CN103202603A

CN103202603A - Health-care desk-chair with adjustable backrest and knee pillow positions and seat following function

Info

Publication number: CN103202603A
Application number: CN2012100158143A
Authority: CN
Inventors: 燕鸣
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-01-17
Filing date: 2012-01-17
Publication date: 2013-07-17
Anticipated expiration: 2032-01-17
Also published as: CN103202603B

Abstract

The invention provides a health-care desk-chair with adjustable backrest and knee pillow positions and a seat following function. The desk-chair is formed by splicing combined structures; a knee pillow for supporting knees is arranged below the desk; the overturning angle of a seat, the position of the knee pillow and the height of a backrest can be adjusted and preset conveniently according to the shape of a user, so that a student can keep a correct posture and feels comfortable, fatigue caused by sitting for a long time can be relieved effectively, and diseases such as myopia, humpback and the like can be prevented. The seat having the following function can be convenient for the student to ''stand up'' and ''sit down'' in a mode of standing at attention. When a person leaves the seat, the seat can be folded backwards and retracted without difficulty, so that approximately two fifth of the floor area of a classroom is saved, and students in a classroom moving space can evacuate rapidly. The health-care desk-chair is processed and assembled by adopting ordinary processes, and is convenient for production, tanking, storing, transportation and field splicing in the forms of assemblies in plants due to a combined structure; and production, storing and transportation spaces can be saved greatly.

Description

The health care desk and chair that the seat has lag function can be adjusted in backrest and knee pillow position

Technical field

Upward the health care desk and chair that the seat has lag function can be adjusted in backrest and the knee pillow position of class hour use to the present invention relates to a kind of student.A kind of schooling apparatus with excellent health functions according to ergonomics principle design particularly.

Technical background

At present, the muscle of trunk group was in the bigger static balance state of stress when the desk and chair that students is used made the student bend over the desk to write, and is tired easily, sits the bend over incorrect sitting-pose of hogback of yielding one-tenth then of a specified duration.This also is that groups of people suffer from lumbodorsal muscle pain, the one of the main reasons of diseases such as the deformity of spinal column.In addition, no matter split or the desk and chair of disjunctor are unfavorable for that also the student is from the classroom rapid evacuation because the very inconvenient student of existence of chair (stool) " stands up " and salutes and answer the question to teacher.

Summary of the invention

The present invention has overcome deficiency of the prior art, and the health care desk and chair that the seat has lag function can be adjusted in the backrest and the knee pillow position that provide a kind of suitable student to use.Technical scheme of the present invention is: table body, support, knee pillow, seat, five parts of backrest adopt combining structure to be assembled into one, and the table body is arranged on support the place ahead; The knee pillow is arranged on the below of a body; Be fixed bar with the support, chair leg 8, drag link 30, lower link 32 constitute seats for the four-bar mechanism that motion bar forms together with the seat 9, the base plate 21 that are articulated on the chair leg 8; Backrest is arranged on the support rear.The locus of described knee pillow can be adjusted and preset; Described seat is that its flip angle that can overturn can be adjusted and presets, and can fold back and draw in; Described backrest can be adjusted up and down and preset.

Benefit of the present invention is embodied in following three aspects:

One: when the people be sitting on the seat that leans forward behind the shank portion of bending knee withstand on the knee pillow when going up body lean forward, can face high oblique desktop without hogback or the eyes of bowing, form suitable sighting distance and visual angle.The body center of gravity that leans forward is between buttocks and the knee and shares body weight by seat, knee pillow and shank, and allow human vertebra still be in the normal physiological curve state, avoided traditional " bending over the desk " sitting posture to need the muscle of trunk group to be in the bigger static balance state of stress for a long time and the fatigue that produces and sitting is tired.When the people is flat when being seated on the seat, backrest just in time is supported on the posture of sitting up straight that waist S crook makes it be kept easily coming back and square one's shoulders.Its seat flip angle, knee pillow position, backrest height three all can adjust with the people of different builds and preset, thereby can both the tailor-made effect of degree of reaching body to each user.Seat with lag function can make things convenient for the student with the posture of " attentioning " " stand up ", " sitting down ".

Its two: floor space is little, and the seat can vacate nearly 2/5 area after drawing in and make way for the classroom activity space, is conducive to student's after school activity and rapid evacuation.

Its three: the present invention is rational in infrastructure, and is sturdy and durable, and materials are economized, and processing, assembling are common process, and combining structure makes things convenient for factory's streamline to produce assembly, with kit vanning storage, transportation, on-site consolidation.Integrally-built relatively like product can also be saved production, storage, transport space greatly, thereby reduces operating cost.

Description of drawings

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 backrest elevating mechanism.

Fig. 6 is knee pillow position, seat upset schematic diagram.

Fig. 7 is that people's position view that stands up is made way at the seat.

Fig. 8 is the folding schematic diagram that draws in seat.

Fig. 9 rocking arm buckle schematic diagram.

Figure: Table body 1, Bottom bracket 2, Bracket side lever 3, Knee pillows 4, Huff clip 5, Bracket front crossbar 6, Stent crossbar 7, Chair legs 8, Sitting board 9, Backrest 10, Knee brace pillow 11, rod Seat 12, chair legs hinged ball 13, back down nut 14, slider 15, knee pillows positioning adjustment handle 16, rocker 17, rocker arm set screws 18, knee pillow face frame 19, knee pillow face 20, backplane 21 , clamp 22, clamp screw 23, limit fenders 24, stopper nut 25, locknut 26, stopper lever 27, locating holes 28, nylon bushing 29, tie rod 30, rod set screws 31, lower link 32, sitting board touch pad 33, inner spherical nylon lining 34, cap 35, inner spherical ring 36, wire ring 37, backrest lifting screw 38, square hole washer 39, large washer 40 backrest lift handle 41, handle set screw 42

The specific embodiment

Below in conjunction with accompanying drawing the present invention is described in further detail: the present invention adopts combining structure assembled by table body, support, knee pillow, seat, five parts of backrest.

Support comprises: the collet 2 among Fig. 1, support side lever 3, Hough folder 5, support front rail 6, support rear transverse rod 7,, the backrest lifting nut 14 in the knee pillow strut 11 among Fig. 2, the draw-bar seat 12 among Fig. 3, the hinged bulb 13 of the chair leg among Fig. 4, Fig. 5.Wherein, the hinged bulb 13 of collet 2 chair legs, chair back lifting nut 14, be welded on the support side lever 3 respectively; Knee pillow strut 11 is welded on the support front rail 6; Draw-bar seat 12 is welded on the support rear transverse rod 7; Entire bracket connects locking by Hough folder 5.

Table body 1 bottom is provided with the hole corresponding with collet 2, and the two is connected as a single entity with screw.

Knee pillow 4 comprises: the slide block 15 among Fig. 2, knee pillow location regulating handle 16, rocking arm 17, rocking arm holding screw 18, knee pillow face frame 19, knee pillow face 20.Wherein, rocking arm (17) is fastened relatively by two parts up and down to be formed, and front end is cladding embedding-and-buckling-structured, is fastened on relatively up and down on the described support front rail 6; with to be that hinge axis forms with it hinged, rocking arm (17) rear portion after rocking arm holding screw (18) will fasten fastens as one; 19 on knee pillow face frame be limited at rocking arm 17 about two parts fasten in the formed groove position, knee pillow face 20 is arranged on the knee pillow face frame 19, described knee is rested the head on face 20 and can be made by fabric or leather or plastics or metal material; The radial direction through hole of slide block 15 1 ends axially is enclosed within to be with it in the described knee pillow support 11 and is slidingly matched, and other end screw portion passes the slotted hole of setting on the rocking arm 17 and the internal thread of knee pillow location regulating handle 16 cylindrical end settings screws.Unscrewing described knee pillow location regulating handle 16 holds it and drives slide block 15 and follow knee pillow strut 11 and move axially, the radial component that slide block 15 acts on the slotted hole that arranges on the rocking arm 17 namely promotes knee pillow 4 around 6 rotations of support front rail, thereby change knee pillow face 20 location in space, to regulate the corresponding height of itself and user's knee, distance, after putting in place, adjusting screws knee pillow location regulating handle 16 with rocking arm 17 and the 11 relative lockings of knee pillow strut, namely finish knee and rest the head on presetting of 4 locus, as shown in Figure 6: A is for adapting to leg than the elder position; C is for adapting to leg shorter one position; B is the centre position.

