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Electrical plug-and-socket connector

  • US 4,531,796 A
  • Filed: 05/10/1983
  • Issued: 07/30/1985
  • Est. Priority Date: 05/18/1982
  • Status: Expired due to Fees
First Claim
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1. Weatherproof, dirtproof and shakeproof electrical connector assembly comprising a rigid cup-shaped first connector body (1) of insulating material having a cup-bottom portion in which prong connector elements (3) are set which have forward extremities and a hollow cylindrical portion (4) which has an exterior, has an annular extremity (8) and encircles a space into which said prong elements extend, and a second rigid connector body (10) having a front portion for facing said first connector body and a rear portion for leading out wires and having socket connector elements (12) affixed to ends of wires (11) inserted through said rear portion of said connector body, a socket-confining casing plug (13) having exterior and interior surfaces, a compressible seal plug (22) for said wires, through which said wires pass, a stiff pressure washer (25) and a capnut (27, 31) provided with an interior surface having screw threads, through which capnut said wires pass, said capnut being mounted for pressing said washer, seal plug, casing plug and second connector body into a rigid block and thereby sealing said wires pressure tight in said casing plug, said assembly further comprising:

  • a rim-like extension (17) of said casing plug (13) extending to an annular rear extremity thereof and having an external surface and a frustoconical internal surface (20) for seating said seal plug (22), said seal plug having a complementary frustoconical external surface therefor, said pressure washer (25) fitting against an annular shoulder (26) of said seal plug for forcing said seal plug into said rim-like extension (17) of said casing plug (13) and also being stoppable by the rear extremity of said rim-like extension of said casing plug (13), said capnut (27,

         31) being tightenable on the exterior surface of said casing plug (13) by rotary motion for pressing said pressure washer (25) against said seal plug (22);

    a flange (16) on said casing plug (13), having a front surface facing the extremity (8) of said cylindrical portion (4) of said first connector body (1) and having a rear surface, and a forward extension (15) of said casing plug, extending forward beyond said flange and beyond the forward extremities of said socket elements (12), fitting loosely within said cylindrical portion (4) of said first connector body (1), having cavities (14) which laterally surround said respective socket elements (12) at an annular gap spacing therefrom and having an external surface;

    a seal ring 9 having its full axial dimension interposed between said casing plug flange (16) and the extremity (8) of said cylindrical portion (4) of said first connector body (1) for compression therebetween, said seal ring (9) fitting also about the external surface of said casing plug forward extension (15) for limiting inward expansion of said seal ring, andsleeve-like securing means (40,

         43) tightenable on the exterior of said cylindrical portion (4) of said first connector body (1) by rotary motion and having inturned grasping means (41,

         44) reaching around said flange (16) of said casing plug (13) for securing together said first (1) and second (10) connector bodies while compressing said seal ring (9).

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