Abstract:
A mounting system ( 1 ) arranges electric devices ( 2 ), in switchgear cabinets. The mounting system ( 1 ) includes horizontal mounting strip ( 3 ) to which a device ( 2 ) can be secured. At one of its longitudinal edges, the mounting strip ( 3 ) includes a receiving device ( 20 ) extending along the longitudinal axis of the mounting strip and receiving components ( 7, 8, 9, 10, 11 ). The receiving device ( 20 ) has locks ( 22, 23 ) to be interlocked with an associated lock ( 26 ) of the component ( 7, 8, 9, 10, 11 ) inserted into the receiving device ( 20 ). Depending on the design of the associated lock ( 26 ) of the component ( 7, 8, 9, 10, 11 ), the interlocking action can be cancelled exclusively by a pulling force acting on the additional component ( 7, 8, 9, 10, 11 ) or cannot be so cancelled but is self-locking.

Description:
FIELD OF THE INVENTION 
     The invention relates to a mounting system for the arrangement of electrical devices, for example, in switchgear cabinets. 
     BACKGROUND OF THE INVENTION 
     In the field of industrial control technology, electrical devices are frequently disposed in switchgear cabinets or switch boxes. The individual devices are disposed on mounting rails, for example, such as a top-hat rail, and may be connected with one another in series. The devices are subsequently hard-wired. A comb-shaped orderer is mounted on the mounting strip exhibiting the mounting rail to order the connecting wires of the devices. An associated mounting system is offered by the applicant, Friedrich Lutze GmbH in 71384 Weinstadt, and is disclosed, for example, in DE 297 16 229 U1 or also DE 20 2008 015 309 U1. 
     DE 198 59 606 A1 discloses a quick-assembly wiring system comprising a supporting structure for attaching the devices and device islands having top hat rail-shaped mounting rails that can be attached to the supporting structure. 
     SUMMARY OF THE INVENTION 
     The object of the present invention is to provide a mounting system that has improved performance characteristics, in particular such that it is versatile in its use and is easy to use and to install. In one embodiment, the mounting system is intended to increase the operational reliability of the devices attached thereto and to further increase the flexibility in ordering the connecting wires of the devices. 
     This object is basically achieved by a mounting system having at least one preferably horizontal mounting strip, on which at least one device can be mounted. The mounting strip has a receiving device on or near at least one longitudinal edge of the mounting strip, which receiving device extends along the longitudinal axis of the mounting strip, and into which the additional components of the mounting system can be inserted, for example, orderers for ordering the connecting wires of the device that is to be mounted on the mounting strip, in particular, cable combs. 
     The receiving device has at least one lock that is to be interlocked with a corresponding lock of the additional component of the mounting system that can be inserted into the receiving device. Depending on the design of the corresponding lock of the additional component, the interlocking action can be cancelled exclusively by a pulling force applied to the additional component, or cannot be canceled but rather, is self-locking. 
     Advantageously, this interlocking is determined solely by the design of the corresponding lock of the additional component. By using the same mounting strip, the additional component alone can determine whether the interlocking action can be cancelled exclusively by a pulling force, or whether this cancellation is not possible, in particular, whether this cancellation can be achieved without tools, or whether it is only possible through the use of a tool. In this way, for example, a first additional component can be mounted at a critical location, for example an edge protector for electrical lines, at those locations at which electrical lines with hazardous operating voltages are guided. On the other hand, at non-critical locations, an interlocking action can be used to install additional components on the receiving device such that that the interlocking action can be canceled, for example segments of a cable comb. 
     In the case of the mounting system, one or a plurality of mounting strips, in particular mounting strips that extend parallel to one another, may be affixed on a support device. For example, the support device may comprise profile bars that extend at a right angle to the mounting strips and are preferably vertical. The profile bars, together with the mounting strips, form a mounting frame, which can be pre-assembled and subsequently installed, for example, in a switchgear cabinet. 
     In one embodiment, the lock of the receiving device is formed by a locking flank that extends in the longitudinal direction of the mounting strip, and that is integrally formed as a component of the mounting strip. The mounting strip may be formed by a profile bar that has been cut to length and can be manufactured out of aluminum or an alloy that contains aluminum. In this way, a mechanically stable locking flank can be formed, having a high degree of freedom of design. 
