EP1662076A2 - Coupling device for a locking arrangement - Google Patents

Abstract

The device has two attachments (10, 40) and a spring unit (50) that eccentrically engages in the attachment (40) and loads the attachment (40) with a spring restoring force. The unit (50) is retained in a final position corresponding to a rest position of a handle. The attachments, drive shafts assigned to the attachments, and the handle are non-positively coupled with one another in an activated position of a clutch lever.

Description

The invention relates to a coupling device for a locking technique, which is arranged between a first handle and the locking technique, according to the preamble of patent claim 1.

Locking technique is understood to mean any locking device or apparatus which allows a closable or openable separation or delimitation of any two separate spaces or areas. By means of a locking technique, access to or access from one side of the latching technology to the other side of the latching technique or in both directions is prevented or released.

An application example of a locking technique is any lock, such as a door lock. The coupling device according to the invention is arranged in a door lock between a first handle of a door and the door lock. For example, in this case, the invention relates to an electronically controllable coupling device for a lock for doors and closures of all kinds. If a door is referred to below, this generally also means any device similar to a door, for example a house or room door, a closet door, a French window, a window, a gate, a container closure, a lid, and the like. Unless referred to below as a lock, this is merely to be understood as one possible application example of many for a locking technique, the invention not being limited to this specific example, but also encompassing all other conceivable locking techniques.

Such coupling devices for locking techniques serve to allow access to locked and / or secured areas or rooms only with an access authorization. Typical applications include front doors, hotel rooms, security areas in research facilities, hospitals, and the like. The electronic or electro-magnetic control of the coupling device is typically via a smart card, magnetic card, breadboard, or the like, which stores an access code. By means of a reader associated with the relevant reader, the code stored on the card is read. If the code is identified as correct, the reader emits an electrical or electro-magnetic impulse to the coupling device or interlocking technique by which an electromechanical activating device is actuated which releases the coupling device to open the door, for example by way of a released handle Lock bolt is withdrawn. For example, instead of a card reader, an access authorization code may also be entered via an alphanumeric keyboard or other equivalent means.

From DE 101 05 956 A1 and the corresponding DE 201 02 279 U1 an electronically controllable locking device for doors and gates of all kinds is known in which a locking or coupling device between a handle and the lock is arranged by driving with electrical signals establishes or releases the connection between the handle and a latch of the lock. This is achieved in particular by means of two disk-shaped drivers, of which the first driver is frictionally connected to the handle via a first drive shaft, wherein spring means engage the first driver and hold it in an end position corresponding to the rest position of the handle. The second driver is connected via a second, coaxial to the first drive shaft drive shaft rotational force fit with a drive nut of the castle. At the first driver, a rocker arm or clutch lever is pivotally connected, which can be brought by an electrically controllable drive member in an active position in which engages a projection on the rocker nose in a corresponding projection on the second driver and this entrains by operating the handle and pulls the latch or latch of the lock over the drive nut from the closed position. In the inactive position, the rocker arm does not engage in the second driver, so that upon actuation of the handle, the lock can not be opened. The rocker arm is brought into its active or inactive position by means of an eccentric mounted on a motor, which is rotatable between two end positions.

A similar locking or coupling device for door locks is known from DE 196 07 765 A1. In this case, two rotatably mounted shafts are connectable via a coupling device into an operative position, so that both shafts rotate upon rotation of a shaft, wherein the coupling device is housed outside the lock and can be plugged onto a lock nut of the lock via one of the two shafts. The activation of the coupling device takes place here using a magnet.

These known locking or coupling devices have the disadvantage that, when installed, they are designed for correct placement and alignment with respect to the locking technique, e.g. the castle, must be respected. Due to its structural design, the direction of the installation with respect to the locking technique (eg the lock) is authoritative, it is important on which side of the door to be secured area and on which side of the door while the locking or coupling device is built in front of or behind the locking technique or the lock, so either on the inside or the outside of the door. In the same way, it is decisive whether the door is hinged on the left or right and whether the lock sits on the right or left side of the door. In all known locking / coupling devices, these cooperative or interdependent orientations must be carefully considered during installation.

