| 摘要 |
It comprises a rear frame with two side wheels (4 and 5), joined to a front wheel support (6) by means of a beam (7) and is articulated (8) from the top to the sides of a U-shaped handlebar (9), the sides (2 and 3) of the rear frame (1) being joined by means of the articulation of a U-shaped element (10) above which is the mentioned beam (7). The foldable chassis is characterised by the fact that the beam (7) is telescopic (11 and 13) and has elements connected to parts of the chassis which make it automatically retract when the beam (7) is folded. Said elements comprise an articulated connecting element (17) joined to one of the telescopic sections (11) of the beam (7), joined to the U-shaped element (10) of the chassis, and which is articulated to the other telescopic section of the beam by means of a rod (19). |
