CN110367726A - A kind of sleep seat for alleviating vertebra discomfort - Google Patents

Abstract

The invention discloses a kind of sleep seats for alleviating vertebra discomfort, it includes pedestal, seat, backrest and handrail, seat is fixedly installed on pedestal, backrest includes backrest body, backrest body top is embedded with neckpillow, backrest lower part is embedded with waist pillow, backrest two sides are fixed with backrest supporting structure, in the waist pillow insertion backrest body and waist pillow top and backrest body are formed and are rotatablely connected, shaft is installed between the backrest supporting structure of backrest two sides, eccentric cam is fixedly installed in shaft, the curved surface of eccentric cam is connected to the waist napex back side, the two sides of eccentric cam are respectively equipped with one-directional rotation positioning mechanism.Sleep seat of the invention is equipped with waist pillow and can be supported to patient's waist, and the support inclination angle of waist pillow can be adjusted according to comfortable situation in patient, to have the function that mitigate lumbar pain, facilitates patient falls asleep's rest.

Description

A kind of sleep seat for alleviating vertebra discomfort

Technical field

The invention belongs to the field of medical instrument technology, especially a kind of sleep seat for alleviating vertebra discomfort.

Background technique

Recognize from modern medicine study, the backbone of human body, is straight line in terms of front；But from the side, it is seen that Four neck, chest, waist, sacrum physiological bendings.Under normal circumstances, 4 bendings of backbone are cervical lordosis, thoracic kyphosis, lumbar vertebrae It is convex after lordosis and sacral.If long-term posture just can not make backbone with certain diseases (such as moist rachitis of tuberculosis of thoracic vertebra, class) Gryposis is formed, spondylodynia is caused, it is especially relatively conventional with cervical spondylosis, lumbar vertebra disease.Cervical spondylosis shows as neck and shoulder pain, head more Bitterly, dizziness etc..And lumbar vertebra disease then often shows as lumbosacral region and aches, even involves and cause lower limb pain, cannot uprightly wait, serious person It may result in paralysis, adverse effect caused to patients ' life quality.For the people with lumbar vertebra disease, due to lumbosacral region acid Pain or lower limb pain, seriously affect sleep quality, for example, in bed, simply go to bed and lie down or sit up movement of leaving the bed, all possibility Muscle is pullled, lumbar vertebrae is caused further to deteriorate, moreover, when lying down, since lumbar curvature has occurred and that variation, if waist does not have Situations such as having good support, will also result in lumbar vertebrae and continue pain deterioration, or even cause crural paralysis powerless.

Summary of the invention

For overcome the deficiencies in the prior art, the present invention provides a kind of sleep seat for alleviating vertebra discomfort, the sleeps Seat is equipped with waist pillow and can be supported to patient's waist, and the branch of waist pillow can be adjusted according to comfortable situation in patient Inclination angle is supportted, to have the function that mitigate lumbar pain.

To achieve the goals above, the technical solution adopted by the present invention is that: it is a kind of alleviate vertebra discomfort sleep seat, wrap Pedestal, seat, backrest and handrail are included, seat is fixedly installed on pedestal, it is characterised in that: backrest includes backrest body, backrest Body upper part is embedded with neckpillow, and backrest lower part is embedded with waist pillow, and backrest two sides are fixed with backrest supporting structure, the waist pillow insertion In backrest body and waist pillow top and backrest body are formed and are rotatablely connected, and are equipped with and are turned between the backrest supporting structure of backrest two sides Axis, eccentric cam is fixedly installed in shaft, and the curved surface of eccentric cam is connected to the waist napex back side, the two sides point of eccentric cam Positioning mechanism She You not be one-directionally rotated, one-directional rotation positioning mechanism includes locating wheel and forms rotational positioning cooperation with locating wheel Positioning shake piece, locating wheel is installed in shaft and is formed between shaft unidirectional rotation-limited matching relationship, and positioning is shaken piece and turned Dynamic to be installed in fixed plate, fixed plate is socketed in shaft, and positioning, which is shaken, is equipped with elastic component between piece and fixed plate, the elastic component With may make positioning to shake the elastic potential energy trend power that piece is extruded in locating wheel, locating wheel circumferential surface is equipped with the positioning being spaced apart Tooth, forms between positioning tooth and positioning tooth and the locating slot that piece cooperates is shaken in positioning, and locating slot is open towards turn with locating wheel Dynamic direction is consistent, and the positioning end that piece is shaken in positioning is equipped with drawstring, and the free end of drawstring is behind handrail inner passage before handrail Operating side is stretched out in end lower section.

