CN204169328U - The anti-drowsy desk and chair that corrects faulty sitting posture - Google Patents
The anti-drowsy desk and chair that corrects faulty sitting posture Download PDFInfo
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- CN204169328U CN204169328U CN201420527425.3U CN201420527425U CN204169328U CN 204169328 U CN204169328 U CN 204169328U CN 201420527425 U CN201420527425 U CN 201420527425U CN 204169328 U CN204169328 U CN 204169328U
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Abstract
The utility model relates to a kind of anti-drowsy desk and chair that corrects faulty sitting posture, comprise corresponding desk and seat, described seat comprises base, frame, buttocks chair top, leg chair top, the chair back, bracing frame and cylinder, described frame is vertically fixed on base, the described chair back is fixed on frame top, described buttocks chair top both sides are fixed with the first support column respectively, described leg chair top both sides are fixed with the second support column respectively, two first support column one end are flexibly connected with central rack respectively by hinge A, the two first support column other ends are flexibly connected with second support column one end respectively by hinge B, first support column, bracing frame is provided with between second support column and frame, shown cylinder is connected with bracing frame.This anti-drowsy desk and chair that corrects faulty sitting posture can play and correct faulty sitting posture, pre-myopic-preventing effect, applies to can to play among classroom anti-drowsy in advance, enlivens classroom atmosphere, the object of improving the quality of teaching.
Description
Technical field
The utility model relates to teaching equipment field, especially a kind of anti-drowsy desk and chair that corrects faulty sitting posture.
Background technology
In teaching process, how improving the quality of instruction in classroom, is a problem anxious to be resolved, and to prevent student from dozing off on classroom be the key of dealing with problems.Past conventional method is that teacher carries out prompting in classroom to the classmate dozed off and solves, but this method exists a lot of drawback.First, teacher also will take sb's mind off sth and prevent classmate sleepy in the process of teaching, and this directly can reduce the quality of instruction in classroom.Secondly, for the classmate be alerted, this can dampen the self-esteem of classmate on the one hand, also can strengthen the resentment of classmate to classroom on the other hand, run counter to desire.
In addition, the latest survey of the Ministry of Education of the state, the Ministry of Public Health shows: end in February, 2014, there is A nearsighted person more than 400,000,000 in China, and wherein teenager becomes " severely afflicated area ".In pupil, rate of myopia is more than 30%, and middle school student reach 70%, and university student reaches 90%.
So design a structure simple, convenient and easy, can prevent drowsiness, the classroom tables and chairs that can correct faulty sitting posture again are necessary.
Korea S's development ipole medical health care chair, adopts aviation fabric, at present in state-owned good market.Novel sitting posture correction chair iPole7 is people's design of long-time sitting, for clerical workforce, student provide best sitting posture environment specially.With " allow backbone independently upright " for design concept, allow user can keep correct vertebra posture when taking one's seat.With the principle of " fulcrum is many, and component is few ", before chair, install one can the fulcrum of component, and the support of chest allows the backbone of sitting person and muscle of back independently lean forward.The pelvis of sitting can supporting arm part pressure, indirectly alleviates the pressure at back, allow back curve be tending towards normal level.The support of ancon alleviates the fatigue of neck shoulder.But this kind of health chair is expensive, and thoracic cavity leans against when thoracic cavity support works, easily has constriction and fatigue.Thoracic cavity support can not be used as other purposes such as backrest.Even naturally sitting posture, fixes and still has bad impact to vertebra in more than 20 minutes.Therefore, this kind of nursing chair be not suitable for the place to operate schools of modern scale.
Desk for preventing myopia is a kind of desk of special making, desk adds use compulsive measures such as " guardrails ", forces the sitting posture that children keep correct.This batch of tables and chairs are that student is equipped with by Adolescents of Wuhan low vision centre of prevention and cure, find out with a gag lever post, limit the amplitude of bending over of children, then shorten the distance between chair and desk, thus make the sitting posture that student keeps correct, form correct being accustomed to eye in order to supervise student.This way keeping myopia prevention sitting posture artificially with guardrail pressure student be good from starting point, but the height of each child is different, if height is not high, easily covered best line-of-sight by guardrail, if if doing so, the eyesight of child of long duration can be affected on the contrary.
