CN111466740A - Posture-correcting and vision-correcting learning chair - Google Patents

Posture-correcting and vision-correcting learning chair Download PDF

Info

Publication number
CN111466740A
CN111466740A CN202010297611.2A CN202010297611A CN111466740A CN 111466740 A CN111466740 A CN 111466740A CN 202010297611 A CN202010297611 A CN 202010297611A CN 111466740 A CN111466740 A CN 111466740A
Authority
CN
China
Prior art keywords
chair
cushion
fixed
seat
connecting piece
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010297611.2A
Other languages
Chinese (zh)
Inventor
温辉
董育伟
杨勇
石奇敏
张巳如
何峰
李春波
吴彦农
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huaiyin Institute of Technology
Original Assignee
Huaiyin Institute of Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huaiyin Institute of Technology filed Critical Huaiyin Institute of Technology
Priority to CN202010297611.2A priority Critical patent/CN111466740A/en
Publication of CN111466740A publication Critical patent/CN111466740A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C7/00Parts, details, or accessories of chairs or stools
    • A47C7/02Seat parts
    • A47C7/14Seat parts of adjustable shape; elastically mounted ; adaptable to a user contour or ergonomic seating positions
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C3/00Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
    • A47C3/18Chairs or stools with rotatable seat
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C3/00Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
    • A47C3/20Chairs or stools with vertically-adjustable seats
    • A47C3/34Chairs or stools with vertically-adjustable seats with pins coacting with holes or bolt-and-nut adjustment
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C7/00Parts, details, or accessories of chairs or stools
    • A47C7/002Chair or stool bases
    • A47C7/004Chair or stool bases for chairs or stools with central column, e.g. office chairs
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C7/00Parts, details, or accessories of chairs or stools
    • A47C7/002Chair or stool bases
    • A47C7/006Chair or stool bases with castors
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C7/00Parts, details, or accessories of chairs or stools
    • A47C7/02Seat parts
    • A47C7/024Seat parts with double seats
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C7/00Parts, details, or accessories of chairs or stools
    • A47C7/02Seat parts
    • A47C7/34Seat parts with springs in compression, e.g. coiled
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C7/00Parts, details, or accessories of chairs or stools
    • A47C7/36Support for the head or the back
    • A47C7/38Support for the head or the back for the head
    • A47C7/383Detachable or loose head- or neck-supports, e.g. horse-shoe shaped
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C7/00Parts, details, or accessories of chairs or stools
    • A47C7/36Support for the head or the back
    • A47C7/40Support for the head or the back for the back
    • A47C7/48Support for the head or the back for the back of freely-rotatable type

Landscapes

  • Special Chairs (AREA)

Abstract

The invention provides a posture-correcting and vision-correcting learning chair which comprises a supporting frame and a chair back, wherein the chair back is matched with the supporting frame through a spherical hinge; the chair seat assembly comprises a chair seat and a cushion, and the cushion is matched with the chair seat through a spherical hinge; and one end of the spring is connected with the chair seat, and the other end of the spring is connected with the cushion. Through adopting ball pivot complex design between the back of the chair, when the back of the chair receives the external force effect of leaning on, rotate along with the atress direction takes place, back of the chair position adaptation is human, alleviate fatigue, waist ache, through the ball pivot design between cushion and the seat support, when the cushion receives the external force effect, the cushion slope adapts to human, it leads to shank blood circulation not smooth to avoid producing the extrusion phenomenon between cushion and the thigh lower part, the numb problem of shank, simultaneously, combine the bulb to fix on the connecting rod, the design of recess for being greater than the recess of hemisphere, when the back of the chair rotates, make the arbitrary direction turned angle of the back of the chair all control within 45 degrees, can not appear because the too big back of the chair turned angle that leads to of the chair that leads to.

