CN109330557A - One kind can wind ophthalmology visual chart - Google Patents
One kind can wind ophthalmology visual chart Download PDFInfo
- Publication number
- CN109330557A CN109330557A CN201811177432.4A CN201811177432A CN109330557A CN 109330557 A CN109330557 A CN 109330557A CN 201811177432 A CN201811177432 A CN 201811177432A CN 109330557 A CN109330557 A CN 109330557A
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- block
- visual chart
- winding
- ophthalmology visual
- ophthalmology
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- 230000000007 visual effect Effects 0.000 title claims abstract description 97
- 238000004804 winding Methods 0.000 claims abstract description 67
- 244000309464 bull Species 0.000 claims abstract description 44
- 239000000428 dust Substances 0.000 abstract description 8
- 238000013517 stratification Methods 0.000 abstract description 2
- 230000004438 eyesight Effects 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/02—Subjective types, i.e. testing apparatus requiring the active assistance of the patient
- A61B3/028—Subjective types, i.e. testing apparatus requiring the active assistance of the patient for testing visual acuity; for determination of refraction, e.g. phoropters
- A61B3/032—Devices for presenting test symbols or characters, e.g. test chart projectors
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/0075—Apparatus for testing the eyes; Instruments for examining the eyes provided with adjusting devices, e.g. operated by control lever
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- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Medical Informatics (AREA)
- Biophysics (AREA)
- Ophthalmology & Optometry (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Physics & Mathematics (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Eye Examination Apparatus (AREA)
- Thermotherapy And Cooling Therapy Devices (AREA)
Abstract
The present invention relates to a kind of ophthalmology visual charts more particularly to one kind can wind ophthalmology visual chart.Therefore, technical problem of the invention are as follows: surface area dust can be prevented, effectively wind ophthalmology visual chart to what ophthalmology visual chart ontology was protected and used by providing one kind.Technical solution: one kind can wind ophthalmology visual chart, include mounting blocks, upper hook, curved rod, lower draw-bar, winding block, inner cavity, bearing block, bull stick, winding wheel, connecting rod etc.；The right upper portion of metope is connected with mounting blocks, and upper hook is connected on the right side of mounting blocks, and the right upper portion of metope is connected with curved rod, and curved rod is located at the top of mounting blocks, and the lower section right part of curved rod is also connected with upper hook.The present invention is hung over the present invention in two upper hooks by two lower draw-bars, then holds handle and invert bull stick and snap ring, to release ophthalmology visual chart ontology, bull stick is rotated forward when not in use and withdraws ophthalmology visual chart ontology, can so prevent ophthalmology visual chart body surface dust stratification dirt.
Description
Technical field
The present invention relates to a kind of ophthalmology visual charts more particularly to one kind can wind ophthalmology visual chart.
Background technique
When many Ren Qu hospitals carry out eye test, hospital is all the eyesight for checking people by ophthalmology visual chart, now
It is usually that ophthalmology visual chart is viscous on the wall, the eyes of examinee are then blocked, then examinee are allowed to identify
The symbol of ophthalmology visual chart judges the vision condition of examinee, but the rear surface that ophthalmology visual chart has glued long on the wall is held
Dust is tended to have, causes the symbol on ophthalmology visual chart unintelligible, the inspection to affect vision, and be easy with there is moisture in air by eye
Section's visual chart is got wet.
Summary of the invention
In order to which the rear surface for overcoming ophthalmology visual chart to glue long on the wall has been easy dust, lead to the symbol on ophthalmology visual chart
It is number unintelligible, and the shortcomings that getting ophthalmology visual chart wet, therefore, technical problem of the invention are easy with there is moisture in air are as follows:
One kind is provided and can prevent surface area dust, effectively winds ophthalmology view to what ophthalmology visual chart ontology was protected and used
Power table.
