| 摘要 |
Tire profile for a pneumatic tire (10) of an automobile comprising a tread portion comprising at least one sipe (20), the sipe (20) comprising an extension in a width direction (22) and a depth in radial direction (24), wherein the sipe (20) comprises a first portion (36), a second portion (38) arranged radially inward to the first portion (36) and at least one further portion (40), wherein the further portion (40) is connected to a portion arranged above the further portion (40) in radial direction by a further connecting line, wherein the sipe (20) comprises a first part (30), a second part (32) arranged directly besides the first part (30) in width direction (22) and at least one third part (34) directly besides the second part (32) in width direction (22), wherein the first portion (36) is inclined to the radial direction (24) by an acute angle α1, the second portion (38) is inclined to the radial direction (24) by an acute angle a2different to α1and the further portion (40) is inclined to the radial direction (24) by an acute angle αxdifferent to α1and different to a2, wherein the mathematical values of α1and a2are both positive or negative at least partially along width direction (22) and/or the mathematical values of a2and αxare both positive or negative at least a partially along width direction (22), and/or the first part (30) is inclined to the width direction (22) by an acute angle β1, the second part (32) is inclined to the width direction (22) by an acute angle P2different to β1and the third part (34) is inclined to the width direction (22) by an acute angle β3different to β1and different to P2, wherein the mathematical values of β1and P2are both positive or negative at least a partially along radial direction (24) and/or the mathematical values of P2 and β3 are both positive or negative at least a partially along radial direction (24). Due to the same mathematical value of subsequent portions (36, 38, 40) or parts (30, 32, 34) of the sipe (20) in radial direction (24) and/or width direction (22) bigger and smaller protrusion (42) / depression (44) of adjacent blocks (26, 28) spaced to each other by the sipe (20) are provided leading to a high stiffness, particularly at high load, and a low wear. |
