Housing for a drive device for driving a support means of an elevator system

Abstract

The following embodiments relate to a housing (11) for a drive device (6) for driving at least one support means (4) of an elevator system (1), comprising a first connection element (11.1) for receiving a motor (9), a second connection element (11.2) for receiving a brake (10), and at least two reinforcing struts (11.3) extending between the first and second connection elements (11.1,11.2) for surrounding a drive shaft (7), wherein each of the reinforcing struts (11.3) has a reinforcing strut element (12) formed separately from the first connection element (11.1) and / or the second connection element (11.2), and the reinforcing strut elements (12) are interlockingly connected to the first connection element (11.1) and / or the second connection element (11.2) in order to transmit a torque about the longitudinal direction (L) or each of the reinforcing struts is formed from two reinforcing strut stubs (16, 16.1, 16.2), each of which is formed on the first connection element (11.1) and the second connection element (11.2) and which are separate from each other, the reinforcing strut stubs (16, 16.1, 16.2) being interlockingly connected to each other in order to transmit a torque about the longitudinal direction (L).

Description

[0001] TD 41900 - 1 - September 2025

[0002] Housing for a drive device for driving a lifting element of an elevator system

[0003] Technical field

[0004] The following descriptions relate to a housing for a drive device for driving at least one load-bearing element of an elevator system, comprising a first connection element for receiving a motor of the drive device on the housing, a second connection element for receiving a brake of the drive device on the housing, and at least two stiffening struts extending longitudinally between the first connection element and the second connection element to surround a drive shaft of the drive device extending between the motor and the brake.

[0005] Furthermore, the following statements concern a drive device with such a housing as well as an elevator system with such a drive device.

[0006] Technical background

[0007] Elevator systems for transporting people and / or goods are an integral part of modern residential and commercial buildings. A typical elevator system comprises one or more elevator shafts, each containing one or more cars, which are attached to support structures and moved between landing positions by means of drives.

[0008] In such elevator systems, it is known that the load-bearing elements are designed, among other things, as ropes or belts. Furthermore, it is known that in a drive unit of the elevator system, belts bear against drive zones of a drive shaft, or ropes bear against a drive pulley arranged on the drive shaft, wherein the drive shaft is connected or connectable to a motor on one side and to a brake on the other. The drive unit then typically has a housing (TD 41900 - 2 - September 2025) which serves, on the one hand, to ensure the arrangement of the motor, the brake, and the drive shaft relative to each other, the bearing of the drive shaft, and the transmission of force and torque between the components, and, on the other hand, to fasten the components in the elevator shaft or its surroundings.

[0009] A disadvantage of known housings is their relatively complex geometry, making them relatively difficult to manufacture. Another disadvantage is the need to manufacture individual housing geometries for drive shafts of varying lengths, for example, when different numbers of drive zones are required.

[0010] Description - Technical Solution

[0011] Given this situation, the task at hand is to reduce the manufacturing effort for a previously described housing.

[0012] The present problem is solved by the features of the independent claims. Advantageous embodiments are specified in the dependent claims, the description, and the drawings. Where technically feasible, the teachings of the dependent claims can be combined arbitrarily with those of the main and dependent claims.

[0013] In particular, the problem is solved by a housing for a drive device for driving at least one lifting element of an elevator system, comprising a first connection element for receiving a motor of the drive device on the housing, a second connection element for receiving a brake of the drive device on the housing, and at least two stiffening struts extending longitudinally between the first connection element and the second connection element for surrounding a drive shaft of the drive device extending between the motor and the brake, wherein the stiffening struts each have a stiffening strut element formed separately from the first connection element and / or the second connection element, and wherein the stiffening strut elements are positively connected to the first connection element and / or the second connection element for transmitting a torque about the longitudinal direction.TD 41900 - 3 - September 2025.

[0014] The following sections explain advantageous aspects and subsequently describe preferred modified embodiments. Explanations, particularly regarding advantages and definitions of features, are essentially descriptive and preferred, but not limiting, examples. If an explanation is limiting, this will be explicitly stated.