Technical solution: one kind can wind ophthalmology visual chart, include mounting blocks, upper hook, curved rod, lower draw-bar, winding
Block, inner cavity, bearing block, bull stick, winding wheel, connecting rod, ophthalmology visual chart ontology, the first fixture block, the first link block, snap ring, guiding
Block, spring, pull ring, mobile bar, the second fixture block and handle, the right upper portion of metope are connected with mounting blocks, connect on the right side of mounting blocks
It is connected to upper hook, the right upper portion of metope is connected with curved rod, and curved rod is located at the top of mounting blocks, the lower section right part of curved rod
Also it is connected with upper hook, lower draw-bar is combined in two upper hooks, the bottom end of left side lower draw-bar is connected with winding block, winds block
It is inside provided with inner cavity, bearing block is installed on the winding block in the middle part of inner cavity, interference is connected with bull stick in bearing block, and bull stick front passes through
Wind middle part on front side of block, connection is connected with winding wheel there are four connecting rod between the rear side of four connecting rods on bull stick, on winding wheel around
There is ophthalmology visual chart ontology, ophthalmology visual chart ontology passes through winding block, and the left and right sides bottom of winding wheel is provided with the first card slot,
Winding wheel bottom is equipped with the first link block, is respectively connected with the first fixture block at left and right sides of the top of the first link block, the first fixture block with
The cooperation of first card slot, the first link block can block one end of ophthalmology visual chart ontology, snap ring is connected on bull stick, snap ring is located at
The front side of four connecting rods is provided with multiple second card slots on snap ring, and the right part for winding block is equipped with guide pad, and guide pad inner sliding type connects
It is connected to mobile bar, mobile bar passes through guide pad, and the right end of mobile bar is connected with pull ring, two and winding block above and below the left side of pull ring
Between be respectively connected with spring, the left end of mobile bar is connected with the second fixture block, and the second fixture block and the second card slot cooperate, connect on front side of bull stick
It is connected to handle, handle is located at the front side of winding block.
Furthermore, it is therefore particularly preferred that it further include having the second link block, circular block, third fixture block, strip block and handle,
The second link block is respectively connected in two upper hooks, the second link block is located at the rear side of lower draw-bar, lower draw-bar and the second link block
Contact, the second link block up and down two be respectively connected with circular block, long clamp bar slot is provided on circular block, is combined in long clamp bar slot
Third fixture block is connected with strip block between two third fixture blocks, is connected with handle on strip block.
Furthermore, it is therefore particularly preferred that it further include having the first block, the first magnetic patch, pull rod, arc magnetic patch and flexible clamp piece,
The bottom left of winding block is provided with third groove, is equipped with the first block, the inner top and first gear of third groove in third groove
The top of block is respectively connected with the first magnetic patch, and two the first magnetic patch cooperate, and the top of the first block is provided with through-hole, and through-hole is located at
The lower section of first magnetic patch, through-hole inner sliding type are connected with pull rod, and pull rod passes through through-hole and third groove, and the right end of pull rod is connected with
Arc magnetic patch is provided with arc-shaped slot on the winding block on the right side of third groove, and arc-shaped slot and arc magnetic patch cooperate, the first block
Flexible clamp piece is respectively connected at left and right sides of bottom, the bottom of ophthalmology visual chart ontology is located between two flexible clamp pieces.
When needing using the present invention, user is hung over the present invention in two upper hooks by two lower draw-bars, is then held
Firmly pull ring and mobile bar is pulled to the right, two springs are stretched, so that the second fixture block is detached from the second card slot, user is held at this time
Firmly handle and bull stick and snap ring being inverted, bull stick reversion drives four connecting rods reversions, and four connecting rods reversions drive winding wheels reversion, from
And ophthalmology visual chart ontology is released, after ophthalmology visual chart ontology is released to appropriate degree, user no longer holds pull ring, at two
Under the action of spring, mobile bar and the second fixture block reset to the left, and the second fixture block is caught in the second card slot corresponding thereto, fixed
The position of ophthalmology visual chart ontology can so prevent ophthalmology visual chart ontology is viscous to have many dusts on the wall, cause above
Symbol it is unintelligible, after the completion of user's use, user holds pull ring and pulls mobile bar to the right, and two springs are stretched, from
And the second fixture block is made to be detached from the second card slot, user holds handle and rotates forward bull stick and snap ring at this time, and bull stick, which rotates forward, drives four
Connecting rod rotates forward, and four connecting rods, which rotate forward, drives winding wheel to rotate forward, to withdraw ophthalmology visual chart ontology, can so prevent dust from inhaling
It is attached to ophthalmology visual chart body surface, after ophthalmology visual chart ontology is recovered to appropriate degree, user no longer holds pull ring, two
Under the action of a spring, mobile bar and the second fixture block reset to the left, and the second fixture block is caught in the second card slot corresponding thereto, Gu
Determine the position of ophthalmology visual chart ontology, so can be easy to use and protect ophthalmology visual chart ontology.