The invention is therefore an object of the invention to overcome these disadvantages and to provide a universally applicable locking or coupling device that can be combined with any locking technology and depending on the given arrangement and orientation of the locking technology arbitrarily in the direction required in each case Relation to the locking technology can be installed. In particular, it should be irrelevant whether the coupling device is provided for uses right, left, inside or outside. In this case, the coupling device is intended in particular also for subsequent installation or attachment in conjunction with existing locking techniques, e.g. existing locks on existing doors, be suitable.

This object is achieved by a coupling device for a locking technique, which is arranged between a first handle and the locking technique, with a substantially disc-shaped first driver, which is non-positively connected via a first drive shaft to the first handle, wherein eccentrically on the first driver attacking spring means act on the first driver with a spring restoring force and corresponding to the rest position of the first handle Hold end position, with a substantially disc-shaped second driver, which is connected via a second drive shaft whose axis of rotation is coaxial with the axis of rotation of the first drive shaft, frictionally connected to a drive nut of the locking technology and with a second handle, and with a pivotable on one of the drivers articulated clutch lever, wherein in an activated position of the clutch lever, a projection of the coupling lever engages in a recess on the respective other driver to take at least on actuation of the handle of the respective other handle associated driver. The coupling device according to the invention is characterized in that act eccentrically on the second driver spring means which act on the second driver with a spring restoring force and hold in a position of rest of the second handle corresponding end position, and that in the activated position of the clutch lever, the two drivers and the These associated first and second drive shafts and first and second handles are rotationally coupled together.

According to the invention thus a universally applicable coupling device is provided in which the installation direction and / or installation side in relation to the locking technology is irrelevant, and thus is suitable for all conceivable installation and installation variants, that is, both on the inside and the outside of a mounted door to be secured as well as right hinged or left hinged doors can be used equally.

In particular, the universal coupling device according to the invention is also suitable for retrofitting in existing doors and the like. In this case, the coupling device is housed as a compact assembly in a housing and is mounted inside the door profile in front of the lock, ie inside the door in a space between the lock and the door outer surface, where the handle (door handle) is located. Depending on the thickness and type of door, the coupling device can also be mounted on the outside of the door in front of the lock and, for example, covered by a panel.

In a preferred embodiment, the coupling device is mounted on the side of the door in front of the lock, from which an access control should be forth (outside). In such a case, the drive shaft facing the inside of the door engages in the drive nut of the lock and is connected on the other side of the lock with a handle (door handle) on the inside of the door. Here, the door is secured only from one side (outside), while the lock from the inside by means of the handle, the acts directly on the drive nut, can always be operated freely, for example to allow an escape route (so-called anti-panic function).

If an access control is to be realized in both directions of passage of the door, an identical coupling device is also mounted on the other side of the lock in or on the door in front of the lock, in the aforementioned case so on the inside of the door facing side of the castle.

In order to increase the flexibility and universal applicability of the coupling device, it is provided according to a preferred embodiment of the invention that the acting on the first and second driver spring means are formed by a single, common spring means, wherein the spring means acts on a branching device, and wherein the first and the second driver each having a holding device, which acts on the branching device.

Preferably, the branching device has a symmetrical, substantially T-shaped or double-T-shaped form on which the spring means symmetrically acts such that when the clutch lever is not activated during a rotational movement of the first driver alone or the second driver alone or with activated clutch lever a rotational movement of the rotational force-locking coupled to each other first and second driver always acts the same spring force.

In this embodiment, thus, the two handles of the door are biased by a single spring, so that this embodiment has the advantage that always a uniform or equal spring force acts when the two handles either independently in the non-activated state of the clutch lever decoupled from each actuates be moved together or in the activated state of the clutch lever by the other handle is moved when operating a handle.

In an alternative embodiment, the spring means acting on the drivers are formed by two separate spring means, one of which engages each driver. Thus, upon actuation of the handles in the non-activated state of the clutch lever, each handle is separately retracted from its respective associated spring means, while in the activated state of the clutch lever, the coupled together handles are withdrawn jointly from the two spring means, which is why In this case, the double spring force acts, provided that the two springs each have the same spring force.