[0015] Where ordinal numbers, for example "first," "second," etc., are used, for instance to designate a component, an element, a process step, or a process action, these ordinal numbers are solely for differentiation in the designation and do not indicate any dependencies or sequences. This means, in particular, that a device does not need to have a "first component" to have a "second component." A device can also have a "first component" and a "third component" without necessarily having a "second component." Multiple units with the same ordinal number are also possible, for example, multiple "first components."

[0016] According to the present understanding, an elevator system is designed, for example, with at least one vertical elevator shaft and at least one car, but can also have several parallel elevator shafts and / or several cars, in particular several cars in one elevator shaft. A car is held at a first side of a drive device by a load-bearing element and driven via the load-bearing element, the drive device transmitting the drive torque to the load-bearing element via the drive shaft. The load-bearing element is preferably connected at a second side of the drive device to a counterweight associated with the car. A drive device is arranged, for example, in a machine room above the elevator shaft(s) or preferably in an upper section of an elevator shaft, the so-called shaft head. The load-bearing element orThe load-bearing elements can be designed, for example, as belts, i.e., with a flat cross-section and a flat or contoured force transmission surface, or as ropes, and bear tensile loads in the direction of their longitudinal extension. Belt load-bearing elements are also referred to as suspension belts and comprise, for example, several steel cables arranged side by side, enclosed in a common rubber sheath. Multiple load-bearing elements can be provided, for example, to increase the load-bearing capacity (TD 41900 - 4 - September 2025) or redundantly in the elevator system. An elevator shaft is a continuous shaft that extends over several floors of a building and has a cross-section designed for the passage of the elevator car.

[0017] In a drive mechanism, a housing serves to attach the individual components to one another and to the elevator shaft, and to transmit power between the components and to the elevator shaft. Furthermore, the housing can serve to protect individual components, for example, by at least partially enclosing them. This protection then provides, for instance, at least partial protection against the ingress of objects or liquids into the drive zone(s). However, according to the present understanding, the housing does not necessarily form a complete enclosure or housing of the components, and in particular, not a complete enclosure or housing of all components.

[0018] A connecting element is, for example, designed as a flat and / or cubic body and has fastening devices such as bores or recesses and / or projections for attaching the motor or brake – the motor or brake is thus connected to the connecting element or, via the connecting element, to the drive device. Furthermore, each connecting element has, in particular, a through-hole for the drive shaft and, when the drive device is assembled, completely surrounds the drive shaft. Preferably, the second connecting element can also have a friction surface for interaction with a

[0019] brake element of the brake.

[0020] A stiffening strut is, for example, rod-shaped or designed as a flat body and arranged between the connecting elements in such a way that the load-bearing elements guided on the drive shaft pass over the stiffening struts without contact during operation of the elevator system. The connecting elements are dimensioned and designed accordingly so that the stiffening struts arranged on them lie outside the guide planes of the load-bearing element(s). If a stiffening strut has a stiffening strut element, the stiffening strut element forms at least part of the stiffening strut. The stiffening strut element can form the entire stiffening strut, but does not necessarily have to. If the stiffening struts are intended to surround the drive shaft, this is described in TD 41900 - 5 - September 2025.

[0021] The stiffening strut is arranged around the circumference of the drive shaft and radially spaced from it. It preferably has a torsionally stiff and / or flexurally stiff cross-section, in particular a torsionally stiff and / or flexurally stiff profile cross-section.

[0022] Insofar as components of the housing, the drive device or the elevator system are designed separately from one another, they are each manufactured as a single part, and insofar as a connection exists between two separate components, this connection was created after the individual components had been manufactured, for example by positive locking, by screwing, by joining or other types of connection.

