EP3045622B1 - Locking device for a door and/or a window - Google Patents

Description

The invention relates to a locking device for a door and / or a window according to the preamble of claim 1.

There are z. B. from the EP 2 037 063 B1 Locking devices for a door and / or a window are known, which are formed with a latch ejector for a latch of a door lock, which is driven by a driven by an auxiliary power drive device between a first position and a second position. The bolt engages in the first position in a bolt receptacle and is retracted in the second position from the bolt receptacle or vice versa.

Also the DE 20 2009 015 385 U1 describes such a locking device having a simple design drive. A motor drives the latch winder in one direction to actuate a latch. In this case, a torsion spring is biased by the engine, which then immediately moved back the latch ejector after switching off the engine. A longer-term unlocking or deliberate keeping open the door is not possible with the device described.

In case of failure of the auxiliary energy is also in such locking devices often the problem that a secure locking or unlocking is not guaranteed in every case.

Object of the present invention is to provide a locking device for a door and / or a window that is universally applicable and has high reliability. In particular, the locking device should allow a secure locking and / or unlocking the door even in case of failure of the auxiliary power.

According to the invention, this object is achieved with a locking device according to the features of claim 1.

According to the invention, a locking device for a door and / or a window is proposed, with a trained as a lock box counter housing, with a bolt receiving space in which engages a latch of a lock for locking a wing of the door and / or the window, and with a Latch ejector, the driven by a drive device between a first position and a second position, wherein in the first position the latch ejector allows engagement of a latch of a lock in the latch receiving space and in the second position of the latch ejector prevents engagement of the latch of a lock in the latch receiving space, and wherein the latch ejector, when moving from the first position to the second position, displaces a latch of a latch from the latch receiving space, and wherein the drive device comprises a power operated actuator and a mechanical energy storage unit chargeable by the actuator has, wherein it is proposed that the drive device has a switchable holding element for holding and / or fixing the energy storage in its charged position.

Thus, the energy storage is held or fixed in its charged position and stores drive energy, which can be selectively accessed via the switchable holding element. With this stored energy of the energy storage can thus be done at any time an operation of the Riegelauswerfers and thus unlocking or locking the door. In particular, an actuation of the Riegelauswerfers and thus either a safe unlocking or locking the door can be done even in case of failure of the actuator or in case of power failure. This ensures increased reliability. In addition, by holding or fixing the energy storage device via the holding element, a longer-term maintenance of a locking state or an unlocking state is possible, for example in the context of a day service or an access control.

In one embodiment, the locking device can be used to secure a fire door or smoke protection door, wherein the locking device comprises a fire detector or smoke detector and the drive device is connected to the fire detector and / or the smoke detector and designed so that the drive device upon triggering a fire alarm and / or Smoke alarm solves the switchable holding element and the bolt ejector moves under discharge of the energy storage in the first position so that the bolt ejector allows engagement of a bolt of a lock in the bolt receiving space. This allows a secure locking of the door in case of fire, even if the external energy fails or power failure prevails. In particular, in conjunction with a self-locking lock arranged in or on an active leaf or a motor-lockable lock, a secure locking of the door can be achieved in the event of a fire alarm or smoke alarm.

Further, in one embodiment, the locking device may be used to secure an escape door in an escape route or escape route of a building, the locking device having an emergency button and / or a RWS terminal for triggering a panic alarm and / or unlocking the door of the escape door, the drive device having the emergency button and / or the Connected RWS terminal and is formed so that the drive device triggers the switchable holding element upon actuation of the emergency button and / or triggering a panic alarm and ejects the unloader ejecting the energy storage in the second position to eject a latch of a lock from the bolt receiving space and thus the Unlock the door. This allows a secure unlocking of the door in an emergency or panic, even if the external energy fails or power failure prevails.

The locking device can advantageously be used to secure a door, which is designed as an escape door and at the same time as a fire door or smoke protection door.

It may be provided in one embodiment to form the energy storage as a position energy storage. The position energy storage has a moving mass, which is raised in the gravitational field of the earth to store energy and gives off energy when lowering.

In a preferred embodiment of the energy storage can be designed as a spring store. Furthermore, the switchable holding element can hold and / or fix the spring store in its charged position. Preferably, the switchable holding element is designed or arranged so that it releases the spring accumulator when de-energized. The energy storage or spring accumulator has an output, which drives the latch ejector.

