Elevator system comprising eccentric guide rail and eccentric drive unit, and use of eccentrically arranged drive unit for such elevator system

Abstract

The invention relates to an elevator system comprising at least one car and at least one drive unit, the at least one car being coupled to the drive unit by means of a traction device interacting with the drive unit in a drive region, the lift car is guided through a lift car guide rail which is eccentrically arranged in the horizontal direction / axis relative to the center line of the elevator shaft; wherein the driving area of the driving unit is eccentrically arranged relative to the center line of the elevator shaft, and the eccentricity of the lift car guide rail is opposite to the eccentricity of the driving area. Preferably, the eccentricity of the drive region is at least a predetermined / predeterminable multiple of the eccentricity of the car guide rail (s). Such a configuration also allows both the car guide rail (s) and the drive unit to be advantageously arranged, especially in the event of an emergency stop.

Description

Technical Field

[0001] The invention relates to an elevator installation comprising at least one car and at least one drive unit, wherein the at least one car is coupled to the drive unit via at least one traction device interacting with the drive unit in the drive region, wherein the at least one car is guided via car guide rails which are arranged eccentrically with respect to the center line of the elevator shaft or the corresponding car center line, respectively. The invention also relates to the use of at least one eccentrically arranged drive unit for such an elevator installation. In particular, the invention relates to an elevator installation according to the independent claim. Background Art

[0002] An elevator installation comprising at least one car arranged in an elevator shaft is advantageously designed so that the dimensions of the elevator shaft can be compact. Typically, a drive unit and a traction device coupling at least one car to the drive unit are arranged on one side of the respective car or the elevator shaft, in particular on the side where the counterweight is guided by the counterweight guide rails. At least one car is guided by car guide rails, wherein at least one car guide rail is arranged on the side of the elevator shaft where the drive unit is located. Therefore, it is necessary to advantageously arrange at least (a plurality of) car guide rails and the drive unit or traction device.

[0003] The following publications each describe an elevator system which exhibits an advantageous relative arrangement between guide rails and drive components: CN 111689 343A, US 2007 / 102245 A1. Summary of the invention

[0004] The object of the invention is to provide an elevator installation which allows a drive unit to be in an advantageous position, in particular with regard to advantageous safety features. In particular, the object of the invention is to provide an elevator installation which allows a traction device of a drive unit to be in an advantageous position.

[0005] The objects of the invention are solved by the features of the independent claim. Advantageous features are indicated in the dependent claims. The features of the dependent claims can be combined with the features of the independent claim as well as with the features of further dependent claims.

[0006] The object is therefore achieved in particular by an elevator installation having at least one car and at least one drive unit, wherein the at least one car is coupled to the drive unit by at least one traction device interacting with the drive unit in a drive region, wherein the at least one car is guided by at least one car guide rail (respectively by the car guide rail or by two car guide rails arranged on opposite sides of the car), wherein at least one car guide rail is arranged eccentrically with respect to a center line of the elevator shaft in a horizontal direction / axis line; wherein the drive region of the drive unit is arranged eccentrically (in a y-position in a top view according to the horizontal direction / axis line) with respect to a center line of the elevator shaft aligned in the x-direction (relative to a center line of the car aligned in the x-direction), wherein the eccentricity of the (multiple) car guide rails is opposite to the eccentricity of the drive region (in a y-position according to the horizontal direction / axis line), so that the drive region of the drive unit is at a certain horizontal distance (y-distance) relative to both the at least one car guide rail and the center line of the elevator shaft. According to the teaching of the invention, the eccentricity of the drive region depends on the predetermined / predeterminable eccentricity of the car guide rail(s), wherein the eccentricity of the drive region is at least a predetermined / predeterminable multiple of the eccentricity of the car guide rail(s). This configuration provides advantageous properties in particular in the case of emergency stop actions. This also allows an advantageous position of the traction device in the elevator shaft, in particular so that components in the elevator shaft do not need to take up too much space in the x-direction.

[0007] The present invention is based on the concept of an unbalanced (eccentric) arrangement of the car guide rails, and the present invention is also based on the teaching of eccentrically arranging the drive unit according to the eccentricity of the car guide rails. Compared with the prior art, the present invention teaches to arrange both the car guide rails and the drive unit eccentrically with respect to the car centerline, thereby ensuring an advantageous configuration in terms of restarting the system after a safety condition or an emergency stop.

