Title of Invention	"FRAMEWORK FOR A SWITCHGEAR CABINET"
Abstract	The invention relates to a framework for a switchgear cabinet, which framework comprises a base part, a cover part and four vertical frame legs, with the base part and/or the cover part being made up of two longitudinal struts and two depthwise struts which are formed from angled portions, of a single-piece stamped and bent part, with the base part and/or the cover part having, in the four corner regions, receptacles which are open towards the outside and into which the vertical frame legs are inserted and. connected to the base and cover frame, and with the angled .sections which form the longitudinal and depthwise struts forming, in the region of the receptacles, centring surfaces, support surfaces and weld edges for the vertical frame legs to be inserted and welded in two planes A framework which , can be sealed off and/or screened in a compact manner is provided using a low number of parts which, are simple to produce by virtue of special design of the base part and/or cover part which is in the form of a stamped and bent part.

Title of Invention

"FRAMEWORK FOR A SWITCHGEAR CABINET"

Abstract

The invention relates to a framework for a switchgear cabinet, which framework comprises a base part, a cover part and four vertical frame legs, with the base part and/or the cover part being made up of two longitudinal struts and two depthwise struts which are formed from angled portions, of a single-piece stamped and bent part, with the base part and/or the cover part having, in the four corner regions, receptacles which are open towards the outside and into which the vertical frame legs are inserted and. connected to the base and cover frame, and with the angled .sections which form the longitudinal and depthwise struts forming, in the region of the receptacles, centring surfaces, support surfaces and weld edges for the vertical frame legs to be inserted and welded in two planes A framework which , can be sealed off and/or screened in a compact manner is provided using a low number of parts which, are simple to produce by virtue of special design of the base part and/or cover part which is in the form of a stamped and bent part.

