CN2392435Y - Correct-read-write-posture holder for preventing myopia - Google Patents

Abstract

The utility model relates to a correct read-write posture holder for preventing myopia, which is suitable for primary and secondary school students to keep a correct read-write sight distance. The utility model solves the problem that students can not adopt or keep a correct read-write posture in self-consciousness for a long time. The utility model is characterized in that the utility model is provided with a transverse support frame which can be extended for three times towards the left and the right, and can be raised for four times towards the top and the bottom, an upright support frame extends upwards at a 24 DEG back rake, and the transverse support of the transverse support frame adopts a sponge block and a bag leather sleeve as the whole cover. When students read and write, the utility model can prevent an erroneous read-write posture to prompt the students to adopt and keep the correct read-write posture and the standard read-write sight distance in self-consciousness for a long time. Therefore, the utility model has the function of preventing myopia, crooked view, strabismus, drowsiness, and hunchback.

Description

The correct read-write posture retainer of a kind of myopia prevention

The utility model relates to a kind of student and learns appurtenance, and especially a kind of students in middle and primary schools of being applicable to keep correctly reading and writing the device of sighting distance.

In present prior art, this class device (or apparatus) that is used for the pre-myopia prevention of students in middle and primary schools generally adopts and is worn on student's head or is worn on its chest or all ties up on one's body common feature, bend over to bow at the student, myopia due to crookback and the lateral bending, askew looking, habitual error postures such as stravismus (behavior) by this device or apparatus the enforceable restriction that physical action produced and the posture restriction is carried out in the read-write activity in its study to stopping function and posture is located, thereby overcome and correct the student in study at ordinary times above-mentioned bad habit and force it to adopt and keep correct read-write posture, therefore these devices are given birth to myopia and bow-backed this respect in the prophylactic hair tonic and have been given full play to speciality separately and obtained separately in various degree good effect, but eventually because of them because the side effect of product itself is big or use inconvenience or the too high factors such as (ability to bears that has exceeded most consumers) of its cost (price) to fail all the time generally to promote the use of in numerous students in middle and primary schools, the device that constitutes by multi-ribbon that proposes of the patent No. 93213645.1 for example, when the student uses, this device is worn, by its several strips from both shoulders to behind by enclosing mutually between waist, its five forces of generation that interact form a kind of strength that pushes away forward between waist, make the people feel to have and rely on sense, both shoulders form a kind of strength toward post-tensioning, such one pushes away one draws the custom that can force the people to straight up and keep one's chin up to keep forceful figure, so it can stop and correct student's wrong read-write posture and force it to adopt and keep correct read-write posture, but, owing to wearing, this device directly acts on human body, therefore its mandatory and product itself is from hindering and limited some normal physiological activity of student in varying degrees, this side effect the student perform physical exercises with other non-read-write activities in more obvious, and often service time one is long, can make health that the sense of discomfort is arranged, also can make the people produce the sense of feeling of oppression and heat and not free (not nature) in the summer of sweltering heat, because it wears, conversion along with season, the increase and decrease of clothes, it is also not quite convenient to use, and its cost quite high (ability to bear that has exceeded most consumers), general home-usely do not rise generally promoted the use of so be difficult among the numerous teenagers (students in middle and primary schools).

The purpose of this utility model is to provide a kind of simple in structure, cost is low and easy to use mainly is installed in stop positioner on the lifting desk, bowing that it can be when the student need read and write prevent fundamentally effectively at first directly that it from occurring at ordinary times traditionally bent over, the formation of the too short wrong read-write posture of sighting distance due to the crookback, meanwhile again correspondingly " guiding " and impel it to adopt correct read-write posture and reached or approaching standard reading/writing distance is kept muchly correct read-write posture produces, finish up to each study, can adjust elongation 3 times about this device also has simultaneously, can adjust rising 4 times up and down, and adapt to the use needs of the different height students of junior all ages and classes from the first grade of primary school to the junior middle school.

The purpose of this utility model is achieved in that with the thick sheet metal of 2.5mm makes " T " font lateral frame and the perpendicular support with trapezoidal supporting base base plate, horizontal segment length 180mm of lateral frame wherein, wide 22mm, a perpendicular segment length 138mm of lateral frame, wide 20mm, fuse and form " T " font lateral frame at the upper end end face of perpendicular section of the center position about bottom surface, long limit below horizontal section of lateral frame and its, get out the equidistant screw of 4 Φ 4mm respectively in turn to the mid point of this center line along its cross central line by the pitch-row of 10mm from the mid point 10mm of distance two ends broadside at the right and left of horizontal section of this lateral frame, in that the pitch-row by 20mm gets out the equidistant screw of 6 Φ 5mm in turn to its vertical center line of lower edge apart from the mid point 20mm place of perpendicular section upper end broadside of this lateral frame, and to make the right-angle side minor face of two congruences be 7mm, length of side limit, right angle is 13mm, hypotenuse be 15mm right angled triangle (piece) respectively symmetric arrays prop up anyhow in perpendicular intersection point place, the left and right sides that intersects vertically of horizontal of lateral frame and its disjunctor and with it and fuse; Make the long 70mm that two areas equate with the thick sheet metal of 2mm again, about horizontal flexible piece of the lateral frame of wide 22mm, get out the equidistant screw of 5 Φ 4m on the flexible piece of on the left side to the right in turn along its cross central line by the pitch-row of 10mm from the mid point 20mm of left end broadside apart from it, 5 screwhole position symmetries on the flexible piece in these 5 screws and the right, the diameter of screw is identical with pitch-row, simultaneously the two ends, the left and right sides of horizontal of lateral frame and about the outer end of two flexible pieces respectively by with 5.5mm length being four corners that circular arc that radius is drawn goes them, then with the inclination angle (getting 10 ° here) of pulling back 9 °～11 ° before perpendicular interfaces alignment that intersects vertically of its disjunctor of horizontal Zhi Congyu of lateral frame for good, to call top rake in the following text; And then make a perpendicular support with trapezoidal supporting base base plate, should erecting of perpendicular support prop up a segment length 144mm, wide 20mm, lower end and the long 50mm of upper base in this perpendicular section, long 102mm goes to the bottom, the center position of the isosceles trapezoid base plate of the high 86mm in two ends about this trapezoidal base plate is gone to the bottom fuses with it, on this trapezoidal base plate, get out the screw of 7 Φ 4mm respectively to upper base from its two waists of going to the bottom, and the right and left above this trapezoidal base plate is gone to the bottom (the right and left of perpendicular section lower end of promptly perpendicular support) makes the equal long 41mm of two areas, the cuboid supporting base reinforcement block of wide 17mm the right and left respectively simultaneously with going to the bottom of this trapezoidal base plate form 86 ° 30 ' angle and fuse, and get out the equidistant screw of 6 Φ 5mm in turn to its vertical center line of lower edge by the pitch-row of 20mm apart from the mid point 15mm place of its upper end broadside at perpendicular Duan Shangcong of this perpendicular support, then above trapezoidal base plate is gone to the bottom about on two supporting base reinforcement blocks respectively from respectively get out the screw of two Φ 4mm respectively along their cross central line at the right and left by the pitch-row of 20mm apart from the mid point 10mm of their two ends, left and right sides broadsides, meanwhile make form between the rib of inboard, lower end, perpendicular section left side of the right-hand member broadside of left side cuboid supporting base reinforcement block and perpendicular support 23 °～24 ° 40 ' angle, form between the left end broadside that makes the right cuboid supporting base reinforcement block and the rib of perpendicular section inboard, lower end, right side of perpendicular support 23 °～24 ° 40 ' angle (get 24 ° here, erect the support back rake angle) to call in the following text; The right-angle side minor face of making two congruences with the thick sheet metal of 2.5mm respectively is 8mm again, length of side limit, right angle is the back rake angle fixed block of 16mm, and stick on these two fixed blocks on two angle limits of perpendicular the section left and right sides, lower end of perpendicular support back rake angle respectively with 502 seccotine sticks, the right-angle side minor face of doing two congruences again is 8mm, length of side limit, right angle is the back rake angle reinforcement block of 17mm, and two reinforcement blocks are sticked on the surface of two the back rake angle fixed blocks in front respectively, then all parts of this device are all sprayed grass green and spray paint; Again about horizontal flexible piece of lateral frame placed the right and left at horizontal the back side respectively, and about making on the flexible piece four circular arcs after the chamfering respectively with horizontal two chamfer after four circular arcs overlap fully, make on the flexible piece in the left side along several the 1st screws and the 3rd screw plays the 2nd screw with horizontal Zhi Zuoduan respectively and the 4th screw coincides (its screw contraposition left side and the right symmetry), again each with two set bolts (being again simultaneously flexible adjustment bolt) respectively with about the piece that stretches be fixed on above horizontal; Make a long 250mm then earlier, wide 82mm, naturally the sponge piece of thick 30mm, make a long 290mm with chocolate artificial leather leather again, wide 115mm, the foreskin cover of thick 0.7mm, and the mid point of growing the limit above this foreskin cover front cuts the vertical clip seam of a long 29mm downwards, with this long 180mm, still the state that connects is continued in the cross section that remains on the clip seam about the rectangle of wide 25mm is divided equally into after two rectangles, on these two rectangular positions, paste the long 90mm that two areas equate with quick multi-use mucilage respectively simultaneously, the master tape of the rectangle nylon male and female adhesive tape (claiming bonding button again) of wide 25mm, pasting a long 180mm on the long limit below this foreskin cover back side, the public band of the rectangle adhesive tape of wide 25mm, and at the upward symmetrical respectively equal long 8mm of upper base of two areas of stickup of public two ends, the left and right sides broadside of being with of this adhesive tape (back side of this adhesive tape is that foreskin overlaps positive corresponding position), long 25mm goes to the bottom, the isosceles trapezoid adhesive tape master tape of the high 30mm in two ends, the public band of isosceles trapezoid adhesive tape that two symmetrical respectively of stickups equate with above-mentioned adhesive tape master tape area on the position of the isosceles trapezoid outside the protruding end, center, two ends, the left and right sides at this foreskin cover back side; Then above-mentioned sponge piece (at desired area) is carried out six sides bag really to compress 4/10～7/10 state to horizontal section, simultaneously with above-mentioned foreskin cover positive outwards anti-(back of the body) towards interior to carrying out integral body bag fruit in the lump through horizontal the section of sponge Bao Guohou, and the public band of rectangle adhesive tape that makes this foreskin cover lower rear with the foreskin cover positive above about horizontal two rectangle adhesive tape master tapes arranged side by side mesh comprehensively; The public band of isosceles trapezoid adhesive tape outside the foreskin cover protruding end, left end middle, the back side is meshed with the isosceles trapezoid adhesive tape master tape that foreskin overlaps the positive lower left corner comprehensively; The public band of the outer isosceles trapezoid adhesive tape in foreskin cover protruding end, right-hand member middle, the back side is meshed with the isosceles trapezoid adhesive tape master tape that foreskin overlaps the positive lower right corner comprehensively, thus make bag really sponge piece and the foreskin cover after horizontal obtain positioning and fixing; Again with above-mentioned "T"-shaped lateral frame with carry out assembly with the perpendicular support of trapezoidal supporting seat board, perpendicular section of lateral frame matched with perpendicular section of perpendicular support, perpendicular 6 screws that prop up on the section of lateral frame are overlapped fully with perpendicular 6 screws that prop up on the section of perpendicular support, and put on two set bolts and screw on nut in addition fastening at the upper and lower side of perpendicular section of this coincidence, at last said apparatus is fixed on the center position about the medial surface lower limb of lifting desk (by student's presentation direction) desktop.With a pupil is example, the lateral frame of this device is adjusted to minimum altitude, when the student needs read-write in the face of this device, the horizontal Zhi Shouxian of this device lateral frame contacts with student's chest, when the student desires to bow when bending over to shorten sighting distance, then abut in horizontal formation that directly effectively stops and got rid of its wrong read-write posture naturally of chest, at this moment a horizontal top edge is apart from desktop 144mm, at the bottom of student's lower jaw on average between 2.5～4.5cm, student's eyes are far away near a chi from books, because the effect of perpendicular support back rake angle makes student's body and table limit just in time far away apart from a fist,, horizontal Zhi Chixu watches out for and stops the generation of its wrong read-write posture constantly because reclining with student's chest like a cork, meanwhile, the correct read-write posture that it impels conscious employing of student and permanent maintenance to be kept by this device again, thereby prevent and corrected student's crookback and bent over to cause the bad habit of the too short wrong read-write posture of sighting distance with bowing, correct read-write posture and read-write sighting distance are kept chronically and reach real pre-myopia prevention and bow-backed purpose.

