fourth tread groove b are arranged alternately; the fourth tread groove a is limited to the tread belt B and the tread belt C, and the fourth tread groove b is limited to the tread belt A1. The width of the pattern groove in pattern groove four is limited to 5mm-10mm; The ratio of the length 33z of the tread groove four in the circumferential direction to the predetermined circumferential length J of the tread module T is 10%-20%, wherein the ratio of the length 33az to 33z of the tread groove four a in the circumferential direction is 100%, and the ratio of the length 33bz to 33z of the tread groove four b in the circumferential direction is 78%-86%. The ratio of the axial length 33h of the tread groove four to the predetermined axial length WT of the tread module T is 52%-60%, wherein the ratio of the axial length 33ah to 33h of the tread groove foura is 62%-73%, and the ratio of the axial length 33ah to 33h of the tread groove fourb is 25%-30%. The angle 33ajd between the patterned groove 4a and the equator XX is 60°-70°; the angle 33bjd between the patterned groove 4b and the equator XX is 60°-70°.

[0010] The second technical problem to be solved by the present invention is to provide a tread pattern structure for a rally motorcycle tire. By further optimizing the cross-sectional shape of the tread grooves, the groove openings become narrower due to compression when the tread grooves come into contact with the wheel surface, making it less likely for stones to get stuck in the grooves, thus solving the problem of existing tires affecting driving safety due to stones getting stuck.

[0011] To solve the above-mentioned technical problems, the technical solution of the present invention is implemented as follows: Based on the above scheme, the cross-sectional shape of the tread groove on the tread module T is designed as a wedge-shaped dovetail with a narrow top and a wide bottom; and multiple protrusions are provided on the two side walls of the tread groove in a linear array along its length, wherein the surface of the protrusion is a circular arc surface.

[0012] By adopting the above solution, the grooves on the tire become narrower due to compression when they come into contact with the wheel surface, so stones are less likely to get stuck in the grooves; the protrusions can effectively block stones, so that the high-speed rotating tire will not reduce its grip and braking performance due to stones getting stuck.

[0013] After adopting the above technical solution, the beneficial effects of the present invention are: 1. Enhanced Performance: The tread module T includes three grooves (groove 1, groove 2, and groove 3) arranged on opposite sides relative to the tire's equator XX. These crisscrossing grooves greatly improve the tire's grip. Groove 4 offers two options for flexible application. The addition of groove 4 further enhances the tire's grip and stability, better meeting the needs of adventure motorcycles. 2. Driving safety: The cross-sectional shape of the tread grooves on the tread module T is a wedge-shaped dovetail with a narrow top and a wide bottom. When the tread grooves come into contact with the wheel surface, the groove openings are narrowed due to compression, so stones are less likely to get stuck in the grooves. Protrusions are set on both sides of the tread grooves. The protrusions can effectively block stones, so that the high-speed rotating tire will not reduce its grip and braking performance due to stones getting stuck. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a planar schematic diagram of the tire tread strip in Example 1; Figure 2 for Figure 1 A magnified view of a section of the central patterned groove 1; Figure 3 for Figure 1 Enlarged view of a section of the second central patterned groove; Figure 4 for Figure 1 A magnified view of a section of the central patterned groove three; Figure 5 for Figure 1 A magnified view of a section of the central patterned groove four; Figure 6 This is a cross-sectional view of the patterned groove in Example 1; Figure 7 This is a planar schematic diagram of the tire tread strip in Example 2; Figure 8 for Figure 7 A magnified view of a section of the central patterned groove four.

[0016] Attached reference numerals: 1-Tire; 2-Tread strip; 3-Tread groove; 30-Tread groove one; 31-Tread groove two; 32-Tread groove three; 33-Tread groove four. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Example 1, as Figure 1 As shown, a tread pattern structure for a rally motorcycle tire is used on a tread belt 2, which is applied to a rally motorcycle tire 1. The tire 1 has a land ratio of 70%-90%. The tread belt 2 includes sub-tread belts A, B, and C in the transverse direction from the middle to both sides. Sub-tread belt A includes two sub-tread belts A1 that are symmetrical about the equator X.