     In one embodiment, the locking flank is disposed on the exterior of the receiving device facing away from the front side of the mounting strip on which the device can be mounted. The locking flank is not accessible thereby from the front side or in any event, is not easily accessible, which is advantageous to reliably prevent an unintentional release of the locking connection when working on the mounting system. 
     The self-locking locking mechanism may be provided for additional components that are subjected to a heavy mechanical load, for example for cable combs for large connecting wires. Accordingly, these additional components may not be self-locking but rather, if applicable may be also be released without tools, for example, cable combs for connecting wires having a small diameter. 
     In one embodiment, the receiving device comprises a groove that extends in the longitudinal direction of the mounting strip, and that is positioned at a right angle to the longitudinal axis in the longitudinal edge of the mounting strip. A strip-shaped connecting section of the additional component of the mounting system that is preferably cylindrical in the longitudinal direction thereof can be inserted into the groove. The groove may have a surface texture on the inner surface thereof, in particular channels that extend in the longitudinal direction thereof, to prevent an unintended clamping and thereby to ensure a simple actuation. 
     In one embodiment, the lock of the receiving device is formed on the outside of a wall that is adjacent to the groove. In this way, the additional component can form a locking flank surrounding the groove with reduced material usage, and therefore, reduced dimensions. The lock is integrally formed on the strip-shaped connecting section of the additional components. 
     In one embodiment, the mounting system has components of the first kind, which have a corresponding lock having a locking flank of the first kind. Together with the direction of the pulling force, this locking flank forms an angle that is greater than 90°. As a result, the interlocking action can be canceled exclusively by a pulling force. The direction of the pulling force is thereby parallel to the direction in which the additional component is inserted into the groove of the receiving device. 
     In one embodiment, the mounting system has components of the second kind, which have a corresponding lock having a locking flank of the second kind. Together with the direction of the pulling force, this locking flank forms an angle that is less than 90°. As a result, the interlocking action cannot be canceled exclusively by a pulling force, but rather, the locking force is self-locking. When pulling, there is positive locking of the corresponding locks of the receiving device and the additional components of the second kind so that in any event, a non-destructive release of the additional component of the second kind is not possible without additional measures. 
     In one embodiment, the receiving device has both a first lock for the interaction with a corresponding lock of an additional component of the first kind of the mounting system, that can be released exclusively by a pulling force, as well as a second lock for the interaction with a corresponding lock of an additional component of the second kind of the mounting system. These locks cannot be canceled exclusively by a pulling force, but rather, is self-locking. The first lock preferably has a smaller spacing from the opening of the receiving device into which the additional components are inserted than does the second locking means. 
     In one embodiment, the mounting system has an edge protector element as an additional component. With the edge protector, the receiving device, and therefore, the free end of the mounting strip can be covered. Thus, damage to a connection line at the end of the mounting strip can be prevented. Preferably, at least a section of the edge protector element has a convex surface. The curvature preferably extends over an angular range greater than 90°, in particular greater than 135° and preferably approximately 180°. 
     The devices may be electrical devices, for example power supplies, fuses, control units, input/output components, interface units, temperature converters, analog/digital transducers or the like. Alternatively or in addition, the device may also have non-electrical components, for example, optical components or pneumatic components. 
     Further advantages, features and details of the multiple exemplary embodiments described in detail with reference to the drawings may be essential to the invention, alone or in any combination thereof. 
