Door seal for a lift car

Abstract

The invention relates to a door seal (8) for a lift car (3), the door seal comprising: at least one first tube (10) and one second tube (11) made of an elastically deformable sealing material; the door seal being mountable on a car wall (4) and / or door (6) of the lift car in such a way that the first and the second tube, when the door closes a door opening (5) in the car wall, are arranged opposite one another within a door gap (9) in a bridging direction (13) and run at least in part around the door opening; the first tube having a pressure connection (14) and being deformable between a starting form and an end form, which is enlarged in the bridging direction compared to the starting form, by being exposed to a fluid pressure; the second tube having at least one pressure compensation opening (16), which is designed to allow a pressure compensation between an interior and a surrounding environment of the second tube when the second tube is compressed.

Description

[0001] Door seal for an elevator car

[0002] The present invention relates to a door seal for an elevator car. Furthermore, the invention relates to a method for controlling an elevator system, a control unit, a computer program, and a computer-readable medium for executing the method, as well as to an elevator system.

[0003] An elevator car, for example, for transporting people or goods in buildings, typically comprises a car wall with a door opening and a door to close the door opening. When the door closes the door opening, it is separated from the car wall by a horizontal door gap. To prevent air noise or vibrations from the door during travel of the elevator car, this door gap can be bridged using a height-adjustable door seal. The transverse forces exerted by the door seal on the door when active should not be excessive.

[0004] US Pat. No. 5,085,293, for example, describes an inflatable door seal that, when inflated, seals a gap between the wall of an elevator shaft and the wall of an elevator car. WO 2019 171 412 A1 and JP 2005 029 332 A also show inflatable door seals with a chamber. High pressure may be required to inflate the seals safely. This high pressure can lead to large transverse forces on the door.

[0005] There may therefore be a need for an improved door seal for an elevator car that, in the active state, enables sufficient sealing of the door gap without subjecting the door to excessive transverse forces. Furthermore, there may be a need for a corresponding method for controlling an elevator system, a corresponding control unit, a corresponding computer program, a corresponding computer-readable medium, and a corresponding elevator system.

[0006] These needs can be met by the subject matter of the independent claims. Advantageous embodiments are set forth in the dependent claims, the following description, and the accompanying figures.

[0007] A first aspect of the invention relates to a door seal for an elevator car, wherein the door seal is separated from the car wall by a door gap to be sealed. The door seal comprises at least a first tube and a second tube made of an elastically deformable sealing material. The door seal can be mounted on the car wall and / or the door in such a way that, when the door closes the door opening, the first tube and the second tube lie opposite one another within the door gap in a bridging direction in which the door seal is intended to bridge the door gap and extend at least partially around the door opening. The first tube has a pressure connection for applying fluid pressure to the first tube and can be deformed by changing the fluid pressure between an initial shape and a final shape that is enlarged in the bridging direction compared to the initial shape.The second hose has at least one pressure equalization opening which is designed to enable pressure equalization between an interior space and an environment of the second hose upon compression of the second hose.

[0008] The door seal makes it possible to limit the transverse forces acting on the door when the seal is active, thus adequately sealing the door gap and preventing excessive stress on the door mechanism. This prevents premature wear of the door mechanism due to repeated excessive transverse stress. Thanks to the reduced transverse stress, the door mechanism can also be manufactured with less complexity and thus more cost-effectively.

[0009] For example, the door may have different (horizontal) distances from the cabin wall in different sections of the door gap. This can be the case with a telescopic sliding door, whose sliding door panels are usually offset horizontally from each other. In addition, the horizontal distances between the door panels can vary due to inaccuracies during manufacturing and / or assembly.

[0010] With conventional inflatable door seals, the contact pressure with which the door seal is pressed against the door or cabin wall is usually set to a value at which the door seal just closes the door gap at its largest width (e.g., 6 mm), possibly plus a certain reserve in the event that the door gap has different widths in different areas and the door seal is required to simultaneously bridge the door gap at its smallest width (e.g., 3 mm) and at its largest width. Due to the contact pressure, high transverse forces can act on the door or cabin wall, particularly in the area of ​​the smallest width of the door gap.

