CN109199318A - A kind of ophthalmology visual testing chart - Google Patents
A kind of ophthalmology visual testing chart Download PDFInfo
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- CN109199318A CN109199318A CN201811143978.8A CN201811143978A CN109199318A CN 109199318 A CN109199318 A CN 109199318A CN 201811143978 A CN201811143978 A CN 201811143978A CN 109199318 A CN109199318 A CN 109199318A
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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
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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
- A61B3/0075—Apparatus for testing the eyes; Instruments for examining the eyes provided with adjusting devices, e.g. operated by control lever
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- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
- Eye Examination Apparatus (AREA)
Abstract
The present invention relates to a kind of test table more particularly to a kind of ophthalmology visual testing charts.Therefore, technical problem of the invention is: providing a kind of ophthalmology visual testing chart for enabling to patient to see symbol and good test effect clearly.Implementer's case of the invention are as follows: a kind of ophthalmology visual testing chart includes lower supporter, u-bracket, first bearing, the first shaft, the first spool, second bearing, the second shaft, the second spool, the first rocker arm, visual chart etc.；U-bracket is connected at the top of lower supporter, the left and right sides in u-bracket is provided with sliding slot, and left side sliding slot left wall and right side sliding slot right wall are uniformly provided with multiple grooves, and the left and right sides lower part of u-bracket is mounted on first bearing.The present invention holds the first rocker arm and forward or reverse the second shaft by medical staff, second shaft drives the second spool forward or reverse forward or reverse, to drive visual chart to rotate, so that the symbol size that patient sees out of instrument connection is different, to test the eyesight of patient.
Description
Technical field
The present invention relates to a kind of test table more particularly to a kind of ophthalmology visual testing charts.
Background technique
People are feeling the inspection that can generally go to hospital to do an eyesight when having defective vision, and present hospital is usually to use
Visual chart tests the eyesight of patient, and the medical staff of usually hospital holds the symbol that a rod points on visual chart and allows trouble
Person's identification, the eyesight of patient is tested with this, but point to symbol with rod and patient is allowed to recognize, the patient of low vision may see not
Which symbol clear medical staff refers to rod, causes to recognize mistake, and test effect is also bad.
Summary of the invention
Which symbol referred to rod in order to overcome the patient of low vision that may not see medical staff, causes to recognize
Mistake, and test effect also bad disadvantage, therefore, technical problem of the invention is: providing one kind and patient is enabled to see clearly
The ophthalmology visual testing chart of symbol and good test effect.
Implementer's case of the invention are as follows: a kind of ophthalmology visual testing chart includes lower supporter, u-bracket, first axle
It holds, the first shaft, the first spool, second bearing, the second shaft, the second spool, the first rocker arm, visual chart, sliding block, spring, card
Block, driving lever, guide rod and guide plate are connected with u-bracket at the top of lower supporter, and the left and right sides in u-bracket is provided with sliding slot, left
Side chute left wall and right side sliding slot right wall are uniformly provided with multiple grooves, and the left and right sides lower part of u-bracket is mounted on first
Bearing, interference is connected with the first shaft in first bearing, and the first spool, the left and right sides of u-bracket are connected on the first shaft
Top is mounted on second bearing, and interference is connected with the second shaft in second bearing, and the second spool is connected on the second shaft, the
The right end of two shaft lever is connected with the first rocker arm, is wound with visual chart between the first spool and the second spool, on the sliding slot of the left and right sides
Slidingtype is connected with sliding block, and the outer middle side part of left and right sides sliding block is provided with circular groove, and the forward exterior of left and right sides sliding block is opened
There is guide groove, guide groove is communicated with circular groove, and circular groove inner sliding type is connected with fixture block, and driving lever is connected on fixture block, and driving lever passes through circle
Slot is connected with spring between fixture block and sliding block, spring is located in guide groove, guide rod there are two connections between the sliding block of the left and right sides,
The upper slidingtype of two guide rods is connected with guide plate, guide plate up and down two be provided with pilot hole, guide rod passes through pilot hole, guide plate
Middle part is provided with instrument connection.
