DK2390445T3

DK2390445T3 - Lock

Info

Publication number: DK2390445T3
Application number: DK11164874.7T
Authority: DK
Inventors: Bernd Schenkel
Original assignee: Geze Gmbh
Priority date: 2010-05-06
Filing date: 2011-05-05
Publication date: 2018-07-23
Also published as: EP2390445A3; EP2390445A2; PL2390445T3; DE102010028652B4; DE102010028652A1; EP2390445B1

Description

Lock

The invention relates to a lock according to claim 1. DE 30 32 086 A1 discloses a panic lock with a locking device controlling a lock latch and/or a lock bolt. An inner handle allows the locking device to be actuated in the opening direction in a panic situation. By means of a change-over device, which consists of a remotely controllable, electrically-, pneumatically-, or hydraulically-acting switching member, the panic function of the locking device can be switched off temporarily. DE 43 40 537 C2 discloses a panic lock which can be actuated by a key and/or by means of an actuating handle and has a divided follower, switch, tumbler, latch and latch bolt, which are arranged in a lock housing. An additional latch arranged between the latch bolt and the latch emerges, like the latch and the latch bolt against the restoring force of a spring element from an opening in the cuff. The additional latch is guided in a longitudinal slot on the bottom of the lock housing, and controls an automatic locking mechanism which is likewise arranged in the lock housing and which locks the latch and the latch bolt against being pushed back when the door is closed. An actuating handle can be coupled for unlocking by an electric switching pulse. A panic lock having the features of the preamble of claim 1 is also known from WO 2004/031517 A1. A pre-alarm is not provided before the lock is unlocked.

The object of the invention is to farther improve the safety of a panic lock.

This object is achieved according through the features of claim 1.

The lock according to the invention comprises a lock mechanism which falfils the panic function, i.e. that by actuating an actuating handle, such as a lever handle or a panic bar, both the bolt and the latch will be pulled back in the lock to enable an opening of the previously securely locked door.

The lockfurther has an arrangement forthe releasing orthe locking of the door which can be actuated electrically. As a result, it is possible to prevent an unauthorised opening of the door, but guarantees an opening of the door in case of danger. The release take place automatically, for example, through a fire alarm, as can be detected by a smoke alarm, or due to a powerfailure, if the release order operates in accordance with the closed current principle, wherein the release is blocked as long as the operating voltage is present. The release can also take place centrally, for example by one operator in a reception area, or by actuating an emergency button for opening the door. The emergency button is therefore advantageously arranged at or near the door.

An application in conjunction with an access control device is also possible, wherein the door can be opened with authorisation. A divided follower for this purpose is arranged between the actuating handle and the lock mechanism of the lock. So that an unlocking advantageously occurs, when the actuating handle is already actuated before the release takes place, an energy storage, such as a storage spring, is provided in which the energy introduced by the actuation up until the release is stored temporarily at least until the actuating handle is let go again.

It is envisioned that the lock is implemented for a one-way traffic, for example, in the case of an emergency and safety exit door, or for a two-way traffic, e.g., in connection with the access control device. For the two-way traffic, a three-part follower can be provided, each of which has a respective follower disc for each of the control handles. A control of the traffic from both sides of the door is thereby possible. Particularly in the case of a door in escape and emergency routes that are equipped with a panic bar, it is advantageous that the lock is already released when the panic bar is actuated since a letting go and repeated actuation of the panic bar might not be possible due to persons pushing from behind.

The actuating handle is connected to a handle follower which has a handle disc and a handle lever with an extension, it being possible for the handle lever to be displaced in relation to the handle disc.

The lock has a time-delay device for opening the lock and/or an alarm system. In this way, both the time delay and the alarm system are embodied in a purely mechanical manner within the lock, so that no cable routing on the door leaf is required for electrical control and/or power supply lines. If the lock is actuated for opening the door by means of the actuating handle, the alarm system can effect a signal output, for example, an alarm siren, which will deter a person who wishes to use the door without authorisation. This would also alert persons in the vicinity. It is also possible to transmit a signal to a central monitoring device, e.g., in a reception area, whereby security staff can be informed.

The time delay can be started at the same time as an alarm signal by pressing down the actuating handle. The time delay effects a delay in the opening of the lock according to a certain alarm time.

