| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a bearing device for a driving wheel, which prevents its troubles due to the generation of abnormal states, and accurately and safely makes the control of a vehicle posture by monitoring the state of the bearing device for the driving wheel. <P>SOLUTION: In the bearing device for the driving wheel, a hub disk 10, a constant speed universal joint 40, and a bearing 20 are combined as one unit. The hub disk 10 is fitted on the outer periphery of the stem portion 45 of the outer joint member 41 of the constant speed universal joint 40. An inner member 29 is composed of the outer joint member 41 and the hub disk 10. There are provided: rolling element revolution speed detecting means 50A, 50B for detecting the revolution speed of the rolling elements 22 arranged in at least one of an in-board side row and an out-board side row; and inner member rotation speed detecting means 51C, 51D for detecting the rotation speed of at least one of the hub disk 10 and the outer joint member 41. An abnormality judging means 52 is provided so as to compare the revolution speeds A, B detected by the rolling element revolution speed detecting means 50A, 50B with the rotation speed C, D detected by the inner member rotation speed detecting means 51C, 51D, and so as to output an alarm when both speeds are in a specified relation. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