It may be provided in a design suitable for fire protection, that the spring accumulator or the output of the spring accumulator is designed or arranged so that it drives the latch ejector so or acted that this moves in its first position. This fire protection requirements are met by ensuring that the door is locked by a lock bolt.

In particular, a smoke detector or fire alarm can be arranged in the power supply line of the holding element and be designed so that it interrupts the power supply line or the power supply of the holding element in case of alarm, to release the energy storage or spring accumulator.

In addition, can be provided in a suitable for securing escape routes configuration that the spring accumulator or the output of the spring accumulator is designed or arranged so that it drives the Lich ejector so or acted that this moves in its second position. This allows a safe opening of the door by ensuring that the door is unlocked and can not be locked by a lock bolt.

In particular, an emergency button or an electromechanical emergency switch can be arranged in the power supply line of the holding element and designed so that it interrupts the power supply line or the power supply of the holding element in case of alarm or actuation, to release the energy storage or spring accumulator.

In particular, the locking device for panic doors and / or fire doors and / or for appropriately trained windows can be used. Preferably, the locking device automatically unlocks or locks a wing of the door and / or the window in case of interruption or failure of the auxiliary power.

The wing of the door or the window may be formed, for example, as a rotatably mounted wing, in particular as a stop wing.

The actuator is, in particular, an aggregate that can be operated with auxiliary power, for example with electric power, for example an electric motor or an electromagnet, preferably a lifting magnet, or a piezo drive.

The switchable holding element can be a mechanically or electronically or electromechanically switchable holding element, for example a switchable latching device or an electromagnet.

It can be preferably provided for fire protection concerns that the actuator and / or an output of the actuator is connected to the spring accumulator so that it charges the spring accumulator during the process of Riegelauswerfers from the first position to the second position. As a result, there is a charged spring accumulator available, the fire ejector can safely spend in fire alarm or in case of fire in the first position and thus allows engagement of the bolt in the bolt receiving space and thus locking the door or window.

It can further be provided that the switchable holding element holds the spring store in the second position of the Riegelauswerfers and / or fixed. In the second position, the latch ejector prevents engagement of the latch in the latch receiving space and thus allows opening of the door or the window.

In a further advantageous embodiment it can be provided that the spring accumulator is connected to the actuator in such a way that it supports the actuator in the process of the bolt ejector from the second position to the first position and thereby at least partially discharges.

It can further be provided that the switchable holding element holds the spring store in its charged position and / or fixed, while only the actuator moves the bolt ejector from the second position to the first position. This reduces the force required by the actuator during normal operation.

It can also be provided that only the spring accumulator or an output of the spring accumulator spends the latch ejector after releasing the switchable holding element from the second position to the first position. As a result, a secure locking of the wing is made possible in particular in case of fire by the latch of the lock can securely engage in the bolt receiving space.

In an advantageous embodiment for panic and / or escape doors can be provided that the actuator and / or an output of the actuator is connected to the spring accumulator so that it charges the spring accumulator during the process of Riegelauswerfers from the second position to the first position. As a result, a charged spring accumulator is available, which can safely spend in the second position the pan ejector in case of panic.

The switchable holding element, for example, hold the spring store in the first position of the Riegelauswerfers in a charged position and / or fix. In the first position, the latch ejector allows engagement of the latch in the latch receiving space and thus allows locking of the door or the window.

It is preferably provided that the spring accumulator is connected to the actuator in such a way that it supports the actuator during the movement of the latch ejector from the first position to the second position and thereby at least partially discharges.

It may further be provided that the retaining element holds the spring accumulator in the charged position and / or fixed, while only the actuator moves the latch ejector from the first position to the second position. This reduces the force required by the actuator during normal operation.

It can also be provided that, after releasing the retaining element, only the spring accumulator or an output of the spring accumulator moves the latch ejector from the first position to the second position. In this version, the actuator is not involved to move the latch ejector from the first position to the second position and thus does not hinder the drive through the spring accumulator.

It can be provided that the drive device is connected to the bolt ejector via a self-locking gear, in particular that the actuator and / or the spring accumulator is connected to the bolt ejector via a self-locking gear or are. Thus, an increased burglary protection is achieved by preventing the bolt ejector is simply überdrückbar.

It may further be provided that the actuator is designed as an electric lifting magnet.

In an alternative embodiment it can be provided that the actuator is designed as an electric motor, in particular as an electric motor with a rotary drive.

