EP1842989B1 - Mortise lock - Google Patents

Abstract

A two-part locking nut has inner halves (20a) with an active link to a latch (14) and outer halves (22a) linked to the inner halves by a change-over element (30) controlled via electromechanical means (34) between coupling and releasing positions. The change-over element can be affected by electronic devices designed to check on authorization.

Description

The present invention relates to a mortise lock for a door with a lock case and guided in this, between a closed position and an open position movable latch according to the preamble of claim 1. Such a mortise lock is made DE 202 07 283 U1 known.

Doors, especially interior doors are usually provided with mortise locks, which in addition to a case also have a bolt, through which the door can be secured against unauthorized passage. The closing is usually done by the use of actuatable by means of key profile cylinder or Buntbartschlössern.

Frequently, interior doors are not subject to extreme intrusion safety requirements, but it is often desirable to impede unauthorized access to a room by preventing access, at least without destructive force. Such requirements meet conventional mortise locks with trap and key-operated bars.

Furthermore, there is a desire to control the locking and unlocking of the door by electronic means.
The advantage of electronic locks is in particular their flexibility. It is thus possible to give a person individual access authorizations for one or more rooms, for example by correspondingly coding a chip card. In case of loss or theft of one such a smart card is only a reprogramming of the locks and / or the remaining smart cards required. In conventional locks would be necessary to restore the burglar resistance of the economically much more complex replacement of several locks or even the entire locking system.

Finally, it is desirable that electronic locks can be retrofitted in exchange for mechanical locks.

The object of the invention is to provide a retrofittable mortise lock that allows in a particularly economical manner unlocking and locking a door. Furthermore, the installation and retrofitting costs should be kept to a minimum.

The object is solved by the features of claim 1.

In such a boltless mortise lock locking the door is done exclusively by the case. Due to the comparatively low requirements with regard to burglar resistance, it is sufficient to perform locking only through the latch and without an additional latch. This reduces the saving of the bolt on the one hand to be operated cost and on the other hand requires that in the lock box due to the non-existent bolt more space is available to accommodate the remaining, in particular the electronic lock components.

The case is permanently engaged via the inner half of the nut with a pusher provided on the inside of the door. Is the Umsteuerelement in a release position, an actuation of the outer half of the nut on the outer handle is not on the inner Nut half transferred. Thus, the case is not retracted to the open position and the door remains closed despite the operation of the outer handle.

Since the case is permanently in operative connection with the inner half of the nut, the lock for the inside of the door has an anti-panic function, locking in persons on this side of the door is not possible even if individual electronic means fail.

If the reversing element is moved into the coupling position after the authorization check, the outer half of the nut is now also in operative connection with the latch and opening of the door can now be accomplished by actuating the outer lever.

It should be emphasized that all means for operating the lock are arranged inside the lock case. It is therefore not necessary to install or install additional elements such as the means for checking the authorization or the power supply outside the lock case, as these find their place at a point in the lock case, which is claimed in conventional mortise locks by the locking mechanism. "Within the lock case" within the meaning of the invention, such elements are arranged, which are provided in that area of the mortise lock, which is taken in commercial locks from the profile cylinder.

The mortise lock according to the invention can thus be installed in a very simple manner with little expenditure of time, in particular in exchange for a conventional mortise lock. Additional attachments or installations or modifications on the door leaf, on the frame or on adjacent wall areas are not required.

In a preferred embodiment, the lock case has a common standard dimension. Standard dimensions, for example, for backset, distance or forend width and length are specified in DIN 18251. By complying with the standard dimensions, it is possible to equip standard-compliant doors with mortise locks according to the invention without adapting the door leaf or to retrofit already installed doors.

Preferably, the power supply designed as a battery or rechargeable battery can be accessible from outside when the lock case is mounted in a door. This makes it possible to make their replacement without costly disassembly of the lock case with empty power supply.

Preferably, the power supply can be arranged in the profile cylindrical recess. Since standard-compliant door leaves already have corresponding openings for the insertion of profile cylinders or Buntbartschlüsseln, where the power supply can be used instead. This means that in a lock according to the invention, for example, instead of the usual profile cylinder, the then accessible from the outside power supply is provided. About that In addition, it is thereby unnecessary to provide additional covers for closing the openings arranged in the door leaf or special exchange rosettes.