According to the invention, the time-delay consists of a damping element having a piston which is guided in a cylinder and is acted upon by a spring, wherein a traction rod is arranged on the piston, on which a driver is arranged for triggering a rocker switch for releasing the lock.

In a farther embodiment, the lock has a control device for release that operates according to the working current principle, i.e. the control device, such as an electromagnet, is energised for releasing the lock. In the unenergised starting position, the lock is blocked The control device can be connected to a fire or smoke alarm device forthe release of the lock in the event of danger, as can be provided in the case of doors in escape and emergency routes.

It can also take place by a remote control for visitor management, for example, from a reception area, or it can be connected to an electronic access control system with the control device. Furthermore, a switch can be provided in the lock which can be switched when light pressure is applied to the actuating handle and thus controls the control device for the release of the lock.

Alternatively, the control device can also operate according to the closed current principle. This is the lock is blocked when the control device, e.g., the electro-magnet, is energised. This is advantageous, since when used in a door in escape and emergency routes, the door wll automatically be released for safety in the event of a power failure. This embodiment can also have a switch, which is configured here as an opener though, and when the actuating handle is actuated, interrupts the current through the eleclromagnet to release the lock.

In a further development, the control device can have an arrangement having two electromagnets so that a mode of operation according to the closed circuit principle or the working current principle can be chosen by means of a selector switch. The selector switch can be embodied so as to effect the electrical switch-over from one electromagnet to the other.

In a further alternative design of the lock, the electromagnet is arranged outside the lock in the strike plate of the door, whereby advantageously no signal and power supply lines are required on the door leaf. In this way, the electromagnet acts directly on the magnet armature thereof arranged in the region opposite the cuff in the lock, which in turn is designed to release the lock, to which end the magnet armature interacts with a trigger that releases a rocker switch in the lock.

The rocker switch can be arranged to be adjustable by means of a selector switch, whereby in an implementation with a three-part follower it is possible forthe rocker switch to be associated with the desired follower disc and thus with the accompanying actuating handle. Independently of the release by the electromagnet, the release by the rocker switch can take place directly via the follower disc by the actuating handle. There is furthermore the possibility of placing the rocker switch in a middle position between the follower discs, whereby the release of the lock by the actuating handle is no longer possible.

In addition, a damping device can be provided, which dampens the pivoting movement of the follower disc with the result that the withdrawal of the bolt and the latch takes place with little noise.

Another implementation of the lock has a system for bypassing the storage spring, which is advantageous in opening the door in the event of a jamming of the lock, for example, due to damage or by wind pressure. Since the force to operate the lock that is available through the storage spring is limited, the actuating handle can be rigidly connected to the pressure lever by means of this system, whereby the force introduced to the actuating handle can act directly while bypassing the buffer spring on the bolt and the latch. The system for bypassing the storage spring is designed such that by releasing hold of the actuating handle, i.e., by briefly letting go and pressing the actuating handle, the direct coupling can be brought about.

The different variants can also be partially or completely combined with one another.

The dependent claims describe advantageous possible configurations of the invention. Embodiments are described below in greater detail in the drawings found in the figures. Brief description of drawings:

Fig-1 shows a side view of a lock with the lateral housing cover taken off;

Fig. 2 shows a sectional view, along the line II - II, of the cuff of the lock according to figure 1;

Fig. 3 shows a component of the follower of the lock according to figure 1;

Fig. 4 shows another component of the follower of the lock according to figure 1;

Fig. 5 shows the lock according to figure 1 with the lever handle actuated, wherein the lock is not released;

Fig. 6 shows the lock according to figure 1 with the lever handle actuated, wherein the lock is released;

Fig. 7 shows a view of a three-part follower from the cuff into the housing (the parts lying in front of the follower are not shown);

Fig. 8 shows a view of the lock according to figure 1 with a control device according to the working current principle for remote-controlled release of the lock, in the blocked state;

Fig. 9 shows the lock according to figure 8 in the released state;

Fig. 10 shows a lurther embodiment of a lock with a control device according to the closed current principle, in the blocked state;

Fig. 11 shows the lock according to figure 10 in the released state;

Fig. 12 shows a lurther embodiment of a lock according to the invention with a selector switch for control according to the closed current principle or the working current principle in a first switching state;

Fig. 13 shows the embodiment according to figure 12 in a second switching state;