[0011] In contrast, the approach presented here offers the advantage of significantly reducing the transverse load on the door or cabin wall in the area of ​​the smallest width of the door gap by controlling the transverse forces from the second tube, which can be compressed with comparatively little force. Nevertheless, the door gap can be adequately sealed in the area of ​​its largest width.

[0012] A second aspect of the invention relates to a method for controlling an elevator installation, wherein the elevator installation comprises an elevator shaft and an elevator car movable within the elevator shaft. The elevator car comprises a car wall with a door opening, a door for closing the door opening, and the door seal described above and below. When the door closes the door opening, the door is separated from the car wall by a door gap to be sealed. The door seal is mounted on the car wall and / or the door such that, when the door closes the door opening, the first hose and the second hose are opposite one another within the door gap in the bridging direction and extend at least partially around the door opening. The elevator installation further comprises a pressure supply unit connected to the pressure connection for providing the fluid pressure. The method comprises at least the following steps:

[0013] • if it is detected that the door seal is to be activated, ie the door gap is to be sealed: generating a first control signal for controlling the pressure supply unit, so that the fluid pressure in the first hose reaches a first value at which the first hose assumes the final shape, wherein the first hose in the final shape is enlarged in the bridging direction compared to the initial shape at least sc far enough that the door seal bridges the door gap;

[0014] • if it is detected that the door seal is to be deactivated, ie the door gap is to be released: generating a second control signal to control the pressure supply unit so that the fluid pressure in the first hose reaches a second value at which the first hose returns to its original shape.

[0015] The process can be carried out automatically by a processor.

[0016] The pressure supply unit can, for example, comprise a pneumatic and / or hydraulic pump for pumping a gas or a liquid. Additionally, the pressure supply unit can comprise at least one controllable valve for controlling the fluid pressure in the first hose. The pressure supply unit can, for example, be installed in the elevator car.

[0017] A third aspect of the invention relates to a control unit comprising a processor configured to execute the method described above and below. The control unit may comprise hardware and / or software modules. In addition to the processor, the control unit may comprise a memory and data communication interfaces for data communication with peripheral devices. The control unit may, for example, be connected to a higher-level elevator controller for data communication or be part of such an elevator controller. Alternatively, the control unit may be a door control unit for controlling the door of the elevator car.

[0018] Features of the process can also be understood as features of the control unit and vice versa.

[0019] A fourth aspect of the invention relates to an elevator installation comprising an elevator shaft and an elevator car movable within the elevator shaft, said elevator car comprising a car wall having a door opening, a door for closing the door opening, and the door seal described above and below. When the door closes the door opening, the door is separated from the car wall by a door gap to be sealed, and the door seal is mounted on the car wall and / or the door such that, when the door closes the door opening, the first hose and the second hose are opposite one another within the door gap in the bridging direction and extend at least partially around the door opening. Furthermore, the elevator installation comprises a pressure supply unit connected to the pressure connection for providing the fluid pressure, and the control unit described above and below.

[0020] Further aspects of the invention relate to a computer program and a computer-readable medium on which the computer program is stored.

[0021] The computer program comprises instructions which, when the computer program is executed by the processor, cause the processor to carry out the method described above and below.

[0022] The computer-readable medium may be a volatile or non-volatile data storage device. For example, the computer-readable medium may be a hard disk, a USB storage device, a RAM, ROM, EPROM, or flash memory. The computer-readable medium may also be a device that enables the download of program code.

[0023] Data communication network such as the Internet or a data cloud

[0024] Features of the method described above and below may also be understood as features of the computer program and / or the computer-readable medium and vice versa.

[0025] Without limiting the scope of the invention in any way, embodiments of the invention may be considered to be based on the ideas and findings described below.

[0026] The hoses can be made of the same or different sealing materials. The sealing material can be, for example, an elastomer, particularly an elastomer comprising a silicone compound.

[0027] For example, the final shape can be 1 mm to 10 mm larger in the bridging direction than the initial shape. Depending on the (largest or smallest) width of the door gap, other dimensional deviations between the initial and final shapes are also possible.

