EP3889092A1 - Door system for an elevator system, elevator system and use of a door system in an elevator system - Google Patents

Abstract

A door system (100, 200, 300, 400) for an elevator system with a shaft and a car (101) is described. The door system comprises a car door (110) for the car (101) of the elevator system and at least one shaft door (120) for separating at least one floor from the shaft of the elevator system, the car door (110) being set up for this purpose, together with a current shaft door (120) to open and close the at least one shaft door (120) in order to open the stationary car (101) to a current floor of the at least one floor, and wherein the height of the car door (110) is less than the height of the current landing door (120), so that when the car door (110) and the current landing door (120) are opened together, there is a height difference between the upper limit of the car door and the upper limit of the current landing door, such that between the upper limit of the current landing door and the upper limit the car door has a differential area (115).

Description

The present invention relates to a door system for an elevator system according to the preamble of claim 1, as well as a corresponding elevator system and the use of the door system in an elevator system.

Elevators, especially passenger elevators, are usually equipped with doors. Often these are sliding doors. Typically there is a car door which is used to separate the elevator car, also referred to here as a car or cabin, from the shaft wall as it moves past. In addition, there are shaft doors on each floor that close the elevator shaft.
For the safety of the passengers, the landing door and car door are only opened in normal operation when the car is in the area of the corresponding floor and it is safe to enter or leave the car. This presupposes a joint actuation of the shaft door and the car door. Up to now, a drive mechanism has usually been used for this purpose, which couples the shaft door and the car door to one another via a driving bar and thus effects the joint opening of the two doors. The aforementioned construction means that all shaft doors and the car door must have approximately the same dimensions, since otherwise the coupling is not possible.

Recently, however, drives for elevator doors have also become available which operate the shaft door and the elevator car door independently of one another, so that the coupling described above is no longer necessary. On the basis of such drives, for example, the patent application CN107804777A elevator system described possible in which shaft doors and car doors can be used in which the car door is the same height or higher than the shaft door.

For architectural reasons, however, it can be desirable for an elevator system to be equipped with shaft doors of different heights, for example when the height of the individual floors in the building is different. Accordingly, there is still a need for a door system which is particularly suitable for implementing an elevator system in a building with different floor heights is. The system described here addresses this problem.

One aspect of the invention relates to a door system for an elevator system with a shaft and an elevator car. The door system comprises a car door for the car of the elevator system, and at least one shaft door for separating at least one floor from the shaft of the elevator system, the car door being set up to open and close together with a current shaft door of the at least one shaft door in order to to open the stationary car to a current floor of the at least one floor and wherein the height of the car door is less than the height of the current shaft door. When the car door and the current shaft door are opened together, there is a difference in height between the upper limit of the car door and the upper limit of the current shaft door, such that there is a difference area between the upper limit of the current shaft door and the upper limit of the car door.

A second aspect of the invention relates to an elevator system with a door system according to an embodiment of the first aspect.

A third aspect of the invention relates to the use of a door system according to an embodiment of the first aspect in an elevator system with at least two floors, with at least one shaft door being present on each of the at least two floors.

Various exemplary embodiments of the door system are described below. The exemplary embodiments are not to be understood as restrictive here. Individual features or embodiments can be combined with one another as required.

In a first exemplary embodiment, the door system comprises a car door and at least one shaft door. The car door is typically attached to the car of an elevator system in order to secure the interior of the car against the shaft wall. The car door can be available alone or in combination with further door systems and in particular further car doors in an elevator system. For example, two car doors can be opposite each other in a car so that the car can be entered from two sides.

The at least one shaft door can be located on one of the floors of the elevator system. The shaft door is typically set up to separate the respective floor from the elevator shaft, so that the risk of an open shaft is avoided. The elevator system can comprise a shaft door according to the invention on each floor; it can also comprise several shaft doors according to the invention on each floor, for example when the elevator car can be accessed from both sides as described above. The elevator system can also be designed in such a way that only a part of the shaft doors, for example only a single one of the shaft doors, is equipped in accordance with the door system according to the invention.

