Winner of the bronze vector award in 2024, French company Mecaoctet has created a movable ceiling for a nightclub in the Accor Arena in Paris. For the power supply, the designers rely on slip-ring-free spring cable drums from the igus e-spool series. The vector award jury was highly impressed by the unique technical solution used for the breathtaking light show. 

The movable nightclub ceiling consists of a fragmented mirror measuring 16x15 meters, which is divided into 32 triangular elements, 16 of which are movable. Each of these triangles has two mirror surfaces, one at the top and one at the bottom, with the edge consisting of an SRU LED strip. In combination with spotlights, a breathtaking light show with monumental shapes in motion is created above the heads of the guests. The design challenge was to set the triangles in motion and supply the LED strips with power.

To solve this complex challenge, the engineering team involved chose to rely on three motorized winches, one at each corner of the triangles. For the power supply, the experts chose slip-ring-free spring cable drums from the igus e-spool series, which are fitted with hybrid cables and connected to the centers of gravity of the triangles. 

The stroke for the application is six meters. The speed is 0.5 meters per second. According to Mecaoctet, thanks to the igus solution they were able to avoid using complex coils with rotating collectors—which would have been very expensive and unreliable. Compared to a slider system with cable loops, the solution is also more fail-safe and aesthetically pleasing.

The igus e-spool series are able to confine many different cables within a confined space and uniquely combines two different energy supply systems, puts no tensile load on the cables, can supply energy in all directions (horizontal, vertical, and diagonal), and is available for indoor and outdoor applications. Overall, the final design provided accuracy, reliability, and aesthetics.

For more information, visit igus and Mecaoctet.