Folding baby buggy frame assembly

Claim 1

A folding baby buggy frame assembly comprising: two symmetrical handlebars, said handlebars each comprised of a hooked handhold and an extension rod extensibly connected to said hooked handhold by a lock switch, said hooked handholds respectively comprising a hole for fastening a folding canopy frame and a projecting rod to support said folding canopy frame; said extension rods respectively comprising a connecting tab for connecting a back frame, an inner projection for connecting a seat frame, a rear wheel frame holder for holding a rear frame by an adjusting screw, and a bottom connected to a handlebar holder of a front wheel frame; one of said extension rods having a locating block at an outer side thereof; two seat frames respectively connected to said inner projection of each extension rod to hold a seat, said seat frames each comprising an outer projection and an adjustment sheet, said adjustment sheet comprising an elongated slot connected to said rear wheel holder of either extension rod by said adjusting screw; two front wheel frames respectively connected to said handlebars and supported on two front wheel assemblies; said front wheel frames each comprising said handlebar holder at a top thereof to hold either extension rod, an L-shaped connecting plate to hold a bottom frame, a front wheel holder connected to a bottom end thereof by a link to hold a front wheel assembly by a front wheel axle; said two front wheel frames including one having a positioning plate retained in place by said locating block of said one extension rod after said folding baby buggy frame assembly has been folded up; two curved back frames pivoted together at respective centers thereof and respectively connected to said handlebars, said curved back frames each having one end pivoted to said connecting tab of said extension rod of either handlebar and an opposite end formed into a L-shaped connecting plate connected to each other by a folding connection, said L-shaped connecting plate of each back frame having an opposite end connected to a rear wheel frame; two rear wheel frames respectively connected to said handlebars and respectively supported on two rear wheel assemblies; said rear wheel frames each having a top end connected to said rear wheel holder of said extension rod of either handlebar by said adjusting screw, and a bottom end connected to a rear wheel holder to hold a rear wheel assembly by a rear wheel axle; said rear wheel frames each comprising an L-shaped connecting plate to hold a bottom frame and a rear brake controlled to stop said rear wheel assembly; two bottom frames pivoted together at respective centers thereof and respectively connected between said front wheel frames and said rear wheel frames, said bottom frames each having one end pivoted to said L-shaped connecting plate of either rear wheel frame and an opposite end formed into a L-shaped connecting plate pivoted to said L-shaped connecting plate of either front wheel frame; and a foot plate made of a resilient material having two opposite ends respectively connected to said L-shaped connecting plate of either bottom frame; wherein said hooked handhold of each handlebar is made of a plastic material with said projecting rod thereof directly molded thereon; said extension rod of each handlebar is made from a plastic material with said inner projection and said rear wheel frame holder thereof directly molded thereon, said one of said extension rods having said locating block molded thereon; each seat frame is made from a plastic material with said outer projection and said adjustment sheet thereof directly molded thereon; each rear wheel frame is made from a plastic material with said rear wheel holder thereof directly molded thereon; each front wheel frame is made from a plastic material with said link and said front wheel holder directly molded thereon.