[0008] It should be noted that elevator design is usually driven by the most comfortable ride characteristics in normal / standard operation. Therefore, typically the car guide rails are arranged in a symmetrical configuration (i.e., in a balanced manner, without any eccentricity). In contrast, the present invention focuses on advantageous characteristics in terms of system behavior in emergency stop situations.

[0009] In other words: the invention provides an arrangement of the traction means (e.g. at least one belt) on one side of the car guide rail(s) such that both requirements are met in an advantageous manner: the point of force application of the traction means is also advantageous in the case of a balanced car and a minimal space requirement in the x-direction. Preferably, all of the following components are arranged relative to one another (in the y-direction) such that an overlap is achieved in the x-direction: car guide rail(s), drive unit and drive region, counterweight guide rail. For example, the horizontal distance (y-distance) from the car guide rail(s) to the car center or the elevator shaft centerline is 80 mm; for example, the horizontal distance (y-distance) from the car guide rail(s) to the drive region is 180 mm (in particular for a belt drive with two belts) or 207 mm (in particular for a belt drive with three belts). This eccentric (unbalanced) arrangement also allows the following advantages: the eccentric arrangement of the guide rail(s) allows the use of thinner (more compact) support material, i.e. the support structure can be designed to be more cost-effective.

[0010] According to the present disclosure, the term "horizontal direction / axis" refers to one of the two horizontal directions, in particular to the direction in which the drive shaft of the drive unit is aligned; therefore, the "horizontal direction" generally refers to the spatial alignment (i.e. the coordinate axis) and relates to the two opposite directions of this spatial alignment; therefore, the term "direction / axis" is selected. In general, according to the present disclosure, the term "horizontal direction" refers to the y-direction shown in the accompanying drawings. Therefore, according to the present disclosure, the eccentricity of the (multiple) car guide rails and the center of the drive area is explained by exemplary reference to the y-coordinate axis (the so-called second horizontal direction / axis); a person skilled in the art knows that the technical teaching of the present invention can also be applied to, for example, the x-coordinate axis, in particular according to the individual arrangement of the guide rails in each elevator shaft.

[0011] According to the present disclosure, the term "x-distance" or "offset distance" refers to the lateral distance according to the centerline of the elevator shaft and is aligned according to the first horizontal direction (x-direction), especially arranged according to the alignment of the car guide rails relative to each other. According to the present disclosure, the term "eccentricity" refers to the horizontal direction or horizontal distance perpendicular to the centerline of the elevator shaft, that is, the second horizontal direction (y-direction) perpendicular to the first horizontal direction (x-direction). It should be noted that according to the present disclosure, it is assumed that the car is centrally aligned in the elevator shaft relative to the second horizontal direction (y-direction), that is, the car is centrally aligned relative to the space available to the car in the corresponding spatial direction (for example, the space between the elevator shaft wall on a certain floor of the building and the door of the station / stop); those skilled in the art know that the technical teaching of the present disclosure can also refer to the centerline of the car instead, that is, the situation where the car is not centrally aligned in the elevator shaft relative to the second horizontal direction (y-direction).

[0012] Preferably, the terms in this disclosure and claims refer to the center line of the elevator shaft (rather than the center line of the car) because the guide rails and the drive unit are preferably supported within the shaft; therefore, the technical teachings of the present invention also relate to shaft design, and the process of arranging and installing related components within the shaft and supporting them on the walls or ground of the shaft (i.e., within the shaft pit).

[0013] According to one embodiment, the eccentricity of the car guide rails is in the range of 50-150 mm, in particular in the range of 70-110 mm, and wherein the eccentricity of the drive region is at least 1.25 times the eccentricity of the car guide rails. Preferably, the eccentricity of the car guide rails is a predetermined amount, and the eccentricity of the drive region is determined according to said minimum multiple and the individual configuration of the traction device.

[0014] According to one embodiment, the eccentricity of the car guide rails and the eccentricity of the drive region are defined such that the horizontal distance (y-distance) of the center of the drive region relative to the hoistway centerline (or, respectively, the car centerline) is at least 1.25 times, preferably more than 1.25 times, the eccentricity of the car guide rails. This ensures a favorable relative arrangement between (multiple) car guide rails and the drive region, in particular relative to each other. This also allows for moderate eccentricity relative to the elevator hoistway centerline in both directions.

