Various embodiments of a collapsible stroller configured to form at least a compact collapsed configuration are described. In some embodiments, the collapsible stroller includes a foldable frame assembly including a top frame pivotably coupled to a bottom frame such that the top frame is allowed to pivot along a longitudinal plane of the foldable frame assembly. The foldable frame assembly can include first strut assemblies pivotably coupled to the bottom frame at respective angled joints. The angled joints can each include a first axis of rotation that is angled relative to the longitudinal plane such that the strut assemblies pivot towards the longitudinal plane as the top frame pivots towards the bottom frame for forming the collapsed configuration. In some embodiments, the foldable frame assembly further includes a suspension system that also can pivot towards the longitudinal plane when the foldable frame assembly forms the collapsed configuration.

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.

The application discloses a frame of double-person baby carriage and a frame folding mechanism thereof The frame folding mechanism comprises an upper link, a lower link, a middle upright rod, two upper supporting rods, two lower supporting rods and two foot frames. The upper link and the lower link are spaced apart in a vertical direction; the middle upright rod is vertically connected between the upper link and the lower link; first ends of the two upper supporting rods are pivotally connected to both ends of the upper link; first ends of the two lower supporting rods are pivotally connected to both ends of the lower link; the foot frames are arranged in a vertical direction, top ends of the foot frames are pivotally connected to second ends of the upper supporting rods, bottom ends of the foot frames are pivotally connected to second ends of the lower supporting rods.

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.

An infant stroller apparatus includes a first and a second leg frame respectively having a first and a second side segment respectively connected fixedly with a first and a second coupling part, and a handle frame having a third side segment fixedly connected with a third coupling part. The second and third coupling parts are respectively connected pivotally with the first coupling part. Moreover, the infant stroller apparatus includes a first latch operable to rotationally lock the handle frame with respect to the first leg frame, a second latch operable to rotationally lock the second leg frame with respect to the first leg frame, and a linkage assembly respectively connected with the third coupling part and the second latch such that a folding rotation of the handle frame relative to the first leg frame urges an unlocking displacement of the second latch.

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 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.

A child push chair frame, such as a child push chair sports frame, buggy frame or similar vehicle frame for children, includes two rear wheels, at least one front wheel, and a pusher for pushing the child push chair frame. The child push chair frame may also include stabilizing struts that are foldable from a spread-apart travelling position into a fully folded-together transportation position and vice versa, and are latchable between these two positions and at least one further position, such as a parking position.

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.