Abstract:
The invention concerns a control cabinet arrangement ( 1 ) with a control cabinet ( 2 ), a mounting plate ( 6 ) having a front face ( 14 ), a rear face ( 13 ) and an opening ( 8 ), in which the control cabinet ( 2 ) is arranged, a frame and a retainer device. The invention is based on the task of providing a simple assembly of a control cabinet arrangement. For this purpose, the retainer device comprises several bolts ( 16 ) abutting the rear face ( 13 ) of the mounting plate ( 6 ), at least one bolt ( 16 ) being displaced into a spacing on the rear face ( 13 ) of the mounting plate ( 6 ) by the interaction of the control cabinet ( 2 ) and the frame ( 7 ).

Description:
CROSS REFERENCE TO RELATED APPLICATIONS 
       [0001]    This application is entitled to the benefit of and incorporates by reference essential subject matter disclosed in International Patent Application No. PCT/DK2009/000214 filed on Sep. 29, 2009 and German Patent Application No. 10 2008 049 864.5 filed on Oct. 1, 2008. 
       FIELD OF THE INVENTION 
       [0002]    The invention relates to a control cabinet arrangement with a control cabinet, a mounting plate having a front face, a rear face and an opening, in which the control cabinet is arranged, a frame and a retainer device. 
       BACKGROUND OF THE INVENTION 
       [0003]    Such a control cabinet arrangement is known from WO 03/081153 A1. The known control cabinet arrangement is used in household appliances, for example in a refrigerator with the purpose of adjusting refrigerator functions. In the known case, the mounting plate is formed by the front of the refrigerator door or a plate at the front of the refrigerator. For fixing the control cabinet, a rear face cover is located at the rear face of the mounting plate. Subsequently, polyurethane is pumped into the spacing on the rear face in order to fix the rear face cover. Then the control cabinet is inserted and retained in the rear face cover by mounting the frame. Such an assembly is troublesome and requires a plurality of units. Further, the opening in the mounting plate has a relatively complicated contour. The rear face of the mounting plate must be accessible for the mounting of the rear face cover. 
       SUMMARY OF THE INVENTION 
       [0004]    The invention is based on the task of providing a simple assembly of a control cabinet arrangement. 
         [0005]    With a control cabinet as mentioned in the introduction, this task is solved in that the retainer device comprises several bolts abutting on the rear face of the mounting plate, at least one bolt being displaced into a spacing on the rear face of the mounting plate by the interaction of the control cabinet and the frame. 
         [0006]    The assembly of such a control cabinet arrangement merely requires access to the front face of the mounting plate. It is then possible to insert the control cabinet and the frame into the opening from the front face, the insertion triggering a movement of at least one bolt, which will then be displaced behind the mounting plate. Thus, the bolt will form a form-fitting connection with the mounting plate, without requiring access to the rear face of the mounting plate. As the control cabinet and the frame have to be inserted into the mounting plate anyway, additional assembly steps for fixing the control cabinet in the mounting plate are not required. In a manner of speaking, the fixing appears during insertion. Also additional fixing elements, such as screws or nuts, are not required. Tools are not required for the assembly either. 
         [0007]    Preferably the control cabinet and the frame are connected to one another by means of a latch connection. The latch connection prevents an unintentional separation of the control cabinet and the frame. Such a separation could influence the fixing of the control cabinet in the mounting plate. The latch connection can, of course, be detached by applying external forces. During normal operation, however, such forces should not be feared. This is particularly the case, when the control cabinet arrangement is used with household appliances, for example a refrigerator, a washing machine, a laundry drier, a cooker, a cooker hood, an ironing machine or the like, in which the control cabinet is only required for the adjustment of functions. The latch connection is dimensioned so that it can adopt forces appearing during adjustment work without problems. 
