CN103202603B - Backrest and knee rest the head on position can adjust the therapeutic class tables and chairs that seat has lag function - Google Patents
Backrest and knee rest the head on position can adjust the therapeutic class tables and chairs that seat has lag function Download PDFInfo
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- CN103202603B CN103202603B CN201210015814.3A CN201210015814A CN103202603B CN 103202603 B CN103202603 B CN 103202603B CN 201210015814 A CN201210015814 A CN 201210015814A CN 103202603 B CN103202603 B CN 103202603B
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- seat
- knee
- chair leg
- backrest
- head
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- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
Abstract
The invention provides backrest that a kind of applicable student uses and knee to rest the head on position and can adjust the therapeutic class tables and chairs that seat has lag function.This desk and chair adopts combining structure assembled, and the below of desk is provided with the knee pillow of support knee.Seat flip angle, knee pillow position, backrest height three all can shape adjustment easily with user preset, guarantee correct set, feel comfortable, effectively can alleviate sitting and the fatigue that causes, again can the illness such as Anti-myopic eye and hunchback in advance.The seat with lag function can facilitate student " to stand up " with the posture of attentioning, " sitting down ", gathering of can being folded back at seat smoothly when people leaves, vacates nearly 2/5 floor space and makes way for classroom activity space and facilitate student's rapid evacuation.The present invention's processing, assembling are common process, and combining structure facilitates factory to produce with the form of assembly, case, store in a warehouse, transport, on-site consolidation, can save production, storage, transport space greatly.
Description
Technical field
The present invention relates to backrest that a kind of student used upper class hour and knee to rest the head on position and can adjust the therapeutic class tables and chairs that seat has lag function.Particularly a kind of schooling apparatus with excellent health functions according to base of principle of human engineering design.
Technical background
At present, the desk and chair that students uses when making student bend over the desk to write muscle of trunk group be in the larger static balance state of stress, easily tired, sat of a specified duration then yielding one-tenth to bend over the incorrect sitting-pose of hogback.This is also that groups of people suffer from lumbodorsal muscle pain, the one of the main reasons of the diseases such as the deformity of spinal column.In addition, no matter split or the desk and chair of disjunctor to be saluted to teacher because the very inconvenient student of existence of chair (stool) " stands up " and answered the question, be also unfavorable for that student is from classroom rapid evacuation.
Summary of the invention
Instant invention overcomes deficiency of the prior art, provide backrest that a kind of applicable student uses and knee and rest the head on position and can adjust the therapeutic class tables and chairs that seat has lag function.Technical scheme of the present invention is: table body, support, knee pillow, seat, backrest five parts adopt combining structure to be assembled into one, and table body is arranged on support front; Knee pillow is arranged on the below of a body; Take support as fixed bar, the four-bar mechanism that chair leg 8, drag link 30, lower link 32 are formed for motion bar forms seat together with the seat 9 be articulated with on chair leg 8, base plate 21; Backrest is arranged on support rear.The locus of described knee pillow can adjust preset; Described seat is that its flip angle that can overturn can adjust preset, and gathering of can folding back; Described backrest can adjust preset up and down.
Benefit of the present invention is embodied in following three aspects:
One: when people to be sitting on the seat leaned forward the portion of bending knee after shank withstand on knee pillow upper time body lean forward, high oblique desktop can be faced without hogback or eyes of bowing, form suitable sighting distance and visual angle.The body center of gravity leaned forward is between buttocks and knee shares body weight by seat, knee pillow and shank, and allow human vertebra still be in normal physiological curve state, avoiding traditional " bending over the desk " sitting posture needs muscle of trunk group to be in the larger static balance state of stress for a long time and the fatigue produced and sitting is not tired out.When people is flat be seated on seat time, backrest be just in time supported on waist S crook make its kept easily coming back square one's shoulders sit up straight posture.Its seat flip angle, knee pillow position, backrest height three all can adjust preset with the people of different building shape, thus can the tailor-made effect of degree of reaching body to each user.The seat with lag function can facilitate student " to stand up " with the posture of " attentioning ", " sitting down ".
Its two: floor space is little, and seat can be vacateed nearly 2/5 area and makes way for classroom activity space after drawing in, is conducive to student's after school activity and rapid evacuation.
Its three: the present invention is rational in infrastructure, sturdy and durable, materials economize, processing, assembling be common process, combining structure facilitate factory lines produce assembly, with kit vanning storage, transport, on-site consolidation.The like product of relative overall structure can also save production, storage, transport space greatly, thus reduces operating cost.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Fig. 1 is structural representation of the present invention.
Fig. 2 is the structural representation of knee pillow.
Fig. 3 is the structural representation at seat.
Fig. 4 is the structural representation of chair leg end.
Fig. 5 is the structural representation of back lifting gearing.
Fig. 6 is knee pillow position, seat upset schematic diagram.
Fig. 7 is that seat is made way for people and to be stood up position view.
Fig. 8 is the folding gathering in seat schematic diagram.
Fig. 9 rocking arm buckle schematic diagram.
In figure: table body 1 collet 2 support side lever 3 knee is rested the head on 4 Houghs and pressed from both sides 5 support front rail 6 support rear transverse rod 7 chair leg 8 seat 9 backrest 10 knee pillow strut 11 draw-bar seat 12 chair leg hinged bulb 13 back lifting nut 14 slide block 15 knee pillow location regulating handle 16 rocking arm 17 rocking arm holding screw 18 knee pillow top frame 19 knee pillow top 20 base plate 21 clip 22 clip spacing fender 24 stop nut 25 locking nut 26 of screw 23 spacing handle 27 locating hole 28 nylon bush 29 drag link 30 pull bar holding screw 31 lower link 32 seat fender 33 Internal Spherical Surface nylon bush 34 end cap 35 Internal Spherical Surface back-up ring 36 elastic spring 37 back lifting screw rod 38 square hole packing ring 39 large washer 40 back lifting handle 41 handle holding screw 42
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further detail: the present invention adopts combining structure to be formed by table body, support, knee pillow, seat, backrest five parts assemblies.
Support comprises: the collet 2 in Fig. 1, support side lever 3, Hough folder 5, support front rail 6, support rear transverse rod 7, the knee pillow strut 11 in Fig. 2, draw-bar seat 12, the hinged bulb 13 of chair leg in Fig. 4, the back lifting nut 14 in Fig. 5 in Fig. 3.Wherein, the hinged bulb 13 of collet 2 chair leg, chair back lifting nut 14, be welded on support side lever 3 respectively; Knee pillow strut 11 is welded on support front rail 6; Draw-bar seat 12 is welded on support rear transverse rod 7; Whole support presss from both sides 5 by Hough and connects locking.
Be provided with the hole corresponding with collet 2 bottom table body 1, the two is connected as a single entity with screw.
Knee pillow 4 comprises: the slide block 15 in Fig. 2, knee pillow location regulating handle 16, rocking arm 17, rocking arm holding screw 18, knee pillow top frame 19, knee pillow top 20.Wherein, rocking arm (17) is relatively fastened by upper and lower two parts and forms; front end is cladding embedding-and-buckling-structured; be relatively fastened on described support front rail 6 up and down; with formed with it hinged for hinge axis, rocking arm holding screw (18) by fasten after rocking arm (17) rear portion be fastened as a whole; 19, knee pillow top frame is limited at rocking arm about 17 two parts and fastens in the slot formed, and knee pillow top 20 is arranged on knee pillow top frame 19, and described knee pillow top 20 can be made up of fabric or leather or plastics or metal material; The radial direction through hole of slide block 15 one end is axially enclosed within it in being slidably matched in the support 11 of described knee pillow, and other end screw portion is rested the head on through the slotted hole that rocking arm 17 is arranged and knee and located the internal thread that regulating handle 16 cylindrical end arranges and screw.Unscrew described knee pillow location regulating handle 16 hold its band movable slider 15 follow knee pillow strut 11 move axially, slide block 15 acts on the radial component of slotted hole that rocking arm 17 is arranged and namely promotes knee pillow 4 and rotate around support front rail 6, thus the locus changed residing for knee pillow top 20, to regulate its height corresponding to user's knee, distance, screw knee pillow location regulating handle 16 after adjustment puts in place and rocking arm 17 and knee are rested the head on strut 11 is relative to be locked, namely complete knee and rest the head on the preset of 4 locus, as shown in Figure 6: A is for adapting to leg comparatively elder position; C is for adapting to leg shorter one position; B is centre position.
Seat comprises: the Internal Spherical Surface nylon bush 34 in the base plate 21 in the chair leg 8 in Fig. 1, seat 9, Fig. 3, clip 22, clip screw 23, spacing fender 24, stop nut 25, locking nut 26, spacing handle 27, nylon bush 29, drag link 30, pull bar holding screw 31, lower link 32, seat fender 33, Fig. 4, end cap 35, Internal Spherical Surface back-up ring 36, elastic spring 37.Wherein, seat 9 and base plate 21 are provided with corresponding both holes and are integrated by screw attachment, the centre of chair leg 8 horizontal position and both sides symmetric position are provided with three groups of locating holes 28, the inner surface of nylon bush 29 is provided with locator protrusions, outer surface two ends are provided with flange, three pairs of nylon bush 29 are aimed at locating hole 28 respectively and are fastened on chair leg 8, two pairs of clips 22 are fastened on the nylon bush 29 of chair leg 8 above-mentioned both sides symmetric position respectively relatively, clip screw 23 screws in the screwed hole that base plate 21 is arranged through the hole on clip 22, locking, enable seat 9 with chair leg 8 horizontal position for hinge axis is that relative chair leg 8 horizontal position of chain connection makes flip-flop movement, as Fig. 7, shown in Fig. 8.Drag link 30 is made up of two parts, be relatively fastened on up and down on the nylon bush 29 in the middle of above-mentioned chair leg 8 horizontal position with for hinge axis is with it in hinge-coupled, drag link about 30 two parts after fastening are connected as one by pull bar holding screw 31; Stop nut 25 outer surface is provided with external screw thread upper end and is provided with flange, from top to bottom through the through hole of drag link 30 front end after above-mentioned relative fastening, with locking nut 26, stop nut 25 is locked at drag link 30 front end; Spacing handle 27 screw portion from bottom to top screws in stop nut 25, and rotary limiting handle 27 distance adjusted between its end with base plate 21 can limit the flip angle of seat 9 relative chair leg 8 horizontal position.Seat fender 33 is enclosed within drag link 30 tail end, forms the support plane of seat with base plate 21 together with two pin joints of chair leg 8.Lower link 32 two ends respectively with draw-bar seat 12 hinge-coupled in drag link 30, Fig. 1.End cap 35 in Fig. 4 connects firmly with chair leg 8 end and connects, Internal Spherical Surface nylon bush 34 is arranged on chair leg 8 end, its Internal Spherical Surface and the hinged bulb 13 of chair leg match, Internal Spherical Surface back-up ring 36 inserts from the cylinder position of the hinged bulb 13 of chair leg and holds bulb from below, elastic spring 37 is arranged in groove that end cap 34 is arranged and blocks Internal Spherical Surface back-up ring 36, makes chair leg 8 and support be hinge-coupled.
Take support as fixed bar, chair leg 8, drag link 30, lower link 32 are that the four-bar mechanism of motion bar forms seat together with the seat 9 be articulated with on chair leg 8, base plate 21.As shown in Figure 1: turn to moving seat 9 after gravity center of human body the seat providing and be suitable for sitting up straight posture of can behaving when two pin joints of base plate 21 and chair leg 8 and seat fender 33 form a support plane.As shown in Figure 6: turn to can to behave when two pin joints of base plate 21 and chair leg 8 and spacing handle 27 end form a support plane with gravity center of human body's seat 9 that moves forward the seat of the writing posture that is suitable for bending over the desk is provided.As shown in Figure 7: take advantage of a situation to drive seat to fold back can to vacate segment space allow student's accessible " standing up " along with leg stretches its posterior leg when student " stands up ", now chair leg 8 is not more than 90 degree with the angle on ground, along with student " sit down " bending leg time, the i.e. reinstatement under gravity against the seat of posterior leg.As shown in Figure 8: chair leg 8 to swing when to be greater than 90 degree with the angle on ground the gathering of folding back of seat under gravity backward and makes way for classroom activity space.
10. hoisting gear for backrest comprises: the back lifting nut 14 in Fig. 5, back lifting screw rod 38, square hole packing ring 39, large washer 40, back lifting handle 41, handle holding screw 42.Wherein, back lifting screw rod 38 screws in the back lifting nut 14 be welded on support side lever 3, square hole packing ring 39, large washer 40 order is enclosed within the square tenon of back lifting screw rod 38 upper end setting, backrest 10 in Fig. 1 is enclosed within support side lever 3 and is slidably matched with it, the square tenon that back lifting screw rod 38 upper end is arranged passes through hole and chair back lifting handle 41 joggle that backrest 10 is arranged, and itself and back lifting handle 41 are locked by the screw hole that handle holding screw 42 screws in the setting of back lifting screw rod 38 end.The backrest 10 that 41 drives of rotary backrest lifting handle are limited between large washer 40 and back lifting handle 41 moves up and down to be adjusted to position most suitable with user's waist along support side lever 3.
