ES2364708T3 - EMERGENCY UNLOCK. - Google Patents

Abstract

Emergency unlocking of a door lock by means of which said door lock can be carried from a locked position to an unlocked position by means of an emergency unlock key (7), presenting or being able to associate said emergency unlocking with a mechanism towing (6) disposed in a housing and which can be operated by means of the emergency unlocking key by moving the door lock to its unlocked position, for which the emergency unlocking key must be inserted into an opening of the housing for coupling it with the drive mechanism, a closing element (12) being provided that closes in its closing position (11), at least partially, in order to prevent the introduction of the emergency release key ( 7) to engage it in the drive mechanism (6), and which in an open position allows the introduction of the emergency release key (7), and a control organ (13) being provided, characterized in that the control organ, by means of the application of the emergency unlocking key (7), can be moved to a control position in which it, acting directly or indirectly on the closing element (12), passes the closing element (12) to its opening position.

Description

[0001] The invention relates to an emergency unlocking for a door lock, in particular a box door of an elevator, by means of which said door lock can be brought from a locked position to an unlocked position by an emergency unlocking key, presenting or being able to associate the emergency unlocking with a dragging mechanism that is arranged in a housing and that can be operated by the emergency unlocking key by moving the door lock to its unlocked position, for which the emergency release key must be inserted into an opening of the housing to couple it with the drive mechanism.

[0002] These emergency unlocks for door locks, in particular in the case of public access elevators, are often exposed to intentional deterioration or attempted unauthorized intervention in the elevator's operating state or at the machine or elevator protected by the door lock. Frequently attempts are made to access the elevator by means of the most diverse objects, such as screwdrivers, knives, wires or the like, or also to deteriorate the door lock in such a way that subsequent authorized access is hindered or prevented, for example by the introduction of adhesives In the lock.

[0003] To prevent unwanted manipulation of the door lock, EP 1441091 A2 has already disclosed a door lock with emergency release, in which an additional locking means is provided that interlocks a drag mechanism ( operated by means of the emergency unlocking key) of the emergency unlocking when the drive mechanism is in its neutral position that allows normal machine or elevator service. However, by means of a door lock of this type, all actions of external origin cannot be safely avoided, especially taking into account the requirements currently imposed on door locks, as required for example in DIN EN 81-71.

[0004] WO 2006/119222 A 2 describes a padlock with a protective sheath that serves to protect the lock mechanism of the padlock against moisture ingress and, consequently, against corrosion. To this end, the protection cover has a key fit that is covered by two sliding elements arranged in a housing part rotatably housed to thus allow a rotation of the housing part in case of a turning movement of the key.

[0005] US 2004/173415 A1 also discloses an emergency unlocking of door locks according to the preamble of claims 1 and 15.

[0006] Therefore, the aim of the invention is to create a device that increases protection against tampering in the door lock, in particular in its emergency unlocking device, by unauthorized persons.

[0007] The object of the invention is solved by an emergency release according to claim 1, in which a closing element is provided which in its closed position closes the housing opening, at least partially, in order to prevent the introduction of the corresponding emergency unlocking key for coupling it to a drag mechanism that activates the emergency unlocking, and which in an open position allows the introduction of the emergency unlocking key. A control organ is also provided that, by applying the emergency release key, can be moved to a control position in which the latter, acting directly or indirectly on the closing element, passes the closing element to its position. opening. Therefore, by this arrangement of the closing element, an unauthorized intervention in the emergency unlocking mechanism to be operated to open the door lock is further hindered. Here virtually no foreign object, such as a screwdriver, wire or the like, can be introduced into the housing, so that damage to the door lock is also avoided. On the other hand, by means of an actuation of the control unit by means of the emergency unlocking key, an authorized emergency unlocking operation is still possible in a simple way. The closing element is preferably configured in such a way that it completely covers and closes, especially preferably without any cracks or, at least, essentially without cracks, the housing opening for introducing the emergency unlocking key into the interior of the Case. This also makes it impossible to introduce fine foreign objects, for example wires. The closing of the carcass opening by means of the closing element can also take place in particular essentially hermetically, so that the entry of pasty or liquid foreign substances, such as adhesives, water, acids or the like, or these, is also prevented they cannot cause any damage that impairs operation.

[0008] The emergency unlocking of a door lock according to the invention can be configured in particular as an emergency unlocking of a box door of an elevator.

[0009] To facilitate the operation of the emergency release, the control element may be arranged in front of the closing element in relation to the introduction of the emergency release key in the housing. In this way, first of all the control element can be operated by means of the emergency unlocking key and passing the closing element to its opening position, then coupling the emergency unlocking key in the unlocking drag mechanism emergency in order to move the door lock to its unlocked position. Emergency unlocking is preferably carried out in such a way that after actuating the control unit it is not necessary to remove the emergency unlocking key from the emergency unblocking in general, or from the control organ in particular, to engage the key in the mechanism of drag. The coupling of the emergency release key in the drive mechanism can preferably take place in such a way that, after actuating the control element, the key is further inserted into the housing opening. For this purpose, the emergency unlocking mechanism can be arranged behind the control element in relation to the direction of insertion of the emergency unlocking key into the housing.

[0010] By means of a configuration of the control element in the form of a rotating disk housed, an especially simple operation of the emergency release is possible. The axis of rotation of the control element or of the control disk can be arranged in a parallel or preferably coaxial direction with respect to the axis of rotation of the emergency unlocking drive mechanism, in which the emergency unlocking key is to be coupled. . For actuation of the closing element, the control element can be configured in general so that it can rotate in the same direction or in the opposite direction to the emergency release drive mechanism, preferably so that it can optionally rotate in the same direction. or in the opposite direction to the emergency release dragging mechanism, to move the closing element to its opening position.

[0011] Preferably, the control element has a passage opening for the emergency unlocking key in order to be able to engage this in the emergency unlocking drive mechanism after having passed it through the control element or the disk of command and of activating the closing element. The passage area of the control element can simultaneously be used to engage the emergency release key to operate the control element. The passage opening of the interlocking member can generally be arranged in the cross-sectional area of the housing opening. The passage opening of the interlocking member bearing may generally be arranged in the cross-sectional area of the housing opening, preferably congruently with respect thereto. If necessary, the control element can also be configured as a sliding organ, so that by moving it using the emergency release key, the closing element is passed to its opening position. Thus, the place of intervention of the emergency unlocking key in the control organ can be located independently of the place of the emergency unlocking drag mechanism.

[0012] Preferably, the control element, in particular when it is configured as a rotating disk housed disk, is housed in a control element bearing, which is in turn housed in a mobile manner, in particular in a rotating manner, With respect to the housing. If a relative movement of the control member with respect to the control organ bearing is prevented, for example through an unauthorized union of the two components by means of adhesives or other means, the control organ bearing can be moved with respect to the emergency unlocking housing, preferably in such a way that the emergency unlocking key can be coupled to the emergency unlocking drive mechanism. Thus, a relative movement of the control member with respect to the housing is also possible by movement of the control organ bearing.

[0013] The control organ can act directly on the closing element by means of a dragging mechanism, if necessary also by means of a suitable coupling mechanism.

[0014] The passage opening of the control element for the emergency release key can be configured to accommodate the key with a precise adjustment. In addition, the housing can be adapted to the outer perimeter of the key in such a way that the housing of the control organ rests on said outer perimeter of the key without clearance throughout the perimeter and if necessary also without cracks. The key may have a constant cross-sectional stem, for example in the form of a usual triangular key with housing at the end for the emergency release drive mechanism. In combination with this or independently, the closing element that acts as a stop can limit the introduction of the emergency release key in the housing of the control element.

[0015] The closing element may be made as a ratchet organ.

[0016] The closing element can be rotatably housed, the oscillation axis of the closing element can be arranged eccentrically with respect to the axis of rotation of the control element. The oscillation axis of the closing element can be arranged outside the cross-sectional area of the control element in relation to the direction of introduction of the emergency release key in the housing. In such a configuration of the emergency release, but also generally independently of it, the control element and the closing element can be configured such that the control element can act on the closing element regardless of the direction of Turn the emergency release key to move the closing element to its open position. For this purpose, one or more eccentrically driven driving mechanisms can be arranged in a control member configured as a control disk, which can act on the closing element in the two directions of rotation of the control element about its axis of rotation, the point of application of the drive mechanism being arranged in the closing element in an eccentric position in each case with respect to its axis of rotation, so that the closing element can be passed from its closing position to its opening position.

[0017] In order to move the closing element from its opening position to its closing position, a return member can be provided that acts on it, for example in the form of a return spring that acts on the closing element.

[0018] In addition, preferably an interlocking device is provided which in its interlocking position locks the control element and / or the closing element. Therefore, by means of the interlocking device, the actuation of the control element or the passage of the closing element to its opening position is prevented. The closure element is preferably locked in its closed position. The interlocking device can be unlocked, and if necessary be brought back to its interlocking position, through an external device that can be provided in the control cabinet of the machine or elevator in question or in a special control space , through a corresponding action of an operator instructed and authorized to do so. The interlocking device may in particular have an electromagnet whose armature serves directly as an interlocking organ or acts on an interlocking organ through a transmission mechanism or by means of an extension. The interlocking device can interlock when current passes through the electromagnet or when it is out of current.

[0019] Preferably, the housing containing the closure element is arranged as a supplementary housing on the door lock housing containing the emergency release drive mechanism. In this way, the existing door lock housings can be modified especially easily by configuring the emergency release according to the invention.

[0020] The supplementary housing can be fixed in a door lock housing in such a way that the two housing openings overlapped with each other are arranged coaxially or congruent with each other, such that, after actuating the control element provided in the supplementary housing, the emergency unlocking key can be coupled by a linear displacement in the emergency unlocking drive mechanism disposed in the door lock housing. The attachment of the supplementary housing can be carried out in particular through detachable fixing means, preferably through special fixing means, such as special screws, which cannot be loosened with the usual tools. The fixing means can also be secured through means that can only be removed by destroying them. For this, the outer housing of the fixing means can be closed by a plug or the like, which can only be removed by destroying it. However, alternatively, the control element with closing element can be arranged directly in the door lock housing.

[0021] The invention is described below by way of example and explained by way of example with reference to the figures. In the drawings:

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 Figure 1 shows a representation of the door lock with emergency release;

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 Figure 2 shows an exploded representation of a part of an emergency release in the closed position;

-

 Figure 3 shows an emergency release according to Figure 2 partially assembled and in a detailed view (Figure 3a);

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 Figure 4 shows an emergency release according to Figure 3 in the opening position;

-

 Figure 5 shows an exploded view of another embodiment of an emergency release according to the invention in the closed position;

-

 Figure 6 shows an emergency release according to Figure 5 partially assembled.

[0022] Figure 1 shows a usual door lock 1 of a box door of an elevator, with a latch 2 that can be moved to an advanced closed position and to a withdrawn open position. In addition, a drive mechanism 3 is provided that has a coupling member, such as a push bar 3a, which acts on the latch 2 when the elevator car reaches its nominal position to move it to its opening position. The actuation mechanism has a cranked lever 5 that acts directly or indirectly on the latch 2. On the cranked lever 5, a drive mechanism 6 is provided in which an emergency release key 7 can be attached (Figure 2). ), for example by insertion. If necessary, the drive mechanism 6 for emergency unlocking can also be provided independently of the bent lever 5 or the drive mechanism 3. For example, a drive mechanism 6a disposed in a separate place can act on the drive mechanism. drive 3 via a transmission mechanism 3b, in particular on the arm of the bent lever 5 away from the latch 2, to cause an emergency release. Preferably, the drive mechanism 6 can rotate about an axis parallel to the axis of rotation of the angled lever 5. The emergency release according to the invention can be part of such a door lock or another suitable door lock.

[0023] In figures 2 to 6 an emergency release configuration is shown with a supplementary housing 10 which can be fixed in a door lock housing 8 or in exterior door components. It is understood that the emergency release according to the invention can also be integrated in a door lock housing 8.

[0024] According to the embodiment of figures 2 to 4, the emergency release has a housing 10 with a housing opening 11 through which the emergency release key 7 can be inserted to engage it in the towing mechanism 6. If, alternatively, the emergency release is integrated in the door lock housing, the housing opening is part of the housing 8. The housing opening 11 is preferably closed completely and hermetically by the sealing element. lock 12, which also prevents the introduction of the emergency release key in the housing to engage it with the drive mechanism 6 in the closed position shown in figure 2. To move the lock element 12 to its open position ( FIG. 4) a control element 13 is provided in the form of a control disk in which the control element bearing 14 is rotatably housed. To this end, the bearing 14 has a A guide 15 for the control element, configured by a peripheral edge, the guide 15 being able to surround the control element with a precise adjustment and without play around the entire perimeter. When mounted, the control member 13 is disposed between the closing element 12 and the base surface of the control element bearing 14 and can be supported on it without play.

[0025] The control unit 13 has a housing 16 in the form of a passage opening for the emergency release key. The edge 17 of the passage opening can accommodate the emergency unlocking key 7 with a precise adjustment and, by inserting the emergency unlocking key, it can be supported on the outside thereof without play around its entire perimeter. In general, the passage opening may constitute a guide for the emergency release key in the direction of the drive mechanism 6. To avoid blocking the control disc with respect to the housing 10 due to an undesired effect caused for example by adhesives, the control disc bearing 14 is rotatably housed with respect to the housing 10 (or the door lock housing 8), for which it can be secured in the housing 10 by the two fasteners 18a, 18b The upper collar 19 of the bearing 14 can enter the upper clamping plate 18b. In general, the control organ bearing can be supported on the inner face of the wall 20 that has the carcass opening 11, so that it is protected with respect to the outside by the carcass wall, thereby preventing interventions external The control organ bearing 14 and the control element are arranged aligned with the housing opening 11 and can be traversed by the emergency release key.

[0026] When the closing element 12 is in its closing position prevents the introduction of the emergency unlocking key 7 into the door lock housing, the closing element 12 can serve as a stop for the emergency unlocking key acting on the control element, as shown in Figure 2. By actuating the control element, in this case by turning the emergency release key around its longitudinal axis, and thereby by rotating the control element. control 13 around an axis of rotation, the drive mechanism 21 of the control element is engaged in the closing element 12. The two possible coupling points 22, on which the emergency release key is rotated 7 optionally clockwise or counterclockwise, they are arranged outside the axis of rotation 23 of the closure element. If the closing member 13 is still rotated in either of the two directions of rotation of the key 7, the closing member 13 can be brought to the position represented in Figure 4, which at the same time the drive mechanism 21 carries the closing element 12 to the opening position shown in figure 4. The closing element is made as a ratchet housed rotatably as a plate-shaped component. In the opening position of the closing element 12 the access to the drive mechanism 6 is opened, in this case through the passage opening 24 of the supplementary housing 10, so that the emergency release key can be coupled in the dragging mechanism 6 to carry out an emergency release by turning it. A support 25 is also provided in the form of a peripheral crown for the closure element 12, so that it, in its closed position, is supported against the forces acting in a coaxial direction to an axis of rotation. The passage opening 24 is arranged at least in overlapping or alignment with the housing opening 11, with the drive mechanism 6 and also the passage opening 16 of the control member. After removing the emergency release key, the closing element 12 can be brought back to its closing position by means of a return member in the form of a spring (not shown), which can act at the eccentric intervention point 25 of the closing element 12 and, if necessary, in the pivot 26 which finishes the axis of rotation.

[0027] In addition, in order to avoid an unauthorized emergency release drive, an interlocking device 30 is provided which, according to the embodiment, acts on the closing element 12

or if necessary also on the command body. For this, the closing element 12 is provided with a bead 12a (figure 3a) which is grasped by the locking element 31 of the locking device 30 and blocks the transfer of the closing element 12 to its opening position according to figure 4 The armature 33 of the electromagnet 32 brings the bolt-shaped locking element 31 to its interlocking or unlocking position. The interlocking element can be operated by means of an independent drive element (not shown), which is arranged in the control space of the machine or elevator or in an independent control space and, therefore, is only accessible to the personnel of emergency. According to the exemplary embodiment, if the electromagnet is arranged in a current line, the interlocking bolt 31 is out due to the spring and interlocks the closure element 12 by grasping the projection 12b thereof. After actuating the electromagnet, the locking bolt 31 returns to its retracted position releasing the closing element 12 (see Figure 4), whereby the closing element 12 can move to its open position. On the other hand, the closing element 12 is also locked in case of an additional movement of the locking member 13 that engages in the closing element.

[0028] Figure 5 shows an alternative embodiment, whose only difference lies in the interlocking device 35, in which, when the electromagnet 36 is out of current, the interlocking element 37 is in its interlocking position and, when current passes through the electromagnet 36, it passes the locking element 37 to its unlocked position with respect to the closing element 12. Moreover, the same components are provided with the same reference numbers as in the embodiment according to Figures 2 to 4, whereby reference is made to the above.

[0029] Figure 6 shows the supplementary housing of the emergency release partially disassembled. The supplementary housing 10 can be fixed by means of fasteners (not shown, such as special screws), which can be joined with the door lock housing located below through the housing 38 and step 39. To make disassembly difficult of the door lock housing, the housings for the fixing means can be closed with additional security elements 40, such as plugs. The safety elements 40 can only be removed by destroying them with considerable effort, which makes intervention in the fixing elements difficult.

List of reference numbers

[0030]

one

Door lock

2

Latch

3

Drive mechanism

3rd

Push bar

3b

 Transmission mechanism

5

Angled lever

6, 6a

Drive mechanism

7

Emergency release key

8

Door lock housing

10

 Supplementary housing

eleven

Housing opening

12

Closing element

13

Command body

14

Control Body Bearing

fifteen

Guide

16

 accommodation

17

 Edge

18a, b

Fasteners

19

 Necklace

twenty

 Wall

twenty-one

 Drive mechanism

22

Intervention point

2. 3

Axis of rotation

24

Passage opening

25

 Support for

26

Pivot

5

30 Interlocking device

31

Interlocking element

32

 Electromagnet

33

 Armor

35

Interlocking device

10

36  Electromagnet

37

Interlocking element

38

 accommodation

39

He passed

40

Security element

fifteen

REFERENCES CITED IN THE DESCRIPTION

The list of references cited by the applicant is only for the utility of the reader, not being part of the European patent documents. Even when references have been carefully collected, errors or omissions cannot be excluded and the EPO disclaims all responsibility in this regard.

Patent documents cited in the description

•

EP 1441091 A2 [0003] • US 2004173415 A1 [0005]

•

WO 2006119222 A [0004]

image 1

Claims (15)

1. Emergency unlocking of a door lock by means of which said door lock can be carried from a locked position to an unlocked position by means of an emergency unlock key (7), presenting or being able to associate said emergency unlocking with a drag mechanism (6) disposed in a housing and which can be operated by means of the emergency unlocking key by moving the door lock to its unlocked position, for which the emergency unlocking key must be inserted into an opening of the housing to engage it with the drive mechanism, a closing element (12) being provided that closes the housing opening (11), at least partially, in its closing position in order to prevent the introduction of the emergency release key (7) to engage it in the drive mechanism (6), and which in an open position allows the introduction of the emergency release key (7), and a control element (13) being provided, characterized in that the control element, by applying the emergency unlocking key (7), you can move to a control position where it, acting directly or indirectly on the closing element (12), the closing element (12) passes to its opening position.

2.

 Emergency unlocking according to claim 1, characterized in that the control element (13) is made in the form of a control disk housed in a rotating manner.

3.

 Emergency release according to claim 1 or 2, characterized in that the control element (13) has a passage opening (16) for the emergency release key (7).

Four.

 Emergency unlocking according to one of claims 1 to 3, characterized in that the control organ

(13) is housed in a control organ bearing (14) which is in turn housed so that it can change position, in particular rotatably, with respect to the housing (10). 5. Emergency release according to one of claims 1 to 4, characterized in that the control unit (13) acts directly on the closure element (12) by means of a drive mechanism (21). 6. Emergency release according to one of claims 1 to 5, characterized in that the control unit (13) It can rotate around an axis that is arranged in a coaxial direction with respect to an axis of rotation of an emergency unlocking mechanism (6) that engages in the emergency unlocking key (7). 7. Emergency unlocking according to one of claims 1 to 6, characterized in that the control organ (13) and the closing element (12) are configured in such a way that the control element (13) can act on the closing element (12) regardless of the direction of rotation of the emergency release key (7), to move the closing element (12) to its opening position.

8.

 Emergency unlocking according to one of claims 1 to 7, characterized in that a return member acting on the closing element (12) is provided passes the closing element to its closed position.

9.

 Emergency unlocking according to one of claims 1 to 8, characterized in that the closing element

(12) is made as a rotating ratchet.

10.

 Emergency unlocking according to one of claims 1 to 9, characterized in that an interlocking device (30) is provided that can lock the control element (13) and / or the closing element (12) when the closing element (12 ) is in its closed position.

eleven.

 Emergency unlocking according to claim 10, characterized in that the interlocking device

(30) can be moved to its unlocked position, which allows emergency unlocking, through external drive means.

12.

 Emergency release according to one of claims 1 to 11, characterized in that the housing (11) containing the closing element (12) is configured as a supplementary housing to the door lock housing (8) containing the drive mechanism ( 6) Emergency unlock.

13.

 Emergency release according to claim 12, characterized in that the supplementary housing (10) of the emergency release can be detachably fixed in the door lock housing and because the fixing means are secured through safety means (40) that can only be removed by destroying them.

14.

 Emergency unlocking according to one of claims 1 to 11, characterized in that the closing element (12) and the control element (13) are integrated in the housing containing the door lock.

fifteen.

 Supplementary housing for an emergency release according to one of claims 1 to 13, said supplementary housing (10) being able to be fixed in a door lock housing (8) of an elevator or a machine, the supplementary housing (10) having an opening of housing (11) to introduce an emergency release key (7), a closing element (12) being provided which in its closed position closes the opening of

housing (11), at least partially, in order to prevent the introduction of the emergency release key (7) to engage it in the drive mechanism (6), and which in an open position allows the introduction of the emergency release key (7), and a control organ (13) is provided, characterized in that the organ By means of the application of the emergency unlocking key (7), it can be passed to a control position in which it, acting directly or indirectly on the closing element (12), passes the closing element (12) to its opening position.