Door seal for elevator car

Abstract

A door seal (8) for an elevator car (3) comprises: at least one first hose (10) and at least one second hose (11) made of an elastically deformable material; wherein the door seal can be mounted on a car wall (4) and / or a door (6) of the elevator car in such a way that, when the door (6) closes the door opening (5), the first hose and the second hose lie opposite one another in a bridging direction (13) in the door gap (9) and extend at least partially around the door opening (5); wherein the first hose has a pressure connection (14) and can be deformed between an initial shape and a final shape, which is enlarged in the bridging direction compared to the initial shape, by applying a fluid pressure; wherein the second hose has at least one pressure compensation opening (16), which is designed to achieve a pressure compensation between the interior of the second hose and the external environment when the second hose is compressed.

Description

Technical Field

[0001] The invention relates to a door seal for an elevator car. The invention further relates to a method for controlling an elevator installation, a control unit, a computer program and a computer-readable medium for executing the method, and to an elevator installation. Background Art

[0002] Elevator cars, for example, for transporting people or goods in buildings, usually comprise a car wall with a door opening and a door that can close the door opening, wherein the door is separated from the car wall by a horizontal door gap when the door opening is closed. In order to avoid air noise or vibrations of the door during travel of the elevator car, the door gap can be bridged by means of a door seal that is adjustable in height. In this case, the transverse forces exerted on the door by the door seal should not be too great.

[0003] US5,085,293, for example, describes an inflatable door seal which, in the inflated state, seals the gap between the wall of the elevator shaft and the wall of the elevator car. WO2019171412A1 and JP2005029332A also show door seals, inflatable door seals with chambers. In order to reliably inflate the seal, a high pressure is required. This high pressure can generate a large lateral force on the door. Summary of the invention

[0004] Therefore, there is a need for an improved door seal for an elevator car, which in the activated state achieves a sufficient degree of sealing of the door gap without loading the door with excessive lateral forces. In addition, there is 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.

[0005] These needs are achieved by the subject matter of the independent claims. Advantageous embodiments are described in the following description and in the drawings.

[0006] A first aspect of the invention relates to a door seal for an elevator car, the elevator car comprising a car wall with a door opening and a door for closing the door opening, the door being separated from the car wall by a door gap to be sealed when the door seals the door opening. The door seal comprises at least one first hose and a second hose 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 hose and the second hose are arranged opposite each other in the door gap and in a bridging direction and extend at least partially around the door opening, along which the door seal should bridge the door gap. The first hose has a pressure connection for applying a fluid pressure to the first hose and can be deformed between an initial shape and a final shape that is enlarged in the bridging direction compared to the initial shape by changing the fluid pressure. The second hose has at least one pressure compensation opening for achieving pressure compensation between the inner cavity of the second hose and the external environment when the second hose is compressed.

[0007] The door seal makes it possible to limit the transverse forces acting on the door in the activated state of the door seal in such a way that, on the one hand, the door gap is sealed sufficiently and, on the other hand, excessive loading of the door mechanism is avoided. Thus, premature wear of the door mechanism due to repeated excessive loading in the transverse direction can be prevented. Due to the reduced loading in the transverse direction, the door mechanism can also be manufactured in an inherently less complex and therefore more cost-effective manner.

[0008] The door can, for example, have different (horizontal) spacings from the car wall in different sections of the door gap. This can be the case in telescopic sliding doors, whose displaceably supported door leaves are usually horizontally offset from one another. In addition, the horizontal spacing of the door leaves can fluctuate due to inaccuracies in manufacturing and / or assembly.

[0009] In conventional inflatable door seals, the contact pressure with which the door seal is pressed against the door or the car wall is usually set to a value at which the door seal closes the door gap only in the region of its maximum width (e.g. 6 mm), with a certain allowance if necessary for the case where the door gap has different widths in different regions and the door seal is to bridge the door gap both in the region of the minimum width (e.g. 3 mm) and in the region of its maximum width. In this case, due to the contact pressure, especially in the region of the minimum width of the door gap, high transverse forces act on the door or the car wall.

