EP2562117B1 - Lift device with position detection device - Google Patents

Description

The invention relates to an elevator device for the transport of persons and / or objects according to the preamble of claim 1 and a building according to the preamble of claim 9.

Various position-determining devices for elevators are known in the prior art. In part, so-called code bands are mounted within the elevator shaft, which are continuously read by a sensor which is mounted on the elevator car.

Further, on the own registrations EP 11 005 240 and EP 11 005 232 directed.

From the WO 2006/130145 A1 a device is known for determining the position of an elevator car, in which the radiation radiated by a transmitter attachable to the car door can be reflected back and detected by reflectors which can be attached to the shaft door.

The object of the invention is to provide an on zugvorrichtung, wherein the position-determining device is easy to retrofit and can be replaced relatively easily.

The object is achieved on the basis of an elevator device, a position determination device, an elevator door and of a building of the type mentioned above, by the characterizing features of claim 1, claim 12, claim 13 and claim 14.

The measures mentioned in the dependent claims advantageous embodiment and development of the invention are possible.

Accordingly, in the elevator device according to the invention, the corresponding marking unit on one of the shaft doors and the detection unit on the associated car door or vice versa, the marking unit on one of the car doors and the detection unit on the associated shaft door.

The elevator device according to the invention basically serves the transportation of persons and objects, the elevator or the cabin being guided within an elevator shaft. The elevator shaft itself is located in a spatial structure comprising at least two floors, in particular in a building or the like. It is also conceivable that the spatial structure is, for example, a vehicle which comprises several floors, for example a ship. In principle, the spatial structure can also be a type of framework. Conceivable here are all possible spatial structures within the meaning of the invention, in which an elevator can be used for transport between several floors.

The transport itself takes place in an elevator car, in which the persons or objects to be transported can be accommodated. The cabin, in turn, has a cabin door which can be opened and closed, allowing access to the cabin when the cabin door is opened, that is, people can get on or off or Objects can be brought into the cabin or transported out of the cabin.

The elevator shaft has at least one shaft opening. In general, such shaft openings are arranged in the region or at the level of the individual floors. It is conceivable, for example, that a shaft opening per floor is arranged, but it can also be arranged, for example, two shaft openings in a floor, in particular on opposite sides of the cabin, so that access from about two opposite sides to the cabin is possible. Access in the sense of the invention means that persons can, for example, get in or out of the cabin or they can be loaded or unloaded with appropriate objects. In addition, at least one shaft door is arranged at the corresponding shaft opening. Through such a shaft door, the shaft opening is closed, in particular, even if no elevator car is in height of the shaft opening. This can inter alia prevent people from accidentally falling into the elevator shaft.

If the elevator car stops in a certain floor as you drive through the elevator shaft, it will hold accordingly at the height of a special shaft opening, which is assigned to this floor. The elevator car then reaches a predetermined holding position in the region of the shaft opening, wherein this holding position is selected so that access to the elevator shaft and thus to the car can be made possible. Basically open or close doors only when the elevator car is in the stop position; There are exceptions in emergency situations in which doors can be opened if necessary.

The elevator car itself in turn has at least one car door to provide access to the elevator car. In the holding position, the car door is assigned a landing door in each case. With regard to the shaft opening or the cabin opening, the car door and the associated one overlap Landing door at least partially. In general, the car door associated with a car door is arranged so that, for example, in the closed position in the holding position people who are in the cabin over the car door, but not see the associated shaft door, which is then arranged behind the car door. On the other hand, persons who are on the corresponding floor outside the cabin regularly see only the landing door during the hold position of the cabin when it is closed.

In order to allow access to the elevator shaft or to the elevator car, the car and landing door must be opened. As a rule, the shaft door and assigned car door also move in the same direction.

The car door is mounted on the cabin movable or movable, while the shaft door is mounted on the shaft itself movable or movable, in the region of the shaft opening. Between car door and landing door also arises in the holding position regularly a narrow gap, a gap opening.