When two lower draw-bars are placed in two upper hooks by user, user is divided two third fixture blocks by strip block
Do not cooperate with upper and lower two long clamp bar slot, so that strip block fixes lower draw-bar, prevent lower draw-bar from moving left and right in upper hook,
Cause ophthalmology visual chart ontology to shake, interferes user to use ophthalmology visual chart ontology, when user has used ophthalmology visual chart ontology
Afterwards, user holds handle and is detached from upper and lower two third fixture blocks out of upper and lower two long clamp bar slots.So that strip block is not
Lower draw-bar is fixed again, and ophthalmology visual chart ontology can be packed up, then winding block is removed by subsequent user.
First block is fixed in groove by user by the cooperation of two the first magnetic patch, and subsequent user passes through pull rod logical
Hole is simultaneously caught in arc magnetic patch in arc-shaped slot, can so further fix the first block, and subsequent user regards ophthalmology
Power table ontology is released, and then the bottom of ophthalmology visual chart ontology is placed between two flexible clamp pieces and is blocked, can so be prevented
Only ophthalmology visual chart ontology double swerve, after user has used ophthalmology visual chart ontology, by the bottom of ophthalmology visual chart ontology
It is placed between two flexible clamp pieces and takes out, then pull rod is pulled out through-hole to the left and arc magnetic patch is made to be detached from arc card by user
Slot, user can remove first gear block at this time, and subsequent user withdraws ophthalmology visual chart ontology.
It has the beneficial effect that the present invention is hung over the present invention in two upper hooks by two lower draw-bars, then holds handle
And bull stick and snap ring are inverted, to release ophthalmology visual chart ontology, bull stick is rotated forward when not in use and withdraws ophthalmology visual chart ontology,
Can so prevent ophthalmology visual chart body surface dust stratification dirt, user by strip block by two third fixture blocks respectively and up and down
Two third groove cooperations prevent lower draw-bar from moving left and right in upper hook, lead to ophthalmology so that strip block fixes lower draw-bar
Visual chart ontology shakes, and the bottom of ophthalmology visual chart ontology is blocked by two flexible clamp pieces, prevents ophthalmology visual chart ontology left
Right shaking so effectively can be protected and be used to ophthalmology visual chart ontology.
Detailed description of the invention
Fig. 1 is schematic view of the front view of the invention.
Fig. 2 is enlarged schematic partial view of the invention.
Fig. 3 is the enlarged diagram of A of the present invention.
Fig. 4 is the enlarged diagram of B of the present invention.
In figure: 1. metopes, 2. mounting blocks, 3. upper hooks, 4. curved rods, 5. lower draw-bars, 6. winding blocks, 7. inner cavities, 8.
Bearing block, 9. bull sticks, 10. winding wheels, 11. connecting rods, 12. ophthalmology visual chart ontologies, 13. first card slots, 14. first fixture blocks, 15.
First link block, 16. snap rings, 17. second card slots, 18. guide pads, 19. springs, 20. pull rings, 21. mobile bars, 22. second cards
Block, 23. handles, 24. second link blocks, 25. circular blocks, 26. long clamp bar slots, 27. third fixture blocks, 28. strip blocks, 29.