Utility model content
The technical problems to be solved in the utility model is: in order to provide a kind of anti-drowsy desk and chair that corrects faulty sitting posture, smart structural design, practical, easy to use, can the sitting posture of automatic decision classmate whether correct, correct a mistake sitting posture in time, prevents drowsiness.
The utility model solves the technical scheme that its technical problem adopts: a kind of anti-drowsy desk and chair that corrects faulty sitting posture, comprise corresponding desk and seat, described seat comprises base, frame, buttocks chair top, leg chair top, the chair back, bracing frame and cylinder, described frame is vertically fixed on base, the described chair back is fixed on frame top, described buttocks chair top both sides are fixed with the first support column respectively, described leg chair top both sides are fixed with the second support column respectively, two first support column one end are flexibly connected with central rack respectively by hinge A, the two first support column other ends are flexibly connected with second support column one end respectively by hinge B, support frame as described above comprises depression bar, inner bracing piece, outer support bar and transiting rod, described two depression bar one end are flexibly connected with frame bottom respectively by hinge D, the two depression bar other ends are flexibly connected with two inner bracing piece one end respectively by hinge C, two inner bracing pieces are flexibly connected with two first support columns respectively by hinge B away from one end of hinge C, described two transiting rod one end are flexibly connected with depression bar one end respectively by hinge C, the two transiting rod other ends are flexibly connected with two outer support bar one end respectively by hinge E, two outer support bars are flexibly connected with two second support columns one end away from hinge B respectively by hinge F away from one end of hinge E, described cylinder is fixed on base, the push rod of cylinder is fixedly connected with the connecting rod between two depression bars.
For the ease of reminding the student dozed off, described frame upper end, described desk side edge are separately installed with proximity Hall switch sensor, desk both sides are separately installed with infrared emission photoelectric sensor, be provided with electric massage hammer below described buttocks chair top, described proximity Hall switch sensor, infrared emission photoelectric sensor are electrically connected with electric massage hammer respectively.Proximity Hall switch sensor, infrared emission photoelectric sensor can sense the incorrect sitting-pose of student, and beat buttocks chair top by electric massage hammer and remind student side right sitting position.
Described hinge D adopts large end to be Φ 26 taper bolt, and taper hole is fixed on depression bar, and cone post is fixed in frame and with bearing pin to be fixed, and by spring compression, the pressure between taper hole and cone post can adjust, because hinge D place is cone match, and being applied with pressure, moment of friction is larger.
In a preferred embodiment of the present utility model, described cylinder is damping cylinder, and cylinder can play damper or air spring, plays certain cushioning effect to the upset of buttocks chair top and leg chair top.
In a preferred embodiment of the present utility model, the angle that described first support column overturns downwards is 0 °-40 °, prevents buttocks chair top from causing because flip angle is excessive student to fall down from seat and causes danger.
In a preferred embodiment of the present utility model, described hinge A, hinge B, hinge C, hinge E, hinge F employing cylindrical is the cylinder hinge pin of 8mm, and structure is simple, easy to process.
The beneficial effect of the anti-drowsy desk and chair that corrects faulty sitting posture of the utility model is:
(1) in thinking in conjunction with classroom reality, by theory-loaded theory, sensor, PC control and mechanical self-latching principle are applied to combination desk design in, make it have structure ingenious, feature easy to use;
(2) structure designs ingenious, get think active, practical, can the sitting posture of automatic decision classmate whether correct, correct a mistake sitting posture in time, prevents drowsiness;
(3) in profile, simplicity generosity does not lose again attractive in appearance, manufacture can realize produce in enormous quantities, and has certain market demand;
(4) choose low raw-material cost, be beneficial to production, be convenient to promote the use of;
(5) this combination desk can play and corrects faulty sitting posture, pre-myopic-preventing effect in daily use, applies to can to play among classroom anti-drowsy in advance, enlivens classroom atmosphere, the object of improving the quality of teaching.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is the perspective view of the anti-drowsy desk and chair that corrects faulty sitting posture of the utility model;
Fig. 2 is the structural representation of seat under normal sitting position;
Fig. 3 is the force analysis figure of seat under normal sitting position;
Fig. 4 is the force analysis figure of seat under non-normal sitting position;
Fig. 5 is the structural representation of turnover seat under non-normal sitting position;
Fig. 6 is the control flow chart of the anti-drowsy desk and chair that corrects faulty sitting posture of the utility model;
In figure: 1. seat, 2. desk, 3. depression bar, 4. frame, 5. transiting rod, 6. outer support bar, 7. the second support column, 8. the first support column, 9. inner bracing piece, 10. base, 11. infrared emission photoelectric sensors, 12. proximity Hall switch sensors, 13. proximity Hall switch sensors, 14. electric massage hammers, 15. buttocks chair tops, 16. leg chair tops, 17. chair back, 18. cylinders.