The utility model is compared the useful effect that is had with background technology: the present situation of generally promoting the use of lifting desk and lifting stool according to universities, middle and primary schools throughout the country, in conjunction with the applicant to the investigation of school with to own child, child's neighbours repeatedly observation, discovery is in long-term learning process, no matter many students in middle and primary schools use lifting desk still is common desk, because they lack self-control and consciousness, often can not initiatively adopt the read-write posture correct with conscious maintenance, they myopia often occurs in the same old way when reading or writing even use lifting desk, askew looking, the bad habit of wrong read-write postures such as stravismus and crookback, in view of this problem that can't make the conscious employing of student also keep correct read-write posture for a long time is a problem that is not resolved for a long time, and to stop and get rid of the generation of student's mistake read-write posture in time, guiding and impel the conscious employing of student and the permanent also non-thing overnight of correct read-write posture that keeps, at this problem, the utility model is because only need to install one on the lifting desk that the student uses serve as main with "T"-shaped lateral frame and be the stop positioner of assisting with perpendicular bracket supporting seat, so it is relatively simple for structure, and this device is ability produce effects when the student uses (study) just, produce effects not when not using, therefore, it need not to wear and constantly acts on human body.

With this device---the correct read-write posture retainer of myopia prevention (hereinafter to be referred as retainer) is applied in student's study and with its lateral frame and adjusts to minimum altitude, also Up-down desk and stool is reduced to the minimum altitude or the screw that rises, with a pupil is example, when the student need read and write in the face of retainer, this retainer contacts with student's chest by horizontal (with minimum altitude 144mm) of its lateral frame, the crookback that it had both stoped the student often to occur at ordinary times, bow and bend over and shorten the bad behavior of sighting distance, simultaneously correspondingly force it to reach the books of having hallucinations again naturally, because of perpendicular section of perpendicular support makes student's body just distance one fist is far away with a limit with the recede effect that extends upward and combine with lateral frame of 24 ° back rake angle near chi sighting distance far away.

Because horizontal of this retainer lateral frame can be extended 3 times to the left and right and (generally can prolong once horizontal Zhi Changdu about 4～5 years, also can optionally adjust its length), this lateral frame can upwards raise 4 times simultaneously, when one, when using, second grade pupil is example: example 1: Wang Mingjin with two children of applicant neighbours, the man, 7 years old, height 1.18m, now read one grade, a screw when allowing the king use to be equipped with the lifting desk of retainer rises Up-down desk and stool, lateral frame is adjusted to minimum altitude, and when king's new line was looked squarely the place ahead or direct-view blackboard, its eyes were apart from 9.2 cun of books, horizontal top edge 8.2cm of distance at the bottom of the lower jaw, eyes are apart from 8 cun of books when the king leans over a book, and apart from horizontal top edge 2.5～3.5cm, just a fist is far away from the table limit for body at the bottom of the lower jaw; When using, the last student of three grades and minority senior class is example with another child of applicant neighbours, example 2: He Wei, the man, 9 years old, height 1.32m, now read three grades last issues, allow when how to use the lifting desk that retainer is installed screw of lateral frame rising, and with 4 screws of desk rising, 3 screws of stool rising, its eyes are from books 1.2 chis when what new line is looked squarely the place ahead or direct-view blackboard, horizontal top edge 8.2cm of distance at the bottom of the lower jaw, eyes are from 8.3～9.2 cun of books when he leans over a book, at the bottom of the lower jaw apart from horizontal top edge 2.5～4.5cm, body from the table limit just in time a fist far away (annotate: above-mentioned example shows, comprises 8 years old because of 7 years old, 9 years old pupil the restriction of restriction that objectively is subjected to self age height and desk be have hallucinations when temporarily not reaching read-write books one chi far away but can only be far away near a chi); 2 screws (Up-down desk and stool also is adjusted accordingly) rise lateral frame when senior class and/or five classmans use, make the student when read-write the books that continue to keep having hallucinations just reach chi standard read-write sighting distance far away, be that screw of every rising then makes lateral frame increase 18mm, because the effect of perpendicular support back rake angle makes student's chest from table limit one fist " fist distance " corresponding increase 9mm far away, and the like; 3 screws (with desk 6 or 7 screws that rise, stool rise 6 screws) rise lateral frame when six grades and/or junior middle school's first-year student use; When using, the junior two and/or junior three student be example with another child of applicant neighbours, example 3: He Tao, the man, 15 years old, height 1.55m, now read the junior three, allow when how to use the lifting desk that retainer is installed lateral frame rising 4 screws (maximum height), with 7 screws of desk rising, stool rising 6 screws (stool maximum height), its eyes are from books 44cm when what new line is looked squarely the place ahead or direct-view blackboard, horizontal top edge 14cm of distance at the bottom of the lower jaw, when he bow read-write when overlooking eyes from books at 1～1.2 chi (between 33～39cm), horizontal top edge of distance is between 4～8cm at the bottom of the lower jaw, just in time a fist is far away from the table limit for body, wherein the extra long distance of 33～39cm (6cm) can be considered eyes to books one chi " free travel " far away, so, draw following inference according to above-mentioned experimental example: it far is the distance+to the distance=chi distance far away of its eyes of desk surface+at the bottom of student's lower jaw from books one chi that eyes when constituting pupil reading and writing when retainer uses are installed on same table, but, because even also there is a certain distance (still bigger sometimes gap) unavoidably actually in the height student of the same age of student's height, so, above-mentioned according to the student different terms different heights the adjustment of retainer height is just changed comparatively speaking reference method of adjustment to general student's height, should vary with each individual specifically the actual conditions that increase at the different times height according to the student when using this retainer and optionally carry out the adjustment of retainer height and cooperate the adjustment of table stool height concrete.Because above-mentioned in good time adjustment to the lateral frame height, books one chi is far away so that retainer can control and keep the student to have hallucinations all the time, chest is from table limit one fist gauged distance far away.By 3 child (Wang Mingjin of above-mentioned applicant neighbours, He Wei, He Tao) and applicant's oneself child (Yang Lei, junior two student) etc. the people tries out experiment to the retainer sample and shows, when using this retainer, student's normal read-write activity on the table freedom that looks oneself, freely, and to student's health and healthy no any damage and down good influence and side effect, so, students in middle and primary schools prevent to produce myopia and bow-backed purpose as long as adhere to using this retainer just can reach fully for a long time in study, also overcome the lifting desk shortcoming and defect of myopia prevention in advance simultaneously.

