| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a dustproof structure of a working vehicle capable of exhibiting a sufficient dustproof function over a long period of time, through rational configuration of a seal structure. <P>SOLUTION: The dustproof structure includes operation levers 35 each with a grip operation portion located on a machine body outer side of a frame 15 while each of the operation levers 35 is inserted in an insertion hole 33 formed in the frame 15, wherein each of the operation levers 35 is configured to be swingable around an axis of a support shaft 38, with a cylindrical boss portion 37 provided in a base end thereof, turnably supported by the support shaft 38, the support shaft 38 is provided adjacent to the frame 15, and a seal member 39 is provided for blocking a space between an outer periphery of the boss portion 37 and the frame 15 while slidingly contacting both sides in a radial direction of the outer periphery of the boss portion 37. <P>COPYRIGHT: (C)2013,JPO&INPIT |
