

Final Prototype


The unique, dynamic design and small number of parts of the F-Drive allow users to mount the drive on the chair frame without fasteners or tools. Thanks to its compact shape, the F-Drive fits easily under any chair.

Operation principles

Upright Sitting Position
The F-Drive is attached to two struts on the chair without tools. Using a clip fastener on the round tube and a sliding mechanism on the square tube. Once the power source and hand control are connected, the chair is immediately ready for use.


Declined Position
At the touch of a button, the chair gently moves into the desired reclining position, and back to the sitting position just as easily. The movement can be stopped at any time once the desired angle has been reached.


Stress analysis
Topology optimization based on FEM simulations
Optimization of the structure using algorithmic models





Stress analysis
The influence of different forces
Hand Controls
Die TriaLily
Perfection in design and ergonomics





The TriaLily was developed specifically for the F-Drive. Thanks to its ergonomic shape, it fits comfortably in the hand. The upper button moves the chair into the sitting position, while the lower button moves it into the reclining position. The optional swan neck mount allows for convenient operation even when reclining.


Product Visualizations
3D Renderings for striking presentations