In a further exemplary embodiment, the car door and the at least one shaft door are set up to open and close together. This can be the case, in particular, when the car has reached a floor in the course of normal operation of the elevator system and the passengers should be able to get on or off. Such a shaft door, that is to say the shaft door for which opening or closing is provided, is to be referred to as the current shaft door. The floor on which the current shaft door is located is the current floor. The current shaft door of the door system can change as a function of the operating state of the elevator system, for example when another floor is approached from the car. It is possible that there is no current shaft door, for example when the door system is in a state in which a common opening of the car door and one of the at least one shaft door is not provided or possible, for example when the car is is in motion. There can also be several current shaft doors, for example if there are several shaft doors according to the invention on a floor.

The common opening and closing is typically used to remove the common obstacle created by both doors. The current shaft door is preferably opened and closed at the same time and with the same movement as the car door. However, joint opening and closing does not necessarily mean a synchronous movement; the current shaft door can be opened or closed independently of the opening or closing of the car door. For example, the current shaft door can be opened or closed in relation to the car door with a time delay, slower or faster or in some other way not mentioned here.

The car door and the at least one shaft door are preferably sliding doors. The car door and the at least one shaft door can be centrally opening sliding doors or telescopic sliding doors. A combination of different door shapes is possible. The at least one shaft door can be designed in the form of at least two shaft doors with different designs, which can also be located on different floors.

In a further exemplary embodiment, the height of the car door is less than that of the current shaft door. The height of the car door can also be less than the height of the at least one shaft door, for example when the at least one shaft door is not a current shaft door. The height difference between the upper limit of the current landing door, i.e. the landing door that is already in a position suitable for opening or closing, to the upper limit of the car door can be at least 300 mm, but also at least 200 mm or at least 100 mm. The lower height of the car door in relation to the current shaft door results in a difference area. The difference area is to be understood as the area that is perceived by a passenger when looking at the open cabin from the floor as the area that lies behind the current, open shaft door, minus the area of the at least one open door leaf Releases the car door. The difference area as such only manifests itself when both doors are opened. It is clear to a person skilled in the art, however, that the area which represents the difference area when the doors are open can still be defined without any doubt even when the doors are closed, so that in this state, too, is referred to as the difference area.

This difference area typically arises between the upper limit of the car door and the upper limit of the current shaft door. The difference area is typically rectangular, although other shapes are also conceivable, depending on the shape of the current shaft door and the elevator car door. The difference area is typically an at least essentially vertically oriented area with a height which corresponds to the height difference between the upper limit of the car door and the upper limit of the current shaft door.

In a further exemplary embodiment, the lower limit is the current shaft door flush with the lower limit of the car door (if the car is correctly positioned on the current floor). This is typically the case when, during normal operation of the elevator system, both the car door and the current shaft door extend to the floor and the car has come to a standstill in such a way that the floor and the car floor are flush with one another. In the example mentioned, the flush of the lower boundaries of the current shaft door and the car door is therefore to be understood as a consequence of the state that enables the passenger to get on and off safely. Small differences in height and fluctuations, as they occur in normal operation of an elevator system, are therefore also to be understood as flush in the context mentioned.

Both the at least one shaft door and the car door can be designed without a door lintel. In conventional doors, the lintel usually serves to divert an overlying load to the side, so that the load-bearing capacity of a wall is maintained despite the door opening.

However, if the load-bearing capacity is created in some other way, for example if the wall is a partition wall without a load-bearing function, the structural function of the door lintel is no longer relevant and the door lintel then typically primarily serves to fit the respective door into the wall. In the context mentioned, the components of a door frame located above the door between the door and the ceiling can also be referred to as a door lintel. Floor-to-ceiling doors are therefore usually designed without a lintel.

A door lintel in connection with the door system described is therefore to be understood as a horizontal structure above the respective door, which extends for the at least one shaft door between the upper edge of the shaft door and the floor ceiling and for the car door between the upper edge of the car door and the interior car ceiling. Further components of the door opening system, for example components of the drive, guide rails and the like, can thus continue to lie above the at least one shaft door or the car door and also fulfill the function of a door lintel, as long as the respective door itself extends to the floor ceiling or car ceiling.