Fig. 14 shows a lock according to the invention with an external control on the strike plate and an option for access and with a damping device;

Fig. 15 shows a view of the selector switch, of the lock according to figure 14, for setting the access from the cuff into the housing (the parts lying in front of the selector switch are not shown);

Fig. 16 shows the lock according to the invention with an arrangement for bypassing the storage spring in the blocked state;

Fig. 17 shows the lock according to figure 16 in the released state;

Fig. 18 shows an enlarged view of the follower disc of the lock according to figures 16 and 17;

Fig. 19 shows an enlarged view of the pressure lever of the lock according to figures 16 and 17;

Fig. 20 shows another embodiment of a lock according to the invention, having an alarm system, and a time delay for the delayed triggering of the lock in the unactuated blocked state;

Fig. 21 shows the lock according to figure 20 in the released actuated state.

The examples in the Figs. 1 through 13 and 16 through 19 are not part of the invention, but rather are objects that facilitate the understanding of the invention.

Figure 1 shows a lock 1 in the side view, with a housing 2 and a cuff 3, with which the lock 1 can be fixed in a lock mortise of a door leaf in a known manner. The housing 2 is shown open and essentially comprises a lock mechanism having a bolt mechanism 5 which fulfils the panic lunction, and when the lock 1 is actuated by an actuating handle 9, which here is configured as a lever handle, pulls back the bolt 7 of the door that is lockable in an intrusion-resistant mannervia a locking cylinder 6. The pulling backofthe bolt 7 and latch 8 is also possible by actuating the locking cylinder 6 by means of a mechanism not shown here. The actuating handle 9 is indicated in dashed lines in the figures to show the underlying parts. The lock mechanism also comprises a latch 8 which also interacts with the actuating handle 9. The bolt 7 and the latch 8 also engage in a strike plate 4 in the blocked state, which is arranged in a known manner in the door frames, or on the opposite facing door leaves in double-leaf doors.

Between the actuating handle 9 and the bolt mechanism 5 is arranged a divided follower 10. The follower 10 comprises a follower disc 11 and a pressure lever 12, which lie in the pivot axis of the actuating handle 9 and are arranged to be rotatable with respect to one another. The follower disc 11 and the pressure lever 12 are shown as a single part in Figs. 3 and 4. A seating 13 for accommodating a mandrel (not shown here) of the actuating handle 9, which is usually designed as a square, is arranged for conjoint rotation on the follower disc 11, as a result of which the follower disc 11 rotates along with the lever handle 9 in the pivot direction thereof when the actuating handle 9 pivots. For resetting the actuating handle 9, the follower disc 11 in the horizontal starting position thereof is supported with a projection 22 on a return spring 14which (notshown here in iirther detail) is supported at the other end in the housing 2. A stop 23 for the projection 22 is provided in the housing 2 for the fixing thereof in the horizontal starting position of the actuating handle 9.

The pressure lever 12 comprises two lever arms 12.1, 12.2, wherein the first lever arm 12.1 of the pressure lever 12 interacts with the latch 8. The latch 8 has a guide 24, in which a pin 25 engages for the guiding of the latch 8. The latch 8 is further supported against the lever arm 12.1 on a spring 26, which enables a pushing back of the latch 8 that is required when the door leaf is closed. A pivoting of the pressure lever 12 with the lever arm 12.1 effects a pulling back of the latch 8 in the housing 2 of the lock 1, whereby the latch 8 comes out of engagement with the strike plate 4.

The second lever arm 12.2 engages in the bolt mechanism 5 for the actuation thereof. The structure of the latch mechanism 5 is thus arbitrary and therefore is not farther shown. The pulling back of the bolt 7 into the housing 2 is triggered through pivoting of the pressure lever 12 with the lever arm 12.2 engaged in the bolt mechanism 5, and the bolt 7 comes out of engagement with the strike plate 4. A projection 22’ is lurther provided on the pressure lever 12, which in its starting position likewise comes to abut the stop 23. The return to the starting position takes place as a result of restoring forces of the bolt mechanism 5 and/or by the return spring 14 that act on the lever arm 12.2 of the pressure lever 12.

The lock 1 has an arrangement to release or to lock out the opening of the door, which can be electrically actuated, to prevent unauthorised opening of the door but to enable opening of the door in the case of a hazard.

