EP1160398B1 - Electrically operated lock - Google Patents

Abstract

The lock has a latch (4) displaced along a guide (3) in the lock housing (1), with a blocking element (8) moved into a locking position for preventing the release of the latch. An electric drive (13) is coupled to an operating mechanism (10) which has 2 operating ranges, used for operation of the blocking element and the latch via respective coupling devices (17,17a), with emergency release of the lock via an emergency release device mechanically coupled to the operating mechanism.

Description

a) einen mittels einer gehäusefesten Führung in einem Schloßgehäuse geführten Riegel,

b) ein in dem Schloßgehäuse gelagertes, von einer Sperrstellung in eine Entsperrstellung betätigbares Sperrelement, welches das Schloß in der Sperrstellung gegen Öffnung blockiert,

c) ein in dem Schloßgehäuse gelagertes Betätigungsteil, welches durch einen elektrischen Antrieb über zwei Bewegungsbereiche betätigbar ist,

d) eine erste Kopplungseinrichtung, welche das Betätigungsteil in dessen erstem Bewegungsbereich mit dem Sperrelement koppelt,

e) eine zweite Kopplungseinrichtung, welche das Betätigungsteil in dessen zweitem Bewegungsbereich mit dem Riegel koppelt und

f) eine in dem Schloßgehäuse angeordnete, mit dem Betätigungsteil mechanisch in Eingriff bringbare Notentriegelung.

The invention relates to an electrically actuated lock, which has

a) guided by a housing-fixed guide in a lock housing bolt,

b) a locking element which is mounted in the lock housing and which can be actuated from a blocking position into an unlocking position, blocking the lock against opening in the blocking position,

c) an operating part which is mounted in the lock housing and which can be actuated by an electric drive over two ranges of movement,

d) a first coupling device which couples the actuating part in the first movement region with the blocking element,

e) a second coupling device which couples the actuating part in the second movement range with the bolt and

f) arranged in the lock housing, with the actuating part mechanically engageable emergency release.

Such locks can z. B. in security areas for use come. In such locks is a two-step unlocking option desirable. In the Vorentriegelung is, preferably by a this authorized person lifting the lock position of the castle. Then it is in a second stage, it is possible to completely retract the trap of the castle to open the door.

Security locks with these properties are widely known, e.g. out EP 0 281 137 A2. It is known from this European patent application electronic door lock, which has a latch and a latch. Of the Outside the door can the bolt by means of an electronic key locked, which controls an electric motor, the bolt over a Retracting cam gear. In the final position of the bolt is over a Lever also retracted the trap. Once trap and tie are retracted, the door lock is unlocked, so that the door are opened can.

The object of the invention is to provide an electrically actuated lock, in each position of the lock an emergency operation of the lock in the case of electrical failure or power failure should be possible.

To achieve this object, an electrically operable according to the invention Lock proposed, which is characterized in that the emergency release from a pivotally mounted driver and a spring on the Driver arranged positively coupled with the operating part Driver element consists.

Such a lock is particularly suitable for use in Security areas. Part of the castle is next to the latch in the Lock housing mounted actuating part, which by an electric Drive over two defined ranges of motion is actuated. In the first Movement range is the electrically driven actuator by means of a first coupling means coupled to a blocking element, d. H. the Movement of the operating part leads to a defined movement of the Locking element. The blocking element is mounted in the lock housing and leaves in the said manner from a locked position to an unlocked position operate, wherein in the locked position, the lock against opening the door is blocked.

Part of the lock according to the invention is also a second Coupling device, which the actuating part in the second Movement range coupled with the bolt, making this sufficiently far in the lock housing can be withdrawn to pivot the door to enable.

Since the movement of the operating part both in the first, as well as the second range of motion is generated by the electric drive can a power failure or an electrical failure to a passive circuit of Castle lead, this would be no longer operable. To an authorized Person in an emergency, eg. B. in case of fire, nevertheless a complete To allow opening of the lock is according to the invention in the Lock housing one with the actuating part mechanically engageable Emergency release arranged.

