Sensor assembly, car and elevator device

Abstract

The invention relates to a sensor arrangement (10, 10.1, 10.2, 10.3) for fastening to a car (3.1, 3.2), to a car (3.1, 3.2) and to an elevator system (1). The sensor arrangement (10, 10.1, 10.2, 10.3) has: a first sensor (13.1) for reading the first position code strip (9); a second sensor (13.2) for reading the first position code strip (9); the first sensor (13.1) and the second sensor (13.2) are arranged one above the other on the housing (11) and are attached to a common attachment surface (12) for the same orientation of the first sensor (13.1) and the second sensor (13.2) relative to the housing (11), and the housing (11) has a fastening device (18) for fastening the housing (11) to the car (3.1, 3.2).

Description

Technical Field

[0001] The following exemplary embodiments relate to a sensor assembly for fastening to a car of an elevator system, a car for an elevator system, and an elevator system. Background Art

[0002] Elevator installations for vertical transportation of people and / or goods are an integral part of modern residential and commercial buildings. Common elevator installations include an elevator shaft or multiple elevator shafts, in which one or more cars are moved between parking positions by means of a drive device (such as a support device drive device or a linear drive device).

[0003] In such elevator installations, it is known that the absolute position of the respective car is detected by means of a position code tape installed in the elevator shaft along the movement path of the car and a sensor fixed to the car for reading the code tape. Detecting the absolute position is indispensable for controlling the elevator installation, in particular when multiple cars are moving in the same elevator shaft and there is therefore a fundamental risk of a collision. Depending on the design of the sensor, two sensors may be required to detect the absolute position, or, in order to avoid failure of the absolute position detection, two mutually redundant sensors may be provided on the car. However, the fixing of multiple sensors and, in particular, the orientation of the sensors relative to the code tape is relatively complex. Summary of the invention

[0004] Based on this situation, the object of the present application is to simplify the reliable detection of the absolute position in the aforementioned elevator installation.

[0005] The object is achieved by the features of the independent main claim. Advantageous embodiments are given in the dependent claims. The teachings of the dependent claims can be combined arbitrarily with the teachings of the independent claim and the dependent claims, as long as this is technically feasible.

[0006] Therefore, the object is achieved in particular by a sensor assembly for fixing to a car of an elevator system, the sensor assembly comprising: a first sensor for reading a first position code strip; a second sensor for reading the first position code strip; and a housing for accommodating the first sensor and the second sensor, wherein the first sensor and the second sensor are arranged one above the other on the housing and are affixed to a common affixment surface for their identical orientation relative to the housing, and the housing has a fixing device for fixing the housing to the car.

[0007] The advantageous aspects are explained below, and preferred improved embodiments are further described below. In particular, the advantages of the features and the explanations of the definitions are essentially descriptive and preferred, but not restrictive examples. If the explanation is restrictive, this will be explicitly mentioned.

[0008] If ordinal numbers ("first", "second", etc.) are used, for example, to identify components, elements, method steps or method operations, these ordinal numbers are only provided for differentiation in name and do not indicate a relationship or sequence. This means, in particular, that, for example, a device does not necessarily have to have a "first component" just because it has a "second component". Furthermore, a device can have a "first component" as well as a "third component", but does not necessarily have to have a "second component". It is also possible to provide multiple units with the same ordinal number, and, for example, there can be multiple "first components".

[0009] According to the present understanding, an elevator system is designed, for example, with at least one vertical and / or horizontal elevator shaft and at least one car, but can also have multiple elevator shafts and / or multiple cars, in particular multiple cars in one elevator shaft.

[0010] The car is held and driven, for example, by a support device, wherein the drive device transmits a drive torque to the support device via a drive shaft. Furthermore, the support device is preferably connected to a counterweight assigned to the car. The drive device is arranged in particular in a machine room above an elevator shaft or a plurality of elevator shafts or in the upper part of the elevator shaft (the so-called shaft head). The support device is in particular designed as a rope, a belt, a belt, a chain or the like and carries a tensile load in the direction of its longitudinal extension.

