CN2137469Y - Myopia-proof desk - Google Patents

Abstract

The utility model relates to a myopia-proof desk whose drawer case is arranged at the right side of the right leg of the human body under a desk top, the place where the edge of the desk top near the body is provided with a myopia-proof bracket device, and movable feet are connected with desk legs through a bolted construction. The height of the desk is adjustable, the students obtaining reasonable viewing distance is guaranteed, and the distance between students` eyes and objects can be effectively controlled by using the myopia-proof bracket when necessary to help the students to prevent nearsightedness.

Description

Myopia-proof desk

The utility model relates to the student's desk field.

Desk design in the school is reasonable inadequately at present, except that majority does not have the height regulatory function, adjusting desk height also can be limited under desktop even its drawer case is horizontally set with, or can not guarantee that the student obtains the reasonable sighting distance of (25～33 centimetres), or hinders the placement of student's legs and feet.Because student particularly pupil's height is limited.

With eye too closely is to cause a large amount of students to suffer from that bathomorphic primary crucial pathogenesis---this is investigated confirmation repeatedly by medical circle.Desk stool in the school misfits, and can not guarantee reasonable sighting distance, is not just adding student self posture, have with eye distance from having only about 10 centimetres, (can both see in various places school) write on the classroom and for a long time so must be caused myopia.

People once desk closely at one's side edge the anti-close rack device is set in order to control student sighting distance, but because previous reasons---the design of desk drawer case is unreasonable can't to guarantee reasonable sighting distance, and anti-close rack also just can't effectively use.

Have in the national standard (1983-12-15 announce GB3976-83) a desk drawer case left side if right scheme of establishing, it is bigger that desktop is transferred the leg locus.The perpendicular drawer case of establishing that takes over meets people's right hand and writes the word location custom that health takes back that takes over.But this kind table height can not be regulated, and can not guarantee that still the student obtains rational sighting distance.

" desk and chair dipping control " (number of patent application 87200264U day for announcing 87.10.14) proposes with screw one fixture to be installed on the tables and chairs leg, by bolt one movable part is connected on the fixture, height of table top can be regulated in the connecting hole position that changes on the movable part.The many structures of these scheme materials are complicated slightly, and this scheme does not consider that the drawer case is horizontally set with the adjusting of meeting obstruction desk on the desk, thereby can't guarantee that the student obtains rational sighting distance yet.

The purpose of this utility model is for the student designs a kind of desk that can guarantee its reasonable sighting distance, and the not timing of student self posture can be used anti-close rack control sighting distance again effectively, thus when solving the student written industry with the too near problem of eye.

The utility model combines aforementioned schemes, i.e. the perpendicular right side that is located at the right leg of human body position under the desktop of the drawer case of desk, desktop closely at one's side edge be provided with the anti-close rack device, different characteristics be: connecting movable pin in the table leg bottom with bolt.

Be provided with some through holes that are used for connection activity pin in the bottom of table leg.

Movable pin can be an angle steel.

On movable pin, be provided with some through holes that are used to connect table leg.The desk height can be regulated in the position, hole that change activity pin is connected with table leg.

The utility model has the advantages that movable pin and table leg firm and reliable connection are simple in structure, the big desk height adjustment range in dead zone is also big under the desktop, do not influence student's shank placement space, can guarantee fully that by regulating the desk height student obtains rational sighting distance, and then can guarantee that anti-close rack height suitable (the anti-close rack oneself height is fixed, and its suitable location is that the anti-close rack cross bar is in lower jaw front lower place 1～3 centimeters) controls sighting distance effectively and do not influence normally and write.Result of use is obvious, helps helping the student to prevent myopia.

Accompanying drawing 1 is the structure chart of single desk for preventing myopia.

Accompanying drawing 2 is structure charts of double desk for preventing myopia.

Accompanying drawing 3 is structure charts of movable pin.

Embodiment: with the drawer case 1 perpendicular right side that is located at the right leg of human body position under the desktop of desk, the drawer box top links to each other with the desktop bottom surface (contrast accompanying drawing), and the drawer case highly is more than the twice of its left and right sides width vertically.Height is desirable 300 millimeters in the drawer case opening part, conveniently to put into Coke bottle.Desk closely at one's side edge anti-close rack device 2 is set.In the table leg bottom, be drilled with the through hole of 2～3 horizontal directions, adjacent holes is apart from identical.Movable pin 4 can be an angle steel, and the one sidetracking has some through holes, and adjacent holes is apart from equating and identical with the pitch-row of the adjacent through-holes of table leg bottom.With bolt 3 movable pin is fixed on the table leg outside, the position, hole that is connected with the desk leg on the change activity pin can reach the purpose of regulating the desk height.

Can be made into single (seeing accompanying drawing 1) or double (seeing accompanying drawing 2) desk for preventing myopia according to the utility model design principle.

The desk for preventing myopia that uses in school according to the utility model design principle can be divided into high, normal, basic third gear or height second gear (the stool chair that matches with this desk also correspondingly is divided into some class by highly different) because the Height Adjustable students in middle and primary schools of satisfying of desk obtain the requirement of reasonable sighting distance by its starting altitude.Production, use and convenient management.

To the single desk for preventing myopia that uses within the family, its movable pin should be grown, and adjustable range should be greatly.

Also can be on stool according to principle, at stool leg bottom connection activity pin at table leg bottom connection activity pin.

The desktop of desk for preventing myopia, drawer case, table leg and framework adopt timber to make, and cost hangs down and is suitable for popularization.

Claims (4)

1, a kind of desk for preventing myopia, its drawer case 1 perpendicular right side that is located at the right leg of human body position under the desktop, desktop closely at one's side edge be provided with anti-close rack device 2, it is characterized in that: connecting movable pin 4 with bolt 3 in the table leg bottom.

2, desk for preventing myopia according to claim 1 is characterized in that: be provided with some through holes that are used for connection activity pin 4 in the table leg bottom.

3, desk for preventing myopia according to claim 1 is characterized in that: movable pin 4 can be an angle steel.

4, according to claim 1 or 3 described desk for preventing myopia, it is characterized in that: on movable pin 4, be provided with some through holes that are used to connect table leg.

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