Student chair adjustable in height

Abstract

The invention discloses a height-adjustable student chair, which comprises a bottom plate, supporting side plates are arranged on both sides of the lower end of the bottom plate, an upper movable frame is fixedly installed on the lower end of the supporting side plate, and the lower movable frame is fixedly installed on the bottom frame. An upper horizontal frame is fixed between the two upper movable frames, a lower horizontal frame is fixed between the two lower movable frames, studs are fixed on the lower horizontal frame, a bearing seat is fixedly arranged at the lower end of the upper horizontal frame, and the bearing seat The upper end of the connecting shaft is fixedly connected to the inner ring of the connecting shaft. The connecting shaft is a hollow structure, and its lower end is fixedly installed on the upper end of the turntable. There is a threaded hole in the middle of the turntable, and the turntable is movably installed on the stud through the threaded hole. When the present invention is used, the turntable is rotated, and the turntable moves up and down through the thread structure between the turntable and the stud. The rotation of the turntable drives the connecting shaft to rotate, and at the same time, the connecting shaft moves up and down on the stud, thereby driving the bearing seat to move up and down, and then driving the upper horizontal The frame moves up and down to achieve the purpose of adjusting the seat bottom to make it suitable for the height of the student.

Description

technical field [0001] The invention relates to the field of education, in particular to a height-adjustable student chair. Background technique [0002] At present, the height of the chairs used by middle school students in the classroom cannot be adjusted, and the heights of the students are different. As a result, taller students mostly sit in the back row of the classroom, while shorter students sit in the front row of the classroom. The balance of class students' grades will also affect students' vision on the other hand. The Chinese invention patent with the application number 201611000380.4 proposes a teaching chair, which adjusts the height of the seat plate in the bushing through the movable rod provided, and the movable rod can be fixed by the limit bolt passing through the bushing. This invention can adjust the height of the seat to a certain extent, but when adjusting, it is necessary to unscrew the limit bolt with the help of a special tool, and at the same tim...

AI Technical Summary

Problems solved by technology

This invention can adjust the height of the seat to a certain extent, but when adjusting, it is necessary to unscrew the limit bolt with the help of a special tool, and at the same time, it is sleeved on the sleeve through a single movable rod to realize the support of the seat plate. This support structure is extremely unstable and has a short service life, so we propose a height-adjustable student chair to solve the above problems

Images