EP1160399B1 - Electrically actuated lock - Google Patents

Description

The invention relates to an electrically actuated lock, with a in one Lock housing guided, actuated by an electric drive latch and a the electric drive superimposed, mechanically working Emergency release for the bolt, the emergency release by means of an electric operable locking device is lockable.

Already known is such a lock from DE 38 06 422 A1. The lock described here, which are used in security areas can, has a guided in the lock housing latch whose Actuation via an integrated in the lock housing electric drive he follows. In such a lock would be a power failure or an electrical Defective lead to a passive circuit, the lock would be no longer operable. To assist an authorized person in an emergency, e.g. in case of fire, However, to allow a complete opening of the castle, is the one electric drive of the lock superimposed, mechanically operating emergency release intended for the bolt.

The problem with such an emergency release is the theoretically existing Danger that an unauthorized person has power over the key to the Emergency unlocking provides and without authorization the lock or, if it is several similar locks acts, all locks opens. That's why the emergency release lockable by means of an electrically operated locking device.

The invention has for its object to improve the previously known from the prior art lock castle.

To solve this problem is proposed an electrically actuated lock, with a guided in a lock housing, actuated by an electric drive latch and a the electric drive superimposed, mechanically operating emergency release for the bolt, the emergency release by means of an electrically operated locking device can be blocked, characterized characterized in that part of the emergency release is a locking mechanism, and that by the locking device, the locking mechanism or parts thereof are lockable.

In cases where an unauthorized person is the key to the Emergency release authorized, this can be done by means of electrically operated Preventive locking device are locked, which provided according to the invention is that part of the emergency release is a locking mechanism, said by the Blocking the locking mechanism or parts thereof are lockable.

According to one embodiment of the lock according to the invention is part of the Emergency unlocking a locking mechanism, whereby by the locking device, the locking mechanism or parts of it are lockable.

According to a further embodiment is by the locking device an emergency lock can be locked, which locks the locking mechanism when the locking mechanism is actuated entraining.

Preferably, part of the locking device is an electrically actuated Locking element which locks the emergency release in a first position and in releases a second position. The blocking element may e.g. through an electromagnet be collectible. Preferably, the blocking element is to a gate valve with the direction of movement transverse to the direction of movement of Notriegels.

With the invention it is further proposed that the emergency bolt with a driver is engaged, and that the driver with a in the lock housing mounted operating part can be coupled, which by the electric drive is operable.

To achieve the mechanical intervention of the emergency release in the operating part regardless of its respective position is a preferred embodiment of the lock characterized by a spring on the driver arranged, positively coupled with the actuating part driver element. Due to the resilient arrangement of the driver element on the driver arises a catching device, which is a coupling between driver and Actuating to bring about regardless of the position of the operating part can.

To ensure that after removing the required for emergency release Key immediately again blocking the locking device is done is the locking mechanism preferably with a locking fuse against premature Remove the key provided, the Verschlußsicherungselement via a mechanical transmission element with the Locking element in the sense of blocking the emergency release can be coupled.

To detect manipulations and to avoid false signals is another Embodiment characterized by an electrical button for detection the operation of the locking mechanism.

• ein in dem Schloßgehäuse gelagertes, von einer Sperrstellung in eine Entsperrstellung betätigbares Sperrelement, welches das Schloß in der Sperrstellung gegen Öffnung blockiert,
• ein in dem Schloßgehäuse gelagertes Betätigungsteil, welches durch den elektrischen Antrieb über zwei Bewegungsbereiche mit tätigbar ist,
• eine erste Kopplungseinrichtung, welche das Betätigungsteil in dessen erstem Bewegungsbereich mit dem Sperrelement koppelt und
• eine zweite Kopplungseinrichtung, welche das Betätigungsteil in dessen zweitem Bewegungsbereich mit dem Riegel koppelt. Bestandteil des so weitergebildeten Schlosses ist daher ein Betätigungsteil, welches durch den elektrischen Antrieb des Schlosses über zwei definierte Bewegungsbereiche betätigbar ist. In dem ersten Bewegungsbereich wird das elektrisch angetriebene Betätigungsteil mittels einer ersten Kopplungseinrichtung mit einem Sperrelement gekoppelt, d.h. die Bewegung des Betätigungsteil führt zu einer definierten Bewegung des Sperrelements. Ferner ist eine zweite Kopplungseinrichtung vorgesehen, welche das Betätigungsteil in dessen zweitem Bewegungsbereich mit dem Riegel koppelt, wodurch dieser ausreichend weit in das Schloßgehäuse zurückgezogen werden kann, um das Aufschwenken der Tür zu ermöglichen.