Full Text	RITTAL GmbH &- Co. KG Auf dem Stutzelberg 35745 Herborn Framework for a switchgear cabinet The invention relates to a framework for a switchgear cabinet, which framework comprises a base part, a cover part and four vertical frame legs, with the base part and/or the cover part being made up of two longitudinal struts and two depthwise struts which are formed from angled portions of a single-piece stamped and bent part, with the base part and/or the cover part having, in the four corner regions, receptacles which are open towards the outside and into which the vertical frame legs are inserted and connected to the base and/or cover frame, and with the angled sections Which form the longitudinal and depthwise struts forming, in the region of the receptacles, centring surfaces, supporting surf aces and-, weld edges for the vertical frame legs to be inserted and welded in two planes. A framework of this type ds known from DE 196 47 790 C2. In this case/ the base part simultaneously serves as a base for the switchgear cabinet and, as a base frame, forms an insertion opening for the connection cables and the like. Given identical design of the top part, this embodiment of the framework requires an additional covering at least in this upper region of the switchgear cabinet framework. If a framework of this type is used to produce switchgear cabinets to be placed outdoors or in damp areas, a hermetically leak-tight interior is then required, with the transitions between the framework and the wall elements and the cabinet doors particularly being sealed off by means of additional sealing elements. A completely screened interior of the switchgear cabinet is often, -also required, it being possible for the sealing elements to assume the screening function. The object of the invention is to provide a framework for a switchgear cabinet of the type mentioned in the introduction, which framework is hermetically sealed off and screened at least in the base and cover region without additional means having to be used, and to which framework wall elements and a cabinet door can be easily fitted in order to complete sealing and screening. According to the invention, this object is firstly achieved in that the base part and/or the cover part each have a closed outer plate which is averted from the interior of the framework, in that the angled sections which form the longitudinal and depthwise struts have vertical spacer sections in the direction of the interior- of the • framework and merge with horizontal, outwardly directed supporting sections, in that vertical outer sections adjoin the supporting sections, in that the outer sections merge with horizontal,' inwardly directed centring sections which, with their end faces which are recessed into the receptacles, form the centring surface, and in that the support sections end in weld edges in the receptacles, which weld edges are aligned with and welded to the outer contour of the inserted vertical frame legs. In the same way, the object of the invention is achieved in that the base part and/or the cover part each have a closed inner plate Which faces the interior of the framework, in that the angled sections which form the longitudinal and depthwise struts have vertical spacer sections which are averted from• the interior of the framework and merge: With horizontal, inwardly directed supporting sections, in that vertical outer sections which are directed backwards and merge with horizontal, inwardly directed termination sections adjoin these supporting section's, in that the termination sections merge with vertical; inner sections which end in horizontal, outwardly directed auxiliary supporting sections, in that the inner , plate has, in the corner regions, recesses which, with their edges, form centring surfaces and weld edges for the vertical frame legs on the supporting sections and auxiliary supporting sections with the vertical spacer sections terminating with the centring surf aces of the inner plate in the region of the recesses. In either case, the base part and cover part on the lower and upper face of the framework provide complete sealing off and screening and can be produced as simple stamped and bent parts Furthermore, the angled longitudinal and depthwise struts of the base part and cover part provide ideal options for attaching wall elements and •a' -cabinet door with sealing and/or screening elements.on . profiled sides of the vertical frame legs also being available at angled sections of the base and cover part in order to seal off and/or screen the interior--of the switchgear cabinet. If provision is made in the two design variants for the vertical spacer sections -to be shorter than the vertical outer sections of the longitudinal and depthwise struts or: for the recessed outer sections of the longitudinal and depthwise struts of the base and/or cover part to be shorter than the vertical spacer sections, the interior can then be utilized in an optimum fashion for installing components and the like. The connection of the vertical frame legs in the outwardly directed receptacles of the base and/or cover part can be improveid: by the1 vertical outer sections of the longitudinal and depthwise. struts abutting and being connected, preferably welded, to one another in the corner regions, and by the weld edges of the horizontal support sections' and the outer contours of the vertical frame -legs coinciding with the abutting spacer sections of the, longitudinal and depthwise struts in the corner regions of the base and/or cover part, or by the recessed outer sections of the longitudinal and depthwise struts of the base and/or cover part being shorter than the vertical spacer sections. The vertical frame legs . can then be welded in the receptacles in two spaced-apart planes, and this increases the flexUral strength between vertical frame legs and the base and/or cover part. Support for the vertical frame legs in the base and/or cover part is improved in the two embodiments by the horizontal supporting sections of the longitudinal and depthwise struts extending into the corner regions of the base and/or cover part and being connected to one another, preferably forming welded closed support surfaces for the vertical frame legs, or by the horizontal supporting sections and the horizontal auxiliary supporting sections of the longitudinal and depthwise struts in the base and/or cover part abutting in the corner regions-, forming outer corners and being connected, preferably welded, to one another, and the supporting sections: and auxiliary supporting sections forming closed support surfaces for the vertical frame legs. Further advantageous refinements of the two types of framework can be found in the subclaims and the description of exemplary embodiments. The invention is described in detail with reference to two exemplary embodiments which are illustrated in the drawings, in which: Fig. 1 shows a view of the outer side of the corner of a framework in the region of the base part, with the vertical frame leg not yet inserted or welded ,into the receptacle of the base part, Fig. 2 shows the .same view of the base part corner with the vertical .frame leg inserted and welded, Fig. 3 shows a cross section along line Ill-Ill according to Fig. 1, Fig. 4 shows the corner connection according to Fig. 2 of the inner contour of the vertical frame leg, Fig. 5 shows the cross section, which corresponds to Fig. 3, of a base part with a closed inner plate which faces the interior, and Fig. 6 shows a view; which corresponds to Fig. 4, from the inside of a base .corner with a base part according to Figv 5. . First of all, reference ds made to the fact that the base part 20 is also used as a cover part when in a position in which it is rotated through 180°, and that the two parts are connected to one another by means of four vertical frame legs 10. The same vertical frame legs 10 are used for' the two embodiments, these frame legs defining the outer contour with the profiled sides 11, 12.1, 12.2, 12.3 and 12.4, and defining the inner contour of the vertical frame legs 10 with the profiled sides 12.5, 12; 6 and 12.7. In this case, the cross section of the vertical frame legs 10 forms a mirror image with respect to the diagonal of the base part 20. The base part 20 (and therefore also the identical cover part 20) has a closed outer plate AP, as can be seen in Fig. 1. 