Abstract:
A component kit for a switch cabinet, having a frame whose open sides can be clad with elements and at least one cabinet door. To be able to vary the installation space available in the switch cabinet, it is possible to fix different wall elements and/or cabinet doors to the faame, which have different depths extending perpendicular to the corresponding sides of the frame.

Description:
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     This invention relates to a kit for a switchgear cabinet with a rack, with open sides that can be covered by wall elements and at least one cabinet door. 
     2. Description of Related Art 
     A switchgear cabinet is known from German Patent Reference DE 44 39 622 C1, wherein the rack is assembled from twelve identical profiled frame three wall elements, a cover and a cabinet door. Threaded receivers are cut into the vertical profiled frame sections and the corner connectors for attaching the wall elements, with which the screw receptacles of the wall elements can be arranged flush. Fastening screws are passed through the screw receptacles and screwed into the threaded receivers. 
     The available installation space for housing electrical built-ins is fixed in such switchgear cabinets. Therefore later additions cause problems, if the switchgear cabinet is tightly packed. 
     SUMMARY OF THE INVENTION 
     It is one object of this invention to provide a kit for a switchgear cabinet of the type mentioned above, wherein additional installation space is made available in a simple manner. 
     This object is achieved with different wall elements and/or cabinet doors, which have different installation depths extending in a direction vertically relative to the respective sides of the rack, and can be selectively attached to the rack. 
     A kit in accordance with this invention makes it possible to vary the volume of the interior of the switchgear cabinet. During this, one or several sides of the rack can be selectively expanded as a function of the desired fittings. The available volume of the switchgear cabinet in particular can be changed in the direction of its width and depth. 
     In one preferred embodiment of this invention, at least one of the wall elements has a bulge facing away from the switchgear cabinet interior, which is designed as a cable receptacle and to which cables can be conducted via cable passages of the wall element The cable passages are cut into the wall element in the area assigned to the bottom and/or the top of the switchgear cabinet It is thus possible to conduct cables from the bottom or the top into the cable receptacle. The cables can be housed in an ordered manner and then can branch off to the desired locations in the interior of the switchgear cabinet. 
     In this case, the cable passages of the wall element can be closed by removable inserts or covers, so that they can be selectively made accessible when needed. 
     In order to perform a simple mounting of the wall elements, they can be suspended from a pivot bearing with a horizontal pivot axis. The wall elements can be pivoted into an upright mounting position, and in this mounting position the wall elements can be fixed in place on the rack by at least one fastening element. With this arrangement the attachment of the wall element can be performed by a single installer. Quick-action clamping devices are preferably used as fastening elements. 
     A kit in accordance with this invention is distinguished, for example, because the wall elements have a flat wall, which has angled-off sections on its vertical edges. The angled-off sections of the various wall elements have different lengths in the direction vertically relative to the associated side of the rack. It is possible to realize simply designed wall elements with this step, which can be produced with a small outlay in parts. 
     If the rack has four vertical profiled frame sections forming the sides of the rack, and the wall elements respectively rest with angled-off sections against the sides of two adjoining vertical profiled frame sections facing each other, then the wall elements can be easily inserted into the openings in the rack and can therein be fastened. 
     Similar to the wall elements, the cabinet doors can also have a flat door leaf which has a circumferential angled-off section on its edges. Here, the angled-off sections of different cabinet doors have different structural depths. 
     For example, one of the available cabinet doors can have an observation window in the door leaf. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     This invention will be explained in greater detail by an exemplary embodiment represented in the drawings wherein: 
     FIG. 1 is a rack of a switchgear cabinet, to which different wall elements can be selectively attached, in a perspective exploded view; 
     FIG. 2 is the rack shown in FIG. 1, together with two wall elements in a perspective exploded view; 
     FIG. 3 is the rack shown in FIGS. 1 and 2, in a partial perspective exploded view, with a built-on wall element; and 
     FIG. 4 is the rack shown in FIGS. 1 and 2, in a perspective exploded view, with three different cabinet doors. 
