Electromagnetic interference shielding gasket

• US 6,444,900 B1
• Filed: 05/19/1999
• Issued: 09/03/2002
• Est. Priority Date: 05/19/1999
• Status: Expired due to Fees

• Current Assignee: FCI Americas Technology Incorporated (FCI)
• Original Assignee: FCI Americas Technology Incorporated (FCI)
• Inventors: Casey, Daniel T.
• Primary Examiner(s): Reichard, Dean A.
• Assistant Examiner(s): OLIVA, CARMELO B
• Application Number:
  US09/314,508
• Time in Patent Office: 1,203 Days
• Field of Search: 277/920, 277/919, 439/927, 439/939, 174/35.GC, 174/35.R, 361/818, 361/753, 361/816, 361/683, 361/686
• US Class Current: 174/358
• CPC Class Codes: H01R 13/6584 formed by conductive elastomeric members, e.g. flat gaskets or O-rings

Abstract

The present invention is directed to a gasket for reducing electromagnetic emission from electronic equipment. The gasket is defined by a substantially rectangular body that includes one or more openings through which a portion of a connector, to which the gasket is mounted, may pass. The gasket includes a hook-shaped peripheral edge, a plurality of locating projections, a plurality of retaining clips, and tabs that are formed on opposing sides of the opening(s). The hook-shaped edge, locating projections and retaining clips are adapted to receive and secure a connector to the gasket, and the tabs are provide to make an electrical contact with the connector housing. Additionally, the gasket includes spring fingers for use in mounting the gasket to a bulkhead and for forming an electrical contact with the bulkhead.

Claims

1. A gasket for shielding electronic equipment from electromagnetic interference, comprising:

a body having a first edge, a second edge and at least one opening between said edges;

a channel formed between said at least one opening and said first edge; and

a retainer formed between said at least one opening and said second edge, said retainer comprising retaining clips for coupling said gasket to said electronic equipment, wherein some of said retaining clips have opposing curved portions.

2. The gasket as recited in claim 1, further comprising conductive tabs formed on opposing sides of said at least one opening.

3. The gasket as recited in claim 1, further comprising fingers formed on opposing sides of said at least one opening.

4. The gasket as recited in claim 3, wherein said fingers are angled such that said fingers extend forwardly from said body.

5. The gasket as recited in claim 1, further comprising structure between said at least one opening and said channel.

6. The gasket as recited in claim 5, said structure defining a curved region that extends rearwardly from said body.

7. The gasket as recited in claim 1, wherein said channel is formed by bending said first edge.

8. The gasket as recited in claim 1, further comprising an increased rigidity area.

9. The gasket as recited in claim 8, wherein said increased rigidity area comprises a lower end that is formed by bending a length of said body back onto itself.

10. The gasket as recited in claim 1, wherein said at least one opening comprises a plurality of openings.

11. The gasket as recited in claim 10, wherein each of said plurality of openings have a corresponding retainer.

12. An EMI gasket for receiving a connector, the connector including a housing having flanges comprising at least one aperture for mounting said gasket to the connector, the housing further including electrically conductive tabs that are adapted to mate with said gasket, said gasket comprising:

a body having a first edge, a second edge and at least one opening there between and sized to accept the connector;

a channel between said opening and said first edge adapted to receive one of the flanges of the connector;

a projection between said at least one opening and said channel and adapted to be received by the aperture formed on one of the flanges;

a retainer between said opening and said second edge adapted to be received by the aperture in the other of said flange of the connector, said retainer comprises a plurality of retaining clips for engaging opposite sides of said aperture of said flanges; and

conductive tabs formed on opposing sides of said at least one opening to contact the electrically conductive tabs of the connector.

13. The EMI gasket as recited in claim 12, further comprising fingers formed on upper and lower sides of said at least one opening.

14. The EMI gasket as recited in claim 13, wherein said fingers are angled such that said fingers extend forwardly from said body.

15. The EMI gasket as recited in claim 12, further comprising an increased rigidity area.

16. The EMI gasket as recited in claim 15, wherein said increased rigidity area comprises a lower end that is formed by bending a length of said body back onto itself.

17. A method of shielding electronic equipment from electromagnetic interference, comprising the steps of:

providing a circuit substrate;

providing an electrical connector having a first and second flange;

mounting said connector to said circuit substrate;

providing a gasket, said gasket comprising a first edge, a second edge, an opening between said edges, a channel between said opening and said first edge and a retainer between said opening and said second edge, wherein said retainer comprises retaining clips, some of said retaining clips having opposing curved portions;

inserting said first flange into said channel; and

engaging said second flange with said retainer.

18. The method as recited in claim 17, wherein the mounting step occurs before the inserting step.

19. The method as recited in claim 17, further comprising the steps of:

providing a bulkhead; and

engaging said bulkhead with said gasket.

20. The method as recited in claim 17, wherein the engaging step comprises the step of rotating said gasket.

21. The method as recited in claim 17, wherein said gasket includes a projection between said opening and said channel, one of said flanges of said connector includes an aperture, and further comprising the step of aligning said projection with said aperture.