CN208524120U - A kind of pre- myopia-prevention bracket - Google Patents
A kind of pre- myopia-prevention bracket Download PDFInfo
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- CN208524120U CN208524120U CN201720926396.1U CN201720926396U CN208524120U CN 208524120 U CN208524120 U CN 208524120U CN 201720926396 U CN201720926396 U CN 201720926396U CN 208524120 U CN208524120 U CN 208524120U
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- unfolding
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- rollover stand
- myopia
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Abstract
The utility model discloses a kind of pre- myopia-prevention brackets, including telescopic folding frame and carriage, telescopic folding frame is slidably connected to below desktop by carriage, telescopic folding frame end portion is hinged on carriage, telescopic folding frame free end is equipped with chin pressure pin, and the articulated section between telescopic folding frame and carriage is equipped with overturning lockable mechanism.The utility model can force student to keep correct sitting posture always in students ' reading, period of writing, and avoid student's eyes too close to books, prevent from excessively using eye, effective pre- myopia prevention.This pre- myopia-prevention bracket is linked together with desk, not only using desk as supporting body, but also using desk as packaging container, can optionally carry out flexible conversion, not easy to lose from frequently dismounting on desk, greatly facilitates use.
Description
Technical field
The utility model relates to a kind of student's eyeshield articles, more specifically, it relates to a kind of pre- myopia-prevention bracket.
Background technique
China's student's learning pressure is larger, and heavy schoolwork burden forces student to use eye for a long time, leads to each school age Duan Xue
Raw poor eyesight rate is all high, and has increasing trend every year, has seriously affected teen-age physical and mental health.It causes to use eye
The reason of fatigue is accustomed to closely bound up with illumination condition and with eye.Many teenager's abnormal sitting postures when reading a book, writing are true, cause
Eye distance books are too close, cause lens tightening focusing for a long time and generate fatigue.Although teacher, parents' meeting are declared repeatedly
Lead that sitting posture is correct and the importance of eye health, but teenager's ability of self control is weak, depends teen-age consciousness or teacher, parent alone
Limited supervision prompting is difficult to that teenager is made always to keep correct sitting posture.For this purpose, student can be forced to keep the prevention of correct sitting posture
Near-sighted bracket comes into being, and this product has good result for prevention adolescent myopia.But such product currently on the market
Structure design there are still some shortcomings, cause product to use inconvenient, many teenagers are even when using one section
Between after to dislike it to install troublesome or easy to lose and finally give it up.The invention of Publication No. CN104905592A is in September, 2015
Disclose within 16th a kind of adjustable scale bracket of novel portable myopia prevention, including the tight device of wedge shape clamping fixing lock, band scale height
Spend adjustable support and saddle.The wedge shape clamping tight device of fixing lock can be fixed on the table by this bracket, then not according to people
Band scale brackets with height-adjustable is adjusted to optimum height with sitting posture.High pin lock is determined with the locking on scale brackets with height-adjustable
Tightly, saddle plays the role of positioning the chin of people.Furthermore saddle two sides are equipped with light intensity alarm, when light is weaker or relatively strong
When, then it is just suitable for continuing to read that light intensity alarm equipment alarm prompter, which adjusts light at this time,.This bracket is equipped with meter simultaneously
When device, two sound prompter of sound needs to rest within every 45 minutes, prevents eye fatigue.The invention have adjustment reading personnel sitting posture,
Correct the function of the distance between people and reading matter, light intensity alarm, timing rest prompt.It can be with by the coordinations of these functions
Effectively in the process of reading, eyes suffer from myopia to prevention people.But the invention clamps the tight device of fixing lock by wedge shape and is fixed on table
On face, unless desk is exclusively used in learning, once otherwise desk requires for other purposes and temporarily removes bracket, determine when bracket is reused
Position debugs, fixes just to compare and expend the time, and the bracket removed is looked for arduously, if things go on like this once receiving and keeping and being not good at will lead to
User can be lazy in use because not wanting to take the trouble.
