| 摘要 |
A cross bar type bicycle structure comprises a front wheel (1), a rear wheel (2) and a frame. The frame comprises a front main rod, a back main rod, a first fork rod, a second fork rod and two bottom rods. Two front fork rods (12) are branched from the tail end of the front main rod and used to fix the axle of the front wheel (1) of the bicycle. The back main rod is provided with a back straight rod (21), the head end thereof is used to connect with the bicycle chair tube, and the tail end thereof is connected with a drive axle (22). The first fork rod is an approximate double cross structure rod which can be a Y shaped structure rod or a V shaped structure rod. The branch sections are connected with the front main rod and the tail section is connected with the back main rod. The second fork rod is an approximate Y shaped structure rod whose branch sections are connected with the back main rod and whose straight bar section is connected with the front main rod. The straight bar section of the second fork rod crosses the branch sections of the first fork rod and makes the two intesected with each other. The two bottom rods (51) are respectively connected with the two ends of the drive axle (22) and respectively connected with the rail ends of the second fork rod. The rear wheel (2) of the bicycle is mounted between the two bottom rods (51). |