[0011] The car can optionally be held and driven by a linear drive. The linear drive in an elevator system consists, for example, of a primary part extending along the elevator shaft and a secondary part located on the car. The primary part is formed by coils arranged one behind the other in a line, each of which is equipped with an inverter and is energized when the car is in the area of ​​the respective coil in order to generate a magnetic field. The magnetic field generated in this way causes the car to be attracted or repelled by the magnetic field depending on its set travel path. The secondary part is formed by permanent magnets or electromagnets, which interact with the magnetic field of the coils.

[0012] The elevator shaft is a continuous shaft, which is located on multiple floors of a building and / or extends along multiple areas of a building, and has a cross-section configured for the passage of a car. The elevator shaft of the elevator device can extend in a vertical direction and / or a horizontal direction. In an embodiment, the elevator device has at least one partial section of the elevator shaft in which the elevator shaft extends vertically and at least one partial section of the elevator shaft in which the elevator shaft extends horizontally, and the car can enter the partial section extending horizontally from the partial section extending vertically.

[0013] The position code tape extends along the elevator shaft in a strip shape and has a plurality of position marks, and the sensor can identify the position of the car according to the position mark. That is, the position mark corresponds to the position of the position code tape one by one. The position code tape can be, for example, a metal tape or a plastic tape, but it can also be formed by printing the position mark on any fixed part of the elevator equipment that extends along the elevator shaft. The position mark can be, for example, an optical mark (such as a barcode or a QR (Quick Response) code), but the position mark can also be a mark that can be read magnetically, acoustically or in other ways. The optical mark can also be formed, for example, by a hole or perforation of the position code tape, and the position code tape has a determined hole pattern or perforation pattern that changes in the length extension direction. The sensor for reading the position code tape is correspondingly configured as an optical sensor, a magnetic sensor, an acoustic sensor or a sensor corresponding to the position mark work of other forms, and is positioned relative to the position code tape so that the sensor can detect the position mark and can reliably read the position mark in order to determine the absolute position in the elevator shaft.

[0014] The housing is configured to surround the sensor on at least one side, that is, in the simplest case, the housing is formed by a plate. The housing thus provides at least the function of a common fitting surface for the sensor. Specifically, the housing also provides a protective function for the sensor and surrounds the sensor on more than one side for this purpose. The housing in particular at least partially encloses the sensor. Here, the common fitting surface is defined by the plane in which the fitting surface extends, and the fitting surface can also be configured to be multi-part or discontinuous. If the sensors are arranged on the housing one above the other, the height direction used as a reference corresponds to the extension direction of the position code tape in the elevator shaft. The sensor then reads the parts of the position code tape that are stacked one above the other at the same time.

[0015] In the simplest case, the fastening device is formed by a recess for receiving fastening means, such as screws, bolts or clips, and is arranged in such a way that the sensor is positioned opposite the position coding tape when the housing is fastened to the car.

[0016] The solution of the sensor assembly described above now includes such a teaching that the sensors are arranged on a common housing and are positioned in the same manner relative to the housing. In this way, the fixing of the sensors on the housing can be carried out in the factory, at which time, in particular, the same orientation has been achieved by a common fitting surface. Here, the sensors are positioned one above the other so that the two sensors are positioned identically relative to the first position code band when the sensor assembly is fixed on the car in the elevator system and only differ from each other in their height position relative to the first position code band. In this regard, during assembly, only the housing can be positioned relative to the car or in the elevator system so as to achieve reliable positioning of the two sensors relative to the first position code band at the same time. Advantageously, when assembling the elevator system, the assembly of the sensors, in particular the corresponding positioning, is greatly simplified and merged into one working step. The different height positions of the sensors can be taken into account without any problems in the control. In addition, with the sensor assembly, the two sensors can read the same position code band and do not need to set another position code band in the elevator shaft in addition to the first position code band in order to operate the two sensors. Furthermore, the above-mentioned teaching within the meaning of the present disclosure can also be extended to more than two sensors which are arranged one above the other on the housing and which, for their identical orientation relative to the housing, are placed on a common contact surface.