For a transfer of the clutch lever from the non-activated position to the activated position activating means or drive members are provided, which are preferably controlled by electrical, magnetic or electromagnetic signals. These activating means may for example consist of an electric motor which has an eccentric rotatable between two end positions. Alternatively, the activating means may be formed by a chemical actuator or a piezoceramic actuator, which comprise an actuator which can be displaced essentially linearly between two end positions. The eccentric of the electric motor or the actuator of the actuators hold the clutch lever in the activated position in a first end position, while in a second end position release the clutch lever in the non-activated position.

Although less preferred, piezoceramic oscillators or electromagnets may also be used as alternative activators. All mentioned activating agents or driving elements are known per se in the art and commercially available on the market.

For the purposes of the present invention, the chemical actuator or the piezoceramic actuator are preferred, since they can be operated with a minimum of energy over the other mentioned drive elements and thus contribute, inter alia, to savings and operated for example with a battery instead of a mains power supply can.

Both in the chemical actuator and in the piezoceramic actuator power supply is only necessary in the form of a short-term voltage pulse, so that the actuator is moved over its travel from its one end position to its other end position. Without power supply, the actuator remains in each occupied end position, and only at a renewed voltage pulse, for example, in a polarity reversal between plus and minus, it moves to its other end position.

In the chemical actuator, a gas volume is expanded at a voltage pulse and remains in that state until a renewed voltage pulse causes compression of the gas, the gas again remaining in that state until a next voltage pulse occurs. By means of this expansion or compression of the gas becomes Actuator advanced or withdrawn in a substantially linear movement, which acts medium or directly on the clutch lever. In contrast, the eccentric (actuator) acting directly or indirectly on the clutch lever completes a rotary motion.

Preferably, the actuator of the activating means does not act directly and directly on the clutch lever. Rather, located between the actuator and the clutch lever preferably a guide or transmission device, for example in the form of a separating plate or a leaf spring, which acts on the advanced actuator and presses against the clutch lever, whereby the clutch lever is brought into its activated position. Upon actuation of the handle in the activated state of the coupling lever and thereby caused rotation of the driver, the clutch lever thus slides along this guide plate. The clutch lever is therefore not directly in contact with the actuator, so that friction between these two elements with appropriate wear and the risk of tilting or jamming is prevented.

The coupling device according to the invention for locking techniques of all kinds, especially for locks for doors and closures of all kinds, can be used as a lock with an actuator and a simple transmission, via which a locking bolt is moved, the actuator is for example rotatably arranged such that the rotational movement is transmitted to the closing operation. The coupling device according to the invention may be provided with a corresponding structural design for a multiple locking, in which, for example, a plurality of locking pins are provided over the entire height of a door, which are controlled via a suitable linkage upon actuation of a handle.

Fig. 1

zeigt eine perspektivische Ansicht einer ersten Ausführungsform einer Kupplungsvorrichtung gemäß der Erfindung.

Fig. 2a

zeigt eine Seitenansicht einer zweiten Ausführungsform einer Kupplungsvorrichtung gemäß der Erfindung.

Fig. 2b

ist eine Ansicht im Schnitt entlang der Linie B-B aus Fig. 2a.

Fig. 2c

ist eine Ansicht im Schnitt entlang der Linie A-A aus Fig. 2a.

Fig. 3 bis 5

zeigen jeweils eine der Ansicht der Fig. 2a entsprechende Ansicht, jedoch jeweils in einem anderen Betriebszustand.

Fig. 6a

zeigt eine der Fig. 2a entsprechende Ansicht, jedoch wiederum in einem anderen Betriebszustand.

Fig. 6b

ist eine Ansicht im Schnitt entlang der Linie C-C aus Fig. 6a.

Fig. 7

zeigt eine der Fig. 2a entsprechende Ansicht, jedoch wiederum in einem anderen Betriebszustand.