'Longitudinal-'and depthwise struts 30 and 40 are angled away on the four sides, with two longitudinal struts 30 and two depthwise struts 40 being situated opposite one another. The outer face 44 of the outer plate AP forms the placement surface of the framework on the base part 20, whereas it forms the termination surface of the framework on the cover part 20, as shown in the section according to Fig. 3. On the outer plate AP, the vertical spacer sections 33 and 43 are angled away towards the interior. These spacer sections 33 and 43 /merge with horizontal, outwardly directed supporting sections 32 and 42. Vertical outer sections 31 and 41 which, in turn, merge with horizontal centring sections 37 and 47 adjoin these supporting sections 32 and 42. The vertical spacer sections 33 and 43 abut in the corner regions and can be connected, preferably welded, to one another. The horizontal centring sections 37 and 47 abut only in the region of the inner side and, with their end faces, bound the centring surfaces -36 and 46. The horizontal supporting sections 32 arid 42' of the- longitudinal and depthwise struts 30-arid 40 extend beyond the end faces of the longitudinal and depthwise struts 30 and 40 into the receptacle 51 - for the vertical frame leg 10 and form a closed supporting 'surface for the end face 12.8 of the vertical frame leg 10. The outer edges 35 and 45 of the horizontal supporting sections 32 and 42 are matched to the outer contour of the vertical frame leg 10. If the vertical frame leg 10 is inserted into the receptacle, the profiled sides 12.5 then rest against the end-face centring surfaces 36 and 46 of the horizontal centring sections 37 and 47. The profiled sides 12.4 terminate flush with the vertical outer sections 31 and' 41. As shown -in Fig. 2, a weld seam 50 which is produced' us-ing a, welding device 60 can weld the end face 12.8 of- the vertical frame leg 10 to the outer edges 35 and 45 of the horizontal supporting sections 32 and 42 in a manner following the outer contour. In addition, a: weld seam 50 can close the transition from the vertical outer sections 31 and 41 to the profiled sides-12.5 of the vertical frame leg 10. The lower faces 34 and .44 pi the longitudinal and depthwise struts 30 and 40,are; formed by the outer face of the outer plate AP. As is clearly- shown in Fig. 2, the profiled sides 1.2.3 .,to the profiled sides 12.2 form shoulders which can accommodate angled borders of wall elements or a cabinet door. These transitions can be easily unambiguously closed by means of sealing or screening strips. As is further shown :in Pig. 1, the horizontal supporting sections 32 and 42 can meet in the region of the inner corner of the longitudinal and depthwise struts 30 and 40-and-be aligned with the inner abutment point of the horizontal centring ' sections 37 and 47. The abutting edges of the horizontal supporting sections 32 and' 42 /can -also 'be connected to one another. As shown, in'the view': according to Fig. 4, the vertical spacer sections 33 and 43 and the vertical outer sections 31 and 41 . can have different heights, with the result that the height of the base and cover part 20 cail be varied. In this way, the interior of the switchgear cabinet can be utilized in an optimum fashion. The horizontal centring sections 37 and 47 can advantageously be provided with rows of fastening receptacles, like the profiled sides 12.5 and 12.6 of the vertical frame legs 10. • Fig. 5 shows another refinement of the base and cover part 20. A stamped arid bent part with an inner plate IP is used in this refinement too. This inner plate IP is virtually closed, as indicated by the reference symbol 47'. Recesses -51' - which permit the vertical frame legs 10 to be inserted are provided only in the corner regions. The angled portions, on the four sides of the inner plate IP are directed, outwards, that is to say away from the interior of the framework. The first vertical spacer sections 31' .and 41'. merge with horizontal supporting sections 32' and 42, which are directed inwards. Vertical outer sections 33' and 43' then adjoin these horizontal supporting sections. Inwardly directed termination sections 34' and 44' protrude from these outer sections 33' and 43', the said termination sections defining the standing surface of the base part 20' . The termination sections 34' and 44' are adjoined by inner sections 38' and .4.8' which are directed towards the inner plate' IP and 'merge with horizontal, outwardly directed auxiliary supporting sections 39' and 49' . The supporting sections 32' and 42' and the auxiliary supporting sections 39' and 49' may form closed supporting.surfaces .for the end faces 12.8' of the vertical frame' legs 10 beneath the recesses 51' in the corner regions of the inner plate IP, while the edges 35' and 4:5'-/ and also 36,' and 46' of the recesses 51' form centring siirf aces and connection lines for weld seams. The section according to Fig. 5 crosses the depthwise struts 40 and does not differ from the section across the: longitudinal struts 30' of the base and cover- part 20 The only difference is that reference symbols 40' to 49' change to 30' to 39'. In this base and cover part 20', the auxiliary supporting sections 39 and 49' can be conducted as far as the supporting :section 32' and 42' and can be connected, preferably welded, to one another. The abutment and centring edges of the recesses 51' in the corner regions are also welded to' the facing profiled sides of the vertical frame legs 10. In addition, the inner section 38' and 48' can be matched to the inner contour of the vertical frame leg10 and be connected, preferably welded, to said vertical frame leg. Welding is again achieved in two planes in this way, and the strength of the connection is thus improved. As shown in the view according to Fig. 6, the inner contour of the vertical frame leg 10 then adjoins the recess 51' in the inner plate IP, with the edges 36' and 46' assuming responsibility for abutment and centring of the -vertical frame leg 10. In this case, the end face 12.8' of' the vertical frame leg 10 is positioned on the' supporting surface of the horizontal supporting section 32' and 42' and of the auxiliary supporting section 39' and, respectively, 49'. In this refinement of the base and cover part 20' too, the vertical spacer' sections 31' and 41' and also the outer sections 33' and 43' 'and inner sections 38' and 48' can be formed with different heights and the inner plate IP can be provided with rows of fastening receptacles over the longitudinal and depthwise struts 30' and 40' in order to increase the installation options. ' The outer sections /31'- and '41' can also form outer corners in the! region of the recesses 51', the said outer corners projecting beyond the outer contour of the vertical frame legs '10. The horizontal supporting sections 32' and 42' and the horizontal auxiliary supporting sections 38' and 48' then terminate flush with the outer faces of the outer sections 31' and 41'. The outer contours of the - vertical frame legs 10 are then welded to the supporting sections 32' and 42' and also auxiliary supporting sections 38' and 48'. In this case, the supporting sections 32' and 42' and the auxiliary supporting sections 38' and 48' may abut on the diagonal of the base and cover part 20' and also be connected, preferably welded, to one another. According to the invention, identical base and covering parts 20 can be used on one framework. However, it. is also feasible to combine different base and covering parts 