Terminal with strain relief

• US 9,543,667 B2
• Filed: 10/15/2014
• Issued: 01/10/2017
• Est. Priority Date: 10/21/2013
• Status: Active Grant

• Current Assignee: Leviton Manufacturing Company Incorporated
• Original Assignee: Leviton Manufacturing Company Incorporated
• Inventors: Kamor, Michael, Kevelos, Adam, Ancipiuk, Walter, Williams, Michael, Alderson, R. David
• Primary Examiner(s): LEON MUNOZ, EDWIN A
• Application Number:
  US14/515,285
• Publication Number:
  US 20150111440A1
• Time in Patent Office: 818 Days
• Field of Search: 439801-815, 439/709, 439/539, 439/719, 439/723, 439/107, 175/51, 175/57
• US Class Current: 1/1
• CPC Class Codes: H01R 24/78 with additional earth or shield contacts
• CPC Class Codes: H01R 4/305 having means for facilitating engagement of conductive member or for holding it in position
• CPC Class Codes: H01R 4/34 Conductive members located under head of screw

Abstract

A wiring device terminal may include a contact having an aperture formed therethrough for receiving a fastener. One or more conductors may be engaged in the terminal directly between the fastener and the contact without requiring a pressure plate. When the fastener is tightened, the one or more conductors may be securingly held between the contact and the fastener.

Claims

1. A wiring device terminal for receiving a conductor, the terminal comprising:

a. a contact comprising;

i. a substantially planar surface having an aperture formed therethrough; and

ii. at least one tab extending from an exposed side of the contact, the at least one tab arranged and configured to engage the conductor; and

b. a fastener adapted and configured to pass through the aperture and selectively and securingly engage the conductor;

wherein when the conductor is inserted into the terminal it is secured directly between the contact and the fastener and is engaged by the at least one tab providing strain relief for the conductor.

2. The terminal of claim 1, wherein the at least one tab extends from the exposed side of the contact in a generally perpendicular direction.

3. The terminal of claim 1, wherein the terminal is one selected from the group consisting of a ground terminal, a line terminal, a load terminal, or a neutral terminal.

4. The terminal of claim 1, wherein the contact is integral with and extending from a mounting strap.

5. The tenninal of claim 1, wherein the contact further comprises a plurality of ridges extending across at least a portion of the substantially planar surface of the contact, wherein the plurality of ridges provide friction between the contact and the conductor.

6. The terminal of claim 1, wherein the contact further comprises a protrusion extending from the substantially planar surface of the contact, the protrusion arranged and configured to position the conductor under the fastener when the conductor is compressed between the contact and the fastener.

7. The terminal of claim 1, wherein the fastener is one selected from the group consisting of a serrated head fastener or a washer head fastener.

8. The terminal of claim 1, wherein the tab comprises a notch to receive the conductor.

9. The terminal of claim 1, wherein the tab comprises a first end and a second end, wherein the first end extends higher than the second end.

10. The terminal of claim 8, wherein the notch comprises a plurality of surfaces that contact the conductor, wherein at least one of the plurality of surfaces position the conductor underneath the fastener and at least one of the plurality of surfaces bends the conductor to provide strain relief for the conductor.

11. The terminal of claim 1, wherein the contact further comprises a cut out formed therethrough, wherein the cut out is arranged and configured to position an end of the conductor therein and to secure the conductor while the conductor is being assembled in the terminal.

12. The terminal of claim 11, wherein the at least one tab comprises first and second protrusions spaced a distance apart.

13. The terminal of claim 1, wherein the fastener further comprises a head and a body, wherein the body is adapted and configured to pass through the aperture formed in the contact, and wherein the head includes a bottom surface that is adapted and configured for selectively and securingly engaging the conductor.

14. A wiring device terminal for receiving a conductor, the terminal comprising:

a. a contact comprising;

i. a substantially planar surface having an aperture formed therethrough; and

ii. at least one protrusion extending from the substantially planar surface, the at least one protrusion arranged and configured to engage the conductor; and

b. a fastener adapted and configured to pass through the aperture and selectively and securingly engage the conductor;

wherein when the conductor is inserted into the terminal it is secured directly between the contact and the fastener and is engaged by the at least one protrusion providing strain relief for the conductor.

15. The terminal of claim 14, wherein the terminal is one selected from the group consisting of a ground terminal, a line terminal, a load terminal, or a neutral terminal.

16. The terminal of claim 14, wherein the contact is integral with and extending from a mounting strap.

17. The terminal of claim 14, wherein the at least one protrusion comprises a living hinge.

18. The terminal of claim 14, wherein the at least one protrusion comprises first and second protrusions spaced a distance apart.