Fig. 8a

zeigt eine Seitenansicht eines ersten Mitnehmers für eine Kupplungsvorrichtung gemäß der Erfindung.

Fig. 8b

zeigt eine Draufsicht auf den ersten Mitnehmer der Fig. 8a von oben.

Fig. 9a

zeigt eine Seitenansicht eines zweiten Mitnehmers für eine Kupplungsvorrichtung gemäß der Erfindung.

Fig. 9b

zeigt eine Draufsicht auf den zweiten Mitnehmer der Fig. 9a von oben.

Fig. 10a

zeigt eine Seitenansicht eines Kupplungshebels für eine Kupplungsvorrichtung gemäß der Erfindung.

Fig. 10b

zeigt eine Draufsicht auf den Kupplungshebel der Fig. 10a von oben.

Further details and advantages of the invention will become apparent from the following description of embodiments of the invention with reference to the accompanying drawings.

Fig. 1

shows a perspective view of a first embodiment of a coupling device according to the invention.

Fig. 2a

shows a side view of a second embodiment of a coupling device according to the invention.

Fig. 2b

is a view in section along the line BB of Fig. 2a.

Fig. 2c

is a view in section along the line AA of Fig. 2a.

Fig. 3 to 5

each show one of the view of FIG. 2a corresponding view, but each in a different operating condition.

Fig. 6a

shows a view corresponding to Fig. 2a, but again in a different operating condition.

Fig. 6b

is a view in section along the line CC of Fig. 6a.

Fig. 7

shows a view corresponding to Fig. 2a, but again in a different operating condition.

Fig. 8a

shows a side view of a first driver for a coupling device according to the invention.

Fig. 8b

shows a plan view of the first driver of Fig. 8a from above.

Fig. 9a

shows a side view of a second driver for a coupling device according to the invention.

Fig. 9b

shows a plan view of the second carrier of Fig. 9a from above.

Fig. 10a

shows a side view of a clutch lever for a coupling device according to the invention.

Fig. 10b

shows a plan view of the clutch lever of Fig. 10a from above.

Figures 1 and 2a show two different embodiments of a coupling device 1 for a locking technique, for example, a lock (not shown) for doors or the like. The coupling device is surrounded by a housing 5 and designed as an assembly for installation in doors. For the purposes of the explanation, it is assumed in the present case by way of example that in FIG. 1 the outside of the door to be locked is located above the illustrated coupling device, while below Coupling device and parallel to this, the door lock is arranged. On the other side of the door lock is then the inside of the door. In a corresponding manner, the door outer side should be located in FIG. 2a above the plane of the drawing, while the door lock is arranged below or next to the plane behind the plane of the drawing, with the inside of the door behind it. This assignment "inside / outside" is present, however, only as an example and not to be understood as mandatory, since the coupling device according to the invention is universally designed for applications inside, outside, right, left and can be interchanged between these orientations.

Fig. 1 shows for a first embodiment of the coupling device 1, two mutually parallel, substantially disc-shaped carrier 10, 40, which have in their center an opening through which in each case a drive shaft 12, 42 extends, which in the present case formed as a square bar is. At the other end of the respective drive shaft 12, 42 is in each case a handle (not shown) mounted, for example in the form of a door handle, a knob or the like. The first driver 10 is thus frictionally connected via the first drive shaft 12 to a first handle, while the second driver 40 via the second drive shaft 42 whose axis of rotation 44 is coaxial with the axis of rotation 14 of the first drive shaft 12, frictionally connected to a drive nut of the lock ( not shown) and a second handle is connected.

In the embodiment according to FIG. 1, each of the first driver 10 and the second driver 40 is eccentrically engaged by spring or biasing means in the form of a respective tension spring 20, 50 corresponding to the first driver 10 in a rest position of the first handle End position holds, and holds in a corresponding manner the second driver 40 in one of the rest position of the second handle corresponding end position.