Hand, 30. third grooves, 31. first blocks, 32. first magnetic patch, 33. through-holes, 34. pull rods, 35. arc-shaped slots, 36. arc magnetic
Block, 37. flexible clamp pieces.
Specific embodiment
The optimal technical scheme that the invention will now be described in detail with reference to the accompanying drawings.
Embodiment 1
One kind can wind ophthalmology visual chart, as shown in Figs 1-4, include mounting blocks 2, upper hook 3, curved rod 4, lower draw-bar 5, receive
Roll up block 6, inner cavity 7, bearing block 8, bull stick 9, winding wheel 10, connecting rod 11, ophthalmology visual chart ontology 12, the first fixture block 14, first company
Connect block 15, snap ring 16, guide pad 18, spring 19, pull ring 20, mobile bar 21, the second fixture block 22 and handle 23, the right side of metope 1
Top is connected with mounting blocks 2, and the right side of mounting blocks 2 is connected with upper hook 3, and the right upper portion of metope 1 is connected with curved rod 4, arc
Shape bar 4 is located at the top of mounting blocks 2, and the lower section right part of curved rod 4 is also connected with upper hook 3, is combined in two upper hooks 3
Lower draw-bar 5, the bottom end of left side lower draw-bar 5 are connected with winding block 6, wind and are provided with inner cavity 7 in block 6, the winding block 6 at 7 middle part of inner cavity
On bearing block 8 is installed, interference is connected with bull stick 9 in bearing block 8, and 9 front of bull stick passes through 6 front side middle part of winding block, on bull stick 9
Connection is connected with winding wheel 10 between the rear side of four connecting rods 11, ophthalmology visual chart is wound on winding wheel 10 there are four connecting rod 11
Ontology 12, ophthalmology visual chart ontology 12 pass through winding block 6, and the left and right sides bottom of winding wheel 10 is provided with the first card slot 13, receive
10 bottom of rolling wheel is equipped with the first link block 15, is respectively connected with the first fixture block 14 at left and right sides of the top of the first link block 15, and first
Fixture block 14 and the first card slot 13 cooperate, and one end of ophthalmology visual chart ontology 12 can be blocked, be connected on bull stick 9 by the first link block 15
There is snap ring 16, snap ring 16 is located at the front side of four connecting rods 11, and multiple second card slots 17 are provided on snap ring 16, winds the right part of block 6
Equipped with guide pad 18,18 inner sliding type of guide pad is connected with mobile bar 21, and mobile bar 21 passes through guide pad 18, the right side of mobile bar 21
End is connected with pull ring 20, and the left side of pull ring 20 is respectively connected with spring 19, the left end of mobile bar 21 between two and winding block 6 up and down
It is connected with the second fixture block 22, the second fixture block 22 and the second card slot 17 cooperate, and are connected with handle 23 on front side of bull stick 9, handle 23 is located at
Wind the front side of block 6.
