Elevator

Abstract

The elevator (1) has a first floor door (10) on a first floor (11), a second floor door (12) on a second floor (13), and a car door (20) on a car (21) that can be moved between the first and the second floor (11, 13). The first floor door (10) has a first floor door lock (22) in order to keep the first floor door (10) closed in the absence of the car (21), and the first floor door lock (22) has an electrically operated floor door lock actuator (23) in order to actuate the floor door lock (22). The car door (20) has a car door lock (24) in order to keep the car door (20) closed while the car (21) is travelling, and the car door lock (24) has an electrically operated car door lock actuator (25) in order to actuate the car door lock (24). The car door (20) has a car door drive (26) in order to move the car door (20) between a closed state and an open state. The car door (20) has an extendable bolt (30), and the first floor door (10) has a first receiving element (31). In an extended position, the bolt (30) interacts with the receiving element (31) in order to transfer the movement of the car door (20) to the movement of the first floor door (10). In a retracted position, the bolt (30) is spaced apart from the receiving element in order to enable the car (21) to be moved between the first and the second floor (11, 13). The first receiving element (31) is arranged next to or above a first floor door leaf (90) of the first floor door (10).

Description

[0001] Elevator

[0002] The present invention relates to an elevator.

[0003] In an elevator system, a cabin typically travels vertically along a track between different floors or levels within a building. To allow entry and exit, as well as loading and unloading, an elevator has doors that can open into the cabin and otherwise remain securely closed. The cabin has a cabin door that moves along the track with the cabin. A landing door is installed on each floor to prevent people from falling into the elevator shaft. When access to the cabin is to be opened, the cabin door and the landing door of the floor where the cabin is currently located open simultaneously.In conventional elevator systems, a complex and bulky mechanical coupling device is usually provided between the floor doors and the cabin door, which first unlocks the floor door via the cabin door drive and then moves the floor door to open and close.

[0004] The cabin door, the landing door, and especially the coupling mechanism take up a considerable amount of space. By reducing the space occupied by the cabin door and the landing door, the passenger compartment within the cabin can be made larger. As shown below, solutions that maximize passenger space are already known.

[0005] Application WO 2022 / 228959, for example, shows an elevator in which the cabin door and the landing door can be positioned very close together. This is achieved by having both the cabin door and the landing door equipped with separate, electrically activated landing door locks, and by having separate electric door drives that are independent of each other. This eliminates the complex mechanical components of the door coupling between the door leaves, which are necessary in conventional door systems for coupling the landing door to the cabin door. Because the door coupling between the cabin door and the landing door is eliminated, the cabin door can be designed closer to the landing door, leaving more space for the passenger compartment in the cabin. However, this solution has the disadvantage that all landing doors require a landing door drive.

[0006] Therefore, one task can be seen as providing an elevator that, on the one hand, maximizes the available passenger space in the cabin and, on the other hand, overcomes the aforementioned disadvantages.

[0007] According to the invention, an elevator solves the problem. The elevator has a first-floor door on the first floor, a second-floor door on the second floor, and a cabin door on a cabin that travels between the first and second floors. The first-floor door has a first-floor door lock to keep it closed when the cabin is unoccupied. The first-floor door lock has an electrically operated door lock actuator to actuate the door lock. The cabin door has a cabin door lock to keep it closed when the cabin is traveling. The cabin door lock has an electrically operated cabin door lock actuator to actuate the cabin door lock. The cabin door has a cabin door drive to move the cabin door from a closed to an open position.The cabin door has a retractable bolt, and the first-floor door has a first receiver. In its extended position, the bolt interacts with the receiver to transfer the movement of the cabin door to the movement of the first-floor door. In its retracted position, the bolt is spaced away from the receiver to allow the cabin to move between the first and second floors. The first receiver is located next to or above a first-floor door leaf.

[0008] Possible features and advantages of embodiments of the invention can be considered, among other things and without limiting the invention, as being based on the ideas and findings described below.