Description

Posture-correcting and vision-correcting learning chair
Technical Field
The invention relates to a chair, in particular to a posture-correcting and vision-correcting learning chair.
Background
In the existing study chair, the relationship between the cushion, the chair back and the human body is that the cushion and the chair back are adapted by people.
In the using process, the phenomenon of extrusion exists between the lower part of the thigh and the cushion, which causes the problems of unsmooth blood circulation of the legs and numbness of the legs.
As a person adapts to the chair back, the chair back gives a counterforce to the person, and the waist is easy to ache and fatigue when leaning.
Disclosure of Invention
The invention provides a posture-correcting and vision-correcting learning chair aiming at the defects of the prior art, the chair back and the supporting frame are matched through a spherical hinge, when the chair back is acted by leaning external force, the chair back rotates along with the stress direction, the chair back position adapts to a human body, fatigue and waist ache are relieved, the cushion and the chair seat are designed through the spherical hinge, when the cushion is acted by the external force, the cushion is inclined to adapt to the human body, the problems of unsmooth blood circulation of legs and numbness of the legs caused by the extrusion phenomenon generated between the cushion and the lower parts of thighs are avoided, meanwhile, the rotation angle of the chair back in any direction is controlled within 45 degrees by combining the design that a ball head is fixed on the connecting rod, and the groove is larger than a hemisphere when the chair back rotates, so that the problem that the rotation angle of the chair back is too large.
In order to achieve the purpose, the invention provides the following technical scheme: chair is learned to posture correction rectification, includes:
a support frame;
the chair back component comprises a chair back and a connecting rod for connecting the chair back and the support frame, one end of the connecting rod is fixed with a ball head, the other end of the connecting rod is fixed on the support frame, a connecting piece is fixedly arranged at the center of the back of the chair back, a groove larger than a hemisphere is formed in the connecting piece, and the ball head is arranged in the groove to enable the connecting piece and the connecting rod to form a spherical hinge fit, or
The connecting piece is fixed on the supporting frame, one end of the connecting rod is fixed with a ball head, and the other end of the connecting rod is fixed on the chair back;
seat support subassembly, seat support subassembly include seat support and cushion, and the cushion is located the seat support top, and the seat support is fixed on the support frame, and seat support up end center department is fixed with the stand, and the stand upper end is fixed with bulb A, and the cushion lower extreme face has connecting piece A, has the recess A that is greater than the hemisphere on the connecting piece A, and bulb A installs and makes in recess A connecting piece A and stand between form the ball pivot cooperation, or
The upright post is fixed on the lower end surface of the cushion, the lower end of the upright post is fixed with a ball head A, and the connecting piece A is fixed on the upper end surface of the seat;
the springs are at least four, the two sides of the upper end face of the seat taking the upright post as the center are distributed in a rectangular shape, one end of each spring is connected with the seat, and the other end of each spring is connected with the cushion.
In addition to the above, it is preferable that the connector and the connector a are both 3/4 balls, and the connector a are provided with slits.
In addition to the above-described aspect, preferably, the connector and the connector a are further provided with a hoop for closing the slit.
On the basis of the scheme, preferably, a rubber pad is arranged in the groove, and lines protruding out of the surface of the rubber pad are arranged on the surface of the rubber pad, which is in contact with the ball head.
On the basis of the scheme, preferably, a rubber pad A is arranged in the groove A, and a surface, which is in contact with the ball head A, of the rubber pad A is provided with grains A protruding out of the surface.
On the basis of the scheme, preferably, the upper end of the support frame is provided with a hole with an axis in the vertical direction, an L-shaped connecting piece is installed in the hole, one end of the L-shaped connecting piece is provided with a plug-in part, and the other end of the L-shaped connecting piece is provided with a head fixer matched with the radian of the forehead of a human brain.
On the basis of the scheme, preferably, the inserting part is provided with a plurality of through holes which are distributed at intervals in the axial direction, and the L-shaped connecting piece is fixed with the supporting frame after the bolt passes through the mounting hole and the through holes on the supporting frame.
On the basis of the above scheme, preferably, two opposite side surfaces of the insertion part are provided with racks, the racks are meshed with gears arranged on the support frame, and the gear shafts are in running fit with the support frame.
Compared with the prior art, the invention has the beneficial effects that:
1. through adopting the design of ball pivot complex between the back of the chair and the support frame, when the back of the chair receives the external force effect of leaning on, rotate along with the atress direction takes place, back of the chair position adaptation is human, it is tired to alleviate, waist ache, through the design of ball pivot between cushion and the seat support, when the cushion receives the external force effect, the cushion slope adapts to the human body, it leads to the not smooth of shank blood circulation to avoid producing the extrusion phenomenon between cushion and the thigh lower part, the numb problem of shank, simultaneously, combine the bulb to fix on the connecting rod, the design of recess for being greater than the recess of hemisphere, when the back of the chair rotates, make the arbitrary direction turned angle of the back of the chair all control within 45 degrees, can not appear because the too big back of.
2. Due to the design of the split, the ball head and the groove are convenient to mount.
3. The hoop is arranged, so that the service lives of the connecting piece and the connecting piece A are prolonged.
