Connector filter assembly

• US 4,079,343 A
• Filed: 10/21/1976
• Issued: 03/14/1978
• Est. Priority Date: 01/08/1975
• Status: Expired due to Term

• Current Assignee: Amphenol Corporation
• Original Assignee: Bunker Ramo Corporation
• Inventors: Nijman, John P.
• Primary Examiner(s): Borchelt, Archie R.
• Assistant Examiner(s): Nussbaum, Marvin
• Application Number:
  US05/734,576
• Time in Patent Office: 509 Days
• Field of Search: 333/79, 333/73 C, 333/70 R, 333/70 S, 339/147 R, 339/147 P, 339/278 R, 339/278 C, 339/278 A, 339/136 R, 339/143 R, 339/114, 361/301-305
• US Class Current: 333/183
• CPC Class Codes: H01R 13/7195 with planar filters with openings for contacts
• CPC Class Codes: H03H 1/0007 of radio frequency interference filters

Abstract

The following specification describes a connector assembly employing a capacitor assembly having axially spaced radially extending capacitor plates carried by a ceramic or dielectric member. One plurality of plates are connected in common to the connector shell and other radially extending axially spaced plates are connected to respective contacts of the connector to form a filter capacitor for each contact. A conductive elastomer or metal spring engaging one of the common plates under axial pressure ensures a secure electrical ground connection between the plates common to the connector contacts and the shell while a metal spring preassembled to each contact at an axial position coincident with the capacitor assembly exerts a radial outward pressure to ensure an electrical connection to the capacitor plates associated with the respective contact.

Claims

1. An electrical connector assembly including a metal connector shell carrying a plurality of spaced axially extending contacts with each contact spaced radially from each other contact in said shell, the improvement comprising:

a dielectric member in such shell having a respective passageway for each contact and located in a predetermined axial position relative to said shell;

a first metal capacitor plate on said dielectric member common to said plurality of contacts;

means enabling the connection of said first capacitor plate to said metal shell;

another metal capacitor plate for each contact with each other plate individually corresponding to a respective one of said contacts and carried by said dielectric member to form a filter capacitor for each contact; and

means connecting each other individually corresponding plate to a respective contact at an axial position coincident with said dielectric member in said predetermined axial position, wherein said means enabling the connection of said first plate to said shell comprises an electrically conductive member in said shell having a first radial face connected to said common first plate and a second radial face engaging said shell for connecting said common plate to said shell.

2. The assembly claimed in claim 1 in which said conductive member comprises a conductive elastomer.

3. The assembly claimed in claim 1 in which said conductive member comprises a wave washer.

4. In the assembly claimed in claim 1, in which said conductive member is a spring and said shell was a radially inwardly extending shoulder, retention disc means having a passageway for each contact for retaining the foregoing elements in said shell, and means in said shell for placing each radial face of said spring member under axial pressure in response to the receipt of said retention disc means in said shell.

5. The assembly claimed in claim 1 in which a plurality of commonly connected axially spaced first capacitor plates common to all of said contacts are provided on said dielectric member with each first plate extending radially towards each contact, and said first raidal face of said conductive member is under axial pressure against said common first capacitor plate and said second radial face is under axial pressure against said shell.

6. The assembly claimed in claim 5 in which an electrode connected in common to all of said plurality of first plates is carried on the periphery of said dielectric member.

7. The assembly claimed in claim 6 in which each metal spring comprises a split annular member for overlapping engagement with a respective contact, and each contact includes means for locating a respective spring overlappingly engaged therewith at a predetermined axial position.

8. A connector assembly including a metal connector shell carrying a plurality of spaced axially extending contacts with each contact spaced radially from each other contact in said shell, the improvement comprising:

a dielectric member in said shell having a respective passageway for each contact and located at a predetermined axial position relative said shell;

a first plurality of common metal capacitor plates carried by said dielectric member and extending radially of said shell towards each contact to form capacitor plates common to all of contacts;

means connecting each of said first capacitor plates in common to said metal shell under pressure extending axially of said shell, said means including a radially inwardly extending shoulder in said shell, a conductive spring member in said shell having one radial face engaging one plate of said first plurality of plates and another radial face on said spring member engaging said shoulder;

a second plurality of metal capacitor plates each individually corresponding to a respective contact with each plate of said second plurality of plates carried by said dielectric member and extending radially from a respective passageway and spaced axially adjacent one of said first plurality of plates to form a filter capacitor for each contact; and

means carried by each contact for exerting pressure in a radially outwardly direction from each contact for connecting each contact in a respective passageway to a respective plate of second pluraity of capacitor plates.

9. The assembly claimed in claim 8 in which said means for connecting said first capacitor plates under axial pressure includes a retention disc received in said shell and having a passageway for each contact aligned with a passageway in said dielectric member, and means on said disc and shell effective in response to the receipt of said disc in a predetermined position in said shell for applying axial pressure between each radial face of said spring member and said one plate and shoulder.

10. The assembly claimed in claim 9 in which said spring member is an O ring of conductive elastomer.

11. The assembly claimed in claim 9 in which said spring member is a wave washer.

12. In the assembly claimed in claim 9, a ferrite disc located intermediate said retention disc and said dielectric member.

13. In the assembly claimed in claim 9, a resilient non-conductive cushion located intermediate said retention disc and said dielectric member.