In above structure, handrail is mounted on seat two sides, may be a fixed connection between seat or pedestal and backrest, can also To be rotation connection, it is referred to massage chair in the prior art, above structure makes improvement mainly for back part Design, backrest body upper and lower part open up groove with human cervical spine, lumbar vertebrae corresponding position respectively, for neckpillow and waist pillow insertion In respective groove, especially, waist rests the head on top and backrest body is formed and is rotatablely connected, and then installs in the groove of backrest body lower part One-directional rotation positioning mechanism and eccentric cam drive the waist napex inwardly or outwardly to rotate, to adjust the angle of waist pillow Degree is come the person of being used cooperatively, and in no external force, positioning shakes piece under elastic component such as the isostructural effect of elastic slice, spring, It can be extruded in locating slot and locating wheel is prevented to drive eccentric cam rotation, that is, reach locating effect, when needing to adjust the angle, then By pulling drawstring that the positioning end pull-up that piece is shaken in positioning is disengaged it from locating slot, after user adjusts suitable angle, Drawstring is unclamped again, allows positioning to shake piece and locating wheel is positioned.

Further, described to position the rear portion for shaking piece by articulated shaft rotational installation in fixed plate, it positions before shaking piece Portion is equipped with short axle, and short axle both ends are connected through quarter butt respectively, and two quarter butts respectively deviate from solid by cross bar between the end of short axle It is fixed to connect, it is also equipped with upper connecting rod respectively in cross bar both side ends, torsional spring is installed on cross bar, torsional spring constitutes the elasticity Part, two upper connecting rods are fixedly installed on hinged seat, and hinged seat is assemblied in fixed plate top, one end installation of the drawstring In in short axle outboard end.

In above structure, the rear end that piece is shaken in positioning is articulated in fixed plate, and short axle has then been crossed in the front end that piece is shaken in positioning, short Axis both ends are separately connected two quarter butts, and two upper connecting rods can be rotated around cross bar, and torsional spring then has pushing to quarter butt and cross bar Trend power.

Further, the handrail inner hollow, hollow cavity wall are equipped with guide post, and drawstring is held on guide post, hollow cavity Upper wall is equipped with inverted U-shaped cavity, and the opening of U-shaped cavity is equipped with reset spring towards drawstring in U-shaped cavity, and reset spring is towards drawing One end of rope is equipped with press piece, and press piece is equipped with the press end of protrusion towards one end of drawstring, and hollow cavity lower wall is equipped with and opens Mouthful, pressing handle is installed in opening, presses and pressing handle reset spring is installed between handle and hollow cavity, press handle court Be equipped with to the end face of drawstring and squeeze end with the corresponding handle in press end, handle squeeze end and press piece press end it Between there are the channel passed through for drawstring, the open end of U-shaped cavity, which is additionally provided with, can prevent the limit baffle that falls off of press piece, limiting block Piece there are for drawstring partially into the notch in U-shaped cavity.

In above structure, drawstring is installed in handrail, and guide post is arranged in handrail hollow cavity and shelves for drawstring, draws convenient for drawstring It is dynamic, roller can also be set on guide post and be more advantageous to drawstring pulling, the U-shaped cavity of hollow cavity upper wall can be spaced apart, and be located at and drawn It restricts upper end, the reset spring in U-shaped cavity is extruded in press on piece and the press end for pressing on piece is made to stretch out U-shaped cavity upper limit gear Except the notch of piece, towards drawstring, pressing handle is then installed in the opening of hollow cavity lower wall, pressing handle can on move down Dynamic, the both ends for pressing handle are realized by the cooperation of connecting column and elongated slot, and realize pressing handle by handle reset spring It resets, pressing handle is located at the part in hollow cavity and is then equipped with handle extruding end, and handle squeezes end and presses the press of piece End is corresponding up and down and there are the channels for stretching through between the two, herein i.e. by operating pressing handle for drawstring part It is embedded in U-shaped cavity, so that the front end that piece is shaken in positioning is pulled up, i.e., replaces pulling drawstring from handrail front end using operation pressing handle Mode, the operation is more labor-saving.