It is advantageous to have an emergency button to on or near the door for the release thereof. Additionally or alternatively, the release can take place automatically, for example, by a fire alarm, as can be detected by a smoke alarm. If the release device operates according to the closed current principle, where the release is blocked as long as the operating voltage is present a release takes place automatically in the case of power failure. Furthermore, the release can also lake place centrally, for example by an operator in a reception area, or by an access control device, e.g., in conjunction with a card reader, etc.

The release device comprises a lug 21 provided on the pressure lever 12, which interacts with an indentation on a trigger lever 18. Alternatively, a notch can also be provided in the pressure lever 12 for engagement with the trigger lever 18. The trigger lever 18 is rotatably mounted on a bearing 20 and is accommodated in a trigger 19 when there is no release. The blocked position is shown in Fig. 1, wherein the pressure lever 12 is blocked against rotation by the release device.

For the coupling of the divided follower 10, a storage spring 15 is arranged between the follower disc 11 and the pressure lever 12 The storage spring 15 is thus partly accommodated in a recess 16 of the follower disc 11 and in a recess 17 of the pressure lever 12, as is shown in the sectional view of figure 1, along the line II—II, through the follower disc 11 and the pressure lever 12 in figure 2. The recess 16 can thus be embodied to reach completely through the follower disc 11 or only as a cavity in the follower disc 11. The recess 17 can also be embodied as a cavity in the pressure lever 12 or to reach completely through the pressure lever 12. In addition to the coil spring shown in the figures, for example, a spiral spring, plate spring, or leg spring can be used in a similar arrangement to the same effect as a storage spring 15. The return spring 14 can also be embodied accordingly. Elastomers can likewise be used as spring elements. Alternatively, also only one of the recesses 16,17 can be provided, wherein a tappet can also be provided on follower disc 11 or the pressure lever 12, which interacts with the storage spring 15, which is particularly advantageous when a spiral spring is used. In a further configuration, the storage spring 15 washer can be arranged outside the follower disc 11 and/or the pressure lever 12, at least partially encompassing same. Also conceivable is an arrangement of a plate spring, the corresponding ends of which are fixed to the follower disc 11 and the pressure lever 12.

Fig. 5 shows Ihe lock 1 with the actuating handle 9 held down, wherein there is no release of the lock 1. The follower disc 11 that connected to the actuating handle 9 in a rotationally fixed manner via the recess 13 is rotated vs. the return spring 14 in a clockwise direction into the position shown in Fig. 5. Through the partial arrangement of the storage spring 15 both in the recess 16 of the follower disc 11 as well as in the recess 17 of the pressure lever 12, the storage spring 15 is compressed by the rotation of the follower disc 11 because the pressure lever 12 is blocked from rotation in that it is supported by its lug 21 on the trigger lever 18. The energy introduced by the actuation of the actuating handle 9 for the opening of the door is thus first stored in the storage spring 15.

The release of the lock 1 for opening the door takes place by the actuated actuating handle in that the trigger 19 in Fig. 6 pivots in the counter-clockwise sense. This can be effected, for example, by switching off of one of the electromagnets, which is not Hirther shown here in the figure. In this way, the trigger lever 18 arranged to be rotatable about the bearing 20 becomes free, and the pressure lever 12 acted upon thereby is lifted from the lug 21 by the storage spring 15 in the clockwise sense. Through the now possible rotational movement of the pressure lever 12, the lever arm 12.1 pushes the latch 8 into the housing 2 of the lock 1, and in a manner not farther represented here, the lever arm 12.2 actuates the bolt mechanism 5 whereby the return of the bolt 7 into the housing 2 takes place. Since now both the bolt 7 and the latch 8 are retracted, the door is openable. The return of the trigger lever 18 back to its starting position, wherein this is accommodated in the trigger 19 takes place through the lug 21 with reverse rotation of the pressure lever 12. A three-piece follower 10 is also conceivable, wherein the respective follower discs 11, 1T are arranged on both sides of the pressure lever 12 with the associated return springs 14, 14' and storage springs 15, and connected in each case to an actuating handle 9, as shown in figure 7. Thus, for example, in connection with an access control, a control of the traffic from both sides of the door is possible, wherein the respectively assigned trigger lever 18 can be provided with trigger 19.