[0017] In the embodiment, the two sensors are each a single-channel sensor, in which case the sensors together form two channels of the measurement signal, thereby jointly enabling reliable position detection. However, unless otherwise stated, the disclosure is always based on a dual-channel sensor, which alone is already able to provide a reliable signal.

[0018] In an optional embodiment, the sensors are respectively assigned to different control devices or different control loops. For example, the sensors can be constructed or arranged differently to correspond to the corresponding control protocols of different control loops.

[0019] As a feature of the aforementioned alternative or in a preferred embodiment of the aforementioned alternative, it is provided that the first sensor and the second sensor are redundant with respect to one another. Since the sensors are redundant with respect to one another, the two sensors are read in the same way by the control device of the car or the elevator system (in particular the safety control device) and are used as regulating parameters or control parameters for the same regulating loop. If one of the sensors fails or is no longer able to determine the absolute position, the absolute position continues to be determined by the other sensor, so that the absolute position is determined at all times.

[0020] As a feature of the aforementioned alternative or in a preferred embodiment of the aforementioned solution, the fixing device is arranged on the side of the housing facing away from the sensor. On the one hand, the structural space available on the housing is advantageously allocated in this way. On the other hand, the sensor can now be fixed to the car in a transversely protruding or cantilevered manner, so that the sensor is relatively close to the first position code strip, while the car advantageously maintains a large safety distance from the first position code strip.

[0021] As a feature of the aforementioned alternative or in a preferred embodiment of the aforementioned solution, the housing is designed to be orientable relative to the car in at least one direction or around at least one rotation axis by means of a fixing device. Due to the orientation of the sensors relative to the housing by means of a common contact surface, in addition to simple positioning, the two sensors can be precisely oriented relative to the first position code tape simultaneously and in one working step. In particular, at the installation site of the elevator system, this precise orientation can ensure that the actual position relationship between the first position code tape and the car (or the housing fixed to the car) is responded to.

[0022] In an advantageous embodiment of the solution described directly above, it is provided that the housing is designed to be tiltable by means of a fastening device about a rotation axis extending parallel to the transverse direction of the code-carrying surface of the first position code strip. In this case, it can be provided in a simple manner that two sensors arranged one above the other have the same distance from the first position code strip or each have a suitable distance therefrom.

[0023] As a feature of the directly preceding alternative or in a preferred embodiment of the directly preceding alternative, it is provided that the fixing device for achieving the orientation of the housing is designed with at least one slot for receiving a fixing means. In this case, the slot corresponds in particular to an opening fixedly positioned on the car for receiving the fixing means, the slot being used, for example, alone to achieve a translational movement of the housing or in cooperation with a circular hole on the fixing device for receiving a further fixing means to achieve a rotational movement of the housing, the axis of rotation of the rotational movement being coaxial with the circular hole. In this way, adjustability can be achieved in a simple manner that is easy to operate in the installed state.

[0024] As a feature of the aforementioned optional solution or in the preferred embodiment of the aforementioned solution, the shell has at least one through hole on the fitting surface for contacting the sensor from the side facing away from the sensor. As a result, for example, the sensor (such as a status LED or a display) can be visually inspected or maintained from the back of the shell. Specifically, when the sensor assembly protrudes from the car on the top side, it can be inspected or maintained from the top of the car, and the personnel who carry out the inspection or maintenance do not have to lean out of the top of the car. Similarly, when the sensor assembly protrudes from the car on the bottom side, the personnel who carry out the maintenance do not have to lean out from the area of ​​the car. In addition, the accessibility of the sensor is not limited by the elevator shaft or the first position code band located in front of the sensor. At this time, the sensor is preferably arranged so that the maintenance-related components on the sensor are arranged in the area of ​​the through hole facing the fitting surface.

[0025] In a preferred embodiment of the solution described directly above, it is provided that at least one connecting wire of at least one sensor is passed through at least one through-hole. As a result, the connection of the connecting wire is carried out on the back side of the sensor facing away from the contact surface of the measuring device, thereby avoiding interference with the measurement due to the connecting wire. In addition, for sensor components that protrude from the car on the top side, the connecting wire thus advantageously provides a connection point on the car side.