The locking device with electric motor can be designed so that the rotary electric motor rotates a spindle with external thread, on which a co-operating with the bolt ejector spindle nut is guided linearly displaceable.

The spring accumulator may in one embodiment have a spring formed as a torsion spring, which is connected to the rotary drive of the motor or the spindle on the one hand and a housing-fixed stop on the other.

The switchable holding element may be designed such that it blocks and / or releases a rotation of the spindle. This prevents unloading of the spring accumulator.

The switchable holding element can be designed as an electric magnet or as a current-carrying coil, in particular a magnet.

It may be provided in an embodiment that on the spindle output of the motor, a spindle nut is guided and the spindle nut has two linearly guided on the spindle parts that are selectively separable from each other and / or connected to each other, wherein a part of the spindle nut formed as an electric magnet is and the other part of the spindle nut is designed as a counter-plate cooperating with the electrically switchable magnet. The counter plate can be connected to the Latch ejector directly or via a transmission. When the magnet is switched on, the counterplate and thus the latch ejector are driven via the spindle output.

When the magnet is switched off, the counterplate is separated from the spindle drive, preferably the counterplate is movable independently of the first part of the spindle nut in the axial direction of the spindle when the holding element is switched off.

In one embodiment, a spring of the spring accumulator may be formed as a tension or compression spring and be arranged between a housing-fixed stop and the counter-plate. As a result, the spring can move the counterplate and thus the latch ejector when the magnet is switched off.

It may be provided in one embodiment that a spring of the spring accumulator is designed as a compression spring and between the first part of the spindle nut, in particular the electrically switchable magnet, and the second part of the spindle nut, in particular the counter-plate is arranged.

It can further be provided that the threaded spindle has in its interior a receiving space which is at least partially enclosed by an outer wall of the threaded spindle and the spring is arranged in this receiving space.

The threaded spindle may have in the region of the receiving space one or more recesses in its outer wall, pass through the part of the counter-plate and / or a part of the electromagnet to cooperate with the spring, or through which a connection of the spring engages to engage with the counter-plate and / or cooperate with the electromagnet.

In an advantageous embodiment it can be provided that the locking device comprises a control device, or is connected to a control device which is connected to the latch ejector or the drive means of the Riegelauswerfers and controls this. The control device may have one or more inputs to connect a sensor, such as a closing position sensor and / or a fire detector and / or smoke detector and / or a fire alarm panel. Furthermore, the control device can have one input or several inputs in order to connect an emergency button and / or an RWS terminal or escape route terminal and / or a building control center. In the presence of an alarm, the control unit controls the retaining element of the spring accumulator and / or the drive means of the Riegelauswerfers accordingly to proceed to the Riegelauswerfer in its first position or in its second position.

Furthermore, the control device can have an authorization device or be connected to an authorization device. The authorization device is designed to enter and / or verify an authorization code. The authorization device can be an access control system and / or a key switch and / or an RFID reader. The control device can be designed so that it controls a short-term or permanent activation and / or unlocking of the door in the presence of a correct or verified authorization code.

Further, the controller may be configured to enable daytime switching by moving the latch ejector to its second position for the duration of the daily shift, thereby unlocking the door.

Fig. 1 bis 4

ein erstes Ausführungsbeispiel der erfindungsgemäßen Verriegelungsvorrichtung;

Fig. 5 bis 8

ein zweites Ausführungsbeispiel der erfindungsgemäßen Verriegelungsvorrichtung;

Fig. 9 bis 12

ein drittes Ausführungsbeispiel der erfindungsgemäßen Verriegelungsvorrichtung;

Fig. 13 u. 14

Die erfindungsgemäße Verriegelungsvorrichtung, montiert an einer Tür.

The invention will now be explained in more detail with reference to exemplary embodiments. Show it

Fig. 1 to 4

a first embodiment of the locking device according to the invention;

Fig. 5 to 8

A second embodiment of the locking device according to the invention;

Fig. 9 to 12

a third embodiment of the locking device according to the invention;

Fig. 13 u. 14

The locking device according to the invention, mounted on a door.

The Fig. 1 shows a locking device 1, comprising a arranged in a housing 16 of a counter box latch receiving space 11 for a latch 21 of a door 3 mounted in a door lock 2, a Liegelauswerfer 12, a formed of an electric motor 131 and a compression spring 132 driving device 13 and one of a coil 141 and a magnetic counter-plate 142 formed holding member 14. The coil 141 has at its the magnetic counter-plate 142 opposite end portion on a coil extension 141v.