[0028] The second hose can, for example, be elastically compressible transversely to its longitudinal direction, i.e., compressible in such a way that, in the compressed state, it is prestressed with a restoring force acting in the direction of its (uncompressed) basic shape. This allows the second hose to return to its basic shape on its own when no further compression force acts on it.

[0029] For example, when the door seal is active, the second hose can be compressed to varying degrees in different longitudinal sections. This allows fluctuations in the width of the door gap to be compensated without placing excessive pressure and / or bending stress on the door or cabin wall.

[0030] The hoses can have the same cross-sectional shape and / or size in the unloaded state, or they can differ in their cross-sectional shape and / or size. For example, the first hose can have an elliptical cross-section and the second hose a circular cross-section (or vice versa). A box-shaped or teardrop-shaped cross-section of the first and / or second hose is also possible. In the simplest case, the pressure equalization opening can be an open end of the second hose. Alternatively, the pressure equalization opening can be an opening in a lateral surface of the second hose.

[0031] According to one embodiment, the first hose and the second hose can be connected to each other to form a hose assembly. The hose assembly can be produced, for example, by extrusion from one and the same sealing material. However, it is also possible for the second hose to be made of a different, in particular softer, sealing material than the first hose and / or the remaining hose assembly. These embodiments enable inexpensive production and easy assembly (and disassembly) of the door seal.

[0032] According to one embodiment, the hose assembly can be mounted on the cabin wall such that the first hose runs between the second hose and the cabin wall. Alternatively, the hose assembly can be mounted on the door such that the first hose runs between the second hose and the door. This can further simplify the assembly and disassembly of the door seal. In particular, this can facilitate the connection of the first hose to the pressure supply unit.

[0033] The first and second hoses can also be designed as separate hoses that can be mounted separately. For example, in this case, the first hose can be mounted on the cabin wall and the second hose on the door (or vice versa).

[0034] According to one embodiment, the second hose can have a plurality of pressure equalization openings distributed along its longitudinal direction. In particular, a lateral surface of the second hose can have several pressure equalization openings. For example, the pressure equalization openings can be arranged in several rows on opposite sides of the second hose. In this way, the force required to compress the second hose can be further reduced.

[0035] According to one embodiment, the first hose can be elastically deformable such that, in its final shape, it is prestressed with a restoring force acting in the direction of the initial shape. The elastically resilient properties of the first hose can be achieved, for example, by selecting a suitable sealing material and / or a suitable cross-sectional shape. This causes the first hose to return to its initial shape upon pressure equalization between the interior and the surroundings of the first hose.

[0036] According to one embodiment, the first tube can have an elliptical cross-section in its initial shape. This prevents excessive stretching of the first tube. This can improve the durability of the door seal.

[0037] According to one embodiment, a longitudinal direction of the elliptical cross-section can run obliquely or orthogonally to the bridging direction when the door seal is assembled. The longitudinal direction of the elliptical cross-section can correspond to a main axis of its elliptical shape. This has the advantage that the first tube is prestressed in its final shape with a restoring force acting in the direction of its initial shape without being excessively stretched. This can improve the durability of the door seal.

[0038] According to one embodiment, the first hose can have an elongated first profile on its outer surface, which is designed to engage positively and / or non-positively with an elongated first profile receptacle of the elevator car. The first hose and the first profile can, for example, have mutually parallel longitudinal directions. The first profile can, for example, be made of the same sealing material and / or in the same manufacturing step as the first hose and / or the hose assembly.

[0039] Additionally or alternatively, the second hose can have an elongated second profile on its outer surface, which is designed to engage positively and / or non-positively with an elongated second profile receptacle of the elevator car. The second hose and the second profile can, for example, have mutually parallel longitudinal directions. The second profile can, for example, be made of the same sealing material and / or in the same manufacturing step as the second hose and / or the hose assembly.

[0040] This simplifies the assembly and disassembly of the respective hose. Furthermore, such profiles can be manufactured particularly cost-effectively through extrusion, together with the respective hose.

