A collapsible chassis for strollers includes a base frame supporting at least one front post and at least one rear post with wheel assemblies. The base frame further support at least one handle tube. An actuation element is supported by the base frame and is actuated by the user to move the chassis from the open condition to the closed condition. The actuation element is movable with respect to both the handle tube and the movable post and is connected by way of a first kinematic connection element to the movable post and by way of a second kinematic connection element to the handle tube. Actuating the actuation element causes the rotation of the movable post and handle tube. A third kinematic connection element is provided which includes an articulation element adapted to cause a motion of mutual approach in a transverse direction of the two rear posts.

A stroller frame has a body, two front wheel assemblies, a seat supporting mechanism, and a rear wheel folding mechanism. The two front wheel assemblies are respectively and pivotally disposed on the body. The seat supporting mechanism is moveably disposed below a seat plate of the body. The rear wheel folding mechanism is disposed on a rear side of the body and has two rear wheel assemblies and two linkage assemblies. The two rear wheel assemblies are moveably disposed on a first transverse rod of the body. The two linkage assemblies are respectively disposed on two ends of a second transverse rod of the body. When the stroller frame is folded, two rear wheels of the two rear wheel assemblies move between two front wheels of the two front wheel assemblies to decrease the overall width and volume of the folded stroller frame.

A cart, at least a folding joint mechanism disposed among an upper frame, a bottom frame and a rear wheel frame, comprising a bottom frame joint having a first arc-rack, an upper frame joint having a second arc-rack, a rear wheel frame joint, and a linkage gear unit disposed between the upper and bottom frame joints, the linkage gear unit having a first and a second gears rotating coaxially and engaging with the first and second arc-rack respectively, and the first and second gears having the numbers N1 and N2 of gear teeth respectively, and wherein N1 and N2 are greater than or equal to 6.

A stroller includes a frame, a first locking mechanism, a folding mechanism and a second locking mechanism. The frame is configured to be folded and unfolded between a folded state and an unfolded state. The first locking mechanism is disposed on the frame and for locking the unfolded frame and restraining the frame from being folded when the frame is in the unfolded state. The folding mechanism is movably disposed on the frame and connected to the first locking mechanism for driving the first locking mechanism to allow the frame to be folded. The second locking mechanism is disposed on the folding mechanism and separably abuts against the frame for restraining the folding mechanism from driving the first locking mechanism so as to lock the unfolded frame.

A transportation device includes a frame and a seat module. The seat module includes a seat body, a calf rest and an operating member. The seat body is pivotally connected to the frame and the seat body has a first engaging portion. The calf rest is pivotally connected to the seat body. The operating member has a press portion, an elastic portion, a pivotal portion and a second engaging portion. The operating member is pivotally connected to the calf rest by the pivotal portion. The elastic portion abuts against the calf rest. The second engaging portion engages with the first engaging portion, such that the calf rest is kept at a predetermined position.

A child carriage including a carriage frame to support a removable child seat above a riding surface, the carriage frame having a lower frame portion comprising at least one front leg, a first rear leg, and a second rear leg. The carriage includes a soft goods seat assembly is provided to removably couple to the frame, wherein the soft goods seat assembly includes a soft goods seat having a seatback and a seat pan that extends from the seatback at a seat bight, and a first leg coupler and a second leg coupler disposed at first and second sides of the soft goods seat, respectively, to removably attach to the first and second rear legs, respectively, so as to couple the seat bight to the first and second rear legs and such that the first and second leg couplers are positionally fixed relative to the first and second rear legs, respectively.

A child stroller apparatus includes a handle frame having a first side segment fixedly connected with a first coupling part, a front leg frame having a second side segment fixedly connected with a second coupling part, a rear leg frame having a third side segment fixedly connected with a shell, the third side segment being respectively connected pivotally with the first and second coupling parts, a linking member received at least partially inside the shell and respectively connected pivotally with the first and second coupling parts about two different pivot axes, the handle frame and the front leg frame being thereby rotationally linked to each other, and a latch disposed adjacent to the first coupling part, the latch being operable to rotationally lock the handle frame with respect to the rear leg frame so as to lock the infant stroller apparatus in an unfolded state.

A folding perambulator has a wheeled foldable frame 1 with front frame members 10 which may be folded toward rear frame members 5 when a seating member 2 is removed from the frame 1. A handle 7 is also arranged to be foldable downwardly toward the rear wheels 3. A locking mechanism 6 is provided to permit the frame and handle to be folded. The handle includes a rotatable member 25 which, in one direction of rotation, is arranged to adjust the length of the handle by permitting telescoping of tubular members 26, 27, and in an opposite direction of rotation to cause the locking mechanism, which includes a dog clutch 80, to be disengaged to permit the frame and handle to be folded to a closed position.

A stroller frame having forwardly extending right and left side front supports, rearwardly extending right and left side rear supports, and upwardly extending right and left side handle supports moveable connected to permit movement of the frame between deployed and collapsed orientations, and a downwardly folding seat frame connected to the front and rear supports having right and left side fold mechanisms which are configured to lock the frame in the deployed configuration, apply a biasing force to fully deploy the seat frame during the unfolding movement, and isolate the biasing force while applying a folding force to the seat frame during the folding operation, actuation of the fold mechanisms based on frame orientation and position of a release handle.

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.