It in a preferred embodiment of the present invention, further include having mounting plate, rolling wheel, turning handle, Zuo Lasheng, right drawstring, first
Pulley and second pulley are connected with mounting plate at the top of top guide bar, and rotary type is equipped with rolling wheel on mounting plate, is connected on rolling wheel
Turning handle, rotary type is connected with first pulley and second pulley on the sliding block of the left and right sides, and Zola's rope and right is wound on reel
Drawstring, Zola's rope successively around left side second pulley and first pulley and left driving lever connect, right drawstring successively bypass on the right side of the
Two pulleys and first pulley are simultaneously connect with right side driving lever.
It in a preferred embodiment of the present invention, further include having perpendicular supporting plate, third pulley, the 4th pulley, wirerope, connection
Folder and the second rocker arm, the bottom of left and right sides sliding block are respectively connected with perpendicular supporting plate, and it is sliding to be connected with third for rotary type on the perpendicular supporting plate in left side
Wheel, right side erect rotary type on supporting plate and are connected with the 4th pulley, and the bottom of guide plate is connected with connection folder, third pulley and the 4th pulley
On be wound with wirerope, wirerope with connect folder connection, be connected with the second rocker arm on the 4th pulley.
It in a preferred embodiment of the present invention, further include having left hole plate, right hole plate and brush stroke, an interior left side for u-bracket
Right two side lower parts are connected separately with left hole plate and right hole plate, and rotary type is connected with brush stroke between left hole plate and right hole plate.
When needing using the present invention, medical staff first holds the first rocker arm the second shaft forward or reverse, to drive
Visual chart rotation, the symbol size that so patient can be made to see out of instrument connection is different, to test the eyesight of patient, doctor
Shield personnel can hold the driving lever of the left and right sides and pull in opposite directions, and the driving lever of the left and right sides moves towards the fixture block for driving the left and right sides
It moves towards, the spring of the left and right sides is compressed, so that the fixture block of the left and right sides is detached from the groove of the left and right sides, is cured at this time
Shield personnel can move up or down two guide rods by the sliding block of the left and right sides, and two guide rods move up or down drive and lead
Plate moves up or down, and the position of instrument connection can be so adjusted according to the height of patient, preferably tests patient's vision, when
Medical staff adjusts the position of instrument connection to after appropriate location, and medical staff no longer holds the driving lever of the left and right sides, in left and right
Under the action of spring, left and right sides driving lever and fixture block reset, and fixture block is caught in card slot corresponding thereto, the position of resting guide
It sets.
Medical staff can rotate forward turning handle and rolling wheel is driven to rotate forward, and drive the driving lever of the left and right sides simultaneously by Zola's rope and right drawstring
Opposite to pull, first pulley and second pulley play the guiding role, and the driving lever of the left and right sides moves towards the card for driving the left and right sides
Block moves towards, and the spring of the left and right sides is compressed, so that the fixture block of the left and right sides is detached from the groove of the left and right sides, at this time
Medical staff can move up or down two guide rods by the sliding block of the left and right sides, and two guide rods move up or down drive
Guide plate moves up or down, and the position of instrument connection can be so adjusted according to the height of patient, preferably tests patient's vision,
After medical staff adjusts the position of instrument connection to appropriate location, medical staff inverts turning handle and drives rolling wheel reversion, Zuo Lasheng
Be released with right drawstring, first pulley and second pulley play the guiding role, in left and right under the action of spring, left and right sides driving lever and
Fixture block resets, and fixture block is caught in card slot corresponding thereto, the position of resting guide, adjusting guide plate that so can be more convenient
Position.
Medical staff holds the second rocker arm and rotates forward, and the second rocker arm, which rotates forward, drives third pulley to rotate forward, and is drawn by wirerope
Dynamic connection folder moves right, and third pulley play the guiding role, and connection folder, which moves right, drives guide plate to move right, and works as medical staff
It holds the second rocker arm and inverts, the reversion of the second rocker arm drives the reversion of third pulley, and pull connection folder to be moved to the left by wirerope,
Third pulley play the guiding role, and connection folder, which is moved to the left, drives guide plate to be moved to the left, and so patient can be made to see symbol not
Same direction, increases the effect of test.
Medical staff holds the first rocker arm and forward or reverse the second shaft, and the second shaft drives volume Two forward or reverse
Forward or reverse, so that visual chart be driven to rotate, brush stroke cleans visual chart to axis, prevents visual chart surface from having many ashes
Dirt causes patient not see symbol.
