The simple swivel joints, provided between the seat-sided load-bearing shell and the backrest-sided load-bearing shell, and the detachable rear locking mechanism exhibit a simple,
inexpensive design and require very little space. In particular, the swivel joints, as seen in the transverse direction of the vehicle, require very little space and exhibit negligible weight. For example, one middle or two lateral swivel snap locks may be used as the locking mechanism. In a simple 60 design the swivel snap lock makes possible, on one hand, a stable anchoring of the upright backrest section on the seat section and, on the other hand, guarantees a simple forward swivel ling of the backrest section onto the seat section.
The load-bearing shells, which are made of a fiber-rein- forced plastic, in particular a carbon fiber-reinforced plastic, exhibit negligible weight and due to their multi-shelled structure in certain places, high strength. In addition, the carbon look on the outside of the respective outer shell of the load-bearing shell imparts to the bucket sports seat a high-class appearance.