| 摘要 |
A collapsible stroller comprises a frame and a seat unit 2, wherein the frame comprises: an upper frame unit consisting of two upper frame tubes 11; two connecting members 15 connecting the two upper frame tubes to two front legs 30 and each connecting member having a first locking device 16; two base frame tubes 33 pivotally coupled to the front legs; two rear legs 35 pivotally coupled between the connecting members and the base frame tubes; and the seat unit comprises a seat portion 21, a pivotal backrest portion (23, figure 2B), and two linking members (29) disposed at two sides of the seat unit, one end of each linking member being pivotally coupled to the frame and the other end being pivotally coupled to the seat portion so as to pivotally mount the seat unit to the frame, wherein when the upper frame tubes are pivotally collapsed with respective to the front legs, the upper frame unit, the front legs, the rear legs, the base frame tubes and the seat unit will move toward one another into a collapsed state in which they are stacked in a substantially parallel manner (figure 5E). The stroller may further comprise a biasing device, such as a torsion spring (50, figure 4A), disposed between a supporting tube of the seat unit and the front leg to prevent the stroller being used before it reaches its expanded and locked state. |