[0019] like Figure 1 As shown, the tread belt 2 is composed of multiple identical tread modules T in the circumferential direction. The tread modules T are replicated along the circumferential direction of the tire 1 and have a predetermined circumferential length J. The tread modules T include tread grooves 30, 31, 32 and 33 arranged on opposite sides relative to the equator XX of the tire 1.

[0020] Continue as Figure 1 As shown, the ratio of sub-tread belt A to the axial width WT of the entire tread belt 2 is 35%-45%; the ratio of sub-tread belt B to the axial width WT of the entire tread belt 2 is 35%-45%.

[0021] like Figure 2 As shown, the tread groove 30 is formed by the interconnection and combination of tread groove 30a and tread groove 30b; both tread groove 30a and tread groove 30b are defined on the tread band A1.

[0022] Continue as Figure 2 As shown, the width of the groove in the groove-30 is limited to 5mm-10mm.

[0023] Continue as Figure 2 As shown, the ratio of the length 30z of the tread groove 30 in the circumferential direction to the predetermined circumferential length J of the tread module T is 60%-70%; wherein, the ratio of the length 30az of the tread groove 30a in the circumferential direction to 30z is 15%-25%, and the ratio of the length 30bz of the tread groove 30b in the circumferential direction to 30z is 75%-85%.

[0024] Continue as Figure 2 As shown, the ratio of the axial length 30h of the tread groove 30 to the predetermined axial length WT of the tread module T is 15%-20%; wherein, the ratio of the axial length 30ah of the tread groove 30a to 30h is 5%-15%, and the ratio of the axial length 30bh of the tread groove 30b to 30h is 5%-15%.

[0025] Continue as Figure 2 As shown, the angle 30ajd between the pattern groove 30a and the equator XX is 35°-45°; the angle 30bjd between the pattern groove 30b and the equator XX is between 5°-15°.

[0026] like Figure 3 As shown, the tread groove 2 31 is defined on the tread band B and the tread band C.

[0027] Continue as Figure 3 As shown, the width of the pattern groove 2 31 is limited to 5mm-10mm.

[0028] Continue as Figure 3 As shown, the ratio of the length 31z of the tread groove 2 31 in the circumferential direction to the predetermined circumferential length J of the tread module T is 10%-15%.

[0029] Continue as Figure 3 As shown, the ratio of the axial length 31h of the tread groove 2 31 to the predetermined axial length WT of the tread module T is 20%-25%.

[0030] Continue as Figure 3As shown, the angle 31jd between the patterned groove 2 31 and the equator XX is 60°-70°.

[0031] like Figure 4 As shown, the tread groove 32 is defined on the tread band B and the tread band C.

[0032] Continue as Figure 4 As shown, the width of the groove in the three-dimensional groove is limited to 5mm-10mm.

[0033] Continue as Figure 4 As shown, the ratio of the length 32z of the tread groove 32 in the circumferential direction to the predetermined circumferential length J of the tread module T is 10%-20%.

[0034] Continue as Figure 4 As shown, the ratio of the axial length 32h of the tread groove 32 to the predetermined axial length WT of the tread module T is 15%-25%.

[0035] Continue as Figure 4 As shown, the angle 32jd between the three grooves 32 and the equator XX is 35°-45°.

[0036] like Figure 5 As shown, the tread groove 4 33 is formed by the interconnection and combination of tread groove 4 33a and tread groove 4 33b, which has better drainage performance; tread groove 4 33a is limited on the tread belt B and the tread belt C, and tread groove 4 33b is limited on the tread belt A1.

[0037] Continue as Figure 5 As shown, the width of the groove in the patterned groove 433 is limited to 5mm-10mm.

[0038] Continue as Figure 5 As shown, the ratio of the length 33z of the tread groove 33 in the circumferential direction to the predetermined circumferential length J of the tread module T is 10%-20%, wherein the ratio of the length 33az of the tread groove 33a in the circumferential direction to 33z is 100%, and the ratio of the length 33bz of the tread groove 33b in the circumferential direction to 33z is 86%-91%.

[0039] Continue as Figure 5 As shown, the ratio of the axial length 33h of the tread groove 33 to the predetermined axial length WT of the tread module T is 52%-60%, wherein the ratio of the axial length 33ah to 33h of the tread groove 33a is 65%-75%, and the ratio of the axial length 33ah to 33h of the tread groove 33b is 35%-42%.