20. Patent claims 1. Framework for a switchgear cabinet, which framework comprises a base part, a cover part and four vertical frame legs, with the base part and/or the cover part being made up of two longitudinal struts and two depthwise struts which are formed from angled portions of a single-piece stamped and bent part, with the base part and/or the cover part having, in the four corner regions, receptacles which are open towards the outside and into which the vertical frame legs are inserted and connected to the base and/or cover frame, and with the angled sections which form the longitudinal and depthwise struts forming, in the region of the receptacles, centring surfaces, support surfaces and weld edges for the vertical frame legs to be inserted and welded in two planes, characterized in that the base part and/or the cover part (20) each have a closed outer plate (AP) which is averted from the interior of the framework, in that the angled sections which form the longitudinal and depthwise struts (30 and 40) have vertical spacer sections (33, 43) in the direction of the interior of the framework and merge with horizontal, outwardly directed supporting sections (32, 42), in that vertical outer sections (31, 41) adjoin the supporting sections (32, 42) , in that the outer sections (31, 41) merge with horizontal, inwardly directed centring sections (37, 47) which, with their end faces which are recessed into the receptacles, form the centring surface (36, 46), and in that the support sections (32; 42) end in weld edges (35, 45) in the receptacles, which weld edges are aligned with and welded to the outer contour of the inserted vertical frame legs (10). 2. Framework for a, switchgear cabinet, which framework comprises a base, part, a cover part and four vertical frame legs, with the base part and/or the cover part being made up of two longitudinal struts and two depthwise struts which are formed from angled portions of a single-piece stamped and bent part, with the base part and/or the cover part having,, in the four corner regions, receptacles which are open towards the outside and into which the vertical frame legs are inserted and connected to the base and/or cover frame, and with the angled sections which form the longitudinal and depthwise struts forming, in the region of the receptacles, centring surfaces, supporting surfaces .and weld edges for the vertical frame legs to be inserted and welded in two planes, characterized in that the base part and/or .the cover part (20) each have a closed inner plate (IP) which faces the interior of the framework, in that the angled sections 'which form the longitudinal and depthwise struts (30 'and .40) have vertical spacer sections (31, 41) which 'are averted from the interior of the framework and merge with horizontal, inwardly directed supporting sections (32, 42'), in that vertical outer sections (33', 43') which are directed backwards and merge 'with horizontal, inwardly directed termination sections (34', 44') adjoin these supporting sections (32' , 42'•)', in that the termination sections (34', 44') merge with vertical inner sections (38', 48') which end in horizontal, outwardly directed auxiliary supporting sections (39', 49') , in that the inner plate • (IP) has, in the corner regions, recesses (51') which, with their edges (35', 45' and 36', 46'), form centring surfaces (36' and 46') and weld edges for the vertical frame legs (10) on the supporting sections (32', 42') and auxiliary supporting sections (39', 49'), with the vertical spacer sections (31', 41') terminating, with the centring surfaces (36', 46') of the inner plate (IP) in the region of the recesses (51'). 3. Framework according to Claim 1, characterized in that the vertical spacer sections (33, 43) are shorter than the vertical outer sections (31, 41) of the longitudinal and depthwise struts (30 and 40) . 4. Framework .according to Claims 1 and 3, characterized in that the vertical .outer sections (31, 41) of the longitudinal and depthwise struts (30 and 40) abut and are connected, preferably welded, to one another in the corner regions, and in that the weld edges (35, 45) of the horizontal support sections (32, 42) and the outer contours of the vertical frame legs (10) coincide with the abutting spacer sectibns (3'3, ,, 43) of the longitudinal and depthwise struts (30 and 40) in the corner regions of the base and cover part (20). 5. Framework according to one of Claims 1, 3 and 4, characterized in that the horizontal support sections (32, 42) of the longitudinal and depthwise struts (30 and 40) extend into the corner regions of the base and/or cover part (20) and are connected to one" another, preferably form welded closed support surfaces for the vertical frame legs (10). 6. Framework according to one of Claims 1 and 3 to 5, characterized in that the vertical outer sections (31, 41) of the longitudinal and depthwise struts (30 and 40) of the base and/or cover part (20) terminate flush with profiled sides (12.4) of the outer contour of the vertical frame leg, and in that these profiled sides (12.4) merge with the outer contour of the vertical frame legs (10) by means of inwardly directed profiled sides (12.3), which are perpendicular to said profiled sides (12.4), and form shoulders for accommodating angled borders of wall elements or a switchgear cabinet door. 7. Framework according to Claim 2, characterized in that the recessed outer sections (33', 3') of the longitudinal and depthwise struts (30' and 40') of the base and/or cover part (20') are shorter than the vertical spacer sections (31', 41'). 8. Framework according to Claims 2 and 7, characterized in that the horizontal supporting sections (32', 42') and the horizontal auxiliary 'supporting sections (39', 49') of the longitudinal and depthwise struts (30' and 40') in the base and/or cover part (20') abut in the corner regions; form outer corners and are connected, preferably welded, to one another, and the supporting sections (32', 42') and auxiliary supporting sections (39', 49') form closed support surfaces for the vertical frame legs (10); 9. Framework according to Claims 2 and 7, characterized in that the vertical spacer sections (31', 41') merge with one another in the corner regions of the base and/or cover part (20') in a manner matched to the outer contour of the vertical frame legs (10) and are connected, preferably welded, to one another. 10. Framework according to one of Claims 2 and 7 to 9, characterized in that, in the region of the longitudinal and depthwise struts -(30' and 40'), the recesses (51') in the inner plate (IP) follow the centring surfaces (36', 46) of the inner contour of the vertical frame legs (10) and are connected, preferably welded, to the said centring surfaces, and- in that the. vertical spacer sections (31', 41') are connected, preferably welded, to the vertical frame legs (10) such thatthey are flush. 11.Framework according to one of Claims 2 and 7 to 9 characterized in-that the vertical inner sections (38', 48') of the longitudinal and depthwise struts (30' and 40') of the base and/or cover part (20') are matched to the inner contour of the vertical frame legs (10) and terminate flush with- the said inner contour on the outer sides, and in that the inner Sections (38' , 48') are connected, preferably welded/ to-'one'another/flush with the inner contours of the vertical frame legs (10). 12. Framework according to one of Claims 2 and 7 to 9, characterized in that the horizontal supporting sections (32', 42') follow, with their outer edges, the outer contour of the vertical frame legs (10) and .terminate flush with the outer side's of the vertical spacer sections (31', 41' ), and in that the horizontal supporting and auxiliary supporting sections (32', 42' and 39', 49') reach as far as the diagonal of the base and/or cover part (20') and, beneath the recesses (51'), form closed supporting surfaces for the end faces (i2.8') of the vertical frame legs (10).