Further, the locating wheel include the ring gear being socketed in shaft, the outer gear ring that is socketed on ring gear, institute It states positioning tooth to be arranged in outer gear ring, ring gear and outer gear ring positioning synchronous move, and the inner ring face of ring gear is equipped with limiting tooth, limit Limiting slot is formed between position tooth and limiting tooth, position-limited claw is fixedly installed in shaft, position-limited claw and limiting slot limit cooperate, limit The opening of slot is opposite towards left and right with the opening of locating slot.

In above structure, piece cooperation is shaken in the outer gear ring of locating wheel and positioning, the ring gear of locating wheel then with the limit in shaft Position pawl cooperates so that locating wheel can only rotate in one direction, and ring gear and outer gear ring then move synchronously pass by locating piece formation System, positioning are shaken piece and are then mounted on outer gear ring one-directional rotation path for positioning, and position-limited claw is then mounted in ring gear reverse side It plays upwards and prevents its counter motion.

Using the above scheme, the waist pillow in the present invention plays the role of adjustable support angle, and vertebra can be effectively relieved Uncomfortable crowd, especially lumbar vertebrae discomfort crowd, the seat can improve design to backrest on the basis of massage armchair, can be with More comfortable, the present invention can be uncomfortable for vertebra, and can not fall asleep or sleep has the crowd of obstacle, and ridge will not be aggravated by providing one Vertebra lesion and the sleep tool that can replace bed.

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

Detailed description of the invention

Attached drawing 1 is specific embodiment of the invention appearance assumption diagram；

Attached drawing 2 is specific embodiment of the invention structural front view；

Attached drawing 3 is specific embodiment of the invention A-A structure sectional view, illustrates locating wheel and positions the bindiny mechanism shaken between piece Schematic diagram；

Attached drawing 4 is specific embodiment of the invention locating wheel, positions the mounting structure schematic diagram for shaking piece and eccentric wheel；

Attached drawing 5 is specific embodiment of the invention B-B structure sectional view, illustrates the mounting structure signal of handrail hollow cavity medium pulling rope Figure, and illustrate drawstring and position the connection structure shaken between piece, locating wheel；

Attached drawing 6 is specific embodiment of the invention C-C structure sectional view, illustrates the connection structure between waist pillow and eccentric cam；

Attached drawing 7 is the enlarged drawing of specific embodiment of the invention locating wheel sectional structure；

Attached drawing 8 is the enlarged drawing of the mounting structure of specific embodiment of the invention handrail hollow cavity medium pulling rope；

Pedestal 1, seat 2, backrest 3, backrest body 31, backrest supporting structure 32, handrail 4, neckpillow 5, waist pillow 6,

Shaft 61, eccentric cam 62, curved surface 621, locating wheel 7, outer gear ring 71, ring gear 72, limiting tooth 721, limiting slot 722, Position-limited claw 723, positioning tooth 711, locating slot 712, piece 73 is shaken in positioning, the front 731 of piece 73 is shaken in positioning, quarter butt 732, cross bar 733, Upper connecting rod 734, torsional spring 735, hinged seat 736, fixed plate 737, drawstring 8

Hollow cavity 41, guide post 42, U-shaped cavity 43, reset spring 44, press piece 45, limit baffle 46, notch 461, press end 451, handle 47, connecting column 471, elongated slot 472, handle reset spring 473, handle are pressed and squeezes end 474.

Specific embodiment

The present invention is not limited to following detailed description, and persons skilled in the art are disclosed interior according to the present invention Hold, can be implemented using other a variety of specific embodiments of the invention or all using design structure and think of of the invention Road does simple change or change, both falls within protection scope of the present invention.It should be noted that in the absence of conflict, this The feature in embodiment and embodiment in invention can be combined with each other.

In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower", The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description of the present invention and simplification of the description, rather than instruction or dark Show that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as pair Limitation of the invention.In addition, term " first ", " second " etc. are used for description purposes only, it is not understood to indicate or imply phase To importance or implicitly indicate the quantity of indicated technical characteristic.The feature for defining " first ", " second " etc. as a result, can To explicitly or implicitly include one or more of the features.In the description of the present invention, unless otherwise indicated, " more It is a " it is meant that two or more.

