Patent ID: 7441693

Claim:
A handle structure for cartons, comprising: a handle body, formed as a longitudinal strip structure; and two fastening pairs, connecting to two respective ends of said handle body, each said fastening pair further including: an inside L frame, formed as an L-shape two-arm structure, including an inside fastening strip connected to said handle body, and an inside unfolding strip, where said inside fastening strip is equipped with at least one inside fastening part, where a junction of said inside fastening strip and said inside unfolding strip is defined as an inside edge of frame corner; an outside L frame, formed as another L-shape two-arm structure shaped symmetrically with said inside L frame, including an outside fastening strip and an outside unfolding strip, where at least one outside fastening part is equipped on said outside fastening strip, where a junction of said outside fastening strip and said outside unfolding strip is defined as an outside edge of frame corner; and a flexible ligament, connecting said inside edge of frame corner and said outside edge of frame corner so that said outside L frame is swingable relative to said inside edge of frame corner through a use of said flexible ligament, where positions of said inside L frame and said outside L frame are shifted through said flexible ligament so as to fixedly join said inside fastening part and said corresponding outside fastening part and said outside fastening strip and said inside fastening strip fit closely and join; said inside unfolded strip and said outside unfolded strip being extended as two parallel wings spanning at both sides of said flexible ligament.