Figures 8 to 11 show further exemplary embodiments, wherein the lock 1 has a control device 27 for the release. Figures 8 and 9 show a control device 27, which operates according to the working flow principle, wherein an electromagnet 28 is energised to release the lock 1. The electromagnet 28 has a pivotably mounted magnet armature 29 which is acted upon by a spring 30 to return the magnet armature 29 to the initial position after the current has been switched off. The already described trigger 19 is arranged at the magnet armature 29 or is embodied to be a single piece therewith. The lock 1 is blocked in the unenergised starting position, as has already been described above in relation to the Figs. 1 through 5, wherein the trigger lever 18 is accommodated in the trigger 19.

If the electromagnet is energised, the magnet armature 29 is pivoted with the trigger 19 and the trigger lever 18 is released, as shown in Fig. 9. The power supply to the electromagnets 28 can be effected in various ways. In this way, the electromagnet 28 is connected with a fire orsmoke alarm device so that the lock 1 will be released in the event of danger, as can be designed in the case of doors in escape and emergency routes. It can also take place by remote control for visitor management, for example, from a reception area, or it can be connected to an electronic access control system with the control device 27. A switch 31 can be provided in connection with the above-mentioned devices or alone, which can be actuated even with light pressure on the actuating handle 9, and can thus charge the electromagnets 28. This can be achieved by means of a contour configured on the follower disc 11, 11' which is controlled by a switch 31 configured as a microswitch. The switch 31 can also be embodied as a reed contact switch, wherein an assigned magnet can be arranged on or in the follower disk and interacts with the reed contact switch.

When the actuating handle 9 is held down, the return of the bolt 7 and the entry of the latch 8 will then be effected. If the actuating handle 9 is actuated only after the release of the lock 1 by means of the electromagnet 28 being energised, the return of the bolt 7 and the retraction of the latch 8 is then brought about directly by means of actuation by the then already released coupling of the follower disc 11, 11' and the pressure lever 12.

In Figs. 10 and 11 is shown a control device 27 which operates according to the closed current principle. The lock 1 is thus blocked when the electromag net 28 is energised. This is advantageous since when used in a door in escape and emergency routes, the door will automatically be released for safety in the event of a power failure. Fig. 10 shows the pivotably mounted magnet armature 29 formed from two lever arms, whereby the trigger 19 is secured from pivoting with respect to the trigger lever 18. If the power supply to the electromagnets 28 is interrupted, the magnetic armature 29 will be pivoted by the spring 30, whereby the trigger lever 18 will reach out of the recess of the trigger 19 and become free, as is shown in Fig. 11. A switch 31 can also be provided in this configuration, although it is embodied here as an opener and upon actuation will interrupt the current through the electromagnets 28 for release. It is conceivable to have an additional external switch which communicates with the switch 31, whereby the function of switch 31 is controllable and a configuration of the lock is enabled.

At the magnet armature 29 is the trigger 19 that is supported against a spring 42, and is arranged to be pivotably movable. It is thus ensured that, regardless of the position of the magnet armature 29, the trigger lever 18 can snap into the trigger 19 if the trigger lever 18 is pivoted with the lug 21 into its locked position by means of relieving the actuating handle 9 and rotating back the pressure lever 12 by the return springs 14,14’.

Figures 12 and 13 show an arrangement having two electromagnets 28, 28' arranged at an angle to one another, wherein an operating mode according to the closed current principle or the working current principle can be chosen by means of a selector switch 32.

The linkage of the spring 30 can be changed by means of the rotatable selector switch 32 so that at least one of the lever arms of the magnet armature 29, here arranged at least approximately at a right angle to one another, can be acted upon in the direction of either the electromagnet 28 or the electromagnet 28'. The selector switch 32 can simultaneously bring about the electrical switching from one electromagnet to the other electromagnet 28, 28'.