[0009] The cabin of an elevator can have one, two, or more cabin doors. Each cabin door can have multiple door leaves that move telescopically or in opposite directions. The landing doors can have multiple door leaves, preferably mirroring the arrangement of the cabin door leaves. Thus, each cabin door leaf has a corresponding landing door leaf. The cabin preferably travels vertically along the floors. For this purpose, the cabin can be guided by a guide rail. The cabin can travel in a shaft or along the outside of an interior or exterior facade of a building.

[0010] To open the doors on a floor, the system first checks whether safe opening is possible. This means that the floor door of the floor where the cabin has stopped will only unlock if a sensor system has detected that the cabin is actually in front of that floor door. Similarly, the cabin door will only open if the sensor system, and specifically another part of the sensor system, has detected that the floor door to be opened is opposite the cabin door. If the doors can be opened safely, the extendable bolt extends and engages the receiver of the floor door. The floor door is thus linked to the cabin door. The floor door now follows the movements of the cabin door. The floor door lock actuator then unlocks the floor door lock, and the cabin door lock actuator unlocks the cabin door lock.The unlocked cabin door is opened by the cabin door drive. The unlocked landing door follows, due to the coupling via the cabin door's latch.

[0011] This ensures that the cabin door and the landing door move synchronously. The cabin door drive has a motor and a motor control unit.

[0012] By extending the bolt and interacting with the receiver of the floor door, a connection is created between the cabin door and the floor door, ensuring that the doors move together.

[0013] The bolt extends in one direction, from the cabin door to the landing door. Preferably, the extension direction is perpendicular to the plane in which the cabin door extends. The extension of the bolt is preferably directly responsible for its interaction with the sensor. For example, the bolt can exert a frictional force on the sensor. This frictional force can be increased, for example, by a friction-enhancing coating, which is attached, in particular, to the sensor or the bolt. Furthermore, for example, a magnet, which is attached, in particular, to the bolt or the latch, can increase the normal force at the contact point between the bolt and the sensor.

[0014] The receiver can, in particular, have a friction surface to transfer the movement of the cabin door to the movement of the first-floor door. For this purpose, the bolt can be pressed against the friction surface. The friction surface can be located on the surface of the first-floor door or recessed. The friction surface prevents play between the cabin door and the first-floor door. The frictional force couples the cabin door and the first-floor door without play as soon as the frictional force is sufficient to prevent slippage. The contact pressure on the friction surface, and thus the reliability of the movement transmission, can be increased by using a magnet. This magnet can be an electromagnet or a permanent magnet. The magnet is preferably integrated into the bolt.

[0015] The cabin door lock actuator and the floor door lock actuator each have an electrically operated drive that actuates the respective cabin door lock or floor door lock. This drive can be a rotary motor, a linear motor, or a moving coil. Actuating the cabin door lock or floor door lock includes at least unlocking. Locking can be achieved directly by the actuator, either by the cabin door lock actuator or floor door lock actuator using its electrical drive, or by a return spring in the cabin door lock actuator or floor door lock actuator. Similarly, a return spring or a return weight, independent of the cabin door lock actuator or floor door lock actuator, can also cause the respective door to lock.

[0016] The first receiver can therefore only be positioned next to the first-floor door leaf, i.e., at the same height as the first-floor door leaf, only above the first-floor door leaf, or both above and next to the first-floor door leaf. This ensures that the first-floor door leaf, or generally all door leaves with a receiver, is not weakened by the receiver's installation. Furthermore, it is advantageous that the receiver can be easily installed to the side or above the door or door leaf. The first-floor door leaf is preferably flat. It is preferably essentially cuboid, i.e., preferably rectangular, with a thickness of approximately 2 to 5 cm. The height of the first door leaf essentially corresponds to the height of the door. Attachments to the door leaf can serve for support at the door head or for guidance in the door threshold.