The tension springs 20, 50 of the first driver 10 and the second driver 40 are arranged parallel to each other and in the same direction of action, and they preferably each have the same spring constant or spring force. Both the first and the second driver 10, 40 each have a holding device 16, 46, for example in the form of a hole-bolt connection or a hook-shaped projection on which the tension spring 20, 50 engages with its one end. At the other end of the tension springs 20, 50, a holding device 62 is provided, for example in the form of a holding bolt connected to the housing 5, whereby the springs are fixed at this end.

If the first driver 10 and / or the second driver 40 are rotated from their shown in Fig. 1, unloaded home position counterclockwise by the handle in question is operated on the door, the tension springs 20, 50 tensioned and exert a restoring force the driver 10, 40 and thus on the drive shafts 12, 42 on their assigned handles. Each spring acts only on the associated each Mitnehmerscheibe.

In the embodiment shown in Figures 2a, 2b and 2c, in contrast to the embodiment of Fig. 1, only a single tension spring 60 as a spring or biasing means together for both the first and the second driver 10, 40 is provided. At its lower end, the tension spring 60 is in turn fixed by means of a holding device 62, for example a retaining bolt connected to the housing 5. At its upper end, the tension spring 60 acts on a branching device 64, which transmits the action of the tension spring 60 to the first driver 10 and / or the second driver 40. The branching device 64 preferably has a symmetrical shape, in particular substantially a T-shaped or double-T-shaped form. The first driver 10 and the second driver 40 have radially at their periphery a holding device 18, 48, with which they are connected via the branching device 64 with the spring 60. The holding devices of the drivers may for example be projections or lugs 18, 48, in which the two upper horizontal legs of the T-profile of the branching device 64 engage in the manner of a hook.

In all of the above-described embodiments, instead of the tension springs 20, 50, 60, torsion springs or other suitable spring devices may also be suitably used. It is also conceivable to combine tension springs in a suitable manner with torsion springs or other suitable spring devices.

At the second driver 40, a coupling lever 70 is pivotally articulated. For this purpose, the driver 40 at a portion of its circumference on a projection or flange 49, on which the clutch lever 70 is pivotally mounted by means of a bolt 74 which extends through a corresponding bore in the clutch lever 70 and in the flange 49. The clutch lever 70 is thus arranged axially adjacent to the second driver 40 such that it is located radially adjacent to the first driver 10 and extends over a portion of its circumference. The clutch lever 70 has a nose-like projection 72, with which he with appropriate alignment in an am Scope of the first driver 10 provided corresponding recess 19 can engage.

By the engagement of the coupling lever 70 in the recess 19, the two drivers 10, 40 rotatably coupled together. Upon actuation of one of the handles and corresponding rotation of the associated driver in this case, the other driver is taken and rotated its drive shaft. In this activated, coupling position of the clutch lever 70 thus the two drivers 10, 40 and their associated first and second drive shafts 12, 42 with the attached at the ends of first and second handles are rotationally connected to each other and can no longer be moved independently and against each other to be twisted. The drive shaft, which passes through the drive nut of the lock, thus can rotate the drive nut upon rotation of the respective other drive shaft and thus withdraw the latch of the lock, so that the lock is opened. In this activated position of the clutch lever 70 thus access through the secured door with the coupling device is possible.

The coupling device 1 further comprises activating means or drive members 80, 82, by means of which the coupling lever 70 is transferred from its inactive basic position shown in FIGS. 1 and 2a into the previously described activated position, in which it engages with its projection 72 with the recess 19 engages.

In the embodiments shown here, the activating means is an electric motor 80, on whose shaft an eccentric 82 is arranged, which is rotatable between two end positions, which are rotated for example by 90 ° or 180 ° to each other. In a first end position of the eccentric 82 holds the clutch lever 70 in the above-described activated position, while the eccentric 82 releases the clutch lever 70 in its second end position in the non-activated position in which the clutch lever 70 is not engaged with the respective other driver ,

The actuator 82 of the activating means 80 (for example, eccentric of the electric motor) preferably acts not directly and directly on the clutch lever 70, but rather initially on an intermediate management and / or transmission device 84, which is realized in the present embodiments as a leaf spring or baffle , The moving of the actuator leaf spring 84 then pushes the clutch lever 70 in its activated position. As explained above, the use of leadership and / or Transfer device 84 has the advantage that the coupling hook 70 is guided during its movement by a rotation of its associated driver 40 and can not get caught with the actuator 82.