[0023] Insofar as the housing components are positively connected to each other in a longitudinal direction to transmit torque, this positive connection allows torque transmission from one component to another without the positive connection disengaging or failing under the transmission of design torques. The housing is therefore torsionally rigid within relatively tight tolerances, or the housing components are torsionally rigidly connected to each other within these tolerances, with the positive connection preventing significant movement of the components relative to each other in the direction of the torque. This direction of torque is, in particular, the circumferential direction with respect to a cylindrical coordinate system defined by the drive shaft. The longitudinal direction is parallel to the axis of the drive shaft, and the torques to be transmitted are referenced to the drive shaft.For example, if the drive shaft is driven by the motor and set into rotation relative to the stationary housing, the motor is braced against the first connecting element. The supporting torque is then transferred, for example, from the first connecting element to the stiffening struts and the second connecting element, and dissipated at the second connecting element into a wall of the elevator shaft, if the housing—purely as an example—is connected to the elevator shaft at the second connecting element. Insofar as reference is made to a cylindrical coordinate system in relation to the drive device or the housing in the present disclosure, this coordinate system is or refers to a coordinate system defined by the drive shaft. TD 41900 - 6 - September 2025.

[0024] The previously described solution to the housing problem now incorporates the teaching that the housing is formed from several separate components, resulting in relatively simple geometries for the individual components, with the complex geometry of the housing only arising from the entirety of the components. In particular, the simple geometries of the individual components allow for particularly easy manufacturing, for example, as inexpensive castings or through simple and cost-effective machining of a semi-finished product. It is intended that the connecting elements and the stiffening struts are designed separately, so that the connecting elements can be designed as a standard component for a given type of motor or brake and can be combined with stiffening strut elements that vary in their geometry, especially in their length, to produce different housings for different drive shaft lengths.The positive-locking connection also provides sufficient rigidity to absorb the torques transmitted between the motor, brake, and drive shaft. Overall, the housing can therefore be manufactured advantageously with minimal effort and sufficient load-bearing capacity and variability.

[0025] Alternatively or additionally, the stiffening strut elements can be connected to the first and / or second connection elements by force-fit and / or material-fit in addition to the positive-locking connection. The stiffening strut elements are then fixed and held against each other in directions other than those in which the positive-locking connection acts. In particular, the positive-locking connection can be designed such that it is created, for example, by sliding the components together, whereby the positive fit does not act in at least the spatial direction of the sliding direction, and the sliding components are secured against each other by the additional force-fit or material-fit connection.Alternatively or additionally, force or material locking can also serve to transfer moments in addition to form locking, or increase the load-bearing capacity of the connection during moment transfer.

[0026] Alternatively or additionally, the stiffening strut elements can be formed from a semi-finished product, in particular a profile. The stiffening strut elements are then designed to be particularly simple, especially so simple that only minimal machining of the semi-finished product is required. In the simplest case (TD 41900 - 7 - September 2025), the semi-finished product is simply cut to length, and the positive fit is achieved through the geometry already present in the semi-finished product, for example, by providing corresponding recesses or projections on the connecting elements that match the geometry of the semi-finished product.

[0027] Alternatively or additionally, it can be provided that, for the positive-locking connection of a stiffening strut element to a connecting element, one stiffening strut element and one connecting element each have a recess, and the other stiffening strut element and connecting element each have a projection corresponding to the recess. In particular, the recess and the projection are designed such that they can be pushed together longitudinally or in a transverse direction where no torque is acting, in order to then engage with each other. The recess and the projections each create a simple and highly load-bearing positive-lock connection. Furthermore, the recess and the projections define the positioning of the stiffening strut elements on the connecting elements, thus ensuring that the assembly of the housing remains simple.

[0028] Alternatively or additionally, the stiffening strut elements can be arranged to radially overlap the first and / or second connection element in the longitudinal direction. "Outer" is understood to mean that the stiffening strut elements abut a side of the connection element facing away from the drive shaft, with a radially inner side facing the drive shaft and the motor or brake being mounted on an axially outer surface of the connection element. The connection elements then lie within a cross-section formed by the stiffening strut elements. The available space on the axial sides of the connection elements can then be advantageously used completely for mounting and securing the motor or brake.The radial extent of the connecting elements can be chosen to be relatively small in order to achieve a simple and, in particular, easy-to-manufacture geometry. Furthermore, the connection points are then particularly easy to access for creating an additional force-fit or positive-lock connection, for example, to insert a screw or a comparable fastener in the radial direction of the drive shaft in the area of ​​positive locking. TD 41900 - 8 - September 2025.

