Device for height adjustment to chair and desk at school.

摘要

b height adjustment device for chair and table, school " d .This utility model patent refers to the height adjustment device for chair and table, school characterized by presenting the provisions inroduzidas in metallic structure of CadeIRA and school table containing device for height adjustment of school furniture shapes the age group who will use the product.The graduations of heights are mechanical and ergomu00e9tricamente resized.Pair the final product for convenience of handling and the strength of all components belonging to the device which is composed of a tubular profile (1) with grooves (1.1), holes (1).2) and a manu00f3pla (1.3), a steel bar (2) with cuts (2.1), contains a lock (2.2) with spring (2.3) and pressure switch (2.4). Presents the bar (2), a provision of the display (2.5).