Twist lock optical holder for recessed lighting

摘要

A recessed lighting optical holder for a recessed lighting fixture, comprises a retainer 100 having a generally annular shape, including a resilient snap projection 105 formed on an inner circumference and resilient beam 130 supported at both ends on an outer circumference. The beam slides into engagement with a heat sink extension 122 on a bottom portion of a circular heat sink 110, when a top surface of the retainer is positioned against a bottom portion of the heat sink and the retainer is rotated with respect to the heat sink, to lock the retainer to the heat sink. An optic 120 has a generally conical shape, with a bottom portion surrounded by circular lip 125 that snaps into holding engagement with the snap of the retainer, to positively retain the optic. The holder is relatively simple to manufacture and is conveniently accessible for installation and occasional maintenance or replacement.

主权项

1. A recessed lighting optical holder, comprising:
(a) a retainer having
a generally annular shape that includes an outer circumferential surface that is generally cylindrical except at locations of one or more clearance slots,an inner circumferential surface,a top surface, anda bottom surface, the retainer including
a resilient snap projection on the inner circumferential surface of the retainer andone or more resilient beams, each of the resilient beams being located at least partially within a corresponding one of the one or more clearance slots in the outer circumferential surface of the retainer,
each of the one or more resilient beams being generally shaped as a circular segment,each resilient beam of the one or more resilient beams being attached to the retainer at a first radial end and a second radial end of the resilient beam, such that a radial gap forms between the retainer and the resilient beam, between the first radial end and the second radial end of the resilient beam,each of the one or more resilient beams being configured to slide into engagement with a heat sink extension on a bottom portion of a circular heat sink, when the top surface of the retainer is positioned against the bottom portion of the circular heat sink and the retainer is rotated with respect to the heat sink,each of the one or more resilient beams being configured to be deflected by the heat sink extension as the retainer is rotated, to lock the retainer to the heat sink; and (b) an optic having a generally conical shape, with a narrower top portion and a broader bottom portion, having a circular lip surrounding the bottom portion,
the circular lip being configured to snap into holding engagement with the resilient snap projection formed on the inner circumferential surface of the retainer.