Basically a shaft door can be arranged at a shaft opening, but several can also be provided. Matching the door assembly to the shaft openings the elevator doors are regularly attached to the elevator car accordingly. It is conceivable that at the shaft opening, for example, two shaft doors are arranged, which move when opening and closing in each case in the opposite direction to each other (sliding door). Accordingly, in an associated elevator car also elevator doors can be provided, which correspond to the shaft opening doors in an analogous manner, for example, two elevator doors, which move in the same manner as the (respectively assigned) shaft doors when opening and closing, ie the shaft doors also move in opposite directions set direction to each other. In this way, a car door is assigned according to each shaft door.

Furthermore, an elevator device according to the invention comprises a position determination device for determining the position of the elevator car within the elevator shaft. The position determination device thus serves to determine a shaft or floor information. The position-determining device comprises a marking unit for marking the respective position and also a detection unit for recognizing and / or reading out the marking unit.

By the measure that the marking unit on one of the shaft doors and the detection unit on the associated car door or vice versa are arranged, in principle, various advantages with regard to the assembly can be achieved.

In particular, such a device can be pre-assembled. With commercially available elevator devices, it is regularly necessary that parts of the position-determining device or the entire position-determining device can only be mounted when the elevator car is constructed in the shaft, because only then is it possible to make referenced the exact position information by means of marking units determinable. If inaccuracies occur during construction or assembly, or if, as is often the case with buildings, the building structure shifts unevenly after a certain period of time (ie, "the building settles"), the actual position is correct no longer coincide with the originally applied markings and the positioning device usually operates inaccurate. It is of particular importance, however, that in the holding position in each case the shaft and cabin doors can take a comparatively defined position to each other. Shaft opening and cabin can then be brought into a corresponding, predetermined relative position to each other, however, if the reference for the corresponding positions is accurate enough. Such accurate matching is enabled when the marking unit and the Detection unit are each located on the corresponding sections, which must be related to each other in terms of position detection.

Another advantage is that such a device is also easy to retrofit. Thus, costs can also be saved, since generally less costs for the corresponding assembly must be applied and in addition, however, a comparatively simple exchange of positioning device is possible.

In addition, the elevator device according to the invention has the advantage that an additional protection of the sensors is made possible. Since detection units, that is to say sensors which are generally used in such elevator systems, are exposed to very high loads on a construction site, damage to the sensors can occasionally occur. The risk of the sensor being affected is particularly present when sensitive sensors are used. Finally, it is often necessary in addition that such sensors must be installed by specialized professionals such as sensor technicians or electronics. Therefore, it is particularly advantageous if the corresponding detection units or sensors are preassembled and can be mounted in the elevator production, for example, in the factory itself. On the one hand, this measure also saves costs, since no specialists have to be called for the sensor assembly to the site, on the other hand, the assembly in the factory then under less adverse circumstances than would possibly be the case on the site.

Furthermore, it is regularly advantageous for the detection unit and the marking unit to be arranged on mutually facing sides of the car door and the associated shaft door. This allows the detection unit and the marking unit to be held between them without an obstacle. Becomes distant facilitated by this measure the reading of the marking unit accordingly. Incidentally, in this embodiment, neither the detection unit nor the marking unit is generally visible to the user of the elevator because the facing sides of the car door and the associated landing door are located exactly on the side facing away from the respective user. For example, although the side on which the marking unit or on which the detection unit is attached to the shaft door, faces a person in the cabin, but this in turn is covered by the associated car door for the user in the cabin. As a rule, only the narrow gap opening between the associated booths and shaft doors then lies between the detection unit and the marking unit. Advantageously, therefore, a detection takes place only over a short distance and can therefore be carried out with the appropriate precision.

