CN115122832B - Tyre with anti-bias abrasion - Google Patents

Tyre with anti-bias abrasion Download PDF

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Publication number
CN115122832B
CN115122832B CN202110324425.8A CN202110324425A CN115122832B CN 115122832 B CN115122832 B CN 115122832B CN 202110324425 A CN202110324425 A CN 202110324425A CN 115122832 B CN115122832 B CN 115122832B
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China
Prior art keywords
groove
tread
degrees
line
groove surface
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CN202110324425.8A
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Chinese (zh)
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CN115122832A (en
Inventor
甘明翰
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Cheng Shin Rubber Ind Co Ltd
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Cheng Shin Rubber Ind Co Ltd
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Priority to CN202110324425.8A priority Critical patent/CN115122832B/en
Publication of CN115122832A publication Critical patent/CN115122832A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
    • B60C11/03—Tread patterns
    • B60C11/12—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes
    • B60C11/1204—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes with special shape of the sipe
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
    • B60C11/03—Tread patterns
    • B60C11/12—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
    • B60C11/03—Tread patterns
    • B60C11/12—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes
    • B60C11/1236—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes with special arrangements in the tread pattern
    • B60C11/124—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes with special arrangements in the tread pattern inclined with regard to a plane normal to the tread surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C2200/00—Tyres specially adapted for particular applications
    • B60C2200/10—Tyres specially adapted for particular applications for motorcycles, scooters or the like

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Tires In General (AREA)

Abstract

The invention relates to a tire with uneven wear resistance, which comprises a tire body, wherein the tire body comprises a tread part and two tire shoulder parts which are arranged on two opposite sides of the tread part, the tread part is provided with a tread center line, each tire shoulder is provided with a plurality of tire shoulder auxiliary grooves which encircle each tire shoulder part, each tire shoulder auxiliary groove is provided with a plurality of grooves, the included angle between each groove and the tread center line is between 28 degrees and 45 degrees, and the length of each groove is between 27 mm and 66 mm. The tire bias abrasion is reduced and the dry grabbing performance and the control stability are improved by means of the groove angle and the groove length of the tire shoulder auxiliary grooves.

