A chassis suitable for attaching an infant vehicle seat to a vehicle seat, such an assembly and an infant vehicle seat

A chassis suitable for attaching an infant vehicle seat to a vehicle seat, in which the chassis can be detachably attached to the vehicle seat, whilst the infant vehicle seat can be detachably connected to the chassis. The chassis comprises a number of locating pins which are movable against spring force, a slide which is movable against spring force, and a number of locking pins which are movable by means of said slide. The locking pins can be moved from a first position, in which they are positioned in the chassis, to a second position, in which they engage in the infant vehicle seat.