EP3165696A1 - Lock with couplable lock follower - Google Patents

Abstract

The invention relates to a lock (1) for a door, the lock having a lockable lock nut (4) with an inner nut (4i) and an outer nut (4a), the inner nut (4i) having an inner handle and the outer nut (4a) interacts with an external handle. In order to provide a lock which enables a secure closing of a secured space even with an already actuated door handle, it is proposed that the outer nut (4a) is coupled to the inner nut (4i) via a driving lever (41) which is disposed between the outer nut (4a). and inner nut (4i) and in the uncoupled position disengages the outer nut (4a) from the inner nut (4i) by a spring (42) pivoting the cam lever (41) into a position out of engagement with a support bearing (43) and / or in that a contour of the support bearing (43) has a beveled support surface to disengage the drive lever (41) upon actuation of the outer handle.

Description

The invention relates to a lock for a door or a window or the like according to the features of the preamble of claim 1.

To secure access to the building so-called panic locks are often used in practice. These are locks that securely close the entrance to a building from the outside and at the same time allow the building to leave the building at any time. Thus, in case of emergency or in case of panic, the building can be left at any time. Such a panic lock is from the DE 10 2012 010 786 A1 known. There is shown a mortise lock with a recorded in a lock housing latch bolt and cooperating with a door handle three-piece locknut. To uncouple a door handle, the lock nut is constructed in three parts, with a center nut is permanently connected to the lock mechanism and a Coupling device either an outer or a Innennussteil can be disconnected or uncoupled.

In order to ensure a security of individual rooms in buildings, for example, a backup of classrooms in the event of a Amokalarms, it is necessary to provide a lock that allows under all circumstances, a closing of the room. As part of a hazardous situation, it may happen, for example, that vulnerable people flee into a room whose access door must be lockable under all circumstances, to prevent the ingress of unwanted persons.

It is the object of the present invention to provide a lock, which always allows a secure closing of a secured room even with already actuated door handle.

This object is achieved by a lock with the features of claim 1. It is envisaged that a nut driver is designed as a driving lever acting directly between the outer nut and the inner nut, which is either pivotably mounted at one end on the outer nut and at the other end is supported on a support bearing arranged on the inner nut, or at one end is pivotably mounted on the inner nut and at the other end is supported on a arranged on the outer nut support bearing, and the driving lever uncoupling the outer nut of the inner nut by a spring pivots the driving lever in a position out of engagement with the support bearing and / or in that the contour of the support bearing has a tapered support surface which the driving lever at Pressing the outer handle disengages. The driving lever has, so to speak a preferred position, in which the outer nut is separated from the inner nut. Even with an operation of the outside pusher, so in a situation in which a pursuer already actuates the door handle to open a secured space, a secure uncoupling of the outside pusher is made possible by the device according to the invention. As a result, a secure closing of the space to be secured is possible via the lock according to the invention even in the case of a hazardous situation caused by rampage. Jamming of the lock mechanism is prevented by an actuation of the lock mechanism causes a disengagement of the outer nut. A decoupling of the outer handle can be done for example by the operation of a recorded in the lock lock cylinder in the closing direction. For coupling the lock cylinder can be actuated in the opening direction. The lock cylinder may cooperate with a control or spool mounted within the lock housing to control uncoupling or hitching.

Inside, in this context, refers to that side of a door which is located in a secure room, for example a classroom in a school. In this context, the outer side denotes the outside of a secured room, for example a corridor or an outdoor area of a building.

The lock has a lock forend and a lock case connected to it. In the lock case, a receptacle for a lock cylinder, a detachable lock nut, a latch or a latch bolt, as well as a switchable by a lock cylinder between a disconnected position and a coupled position control are arranged.

The lockable locknut has an inner nut connectable or connected to an inner handle and an outer nut connectable to an outer handle. The control cooperates with a coupling element to uncouple and / or uncouple the outer nut. The lock nut can be designed as a two-part nut and have an inner nut and an outer nut. A nut centerpiece is not necessary. The inner nut may be permanently connected to the lock mechanism to allow any time an operation of the lock by the inner handle. In another embodiment, the inner nut can also be designed as a detachable Nussteil to selectively couple the inner handle, i. E. to connect or disconnect with the lock mechanism i. to separate from the lock mechanism.

In one embodiment, it is preferably provided that the control element is designed as a control element which can be displaced transversely to the lock forend and / or pivoted. The control is bistable, i. it is selectively switchable between the uncoupled or the engaged position. This means that the control element has a stable position both in the uncoupled position and in the engaged position has a stable position. The control is preferably received completely within the lock housing.

