Supports – Pipe or cable – Brackets
Patent
1997-03-20
1998-08-18
Brittain, James R.
Supports
Pipe or cable
Brackets
H02B 1052, H02B 120
Patent
active
057948950
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to a device for securing and guiding cables and conduits in switchgear cabinets, having a securing bracket which is releasably connected with a support, a plate or rail of the switchgear cabinet by a fastening plate. For receiving the cables and conduits, the device has a bracket section which projects away from the fastening plate and has an angled end section, which is overlapped by a covering section that projects away from the fastening plate while leaving an insertion opening free.
2. Description of Prior Art
A device of this type is known from PCT International Application WO 90/05400. The securing bracket consists of an angled section of round wire which is connected with an end of a fastening plate. At one end the fastening plate is bent away to form a covering section and overlaps the end section of the section of bent wire, while leaving the insertion opening free. A device of this type is not only expensive to produce, but because of the screw connection needed for fastening the fastening plate, also requires a considerable assembly effort in the switchgear cabinet, in particular, if an installation path over a plurality of devices is required.
A device in accordance with Austrian Patent Reference AT 269 978, which uses cable conduits and which is also fixed on a wall by screw connections, also has the same disadvantages.
SUMMARY OF THE INVENTION
It is one object of this invention to produce a device of the species mentioned at the outset, which includes parts which are simple and cost-efficient to manufacture and can be secured in a simple manner in the switchgear cabinet.
In accordance with this invention, this object is attained with an arresting bracket used as the fastening means, which overlaps the fastening plate of the securing bracket. Lateral legs of the arresting bracket which are embodied as arresting legs can be secured in correspondingly spaced and dimensioned arresting slits of the support, the plate or the rail.
The securing bracket can be produced as a plastic injection-molded element or as a stamped, angled element made of metal, and the arresting bracket as an inexpensive plastic injection-molded element. The arresting bracket is placed on the fastening plate of the securing bracket and, while fixing the securing bracket in place, its lateral legs are arrested in the slits of the support, the plate or the rail. This only requires simple manipulation. The supports, plates or rails having slits can be produced just as simply as supports, plates or rails having bores. But the assembly outlay for installing the devices in the switchgear cabinet is considerably reduced.
To accomplish arresting of the arresting bracket in the slits of rigid supports, plates or rails, in one embodiment of this invention, the arresting bracket has a resilient plastic material, and the clear space between the lateral legs of the arresting bracket and the distance of the slits in the support, the plate or the rail is matched to the width of the fastening plate of the securing bracket.
In this case the layout is such that the lateral legs of the arresting bracket taper in a direction of the free ends, while their clearance is increased in order to obtain a deflection of the lateral legs of the arresting bracket, for making the arrested connections.
Arresting the arresting bracket is simplified because the arresting shoulders rise at a shallow angle from the free ends of the lateral legs of the arresting bracket and terminate in a steeply dropping section.
An arrested connection free of play is achieved by the steeply dropping sections of the arresting shoulders of the lateral legs of the arresting bracket having a distance with respect to shoulders on the inside of the lateral legs which is oriented parallel to the direction in which the arresting bracket is pushed on and which is matched to the thickness of the support, the plate or the rail in an area of the slits plus a thickness of the fastening plate of the securing bra
REFERENCES:
patent: 4645154 (1987-02-01), Bly
patent: 5472159 (1995-12-01), Kuffel
Besserer Horst
Deusing Hans-Ulrich
Brittain James R.
Rittal--Werk Rudolf Loh GmbH & Co. KG
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