CN2134096Y - Health-care children's desk and chair - Google Patents

Abstract

The utility model combines a desk and a chair as a whole, which is mainly composed of a base, a desk bushing, a desk column tube, a drawer bracket, a desk panel, a chair bushing, a chair column tube, a chair panel and a conical lead screw with a handle, wherein, the height of the desk panel and the chair panel and the distance between the desk and the chair can both be conveniently adjusted according to the difference and the change of children's height. The desk panel is also provided with an automatic alarm device of incorrect sitting postures and an automatic illumination compensating device of insufficient illumination intensity, and the utility model can urge children to adjust sitting postures and can compensate illumination in dark ambient light. The utility model create excellent conditions for protecting children's eyesight and health, and the utility model has the advantages of simple structure, convenient adjustment and material saving.

Description

Health-care children's desk and chair

The utility model relate to that school uses with desk knot and chair together, further be meant a kind of child health care reading and writing desk, chair.

Existing table and chair can not adapt to the write needs of reading of children well, and therefore, cause eyesight to descend because abnormal sitting posture is true or light is bad during children's write-read and go to bits, be long-term next ubiquitous problem.In numerous calligraphy teaching materials and health care books, though the posture and the ambient light of the reading of writing have all been done clear and definite requirement, because objective and subjective, children often are again another pair of shoes carrying out.Such as objectively, student's height differences of the same class is very big, yet all is the tables and chairs of same specification size in the classroom; Children's height increases year by year, but family supplies with always so one of tables and chairs that his write-read uses.Under objective condition like this, require the student with the correct sitting posture write-read, be actually out of the question.From subjective, some children's consciousness and self-constraint force are poor, no matter whether the tables and chairs height is suitable, Zong like to carry out write-read with incorrect sitting posture, bad habit is formed, extremely difficult the correction, so that affect one's power of vision and health.In addition, children did one's assignment before the dusk of being everlasting, and light gradually secretly and is not known, and if things go on like this, also caused the decline of eyesight.The patent No. of applicant's patent applied for be 90215901.1 and application number be 90105567.0 " child health care reading and writing desk, chair ", it is more that it adjusts position, governor motion is also comparatively complicated, uses and quite feels inconvenient.

The purpose of this utility model, provide a kind of child health care reading and writing desk, chair that table and chair are combined, and make the height of its desktop and seat and table all can adjust easily according to the different of children's height build and variation with the distance between the chair, when children's abnormal sitting posture, remind the conscious correcting sitting postures of advice children simultaneously, and automatic compensating illumination when ambient light illumination is not enough.

Below in conjunction with drawings and Examples the utility model is described in detail.

Fig. 1 is the embodiment of a kind of concrete structure of the utility model;

Fig. 2 is be connected with the taper screw mandrel of the being with handle amplification assumption diagram at position of table sleeve pipe or chair cover tube side part among Fig. 1;

Fig. 3 is the electric functional-block diagram of abnormal sitting posture autoalarm among Fig. 1;

Fig. 4 is the illumination automatic electric functional-block diagram of compensating illumination device inadequately among Fig. 1;

Fig. 5 is the schematic diagram of a kind of physical circuit of Fig. 3 block diagram;

Fig. 6 is the schematic diagram of a kind of physical circuit of Fig. 4 block diagram.

Referring to Fig. 1, solution of the present utility model is such, it has a base (1), base (1) top has table sleeve pipe (2) and the chair cover pipe (3) that fuses with it, table sleeve pipe (2) front side that turns forward and sweptback chair cover pipe (3) rear side are equipped with the taper screw mandrel (4) of band handle and the taper screw mandrel (5) of band handle respectively, table sleeve pipe (2) top has the table column jecket (6) that phase sliding sleeve with it closes, table column jecket (6) front side has a tooth-arranging strip (8) that can be meshed with taper screw mandrel (4), has the chair column jecket (7) that phase sliding sleeve with it closes in chair cover pipe (3) top, chair column jecket (7) rear side has a tooth-arranging strip (9) that can be meshed with taper screw mandrel (5), has the seat plate (12) that is connected mutually with it in chair column jecket (7) top, has the drawer bucket (10) that is connected mutually with it in table column jecket (6) top, drawer bucket (10) is stamped desktop (11), is equipped with the automatic inadequately compensating illumination device (14) of abnormal sitting posture autoalarm (13) and illumination on desktop (11).

Referring to Fig. 3, the circuit part of abnormal sitting posture autoalarm (13) has sensing input circuit (15), it becomes the signal of telecommunication of variation to give amplifying circuit (16) amplification the variation sensing of children's sitting posture, remove the Kai Heguan of gauge tap circuit (17) then, delay circuit (18) starts under the output signal effect of opening (or closing) of on-off circuit (17), and when finishing, time-delay use signal enabling language integrated circuit (19) to work again, make it promote sounding component (20) sounding alarm repeatedly, remind children, till sitting posture corrects.Dc source (21) is the working power as whole device (13).