19. The terminal of claim 14, wherein the contact further comprises a plurality of ridges extending across at least a portion of the substantially planar surface of the contact, wherein the plurality of ridges provide friction between the contact and the conductor.

20. The terminal of claim 14, wherein the at least one protrusion comprises first and second L-shaped protrusions, the first and second protrusions each having a first end that is flush with an exposed side of the contact and a second end having a living hinge arranged and configured on an inner portion of the contact, wherein the first protrusion is arranged and configured on one side of the aperture and the second protrusion is a mirror image of the first protrusion and arranged and configured on an opposite side of the aperture.

21. The terminal of claim 14, wherein the at least one protrusion is substantially U-shape and arranged and configured to partially surround the aperture.

22. The terminal of claim 14, wherein the fastener is one selected from the group consisting of a serrated head fastener or a washer head fastener.

23. The terminal of claim 14, wherein the fastener further comprises a head and a body, wherein the body is adapted and configured to pass through the aperture formed in the contact, and wherein the head includes a bottom surface that is adapted and configured for selectively and securingly engaging the conductor.

24. The terminal of claim 14, wherein the contact comprises a plurality of protrusions, and wherein each of the plurality of protrusions includes a curved portion to engage the respective conductors.

25. The terminal of claim 24, wherein the contact further comprises a plurality of ridges, the plurality of ridges extending across at least a portion of the substantially planar surface of the contact between the plurality of protrusions and the aperture, wherein the plurality of ridges provide friction between the contact and the conductor.

26. The terminal of claim 24, wherein each of the plurality of protrusions include a curved portion to engage the respective conductors.

27. A wiring device terminal for receiving a conductor, the terminal comprising:

a. a contact comprising;

i. a substantially planar surface having an aperture formed therethrough; and

ii. a plurality of indents, the plurality of indents arranged and configured around the aperture so that a first set of the plurality of indents is positioned on one side of the aperture and a second set of the plurality of indents is positioned on an opposite side of the aperture; and

b. a fastener adapted and configured to pass through the aperture and selectively and securingly engage the conductor;

wherein the conductor may be engaged in the terminal directly between the contact and the fastener, and wherein the plurality of indents provide friction between the contact and the conductor.

28. The terminal of claim 27, wherein the fastener is one selected from the group consisting of a serrated head fastener or a washer head fastener.

29. The terminal of claim 27, wherein the fastener further comprises a head and a body, wherein the body is adapted and configured to pass through the aperture formed in the contact, and wherein the head includes a bottom surface that is adapted and configured for selectively and securingly engaging the conductor.

30. A wiring device terminal for receiving a conductor, the terminal comprising:

a. a contact comprising;

i. a substantially planar surface having an aperture formed therethrough; and

ii. at least one protrusion extending from the substantially planar surface, the at least one protrusion arranged and configured to engage the conductor; and

b. a fastener adapted and configured to pass through the aperture and selectively and securingly engage the conductor;

wherein the conductor may be engaged in the terminal directly between the contact and the fastener, and wherein the at least one protrusion provides strain relief for the conductor, and wherein the at least one protrusion comprises first and second L-shaped protrusions, the first and second protrusions each having a first end that is flush with an exposed side of the contact and a second end having a living hinge arranged and configured on an inner portion of the contact, wherein the first protrusion is arranged and configured on one side of the aperture and the second protrusion is a mirror image of the first protrusion and arranged and configured on an opposite side of the aperture.

31. A wiring device terminal for receiving a conductor, the terminal comprising:

a. a contact comprising;

i. a substantially planar surface having an aperture formed therethrough; and

ii. a plurality of ridges, the plurality of ridges arranged and configured around the aperture so that a first set of the plurality of ridges is positioned on one side of the aperture and a second set of the plurality of ridges is positioned on an opposite side of the aperture; and

b. a fastener adapted and configured to pass through the aperture and selectively and securingly engage the conductor;

wherein the conductor may be engaged in the terminal directly between the contact and the fastener, and wherein the plurality of ridges provide friction between the contact and the conductor.

32. The terminal of claim 31, wherein the fastener is one selected from the group consisting of a serrated head fastener or a washer head fastener.

33. The terminal of claim 31, wherein the fastener further comprises a head and a body, wherein the body is adapted and configured to pass through the aperture formed in the contact, and wherein the head includes a bottom surface that is adapted and configured for selectively and securingly engaging the conductor.