Surface connector with silicone spring member

• US 9,876,307 B2
• Filed: 09/23/2016
• Issued: 01/23/2018
• Est. Priority Date: 09/03/2015
• Status: Active Grant

• Current Assignee: Apple Inc.
• Original Assignee: Apple Inc.
• Inventors: Wagman, Daniel C., Jol, Eric S., Do, Trent K.
• Primary Examiner(s): Patel, Tulsidas C
• Assistant Examiner(s): Leigh, Peter G
• Application Number:
  US15/274,176
• Publication Number:
  US 20170133785A1
• Time in Patent Office: 487 Days
• Field of Search: 439626
• CPC Class Codes: H01R 12/53 connecting to cables except for flat or ribbon cables
• CPC Class Codes: H01R 12/714 with contacts abutting directly the printed circuit; Button contacts therefore provided on the printed circuit
• CPC Class Codes: H01R 13/08 Resiliently-mounted rigid pins or blades
• CPC Class Codes: H01R 13/15 Pins, blades or sockets having separate spring member for producing or increasing contact pressure
• CPC Class Codes: H01R 13/2428 using meander springs
• CPC Class Codes: H01R 13/2478 spherical
• CPC Class Codes: H01R 13/521 Sealing between contact members and housing, e.g. sealing insert
• CPC Class Codes: H01R 4/02 Soldered or welded connections H01R4/625, H01R4/723, H01R12/59 take precedence

Abstract

Contact structures for devices, where contacts in the contact structures may provide a sufficient normal force to provide a good electrical connection with corresponding contacts while consuming a minimal amount of surface area, depth, and volume in a device, and where the contact structures may prevent or limit the ingress of fluid or debris into the device. On example may provide a contact structure having a frame. The frame may be arranged to be placed in an opening in a device enclosure for an electronic device or the frame may be part of the electronic device. The frame may include a number of passages, each passage for a contact of the contact structure. Each contact may be held to the frame by a pliable membrane. Each contact may connect to a board in the electronic device via a compliant conductive path.

Claims

1. A contact structure comprising:

a frame having a plurality of passages from a top of the frame to a bottom of the frame, each passage having an inside edge, wherein the frame is nonconductive;

a plurality of contacts, each contact having a dome-shaped top surface and located in one of the plurality of passages; and

a plurality of pliable membranes, each between an outside edge of one of the plurality of contacts and the inside edge of a passage such that at least a portion of a top surface and a portion of a bottom surface of the contact are exposed.

2. The contact structure of claim 1 wherein a bottom surface of each of the plurality of contacts is circular.

3. The contact structure of claim 1 wherein the outside edge of each of the plurality of contacts and an adjacent inside edge of each of the plurality of pliable membranes each comprise first interlocking features that interlock to secure the plurality of contacts in place in the plurality of pliable membranes.

4. The contact structure of claim 3 wherein an outside edge of each of the plurality of pliable membranes and the inside edge of each of the plurality of passages each comprise second interlocking features.

5. The contact structure of claim 4 wherein the first interlocking features include a first notch located circumferentially around the outside edge of each of the plurality of contacts and a first tab on the adjacent inside edge of each of the plurality of pliable membranes.

6. The contact structure of claim 5 wherein the second interlocking features include a second tab extending circumferentially around the inside edge of each passage and a second notch in the outside edge of each of the plurality of pliable membranes.

7. The contact structure of claim 6 wherein the frame is formed using one of a liquid crystal polymer (LCP), glass-filled nylon, aluminum, or ceramic.

8. The contact structure of claim 6 wherein the plurality of pliable membranes are formed of silicone or rubber.

9. The contact structure of claim 6 wherein the plurality of pliable membranes are nonconductive.

10. The contact structure of claim 6 wherein the contacts are formed of copper, a copper-nickel alloy, or stainless steel.

11. The contact structure of claim 6 wherein the top surfaces of the contacts are circular, oval, or square.

12. The contact structure of claim 5 wherein the first notch on each of the plurality of contacts and the first tab on each of the plurality of pliable membranes interlock to prevent the plurality of contacts from being pushed out of the plurality of pliable membranes.

13. The contact structure of claim 1 further comprising a plurality of complaint conductive paths, each from one of the plurality of contacts to a board.

14. The contact structure of claim 13 wherein each of the plurality of compliant conductive paths are a wire, spring, or spring-loaded contact.

15. A contact structure comprising:

a frame having an outside edge and further having a plurality of passages from a top of the frame to a bottom of the frame, each passage having an inside edge;

a plurality of contacts, each contact located in a passage and having a dome-shaped contacting surface; and

a plurality of pliable membranes, each between an outside edge of one of the plurality of contacts and an inside edge of a passage such that at least a portion of a top surface and an extension of the contact are exposed,

wherein the outside edge of each of the plurality of contacts and adjacent inside edges of the plurality of pliable membranes each comprise interlocking features that interlock to secure the plurality of contacts in the plurality of pliable membranes.

16. The contact structure of claim 15 wherein the interlocking feature on the outside edge of each of the plurality of contacts comprises a first notch located circumferentially around each contact.

17. The contact structure of claim 16 wherein the interlocking feature on the adjacent inside edge of each of the plurality of pliable membranes includes a first tab to fit in the first notch in the outside edge of each contact.

18. The contact structure of claim 15 wherein each contact includes an inside portion, where a portion of each pliable membrane is included in the inside portion.

19. The contact structure of claim 18 wherein each of the plurality of pliable membranes has a notch to accept a first tab in the inside edge of each passage.

20. The contact structure of claim 19 wherein a contact extension for a contact terminates in a pad.

21. The contact structure of claim 15 wherein the frame is nonconductive.

22. An electronic device comprising:

a housing, the housing having an opening, the opening having an inside edge; and

a contact structure located in the opening in the housing, the contact structure comprising;

a frame having a plurality of passages from a top of the frame to a bottom of the frame, each passage having an inside edge;

a plurality of contacts, each contact having a dome-shaped top surface and located in one of the plurality of passages; and

a plurality of first pliable membranes, each between an outside edge of one of the plurality of contacts and the inside edge of a passage such that at least a portion of a top surface and a portion of a bottom surface of the contact are exposed,

wherein an outside edge of each of the plurality of contacts and adjacent inside edges of the plurality of first pliable membranes each comprise interlocking features that interlock to prevent the plurality of contacts from being pushed out of the plurality of first pliable membranes.

23. The electronic device of claim 22 wherein a bottom surface of each of the plurality of contacts is circular.

24. The electronic device of claim 22 wherein the interlocking feature on the outside edge of each of the plurality of contacts comprises a first notch extending circumferentially around the contact.

25. The electronic device of claim 24 wherein the interlocking feature on the adjacent inside edge of each first pliable membrane has a first tab to fit in the first notch in the outside edge of each contact.

26. The electronic device of claim 25 wherein the frame is nonconductive.

27. The electronic device of claim 22 wherein the inside edge of the opening in the housing and an outside edge of the frame include interlocking features to secure the frame in place in the housing.