Description

Tyre with anti-bias abrasion
Technical Field
The invention relates to a tire with uneven wear resistance.
Background
On dry road surfaces, tires for motorcycles are required to have stability in cornering from straight running, and in particular, to have uniform transition characteristics and moderate comfort during cornering. While wet grip of the tire is important when wet. Among them, in order to suppress the water drift phenomenon, grooves along the tire circumferential direction are very effective, and the angle with respect to the tire circumferential direction increases. On the other hand, on a dry road surface, a large lateral force is required at the time of turning, but the lateral force (lateral force, camber thrust) generated by the circumferential groove is small, so that a sufficient turning force cannot be obtained.
In the aforementioned chinese patent publication No. CN103863017B, "a tire for a motorcycle", it is disclosed that the tread surface has a central inclined main groove extending obliquely toward the tire circumferential side at an angle α from the inner end in the vicinity of the tire equatorial plane to the outer end on the outer side in the tire axial direction from the ground contact width region when standing, and being alternately provided on both sides of the tire equatorial plane. In the grounding width region when standing, the interval between the adjacent central inclined main grooves in the circumferential direction is less than 0.5 times of the grounding length when standing. In the ground contact width region when standing upright, the center inclined main grooves adjacent to each other in the tire axial direction partially overlap each other in the tire axial direction. The central inclined main groove has a circumferential groove length in a grounding width region when standing upright, which is smaller than the grounding length.
The above patent has structural features such as the interval between circumferentially adjacent central inclined main grooves being 0.5 times or less the ground contact length when standing up, and the tire axial adjacent central inclined main grooves being partially overlapped in the tire axial direction within the ground contact width region when standing up, although the dry comfort and the over-curved grip can be improved, and abrasion abnormality is likely to occur in actual vehicle use.
Disclosure of Invention
Accordingly, the tire with uneven wear resistance of the present invention has the advantages of solving the above-mentioned drawbacks.
The invention relates to a tire with uneven wear resistance, which comprises a tire body, wherein the tire body comprises a tread part and two tire shoulder parts which are arranged on two opposite sides of the tread part, the tread part is provided with a tread center line, each tire shoulder is provided with a plurality of tire shoulder auxiliary grooves which encircle each tire shoulder part, each tire shoulder auxiliary groove is provided with a plurality of grooves, the included angle between an extension line of each groove and the tread center line ranges from 28 degrees to 45 degrees, and the length of each groove ranges from 27 mm to 66 mm.
Further, the plurality of grooves includes a large groove and a small groove, and the length ratio of the large groove to the small groove is between 2 times and 3 times.
Further, the tread portion has a developed width between the shoulder portions, the shoulder minor groove being located between 30% and 40% of the developed width from the tread centerline.
Further, the groove comprises a start end, a tail end, a first groove surface and a second groove surface, wherein the start end is positioned on the extension line and is close to the tread center line, the tail end is positioned on the extension line and is far away from the tread center line, the first groove surface and the second groove surface extend from opposite sides of the extension line at the tail end, and an included angle is formed between the first groove surface and the second groove surface, and the included angle ranges from 27 degrees to 44 degrees.
Further, the groove further comprises a first vertical line, the first vertical line is perpendicular to the extension line at the position of the tail end, an included angle between the first vertical line and the first groove surface ranges from 62 degrees to 80 degrees, and an included angle between the first vertical line and the second groove surface ranges from 62 degrees to 80 degrees.
Further, the groove further comprises a second vertical line and a third groove surface, the second vertical line and the third groove surface are arranged at the position of the starting end, the second vertical line is perpendicular to the extension line, the third groove surface extends from the extension line and is positioned on the same side as the second groove surface, and the included angle between the second vertical line and the third groove surface ranges from 1 degree to 77 degrees.
Further, the tread portion has a plurality of central main grooves, each of the central main grooves including a main groove having a break groove at one end thereof, the break increasing the rigidity of one of the tread portions.
The technical characteristics have the following advantages:
1. The inclined angle between the extending line of each groove and the tread center line is 28-45 degrees, so that the uneven wear resistance can be improved, the length of each groove is 27-67 mm, the rigidity of the pattern end can be enhanced, and the over-bending stability can be improved.
2. The spread width of each tire shoulder auxiliary groove from 30% to 40% of the center line of the tire tread can help to resist uneven wear and promote the grip at the tire shoulder.
3. The included angle between the first vertical line and the second groove surface is between 27 degrees and 44 degrees, the included angle between the first vertical line and the first groove surface is between 62 degrees and 80 degrees, the included angle between the first vertical line and the second groove surface is between 62 degrees and 80 degrees, the included angle can resist uneven wear, the included angle between the first vertical line and the first groove surface can resist uneven wear, and the included angle between the first vertical line and the second groove surface can resist uneven wear.
4. By using one end of the main groove of each central main groove as a breaking groove, the rigidity of one tire shoulder part is increased at the breaking position.
Drawings
FIG. 1 is a perspective view of a tire with anti-uneven wear according to an embodiment of the invention.
FIG. 2 is a front view of a tire with anti-uneven wear according to an embodiment of the invention.
FIG. 3 is a plan view of a tire with anti-bias wear according to an embodiment of the present invention.
FIG. 4 is a block diagram of a shoulder sub-groove unit of a tire with anti-bias wear according to an embodiment of the present invention.
FIG. 5 is an enlarged view of a large groove of a tire with anti-bias wear according to an embodiment of the present invention.
FIG. 6 is an enlarged view of a small groove of a tire with anti-bias wear according to an embodiment of the present invention.
Symbol description:
1 tyre body
2 Tread portion
21 Central main trench
211 Main ditch
212 Auxiliary ditch
3 Shoulder portion
31 Shoulder auxiliary groove
321 First extension line
322 A second extension line
33 Big groove
331 First groove surface of large groove
332 Second groove surface of large groove
333 Third groove surface of large groove
34 Small groove
341 First groove surface of small groove
342 Second groove surface of small groove
343 Third groove surface of small groove
4, Center line of tread
5 First vertical line of large groove
6 Second vertical line of large groove
7 First vertical line of small groove