     Other objects, advantages and salient features of the present invention will become apparent from the following detailed description, which, taken in conjunction with the annexed drawings, discloses preferred embodiments of the present invention. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       Referring to the drawings that form a part of this disclosure: 
         FIG. 1  is a perspective view of a mounting system according to an exemplary embodiment of the invention; 
         FIG. 2  is an enlarged, partial perspective view of the mounting strip of  FIG. 1 ; 
         FIG. 3  is a front view of an ordering assembly according to an exemplary embodiment of the invention; 
         FIG. 4  is a perspective view of a mounting strip having an inserted ordering assembly; 
         FIG. 5  is a perspective view of the mounting strip from  FIG. 4  having a replaced ordering segment; 
         FIG. 6  is a front view of an additional ordering segment; 
         FIG. 7  is a side view in section through a mounting strip having the ordering segment from  FIG. 6  fastened thereon; 
         FIG. 8  is an enlarged partial side view in section of a portion of the mounting strip and ordering section of  FIG. 7 ; 
         FIG. 9  is a side view of another ordering segment; 
         FIG. 10  is a side view in section through a mounting strip having the ordering segment of  FIG. 9  fastened thereon; 
         FIG. 11  is an enlarged, partial side view in section of a portion of the mounting strip and ordering section of  FIG. 10 ; 
         FIG. 12  is a front view of an additional component for the mounting system; 
         FIG. 13  is a side view in section through a mounting strip having the additional component of  FIG. 12  fastened thereon; 
         FIG. 14  is an enlarged, partial side view in section of a portion of the mounting strip and additional component of  FIG. 13 ; 
         FIG. 15  is a side view of a mounting strip according to the prior art; 
         FIG. 16  is a side view of a switchboard according to the prior art; 
         FIG. 17  is a side view of a mounting strip according to an exemplary embodiment of the invention during the attachment of a device; 
         FIG. 18  is a side view of a mounting strip according to an exemplary embodiment of the invention having a device secured thereto; 
         FIG. 19  is a perspective view of a mounting strip according to another exemplary embodiment of the invention; 
         FIG. 20  is a side view of the mounting strip of  FIG. 19 ; 
         FIG. 21  is an enlarged, partial side view of a portion of the mounting strip of  FIG. 20 ; 
         FIG. 22  is a perspective view of one end of the mounting strip of  FIG. 1 ; 
         FIG. 23  is a side view of the mounting strip of  FIG. 22 ; 
         FIG. 24  is an enlarged, partial side view in section of a portion of the mounting strip of  FIG. 23 ; 
         FIG. 25  is a perspective view of the back side of the mounting system of  FIG. 1 ; 
         FIG. 26  is a side view of a mounting strip of  FIG. 25 ; 
         FIG. 27  is a side view of a mounting strip of  FIG. 1  having an adapter element that has been snapped onto the latching strips; 
         FIG. 28  is a perspective view of the back side of the mounting strip of  FIG. 1  having two snapped-on adapter elements; 
         FIG. 29  is a side view of a second additional component of the mounting system according to an exemplary embodiment of the invention; 
         FIG. 30  is a side view of the mounting strip having a cable duct fastened on the back side by adapter elements according to an exemplary embodiment of the invention; 
         FIG. 31  is a perspective view of a mounting system according to a further exemplary embodiment of the invention; 
         FIG. 32  is a side view of a mounting strip according to another exemplary embodiment of the invention without a support rail; and 
         FIG. 33  is a side view of an asymmetrical mounting strip according to yet another exemplary embodiment of the invention. 
     
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
       FIG. 1  shows a perspective view of an exemplary embodiment of a mounting system  1  comprising a total of four horizontal mounting strips  3 ,  103 , to each of which at least one device  2  ( FIG. 17 ) can be secured. The two lower mounting strips  103  have a lesser lateral extension compared to the two upper mounting strips  3 . The mounting strips  3 ,  103  are each connected to a vertical profiled rod  4  at or close to the two ends of the mounting strips, for example up to 200 mm and, in particular, up to 125 mm from the two ends of the mounting strips. A mounting bracket  5  or any other type of connecting element  79  ( FIG. 31 ) connects the mounting strip ends, in each case, to a vertical profiled rod  4 . The mounting strips, together with the profiled rods  4 , form a mounting frame, which mounting frame can be pre-assembled and subsequently inserted into an electrical enclosure in the state illustrated in  FIG. 1 , or with devices  2  and the connecting wires  34 ,  35  ( FIG. 5 ) thereof already secured thereto. The mounting strips  3 ,  103  each comprise a support rail  6 , to which the devices  2  are to be secured. In the exemplary embodiment, the support rail is a top-hat rail that is standardized or substantially corresponds to a standard and has a height of 7.5 mm. 
     An ordering assembly  8  is secured to each of the longitudinal edges of the upper mounting strip  3  in  FIG. 1 . The ordering assembly is composed of a plurality of identically designed ordering segments  7 . One or more ordering segments  7  can be selectively detached from the ordering assembly  8  and be removed from the ordering assembly  8  or the mounting strip  3  to leave a gap therein, or be replaced by another ordering segment  9  ( FIG. 2 ),  11 , ( FIG. 3 ), or a group of other ordering segments  9 ,  11 . 
