Height adjustment device of a child seat headrest for vehicle safety.

摘要

1. A height adjusting device headrest for a child's safety seat comprises a vehicle headrest back and on the front of the backrest, characterized in that the height adjustment of headrest further comprises a sliding plate that is located at the front of the backrest and can move up and down along the support, the upper end of the sliding plate is connected movably with a movable frame for fixing the headrest; an elastic plate to bring the movable frame back to its original position is provided between the slide plate and the movable frame; two connection supports hook-shaped are arranged symmetrically on the back of the movable frame, a metal shaft is inserted into the hooks of the supports shaped connecting hook; two positioning blocks are arranged symmetrically on the back of the backrest, taking the positioning blocks each on themselves a plurality of positioning grooves for engaging the metal shaft; blocks for guiding the metal shaft are arranged fixedly on the back of the sliding plate, the guide blocks being for guiding the metal shaft at the rear of the backrest and provided with a channel to allow the metal shaft to slide back and forward in his Rooflining.2. Height adjustment device headrest for a child seat vehicle safety according to claim 1, wherein the channel is arranged in horizontal.3. Height adjustment device headrest for a child seat vehicle safety according to claim 2, characterized in that two guide grooves for guiding a diagonal belt safety moving up and down are disposed symmetrically on the support; corresponding to the guide grooves, two holes diagonal belt safety are arranged longitudinally in the sliding plate, the safety belt is secured to the diagonal support passing through the metal shaft and through holes belt diagonal.4 . Height adjustment device headrest for infant safety seat vehicles according to claim 1, wherein the elastic plate is located on the same side as the slide plate and frame móvil.5. Height adjustment device headrest for infant safety seat vehicles according to claim 4, wherein the elastic plate is a steel plate for resortes.6. Height adjustment device headrest for a child seat vehicle safety according to any one of claims 1 to 5, wherein the movable frame and the slide plate are of a plastic material flexible.7. Height adjustment device headrest for a child seat vehicle safety according to claim 6, wherein the cross section of the movable frame is arc-shaped.