US 12,722,677 B2Granted

Folding frame and wagon using the same

AssigneesRui Cheng, Xuefeng ZHeng

InventorsRui Cheng, Xuefeng Zheng

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Abstract

The folding frame includes a first stand assembly arranged along a length direction, a second stand assembly arranged along a width direction, and a bottom frame assembly. The stand assemblies include cross-arranged telescopic rods and connecting members that enable folding and unfolding of the frame. The bottom frame assembly includes multiple connecting rods arranged in an X-shaped configuration to provide enhanced support and stability. The bottom frame assembly is detachably connected to the stand assemblies through connectors and pull rods. During use, the frame is unfolded and supports a box body for carrying goods, while during storage, the frame is collapsed without increasing overall height or package size. The structure improves compactness, stability, and ease of transportation and storage.

Claims20

Dependent claims

A folding frame, wherein said folding frame comprises a first stand assembly, a second stand assembly and a bottom frame assembly;

and
wherein, said first stand assembly is arranged along a length direction of said folding frame, and comprises two groups of first telescopic assemblies and a group of first connecting assembly, wherein any one of said two groups of first telescopic assemblies comprises a first connecting rod and a first telescopic rod, and said first connecting rod and said first telescopic rod are distributed in a cross shape;
and said first connecting assembly consists of two first connecting rockers;
and
wherein, said second stand assembly is arranged along a width direction of said folding frame, and comprises two groups of second telescopic assemblies, wherein any one of said two groups of second telescopic assemblies comprises a second connecting rod and a second telescopic rod, and said second connecting rod and said second telescopic rod are distributed in a cross shape;
and
wherein, said bottom frame assembly comprises two groups of third connecting assemblies, each group of third connecting assemblies consists of at least four third connecting rods and a third connector, and at least four of said third connecting rods are distributed in an X shape as a whole;
and
wherein, a first connector and a second connector are respectively arranged at joints of said first stand assembly and said second stand assembly;
and said bottom frame assembly is detachably connected to said first stand assembly and said second stand assembly through said second connector;
and said bottom frame assembly is detachably connected with said first stand assembly through at least two pull rods, and bottom ends of said pull rods are respectively hinged with one of said third connecting rods in said two groups of third connecting assemblies;
and top ends of said pull rods are respectively hinged with said first connecting assembly.

9 more elements

A folding wagon, wherein said folding wagon comprises a folding frame and a box body;

and
said folding frame comprises a first stand assembly, a second stand assembly and a bottom frame assembly;
and said first stand assembly is arranged along a length direction of said folding frame, and comprises two groups of first telescopic assemblies and a group of first connecting assembly, wherein any one of said two groups of first telescopic assemblies comprises a first connecting rod and a first telescopic rod, and said first connecting rod and said first telescopic rod are distributed in a cross shape;
and said first connecting assembly consists of two first connecting rockers;
and wherein, said second stand assembly is arranged along a width direction of said folding frame, and comprises two groups of second telescopic assemblies, wherein any one of said two groups of second telescopic assemblies comprises a second connecting rod and a second telescopic rod, and said second connecting rod and said second telescopic rod are distributed in a cross shape;
and wherein, said bottom frame assembly comprises two groups of third connecting assemblies, each group of third connecting assemblies consists of at least four third connecting rods and a third connector, and at least four of said third connecting rods are distributed in an X shape as a whole;
and wherein, a first connector and a second connector are respectively arranged at joints of said first stand assembly and said second stand assembly;
and said bottom frame assembly is detachably connected to said first stand assembly and said second stand assembly through said second connector;
and said bottom frame assembly is detachably connected with said first stand assembly through at least two pull rods, and bottom ends of said pull rods are respectively hinged with one of said third connecting rods in said two groups of third connecting assemblies;
and top ends of said pull rods are respectively hinged with said first connecting assembly;
and
said box body has a rectangular structure and is detachably fixed inside said folding frame.

9 more elements

A method for carrying goods, comprising providing a folding wagon, wherein said folding wagon comprises a folding frame and a box body;

and said folding frame comprises a first stand assembly, a second stand assembly and a bottom frame assembly;
and said first stand assembly is arranged along a length direction of said folding frame, and comprises two groups of first telescopic assemblies and a group of first connecting assemblies, wherein any one of said two groups of first telescopic assemblies comprises a first connecting rod and a first telescopic rod, and said first connecting rod and said first telescopic rod are distributed in a cross shape;
and said first connecting assembly consists of two first connecting rockers;
and wherein, said second stand assembly is arranged along a width direction of said folding frame, and comprises two groups of second telescopic assemblies, wherein any one of said two groups of second telescopic assemblies comprises a second connecting rod and a second telescopic rod, and said second connecting rod and said second telescopic rod are distributed in a cross shape;
and wherein, said bottom frame assembly comprises two groups of third connecting assemblies, each group of third connecting assemblies consists of at least four third connecting rods and a third connector, and at least four of said third connecting rods are distributed in an X shape as a whole;
and wherein, a first connector and a second connector are respectively arranged at joints of said first stand assembly and said second stand assembly;
and said bottom frame assembly is detachably connected to said first stand assembly and said second stand assembly through said second connector;
and said bottom frame assembly is detachably connected with said first stand assembly through at least two pull rods, and bottom ends of said pull rods are respectively hinged with one of said third connecting rods in said two groups of third connecting assemblies;
and top ends of said pull rods are respectively hinged with said first connecting assembly;
and said box body has a rectangular structure and is detachably fixed inside said folding frame;
and
the method comprises:
when in use, unfolding said first stand assembly and said second stand assembly;
and
fixing said bottom frame assembly under said first stand assembly and said second stand assembly;
and
placing said box body above said bottom frame assembly;
and
when in storage, taking down said box body;
and
gathering said folding frame for storage.

18 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/426,276Filed 29 Jan 2024
Published: US 2025/0242848 A131 Jul 2025
Granted: 1 Sep 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

B62B 3/007
Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor: coaster wagons
B62B 3/025
Involving parts being adjustable, collapsible, attachable, detachable or convertible: foldable roll containers
B62B 5/065
Adaptable for different users, e.g. by means of pivoting elements: by means of telescopic elements
B62B 2205/06
Hand-propelled vehicles or sledges being foldable or dismountable when not in use: foldable with a scissor-like mechanism