Device for attaching a cladding panel to a structure

A device for fastening a vertical cladding panel, in particular a glass panel, comprising:

• a crosspiece including a hooking edge;
• a hook intended to be hooked to the crosspiece by a first approach movement during which the hook is brought close to the crosspiece, longitudinally rearwards, above the edge, and then by a second hooking movement by sliding vertically downwards in a hooking direction, the hook including means for fastening on a rear face of the panel;
• means for blocking the upward sliding of the hook in an unhooking direction when it is hooked to the crosspiece;
• wherein the blocking means include a blocking element which is movably mounted on a body of the hook between:
• a release position towards which it is automatically pushed longitudinally rearwards by contact with the crosspiece during the approach movement;
• a blocking position towards which it is elastically biased forwards and in which the blocking element is intended to be fitted under an abutment face of the crosspiece at the end of the hooking movement to prevent the hook from being unhooked.