[0026] As a feature of the aforementioned alternative or in a preferred embodiment of the aforementioned solution, the housing covers the sensor on at least one further side in addition to the contact surface. In this way, the sensor is reliably protected against unintentional displacement or damage by personnel on top of the car, for example during maintenance, and against the ingress of dust and / or liquids. Failure of the sensor is thereby avoided as much as possible. Furthermore, in addition to the common contact surface, a further contact surface for orienting the corresponding sensor relative to the housing can be provided at the covering on the further side.

[0027] In a preferred embodiment of the solution described directly above, it is provided that the housing covers the sensor on the upper side to protect the sensor and in particular protrudes beyond the sensor. The upper cover specifically constitutes a protection measure against dust, objects and / or liquids falling in the elevator shaft, thereby protecting the sensor from contamination and damage due to objects or substances.

[0028] As a feature of the directly preceding alternative or in a preferred embodiment of the directly preceding alternative, it is provided that the sensor is an optical sensor for reading a first position code strip arranged in a fixed position in the elevator shaft of the elevator system. Compared with the prior art, this optical sensor, which is positioned relative to the first position code strip, is used to achieve reliable position recognition, and the simplification of the positioning of the sensor on the car is particularly advantageous, since the individual positioning of each sensor is particularly complex. An optical sensor with the previously described features regarding the directional adjustability of the housing on the car allows particularly reliable recognition of the absolute position.

[0029] As a feature of the alternative described directly above, the sensor is a magnetic sensor for reading a first position code tape held in the elevator shaft and guided on the sensor. That is, if the sensor tape is guided by corresponding guide structures of the sensor, an exact alignment of the guide structures relative to one another is achieved in a simple manner by the orientation of the sensor on the contact surface of the housing. In addition, for a smooth and continuous, damage-free travel of the sensor on the first position code tape or the first position code tape on the sensor, the exact positionability of the sensor is also important, and in particular the orientation adjustability is also relevant, so that in this context the advantages of the teaching described above are also largely achieved.

[0030] The object is further achieved by a car for an elevator installation, which has a sensor assembly according to the above description. With such a car, the advantages described above for the sensor assembly can be achieved in a corresponding manner. Thus, in such a car, the positioning of the sensor relative to the first position code strip is significantly simplified.

[0031] The object is further achieved by an elevator installation having at least one elevator shaft, at least one first position code strip extending along the elevator shaft, and at least one car as described above, which is movable along the elevator shaft, wherein the sensor assembly is used to be positioned on the car by the sensor reading the first position code strip. With such an elevator installation, the advantages described above for the sensor assembly or for the car can be achieved in a corresponding manner. In such a car, the positioning of the sensor relative to the first position code strip is particularly simplified.

[0032] In an advantageous embodiment of the solution described directly above, it is provided that the elevator installation has at least two cars that can be moved in the same elevator shaft. Since the detection of the absolute position is particularly important when there are multiple cars in the same elevator shaft, in particular in order to reliably avoid collisions between the cars, it is particularly advantageous to simplify the detection of the absolute position. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The preferred technical solution is explained in detail below according to preferred exemplary embodiments with reference to the accompanying drawings. The expression "the accompanying drawings" is abbreviated as "Figure" in the drawings.

[0034] In the attached picture:

[0035] Figure 1 A very schematic illustration of an elevator installation according to an embodiment is shown;

[0036] Figure 2a shows a perspective view of a sensor assembly according to a first embodiment;

[0037] Figure 2b Shown according to Figure 2a Another perspective view of the sensor assembly;

[0038] Figure 2c Shown according to Figure 2a and Figure 2b A detailed view of a fixing device for a sensor assembly;

[0039] Figure 3a shows a perspective view of a sensor assembly according to a second embodiment;

[0040] Figure 3b Shown according to Figure 3a Another perspective view of the sensor assembly;

[0041] Figure 3c Shown according to Figure 3a and Figure 3b A detailed view of a fixing device for a sensor assembly;

[0042] Figure 4a shows a perspective view of a sensor assembly according to a third embodiment; and

[0043] Figure 4b Shown according to Figure 4a Another perspective view of the sensor assembly. DETAILED DESCRIPTION

[0044] The described embodiments are merely examples, which may be modified and / or supplemented in various ways within the scope of the claims. Each feature described for a certain embodiment may be used alone or in combination with other features in any other embodiment. Each feature described for an example embodiment of a particular claim category may also be used in an example embodiment of another claim category in a corresponding manner.

