| 摘要 |
A foldable bicycle frame contains a seat tube, a lower lateral tube, a steer tube, rear lateral tubes, a bottom bracket shell. Articulated coupling is located between the seat tube and lower lateral tube, lower lateral tube is made from two tubes of smaller diameter, tubes by one end are connected rigidly to the steer tube from two sides, other ends of the tubes are hingedly connected to the bottom bracket shell; also the frame contains a detachable upper tube, which from one side contains a disconnector, and from another side it is connected by hinge with the seat tube, and two pairs of rear tubes, one of which has at the end an articulated coupling with the seat tube, and another pair - articulated couplings with bottom bracket shell. |
