Abstract: In a tricycle in which left and right front forks (30L, 30R) for rotatably supporting left and right front wheels (WFL, WFR) respectively are disposed on laterally opposite sides of a handle post (21) to extend upwards and downwards and are turnably carried on left and right side posts (29L, 29R) supported on the handle post (21), and an upper link (35U) connected at its opposite ends to the left and right side posts (29L, 29R) and a lower link (35D) connected at its opposite ends to the left and right side posts (29L, 29R) are turnably connected at their central portions to the handle post (21), the left and right side posts (29L, 29R) are disposed in an inclined state, so that the distance between both of the side posts (29L, 29R) is decreased toward their upper portions. Thus, the tricycle can be braced sufficiently by inner one of the front wheels during bank-traveling thereof.

Abstract: A tricycle includes left and right front wheel support members which rotatably support left and right front wheels, respectively, and which are disposed on laterally opposite sides of a handle post and pivotally supported on left and right leg members which are supported by the handle post, a steering shaft which is connected to the front wheel support members to steer the front wheels in response to the turning operation of the steering shaft, and a driven wheel supported at a rear portion of a vehicle body frame structure. In this tricycle, a banking travel is possible, leading to an enhanced steering travelability. The handle post 21 and the left leg member 29L are connected to each other through a pair of left upper and lower links 38L, 39L to form a left parallel link arrangement 37L, while the handle post 21 and the right leg member 29R are connected to each other through a pair of right upper and lower links 38R, 39R to form a right parallel link arrangement 37R, 94R.