When using electrically operated locks in security areas, it is desirable that the locks have a two-step unlocking option. In a Vorentriegelung is, preferably by a person authorized for this purpose, the blocking position of the castle canceled. Then, in a second stage, it is possible to completely pull back the latch of the lock so as to open the door. After the mechanical principle working security locks with these properties are known. In order to realize this basic principle of the double unlocking even with an electrically actuated lock, a preferred embodiment of the lock has the following features:

• 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 in the blocking position against opening,
• a bearing in the lock housing actuating part, which is acted upon by the electric drive over two ranges of motion,
• a first coupling device which couples the actuating part in the first movement region with the blocking element and
• a second coupling device, which couples the actuating part in the second movement range with the bolt. Part of the thus developed lock is therefore an actuating part, which is actuated by the electric drive of the castle over two defined ranges of motion. In the first movement region, the electrically driven actuating part is coupled to a blocking element by means of a first coupling device, ie the movement of the actuating part leads to a defined movement of the blocking element. Further, a second coupling device is provided, which couples the actuating part in the second movement range with the bolt, whereby it can be sufficiently withdrawn into the lock housing to allow the swinging of the door.

According to a further embodiment of the lock according to the invention is proposed that the blocking element acts on the bolt, wherein the blocking element blocked the bolt in the locked position against opening and in the Release unlocking position. In this embodiment, the blocking element is located always and completely within the lock housing. It does not exercise itself therefore Function of a bolt, but works as a secondary blocking element, which in turn blocks the bolt in the locked position against opening. Advantageous in this embodiment, the simple mechanical structure, as in the Closed position of the lock only the bolt from the lock housing protrudes. By contrast, the blocking element is always complete and thus tamper-proof within the lock housing.

To the emergency release only authorized persons, e.g. the supervisory staff, The emergency release is preferably by means of the Closing mechanism with the operating part coupled. The locking mechanism is functional completely independent and in particular separate from the electromotive means for actuating part and bolt.

The lock according to the invention can be used to turn on and off the electrical Drive and for the electrical actuation of the locking device with a central Control and control unit connected to the other, similar locks can be connected. This way, it can be centralized for each one Lock check its operating position. Furthermore, manipulations can be Immediately notice.

The lock can with a built-in lock housing profile cylinder for be switched on and off the electric drive. However, they are For verification of the access authorization, other means are conceivable, e.g. in the Lock housing integrated receiver of a transmitter and receiver composite transponder system.

To achieve high reliability even with a large number of parallel operated Locks of an extensive locking system are in a further embodiment in the lock housing arranged power capacitors to provide of electrical energy or additional electrical energy for the Drive proposed. In this way, z. B. an excessive demand of the 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 located in a box-shaped lock housing 1 and is fastened by means of a Stulpes 2 in a door. In the lock housing 1, a bolt 4 is mounted horizontally on guide pin 3 fixed to the housing. In the usual way, a bolt head 5 of the bolt protrudes from the forend 2 of the Lock case out, if the latch 4 is in its closed position. At the locking portion 5, a case slope 6 is formed, as, as will be described in more detail below, the latch 4 in the described Embodiment simultaneously performs the function of a trap and he therefore Also referred to 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. One recognises, that the actuating member 10 in a plane above both the bolt 4, as well as the blocking 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 meshes. The gearbox is in frictional connection with an electric motor 13, the 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 form fit in the Gears 12 of the reduction gear. If, however, the engine mount 16 in Clockwise pivoted about the pivot axis 15, this leads to a separation 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 actuating 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 pulled out latch 4, the latch 4 can pull back by is actuated via corresponding control signals of the electric motor 13. about the gear consisting of the gears 12, 12a, the power flow takes place on the Rack 11 of the operating part 10, which causes this in the plane of the drawing moved to the right. About a first coupling device 17 leads the first part of the movement of the operating part 10 to an analog movement of the blocking element 8. For this purpose, a pin 18 is attached to the blocking element 8, which engages in a guide 19 of the actuating part 10. The guide 19 is executed as forced guidance in the form of a once obliquely bent long hole, whose first area is inclined both to the direction of movement of 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 moved from its blocking position transferred to its unlocked position. The latter is characterized in that a blocking element 20 of the blocking element 8, which initially in the range of motion of the bolt 4 protrudes and therefore blocked, with the blocking element is withdrawn and thus releases the range of movement of the bolt 4.