The seat comprises: the Internal Spherical Surface nylon bush 34 among the base plate 21 among the chair leg 8 among 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 is provided with corresponding hole with base plate 21 the two is one with screw attachment; The centre of chair leg 8 horizontal positions 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, the 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 the chair leg 8, two pairs of clips 22 are fastened on respectively on the nylon bush 29 of chair leg 8 above-mentioned both sides symmetric positions relatively, the hole that clip screw 23 passes on the clip 22 screws in the screwed hole that arranges on the base plate 21, locking, making seat 9 is that hinge axis is hinge and connects relatively chair leg 8 horizontal positions and make flip-flop movement with chair leg 8 horizontal positions, as Fig. 7, shown in Figure 8.Drag link 30 is made up of two parts, be fastened on relatively up and down on the nylon bush 29 in the middle of above-mentioned chair leg 8 horizontal positions be that hinge axis is hinge-coupled with it, the drag link after pull bar holding screw 31 will fasten about in the of 30 two parts be connected as one; Stop nut 25 outer surfaces are provided with external screw thread upper end and are provided with flange, from top to bottom pass the through hole of drag link 30 front ends behind the above-mentioned relative fastening, with locking nut 26 stop nut 25 are locked at drag link 30 front ends; Spacing handle 27 screw portions from bottom to top screw in stop nut 25, and rotary stopper handle 27 is adjusted the flip angle that its ends and the distance between the base plate 21 can limit seat 9 relative chair leg 8 horizontal positions.Seat fender 33 is enclosed within drag link 30 tail ends and base plate 21 and forms the support plane of seat with two pin joints of chair leg 8.Lower link 32 two ends respectively with drag link 30, Fig. 1 in draw-bar seat 12 hinge-coupled.End cap 35 among Fig. 4 connects firmly with chair leg 8 ends and connects, Internal Spherical Surface nylon bush 34 is installed in chair leg 8 ends, the hinged bulb 13 of its Internal Spherical Surface and chair leg matches, Internal Spherical Surface back-up ring 36 is held bulb from the cylinder position insertion of the hinged bulb 13 of chair leg from below, elastic spring 37 is installed in the groove that arranges on the end cap 34 and blocks Internal Spherical Surface back-up ring 36, makes chair leg 8 and support be hinge-coupled.

Be fixed bar with the support, chair leg 8, drag link 30, lower link 32 are formed seats for the four-bar mechanism of motion bar together with the seat 9, the base plate 21 that are articulated on the chair leg 8.As shown in Figure 1: turn to behave when two pin joints of base plate 21 and chair leg 8 and seat fender 33 are formed a support plane suitable seat of sitting up straight posture is provided with moving seat 9 behind the gravity center of human body.As shown in Figure 6: turn to behave when a support plane is formed in two pin joints of base plate 21 and chair leg 8 and spacing handle 27 ends the seat of the suitable writing posture of bending over the desk is provided with gravity center of human body's seat 9 that moves forward.As shown in Figure 7: take advantage of a situation and drive the seat and fold back and to vacate segment space and allow student's accessible " standing up " along with shank stretches its posterior leg when the student " stands up ", this moment, chair leg 8 was not more than 90 degree with the angle on ground, when " sitting down " crooked shank along with the student, the seat that is leaning on posterior leg is reinstatement under the gravity effect.As shown in Figure 8: when chair leg 8 is swung angle with ground backward and is spent greater than 90 under the gravity effect seat fold back to draw in and make way for the classroom activity space.

10. hoisting gear for backrest comprises: the backrest lifting nut 14 among Fig. 5, backrest lifting screw 38, square hole packing ring 39, large washer 40, backrest lifting handle 41, handle holding screw 42.Wherein, backrest lifting screw 38 screws in the backrest lifting nut 14 that is welded on the support side lever 3, square hole packing ring 39, large washer 40 orders are enclosed within on the square tenon of backrest lifting screw 38 upper ends setting, backrest 10 among Fig. 1 is enclosed within on the support side lever 3 and is slidingly matched with it, the square tenon that backrest lifting screw 38 upper ends arrange passes through hole and chair back lifting handle 41 joggles that arrange on the backrest 10, and handle holding screw 42 screws in the screw hole of backrest lifting screw 38 ends setting itself and backrest lifting handle 41 are locked.The backrest 10 that 41 drives of rotation backrest lifting handle are limited between large washer 40 and the backrest lifting handle 41 moves up and down to be adjusted to and the only position of user's waist along support side lever 3.

Claims

1. the health care desk and chair that the seat has lag function can be adjusted in a backrest and knee pillow position, comprises support, table body, knee pillow, seat, backrest, and it is characterized in that: described support is the composite assembly structure; Described knee pillow is arranged on its locus, body below and can adjusts and preset; Described seat is by being fixed bar with the support, chair leg (8), drag link (30), lower link (32) constitute together with the base plate (21), the seat (9) that are articulated on the chair leg (8) for the four-bar mechanism that motion bar forms, and described seat is that its flip angle that can overturn is can adjust also can folding back of presetting to draw in; Described backrest is arranged on its upper-lower position of support rear and can adjusts and preset.