[0017] According to a preferred embodiment, the first receiver is designed as a recess in the door between floors. The receiver, shaped as a recess, preferably has a depression so that the bolt can engage in this depression. The depression can be designed as an opening in a surface of one of the door leaves or the door itself. The bolt can transmit the movement only at an outer edge of the depression, for example, to a cover plate, or via a wall of the depression. A friction surface can also be provided on the bottom of the depression.

[0018] The extended bolt preferably engages with the receiver in a form-fit manner. This form-fit interaction can be described as engagement. Such engagement can be achieved by having a positive form on the bolt and a corresponding negative form, i.e., a recess, on the receiver, so that the two fit together. The two forms preferably have sufficient clearance (for example, less than 1 mm). Sufficient clearance prevents significant relative movement between the bolt and the receiver. Since the positions of the cabin door and the floor door can differ only slightly, the achievable relative speed of the cabin door is also limited within the range of the accelerations that typically occur. The momentum transmitted during an impact is thus limited. And no noise is generated during the movement or when holding the floor door.This can be further improved by incorporating dampers into the receiver and / or the bolt. This allows any impact between the bolt and the damper to be absorbed. The damper can act between the bolt and the receiver, between the bolt and / or the cabin door, or between the receiver and the floor door.

[0019] Furthermore, a conical or wedge-shaped design allows the positive form to fit into the negative form without play. This prevents impacts and noise when opening and closing the doors. A conical or wedge-shaped design also allows the bolt to interact with the receiver in a virtually play-free manner, because as the bolt engages the receiver (designed as a recess), it becomes increasingly wider, thus reducing and eventually eliminating any play. Preferably, the bolt is designed such that the wedge-shaped bolt, when engaged, reduces play along a horizontal direction to ensure smooth operation of the floor door. It also maintains sufficient play in a vertical direction to accommodate compensating movements of the cabin during loading and unloading.According to a preferred embodiment, the cabin door lock actuator is arranged such that it can directly move a cabin door lock bolt of the cabin door lock to operate the cabin door lock. Alternatively or cumulatively, the floor door lock actuator is arranged such that it can directly actuate a floor door lock bolt of the first floor door lock to operate the first floor door lock.

[0020] Direct movement can be achieved by having the respective actuator directly drive the respective door lock bolt. Thus, a linear motor can act directly on the door lock bolt in a linear fashion, or a rotary motor can act directly on a door lock bolt mounted on a lever. Preferably, the door lock bolt is linearly displaceable and is connected to the actuator without a joint. The door lock bolt can also be designed as part of the actuator.

[0021] The cabin door lock actuator and / or the floor door lock actuator can be designed to lock or unlock multiple cabin or floor door leaves simultaneously. The door leaves preferably have latches with which the door lock bolt interacts, thereby locking the door leaves and thus the doors. The latches can be designed as holes in a surface or as protruding lugs on a portion of the door leaves.

[0022] A door bolt can lock multiple door leaves simultaneously. This can be achieved by a single bolt engaging multiple latches on several door leaves, which are then held, for example, by different cross-sections of the bolt. Alternatively, the bolt may have multiple lower bolts that engage with the individual latches of the door leaves.

[0023] According to a preferred embodiment, the floor door lock actuator and / or the cabin door lock actuator is designed to be electrically driven and each has an electrical connection for this purpose.

[0024] An electrically driven floor door lock actuator and / or cabin door lock actuator offers the advantage of being easily controlled by the electronic control units already present in an elevator system. The electrical connection serves to link it to the control unit. Preferably, the floor door lock actuator and / or cabin door lock actuator is provided by a cable. This cable preferably has a connector to allow for quick connection and easy replacement of the floor door lock actuator and / or cabin door lock actuator.

[0025] According to a preferred embodiment, the second-floor door has a second-floor door lock to keep the second-floor door closed when the cabin is unoccupied, and the second-floor door lock is actuated by an electrically operated second-floor door lock actuator. The second-floor door has a second receiver, wherein the extended bolt interacts with the second receiver to transmit the movement of the cabin door to the second-floor door.