Over the length of the above-described first range of motion of the Actuator 10 remains the latch 4 in its initial position shown in Figure 1. Only after completion of the first movement area and the so accompanying task of blocking the blocking element 20 takes the operating part 10 the bar 4 with. This is at the bottom of the operating part 10 a driver 21 attached, which is against a cam surface 22 of the bolt 4 moves. Only after completion of the first movement range of the operating part 10 is the driver 21 on the driver surface 22 at. On the adjoining second range of motion couples the driver 21st then the movement of the bolt 4 with the same direction of motion Operating part 10, with the result that the latch 4 is completely withdrawn and can swing the door open. Driver 21 and driver surface 22 form Therefore, a second coupling device 17a, unlike the first coupling device 17 between blocking element 8 and actuating part 10, exclusively becomes active over the second range of movement of the operating part 10. On the first movement range of the operating part 10 is therefore the latch. 4 unlocked, whereas the loaded by the spring 40a latch on the second Movement range of the operating part 10 is withdrawn. The drive for Both ranges of movement via the electric motor 13, wherein the drive However, strictly separated for the two movement areas.

For detecting the end positions of the locking element 8 and the bolt 4 are total four contacts or buttons provided. Button 23 detects the blocking 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 retracted to the maximum.

In the upper part of the lock housing 1 is a preferably commercially designed Profile cylinder 27 is arranged. Its cam 27a acts on another Push button 28. Securing the profile cylinder 27 via a screw 29, the with her head 30 rests against the forend 2, while the screw itself far into the Lock housing 1 protrudes and there with a thread 27b of the profile cylinder 27 is screwed. Near the end of the screw 29 is a fixed to the housing Holding element 27d for the screw and also firmly in the lock housing 1, another button 31, which detects the end of the screw 29. So if the screw 29 is screwed out of the thread 27b, this already leads after a few turns to a switching contact on the button 31, what with it a signal delivery leads. In this way manipulation attempts are counteracted, to remove the profile cylinder 27.

Further buttons 32 detect whether the lock housing 1 within a corresponding Section 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 exists u. a. arranged in a pivotable manner in the lock housing 1, via a locking mechanism 39 actuated driver 34 and a spring over spring 40 arranged on the driver 34 driver element 35. The driver element 35 is provided with a catch pin 36, which in a recess 37 of the operating part 10 can intervene.

The mechanical drive of the driver 34 via the key-operated Locking mechanism 39, which is arranged in the lower part of the lock housing 1 and in the usual way of Sperrzuhaltungen and Schließzuhaltungen composed. By pressing the locking mechanism 39 with the appropriate Key can be the driver 34 pivot about the housing-fixed pivot axis 38, until the under pressure of the spring 40 associated driver element 35 with its catch pin 36 snaps into the recess 37 of the operating part 10. Upon further movement of the driver 34 is then a forced coupling the translational movement of the actuating part 10 with the rotational movement of the driver 34. Due to the resilient mounting of the driver element 35 on the driver 34 ensures that the catch pin 36 in can snap in any case in the recess 37 of the operating part 10, and although independent of the position in which the operating part 10 is currently located. Once on the catch pin 36 of the positive connection between the driver 34th and actuating member 10 is made, the actuating member 10 and thus also pull back the latch 4 completely until the door is opened. So it is an emergency release even in such cases possible, in which an electric Operation of the bolt is no longer possible. The operation of the locking mechanism 39 is detected by means of a button 42.

