EP2060710B1 - Lock - Google Patents

Description

The present invention relates to a lock with a lock case according to the preamble of the main claim.

Such a lock is designed to fix the case in the lock case so that anyone can open the door unhindered on doors that allow people at certain times a free access.

Such locks are used for example at the entrance doors of shops or authorities.

For this purpose, a arranged within the lock box gear coupling device, by means of which the trap can be fixed in its retracted position.

Conveniently, such gear coupling devices are designed so that the retracted trap can be fixed by a person with access authorization for this lock, in which e.g. the catchment position of the trap can only be achieved with the help of an authorized key.

From the DE 299 10 758 U1 Such a castle is known.

In this lock, the trap pulled in over the door handle by means of the lock nut is fixed by: the lock cylinder is rotated by means of an authorized access key in the direction of Aufschließbewegung.

However, since the locking lever is mounted on the latch in this lock, this lock requires a relatively large backset and is therefore not suitable for installation in tubular frame doors.

The object of the present invention is therefore to develop a lock with the features of the preamble so that it has a lockable in the retraction position case, which can be fixed with the help of an authorized key with a simple Aufschließbewegung.

This object is achieved by the invention with the features of the main claim.

From the invention there is the advantage that only a single functional surface is provided on the latch shaft to catch the case on the one hand on the normal movement of the door handle and on the other hand via an independent Aufschließbewegung means authorized key, because the change over the lock nut on the one hand on the case acts and can get over the displacement of the counter-pawl located on it with the pawl of the two-armed lever in the rear grip.

In this case, the rear handle between pawl and counter pawl is generated by the fact that the two-armed lever is placed on the lock nut in pivotal movement that its pawl of the counter pawl on the change approaches while at the same time by the lifting movement of the change due to the rotation of the key in Aufsperrrichtung the counter pawl in an area above the pawl is displaced so that the rear grip can be achieved with increasingly further pivotal movement of the change.

So it is the combination between the two-armed lever, which is set by the lock nut in pivotal movement with the lifting movement of the change due to the normal Aufschließbewegung by an authorized key, in addition to the case only a single functional surface is provided, on the one hand for both Retraction movement of the trap on the locknut as well as on the change of use finds.

Usually, the change is offset by a rotary movement of the cam of the built-in lock cylinder by means of an authorized key in the stroke movement.

Furthermore, it is proposed that the contact surface at the control end of the two-armed lever is acted upon by a control cam of the lock nut, which is arranged between the edge region facing the forend edge and the edge region of the lock nut facing the latch.

This development offers the advantage that the pawl and the counter pawl can be arranged at favorable leverage ratios below the opening adjacent to the lock nut for fixing the fitting.

In this case, pawl and counter pawl should be provided in particular in the range of the backset, ie between the forend and the axis of rotation of the lock nut and at the same time below the axis of rotation of the lock nut.

This measure offers the advantage of favorable leverage ratios and good utilization of the installation space available within the lock case.

In particular, the lock nut may be divided in a radial plane and comprise a drive part to be actuated via the door handle, on which the control cam for the control end of the two-armed lever is provided.

The second component of the lock nut is referred to as a wing part and will be operated directly from the change and beyond also act on a corresponding Nussflügel the functional surface of the case as soon as the change is put into reciprocating motion.

For this purpose, it is proposed that the wing part has a wing extending in the direction of the forend, which is acted on by a corresponding functional surface of the change, so that the hub moves the trap into its pull-in movement during a stroke movement of the change.

In this case, the two-armed lever will be under the force of a preload spring, which is directed so that the pawl end of the two-armed lever is acted upon by the counter pawl and can be displaced only by a rotation of the lock nut toward the counter pawl.

This measure has the advantage that the case can only be determined in its retracted position when the lock nut has been rotated in the direction of the opening movement and thereby displaced on its way the contact surface at the control end of the two-armed lever accordingly, so that the pawl end against could move the force of the preload spring towards the counter pawl.

It may also be advantageous if the change is supported in addition to a purely vertical lifting movement to a certain extent pivotally mounted in the lock case, so that he can approach with his counter-pawl the approaching pawl of the two-armed lever by his own pivoting movement.

This measure also serves the purpose of disengaging the rear handle of pawl and pawl when the lock of the lock is to be completed without first the detected case must be solved.

For this purpose, the change can be pivotable about a fixedly arranged on the lock case pivot point.

In addition, the change can also be arranged on a wing part and be pivotally mounted about a point of the wing part.

In addition, it is proposed that the change has a vertical movement play.

Conveniently, the rear handle of pawl and pawl is achieved in that in each case on pawl and pawl an inclined surface is formed, which drops slightly in the direction of the forend.

