Seismic perimeter clip for suspended ceiling grid
A perimeter clip is made of a single piece of sheet metal and includes first and second legs that are bent at approximately 90 degrees with respect to each other. The first leg is for engaging the vertical leg of a wall angle. The second leg is adapted to receive the head or bulb of the runner. The first leg includes an upper portion and a lower portion. The upper portion of the first leg forms a back plate that is displaced from the plane of the lower portion, with a generally horizontal ledge connecting the upper portion to the lower portion. The first leg has a tongue or tab that is displaced from the plane of the remainder of the lower portion so that, when in place, the vertical leg of the wall angle is held between the tongue and the remainder of the lower portion. The upper portion of the second leg comprises an inverted, generally U-shaped member, the open end of which forms a trough that supports the lower surface of the bulb of the runner.
1. A clip for attaching a runner for a suspended ceiling grid to a wall angle, the runner having an inverted T-shape with a strengthening bulb at the upper end thereof extending from a web and the wall angle having an L-shape with a vertically-extending leg, the clip comprising:
a first leg adapted to be mounted to the vertically extending leg of the wall angle comprising a substantially planar upper portion and a substantially planar lower portion, the upper portion being displaced from the lower portion, a generally horizontal ledge joining the upper portion to the lower portion, and a tongue depending from the upper portion so that the vertical leg of the wall angle may be received between the tongue and the lower portion of the first leg; and
a second leg adapted to receive the bulb of the runner comprising a downwardly opening segment for receiving the bulb of the runner, the opening having a width sized to receive the web and defining a trough to prevent the bulb from passing therethrough in the absence of deformation of the segment, the segment having an open middle portion and a resilient tongue extending into the open middle portion for engaging the bulb of the runner to force it into contact with the trough.
2. The clip of claim 1 wherein the lower portion of the first leg further comprises at least one embossment projecting therefrom toward a plane defined by the tongue.
3. The clip of claim 1 wherein the embossment includes an aperture adapted to receive a fastener.
4. The clip of claim 1 wherein the upper portion of the first leg comprises at least one aperture, adapted to receive a fastener.
5. The clip of claim 1 in which the downwardly-opening segment of the second leg further comprises a lower portion extending generally vertically from the trough along one side of the opening, the lower portion being adapted to lie along the web of the runner and having at least one aperture therein adapted to receive a fastener for positive securment of the clip to the runner.
6. The clip of claim 1 in which the downwardly-opening segment of the second leg further comprises a lower portion extending from the trough along one side of the opening, the lower portion forming an oblique angle with respect to the web of the runner.
7. The clip of claim 1 wherein the downwardly-opening segment of the second leg comprises a top that has an arcuate cross-section.