Abstract: A rail assembly includes a first rail formed with a stopping protrusion, and a second rail mounted slidably on the first rail and formed with an engaging protrusion. The engaging protrusion includes a head body that has opposite top and bottom ends and that gradually reduces in cross-section from the top end to the bottom end. The bottom end of the head body is formed with a curved nose that protrudes downwardly therefrom and that is blocked by the stopping protrusion when the second rail is moved frontwardly to a front position relative to the first rail. The head body is elastically deformable so as to be compressed by the stopping protrusion to an extent that the nose is able to slide over the stopping protrusion when the second rail is further moved frontwardly from the front position by a pulling force.

Abstract: A bed panel assembly includes a vertical bedpost, a bed panel having a connecting end with a positioning piece that has neck and head portions, and a retaining unit mounted on the bedpost. The retaining unit includes a base plate having a retaining hole with large and small hole sections and a first passage, and a retainer having two resilient arms that confine a clamping hole for receiving the neck portion and that respectively include free ends which define a second passage therebetween. The free ends are resiliently movable away from each other to enlarge the second passage when the neck portion is forced to pass through the same.