Electrical connectors – With insulation other than conductor sheath – Plural-contact coupling part
Patent
1996-06-14
1998-03-10
Paumen, Gary F.
Electrical connectors
With insulation other than conductor sheath
Plural-contact coupling part
439521, H01R 1352
Patent
active
057253960
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention concerns a connection device for electrically connecting the poles of accumulators.
It is a known fact that the accumulators consist of elementary batteries, the positive and negative poles of which are connected with each other in series in order, to obtain the required voltage resulting from the accumulator. In order to realize the serial connections, it is then necessary to place some connections between a positive pole and a negative pole, between two adjacent battery elements.
As it is known, the connectors are electric cables which connect adjacent poles and consist of a conductor ending with two rings through which the required connections between the poles are obtained. The electric cable and the rings are electrically insulated and for this purpose they are coated with a coating of insulating material, usually molded of plastic.
More specifically, the connector device is made of molded plastic material. An insert of the already pre-set electric cable is usually included in the mould.
One of the inconveniences of the connection devices of the known type is that, while the accumulator is operating, the electrolyte may go up through the pole in the interstices which are present between the terminal part of the pole and the connection, until it can flow out of the connection itself and overflow over the lid of the battery, thereby creating clear problems of both chemical abrasion and also possible discharges between a polarity and the other.
The proposed purpose of the present invention is to obtain a connection device which presents an insulating coating having a configuration such as to avoid or reduce to remote accidental events any chances the overflow of the electrolyte.
SUMMARY OF THE INVENTION
The purposes of the present invention and others which will be better illustrated hereinafter are achieved by a connection device for the electric connection between the poles of accumulators, comprising: conductor ring, the hole of which lodges a connecting screw having a fillister head electrically and mechanically connecting said cable with an electric pole of the accumulator; around each conductor ring and belonging to the insulating element which coats said connection device, said insulation coating presenting externally the essential shape of a truncated-cone, wherein the part having a smaller diameter is sealed with a lid and the part having a larger diameter rests on the surface of the lid of the accumulator and having a first annular wall in form of a cylinder of the same diameter as the fillister head of the connecting screw, having its base on the surface of the conductor ring in contact with the head of the connecting screw and extending itself for a certain section along the cylindrical wall of said head of said screw, said annular wall co-operating with said screw head in order to ensure a watertight seal preventing the leakage of electrolyte; characterized in that said insulation coating presents a second annular wall concentric with said first annular wall, having a larger diameter and overlapping said first annular wall, the portion of insulation coating comprised between said second and said first wall lodging in an annular notch obtained in correspondence with the bottom of the head of the connecting screw.
According to a modified embodiment of the invention, to the first annular profile are added an insulation coating and a second annular profile opposite to the first one and contrasting with the opposite flat surface of the conductor ring, so that this profile engages with the rim of the cylindrical sleeve which is present between the pole and the lid of the accumulator.
Another embodiment foresees that in addition the truncated-conic part having a larger diameter which rests on the surface of the lid presents a rim spreading outward, so as to increase the sealing effect of such a rim.
Not the last advantage is that a circular slot obtained in the thickness of the first annular profile is also foreseen. This is suited to lodge the cylindri
REFERENCES:
patent: 4420213 (1983-12-01), Julian et al.
patent: 4483910 (1984-11-01), Julian et al.
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