Abstract:
The invention relates to a fastening device ( 22 ) for a housing ( 21 ), more preferably lamp housing with at least two connection facility accommodations ( 27 ), wherein each of the connection facility accommodations for the accommodation of a spatially positioning fastening device is arranged on a swivel base ( 23, 24 ) arranged on the housing in a swiveling manner.

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS  
       [0001]     The present patent application claims priority from German Patent Application No. 10 2006 029 807.1, filed on Jun. 27, 2006.  
       BACKGROUND OF THE INVENTION  
       [0002]     The invention relates to a fastening device for a housing, more preferably lamp housing, with at least two connection facility accommodations, wherein each of the connection facility accommodations are arranged for the accommodation of a spatially positioning fastening device on a swivel base arranged on the housing in a swiveling manner.  
         [0003]     The technical area of the invention relates more preferably to the fastening of attachment parts to technical installations, such as for example lamps, which are used for lighting technical installations. More preferably, fastening devices of this type are used for fastening lamps in cabinets or to shelves which are formed of horizontal and vertical profiles or contain these. If profiles are used as fastening base for these housings the profiles are frequently designed as perforated grid profile with a defined hole spacing. Generally, the installation of these housings should take place as quickly and easily as possible and the fastening technique must be easily adaptable to the respective technical conditions.  
         [0004]     From the prior art a number of fastening techniques such as for instance screw connections, magnetic holding connections, plug or engagement connections are known in connection with fastening devices of this type. The known fastening devices make possible housing installation in merely one fastening plane, since the fastening device is fixed in its relative position to the housing.  
       SUMMARY OF THE INVENTION  
       [0005]     The object of the invention is to suggest a fastening device which permits fastening of the housing in different fastening planes or fastening configurations.  
         [0006]     This task is solved through a fastening device with the characteristics of claim  1 .  
         [0007]     The fastening device for a housing according to the invention has at least two connection facility accommodations, wherein each of the connection facility accommodations for accommodating a spatially positioning fastening device is arranged on a swivel base arranged on a housing capable of swiveling. The spatially positioning fastening device serves for the changing of the housing positioning in a fastening plane and the connection of the housing with a fastening base. Through the swivel base arranged in a swiveling manner on the housing the installation of the housing in spatially different fastening configurations is possible in connection with the suitable fastening facilities in each case.  
         [0008]     In an advantageous embodiment of the fastening device the fastening facilities can be designed as fastening straps with a fastening bore to establish a bolt connection with a fastening base. With fastening straps of this type, screw, engagement pin or rivet connections with a fastening base can be easily established.  
         [0009]     In a further advantageous embodiment the fastening facilities can be designed as fastening straps with a fastening projection for engagement in a fastening base. This enables the insertion or engagement of the fastening straps in through apertures of a fastening base and thus a positive fastening of the housing on the fastening base.  
         [0010]     To adapt a housing with a fastening device to a fastening base such as for example a perforated grid profile, the connection facility accommodations of the fastening device can have a guide accommodation for the longitudinally displaceable arrangement of the fastening strap to accommodate a fastening strap. This makes possible the alignment of axially spaced fastening straps to a given hole spacing for the screw connection with or for the engagement in a perforated grid profile.  
         [0011]     It is particularly advantageous if the guide accommodation is provided with a grid facility for the relative positioning of the fastening strap. Through the grid facility a fixed setting of two fastening straps arranged at an axial distance from each other to a given perforated grid spacing of a fastening base is possible. Likewise a fixed setting of a fastening projection to a given perforated grid spacing is possible.  
         [0012]     It proves to be particularly advantageous if the housing at each of its axial ends is provided with a swivel base for the swiveling of the fastening facilities into a fastening configuration axially protruding the outer housing dimensions. In this way the housing can be arranged with a fastening strap each formed on the swivel base between two perforated grid profiles arranged in parallel to each other such as for instance in a switching cabinet with 19 inch housing accommodations. The fastening straps can be swiveled such that each engages in a through aperture in the perforated grid profile and can be positively inserted through swiveling into an axial position alongside the housing in the through apertures of the perforated grid profiles. In this way the housing can be installed between two perforated grid profiles without additional tools and accessory parts.  
         [0013]     If the swivel base is provided with a grid facility for the relative positioning of the fastening facility it is possible through engaging the swivel base on the housing to achieve fixing of the fastening configuration e.g. of the housing between two perforated grid profiles. It further proves advantageous if the swivel base engages in three different positions on the housing. The swivel base for instance can be fixed in a keeping position, in an installation position and in an end position. This facilitates the insertion of the housing between two perforated grid profiles significantly.  
     