An important feature of the emergency release is that this the electromotive part of the castle in each position hierarchically superimposed is, d. H. Actuator and bolt can be in any position by the detect mechanical coupling elements of the emergency release and the lock mechanically actuate in this way. This is of particular importance z. B. in a fire or in other cases where the electrical release of the Castle does not work as intended. To achieve the mechanical Intervention of the emergency release in the actuating part regardless of its position is proposed that the emergency release of a preferably pivotally mounted driver and a spring on the Driver arranged positively coupled with the operating part Driver element consists. Due to the resilient arrangement of , Mitnehmerelements on the driver creates a catching device, the one Coupling between driver and actuator regardless of position of the operating part is able to bring about.

With a preferred embodiment of the lock according to the invention is proposed that the blocking element acts on the bolt by the Locking element mechanically locks the bolt in the locked position against opening and releases in the unlocked position. In this embodiment, this is the Locking element always and completely within the lock housing. It exercises therefore not itself the function of a bolt, but works as a secondary Blocking element, which in turn the bolt in the locked position against Open blocked. An advantage of this design is the simple mechanical Structure, as in the closed position of the castle only the bolt off the lock housing protrudes. On the other hand, the blocking element is always completely and thus protected against manipulation within the lock housing.

To the emergency release only authorized persons, z. B. the Supervisor to make accessible, the emergency release is preferable coupled by means of a tumbler with the operating part. This Zuhaltungswerk is functionally completely independent and in particular separated from the electromotive means for actuating part and bolt.

To reduce the actuating forces for the mechanical emergency release a further embodiment of the castle characterized by a means of Emergency release actuatable device for mechanical separation of the Power flow from the electric drive to the actuating part.

The lock according to the invention can be used to turn on and off the electrical Drive to be connected to a central control unit, to the further, similar locks can be connected. In this case, the castle is preferably with switches for detecting the position of the blocking element and / or the bolt, and the switches are connected to the central control and Control unit connected. In this way can be from a central location check the operating position of each lock. Furthermore, can be Immediately detect manipulations.

To detect manipulations and to avoid false signals is another Design of the lock by separately activatable switch for each End position of the locking element or the bolt marked. Only when Locking element or latch are in one of their end position, there is a Signal delivery. If an end position is not detected, or in systematically detected contradictory end positions, this can be considered Note on an error or a manipulation attempt scored and are displayed.

Preferably, the lock is integrated with the lock housing means for the Provided switching on and off of the electric drive. These funds exist preferably of a cooperating with an electrical switch, commercial lock cylinder. However, for verification of Access authorization also other means conceivable, z. B. in the lock housing Integrated receiver of a composite of transmitter and receiver Transponder system.

To achieve a high level of reliability even with a large number in parallel operated locks of an extensive locking system will be in further Embodiment arranged in the lock housing power capacitors for Provision of electrical energy or additional electrical energy for proposed the drive. In this way, z. B. an excessive demand of electrical capacity can be prevented in such cases, in which all or one Most of the locks of the locking system are operated simultaneously and therefore at the same time need electrical energy. With the help of the power capacitors is still a certain electrical emergency operation of each castle possible, for example in the case of a power failure.

Figur 1

Ein elektrisch betätigbares Sicherheitsschloß in Schnittdarstellung und

Figur 2

Ein Blockschaltbild zu einer Prozessoreinheit des Schlosses.

With reference to an embodiment of the invention shown in the drawing further details and advantages are explained below. On the drawing show:

FIG. 1

An electrically operated safety lock in sectional view and

FIG. 2

A block diagram of a processor unit of the lock.

The electrically operated lock is in a box-shaped Lock housing 1 and is fastened by means of a Stulpes 2 in a door. By doing Lock housing 1 is on the housing-fixed guide pin 3, a latch 4 horizontally stored. In the usual way, a bolt head 5 of the bolt protrudes from the forend 2 of the Lock housing out, if the latch 4 in its closed position located. At the locking portion 5 a trap slope 6 is formed, there, as will be described in more detail below, the latch 4 in the described embodiment simultaneously performs the function of a case and he can therefore also be described as a "latch trap".

About more, fixed to the housing guide pin 7 is further in the lock housing a blocking element 8 stored. In the embodiment, the blocking element 8, guided by the guide pin 7, a movement transverse to the movement of the Execute bolt 4.