       FIG. 2  shows an enlarged representation of a mounting strip  3 .  FIG. 3  shows an ordering assembly  108  composed of a plurality of ordering segments  11 . Each ordering segment is formed as one piece. The ordering segments are disposed one behind the other. Instead of the one-piece design, the ordering segments  11  can also include interlinking parts  7   a ,  7   b  ( FIG. 6 ) at the ends thereof, by which the ordering segments  11  can be detachably interlinked. The ordering assembly  108  can be produced in specifiable lengths of approximately 1 m or 2 m, for example, or in a continuous form. 
     Each ordering segment  11  comprises a peg-shaped fastening section  12  that can be inserted into a receiving device  20  disposed on the longitudinal edges of the mounting strip  3 , and comprises a groove  13  ( FIG. 7 ). A groove  14  extending in the insertion direction is formed in the fastening section  12  in the center relative to the longitudinal extension. One end that groove  14  forms a tool engagement surface and remains accessible in the inserted state and into which a tool  33  ( FIG. 4 ) can be inserted for detaching the ordering segment  11 . 
     The ordering segment  11 , designed as one piece with the fastening section  12 , preferably comprises elastically deflectable ordering elements  15 . Between the ordering elements connecting wires  34 ,  35  of the device  2  can be inserted and thereby fixed in an ordered manner. Predetermined separation points  16 , at which the ordering segments  11  can be separated, are formed by indentations in the fastening section  12 . The indentations extend past a stop edge  17  formed by the ordering segment  11 . Up to the stop edge, the ordering segment  11  can be inserted into the groove  13 . As a result, the position of the predetermined separation point  16  is also visible in the inserted state. A separating cut can take place from the direction of the ordering elements  15 . 
     The ordering segment  9  comprises two receiving channels  18 , each of which extends across half the length of the ordering segment  9 , for the connecting wires  34 ,  35  to be ordered. Two legs  19  of the ordering segment  9 , which legs are disposed opposite the mounting strip  3  or the fastening section  12 , can be elastically deflected so that the connecting wires  34 ,  35  to be ordered can be inserted into the receiving channel  18 . In contrast, the ordering segment  7  comprises a plurality of ordering elements  115 , specifically five thereof in the exemplary embodiment, each of which has an elastically deformable hook section for closing the receiving channel  118 . Additional ordering segments can also include differently designed receiving channels  18 ,  118 , in particular differently sized receiving channels  18 ,  118 , for example one or more larger receiving channels  18  in a manner identical or similar to the ordering segment  9 , and one or more smaller receiving channels  118  in a manner identical or similar to the ordering segment  7 . In one embodiment, the longitudinal extension of the individual receiving channels  18 ,  118  is at least 5%, in particular at least 8%, and preferably at least 10% of the entire longitudinal extension of the ordering segment  7 ,  9 . The additional component  10  of the mounting system  1  is an edge protection element. The ordering segments  7 ,  9 , as well as the additional component  10 , have an equal length of 50 mm in the exemplary embodiment. 
       FIG. 4  shows a perspective view of a mounting strip  103  having an ordering assembly  108 , which is formed by a succession of ordering segments  11  and which is inserted into the groove  13 . One ordering segment  11  was separated by two incisions at the predetermined separation points  16 . By inserting a tool  33 , for example the blade of a flat-blade screwdriver, the separated ordering segment  11  can be detached and removed from the mounting strip  103 . 
       FIG. 5  shows a perspective view of the mounting strip  103  from  FIG. 4 , wherein, instead of the ordering segment  11  that was detached in  FIG. 4 , an ordering segment  9  having two large receiving channels  18  is inserted. A bundle of connecting wires  34  or a connecting wire  35  having a large cross-section is inserted into the receiving channels. 
     In order to improve the fixation of the connecting wires  34 ,  35 , the ordering segment  9  has a holding section  36 , which protrudes transversely to the longitudinal direction, in particular, protruding on the front side of the mounting strip  103  with the support rail  6 . The ordering segment  9  includes one holding section  36  for each receiving channel  18 . The holding section  36  is T-shaped on the free end thereof for the improved fixation of a holder  37  that can be a cable tie. 