Utility model content
Existing pre- myopia-prevention bracket is usually detachable structure, need to be fixed on desk by fixed device, installation is not
Just, it is easily lost, influences utilization rate, to overcome this defect, it is more reasonable that the utility model provides a kind of structure design, from
Installation, will not lose, pre- myopia-prevention bracket easy to use.
The technical solution of the utility model is: a kind of pre- myopia-prevention bracket, including folding and unfolding rollover stand and carriage, folding and unfolding
Rollover stand is slidably connected to below desktop by carriage, and folding and unfolding rollover stand end is hinged on carriage, and folding and unfolding is turned over
Pivoted frame free end is equipped with chin pressure pin, and the articulated section between folding and unfolding rollover stand and carriage is equipped with overturning lockable mechanism.Pass through cunning
The connection folding and unfolding rollover stand of dynamic device can be packed up or be pulled out under desktop as drawer, need using when by folding and unfolding rollover stand
It pulls out and is unfolded, be turned to appropriate angle and pass through overturning lockable mechanism holding position, chin strap bar is held under student at this time
Bar, it prevents student from bowing excessively, prevents eyes too close to books, student is forced to keep correct sitting posture, play pre- myopia prevention and make
With.When not in use, can folding and unfolding rollover stand be folded up and is pushed back, be hidden into entire folding and unfolding rollover stand under desktop, provide and relatively open
Wealthy desktop, it is otherwise utilized convenient for desk.This pre- myopia-prevention bracket is linked together with desk, not only using desk as supporting body, but also with
Desk is packaging container, can optionally carry out flexible conversion, avoid desk dedicated, so that desk is kept multipurpose, from desk
Upper frequently dismounting, it is not easy to lose, greatly facilitate use.
Preferably, folding and unfolding rollover stand free end is equipped with telescopic joint, telescopic joint and folding and unfolding rollover stand slide nested encryptions, stretch
Telescopic adjustment locking device is equipped between casing coupling and folding and unfolding rollover stand.Telescopic joint is arranged in folding and unfolding rollover stand free end, and telescopic joint can be drawn
Out or retracting, the length and telescopic adjustment locking device of change folding and unfolding rollover stand are fixed length after conciliation, thus according to
The height of user is adaptively adjusted, and when use is more comfortable.
Preferably, the carriage includes sliding bearing, sliding part and chassis, sliding bearing is fixedly arranged on desktop
On board bottom face, sliding part is slidably connected and is connected again with chassis simultaneously on the sliding bearings, and hinged seat, folding and unfolding are installed on chassis
Rollover stand end is hinged on hinged seat.Folding and unfolding rollover stand is connected on chassis, and chassis is again sliding along sliding bearing with sliding part
It is dynamic, setting is adopted the structure, the flexible draw-in and draw-off function of folding and unfolding rollover stand may be implemented.
Preferably, the overturning lockable mechanism includes the spring card bead of fixed rotating shaft, card slot and embeddable card slot, it is fixed
Shaft is fixedly arranged on hinged seat, and the rotation of folding and unfolding rollover stand end is socketed on fixed rotating shaft, and card slot is set on fixed rotating shaft circumferential surface,
Spring card bead is set in folding and unfolding rollover stand free end end face.When folding and unfolding rollover stand is rotated around fixed rotating shaft, when spring card bead is embedded in
When card slot, it is prevented that folding and unfolding rollover stand continue to rotate and return, realize folding and unfolding rollover stand overturning locking, hereafter need to use
Bigger power pushes folding and unfolding rollover stand by force, makes Spring Card integument card slot press retraction, removes card slot, can restore folding and unfolding overturning
The rotation of frame.
As an alternative, the overturning lockable mechanism includes damping joint, and damping joint is connected to hinged seat and folding and unfolding overturning
Between frame.When not pushing folding and unfolding rollover stand, damp joint makes folding and unfolding rollover stand stop operating by frictional force, only application ratio
The bigger active force of frictional force can just be such that folding and unfolding rollover stand rotates.Folding and unfolding rollover stand may be implemented in overturning model using damping joint
Interior staying at random location function is enclosed, user there can be more more options, it is easier to be adjusted to the use state of most comfortable.