In a further exemplary embodiment, the at least one shaft door and the car door of the elevator system can have independent drives. In this context, independent means that the drives for the car door and the at least one shaft door, that is to say for example also the current shaft door, work mechanically independently of one another. In particular, the drive of the two doors can be designed so that the car door and the drive of the car door do not include any devices that are required for unlocking and guiding the current shaft door, for example unlocking hooks, driving or door swords. However, independent is not to be understood as meaning that the at least one shaft door or the elevator car door is opened or closed separately in terms of time or space. The doors can preferably be opened completely synchronously, simultaneously and in a common, uniform movement. A drive can be composed of several drive sub-units, such as several motors, sensors, locking devices or other sub-units not mentioned here, for example when a door consists of several leaves and each leaf is equipped with a drive sub-unit.

To control the drives, the door system can include a controller. The controller can be set up to provide control signals which are used to open and close the car door and the current shaft door in the manner described above. In addition, the controller can be set up to keep the at least one shaft door and the car door closed when the door system is not in a safe state. The controller can be set up to record status information on the doors of the door system, e.g. the current position of the doors, the speed at which the doors are currently opening, the degree of opening of the current landing door or the car door or the presence of faults. Sensors can be used for this. The sensors used can be components of the respective door, the control system or the elevator system.

The control can be a single component, but the control can also be designed together with other components of the door system or the elevator system in a common unit. The control can be software-based, for example in the form of a program, on a controller. The controller can In addition to controlling the doors, they also take on other tasks in the door system or in the elevator system.

In a further exemplary embodiment, the door system comprises a cladding element which covers the differential area. The section of the door system or of the elevator system lying behind the area of the differential area typically includes components of the elevator car door or the car and the open elevator shaft. These are elements of the open shaft. For reasons of safety and increased freedom of design, it can therefore be advantageous if the area mentioned is clad by a cladding element.

The cladding element is therefore preferably designed in such a way that it at least partially delimits the floor from the open shaft. In particular, it can be advantageous if the cladding element completely separates the open shaft from the floor. For this purpose, the cladding element can preferably also fulfill an aesthetic function, for example by enabling the integration of architectural design elements. The cladding element can be, for example, stainless steel sheets, wood-paneled cladding, natural stone cladding or other suitable materials.

The cladding element can be designed in such a way that it does not move in relation to the current shaft door or car door while the elevator system is at a standstill. In particular, the cladding element can assume a fixed position in relation to the door system independently of the opening and closing of the doors. The cladding element is preferably mounted on the car, that is to say the car, or in a further advantageous example on the car door, in particular on non-movable parts of the car door. This embodiment offers the advantage that the smallest possible number of cladding elements is required for a door system which typically comprises a larger number of shaft doors than car doors. In certain cases, however, it can also be advantageous if the cladding element is mounted on other elements of the door system or the elevator system, for example the inside of the shaft wall or the inside of the at least one shaft door.

The cladding element is preferably mounted so that the gap between the cabin and inner shaft wall, i.e. also in particular the gap between the car door and the current shaft door and the gap between the cladding element and the respective opposite door, for example the car door or the current shaft door, is small, so that foreign objects are prevented from entering. Such a gap can preferably be smaller than 50 mm, smaller than 20 mm or smaller than 10 mm.

In a further, favorable embodiment, the cladding element comprises a display element. The display element can encompass the entire surface of the cladding element; it can also form a partial area of the cladding element, so that the cladding element comprises further components. The entire cladding element can be a display element.

The display element can be any form of device suitable for displaying information. The representation of static text or images, for example in the form of a sign, can already be understood as a display. In an advantageous example, however, the display element can also be designed so that variable information can be presented, for example in the form of a display or a screen, as well as in the form of a projection, wherein the cladding element in this context can then be designed in the form of a projection surface.

The information shown or displayed can be passenger information, for example a greeting message, a floor, a planned direction of travel or the facilities of the building that are available on the target floor. It can also be conceivable that the display element displays diagnostic messages in a maintenance mode or is used to display advertising. Numerous other advantageous uses are conceivable.

In a further exemplary embodiment, the at least one shaft door comprises a display element. The display element can encompass the entire area of the at least one shaft door; it can also form a partial area of the at least one shaft door, so that the at least one shaft door comprises further components. The entire at least one shaft door can be a display element. If the landing door has a lintel includes, in particular if a door lintel is above the shaft door, that is between the shaft door and the floor ceiling, the display element can be implemented entirely or partially in the area of the door lintel. The display element can be positioned on the floor side so that the display can be perceived by people on the floor.