In addition, 8 screws because same table can rise altogether, 7 screws that when junior three student uses retainer, desk risen, the leeway of the screw that then rises in addition; Simultaneously books one chi this principle far away can not continuing to increase and change because of its height because the three grades later students in junior middle school have hallucinations when read-write is overlooked, so, although design of this product and design are to be main object with students in middle and primary schools, based on the lifting desk structure, but can be exactly, this product not only adapts to the use needs from first grade of primary school to the tertion of junior middle school, and in fact also is fit to the high school student and the undergraduate use needs of the different heights of all ages and classes; In addition; this product not only can be installed on the lifting desk and the supporting use of Up-down desk and stool; and can be installed on the common desk of non-lifting and be applicable to the pre-myopia prevention of student of the part school that uses the common desk of non-lifting; its condition only is that a back rake angle that just erecting of the perpendicular support of above-mentioned A-I type retainer is propped up the section lower end increases to 27 ° by former 24 °; other are constant; producing A-II type retainer (desktop that needs only this desk is that the medial surface of cuboid or desktop has the lower limb of two ribs or medial surface that a profile is arranged) thus can be installed in this A-II type retainer on the common desk of the non-lifting of this class; meanwhile; this condition according to " as long as the desktop of this desk is a cuboid "; this A-II type retainer can also be installed in the teachers at different levels that can be adapted to be engaged in for a long time reading writing working on the general writing desk of non-lifting or desk or the desk; the clerical workforce of R﹠D institution and office and be engaged in the books and newspapers editor for a long time and the personnel of secretarial and writing use; involuntary generation is such as myopia when avoiding them to carry out reading writing working sometimes when carrying out reading writing working and/or under tired state; askew looking; incorrect read-write postures such as stravismus and/or while the appearance of reading the badness attitude that (writing) doze off; thereby impel the correct read-write posture of the also long-term maintenance of their conscious employing and the read-write sighting distance of standard; make them normal eyesight can therefore obtain long-term protection, make the twenty-twenty adult of this class that myopia take place never.

In addition; owing to add the foreskin cover of making of the artificial leather leather with a sponge piece with given shape has been installed on horizontal of this retainer lateral frame; comprise that to horizontal flexible piece has carried out whole parcel (before parcel about horizontal; this horizontal long 180mm; wide 22mm; thick 4.5mm; behind parcel; this horizontal long 194mm; wide 35mm; thick 24mm); by this technical finesse; horizontal the section that makes this retainer iron actually is soft like cotton; interior hard outer soft; make student's chest when reclining, the comfortable sense of a kind of softness be arranged as the sofa that reclines with horizontal; and oneself can grasp its elasticity; when reclining, slightly be close to or exert oneself slightly with horizontal; then because the sponge on horizontal is compressed (its compressed thickness is generally between 3～6mm); when student's chest reclines horizontal the time like a cork; pine a bit; pine a bit again; even loose still can therefore form correct read-write posture almost can make it feel not have existing of retainer the time; in addition; because draw sponge piece and foreskin cover of this retainer lateral frame horizontal carried out whole parcel; not only make student's chest produce soft comfortable sense when horizontal contacts; not only eliminated the side effect that retainer may meet accident and damage in student's use; but also can protect horizontal behind parcel not to be subjected to accidental injury; make its anti-collision; indeformable; do not fall lacquer; non-corrosive; wear-resistant, thus its service life can correspondingly be prolonged.

In sum, this retainer can at first stop and get rid of its wrong read-write posture that produces traditionally at ordinary times when the student need read and write, while correspondingly guides and forces it to adopt correct read-write posture again and impels it that standard read-write sighting distance that correct read-write posture produced is kept muchly up to each study and finish, therefore say, though its is simple in structure, but, its above-mentioned double action has solved for a long time can't stop and correct student's crookback in time, immerse oneself in to bend over and shorten sighting distance wrong read-write posture problem and can't make the conscious employing of student for a long time and the long-term problem that keeps correct read-write posture, so, also show according to above-mentioned all situations: it is long that this product has service time, the use object is extensive, safety easy to use, access times are not limit, serviceability is reliable and stable, save material, save the energy, save useful effects such as cost, and because this product structure is simple, according to total cost account and analysis and contrast, its comprehensive cost (or retail price) is equivalent to (20%～25% (promptly buy an aforementioned like product and can buy four retainers at least) of the described like product of this specification homepage, and be equivalent to 5～10 times of aforementioned like product its service life.

Concrete structure of the present utility model is provided by following examples and accompanying drawing thereof.

Fig. 1 is the basic view according to the lateral frame of the correct read-write posture retainer of myopia prevention that the utility model proposes and about horizontal flexible piece;

Fig. 2 is that the perpendicular support of this retainer contains the schematic diagram that supports seat board;

Fig. 3 is that the perpendicular support of this retainer contains the stereogram that supports seat board;

Fig. 4 is the schematic diagram of the horizontal Zhi Liufang bag of lateral frame sponge piece;

Fig. 5 is the schematic diagram at the horizontal Zhi Liufang bag of the lateral frame sponge foreskin cover back side;

Fig. 6 is the positive schematic diagram of the horizontal Zhi Liufang bag of lateral frame sponge foreskin cover.

Describe structure and manufacture method and working condition in detail below in conjunction with Fig. 1～Fig. 6 according to each parts of the concrete device that the utility model proposes.

On the thick sheet metal of 2.5mm, cut off the raw material of a block length 270mm, wide 186mm, with file and emery cloth with the burr on the steel plate, smear metal and iron rust Ex-all sanding, tint then, the lateral frame that marks this retainer respectively by the method for following size and step and plane line with scriber and steel ruler contains the basic view, schematic diagram and the stereogram that support seat board with about horizontal stretch piece and perpendicular support and (adopts the scientific and technical terminology of mathematical expression in the following description, and rectangle is used again Symbolic representation, promptly " rectangle ABCD " write as " ABCD ", square is promptly write as " ABCD " to " square ABCD " with " " symbolic representation).