In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally connect It connects；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary, It can be the connection inside two elements.For the ordinary skill in the art, on being understood by concrete condition State the concrete meaning of term in the present invention.

Specific embodiments of the present invention are the sleep seat for alleviating vertebra discomfort as shown in figures 1-8 comprising pedestal 1, chair Face 2, backrest 3 and handrail 4, seat 2 are fixedly installed on pedestal 1, and handrail 4 is mounted on 2 two sides of seat, seat 2 or pedestal 1 and leans on It may be a fixed connection between back 3, be also possible to be rotatablely connected, be referred to massage chair in the prior art, the present invention Make Curve guide impeller mainly for 3 part of backrest, 31 upper and lower part of backrest body respectively with human cervical spine, lumbar vertebrae corresponding position Groove is opened up, in the 6 respective groove of insertion of neckpillow 5 and waist pillow, especially, waist rests the head on 6 tops and backrest body 31 forms and turns It is dynamic to connect, one-directional rotation positioning mechanism and eccentric cam 62 are mounted in the groove of 31 lower part of backrest body then to drive waist to rest the head on 6 Lower part inwardly or outwardly rotates, to adjust the angle of waist pillow 6 come the person of being used cooperatively.

Specifically, the backrest 3 includes backrest body 31,31 top of backrest body is embedded with neckpillow 5, the insertion of 3 lower part of backrest There is waist to rest the head on 6,3 two sides of backrest are fixed with backrest supporting structure 32, and waist pillow 6 is embedded in backrest body 31 and waist rests the head on 6 tops and backrest Ontology 31 forms rotation connection, is equipped with shaft 61 between the backrest supporting structure 32 of 3 two sides of backrest, is fixedly mounted in shaft 61 There is eccentric cam 62, the curved surface 621 of eccentric cam 62 is connected to waist and rests the head on 6 lower backs, and the two sides of eccentric cam 62 are respectively equipped with Positioning mechanism is one-directionally rotated, one-directional rotation positioning mechanism includes locating wheel 7 and forms determining for rotational positioning cooperation with locating wheel 7 Piece 73 is shaken in position, and locating wheel 7 is installed in shaft 61 and is formed between shaft 61 unidirectional rotation-limited matching relationship, and piece is shaken in positioning In in fixed plate 737, fixed plate 737 is socketed in shaft 61 for 73 rotational installations, and positioning is shaken installs between piece 73 and fixed plate 737 Flexible part, which, which has, may make positioning to shake the elastic potential energy trend power that piece 73 is extruded in locating wheel 7, locating wheel 7 Circumferential surface is equipped with the positioning tooth 711 being spaced apart, and is formed between positioning tooth 711 and positioning tooth 711 and shakes determining for the cooperation of piece 73 with positioning The opening direction of position slot 712, locating slot 712 is consistent with the rotation direction of locating wheel 7, and the positioning end that piece 73 is shaken in positioning is equipped with drawing Operating side is stretched out after passing through 4 inner passage of handrail in rope 8, the free end of drawstring 8 below 4 front end of handrail.In no external force feelings Under condition, positioning shakes piece 73 under elastic component such as the isostructural effect of elastic slice, spring, can be extruded in locating slot 712 and prevent positioning Wheel 7 drives eccentric cam 62 to rotate, that is, reaches locating effect, when needing to adjust the angle, then by pulling drawstring 8 to shake positioning The positioning end pull-up of piece 73 disengages it from locating slot 712, after user adjusts suitable angle, unclamps again drawstring 8, and it is fixed to allow It shakes piece 73 and locating wheel 7 is positioned in position.

Above-mentioned locating wheel 7 includes the ring gear 72 being socketed in shaft 61, the outer gear ring 71 being socketed on ring gear 72, is determined Position tooth 711 is arranged in outer gear ring 71, and ring gear 72 and 71 positioning synchronous of outer gear ring move, and the inner ring face of ring gear 72 is equipped with limit Position tooth 721 forms limiting slot 722, is fixedly installed with position-limited claw 723 in shaft 61, limits between limiting tooth 721 and limiting tooth 721 Position pawl 723 and the limit of limiting slot 722 cooperate, and the opening of limiting slot 722 is opposite towards left and right with the opening of locating slot 712.Positioning The cooperation of piece 73 is shaken in the outer gear ring 71 of wheel 7 and positioning, and the ring gear 72 of locating wheel 7 then makes with the cooperation of position-limited claw 723 in shaft 61 Obtaining locating wheel 7 can only rotate in one direction, and ring gear 72 and outer gear ring 71 then move synchronously relationship by locating piece formation, fixed Position is shaken piece 73 and is then mounted on the one-directional rotation of outer gear ring 71 path for positioning, and it is inverse that position-limited claw 723 is then mounted in ring gear 72 Turn to play on direction and prevents its counter motion.

