A foldable cart having a rectangular frame composed of a front wall and a back wall which are symmetric with each other, two symmetric side walls, and a bottom frame. Four wheels are disposed at four corners of a bottom surface of the rectangular frame. The front wall has two sliding seats, two vertical tubes, a folding assembly, two upper fixing seats and two lower fixing seats. Each side wall has two X-shaped side assemblies, a middle support tube, and a sliding sleeve slidably disposed around the middle support tube, wherein middle fixing seats are disposed at an upper end and a lower end of the middle support tube respectively, and each X-shaped side assembly is formed by two side cross tubes which are riveted together.

A baby stroller is provided, which includes a front wheel assembly, rear wheel assembly and a folding assembly. The folding assembly includes two lateral folding holders; each includes an upper-front fence tube, lower-front fence tube, upper-back fence tube, lower-back fence tube and a middle holder. The middle holder includes an upper folding joint, lower folding joint and a support stand rod disposed therebetween. The front ends of the upper-front and lower-front fence tubes are pivotally connected to a front wheel holder respectively. The rear ends of the upper-front and lower-front fence tubes are pivotally connected to the front ends of the upper and lower folding joints. The rear ends of the upper-back and lower-back fence tubes are pivotally connected to the rear wheel holder respectively. The front ends of the upper-back and lower-back fence tubes are pivotally connected to the rear ends of the upper and lower folding joints.

A convertible cargo case for a wagon is provided. The cargo case has a housing and a frame. The frame has frame members in a first plane and frame members in a second plane substantially parallel to the first plane. Cross members connect the frame members in the first plane with the frame members in the second plane. The housing has a first side wall, a second side wall, a third side wall, a fourth side wall, and a bottom wall defining a cavity. The housing is releasably secured to the frame with a plurality of locks. The cargo case is positioned adjacent a rear of the wagon in a cargo use configuration, and the wagon is positioned partially within the cavity of the housing in a storage configuration.

Embodiments disclosed herein describe systems and methods for an interlocking wagon. In embodiments, the interlocking wagon may include a first component and a second component.

A collapsible cart may include a handle, a first supporting frame, and a second supporting frame. In one embodiment, the handle is movably secured at the first supporting frame, and the first supporting frame and the second supporting frame are connected with a connecting member. The connecting member may include a plurality of connecting units. In one embodiment, the collapsible cart further includes a fabric secured at a receiving space created by the supporting frames and the connecting members on both sides. It is important to note that when the cart is fully unfolded, the first and second connecting units are substantially perpendicular to the second supporting frame and the first supporting frame respectively to strengthen the connecting member.

Provided herein is an infant wagon having improved convenience of use, wherein the infant wagon includes a front frame, a rear frame, a support frame, side frames, a front handle frame, and a rear handle frame, and is configured such that the axial distance between front wheels and rear wheels thereof is reduced, whereby it is possible to easily switch between a usage mode and a storage mode, such that the structure of the wagon wheel unit is simplified to reduce production costs, whereby it is possible to achieve product competitiveness, such that, when the wheels are worn or damaged, it is possible to easily replace the wheels, and such that the front wheels and the rear wheels are compatible with each other and are interchangeable.

A convertible cargo case for a wagon is provided. The cargo case has a housing and a frame. The frame has frame members in a first plane and frame members in a second plane substantially parallel to the first plane. Cross members connect the frame members in the first plane with the frame members in the second plane. The housing has a first side wall, a second side wall, a third side wall, a fourth side wall, and a bottom wall defining a cavity. The housing is releasably secured to the frame with a plurality of locks. The cargo case is positioned adjacent a rear of the wagon in a cargo use configuration, and the wagon is positioned partially within the cavity of the housing in a storage configuration.

A portable folding wagon includes a wagon frame with a folding frame and wheels. The folding frame has four scissor mechanisms, each mechanism has at least a scissor unit. The top portions of two adjacent scissor mechanisms are rotatably connected by a top connecting base, the bottom portions are rotatably connected by a bottom connecting base; the bottom connecting base is rotatably connected to a support rod, the bottom connecting base is disposed with a through hole, the top periphery of the through hole of the bottom connecting base extends upwardly to form a surrounding wall for the support rod to pass through, the bottom end of the support rod passes through the surrounding wall and the through hole and connects to the wheel, the top end of the support rod is rotatably connected to a sliding connecting piece, the sliding connecting piece is slidably connected to the scissor unit.