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0014]     In the following the invention is explained in more detail making reference to the enclosed drawing.  
         [0015]     It shows:  
         [0016]      FIG. 1 : a housing with a fastening device;  
         [0017]      FIG. 2 - 3 : a swivel base for the arrangement capable of swiveling to a housing with two fastening facilities;  
         [0018]      FIG. 4 - 5 : a housing in a first fastening configuration;  
         [0019]      FIG. 6 - 7 : a housing in a second fastening configuration;  
         [0020]      FIG. 8 - 10 : a housing in a third fastening configuration;  
     
    
     DETAILED DESCRIPTION OF THE INVENTION  
       [0021]     In  FIG. 1 a  lamp  20  with a fastening device  22  arranged on a housing  21  is shown. The fastening device  22  comprises a first swivel base  23  and a second swivel base  24  shown here only schematically. On both swivel bases  23  and  24 —as merely shown on the example of the swivel base  23  in  FIG. 1 —a fastening facility designed as fastening strap  26  is arranged which is accommodated in a connection facility accommodation  27 .  
         [0022]     The fastening straps are connected with the housing  21  through their arrangement on the swivel bases  23  and  24 . In the shown keeping position the fastening strap  26  of the fastening device  22  is not immediately utilizable for installation to a fastening base not shown here.  
         [0023]      FIG. 2  and  3  show the swivel base  23 , on which a swivel shaft  31  is formed, which can be inserted in recesses of the housing not shown here. On an outer largely ring-shaped circumferential body  32  of the swivel base  23 , engagement recesses  33 ,  34 ,  35  and  36  are formed on its lateral surfaces. The engagement recesses  33 ,  34 ,  35  and  36  engage in an engagement lug of a housing not shown here and thus enable fixing of the swivel base  23  relative to the housing  21  in a keeping position, installation position and end position without tools having to be used.  
         [0024]     Next to the first fastening strap  26  a second fastening strap  41  is formed on each of the swivel bases  23 ,  24  which has a fastening projection  42  for insertion into a through hole of a perforated grid profile not shown here. The fastening strap  26  additionally has fastening projections  44  and  45  and a through aperture  46 . The fastening projections  44  and  45  with a screw connection with a fastening base not shown here serve as support facility in order to arrange the fastening strap  26  in parallel with the surface of a fastening base. The fastening strap  26  is inserted in the guide accommodation  25  in a longitudinally displaceable manner and secured through guide webs  48 ,  49  in interaction with a stop  50  against falling out. Lateral surfaces  51 ,  52  of the guide accommodation  25  are provided with a plurality of engagement recesses  53  in which engagement lugs formed on the fastening strap  26  not shown here, engage. The fastening strap  26  can thus be fixed in a defined position relative to a housing.  
         [0025]      FIG. 4  shows a part of a fastening device  22  with the swivel base  23  shown in  FIG. 2  and  FIG. 3  which is accommodated in the housing  21  and the fastening strap  26  in the guide accommodation  25  in an outer position relative to the housing  21 .  
         [0026]     Viewing  FIG. 4  and  FIG. 5  together explains a first possibility of the fastening configuration of the housing  21  on a perforated grid profile  55 . On the perforated grid profile  55 , profile sections  56  are formed with a multiplicity of through aperture  57 . The housing  21  is arranged on the profile section  56  such that the through aperture  46  of the fastening strap  26  is aligned with one of the through apertures of the profile section  56 . The housing  21  in this way can be connected via the fastening strap  26  with the perforated grid profile  55  with a bolt, screw or engagement pin connection not shown in more detail here. In addition, the fastening strap  26  through the grid facility shown in  FIG. 3  can be adapted to different longitudinal distances of through apertures  57  in the profile section  56 .  
         [0027]     Viewing  FIG. 6  and  FIG. 7  together shows a further exemplary embodiment of a fastening configuration between the housing  21  and a perforated grid profile  58 . The perforated grid profile  58  is provided with a multiplicity of rectangular through apertures in which the fastening strap  26  can be inserted. The fastening strap  26  is angled in a bending region  60  from its flat extension into an installation position which engages in the through aperture  59 . The fastening projection  44  of the fastening strap  26  with an engagement lug  61  formed on said fastening strap engages under an edge  62  of the through aperture  59 . In this way the fastening strap  26  engages in the through aperture  59  by means of the engagement lug  61  and makes possible a positive connection of the housing  21  with the perforated grid profile  58 .  
         [0028]     Viewing  FIG. 8 ,  FIG. 9  and  FIG. 10  together shows a third exemplary embodiment of a fastening configuration of the housing  21  of the lamp  20  with a perforated grid profile  65 . A congruent perforated grid profile running parallel with the perforated grid profile  65  follows a housing end not shown here which is located opposite the housing end  66  of the housing  21 . The housing  21  is thus accommodated at right angles to the perforated grid profiles in the intermediate space between the perforated grid profiles.  
         [0029]      FIG. 8  shows the swivel base  23  inserted in the housing  21  with the fastening strap  41  on which the fastening projection  42  is formed. The fastening strap  41  in the representation shown in  FIG. 8  is in an outer end position  71 .  
         [0030]      FIG. 9  shows the fastening strap  41  in an installation position  72  prior to engagement in a rectangular through aperture  73  of the perforated grid profile  65 . An end position  71  of the housing  21  or the fastening strap  41  is achieved through inserting the fastening projection  42  in the through aperture  73  and through a movement of the housing  21  in the direction of the arrow  74 , as shown in  FIG. 10 . The swivel base  23  in this way engages in the housing  21  in the end position  71  through an engagement device not shown here. In addition, the fastening projection  42  on insertion in the through aperture  73  engages behind an edge  75  of the through aperture  73 , in this way bracing a lower side  76  of the fastening strap  41  with an upper side  77  of the fastening projection  42 , which upon simultaneous engagement of swivel bases  23 ,  24  respectively accommodated on the housing ends  66  of the housing  21 , results in a positive fastening of the housing  21  between the perforated grid profiles  65 .