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 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 or collapsed configurations and to selectively bias frame members toward movement towards the deployed or collapsed configurations based on frame orientation and operation of a release handle.

A collapsible stroller includes an upper handlebar assembly, a lower handlebar assembly connected to the upper handlebar assembly, a pair of rear leg frames, and a control module. The pair of rear leg frames is pivotally connected with the lower handlebar assembly on a left side and a right side of the stroller, respectively. The control module is configured to extend or retract the upper handlebar assembly in relation to the lower handlebar assembly via a first control mode, and further configured to collapse the pair of rear leg frames with respect to the lower handlebar assembly via a second control mode.

A compact collapsible stroller includes a main stroller frame. The main stroller frame includes a central frame hub, and a handle portion, a rear leg portion and a front leg portion that can separately be pivotally coupled to the central frame hub. The main stroller frame further includes an adapter portion attached to the handle portion. The stroller has an unfolded state for use and a folded state for storage. When the stroller changes from the unfolded state to the folded state, the adapter portion approaches a rear wheel set. The main stroller frame can be compactly folded using a series of pivot points, which may accept child seats of various configurations during installation. The seat can be folded in a manner suitable to the folding boundary size of the main stroller frame, thereby keeping the folding size of the stroller unit minimal.

An example stroller disclosed herein includes a joint carried by a frame. The joint includes a first housing, a second housing, and a third housing disposed between the first housing and the second housing. The first, second, and third housings respectively include first, second, and third openings. The stroller includes a lock including a lever and a bar. The bar is to simultaneously mater with the first, second, and third openings of the first, second, and third housings when the lever is in a first position to prevent rotation of the first housing and the second housing relative to the third housing, and to disengage from the first, second, and third openings of the first, second, and third housings when the lever is in a second position to enable the first housing and the second housing to rotate relative to the third housing to fold the stroller.

A compact collapsible stroller in accordance with the present disclosure includes a mobile cart and a seat coupled to the mobile cart. The mobile cart includes a rolling base and a foldable frame that fold inwardly and outwardly from the rolling base.

A child stroller includes a stroller frame having an unfolded state and a first folded state, and includes a left support frame on a left side, a right support frame on a right side. Each of the left support frame and the right support frame includes a first bottom frame and a second bottom frame being a telescopic rod assembly, and includes an upper rod with a lower end portion connected to one of the second wheel assemblies and a lower rod disposed below the upper rod and slidably connected to the upper rod in an up-down direction. When the stroller frame in the unfolded state, one of the first bottom frame and the second bottom frame is inclined upward from front to rear, and the other one is inclined upward from rear to front.

A stroller with a pivotable front wheel assembly. When folding the stroller, the front wheel assembly may pivot, exposing a flat surface which may be rested on the ground for easier storage of the stroller. A drive rod may drive the front wheel assembly to rotate during folding. A slider may move away from the front wheel assembly during folding, moving a rear tube into place and ultimately causing the drive rod to drive the front wheel assembly to rotate. A lock mechanism may be included to lock the frame into configuration.

A child stroller is provided. The child stroller comprises a stroller frame having an unfolded state and a first folded state, and comprising a left support frame on a left side, a right support frame on a right side. Each of the left support frame and the right support frame comprises a first bottom frame and a second bottom frame being a telescopic rod assembly, and comprising an upper rod with a lower end portion connected to one of the second wheel assemblies and a lower rod disposed below the upper rod and slidably connected to the upper rod in an up-down direction. When the stroller frame in the unfolded state, one of the first bottom frame and the second bottom frame is inclined upward from front to rear, and the other one is inclined upward from rear to front.

A baby stroller frame includes a base frame and a push rod assembly. A lower end of the pushrod assembly is rotatably connected to the base frame. A support linkage element is positioned between the pushrod assembly and the base frame, with its upper end rotatably connected to the pushrod assembly and its lower end slidably and rotatably connected to the base frame via a connecting assembly. The baby stroller frame also includes a locking mechanism for securing the lower end of the support linkage element with respect to the base frame when the baby stroller frame is in its unfolded state. A linkage unlocking assembly is provided to unlock the locking mechanism.

A baby stroller is provided and includes a stroller frame and a child carrier. The stroller frame includes two supports, a first fixing component, a second fixing component and a locking component. The first fixing component and the second fixing component are fixed on one and the other one of the two supports, respectively, and pivotally connected to each other. The locking component is movably disposed on the first fixing component and configured to engage with the second fixing component for restraining a folding action of the stroller frame. The child carrier is disposed on the stroller frame and pivotable relative to the stroller frame. The child carrier is for providing a releasing force to the locking component for disengaging the locking component from the second fixing component to allow the folding action of the stroller frame during a pivotal movement of the child carrier relative to the stroller frame.