Device for retensioning the straps used in child seats

The purpose of this invention is a device for retensioning the straps used on the child seats applicable to vehicles, by which, in case of a collision that may cause the movement of the base and the seat coupled to it, manages to retension the straps, securing the child more firmly in the seat by means of the two straps, to achieve the retensioning effect, this device links the straps with the anchoring mechanisms of the children's car seat that are at the base of the seat, more specifically the lower rear ends of the straps are linked to the pneumatic means that activate the anchoring mechanisms, and these ends can be secured to the base of the seat or to the anchoring mechanisms.