[0026] The second-floor door has a second latch, identical in design to the first. The second-floor door also has a second-floor door lock, identical in design to the first-floor door lock.

[0027] Preferably, additional floor doors, such as a third, fourth or fifth floor door, also have another floor door lock and another receiver.

[0028] The extended bolt preferably engages appropriately with the second receiver. Preferably, the floor doors on each level are operated by an electrically controlled floor door lock actuator and equipped with a receiver. Thus, the cabin door on each level can be opened as described above.

[0029] According to a preferred embodiment, the receiver is designed as a vertically oriented recess and, in particular, as a vertically extending elongated hole.

[0030] Designing the receiver as a vertically oriented recess allows for greater vertical clearance between the cabin door and the first-floor door than the horizontal clearance between them. The horizontal clearance should be kept as small as possible to couple the movement of the first-floor door to the movement of the cabin door. Conversely, the vertical clearance should be as large as possible so that any vertical movement of the cabin while the door is open results in only minimal vertical forces on the latch and the receiver. Such movements can occur, for example, during loading or unloading of the cabin due to the stretching of a cabin support structure.

[0031] According to a preferred embodiment, the first floor door lock and / or the cabin door lock is designed in such a way that, in the event of a power failure, it keeps the first floor door or the cabin door, which has the first floor door lock or the cabin door lock, closed.

[0032] This means that the lock, i.e., the floor door lock and / or the cabin door lock, has a spring mechanism or a weight element that stores potential energy to return the respective door lock to a locked position after it has been unlocked. The potential energy can be stored inside or outside the cabin door lock actuator or the floor door lock actuator.

[0033] According to a preferred embodiment, the elevator has an electrical energy storage device to enable the locking bar to be extended using the stored energy even in the event of a power failure. The storage device can be located directly at the door, or it can, for example, supply the entire elevator with emergency power. The electrical energy from the storage device can also unlock the landing door lock via the landing door lock actuator, and / or unlock the cabin door lock via the cabin door lock actuator, and / or operate the cabin door drive. Similarly, a door control device can be powered by the electrical energy from the storage device.

[0034] According to a preferred embodiment, in the case of a cabin located on the first floor or another floor, the cabin door and the floor door form a gap when the bolt is retracted.

[0035] The gap is kept clear and serves as clearance, i.e., the minimum distance between the fixed components of the building, such as the thresholds of the floor doors, and the movable components of the cabin, such as the cabin door threshold. This clearance ensures that no part of the cabin collides with a fixed part. In particular, the extendable bolt, when retracted, is completely outside the gap between the floor door and the cabin door. The receiver is also located outside this gap.

[0036] This allows the gap to be reduced to such an extent that the distance between the floor door and the cabin door, and in particular the distance between the respective cabin door leaves and the corresponding floor door leaves, is only determined by a minimal clearance. This minimal clearance is typically specified by standards.

[0037] In particular, the gap is preferably formed between a substantially flat surface of the cabin door facing the floor and a preferably substantially flat surface of the floor door facing the cabin.

[0038] With the locking bar extended, the bar is preferably the only component of the elevator in this space. Besides the bar, people or goods may also be present in the space when they pass through the door. The space preferably extends along the entire length of the elevator. The space can be essentially cuboid in shape, with the height of the cuboid corresponding to the shaft height of the elevator, the width of the cuboid corresponding to the door width, and the depth of the cuboid corresponding to the clearance.

[0039] According to a preferred embodiment, the cabin door has a first cabin door leaf, a second cabin door leaf and a first drive element, wherein the first drive element synchronizes the movement of the first cabin door leaf with the movement of the second cabin door leaf.

[0040] This has the advantage that it is sufficient for the cabin door lock to lock only the first cabin door leaf or the second cabin door leaf. The other cabin door leaf is prevented from moving by the first drive mechanism when the lock is engaged.

