| 摘要 |
<p>In order to avoid use of a flat and deformable key, a locking device for controlling two independent actions is of the axial pin tumbler type. A rotary plug (4), a control plug (5), a master plug (6) and a stationary plug (2) fit in contact with each other within a cylinder (1). Connections and disconnections between the plugs (2, 4 ,5, 6) are effected by the actions of top pins (11), master pins (12) and bottom pins (13), all of which fit into axial pin holes (7, 8, 9, 10) formed in those plugs (2, 4, 5, 6) and are springbiased forward. The selection of the connections and disconnections of the plugs (2, 4, 5, 6) is effected by means of a first key (15), a second key (16), and a master key (17). The rotational directions and angles of an actuating shaft (3) set by the first and second keys (15 and 16, respectively) are controlled by the actions of front and rear face projections (18 and 19, respectively) on the control plug (5), a rear face recess (20) of the rotary plug (4), and a front face recess (21) of the master plug (6).</p> |
