Foldable car cup holder

Foldable car cup holder, attached to the headrest in a Ford S-max 2008, or in any car that has the headrest bars 15cm apart and their diameter is approximately 12mm.I own an older Ford S-max 2008, when I travel somewhere with children there was always a problem where to put the cups for drinks, I know that there are many universal cup holders, but I wouldn't be a real 3D "maniac" not to make it to measure for myself.I created many pieces that were stationary but I didn't like that because those holders constantly stuck into the passenger compartment and so I made a new design where I modeled a snap system using two springs and they ensure that the holder can be folded into a vertical position when not in use and thus does not get in the way at all. The springs jump over a small "toothing" and this securely blocks the entire drink holder against spontaneous falling into the position for use with drinks.During construction, 2 pieces of M4x55 and M4 nuts are needed