Incidentally, an embodiment of the invention comprises a control unit for controlling the travel of the elevator car. The term control means in the present sense a control and / or regulation. The control unit can then preferably be designed so that when opening and / or closing the shaft door and the car door essentially a synchronous movement of shaft door and associated car door is executable. However, it is not mandatory that this is absolutely synchronous. Preferably, the position determination device is connected to a control unit or electronic unit, so that, according to the floor selection by the user, the drive of the car to the corresponding floor is controlled / regulated, the floor information being determined by the position determination device.

In principle, it is conceivable that shaft door and / or cabin door are designed as solid doors of a solid body. On the one hand, however, this is usually not necessary, on the other usually unwanted as such massive trained doors have a high weight and on the other hand are also much more expensive. In addition, massive doors are usually more difficult to assemble and transport. For example, a manhole or car door consist only of walls, for example, be made of a metal sheet such as a steel sheet.

In a preferred embodiment of the invention may be provided at bay doors and / or associated car doors on sides facing a recess and / or indentation, which releases a gap between the shaft door and the associated car door. Such a recess / recess may be formed in various ways.

In the case of a door formed from walls (ie not made of solid material), for example, the walls may be designed such that they do not completely delimit or surround the door to the outside. In associated manhole or cabin doors on their sides facing each other to some extent an opening is present, a recess. But it is also possible that the wall is not interrupted at the respective facing sides, but is deformed away from the respectively associated door. For example, accordingly, the car door is provided with a deformation, a recess in the direction of the cabin, while the shaft door could be equipped, for example, with a bulge away from the cabin. As a result, in addition to the already present between associated manhole and cabin doors stomata another space that is thus released, so an enlarged space between the two.

But even if shaft doors or cabin doors are solid, such recesses may be provided. Such a recess can basically be removed from the full material. Furthermore, it is conceivable that such recesses either only on a car door or only on a shaft door, only on some shaft doors or is provided only on some car doors or even on all landing doors or all cabin doors.

In order to be able to provide a particularly space-saving marking unit, it can be designed as an adhesive tape in one embodiment variant of the invention. This also means regularly a simple production of such a marking unit and beyond simple installation. Also, additional markers can already be attached to the corresponding doors, which indicate where the marking unit formed as an adhesive tape has to be glued. This measure facilitates the assembly if necessary. Just when only a gap opening is present between the cabin and the shaft doors, it is advantageous to provide a correspondingly thin marking unit, so that there can be no collisions or no abrasion. By performing as an adhesive tape, the marking unit can be implemented in a particularly simple manner. It is also conceivable to provide the marking unit as a plate.

In a further development of the invention, the marking unit is further designed as a carrier of a 2D code. It is also conceivable that a simple, one-dimensional barcode is used. However, a 2d code also has the advantage that a greater coding / information density is possible. The 2-D code may also be composed of different segments in which different information is coded. In particular, the segments may carry position information or floor information. In addition, the marking unit can be easily manufactured in an advantageous manner, since a 2D code, for example, on an adhesive tape, can be easily printed. As a result, the marking unit can be made very thin and therefore space-saving and arranged.

In particular, when the marking unit is designed as a barcode or 2D code, it is advantageous that the Form detection unit as an optical sensor. Meanwhile, optical sensors can be manufactured comparatively inexpensively. They allow a precise and reliable capture and reading of marking units. In addition, optical sensors can also work accordingly fast and also be evaluated very quickly, so that in terms of position information / position information in the shortest possible time a result can be present at the control unit.

Furthermore, if a recess is provided in manhole or car doors, this measure not only allows a simplified construction and corresponding advantages with respect to the manhole and car door itself. In addition, by the gained, additional space, which is provided by the gap to the Serving accommodation of other devices or units of the elevator serve. For this reason, it is advantageous to arrange the marking unit and / or the detection unit in the gap formed by the recess in a development of the invention. This makes it possible that the thickness of the respective doors is not or only slightly increased by attachment of marking unit or detection unit. Regularly, the detection unit, even if this is narrow and compact, at least have a certain thickness and possibly also be thicker than an existing gap opening between the car door and associated shaft door, even if any recesses or indentations were not present. In any case, the space gained through the recess / log-in or through the gap can be used for this purpose.

