| 摘要 |
PROBLEM TO BE SOLVED: To provide a technique for reducing the cost of a shaft drive type motorcycle having a labyrinth structure hardly causing oil leakage from a gear box. SOLUTION: A shaft drive type motorcycle 10 includes: a swing arm 28 for rockingly supporting a rear wheel 31; a drive shaft 32 provided in the swing arm 28, a gear box 124 provided in a rear part of the swing arm 28; a rear wheel axle 40 provided in the gear box 124; a pulsar ring 216 provided on the rear wheel axle 40 to measure the wheel speed of the rear wheel 31; and labyrinth wall parts 231, 233 integrated with the inner side in the radial direction of the pulsar ring 216. COPYRIGHT: (C)2010,JPO&INPIT
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