[0040] Continue as Figure 5 As shown, the angle 33ajd between the four grooves 33a and the equator XX is 60°-70°; the angle 33bjd between the four grooves 33b and the equator XX is 60°-70°.

[0041] like Figure 6 As shown, the cross-sectional shape of the tread grooves on the tread module T is designed as a wedge-shaped dovetail with a narrow top and a wide bottom; and multiple protrusions are arranged linearly along the length of the tread grooves on both sides of the tread grooves, wherein the surface of the protrusions is an arc surface; when the tread grooves on the tire 1 come into contact with the wheel surface, the groove openings are narrowed due to compression, so stones are not easily stuck in the grooves; the protrusions can effectively block stones, so that the high-speed rotating tire 1 will not reduce its grip and braking performance due to stones getting stuck.

[0042] Example 2, as Figures 7 to 8 As shown, the difference between this embodiment and Embodiment 1 is only that, based on Embodiment 1, the tread groove 33, which is composed of interconnected tread grooves 33a and 33b, is replaced by a tread groove 33 composed of tread grooves 33a and 33b. This results in better grip. Tread grooves 33a and 33b are spaced apart. Tread groove 33a is defined on the tread belts B and C, and tread groove 33b is defined on the tread belt A1.

[0043] Continue as Figure 8 As shown, the width of the groove in the patterned groove 433 is limited to 5mm-10mm.

[0044] Continue as Figure 8 As shown, the ratio of the length 33z of the tread groove 33 in the circumferential direction to the predetermined circumferential length J of the tread module T is 10%-20%, wherein the ratio of the length 33az of the tread groove 33a in the circumferential direction to 33z is 100%, and the ratio of the length 33bz of the tread groove 33b in the circumferential direction to 33z is 78%-86%.

[0045] Continue as Figure 8 As shown, the ratio of the axial length 33h of the tread groove 33 to the predetermined axial length WT of the tread module T is 52%-60%, wherein the ratio of the axial length 33ah to 33h of the tread groove 33a is 62%-73%, and the ratio of the axial length 33ah to 33h of the tread groove 33b is 25%-30%.

[0046] Continue as Figure 8As shown, the angle 33ajd between the four grooves 33a and the equator XX is 60°-70°; the angle 33bjd between the four grooves 33b and the equator XX is 60°-70°.

[0047] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A tread pattern structure of a drag motorcycle tire, for a tread band, said tread band comprising in the transverse direction, in succession from the center to both sides, a sub-tread band A, a sub-tread band B and a sub-tread band C; said sub-tread band A comprising two sub-tread bands A1 symmetrical about the equator X-X; said tread band being composed of a plurality of identical tread modules T in the circumferential direction, said tread modules T being replicated along the circumferential direction of the tire and having a predetermined circumferential length J; said tread module T comprising a pattern groove one, a pattern groove two and a pattern groove three arranged on opposite sides relative to the equator X-X of the tire; characterized in that said pattern groove one being composed of a pattern groove one a and a pattern groove one b connected to each other; said pattern groove one a and said pattern groove one b are both defined on the sub-tread band A1; said pattern groove two is defined on the sub-tread band B and the sub-tread band C; said pattern groove three is defined on the sub-tread band B and the sub-tread band C.

2. A tread pattern structure for motorcycle tyres of the radial type according to claim 1, characterised in that: The ratio of the sub-tread band A to the entire tread band axial width WT is 35%-45%; the ratio of the sub-tread band B to the entire tread band axial width WT is 35%-45%.

3. A tread pattern structure for motorcycle tyres of the radial type according to claim 1, characterised in that: The pattern groove width of the pattern groove one is limited to 5-10 mm; The ratio of the length 30z of the pattern groove of the pattern groove one in the circumferential direction to the predetermined circumferential length J of the tread module T is 60%-70%; wherein the ratio of the length 30az of the pattern groove one a in the circumferential direction to 30z is 15%-25%, and the ratio of the length 30bz of the pattern groove one b in the circumferential direction to 30z is 75%-85%; The ratio of the length 30h of the pattern groove of the pattern groove one in the axial direction to the predetermined axial length WT of the tread module T is 15%-20%; wherein the ratio of the length 30ah of the pattern groove one a in the axial direction to 30h is 5%-15%, and the ratio of the length 30bh of the pattern groove one b in the axial direction to 30h is 5%-15%; The angle 30ajd between the pattern groove one a and the equator X-X is 35°-45°; the angle 30bjd between the pattern groove one b and the equator X-X is between 5°-15°.