8 Second vertical line of small groove
Θ 1 first included angle
Θ 2 second included angle
Θ 3 third included angle
Θ 4 fourth included angle
Θ 5 fifth included angle
Θ 6 sixth included angle
Θ 7 seventh included angle
Θ 8 eighth included angle
Θ 9 ninth included angle
Θ 10 tenth included angle
A1 first starting end
A2 first end
B1, the second initial end
B2 second end
D 1 major groove length
D 2 minor groove length
Z is the unfolding width.
Detailed Description
Referring to fig. 1 to 3, a tire with uneven wear resistance according to the present embodiment includes: the tire body 1 comprises a tread portion 2 and two tread portions 3, the tread portions 3 are respectively located at two opposite sides of the tread portion 2, the tread portion 2 has a spreading width Z between the two tread portions 3, the tread portion 2 has a tread center line 4, and the tread portion 2 has a plurality of central main grooves 21. Each central main groove 21 comprises a main groove 211 and a sub groove 212, wherein the main groove 211 extends from adjacent to the tread center line 4 towards one of the shoulder portions 3, one end of the main groove 211 is a breaking groove, the sub groove 212 is spaced from the other end of the main groove 211, the length of the sub groove 212 is smaller than that of the main groove 211, the extending directions of the main groove 211 and the sub groove 212 are consistent, wherein the breaking position of the main groove 211 increases the rigidity of the shoulder portion 3 extending to. Any two adjacent central main grooves 21 extend with the tread center line 4 as a symmetry center. Each shoulder portion 3 has a plurality of shoulder sub-grooves 31 surrounding each shoulder portion 3, each shoulder sub-groove 31 being located at the development width of 30% to 40% from the tread center line 4, each shoulder sub-groove 31 having a plurality of grooves including a large groove 33 and a small groove 34.
Referring to fig. 4 to 6, the large groove 33 includes a first starting end A1, a first end A2, a first extending line 321, a first groove surface 331, a second groove surface 332, a third groove surface 333, a first vertical 5 of the large groove, and a second vertical 6 of the large groove, the large groove 33 extends toward the first extending line 321, the first starting end A1 is located on the first extending line 321 and is close to the tread center line 4, the first end A2 is located on the first extending line 321 and is far away from the tread center line 4, the first groove surface 331 and the second groove surface 332 extend from opposite sides of the first extending line 321 at the position of the first end A2, the first vertical 5 of the large groove is perpendicular to the first extending line 321, the second vertical 6 of the large groove extends perpendicular 6 is perpendicular to the first extending line 321, an included angle θ between the first groove surface 331 and the first groove surface 321 and the second groove surface 332 is equal to the first vertical 35 θ, the first groove surface and the second groove surface 332 are included in an included angle θ -shaped angle θ -between the first groove surface and the first groove surface 321 and the second groove surface 35 and the second groove surface 332, and the angle θ -shaped angle θ 2 is equal to the first groove surface and the third groove surface and the angle θ -shaped groove surface of the first groove surface and the angle-shaped 32.
The small groove 34 includes a second starting end B1, a second end B2, a second extending line 322, a small groove first groove surface 341, a small groove second groove surface 342, a small groove third groove surface 343, a small groove first vertical line 7 and a small groove second vertical line 8, the small groove 34 extends toward the second extending line 322, the second starting end B1 is located on the second extending line 322 and is close to the tread center line 4, the second end B2 is located on the second extending line 322 and is far away from the tread center line 4, the small groove first groove surface 341 and the small groove second groove surface 342 extend from opposite sides of the second extending line 322 at the position of the second end B2, the small groove first vertical line 7 is perpendicular to the second extending line 322, the small groove second vertical line 8 is perpendicular to the second extending line 322 at the position of the second starting end B1, the small groove third groove surface is located on the second extending line 322 and is far away from the tread center line 4, an included angle of the small groove first groove surface 341 and the small groove second vertical line 342 is equal to the first vertical line 343, an included angle of the small groove first vertical line 32 is formed between the small groove first vertical line 35 and the small groove first vertical line 342 at the position of the second end B2 and the small groove second vertical line 342 is equal to the second vertical line 322, the small groove first vertical line 32 is formed at the position of the small groove first vertical line 32.
The first angle θ 1 and the sixth angle θ 6 are between 28 degrees and 45 degrees, the second angle θ 2 and the seventh angle θ 7 are between 27 degrees and 44 degrees, the third angle θ 3 and the eighth angle θ 8 are between 62 degrees and 80 degrees, the fourth angle θ 4 and the ninth angle θ 9 are between 62 degrees and 80 degrees, the fifth angle θ 5 and the tenth angle θ 10 are between 1 degree and 77 degrees, the major groove length D 1 and the minor groove length D 2 are between 27 mm and 66 mm, and the ratio of the major groove length D 1 to the minor groove length D 2 is between 2 times and 3 times.
In this embodiment, the anti-uneven wear experiment is performed, the angles of the first included angles θ 1 of two different large grooves 33 are set to be compared, the first parameter is that the angle of the first included angle θ 1 of the large groove 33 is set between 28 degrees and 45 degrees, the second parameter is that the angle of the first included angle θ 1 of another large groove 33 is set to be 46 degrees, the anti-uneven wear experiment is performed on the large groove 33 of the first included angle θ 1 of the two parameters, 10 nodes are set in each large groove 33, and the pressure distribution values of each node are obtained through Finite Element Analysis (FEA) simulation as follows:
first, bilateral pressure distribution Gap value of large groove with first included angle theta 1 at angle of 28-45 DEG
Two, bilateral pressure distribution Gap value of large groove with first included angle theta 1 at angle of 46 DEG
The average value of the GAP of the bilateral pressure distribution is 0.0139 through Finite Element Analysis (FEA) simulation experiments, the average value of the GAP of the bilateral pressure distribution is 0.0324 through Finite Element Analysis (FEA) simulation experiments, the average value of the GAP of the bilateral pressure distribution is more likely to generate uneven wear when the GAP of the bilateral pressure distribution is larger, and the average value of the GAP of the bilateral pressure distribution is less likely to generate uneven wear when the angle of the first angle of the bilateral pressure distribution is larger than 45, as shown in Finite Element Analysis (FEA) simulation experiments, the angle of the GAP of the bilateral pressure distribution is less likely to generate uneven wear when the angle of the first angle of the large groove 33 is larger than 45.
While the operation, use and effectiveness of the present invention will be fully understood from the foregoing description of the embodiments, the above-described embodiments are merely preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, i.e., the invention is capable of being modified or practiced in light of the appended claims and their descriptions.