[0015] According to the invention, the drive unit comprises a belt drive, wherein at least one traction means is a belt, wherein the eccentricity of the drive region is defined as a function of the number of belts and is at least 1.25 times the eccentricity of the car guide rails for a belt drive comprising two belts and at least 1.55 times the eccentricity of the car guide rails for a belt drive comprising three belts.

[0016] According to one embodiment, the eccentricity of the drive region is at least 3% and / or at most 6% or 8% of the extension of the car in said horizontal direction and is opposite to the eccentricity of said car guide rails.

[0017] According to one embodiment, the drive unit interacts with two belts, wherein the eccentricity of the drive region is at least 6% and at most 8% of the extension of the car in said horizontal direction and is opposite to the eccentricity of the car guide rails.

[0018] According to one embodiment, the drive unit interacts with three belts, wherein the eccentricity of the drive region is at least 5% and / or at most 7% of the extension of the car in said horizontal direction and is opposite to the eccentricity of the car guide rails.

[0019] It should be noted that in the case of a configuration with three belts, the extension of the car can be greater than in the case of a configuration with two belts. In other words: increasing the load and / or increasing the number of belts may result in an increase in the extension of the car, for example by a factor of about 1.5. The present invention teaches to only slightly change the eccentricity when the number of belts or the extension of the car needs to be adjusted proportionally.

[0020] According to one embodiment, the eccentricity of the car guide rail(s) is at least 3% of the (entire) extension of the car in said horizontal direction (i.e. at least 6% of half the width of the car in said horizontal direction). This also facilitates a fairly central arrangement of the drive region and the drive unit.

[0021] According to one embodiment, the eccentricity of the car guide rail(s) is at most 6% of the (entire) extension of the car in said horizontal direction. This also facilitates a fairly central arrangement of the car guide rails, in particular making only two car guide rails (face to face) necessary.

[0022] Preferably, in one particular configuration, the eccentricity of the car guide rail(s) is about 5.5% of the (entire) extension of the car.

[0023] According to one embodiment, the eccentricity of the drive region is at least 3% relative to the (overall) extension of the car in horizontal direction and opposite to the eccentricity of the car guide rails (or at least 12% of half the width of the car in said horizontal direction).

[0024] According to one embodiment, the eccentricity of the drive region is at most 8% relative to the extension of the car in the horizontal direction and is opposite to the eccentricity of the car guide rails. This also facilitates a fairly central arrangement of the drive region of the drive unit.

[0025] Preferably, in a particular configuration, the eccentricity of the drive region is about 7% relative to the (overall) extension of the car, in particular for a belt drive comprising two belts.

[0026] Preferably, in another particular configuration, the eccentricity of the drive region is about 9% relative to the (overall) extension of the car, in particular for a belt drive comprising three belts.

[0027] According to one embodiment, the eccentricity of the (multiple) car guide rails is a predetermined amount, which is independent of any specific extension of the car in the corresponding horizontal direction. Therefore, the present invention also teaches to preset the eccentricity of the car guide rails and to define the eccentricity of the drive area based on this. It should be noted that the eccentricity of the (multiple) car guide rails can be a predetermined amount, which can be defined independently of any specific extension of the car in the corresponding horizontal direction. In other words: according to the teaching of the present invention, the eccentricity of the car guide rails can be defined by reference to the extension of the car, but, according to a preferred embodiment, the eccentricity of the car guide rails is preferably defined independently of the extension of the car. For example, such a predetermined amount can be defined according to the load capacity of the elevator equipment, or according to the maximum height of the elevator equipment, or according to the maximum speed of the car.

[0028] According to one embodiment, the eccentricity ratio between the eccentricity of the drive region and the eccentricity of the car guide rails (according to the horizontal direction / axis and, relative to the centerline of the elevator shaft) is at least 1.15 times. This also provides an advantageous compromise (trade-off) between the eccentric arrangement of the car guide rails and the eccentric arrangement of the drive region and the traction means. In other words: advantageously, the eccentricity of the drive region is not much greater than the eccentricity of the guide rails. Preferably, for a belt drive comprising two belts, the eccentricity ratio is at most 1.3 times. For a belt drive comprising three belts, the eccentricity ratio is at most 1.7 times.

[0029] It has been found that an arrangement with minimal eccentricity allows an advantageous configuration both in terms of safety (for example in the event of an emergency stop or system failure) and driving comfort in standard / normal operation.