Alternatively, the power supply can be arranged in a recess accessible on the side of the lock box. Again, access without disassembly of the lock box is possible.

Further advantageous embodiments of the invention are listed in the dependent claims.

Fig. 1A

ein Einsteckschloss gemäß einem ersten Ausführungsbeispiel in einer perspektivischen Ansicht,

Fig. 1B

das Einsteckschloss gemäß Fig. 1A in Draufsicht, wobei sich das Umsteuerelement in einer Freigabestellung befindet und die äußere Nusshälfte betätigt ist.

Fig. 1C

das Einsteckschloss gemäß Fig. 1A in einer Draufsicht, wobei sich das Umsteuerelement in einer Koppelstellung befindet und die äußere Nusshälfte betätigt ist.

Fig. 2A

ein Einsteckschloss gemäß einem zweiten Ausführungsbeispiel in einer perspektivischen Ansicht.

Fig. 2B

das Einsteckschloss gemäß Fig. 2A, wobei sich das Umsteuerelement in einer Freigabestellung befindet und die äußere Nusshälfte betätigt ist.

Fig. 2C

das Einsteckschloss gemäß Fig. 2A in einer Draufsicht, wobei sich das Umsteuerelement in einer Koppelstellung befindet und die äußere Nusshälfte betätigt ist.

The invention will now be described by way of example with reference to the drawings. In these shows:

Fig. 1A

a mortise lock according to a first embodiment in a perspective view,

Fig. 1B

the mortise lock according to Fig. 1A in plan view, wherein the reversing element is in a release position and the outer half of the nut is actuated.

Fig. 1C

the mortise lock according to Fig. 1A in a plan view, wherein the reversing element is in a coupling position and the outer half of the nut is actuated.

Fig. 2A

a mortise lock according to a second embodiment in a perspective view.

Fig. 2B

the mortise lock according to Fig. 2A , wherein the reversing element is in a release position and the outer half of the nut is actuated.

Fig. 2C

the mortise lock according to Fig. 2A in a plan view, wherein the reversing element is in a coupling position and the outer half of the nut is actuated.

The Fig. 1A to C show a mortise lock 10a according to a first embodiment. It comprises a lock case 12a, which is shown here without an associated cover. In the lock case 12a a latch 14 is slidably disposed and biased by a latch spring 16 so that it extends through the forend 18 in the unactuated state.

Below the case 14, a two-part nut is provided, the inner half of the nut 20a is behind the outer half of the nut 22a in the viewing direction and is largely hidden by this. The outer nut half 22a has a square pusher mandrel receptacle 24, which is also present in the inner half of the nut 20a, but is not visible here. Both nut halves 20a, 22a are biased by coil springs 26a, 26b against their actuation direction. A pusher mandrel used with a lock according to the invention is basically designed in two parts, with a first part being associated with the outer half nut 22a and a second part with the inner half half 20a, so that no part of the pusher mandrel extends through both half halves 20a, 22a.

On the circumference of the inner half of the nut 20a, a driver 19 is arranged, which retracts the case 14 completely in the lock case 12a upon actuation of the inner half of the nut 20a.

On the outer half of the nut 22a a pivotable pawl 30 is arranged, which by means of a tension spring 32 in the direction of a release position ( Fig. 1B ) is biased.

Below the pawl 30, a drive 34 is arranged, which comprises a displaceable by means of a motor 38 plunger 36. The plunger 36 is displaced by the motor 38 from the drive 34 at a corresponding occasion by the electronic means, not shown here. In this case, the plunger 36 acts on the pawl 30 and pivots it from the release position ( Fig. 1B ) in the coupling position ( Fig. 1C ), in which the pawl 30 engages with a recess 40a arranged on the circumference of the inner half of the nut 20a.

The power supply to the drive 34 is effected by a battery 44 arranged in the cylindrical part of a profile-cylindrical holder 42.

In the area between the motor 38 and the faceplate 18, an electronic board 58 is provided, which carries all the necessary electronic components for driving the drive 34 and the motor 38 including a unit for recognizing an authorization code. These electronic components are electrically connected to an antenna 60 for detecting a transponder signal which is externally attached to the profile cylindrical holder 42, so that no shielding takes place through the lock case 12a. The antenna 60 is in any case attached to the outside of the door of the mortise lock according to the invention, in addition But it is also possible to provide a further antenna on the inside of the door of the profile-cylindrical holder 42 in order to be able to record an authorization from the inside of the door as well.

Fig. 1B 10 illustrates the mortise lock 10a in a state in which the outer half nut 22a is actuated by means of a pusher, not shown. The pawl 30 is here in the release position. Therefore, the rotational movement of the outer half nut 22a is not transmitted to the inner half half 20a. Therefore, there is no rotational movement of the inner half of the nut 20a and thus no operation of the case 14. The door can not be opened thus.

At the in Fig. 1C illustrated state, the pawl 30 is in its coupling position, that is, the outer half of the nut 22a is via the pawl 30 with the inner half of the nut 20a in operative connection. Thus, the operation of the outer nut half 22a shown here simultaneously causes the inner nut half 20a to rotate. About the driver 19, the case 14 is completely withdrawn into the lock case 12a and the door can be opened.

In the Fig. 2A to C is a mortise 10 b shown according to a second embodiment. A lock case 10b comprises according to the first embodiment according to FIGS Fig. 1A to C also a latch 14, a latch spring 16 and a face plate 18. A nut is in turn divided into an inner half nut 20b and an outer half nut 22b, with the inner half nut 20b in the drawings below the outer half nut 22b and being partially concealed by it ,

The two nut halves 20b, 22b each have a leg 28a or 28b which are located in different planes and do not touch each other directly even when the nut halves 20b, 22b are rotated.

Below the nut halves 20b, 22b, a pivoting arm 48 is arranged, which is pivotable about a pin 46 disposed on the lock box 12b around and biased by a spring 53 in the direction of the release position ( Fig. 2B ).

The pivot arm 48 has a slot-like, circular segment-shaped curved link 50 in which a coupling element 52 is slidably disposed. Below the pivot arm 48, a drive 34 is arranged, which according to the first embodiment has a displaceable by means of a motor 38 plunger 36 for actuating the pivot arm 48.

The motor 38 is supplied via a housed in a cuff-side battery compartment 54 battery (not visible) with power. The battery compartment 54 is closed with a battery compartment cover 56.

In the side facing away from the forend 18 of the motor 38, an electronic circuit board 58 is provided which carries all the necessary electronic components for controlling the drive 34 and the motor 38 including a unit for detecting an authorization code. These electronic components are in turn electrically connected to an antenna 60 for detecting a transponder signal, which is provided in that area of the electronic circuit board 58, in which the profile cylinder comes to rest in commercial locks. The antenna 60 is attached to a suitable holder so far outside that no shielding can be done by the lock case 12b. In any case, the antenna 60 is on the outside of the door of the mortise lock according to the invention attached, but in addition, in this embodiment, a further antenna on the inside of the door of the electronic circuit board 58 may be provided in order to detect an authorization from the inside of the door can also.

If now the pivot arm 48 is moved by means of the drive 34 from the release position into the coupling position, the coupling element 52 is located directly in the region of recesses 40b, 40c provided in the legs 28a, 28b. The length of the coupling element 52 is dimensioned such that it extends over both movement planes of the nut halves 20b, 22b. Therefore, a rotational movement of the outer half nut 22b is transmitted to the inner half half 20b. Thus, turning the outer nut half 22b only in the coupling position leads to a transmission of the rotational movement to the inner nut half 20b and thus via the driver 19 to a retraction of the case 14th

How to get in Fig. 2B can recognize the legs 28b of the outer half nut 22b in the release position when operating the outer half nut 22b does not come with the coupling element 52 and thus not with the leg 28a of the inner half half 20b in operative connection. An opening of the door by pressing the outer handle is thus not possible, while an actuation of the inner handle causes a retraction of the case 14 and thus opening of the door.

Fig. 2C represents the mortise lock 10b in the actuated state, wherein the pivot arm 48 is in the coupling position. Here it can be seen that the coupling element 52 by the leg 28b in the backdrop of the pivot arm relative to a basic position ( Fig. 2A ) has been moved and has transmitted the rotational movement of the outer half of the nut 22b via the leg 28b on the inner half of the nut 20b.

LIST OF REFERENCE NUMBERS

10a, 10b

mortise lock

12a, 12b

lock case

14

Cases

16

case spring

18

stulp

19

takeaway

20a, 20b

inner nut half

22a, 22b

outer nut half

24

Pusher pin receptacle

26a, 26b

spiral spring

28a, 28b

leg

30

pawl

32

mainspring

34

drive

36

tappet

38

engine

40a, 40b, 40c

recess

42

bracket

44

battery

46

spigot

48

swivel arm

50

scenery

52

coupling element

53

feather

54

battery

56

Battery cover

58

Electronic board

60

antenna

Claims (15)

1. A mortise lock (10a, 10b) for a door having a lock case (12a, 12b) which has a cut-out of profile cylinder shape and having a latch (14) guided therein and movable between a closed position and an open position,
   wherein the mortise lock (10a, 10b) is made boltless;
   wherein a follower split into two is provided whose inner follower half (20a, 20b) is in operative connection with the latch (14) and whose outer follower half (22a, 22b) can be coupled to the inner follower half (20a, 20b) by a reversing element (30, 48) controllable between a coupled position and a release position by means of electromechanical means (34);
   wherein the reversing element (30, 48) can be acted on by electronic means made for an authorisation check; and
   wherein the electromechanical means (34) and the electronic means are connected to a power supply (42, 54) which is provided within the lock case (12a, 12b) just like all other lock components, characterised in that
   the mortise lock has an antenna (60) which is attached at the outside to a holder (42) of profile cylinder shape arranged in the cut-out.
2. A mortise lock in accordance with claim 1, characterised in that the lock case (12a, 12b) has a usual standard dimension.
3. A mortise lock in accordance with claim 1 or claim 2, characterised in that the power supply (42, 54) made as a battery (44) or rechargeable battery is accessible from the outside with a lock case (12a, 12b) installed in a door.
4. A mortise lock in accordance with any one of the preceding claims, characterised in that the power supply (42) is arranged in the cut-out of profile cylinder shape.
5. A mortise lock in accordance with any one of the claims 1 to 3, characterised in that the power supply (54) is arranged in a recess of the lock case (12b) accessible at the face plate side.
6. A mortise lock in accordance with any one of the preceding claims, characterised in that the lock (10a, 10b) can only be brought into a locked position by a decoupling of the inner (20a, 20b) and outer (22a, 22b) follower halves.
7. A mortise lock in accordance with any one of the preceding claims, characterised in that the reversing element is a catch (30) which is pivotably arranged at the outer follower half (22a) and which engages in the coupled position into a recess (40a) or undercut provided at the periphery of the inner follower half (20a).
8. A mortise lock in accordance with claim 7, characterised in that the catch is acted on by a spring (32) which assists a restoring of the catch (30) from the coupled position into the release position on release by the electromechanical means (34).
9. A mortise lock in accordance with any one of the claims 1 to 6, characterised in that the reversing element is a pivot arm (48) having a coupling element (52) displaceable in a slot-like slotted part (50) curved in the shape of a circle segment, with the coupling being able to be established by a pivoting of the pivot arm (48) effected by means of the electromechanical means (34) about a spigot (45) arranged at the lock case.
10. A mortise lock in accordance with claim 9, characterised in that the coupling element (52) extending in the planes of both follower halves (20b, 22b) is located in the coupling position between two mutually facing recesses (40b, 40c) of the two follower halves (20b, 22b).
11. A mortise lock in accordance with claim 9 or claim 10, characterised in that the pivot arm (48) is acted on by a spring (53) which assists a restoring of the pivot arm (48) from the coupled position into the release position on a release by the electromechanical means (34).
12. A mortise lock in accordance with any one of the preceding claims, characterised in that the electromechanical means (34) include a transmission.
13. A mortise lock in accordance with any one of the preceding claims, characterised in that the electromechanical means (34) include an electric motor (38).
14. A mortise lock in accordance with any one of the claims 1 to 12, characterised in that the electromechanical means (34) include a solenoid.
15. A mortise lock in accordance with any one of the preceding claims, characterised in that the electronic means made for the
    authorisation check are made for the wireless reception of an authorisation code.

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