CN201480469U - Nearsightedness preventing lifting desk and stool - Google Patents

Abstract

The utility model discloses a nearsightedness preventing lifting desk and stool, which consists of a pad layer, a supporting plate, a supporting frame, an 'L'-shaped slab, barrel nipples, a pad plate, an upper drawer frame, a lower drawer frame, a reinforcing angle iron, a mask, a gasket, a book holder, a telescopic sleeve, height fixing holes and a control switch, and is characterized in that: the supporting plate is welded with the elbow of the supporting frame; the two sides of the supporting frame are connected with the 'L'-shaped slab through the lifting barrel nipples; the 'L'-shaped slab is welded with the upper drawer frame; the pad plate is fixed with pad plate connecting holes by bolts; the four corners of each drawer frame are welded with the reinforcing angle iron; the mask is fixed by welding and pressing through the gasket; the book holder is connected with book holder holes by bolts; and the telescopic sleeve is welded with the upper and lower drawer frames. With the lifting desk stool, a seat with a standard height difference adaptive to the height of a student can be fixed through adjustment; the supporting frame and the supporting plate of a lifting nearsightedness preventing device can be used to support the chest and chin of the student to force the student to sit up straightly, so that a nearsightedness preventing writing and reading effect that the eyes are kept at a distance of one third meter from a character target on a book or exercise book can be achieved, and the opportunities for getting nearsighted can be reduced and the happening and development of nearsightedness can be prevented in tens of years of study.

Description

The myopia prevention Up-down desk and stool

Affiliated technical field

The utility model relates to a kind of mechanical assistance educational aid of being made up of myopia prevention device and Up-down desk and stool; it with adjustable bracketing frame and bracketing plate effectively bracketing live chest; jaw portion makes the forehand of health seat straight; constitute eye and books font target and draw back myopia prevention write-read effect about one chi; utilize table stool adjusting device; adjust the read-write standard seat difference of height that adapts with height; help the student along with growth needs; remain a mandatory vision protection standard that can reach " reading and writing posture will be rectified; the font target range of eyes and books will keep a chi " of State Education Commission's regulation; a suitable standard seat table stool difference of height is arranged all the time; both acquire scientific and cultural knowledge to satisfy the student, and can avoid and alleviate bathomorphic the development to greatest extent again.

Background technology

At present, known student's desk is not provided with myopia prevention and elevation and subsidence regulating device, is necessary by scientific and technical principle, and myopia prevention device and elevation and subsidence regulating device are done further research elaboration:

One, myopia prevention device belongs to a kind of assist, and it is used to help the student to keep the correct read-write posture of a chi, a fist.

People's eyes are when the target of seeing beyond 5 meters, do not need to regulate, see that 5 meters then need to regulate with interior target, the degree of regulation of human eye D commonly used represents, its computational methods are D=100/f with the cms of its anomalistic distance except that 100, target is nearer, and the degree of regulation of use is bigger, when target needs 2 dioptric adjustings during apart from 50 centimetres of eyes, in the time of 25 centimetres, need 4 dioptric adjustings, distance during less than 25 centimetres needed degree of regulation sharply rise, the tensity of adjuster must increase like this.The adjusting power of children's eye is very strong, and the age is more little, and adjusting power is strong more, and they can be concordant with the table edge with books, approaches books and carries out the Vee formation read-write.General ten to 20 years old teenager; the adjusting power of eyes is 14-10 diopters; if but when read-write books from very near; target has only 7-8 centimetre apart from eye; then its degree of regulation D is 100/8,100/7; equal 14 (D) degree or 12 (D) degree; even whole adjusting power have all been consumed inadequately; therefore feel asthenopia, so that myopia takes place, keep the distance of a chi (33 centimetres) during read-write; D equals 3 diopters; not usefulness of diopter that 7-8 stores is still arranged, so unconsciously tired, eyesight also can be protected.

Utilize some servicing units; help the teenager on suitable table stool difference of height desktop; when writing; the correct read-write posture that can keep a chi one fist; form good sitting posture custom; reach the purpose of vision protection; it also is the current myopia incidence of disease (the general primary school 20% that sharply raises; middle school 50%; university 80%) become the social concern of people's common concern; wish that the breakthrough development of energy is a kind of than prior art advanced person, science, practicality, cheap mandatory myopia prevention assist.