       FIGS. 6, 9, and 12  are depictions of the ordering segments  7 ,  9  and the additional component  10 . The ordering segment  9  and the additional component  10  can be non-detachably fixed to the mounting strip  3 , which is why these components  9 ,  10  do not have a tool engagement surface  14 . 
       FIG. 7  shows a section through a mounting strip  103  having an ordering segment  7  secured thereto.  FIG. 8  shows, in an enlarged view, a cutout of  FIG. 7  in the region of the connection of the ordering segment  7  to the mounting strip  103 . The receiving device  20  extends along the longitudinal axis of the mounting strip  103  and is integrally formed with the mounting strip  103 . The ordering segment  7  can be inserted into the receiving device that comprises the groove  13 . The side walls of groove  13  have a plurality of additional grooves  21  or flutings extending in the longitudinal direction of the mounting strip  103 , as well as two latching flanks  22 ,  23  on the outer side of the receiving device  20 . The latching flanks  22 ,  23  extend in the longitudinal direction of the mounting strip  103  and are integrally formed therewith. In particular, the latching flanks  22 ,  23  are formed on an outer side of a wall  24 , which borders the groove  13 . This wall is offset in the lateral direction relative to the opposing wall  25 , which also borders the groove  13 . The wall  24  has a surface on the outer side extending diagonally relative to the insertion direction of the ordering segment  7  and, in particular, diagonally relative to the groove  13 . Due to the diagonal position, the latch  26  can deflect when the ordering segment  7  is inserted with a low insertion force. 
     The ordering segment  7 , which is a component of the first type of the mounting system  1 , comprises an associated latch  26  formed by a leg. In the non-deformed initial state, the leg extends virtually parallel to the fastening section  12 , but can be elastically deflected relative thereto. A latching flank  27  of the first type is formed close to the free end of the leg. The latching flank, together with the direction  28  of the pulsing force, encloses an angle  29  of more than 90°. As a result, the interlocking can be released solely with pulling force. To simplify handling, the release force can be applied by a flat-head screwdriver  33 , which can be inserted into the tool engagement surface  14 . 
       FIG. 10  shows a section through a mounting strip  103  having an ordering segment  9  secured thereto.  FIG. 11  shows and enlarged representation of a portion of  FIG. 10  in the region of the connection of the ordering segment  9  to the mounting strip  103 . The ordering element  9  is a component of the second type of the mounting system  1  having an associated latch  126  having a latching flank  30  of the second type. Latching flank  30 , together with the direction  28  of the pulling force, encloses an angle of less than 90°. As a result, the interlocking cannot be released solely with pulling force, but rather is self-locking. The ordering element  9  is therefore very securely fastened on the mounting strip  3 , as necessary for the large receiving channels  18  for accommodating large and heavy connecting wires  34 ,  35 . 
       FIG. 13  shows a section through a mounting strip  103  having an additional component  10  secured thereto.  FIG. 14  shows an enlarged view of a portion of  FIG. 13 , in the region of the connection of the additional component  10  to the mounting strip  103 . The additional component  10  is an edge protection element having a convex, non-circular surface  32  extending across an angular range of 180° on the surface thereof facing away from the mounting strip  103 . The additional component  10  can be produced, for example, as an extrusion part made of a plastic and can be trimmed individually to the desired length. The additional component  10  does not have a tool engagement surface  14 . Although possible, in principle, to release the interlocking by a pulling force in the direction  28 , this release cannot be carried out manually or requires a large force due to the material that is used and the structural design. This structure is intended to prevent the additional component  10  from being inadvertently detached from the mounting strip  103 . 
     In one embodiment, for each ordering segment  7 ,  11  or component in which the tool engagement surface  14  is visible when the ordering segment or component is in the state of being secured to the mounting strip  3 ,  103 , the interlocking is not self-locking. The segment or component rather can be released solely with pulling force. In particular, each ordering segment  7 ,  11  comprises a latching means  26  having a latching flank  27  of the first type, by which the interlocking can be released solely with pulling force. 
