TWIN-WHEEL BICYCLE

PROBLEM TO BE SOLVED: To provide a twin-wheel bicycle, obtaining stable cornering in high-speed running, and obtaining stable running on small projecting and recessed parts, and restraining sinking over a fixed size of two wheels when the road surface has large projecting and recessed parts to thereby maintain sure handling. SOLUTION: This twin-wheel bicycle includes: a main frame 4 extended in the longitudinal direction to form the whole skeleton; and a two-wheel elevating support and restraining means 7 supporting two wheels at a space from each other in the axial direction to vertically move and restraining two wheels from sinking at the same time. The two-wheel elevating support and restraining means includes: a wheel support 11 supporting two wheels at a space in the axial direction at the other end of an elevating part 10 composed of a stationary body 8 and a pair of mover 9 independently moving vertically to the stationary body; energizing means 12 mounted between the stationary body and the movers and individually provided on the two wheels; and a sinking restraining means 20 formed of a fluid absorbing part and provided in a fluid passage connecting hydraulic dampers provided on the two wheels, individually and the cylinder chambers thereof. COPYRIGHT: (C)2006,JPO&NCIPI