CN2095636U - Rotary sight test instrument - Google Patents
Rotary sight test instrument Download PDFInfo
- Publication number
- CN2095636U CN2095636U CN 91211704 CN91211704U CN2095636U CN 2095636 U CN2095636 U CN 2095636U CN 91211704 CN91211704 CN 91211704 CN 91211704 U CN91211704 U CN 91211704U CN 2095636 U CN2095636 U CN 2095636U
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- CN
- China
- Prior art keywords
- axle
- nut
- outside silk
- carriages
- rotating disk
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model discloses a rotating eyesight testing instrument for detecting eyesight, comprising a base, an axle arranged in the base, a box body frame, a lamp tube and a positioning device. The four sides of the box body frame are provided with four blocks of logarithmic alphabet panels with opening towards different directions which can rotate around the axle. The positioning device is utilized to make the box body frame automatically positioned per turn of 90 DEG. The lamp tube is fixedly connected with the axle via a bracket, which assures illuminance at the time of detecting eyesight. By rotating the box body frame, the alphabet panels of different alphabet opening directions can be obtained, which makes eyesight detection accurate.
Description
This utility model relates to a kind of rotary type eyesight detecting instrument that is used to detect eye eyesight.
What at present China was used to detect eye eyesight is to the numerical expression visual acuity chart, and its standard is GB11533-89.The fixed eyesight detecting instrument of rectangle is made according to the size of standard visual acuity chart by the producer of domestic production eyesight detecting instrument, the relative altitude that can adjust visual acuity chart and the angle that have.These eyesight detecting instruments cause false appearance because used lexicographical order is easily learnt off in advance by the examinate, and country's conscription, recruitment etc. are made troubles and unnecessary loss.
The purpose of this utility model provides a kind of rotary type eyesight detecting instrument, it can provide easily four kinds of alphabetical opening directions different to numerical expression alphabet plate, and guarantee the illuminance of regulation.
Technical solution of the present utility model is: by base 8, be contained in the axle 7 in the base 8, be installed in the nut 18 of axle 7 bottoms, support plate 25, inside and outside silk nut 28, positioning seat 27, alignment pin 24, spring 23, lid 9, be installed in the inside and outside silk nut 16 of axle 7 upper ends, nut 17 and the base plate 29 of fixedlying connected with rotating disk 22, be fixed on the box frame 3 on base plate 29 and the upper plate 12, four block letter dash boards 1, two carriages 2, two fluorescent tubes 6, the lead 11 that is connected with fluorescent tube 6 is formed a kind of rotary type eyesight detecting instrument, install respectively in four sides of box frame 3 four block letter opening directions different to numerical expression alphabet plate 1, upper plate 12 and rotating disk 22 flexibly connect with axle 7, and box frame 3 can be rotated around axle 7; Two fluorescent tubes 6 are installed on two carriages 2, fixedly connected with axle 7 respectively in the two ends of two carriages 2, guarantee box frame 3 like this when axle 7 rotations, and two fluorescent tubes 6 do not rotate, and make illuminance all the time in prescribed limit.
Can fixedly connected with axle 7 by inside and outside silk nut 16 in two carriages, 2 upper ends in this utility model technical solution, the lower end can pass through nut 18, support plate 25, inside and outside nut 28 and fixedlys connected with spools 7.
Can uniform four holes 14 of matching on the rotating disk 22 in this utility model technical solution with alignment pin 24, the upper end of spring 23 is fixed on the top of alignment pin 24, and the lower end seat is on lid 9.
Since adopted in the above-mentioned technical solution turnable four sides be equipped with alphabetical opening direction different to numerical expression alphabet plate and changeless illuminance, make those who are investigated be difficult for back of the body visual acuity chart down, thereby improve the verity that gives a test of one's eyesight; Adopt rotating disk to cooperate, make it easy to use with alignment pin.
Be that the utility model is described in further detail for embodiment below with the accompanying drawing.
Fig. 1 is the front view of rotary type eyesight detecting instrument.
Fig. 2 is the B-B cutaway view among Fig. 1.
Fig. 3 is the partial view of positioning seat 27 among Fig. 1.
Fig. 4 is the vertical view of Fig. 3 turntable 22.
Fig. 5 is the vertical view of rotary type eyesight detecting instrument.
Fig. 6 is the A-A cutaway view among Fig. 1.
1-letter dash board wherein, 2-carriage, 3-box frame, 4-circle medicated cap, 5-tube face, 6-fluorescent tube, the 7-axle, 8-base, 9-lid, the 10-control box, 11-lead, 12-upper plate, the 13-screw, 14-locating hole, 15-ballast, the inside and outside silk of 16-nut, 17-nut, 18-nut, the 19-spring washer, 20-plain washer, 21-nut, the 22-rotating disk, 23-spring, 24-alignment pin, the 25-support plate, 26-lock-screw, 27-positioning seat, the inside and outside silk of 28-nut, 29-base plate, 30-screw.