1, mark the basic view of retainer lateral frame and about horizontal flexible piece: standardized is the horizontal line of the long 180mm of end points with A, W earlier, draw vertical line section AC, the WS of two long 22mm more respectively downwards from two-end-point A, the W of this line segment, the lower extreme point C, the S that link these two vertical line sections again, AWSC.Mark the mid point K of the long limit CS in this rectangle below, cross mid point K intercepts two long 10mm respectively to the left and right along long limit line segment HK, KO, left and right sides two-end-point H, O from these two line segments draws vertical line section HX, the OZ of two long 138mm respectively downwards again, and links lower extreme point X, the Z of two vertical line sections,

HXZO and with

AWSC intersects vertically, just perpendicular to perpendicular of horizontal disjunctor.From mistake

Both sides intersection point point H, the O of HXZO intercepts line segment GH, the OP of two long 7mm respectively to the left and right along horizontal right-angle side, intercept line segment HI, the ON of two long 13mm respectively to the vertical right-angle side in lower edge after intersection point point H, O, difference point of contact G, I, and point of contact P, N, Rt Δ GHI ≌ Rt Δ PON symmetric arrays is propped up fastness and its aesthetic appearance that combines in intersection point place, the left and right sides that perpendicular HXZO and horizontal AWSC intersect vertically and with propping up anyhow to fuse anyhow with enhancing.Mark The mid point B of AWSC left end broadside AC and the mid point U of right-hand member broadside WS, link mid point B, U, get its cross central line BU, and mark the mid point W ' of this center line, the left end point B that crosses this center line delimit 4 equidistant screw points (being the central point of screw) along center line BW ' apart from the some D perforate of some B10mm to the right in turn by the pitch-row of 10mm, left along center line UW ' in turn delimit 4 equidistant screw points from the some J perforate of distance point U10mm by the pitch-row of 10mm after the right endpoint U of this center line; Mark The mid point Y of HXZO lower end broadside XZ, the mid point K, the Y that link its upper and lower side broadside again, get its vertical center line KY, in turn delimit 6 equidistant screw points by the pitch-row of 20mm to lower edge center line KY apart from the some Q perforate of some K20mm from the upper extreme point K that crosses this center line.Mark The mid point V of AWSC right-hand member broadside WU and the mid point T of US, cross vertical line section VS ' and TR that mid point V, T draw two long 5.5mm respectively left, being the center of circle with a S ' again, is that radius is made arc with VS ' length, hands over AW in X ', hand over WS in V, with a R is the center of circle, is that radius is made arc with TR length, hands over WS in T, hand over PS in L ', because of horizontal (

AWSC) right-hand member and left end symmetry, thus in the same way horizontal ( The last inferior horn of left end broadside AWSC) is drawn two arcs with identical radius, in order to fillet (contrast Fig. 1).

Mark the long 70mm of two congruences, wide 22mm

A ' C ' F ' H ' and

O ' P ' Q ' R ' gets about horizontal flexible piece.Mark Mid point B ', the G ' of A ' C ' F ' H ' two ends broadside C ' A ' and F ' H ', connect B ', G ', get its cross central line B ' G ', to the right along center line B ' G ' in turn delimit 5 equidistant screw points from some D ' perforate of distance point B ' 20mm by the pitch-row of 10mm at the left end point B ' that crosses this center line, because of the left side A ' C ' F ' H ' and the right

5 screwhole position symmetries on O ' P ' Q ' R ', pitch-row are identical, so in the same way on the right

Mark 5 equidistant screw points on O ' P ' Q ' R '.Mark

The mid point M ' of A ' C ' F ' H ' left end broadside C ' B ' and the mid point K ' of B ' A ', cross vertical line section M ' N ', K ' I ' that mid point M ' K ' draws two long 5.5mm respectively to the right, being the center of circle with a N ' again, is that radius is made arc with M ' N ' length, hands over C ' F ' in U ', hand over A ' C ' in M ', with an I ' is the center of circle, is that radius is made arc with K ' I ' length, hands over A ' C ' in K ', hand over A ' H ' in V ', because of

The left end of A ' C ' F ' H ' and

The right-hand member symmetry of O ' P ' Q ' R ' is so exist by identical method and radius The last inferior horn of the right-hand member broadside of O ' P ' Q ' R ' is drawn two arcs, in order to fillet (contrast Fig. 1).

2, mark the schematic diagram that the perpendicular support of retainer contains the supporting base base plate: standardized is the horizontal line GW of the long 102mm of end points with GW earlier, mark the mid point A of this line segment GW, cross some A vertical line section AP of standardized long 86mm downwards, vertical line section PO after the standardized left long 25mm of the lower extreme point P of this vertical line section, cross the vertical line section PQ of the standardized long 25mm of some P to the right, point of contact Q, W, and point of contact G, O, get isosceles trapezoid QWGO, the mid point A that crosses this trapezoidal GW of going to the bottom intercepts the line segment IA of two long 10mm to the left and right along going to the bottom, AU, again from the left and right sides two-end-point I of these two line segments, U upwards draws vertical line section A ' I of two long 144mm respectively, C ' U, the upper extreme point A ' that links two vertical line sections again, C ' must erect and prop up

A ' IUG ' intersects vertically and fuses with the trapezoidal GW of going to the bottom and must erect support and contains trapezoidal supporting base base plate.The left and right sides two-end-point G, the W that cross the trapezoidal GW of going to the bottom upwards draw vertical line section GE, the WY of two long 17mm respectively, again from vertical line section EB ⊥ A ' I of the standardized to the right long 41mm of upper extreme point E of vertical line section GE, from vertical line section YF ' ⊥ C ' U of the standardized left long 41mm of upper extreme point U of vertical line section WY, the right and left in perpendicular section lower end of perpendicular support gets the supporting base reinforcement block that two areas equate respectively EGIB,

F ' UWY.Mark The mid point B ' of A ' IUC ' upper end broadside A ' C ', the mid point B ', the A that link its upper and lower side broadside get its vertical center line B ' A, in turn delimit 6 equidistant screw points by the pitch-row of 20mm to lower edge center line B ' A from the some D ' perforate apart from the upper extreme point B ' 15mm of this center line.

Get mid point F on the FGIB left end broadside EG,

Get mid point X on the F ' UWY right-hand member broadside YW, link mid point F, X that the right and left is got, two rectangular cross central line FX about getting, to the right along center line FX delimit 2 screw point D, Cs at a distance of the some D of 10mm by the pitch-row of 20mm from left end point F, delimit 2 screw point Z, H ' along center line FX at a distance of the some Z of 10mm left by the pitch-row of 20mm from right endpoint X with this center line with this center line.On going to the bottom GW, gets trapezoidal QWGO some H apart from left end point G20mm, on going to the bottom GW, this gets some V apart from right endpoint W20mm, cross vertical line section HK, VT that some H, V draw two long 20mm downwards respectively, the line segment of a standardized longer 60mm links lower extreme point K, the T of these two vertical line sections, then line segment KT is vertically divided equally by line segment AP, intersection point is L, and get a K, L, T is 3 screw points; On going to the bottom the perpendicular bisector AP of GW, gets this trapezoidal QWGO some I ' apart from lower extreme point P13mm, cross vertical line section NI ', I ' R that some I ' draw two long 17mm to the left and right, be perpendicular bisector AP perpendicular bisector section NR, two-end-point K, the T of the KT of line taking section again, two-end-point N, the R of line taking section NR link K, N, and binding T, R, get interior isosceles trapezoid RTKN, and get two-end-point R, N and this trapezoidal two waist KN of this trapezoidal upper base RN, mid point M, the S of TR delimit 4 screw points (contrast Fig. 2).

3, the retainer lateral frame that will delimit is got drill center (desire claims foreign dotting punch) with centre punch earlier one by one with all screw central points that about horizontal flexible piece and perpendicular support contain on the supporting seat board, piece-holder on bench vice, is got out 10 screws on 8 screws at horizontal two ends of lateral frame, about horizontal the flexible piece and 11 screws on the perpendicular bracket supports seat board one by one with the drill bit drill center of Φ 4mm; The drill bit of using Φ 5mm again instead gets out 6 screws that disjunctor sagging in the middle of the lateral frame is perpendicular to be propped up and 6 screws that perpendicular support is perpendicular to be propped up one by one.

With piece-holder on bench vice, by hand hacksaw along the outer edge line of horizontal, vertical support planar graph with horizontal, vertical support contain the supporting seat board respectively sawing get off, with about horizontal flexible piece along the outer edge line of its figure respectively sawing get off, to erect support again is clamped on the vice, in the left and right sides of perpendicular section (A ' IUC ') lower end of perpendicular support from a B sawing to an I, from F ' sawing to a U (contrast Fig. 2).