Existing pre-myopia prevention is corrected and is kept the teenager correctly to read and write the existing patent applications such as chair, table, platform, folder, frame of position.These patent applications all are difficult to reach the ideal effect of one chi, one fist when seeing written word till now, for various reasons, can not reach the purpose of practical popularization.

Two, Up-down desk and stool

At present, known desk stool is not provided with elevation and subsidence regulating device, just can not reach the purpose of regulating seat table stool difference of height along with growing tall of student yet, have to make the desk stool of different size standard from the kindergarten top class in a kindergarten to university.What very big a part of school usefulness from one grade to six grades was arranged all is the desk stool of a size, promptly from first grade of primary school, " enjoyment " all be desk stool seat difference of height " treatment " more than six grades.But the student can not grow equally high stature along with the increase at age, and always having height has shortly, and does not have " extremely " desk stool of lowering or hoisting gear, extremely difficult satisfy is the student of various heights, the needs of a suitable seat table stool difference of height are provided.Brainstrust has drawn the cry of " it is long-range that the tables and chairs that fall behind are left a legacy of trouble to " after the old desk stool old-fashioned to these carries out the science assessment

Be responsible for the exercise supervision section chief of school hygiene section of Hubei Province Disease Control and Prevention Center of management of school hygiene is opened along pointing out straight from the shoulder in the lane, the height size of some primary school's tables and chairs is constant all the year round now, can not satisfy growing fast of pupil, the physical and mental health that is unfavorable for the student, constant all the year round desk and chair is compared with ever-increasing height, has fallen behind.

" the children's health care head of the department doctor Wang Feng of Hubei Province healthcare hospital for women ﹠ children thinks that then desk and chair not growing way must bring out student's incorrect sitting-pose.Correct sitting posture is shank and thigh, and thigh becomes 90 degree respectively with height.The teenager is in the critical period of body development, and abnormal sitting posture really can cause diseases such as myopia and spinal curvature, and deformity of spinal column can influence the cardiopulmonary blood circulation again, breathes and digestive function, and lung capacity is reduced ".

In addition, owing to sit uncomfortablely, can often adjust sitting posture, greatly take sb's mind off sth, some teachers can be considered as this " touching " oneself disrespect berated greatly especially, if things go on like this will greatly influence students'interest in learning, cast a shadow psychologically at it, these harm must cause concern.(drawing Wuhan electricity, reporter Li Peng Xiang, Hou Fangfeng) from Xinhua News Agency

We test the new desk stool difference of height of certain county town central primary school one grade, this class student 56 people, 56 on desk, 56 on stool, unified table is high 78 centimetres, stool is high 43 centimetres, table stool difference of height is 35 centimetres, these data just with the classmate seat difference of height of 160 centimetres of heights, table is high 76 centimetres, and stool is high 43 centimetres, and the junior middle school class that table stool difference of height is 33 centimetres matches, and 110 centimetres of student's height average out to of first grade of primary school, the difference of the seat height of standard should be that table is high 53 centimetres, and stool is high 30 centimetres, and difference of height is 23 centimetres, the seat difference of height of this class than standard seat difference of height desk height 25 centimetres, the stool height 23 centimetres, difference of height is many 13 centimetres, disqualification rate is unexpectedly up to 100%, an average height we can say this class is at 110 centimetres student, the standard seat difference of height " treatment " " enjoyment " junior-senior high school class of entering a school.

The people is short, stool is short, the table is high, and the two short one high seat discrepancy in elevation make classmates once taking lower jaw be shelved on the table, because of drawing back the sighting distance with books, will cause naturally and climb volt on books, is the job state of writing of " eating " word.

People's height, stool height, table are short, and the seat discrepancy in elevation that two-supremes one is short is climbed volt and do not write the operation shape because of having suitable mechanical obstacles restriction, making classmates cause " Laolong eats word " to bend over again.

