Abstract:
The invention relates to a fastening device for attachment parts ( 20 ), more preferably lamps, with at least two connection facility accommodations ( 22, 23 ) arranged on a housing ( 21 ) of the attachment part for the accommodation of a first connection facility and at least a second connection facility, wherein the first connection facility is designed as adhesive connection facility ( 24 ) for forming a surface adhesion force and the second connection facility is designed as spatially positioning fastening device ( 27 ).

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS  
       [0001]     The present patent application claims priority from German Patent Application No. 10 2006 029 826.8, filed on Jun. 27, 2006.  
       BACKGROUND OF THE INVENTION  
       [0002]     The invention relates to a fastening device for the fastening of attachment parts, more preferably lamps, with at least two connection facility accommodations arranged on a housing of the attachment part for accommodating a first connection device and at least a second connection device, wherein the first connection device is designed as adhesive connection device for forming a surface adhesion force and the second connection device is designed as spatially positioning attachment device.  
         [0003]     The technical area of the invention more preferably relates to the fastening of attachment parts on technical devices, such as for example lamps, which are employed for the lighting of technical installations. More preferably lamps of this type are employed in switching cabinets, device cabinets or similar cabinets. These attachment parts designed as lamps regularly have a compact design and are fastened to horizontal and to vertical profiles or to cabinet walls. If profiles are used as fastening bases, these are frequently designed as perforated grid profile with defined hole spacing. As a rule, installation of these lamps should be performed preferably fast and easily, and the installation technique must be easily adaptable to the fastening requirements of the respective technical conditions.  
         [0004]     In connection with lamps designed as attachment parts a number of fastening techniques are known from the prior art such as for instance screw connections, magnetic holding connections, plug or engagement connections. Frequently, however, the fastening technique of such a lamp is matched to a certain application or comprises only one type of fasteners. Lamps are also known which have connection facilities in which different types of fasteners can be inserted. However, the different fasteners have to be supplementarily added to the lamp so that during the installation the appropriate fastener can be selected. In addition, the simultaneous use of two different fastening techniques is not possible, since only one fastener at a time can be inserted in the connection facility of the lamp.  
       SUMMARY OF THE INVENTION  
       [0005]     The object of the invention is to suggest a fastening device which has different fasteners that can be easily transferred to a fastening configuration without such fasteners having to be separately carried along and replaced. In addition, an installation aid which allows the alignment of the attachment part on a fastening base is to make possible simplified and rapid installation of the attachment part.  
         [0006]     This object is solved through a fastening device with the characteristics of claim  1 .  
         [0007]     The fastening device according to the invention is formed on a housing having at least two connection facility accommodations to accommodate a first connection facility and at least a second connection facility. According to the invention a first connection facility is designed as adhesive connection facility for forming a surface adhesion force which, on the one hand, serves for fixing the attachment part on a fastening base and on the other hand enables changing of the positioning of the attachment part in a fastening plane. The aforementioned connection facility is thus utilizable as installation aid for example to screw the attachment part to the fastening base without the attachment part having to be manually held tight on the fastening base during screwing. According to the invention, the second connection facility is additionally designed as spatially positioning fastening device. Thus, the attachment part can be permanently positioned in a defined three-dimensional position.  
         [0008]     In a particularly preferred embodiment of the attachment device, two connection facility accommodations can be formed on each axial end of the housing, wherein a connection facility each can be utilized as installation aid and a further connection facility each can be connected with a fastening base.  
         [0009]     In a further advantageous embodiment the spatially positioning fastening device of the attachment part can have two spatially positioning fasteners each. These two spatially positioning fasteners can serve for the connection of the attachment part to different fastening bases such as for instance a perforated grid profile. In addition, the attachment part can be installed in different spatial positions relative to the fastening base.  
         [0010]     The spatially positioning fastening device can also have fasteners which, as fastening straps, are designed with a fastening bore to establish a bolt connection with a fastening base. With fastening straps of this type, a screw, engagement pin or rivet connection can be easily established with a fastening base.  
         [0011]     It proves particularly advantageous if the fasteners are designed as fastening straps with a fastening projection for engagement in a fastening base. This makes possible insertion or engagement of the fastening straps in through-apertures of a fastening base and thus a positive fastening of the attachment part on the fastening base.  