Full Text

RITTAL GmbH &- Co. KG Auf dem Stutzelberg 35745 Herborn
Framework for a switchgear cabinet
The invention relates to a framework for a switchgear cabinet, which framework comprises a base part, a cover part and four vertical frame legs, with the base part and/or the cover part being made up of two longitudinal struts and two depthwise struts which are formed from angled portions of a single-piece stamped and bent part, with the base part and/or the cover part having, in the four corner regions, receptacles which are open towards the outside and into which the vertical frame legs are inserted and connected to the base and/or cover frame, and with the angled sections Which form the longitudinal and depthwise struts forming, in the region of the receptacles, centring surfaces, supporting surf aces and-, weld edges for the vertical frame legs to be inserted and welded in two planes.
A framework of this type ds known from DE 196 47 790 C2. In this case/ the base part simultaneously serves as a base for the switchgear cabinet and, as a base frame, forms an insertion opening for the connection cables and the like. Given identical design of the top part, this embodiment of the framework requires an additional covering at least in this upper region of the switchgear cabinet framework.
If a framework of this type is used to produce switchgear cabinets to be placed outdoors or in damp areas, a hermetically leak-tight interior is then required, with the transitions between the framework and the wall elements and the cabinet doors particularly being sealed off by means of additional sealing elements. A completely screened interior of the switchgear cabinet is often, -also required, it being
possible for the sealing elements to assume the screening function.
The object of the invention is to provide a framework for a switchgear cabinet of the type mentioned in the introduction, which framework is hermetically sealed off and screened at least in the base and cover region without additional means having to be used, and to which framework wall elements and a cabinet door can be easily fitted in order to complete sealing and screening.
According to the invention, this object is firstly achieved in that the base part and/or the cover part each have a closed outer plate which is averted from the interior of the framework, in that the angled sections which form the longitudinal and depthwise struts have vertical spacer sections in the direction of the interior- of the • framework and merge with horizontal, outwardly directed supporting sections, in that vertical outer sections adjoin the supporting sections, in that the outer sections merge with horizontal,' inwardly directed centring sections which, with their end faces which are recessed into the receptacles, form the centring surface, and in that the support sections end in weld edges in the receptacles, which weld edges are aligned with and welded to the outer contour of the inserted vertical frame legs. In the same way, the object of the invention is achieved in that the base part and/or the cover part each have a closed inner plate Which faces the interior of the framework, in that the angled sections which form the longitudinal and depthwise struts have vertical spacer sections which are averted from• the interior of the framework and merge: With horizontal, inwardly directed supporting sections, in that vertical outer sections which are directed backwards and merge with horizontal, inwardly directed termination sections adjoin these supporting section's, in that the termination sections
merge with vertical; inner sections which end in horizontal, outwardly directed auxiliary supporting sections, in that the inner , plate has, in the corner regions, recesses which, with their edges, form centring surfaces and weld edges for the vertical frame legs on the supporting sections and auxiliary supporting sections with the vertical spacer sections terminating with the centring surf aces of the inner plate in the region of the recesses.
In either case, the base part and cover part on the lower and upper face of the framework provide complete sealing off and screening and can be produced as simple stamped and bent parts Furthermore, the angled longitudinal and depthwise struts of the base part and cover part provide ideal options for attaching wall elements and •a' -cabinet door with sealing and/or screening elements.on . profiled sides of the vertical frame legs also being available at angled sections of the base and cover part in order to seal off and/or screen the interior--of the switchgear cabinet.
If provision is made in the two design variants for the vertical spacer sections -to be shorter than the vertical outer sections of the longitudinal and depthwise struts or: for the recessed outer sections of the longitudinal and depthwise struts of the base and/or cover part to be shorter than the vertical spacer sections, the interior can then be utilized in an optimum fashion for installing components and the like.
The connection of the vertical frame legs in the outwardly directed receptacles of the base and/or cover part can be improveid: by the1 vertical outer sections of the longitudinal and depthwise. struts abutting and being connected, preferably welded, to one another in the corner regions, and by the weld edges of the horizontal support sections' and the outer contours of
the vertical frame -legs coinciding with the abutting spacer sections of the, longitudinal and depthwise struts in the corner regions of the base and/or cover part, or by the recessed outer sections of the longitudinal and depthwise struts of the base and/or cover part being shorter than the vertical spacer sections.
The vertical frame legs . can then be welded in the receptacles in two spaced-apart planes, and this increases the flexUral strength between vertical frame legs and the base and/or cover part.
Support for the vertical frame legs in the base and/or cover part is improved in the two embodiments by the horizontal supporting sections of the longitudinal and depthwise struts extending into the corner regions of the base and/or cover part and being connected to one another, preferably forming welded closed support surfaces for the vertical frame legs, or by the horizontal supporting sections and the horizontal auxiliary supporting sections of the longitudinal and depthwise struts in the base and/or cover part abutting in the corner regions-, forming outer corners and being connected, preferably welded, to one another, and the supporting sections: and auxiliary supporting sections forming closed support surfaces for the vertical frame legs.
Further advantageous refinements of the two types of framework can be found in the subclaims and the description of exemplary embodiments.
The invention is described in detail with reference to two exemplary embodiments which are illustrated in the drawings, in which:

