| 摘要 |
PROBLEM TO BE SOLVED: To provide a concrete structure of a hub unit for a driving wheel with a state quantity measuring device aiming at the fourth generation hub unit, which is a structure capable of measuring accurately the state quantity. SOLUTION: A core bar 33 to which an encoder 27a is attached and fixed is fitted and fixed on the second cylindrical surface part 25 existing in a space sealed by a seal ring 15 on a middle part outer circumferential surface of a driving shaft member 11. A pair of sensors 28a, 28b are supported inside a cover 16 constituting the seal ring 15, and each detection part of both sensors 28a, 28b is faced close to the outer circumferential surface of the encoder 27a which is a surface to be detected. An aperture 36 is provided between the encoder 27a and the second step surface 26 of the driving shaft member 11. The problem can be solved by adopting this constitution. COPYRIGHT: (C)2008,JPO&INPIT
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