| 摘要 |
PROBLEM TO BE SOLVED: To solve such a problem that a wheelchair bicycle gives impact on a body due to an uneven traveling surface since wheels are directly mounted on a seat frame, gives an uncomfortable ride to make a passenger sick, and causes heavy steering operation.SOLUTION: A wheelchair bicycle includes: a front side wheel shaft (2) which pivotally supports a pair of front side wheels (1) disposed on both sides to be separated from each other in such a manner to individually and freely rotate forward and reversely and keeps between the front side wheels (1); a pair of shaft bearings (7) disposed and mounted on both sides of the front side wheel shaft (2) to be separated from each other; a guide rod (9) attached to the shaft bearing (7); a spring (10) fitted to the guide rod (9); and a seat receiver (8) attached to both sides of a seat (11), and can travel as a driver steps on a pedal while a passenger is seated on the seat (11). In the wheelchair bicycle, a support bearing (3) is mounted in the center of the front side wheel shaft (2), bearings (18) are provided on upper and lower parts of the support bearing (3) so as to set a main frame (5), and a support shaft (6) is inserted into the support bearing. |
