Magnetic electrical connection system for an electronic device

• US 9,559,456 B2
• Filed: 03/12/2014
• Issued: 01/31/2017
• Est. Priority Date: 03/15/2013
• Status: Active Grant

• Current Assignee: Google Technology Holdings LLC (Alphabet Inc.)
• Original Assignee: Google Technology Holdings LLC (Alphabet Inc.)
• Inventors: Rodgers, Daniel P, Stone, Frank H, Harmon, Roger W, Carlson, Kenneth W, Schultz, Glenn S
• Primary Examiner(s): Johnson, Amy Cohen
• Assistant Examiner(s): Dzierzynski, Matthew T
• Application Number:
  US14/205,472
• Publication Number:
  US 20140273546A1
• Time in Patent Office: 1,056 Days
• Field of Search: 439/39, 439/38, 439/950
• US Class Current: 1/1
• CPC Class Codes: H01R 13/2421 using coil springs
• CPC Class Codes: H01R 13/6205 Two-part coupling devices held in engagement by a magnet
• CPC Class Codes: H01R 24/20 Coupling parts carrying sockets, clips or analogous contacts and secured only to wire or cable
• CPC Class Codes: H01R 35/04 Turnable line connectors with limited rotation angle with frictional contact members

Abstract

Electrical connection systems (100) for electronic devices (102) are disclosed. In one embodiment, a male electrical connector (104) includes a male housing portion (138) and at least a first magnet (134a) carried by the male housing portion (138). The first magnet (134a) includes a curved contact surface (1200) configured to abut with a female electrical receptacle (106). At least a first resilient electrical contact (136a) is carried by the male housing portion (138) for making an electrical connection with the female electrical receptacle (106). The first magnet (134a) and the first resilient electrical contact (136a) are disposed in a parallel configuration along a transverse axis of the male housing portion (138).

Claims

1. A male electrical connector comprising:

a male housing portion;

at least a first magnet carried by said male housing portion, said first magnet comprising a curved contact surface configured to abut with an inwardly curved contact surface of a substantially cylindrically shaped first ferrous contact included in a female electrical receptacle, the inwardly curved contact surface not having a ground material interfering with the abutting with the inwardly curved contact surface; and

at least a first resilient electrical contact carried by said male housing portion for making an electrical connection by abutting with a curved contact surface of a substantially cylindrically shaped first electrical contact included in the female electrical receptacle;

wherein said first magnet and said first resilient electrical contact are disposed in a parallel configuration along a transverse axis of said male housing portion, and

wherein said first ferrous contact and said first electrical contact are disposed in a parallel configuration along a transverse axis of said female electrical receptacle; and

wherein the male electrical connector is configured to maintain the electrical connection between the first resilient electrical contact carried by said male housing portion and the first electrical contact included in the female electrical receptacle while the male housing portion pivots with respect to the female electrical receptacle.

2. The electrical connector of claim 1, wherein said curved contact surface is electrically conductive.

3. The electrical connector of claim 1, wherein said curved contact surface of said first magnet is substantially cylindrical.

4. The electrical connector of claim 1, wherein said curved contact surface of said first magnet is convex.

5. The electrical connector of claim 1, wherein said first resilient electrical contact projects outwardly beyond said curved contact surface of said first magnet.

6. The electrical connector of claim 1, further comprising a resilient element carried by said male housing portion and biasing said first resilient electrical contact outwardly with respect to said male housing portion.

7. The electrical connector of claim 1, further comprising a shunt carried by said male housing portion, the shunt being configured to modify a magnetic field of said first magnet.

8. The electrical connector of claim 7, further comprising an insulator carried by said male housing portion and insulating said first magnet from said shunt.

9. The electrical connector of claim 1, further comprising:

a second magnet carried by said male housing portion, said second magnet comprising a curved contact surface configured to abut with a curved contact surface of a substantially cylindrically shaped second ferrous contact included in the female electrical receptacle, and

wherein said first resilient electrical contact is disposed between said first magnet and said second magnet.

10. The electrical connector of claim 9, further comprising:

a second resilient electrical contact carried by said male housing portion for making an electrical connection by abutting with a curved contact surface of a substantially cylindrically shaped second electrical contact included in the female electrical receptacle; and

wherein said first resilient electrical contact and said second resilient electrical contact are disposed between said first magnet and said second magnet.

11. The electrical connector of claim 9, further comprising:

a second resilient electrical contact carried by said male housing portion for making an electrical connection by abutting with a curved contact surface of a substantially cylindrically shaped second electrical contact included in the female electrical receptacle;

a third resilient electrical contact carried by said male housing portion for making an electrical connection by abutting with a curved contact surface of a substantially cylindrically shaped third electrical contact included in the female electrical receptacle; and

wherein said first magnet is disposed between said first resilient electrical contact and said second resilient electrical contact, said second resilient electrical contact is disposed between said first magnet and said second magnet, and said second magnet is disposed between said second resilient electrical contact and said third resilient electrical contact.

12. The electrical connector of claim 1, further comprising:

a second magnet carried by said male housing portion, said second magnet comprising a curved contact surface configured to abut with a curved contact surface of a substantially cylindrically shaped second ferrous contact included in the female electrical receptacle;

a third magnet carried by said male housing portion, said third magnet comprising a curved contact surface configured to abut with a curved contact surface of a substantially cylindrically shaped third ferrous contact included in the female electrical receptacle;

a fourth magnet carried by said male housing portion, said fourth magnet comprising a curved contact surface configured to abut with a curved contact surface of a substantially cylindrically shaped fourth ferrous contact included in the female electrical receptacle; and

wherein said second magnet is disposed between said first magnet and said first resilient electrical contact, said first resilient electrical contact is disposed between said second magnet and said third magnet, and said third magnet is disposed between said first resilient electrical contact and said fourth magnet.

13. The electrical connector of claim 1, further comprising:

a second resilient electrical contact carried by said male housing portion for making an electrical connection by abutting with a curved contact surface of a substantially cylindrically shaped second electrical contact included in the female electrical receptacle;

a third resilient electrical contact carried by said male housing portion for making an electrical connection by abutting with a curved contact surface of a substantially cylindrically shaped third electrical contact included in the female electrical receptacle;

a fourth resilient electrical contact carried by said male housing portion for making an electrical connection by abutting with a curved contact surface of a substantially cylindrically shaped fourth electrical contact included in the female electrical receptacle; and

wherein said second resilient electrical contact is disposed between said first resilient electrical contact and said first magnet, said first magnet is disposed between said second resilient electrical contact and said third resilient electrical contact, and said third resilient electrical contact is disposed between said first magnet and said fourth resilient electrical contact.

14. The electrical connector of claim 1, further comprising a first insulator extending through said first magnet and mounting said first resilient electrical contact.

15. The electrical connector of claim 14, further comprising:

a second magnet carried by said male housing portion, said second magnet comprising a curved contact surface configured to abut with a curved contact surface of a substantially cylindrically shaped second ferrous contact included in the female electrical receptacle;

a second resilient electrical contact carried by said male housing portion for making an electrical connection by abutting with a curved contact surface of a substantially cylindrically shaped second electrical contact included in the female electrical receptacle;

a second insulator extending through said second magnet and mounting said second resilient electrical contact; and

a third resilient electrical contact carried by said male housing portion for making an electrical connection by abutting with a curved contact surface of a substantially cylindrically shaped third electrical contact included in female electrical receptacle, said third resilient electrical contact being disposed between said first magnet and said second magnet.

16. An electrical receptacle comprising:

a female housing portion;

at least a first ferrous contact carried by said female housing portion, said first ferrous contact comprising an inwardly curved contact surface configured to abut with a first magnet included in a male electrical connector;

at least a first electrical contact carried by said female housing portion, said first electrical contact comprising a curved contact surface for making an electrical connection by abutting with a first resilient electrical contact included in the male electrical connector; and

a shunt electrically insulated from the first ferrous contact and the first electrical contact;

wherein said first ferrous contact and said first electrical contact are disposed in a parallel configuration along a transverse axis of said female housing portion,

wherein said first magnet and said first resilient electrical contact are disposed in a parallel configuration along a transverse axis of said male electrical connector; and

wherein the electrical receptacle is configured to maintain the electrical connection between the first electrical contact carried by said female housing portion and the first resilient electrical contact included in the male electrical connector while the male electrical connector pivots with respect to the female housing portion.

17. The electrical receptacle of claim 16, wherein said first ferrous contact is electrically conductive.

18. The electrical receptacle of claim 16, wherein said inwardly curved contact surface of said first ferrous contact is substantially cylindrical.

19. The electrical receptacle of claim 16, wherein said first resilient electrical contact included in the male electrical connector projects outwardly beyond a contact surface of said male electrical connector.

20. The electrical receptacle of claim 16, further comprising:

a second ferrous contact carried by said female housing portion, the second ferrous contact comprising an inwardly curved contact surface configured to abut with a second magnet included in the male electrical connector, and

wherein said first electrical contact is disposed between said first ferrous contact and said second ferrous contact.