4, will erect the trapezoidal supporting seat board of support QWGO vertical folder is held in and makes down bottom line GW and vice jaw coincide with on the same straight line on the vice and make perpendicular A ' IUC ' vertically upward, with hammer with left supporting base as the integral body of solid piece cuboid EGIB along its below long limit GI bending and beat downwards forward with trapezoidal base plate QWGO form 86 ° 30 ' angle, with the integral body of right supporting base reinforcement block cuboid F ' UWY along its below long limit UW bending and beat downwards forward with trapezoidal base plate QWGO form 86 ° 30 ' angle, i.e. ∠ OGC=∠ QWR=86 ° 30 '; The integral body that to erect perpendicular section cuboid A ' IUC ' of support again bends along its lower end broadside IU, promptly beat a H forward downwards and be all 5.5mm apart from a F ' apart from a B, some N from its root, and some H becomes line segment HB ⊥ EB to the distance of some B, point N becomes line segment NF ' ⊥ F ' Y to the distance of some F ', make Δ HIB ≌ Δ NUF ', make ∠ HIB=∠ NUF '=24 °, must erect support back rake angle (contrast Fig. 3).

Marking two right-angle side minor faces respectively on the thick sheet metal of 2.5mm is 8mm, length of side limit, right angle be 16mm, hypotenuse be Rt Δ T ' Q ' K ' ≌ Rt Δ Z ' U ' V ' of 17.5mm as two perpendicular support back rake angle fixed blocks, the Rt Δ L ' M ' N ' ≌ Rt Δ S ' R ' P ' that marks two right-angle side minor faces more respectively and be 8mm, length of side limit, right angle and be 17mm, hypotenuse and be 18.5mm is as two back rake angle reinforcement blocks; Then above-mentioned 4 triangles are got off with the hacksaw sawing respectively and with emery cloth sanding surface, respectively two back rake angle fixed blocks being sticked on perpendicular support with 502 seccotine sticks again erects on two angle limits of the left and right sides back rake angle that props up the lower end, and the rib AI of length of side limit, the right angle Q ' K ' that makes fixed block Δ T ' Q ' K ' and cuboid EGIB right-hand member coincides, hypotenuse T ' K ' of Δ T ' Q ' K ' is coincided with the perpendicular rib HI that props up lower end, cuboid A ' IUC ' left side, length of side limit, the right angle U ' V ' that makes fixed block Δ Z ' U ' V ' and the rib SU of cuboid F ' UWY left end coincide, and the hypotenuse Z ' V ' of Δ Z ' U ' V ' and the rib NU of a perpendicular lower end, cuboid A ' IUC ' right side are coincided; Again back rake angle reinforcement block Δ L ' M ' N ' is sticked on the surface of left side back rake angle fixed block Δ T ' Q ' K ', and the hypotenuse L ' N ' of Δ L ' M ' N ' and the rib FK of lower end, perpendicular left side are coincided, right-angle side minor face L ' M ' that makes Δ L ' M ' N ' and the right-angle side minor face FB of left side back rake angle Δ HIB coincide; Reinforcement block Δ S ' R ' P ' is sticked on the surface of right side back rake angle fixed block Δ Z ' U ' V ', and hypotenuse S ' P ' of Δ S ' R ' P ' and perpendicular lower end, a right side rib LM are coincided, the right-angle side minor face S ' R ' that makes Δ S ' R ' P ' and the right-angle side minor face LF ' of right side back rake angle Δ NUF ' coincide (contrast Fig. 3).

5, horizontal inversion of lateral frame is clamped on the vice, make perpendicular the propping up vertically upward of disjunctor on horizontal, rib (long limit) CS and the vice jaw of horizontal below are coincided with on the same straight line, is 4mm with the lower extreme point M of the integral body of perpendicular HXZO of the horizontal Zhi Shangfang disjunctor vertical line when its lower end broadside HO bending is promptly forwards beaten horizontal top edge and turned forward to the vertical range of horizontal lower limb S with hammer, be (two ends, the left and right sides) air line distance point A～J '=W～T '=4mm that horizontal top edge turns forward, horizontal top rake ∠ ACJ '=∠ WST '=10 °, the needs of the natural position that body slightly turns forward when overlooking to adapt to pupil reading and writing (contrast Fig. 1).

Then with emery wheel or file by drawing circular arc go respectively earlier horizontal with about 4 angles at flexible piece two ends, more horizontal, vertical support is contained that supporting base base plate, about horizontal flexible piece etc. are removed the boring soft flocks with file and with emery cloth with all dos processing of spraying paint after the sanding one by one of its surface.

6, (ratio of making this figure in an embodiment is 1: 1 to the schematic diagram of the first horizontal Zhi Liufang bag of the lateral frame sponge piece that draws on the blank sheet of paper of specification 80 grams, ratio in the accompanying drawings is 1: 2): drawing one earlier is the horizontal line of the long 250mm of end points with A, O, draw vertical line section AA ', the OV ' of two long 22mm more respectively downwards from two-end-point A, the O of this line segment, the lower extreme point A ', the V ' that link two vertical line sections again,

AOV ' A '.On long limit AO above this rectangle, get some D, on the AO of this length limit, get some V,, link upper extreme point F, the T of two vertical line sections more respectively from a D, V make progress vertical line section DF, the VT of two long 30mm of picture apart from right endpoint O 60mm apart from left end point A60mm, must FTVD.

Get some D ' on the long limit A ' V ' in AOV ' A ' below apart from left end point A ' 60mm, on the A ' V ' of this length limit, get some H ' apart from right endpoint V ' 60mm, draw vertical line section D ' E ', the H ' F ' of two long 30mm respectively from a D ', H ' downwards, link the lower extreme point E ' F ' of two vertical line sections again,

D ' H ' F ' E '.Draw The mid point K of the long limit FT in FTVD top crosses the vertical line section KI that some K draws a long 22mm downwards, crosses some I and draws the vertical line section IG of a long 17mm left, and prolong IG to some E, crosses some I and draws the vertical line section IS of a long 17mm to the right, and prolong IS to some U.

Get some O ' on D ' H ' F ' E ' left end broadside D ' E ', at this apart from upper extreme point D ' 8mm

Get some P ' on right-hand member broadside H ' F ', point of contact O ', P ' apart from upper extreme point H ' 8mm. Get some B on the long limit AO in AOV ' A ' top, get again, draw the vertical line section BB ', CC ' while of two long 22mm downwards perpendicular to A ' D ' from a B, C respectively apart from the some C of some B 15mm apart from left end point A 20mm; On the AO of this length limit, get some P, get again, draw the vertical line section PT ', WS ' while of two long 22mm downwards perpendicular to H ' V ' from a P, W respectively apart from the some W of some P 15mm apart from right endpoint O 20mm.With the outer edge line of scissors figure is sheared off from drawing then along whole sponge piece planar graph, and from The mid point K of the long limit FT in FTVD top cuts to an I, cuts left to a G from an I again, cuts to the right to a S from an I; Then, this planar graph drawing is lain on the sponge of the bigger thick 30mm naturally of density, with wide thin sharp sharp knife or blade outward flange sponge is cut down along this drawing figure, and according to the "T"-shaped method of cutting of above-mentioned drawing, sponge is cut 22mm downwards from the mid point K of figure top edges line FT grow to an I, cut 17mm left from an I again and grow to a G, cut 17mm to the right from an I and grow to a S; The figure and the size of pressing drawing again will

The plane of FTUE from the same position of the corresponding sponge piece of drawing figure on entirely excise the cuboid sponge piece of a long 130mm, wide 22mm, high 13mm downwards, press on the drawing again

The plane of O ' P ' F ' E ' from the same position of the corresponding sponge piece in this plane on entirely excise the cuboid sponge piece of a long 130mm, wide 22mm, high 13mm downwards; On drawing

The plane of ABB ' A ', from with the same position of the corresponding sponge piece in this plane on entirely excise the cuboid sponge piece of a long 22mm, wide 20mm, high 13mm downwards, and on the sponge piece position of symmetry therewith the downward cuboid sponge piece of long 22mm of excision, wide 20mm, high 13mm, by above-mentioned attenuate, help the sponge piece is entirely fitted with horizontal and making sponge piece and the sponge piece can smooth identical (contrast Fig. 4) cleverly behind convolution at the horizontal Zhi Shineng of bag fruit lateral frame to sponge piece privileged site.

