CN215534260U - Wheel disc type rotating visual chart - Google Patents
Wheel disc type rotating visual chart Download PDFInfo
- Publication number
- CN215534260U CN215534260U CN202120044964.1U CN202120044964U CN215534260U CN 215534260 U CN215534260 U CN 215534260U CN 202120044964 U CN202120044964 U CN 202120044964U CN 215534260 U CN215534260 U CN 215534260U
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- disc
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- test
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- 230000000007 visual effect Effects 0.000 title claims abstract description 12
- 238000005096 rolling process Methods 0.000 claims description 5
- 230000004438 eyesight Effects 0.000 abstract description 3
- 238000009434 installation Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000004304 visual acuity Effects 0.000 description 1
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Abstract
The utility model discloses a wheel disc type rotating visual chart in the field of vision test, which comprises a fixed disc, wherein a mounting cavity is arranged in the fixed disc, a rotating shaft is fixedly arranged in the center of the mounting cavity, the rotating shaft is rotatably provided with a rotating disc, the center of the rotating disc is provided with a rotating hole, the rotating disc is rotatably connected with the rotating shaft through the rotating hole, the front end surface of the fixed disc is provided with a display port, the display port is communicated with the mounting cavity arranged on the fixed disc, the surface of the rotating disc is provided with a test symbol, the upper end surface of the fixed disc is fixedly provided with a convex block, the lower end surface of the convex block is provided with a sliding groove, a clamping block is slidably arranged in the sliding groove, the upper end surface of the clamping block is fixedly provided with a spring, the upper end surface of the spring is fixedly connected with the upper end surface of the sliding groove, the edge of the rotating disc is provided with a clamping groove, the shape of the clamping groove is the same as that of the clamping groove, the lower end surface of the fixed disc is fixedly provided with a bracket, and the device can independently and randomly appear each time of the test symbol, the accuracy of the test is greatly increased.
Description
Technical Field
The utility model relates to the field of vision test, in particular to a wheel disc type rotating visual chart.
Background
The traditional vision test is as follows: the tester randomly indicates a Chinese character 'shan' on the visual chart, and the tester is required to speak the direction of the Chinese character 'shan' in the visual chart. Because all the Chinese character 'shan' shaped symbols are arranged on a piece of paper, the detected person can accurately guess the direction of the graph in the detection process by forcibly memorizing in advance, so that the detection result is not true.
Accordingly, the present invention is directed to a wheel-type rotational eye chart that solves the problems set forth in the background above.
Disclosure of Invention
The utility model aims to provide a wheel disc type rotating visual chart to solve the problems in the prior art.
In order to achieve the purpose, the utility model provides the following technical scheme:
the wheel disc type rotating visual chart comprises a fixed disc, wherein an installation cavity is formed in the fixed disc, a rotating shaft is fixedly installed in the center of the installation cavity, the rotating shaft is rotatably installed with a rotating disc, a rotating hole is formed in the center of the rotating disc, the rotating disc is rotatably connected with the rotating shaft through the rotating hole, a display opening is formed in the front end face of the fixed disc and is communicated with the installation cavity formed in the fixed disc, a test symbol is formed in the surface of the rotating disc, a convex block is fixedly installed on the upper end face of the fixed disc, a sliding groove is formed in the lower end face of the convex block, a clamping block is slidably installed in the sliding groove, a spring is fixedly installed on the upper end face of the clamping block, the upper end face of the spring is fixedly connected with the upper end face of the sliding groove, a clamping groove is formed in the edge of the rotating disc, the clamping groove is arc-shaped, and the lower end of the clamping block is the same as the clamping groove in shape, the lower end face of the fixed disc is fixedly provided with a support.
As a further scheme of the utility model: the shape and the size of the test symbol are completely the same as those of the test symbol on the traditional visual chart, and the test accuracy is guaranteed.
As a still further scheme of the utility model: the angle interval between each test symbol is the same, and the opening angle of the display opening is the same as the occupied area angle of a single test symbol on the rotary disc, so that only one test symbol appears in the display opening at each time.
