Patent ID: 7591473

Claim:
A folding bicycle comprising: a frame ( 1 ); a front fork; a rear fork ( 2 ); a front wheel ( 9 ) connected with the frame ( 1 ) via the front fork; and a rear wheel ( 8 ) connected with the frame ( 1 ) via the rear fork ( 2 ); wherein a support bar ( 5 ) is installed on the rear fork ( 2 ), the support bar ( 5 ) rests against the frame ( 1 ); wherein the frame ( 1 ) includes a beam ( 3 ), the beam ( 3 ) is S-shaped when viewing from the top; a folding joint ( 4 ) is installed on the beam ( 3 ); a hinge seat ( 15 ) is installed at the rear bottom part of the beam ( 3 ), the hinge seat ( 15 ) is hinged with the rear fork ( 2 ) via a hinge axle ( 6 ), the hinge axle ( 6 ) is mounted within the hinge seat ( 15 ); a central axle ( 7 ) is installed at the rear bottom part of the beam ( 3 ) and at the front of the hinge seat ( 15 ); the hinge axle ( 6 ) is tilted by an acute angle with respect to the central axle ( 7 ) of the frame ( 1 ).