7, adopt the chocolate artificial leather leather of a block length 300mm, wide 125mm, thick 0.7mm, and the schematic diagram of the horizontal Zhi Liufang bag of the lateral frame sponge foreskin cover that draws at the back side of this piece leather earlier: drawing one earlier is the horizontal line of the long 230mm of end points with C, N, draw vertical line section CE ', the NI ' of two long 70mm more respectively downwards from two-end-point C, the N of this line segment, and link lower extreme point E ', the I ' of two vertical line sections,

CNI ' E ' upwards prolongs 20mm to a D, L with above-mentioned two vertical line section CE ', NI ' from intersection point point C, N respectively again, and links D, L, DLNC.At this

Get some F on the long limit DL in top, on the DL of this length limit, get some Q,, link upper extreme point G, the P of two vertical line sections more respectively from a F, Q make progress vertical line section FG, the QP of two long 25mm of picture apart from right endpoint L 25mm apart from left end point D 25mm, must

GPQF.Draw this

The mid point R of the long limit GP in top crosses the line PK that intersects vertically that some R draws a long 29mm downwards, and the vertical line section KH after the lower extreme point K of this vertical line draws a long 17mm left crosses the vertical line section KO that some K draws a long 17mm to the right;

Get some B ' on CNI ' E ' left end broadside CE ', get apart from the some D ' that puts B ' 20mm, at this to this broadside of lower edge after a B ' apart from upper extreme point C 25mm

Get the some T ' apart from upper extreme point N 25mm on the right-hand member broadside NI ', get apart from the some R ' of some T ' 20mm to this broadside of lower edge after a T ', point of contact B ', T ', and point of contact D ', R ' again get respectively

CNT ' B ', B ' T ' R ' D ', D ' R ' I ' E '. Get left end point F and right endpoint Q on the long limit FQ in GPQF below, cross intersect vertically line FG ', QH ' that some F, Q draw two long 90mm downwards respectively, then on the left side gets respectively DFEC, B ' C ' F ' D ', CEC ' B ', D ' F ' G ' E '; Get respectively on the right

QLNM, S ' T ' R ' K ', MNT ' S ', K ' R ' I ' H '; Must in the centre FQME,

EMS ' C ',

C ' S ' K ' F ',

F ' K ' H ' G ', and symmetrical rectangle and the foursquare girth in two ends, the left and right sides all equates on same straight line.Then, from mistake

The mid point B of CNT ' B ' left end broadside CB ' draws the vertical line section BY of a long 30mm left, cross the make progress vertical line section YA of a long 4mm of picture of this vertical line section left end point Y, prolong YA 4mm downwards to some A ', point of contact A, a C again after a Y, and point of contact A ', B ', get isosceles trapezoid A ' B ' CA; After this The mid point U of right-hand member broadside NT ' draws the vertical line section UX of a long 30mm to the right, cross the make progress vertical line section VX of a long 4mm of picture of this vertical line section right endpoint X, cross some X and prolong VX4mm downwards to a Z, point of contact V, N, and point of contact Z, T ', isosceles trapezoid VNT ' Z, trapezoidal position symmetry, the area of this trapezoidal and left end equates (contrast Fig. 5).

The outward flange of above-mentioned foreskin cover planar graph along this figure sheared off with scissors, again from figure

The mid point R of the long limit GP in GPQF top begins to cut to a K, cuts left to a H from a K again, cuts to the right to an O from a K; Then from The upper extreme point C of CNT ' B ' left end broadside CB ' cuts to an E along long limit CN to the right, cuts to a C ' along long limit B ' T ' to the right from the lower extreme point B ' of this broadside; From

The upper extreme point D ' of D ' R ' I ' E ' left end broadside D ' E ' cuts to a F ', from this along long limit D ' R ' to the right

The upper extreme point R ' of right-hand member broadside R ' I ' cuts to a K ' along long limit D ' R ' left, again from The upper extreme point N of CNT ' B ' right-hand member broadside NT ' cuts to a M along long limit CN left, cuts to a S ' (contrast Fig. 5) along long limit B ' T ' left from the lower extreme point T ' of this broadside.

8, aforesaid a kind of dismoutability nylon " male and female adhesive tape " (claiming bonding the button again, hereinafter to be referred as adhesive tape) that replaces button and march that is widely used at present is pasted and fixed on the front and the back of the body (instead) face of foreskin cover with quick multi-use mucilage with it as follows.

In the planar graph at the foreskin cover back side, will

Long limit, GPQF below FQ this edge is drawn on the same position in leather sheath front, again according to Isosceles trapezoid A ' B ' the CA of (the long 8mm of upper base, the long 25mm that goes to the bottom, the high 30mm in two ends) on the broadside of two ends, CNT ' B ' left and right sides, the same size of isosceles trapezoid VNT ' Z exist respectively

Two ends, F ' K ' H ' G ' left and right sides broadside F ' G ', K ' H ' goes up (on the same position in leather sheath front) and promptly draws upper base to the right with broadside F ' G ' for going to the bottom, go to the bottom left left end isosceles trapezoid L ' F ' G ' O ' and draw upper base left with broadside K ' H ' for going to the bottom, to the right right-hand member isosceles trapezoid Y ' H ' K ' X ' goes to the bottom, cut two trapezoidal adhesive tape master tapes that equate with above-mentioned isosceles trapezoid area with scissors again, and four faces that respectively will be bonding apply glue equably, two trapezoidal adhesive tapes are sticked on respectively on the trapezoidal position at two ends, the left and right sides, below, leather sheath front, and the four edges of two trapezoidal adhesive tapes is coincided with the trapezoidal four edges of paste respectively; Cut the rectangle adhesive tape master tape of equal long 90mm, wide 25mm of two areas again, and will laterally stick on the left side about the square adhesive tape of this two block length (broadside reclines mutually with broadside) side by side simultaneously respectively with glue

GRSF and the right On RPQS (the leather sheath positive corresponding same) position, above-mentioned two rectangular belows long limit FS, SQ are coupled together and (the leather sheath back side)

The long limit FQ in GPQF below overlaps (contrast Fig. 5, Fig. 6) fully.In the planar graph at the foreskin cover back side, press The same size of isosceles trapezoid is cut the public band of isosceles trapezoid adhesive tape that two areas equate on the broadside of two ends, CNT ' B ' left and right sides, respectively these two trapezoidal adhesive tape joinings is existed On the position of trapezoidal A ' B ' CA of CNT ' B ' left end and the trapezoidal VNT ' Z of right-hand member and the four edges of two adhesive tapes is coincided with the trapezoidal four edges of paste respectively; And then cut one with leather sheath on

The rectangle adhesive tape of long 180mm, wide 25mm that F ' K ' H ' G ' area equates is public to be with, with this piece adhesive tape joining under leather sheath

On the position of F ' K ' H ' G ', the four edges that makes this piece adhesive tape with The four edges of F ' K ' H ' G ' coincide (contrast Fig. 5).

9, horizontal the flexible piece in the lateral frame left side placed the back side on horizontal of the left side, two circular arcs behind flexible piece left end and the horizontal chamfer of supporting the leftist side are overlapped fully, making a flexible piece left side play the first screw D ' coincides with the horizontal second screw E that supported the leftist side, flexible piece the 3rd screw E ' is coincided with horizontal the 4th screw F, the screw that this two place has been overlapped is put on the bolt of 2 Φ 4mm * 8 respectively and is screwed nut and fixed (installation site of horizontal the flexible piece in the right and screw contraposition and left side symmetry) again, according to the method described above horizontal the flexible piece in the right is installed and fixed horizontal on the right the back side (contrast Fig. 1).