The mutually associated inclined surfaces of pawl and pawl namely, as soon as the rear handle is realized, stable and yet easily releasably hooked one behind the other, even if the amount by which the inclined surface drops on the counter pawl in the range between 0.1 to 0 , 3 mm.

In the following the invention will be explained in more detail by means of exemplary embodiments.

Fig.1

ein Ausführungsbeispiel der Erfindung mit festgestellter Falle;

Fig.2

die Kraftkette zum Feststellen der Falle;

Fig.3

das Lösen der Fallenfeststellung durch Schlüsseldrehung in Aufschließrichtung;

Fig.4

das Lösen der Fallenfeststellung durch Schlüsseldrehung in Abschließrichtung;

Fig.5

das Schloss bei verriegelter Tür;

Fig.6

entriegelte Tür mit ausgefahrener Falle;

Fig.7

das Erreichen der Feststellfunktion:

Show it:

Fig.1

an embodiment of the invention with detected trap;

Fig.2

the chain of force for catching the trap;

Figure 3

the release of the case detection by turning the key in Aufschließrichtung;

Figure 4

the release of the case detection by turning the key in the closing direction;

Figure 5

the lock with locked door;

Figure 6

unlocked door with extended latch;

Figure 7

the achievement of the locking function:

Unless otherwise stated below, the following description applies to all figures.

The figures show a lock 1 according to the present invention.

In a lock case 2 different workpieces are housed.

It is essential that the lock case 2 is prepared for the installation of a lock cylinder 3 with cam 4 and as essential workpieces the lock nut 5, the case 6 and the change 7 are installed.

The bolt 8 is not necessarily necessary for the invention.

The lock can therefore also be designed as a pure latch lock.

In addition, the bolt 8 can be operated in one or two-speed.

If the bolt operated single-drive a corresponding locking drive 9 is provided.

The bolt drive is acted upon in a key rotation by the cam of the lock cylinder so that the bolt with increased stroke is movable.

For this purpose, the bolt drive is in the course of the bolt movement by a guideway in the lock box insert entangled and moved so that it can follow the cam.

In this way, the bolt drive remains on a larger rotational path of the cam with the cam in engagement.

It is also essential that between the turning circle of the cam 4 of the lock cylinder 3 and the case 6, a geared coupling device is provided to the case in the example in Fig.1 to be able to determine the inserted position shown.

In this retracted position of the case, the door can be opened by anyone, without first the lock nut 5 or the lock cylinder 3 must be acted upon in the opening direction.

It is essential that the geared coupling device is formed by an interaction between a two-armed lever 10 and the change 7.

For this purpose, the two-armed lever 10 a the lock nut 5 facing the control end 11, which has a contact surface 12 which rests on a control cam 15 of the lock nut 5 and the rotation of the lock nut 5 is raised in the direction of rotation 16 for the collection of the case 6.

Further, the two-armed lever on a change 7 facing the pawl end 13 with a pawl 14, which is also facing the change 7.

If the two-armed lever is pivoted with its contact surface 12 of the control cam 15 of the lock nut 5 during rotation of the same in the direction of rotation 16 for the insertion of the case 5, he pivots simultaneously provided at his pawl end 13 pawl 14 in the direction of change. 7

Thus, the pivoted in the direction of change 7 pawl 14 of the two-armed lever 10 now in the in Fig.1 remains shown position, the counter pawl 17 must go to the change 7 in the rear handle 18 with the pawl 14.

For this purpose, the two-armed lever 10 is pivotable so far that the counter pawl 17 of the change 7 can reach above the pawl 14 of the two-armed lever 10 for the locking function, which is done by a lifting movement of the change 7 as a result of the rotation of the lock bit 4 in the unlocking direction.

In particular, this shows Figure 3 the completely raised change 7, the counter pawl 17 is seen to be located above the pawl 14.

In this case, the change has completely retracted the case 6 during its lifting movement, it now requires a pivotal movement of the two-armed lever 10 so that the pawl 14 can be found below the counter pawl 17.

Subsequently, the cam 4 of the lock cylinder 3 is displaced so that the key of the lock cylinder 3 reaches the withdrawal position, the rear handle 18 between the pawl 14 and counter pawl 17 is set up and the case 6 fixed in its retracted position.

For this purpose, however, the two-armed lever 10 must be pivoted so far that its pawl 14 comes to lie below the counter pawl 17.

In the embodiments shown, this is done by providing a control cam 15 on the lock nut 5, by means of which the control end 11 of the two-armed lever can be raised, while at the same time the latch end 1 pivots in the direction of the change.