    
    
     DESCRIPTION OF PREFERRED EMBODIMENTS 
     A rack for a switchgear cabinet is shown in FIG. 1, which has a lower and an upper base unit  10 . The base unit  10  is made from a flat sheet steel blank and has a horizontally oriented bottom  11 , which has angled-off edges  12 ′ on its sides. The edges  12 ′ transition into angled-off sections  12 ″, which are oriented parallel with respect to the bottom  11 . Plug-in projections  15  are arranged in the corner areas of the bottom  11  and can be either screwed or welded to the base unit  10 . The plug-in projections  15  have a threaded receiver  16  which faces the interior of the switchgear cabinet. Vertical profiled frame sections  20  can be pushed on the plug-in projections  15 . In this case, the vertical profiled frame sections  20  are designed as hollow square profiled sections, whose interior cross section approximately corresponds to the exterior cross section of the plug-in projection  15 . When the vertical profiled frame sections  20  are pushed on the plug-in projections  15 , the screw receptacles  23  of the vertical profiled frame sections  20  are aligned with the threaded receivers  17  of the plug-in projections  15 . Fastening screws  21 ′ can be inserted into the screw receptacles  23  and screwed into the threaded receivers  16 . In this way, the vertical profiled frame sections  20  are fixedly connected with the base unit  10  to form the rack. The use of base units  10 ,  10 ′ of different widths is shown by a dashed representation in FIG.  1 . The vertical profiled frame sections  20  remain unchanged when using the different base units  10 ,  10 ′. 
     The open sides of the rack can be covered by means of wall elements  30 ,  40 , and by a door, not shown in the drawing. It is indicated in FIG. 1 that different wall elements  30 ,  40  can be selectively installed on the rack The wall element  30  can be used for example. The wall element  30  has a flat, vertically oriented wall  31 , which has angled-off sections  32 ,  34  on its edges. The angled-off sections  32 ,  34  point in the direction toward the interior of the rack. The two vertical angled-off sections  32  have slit-shaped hinge bolt receivers  33 . In this case the hinge bolt receivers  33  are cut, facing obliquely upward, into the angled-off sections  32 . They have an opened slit end, with which they can be pushed on the screw head of the fastening screw  21 ′. The screw head of the fastening screw  21 ′ is used as a hinge bolt  21 . The wall element  30  can be pushed on the hinge bolt  21  with its hinge bolt receivers  33 , so that pivoted seating with a horizontally oriented pivot axis is created. In the process, the wall element  30  can be maintained at an angle with respect to the associated side of the rack without slipping off the hinge bolt  21 . This is made possible by the obliquely cut-in hinge bolt receivers  33 . A fastening element  35 , embodied as a lock, fixes the wall element  30  in place. The wall element  30  strikes against the two upper fastening screws  21  in the tilted-in pivot position. For this purpose the angled-off sections  32  have notches  33 ′, which form the stops. The lock  35  can be rotated in the mounting position, so that a tongue-shaped locking element of the lock can engage a slit-shaped locking receiver  13  of the upper base unit  10 . 
     A wall element  40 , which has a bulge facing away from the interior of the rack, can also be built on the rack in place of the wall element  30 . The bulge is used as a cable conduit. Here, the bulge is formed by a lateral wall  41  and the angled-off sections  42  are connected therewith. In contrast to the angled-off sections  32 ,  34  of the wall element  30 , the angled-off sections  42  of the wall element  40  have a greater structural depth The wall element  40  is open in the upper portion facing the base unit and can be closed by a cover  44 . The cover  44  has an upper sheet metal cover plate  46 , which is adjoined by downward-oriented lateral elements  45 . The lateral elements  45  extend over the angled-off sections  42 , so that the sheet metal cover plate  46  strikes with its underside against the angled-off sections  42 . The angled-off sections  42  are beveled in this area, so that the sheet metal cover plate  46  is also arranged at an angle with respect to the horizontal line. This allows an improved water run-off. Two wall elements  40  are shown in FIG. 1, which can be selectively installed on the rack. These two wall elements  40  have different structural depths. It is thus possible to make manipulation areas of different size for cables available, depending on the needs of the user. The attachment of the wall  40  takes place in the same way as the fastening of the wall element  30 . Initially they are placed with hinge bolt receivers  33  on the hinge bolts  21 . Thereafter, the wall elements  40  can be moved into the upright position and fixed in place on the rack by means of fastening elements. The angled-off sections  42  have notches  33 ′ which are used as stops. If the switchgear cabinet is placed into an interior which is protected against moisture, the cover  44  can be removed. Cables can be inserted into the cable conduit of the wall  40  via the cover  44 . The introduced cables can then branch off into the interior of the switchgear cabinet The cables can also be introduced through an opening  14  enclosed by the base units  10 ,  10 ′. The opening  14  can be closed off by cover plates fastened on fastening receivers  12  arranged around the opening  14 . Cable passages can also be screwed to the fastening receivers  12 . 