To reduce the mechanical forces when operating the emergency release 33, a decoupling of the electric motor 13 is provided. 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 locking mechanism 39 of the driver 34 pivoted in the manner already described, this leads over the cam 41 also to a pivoting of the engine mount 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

To a misuse in case of an unauthorized key for the locking mechanism 39, the emergency release 33 is by means of an electrically actuated Locking device 43 lockable. Part of the locking device is a pin 44, with which an emergency lock 45 can be locked, which upon actuation of the locking mechanism 39 entrains the locking tumblers of the locking mechanism. The emergency lock 45 is a housing-mounted guide pin 46 translationally mounted plate, the Part of the locking mechanism is. The emergency lock 45 is with a lockout 47 for provided the pin 44 of the locking device. Is the pin 44 in the Lockout 47 of the emergency bolt 45, the emergency bolt can not be moved translationally become. This causes the emergency release 33 is blocked altogether, since the Locked emergency latches 45 no longer the driver 34 with which it is coupled, can operate.

The switching on and off of the locking device 43 is effected by an electromagnet 48, whose armature 49 is coupled to a locking slide 50. The gate valve 50 performs a translational movement, which is at right angles to the translational movement of the emergency bar 45 runs. On the gate valve 50 that pin 44 is attached, which is able to block the emergency lock 45. to translational guidance of the locking slide 50 are two guide pins fixed to the housing 51 provided.

When the electromagnet 48 is energized, it attracts the armature 49, as a result of which the armature 49 is energized Locking element serving locking slide 50 is pulled up, and its Pin 44 blocks the emergency latch 45. An emergency release 45 release in which the Pin 44 of the locking slide 50 exits the lockout 47 is therefore only possible if the electromagnet 48 is not energized.

Part of the emergency release 33 is also a plate-shaped locking fuse element 52, which the Sperrzuhaltungen and Schließzuhaltungen the Closing mechanism 39 covers the top. Through the keyhole slot 53 of the Verschlußsicherungselements 52 ensures that the key only then can be deducted when the locking mechanism is closed again. This is the locking element 52 on housing-fixed guide pin, u.a. the Guide pin 46, mounted in the vertical direction. This storage causes that the closure-securing element 52 tends, as a result of its own weight, to lower down when there is no activity. This assumes one the locking element 52 fastened driving pin 54 the one arm one acting as a mechanical transmission organ lever 55 with, the other Arm from below against the armature 47 of the electromagnet 48 is applied. Of the Lever 55 is fixed to the housing mounted on the pin 56. Therefore, lowers the locking fuse element 52 after removing the key due to his Gravity, this leads via the driving pin 54 and the lever 55 to a Push back the armature 49 of the case in this case de-energized electromagnet 48. At the same time, since armature 49 and gate valve 50 are coupled together are, the locking slide 50 pushed upwards, whereby the pin 44 is the Emergency lock 45 blocked again. In this way, therefore, when removing the Key ensures that then the emergency release is locked.

To unlock the emergency bolt 45, the solenoid 48 is actuated, whereby this pulls up the locking slide 50, and consequently the trained Recess 47, the pin 44 of the emergency bolt 45 releases.

To control the lock is preferably in the upper part of the Lock housing 1 a microprocessor 60. The microprocessor 60 is over a Interface 61 connected to a central control and monitoring unit. The central Control unit can be uniform for an entire building or corridor be, in which case further, similar locks with their microprocessors are also connected to the central control unit. The microprocessor 60 is further provided with inputs for the signals already described Button 23, 24, 25, 26 for monitoring the end positions of the Lock elements and the bolt provided. Comparable inputs exist for the signals of the already described button 31 and 32 and the button 42 of the emergency release. In addition, optional entries can be made be present, for. B. for occupant closure control and for control the removal of the keyhole cover, in order to also in these areas Immediately recognize manipulations of the lock and to the central control and Control unit to report.

The power supply 62 for microprocessor 60 and electric motor 13 takes place two-stage with 5 volts for the control and 12 volts for the motor drive. In the block diagram (Figure 2) is further shown a temperature monitoring 63 of the Interior of the lock housing, for example to detect a handling with lighters, and a display device 64. This display device can, for. B. be mounted outside over the respective door to provide a fast optical Check to allow in what operating state, the lock of the respective Door is 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 the form of several Power capacitors 65 to integrate into the lock housing 1.