       FIGS. 15 and 16  respectively show a side view of a mounting strip  203  according to the prior art and a switchboard  303  according to the prior art, each of which has a support rail  6  having a height of, for example, 7.5 mm. Due to the relatively low height of the support rail  6 , devices  2  having a relatively large installation height cannot be secured. At most devices  102  that have a reduced installation height on at least one side can be secured. To solve the problem of being able to secure large devices  2  also in the case of support rails  6  having a relatively low installation height, a mounting strip  3 , which is preferably designed to be symmetrical with respect to a center plane  40 , has a first preferably middle or center section  41 . In middle section  41 , the support rail  6  is also formed. A third or end section  43  is spaced apart from the support rail  6  and is at a greater lateral or transverse horizontal distance  44  from the bottom or attachment point  39  of the support rail  6  than a second or intermediate section  42 . Second section  42  is disposed between the first section  41  and the third section  43 , at the end of the middle section that is close to the support rail  6 , in particular at the end thereof adjoining the support rail  6 . 
     In the exemplary embodiment of  FIGS. 17 and 18 , this attachment of device  2  is achieved by a convex curvature of the mounting strip  3 , in particular, in the second section  42  thereof. The convex curvature extends across an angular range of approximately 15°. The radius of the convex curvature is approximately four times the lateral extension of the curved second section  42 . The distance  44  between an end of the second section  42  that faces the third section  43  and an end of the second section  42  that faces the first section  41  corresponds approximately to the width or lateral extension  45  of the support rail  6 . The overall width or extension  46  for securing the device  2  to the support rail  6  is then approximately twice the width or lateral extension  45  of the support rail  6 . As shown in  FIGS. 17 and 18 , devices  2  having a large design can be easily secured to the mounting strip  3  despite the relatively low height  45  of the support rail  6 . 
       FIG. 19  shows a perspective view of a mounting strip  403 .  FIG. 20  shows a side view of the mounting strip  403  of  FIG. 19 .  FIG. 21  shows an enlarged representation of a portion of  FIG. 20  in the region of a groove  47 , which is integrally formed with the mounting strip  403 , for the releasably snap-in insertion of identification labels  48 . The groove  47  has an undercut  49  on both sides, into each of which an elastically deflectable leg  50  of the identification label  48  engages in a latching manner. The groove  47  is disposed in the region of the third section  43  of the mounting strip  403  or in an end of the second section  42  of the mounting strip  403  that is remote from the first section  41 . The identification label  48  can then be read even when a device  2  is secured to the mounting strip  403 . The identification label  48  can identify, for example, a connecting wire  35 ,  36  that is routed adjacent to the identification label  48  from the back side to the front side of the mounting strip  403 , or a device  2  that is disposed on the support rail in the region of the identification label  48 . 
     Ordering assembly  8  or other components  10  of the mounting system  1  can be inserted into the receiving device  120 . In particular, they can be inserted into the engagement groove  113 . At least one of the walls that delimits the engagement groove  113  has one or more recesses  51  or flutings that preferably extend in the longitudinal direction of the engagement groove  113 , for example for the non-detachable interlocking of a component of the mounting system  1  that can be inserted into the receiving device  120  or plugged into the engagement groove  113 . On the outer side, the receiving device  120  also has a first latching flank  22  and a second latching flank  23 . The first, non-locking latching flank  22  is situated at a shorter distance from the free end of the receiving device  120  than the locking, second latching flank  23 . 
       FIG. 22  shows a perspective view of one end of the mounting strip  3  with the connection to the mounting bracket  5 .  FIG. 23  shows a side view of the mounting strip  3  of  FIG. 22 .  FIG. 24  shows an enlarged representation of a portion of  FIG. 23  in the region of the connection between the mounting strip  3  and the mounting bracket  5 . The mounting strip  3  has a groove  54  between the two support legs  52 ,  53  of the support rail  6 . The groove extends in the longitudinal direction of the mounting strip  3  and preferably in the center, and accommodates the head of a flat-head screw, in particular. Thus, in a state in which the mounting strip  3  is connected to the mounting bracket  5 , the head  55  does not protrude into the region between the two support legs  52 ,  53 , and therefore, does not obstruct the securing of the device  2 . 
