| 摘要 |
A foldable stroller includes a seat frame unit, a horizontal wheel frame and a locking pin. The seat frame has a U-shaped lower end portion and a plate member formed with a through hole and connected to the lower end portion. The seat frame unit is supported inclinedly on the wheel frame in an unfolded position and is laid on the wheel frame in a folded position by means of a support frame unit. The front section of the wheel frame has a transverse socket unit so that the U-shaped lower end portion of the seat frame unit can be inserted into the socket unit. The socket unit has a receiving groove and a tubular member which is communicated with the receiving groove. The locking pin extends slidably into the tubular member through the through hole of the plate member of the seat frame unit in order to lock releasably the seat frame unit on the wheel frame in the unfolded position.
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