In general, however, such elevator systems require not only a sensor for position determination. The objective of lifts is to ensure that persons in the access area to the elevator car can not be pinched or crushed. If, for example, a person reaches into the still open gap of a closing door, it is necessary that The door is stopped as quickly as possible in their movement and possibly also opens again. It is particularly advantageous if the corresponding detection unit additionally comprises a further optical sensor for detecting persons and / or objects.

In one embodiment of the invention, such a further optical sensor for detecting persons or objects can be designed as a light barrier sensor for emitting and / or receiving light barrier signals. Such a photoelectric barrier can also be realized in different ways:

By way of example, a transmission unit which emits optical signals can be provided in the detection unit. At a predetermined location, for example, a reflection element may then be attached, for example a metal lug, with which the optical signal is reflected and returned to a receiving unit in the detection unit. If this signal is detected, it means that there is no person / object in the photocell. Otherwise, if so a person and / or an object gets into the light barrier, it is interrupted and the optical signal does not return to the receiving unit or to the detection unit. In this case, a corresponding signal is sent to the control unit, which causes a movement of doors (shaft doors and / or car doors) is stopped or does not even begin and possibly open the doors again. For better reflection, for example, reflective stickers or labels may be attached to the corresponding reflection units.

It is conceivable z. B. which is the reflection unit on the elevator car and / or on the car door, preferably in the space formed by the recess and / or on the shaft door, preferably arranged in the gap formed by the recess. The detection unit can thus be arranged / formed so that they optical Emits signals which are aligned parallel to the access opening and pass through the gap opening. In particular, it is conceivable for the detection unit or at least part of the detection unit to project into the gap opening in such a way that a corresponding optical signal for detecting person and / or objects within the gap opening is guided from there. Thus, if the area within the gap opening is monitored, then the critical area for the monitoring is detected.

Basically, the entire door area z. B. be detected grid-shaped. As a rule, the monitoring must take place at certain intervals, so that it is possible to at least detect objects of a certain size. It is also conceivable, in principle, that the beams are transmitted radially for monitoring.

Instead of or in addition to a light barrier, such an optical sensor for detecting persons or objects can also be designed as a so-called time-of-flight sensor (abbr .: TOF sensor). In such a sensor, a transit time measurement of an emitted signal takes place, which in turn is at least partially reflected and returned to the detection unit. Such signals can for example be done with infrared light, but in principle also with visible light (wavelength range of visible light: about 400 nm - 800 nm). In this case, for example, be modulated onto the corresponding emitted optical signal, a special signal that changes only very slowly with respect to the oscillation period of the light, for example, a contrast (very) low-frequency signal. With a modulated low-frequency signal, the phase shift can then be determined with respect to the emitted signal after detection of a reflected component. Thus, a maturity determination is possible. Now get objects or people in the monitored area so shortens the Running distance and thus the duration of the transmitted signal.

Accordingly, a position determining device according to the invention for determining the position of an elevator car within the elevator shaft for an elevator device according to the invention or an embodiment of the elevator device according to the invention is formed and is characterized in particular by the marking unit on one of the shaft doors and the detection unit on the associated car door or vice versa attachable are. An elevator door according to the invention, d. H. in particular a shaft door or car door, is characterized in that a position-determining device or an embodiment according to the invention is provided.

Furthermore, a building according to the invention is characterized in that an elevator device according to the invention or a variant of the elevator device according to the invention is present.

Embodiment:

Embodiments of the invention are illustrated in the drawings and are explained in more detail below, indicating further advantages and details.