Fig. 1 shows a view of the outer side of the corner of a framework in the region of the base part,
with the vertical frame leg not yet inserted or welded ,into the receptacle of the base part,
Fig. 2 shows the .same view of the base part corner with the vertical .frame leg inserted and welded,

Fig. 3 shows a cross section along line Ill-Ill according to Fig. 1,
Fig. 4 shows the corner connection according to Fig. 2 of the inner contour of the vertical frame leg,
Fig. 5 shows the cross section, which corresponds to Fig. 3, of a base part with a closed inner plate which faces the interior, and
Fig. 6 shows a view; which corresponds to Fig. 4, from the inside of a base .corner with a base part according to Figv 5. .
First of all, reference ds made to the fact that the base part 20 is also used as a cover part when in a position in which it is rotated through 180°, and that the two parts are connected to one another by means of four vertical frame legs 10. The same vertical frame legs 10 are used for' the two embodiments, these frame legs defining the outer contour with the profiled sides 11, 12.1, 12.2, 12.3 and 12.4, and defining the inner contour of the vertical frame legs 10 with the profiled sides 12.5, 12; 6 and 12.7. In this case, the cross section of the vertical frame legs 10 forms a mirror image with respect to the diagonal of the base part 20.
The base part 20 (and therefore also the identical cover part 20) has a closed outer plate AP, as can be seen in Fig. 1. 'Longitudinal-'and depthwise struts 30 and 40 are angled away on the four sides, with two longitudinal struts 30 and two depthwise struts 40
being situated opposite one another. The outer face 44 of the outer plate AP forms the placement surface of the framework on the base part 20, whereas it forms the termination surface of the framework on the cover part 20, as shown in the section according to Fig. 3. On the outer plate AP, the vertical spacer sections 33 and 43 are angled away towards the interior. These spacer sections 33 and 43 /merge with horizontal, outwardly directed supporting sections 32 and 42. Vertical outer sections 31 and 41 which, in turn, merge with horizontal centring sections 37 and 47 adjoin these supporting sections 32 and 42.
The vertical spacer sections 33 and 43 abut in the corner regions and can be connected, preferably welded, to one another.
The horizontal centring sections 37 and 47 abut only in the region of the inner side and, with their end faces, bound the centring surfaces -36 and 46. The horizontal supporting sections 32 arid 42' of the- longitudinal and depthwise struts 30-arid 40 extend beyond the end faces of the longitudinal and depthwise struts 30 and 40 into the receptacle 51 - for the vertical frame leg 10 and form a closed supporting 'surface for the end face 12.8 of the vertical frame leg 10. The outer edges 35 and 45 of the horizontal supporting sections 32 and 42 are matched to the outer contour of the vertical frame leg 10.
If the vertical frame leg 10 is inserted into the receptacle, the profiled sides 12.5 then rest against the end-face centring surfaces 36 and 46 of the horizontal centring sections 37 and 47. The profiled sides 12.4 terminate flush with the vertical outer sections 31 and' 41. As shown -in Fig. 2, a weld seam 50 which is produced' us-ing a, welding device 60 can weld the end face 12.8 of- the vertical frame leg 10 to the outer edges 35 and 45 of the horizontal supporting