Since the control cam 15 is provided on a part of the lock nut 5, which is independent of that part of the lock nut 5 is pivoted, which is acted upon by the change, thus the two-armed lever 10 can be pivoted completely independent of the change 7.

Therefore, only the control cam 15 has to be displaced under the control end 11 of the two-armed lever 10 in such a way that it is put into its correct pivoting movement.

Furthermore, the figures show that pawl 14 and counter pawl 17 are arranged in the area of the backset 19 and below the axis of rotation 20 of the lock nut 5.

This results in particular the advantage of a good use of space in the lock case 2 and existing for fitting mounting in the lock box 2 openings 21 remain freely accessible.

As an essential advantage of this invention, it is possible by the space-saving design of the castle, which required for installation in narrow frame profiles of tubular frame doors small mandrel sizes of only about 30 to 45 mm to realize.

The embodiment of the invention shown in the figures has a lock nut 5 divided in a radial plane.

The lock nut here has a drive part 22, which is to be operated via the (not shown) door handle.

At this drive part, the control cam 15 is suitably provided.

Furthermore, the split locknut has a wing portion 23 which has a nut wing 24 engaging the trap 6.

Wing member and drive member are movable independently of each other to some extent.

The wing part is, as in particular Fig.1 and 3 show, swung over the change 7.

For this purpose, the wing part 23 has a wing 33 which extends below the axis of rotation 20 of the lock nut in the direction of the forend 32 and - is acted upon here - on its underside by the change 7 on the stroke movement.

The above provided on the wing portion 23 nut wings 24 acts on a corresponding functional surface on the case 6 in the direction of the retraction movement, while at the same time the drive member 22 of the two-piece lock nut 5 is independent thereof.

On the other hand, however, the trap 6 can also be pulled in via the drive part 22.

For this purpose, the drive part 22 has a driver 25, which is in a circular segment opening of the wing part 23.

The driver 25 can therefore, with appropriate constellation of the workpieces of the lock case, the wing member 23 so move solely by movement of the door handle that the case 6 is retracted.

On the other hand, the wing part 23 can also draw in the other direction by the freewheel 26 in the opposite direction solely by the lifting movement of the change 7, the case 6.

Furthermore, the figures show that the two-armed lever 10 is under the force of a preload spring 27, which acts on the pawl end 13 directed away from the counter pawl 17.

Therefore, the two-armed lever 10 always assumes a clearly defined position and the locking function is virtually unmanipulable from outside the lock case 2.

Furthermore, the figures show, in particular Figure 4 in that the change 7 can also carry out a pivoting movement in addition to the purely vertically directed lifting movement.

In particular, this shows Fig.4 4 a pivoting direction 28, which can perform the change.

He sits so pivotally in the lock case 2, that between the pawl 14 and the counter pawl 17 a Pivoting movement towards or away from each other can take place.

This measure serves the purpose of being able to solve the case detection also by the fact that the latch 8 is preconnected with the key.

Namely, the change 7 is pivoted by a driving projection 34 which is provided on the tumbler 35, clockwise so that the generated by the pawl 14 and counter pawl 17 rear handle 18 of the change 7 is lifted with the two-armed lever 10.

Although in the illustrated embodiment, the change 7 is pivotable about a pivot point 29 which is firmly anchored in the lock case 2.

Alternatively, the change could also be mounted pivotably on the wing part 23.

For this purpose, it is additionally proposed that the change 7 for this case also has a slight play of movement in the vertical direction and is equipped with an additional spring which maintains the rear handle 18 even when the lock nut is rotated.

Furthermore, the training of pawl 14 and counter pawl 17 is important.

Thus, the rear handle 18 can not be solved by the biasing force of the preload spring 27, both pawl 14 and pawl 17 each have inclined surfaces 30 and 31, which fall in the direction of the forend 32.

Are in this development pawl 14 and counter pawl 17 in the mutual rear handle 18, which would have weak leg spring 27 zurückverlagern the two-armed lever 10 under a force not applied by her to its original position, which is only possible with simultaneous lifting of the change 7.

Of essential importance in relation to the invention is the fact that the release or locking of the case 6 is possible only with an authorized key, so that an unauthorized change of state is likely to be excluded.

Furthermore, since the measures according to the invention hardly require installation space, such a lock 1 can also be equipped with a foldable latch, so that such a lock can also be used for right or left hinged doors.

Furthermore, this lock can also be executed with simple means as a panic lock for escape doors.

If the latch is preconnected in such a panic lock, the door handle can be used on the inside of the room in order to retract the locked latch and then the latch without key use being required.

