Abstract:
Shutter (or door) fitting for fastening a furniture shutter (or door) in a pivotable manner on a basic cabinet structure, having at least one actuating arm, which is provided for moving the furniture shutter, and having at least one shutter-mounted fitting part, which can be connected to the actuating arm, characterized in that the shutter-mounted fitting part has a rotation-prevention means for temporarily fixing the pivoting position of the at least one actuating arm, preferably in the fully open position thereof, wherein the rotation-prevention means, in a first operating position, arrests the at least one actuating arm in its pivoting position relative to the shutter-mounted fitting part and, in a second operating position, allows the actuating arm to pivot.

Description:
This application is a continuation of International Application No. PCT/AT2006/000415, filed Oct. 10, 2006. 
    
    
     FIELD OF THE INVENTION 
     The present invention relates to a fitting for a flap for a swivellable attachment of a furniture flap to a cabinet body, with at least one actuating arm provided for moving the furniture flap, and with at least one flap-side fitting part which can be connected to the actuating arm. 
     DESCRIPTION OF THE RELATED ART 
     Such fittings for flaps are used, for example, in upper cabinets, such that the furniture flap can be opened upwards in relation to the furniture body. The actuating arm is attached with one end region to the furniture body or to a body-side fitting part, while the other end region of the actuating arm is attached to the flap-side fitting part. The furniture flap is attached to the furniture body by means of hinges on one side and connected on the other to the actuating arm which is provided to move the furniture flap from a closed position into an opening position. The fitting of the furniture flap in relation to the actuating arm is made difficult by the swivelling actuating arm, as this is unstable and can slide off into the furniture body when the flap is being attached. 
     It is therefore an object of the present invention to propose a fitting for a flap of the genre mentioned at the outset which allows a convenient fitting of the furniture flap. 
     SUMMARY OF THE INVENTION 
     The above objective is achieved according to the invention in an advantageous embodiment in which the flap-side fitting part comprises an anti-twist device for the temporary fixing of the swivel position of at least one actuating arm, preferably in a completely open position, wherein in a first operating position the anti-twist device locks the at least one actuating arm in its swivel position relative to the flap-side fitting part and in a second operating position allows a swivel movement of the actuating arm. 
     A first feature of the invention addresses the issue of facilitating the fitting of the furniture flap relative to the flap-side fitting part. To this end the relative position of the flap-side fitting part is locked in relation to the actuating arm by the proposed anti-twist device. 
     However, a further feature of the invention addresses the issue of, not only fixing the position of the flap-side fitting part relative to the actuating arm, but simultaneously locking the position of the actuating arm in relation to the cabinet body. The “empty” actuating arm, where the flap has not been yet attached, is preferably fixed in a completely open position in respect to its swivel position such that during fitting of the furniture flap this cannot slide off or spring up again due to a customary spring device (acting on the actuating arm, sometimes with very strong forces, to balance the weight of the flap) and in the process injure the installer. 
     According to a first variant of the invention it can be provided that on every side wall of the cabinet body at least two actuating arms, each having two pivot axes, are provided to move the furniture flap, wherein at least one pivot axis of said actuating arms can be locked by the anti-twist device. It may be expedient if the at least two actuating arms form a four-bar mechanism with the flap-side fitting part. If one pivot axis of such a four-bar mechanism is being locked, the remaining pivot axes of the four-bar mechanism are also fixed in position, with the result that the entire lever mechanism for moving the furniture flap for the fitting process is immobile. 
     According to an alternative variant of the invention, it can also be provided that on every side wall of the cabinet body only one actuating arm with two pivot axes is provided to move the furniture flap, wherein at least one additional cord, preferably a toothed belt, is guided between a guiding part housed rotation-resistant against the cabinet body and a further guiding part rotatably housed at the free end of the actuating arm and can be connected rotation-resistant to the flap-side fitting part, wherein the further guiding part can be locked relative to the adjusting arm by the anti-twist device. In other words, if only one actuating arm is provided to move the flap, an additional cord or a toothed belt brings about a forced guidance between the guiding part attached rotation-resistant to the cabinet body and the guiding part rotatably housed to the free end of the actuating arm. It is advantageous for the fitting of the flap if the anti-twist device has, attached to the actuating arm, a slider which can be brought into engagement with the further guiding part of the flap-side fitting part. 
