Electrical connectors – With vitreous-type envelope – Having bayonet-coupling contact
Patent
1992-01-28
1994-11-29
Nguyen, Khiem
Electrical connectors
With vitreous-type envelope
Having bayonet-coupling contact
439471, H01R 903
Patent
active
053685040
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
Connectors that are attached to shielded cables generally require a means for securely connecting the cable shield to the conductive housing of the connector. Such connection to the shield must occur while one or more central conductors of the cable are connected to contacts of the connector. An emerging use for such connectors is for power cables that can supply current to electric vehicles to recharge their batteries. One current approach uses three separate shielded cables extending to a connector, with the shield of each cable connected to the housing of the connector and with a single central conductor of each cable connected to a contact of the connector. The connector must be designed for mass production at low cost, while reliably connecting to each cable in a manner that facilitate field repairs.
SUMMARY OF THE INVENTION
In accordance with one embodiment of the present invention, an electrical connector is provided for attachment to a shielded cable, which assures reliable electrical connection between the cable shield and the connector housing in a simple, low cost, and easily reparable construction. A ring lies under a portion of the cable shielding to provide a bulged shield portion that can be reliably connected to the housing. The bulged shield portion is pressed against an electrically conductive cable-receiving surface formed on the housing, to provide high pressure for a lower resistance connection.
The ring can be formed of elastomeric material. The cable and other similar cables can be pressed against corresponding cable-receiving surfaces of a retainer, and a tie can surround the cables and retainer to press the bulged portions of all cables securely towards corresponding conductive cable-receiving surfaces. The retainer has arms between cable-receiving surfaces, and the arms have slots that receive the tie to prevent it from moving axially.
The novel features of the invention are set forth with particularity in the appended claims. The invention will be best understood from the following description when read in conjunction with the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is an isometric view of a connector system constructed in accordance with the present invention, showing receptacle and plug connectors prior to mating.
FIG. 2 is a partial sectional view of the connector system of FIG. 1, with the connectors fully mated.
FIG. 3 is a partial sectional view of a prepared cable of the connector system of FIGS. 1 and 2.
FIG. 4 is a partial rear isometric view of the receptacle connector housing of the connector system of FIGS. 1 and 2.
FIG. 5 is a partial sectional view of the receptacle connector of FIG. 1.
FIG. 6 is a rear end view of the housing of FIG. 4, and showing, in phantom lines, the fully installed cables.
FIG. 7 is a partial sectional view taken on the line 7--7 of FIG. 5.
FIG. 8 is a sectional rear end view of the plug connector of FIG. 2, taken on the line 8--8 of FIG. 2.
FIG. 9 is a view similar to that of FIG. 8, but showing a modified cable.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
FIG. 1 illustrates a connector system 10 which includes a receptacle connector 12 that mates with a plug connector 14. The particular connector 12 is designed to mount on an electrically energized vehicle to receive electrical power for recharging batteries of the vehicle. The receptacle connector 12 is designed to receive power from a utility line to supply power for recharging the batteries. Three shielded cables 20, 22, 24 extend in a rearward direction R from a rear end portion 26 of the receptacle connector, with conductors of the cables connected to corresponding pin contacts 30 at the front end portion 32 of the connector. The pin contacts are designed to mate with corresponding socket contacts 34 of the plug connector, which has three shielded cables 36 extending from its rear end.
As shown in FIG. 3, each shielded cable such as 20 includes a central cable conductor 40, an insulation 42 extending around most of the length of
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Finona Michael S.
Muzslay Steven Z.
ITT Corporation
Nguyen Khiem
Peterson Thomas L.
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