Embodiment 2
One kind can wind ophthalmology visual chart, as shown in Figs 1-4, include mounting blocks 2, upper hook 3, curved rod 4, lower draw-bar 5, receive
Roll up block 6, inner cavity 7, bearing block 8, bull stick 9, winding wheel 10, connecting rod 11, ophthalmology visual chart ontology 12, the first fixture block 14, first company
Connect block 15, snap ring 16, guide pad 18, spring 19, pull ring 20, mobile bar 21, the second fixture block 22 and handle 23, the right side of metope 1
Top is connected with mounting blocks 2, and the right side of mounting blocks 2 is connected with upper hook 3, and the right upper portion of metope 1 is connected with curved rod 4, arc
Shape bar 4 is located at the top of mounting blocks 2, and the lower section right part of curved rod 4 is also connected with upper hook 3, is combined in two upper hooks 3
Lower draw-bar 5, the bottom end of left side lower draw-bar 5 are connected with winding block 6, wind and are provided with inner cavity 7 in block 6, the winding block 6 at 7 middle part of inner cavity
On bearing block 8 is installed, interference is connected with bull stick 9 in bearing block 8, and 9 front of bull stick passes through 6 front side middle part of winding block, on bull stick 9
Connection is connected with winding wheel 10 between the rear side of four connecting rods 11, ophthalmology visual chart is wound on winding wheel 10 there are four connecting rod 11
Ontology 12, ophthalmology visual chart ontology 12 pass through winding block 6, and the left and right sides bottom of winding wheel 10 is provided with the first card slot 13, receive
10 bottom of rolling wheel is equipped with the first link block 15, is respectively connected with the first fixture block 14 at left and right sides of the top of the first link block 15, and first
Fixture block 14 and the first card slot 13 cooperate, and one end of ophthalmology visual chart ontology 12 can be blocked, be connected on bull stick 9 by the first link block 15
There is snap ring 16, snap ring 16 is located at the front side of four connecting rods 11, and multiple second card slots 17 are provided on snap ring 16, winds the right part of block 6
Equipped with guide pad 18,18 inner sliding type of guide pad is connected with mobile bar 21, and mobile bar 21 passes through guide pad 18, the right side of mobile bar 21
End is connected with pull ring 20, and the left side of pull ring 20 is respectively connected with spring 19, the left end of mobile bar 21 between two and winding block 6 up and down
It is connected with the second fixture block 22, the second fixture block 22 and the second card slot 17 cooperate, and are connected with handle 23 on front side of bull stick 9, handle 23 is located at
Wind the front side of block 6.
It further include having the second link block 24, circular block 25, third fixture block 27, strip block 28 and handle 29, two upper extensions
The second link block 24 is respectively connected on hook 3, the second link block 24 is located at the rear side of lower draw-bar 5, lower draw-bar 5 and the second link block 24
Contact, the second link block 24 up and down two be respectively connected with circular block 25, long clamp bar slot 26, long clamp bar slot are provided on circular block 25
It is combined with third fixture block 27 in 26, strip block 28 is connected between two third fixture blocks 27, is connected with handle on strip block 28
Hand 29.
Embodiment 3
One kind can wind ophthalmology visual chart, as shown in Figs 1-4, include mounting blocks 2, upper hook 3, curved rod 4, lower draw-bar 5, receive
Roll up block 6, inner cavity 7, bearing block 8, bull stick 9, winding wheel 10, connecting rod 11, ophthalmology visual chart ontology 12, the first fixture block 14, first company
Connect block 15, snap ring 16, guide pad 18, spring 19, pull ring 20, mobile bar 21, the second fixture block 22 and handle 23, the right side of metope 1
Top is connected with mounting blocks 2, and the right side of mounting blocks 2 is connected with upper hook 3, and the right upper portion of metope 1 is connected with curved rod 4, arc
Shape bar 4 is located at the top of mounting blocks 2, and the lower section right part of curved rod 4 is also connected with upper hook 3, is combined in two upper hooks 3
Lower draw-bar 5, the bottom end of left side lower draw-bar 5 are connected with winding block 6, wind and are provided with inner cavity 7 in block 6, the winding block 6 at 7 middle part of inner cavity
On bearing block 8 is installed, interference is connected with bull stick 9 in bearing block 8, and 9 front of bull stick passes through 6 front side middle part of winding block, on bull stick 9
Connection is connected with winding wheel 10 between the rear side of four connecting rods 11, ophthalmology visual chart is wound on winding wheel 10 there are four connecting rod 11
Ontology 12, ophthalmology visual chart ontology 12 pass through winding block 6, and the left and right sides bottom of winding wheel 10 is provided with the first card slot 13, receive
10 bottom of rolling wheel is equipped with the first link block 15, is respectively connected with the first fixture block 14 at left and right sides of the top of the first link block 15, and first
Fixture block 14 and the first card slot 13 cooperate, and one end of ophthalmology visual chart ontology 12 can be blocked, be connected on bull stick 9 by the first link block 15
There is snap ring 16, snap ring 16 is located at the front side of four connecting rods 11, and multiple second card slots 17 are provided on snap ring 16, winds the right part of block 6
Equipped with guide pad 18,18 inner sliding type of guide pad is connected with mobile bar 21, and mobile bar 21 passes through guide pad 18, the right side of mobile bar 21
End is connected with pull ring 20, and the left side of pull ring 20 is respectively connected with spring 19, the left end of mobile bar 21 between two and winding block 6 up and down
It is connected with the second fixture block 22, the second fixture block 22 and the second card slot 17 cooperate, and are connected with handle 23 on front side of bull stick 9, handle 23 is located at
Wind the front side of block 6.
It further include having the second link block 24, circular block 25, third fixture block 27, strip block 28 and handle 29, two upper extensions
The second link block 24 is respectively connected on hook 3, the second link block 24 is located at the rear side of lower draw-bar 5, lower draw-bar 5 and the second link block 24
Contact, the second link block 24 up and down two be respectively connected with circular block 25, long clamp bar slot 26, long clamp bar slot are provided on circular block 25
It is combined with third fixture block 27 in 26, strip block 28 is connected between two third fixture blocks 27, is connected with handle on strip block 28
Hand 29.
It further include having the first block 31, the first magnetic patch 32, pull rod 34, arc magnetic patch 36 and flexible clamp piece 37, winding block 6
Bottom left is provided with third groove 30, is equipped with the first block 31, the inner top and first gear of third groove 30 in third groove 30
The top of block 31 is respectively connected with the first magnetic patch 32, and two the first magnetic patch 32 cooperate, and the top of the first block 31 is provided with through-hole
33, through-hole 33 is located at the lower section of the first magnetic patch 32, and 33 inner sliding type of through-hole is connected with pull rod 34, and pull rod 34 passes through through-hole 33 and the
Three grooves 30, the right end of pull rod 34 are connected with arc magnetic patch 36, are provided with arc-shaped slot on the winding block 6 on 30 right side of third groove
35, arc-shaped slot 35 and arc magnetic patch 36 cooperate, and are respectively connected with flexible clamp piece 37, ophthalmology at left and right sides of the bottom of the first block 31
The bottom of visual chart ontology 12 is located between two flexible clamp pieces 37.
When needing using the present invention, user is hung over the present invention in two upper hooks 3 by two lower draw-bars 5, then
It holds pull ring 20 and pulls mobile bar 21 to the right, two springs 19 are stretched, so that the second fixture block 22 is detached from the second card slot
17, user holds handle 23 and inverts bull stick 9 and snap ring 16 at this time, and the reversion of bull stick 9 drives four connecting rods 11 to invert, four connecting rods
11 reversions drive winding wheel 10 to invert, so that ophthalmology visual chart ontology 12 is released, when ophthalmology visual chart ontology 12 is released to suitably
After degree, user no longer holds pull ring 20, and under the action of two spring 19, mobile bar 21 and the second fixture block 22 reset to the left,
Second fixture block 22 is caught in the second card slot 17 corresponding thereto, and the position of fixed ophthalmology visual chart ontology 12 can so prevent
Only ophthalmology visual chart ontology 12 is viscous has many dusts on the wall, causes symbol above unintelligible, after the completion of user's use,
User holds pull ring 20 and pulls mobile bar 21 to the right, and two springs 19 are stretched, so that the second fixture block 22 is detached from second
Card slot 17, user holds handle 23 and rotates forward bull stick 9 and snap ring 16 at this time, and bull stick 9, which rotates forward, drives four connecting rods 11 to rotate forward, and four
Connecting rod 11, which rotates forward, drives winding wheel 10 to rotate forward, to withdraw ophthalmology visual chart ontology 12, can so dust be prevented to be adsorbed on eye
12 surface of section's visual chart ontology, after ophthalmology visual chart ontology 12 is recovered to appropriate degree, user no longer holds pull ring 20, two
Under the action of a spring 19, mobile bar 21 and the second fixture block 22 reset to the left, and the second fixture block 22 is caught in second corresponding thereto
In card slot 17, the position of fixed ophthalmology visual chart ontology 12 so can be easy to use and protect ophthalmology visual chart ontology 12.