Make " extremely " table stool can be by lifting " work ", know that height just can be by regulating table stool height, provide one and be fit to that each student conforms to height, its amplitude of accommodation can be from the kindergarten top class in a kindergarten to university, the large span seat table stool discrepancy in elevation that can both adapt to from childhood to old age is research emphasis of the present utility model.

What this problem U.S. did is automatic lifting table stool, and China has also carried out the research of this respect, but because cost is too high, complex structure is made not according to the standard of desk stool, is not promoted widely yet so far.

The simple and clear health and epidemic prevention handbook 145-146 page or leaf that Yunnan health and epidemic prevention station writes has proposed following hygienic requirements to the desk stool, has quoted the height standard scale of desk stool simultaneously, now quotes as follows:

(1) meaning

The desk stool is an educational aid, and not only the needs that should be fit to impart knowledge to students are fit to write, read a book, have a rest, and is fit to human figure, physilogical characteristics, the crowd-student who is particularly growing, and also firm, solid, attractive in appearance, guarantee safety, cheap, do not hinder the cleaning requirement.If desk stool height is improper, on hygiene, easily produce postural defect, easily, influence physiological function to eyesight influence generation myopia, such as breathing, blood circulation ... influence the students' work ability.

(2) hygienic requirements of desk stool

1. table is high, guarantees eye book distance, and table is wide, and guarantee has enough areas when the student writes, and the dark student of making of table accommodates books and writing case.Generally should equal high half as much again of books or forearm adds pushing.

2. the seat height is suitable for the shank height, and the chair height can not be greater than the shank height, otherwise thigh just is under pressure, and chair is dark, equals 2/3 or 3/4 of thigh length, guarantees arm knee long about 70% on seat, and chair is wide to adapt with body wide (shoulder breadth, basin wide).

3. difference between table top and chair top, the high difference with the chair height of the nearly edge of table is a difference between table top and chair top, when chair is high determine after, it is then high for table to add difference between table top and chair top again.Difference between table top and chair top is most important factor in desk and chair.It has the greatest impact to the posture of taking one's seat.

The height standard of desk and chair draw from December, 1979 People's Health Publisher publish 144 pages in " hygiene of children and adolescents " teaching material of the chief editor of Harbin Medical University, see Table 1.Table two has been for to have increased tables and chairs height section code according to table 1, the height pitch-row.

Table 1

The height standard of desk and chair

(unit: centimetre)

Table two

The height standard of desk and chair

(unit: centimetre)

Summary of the invention

In order to correct student's torticollis, collude the back of the body, to bend over, approach books and climb unhygienic with eye custom that volt writes, the utility model desktop has partly designed myopia prevention device.

In order to overcome the deficiency that the desk stool can not adjust the satisfied table stool seat discrepancy in elevation along with the growth of height, the utility model table stool is partly fully according to table 1, the designing requirement of table 2 desk and chair height standard educational aid, improved myopia prevention Up-down desk and stool is provided, it not only can be with the function of combination, produce the up-down desk and chair standard discrepancy in elevation all sidedly, make the student know the height of oneself, just can adjust the standard difference of height table stool that is fit to own seat according to the height locating hole, be used " myopia prevention device ", make the forehand of health seat straight, correct read-write posture when keeping a chi one fist is corrected student's eave tile, bend over, climb the unhygienic of volt read-write with the eye custom.

The technical scheme in the invention for solving the technical problem is: the myopia prevention Up-down desk and stool is by bed course, the bracketing plate, the bracketing frame, following drawer frame, last drawer frame, reinforcing angle, cover plate, packing ring, bookshelf, extension sleeve, the height locating hole, gauge tap is formed, it is characterized in that: bed course and bracketing plate are screwed, bracketing plate and the welding of bracketing frame elbow, bracketing frame both sides are connected by lifting lock beans with " 7 " font band iron, " 7 " font band iron upper end and last drawer frame welding, backing plate and backing plate connecting hole are screwed, four jiaos of drawer frames and reinforcing angle welding, cover plate and weld press fit with packing ring, bookshelf and bookshelf connecting hole are screwed, extension sleeve and the welding of last drawer frame, extension sleeve and following drawer frame welding.

