Abstract: The invention relates to a releasable snap-in connection between a resilient element and another element, which comprises a snap-in element having a shaft and a snap-in tip, and a snap-in seat. The invention is characterized in that the snap-in element engages at least partially in the snap-in seat and in that the snap-in element comprises a cylinder mounted to be slideable along its shaft for releasing the snap-in connection.

Abstract: A releasable snap connection between an elastically resilient (2) and a preferably rigid member (3), comprising a detent element (4) having a stem (6) and a detent tip (5), and a detent receiving means (7), wherein the detent element (4) at least partially engages into the detent receiving means (7) and the detent element (4) has a sleeve (8) mounted displaceably along its stem (6) for releasing the snap connection (1).

Abstract: A construction system for the rapid assembly of three-dimensional structures, especially shelves, having preferably vertical supports to which structural components, particularly shelves, are releasably attachable, in which the supports pass through drillings or recesses in the structural components. The supports, which comprise spacer sleeves inserted over bar members, are removably connected to the structural components through the use of connecting inserts, which are arranged within a drilling or recess in a structural component secured to the latter via the supports. The spacer sleeves are supported at the connecting inserts, which provides added stability to the structure when assembled.

Abstract: A system for producing three-dimensional structures, especially shelving with preferably vertical uprights to which structural components, especially shelves, are releasably attachable, in which the uprights pass through drillings or recesses in the structural components. There are connecting inserts which can be arranged in the region of a drilling or recess in a structural component and secured to the latter via the uprights.