When two lower draw-bars 5 are placed in two upper hooks 3 by user, user passes through strip block 28 for two third cards
Block 27 cooperates with upper and lower two long clamp bar slot 26 respectively, so that strip block 28 fixes lower draw-bar 5, prevents lower draw-bar 5 in upper extension
It is moved left and right on hook 3, ophthalmology visual chart ontology 12 is caused to shake, interfere user to use ophthalmology visual chart ontology 12, when user makes
After being finished ophthalmology visual chart ontology 12, user holds handle 29 for upper and lower two third fixture blocks 27 from upper and lower two long clamp bar slots 26
Interior disengaging.So that strip block 28 no longer fixes lower draw-bar 5, subsequent user can pack up ophthalmology visual chart ontology 12,
Then winding block 6 is removed.
First block 31 is fixed in groove by user by the cooperations of two the first magnetic patch 32, and subsequent user is by pull rod 34
Across through-hole 33 and arc magnetic patch 36 is caught in arc-shaped slot 35, can so further fix the first block 31, with
User releases ophthalmology visual chart ontology 12 afterwards, and the bottom of ophthalmology visual chart ontology 12 is then placed in two flexible clamp pieces 37
Between block, can so prevent 12 double swerve of ophthalmology visual chart ontology, after user has used ophthalmology visual chart ontology 12,
The bottom of ophthalmology visual chart ontology 12 is placed between two flexible clamp pieces 37 and is taken out, then user pulls out pull rod 34 to the left
Through-hole 33 simultaneously makes arc magnetic patch 36 be detached from arc-shaped slot 35, and user can remove first gear block 31 at this time, and subsequent user is by ophthalmology
Visual chart ontology 12 is withdrawn.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention rather than protects to the present invention
The limitation of range is protected, although the invention is described in detail with reference to the preferred embodiments, those skilled in the art should
Understand, it can be with modification or equivalent replacement of the technical solution of the present invention are made, without departing from the essence of technical solution of the present invention
And range.
Claims (3)
- It include mounting blocks, upper hook, curved rod, lower draw-bar, winding block, inner cavity, bearing 1. one kind can wind ophthalmology visual chart Seat and bull stick, the right upper portion of metope are connected with mounting blocks, and upper hook is connected on the right side of mounting blocks, and the right upper portion of metope connects It is connected to curved rod, curved rod is located at the top of mounting blocks, and the lower section right part of curved rod is also connected with upper hook, in two upper hooks It is combined with lower draw-bar, the bottom end of left side lower draw-bar is connected with winding block, and it winds in block and is provided with inner cavity, the winding block in the middle part of inner cavity On bearing block is installed, interference is connected with bull stick in bearing block, and bull stick front passes through middle part on front side of winding block, it is characterized in that: also It include winding wheel, connecting rod, ophthalmology visual chart ontology, the first fixture block, the first link block, snap ring, guide pad, spring, pull ring, shifting Lever, the second fixture block and handle, connection is connected with winding wheel between the rear side of four connecting rods, winds there are four connecting rod on bull stick It is wound with ophthalmology visual chart ontology on wheel, ophthalmology visual chart ontology passes through winding block, and the left and right sides bottom of winding wheel is provided with the One card slot, winding wheel bottom are equipped with the first link block, are respectively connected with the first fixture block at left and right sides of the top of the first link block, and first Fixture block and the first card slot cooperate, and the first link block can block one end of ophthalmology visual chart ontology, and snap ring is connected on bull stick, block Ring is located at the front side of four connecting rods, is provided with multiple second card slots on snap ring, and the right part for winding block is equipped with guide pad, slides in guide pad Dynamic formula is connected with mobile bar, and mobile bar passes through guide pad, and the right end of mobile bar is connected with pull ring, the left side of pull ring up and down two with Spring is respectively connected between winding block, the left end of mobile bar is connected with the second fixture block, and the second fixture block and the second card slot cooperate, bull stick Front side is connected with handle, and handle is located at the front side of winding block.