Preferably, being installed with the chest bar extended along folding and unfolding rollover stand pull-out direction on chassis.Folding and unfolding rollover stand
When pulling out desktop when lower section, chest bar forms barrier between user's chest and desktop version edge, prevents user from excessively leaning on
Nearly table edge, so that user be forced to keep straight and upright, proper sitting posture.
Preferably, sliding bearing both ends are equipped with sliding part extreme position locking structure, sliding part limit position
The magnet block that locking structure includes fixed block and adsorbable sliding part is set, fixed block is fixedly arranged under desktop, sliding bearing two
End is fixedly arranged on fixed block, and magnet block is fixedly arranged on fixed block towards in the one side of sliding part.The fixation at sliding bearing both ends
Magnet block is respectively provided on block, in this way when sliding part is pushed inwardly into bottom, sliding part can be sucked in magnet block, prevent folding and unfolding rollover stand light
Sliding easily occurs and exposes outside desktop；When sliding part, which is pulled outwardly, to be at the end, sliding part is sucked in magnet block, generates sliding part resistance
Power prevents folding and unfolding rollover stand from occurring to slide and be pushed under desktop easily.
As an alternative, sliding bearing both ends are equipped with sliding part extreme position locking structure, sliding part limit position
Set the sliding part spring card bead that locking structure includes sliding bearing card slot and embeddable sliding bearing card slot, sliding bearing
Card slot is set on the bearing circumferential surface of sliding bearing, and sliding part spring card bead is set to sliding part both ends.Sliding part slides into sliding
When the extreme position of supporting member both ends, sliding part spring card bead is caught in sliding bearing card slot, prevents sliding part from being shaken or gently
It is moved back in the case where micro- pulling force, hereafter needs to pull folding and unfolding rollover stand by force with bigger power, make sliding part spring card bead
It is slidably supported part card slot press retraction, sliding bearing card slot is removed, the sliding of folding and unfolding rollover stand can be restored.
Preferably, chin pressure pin both ends are hinged on folding and unfolding rollover stand by connecting rod, and connecting rod and folding and unfolding rollover stand
Hinged place is equipped with secondary overturning lockable mechanism.Connecting rod and folding and unfolding rollover stand are hinged, form secondary foldable structure, can avoid receiving in this way
The distance for putting rollover stand hinged end to chin pressure pin is too long and causes desktop lower space depth that can not accommodate.It is turned over by secondary
Twist lock locking mechanism, the relative position between chin pressure pin and folding and unfolding rollover stand also can adjust and keep.Chin pressure pin both ends with receipts
Rollover stand connection is put, structure is more stable, withstands forces stronger.
As an alternative, it is hinged on folding and unfolding rollover stand in the middle part of chin pressure pin by connecting rod, and connecting rod and folding and unfolding rollover stand
Hinged place is equipped with secondary overturning lockable mechanism.Chin pressure pin and connecting rod structure are at T-shaped, and structure is simpler, make more material-saving.
The beneficial effects of the utility model are:
Effective pre- myopia prevention.The utility model can force student to keep correct sitting posture always in students ' reading, period of writing,
It avoids student's eyes too close to books, prevents from excessively using eye, effective pre- myopia prevention.
It is easy to use and receives and keeps.This pre- myopia-prevention bracket is linked together with desk, not only using desk as supporting body, but also with desk
For packaging container, flexible conversion can be optionally carried out, it is not easy to lose from frequently being dismounted on desk, greatly facilitate use.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the utility model；
Fig. 2 is another structural schematic diagram of the utility model；
Fig. 3 is the structural schematic diagram of the utility model in example 4；
Fig. 4 is a kind of status diagram when the utility model is taken under desktop；
Fig. 5 is a kind of structural schematic diagram that lockable mechanism is overturn in the utility model.
In figure, 1- folding and unfolding rollover stand, 2- desktop, 3- chin pressure pin, 4- sliding bearing, 5- sliding part, 6- chassis, 7-
Hinged seat, 8- fixed rotating shaft, 9- card slot, 10- chest bar, 11- connecting rod, 12- fixed block, 13- telescopic joint.
Specific embodiment
The utility model is described in further detail for specific embodiment with reference to the accompanying drawing.
Embodiment 1:
As shown in Figure 1, Figure 4, Figure 5, a kind of pre- myopia-prevention bracket, including folding and unfolding rollover stand 1 and carriage, folding and unfolding overturning
Frame 1 is slidably connected to 2 lower section of desktop by carriage, and folding and unfolding rollover stand 1 is rectangular frame structure, 1 end of folding and unfolding rollover stand
It is hinged on carriage, 1 free end of folding and unfolding rollover stand is equipped with chin pressure pin 3, hinged between folding and unfolding rollover stand 1 and carriage
Portion is equipped with overturning lockable mechanism.The carriage includes pair of sliding supporting member 4, a pair of sliders 5 and a chassis 6, sliding
Supporting member 4 is fixed on 2 bottom surface of desktop by two pairs of fixed blocks 12, and it is circular slide bar that sliding bearing 4, which is cross section, and two
Slide bar is arranged in parallel, and slide bar both ends are fixedly arranged on fixed block 12, and sliding part 5 is manufactured with the linear axis being adapted to sliding bearing 4
Be slidably connected on sliding bearing 4 at, sliding part 5 and be connected again with the welding of chassis 6 simultaneously, be welded on chassis 6 hinged seat 7 and
Along the chest bar 10 that 1 pull-out direction of folding and unfolding rollover stand extends, hinged seat 7 is located at the engaging portion of chassis 6 and chest bar 10,
1 end of folding and unfolding rollover stand is hinged on hinged seat 7.The overturning lockable mechanism includes fixed rotating shaft 8, one of card slot 9 and can be embedding
Enter the spring card bead of card slot 9, fixed rotating shaft 8 is fixedly arranged on hinged seat 7, and the rotation of 1 end of folding and unfolding rollover stand is socketed in fixed rotating shaft 8
On, card slot 9 is set on 8 circumferential surface of fixed rotating shaft, and spring card bead is set in 1 free end end face of folding and unfolding rollover stand.4 liang of sliding bearing
End is equipped with sliding part extreme position locking structure, which includes the magnet of adsorbable sliding part
Block, magnet block are fixedly arranged on fixed block 12 towards in the one side of sliding part 5.3 both ends of chin pressure pin are hinged on receipts by connecting rod 11
It puts on rollover stand 1, connecting rod 11 is welded on chin pressure pin 3, and the hinged place of connecting rod 11 and folding and unfolding rollover stand 1 is equipped with secondary tumble lock
Locking mechanism, secondary overturning lockable mechanism are similar to the overturning lockable mechanism structure.
It needs in use, pulling out and being unfolded folding and unfolding rollover stand 1, folding and unfolding rollover stand 1 is rotated around fixed rotating shaft 8, works as spring
Card bead be embedded in card slot 9 when, it is prevented that folding and unfolding rollover stand 1 continue to rotate and return, realize folding and unfolding rollover stand 1 tumble lock
Only, to make 1 holding position of folding and unfolding rollover stand.Equally, it is also converted to by folded state between chin pressure pin 3 and folding and unfolding rollover stand 1
Unfolded state, connecting rod 11 are overturn, by the secondary overturning locking machine when reaching an appropriate angle with 1 angle of folding and unfolding rollover stand
Structure locking, chin pressure pin 3 holds the chin of student at this time, and student is prevented to bow excessively, prevents eyes too close to books, forces
Student keeps correct sitting posture, plays the role of pre- myopia prevention.When not in use, can folding and unfolding rollover stand 1, connecting rod 11 be folded up and is pushed away
It returns, is hidden into entire folding and unfolding rollover stand 1 all under desktop 2 together with chassis 6, connecting rod 11 and chin pressure pin 3, provides openr
Desktop, it is otherwise utilized convenient for desk.
Embodiment 2:
The overturning lockable mechanism includes damping joint, and damping joint is connected between hinged seat 7 and folding and unfolding rollover stand 1.
