Electrical connectors – Uninterrupted support rail or uninterrupted contact
Patent
1997-05-27
1999-03-23
Abrams, Neil
Electrical connectors
Uninterrupted support rail or uninterrupted contact
439811, H01R 2500
Patent
active
058850945
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to a connecting terminal for a busbar of a busbar system, wherein the busbar has a cross section with at least three sides, wherein longitudinally oriented undercut receiving grooves are cut into exteriors of the busbar.
2. Description of Prior Art
Busbars for high currents require a large cross section which complicates the attachment of branching lines. To make this easier, multi-sided busbars have already been considered, which have longitudinally oriented undercut receiving grooves in their exteriors.
SUMMARY OF THE INVENTION
It is one object of this invention to provide a connecting terminal of the type previously mentioned, which can be easily attached to a busbar and which provides a clear connection of a conductor which is attached to the busbar.
In accordance with this invention this object is attained with a connecting terminal having two terminal elements, which can be attached from both sides to the busbar and can be connected with each other, and which can be introduced with holding elements into receivers of the busbar and can be fixed in place transversely to the busbar. The terminal elements form a terminal chamber which extends transversely over an exterior of the busbar. Fastening screws can be positioned in the bars of the terminal elements which face away from the exterior of the busbar, which wedge clamping elements introduced into the terminal chamber against a conductor introduced into the terminal chamber, while connecting it with the exterior of the busbar.
The two terminal elements are placed from both sides against the busbar and introduced by holding elements into receivers and maintained transversely to the busbar. The two terminal elements are connected with each other to form a unit, which is positively maintained on the busbar and at most can be displaced in a longitudinal direction. The conductor to be connected, for example a feed conductor of a large cross section, is wedged with the aid of the clamping elements and the fastening screws and clamped to the busbar. Depending on the use of one or two clamping elements, the conductor is connected directly or by way of a clamping element with the exterior of the busbar. When the fastening screws are tightened, the connecting terminal is also fixed in place, axially and non-displaceably, on the busbar.
In accordance with one embodiment of this invention, the introduction of the holding elements of the terminal elements into the undercut receivers of the busbar is simplified because the receiving grooves are formed as T-grooves. The terminal elements support holding elements, which have holding shoulders which grip behind the T-groove only on the side facing the occupied exterior of the busbar.
In this case and with an appropriate design the introduction can also take place transversely to the busbar, if a corresponding transverse amount of play is provided between the receiver and the holding element.
The connection of the terminal elements is easily achieved with terminal elements that can be connected with each other in the area of the connecting plane by means of T-shaped or dovetailed connecting elements, wherein the direction of connection extends parallel with the longitudinal axis of the busbar. This can occur with an appropriate oppositely directed displacement of the terminal elements on the busbar.
In accordance with one preferred embodiment of this invention, the terminal elements are embodied in a mirror-reversed manner and in the connecting area only have the connecting elements which are matched to each other.
So that the exterior of the busbar is easily accessible for the connection with a clamping element or the conductor to be connected, in one embodiment the terminal chamber facing the busbar has sides which terminate flush with the exterior of the busbar, or the busbar projects into the terminal chamber with its exterior.
If in accordance with a further embodiment the terminal chamber is bordered by lateral legs of the terminal e
Abrams Neil
Byrd Eugene G.
Rittal--Werk Rudolf Loh GmbH & Co. KG
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