By base 8, be contained in the axle 7 in the base 8, be installed in the nut 18 of axle 7 bottoms, support plate 25, inside and outside silk nut 28, positioning seat 27, alignment pin 24, spring 23, lid 9, be installed in the inside and outside silk nut 16 of axle 7 upper ends, nut 17 and the base plate 29 of fixedlying connected with rotating disk 22, be fixed on the box frame 3 on base plate 29 and the upper plate 12, four block letter dash boards 1, two carriages 2, two fluorescent tubes 6, the lead 11 that is connected with fluorescent tube 6 is formed a kind of rotary type eyesight detecting instrument, four sides of casing 3 install respectively four block letter opening directions different to numerical expression alphabet plate 1, four block letter dash boards 1 all meet the GB11533-89 standard, make with the lucite printing, upper plate 12 of fixedlying connected with casing 3 and rotating disk 22 flexibly connect with axle 7.In the groove that the step that upper plate 12 is installed in inside and outside silk nut 16 and the nut 17 that is contained on the inside and outside silk nut 16 surround, rotating disk 22 is installed in the groove that inside and outside silk nut 28 and the positioning seat 27 that is contained on the inside and outside silk nut 28 surrounded.When rotating box frame 3 for assurance, every block letter dash board all can be towards same direction, alignment pin 24 is installed on positioning seat 27, uniform four holes 14 of matching on rotating disk 22 with alignment pin 24, one end of spring 23 is fixed on the upper end of alignment pin 24, other end seat is on lid 9, and lid 9 is fixedly connected on the positioning seat 27.Before the use, earlier alignment pin 24 is matched with rotating disk 22, adjust the position of alphabetical dash board 1, with lock-screw 26 positioning seat 27 is located then; During use, detect person under inspection's vision on request, when suspecting that examinate's vision has fictitious time, the available alignment pin 24 that pulls down, and rotate box frame 3 with hands, when forwarding 90 ° to, alignment pin 24 is matching with a hole 14 on the rotating disk 22 under the effect of spring 23 automatically, so just can give a test of one's eyesight with another block letter dash board 1, if twice detection is identical, prove that then the grade that gives a test of one's eyesight for the first time is correct, if inequality, then proof has vacation, can detect for the third time in case of necessity, four times.Illuminance when guaranteeing alphabetical dash board 1 in the face of the observer is not less than 500 luxs, two of two fluorescent tube 6(30 watt fluorescent tubes) be installed on two carriages 2, fixedly connected with axle 7 respectively in the two ends of two carriages 2.Between two carriages 2 at a distance of 100 millimeters, with front letter dash board 1 from 50 millimeters, the upper end of two carriages 2 is welded on the inside and outside silk nut 16, the lower end is welded on the support plate 25, support plate 25 is by inside and outside silk nut 28, spring washer 19, plain washer 20, nut 18 is pressed on the axle 7, at the two ends of two carriages 2 fixed light base 6 and ballast 15, two fluorescent tubes 6 are installed in the tube face 6 and with lead 11 are connected, control box 10 is installed in axle 7 lower ends, 1 of trigger knob is installed in the control box 10,1 of on and off switch also is connected with lead 11, when using, lead 11 and power connection are opened switch and knob, two fluorescent tubes 6 are promptly luminous, when rotating box frame 3, fluorescent tube 6 does not rotate, and guarantees that illuminance is constant in prescribed limit.254 millimeters of the length of box frame 3, wide 254 millimeters, high 985 millimeters, 1800 millimeters of rotary type eyesight detecting instrument height overalls.
Claims (4)
1, a kind of rotary type eyesight detecting instrument that is used to detect eye eyesight, by base 8, be contained in the axle 7 in the base 8, the nut 18 that is installed in axle 7 bottoms, support plate 25, inside and outside silk nut 28, positioning seat 27, alignment pin 24, spring 23, lid 9, the inside and outside silk nut 16 that is installed in axle 7 upper ends, nut 17 with the fixedly connected base plate 29 of rotating disk 22, be fixed on box frame 3 on base plate 29 and the upper plate 12, four block letter dash boards 1, two carriages 2, two fluorescent tubes 6, the lead 11 that is connected with fluorescent tube 6 forms, it is characterized in that:
Four sides of a, described box frame 3 install respectively four block letter opening directions different to numerical expression alphabet plate 1, upper plate 12 and rotating disk 22 flexibly connects with axle 7;
B, described two fluorescent tubes 6 are installed on two carriages 2, fixedly connected with axle 7 respectively in the two ends of two carriages 2.
2, rotary type eyesight detecting instrument according to claim 1, it is characterized in that said upper plate 12 flexibly connects with axle 7 by the step of inside and outside silk nut 16 and the nut 17 that is contained on the inside and outside silk nut 16, rotating disk 22 flexibly connects with axle 7 by the step of inside and outside silk nut 28 and the positioning seat 27 that is contained on the inside and outside silk nut 28.
3, rotary type eyesight detecting instrument according to claim 1 is characterized in that said two carriages 2 upper ends fixedly connected with axle 7 by inside and outside silk nut 16, fixedlys connected with spools 7 by nut 18, support plate 25, inside and outside silk nut 28 in the lower end.
4, rotary type eyesight detecting instrument according to claim 1 and 2 is characterized in that uniform four holes 14 of matching with alignment pin 24 on the said rotating disk 22, and the upper end of spring 23 is fixed on the top of alignment pin 24, and the lower end seat is on lid 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91211704 CN2095636U (en) | 1991-05-20 | 1991-05-20 | Rotary sight test instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91211704 CN2095636U (en) | 1991-05-20 | 1991-05-20 | Rotary sight test instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2095636U true CN2095636U (en) | 1992-02-12 |
Family
ID=4920348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91211704 Withdrawn CN2095636U (en) | 1991-05-20 | 1991-05-20 | Rotary sight test instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2095636U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105996974A (en) * | 2016-06-25 | 2016-10-12 | 利辛县眼病防治所 | Portable and changeable visual acuity chart box |
| CN111568364A (en) * | 2020-04-02 | 2020-08-25 | 李发标 | Vision detection device |
-
1991
- 1991-05-20 CN CN 91211704 patent/CN2095636U/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105996974A (en) * | 2016-06-25 | 2016-10-12 | 利辛县眼病防治所 | Portable and changeable visual acuity chart box |
| CN111568364A (en) * | 2020-04-02 | 2020-08-25 | 李发标 | Vision detection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |