Static structures (e.g. – buildings) – Openwork; e.g. – truss – trellis – grille – screen – frame – or... – Three-dimensional space-defining
Patent
1997-11-26
1999-08-03
Friedman, Carl D.
Static structures (e.g., buildings)
Openwork; e.g., truss, trellis, grille, screen, frame, or...
Three-dimensional space-defining
52633, 525901, 527305, 527315, 211189, 211 26, 403 14, 403384, B25G 326
Patent
active
059309725
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a frame structure assembled from frame limbs for a switch gear cabinet in which the frame limbs are preferably designed in mirror-image like manner in relation to their cross section diagonals and in the interior region of the frame structure comprise two receiving formations provided with fastening rebates for fastening mounting rails, the said receiving formations being orientated parallel to the associated exterior sides of the frame structure.
A frame structure of this type is known from DE 43 36 204. Having only few fastening rebates and/or bores, the frame limbs merely form a support structure which at any desired location at the frame limbs may be provided with mounting rails, in which context the mounting rails provide fixation facilities in accordance with a predetermined modular system in two directions normal to one another.
The rebates for the mounting rails are confined by two receiving formations of the frame limbs, at right angles to one another, for which purpose preferably mounting rails are used which are substantially designed as square hollow profile sections, the said mounting rails being fitted to the receiving formations of the frame limbs by way of screw connections or specifically designed connecting components.
It is the object of the invention to provide a frame structure of the type set out in the opening paragraph, in which in a simple manner differently designed mounting rails may be positioned rapidly and firmly in the rebates of the frame limbs.
This object is attained according to the invention in that the receiving formations pass into terminal sections bent over once or twice, forming an open dovetail groove or a closed dovetail groove for fixing the mounting rails provided with appropriate engagement formations.
The dovetail groove and the engagement formations of the mounting rails provide a simple snap on connection between the frame limb and the mounting rail. The mounting rail is just simply clipped into the rebate of the frame limb and thus tightly held on the frame limb.
Positioning of the mounting rails fixed to the frame limb is attained in a simple manner in that the mounting rails are provided with a retention pin which is inserted or adapted to be inserted into a fixation rebate of the receiving formations of the frame limb.
In this manner the fixation rebates and/or bores of the mounting rails may be oriented towards the fixation bores and/or bores of the frame limbs. This is attained solely by the correct disposition of the retention pin on the mounting rail.
According to an embodiment it is provided that the mounting rails comprise fastening limbs which bear against the receiving formations of the frame limbs, that these fastening limbs pass into the engagement formations and that the terminal sections form an obtuse angle with the first partial section in relation to the receiving formations just as the engagement formations at the fastening limbs of the mounting rails. This results in a close fit having a large abutment surface between the mounting rail and the frame limb.
According to certain embodiments, the mounting rails may be so designed that the mounting rails take the form of open hollow profile sections having a cross-section, which is substantially square, that the fastening limbs width-wise are made to match the width of the receiving formations of the frame limbs and that the profile sides of the mounting rails projecting beyond the rebate, outlined by the receiving formations, are provided with rows of fixation rebates and/or bores or that the mounting rails are designed as open hollow profile sections, that the fastening limbs width-wise are made to match the width of the receiving formations of the frame limbs, that the fastening limbs merge into profile sides outside the rebate, outlined by the receiving formations, at right angles to one another and that the said profile sides are interconnected via a connecting section following-on at an obtuse angle and provided with a row of fixation rebates. The mounting rail,
REFERENCES:
patent: 2356309 (1944-08-01), Garbe
patent: 3037590 (1962-06-01), Pavlecka
patent: 3127995 (1964-04-01), Mosinski
patent: 3143214 (1964-08-01), Moore et al.
patent: 3526074 (1970-09-01), Miller
patent: 3733755 (1973-05-01), Butler
patent: 4158998 (1979-06-01), Clement
patent: 4287994 (1981-09-01), Klein
patent: 4564111 (1986-01-01), Suttles
patent: 4643319 (1987-02-01), Debus
patent: 4782637 (1988-11-01), Eriksson
patent: 4869380 (1989-09-01), Metcalfe
patent: 4988008 (1991-01-01), Blum
patent: 5052565 (1991-10-01), Zachrei
patent: 5749476 (1998-05-01), Besserer
Benner Rolf
Reuter Wolfgang
A Phi Dieu Tran
Friedman Carl D.
Rittal--Werk Rudolf Loh GmbH & Co. KG
LandOfFree
Frame piece for a switchgear cabinet does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Frame piece for a switchgear cabinet, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Frame piece for a switchgear cabinet will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-839490