[0010] The solution proposed here, on the other hand, offers the advantage that the transverse load on the door or car wall in the region of the smallest width is greatly reduced by determining the transverse force of the second hose, which can be compressed with relatively little force. However, the door gap can still be sealed sufficiently in the region of its largest width.

[0011] A second aspect of the present invention relates to a method for controlling an elevator device, wherein the elevator device comprises: an elevator shaft and an elevator car that can travel in the elevator shaft, the elevator car having a car wall with a door opening, a door for closing the door opening, and a door seal as described above and below, wherein when the door closes the door opening, the door is separated from the car wall by a door gap to be closed, and the door seal is mounted on the car wall and / or the door in such a way that when the door closes the door opening, a first hose and a second hose are opposite to each other in a bridging direction within the door gap and extend at least partially around the door opening. The elevator device also comprises a pressure supply unit connected to the pressure connector for providing fluid pressure. The method comprises at least the following steps:

[0012] When it is confirmed that the door seal should be activated, that is, the door gap should be sealed: a first control signal is generated to control the pressure supply unit so that the fluid pressure in the first hose reaches a first value, and at the first value of the fluid pressure, the first hose takes a final shape, wherein the first hose is enlarged in the bridging direction in the final shape compared to the initial shape at least to the extent that the door seal bridges the door gap;

[0013] When it is confirmed that the door seal should be deactivated, that is, the door gap should be opened: a second control signal is generated to control the pressure supply unit so that the fluid pressure in the first hose reaches a second value, and under the second value of the fluid pressure, the first hose assumes the initial shape again.

[0014] The method may be automatically performed by a processor.

[0015] The pressure supply unit may, for example, include a pneumatic part and / or a hydraulic pump to pump gas or liquid. In addition, the pressure supply unit may include at least one controllable valve to control the fluid pressure in the first hose. For example, the pressure supply unit may be installed in an elevator car.

[0016] A third aspect of the invention relates to a control unit comprising a processor configured to perform the methods described above and below. The control unit may comprise a hardware module and / or a software module. In addition to the processor, the control unit may also comprise a memory and a data communication interface for data communication with peripheral devices. For example, the control unit may be connected to an elevator controller located at a higher level for data communication, or may be part of such an elevator controller. Alternatively, the control unit may be a door control unit for controlling elevator car doors.

[0017] Features of the method can also be understood as features of the control unit and vice versa, features of the control unit can also be understood as features of the method.

[0018] A fourth aspect of the invention relates to an elevator installation, comprising: an elevator shaft and an elevator car movable in the elevator shaft, the elevator car comprising a car wall with a door opening, a door for closing the door opening, and a door seal as described above and below, wherein when the door closes the door opening, the door is separated from the car wall by a door gap to be closed, and the door seal is mounted on the car wall and / or the door in such a way that when the door closes the door opening, a first hose and a second hose are located opposite each other in the door gap in a bridging direction and extend at least partially around the door opening. In addition, the elevator installation comprises a pressure supply unit connected to the pressure connection for providing a fluid pressure and a control unit as described above and below.

[0019] Further aspects of the invention relate to a computer program and to a computer-readable medium on which the computer program is stored.

[0020] The computer program comprises the following instructions, which, when a processor executes the computer program, cause the processor to execute the method described above and below.

[0021] 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 (random access memory), a ROM (read-only memory), an EPROM (erasable programmable read-only memory), or a flash memory. The computer readable medium may also be a data communication network, such as the Internet or a data cloud, that enables program code downloads.

[0022] Features of the method described in the preceding and following text may also be considered features of the computer program and / or the computer-readable medium, and vice versa, features of the computer program and / or the computer-readable medium may also be considered features of the method described in the preceding and following text.

[0023] Without limiting the scope of the invention in any way, embodiments of the invention may be viewed as being based on the concepts and insights described below.

