Slim C5/C6 coupler

• US 8,491,332 B1
• Filed: 01/26/2012
• Issued: 07/23/2013
• Est. Priority Date: 01/26/2012
• Status: Expired due to Fees

• Current Assignee: Volex Incorporated (Volex Group PLC)
• Original Assignee: Volex Incorporated (Volex Group PLC)
• Inventors: Toh, Mui Lian Jessica, Mo, YuanWen
• Primary Examiner(s): DINH, PHUONG K
• Application Number:
  US13/359,356
• Publication Number:
  US 20130196548A1
• Time in Patent Office: 544 Days
• Field of Search: 439/668, 439/568, 439/101
• US Class Current: 439/568
• CPC Class Codes: H01R 13/64 Means for preventing incorrect coupling
• CPC Class Codes: H01R 13/652 with earth pin, blade or socket
• CPC Class Codes: H01R 2103/00 Two poles

Abstract

Embodiments relate to a C5/C6 coupler having a substantially equivalent shape and size as a C7/C8 coupler. Embodiments relate to a power supply cord that provides an earth connection to the cord. Still more particularly, embodiments relate to a slim inlet that provides a make-first-and-break-last earth connection and prevents incompatible cords, different type of connectors, from being connected to the slim inlet.

Claims

1. A power inlet for an electric connector, comprising:

a housing having a front side and a back side with a recessed cavity formed within the housing starting from an opening in a surface of said front side, wherein said recessed cavity has a first substantially circular portion on a first side, a second substantially circular portion on a second side, a substantially indented channel connecting said first and second substantially circular portions, and an elongated trench recessed in a sidewall of said substantially indented channel;

a live pin having a first end protruding out of said housing into said first substantially circular portion, wherein said live pin has a substantially cylindrical shape;

a neutral pin having a first end protruding out of said housing into said second substantially circular portion, wherein said neutral pin has a substantially cylindrical shape; and

an earth spring having a first end protruding out of said housing into said elongated trench, wherein a portion of said first end of said earth spring is exposed in said trench and is configured to not contact a surface of said trench when deflected by an earth pin of a mating connector.

2. The inlet of claim 1, further comprising:

a hook portion of said earth spring that extends out from said first end of said earth spring distal from said housing and bends under said first end of said earth spring.

3. The inlet of claim 2, wherein said hook portion of said earth spring further includes a raised portion of said earth spring that juts out from said trench.

4. The inlet of claim 1, wherein said raised portion contacts said earth pin at an angle of between approximately 0 degrees to approximately 45 degrees relative to the earth pin.

5. The inlet of claim 1, wherein said earth spring protrudes further out of said housing than said live pin and said neutral pin to facilitate make-first-and break-last earth contact with the earth pin.

6. The inlet of claim 1, further comprising:

a contact pad connected to a second of end of said live pin that is exposed through an opening formed in said back side of said housing.

7. The inlet of claim 6, wherein said contact pad comprises:

a flat base that rests on said second end of said live pin in a plane substantially perpendicular to a longitudinal axis of said live pin.

8. The inlet of claim 7, wherein said contact pad further comprises:

a projection that extends outward from an end of said base in a plane substantially parallel to said longitudinal axis of said live pin in a direction that is distal from said live pin.

9. The inlet of claim 8, further comprising:

an end of said projection that extends out of said opening in said back side of said housing having an aperture formed in an exposed portion of said end.

10. The inlet of claim 1, further comprising:

a contact pad connected to a second end of said neutral pin that is exposed through an opening formed in said back side of said housing.

11. The inlet of claim 10, wherein said contact pad comprises:

a flat base that rest on said second end of said neutral pin in a plane substantially perpendicular to a longitudinal axis of said neutral pin.

12. The inlet of claim 11, wherein said contact pad further comprises:

a projection that extends outward from an end of said base in a plane substantially parallel to said longitudinal axis of said neutral pin in a direction that is distal from said neutral pin.

13. The inlet of claim 12, further comprising:

an end of said projection that extends out of said opening in said back side of said housing having an aperture formed in an exposed portion of said end.

14. The inlet of claim 1, further comprising:

a second end of said earth spring that extends out of said back side of said housing.

15. The inlet of claim 14, further comprising:

an exposed portion of said second end of said earth spring that has an opening formed through said exposed portion.

16. The inlet of claim 1, wherein said recessed cavity is shaped to prevent electrically incompatible connectors from being connected to said live pin and neutral pin of said connector.

17. The inlet of claim 1, wherein said live pin and said earth spring are spaced apart in said housing to prevent electrically incompatible connectors from being used with said connector.

18. A C6 power inlet, comprising:

a housing having a size substantially equivalent to a size of a standard C8 power inlet and a shape substantially equivalent to a shape of the standard C8 power inlet, the housing forming a recessed cavity having a first cylindrical opening, a second cylindrical opening, and a trench formed along a bottom of a longitudinal axis of the housing and positioned between the first cylindrical opening and the second cylindrical opening;

a live pin enclosed within the first cylindrical opening and protruding out of a back plane of said housing;

a neutral pin enclosed within the second cylindrical opening and protruding out of the back plane of said housing; and

a cantilevered earth spring positioned in the trench, a first end of the earth spring forming a hook portion raised above the trench and protruding beyond the live pin and the neutral pin, wherein the hook portion is reflectable and configured to reduce an impact angle between the earth spring and an earth pin contact of a C5 connector and facilitate a make-first-and-break-last earth contact with the earth pin contact.

19. The C6 power inlet as recited in claim 18, wherein a shape of the recessed cavity prevents other types of connectors from being connected to the live pin and the neutral pin.

20. The C6 power inlet as recited in claim 18, wherein the earth spring further comprises a latch lock positioned near a second end of the earth spring near the back plane of the housing, the latch lock retaining the earth spring in position by applying a force against a first side wall and a second side wall of the trench.

21. The C6 power inlet as recited in claim 18, wherein the earth spring further comprises a stopping hook formed by bending a first end of a bottom portion of the earth spring downward at a substantially 90 degree perpendicular to the longitudinal axis of the earth spring, the stopping hook abutting against a support area formed along the trench.

22. A power inlet for an electric connector, comprising:

a live pin;

a neutral pin;

a housing enclosing the live pin and the neutral pin, the housing having a front side and a back side with a recessed cavity formed within the housing starting from an opening in a surface of said front side, the housing including an elongated trench formed between the live pin and the neutral pin and recessed along a bottom plane of the housing; and

an earth spring having a first end protruding out of said housing into said elongated trench, wherein a portion of said first end of said earth spring is exposed in said trench, a hook portion of said earth spring extending out from said first end of said earth spring distal from said housing and bending under said first end of said earth spring, wherein said hook portion of said earth spring further includes a raised portion of said earth pin that juts out from said trench.