     Once the flap has been fitted, the anti-twist device is deactivated, with the result that the customary movement path of the flap is not impeded. 
     According to an embodiment of the invention, it can be provided that the actuating arm has a pivot axis with a recess into which a locking part can be introduced. The design can be such that the recess runs radially to the pivot axis of the actuating arm. Alternatively, it may also be expedient if the recess runs across the pivot axis of the actuating arm. 
     In an advantageous embodiment of the invention it can be provided that the locking part is formed from a slider. However, it is also within the scope of the invention that the locking part is formed from a rotatable part. 
     According to a preferred embodiment of the invention, it can be provided that the flap-side fitting part has a base pre-fitted on the flap and an attachment part connected to the actuating arm. The design can be such that the attachment part can be connected to the base by a releasable attachment device, preferably a mechanical latching connection. In this connection, it can be expedient if the mechanical latching connection is formed such that the attachment part can be suspended into the base and then locked by being swivelled. 
     In this way, a convenient attachment of the flap in relation to the actuating arm is achieved; the actuating arm is fixed in a open position and the furniture flap with its pre-fitted base can be easily clipped onto the attachment part of the actuating arm. 
     According to the preferred embodiment of the invention, it can be provided that the attachment part is secured to the base, as well as to the releasable attachment device by a separate anti-lifting device. When using a mechanical latching connection, in particular with a spring-loaded clip lever, the possibility exists that the clip lever is unintentionally actuated, which would cause the flap to come loose or fall from the flap fitting. By providing an additional anti-lifting device the flap is doubly secured against falling and is thus held permanently to the flap fitting. 
     According to the preferred embodiment, it can be provided that the anti-lifting device comprises a spring-loaded slider which, in an operating position, can be brought into engagement with a safety catch attached to or formed on the base, or on the attachment part. In this connection, a structurally simple design can be achieved such that the anti-twist device is formed from the same slider as the anti-lifting device. 
     A further embodiment provides that the position of the actuating arm in relation to the flap-side fitting part can be adjusted by at least one setting device. Manufacturing tolerances and minor installation errors may lead to the formation of an unattractive seam, as the furniture flap is not optimally aligned in relation to the furniture body or to the furniture flaps of adjacent cabinets. In this way, unlike an embodiment known according to the state of the art, in which the actuating arm is merely hinged to the flap, an active influencing of the relative position between actuating arm (or a bearing part of same) and the flap-side fitting part is made possible. The setting device makes it possible for the installer to perform an individual and easy adjustment of the flap fitting in thereby achieving a visually attractive gap alignment. 
     According to the preferred embodiment it can be provided that the height of the actuating arm or its bearing part and/or its inclination and/or the lateral alignment in relation to the flap-side fitting part can be adjusted by the at least one setting device. Thus, an independent three-dimensional adjustment option for the actuating arm or its bearing part in relation to the flap-side fitting part or to the flap is made possible which permits an optimal adjustment of the already assembled flap. In this connection, the design can be such that in each case a separate setting device is provided to adjust the height, the inclination and the lateral alignment. 
     A three-dimensional setting of the bearing-point position of the at least one actuating arm relative to the flap-side base (preferably firmly screwed fast to the flap) is possible through the separate setting devices. The setting of the height H brings about a change in the previously-named bearing-point position in longitudinal extension of the furniture flap, while the setting of the lateral alignment B brings about a change in the bearing-point position along the width of the furniture flap. The height H and the lateral alignment B are thus preferably adjusted in two-dimensional XY-direction parallel to the flap plane, while the additional adjustment of the inclination a brings about an inclination adjustment of the actuating arm or its bearing part relative to the flap-side fitting part, which results in a change in the inclination of the flap plane relative to the end-surface plane of the cabinet body. 
     In a further advantageous embodiment, it can be provided that two actuating arms are directly or indirectly rotatably housed on the attachment part. An actuating arm and a control arm can preferably be used here, wherein the actuating arm is usually loaded body-side by a spring device to compensate for the weight of the flap. The control arm, on the other hand, determines the course of movement, i.e., the position of the flap in relation to the furniture body during its opening and closing movement. 