Figures 14 and 15 show a lock according to the invention, wherein at least one of the electromagnets 28, 28' is disposed outside the lock 1 in the strike plate 4 of the door. The magnet armature 29 is located directly opposite to the electromagnet 28 in the area of the cuff 3. On the electromagnet 29 in turn is arranged the trigger 19 loaded with a spring 42. This embodiment further has a selection switch 33 that interacts with a rocker switch 34 which is embodied as a pivotably mounted, two-armed lever. A first lever arm interacts with the trigger 19, while the second lever arm interacts with the follower disc 11, 11’, which is designed as a cam disc, through which the rocker switch 34 is can be pivoted in relation to a spring 35. Furthermore, a projection 40 is arranged on the rocker switch 34 which engages in a pinion shaft 41 of the selector switch 33. The projection 40 of the rocker switch 34 — and thus the rocker switch 34 itself — is adjustable in its position along the pinion shaft 41 with respect to the follower disc 11, 1T by rotating the selector switch 33. In an embodiment of a lock 1 having a three-part follower, as is described in figure 7, this enables triggering of the trigger 19 to be assigned alternatively to the follower disc 11 or the follower disc 1 f and thus to the associated actuating handle 9. Independently of the release by the electromagnet 28, the rocker switch 34 can be released directly via the follower disc 11,11’ by means of the actuating handle 9. Another possibiity is to adjust the rocker switch 34 to a position outside the range of one of the follower discs 11,1T, tor example, in a middle position between the follower discs 11 and 11', so that the lock 1 can no longer be released by one of the actuating handles 9.

Fig. 14 lurthermore shows a damping device 36, which dampens the pivoting movement of the follower disc 12 with the result that the withdrawal of the bolt 7 and the latch 8 takes place with little noise. To this end, a piston 37 is guided into a cylinder 38 which has a piston rod 39 that is guided through a front wall of the cylinder 38 in a sealing manner. The piston rod 38 is connected with the pressure lever 12 and engages lever arm 12.2. Alternatively, the piston rod 39 can also engage in the area of the lever arm 12.1 or otherwise on the pressure lever 12. The damping device 36 is location independent and can, for example, be arranged vertically.

Figures 16 and 17 show a tirther embodiment of a lock 1 according to the invention, having a device for bypassing the storage spring 15. Should the lock 1 jam, for example, due to damage or wind pressure, it is possible by this system for the actuation handle 9 to be rigidly connected with the pressure lever 12, whereby the force introduced to the actuation handle 9 can act directly on the bolt 7 and the latch 8. In this way, rotational movements of the follower disc 11, 11’ and the pressure lever 12 of the divided follower 10 can be blocked with respect to one another.

When the actuating handle 9 is pressed, in the manner described above, tension is first applied to the storage spring 15, which can be released for opening by the control device 27. If, for the above reasons, opening is not possible despite the release because the spring force of the storage spring 15 is insufficient to withdraw the bolt 7 or the latch 8, the bypass of the storage spring 15 can be effected by releasing hold of the actuating handle 9.

The system for bypassing the storage spring 15 is formed by means of a pivotably arranged catch 44 that is tensioned by a spring 45. The catch 44 is arranged in the follower disc 11,11' and engages in a guide 47 of the pressure lever 12. The tensioning of the catch 44 by the spring 45 is directed outward, i.e., away from the centre of the follower disc 12. In the blocked condition of the lock 1, wherein the trigger lever 18 is accommodated in the trigger 19, the catch 44 is held down against the force of the spring 45 by a si ider 43 arranged on the trigger lever 18. If the actuating handle 9 is pressed, the catch 44 moves in the guide 47, to which end the catch 44 is stepped in the area of the guide 47, as is shown in Fig. 19. Fig. 19 shows a cross-section of the catch 44 in the plane of the pressure lever 12.

If the lock 1 is released by the control device 27, the catch 44 cannot initially pivot outwards because the when the actuating handle 9 is pressed the catch 44 is accommodated in a narrow region of the guide 47, in the right-hand area of the guide 47 in Figure 19. If the bolt 7 or latch 8 is not now withdrawn, since the spring force of the storage spring 15 is insufficient, once releasing hold of the actuating handle 9, i.e., once the actuating handle 9 is let go, the catch 44 in the vicinity of the starting position of the actuating handle 9 is in an expanded region to the left of the lug 46 in the guide 47 and can pivot outwards. Then, due to the spring 45 embodied as a leg spring, the catch 44 reaches behind the lug 46 on the pressure lever 12. Several lugs 46 can be arranged in a stepped manner, whereby releasing hold of the actuating handle 9 in several steps becomes possible.

