EP1160398A1 - 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

The invention relates to an electrically actuated lock, as z. B. in Security areas can be used. With such locks a two-stage unlocking option is desirable. In the pre-release is, preferably by a person authorized for this purpose, the blocking position of the Lifted the castle. Then in a second stage it is possible to trap the Pull the lock all the way back to open the door.

Security locks with these properties are mechanical well known. The object of the invention, in contrast, is one after The same basic principle, but electrically operated lock create an emergency operation of the lock in the event of an electrical defect or should be possible in the event of a power failure.

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.

To achieve this object, an electrically operated lock is proposed according to the invention, which has:

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

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

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

d) a first coupling device which couples the actuating part to the locking element in its first range of motion,

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

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

Such a lock is particularly suitable for use in Security areas. In addition to the bolt, part of the lock is a in which Lock housing mounted actuator, which by an electrical Drive can be actuated over two defined movement ranges. In the first Movement range is the electrically driven actuator by means of a first coupling device coupled to a locking element, d. H. the Movement of the actuating part leads to a defined movement of the Locking element. The locking element is stored in the lock housing and leaves yourself from a locked position to an unlocked position press, the lock against opening the door in the locked position is blocked.

Part of the lock according to the invention is also a second Coupling device, which the actuating part in the second Coupled range of motion with the bolt, making it sufficiently wide the lock housing can be pulled back to swing open the door to enable.

Since the movement of the actuating part in both its first and its second range of motion generated by the electric drive can a power failure or an electrical defect to a passive circuit of the Lead lock, this could no longer be operated. To an authorized one Person in an emergency, e.g. B. in the event of a fire, nevertheless a complete one To enable opening of the lock is according to the invention in the Lock housing a mechanically engageable with the actuator Emergency release arranged.

With a preferred embodiment of the lock according to the invention proposed that the locking element acts on the bolt by the Locking element mechanically blocks the bolt in the locked position against opening and releases in the unlocked position. In this configuration, there is Locking element always and completely within the lock housing. It therefore exercises does not itself function as a bolt, but works as a secondary one Blocking element, which in turn locks the bolt against opening blocked. The simple mechanical is advantageous in this embodiment Construction, as only the bolt is off in the closed position of the lock the lock housing protrudes. In contrast, the locking element is always located completely and therefore protected against manipulation within the lock housing.

To the emergency release only authorized persons, e.g. B. the Emergency unlocking is preferred to make it accessible to supervisory personnel can be coupled to the actuating part by means of a tumbler. This Tumbler is functionally completely independent and in particular separate from the electromotive means for the actuator and bolt.

An important property of the emergency release is that this electromotive part of the lock is hierarchically superimposed in every position, d. H. Actuator and latch can be in any position by the mechanical coupling elements of the emergency release capture and the lock operate mechanically in this way. This is particularly important e.g. B. in a fire or other cases in which the electrical release of the Lock does not work as intended. To achieve the mechanical Engagement of the emergency release in the actuating part regardless of it respective position it is proposed that the emergency release from a preferably pivotally mounted driver and a resilient on the Driver arranged, can be positively coupled to the actuating part Driver element exists. Due to the resilient arrangement of the Driver element on the driver creates a catching device, the one Coupling between driver and actuator regardless of position of the actuating part can bring about.

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

The lock according to the invention can be used to switch the electrical on and off Drive connected to a central control and monitoring unit to which further, similar locks can be connected. In this case it is the castle preferably with switches for detecting the position of the locking element and / or the latch, and the switches are connected to the central control and control unit connected. In this way it can be done from a central location check the operating position of each individual lock. Furthermore, Detect manipulations immediately.

Another is to detect manipulations and avoid false signals Design of the lock by separately activated switches for each End position of the locking element or the bolt marked. Only if Locking element or bolt are in one of their end positions, a Signaling. If an end position is not detected, or are in systematically contradicting end positions detected, this can be as Indication of an error or attempted manipulation and are displayed.

Preferably, the lock with means integrated in the lock housing for Provide switching on and off of the electric drive. These funds exist preferably from a cooperating with an electrical switch, commercially available locking cylinder. However, to verify the Other means of access conceivable, e.g. B. in the lock housing integrated receiver of a composed of transmitter and receiver Transponder system.

