Magnetic arrangements and labels for connectors

• US 9,780,484 B2
• Filed: 08/13/2012
• Issued: 10/03/2017
• Est. Priority Date: 08/11/2011
• Status: Active Grant

• Current Assignee: Apple Inc.
• Original Assignee: Apple Inc.
• Inventors: DiFonzo, John C., Anastas, George V., Narajowski, David, Hamel, Bradley J., Degner, Brett William, Ligtenberg, Chris
• Primary Examiner(s): CHUNG TRANS, XUONG MY
• Application Number:
  US13/584,769
• Publication Number:
  US 20130210244A1
• Time in Patent Office: 1,877 Days
• Field of Search: 439 38- 39
• CPC Class Codes: H01R 13/6205 Two-part coupling devices held in engagement by a magnet
• CPC Class Codes: H01R 43/26 for engaging or disengaging the two parts of a coupling device structural association with two-part coupling device H01R13/629
• CPC Class Codes: Y10T 29/49117 Conductor or circuit manufacturing

Abstract

Magnetic connectors that may be readily manufactured and provide a high landed force and labels for magnetic connectors that may protect magnets or magnetic elements in the connectors, provide an aesthetically pleasing appearance, and improve the magnetic performance of the connectors. In various examples, power and signal paths may be formed using contacts that are separate from magnets or magnetic elements, paths may be formed using magnets or magnetic elements, or paths may be formed using a combination of contacts and magnets and magnetic elements. The magnets may have various arrangements. One or more magnets may be used in conjunction with magnetic elements. The interface surface of these magnets and magnetic elements may have various contours, such as flat, spline, or involute.

Claims

1. A method of assembling a connector comprising:

providing a first magnet and a second magnet;

orienting the first magnet and the second magnet such that their magnetic field lines are in opposing directions;

placing the first magnet and the second magnet in a housing; and

attaching a label to the first magnet and attaching the label to the second magnet near an opening in the housing such that the label is positioned between the first magnet and a corresponding connector and between the second magnet and the corresponding connector when the connector and the corresponding connector are mated, the label comprising;

a first magnetically conductive portion;

a second magnetically conductive portion;

a magnetically less conductive portion between the first magnetically conductive portion and the second magnetically conductive portion; and

an opening forming a passage through the label.

2. The method of claim 1 wherein attaching the label comprises attaching a label using a layer of adhesive to attach the label to the first magnet and to attach the label to the second magnet.

3. The method of claim 1 wherein the first and second magnetically conductive portions are steel.

4. The method of claim 1 wherein attaching the label comprises attaching a label formed of a resin that contains magnetically conductive particles.

5. The method of claim 1 wherein the first magnetically conductive portion is at least approximately aligned with the first magnet, and the second magnetically conductive portion is at least approximately aligned with the second magnet.

6. The method of claim 5 wherein the label has a thickness between 0.05 and 0.2 mm, such that stray flux is reduced, but a magnetic field at a front of the label is not reduced beyond a desirable level, and the magnets are physically protected.

7. The method of claim 5 wherein the label has a thickness between 0.05 and 0.2 mm.

8. The method of claim 5 wherein the label is formed of resin containing magnetically conductive particles in the first magnetically conductive portion and the second magnetically conductive portion.

9. The method of claim 8 wherein the label has substantially no magnetically conductive particles in the magnetically less conductive portion.

10. The method of claim 1 wherein the label is at least substantially formed of polycarbonate containing iron powder.

11. The method of claim 5 wherein the label is formed of polycarbonate containing iron powder in the first magnetically conductive portion and the second conductive portion.

12. The method of claim 11 wherein the label has substantially no iron powder in the magnetically less conductive portion.

13. The method of claim 5 wherein the label is attached to the first and second magnets by a magnetic field.

14. The method of claim 5 wherein the adhesive is glue.

15. The method of claim 5 wherein the label is attached by being applied as a coating to a surface of the first magnet and the second magnet.

16. The method of claim 5 wherein the first magnetically conductive portion conveys power and the second magnetically conductive portion conveys ground.

17. The method of claim 5 wherein the connector is a receptacle.

18. The method of claim 17 further comprising:

providing a third magnet and a fourth magnet;

orienting the third magnet and the fourth magnet such that their magnetic field lines are in opposing directions;

placing the third magnet and the fourth magnet in the housing.

19. The method of claim 18 wherein attaching the label further comprises attaching the label further comprising:

a third magnetically conductive portion at least approximately aligned with the third magnet,

a fourth magnetically conductive portion at least approximately aligned with the fourth magnet; and

a second magnetically less conductive portion between the third magnetically conductive portion and the fourth magnetically conductive portion.

20. The method of claim 19 wherein at least one conductive portion may convey power and at least one conductive portion may convey ground.

21. The method of claim 20 wherein at least one conductive portion may convey a signal.

22. A connector comprising:

a first magnet;

a second magnet, the first magnet and the second magnet oriented such that their magnetic field lines are in opposing directions;

a housing supporting the first magnet and the second magnet;

a label attached to the first magnet and the second magnet near an opening in the housing such that the label is positioned between the first magnet and a corresponding connector and between the second magnet and the corresponding connector when the connector and the corresponding connector are mated, the label comprising;

a first magnetically conductive portion;

a second magnetically conductive portion;

a magnetically less conductive portion between the first magnetically conductive portion and the second magnetically conductive portion; and

an opening forming a passage through the label.

23. The connector of claim 22 further comprising a layer of adhesive between the label and the first magnet and between the label and the second magnet.

24. The connector of claim 22 wherein the first and second magnetically conductive portions are steel.

25. The connector of claim 22 wherein the label comprises a label formed of a resin that contains magnetically conductive particles.

26. The connector of claim 22 wherein the first magnetically conductive portion is at least approximately aligned with the first magnet and the second magnetically conductive portion is at least approximately aligned with the second magnet.

27. The connector of claim 26 wherein the label has a thickness between 0.05 and 0.2 mm, such that stray flux is reduced, but a magnetic field at a front of the label is not reduced beyond a desirable level, and the magnets are physically protected.

28. The connector of claim 26 wherein the label has a thickness between 0.05 and 0.2 mm.

29. The connector of claim 26 wherein the label is formed of resin containing magnetically conductive particles in the first magnetically conductive portion and the second magnetically conductive portion.

30. The connector of claim 29 wherein the label has substantially no magnetically conductive particles in the magnetically less conductive portion.

31. The connector of claim 22 wherein the label is at least substantially formed of polycarbonate containing iron powder.

32. The connector of claim 26 wherein the label is formed of polycarbonate containing iron powder in the first magnetically conductive portion and the second conductive portion.

33. The connector of claim 32 wherein the label has substantially no iron powder in the magnetically less conductive portion.

34. The connector of claim 26 wherein the label is attached to the first and second magnets by a magnetic field.

35. The connector of claim 26 wherein the label is glued to the first and second magnets by a layer of adhesive.

36. The connector of claim 26 wherein the label is attached by being applied as a coating to a surface of the first magnet and the second magnet.

37. The connector of claim 26 wherein the first magnetically conductive portion conveys power and the second magnetically conductive portion conveys ground.

38. The connector of claim 26 wherein the connector is a receptacle.

39. The connector of claim 38 further comprising:

a third magnet and a fourth magnet oriented such that their magnetic field lines are in opposing directions,

wherein the third magnet and the fourth magnet are supported by the housing.

40. The connector of claim 39 wherein the label further comprises:

a third magnetically conductive portion at least approximately aligned with the third magnet,

a fourth magnetically conductive portion at least approximately aligned with the fourth magnet; and

a second magnetically less conductive portion between the third magnetically conductive portion and the fourth magnetically conductive portion.

41. The connector of claim 40 wherein at least one conductive portion may convey power and at least one conductive portion may convey ground.

42. The connector of claim 41 wherein at least one conductive portion may convey a signal.

43. The connector of claim 26 wherein the opening is located between the first magnetically conductive portion and the second magnetically conductive portion of the label.

44. The connector of claim 43 further comprising a plurality of contacts, wherein the opening allows access to the contacts by the corresponding connector.

45. A connector comprising:

a first magnet;

a second magnet, the first magnet and the second magnet oriented such that their magnetic field lines are in opposing directions;

a housing supporting the first magnet and the second magnet;

a label attached to the first magnet and the second magnet near an opening in the housing such that the label is positioned between the first magnet and a corresponding connector and between the second magnet and the corresponding connector when the connector and the corresponding connector are mated, the label comprising;

a first magnetically conductive portion;

a second magnetically conductive portion separate from the first magnetically conducive portion; and

a magnetically less conductive portion between and separating the first magnetically conductive portion and the second magnetically conductive portion.