Collapsible wagon with foldable handle and basket extension

A collapsible utility wagon with a push-back function device, comprising:

• a push-back function device assembly, and
• a collapsible utility wagon body assembly,
• wherein the push-back function device assembly is provided behind the collapsible utility wagon body assembly,
• wherein the push-back function device assembly comprises a rear wheel frame assembly, a front handlebar strut assembly, two rear handlebar strut assemblies, a lock device assembly, a handlebar assembly, a lock hook, a lock column, a mesh bag and rear wheels;
• the lock device assembly is disposed on a top portion of the rear wheel frame assembly;
• the front handlebar strut assembly has a lower end rotatably connected to the rear wheel frame assembly, and an upper end rotatably connected to a front end of the handlebar assembly;
• the two rear handlebar strut assemblies are left-right symmetrically arranged on two sides of the rear wheel frame assembly, and each of the rear handlebar strut assemblies has one end rotatably connected to a middle portion of the rear wheel frame assembly and the other end rotatably connected to a rear end of the handlebar assembly;
• the lock hook is disposed at a connection point of the right rear handlebar strut assembly and the handlebar assembly;
• the mesh bag has four corners fixed on an inner side of the handlebar assembly;
• the rear wheels are left-right symmetrically arranged on a bottom portion of the rear wheel frame assembly;
• and the lock column is disposed on a right lower end of the rear wheel frame assembly, and
• wherein the lock device assembly comprises an unlock rod assembly and two lock assemblies symmetrically arranged on two ends of the unlock rod assembly;
• the unlock rod assembly comprises an unlock rod, blind rivet nuts, and an unlock rod rubber cover;
• the blind rivet nuts are left-right symmetrically arranged on two ends of the unlock rod, and the unlock rod rubber cover is disposed on a middle portion of the unlock rod;
• the lock assembly comprises a lock seat, a locking member, a lock slide block, a lock seat top cover, a lock seat rear cover, a locking member spring and a slide block spring.