The display element can be any form of device suitable for displaying information. The representation of static text or images, for example in the form of a sign, can already be understood as a display. In an advantageous example, however, the display element can also be designed so that variable information can be presented, for example in the form of a display or a screen, as well as in the form of a projection, the at least one shaft door in this context then being in the form of a projection surface can.

The function of the display element is typically independent of whether the at least one shaft door is a current shaft door a shaft door allowed. The display element of the at least one shaft door can consist of a multiplicity of display elements or display sub-elements, for example when the at least one shaft door is two or more shaft doors, for example on several floors. In one example, the at least one shaft door can be designed in the form of a split sliding door, so that in this case the display element can consist of display sub-elements, for example a display sub-element on each of two wings of a centrally opening sliding door, which together form a display element, but when opening or Closing the at least one shaft door are spatially separable.

The information shown or displayed can be the same type of information that can also be displayed by the cladding element in the form of a display element.

In a further exemplary embodiment, both comprise the at least one shaft door as well as the cladding element each have one or more display elements or display sub-elements. The display elements of the cladding element and the display elements of the shaft door are preferably designed in such a way that there is a partial overlap if the at least one shaft door is a current shaft door. Instead of a partial overlap, no overlap, a complete overlap or a direct connection from the display element of the cladding element to the display element of the shaft door can also be advantageous.

In an advantageous embodiment, the display elements of the cladding element and the current shaft door can form a common display element. For example, a display element of a current shaft door can be installed in the door lintel area and, together with the display element of the cladding element, form a common area of display elements that is perceived as a common display element for the floor-side passenger when the car is on the same floor with the doors open.

In another, advantageous embodiment, the current shaft door can display a display on the display element before the current shaft door is opened and the display can be continued on the display element of the cladding element during or after the shaft door is opened.

In a favorable embodiment, the display of the display element of the retracting, opening shaft door is shown spatially displaced on the display element in real time, so that the position of the display does not change in relation to the display element of the cladding element. In a favorable exemplary embodiment, this creates a favorable effect that is perceived by the passenger as a pleasant form of the display. For this purpose, the display element can be set up to receive information about the state of the door system from the control unit, in particular information about the current shaft door, for example the open state of the current shaft door.

In a further exemplary embodiment, the door system is used in an elevator system. The elevator system typically comprises at least one elevator shaft, in which a car is guided along in a predominantly vertical direction, as well as several Floors where the car can stop to allow passengers to get on and off for their transport between floors.

The elevator system can be designed in such a way that the components of the improved door system are combined with components of a further door system. The advantages of the door system according to the invention can already be obtained when a shaft door and a car door are equipped with the features of the invention, although the elevator system comprises several car doors or shaft doors. For example, the door system can be used in the lobby area of a building while other door systems are used in the rest of the building.

The present door system, the elevator system with the improved door system and the use of the door system in an elevator system bring numerous advantages with them. The door system can make it possible to increase the architectural freedom in building planning. In particular, one advantage can be that the height of the individual doors of the elevator system no longer has to be standardized; shaft doors of different heights can be installed as long as their height corresponds to or exceeds the height of the elevator car door. Both the car door and the at least one shaft door can be designed without a lintel. Interesting architectural concepts can be implemented in this way, especially in high rooms. Choosing a lintel-free car door can simplify the transport of bulky goods and often provides passengers with an improved sense of space, so that even small cabins are perceived as spacious.

The new door system can create new areas, e.g. the aforementioned difference area, which have not previously been available as design elements in the form mentioned. One advantage of the surfaces mentioned can be that the cladding elements lying on the surfaces mentioned can be used as display elements.

The cladding elements can form a common display element together with further display elements, for example those that are present in the shaft door of a door system, whereby the quality of the display is improved. The increased flexibility in the selection of possible positions for display elements can make a positive contribution to the design freedom of an architect.

Figur 1:

Darstellung von Ausführungsformen des Türsystems mit verschiedenhohen Türen, teilweise türsturzfrei (Seitenansicht)

Figur 2:

Darstellung von Ausführungsformen des Türsystems mit Anzeigeelementen, teilweise türsturzfrei (Seitenansicht)

Figur 3:

Darstellung einer Ausführungsform des Türsystems mit einem Anzeigeelement (Frontalansicht)

Figur 4:

Darstellung einer Ausführungsform des Türsystems mit einer Kombination von Anzeigeelementen (Frontalansicht)

Numerous further advantages of the invention emerge from the exemplary embodiments described below. The following drawings and the description are not to be interpreted as restrictive in this context.