[0024] The hose can be made of the same or different sealing materials. For example, the sealing material can be an elastomer, in particular an elastomer comprising a silicone compound.

[0025] For example, the final shape can be enlarged by 1 mm to 10 mm in the bridging direction compared to the initial shape. Depending on the (maximum or minimum) width of the door gap, other dimensional deviations can also exist between the initial shape and the final shape.

[0026] The second hose can be elastically compressed, for example, transversely to its longitudinal direction, i.e. in such a way that the second hose is prestressed in the compressed state with a restoring force acting in the direction of its (uncompressed) basic shape. This has the effect that the second hose returns itself to its basic shape when no compressive force acts on the second hose.

[0027] The second hose can be compressed with different strengths in different longitudinal sections, for example in the activated state of the door seal. Thus, fluctuations in the door gap width can be compensated without excessively loading the door or the car wall with pressure and / or bending moments.

[0028] The hoses can have the same cross-sectional shape and / or cross-sectional dimensions in the unloaded state or they can differ in their cross-sectional shape and / or cross-sectional dimensions. For example, the first hose can have an oval cross section and the second hose a circular cross section (or vice versa). Box-shaped or drop-shaped cross sections of the first and / or second hose are also possible.

[0029] In the simplest case, the pressure compensation opening can be the open end of the second hose. Alternatively, the pressure compensation opening can be an opening in the jacket surface of the second hose.

[0030] According to one embodiment, the first hose and the second hose can be connected to each other to form a hose composite. The hose composite can be produced, for example, by extrusion from one and the same sealing material. However, the second hose can also be made of a different, in particular soft, sealing material than the first hose and / or the rest of the hose composite. These embodiments allow for inexpensive production and simple assembly (and disassembly) of the door seal.

[0031] According to one embodiment, the hose assembly can be mounted on the car wall in such a way that the first hose extends between the second hose and the car wall. Alternatively, the hose assembly can be mounted on the door in such a way that the first hose extends between the second hose and the door. Thus, the assembly (and disassembly) of the door seal can be further simplified. In particular, this can make it easier to connect the first hose to the pressure supply unit.

[0032] The first hose and the second hose can also be designed as separate hoses that can be installed separately from each other. For example, in this case, the first hose can be installed on the car wall, and the second hose can be installed on the door (also possible in reverse).

[0033] According to one embodiment, the second hose can have a plurality of pressure compensation openings dispersedly arranged in its longitudinal direction. In particular, the jacket surface of the second hose can have a plurality of pressure compensation openings. For example, the pressure compensation openings can be arranged in a plurality of rows on mutually opposite sides of the second hose. In this way, the force required to compress the second hose can be further reduced.

[0034] According to one embodiment, the first hose can be elastically deformed in such a way that the first hose is prestressed in the final shape by a restoring force acting in the direction of the initial shape. The elastic properties of the first hose can be achieved, for example, by selecting a suitable sealing material and / or a suitable cross-sectional shape. This allows the first hose to return to its initial shape when the first hose performs pressure compensation between the inner cavity and the external environment.

[0035] According to one embodiment, the first hose may have an elliptical cross section in its initial shape, thereby preventing the first hose from being overstretched, and thus improving the durability of the door seal.

[0036] According to one embodiment, the longitudinal direction of the oval cross section can extend obliquely or orthogonally to the bridging direction in the assembled state of the door seal. The longitudinal direction of the oval cross section can correspond to the main axis of its oval shape. This has the advantage that the first hose is prestressed in the final shape by a restoring force acting in the direction of the initial shape without overstretching. As a result, the durability of the door seal can be improved.

[0037] According to one embodiment, the first hose can have an elongated first profile on its outer surface, which is designed to be inserted into an elongated first profile receptacle of the elevator car in a positive and / or non-positive manner. The first hose and the first profile can, for example, have longitudinal directions parallel to one another. The first profile can be made of the same sealing material as the first hose and / or the hose assembly and / or can be produced in the same production steps.

