Snap-fit raceway arrangement

DETAILED DESCRIPTION FIG.
1 illustrates a wall panel system 11 formed by a series of interconnected upright prefabricated wall panels, only two substantially identical panels 12 and 12' being illustrated.
Panels of different lengths can be serially interconnected, as by a conventional L-shaped plastic hinge.
Each panel, such as panel 12, includes an integral rigid rectangular frame formed by parallel top and bottom rails rigidly joined together by parallel side rails, the bottom rail 13 being partially illustrated in FIG.
3.
These rails are channel-shaped and open inwardly of the panel, whereby the frame normally confines therein a suitable core structure, such as a honeycomb layer.
The core and frame are normally sandwiched between thin facing sheets disposed on opposite sides of the frame, which sheets in turn are normally covered by layers of fiberglass and fabric, the latter defining the exterior side faces 14 of the panel.
The structure of the panel and wall system as described above is well known, and one such structure is disclosed in U.
S.
Pat.
No.
4,060,294.
Each panel may be provided with a prewired electrical system 16 extending longitudinally along the lower edge thereof, which system includes identical power blocks or terminals 17 and 18 disposed adjacent the opposite lower corners of the respective panel, as illustrated in FIGS.
2 and 3.
Power blocks 16 and 17 are electrically joined together by a plurality of electrically conductive wires which extend therebetween and are disposed within the elongated closed channel 19 which is fixedly but releasably connected to the underside of the bottom frame rail 13.
To transmit electrical energy between adjacent connected panels to thereby define one or more electrical circuits extending longitudinally along the wall system, the opposed power blocks of adjacent panels are electrically but releasably joined together by a flexible electrical connector 21 which creates a plug-in electrical connection with each of the power blocks.
For this purpose, each power block has a pair of plug-in connector portions 22 associated therewith and located on opposite sides thereof, whereby each power block can have two such connectors 21 joined thereto adjacent the opposite sides thereof