[0041] According to a preferred embodiment, the first floor door has a first floor door leaf, a second floor door leaf and a second drive element, wherein the second drive element synchronizes the movement of the first floor door leaf with the movement of the second floor door leaf.

[0042] This has the advantage that only one, instead of two, extendable bolt needs to be installed on the cabin door. Furthermore, the second drive mechanism on the landing door allows only one of the two landing door leaves to be equipped with a landing door lock.

[0043] This is particularly advantageous in combination with the cabin door, which has a first cabin door leaf and a second cabin door leaf. It is especially advantageous if the first cabin door leaf is the same size as the first floor door leaf and moves synchronously with it, and if the second cabin door leaf is the same size as the second floor door leaf and moves synchronously with it.

[0044] According to a preferred embodiment, the cabin door lock is designed to keep the first cabin door leaf and the second cabin door leaf immediately closed during travel, and / or the first floor door lock is designed to keep the first floor door leaf and the second floor door leaf immediately closed during travel.

[0045] Preferably, only a single cabin door lock (or floor door lock) is arranged on the cabin door (or on the landing door), which can hold all cabin door leaves (or landing door leaves) locked. This door lock can lock the first and second corresponding door leaves simultaneously. This takes into account the possibility that the first or the second drive mechanism could fail. Since both door leaves are locked simultaneously, it is ensured that when the door is locked, both door leaves are also securely locked.

[0046] According to a preferred embodiment, the bolt is directly connected to an anchor rod of a first lifting magnet in order to move the bolt from the retracted to the extended position.

[0047] The bolt can, for example, be screwed onto a threaded section of the anchor rod. The direct transmission of movement without moving joints allows for a durable design. The bolt is preferably supported exclusively by bearings along with the anchor rod.

[0048] According to a preferred embodiment, the first lifting magnet, the floor door lock actuator, and the cabin door lock actuator are each identically designed.

[0049] This is advantageous because it allows the same solenoid to be used as a spare part for the first solenoid, the floor door lock actuator, and the cabin door lock actuator. This simplifies warehousing and logistics. For use with a bolt, the bolt is attached to the armature via a mechanical device such as a lever or, preferably, directly to the armature. Similarly, in the door lock actuators, a lever, a push rod, or a Bowden cable can be attached to the solenoid, and preferably to the armature rod of the solenoid.

[0050] Further advantages, features and details of the invention will become apparent from the following description of exemplary embodiments and from the drawings, in which identical or functionally equivalent elements are provided with identical reference numerals.

[0051] This shows:

[0052] Fig. 1 shows an elevator,

[0053] Fig. 2 shows a cabin door and a floor door,

[0054] Fig. 3 shows a schematic representation of the cabin door drive,

[0055] Fig. 4 shows a schematic representation of the floor door synchronization,

[0056] Fig. 5 shows a cabin door and a floor door.

[0057] Fig. 6 shows a lifting magnet, and

[0058] Fig. 7 shows an alternative embodiment of the first receiver.

[0059] Fig. 1 shows an elevator 1. The elevator 1 has a cabin 21 that can travel vertically along floor doors 10 and 12. A first floor door 10 is located on a first floor 11. A second floor door 12 is located on a second floor 13. The numbering of floors 11 and 13 serves only for identification purposes. The first floor 11 can be located on any floor of the building and is independent of the floor numbering. The floors can, for example, be numbered consecutively from several basement levels, through a ground floor, to several upper floors. The second floor 13 can likewise designate any floor; in particular, the second floor 13 can be located above or below the first floor 11.

[0060] To transfer the movement of a cabin door 20 to the movement of the first-floor door 10, a bolt 30 arranged on the cabin 21 can be extended by a first lifting magnet 101. This allows the bolt 30 to interact with a receiver 31 of the first-floor door 10. If the cabin has reached the second floor 13, the bolt can interact in the same way with the second receiver 61 of the second-floor door 12. The two receivers are essentially identical in design.