The rear portion that piece 73 is shaken in above-mentioned positioning is rotatablely installed by articulated shaft in fixed plate 737, and the front of piece 73 is shaken in positioning 731 are equipped with short axle, and short axle both ends are connected through quarter butt 732 respectively, and two quarter butts 732 respectively pass through between the end of short axle Cross bar 733 is fixedly connected, and is also equipped with upper connecting rod 734 in 733 both side ends of cross bar respectively, is equipped with torsional spring on cross bar 733 735, torsional spring 735 constitutes elastic component, and torsional spring 735 then has the tendency that pushing power, two upper connections to quarter butt 732 and cross bar 733 Bar 734 is fixedly installed on hinged seat 736, and hinged seat 736 is assemblied in 737 top of fixed plate, and one end of drawstring 8 is installed on short In axis outboard end, when drawstring 8 pulls positioning to shake 73 front end of piece tilting disengaging locating slot 712,73 front end of piece is shaken with positioning and is connect Two quarter butts 732 and cross bar 733, then can rotate between upper connecting rod 734, after drawstring 8 cancels external force, then cross bar Cross bar 733 can be allowed to reset for torsional spring 735 on 733 so that positioning shakes piece 73 again in another locating slot 712 of jacking, forms positioning Structure.

Pulling for above-mentioned drawstring 8 can also be realized in such a way that operation presses handle 47.Specifically, drawstring 8 is installed In hollow cavity 41 inside handrail 4, guide post 42 is set in hollow cavity 41 and is shelved for drawstring 8, is pulled convenient for drawstring 8, guide post Roller can also be set on 42 and be more advantageous to the pulling of drawstring 8,41 upper wall of hollow cavity can be equipped with inverted U-shaped cavity 43, U-shaped cavity 43 Opening towards drawstring 8, U-shaped cavity 43 can be spaced apart, and be located at 8 upper end of drawstring, be equipped with reset spring in U-shaped cavity 43 44, one end of reset spring 44 towards drawstring 8 is equipped with press piece 45, and the open end of U-shaped cavity 43, which is additionally provided with, can prevent press piece The 45 limit baffles 46 to fall off, there are, partially into the notch 461 in U-shaped cavity 43, press piece 45 for drawstring 8 for limit baffle 46 The press end 451 of protrusion is equipped with towards one end of drawstring 8, the reset spring 44 in U-shaped cavity 43, which is extruded on press piece 45, to be made The press end 451 that must be pressed on piece 45 is stretched out except the notch 461 of 43 upper limit baffle 46 of U-shaped cavity, towards drawstring 8.It is hollow 41 lower wall of chamber is then equipped with opening, and pressing handle 47 is equipped in opening, and pressing handle 47 can move up and down, pressing handle 47 Both ends are realized by the cooperation of connecting column 471 and elongated slot 472, and realize answering for pressing handle 47 by handle reset spring 473 Position.Pressing handle 47 is located at the part in hollow cavity 41 and is then equipped with handle extruding end 474, and handle squeezes end 474 and press About the 451 press end of piece 45 is corresponding and between the two there are the channel for stretching through, and handle squeezes end 474 and top The press end 451 of tabletting 45 can be split settings, preferably be integrally disposed upon on pressing handle 47.It is pressed here by operation It presses handle 47 by 8 locally embedding U-shaped cavity 43 of drawstring, so that the front end that piece 73 is shaken in positioning is pulled up, i.e., hand is pressed using operation Handle 47 replaces the mode that drawstring 8 is pulled from 4 front end of handrail, and the operation is more labor-saving.

