A child stroller apparatus includes a rear leg 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 handle frame having a third side segment fixedly connected with a third coupling part, the second and third coupling parts being respectively connected pivotally with the first coupling part, a front guard pivotally connected with the first coupling part, a first linking assembly rotationally coupling the second side segment with the third side segment, and a second linking assembly rotationally coupling the front guard with the second side segment. The front leg frame, the handle frame and the front guard are linked and rotatable relative to the rear leg frame during folding and unfolding of the child stroller apparatus.

A collapsible seat assembly is mounted on a frame of a stroller, and includes a joint member, a backrest support member, a leg support member and a locking mechanism. Each of a pivot portion of the backrest support member and a pivot portion of the leg support member is pivotably mounted on the joint member. The locking mechanism is disposed between the pivot portions to lock or unlock the backrest and leg support members. The locking mechanism is configured to be actuated to move from a locking position to an unlocking position by the operation of the frame of the stroller from an unfolded state to a folded state. A stroller having the collapsible seat assembly is also disclosed.

A stroller frame includes a seat pan, an operating handle movably coupled to the seat pan, and two opposite foldable side frame units each including a front leg, a handle rod, a rear leg that has a top end pivotally connected to the handle rod, a bottom leg that has a lower end pivotally connected to the rear leg, and a sliding basket tube that is movably coupled to said seat pan and slidably connected to said rear leg. To unfold the stroller frame, said operating handle is pushed downward to drive said seat pan to pivot downward so that an angle between said front leg and said bottom leg of each of said side frame units increases until said stroller frame is converted from a folded state to an unfolded state.

A foldable stroller frame includes a connection unit interconnecting two opposite foldable side frame units, each of which includes a front leg and a handle rod connected pivotally to each other, and a rear leg connected pivotally to the handle rod. The connection unit includes four bottom rods each having a first end connected pivotally to a connecting seat, and a second end connected pivotally to a respective one of the front and rear legs of the side frame units. When the connecting seat is pulled upwardly from a lower used position, the second ends of the bottom rods move radially toward each other, whereby the side frame units are folded and move toward each other.

The invention is directed to a baby carriage, comprising lateral articulated joints, each having a connection for a leg of a push bar, a front wheel strut and/or a rear wheel strut, of which at least two elements are pivotable relative to one another about an articulated axis extending transversely with respect to the travel direction, the connection for a first of at least two elements of an articulated joint which are pivotable relative to one another being connected in a rotatably fixed manner to an inner disk-shaped part of the articulated joint, and the connection for a second of the at least two elements of the articulated joint in question which are pivotable relative to one another being connected or coupled in a rotatably fixed manner to at least two housing end-face plates in parallel to the disk-shaped part, and/or to articulated plates of the articulated joint in question situated in between, the plates gripping the inner disk-shaped part at its two flat sides, wherein at least two housing end-face plates and/or articulated plates on both sides of the inner disk-shaped part may be pulled toward one another by means of a connecting part and thus frictionally and/or interlockingly pressed from both sides against the inner disk-shaped part of the articulated joint in order to lock the articulated joint, but by loosening the connecting part are releasable from the inner disk-shaped part to such an extent that the frictional and interlocking connection is released for relative adjustment of the articulated joint.

A baby stroller for transporting an infant at speeds faster than normal walking is disclosed. This baby stroller can be folded to make it easier to stow and transport. The folding mechanism, a unique feature of the design is directed toward compactness, ease of use, reliability, and reduction in manufacturing costs.

A baby stroller includes a frame having front and rear wheel supports, a seat rod, a push rod and a support rod. The front and rear wheel supports form a first rotating joint. The push rod includes upper and lower push rods, the lower push rod is connected to the first rotating joint. The lower push rod and the upper push rod form a second rotating joint. The support rod is rotatably connected with the upper push rod. The support rod is rotatably connected with the rear wheel support. The seat rod is rotatably connected with the front wheel support. The seat rod is rotatably connected with the support rod. Rotating the upper push rod around the second rotating joint drives the lower push rod, the support rod, the front wheel support, the rear wheel support and the seat rod to fold the stroller.

A collapsible stroller comprising a handle assembly, a front leg assembly and a rear leg assembly pivotably connected to one another such that the stroller is able to be moved between a folded configuration, where the front leg and handle assemblies are folded to positions substantially adjacent to the rear leg assembly, and an unfolded configuration, where the front leg and handle assemblies are unfolded to positions away from the rear leg assembly, and a link assembly comprising a front member and a rear member pivotally connected to one another, wherein the front member is pivotally connected to an intermediate portion of the front leg assembly and the rear member is pivotally connected to an intermediate portion of the rear leg assembly, such that when the stroller is moved to its folded configuration the front and rear members are folded toward each other to lie substantially adjacent to one another and the front and rear leg assemblies, and when the stroller is moved to its unfolded configuration the front and rear members are folded away from each other and the front and rear leg assemblies such that they are substantially coplanar with one another, and wherein the link assembly further comprises a biasing means for biasing the front and rear link members toward their unfolded positions.

A collapsible stroller comprising a handle assembly, a front leg assembly and a rear leg assembly pivotably connected to one another such that the stroller is able to be moved between a folded configuration, where the front leg and handle assemblies are folded to positions substantially adjacent to the rear leg assembly, and an unfolded configuration, where the front leg and handle assemblies are unfolded to positions away from the rear leg assembly, and a link assembly comprising a front member and a rear member pivotally connected to one another, wherein the front member is pivotally connected to an intermediate portion of the front leg assembly and the rear member is pivotally connected to an intermediate portion of the rear leg assembly, such that when the stroller is moved to its folded configuration the front and rear members are folded toward each other to lie substantially adjacent to one another and the front and rear leg assemblies, and when the stroller is moved to its unfolded configuration the front and rear members are folded away from each other and the front and rear leg assemblies such that they are substantially coplanar with one another, and wherein the link assembly further comprises a biasing means for biasing the front and rear link members toward their unfolded positions.

A folding hook structure comprising: a shell, fixed to the first object, and at least partially accommodates other parts of the folding hook structure; a rotating disk , fixed to the second object, and disposed in the shell to be rotatable around a rotation center in respect to the shell, with a folding hook groove disposed on a disk surface of the rotating disk, the folding hook groove including a circumferential section extending in a circumferential direction of the rotating disk with the rotation center as a center, and a radial section extending from the circumferential section along a radial direction of the rotating disk; a folding hook , disposed in the shell, and arranged movable between a locked position and a released position along the radial direction of the rotating disk, the folding hook being inserted in the folding hook groove.