[0061] The first-floor door 10 is held closed by the first-floor door lock 22. This means that the first-floor door 10 can only be opened if the first-floor door lock 22 is unlocked. For this purpose, the first-floor door lock 22 is preferably operated electrically.

[0062] To enable safe passage of the cabin 21 along the landing doors 10 and 12, a gap 35 is formed between the cabin door 21 and the first landing door 10. This gap is free of elevator components as long as the locking bar 30 is retracted. If the locking bar 30 is extended, it passes through the gap 35. The gap 35 serves as a safety clearance or passage clearance between the cabin 20, in particular the cabin door 21, and the first landing door 10, the second landing door 12, and each subsequent landing door of the elevator.

[0063] The second floor door 12 and each subsequent floor door has a second receiver 61 or a further receiver that is designed in the same way as the first receiver 31. The second floor door 12 and each further floor door has a second floor door lock 60 or a further floor door lock that is designed in the same way as the first floor door lock 22.

[0064] Fig. 2 shows an assembly of a cabin door 20 and a landing door 10, as they are positioned opposite each other in an elevator, such as the one shown in Fig. 1, when stopped on the first floor. The cabin door has a first cabin door leaf 80 and a second cabin door leaf (concealed by the landing door), and the landing door 10 has a first landing door leaf 90 and a second landing door leaf 91. The first cabin door leaf 80 and the first landing door leaf 90 are synchronized. That is, these two door leaves open simultaneously. This is made possible by the first lifting magnet 101 extending the bolt 30. This causes it to retract into the receptacle 31. In its retracted position, the bolt 30 is located laterally next to the first cabin door leaf 80 within the housing of the lifting magnet 101. The lifting magnet 101 or a housing of the lifting magnet 101 is therefore attached to the first cabin door leaf 80.The mounting 31 is positioned and attached to the side of the first floor door 90. The floor door lock 22 unlocks the floor door 10, and the cabin door lock (not visible) unlocks the cabin door 20.

[0065] Figures 3 and 4 show schematically how the door leaves of the doors are coupled.

[0066] Fig. 3 shows the cabin door 20. The first cabin door leaf 80 and the second cabin door leaf 81 are coupled to each other via a first drive element 82 so that they open and close together. For this purpose, the first drive element 82 is guided over two rollers 27. The drive is provided by the cabin door drive 26, which is formed on one of the two rollers 27.

[0067] Fig. 4 shows the door 10. The first door leaf 90 and the second door leaf 91 are coupled to each other via the second drive mechanism 92 so that they open and close together. For this purpose, the second drive mechanism 92 is guided over two rollers 27. The drive is effected via the first door leaf 90, which is driven by the bolt on its receiver (not shown here). The movement of the first door leaf 90 is transmitted to the second door leaf 91 via the second drive mechanism 92.

[0068] Fig. 5 shows a schematic exploded view of the cabin door 20 and the floor door 10. The floor door 10 has a first floor door leaf 90 and a second floor door leaf 91. Both floor door leaves 90 and 91 can be locked by the same first floor door lock 22. For this purpose, the floor door leaves 90 and 91 can each be designed such that they each have a locking element 43 by means of which both the first floor door leaf 90 and the second floor door leaf 91 can be locked by the floor door lock bolt 41. Alternatively, each floor door leaf could have a separate floor door lock. The floor door lock 22 has a floor door lock actuator 23, which is designed as a third lifting magnet 103. Preferably, the floor door lock actuator 23 is designed so that it locks the floor door 10 without power being supplied.The floor door lock bolt 41 assumes the locking position by its own weight or with the assistance of a spring force without energization. The floor door lock actuator 23 moves a floor door lock bolt 41 so that the floor door 10 is locked or unlocked.