4. A tread pattern structure for motorcycle tyres under traction according to claim 1, characterised in that: The pattern groove width of the pattern groove two is limited to 5-10 mm; The ratio of the length 31z of the pattern groove of the pattern groove two in the circumferential direction to the predetermined circumferential length J of the tread module T is 10%-15%; The ratio of the length 31h of the pattern groove of the pattern groove two in the axial direction to the predetermined axial length WT of the tread module T is 20%-25%; The angle 31jd between the pattern groove two and the equator X-X is 60°-70°.

5. The tread pattern structure for motorcycle radial tyres according to claim 1, characterized in that: The pattern groove width of the pattern groove three is limited to 5-10 mm; The ratio of the length 32z of the pattern groove of the pattern groove three in the circumferential direction to the predetermined circumferential length J of the tread module T is 10%-20%; The ratio of the length 32h of the pattern groove of the pattern groove three in the axial direction to the predetermined axial length WT of the tread module T is 15%-25%. The angle 32jd between the groove four and the equator X-X is 35°-45°.

6. The tread pattern structure for motorcycle radial tyres according to claim 1, characterized in that: The tread module T further comprises groove fours arranged on opposite sides with respect to the equatorial plane X-X of the tyre; The groove four is combined by groove four a and groove four b, wherein the groove four a is arranged on the sub-tread band B and the sub-tread band C, and the groove four b is arranged on the sub-tread band A1; The groove width of the groove four is limited to 5mm-10mm; The ratio of the length 33z of the groove of the groove four in the circumferential direction to the predetermined circumferential length J of the tread module T is 10%-20%, wherein the ratio of the length 33az of the groove four a in the circumferential direction to 33z is 100%, and the ratio of the length 33bz of the groove four b in the circumferential direction to 33z is 86%-91%; The ratio of the length 33h of the groove of the groove four in the axial direction to the predetermined axial length WT of the tread module T is 52%-60%, wherein the ratio of the length 33ah of the groove four a in the axial direction to 33h is 65%-75%, and the ratio of the length 33ah of the groove four b in the axial direction to 33h is 35%-42%; The angle 33ajd between the groove four a and the equator X-X is 60°-70°, and the angle 33bjd between the groove four b and the equator X-X is 60°-70°.

7. A tread pattern structure for motorcycle tyres under traction according to claim 1, characterised in that: The tread module T further comprises groove fours arranged on opposite sides with respect to the equatorial plane X-X of the tyre; The groove four is combined by groove four a and groove four b, wherein the groove four a is arranged on the sub-tread band B and the sub-tread band C, and the groove four b is arranged on the sub-tread band A1; The groove width of the groove four is limited to 5mm-10mm; The ratio of the length 33z of the groove of the groove four in the circumferential direction to the predetermined circumferential length J of the tread module T is 10%-20%, wherein the ratio of the length 33az of the groove four a in the circumferential direction to 33z is 100%, and the ratio of the length 33bz of the groove four b in the circumferential direction to 33z is 78%-86%; The ratio of the length 33h of the groove of the groove four in the axial direction to the predetermined axial length WT of the tread module T is 52%-60%, wherein the ratio of the length 33ah of the groove four a in the axial direction to 33h is 62%-73%, and the ratio of the length 33ah of the groove four b in the axial direction to 33h is 25%-30%; The angle 33ajd between the groove four a and the equator X-X is 60°-70°, and the angle 33bjd between the groove four b and the equator X-X is 60°-70°.

8. A tread pattern structure for motorcycle tyres under traction according to claim 1, characterised in that: The tread band is applied to a motorcycle tyre, and the land ratio of the tyre is 70%-90%.

9. A tread pattern structure for motorcycle tyres under traction according to claim 1, characterised in that: The cross-sectional shape of the groove on the tread module T is a wedge-shaped dovetail shape with a narrow top and a wide bottom.

10. A tread pattern structure for motorcycle tyres of the radial type according to claim 9, characterised in that: The two side walls of the pattern groove are provided with multiple protrusions linearly arranged along the length direction of the pattern groove, wherein the surface of the protrusion is a circular arc surface.

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