Vehicle anchorage system for child seat

A vehicle having a vehicle structure including a vehicle seat having a seat back and a seat cushion intersecting at a seat bight, and a vehicle anchorage system for securing a child seat on the vehicle seat, comprising:

• two lower anchorage assemblies each having a fixed member secured to the vehicle structure, an anchor having a latchable portion for releasable engagement with a lower child seat tether hook at the seat bight, and an energy absorbing mechanism operable above a first predetermined force threshold to provide a limited forward displacement of the anchor and the lower child seat tether hook;
• and
• an upper anchorage assembly having a fixed portion secured to the vehicle structure, a latchable portion for releasable engagement with an upper child seat tether hook, and an energy absorbing mechanism operable above a second predetermined force threshold to provide a limited forward displacement of the latchable portion and the upper child seat tether hook;
• wherein the upper anchorage assembly includes a flat plate having the latchable portion and a longitudinally extending slot rearward of the latchable portion, the fired portion includes a U-shaped clamp bracket, a friction plate fixed to an underside of the clamp bracket, and a bolt extending through the clamp bracket, the friction plate and the slot in the flat plate and is secured to the vehicle structure, wherein the flat plate may translate relative to the bolt, and the energy absorbing mechanism is provided by frictional interference between the friction plate and the flat plate such that a frictional force must exceed the predetermined threshold in order for the flat plate to translate.