Abstract: A connection device is disclosed for installing a shelf or a shelf frame on a vertical support to construct a shelving unit The connection device includes a hanger component and a bracket. The hanger component is equipped with a main body designed to be suspended from the vertical support such that an engagement portion engages behind a perforation of the vertical support and a support portion is arranged outside of the perforation. The bracket includes a housing portion designed to rest against the vertical support and a cavity shaped to receive the support portion of the main body of the hanger component. The bracket includes a clamping mechanism for clamping the housing portion of the bracket together with the vertical support when the cavity of the housing portion receives the support portion, and the main body of the hanger component is suspended from the perforation of the vertical support.

Abstract: A structural system for the modular construction of shelves includes a set of elongate vertical supports, a set of frames and a set of connectors. The vertical supports have at least one axially extending row of holes, the frames have four struts, and the connectors are designed to be introduced into a hole a vertical support and secured to a mounting corner piece of a frame. The structural system is designed such that, in an assembled state, a frame of the set of frames is secured by its mounting corner pieces to four vertical supports via a relevant connector, two respective neighboring vertical supports that are connected to one another via one of the struts of the at least one frame define a support plane, and the four struts of the at least one frame lie outside the support planes defined by the four vertical supports connected to the frame.