Referring to Fig. 4, the illumination circuit part of automatic compensating illumination device (14) inadequately has illumination sensing input circuit (22), it is responded to into the signal of telecommunication with the illumination of desktop top ambient light and gives delay switch circuit (23) and open and close to control it, send the bright of signal controlling desk lamp (24) by delay switch circuit (23) again or go out, dc source (25) is then as the working power of whole device (14).

The utility model with said structure is when concrete the use, the taper screw mandrel (4) of difference rotating band handle and two handles of (5), can make the upper and lower relative motion and change its height respectively and between table sleeve pipe (2) and the chair cover pipe (3) of a column jecket (6) and chair column jecket (7), thereby realize that the height of desktop (11) and seat plate (12) and table can adjust according to the different of children's height build and variation easily with the distance between the chair.Owing on the desktop (11) children's abnormal sitting posture autoalarm (13) is housed, so when surpassing setting value in the position that children depart from sensor in the sensing input circuit (15) because of sitting posture changes, just can be at a time-delay scheduled time (such as ten seconds) back control sounding component (20) sounding alarm.If children's sitting posture recovers normal again at delay circuit (18) in predetermined time delay, then sounding component (20) is not reported to the police.Because the automatic inadequately compensating illumination device (14) of illumination also is housed on the desktop (11), so when the illumination of ambient light is reduced to setting value, illumination sensing input circuit (22) output signal control delay switch circuit (23) is connected, thereby control desk lamp (24) is shinny, to carry out illumination compensation.

Referring to Fig. 3 and Fig. 5, sensing input circuit (15) is by time-base integrated circuit IC ₁, integrated stable voltage circuit IC ₂, infrared transmitting tube D ₁, infrared receiving tube D ₂, triode BG ₁With BG ₂Resistance R ₁To R ₆And capacitor C ₁To C ₆Form.Amplifying circuit (16) is by triode BG ₃With BG ₄, potentiometer W ₁, resistance R ₇To R ₁₂And capacitor C ₇To C ₉Form.On-off circuit (17) is by time-base integrated circuit IC ₃, diode D ₃, resistance R ₁₃And capacitor C ₁₀With C ₁₁Form.Delay circuit (18) is by time-base integrated circuit IC ₄, triode BG ₅With BG ₆, light emitting diode D ₄, resistance R ₁₄To R ₁₉And capacitor C ₁₂With C ₁₃Form.Language integrated circuit (19) is by the language ic chip ₅, triode BG ₇, potentiometer W ₂And capacitor C ₁4 and C ₁₅Form.Sounding component (20) is loudspeaker YD.Dc source (21) is by battery V ₁With K switch ₁Form.With infrared transmitting tube D ₁With infrared receiving tube D ₂Be contained in position suitable on the desktop, for the children that write with the right hand, D ₁And D ₂Should be contained in the right front angle of desktop, make D ₁The infrared light of emission passes D above the shoulder left before children's nose when children's sitting posture is correct ₂Do not receive D ₁The infrared light of emission.When children's abnormal sitting posture that the right hand writes, head turn forward or a left side askew, with D ₁The infrared light reflection of emission goes back, and makes D ₂Reception also is converted into electric signal, through BG ₂To BG ₄Amplify drive IC ₃, through IC ₄The time-delay back starts IC ₅, promote loudspeaker YD warning sounding.For the children of the word that writes left handed, D ₁With D ₂Then should be contained in the desktop left-front corner, its operation principle is same as described above.IC ₅Can record the language board that can send " child please sit straight " and so on sound.

Referring to Fig. 4 and Fig. 6, illumination sensing input circuit (22) is by photo resistance R ₂₀, potentiometer W ₃, resistance R ₂₁And capacitor C ₁₈Form.Delay switch circuit (23) is by voltage comparator ic ₇, triode BG ₈With BG ₉, light emitting diode D ₉, relay Z ₁, resistance R ₂₂To R ₂₈And capacitor C ₁₉With C ₂₀Form.The bulb of desk lamp (24) is DK.Dc source (25) is by transformer B, K switch ₂, diode D ₅To D ₈, integrated voltage stabilizer IC ₆And capacitor C ₁₆With C ₁₇Form.With photo resistance R ₂₀On the table appropriate location is installed to experience ambient light, when illumination reduces, R ₂₀Resistance increase, when illumination is lower than definite value, IC ₇The output high level is to capacitor C ₂₀Charging makes relay Z behind certain hour ₁Connect normally opened contact Z _1-1Closure makes desk lamp bulb DX luminous lighting.