Detailed description of the invention
By reference to the accompanying drawings the utility model is described in further detail now.These accompanying drawings are the schematic diagram of simplification, only basic structure of the present utility model are described in a schematic way, and therefore it only shows the formation relevant with the utility model.
As Fig. 1, shown in Fig. 2, a kind of anti-drowsy desk and chair that corrects faulty sitting posture, comprise corresponding desk 2 and seat 1, described seat 1 comprises base 10, frame 4, buttocks chair top 15, leg chair top 16, the chair back 17, bracing frame and cylinder 18, described frame 4 is vertically fixed on base 10, the described chair back 17 is fixed on frame 4 top, described buttocks chair top 15 both sides are fixed with the first support column 8 respectively, described leg chair top 16 both sides are fixed with the second support column 7 respectively, two first support column 8 one end are flexibly connected with in the middle part of frame 4 respectively by hinge A, two first support column 8 other ends are flexibly connected with second support column 7 one end respectively by hinge B, support frame as described above comprises depression bar 3, inner bracing piece 9, outer support bar 6 and transiting rod 5, described two depression bar 3 one end are flexibly connected with frame 4 bottom respectively by hinge D, two depression bar 3 other ends are flexibly connected with two inner bracing piece 9 one end respectively by hinge C, two inner bracing pieces 9 are flexibly connected with two first support columns 8 respectively by hinge B away from one end of hinge C, described two transiting rod 5 one end are flexibly connected with depression bar 3 one end respectively by hinge C, two transiting rod 5 other ends are flexibly connected with two outer support bar 6 one end respectively by hinge E, two outer support bars 6 are flexibly connected with two second support columns 7 one end away from hinge B respectively by hinge F away from one end of hinge E, described cylinder 18 is fixed on base 10, the push rod of cylinder 18 is fixedly connected with the connecting rod between two depression bars 3.
By by dozing off in classroom, the true classmate of abnormal sitting posture with attentively to listen to the teacher and the correct classmate of sitting posture carries out sitting posture contrast, we find when sitting posture is correct, and the center of gravity that human upper divides vertically acts on the rear portion of seat; And when classmate is in doze state or abnormal sitting posture is true time, the seat front end that the center of gravity that human upper divides then vertically acts on.For this reason, seat can be designed to two pieces of splicing structures, front end area is little, mainly the lower limb weight of grantee; Rear end area is large, mainly bears the weight of upper body.When sitting posture of student is incorrect, weight is born in front end will be increased.
Be found to be basis by above-mentioned, we visualize the anti-drowsy desk and chair that corrects faulty sitting posture of two four-bar mechanisms as shown in Figure 1 and Figure 2, and in size and specification and conventional chair without too large difference.In the selection of material, after contrasting the various material be easy to get in market, the aluminum alloy square tube that our final choice is cheap and the good nylon of frictional behaviour are the basic material making the design.
Hinge D adopts large end to be Φ 26 taper bolt, and taper hole is fixed on depression bar 3, and cone post is fixed in frame 4 and with bearing pin to be fixed, and by spring compression, the pressure between taper hole and cone post can adjust, because hinge D place is cone match, and being applied with pressure, moment of friction is larger.When classmate be in attentively listen to the teacher and sitting posture is correct time, human body to seat applied pressure G1, G2 and resultant direction G as shown in Figure 3, now the first support column 8 and the second support column 7 are on same straight line, and depression bar 3, transiting rod 5 and outer support bar 6 are on same straight line.Because transiting rod 5, outer support bar 6 are in a straight line, just be equivalent to two power bars, the resultant direction G of inner bracing piece 9, transiting rod 5 pairs of depression bars 3 cuts mutually with the friction circle of hinge D, and now system is in stable state, and buttocks chair top 15, leg chair top 16 can not overturn downwards.Cylinder 18 push rod plays position-limiting action at this moment, ensures that the resultant direction G of inner bracing piece 9, transiting rod 5 pairs of depression bars 3 is on the friction circle top of hinge D, does not almost affect stressing conditions.
