Supports: cabinet structure – With inkwell
Patent
1999-05-14
2000-12-26
Cuomo, Peter M.
Supports: cabinet structure
With inkwell
3122655, A47G 2900
Patent
active
061647373
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to a switching cabinet with a rack, having a base made of length and depth struts with connected vertical frame pieces, where the vertical frame pieces are inserted into a cavity formed by the ends of the length and depth struts and are welded with the base to form a corner connector.
2. Description of Prior Art
A switching cabinet of this kind is known, for example, from German Patent Reference DE 19 04 558. In switching cabinets of this kind a separate corner connector is omitted, so that the single vertical frame leg and length or depth struts are welded directly to each other. The length and the depth struts are designed as angled profiles. The depth strut is butt welded by its planar front side to a leg of the length strut.
The vertical frame leg designed as angle profile and likewise having two legs can then be tied to the formed base. In this case, one of the legs has a front release. Thus, of the second leg there remains a front gluing edge, to which the length strut of the base will rest on its front side.
With this type of corner connection it is difficult to align the vertical frame leg to the base so that it is easy and accurate to weld, and so that it will be precisely positioned. For this reason PCT International Publication WO 90/15464 teaches an additional element secured to the depth strut, so that the length strut of the vertical frame leg can be positioned. Now this corner connection requires an additional part, which requires a correspondingly greater expense.
SUMMARY OF THE INVENTION
It is one object of this invention to create a switching cabinet of the type described above, in which a corner connection to the rack is simply designed and provides a precise alignment of the vertical frame leg.
According to this invention the vertical frame pieces have centering pieces aligned with stops of the length and depth struts. The vertical frame leg can be moved into position along the stops. The centering pieces together with the stops form a forced guide for the vertical frame leg which keeps the position of the joined parts upright during the welding process. By this simple measure, additional corner connector elements to align the vertical frame leg can be omitted so that the rack is of simple design.
According to one embodiment of this invention, the centering surfaces of the vertical frame leg are aligned perpendicular to the associated side surface of the rack, the stops are of web-like design and are positioned at an angle of 90.degree. to each other and form an open cavity.
The vertical frame leg can be inserted into the cavity from the outside into the base. The web-like stops will then rest against the centering pieces.
If a web is located on the length and depth struts in a vertical direction at a distance from the stops, so that the vertical frame leg is braced against its front abutting end, and if the vertical frame leg is welded at an abutting end and at centering pieces with the length and depth struts, then a stable anchoring of the vertical frame leg is possible.
Because the abutting end is located at a distance from the stops, high torque can be applied to the vertical frame leg.
A switching cabinet according to this invention has the vertical frame leg profiled at an outward pointing side in a corner area, and the webs have a recess adapted to this profiling.
Very different kinds of attachments can be braced in the profile of the frame leg. For example, hinge elements or closing units for a door can be used, or angle-bends of connected side walls can be used. Interfering material protrusions, which would be a possible hazard, are avoided by the adapted recesses in the length or depth struts. Furthermore, the vertical frame leg can be prepositioned to the adapted recess so that it has a precise alignment.
According to one preferred embodiment of this invention, side parts of the vertical frame leg are connected to the centering pieces, and the side parts in the contact web extend into the contac
REFERENCES:
patent: 3265419 (1966-08-01), Durnbaugh et al.
patent: 4643319 (1987-02-01), Debus et al.
patent: 5806945 (1998-09-01), Anderson et al.
Benner Rolf
Kohler Martina
Munch Udo
Reuter Wolfgang
Anderson Jerry
Cuomo Peter M.
Rittal--Werk Rudolf Loh GmbH & Co. KG
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