Further housing-fixed guide pin 9 is in the lock housing also a Operating part 10 stored. In the embodiment, the operating part 10th a translational movement parallel to the direction of movement of the bolt. 4 To run. In the drawing, the operating part 10 to the shape and Structure to show better, double hatched drawn. you recognizes that the actuating member 10 in a plane above both the Riegel 4, as well as the locking element 8 is located. The operating part 10 is along one of its longitudinal edges designed as a rack 11, with the last Gear 12a of a further gears 12 having reduction gear combs. The gearbox is in frictional connection with an electric motor 13 whose Worm shaft 14 meshes with the first gear 12 of the transmission.

The electric motor 13 is located on a housing-fixed pivot axis 15 pivotable motor carrier 16. In the position shown in Figure 1 of the Motor carrier 16 engages the worm shaft 14 of the electric motor in a form-fitting manner the gears 12 of the reduction gear. If, however, the engine mount 16 pivoted clockwise about the pivot axis 15, this leads to a Separation of the power flow between the electric motor 13 and reduction gear and thus to a separation of the power flow between the electric motor and the Operating part 10th

Electric motor 13, latch 4, locking element 8 and actuator 10 act as follows together:

From the closed position shown in Figure 1 with completely out of the Lock housing moved out latch 4, the latch 4 can retract, by the electric motor 13 is actuated via corresponding control signals. About the consisting of the gears 12, 12a gear is the power flow on the rack 11 of the actuating part 10, whereby this in the Drawing plane moved to the right. Via a first coupling device 17 the first part of the movement of the operating part 10 leads to an analogue Movement of the blocking element 8. For this purpose, on the blocking element 8, a pin 18th attached, which engages in a guide 19 of the actuating part 10. The leadership 19 is a forced operation in the form of a once obliquely bent slot executed, the first region obliquely both to the direction of movement of the Operating part 10, as well as obliquely to the direction of movement of the blocking element 8 runs. The movement of the operating part 10 therefore results due to the oblique Section of the guide 19 to an upward in the drawing Movement of the blocking element 8. The blocking element 8 is from his Locked position transferred to its final locked position. The latter is by characterized in that a blocking element 20 of the blocking element 8, which first protrudes into the range of movement of the bolt 4 and therefore blocks it, is withdrawn with the locking element and thus the range of motion of Bolt 4 releases.

Over the length of the above-described first range of motion of the Actuator 10, the latch 4 remains in its illustrated in Figure 1 Starting position. Only after completion of the first movement area and the concomitant task of blocking the blocking element 20 takes that Actuator 10 with the latch 4 with. This is at the bottom of the Operating member 10 a driver 21 attached, which is against a Driving surface 22 of the bolt 4 moves. Only after completion of the first Movement range of the operating part 10 is the driver 21 at the Driving surface 22 at. About the adjoining second Movement range of the driver 21 then couples the movement of the bolt. 4 with the same direction of movement of the actuating part 10 with the result that the latch 4 is fully retracted and can swing open the door. Driver 21 and driver surface 22 therefore form a second Coupling device 17a, which, unlike the first coupling device 17th between blocking element 8 and actuating part 10, exclusively via the second Movement range of the operating part 10 is active. About the first Movement range of the operating part 10, therefore, the latch 4 is unlocked, whereas the latch is over the second range of motion of the operating part 10 is withdrawn. The drive for both ranges of movement via the Electric motor 13, wherein its control, however, for the two Movement areas strictly separated.

For detecting the end positions of the locking element 8 and the bolt 4 are a total of four contacts or buttons provided. Button 23 detects the Locking position of the locking element 8, button 24 whose final locking position. Button 25 detects the latch 4 in its extended and thus locked position, whereas button 26 detects that end position in which the bolt is maximum withdrawn.

In the upper part of the lock housing 1 is a preferably commercially available designed profile cylinder 27 is arranged. Its cam 27a acts on one another button 28. The backup of the profile cylinder 27 via a Screw 29, which rests with its head 30 on the forend 2, while the screw itself far into the lock housing 1 projects and there with a thread 27b the profile cylinder 27 is screwed. Located near the end of the screw 29 itself a housing-fixed retaining element 27d for the screw and also firmly in the lock housing 1, another button 31, which the end of the screw 29th detected. So if the screw 29 is unscrewed from the thread 27b leads this already after a few turns to a switching contact on the button 31, which leads to a signal output. This way will Manipulation attempts counteracted to remove the profile cylinder 27.

Another button 32 detects whether the lock housing 1 within a corresponding cutout of the door is located.

