Patent ID: 6997634

Claim:
A folding joint arrangement comprising a folding joint for connecting a first frame tube with a second frame tube of a folding frame, wherein said folding joint comprises: an angle joint body having a first end at a first axis and a second end at a second axis, wherein said first axis is perpendicular to said second axis; a pivot arm which is integrally connected to said first end of said angle joint body and extended along said first axis for pivotally connecting with said first frame tube in such a manner that said first frame tube is capable of rotating about said first axis of said pivot arm, wherein said pivot arm has a neck portion and a locker head having at least a locking latch outwardly extended therefrom, wherein said neck portion has a length slightly larger than a size of said first frame tube adapted for positioning said locking latch at an outer side of said first frame tube when said neck portion is rotatably passed through a first through hole of said first frame tube so as to retain said first frame tube within said neck portion of said pivot arm; a connector arm integrally connected to said second end of said angle joint body and extended along said second axis for pivotally connecting with said second frame tube in such a manner that said second frame tube is capable of rotating about said second axis of said connector arm so as to pivotally connect said first frame tube with said second frame tube, wherein said angle joint body has a first and second end portions provided at said first and second ends respectively and extended in a perpendicular manner to integrally connect with said pivot arm and said connector arm respectively, wherein said first end portion has a first biasing surface facing said pivot arm and said second end portion has a second biasing surface facing said connector arm for biasing against said first and second frame tubes when said first and second frame tubes are mounted to said pivot arm and said connector arm respectively so as to retain said first and second frame tubes in position on said pivot arm and said connector arm respectively; and means for securely locking said connector arm on said second frame tube, wherein said locking means has a locking groove indented on an outer circumferential surface of said connector arm at an end thereof and comprises a locking ring detachably mounted on said connector arm along said locking groove in such a manner that said second frame tube is securely mounted on said connector arm at a position between said angle joint body and said locking ring.