         [0008]    Preferably, the bolt engages the mounting plate at the edge of the opening. Thus, the bolt does not only rest on the rear face of the mounting plate. The bolt, or an element connected to it, also engages the front face of the mounting plate. In a manner of speaking, the mounting plate is thus jammed between the combination of control cabinet and frame. This results in a good fixing of the control cabinet in the mounting plate. 
         [0009]    Preferably, in the area of the edge, the bolt has a curvature on the side facing the edge. This enables the bolt to engage differently thick mounting plates. The mounting plate projects into the curvature. In this connection, it is favourable for the bolt to have a certain flexibility, at least in the area of the curvature. However, this flexibility should only be large enough to accommodate different thicknesses of the mounting plate, not, however, to influence the fixing of the control cabinet in the mounting plate. 
         [0010]    Preferably, in relation to the thickness of the mounting plate between the front face and the rear face, the bolt has a retaining dimension, and the mounting plate has a thickness that corresponds to the retaining dimension ±35%. The design of the bolt engaging the mounting plate at the edge of the opening thus makes it possible to use differently thick mounting plates. Accordingly, a control cabinet arrangement can be used for different purposes. 
         [0011]    Preferably, the bolt has a tolerance compensation that amounts to up to 1 mm. Accordingly, the dimensions of the opening, into which the control cabinet and the frame are inserted, can deviate by up to ±0.5 mm from a nominal size without influencing the insertion of the control cabinet into the mounting plate. The tolerance compensation depends on the size of the control cabinet. With smaller control cabinets, the overall tolerances are smaller. 
         [0012]    In a preferred embodiment, it is provided that the bolt is arranged on the frame and displaced to the rear face of the mounting plate by the control cabinet. In this case, the frame is mounted on the control plate first. In the simplest case, this is done in that the frame is inserted into the opening of the mounting plate. When the control cabinet has then been inserted into the frame, the bolt or bolts are outwardly displaced in relation to the frame, so that they reach the spacing on the rear face of the mounting plate to form a form-fitting connection with the mounting plate. 
         [0013]    Preferably, at least in the area of the bolt, the frame rests on the front face of the mounting plate. Thus, the frame forms the part of the corresponding bolt that engages the mounting plate in the area of the edge of the opening. Additional measures are not required. 
         [0014]    In an alternative embodiment, it is provided that the bolt is arranged at the control cabinet and displaced to the rear face of the mounting plate by the frame. In this case, the mounting takes place in the opposite order. First the control cabinet and then the frame are inserted into the opening, the frame displacing the bolt away from the control cabinet and into the spacing on the rear face of the mounting plate. 
         [0015]    Preferably, the bolt has a projection on the side facing the control cabinet. This provides a force or movement ratio, that is, the projection can be used to displace the bolt by a sufficient path into the spacing on the rear face of the mounting plate. 
         [0016]    It is particularly preferred that the frame has an inclined face interacting with the projection. This facilitates the mounting. It is also possible not to form the inclination until the bolt with its projection presses against the frame. 
         [0017]    Preferably, the bolt is biased in the direction of the control cabinet. Thus, when (in the one embodiment) the control cabinet or (in the other embodiment) the frame is pulled out of the mounting plate, the bolt or bolts spring back, so that the control cabinet and/or the frame is released from the mounting plate and can be removed again without problems. 
         [0018]    Preferably, the control cabinet has an at least partially transparent cover that is located at a front face of the control cabinet and extends with a side wall section at least partly to at least one side wall, the side wall section acting upon the bolt. Thus, the cover of the control cabinet is jammed on the control cabinet itself by the bolt, so that the durability of the cover of the control cabinet is improved. 