The utility model has the advantages that the present invention holds the first rocker arm and forward or reverse the second shaft, the second shaft by medical staff
The second spool is driven forward or reverse forward or reverse, to drive visual chart to rotate, so that patient saw out of instrument connection
Symbol size is different, and to test the eyesight of patient, medical staff can adjust instrument connection by moving up or down guide plate
Patient's vision is preferably tested in position, and medical staff can be moved to the left or right guide plate by wirerope, so that patient sees symbol
Number different direction.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is the enlarged diagram of present invention slider.
Wherein, the above drawings include the following reference numerals: 1, lower supporter, 2, u-bracket, 201, sliding slot, 202, groove, 3,
First bearing, the 4, first shaft, the 5, first spool, 6, second bearing, the 7, second shaft, the 8, second spool, the 9, first rocker arm,
10, visual chart, 11, sliding block, 1101, circular groove, 1102, guide groove, 1103, spring, 1104, fixture block, 1105, driving lever, 12, lead
Bar, 13, guide plate, 1301, pilot hole, 1302, instrument connection, 14, mounting plate, 15, rolling wheel, 16, turning handle, 17, Zuo Lasheng, 18, the right side
Drawstring, 19, first pulley, 20, second pulley, 21, perpendicular supporting plate, 22, third pulley, the 23, the 4th pulley, 24, wirerope, 25,
Second rocker arm, 26, connection folder, 27, left hole plate, 28, right hole plate, 29, brush stroke.
Specific embodiment
It is first pointed out that same parts are equipped with identical appended drawing reference phase in other words in the embodiment of different descriptions
Same component name, wherein the disclosure for including throughout the specification can be converted to attached drawing having the same by meaning
Label is in other words in the same parts of identical component name.Selected position description, for example upper and lower, side in the description
To etc. by meaning be converted to new position on referring also to attached drawing that is directly describing and showing and in position change.
Embodiment 1
A kind of ophthalmology visual testing chart includes as shown in Figs. 1-2 lower supporter 1, u-bracket 2, first bearing 3, the first shaft
4, the first spool 5, second bearing 6, the second shaft 7, the second spool 8, the first rocker arm 9, visual chart 10, sliding block 11, spring 1103,
Fixture block 1104, driving lever 1105, guide rod 12 and guide plate 13, the top of lower supporter 1 are connected with u-bracket 2, the left and right in u-bracket 2
Two sides are provided with sliding slot 201, and 201 left wall of left side sliding slot and 201 right wall of right side sliding slot are uniformly provided with multiple grooves 202, U-shaped branch
The left and right sides lower part of frame 2 is mounted on first bearing 3, and interference is connected with the first shaft 4 in first bearing 3, on the first shaft 4
It is connected with the first spool 5, is mounted on second bearing 6 at the top of the left and right sides of u-bracket 2, interference is connected in second bearing 6
Second shaft 7 is connected with the second spool 8 on second shaft 7, and the right end of the second shaft 7 is connected with the first rocker arm 9, the first spool 5
And second be wound with visual chart 10 between spool 8, slidingtype is connected with sliding block 11 on left and right sides sliding slot 201, and the left and right sides is sliding
The outer middle side part of block 11 is provided with circular groove 1101, and the forward exterior of left and right sides sliding block 11 is provided with guide groove 1102, guide groove
1102 communicate with circular groove 1101, and 1101 inner sliding type of circular groove is connected with fixture block 1104, and driving lever 1105 is connected on fixture block 1104, dial
Bar 1105 passes through circular groove 1101, spring 1103 is connected between fixture block 1104 and sliding block 11, spring 1103 is located at guide groove 1102
Interior, there are two guide rods 12, the upper slidingtype of two guide rods 12 to be connected with guide plate 13, guide plate 13 for connection between left and right sides sliding block 11
Up and down two be provided with pilot hole 1301, guide rod 12 passes through pilot hole 1301, and the middle part of guide plate 13 is provided with instrument connection 1302.
Embodiment 2
A kind of ophthalmology visual testing chart includes as shown in Figs. 1-2 lower supporter 1, u-bracket 2, first bearing 3, the first shaft
4, the first spool 5, second bearing 6, the second shaft 7, the second spool 8, the first rocker arm 9, visual chart 10, sliding block 11, spring 1103,
Fixture block 1104, driving lever 1105, guide rod 12 and guide plate 13, the top of lower supporter 1 are connected with u-bracket 2, the left and right in u-bracket 2
Two sides are provided with sliding slot 201, and 201 left wall of left side sliding slot and 201 right wall of right side sliding slot are uniformly provided with multiple grooves 202, U-shaped branch
The left and right sides lower part of frame 2 is mounted on first bearing 3, and interference is connected with the first shaft 4 in first bearing 3, on the first shaft 4
It is connected with the first spool 5, is mounted on second bearing 6 at the top of the left and right sides of u-bracket 2, interference is connected in second bearing 6
Second shaft 7 is connected with the second spool 8 on second shaft 7, and the right end of the second shaft 7 is connected with the first rocker arm 9, the first spool 5
And second be wound with visual chart 10 between spool 8, slidingtype is connected with sliding block 11 on left and right sides sliding slot 201, and the left and right sides is sliding
The outer middle side part of block 11 is provided with circular groove 1101, and the forward exterior of left and right sides sliding block 11 is provided with guide groove 1102, guide groove
1102 communicate with circular groove 1101, and 1101 inner sliding type of circular groove is connected with fixture block 1104, and driving lever 1105 is connected on fixture block 1104, dial
Bar 1105 passes through circular groove 1101, spring 1103 is connected between fixture block 1104 and sliding block 11, spring 1103 is located at guide groove 1102
Interior, there are two guide rods 12, the upper slidingtype of two guide rods 12 to be connected with guide plate 13, guide plate 13 for connection between left and right sides sliding block 11
Up and down two be provided with pilot hole 1301, guide rod 12 passes through pilot hole 1301, and the middle part of guide plate 13 is provided with instrument connection 1302.
It further include having mounting plate 14, rolling wheel 15, turning handle 16, Zola's rope 17, right drawstring 18, first pulley 19 and second pulley
20, the top of top guide bar 12 is connected with mounting plate 14, and rotary type is equipped with rolling wheel 15 on mounting plate 14, is connected with and turns on rolling wheel 15
Handle 16, rotary type is connected with first pulley 19 and second pulley 20 on the sliding block 11 of the left and right sides, is wound with Zola on reel
Rope 17 and right drawstring 18, successively around left side second pulley 20 and first pulley 19, simultaneously left driving lever 1105 connects Zola's rope 17,
Right drawstring 18 successively connect around right side second pulley 20 and first pulley 19 and with right side driving lever 1105.
Embodiment 3
A kind of ophthalmology visual testing chart includes as shown in Figs. 1-2 lower supporter 1, u-bracket 2, first bearing 3, the first shaft
4, the first spool 5, second bearing 6, the second shaft 7, the second spool 8, the first rocker arm 9, visual chart 10, sliding block 11, spring 1103,
Fixture block 1104, driving lever 1105, guide rod 12 and guide plate 13, the top of lower supporter 1 are connected with u-bracket 2, the left and right in u-bracket 2
Two sides are provided with sliding slot 201, and 201 left wall of left side sliding slot and 201 right wall of right side sliding slot are uniformly provided with multiple grooves 202, U-shaped branch
The left and right sides lower part of frame 2 is mounted on first bearing 3, and interference is connected with the first shaft 4 in first bearing 3, on the first shaft 4
It is connected with the first spool 5, is mounted on second bearing 6 at the top of the left and right sides of u-bracket 2, interference is connected in second bearing 6
Second shaft 7 is connected with the second spool 8 on second shaft 7, and the right end of the second shaft 7 is connected with the first rocker arm 9, the first spool 5
And second be wound with visual chart 10 between spool 8, slidingtype is connected with sliding block 11 on left and right sides sliding slot 201, and the left and right sides is sliding
The outer middle side part of block 11 is provided with circular groove 1101, and the forward exterior of left and right sides sliding block 11 is provided with guide groove 1102, guide groove
1102 communicate with circular groove 1101, and 1101 inner sliding type of circular groove is connected with fixture block 1104, and driving lever 1105 is connected on fixture block 1104, dial
Bar 1105 passes through circular groove 1101, spring 1103 is connected between fixture block 1104 and sliding block 11, spring 1103 is located at guide groove 1102
Interior, there are two guide rods 12, the upper slidingtype of two guide rods 12 to be connected with guide plate 13, guide plate 13 for connection between left and right sides sliding block 11
Up and down two be provided with pilot hole 1301, guide rod 12 passes through pilot hole 1301, and the middle part of guide plate 13 is provided with instrument connection 1302.
It further include having mounting plate 14, rolling wheel 15, turning handle 16, Zola's rope 17, right drawstring 18, first pulley 19 and second pulley
20, the top of top guide bar 12 is connected with mounting plate 14, and rotary type is equipped with rolling wheel 15 on mounting plate 14, is connected with and turns on rolling wheel 15
Handle 16, rotary type is connected with first pulley 19 and second pulley 20 on the sliding block 11 of the left and right sides, is wound with Zola on reel
Rope 17 and right drawstring 18, successively around left side second pulley 20 and first pulley 19, simultaneously left driving lever 1105 connects Zola's rope 17,
Right drawstring 18 successively connect around right side second pulley 20 and first pulley 19 and with right side driving lever 1105.
It further include having perpendicular supporting plate 21, third pulley 22, the 4th pulley 23, wirerope 24, connection folder 26 and the second rocker arm 25,
The bottom of left and right sides sliding block 11 is respectively connected with perpendicular supporting plate 21, and left side erects rotary type on supporting plate 21 and is connected with third pulley 22, right
Side erects rotary type on supporting plate 21 and is connected with the 4th pulley 23, and the bottom of guide plate 13 is connected with connection folder 26, third pulley 22 and the
Wirerope 24 is wound on four pulleys 23, wirerope 24 is connected with folder 26 is connect, and is connected with the second rocker arm 25 on the 4th pulley 23.
Embodiment 4
A kind of ophthalmology visual testing chart includes as shown in Figs. 1-2 lower supporter 1, u-bracket 2, first bearing 3, the first shaft
4, the first spool 5, second bearing 6, the second shaft 7, the second spool 8, the first rocker arm 9, visual chart 10, sliding block 11, spring 1103,
Fixture block 1104, driving lever 1105, guide rod 12 and guide plate 13, the top of lower supporter 1 are connected with u-bracket 2, the left and right in u-bracket 2
Two sides are provided with sliding slot 201, and 201 left wall of left side sliding slot and 201 right wall of right side sliding slot are uniformly provided with multiple grooves 202, U-shaped branch
The left and right sides lower part of frame 2 is mounted on first bearing 3, and interference is connected with the first shaft 4 in first bearing 3, on the first shaft 4
It is connected with the first spool 5, is mounted on second bearing 6 at the top of the left and right sides of u-bracket 2, interference is connected in second bearing 6
Second shaft 7 is connected with the second spool 8 on second shaft 7, and the right end of the second shaft 7 is connected with the first rocker arm 9, the first spool 5
And second be wound with visual chart 10 between spool 8, slidingtype is connected with sliding block 11 on left and right sides sliding slot 201, and the left and right sides is sliding
The outer middle side part of block 11 is provided with circular groove 1101, and the forward exterior of left and right sides sliding block 11 is provided with guide groove 1102, guide groove
1102 communicate with circular groove 1101, and 1101 inner sliding type of circular groove is connected with fixture block 1104, and driving lever 1105 is connected on fixture block 1104, dial
Bar 1105 passes through circular groove 1101, spring 1103 is connected between fixture block 1104 and sliding block 11, spring 1103 is located at guide groove 1102
Interior, there are two guide rods 12, the upper slidingtype of two guide rods 12 to be connected with guide plate 13, guide plate 13 for connection between left and right sides sliding block 11
Up and down two be provided with pilot hole 1301, guide rod 12 passes through pilot hole 1301, and the middle part of guide plate 13 is provided with instrument connection 1302.
It further include having mounting plate 14, rolling wheel 15, turning handle 16, Zola's rope 17, right drawstring 18, first pulley 19 and second pulley
20, the top of top guide bar 12 is connected with mounting plate 14, and rotary type is equipped with rolling wheel 15 on mounting plate 14, is connected with and turns on rolling wheel 15
Handle 16, rotary type is connected with first pulley 19 and second pulley 20 on the sliding block 11 of the left and right sides, is wound with Zola on reel
Rope 17 and right drawstring 18, successively around left side second pulley 20 and first pulley 19, simultaneously left driving lever 1105 connects Zola's rope 17,
Right drawstring 18 successively connect around right side second pulley 20 and first pulley 19 and with right side driving lever 1105.
It further include having perpendicular supporting plate 21, third pulley 22, the 4th pulley 23, wirerope 24, connection folder 26 and the second rocker arm 25,
The bottom of left and right sides sliding block 11 is respectively connected with perpendicular supporting plate 21, and left side erects rotary type on supporting plate 21 and is connected with third pulley 22, right
Side erects rotary type on supporting plate 21 and is connected with the 4th pulley 23, and the bottom of guide plate 13 is connected with connection folder 26, third pulley 22 and the
Wirerope 24 is wound on four pulleys 23, wirerope 24 is connected with folder 26 is connect, and is connected with the second rocker arm 25 on the 4th pulley 23.
It further include having left hole plate 27, right hole plate 28 and brush stroke 29, the interior left and right sides lower part of u-bracket 2 is separately connected
There are left hole plate 27 and right hole plate 28, rotary type is connected with brush stroke 29 between left hole plate 27 and right hole plate 28.
When needing using the present invention, medical staff first holds the first rocker arm 9 second shaft 7 forward or reverse, thus band
Dynamic visual chart 10 rotates, and the symbol size that so patient can be made to see out of instrument connection 1302 is different, to test patient
Eyesight, medical staff can hold the left and right sides driving lever 1105 and pull in opposite directions, the driving lever 1105 of the left and right sides moves towards
The fixture block 1104 of the left and right sides is driven to move towards, the spring 1103 of the left and right sides is compressed, so that the card of the left and right sides
Block 1104 is detached from the groove 202 of the left and right sides, and medical staff can be moved up or down by the sliding block 11 of the left and right sides at this time
Two guide rods 12, two guide rods 12, which move up or down, drives guide plate 13 to move up or down, so can be according to patient
Height adjust the position of instrument connection 1302, patient's vision is preferably tested, when medical staff is by the position tune of instrument connection 1302
It saving to after appropriate location, medical staff no longer holds the driving lever 1105 of the left and right sides, in left and right under the action of spring 1103, left and right
Two sides driving lever 1105 and fixture block 1104 reset, and fixture block 1104 is caught in card slot corresponding thereto, the position of resting guide 13.
Medical staff can rotate forward turning handle 16 and rolling wheel 15 is driven to rotate forward, and drive the left and right sides by Zola's rope 17 and right drawstring 18
Driving lever 1105 and pull in opposite directions, first pulley 19 and second pulley 20 play the guiding role, and the driving lever 1105 of the left and right sides is opposite
The mobile fixture block 1104 for driving the left and right sides moves towards, and the spring 1103 of the left and right sides is compressed, so that the left and right sides
Fixture block 1104 be detached from the groove 202 of the left and right sides, medical staff can be by the sliding block 11 of the left and right sides upward or downward at this time
Mobile two guide rods 12, two guide rods 12, which move up or down, drives guide plate 13 to move up or down, so can basis
The height of patient adjusts the position of instrument connection 1302, preferably tests patient's vision, when medical staff is by the position of instrument connection 1302
After setting adjusting to appropriate location, medical staff inverts turning handle 16 and rolling wheel 15 is driven to invert, and Zola's rope 17 and right drawstring 18 are released,
First pulley 19 and second pulley 20 play the guiding role, in left and right under the action of spring 1103, left and right sides driving lever 1105 and card
Block 1104 resets, and fixture block 1104 is caught in card slot corresponding thereto, and the position of resting guide 13 so can be more convenient
Adjust the position of guide plate 13.
Medical staff holds the second rocker arm 25 and rotates forward, and the second rocker arm 25, which rotates forward, drives third pulley 22 to rotate forward, and passes through steel
Cord 24 pulls connection folder 26 to move right, and third pulley 22 play the guiding role, connection folder 26 move right drive guide plate 13 to
It moves right, when medical staff holds the second rocker arm 25 and inverts, the reversion of the second rocker arm 25 drives third pulley 22 to invert, and passes through steel
Cord 24 pulls connection folder 26 to be moved to the left, and third pulley 22 play the guiding role, connection folder 26 be moved to the left drive guide plate 13 to
It moves left, can so make patient see the different direction of symbol, increase the effect of test.
Medical staff holds the first rocker arm 9 and forward or reverse the second shaft 7, and the second shaft 7 drives forward or reverse
Forward or reverse, so that visual chart 10 be driven to rotate, brush stroke 29 cleans visual chart 10 to two spools 8, prevents visual chart
There are many dusts on 10 surfaces, and patient is caused not see symbol.
