| 摘要 |
<p>A flat lock set has a flat lock having a cylinder, a tumbler, several rings and springs and a key having several stepped blades each having several shoulders. The cylinder is mounted in a door and has four groups of ribs formed therein. Each group includes several separate ribs defining several passages extending perpendicular to a length of the cylinder. The cylinder has a first end defining a first opening and a second end integrating with a ring defining a second opening. The tumbler has a disk integrating with a key receiver integrating with a latch carrier. The key carrier is separated into several prongs. The rings each have two ears formed along an outer rim thereof and several arms formed along an inner rim thereof. When the rings and springs are alternatively mounted on the first sections of the prongs, the arms formed on the rings are sited between the prongs. The tumbler is assembled in the cylinder with the second sections of the prongs thereof protruding through the second opening for carrying a latch. The springs bias the rings toward the disk of the tumbler so that the ears protruding from the rings are trapped between the ribs. The shoulders formed on the blades of the key press the arms so that the ears align with the passages.</p> |