sections 32 and 42 in a manner following the outer
contour.
In addition, a: weld seam 50 can close the transition from the vertical outer sections 31 and 41 to the profiled sides-12.5 of the vertical frame leg 10. The lower faces 34 and .44 pi the longitudinal and depthwise struts 30 and 40,are; formed by the outer face of the outer plate AP. As is clearly- shown in Fig. 2, the profiled sides 1.2.3 .,to the profiled sides 12.2 form shoulders which can accommodate angled borders of wall elements or a cabinet door. These transitions can be easily unambiguously closed by means of sealing or screening strips.
As is further shown :in Pig. 1, the horizontal supporting sections 32 and 42 can meet in the region of the inner corner of the longitudinal and depthwise struts 30 and 40-and-be aligned with the inner abutment point of the horizontal centring ' sections 37 and 47. The abutting edges of the horizontal supporting sections 32 and' 42 /can -also 'be connected to one another. As shown, in'the view': according to Fig. 4, the vertical spacer sections 33 and 43 and the vertical outer sections 31 and 41 . can have different heights, with the result that the height of the base and cover part 20 cail be varied. In this way, the interior of the switchgear cabinet can be utilized in an optimum fashion. The horizontal centring sections 37 and 47 can advantageously be provided with rows of fastening receptacles, like the profiled sides 12.5 and 12.6 of the vertical frame legs 10. •
Fig. 5 shows another refinement of the base and cover part 20. A stamped arid bent part with an inner plate IP is used in this refinement too. This inner plate IP is virtually closed, as indicated by the reference symbol 47'. Recesses -51' - which permit the vertical
frame legs 10 to be inserted are provided only in the corner regions.
The angled portions, on the four sides of the inner plate IP are directed, outwards, that is to say away from the interior of the framework. The first vertical spacer sections 31' .and 41'. merge with horizontal supporting sections 32' and 42, which are directed inwards. Vertical outer sections 33' and 43' then adjoin these horizontal supporting sections. Inwardly directed termination sections 34' and 44' protrude from these outer sections 33' and 43', the said termination sections defining the standing surface of the base part 20' . The termination sections 34' and 44' are adjoined by inner sections 38' and .4.8' which are directed towards the inner plate' IP and 'merge with horizontal, outwardly directed auxiliary supporting sections 39' and 49' . The supporting sections 32' and 42' and the auxiliary supporting sections 39' and 49' may form closed supporting.surfaces .for the end faces 12.8' of the vertical frame' legs 10 beneath the recesses 51' in the corner regions of the inner plate IP, while the edges 35' and 4:5'-/ and also 36,' and 46' of the recesses 51' form centring siirf aces and connection lines for weld seams. The section according to Fig. 5 crosses the depthwise struts 40 and does not differ from the section across the: longitudinal struts 30' of the base and cover- part 20 The only difference is that reference symbols 40' to 49' change to 30' to 39'.
In this base and cover part 20', the auxiliary supporting sections 39 and 49' can be conducted as far as the supporting :section 32' and 42' and can be connected, preferably welded, to one another. The abutment and centring edges of the recesses 51' in the corner regions are also welded to' the facing profiled sides of the vertical frame legs 10. In addition, the inner section 38' and 48' can be matched to the inner contour of the vertical frame leg10 and be connected,
preferably welded, to said vertical frame leg. Welding is again achieved in two planes in this way, and the strength of the connection is thus improved.
As shown in the view according to Fig. 6, the inner contour of the vertical frame leg 10 then adjoins the recess 51' in the inner plate IP, with the edges 36' and 46' assuming responsibility for abutment and centring of the -vertical frame leg 10. In this case, the end face 12.8' of' the vertical frame leg 10 is positioned on the' supporting surface of the horizontal supporting section 32' and 42' and of the auxiliary supporting section 39' and, respectively, 49'.
In this refinement of the base and cover part 20' too, the vertical spacer' sections 31' and 41' and also the outer sections 33' and 43' 'and inner sections 38' and 48' can be formed with different heights and the inner plate IP can be provided with rows of fastening receptacles over the longitudinal and depthwise struts 30' and 40' in order to increase the installation
options. '
The outer sections /31'- and '41' can also form outer corners in the! region of the recesses 51', the said outer corners projecting beyond the outer contour of the vertical frame legs '10. The horizontal supporting sections 32' and 42' and the horizontal auxiliary supporting sections 38' and 48' then terminate flush with the outer faces of the outer sections 31' and 41'. The outer contours of the - vertical frame legs 10 are then welded to the supporting sections 32' and 42' and also auxiliary supporting sections 38' and 48'. In this case, the supporting sections 32' and 42' and the auxiliary supporting sections 38' and 48' may abut on the diagonal of the base and cover part 20' and also be connected, preferably welded, to one another.
According to the invention, identical base and covering
parts 20 can be used on one framework. However, it. is
also feasible to combine different base and covering
parts 20.

Patent claims
1. Framework for a switchgear cabinet, which
framework comprises a base part, a cover part and four
vertical frame legs, with the base part and/or the
cover part being made up of two longitudinal struts and
two depthwise struts which are formed from angled
portions of a single-piece stamped and bent part, with
the base part and/or the cover part having, in the four
corner regions, receptacles which are open towards the
outside and into which the vertical frame legs are
inserted and connected to the base and/or cover frame,
and with the angled sections which form the
longitudinal and depthwise struts forming, in the
region of the receptacles, centring surfaces, support
surfaces and weld edges for the vertical frame legs to
be inserted and welded in two planes,
characterized
in that the base part and/or the cover part (20) each have a closed outer plate (AP) which is averted from the interior of the framework,
in that the angled sections which form the longitudinal and depthwise struts (30 and 40) have vertical spacer sections (33, 43) in the direction of the interior of the framework and merge with horizontal, outwardly directed supporting sections (32, 42),
in that vertical outer sections (31, 41) adjoin the supporting sections (32, 42) ,
in that the outer sections (31, 41) merge with horizontal, inwardly directed centring sections (37, 47) which, with their end faces which are recessed into the receptacles, form the centring surface (36, 46), and
in that the support sections (32; 42) end in weld edges (35, 45) in the receptacles, which weld edges are aligned with and welded to the outer contour of the inserted vertical frame legs (10).
2. Framework for a, switchgear cabinet, which framework comprises a base, part, a cover part and four vertical frame legs, with the base part and/or the cover part being made up of two longitudinal struts and two depthwise struts which are formed from angled portions of a single-piece stamped and bent part, with the base part and/or the cover part having,, in the four corner regions, receptacles which are open towards the outside and into which the vertical frame legs are inserted and connected to the base and/or cover frame, and with the angled sections which form the longitudinal and depthwise struts forming, in the region of the receptacles, centring surfaces, supporting surfaces .and weld edges for the vertical frame legs to be inserted and welded in two planes, characterized
in that the base part and/or .the cover part (20) each have a closed inner plate (IP) which faces the interior of the framework,
in that the angled sections 'which form the longitudinal and depthwise struts (30 'and .40) have vertical spacer sections (31, 41) which 'are averted from the interior of the framework and merge with horizontal, inwardly directed supporting sections (32, 42'),
in that vertical outer sections (33', 43') which are directed backwards and merge 'with horizontal, inwardly directed termination sections (34', 44') adjoin these supporting sections (32' , 42'•)',
in that the termination sections (34', 44') merge with vertical inner sections (38', 48') which end in horizontal, outwardly directed auxiliary supporting sections (39', 49') ,
in that the inner plate • (IP) has, in the corner regions, recesses (51') which, with their edges (35', 45' and 36', 46'), form centring surfaces (36' and 46') and weld edges for the vertical frame legs (10) on the supporting sections (32', 42') and auxiliary supporting sections (39', 49'), with the vertical spacer sections (31', 41') terminating, with the centring surfaces (36',
46') of the inner plate (IP) in the region of the recesses (51').
3. Framework according to Claim 1,
characterized
in that the vertical spacer sections (33, 43) are shorter than the vertical outer sections (31, 41) of the longitudinal and depthwise struts (30 and 40) .
4. Framework .according to Claims 1 and 3,
characterized
in that the vertical .outer sections (31, 41) of the longitudinal and depthwise struts (30 and 40) abut and are connected, preferably welded, to one another in the corner regions, and
in that the weld edges (35, 45) of the horizontal support sections (32, 42) and the outer contours of the vertical frame legs (10) coincide with the abutting spacer sectibns (3'3, ,, 43) of the longitudinal and depthwise struts (30 and 40) in the corner regions of the base and cover part (20).

