Busbar system

Details Busbar system Busbar system

1997-03-24

1998-10-06

Kincaid, Kristine L.

Electricity: conductors and insulators

Conduits, cables or conductors

Bus bars or bus ducts

H02G 304

Patent

active

058179771

DESCRIPTION:

BRIEF SUMMARY
BACKGROUND OF THE INVENTION

1. Field of the Invention
This invention relates to a busbar system with busbars, which are disposed in a trough-shaped lower fastener element extending over a length of the busbars and having a clamping leg extending vertically with respect to the fastening surface, into which adapters, having contacts, can be plugged and covered, wherein the adapters can be secured by mechanical detent connectors.
2. Description of Prior Art
A conventional busbar system is known from German Patent Reference DE 38 11 456 C2. In this case the covers and adapters are connected with the lower fastener element by mechanical connections designed as detent connectors. Since the electrical connection between the connecting terminals and the clamping legs of the busbars themselves are not locked or snapped together, the mechanical connection is crucial. With large and heavy adapters in particular, there is a danger that the mechanical connection can be loosened or released on one side.


SUMMARY OF THE INVENTION

It is one object of this invention to provide a busbar system of the conventional type but with a mechanical connection between the fastening element and the cover and the adapters placed thereon which is considerably improved.
In accordance with this invention this object is achieved with a lower fastener element having an outer wall and an inner wall on both sides, which form a longitudinally oriented detent recess. The outer walls also have an outwardly oriented longitudinal detent strap, the detent springs have the detent straps of the lateral walls of the cover and the adapter housings extend parallel with the busbars and can be locked into the longitudinally extending detent recesses. Additional elements, which can be fixed on the adapter housing, lock into the outwardly oriented longitudinal detent straps of the outer walls of the lower fastener element using detent springs to form a tilting safeguard. With the additional elements which can be fixed on the adapter housings, the outer walls are prevented from yielding toward the outside at all places where adapters are connected with the busbars. The detent springs of the cover and of the adapters locked into the longitudinally oriented detent recesses are thereby locked and these elements are connected with the lower fastener element in a secured manner with respect to tilting.
If the inner walls of the lower fastening element have longitudinal detent straps oriented toward the interior, and the holders receiving busbars are maintained in the lower fastener element by the inwardly oriented longitudinal detent straps of the inner walls, then the holders for the busbars can be locked into the lower fastener element. For axial securement it is then only necessary for the holders to be fixed in the lower fastener element by attachment screws, in an axially non-displaceable manner.
In order to assure a clear detent connection of the detent springs inserted into the longitudinally oriented detent recesses, in one embodiment the longitudinally oriented detent recesses have a stop, which limits the snap-in movement of the detent springs, which have a detent strap, of the cover and the adapter housing. In accordance with another preferred embodiment of this invention, the distribution of the detent elements and the stop in the detent recesses allows the detent straps to project into the detent recesses formed on the outer walls, and on the inner walls prevents projecting into the detent recesses, or vice versa.
In many cases an embodiment will be sufficient which is distinguished by detent springs, used as a tilting safeguard, of the additional elements which lock into the longitudinal detent strap of the outwardly oriented upper outer wall.
If the adapter is designed as an equipment adapter, a contact block which receives connecting terminals can be fixed on the adapter housing. If the contact block is closed by a cover, the latter can function as an additional element and can be used as a tilting safeguard by using a detent spring.


BRIEF DE

REFERENCES:
patent: 5274194 (1993-12-01), Belcher
patent: 5629496 (1997-05-01), Navazo

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