4. Through the design of the rubber pad, the problem that the posture of a person is unbalanced due to the fact that the chair back and the cushion rotate to a large extent instantly when stressed is avoided.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the construction of the chair back and the connecting member;
FIG. 3 is a schematic view of the structure of the ball head and the connecting rod;
fig. 4 is a schematic view of the seat cushion;
fig. 5 is a schematic structural view of the seat.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1-5, the chair for learning to correct posture and vision comprises:
a support frame;
the back of the chair subassembly, back of the chair subassembly include the back of the chair 1 and with the connecting rod 6 that the back of the chair is connected with support frame 5, connecting rod one end is fixed with bulb 7, the other end is fixed on the support frame, the back center department fixed mounting of the back of the chair has connecting piece 2, has the recess 3 that is greater than the hemisphere on the connecting piece, the bulb is installed in the recess and is made to form the spherical hinge cooperation between connecting piece and the connecting rod, or
The connecting piece is fixed on the supporting frame, one end of the connecting rod is fixed with a ball head, and the other end of the connecting rod is fixed on the chair back;
seat support subassembly, seat support subassembly include seat support 8 and cushion 14, and the cushion is located the seat support top, and the seat support is fixed on the support frame, and seat support up end center department is fixed with stand 9, and the stand upper end is fixed with bulb A10, and the cushion lower extreme mask has connecting piece A11, has the recess A12 that is greater than the hemisphere on the connecting piece A, and bulb A installs and makes in recess A connecting piece A and stand between form the ball pivot cooperation, or bulb A installs and makes
The upright post is fixed on the lower end surface of the cushion, the lower end of the upright post is fixed with a ball head A, and the connecting piece A is fixed on the upper end surface of the seat;
the springs 13 are at least four, the two sides of the upper end face of the seat taking the upright post as the center are distributed in a rectangular shape, one end of each spring is connected with the seat, and the other end of each spring is connected with the cushion.
Wherein, connect through quick detach articulate between support frame and the connecting rod, quick detach connects and connecting rod welded fastening, and quick detach connects for the U-shaped steel, and the opening part both ends of U-shaped steel are connected through screw rod, nut and are shrunk down or loosen the opening part, set up the rubber pad between U-shaped steel and the support frame and increase frictional force.
In foretell scheme, through adopting ball pivot complex design between the back of the chair and the support frame, when the back of the chair receives to lean on exogenic action, rotate along with the atress direction takes place, back of the chair position adaptation is human, alleviate fatigue, waist ache, design through the ball pivot between cushion and the seat support, when the cushion receives exogenic action, the cushion slope adapts to human, it leads to the circulation of shank blood not smooth to avoid producing the extrusion phenomenon between cushion and the thigh lower part, the numb problem of shank, simultaneously, combine the bulb to fix on the connecting rod, the design of recess for being greater than the recess of hemisphere, when the back of the chair rotates, make arbitrary direction turned angle of the back of the chair all control within 45 degrees, can not appear because the too big back of the chair turned angle that leads to of the chair too big influence balanced problem, in addition, the spring still plays.
Wherein, connecting piece and connecting piece A are 3/4 spheres, and are equipped with breach 4 on connecting piece and connecting piece A, the spherical design of 3/4, further guarantee the turned angle of ball pivot, guarantee safety, the design of breach is convenient for install between bulb and the recess.
Wherein, still be equipped with the staple bolt that is used for closing the breach on connecting piece and connecting piece A, the existence of staple bolt to the life of extension connecting piece and connecting piece A.
In order to avoid the problem that the chair back and the cushion rotate greatly in the moment when stressed to cause unbalanced posture, the groove is internally provided with the rubber pad to improve the friction force, the surface of the rubber pad, which is in contact with the ball head, is provided with grains protruding out of the surface, so that the friction force is further improved, the groove A is internally provided with the rubber pad A, and the surface of the rubber pad A, which is in contact with the ball head A, is provided with the grains A protruding out of the surface.
The upper end of the support frame is provided with a hole with an axis in the vertical direction, an L-shaped connecting piece 16 is arranged in the hole, one end of a L-shaped connecting piece is provided with a plug-in part, the other end of the connecting piece is provided with a head fixer 15 matched with the radian of the forehead of a human brain, and through the design of the head fixer, when the chair is used for learning by sitting and standing on the chair, the head is fixed by the head fixer, so that the head keeps a correct posture, and the eyesight is protected.
In order to make the head fixer suitable for people with different heights, the L-shaped connecting piece and the support frame are designed to be adjustable up and down so as to be suitable for different people, the inserting part is provided with a plurality of through holes which are distributed at intervals in the axial direction, and the L-shaped connecting piece is fixed with the support frame after the bolt passes through the mounting hole and the through hole in the support frame
Two opposite side surfaces of the insertion part are provided with racks which are meshed with gears arranged on the support frame, and the gear shaft and the support frame are in running fit.
The seat is fixed with a sleeve 17, the sleeve 17 is sleeved on a lower end upright rod 51 of the support frame 5, the upright rod is provided with a plurality of through holes 18, and a bolt 19 penetrates through the sleeve and the through holes to fix the upright rod, the sleeve and the seat.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (8)

1. Chair is learned to posture correction correcting look, its characterized in that includes:
a support frame;
the chair back component comprises a chair back and a connecting rod for connecting the chair back and the support frame, one end of the connecting rod is fixed with a ball head, the other end of the connecting rod is fixed on the support frame, a connecting piece is fixedly arranged at the center of the back of the chair back, a groove larger than a hemisphere is formed in the connecting piece, and the ball head is arranged in the groove to enable the connecting piece and the connecting rod to form a spherical hinge fit, or
The connecting piece is fixed on the supporting frame, one end of the connecting rod is fixed with a ball head, and the other end of the connecting rod is fixed on the chair back;
seat support subassembly, seat support subassembly include seat support and cushion, and the cushion is located the seat support top, and the seat support is fixed on the support frame, and seat support up end center department is fixed with the stand, and the stand upper end is fixed with bulb A, and the cushion lower extreme face has connecting piece A, has the recess A that is greater than the hemisphere on the connecting piece A, and bulb A installs and makes in recess A connecting piece A and stand between form the ball pivot cooperation, or
The upright post is fixed on the lower end surface of the cushion, the lower end of the upright post is fixed with a ball head A, and the connecting piece A is fixed on the upper end surface of the seat;
the springs are at least four, the two sides of the upper end face of the seat taking the upright post as the center are distributed in a rectangular shape, one end of each spring is connected with the seat, and the other end of each spring is connected with the cushion.
2. The chair as claimed in claim 1, wherein the connecting member and the connecting member A are 3/4 spheres and the connecting member A are provided with slits.
3. The chair for learning to correct posture and to correct vision as claimed in claim 2, wherein the connecting member and the connecting member a are further provided with a hoop for closing the slit.
4. The chair as claimed in claim 1, wherein a rubber pad is disposed in the groove, and the surface of the rubber pad contacting the ball has a texture protruding therefrom.
5. The chair as claimed in claim 1, wherein a rubber pad A is provided in the recess A, and a surface of the rubber pad A contacting the ball A has a texture A protruding therefrom.
6. The chair as claimed in claim 1, wherein the support frame has a hole with an axis in the vertical direction at the upper end, L-shaped connector is installed in the hole, one end of L-shaped connector has a plug-in part, and the other end has a head fixer matching the radian of forehead of human brain.
7. The chair as claimed in claim 6, wherein the insertion part has a plurality of through holes spaced in the axial direction, and the L-shaped connecting member is fixed to the supporting frame after the bolt passes through the mounting hole and the through hole of the supporting frame.
8. The chair for learning to correct posture and to correct vision as claimed in claim 6, wherein the opposite sides of the insertion part have racks, the racks are engaged with the gears mounted on the supporting frame, and the gear shafts are rotatably engaged with the supporting frame.
CN202010297611.2A 2020-04-16 2020-04-16 Posture-correcting and vision-correcting learning chair Pending CN111466740A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010297611.2A CN111466740A (en) 2020-04-16 2020-04-16 Posture-correcting and vision-correcting learning chair

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010297611.2A CN111466740A (en) 2020-04-16 2020-04-16 Posture-correcting and vision-correcting learning chair

Publications (1)

Publication Number Publication Date
CN111466740A true CN111466740A (en) 2020-07-31

Family

ID=71754102

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010297611.2A Pending CN111466740A (en) 2020-04-16 2020-04-16 Posture-correcting and vision-correcting learning chair

Country Status (1)

Country Link
CN (1) CN111466740A (en)

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4418416A1 (en) * 1994-05-26 1995-11-30 Guenther Boehme Orthopaedic chair with adjustable seat
CN203780785U (en) * 2014-01-07 2014-08-20 王永志 Conveniently detachable oar fixing structure
CN203828460U (en) * 2014-05-19 2014-09-17 丁毅 Chair having free adjusting function
CN205306462U (en) * 2015-12-09 2016-06-15 北京市丽日办公用品有限责任公司 Chair
CN105725558A (en) * 2016-03-24 2016-07-06 徐州猎奇商贸有限公司 Office chair
CN107692546A (en) * 2017-11-10 2018-02-16 长春光速科技有限公司 A kind of student's seat for studying
CN107692623A (en) * 2017-11-06 2018-02-16 浙江粤强家具科技有限公司 A kind of multi-point heighten and using when the office chair that is fixed easily
CN207639966U (en) * 2017-05-13 2018-07-24 阚继初 A kind of backrest can follow the chair of human waist and back movement
CN208221350U (en) * 2018-03-22 2018-12-11 浙江圣奥家具制造有限公司 A kind of universal joint and the Chair back containing the universal joint
CN110023638A (en) * 2016-12-02 2019-07-16 Zf腓特烈斯哈芬股份公司 Ball-and-socket for spherical hinge
CN110150891A (en) * 2018-10-11 2019-08-23 永艺家具股份有限公司 A kind of adaptive support device and chair tool of chair tool

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4418416A1 (en) * 1994-05-26 1995-11-30 Guenther Boehme Orthopaedic chair with adjustable seat
CN203780785U (en) * 2014-01-07 2014-08-20 王永志 Conveniently detachable oar fixing structure
CN203828460U (en) * 2014-05-19 2014-09-17 丁毅 Chair having free adjusting function
CN205306462U (en) * 2015-12-09 2016-06-15 北京市丽日办公用品有限责任公司 Chair
CN105725558A (en) * 2016-03-24 2016-07-06 徐州猎奇商贸有限公司 Office chair
CN110023638A (en) * 2016-12-02 2019-07-16 Zf腓特烈斯哈芬股份公司 Ball-and-socket for spherical hinge
CN207639966U (en) * 2017-05-13 2018-07-24 阚继初 A kind of backrest can follow the chair of human waist and back movement
CN107692623A (en) * 2017-11-06 2018-02-16 浙江粤强家具科技有限公司 A kind of multi-point heighten and using when the office chair that is fixed easily
CN107692546A (en) * 2017-11-10 2018-02-16 长春光速科技有限公司 A kind of student's seat for studying
CN208221350U (en) * 2018-03-22 2018-12-11 浙江圣奥家具制造有限公司 A kind of universal joint and the Chair back containing the universal joint
CN110150891A (en) * 2018-10-11 2019-08-23 永艺家具股份有限公司 A kind of adaptive support device and chair tool of chair tool

Similar Documents

Publication Publication Date Title
US7775944B1 (en) Kinematic rotating-tilting mechanism
CN111466740A (en) Posture-correcting and vision-correcting learning chair
CN111466739A (en) Chair seat assembly of posture-correcting and vision-correcting learning chair
CN202739212U (en) Health care desk and chair with backrest and knee pillow capable of adjusting position and seat capable of moving with people
CN104783534A (en) Sitting posture correction chair
CN111616849A (en) Human body spine curvature deformation prevention device
CN207152319U (en) A kind of chair back multi-angle regulation seat
CN208525342U (en) A kind of novel backrest and shank link massage armchair
CN214317546U (en) Cervical vertebra support of computer desk
CN210249207U (en) Rocking chair back
CN211203522U (en) Notebook computer support
CN108308913A (en) A kind of student chair for correcting sitting posture
CN114287758A (en) Posture-correcting myopia-preventing desk and chair
CN217408132U (en) Widened student row desk and chair
CN110074553A (en) A kind of adjustable lifting desk chair of desktop
CN216665997U (en) Pitching adjusting structure of floor fan
CN211380407U (en) Seat with adjustable return speed
CN200973524Y (en) Free chair
CN216494519U (en) Single-rod back-tracking chair capable of being manually adjusted
CN105795771B (en) Stool
CN219594120U (en) Sitting posture correcting learning chair
CN211633968U (en) Armrest structure and wheelchair
CN215190085U (en) Safety device is used in children's education and teaching
CN2449572Y (en) Rotary lifting chair
CN110193167B (en) Spring-piece type trampoline

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20200731

RJ01 Rejection of invention patent application after publication