Contact pin design for a modular jack

• US 6,394,850 B1
• Filed: 03/20/2000
• Issued: 05/28/2002
• Est. Priority Date: 03/20/2000
• Status: Expired due to Fees

• Current Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Original Assignee: 3Com Corporation (HP Inc.)
• Inventors: Madsen, Brent D., Oliphant, David, Johnson, Thomas A.
• Primary Examiner(s): Ta, Tho D.
• Assistant Examiner(s): NGUYEN, PHUONGCHI T
• Application Number:
  US09/528,500
• Time in Patent Office: 799 Days
• Field of Search: 439/660,946,676,607,79,76.1,354,418,62
• US Class Current: 439/660
• CPC Class Codes: H01R 12/721 cooperating directly with the edge of the rigid printed circuits
• CPC Class Codes: H01R 24/64 for high frequency, e.g. RJ 45
• CPC Class Codes: Y10S 439/946 Memory card cartridge

Abstract

A communications card allows computers to be electrically connected to electronic devices and communications systems. The communications card includes a modular jack with a plurality of contact pins. The contact pins include a plug engaging portion that does not include any sections that are angled more than about 90° in order to minimize the stresses in the contact pins. The contact pins also include a connector portion that allows the contact pins to be electrically connected to a printed circuit board disposed within the communications card. Preferably, the plug engaging portion includes an elongated arm that aids in absorbing stress and deflection of the contact pins. Advantageously, the contact pins are designed to minimize the height of the modular jack such that the modular jack can be used with communications cards that comply with the PCMCIA Type III standards.

Claims

1. A jack for connecting a RJ series plug to a communications card conforming to Type III PCMCIA standards, the jack comprising:

a housing including an upper surface, a lower surface and a front wall, the upper surface and the lower surface of the housing being separated by a distance equal to or less than about 10.5 mm;

a receptacle located in the front wall of the housing, the receptacle including an upper surface and a lower surface that are separated by a distance equal to or less than about 10.1 mm, the receptacle being sized and configured to receive a RJ series plug such that no portion of the plug extends through either the upper surface or the lower surface of the housing; and

a plurality of contact pins located in the housing, the contact pins being sized and configured to allow electrical communication between a connector plug inserted into the receptacle and the communications card, the contact pins including a plug engaging portion that is sized and configured to electrically communicate with the RJ series plug received within the receptacle and a connector portion that is sized and configured to electrically connect the contact pin to a communication card.

2. The modular jack as in claim 1, wherein plug engaging portion of the contact pins further include a first end located proximate the front wall of the modular jack;

an upwardly extending section that is sized and configured to engage the connector plug as it is inserted into the receptacle, the upwardly extending section connected to the first end at an angle less than about 60°

;

an elongated section having a length, the elongated section connected to the upwardly extending section at an angle less than about 60°

; and

a second end positioned proximate a rear portion of the modular jack, the second end connected to the elongated section at an angle less than about 60°

.

3. The modular jack as in claim 1, wherein the connection portion is sized and configured to electrically connect the contact pin to a printed circuit board disposed within the communications card.

4. The modular jack as in claim 1, wherein the insertion of the plug into the receptacle deflects the plurality of contact pins, but the pins do not experience significant stress concentrations because the plug engaging portions do not include any sections that are joined at more than a 90°

angle.

5. A jack comprising:

a housing including a front surface, a top surface and a bottom surface, the top surface and the bottom surface being separated by a distance of about 10.5 mm or less;

a receptacle completely disposed within the front surface of the housing, the receptacle being sized and configured to receive a RJ series connector plug such that no portion of the plug extends through either the top surface or the bottom surface of the housing, the receptacle being defined by an upper planer surface and a lower planar surface; and

a contact pin connected to the housing, the contact pin including a first portion extending into the receptacle and being sized and configured to engage a connector plug inserted into the receptacle, the first portion including one or more curved sections curved at an angle of less than about 60°

, the contact pin also including a second portion that is sized and configured to electrically connect the contact pill to an electronic device.

6. A connector that conforms with the 10.5 mm height limitation for a Type III PCMCIA communications card, the connector comprising;

a RJ series connector plug including a main body portion and a biased clip;

a jack including a housing with a front surface, atop surface and a bottom surface, the jack including a receptacle completely disposed within the front surface of the housing, the receptacle being sized and configured to receive the RJ series connector plug such that no portion of the plug extends through either the top surface or the bottom surface of the housing; and

a contact pin disposed within the housing, the contact pin including a first portion extending into the receptacle and being sized and configured to engage the connector plug inserted into the receptacle, the first portion including one or more curved sections curved at an angle less than about 60°

, the contact pin including a second portion that is sized and configured to electrically connect the contact pin to an electronic device.

7. The connector as in claim 6, wherein the receptacle includes an upper planer surface and a lower planar surface that separated by a distance of about 10.1 mm or less.

8. The connector as in claim 6, wherein the top surface of the housing and the bottom surface of the housing are separated by a distance of about 10.5 mm or less.

9. The connector as in claim 6, wherein the first portion is deflected when the connector plug is inserted into the receptacle, the deflection of the first portion including a horizontal component and a vertical component, the horizontal component being generally equal to or greater than the vertical component.

10. The connector as in claim 6, further comprising a groove positioned in the bottom surface of the housing, an end of the first portion of the contact pin being slidably disposed within the groove.

11. The connector as in claim 6, further comprising a groove positioned in the bottom surface of the housing, an end of the first portion of the contact pin being permanently disposed within the groove.

12. An apparatus that is configured to allow electrical communication between two or more electronic devices, the apparatus comprising:

a jack;

a receptacle located in a front wall of the jack, the receptacle including an upper surface and a lower surface that are separated by a distance of 10.5 mm or less, the receptacle being sized and configured to receive a RJ series connector plug such that no portion of the connector plug extends through either the upper surface or the lower surface of the receptacle; and

a contact pin at least partially disposed within the receptacle, the contact pin being sized and configured to electrically communicate with the RJ series connector plug when it is received within the receptacle, the contact pin comprising;

a plug engaging portion comprising;

a first section located proximate the front wall of the modular jack;

an upwardly extending section that is sized and configured to engage tile connector plug as it is inserted into the receptacle, the upwardly extending section connected to the first section at an angle less than about 60°

;

an elongated section leaving a length, the elongated section connected to the upwardly extending section at an angle less than about 60°

; and

a second end positioned proximate a rear portion of the modular jack, the second end connected to the elongated section; and

a connection portion connected to the second end of the plug engaging portion, the connection portion being sized and configured to electrically connect the contact pin to an electrical contact.

13. The apparatus as in claim 12, wherein the upper surface of the receptacle is separated by a distance of about 10.1 mm from the lower surface of the receptacle.

14. The apparatus as in claim 12, wherein the plug engaging portion deflects when the connector plug is inserted into the receptacle;

and wherein the deflection of the plug engaging portion includes a horizontal component and a vertical component, the horizontal component being generally equal to or greater than the vertical component.

15. The apparatus as in claim 12, wherein the elongated section of the plug engaging portion has a length that is greater than a longitudinal length of the receptacle.

16. The apparatus as in claim 12, wherein the upwardly extending section and the elongated section of the plug engaging portion are joined at an angle generally equal to or less thin about 30°

.

17. The apparatus as in claim 12, wherein the upwardly extending section and the elongated section are generally planar.

18. The apparatus as in claim 12, wherein the first end is generally planar and the second end is generally planar, wherein the first end is positioned generally parallel to the second end.

19. The apparatus as in claim 12, further comprising a curved section and an engagement section of the connection portion, the curved section being formed at an angle generally equal to or greater than about 90°

.

20. The apparatus as in claim 12, wherein the connection portion generally does not deflect when the connector plug is either inserted or removed from the receptacle.

21. The apparatus as in claim 12, wherein the connection portion is sized and configured to electrically connect the contact pill to a printed circuit board.

22. The apparatus as in claim 12, wherein the first end of the plug engaging portion is located in a groove proximate the front wall of the modular jack.

23. A jack that is configured to allow a RJ series connector plug to be connected to a communication card that conforms to Type III PCMCIA standards, the jack comprising:

a housing including an upper surface, a lower surface and a sidewall, the upper surface and the lower surface having a height equal to or less than about 10.5 mm;

a receptacle located in the sidewall of the modular jack, the receptacle being sized and configured to receive the RJ series connector plug such that no portion of the connector plug extends through either the upper surface or lower surface of the receptacle; and

a contact pin comprising;

a plug engaging portion including a first end, an upwardly extending section, an elongated section and a second end, the first end being positioned proximate the front wall of the modular jack, the upwardly extending section being sized and configured to engage the connector plug as it is inserted into the receptacle, the elongated section including an extended length, and the second end being positioned proximate a rear portion of the modular jack, the upwardly extending section, the elongated section and the second end of the plug engaging portion being joined at an angle of less than about 90°

in order to minimize stresses in the contact pin as the connector plug is inserted or removed from the receptacle; and

a connection portion connected to the second end of the plug engaging portion, the connection portion being sized and configured to electrically connect the contact pin to an electrical contact of the one or more electrical contacts of the electrical device.

24. The jack as in claim 23, wherein the connection portion generally does not deflect when the connector plug is either inserted or removed from the receptacle.

25. The jack as in claim 23, wherein the plug engaging portion deflects when the connector plug is inserted into the receptacle;

and wherein the deflection of the plug engaging portion includes both a horizontal component and a vertical component, the horizontal component being generally equal to or larger than the vertical component.

26. The jack as in claim 23, wherein the elongated section of the plug engaging portion has a greater length than a longitudinal length of the receptacle.