Door system

Abstract

A door system, an elevator and a method for opening a door system. The door system has at least one shaft door, a car door drive and a door coupling for coupling the car door to the shaft door. According to the invention, the car door has an electrically activatable car door locking device, by means of which the car door can be locked and unlocked in a closed position. The first portion of the door coupling has a contact body, the contact body having a length dimension along the length direction, the length dimension being greater than the guide lintel spacing. The contact body has a width dimension in the width direction, which width dimension is smaller than the guide lintel distance. The contact body is rotatably arranged on the car door between the first guide lintel and the second guide lintel. The lever is connected to the drive mechanism and the lever is connected to the contact body in a rotationally fixed manner such that the contact body can be rotated by means of a movement of the drive mechanism from an uncoupled position, in which the contact body is arranged between the first and second guide lintel due to a width dimension having a clearance, into a coupled position, in which the contact body is arranged between the first and second guide lintel. In the coupled position, the contact body contacts the first guide lintel and the second guide lintel.

Description

Technical Field

[0001] The invention relates to a door system, an elevator having such a door system and a method for operating such an elevator. Background Art

[0002] In an elevator, the car is usually displaced vertically between different floors in a building in a shaft. On the floors, it is arranged that passengers can enter and exit the car, or other loads to be transported are loaded into or unloaded from the car. In order to be able to enter the car, a shaft door is arranged on the floor, and the car has a car door. The car door includes at least one car door leaf, and the shaft door includes at least one shaft door leaf. The car door and the shaft door together form an openable and closable passage from the car to the floor and from the floor to the car. In order to ensure that the car door remains closed during travel, the car door has a car door locking device, which locks one or more car door leaves during travel. Similarly, the shaft door has a shaft door locking device, which keeps one or more shaft door leaves locked at least when there is no car.

[0003] Furthermore, the car door has a drive which is designed to open and close the car door leaf. Typically, this movement of the car door leaf is transmitted to the shaft door leaf to be opened at the arrival floor by means of a door coupling. For this purpose, a first part of the door coupling on the car door cooperates with a second part of the door coupling on the shaft door.

[0004] US5485896A shows a simple design of a door coupling. However, this construction requires a separate drive for the door coupling. This makes the solution expensive to manufacture. Summary of the invention

[0005] Therefore, the object of the present invention is to provide a low-cost door system.

[0006] According to a first aspect of the invention, a door system achieves this object. The door system has at least one shaft door, a car door drive and a door coupling for coupling the car door to the shaft door. The car door and the shaft door can be moved between an open position and a closed position. The car door has an electrically activatable car door locking device, by which the car door can be locked and unlocked in the closed position. The shaft door has a separate, electrically activatable shaft door locking device, by which the shaft door can be locked and unlocked in the closed position. The car door drive comprises a motor and a drive mechanism. The car door can be moved from the closed position to the open position and back by means of the drive mechanism. The door coupling has a first part arranged on the car door and a second part arranged on the shaft door. The second part of the door coupling has at least one vertically oriented first guide lintel extending from the shaft door and a vertically oriented second guide lintel extending from the shaft door. The first guide lintel and the second guide lintel are arranged relative to each other at a guide lintel spacing. The first part of the door coupling has a contact body, wherein the contact body has a length dimension along the length direction, which is greater than the guide beam spacing. The contact body has a width dimension along the width direction, which is less than the guide beam spacing. The contact body is arranged on the car door in a rotatable manner between the first guide beam and the second guide beam. The rod is connected to the drive mechanism and the rod is connected to the contact body in a torsionally fixed manner, so that the contact body can be rotated from a disconnected position to a connected position by means of the movement of the drive mechanism, in which the contact body is arranged between the first guide beam and the second guide beam with clearance based on the width dimension, and in the connected position, the contact body contacts the first guide beam and the second guide beam.

[0007] According to a second aspect of the invention, an elevator achieves this object. The elevator comprises a door system according to the first aspect of the invention, a position measuring device, a car and a control device. The position measuring device detects the position of the car. The control device evaluates the position and controls the opening and closing of the door system.

[0008] According to a third aspect of the present invention, the method for operating an elevator according to the second aspect of the present invention achieves this object. The method comprises the following steps:

[0009] The car door is coupled to the car door in that the door drive moves the drive member by a first distance in the opening direction and thereby rotates the contact body until the door coupling is coupled.

[0010] The car door and shaft door are unlocked by electrical signals at the car door locking device and the shaft door locking device.

[0011] The car door is opened in that the door drive moves the drive mechanism by a second distance in the opening direction and thereby entrains the shaft door.

[0012] The enabling features and advantages of embodiments of the present invention may be considered to be based on the concepts and discoveries described below, including but not limited to the present invention.

[0013] The car door and the shaft door can together open the passage from any floor of the elevator to the car. In addition, the shaft door closes the shaft when necessary and can thus prevent people from falling into the shaft. In addition, the car door seals the car when necessary and can thus prevent people in the car from touching the passing surface of the shaft during travel.

[0014] The car door and the shaft door can be configured in different ways. For example, the car door and the shaft door can include rolling shutter doors, folding doors, car door leaves, shaft door leaves, etc. These designs can especially be opened vertically or horizontally.

[0015] The car door and the shaft door are preferably movable together between an open position and a closed position. In particular, in the case of a normal opening of the door of the car on the floor, the doors are thus opened together. However, the doors can also be moved individually in an emergency or within the service area.

[0016] The door system has the advantage that the door system can be produced very cost-effectively by combining an electrically activatable car door locking device, an electrically activatable shaft door locking device and a door coupling of simple design. This is because the door coupling only serves to couple the movement of the shaft door to the car door. As a result, the door coupling can be of very simple design, since it does not mechanically activate the locking mechanism, for example.

[0017] During travel, the car preferably moves vertically along the travel path. As soon as the car reaches the floor, i.e. when the floor-level walkable surface of the car and the floor-level walkable surface on the floor are at approximately the same height, and, optionally, when the car is substantially stationary, the car door is opened by means of a car door drive with the aid of a drive mechanism. The car is at the height of the floor, and optionally the car is substantially stationary, which can be determined by a position measuring device. The position measuring device determines the position of the car and, optionally, the speed along the travel path. The position measuring device transmits the position-measured data to a control unit of the elevator. The control unit can be at least partially installed in the position measuring device. The control unit can monitor the door drive and thus the opening and closing of the car door and the shaft door. In this case, the control unit can take into account the position measured by the position measuring device.

[0018] The length direction is the straight line connection between two points of the contact body which are preferably at the greatest distance from one another in their projection onto the plane of the shaft door or car door. The width direction is parallel to the distance between two planes between which the contact body is located, so that the contact body is contacted by both planes. Preferably, the two planes are also perpendicular to the car door or shaft door and are oriented parallel in the vertical direction, i.e. perpendicular to the direction of door movement, in particular when the contact body is in the uncoupled position.

[0019] The contact body contacts the first guide crossbar and the second guide crossbar in the coupled position because the longitudinal dimension along the length direction is longer than the guide crossbar spacing between the first guide crossbar and the second guide crossbar. Therefore, the contact body contacts the first guide crossbar and the second guide crossbar when the contact body rotates.

[0020] The first part of the door coupling is arranged on the car door. The first part of the door coupling comprises a contact body. The longitudinal direction of the contact body extends in the travel direction during travel, i.e. vertically. The width direction is preferably perpendicular to the longitudinal direction and is therefore oriented horizontally in this orientation. The contact body is spaced far enough from the car door and the first guide lintel and the second guide lintel extend far enough from the shaft door so that the contact body is at least partially mounted between the first guide lintel and the second guide lintel. The contact body is spaced apart from the shaft door and the guide lintel is spaced apart from the car door.

[0021] Since the width dimension is smaller than the guide lintel spacing, the contact body can pass the second part of the door coupling element, in particular the first guide lintel and the second guide lintel, without contact. For this purpose, the contact body is preferably arranged centrally between the first guide lintel and the second guide lintel. As a result, during travel of the car, neither noise nor impact occurs when the first part of the door coupling element passes the second part of the door coupling element, which is preferably mounted on each shaft door.

[0022] Preferably, the first guide web is arranged parallel to the second guide web.

[0023] According to a preferred embodiment, the contact body is made of an elastomer. An elastomer can be understood here in particular as a vulcanizate of natural rubber or synthetic rubber. This has the advantage that the connection is achieved very quietly.

[0024] The first step of opening the car door comprises coupling the car door and the shaft door together. In order to connect the car door to the shaft door, the contact body is twisted by an angle. As a result, the longitudinal direction of the contact body is twisted and the contact body contacts the first guide beam and the second guide beam at a contact point, respectively. The twisting is caused by a rod, which is connected to the contact body in a torsionally fixed manner. Preferably, the contact body and the rod are configured as a unit and are particularly rotatably supported on the surface of the car door. For example, the support can be achieved by a support pin that is directly mounted on the car door or mounted on a base attached to the car door. Here, one end of the rod is connected to the contact body, and the other end of the rod is preferably connected to the drive mechanism of the car door drive in an articulated manner. In order to twist the length direction from the vertical orientation to the twisted orientation, the motor of the door drive moves the drive mechanism by a first section. Here, the drive mechanism is moved to such an extent that the rod is twisted at the coupling angle, and therefore the contact body is also twisted at the coupling angle. Since the contact body is firmly connected to the rod, the contact body and the rod are respectively rotated by the same common coupling angle.

[0025] When the contact bodies are not yet coupled, the rod preferably deviates from the vertical by a lead angle.When the contact bodies are coupled, the rod preferably extends substantially vertically.

[0026] As soon as the contact body contacts the first guide lintel and the second guide lintel, the car door and the shaft door are coupled.

[0027] The advantage of the drive mechanism is that at least a part of the drive mechanism moves linearly in the door opening direction, and the car door is moved by the drive mechanism by means of an indirect connection of the drive mechanism to the car door via a contact body and a rod. The drive mechanism can be designed, for example, as a screw drive, a rack drive, a scissor linkage, a hydraulic cylinder or a pneumatic cylinder.

[0028] According to a preferred embodiment, the drive mechanism is designed as a drive mechanism that can rotate around the first roller and around the second roller, and preferably, the first roller is driven by a door drive.

[0029] The two rollers are preferably arranged on the door arch. In this case, the first roller is preferably arranged in the door drive. The second roller is arranged opposite the first roller on the door arch. In this case, the drive mechanism running through the rollers can be a chain, a rope, a belt or a toothed belt.

[0030] Preferably, the length direction of the contact body is twisted from the vertical direction in the coupled state at a coupling angle between 10° and 80°. More preferably, the coupling angle is between 15° and 40°. Even more preferably, the coupling angle is 30°. This has the advantage that the first section of the drive mechanism for coupling is short. Here, the contact body contacts the first guide beam at a first contact point and contacts the second guide beam at a second contact point. The two contact points prevent the contact body from twisting further. This has the advantageous effect that when the door is subsequently opened, the force applied by the door closing device increases or at least maintains the pressing force on the contact point between the contact body and the guide beam. As a result, all elements are clamped to each other by the motor of the car door drive via the drive mechanism, the contact body, the guide beam and the door closing device of the shaft door. All elements are therefore pressed against each other so that the movement of the motor is transmitted to the car door and the shaft door without any clearance.

[0031] The coupling angle may be identical to the lead angle.The rod is then oriented substantially vertically in the coupled position.

[0032] Alternatively, the coupling angle may be between 70° and 110°, or preferably 90°. For this purpose, the contact body or the rod has a stop which prevents further twisting after reaching the coupling angle. Furthermore, in this case, the lead angle is preferably 45°. Thus, the rod moves 90° between a coupled position deviating 45° from the vertical and an uncoupled position deviating 45° from the vertical. Thus, the coupled position and the uncoupled position are symmetrical to each other with respect to the vertical direction.

[0033] In the embodiment in which the length direction is twisted by about 90° from the vertical, it is particularly advantageous that the high friction of the elastic body holds the contact body in the position twisted by 90°. The elastic body generates a high friction force because the contact body is clamped between the first guide web and the second guide web. For this purpose, the length dimension in this case is only slightly larger than the guide web spacing, preferably between about one thousandth and 5%.

[0034] In both alternatives, these contact points now prevent a relative movement of the shaft door with respect to the car door.

[0035] Since the car door and the shaft door are connected to each other in the coupled state, the shaft door locking device can be opened. It is now advantageous if the car door locking device and the shaft door locking device can be electrically activated. Here, the current for unlocking the electrically activatable car door locking device can be provided directly on the car by the control unit. Likewise, the control unit on the floor or in the machine room can provide the current for activating the shaft door locking device. Preferably, both locking devices have a monitoring device for monitoring the state of the locking devices.

[0036] The shaft door locking device and the car door locking device can be designed essentially identically. The electric actuation of the locking device is based on the principle that the control device generates a signal that causes the shaft door locking device or the car door locking device to open or close. Preferably, the unlocking is achieved directly by supplying the lifting magnet with current, that is to say, the lifting magnet is preferably energized by the control device, and the lifting magnet thereby opens the locking device. In this case, the current can be generated directly in or at the control device. Alternatively, the control device can send a command to the activation component via the bus system, and the activation component then switches on the current, which then activates the lifting magnet.

[0037] The signal lines for the shaft door locking device and the signal lines for the car door locking device can be realized directly via cables. Alternatively, a bus system can also be used in order to then, for example, additionally transmit status data of the shaft door locking device or the car door locking device back to the elevator control. The status data include, for example, the status of the car door locking device or the shaft door locking device, the duration data of the door movement, or the power consumption of the drive.

[0038] In an advantageous embodiment, the lifting magnet is powered so that the locking device is opened by removing the locking bar from engagement with the locking bar stop. As soon as the power supply is interrupted, the locking bar falls back into engagement with the locking bar stop, for example by means of a spring or gravity which preloads the locking bar in the direction of the engagement position with the locking bar stop. Furthermore, the locking bar can be designed such that when the power supply is disconnected, the locking device can be locked by means of a one-sided chamfer that allows the locking bar to move on the locking bar stop. The locking bar can thus function like a snap-fit.

[0039] As soon as the car door locking device and the shaft door locking device are opened, the door drive can shift the drive mechanism by a second distance in the opening direction. As a result, the door drive moves the car door and the shaft door together into the open position. As soon as both doors have left the range of the door locking device, the activation of the car door locking device and the shaft door locking device can be terminated. This can save energy.

[0040] According to a preferred embodiment, the method further comprises the following steps:

[0041] Close the car door and shaft door.

[0042] The movement of the first car door leaf into the closed position, ie the closing of the door, can be carried out in reverse. If the respective locking bolts are locked, the car door locking device and the shaft door locking device can preferably remain deactivated here.

[0043] According to a preferred embodiment, the method further comprises the following steps:

[0044] The car door is closed by: the car door driving device moves the driving mechanism in the closing direction by a third section until the first car door is closed;

[0045] Lock the car and shaft doors, and

[0046] The door coupling is disconnected in that the car door drive moves the drive mechanism in the closing direction by a fourth distance.

[0047] The door drive moves the drive mechanism to the third section, and thus closes the door by this movement. Here, preferably, the movement is controlled in the following manner so that when the closed position is reached, the speed of the movement is very small or the door drive preferably stops briefly. This prevents the doors from colliding with each other, and the door closes quietly. The locking device can remain deactivated when closed. For this reason, the car locking device and the shaft locking device can, for example, have a snap mechanism, such as it is preferably realized by a chamfered latch. Preferably, the car locking device and the shaft locking device are activated when closed to reduce the noise during locking, and, for example, to prevent snap noise. For example, the snap mechanism may otherwise generate a snap noise when crossing the locking device stop. After locking, the drive mechanism continues to move the fourth section through the door drive, and the car door is disconnected from the shaft door. Now the car can safely travel along the travel path again.

[0048] The latch stop can be implemented as a nose of the car door or a recess in the car door. The latch is preferably preloaded by a spring so that the latch is potentially engaged with the latch stop when the car door locking device or the shaft door locking device is not activated.

[0049] According to a preferred embodiment, the car door has at least one first car door leaf, and

[0050] The shaft door has at least one first shaft door leaf.

[0051] The first car door leaf and / or the first shaft door leaf are fixed door leaves. Preferably, the door leaf is designed in a planar and rectangular manner and is arranged to be movable transversely to the passage direction through the door. A first guide lintel and a second guide lintel can be fixed to the shaft door leaf. A support device or a base for supporting the contact body can be provided on the car door leaf.

[0052] According to a preferred embodiment, the car door has a second car door leaf and the shaft door has a second shaft door leaf, wherein a first door coupling element couples the first car door leaf to the first shaft door leaf and in particular a second door coupling element couples the second car door leaf to the second shaft door leaf.

[0053] In a first alternative design, the first car door leaf and the second car door leaf can be moved telescopically. In this case, the first car door leaf moves faster, in particular twice as fast as the second car door leaf. It is advantageous here that the door coupling and the car door locking device are mounted on the first door leaf that moves faster. Similarly, the coupled first shaft door leaf preferably moves twice as fast as the second shaft door leaf. The movement of the second shaft door leaf is caused by a mechanism that transmits the movement of the first shaft door leaf to the second shaft door leaf with a reduction of 50%.

[0054] In a second alternative design, the second door coupling element can couple the second car door leaf to the second shaft door leaf. This is particularly advantageous in the case of a central door opening. In the case of a central door opening, the door leaves open away from each other in opposite directions. As a result, the two shaft doors do not have to be coupled to each other, but can be moved independently of each other. This saves additional mechanisms in each shaft door, such as a looping rope that would cause such a coupling.

[0055] In other words, the car therefore has a second door coupling for the second car door leaf and the second shaft door leaf.

[0056] The use of the two shaft door leaves is preferably carried out in a manner similar to the use of the two car door leaves.

[0057] According to a preferred embodiment, the contact body, the first guide web and the second guide web are arranged above the car door and / or above the shaft door.

[0058] Here, "above the car door or shaft door" describes that these door couplings are located above a horizontal plane extending infinitely wide, which is tangent to the upper end of the car door and / or shaft door and in particular to the upper end of the first car door leaf and / or the first shaft door leaf.

[0059] Since the door coupling is arranged above the car door leaf or the shaft door leaf, at least some parts of the door coupling can be arranged vertically above the door and require less space between the car door and the shaft door. As a result, the shaft door leaf and the car door leaf can be arranged very close to each other, because for example a rod or a supporting structure for guiding the lintel can be arranged outside the clearance between the car door and the shaft door. As a result, the shaft door and the car door are arranged very close to each other and thus more space is left to make the interior space of the car larger.

[0060] According to a preferred embodiment, the door system has a prestressing device which loads the contact body with a prestressing force in the direction of the disconnection orientation.

[0061] The preload in the disconnected orientation ensures that the contact body cannot be twisted out of this orientation unintentionally during travel. Such a twist could result in the contacting of guide elements that could touch the floor when passing through the floor.

[0062] The preload can be designed in such a way that, for example, a torsion spring is connected to the contact body, whose unstressed position is oriented such that the contact body is oriented in the direction of travel. Alternatively, a tension spring can be connected to the contact body in such a way that the shortest length is achieved when the contact body is oriented in the direction of travel. Another alternative embodiment is to arrange a stop between the car door and the contact body. The rod is preloaded by the spring so that it presses against the brake. If the rod rests against the stop, the contact body is oriented in the direction of travel.

[0063] According to a preferred embodiment, the prestressing device is designed as an elastomeric torsion spring. Such an elastomeric torsion spring is sold, for example, by the company Rosta as a Rosta element. Such an elastomeric torsion spring serves simultaneously as a bearing element and a return spring.

[0064] According to a preferred embodiment, the first guide lintel and the second guide lintel have a common guide lintel base.

[0065] The common guide lintel base can be a separate element, such as a guide lintel carrier. The guide lintel carrier predetermines the guide distance. Preferably, the guide lintel carrier also has holes and / or threads in order to fasten the guide lintel to the guide lintel carrier and the guide lintel carrier to the shaft door.

[0066] Alternatively and preferably, the common guide lintel base can be constructed in such a way that the first guide lintel, the common guide lintel base and the second guide lintel together form a body. Preferably, they form a U-shaped profile, wherein the common guide lintel base comprises the middle part of the U-shaped profile. The U-shaped profile can be designed so that the guide spacing is fixedly adjusted and is therefore in particular non-variable. In addition, the guide lintel base can be used to fix the U-shaped profile to the shaft door, for example by screws. In addition, the guide lintel base can have an elongated hole, which allows the U-shaped profile to be simply arranged and oriented in the correct position. As a result, the contact body is located in the middle between the first guide lintel and the second guide lintel, and the guide lintel is oriented along the movement path.

[0067] According to a preferred embodiment, a connector connects the rod to the drive mechanism, and a connector connects the first end of the drive mechanism to the second end of the drive mechanism.

[0068] Therefore, on the one hand, the connector makes the annular drive mechanism enclose a closed circle, and allows the length of the drive mechanism to be matched with the spacing between the rollers at this. In addition, the connector preferably has a pin or a hole, which can realize the articulated connection with the rod.

[0069] According to a preferred embodiment, the door system has a door closing device on the shaft door, wherein the force of the door closing device is greater than the pulling force caused by the drive mechanism on the rod in order to move the contact body into the coupled position. Here, a closing weight or a closing spring can be used as the door closing device.

[0070] In other words, the drive mechanism thus moves the rod so that the contact body is placed in the coupled position. The force required for this is less than the closing force of the door closing device. Thus, it is ensured that the shaft door and the car door are not yet open when the coupled position is reached. Therefore, the still locked latch is prevented from being loaded. Thus, it is ensured that the latch can be simply moved out of engagement when the locking device is activated, i.e. opened. Once the drive mechanism continues to move the rod, the force of the drive mechanism opens through the closing force and the car door and the car door connected to the car door. If the drive mechanism has opened the car door before the locking is unlocked, at least one of the car door or the shaft door may be against the corresponding latch, so that the latch can no longer be placed in the open position due to friction. This effect can occur both on the car door latch, on the car door, or on the shaft door latch on the shaft door.

[0071] According to an alternative embodiment, the method further comprises the steps of:

[0072] After coupling and before unlocking, the door operator is reset in order to release the lock.

[0073] By relieving the locking device of the load, the locking device can be equipped with a weak, ie, cost-effective, actuator.

[0074] This is particularly advantageous if the length direction is twisted by about 90 ° from the vertical direction and the force required for this on the rod is greater than the closing force of the door closer. In this case, it is therefore ensured that the latch is not loaded and can be easily opened. BRIEF DESCRIPTION OF THE DRAWINGS

[0075] Further advantages, features and details of the invention are apparent from the following description of exemplary embodiments and from the drawings, in which identical or functionally identical elements are provided with the same reference numerals. The drawings are merely schematic and not drawn to scale.

[0076] Here:

[0077] Figure 1 The car door 21 is shown.

[0078] Figure 2 A shaft door 22 is shown which matches the car door 21.

[0079] Figure 3 Showing a horizontal section of a door coupling,

[0080] Figure 4 A view showing a door coupling in a coupled position,

[0081] Figure 5 A view showing a door coupling in a coupled position,

[0082] Figure 6 An elevator 100 is shown. DETAILED DESCRIPTION

[0083] Figure 1 1 represents a car door 21 of an elevator 100. The door system 1 is configured as a telescopically open car door 21. Here, the first car door leaf 21a opens twice as fast as the second car door leaf 21b. The first and second car door leaves 21a, 21b are guided on the threshold 3a at the lower end. In the open state, the two car door leaves 21a, 21b will be located to the right below the door drive 4. In the telescopically opened door, the mechanism that causes the first car door leaf 21a to move twice as fast as the second car door leaf 21b is not shown. A door drive 4 is mounted on the door arch 2a. The door drive 4 moves the drive mechanism 14 via rollers 5. The drive mechanism 14 is guided by two rollers 5, which are arranged at substantially opposite ends of the door arch 2a. On the one hand, the connector 15 connects the ends of the drive mechanism 14 to each other and also establishes a connection between the drive mechanism 14 and the rod 18. The rod 18 is connected to the contact body 13 in a rotationally fixed manner. Therefore, they form a unit. Here, the unit consisting of the rod 18 and the contact body 13 is supported on a support device 51 located on the base 17. Here, the base 17 is designed so that the base 17 and the rod 18 are basically vertically located above and above the first car door leaf 21a. Therefore, basically only the contact body 13 protrudes beyond the projection of the first car door leaf 21a in order to be able to connect with the opposite first car door or the first and second guide beams fixed thereto.

[0084] The first car door leaf 21a has a latch stop 34. The latch 33 of the car door locking device 31 engages in the latch stop 34 in the inactive state of the car door locking device 31. As a result, the car door 21 and in particular the first car door leaf 21a are locked. The car door locking device 31 is activated by activating the actuator 32 of the car door locking device. For this purpose, the actuator 32 can have a lifting magnet, which is energized for activation and then lifts the latch 33 out of engagement with the latch stop 34 by magnetic force. The weight of the latch or the force of a spring can serve as a counterforce.

[0085] Figure 2 A shaft door 22 is shown, which will be connected to the Figure 1 The car door 21 is arranged together in the door system 1. The door system 1 includes Figure 1 The car door 21 shown in Figure 2 The combination of the shaft door 22 matched thereto is shown in FIG. Figure 2 The components shown in Figure 1 The illustration of identical parts of the car door 21 in FIG. 1 is essentially reversed left to right, since the shaft door is shown in a view from the opposite direction.

[0086] The shaft door 22 can also be opened telescopically. The first shaft door leaf 22a and the second shaft door leaf 22b are guided along the shaft door sill 3b and the shaft door arch 2b. The shaft door locking device 41 is also designed similarly to the car door locking device. The shaft door locking device 43 engages with the shaft door locking device stop 44 in the non-activated state. The actuator 42 of the shaft door locking device can be energized in order to lift the bolt 43 out of the engagement with the bolt stop 44.

[0087] A first guide lintel 11 and a second guide lintel 12 are mounted on the first shaft door leaf 22a. The two guide lintels 11, 12 are arranged in such a way that the contact body 13 is arranged between the first guide lintel 11 and the second guide lintel 12. The contact body 13 is shown in dotted lines because it is mounted on the car door 21 and is therefore not actually visible when observing the shaft door 22. Thus, it is shown where the contact body 13 would be located if the car 7 was located on the same floor. The guide lintels 11, 12 are mounted independently of each other on the first shaft door leaf 22a. In addition, a part of the guide lintels 11, 12 is mounted vertically above the first shaft door leaf 22a. The guide lintels 11, 12 only protrude beyond the first shaft door leaf 22a to such an extent that a connection with the opposing contact body 13 can be achieved.

[0088] Figure 3 A horizontal section through an inactive door coupling is shown.

[0089] The contact body 13 is spaced apart from the guide crosspieces 11 and 12. The car can therefore pass by the floors without touching the guide crosspieces 11 or 12.

[0090] The guide lintels 11 and 12 show a preferred design. The first guide lintel 11 is connected to the second guide lintel 12 via a guide lintel base 50 .

[0091] The guide lintel base 50 of the two guide lintels 11, 12 is mounted directly on the front of the shaft door 22. In an advantageous arrangement, the guide lintel base 50 will be mounted on top of the shaft door 22 and only the guide lintels 11 and 12 will extend into the clearance between the shaft door 22 and the car door 21.

[0092] This is similar to the support device 51 of the contact body 13. The support device 51 of the contact body 13 is mounted directly on the front of the car door 21. In a more advantageous arrangement, the support device 51 is mounted on the car door 21 from above and only the contact body 13 will protrude into the gap between the shaft door 22 and the car door 21.

[0093] Figure 4 and Figure 5 The following shows in detail how the contact body 13 and the guide crosspieces 11 and 12 cooperate with each other. Figure 4 The situation of the door coupling being deactivated is shown. Thus, the elevator can be moved without the contact bodies 13 on the car door contacting the guide crosspieces 11 and 12 on the shaft door. Figure 5 The situation of an activated door coupling is shown, in which the shaft door and the car door are coupled.

[0094] The contact body has a length dimension L along the length direction and a width dimension B along the width direction.

[0095] The guide webs 11 and 12 are arranged parallel to one another at a guide web spacing D.

[0096] The rod 18 and the contact body 13 are connected to each other at the lower end of the rod 18. The support device 51 of the contact body 13 is located in the center of the contact body 13. The support device 51 is implemented in the form of an elastic torsion spring so that Figure 4 The situation shown in corresponds to the untensioned position of the elastomeric torsion spring. The lead angle α develops between the vertical and the rod 18. The upper end of the rod 18 is fixed to the connector 15. The connector 15 transmits the movement of the drive mechanism 14 to the rod 18. Preferably, the connector also holds the two ends of the drive mechanism, usually in the form of a traction rope or a toothed belt.

[0097] To activate the door coupling, the drive mechanism 14 is moved to the left by the door drive. When the door coupling is activated, the contact body contacts the guide crosspieces 11 and 12 at two contact points 16. The first contact point 16 contacts the first guide crosspiece 11 and the second contact point contacts the second guide crosspiece 12. The contact body 13 is now twisted by a coupling angle β. The coupling angle β is preferably as large as the lead angle α. Thus, the rod is Figure 5 Oriented vertically in the middle.

[0098] As soon as the door coupling is activated, the car door locking device 31 and the shaft door locking device 41 can be unlocked. In order to overcome the force of the door closing device on the shaft door 22 and open the car door 21 and the shaft door 22 together, the drive mechanism 14 moves further to the left. As a result, the force at the contact point 16 between the contact body 13 and the first guide crossbeam 11 increases and the car door 21 and the shaft door 22 open together.

[0099] The closing of the car door 21 and the shaft door 22 is carried out in the reverse order. It is advantageous here to select the motion process of the drive mechanism 14 in the following manner so that the drive mechanism is closed in the following order: Figure 5 The position shown is briefly stopped. Therefore, the car door 21 and the shaft door 22 also stop in a position where they can be locked. This achieves a quiet closing process.

[0100] Figure 6 A side view of an elevator 100 is shown. The car 7 has a car door 21 which is opposite to a shaft door 22. The control device 6 receives the signal of a position measuring device 60 which determines the position along a positioning belt 61 arranged in the shaft. The control device 6 monitors the door drive 4 and the car door locking device and the shaft door locking device. The signal on the shaft door locking device can be transmitted to the shaft door by another control device in the machine room, or directly to the shaft door, for example, by radio. The control unit 6, which is preferably arranged on the car, can also, for example, transmit the signal of the position measuring device 60 to a main control unit, for example in the machine room, or receive and execute a command from the main control device for opening or closing the door.

[0101] Finally, it should be pointed out that concepts such as "having", "comprising", etc. do not exclude other elements or steps, and concepts such as "a" or "an" do not exclude a plurality. In addition, it should be pointed out that features or steps described with reference to one of the above embodiments may also be used in combination with other features or steps of other embodiments described above. Reference numerals in the claims should not be considered as limiting.

Claims

1. A door system (1) for an elevator (100), wherein: The door system (1) comprises at least one shaft door (22), a car door (21), a car door drive (4) and a door coupling for coupling the car door (21) to the shaft door (22), wherein the car door and the shaft door are movable between an open position and a closed position, wherein: The car door (21) has an electrically activatable car door locking device (31), by means of which the car door (21) can be locked and unlocked in a closed position. The shaft door (22) has a separate, electrically activatable shaft door locking device (41), by means of which the shaft door (22) can be locked and unlocked in a closed position. The car door drive device (4) comprises a motor and a drive mechanism (14), and the car door (21) can be moved from a closed position to an open position and back by means of the drive mechanism (14). The door coupling element has a first part and a second part, the first part being arranged on the car door (21) and the second part being arranged on the shaft door (22), The second part of the door coupling element has at least one vertically oriented first guide lintel (11) protruding from the shaft door (22) and a vertically oriented second guide lintel (12) protruding from the shaft door (22), and the first guide lintel and the second guide lintel (11, 12) are arranged relative to each other at a guide lintel spacing, The first part of the door coupling member comprises a contact body (13) on the car door (21), wherein the contact body (13) has a length dimension (L) along the length direction that is larger than the guide beam spacing (D), and the contact body (13) has a width dimension (B) along the width direction that is smaller than the guide beam spacing (D), The contact body (13) is rotatably arranged on the car door (21) between the first guide crossbeam (11) and the second guide crossbeam (12). It is characterized in that The rod (18) is connected to the drive mechanism (14) and the rod (18) is connected to the contact body (13) in a rotationally fixed manner. The contact body (13) is enabled to rotate from a disconnected position to a connected position by means of the movement of a drive mechanism (14), in which the contact body is arranged with clearance between the first guide beam and the second guide beam based on the width dimension, and in the connected position, the contact body contacts the first guide beam and the second guide beam.

2. The door system (1) according to claim 1, characterized in that The car door (21) has at least one first car door leaf (21a), and The shaft door (22) has at least one first shaft door leaf (22a).

3. The door system (1) according to claim 1 or 2, characterized in that The contact body (13), the first guide web (11) and the second guide web (12) are arranged above a car door (21) and / or above a shaft door (22).

4. Door system (1) according to any one of the preceding claims, characterized in that The door system (1) has a pretensioning device which applies a pretensioning force to the contact body (13) in the direction of the disconnection orientation.

5. The door system (1) according to claim 4, characterized in that The preload device is designed as an elastomeric torsion spring.

6. Door system (1) according to any one of the preceding claims, characterized in that The first guide lintel (11) and the second guide lintel (12) have a common guide lintel base (50).

7. Door system (1) according to any one of the preceding claims, characterized in that The driving mechanism (14) is designed as a driving mechanism (14) capable of rotating around the first roller (5) and the second roller (5), and preferably, the first roller is driven by the door driving device.

8. The door system (1) according to claim 7, characterized in that The connector (15) connects the rod (18) with the drive mechanism (14), and the connector (15) connects the first end of the drive mechanism (14) with the second end of the drive mechanism (14).

9. Door system (1) according to any one of the preceding claims, characterized in that The door system (1) has a door closing device on a shaft door (22), wherein the force of the door closing device is greater than the tensile force of a pull rope acting on a rod (18) in order to move a contact body (13) into a coupled position.

10. Door system (1) according to any one of the preceding claims 2 to 9, characterized in that The car door (21) has a second car door leaf (21b), and The shaft door (22) has a second shaft door leaf (22b), The first door coupling member couples the first car door leaf (21a) to the first shaft door leaf (22a), and in particular, the second door coupling member couples the second car door leaf (21b) to the second shaft door leaf (22b).

11. An elevator (100) comprising a door system (1) according to any one of the preceding claims, characterized in that: The elevator (100) comprises a position measuring device (60), a car (7) and a control device (6), wherein the position measuring device (60) detects the position of the car and the control device (6) evaluates the position and controls the opening and closing of the door system (1).

12. A method for operating an elevator (100) according to claim 11, comprising the following steps: The car door (21) is coupled to the shaft door (22) in that the car door drive (4) moves the drive mechanism (14) by a first distance in the opening direction and thereby rotates the contact body (13) until the door coupling is coupled. The car door (21) and the shaft door (22a) are unlocked by sending electrical signals to the car door locking device (31) and the shaft door locking device (41). The shaft door (22) is opened by: the car door drive (4) causes the drive mechanism (14) to move a second section in the opening direction and thereby drives the shaft door (22).

13. The method according to claim 12, further comprising the steps of: After coupling and before unlocking, the door operator (4) is reset in order to relieve the locking element from load.

14. The method according to claim 12 or 13, further comprising the steps of: The car door (21) and the shaft door (22) are closed.

15. The method according to claims 12 to 14, further comprising the steps of: The car door (21) is closed by: the car door drive device (4) causes the drive mechanism (14) to move a third distance in a closing direction until the first car door (21) is closed; Locking the car door (21) and the shaft door (22), and The door coupling member is disconnected in such a manner that the car door drive device (4) causes the drive mechanism (14) to move a fourth distance in a closing direction.

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