When classmate is in doze state or abnormal sitting posture is true, human upper divides gravity to move forward to the pressure of seat, inner bracing piece 9, the resultant direction G of transiting rod 5 pairs of depression bars 3 and the friction circle of hinge D from, as shown in Figure 4, now the horizontal stable state of buttocks chair top 15, leg chair top 16 is broken, will overturn downwards, as shown in Figure 5.Damping cylinder 18 plays damper or air spring at this moment, has overturn certain cushioning effect to buttocks chair top 15, leg chair top 16.Because leg chair top 16 overturns downwards, namely second support column 7 drives outer support bar 6 and transiting rod 5 to overturn near one end of hinge F downwards, relative, transiting rod 5 upwards overturns near one end of hinge C, because buttocks chair top 15 overturns downwards, namely first support column 8 drives inner bracing piece 9 to overturn near one end of hinge B downwards, and relative, inner bracing piece 9 upwards overturns near one end of hinge C.Now, the push rod of cylinder 18 stretches out, and the push rod of cylinder 18 promotes the connecting rod between two depression bars 3, and depression bar 3 is upwards overturn near one end of hinge C.Simultaneously in the arrangement space and length determination of each bar, when the first support column 8 is rotated down certain angle, and depression bar 3 is when rotating up certain angle, first support column 8 touches the upper end of depression bar 3, and the angle of buttocks supporting surface 15 upset is downwards maximum, is about 40 °, first support column 8 props up by depression bar 3, prevent it from continuing to be rotated down, now student's health will glide, but can ensure the safety of student.
Wherein, described hinge A, hinge B, hinge C, hinge E, hinge F employing cylindrical is the cylinder hinge pin of 8mm, and structure is simple, easy to process.
According to field observation, the bad sitting posture of student generally has following several situation: 1) forward lean, and chest presses close to desk edge; 2) head books on table are too near; 3) back is away from the chair back.In order to the sitting posture allowing student keep good, we have employed dissimilar sensor in above-mentioned several state, on the edge and the chair back in student direction, proximity Hall switch sensor 12,13 is separately installed with at desktop, in the both sides of desk, infrared emission photoelectric sensor 11 is housed, take up room less, again can Sensitive Detection to the incorrect sitting-pose of student.When student's forward lean, chest presses close to desk edge, when back is away from the chair back, two proximity Hall switch sensors 12,13 detect body signal, and when books are too near on table for student's head, two infrared emission photoelectric sensors 11 detect body signal, after above-mentioned three place's sensors receive signal, the electric massage hammer 14 be arranged on below buttocks chair top 15 will be energized, and carries out beaing of suitable dynamics to the buttocks of student, reminds student side right sitting position.
Fig. 6 is circuit theory diagrams of the present utility model, and by PC Long-distance Control cylinder functions expanding part, thus control cylinder 18 stretches.Open master switch, be fixed on the human body proximity switch (proximity Hall switch sensor 12) of desk, the proximity switch (proximity Hall switch sensor 13) of the human body back be fixed on the chair back and infrared emission photoelectric sensor 11 to start working, receive the signal of human body mistake sitting posture, and signal is sent to STC90C51 control module, the electric massage hammer 14 buttocks chair top 15 that STC90C51 control module controls buttocks chair top 15 back impacts, and keeps correct sitting posture to remind student.
The beneficial effect of the anti-drowsy desk and chair that corrects faulty sitting posture of the utility model is:
(1) in thinking in conjunction with classroom reality, by theory-loaded theory, sensor, PC control and mechanical self-latching principle are applied to combination desk design in, make it have structure ingenious, feature easy to use;
(2) structure designs ingenious, get think active, practical, can the sitting posture of automatic decision classmate whether correct, correct a mistake sitting posture in time, prevents drowsiness;
(3) in profile, simplicity generosity does not lose again attractive in appearance, manufacture can realize produce in enormous quantities, and has certain market demand;
(4) choose low raw-material cost, be beneficial to production, be convenient to promote the use of;
(5) this combination desk can play and corrects faulty sitting posture, pre-myopic-preventing effect in daily use, applies to can to play among classroom anti-drowsy in advance, enlivens classroom atmosphere, the object of improving the quality of teaching.