When the actuator 82 is retracted and releases the clutch lever 70 to its non-activated position, the clutch lever 70 drops either by its own weight in a rotational movement about the pivot pin 74 down. Alternatively, the coupling hook 70 may be biased by a return spring 76, which is arranged for example around the pivot pin 74 around and pushes the coupling hook 70 down and possibly against the guide plate 84.

The leaf spring of the guide means 84 may be held and biased by means of a retaining bolt 86, which may serve as a spacer and / or screw for the walls of the housing 5 at the same time. In the same way, the retaining pin 62 for the lower end of a tension spring 60 and the two tension springs 20, 50 serve as spacers for the walls of the housing 5 of the coupling device 1. Additionally or alternatively, further spacers 8 may be provided for the housing walls, which at the same time also allow mutual screwing of the housing walls.

As can be seen from Fig. 2c, the branching device 64 is formed for the tension spring 60 in a symmetrical T-shape, in particular a double-T-shape, with the upper horizontal leg of the T-profile up to the inner walls of the housing 5 extend. As a result, the branching device 64 is guided during its movement on the housing inner walls. In the case of a double T-shape, the lower, horizontal legs of the double T-profile serve as a guide on the housing inner walls. This shape has the advantage that the branching device 64 is guided in its upward and downward movement just inside the housing and not tilted, so that a uniform spring force acts on the first and / or the second driver. As was explained above, in this case acts both in non-activated clutch lever in a rotational movement of the first or the second driver alone as well as activated clutch lever in a rotational movement of the rotationally positive coupled to each other two drivers always the same spring force. Both in the activated and in the non-activated state, therefore, the same force must always be used to actuate the handle of the door. This also results in a higher user-friendliness and improved comfort.

The function of the coupling device 1 will be described below with reference to the sequence of FIGS. 2a to 7.

Figures 2a to 2c show the device in a non-activated state in which neither of the two handles is actuated and they are in the normal position of the tension spring 60 in its rest position. The eccentric 82 is in that end position in which the clutch lever 70 is not in engagement with the driver 10.

Figures 3, 4 and 5 show the non-activated state of the coupling device, that is, a state in which the door is closed at least from the outside and can not be opened upon actuation of the external handle. In none of the states of Figures 3 to 5, the activating means 80 is actuated, that is, the eccentric 82 is in the end position in which the coupling hook 70 does not engage with the driver 10.

Fig. 3 shows a state in which the handle of the door outside is actuated and fully depressed, while the handle of the inside of the door is still in its unloaded home position. The outer driver 10 associated with the first driver 10 is rotated in this case counterclockwise, and its retaining lug 18 has pulled the branching device 64 upwards, whereby the tension spring 60 has been tightened. The tension spring now exerts a restoring force on this driver and thus on the associated with him handle. However, the operation of the external handle has no effect and it "turns empty"; the door remains closed.

In Fig. 4 is in a corresponding manner, the handle on the outside of the door in its normal position, while now the handle is actuated on the inside of the door. Thus, the associated second driver 40 is rotated counterclockwise, and its retaining lug 48 has raised the branching device 64 and thus tensioned the tension spring 60. The tension spring 60 thus exerts a restoring force on the handle on the inside of the door. With the rotation of the second driver 40 and the hinged coupling lever 70 has been moved about the rotational axis 44 of the drive shaft 42 of the second driver 40, wherein the clutch lever was not pivoted about its pivot axis 74 up to the first driver 10 back.

If the drive shaft 42 of the second driver 40 and the inner handle passes through the drive nut of the lock, in this case, when operating the inner handle also twisted the drive nut and thus pulled back the lock bolt. The door can thus be opened from its inside, but not from its outside (so-called anti-panic function).

In Fig. 5, the handle of the outside and the handle of the inside are operated independently and are in their depressed end position. For example, therefore, starting from the position in FIG. 3, the inner handle has additionally been actuated, or starting from FIG. 4, the outer handle has additionally been actuated. The drive shafts 12 and 42 of the two handles are still not coupled together, but against each other rotatable. The retaining lugs 18, 48 have raised the branching device 64 and tensioned the spring 60. The restoring force of the spring 60 thus acts on the two drivers 10, 40 with the same spring force on both the outer handle as on the inner handle. Only by operating the inner handle, on the drive shaft 42 is in this case the lock drive nut, the door can be opened from its inside. The operation of the external handle has no effect.

Figures 6a, 6b and 7 show in contrast to the previous figures now the activated state of the drive member 80 and the clutch lever 70, in which the door can be unlocked and opened from the outside. Starting from the basic position shown in Fig. 2a, the eccentric 82 of the electric motor 80 is rotated to its other end position and presses on the guide means 84, the clutch lever 70 with its projection 72 in the recess 19 of the first driver 10, wherein the clutch lever 70 about its pivot axis 74 is pivoted.

In the representation of FIG. 6a, both the outer handle and the inner handle are still in their unloaded basic position. Now, when the outside handle is operated, the state shown in Fig. 7 is reached. By associated with this operation rotation of the first driver 10 in the counterclockwise direction of the hooked in the recess 19 of the driver 10 clutch lever 70 and thus the second driver 40 is pulled along, on which the clutch lever 70 is articulated. By activating the clutch lever 70, the first and second drivers 10, 40 are coupled with each other in a torque-locking manner, that is, the two drivers can not be rotated in any direction of rotation. Thus, via the two drive shafts 12, 42 and the two door handles are coupled together rotationally fixed and not independently movable. Upon actuation of the outer handle is thus the inner side facing the second drive shaft and thus arranged on this drive shaft drive nut twisted so that the lock opens. This allows access to the secure area located behind the inside of the door.

If, starting from the activated state according to FIG. 6a, the inner handle is first actuated, the door is also opened, since thereby the drive nut is directly rotated. Due to the rotationally positive coupling of the two drivers and the two drive shafts, the outer handle also moves when the inner handle is actuated.

Suitable modifications of the invention in the form of further embodiments are conceivable. In particular, for the activating means 80 instead of the electric motor with eccentric the above-mentioned chemical actuators or piezoceramic actuators are used, which act on the clutch lever 70 and bring him in the same manner as previously described in its activated or non-activated position.

In a further alternative embodiment, the activating means 80 may be mounted directly on one of the two drivers 10, 40, in particular on that driver on which the clutch lever 70 is also mounted. The activation means 80 is arranged so that the actuator 82 acts directly on the clutch lever 70 without a guide or transmission device 84 is required.

LIST OF REFERENCE NUMBERS

1

Coupling device, locking device

5

casing

8th

Spacer, screw connection

10

first driver (outside)

12

first drive shaft

14

first axis of rotation

16

Holding device for spring means

18

Holding device / nose for branching device

19

recess

20

first spring / biasing means, tension spring, torsion spring

40

second driver (inside)

42

second drive shaft

44

second axis of rotation

46

Holding device for spring means

48

Holding device / nose for branching device

49

flange

50

second spring / biasing means, tension spring, torsion spring

60

Spring / biasing means, tension spring, torsion spring

62

Holding device for spring means, spring-retaining bolts

64

Branching device, (double) T-profile

70

clutch lever

72

head Start

74

Anlenkbolzen, pivot axis

76

Return spring

80

Activator / actuator, electric motor

82

Actuator, eccentric

84

Guidance / transmission device, leaf spring

86

Spring retaining bolt

Claims (16)