10, above-mentioned horizontal Zhi Haimian piece and foreskin cover are fixed on horizontal of lateral frame, method is as follows: the back side that will the horizontal Zhi Haimian foreskin cover of ready-made six sides bag faces down upwards keeps flat on the table, and makes foreskin overlap the back side GPQF to directly over put, will be ready-made the horizontal Zhi Haimian piece of six sides bag lie in position, middle above the foreskin cover, and make directly over the joint-cutting KI and leather sheath of rib FT mid point above the cuboid FTUE of sponge piece top

Long limit, GPQF top GP mid point cut seam RK alignment, and the long limit of upper and lower (outward flange) that makes the sponge piece respectively with the long limit of upper and lower (outward flange) of leather sheath at a distance of 17mm.The retainer lateral frame is inverted, perpendicular of the disjunctor that makes the lateral frame middle upwards, horizontal downwards, horizontal cuboid AWSC integral body is lain on the position of sponge piece middle rectangle CWS ' C ' (contrast Fig. 1, Fig. 4).On the left side, divide the convolution of opening and make progress with the integral body of sponge piece upper left side cuboid FKIE from its right-hand member otch seam K1 to IG earlier, make it walk around the perpendicular Zhi Houzai of horizontal the disjunctor directly over the middle inwardly to press to be close to horizontal the back side and carry out horizontal wide on lid 1/2 and pin with hand, divide the convolution of opening and make progress with the integral body of sponge piece upper right side cuboid KTUI from its left end otch seam KI to IG again, make it the perpendicular Zhi Houzai of the disjunctor of walking around horizontal inwardly to press to be close to horizontal the back side and carry out horizontal wide on lid 1/2 and pin with hand, again will under sponge piece cuboid D ' H ' F ' E ' integral body with line segment D ' H ' be broken line upwards bending again with line segment O ' P ' be broken line inwardly downwards convolution to be close to horizontal the back side carry out horizontal wide on lid 1/2 and fit with the sponge block edge of top and pin with hand; With sponge piece left end cuboid ABB ' A ' with line segment CC ' be broken line make progress convolution again with line segment BB ' be broken line to the right downwards convolution to being close to the horizontal Zhi Zuoduan back side and pinning with hand, rib (broadside) AA ' that makes this sponge piece and line segment DD ' coincide and also close up the formed rib in back (broadside) with upper and lower sponge piece convolution and fit, again with sponge piece right-hand member cuboid POV ' T ' with line segment WS ' be broken line make progress convolution again with line segment PT ' be broken line downwards convolution is to being close to horizontal the right-hand member back side and pinning with hand left, rib (broadside) OV ' that makes this sponge piece and line segment VH ' coincide and also close up afterwards with upper and lower sponge piece convolution that formed rib (broadside) fits; Then, with the upper left side of leather sheath below the sponge piece The integral body of GRSF is divided the convolution of opening and make progress from its right-hand member clip seam RK to KH, make it at the perpendicular Zhi Houzai of the disjunctor of walking around horizontal inwardly to press to the sponge piece of being close to the front and amount to the sponge piece that holds together with the horizontal half of upper and lower volume of supporting the leftist side and carry out lid and pin comprehensively, again with the upper right side of leather sheath with hand

The integral body of RPQS is divided from its left end clip seam RK to KO and is opened and convolution upwards, make it at the perpendicular Zhi Houzai of the disjunctor of walking around horizontal inwardly to press to the sponge piece of being close to the front and amount to the sponge piece that holds together with horizontal the half of upper and lower volume in the right side and carry out lid and pin comprehensively with hand; Then with the leather sheath under below the sponge piece The integral body of B ' T ' I ' E ' is the broken line convolution that makes progress with the long limit B ' T ' in its top, again with leather sheath The integral body of D ' K ' I ' E ' is the inwardly downward northwards convolution of broken line with the long limit D ' R ' in its top, makes leather sheath

The integral body of F ' K ' H ' G ' is pressed to and is carried out and covers front the right and left leather sheath

GRSF and

The integral body of RPQS makes

The four edges of F ' K ' H ' G ' with The four edges of GPQF coincides, and makes leather sheath

Public band of adhesive tape and leather sheath that F ' K ' H ' G ' is top

GRSF and Adhesive tape master tape above the RPQS mesh comprehensively and with hand a little pressure its whole field of conjugate action is pushed one time, can loose one's grip; Then horizontal Zhi Zuoduan top leather sheath D ' F ' G ' E ' is bent to downwards along its length of side F ' G ' and is close to slightly curved horizontal Zhi Zuoduan sponge surface, with the upper left side leather sheath

DFEC is bent to the surface of being close to front leather sheath D ' F ' G ' E ' downwards along its broadside FE, with the lower left leather sheath B ' C ' F ' D ' upwards is bent to along its broadside C ' F ' and is close to the front leather sheath The surface of DFEC upwards is bent to the leather sheath CEC ' B ' of middle, the left side and is close to the front leather sheath The surface of B ' C ' F ' D ' and simultaneously that this leather sheath CEC ' B ' is top isosceles trapezoid A ' B ' CA are bent to downwards to the right along its CB ' that goes to the bottom and are close to leather sheath The surface of isosceles trapezoid L ' F ' G ' O ' on F ' K ' H ' G ' (leather sheath front) left end broadside F ' G ', the four edges of trapezoidal A ' B ' CA and the four edges of trapezoidal L ' F ' G ' O ' are coincided, the top adhesive tape master tape of the public band of adhesive tape and trapezoidal L ' F ' G ' O ' above trapezoidal A ' B ' CA is meshed comprehensively, and with hand a little pressure the whole field of conjugate action is pushed one time; Then horizontal right-hand member top leather sheath K ' R ' I ' H ' is bent to downwards along its length of side K ' H ' and is close to horizontal slightly curved right-hand member sponge surface, with the upper right side leather sheath QLNM is bent to the surface of being close to front leather sheath K ' R ' I ' H ' downwards along its broadside QM, with the lower right leather sheath S ' T ' R ' K ' upwards is bent to along its broadside S ' K ' and is close to the front leather sheath

The surface of QLNM upwards is bent to the leather sheath MNT ' S ' of middle, the right along its length of side MS ' and is close to the front leather sheath

The surface of S ' T ' R ' K ' and simultaneously that this leather sheath MNT ' S ' is top isosceles trapezoid VNT ' Z are bent to downwards left along its NT ' that goes to the bottom and are close to leather sheath The surface of isosceles trapezoid Y ' H ' K ' X ' on F ' K ' H ' G ' (leather sheath front) right-hand member broadside K ' H ', the four edges of trapezoidal VNT ' Z and the four edges of trapezoidal Y ' H ' K ' X ' are coincided, the adhesive tape master tape that the adhesive tape public affairs are with and trapezoidal Y ' H ' K ' X ' is top above trapezoidal VNT ' Z is meshed comprehensively, and with hand a little pressure the whole field of conjugate action is pushed one time, make two adhesive surfaces bonding firmly (contrast Fig. 4, Fig. 5, Fig. 6).

11, perpendicular the section (cuboid HXZO) of retainer lateral frame matched with perpendicular section (a cuboid A ' IUC ') of the perpendicular support of band supporting seat board carry out mount, perpendicular (HXZO) upper end first screw (Q) of lateral frame and perpendicular (A ' IUC ') upper end first screw (D ') of perpendicular support are coincided, make perpendicular (HKZO) lower end the 6th screw (L) of lateral frame and perpendicular (A ' IUC ') lower end the 6th screw (E ') of perpendicular support coincide (at this moment horizontal, 6 screws on perpendicular the section of perpendicular support all overlap), above-mentioned two place's screws that then will overlap are put on the bolt of two Φ 5mm * 10 respectively and are screwed nut and fixed (contrast Fig. 1, Fig. 2).

12, the retainer that above-mentioned assembling is finished is fixed on the lifting desk.Method is as follows: the cross recess wood screw for preparing 11 Φ 4mm * 15 earlier, the mid point (O ') of perpendicular (A ' IUC ') lower end broadside (IU) of the perpendicular support of retainer is aimed at the mid point of (long limit, below) rib of the medial surface of same table desktop, make and erect the back side that the trapezoidal supporting base base plate of support (QWGO) all puts in the table and is close to desktop, and make and two supporting base reinforcement block (cuboid EGIB about go to the bottom (GW) of this trapezoidal base plate (QWGO) fuses, cuboid F ' integral body UWY) is close to respectively on the inner side surface of desktop, and use the handle wood drill earlier with each screw eye preboring hole depth 7mm, it is in addition fastening respectively 4 screws on two supporting base reinforcement blocks about above-mentioned to be screwed on 4 wood screws with the cross bottle opener by the order of first intermediate and then both sides again, and 7 wood screws are in addition fastening (to contrast Fig. 2 to ecto-entad from screwing on one by one respectively to a middle row's screw and by upper base one row's screw by (GW) row's that goes to the bottom of the trapezoidal base plate of supporting base (QWGO) screw then, Fig. 3).

13, back rake angle ∠ HIB and ∠ NUF ' with two lower ends about perpendicular section (cuboid A ' IUC ') of the perpendicular support of above-mentioned A-I type retainer, contrast Fig. 3), increase between 27 °～28 ° by former 24 °, here get 27 ° (because of the desktop of lifting desk within it the side be downward-sloping with 3 °～4 ° inclination angle, but not the desktop of the common desk of lifting generally is a horizontal plane), other are constant, produce shape thus with A-I type retainer, performance, principle and the just back rake angle angle different A-II type retainer of perpendicular support all identical with specification, then this A-II type retainer is fixed on the common desk of non-lifting, makes it be adapted to use student's the use needs of the part school of the common desk of non-lifting; Meanwhile, this condition according to " as long as the desktop of this desk is a cuboid ", this A-II type retainer can also be installed on the common writing desk or desk or desk of the non-lifting of this class, make it be adapted to be engaged in for a long time the clerical workforce of the teachers at different levels, R﹠D institution of reading writing working and office and be engaged in the books and newspapers editor for a long time and the personnel of secretarial and writing use.