With above-mentioned according to desirable embodiment of the present utility model for enlightenment, by above-mentioned description, relevant staff in the scope not departing from this utility model technological thought, can carry out various change and amendment completely.The technical scope of this utility model is not limited to the content on description, must determine its technical scope according to right.
Claims (6)
1. the anti-drowsy desk and chair that corrects faulty sitting posture, comprise corresponding desk and seat, it is characterized in that: described seat comprises base, frame, buttocks chair top, leg chair top, the chair back, bracing frame and cylinder, described frame is vertically fixed on base, the described chair back is fixed on frame top, described buttocks chair top both sides are fixed with the first support column respectively, described leg chair top both sides are fixed with the second support column respectively, two first support column one end are flexibly connected with central rack respectively by hinge A, the two first support column other ends are flexibly connected with second support column one end respectively by hinge B, support frame as described above comprises depression bar, inner bracing piece, outer support bar and transiting rod, described depression bar one end is flexibly connected with frame bottom respectively by hinge D, the depression bar other end is flexibly connected with two inner bracing piece one end respectively by hinge C, two inner bracing pieces are flexibly connected with two first support columns respectively by hinge B away from one end of hinge C, described transiting rod one end is flexibly connected with depression bar one end respectively by hinge C, the transiting rod other end is flexibly connected with two outer support bar one end respectively by hinge E, two outer support bars are flexibly connected with two second support columns one end away from hinge B respectively by hinge F away from one end of hinge E, described cylinder is fixed on base, the push rod of cylinder is fixedly connected with the connecting rod between two depression bars.
2. the anti-drowsy desk and chair that corrects faulty sitting posture as claimed in claim 1, it is characterized in that: described frame upper end, described desk side edge are separately installed with proximity Hall switch sensor, desk both sides are separately installed with infrared emission photoelectric sensor, be provided with electric massage hammer below described buttocks chair top, described proximity Hall switch sensor, infrared emission photoelectric sensor are electrically connected with electric massage hammer respectively.
3. the anti-drowsy desk and chair that corrects faulty sitting posture as claimed in claim 1, is characterized in that: described hinge D adopts large end to be Φ 26 taper bolt, and taper hole is fixed on depression bar, and cone post is fixed in frame and with bearing pin to be fixed, and passes through spring compression.
4. the anti-drowsy desk and chair that corrects faulty sitting posture as claimed in claim 1, is characterized in that: described cylinder is damping cylinder.
5. the anti-drowsy desk and chair that corrects faulty sitting posture as claimed in claim 1, is characterized in that: the angle that described first support column overturns downwards is 0 °-40 °.
6. the anti-drowsy desk and chair that corrects faulty sitting posture as claimed in claim 1, is characterized in that: described hinge A, hinge B, hinge C, hinge E, hinge F adopt cylindrical to be the cylinder hinge pin of 8mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420527425.3U CN204169328U (en) | 2014-09-15 | 2014-09-15 | The anti-drowsy desk and chair that corrects faulty sitting posture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420527425.3U CN204169328U (en) | 2014-09-15 | 2014-09-15 | The anti-drowsy desk and chair that corrects faulty sitting posture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204169328U true CN204169328U (en) | 2015-02-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420527425.3U Withdrawn - After Issue CN204169328U (en) | 2014-09-15 | 2014-09-15 | The anti-drowsy desk and chair that corrects faulty sitting posture |
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| Country | Link |
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| CN (1) | CN204169328U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104207478A (en) * | 2014-09-15 | 2014-12-17 | 江苏理工学院 | Non-drowsy sitting posture correcting desk and chair |
| CN107853908A (en) * | 2017-11-29 | 2018-03-30 | 黄跃 | A kind of anti-drowsy seat of English education |
-
2014
- 2014-09-15 CN CN201420527425.3U patent/CN204169328U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104207478A (en) * | 2014-09-15 | 2014-12-17 | 江苏理工学院 | Non-drowsy sitting posture correcting desk and chair |
| CN107853908A (en) * | 2017-11-29 | 2018-03-30 | 黄跃 | A kind of anti-drowsy seat of English education |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150225 Effective date of abandoning: 20160608 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20150225 Effective date of abandoning: 20160608 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |