Push-in bulb base for bayonet-type bulb sockets

• US 5,669,703 A
• Filed: 12/28/1995
• Issued: 09/23/1997
• Est. Priority Date: 12/28/1995
• Status: Expired due to Fees

• Current Assignee: Square D Company (Schneider Electric SE)
• Original Assignee: Square D Company (Schneider Electric SE)
• Inventors: Wheeler, Keith D., Sehmer, Robert
• Primary Examiner(s): CARIASO, ALAN B
• Application Number:
  US08/579,710
• Time in Patent Office: 635 Days
• Field of Search: 362/226, 362/249, 362/457, 362/800, 362/806, 439/336, 439/337, 439/356, 439/611, 439/616, 313/318.01, 313/318.12
• US Class Current: 362/249.04
• CPC Class Codes: F21V 19/006 of point-like light sources, e.g. incandescent or halogen lamps, with screw-threaded or bayonet base of sources having contact pins, wires or blades F21V19/0005; of LEDs or sources mounted on printed-circuit board F21V19/001
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: H01R 33/46 for bayonet type base
• CPC Class Codes: Y10S 362/80 Light emitting diode

Abstract

A push-in bulb base for use in a bayonet-type bulb socket. The push-in base does not require turning of the bulb base to engage the retaining bayonets of the bulb base in the L-shaped retaining slot of the bulb socket. The push-in bulb base has integrally formed flexible retainers which flex inward during installation and then flex back to their normal position to engage the L-shaped retaining slots of the bulb socket. An integrally formed alignment rib prevents the bulb base from being inserted into the bulb socket in a position that would prohibit the engagement of the retainer with the L-shaped retaining slot.

Claims

1. A push-in bulb base for being received and retained in a commercially available bayonet-type bulb socket having at least one L-shaped retaining groove or slot, said bulb base comprising;

a body being generally cylindrical in shape and dimensioned to be slidably received within the bulb base;

at least one electrical terminal, said electrical terminal extending through said body generally along its longitudinal axis such that an electrical connection can be made with an electrical terminal of the bulb socket;

means for selectively retaining said bulb base in the bulb socket, said retaining means being normally biased to a first position wherein said retaining means engages a horizontal leg of the L-shaped groove or slot of the bulb socket and movable to a second position in response to pushing said bulb base into the bulb socket or pulling said bulb base from the bulb socket, and;

means for aligning said bulb base in the bulb socket such that said retaining means is properly aligned with the horizontal leg of the L-shaped groove or slot.

2. The bulb base of claim 1 wherein said means for retaining includes a retaining lever integrally formed from said body and being flexibly attached to said body at a proximate end, said retaining lever having a distal end movable said first between and second positions.

3. The bulb base of claim 2 wherein said retaining lever further includes a retainer integrally formed from said distal end, said retainer extending outwardly from said retaining lever and being generally perpendicularly to said body such that said retainer is selectively received in and engaged with the horizontal leg of the L-shaped groove or slot when said retaining lever is in said first position and thereby retaining said bulb base in the bulb socket.

4. The bulb base of claim 3 wherein said retainer includes a lead-in surface for slidably engaging an edge of the bulb socket.

5. The bulb base of claim 4 wherein said retainer is generally wedge-shaped cross-section.

6. The bulb base of claim 4 wherein said retainer is generally hemispherical in shape.

7. The bulb base of claim 6 wherein said retainer includes a short generally flat surface at its intersection with said retainer lever for providing a positive engagement with the horizontal leg of said L-shaped groove or slot.

8. The bulb base of claim 1 wherein said means for aligning includes an alinging rib integrally formed from said body, said aligning rib being generally rectangular in shape and extending outwardly and generally perpendicularly to said body, said aligning rib being slidably received in a vertical leg of the L-shaped groove or slot as said bulb base is pushed into the bulb socket.

9. The bulb base of claim 1 wherein said body further includes an upper portion for slidably receiving at least one printed circuit board on which a plurality of LED'"'"'s are connected.

10. A push-in bulb base for being received and retained in a commercially available bayonet-type bulb socket having at least one L-shaped retaining groove or slot, said bulb base comprising;

a generally cylindrical body dimensioned to be slidably received within the bulb socket;

at least one electrical terminal, said electrical terminal extending through said body generally along its longitudinal axis such that an electrical connection can be made with an electrical terminal of the bulb socket;

at least one retainer lever integrally formed from said body and flexibly connected to said body at a proximate end such that a distal end is normally in a first position and is movable to a second position in response to said bulb base being pushed into the bulb socket;

retaining means integrally formed from said distal end of said at least one retainer lever such that said retaining means selectively engages a horizontal leg of the L-shaped groove or slot of the bulb socket thereby retaining said bulb base in the bulb socket, and;

means for aligning said bulb base in the bulb socket such that said retaining means and the horizontal leg of the L-shaped groove or slot are properly aligned.