Claims (9)
1. a backrest and knee are rested the head on position and can be adjusted the therapeutic class tables and chairs that seat has lag function, comprise support, table body, knee is rested the head on, seat, backrest, it is characterized in that: described support is composite assembly structure, by support front rail (6), support rear transverse rod (7) and two support side levers (3) form with Hough folder (5) tight joint, described support front rail (6) is provided with knee pillow strut (11), described support rear transverse rod (7) is provided with draw-bar seat (12), described support side lever (3) is U-shaped structure, the end of anterior vertical component is provided with collet (2), the end of posterior vertical part is provided with back lifting nut (14), the back segment of horizontal component is provided with the hinged bulb of chair leg (13), described knee pillow is arranged on its locus below a body and can adjusts preset, described seat is by taking support as fixed bar, the four-bar mechanism that chair leg (8), drag link (30), lower link (32) are formed for motion bar is formed together with the base plate (21) be articulated with on chair leg (8), seat (9), and described seat is its flip angle that can overturn is can adjust preset also can folding back to draw in, described backrest is arranged on its upper-lower position of support rear and can adjusts preset.
2. backrest according to claim 1 and knee are rested the head on position and can be adjusted the therapeutic class tables and chairs that seat has lag function, it is characterized in that: described knee pillow is for spelling embedding structure, comprise: slide block (15), knee pillow location regulating handle (16), rocking arm (17), rocking arm holding screw (18), knee pillow top frame (19), knee pillow top (20), wherein: rocking arm (17) is relatively fastened by upper and lower two parts and forms, front end is cladding embedding-and-buckling-structured, and rocking arm (17) rear portion after fastening is fastened as a whole by rocking arm holding screw (18); Knee pillow top frame (19) is arranged on the upper and lower two parts of rocking arm (17) and fastens in the slot formed; Knee pillow top (20) is arranged on knee pillow top frame (19), and described knee pillow top (20) can be made up of fabric or leather or plastics or timber or metal material; The radial direction through hole of slide block (15) one end is axially enclosed within it in being slidably matched on described knee pillow strut (11), and other end screw portion is rested the head on through the upper slotted hole that arranges of rocking arm (17) and knee and located the internal thread that regulating handle (16) cylindrical end arranges and screw the device forming and adjust the locus that preset knee is rested the head on.
3. backrest according to claim 2 and knee are rested the head on position and can be adjusted the therapeutic class tables and chairs that seat has lag function, it is characterized in that: rocking arm (17) the upper and lower two parts in described knee pillow be relatively fastened on described support front rail (6) on for hinge axis be with it chain connection.
4. backrest according to claim 1 and knee are rested the head on position and can be adjusted the therapeutic class tables and chairs that seat has lag function, it is characterized in that: centre and the both sides symmetric position of described chair leg (8) horizontal position are provided with three groups of locating holes (28), the inner surface of nylon bush (29) is provided with locator protrusions outer surface two ends and is provided with flange, three pairs of nylon bush (29) are aimed at locating hole (28) respectively and are relatively fastened on chair leg (8), two pairs of clips (22) are fastened on the nylon bush (29) of chair leg (8) horizontal position both sides symmetric position respectively relatively, seat (9) can make flip-flop movement by chair leg (8) horizontal position relatively.
5. backrest according to claim 4 and knee are rested the head on position and can be adjusted the therapeutic class tables and chairs that seat has lag function, it is characterized in that: described drag link (30) is made up of two parts, on the nylon bush (29) being relatively fastened on described chair leg (8) horizontal position centre position up and down with for hinge axis is with it in hinge-coupled; Seat fender (33) is enclosed within drag link (30) tail end; Stop nut (25), locking nut (26), spacing handle (27) are arranged on the front end of drag link (30); Rotary limiting handle (27) distance that can adjust between its end with base plate (21) limits the flip angle of seat (9) relative chair leg (8) horizontal position.
6. backrest according to claim 5 and knee are rested the head on position and can be adjusted the therapeutic class tables and chairs that seat has lag function, it is characterized in that: described lower link (32) two ends respectively with drag link (30), draw-bar seat (12) hinge-coupled; The inside and outside of described chair leg (8) end is respectively arranged with Internal Spherical Surface nylon bush (34), end cap (35); Internal Spherical Surface nylon bush (34) is relative with Internal Spherical Surface back-up ring (36) and contain the hinged bulb of chair leg (13); Elastic spring (37) is provided with in the upper groove arranged of end cap (35).