[0038] Additionally or alternatively, the second hose can have an elongated second profile on its outer surface, which is designed to be inserted in a positive and / or non-positive manner into an elongated second profile receptacle of the elevator car. The second hose and the second profile can, for example, have longitudinal directions parallel to one another. The second profile can be made of the same sealing material as the second hose and / or the hose assembly and / or can be produced in the same production steps.

[0039] This simplifies the assembly (and disassembly) of the corresponding hose. In addition, these profiles can be manufactured particularly cost-effectively by an extrusion process together with the corresponding hose.

[0040] According to one embodiment, the outer surface of the first hose and / or the second hose can have a structure that reduces static friction in a contact section that contacts the door and / or the car wall in the sealed state of the door. The structure can be formed, for example, by a plurality of elongated projections, the longitudinal direction of which can be parallel to each other and / or to the longitudinal direction of the door seal. However, other structures that reduce static friction are also possible, such as a grid-like or granular structure. In this way, in the activated state of the door seal, undesirable adhesion of the door seal to the door or the car wall can be avoided.

[0041] According to one embodiment, the difference between the first value and the second value is 0.5 bar to 1.5 bar. Tests have shown that such a value range is particularly practical in the case of common dimensions of door gaps. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In the following, advantageous embodiments of the invention are further explained with reference to the drawings, wherein neither the drawings nor the explanations are to be regarded as limiting the invention in any way.

[0043] Figure 1 An elevator installation according to an embodiment of the present invention is shown.

[0044] Figure 2 Show Figure 1 0014] A segmented cross-sectional view of an elevator car in FIG. 1 with a door seal according to an embodiment of the invention in an activated state.

[0045] Figure 3 Show Figure 1 0013] A segmented cross-sectional view of an elevator car in FIG. 1 with a door seal according to an embodiment of the invention in a non-activated state.

[0046] Figure 4 Cross-sectional views of embodiments according to the invention are shown in different states.

[0047] Figure 5 A side view of a door seal according to an embodiment of the present invention is shown.

[0048] The drawings are schematic only and are not drawn to scale. The same reference numerals in different drawings refer to the same or equivalent features. DETAILED DESCRIPTION

[0049] Figure 1An elevator installation 1 is shown, which comprises an elevator shaft 2 and an elevator car 3 which can be moved vertically between different floors in the elevator shaft. The elevator car 3 comprises a car wall 4 with a door opening 5, through which the elevator car 3 can be accessed from the floors. The door opening 5 can be closed by means of a door 6, here a sliding door with two door leaves 7 which can be displaced relative to each other in mutually opposite horizontal directions.

[0050] Figure 1 The elevator car 3 is shown in the closed state, in which the door 6 closes the door opening 5 with its two door leaves 7 .

[0051] A door seal 8 extends around the door opening, more precisely to the left, to the right and above the door opening 5, and in the activated state seals a horizontal door gap 9 between the car wall 4 and the door leaf 7 (see Figure 2 and Figure 3 ).

[0052] like Figure 2 , Figure 3 , Figure 4 and Figure 5 It can be seen that the door seal 8 includes a first hose 10 and a second hose 11 made of an elastically deformable sealing material (for example, an elastomer such as EPDM (ethylene propylene diene monomer), MVQ (silicone rubber), silicone resin or VMQ (silicone rubber)).

[0053] The two hoses 10, 11 can be connected to each other to form a hose composite 12 (see Figure 4 and Figure 5 ). Alternatively, the two hoses 10, 11 may be a single hose that can be assembled separately from each other.

[0054] In this example, the door seal 8 is mounted on the car wall 4 in such a way that the two hoses 10 , 11 lie at least partially opposite one another in a (horizontal) bridging direction 13 in which the door seal 8 is intended to bridge the door gap 9 in the activated state of the door seal 8 .

[0055] Alternatively, the door seal 8 may be mounted on the door 6 and may be displaced together with the door.

[0056] The positions of the two hoses 10 , 11 with respect to the bridging direction 13 can also be exchanged.

[0057] The first hose 10 has a pressure connection 14 (see Figure 1 ), the pressure connector can be fluidically connected to the pressure supply unit 15 to provide fluid pressure, for example in the form of compressed air. The pressure supply unit 15 can include an electrically controllable pneumatic valve to control the fluid pressure.

[0058] By changing the fluid pressure in the first hose 10, the first hose can be in the initial shape (see Figure 3 ) and a final shape which is enlarged in the bridging direction 13 compared to the initial shape (see Figure 2 ) between deformations.

[0059] In contrast, the second hose 11 is not connected to the pressure supply unit 15. Instead, the second hose 11 comprises at least one pressure compensation opening 16, for example a plurality of lateral pressure compensation openings 16, which can be arranged dispersedly on a longitudinal section of the second hose 11 or on its entire length (see Figure 5 ).

[0060] Whenever the second hose 11 is flattened horizontally when the door seal 8 is activated, the pressure compensation opening(s) 16 allow pressure compensation between the second hose 11 and its external environment. The lateral load loading of the door 6, i.e. the door leaf 7, is thus significantly reduced by the door seal 8 in the activated state. Furthermore, fluctuations in the width of the door gap 9, for example due to horizontally offset door leaves 7 (for example in the case of telescopic sliding doors) or due to inaccuracies during production and / or assembly, can be compensated for thereby without the door seal 8 having to load the door leaf 7 too strongly and / or with different strengths.

[0061] Figure 2 The activated state of the door seal 8 is shown, in which the first hose 10 is inflated to such an extent that the second hose 11 with its outer surface contacting section contacts the door leaf 7 opposite the car wall 4. In this case, the second hose 11 can be compressed to a greater or lesser degree. In the most favorable case, the second hose 11 only slightly rests on the corresponding inner side of the door leaf 7, so that although the door gap 9 is sealed, the door leaf 7 is not significantly loaded by the door seal 8. Even if the second hose 11 is greatly deformed, the door leaf 7 is still not significantly loaded by the door seal 8.

[0062] Figure 3 The door seal 8 is shown in the inactive state, in which the door gap 9 is open so that the door leaf can be displaced unhindered.

[0063] The first hose 10 can have an oval cross section in the initial shape, for example. This has the effect that the first hose 10 is prestressed in the final shape with a restoring force acting in the direction of the initial shape, i.e., opposite to the bridging direction, without overstretching. This can improve the durability of the door seal 8.

[0064] like Figure 3 As shown, the main axis 17 of the oval, ie its longitudinal direction, can extend orthogonally to the bridging direction 13. Thus, the stretching of the first hose 10 can be minimized.

[0065] like Figure 4 As shown, the door seal 8 can have a structure 18 for reducing static friction in the contact segment, which is formed here, for example, by a segment of the outer surface of the second hose 11. The structure for reducing static friction helps to avoid unwanted adhesion of the contact segment to the corresponding matching component (here, on the door leaf 7) when the door seal 8 is activated.

[0066] In this example, the structure 18 is formed by a plurality of elongated protrusions on the outer surface, the longitudinal directions of which extend parallel to the longitudinal direction of the second hose 11. However, other structures for reducing static friction, such as grid-like or granular structures, are also feasible.

[0067] Additionally, in Figure 4 and Figure 5 The hose assembly 12 shown in the figure is, for example, embodied with an elongated first profile 19 for mounting the door seal 8 on the car wall 4, which first profile extends along the outer surface of the first hose 10 facing away from the second hose 11 in its longitudinal direction and, in the mounted state of the door seal 8, is embedded in a corresponding first profile receptacle 20 of the elevator car 3 in a force-fitting and / or form-fitting manner.

[0068] The first profile 19 can be produced, in particular, as part of the hose composite 12 , ie from the same material and / or in the same production steps as the two hoses 10 , 11 .

[0069] The first profile receptacle 20 can be formed, for example, by a U-shaped or C-shaped profile edge which engages in the cage wall 4 .

