DE202006010217U1 - Door closure for the shaft door of a lift comprises a blocking unit acting directly or indirectly on a locking bolt to block the bolt in its locking position - Google Patents

Abstract

Door closure (1) comprises a blocking unit (10) acting directly or indirectly on a locking bolt to block the bolt in its locking position. Preferred Features: The blocking unit acts with a blocking mechanism (11) on the locking bolt and/or on a coupling mechanism (4, 7). The coupling mechanism has a toothed lever formed as an angled lever which acts directly on the locking bolt.

Description

The The invention relates to a door lock, in particular a landing door a lift, with a housing and with a bar, which in relation to a Door in a locking position and in a release position and transferred in the case is stored, wherein a cooperating with the latch coupling mechanism provided by an external device under transfer of the Bolt from its locking position to its release position actuated is.

It However, it has been shown to be variously unauthorized People are trying to open an elevator door by improper actions and to gain access to the elevator shaft. This leads to a considerable danger of these persons. Sometimes people try to by the external device, e.g. an elevator car, operated coupling mechanism to manipulate to open a shaft door. It is thus the Desire, the accessibility the elevator shaft to a proper operation of the elevator to restrict. These would be activities conceivable as the accessibility complicate the coupling device, but this would interfere with condition the functioning of the elevator system as a whole. Further it is possible, to install additional door locks on the shaft door, which also makes access to the elevator shaft difficult would. However, this requires a lot of effort and is also suitable for retrofitting lifts little suitable.

Furthermore In some cases there are also legal provisions according to which it is generally impossible must be an elevator door to open, if there is not an elevator car behind it. on the other hand it must be possible for authorized persons at any time, regardless of the cabin position to open the shaft doors using emergency release key to For example, to free trapped persons, so that from a secure location, such as the control room of the Elevator, all elevator doors by operation a corresponding switch should be unlocked. The door lock should therefore be adapted in a special way to this legal Comply with regulations or at least as simple as possible Way convertible to meet these requirements.

Of the Invention is therefore the object of a door lock to create, adapted in a special way to an elevator system or It is customizable which unauthorized persons have access to the elevator shaft and by means of which the above-mentioned legal provisions Fulfills or by simple retooling the elevator system can be fulfilled are.

The Task is followed by a door lock Claim 1 solved, in which according to the invention a mediate or blocking device acting directly on the latch of the bolt is provided in its locking position. Preferably is the locking device in normal operation depending on the actual Positioning of the external device such as the cab of the door lock operable associated elevator forth, especially preferred only from this. In addition to this, the locking device from a secure location such as the control room be assigned to the associated elevator forth, for example for maintenance or in case of emergancy. The locking device can thus not be bypassed that the coupling mechanism operated by the external device is unauthorized actuated becomes. The blocking member preferably acts positively on the component to be blocked, possibly also frictionally. The locking device can be actuated by electrical means, preferably only by this, so that mechanical manipulations for the unauthorized unlocking of the door lock, as often using screwdrivers, wires, Ropes or the like are tried are not possible. It goes without saying that the door lock according to the invention can also be used with other transport or conveying devices is.

Preferably the locking device acts directly on a locking device the bolt and / or arranged in the door lock housing Coupling mechanism used with an external device such as an elevator car or other means of transport, to transfer the latch from the locking to the release position can. For this purpose, on the external device, a driver or actuator be attached, which acts on the coupling mechanism. The driver can be placed directly on the cabin or e.g. at a fixed or variable position Set up the same as an extendable latch curve attached be. At the coupling mechanism, a coupling element such as a Contact roller be attached. The blocking element can also be on a commonly provided Pull rod act as part of the coupling mechanism, which with may be coupled to an angle lever, preferably directly acts on the latch.

