A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Disclosed is a heaven and earth lock. The heaven and earth lock comprises a linkage rod, a dead bolt, a latch bolt, a latch bolt reset spring, an upper connecting rod, a lower connecting rod, a shifting sleeve, a first shifting fork and a second shifting fork, wherein the first shifting fork and the second shifting fork are arranged outside the shifting sleeve. The lower end of the linkage rod is connected with the lower connecting rod, and the upper end of the linkage rod drives the upper connecting rod through a gear transmission piece and a gear meshed with the gear transmission piece. The middle of the linkage rod is provided with a dead bolt push-pull pin capable of falling in a push-pull chute of the dead bolt. The first shifting fork acts on a latch bolt rod of the latch bolt. A push-pull portion capable of pushing and pulling the linkage rod to slide up and down is arranged on the second shifting fork. In this way, when a handle is pressed downwards, the latch bolt, the dead bolt and heaven and earth pins connected with the upper and lower connecting rods can be completely retracted into a lock body so that a door can be opened for escape. Accordingly, the heaven and earth lock is more reasonable in structure and has the escape function.
Disclosed is a heaven and earth lock. The heaven and earth lock comprises a linkage rod, a dead bolt, a latch bolt, a latch bolt reset spring, an upper connecting rod, a lower connecting rod, a shifting sleeve, a first shifting fork and a second shifting fork, wherein the first shifting fork and the second shifting fork are arranged outside the shifting sleeve. The lower end of the linkage rod is connected with the lower connecting rod, and the upper end of the linkage rod drives the upper connecting rod through a gear transmission piece and a gear meshed with the gear transmission piece. The middle of the linkage rod is provided with a dead bolt push-pull pin capable of falling in a push-pull chute of the dead bolt. The first shifting fork acts on a latch bolt rod of the latch bolt. A push-pull portion capable of pushing and pulling the linkage rod to slide up and down is arranged on the second shifting fork. In this way, when a handle is pressed downwards, the latch bolt, the dead bolt and heaven and earth pins connected with the upper and lower connecting rods can be completely retracted into a lock body so that a door can be opened for escape. Accordingly, the heaven and earth lock is more reasonable in structure and has the escape function.