To achieve high reliability even with a large number in parallel Operated locks of an extensive locking system are in another Design in the lock housing arranged power capacitors for Provision of electrical energy or additional electrical energy for suggested the drive. In this way, e.g. B. an overload of the electrical capacity can be prevented in cases where all or one Most of the locks of the locking system are operated at the same time and therefore need electrical energy at the same time. With the help of the power capacitors is also a certain electrical emergency operation of the respective lock possible, for example in the event of a power failure.

Figur 1

Ein elektrisch betätigbares Sicherheitsschloß in Schnittdarstellung und

Figur 2

Ein Blockschaltbild zu einer Prozessoreinheit des Schlosses.

Based on an embodiment of the invention shown in the drawing, further details and advantages are explained below. Show on the drawing:

Figure 1

An electrically operated security lock in a sectional view and

Figure 2

A block diagram of a processor unit of the castle.

The electrically operated lock is in a box-shaped Lock housing 1 and can be fastened by means of a faceplate 2 in a door. By doing Lock housing 1 is a bolt 4 horizontal on guide pin 3 fixed to the housing stored. In the usual way, a bolt head 5 of the bolt protrudes from the faceplate 2 of the Lock housing out, provided the bolt 4 is in its closed position located. A trap slope 6 is formed on the locking section 5, there, as will be described in more detail below, the bolt 4 in the described embodiment also performs the function of a trap and it can therefore also be referred to as a "deadbolt trap".

About further, housing-fixed guide pin 7 is also in the lock housing a locking element 8 is mounted. In the embodiment, the locking element 8, guided by the guide pin 7, a movement transverse to the movement of the Execute bolt 4.

About further housing-fixed guide pin 9 is also in the lock housing Actuating part 10 stored. In the exemplary embodiment, the actuating part 10 a translational movement parallel to the direction of movement of the bolt 4 To run. In the drawing, the actuator 10 is about its shape and To make the structure stand out better, shown with double hatching. Man recognizes that the actuator 10 in a plane above both the Latch 4, and the locking element 8 is located. The actuator 10 is designed along one of its longitudinal edges as a rack 11, which with the last Gear 12a of a further reduction gear having gears 12 combs. The transmission is in frictional engagement 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 pivot axis fixed to the housing 15 pivotable motor mount 16. In the position shown in Figure 1 Motor carrier 16 engages the worm shaft 14 of the electric motor in a form-fitting manner the gears 12 of the reduction gear. However, if 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 a separation of the power flow between the electric motor and the Actuating part 10.

Electric motor 13, bolt 4, locking element 8 and actuating part 10 act as follows together:

From the closed position shown in Figure 1 with completely from the When the lock housing is pulled out, the bolt 4 can be retracted, by actuating the electric motor 13 via appropriate control signals. The power flow takes place via the gear consisting of the gears 12, 12a 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 actuating part 10 leads to an analog Movement of the locking element 8. For this purpose, a pin 18 is on the locking element 8 attached, which engages in a guide 19 of the actuating part 10. The leadership 19 is a forced guide in the form of a obliquely bent oblong hole executed, the first area obliquely to both the direction of movement of the Actuating part 10, as well as obliquely to the direction of movement of the locking element 8 runs. The movement of the operating part 10 therefore results due to the oblique Section of the guide 19 to an upward on the drawing Movement of the locking element 8. The locking element 8 is of its Locked position transferred to its final locked position. The latter is thereby characterized in that a blocking element 20 of the locking element 8, which first protrudes into the range of motion of the bolt 4 and therefore blocks it, is withdrawn with the locking element and thus the range of motion of the Bar 4 releases.

Over the length of the first movement range of the Actuating part 10, the bolt 4 remains in its shown in Figure 1 Starting position. Only after the first range of motion and the associated task of blocking the blocking element 20 takes that Actuating part 10 with the bolt 4. This is at the bottom of the Actuating part 10 attached a driver 21, which is against a Driver surface 22 of the bolt 4 moves. Only after completing the first Movement range of the actuating part 10 is the driver 21 on the Driving surface 22. About the subsequent second Movement range, the driver 21 then couples the movement of the bolt 4th with the rectified movement of the actuating part 10 with the result that the bolt 4 is fully retracted and the door can swing open. Driver 21 and driver surface 22 therefore form a second Coupling device 17a which, unlike the first coupling device 17 between locking element 8 and actuating part 10, exclusively via the second Movement range of the actuator 10 becomes active. About the first Movement range of the actuating part 10 is therefore unlocked the bolt 4, whereas the bolt over the second range of motion of the actuating part 10 is withdrawn. The drive for both areas of movement takes place via the Electric motor 13, but its control for the two Movement areas are strictly separated.