As a still further scheme of the utility model: the clamping grooves are arranged on the edge of the rotating disc at equal intervals, the number of the clamping grooves is the same as that of the test symbols, the clamping blocks can have a certain positioning effect on the rotating disc, and the clamping grooves are arranged in the corresponding areas of each test symbol.
As a still further scheme of the utility model: grade marks are arranged on the right side of the display opening on the front end face of the fixed disc, and the test symbols can be conveniently subjected to grade evaluation.
As a still further scheme of the utility model: the left lower side and the right lower side of fixed disk are all seted up flutedly, and the rolling disc can stretch out in the recess, conveniently rotates the rolling disc.
As a still further scheme of the utility model: the LED lamp is installed at the display opening and can supplement light rays when the light rays are poor.
Advantageous effects
Compared with the prior art, the utility model has the beneficial effects that:
the test symbols are arranged on the surface of the rotating disc, the rotating disc is installed in the fixed disc, the test symbols are individually displayed through the display port formed in the surface of the fixed disc, so that testers cannot memorize the test symbols in advance, the test symbols are independent and random at every time, the test accuracy is greatly improved, and the problems that all Chinese character type symbols of the traditional visual chart are on a piece of paper, the testers can forcibly memorize the test symbols in advance, the direction of the graph is accurately guessed during detection, and the detection result is unreal are solved.
Drawings
FIG. 1 is a schematic diagram of the general structure of the present invention;
FIG. 2 is a schematic sectional view of the fixing plate of the present invention;
FIG. 3 is a schematic view showing the internal structure of the fixing plate according to the present invention;
fig. 4 is a schematic structural view of a rotating disk according to the present invention.
In the figure: 1-fixed disc, 2-installation cavity, 3-rotating shaft, 4-rotating disc, 5-rotating hole, 6-display port, 7-test symbol, 8-bump, 9-sliding groove, 10-clamping block, 11-spring, 12-clamping groove, 13-bracket, 14-grade mark, 15-groove and 16-LED lamp.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 4, in the embodiment of the present invention, the wheel disc type rotating visual acuity chart includes a fixed disc 1, a mounting cavity 2 is formed in the fixed disc 1, a rotating shaft 3 is fixedly installed at the center in the mounting cavity 2, a rotating disc 4 is rotatably installed on the rotating shaft 3, a rotating hole 5 is formed in the center of the rotating disc 4, the rotating disc 4 is rotatably connected to the rotating shaft 3 through the rotating hole 5, a display opening 6 is formed in a front end surface of the fixed disc 1, the display opening 6 is communicated with the mounting cavity 2 formed in the fixed disc 1, a test symbol 7 is formed on the surface of the rotating disc 4, a projection 8 is fixedly installed on an upper end surface of the fixed disc 1, a sliding groove 9 is formed in a lower end surface of the projection 8, a fixture block 10 is slidably installed in the sliding groove 9, a spring 11 is fixedly installed on an upper end surface of the fixture block 10, an upper end surface of the spring 11 is fixedly connected to an upper end surface of the sliding groove 9, a clamping groove 12 is formed in an edge of the rotating disc 4, and the clamping groove 12 is arc-shaped, the shape of the lower end of the fixture block 10 is the same as that of the clamping groove 12, and a bracket 13 is fixedly arranged on the lower end face of the fixed disc 1.
In this embodiment, the shape and size of the test symbol 7 are completely the same as those of the test symbol 7 on the conventional eye chart, so that the test accuracy is ensured.
In this embodiment, the angular intervals between each test symbol 7 are the same, and the opening angle of the display opening 6 is the same as the angle of the area occupied by a single test symbol 7 on the rotary disk 4, so that only one test symbol 7 appears in the display opening 6 at a time.
In this embodiment, the plurality of slots 12 are installed at equal intervals on the edge of the rotating disc 4, the number of the slots 12 is the same as that of the test symbols 7, and the fixture block 10 can have a certain positioning effect on the rotating disc 4, so that it is ensured that the slots 12 are all provided in the region corresponding to each test symbol 7.
In this embodiment, the right side of the front end surface display opening 6 of the fixed disk 1 is provided with the grade mark 14, which is convenient for evaluating the grade of the test symbol 7.