         [0019]    Preferably, the frame has a catch arrangement that engages the mounting plate. In particular when the frame is mounted on the mounting plate first, this embodiment has the advantage that the frame can be temporarily connected to the mounting plate. This facilitates the handling. After insertion of the frame into the opening of the mounting plate, the installer has both hands free again for the subsequent mounting of the control cabinet, without risking that the frame falls out of the mounting plate. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0020]    In the following, the invention is described on the basis of preferred embodiments in connection with the drawings, showing: 
           [0021]      FIG. 1  is a first embodiment of a control cabinet arrangement in a perspective, exploded view, 
           [0022]      FIG. 2  shows the control cabinet arrangement with a frame inserted into a mounting plate, 
           [0023]      FIG. 3  is an enlarged view of a part of  FIG. 2  in a section, 
           [0024]      FIG. 4  is a view according to  FIG. 3  with inserted control cabinet, 
           [0025]      FIG. 5  shows the control cabinet arrangement in a perspective view in the mounted state, 
           [0026]      FIG. 6  is a section enlargement from  FIG. 5 , 
           [0027]      FIG. 7  shows the control cabinet arrangement according to  FIG. 2  from another view angle, 
           [0028]      FIG. 8  is a second embodiment of a control cabinet arrangement in a perspective, exploded view, and 
           [0029]      FIG. 9  is a sectional view of the control cabinet arrangement according to  FIG. 8 . 
       
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
       [0030]    A control cabinet arrangement  1  comprises a control cabinet  2  that is provided with a transparent cover  3 . The transparent cover  3  (that does not have to be transparent all over) comprises a side wall section  4  that is led over a side wall of the control cabinet  2 . The cover  3  is connected to the control cabinet  2  at fixing points  5 . 
         [0031]    In the following, the invention is described on the basis of applying the control cabinet arrangement  1  in connection with a refrigerator. For this purpose, the control cabinet  2  comprises a control electronic for the refrigerator and a display that can be seen through the transparent cover  3 . Further, the control cabinet  2  can also comprise operating elements, for example in the form of keys or the like, which can be activated through the transparent cover  3 . For reasons of clarity, a cable connecting the control cabinet  2  to other elements of the refrigerator is not shown. 
         [0032]    The control cabinet  2  is to be mounted in a mounting plate  6 . The mounting plate  6  forms, for example, the front face of a refrigerator door or the front face of a refrigerator housing. Thus, the mounting plate  6  can also be called “chassis”. 
         [0033]    The control cabinet arrangement  1  also comprises a frame  7 . In the embodiments according to the  FIGS. 1 to 7 , the frame  7  is located between the control cabinet  2  and the mounting plate  6 , when the control cabinet  2  is built into the mounting plate  6 . 
         [0034]    For the accommodation of the control cabinet  2  and the frame  7 , the mounting plate  6  has an opening  8 . The opening  8  is surrounded by an edge  9 . The opening  8  can simply have a rectangular shape or another shape adapted to the control cabinet  2 . Otherwise, a working of the mounting plate  6  is not required. 
         [0035]    In the side wall section  4  of the cover  3 , the control cabinet  2  comprises a groove  10 . Only one groove  10  is visible. On the opposite side of the control cabinet  2  a corresponding groove is available. The frame  7  comprises a catch projection  11  that engages the groove  10 , when the control cabinet  2  is inserted into the frame  7 . The interaction of the catch projection  11  and the groove  10  forms a catch connection that can resist the forces usually appearing during normal operation. 
         [0036]    The frame  7  comprises a catch  12  that engages behind a rear face  13  of the mounting plate  6 . On the opposite front face  14  of the mounting plate  6  the frame  7  rests on a circumferential bearing face  15 . The catch  12  can be led past the mounting plate  6 , as the frame  7  has a sufficient flexibility. When inserting the frame  7  into the opening  8  of the mounting plate  6 , the side of the frame comprising the catch  12  will be inwardly deformed, and can then spring back again. 
         [0037]    Further, the frame  7  has several bolts  16  that are connected to the frame  7  via a flexible support  17 . Due to the support  17 , the bolts  16  are biased in the direction of the inside of the frame  7 , that is, in the direction of the eventual location of the control cabinet  2 . The bolts  16  can be pressed through openings  18  in a side wall  19  of the frame  7 , when the control cabinet  2  is inserted into the frame  7 . 
