| 摘要 |
A LOCK INCLUDES A BOX (10) WITH A FRONT PLATE AND A SIDE PLATE PROJECTING FROM THE FRONT PLATE, A HOLE (11) DEFINED THROUGH THE SIDE PLATE AND A PIN (12) PROJECTING FROM A CENTER OF THE FRONT PLATE. A LATCH (20) IS INSERTABLE THROUGH THE HOLE (11). A LATCH-CARRYING STRIP (22) IS RECEIVED IN THE BOX (10) AND JOINED WITH THE LATCH (20). A TENSION SPRING (13) IS CONNECTED BETWEEN THE FRONT PLATE AND THE LATCH-CARRYING STRIP (22), BIASING THE LATCH (20) FROM THE BOX (10). A HANDLE-ENGAGING STRIP (40) IS RECEIVED IN THE BOX (10) AND INCLUDES FIRST AND SECOND TABS (42, 44) PROJECTING THEREFROM. A FIRST TORQUE SPRING (72) IS CONNECTED BETWEEN THE FRONT PLATE AND THE SECOND TAB (44). A TUMBLER-ENGAGING STRIP (30) IS RECEIVED IN THE BOX (10) AND INCLUDES A LEFT BRANCH, A RIGHT UPPER BRANCH AND A RIGHT LOWER BRANCH. THE LEFT BRANCH IS PIVOTABLY CONNECTED WITH THE LATCH-CARRYING STRIP (22). A SECOND TORQUE SPRING (74) IS CONNECTED BETWEEN THE LATCH-CARRYING STRIP (22) AND THE TUMBLER-ENGAGING STRIP (30). THE RIGHT UPPER BRANCH IS FORMED AS A HOOK FOR ENGAGEMENT WITH THE FIRST TAB OF THE HANDLE-ENGAGING STRIP (40). THE RIGHT LOWER BRANCH INCLUDES A POINTED PROTRUSION (36), AN INCLINED EDGE (37), A RECESS (38) AND A PROTRUSION (39). A CONCAVE EDGE (34) IS FORMED BETWEEN THE LEFT AND RIGHT LOWER BRANCHES. THE POINTED PROTRUSION (36) DOES NOT STAY ON THE PIN DURING OPERATION OF THE LOCK. (FIG. 1)
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