The sliding part extreme position locking structure includes the sliding part bullet of sliding bearing card slot and embeddable sliding bearing card slot
Spring card bead, sliding bearing bayonet slot ring are set around on 4 circumferential surface of sliding bearing, and sliding part spring card bead is set to 5 both ends of sliding part.
It is hinged on folding and unfolding rollover stand 1 in the middle part of chin pressure pin 3 by connecting rod, and the hinged place of connecting rod and folding and unfolding rollover stand 1 is equipped with secondary
Lockable mechanism is overturn, secondary overturning lockable mechanism is similar to the overturning lockable mechanism structure.Remaining is the same as embodiment 1.
Embodiment 3:
As shown in Fig. 2, chin pressure pin 3 is directly welded in 1 free end of folding and unfolding rollover stand, i.e. cancellation connecting rod 11 and secondary is overturn
Lockable mechanism.Remaining is the same as embodiment 1.
Embodiment 4:
As shown in figure 3,1 free end of folding and unfolding rollover stand is equipped with open ports, sliding is equipped with telescopic joint 13 in open ports, stretches
Telescopic adjustment locking device is equipped between section 13 and folding and unfolding rollover stand 1, which includes being opened in folding and unfolding overturning
Kidney ellipsoid sliding slot on 1 lateral surface of frame and it is connected to the locking bolt on telescopic joint 13 through kidney ellipsoid sliding slot rear thread, screwed
When locking bolt, locking bolt compresses kidney ellipsoid sliding slot notch, and telescopic joint 13 is prevented to slide.Remaining is the same as embodiment 3.
Embodiment 5:
The carriage includes two pairs of sliding bearings 4, a pair of sliders 5 and a chassis 6, and sliding part 5 is cross section
For circular slide bar, two slide bars are arranged in parallel, and sliding bearing 4 is made of the linear bearing being adapted to slide bar, and linear bearing is solid
It is scheduled on 2 bottom of desktop, every sliding bar is worn to be connected on two linear bearings and be connected again with the welding of chassis 6 simultaneously.This implementation
Example cancels fixed block 12.1 free end of folding and unfolding rollover stand is equipped with open ports, and sliding is equipped with telescopic joint 13, telescopic joint in open ports
Telescopic adjustment locking device is equipped between 13 and folding and unfolding rollover stand 1, which includes being opened in folding and unfolding rollover stand 1
Kidney ellipsoid sliding slot on lateral surface and it is connected to the locking bolt on telescopic joint 13 through kidney ellipsoid sliding slot rear thread, screws locking
When bolt, locking bolt compresses kidney ellipsoid sliding slot notch, and telescopic joint 13 is prevented to slide.It is cut with scissors by connecting rod 11 at 3 both ends of chin pressure pin
It connects on telescopic joint 13.Remaining is the same as embodiment 2.
Embodiment 6:
The cross section of sliding bearing 4 is in inverted trapezoidal, and sliding part 5 is equipped with dovetail groove, and sliding bearing 4, sliding part 5 are suitable
It is slidably connected with chimeric formation, and all directions other than axial direction constitute positioning.Remaining is the same as embodiment 1.
Claims (10)
1. a kind of pre- myopia-prevention bracket, it is characterized in that including folding and unfolding rollover stand (1) and carriage, folding and unfolding rollover stand (1) passes through
Carriage is slidably connected to below desktop (2), and folding and unfolding rollover stand (1) end is hinged on carriage, folding and unfolding rollover stand
(1) free end is equipped with chin pressure pin (3), and the articulated section between folding and unfolding rollover stand (1) and carriage is equipped with overturning lockable mechanism.
2. pre- myopia-prevention bracket according to claim 1, it is characterized in that folding and unfolding rollover stand (1) free end is equipped with telescopic joint,
Nested encryptions are slided in telescopic joint and folding and unfolding rollover stand (1), and telescopic adjustment locking dress is equipped between telescopic joint and folding and unfolding rollover stand (1)
It sets.