11. The bulb base of claim 10 wherein said means for aligning includes at least one alignment rib integrally formed from said body and positioned to be slidably received in a vertical leg of the L-shaped retaining groove or slot of the bulb socket.

12. The bulb base of claim 10 wherein in said first position said retaining means extends outward from said body and in said second position said retaining means is biased by an inside surface of the bulb socket to a position generally flush with an outside surface of said cylindrical body.

13. The bulb base of claim 10 wherein said body further defines a relief immediately adjacent said retainer lever such that said retainer lever is received within said relieve as said retainer lever is moved to said second position.

14. The bulb base of claim 10 wherein said retaining means includes a lead-in surface for slidably engaging the inside surface of the bulb socket.

15. The bulb base of claim 14 wherein said retainer is generally wedge-shaped cross-section.

16. The bulb base of claim 14 wherein said retainer is generally hemispherical in shape.

17. The bulb base of claim 16 wherein said retainer includes a short generally flat surface at its intersection with said retainer lever for providing a positive engagement with said horizontal leg of said L-shaped groove or slot.

18. The bulb base of claim 10 wherein said bulb base includes a second retainer lever diametrically opposed to said at least one retainer lever, said second retainer lever having a retaining means at its distal end for engaging a second horizontal leg of a second L-shaped retaining groove or slot diametrically opposed to the at least one L-shaped retaining groove or slot of the bulb socket.

19. A push-in base for being received and retained in a bayonet-type bulb socket having at least one L-shaped retaining groove or slot, said base comprising;

a generally cylindrical body dimensioned to be slidably received within the bulb socket and defining at least one electrical terminal passage extending through said body generally along its longitudinal axis;

at least one electrical terminal being substantially received within said at least one terminal passage such that an electrical connection can be made with an electrical terminal of the bayonet-type bulb socket;

at least one retainer lever integrally formed from said body and being flexibly connected to said body at a proximate end such that a distal end is movable between a first position and a second position in response to said base being pushed into the bayonet type bulb socket;

retaining means integrally formed from said distal end such that said retaining means selectively engages a horizontal leg of the L-shaped groove or slot of the bulb socket, and

means for aligning said base in the bulb socket such that said retaining means is properly aligned with the horizontal leg of the L-shaped groove or slot and said at least one electrical terminal of said base is properly aligned for making contact with a particular electrical terminal of the bulb socket.

20. The bulb base of claim 19 wherein said means for aligning includes at least one alignment rib integrally formed from said body and positioned to be slidably received in a vertical leg of the L-shaped retaining groove or slot of the bulb socket.

21. The push-in base of claim 19 wherein in said first position said retaining means extends outward from said body and in said second position said retaining means is biased by an inside surface of the bulb socket to a position generally flush with an outside surface of said body.

22. The push-in base of claim 19 wherein said body further defines a relief immediately adjacent said retainer lever such that said retainer lever is received within said relieve as said retainer lever is moved to said second position.

23. The push-in base of claim 19 wherein said retaining means includes a lead-in surface for slidably engaging the inside surface of the bulb socket.

24. The push-in base of claim 23 wherein said retainer is generally wedge-shaped cross-section.

25. The push-in base of claim 23 wherein said retainer is generally hemispherical in shape.

26. The push-in base of claim 25 wherein said retainer includes a short generally flat surface at its intersection with said retainer lever for providing a positive engagement with said horizontal leg of said L-shaped groove or slot.

27. The push-in base of claim 19 wherein said bulb base includes a second retainer lever diametrically opposed to said at least one retainer lever and having a retaining means at its distal end for engaging a second horizontal leg of a second L-shaped retaining groove or slot diametrically opposed to the at least one L-shaped retaining groove or slot of the bulb socket.

28. The push-in base of claim 19 wherein said base includes an upper portion for slidably receiving at least one printed circuit board having a plurality of LED'"'"'s attached thereto.

29. The push-in base of claim 28 wherein said electrical terminal of said base is electrically connected to said printed circuit board.

