Tricycle

A tricycle in which a steering shaft (27) leading to a steering handlebar (28) is turnably carried on a handle post (21) provided at a front end of a vehicle body frame assembly (F);

• 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 said handle post (21) to extend upwards and downwards and are turnably carried on left and right side posts (29L, 29R) supported on said handle post (21);
• said steering shaft (27) is connected to said front forks (30L, 30R) to enable the steering of said front wheels (WFL, WFR) in response to the turning operation of said steering shaft (27);
• an upper link (35U) connected at opposite ends thereof to the left and right side posts (29L, 29R) and a lower link (35D) disposed below the upper link (35U) and connected at opposite ends thereof to the left and right side posts (29L, 29R) are turnably connected at central portions thereof to said handle post (21);
• and a driven wheel (WR) is supported at a rear portion of the vehicle body frame assembly (F), characterized in that said left and right side posts (29L, 29R) are disposed in an inclined state so that the distance between both of said side posts (29L, 29R) is decreased toward upper portions thereof, and the lengths of said upper and lower links (35U, 35D) are set to be equal to each other, and an amount of protrusion, from the left and right side posts (29L, 29R), of lower brackets (40L, 40R) secured to the left and right side posts (29L, 29R) in order to connect the opposite ends of the lower link (35D) is set to be larger than an amount of protrusion, from the left and right side posts (29L, 29R), of upper brackets (39L, 39R) secured to the left and right side posts (29L, 29R) in order to connect the opposite ends of the upper link (35U).