It has proved to be particularly favorable when the blocking member for blocking the bolt acts on a toothed lever provided on the coupling mechanism, which is usually designed as an angle lever. The rotational movement of the gear lever is under particularly favorable power conditions lockable, for example, when a locking member engages at least substantially tangentially to a radially projecting from the pivot axis of the angle lever driver as a coupling member. The forces acting thereby on the locking member forces against blocking an intended operation of the bolt can be collected particularly favorable from the abutment of the locking member. The locking member may generally be designed as an angle lever, but also as a simple lever, wherein the articulation point of the lever can be arranged facing away from the component to be locked, in particular the toothed lever. The lever or angle lever is in this case changed position by an actuating element to be transferred to its blocking position. The actuating element can in this case act on the leg of the angle lever, which is located between the Winkelhebelanlenkung and the component to be locked, for example, the toothed lever or bolt. Optionally, the actuating element of the locking device can also act on the leg of the angle lever, which faces away from the component to be locked with respect to the articulation of the angle lever.

By the provision of the angle lever as a locking member is the locking device with little effort different conditions, such as different Actuators customizable. For example, the locking device by a Electromagnet operated be, preferably directly on the locking member or the actuator the same effect. The operation the locking device by an electromagnet has the advantage that the blocking device can be controlled by a controller, whereby the control adapted to the most different requirements and also in a secure location, such as the control room the elevator system, can be arranged. The electromagnet can in this case in the blocking position of the blocking member energized or preferably be de-energized, so that, for example, in disorders of Control or power failure, the locking device in its locked position is.

To Alternatively, the locking device is preferably arranged in the door lock housing, so that these are protected from external intrusions protected is.

alternative the locking device can also be arranged outside the door lock housing, for example, due to the space required. For this can in the door lock housing a Housing opening provided, through which the locking member can pass through to be blocked on the Element of the door lock, For example, latch, gear lever or a part of the coupling mechanism such as. to work the drawbar. Alternatively, a the Door lock housing sweeping Coupling, on which the locking member can attack provided be. The locking device, optionally with associated housing, is then at a suitable location outside the door lock to arrange. Here, the locking device on the door lock housing itself be attached but also on another component, such as the door lock associated door frame, a neighboring wall, etc., so that at least when closed Door the Locking device on the locking element of the door lock can work.

A particularly advantageous embodiment is when on the toothed lever coaxial with its pivot axis one outside the door latch premier renewal is mounted, wherein the locking member outside of the door lock housing on the extension itself or acting on a coupling element acting on this. For example, the extension in the manner of an extension rod be formed, which can also be made of a profile tube, which also serve to produce an emergency release key associated with the door lock can, i. mostly a triangular profile. Extension and emergency release key can thus where appropriate, on the same coupling organ of the door lock attack, the extension can this in their length the be adapted to the respective requirements. Preferably, the Coupling of the locking device or the extension thus releasably on the door lock attached. It may be at the extension Also, a coupling member such as a locking disc or the like arranged be, to which the locking member of the locking device attack locking can be an overpass of the Riegel to prevent his release. The extension arranged coupling member may radially and / or axially from the extension protrude. The coupling member may, for example, a receptacle for the barrier organ to be locked thereby. Coupling and locking disc are preferably each rotationally fixed. The extension can in this case on a pin of the pivot axis of the toothed lever coupled or attached, to which a standard emergency release key to couple can.

Particularly preferably, the locking device is controlled by a control which is designed such that during normal operation of the elevator, the locking device is only in unlocked position, if a car associated with a lift, or according to another conveyor, in the intended position behind the door lock Shaft door is arranged. Is an elevator car in contrast not in the waiting state behind the door lock assigned shaft door arranged or not in its intended position, so in normal operation of the elevator, the locking device is always in its locked position. Preferably, a sensor is provided for this purpose, which emits a signal when an elevator car is arranged in the intended position behind the shaft door associated with the door lock and the bolt can be unlocked as intended. In normal operation of the elevator is thus exclusively on delivery of a signal from the sensor, which indicates proper positioning of the elevator car to the shaft door, the Sperrein direction transferred to its unlocked position. The signal output of the sensor can be a necessary or sufficient condition for the unlocking and thus also depend on further operating parameters of the elevator. The controller may be identical to the elevator controller or may be a separate controller. The controller is preferably arranged at a secure location, for example the control room of the elevator. Optionally, the sensor can also deliver the signal directly to the locking device. The locking device further preferably has an electrical actuating device such as an electromagnet or electric motor, which actuates the locking member directly or indirectly.

To previous suspension of the blocking position of the locking device by authorized persons, a manual emergency release can be attached to the door latch carried out become. Eventually, the locking device can also by pressing the Emergency release of the door lock be convertible to their unlocked position. As an emergency release, for example, as a on the Verschwenkachsae the toothed lever arranged coupling member, for example as axial projecting pin, be provided by an emergency release such one for this usually provided triangular key actuated is.

alternative or additionally For example, the locking device may be coupled to an emergency unlock control and by this means of an emergency control independent of the sensor signal actuated and be convertible to their unlocked position. Through this emergency control can the locking devices of individual or all door locks of the elevator system in their Unlocking be transferred, making the elevator shaft accessible becomes. The emergency control can be arranged in a secure location and may be part of the elevator control. Preferably, an emergency release exclusively by a controller, in particular electrical control, i. not through direct mechanical attack on the door lock e.g. by means of a Notentrieglungsschlüssels, possible.

Of the the intended positioning of the Lifting cabin detecting sensor can be designed in many ways, for example as optical sensor, as a light barrier, as a magnetic sensor, the sensitively reacting to an element attached to the elevator car, optoelectronic sensor, mechanical sensor or other suitable Sensor. That for The sensor sensitive element can be directly attached to an area of Elevator cabin be arranged, optionally also on an additional device the elevator car, which may also be variable in position, such as a lock curve of the cabin, as is usually used to operate a Driver such as e.g. a contact role is provided to get on with the latch associated coupling mechanism of the door lock to act. The latch curve is hereby only extended when the elevator car for it is determined to stop behind a selected door, but not in cabins, which only drive past the door. The variable position Facility can change the location be controlled by the controller. It can also be alternative to the latch curve another means may be provided, the their location or state changes, if the elevator car for that is determined to stop at a predetermined shaft door, which is the door lock assigned.

The signal received from the sensor indicating that a car their intended position has reached to unlock the locking device, and / or that from the sensor to the controller and / or directly to the barrier device output signal can be coded in a suitable manner to incorrect operations and in particular to make it difficult for third parties to intervene. The coding can be done by signal modulation. The coding can also be in dependence be carried out by the respective cabins, so that the sensor or The controller can detect whether a particular one of several cabins behind the door lock associated door is arranged.

The Control can be carried out in this way be that the unlocking of the locking device takes place only if one or more of a plurality of Cabins on one of the respective door lock associated shaft door in her arranged according to the intended position is / are.

Optionally, the sensor can alternatively or additionally detect other parameters of the elevator cars in addition to the position, in order to deliver a signal to the control and / or the blocking device in order to transfer these into an unlocking position. For example, the sensor can also detect the speed of the elevator, so that an unlocking does not take place when the elevator car is still moving at a certain speed, when behind the respective Türver end associated with the door is arranged.

Possibly can the intended position the cabin, by means of the control to unlock the locking device leads, also be detected by means of a control device. The control device for example, from the movements or state changes the cab's drive means the actual cabin position and if necessary, also determine other parameters such as the cabin speed and e.g. executed as a path decoder be.

The Invention will be described below by way of example and with reference to the Figures exemplified. Show it:

1 a door lock of a first embodiment with locking device in the locked position,

2 a door lock after 1 with locking device in unlocked position

3 a door closure of a modified embodiment according to 1 with locking device in unlocked position,

4 a door closure of another embodiment with locking device in blocking position,

5 a door closure of a modified embodiment according to 4 .

6 a door closure of another embodiment with locking device arranged outside the door lock housing in the locked position,

7 a door lock after 6 with locking device in unlocked position

1 shows a schematic representation of a door lock 1 , in particular for a shaft door of a lift, with a housing 2 and a bolt stored in it 3 which is in relation to a door in a locking position ( 1 ) and a release order ( 2 ) is convertible. Further, one is with the latch 2 cooperating clutch mechanism provided, which is designed as an angle lever toothed bar 4 with a toothing 5 may have, which on the pivot axis 6 is mounted rotatably and by an indirectly or preferably directly on this attacking tie rod 7 in at least two pivoting positions can be converted, which a release position and a locking position of the bolt 3 assigned. The coupling mechanism, if necessary, the drawbar 7 Immediately, are by an external device, eg an elevator car 19 , operable when the external device enters its desired position or is at least almost in this. The coupling mechanism may for this purpose have a trained example as a contact roller driver with the cab 19 or a part of the same, for example, a variable-position latch curve, can cooperate to a change in position of the toothed lever 4 and / or the bolt 3 to effect.

In order to prevent unauthorized opening of the locked shaft door and thus an unauthorized intrusion into the hoistway or generally the operating room of a transport or conveyor safely, is a locking device 10 provided, which one by an electromagnet 11 operable locking lever 12 has, by means of which the bolt can be locked in its locked position. According to the embodiment, the pivot axis 6 of the toothed lever 4 radially as a circle element 14 extended and at this a radially projecting organ 13 rotatably arranged in the form of a cam, to which the locking lever 12 attacks the pivoting of the toothed lever 4 to lock. Here is the blocking leg 15 of the locking lever 12 substantially tangential to the outer periphery of the pivot axis 6 or the circle element 14 arranged so that by the arrangement of the locking leg 15 adjacent or adjacent to the toothed lever 4 a pivoting of the toothed lever 4 in cooperation with the organ 13 is blocked. Because of the toothed lever 4 directly or indirectly with the bar 3 cooperates, the bolt is blocked in its locked position.

The locking lever 12 is designed here as an angle lever, so that the locking leg 15 between the pivot axis 16 and the actuator of the locking lever, the electromagnet 11 , is arranged. In locking position of the locking lever 12 is after the example of the electromagnet 11 de-energized, with current-carrying electromagnets 11 the locking lever is transferred to its unlocked position ( 2 ), so that under operation of the coupling mechanism such as the drawbar 7 the toothed lever 4 swiveling and thus the bolt 2 can be converted into its release position.

The electromagnet 11 or optionally also another actuator is here by a controller 17 controlled, which with a sensor 18 is coupled signal transmitting. The sensor 18 is designed to the intended arrangement of an elevator car 19 in its nominal position behind the door lock 1 assigned shaft door, wherein at the cabin 19 an element 20 may be arranged, on which the sensor 18 is sensitive. The sensor 18 In particular, an optical, magnetic, electro-optical or me be a chanic sensor. The element 20 in particular, on an extendable latch curve 21 be arranged, which extends into an active position when the car anfährt the selected each by an operator shaft door to interact with an actuating element such as a contact roller and with the latch 3 to actuate connected coupling mechanism. If appropriate, the element can also be arranged on another suitable position-variable device of the cabin.

The sensor is further designed such that in passive position of the latch curve or position-adjustable device of the cabin 19 , a signal is not generated. The passive position of the locking curve is present, for example, when the car passes only on a shaft door.

That of the sensor 18 generated signal is sent to the controller 17 or optionally also transmitted directly to the barrier device. The control 17 then actuates the actuator, eg electromagnet 11 , the locking device to the bolt 3 to unlock directly or indirectly, so that it is transferred to its release position. According to the embodiment, this is the locking lever by the current-carrying electromagnet in his in 2 transferred shown unlock position.

Preferably, element 20 and sensor 18 arranged and matched to one another such that the unlocking of the locking device in time the operation of the coupling mechanism for pivoting the toothed lever 4 or is generally preceded by the transfer of the bolt in its release position or practically carried out at the same time, which may apply generally according to the invention. Preferably, the timing is such that the leadership of the bolt is performed in its release position in time immediately after, when the locking device is in its unlocked position.

Furthermore, the controller has 17 a control 22 to, regardless of an output signal from the sensor 18 the locking device 10 to be able to unlock. This is necessary, for example, in an emergency, to allow access to the shaft through the shaft door associated with the door lock. Optionally, by the operating element 22 one, several or all of the locking devices of the arranged in a slot door locks are operated, which can be done simultaneously or based on a selected door lock. General is the controller 17 arranged here in a control room, which is secured against entry by strangers.

The embodiment according to 3 differs by the design of the locking device of the after 1 Incidentally, the closures are made identical. The same parts are provided with the same reference numbers. As well as after 1 the locking lever is designed as an angle lever. In contrast, the actuator or electromagnet acts 11 on the thigh 25 of the locking lever, that of the locking lever 15 is different. In the de-energized state of the electromagnet 11 is the locking lever 12 in its unlock position ( 3 ). The arrangement of the electromagnet 11 can thus be adapted to the respective space conditions. It is understood that according to both embodiments in the illustrated state of the locking device, the electric motor can also be reversed energized or de-energized, for example, in which the compression spring 26 each on the locking lever 12 opposite side of the electromagnet is arranged and on the axis 27 acts.

In the embodiment according to 4 is the barrier device 30 outside the door lock housing 2 arranged. Furthermore, regardless of this, the blocking device acts 30 immediately on the bar 3 , In 4 the locking device is shown in its locked state. The barrier organ 31 passes through a housing opening 32 , The locking member can in this case engage in a recess of the bolt or engage behind the end region of the bolt and this, for example, in the bolt bearing bearing bore 33 intervention. The locking device 30 can be attached to a bracket 34 be set, which on the door lock housing 2 or another device such as a door frame may be attached, and optionally in an additional housing 37 be arranged. The electromagnet 35 The locking device can here, as in all other embodiments of the invention, be designed such that the locking device 30 with energized or de-energized electromagnets 35 in its blocking position, including the compression spring 36 at the gate 31 facing or facing away from this side of the electromagnet 35 can be arranged (according to also 5 ).

The 6 and 7 show a further embodiment of the door lock according to the invention with outside the door housing 1 arranged locking device 40 , In contrast to 1 (Otherwise, the same components are provided with the same reference numerals) is for coupling the locking device to the latch on the toothed lever acting on this 4 a coupling provided here as a coaxial extension of the pivot axis 6 the toothed lever is formed. The coupling 41 can in this case in one of the pivot axis 6 Ankoppeln attached organ to which also an emergency release key for Entrie gelocking of the door lock can be coupled in an emergency, for example on a triangular pin. The coupling can thus consist of a corresponding triangular hollow profile, as it is otherwise used to produce a Notentriegelungsschlüssels. To the blocking attack of the locking device or the blocking member 42 at the clutch 41 To facilitate, is designed as a locking disc coupling element 44 provided, which is a recess 45 has, in which the locking member 42 can intervene. It is understood that the coupling element 44 if provided, and the coupling 41 in each case rotationally against each other or on the pivot axis 6 attack. For actuating the blocking member 40 is again an electromagnet 11 provided, which is in de-energized or energized state, when the locking device is in its locked state.

It is understood that arrangement and design of other facilities such as control 17 , Sensor 18 , Element 20 etc., as in them in 1 are described, may also apply to the other embodiments or for other embodiments of the door lock according to the invention in general.

1

door lock

2

casing

3

bars

4

tooth lever

5

gearing

6

pivot

7

pull bar

10

locking device

11

electromagnet

12

locking lever

13

organ

14

circular element

15

blocking leg

16

pivot

17

control

18

sensor

19

cabin

20

element

21

retiring cam

22

operating element

25

leg

26

compression spring

27

axis

30

locking device

31

blocking member

32

housing opening

33

bearing bore

34

bracket

35

electromagnet

36

compression spring

37

additional housing

40

locking device

41

clutch

42

blocking member

44

coupling member

45

recess

Claims (20)