     In the exemplary embodiment, the mounting strip  3  comprises a slide-nut channel  57  between the two support legs  52 ,  53 . The slide-nut channel extends in the longitudinal direction of the mounting strip  3 . The groove  54  is formed in the base  58  of the slide-nut channel  57 . The head  55  of the connector  56 , in the connected state, does not protrude past the base  58  of the slide-nut channel  57  or into the slide-nut channel  57 . As a result, even when the connector  56  is installed, one or more slide nuts can be inserted into the slide-nut channel  57 , in particular, also into a section of the slide-nut channel  57  that is delimited on both sides by connector  56 . 
     The width  59  of the groove  54  is less than 50% greater than the width of the head  55  of the connector  56 , in particular less than 25% and preferably less than 10%. The depth  60  of the groove  54  is less than 50% greater than the height of the head  55  of the connector  56 , in particular less than 25%, and preferably less than 10%. The width  59  of the groove  54  is less than 90% of the width of the slide-nut channel  57 , in particular less than 80% and, in the exemplary embodiment, is approximately 75%. The width  59  of the groove  54  corresponds approximately to the width of the opening of the slide-nut channel  57  that faces the support legs  52 ,  53 . The depth  60  of the groove  54  is less than 150% of the depth of the slide-nut channel  57 , in particular, less than 100% and, preferably, less than 50%. 
     In the exemplary embodiment, the connector  56  is a flat-head screw, which is inserted into a passage opening  61  in the mounting strip  3 , and is screwed into a threaded bore of the mounting bracket  5 . The passage opening  61  can be optionally formed at a point in the mounting strip  3  that is suitable for connecting the mounting strip  3  to the mounting bracket  5 . To this end, the mounting strip  3  has a slot  62 , which functions as a centering aid, is formed in the middle of the base of the groove  54 , extends in the longitudinal direction of the mounting strip  3 , and is preferably V-shaped. 
       FIG. 25  shows a perspective view of the back side of the mounting system  1  from  FIG. 1 . The mounting strip  3  comprises, on the back side thereof disposed opposite the support rail  6 , at least one latching strip  63  extending in the longitudinal direction of the mounting strip  3 . Additional components  64 ,  65  of the mounting system  1  can be latched onto the latching strip directly or be indirectly fastened thereon by an adapter element  66  that can be latched thereto ( FIG. 27 ). 
       FIG. 26  shows a side view of the mounting strip  3  of  FIG. 25 . The mounting strip  3  comprises, on the back side and in the middle region thereof, two latching strips  63  extending parallel to one another. The free ends of latching strips  63  overhang relative to a connecting strip  67  and thereby delimit a groove  68  or a receiving channel, into which, for example, either the mounting bracket  5  can be inserted or a connecting element can engage, for example, a connecting element for connecting an additional component  64  to the adapter element  66 . The latching strips  63  are integrally formed with the mounting strip  3 . 
     The latching strips  63  comprise a self-locking latching edge  80  ( FIG. 32 ), in particular a latching edge  80  having an undercut  81 . The two latching strips  63  extend so as to be spaced apart from one another, but parallel to one another in the region of the support rails  6 , which rails are disposed on the front side. A first additional component  65  is snapped onto the latching strips  63  for bundling connecting wires  34 ,  35  of the device  2  disposed on the front side. The connecting wires extend on the back side of the mounting strip  3 . The device  2  has a connection section  69 , which can be snapped onto the latching strips  3 , as well as two cable guides  70 ,  71  for accommodating connecting lines  34 ,  35 . The cable guides  70 ,  71  are symmetrical with respect to a center plane, as is the double-walled partition  72 . The two cable guides  70 ,  71  are each accessible from the outside via two elastically deflectable legs  73 ,  74 . The legs  73 ,  74  are disposed on opposing sides that adjoin the connecting section  69 . 
       FIG. 27  shows a side view of a mounting strip  3  comprising an adapter element  66  snapped onto the latching strips  63 .  FIG. 28  shows a perspective view of the back side of the mounting strip  3  comprising two snapped-on adapter elements  66 . The adapter element  66  has a preferably centrally disposed bore  75 , which can be designed as a threaded bore or can have a roller-formed thread, an extruded hole, an insert nut, or the like, and one or more preferably eccentrically disposed, additional bores  76 , which can form a mechanical interface for securing additional components of the mounting system  1  onto the back side of the mounting strip  3 . The additional bore  76  can form, for example, a positioning part for securing additional components, for example, for inserting an associated positioning part of the additional components. The bores  75 ,  76  correspond to the receiving channel  68 , which is limited by the adapter element  66 , the two latching strips  63  and the connecting strip  67 . 