The housing 16 of the counter box can be mounted in a door frame or in a passive wing of a door resting or inserted. It interacts with a mounted in a rotary wing or active wing door lock 2 that can be designed as resting on the door lock or mortise. To achieve a secure locking is a self-locking Door lock 2 used. This means that the lock bolt 21 is automatically excluded when the wing of the door comes in the closed position. The lock bolt 21 can be driven by a motor or excluded by a spring.

In the area of the counter box, the locking device 1 has a striking plate 15, which is rigidly connected to a housing 16.

The locking device 1 is arranged in a door frame 4 so that the latch 21 of the door lock 2 and the bolt receiving space 11 of the locking device 1 are aligned with each other and the strike plate 15 is flush with the side edge of the door frame 4.

The latch ejector 12 is disposed in the latch receiving space 11 and formed as a one-armed lever with a bearing pin 121 whose axis of rotation 122 is aligned with the longitudinal axis of the journal 121. The bearing pin 121 slides in a first link 171 of a sliding block 17 which is displaceable parallel to the longitudinal extension of the striking plate 15. The Bolt ejector 12 has a gate 123 in which a loaded by a U-spring 124 guide pin 125 slides. The gate 123 is spaced from the bearing pin 121 and aligned tangentially to the pivotal arc of the Riegelauswerfers 12. The guide pin 125 engages in a second link 172 of the sliding block 17 a. Both the first link 171 and the second link 172 are Z-shaped, wherein the end portions are arranged parallel to the displacement path of the sliding block 17 and are connected by an inclined center portion. Furthermore, the two end portions of the slotted links 171 and 172 facing away from the strike plate 15 are referred to as first end sections and the two end sections of the slotted links 171 and 172 facing the strike plate 15 are referred to as second end sections.

If the slide gate 17, as in Fig. 2 is shifted by activation of the electric motor 131 described in more detail below in the direction indicated by an arrow, the bearing pin 121 of the Riegelauswerfers 12 slides from the first end portion of the first link 171 in the second end portion of the first link 171, and the guide pin 125 slides from the first end portion of the second link 172 in the second end portion of the second link 172, wherein the Riegelauswerfer 12 is pivoted about the axis of rotation 122 so that its end portion exits from the bolt receiving space 11. The Bolt ejector 12 thus drives the latch 21 of the door lock 2 from the bolt receiving space 11, so that the door 3 can be opened.

The sliding block 17 is rigidly connected to a driver 173, which cooperates with the output of an actuator or the electric motor 131. The output has a spindle gear or screw gear 133. The helical gear 133 has a tubular spindle 133s with external thread, which is rotationally rigidly connected to the output shaft of the actuator or the electric motor 131. On the spindle 133s a coil unit is mounted, consisting of a coil 141 with coil extension 141v. The coil unit 141, 141v is formed as a spindle nut. It is non-rotatably and slidably mounted in the longitudinal direction via a nose in a longitudinal groove of the housing 16 of the lock counter box. The spool unit 141, 141v has an internal thread and is moved along the spindle 133s as it rotates.

A magnetic counter-plate 142 is mounted longitudinally displaceably on the spindle 133s and connected to the driver 173. In the shaft of the spindle 133s, the pressure spring 132 formed as a helical compression spring is disposed. The compression spring 132 forms a spring accumulator 132, which is held via a switchable holding element 14 in its charged position. The switchable holding element 14 has an electromagnet acting, energizable coil 141, which cooperates with the magnetizable counter-plate 142. The Compression spring 132 is supported between the magnetic backing plate 142 and the coil extension 141v. When tensioned compression spring 132, the magnetic counter-plate 142 abuts against the coil 141. By energizing the coil 141, the counter-plate 142 is then held and the compression spring 132 remains in its tensioned position. As long as the holding element 14 or the coil 141 is energized, the magnetic counter-plate 142 is moved together with the coil unit 141, 141v and the spring accumulator remains charged.

When energized coil 141 and energized in a first direction of rotation electric motor 131, the spindle 133 is rotated in a first direction. wherein the gate 123 connected to the magnetic backing plate 142 moves toward the electric motor 131 and the bolt ejector 12 is extended as shown in FIG Fig. 2 shown. FIG. 2 shows the second position of the Riegelauswerfers, in which an engagement of a lock bolt is prevented in the bolt receiving space. Once the Riegelauswerfer 12 is fully extended, the electric motor 131 is turned off, in the Fig. 1 to 4 not shown sensors that are connected to a motor controller, not shown, trigger the shutdown of the electric motor 131.