For this purpose, it is additionally proposed that in the lock case 2, an additional two-armed lever is arranged so that it is pivoted by the lock nut, first raises the tumbler 35 and then moves the latch from its locking position to the release position.

LIST OF REFERENCE NUMBERS

1

lock

2

lock case

3

lock cylinder

4

locking bit

5

lock follower

6

Cases

7

change

8th

bars

9

Riegel engine

10

two-armed lever

11

control end

12

contact area

13

jack end

14

pawl

15

Cam of 5

16

Direction of rotation for catching the trap

17

against pawl

18

rear grip

19

backset

20

Rotation axis of 5

21

Opening for fitting fittings

22

driving part

23

wing part

24

nut wing

25

takeaway

26

Freewheel in the opposite direction

27

preload

28

Pivoting direction of 7

29

Turning point at 2

30

Inclined surface at 14

31

Inclined surface at 17

32

stulp

33

wing

34

driving projection

35

tumbler

Claims (13)

1. A lock (1) having a lock case (2), configured for the mounting of a locking cylinder (3), and the parts that are accommodated therein, a follower (5), a latch (6), and a latch lever (7), and having a gear-driven coupling device between the turning circle of the locking cam (4) of a locking cylinder (3) and the latch (6) in order to secure the latch (6) in the inserted position, characterized in that the latch lever (7) can act upon the latch (6) via the follower (5), and that the gear-driven coupling device has the following:

   - on one side
   a two-arm lever (10), having a control end (11) that faces the follower (5) and having a catch end (13) that faces the latch lever (7), the control end having a contact surface (12) and the catch end having a catch (14), whereby the lever (10) is arranged in such a way that with its contact surface (12) it can pivot with its catch end (13) in the direction of the latch lever (7) via a control cam (15) of the follower (5) when the latter is rotated in the direction (16) of the insertion position of the latch (6) and

   - on the other side
   on the latch lever (7) a counter catch (17), which corresponds to the catch (14) on the catch end (13) of the two-arm lever (10) and which, when the latch lever (7) is lifted in a displaced position of the two-arm lever (10), can be brought into rear engagement (18) with the catch (14).
2. The lock (1) as recited in Claim 1, characterized in that the catch (14) and counter catch (17) are arranged in the area of the backset (19) and beneath the rotational axis (20) of the follower (5).
3. The lock (1) as recited in Claim 2, characterized in that the catch (14) and counter catch (17) are arranged below the opening (21) for the fastening fitting that is adjacent to the follower (5).
4. The lock (1) as recited in any of Claims 1 to 3, characterized in that the follower (5) is divided in a radial plane and it has a drive part (22), which can be activated via the door catch, and on which the drive cam (15) is provided as well as a leaf part (23) that is activated directly by the latch lever (7) and that is provided with a nut leaf (24) which directly impacts the latch (6) in the insertion direction.
5. The lock (1) as recited in Claim 4, characterized in that the leaf part (23) has a leaf (33) that is located below the rotational axis (20) in the insertion position of the lock (1) and that extends in the direction of the face plate (32), said leaf being impacted directly by the latch lever (7).
6. The lock (1) as recited in Claim 4 or 5, characterized in that the drive part (22) acts upon the leaf part (23) via a tappet (25), and the leaf part has a freewheeling motion (26) in the opposite direction of the motion of the tappet (25).
7. The lock (1) as recited in any of Claims 1 to 6, characterized in that the two-arm lever (10) is subject to the force of a preload spring (27), which drives the catch end (13) away from the counter catch (17).
8. The lock (1) as recited in any of Claims 1 to 7, characterized in that the latch lever (7) is supported so that it can move not only vertically but also with a pivoting motion in the sense of the motion of the catch (14) and counter catch (17) towards each other or away from each other.
9. The lock (1) as recited in Claim 8, characterized in that the latch lever (7) can pivot about a rotational point (29) that is fixedly arranged on the lock case.
10. The lock (1) as recited in any of Claims 4 to 8, characterized in that the latch lever (7) is supported so as to be able to pivot about a pivot point that is arranged on the leaf part (23).
11. The lock (1) as recited in Claim 10, characterized in that the latch lever (7) also has vertical play of motion.
12. The lock (1) as recited in any of Claims 1 to 11, characterized in that the rear engagement (18) is created by a beveled surface (30, 31) that is formed on the catch (14) and counter catch (17), both of which diminish in the direction of the face plate (32).
13. The lock (1) as recited in Claim 12, characterized in that the dimensions of the diminishing of the beveled surface (31) in the area where the catch (14) engages with the counter catch (17) is in the order of magnitude of 0.1 to 0.3 mm.

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