Expandable platform cart
AssigneeSannwsg Inc
InventorQingyun Zhang
Life of this patent
Estimating the term…
Abstract
The present disclosure relates to an expandable platform cart, the core of which comprises a frame, a double-tier load-bearing platform, and an extension system. The double-tier platform supports categorized storage: the lower tier holds heavy items to lower the center of gravity, while the upper tier stores lightweight items; an X-shaped telescopic frame features a linked folding mechanism, allowing volume reduction for transport in a single step. An extension plate achieves rotational storage through oblong holes and a connecting shaft, working in tandem with the tension assembly to automatically tension and support the unfolded state.
Claims11
An expandable platform cart, comprising:
- a first load-bearing platform and a second load-bearing platform;
- a cart body and an extension plate, wherein
- the extension plate has a connecting end and an extension end, and the connecting end of the extension plate is rotatably mounted to the cart body through a pivot connection structure, enabling the extension plate to switch between an unfolded state and a stored state;
- and
- the pivot connection structure comprises:
- an oblong hole arranged at the connecting end of the extension plate;
- a mounting base fixed to the cart body and provided with a mounting slot and coaxially opposed connecting holes;
- and
- a connecting shaft, which passes through the oblong hole and the connecting holes to operably mount the extension plate within the mounting slot along a length direction of the oblong hole;
- wherein when the extension plate is in the stored state, the connecting end of the extension plate and the mounting base achieve abutment and engagement through displacement of the oblong hole relative to the connecting shaft;
- wherein the cart body comprises two X-shaped telescopic frames, two cart frames each comprising two vertical rods and a horizontal rod connected between the two vertical rods;
- wherein a top portion of each of the two vertical rods of each of the two cart frames is movably sleeved with a respective fixing sleeve and each of the respective fixing sleeves is movably sleeved with a respective support rod;
- wherein the X-shaped telescopic frames and the second load-bearing platform are mounted on the support rods, and the cart body is configured as a double-tier cart;
- by removing the fixing sleeves and the support rods and mounting the X-shaped telescopic frames on the vertical rods, the cart body is configured as a single-tier cart.
Dependencies are inferred from the claim text.