EP2050704B1 - Emergency release - Google Patents

Description

The invention relates to an emergency release of a door lock, in particular a shaft door of an elevator, by means of which the door lock can be transferred by means of an emergency release key from a locking position to a release position, wherein the emergency release has a driver arranged in a housing or is assigned to such a driver, which under transfer of the Door lock is actuated in its release position by the emergency release key, including the emergency release key is to be introduced for coupling to the driver in a housing opening.

Such emergency releases of door locks, especially in public lifts, are often subject to deliberate destruction or attempts of unauthorized interference with the operating condition of the lift or the machine or lift protected by the door lock. In this case, it is often attempted to gain access to the elevator by unlatching the door lock or also to damage the door lock in such a way that a subsequent authorized access is impeded or prevented, for example by introduction, by various objects such as screwdrivers, knives, wires or the like of adhesives in the door lock.

To avoid unwanted manipulation of the door lock, is from the EP 1 441 091 A2 already known a door lock with emergency release, in which an additional locking means is provided which locks a to be actuated by the emergency release key driver emergency release, when the driver is in its normal operation of the machine or the elevator enabling neutral position. By such a door lock, however, not all external influences can be safely avoided, especially not taking into account current requirements for door closures, as required for example in DIN EN 81-71.

Of the WO 2006/119222 A 2 is a padlock with a protective cover to remove, which serves to protect the lock mechanism of the lock from moisture and thus against corrosion. For this purpose, the protective cover has an engagement for the key, which is covered by two slider-like elements, which are arranged in a rotatably mounted housing part, so as to allow rotation of the housing part upon a rotational movement of the key.

Also the document US2004 / 173415 A1 discloses a emergency release of door closures according to the preamble of claims 1 and 15.

The invention is therefore an object of the invention to provide a device that increases the protection against manipulation of the door lock, in particular their emergency release, by unauthorized persons.

The invention is achieved by an emergency release according to claim 1, wherein a closure element is provided which at least partially closes the housing opening in its closed position to prevent insertion of the associated emergency release key for coupling to an emergency release actuated driver, and in an open position Introduction of emergency release key allows. Further, a control member is provided, which by attack of the emergency release key in a control position can be converted, in which this indirectly or directly on the closure element acting on the closure element transferred to its open position. This arrangement of the closure element thus further complicates an unauthorized attack on the driver of the emergency release, which is to actuate the opening of the door closure. Foreign objects such as screwdrivers, wires o. The like. Can practically no longer be introduced into the housing, so that damage to the door lock can be prevented. On the other hand, by an operation of the control member by means of the emergency unlocking key as before an authorized operation of the emergency release in a simple manner possible. The closure element is in this case preferably designed such that it completely covers the housing opening for the introduction of the emergency release key to the interior of the housing and completely closes, more preferably at least substantially or completely gap-free. The introduction of thin foreign objects, such as wires is thereby impossible. The closure of the housing opening by the closure element can in particular also be at least substantially media-tight, so that penetration of pasty or liquid foreign substances such as adhesives, water, acids o. The like. Prevented, or these can not cause dysfunctional damage.

The emergency release according to the invention of a door closure can in particular be designed as an emergency release of a shaft door of a lift.

In order to allow a simple operation of the emergency release, the control member may also be in front of the closure element with respect to the introduction of the emergency release key into the housing. In this way, the control element can first be actuated by means of the emergency unlocking key and the closure element can be transferred to its open position, in order subsequently to couple the emergency unlocking key to the driver of the emergency release in order to lock the door lock in to transfer his release order. Preferably, the emergency release is carried out such that the emergency release key here after actuation of the control member is not to be removed from the emergency release in general or.dem control member in particular to couple the key to the driver. Preferably, a coupling of the emergency unlocking key to the driver can take place in that, after actuation of the control member, it is pushed further into the housing opening. The driver of the emergency release can be arranged for this purpose in relation to the insertion direction of the emergency release key in the housing behind the control member.

A particularly simple operation of the emergency release is possible if the control member is designed as a rotatably mounted control disc. The axis of rotation of the control member or the control disk can in this case be arranged parallel or preferably coaxially to the axis of rotation of the driver of the emergency release, to which the emergency release key is to be coupled. To actuate the closure element can generally be formed in the same direction or in opposite directions to the driver of the emergency release rotatable, preferably also in the same direction or in opposite directions to the driver of the emergency release rotatable to transfer the closure element in its open position.

