Door actuation apparatus with locking mechanism for elevators

Claim 2

A door actuating apparatus for elevators, wherein an elevator cabin door is positively connected at the region of the floor of a building by a coupling mechanism with an elevator shaft door located at such building floor, said elevator cabin door being movable through the agency of a thrust crank drive located in a dead-center position when the elevator cabin door is closed, said thrust crank drive possessing a crank wheel driven by a motor arranged at the elevator cabin through the agency of speed reduction means, the improvement comprising said coupling mechanism incorporating an entrainment parallelogram forming the entrainment member of said coupling mechanism, means mounting said entrainment parallelogram at the elevator cabin door, an actuation mechanism for actuating said entrainment parallelogram, at least one pin member secured to the elevator shaft door at a location externally of said entrainment parallelogram, said entrainment parallelogram cooperating with said pin member for coupling said elevator shaft door with said elevator cabin door, a blocking lever connected for movement with said entrainment parallelogram, stop means secured to the elevator cabin and cooperating with said blocking lever to prevent opening of the elevator cabin door when said parallelogram has opened past the point of contact with said pin member and permitting opening of said elevator cabin door when said parallelogram has opened to the point of contacting said pin member.

Claim 3

A door actuating apparatus equipped with a locking mechanism for elevators, wherein an elevator cabin door is positively connected at the region of the floor of a building by a coupling mechanism with an elevator shaft door located at such building floor, said elevator cabin door being movable through the agency of a thrust crank drive located in a dead-center position when the elevator cabin door is closed, said thrust crank drive possessing a crank wheel driven by a motor arranged at the elevator cabin through the agency of speed reduction means, the improvement comprising said coupling mechanism incorporating as entrainment parallelogram forming the entrainment member of said coupling mechanism, means mounting said entrainment parallelogram at the elevator cabin door, spring means for loading said entrainment parallelogram, an actuation mechanism for actuating said entrainment parallelogram against the spring force of said spring means, at least one pin member secured to the elevator shaft door, said entrainment parallelogram cooperating with said pin member for coupling said elevator shaft door with said elevator cabin door, a blocking lever connected for movement with said entrainment parallelogram, a stop member secured to the elevator cabin and cooperating with said blocking lever to prevent opening of the elevator cabin door when said blocking lever is located within the effectiVe range of said stop member and permitting opening of said elevator cabin door when said blocking lever is located outside of the effective range of said stop member, said blocking lever being pivoted through a path of movement described by the movement of the elevator cabin door during movement of said entrainment parallelogram from its actuated position until reaching a non-actuated position where said entrainment parallelogram contacts said pin member, said path of movement of said blocking lever being located outside of the effective range of said stop member, to thereby permit opening of the elevator cabin door, said blocking lever being located within the effective range of said stop member when said entrainment parallelogram is deflected through a path of movement extending past said pin member, so that said blocking lever in conjunction with said stop member prevents opening of said elevator cabin door.

Claim 4

A door actuating apparatus equipped with a locking mechanism for elevators, wherein an elevator cabin door is positively connected at the region of the floor of a building by a coupling mechanism with an elevator shaft door located at such building floor, said elevator cabin door being movable through the agency of a thrust crank drive located in a dead-center position when the elevator cabin door is closed, said thrust crank drive possessing a crank wheel driven by a motor arranged at the elevator cabin through the agency of speed reduction means, the improvement comprising said coupling mechanism incorporating as entrainment parallelogram forming the entrainment member of said coupling mechanism, means mounting said entrainment parallelogram at the elevator cabin door, spring means for loading said entrainment parallelogram, an actuation mechanism for actuating said entrainment parallelogram against the spring force of said spring means, at least one pin member secured to the elevator shaft door, said entrainment parallelogram cooperating with said pin member for coupling said elevator shaft door with said elevator cabin door, a blocking lever connected for movement with said entrainment parallelogram, a stop member secured to the elevator cabin and cooperating with said blocking lever to prevent opening of the elevator cabin door when said blocking lever is located within the effectiVe range of said stop member and permitting opening of said elevator cabin door when said blocking lever is located outside of the effective range of said stop member, said blocking lever being pivoted through a path of movement described by the movement of the elevator cabin door during movement of said entrainment parallelogram from its actuated position until reaching a non-actuated position where said entrainment parallelogram contacts said pin member, said path of movement of said blocking lever being located outside of the effective range of said stop member, to thereby permit opening of the elevator cabin door, said blocking lever being located within the effective range of said stop member when said entrainment parallelogram is deflected through a path of movement extending past said pin member, so that said blocking lever in conjunction with said stop member prevents opening of said elevator cabin door.

