Abstract: A stroller frame includes two side frame units that are symmetrically arranged. Each of the side frame units includes a handle rod, a front leg, a rear leg rod, and a support rod. The front leg includes a first front leg rod connected pivotally to an end of the handle rod, and a second front leg rod connected pivotally to the first front leg rod and adapted to be connected fixedly to a seat member. The rear leg rod is connected pivotally to the handle rod. The support rod has an end connected pivotally to the rear leg rod, and an opposite end adapted to be connected pivotally to the seat member. The support rod is connected indirectly and pivotally to the second front leg rod.

Abstract: A stroller frame includes a handle assembly, a front leg assembly and a rear leg assembly having rotating end hubs which are pivotably connected to each other about a hub axis to be rotated so as to allow the stroller frame to transform between folded and unfolded states. A tray mounting assembly is coupled with a tray, is rotatably mounted on one of two rotating end hubs, and is rotated along with the relative rotation of the end hubs to convert the tray to folded and unfolded positions. A tray latching assembly is disposed to retain and support the tray mounting assembly to keep the tray stable in the unfolded position when the stroller frame is in the unfolded state.

Abstract: A stroller frame includes a handle assembly, a front leg assembly and a rear leg assembly having rotating end hubs which are pivotably connected to each other about a hub axis to be rotated so as to allow the stroller frame to transform between folded and unfolded states. A tray mounting assembly is coupled with a tray, is rotatably mounted on one of two rotating end hubs, and is rotated along with the relative rotation of the end hubs to convert the tray to folded and unfolded positions. A tray latching assembly is disposed to retain and support the traymounting assembly to keep the tray stable in the unfolded position when the stroller frame is in the unfolded state.

Abstract: A stroller frame includes two side frame units that are symmetrically arranged. Each of the side frame units includes a handle rod, a front leg, a rear leg rod, and a support rod. The front leg includes a first front leg rod connected pivotally to an end of the handle rod, and a second front leg rod connected pivotally to the first front leg rod and adapted to be connected fixedly to a seat member. The rear leg rod is connected pivotally to the handle rod. The support rod has an end connected pivotally to the rear leg rod, and an opposite end adapted to be connected pivotally to the seat member. The support rod is connected indirectly and pivotally to the second front leg rod.