| 摘要 |
An adjustably lockable bar hanger support for mounting a ceiling box or the like to a floor/ceiling joist includes a male and a female support member each being generally L-shaped and each having a generally elongate leg adapted for slidable telescoping engagement with the elongate leg of the other member and a relatively short leg adapted for attachment to the joist. As preferably embodied, the male member elongate leg is slidable within the female member elongate leg, and the female member is formed with a detent tab of its elongate leg, which is adapted to be deflected into a receiving aperture formed in the elongate leg of the male member for locking the male and female members in assembled relationship when the tab and aperture are aligned. Advantageously, at least two receiving apertures are formed in the male member elongate leg at locations which, when positioned adjacent the detent tab, correspond to predetermined inter-joist spacings. Also advantageously, and as preferably embodied, the apertures are sufficiently long to enable small adjustments to the length of the assembled bar hanger for accommodating irregularities in or variations from the nominal inter-joist spacing when mounting the hanger support to the joists.
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