[0070] Alternatively, the second hose 11 can be designed accordingly with a second profile which can be connected in a corresponding manner with a force-fitting and / or locking manner to a second profile receptacle of the elevator car 3 .

[0071] Figure 4 Also shown are different degrees of deformation of the door seal 8. In the inactive state (shown as a dashed line), the door seal 8 has its smallest height H0 relative to the bridging direction 13. Conversely, the maximum height H0 of the door seal is reached when the first hose 10 assumes the final shape and the second hose 11 is barely compressed. max Fluctuations in the width of the door gap 9 can be compensated in that, while the first hose 10 retains its final shape, the second hose 11 is compressed in and / or against the bridging direction 13 to such an extent that the door seal 8 has a minimum height H0 and a maximum height H max The middle height H1 is sufficient to seal the door gap 9.

[0072] H0 and H maxThe difference between may be, for example, 5 mm to 10 mm.

[0073] H1 and H max The difference between may be, for example, 5 mm or less.

[0074] In principle, the door seal 8 can be divided into three sections:

[0075] a base section for fastening to a corresponding counterpart component, in particular for mechanical fastening and / or bonding;

[0076] A pressure segment, which can be loaded with compressed air to inflate the door seal 8;

[0077] A compensating section with at least one pressure-compensating opening 16 which can be compressed with little force and can compensate for possible lateral deviations of the two door leaves 7 .

[0078] It is possible to produce the compensation section, ie the second hose 11 forming the compensation section, from a softer material than the rest of the door seal 8. As a result, the transverse loads acting on the door leaf 7 can be further reduced due to the improved force-travel ratio.

[0079] The distance between the door seal 8 and the car wall 4 can be determined according to EN81-20, for example, as follows:

[0080] H0: 0 mm distance, ie the door seal 8 ends flush with the cage wall 4 and allows the door 6 to pass through without restriction.

[0081] H1: 3 mm spacing (this corresponds to the minimum permissible gap between the door 6 and the car wall 4);

[0082] H max : 6 mm spacing (this corresponds to the maximum permissible gap between the door 6 and the car wall 4).

[0083] The fluid pressure for activating the door seal 8 can be adjusted in such a way that the door seal 8 is extended to a height H max This ensures that the door seal 8 completely bridges the door gap 9 in every case. In addition, a certain holding pressure can be provided.

[0084] The pressure supply unit 15 and the control unit 21 (see Figure 1 ), for example, a door control unit of an elevator car 3, which control unit includes a processor 22, which is configured to execute the method described below for controlling the elevator device 1, more precisely for activating or deactivating the door seal 8, via a computer program stored in a memory of the control unit 21.

[0085] For this purpose, the control unit 21 generates a first control signal 23 in a first step when the control unit 21 recognizes that the door seal 8 should be activated, i.e. the door gap 9 should 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 such a way, in particular to increase it to such an extent that the fluid pressure reaches a first value at which the first hose 10 assumes its final shape. As a result, the door seal 8 rests with a contact section on the door leaf 7 and seals the door gap 9.

[0086] On the other hand, when the control unit 21 ascertains that the door seal 8 is deactivated again, i.e., the door gap 9 should be opened again (this may be the case, for example, during travel and before the elevator car 3 stops at a floor), the control unit generates a second control signal 24, causing the pressure supply unit 15 to change the fluid pressure in the first hose 10 in the following manner, in particular to reduce it to the following extent: so that the fluid pressure reaches a second value, at which the first hose 10 again assumes its initial shape, i.e., the door seal 8 again has its minimum height H0, so that the door seal 8 is separated from the door leaf 7 by a sufficient air gap in time before the door 6 opens.

[0087] The difference between the first value and the second value may be, for example, 0.5 bar to 1.5 bar.

[0088] In summary, it is pointed out that terms such as "having", "comprising" etc. do not exclude other components or steps, and the indefinite article "a" or "an" does not exclude a plurality. Furthermore, it may be pointed out that features or steps described with reference to one of the above embodiments may also be applied in combination with features or steps described with reference to other preceding embodiments. Reference signs in the claims should not be considered as limiting.