       FIG. 29  shows a second additional component  64  of the mounting system  1 , which second additional component is an additional bundling element for bundling supply lines  34 ,  35 . The second additional component  64  is a double-tracked bent wire element secured to the adapter element  66  in a clamped manner by a fastening element  77  screwed together with the adapter element  66 . When the fastening element  77  is partially loosened, the second additional component  64  is still held, but can be moved relative to the adapter element  66  along the two wire tracks extending parallel to one another and can be subsequently clamped again such that the desired position of the two additional components  64  can be adjusted relative to the adapter element  66  or the mounting strip  3  fixed on the latching strips  63 . 
       FIG. 30  shows a side view of the mounting strip  3  having a cable duct  78  snapped onto the back side of the mounting strip  3  by the adapter element  66 . 
       FIG. 31  shows a perspective view of an additional exemplary embodiment of a mounting system  101 , in which at least one mounting strip  403  is connected, at or close to the two ends thereof, to a vertical profiled rod  4  by a connecting element  79  in each case. The connecting element  79  is formed from a section of a profile from which the profiled rod  4  is also produced. As an alternative, any other type of spacer can be used, for example, a profiled piece having smaller cross-sectional dimensions or a rod that has been trimmed to the desired separation of the mounting strip  403  from the profiled rod  4 . The head  55  of the screw, connecting the mounting strip  403  connected to the connecting element  79 , is disposed so as to be sunken in the groove  54  in the slide-nut channel  57 . 
       FIG. 32  shows a side view of a further exemplary embodiment of a mounting strip  503 , which can be fastened to a profiled rod  4  by a connecting element  79 . The connecting element  79  preferably has a square cross-section and has an edge length that corresponds to or is slightly shorter than the separation between the two latching strips  63 . The latching strips  63  then form a guide, by a form closure, when the connecting element  79  is inserted into the receiving channel  68  delimited by the latching strips  63  ( FIG. 27 ). In addition, when any type of spacer other than the connecting element  79  is used, advantageously this spacer also has a form closure with the latching strips  63 , for example in the case of a spacer rod having a round cross-section or rounded corners. When this spacer rod has two mutually opposing, flattened sides on the end section thereof facing the mounting strip  503 , the separation of which corresponds to the separation of the latching strips  63 . 
     In a manner similar to the above-described exemplary embodiments, the mounting strip  503  comprises a receiving device  120  for ordering assembly  8  or additional components  10  as well as a slide-nut channel  57  having a groove  54 . However, the mounting strip  503  does not have a support rail  6 . Instead, the devices  2  are secured to the mounting strip  503  by screws, which can be screwed together with nuts that are disposed in the slide-nut channel  57  and can be displaced therein. The sections of the mounting strip  503  adjoining the two sides of the slide-nut channel  57  are planar, for example for placement thereon, over a large area, of the device  2  to be secured. The ends of the planar sections facing away from the slide-nut channel  57  are bent at right angles. Each channel  57  ultimately forms a receiving device  120  offset relative to the plane defined by the planar sections. 
       FIG. 33  shows a side view of a further exemplary embodiment of a mounting strip  603 , which can be fastened to a profiled rod  4  by a connecting element  79 . The mounting strip  603  has a convex curvature on the front side thereof, wherein a support rail  6  is disposed at the position of the greatest protrusion of said curvature. Whereas the support rail  6  and the slide-nut channel  57  having the groove  54  are symmetrical relative to the center plane  40 , the profile of the mounting strip  603  is asymmetrical relative to this center plane  40 . The second section  142 , which adjoins the support rail  6  on one side and terminates at the receiving device  120 , has a greater extension in the lateral direction than the second section  242  adjoining the support rail  6  on the other side. In contrast thereto, the vertical distance  44  between the two sections  142 ,  242  is the same. 
     While various embodiments have been chosen to illustrate the invention, it will be understood by those skilled in the art that various changes and modifications can be made therein without departing from the scope of the invention as defined in the claims.