Claims (4)

1, a kind of correct read-write posture retainer of myopia prevention that mainly is installed on the lifting desk, this retainer comprises " T " font lateral frame and the perpendicular support with trapezoidal supporting base base plate, it is characterized in that: the long 180mm of horizontal section (AWSC) of lateral frame, wide 22mm, perpendicular section (HXZO) long 138mm of lateral frame, wide 20mm, center position about bottom surface, long limit (CS), horizontal section of lateral frame (AWSC) below fuses with the upper end end face of perpendicular section (HXZO) and forms " T " font lateral frame, at the right and left of horizontal section of this lateral frame from distance two ends broadside (AC, WS) mid point (B, U) the 10mm pitch-row of sentencing 10mm is drilled with the equidistant screw of 4 Φ 4mm respectively in turn to the mid point (W ') of this center line along its cross central line (BU), the pitch-row of sentencing 20mm at mid point (K) 20mm apart from perpendicular section (HXZO) the upper end broadside (HO) of this lateral frame is drilled with the equidistant screw of 6 Φ 5mm in turn to its vertical center line (KY) of lower edge, and at perpendicular (H of intersection point place, the left and right sides that intersects vertically of horizontal disjunctor of lateral frame with it, O) respectively symmetric arrays the right-angle side minor face of two congruences is arranged is 7mm, length of side limit, right angle is 13mm, hypotenuse is the right angled triangle (GHI of 15mm, PON), and with its horizontal stroke, perpendicular fuses; The right and left at horizontal the back side of lateral frame respectively makes the equal long 70mm of two areas respectively with two bolts simultaneously, flexible piece (A ' C ' F ' H ' about horizontal of wide 22mm, O ' P ' Q ' R ') is fixed on above horizontal, wherein, the pitch-row of sentencing 10mm from mid point (B ') 20mm of left end broadside (A ' C ') apart from it on the flexible piece of on the left side is drilled with the equidistant screw of 5 Φ 4mm to the right in turn along its cross central line (B ' G '), 5 screwhole position symmetries on the flexible piece in these 5 screws and the right, the diameter of screw is identical with pitch-row, wherein on the flexible piece in the left side along several the 1st screws (D ') and the 3rd screw (E ') and the horizontal Zhi Zuoduan of lateral frame plays the 2nd screw (E) and the 4th screw (F) coincides, and the two ends, the left and right sides of horizontal of lateral frame and about the outer end of two flexible pieces respectively by being the circular arc chamfering that radius is drawn with 5.5mm length, four circular arcs after the chamfering respectively with horizontal two chamfer after four circular arcs overlap fully; But also the while has been installed a block length 250mm, wide 82mm on horizontal section of this lateral frame, the sponge piece of thick 30mm adds a long 290mm who makes of chocolate artificial leather leather, the foreskin cover of wide 115mm, thick 0.7mm naturally, and the foreskin cover is fixed carry out integral body bag fruit through horizontal the section of sponge Bao Guohou; The perpendicular back side of propping up section (HXZO) at lateral frame, two set bolt (Q by its perpendicular section upper and lower side, L) perpendicular section of lateral frame is connected with perpendicular section of the perpendicular support of band supporting base, wherein erecting of perpendicular support propped up section (A ' IUC ') long 144mm, wide 20mm, go up the pitch-row of sentencing 20mm from mid point (B ') 15mm of upper end broadside (A ' C ') apart from it (B ' A) is drilled with the equidistant screw of 6 Φ 5mm in turn to its vertical center line of lower edge in perpendicular the section (A ' IUC ') of this perpendicular support, and at lower end and the long 50mm of upper base of perpendicular the section (A ' IUC ') of this perpendicular support, long 102mm goes to the bottom, the center position that the isosceles trapezoid base plate (QWGO) of the high 86mm in two ends is gone to the bottom about (GW) at this trapezoidal base plate fuses with it, go up the supporting base fixing threaded hole (R that is drilled with 7 Φ 4mm from its two waists to the upper base of going to the bottom respectively at this trapezoidal base plate (QWGO), T, K, N, S, M, L), the long 41mm that the right and left above trapezoidal base plate is gone to the bottom (GW) has two areas to equate respectively, supporting base reinforcement block (the EGIB of wide 17mm, F ' UWY), the right and left respectively simultaneously with go to the bottom (GW) of this trapezoidal base plate form 86 ° 30 ' angle and fuse, and on these two supporting base reinforcement blocks from apart from they two ends, left and right sides broadside (EG, YW) mid point (F, X) the 10mm pitch-row of sentencing 20mm respectively is drilled with the fixing threaded hole of two Φ 4mm respectively along their cross central line (FX) at the right and left, meanwhile make form between the rib (HI) of inboard, lower end, perpendicular section (A ' IUC ') left side of the right-hand member broadside (BI) of left side supporting base reinforcement block (EGIB) and perpendicular support 23 °～24 ° 40 ' angle, and respectively at these two back rake angle (∠ HIB, ∠ NUF ') two angle limit (HI, BI) and (NU, the right-angle side minor face that F ' is respectively pasting two congruences on U) is 8mm, length of side limit, right angle is 16mm, hypotenuse is back rake angle fixed block (T ' Q ' K ' of 17.5mm, Z ' U ' V '), and the right-angle side minor face of pasting two congruences on the surface of these two fixed blocks respectively be 8mm, length of side limit, right angle is 17mm, hypotenuse is back rake angle reinforcement block (L ' M ' N ' of 18.5mm, S ' R ' P ').

2, the correct read-write posture retainer of myopia prevention according to claim 1, it is characterized in that with horizontal (AWSC) of lateral frame along and the crossing boundary line (HO, GP) that intersects vertically of its disjunctor perpendicular (HXZO) pull back inclination angle between 9 °～11 ° forward.

3, the correct read-write posture retainer of myopia prevention according to claim 1, it is characterized in that the back side in horizontal section of lateral frame, the mid point (R) on the foreskin positive long limit, top of cover (GP) locates to cut the vertical clip seam (RK) of a long 29mm downwards with this long 180mm, two rectangle (GRSF about the rectangle of wide 25mm (GPQF) is divided equally into, RPQS) cross section that still remains on the clip seam afterwards continues to connect, in these two rectangles (GRSF), (RPQS) be pasted with the long 90mm that two areas equate on the position respectively, the master tape of the rectangle nylon male and female adhesive tape of wide 25mm, these two adhesive tape master tape (GRSF, RPQS) about laterally side by side simultaneously with the position of the rectangle (F ' K ' H ' G ') of foreskin cover lower rear on a long 180mm being pasted, the public band of the rectangle adhesive tape of wide 25mm meshes comprehensively, two ends, the left and right sides broadside of the positive rectangle (F ' K ' H ' G ') of foreskin cover (F ' G ', K ' H ') on respectively symmetry pasting the long 8mm of upper base that two areas equate, long 25mm goes to the bottom, isosceles trapezoid adhesive tape master tape (L ' F ' G ' O ' of the high 30mm in two ends, Y ' H ' K ' X '), wherein trapezoidal adhesive tape master tape (L ' F's ' G ' O ') on the left side goes to the bottom left, upper base to the right with rectangle (CNT ' B ') the left end broadside (CB ') at the foreskin cover back side on isosceles trapezoid (the public band of being pasted on the position of A ' B ' CA) of trapezoidal adhesive tape meshes comprehensively, and wherein You Bian trapezoidal adhesive tape master tape (Y ' H's ' K ' X ') goes to the bottom to the right, upper base left with rectangle (CNT ' B ') the right-hand member broadside (NT ') at the foreskin cover back side on isosceles trapezoid (the public band of being pasted on the position of VNT ' Z) of trapezoidal adhesive tape meshes comprehensively.

4, the correct read-write posture retainer of myopia prevention according to claim 1 is characterized in that the back rake angle (HIB, NUF ') of perpendicular section (A ' IUC ') lower end, the left and right sides of the perpendicular support of this retainer increases to 27 °～28 ° by former 24 °.

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