Electrical connectors – With insulation other than conductor sheath – Insulating body having plural mutually insulated terminals...
Patent
1997-08-05
1999-09-14
Stephan, Steven L.
Electrical connectors
With insulation other than conductor sheath
Insulating body having plural mutually insulated terminals...
439532, H01R 922
Patent
active
059513349
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
TECHNICAL FILED OF THE INVENTION
The present invention relates to a junction box for data and/or telecommunication installations. More particularly, the invention relates to such a junction box of the kind comprising a printed circuit board which is mounted to a rear supporting plate and provided with one or more terminal blocks, mounted to the circuit board on the front side thereof.
PRIOR ART
The invention has for its purpose to provide a junction box which is substantially improved in relation to previously known junction boxes of the above kind and which above all facilitates the steps of drawing in wires into the junction box and connecting them to the terminal blocks mounted to the circuit board.
SUMMARY AND OBJECTION OF THE INVENTION
The junction box according to the invention proposed for said purpose, is primarily characterized in that the circuit board is mounted at a sufficient distance in front of the supporting plate to form a free wire laying space behind the circuit board, between said board and the supporting plate, in that the supporting plate is provided with one or more wire lead-in openings which are located behind the circuit board, and in that the circuit board is provided with one or more wire lead-in openings which are formed by cut-outs in the circuit board, extending into said board from edge portions thereof, the wire lead-in openings in the supporting plate being located in displaced positions in the supporting plate in relation to the wire lead-in openings in the circuit board and at a distance from the latter openings.
The above design of the junction box according to the invention makes it possible to simplify to a great extent the required operations to be effected by an installer in connection with drawing in wires into the junction box and connecting conductors thereof to terminals forming part of the terminal blocks mounted to the circuit board. Moreover, the invention also makes it possible to achieve a satisfactory holding of the wires in the junction box without requiring any special means for relieving them from outer pulling forces.
According to the invention, the wire lead-in openings in the supporting plate may preferably be substantially larger than the wire lead-in openings in the circuit board. Such a design of the wire lead-in openings makes it possible to permit several wires intended to be connected to the circuit board, for instance an incoming wire and one or more outgoing wires, to extend through one and the same opening in the supporting plate, while the individual conductors of each wire may extend from the rear side of the circuit board to the front side thereof through one or more wire lead-in openings in the circuit board for each wire.
In order to facilitate the installation, the space between the circuit board and the supporting plate may suitably be laterally open at least within the region of each wire lead-in opening provided in the circuit board. In this case, the junction box may comprise a cover which is adapted to be releasably mounted in front of the circuit board and provided with side walls, extending in a rearward direction from a front wall of the cover and arranged to cover said space laterally.
According to the invention, the circuit board may comprise a plurality of circuit board modules, located in side-by-side relationship and preferably formed in one single piece, and at least some of which have terminal blocks mounted thereto and wire lead-in openings provided therein. The supporting plate may then suitably be provided with one or more wire leadin openings behind each circuit board module provided with terminal blocks and wire lead-in openings. Such a design of the junction box results in each wire intended to be connected to a certain circuit board module being inserted through a wire lead-in opening in the supporting plate located behind said module. Moreover, the two circuit board modules within each pair of adjacent circuit board modules having terminal blocks mounted thereto may be provid
REFERENCES:
patent: D299492 (1989-01-01), Gregon
patent: 3777223 (1973-12-01), Chandler et al.
patent: 3831128 (1974-08-01), Paluch
patent: 4595799 (1986-06-01), Krob et al.
patent: 4767338 (1988-08-01), Dennis et al.
patent: 5779504 (1998-07-01), Dominiak et al.
Duverne J. F.
Fatum Produkt AB
Stephan Steven L.
LandOfFree
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