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发明公开
CN109563874A 用于安装机动车辆的机电动力转向系统的传动蜗杆的滚动轴承 有权

用于安装机动车辆的机电动力转向系统的传动蜗杆的滚动轴承
摘要：
根据本发明改进了一种用于安装机动车辆的机电动力转向系统的传动蜗杆(10)的滚动轴承(12)，以改善传动蜗杆(10)与蜗轮(11)之间的接合行为，其中，滚动轴承(12)具有可旋转的内圈(14)、不可旋转的外圈(17、18)、以及滚动本体(15)，滚动本体(15)布置在内圈(14)与外圈(17、18)之间并且由布置在内圈(14)的径向外侧部上的通道形的第一滚道(19)和布置在外圈(17、18)的径向内侧部上的通道形的第二滚道(20、21)引导，这是由于第二滚道(20、21)具有在其圆周(22)上变化的横截面轮廓，并且在倾斜轴线(27)沿第二滚道(20、21)的周向方向(22)占据预定的倾斜位置(28)的情况下，允许滚动本体(15)侧向偏移地滚动并且因此允许内圈(14)围绕与滚动轴承(12)的旋转轴线正交的倾斜轴线(27)倾斜，并且在倾斜轴线(27)相对于倾斜位置(28)以90°的角度(α)定向时将内圈(14)的倾斜阻止至最小程度。
摘要（英）：

A rolling bearing (12) for the mounting of a drive worm (10) of an electromechanical power steering system of a motor vehicle, with a rotatable inner ring (14), a non-rotatable outer ring (17, 18) androlling bodies (15) which are arranged between inner ring (14) and outer ring (17, 18) and are guided by a groove-shaped first raceway (19) arranged on the radially outer side of the inner ring (14)and by a groove-shaped second raceway (20, 21) arranged on the radially inner side of the outer ring (17, 18), is improved, according to the invention, in order to improve the engagement behaviour between drive worm (10) and worm wheel (11), in that the second raceway (20, 21) has a cross-sectional profile which varies over the circumference (22) thereof and permits rolling of laterally offset rolling bodies (15) and therefore tilting of the inner ring (14) about a tilting axis (27) orthogonal to the axis of rotation of the rolling bearing (12) if the tilting axis (27) takes up a predeterminedtilting position (28) in the circumferential direction (22) of the second raceway (20, 21), and which prevents tilting of the inner ring (14) except for a minimum when the tilting axis (27) is oriented at an angle (alpha) of 90 DEG to the tilting position (28).

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