Electricity: conductors and insulators – Boxes and housings – Hermetic sealed envelope type
Patent
1997-02-04
1998-09-01
Kincaid, Kristine L.
Electricity: conductors and insulators
Boxes and housings
Hermetic sealed envelope type
361605, 361692, 3122231, 312100, 312327, H02G 308, H02B 500
Patent
active
058013318
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to a switchgear cabinet with a cabinet door and a cover fastened on a top of the switchgear cabinet.
2. Description of Prior Art
In connection with known switchgear cabinets of a similar type, the cover is primarily used for covering an air-conditioning unit or the like, which is fastened on the switchgear cabinet. The cover is maintained in a locked position with quick-release closures, wherein the components of the quick-release closures are fastened to the switchgear cabinet and the cover.
SUMMARY OF THE INVENTION
It is one object of this invention to produce a switchgear cabinet of a type mentioned above, wherein the cover can be attached on the switchgear cabinet in the simplest manner.
In accordance with this invention the above object and others are attained with a cover that has a lower element, connected with the top of the switchgear cabinet, and of a roof element covering the lower element. The roof element is connected on a back with the lower element by plug or hinge connections with the lower element. The roof element has holding brackets on the front which, in the closed position of the roof element and the cabinet door, are overlapped and held by a bevel of the cabinet door.
With the cabinet door open, the cover which has the lower element and the roof element can be opened. The roof element can be swung or rotated upward by the plug or hinge connections on the back. If the roof element is moved into the closed position on the lower element, the roof element is maintained in the closed position by the holding brackets when the cabinet door is closed. The holding brackets of the closed roof element project into a pivot area of the cabinet door in such a way that the bevel of the latter extends over the holding brackets. In the case of plug connectors on the back, the roof part can also easily be released from the bottom element when the cabinet door is open.
In accordance with one embodiment of this invention, the lower element is designed as a frame and has ventilating slits in the lateral walls. In this embodiment the cover advantageously acts as the receptacle for an air-conditioning unit or the like.
If in the closed position the roof element covers with spacing the lateral sides of the lower element with its lateral sides, ventilation of the cover is not hampered even in the closed position of the roof element.
In order to easily remove water which may enter the roof element, in a further embodiment of this invention, the roof element has roof sections which are inclined toward the front and toward the back.
The lower element is designed in such a way that the lower element has beveled bars at least at the front and back lateral walls, which are used for the support of the roof element and for fastening the lower element on the top of the switchgear cabinet.
In accordance with another embodiment of this invention, in the closed position the lateral sidewalls of the roof element partially cover the lateral walls of the switchgear cabinet in a spaced manner in order to cover the lateral transition between the switchgear cabinet and the cover.
BRIEF DESCRIPTION OF THE DRAWINGS
This invention will be explained in detail using an exemplary embodiment represented in the drawings wherein:
FIG. 1 is a top perspective view of a switchgear cabinet with a cover built thereon; and
FIG. 2 is a perspective partial sectional view showing cooperation of the cabinet door and the roof element for fixing the closed position of the cover.
DESCRIPTION OF PREFERRED EMBODIMENTS
The top of a switchgear cabinet 10 is shown in FIG. 1, having sides covered by wall elements. The top is covered by means of a cover wall if a cover 14 placed on it is only used as a receptacle for accessories or the like. But if the cover 14 is used for housing an air-conditioning unit or the like, the cover wall of the switchgear cabinet 10 has openings, through which air can be aspirated from the switchgear cabinet 10 and cooling air can be suppli
REFERENCES:
patent: 4179169 (1979-12-01), Daniels et al.
patent: 4717216 (1988-01-01), Hornak
patent: 4821143 (1989-04-01), Holmgren et al.
Kincaid Kristine L.
Ngo Hung V.
Rittal--Werk Rudolf Loh GmbH & Co. KG
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