Figur 1

eine schematische Darstellung einer Aufzugvorrichtung mit Schiebetüren gemäß der Erfindung,

Figur 2

eine schematische Darstellung einer Aufzugvorrichtung gemäß der Erfindung mit einer Teleskopschiebetür,

Figur 3

eine schematische Darstellung einer Aufzugvorrichtung mit einer Schiebetür und einer Lichtschranke gemäß der Erfindung,

Figur 4

eine schematische Darstellung einer weiteren Aufzugvorrichtung mit Schiebetür sowie mit Lichtschranke gemäß der Erfindung,

Figur 5

eine schematische Darstellung einer Aufzugvorrichtung mit einfacher Tür und mit zusätzlicher Lichtschranke gemäß der Erfindung,

Figur 6

eine schematische Darstellung einer zugeordneten Schacht- und Kabinentür mit Aussparungen sowie mit Markierungs- und Detektionseinheit gemäß der Erfindung,

Figur 7

eine schematische Darstellung von Schacht-und Kabinentür gemäß der Erfindung mit insgesamt nur einer Aussparung,

Figur 8

eine schematische Darstellung von zugeordneter Schacht- und Kabinentür mit Einbuchtungen gem. der Erfindung,

Figur 9

eine schematische Darstellung von Schacht-und Kabinentür mit Aussparung und Einbuchtung gemäß der Erfindung, sowie

Figur 10

eine schematische Darstellung, wie das Codeband von der Detektionseinheit erfasst wird, in zwei Ansichten.

In detail show:

FIG. 1

a schematic representation of an elevator device with sliding doors according to the invention,

FIG. 2

a schematic representation of an elevator device according to the invention with a telescopic sliding door,

FIG. 3

a schematic representation of an elevator device with a sliding door and a light barrier according to the invention,

FIG. 4

a schematic representation of another elevator device with sliding door and with light barrier according to the invention,

FIG. 5

a schematic representation of an elevator device with a simple door and with additional light barrier according to the invention,

FIG. 6

a schematic representation of an associated shaft and cabin door with recesses and with marking and detection unit according to the invention,

FIG. 7

a schematic representation of shaft and cabin door according to the invention with a total of only one recess,

FIG. 8

a schematic representation of associated manhole and cabin door with indentations acc. the invention,

FIG. 9

a schematic representation of manhole and cabin door with recess and indentation according to the invention, and

FIG. 10

a schematic representation of how the code band is detected by the detection unit, in two views.

FIG. 1 shows a schematic section through a portion of an elevator device 1 in plan view in the region of a shaft opening 2. Shown are, inter alia, the concrete walls 3 with the already mentioned, in between Furthermore, a shaft 4, in which there is again an elevator car 5 and can be moved. The direction of movement is perpendicular to the plane of the FIG. 1 , Further, a sliding door system 6 is provided, which allows access to the car 5 through the shaft opening 2. This sliding door system 6 in turn comprises two shaft doors 7a and 7b. These shaft doors 7a and 7b belong to the shaft and are mounted or movably mounted in the region of the shaft opening 2. In turn, the car doors 8a and 8b are mounted movably on the car 5. The landing door 7a is associated with the car door 8a, while the landing door 7b is associated with the car door 8b.

When the sliding door 6 is opened, the associated doors, that is, the landing door 7a and the car door 8a, move to the left in the drawing (see directional arrows L), while the landing door 7b and car door (b move to the right (directional arrows R) A person who is located, for example, within the car 5, thus sees only the car doors 8a and 8b with the sliding door 6 closed, while a person who is on the floor on the other side of the sliding door 6 (ie in the When opening, the doors move simultaneously to the left (namely, the doors 7a and 8a) and to the right (the doors 7b and 8b), the reference numeral 9 'indicates the roller plane in which the landing doors 7a and 7b move, while the reference numeral 9 "denotes the rolling plane of the car doors (8a and 8b), these rolling planes 9 'and 9" are each Is shown in dashed lines in the drawing. Between these roller levels 9 'and 9 "there is a gap opening 10, which accordingly also extends respectively between the car doors 8a, 8b on the one hand and the shaft doors 7a, 7b on the other hand.

