| 摘要 |
A door fixture ( 110, 120 ) to be fastened to a frame of an isolator ( 200 ), comprising a door ( 110 ) and a double bayonet closure comprising two bayonet locks ( 121, 311; 122, 211 ) of different chiralities for the purpose of reciprocally transferring the isolator ( 200 ) from a first state, in which the door ( 110 ), which opens from inside the isolator ( 100 ), is open and detached from the isolator frame ( 130 ) and a container flange ( 310 ) surrounding a container ( 300 ) is sealingly locked to the isolator frame ( 220 ), and a second state, in which the door ( 110 ) is shut and sealingly locked to the isolator frame ( 220 ) and the container flange ( 310 ) is detached from the isolator frame ( 220 ), there being provided a first safety device ( 140 ), which allows the door ( 110 ) to be opened only when a container flange ( 310 ) of a container ( 300 ) is sealingly locked to the isolator frame ( 220 ), and a second safety device ( 150 ), which allows for the removal of the container flange ( 310 ) from the isolator frame ( 220 ) only when the door ( 110 ) is sealingly locked to the isolator frame ( 220 ), the provision of a locking ring ( 143 ) that is rotatably mounted in the frame ( 410 ) and can be releasably locked in position, in one end position of which the first safety device is activated and the second safety device is deactivated, and in other end position of which the first safety device is deactivated and the second safety device is activated, ensures that the door will not open from inside the isolator when a flange of a container is not in place on the isolator frame and a bayonet of the flange thus does not engage a corresponding bayonet thread, and creates an additional safety device that prevents the bayonet of the flange of the container, which is attached to the isolator frame when the door is open, from moving into a position in which the flange is removable from the isolator frame.
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