[0029] Alternatively or additionally, at least one stiffening strut element can be designed from several separate stiffening strut sections. The length of the stiffening strut element can then be variably adjusted by assembling a specific number of stiffening strut sections, whereby the stiffening strut sections can be manufactured as identical parts and thus advantageously with low manufacturing effort or in large quantities. Alternatively, several, but still only a few, different standard lengths of stiffening strut sections can be kept in stock to achieve the greatest possible variability in the length of the stiffening strut while maintaining relatively low manufacturing effort.

[0030] Alternatively or additionally, the stiffening strut sections can be positively connected to each other for the transmission of torque around the longitudinal direction, and in particular, also frictionally connected and / or materially connected. The positive connection can be designed in the same way as between the stiffening strut element and a connecting element, or differently. A frictional connection is also achieved, for example, by a screw connection, in particular a radially extending screw connection. As an alternative to a frictional connection, the stiffening strut sections are, for example, bonded together.

[0031] Alternatively or additionally, the first connection element and / or the second connection element may have at least one stiffening strut stub, wherein one of the stiffening strut elements is positively connected to the stiffening strut stub. The positive connection between the connection element and the stiffening strut element is then spaced from the main body of the connection element by the length of the stiffening strut stub and is thus particularly easy to establish for the positive connection and the additional connections. Furthermore, depending on the geometry of the stiffening strut and the connection elements, the positive connection between the stiffening strut element and the stiffening strut stub is displaced from a region of peak load at the transition between the main body of the connection elements and the stiffening struts when a torque is transmitted via the stiffening struts. TD 41900 - 9 - September 2025

[0032] The problem is further solved by a housing for a drive device for driving at least one lifting element of an elevator system, comprising a first connection element for receiving a motor of the drive device on the housing, a second connection element for receiving a brake of the drive device on the housing, and at least two stiffening struts extending longitudinally between the first connection element and the second connection element for surrounding a drive shaft of the drive device extending between the motor and the brake, wherein the stiffening struts are each formed from two stiffening strut stubs formed separately from each other on the first connection element and the second connection element, and wherein the stiffening strut stubs are each positively connected to each other in order to transmit a torque about the longitudinal direction.

[0033] The advantages described above regarding the solution to the problem, where the housing also includes stiffening strut elements, can also be achieved with this housing. In particular, the advantage is that the individual components of the housing have relatively simple geometries, and the complex geometry of the housing only results from the entirety of the components. Furthermore, the connecting elements can be manufactured and stocked with various standard lengths of stiffening strut stubs, whereby connecting elements with the same or different stiffening strut stub lengths can advantageously be combined to create a large number of different housing lengths even with just a few standard lengths. For example, three housing lengths can be created with two standard lengths, and six housing lengths with three standard lengths.The geometry of the connection elements remains relatively simple, allowing for low manufacturing effort. Thus, by producing a relatively small number of different and simple geometries, a housing with variable geometry is advantageously created with overall low manufacturing effort. Furthermore, the number of positive locking connections is kept low because the housing contains no components other than the connection elements, resulting in a particularly torsionally rigid housing that is also exceptionally easy to assemble. TD 41900 - 10 - September 2025.

[0034] Alternatively or additionally, the stiffening strut stubs can be connected to each other by frictional and / or material interlocking, in addition to the positive-locking connection. The stiffening strut stubs are then fixed and held against each other in directions other than those in which the positive-locking connection acts. In particular, the positive-locking connection can be designed such that it is created, for example, by sliding the stiffening strut stubs together, whereby the positive lock does not act in at least the spatial direction of the sliding direction, and the sliding stiffening strut stubs are secured to each other by the additional force-locking or material interlocking.Alternatively or additionally, force or material locking can also serve to transfer moments in addition to form locking, or increase the load-bearing capacity of the connection during moment transfer.

[0035] Alternatively or additionally, the housing can be designed with four stiffening struts arranged in a rectangular pattern. This creates a particularly torsionally rigid housing overall, in which the stiffening struts also run outside the guide planes of the support element(s). The positive locking of several of the stiffening strut stubs in combination can ensure torque transmission and the positioning of the connecting elements relative to each other, or the transmission and positioning can be achieved by each individual stiffening strut.

