Patent ID: 6896084

Claim:
A wheeled vehicle, comprising a main frame, and a rear frame, wherein: the main frame includes a transverse bar and an upright bar; the transverse bar of the main frame has an upper face formed with two spaced through holes an a lower face formed with two spaced through holes aligning with the through holes of the upper face; the rear frame is detachably mounted on the main frame; the rear frame includes a crossbar detachably mounted on the transverse bar of the main frame; the rear frame further includes a shock-absorber having a first end secured on the rear frame and a second end detachably mounted on the upright bar of the main frame; the wheeled vehicle further comprises two insertion pins each extending through the respective through hole of the upper face of the transverse bar of the main frame, passing by the crossbar of the rear frame, and extending through the respective through hole of the lower face of the transverse bar of the main frame, so that the crossbar of the rear frame is fixed on the transverse bar of the main frame by the insertion pins; the two insertion pins fix a position of the crossbar of the rear frame relative to the main frame by closing off an open end of the transverse bar of the main frame preventing removal of the crossbar of the rear frame.