Figure 1:

Representation of embodiments of the door system with doors of different heights, partially without lintel (side view)

Figure 2:

Representation of embodiments of the door system with display elements, partly without lintel (side view)

Figure 3:

Representation of an embodiment of the door system with a display element (front view)

Figure 4:

Representation of an embodiment of the door system with a combination of display elements (front view)

Only the elements necessary for understanding the invention are shown in each case; it is clear to the person skilled in the art that the door system and the elevator system, which includes the door system described, can contain further elements, all of which are known from the prior art.

In Fig. 1 three possible embodiments of a door system 100 in an elevator system are shown. It is a sectional drawing of the elevator system in a side view, as it is present when the car is on a floor to enable passengers to get on or off.

In all three examples, the cabin floor 102 of the cabin 101 lies flush with the floor 104, so that getting in and out is possible without danger. The doors 110, 120 can thus be opened in the course of normal operation of the elevator system. Since the car door 110 and the shaft door 120, which is always a current shaft door in the examples shown, extend to the respective floor 102, 104, a possible difference in height between the two doors 110, 120 is expressed in a different position in the examples shown the upper limit of doors 110, 120.

When running in Fig. 1a is an example of a door system according to the known state of the art. The example serves to illustrate the technical problem of conventional door systems.

It can be seen that the height of the floor, that is to say the distance between the floor 104 and the floor 105, differs from the height of the cabin 101. However, the car door 110 and the shaft door 120 are designed to be the same height. The case shown can occur, for example, when a building has floors of different heights and the height of the car and the associated car door have been adapted to the lowest floor of the building.

In the example shown, the difference in height between the floor and the car 101 is compensated for in that the shaft door has an enlarged door lintel 121 which extends between the upper limit of the shaft door 120 and the floor ceiling 105. The door lintel 121 shown is shown schematically by an enlarged area above the shaft door, the surface 121 shown can include, for example, the drive of the shaft door and elements of the wall or the door frame. However, the presence of such a lintel can be undesirable.

In Figure 1b a door system according to the invention is shown. It can be seen that the car door 110 and the shaft door 120 have different heights, since the height of the shaft door 120 exceeds the height of the car door 110. In the example shown, the difference in height results from the fact that the shaft door 120 was designed without a lintel, that is, without a lintel 121. Instead, the shaft door extends over the entire height between the storey floor 104 and the storey ceiling 105. In order to enable a lintel-free design, the drive of the shaft door was designed as a landing-door drive 122 without lintel. Said drive 122 is located above the floor ceiling 105 and can, for example, be located in a recess provided for this purpose within the elevator shaft. The embodiment shown can bring architectural and aesthetic advantages.

The car door 110 is a conventional design with a door lintel 111. Due to the different heights of the doors 110, 120, there is a difference area 115 when opening, which is for a passenger who is in the area of the floor is visible. Since the door lintel 111 can contain elements of the drive of the car door 110, the door lintel 111 can, in an advantageous exemplary embodiment, comprise a cladding element on the floor side, so that no access to mechanical components of the drive in the area of the differential area 115 is possible for a passenger.

In Figure 1c Another embodiment is shown in which both the shaft door 120 and the car door 110 are designed with a drive 112, 122 without a lintel-free drive, so that both the car door 110 and the shaft door 120 are each completely between the floor 102, 104 and the ceiling 103 , 105 extend. The embodiment shown can bring architectural and aesthetic advantages.

It should be emphasized that in Figure 1c the height of the shaft door 120 differs from the height of the car door 110, so that a difference area 115 is present. The observations made Figure 1b apply analogously to this.

In Fig. 2 sections of a door system 200 are shown in side view, which in certain aspects is related to the one shown in FIG Fig. 1 described door system can be compared. In particular, the arrangement of a car door 110 in relation to a current shaft door 120 is shown; the door system or the elevator system comprising the door system is in a state in which the doors can be opened without danger.