     A structurally simple design of the invention provides that the at least one setting device has at least one threaded screw which can be actuated manually or by a setting element, preferably a screwdriver. In this connection, it is, of course, also possible to provide, instead of the threaded screw, eccentrics or discs which are attached eccentrically on a shaft. Also, the design can be such that the setting device(s) has (have) at least one, preferably automatic, worm gear. 
     Further details and advantages of the present invention are described below in further detail using the description of the Figures, with reference to the drawings. There are shown in: 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIGS. 1   a ,  1   b  a side view of a cupboard-shaped piece of furniture with an upwards-opening flap and a detailed representation of the flap fitting, 
         FIGS. 2   a - 2   c  the flap-side flap fitting in an exploded representation, assembled and in a perspective view from the rear, 
         FIGS. 3   a ,  3   b  a perspective representation of the flap fitting with twist-resistant pivot axis and a vertical section of the same, 
         FIGS. 4   a ,  4   b  a perspective representation of the flap fitting with active anti-lifting device and a vertical section of the same, 
         FIGS. 5   a - 5   c  different views of the completely locked flap fitting, 
         FIGS. 6   a - 6   d  the flap fitting in different views when carrying out a height adjustment, 
         FIGS. 7   a - 7   d  the flap fitting in different views when carrying out an inclination adjustment, 
         FIGS. 8   a - 8   c  the flap fitting in different views when carrying out a lateral adjustment, 
         FIGS. 9   a ,  9   b  an alternative embodiment of the anti-twist device with a rotatable part for locking the pivot axis of the actuating arm, 
         FIGS. 10   a ,  10   b  the anti-twist device from  FIGS. 9   a ,  9   b , wherein the pivot axis of the actuating arm is locked, 
         FIGS. 11   a ,  11   b  the anti-twist device from  FIGS. 9   a ,  9   b , wherein the pivot axis of the actuating arm can be moved freely, 
         FIGS. 12   a ,  12   b  the flap-side fitting with the rotatable part of the anti-twist device, which allows the access of a screwdriver in one position and prevents the access of the screwdriver in a second position, 
         FIGS. 13   a ,  13   b  side views of an actuating mechanism mounted on the furniture body with an actuating arm, secured against swivelling or swivellable, and 
         FIGS. 14   a ,  14   b  a further variant of the invention with only one actuating arm to move the flap, with the anti-twist device in the passive and active position respectively. 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
       FIG. 1   a  shows a side view of a cupboard-shaped piece of furniture  1  with an upwards-opening flap  3 .  FIG. 1   b  shows the detail A from  FIG. 1   a . The cupboard-shaped piece of furniture  1  comprises in conventional manner a cabinet body  2 , a cabinet top  2   a , a rear wall  2   b , a cabinet bottom  2   c  and two side walls  2   d , on each of which an actuating mechanism  4  to move the flap  3  is mounted. The actuating mechanism  4  comprises a spring or drive device, to which no further reference will be made. The actuating mechanism  4  has two actuating arms  5   a  and  5   b , which are provided to move the flap  3  between a closed position and an open position. The actuating arms  5   a ,  5   b  have pivot axes  8   a ,  8   b , wherein at least one pivot axis  8   a ,  8   b  can be locked by an anti-twist device to be described in more detail. The actuating arms  5   a ,  5   b  form a four-bar mechanism with the pivot axes  8   a ,  8   b.    
       FIG. 1   b  shows the detail A from  FIG. 1   a . On the back of the flap  3  a flap-side fitting part  6  is provided which is connected directly or indirectly via a releasable attachment device  10   b  to the bearing part  7  of the two actuating arms  5   a  and  5   b . The two actuating arms  5   a  and  5   b  are housed on the bearing part  7  via pivot axes  8   a ,  8   b , wherein the anti-twist device according to the invention, which is to be described in more detail, acts preferably on the pivot axis  8   b.    
