| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a motorcycle wherein only air can be communicated between the inside and the outside of a gear case without increasing the size of the gear case. <P>SOLUTION: The gear case 63 includes a gear case body 100 and a gear case cover 130. The gear case body 100 includes a breather chamber 201 of a labyrinth structure which continues in a circumferential direction of a rear wheel and extends in an upward and downward direction. The top end of the breather chamber 201 is in communication with a breather path 220 and is open to atmospheric air while a bottom end of the breather chamber 201 is in communication with a gear chamber 63A through a slit 210 extending in a width direction of the rear wheel. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