Preferably, the control member has a passage opening for the emergency release key, in order to be able to couple it after being passed through the control member or the control disk and actuation of the closure element to the carrier of the emergency release. The Dwrchführbereich the control body can at the same time serve to couple the emergency release key to actuate the control member. The passage opening of the blocking member may generally be arranged in the cross-sectional area of the housing opening. The passage opening of the blocking device bearing can generally be arranged in the cross-sectional area of the housing opening, preferably congruent thereto. Optionally, the control member may also be designed as a displaceable organ, so that the closing element is transferred into its open position by its displacement by means of the emergency unlocking key. The point of attack of the emergency release key on the control member can thereby be arranged independently of the location of the driver of the emergency release.

Preferably, the control member, in particular as training as a rotatably mounted control disc, mounted in a receiving this control organ bearing, which in turn is movable relative to the housing, in particular rotatably mounted. If a relative movement of the control member relative to the control member bearing is prevented, for example by unauthorized connection of the two components by adhesives or other means, the control member bearing can be relative to the housing the emergency unlocking be movable, preferably such that the emergency release key can be brought to the driver of the emergency release for coupling. By movement of the control member bearing thereby a relative movement of the control member relative to the housing is made possible.

The control member can act by means of a driver directly on the closure element, possibly also by means of a suitable coupling mechanism.

The passage opening of the control device for the emergency release key can be designed to receive the key accurately. The receptacle can also be adapted to the outer circumference of the key in such a way that the receptacle of the control member rests against the outer circumference of the wrench fully circumferentially free of play and possibly also without a gap. The key can in this case have a shaft of constant cross-section, for example in the form of a conventional triangular wrench with end-side receptacle for the driver of the emergency release. In combination herewith or independently thereof, the introduction of the emergency release key into the receptacle of the control member can be limited by the closure element acting as a stop.

The closure element can be designed as a latch member.

The closure element can be pivotally mounted, wherein the pivot axis of the closure element can be arranged eccentrically to the axis of rotation of the control member. The pivot axis of the closure element may be arranged outside the cross-sectional area of the control member with respect to the direction of insertion of the emergency release key on the housing. In such an embodiment of the emergency release but also generally independent of this, the control member and the closure element may be designed such that the control member can act independently of the direction of rotation of the emergency release key on the closure element to convert this into its open position. This can be done on a control disc trained control member one or more eccentrically arranged driver can be arranged, which can act in both directions of rotation of the control member about its axis of rotation on the closure element, wherein the point of engagement of the driver is arranged on the closure element each eccentric to its axis of rotation, so that this from its closed position in his Opening position can be transferred.

In order to transfer the closure element from its open position into its closed position, a return element acting on it may be provided, for example in the form of a return spring acting on the locking element.

Preferably, a locking device is also provided, which acts in its blocking position blocking the control member and / or the closure element. An actuation of the control member or a transfer of the closure element in its open position is thus prevented by the locking device. Preferably, the closure element is blocked in its closed position. The locking device can be unlocked by an external device which can be provided in the control cabinet of the respective machine or elevator or in a special operating room by a corresponding action of an instructed and authorized operator and, if necessary, be returned to its blocking position. The locking device may in particular comprise an electromagnet whose armature serves directly as a blocking member or acts via a transmission mechanism or an extension on a locking member. The locking device can lock with energized electromagnet or electroless electromagnet.

Preferably, the housing comprising the closure element is arranged as an additional housing on the door lock housing comprising the driver of the emergency release. As a result, existing door lock housing can be retrofitted particularly easy to form the emergency release according to the invention.

The additional housing can in this case be attached to a door housing such that the two housing openings overlap one another, coaxial or congruent to each other, so that after actuation of the arranged in the additional housing control the emergency release key by linear displacement on the arranged in the door lock housing driver of the emergency release coupled is. The attachment of the additional housing can be done in particular by releasable fastening means, preferably by special fasteners we special screws that can not be solved by commonly used tools. The fastening means may be further secured by removable means only by destroying them. For this purpose, the externally arranged receptacle of the fastening means with a plug o. The like. Be closed, which is removable only with destruction. Alternatively, however, the control element with closure element can be arranged directly in the door lock housing.