       FIG. 2   a  shows an exploded representation of an exemplary flap fitting. The flap-side fitting part  6  is formed in two parts and comprises a base  6   a  pre-fitted on the flap  3  and an attachment part  6   b , connected to the actuating arms  5   a  and  5   b , which can be locked to each other preferably via a spring-loaded mechanical latching connection  10   a ,  10   b . The base  6   a  is pre-fitted on the inside of the flap  3 , during fitting the attachment part  6   b  is firstly suspended with its recess  9   b  in the pins  9   a  and locked in the catch recess  10   a  by swivelling up with the help of the locking lever  10   b . The attachment part  6   b  is formed somewhat narrower than the U-shaped base  6   a , with the result that the attachment part  6   b  can be moved within the arms of the U-shaped base  6   a  with the help of the side adjustment screw  11 . The pin  14   b  is housed stationary on the attachment part  6   b , wherein an actuation of the height adjustment screw  13  changes the height of the bearing part  7  in relation to the attachment part  6   b . The bearing pin  8   c , which is provided for housing the actuating arm  5   b  shown in  FIG. 2   c , is located on the pivot axis  8   b . The inclination adjustment screw  12  passes through the bearing part  7  and rests, when mounted, against the fitting part  6   b , in order to bring about an inclination of the bearing part  7  in relation to the attachment part  6   b . The slider  15 , the function of which is described in more detail in the following Figures, comprises the locking part  15   a  (which is part of the anti-twist device for the actuating arm  5   b ) and the anti-lifting device  15   b , which can be brought into engagement with the safety catch  16  of the base  6   a . The slider  15  is spring-loaded by the leaf spring  15   c , whereby the slider  15  is prevented from sliding off unintentionally. 
       FIG. 2   b  shows the flap fitting assembled. The parts  6   a ,  6   b  and  7  are connected to each other and form a unit which is connected on one side to the flap  3  (not shown) and on the other side to the actuating arms  5   a  and  5   b  ( FIG. 2   c ). The unit, comprising the bearing part  7  and the attachment part  6   b , can be released by the base  6   a  via the stop lever  10   b . The bearing part  7  can be adjusted in height direction H relative to the attachment part  6   b  (and thus to the base) by the height adjustment screw  13 , shown in  FIG. 2   a , which is accessible on the underside of the bearing part  7 . The attachment part  6   b  can be adjusted its in lateral alignment B within the base  6   a , U-shaped in cross-section, by the side adjustment screw  11 . Finally, the bearing part  7  can be inclined by the angle α from the 0° position shown in  FIG. 2   b  relative to the unit, comprising the base  6   a  and the attachment part  6   b , by the inclination adjustment screw  12 . 
       FIG. 2   c  shows the flap fitting with mounted actuating arms  5   a  and  5   b  from a rear perspective representation. 
       FIG. 3   a  shows a perspective front view of the flap fitting with mounted actuating arms  5   a  and  5   b  which are rotatably housed on the bearing part  7  via the pivot axes  8   a  and  8   b . The flap-side fitting part  6  comprises the pre-fitted base  6   a  and the attachment part  6   b  which can be releasably connected to each other via a mechanical latching connection  10   a ,  10   b .  FIG. 3   a  and  FIG. 3   b  show the start of the fitting process, wherein as a first step the attachment part  6   b  is suspended into the pin  9   a  of the base  6   a . Reference is made below to the vertical section of the flap fitting according to  FIG. 3   b  in which the operation of the anti-twist device is explained in more detail. The actuating arms  5   a ,  5   b  each have two pivot axes  8   a ,  8   b , with the result that these form a four-bar mechanism with the flap-side fitting part  6  through their body-side articulation. The actuating arm  5   b  bears against the pivot axis  8   b , which according to  FIG. 3   b  engages with the locking part  15   a  attached to the slider  15 , whereby the pivot axis  8   b  of the actuating arm  5   b  is locked in its swivel position relative to the flap-side fitting part  6   a ,  6   b . Because its pivot axis  8   b  is locked, the actuating arm  5   b  cannot be swivelled in relation to the furniture body  2  nor in relation to the flap-side fitting part  6   a ,  6   b , whereby a simple and rapid fitting of the flap  3  is made possible. The leaf spring  15   c  rests against the attachment part  6   b  and prevents an unintended releasing of the slider  15 . The anti-lifting device  15   b , which can be brought into engagement with the safety catch  16  attached to the base  6   a , but which is inactive in the Figure shown, can also be seen. The inclination adjustment screw  12  rests with its end against the attachment part  6   b  and upon twisting of the same brings about an inclination adjustment of the bearing part  7  in relation to the attachment part  6   b . The bearing part  7  can be adjusted according to the length of the oblong hole  14   a  by the height adjustment screw  13 , in the concave or tapered section of which the pin  14   b  is housed, whereby the height of the bearing part  7  can be adjusted in relation to the attachment part  6   b.    