21. The electrical receptacle of claim 20, wherein said second ferrous contact is electrically conductive.

22. An electrical connection system comprising:

a connector including a male housing portion;

at least a first magnet carried by said male housing portion, said first magnet comprising a curved contact surface;

a receptacle configured to engage said connector and including;

a female housing portion; and

at least a first ferrous contact carried by said female housing portion, said first ferrous contact comprising a substantially cylindrically shaped curved contact surface configured to abut with said curved contact surface of said first magnet, said substantially cylindrically shaped curved contact surface of said first ferrous contact not having a ground material interfering with the abutting with said curved contact surface of said first magnet;

at least a first resilient electrical contact carried by one of said male housing portion and said female housing portion; and

at least a second electrical contact carried by said other of said male housing portion and said female housing portion, and said first electrical contact comprising a substantially cylindrically shaped inwardly curved contact surface for making an electrical connection by abutting with said first resilient electrical contact;

wherein said first magnet and said first resilient electrical contact are disposed in a parallel configuration along a transverse axis of said electrical connection system, and

wherein said first ferrous contact and said first electrical contact are disposed in a parallel configuration along a transverse axis of said electrical connection system; and

wherein the connector is configured to maintain the electrical connection between the electrical contacts of said male housing portion and said female housing portion while the male housing portion pivots with respect to the female housing portion.

23. The electrical connection system of claim 22, wherein said curved contact surface of said first magnet is electrically conductive and said curved contact surface of said first ferrous contact is electrically conductive.

24. The electrical connection system of claim 22, wherein said curved contact surface of said first magnet is substantially cylindrical.

25. The electrical connection system of claim 22, further comprising a second magnet carried by said male housing portion and comprising a curved contact surface, and wherein said first resilient electrical contact is disposed between said first magnet and said second magnet.

26. The electrical connection system of claim 22, wherein a longitudinal axis of the substantially cylindrically shaped inwardly curved contact surface of the first ferrous contact and a longitudinal axis of the substantially cylindrically shaped inwardly curved contact surface of the second electrical contact are aligned with an articulation axis, said male housing portion being articulatable about the articulation axis and relative to said female housing portion when said connector is engaged with said receptacle.

27. An electrical connector comprising:

a male housing portion having a substantially cylindrical magnetic contact surface configured to abut with a substantially cylindrical inwardly curved contact surface of a female electrical receptacle, the substantially cylindrical magnetic contact surface being configured to interconnect with said substantially cylindrical inwardly curved contact surface of the female electrical receptacle and hold a first resilient electrical contact interconnected with a female electrical receptacle; and

the first resilient electrical contact carried by said male housing portion for making an electrical connection with the female electrical receptacle,

wherein the electrical connector is configured to maintain the electrical connection between the first resilient electrical contact carried by said male housing portion and the female electrical receptacle while the male housing portion pivots with respect to the female electrical receptacle.

28. The electrical connector of claim 27, wherein:

the substantially cylindrical magnetic contact surface comprises a first substantially cylindrical magnetic contact surface; and

the electrical connector further comprises a second substantially cylindrical magnetic contact surface carried by said male housing portion, said second substantially cylindrical magnetic contact surface being configured to hold said substantially cylindrical magnetic contact surface of said male housing portion interconnected with said substantially cylindrical inwardly curved contact surface of the female electrical receptacle and hold said first resilient electrical contact interconnected with the female electrical receptacle.

29. The electrical connector of claim 28, further comprising:

a second resilient electrical contact carried by said male housing portion for making an electrical connection with the female electrical receptacle;

wherein said first resilient electrical contact and said second resilient electrical contact are disposed between said first substantially cylindrical magnetic contact surface and said second substantially cylindrical magnetic contact surface.

30. The electrical connector of claim 27, wherein said first resilient electrical contact projects outwardly beyond said substantially cylindrical magnetic contact surface of said male housing portion.

31. An electronic device comprising:

a device housing;

electronic circuitry carried by said device housing; and

a receptacle including;

a female housing portion coupled to said device housing;

at least a first ferrous contact carried by said female housing portion, and said first ferrous contact comprising a substantially cylindrically shaped inwardly curved contact surface configured to abut with a male electrical connector, the substantially cylindrically shaped inwardly curved contact surface not having a ground material interfering with the abutting with the male electrical connector; and

at least a first electrical contact carried by said female housing portion and electrically coupled to said electronic circuitry, and said first electrical contact comprising a substantially cylindrically shaped outwardly curved contact surface for making an electrical connection with the male electrical connector,

wherein the receptacle is configured to maintain the electrical connection between the first electrical contact carried by said female housing portion and the male electrical connector while the male electrical connector pivots with respect to the female housing portion.

32. The electronic device of claim 31, wherein said first ferrous contact is electrically conductive and electrically coupled to said electronic circuitry.

33. The electronic device of claim 31, wherein said substantially cylindrically shaped curved contact surface of said first ferrous contact has a substantially constant radius.

34. The electronic device of claim 31, wherein said first electrical contact makes the electrical connection by abutting with a first resilient electrical contact included in the male electrical connector, the first resilient electrical contact projecting outwardly beyond a contact surface of said male electrical connector.