Claims (4)

1. A tyre with anti-bias abrasion comprises a tyre body, the tyre body comprises a tread part and two shoulder parts at two opposite sides of the tread part, the tread part has a tread center line, characterized in that each shoulder part has a plurality of shoulder auxiliary grooves surrounding each shoulder part, each shoulder auxiliary groove has a plurality of grooves, each groove has an angle range of 28 degrees to 45 degrees with the tread center line, the length of each groove is between 27 mm to 66 mm, the groove comprises a start end, a tail end, a first groove surface and a second groove surface, the start end is positioned on the extension line and is close to the tread center line, the tail end is positioned on the extension line and is far away from the tread center line, the first groove surface and the second groove surface extend from opposite sides of the extension line at the tail end, the first groove surface and the second groove surface form an included angle ranging from 27 degrees to 44 degrees, the groove further comprises a first vertical line, the first vertical line is perpendicular to the extension line at the position of the tail end, the included angle ranging from 62 degrees to 80 degrees, the first vertical line and the second groove surface further comprises a second vertical line and a third groove surface, the second vertical line and the third groove surface are arranged at the position of the starting end, the second vertical line is perpendicular to the extension line, the third groove surface extends from the extension line and is positioned on the same side as the second groove surface, and the included angle ranging from 1 degree to 77 degrees.
2. The bias wear resistant tire of claim 1 wherein the plurality of grooves comprises a large groove and a small groove, the ratio of the large groove to the small groove being between 2 and 3 times the length of the large groove.
3. The bias wear resistant tire of claim 1 wherein said tread portion has a developed width between said shoulder portions, said shoulder minor groove being located between 30% and 40% of said developed width from said tread centerline.
4. A bias wear resistant tire as in claim 1, wherein said tread portion has a plurality of central main grooves, each of said central main grooves including a main groove having a break groove at one end, said break increasing the rigidity of one of said tread portions.
CN202110324425.8A 2021-03-26 2021-03-26 Tyre with anti-bias abrasion Active CN115122832B (en)

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CN202110324425.8A CN115122832B (en) 2021-03-26 2021-03-26 Tyre with anti-bias abrasion

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Application Number Priority Date Filing Date Title
CN202110324425.8A CN115122832B (en) 2021-03-26 2021-03-26 Tyre with anti-bias abrasion

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CN115122832A CN115122832A (en) 2022-09-30
CN115122832B true CN115122832B (en) 2024-05-24

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07228107A (en) * 1994-02-17 1995-08-29 Bridgestone Corp Pneumatic tire for motorcycle
CN203460618U (en) * 2013-08-06 2014-03-05 厦门正新橡胶工业有限公司 Pneumatic tire tread pattern structure for low-rolling-resistance motorcycle
JP2014210499A (en) * 2013-04-18 2014-11-13 住友ゴム工業株式会社 Pneumatic tire
CN104417277A (en) * 2013-09-04 2015-03-18 住友橡胶工业株式会社 Motorcycle tire
CN108099506A (en) * 2017-12-27 2018-06-01 四川远星橡胶有限责任公司 A kind of pattern structure on tire tread
CN110936770A (en) * 2018-09-21 2020-03-31 住友橡胶工业株式会社 Tyre for vehicle wheels
CN111806162A (en) * 2019-04-12 2020-10-23 正新橡胶工业股份有限公司 Tyre capable of reinforcing drainage performance

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07228107A (en) * 1994-02-17 1995-08-29 Bridgestone Corp Pneumatic tire for motorcycle
JP2014210499A (en) * 2013-04-18 2014-11-13 住友ゴム工業株式会社 Pneumatic tire
CN203460618U (en) * 2013-08-06 2014-03-05 厦门正新橡胶工业有限公司 Pneumatic tire tread pattern structure for low-rolling-resistance motorcycle
CN104417277A (en) * 2013-09-04 2015-03-18 住友橡胶工业株式会社 Motorcycle tire
CN108099506A (en) * 2017-12-27 2018-06-01 四川远星橡胶有限责任公司 A kind of pattern structure on tire tread
CN110936770A (en) * 2018-09-21 2020-03-31 住友橡胶工业株式会社 Tyre for vehicle wheels
CN111806162A (en) * 2019-04-12 2020-10-23 正新橡胶工业股份有限公司 Tyre capable of reinforcing drainage performance

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