Metal working – Method of mechanical manufacture – Electrical device making
Patent
1996-08-07
1998-06-09
Arbes, Carl J.
Metal working
Method of mechanical manufacture
Electrical device making
361752, 361829, H01R 4300
Patent
active
057617970
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to a process for the erection of a switch cabinet from a framework comprising frame limbs, at least one cabinet door, and wall elements, and for the installation and wiring of fittings to be accommodated in the switch cabinet such as a mounting plate, mounting rails, module carriers, installation instruments and the like.
2. Description of the Prior Art
As a rule, switch cabinets are assembled at, factory and taken to the site of use as a finished product where the user installs the services. In such cases, it is not unusual for the manufacturer to equip the switch cabinet with readily installed mounting means and the like such as current distribution components. However, the final equipping of the switch cabinet takes place only at the site of use by the user.
Construction modules for switch cabinets are also known which can be delivered in a space-saving manner. At the site of use, the switch cabinet is first assembled by the user. After the erection of the switch cabinet, the installation of the services is carrier out.
In any event, the installation and wiring of the services in such a complete switch cabinet is not easy because the accessibility of the space enclosed by the switch cabinet is often unnecessarily impeded or additional means such as pivoting frames are necessary in order to render the installed units accessible.
SUMMARY OF THE INVENTION
It is an object of this invention to provide an apparatus of the type herein referred to in which the components of the switch cabinet are delivered in a space-saving manner and can be so assembled at the site of use such that the installation of the services is possible in a simple manner with good accessibility.
This and other object are attained the process of this invention wherein from four frame limbs, a basic frame structure is assembled or a pre-manufactured frame is used, assembled from four frame limbs. At least at the bottom corners of this basic frame, additional frame limbs vertical thereto are fitted, forming a partial frame structure. The services are built into this partial frame structure and wired therein. The partial frame structure is then completed as a framework and the cabinet door and the wall elements are fitted to the framework having the services installed therein.
It is possible to commence the installation of services at the site of use even when only the partial frame structure has been assembled. The lower frame limbs projecting at right angles from the base frame permit the partial frame structure to be placed upright. The installation and wiring of the services is simple because the open partial frame structure permits access from all sides to the actual and still open interior of the switch cabinet. Finally, the cabinet door and the wall elements are fitted to the completed frame structure.
In according with one preferred embodiment, the partial frame structure is completed to form the complete framework using a further preferably premanufactured frame.
In order to complete the switch cabinet, the lower side of the frame structure is connected to a pedestal and the underside of the frame structure is closed by sectional bottom panels provided with cable inlets.
When installing the services in the partial frame structure in accordance with one embodiment of this invention, a mounting panel fitted with an installation apparatus is inserted into the partial frame structure and preferably connected to the base frame. In that case, the fitting of services and wiring to the mounting panel may then be carried out outside of the partial frame structure.
The installation of installation apparatus and the like is further facilitated by mounting rails which are fitted to the partial frame structure.
In accordance with one embodiment, it is also possible to fit into and wire in the partial frame structure module carriers into which plug-in units may subsequently be fitted.
BRIEF DESCRIPTION OF THE DRAWINGS
This invention will be better understood from
REFERENCES:
patent: 3689128 (1972-09-01), Andreini et al.
patent: 3755712 (1973-08-01), Yoshii et al.
patent: 4040694 (1977-08-01), Lascarrou
patent: 4643319 (1987-02-01), Debus
patent: 5388903 (1995-02-01), Jones et al.
patent: 5488543 (1996-01-01), Mazura et al.
Machine Design., Bd. 58, Nr. 26, Nov. 1986, Cleveland US, Sieten 101-106, Paul J. Dvorak, "Modular enclosures beyond the basic box", siehe das ganze Dokument.
Besserer Horst
Munch Udo
Neuhof Markus
Nicolai Walter
Pawlowski Adam
Arbes Carl J.
Rittal--Werk Rudolf Loh GmbH & Co. KG
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