Abstract:
An elastic tire according to the invention comprises a tread (1) which comprises at least one unit (3) for measuring the grip of the tire on the ground, the measuring unit (3) being intended to come into contact with the ground on each revolution of the tire, and comprising, viewed at a radially outer face (5) of the tread (1), a central zone (10) and an encircling zone (20) surrounding the central zone (10), a sensor (40) sensitive to at least a tangential force exerted on the radially outer top (11) of the central zone (10) being provided opposite the top (11), the central zone (10) and the encircling zone (20) satisfying the two conditions: a) Rzzc Rxze/Rzze or (ii) Ryzc/Rzzc>Ryze/Rzze, where: x, y and z represent the circumferential, axial and radial directions for the tire, Rzzc and Rzze represent the rigidities of the central zone (10) and of the encircling zone (20) under a force oriented perpendicularly to the radially outer face (5), Rxzc and Rxze represent the rigidities of the central zone (10) and of the encircling zone (20) under a force oriented tangentially to the radially outer face (5) in the circumferential direction (X) of the tire, and Ryzc and Ryze represent the rigidities of the central zone (10) and of the encircling zone (20) under a force oriented tangentially to the radially outer face (5) in the axial direction (Y).
Abstract translation:根据本发明的弹性轮胎包括胎面(1),其包括用于测量地面上的轮胎的抓地力的至少一个单元(3),所述测量单元(3)旨在与每个地面上的地面接触 轮胎的旋转,并且包括在胎面(1)的径向外表面(5)处观察到围绕中心区域(10)的中心区域(10)和环绕区域(20),传感器(40) 至少对施加在中心区域(10)的径向外顶部(11)上的切向力敏感,所述切向力与顶部(11)相对地设置,中心区域(10)和环绕区域(20)满足以下两个条件: a)R z C i R z Z e e,b)(i)Rx z C 1 / R 2 C 3 / 或者(ii)Ryz C / N 2 / 其中:x,y和z表示轮胎的圆周方向,轴向方向和径向方向,R表示和/或 在垂直于径向外表面(5)定向的力(Rxz)和Rxz(x)下的中心区域(10)和环绕区域(20)的刚度 在轮胎的圆周方向(X)上在与径向外表面(5)切向的力作用下表示中心区域(10)和环绕区域(20)的刚性, 在轴向(Y)上与径向外表面(5)切向的力下,中心区域(10)和环绕区域(20)的刚度表示为中心区域(10)和环绕区域(20) 。
Abstract:
Tire comprising two beads (20), two sidewalls (30) joining in a crown, and at least one carcass reinforcement (60) extending from the beads through the sidewalls to the crown, the carcass reinforcement being anchored in the two beads by a turn-up around an annular reinforcing structure in such a way as to form in each bead an incoming portion (61) and a wrapped-around portion (62), wherein each bead comprises a bead filler (110) and an outer band (120), the latter being placed axially outside of both the carcass reinforcement and the bead filler, wherein the assembly formed by the bead filler (110) and the outer band (120) has a thickness E(r), r being the distance to the radially innermost point (71) of the annular reinforcing structure, the thickness E(r) at different positions being such that, in the range of distances r greater than or equal to 15% and smaller than or equal to 50% of the radial height H of the tire, the variation of the thickness is less than or equal to −0.25 mm/mm over at least 5 mm.
Abstract:
Tire comprising two beads (20), two sidewalls (30) joining in a crown, and at least one carcass reinforcement (60) extending from the beads through the sidewalls to the crown, the carcass reinforcement being anchored in the two beads by a turn-up around an annular reinforcing structure in such a way as to form in each bead an incoming portion (61) and a wrapped-around portion (62), wherein each bead comprises a bead filler (110) and an outer band (120), the latter being placed axially outside of both the carcass reinforcement and the bead filler, wherein the assembly formed by the bead filler (110) and the outer band (120) has a thickness E(r), r being the distance to the radially innermost point (71) of the annular reinforcing structure, the thickness E(r) at different positions being such that, in the range of distances r greater than or equal to 15% and smaller than or equal to 50% of the radial height H of the tire, the variation of the thickness is less than or equal to −0.25 mm/mm over at least 5 mm.
Abstract:
A tire comprising two beads (20), two sidewalls (30) joining in a crown, and at least one carcass reinforcement (60) extending from the beads through the sidewalls to the crown, the carcass reinforcement being anchored in the two beads by a turn-up around an annular reinforcing structure (70) in such a way as to form in each bead an incoming portion (61) and a wrapped-around portion (62), wherein each bead comprises a bead filler (110) and an outer band (120), the latter being placed axially outside of both the carcass reinforcement and the bead filler, wherein the outer band (120) is made of a rubber compound having an elastic modulus G′ less than or equal to 15 MPa and a viscous modulus G″ such that: G″ [MPa]≦0.2G′ [MPa]−0.2 MPa, the elastic and viscous moduli being measured at 23° C.
Abstract:
An elastic tire according to the invention comprises a tread (1) which comprises at least one unit (3) for measuring the grip of the tire on the ground, the measuring unit (3) being intended to come into contact with the ground on each revolution of the tire, and comprising, viewed at a radially outer face (5) of the tread (1), a central zone (10) and an encircling zone (20) surrounding the central zone (10), a sensor (40) sensitive to at least a tangential force exerted on the radially outer top (11) of the central zone (10) being provided opposite the top (11), the central zone (10) and the encircling zone (20) satisfying the two conditions: a) Rzzc Rxze/Rzze or (ii) Ryzc/Rzzc>Ryze/Rzze, where: x, y and z represent the circumferential, axial and radial directions for the tire, Rzzc and Rzze represent the rigidities of the central zone (10) and of the encircling zone (20) under a force oriented perpendicularly to the radially outer face (5), Rxzc and Rxze represent the rigidities of the central zone (10) and of the encircling zone (20) under a force oriented tangentially to the radially outer face (5) in the circumferential direction (X) of the tire, and Ryzc and Ryze represent the rigidities of the central zone (10) and of the encircling zone (20) under a force oriented tangentially to the radially outer face (5) in the axial direction (Y).
Abstract translation:根据本发明的弹性轮胎包括胎面(1),其包括用于测量地面上的轮胎的抓地力的至少一个单元(3),所述测量单元(3)旨在与每个地面上的地面接触 轮胎的旋转,并且包括在胎面(1)的径向外表面(5)处观察到围绕中心区域(10)的中心区域(10)和环绕区域(20),传感器(40) 至少对施加在中心区域(10)的径向外顶部(11)上的切向力敏感,所述切向力与顶部(11)相对地设置,中心区域(10)和环绕区域(20)满足以下两个条件: a)R z C i R z Z e e,b)(i)Rx z C 1 / R 2 C 3 / 或者(ii)Ryz C / N 2 / 其中:x,y和z表示轮胎的圆周方向,轴向方向和径向方向,R表示和/或 在垂直于径向外表面(5)定向的力(Rxz)和Rxz(x)下的中心区域(10)和环绕区域(20)的刚度 在轮胎的圆周方向(X)上在与径向外表面(5)切向的力作用下表示中心区域(10)和环绕区域(20)的刚性, 在轴向(Y)上与径向外表面(5)切向的力下,中心区域(10)和环绕区域(20)的刚度表示为中心区域(10)和环绕区域(20) 。