The above-described operation of the bolt 4 takes place exclusively electrically via the electric motor 13. To cases of failure of the electric motor, its control or to prevent a general power failure is provided the lock with a mechanical emergency release 33. These consists of a pivotally mounted in the lock housing 1 Driver 34 and a spring 40 via spring on the driver 34th arranged driver element 35. The driver element 35 is provided with a Fang pin 36 provided, which in a recess 37 of the operating part 10th can intervene.

The mechanical drive of the driver 34 via a key operated tumbler 39, which in the lower part of Lock housing 1 is arranged. By pressing the tumbler 39 with the corresponding key can be the driver 34 about the pivot axis 38 pivot until the under pressure of the spring 40 stationary driving element 35 with its catch pin 36 in the recess 37 of the operating part 10th snaps. Upon further movement of the driver 34 is then a Forcibly coupling the movement of the operating part 10 with the movement of the driver 34. Due to the resilient mounting of the driver element 35th on the driver 34 it is ensured that the catch pin 36 in each case in the recess 37 of the operating part 10 can snap, namely regardless of the position in which the operating member 10 is currently located. Once on the catch pin 36 of the positive connection between driver 34 and Operating member 10 is made, then the actuating member 10 and thus also the latch 4 are completely withdrawn until the door is opened. It So an emergency release is possible even in those cases where one electrical operation of the bolt is no longer possible.

To reduce the mechanical forces when operating the emergency release 33, a decoupling of the electric motor 13 is provided. For this is the Driver 34 provided with an actuating surface which is provided with a cam 41 of the Motor carrier 16 cooperates. Is by means of the tumbler 39 of the Toggled driver 34 in the manner already described, this leads over the cam 41 also to a pivoting of the motor carrier 16 to the Pivot axis 15 and thus to a decoupling of the electric motor 13 of the transmission 12, 12 a and the actuating part 10th

The actuation of the tumbler 39 is detected by a button 42.

To control the lock is preferably in the upper part of the Lock housing 1 a microprocessor 43. The microprocessor 43 is over a Interface connected to a central control unit. The Central control unit can be used for a whole building or a corridor be uniform, in which case other, similar locks with their Microprocessors also to the central control unit are connected. The microprocessor 43 is further provided with inputs for the Signals of the previously described button 23, 24, 25, 26 for monitoring the End positions of the locking element and the bolt provided. comparable Inputs exist for the signals of the push-buttons 31, also already described, 32, 42. Furthermore, there may be optional entries be, z. B. for occupant closure control and to control the expansion of Keyhole cover to handle any manipulation in these areas to recognize the lock immediately and to the central control unit Report.

The power supply 45 for microprocessor 43 and electric motor 13 takes place with 5 volts for the control and 12 volts for the motor drive. In the block diagram (Figure 2) further shown is a temperature monitor 46 of the interior of the Lock housing, about to detect a fiddling with lighters, as well a display device 47. This display device may, for. B. outside over the each door can be attached to a quick visual inspection allow in which operating state, the lock of the respective door currently located.

When using the electrically operated lock as part of an extended Locking system may cause power problems if from the central control unit all locks simultaneously be released. The respectively provided for this drive power for the Electric motors 13 for unlocking the latch 4 adds up to relative high overall performance. For such cases, but also for cases of a short-term Power failure may be an advantage, an emergency power supply in shape to integrate multiple power capacitors 48 in the lock housing 1.

The regular operation of the described lock is as follows: The The basic release of the respective lock is done centrally via the central lock Control and monitoring unit. The release command is from the microprocessor 43 converted into a drive signal for the electric motor 13. This moves over the intermediate gear, the actuator 10 back, over its first range of motion. As already described, this leads to a Actuation of the locking element 8 to its unlocked position. Then it has the claimant in the hand, the lock by his disposal Closing means to open completely. For this purpose, the person entitled to Available key of acting on the button 28 profile cylinder 27th actuated. Due to the signal of the button 28, the microprocessor controls then the electric motor 13 with respect to a complete retraction of the Bolt 4 by means of his doing while his second range of motion Actuator 10. The achievement of the respective operating conditions is hereby controlled by microprocessor by means of the buttons 23, 24, 25, 26, Error messages or messages about illogical operating states are issued by signaled to the microprocessor to the central control unit and lead there to an alarm message.