To move the latch ejector back to the first position in FIG. 1 is shown, the electric motor 131 is operated at energized coil 141 in the opposite direction of rotation.

Fig. 3 shows the operating state with power element 14 turned off or de-energized. The coil 141 of the holding element 14 is de-energized, so that the counter-plate 142 is released and is moved by the relaxing compression spring 132 of the coil. Here, the sliding block 17 is in the in Fig. 1 shown starting position, that is, brought the first position in which the Riegelauswerfer 12 is retracted into the bolt receiving space 11. Thus, an intervention of the lock bolt is made possible in the bolt receiving space 11 and the Door or door can be locked. This function is advantageous for fire protection, as it is made possible that even in case of power failure, a closing of the door is possible.

To restore the in Fig. 1 shown initial state of the locking device 1, the coil 141 is energized again and the electric motor 131 is energized in a first rotational direction opposite the second rotational direction, so that the coil 141 is moved in the direction of the magnetic counter-plate 142. In this case, the compression spring 132 is tensioned again ( Fig. 4 ). In the end position, that is, when the pressure spring 132 is charged or the spring accumulator 13 is charged, the magnetic counter-plate 142 is again connected to the coil 141 by magnetic force and thus the spring accumulator 13 is held or fixed in its charged position.

That in the Fig.5 to 8 illustrated second embodiment differs from the embodiment described above essentially in that the compression spring 132 is disposed between the sliding block 17 and a shoulder of the formed as a motor spindle threaded screw 133s.

When moving back the sliding block 17 by energizing the electric motor 131 in the first direction of rotation, the compression spring 132 are stretched in the energized coil 141 and the latch ejector 12 is pivoted out of the bolt receiving space 11, as in Fig. 6 shown.

When the coil 141 is de-energized, the magnetic counter-plate 142 is released from the coil 141, and the compression spring 132 pushes the sliding block 17 back into its starting position, in which the latch ejector 12 rests again in the latch receiving space 11 ( Fig. 7 ).

To restore the in Fig. 5 shown initial state of the locking device 1, the coil 141 is energized again and the electric motor 131 is energized in the second direction of rotation, so that the coil 141 is moved in the direction of the magnetic counter-plate 142 and is fixed on the magnetic counter-plate 142. The compression spring 132 is still relaxed ( Fig. 8 ).

The Fig. 9 to 12 show a third embodiment of the locking device 1. Instead of the trained with a rotating output electric motor 131, a drive with linear output 131a is provided, for example, an electric linear motor or an electric pull magnet. In the in Fig. 9 to 12 illustrated embodiment, an electric linear motor 131l is provided, the output of the rotor 131a forming rotor is designed as a permanent magnet or at least one or more permanent magnets. The output 131a of the linear motor 131l is rigidly connected to the coil 141. As a force storage a tension spring 132z is provided instead of a compression spring, which is suspended on the housing 16 and on the magnetic counter-plate 142 on pins.

FIG. 9 shows the first position of the Riegelauswerfers 12, in which the lock bolt 21 can engage in the bolt receiving space.

Fig. 10 shows the second position of the Riegelauswerfers 12 in which the lock bolt 21 is pushed back into the door lock 2 and an engagement of the lock bolt is prevented in the bolt receiving space by the Riegelauswerfer 12. In FIG. 10 the coil 141 is energized, and the linear motor 131l is energized in a first linear direction. As a result, the gate 123 is moved in the direction of the linear motor 131l and trained as a coil spring tension spring 132z tensioned.

In Fig. 11 Both the coil 141 and the linear motor 131l are not energized. The tension spring 132z has brought the slotted link 17 back into its starting position, wherein the Riegelauswerfer 12 rests again in the bolt receiving space 11.

In Fig. 12 the coil 141 is energized again, and the linear motor 131l is energized in the second linear direction, so that the in Fig. 9 illustrated initial state of the locking device 1 is reached again.

In FIG. 13 the locking device 1 described in the preceding embodiments is shown mounted on a fire door 3. The fire door 3 has a belt 32 rotatably mounted stop wing. In the wing 31, a self-locking door lock 2 is mounted as a mortise lock. On the door frame of the mortise lock opposite the lock counter box 16 with the drive device 13 and the bolt receiving space 11 is mounted.

