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    • 3. 发明公开
    • BEARING DEVICE FOR DRIVING WHEEL, AND ITS ASSEMBLING METHOD
    • 蒙特利尔大学教育研究所(TRAVORRICHTUNGFÜREIN ANTRIEBSRAD UND MONTAGEVERFAHRENDAFÜR
    • EP2127902A4
    • 2012-04-04
    • EP08721609
    • 2008-03-07
    • NTN TOYO BEARING CO LTD
    • FUKUMURA YOSHIKAZUKURODA MASAYUKIKURA HISAAKITOMOGAMI SHINKAWAMURA HIROSHIFUKUSHIMA SHIGEAKIOZAWA MASAHIROASANO YUICHI
    • B60B35/18B60B35/14F16C19/18F16C33/60F16D1/06F16D3/2245
    • B60B27/0094B60B27/0005B60B27/0026B60B27/0042B60B27/0084F16C19/186F16C19/527F16C35/0635F16C2326/02F16D1/0858F16D3/224F16D2001/103F16D2003/22326F16D2300/12Y10T29/49643
    • Provided is a small-sized, lightweight, low-cost, and highly reliable bearing device for a driving wheel which needs no tapered spline, and eliminates a circumferential backlash in spline fitting portions to thereby prevent unusual noise. The bearing device for a driving wheel comprises an outer race (5) having an inner periphery in which double-row outer raceway surfaces (13, 14) are formed; a hub wheel (1) and an inner race (2) having outer peripheries in which double-row inner raceway surfaces (7, 8) opposed to the outer raceway surfaces (13, 14) are formed; and double-row rolling elements (3, 4) interposed between the outer raceway surfaces (13, 14) of the outer race (5) and the inner raceway surfaces (7, 8) of the hub wheel (1) and the inner race (2). A shaft hole (28) of the hub wheel (1) is formed into a cylindrical shape, and a male spline (26) is formed on an outer periphery of a stem section (27) of the outer joint member (15) so that the stem section (27) of the outer joint member (15) is press-fit into the shaft hole (28) of the hub wheel (1). With this, recesses caused to closely fit on the male spline (26) with interference are formed in the shaft hole (28) of the hub wheel (1), whereby the hub wheel (1) and the outer joint member (15) are separably coupled to each other.
    • 提供了一种小型,重量轻,低成本,高可靠性的驱动轮轴承装置,不需要锥形花键,并且消除花键配合部分中的周向间隙,从而防止异常噪音。 用于驱动轮的轴承装置包括具有内周的外座圈(5),其中形成双列外滚道表面(13,14); 具有外周的轮毂轮(1)和内座圈(2),其中形成有与所述外座圈表面(13,14)相对的双列内滚道表面(7,8) 和位于外圈(5)的外滚道表面(13,14)和轮毂轮(1)的内滚道表面(7,8)之间的双列滚动元件(3,4)和内圈 (2)。 轮毂轮(1)的轴孔(28)形成为圆筒状,外花键(26)形成在外侧接头构件(15)的杆部(27)的外周,使得 外接头构件(15)的杆部(27)压配合到轮毂(1)的轴孔(28)中。 由此,在轮毂轮(1)的轴孔(28)上形成有与干式花键(26)紧密配合的凹部,轮毂轮(1)和外侧接头构件(15) 彼此可分离地耦合。