| 摘要 |
A door lock comprises a housing (1), a dead bolt (4) and at least on a first side of the housing, a first type of connection member (10) connectable to a turnable knob or the like. The first type of connection member (10) is also operatively connected to the dead bolt (4) for manual operation thereof between a protruding locking position (not shown) and a retracted releasing position. At least on the opposite side of the housing (1), there is a second type of connection member (8) connectable to a key-operated lock unit. The second type of connection member (8) is also operatively connected to the dead bolt (4). The operative connection (26,27,17,21) between the first type of connection member (10) and the dead bolt (4) includes means (26) for temporary disconnection of this connection for excluding manual operation of the dead bolt (4) and thereby make the door lock temporarily operable only from a key-operated lock unit coupled to the second type of connection member (8). <IMAGE> |