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

locking mechanism

40

feather

40a

Spring for the bolt

41

cam

42

button

43

locking device

44

spigot

45

emergency bolt

46

spigot

47

recess

48

electromagnet

49

anchor

50

blocking slide

51

spigot

52

Closure fuse element

53

Keyhole slot

54

Carrier pin

55

lever

56

spigot

60

microprocessor

61

Interface to central control and monitoring unit

62

power supply

63

temperature monitoring

64

Show

65

power capacitor

Claims (17)

1. An electrically actuable lock including a latch (4), which is guided within a lock housing (1) and is actuable by means of an electric actuator (13) and a mechanically operating emergency unlocking device (33), superimposed on the electrical actuator (13), for the latch, the emergency unlocking device (33) being lockable by means of an electrically actuable blocking device (43), characterised in that a locking mechanism is a component of the emergency unlocking device and that the locking mechanism or components thereof are lockable by means of the locking device.
2. A lock as claimed in claim 1, characterised in that the emergency lock (45) is lockable by the blocking device (43), which emergency lock moves the tumblers of the locking mechanism when the locking mechanism (39) is actuated.
3. A lock as claimed in one of claims 1 or 2, characterised in that an electrically actuable blocking element (50), which locks the emergency unlocking device (33) in a first position and releases it in a second position, is a component of the blocking device (43).
4. A lock as claimed in claim 3, characterised in that the locking element (50) is actuable by means of an electromagnet (48).
5. A lock as claimed in claim 3 or 4, characterised in that the locking element (50) is a sliding stop with a direction of movement transverse to the direction of movement of the emergency latch (45).
6. A lock as claimed in one of claims 2 to 5, characterised in that the emergency latch (45) is in engagement with a carrier (34) and that the carrier (34) may be coupled to an actuating member (10) which is mounted in the lock housing (1) and is actuable by means of the electric actuator (13).
7. A lock as claimed in claim 6, characterised by a carrier element (35), which is resiliently arranged on the carrier (34) and may be coupled to the actuating member (10) in a form-locking manner.
8. A lock as claimed in one of claims 3 to 5 characterised in that the locking mechanism (39) is provided with a lock security member (52) preventing premature withdrawal of the key and that the lock security member (52) may be coupled by means of a mechanical transmission element to the blocking element (50) so as to lock the emergency unlocking device (33).
9. A lock as claimed in one of the preceding claims, characterised by an electric sensing device (42) for detection of the locking mechanism (39).
10. A lock as claimed in one of the preceding claims, which further includes:

    a blocking element (8), which is mounted in a lock housing (1) and is actuable from a locked position into an end locked position and which locks the lock in the locked position against opening;

    an actuating member (10) which is mounted in the lock housing (1) and is actuable by the electrical actuator (13) over two movement regions;

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

    a second coupling device (17a), which couples the actuating member (10) in its second movement region, to the latch (4).
11. A lock as claimed in claim 10, 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 end locked position.
12. A lock as claimed in claim 10 or 11, characterised in that the emergency unlocking device (32) may be coupled by means of the locking mechanism (39) to the actuating member (19).
13. A lock as claimed in one of claims 10 to 12, characterised in that it is connected to a central monitoring and control unit, to which further, similar locks are connectable, for the purpose of switching the electrical actuator (13) on and off and for electrically actuating the blocking device (43).
14. A lock as claimed in one of claims 10 to 13, characterised in that it is provided with a profiled cylinder (27) integrated into the lock housing (1) for switching the electrical actuator (13) on and off.
15. A lock as claimed in one of claims 13 to 14, characterised by power capacitors (48) disposed in the lock housing (1), for providing electrical energy or additional electrical energy for the actuator and the electrical actuation of the blocking device.
16. A lock as claimed in one of claims 10 to 15, 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 initially covered, starting from the locked position of the blocking element (8) and 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 firstly covered, starting from the locked position of the latch (4).
17. A lock as claimed in one of claims 10 to 16, 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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