       FIG. 4   a  further shows the perspective front view of the flap fitting from  FIG. 3   a , with the difference that the unit comprising the bearing part  7  and the attachment part  6   b , has been swivelled closer to the base  6   a  and the slider  15  has been pushed into its second operating position. The vertical section according to  FIG. 4   b  shows that the locking part  15   a  has been disengaged from the pivot axis  9   a  by the displacement of the slider  15 , with the result that all pivot axes  8   a ,  8   b  and, thus the actuating arms  5   a ,  5   b , can now move freely. The recess  20 , which runs radially to the pivot axis  8   b  and into which the locking part  15   a  of the slider  15  can be introduced, can also be seen (the recess  20  being located in the bearing pin  8   c  which is located on the pivot axis  8   b  as previously described herein and shown in  FIGS. 2   a ,  2   b ,  3   a , and  3   b ). The slider  15  also fulfils a double function, as the anti-lifting device  15   b  now also engages with the safety catch  16 . If the latching connection  10   a ,  10   b  is unintentionally released, the unit, comprising the bearing part  7  and the attachment part  6   b , can be only partially released from the pre-fitted base  6   a  and is therefore secured permanently against a fall of the flap  3 . 
       FIG. 5   a  shows the completely locked position of the bearing part  7 /attachment part  6   b  unit with the base  6   a  pre-fitted on the flap  3 .  FIG. 5   b  shows a top view of the flap fitting with its actuating arms  5   a  and  5   b , while  FIG. 5   c  shows the vertical section along the line C-C from  FIG. 5   b . According to  FIG. 5   c  the locking lever  10   b  is locked in, the pivot axis  8   b  is released from the locking part  15   a  and the anti-lifting device  15   b  of the slider  15  engages with the safety catch  16 , with the result that the flap  3  is doubly secured against falling, on one side by the latching connection  10   a ,  10   b  and on the other side by the anti-lifting device  15   b . This shown position of the slider  15  corresponds to the in-use position during normal operation of the flap fitting. 
       FIGS. 6   a  to  6   d  show different views of the flap fitting, in which the height adjustment procedure is explained.  FIG. 6   a  shows a side view of the base  6   a  which is pre-fitted on a flap  3 , not represented. The bearing part  7 /attachment part  6   b  unit has been clipped onto the base  6   a  via a mechanical latching connection (locking lever  10   b ). The bearing part  7  can be adjusted by the differential height ΔH relative to the attachment part  6   b  by the height adjustment screw  13  shown in  FIG. 6   c .  FIG. 6   b  shows the flap fitting from FIG.  6   a , with the height H of the bearing part  7  adjusted.  FIG. 6   c  shows a vertical section through the flap fitting, in which the height adjustment screw  13 , provided to adjust the height of the flap  3 , is represented. This height adjustment screw  13  rests with its tapered section on the pin  14   b . The pin  14   b  is housed stationary on the attachment part  6   b , wherein the height of the bearing part  7  is adjusted upon actuation of the height adjustment screw  13 , and wherein the maximum height adjustment corresponds to the extent of the oblong hole  14   a .  FIG. 6   d  shows the detailed view G of the circle from  FIG. 6   c.    