Claims (5)

1. a kind of sleep seat for alleviating vertebra discomfort, including pedestal, seat, backrest and handrail, seat are fixedly installed in pedestal On, it is characterised in that: backrest includes backrest body, and backrest body top is embedded with neckpillow, and backrest lower part is embedded with waist pillow, backrest Two sides are fixed with backrest supporting structure, and the waist pillow is embedded in backrest body and waist pillow top and backrest body form rotation company It connects, shaft is installed between the backrest supporting structure of backrest two sides, eccentric cam, the song of eccentric cam are fixedly installed in shaft Face is connected to the waist napex back side, and the two sides of eccentric cam are respectively equipped with one-directional rotation positioning mechanism, one-directionally rotates positioning mechanism Shake piece including locating wheel and the positioning for forming rotational positioning cooperation with locating wheel, locating wheel be installed in shaft and with shaft it Between form unidirectional rotation-limited matching relationship, positioning shakes piece rotational installation in fixed plate, and fixed plate is socketed in shaft, positioning It shakes and elastic component is installed between piece and fixed plate, which, which has, may make positioning to shake the elastic potential that piece is extruded in locating wheel Energy trend power, locating wheel circumferential surface are equipped with the positioning tooth being spaced apart, and are formed between positioning tooth and positioning tooth and shake piece cooperation with positioning Locating slot, towards consistent with the rotation direction of locating wheel, the positioning end that piece is shaken in positioning is equipped with drawstring, draws for the opening of locating slot Operating side is stretched out after passing through handrail inner passage in the free end of rope below handrail front end.

2. the sleep seat according to claim 1 for alleviating vertebra discomfort, it is characterised in that: described to position the rear portion for shaking piece By articulated shaft rotational installation in fixed plate, the front that piece is shaken in positioning is equipped with short axle, and short axle both ends are connected through quarter butt respectively, Two quarter butts respectively deviate between the end of short axle to be fixedly connected by cross bar, the also company of being equipped with respectively in cross bar both side ends Extension bar is equipped with torsional spring on cross bar, and torsional spring constitutes the elastic component, and two upper connecting rods are fixedly installed on hinged seat, cuts with scissors Joint chair is assemblied in fixed plate top, and one end of the drawstring is installed in short axle outboard end.

3. the sleep seat according to claim 1 or 2 for alleviating vertebra discomfort, it is characterised in that: in the handrail inside Sky, hollow cavity wall are equipped with guide post, and drawstring is held on guide post, and hollow cavity upper wall is equipped with inverted U-shaped cavity, the opening of U-shaped cavity Towards drawstring, reset spring is installed in U-shaped cavity, one end of reset spring towards drawstring is equipped with press piece, presses piece direction One end of drawstring is equipped with the press end of protrusion, and hollow cavity lower wall is equipped with opening, pressing handle is equipped in opening, presses handle Pressing handle reset spring is installed between hollow cavity, pressing handle is equipped with corresponding with press end towards the end face of drawstring Handle squeezes end, and handle squeezes between end and the press end for pressing piece there are the channel passed through for drawstring, U-shaped cavity Open end, which is additionally provided with, can prevent the limit baffle that falls off of press piece, limit baffle there are for drawstring partially into U-shaped cavity Notch.

4. the sleep seat according to claim 1 or 2 for alleviating vertebra discomfort, it is characterised in that: the locating wheel includes The ring gear being socketed in shaft, the outer gear ring being socketed on ring gear, the positioning tooth are arranged in outer gear ring, ring gear with The inner ring face of the movement of outer gear ring positioning synchronous, ring gear is equipped with limiting tooth, and limiting slot, shaft are formed between limiting tooth and limiting tooth On be fixedly installed with position-limited claw, position-limited claw and limiting slot limit cooperate, and the opening of opening of limiting slot and locating slot is towards left and right On the contrary.

5. the sleep seat according to claim 3 for alleviating vertebra discomfort, it is characterised in that: the locating wheel includes socket In the ring gear in shaft, the outer gear ring that is socketed on ring gear, the positioning tooth is arranged in outer gear ring, ring gear and external tooth Bit synchronization movement is drawn a circle to approve, the inner ring face of ring gear is equipped with limiting tooth, forms limiting slot between limiting tooth and limiting tooth, consolidates in shaft Dingan County is equipped with position-limited claw, and position-limited claw and limiting slot limit cooperate, and the opening of limiting slot is opposite towards left and right with the opening of locating slot.