Pressing down the actuating handle 9 again, on account of this engagement of the catch 44 on the lug 46, causes the follower disc 11,1T to be connected, i.e. coupled, directly to the pressure lever 12, excluding the storage spring 15. The force of the actuating handle 9 is thus introduced directly to the pressure lever 12 via the follower discs 11, 1T, the catch 44, and the lug 46, which pressure lever can withdraw the latch 8 and/or the bolt 7 by means of the lever arm 12.1 or 12.2. A pin 48 is also arranged, which is provided to pivot back the catch 44 inwards towards the centre of the follower discs 11, 11’ against the spring 45 when the actuating handle 9 is released. After blocking the lock 1 by the control device 27, the catch 44 is again held down by the slider 43 so that the follower disc 11,11' and the pressure lever 12 are decoupled and an actuation of the actuating handle 9 once again causes the storage spring 15 to be loaded.

Figures 20 and 21 show a forther embodiment of the lock 1 according to the invention, wherein a time delay 49 for the opening the lock 1 and an alarm system 50 are provided, as a result of which a pre-alarm is possible before opening. In this way, both the time delay 49 and the alarm system 50 are embodied within the lock 1 in a purely mechanical manner, so that no cable routing on the door leaf is required for electrical control and/or power supply lines. However, an external arrangement for the electronic time delay is also conceivable. When the lock 1 is actuated for opening the door by means of the actuating handle 9, a signal outputcan thus be effected by the alarm system 50. This can be, for example, an alarm siren, which will possibly deter a person who wishes to use the door without authorisation, or would trigger a signal to a monitoring device in a reception area, whereby security staff would be informed.

To this end, the alarm device 50 has in the lock 1 a magnet 52 that is movably delegated against a spring 51, which interacts with a magnetic field sensor 53, for example, a reed contact or a Hall element, which can be arranged in the strike plate 4 on the side of the frame. The spring 51 and the magnet 52 are managed in a sleeve 54 fixed in the lock 1. The magnet 52 is connected to a traction rod 55 that has a traction head 56 at the end thereof, which in the rest position of the actuating handle 9 bears against a projection 57 of the follower disc 11,1T sothatthe magnet 52 is displaced away from the cuff 3 against the force of the spring 51 and the magnetic field sensor 53 is not activated.

If the projection 57 of the follower disc 11, 1T pivots away clockwise on account of an actuated actuating handle 9, as shown in figure 21, the magnet 52 is moved in the direction of the cuff 3 by the spring 51 so that the magnetic field sensor 53 is activated to output a signal.

At the same time as this alarm signal is output, the time delay 49 is started by actuating the actuating handle 9, which serves to delay the time of opening the lock 1 so that the alarm is first output for a certain period of time before the opening. To this end, it is envisioned that the time delay 49 introduces into the lock mechanism the energy stored in the storage spring 15 with a delay after pressing the actuating handle 9. The purely mechanical time delay 49 consists of a damping element in a cylinder 58 with a movably arranged piston 59 on which a traction rod 60 is arranged. The traction rod 60 likewise has a traction head 56 at the end thereof which interacts with the projection 57 of the follower disc 11, 1T. On the traction rod 60 is lurthermore arranged a tappet 61, which interacts with rocker switch 34 into which it is designed to fit. It is also possible to use alternative damping elements.

If the actuating handle 9 is pressed so that the projection 57 of the follower disc 11, 1T pivots in the direction of the cuff 3, the piston 59, acted upon by the spring 62, is displaced in the cylinder 58 likewise towards the cuff 3. The piston 59 is guided with a small gap to the inner wall of the cylinder, whereby a damping of the sliding movement of the piston 59 is effected due to forced slow overflow of air from one side of the piston to the other side of the piston in the cylinder 58, to which end a borehole or a valve can be provided in the piston 59. A damping medium other than the ambient air can also be envisioned, e.g., oil. Through the sliding movement of the piston 59 and traction rod 60, after a certain period of time the tappet 61 reaches abutment with the rocker switch 34 and pivots same clockwise. As a result, the trigger 19 is actuated and the trigger lever 18 becomes free, whereby the lock 1 is now released after a time delay with respect to the actuation of the actuating handle 9, and the bolt 7 and the latch 8 are retracted.

When the actuating handle 9 is released, the return spring 14 causes the projection 57 of the follower disc 11, 1T to pivot back. As a result, the projection of 54 reaches abutment with the traction heads 56 of the traction rod 55 of the alarm system 50 and of the traction rod 60 of the time delay 49, whereby the magnet 52 and the piston 59 are each moved back to the respective starting positions thereof.