[0041] According to one embodiment, an outer surface of the first hose and / or the second hose can have a static friction-reducing structure in a contact section that contacts the door and / or the cabin wall when the door gap is sealed. The structure can be formed, for example, by a plurality of elongated elevations whose longitudinal directions can be parallel to one another and / or to the longitudinal direction of the door seal. However, other static friction-reducing structures are also possible, for example, grid-like or knob-like structures. In this way, unwanted adhesion of the door seal to the door or cabin wall can be prevented when the door seal is active.

[0042] According to one embodiment, the difference between the first and second values ​​can be between 0.5 bar and 1.5 bar. Such a value range has proven particularly suitable for practical use in tests with typical door gap dimensions.

[0043] Advantageous embodiments of the invention are further explained below with reference to the accompanying drawings, wherein neither the drawings nor the explanations are to be interpreted as limiting the invention in any way.

[0044] Fig. 1 shows an elevator system according to an embodiment of the invention.

[0045] Fig. 2 shows a cross-sectional view of a portion of an elevator car from Fig. 1 with a door seal according to an embodiment of the invention in the active state.

[0046] Fig. 3 shows a cross-sectional view of a portion of an elevator car from Fig. 1 with a door seal according to an embodiment of the invention in the inactive state.

[0047] Fig. 4 shows a cross-sectional view of a door seal according to an embodiment of the invention in different states.

[0048] Fig. 5 shows a side view of a door seal according to an embodiment of the invention.

[0049] The figures are merely schematic and not to scale. The same reference numerals designate the same or equivalent features in the various drawings.

[0050] Fig. 1 shows an elevator system 1 comprising an elevator shaft 2 and an elevator car 3 that can be moved vertically within the elevator shaft 2 between different floors. The elevator car 3 comprises a car wall 4 with a door opening 5 through which the elevator car 3 can be entered from the floors. The door opening 5 can be closed by a door 6, here, for example, a sliding door with two door leaves 7 that can be moved relative to each other in opposite horizontal directions.

[0051] Fig. 1 shows the elevator car 3 in the closed state, in which the door 6 closes the door opening 5 with its two door leaves 7.

[0052] A door seal 8 runs around the door opening 5, more precisely to the left, right and above the door opening 5, which, in the active state, seals a horizontal door gap 9 (see Fig. 2 and Fig. 3) between the cabin wall 4 and the door leaves 7.

[0053] As can be seen in Fig. 2, Fig. 3, Fig. 4 and Fig. 5, the door seal 8 comprises a first tube 10 and a second tube 11 made of an elastically deformable sealing material, for example an elastomer such as EPDM, MVQ, silicone or VMQ.

[0054] The two hoses 10, 11 can, for example, be connected to each other to form a hose assembly 12 (see Fig. 4 and Fig. 5). Alternatively, the two hoses 10, 11 can be individual hoses that can be mounted separately from one another.

[0055] In this example, the door seal 8 is mounted on the cabin wall 4 in such a way that the two hoses 10, 11 are at least partially opposite each other in a (horizontal) bridging direction 13, in which the door seal 8 is intended to bridge the door gap 9 in the active state of the door seal 8.

[0056] Alternatively, the door seal 8 can be mounted on the door 6 and can be moved together with it.

[0057] The positions of the two hoses 10, 11 with respect to the bridging direction 13 can also be reversed.

[0058] The first hose 10 has a pressure connection 14 (see Fig. 1) that is fluidly connected to a pressure supply unit 15 for providing a fluid pressure, for example in the form of compressed air. The pressure supply unit 15 can comprise an electrically controllable pneumatic valve for controlling the fluid pressure. By changing the fluid pressure within the first hose 10, it can be deformed between an initial shape (see Fig. 3) and a final shape (see Fig. 2) that is enlarged compared to the initial shape in the bridging direction 13.

[0059] The second hose 11, however, is not connected to the pressure supply unit 15. Instead, the second hose 11 comprises at least one pressure equalization opening 16, for example, a plurality of lateral pressure equalization openings 16, which can be distributed over a longitudinal section of the second hose 11 or its entire length (see Fig. 5).