[0069] The cabin door 20 has a first cabin door leaf 80 and a second cabin door leaf 81. Both cabin door leaves 80 and 81 can be locked by the same first cabin door lock 24. For this purpose, the cabin door leaves 80 and 81 can each be designed such that they each have a locking element 43 by means of which both the first cabin door leaf 80 and the second cabin door leaf 81 can be locked by the cabin door lock bolt 40. Alternatively, each cabin door leaf could have a separate cabin door lock. The cabin door lock 24 has a cabin door lock actuator 25, which is designed as a second lifting magnet 102. Preferably, the cabin door lock actuator 25 is also designed such that it locks the cabin door 20 without energizing it. The cabin door lock bolt 40 assumes the locking position by its own weight or supported by a spring force without current.The cabin door lock actuator 25 moves a cabin door lock bolt 40 so that the cabin door 20 is locked or unlocked.

[0070] The first cabin door leaf 80 and the first floor door leaf 90 are linked. Door leaves 80 and 90 move together, opening a section of a doorway that is closed by both leaves. Similarly, the second cabin door leaf 81 and the second floor door leaf 91 are linked.

[0071] In order for the first floor door leaf 90 to move synchronously with the first cabin door leaf 80, the first extendable bolt 30 is arranged on the first cabin door leaf 80, which in the extended state interacts with the first receiver 31.

[0072] The second door leaves 81 and 91 can be coupled to the movement of the first door leaves 80 and 90, as described for Fig. 4, by allowing the bolt 30 to engage in the first receiver 31. The receiver 31 is designed as a vertical elongated slot 34 in a piece of sheet metal attached to the first cabin door leaf 90. The elongated slot 34 is shown open at the top, but this is not strictly necessary.

[0073] The first lifting magnet 101, the second lifting magnet 102, and the third lifting magnet 103 are designed as identical components. The lifting magnets 101, 102, and 103 have an electrical connection via a plug 50 and preferably a cable 51. Alternatively to the illustration in Fig. 5, the plug 50 can be formed directly on the housing of the lifting magnets 101, 102, and 103. In this case, a connecting cable not integrated into the lifting magnet would be used. Fig. 6 shows a possible embodiment of the lifting magnets 101, 102, and 103. The armature rod 100 can have a thread 116 at one end. Various elements can then be attached to this thread 116. For example, a latch 30 can be screwed onto the thread 116. The latch is then held and guided completely by the armature rod 100. On the other hand, a latch 117 can also be connected, which can serve for door locking.

[0074] Fig. 7 shows an alternative embodiment of the first receiver 31 as a recess 32. The recess 32 is designed as a depression. The bolt 30 can engage on the flank of the recess 23. The recess 32 is designed as a vertical elongated slot 34. This allows a horizontal movement of the bolt to be transmitted directly to the first-floor door 10, the second-floor door 12, or any subsequent floor door with minimal play. Vertical movement of the bolt 30 while engaged in the recess is accommodated by the sufficiently large clearance along the elongated slot 34. Such movements occur, for example, when the cabin is unloaded or loaded, and the change in load inside the cabin increases or decreases the load on a supporting center of the cabin.

[0075] Such a recess can be designed on the first floor door leaf 90 and / or on the second floor door leaf 91 and, for example, also on each further floor door leaf.

[0076] Finally, it should be noted that terms such as "comprising," "encompassing," etc., do not exclude other elements or steps, and terms such as "a" or "an" do not exclude a plurality. Furthermore, it should be noted that features or steps described with reference to one of the above embodiments may also be used in combination with other features or steps from other embodiments described above. Reference numerals in the claims are not to be considered as limitations.

