| 摘要 |
PROBLEM TO BE SOLVED: To provide a shaft frame for a two-wheeled vehicle that is telescopically movable and free of play during travel. SOLUTION: The shaft frame for a two-wheeled vehicle comprises a front frame mounting part 11 connected to a front frame 3, a rear frame mounting part 12 connected to a rear frame 4, and a shaft body 10 disposed between the front frame mounting part 11 and the rear frame mounting part 12 to connect them. The shaft body 10 has a plurality of pipe parts 13 and 14 arranged and configured for telescopic motion like a slidingly extensible rod, and an extension holding means 30 disposed in the plurality of pipe parts 13 and 14 to hold them in an extended state when they are put into the state. Each pipe part 13, 14 includes a V-shape in an arbitrary section perpendicular to the length. The V-shape restrains movement between the pipes 13 and 14 and thus makes the shaft frame 1 free of play.
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