Geometrical instruments
Patent
1984-01-19
1986-05-13
Bilinsky, Z. R.
Geometrical instruments
339117P, 339126RS, 339255R, H01R 1362
Patent
active
045882479
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to improvements to electric connectors, intended particularly to be used in a liquid medium, formed from two connector elements removably coupable within the liquid medium and having respective electric contacts, the connector elements comprising respectively a cylindrical case supporting therein an insulating body which encloses said contacts.
The insulating body disposed inside the cylindrical case of each connector element is generally made from a relatively resilient synthetic material, such as an elastomer, which is electrically insulating: this insulating body is then adapted for mechanically supporting the electric contacts of said connector element while providing mutual electrical insulation of these contacts.
Now, the elastomers usually used for the application envisaged are rapidly damaged when they are held in contact with liquids, and particularly with sea water; the result is an impairment of the resistivity of the insulating body and a reduction of the between contact insulation resulting in electric leaks.
The invention has then essentially as its aim to remedy this disadvantage and to provide an electric connector which satisfies better than in the past the different requirements of practice, in particular in so far as its use in a liquid medium is concerned more especially in an under sea medium.
To this end, it is provided in accordance with the invention that, in an electric connector of the above mentioned kind, a rigid cylindrical sleeve surrounds at least the front part of each insulated body, that the two sleeves belonging respectively to the two connector elements have substantially the same transverse dimensions, more especially the same diameter, and are positioned axially on the respective insulating bodies so that, in the connection position of the two connector elements, they are substantially end to end, that insulating means are provided so that the mutual electric insulation of the contacts is provided during connection of the two connector elements, and that one of the connector elements (first connector element) has a ring external to the corresponding sleeve and axially movable, under the action of control means, towards the other connector element (second connector element) during the operation for coupling the two connector elements together, this ring being provided in its inner face with two annular seals spaced apart axially from each other by a distance such that, and the axial travel of the ring being such that, when the connector elements are not coupled together and when the ring is retracted into the first connector element, the annular seals bear on the corresponding sleeve whereas, when the two connector elements are coupled together and when the ring is in the projecting position, said ring then surrounds a front axial portion of the sleeve of the second connector element and the two annular seals bear respectively against the two rigid sleeves.
Thus, when the two connector elements are coupled together, the two annular seals sealingly surround the two rigid sleeves while being situated on each side of the cooperating front faces of the two connector elements. Thus, these seals provide sealing insulation of these cooperating front faces (faces whch are formed essentially by the front faces of the respective insulating bodies of the two connector elements) with respect to the remaining parts of the connector, which are in general bathed in the surrounding liquid medium. In other words, these seals prevent the insulating bodies from being in permanent contact with the surrounding liquid when the two connector elements are coupled to one another and they contribute to maintaining the electrically insulating properties of said bodies.
It is more particularly advantageous to associate with the preceding arrangements, complementary arrangements consisting in said insulating means comprising, in one of the connector elements, truncated cone shaped bosses provided on the front face of the insulating body and at the front end of which ap
REFERENCES:
patent: 3605069 (1971-09-01), Dorrell
patent: 4073562 (1978-02-01), Karlskind
patent: 4094567 (1978-06-01), Karcher et al.
patent: 4188084 (1980-02-01), Buresi et al.
patent: 4488765 (1984-12-01), Erbe
Grappe Rene
Martin Pascal
Bilinsky Z. R.
Pirlot David L.
Souriau & C.
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