     The use of two walls  40 , which enclose a cable conduit, is shown in FIG.  2 . As shown, cable clamps  50  can be fastened on the vertical profiled frame sections  20 . The cable clamps  50  have two legs  52 , which are parallel with each other and can be screwed on the inside to the vertical profiled frame sections  20 . The two legs  52  project into the cable space enclosed by the wall element  40  and have a holding section  55 . A plurality of tongues  51  are cut free from the holding section  55 . Cables  54  can be fastened on the tongues  51  by means of cable binders  53 . As shown in FIG. 2, the angled-off sections  42  of the wall element  40  have notches  49  in their upper areas. The respective angled-off section  42  extends around the upper base unit  10  with the notches  49 , so that the sheet metal cover plate  46  of the cover  44  can make a flush transition into the top of the base unit  10 . Adjoining the notches  49 , support sections  48 , on which the cover  44  rests, are angled off from the angled-off sections  42 . When the cover  44  is put down, the lateral elements  45  extend over the angled-off sections  42 . An edge  47 , which is bent off the sheet metal cover plate  46 , extends over the wall  41 . 
     In order to lead cables out of the floor into the cable conduit enclosed by the wall element  40 , inserts  40 . 2  are used with the wall elements  40 . Such an insert  40 . 2  has a horizontal cover plate  40 . 4 , from which a handle  40 . 5  is bent off in one piece. The cover plate  40 . 4  can be pushed through an opening of the wall  42 . Guides  40 . 3  are angled off the angled-off sections  42 . The cover plate  40 . 4  can slide on the guides  40 . 3 . The insertion movement of the insert  40 . 2  into the wall element  40  is limited by the handle  40 . 5  which strikes against the wall  41 . With the insert  40 . 2  pulled out, a cable passage  40 . 1  is opened, through which the cables  54  can be introduced into tie cable conduit of the wall element  40 . 
     The action for fastening a wall element  40  on the rack is shown in greater detail in FIG.  3 . The wall element  40  can be placed with its slit-shaped hinge bolt receivers  33  on the hinge bolts  21  and thereafter be brought into the vertical mounting position. Final fastening of the wall element  40  takes place by means of two fastening elements  35 . The fastening elements  35  have locking hooks, which can be pivoted around an axis of rotation extending vertically with respect to the angled-off sections  42 . A handle is connected with the locking hooks. 
     Once the wall element  40  is brought into its mounting position, the locking hook can be pivoted by means of the handle. 
     The locking hook then extends behind the fastening screw  21 ′ received in the notch  33 ′ and clamps it. To prevent unauthorized access, the fastening element  35  can only be actuated from the interior of the switchgear cabinet. 
     Fastening elements  35  are attached to both angled-off sections  42  of the wall element  40  for assured fixation. 
     The use of three different cabinet doors is shown in FIG.  4 . 
     The cabinet doors  60  have a flat door leaf  61 , which has a circumferential angled-off section  62  on its edges. The angled-off section  62  can have different extensions in the direction vertically with respect to the door leaf  61 . 
     With a cabinet door  60  an observation window  63  can be cut in the door leaf  61  in order to monitor functions in the interior of the switchgear from the outside of the switch gear cabinet.