Its design of bracketing plate of installing should reach:

1, supporting plate is inoperative when normal read-write, in case down during the eave tile read-write, to hold down chin effectively, can not make and dodge about it or arbitrarily cross framework, carries out eave tile and reads and writes.

2, bed course must cover in iron plate fully, makes iron plate not cause any collsion damage to the lower jaw skin of contact.

3, the enough roomy bracketing plate of design can cover in the user evades read-write forwards, backwards dead angle, space.

The switching device of the control lifting of design is connect by nut and gauge tap eyelet welding, and screw rod is screwed into the gauge tap hole and changes system into; Extension sleeve is inserted in the little steel pipe that is complementary with big steel pipe, and leggings is inserted in little steel pipe and lands end and form.

With known height height, find out the little steel pipe of the stool height locating hole of mark from the bottom up, tighten the gauge tap of three table stool pin earlier, after treating that a stool steadily, tighten the gauge tap of the 4th the table stool pin that nature lands again, after further balance is steadily finely tuned EP (end of program), can obtain to adapt with height, help healthy read-write, the health standard table stool discrepancy in elevation seat of eye.General just the child in growth period, every two years can up adjust a height seat class.

As can be seen from Table 2, differ 10 centimetres height section, replace, height locating hole 1, represent 110 centimetres of heights by make the height locating hole that note counts from the bottom up on little steel pipe; 2 represent 120 centimetres; 3 represent 130 centimetres; 4 represent 140 centimetres; 5 represent 150 centimetres; 6 represent 160 centimetres; 7 represent 170 centimetres; 8 represent 180 centimetres; For example: know 160-169 centimetre height, find the 6th the height location hole of counting to from the bottom up of the little steel pipe mark of a stool, determine the extension sleeve height, tighten gauge tap, finish the balance of a stool and steadily regulate program, at last the bracketing plate is transferred to satisfied height, is tightened lock beans nut, finish the adjusting program of myopia prevention device.

The beneficial effects of the utility model are: know that height just can adjust the health that is beneficial to that adapts with height and read and write, the health myopia prevention device of eye and the seat discrepancy in elevation of standard, and overcome a table stool pin unbalanced landing fixed factor, article four, leg drops on the ground, always there is one leg to need bed hedgehopping, the table stool could be steadily, by regulating extension sleeve and gauge tap, just the table stool can be laid on the ground reposefully.

Adopt gauge tap, the Metacentre Height of control extension sleeve, simple in structure.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified

Fig. 1 is the right view of the utility model desk

Fig. 2 is the left view of the utility model stool

Fig. 3 I is the insight structural map of the utility model lock beans I type

Fig. 3 II is the insight structural map of the utility model lock beans II type

Fig. 4 is the lock beans vertical view of myopia prevention Up-down desk and stool Fig. 3 II type

Fig. 5 is the utility model screw rod, bullet circle, nut figure

Fig. 6 is bed course of the present utility model, bracketing plate, bracketing block diagram

Fig. 7 is the utility model bed course, bracketing plate, bracketing frame, backing plate, " 7 " font band iron, lock beans assembled sectional view

Fig. 8 is a backing plate of the present utility model, the assembled sectional view of last drawer frame, following drawer frame, big steel pipe, little steel pipe, height locating hole, gauge tap, leggings

Fig. 9 is the utility model whole interior structure right view

Figure 10 is bookshelf of the present utility model, packing ring, reinforcing angle figure

1. backing plates among the figure; 2. " 7 " font band iron; 3. draw shelves; 4, hole under " 7 " font band iron; 5. lock beans I type; 6, lock beans II type; 7, lock beans hole; 8, bullet circle; 9, nut; 10, screw rod; 11, triangle outside plate; 12, bracketing frame; 13, bracketing frame elbow; 14, bracketing plate; 15, bed course; 16, bracketing plate fixing hole; 17, bookshelf; 18, bookshelf connecting hole; 19, bookshelf connecting plate; 20, reinforcing angle; 21, go up drawer frame connecting plate; 22, backing plate connecting hole; 23, go up the drawer frame; 24, following drawer frame; 25, packing ring; 26, cover plate; 27, extension sleeve; 28, big steel pipe; 29, little steel pipe; 30, height locating hole; 31, gauge tap; 32, gauge tap hole; 33, leggings; 34, screw.