[0036] Alternatively or additionally, the first and second connection elements can each be designed as rectangular plates, with the four stiffening struts formed by stiffening strut stubs arranged in the corners of the rectangular plates. This results in a particularly simple geometry of the connection elements, in which, in particular, a flat transition between the main body and the stiffening strut stubs can be created on the outer surfaces, thus keeping the number of transition radii subject to stress concentrations low and creating a particularly torsionally rigid overall geometry.

[0037] Alternatively or additionally, the first connection element and / or the second connection element may be designed as castings. The advantages of the solutions described above are then particularly pronounced, because TD 41900 - 11 - September 2025

[0038] Simplifying the geometry of the connection elements significantly simplifies the casting process. Furthermore, standardizing the connection elements, which are identical for every housing regardless of its length, means that only a single casting tool needs to be manufactured and maintained for each connection element. Consequently, manufacturing the connection elements becomes considerably cheaper compared to conventional cast housings.

[0039] The problem is further solved by a drive device for driving at least one lifting element of an elevator system, comprising a housing according to one of the solutions to the problem described above, a motor mounted on the first connection element, a brake mounted on the second connection element, and a drive shaft extending between the motor and the brake for receiving and driving the at least one lifting element. In particular, the drive shaft has at least one drive zone extending between the motor and the brake, on which a lifting element designed as a belt is received, guided, and driven. The at least one drive zone is, for example, slightly convex. Alternatively, a drive pulley can be arranged on the drive shaft, which receives a lifting element designed as a rope. In particular, a drive zone or...Traction sheave arranged for each load-bearing element of the assigned elevator car.

[0040] The drive device achieves the advantages mentioned above regarding the solutions to the problem with the housings. In particular, the drive device is simple and inexpensive to manufacture and can be easily produced and assembled with drive shafts of varying lengths and a housing whose geometry is adapted accordingly.

[0041] The problem is further solved by an elevator system comprising at least one elevator shaft, at least one car movable along the elevator shaft, at least one support element for holding and driving the car, and at least one drive device according to the solution to the problem described above for driving the at least one support element. The elevator system achieves the advantages described above with regard to the housings and the drive device. In particular, the elevator system is simple and inexpensive to manufacture and assemble. TD 41900 - 12 - September 2025

[0042] Brief description of the drawings

[0043] A preferred technical solution is explained in more detail below with reference to the accompanying drawings and preferred embodiments. The term "figure" is abbreviated as "Fig." in the drawings.

[0044] The drawings show

[0045] Fig. 1 shows a schematic view of an elevator system according to one embodiment;

[0046] Fig. 2 shows a schematic sectional view of a drive device for an elevator system according to Fig. 1;

[0047] Fig. 3a shows a schematic sectional view of a housing in a drive device according to Fig. 2 in a first embodiment;

[0048] Fig. 3b shows a detailed view of a housing according to Fig. 3a in a first embodiment variant;

[0049] Fig. 3c shows a detailed view of a housing according to Fig. 3a in a second embodiment variant;

[0050] Fig. 3d shows a detailed view of a housing according to Fig. 3a in a third embodiment variant;

[0051] Fig. 4 shows a schematic sectional view of a housing in a drive device according to Fig. 2 in a second embodiment;

[0052] Fig. 5 shows a schematic sectional view of a housing in a drive device according to Fig. 2 in a third embodiment;

[0053] Fig. 6a shows a schematic sectional view of a housing in a drive device according to Fig. 2 in three embodiment variants of a third embodiment; and

[0054] Fig. 6b shows a perspective view of a detail of a housing according to Fig. 6a.

[0055] Detailed description of the drawings TD 41900 - 13 - September 2025

[0056] The described embodiments are merely examples that can be modified and / or supplemented in various ways within the scope of the claims. Each feature described for a particular embodiment can be used independently or in combination with other features in any other embodiment. Each feature described for an embodiment of a particular claim category can also be used accordingly in an embodiment of a different claim category.

