Databus coupler electrical connector

• US 4,720,155 A
• Filed: 04/04/1986
• Issued: 01/19/1988
• Est. Priority Date: 04/04/1986
• Status: Expired due to Term

• Current Assignee: Amphenol Corporation
• Original Assignee: Amphenol Corporation
• Inventors: Davis, Alan L., Schildkraut, Alan L.
• Primary Examiner(s): MCQUADE, JOHN P
• Application Number:
  US06/848,110
• Time in Patent Office: 655 Days
• Field of Search: 339/14 R, 339/143 R, 339/147 R, 339/147 P
• US Class Current: 439/108
• CPC Class Codes: H05K 9/0007 Casings standardised racks H05K9/0062

Abstract

An electronic circuit component and a plurality of twinax contacts are connected together in piggy-back fashion and enclosed within a metallic frame with respective signal paths in the component and contacts being interconnected such that an apertured ground plate completes a 360° electrically conductive seal around the contacts and grounds the contacts in common to the metallic frame. The plate also prevents axial leakage of electromagnetic energy from interrupting the electronic component.

Claims

1. A databus coupler comprising an electrically conductive enclosure which has an opening leading to a closed chamber, a dielectric insert having a rear face disposed in said opening and including an array of axial passages each extending through the insert, an electronic component completely enclosed by said chamber and including a plurality of circuit paths each for transmitting a communication signal, a matable terminal mounted in each said passage each terminal including an electrically conductive outer conductor encircling a pair of electrically conductive inner conductors, each said conductor having a rearward end portion extending rearwardly of said rear face and into said chamber, conducting means for electrically connecting the rearward end portion of one respective inner conductor with one respective circuit path, and grounding means engaging the rearward end portion of the outer conductors for electrically sealing the chamber and grounding the coupler to prevent electromagnetic frequency interference from entering or leaving the chamber, the grounding means completing a common electrical circuit path between the outer conductors of all said terminals, said enclosure, and the electronic component whereby to protect the inner conductors from electromagnetic frequency interference.

2. The databus coupler as recited in claim 1 wherein said grounding means includes an electrically conductive plate provided with a plurality of axially extending upsets each registering with one said passage and terminating in a constricted aperture for receiving the rearward end portion of the terminal associated with the passage, each upset being adapted to interference fit around the outer conductor whereby to complete a 360°

electrically conductive seal about the terminal.

3. The databus coupler as recited in claim 2 wherein the enclosure comprises a shell and a chambered housing, the shell including a matable forward portion and a connectable rearward portion, the housing having a forward end portion connected to the connectable rearward portion of the shell in piggy-back relation and a rearward portion defining an endwall closing the chamber, and the grounding plate is captivated axially between the shell and the housing, said conducting means, said circuit component, and the rearward end portions of said terminals being disposed in the chamber axially rearward of the grounding plate.

4. The databus coupler as recited in claim 2 wherein said conducting means comprises a plurality of insulated wires each having one end terminated to one respective inner conductor and the other end terminated to one circuit path on the electrical component, the outer conductor defining a cylindrical sleeve concentrically encircling the inner conductors.

5. The databus coupler as recited in claim 4 wherein said rearward end portions and the respective terminations to said wires are disposed reawardly of said plate, and including means comprised of a dielectric material for embedding the terminated end portions and the circuit component in the chamber.

6. The databus coupler as recited in claim 2 wherein a conductive bracket is in electrical circuit relation to said plate and a circuit path on said electrical component to complete a ground path therebetween.

7. The databus coupler as recited in claim 6 wherein said plate includes at least three upsets having corresponding apertures two thereof being dedicated to defining an input and an output to the coupler and the third being dedicated to defining a databus branch point.

8. In combination, an electrically conductive shell and an electrical circuit component, said shell including a plurality of electrical contacts, mounting means for mounting the contacts in the shell, grounding means for establishing an electrical ground path between each said contact and the shell, and said circuit component including a plurality of electrical signal paths each being connected electrically and mechanically to respective of said contacts, the improvement characterized by said circuit component and said shell being disposed along a common axis and connected in piggy-back relation, the contacts each being mounted such that its axis is parallel to the common axis and each including an outer conductor encircling a pair of inner conductors, and conductive sealing means for completing an electrically conductive seal between the shell, the contacts, and said circuit component, said sealing means comprising an electrically conductive housing enclosing the circuit component and in electrical circuit path relation to the shell, and a flat plate of electrically conductive material completing a 360°

electrically conductive seal between its outer margin, the housing, and the shell, said plate including a plurality of axial upsets each forming a radially constricted aperture for receiving one respective contact therethrough and completing a 360°

electrically conductive seal around the outer periphery thereof.

9. The invention as recited in claim 8 wherein a conductive cable electrically interconnects respective ones of the circuit paths with ones of the inner conductors, said cable terminations being axially rearward of said plate.