To this end, a valve arrangement can be provided in the piston 59 of the time delay 49 which permits a slight backward movement into the starting position with the actuating handle 9 unactuated, while a larger opening in the piston 59 is released.

At the same time, the tappet 61 on the traction rod 60 disengages with the rocker switch 34, whereby the re-locking of the lock 1 is enabled by the trigger lever 18 snapping into the trigger 19.

Of course, the variants shown in the various exemplary embodiments can be combined with one another.

List of Reference Symbols 1 Lock 31 Switch 2 Housing 32 Selector switch 3 Cuff 33 Selector switch 4 Strike plate 34,34' Rocker switch 5 Bolt mechanism 35 Spring 6 Locking cylinder 36 Damping element 7 Bolt 37 Piston 8 Lalch 38 Cylinder 9 Actuating handle 39 Piston rod 10 Follower 40 Projection 11,11' Followerdisc 41 Pinion shaft 12 Pressure lever 42 Spring 12.1 Lever arm 43 Slider 12.2 Lever arm 44 Catch 13 Seating 45 Spring 14,14' Return spring 46 Lug 15 Storage spring 47 Guide 16 Recess 48 Pin 17 Recess 49 Time delay 18,18' Trigger lever 50 Alarm system 19 Trigger 51 Spring 20 Bearing 52 Magnet 21 Lug 53 Magnetic field sensor 22 Projection 54 Sleeve 22' Projection 55 Traction rod 23 Stop 56 Traction head 24 Guide 57 Projection 25 Pin 58 Cylinder 26 Spring 59 Piston 27 Control device 60 Traction rod 28,28' Electromagnet 61 Tappet 29 Magnet armature 62 Spring 30 Spring

Claims

Lock

A lock (1), with a locking mechanism which controls a trap (8) and / or a bolt (7), with a control handle (9) coupled to the locking mechanism for operating the trap (8) and / or the bolt (7) by means of at least one storage spring (15), wherein the storage spring (15) is charged by operating the control handle (9) and with a release device which releases the transfer of the energy stored in the storage spring (15) to operating the locking mechanism in the opening direction, and providing a time delay (49) which, after operating the operating handle (9), delays the release of the energy stored in the bearing spring (15) for operating the locking mechanism, characterized in that the operating handle ( 9) is connected to a handle spindle (10) provided with a handle washer (11, 11 ') and a handle arm (12) which can be displaced relative to the handle washer (11,11') with an extension (57) and that the time delay (49) is formed by a damping element with a piston (59), arranged in a cylinder (58) and actuated by a spring (62), a tapping rod (60) being mounted on the piston (59) on which is arranged a driver for activating a rocker switch (34, 34 ') ) for releasing the lock 1.

Lock according to claim 1, characterized in that the drawbar (60) for the time delay (49) cooperates with the extension (57) on the handle arm (12) by means of a pull head (56), the drawbar (60) in the non-activated rest position for the actuating lever (9), the piston (59) holds against the force of the spring (62) in the cylinder (58).

Lock according to claim 1, characterized in that an alarm device (50) is provided which immediately after the operation of the control handle (9) produces a signal output.

Lock according to claim 3, characterized in that the alarm device (50) consists of a magnet (52) which is displaceably located in a sleeve (54) against the force of a spring (51) and which cooperates with a magnetic field sensor (53). ) for signal delivery.

Lock according to claim 4, characterized in that the magnetic field sensor (53) is located in the locking gaze (4) on the frame side of the door.

Lock according to claim 3 or 4, characterized in that the alarm device (50) consists of a magnet (52) which is displaceably located in a sleeve (54) against the force of a spring (51), where on the magnet (52) ) is positioned a drawbar (55) with a pull head (56) cooperating with the extension (57) on the lever arm (12), the drawbar (55) in the non-actuated resting position of the control handle (9) holding the magnet (52) against the force from the spring (51) in the sleeve (54).

A lock according to claim 3, characterized in that the actuation of the control handle (9) causes a pre-alarm, an immediate signal release from the alarm device (50) and / or a time-delayed release of the lock (1) by the time delay (49). ).

Lock according to claim 1, characterized in that the time delay (49) is designed purely mechanically.