         [0012]     For adapting the attachment part to a fastening base such as for instance a perforated grid profile the connection facility accommodations for accommodating a fastening strap can have a guide accommodation for longitudinally displaceable arrangement of the fastening strap. This makes possible the axial alignment of inter-spaced fastening straps with a given hole distance for screwing two or engagement in a perforated grid profile. An adhesive connection device, which has a form designed to agree with the guide accommodation, can also be inserted in the connection device accommodations.  
         [0013]     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, axially spaced from each other, to a given perforated grid spacing of a fastening base can take place. In the same way, fixed setting of a fastening projection to a given perforated grid distance can take place.  
         [0014]     In a particularly advantageous embodiment at least the connection facility accommodation for accommodating the fastening device can be arranged on a swiveling base arranged in a swiveling manner on the housing. Thus, fasteners of the fastening device can be swiveled into different positions. This makes possible more preferably a change of the fasteners through swiveling into a keeping, installation or end position without fasteners having to be replaced or separated from the housing. Thus the fastening device can be easily adapted to different fastening requirements.  
         [0015]     It proves particularly advantageous if the housing at its axial end is provided with at least a swiveling base each for the swiveling of the fasteners into a fastening configuration protruding over the outer housing dimensions. In this way the housing, with a fastening strap each formed on the swiveling base, can be arranged between two perforated profiles arranged in parallel to each other, as for example in a switching cabinet with 19-inch device accommodations. The fastening straps can be swiveled such that they engage in a through aperture in the perforated grid profile each and can be positively inserted in the through apertures of the perforated grid profiles through swiveling into an axial position alongside the housing. In this way the attachment part can be installed between two perforated grid profiles without additional tools.  
         [0016]     If the swivel base is provided with an engagement device for the relative positioning of the fasteners, fixing of the fastening configuration of the housing, for instance between two perforated grid profiles, can be achieved through engaging the swivel base in the housing. It further proves advantageous if the swivel base engages in three different positions in the housing. In this way the swivel base can be fixed in a keeping position, in an installation position and in an end position. This significantly facilitates the insertion of the housing between two perforated grid profiles.  
         [0017]     The adhesive connection facility of the fastening device according to the invention can be designed as a magnet. This makes possible the permanent fastening of the housing on a smooth surface such as for instance a steel plate wall of a switching cabinet. In addition, the adhesive connection facility designed as magnet can be utilized as installation aid for the moveable pre-assembly of the attachment part on a perforated grid profile for final screwing.  
         [0018]     In further advantageous embodiments of the fastening device the adhesive connection facility can also be designed as suction connection, such as for instance through a suction pump or as adhesive connection.  
     
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0019]     In the following the invention is explained in more detail with reference to the enclosed drawing.  
         [0020]     It shows:  
         [0021]      FIG. 1 : a lamp housing with two connection facility accommodations;  
         [0022]      FIG. 2 - 3 : a connection facility accommodation for the arrangement capable of swiveling on a lamp housing with two fasteners;  
         [0023]      FIG. 4 - 5 : a lamp housing in a first fastening configuration;  
         [0024]      FIG. 6 - 7 : a lamp housing in a second fastening configuration;  
         [0025]      FIG. 8 - 10 : a lamp housing in a third fastening configuration.  
     
    
     DETAILED DESCRIPTION OF THE INVENTION  
       [0026]      FIG. 1  shows an attachment part designed as lamp  20  with a part section of a housing  21 , a first connection facility accommodation  22  and a second connection facility accommoation  23 . Here, a connection facility designed as magnet  24  is inserted in the connection facility accommodation  22  and accommodated in a guide accommodation  25  in a longitudinally displaceable manner. The connection facility accommodation  23  is arranged on a swiveling base  26  connected in a swiveling manner with the housing  21  and designed as spatially positioning fastening device  27 . The fastening facility  27  has a first fastener  28  which is designed as fastening strap  29  and a second fastener  30  which is designed as fastening strap  31  with a fastening projection  32 . In the shown keeping position, the fasteners  28  and  30  of the connection facility accommodation  23  cannot be immediately utilized for installation to a fastening base not shown here. In contrast with this, the magnet  24  which is accommodated in the connection facility accommodation  22  can be used for fastening the lamp  20  to a fastening base.  