[0030] It should be noted that the belts for the belt drive may have a width of about 30-35 mm. Adjacent belts may be arranged at a distance of, for example, about 50-60 mm. Thus, in this particular configuration, providing three belts instead of only two belts requires an additional axial length of about 25-30 mm.

[0031] According to one embodiment, the drive unit comprises a belt drive, wherein the at least one traction device is a belt.Such a traction device also facilitates a compact design of the drive components.

[0032] According to one embodiment, the drive region has at least two sections, in each of which a respective belt is coupled to a drive shaft of a drive unit (belt drive). This configuration also allows a scalable design, for example by providing more sections on the same drive shaft.

[0033] According to one embodiment, the at least one car is guided by two car guide rails located on opposite sides of the car, wherein the two car guide rails are arranged eccentrically with respect to the center line of the elevator shaft, wherein the two car guide rails are arranged with the same eccentricity. This configuration also allows symmetrical support and symmetrical transmission of forces on two opposite sides of the car. Advantageously, the drive unit is arranged only on one side of the car.

[0034] According to one embodiment, the elevator installation has guide rails for at least one counterweight, in particular two counterweight guide rails, which are arranged symmetrically with respect to the center of the drive region (i.e. at the same y-distance in the same horizontal direction). This also provides an advantageous symmetrical arrangement and support for the forces transmitted between the traction device and the at least one counterweight. In other words: not only the car guide rails and the drive unit, but also the counterweight guide rails are arranged eccentrically with respect to the center line (X1) of the elevator shaft.

[0035] According to one embodiment, the drive unit is arranged such that the drive region and / or at least one traction device is located in a horizontal direction of the elevator shaft centerline at a horizontal position (x-position) at least approximately the same as the x-position of the counterweight guide rail. This also allows an advantageous arrangement of the components involved, with the guide rail providing an advantageous support. In particular, the rear part of the traction device is arranged at said x-position. Advantageously, the drive shaft is arranged at the x-position between the counterweight guide rail and the respective car guide rail (with reference to the respective side of the car), in particular at least approximately in the middle, i.e. at half the x-distance.

[0036] According to one embodiment, the eccentricity of the car guide rails and the eccentricity of the drive area are defined such that the horizontal distance of the center of the drive area relative to the center line of the elevator shaft is at least 1.25 times the eccentricity of the car guide rails; and wherein the eccentricity of the (multiple) car guide rails is at least 3% and at most 6% relative to the extension of the car in the horizontal direction; and wherein the eccentricity of the drive area is at least 3% relative to the extension of the car in the horizontal direction and is opposite to the eccentricity of the car guide rails. This configuration provides considerable advantages in the above-mentioned aspects.

[0037] In particular, the above object is also solved by the use of a drive unit arranged eccentrically relative to the center line of the elevator shaft for driving at least one car of an elevator installation, wherein the elevator installation has a car guide rail, which is arranged eccentrically relative to the center line of the elevator shaft in the horizontal direction on one side of the center line of the elevator shaft, wherein the eccentricity of the car guide rail is used to define the eccentricity of the position of the center of the drive area of ​​the drive unit relative to the center line of the elevator shaft in the opposite direction on the other side of the center line of the elevator shaft, wherein the eccentricity of the drive area is at least 5% (for example, at most 10%) relative to the extension of the car (as a whole) in the horizontal direction, wherein the eccentricity of the drive area depends on the predetermined / predeterminable eccentricity of the (multiple) car guide rails, wherein the eccentricity of the drive area is at least a predetermined / predeterminable multiple of the eccentricity of the (multiple) car guide rails, wherein the drive unit comprises a belt drive, wherein the traction means is a belt, wherein the eccentricity of the drive area is defined according to the number of belts; in particular a use of the eccentric drive area device in an elevator installation according to the present disclosure. This also provides the advantages mentioned above. Preferably, the eccentricity of the car guide rails is at least 5% and at most 10% relative to the extension of the car in said horizontal direction, but opposite to the eccentricity of the drive region.

