Abstract:
The invention relates to a food comminution device having a base part which has a cutting part, wherein the base part and the actuation part are articulatedly connected such that the actuation part can, for pushing through food items for comminution, be pivoted from a loading position toward the cutting part into a closed position and subsequently from the closed position back into the loading position, wherein the device has at least one drive device, in particular a spring drive, for assisting or effecting the pivoting movement from the closed position into the loading position and/or from the loading position into the closed position. The food comminution device is characterized in that the drive device is selectively activatable or deactivatable and/or in that the assistance force of the drive device is adjustable.

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
       [0001]    The present application is the U.S. national phase of International Application No. PCT/EP2013/077786 filed Dec. 20, 2013, which claims priority of German Application No. 10 2012 224 516.2 filed Dec. 28, 2012, the entirety of which is incorporated herein by reference. 
     
    
     FIELD OF THE INVENTION 
       [0002]    The invention relates to a food comminution device having an actuation part and having a base part which has a cutting part, wherein the base part and the actuation part are articulatedly connected such that the actuation part can, for pushing through food items to be comminuted, be pivoted from a loading position toward the cutting part into a closed position and subsequently from the closed position back into the loading position, wherein the food comminution device has at least one drive device, in particular a spring drive, for assisting or effecting the pivoting movement from the closed position into the loading position and/or from the loading position into the closed position. 
       BACKGROUND OF THE INVENTION 
       [0003]    Appliances of the type mentioned in the introduction for the comminution of relatively small food items such as mushrooms, for example, are known in the form of handheld appliances. 
         [0004]    For example, DE 102 42 651 A1 has described a cutting appliance for foodstuffs or similar items for cutting, having a cutting part on which there are fitted multiple substantially parallel blades which have cutting edges, said cutting edges forming a cutting surface for the items for cutting in order to cut said items into strips or slices or similar. An actuation part in the form of a plunger has a base surface which can be moved toward and away from the cutting surface, with the items for cutting situated in between. The base surface has groove-like or slot-like receptacles which substantially correspond to the blades and which have interposed webs. The base surface acts on the items for cutting and moves these toward the cutting surface and through between the blades. It is provided that the cutting part and the plunger are arranged in the region of the free end of a respective arm of the tongs, wherein the arms of the tongs are pivotably connected in the region of the other, free end by means of a pivot bearing, and wherein the arms of the tongs are preloaded into an open position by means of a spring. 
         [0005]    A similar appliance with a special cutting blade arrangement is known from DE 20 2007 018 922 U1. 
         [0006]    The appliances mentioned above are appliances which are held in one hand, similarly to a pair of tongs, and in the case of which the comminution process is performed by closing the hand in which the comminution device is held, with two arms of the tongs being pushed together as a result. 
         [0007]    As described below, appliances also exist which are of completely different design, and which are not held in the hand but which are placed on a worktop. These appliances normally have a container for the items for comminution. The only common aspect that these appliances share with the appliances mentioned above is the comminution principle, specifically the fact that the items for comminution are pushed through a cutting device. 
         [0008]    For example, DE 10 2009 023 167 A1 discloses a device for cutting foodstuffs, such as fruit and vegetables, having a cutting part which has multiple cutting edges, and having an actuation part, said cutting part and actuation part being mounted so as to be pivotable relative to one another. To cut the items for cutting, the actuation part is pushed toward the cutting part, wherein the actuation part has a plunger which pushes the items for cutting through the cutting part, wherein the cutting edges protrude into corresponding depressions of the plunger. The cutting part has a cutting frame in which cutting blades are held. The device furthermore has a cover part for mounting on a receiving container for the cut items, wherein the cover part has an opening which forms a passage for the cut items. 
         [0009]    Other devices for placing on a worktop are known for example from DE 20 2011 050 041 U1 and from DE 21 2005 000 048 U1. 
         [0010]    The known devices which are placed on a worktop do not have a drive device, such that both the pivoting movement from the loading position into the closed position and also the pivoting movement from the closed position into the loading position must be performed by the user. 
         [0011]    In the case of the handheld appliances described in the introduction, it may be the case, depending on the type of items for comminution, that the spring force is not adequate to move the arms of the tongs back into the initial position after a comminution process. This may be the case for example because parts of the items pass laterally between the blades and the walls of the slots of the pressing plunger, and thus jam the mechanism. On the hand, the provision of a very strong spring has the disadvantage that the user must impart not only the force for pushing the items for comminution through the cutting part but also the force for placing the spring under stress, such that the comminution of certain foodstuffs could become impossible if the manual force that the user is capable of imparting is not great enough. 
       SUMMARY OF THE INVENTION 
       [0012]    It is the object of the present invention to specify a food comminution device which can be individually adapted to different comminution requirements of different foodstuffs. 
         [0013]    The object is achieved by means of a food comminution device which is characterized in that the drive device is selectively activatable or deactivatable and/or in that the assistance force of the drive device is adjustable. 
         [0014]    A deactivation is preferably realized by virtue of the actuation part being freely pivotable relative to the base part when the drive device is deactivated. It may however also be provided that a deactivation is realized by virtue of pivoting of the actuation part relative to the base part no longer being possible. 
         [0015]    The food comminution device according to the invention has the advantage that it can be adjusted, in accordance with the type of items for comminution, such that a fast and efficient comminution process is always made possible. 
         [0016]    For example, in the case of a food comminution device in which the drive device has at least one spring which is placed under stress during the pivoting of the actuation part from the loading position into the closed position and which relaxes so as to assist the pivoting movement of the actuation part from the closed position into the loading position, a deactivation of the drive device may be realized if particularly hard foods are to be comminuted, for which purpose the user requires their full force in any case. This prevents a situation in which the user must additionally impart additional energy for placing the spring under stress during the pivoting of the actuation part from the loading position into the closed position. 
         [0017]    By contrast, for the comminution of foodstuffs which can be pushed through the cutting part by means of the actuation part with little expenditure of force, the drive may be activated; for example in order to assist or automatically effect the pivoting of the actuation part from the closed position into the loading position. 
         [0018]    In the case of a food comminution device in which the assistance force of the drive device is adjustable, it is advantageously possible, for example in a manner dependent on the cuttability of the foodstuff, for an intermediate setting between full deactivation and full activation to be selected. 
         [0019]    In a very particularly advantageous embodiment, it may advantageously be provided that multiple, in particular precisely two, drive devices and multiple, in particular precisely two, coupling devices are provided, and in that each of the drive devices is selectively activatable or deactivatable in each case by means of one coupling device. In particular, it may advantageously be provided that the multiple drive devices are activatable or deactivatable independently of one another. 
         [0020]    Such an embodiment has the very special advantage that assistance or generation of the pivoting movement can be fully deactivated through deactivation of all drive devices, that maximum assistance or generation of the pivoting movement is possible through activation of all drive devices, and that furthermore, that an intermediate setting can be realized through activation of only some of the drive devices. 
         [0021]    In a very particularly advantageous embodiment, the food comminution device has two joints which are arranged mirror-symmetrically with respect to one another and which have coaxial pivot axes and which serve for the articulated coupling of the actuation part to the base part. In this case, it may be provided in particular that each of the joints has a drive device, or that a dedicated drive device is installed at each of the joints. It is preferably also the case that the drive devices are constructed and arranged mirror-symmetrically relative to one another. 
         [0022]    In a particular embodiment, the drive device is selectively activatable or deactivatable by means of a switchable coupling device. In particular, it may be provided that mechanical coupling of the drive device to the base part and/or to the actuation part can be effected, for example through the production of a positively locking connection or a frictionally locking connection, by means of the coupling device. 
         [0023]    In a particular embodiment, the coupling device has a coupling element which can be transferred into either a coupling position or a decoupling position, wherein mechanical, in particular positively locking and/or rotationally conjoint, coupling of a spring of the drive device to the base part or to the actuation part is effected by the coupling element in the coupling position, and the mechanical coupling is eliminated in the decoupling position. In particular, it may be provided that one end and/or one leg of the spring is fixedly connected to the actuation part, whereas the other end or the other leg of the spring can be selectively coupled to the base part by means of the coupling element. It is self-evidently also conversely possible for one end and/or one leg of the spring to be fixedly connected to the base part, whereas the other end or the other leg of the spring can be selectively coupled to the actuation part by means of the coupling element. 
         [0024]    In particular, it may advantageously be provided that the coupling element, when in the coupling position, engages into a recess of the base part or of the actuation part and, in the decoupling position, is arranged outside the recess. 
         [0025]    In particular if a torque imparted by the drive unit is to be transmitted so as to assist or effect the pivoting movement, it may advantageously be provided that the coupling element, when in the coupling position, is arranged so as to be non-rotatable relative to the recess, into which it engages, of the base part or of the actuation part. This may be achieved for example in that the coupling element is of non-circular, in particular polygonal, form in cross section and, in the coupling position, engages into a corresponding non-circular, in particular polygonal, recess of the base part or of the actuation part. 
         [0026]    In a particular embodiment, the coupling element is in the form of an in particular linearly displaceable slide. In this case, it may be provided in particular that said slide, in order to effect the coupling position, can be slid, in particular in positively locking and/or non-rotatable fashion, into a recess of the base part or of the actuation part, and in order to effect the decoupling position, is pulled out of the recess of the base part or of the actuation part. 
         [0027]    In an advantageous embodiment, which makes it possible in particular for the drive device or the drive devices to be accommodated in a particularly space-saving manner and in a position which does not disrupt the comminution process, it is provided that the articulated connection is formed by at least one joint, in particular a hinged joint, with a joint head and a joint head receptacle, wherein at least one component of the drive device is part of the joint. It may alternatively or additionally be provided that the drive device is arranged in the region of the joint, and/or can be mechanically coupled to parts of the joint in order to effect the coupling position. 
         [0028]    In a particular embodiment, the recess into which the coupling element can engage is arranged in one part of the articulated connection, in particular in a joint head or in a joint head receptacle. 
         [0029]    In the case of such an embodiment in particular, it may for example be provided that the coupling element is arranged, in particular movably, in a part of the articulated connection, in particular in a joint head or in a joint head receptacle, and/or that the coupling element forms a part of the articulated connection, in particular a joint head. 
         [0030]    In a particularly reliable and compact embodiment, the coupling element, which is for example in the form of a slide, is arranged on the pivot axis of the articulated connection. In particular, it may be provided here that the coupling element is guided so as to be displaceable along the pivot axis of the articulated connection. 
         [0031]    In a particular embodiment, the actuation part has a joint head receptacle into which a joint head, which is for example in the form of a peg, of the base part can be received for the purpose of binding the articulated connection. Furthermore, in this embodiment, the joint head receptacle preferably has a guide for a coupling element which is in the form of a slide and which can be displaced along the pivot axis of the articulated connection either into a coupling position or into a decoupling position. In the coupling position, a free end of the slide engages rotationally fixedly into a recess of the joint head and thus couples a spring which is fixed to the actuation part, in particular a spiral spring or helical spring or a leg spring, to the base part. As the actuation part pivots relative to the base part, the spring is placed under stress, and energy for the return pivoting movement is stored. 
         [0032]    In this case, it may be provided in particular that the spring is at least partially in the form of a spiral spring which concentrically surrounds the pivot axis, wherein the outer end of the spiral spring is fixed to the actuation part, whereas the inner end of the spiral spring is arranged in a longitudinal slot of the coupling element which is in the form of a slide. In this way, it is made possible for the slide to be displaced along the pivot axis without bending the spiral spring. 
         [0033]    It is also possible for the spring to be in the form of a helical spring, wherein one end of the helical spring is arranged in linearly displaceable fashion in a longitudinal slot of the coupling element which is in the form of a slide, whereas the other end is fixed to the actuation part. 
         [0034]    To effect rotationally rigid coupling of the coupling element to the base part, provision may be made, as already discussed, for the coupling element to be of non-circular form in cross section at its free end, such that it cannot rotate in the correspondingly formed receptacle. 
         [0035]    In a very particularly advantageous embodiment, the articulated connection is designed such that the actuation part, at least in a particular pivoting position, in particular in the loading position, is detachable from the base part, in particular exclusively by virtue of the actuation part and base part being pulled apart. Such an embodiment has the very particular advantage that the base part and the actuation part can, for example for a cleaning process, be separated from one another easily and preferably without the aid of a tool. A further advantage of such an embodiment lies in the fact that the actuation part can also, if necessary, be exchanged for a different actuation part, for example with a different pressing plunger for a different cutting part. 
         [0036]    Such tool-free separability of the base part and actuation part may for example be realized by virtue of the joint head receptacle having a radial opening through which the joint head can be removed from or inserted into the joint head receptacle in a radial direction. 
         [0037]    In a very particularly advantageous embodiment, the articulated connection is designed such that the actuation part, at least in a particular pivoting position, in particular in the loading position, is detachable from the base part, in particular exclusively by virtue of the actuation part and base part being pulled apart, regardless of whether the drive device is activated or deactivated and/or regardless of whether the coupling element is situated in the coupling position or in the decoupling position. 
         [0038]    This may be achieved for example by virtue of the receptacle having an additional, in particular radially oriented opening through which the coupling element can be removed from the receptacle preferably in a radial direction, that is to say perpendicular to the pivot axis. In the case of such a design, it is accordingly not necessary for the coupling element to initially be transferred into the decoupling position and thus removed from the receptacle in order to permit a detachment of the actuation part from the base part. Rather, as already mentioned, the coupling element can be removed from the receptacle through the additional opening. 
         [0039]    As already mentioned, it may advantageously be provided that the activated drive device is supported at one side on the base part and at the other side on the actuation part, and/or that the activated drive device acts and/or is arranged between the base part and the actuation part. 
         [0040]    As already mentioned, it may advantageously be provided that the articulated connection is formed by at least one joint, in particular a hinged joint, with a joint head and a joint head receptacle. 
         [0041]    In particular, it may advantageously be provided that the base part, on the one hand, has at least one joint head and the actuation part, on the other hand, has a corresponding joint head receptacle for forming an articulated connection, or that the actuation part, on the one hand, has at least one joint head and the base part, on the other hand, has a corresponding joint head receptacle for forming an articulated connection. 
         [0042]    In the case of such a device, it may advantageously be provided that the activated drive device is supported at one side on the joint head and at the other side on the joint head receptacle. It may alternatively or additionally also be provided that the drive device is arranged on and/or in the joint and/or that at least one component of the drive device is part of the joint. 
         [0043]    As has likewise already been mentioned, the drive device may have at least one spring, in particular a spiral spring or a helical spring or a leg spring. The drive device may alternatively or additionally also have a gas pressure spring. The drive device may also be in the form of an electromotive drive device. 
         [0044]    In a particular embodiment, the drive device has at least one spring which is placed under stress during the pivoting of the actuation part from the loading position into the closed position and which relaxes so as to assist the pivoting movement of the actuation part from the closed position into the loading position. It is alternatively also possible for the drive device to have at least one spring which is placed under stress during the pivoting of the actuation part from the closed position into the loading position and which relaxes so as to assist the pivoting movement of the actuation part from the loading position into the closed position. In a particular embodiment, switching between the two abovementioned operating modes is possible. 
         [0045]    The device may in particular be designed to be placed on a worktop for a comminution process. For example, the device may have a stand, for example with supporting feet, for placing on a worktop. In particular, a container for collecting the comminuted foodstuff may also be designed, and function, as a stand. 
         [0046]    The device may advantageously be in the form of a cover which can be mounted on a container—preferably so as to completely cover the container opening—and/or can be fixed to a container. The comminuted foodstuff can in this way be safely and reliably collected in the container. In particular, in this way, it is also realized that undesired articles are prevented from passing into the meal in the container. This applies in particular in the case of multiple meals being prepared simultaneously in a kitchen area. Furthermore, removal of the device after use is not necessary in order to attach a separate cover. This applies in particular in the case of short time intervals between periods of use of the device. 
         [0047]    In a particular embodiment, the base part is in the form of a container for the comminuted foodstuff. Furthermore, a container of said type may also be in the form of a stand for enabling the food comminution device to be placed on a worktop. 
         [0048]    However, regardless of whether or not the base part is also in the form of a container, it may advantageously be provided that the base part is additionally in the form of a stand for enabling the food comminution device to be placed on a worktop or has a stand for enabling the food comminution device to be placed on a worktop. 
         [0049]    What is very particularly advantageous is a kitchen appliance which has a container for collecting the comminuted items and a food comminution device according to the invention which is designed as a cover for the container. In this case, it may advantageously be provided in particular that the food comminution device in the form of a cover can be mounted on the container so as to completely cover the container opening. In particular, it may additionally be provided that, for a comminution process, the food comminution device can be fixed temporarily to the container edge, for example by way of a screw connection or by way of a detent connection. 
         [0050]    It is advantageously possible for the kitchen appliance to be designed to be placed on a worktop for a comminution process. Here, it may advantageously be provided in particular that the container is in the form of a stand for enabling the food comminution device to be placed on a worktop. For example, supporting feet, in particular non-slip supporting feet composed of rubber or some other elastic material, may be arranged on the outer side of the base of the container. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWING VIEWS 
         [0051]    The subject matter of the invention is schematically illustrated in the drawing and will be described below on the basis of the figures, wherein identical elements or elements of identical action are normally denoted by the same reference signs. In the drawing: 
           [0052]      FIG. 1  shows an exemplary embodiment of a food comminution device according to the invention in a perspective view, 
           [0053]      FIG. 2  shows a detail view of a joint head, 
           [0054]      FIG. 3  shows a detail view of the joint head receptacles and of the drive devices, 
           [0055]      FIG. 4  shows two diagrammatic illustrations which illustrate the activation and deactivation of a drive device, 
           [0056]      FIG. 5  shows a detail view of the joints and of the drive devices, 
           [0057]      FIG. 6  shows the actuation part with the drive device activated and deactivated, and 
           [0058]      FIG. 7  shows detail views of the joints and of the drive devices in the activated state and in the deactivated state. 
       
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
       [0059]      FIG. 1  shows an exemplary embodiment of a food comminution device according to the invention which has a base part  2  with a receptacle for an exchangeable cutting part  3 . In the exemplary embodiment illustrated, the cutting part  3  comprises a first cutting region  4  and a second cutting region  5 , wherein the cutting regions  4 ,  5  each have different cutting blade arrangements. 
         [0060]    The food comminution device  1  furthermore has an actuation part  6  which is articulatedly connected to the base part  2  such that, for pushing through foodstuffs for comminution, said actuation part can be pivoted from the illustrated loading position, in which items for comminution can be placed onto the cutting part  3 , toward the cutting part  3  into a closed position (not illustrated), as indicated by the curved arrow in the figure. 
         [0061]    The actuation part  6  has a first pressing plunger  7  and a second pressing plunger  8 . The first pressing plunger  7  serves for pushing a foodstuff that has been placed onto the first cutting region  4  of the cutting part  3  through the first cutting region  4 , wherein the foodstuff is cut into pieces by the cutting blades of the first cutting region  4 . The second pressing plunger  8  serves for pushing a foodstuff that has been placed onto the second cutting region  5  of the cutting part  3  through the second cutting region  5 , wherein the foodstuff is cut into pieces by the cutting blades of the second cutting region  5 . 
         [0062]    After being cut into pieces, the foodstuff falls into a container  9 , which simultaneously serves as a stand for enabling the food comminution device  1  to be placed on a worktop (not illustrated). The food comminution device  1  is in the form of a cover which can be mounted onto the container  9  with detent action and so as to completely cover the container opening. After all of the foodstuff for processing has been pushed through the cutting part  3 , the food comminution device  1  can be removed from the container  9 , for example in order for the container  9  to be emptied. 
         [0063]    The base part  2  has a frame  13  which provides the receptacles for the cutting part  3 . Furthermore, the base part  2  has two joint heads (illustrated in detail in  FIG. 2 ) which, in interaction with the joint receptacles of the actuation part  6 , permit an articulated coupling of the actuation part  6 . 
         [0064]    In the exemplary embodiment illustrated, the articulated connection of the actuation part  6  to the base part  2  is formed by two joints  10  which are of mirror-symmetrical construction and which are arranged mirror-symmetrically with respect to one another. The joints  10  are in the form of hinged joints with mutually coaxial pivot axes  11 , and will be described in more detail below. 
         [0065]    In the region of each of the joints  10  there is arranged in each case one drive device  12  for assisting or effecting the pivoting movement from the closed position into the loading position, which drive devices will likewise be described in more detail below. 
         [0066]      FIG. 2  shows a detail view of one of the joint heads  14  arranged on the inner side of the frame  13 . The joint head  14  is substantially in the form of a peg which projects inward from the frame  13  and which has parallel walls such that a joint head receptacle  15  of the actuation part  6 , as can be seen in  FIG. 3 , can be pushed on. For this purpose, the joint head receptacles  15  each have a radial opening  16 , which radial openings enable the actuation part  2  to be pushed onto the joint heads  14  in the loading position. The width of the joint heads  14  is selected specifically such that they fit through the radial openings  16  of the joint head receptacles  15  but can no longer exit the joint head receptacles  15  when the actuation part  2  has been pivoted from the loading position into a different pivoting position. In this way, it is ensured that the actuation part  2  does not inadvertently become detached during the comminution process. 
         [0067]    As will be presented in detail below, an activation of the drive device  11  is realized in each case by virtue of the free end  17  of a slide  18  being slid rotationally fixedly into a recess  19  of the joint head  14 . A co-rotation of the slide  18  in the coupled position is prevented by virtue of the free end  17  of the slide  18  and the recess  19  being of non-circular form, in the present example cuboidal. For the deactivation of the drive device  11 , the slide  18  is pulled out of the recess  19  again. 
         [0068]    To enable the actuation part  6  to be detached from the base part  2  in the loading position even when the slide  18  is in the coupled position, the recess  19  and the joint heads  14  likewise have radial openings  20  which make it possible for the free ends  17  of the slides  18  to be pulled out of the recesses  19  perpendicularly to the pivot axes  11 . By means of this configuration, it is advantageously achieved that the actuation part  6  can be detached from the base part  2  regardless of the position of the slides  18 . Accordingly, the user is not forced to deactivate the drive devices before being able to detach the actuation part  6  from the base part  2 , for example for a cleaning process. 
         [0069]      FIGS. 4   a  and  4   b  each show a joint  10  which is formed from a joint head receptacle  15  of an actuation part  6  and a joint head  14  of a base part  3 , and illustrate the principle of the activation and deactivation of the drive device, which is in the form of a helical spring  24 . 
         [0070]    The joint  10  makes it possible for the actuation part  6  to be pivoted relative to the base part  2  about a pivot axis  11 . In the actuation part  6  there is provided a linear guide  21  in which a coupling element  23 , which is in the form of a slide  18 , is guided in linearly displaceable fashion along the pivot axis  11 . 
         [0071]    The helical spring  24  concentrically surrounds the pivot axis  11 , the linear guide  21  and the slide  18 . A first end  25  of the helical spring  24  is in the form of a leg, and is fixed to the actuation part  6 . The other end  26  of the helical spring  24  is bent at an angle and is guided in linearly displaceable fashion in a longitudinal slot  22  of the slide  18 . 
         [0072]    The free end  17  of the slide  18  is of non-circular, specifically cuboidal, form and, in the coupling position as shown in  FIG. 4   a , engages in positively locking fashion into a cuboidal recess  19  of the joint head  15 . In said coupling position, the helical spring is placed under stress when the actuation part  6  is pivoted relative to the base part  2 , for example during the movement from the loading position into the closed position. During the opposite pivoting movement, the helical spring  24  relaxes and thus effects or assists the opposite pivoting movement, for example from the closed position into the loading position. 
         [0073]    To deactivate the drive device, the free end  17  of the slide  18  is pulled out of the recess  19 . This is illustrated in  FIG. 4   b . In this decoupled position, the actuation part  6  can be pivoted relative to the base part  2  without the helical spring  24  being placed under stress. Rather, in this decoupled position, the coupling element  23  can co-rotate freely with the actuation part  6 . 
         [0074]      FIG. 5  shows, in a perspective illustration, the principle of the activation and deactivation of the drive device  12  which has the helical spring  24 . It can be clearly seen that the left-hand drive device is deactivated because the free end  17  of the slide  18  has been pulled out of the recess  19 . 
         [0075]      FIGS. 6   a  and  6   b  each show an actuation part  6 , and illustrate the positions of the free ends  17  of the slides  18 . In the case of the actuation part  6  illustrated in  FIG. 6   a , the free end  17  is situated in a retracted position in which it does not engage into a recess of the base part  2 . In this position, the drive device is deactivated. 
         [0076]    In the case of the actuation part  6  illustrated in  FIG. 6   b , the free end  17  is situated in an advanced position in which it engages into a recess of the base part  2 . In this position, the drive device is activated. 
         [0077]    In the setting illustrated in  FIG. 7   a , the drive device of the left-hand joint is deactivated, because the free end  17  of the slide  18  is not engaged into the corresponding recess  19  of the actuation part  6 . 
         [0078]    In the setting illustrated in  FIG. 7   b , the drive device of the left-hand joint is activated, because the free end  17  of the slide  18  is engaged into the corresponding recess  19  of the actuation part  6 . 
       LIST OF REFERENCE NUMERALS 
       [0000]    
       
         
           
               1  Food comminution device 
               2  Base part 
               3  Cutting part 
               4  First cutting region 
               5  Second cutting region 
               6  Actuation part 
               7  First pressing plunger 
               8  Second pressing plunger 
               9  Container 
               10  Joints 
               11  Pivot axes 
               12  Drive devices 
               13  Frame 
               14  Joint heads 
               15  Joint head receptacles 
               16  Radial openings in the joint head receptacles 
               17  Free end 
               18  Slide 
               19  Recess 
               20  Radial openings in the joint heads 
               21  Linear guide 
               22  Longitudinal slot 
               23  Coupling element 
               24  Helical spring 
               25  First end of the helical spring 
               26  Other end of the helical spring