Myopia-prevention chair for middle school student

Abstract

The invention relates to an anti-myopia chair for middle school students, which includes a bottom plate, a support column, a sliding seat, a sliding rod, an upper plate, a hydraulic cylinder fixing plate, a hydraulic plate, a hydraulic pedal, an adjustment seat, a through hole, a rotating shaft, a sliding plate, screws, Rectangular groove, locking seat and shoulder strap, a support column is installed under the bottom plate, a sliding seat is installed above the bottom plate, the sliding seat is slidably connected with a sliding rod, and the upper part of the sliding rod is fixed on the lower end surface of the upper plate , the present invention is novel in structure and scientific in design. The middle school student sticks the back of the middle school student on the sliding plate through two straps and a locking seat. The structure is simple, the operation is simple, the lifting is convenient, and it can perform precise rising and falling operations, which greatly improves the device. It is practical, has a wide range of applications, has a long service life, and has a safe and reliable effect. It can effectively prevent middle school students from reading and writing incorrectly, and effectively prevent myopia.

Description

technical field [0001] The invention relates to a chair for middle school students, in particular to an anti-myopia chair for middle school students. Background technique [0002] Myopia is also called short-sightedness, because this kind of eye can only see near but not far. When in a resting state, the parallel light from infinity is refracted by the eye's refractive system and then converges into a focal point in front of the retina, forming an unclear image on the retina. At present, middle school students have a lot of homework, and students have to deal with a large amount of homework for a long time, which has a great impact on the eyes. At the same time, when students are writing homework, they tend to bow their heads to do homework without paying attention, which will cause most middle school students to suffer from severe myopia. The current chair , Can not carry out accurate ascending and descending operation, the practicability of device is low, can't prevent mi...

AI Technical Summary

Problems solved by technology

At present, middle school students have a lot of homework, and students have to deal with a large amount of homework for a long time, which has a great impact on the eyes. At the same time, when students are writing homework, they tend to lower their heads to do homework without paying attention, which will cause most middle school students to suffer from severe myopia. The current chair , can not perform precise ascending and descending operations, the practicability of the device is low, and it is impossible to prevent middle school students from reading and writing postures incorrectly

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