Coupling device (1) for a locking technique, which is arranged between a first handle and the locking technique, - With a substantially disc-shaped first driver (10) which is connected via a first drive shaft (12) non-positively connected to the first handle, wherein eccentrically on the first driver (10) acting spring means (20; 60) the first driver (10) pressurize with a spring restoring force and hold in an end position corresponding to the rest position of the first handle, - With a substantially disc-shaped second driver (40) via a second drive shaft (42) whose axis of rotation (44) is coaxial with the axis of rotation (14) of the first drive shaft (12) frictionally with a drive nut of the locking technique and with a second handle is connected, and - In a activated position of the coupling lever (70) has a projection (72) of the coupling lever (70) in a recess (19) on the respective other driver (10 ) engages in order, at least on actuation of one of the handles, to take along the driver (10, 40) assigned to the respective other handle, characterized in that - Act on the second driver (40) eccentric spring means (50; 60), which act on the second driver (40) with a spring restoring force and hold in an end position of the second handle corresponding end position, and that - In the activated position of the coupling lever (70), the two drivers (10, 40) and the first and second drive shafts (12, 42) associated therewith and first and second handles are coupled to each other in a rotationally force-locking manner. Coupling device according to claim 1, characterized in that on the first and the second driver (10, 40) respectively engaging spring means (20, 50) are arranged with parallel direction of action, and that the first and the second driver (10, 40) respectively a holding device (16, 46) on which the spring means (20, 50) engage. Coupling device according to claim 2, characterized in that the spring means (20, 50) of the first and the second driver (10, 40) each have the same spring force. A coupling device according to claim 1, characterized in that the spring means engaging the first and second dogs (10, 40) are formed by a single spring means (60), the spring means (60) engaging a branching means (64), and the first and the second driver (10, 40) each have a holding device (18, 48) on which the branching device (64) engages. Coupling device according to claim 4, characterized in that the branching device (64) has a symmetrical shape, in particular a substantially T-shaped form or a substantially double-T-shaped form. Coupling device according to claim 5, characterized in that the branching device (64) has a symmetrical T-shaped form on which the spring means (60) acts symmetrically such that when the clutch lever (70) is not activated during a rotational movement of the first driver (10). alone or the second driver (40) alone or with activated clutch lever (70) at a rotational movement of the rotationally force-fitting coupled to each other first and second drivers (10, 40) always acts the same spring force. Coupling device according to claim 5 or 6, characterized in that the branching device (64) has a shape which serves as a guide on inner walls of a housing (5) surrounding the coupling device (1). Coupling device according to one of the preceding claims, characterized in that inner walls of a housing (5) which surrounds the coupling device (1), as a stop for the drivers (10, 40) are formed. Coupling device according to one of the preceding claims, characterized in that on the first and the second driver (10, 40) acting spring means (20, 50, 60) are formed by a tension spring and / or a Torisonsfeder. Coupling device according to one of the preceding claims, characterized by activating means (80) for a transfer of the coupling lever (70) from the non-activated position to the activated position. Coupling device according to claim 10, characterized in that the activating means (80) are controlled by electrical, magnetic or electro-magnetic signals. Coupling device according to claim 11, characterized in that the activating means comprise an electric motor (80), on whose shaft an eccentric (82) is arranged, which is rotatable between two end positions, wherein the eccentric (82) in a first end position, the clutch lever (70 ) holds in the activated position, and wherein the eccentric (82) in a second end position releases the clutch lever (70) in the non-activated position. Coupling device according to claim 11, characterized in that the activating means comprise a chemical actuator (80) comprising a linearly displaceable actuator between two end positions, wherein the actuator holds the clutch lever (70) in the activated position in a first end position, and wherein the Actuator in a second end position releases the clutch lever (70) in the non-activated position. Coupling device according to claim 11, characterized in that the activating means comprise a piezoceramic actuator (80) comprising a linearly displaceable between two end positions actuator, wherein the actuator holds the clutch lever (70) in the activated position in a first end position, and wherein the Actuator in a second end position releases the clutch lever (70) in the non-activated position. Coupling device according to one of claims 10 to 14, characterized in that the activating means (80) via a guide and / or transmission means (84) act on the clutch lever (70), in particular via a leaf spring. Coupling device according to one of the preceding claims, characterized in that the locking technique is a lock, in particular a door lock.

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