The shaft opening doors 7a, 7b and also the car doors 8a, 8b each have associated recesses 11a, 11b and 12a, 12b. These recesses 11a, 11b, 12a, 12b are as Openings formed within each associated door sides. In the recess 11a of the shaft door 7a, a code tape 13 is arranged as an adhesive tape. On the associated car door 8a, an optical sensor is arranged as a detection unit 14 on the inside, in holding position, exactly opposite the shaft door 7a or of the code band 13. The optical sensor 14 has a greater thickness than the adhesive tape 13, but may be integrated in the door 8a through the recess 12a such that it does not protrude into the gap opening 10.

When driving the car 5 all doors 7a, 7b, 8a, 8b are closed. When the car 5 passes the shaft opening 2, the optical sensor 14 can read the code band 13 and thus determine the position of the elevator car 5. In particular, this makes it possible to provide a relatively accurate reference with respect to the shaft opening 2 and thus accurate position information can be obtained.

In FIG. 2 In turn, a similar situation is shown, namely an elevator device 101 having a shaft opening 102, concrete walls 103, a shaft 104, and a car 105 traveling in the shaft. The sliding door 106, however, is different from FIG. 1 designed as a telescopic sliding door. In this case, the shaft door 107a is offset from the shaft door 107b perpendicular to the direction of displacement. Likewise, the car doors 108a and 108b are correspondingly offset from each other. Thus, the associated doors, namely, the hoistway door 107a and the car door 108a are closer to each other than the hoistway door 107b to the hoistway door 108b. Overall, the roller levels 109 'and 109 "are made wider because the shaft doors 107a, 107b must be placed side by side in the open position (the car doors 108a and 108b are analogous in the opening position) a gap opening 110. However, all doors 107a, 107b, 108a, 108b can only drive in the drawing to the right (direction R). The control unit is like that designed that the doors 107a and 108a drive faster in speed than the doors 107b and 108b, so that both reach about the same speed when opening their final position (analogous to the closing process). Furthermore, the doors 107a, 107b, 108a, 108b have corresponding recesses 111a, 111b, 112a, 112b, respectively, again correspondingly arranged in the doors 107a and 108a corresponding to the code band 113 and the optical sensor 114. The end elements 115 'and 115 "which are each attached to a concrete wall 103 and in the case of reference numeral 115" attached to the car 105 serve that a person can not intervene laterally and thus in particular squeezed when driving the cabin.

FIG. 3 shows a similar elevator device 201, as shown in FIG FIG. 1 is shown. In the present case, an adhesive tape 213 is also disposed in the hoistway door 207a, while a detection unit 214 is provided in the car door 208a. The arrows 216 show how the detection unit 214 reads out the code band 213. Between shaft doors 207a, 207b and car doors 208a, 208b, a gap 210 is provided. However, the detection unit 214 protrudes into this gap opening. Furthermore, the detection unit 214 comprises an optical sensor for detecting persons and / or objects. This optical sensor, which is integrated in the detection unit 214, emits light beams parallel to the direction of movement of the sliding doors, in the drawing to the right along the arrow S. The emitted light of the light barrier is an optical detector 217. It is also conceivable that instead of an optical detector 217, a reflection lug, which reflects back the emitted optical signal of the light barrier, is arranged at the same location. If the doors open correspondingly to the right and to the left (displacement directions R and L), then in the area between the associated doors 207a and 208a and 207b and 208b, an ever-increasing gap is formed perpendicular to the gap opening 210, which differs from the beams of the light barrier FIG. 4 indicates an analog elevator device 301 FIG. 3 However, wherein the adhesive tape on the car door 308a, the corresponding detection unit on the shaft door 307a and the light barrier detector 317 is accordingly arranged on the shaft door 307b. The light barrier has the light beam S, whereby when S is interrupted a movement of the doors is prevented / stopped.

In FIG. 5 again, an elevator device 401 (similar to FIG FIG. 3 ), in which only one landing door 407 and only one car door 408 is provided. The light barrier has a detector 417. In contrast to FIG. 3 However, the light barrier detector 417 is attached to the rigid housing of the cabin 405 and not on a movable door. The two doors 407a and 408a can only be moved to the left (directional arrow L). The detector unit 414, with which the code tape 413 can be read out and which also emits the optical signal S for the light barrier, protrudes into the gap opening 410. The light barrier detector 417 extends correspondingly in extension of the gap opening 410 as far into it.

FIG. 6 shows a hoistway door 507 and an associated car door 508 with a code tape 513 on the hoistway door 507 and a detector unit 514 on the car door 508, both doors having recesses 511, 512 in the form of openings.

FIG. 7 again shows a configuration in which the shaft opening door 607 by a closed circumferential wall, while the car door 608 has a recess 612 in the sense of an opening. In the recess 612, the detector unit 614 is arranged. Between both doors there is a gap opening 610 and a gap Z. At or on the shaft door 607, the code tape is glued.

FIG. 8 again, the hoistway door 707 and the car door 708 are formed to have recesses 711 and 712 Increase the gap opening 710 in the corresponding area. In the indentations 711 and 712, the code band 713 and the detector 714 are respectively arranged.

In the FIG. 9 shown double door comprises a shaft door 807 and a car door 808 with detectors 813 and 814, wherein in the shaft door 807 a recess 811 and in the car door a recess 812 is formed.

FIG. 10 also shows an elevator device 901 acc. of the invention and a corresponding view A, which outlines how the code band 913 is perceived from the perspective of the detector unit 914. In this case, the detector unit 914 detects an image through the recesses or openings 911, 912 of the shaft and car doors 907, 908, respectively, through which the code strip 913 becomes visible through the gap between the associated doors, which is not specified here. In the view A is therefore still outside an edge of the car door 908 visible, then through the opening 912 a view of the shaft door 907 with the opening 911, which in turn gives the view of the code band 913 free.

In principle, in a preferred embodiment of the invention, the marking unit is arranged on a shaft door and the detection unit is arranged on the associated car door. This embodiment can also be manufactured and assembled usually cheaper.

LIST OF REFERENCE NUMBERS

1

winder

2

shaft opening

3

concrete wall

4

shaft

5

cabin

6

Sliding door (total)

7a

shaft door

7b

shaft door

8a

cabin door

8b

cabin door

9 '

Roller plane of the shaft doors

9 ''

Roller plane of the cabin doors

10

gap opening

11a

recess

11b

recess

12a

recess

12b

recess

13

code strip

14

optical sensor

101

winder

102

shaft opening

103

concrete wall

104

shaft

105

cabin

106

Sliding door (total)

107a

shaft door

107b

shaft door

108a

cabin door

108b

cabin door

109 '

Roller plane of the shaft doors

109 ''

Roller plane of the cabin doors

10

gap opening

111

recess

111b

recess

112a

recess

112b

recess

113

code strip

114

optical sensor

115 '

Side panel on the shaft

115 ''

Side panel on cabin

201

winder

207a

shaft door

207b

shaft door

208a

cabin door

208b

cabin door

210

gap opening

213

code strip

214

detector unit

216

light

217

Photoelectric detector

301

winder

307a

shaft door

307b

shaft door

308a

cabin door

308b

cabin door

313

code strip

314

Detector unit,

317

Photoelectric detector

401

winder

407

shaft door

408

cabin door

410

gap opening

413

code strip

414

optical sensor

417

Photoelectric detector

507

cabin door

508

shaft door

511

recess

512

recess

513

code strip

514

sensor

607

cabin door

608

shaft door

610

gap opening

612

recess

613

code strip

614

optical sensor

707

cabin door

708

shaft door

710

gap opening

711

indentation

712

indentation

713

code strip

714

detector unit

807

cabin door

808

shaft door

811

indentation

812

recess

813

code strip

814

optical sensor

901

winder

907

cabin door

908

shaft door

911

recess

912

recess

913

code strip

914

detector unit

A

view

L

Direction left

R

Right direction

S

Light barrier signal

Z

gap

Claims (9)

1. Lift device (1, 101, 201, 301, 401, 501, 601, 701, 801, 901) for conveying persons and/or objects inside an lift shaft (4, 104) of a three-dimensional structure comprising at least two floors, in particular a building or the like, comprising a lift cab (5, 105) that can accommodate the persons and/or objects to be conveyed, having at least one cab door (8a, 108a, 208a, 308a, 408, 508, 608, 708, 808, 908; 8b, 108b, 2D8b, 308b) for opening and/or closing the cab, in which the lift shaft comprises at least one shaft opening (2, 102) which provides access to the lift shaft and/or the lift cab, and at least one shaft door (7a, 107a, 207a, 307a, 407, 507, 607, 707, 807, 907; 7b, 107b, 207b, 307b) that can be used to open and/or close access to the lift shaft and/or the lift cab, wherein the lift shaft and the lift cab are designed so that, in a stopped position of the lift cab in the region of the shaft opening, a cab door (8a, 108a, 208a, 308a, 408, 508, 608, 708, 808, 908; 8b, 108b, 208b, 308b) and a shaft door (7a, 107a, 207a, 307a, 407, 507, 607, 707, 807, 907; 7b, 107b, 207b, 307b) associated with the cab door are respectively arranged in an overlapping manner in a region of the shaft opening in order to provide access to the lift cab, comprising a position determination device for determining the position of the lift cab inside the lift shaft, comprising:

   - a marking unit (13, 113, 213, 313, 413, 513, 613, 713, 813, 913) for marking the position,

   - a detection unit (14, 114, 214, 314, 414, 514, 614, 714, 814, 914) for detecting and/or reading the marking unit,

   wherein the marking unit is arranged on one of the shaft doors and the detection unit is arranged on the associated cab door or, conversely, the marking unit is arranged on one of the cab doors and the detection unit is arranged on the associated shaft door, wherein
   the detection unit and the marking unit are arranged on mutually facing sides of the cab door and the associated shaft door, respectively,
   characterised in that
   the assigned shaft door and/or the cab door have on their mutually facing sides a recess (11a, 11b, 12a, 12b, 111a, 111b, 112a, 112b, 511, 512, 612, 812, 911, 912) and/or an indentation (711, 712, 811), which uncovers an intermediate space (Z) between the shaft door and the associated cab door, and in that the marking unit and/or the detection unit is/are arranged in the intermediate space formed by the recess and/or the indentation and wherein the shaft door and the cab door are formed by walls and are not completely delimited or surrounded externally by the walls and/or a deformation of the cab door is provided in the direction of the cab or the shaft door away from the cab, so that in this way the intermediate space is formed and wherein the marking unit is in the form of a carrier of a bar-code and/or a 2D code.
2. Lift device according to claim 1, characterised in that the marking unit is in the form of adhesive tape.
3. Lift device according to one of the preceding claims, characterised in that the detection unit is in the form of an optical sensor for detecting and/or reading the marking unit.
4. Lift device according to one of the preceding claims, characterised in that the detection unit (214, 314, 414) comprises a further optical sensor for detecting persons and/or objects.
5. Lift device according to claim 4, characterised in that the additional optical sensor for detecting persons and/or objects is in the form of a light barrier sensor for emitting and/or receiving light barrier signals.
6. Lift device according to claim 4, characterised in that the additional optical sensor for detecting persons and/or objects is designed in the form of a time-of-flight (TOF) sensor.
7. Lift device according to one of the preceding claims, characterised in that a reflection unit is provided for reflecting light barrier signals and/or a light barrier detector (217, 317, 17) for receiving light barrier signals (S).
8. Lift device according to claim 7, characterised in that the reflection unit and/or the light barrier detector is/are arranged on the lift cab and/or on the cab door, preferably in the intermediate space formed by the recess, and/or on the shaft door, preferably in the intermediate space formed by the recess and/or indentation.
9. Building, characterised in that a lift device is provided according to one of the preceding claims.

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