7. backrest according to claim 5 and knee are rested the head on position and can be adjusted the therapeutic class tables and chairs that seat has lag function, it is characterized in that: two pin joints and the seat fender (33) of described base plate (21) and chair leg (8) can form the support plane that a suitable people sits up straight posture; Two pin joints of described base plate (21) and chair leg (8) and spacing handle (27) end can form a suitable people and to bend over the desk the support plane of writing posture.
8. backrest according to claim 6 and knee are rested the head on position and can be adjusted the therapeutic class tables and chairs that seat has lag function, it is characterized in that: described seat can reinstatement under gravity when chair leg (8) is rocked to backward and is less than 90 degree with ground angle, can under gravity in folding rounding state when being greater than 90 degree.
9. backrest according to claim 1 and 2 and knee are rested the head on position and can be adjusted the therapeutic class tables and chairs that seat has lag function, it is characterized in that: the freely up and down degree of described backrest is limited between back lifting handle (41) and the upper stopping means arranged of back lifting screw rod (38), and rotary backrest lifting handle (41) can drive backrest to move up and down position along support side lever (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210015814.3A CN103202603B (en) | 2012-01-17 | 2012-01-17 | Backrest and knee rest the head on position can adjust the therapeutic class tables and chairs that seat has lag function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210015814.3A CN103202603B (en) | 2012-01-17 | 2012-01-17 | Backrest and knee rest the head on position can adjust the therapeutic class tables and chairs that seat has lag function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103202603A CN103202603A (en) | 2013-07-17 |
| CN103202603B true CN103202603B (en) | 2016-02-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210015814.3A Expired - Fee Related CN103202603B (en) | 2012-01-17 | 2012-01-17 | Backrest and knee rest the head on position can adjust the therapeutic class tables and chairs that seat has lag function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103202603B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104006650B (en) * | 2014-04-29 | 2016-01-13 | 青岛金智高新技术有限公司 | A kind of removable cover picking and placeing part |
| CN106165967A (en) * | 2016-07-26 | 2016-11-30 | 胡忠梁 | A kind of integral-type folding table/chair |
| CN106073248A (en) * | 2016-07-31 | 2016-11-09 | 徐进华 | Chair and riding system |
| CN108968379A (en) * | 2018-08-13 | 2018-12-11 | 常傲寒 | A kind of sitting-posture correction device |
| CN110916410B (en) * | 2019-12-12 | 2023-10-31 | 周吴迪 | Student chair convenient for outdoor use |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87203924U (en) * | 1987-11-02 | 1988-07-20 | 周千合 | Adjustable school desks and chairs for children |
| FR2689737A1 (en) * | 1992-04-13 | 1993-10-15 | Baldo Emmanuel | Adjustable desk seat and knee support - has knee support pivoting on axle and parts fixed together by screws screwed into holes in base of supports |
| CN2148491Y (en) * | 1992-06-12 | 1993-12-08 | 赵家俊 | Health care desk and chair |
| CN2174099Y (en) * | 1993-10-29 | 1994-08-17 | 刘继震 | Health care desk and chair for pupil |
| RU2262874C1 (en) * | 2004-03-29 | 2005-10-27 | Сергеев Евгений Николаевич | Orthopedic desk |
| CN202739212U (en) * | 2012-01-17 | 2013-02-20 | 燕鸣 | Health care desk and chair with backrest and knee pillow capable of adjusting position and seat capable of moving with people |
-
2012
- 2012-01-17 CN CN201210015814.3A patent/CN103202603B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87203924U (en) * | 1987-11-02 | 1988-07-20 | 周千合 | Adjustable school desks and chairs for children |
| FR2689737A1 (en) * | 1992-04-13 | 1993-10-15 | Baldo Emmanuel | Adjustable desk seat and knee support - has knee support pivoting on axle and parts fixed together by screws screwed into holes in base of supports |
| CN2148491Y (en) * | 1992-06-12 | 1993-12-08 | 赵家俊 | Health care desk and chair |
| CN2174099Y (en) * | 1993-10-29 | 1994-08-17 | 刘继震 | Health care desk and chair for pupil |
| RU2262874C1 (en) * | 2004-03-29 | 2005-10-27 | Сергеев Евгений Николаевич | Orthopedic desk |
| CN202739212U (en) * | 2012-01-17 | 2013-02-20 | 燕鸣 | Health care desk and chair with backrest and knee pillow capable of adjusting position and seat capable of moving with people |
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| Publication number | Publication date |
|---|---|
| CN103202603A (en) | 2013-07-17 |
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