[0038] Abstract: The invention relates to an elevator installation having at least one car and at least one drive unit, wherein the at least one car is coupled to the drive unit by means of at least one traction device interacting with the drive unit in a drive region, wherein the at least one car is guided by at least one car guide rail, which is arranged eccentrically in the horizontal direction / axis relative to the center line of the elevator shaft or the corresponding car center line; wherein the drive region of the drive unit is arranged eccentrically relative to the center line of the elevator shaft, wherein the eccentricity of the car guide rail is opposite to the eccentricity of the drive region, so that the region is arranged at a certain horizontal distance (y-distance) relative to the car guide rail and the center line of the elevator shaft. Preferably, the eccentricity of the drive region is at least a predetermined / predeterminable multiple of the eccentricity of the car guide rail(s). Such a configuration also allows an advantageous arrangement of both the car guide rail(s) and the drive unit, in particular in the event of an emergency stop. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] These and other aspects of the invention will also be apparent from the embodiments described below and will be elucidated by reference to these embodiments. Individual features disclosed in the various embodiments may constitute aspects of the invention alone or in combination. Features of different embodiments may be transferred from one embodiment to another. In the drawings:

[0040] Figure 1 An elevator installation according to an exemplary embodiment is schematically shown in a top view. DETAILED DESCRIPTION

[0041] First, a general description of the reference numerals is given; individual references are made in conjunction with the accompanying drawings.

[0042] The invention provides an elevator installation 10 for driving at least one car 11 in an elevator shaft 1 by means of at least one drive unit 12, the drive unit 12 having a drive 13 (in particular a belt drive) actuating a drive shaft 14.1 to provide a drive region 14 interacting with a traction device 15 (in particular at least one belt, preferably at least two belts), wherein at least one car is guided by a car guide rail 16, and wherein at least one counterweight (not shown) is guided by a counterweight guide rail 17. The car 11 is arranged centrally in the elevator shaft 1, so that the elevator shaft center line X1 aligned in a first horizontal direction (x-direction) is similar to the car center line X11 extending in the same spatial direction (x), in particular with respect to the extension y11 of the car in said second horizontal direction y. The center of the drive region is defined by the drive region center (line) X14 (in particular the middle / center of the drive shaft axis Y14).

[0043] The present invention provides a preferred arrangement of both the car guide rails and the drive area, in particular with respect to the arrangement in a second horizontal direction (y) perpendicular to the first horizontal direction. It has been found that such an arrangement also allows an advantageous implementation of the support portion in terms of the support and fixation of the drive unit and the guide rails. In particular, the y-distance y1 between the respective car guide rail 16 and the drive area center X14 (in the second horizontal direction y) is in the range of 10 to 15% of the extension of the car in the same direction (y). In particular, the eccentricity y14 of the middle of the drive area 14 or the drive area center X14 (in the second horizontal direction y) is in the range of 6 to 8% of the extension of the car in the same direction (y). In particular, the eccentricity y16 of the respective car guide rail 16 (in the second horizontal direction y) is in the range of 4 to 6% of the extension of the car in the same direction (y). In particular, preferably, the eccentricity multiple (ratio) FY of the drive region eccentricity y14 relative to the car guide rail eccentricity y16 is between 1.15 and 1.3, i.e., the eccentricity multiple (ratio) FY is quite moderate, i.e., preferably, the drive region is not much further from the car centerline X11 than the car guide rails (multiples). In other words: preferably, the offset of the drive region in the y-direction is not much greater than the offset of the car guide rails in the opposite y-direction.

[0044] The x-distance x17 (offset distance) between the respective car guide rail 16 and the respective counterweight guide rail 17 is marked by reference numeral x17.

[0045] Figure 1An advantageous relative arrangement of the car guide rails with respect to the drive region in the second horizontal direction (y) and also with respect to the first horizontal direction (x) is shown. The eccentricities of the car guide rails and the drive region are almost identical but in opposite directions (spatially). Figure 1 It is also shown that the offset distance x between the car guide rails 16 and the drive shaft 14 . 1 (or drive shaft axis Y14 ) is relatively small. Figure 1 It is also shown that the offset distance x between the drive shaft 14 . 1 and the counterweight guide rail 17 is also relatively small.

[0046] exist Figure 1 , the drive unit 12 is indicated by a dotted line. It should be noted that the drive unit is located above the car guide rails, i.e. the (eccentric) position of the car guide rails does not directly affect / act on the relative position of the drive unit or the belt drive (this is because the car guide rails end below the drive unit). Therefore, a favorable eccentricity factor (ratio) can be found by referring to the center of the drive area.

