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CN109291739A 用于车轮的轮胎 有权

用于车轮的轮胎
摘要：
一种轮胎，其具有包括至少一个周向胎纹沟(10)的胎面花纹，所述周向胎纹沟在径向截面中具有轮廓，盖轮廓包括：靠近径向外表面(S)的第一区域(Z1)，其具有按最小宽度W1相互间隔开的侧壁(11)；第二区域(Z2)，其具有侧壁(11)彼此离散的部分(Pt)和具有最大截面宽度W2的最大宽度部分(Pmax)；以及第三区域(Z3)，其具有小于W2的最大宽度W3，且相对于第二区域(Z2)位于径向内侧。在第三区域(Z3)中，侧壁(11)与限定胎纹沟(10)的总深度(H10)的底部部分(Pf)相连。W2和W1之间的比率大于1且等于或小于2。最大宽度部分(Pmax)的几何中心(G2)位于深度(PG)，在总深度(H10)的40％与60％之间包括深度(PG)。
摘要（英）：

A tyre has a tread pattern comprising at least one circumferential sipe (10), having, in radial section, a profile comprising: a first zone (Z1) close to the radially outer surface (S), having side walls (11) mutually spaced apart according to a minimum width W1; a second zone (Z2), having a portion (Pt) in which the side walls (11) diverge from one another, and a portion of maximum width (Pmax) having a maximum section width W2; and a third zone (Z3) having a maximum width W3, less than W2, radially inner with respect to the second zone (Z2). In the third zone (Z3) the side walls (11) join with a bottom portion (Pf) defining a total depth (H10) of the sipe (10). The ratio between W2 and W1 is greater than 1 and equal to or less than 2. A geometric centre (G2) of the portion of maximum width (Pmax) lies at a depth (PG) comprised between 40% and 60% of the total depth (H10).

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