Supports: cabinet structure – Knockdown or setup type
Patent
1996-11-20
1999-05-04
Cuomo, Peter M.
Supports: cabinet structure
Knockdown or setup type
3122654, 211 26, 49397, A47B 4300
Patent
active
058995455
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to a rack for a switchgear cabinet having horizontal and vertical rack legs and depth struts, and open sides that can be closed by wall elements and at least one door.
2. Description of Prior Art
As a rule, in known racks two profiled sides of the rack legs which are located perpendicularly with respect to each other form outsides of the rack and an outer edge thereof. Special hinge elements must be installed on the vertical rack legs for hinging the door. Additionally, separate locking elements must be installed on the locking side of the door. In the process, the opening side of the door is often fixed on the rack and cannot be changed at the operating site of the switchgear cabinet. In addition, an open side of the rack which is to be closed by the door is also predetermined as a rule.
SUMMARY OF THE INVENTION
In connection with a rack of the general type mentioned above, it is one object of this invention to fix a door on the rack without additional hinge and locking elements, wherein the hinge and closing sides of the door can be easily reversed and the door intended for one side of the rack can also be attached to the opposite side of the rack.
This object is attained in accordance with this invention by having depth struts on the front and/or back of the rack with extensions projecting past the horizontal and vertical rack legs, that have vertically oriented receivers for hinge bolts or locking bolts of the door.
With this layout of the depth struts it is possible to attach a door to the front and/or back of the rack, wherein the door can be opened toward the left or the right. The hinge bolts of the locking side are received in the same way as the locking bolts by the receivers of the extensions, so that the opening side can be arbitrarily selected. With this embodiment the depth struts assume the functions of the hinge and locking elements which are additionally attached in the known racks.
In this embodiment, the extensions of the depth struts can be made of one piece with the depth struts. The extensions can also be embodied as separate corner elements which are connected with the adjoining horizontal and vertical rack legs and the associated depth struts.
If, as in another embodiment, the extension has a horizontally oriented receiver, then uniformly embodied depth struts or extensions can be used at all side edges or corners of the rack.
In one embodiment of the door for attachment to the rack, the door has on the inside in the area of the corners bearing blocks, which support a continuous, vertical guide, partially provided with an interior thread, for a hinge bolt or a locking bolt.
In this case uniformly embodied bearing blocks are attached to the door such that on the hinge side of the door the interior threads face away from the associated horizontal side of the door, while on the locking side of the door the interior threads face corresponding horizontal sides of the door.
A further simplification can be achieved on the locking side of the door if the locking bolts are embodied as sliding rods of a sliding rod locking device.
A definite guiding of the sliding rods in the bearing blocks is achieved by the diameter of the sliding rods being matched to the diameter of the guides in the bearing blocks.
So that the hinge bolts can be screwed into the bearing blocks without affecting this guide, the interior thread of the bearing blocks has an interior diameter which is greater than the diameter of the guide and the hinge bolts have appropriately matched guide sections and thread elements.
If only one side of the rack is to be closed by a door, it is possible for separate corner elements, without extensions, to end flush with adjoining horizontal and vertical rack legs and to be attached to the front or back of the rack. Depth struts may be provided with an extension at only one end. The rack then has projecting extensions for attaching a door on only one side.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention wi
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patent: 606724 (1898-07-01), Lucas
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patent: 4412708 (1983-11-01), Palka
patent: 4988008 (1991-01-01), Blum et al.
patent: 5165770 (1992-11-01), Hahn
patent: 5228762 (1993-07-01), Mascrier
patent: 5275296 (1994-01-01), Zachrai
patent: 5380083 (1995-01-01), Jones et al.
Besserer Horst
Hartel Marc
Zachrai Jurgen
Cuomo Peter M.
Hansen James O.
Rittal--Werk Rudolf Loh GmbH & Co. KG
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