         [0027]      FIG. 2  and  3  show the swivel base  26  on which a swivel shaft  34  is formed which can be inserted in recesses of the housing  21  which is not shown here. On an outer largely ring-shaped circumferential body  35  of the swivel base  26 , engagement recesses  36 ,  37 ,  38  and  39  are formed on the lateral surfaces of said circumferential body. The engagement recesses  36 ,  37 ,  38  and  39  engage in an engagement lug of a housing not shown here and thus make possible fixing of the swivel base  26  relative to a lamp housing in a keeping position, installation position and end position without the use of tools. In addition, the swivel base  26  has the fastener  30  and the fastener  28 . The fastener  30  has the fastening strap  31  with the fastening projection  32  for insertion in a through-aperture of a perforated grid profile not shown here. The fastener  28  has the fastening strap  29  with a fastening projection  46 , a support web  47  and a through aperture  48 . The fastening strap  29  is inserted in a guide accommodation  49  in a longitudinally displaceable manner and secured through guide webs  50 ,  51  in interaction with a stop  52  to prevent falling out. Lateral surfaces  53 ,  54  of the guide accommodation  49  are provided with a plurality of engagement recesses  55  in which engagement lugs formed on the fastening strap  29  not shown here, engage. The fastening strap  29  can thus be fixed in a defined position relative to the housing  21 .  
         [0028]      FIG. 4  shows the swivel base  26  represented in  FIG. 3  with the fasteners  30  and  28  accommodated by the housing  21  in an outer position relative to the housing  21  and the magnet  24  inserted in the guide accommodation  25 .  
         [0029]     The viewing of  FIG. 4  and  FIG. 5  together explains a first possibility of the fastening configuration of the lamp  20  on a perforated grid profile  56 . Profile sections  57  with a multiplicity of through apertures  58  are formed on the perforated grid profile  56 . The lamp  20  is fixed on the profile section  57  via the magnet  24  such that the through aperture  48  of the fastening strap  29  is in alignment with one of the through apertures  58  of the profile section  57 . Thus, the housing  21  can be connected via the fastening strap  29  with a bolt, screw or engagement pin connection not shown in more detail here with the perforated grid profile. The adhesive connection with the profile section  57  formed by the magnet  24  can be utilized during the installation of the housing  21  for the congruent orientation of the through aperture  48  with one of the through apertures  58 . In addition, the fastening strap  29  can be adapted to different longitudinal spacings of through apertures  58  in the profile section  57  through the engagement device shown in  FIG. 3 .  
         [0030]     Viewing  FIG. 6  and  FIG. 7  together shows a further embodiment of a fastening configuration between the housing  21  of the lamp  20  and a perforated grid profile  59 . The perforated grid profile  59  is provided with a multiplicity of rectangular through apertures  60  in which the fastening strap  29  can be inserted. In a bending region  61  the fastening strap  29  is angled from its flat extension into an assembly position engaging in the through aperture  60 . The fastening projection  46  of the fastening strap  29  engages under an edge  63  of the through aperture  60  with an engagement lug  62  formed on said projection. The fastening strap  29  thus engages in the through aperture  60  by means of the engagement lug  62  and makes possible a positive connection of the lamp  20  with the perforated grid profile  59 . Supporting the fastening, an adhesive connection by a magnet which is not shown here can be formed.  
         [0031]     Viewing  FIG. 8, 9  and  10  together shows a third exemplary embodiment of a fastening configuration of the lamp  20  with the housing  21  and a perforated grid profile  66 . A congruent perforated grid profile running parallel with the perforated grid profile  66  is joined to a housing end not shown here which is located opposite a housing end  67  of the housing  21 . The lamp  20  is thus accommodated in the intermediate space between the perforated grid profiles at right angles to the perforated grid profiles.  
         [0032]      FIG. 8  shows the swivel base  26  inserted in the housing  21  with the fastening strap  31  of the fastener  30  on which the fastening projection  32  is formed. The fastener  30  in the representation shown in  FIG. 8  is in an outer end position  72 .  
         [0033]      FIG. 9  shows the fastening strap  31  in an installation position  73  before engagement in a rectangular through aperture  74  of the perforated grid profile  66 . An end position of the lamp  20  or the fastener  30  is achieved through insertion of the fastening projection  32  in the through aperture  74  and through a movement of the lamp  20  in the direction of the arrow  75  as shown in  FIG. 10 . The swivel base  26  thus engages in the end position through an engagement facility in the housing  21  not shown here. In addition, the fastening projection  32  upon insertion in the through aperture  74  engages behind an edge  76  of the through aperture  74  and in this way clamps a lower side  77  of the fastening strap  31  to an upper side  78  of the fastening projection  32  which, with simultaneous engagement of the respective swivel bases  26  accommodated on the housing ends  67  of the lamp  20 , leads to a positive fastening of the lamp  20  between the perforated grid profiles  66 .