[0045] Figure 1An elevator installation 1 is shown, which has an elevator shaft 2 and a first cage 3.1 movable in the elevator shaft 2 in a vertical direction V and a second cage 3.2 movable in the elevator shaft 2 in a vertical direction V. The elevator shaft 2 has a shaft pit 2.1 and a shaft ceiling 2.2 and extends below a machine room 4. The cages 3.1, 3.2 are guided in guide rails (not shown in detail) in the elevator shaft 2 and are held on support means 5.1, 5.2, which are each guided via a deflection device 6 and a drive 7.1, 7.2 and are further connected to a counterweight 8.1, 8.2.

[0046] In addition, the first position code band 9 is arranged along the moving path of the cars 3.1 and 3.2 in the elevator shaft 2, and the first position code band 9 has a position mark 9.1 which is only schematically shown in the figure on the side facing the cars 3.1 and 3.2 over its entire extension length, and the position mark 9.1 is respectively configured as a QR code. The position marks 9.1 are different from each other and can be uniquely identified, so that the position in the elevator shaft 2 can be identified according to the corresponding position mark 9.1. In addition, the sensor assembly 10 described in detail below is fixed on the cars 3.1 and 3.2, and the sensor assembly 10 is only exemplarily shown on the lower side of the first car 3.1 and the car top of the second car 3.2. By reading the corresponding position mark 9.1 and its unique identification, the corresponding sensor of the sensor assembly 10 identifies the absolute position of the position mark 9.1 in the elevator shaft 2 and thereby identifies the absolute position of the cars 3.1 and 3.2 in the elevator shaft 2.

[0047] Figure 2a and Figure 2b A sensor assembly 10.1 according to a first embodiment is shown. The sensor assembly 10.1 comprises a housing 11, which has a base plate 11.1 as well as side walls 11.2 and an upper cover 11.3. The base plate 11.1 forms a contact surface 12 for a first sensor 13.1 and a second sensor 13.2, whereby the sensors 13.1, 13.2 are oriented relative to the housing 11. The sensors 13.1, 13.2 are also contacted to the side walls 11.2 and are connected to the base plate 11.1 via fixing means 14. The sensors 13.1, 13.2 are each configured as an optical sensor in the sensor assembly 10.1. On the side of the sensors 13.1, 13.2 facing away from the base plate 11.1 or the contact surface 12, the sensors 13.1, 13.2 have an optical measuring device 15. On the side of the sensors 13.1, 13.2 facing the base plate 11.1 or the contact surface 12, the sensors 13.1, 13.2 have components related to inspection and maintenance (not shown in detail), for which the base plate 11.1 has a plurality of through holes 16. In addition, the connecting wires 17.1, 17.2 of the sensors 13.1, 13.2 are passed through the through holes 16.

[0048] Furthermore, the sensor assembly 10.1 or the housing 11 has a fixing device 18, which is designed as a U-shaped profile with a base 18.1 and two side edges 18.2. The fixing device 18 is connected to the side wall 11.2 via a fixing device 20 designed as a screw and also has an elongated hole 21 for accommodating a fixing device 22 designed as a screw, which is used to fix the sensor assembly 10.1 to the car 3.1, 3.2. For example, the fixing to the car 3.1, 3.2 is achieved by a C-shaped clamp 19 on the clamping rail of the car 3.1, 3.2, which is not shown in detail here. The sensor assembly 10.1 can be fixed to the car 3.1, 3.2 in different positions along the first direction R.1 via the elongated hole 21 in order to adjust the distance between the sensor 13.1, 13.2 and the first position code band 9.