Claims

1. A 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) is separated from the car wall (4) by a door gap (9) to be sealed when it closes the door opening (5), wherein the door seal (8) comprises: A first hose (10) made of an elastically deformable sealing material; The first hose (10) has a pressure connector (14) for applying fluid pressure to the first hose (10), and the first hose can be deformed between an initial shape and a final shape that is enlarged in the bridging direction compared to the initial shape by changing the fluid pressure, 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 car wall (4) and / or the door (6) in such a way that, when the door (6) closes the door opening (5), the first hose (10) and the second hose (11) are located opposite each other in the door gap (9) in a bridging direction (13) along which the door seal (8) is intended to bridge the door gap (9) and extend at least partially around the door opening (5); The second hose (11) has at least one pressure compensation opening (16) which is designed to achieve pressure compensation between the interior of the second hose (11) and the external environment when the second hose (11) is compressed.

2. The 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 composite (12).

3. The door seal (8) according to claim 2, wherein: The hose assembly (12) can be mounted on the car wall (4) in such a way that the first hose (10) extends between the second hose (11) and the car wall (4); or The hose assembly (12) can be mounted on the door (6) in such a way that the first hose (10) extends between the second hose (11) and the door (6).

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

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

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

7. The door seal (8) according to claim 6, wherein The longitudinal direction (17) of the oval cross section extends obliquely or orthogonally to the bridging direction (13) in the assembled state of the door seal (8).

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

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

10. A method for controlling an elevator installation (1), wherein: The elevator installation (1) comprises an elevator shaft (2) and an elevator car (3) capable of traveling in the elevator shaft (2); The elevator car (3) comprises a car wall (4) with a door opening (5), a door (6) for closing the door opening (5), and a door seal (8) according to any of the preceding claims, wherein the door (6) is separated from the car wall (4) by a door gap (9) to be closed when it closes the door opening (5), and the door seal (8) is mounted on the car wall (4) and / or the door (6) in such a way that, when the door (6) closes the door opening (5), the first hose (10) and the second hose (11) are located opposite each other in the door gap (9) in a bridging direction (13) and extend at least partially around the door opening (5); The elevator device (1) further comprises a pressure supply unit (15) connected to the pressure connector (14) to provide fluid pressure; Wherein, the method comprises: When it is determined that the door seal (8) should be activated: a first control signal (23) is generated 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 a final shape, wherein the first hose (10) in the final shape is enlarged in the bridging direction (13) compared to the initial shape at least to such an extent that the door seal (8) bridges the door gap (9); When it is confirmed that the door seal (8) should be deactivated: a second control signal (24) is generated 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) assumes the initial shape again.

11. The method according to claim 10, wherein: The difference between the first value and the second value is 0.5 bar to 1.5 bar.

12. A control unit (21) comprising a processor (22) configured to perform the method according to claim 10 or 11.

13. An elevator device (1), comprising: Elevator shaft (2); An elevator car (3) movable in an elevator shaft (2), the elevator car comprising a car wall (4) with a door opening (5), a door (6) for closing the door opening (5), and a door seal (8) according to any one of claims 1 to 9, wherein the door (6) is separated from the car wall (4) by a door gap to be closed when it closes the door opening (5), and the door seal (8) is mounted on the car wall (4) and / or the door (6) in such a way that, when the door (6) closes the door opening (5), a first hose (10) and a second hose (11) are arranged opposite each other in the door gap (9) in a bridging direction (13) and extend at least partially around the door opening (5); A pressure supply unit (15) connected to the pressure connector (14) for providing fluid pressure; as well as A control unit (21) according to claim 12.

14. A computer program comprising instructions which, when executed by a processor (22), cause the processor (22) to perform the method according to claim 10 or 11.

15. A computer readable medium having stored thereon a computer program according to claim 14.

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