Figur 1

eine Darstellung eines Türverschlusses mit Notentriegelung,

Figur 2

einen Teil einer erfindungsgemäßen Notentriegelung in Schließstellung in Explosionsdarstellung,

Figur 3

eine Notentriegelung nach Figur 2 in teilweise montiertem Zustand und in Detailansicht (Fig. 3a),

Figur 4

eine Notentriegelung nach Figur 3 in Öffnungsstellung,

Figur 5

eine weitere Ausführungsform einer erfindungsgemäßen Notentriegelung in Schließstellung in Explosionsdarstellung,

Figur 6

eine Notentriegelung nach Figur 5 in teilweise montiertem Zustand.

The invention is described below by way of example and explained by way of example with reference to the figures. Show it:

FIG. 1

a representation of a door lock with emergency release,

FIG. 2

a part of an emergency release according to the invention in the closed position in exploded view,

FIG. 3

an emergency release after FIG. 2 in partially assembled condition and in detail view ( Fig. 3a )

FIG. 4

an emergency release after FIG. 3 in open position,

FIG. 5

a further embodiment of an emergency release according to the invention in the closed position in exploded view,

FIG. 6

an emergency release after FIG. 5 in partially assembled condition.

FIG. 1 shows a conventional door closure 1 of a hoistway door of a lift, with a latch 2, which in a forward locking position and a retracted open position can be transferred. Further, an actuating mechanism 3 is provided, which has a Ankoppelungsorgan such as a push rod 3a, which acts on application of the elevator car its target position on the bolt 2 in order to convert this into its open position. The actuating mechanism in this case has an angle lever 5, which acts with a leg directly or indirectly on the bolt 2. At the angle lever 5, a driver 6 is provided, to which an emergency release key 7 (FIG. Fig. 2 ) can be coupled for example by plugging. Optionally, the driver 6 may be provided for the emergency release independently of the angle lever 5 or the actuating mechanism 3, for example, a separately arranged driver 6a act through a transmission mechanism 3b on the actuating mechanism 3, in particular on the side facing away from the bolt 2 legs of the angle lever 5, to effect an emergency release. The driver 6 is in this case preferably rotatable about an axis which is parallel to the axis of rotation of the angle lever 5. The emergency release according to the invention may be part of such a door closure or another suitable door closure.

In the Figures 2-6 an embodiment of the emergency release is shown with an attachable to a door lock housing 8 or outer door components additional housing 10, it is understood that the emergency release according to the invention can also be integrated in a door lock housing 8.

According to the embodiment of Figures 2-4 the emergency release on a housing 10 with a housing opening 11, through which the emergency release key 7 for coupling to the driver 6 is inserted. Alternatively, the emergency release is integrated in the door lock housing, the housing opening is then part of the housing 8. The housing opening 11 is preferably closed completely and media-tight by the closure element 12, which also includes an introduction of the emergency release key into the housing for coupling to the driver 6 in the in FIG. 2 shown closed position prevented. For the transfer of the closure element 12 in its open position ( FIG. 4 ) is a control member 13 is provided in the form of a control disk which is rotatably mounted in the control member bearing 14. For this purpose, the bearing 14 has a trained by a peripheral edge guide 15 for the control member, wherein the guide 15 can surround the control member precisely fitting and circumferentially free of play. In the assembled state, the control member 13 is then arranged between the closure element 12 and the base surface of the control element bearing 14 and can rest against each of these play.

The control member 13 has a receptacle 16 in the form of a passage opening for the emergency release key. The edge 17 of the passage opening in this case can record the emergency release key 7 accurately and abut the same during insertion of the emergency release key fully circumferentially clearance on the outside. In general, the passage opening can be a guide for the emergency release key in the direction of the driver 6. In order to prevent blocking of the control disk relative to the housing 10 by undesired action, such as adhesives, the control disk bearing 14 is rotatably mounted relative to the housing 10 (or the door lock housing 8), for which purpose it is supported on the housing 10 by the two plate-shaped retaining elements 18a, 18b can be. The upper collar 19 of the bearing 14 can in this case penetrate into the upper retaining plate 18b. In general, the control member bearing on the inside of the housing opening 11 having wall 20 abut, so that it is shielded from the outside of the housing wall, whereby external attacks are prevented. The control member bearing 14 and the control member are in this case arranged in alignment with the housing opening 11 and can be penetrated by the emergency release key.

An introduction of the emergency release key 7 in the door lock housing is prevented by the closure element 12 in its closed position, wherein the closure element 12 as in FIG. 2 shown serve as a stop for acting on the control member emergency release key. By actuation of the control member, here by rotation of the emergency release key about its longitudinal axis and thus rotation of the control member 13 about an axis of rotation, the driver 21 of the control member is coupled to the closure element 12. The two possible Ankoppelungspunkte 22, which are attacked at a selective rotation of the emergency release key 7 in a clockwise or counterclockwise direction, are in this case arranged outside the axis of rotation 23 of the closure element. In both directions of rotation of the key 7 can by further rotation of the control member 13 of this in the in FIG. 4 shown position, wherein at the same time by the driver 21, the closure element 12 in the in FIG. 4 illustrated opening position is transferred. The closure element is in this case designed as a pivotally mounted pawl in the form of a plate-like component. In the open position of the closure element 12 access to the driver 6 is exposed, in the present case through the passage opening 24 of the auxiliary housing 10, so that the emergency release key to couple to the driver 6 and can cause a twist lock under rotation. Further, a support 25 is provided in the form of a circumferential ring for the closure element 12, so that this is supported in its closed position with respect to forces acting coaxially to a rotation axis. The passage opening 24 is at least overlapping or aligned with the housing opening 11 and the driver 6 and also the passage opening 16 of the control member. By a return member in the form of a spring (not shown) which can engage the eccentrically arranged point 25 of the closure element 12 and possibly the pivot axis defining pin 26, the closure element 12 can be transferred back to its closed position after removal of the emergency release key.

In order to prevent unauthorized actuation of the emergency release, a blocking device 30 is furthermore provided which, according to the exemplary embodiment, acts on the closure element 12 or optionally also on the control element. For this purpose, the closure element 12 with an undercut 12a ( Fig. 3a ), which is engaged behind by the blocking element 31 of the locking device 30 and a transfer of the closure element 12 in its open position to FIG. 4 blocked. The bolt-shaped blocking element 31 is in this case transferred by the armature 33 of the electromagnet 32 in its blocking position or unlocked position. The blocking element can be actuated by a separate actuating element (not shown), which is arranged in the control space of the machine or the elevator or a separate control room and thus only emergency personnel are accessible. Is provided according to the embodiment of the electromagnet energized, the locking pin 31 is extended due to the spring and locks the closure element 12 by engaging behind the projection 12b. After actuation of the electromagnet, the locking pin 31 is transferred to its retracted position releasing the closure element 12 (see FIG. 4 ), so that the closure element 12 can be transferred into its open position. On the other hand, blockage of the closure element 12 then blocks a further movement of the blocking element 13 which is coupled to the closure element.

FIG. 5 shows an alternative embodiment, wherein the only difference in the locking device 35 is, in which in Stromlosstellung of the electromagnet 36, the blocking element 37 is in its blocking position and the blocking element 37 is transferred by the current-carrying electromagnet 36 in its Entblockierungsstellung against the closure element 12. Incidentally, the same components are provided with the same reference numerals, as in the embodiment of the Figures 2-4 , Reference is made to the above.

FIG. 6 shows the additional housing of the emergency release in partially disassembled state. The additional housing 10 is by means of Fastening elements (not shown, such as special screws), which can be connected by the receptacle 38 and the passage 39 with the door lock housing arranged underneath, fastened. To complicate disassembly of the door lock housing, the recordings for the fastening means with additional securing elements 40 can be closed as plugs. The fuse elements 40 are removable only at considerable expense and destruction of the same, whereby an attack on the fasteners is difficult.