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 (4)
1. a kind of ophthalmology visual testing chart includes lower supporter, u-bracket, first bearing, the first shaft and the first spool, bottom
U-bracket is connected at the top of bracket, the left and right sides in u-bracket is provided with sliding slot, left side sliding slot left wall and right side sliding slot
Right wall is uniformly provided with multiple grooves, and the left and right sides lower part of u-bracket is mounted on first bearing, and interference connects in first bearing
It is connected to the first shaft, the first spool is connected on the first shaft, it is characterized in that: further including having second bearing, the second shaft, second
Spool, the first rocker arm, visual chart, sliding block, spring, fixture block, driving lever, guide rod and guide plate, the left and right sides top of u-bracket is
Second bearing is installed, interference is connected with the second shaft in second bearing, and the second spool, the second shaft are connected on the second shaft
Right end be connected with the first rocker arm, visual chart, equal slidingtype on the sliding slot of the left and right sides are wound between the first spool and the second spool
It is connected with sliding block, the outer middle side part of left and right sides sliding block is provided with circular groove, and the forward exterior of left and right sides sliding block is provided with guiding
Slot, guide groove are communicated with circular groove, and circular groove inner sliding type is connected with fixture block, and driving lever is connected on fixture block, and driving lever passes through circular groove, fixture block
Spring is connected between sliding block, spring is located in guide groove, and there are two guide rod, two guide rods for connection between the sliding block of the left and right sides
Upper slidingtype be connected with guide plate, guide plate up and down two be provided with pilot hole, guide rod passes through pilot hole, is provided in the middle part of guide plate
Instrument connection.
2. a kind of ophthalmology visual testing chart described in accordance with the claim 1, it is characterized in that: further including having mounting plate, rolling wheel, turning
Handle, Zuo Lasheng, right drawstring, first pulley and second pulley are connected with mounting plate at the top of top guide bar, and rotary type is pacified on mounting plate
Equipped with rolling wheel, turning handle is connected on rolling wheel, rotary type is connected with first pulley and second pulley on the sliding block of the left and right sides, rolls up
Zola's rope and right drawstring are wound in line wheel, Zola's rope successively connects around left side second pulley with first pulley and left driving lever,
Right drawstring successively bypasses right side second pulley and first pulley and connect with right side driving lever.
3. a kind of ophthalmology visual testing chart according to claim 2, it is characterized in that: further include have perpendicular supporting plate, third pulley,
4th pulley, wirerope, connection folder and the second rocker arm, the bottom of left and right sides sliding block are respectively connected with perpendicular supporting plate, and supporting plate is erected in left side
Upper rotary type is connected with third pulley, and right side erects rotary type on supporting plate and is connected with the 4th pulley, and the bottom of guide plate is connected with connection
It presss from both sides, wirerope is wound on third pulley and the 4th pulley, wirerope is connected with folder is connect, and is connected with second on the 4th pulley and is shaken
Arm.
4. a kind of ophthalmology visual testing chart described in accordance with the claim 3, it is characterized in that: further include have left hole plate, right hole plate and
The interior left and right sides lower part of brush stroke, u-bracket is connected separately with left hole plate and right hole plate, rotates between left hole plate and right hole plate
Formula is connected with brush stroke.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811143978.8A CN109199318B (en) | 2018-09-29 | 2018-09-29 | Ophthalmology eyesight test table |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811143978.8A CN109199318B (en) | 2018-09-29 | 2018-09-29 | Ophthalmology eyesight test table |
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| CN109199318A true CN109199318A (en) | 2019-01-15 |
| CN109199318B CN109199318B (en) | 2020-12-22 |
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| CN201811143978.8A Expired - Fee Related CN109199318B (en) | 2018-09-29 | 2018-09-29 | Ophthalmology eyesight test table |
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| CN112401870A (en) * | 2020-11-23 | 2021-02-26 | 湖北昇源机械设备有限公司 | Supplementary nuclear magnetic resonance waist fixing device |
| CN114983335A (en) * | 2022-07-18 | 2022-09-02 | 蒋华 | Self-service testing device and method for eyesight of teenagers |
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| Publication number | Publication date |
|---|---|
| CN109199318B (en) | 2020-12-22 |
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