The specific embodiment

At Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, among Figure 10, the myopia prevention Up-down desk and stool is by backing plate (1), backing plate connecting hole (22), bed course (15), bracketing plate (14), bracketing plate bed course fixing hole (16), bracketing frame elbow (13), bracketing frame (12), under " 7 " font band iron hole (4), lifting lock beans (5), bookshelf connecting hole (18), last drawer frame (23), following drawer frame (24), " 7 " font band iron (2) extension sleeve (27) gauge tap (31), height locating hole (30), bookshelf connecting plate (18), bookshelf connecting hole (19), cover plate (26), packing ring (25) is formed, and it is characterized in that: backing plate (1) is fixing with screw (34) with backing plate connecting hole (22); Bed course (15) is fixing with screw (34) with bracketing plate fixing hole (6); Bracketing plate (14) and bracketing frame elbow (13) welding; Bracketing frame (12) both sides connect by lifting lock beans (5) or (6); " 7 " font band iron (2) upper end and last drawer frame (23) welding; Extension sleeve (27) and last drawer frame (23) welding; Extension sleeve (27) and following drawer frame (24) welding; Bookshelf (17) is fixing with screw (34) with bookshelf connecting hole (19); The drawer frame covers drawer frame (24) packing ring (25) weldering press fit under plate (26) and the last drawer frame (23).

In the embodiment shown in fig. 8, gauge tap (31) is by nut (9) and gauge tap hole (32) welding; Screw rod (10) is screwed into gauge tap hole (32) and changes system into; Extension sleeve (27) by big steel pipe (28) be inserted in little steel pipe (29) leggings (33) be inserted in little steel pipe land the end form.

In Fig. 3 I, Fig. 5, lock beans (5) insert lock beans holes (7) by bracketing frame (12), screw rod (10) penetrates under " 7 " font band iron hole (4) and puts bullet circle (8) nut (9) and form.

In Fig. 3 II, Fig. 4, Fig. 5, lock beans (6) are by hole (4) welding under nut (9) and " 7 " font band iron, triangle outside plate (11) and the welding of " 7 " font band iron (2) lower end, screw rod (10) is screwed into hole (4) under nut (8) " 7 " the font band iron, and bracketing frame (12) inserts lock beans holes (7) and forms.

Bookshelf in Fig. 9, Figure 10 (17) and bookshelf connecting plate (19) welding; Drawer frame (23) drawer frame (24) welding down on four jiaos of reinforcing angle (20) and the drawer frames.

Claims (2)

1. a myopia prevention Up-down desk and stool is by bed course (15), bracketing plate (14), bracketing frame (12), " 7 " font band iron (2), lock beans (5), backing plate (1), backing plate connecting hole (22), last drawer frame (23), following drawer frame (24), reinforcing angle (20), cover plate (26), packing ring (25), bookshelf (17), bookshelf connecting hole (18), extension sleeve (27), height locating hole (30), gauge tap (31) is formed, it is characterized in that: bed course (15) is screwed with bracketing plate (14), bracketing plate (14) and bracketing frame elbow (13) welding, bracketing frame (12) both sides are connected by lifting lock beans (5) with " 7 " font band iron (2), " 7 " font band iron (2) upper end and last drawer frame (23) welding, backing plate (1) is screwed with backing plate connecting hole (22), four jiaos of drawer frames and reinforcing angle (20) welding, cover plate (26) and weld press fit with packing ring (25), bookshelf (17) is screwed with bookshelf connecting hole (18), extension sleeve (27) and last drawer frame (23), following drawer frame (24) welding.

2. myopia prevention Up-down desk and stool according to claim 1 is characterized in that: gauge tap (31) is by nut (9) and gauge tap hole (32) welding, and screw rod (10) is screwed into gauge tap hole (32) and changes system into; Extension sleeve (27) is inserted in little steel pipe (29), leggings (33) by big steel pipe (28) and is inserted in little steel pipe (29) and lands end and form.

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