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A door configuration, which improves the operating and locking mechanism and facilitates construction and handling, comprising a door having a sliding door disposed on a casement such that it can be slidably displaced and the casement can he pivoted about an axis relative to a main frame. A lock is

A door configuration, which improves the operating and locking mechanism and facilitates construction and handling, comprising a door having a sliding door disposed on a casement such that it can be slidably displaced and the casement can he pivoted about an axis relative to a main frame. A lock is provided for locking and unlocking the casement with respect to the main frame, and an operating element is disposed on the sliding door, which can be moved with the sliding door and can be switched between a first position and a second position, wherein, in the first position, the operating element does not obstruct movement of the sliding door on the casement, and, in the second position, the operating element engages with the latch or a carrier, such that, when the casement is closed, the latch is operated when the sliding door is moved.

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1. A door configuration comprising: a main frame;a door member structured, disposed and dimensioned to open and close an access opening defined by said main frame, said door member having a casement cooperating with said main frame and structured to pivot with respect to said main frame about a pivo

1. A door configuration comprising: a main frame;a door member structured, disposed and dimensioned to open and close an access opening defined by said main frame, said door member having a casement cooperating with said main frame and structured to pivot with respect to said main frame about a pivot axis as well as a sliding door disposed on said casement for displacement in a sliding direction;a latch for locking and unlocking said casement in a closed state thereof relative to said main frame; andan operating element disposed on said sliding door for motion together with said sliding door, said operating element having a first position in which said operating element does not obstruct movement of said sliding door on said casement and in which movement of said sliding door does not influence a position of said latch, said operating element also having a second position in which said operating element engages with said latch or with a carrier that is rigidly connected or hinged to said latch, such that, when said casement is closed and said operating element is in said second position, said latch is operated when said sliding door is displaced in said sliding direction, wherein said operating element comprises a pin, said pin being manually pushed inwardly, perpendicular to said pivot axis and perpendicular to said sliding direction, from said first position of said operating element into said second position of said operating element. 2. The door configuration of claim 1, wherein said sliding door covers said access opening when said casement and said sliding door are closed. 3. The door configuration of claim 1, wherein said sliding door extends in a direction perpendicular to said sliding direction over an entire height of said access opening. 4. The door configuration of claim 1, wherein said door member comprises a partial cover for access said opening which is rigidly mounted to said casement, wherein, when said casement and said sliding door are closed, said sliding door extends over a first partial area of said access opening in a direction parallel to said sliding direction and said partial cover extends over a second partial area of said access opening in a direction parallel to said sliding direction, wherein said first plus said second partial areas cover an entire width of said access opening. 5. The door configuration of claim 4, wherein said first and said second partial areas overlap. 6. The door configuration of claim 4, wherein, when said casement is closed and said sliding door is closed, said first partial area extends approximately over half a width of said access opening parallel to said sliding direction. 7. The door configuration of claim 1, wherein, when said sliding door is closed and said casement is closed, said sliding door covers said access opening in a border region thereof that is remote from said pivot axis and said sliding door is slid open from a closed position thereof towards said pivot axis. 8. The door configuration of claim 1, wherein, in said second position of said operating element, said latch locks said casement when said sliding door is closed and releases said casement when said sliding door is opened. 9. The door configuration of claim 1, wherein, in said second position of said operating element, displacement of said sliding door away from a closed position thereof is delimited by a mechanical stop, said mechanical stop thereby restricting displacement of said sliding door along an unlocking path EW which is shorter than a sliding path SW of said sliding door on said casement in said first position of said operating element. 10. The door configuration of claim 9, wherein EW≦0.2*SW or EW≦5 cm. 11. The door configuration of claim 9, wherein said door member has a locking mechanism which blocks displacement of said sliding door away from said mechanical stop when said casement is not closed and when said operating element is located in said second position. 12. The door configuration of claim 11, wherein a movable locking element is provided on said casement which is pretensioned by a force of a spring into a locking position blocking a path of movement of said operating element, said latch or said carrier in said second position, said locking element being pushed out of said path of movement of said operating element, said latch or said carrier in said second position when said casement is closed, through interaction with a counter means that is rigidly formed on said main frame. 13. The door configuration of claim 9, further comprising a mechanism for blocking displacement of said sliding door away from said mechanical stop. 14. The door configuration of claim 13, wherein said blocking mechanism comprises a resilient ball in said casement which engages in a depression in said latch. 15. The door configuration of claim 1, wherein said casement has a guidance which holds said operating element in said second position when said sliding door is moved out of a closed position thereof in said second position of said operating element and which only permits changing over between said first and said second position when said sliding door is closed. 16. The door configuration of claim 15, wherein said guidance has a recessed rail along which said operating element is guided in a notch of said operating element, said recessed rail having a widening through which said operating element is displaced between said first and said second position when said sliding door is closed. 17. The door configuration of claim 1, wherein said pin is retracted and extended and is pretensioned by a force of a spring into a retracted position that corresponds to said first position of said operating element and is manually pushed into an extended position which corresponds to said second position of said operating element. 18. The door configuration of claim 1, wherein said latch is disposed on said casement such that it is displaced parallel to said sliding direction. 19. The door configuration of claim 1, wherein said latch is disposed on said main frame such that it is displaced in a direction parallel to said sliding direction when said casement is closed. 20. The door configuration of claim 1, further comprising a lock disposed on said main frame to block and release a position of movement of said sliding door when said casement and said sliding door are closed. 21. The door configuration of claim 1, wherein said sliding direction extends perpendicularly to said pivot axis. 22. The door configuration of claim 1, wherein said casement. is C-shaped, wherein an open side of said C-shaped casement faces away from said pivot axis. 23. A double door configuration comprising two adjacent door configurations according to claim 1, wherein the two doors of the door configurations constitute two opposite wings of a double door.