Vehicle tilt device when turning a front two-wheel bicycle

摘要

PROBLEM TO BE SOLVED: To provide a bicycle of a two-front-wheel steering type which is easy to ride for elderly people, by allowing a standing posture of the bicycle to be kept without being overturned when getting on the bicycle in a stopped state, and by mechanically inclining a bicycle body in a turning direction in response to steering of a handle and thereby enabling stable curve traveling.SOLUTION: In a two-front-wheel bicycle, a mechanism is provided in which, in leftward steering of a handle 11, a rod end Brg25 coupled to a pitman arm 21 fixed to a steering shaft 13 via a coupling collar 22 turns leftward, which causes a coupling tool 26 to move interlockingly therewith to cause a coupling member 24 fixed to a swing arm 31 to operate leftward, then the swing arm 31 swings and causes a coupling rod 46S coupled to the pitman arm 21 with a link ball Brg45 to move leftward simultaneously with inclination of a bicycle body 1 to turn a knuckle arm 44, and the coupling rod 46L moves leftward to turn front wheels 15L, 15R leftward. In this mechanism, unsteadiness of the bicycle body 1 is suppressed so that the bicycle body can be mechanically inclined in the turning direction, thereby enabling stable curve traveling.SELECTED DRAWING: Figure 9