LIST OF REFERENCE NUMBERS

1

door lock

2

bars

3

actuating mechanism

3a

pushrod

3b

transmission mechanism

5

bell crank

6,6a

takeaway

7

emergency release

8th

Door lock housing

10

additional housing

11

housing opening

12

closure element

13

control element

14

Control element bearings

15

guide

16

admission

17

edge

18a, b

retaining elements

19

Federation

20

wall

21

takeaway

22

attackpoint

23

axis of rotation

24

Through opening

25

In stock

26

spigot

30

locking device

31

blocking element

32

electromagnet

33

anchor

35

locking device

36

electromagnet

37

blocking element

38

admission

39

execution

40

fuse element

Claims (15)

1. Emergency release of a door closure by means of which the door closure can be moved from a locking position to a release position using an emergency release key (7), wherein the emergency release includes or can be associated to a driver dog (6) disposed in a housing which while moving the door closure to its release position, is operable by the emergency release key, for which purpose the emergency release key has to be inserted in a housing opening for coupling to the driver dog, wherein a closure element (12) is provided which in its closing position at least partially closes the housing opening (11) to prevent insertion of the emergency release key (7) for its coupling to the driver dog (6) and which allows insertion of the emergency release key (7) in an opening position, and wherein a control member (13) is provided, characterized in that by the engagement of the emergency release key (7), the control member can be moved to a control position in which it directly or indirectly acts on the closure element (12) while moving the closure element (12) to its opening position.
2. Emergency release according to claim 1, characterized in that the control member (13) is formed as control disk that is supported for rotation.
3. Emergency release according to claim 1 or 2, characterized in that the control member (13) has a passage opening (16) for the emergency release key (7).
4. Emergency release according to one of the claims 1 to 3, characterized in that the control member (13) is supported in a control member bearing (14) which is supported on its part in a manner such as to be variable in its position and particularly rotatable with respect to the housing (10).
5. Emergency release according to one of the claims 1 to 4, characterized in that the control member (13) acts directly on the closure element (12) by means of a driver dog (21).
6. Emergency release according to one of the claims 1 to 5, characterized in that the control member (13) is rotatable about an axis that is arranged coaxially with an axis of rotation of the driver dog (6) of the emergency release coupling to the emergency release key (7).
7. Emergency release according to one of the claims 1 to 6, characterized in that the control member (13) and the closure element (12) are designed in such a manner that the control member (13) acts directly on the closure element (12) independently of the rotation direction of the emergency release key (7), while moving the closure element to its opening position.
8. Emergency release according to one of the claims 1 to 7, characterized in that a return element acting on the closure element (12) is provided for moving the closure element to its closing position.
9. Emergency release according to one of the claims 1 to 8, characterized in that the closure element (12) is designed as a pivotally supported ratchet.
10. Emergency release according to one of the claims 1 to 9, characterized in that a locking device (30) is provided that can act in a locking manner on the control member (13) and/or on the closure element (12) if the closure element (12) is in its locking position.
11. Emergency release according to claim 10, characterized in that the locking device (30) can be moved to its release position enabling unlocking by means of external actuation means.
12. Emergency release according to one of the claims 1 to 11, characterized in that the housing (11) including the closure element (12) is formed as a supplementary housing of the door closure housing (8) that includes the driver dog (6) of the emergency release.
13. Emergency release according to claim 12, characterized in that the supplementary housing (10) of the emergency release is detachably fixed to the door closure housing and that the fixing means are secured by securing means (40) that can be removed only upon destruction.
14. Emergency release according to one of the claims 1 to 11, characterized in that the closure element (12) and the control member (13) are integrated in the housing that surrounds the door closure.
15. Supplementary housing for an emergency release according to one of the claims 1 to 13, wherein the supplementary housing (10) can be fixed to a door closure housing (8) of an elevator or a machine and wherein the supplementary housing (10) includes a housing opening (11) for the insertion of an emergency release key (7) and wherein a closure element (7) is provided which in its closing position at least partially closes the housing opening (11) to prevent insertion of the emergency release key (7) for its coupling to a driver dog (6) of the emergency release and which allows an insertion of the emergency release key (7) in its opening position, wherein a control member (13) is provided, characterized in that by the engagement of the emergency release key (7) the control member can be moved to a control position in which it directly or indirectly acts on the closure element (12) while moving the closure element (12) to its opening position.

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