To detect the end positions of the locking element 8 and the bolt 4 are A total of four contacts or buttons are provided. Button 23 detects the Locked position of the locking element 8, pushbutton 24, its end locked position. Button 25 detects the bolt 4 in its extended and thus locked position, whereas button 26 detects that end position in which the bolt is at its maximum withdrawn.

In the upper part of the lock housing 1 is a preferably commercially available designed profile cylinder 27 arranged. Its cam 27a acts on you further buttons 28. The profile cylinder 27 is secured via a Screw 29, which rests with its head 30 on the faceplate 2, while the screw itself protrudes far into the lock housing 1 and there with a thread 27b of the profile cylinder 27 is screwed. Located near the end of screw 29 a housing-fixed holding 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 already after a few turns to a switch contact on the button 31, which leads to a signal output. That way 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 actuation of the bolt 4 takes place exclusively electrically via the electric motor 13. In the event of a failure of the electric motor, its control or a general power failure is to be prevented provide the lock with a mechanical emergency release 33. This consists of a pivotally arranged in the lock housing 1 Driver 34 and a spring via spring 40 on the driver 34th arranged driver element 35. The driver element 35 is with a Provided catch pin 36, which in a recess 37 of the actuating part 10th can intervene.

The mechanical drive of the driver 34 takes place via a key-operated tumbler 39, which in the lower part of the Lock housing 1 is arranged. By actuating the tumbler 39 with the corresponding key, the driver 34 can about the pivot axis 38 pivot until the driving element under pressure of the spring 40 35 with its catch pin 36 in the recess 37 of the actuating part 10 snaps in. With further movement of the driver 34, one then takes place forcibly coupling the movement of the actuating part 10 with the movement of the driver 34. As a result of the resilient mounting of the driver element 35 on the driver 34 it is ensured that the catch pin 36 in each case the recess 37 of the actuating part 10 can snap in regardless of the position in which the actuating part 10 is currently located. As soon as the positive connection between driver 34 and Actuating part 10 is made, then the actuating part 10 and thus latch 4 must also be fully retracted until the door opens. It an emergency release is possible even in cases where one electrical actuation of the bolt is no longer possible.

To reduce the mechanical forces when actuating 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 with a cam 41 of the Motor support 16 cooperates. Is by means of the tumbler 39 Driver 34 pivoted in the manner already described, this leads to the cam 41 also for pivoting the motor support 16 around it Pivot axis 15 and thus to decouple the electric motor 13 from the transmission 12, 12a and the actuating part 10.

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

To control the lock is preferably located in the upper area of the Lock housing 1 a microprocessor 43. The microprocessor 43 is a Interface connected to a central control and monitoring unit. The Central control and monitoring unit can be for an entire building or a hallway be uniform, in which case further, similar locks with their Microprocessors also to the central control and monitoring unit are connected. The microprocessor 43 is also provided with inputs for the Signals of the buttons 23, 24, 25, 26 already described for monitoring the End positions of the locking element and the bolt provided. Comparable There are inputs for the signals of the buttons 31, which have also already been described, 32, 42. There may also be optional inputs be, e.g. B. for occupant closure control and to control the expansion of Keyhole cover to prevent tampering in these areas the lock can be recognized immediately and sent to the central control and monitoring unit Report.

The voltage 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) also shows a temperature monitor 46 of the inside of the Lock housing, for example to detect handling of lighters, as well a display device 47. This display device can e.g. B. outside over the each door can be attached for quick visual inspection enable in which operating state the lock of the respective door is currently located.

When using the electrically operated lock in the context of an extensive Locking system, there may be problems with the power supply, if all locks simultaneously from the central control and monitoring unit be released. The drive power to be made available for the Electric motors 13 for unlocking the bolt 4 add up to relatively high overall performance. For such cases, but also for short-term cases Power outage may be beneficial in the form of an emergency power supply to integrate several power capacitors 48 into the lock housing 1.

The regular operation of the lock described is as follows: The basic release of the respective lock takes place centrally via the central Control and monitoring unit. The release command is issued by the microprocessor 43 converted into a control signal for the electric motor 13. This pulls over the intermediate transmission back the actuator 10, namely its first range of motion. As already described, this leads to a Actuation of the locking element 8 in its unlocked position. Then it has the beneficiary in his hand, the lock by means of his Opening the locking device fully. For this purpose, the person entitled to Available key of the profile cylinder 27 acting on the button 28 operated. The microprocessor controls on the basis of the signal from the button 28 then the electric motor 13 with respect to a complete retraction of the Latch 4 by means of the one running through its second range of motion Actuating part 10. Here, the respective operating states are reached monitored by microprocessor using buttons 23, 24, 25, 26, Error messages or messages about illogical operating states are from signals the microprocessor to the central control and monitoring unit and lead to an alarm message there.