To accomplish a backup of the engaged position of the control, it may be provided that the control has a recess into which engages in the engaged position a resilient detent to fix the engaged position of the control. Alternatively or additionally, it can also be provided that the control element has a second recess, into which in the disengaged position a resilient catch engages to fix the disengaged position of the control.

In one embodiment it can be provided that the control element is designed as a control slide, which is slidably mounted in the lock case via a slide guide or via a slot cooperating with a pin. About a slotted guide or a slot with a pin secure guidance of the control is possible without the control can jam or hang in an intermediate position.

In one embodiment, it is preferably provided that the control actuates a coupling element which cooperates with the driving lever for coupling or uncoupling the outer nut. In particular, it can be provided that the coupling element is designed as a parallel to the forend displaceable coupling slide whose one end interacts directly with the driving lever and the other end directly to the control lever.

In order to enable a secure operation of the lock from the outside when engaged, it can be provided, for example, that the end of the coupling element cooperating with the driving lever has a supporting surface or running surface whose contour is adapted to a round contour of the lock nut. On the support surface or drain surface, the driving lever is supported in the engaged position, thereby avoiding uncoupling of the outer nut. The follower lever is urged by the support surface or drainage surface in the Eingekuppelte position.

Since the driving lever of the lock nut has a preferred position, which means uncoupling of the outer nut, the coupling element cooperates with the driving lever, that in the engaged position this remains securely engaged and thus an undesirable uncoupling of the outer nut is avoided. It can be provided in particular that the drainage surface or support surface extends over a circular portion which is equal to or larger than the maximum rotation angle of the lock nut, preferably covers a circular section in the range of a rotation angle of 15 ° to 70 °. The coupling element thus has, as it were, a sliding bearing on which the driving lever slides, which ensures uniform support of the driving lever over the entire rotational range of the lock nut and thereby ensures that the outer nut remains in the engaged position.

In one embodiment, it is preferably provided that the coupling element is connected to a clutch spring mounted in the lock case, which acts on the coupling element in the uncoupled position. About the clutch spring ensures that in uncoupled position, the coupling element is disengaged from the driving lever, or is led out of the path of the driving lever. This allows the pusher lever swing freely to decouple the outer nut from the inner nut. Ie. the coupling element is completely led out of the path of movement of the driving lever, so that it can swing out freely and thus jamming or hanging of the driving lever is not possible.

Advantageously, it can be provided that the coupling element is designed as a coupling slide, which is mounted displaceably parallel to the forend is. In the preferred installation position of the lock case, in which forend runs vertically, this means that the coupling slide is not only spring-loaded, but additionally supported by its weight in the uncoupled position is applied. This allows a particularly safe disengagement of the castle.

In one embodiment, it may be provided that the control interacts with the coupling element via a bevelled guide surface in order to displace it for coupling against the force of the coupling spring.

To open the lock from the inside, i. be made possible from the secured room at any time, it can be provided that the inner nut is permanently coupled to the trap or a trap-actuated trap mechanics.

In one embodiment, it is provided that the trap is designed as a lockable trap or as a latch bolt. The trap may be formed, for example, as a cross latch or as Kippfalle. The trap can also be designed as a spring loaded from the lock housing exclusive, so-called shooting trap. This ensures that when closing the door, the lock on the case automatically holds the door in the closed position and thus the access to the secured room, at least from the outside is no longer possible. To increase the security of the case can be locked, ie that it is not even in a mechanical attack on the case itself zurückdrückbar in the lock housing.

In order to enable a comfortable operation of the lock, it can be provided that the lock case has a change in order to unlock and / or retract the latch via both the lock cylinder and a door handle. About the change, it is possible to open the lock by means of a lock cylinder both from the outside and from the inside. Thus, an authorized person by means of a key from the outside at any time enter the secure room.

In order to allow actuation of the lock from the secure side at any time, it can be provided that in the lock cylinder receiving a lock cylinder is received, which is actuated from the inside via an inner handle, preferably a knob, and from the outside via a key. In particular, the lock cylinder does not actuate a lock bolt. It primarily controls the uncoupling or coupling of the outer nut or the outer handle.

To allow an authorized person via a key at any time access to the secured space, it can be provided that the lock cylinder has a slip clutch to separate the inner handle in a blockage. About the slip clutch is avoided that the access to the secured space from the inside can be blocked, for example, by the handle of the lock cylinder is blocked. The slip clutch allows even in case of blocking the handle on the inside from outside an opening of the lock.

In order to avoid jamming of the lock is provided in an embodiment that the lock has no lock bolt (Deadbolt). By eliminating the lock bolt eliminated many components of Lock mechanism that could otherwise possibly cause a jamming or jamming of the latch mechanism and / or the lock nut. Also, a determination or blocking of the driving lever via a screw, as is customary for example in conventional panic locks to select a panic page, is not possible in the lock according to the invention to allow at any time uncoupling of the outer nut.

Fig. 1:

eine schematische Darstellung des erfindungsgemäßen Schlosses eingebaut in einer Tür

Fig. 2:

das Schloss in einer Draufsicht mit eingekuppeltem Außendrücker

Fig. 3:

das Schloss in einer Draufsicht mit abgekuppeltem Außendrücker

Fig. 4:

eine Darstellung der kuppelbaren Schlossnuss

Fig. 5:

eine Explosionsdarstellung der Schlossnuss

Further advantages and embodiments of the invention are shown in the figures and described below. Showing:

Fig. 1:

a schematic representation of the lock according to the invention installed in a door

Fig. 2:

the lock in a plan view with engaged external handle

3:

the castle in a plan view with uncoupled outside pusher

4:

a representation of the detachable lock nut

Fig. 5:

an exploded view of the lock nut

The Figures 1-5 show a possible embodiment of the lock according to the invention 1. The same parts of the castle are each provided with the same reference characters. The Fig. 1 shows a schematic view of the lock 1 according to the invention installed in a wing of a door in a building. The lock 1 is designed as a mortise lock and sits in a tab of the door leaf. The lock is connected to two door handles, on the inside of the secured room with an internal door handle 7i and on the Outside with an exterior door handle 7a. In a lock cylinder receptacle of the lock 1, a lock cylinder 6 is added, which can be operated from the inside by means of rotary knob 61.

In a starting position, the lock 1 can be operated and opened from both sides via the door handle. From the inside, ie from the secured room, the exterior door handle 7a can be disconnected if necessary. The uncoupling is done by turning the knob 61, as in Fig. 1 shown in the direction of the arrow. This is. This makes it possible to lock the lock 1 from the secured space so that no opening of the door is possible from the outside. The uncoupling of the exterior door handle 7a is above all possible even if the exterior door handle 7a has already been operated.

In the Fig. 2 the lock 1 is shown with the lock lid removed. The lock has a lock case 12 and a lock plate 11. In the lock case 12, the elements of the lock mechanism and a passing through the forend case 2 and a passing through the forend control catch 16 are arranged. The lock case 12 has in its lower portion a receptacle 18 for a lock cylinder, not shown. Above the lock cylinder a lock nut 4 is arranged. The lock nut 4 is designed as a split lock nut and has, as in Fig. 5 shown, an inner nut 4i and an outer nut 4a on.

In the lock nut 4, a door handle can be used by means of a pusher mandrel. Above the lock nut 4, a coil spring 14 is arranged in the lock case 12, which serves as a return spring for the door handle. The lock nut 4 has a Fallenmitnehmer 44, which cooperates with the case 2 to to retract this in the lock housing 12 for unlocking. The case 2 is designed as a shooting trap and is acted upon or pushed out by a latch spring 21 out of the lock housing 12. Above the lock latch 2, a control latch 16 is arranged. The control latch 16 cooperates with a latch locking mechanism to lock the latch 2 when the door is locked. The case lock mechanism has a parallel to the forend slidable slide plate, which is for locking the case down, ie in the in Fig. 2 shown position is movable. In this case, a front edge of the slide plate is at the rear side of the case body to this and prevents the case 2 can be pushed back into the lock housing 12. As a result, a secure locking in the closed position of the door to be secured is achieved.

In order to release the lock of the lock 1 and ultimately open the door, the lock 1 can be unlocked, for example, via a locking tumbler inserted into the lock cylinder receptacle 18. In this case, a change lever 17 is actuated, via which the slide plate 22 is moved parallel to the forend upwards and thereby releases the case 2. At the same time pulls the change lever 17 via a pivot lever 17a, the case 2 in the lock housing 12 back.

An alternative way to open the lock 1 is the door inner handle 7i. The Türinnendrücker 7i is connected to the inner nut 4i. By pressing the Türinnendrückers 7i, in the Figures 2 and 3 not shown, the inner nut 4i is rotated clockwise. In this case, the slide plate 22 is lifted by a cam of the inner nut and retracted at the same time on the Fallenmitnehmer 44, the case 2 in the lock housing 12.

When the outer outer part 4a is engaged, the lock can also be opened from the outside via the door handle 7a connected to the outer nut 4a.

The locknut 4 is in the Fig. 4 shown as an assembly The lock nut 4 has a center for receiving a pusher mandrel. The inner side 4i of the lock nut is permanently connected to the lock mechanism in order to actuate the latch 2. The outer nut 4a of the two-piece lock nut 4 can be either opened or uncoupled. For coupling or uncoupling the outer part part 4a, a nut driver 41 arranged between the outer nut part 4a and the inner nut part 4i is provided. The Nutmitnehmer 41 is pivotally mounted on the Außenennussteil 4a. As in Fig. 5 is shown, the Außenennus part 4a for a pin, which engages in a bore of the Nutmitnehmers 41. The pin forms a pivot bearing for the Nutmitnehmerhebel 41. In the area of the pivot bearing is, as in Fig. 4 shown, a driver spring 42 is arranged. The driver spring 42 acts on the nut driver 41 to the outside, ie out of the lock nut 4 out.

In the Fig. 4 the engaged position of the Nutmitnehmers 41 is shown. In the coupled position, the Nutmitnehmer 41 is supported on the support bearing 43 on the inner nut 4i. As a result, the outer nut 4a is rotatably connected to the inner nut 4i via the entrainment lever 41. The driving lever 41 has in the region of the support bearing on a chamfered outer contour which is formed so that the driving lever 41 is urged by the rotation of the outer nut 4a out of engagement with the support bearing 43.

In the Fig. 2 the lock is shown with engaged outer nut. The lock 1 has a cross to the forend 11 slidably mounted Control slide 3 on. The spool 3 is slidably mounted in the lock housing 12 via a slot 32 and a pin 15. The spool 3 has at its in the Fig. 2 right end to a guide surface 33 which is inclined and cooperates with a coupling slide 5. In the in the Fig. 2 illustrated engaged position, the coupling slide 5 is supported against the force of the clutch spring 52 on the top of the spool 3 from. The spool 3 is fixed in this engaged position by a resilient catch 13. The resilient catch 13 engages in a arranged on the spool 3 recess 31 a.

The coupling slide 5 cooperates at its upper end with the Nutmitnehmer 41. The coupling slide 5 has a drainage surface 52 at its upper end. The drainage surface 51 is rounded and formed complementary to the round locknut 4. The Nut driver 41 is supported on the drainage surface, which in turn urged for engaging the Nussmitnehmer 41 against the force of the driving spring 42 against the lock nut 4. As a result, the driving lever 41 in the in the Fig. 2 or 4 Fixed coupled position shown fixed. The round configuration of the drainage surface 51 ensures that the engagement of the nut drive lever 41 with the support bearing 43 is ensured over the entire rotation angle range of the lock nut.

In the Fig. 3 the lock is shown in uncoupled position of the outer nut 4a. The spool 3 is to the left, ie displaced towards the forend 11 out. The displacement of the spool 3 via a lock cylinder, not shown. The lock cylinder is inserted in the lock cylinder receptacle 18 and engages with its locking lug in a recess of the spool. When closing, ie at Turning the lock cylinder counterclockwise, the spool 3 is displaced to the left. During the displacement of the control slide, the coupling element 5 acted upon by the clutch spring 52 slides along the inclined guide surface 33. In this case, the coupling element 5 moves away from the lock nut 4 with its upper end. The guide surface 51 releases the catch lever 41. The driver spring 42 pivots the driving lever 41 about its pivot bearing, so that it comes out of engagement with the support bearing 43. As a result, the rotationally fixed connection between the outer nut part 4a and the inner nut part 4i is canceled, so that the outer nut part 4a can rotate freely. By uncoupling the outer nut 4a, the connection of the exterior door handle 7a is released with the lock mechanism, so that the lock 1 is not open from the outside.

The uncoupling of the outer nut nut 4a is possible in any position of the lock nut 4 or the inner part or the outer part. Even if the door outer handle is already operated, it is ensured that pressed over the driver spring 42 of the cam lever 41 out of engagement and thus the nut outer part 4a is disconnected. Even if held in a danger situation with the inner door handle 7a against an externally applied opening force, so an increased clamping force occurs, it is ensured via the oblique contour of the driving lever 41 that it is pushed out of engagement with the support bearing 43 and the outer nut 4a safe from the inner nut 4i uncouples. Thus, a secure locking of the door is possible in any situation from within a secure room.

LIST OF REFERENCE NUMBERS

1

lock

11

stulp

12

lock case

13

notch

14

Return spring

15

spigot

16

Steuerfalle

17

change

18

Schließzyfinderaufnahme

2

Cases

21

case spring

22

slide plate

3

spool

31

recess

32

Long hole

33

guide surface

4

lock follower

4a

outside nut

4i

internal head

41

Nussmitnehmer

42

driver spring

43

support bearings

44

Fallenmitnehmer

5

coupling member

51

drainage area

52

clutch spring

6

lock cylinder

61

knob

7

door handles

7a

external handle

7i

inside handle

Claims (15)

Lock for a door, a window or the like, preferably an amok lock, with a lock forend (11) and a lock case (12) connected to it, in which a receptacle (18) for a lock cylinder, a lockable lock nut (4), a latch ( 2) or a latch bolt, as well as one of a lock cylinder between a disconnected position and a coupled position switchable control (3) are arranged, wherein the detachable lock nut (4) connectable to an inner handle or connected inner nut (4i) and one with an external handle connectable outer nut (4a), and the control element (3) cooperates with a coupling element (5) to uncouple and / or uncouple the outer nut (4a),
characterized,
in that a nut driver (41) is designed as a driver lever (41) engaging directly between the outer nut (4a) and the inner nut (4i), and the driver lever is either - At one end on the outer nut (4a) is pivotally mounted and at the other end of a on the inner nut (4i) arranged support bearing (43) is supported, or - At one end on the inner nut (4i) is pivotally mounted and at the other end of a on the outer nut (4a) arranged support bearing (43) is supported, and wherein the driving lever (41) has a driver spring (42) which the driving lever (41) in a position out of engagement with the support bearing (43) urges, and / or a contour of the support bearing (43) and / or cooperating with the support bearing end of the driving lever (41) is inclined to the driving lever (41) upon actuation of the outer handle out of engagement with the support bearing (43) to urge. Lock according to claim 1,
characterized,
in that the control element (3) is designed as a control element (3) displaceable and / or pivotable transversely to the lock plate (11). Lock according to claim 1 or 2,
characterized,
in that the control element (3) has a recess (31) into which a resilient detent (13) engages in the engaged position in order to fix the engaged position of the control element (3). Lock according to one of claims 1 to 3,
characterized,
in that the control element (3) is designed as a control slide which is displaceably mounted in the lock case (12) via a slide guide or via a slot (32) cooperating with a pin (15). Lock according to one of the preceding claims,
characterized,
in that the coupling element (5) is designed as a coupling slide displaceable parallel to the forend (11), one end of which directly interacts with the driving lever (41) and the other end directly with the control element (3). Lock according to one of the preceding claims,
characterized,
in that the end of the coupling element (5) cooperating with the driving lever (41) has a run-off surface (51) adapted to a round contour of the lock nut (4), on which the driving lever (41) is supported in the engaged position in order to uncouple the outer nut (4a) to avoid. Lock according to claim 6,
characterized,
that the run-off surface (51) extends over a circular section which is equal to or greater than the maximum rotational angle of the lock follower, preferably covers a circular segment in the range of a rotation angle of at least 15 °, or preferably up to 70 °. Lock according to one of the preceding claims,
characterized,
in that the coupling element (5) is connected to a coupling spring (52) mounted in the lock case (12), which acts on the coupling element (5) in the uncoupled position. Lock according to one of the preceding claims,
characterized,
in that the control element (3) interacts directly with the coupling element (5) via a beveled guide surface (33) in order to displace it for coupling against the force of the coupling spring (52). Lock according to one of the preceding claims,
characterized,
in that the inner nut (4i) is permanently coupled to the latch (2) or to a latch-actuating latch mechanism. Lock according to one of the preceding claims,
characterized,
that the latch (2) is constructed as a lockable case, in particular tilt latch or cross latch, or a latch bolt. Lock according to one of the preceding claims,
characterized,
in that the lock cylinder receiving means (18) comprises a lock cylinder (6) is received which is from the inside about an inner handle (61) and operable from the outside by a key. Lock according to one of the preceding claims,
characterized,
in that the lock cylinder (6) has a slip clutch in order to separate the inner handle (61) in the event of a blockage. Lock according to one of the preceding claims,
characterized,
in that the lock case (12) has a change in order to unlock and / or retract the latch both via the lock cylinder (6) and via a door handle. Lock according to one of the preceding claims,
characterized,
that the lock (1) has no lock bolt.

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