Motorcycle tires

Abstract

To provide a tire for a motor cycle which can additionally decrease tire noise.SOLUTION: A tire 1 for a motor cycle includes a tread part 2. A crown block row 3R is arranged on a tire equator C of the tread part 2. Separation distance in a tire circumferential direction between adjacent crown blocks 3 in the tire circumferential direction includes a first distance La1 and a second distance La2 different from the first distance La1. A centroid 3c of a tread 3a of the crown block 3 is arranged at a position separated from the tire equator C as far as a distance Lb in the tire axial direction.SELECTED DRAWING: Figure 1

Claims

1. A motorcycle tire having a tread section, The tread portion is provided with a row of crown blocks arranged in the circumferential direction of the tire, with multiple crown blocks positioned on the tire equator. The circumferential separation distance between adjacent crown blocks in the circumferential direction of the tire includes a first distance and a second distance different from the first distance. The centroids of the tread surfaces of the aforementioned multiple crown blocks are each located at a distance from the tire equator in the direction of the tire axis. The tread portion includes a first tread end and a second tread end. The crown block includes a plurality of first crown blocks whose centroids are located on the first tread end side with respect to the tire equator, and a plurality of second crown blocks whose centroids are located on the second tread end side with respect to the tire equator. The first crown block and the second crown block are arranged alternately in the circumferential direction of the tire. The aforementioned tread portion has a specified tire rotation direction. The plurality of crown blocks include a crown front-end edge located on the front-end side in the tire rotation direction, The aforementioned crown-first edge is inclined with respect to the tire axis. Motorcycle tires.

2. A motorcycle tire having a tread portion, The tread portion is provided with a row of crown blocks arranged in the circumferential direction of the tire, with multiple crown blocks positioned on the tire equator. The circumferential separation distance between adjacent crown blocks in the circumferential direction of the tire includes a first distance and a second distance different from the first distance. The centroids of the tread surfaces of the aforementioned multiple crown blocks are each located at a distance from the tire equator in the direction of the tire axis. The tread portion comprises a pair of middle block rows on the outer side of the crown block in the tire axial direction, in which a plurality of middle blocks are arranged in the tire circumferential direction, The middle block includes, on its outer side in the tire axial direction, a pair of shoulder block rows in which multiple shoulder blocks are arranged in the tire circumferential direction, The centroids of the tread surfaces of the plurality of middle blocks and the centroids of the tread surfaces of the plurality of shoulder blocks are each located at a distance in the circumferential direction of the tire from the centroids of the tread surfaces of the plurality of crown blocks. The aforementioned tread portion has a specified tire rotation direction. The plurality of crown blocks include a crown front-end edge located on the front-end side in the tire rotation direction, The aforementioned crown-first edge is inclined with respect to the tire axis. Motorcycle tires.

3. The tire for a motorcycle according to Claim 2, wherein the distance in the tire circumferential direction between the centroid of the tread surface of the plurality of middle blocks and the centroid of the tread surface of the plurality of crown blocks is 5.0 to 15.0 mm.

4. The tire for a motorcycle according to claim 2 or 3, wherein the distance in the tire circumferential direction between the centroid of the tread surface of the plurality of shoulder blocks and the centroid of the tread surface of the plurality of crown blocks is 5.0 to 15.0 mm.

5. A motorcycle tire having a tread portion, The tread portion is provided with a row of crown blocks arranged in the circumferential direction of the tire, with multiple crown blocks positioned on the tire equator. The circumferential separation distance between adjacent crown blocks in the circumferential direction of the tire includes a first distance and a second distance different from the first distance. The centroids of the tread surfaces of the aforementioned multiple crown blocks are each located at a distance from the tire equator in the direction of the tire axis. The aforementioned tread portion has a specified tire rotation direction. The plurality of crown blocks include a crown front-end edge located on the front-end side in the tire rotation direction, The aforementioned crown front edge is inclined with respect to the tire axis, The aforementioned crown front edge extends in a V-shape from the first outer end to the second outer end in the tire axial direction. The crown front edge includes a first edge portion extending linearly from the first outer end toward the tire equator and a second edge portion extending linearly from the second outer end toward the tire equator. The first edge portion and the second edge portion are connected at a distance from the tire equator in the direction of the tire axis. Motorcycle tires.

6. The tread portion comprises a pair of middle block rows on the outer side of the crown block in the tire axial direction, in which a plurality of middle blocks are arranged in the tire circumferential direction, The middle block includes, on its outer side in the tire axial direction, a pair of shoulder block rows in which multiple shoulder blocks are arranged in the tire circumferential direction, Each of the aforementioned middle blocks and shoulder blocks includes a middle front-end edge and a shoulder front-end edge located on the front-end side in the tire rotation direction. The first edge portion or the second edge portion and the shoulder leading edge are located on a first virtual straight line, The motorcycle tire according to claim 5, wherein the middle leading edge is located on the rearward side in the tire rotation direction relative to the first virtual straight line.

7. The motorcycle tire according to any one of claims 1 to 6, wherein the angle of the crown-first edge with respect to the tire axis is 10 to 45 degrees.

8. The motorcycle tire according to any one of claims 1 to 7, wherein the distance between the centroid of the crown block and the tire equator is 1.0 to 15.0 mm.

9. Each of the plurality of crown blocks is provided with a crown sipe extending in the direction of the tire axis, The motorcycle tire according to any one of claims 1 to 8, wherein the depth of the crown sipe is 30% to 70% of the block height of each crown block.

10. The motorcycle tire according to claim 9, wherein the length of the crown sipe in the tire axial direction is 5% to 20% of the maximum length of each crown block in the tire axial direction.

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