The dc source (25) of dc source among Fig. 3 (21) in can shared Fig. 4.As V ₁Can adopt the bigger rechargeable battery of capacity, but whole device AC/DC.Because of these tables and chairs are children special-purpose, except that can be desktop fixed configurations desk lamp, fixing preparation writing case also, bookshelf, penknife, calculator, magnetic mimeograph and time set etc.Because of these tables and chairs are that the special messenger uses,, some has been suffered from the children of disease again, in its write-read, treated, to expand its purposes so also can on tables and chairs, set up the physiotherapy device.

The utility model fuses table and chair dexterously; and can carry out convenient, flexible adjustment according to children's actual conditions; when children's abnormal sitting posture, can remind the conscious correcting sitting postures of advice children; automatically carry out illumination compensation when ambient light illumination is not enough, this just very helps protecting children's eyesight and health.This apparatus structure is simple, and is easy to adjust, and materials are saved.

Claims (3)

1, a kind of child health care reading and writing desk, chair is characterized in that:

A) has a base (1), base (1) top has table sleeve pipe (2) and the chair cover pipe (3) that fuses with it, table sleeve pipe (2) front side that turns forward and sweptback chair cover pipe (3) rear side are equipped with the taper screw mandrel (4) of band handle and the taper screw mandrel (5) of band handle respectively, table sleeve pipe (2) top has the table column jecket (6) that phase sliding sleeve with it closes, table column jecket (6) front side has a tooth-arranging strip (8) that can be meshed with taper screw mandrel (4), has the chair column jecket (7) that phase sliding sleeve with it closes in chair cover pipe (3) top, chair column jecket (7) rear side has a tooth-arranging strip (9) that can be meshed with taper screw mandrel (5), has the seat plate (12) that is connected mutually with it in chair column jecket (7) top, has the drawer bucket (10) that is connected mutually with it in table column jecket (6) top, drawer bucket (10) is stamped desktop (11), is equipped with the automatic inadequately compensating illumination device (14) of abnormal sitting posture autoalarm (13) and illumination on desktop (11);

B) circuit part of abnormal sitting posture autoalarm (13) has sensing input circuit (15), it becomes the signal of telecommunication of variation to give amplifying circuit (16) amplification the variation sensing of children's sitting posture, remove the Kai Heguan of gauge tap circuit (17) then, delay circuit (18) starts under the output signal effect of opening (or closing) of on-off circuit (17), and when finishing, time-delay use signal enabling language integrated circuit (19) to work again, making it promote sounding component (20) reports to the police repeatedly, remind children, till sitting posture corrected, dc source (21) was the working power as whole device (13);

C) illumination inadequately automatically the circuit part of compensating illumination device (14) have illumination sensing input circuit (22), it is responded to into the signal of telecommunication with the illumination of desktop top ambient light and gives delay switch circuit (23) and open and close to control it, send the bright of signal controlling desk lamp (24) by delay switch circuit (23) again or go out, dc source (25) is then as the working power of whole device (14).

2, child health care reading and writing desk, chair as claimed in claim 1 is characterized in that, sensing input circuit (15) is by time-base integrated circuit IC ₁, integrated stable voltage circuit IC ₂, infrared transmitting tube D ₁, infrared receiving tube D ₂, triode BG ₁With BG ₂, resistance R ₁To R ₆And capacitor C ₁To C ₆Form, amplifying circuit (16) is by triode BG ₃With BG ₄, potentiometer W ₁, resistance R ₇To R ₁₂And capacitor C ₇To C ₉Form, on-off circuit (17) is by time-base integrated circuit IC ₃, diode D ₃, resistance R ₁3 and capacitor C ₁₀With C ₁₁Form, delay circuit (18) is by time-base integrated circuit IC ₄, triode BG ₅With BG ₆, light emitting diode D ₄, resistance R ₁₄To R ₁₉And capacitor C ₁₂With C ₁₃Form, language integrated circuit (19) is by the language ic chip ₅, triode BG ₇, potentiometer W ₂And capacitor C ₁₄With C ₁₅Form, sounding component (20) is loudspeaker YD, and dc source (21) is by battery V ₁With K switch ₁Form.

As claim 1,2 described child health care reading and writing desk, chairs, it is characterized in that 3, illumination sensing input circuit (22) is by photo resistance R ₂₀, potentiometer W ₃, resistance R ₂₁And capacitor C ₁₈Form, delay switch circuit (23) is by voltage comparator ic ₇, triode BG ₈With BG ₉, light emitting diode D ₉, relay Z ₁, resistance R ₂₂To R ₂₈And capacitor C ₁₉With C ₂₀Form, dc source (25) is by transformer B, K switch ₂, diode D ₅To D ₈, integrated voltage stabilizer IC ₆And capacitor C ₁₆With C ₁₇Form.

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