- 2. one kind as described in claim 1 can wind ophthalmology visual chart, it is characterized in that: further including having the second link block, circle Block, third fixture block, strip block and handle are respectively connected with the second link block in two upper hooks, and the second link block is located at lower extension The rear side of hook, lower draw-bar are contacted with the second link block, the second link block up and down two be respectively connected with circular block, opened on circular block There is long clamp bar slot, third fixture block is combined in long clamp bar slot, be connected with strip block between two third fixture blocks, on strip block It is connected with handle.
- 3. one kind as claimed in claim 2 can wind ophthalmology visual chart, it is characterized in that: further including having the first block, the first magnetic Block, pull rod, arc magnetic patch and flexible clamp piece, the bottom left for winding block are provided with third groove, are equipped with first gear in third groove The top of block, the inner top of third groove and the first block is respectively connected with the first magnetic patch, and two the first magnetic patch cooperate, and first The top of block is provided with through-hole, and through-hole is located at the lower section of the first magnetic patch, and through-hole inner sliding type is connected with pull rod, and pull rod passes through through-hole With third groove, the right end of pull rod is connected with arc magnetic patch, and arc-shaped slot, arc card are provided on the winding block on the right side of third groove Slot and arc magnetic patch cooperate, and are respectively connected with flexible clamp piece, the bottom of ophthalmology visual chart ontology at left and right sides of the bottom of the first block Between two flexible clamp pieces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811177432.4A CN109330557B (en) | 2018-10-10 | 2018-10-10 | Eye chart capable of being rolled up |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811177432.4A CN109330557B (en) | 2018-10-10 | 2018-10-10 | Eye chart capable of being rolled up |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109330557A true CN109330557A (en) | 2019-02-15 |
| CN109330557B CN109330557B (en) | 2020-12-29 |
Family
ID=65309361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201811177432.4A Active CN109330557B (en) | 2018-10-10 | 2018-10-10 | Eye chart capable of being rolled up |
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Citations (6)
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| CN2521365Y (en) * | 2001-10-30 | 2002-11-20 | 丽方企业股份有限公司 | Shutter with rope-rolling device |
| CN201075936Y (en) * | 2007-08-08 | 2008-06-25 | 南京跃丰五金制品有限公司 | Pet handle pulling reel |
| US20110037950A1 (en) * | 2009-08-17 | 2011-02-17 | Allan N. Hytowitz | Animated image vision test |
| CN204445822U (en) * | 2015-01-16 | 2015-07-08 | 中国人民解放军第八十八医院 | A kind of Scroll Vission detector |
| CN205778447U (en) * | 2016-05-24 | 2016-12-07 | 昆明理工大学 | A kind of automatic curtain rolling device |
| CN206209278U (en) * | 2016-11-28 | 2017-05-31 | 柳立言 | A kind of computer projection screen being convenient to clean |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2521365Y (en) * | 2001-10-30 | 2002-11-20 | 丽方企业股份有限公司 | Shutter with rope-rolling device |
| CN201075936Y (en) * | 2007-08-08 | 2008-06-25 | 南京跃丰五金制品有限公司 | Pet handle pulling reel |
| US20110037950A1 (en) * | 2009-08-17 | 2011-02-17 | Allan N. Hytowitz | Animated image vision test |
| CN204445822U (en) * | 2015-01-16 | 2015-07-08 | 中国人民解放军第八十八医院 | A kind of Scroll Vission detector |
| CN205778447U (en) * | 2016-05-24 | 2016-12-07 | 昆明理工大学 | A kind of automatic curtain rolling device |
| CN206209278U (en) * | 2016-11-28 | 2017-05-31 | 柳立言 | A kind of computer projection screen being convenient to clean |
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| CN109330557B (en) | 2020-12-29 |
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