       FIGS. 7   a  to  7   d  show different views of the flap fitting, in which the inclination adjustment procedure is explained.  FIG. 7   a  shows a side view of the flap fitting with slightly inclined bearing part  7  in relation to the base  6   a /attachment part  6   b  unit, while  FIG. 7   b  shows the parallel alignment (0° inclination) of the bearing part  7 .  FIG. 7   c  shows a vertical view through the flap fitting, wherein the inclination a can be changed by screwing in the inclination adjustment screw  12 , which on one side cooperates with an internal thread of the bearing part  7  and on the other side rests at its rear end on the attachment part  6   b . By screwing the inclination adjustment screw  12  clockwise the inclination angle α is increased, and decreased correspondingly when screwed counter clockwise.  FIG. 7   d  shows the detail F from  FIG. 7   c  with the bearing part  7  adjusted by the inclination angle α. 
       FIGS. 8   a  to  8   c  show different views of the flap fitting in which the lateral alignment or transverse adjustment procedure of the bearing part  7 /attachment part  6   b  unit relative to the base  6   a  is explained.  FIG. 8   a  shows a side view of the flap fitting with the side adjustment screw  11 .  FIG. 8   b  shows a section in the direction of the arrow J-J from  FIG. 8   a , while  FIG. 8   c  shows the enlarged detail from  FIG. 8   b . The side adjustment screw  11  is situated between the two arms of the U-shaped base  6   a  and is housed there stationary but rotatable. The side adjustment screw  11  has an external thread which engages with an internal thread of the attachment part  6   b . When the side adjustment screw  11  is screwed the width B of the attachment part  6   b  with its bearing part  7  attached thereto can thus be adjusted, wherein the maximum width adjustment corresponds to the distance between the two arms of the U-shaped base  6   a.    
       FIG. 9   a  and  FIG. 9   b  show an alternative embodiment example of the anti-twist device of the actuating arm  5   b . Instead of the slider  15  shown in  FIGS. 1 to 8  a rotatable part  21  is provided which in a first rotation position locks the pivot axis  8   b  in its swivel position and in a further rotation position permits a swivel movement of the pivot axis  8   b  and thereby also a swivelling of the actuating arm  5   b . The rotatable part  21  comprises a locking part in the form of a cylinder  21   a  with a cylinder axis  21   b . The cylinder  21   a  has a cylindrical recess  21   c  which runs across the cylinder axis  21   b . The cylindrical part of the pivot axis  8   b  also has a cylindrical depression  22  which runs across the longitudinal extension of the pivot axis  8   b . A twisting movement of the pivot axis  8   b  is possible in the rotation position shown in  FIG. 9   a  of the rotatable part  21 . 
       FIG. 9   b  shows this alternative anti-twist device on the flap-side furniture fitting with the bearing part  7 /attachment part  6   b  unit. The actuating arm  5   b  bears swivellable against the pivot axis  8   b  and in the shown rotation position of the rotatable part  21 , is not locked in its swivel position. 
       FIG. 10   a  shows a top view of the flap fitting mounted on the flap  3  with the anti-twist device shown in  FIGS. 9   a  and  9   b . The base  6   a  is mounted on the flap  3  and releasably connected to the bearing part  7 /attachment part  6   b  unit against which the two actuating arms  5   a  and  5   b  bear.  FIG. 10   b  shows the sectional representation in the direction of the arrow A-A from  FIG. 10   a . The rotatable part  21  is located in the rotation position in which it fixes the pivot axis  8   b  in its swivel position, as the recess  21   c  of the rotatable part  21  is facing away from the pivot axis  8   b . A twisting of the pivot axis  8   b  of the actuating arm  5   b  is not possible in the position shown in  FIG. 10   a  and  FIG. 10   b  of the rotatable part  21 . 
       FIGS. 11   a  and  11   b  show analogously the rotation position of the rotatable part  21  in which a twisting movement of the pivot axis  8   b  of the actuating arm  5   b  is possible. By rotating the rotatable part  21  by 180°, the cylindrical depression  21  has been screwed towards the pivot axis  8   b , with the result that the corresponding depressions  21   c  and  22  ( FIG. 9   a ) permit a rotary movement of the actuating arm  5   b . A particular advantage in the embodiment with this rotatable part  21  is, because of the rotation position shown in  FIG. 11   a  of the rotatable part  21 , access to the locking lever  10   b  is not possible. In addition to impeding the swivel movement, the rotatable part  21  fulfils a further function, namely that the locking lever  10   b  is unintentionally reached by the screwdriver. Unlike the active anti-lifting device  15   b  shown in  FIG. 4   b  which can be brought into engagement with the safety catch  16 , a passive safeguard against lifting is achieved by the rotation position of the rotatable part  21 . 
