Abstract: A blocking structure of an anti-fire door lock includes a latch set, a blocking pin set and a blocking base, wherein the latch set comprises a lock base and a latch that pivotally connected to the lock base. The blocking pin set disposed in an accommodating hole of the latch comprises a blocking pin and an elastic member, and the blocking base comprises a constraining slot. The elastic member is used for pushing the blocking pin to move and making the blocking pin to lodge into the constraining slot to prevent an anti-fire door from being opened.

Abstract: A blocking structure of an anti-fire door lock includes a latch set, a blocking pin set and a blocking base, wherein the latch set comprises a lock base and a latch that pivotally connected to the lock base. The blocking pin set disposed in an accommodating hole of the latch comprises a blocking pin and an elastic member, and the blocking base comprises a constraining slot. The elastic member is used for pushing the blocking pin to move and making the blocking pin to lodge into the constraining slot to prevent an anti-fire door from being opened.

Abstract: An automatic door closer structure comprises a casing, at least one piston, at least one limiting member, at least one driving member connected with the piston and a shaft. The casing has an outside wall, a chamber, an inside wall and at least one first limiting portion. The piston slidably disposed within the chamber of the casing has an outer wall and a second limiting portion formed on the outer wall. The limiting member has a first end portion and a second end portion both are connected with the first limiting portion of the casing and the second limiting portion of the piston respectively to limit rotation of the piston. The shaft comprises a shaft body pivotally disposed in the casing and an eccentric cam contacts against the driving member.