Abstract: Wheel suspension for road vehicles, in particular non-power-driven semi-rigid axles for private cars and light commercial vehicles having a crossmember defining an axle, axle carrier or swinging axle link and trailing arms attached at both ends of the crossmember, whereby the trailing arm features an arrangement for attachment to the vehicle and for mounting the wheel. The trailing arms are extruded single or multi-chamber hollow sections, made for example of aluminum or one of its alloys. The trailing arms feature a projection facing the middle of the vehicle. The projections on the trailing arm form a channel-shaped section along with the wall strip of the trailing arm. Attachment structure for attaching the elements for wheel suspension and for the crossmember of the axle or axle carrier or swinging axle link may be mounted on this channel-shaped section.

Abstract: Push-fit connecting joints comprising a node and at least one hollow section, where the node contains attachment parts and the attachment parts feature openings to accommodate connecting elements, and the hollow section features at least one hollow chamber and at least one opening for the connecting element. The openings in the hollow section are oversized with respect to the corresponding openings in the attachment part and the region of the opening on the outside of the hollow section is covered over by a cover sheet. The cover sheet features for each connecting element an opening having the dimensions of the opening in the attachment part, and an adhesive is provide between the cover sheet and the hollow section. The push-fit connecting joints may be employed in the construction of Space-frame parts.