The illustration shown includes a side view of the upper areas of the doors, the lower limits of the doors being analogous to the example Fig. 1 each extend to the floor of the cabin and the floor and both the cabin floor and the floor are flush with one another.

Fig. 2a represents a known state of the art. Analogous to Fig. 1a The car door 110 and the shaft door 120 are designed to be the same height and each include a door lintel 111, 121 in which, for example, the drives for the doors can be located. In addition to this, the door system has a display element 240 which, in the example shown, is designed as a flat panel that is mounted in the area of the shaft door lintel 121. Information can be made accessible to a passenger located on the floor via the display element 240.

Figure 2b is an example of a door system according to the invention, since the height of the shaft door 120 exceeds the height of the car door 110. In contrast to the examples from Fig. 1 However, both doors comprise a car door lintel 111 or a shaft door lintel 121, which is located between the car door 110 and the car ceiling 103 or between the shaft door 120 and the floor ceiling 105.

Due to the difference in height between the two doors 110, 120, when the shaft door 120 is opened, a difference area 115 is thus created. In the example shown, the difference area is used in such a way that a display element 230 is attached to the door lintel 111 of the car door 110. The display element 230 is mounted on the floor side and is therefore visible from the floor side when the car is waiting with the shaft door 120 open. The display element is therefore preferably used to display information that is relevant to passengers who are about to enter the car. In addition to the display element of the car door 230, a second display element 240 is present in the example shown. The display element 240 is mounted on the shaft door lintel 121 and can be used permanently to display information, since, in contrast to the display element 230, it is not covered by the closed shaft door 120.

The two display elements 230, 240 are attached offset in height so that in the event that both display elements 230, 240 are visible at the same time, a virtual display element is formed with the two display elements 230, 240 as sub-elements. The virtual display element produced in this way provides advantageous options for designing the display displayed on the display elements.

Another embodiment of the door system is shown in FIG Figure 2c shown. In this variant, the shaft door 120 is designed without lintel, since the drive of the shaft door 122 was integrated into the floor ceiling 105.

Because no shaft door lintel 121 is now available, the display element 241 has been integrated into the shaft door itself. It follows from this that the display element 241 is typically composed of a plurality of display sub-elements, since the shaft door 120 typically consists of a plurality of door sections or leaves which must be movable independently of one another when the door is opened. It also results from the positioning of the display element 241 on the shaft door 120 has the property that the display element is only visible when the shaft door 120 is closed, but disappears behind the floor wall when the door is open.

For this reason, in the example shown, a further display element 230 located behind display element 241 was attached in the example shown, which is predominantly congruent, i.e. overlapping, to display element 241 for an observer on the floor and can take the place of display element 241 when the shaft door 120 is open. This means that there is an option for display at any point in time when the elevator is in operation. In addition, the common presence of predominantly congruent display elements result in further favorable properties, such as the possibility of simultaneous, synchronized display of information while the shaft door is being opened, which in certain cases can create a positive visual impression.

In Fig. 3 an embodiment of a door system 300 according to the invention is shown as it is perceived by an observer on the floor, for example a waiting passenger. Fig. 3a shows the door system 300 with the shaft door 120 closed, Figure 2b shows the door system 300 with partially opened shaft door 120 and Figure 3c shows the door system 300 with the shaft door 120 fully open. The sequence a, b, c can be understood as a door opening sequence; The associated car door is not shown; it opens and closes at the same time as the shaft door and is always behind the shaft door 120 in the illustration shown.

The direction of movement of the shaft door leaves when opening is shown by the arrows 323; it can be seen that the shaft door 120 is a centrally opening sliding door. The shaft door 120 is designed without lintel and extends over the entire height between the floor 104 and the floor ceiling 105. In the perspective shown, it cannot be seen whether the car door is designed conventionally or without lintel, but this is not relevant for the aspects of the invention shown Concern.

When the shaft door 120 is opened, the difference area 115 becomes visible to the floor-side observer. The difference area arises due to the difference in height between the car door and the shaft door 120. The car door lintel 111, which has been provided with a cladding element, is located within the difference area. The cladding element comprises the display element 230 on which a display, in the case shown, the text “To 3rd Floor” is displayed.

In Fig. 4 a further embodiment of a door system 400 according to the invention is shown, the door system 400 largely comprising the features of the door system 300, so that these will not be discussed again.

