Patent ID: 7625002

Claim:
A vehicle frame, comprising: a head tube; a fork including a steerer that extends rotatably through said head tube, that has an axis of rotation, and that is rotatable relative to said head tube within a first angle; and a rotation limiting mechanism operable so as to limit rotation of said steerer relative to said head tube, said rotation limiting mechanism including a first positioning unit that is coupled to one of said head tube and said steerer and that is formed with a through-hole, a second positioning unit that is coupled to the other of said head tube and said steerer and that is formed with a groove, said groove extending circumferentially about the axis of rotation of said steerer and having opposite ends, said opposite ends of said groove being angularly spaced apart from each other by a second angle less than the first angle, and an engaging unit engaging releasably said first and second positioning units to thereby limit rotation of said steerer relative to said head tube; wherein said steerer is rotatable relative to said head tube to a first aligned position, where said groove in said second positioning unit is registered with said through-hole in said first positioning unit; and wherein said engaging unit includes a shaft member that extends fittingly and movably through said through-hole in said first positioning unit, said shaft member of said engaging unit being movable relative to said first positioning unit at a first position, where said shaft member of said engaging unit extends into said groove in said second positioning unit when said steerer is disposed at the first aligned position to thereby limit rotation of said steerer relative to said head tube within the second angle.