Above the door leaf 31, a fire detector 5 is attached, which is connected to the lock counter box 16 and the drive device 13. When a fire alarm triggers the fire alarm controls the latch ejector of the lock counter box so that it moves to its first position to allow engagement of the lock bolt in the bolt receiving space 11 and thus locking the door 3.

In FIG. 14 For example, the locking device 1 described in the preceding exemplary embodiments is shown mounted in an escape route of a building on an escape door 3. The escape door 3 has a belt 32 rotatably mounted stop wing 31. In the wing 31, a self-locking door lock 2 is mounted as a mortise lock. On the door frame of the mortise lock opposite the lock counter box 16 with the drive device 13 and the bolt receiving space 11 is mounted.

To a wall in the area of a door RWS terminal is 6 (R ettungs w eg s icherungs terminal) attached, which is connected to the lock strike box 16 and the drive means. 13 The RWS terminal 6 has an emergency button 61 which is connected to the lock counter box 16 and the drive means 13, respectively. Upon triggering a panic alarm by pressing the emergency button 61, the RWS terminal 6 controls the latch ejector of the lock counter box 16, so that this moves to its second position to push the lock bolt from the bolt receiving space 11 in the door lock and thus unlock the door 3. Subsequently, the door 3 can be opened via the door handle and used as an escape route to leave the building.

LIST OF REFERENCE NUMBERS

1

locking device

11

Lock receiving space

12

Riegelauswerfer

121

pivot

122

axis of rotation

123

scenery

124

U-spring

125

guide pin

13

driving device

131

electric motor

131l

electric linear motor

131

output

132

compression spring

132z

mainspring

133

helical

133s

spindle

14

retaining element

141

Kitchen sink

141v

coil extension

142

Solenoid mating plate

15

striking plate

16

Housing / counter box

17

sceneshifter

171

first backdrop

172

second backdrop

173

takeaway

2

Locks

21

bars

22

handle

3

door

31

door

32

hinge

4

door frame

5

fire alarm

6

RWS terminal

61

emergency button

Claims (15)