[0047] Reference numerals list

[0048] 1 Elevator shaft

[0049] 10 Elevator equipment

[0050] 11 Car

[0051] 12 Drivers

[0052] 13 drives, especially belt drives

[0053] 14 Drive Area

[0054] 14.1 Drive shaft

[0055] 15 Traction means, in particular at least one belt, preferably at least two belts

[0056] 16 Guide rails for car

[0057] 17 Guide rails for counterweight

[0058] X1 elevator shaft centerline, aligned according to the first horizontal direction

[0059] X11 car center line

[0060] X14 drive area center (line)

[0061] x17 x-Distance between car guide rail and counterweight guide rail (offset distance)

[0062] y1 y- Distance between the car guide rail and the center of the drive area (in the second horizontal direction)

[0063] y11 Extension of the car in the second horizontal direction

[0064] y14 Eccentricity of driving area (in the second horizontal direction)

[0065] y16 Eccentricity of car guide rail (in the second horizontal direction)

[0066] Y14 drive shaft axis

[0067] FY drive area eccentricity: eccentricity multiple (ratio) of car guide rail eccentricity

[0068] x first horizontal direction

[0069] y A second horizontal direction perpendicular to the first horizontal direction.

Claims

1. An elevator installation (10) comprising at least one car (11) and at least one drive unit (12), wherein: The at least one car (11) is coupled to the drive unit (12) via at least one traction device (15) interacting with the drive unit (12) in a drive region (14); wherein the at least one car (11) is guided by at least one car guide rail (16), and the at least one car guide rail (16) is arranged eccentrically in the horizontal direction relative to the center line (X1) of the elevator shaft; wherein the drive region (14) of the drive unit is arranged eccentrically relative to the center line (X1) of the elevator shaft, wherein the eccentricity (y16) of the (plurality) car guide rail (16) is opposite to the eccentricity (y14) of the drive region (14), so that the The drive region (14) of the drive unit is at a certain horizontal distance relative to both the at least one car guide rail and the center line of the elevator shaft, wherein the eccentricity (y14) of the drive region (14) depends on the predetermined / predeterminable eccentricity (y16) of the (multiple) car guide rails (16), characterized in that the eccentricity (y14) of the drive region (14) is at least a predetermined / predeterminable multiple of the eccentricity (y16) of the (multiple) car guide rails (16), wherein the drive unit (12) includes a belt drive, wherein the traction device (15) is a belt, and wherein the eccentricity (y14) of the drive region is defined according to the number of the belts.

2. The elevator device according to claim 1, wherein: The eccentricity (y16) of the car guide rail is in the range of 50-150 mm, in particular in the range of 70-110 mm, and wherein the eccentricity (y14) of the drive region is at least 1.25 times the eccentricity of the car guide rail.

3. An elevator installation according to any of the preceding claims, wherein: The eccentricity (y14) of the drive area is defined as a function of the number of belts and is at least 1.25 times the eccentricity (y16) of the car guide rail for a belt drive comprising two belts and at least 1.55 times the eccentricity (y16) of the car guide rail for a belt drive comprising three belts.

4. An elevator installation according to any of the preceding claims, wherein: The eccentricity (y14) of the drive area is at least 3% and / or at most 6% or 8% of the extension of the car in the horizontal direction and is opposite to the eccentricity of the car guide rail; or wherein the drive unit interacts with two of the belts, wherein the eccentricity (y14) of the drive area is at least 6% and / or at most 8% of the extension of the car in the horizontal direction and is opposite to the eccentricity of the car guide rail; or wherein the drive unit interacts with three of the belts, wherein the eccentricity (y14) of the drive area is at least 5% and / or at most 7% of the extension of the car in the horizontal direction and is opposite to the eccentricity of the car guide rail.

5. An elevator installation according to any of the preceding claims, wherein: The at least one car is guided by two car guide rails arranged on opposite sides of the car, wherein the two car guide rails are arranged eccentrically relative to a centerline of the elevator shaft, wherein the two car guide rails are arranged with the same eccentricity.

6. An elevator installation according to any of the preceding claims, wherein: The elevator installation comprises at least one, in particular two, counterweight guide rails (17), which are arranged symmetrically with respect to a center (X14) of the drive region (14).

7. An elevator installation according to any of the preceding claims, wherein: The drive unit (12) is arranged so that the drive region (14) and / or at least one of the traction devices (15) are located at a horizontal position in the horizontal direction of the elevator shaft centerline at least approximately the same as the x-position of the counterweight guide rail (17).