Reference list

1

Lock housing

2nd

Forend

3rd

Guide pin

4th

bars

5

Bolt head

6

Trap slopes

7

Guide pin

8th

Locking element

9

Guide pin

10th

Actuator

11

Rack

12th

gear

12a

gear

13

Electric motor

14

Worm shaft

15

Swivel axis

16

Engine mount

17th

first coupling device

17a

second coupling device

18th

Cones

19th

guide

20th

Blocking element

21

Driver

22

Driver area

23

Button

24th

Button

25th

Button

26

Button

27

Profile cylinder

27a

cam

27b

thread

27d

Holding element

28

Button

29

screw

30th

head

31

Button

32

Button

33

Emergency release

34

Driver

35

Driver element

36

Catch pin

37

Recess

38

Swivel axis

39

Tumbler

40

feather

40a

Spring for the bolt

41

cam

42

Button

43

Microprocessor

44

Interface to the central control and monitoring unit

45

Power supply

46

Temperature monitoring

47

Show

48

Power capacitor

Claims (14)

Electrically operated lock, which has: a) a bolt (4) guided in a lock housing (1) by means of a housing-fixed guide, b) a locking element (8), which is mounted in the lock housing (1) and can be actuated from a locked position into an unlocked position and which blocks the lock against opening in the locked position, c) an actuating part (10) which is mounted in the lock housing (1) and which can be actuated by an electric drive (13) over two movement ranges, d) a first coupling device (17) which couples the actuating part (10) in its first range of motion to the locking element (8), e) a second coupling device (17a) which couples the actuating part (10) in its second range of motion with the bolt (4) and f) an emergency release (33) arranged in the lock housing (1) and mechanically engageable with the actuating part (10). Lock according to claim 1, characterized in that the locking element (8) acts on the bolt (4), the locking element (8) blocking the bolt (4) against opening in the locked position and releasing it in the unlocked position. Lock according to claim 1 or claim 2, characterized in that the emergency release (33) can be coupled to the actuating part (10) by means of a tumbler (39). Lock according to one of claims 1-3, characterized in that the emergency release (33) consists of a preferably pivotably mounted driver (34) and a driver element (35) which is arranged resiliently on the driver and can be positively coupled to the actuating part (10). Lock according to one of claims 1-4, characterized by a device which can be actuated by means of the emergency release (33) for the mechanical separation of the power flow from the electric drive (13) to the actuating part (10). Lock according to one of the preceding claims, characterized in that it is connected to a central control and monitoring unit for switching the electric drive (13) on and off, to which further, similar locks can be connected. Lock according to claim 6, characterized in that it is provided with buttons (23, 24, 25, 26) for detecting the position of the locking element (8) and / or the bolt (4), and in that the buttons (23, 24, 25, 26) are connected to the central control and monitoring unit. Lock according to claim 7, characterized by separately activatable switches (23 or 24; 25 or 26) for each end position of the locking element (8) or the bolt (4). Lock according to one of the preceding claims, characterized in that it is provided with means (27, 27a, 28) integrated in the lock housing (1) for switching the electric drive (13) on and off. Lock according to claim 9, characterized in that the means consist of a commercially available profile cylinder (27) which interacts with an electrical switch (28). Lock according to one of the preceding claims, characterized by power capacitors (48) arranged in the lock housing (1) for providing electrical energy or additional electrical energy for the drive (13). Lock according to one of the preceding claims, characterized in that the first coupling device (17) has two sections such that in the first section the locking element (8) follows the movement of the actuating part (10), while in the second section the locking element (8 ) remains in its position, the first section being the one that is first traversed starting from the blocking position of the blocking element (8). Lock according to one of the preceding claims, characterized in that the second coupling device (17a) has two sections such that in the first section the bolt (4) remains in its position, while in the second section the bolt (4) of the movement of the The actuating part (10) follows, the first section being the one that is first run through from the blocked position of the bolt (4). Lock according to one of the preceding claims, characterized in that , without a separate latch, the bolt (4) is at the same time the latch of the lock and it is provided with a slanted latch (6) at its end protruding from the lock housing (1).

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