In this embodiment, recess 15 has all been seted up to the left downside and the right downside of fixed disk 1, and rolling disc 4 can stretch out in recess 15, conveniently rotates rolling disc 4.
In this embodiment, the rear end face of the installation cavity 2 is fixedly provided with the LED lamp 16, and the LED lamp 16 is installed at the display opening 6, so that light can be supplemented when the light is poor.
The working principle of the utility model is as follows:
firstly, the device is placed in a test place, then a tester needs to stand in an appointed place, if the light of the test place is insufficient, the LED lamp 16 can be started, then the test can be started, firstly, the largest test symbol 7 is rotated to the display opening 6 to test the tester, then, the rotating disc 4 can be rotated, the small test symbol 7 is gradually rotated to the display opening 6, in the rotating process of the rotating disc 4, the clamping block 10 can be jacked up by the edge part of the clamping groove 12, then when the next clamping groove 12 is rotated to the lower part of the clamping block 10, the clamping block 10 can be clamped into the current clamping groove 12, a certain positioning effect is achieved on the rotating disc 4, and the test symbol 7 at the position where the rotating disc 4 stops is ensured to be just positioned in the display opening 6.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.
Claims (7)
1. Wheel disc formula rotation visual chart, including fixed disk (1), its characterized in that: the mounting cavity (2) is formed in the fixed disc (1), a rotating shaft (3) is fixedly mounted at the inner center of the mounting cavity (2), the rotating shaft (3) is rotatably mounted with a rotating disc (4), a rotating hole (5) is formed in the center of the rotating disc (4), the rotating disc (4) is rotatably connected with the rotating shaft (3) through the rotating hole (5), a display opening (6) is formed in the front end face of the fixed disc (1), the display opening (6) is communicated with the mounting cavity (2) formed in the fixed disc (1), a test symbol (7) is formed in the surface of the rotating disc (4), a bump (8) is fixedly mounted on the upper end face of the fixed disc (1), a sliding groove (9) is formed in the lower end face of the bump (8), a clamping block (10) is slidably mounted in the sliding groove (9), and a spring (11) is fixedly mounted on the upper end face of the clamping block (10), the upper end face of spring (11) and the upper end face fixed connection of spout (9), draw-in groove (12) have been seted up at the edge of rolling disc (4), the shape of draw-in groove (12) is arc, fixture block (10) lower extreme shape is the same with draw-in groove (12) shape, the lower terminal surface fixed mounting of fixed disk (1) has support (13).
2. The roulette-style rotational eye chart according to claim 1, wherein: the shape and size of the test symbol (7) are identical to the test symbol (7) on a traditional visual chart.
3. The roulette-style rotational eye chart according to claim 1, wherein: the angular intervals between each test symbol (7) are the same, and the opening angle of the display opening (6) is the same as the occupied area angle of the single test symbol (7) on the rotating disc (4).
4. The roulette-style rotational eye chart according to claim 1, wherein: the clamping grooves (12) are arranged on the edge of the rotating disc (4) at equal intervals, and the number of the clamping grooves (12) is the same as that of the test symbols (7).
5. The roulette-style rotational eye chart according to claim 1, wherein: the right side of the front end face display opening (6) of the fixed disc (1) is provided with a grade mark (14).
6. The roulette-style rotational eye chart according to claim 1, wherein: the left lower side and the right lower side of the fixed disc (1) are both provided with grooves (15).
7. The roulette-style rotational eye chart according to claim 1, wherein: the LED lamp is characterized in that an LED lamp (16) is fixedly mounted on the rear end face of the mounting cavity (2), and the LED lamp (16) is mounted at the display opening (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120044964.1U CN215534260U (en) | 2021-01-08 | 2021-01-08 | Wheel disc type rotating visual chart |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120044964.1U CN215534260U (en) | 2021-01-08 | 2021-01-08 | Wheel disc type rotating visual chart |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215534260U true CN215534260U (en) | 2022-01-18 |
Family
ID=79816263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120044964.1U Expired - Fee Related CN215534260U (en) | 2021-01-08 | 2021-01-08 | Wheel disc type rotating visual chart |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215534260U (en) |
-
2021
- 2021-01-08 CN CN202120044964.1U patent/CN215534260U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220118 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |