CN106166924B

CN106166924B - Tyre for motorcycle

Info

Publication number: CN106166924B
Application number: CN201610731051.0A
Authority: CN
Inventors: 易静
Original assignee: Sichuan Yuanxing Rubber Co Ltd
Current assignee: Sichuan Yuanxing Rubber Co Ltd
Priority date: 2016-08-26
Filing date: 2016-08-26
Publication date: 2023-10-27
Anticipated expiration: 2036-08-26
Also published as: CN106166924A

Abstract

The invention discloses a motorcycle tire, and relates to the technical field of tires. The arrangement of the tread pattern of the present invention can counteract the fluidity of the tread band compound, thereby ensuring a stabilizing effect against vibrations caused during running on the road surface and abrasion resistance of the tread band, while at the same time the pattern structure of the present invention can solve the formation of irregular wear at the axially outer ends of the tread grooves in the above-mentioned prior art.

Description

Tyre for motorcycle

Technical Field

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

Background

Figures 1a and 1b show a prior art view of a direction-finding extension of the tread portion of a tyre under the trademark Racetec ^TM Are commercially available and are primarily suited for use on sport high horsepower motorcycles. In particular, figure 1a shows a racemtec suitable for being mounted on the rear wheel of a motorcycle ^TM The tread pattern of the tyre, while figure 1b shows a Racetec suitable for mounting on the front wheel of a motorcycle ^TM The tread pattern of the tire.

Referring to fig. 1a and 1b, the tread has a tread pattern comprising a plurality of grooves defining, as a whole, a solid/void ratio (solid/void ratio) between 4% and 10% on said tread band.

In particular, the tread pattern comprises: a plurality of substantially longitudinal first grooves 118, 119, the first grooves 118, 119 being inclined with respect to each other with respect to the equatorial plane X-X of the tyre; and a plurality of substantially longitudinal second grooves 115, 116, the second grooves 115, 116 being inclined with respect to each other with respect to the equatorial plane X-X of the tyre. Each first longitudinal groove 118, 119 alternates with one second longitudinal groove 115, 116.

In a tire to be mounted on a rear wheel, each of the first and second grooves has two curved sections 120, 121 and 125, 126, said curved sections 120, 121 and 125, 126 being circumferentially continuous (in a direction axially away from the equatorial plane X-X), the first curved sections 120, 125 having a concave shape and the second sections 121, 126 having a convex shape in the tire rolling direction indicated by arrow F1 in fig. 1 a.

On the other hand, in the tire to be mounted on the rear wheel (fig. 1 b), each first longitudinal groove has at least one curvilinear section with respect to the rolling direction of the tire, said at least one curvilinear section extending axially away from the equatorial plane X-X towards the shoulder.

The tread pattern shown in fig. 1a and 1b is formed on the tread of a tire having a radial carcass on top of which a belt structure is arranged, said belt structure comprising at least one layer of cords arranged substantially in circumferential direction.

Because of Racetec ^TM The tire has excellent characteristics in terms of steering, grip, handling and stability even at high speed, so racemec ^TM Tires are greatly welcome by motorcyclists. In particular, its tread pattern helps to ensure that a suitable contact surface is obtained under different riding conditions (along straight and/or around curves) and to ensure that proper drainage is obtained when the tire is travelling on an off-site wet tread.

In order to meet the high performance characteristics of motorcycles, the tires mounted on the wheels of the motorcycles must have excellent grip performance in order to be able to efficiently transmit high driving torque to the ground during running along straight roads and when accelerating off a curve, and also to ensure an effective braking action. Grip becomes a very critical factor when the tire is driven on wet road surfaces.

In order to guarantee these performance characteristics for optimal grip performance in a completely safe manner for the motorcyclist, the tyre must also ensure performance stability during travel along straight roads and (or in particular) during travel around bends, in particular in the case of high accelerations. In fact, the stability performance of a tire is an indication of its ability to effectively dampen vibrations transmitted during running due to non-planarity of the road surface so that these vibrations do not adversely affect the driving stability of the motorcycle due to transmission to the motorcycle.

The use of softer compounds in tread bands should in theory meet the grip requirements of tires designed to be mounted on motorcycles having a high power, wherein softer compounds are able to better adapt to contours resulting from road surface irregularities and/or penetrate into these irregularities, which are characterized by a lower modulus of elasticity and/or a higher hysteresis. However, in using the above-mentioned Racetec ^TM During testing of the tires, the use of the compound in these tires will create irregular wear in the shoulder areas, thereby axially of the groovesThe outer end portion produces initial signs of wear and thus reduces performance stability.

Disclosure of Invention

In order to overcome the problems of the prior art described above, the present invention provides a motorcycle tyre which, even in the case of soft compounds, is able to ensure adequate characteristics in terms of performance stability and wear uniformity under essentially any driving conditions of the motorcycle, in particular under critical conditions.

The present invention solves the above-mentioned problems by a tread pattern, the arrangement of which counteracts the fluidity of the tread band compound, thereby ensuring a stabilizing effect against vibrations caused during running on the road surface and the wear resistance of the tread band, while at the same time the pattern structure of the present invention also solves the formation of irregular wear at the axially outer ends of the tread grooves in the above-mentioned prior art.

In order to solve the defects in the prior art, the invention is realized by the following technical scheme:

tyre for motorcycles, comprising a tread band having a tread pattern comprising modules repeated along the circumferential extension of said tyre, characterized in that: the module comprises:

two longitudinally arranged tread patterns, which are arranged opposite to each other with respect to the equatorial plane of the tread band and staggered along the rolling direction of the tyre;

the pattern structure comprises a groove I, a groove II, a groove III, a groove IV, a groove V, a groove VI, a groove VII, a groove VIII, a groove IX, a groove X, a groove XI and a groove XII;

the groove I, the groove II and the groove III are distributed in a Y shape and are communicated with each other, and one end of the groove II extends to the tire shoulder of the tire; the groove III, the groove IV and the groove V are distributed in a Y shape and are mutually communicated, and the groove VI is communicated with the groove V and is arranged at one end of the groove V; the groove IV, the groove VII and the groove VIII are communicated with each other, and the groove IX is arranged at one side of the communicated part of the groove VII and the groove VIII, which is opposite to the groove IV; groove X is communicated with groove VIII; the groove I of a module pattern structure on the same side is communicated with the groove VIII and the groove X of the last module along the circumferential direction of the tire;

the groove XI is arranged in a region surrounded by the groove I, the groove III, the groove V, the groove VI and the tire equatorial plane; the groove XII is arranged in a region surrounded by the groove IV, the groove V, the groove VI, the groove VIII, the groove X and the tire equatorial plane.

The intercommunication department that recess I, recess II and recess III each other all adopts the circular arc to be excessive, and recess I is inclined downwards along the tire rotation direction, and the contained angle between recess I and the equatorial plane is 33 degrees, and recess II sets up along the tire rotation direction slant, and the contained angle of recess I and the adjacent lateral wall of recess II is 95 degrees, and recess III slant sets up downwards and inclines to the equatorial plane direction, and the contained angle of recess III and the adjacent lateral wall of recess I is 118 degrees, and the contained angle of recess III and the adjacent lateral wall of recess II is 139 degrees.

The groove IV is inclined downwards along the rotation direction of the tire, and the included angle between the adjacent side walls of the groove IV and the groove III is 127 degrees; the groove V is obliquely downwards arranged and is inclined towards the direction of the equatorial plane, and the included angle between the side wall of the groove V adjacent to the groove III is 138 degrees; the included angle between the side wall of the groove IV and the side wall of the groove V is 95 degrees; the groove VI is obliquely downwards arranged and is inclined towards the direction of the equatorial plane, the included angle between the groove VI and one adjacent side wall of the groove V is 153 degrees, and the included angle between the other adjacent side wall is 149 degrees.

The groove VII is obliquely upwards arranged along the rotation direction of the tire, the included angle between the adjacent side walls of the groove VII and the groove IV is 87 degrees, the groove VIII is obliquely downwards arranged and is inclined towards the direction of the equatorial plane, the included angle between the adjacent side walls of the groove VIII and the groove VII is 137 degrees, and the included angle between the adjacent side walls of the groove VIII and the groove IV is 127 degrees; the groove X is obliquely downwards arranged and is inclined towards the direction of the equatorial plane, and the included angle between the adjacent side walls of the groove X and the groove VIII is 144 degrees; the included angle between the side wall of the groove X adjacent to the groove I of the next module is 105 degrees, and the included angle between the side wall of the groove VIII adjacent to the groove I of the next module is 118 degrees.

Groove IX is arranged on the side of groove VII, which is opposite to groove IV, where groove VII communicates with groove VIII, in the direction of groove IV.

The groove XI is arranged obliquely upwards along the rotation direction of the tire; the groove XII is arranged obliquely downwards in the tire rotation direction.

The grooves VI and X are respectively provided with wear mark blocks.

Decorative flowers are arranged in the areas formed by the grooves II, III, IV, VII and the tire shoulder in a surrounding manner; decorative flowers are arranged in the areas formed by the grooves VII and VIII of the previous module and the grooves I and II of the next module and the tire shoulder.

The outer sides of the groove II and the groove VII are respectively communicated with a tire shoulder groove, and the tire shoulder grooves are formed in tire shoulders.

Compared with the prior art, the beneficial technical effects brought by the invention are as follows:

1. the tread pattern of the present invention has a special curve design variation, the distribution of grooves and the way of communication between the individual grooves, which counteracts the fluidity of the tread band compound, thus ensuring a stabilizing effect against vibrations caused during running on the road surface and the wear resistance of the tread band. In addition, the pattern grooves are widely distributed in an extending mode and are distributed in a staggered mode, in the running process, according to different stresses, the grooves can achieve specific curve change, and irregular abrasion at the axially outer end portions of the grooves can be weakened.

2. The provision of decorative flowers on the tread, which are closer to the shoulders, can significantly improve the cornering performance of the tyre, in particular of the tyre mounted on the rear wheel of the motorcycle, more particularly when cornering at high speeds and/or during full acceleration away from the curve, at the maximum inclination allowed by the tyre/motorcycle unit.

3. The communication between the grooves of the present invention is such that the angle formed between the grooves is specifically defined, enabling very efficient drainage during travel over wet surfaces. In fact, during running on a wet surface, in order to ensure a sufficient riding safety margin, the maximum camber angle state cannot be reached, whereas the communication between the plurality of grooves of the present invention and the angle of distribution are specifically limited, the optimum running performance of the vehicle can always be obtained on a wet surface even during running at high speeds.

Drawings

FIGS. 1a and 1b illustrate circumferentially extending non-portions of the treads of a rear tire and a front tire, respectively, of the prior art;

FIG. 2 is a tread configuration of the tire of the present invention;

FIG. 3 is a schematic structural diagram of embodiment 6 of the present invention;

reference numerals: 1. tread band, 2, module, 3, tread pattern, 4, equatorial plane, 5, grooves i, 6, grooves ii, 7, grooves iii, 8, grooves iv, 9, grooves v, 10, grooves vi, 11, grooves vii, 12, grooves viii, 13, grooves ix, 14, grooves x, 15, grooves xi, 16, grooves XII, 17, shoulders, 18, ornamental flowers, 19, wear-marking blocks, 20, shoulder grooves.

Detailed Description

Example 1

As a preferred embodiment of the present invention, referring to fig. 2 of the specification, this embodiment discloses:

tyre for motorcycles, comprising a tread band 1, said tread band 1 having a tread pattern comprising modules 2 repeated along the circumferential extension of said tyre, said modules 2 comprising:

two longitudinally disposed tread band structures 3, said two tread band structures 3 being disposed opposite to each other with respect to the equatorial plane 4 of the tread band 1 and staggered along the rolling direction of the tyre;

the pattern structure 3 comprises a groove I5, a groove II 6, a groove III 7, a groove IV 8, a groove V9, a groove VI 10, a groove VII 11, a groove VIII 12, a groove IX 13, a groove X14, a groove XI 15 and a groove XII 16;

the groove I5, the groove II 6 and the groove III 7 are distributed in a Y shape and are communicated with each other, and one end of the groove II 6 extends to a tire shoulder 17 of the tire; the groove III 7, the groove IV 8 and the groove V9 are distributed in a Y shape and are mutually communicated, and the groove VI 10 is communicated with the groove V9 and is arranged at one end of the groove V9; the groove IV 8, the groove VII 11 and the groove VIII 12 are communicated with each other, and the groove IX 13 is arranged at one side of the communicated part of the groove VII 11 and the groove VIII 12, which is opposite to the groove IV 8; groove X14 is communicated with groove VIII 12; the grooves I5 of the pattern structures 3 of one module 2 on the same side are communicated with the grooves VIII 12 and X14 of the previous module 2 along the circumferential direction of the tire;

groove XI 15 is arranged in the area surrounded by groove I5, groove III 7, groove V9, groove VI 10 and tire equatorial plane 4; grooves XII 16 are provided in the area enclosed by grooves IV 8, V9, VI 10, VIII 12, X14 and the equatorial plane 4 of the tire.

Example 2

As a further preferred embodiment of the present invention, referring to fig. 2 of the specification, this embodiment discloses:

groove XI 15 is arranged in the area surrounded by groove I5, groove III 7, groove V9, groove VI 10 and tire equatorial plane 4; the groove XII 16 is arranged in a region surrounded by the grooves IV 8, V9, VI 10, VIII 12, X14 and the tire equatorial plane 4;

the intercommunication department that recess I5, recess II 6 and recess III 7 each other all adopts the circular arc excessive, recess I5 is inclined downwards along the tire rotation direction, contained angle between recess I5 and the equatorial plane 4 is 33 degrees, recess II 6 is inclined upwards along the tire rotation direction and sets up, the contained angle of recess I5 and the adjacent lateral wall of recess II 6 is 95 degrees, recess III 7 slant sets up downwards and inclines to equatorial plane 4 direction, the contained angle of recess III 7 and the adjacent lateral wall of recess I5 is 118 degrees, the contained angle of recess III 7 and the adjacent lateral wall of recess II 6 is 139 degrees.

Example 3

the communication positions of the groove I5, the groove II 6 and the groove III 7 are all in arc transition, the groove I5 is inclined downwards along the rotation direction of the tire, the included angle between the groove I5 and the equatorial plane 4 is 33 degrees, the groove II 6 is inclined upwards along the rotation direction of the tire, the included angle between the adjacent side walls of the groove I5 and the groove II 6 is 95 degrees, the groove III 7 is inclined downwards and inclined towards the direction of the equatorial plane 4, the included angle between the adjacent side walls of the groove III 7 and the groove I5 is 118 degrees, and the included angle between the adjacent side walls of the groove III 7 and the groove II 6 is 139 degrees;

the groove IV 8 is inclined downwards along the rotation direction of the tire, and the included angle between the side wall of the groove IV 8 adjacent to the groove III 7 is 127 degrees; the groove V9 is obliquely downwards arranged and is inclined towards the direction of the equatorial plane 4, and the included angle between the side wall of the groove V9 adjacent to the groove III 7 is 138 degrees; the included angle between the side wall of the groove IV 8 adjacent to the groove V9 is 95 degrees; the groove VI 10 is obliquely downwards arranged and is inclined towards the direction of the equatorial plane 4, the included angle between one adjacent side wall of the groove VI 10 and the groove V9 is 153 degrees, and the included angle between the other adjacent side wall is 149 degrees.

Example 4

the groove IV 8 is inclined downwards along the rotation direction of the tire, and the included angle between the side wall of the groove IV 8 adjacent to the groove III 7 is 127 degrees; the groove V9 is obliquely downwards arranged and is inclined towards the direction of the equatorial plane 4, and the included angle between the side wall of the groove V9 adjacent to the groove III 7 is 138 degrees; the included angle between the side wall of the groove IV 8 adjacent to the groove V9 is 95 degrees; the groove VI 10 is obliquely downwards arranged and is inclined towards the direction of the equatorial plane 4, the included angle between the groove VI 10 and one adjacent side wall of the groove V9 is 153 degrees, and the included angle between the other adjacent side wall is 149 degrees;

the groove VII 11 is obliquely upwards arranged along the rotation direction of the tire, the included angle between the side wall of the groove VII 11 adjacent to the groove IV 8 is 87 degrees, the groove VIII 12 is obliquely downwards arranged and is inclined towards the direction of the equatorial plane 4, the included angle between the side wall of the groove VIII 12 adjacent to the groove VII 11 is 137 degrees, and the included angle between the side wall of the groove VIII 12 adjacent to the groove IV 8 is 127 degrees; the groove X14 is obliquely downwards arranged and is inclined towards the direction of the equatorial plane 4, and the included angle between the side wall adjacent to the groove X14 and the side wall adjacent to the groove VIII 12 is 144 degrees; the included angle between the groove X14 and the side wall adjacent to the groove I5 of the next module 2 is 105 degrees, and the included angle between the groove VIII 12 and the side wall adjacent to the groove I5 of the next module 2 is 118 degrees.

Example 5

the groove VII 11 is obliquely upwards arranged along the rotation direction of the tire, the included angle between the side wall of the groove VII 11 adjacent to the groove IV 8 is 87 degrees, the groove VIII 12 is obliquely downwards arranged and is inclined towards the direction of the equatorial plane 4, the included angle between the side wall of the groove VIII 12 adjacent to the groove VII 11 is 137 degrees, and the included angle between the side wall of the groove VIII 12 adjacent to the groove IV 8 is 127 degrees; the groove X14 is obliquely downwards arranged and is inclined towards the direction of the equatorial plane 4, and the included angle between the side wall adjacent to the groove X14 and the side wall adjacent to the groove VIII 12 is 144 degrees; the included angle between the groove X14 and the side wall adjacent to the groove I5 of the next module 2 is 105 degrees, and the included angle between the groove VIII 12 and the side wall adjacent to the groove I5 of the next module 2 is 118 degrees;

the groove IX 13 is arranged on one side of the groove VII 11, which is communicated with the groove VIII 12, relative to the groove IV 8 along the direction of the groove IV 8; the groove XI 15 is provided obliquely upward in the tire rotation direction; the groove XII 16 is disposed obliquely downward in the tire rotation direction.

Example 6

As a further preferred embodiment of the present invention, referring to fig. 3 of the specification, this embodiment discloses:

the groove IX 13 is arranged on one side of the groove VII 11, which is communicated with the groove VIII 12, relative to the groove IV 8 along the direction of the groove IV 8; the groove XI 15 is provided obliquely upward in the tire rotation direction; the groove XII 16 is arranged obliquely downwards along the rotation direction of the tire;

the grooves VI 10 and X14 are respectively provided with a wear mark block 19; decorative flowers 18 are arranged in the areas formed by the surrounding of the grooves II 6, III 7, IV 8, VII 11 and the tire shoulder 17; decorative flowers 18 are arranged in the areas formed by the grooves VII 11, VIII 12 of the previous module 2, the grooves I5, II 6 of the next module 2 and the surrounding areas of the tire shoulders 17.

The outer sides of the groove II 6 and the groove VII 11 are respectively communicated with a tire shoulder groove 20, and the tire shoulder grooves 20 are arranged on tire shoulders 17.

Claims

1. Tyre for motorcycles, comprising a tread band (1), said tread band (1) having a tread pattern comprising modules (2) repeated along the circumferential extension of said tyre, characterized in that: the module (2) comprises:

two longitudinally arranged tread structures (3), the two tread structures (3) being arranged opposite to the equatorial plane (4) of the tread band (1) and staggered along the rolling direction of the tyre;

the pattern structure (3) comprises a groove I (5), a groove II (6), a groove III (7), a groove IV (8), a groove V (9), a groove VI (10), a groove VII (11), a groove VIII (12), a groove IX (13), a groove X (14), a groove XI (15) and a groove XII (16);

the grooves I (5), the grooves II (6) and the grooves III (7) are distributed in a Y shape and are communicated with each other, and one end of the groove II (6) extends to a tire shoulder (17) of the tire; the groove III (7), the groove IV (8) and the groove V (9) are distributed in a Y shape and are mutually communicated, and the groove VI (10) is communicated with the groove V (9) and is arranged at one end of the groove V (9); the groove IV (8), the groove VII (11) and the groove VIII (12) are communicated with each other, and the groove IX (13) is arranged at one side of the communicated part of the groove VII (11) and the groove VIII (12) relative to the groove IV (8); groove X (14) is communicated with groove VIII (12); the grooves I (5) of the pattern structure (3) of the module (2) on the same side are communicated with the grooves VIII (12) and X (14) of the previous module (2) along the circumferential direction of the tire;