3. pre- myopia-prevention bracket according to claim 1, it is characterized in that the carriage include sliding bearing (4),
Sliding part (5) and chassis (6), sliding bearing (4) are fixedly arranged on desktop (2) bottom surface, and sliding part (5) is slidably connected at sliding
It is connected, is installed on chassis (6) hinged seat (7), folding and unfolding rollover stand (1) end is hinged with chassis (6) again simultaneously on supporting member (4)
On hinged seat (7).
4. pre- myopia-prevention bracket according to claim 3, it is characterized in that the overturning lockable mechanism includes fixed rotating shaft
(8), the spring card bead of card slot (9) and embeddable card slot (9), fixed rotating shaft (8) are fixedly arranged on hinged seat (7), folding and unfolding rollover stand
(1) end rotation is socketed on fixed rotating shaft (8), and card slot (9) is set on fixed rotating shaft (8) circumferential surface, and spring card bead is set to folding and unfolding
In rollover stand (1) free end end face.
5. pre- myopia-prevention bracket according to claim 3, it is characterized in that the overturning lockable mechanism includes damping joint, resistance
Buddhist nun joint is connected between hinged seat (7) and folding and unfolding rollover stand (1).
6. pre- myopia-prevention bracket according to claim 3, it is characterized in that being installed on chassis (6) along folding and unfolding rollover stand
(1) the chest bar (10) that pull-out direction extends.
7. pre- myopia-prevention bracket according to claim 3, it is characterized in that sliding bearing (4) both ends are equipped with sliding part pole
Extreme position locking structure, the sliding part extreme position locking structure include the magnet block of fixed block and adsorbable sliding part (5),
Fixed block is fixedly arranged under desktop (2), and sliding bearing (4) both ends are fixedly arranged on fixed block, and magnet block is fixedly arranged on fixed block
Towards in the one side of sliding part (5).
8. pre- myopia-prevention bracket according to claim 3, it is characterized in that sliding bearing (4) both ends are equipped with sliding part pole
Extreme position locking structure, the sliding part extreme position locking structure include sliding bearing card slot and embeddable sliding bearing
The sliding part spring card bead of card slot, sliding bearing card slot are set on sliding bearing (4) bearing circumferential surface, sliding part spring card bead
Set on sliding part (5) both ends.
9. pre- myopia-prevention bracket according to any one of claim 1 to 8, it is characterized in that chin pressure pin (3) both ends pass through
Connecting rod is hinged on folding and unfolding rollover stand (1) free end, and the hinged place of connecting rod and folding and unfolding rollover stand (1) is equipped with secondary overturning locking machine
Structure.
10. pre- myopia-prevention bracket according to any one of claim 1 to 8, it is characterized in that passing through in the middle part of chin pressure pin (3)
Connecting rod is hinged on folding and unfolding rollover stand (1) free end, and the hinged place of connecting rod and folding and unfolding rollover stand (1) is equipped with secondary overturning locking machine
Structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720926396.1U CN208524120U (en) | 2017-07-27 | 2017-07-27 | A kind of pre- myopia-prevention bracket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720926396.1U CN208524120U (en) | 2017-07-27 | 2017-07-27 | A kind of pre- myopia-prevention bracket |
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| Publication Number | Publication Date |
|---|---|
| CN208524120U true CN208524120U (en) | 2019-02-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720926396.1U Active CN208524120U (en) | 2017-07-27 | 2017-07-27 | A kind of pre- myopia-prevention bracket |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113455841A (en) * | 2021-07-20 | 2021-10-01 | 江西智慧星实业有限公司 | School stool with function is stored to books |
| CN114027624A (en) * | 2021-11-04 | 2022-02-11 | 桃源县桃师附属小学 | Write neck limiting device who prevents pressing close to |
-
2017
- 2017-07-27 CN CN201720926396.1U patent/CN208524120U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113455841A (en) * | 2021-07-20 | 2021-10-01 | 江西智慧星实业有限公司 | School stool with function is stored to books |
| CN114027624A (en) * | 2021-11-04 | 2022-02-11 | 桃源县桃师附属小学 | Write neck limiting device who prevents pressing close to |
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