[0049] Figure 2c The side view of the fixing device 18 is shown in detail and the fixing device 20 is not shown. It can be seen that the fixing device 20 (see Figure 2a ) is accommodated in the elongated hole 23 on the side 18.2 on the one hand and in the circular hole 24 on the side 18.2 on the other hand, so that the sensor assembly 10.1 can be tilted about the rotation axis DA defined by the circular hole 24. More specifically, the housing 11 or its side wall 11.2 can be fixed to the fixing device 18 in an inclined manner in order to finely orient the sensors 13.1, 13.2 relative to the first position code strip 9.

[0050] Figure 3a and Figure 3b A sensor assembly 10.2 according to another embodiment is shown, many features of the sensor assembly 10.2 are the same as the sensor assembly 10.1 and will not be described again. Unlike the sensor assembly 10.1, the sensors 13.1, 13.2 in the sensor assembly 10.2 are configured as in Figure 3c 1 and 10.2, and the sensors 10.2 each have a guide structure 25, in which the first position code strip 9, which is designed as a magnetic strip, is accommodated and guided. Due to the arrangement of the sensors 13.1, 13.2 one above the other and their orientation on the common contact surface 12, the corresponding guide structures 25 are aligned with each other.

[0051] As a further difference to the sensor assembly 10.1, the fixing device 18 is not movable relative to the housing 11, but is formed integrally with the housing 11. By guiding the first position code strip 9 on the guide structure 25 of the magnetic sensors 13.1, 13.2, a vertical orientation of the sensors 13.1, 13.2 relative to the first position code strip 9 is absolutely necessary, so that adjustability of the tilt angle is not necessary.

[0052] Figure 4a and Figure 4b A sensor assembly 10.3 according to another embodiment is shown, and many features of the sensor assembly 10.3 are the same as those of the sensor assemblies 10.1 and 10.2 and are not described again. Here, in the sensor assembly 10.3, the sensors 13.1 and 13.2 are configured as magnetic sensors and a guide structure 26 fixedly positioned relative to the sensors 13.1 and 13.2 is configured on the sensor assembly 10.3, the guide structure 26 is formed by three guide elements 26.1, 26.2, 26.3, and a first position code strip 9 configured as a magnetic strip is accommodated and guided in the guide structure 26.

[0053] The two sensors 13 . 1 , 13 . 2 are designed as different magnetic sensors and in particular output sensor signals having different data formats, which can be used for different control circuits and / or in a common control circuit.

