| 摘要 |
<p>The support rail to which the accessory is to be fixed has a 'T' shaped slot which runs throughout its length. The device has a male threaded portion (2), with a 'T' shaped head (3), which fits into the slot and a female threaded portion (5). The female threaded portion is cylindrical and has a smooth external finish (4) and a head at its closed end with a slot (6) for a screwdriver. The male portion is clipped into the rail and the female portion is screwed, through a hole in the accessory, onto the male to clamp the accessory solidly against the support rail.</p> |