[0060] The pressure equalization opening(s) 16 enable (enable) pressure equalization between a hollow space of the second hose 11 and its surroundings whenever the second hose 11 is compressed horizontally upon activation of the door seal 8. Thus, the transverse load on the door 6, i.e., the door leaves 7, caused by the door seal 8 in the active state can be significantly reduced. Furthermore, fluctuations in the width of the door gap 9, for example due to horizontally offset door leaves 7 (e.g., in the case of a telescopic sliding door) or due to inaccuracies during manufacturing and / or assembly, can be compensated for without the door seal 8 placing excessive and / or uneven loads on the door leaves 7.

[0061] Fig. 2 shows the active state of the door seal 8, in which the first hose 10 is inflated to such an extent that the second hose 11 touches the door leaves 7 opposite the cabin wall 4 with a contact section of its outer surface. The second hose 11 can be compressed to a greater or lesser extent. In the best case, the second hose 11 rests only lightly against the respective inner side of the door leaves 7, so that the door gap 9 is sealed, but the door leaves 7 are not subjected to any significant load by the door seal 8. Even if the second hose 11 is severely deformed, the door leaves 7 are still not subjected to any significant load by the door seal 8.

[0062] Fig. 3 shows the inactive state of the door seal 8, in which the door gap 9 is released so that the door leaves 7 can be moved unhindered.

[0063] The first tube 10 can, for example, have an elliptical cross-section in its initial shape. This has the effect that the first tube 10, in its final shape, is prestressed with a restoring force acting in the direction of the initial shape, i.e., opposite to the bridging direction 13, without being excessively stretched. This can improve the durability of the door seal 8. As shown in Fig. 3, a main axis 17 of the elliptical shape (i.e., its longitudinal direction) can run orthogonal to the bridging direction 13. Thus, the stretching of the first tube 10 can be reduced to a minimum.

[0064] As shown in Fig. 4, the door seal 8 can have a friction-reducing structure 18 in the contact section, which is formed here by way of example by a section of the outer surface of the second tube 11, which helps to prevent undesired adhesion of the contact section to the respective counterpart, here to the door leaves 7, in the active state of the door seal 8.

[0065] In this example, the structure 18 is formed by a plurality of elongated elevations on the outer surface, the longitudinal directions of which each run parallel to the longitudinal direction of the second tube 11. However, other structures that reduce static friction are also possible, such as grid-like or knob-like structures.

[0066] In addition, the hose assembly 12 shown in Fig. 4 and Fig. 5 is designed, for example, with an elongated first profile 19 for mounting the door seal 8 on the car wall 4, which extends along an outer surface of the first hose 10 facing away from the second hose 11 in the longitudinal direction thereof and, in the mounted state of the door seal 8, engages non-positively and / or positively in a corresponding first profile holder 20 of the elevator car 3.

[0067] The first profile 19 can in particular be produced as part of the hose assembly 12, ie from the same material and / or in the same manufacturing step as the two hoses 10, 11.

[0068] The first profile holder 20 can be formed, for example, by a U- or C-shaped profile strip embedded in the cabin wall 4.

[0069] Alternatively, the second hose 11 can be designed in a corresponding manner with a second profile, which can be connected in a corresponding manner in a force-fitting and / or form-fitting manner to a second profile holder of the elevator car 3.

[0070] Fig. 4 also shows different degrees of deformation of the door seal 8. In the inactive state (shown with dashed lines), the door seal 8 has its smallest height Ho with respect to the bridging direction 13. Its greatest height H max, however, is reached by the door seal 8 when the first tube 10 assumes its final shape and the second tube 11 is barely compressed. Fluctuations in the width of the door gap 9 can be compensated for by compressing the second tube 11 in and / or against the bridging direction 13, while the first tube 10 retains its final shape, to such an extent that the door seal 8 has an intermediate height Hi between the smallest height Ho and the largest height Hmax that is sufficient to seal the door gap 9.

[0071] A difference between Ho and H max can be, for example, 5 mm to 10 mm.

[0072] A difference between Hi and H max can be, for example, 5 mm or less.

[0073] Basically, the door seal 8 can be divided into three sections:

[0074] • a base section for fixing to a corresponding counterpart, in particular for mechanical fixing and / or bonding;

[0075] • a pressure section which can be pressurised with compressed air in order to inflate the door seal 8;

[0076] • a compensation section with at least one pressure equalization opening 16, which can be compressed with little force and which can compensate for any lateral offset of the two door leaves 7.