5. Framework according to one of Claims 1, 3 and 4,
characterized
in that the horizontal support sections (32, 42) of the longitudinal and depthwise struts (30 and 40) extend into the corner regions of the base and/or cover part (20) and are connected to one" another, preferably form welded closed support surfaces for the vertical frame legs (10).
6. Framework according to one of Claims 1 and 3 to 5,
characterized
in that the vertical outer sections (31, 41) of the longitudinal and depthwise struts (30 and 40) of the base and/or cover part (20) terminate flush with profiled sides (12.4) of the outer contour of the vertical frame leg, and
in that these profiled sides (12.4) merge with the outer contour of the vertical frame legs (10) by means of inwardly directed profiled sides (12.3), which are perpendicular to said profiled sides (12.4), and form shoulders for accommodating angled borders of wall elements or a switchgear cabinet door.
7. Framework according to Claim 2,
characterized
in that the recessed outer sections (33', 3') of the
longitudinal and depthwise struts (30' and 40') of the
base and/or cover part (20') are shorter than the
vertical spacer sections (31', 41').
8. Framework according to Claims 2 and 7,
characterized
in that the horizontal supporting sections (32', 42') and the horizontal auxiliary 'supporting sections (39', 49') of the longitudinal and depthwise struts (30' and 40') in the base and/or cover part (20') abut in the corner regions; form outer corners and are connected, preferably welded, to one another, and the supporting sections (32', 42') and auxiliary supporting sections (39', 49') form closed support surfaces for the vertical frame legs (10);
9. Framework according to Claims 2 and 7,
characterized
in that the vertical spacer sections (31', 41') merge with one another in the corner regions of the base and/or cover part (20') in a manner matched to the outer contour of the vertical frame legs (10) and are connected, preferably welded, to one another.
10. Framework according to one of Claims 2 and 7 to 9,
characterized
in that, in the region of the longitudinal and depthwise struts -(30' and 40'), the recesses (51') in the inner plate (IP) follow the centring surfaces (36',
46) of the inner contour of the vertical frame legs (10) and are connected, preferably welded, to the said centring surfaces, and-
in that the. vertical spacer sections (31', 41') are connected, preferably welded, to the vertical frame legs (10) such thatthey are flush.
11.Framework according to one of Claims 2 and 7 to 9
characterized
in-that the vertical inner sections (38', 48') of the
longitudinal and depthwise struts (30' and 40') of the
base and/or cover part (20') are matched to the inner
contour of the vertical frame legs (10) and terminate
flush with- the said inner contour on the outer sides,
and
in that the inner Sections (38' , 48') are connected,
preferably welded/ to-'one'another/flush with the inner
contours of the vertical frame legs (10).
12. Framework according to one of Claims 2 and 7 to 9, characterized
in that the horizontal supporting sections (32', 42') follow, with their outer edges, the outer contour of
the vertical frame legs (10) and .terminate flush with the outer side's of the vertical spacer sections (31', 41' ), and
in that the horizontal supporting and auxiliary
supporting sections (32', 42' and 39', 49') reach as
far as the diagonal of the base and/or cover part (20')
and, beneath the recesses (51'), form closed supporting
surfaces for the end faces (i2.8') of the vertical
frame legs (10).

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Patent Number

258257

Indian Patent Application Number

3933/DELNP/2007

PG Journal Number

52/2013

Publication Date

27-Dec-2013

Grant Date

23-Dec-2013

Date of Filing

25-May-2007

Name of Patentee

RITTAL GMBH & CO.KG.,

Applicant Address

AUF DEM STUTZELBERG, 35745 HERBORN, GERMANY.

Inventors:

#	Inventor's Name	Inventor's Address
1	MICHAEL DIEBEL	BIRKENWEG 8, 35687 DILLENBURG, GERMANY.
2	SAMUEL KLASSEN	HAIGERER STR. 25, 35708 HAIGER, GERMANY

PCT International Classification Number

H02B 1/30

PCT International Application Number

PCT/EP2005/012265

PCT International Filing date

2005-11-16

PCT Conventions:

#	PCT Application Number	Date of Convention	Priority Country
1	10 2004 063 106.9	2004-12-22	Germany