Claim 5

The door actuated mechanism as defined in claim 2, wherein said entrainment parallelogram comprises two substantially vertically extending coupling rails and two double levers, means mounting said two double levers at said elevator cabin door, said two double levers pivotably interconnecting said coupling rails with one another, said spring means comprising a tension spring for urging said entrainment parallelogram to spread under the action of its spring force, means for connecting said actuation mechanism with the thrust crank drive, said actuation mechanism compressing together said tension spring at the end of the closing operation of said elevator cabin door.

Claim 6

The door actuating mechanism as defined in claim 3, wherein said actuation mechanism comprises a sliding crank drive, means for connecting said sliding crank drive with said crank wheel of said thrust crank drive, said sliding crank drive being located in a position of large displacement when the elevator cabin door is closed.

Claim 7

The door actuating mechanism as defined in claim 3, further including a pair of said pin members secured to each elevator shaft door, said entrainment parallelogram being in a collapsed condition under the influence of said actuation mechanism when said elevator cabin door is closed and engaging with play between said two pin members at the region of the elevator shaft door in such collapsed condition.

Claim 8

The door actuating mechanism as defined in claim 3, further including a pair of said pin members secured to each elevator shaft door, said two substantially vertically extending coupling rails defining slide curves and being provided at each end with bevelled portions facilitating introduction of the entrainment parallelogram between said pin members even when said entrainment parallelogram is in its maximum spread position.

Claim 9

The combination with an elevator cabin movable in an elevator shaft of a building between various floors thereof, said elevator cabin having an elevator cabin door arrangement and said elevator shaft having a shaft door arrangement at each floor of the building, of a door actuating apparatus for the elevator cabin door arrangement and shaft door arrangements, said door actuating apparatus comprising a coupling mechanism for positively connecting the elevator cabin door arrangement with the associated elevator shaft door arrangement of the building floor at which the elevator cabin stops when such elevator cabin is located at the region of such building floor, drive means for operably moving said elevator cabin door arrangement, said coupling mechanism embodying at least one expandable entrainment parallelogram constituting the entrainment member of said coupling mechanism, means for mounting said entrainment parallelogram at the elevator cabin door arrangement, an actuation mechanism for actuating said expandable entrainment parallelogram, at least one member secured to said elevator shaft door arrangement, said entrainment parallelogram cooperating with said at least one member for coupling said elevator shaft door arrangement of the aSsociated floor with said elevator cabin door arrangement, a blocking lever connected for movement with said entrainment parallelogram for blocking movement of at least one of said door arrangements, a stop member cooperating with said blocking lever in a given position thereof for blocking opening of at least said one door arrangement, said entrainment parallelogram being movable between a collapsed position and an essentially fully expanded position, said blocking lever being disposed outside of the effective range of said stop member during such time as said entrainment parallelogram moves between said collapsed position and a partially expanded position, to permit opening both said elevator cabin door arrangement and the associated elevator shaft door arrangement, said blocking lever being located in the effective range of said stop member in a position for abutting against said stop member when said entrainment parallelogram assumes it fully expanded position, whereby said blocking lever in conjunction with said stop member prevents opening of said at least one door arrangement.

Claim 10

The combination with an elevator cabin movable in an elevator shaft of a building between various floors thereof, said elevator cabin having an elevator cabin door arrangement and said elevator shaft having a shaft door arrangement at each floor of the building, of a door actuating apparatus for the elevator cabin door arrangement and shaft door arrangements, said door actuating apparatus comprising a coupling mechanism for positively connecting the elevator cabin door arrangement with the associated elevator shaft door arrangement of the building floor at which the elevator cabin stops when such elevator cabin is located at the region of such building floor, drive means for operably moving said elevator cabin door arrangement, said coupling mechanism embodying at least one expandable entrainment parallelogram constituting the entrainment member of said coupling mechanism, means for mounting said entrainment parallelogram at the elevator cabin door arrangement, an actuation mechanism for actuating said expandable entrainment parallelogram, at least one member secured to said elevator shaft door arrangement, said entrainment parallelogram cooperating with said at least one member for coupling said elevator shaft door arrangement of the aSsociated floor with said elevator cabin door arrangement, a blocking lever connected for movement with said entrainment parallelogram for blocking movement of at least one of said door arrangements, a stop member cooperating with said blocking lever in a given position thereof for blocking opening of at least said one door arrangement, said entrainment parallelogram being movable between a collapsed position and an essentially fully expanded position, said blocking lever being disposed outside of the effective range of said stop member during such time as said entrainment parallelogram moves between said collapsed position and a partially expanded position, to permit opening both said elevator cabin door arrangement and the associated elevator shaft door arrangement, said blocking lever being located in the effective range of said stop member in a position for abutting against said stop member when said entrainment parallelogram assumes it fully expanded position, whereby said blocking lever in conjunction with said stop member prevents opening of said at least one door arrangement.