1. Locking device (1) for a door (3) and/or a window, having a housing (16) formed as a counter strike box, having a bolt receiving space (11), in which a bolt (21) of a lock (2) engages for the locking of a leaf (31) of the door (3) and/or of the window,
   and having a bolt ejector (12) which is movable in a driven manner by a drive device (13) between a first position and a second position,
   wherein the bolt ejector (12) enables an engagement of a bolt (21) of a lock (2) in the bolt receiving space (11) in the first position, and the bolt ejector (12) prevents an engagement of the bolt (21) of a lock (2) in the bolt receiving space (11) in the second position, and
   wherein the bolt ejector (12) displaces a bolt (21) of a lock (2) out of the bolt receiving space (11) when moving from the first position to the second position, and wherein the drive device (13) has an actuator (131, 131l) actuated by external energy and a mechanical energy storage device (132, 132z) that can be charged by the actuator (131, 131l),
   characterised in that
   the drive device (13) has a switchable holding element (14) for holding and/or fixing the energy storage device (132, 132l) in its charged position.
2. Locking device according to claim 1,
   having a fire detector (5) and/or a smoke detector, in order to trigger a fire alarm or smoke alarm in case of fire and/or in case of smoke,
   characterised in that
   the drive device (13) is connected to the fire detector (5) and/or the smoke detector and is formed in such a way that the drive device (13) releases the switchable holding element (14) when a fire alarm and/or smoke alarm is triggered and moves the bolt ejector (12) into the first position by discharging the energy storage device.
3. Locking device according to claim 1,
   having an emergency button (61) and/or an RWS-terminal (6) for triggering a panic alarm and/or unlocking the leaf (31),
   characterised in that
   the drive device (13) is connected to the emergency button (61) and/or the RWS-terminal (6) and is formed in such a way that the drive device (13) releases the switchable holding element (14) when the emergency button (61) is actuated and/or a panic alarm is triggered and moves the bolt ejector (12) into the second position by discharging the energy storage device.
4. Locking device according to one of the preceding claims,
   characterised in that
   the energy storage device is formed as a spring mechanism, and the actuator (131, 131l) actuated by external energy and/or an output of the actuator actuated by external energy is connected to the spring mechanism (132, 132z) in a such way that it charges the spring mechanism (132, 132z) when moving the bolt ejector (12) from the first position into the second position, and it is preferably provided that the spring mechanism (132, 132z) is connected to the actuator in such a way that it supports the actuator (131, 131l) when moving the bolt ejector (12) from the second position into the first position and thereby at least partially discharges.
5. Locking device according to claim 4,
   characterised in that
   the switchable holding element (14) holds and/or fixes the spring mechanism (132, 132z) in its charged position, while only the actuator (131, 131l) moves the bolt ejector (12) from the second position into the first position, and/or only the spring mechanism (132, 132z) and/or an output of the spring mechanism (132, 132z) moves the bolt ejector (12) after release of the switchable holding element (14) from the second position into the first position.
6. Locking device according to one of claims 1 to 3,
   characterised in that
   the energy storage device is formed as a spring mechanism, and the actuator (131, 131l) and/or an output of the actuator is connected to the spring mechanism (132, 132z) in a way such that that it charges the spring mechanism (132, 132z) when moving the bolt ejector (12) from the second position into the first position, wherein it is preferably provided that the spring mechanism (132, 132z) is connected to the actuator in such a way that it supports the actuator (131, 131l) during the movement of the bolt ejector (12) from the first position into the second position and thereby at least partially discharges.
7. Locking device according to claim 6,
   characterised in that
   the holding element (14) holds and/or fixes the spring mechanism (132, 132z) in a charged position, while only the actuator (131, 131l) and/or an output of the actuator moves the bolt ejector (12) from the first position into the second position, and/or, after release of the holding element (14), only the spring mechanism (132, 132z) and/or an output of the spring mechanism moves the bolt ejector (12) from the first position into the second position.
8. Locking device according to one of the preceding claims,
   characterised in that
   the drive device (13) is connected to the bolt ejector (12) via self-locking transmission (133), in particular the actuator (131) and/or the spring mechanism (132) is or are connected to the bolt ejector (12) via self-locking transmission (133).
9. Locking device according to one of the preceding claims,
   characterised in that
   the actuator is formed either as an electric solenoid, or the actuator is formed as an electric motor, in particular as an electric motor with rotary output (131), which turns a spindle (133s) with an external thread, on which a spindle nut (141, 141v) cooperating with the bolt ejector (12) is guided to be linearly shiftable.
10. Locking device according to claim 9,
    characterised in that
    the spring mechanism has a spring formed as a torsion spring, which is connected to the rotary output of the motor (131) or the spindle (133s) on one side and to a stop fixed to the housing on the other side, wherein it is preferably provided that the switchable holding element (14) blocks and/or releases a rotation of the spindle (133s).
11. Locking device according to one of the preceding claims,
    characterised in that
    the switchable holding element (14) is formed as an electric magnet, in particular a clamping magnet having a coil (141) which can be supplied with power and a counter plate (142).
12. Locking device according to one of claims 9 to 11,
    characterised in that
    the spindle nut (141, 141v) has two parts, which are selectively separable from each other and/or connectable to each other, wherein a first part of the spindle nut (141, 141v) is formed as an electric clamping magnet (141) and the second part is formed as a counter plate (142) cooperating with the magnet (141), and it is preferably provided that the counter plate (142) is connected to the bolt ejector (12) directly or via a transmission.
13. Locking device according to one of claims 9 to 12,
    characterised in that
    the counter plate (142) can be moved in the axial direction of the spindle independently of the first part of the spindle nut (133m) when the holding element (14) is switched off.
14. Locking device according to one of claims 9 to 13,
    characterised in that
    a spring of the spring mechanism is formed as a tension- or compression spring (132, 132z) and is arranged between a stop fixed to the housing and the counter plate (142), or
    a spring of the spring mechanism is formed as a compression spring (132) and is arranged between the clamping magnet (141) and the counter plate (142).
15. Locking device according to claim 14,
    characterised in that
    the threaded spindle (133s) has a receiving space on its inside, which is at least partially enclosed by an outer wall of the threaded spindle (133s), and the compression spring (132) is arranged in this receiving space, wherein it is preferably provided that the threaded spindle (133s) has one or more recesses in its outer wall in the region of the receiving space, through which recesses a part of the counter plate (142) and/or a part of the electromagnet (141) engage, in order to cooperate with the compression spring (132), or is or are connected to the compression spring (132), or through which recesses a connection of the compression spring (132) engages, in order to cooperate with the counter plate (142) and/or with the electromagnet (141), or is or are connected to the counter plate (142) and/or the electromagnet (141).

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