[0057] Figure 1 shows an elevator system 1 with a vertical elevator shaft 2 and a car 3 that travels in the elevator shaft 2. The car 3 is suspended from a load-bearing element 4, for example, a belt or rope, which is guided over several deflection elements 5 and a drive shaft 7 of a drive device 6 (e.g., at a drive zone or a drive sheave). The drive device 6 is located in a machine room 2.1 above the elevator shaft 2 and is attached to the floor of the machine room 2.1 in a manner not shown in detail. A counterweight 8 is also suspended from the load-bearing element 4 and travels in the elevator shaft 2 in the opposite direction to the car 3.

[0058] Figure 2 shows a drive device 6 in detail in a cross-sectional view. The drive shaft 7 has a first end 7.1 by means of which the drive shaft 7 is connected to a motor 9 in a rotationally fixed manner or can be connected to a motor 9 in a rotationally fixed manner by means of a coupling (not shown). The motor 9 is preferably designed as an electric machine. The drive shaft 7 also has a second end 7.2 by means of which the drive shaft 7 is connected to a brake 10 in a torque-resistant manner. Between the motor 9 and the brake 10, several drive zones 7.3 are formed on the drive shaft 7, on which three support elements 4 of the car 3 (not shown in Figure 2), designed as belts, are received, held, and / or driven or braked. Alternatively, instead of the drive zones 7.3, drive pulleys for receiving support elements 4 designed as ropes could also be provided at the same location. In the embodiment according to Figure 2, three drive zones 7 are shown by way of example.3 for three parallel support elements 4 on the drive shaft 7, wherein the length of the drive shaft 7 in a longitudinal direction L is determined by the number of drive zones 7.3. The number of support elements 4 required and to be accommodated on the drive shaft 7 is determined, for example, by the approved TD 41900 - 14 - September 2025.

[0059] Maximum weight of the car 3 and the load-bearing capacity of a single lifting device 4 and / or required redundancies.

[0060] The drive device 6 further comprises a housing 11 with a first connection element 11.1 for receiving the motor 9, a second connection element 11.2 for receiving the brake 10, and at least two stiffening struts 11.3 extending in the longitudinal direction L between the first connection element 11.1 and the second connection element 11.2. The connection elements 11.1 and 11.2 are shown here as plates, but can also have any other shape and are preferably designed as castings. The stiffening struts 11.3 surround the drive shaft 7 and extend parallel to it. The longitudinal direction L corresponds to the axial extent of the drive shaft 7. The housing 11 serves to receive all other components of the drive device 6, namely the motor 9, the brake 10, and the drive shaft 7, and is connected to the floor of the machine compartment 2 in a manner not shown in detail.1 connected, for example by screwing the first connecting element 11.1, the second connecting element 11.2 and / or at least one stiffening strut 11.3 to the ground.

[0061] Figure 3a shows an embodiment of a housing 11 with four stiffening struts 11.3, two of which are visible in the view shown in Figure 3a. The stiffening struts 11.3 are formed from stiffening strut elements 12, each of which, in the embodiment shown in Figure 3a, forms an entire stiffening strut 11.3. The stiffening strut elements 12 abut the connecting elements 11.1, 11.2 in a radial direction R and overlap the connecting elements 11.1, 11.2 in the longitudinal direction L.

[0062] Figures 3b to 3c show various variants of the embodiment according to Figure 3a in detail. In Figure 3b, a recess 13 in the form of a truncated corner is formed on the plate-shaped connecting element 11.1, wherein the stiffening strut element 12 has, for example, a triangular profile or a triangular profile with lateral projections and rests radially on the outside of the connecting element 11.1 in the area of ​​the recess 13. The stiffening strut element 12 then forms a positive connection with the connecting element 11.1 at the recess 13 for transmitting a torque acting about the longitudinal direction L. In addition, a frictional connection is formed between the stiffening strut element 12 and the connecting element 11.1 at connection points, which are schematically indicated, for example, through holes 14 on the stiffening strut element 12 and blind holes 15 on the connecting element 11.1.1 is formed, for example, by screws to be arranged there, but not shown in detail. The stiffening strut element 12 and the connecting element 11.1 are held or secured to one another by the force-fit connection. Figure 3c shows a variant essentially corresponding to Figure 3b with an L-shaped cross-section of the stiffening strut element 12 and a correspondingly shaped recess 13 in the connecting element 11.1. Figure 3d shows a variant essentially corresponding to Figures 3b and 3c with a round cross-section of the stiffening strut element 12 and a correspondingly shaped recess 13 in the connecting element 11.1.