2. the health care desk and chair that the seat has lag function can be adjusted in backrest according to claim 1 and knee pillow position, it is characterized in that: described support is to be formed with (5) the fastening connection of Hough folder by support front rail (6), support rear transverse rod (7) and two support side levers (3), and 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 the U-shaped structure, and the end of anterior vertical component is provided with collet (2); The end of posterior vertical part is provided with backrest lifting nut (14); The back segment of horizontal component is provided with the hinged bulb of chair leg (13).

3. can adjust the health care desk and chair that the seat has lag function according to claim 1,2 described backrests and knee pillow position, it is characterized in that: described knee pillow is for piecing together the embedding structure, comprise: slide block (15), knee pillow location regulating handle (16), rocking arm (17), rocking arm holding screw (18), knee pillow face frame (19), knee pillow face (20), wherein: rocking arm (17) is fastened relatively by two parts up and down to be formed, front end is cladding embedding-and-buckling-structured, and rocking arm (17) rear portion after rocking arm holding screw (18) will fasten fastens as one; Knee pillow face frame (19) be arranged on rocking arm (17) up and down two parts fasten in the formed groove position; Knee pillow face (20) is arranged on the knee pillow face frame (19), and described knee pillow face (20) can be made by leather or plastics or timber or metal material, is preferably made by fabric; The radial direction through hole of slide block (15) one ends axially is enclosed within to be with it on the described knee pillow strut (11) and is slidingly matched, and other end screw portion passes rocking arm (17) and goes up the internal thread of the slotted hole that arranges and location regulating handle (16) the cylindrical end setting of knee pillow and screw to constitute and adjust the device that presets the locus that knee rests the head on.

4. can adjust the health care desk and chair that the seat has lag function according to claim 1,2,3 described backrests and knee pillow position, it is characterized in that: the upper and lower two parts of rocking arm (17) in the described knee pillow be fastened on relatively described support front rail (6) go up be that hinge axis is the hinge connection with it.

5. according to claim 1, the health care desk and chair that the seat has lag function can be adjusted in 2 described backrests and knee pillow position, 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 fastened on relatively on the chair leg (8), two pairs of clips (22) are fastened on respectively on the nylon bush (29) of chair leg (8) horizontal position both sides symmetric position relatively, and seat (9) chair leg (8) horizontal position is relatively made flip-flop movement.

6. can adjust the health care desk and chair that the seat has lag function according to claim 1,2,5 described backrests and knee pillow position, it is characterized in that: described drag link (30) is made up of two parts, the nylon bush (29) that is fastened on described chair leg (8) horizontal position centre position up and down relatively go up be that hinge axis is hinge-coupled with it; 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 stopper handle (27) can be adjusted the flip angle that distance between its end and the base plate (21) limits seat (9) relative chair legs (8) horizontal position.

7. can adjust the health care desk and chair that the seat has lag function according to claim 1,2,5,6 described backrests and knee pillow position, it is characterized in that: described lower link (32) two ends respectively with drag link (30), draw-bar seat (12) hinge-coupled; Inside and outside Internal Spherical Surface nylon bush (34), the end cap (35) of being respectively arranged with of described chair leg (8) end; 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); End cap (35) is gone up in the groove that arranges and is provided with elastic spring (37).

8. can adjust the health care desk and chair that the seat has lag function according to claim 1,2,5,6,7 described backrests and knee pillow position, it is characterized in that: two pin joints and the seat fender (33) of described base plate (21) and chair leg (8) can be formed the support plane that a suitable people sits up straight posture; The bend over the desk support plane of writing posture of a suitable people can be formed in two pin joints of described base plate (21) and chair leg 8 and spacing handle (27) end.

9. can adjust the health care desk and chair that the seat has lag function according to claim 1,2,5,6,7,8 described backrests and knee pillow position, it is characterized in that: described seat is rocked to when spending less than 90 with the ground angle backward at chair leg (8) can reinstatement under the gravity effect, can be folding rounding state when spending greater than 90 under the gravity effect.

10. can adjust the health care desk and chair that the seat has lag function according to claim 1,2, described backrest and knee pillow position, it is characterized in that: the easy on and off degree of described backrest is limited in backrest lifting handle (41) and backrest lifting screw (38) is gone up between the stopping means that arranges, and rotation backrest lifting handle (41) can drive backrest and move up and down the position along support side lever (3).