EP2684179B1 - Anti-theft device for intercom systems - Google Patents

Description

The present invention relates to the term claimed above and thus relates to the security of modules having bell systems.

Bell systems are used on front doors, access barriers and the like; In this case synonymous, they are also referred to as intercoms or access control systems. Depending on the object on which the bell system is used, the user will demand the realization of different functions to meet his specific requirements. For example, it is required by users that in addition to a pure ringing function, which may also be reached separately and independently from each other by an access person seeking access, an intercom function is realized, a video image is recorded and transmitted or a preferably backlit house number is displayed ,

To meet these varying demands, it is known to provide frames of different sizes, in which different modules can be used to realize the desired functions. Mentioned here are, inter alia, camera modules, intercom modules, Einzelklingelmodule, Symbolanzeigemodule, Multiklingelmodule, numeric keypad modules, security access modules and modules that combine several of the mentioned functions.

In the present case, systems in the form of bell systems are already understood in particular if they have no actual bell buttons but realize at least one of the functions mentioned.

While this use of deployable modules significantly reduces manufacturing and storage costs, problems can arise if the Bell system is mounted on an object in a theft or vandalism prone area or tampering can not be excluded. In such a case, there is a risk that the modules are taken out of the frame and put back inoperative or stolen.

In principle, it would be possible to permanently and inextricably connect the modules to the frame after insertion, for example by snapping them in to prevent theft and sabotage. However, such a permanent connection in turn involves problems when the modules need to be replaced, for example because of a defect or because the functional requirements of the user have changed.

Therefore, it has already been proposed to provide a locking mechanism which fixes the individual modules with movable locking lugs on the frame. The movement of the locking lugs then releases the modules again and is effected in commercial frame by excitation of a monostable electromagnetic actuator in the stable position, the modules are locked.

This facilitates the later replacement of modules, but proves to be cumbersome, especially during the initial installation, because the modules, especially at the time of installation, are repeatedly taken out of the frame and used again to control the connection, to coordinate the module arrangements in the frame, etc. Need to become.

From the WO 2006/11461 a bell module is known, which is formed of two interconnected plastic parts, which are interconnected by provided at their edges closure members and locked with a locking means.

It would be desirable to be able to specify a bell system, which ensures high security at low cost despite ease of installation.

The object of the present invention is to provide new products for commercial use.

The solution to this problem is claimed in an independent form. Preferred embodiments can be found in the subclaims.

It is thus proposed in accordance with one aspect of the present invention to form a module frame for bell system modules with module locking means for locking modules to be inserted on the frame and lock release means for locking release during actuator energization, such that the lock release means further has selectively activatable mechanical and actuator independent permanent latching.

It must therefore not be so excited for each required during assembly or in a test removal of a module of the actuator, which is annoying especially in the absence of power supply, but it can by a simple mechanical inhibition initially uninfluenced by a lock Assembly are permitted and only after their completion, the mechanical latch escapement be repealed. This procedure facilitates the assembly considerably.

It is preferred if the module frame is configured such that the locking release means comprises a linearly movable element which interlocks with the module locking means depending on the displacement position, the locking means in particular comprising pivotable elements and the pivotal position determinable in response to the assumed linear position is.

Thus, the invention requires little modification to the frame as compared to prior art arrangements, which in turn results in the module frame of the present invention being usable with a variety of existing conventional modules.

It is further preferred if the Verriegelungsaufhebemittel comprises a rotatable member which urges the linearly movable element for Dauerriegelhemmung in a first linear position in at least one rotational position and which allows at least a second rotational position, a movement of the linearly movable member in a locking position, in particular such in that the excitable actuator can move the linearly movable element out of this locking position.

If a rotary element is provided in order to mechanically achieve a continuous locking mechanism, this is preferably operable from the top side.

It is preferred if the module locking means for at least one module are concealed in the frame; This can be done for example by receiving the associated elements in cavities formed in use between the frame and wall. The frames are typically already for optical reasons and for reasons of stability have a certain size, in particular width of the edges and at the same time for cost and manufacturing reasons not be formed solid. Therefore, it is readily possible to arrange the locking means here. It then only needs to be operated if necessary, the mechanically actuated element for the Dauerriegelhemmung from the top of the frame forth; However, the required space for this is small, so that this mechanically operated element in turn can be hidden in use by a usable after release of the blocking effect module.

It is possible and preferable for the lock release means to be effective for all modules to be arranged in the frame. This is especially readily possible if the locking release means are arranged in a frame web between two modules and the modules are locked from the edge of the frame. The latch release means may then generate movement of a linearly positionable member toward and away from the frame edge; with a force transmission strip, which runs along the edge of the frame and thus along the arranged on the frame edge locks of the individual modules, then the lock can be inhibited by the movement of the linearly positionable element.

The module frame is preferably formed for wall-side mounting and provided to the wall with mounting holes and through holes for connecting cables and the like.

Protection is also claimed for a bell system with a module frame according to the invention, in particular if this bell system comprises at least one of the modules selected from the group camera module, intercom module, single-ring module, symbol display module, multi-burst module, numeric block module and security access module.

Protection is further claimed for such a method of assembling a bell system, wherein it is provided that the module frame is mounted, mounted in a mechanically permanent locked state module modules and tested as necessary and only then the Dauerriegelenthemmung is repealed.

Fig. 1

eine Draufsicht auf ein in einem Modulrahmen-Zwischensteg angeordnetes Verriegelungsaufhebungsmittel während der erfindungsgemäßen dauernden mechanischen Hemmung des Riegels;

Fig. 2

das in einem Modulrahmen-Zwischensteg angeordnete Verriegelungsaufhebungsmittel von Fig. 1 in einem Zustand, in welchem keine Riegelhemmung bewirkt wird;

Fig. 3

das in einem Modulrahmen-Zwischensteg angeordnete Verriegelungsaufhebungsmittel von Fig. 1 in einem Zustand, in welchem durch Aktorerregung eine Riegelhemmung bewirkt wird, also die Entnahme der Module ungehemmt erfolgen kann;

Fig. 4

ein zum leichteren Verständnis herangezogenes Schema einer Modulverriegelung in Schnittansicht durch einen Rahmen auf Höhe eines Rahmenstegs mit Aufsicht auf eine schwenkbare Verriegelung, eingesetztem Modul und dem Endteil der Verriegelungsaufhebung;

Fig. 5

eine Schnittansicht durch ein Ausführungsbeispiel einer tatsächlich gefertigten Variante;

Fig .6

eine weitere Schnittansicht durch die Variante von Fig. 5.

The invention will be described only by way of example with reference to the drawing. In this is represented by:

Fig. 1

a plan view of a disposed in a module frame gutter locking release means during the inventive permanent mechanical locking of the bolt;

Fig. 2

the lock release means of FIG. 14 arranged in a module frame gutter Fig. 1 in a state in which no latch inhibition is effected;

Fig. 3

the lock release means of FIG. 14 arranged in a module frame gutter Fig. 1 in a state in which a latch inhibition is caused by Aktorerregung, so the removal of the modules can take place uninhibited;

Fig. 4

a diagram of a module lock in sectional view by a frame at the level of a frame web with a view of a pivotable lock, inserted module and the end portion of the lock release;

Fig. 5

a sectional view through an embodiment of an actually manufactured variant;

Fig. 6

another sectional view through the variant of Fig. 5 ,

In Fig. 4 is a section through a module frame 1 a bell system shown.

The module frame 1 comprises a wall-side bottom 2, which is broken as usual at the locations required for mounting (not shown) and for receiving a plurality of modules is arranged side by side. Between the modules, a respective web 4 is left.

The module frame 1 has an edge which is overhanged by the modules, cf. Overhanging area 5.

Between Überkragungsbereich 5 and bottom now a bolt 9 is arranged. This is - for ease of understanding here shown as pivoting on an arm 8 projecting from the frame edge 6 about an axis 8. It should be noted that a practical embodiment can be carried out differently, as described below with reference to FIGS. 5 and 6 It will be shown, however, that the construction described here can facilitate the understanding of the locking according to the invention.

The bolt 9 has a locking lug 12 with the top of the frame towards a beveled surface 10, on which a module lower edge 11 can slide, which moves the locking lug in the direction of the module edge 6, in the explanatory example shown here, by the latch pivots about the axis 8. As soon as the module edge 11 has moved past the bolt 9, the return movement of the module, that is to say the removal of the module from the frame, is prevented as long as the locking lug 12 is not pivoted to the module frame edge 6.

In order to hold the locking lug 12 now in this locking position, the locking lug 12 is pressed against the module. For this purpose, a linearly displaceable element 20 is provided in the illustrative example below the axis 8, which is pressed against the frame edge.

Between the lower arm of the bolt 9 and the displaceable element 20 while a spring 13 is provided which holds the latch 9 without external force in the locking position, but upon application of forces on the tapered surface 10 upon insertion of a module, a return movement of the locking lug 12th so far allowed that the module 3 despite barrier by the linearly displaceable element 20 is still usable. Between bolt 9 and frame edge 6 a compression spring 14 is further provided, which presses the lower latch arm 20 without counteracting forces of the linearly displaceable element 20 away from the frame edge, which moves the locking lug 12 away from the module edge, so that the collar-shaped module edge is no longer overlapped and the module is free to duck. By the movement of the linearly displaceable element 20 can thus be determined whether only a module insertion, but no module removal should be possible or whether a module removal is possible.

It is further shown a along the frame edge 6 extending force transmission strip 15, with the corresponding linear position of the displaceable element 20 all provided along the frame edge 6 module latch can be influenced in the same way.

Also shown is a partition wall 21 through which the linearly displaceable element passes and which is part of the frame web.

The described arrangement is still conventional insofar as the structural design of the corresponding elements of both conventional arrangements as well as the invention of the above, can be different to the functional explanation.

From the above, however, it can be seen that a lock can be allowed or prevented by a linearly movable element. It will now be described a further embodiment of a bolt, in which this as is the case. For this reference is made to the FIGS. 5 and 6 ,

In the FIGS. 5 and 6 are largely the same reference numerals used to refer to the same or similar elements. To clarify that reference will be made to another embodiment in the following text, however, a Roman II will be added to the reference only for the second variant.

In the FIGS. 5 and 6 again a section through a module frame 1II a bell system is shown.

The module frame 1II in turn comprises a wall-side bottom 2II which, as usual, is perforated at the points required for mounting (not shown) and for receiving several modules is arranged side by side. Also, between the modules, a respective web 411 is left.

The module frame 1II has an edge which is overhanged by the modules, cf. Overhanging area 5II.

In Überkragungsbereich 511 turn a bolt 911 is provided. This latch 911 has a locking lug 1211 with a beveled surface 10II towards the top of the frame, on which a module lower edge 11II can slide, which moves the locking lug 12II in the direction of the module edge 611. As soon as the module edge 11II has moved past the latch 911, the return movement of the module, that is to say the removal of the module from the frame, is prevented as long as the latching lug 1211 has not moved up to the module frame edge 611.

To now hold the latch 911 in this locking position, it is pressed against the module with a spring 14II.

Between the lower arm of the locking lug 911 and the displaceable element 2011 while a spring 1411 is provided which holds the locking lug 12II without external force in the locking position, but upon application of forces on the tapered surface 10II upon insertion of a module, a return movement of the locking lug 12II as far as allowed, the module 3II despite lock by the linearly displaceable element 1311 is still usable.

Between locking lug 12II and frame edge 6II, the linearly displaceable element 13II is provided, which moves the locking lug 12II away from the edge of the module so that the collar-shaped module edge is no longer overstretched and the module can be freely dehumidified.

By the movement of the linearly displaceable element 2011 can thus be determined whether only a module insertion, but no module removal should be possible or whether a module removal is possible.

It is further shown a along the frame edge 6II extending force transmission strip 1511, with all provided along the frame edge 611 module latch can be influenced in the same way.

Also shown is a partition wall 2111 through which the linearly displaceable element passes and which is part of the frame web.

While the above possibilities of locking and possibilities of their inhibition by linearly movable elements have been described, will now be given how can inventively configure a locking inhibition. This will now be with reference to the Fig. 1 to 3 a locking inhibition according to the invention described.

The linearly displaceable elements passing through the wall 21 are continued over an elongate region 22 as far as an electromagnetically excitable actuator 23.

The electromagnetically excitable actuator 23 is energized via a power supply line (not shown) with a power source provided externally of the frame. The power source may either be provided remotely from the frame, for example in a house where the bell system is used, or, e.g. in a module, e.g. realized with an emergency battery. When arranging the power source in a module, e.g. a keypad, a key combination can be determined, if necessary, on the input of which the power source is activated. The power source is designed so that the actuator is energized only a certain time and then the excitation ends.

The actuator 23 is monostable, wherein it attracts the linearly displaceable element in the excited state, cf. Fig. 3 , Arrow 25, while without linear excitation the linearly displaceable element is extended, cf. Fig. 2 , Arrow 25a. As can be seen, arrow 25 is shorter than arrow 25a according to the different width of the extension.

In order to achieve the desired position of the linearly displaceable element 20, which is desired in the actuator-energized state, a compression spring 26 is provided which, on the one hand, rests on an intermediate wall 27 provided between the actuator 23 and the wall 21 and, on the other hand, is supported on the displaceable element 20 , here at a widening 28, which is provided on the elongated portion 22 of the element 20.

This elongated portion 22 is spaced from the wall 21 and spaced apart so far that a rotatable member 30 laterally adjacent thereto, but at the height of the space fits. As will be seen below, this rotatable element 30 realizes a mechanical locking mechanism for the lock in the following manner. It is thus an actuator-independent locking release means which causes a Dauerriegelhemmung.

The rotatable element is not rotationally symmetrical, but has a recess 32. This recess is shown here approximately at right angles, wherein the transitions to the remaining circular contour are rounded, cf. Reference number 34.