[0077] It is possible for the compensation section, i.e., the second tube 11 forming the compensation section, to be made of a softer material than the rest of the door seal 8. Thus, the transverse load acting on the door leaves 7 can be further reduced due to the improved force-displacement ratio.

[0078] The distance between the door seal 8 and the surface of the cabin wall 4 can be set to the following values, for example, according to EN81-2C:

[0079] • Ho: 0 mm distance, ie the door seal 8 is flush with the cabin wall 4 and allows the door 6 to pass through without restriction;

[0080] • Hi: 3 mm distance (this corresponds to the smallest permissible gap between the door 6 and the cabin wall 4);

[0081] • H max : 6 mm distance (this corresponds to the largest permissible gap between the door 6 and the cabin wall 4).

[0082] The fluid pressure for activating the door seal 8 can be adjusted so that the door seal 8 is raised to the height H maxis expanded. This ensures that the door seal 8 completely bridges the door gap 9 in every case. In addition, a specific reserve pressure can be provided. The pressure supply unit 15 is coupled to a control unit 21 (see Fig. 1), for example a door control unit of the elevator car 3, which comprises a processor 22 configured to execute a method described below for controlling the elevator installation 1, more precisely for activating or deactivating the door seal 8, by executing a computer program stored in a memory of the control unit 21.

[0083] To this end, the control unit 21 generates a first control signal 23 in a first step when it has detected that the door seal 8 is to be activated, i.e., the door gap 9 is to be sealed. This can be the case, for example, shortly after the door 6 is closed. The first control signal 23 causes the pressure supply unit 15 to change the fluid pressure in the first hose 10, in particular to increase it to such an extent that it reaches a first value at which the first hose 10 assumes its final shape. Thus, the door seal 8 rests with the contact section against the door panels 7 and seals the door gap 9.

[0084] If, however, the control unit 21 detects that the door seal 8 is to be deactivated again, i.e. the door gap 9 is to be opened again (which can be the case, for example, during the journey shortly before the elevator car 3 stops at a floor), it generates a second control signal 24 which causes the pressure supply unit 15 to change the fluid pressure in the first hose 10, in particular to reduce it to such an extent that it reaches a second value at which the first hose 10 again assumes its original shape, i.e. at which the door seal 8 again has its smallest height Ho, so that the door seal 8 is separated from the door leaves 7 by a sufficient air gap in good time before the door 6 opens.

[0085] A difference between the first and the second value can be, for example, 0.5 bar to 1.5 bar.

[0086] Finally, it should be noted that terms such as "having," "comprising," etc., do not exclude other parts or steps, and indefinite articles 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 features or steps described with reference to other of the above embodiments. Reference signs in the claims are not to be considered as limitations.

Claims

Claims 1. Door seal (8) for an elevator car (3), wherein the elevator car (3) comprises a car wall (4) with a door opening (5) and a door (6) for closing the door opening (5), wherein the door (6), when closing the door opening (5), is separated from the car wall (4) by a door gap (9) to be sealed, wherein the door seal (8) comprises: a first tube (10) made of an elastically deformable sealing material; wherein the first tube (10) has a pressure port (14) for pressurizing the first tube (10) with a fluid pressure and is deformable by changing the fluid pressure between an initial shape and an end shape that is enlarged in the bridging direction (13) compared to the initial shape;characterized in that the door seal (8) comprises at least one further second hose (11) made of an elastically deformable sealing material, wherein the door seal (8) can be mounted on the cabin wall (4) and / or the door (6) such that, when the door (6) closes the door opening (5), the first hose (10) and the second hose (11) are opposite each other within the door gap (9) in a bridging direction (13) in which the door seal (8) is intended to bridge the door gap (9) and extend at least partially around the door opening (5); wherein the second hose (11) has at least one pressure equalization opening (16) which is designed to allow pressure equalization between an interior space and an environment of the second hose (11) when the second hose (11) is compressed.

2. Door seal (8) according to claim 1, wherein the first hose (10) and the second hose (11) are connected to each other to form a hose assembly (12).