[0063] Figure 4 shows a further embodiment of the housing 11, in which the connecting elements 11.1, 11.2 have stiffening strut stubs 16 which, together with the stiffening strut elements 12, form the stiffening struts 11.3. Each of the stiffening strut stubs 16 has projections 17 which engage in recesses 13 of the stiffening strut elements 12 to form a positive fit. The stiffening strut elements 12 are each formed from two halves 12.1, 12.2, which are connected to each other by connecting screws 18 (shown only schematically) to establish and secure the positive fit between the projections 17 and the recesses 13.

[0064] Figure 5 shows another embodiment of the housing 11, in which the stiffening strut elements 12 again form the entire stiffening strut 11.3 and also have a projection 17 at each end for engagement in a respective recess 13 of the connecting elements 11.1, 11.2.

[0065] Figures 6a and 6b show a further embodiment of the housing 11, wherein the connecting elements 11.1, 11.2 each have stiffening strut stubs 16.1, 16.2. By way of example, first stiffening strut stubs 16.1 are provided in a first length and second stiffening strut stubs 16.2 in a second length, so that with two different geometries for connecting elements 11.1, 11.2, three possible lengths of the housing 11 are achieved, as shown in Figure 6a. The stiffening strut stubs 16.1, 16.2 together, without a further stiffening strut element 12, form the stiffening struts 11.3. The lower stiffening strut stubs 19.1 have projections 17 and recesses 13 for forming a positive connection for transmitting torques about the longitudinal direction L, and the upper stiffening strut stubs 19.2 have geometries for a further positive connection not intended for receiving a torque.The upper stiffening strut stubs 19.2 center the housing 11.

[0066] TD 41900 - 17 - September 2025

[0067] Reference symbol list

[0068] 1 elevator system

[0069] 2 elevator shafts

[0070] 2.1 Machine room above the elevator shaft

[0071] 3 elevator car

[0072] 4 Lifting devices

[0073] 5 Deflection devices

[0074] 6 Drive device

[0075] 7 Drive shaft of the drive device

[0076] 7.1 First end of the drive shaft

[0077] 7.2 Second end of the drive shaft

[0078] 7.3 Drive zone of the drive shaft

[0079] 8 Counterweight

[0080] 9 Motor of the drive device

[0081] 10 Brake of the drive device

[0082] 11 Housing of the drive device

[0083] 11.1 First connection element of the housing

[0084] 11.2 second connection element of the housing

[0085] 11.3 Housing stiffening strut

[0086] 12 stiffening strut element

[0087] 12.1 First half of the stiffening strut element

[0088] 12.2 second half of the stiffening strut element

[0089] 13 Exclusion

[0090] 14 Through hole

[0091] 15 blind hole

[0092] 16 stiffening strut stubs

[0093] 16.1 First stiffening strut stub

[0094] 16.2 second stiffening strut stub

[0095] 17 leap

[0096] 18 connecting screws

[0097] 19.1 lower stiffening strut stubs

[0098] 19.2 Upper stiffening strut stubs TD 41900 - 18 - September 2025

[0099] L Longitudinal direction

[0100] R radial direction

Claims

TD 41900 - 19 - September 2025 Claims 1. Housing (11) for a drive device (6) for driving at least one support element (4) of an elevator system (1), comprising a first connection element (11.1) for receiving a motor (9) of the drive device (6) on the housing (11); a second connection element (11.2) for receiving a brake (10) of the drive device (6) on the housing (11); and at least two stiffening struts (11.3) extending in a longitudinal direction (L) between the first connection element (11.1) and the second connection element (11.2) for surrounding a drive shaft (7) of the drive device (6) extending between the motor (9) and the brake (10); characterized in that the stiffening struts (11.3) each have a stiffening strut element (12) formed separately from the first connecting element (11.1) and / or the second connecting element (11.2), wherein the stiffening strut elements (12) are connected to the first connecting element (11.1) and / or the second connecting element (11.2) for transmitting a torque about the longitudinal direction (L) are each positively connected.