the groove XI (15) is arranged in a region surrounded by the groove I (5), the groove III (7), the groove V (9), the groove VI (10) and the tire equatorial plane (4); the grooves XII (16) are arranged in the area surrounded by the grooves IV (8), the grooves V (9), the grooves VI (10), the grooves VIII (12), the grooves X (14) and the tire equatorial plane (4);

the groove I (5), the groove II (6) and the groove III (7) are in arc transition at the communication position, the groove I (5) is inclined downwards along the rotation direction of the tire, the included angle between the groove I (5) and the equatorial plane (4) is 33 degrees, the groove II (6) is arranged obliquely upwards along the rotation direction of the tire, the included angle between the side wall of the groove I (5) adjacent to the groove II (6) is 95 degrees, the groove III (7) is arranged obliquely downwards and is inclined towards the equatorial plane (4), the included angle between the side wall of the groove III (7) adjacent to the groove I (5) is 118 degrees, and the included angle between the side wall of the groove III (7) adjacent to the groove II (6) is 139 degrees;

the groove IV (8) is inclined downwards along the rotation direction of the tire, and the included angle between the adjacent side walls of the groove IV (8) and the groove III (7) is 127 degrees; the groove V (9) is obliquely downwards arranged and is inclined towards the direction of the equatorial plane (4), and an included angle between the side wall of the groove V (9) adjacent to the groove III (7) is 138 degrees; the included angle between the side wall of the groove IV (8) adjacent to the groove V (9) is 95 degrees; the groove VI (10) is obliquely downwards arranged and is inclined towards the direction of the equatorial plane (4), the included angle between the groove VI (10) and one adjacent side wall of the groove V (9) is 153 degrees, and the included angle between the other adjacent side wall is 149 degrees.

2. A tyre for motorcycles as claimed in claim 1, wherein: the groove VII (11) is obliquely upwards arranged along the rotation direction of the tire, the included angle between the side wall of the groove VII (11) adjacent to the groove IV (8) is 87 degrees, the groove VIII (12) is obliquely downwards arranged and is inclined towards the equatorial plane (4), the included angle between the side wall of the groove VIII (12) adjacent to the groove VII (11) is 137 degrees, and the included angle between the side wall of the groove VIII (12) adjacent to the groove IV (8) is 127 degrees; the groove X (14) is obliquely downwards arranged and is inclined towards the direction of the equatorial plane (4), and the included angle between the side wall of the groove X (14) adjacent to the groove VIII (12) is 144 degrees; the included angle between the groove X (14) and the side wall adjacent to the groove I (5) of the next module (2) is 105 degrees, and the included angle between the groove VIII (12) and the side wall adjacent to the groove I (5) of the next module (2) is 118 degrees.

3. A tyre for motorcycles as claimed in claim 1 or 2, wherein: the groove IX (13) is arranged on the side opposite to the groove IV (8) at the connection point of the groove VII (11) and the groove VIII (12) along the direction of the groove IV (8).

4. A tyre for motorcycles as claimed in claim 3, wherein: the groove XI (15) is provided obliquely upward in the tire rotation direction; the grooves XII (16) are arranged obliquely downward in the tire rotation direction.

5. A tyre for motorcycles as claimed in claim 1 or 2, wherein: the grooves VI (10) and X (14) are respectively provided with wear mark blocks (19).

6. A tyre for motorcycles as claimed in claim 1 or 2, wherein: decorative flowers (18) are arranged in the areas formed by the surrounding of the grooves II (6), the grooves III (7), the grooves IV (8), the grooves VII (11) and the tire shoulders (17); decorative flowers (18) are arranged in the areas formed by the surrounding of the grooves VII (11), the grooves VIII (12) and the grooves I (5), the grooves II (6) and the tire shoulders (17) of the previous module (2) and the next module (2).

7. A tyre for motorcycles as claimed in claim 1 or 2, wherein: the outer sides of the groove II (6) and the groove VII (11) are respectively communicated with a tire shoulder groove (20), and the tire shoulder grooves (20) are arranged on tire shoulders (17).