CN2671421Y

CN2671421Y - Shortsightedness protector

Info

Publication number: CN2671421Y
Application number: CN 200320121265
Authority: CN
Inventors: 王富军; 苏纪政; 古荣光; 姚廷英
Original assignee: 古荣光
Priority date: 2003-12-25
Filing date: 2003-12-25
Publication date: 2005-01-19
Anticipated expiration: 2013-12-25

Abstract

The utility model discloses a shortsightedness protector, comprising a desktop holding frame which is fixedly connecting with two supporting ears extended upward, and the supporting ears are axially connected with a supporting bar extended upward and a lifter sleeved inside the supporting bar. The upper end of the lifter is fixedly connected with a spacing plate, and a height adjuster is equipped on the supporting bar and the lifter, and the bottom of the supporting bar is equipped with a transition cambered surface. The utility model can not increase the body burden in order that it is popular with the students in primary and middle schools, the sitting posture of these students can be defined through adjusting the height of spacing plate model when they read and write. The utility model keeps the eyes one inch from the books and keeps the chest one fist from the desk to prompt the students in primary and middle schools to keep an approved reading and writing posture in order to prevent shortsightedness with good effect of preventing shortsightedness.

Description

A kind of myopia-preventing device

Technical field

The utility model relates to a kind of device of pre-myopia prevention, is a kind of myopia-preventing device specifically.

Background technology

According to investigations, China pupil's near-sighted incidence is about 20%, middle school student's near-sighted incidence is about 50%, and in rising trend year by year, and the basic reason that causes this situation is that students in middle and primary schools closely read a book for a long time, write.In order to protect students in middle and primary schools' eyes; pre-myopia prevention; State Education Commission to students in middle and primary schools' reading, writing has proposed the requirement of three " "; be that eyes are far away from books one chi, chest is far away along a fist from table, it is far away from the nib one-inch to point; but because students in middle and primary schools' self-control is poor; the requirement of three " one " can only accomplish that the most of the time returns to incorrect read-write posture again gets on, thereby the requirement of three " " is fallen through in the following short time of prerequisite that has the people to remind.At this situation, the multiple utensil of pre-myopia prevention has appearred on market in succession, as heroic bearing band, shellfish shellfish frame etc., these utensils, be with summer too hot, winter is too tight again, not welcome by students in middle and primary schools, students in middle and primary schools are reluctant to use, naturally also myopia prevention in advance just.

Summary of the invention

The purpose of this utility model provides the effective myopia-preventing device of a kind of students in middle and primary schools myopia prevention easy to carry, pre-.

For achieving the above object, the utility model comprises the desktop holding frame, its design feature is to be connected with the support ear of stretching on two on this desktop holding frame, be connected with the support bar of stretching on the support ear and be sleeved on the interior elevating lever of support bar, the upper end of elevating lever is connected with limiting plate, is provided with arrangement for adjusting height on support bar and elevating lever.

Be provided with the transition cambered surface in the bottom of support bar.

Described arrangement for adjusting height is to be provided with cannelure on the antetheca of support bar, by being provided with the locking column that is inserted on the elevating lever bottom in this cannelure, is provided with a plurality of holes of stretching out for locking column on the rear wall of support bar.

On the antetheca of support bar, be provided with and highly point out scale.

From the above mentioned, this myopia-preventing device, students in middle and primary schools needn't be worn on one's body but be placed in the school bag at ordinary times, do not increase body burden, thereby are subjected to students in middle and primary schools' welcome; In reading, when writing, limit students in middle and primary schools' sitting posture by the height of regulating limiting plate, make that eyes are far away from books one chi, chest is far away along a fist from table, impel students in middle and primary schools to form good reading, the posture of writing, prevent the generation of myopia, therefore pre-myopia prevention is effective, and this myopia-preventing device can increase comfort and flexibility that students in middle and primary schools use by the transition cambered surface adjusting angle of strut bottom.

Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is described in further detail:

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the rearview of Fig. 1;

Fig. 3 is the A-A cutaway view of Fig. 1.

The specific embodiment

Myopia-preventing device shown in the drawings, comprise desktop holding frame 1, desktop holding frame 1 comprises last plate and the lower disk board that links together with riser, on lower disk board, be provided with bolt, on this desktop holding frame 1, be connected with the support ear of stretching on two 2, be connected with support bar of stretching 3 and the elevating lever 4 that is sleeved in the support bar 3 by rotating shaft 11 on the support ear 2, the upper end of elevating lever 4 is connected with limiting plate 5, on support bar 3 and elevating lever 4, be provided with arrangement for adjusting height, this arrangement for adjusting height, be on the antetheca of support bar 3, to be provided with cannelure 8, by being provided with the locking column 6 that is inserted on elevating lever 4 bottoms in this cannelure 8, on the rear wall of support bar 3, be provided with a plurality of holes 10 of stretching out for locking column 6, make elevating lever 4 can relative fixed on the diverse location of support bar 3, be provided with transition cambered surface 7 in the bottom of support bar 3, this transition cambered surface 7 is processed into the right angle of the antetheca side on support bar 3 base plane circular-arc, to guarantee that support bar 3 can rotate to user one side together with elevating lever 4, but increase comfort and degree of regulation, be provided with on the antetheca of support bar 3 simultaneously and highly point out scale 9, the height of easy of rise bar 4 relative support bars 3 is regulated.

Claims

1, a kind of myopia-preventing device, comprise desktop holding frame (1), it is characterized in that on this desktop holding frame (1), being connected with the support ear of stretching on two (2), be connected with the support bar of stretching (3) on the support ear (2) and be sleeved on the interior elevating lever (4) of support bar (3), the upper end of elevating lever (4) is connected with limiting plate (5), is provided with arrangement for adjusting height on support bar (3) and elevating lever (4).

2, myopia-preventing device according to claim 1 is characterized in that being provided with transition cambered surface (7) in the bottom of support bar (3).

3, myopia-preventing device according to claim 1 and 2, it is characterized in that described arrangement for adjusting height, be on the antetheca of support bar (3), to be provided with cannelure (8), by being provided with the locking column (6) that is inserted on elevating lever (4) bottom in this cannelure (8), on the rear wall of support bar (3), be provided with a plurality of holes (10) of stretching out for locking column (6).

4, myopia-preventing device according to claim 1 and 2 is characterized in that being provided with on the antetheca of support bar (3) and highly points out scale (9).