CN104771002B - Multi-purpose computer chair backrest adjusting mechanism - Google Patents

Abstract

The invention provides a kind of multi-purpose computer chair backrest adjusting mechanism, including：Rotating base, backup plate, handrail, plate of stretching one's legs, pedal and hydraulic system, the backrest and seat board be hinged can 90 ° it is any rotate and position, having thereon on supporting leg, supporting leg has arc support rod.The multi-purpose computer chair backrest adjusting mechanism of the present invention, which can be realized, to lie low, semi-lying, the various states such as sits up straight, and regulation process is simple and convenient, meets the various sitting posture requirements of user.

Description

Multi-purpose computer chair backrest adjusting mechanism

Technical field

The invention belongs to field of office furniture, office healthcare product is especially belonged to, specifically a kind of Multifunctional computer chair is leaned on Carry on the back governor motion.

Background technology

Sitting traditional office chair office meeting before computer causes a variety of diseases, such as, cervical spondylopathy, and the root of cervical spondylopathy is neck After interverbebral disc regression denaturation, interverbebral disc loosens, then pressuring neural root, spinal cord or various symptoms caused by vertebral artery.For a long time Bad sitting posture is rested on before computer for a long time, is easiest to cause the fatigue of neck flesh, is caused neck and shoulder ache, item muscle spasmus, even Have a dizzy spell；In the course of time, certainly will prematurely occur degeneration of cervical intervertebral disc after adult, cause cervical spondylopathy；Waist Vertebra disease, due to long-term sitting, or the sitting posture having is bad, or always fix a posture and so that lumbar soft tissue is in for a long time Tension state, soft tissue ischemic, and produce lumbar muscle strain；Coccyx is injured, and the symptom of coccyx pain includes having near buttocks coccyx Tender point or skelagia phenomenon, scope include soft tissue of coccyx, levator ani and surrounding etc..Permanent abnormal sitting posture really, oppresses coccyx Nerve, you can cause coccyx injured and pain；It is new old to complete it that hundreds of millions cells in DOMS, human body will lean on the transport of blood Metabolic function, sitting can reduce internal oxygen carrying blood flow volume, decrease in oxygen partial pressure and take carbon dioxide blood flow volume and increase, carbon dioxide Partial pressure is raised, and causes DOMS, stiff, atrophy.

Existing office chair can also adjust the position of backrest, but backrest inclination can only all be made user by major part It is few backrest regulation to be arrived bed flat position in semi-lying position.

The content of the invention

For technical problem present in prior art, machine is adjusted the invention provides a kind of multi-purpose computer chair back Structure, including：Rotating base, backrest, handrail, plate of stretching one's legs, pedal and hydraulic system, the backrest is hinged with seat board can be 90 ° Meaning is rotated and positioned, and having thereon on supporting leg, supporting leg has arc support rod.

Further, in addition to angle adjustment rule, angle adjustment rule the backrest and seat board are hinged on by middle part pole Hinge on, simultaneously have chute, can seat board rear end column ledge slide.

Further, sitting up straight or during half state of couching, the angle adjustment advises the support of one end bayonet lock and hole and supporting leg Boom end is hinged；In lying status, it is separated with strut by rotating bayonet lock, and cut with scissors by latch and curved support club head Chain is hinged.

Further, there is arc-shaped limit ratchet the angle adjustment rule inside, and itself and the click-fit on seat board column are real Now position, backrest handle is articulated with angle adjustment rule shell, its cam type end controls the separating action of spacing ratchet and ratchet, During backrest handle return, elastic ring makes arc-shaped limit ratchet be engaged with ratchet.

The multi-purpose computer chair backrest adjusting mechanism of the present invention, which can be realized, to lie low, semi-lying, the various states such as sits up straight, and adjusts Section process is simple and convenient, meets the various sitting posture requirements of user.

Brief description of the drawings

Fig. 1 is the structural representation of Multifunctional computer chair；

Fig. 2 is hydraulic schematic；

Fig. 3 is to sit up straight view；

Fig. 4 is the multi-purpose computer chair back adjustment mechanism schematic diagram of the present invention；

Fig. 5 is backrest adjustment mechanism collapsed state schematic diagram；

Fig. 6 is that oil cylinder holds up lever and expansion link schematic diagram.

Embodiment

The invention will be further described below in conjunction with the accompanying drawings.

As shown in figures 1 to 6, the multi-purpose chair of prevention and treatment computer office disease of the invention, with sit up straight office, Couch rest, traction stretch function.Concrete structure includes：Rotating base 1, backrest 2, handrail 3, plate 4 of stretching one's legs, pedal 5 and liquid Pressure system.

Hydraulic system includes manual hydraulic oil pump 6, flow divider 7, and manual hydraulic oil pump 6 passes through fluid pressure line and flow divider 7 Connection, flow divider 7 drives oil cylinder 9 and headrest hydraulic-driven with raise-lower hydraulic device 8, plate of stretching one's legs respectively by many fluid pressure lines Oil cylinder 10 is connected.

The rotating base 1 includes raise-lower hydraulic device 8, universal wheel 11 and seat board 12；Seat board 12 is filled located at raise-lower hydraulic Put 8 top, the seat board back side provided with manual hydraulic oil pump 6, plate of stretching one's legs driving oil cylinder 9, plate 4 of stretching one's legs located at stretch one's legs plate driving On the piston of oil cylinder 9, the lower section of plate of stretching one's legs driving oil cylinder 9 is provided with oil cylinder bracket 13, and oil cylinder holds up lever 14 and is located at oil cylinder bracket 13 Lower section, oil cylinder holds up the one end of lever 14 and is connected in oil cylinder bracket 13 by hinge, and oil cylinder holds up the middle part of lever 14 and is connected in by hinge Seat board 12, when backrest is in horizontality, by bracket leverage, the plate 4 that can make to stretch one's legs is lifted up making itself and seat board 12 In same plane.Pedal 5 is connected by expansion link 15 with plate 4 of stretching one's legs, and expansion link 15 can be folded by hinge.

The backrest 2 and seat board 12 be hinged can 90 ° it is any rotate and position, having thereon on supporting leg 16, supporting leg 16 has arc Support bar 17, flow divider 7, which is located on the rear of backrest 2, flow divider 7, various switches, to control raise-lower hydraulic device 8, to stretch one's legs Plate drives oil cylinder 9 and headrest hydraulic driving oil cylinder 10 to act；Having after backrest on headrest hydraulic driving oil cylinder 10, headrest has cervical vertebra to lead Lead device 18 and lumbar tractor 19, in the case where headrest hydraulic driving oil cylinder 10 drives with headrest one motion.It is high in the oxter of backrest Degree, stomach height, hip height are flexible banding band（Not shown in figure）Tightened during drawing on the different parts of body, backrest Provided with flexible banding band location division 20.

Angle adjustment rule 21 are hinged on the backrest 2 with the hinge of seat board 12, simultaneously there is chute by middle part pole 22, It can slide, sit up straight or during half state of couching in the ledge of seat board rear end column, one end is with lock mechanism (bayonet lock 23+ holes) It is hinged with the end of strut 24 of supporting leg；In lying status, it is separated with strut 24 by rotating bayonet lock 23, and with latch with The head hinge of arc support rod 17 is hinged, and has arc-shaped limit ratchet 25 inside angle adjustment rule 21, itself and the spine on seat board column Pawl 26, which coordinates, realizes positioning, and backrest handle 27 is articulated with angle adjustment rule shell, and its cam type end controls spacing ratchet and spine The separating action of pawl, during handle return, elastic ring 28 makes arc-shaped limit ratchet 25 be engaged with ratchet 26.

Plate 4 of stretching one's legs is driven by plate driving oil cylinder 9 of stretching one's legs, and pedal 5 is by the expansion link realization tiling with active section or certainly By the state of hanging.

When sitting up straight or during any angle semi-lying state, supporting leg 16 is parallel with backrest 2 all the time.Only when backrest 2 is fully horizontal When, just supporting leg 16 is moved to backrest 2 in vertical state.Now, hand rotates rotation bayonet lock 23, it is advised 21 points with angle adjustment Open.

Claims (2)

1. a kind of multi-purpose computer chair backrest adjusting mechanism, including：Rotating base（1）, backrest（2）, handrail（3）, plate of stretching one's legs （4）, pedal（5）And hydraulic system, it is characterised in that：The backrest（2）With seat board（12）Be hinged can 90 ° any rotate and fixed , there is supporting leg position thereon（16）, supporting leg（16）On have arc support rod（17）；Also include angle adjustment to advise（21）, angle adjustment rule （21）Pass through middle part pole（22）It is hinged on the backrest（2）With seat board（12）Hinge on, simultaneously have chute, can be after seat board The ledge of column is held to slide；Sitting up straight or during half state of couching, the angle adjustment rule（21）One end bayonet lock（23）With Hole and the strut of supporting leg（24）End is hinged；In lying status, by rotating bayonet lock（23）Make itself and strut（24）Separation, and By latch and arc support rod（17）Head hinge is hinged.

2. Multifunctional computer chair chair backrest adjusting mechanism as claimed in claim 1, it is characterised in that：The angle adjustment rule （21）There is arc-shaped limit ratchet inside（25）, itself and the ratchet on seat board column（26）Coordinate and realize positioning, backrest handle（27） Angle adjustment rule shell is articulated with, its cam type end controls the separating action of spacing ratchet and ratchet, backrest handle（27）Hand During handle return, elastic ring（28）Make arc-shaped limit ratchet（25）With ratchet（26）Engagement.