         [0038]    In the area of the support  17 , the bolt  16  has an curvature, in which the mounting plate  6  engages, when the bolt  16  has been moved in a spacing on the rear face  13  of the mounting plate  6  by the control cabinet  2 . The curvature  20  makes it possible to use the same frame  7  with different mounting plates  6 , whose thicknesses differ. The bolts are, for example, provided for a certain thickness of the plate  6 , in the following called “retaining dimension”. The bolts  16  can, however, also provide a sufficiently stable connection between the frame  7  and the mounting plate  6 , when the thickness of the plate is up to 35% larger or smaller than this retaining dimension. 
         [0039]    The fact that the supports  17  of the bolts  16  are made with a certain flexibility causes that the opening  8  does not have to be manufactured with an excessively large accuracy. Both in the length and in the width the opening  8  can have a tolerance in the order of up to ±0.5 mm, depending on the size of the control cabinet. 
         [0040]    The mounting of the control cabinet  2  with the embodiment shown in the  FIGS. 1 to 7  now takes place as follows: 
         [0041]    First, the frame  7  is inserted into the opening  8 , until the bearing face  15  rests on the front face  14  of the mounting plate  6 . The catch  12  engages behind the rear face  13  of the mounting plate. Thus, the frame  7  is temporarily fixed to the mounting plate  6 . 
         [0042]    In this embodiment, the control cabinet  2  is then inserted into the frame  7 . The control cabinet  2  then comes to rest on the inwardly projecting bolts  16  and presses them towards the outside through the openings  18  in the wall  19 , so that the bolts  16  engage under the rear face  13  of the mounting plate  6 . In this connection, the bolts  16  only bear on the side wall of the control cabinet  2 . Thus, it is not necessary in any way to locate the bolts behind the bottom of the control cabinet  2 . Thus, it is possible to use control cabinets  2  with different heights. 
         [0043]    When the control cabinet  2  has been inserted far enough into the frame  7 , the catch projection  11  on the frame  7  will engage the groove  10  on the control cabinet  2 , so that the control cabinet  2  interlocks with the frame  7 . The control cabinet  2  is then held captive in the frame  7  and continuously holds the bolt  16  in the position shown in  FIG. 6 , so that the frame  7  cannot be removed from the mounting plate  6 . 
         [0044]    A further embodiment is shown in the  FIGS. 8 and 9 . Here, the same elements have the same reference numbers as in the  FIGS. 1 to 7 . 
         [0045]    In this embodiment, the bolts  16  are located at the control cabinet  2 . On their upper ends, the bolts  16  have a connector  22 . In this embodiment, first the control cabinet  2  is inserted into the opening  8  of the mounting plate  6 . In this connection, the connectors  22  of the bolts  16  rest on the front face  14  of the mounting plate  6 . In a horizontal position of the mounting plate  6 , a provisional positioning of the control cabinet  2  in relation to the mounting plate  6  is ensured. 
         [0046]    Subsequently, the frame  7  is inserted into a gap between the control cabinet  1  and the mounting plate  6 . The frame  7  has a number of projections  23  corresponding to the number of bolts  16 . These projections  23  are provided with inclined faces  24 . The bolt  16  has a projection  25  in the direction away from the edge  9  of the opening  8 , the inclined face  24  resting on said projection  25 . This means that, when the frame  7  has been mounted on the mounting plate  6  and the projections  23  interact with the bolts  16 , the inclined face  24  presses the projection  25  towards the outside, so that the bolt  16  again engages the rear face  13  of the mounting plate  6 . Also with this embodiment, the control cabinet  2  is held in the mounting plate  6  with sufficient stability. 
         [0047]    While the present invention has been illustrated and described with respect to a particular embodiment thereof, it should be appreciated by those of ordinary skill in the art that various modifications to this invention may be made without departing from the spirit and scope of the present invention.