3. Door seal (8) according to claim 2, wherein the hose assembly (12) can be mounted on the cabin wall (4) such that the first hose (10) runs between the second hose (11) and the cabin wall (4); or wherein the hose assembly (12) can be mounted on the door (6) such that the first hose (10) runs between the second hose (11) and the door (6).

4. Door seal (8) according to one of the preceding claims, wherein the second hose (11) has a plurality of pressure equalization openings (16) distributed in its longitudinal direction.

5. Door seal (8) according to one of the preceding claims, wherein the first hose (10) is elastically deformable such that it is prestressed in the final shape with a restoring force acting in the direction of the initial shape.

6. Door seal (8) according to one of the preceding claims, wherein the first hose (10) has an elliptical cross-section in its initial form.

7. Door seal (8) according to claim 6, wherein a longitudinal direction (17) of the elliptical cross-section in the mounted state of the door seal (8) is inclined or orthogonal to the Bridging direction (13) runs.

8. Door seal (8) according to one of the preceding claims, wherein the first hose (10) has on its outer surface an elongated first profile (19) which is designed to engage in an elongated first profile receptacle (20) of the elevator car (3) in a form-fitting and / or force-fitting manner; and / or wherein the second hose (11) has on its outer surface an elongated second profile which is designed to engage in an elongated second profile receptacle of the elevator car (3) in a form-fitting and / or force-fitting manner.

9. Door seal (8) according to one of the preceding claims, wherein an outer surface of the first hose (10) and / or the second hose (11) in a contact section which, in the sealed state of the door gap (9), contacts the door (6) and / or the cabin wall (4), has a friction-reducing structure (18).

10. Method for controlling an elevator system (1), wherein the elevator system (1) comprises an elevator shaft (2) and an elevator car (3) movable in the elevator shaft (2); wherein the elevator car (3) comprises a car wall (4) with a door opening (5), a door (6) for closing the door opening (5) and the door seal (8) according to one of the preceding claims, wherein the door (6), when it closes the door opening (5), is separated from the cabin wall (4) by a sealing door gap (9), and wherein the door seal (8) is mounted on the cabin wall (4) and / or the door (6) such that the first hose (10) and the second hose (11), when the door (6) closes the door opening (5), are opposite each other within the door gap (9) in the bridging direction (13) and extend at least partially around the door opening (5); wherein the elevator system (1) further comprises a pressure supply unit (15) connected to the pressure connection (14) for providing the fluid pressure;wherein the method comprises: when it is detected that the door seal (8) is to be activated: generating a first control signal (23) to control the pressure supply unit (15) so that the fluid pressure in the first hose (10) reaches a first value at which the first hose (10) assumes the final shape, wherein the first hose (10) in the final shape is enlarged in the bridging direction (13) at least to such an extent that the door seal (8) bridges the door gap (9);When it is detected that the door seal (8) is to be deactivated: generating a second control signal (24) to control the pressure supply unit (15) so that the fluid pressure in the first hose (10) reaches a second value at which the first hose (10) returns to its initial shape. Method according to claim 10, wherein the difference between the first value and the second value is 0.5 bar to 1.5 bar. Control unit (21) comprising a processor (22) configured to execute the method according to claim 10 or 11. Elevator system (1) comprising: an elevator shaft (2);an elevator car (3) movable in the elevator shaft (2), comprising a car wall (4) with a door opening (5), a door (6) for closing the door opening (5) and the door seal (8) according to one of claims 1 to 9, wherein the door (6), when it closes the door opening (5), is separated from the car wall (4) by a door gap (9) to be sealed, and wherein the door seal (8) is mounted on the car wall (4) and / or the door (6) in such a manner; that the first hose (10) and the second hose (11), when the door (6) closes the door opening (5), lie opposite each other within the door gap (9) in the bridging direction (13) and extend at least partially around the door opening (5); a pressure supply unit (15) connected to the pressure port (14) for providing the fluid pressure; and the control unit (21) according to claim 12. Computer program comprising instructions that, when the computer program is executed by the processor (22), cause the method according to claim 10 or 11 to be carried out. Computer-readable medium on which the computer program according to claim 14 is stored.

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