The rotatable member is rotatable about an axis 31 which is perpendicular to the frame bottom. The rotatable element extends (not shown) while in the area of the upper edge of the web, which is covered in operation by overhanging modules. There, a contouring such as a Phillips is provided to rotate the rotatable element between 2 positions in FIGS. 1 and 2 are distinguishable.

In one of the rotational positions, cf. Fig. 2 , the recess 32 of the rotary member 30 is positioned so that the broadening 28 lies in it. This allows the linearly displaceable element 20 to assume an extended position so that the locking is effective.

In the other rotational position, cf. Fig. 1 , the displaceable element 20 is forced by the rotary member 30 by its engagement with the widening 28 against the force of the compression spring 26 away from the wall 21 and thus the lock is not effective.

• Zunächst wird der Rahmen in herkömmlicher Weise an der Wand befestigt. Dann wird sichergestellt, dass sich das Riegelsperrelement in seiner Einrastverhinderungsposition befindet, also der Riegelmechanismus außer Kraft gesetzt ist.

The arrangement is used as follows:

• First, the frame is attached to the wall in a conventional manner. Then it is ensured that the bolt locking element is in its Einrastverhinderungsposition, so the locking mechanism is disabled.

The modules provided for the frame are inserted into the frame positions provided for them and it is ensured that they function properly. As long as this is not the case, or if the user decides at short notice after assembly to change the positions of the modules, the modules used in the frame can be easily removed.

Once the functional test is completed as part of the assembly, that module is removed, which is located in front of the bolt inhibition. By rotation of the now achievable from the frame top side bolt escapement, the lock is moved under the action of the compression spring in its locking rest position.

The still in the frame modules are thereby already locked, without the reinsertion of the remote module for activating the lock is impaired.

The module, which is initially removed to activate the locking mechanism, is then inserted back into the frame, whereupon the locking device snaps into place. This locks all modules.

The arrangement can now be used protected against theft and sabotage. By locking a removal of the modules is prevented without tools and even with tools theft is possible only by destroying the arrangement; the traces left behind on the frame at the same time offer effective protection against sabotage attempts.

If, after some time, a module is to be exchanged, for example in order to satisfy the desire for changed functions, the electromagnetic actuator is energized, which pulls the locking bar into the latch-releasing position.

This can be done from inside the object, e.g. by transmitting suitable control signals or by pressing certain keys or key sequences on one of the modules, which energizes the electromagnetic actuator limited by the logic circuit provided therein.

By the circuit used to energize the actuator is thereby ensured that this excitation of the electromagnetic actuator is only temporary in time, so automatically without additional actuation after the expiry of the energizing time again a security against theft is guaranteed. A only accidental unlocking thus usually remains without consequences.

During the time of excitation of the electromagnetic actuator, however, the modules can be removed without locking. If the module is removed before the locking mechanism, the bolt lock can be put back into the locking position at the same time on the frame. This allows a re-test of the modules then to be installed, and once the tests have been completed, the fuse can again be activated and the module concealing it can be put back in place.

It is therefore possible to operate the arrangement reversibly secured or unsecured.

Claims (10)

1. A module frame for bell system modules having a
   module locking means for locking modules, which are to be inserted, to the frame and
   a locking canceling means for canceling locking during actuator excitation, characterized in that
   the locking canceling means further exhibits an actuator-independent and selectively adjustable permanent catch blocking.
2. The module frame according to the preceding claim, characterized in that the locking canceling means comprises a linearly moving element which engages, so as to cancel locking, with the module locking means depending on the displacement position, wherein the locking means, in particular, comprises pivotable elements and the pivot position is determinable in response to the assumed linear position.
3. The module frame according to any one of the preceding claims, characterized in that the locking canceling means comprises a rotatable element which, in at least one rotation position, pushes the linearly moving element into a first linear position for permanent catch blocking and which, in at least a second rotation position, allows movement of the linearly moving element into a locking position, in particular in such a way that the excitable actuator can move the linearly moving element out of this locking position.
4. The module frame according to the preceding claim, characterized in that the rotatable element can be operated from the top.
5. The module frame according to any one of the preceding claims, characterized in that at least one module locking means for at least one module is arranged in the frame in a concealed manner.
6. The module frame according to the preceding claim, characterized in that the locking canceling means acts on all modules which are to be arranged in the frame.
7. The module frame according to any one of the preceding claims, characterized in that it is designed to be mounted on a wall.
8. A bell system having a module frame according to any one of the preceding claims.
9. The bell system according to the preceding claim, characterized in that at least one of the modules is selected from the group comprising a camera module, a talk-back module, a single bell module, a symbol display module, a multiple bell module, a number block module and a security access module.
10. A method for assembling a bell system according to the preceding claim, characterized in that the module frame is mounted, modules are mounted in a mechanically permanently catch-unblocked state and tested as required, and only then the permanent catch unblocking is canceled.

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