8. Elevator installation according to any of the preceding claims, wherein: The eccentricity (y16) of the car guide rail and the eccentricity (y14) of the drive area are defined so that the horizontal distance of the center (X14) of the drive area relative to the center line of the elevator shaft is at least 1.25 times the eccentricity of the car guide rail; and wherein the eccentricity of the (multiple) car guide rails is at least 3% and at most 6% of the extension of the car in the horizontal direction; and wherein the eccentricity of the drive area is at least 3% of the extension of the car in the horizontal direction and is opposite to the eccentricity of the car guide rail.

9. Use of a drive unit (12) arranged eccentrically relative to a centerline (X1) of an elevator shaft for driving at least one car (11) of an elevator installation (10), wherein: The elevator device comprises a car guide rail (16), which is arranged eccentrically in the horizontal direction relative to the center line (X1) of the elevator shaft on one side of the center line of the elevator shaft, wherein the eccentricity of the car guide rail is used to define the eccentricity of the position of the center (X14) of the drive area (14) of the drive unit (12) relative to the center line of the elevator shaft in the opposite direction on the other side of the center line of the elevator shaft, wherein the eccentricity (y14) of the drive area is at least 5% of the extension of the car in the horizontal direction, wherein The eccentricity (y14) of the drive region depends on a predetermined / predeterminable eccentricity (y16) of (multiple) car guide rails (16), characterized in that the eccentricity of the drive region is at least a predetermined / predeterminable multiple of the eccentricity of the (multiple) car guide rails, wherein the drive unit (12) comprises a belt drive, wherein the traction device (15) is a belt, wherein the eccentricity (y14) of the drive region is defined according to the number of the belts; in particular, a use of the eccentric drive region device in an elevator device according to any of the preceding claims.

10. Use of a drive unit (12) arranged eccentrically relative to a centerline (X1) of an elevator shaft for driving at least one car (11) of an elevator installation (10), wherein: The elevator device comprises a car guide rail (16), which is arranged eccentrically in the horizontal direction relative to the center line (X1) of the elevator shaft on one side of the center line of the elevator shaft, wherein the eccentricity of the car guide rail is used to define the eccentricity of the position of the center (X14) of the drive area (14) of the drive unit (12) on the other side of the center line of the elevator shaft relative to the center line of the elevator shaft in the opposite direction, wherein the eccentricity (y14) of the drive area is at least 5% of the extension of the car in the horizontal direction, wherein the eccentricity (y14) of the drive area depends on (multiple) car A predetermined / predeterminable eccentricity (y16) of a guide rail (16), characterized in that the eccentricity of the drive region is at least a predetermined / predeterminable multiple of the eccentricity of the (multiple) car guide rails, wherein the drive unit (12) comprises a belt drive, wherein the traction device (15) is a belt, wherein the eccentricity (y14) of the drive region is defined as a function of the number of belts and, for the belt drive comprising two belts, is at least 1.25 times the eccentricity (y16) of the car guide rail; in particular, a use of the eccentric drive region device in an elevator device according to any of the preceding claims 1 to 8.

11. Use of a drive unit (12) arranged eccentrically relative to a centerline (X1) of an elevator shaft for driving at least one car (11) of an elevator installation (10), wherein: The elevator device comprises a car guide rail (16), which is arranged eccentrically in the horizontal direction relative to the center line (X1) of the elevator shaft on one side of the center line of the elevator shaft, wherein the eccentricity of the car guide rail is used to define the eccentricity of the position of the center (X14) of the drive area (14) of the drive unit (12) on the other side of the center line of the elevator shaft relative to the center line of the elevator shaft in the opposite direction, wherein the eccentricity (y14) of the drive area is at least 5% of the extension of the car in the horizontal direction, wherein the eccentricity (y14) of the drive area depends on (multiple) car A predetermined / predeterminable eccentricity (y16) of a guide rail (16), characterized in that the eccentricity of the drive region is at least a predetermined / predeterminable multiple of the eccentricity of the (multiple) car guide rails, wherein the drive unit (12) comprises a belt drive, wherein the traction device (15) is a belt, wherein the eccentricity (y14) of the drive region is defined as a function of the number of belts and, for the belt drive comprising three belts, is at least 1.55 times the eccentricity (y16) of the car guide rail; in particular, a use of the eccentric drive region device in an elevator device according to any of the preceding claims 1 to 8.

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