Patent ID: 7144050

Claim:
A fire-blocking door lock structure, comprising: a bolt member connected with one end of an actuation mechanism inside the door lock structure, the bolt member comprising a pivot joint member, an operating piece penetrating the pivot joint member, a retaining piece disposed between the pivot joint member and the operating piece, and a driving piece pivotally connected with the pivot joint member and sleeved by a spring for generating a force in several phases; and two latch members connected with the other end, relatively away from the bolt member, of the actuation mechanism by two pull rods respectively, and symmetrically positioned on both sides of the actuation mechanism inside the door lock structure, the latch members each comprising: a latching frame; a latching support movably installed in the latching frame; a latching body rotatably installed in the latching support and pivotally connected to the latching frame; a stop piece movably installed in the latching frame and the latching support, for placing the latching body in an extension position where at least one part of the latching body extends out of the latching support, wherein when the stop piece is moved by a force, it allows the latching body to sit in a retraction position where the latching body retracts inside the latching support; and a driving piece having one end pivotally connected to the stop piece and the other end connected to the pull rods, for receiving a force from the pull rods to move the stop piece and drive the latching body to move between the extension position and the retraction position so as to lock and unlock the door lock structure.