       FIG. 12   a  and  FIG. 12   b  show this passive safeguard according to the rotation position of the rotatable part  21 . In the position shown in  FIG. 12   a  of the rotatable part  21  the locking lever  10   b  can be actuated with a screwdriver  23 , while in the rotation position shown in  FIG. 12   b  of the rotatable part  21  an introduction of the screwdriver  23  is not possible. 
       FIG. 13   a  and  FIG. 13   b  show the embodiment of the rotatable part  21  according to  FIGS. 9 to 12 , which is part of the anti-twist device for the actuating arm  5   b . An actuating mechanism  4  with two actuating arms  5   a  and  5   b  is mounted on the side wall  2   d  of a cupboard-shaped piece of furniture.  FIG. 13   a  shows the completely open position of the flap  3 , wherein the pivot axis  8   b  is locked in its swivel position by the rotation position of the rotatable part  21  and an introduction of a screwdriver from above into the locking lever  10   b , not shown, in the base  6   a  is also possible.  FIG. 13   b  shows on the other hand the position twisted by 180° of the rotatable part  21 , wherein this position the pivot axis  8   b  of the actuating arm  5   b  is not locked. According to this Figure a swivelling of the actuating arms  5   a  and  5   b  is possible, but access to the locking lever  10   b  of the releasable attachment device is denied. 
       FIG. 14   a  schematically shows a variant of the invention. The piece of furniture  1  comprises a cabinet body  2  with a cabinet top  2   a  and a side wall  2   d . Arranged on every side wall  2   d  of the cabinet body  2  is an actuating mechanism  4  which has only one actuating arm  5   b  with two pivot axes  8   b  and  8   c  to move the furniture flap  3 . A guiding part  25   a  housed rotation-resistant (e.g. a rotation-resistant toothed wheel) is arranged coaxial to the pivot axis  8   c , wherein a cord  26 , preferably a toothed belt  27 , is guided over a further guiding part  25   b  (preferably a further toothed wheel). On the other hand, the further guiding part  25   b  is rotatably housed on the free end of the actuating arm  5   b  and is, however, connected rotation-resistant to the flap-side fitting part  6 . A forced guidance between the rotation-resistant guiding part  25   a  and the rotatable guiding part  25   b  (and thus of the flap-side fitting part  6  or the furniture flap  3 ) is made possible via the toothed belt  27 , with the result that the furniture flap  3  is guided constantly parallel to the front face of the furniture body  2  during its movement. A schematically represented slider  28 , which can be brought into engagement in a corresponding recess of the guiding part  25   b , can be seen at the free end of the actuating arm  5   b . The slider  28  is part of the anti-twist device, which is deactivated however in the shown Figure, i.e. the furniture flap  3  is substantially freely movable between a closing and an opening position. 
       FIG. 14   b  shows, on the other hand, the position of the slider  28  in which this engages in the recess of the guiding part  25   b . Thus, in addition to the rotation-resistant guiding part  25   a  on the cabinet body, the further guiding part  25   b  is also temporarily not rotatable and the toothed belt  27  keeps the actuating arm  5   b  in its completely open position, with the result that the furniture flap  3  can be conveniently fitted on the flap-side fitting part  6 , lockable relative to the actuating arm  5   b , without the added risk that the actuating arm  5  can slide off into the furniture body or spring up again by an impinging spring device and in the process cause injuries. 
     The present invention is not limited to the shown embodiment examples, but covers or extends to all variants and technical equivalents which may fall within the scope of the following claims. Also, the chosen positions in the description such as e.g. above, below, laterally etc. are related to the customary installation position of the shutter fitting or to the directly described and represented Figure and are to be transferred accordingly to the new position in the event of a change in position. The anti-twist device according to the invention can also be realized by providing a clamping device  8   b  gripping round the pivot axis  8   b . It also lies within the scope of the invention to arrange clamping eccentrics or similar for this purpose.