LIST OF REFERENCE NUMBERS

1

lock housing

2

stulp

3

spigot

4

bars

5

bolt head

6

catch slope

7

spigot

8th

blocking element

9

spigot

10

actuating member

11

rack

12

gear

12a

gear

13

electric motor

14

worm shaft

15

swivel axis

16

engine support

17

first coupling device

17a

second coupling device

18

spigot

19

guide

20

blocking element

21

takeaway

22

entraining

23

button

24

button

25

button

26

button

27

profile cylinder

27a

cam

27b

thread

27d

retaining element

28

button

29

screw

30

head

31

button

32

button

33

Emergency release

34

takeaway

35

dogging

36

catching pin

37

recess

38

swivel axis

39

Zuhaltungswerk

40

feather

40a

Spring for the bolt

41

cam

42

button

43

microprocessor

44

Interface to central control and monitoring unit

45

power supply

46

temperature monitoring

47

Show

48

power capacitor

Claims (13)

1. An electrically actuable lock, which includes:

   a) a latch (4) guided in a lock housing (1) by means of a guide connected to the housing,

   b) a blocking element (8), which is mounted in the lock housing (1) and is actuable from a locked position into an unlocked position and blocks the lock in the locked position from opening,

   c) an actuating member (10), which is mounted in the lock housing (1) and is actuable by means of an electric actuator (13) over two movement regions,

   d) a first coupling device (17), which couples the actuating member (10) in its first movement region, to the blocking element (8),

   e) a second coupling device (17a), which couples the actuating member (10), in its second movement region, to the latch (4), and

   f) an emergency unlocking device (33), which is arranged in the lock housing (1) and may be brought mechanically into engagement with the actuating member (10),

   characterised in that the emergency unlocking device (33) comprises a pivotally mounted carrier (34) and a carrier element (35), which is resiliently arranged on the carrier and may be coupled to the actuating member (10) in a form-locking manner.
2. A lock as claimed in claim 1, characterised in that the blocking element (8) acts on the latch (4), whereby the blocking element (8) blocks the latch (4), in the locked position, against opening, and releases it in the unlocked position.
3. A lock as claimed in claim 1 or 2, characterised in that the emergency unlocking device (33) may be coupled my means of a tumbler mechanism (35) to the actuating member (10).
4. A lock as claimed in one of claims 1 to 3, characterised by a device, which is actuable by means of the emergency unlocking device (3), for mechanically disconnecting the flow of force from the electrical actuator (13) to the actuating member (10).
5. A lock as claimed in one of the preceding claims, characterised in that it is connected to a central control and monitoring unit, to which further, similar locks are connectable, for the purpose of switching the electrical actuator (13) on and off.
6. A lock as claimed in claim 5, characterised in that it is provided with sensors (23, 24, 25, 26) for detecting the position of the blocking element (8) and/or the latch (4) and that the sensors (23, 24, 25, 26) are connected to the central control and monitoring unit.
7. A lock as claimed in claim 6, characterised by separately actuable switches (23 or 24; 25 or 26) for each end position of the blocking element (8) or the latch (4).
8. A lock as claimed in one of the preceding claims, characterised in that it is provided with means (27, 27a, 28) integrated into the lock housing (1), for switching the electrical actuator (13) on and off.
9. A lock as claimed in claim 8, characterised in that the means consist of a commercially available profiled cylinder (27) co-operating with an electrical switch (28).
10. A lock as claimed in one of the preceding claims, characterised by power capacitors (48), arranged in the lock housing (1), for providing electrical energy or additional electrical energy for the actuator (13),
11. A lock as claimed in one of the preceding claims, characterised in that the first coupling device (17) has two sections such that, in the first section, the blocking element (8) follows the movement of the actuating member (10) whilst, in the second section, the blocking element (8) remains in its position, whereby the first section is that which is covered first, starting from the locked position of the blocking element (8).
12. A lock as claimed in one of the preceding claims, characterised in that the second coupling device (17a) has two sections such that, in the first section, the latch (4) remains in its position whilst, in the second section, the latch (4) follows the movement of the actuating member (10) whereby the first section is that which is covered first, starting from the blocked position of the latch (4).
13. A lock as claimed in one of the preceding claims, characterised in that, with the omission of a separate bolt, the latch (4) is simultaneously the bolt of the lock and it is provided at its end projecting out of the lock housing (1) with a bolt bevel (6).

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