| 摘要 |
<p>A hub unit has a rotation speed detection device having a pulser ring that includes a to-be-detected section and rotates together with a rotation-side member, a sensor head section that detects a variation in the rotation speed of a wheel by means of the to-be-detected section of the pulser ring, and a cover body that has a stationary section fitted and fixed to a stationary-side member and also has an annular cover section extending from one end of the stationary section toward the rotation-side member. A seal section is formed between an inner peripheral end of the cover section and the rotation-side member.</p> |
