Highness control device of desk and chair's

摘要

The height adjustment mechanism of the bookshelf of the present invention, when adjusting the height of the bookshelf by the height checking device installed on the upper end of the lower column, as a conventional sound, the user clicks on the bookshelf without having to check the horizontal position by the eye directly through the confirmation hole. The height of the bookshelf can be checked more conveniently because the height of the bookshelf can be adjusted, and the height of the bookshelf can be firmly fixed as it is. It is.;The height adjustment sphere on the bookshelf of the present invention is fixed between the lower support 100 on the bookshelf and the upper support 200 to adjust the height adjustment of the height on the bookshelf, but;The height adjustment port 10 is inserted into the upper end of the lower column 100, the control body 11 is fixed to the outer periphery of the lower column 100 by a fixing bolt 14;;The screw hole 15 is formed on one side of the adjusting body, and the screw fixing penetrates the screw hole 15 through the height adjusting holes 201 of the lower column 100 and the upper column 200, and fixes them by screwing. 12;;The height confirmation device which is inserted into the lower inner space 16 of the adjusting mechanism main body when the operator adjusts the height of the bookshelf while generating the sound while the operator emerges to the height adjustment hole 201 formed on the outer periphery of the upper column 200 It consisted of (13).;Height adjuster, adjuster body, adjuster pin, height check device, fixing bolt, screw hole, space part, 1st bracket, 2nd bracket, operator, spring