Claims

Patent claims 1. Elevator (1) comprising a first-floor door (10) on a first floor (11), a second-floor door (12) on a second floor (13), and a cabin door (20) on a cabin (21) that travels between the first and second floors (11, 13), wherein the first-floor door (10) has a first-floor door lock (22) to keep the first-floor door (10) closed when the cabin (21) is absent, and the first-floor door lock (22) has an electrically operated floor door lock actuator (23) to actuate the floor door lock (22), and the cabin door (20) has a cabin door lock (24) to keep the cabin door (20) closed when the cabin (21) is traveling, and the cabin door lock (24) has an electrically operated cabin door lock actuator (25) to operate the to operate cabin door lock (24), and the cabin door (20) has a cabin door drive (26),to move the cabin door (20) from a closed to an open state, wherein the cabin door (20) has an extendable bolt (30) and the first floor door (10) has a first receiver (31), and the bolt (30) in an extended position interacts with the receiver (31) to transfer the movement of the cabin door (20) to the movement of the first floor door (10), and the bolt (30) in a retracted position is spaced away from the receiver to allow the cabin (21) to move between the first and second floors (11, 13), characterized in that the first receiver (31) is arranged next to or above a first floor door leaf (90) of the first floor door (10).

2. Elevator (1) according to claim 1, characterized in that the cabin door lock actuator (25) is arranged such that the cabin door lock actuator (25) can directly move a cabin door lock bolt (40) of the cabin door lock (24) to actuate the cabin door lock (24), or that the floor door lock actuator (23) is arranged such that the floor door lock actuator (23) can directly move a floor door lock bolt (41) of the first floor door lock (22) to actuate the first floor door lock (22).

3. Elevator (1) according to claim 1 or 2 characterized in that the floor door lock actuator (23) and / or the cabin door lock actuator (25) is designed to be electrically driven and each has an electrical connection for this purpose.

4. Elevator (1) according to one of claims 1 to 3, characterized in that the second floor door (12) has a second floor door lock (60) to keep the second floor door (12) closed when the cabin (21) is absent, and the second floor door lock is actuated via an electrically operated floor door lock actuator (23), and the second floor door has a second receiver (61), wherein the extended bolt interacts with the second receiver (61) to transmit the movement of the cabin door (20) to the second floor door (12).

5. Elevator (1) according to one of claims 1 to 4, characterized in that the first receiver (31) is designed as a recess (32) in the first floor door (10).

6. Elevator (1) according to one of claims 1 to 5, characterized in that the first receiver is designed as a vertically oriented recess (32) and in particular as a vertically extending elongated hole (34).

7. Elevator (1) according to one of claims 1 to 6, characterized in that the first floor door lock (22) and / or the cabin door lock (24) is designed such that in the event of a power failure it keeps the first floor door (12) or the cabin door (20) which has the first floor door lock (22) or the cabin door lock (24) closed.

8. Elevator (1) according to one of claims 1 to 7, characterized in that the elevator (1) has a storage device for electrical energy, 9. Elevator (1) according to one of claims 1 to 8, characterized in that, when the cabin (21) is stopped on the first floor (11) or another floor, the cabin door (20) and the first floor door (10) form a gap (35) when the bolt (30) is retracted, which is free of components of the elevator (1).

10. Elevator (1) according to one of claims 1 to 9, characterized in that the cabin door (20) has a first cabin door leaf (80), a second cabin door leaf (81) and a first drive element (82), wherein the first drive element (82) synchronizes the movement of the first cabin door leaf (80) with the movement of the second cabin door leaf (81).

11. Elevator (1) according to one of claims 1 to 10, characterized in that the first floor door (12) has a first floor door leaf (90), a second floor door leaf (91) and a second drive pull element (92), wherein the second drive pull element (92) synchronizes the movement of the first floor door leaf (90) with the movement of the second floor door leaf (92).

12. Elevator (1) according to claim 10 or 11 characterized in that the cabin door lock (24) is designed to keep the first cabin door leaf (80) and the second cabin door leaf (81) immediately closed during travel, and / or the first floor door lock (22) is designed to keep the first floor door leaf (90) and the second floor door leaf (91) immediately closed during travel.

13. Elevator (1) according to one of claims 1 to 12, characterized in that the bolt (30) is directly connected to an anchor rod (100) of a first lifting magnet (101) in order to move the bolt (30) from the retracted to the extended position.

14. Elevator (1) according to claim 13, characterized in that the first lifting magnet (101), the floor door lock actuator (23, 102), and the cabin door lock actuator (25, 103) are identical in design.

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