30. The push-in base of claim 29 wherein additional said printed circuit boards are slidably received on said upper portion, each of said additional printed circuit boards being spaced apart one from another by a spacer slidably received on said upper portion.

31. The push-in base of claim 30 wherein said additional printed circuit boards are electrically connected together by a pin-type electrical connector.

32. The push-in base of claim 28 wherein said base further includes a top plate attached to said upper portion, said top plate for protecting said printed circuit boards and providing a handle for inserting and removing said base from the bulb socket.

33. A push-in bulb base for being received in a bayonet-type bulb socket integrally formed from and substantially enclosed by a translucent housing, the bulb socket having at least one L-shaped retaining groove or slot, said bulb base comprising;

a body generally cylindrical in shape and dimensioned to be received within the bulb socket, said body defining at least one electrical terminal passage extending generally along its longitudinal axis and having an upper portion for slidably receiving at least one printed circuit board having a plurality of LED'"'"'s attached thereto;

at least one electrical terminal being substantially received within said at least one terminal passage and electrically connected to said at least one printed circuit board, said electrical terminal providing an electrical connection between said at least one printed circuit board and an electrical terminal of the bayonet-type bulb socket;

means for selectively retaining said bulb base in the bulb socket, said retaining means being normally biased to a first position wherein said retaining means engages a horizontal leg of the L-shaped groove or slot of the bulb socket and movable to a second position in response to pushing said bulb base into the bulb socket or pulling said bulb base from the bulb socket, and;

means for aligning said bulb base in the bulb socket such that said retaining means is properly aligned with the horizontal leg of the L-shaped groove or slot and said electrical terminal of said bulb base is properly aligned for making contact with a particular electrical terminal of the bulb socket.

34. The bulb base of claim 33 wherein said means for retaining includes a retaining lever integrally formed from said body and being flexibly attached to said body at a proximate end, said retaining lever having a distal end movable between said first and second positions.

35. The bulb base of claim 34 wherein said retaining lever further includes a retainer integrally formed from said distal end, said retainer extending outwardly from said retaining lever and being generally perpendicularly to said body such that said retainer is selectively received in and engaged with the horizontal leg of the L-shaped groove or slot when said retaining lever is in said first position and thereby retaining said bulb base in the bulb socket.

36. The bulb base of claim 35 wherein said retainer includes a lead-in surface for slidably engaging an edge of the bulb socket.

37. The bulb base of claim 36 wherein said retainer is generally wedge-shaped cross-section.

38. The bulb base of claim 36 wherein said retainer is generally hemispherical in shape.

39. The bulb base of claim 38 wherein said retainer includes a short generally flat surface at its intersection with said retainer lever for providing a positive engagement with the horizontal leg of said L-shaped groove or slot.

40. The bulb base of claim 33 wherein said means for aligning includes at least one alignment rib integrally formed from said body and positioned to be slidably received in a vertical leg of the L-shaped retaining groove or slot of the bulb socket.

41. The push-in base of claim 34 wherein said body further defines a relief immediately adjacent said retainer lever such that said retainer lever is received within said relieve as said retainer lever is moved to said second position.

42. The push-in base of claim 34 wherein said bulb base includes a second retainer lever diametrically opposed to said at least one retainer lever and having a retaining means at its distal end for engaging a second horizontal leg of a second L-shaped retaining groove or slot diametrically opposed to the at least one L-shaped retaining groove or slot of the bulb socket.

43. The push-in base of claim 33 wherein additional said printed circuit boards can be slidably received on said upper portion, each of said additional printed circuit boards being spaced apart one from another by a spacer slidably received on said upper portion.

44. The push-in base of claim 43 wherein said additional printed circuit boards are electrically connected together by a pin-type electrical connector.

45. The push-in base of claim 33 wherein a top plate is attached to said upper portion, said top plate for protecting said printed circuit boards and providing a handle for inserting and removing said base from the bulb socket.

46. The push-in base of claim 33 wherein said alignment means includes the geometric cross-sectional shape of the translucent housing and said at least one printed circuit board having a corresponding cross-sectional shape such that it can be slidably received within the translucent housing in only one orientation.

47. The push-in base of claim 33 wherein said alignment means includes at least one aligning rib extending longitudinally along an inside surface of the translucent housing and at least one corresponding peripheral slot in said at least one printed circuit board.

48. The push-in base of claim 45 wherein said alignment means includes at least one aligning rib extending longitudinally along an inside surface of the translucent housing and at least one corresponding peripheral slot in said top plate.