2. Housing (11) according to claim 1, wherein the stiffening strut elements (12) are connected to the first connecting element (11.1) and / or the second connecting element (11.2) in addition to the positive locking connection by means of force locking and / or material locking.

3. Housing (11) according to claim 1 or 2, wherein the stiffening strut elements (12) are formed from a semi-finished product, in particular from a profile.

4. Housing (11) according to one of the preceding claims, wherein, for the positive locking connection of a stiffening strut element (12) with a connecting element (11.1, 11.2), one stiffening strut element (12) and connecting element (11.1, 11.2) has a recess (13) and another stiffening strut element (12) and connecting element (11.1, 11.2) has a projection (17) corresponding to the recess (13). TD 41900 - 20 - September 2025 5. Housing (11) according to one of the preceding claims, wherein the stiffening strut elements (12) cover the first connecting element (11.1) and / or the second connecting element (11.2) radially outside in the longitudinal direction (L).

6. Housing (11) according to one of the preceding claims, wherein at least one stiffening strut element (12) is formed from several separate stiffening strut sections.

7. Housing (11) according to claim 6, wherein the stiffening strut sections are positively connected and, in particular, additionally force-fit and / or material-fit connected to each other for transmitting a torque about the longitudinal direction (L).

8. Housing (11) according to one of the preceding claims, wherein the first connecting element (11.1) and / or the second connecting element (11.2) have at least one stiffening strut stub (16), wherein one of the stiffening strut elements (12) is positively connected to the stiffening strut stub (16).

9. Housing (11) for a drive device (6) for driving at least one support element (4) of an elevator system (1), comprising a first connection element (11.1) for receiving a motor (9) of the drive device (6) on the housing (11); a second connection element (11.2) for receiving a brake (10) of the drive device (6) on the housing (11); and at least two stiffening struts (11.3) extending in a longitudinal direction (L) between the first connection element (11.1) and the second connection element (11.2) for surrounding a drive shaft (7) of the drive device (6) extending between the motor (9) and the brake (10); characterized in that the stiffening struts (11.3) are each formed from two stiffening strut stubs (16, 16.1, 16.2) formed on the first connecting element (11.1) and the second connecting element (11.2) and are separate from each other, wherein the stiffening strut stubs (16, 16.1, 16.2) are positively connected to each other for the transmission of a torque about the longitudinal direction (L). TD 41900 - 21 - September 2025 10. Housing (11) according to claim 9, wherein the stiffening strut stubs (16, 16.1, 16.2) are connected to each other by force-locking and / or material-locking in addition to the form-locking connection.

11. Housing (11) according to claim 9 or 10, comprising four stiffening struts (11.3) arranged in a rectangular arrangement.

12. Housing (11) according to claim 11, wherein the first connecting element (11.1) and the second connecting element (11.2) are each designed as a rectangular plate and wherein the four stiffening struts (11.3) are formed by stiffening strut stubs (16, 16.1, 16.2) arranged in the corners of the rectangular plates.

13. Housing (11) according to one of the preceding claims, wherein the first connecting element (11.1) and / or the second connecting element (11.2) is / are formed as castings.

14. Drive device (6) for driving at least one support element (4) of an elevator system (1), comprising a housing (11) according to one of the preceding claims; a motor (9) received on the first connection element (11.1); a brake (10) received on the second connection element (11.2); and a drive shaft (7) extending between the motor (9) and the brake (10) for receiving and driving the at least one support element (4).

15. Elevator system (1) comprising at least one elevator shaft (2); at least one car (3) movable along the elevator shaft (2); at least one support means (4) for holding and driving the car (3); and at least one drive device (6) according to claim 14 for driving the at least one support means (4).

Images