In addition to the door system 300, the shaft door 120 of the door system 400, however, has a display element 241. For an observer on the floor side, the display element 241 is largely in the same position as the display element 230. The display elements 230, 241 are aligned from the point of view of the floor-side observer when the shaft door 120 is closed. However, the display element 230 is covered by the closed shaft door 120.

The display element 241, since it is visible at all times to an observer on the floor when the shaft door is closed, can also be used to display information when the elevator car is on another floor. Since the shaft door 120 is a centrally opening sliding door, the display element 241 consists of two display sub-elements, each door leaf of the shaft door 120 comprising a display sub-element.

When the shaft door 120 is opened, the door leaves of the shaft door and thus also the display sub-elements move in opposite directions 323 Figure 4b The partially open state of the shaft door 120 shown in the figure thus creates a state in which the display sub-elements of the display element 241 partially cover the display element 230 located behind it.

In the example shown, the display element 241 is therefore set up to display the display as a function of the degree of opening of the shaft door 120 along the move the respective direction of movement 323 so that the display does not change its position. At the same time, the display element 230 located behind it is also set up to display the display previously shown on the display element 241. In the example shown, the complete opening of the shaft door is indicated by a change from the display “To 3rd Floor” to the text “Welcome”.

The simultaneous shifting of the display and opening of the shaft door 120 can give the floor-side observer the impression that the display of the display element 241 would come to a standstill. The additional display on the display element 230 behind it can also give the impression that the display would fall or flow from the shaft door 120 onto the differential surface 115 when the shaft door 120 is opened. The two effects mentioned can be perceived as pleasant by a passenger.

The described embodiments have numerous advantages over conventional elevator door systems. In particular, the additional, architectural flexibility in the design of buildings, as well as the acquisition of a previously unavailable differential area 115 is a result of the novel door system, the elevator system, which includes the novel door system, and the use of the novel door system in an elevator system.

Claims (14)

Door system (100, 200, 300, 400) for an elevator system with a shaft and a car (101), comprising: - A car door (110) for the car (101) of the elevator system, - At least one shaft door (120) for separating at least one floor from the shaft of the elevator system, wherein the car door (110) is set up to open and close together with a current shaft door (120) of the at least one shaft door (120) in order to open the stationary car (101) to a current floor of the at least one floor, and
wherein the height of the car door (110) is less than the height of the current shaft door (120),
so that when the car door (110) and the current shaft door (120) are opened together, there is a height difference between the upper limit of the car door and the upper limit of the current shaft door, such that a difference area (115 ) is available. The door system according to claim 1, wherein when the current shaft door (120) and the car door (110) are opened together, the lower limit of the car door (110) is flush with the lower limit of the current shaft door (120). The door system according to claim 1 or 2, wherein the at least one shaft door is designed without a door lintel (121). The door system according to one of the preceding claims, wherein the car door is designed without a door lintel (111). The door system according to one of the preceding claims, wherein the at least one shaft door (120) and the car door (110) have independent drives, and wherein
the door system comprises a controller which is designed to control the drives of the car door and the at least one shaft door of the door system,
so that the at least one shaft door (120) and the car door (110) are mechanically driven independently of one another when they are opened and closed. The door system according to one of the preceding claims, wherein the height difference between the upper limit of the car door (110) and the upper limit of the current shaft door (120) is at least 150 mm. The door system according to one of the preceding claims, wherein the differential surface (115) is covered by a cladding element. The door system of claim 7, wherein the trim element is attached to the car (101) of the elevator system. The door system according to claim 7 or 8, wherein the cladding element delimits the shaft from the current floor when the shaft door (120) is open. The door system according to claim 7 to 9, wherein the trim element includes at least one display element (230). The door system according to claim 10, wherein the at least one landing door contains at least one display element (240, 241) on the floor side. The door system according to claim 11, wherein the at least one display element of the at least one shaft door (241) and the at least one display element of the cladding element (230) are at least partially overlapping and in the partially open state of the current shaft door (120) a common display element (230, 241) form. Elevator system comprising the door system according to one or more of the preceding claims. Use of the door system according to Claims 1 to 12 in an elevator system with at least two floors, at least one shaft door (120) being present on each of the at least two floors.

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