[0054] Reference numerals list

[0055] 1 Elevator equipment

[0056] 2 Elevator shaft

[0057] 2.1 Elevator shaft pit

[0058] 2.2 Top of the elevator shaft

[0059] 3.1 First car

[0060] 3.2 Second Car

[0061] 4. Computer Room

[0062] 5.1 The first supporting device

[0063] 5.2 Second support device

[0064] 6 Steering rollers

[0065] 7.1 First drive unit

[0066] 7.2 Second drive unit

[0067] 8.1 First counterweight

[0068] 8.2 Second counterweight

[0069] 9 First position code band

[0070] 9.1 Position mark of the first position code band

[0071] 10 Sensor components

[0072] 10.1 Sensor Components

[0073] 10.2 Sensor Components

[0074] 10.3 Sensor components

[0075] 11 Housing of sensor assembly

[0076] 11.1 Bottom plate of the housing

[0077] 11.2 Side walls of the housing

[0078] 11.3 Housing cover

[0079] 12 Fitting surface

[0080] 13.1 First Sensor

[0081] 13.2 Second Sensor

[0082] 14 Fixing device

[0083] 15 Optical measuring device

[0084] 16 Through holes in base plate or mating surface

[0085] 17.1 First connecting wire

[0086] 17.2 Second connecting wire

[0087] 18 Fixtures

[0088] 18.1 Bottom edge of fixing device

[0089] 18.2 Sides of the fixing device

[0090] 19 C-clip

[0091] 20 Fixing device

[0092] 21 Long hole

[0093] 22 Fixing device

[0094] 23 Long hole

[0095] 24 Round Hole

[0096] 25 Guide structure

[0097] 26 Guide structure

[0098] 26.1 Guide elements

[0099] 26.2 Guide elements

[0100] 26.3 Guide elements

[0101] DA Rotary Axis

[0102] R.1 First Direction

[0103] V vertical direction

Claims

1. A sensor assembly for attachment to a car (3.1, 3.2) of an elevator installation (1), said sensor assembly (10, 10.1, 10.2, 10.3) having: A first sensor (13.1) for reading a first position code strip (9); A second sensor (13.2) for reading said first position code strip (9); and A housing (11) for receiving said first sensor (13.1) and said second sensor (13.2), wherein, Said first sensor (13.1) and said second sensor (13.2) are arranged one above the other on said housing (11) and are attached to a common attachment surface (12) for the same orientation of said first sensor (13.1) and said second sensor (13.2) relative to said housing (11), and wherein said housing (11) has fixing means (18) for fixing said housing (11) to said car (3.1, 3.2).

2. The sensor assembly (10, 10.1, 10.2, 10.3) according to claim 1, wherein, Said first sensor (13.1) and said second sensor (13.2) are redundant with each other.

3. The sensor assembly (10, 10.1, 10.2, 10.3) according to claim 1, wherein, Said fixing means (18) are arranged on a side of said housing (11) facing away from said sensors (13.1, 13.2).

4. The sensor assembly (10, 10.1, 10.2) according to claim 1, wherein, Said housing (11) is configured to be orientable relative to said car (3.1, 3.2) in at least one direction (R.1) or about at least one axis of rotation (DA).

5. The sensor assembly (10, 10.1, 10.2, 10.3) according to claim 4, wherein, Said housing (11) is configured to be tiltable about an axis of rotation (DA) extending in a transverse direction parallel to the code-carrying surface of said first position code strip (9) by means of said fixing means (18).

6. The sensor assembly (10, 10.1, 10.2, 10.3) according to claim 4, wherein, Said fixing means (18) for effecting the orientation of said housing (11) are configured to have at least one oblong hole (21, 23) for receiving fixing devices (20, 22).

7. The sensor assembly (10, 10.1, 10.2, 10.3) according to claim 1, wherein, Said housing (11) has at least one through-hole (16) in the attachment surface (12) for accessing said sensors (13.1, 13.2) from a side facing away from said sensors (13.1, 13.2).

8. The sensor assembly (10, 10.1, 10.2, 10.3) according to claim 7, wherein, At least one connection wire (17.1, 17.2) of at least one sensor (13.1, 13.2) passes through said at least one through-hole (16).

9. The sensor assembly (10, 10.1, 10.2, 10.3) according to claim 1, wherein, the housing (11) covers the sensors (13.1, 13.2) on at least one additional side in addition to the mating surface (12) of the housing (11).

10. The sensor assembly (10, 10.1, 10.2, 10.3) according to claim 9, wherein, the housing (11) covers the sensors (13.1, 13.2) on the upper side to protect the sensors (13.1, 13.2).

11. The sensor assembly (10, 10.1, 10.2, 10.3) according to claim 1, wherein, the sensors (13.1, 13.2) are optical sensors (13.1, 13.2) for reading the first position code strip (9) fixedly arranged in the elevator shaft (2) of the elevator installation (1).

12. The sensor assembly (10, 10.1, 10.2, 10.3) according to claim 1, wherein, the sensors (13.1, 13.2) are magnetic sensors (13.1, 13.2) for reading the first position code strip (9) held in the elevator shaft (2) and guided over the sensors (13.1, 13.2).

13. A car for an elevator installation, the car (3.1, 3.2) having a sensor assembly (10, 10.1, 10.2, 10.3) according to any one of the preceding claims.

14. An elevator installation (1) having: at least one elevator shaft (2); at least one first position code strip (9) extending along the elevator shaft (2); and at least one car (3.1, 3.2) according to claim 13, movable along the elevator shaft (2), wherein, the sensor assembly (10, 10.1, 10.2, 10.3) is positioned on the car (3.1, 3.2) for reading the first position code strip (9) by means of the sensors (13.1, 13.2).

15. The elevator installation (1) according to claim 14, having at least two cars (3.1, 3.2) movable in the same elevator shaft (2).

Images