CN110338582B - Myopia-preventing reading chair - Google Patents
Myopia-preventing reading chair Download PDFInfo
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- CN110338582B CN110338582B CN201910690794.1A CN201910690794A CN110338582B CN 110338582 B CN110338582 B CN 110338582B CN 201910690794 A CN201910690794 A CN 201910690794A CN 110338582 B CN110338582 B CN 110338582B
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- myopia
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- 208000001491 myopia Diseases 0.000 title claims abstract description 26
- 229920001971 elastomer Polymers 0.000 claims description 14
- 230000005540 biological transmission Effects 0.000 claims description 12
- 239000000806 elastomer Substances 0.000 claims description 8
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 230000004379 myopia Effects 0.000 abstract description 9
- 230000036544 posture Effects 0.000 abstract description 7
- 230000002265 prevention Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 210000001525 retina Anatomy 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/36—Support for the head or the back
- A47C7/40—Support for the head or the back for the back
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/50—Supports for the feet or the legs coupled to fixed parts of the chair
- A47C7/506—Supports for the feet or the legs coupled to fixed parts of the chair of adjustable type
- A47C7/5066—Supports for the feet or the legs coupled to fixed parts of the chair of adjustable type by rotation
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/62—Accessories for chairs
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F5/00—Orthopaedic methods or devices for non-surgical treatment of bones or joints; Nursing devices; Anti-rape devices
- A61F5/01—Orthopaedic devices, e.g. splints, casts or braces
- A61F5/02—Orthopaedic corsets
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B21/00—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings
- F16B21/06—Releasable fastening devices with snap-action
- F16B21/07—Releasable fastening devices with snap-action in which the socket has a resilient part
- F16B21/073—Releasable fastening devices with snap-action in which the socket has a resilient part the socket having a resilient part on its inside
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- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Nursing (AREA)
- Mechanical Engineering (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
- Rehabilitation Tools (AREA)
Abstract
The invention provides a myopia-preventing reading chair which comprises a spine correction garment and a chair, wherein the spine correction garment is worn on the back of a reading person, a vertically-arranged support frame is mounted on the spine correction garment, and the support frame is used for supporting the spine so that the back of the reading person is vertically arranged; the chair back of the chair is provided with a near end face and a far end face, the near end face is provided with a correction groove for accommodating the support frame, the far end face is provided with two vertically arranged grooves, the two grooves are respectively positioned at two sides of the correction groove, the side wall of each groove is provided with a through hole communicated with the correction groove, and a lock tongue is arranged in the through hole in a slidable manner; the driving piece is installed on the end face of a remote person and used for driving the spring bolt to slide in the correction groove after the support frame is embedded into the correction groove until the support frame is locked on the surface of the support frame in an abutting mode. The myopia-preventing reading chair provided by the invention is convenient for correcting reading postures and preventing myopia.
Description
Technical Field
The invention relates to the field of chairs, in particular to a myopia-preventing reading chair.
Background
Myopia is also called short-sighted and can only be seen near but not far; when the eye is at rest, parallel light from infinity is refracted by the dioptric system of the eye and then focused in front of the retina, thus forming an unclear image on the retina.
At present, myopia of children in primary school stage in China is common, and the reason is often related to incorrect posture of the children when reading and writing, and the proper distance between the eyes and the desk top cannot be kept, namely, when writing or reading, the children bend over the back, so that the distance between the eyes and the book is too close, and the myopia is formed in the long term. In order to correct the reading posture of students, spine correction clothes are available on the market, for example, the spine correction clothes are good at back, and when the spine correction clothes are used, the spine correction clothes are worn on the students to support the spines of the students, so that the spines of the students cannot be bent, and the students are prevented from keeping hunchback state to read.
The problem that clothing was corrected to current backbone exists is, can only fix the backbone, and student's waist can't be fixed, shines into that the student is straight at the back, but relies on the bending of waist, and the student mostly lies prone on the desk and reads, does not reach the effect of prevention myopia, fixes the backbone moreover for a long time, is unfavorable for the development of backbone.
Disclosure of Invention
Aiming at the defects in the prior art, the myopia-preventing reading chair provided by the invention is convenient for correcting the reading posture and preventing myopia.
The invention provides a myopia prevention reading chair, which comprises:
the spine correction clothes are used for being worn on the back of a reader, a vertically arranged support frame is mounted on the spine correction clothes, and the support frame is used for supporting the spine so that the back of the reader is vertically arranged;
the chair comprises a chair, wherein a chair back of the chair is provided with a near end face and a far end face, the near end face is provided with a correction groove for accommodating a support frame, the far end face is provided with two vertically arranged grooves, the two grooves are respectively positioned at two sides of the correction groove, the side wall of each groove is provided with a through hole communicated with the correction groove, and a lock tongue is arranged in the through hole in a slidable manner;
the driving piece is used for driving the spring bolt to slide in the correction groove after the support frame is embedded into the correction groove until the support frame is locked on the surface of the support frame through butt joint.
Optionally, the support frame includes a plurality of joint components, each joint component includes a joint plate and a support block, the support block is fixed on the joint plate, the top of the joint plate is provided with a receiving groove, the bottom of the joint plate is provided with a short shaft perpendicular to the joint plate, and the bottom of the joint plate is embedded into the receiving groove of the adjacent joint plate and can rotate around the short shaft.
Optionally, the one end of spring bolt stretches into the ditch inslot and forms the tip boss, the tip boss is connected with the lateral wall of slot through an elastomer, the elastomer is used for making the tip boss keep the trend to keeping away from correction groove one side motion, the driving piece includes the power board, the power board is installed on far away people's terminal surface to can follow vertical direction and slide on far people's terminal surface, the push rod is all installed to the both sides of power board, the push rod imbeds in the ditch inslot and is connected with tip boss wedge.
Optionally, the driving member further comprises a pedal, a connecting rod, a rotating wheel and a horizontally arranged gear shaft; the chair comprises a chair body, a gear shaft, a power gear, a rack, a handrail supporting plate, a pedal, a rotating wheel, a connecting rod and a rotating wheel, wherein the gear shaft is rotatably arranged on the far end face of a person and is fixedly provided with the power gear, the rack is arranged on the power plate and is meshed with the power gear, the base of the chair is provided with the handrail supporting plate, the pedal is rotatably arranged at the bottom of the handrail supporting plate, the rotating wheel is rotatably arranged at the top of the handrail supporting plate and is in transmission connection with the end part of the gear shaft, one end of the connecting rod is hinged on the pedal, and the other opposite end of the connecting rod is hinged on the rotating wheel.
Optionally, the rotating wheel includes two wheel sets respectively installed at left and right sides of a base of the chair, the wheel sets include an inner rotating wheel and an outer rotating wheel, a cavity is provided in the armrest support plate, the inner rotating wheel and the outer rotating wheel are respectively located at two sides of the cavity and rotatably installed on the armrest support plate, connecting shafts are installed on the inner rotating wheel and the outer rotating wheel, the connecting shafts penetrate through the armrest support plate and are inserted into the cavity, a clutch is installed in the cavity, the clutch is used for connecting or separating the two connecting shafts, one of the outer rotating wheels is in transmission connection with the gear shaft, gear teeth are arranged on the outer circumferential surface of the other outer rotating wheel and are engaged with a steering gear through the gear teeth, and the steering gear is in transmission connection with the gear shaft.
Optionally, the clutch comprises a turntable I, a turntable II, a key and a spring I; carousel I fixes on one of them connecting axle, carousel II connects with another connecting axle key-type to can follow the horizontal direction and slide on the connecting axle, carousel II is close to carousel I's one end and installs the rubber layer, and the one end of keeping away from carousel I is provided with the conical surface, it has the through-hole with the cavity intercommunication to open on the handrail extension board, the button inserts the cavity along the through-hole and forms the wedge to with handrail extension board sliding connection, wedge and conical surface butt, spring I's both ends are connected with button and handrail extension board respectively.
Optionally, a plurality of rotatable balls are mounted on the wedge-shaped surface, and an outer circumferential surface of each ball abuts against the conical surface.
Optionally, the elastic body is a spring II, and two ends of the spring II are respectively connected with the side wall of the groove and the end boss.
According to the technical scheme, the invention has the beneficial effects that: the invention provides a myopia-preventing reading chair which comprises a spine correction garment and a chair, wherein the spine correction garment is worn on the back of a reading person, a vertically-arranged support frame is mounted on the spine correction garment, and the support frame is used for supporting the spine so that the back of the reading person is vertically arranged; the chair back of the chair is provided with a near end face and a far end face, the near end face is provided with a correction groove for accommodating the support frame, the far end face is provided with two vertically arranged grooves, the two grooves are respectively positioned at two sides of the correction groove, the side wall of each groove is provided with a through hole communicated with the correction groove, and a lock tongue is arranged in the through hole in a slidable manner; the driving piece is used for driving the spring bolt to slide in the correction groove after the support frame is embedded into the correction groove until the support frame is locked on the surface of the support frame through butt joint. The myopia-preventing reading chair provided by the invention is convenient for correcting reading postures and preventing myopia.
Drawings
In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic perspective view of the present invention in a rear view;
FIG. 3 is a schematic structural view of the driving member;
FIG. 4 is a schematic structural view of the push rod;
FIG. 5 is a schematic diagram of the clutch;
FIG. 6 is an enlarged view taken at A in FIG. 5;
fig. 7 is a schematic structural view of the support frame.
Reference numerals:
1-support frame, 2-chair, 3-bolt, 4-drive piece, 5-clutch, 11-joint plate, 12-support block, 21-chair back, 22-base, 23-armrest support plate, 31-end boss, 32-spring II, 41-power plate, 42-pedal, 43-connecting rod, 44-rotating wheel, 45-gear shaft, 51-rotating disc I, 52-rotating disc II, 53-key, 54-spring I, 111-containing groove, 112-short shaft, 211-near end face, 212-far end face, 213-correction groove, 214-groove, 215-through hole, 231-cavity, 232-through hole, 411-push rod, 441-inner rotating wheel, 442-outer rotating wheel, 443-connecting shaft, 444-steering gear, 451-power gear, 521-conical surface, 531-wedge surface and 532-ball.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
Referring to fig. 1-7, the myopia-preventing reading chair provided in this embodiment includes:
the spine correction clothes are worn on the back of a reader, a support frame 1 which is vertically arranged is mounted on the spine correction clothes, and the support frame is used for supporting the spine so that the back of the reader is vertically arranged; the spinal orthosis is not shown in fig. 1.
The chair 2 is characterized in that a chair back 21 of the chair is provided with a near end face 211 and a far end face 212, the near end face 211 is provided with a correction groove 213 for accommodating a support frame, the far end face 212 is provided with two vertically arranged grooves 214, the two grooves are respectively positioned at two sides of the correction groove, the side wall of each groove is provided with a through hole 215 communicated with the correction groove, and a lock tongue 3 is slidably arranged in the through hole;
wherein, install driving piece 4 on the people's terminal surface far away, the driving piece is used for after the support frame embedding correction groove, and the drive spring bolt slides to correcting the groove, until the butt at the surface locking support frame of support frame.
When the spine correction clothes are used, the spine correction clothes are worn on the body of a reader, and the support frame is used for supporting the spine, so that the back of the reader is vertically arranged. The reading personnel sits on chair 2, and the back supports and leans on near people's terminal surface 211 at the back of the chair 21, support frame 1 embedding is corrected in the groove 213, driving piece 4 drive spring bolt slides to correcting the groove, until the butt at the surperficial locking support frame of support frame. At this time, the back of the reader is vertically arranged and fixed on the chair back 21 of the chair, the waist of the reader cannot be bent, and the spine cannot be bent. The reader can only keep a fixed posture to read, and the eyes of the reader are prevented from being too close to the book. The myopia prevention reading chair that this embodiment provided is convenient for correct reading posture, is convenient for prevent near-sightedly. Optionally, an anti-slip rubber layer is arranged on the outer peripheral surface of the support frame 1, and the lock tongue is pressed against the anti-slip rubber layer, so that friction force is increased conveniently, and the support frame 1 is fixed conveniently. It will be appreciated that in this embodiment, the spinal orthosis only acts to wrap the upper body of the reader to secure the support 1 to the back of the reader. The spinal orthosis is flexible.
As a further improvement of the above technical solution, the supporting frame 1 includes a plurality of joint components, each joint component includes a joint plate 11 and a supporting block 12, the supporting block is fixed on the joint plate, the top of the joint plate 11 is provided with a receiving groove 111, the bottom of the joint plate is provided with a short shaft 112 perpendicular to the joint plate, and the bottom of the joint plate is embedded in the receiving groove of the adjacent joint plate and can rotate around the short shaft. Under the initial condition, support frame 1 and the back of the chair separation of chair, when reading personnel's activity, articulated plate 11 is rotatory along with the motion of backbone, and the personnel of being convenient for read move about the health, prevent to force the spine fixed for a long time, the growth of the backbone of being convenient for is developed. During reading, the support frame 1 is embedded into the correction groove 213, the lock tongue 3 is pressed against the support blocks 12, a reader is fixed on the chair back 21 of the chair, and at the moment, the adjacent support blocks 12 are mutually abutted, so that the support frame 1 is in a vertical state. It can be understood that the plurality of joint plates 11 are connected to form a curved surface fitting the back curve of a person, so that the spine is protected and the spine is prevented from being deformed.
As a further improvement to the above technical scheme, the one end of spring bolt 3 stretches into the ditch inslot and forms tip boss 31, the tip boss is connected with the lateral wall of ditch inslot through an elastomer, the elastomer is used for making the tip boss keep the trend to keeping away from correction groove one side motion, driving piece 4 includes power plate 41, power plate installs on the terminal surface of distant people to can follow vertical direction and slide on the terminal surface of distant people, push rod 411 is all installed to the both sides of power plate 41, the push rod embedding ditch inslot is connected with tip boss wedge. In an initial state, the push rod 411 is separated from the end boss 31, one end of the latch 3 is received in the through hole 215, and the other end is inserted into the groove 214 to form the end boss 31. When the support frame 1 needs to be locked, the power plate 41 slides upwards, the push rod 411 contacts with the end boss 31, and along with the sliding of the power plate 41, the push rod 411 extrudes the end boss 31, so that the bolt 3 is inserted into the correction groove 213 and is pressed on the support frame 1 to lock the support frame 1. When the supporting frame 1 needs to be loosened, the power plate 41 slides downwards to restore the initial state, and the bolt 3 moves towards one side far away from the correction groove under the action of the elastic body to restore the initial state. Simple structure is convenient for lock or loosen support frame 1. The elastomer is spring II32, spring II's both ends are connected with the lateral wall and the tip boss of slot respectively.
As a further improvement to the above technical solution, the driving member 4 further includes a pedal 42, a connecting rod 43, a rotating wheel 44 and a horizontally arranged gear shaft 45; the gear shaft 45 is rotatably mounted on the far end face, a power gear 451 is fixed on the gear shaft, a rack is mounted on the power plate, the rack is meshed with the power gear, an armrest support plate 23 is mounted on the base 22 of the chair 2, the pedal is rotatably mounted at the bottom of the armrest support plate, the rotating wheel is rotatably mounted at the top of the armrest support plate, the rotating wheel is in transmission connection with the end portion of the gear shaft, one end of the connecting rod is hinged on the pedal, and the other opposite end of the connecting rod is hinged on the rotating wheel. The rotating wheel 44 is in transmission connection with the end of the gear shaft through a transmission belt. The pedal 42 has a spindle rotatably mounted to the bottom of the arm rest support by a torsion spring. In an initial state, the pedal 42 is horizontally arranged, when the support frame 1 needs to be locked, the pedal 42 is stepped by feet, so that the pedal 42 swings on the handrail support plate, the connecting rod 43 drives the rotating wheel 44 to rotate, the rotation of the gear shaft 45 is realized, and the power plate slides upwards under the action of the power gear. Because the reading personnel fix on the back of the chair during the use, the driving piece 4 that this embodiment provided relies on the foot to step on the slip of drive power board, need not reading personnel to bow, and the reading personnel of being convenient for use.
As a further improvement to the above technical solution, the turning wheel 44 includes two wheel sets respectively installed at the left and right sides of the base of the chair, the wheel set comprises an inner rotating wheel 441 and an outer rotating wheel 442, a cavity 231 is arranged in the handrail support plate 23, the inner rotating wheel and the outer rotating wheel are respectively positioned at two sides of the cavity, and is rotatably mounted on the handrail support plate, the inner rotating wheel and the outer rotating wheel are both provided with a connecting shaft 443, the connecting shaft penetrates through the handrail support plate and is inserted into the cavity, a clutch 5 is arranged in the cavity and used for connecting or separating the two connecting shafts, one of the outer rotating wheels is in transmission connection with the gear shaft, the outer rotating wheel is called a forward transmission wheel, the outer peripheral surface of the other outer rotating wheel is provided with gear teeth, and through which it meshes with a steering gear 444, referred to as a reverse gear, which is drivingly connected to the gear shaft. The two connecting shafts 443 are coaxially arranged and are in a separated state. As shown in fig. 1, for convenience of description, the outer turning wheel on the left side of the chair is referred to as a forward turning wheel, and the outer turning wheel on the right side of the chair is referred to as a reverse turning wheel, when the support frame 1 needs to be locked, the two connecting shafts 443 on the left side of the chair are connected through the clutch 5, the pedal 42 is stepped on by feet, and the forward turning wheel drives the gear shaft 45 to rotate, so that the power plate is driven to slide upwards to lock the support frame 1. When the support frame 1 needs to be loosened, the two connecting shafts 443 on the right side of the chair are connected through the clutch 5, the pedal 42 is stepped on by feet, the reverse transmission wheel drives the gear shaft 45 to rotate through the steering gear 444, and therefore the power plate is driven to slide downwards to loosen the support frame 1. The power plate can be conveniently driven to slide upwards or downwards, the structure is simple, and the maintenance is convenient.
As a further improvement to the above technical solution, the clutch 5 includes a rotary disc I51, a rotary disc II52, a key 53 and a spring I54; carousel I fixes on one of them connecting axle, carousel II and another connecting axle key-type connection to can slide on the connecting axle along the horizontal direction, carousel II52 is close to carousel I's one end and installs the rubber layer, and the one end of keeping away from carousel I is provided with conical surface 521, handrail extension board 23 is last to open the through-hole 232 with the cavity intercommunication, button 53 inserts the cavity along the through-hole and forms wedge 531, and with handrail extension board 23 sliding connection, wedge and conical surface butt, spring I's both ends are connected with button and handrail extension board respectively. In an initial state, the turntable I51 is separated from the turntable II52, when the two connecting shafts are required to be connected, the key 53 is pressed downwards, the key 53 presses the turntable II52 through the conical surface 521 until the turntable II52 is pressed against the end surface of the turntable I51, and the turntable II52 generates friction force with the turntable I51 through a rubber layer, so that the turntable I51 is driven to rotate, and the connection of the two connecting shafts is realized. Simple structure and convenient maintenance. When the button 53 is released, the button 53 slides upwards on the spring I54, and the rotary disk I51 is separated from the rotary disk II 52.
As a further improvement to the above technical solution, a plurality of rotatable balls 532 are mounted on the wedge surface 531, and the outer peripheral surfaces of the balls abut against the conical surface. Facilitating the sliding of the wedge-shaped surface 531 on the conical surface.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.
Claims (7)
1. A myopia-preventing reading chair, comprising:
the spine correction clothes are worn on the back of a reader, and are provided with vertically arranged support frames (1) for supporting the spine so that the back of the reader is vertically arranged;
the chair comprises a chair (2), wherein a chair back (21) of the chair is provided with a near end face (211) and a far end face (212), the near end face (211) is provided with a correction groove (213) for accommodating a support frame, the far end face (212) is provided with two vertically arranged grooves (214), the two grooves are respectively positioned at two sides of the correction groove, the side wall of each groove is provided with a through hole (215) communicated with the correction groove, and a lock tongue (3) is arranged in the through hole in a slidable manner;
the driving piece (4) is mounted on the end face of the remote person and used for driving the spring bolt to slide into the correction groove after the support frame is embedded into the correction groove until the spring bolt abuts against the surface of the support frame to lock the support frame;
the supporting frame (1) comprises a plurality of joint components, each joint component comprises a joint plate (11) and a supporting block (12), each supporting block is fixed on the corresponding joint plate, a containing groove (111) is formed in the top of each joint plate (11), a short shaft (112) perpendicular to the corresponding joint plate is arranged at the bottom of each joint plate, and the bottoms of the joint plates are embedded into the containing grooves of the adjacent joint plates and can rotate around the short shafts.
2. The myopia-prevention reading chair of claim 1, wherein: the one end of spring bolt (3) stretches into the ditch inslot and forms tip boss (31), the tip boss is connected with the lateral wall of slot through an elastomer, the elastomer is used for making the tip boss keep the trend to keeping away from correction groove one side motion, driving piece (4) include power plate (41), the power plate is installed on the terminal surface of long-distance person to can follow vertical direction and slide on the terminal surface of long-distance person, push rod (411) are all installed to the both sides of power plate (41), the push rod embedding ditch inslot is connected with tip boss wedge.
3. The myopia-prevention reading chair of claim 2, wherein: the driving piece (4) further comprises a pedal (42), a connecting rod (43), a rotating wheel (44) and a horizontally arranged gear shaft (45); the chair is characterized in that the gear shaft (45) is rotatably mounted on the far end face, a power gear (451) is fixed on the gear shaft, a rack is mounted on the power plate and meshed with the power gear, an armrest support plate (23) is mounted on a base (22) of the chair (2), the pedal is rotatably mounted at the bottom of the armrest support plate, the rotating wheel is rotatably mounted at the top of the armrest support plate, the rotating wheel is in transmission connection with the end portion of the gear shaft, one end of the connecting rod is hinged on the pedal, and the other opposite end of the connecting rod is hinged on the rotating wheel.
4. A myopia-preventing reading chair according to claim 3, wherein: the rotating wheel (44) comprises two wheel sets which are respectively arranged at the left side and the right side of a base of the chair, the wheel sets comprise an inner rotating wheel (441) and an outer rotating wheel (442), a cavity (231) is arranged in the handrail support plate (23), the inner rotating wheel and the outer rotating wheel are respectively arranged at the two sides of the cavity and are rotatably arranged on the handrail support plate, connecting shafts (443) are respectively arranged on the inner rotating wheel and the outer rotating wheel, the connecting shafts penetrate through the handrail support plate and are inserted into the cavity, a clutch (5) is arranged in the cavity and is used for connecting or separating the two connecting shafts, one of the outer rotating wheels is in transmission connection with the gear shaft, gear teeth are arranged on the outer peripheral surface of the other outer rotating wheel and are meshed with a steering gear (444) through the gear teeth, and the steering gear is in transmission connection with the gear shaft.
5. The myopia-prevention reading chair of claim 4, wherein: the clutch (5) comprises a rotary disc I (51), a rotary disc II (52), a key (53) and a spring I (54); carousel I fixes on one of them connecting axle, carousel II connects with another connecting axle key-type to can follow the horizontal direction and slide on the connecting axle, carousel II (52) are close to carousel I's one end and install the rubber layer, and the one end of keeping away from carousel I is provided with conical surface (521), it has through-hole (232) with the cavity intercommunication to open on handrail extension board (23), button (53) insert cavity formation wedge face (531) along the through-hole to with handrail extension board (23) sliding connection, wedge face and conical surface butt, spring I's both ends are connected with button and handrail extension board respectively.
6. The myopia-prevention reading chair of claim 5, wherein: a plurality of rotatable balls (532) are mounted on the wedge-shaped surface (531), and the outer peripheral surfaces of the balls are abutted to the conical surface.
7. The myopia-prevention reading chair of claim 2, wherein: the elastomer is spring II (32), spring II's both ends are connected with the lateral wall and the tip boss of slot respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910690794.1A CN110338582B (en) | 2019-07-29 | 2019-07-29 | Myopia-preventing reading chair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910690794.1A CN110338582B (en) | 2019-07-29 | 2019-07-29 | Myopia-preventing reading chair |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110338582A CN110338582A (en) | 2019-10-18 |
| CN110338582B true CN110338582B (en) | 2022-05-20 |
Family
ID=68180371
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| Application Number | Title | Priority Date | Filing Date |
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| CN110338582A (en) | 2019-10-18 |
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