Door lock, in particular a shaft door of a lift, with a housing ( 2 ) and with a latch, which can be moved with respect to a door in a locking position and in a release position and in the housing ( 2 ), one with the bolt ( 3 ) cooperating coupling mechanism ( 4 . 7 ) provided by an external device with the bar ( 3 ) can be actuated from its locking position into its release position, characterized in that an indirectly or directly on the bolt ( 3 ) acting locking device ( 10 ) to lock the bolt ( 3 ) is provided in its locking position. Door lock according to claim 1, characterized in that the locking device ( 10 ) with a blocking element ( 11 ) on the bar ( 3 ) and / or the coupling mechanism ( 4 . 7 ) acts. Door closure according to claim 1 or 2, characterized in that the coupling mechanism ( 4 . 7 ) a preferably designed as an angle lever tooth lever ( 4 ), which preferably has a toothing directly on the bolt ( 3 ) acts, and that the locking member ( 11 ) of the locking device ( 10 ) to lock the bolt ( 3 ) acts on the toothed lever. Door lock according to claim 3, characterized in that the locking member ( 11 ) of the locking device ( 10 ) on a on the pivot axis of the toothed lever ( 4 ) arranged coupling element ( 13 ) acts to lock the bolt ( 3 ) to lock. Door closure according to one of claims 1 to 4, characterized in that the coupling mechanism ( 4 . 7 ) a preferably designed as an angle lever tooth lever ( 4 ), which preferably directly on the bolt ( 3 ) and the via a linkage ( 7 ) is operable by the external device, and that the blocking member ( 11 ) of the locking device ( 10 ) to lock the bolt ( 3 ) on the linkage ( 7 ) acts. Door lock according to one of claims 1 to 5, characterized in that the locking member ( 11 ) is designed as an angle lever and that the leg ( 15 ) thereof, which between the pivot axis ( 6 ) of the angle lever and on this acting actuator ( 27 ) arranged legs of the angle lever, or that the leg ( 25 ), which in relation to the actuating element ( 27 ) from the pivot axis ( 6 ) is arranged at the side, indirectly or directly as a blocking element ( 11 ) acts or on the blocking member ( 11 ) acts. Door lock according to one of claims 1 to 6, characterized in that the locking device ( 10 ) by an electrical actuator ( 11 ) is actuated, which preferably directly on the locking member ( 11 ) acts. Door closure according to claim 7, characterized in that the actuating device ( 11 ) in the blocking position of the blocking member ( 15 ) is de-energized or energized. Door lock according to one of claims 1 to 8, characterized in that the locking device ( 10 ) in the door lock housing ( 2 ) is arranged. Door lock according to one of claims 1 to 8, characterized in that the locking device ( 10 ) is arranged outside the door lock housing. Door lock according to claim 10, characterized in that the locking member ( 11 ) in its blocking position directly on the bolt ( 3 ) acts and in blocking position a housing opening ( 32 ). Door lock according to claim 10, characterized in that a coupling leading outside the door lock housing is provided and that the locking member ( 11 ) of the locking device ( 10 ) outside the door lock housing ( 2 ) on the coupling ( 41 ) or acting on a directly or indirectly engaging this coupling member. Door closure according to claim 12, characterized in that the coupling ( 41 ) as coaxial with the pivot axis ( 6 ) of the toothed lever ( 4 ) arranged extension is formed. Door lock according to one of claims 10 to 13, characterized in that the arranged outside the door lock housing locking device ( 10 ) and / or the blocking member ( 11 ) in an additional housing ( 37 ), which on the door lock housing ( 2 ) can be fastened or attached. Door closure according to one of claims 1 to 14, characterized in that a control ( 17 ) for controlling the locking device ( 10 ) is provided, which is designed such that during normal operation of the elevator, the locking device ( 10 ) upon receipt of a signal from an associated sensor ( 18 ) or a control device in the unlocked position, wherein the signal is emitted when an elevator car ( 19 ) of an associated elevator is arranged at least approximately in the intended position behind the shaft door associated with the door lock. Door lock according to claim 15, characterized in that the sensor ( 18 ) Position and / or speed of the elevator car ( 19 ) to output a signal indicating that the elevator car ( 19 ) is arranged as intended behind a shaft door of the elevator. Door closure according to claim 15 or 16, characterized in that the sensor ( 18 ) the position of an arranged on the elevator car actuator ( 21 ), which is preferably extendible, and which with the coupling mechanism ( 4 . 7 ) for actuating the bolt ( 3 ) cooperates to control the positioning of the elevator car ( 19 ) behind a shaft door of the elevator. Door lock according to one of claims 15 to 17, characterized in that the sensor ( 18 ) send a signal to the controller ( 17 ) when the elevator cabin ( 19 ) is arranged as intended behind the shaft door, from which by an operator the elevator car ( 19 ) was requested. Door lock according to one of claims 1 to 18, characterized in that the locking device ( 10 ) of one or more door locks by an emergency release in unlocked position can be transferred. door lock according to one of the claims 15 to 19, characterized in that the emergency release on the Control is arranged or integrated in this.